version 1.76, 2002/03/28 04:27:42
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version 1.410.2.2, 2009/10/09 12:36:10
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# |
# |
# LON-CAPA is free software; you can redistribute it and/or modify |
# LON-CAPA is free software; you can redistribute it and/or modify |
# it under the terms of the GNU General Public License as published by |
# it under the terms of the GNU General Public License as published by |
# the Free Software Foundation; either version 2 of the License, or |
# the Free Software Foundation; either version 2 of the License, or |
# (at your option) any later version. |
# (at your option) any later version. |
# |
# |
# LON-CAPA is distributed in the hope that it will be useful, |
# LON-CAPA is distributed in the hope that it will be useful, |
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# |
# |
# /home/httpd/html/adm/gpl.txt |
# /home/httpd/html/adm/gpl.txt |
# |
# |
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# http://www.lon-capa.org/ |
# http://www.lon-capa.org/ |
# |
# |
# 5/26/99,6/4,6/10,6/11,6/14,6/15,6/26,6/28,6/30, |
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# 7/8,7/9,7/10,7/12,7/17,7/19,9/21, |
use strict; |
# 10/7,10/8,10/9,10/11,10/13,10/15,11/4,11/16, |
use lib '/home/httpd/lib/perl/'; |
# 12/7,12/15,01/06,01/11,01/12,01/14,2/8, |
use LONCAPA; |
# 03/07,05/31 Gerd Kortemeyer |
use LONCAPA::Configuration; |
# 06/26 Scott Harrison |
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# 06/29,06/30,07/14,07/15,07/17,07/20,07/25,09/18 Gerd Kortemeyer |
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# 12/05 Scott Harrison |
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# 12/05,12/13,12/29 Gerd Kortemeyer |
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# YEAR=2001 |
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# Jan 01 Scott Harrison |
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# 02/12 Gerd Kortemeyer |
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# 03/15 Scott Harrison |
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# 03/24 Gerd Kortemeyer |
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# 04/02 Scott Harrison |
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# 05/11,05/28,08/30 Gerd Kortemeyer |
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# 9/30,10/22,11/13,11/15,11/16 Scott Harrison |
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# 11/26,11/27 Gerd Kortemeyer |
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# 12/20 Scott Harrison |
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# 12/22 Gerd Kortemeyer |
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# YEAR=2002 |
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# 01/20/02,02/05 Gerd Kortemeyer |
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# 02/05 Guy Albertelli |
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# 02/07 Scott Harrison |
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# 02/12 Gerd Kortemeyer |
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# 02/19 Matthew Hall |
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# 02/25 Gerd Kortemeyer |
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### |
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# based on "Perl Cookbook" ISBN 1-56592-243-3 |
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# preforker - server who forks first |
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# runs as a daemon |
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# HUPs |
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# uses IDEA encryption |
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use IO::Socket; |
use IO::Socket; |
use IO::File; |
use IO::File; |
use Apache::File; |
#use Apache::File; |
use Symbol; |
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use POSIX; |
use POSIX; |
use Crypt::IDEA; |
use Crypt::IDEA; |
use LWP::UserAgent(); |
use LWP::UserAgent(); |
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use Digest::MD5 qw(md5_hex); |
use GDBM_File; |
use GDBM_File; |
use Authen::Krb4; |
use Authen::Krb4; |
use lib '/home/httpd/lib/perl/'; |
use Authen::Krb5; |
use localauth; |
use localauth; |
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use localenroll; |
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use localstudentphoto; |
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use File::Copy; |
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use File::Find; |
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use LONCAPA::lonlocal; |
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use LONCAPA::lonssl; |
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use Fcntl qw(:flock); |
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use Apache::lonnet; |
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my $DEBUG = 0; # Non zero to enable debug log entries. |
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my $status=''; |
my $status=''; |
my $lastlog=''; |
my $lastlog=''; |
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my $VERSION='$Revision$'; #' stupid emacs |
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my $remoteVERSION; |
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my $currenthostid="default"; |
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my $currentdomainid; |
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my $client; |
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my $clientip; # IP address of client. |
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my $clientname; # LonCAPA name of client. |
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my $server; |
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my $keymode; |
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my $cipher; # Cipher key negotiated with client |
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my $tmpsnum = 0; # Id of tmpputs. |
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# |
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# Connection type is: |
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# client - All client actions are allowed |
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# manager - only management functions allowed. |
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# both - Both management and client actions are allowed |
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# |
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my $ConnectionType; |
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my %managers; # Ip -> manager names |
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my %perlvar; # Will have the apache conf defined perl vars. |
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# |
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# The hash below is used for command dispatching, and is therefore keyed on the request keyword. |
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# Each element of the hash contains a reference to an array that contains: |
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# A reference to a sub that executes the request corresponding to the keyword. |
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# A flag that is true if the request must be encoded to be acceptable. |
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# A mask with bits as follows: |
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# CLIENT_OK - Set when the function is allowed by ordinary clients |
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# MANAGER_OK - Set when the function is allowed to manager clients. |
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# |
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my $CLIENT_OK = 1; |
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my $MANAGER_OK = 2; |
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my %Dispatcher; |
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# |
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# The array below are password error strings." |
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# |
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my $lastpwderror = 13; # Largest error number from lcpasswd. |
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my @passwderrors = ("ok", |
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"pwchange_failure - lcpasswd must be run as user 'www'", |
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"pwchange_failure - lcpasswd got incorrect number of arguments", |
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"pwchange_failure - lcpasswd did not get the right nubmer of input text lines", |
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"pwchange_failure - lcpasswd too many simultaneous pwd changes in progress", |
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"pwchange_failure - lcpasswd User does not exist.", |
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"pwchange_failure - lcpasswd Incorrect current passwd", |
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"pwchange_failure - lcpasswd Unable to su to root.", |
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"pwchange_failure - lcpasswd Cannot set new passwd.", |
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"pwchange_failure - lcpasswd Username has invalid characters", |
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"pwchange_failure - lcpasswd Invalid characters in password", |
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"pwchange_failure - lcpasswd User already exists", |
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"pwchange_failure - lcpasswd Something went wrong with user addition.", |
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"pwchange_failure - lcpasswd Password mismatch", |
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"pwchange_failure - lcpasswd Error filename is invalid"); |
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# The array below are lcuseradd error strings.: |
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my $lastadderror = 13; |
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my @adderrors = ("ok", |
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"User ID mismatch, lcuseradd must run as user www", |
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"lcuseradd Incorrect number of command line parameters must be 3", |
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"lcuseradd Incorrect number of stdinput lines, must be 3", |
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"lcuseradd Too many other simultaneous pwd changes in progress", |
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"lcuseradd User does not exist", |
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"lcuseradd Unable to make www member of users's group", |
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"lcuseradd Unable to su to root", |
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"lcuseradd Unable to set password", |
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"lcuseradd Username has invalid characters", |
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"lcuseradd Password has an invalid character", |
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"lcuseradd User already exists", |
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"lcuseradd Could not add user.", |
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"lcuseradd Password mismatch"); |
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# |
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# Statistics that are maintained and dislayed in the status line. |
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# |
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my $Transactions = 0; # Number of attempted transactions. |
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my $Failures = 0; # Number of transcations failed. |
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# ResetStatistics: |
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# Resets the statistics counters: |
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# |
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sub ResetStatistics { |
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$Transactions = 0; |
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$Failures = 0; |
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} |
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#------------------------------------------------------------------------ |
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# |
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# LocalConnection |
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# Completes the formation of a locally authenticated connection. |
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# This function will ensure that the 'remote' client is really the |
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# local host. If not, the connection is closed, and the function fails. |
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# If so, initcmd is parsed for the name of a file containing the |
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# IDEA session key. The fie is opened, read, deleted and the session |
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# key returned to the caller. |
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# |
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# Parameters: |
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# $Socket - Socket open on client. |
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# $initcmd - The full text of the init command. |
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# |
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# Returns: |
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# IDEA session key on success. |
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# undef on failure. |
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# |
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sub LocalConnection { |
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my ($Socket, $initcmd) = @_; |
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Debug("Attempting local connection: $initcmd client: $clientip"); |
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if($clientip ne "127.0.0.1") { |
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&logthis('<font color="red"> LocalConnection rejecting non local: ' |
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."$clientip ne 127.0.0.1 </font>"); |
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close $Socket; |
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return undef; |
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} else { |
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chomp($initcmd); # Get rid of \n in filename. |
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my ($init, $type, $name) = split(/:/, $initcmd); |
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Debug(" Init command: $init $type $name "); |
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# Require that $init = init, and $type = local: Otherwise |
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# the caller is insane: |
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if(($init ne "init") && ($type ne "local")) { |
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&logthis('<font color = "red"> LocalConnection: caller is insane! ' |
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."init = $init, and type = $type </font>"); |
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close($Socket);; |
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return undef; |
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} |
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# Now get the key filename: |
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my $IDEAKey = lonlocal::ReadKeyFile($name); |
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return $IDEAKey; |
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} |
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} |
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#------------------------------------------------------------------------------ |
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# |
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# SSLConnection |
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# Completes the formation of an ssh authenticated connection. The |
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# socket is promoted to an ssl socket. If this promotion and the associated |
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# certificate exchange are successful, the IDEA key is generated and sent |
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# to the remote peer via the SSL tunnel. The IDEA key is also returned to |
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# the caller after the SSL tunnel is torn down. |
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# |
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# Parameters: |
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# Name Type Purpose |
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# $Socket IO::Socket::INET Plaintext socket. |
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# |
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# Returns: |
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# IDEA key on success. |
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# undef on failure. |
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# |
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sub SSLConnection { |
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my $Socket = shift; |
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Debug("SSLConnection: "); |
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my $KeyFile = lonssl::KeyFile(); |
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if(!$KeyFile) { |
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my $err = lonssl::LastError(); |
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&logthis("<font color=\"red\"> CRITICAL" |
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."Can't get key file $err </font>"); |
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return undef; |
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} |
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my ($CACertificate, |
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$Certificate) = lonssl::CertificateFile(); |
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# If any of the key, certificate or certificate authority |
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# certificate filenames are not defined, this can't work. |
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if((!$Certificate) || (!$CACertificate)) { |
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my $err = lonssl::LastError(); |
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&logthis("<font color=\"red\"> CRITICAL" |
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."Can't get certificates: $err </font>"); |
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return undef; |
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} |
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Debug("Key: $KeyFile CA: $CACertificate Cert: $Certificate"); |
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# Indicate to our peer that we can procede with |
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# a transition to ssl authentication: |
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print $Socket "ok:ssl\n"; |
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Debug("Approving promotion -> ssl"); |
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# And do so: |
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my $SSLSocket = lonssl::PromoteServerSocket($Socket, |
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$CACertificate, |
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$Certificate, |
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$KeyFile); |
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if(! ($SSLSocket) ) { # SSL socket promotion failed. |
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my $err = lonssl::LastError(); |
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&logthis("<font color=\"red\"> CRITICAL " |
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."SSL Socket promotion failed: $err </font>"); |
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return undef; |
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} |
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Debug("SSL Promotion successful"); |
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# |
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# The only thing we'll use the socket for is to send the IDEA key |
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# to the peer: |
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my $Key = lonlocal::CreateCipherKey(); |
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print $SSLSocket "$Key\n"; |
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lonssl::Close($SSLSocket); |
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Debug("Key exchange complete: $Key"); |
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return $Key; |
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} |
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# |
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# InsecureConnection: |
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# If insecure connections are allowd, |
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# exchange a challenge with the client to 'validate' the |
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# client (not really, but that's the protocol): |
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# We produce a challenge string that's sent to the client. |
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# The client must then echo the challenge verbatim to us. |
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# |
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# Parameter: |
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# Socket - Socket open on the client. |
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# Returns: |
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# 1 - success. |
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# 0 - failure (e.g.mismatch or insecure not allowed). |
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# |
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sub InsecureConnection { |
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my $Socket = shift; |
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# Don't even start if insecure connections are not allowed. |
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if(! $perlvar{londAllowInsecure}) { # Insecure connections not allowed. |
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return 0; |
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} |
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# Fabricate a challenge string and send it.. |
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my $challenge = "$$".time; # pid + time. |
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print $Socket "$challenge\n"; |
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&status("Waiting for challenge reply"); |
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my $answer = <$Socket>; |
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$answer =~s/\W//g; |
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if($challenge eq $answer) { |
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return 1; |
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} else { |
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logthis("<font color='blue'>WARNING client did not respond to challenge</font>"); |
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&status("No challenge reqply"); |
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return 0; |
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} |
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} |
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# |
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# Safely execute a command (as long as it's not a shel command and doesn |
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# not require/rely on shell escapes. The function operates by doing a |
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# a pipe based fork and capturing stdout and stderr from the pipe. |
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# |
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# Formal Parameters: |
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# $line - A line of text to be executed as a command. |
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# Returns: |
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# The output from that command. If the output is multiline the caller |
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# must know how to split up the output. |
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# |
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# |
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sub execute_command { |
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my ($line) = @_; |
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my @words = split(/\s/, $line); # Bust the command up into words. |
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my $output = ""; |
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my $pid = open(CHILD, "-|"); |
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if($pid) { # Parent process |
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Debug("In parent process for execute_command"); |
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my @data = <CHILD>; # Read the child's outupt... |
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close CHILD; |
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foreach my $output_line (@data) { |
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Debug("Adding $output_line"); |
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$output .= $output_line; # Presumably has a \n on it. |
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} |
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} else { # Child process |
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close (STDERR); |
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open (STDERR, ">&STDOUT");# Combine stderr, and stdout... |
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exec(@words); # won't return. |
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} |
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return $output; |
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} |
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# GetCertificate: Given a transaction that requires a certificate, |
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# this function will extract the certificate from the transaction |
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# request. Note that at this point, the only concept of a certificate |
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# is the hostname to which we are connected. |
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# |
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# Parameter: |
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# request - The request sent by our client (this parameterization may |
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# need to change when we really use a certificate granting |
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# authority. |
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# |
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sub GetCertificate { |
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my $request = shift; |
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return $clientip; |
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} |
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# |
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# Return true if client is a manager. |
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# |
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sub isManager { |
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return (($ConnectionType eq "manager") || ($ConnectionType eq "both")); |
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} |
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# |
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# Return tru if client can do client functions |
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# |
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sub isClient { |
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return (($ConnectionType eq "client") || ($ConnectionType eq "both")); |
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} |
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# |
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# ReadManagerTable: Reads in the current manager table. For now this is |
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# done on each manager authentication because: |
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# - These authentications are not frequent |
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# - This allows dynamic changes to the manager table |
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# without the need to signal to the lond. |
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# |
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sub ReadManagerTable { |
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# Clean out the old table first.. |
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foreach my $key (keys %managers) { |
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delete $managers{$key}; |
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} |
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my $tablename = $perlvar{'lonTabDir'}."/managers.tab"; |
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if (!open (MANAGERS, $tablename)) { |
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logthis('<font color="red">No manager table. Nobody can manage!!</font>'); |
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return; |
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} |
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while(my $host = <MANAGERS>) { |
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chomp($host); |
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if ($host =~ "^#") { # Comment line. |
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next; |
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} |
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if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member |
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# The entry is of the form: |
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# cluname:hostname |
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# cluname - A 'cluster hostname' is needed in order to negotiate |
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# the host key. |
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# hostname- The dns name of the host. |
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# |
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my($cluname, $dnsname) = split(/:/, $host); |
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my $ip = gethostbyname($dnsname); |
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if(defined($ip)) { # bad names don't deserve entry. |
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my $hostip = inet_ntoa($ip); |
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$managers{$hostip} = $cluname; |
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logthis('<font color="green"> registering manager '. |
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"$dnsname as $cluname with $hostip </font>\n"); |
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} |
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} else { |
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logthis('<font color="green"> existing host'." $host</font>\n"); |
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$managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if clumemeber |
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} |
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} |
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} |
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# |
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# ValidManager: Determines if a given certificate represents a valid manager. |
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# in this primitive implementation, the 'certificate' is |
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# just the connecting loncapa client name. This is checked |
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# against a valid client list in the configuration. |
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# |
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# |
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sub ValidManager { |
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my $certificate = shift; |
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return isManager; |
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} |
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# |
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# CopyFile: Called as part of the process of installing a |
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# new configuration file. This function copies an existing |
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# file to a backup file. |
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# Parameters: |
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# oldfile - Name of the file to backup. |
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# newfile - Name of the backup file. |
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# Return: |
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# 0 - Failure (errno has failure reason). |
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# 1 - Success. |
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# |
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sub CopyFile { |
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my ($oldfile, $newfile) = @_; |
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if (! copy($oldfile,$newfile)) { |
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return 0; |
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} |
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chmod(0660, $newfile); |
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return 1; |
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} |
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# |
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# Host files are passed out with externally visible host IPs. |
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# If, for example, we are behind a fire-wall or NAT host, our |
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# internally visible IP may be different than the externally |
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# visible IP. Therefore, we always adjust the contents of the |
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# host file so that the entry for ME is the IP that we believe |
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# we have. At present, this is defined as the entry that |
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# DNS has for us. If by some chance we are not able to get a |
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# DNS translation for us, then we assume that the host.tab file |
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# is correct. |
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# BUGBUGBUG - in the future, we really should see if we can |
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# easily query the interface(s) instead. |
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# Parameter(s): |
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# contents - The contents of the host.tab to check. |
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# Returns: |
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# newcontents - The adjusted contents. |
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# |
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# |
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sub AdjustHostContents { |
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my $contents = shift; |
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my $adjusted; |
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my $me = $perlvar{'lonHostID'}; |
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foreach my $line (split(/\n/,$contents)) { |
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if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/))) { |
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chomp($line); |
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my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line); |
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if ($id eq $me) { |
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my $ip = gethostbyname($name); |
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my $ipnew = inet_ntoa($ip); |
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$ip = $ipnew; |
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# Reconstruct the host line and append to adjusted: |
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my $newline = "$id:$domain:$role:$name:$ip"; |
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if($maxcon ne "") { # Not all hosts have loncnew tuning params |
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$newline .= ":$maxcon:$idleto:$mincon"; |
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} |
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$adjusted .= $newline."\n"; |
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} else { # Not me, pass unmodified. |
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$adjusted .= $line."\n"; |
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} |
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} else { # Blank or comment never re-written. |
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$adjusted .= $line."\n"; # Pass blanks and comments as is. |
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} |
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} |
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return $adjusted; |
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} |
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# |
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# InstallFile: Called to install an administrative file: |
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# - The file is created with <name>.tmp |
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# - The <name>.tmp file is then mv'd to <name> |
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# This lugubrious procedure is done to ensure that we are never without |
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# a valid, even if dated, version of the file regardless of who crashes |
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# and when the crash occurs. |
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# |
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# Parameters: |
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# Name of the file |
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# File Contents. |
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# Return: |
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# nonzero - success. |
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# 0 - failure and $! has an errno. |
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# |
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sub InstallFile { |
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my ($Filename, $Contents) = @_; |
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my $TempFile = $Filename.".tmp"; |
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# Open the file for write: |
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my $fh = IO::File->new("> $TempFile"); # Write to temp. |
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if(!(defined $fh)) { |
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&logthis('<font color="red"> Unable to create '.$TempFile."</font>"); |
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return 0; |
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} |
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# write the contents of the file: |
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print $fh ($Contents); |
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$fh->close; # In case we ever have a filesystem w. locking |
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chmod(0660, $TempFile); |
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# Now we can move install the file in position. |
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move($TempFile, $Filename); |
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return 1; |
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} |
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# |
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# ConfigFileFromSelector: converts a configuration file selector |
|
# (one of host or domain at this point) into a |
|
# configuration file pathname. |
|
# |
|
# Parameters: |
|
# selector - Configuration file selector. |
|
# Returns: |
|
# Full path to the file or undef if the selector is invalid. |
|
# |
|
sub ConfigFileFromSelector { |
|
my $selector = shift; |
|
my $tablefile; |
|
|
|
my $tabledir = $perlvar{'lonTabDir'}.'/'; |
|
if ($selector eq "hosts") { |
|
$tablefile = $tabledir."hosts.tab"; |
|
} elsif ($selector eq "domain") { |
|
$tablefile = $tabledir."domain.tab"; |
|
} else { |
|
return undef; |
|
} |
|
return $tablefile; |
|
|
|
} |
|
# |
|
# PushFile: Called to do an administrative push of a file. |
|
# - Ensure the file being pushed is one we support. |
|
# - Backup the old file to <filename.saved> |
|
# - Separate the contents of the new file out from the |
|
# rest of the request. |
|
# - Write the new file. |
|
# Parameter: |
|
# Request - The entire user request. This consists of a : separated |
|
# string pushfile:tablename:contents. |
|
# NOTE: The contents may have :'s in it as well making things a bit |
|
# more interesting... but not much. |
|
# Returns: |
|
# String to send to client ("ok" or "refused" if bad file). |
|
# |
|
sub PushFile { |
|
my $request = shift; |
|
my ($command, $filename, $contents) = split(":", $request, 3); |
|
|
|
# At this point in time, pushes for only the following tables are |
|
# supported: |
|
# hosts.tab ($filename eq host). |
|
# domain.tab ($filename eq domain). |
|
# Construct the destination filename or reject the request. |
|
# |
|
# lonManage is supposed to ensure this, however this session could be |
|
# part of some elaborate spoof that managed somehow to authenticate. |
|
# |
|
|
|
|
|
my $tablefile = ConfigFileFromSelector($filename); |
|
if(! (defined $tablefile)) { |
|
return "refused"; |
|
} |
|
# |
|
# >copy< the old table to the backup table |
|
# don't rename in case system crashes/reboots etc. in the time |
|
# window between a rename and write. |
|
# |
|
my $backupfile = $tablefile; |
|
$backupfile =~ s/\.tab$/.old/; |
|
if(!CopyFile($tablefile, $backupfile)) { |
|
&logthis('<font color="green"> CopyFile from '.$tablefile." to ".$backupfile." failed </font>"); |
|
return "error:$!"; |
|
} |
|
&logthis('<font color="green"> Pushfile: backed up ' |
|
.$tablefile." to $backupfile</font>"); |
|
|
|
# If the file being pushed is the host file, we adjust the entry for ourself so that the |
|
# IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible |
|
# to conceive of conditions where we don't have a DNS entry locally. This is possible in a |
|
# network sense but it doesn't make much sense in a LonCAPA sense so we ignore (for now) |
|
# that possibilty. |
|
|
|
if($filename eq "host") { |
|
$contents = AdjustHostContents($contents); |
|
} |
|
|
|
# Install the new file: |
|
|
|
if(!InstallFile($tablefile, $contents)) { |
|
&logthis('<font color="red"> Pushfile: unable to install ' |
|
.$tablefile." $! </font>"); |
|
return "error:$!"; |
|
} else { |
|
&logthis('<font color="green"> Installed new '.$tablefile |
|
."</font>"); |
|
|
|
} |
|
|
|
|
|
# Indicate success: |
|
|
|
return "ok"; |
|
|
|
} |
|
|
|
# |
|
# Called to re-init either lonc or lond. |
|
# |
|
# Parameters: |
|
# request - The full request by the client. This is of the form |
|
# reinit:<process> |
|
# where <process> is allowed to be either of |
|
# lonc or lond |
|
# |
|
# Returns: |
|
# The string to be sent back to the client either: |
|
# ok - Everything worked just fine. |
|
# error:why - There was a failure and why describes the reason. |
|
# |
|
# |
|
sub ReinitProcess { |
|
my $request = shift; |
|
|
|
|
|
# separate the request (reinit) from the process identifier and |
|
# validate it producing the name of the .pid file for the process. |
|
# |
|
# |
|
my ($junk, $process) = split(":", $request); |
|
my $processpidfile = $perlvar{'lonDaemons'}.'/logs/'; |
|
if($process eq 'lonc') { |
|
$processpidfile = $processpidfile."lonc.pid"; |
|
if (!open(PIDFILE, "< $processpidfile")) { |
|
return "error:Open failed for $processpidfile"; |
|
} |
|
my $loncpid = <PIDFILE>; |
|
close(PIDFILE); |
|
logthis('<font color="red"> Reinitializing lonc pid='.$loncpid |
|
."</font>"); |
|
kill("USR2", $loncpid); |
|
} elsif ($process eq 'lond') { |
|
logthis('<font color="red"> Reinitializing self (lond) </font>'); |
|
&UpdateHosts; # Lond is us!! |
|
} else { |
|
&logthis('<font color="yellow" Invalid reinit request for '.$process |
|
."</font>"); |
|
return "error:Invalid process identifier $process"; |
|
} |
|
return 'ok'; |
|
} |
|
# Validate a line in a configuration file edit script: |
|
# Validation includes: |
|
# - Ensuring the command is valid. |
|
# - Ensuring the command has sufficient parameters |
|
# Parameters: |
|
# scriptline - A line to validate (\n has been stripped for what it's worth). |
|
# |
|
# Return: |
|
# 0 - Invalid scriptline. |
|
# 1 - Valid scriptline |
|
# NOTE: |
|
# Only the command syntax is checked, not the executability of the |
|
# command. |
|
# |
|
sub isValidEditCommand { |
|
my $scriptline = shift; |
|
|
|
# Line elements are pipe separated: |
|
|
|
my ($command, $key, $newline) = split(/\|/, $scriptline); |
|
&logthis('<font color="green"> isValideditCommand checking: '. |
|
"Command = '$command', Key = '$key', Newline = '$newline' </font>\n"); |
|
|
|
if ($command eq "delete") { |
|
# |
|
# key with no newline. |
|
# |
|
if( ($key eq "") || ($newline ne "")) { |
|
return 0; # Must have key but no newline. |
|
} else { |
|
return 1; # Valid syntax. |
|
} |
|
} elsif ($command eq "replace") { |
|
# |
|
# key and newline: |
|
# |
|
if (($key eq "") || ($newline eq "")) { |
|
return 0; |
|
} else { |
|
return 1; |
|
} |
|
} elsif ($command eq "append") { |
|
if (($key ne "") && ($newline eq "")) { |
|
return 1; |
|
} else { |
|
return 0; |
|
} |
|
} else { |
|
return 0; # Invalid command. |
|
} |
|
return 0; # Should not get here!!! |
|
} |
|
# |
|
# ApplyEdit - Applies an edit command to a line in a configuration |
|
# file. It is the caller's responsiblity to validate the |
|
# edit line. |
|
# Parameters: |
|
# $directive - A single edit directive to apply. |
|
# Edit directives are of the form: |
|
# append|newline - Appends a new line to the file. |
|
# replace|key|newline - Replaces the line with key value 'key' |
|
# delete|key - Deletes the line with key value 'key'. |
|
# $editor - A config file editor object that contains the |
|
# file being edited. |
|
# |
|
sub ApplyEdit { |
|
|
|
my ($directive, $editor) = @_; |
|
|
|
# Break the directive down into its command and its parameters |
|
# (at most two at this point. The meaning of the parameters, if in fact |
|
# they exist depends on the command). |
|
|
|
my ($command, $p1, $p2) = split(/\|/, $directive); |
|
|
|
if($command eq "append") { |
|
$editor->Append($p1); # p1 - key p2 null. |
|
} elsif ($command eq "replace") { |
|
$editor->ReplaceLine($p1, $p2); # p1 - key p2 = newline. |
|
} elsif ($command eq "delete") { |
|
$editor->DeleteLine($p1); # p1 - key p2 null. |
|
} else { # Should not get here!!! |
|
die "Invalid command given to ApplyEdit $command" |
|
} |
|
} |
|
# |
|
# AdjustOurHost: |
|
# Adjusts a host file stored in a configuration file editor object |
|
# for the true IP address of this host. This is necessary for hosts |
|
# that live behind a firewall. |
|
# Those hosts have a publicly distributed IP of the firewall, but |
|
# internally must use their actual IP. We assume that a given |
|
# host only has a single IP interface for now. |
|
# Formal Parameters: |
|
# editor - The configuration file editor to adjust. This |
|
# editor is assumed to contain a hosts.tab file. |
|
# Strategy: |
|
# - Figure out our hostname. |
|
# - Lookup the entry for this host. |
|
# - Modify the line to contain our IP |
|
# - Do a replace for this host. |
|
sub AdjustOurHost { |
|
my $editor = shift; |
|
|
|
# figure out who I am. |
|
|
|
my $myHostName = $perlvar{'lonHostID'}; # LonCAPA hostname. |
|
|
|
# Get my host file entry. |
|
|
|
my $ConfigLine = $editor->Find($myHostName); |
|
if(! (defined $ConfigLine)) { |
|
die "AdjustOurHost - no entry for me in hosts file $myHostName"; |
|
} |
|
# figure out my IP: |
|
# Use the config line to get my hostname. |
|
# Use gethostbyname to translate that into an IP address. |
|
# |
|
my ($id,$domain,$role,$name,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine); |
|
# |
|
# Reassemble the config line from the elements in the list. |
|
# Note that if the loncnew items were not present before, they will |
|
# be now even if they would be empty |
|
# |
|
my $newConfigLine = $id; |
|
foreach my $item ($domain, $role, $name, $maxcon, $idleto, $mincon) { |
|
$newConfigLine .= ":".$item; |
|
} |
|
# Replace the line: |
|
|
|
$editor->ReplaceLine($id, $newConfigLine); |
|
|
|
} |
|
# |
|
# ReplaceConfigFile: |
|
# Replaces a configuration file with the contents of a |
|
# configuration file editor object. |
|
# This is done by: |
|
# - Copying the target file to <filename>.old |
|
# - Writing the new file to <filename>.tmp |
|
# - Moving <filename.tmp> -> <filename> |
|
# This laborious process ensures that the system is never without |
|
# a configuration file that's at least valid (even if the contents |
|
# may be dated). |
|
# Parameters: |
|
# filename - Name of the file to modify... this is a full path. |
|
# editor - Editor containing the file. |
|
# |
|
sub ReplaceConfigFile { |
|
|
|
my ($filename, $editor) = @_; |
|
|
|
CopyFile ($filename, $filename.".old"); |
|
|
|
my $contents = $editor->Get(); # Get the contents of the file. |
|
|
|
InstallFile($filename, $contents); |
|
} |
|
# |
|
# |
|
# Called to edit a configuration table file |
|
# Parameters: |
|
# request - The entire command/request sent by lonc or lonManage |
|
# Return: |
|
# The reply to send to the client. |
|
# |
|
sub EditFile { |
|
my $request = shift; |
|
|
|
# Split the command into it's pieces: edit:filetype:script |
|
|
|
my ($cmd, $filetype, $script) = split(/:/, $request,3); # : in script |
|
|
|
# Check the pre-coditions for success: |
|
|
|
if($cmd != "edit") { # Something is amiss afoot alack. |
|
return "error:edit request detected, but request != 'edit'\n"; |
|
} |
|
if( ($filetype ne "hosts") && |
|
($filetype ne "domain")) { |
|
return "error:edit requested with invalid file specifier: $filetype \n"; |
|
} |
|
|
|
# Split the edit script and check it's validity. |
|
|
|
my @scriptlines = split(/\n/, $script); # one line per element. |
|
my $linecount = scalar(@scriptlines); |
|
for(my $i = 0; $i < $linecount; $i++) { |
|
chomp($scriptlines[$i]); |
|
if(!isValidEditCommand($scriptlines[$i])) { |
|
return "error:edit with bad script line: '$scriptlines[$i]' \n"; |
|
} |
|
} |
|
|
|
# Execute the edit operation. |
|
# - Create a config file editor for the appropriate file and |
|
# - execute each command in the script: |
|
# |
|
my $configfile = ConfigFileFromSelector($filetype); |
|
if (!(defined $configfile)) { |
|
return "refused\n"; |
|
} |
|
my $editor = ConfigFileEdit->new($configfile); |
|
|
|
for (my $i = 0; $i < $linecount; $i++) { |
|
ApplyEdit($scriptlines[$i], $editor); |
|
} |
|
# If the file is the host file, ensure that our host is |
|
# adjusted to have our ip: |
|
# |
|
if($filetype eq "host") { |
|
AdjustOurHost($editor); |
|
} |
|
# Finally replace the current file with our file. |
|
# |
|
ReplaceConfigFile($configfile, $editor); |
|
|
|
return "ok\n"; |
|
} |
|
|
|
# read_profile |
|
# |
|
# Returns a set of specific entries from a user's profile file. |
|
# this is a utility function that is used by both get_profile_entry and |
|
# get_profile_entry_encrypted. |
|
# |
|
# Parameters: |
|
# udom - Domain in which the user exists. |
|
# uname - User's account name (loncapa account) |
|
# namespace - The profile namespace to open. |
|
# what - A set of & separated queries. |
|
# Returns: |
|
# If all ok: - The string that needs to be shipped back to the user. |
|
# If failure - A string that starts with error: followed by the failure |
|
# reason.. note that this probabyl gets shipped back to the |
|
# user as well. |
|
# |
|
sub read_profile { |
|
my ($udom, $uname, $namespace, $what) = @_; |
|
|
|
my $hashref = &tie_user_hash($udom, $uname, $namespace, |
|
&GDBM_READER()); |
|
if ($hashref) { |
|
my @queries=split(/\&/,$what); |
|
my $qresult=''; |
|
|
|
for (my $i=0;$i<=$#queries;$i++) { |
|
$qresult.="$hashref->{$queries[$i]}&"; # Presumably failure gives empty string. |
|
} |
|
$qresult=~s/\&$//; # Remove trailing & from last lookup. |
|
if (&untie_user_hash($hashref)) { |
|
return $qresult; |
|
} else { |
|
return "error: ".($!+0)." untie (GDBM) Failed"; |
|
} |
|
} else { |
|
if ($!+0 == 2) { |
|
return "error:No such file or GDBM reported bad block error"; |
|
} else { |
|
return "error: ".($!+0)." tie (GDBM) Failed"; |
|
} |
|
} |
|
|
|
} |
|
#--------------------- Request Handlers -------------------------------------------- |
|
# |
|
# By convention each request handler registers itself prior to the sub |
|
# declaration: |
|
# |
|
|
|
#++ |
|
# |
|
# Handles ping requests. |
|
# Parameters: |
|
# $cmd - the actual keyword that invoked us. |
|
# $tail - the tail of the request that invoked us. |
|
# $replyfd- File descriptor connected to the client |
|
# Implicit Inputs: |
|
# $currenthostid - Global variable that carries the name of the host we are |
|
# known as. |
|
# Returns: |
|
# 1 - Ok to continue processing. |
|
# 0 - Program should exit. |
|
# Side effects: |
|
# Reply information is sent to the client. |
|
sub ping_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
Debug("$cmd $tail $client .. $currenthostid:"); |
|
|
|
Reply( $client,\$currenthostid,"$cmd:$tail"); |
|
|
|
return 1; |
|
} |
|
®ister_handler("ping", \&ping_handler, 0, 1, 1); # Ping unencoded, client or manager. |
|
|
|
#++ |
|
# |
|
# Handles pong requests. Pong replies with our current host id, and |
|
# the results of a ping sent to us via our lonc. |
|
# |
|
# Parameters: |
|
# $cmd - the actual keyword that invoked us. |
|
# $tail - the tail of the request that invoked us. |
|
# $replyfd- File descriptor connected to the client |
|
# Implicit Inputs: |
|
# $currenthostid - Global variable that carries the name of the host we are |
|
# connected to. |
|
# Returns: |
|
# 1 - Ok to continue processing. |
|
# 0 - Program should exit. |
|
# Side effects: |
|
# Reply information is sent to the client. |
|
sub pong_handler { |
|
my ($cmd, $tail, $replyfd) = @_; |
|
|
|
my $reply=&Apache::lonnet::reply("ping",$clientname); |
|
&Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail"); |
|
return 1; |
|
} |
|
®ister_handler("pong", \&pong_handler, 0, 1, 1); # Pong unencoded, client or manager |
|
|
|
#++ |
|
# Called to establish an encrypted session key with the remote client. |
|
# Note that with secure lond, in most cases this function is never |
|
# invoked. Instead, the secure session key is established either |
|
# via a local file that's locked down tight and only lives for a short |
|
# time, or via an ssl tunnel...and is generated from a bunch-o-random |
|
# bits from /dev/urandom, rather than the predictable pattern used by |
|
# by this sub. This sub is only used in the old-style insecure |
|
# key negotiation. |
|
# Parameters: |
|
# $cmd - the actual keyword that invoked us. |
|
# $tail - the tail of the request that invoked us. |
|
# $replyfd- File descriptor connected to the client |
|
# Implicit Inputs: |
|
# $currenthostid - Global variable that carries the name of the host |
|
# known as. |
|
# $clientname - Global variable that carries the name of the hsot we're connected to. |
|
# Returns: |
|
# 1 - Ok to continue processing. |
|
# 0 - Program should exit. |
|
# Implicit Outputs: |
|
# Reply information is sent to the client. |
|
# $cipher is set with a reference to a new IDEA encryption object. |
|
# |
|
sub establish_key_handler { |
|
my ($cmd, $tail, $replyfd) = @_; |
|
|
|
my $buildkey=time.$$.int(rand 100000); |
|
$buildkey=~tr/1-6/A-F/; |
|
$buildkey=int(rand 100000).$buildkey.int(rand 100000); |
|
my $key=$currenthostid.$clientname; |
|
$key=~tr/a-z/A-Z/; |
|
$key=~tr/G-P/0-9/; |
|
$key=~tr/Q-Z/0-9/; |
|
$key=$key.$buildkey.$key.$buildkey.$key.$buildkey; |
|
$key=substr($key,0,32); |
|
my $cipherkey=pack("H32",$key); |
|
$cipher=new IDEA $cipherkey; |
|
&Reply($replyfd, \$buildkey, "$cmd:$tail"); |
|
|
|
return 1; |
|
|
|
} |
|
®ister_handler("ekey", \&establish_key_handler, 0, 1,1); |
|
|
|
# Handler for the load command. Returns the current system load average |
|
# to the requestor. |
|
# |
|
# Parameters: |
|
# $cmd - the actual keyword that invoked us. |
|
# $tail - the tail of the request that invoked us. |
|
# $replyfd- File descriptor connected to the client |
|
# Implicit Inputs: |
|
# $currenthostid - Global variable that carries the name of the host |
|
# known as. |
|
# $clientname - Global variable that carries the name of the hsot we're connected to. |
|
# Returns: |
|
# 1 - Ok to continue processing. |
|
# 0 - Program should exit. |
|
# Side effects: |
|
# Reply information is sent to the client. |
|
sub load_handler { |
|
my ($cmd, $tail, $replyfd) = @_; |
|
|
|
# Get the load average from /proc/loadavg and calculate it as a percentage of |
|
# the allowed load limit as set by the perl global variable lonLoadLim |
|
|
|
my $loadavg; |
|
my $loadfile=IO::File->new('/proc/loadavg'); |
|
|
|
$loadavg=<$loadfile>; |
|
$loadavg =~ s/\s.*//g; # Extract the first field only. |
|
|
|
my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'}; |
|
|
|
&Reply( $replyfd, \$loadpercent, "$cmd:$tail"); |
|
|
|
return 1; |
|
} |
|
®ister_handler("load", \&load_handler, 0, 1, 0); |
|
|
|
# |
|
# Process the userload request. This sub returns to the client the current |
|
# user load average. It can be invoked either by clients or managers. |
|
# |
|
# Parameters: |
|
# $cmd - the actual keyword that invoked us. |
|
# $tail - the tail of the request that invoked us. |
|
# $replyfd- File descriptor connected to the client |
|
# Implicit Inputs: |
|
# $currenthostid - Global variable that carries the name of the host |
|
# known as. |
|
# $clientname - Global variable that carries the name of the hsot we're connected to. |
|
# Returns: |
|
# 1 - Ok to continue processing. |
|
# 0 - Program should exit |
|
# Implicit inputs: |
|
# whatever the userload() function requires. |
|
# Implicit outputs: |
|
# the reply is written to the client. |
|
# |
|
sub user_load_handler { |
|
my ($cmd, $tail, $replyfd) = @_; |
|
|
|
my $userloadpercent=&Apache::lonnet::userload(); |
|
&Reply($replyfd, \$userloadpercent, "$cmd:$tail"); |
|
|
|
return 1; |
|
} |
|
®ister_handler("userload", \&user_load_handler, 0, 1, 0); |
|
|
|
# Process a request for the authorization type of a user: |
|
# (userauth). |
|
# |
|
# Parameters: |
|
# $cmd - the actual keyword that invoked us. |
|
# $tail - the tail of the request that invoked us. |
|
# $replyfd- File descriptor connected to the client |
|
# Returns: |
|
# 1 - Ok to continue processing. |
|
# 0 - Program should exit |
|
# Implicit outputs: |
|
# The user authorization type is written to the client. |
|
# |
|
sub user_authorization_type { |
|
my ($cmd, $tail, $replyfd) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
# Pull the domain and username out of the command tail. |
|
# and call get_auth_type to determine the authentication type. |
|
|
|
my ($udom,$uname)=split(/:/,$tail); |
|
my $result = &get_auth_type($udom, $uname); |
|
if($result eq "nouser") { |
|
&Failure( $replyfd, "unknown_user\n", $userinput); |
|
} else { |
|
# |
|
# We only want to pass the second field from get_auth_type |
|
# for ^krb.. otherwise we'll be handing out the encrypted |
|
# password for internals e.g. |
|
# |
|
my ($type,$otherinfo) = split(/:/,$result); |
|
if($type =~ /^krb/) { |
|
$type = $result; |
|
} else { |
|
$type .= ':'; |
|
} |
|
&Reply( $replyfd, \$type, $userinput); |
|
} |
|
|
|
return 1; |
|
} |
|
®ister_handler("currentauth", \&user_authorization_type, 1, 1, 0); |
|
|
|
# Process a request by a manager to push a hosts or domain table |
|
# to us. We pick apart the command and pass it on to the subs |
|
# that already exist to do this. |
|
# |
|
# Parameters: |
|
# $cmd - the actual keyword that invoked us. |
|
# $tail - the tail of the request that invoked us. |
|
# $client - File descriptor connected to the client |
|
# Returns: |
|
# 1 - Ok to continue processing. |
|
# 0 - Program should exit |
|
# Implicit Output: |
|
# a reply is written to the client. |
|
sub push_file_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
# At this time we only know that the IP of our partner is a valid manager |
|
# the code below is a hook to do further authentication (e.g. to resolve |
|
# spoofing). |
|
|
|
my $cert = &GetCertificate($userinput); |
|
if(&ValidManager($cert)) { |
|
|
|
# Now presumably we have the bona fides of both the peer host and the |
|
# process making the request. |
|
|
|
my $reply = &PushFile($userinput); |
|
&Reply($client, \$reply, $userinput); |
|
|
|
} else { |
|
&Failure( $client, "refused\n", $userinput); |
|
} |
|
return 1; |
|
} |
|
®ister_handler("pushfile", \&push_file_handler, 1, 0, 1); |
|
|
|
# The du_handler routine should be considered obsolete and is retained |
|
# for communication with legacy servers. Please see the du2_handler. |
|
# |
|
# du - list the disk usage of a directory recursively. |
|
# |
|
# note: stolen code from the ls file handler |
|
# under construction by Rick Banghart |
|
# . |
|
# Parameters: |
|
# $cmd - The command that dispatched us (du). |
|
# $ududir - The directory path to list... I'm not sure what this |
|
# is relative as things like ls:. return e.g. |
|
# no_such_dir. |
|
# $client - Socket open on the client. |
|
# Returns: |
|
# 1 - indicating that the daemon should not disconnect. |
|
# Side Effects: |
|
# The reply is written to $client. |
|
# |
|
sub du_handler { |
|
my ($cmd, $ududir, $client) = @_; |
|
($ududir) = split(/:/,$ududir); # Make 'telnet' testing easier. |
|
my $userinput = "$cmd:$ududir"; |
|
|
|
if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) { |
|
&Failure($client,"refused\n","$cmd:$ududir"); |
|
return 1; |
|
} |
|
# Since $ududir could have some nasties in it, |
|
# we will require that ududir is a valid |
|
# directory. Just in case someone tries to |
|
# slip us a line like .;(cd /home/httpd rm -rf*) |
|
# etc. |
|
# |
|
if (-d $ududir) { |
|
my $total_size=0; |
|
my $code=sub { |
|
if ($_=~/\.\d+\./) { return;} |
|
if ($_=~/\.meta$/) { return;} |
|
if (-d $_) { return;} |
|
$total_size+=(stat($_))[7]; |
|
}; |
|
chdir($ududir); |
|
find($code,$ududir); |
|
$total_size=int($total_size/1024); |
|
&Reply($client,\$total_size,"$cmd:$ududir"); |
|
} else { |
|
&Failure($client, "bad_directory:$ududir\n","$cmd:$ududir"); |
|
} |
|
return 1; |
|
} |
|
®ister_handler("du", \&du_handler, 0, 1, 0); |
|
|
|
# Please also see the du_handler, which is obsoleted by du2. |
|
# du2_handler differs from du_handler in that required path to directory |
|
# provided by &propath() is prepended in the handler instead of on the |
|
# client side. |
|
# |
|
# du2 - list the disk usage of a directory recursively. |
|
# |
|
# Parameters: |
|
# $cmd - The command that dispatched us (du). |
|
# $tail - The tail of the request that invoked us. |
|
# $tail is a : separated list of the following: |
|
# - $ududir - directory path to list (before prepending) |
|
# - $getpropath = 1 if &propath() should prepend |
|
# - $uname - username to use for &propath or user dir |
|
# - $udom - domain to use for &propath or user dir |
|
# All are escaped. |
|
# $client - Socket open on the client. |
|
# Returns: |
|
# 1 - indicating that the daemon should not disconnect. |
|
# Side Effects: |
|
# The reply is written to $client. |
|
# |
|
|
|
sub du2_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail)); |
|
my $userinput = "$cmd:$tail"; |
|
if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) { |
|
&Failure($client,"refused\n","$cmd:$tail"); |
|
return 1; |
|
} |
|
if ($getpropath) { |
|
if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) { |
|
$ududir = &propath($udom,$uname).'/'.$ududir; |
|
} else { |
|
&Failure($client,"refused\n","$cmd:$tail"); |
|
return 1; |
|
} |
|
} |
|
# Since $ududir could have some nasties in it, |
|
# we will require that ududir is a valid |
|
# directory. Just in case someone tries to |
|
# slip us a line like .;(cd /home/httpd rm -rf*) |
|
# etc. |
|
# |
|
if (-d $ududir) { |
|
my $total_size=0; |
|
my $code=sub { |
|
if ($_=~/\.\d+\./) { return;} |
|
if ($_=~/\.meta$/) { return;} |
|
if (-d $_) { return;} |
|
$total_size+=(stat($_))[7]; |
|
}; |
|
chdir($ududir); |
|
find($code,$ududir); |
|
$total_size=int($total_size/1024); |
|
&Reply($client,\$total_size,"$cmd:$ududir"); |
|
} else { |
|
&Failure($client, "bad_directory:$ududir\n","$cmd:$tail"); |
|
} |
|
return 1; |
|
} |
|
®ister_handler("du2", \&du2_handler, 0, 1, 0); |
|
|
|
# |
|
# The ls_handler routine should be considered obsolete and is retained |
|
# for communication with legacy servers. Please see the ls3_handler. |
|
# |
|
# ls - list the contents of a directory. For each file in the |
|
# selected directory the filename followed by the full output of |
|
# the stat function is returned. The returned info for each |
|
# file are separated by ':'. The stat fields are separated by &'s. |
|
# Parameters: |
|
# $cmd - The command that dispatched us (ls). |
|
# $ulsdir - The directory path to list... I'm not sure what this |
|
# is relative as things like ls:. return e.g. |
|
# no_such_dir. |
|
# $client - Socket open on the client. |
|
# Returns: |
|
# 1 - indicating that the daemon should not disconnect. |
|
# Side Effects: |
|
# The reply is written to $client. |
|
# |
|
sub ls_handler { |
|
# obsoleted by ls2_handler |
|
my ($cmd, $ulsdir, $client) = @_; |
|
|
|
my $userinput = "$cmd:$ulsdir"; |
|
|
|
my $obs; |
|
my $rights; |
|
my $ulsout=''; |
|
my $ulsfn; |
|
if (-e $ulsdir) { |
|
if(-d $ulsdir) { |
|
if (opendir(LSDIR,$ulsdir)) { |
|
while ($ulsfn=readdir(LSDIR)) { |
|
undef($obs); |
|
undef($rights); |
|
my @ulsstats=stat($ulsdir.'/'.$ulsfn); |
|
#We do some obsolete checking here |
|
if(-e $ulsdir.'/'.$ulsfn.".meta") { |
|
open(FILE, $ulsdir.'/'.$ulsfn.".meta"); |
|
my @obsolete=<FILE>; |
|
foreach my $obsolete (@obsolete) { |
|
if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; } |
|
if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; } |
|
} |
|
} |
|
$ulsout.=$ulsfn.'&'.join('&',@ulsstats); |
|
if($obs eq '1') { $ulsout.="&1"; } |
|
else { $ulsout.="&0"; } |
|
if($rights eq '1') { $ulsout.="&1:"; } |
|
else { $ulsout.="&0:"; } |
|
} |
|
closedir(LSDIR); |
|
} |
|
} else { |
|
my @ulsstats=stat($ulsdir); |
|
$ulsout.=$ulsfn.'&'.join('&',@ulsstats).':'; |
|
} |
|
} else { |
|
$ulsout='no_such_dir'; |
|
} |
|
if ($ulsout eq '') { $ulsout='empty'; } |
|
&Reply($client, \$ulsout, $userinput); # This supports debug logging. |
|
|
|
return 1; |
|
|
|
} |
|
®ister_handler("ls", \&ls_handler, 0, 1, 0); |
|
|
|
# The ls2_handler routine should be considered obsolete and is retained |
|
# for communication with legacy servers. Please see the ls3_handler. |
|
# Please also see the ls_handler, which was itself obsoleted by ls2. |
|
# ls2_handler differs from ls_handler in that it escapes its return |
|
# values before concatenating them together with ':'s. |
|
# |
|
# ls2 - list the contents of a directory. For each file in the |
|
# selected directory the filename followed by the full output of |
|
# the stat function is returned. The returned info for each |
|
# file are separated by ':'. The stat fields are separated by &'s. |
|
# Parameters: |
|
# $cmd - The command that dispatched us (ls). |
|
# $ulsdir - The directory path to list... I'm not sure what this |
|
# is relative as things like ls:. return e.g. |
|
# no_such_dir. |
|
# $client - Socket open on the client. |
|
# Returns: |
|
# 1 - indicating that the daemon should not disconnect. |
|
# Side Effects: |
|
# The reply is written to $client. |
|
# |
|
sub ls2_handler { |
|
my ($cmd, $ulsdir, $client) = @_; |
|
|
|
my $userinput = "$cmd:$ulsdir"; |
|
|
|
my $obs; |
|
my $rights; |
|
my $ulsout=''; |
|
my $ulsfn; |
|
if (-e $ulsdir) { |
|
if(-d $ulsdir) { |
|
if (opendir(LSDIR,$ulsdir)) { |
|
while ($ulsfn=readdir(LSDIR)) { |
|
undef($obs); |
|
undef($rights); |
|
my @ulsstats=stat($ulsdir.'/'.$ulsfn); |
|
#We do some obsolete checking here |
|
if(-e $ulsdir.'/'.$ulsfn.".meta") { |
|
open(FILE, $ulsdir.'/'.$ulsfn.".meta"); |
|
my @obsolete=<FILE>; |
|
foreach my $obsolete (@obsolete) { |
|
if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; } |
|
if($obsolete =~ m|(<copyright>)(default)|) { |
|
$rights = 1; |
|
} |
|
} |
|
} |
|
my $tmp = $ulsfn.'&'.join('&',@ulsstats); |
|
if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; } |
|
if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; } |
|
$ulsout.= &escape($tmp).':'; |
|
} |
|
closedir(LSDIR); |
|
} |
|
} else { |
|
my @ulsstats=stat($ulsdir); |
|
$ulsout.=$ulsfn.'&'.join('&',@ulsstats).':'; |
|
} |
|
} else { |
|
$ulsout='no_such_dir'; |
|
} |
|
if ($ulsout eq '') { $ulsout='empty'; } |
|
&Reply($client, \$ulsout, $userinput); # This supports debug logging. |
|
return 1; |
|
} |
|
®ister_handler("ls2", \&ls2_handler, 0, 1, 0); |
|
# |
|
# ls3 - list the contents of a directory. For each file in the |
|
# selected directory the filename followed by the full output of |
|
# the stat function is returned. The returned info for each |
|
# file are separated by ':'. The stat fields are separated by &'s. |
|
# Parameters: |
|
# $cmd - The command that dispatched us (ls). |
|
# $tail - The tail of the request that invoked us. |
|
# $tail is a : separated list of the following: |
|
# - $ulsdir - directory path to list (before prepending) |
|
# - $getpropath = 1 if &propath() should prepend |
|
# - $getuserdir = 1 if path to user dir in lonUsers should |
|
# prepend |
|
# - $alternate_root - path to prepend |
|
# - $uname - username to use for &propath or user dir |
|
# - $udom - domain to use for &propath or user dir |
|
# All of these except $getpropath and &getuserdir are escaped. |
|
# no_such_dir. |
|
# $client - Socket open on the client. |
|
# Returns: |
|
# 1 - indicating that the daemon should not disconnect. |
|
# Side Effects: |
|
# The reply is written to $client. |
|
# |
|
|
|
sub ls3_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
my $userinput = "$cmd:$tail"; |
|
my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) = |
|
split(/:/,$tail); |
|
if (defined($ulsdir)) { |
|
$ulsdir = &unescape($ulsdir); |
|
} |
|
if (defined($alternate_root)) { |
|
$alternate_root = &unescape($alternate_root); |
|
} |
|
if (defined($uname)) { |
|
$uname = &unescape($uname); |
|
} |
|
if (defined($udom)) { |
|
$udom = &unescape($udom); |
|
} |
|
|
|
my $dir_root = $perlvar{'lonDocRoot'}; |
|
if ($getpropath) { |
|
if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) { |
|
$dir_root = &propath($udom,$uname); |
|
$dir_root =~ s/\/$//; |
|
} else { |
|
&Failure($client,"refused\n","$cmd:$tail"); |
|
return 1; |
|
} |
|
} elsif ($getuserdir) { |
|
if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) { |
|
my $subdir=$uname.'__'; |
|
$subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/; |
|
$dir_root = $Apache::lonnet::perlvar{'lonUsersDir'} |
|
."/$udom/$subdir/$uname"; |
|
} else { |
|
&Failure($client,"refused\n","$cmd:$tail"); |
|
return 1; |
|
} |
|
} elsif ($alternate_root ne '') { |
|
$dir_root = $alternate_root; |
|
} |
|
if (($dir_root ne '') && ($dir_root ne '/')) { |
|
if ($ulsdir =~ /^\//) { |
|
$ulsdir = $dir_root.$ulsdir; |
|
} else { |
|
$ulsdir = $dir_root.'/'.$ulsdir; |
|
} |
|
} |
|
my $obs; |
|
my $rights; |
|
my $ulsout=''; |
|
my $ulsfn; |
|
if (-e $ulsdir) { |
|
if(-d $ulsdir) { |
|
if (opendir(LSDIR,$ulsdir)) { |
|
while ($ulsfn=readdir(LSDIR)) { |
|
undef($obs); |
|
undef($rights); |
|
my @ulsstats=stat($ulsdir.'/'.$ulsfn); |
|
#We do some obsolete checking here |
|
if(-e $ulsdir.'/'.$ulsfn.".meta") { |
|
open(FILE, $ulsdir.'/'.$ulsfn.".meta"); |
|
my @obsolete=<FILE>; |
|
foreach my $obsolete (@obsolete) { |
|
if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; } |
|
if($obsolete =~ m|(<copyright>)(default)|) { |
|
$rights = 1; |
|
} |
|
} |
|
} |
|
my $tmp = $ulsfn.'&'.join('&',@ulsstats); |
|
if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; } |
|
if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; } |
|
$ulsout.= &escape($tmp).':'; |
|
} |
|
closedir(LSDIR); |
|
} |
|
} else { |
|
my @ulsstats=stat($ulsdir); |
|
$ulsout.=$ulsfn.'&'.join('&',@ulsstats).':'; |
|
} |
|
} else { |
|
$ulsout='no_such_dir'; |
|
} |
|
if ($ulsout eq '') { $ulsout='empty'; } |
|
&Reply($client, \$ulsout, $userinput); # This supports debug logging. |
|
return 1; |
|
} |
|
®ister_handler("ls3", \&ls3_handler, 0, 1, 0); |
|
|
|
sub server_timezone_handler { |
|
my ($cmd,$tail,$client) = @_; |
|
my $userinput = "$cmd:$tail"; |
|
my $timezone; |
|
my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE |
|
my $tzfile = '/etc/timezone'; # Debian/Ubuntu |
|
if (-e $clockfile) { |
|
if (open(my $fh,"<$clockfile")) { |
|
while (<$fh>) { |
|
next if (/^[\#\s]/); |
|
if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) { |
|
$timezone = $1; |
|
last; |
|
} |
|
} |
|
close($fh); |
|
} |
|
} elsif (-e $tzfile) { |
|
if (open(my $fh,"<$tzfile")) { |
|
$timezone = <$fh>; |
|
close($fh); |
|
chomp($timezone); |
|
if ($timezone =~ m{^Etc/(\w+)$}) { |
|
$timezone = $1; |
|
} |
|
} |
|
} |
|
&Reply($client,\$timezone,$userinput); # This supports debug logging. |
|
return 1; |
|
} |
|
®ister_handler("servertimezone", \&server_timezone_handler, 0, 1, 0); |
|
|
|
# Process a reinit request. Reinit requests that either |
|
# lonc or lond be reinitialized so that an updated |
|
# host.tab or domain.tab can be processed. |
|
# |
|
# Parameters: |
|
# $cmd - the actual keyword that invoked us. |
|
# $tail - the tail of the request that invoked us. |
|
# $client - File descriptor connected to the client |
|
# Returns: |
|
# 1 - Ok to continue processing. |
|
# 0 - Program should exit |
|
# Implicit output: |
|
# a reply is sent to the client. |
|
# |
|
sub reinit_process_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
my $cert = &GetCertificate($userinput); |
|
if(&ValidManager($cert)) { |
|
chomp($userinput); |
|
my $reply = &ReinitProcess($userinput); |
|
&Reply( $client, \$reply, $userinput); |
|
} else { |
|
&Failure( $client, "refused\n", $userinput); |
|
} |
|
return 1; |
|
} |
|
®ister_handler("reinit", \&reinit_process_handler, 1, 0, 1); |
|
|
|
# Process the editing script for a table edit operation. |
|
# the editing operation must be encrypted and requested by |
|
# a manager host. |
|
# |
|
# Parameters: |
|
# $cmd - the actual keyword that invoked us. |
|
# $tail - the tail of the request that invoked us. |
|
# $client - File descriptor connected to the client |
|
# Returns: |
|
# 1 - Ok to continue processing. |
|
# 0 - Program should exit |
|
# Implicit output: |
|
# a reply is sent to the client. |
|
# |
|
sub edit_table_handler { |
|
my ($command, $tail, $client) = @_; |
|
|
|
my $userinput = "$command:$tail"; |
|
|
|
my $cert = &GetCertificate($userinput); |
|
if(&ValidManager($cert)) { |
|
my($filetype, $script) = split(/:/, $tail); |
|
if (($filetype eq "hosts") || |
|
($filetype eq "domain")) { |
|
if($script ne "") { |
|
&Reply($client, # BUGBUG - EditFile |
|
&EditFile($userinput), # could fail. |
|
$userinput); |
|
} else { |
|
&Failure($client,"refused\n",$userinput); |
|
} |
|
} else { |
|
&Failure($client,"refused\n",$userinput); |
|
} |
|
} else { |
|
&Failure($client,"refused\n",$userinput); |
|
} |
|
return 1; |
|
} |
|
®ister_handler("edit", \&edit_table_handler, 1, 0, 1); |
|
|
|
# |
|
# Authenticate a user against the LonCAPA authentication |
|
# database. Note that there are several authentication |
|
# possibilities: |
|
# - unix - The user can be authenticated against the unix |
|
# password file. |
|
# - internal - The user can be authenticated against a purely |
|
# internal per user password file. |
|
# - kerberos - The user can be authenticated against either a kerb4 or kerb5 |
|
# ticket granting authority. |
|
# - user - The person tailoring LonCAPA can supply a user authentication |
|
# mechanism that is per system. |
|
# |
|
# Parameters: |
|
# $cmd - The command that got us here. |
|
# $tail - Tail of the command (remaining parameters). |
|
# $client - File descriptor connected to client. |
|
# Returns |
|
# 0 - Requested to exit, caller should shut down. |
|
# 1 - Continue processing. |
|
# Implicit inputs: |
|
# The authentication systems describe above have their own forms of implicit |
|
# input into the authentication process that are described above. |
|
# |
|
sub authenticate_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
|
|
# Regenerate the full input line |
|
|
|
my $userinput = $cmd.":".$tail; |
|
|
|
# udom - User's domain. |
|
# uname - Username. |
|
# upass - User's password. |
|
# checkdefauth - Pass to validate_user() to try authentication |
|
# with default auth type(s) if no user account. |
|
|
|
my ($udom, $uname, $upass, $checkdefauth)=split(/:/,$tail); |
|
&Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth"); |
|
chomp($upass); |
|
$upass=&unescape($upass); |
|
|
|
my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth); |
|
if($pwdcorrect) { |
|
&Reply( $client, "authorized\n", $userinput); |
|
# |
|
# Bad credentials: Failed to authorize |
|
# |
|
} else { |
|
&Failure( $client, "non_authorized\n", $userinput); |
|
} |
|
|
|
return 1; |
|
} |
|
®ister_handler("auth", \&authenticate_handler, 1, 1, 0); |
|
|
|
# |
|
# Change a user's password. Note that this function is complicated by |
|
# the fact that a user may be authenticated in more than one way: |
|
# At present, we are not able to change the password for all types of |
|
# authentication methods. Only for: |
|
# unix - unix password or shadow passoword style authentication. |
|
# local - Locally written authentication mechanism. |
|
# For now, kerb4 and kerb5 password changes are not supported and result |
|
# in an error. |
|
# FUTURE WORK: |
|
# Support kerberos passwd changes? |
|
# Parameters: |
|
# $cmd - The command that got us here. |
|
# $tail - Tail of the command (remaining parameters). |
|
# $client - File descriptor connected to client. |
|
# Returns |
|
# 0 - Requested to exit, caller should shut down. |
|
# 1 - Continue processing. |
|
# Implicit inputs: |
|
# The authentication systems describe above have their own forms of implicit |
|
# input into the authentication process that are described above. |
|
sub change_password_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = $cmd.":".$tail; # Reconstruct client's string. |
|
|
|
# |
|
# udom - user's domain. |
|
# uname - Username. |
|
# upass - Current password. |
|
# npass - New password. |
|
# context - Context in which this was called |
|
# (preferences or reset_by_email). |
|
# lonhost - HostID of server where request originated |
|
|
|
my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail); |
|
|
|
$upass=&unescape($upass); |
|
$npass=&unescape($npass); |
|
&Debug("Trying to change password for $uname"); |
|
|
|
# First require that the user can be authenticated with their |
|
# old password unless context was 'reset_by_email': |
|
|
|
my ($validated,$failure); |
|
if ($context eq 'reset_by_email') { |
|
if ($lonhost eq '') { |
|
$failure = 'invalid_client'; |
|
} else { |
|
$validated = 1; |
|
} |
|
} else { |
|
$validated = &validate_user($udom, $uname, $upass); |
|
} |
|
if($validated) { |
|
my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd. |
|
|
|
my ($howpwd,$contentpwd)=split(/:/,$realpasswd); |
|
if ($howpwd eq 'internal') { |
|
&Debug("internal auth"); |
|
my $salt=time; |
|
$salt=substr($salt,6,2); |
|
my $ncpass=crypt($npass,$salt); |
|
if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) { |
|
my $msg="Result of password change for $uname: pwchange_success"; |
|
if ($lonhost) { |
|
$msg .= " - request originated from: $lonhost"; |
|
} |
|
&logthis($msg); |
|
&Reply($client, "ok\n", $userinput); |
|
} else { |
|
&logthis("Unable to open $uname passwd " |
|
."to change password"); |
|
&Failure( $client, "non_authorized\n",$userinput); |
|
} |
|
} elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') { |
|
my $result = &change_unix_password($uname, $npass); |
|
&logthis("Result of password change for $uname: ". |
|
$result); |
|
&Reply($client, \$result, $userinput); |
|
} else { |
|
# this just means that the current password mode is not |
|
# one we know how to change (e.g the kerberos auth modes or |
|
# locally written auth handler). |
|
# |
|
&Failure( $client, "auth_mode_error\n", $userinput); |
|
} |
|
|
|
} else { |
|
if ($failure eq '') { |
|
$failure = 'non_authorized'; |
|
} |
|
&Failure( $client, "$failure\n", $userinput); |
|
} |
|
|
|
return 1; |
|
} |
|
®ister_handler("passwd", \&change_password_handler, 1, 1, 0); |
|
|
|
# |
|
# Create a new user. User in this case means a lon-capa user. |
|
# The user must either already exist in some authentication realm |
|
# like kerberos or the /etc/passwd. If not, a user completely local to |
|
# this loncapa system is created. |
|
# |
|
# Parameters: |
|
# $cmd - The command that got us here. |
|
# $tail - Tail of the command (remaining parameters). |
|
# $client - File descriptor connected to client. |
|
# Returns |
|
# 0 - Requested to exit, caller should shut down. |
|
# 1 - Continue processing. |
|
# Implicit inputs: |
|
# The authentication systems describe above have their own forms of implicit |
|
# input into the authentication process that are described above. |
|
sub add_user_handler { |
|
|
|
my ($cmd, $tail, $client) = @_; |
|
|
|
|
|
my ($udom,$uname,$umode,$npass)=split(/:/,$tail); |
|
my $userinput = $cmd.":".$tail; # Reconstruct the full request line. |
|
|
|
&Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname); |
|
|
|
|
|
if($udom eq $currentdomainid) { # Reject new users for other domains... |
|
|
|
my $oldumask=umask(0077); |
|
chomp($npass); |
|
$npass=&unescape($npass); |
|
my $passfilename = &password_path($udom, $uname); |
|
&Debug("Password file created will be:".$passfilename); |
|
if (-e $passfilename) { |
|
&Failure( $client, "already_exists\n", $userinput); |
|
} else { |
|
my $fperror=''; |
|
if (!&mkpath($passfilename)) { |
|
$fperror="error: ".($!+0)." mkdir failed while attempting " |
|
."makeuser"; |
|
} |
|
unless ($fperror) { |
|
my $result=&make_passwd_file($uname, $umode,$npass, $passfilename); |
|
&Reply($client,\$result, $userinput); #BUGBUG - could be fail |
|
} else { |
|
&Failure($client, \$fperror, $userinput); |
|
} |
|
} |
|
umask($oldumask); |
|
} else { |
|
&Failure($client, "not_right_domain\n", |
|
$userinput); # Even if we are multihomed. |
|
|
|
} |
|
return 1; |
|
|
|
} |
|
®ister_handler("makeuser", \&add_user_handler, 1, 1, 0); |
|
|
|
# |
|
# Change the authentication method of a user. Note that this may |
|
# also implicitly change the user's password if, for example, the user is |
|
# joining an existing authentication realm. Known authentication realms at |
|
# this time are: |
|
# internal - Purely internal password file (only loncapa knows this user) |
|
# local - Institutionally written authentication module. |
|
# unix - Unix user (/etc/passwd with or without /etc/shadow). |
|
# kerb4 - kerberos version 4 |
|
# kerb5 - kerberos version 5 |
|
# |
|
# Parameters: |
|
# $cmd - The command that got us here. |
|
# $tail - Tail of the command (remaining parameters). |
|
# $client - File descriptor connected to client. |
|
# Returns |
|
# 0 - Requested to exit, caller should shut down. |
|
# 1 - Continue processing. |
|
# Implicit inputs: |
|
# The authentication systems describe above have their own forms of implicit |
|
# input into the authentication process that are described above. |
|
# NOTE: |
|
# This is also used to change the authentication credential values (e.g. passwd). |
|
# |
|
# |
|
sub change_authentication_handler { |
|
|
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; # Reconstruct user input. |
|
|
|
my ($udom,$uname,$umode,$npass)=split(/:/,$tail); |
|
&Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode); |
|
if ($udom ne $currentdomainid) { |
|
&Failure( $client, "not_right_domain\n", $client); |
|
} else { |
|
|
|
chomp($npass); |
|
|
|
$npass=&unescape($npass); |
|
my $oldauth = &get_auth_type($udom, $uname); # Get old auth info. |
|
my $passfilename = &password_path($udom, $uname); |
|
if ($passfilename) { # Not allowed to create a new user!! |
|
# If just changing the unix passwd. need to arrange to run |
|
# passwd since otherwise make_passwd_file will run |
|
# lcuseradd which fails if an account already exists |
|
# (to prevent an unscrupulous LONCAPA admin from stealing |
|
# an existing account by overwriting it as a LonCAPA account). |
|
|
|
if(($oldauth =~/^unix/) && ($umode eq "unix")) { |
|
my $result = &change_unix_password($uname, $npass); |
|
&logthis("Result of password change for $uname: ".$result); |
|
if ($result eq "ok") { |
|
&Reply($client, \$result); |
|
} else { |
|
&Failure($client, \$result); |
|
} |
|
} else { |
|
my $result=&make_passwd_file($uname, $umode,$npass,$passfilename); |
|
# |
|
# If the current auth mode is internal, and the old auth mode was |
|
# unix, or krb*, and the user is an author for this domain, |
|
# re-run manage_permissions for that role in order to be able |
|
# to take ownership of the construction space back to www:www |
|
# |
|
|
|
|
|
if( (($oldauth =~ /^unix/) && ($umode eq "internal")) || |
|
(($oldauth =~ /^internal/) && ($umode eq "unix")) ) { |
|
if(&is_author($udom, $uname)) { |
|
&Debug(" Need to manage author permissions..."); |
|
&manage_permissions("/$udom/_au", $udom, $uname, "$umode:"); |
|
} |
|
} |
|
&Reply($client, \$result, $userinput); |
|
} |
|
|
|
|
|
} else { |
|
&Failure($client, "non_authorized\n", $userinput); # Fail the user now. |
|
} |
|
} |
|
return 1; |
|
} |
|
®ister_handler("changeuserauth", \&change_authentication_handler, 1,1, 0); |
|
|
|
# |
|
# Determines if this is the home server for a user. The home server |
|
# for a user will have his/her lon-capa passwd file. Therefore all we need |
|
# to do is determine if this file exists. |
|
# |
|
# Parameters: |
|
# $cmd - The command that got us here. |
|
# $tail - Tail of the command (remaining parameters). |
|
# $client - File descriptor connected to client. |
|
# Returns |
|
# 0 - Requested to exit, caller should shut down. |
|
# 1 - Continue processing. |
|
# Implicit inputs: |
|
# The authentication systems describe above have their own forms of implicit |
|
# input into the authentication process that are described above. |
|
# |
|
sub is_home_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($udom,$uname)=split(/:/,$tail); |
|
chomp($uname); |
|
my $passfile = &password_filename($udom, $uname); |
|
if($passfile) { |
|
&Reply( $client, "found\n", $userinput); |
|
} else { |
|
&Failure($client, "not_found\n", $userinput); |
|
} |
|
return 1; |
|
} |
|
®ister_handler("home", \&is_home_handler, 0,1,0); |
|
|
|
# |
|
# Process an update request for a resource?? I think what's going on here is |
|
# that a resource has been modified that we hold a subscription to. |
|
# If the resource is not local, then we must update, or at least invalidate our |
|
# cached copy of the resource. |
|
# FUTURE WORK: |
|
# I need to look at this logic carefully. My druthers would be to follow |
|
# typical caching logic, and simple invalidate the cache, drop any subscription |
|
# an let the next fetch start the ball rolling again... however that may |
|
# actually be more difficult than it looks given the complex web of |
|
# proxy servers. |
|
# Parameters: |
|
# $cmd - The command that got us here. |
|
# $tail - Tail of the command (remaining parameters). |
|
# $client - File descriptor connected to client. |
|
# Returns |
|
# 0 - Requested to exit, caller should shut down. |
|
# 1 - Continue processing. |
|
# Implicit inputs: |
|
# The authentication systems describe above have their own forms of implicit |
|
# input into the authentication process that are described above. |
|
# |
|
sub update_resource_handler { |
|
|
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
my $fname= $tail; # This allows interactive testing |
|
|
|
|
|
my $ownership=ishome($fname); |
|
if ($ownership eq 'not_owner') { |
|
if (-e $fname) { |
|
my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size, |
|
$atime,$mtime,$ctime,$blksize,$blocks)=stat($fname); |
|
my $now=time; |
|
my $since=$now-$atime; |
|
if ($since>$perlvar{'lonExpire'}) { |
|
my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname"); |
|
&devalidate_meta_cache($fname); |
|
unlink("$fname"); |
|
unlink("$fname.meta"); |
|
} else { |
|
my $transname="$fname.in.transfer"; |
|
my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname"); |
|
my $response; |
|
alarm(120); |
|
{ |
|
my $ua=new LWP::UserAgent; |
|
my $request=new HTTP::Request('GET',"$remoteurl"); |
|
$response=$ua->request($request,$transname); |
|
} |
|
alarm(0); |
|
if ($response->is_error()) { |
|
unlink($transname); |
|
my $message=$response->status_line; |
|
&logthis("LWP GET: $message for $fname ($remoteurl)"); |
|
} else { |
|
if ($remoteurl!~/\.meta$/) { |
|
alarm(120); |
|
{ |
|
my $ua=new LWP::UserAgent; |
|
my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta'); |
|
my $mresponse=$ua->request($mrequest,$fname.'.meta'); |
|
if ($mresponse->is_error()) { |
|
unlink($fname.'.meta'); |
|
} |
|
} |
|
alarm(0); |
|
} |
|
rename($transname,$fname); |
|
&devalidate_meta_cache($fname); |
|
} |
|
} |
|
&Reply( $client, "ok\n", $userinput); |
|
} else { |
|
&Failure($client, "not_found\n", $userinput); |
|
} |
|
} else { |
|
&Failure($client, "rejected\n", $userinput); |
|
} |
|
return 1; |
|
} |
|
®ister_handler("update", \&update_resource_handler, 0 ,1, 0); |
|
|
|
sub devalidate_meta_cache { |
|
my ($url) = @_; |
|
use Cache::Memcached; |
|
my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']}); |
|
$url = &Apache::lonnet::declutter($url); |
|
$url =~ s-\.meta$--; |
|
my $id = &escape('meta:'.$url); |
|
$memcache->delete($id); |
|
} |
|
|
|
# |
|
# Fetch a user file from a remote server to the user's home directory |
|
# userfiles subdir. |
|
# Parameters: |
|
# $cmd - The command that got us here. |
|
# $tail - Tail of the command (remaining parameters). |
|
# $client - File descriptor connected to client. |
|
# Returns |
|
# 0 - Requested to exit, caller should shut down. |
|
# 1 - Continue processing. |
|
# |
|
sub fetch_user_file_handler { |
|
|
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
my $fname = $tail; |
|
my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|); |
|
my $udir=&propath($udom,$uname).'/userfiles'; |
|
unless (-e $udir) { |
|
mkdir($udir,0770); |
|
} |
|
Debug("fetch user file for $fname"); |
|
if (-e $udir) { |
|
$ufile=~s/^[\.\~]+//; |
|
|
|
# IF necessary, create the path right down to the file. |
|
# Note that any regular files in the way of this path are |
|
# wiped out to deal with some earlier folly of mine. |
|
|
|
if (!&mkpath($udir.'/'.$ufile)) { |
|
&Failure($client, "unable_to_create\n", $userinput); |
|
} |
|
|
|
my $destname=$udir.'/'.$ufile; |
|
my $transname=$udir.'/'.$ufile.'.in.transit'; |
|
my $remoteurl='http://'.$clientip.'/userfiles/'.$fname; |
|
my $response; |
|
Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname"); |
|
alarm(120); |
|
{ |
|
my $ua=new LWP::UserAgent; |
|
my $request=new HTTP::Request('GET',"$remoteurl"); |
|
$response=$ua->request($request,$transname); |
|
} |
|
alarm(0); |
|
if ($response->is_error()) { |
|
unlink($transname); |
|
my $message=$response->status_line; |
|
&logthis("LWP GET: $message for $fname ($remoteurl)"); |
|
&Failure($client, "failed\n", $userinput); |
|
} else { |
|
Debug("Renaming $transname to $destname"); |
|
if (!rename($transname,$destname)) { |
|
&logthis("Unable to move $transname to $destname"); |
|
unlink($transname); |
|
&Failure($client, "failed\n", $userinput); |
|
} else { |
|
&Reply($client, "ok\n", $userinput); |
|
} |
|
} |
|
} else { |
|
&Failure($client, "not_home\n", $userinput); |
|
} |
|
return 1; |
|
} |
|
®ister_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0); |
|
|
|
# |
|
# Remove a file from a user's home directory userfiles subdirectory. |
|
# Parameters: |
|
# cmd - the Lond request keyword that got us here. |
|
# tail - the part of the command past the keyword. |
|
# client- File descriptor connected with the client. |
|
# |
|
# Returns: |
|
# 1 - Continue processing. |
|
sub remove_user_file_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent. |
|
|
|
my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|); |
|
if ($ufile =~m|/\.\./|) { |
|
# any files paths with /../ in them refuse |
|
# to deal with |
|
&Failure($client, "refused\n", "$cmd:$tail"); |
|
} else { |
|
my $udir = &propath($udom,$uname); |
|
if (-e $udir) { |
|
my $file=$udir.'/userfiles/'.$ufile; |
|
if (-e $file) { |
|
# |
|
# If the file is a regular file unlink is fine... |
|
# However it's possible the client wants a dir. |
|
# removed, in which case rmdir is more approprate: |
|
# |
|
if (-f $file){ |
|
unlink($file); |
|
} elsif(-d $file) { |
|
rmdir($file); |
|
} |
|
if (-e $file) { |
|
# File is still there after we deleted it ?!? |
|
|
|
&Failure($client, "failed\n", "$cmd:$tail"); |
|
} else { |
|
&Reply($client, "ok\n", "$cmd:$tail"); |
|
} |
|
} else { |
|
&Failure($client, "not_found\n", "$cmd:$tail"); |
|
} |
|
} else { |
|
&Failure($client, "not_home\n", "$cmd:$tail"); |
|
} |
|
} |
|
return 1; |
|
} |
|
®ister_handler("removeuserfile", \&remove_user_file_handler, 0,1,0); |
|
|
|
# |
|
# make a directory in a user's home directory userfiles subdirectory. |
|
# Parameters: |
|
# cmd - the Lond request keyword that got us here. |
|
# tail - the part of the command past the keyword. |
|
# client- File descriptor connected with the client. |
|
# |
|
# Returns: |
|
# 1 - Continue processing. |
|
sub mkdir_user_file_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent. |
|
$dir=&unescape($dir); |
|
my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|); |
|
if ($ufile =~m|/\.\./|) { |
|
# any files paths with /../ in them refuse |
|
# to deal with |
|
&Failure($client, "refused\n", "$cmd:$tail"); |
|
} else { |
|
my $udir = &propath($udom,$uname); |
|
if (-e $udir) { |
|
my $newdir=$udir.'/userfiles/'.$ufile.'/'; |
|
if (!&mkpath($newdir)) { |
|
&Failure($client, "failed\n", "$cmd:$tail"); |
|
} |
|
&Reply($client, "ok\n", "$cmd:$tail"); |
|
} else { |
|
&Failure($client, "not_home\n", "$cmd:$tail"); |
|
} |
|
} |
|
return 1; |
|
} |
|
®ister_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0); |
|
|
|
# |
|
# rename a file in a user's home directory userfiles subdirectory. |
|
# Parameters: |
|
# cmd - the Lond request keyword that got us here. |
|
# tail - the part of the command past the keyword. |
|
# client- File descriptor connected with the client. |
|
# |
|
# Returns: |
|
# 1 - Continue processing. |
|
sub rename_user_file_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my ($udom,$uname,$old,$new) = split(/:/, $tail); |
|
$old=&unescape($old); |
|
$new=&unescape($new); |
|
if ($new =~m|/\.\./| || $old =~m|/\.\./|) { |
|
# any files paths with /../ in them refuse to deal with |
|
&Failure($client, "refused\n", "$cmd:$tail"); |
|
} else { |
|
my $udir = &propath($udom,$uname); |
|
if (-e $udir) { |
|
my $oldfile=$udir.'/userfiles/'.$old; |
|
my $newfile=$udir.'/userfiles/'.$new; |
|
if (-e $newfile) { |
|
&Failure($client, "exists\n", "$cmd:$tail"); |
|
} elsif (! -e $oldfile) { |
|
&Failure($client, "not_found\n", "$cmd:$tail"); |
|
} else { |
|
if (!rename($oldfile,$newfile)) { |
|
&Failure($client, "failed\n", "$cmd:$tail"); |
|
} else { |
|
&Reply($client, "ok\n", "$cmd:$tail"); |
|
} |
|
} |
|
} else { |
|
&Failure($client, "not_home\n", "$cmd:$tail"); |
|
} |
|
} |
|
return 1; |
|
} |
|
®ister_handler("renameuserfile", \&rename_user_file_handler, 0,1,0); |
|
|
|
# |
|
# Checks if the specified user has an active session on the server |
|
# return ok if so, not_found if not |
|
# |
|
# Parameters: |
|
# cmd - The request keyword that dispatched to tus. |
|
# tail - The tail of the request (colon separated parameters). |
|
# client - Filehandle open on the client. |
|
# Return: |
|
# 1. |
|
sub user_has_session_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail)); |
|
|
|
&logthis("Looking for $udom $uname"); |
|
opendir(DIR,$perlvar{'lonIDsDir'}); |
|
my $filename; |
|
while ($filename=readdir(DIR)) { |
|
last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/); |
|
} |
|
if ($filename) { |
|
&Reply($client, "ok\n", "$cmd:$tail"); |
|
} else { |
|
&Failure($client, "not_found\n", "$cmd:$tail"); |
|
} |
|
return 1; |
|
|
|
} |
|
®ister_handler("userhassession", \&user_has_session_handler, 0,1,0); |
|
|
|
# |
|
# Authenticate access to a user file by checking that the token the user's |
|
# passed also exists in their session file |
|
# |
|
# Parameters: |
|
# cmd - The request keyword that dispatched to tus. |
|
# tail - The tail of the request (colon separated parameters). |
|
# client - Filehandle open on the client. |
|
# Return: |
|
# 1. |
|
sub token_auth_user_file_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my ($fname, $session) = split(/:/, $tail); |
|
|
|
chomp($session); |
|
my $reply="non_auth"; |
|
my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id'; |
|
if (open(ENVIN,"$file")) { |
|
flock(ENVIN,LOCK_SH); |
|
tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640); |
|
if (exists($disk_env{"userfile.$fname"})) { |
|
$reply="ok"; |
|
} else { |
|
foreach my $envname (keys(%disk_env)) { |
|
if ($envname=~ m|^userfile\.\Q$fname\E|) { |
|
$reply="ok"; |
|
last; |
|
} |
|
} |
|
} |
|
untie(%disk_env); |
|
close(ENVIN); |
|
&Reply($client, \$reply, "$cmd:$tail"); |
|
} else { |
|
&Failure($client, "invalid_token\n", "$cmd:$tail"); |
|
} |
|
return 1; |
|
|
|
} |
|
®ister_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0); |
|
|
|
# |
|
# Unsubscribe from a resource. |
|
# |
|
# Parameters: |
|
# $cmd - The command that got us here. |
|
# $tail - Tail of the command (remaining parameters). |
|
# $client - File descriptor connected to client. |
|
# Returns |
|
# 0 - Requested to exit, caller should shut down. |
|
# 1 - Continue processing. |
|
# |
|
sub unsubscribe_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput= "$cmd:$tail"; |
|
|
|
my ($fname) = split(/:/,$tail); # Split in case there's extrs. |
|
|
|
&Debug("Unsubscribing $fname"); |
|
if (-e $fname) { |
|
&Debug("Exists"); |
|
&Reply($client, &unsub($fname,$clientip), $userinput); |
|
} else { |
|
&Failure($client, "not_found\n", $userinput); |
|
} |
|
return 1; |
|
} |
|
®ister_handler("unsub", \&unsubscribe_handler, 0, 1, 0); |
|
|
|
# Subscribe to a resource |
|
# |
|
# Parameters: |
|
# $cmd - The command that got us here. |
|
# $tail - Tail of the command (remaining parameters). |
|
# $client - File descriptor connected to client. |
|
# Returns |
|
# 0 - Requested to exit, caller should shut down. |
|
# 1 - Continue processing. |
|
# |
|
sub subscribe_handler { |
|
my ($cmd, $tail, $client)= @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
&Reply( $client, &subscribe($userinput,$clientip), $userinput); |
|
|
|
return 1; |
|
} |
|
®ister_handler("sub", \&subscribe_handler, 0, 1, 0); |
|
|
|
# |
|
# Determine the latest version of a resource (it looks for the highest |
|
# past version and then returns that +1) |
|
# |
|
# Parameters: |
|
# $cmd - The command that got us here. |
|
# $tail - Tail of the command (remaining parameters). |
|
# (Should consist of an absolute path to a file) |
|
# $client - File descriptor connected to client. |
|
# Returns |
|
# 0 - Requested to exit, caller should shut down. |
|
# 1 - Continue processing. |
|
# |
|
sub current_version_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput= "$cmd:$tail"; |
|
|
|
my $fname = $tail; |
|
&Reply( $client, ¤tversion($fname)."\n", $userinput); |
|
return 1; |
|
|
|
} |
|
®ister_handler("currentversion", \¤t_version_handler, 0, 1, 0); |
|
|
|
# Make an entry in a user's activity log. |
|
# |
|
# Parameters: |
|
# $cmd - The command that got us here. |
|
# $tail - Tail of the command (remaining parameters). |
|
# $client - File descriptor connected to client. |
|
# Returns |
|
# 0 - Requested to exit, caller should shut down. |
|
# 1 - Continue processing. |
|
# |
|
sub activity_log_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
|
|
my $userinput= "$cmd:$tail"; |
|
|
|
my ($udom,$uname,$what)=split(/:/,$tail); |
|
chomp($what); |
|
my $proname=&propath($udom,$uname); |
|
my $now=time; |
|
my $hfh; |
|
if ($hfh=IO::File->new(">>$proname/activity.log")) { |
|
print $hfh "$now:$clientname:$what\n"; |
|
&Reply( $client, "ok\n", $userinput); |
|
} else { |
|
&Failure($client, "error: ".($!+0)." IO::File->new Failed " |
|
."while attempting log\n", |
|
$userinput); |
|
} |
|
|
|
return 1; |
|
} |
|
®ister_handler("log", \&activity_log_handler, 0, 1, 0); |
|
|
|
# |
|
# Put a namespace entry in a user profile hash. |
|
# My druthers would be for this to be an encrypted interaction too. |
|
# anything that might be an inadvertent covert channel about either |
|
# user authentication or user personal information.... |
|
# |
|
# Parameters: |
|
# $cmd - The command that got us here. |
|
# $tail - Tail of the command (remaining parameters). |
|
# $client - File descriptor connected to client. |
|
# Returns |
|
# 0 - Requested to exit, caller should shut down. |
|
# 1 - Continue processing. |
|
# |
|
sub put_user_profile_entry { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4); |
|
if ($namespace ne 'roles') { |
|
chomp($what); |
|
my $hashref = &tie_user_hash($udom, $uname, $namespace, |
|
&GDBM_WRCREAT(),"P",$what); |
|
if($hashref) { |
|
my @pairs=split(/\&/,$what); |
|
foreach my $pair (@pairs) { |
|
my ($key,$value)=split(/=/,$pair); |
|
$hashref->{$key}=$value; |
|
} |
|
if (&untie_user_hash($hashref)) { |
|
&Reply( $client, "ok\n", $userinput); |
|
} else { |
|
&Failure($client, "error: ".($!+0)." untie(GDBM) failed ". |
|
"while attempting put\n", |
|
$userinput); |
|
} |
|
} else { |
|
&Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". |
|
"while attempting put\n", $userinput); |
|
} |
|
} else { |
|
&Failure( $client, "refused\n", $userinput); |
|
} |
|
|
|
return 1; |
|
} |
|
®ister_handler("put", \&put_user_profile_entry, 0, 1, 0); |
|
|
|
# Put a piece of new data in hash, returns error if entry already exists |
|
# Parameters: |
|
# $cmd - The command that got us here. |
|
# $tail - Tail of the command (remaining parameters). |
|
# $client - File descriptor connected to client. |
|
# Returns |
|
# 0 - Requested to exit, caller should shut down. |
|
# 1 - Continue processing. |
|
# |
|
sub newput_user_profile_entry { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4); |
|
if ($namespace eq 'roles') { |
|
&Failure( $client, "refused\n", $userinput); |
|
return 1; |
|
} |
|
|
|
chomp($what); |
|
|
|
my $hashref = &tie_user_hash($udom, $uname, $namespace, |
|
&GDBM_WRCREAT(),"N",$what); |
|
if(!$hashref) { |
|
&Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". |
|
"while attempting put\n", $userinput); |
|
return 1; |
|
} |
|
|
|
my @pairs=split(/\&/,$what); |
|
foreach my $pair (@pairs) { |
|
my ($key,$value)=split(/=/,$pair); |
|
if (exists($hashref->{$key})) { |
|
&Failure($client, "key_exists: ".$key."\n",$userinput); |
|
return 1; |
|
} |
|
} |
|
|
|
foreach my $pair (@pairs) { |
|
my ($key,$value)=split(/=/,$pair); |
|
$hashref->{$key}=$value; |
|
} |
|
|
|
if (&untie_user_hash($hashref)) { |
|
&Reply( $client, "ok\n", $userinput); |
|
} else { |
|
&Failure($client, "error: ".($!+0)." untie(GDBM) failed ". |
|
"while attempting put\n", |
|
$userinput); |
|
} |
|
return 1; |
|
} |
|
®ister_handler("newput", \&newput_user_profile_entry, 0, 1, 0); |
|
|
|
# |
|
# Increment a profile entry in the user history file. |
|
# The history contains keyword value pairs. In this case, |
|
# The value itself is a pair of numbers. The first, the current value |
|
# the second an increment that this function applies to the current |
|
# value. |
|
# |
|
# Parameters: |
|
# $cmd - The command that got us here. |
|
# $tail - Tail of the command (remaining parameters). |
|
# $client - File descriptor connected to client. |
|
# Returns |
|
# 0 - Requested to exit, caller should shut down. |
|
# 1 - Continue processing. |
|
# |
|
sub increment_user_value_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($udom,$uname,$namespace,$what) =split(/:/,$tail); |
|
if ($namespace ne 'roles') { |
|
chomp($what); |
|
my $hashref = &tie_user_hash($udom, $uname, |
|
$namespace, &GDBM_WRCREAT(), |
|
"P",$what); |
|
if ($hashref) { |
|
my @pairs=split(/\&/,$what); |
|
foreach my $pair (@pairs) { |
|
my ($key,$value)=split(/=/,$pair); |
|
$value = &unescape($value); |
|
# We could check that we have a number... |
|
if (! defined($value) || $value eq '') { |
|
$value = 1; |
|
} |
|
$hashref->{$key}+=$value; |
|
if ($namespace eq 'nohist_resourcetracker') { |
|
if ($hashref->{$key} < 0) { |
|
$hashref->{$key} = 0; |
|
} |
|
} |
|
} |
|
if (&untie_user_hash($hashref)) { |
|
&Reply( $client, "ok\n", $userinput); |
|
} else { |
|
&Failure($client, "error: ".($!+0)." untie(GDBM) failed ". |
|
"while attempting inc\n", $userinput); |
|
} |
|
} else { |
|
&Failure($client, "error: ".($!+0)." tie(GDBM) Failed ". |
|
"while attempting inc\n", $userinput); |
|
} |
|
} else { |
|
&Failure($client, "refused\n", $userinput); |
|
} |
|
|
|
return 1; |
|
} |
|
®ister_handler("inc", \&increment_user_value_handler, 0, 1, 0); |
|
|
|
# |
|
# Put a new role for a user. Roles are LonCAPA's packaging of permissions. |
|
# Each 'role' a user has implies a set of permissions. Adding a new role |
|
# for a person grants the permissions packaged with that role |
|
# to that user when the role is selected. |
|
# |
|
# Parameters: |
|
# $cmd - The command string (rolesput). |
|
# $tail - The remainder of the request line. For rolesput this |
|
# consists of a colon separated list that contains: |
|
# The domain and user that is granting the role (logged). |
|
# The domain and user that is getting the role. |
|
# The roles being granted as a set of & separated pairs. |
|
# each pair a key value pair. |
|
# $client - File descriptor connected to the client. |
|
# Returns: |
|
# 0 - If the daemon should exit |
|
# 1 - To continue processing. |
|
# |
|
# |
|
sub roles_put_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail); |
|
|
|
|
|
my $namespace='roles'; |
|
chomp($what); |
|
my $hashref = &tie_user_hash($udom, $uname, $namespace, |
|
&GDBM_WRCREAT(), "P", |
|
"$exedom:$exeuser:$what"); |
|
# |
|
# Log the attempt to set a role. The {}'s here ensure that the file |
|
# handle is open for the minimal amount of time. Since the flush |
|
# is done on close this improves the chances the log will be an un- |
|
# corrupted ordered thing. |
|
if ($hashref) { |
|
my $pass_entry = &get_auth_type($udom, $uname); |
|
my ($auth_type,$pwd) = split(/:/, $pass_entry); |
|
$auth_type = $auth_type.":"; |
|
my @pairs=split(/\&/,$what); |
|
foreach my $pair (@pairs) { |
|
my ($key,$value)=split(/=/,$pair); |
|
&manage_permissions($key, $udom, $uname, |
|
$auth_type); |
|
$hashref->{$key}=$value; |
|
} |
|
if (&untie_user_hash($hashref)) { |
|
&Reply($client, "ok\n", $userinput); |
|
} else { |
|
&Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ". |
|
"while attempting rolesput\n", $userinput); |
|
} |
|
} else { |
|
&Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". |
|
"while attempting rolesput\n", $userinput); |
|
} |
|
return 1; |
|
} |
|
®ister_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only. |
|
|
|
# |
|
# Deletes (removes) a role for a user. This is equivalent to removing |
|
# a permissions package associated with the role from the user's profile. |
|
# |
|
# Parameters: |
|
# $cmd - The command (rolesdel) |
|
# $tail - The remainder of the request line. This consists |
|
# of: |
|
# The domain and user requesting the change (logged) |
|
# The domain and user being changed. |
|
# The roles being revoked. These are shipped to us |
|
# as a bunch of & separated role name keywords. |
|
# $client - The file handle open on the client. |
|
# Returns: |
|
# 1 - Continue processing |
|
# 0 - Exit. |
|
# |
|
sub roles_delete_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail); |
|
&Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom. |
|
"what = ".$what); |
|
my $namespace='roles'; |
|
chomp($what); |
|
my $hashref = &tie_user_hash($udom, $uname, $namespace, |
|
&GDBM_WRCREAT(), "D", |
|
"$exedom:$exeuser:$what"); |
|
|
|
if ($hashref) { |
|
my @rolekeys=split(/\&/,$what); |
|
|
|
foreach my $key (@rolekeys) { |
|
delete $hashref->{$key}; |
|
} |
|
if (&untie_user_hash($hashref)) { |
|
&Reply($client, "ok\n", $userinput); |
|
} else { |
|
&Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ". |
|
"while attempting rolesdel\n", $userinput); |
|
} |
|
} else { |
|
&Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". |
|
"while attempting rolesdel\n", $userinput); |
|
} |
|
|
|
return 1; |
|
} |
|
®ister_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only |
|
|
|
# Unencrypted get from a user's profile database. See |
|
# GetProfileEntryEncrypted for a version that does end-to-end encryption. |
|
# This function retrieves a keyed item from a specific named database in the |
|
# user's directory. |
|
# |
|
# Parameters: |
|
# $cmd - Command request keyword (get). |
|
# $tail - Tail of the command. This is a colon separated list |
|
# consisting of the domain and username that uniquely |
|
# identifies the profile, |
|
# The 'namespace' which selects the gdbm file to |
|
# do the lookup in, |
|
# & separated list of keys to lookup. Note that |
|
# the values are returned as an & separated list too. |
|
# $client - File descriptor open on the client. |
|
# Returns: |
|
# 1 - Continue processing. |
|
# 0 - Exit. |
|
# |
|
sub get_profile_entry { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput= "$cmd:$tail"; |
|
|
|
my ($udom,$uname,$namespace,$what) = split(/:/,$tail); |
|
chomp($what); |
|
|
|
|
|
my $replystring = read_profile($udom, $uname, $namespace, $what); |
|
my ($first) = split(/:/,$replystring); |
|
if($first ne "error") { |
|
&Reply($client, \$replystring, $userinput); |
|
} else { |
|
&Failure($client, $replystring." while attempting get\n", $userinput); |
|
} |
|
return 1; |
|
|
|
|
|
} |
|
®ister_handler("get", \&get_profile_entry, 0,1,0); |
|
|
|
# |
|
# Process the encrypted get request. Note that the request is sent |
|
# in clear, but the reply is encrypted. This is a small covert channel: |
|
# information about the sensitive keys is given to the snooper. Just not |
|
# information about the values of the sensitive key. Hmm if I wanted to |
|
# know these I'd snoop for the egets. Get the profile item names from them |
|
# and then issue a get for them since there's no enforcement of the |
|
# requirement of an encrypted get for particular profile items. If I |
|
# were re-doing this, I'd force the request to be encrypted as well as the |
|
# reply. I'd also just enforce encrypted transactions for all gets since |
|
# that would prevent any covert channel snooping. |
|
# |
|
# Parameters: |
|
# $cmd - Command keyword of request (eget). |
|
# $tail - Tail of the command. See GetProfileEntry
# for more information about this. |
|
# $client - File open on the client. |
|
# Returns: |
|
# 1 - Continue processing |
|
# 0 - server should exit. |
|
sub get_profile_entry_encrypted { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($udom,$uname,$namespace,$what) = split(/:/,$tail); |
|
chomp($what); |
|
my $qresult = read_profile($udom, $uname, $namespace, $what); |
|
my ($first) = split(/:/, $qresult); |
|
if($first ne "error") { |
|
|
|
if ($cipher) { |
|
my $cmdlength=length($qresult); |
|
$qresult.=" "; |
|
my $encqresult=''; |
|
for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) { |
|
$encqresult.= unpack("H16", |
|
$cipher->encrypt(substr($qresult, |
|
$encidx, |
|
8))); |
|
} |
|
&Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput); |
|
} else { |
|
&Failure( $client, "error:no_key\n", $userinput); |
|
} |
|
} else { |
|
&Failure($client, "$qresult while attempting eget\n", $userinput); |
|
|
|
} |
|
|
|
return 1; |
|
} |
|
®ister_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0); |
|
|
|
# |
|
# Deletes a key in a user profile database. |
|
# |
|
# Parameters: |
|
# $cmd - Command keyword (del). |
|
# $tail - Command tail. IN this case a colon |
|
# separated list containing: |
|
# The domain and user that identifies uniquely |
|
# the identity of the user. |
|
# The profile namespace (name of the profile |
|
# database file). |
|
# & separated list of keywords to delete. |
|
# $client - File open on client socket. |
|
# Returns: |
|
# 1 - Continue processing |
|
# 0 - Exit server. |
|
# |
|
# |
|
sub delete_profile_entry { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "cmd:$tail"; |
|
|
|
my ($udom,$uname,$namespace,$what) = split(/:/,$tail); |
|
chomp($what); |
|
my $hashref = &tie_user_hash($udom, $uname, $namespace, |
|
&GDBM_WRCREAT(), |
|
"D",$what); |
|
if ($hashref) { |
|
my @keys=split(/\&/,$what); |
|
foreach my $key (@keys) { |
|
delete($hashref->{$key}); |
|
} |
|
if (&untie_user_hash($hashref)) { |
|
&Reply($client, "ok\n", $userinput); |
|
} else { |
|
&Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". |
|
"while attempting del\n", $userinput); |
|
} |
|
} else { |
|
&Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". |
|
"while attempting del\n", $userinput); |
|
} |
|
return 1; |
|
} |
|
®ister_handler("del", \&delete_profile_entry, 0, 1, 0); |
|
|
|
# |
|
# List the set of keys that are defined in a profile database file. |
|
# A successful reply from this will contain an & separated list of |
|
# the keys. |
|
# Parameters: |
|
# $cmd - Command request (keys). |
|
# $tail - Remainder of the request, a colon separated |
|
# list containing domain/user that identifies the |
|
# user being queried, and the database namespace |
|
# (database filename essentially). |
|
# $client - File open on the client. |
|
# Returns: |
|
# 1 - Continue processing. |
|
# 0 - Exit the server. |
|
# |
|
sub get_profile_keys { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($udom,$uname,$namespace)=split(/:/,$tail); |
|
my $qresult=''; |
|
my $hashref = &tie_user_hash($udom, $uname, $namespace, |
|
&GDBM_READER()); |
|
if ($hashref) { |
|
foreach my $key (keys %$hashref) { |
|
$qresult.="$key&"; |
|
} |
|
if (&untie_user_hash($hashref)) { |
|
$qresult=~s/\&$//; |
|
&Reply($client, \$qresult, $userinput); |
|
} else { |
|
&Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". |
|
"while attempting keys\n", $userinput); |
|
} |
|
} else { |
|
&Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". |
|
"while attempting keys\n", $userinput); |
|
} |
|
|
|
return 1; |
|
} |
|
®ister_handler("keys", \&get_profile_keys, 0, 1, 0); |
|
|
|
# |
|
# Dump the contents of a user profile database. |
|
# Note that this constitutes a very large covert channel too since |
|
# the dump will return sensitive information that is not encrypted. |
|
# The naive security assumption is that the session negotiation ensures |
|
# our client is trusted and I don't believe that's assured at present. |
|
# Sure want badly to go to ssl or tls. Of course if my peer isn't really |
|
# a LonCAPA node they could have negotiated an encryption key too so >sigh<. |
|
# |
|
# Parameters: |
|
# $cmd - The command request keyword (currentdump). |
|
# $tail - Remainder of the request, consisting of a colon |
|
# separated list that has the domain/username and |
|
# the namespace to dump (database file). |
|
# $client - file open on the remote client. |
|
# Returns: |
|
# 1 - Continue processing. |
|
# 0 - Exit the server. |
|
# |
|
sub dump_profile_database { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($udom,$uname,$namespace) = split(/:/,$tail); |
|
my $hashref = &tie_user_hash($udom, $uname, $namespace, |
|
&GDBM_READER()); |
|
if ($hashref) { |
|
# Structure of %data: |
|
# $data{$symb}->{$parameter}=$value; |
|
# $data{$symb}->{'v.'.$parameter}=$version; |
|
# since $parameter will be unescaped, we do not |
|
# have to worry about silly parameter names... |
|
|
|
my $qresult=''; |
|
my %data = (); # A hash of anonymous hashes.. |
|
while (my ($key,$value) = each(%$hashref)) { |
|
my ($v,$symb,$param) = split(/:/,$key); |
|
next if ($v eq 'version' || $symb eq 'keys'); |
|
next if (exists($data{$symb}) && |
|
exists($data{$symb}->{$param}) && |
|
$data{$symb}->{'v.'.$param} > $v); |
|
$data{$symb}->{$param}=$value; |
|
$data{$symb}->{'v.'.$param}=$v; |
|
} |
|
if (&untie_user_hash($hashref)) { |
|
while (my ($symb,$param_hash) = each(%data)) { |
|
while(my ($param,$value) = each (%$param_hash)){ |
|
next if ($param =~ /^v\./); # Ignore versions... |
|
# |
|
# Just dump the symb=value pairs separated by & |
|
# |
|
$qresult.=$symb.':'.$param.'='.$value.'&'; |
|
} |
|
} |
|
chop($qresult); |
|
&Reply($client , \$qresult, $userinput); |
|
} else { |
|
&Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ". |
|
"while attempting currentdump\n", $userinput); |
|
} |
|
} else { |
|
&Failure($client, "error: ".($!+0)." tie(GDBM) Failed ". |
|
"while attempting currentdump\n", $userinput); |
|
} |
|
|
|
return 1; |
|
} |
|
®ister_handler("currentdump", \&dump_profile_database, 0, 1, 0); |
|
|
|
# |
|
# Dump a profile database with an optional regular expression |
|
# to match against the keys. In this dump, no effort is made |
|
# to separate symb from version information. Presumably the |
|
# databases that are dumped by this command are of a different |
|
# structure. Need to look at this and improve the documentation of |
|
# both this and the currentdump handler. |
|
# Parameters: |
|
# $cmd - The command keyword. |
|
# $tail - All of the characters after the $cmd: |
|
# These are expected to be a colon |
|
# separated list containing: |
|
# domain/user - identifying the user. |
|
# namespace - identifying the database. |
|
# regexp - optional regular expression |
|
# that is matched against |
|
# database keywords to do |
|
# selective dumps. |
|
# $client - Channel open on the client. |
|
# Returns: |
|
# 1 - Continue processing. |
|
# Side effects: |
|
# response is written to $client. |
|
# |
|
sub dump_with_regexp { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($udom,$uname,$namespace,$regexp,$range)=split(/:/,$tail); |
|
if (defined($regexp)) { |
|
$regexp=&unescape($regexp); |
|
} else { |
|
$regexp='.'; |
|
} |
|
my ($start,$end); |
|
if (defined($range)) { |
|
if ($range =~/^(\d+)\-(\d+)$/) { |
|
($start,$end) = ($1,$2); |
|
} elsif ($range =~/^(\d+)$/) { |
|
($start,$end) = (0,$1); |
|
} else { |
|
undef($range); |
|
} |
|
} |
|
my $hashref = &tie_user_hash($udom, $uname, $namespace, |
|
&GDBM_READER()); |
|
if ($hashref) { |
|
my $qresult=''; |
|
my $count=0; |
|
while (my ($key,$value) = each(%$hashref)) { |
|
if ($regexp eq '.') { |
|
$count++; |
|
if (defined($range) && $count >= $end) { last; } |
|
if (defined($range) && $count < $start) { next; } |
|
$qresult.=$key.'='.$value.'&'; |
|
} else { |
|
my $unescapeKey = &unescape($key); |
|
if (eval('$unescapeKey=~/$regexp/')) { |
|
$count++; |
|
if (defined($range) && $count >= $end) { last; } |
|
if (defined($range) && $count < $start) { next; } |
|
$qresult.="$key=$value&"; |
|
} |
|
} |
|
} |
|
if (&untie_user_hash($hashref)) { |
|
chop($qresult); |
|
&Reply($client, \$qresult, $userinput); |
|
} else { |
|
&Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ". |
|
"while attempting dump\n", $userinput); |
|
} |
|
} else { |
|
&Failure($client, "error: ".($!+0)." tie(GDBM) Failed ". |
|
"while attempting dump\n", $userinput); |
|
} |
|
|
|
return 1; |
|
} |
|
®ister_handler("dump", \&dump_with_regexp, 0, 1, 0); |
|
|
|
# Store a set of key=value pairs associated with a versioned name. |
|
# |
|
# Parameters: |
|
# $cmd - Request command keyword. |
|
# $tail - Tail of the request. This is a colon |
|
# separated list containing: |
|
# domain/user - User and authentication domain. |
|
# namespace - Name of the database being modified |
|
# rid - Resource keyword to modify. |
|
# what - new value associated with rid. |
|
# |
|
# $client - Socket open on the client. |
|
# |
|
# |
|
# Returns: |
|
# 1 (keep on processing). |
|
# Side-Effects: |
|
# Writes to the client |
|
sub store_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($udom,$uname,$namespace,$rid,$what) =split(/:/,$tail); |
|
if ($namespace ne 'roles') { |
|
|
|
chomp($what); |
|
my @pairs=split(/\&/,$what); |
|
my $hashref = &tie_user_hash($udom, $uname, $namespace, |
|
&GDBM_WRCREAT(), "S", |
|
"$rid:$what"); |
|
if ($hashref) { |
|
my $now = time; |
|
my @previouskeys=split(/&/,$hashref->{"keys:$rid"}); |
|
my $key; |
|
$hashref->{"version:$rid"}++; |
|
my $version=$hashref->{"version:$rid"}; |
|
my $allkeys=''; |
|
foreach my $pair (@pairs) { |
|
my ($key,$value)=split(/=/,$pair); |
|
$allkeys.=$key.':'; |
|
$hashref->{"$version:$rid:$key"}=$value; |
|
} |
|
$hashref->{"$version:$rid:timestamp"}=$now; |
|
$allkeys.='timestamp'; |
|
$hashref->{"$version:keys:$rid"}=$allkeys; |
|
if (&untie_user_hash($hashref)) { |
|
&Reply($client, "ok\n", $userinput); |
|
} else { |
|
&Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". |
|
"while attempting store\n", $userinput); |
|
} |
|
} else { |
|
&Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". |
|
"while attempting store\n", $userinput); |
|
} |
|
} else { |
|
&Failure($client, "refused\n", $userinput); |
|
} |
|
|
|
return 1; |
|
} |
|
®ister_handler("store", \&store_handler, 0, 1, 0); |
|
|
|
# Modify a set of key=value pairs associated with a versioned name. |
|
# |
|
# Parameters: |
|
# $cmd - Request command keyword. |
|
# $tail - Tail of the request. This is a colon |
|
# separated list containing: |
|
# domain/user - User and authentication domain. |
|
# namespace - Name of the database being modified |
|
# rid - Resource keyword to modify. |
|
# v - Version item to modify |
|
# what - new value associated with rid. |
|
# |
|
# $client - Socket open on the client. |
|
# |
|
# |
|
# Returns: |
|
# 1 (keep on processing). |
|
# Side-Effects: |
|
# Writes to the client |
|
sub putstore_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail); |
|
if ($namespace ne 'roles') { |
|
|
|
chomp($what); |
|
my $hashref = &tie_user_hash($udom, $uname, $namespace, |
|
&GDBM_WRCREAT(), "M", |
|
"$rid:$v:$what"); |
|
if ($hashref) { |
|
my $now = time; |
|
my %data = &hash_extract($what); |
|
my @allkeys; |
|
while (my($key,$value) = each(%data)) { |
|
push(@allkeys,$key); |
|
$hashref->{"$v:$rid:$key"} = $value; |
|
} |
|
my $allkeys = join(':',@allkeys); |
|
$hashref->{"$v:keys:$rid"}=$allkeys; |
|
|
|
if (&untie_user_hash($hashref)) { |
|
&Reply($client, "ok\n", $userinput); |
|
} else { |
|
&Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". |
|
"while attempting store\n", $userinput); |
|
} |
|
} else { |
|
&Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". |
|
"while attempting store\n", $userinput); |
|
} |
|
} else { |
|
&Failure($client, "refused\n", $userinput); |
|
} |
|
|
|
return 1; |
|
} |
|
®ister_handler("putstore", \&putstore_handler, 0, 1, 0); |
|
|
|
sub hash_extract { |
|
my ($str)=@_; |
|
my %hash; |
|
foreach my $pair (split(/\&/,$str)) { |
|
my ($key,$value)=split(/=/,$pair); |
|
$hash{$key}=$value; |
|
} |
|
return (%hash); |
|
} |
|
sub hash_to_str { |
|
my ($hash_ref)=@_; |
|
my $str; |
|
foreach my $key (keys(%$hash_ref)) { |
|
$str.=$key.'='.$hash_ref->{$key}.'&'; |
|
} |
|
$str=~s/\&$//; |
|
return $str; |
|
} |
|
|
|
# |
|
# Dump out all versions of a resource that has key=value pairs associated |
|
# with it for each version. These resources are built up via the store |
|
# command. |
|
# |
|
# Parameters: |
|
# $cmd - Command keyword. |
|
# $tail - Remainder of the request which consists of: |
|
# domain/user - User and auth. domain. |
|
# namespace - name of resource database. |
|
# rid - Resource id. |
|
# $client - socket open on the client. |
|
# |
|
# Returns: |
|
# 1 indicating the caller should not yet exit. |
|
# Side-effects: |
|
# Writes a reply to the client. |
|
# The reply is a string of the following shape: |
|
# version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2... |
|
# Where the 1 above represents version 1. |
|
# this continues for all pairs of keys in all versions. |
|
# |
|
# |
|
# |
|
# |
|
sub restore_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; # Only used for logging purposes. |
|
my ($udom,$uname,$namespace,$rid) = split(/:/,$tail); |
|
$namespace=~s/\//\_/g; |
|
$namespace = &LONCAPA::clean_username($namespace); |
|
|
|
chomp($rid); |
|
my $qresult=''; |
|
my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER()); |
|
if ($hashref) { |
|
my $version=$hashref->{"version:$rid"}; |
|
$qresult.="version=$version&"; |
|
my $scope; |
|
for ($scope=1;$scope<=$version;$scope++) { |
|
my $vkeys=$hashref->{"$scope:keys:$rid"}; |
|
my @keys=split(/:/,$vkeys); |
|
my $key; |
|
$qresult.="$scope:keys=$vkeys&"; |
|
foreach $key (@keys) { |
|
$qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&"; |
|
} |
|
} |
|
if (&untie_user_hash($hashref)) { |
|
$qresult=~s/\&$//; |
|
&Reply( $client, \$qresult, $userinput); |
|
} else { |
|
&Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". |
|
"while attempting restore\n", $userinput); |
|
} |
|
} else { |
|
&Failure($client, "error: ".($!+0)." tie(GDBM) Failed ". |
|
"while attempting restore\n", $userinput); |
|
} |
|
|
|
return 1; |
|
|
|
|
|
} |
|
®ister_handler("restore", \&restore_handler, 0,1,0); |
|
|
|
# |
|
# Add a chat message to a synchronous discussion board. |
|
# |
|
# Parameters: |
|
# $cmd - Request keyword. |
|
# $tail - Tail of the command. A colon separated list |
|
# containing: |
|
# cdom - Domain on which the chat board lives |
|
# cnum - Course containing the chat board. |
|
# newpost - Body of the posting. |
|
# group - Optional group, if chat board is only |
|
# accessible in a group within the course |
|
# $client - Socket open on the client. |
|
# Returns: |
|
# 1 - Indicating caller should keep on processing. |
|
# |
|
# Side-effects: |
|
# writes a reply to the client. |
|
# |
|
# |
|
sub send_chat_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail); |
|
&chat_add($cdom,$cnum,$newpost,$group); |
|
&Reply($client, "ok\n", $userinput); |
|
|
|
return 1; |
|
} |
|
®ister_handler("chatsend", \&send_chat_handler, 0, 1, 0); |
|
|
|
# |
|
# Retrieve the set of chat messages from a discussion board. |
|
# |
|
# Parameters: |
|
# $cmd - Command keyword that initiated the request. |
|
# $tail - Remainder of the request after the command |
|
# keyword. In this case a colon separated list of |
|
# chat domain - Which discussion board. |
|
# chat id - Discussion thread(?) |
|
# domain/user - Authentication domain and username |
|
# of the requesting person. |
|
# group - Optional course group containing |
|
# the board. |
|
# $client - Socket open on the client program. |
|
# Returns: |
|
# 1 - continue processing |
|
# Side effects: |
|
# Response is written to the client. |
|
# |
|
sub retrieve_chat_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail); |
|
my $reply=''; |
|
foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) { |
|
$reply.=&escape($_).':'; |
|
} |
|
$reply=~s/\:$//; |
|
&Reply($client, \$reply, $userinput); |
|
|
|
|
|
return 1; |
|
} |
|
®ister_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0); |
|
|
|
# |
|
# Initiate a query of an sql database. SQL query repsonses get put in |
|
# a file for later retrieval. This prevents sql query results from |
|
# bottlenecking the system. Note that with loncnew, perhaps this is |
|
# less of an issue since multiple outstanding requests can be concurrently |
|
# serviced. |
|
# |
|
# Parameters: |
|
# $cmd - COmmand keyword that initiated the request. |
|
# $tail - Remainder of the command after the keyword. |
|
# For this function, this consists of a query and |
|
# 3 arguments that are self-documentingly labelled |
|
# in the original arg1, arg2, arg3. |
|
# $client - Socket open on the client. |
|
# Return: |
|
# 1 - Indicating processing should continue. |
|
# Side-effects: |
|
# a reply is written to $client. |
|
# |
|
sub send_query_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail); |
|
$query=~s/\n*$//g; |
|
&Reply($client, "". &sql_reply("$clientname\&$query". |
|
"\&$arg1"."\&$arg2"."\&$arg3")."\n", |
|
$userinput); |
|
|
|
return 1; |
|
} |
|
®ister_handler("querysend", \&send_query_handler, 0, 1, 0); |
|
|
|
# |
|
# Add a reply to an sql query. SQL queries are done asyncrhonously. |
|
# The query is submitted via a "querysend" transaction. |
|
# There it is passed on to the lonsql daemon, queued and issued to |
|
# mysql. |
|
# This transaction is invoked when the sql transaction is complete |
|
# it stores the query results in flie and indicates query completion. |
|
# presumably local software then fetches this response... I'm guessing |
|
# the sequence is: lonc does a querysend, we ask lonsql to do it. |
|
# lonsql on completion of the query interacts with the lond of our |
|
# client to do a query reply storing two files: |
|
# - id - The results of the query. |
|
# - id.end - Indicating the transaction completed. |
|
# NOTE: id is a unique id assigned to the query and querysend time. |
|
# Parameters: |
|
# $cmd - Command keyword that initiated this request. |
|
# $tail - Remainder of the tail. In this case that's a colon |
|
# separated list containing the query Id and the |
|
# results of the query. |
|
# $client - Socket open on the client. |
|
# Return: |
|
# 1 - Indicating that we should continue processing. |
|
# Side effects: |
|
# ok written to the client. |
|
# |
|
sub reply_query_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($id,$reply)=split(/:/,$tail); |
|
my $store; |
|
my $execdir=$perlvar{'lonDaemons'}; |
|
if ($store=IO::File->new(">$execdir/tmp/$id")) { |
|
$reply=~s/\&/\n/g; |
|
print $store $reply; |
|
close $store; |
|
my $store2=IO::File->new(">$execdir/tmp/$id.end"); |
|
print $store2 "done\n"; |
|
close $store2; |
|
&Reply($client, "ok\n", $userinput); |
|
} else { |
|
&Failure($client, "error: ".($!+0) |
|
." IO::File->new Failed ". |
|
"while attempting queryreply\n", $userinput); |
|
} |
|
|
|
|
|
return 1; |
|
} |
|
®ister_handler("queryreply", \&reply_query_handler, 0, 1, 0); |
|
|
|
# |
|
# Process the courseidput request. Not quite sure what this means |
|
# at the system level sense. It appears a gdbm file in the |
|
# /home/httpd/lonUsers/$domain/nohist_courseids is tied and |
|
# a set of entries made in that database. |
|
# |
|
# Parameters: |
|
# $cmd - The command keyword that initiated this request. |
|
# $tail - Tail of the command. In this case consists of a colon |
|
# separated list contaning the domain to apply this to and |
|
# an ampersand separated list of keyword=value pairs. |
|
# Each value is a colon separated list that includes: |
|
# description, institutional code and course owner. |
|
# For backward compatibility with versions included |
|
# in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional |
|
# code and/or course owner are preserved from the existing |
|
# record when writing a new record in response to 1.1 or |
|
# 1.2 implementations of lonnet::flushcourselogs(). |
|
# |
|
# $client - Socket open on the client. |
|
# Returns: |
|
# 1 - indicating that processing should continue |
|
# |
|
# Side effects: |
|
# reply is written to the client. |
|
# |
|
sub put_course_id_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($udom, $what) = split(/:/, $tail,2); |
|
chomp($what); |
|
my $now=time; |
|
my @pairs=split(/\&/,$what); |
|
|
|
my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT()); |
|
if ($hashref) { |
|
foreach my $pair (@pairs) { |
|
my ($key,$courseinfo) = split(/=/,$pair,2); |
|
$courseinfo =~ s/=/:/g; |
|
if (defined($hashref->{$key})) { |
|
my $value = &Apache::lonnet::thaw_unescape($hashref->{$key}); |
|
if (ref($value) eq 'HASH') { |
|
my @items = ('description','inst_code','owner','type'); |
|
my @new_items = split(/:/,$courseinfo,-1); |
|
my %storehash; |
|
for (my $i=0; $i<@new_items; $i++) { |
|
$storehash{$items[$i]} = &unescape($new_items[$i]); |
|
} |
|
$hashref->{$key} = |
|
&Apache::lonnet::freeze_escape(\%storehash); |
|
my $unesc_key = &unescape($key); |
|
$hashref->{&escape('lasttime:'.$unesc_key)} = $now; |
|
next; |
|
} |
|
} |
|
my @current_items = split(/:/,$hashref->{$key},-1); |
|
shift(@current_items); # remove description |
|
pop(@current_items); # remove last access |
|
my $numcurrent = scalar(@current_items); |
|
if ($numcurrent > 3) { |
|
$numcurrent = 3; |
|
} |
|
my @new_items = split(/:/,$courseinfo,-1); |
|
my $numnew = scalar(@new_items); |
|
if ($numcurrent > 0) { |
|
if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2 |
|
for (my $j=$numcurrent-$numnew; $j>=0; $j--) { |
|
$courseinfo .= ':'.$current_items[$numcurrent-$j-1]; |
|
} |
|
} |
|
} |
|
$hashref->{$key}=$courseinfo.':'.$now; |
|
} |
|
if (&untie_domain_hash($hashref)) { |
|
&Reply( $client, "ok\n", $userinput); |
|
} else { |
|
&Failure($client, "error: ".($!+0) |
|
." untie(GDBM) Failed ". |
|
"while attempting courseidput\n", $userinput); |
|
} |
|
} else { |
|
&Failure($client, "error: ".($!+0) |
|
." tie(GDBM) Failed ". |
|
"while attempting courseidput\n", $userinput); |
|
} |
|
|
|
return 1; |
|
} |
|
®ister_handler("courseidput", \&put_course_id_handler, 0, 1, 0); |
|
|
|
sub put_course_id_hash_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
my $userinput = "$cmd:$tail"; |
|
my ($udom,$mode,$what) = split(/:/, $tail,3); |
|
chomp($what); |
|
my $now=time; |
|
my @pairs=split(/\&/,$what); |
|
my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT()); |
|
if ($hashref) { |
|
foreach my $pair (@pairs) { |
|
my ($key,$value)=split(/=/,$pair); |
|
my $unesc_key = &unescape($key); |
|
if ($mode ne 'timeonly') { |
|
if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) { |
|
my $curritems = &Apache::lonnet::thaw_unescape($key); |
|
if (ref($curritems) ne 'HASH') { |
|
my @current_items = split(/:/,$hashref->{$key},-1); |
|
my $lasttime = pop(@current_items); |
|
$hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime; |
|
} else { |
|
$hashref->{&escape('lasttime:'.$unesc_key)} = ''; |
|
} |
|
} |
|
$hashref->{$key} = $value; |
|
} |
|
if ($mode ne 'notime') { |
|
$hashref->{&escape('lasttime:'.$unesc_key)} = $now; |
|
} |
|
} |
|
if (&untie_domain_hash($hashref)) { |
|
&Reply($client, "ok\n", $userinput); |
|
} else { |
|
&Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". |
|
"while attempting courseidputhash\n", $userinput); |
|
} |
|
} else { |
|
&Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". |
|
"while attempting courseidputhash\n", $userinput); |
|
} |
|
return 1; |
|
} |
|
®ister_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0); |
|
|
|
# Retrieves the value of a course id resource keyword pattern |
|
# defined since a starting date. Both the starting date and the |
|
# keyword pattern are optional. If the starting date is not supplied it |
|
# is treated as the beginning of time. If the pattern is not found, |
|
# it is treatred as "." matching everything. |
|
# |
|
# Parameters: |
|
# $cmd - Command keyword that resulted in us being dispatched. |
|
# $tail - The remainder of the command that, in this case, consists |
|
# of a colon separated list of: |
|
# domain - The domain in which the course database is |
|
# defined. |
|
# since - Optional parameter describing the minimum |
|
# time of definition(?) of the resources that |
|
# will match the dump. |
|
# description - regular expression that is used to filter |
|
# the dump. Only keywords matching this regexp |
|
# will be used. |
|
# institutional code - optional supplied code to filter |
|
# the dump. Only courses with an institutional code |
|
# that match the supplied code will be returned. |
|
# owner - optional supplied username and domain of owner to |
|
# filter the dump. Only courses for which the course |
|
# owner matches the supplied username and/or domain |
|
# will be returned. Pre-2.2.0 legacy entries from |
|
# nohist_courseiddump will only contain usernames. |
|
# type - optional parameter for selection |
|
# regexp_ok - if true, allow the supplied institutional code |
|
# filter to behave as a regular expression. |
|
# rtn_as_hash - whether to return the information available for |
|
# each matched item as a frozen hash of all |
|
# key, value pairs in the item's hash, or as a |
|
# colon-separated list of (in order) description, |
|
# institutional code, and course owner. |
|
# selfenrollonly - filter by courses allowing self-enrollment |
|
# now or in the future (selfenrollonly = 1). |
|
# catfilter - filter by course category, assigned to a course |
|
# using manually defined categories (i.e., not |
|
# self-cataloging based on on institutional code). |
|
# showhidden - include course in results even if course |
|
# was set to be excluded from course catalog (DC only). |
|
# caller - if set to 'coursecatalog', courses set to be hidden |
|
# from course catalog will be excluded from results (unless |
|
# overridden by "showhidden". |
|
# |
|
# $client - The socket open on the client. |
|
# Returns: |
|
# 1 - Continue processing. |
|
# Side Effects: |
|
# a reply is written to $client. |
|
sub dump_course_id_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter, |
|
$typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden, |
|
$caller) =split(/:/,$tail); |
|
my $now = time; |
|
if (defined($description)) { |
|
$description=&unescape($description); |
|
} else { |
|
$description='.'; |
|
} |
|
if (defined($instcodefilter)) { |
|
$instcodefilter=&unescape($instcodefilter); |
|
} else { |
|
$instcodefilter='.'; |
|
} |
|
my ($ownerunamefilter,$ownerdomfilter); |
|
if (defined($ownerfilter)) { |
|
$ownerfilter=&unescape($ownerfilter); |
|
if ($ownerfilter ne '.' && defined($ownerfilter)) { |
|
if ($ownerfilter =~ /^([^:]*):([^:]*)$/) { |
|
$ownerunamefilter = $1; |
|
$ownerdomfilter = $2; |
|
} else { |
|
$ownerunamefilter = $ownerfilter; |
|
$ownerdomfilter = ''; |
|
} |
|
} |
|
} else { |
|
$ownerfilter='.'; |
|
} |
|
|
|
if (defined($coursefilter)) { |
|
$coursefilter=&unescape($coursefilter); |
|
} else { |
|
$coursefilter='.'; |
|
} |
|
if (defined($typefilter)) { |
|
$typefilter=&unescape($typefilter); |
|
} else { |
|
$typefilter='.'; |
|
} |
|
if (defined($regexp_ok)) { |
|
$regexp_ok=&unescape($regexp_ok); |
|
} |
|
if (defined($catfilter)) { |
|
$catfilter=&unescape($catfilter); |
|
} |
|
my $unpack = 1; |
|
if ($description eq '.' && $instcodefilter eq '.' && $coursefilter eq '.' && |
|
$typefilter eq '.') { |
|
$unpack = 0; |
|
} |
|
if (!defined($since)) { $since=0; } |
|
my $qresult=''; |
|
my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT()); |
|
if ($hashref) { |
|
while (my ($key,$value) = each(%$hashref)) { |
|
my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val, |
|
%unesc_val,$selfenroll_end,$selfenroll_types); |
|
$unesc_key = &unescape($key); |
|
if ($unesc_key =~ /^lasttime:/) { |
|
next; |
|
} else { |
|
$lasttime_key = &escape('lasttime:'.$unesc_key); |
|
} |
|
if ($hashref->{$lasttime_key} ne '') { |
|
$lasttime = $hashref->{$lasttime_key}; |
|
next if ($lasttime<$since); |
|
} |
|
my $items = &Apache::lonnet::thaw_unescape($value); |
|
if (ref($items) eq 'HASH') { |
|
$is_hash = 1; |
|
if ($unpack || !$rtn_as_hash) { |
|
$unesc_val{'descr'} = $items->{'description'}; |
|
$unesc_val{'inst_code'} = $items->{'inst_code'}; |
|
$unesc_val{'owner'} = $items->{'owner'}; |
|
$unesc_val{'type'} = $items->{'type'}; |
|
} |
|
$selfenroll_types = $items->{'selfenroll_types'}; |
|
$selfenroll_end = $items->{'selfenroll_end_date'}; |
|
if ($selfenrollonly) { |
|
next if (!$selfenroll_types); |
|
if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) { |
|
next; |
|
} |
|
} |
|
if ($catfilter ne '') { |
|
next if ($items->{'categories'} eq ''); |
|
my @categories = split('&',$items->{'categories'}); |
|
next if (@categories == 0); |
|
my @subcats = split('&',$catfilter); |
|
my $matchcat = 0; |
|
foreach my $cat (@categories) { |
|
if (grep(/^\Q$cat\E$/,@subcats)) { |
|
$matchcat = 1; |
|
last; |
|
} |
|
} |
|
next if (!$matchcat); |
|
} |
|
if ($caller eq 'coursecatalog') { |
|
if ($items->{'hidefromcat'} eq 'yes') { |
|
next if !$showhidden; |
|
} |
|
} |
|
} else { |
|
next if ($catfilter ne ''); |
|
next if ($selfenrollonly); |
|
$is_hash = 0; |
|
my @courseitems = split(/:/,$value); |
|
$lasttime = pop(@courseitems); |
|
if ($hashref->{$lasttime_key} eq '') { |
|
next if ($lasttime<$since); |
|
} |
|
($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems; |
|
} |
|
my $match = 1; |
|
if ($description ne '.') { |
|
if (!$is_hash) { |
|
$unesc_val{'descr'} = &unescape($val{'descr'}); |
|
} |
|
if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) { |
|
$match = 0; |
|
} |
|
} |
|
if ($instcodefilter ne '.') { |
|
if (!$is_hash) { |
|
$unesc_val{'inst_code'} = &unescape($val{'inst_code'}); |
|
} |
|
if ($regexp_ok) { |
|
if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) { |
|
$match = 0; |
|
} |
|
} else { |
|
if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) { |
|
$match = 0; |
|
} |
|
} |
|
} |
|
if ($ownerfilter ne '.') { |
|
if (!$is_hash) { |
|
$unesc_val{'owner'} = &unescape($val{'owner'}); |
|
} |
|
if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) { |
|
if ($unesc_val{'owner'} =~ /:/) { |
|
if (eval{$unesc_val{'owner'} !~ |
|
/\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) { |
|
$match = 0; |
|
} |
|
} else { |
|
if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) { |
|
$match = 0; |
|
} |
|
} |
|
} elsif ($ownerunamefilter ne '') { |
|
if ($unesc_val{'owner'} =~ /:/) { |
|
if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) { |
|
$match = 0; |
|
} |
|
} else { |
|
if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) { |
|
$match = 0; |
|
} |
|
} |
|
} elsif ($ownerdomfilter ne '') { |
|
if ($unesc_val{'owner'} =~ /:/) { |
|
if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) { |
|
$match = 0; |
|
} |
|
} else { |
|
if ($ownerdomfilter ne $udom) { |
|
$match = 0; |
|
} |
|
} |
|
} |
|
} |
|
if ($coursefilter ne '.') { |
|
if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) { |
|
$match = 0; |
|
} |
|
} |
|
if ($typefilter ne '.') { |
|
if (!$is_hash) { |
|
$unesc_val{'type'} = &unescape($val{'type'}); |
|
} |
|
if ($unesc_val{'type'} eq '') { |
|
if ($typefilter ne 'Course') { |
|
$match = 0; |
|
} |
|
} else { |
|
if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) { |
|
$match = 0; |
|
} |
|
} |
|
} |
|
if ($match == 1) { |
|
if ($rtn_as_hash) { |
|
if ($is_hash) { |
|
$qresult.=$key.'='.$value.'&'; |
|
} else { |
|
my %rtnhash = ( 'description' => &unescape($val{'descr'}), |
|
'inst_code' => &unescape($val{'inst_code'}), |
|
'owner' => &unescape($val{'owner'}), |
|
'type' => &unescape($val{'type'}), |
|
); |
|
my $items = &Apache::lonnet::freeze_escape(\%rtnhash); |
|
$qresult.=$key.'='.$items.'&'; |
|
} |
|
} else { |
|
if ($is_hash) { |
|
$qresult .= $key.'='.&escape($unesc_val{'descr'}).':'. |
|
&escape($unesc_val{'inst_code'}).':'. |
|
&escape($unesc_val{'owner'}).'&'; |
|
} else { |
|
$qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}. |
|
':'.$val{'owner'}.'&'; |
|
} |
|
} |
|
} |
|
} |
|
if (&untie_domain_hash($hashref)) { |
|
chop($qresult); |
|
&Reply($client, \$qresult, $userinput); |
|
} else { |
|
&Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". |
|
"while attempting courseiddump\n", $userinput); |
|
} |
|
} else { |
|
&Failure($client, "error: ".($!+0)." tie(GDBM) Failed ". |
|
"while attempting courseiddump\n", $userinput); |
|
} |
|
return 1; |
|
} |
|
®ister_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0); |
|
|
|
# |
|
# Puts an unencrypted entry in a namespace db file at the domain level |
|
# |
|
# Parameters: |
|
# $cmd - The command that got us here. |
|
# $tail - Tail of the command (remaining parameters). |
|
# $client - File descriptor connected to client. |
|
# Returns |
|
# 0 - Requested to exit, caller should shut down. |
|
# 1 - Continue processing. |
|
# Side effects: |
|
# reply is written to $client. |
|
# |
|
sub put_domain_handler { |
|
my ($cmd,$tail,$client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($udom,$namespace,$what) =split(/:/,$tail,3); |
|
chomp($what); |
|
my @pairs=split(/\&/,$what); |
|
my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(), |
|
"P", $what); |
|
if ($hashref) { |
|
foreach my $pair (@pairs) { |
|
my ($key,$value)=split(/=/,$pair); |
|
$hashref->{$key}=$value; |
|
} |
|
if (&untie_domain_hash($hashref)) { |
|
&Reply($client, "ok\n", $userinput); |
|
} else { |
|
&Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". |
|
"while attempting putdom\n", $userinput); |
|
} |
|
} else { |
|
&Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". |
|
"while attempting putdom\n", $userinput); |
|
} |
|
|
|
return 1; |
|
} |
|
®ister_handler("putdom", \&put_domain_handler, 0, 1, 0); |
|
|
|
# Unencrypted get from the namespace database file at the domain level. |
|
# This function retrieves a keyed item from a specific named database in the |
|
# domain directory. |
|
# |
|
# Parameters: |
|
# $cmd - Command request keyword (get). |
|
# $tail - Tail of the command. This is a colon separated list |
|
# consisting of the domain and the 'namespace' |
|
# which selects the gdbm file to do the lookup in, |
|
# & separated list of keys to lookup. Note that |
|
# the values are returned as an & separated list too. |
|
# $client - File descriptor open on the client. |
|
# Returns: |
|
# 1 - Continue processing. |
|
# 0 - Exit. |
|
# Side effects: |
|
# reply is written to $client. |
|
# |
|
|
|
sub get_domain_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "$client:$tail"; |
|
|
|
my ($udom,$namespace,$what)=split(/:/,$tail,3); |
|
chomp($what); |
|
my @queries=split(/\&/,$what); |
|
my $qresult=''; |
|
my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_READER()); |
|
if ($hashref) { |
|
for (my $i=0;$i<=$#queries;$i++) { |
|
$qresult.="$hashref->{$queries[$i]}&"; |
|
} |
|
if (&untie_domain_hash($hashref)) { |
|
$qresult=~s/\&$//; |
|
&Reply($client, \$qresult, $userinput); |
|
} else { |
|
&Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ". |
|
"while attempting getdom\n",$userinput); |
|
} |
|
} else { |
|
&Failure($client, "error: ".($!+0)." tie(GDBM) Failed ". |
|
"while attempting getdom\n",$userinput); |
|
} |
|
|
|
return 1; |
|
} |
|
®ister_handler("getdom", \&get_domain_handler, 0, 1, 0); |
|
|
|
|
|
# |
|
# Puts an id to a domains id database. |
|
# |
|
# Parameters: |
|
# $cmd - The command that triggered us. |
|
# $tail - Remainder of the request other than the command. This is a |
|
# colon separated list containing: |
|
# $domain - The domain for which we are writing the id. |
|
# $pairs - The id info to write... this is and & separated list |
|
# of keyword=value. |
|
# $client - Socket open on the client. |
|
# Returns: |
|
# 1 - Continue processing. |
|
# Side effects: |
|
# reply is written to $client. |
|
# |
|
sub put_id_handler { |
|
my ($cmd,$tail,$client) = @_; |
|
|
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($udom,$what)=split(/:/,$tail); |
|
chomp($what); |
|
my @pairs=split(/\&/,$what); |
|
my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(), |
|
"P", $what); |
|
if ($hashref) { |
|
foreach my $pair (@pairs) { |
|
my ($key,$value)=split(/=/,$pair); |
|
$hashref->{$key}=$value; |
|
} |
|
if (&untie_domain_hash($hashref)) { |
|
&Reply($client, "ok\n", $userinput); |
|
} else { |
|
&Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". |
|
"while attempting idput\n", $userinput); |
|
} |
|
} else { |
|
&Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". |
|
"while attempting idput\n", $userinput); |
|
} |
|
|
|
return 1; |
|
} |
|
®ister_handler("idput", \&put_id_handler, 0, 1, 0); |
|
|
|
# |
|
# Retrieves a set of id values from the id database. |
|
# Returns an & separated list of results, one for each requested id to the |
|
# client. |
|
# |
|
# Parameters: |
|
# $cmd - Command keyword that caused us to be dispatched. |
|
# $tail - Tail of the command. Consists of a colon separated: |
|
# domain - the domain whose id table we dump |
|
# ids Consists of an & separated list of |
|
# id keywords whose values will be fetched. |
|
# nonexisting keywords will have an empty value. |
|
# $client - Socket open on the client. |
|
# |
|
# Returns: |
|
# 1 - indicating processing should continue. |
|
# Side effects: |
|
# An & separated list of results is written to $client. |
|
# |
|
sub get_id_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
|
|
my $userinput = "$client:$tail"; |
|
|
|
my ($udom,$what)=split(/:/,$tail); |
|
chomp($what); |
|
my @queries=split(/\&/,$what); |
|
my $qresult=''; |
|
my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER()); |
|
if ($hashref) { |
|
for (my $i=0;$i<=$#queries;$i++) { |
|
$qresult.="$hashref->{$queries[$i]}&"; |
|
} |
|
if (&untie_domain_hash($hashref)) { |
|
$qresult=~s/\&$//; |
|
&Reply($client, \$qresult, $userinput); |
|
} else { |
|
&Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ". |
|
"while attempting idget\n",$userinput); |
|
} |
|
} else { |
|
&Failure($client, "error: ".($!+0)." tie(GDBM) Failed ". |
|
"while attempting idget\n",$userinput); |
|
} |
|
|
|
return 1; |
|
} |
|
®ister_handler("idget", \&get_id_handler, 0, 1, 0); |
|
|
|
# |
|
# Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database |
|
# |
|
# Parameters |
|
# $cmd - Command keyword that caused us to be dispatched. |
|
# $tail - Tail of the command. Consists of a colon separated: |
|
# domain - the domain whose dcmail we are recording |
|
# email Consists of key=value pair |
|
# where key is unique msgid |
|
# and value is message (in XML) |
|
# $client - Socket open on the client. |
|
# |
|
# Returns: |
|
# 1 - indicating processing should continue. |
|
# Side effects |
|
# reply is written to $client. |
|
# |
|
sub put_dcmail_handler { |
|
my ($cmd,$tail,$client) = @_; |
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($udom,$what)=split(/:/,$tail); |
|
chomp($what); |
|
my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT()); |
|
if ($hashref) { |
|
my ($key,$value)=split(/=/,$what); |
|
$hashref->{$key}=$value; |
|
} |
|
if (&untie_domain_hash($hashref)) { |
|
&Reply($client, "ok\n", $userinput); |
|
} else { |
|
&Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". |
|
"while attempting dcmailput\n", $userinput); |
|
} |
|
return 1; |
|
} |
|
®ister_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0); |
|
|
|
# |
|
# Retrieves broadcast e-mail from nohist_dcmail database |
|
# Returns to client an & separated list of key=value pairs, |
|
# where key is msgid and value is message information. |
|
# |
|
# Parameters |
|
# $cmd - Command keyword that caused us to be dispatched. |
|
# $tail - Tail of the command. Consists of a colon separated: |
|
# domain - the domain whose dcmail table we dump |
|
# startfilter - beginning of time window |
|
# endfilter - end of time window |
|
# sendersfilter - & separated list of username:domain |
|
# for senders to search for. |
|
# $client - Socket open on the client. |
|
# |
|
# Returns: |
|
# 1 - indicating processing should continue. |
|
# Side effects |
|
# reply (& separated list of msgid=messageinfo pairs) is |
|
# written to $client. |
|
# |
|
sub dump_dcmail_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail); |
|
chomp($sendersfilter); |
|
my @senders = (); |
|
if (defined($startfilter)) { |
|
$startfilter=&unescape($startfilter); |
|
} else { |
|
$startfilter='.'; |
|
} |
|
if (defined($endfilter)) { |
|
$endfilter=&unescape($endfilter); |
|
} else { |
|
$endfilter='.'; |
|
} |
|
if (defined($sendersfilter)) { |
|
$sendersfilter=&unescape($sendersfilter); |
|
@senders = map { &unescape($_) } split(/\&/,$sendersfilter); |
|
} |
|
|
|
my $qresult=''; |
|
my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT()); |
|
if ($hashref) { |
|
while (my ($key,$value) = each(%$hashref)) { |
|
my $match = 1; |
|
my ($timestamp,$subj,$uname,$udom) = |
|
split(/:/,&unescape(&unescape($key)),5); # yes, twice really |
|
$subj = &unescape($subj); |
|
unless ($startfilter eq '.' || !defined($startfilter)) { |
|
if ($timestamp < $startfilter) { |
|
$match = 0; |
|
} |
|
} |
|
unless ($endfilter eq '.' || !defined($endfilter)) { |
|
if ($timestamp > $endfilter) { |
|
$match = 0; |
|
} |
|
} |
|
unless (@senders < 1) { |
|
unless (grep/^$uname:$udom$/,@senders) { |
|
$match = 0; |
|
} |
|
} |
|
if ($match == 1) { |
|
$qresult.=$key.'='.$value.'&'; |
|
} |
|
} |
|
if (&untie_domain_hash($hashref)) { |
|
chop($qresult); |
|
&Reply($client, \$qresult, $userinput); |
|
} else { |
|
&Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". |
|
"while attempting dcmaildump\n", $userinput); |
|
} |
|
} else { |
|
&Failure($client, "error: ".($!+0)." tie(GDBM) Failed ". |
|
"while attempting dcmaildump\n", $userinput); |
|
} |
|
return 1; |
|
} |
|
|
|
®ister_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0); |
|
|
|
# |
|
# Puts domain roles in nohist_domainroles database |
|
# |
|
# Parameters |
|
# $cmd - Command keyword that caused us to be dispatched. |
|
# $tail - Tail of the command. Consists of a colon separated: |
|
# domain - the domain whose roles we are recording |
|
# role - Consists of key=value pair |
|
# where key is unique role |
|
# and value is start/end date information |
|
# $client - Socket open on the client. |
|
# |
|
# Returns: |
|
# 1 - indicating processing should continue. |
|
# Side effects |
|
# reply is written to $client. |
|
# |
|
|
|
sub put_domainroles_handler { |
|
my ($cmd,$tail,$client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
my ($udom,$what)=split(/:/,$tail); |
|
chomp($what); |
|
my @pairs=split(/\&/,$what); |
|
my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT()); |
|
if ($hashref) { |
|
foreach my $pair (@pairs) { |
|
my ($key,$value)=split(/=/,$pair); |
|
$hashref->{$key}=$value; |
|
} |
|
if (&untie_domain_hash($hashref)) { |
|
&Reply($client, "ok\n", $userinput); |
|
} else { |
|
&Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". |
|
"while attempting domroleput\n", $userinput); |
|
} |
|
} else { |
|
&Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". |
|
"while attempting domroleput\n", $userinput); |
|
} |
|
|
|
return 1; |
|
} |
|
|
|
®ister_handler("domroleput", \&put_domainroles_handler, 0, 1, 0); |
|
|
|
# |
|
# Retrieves domain roles from nohist_domainroles database |
|
# Returns to client an & separated list of key=value pairs, |
|
# where key is role and value is start and end date information. |
|
# |
|
# Parameters |
|
# $cmd - Command keyword that caused us to be dispatched. |
|
# $tail - Tail of the command. Consists of a colon separated: |
|
# domain - the domain whose domain roles table we dump |
|
# $client - Socket open on the client. |
|
# |
|
# Returns: |
|
# 1 - indicating processing should continue. |
|
# Side effects |
|
# reply (& separated list of role=start/end info pairs) is |
|
# written to $client. |
|
# |
|
sub dump_domainroles_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail); |
|
chomp($rolesfilter); |
|
my @roles = (); |
|
if (defined($startfilter)) { |
|
$startfilter=&unescape($startfilter); |
|
} else { |
|
$startfilter='.'; |
|
} |
|
if (defined($endfilter)) { |
|
$endfilter=&unescape($endfilter); |
|
} else { |
|
$endfilter='.'; |
|
} |
|
if (defined($rolesfilter)) { |
|
$rolesfilter=&unescape($rolesfilter); |
|
@roles = split(/\&/,$rolesfilter); |
|
} |
|
|
|
my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT()); |
|
if ($hashref) { |
|
my $qresult = ''; |
|
while (my ($key,$value) = each(%$hashref)) { |
|
my $match = 1; |
|
my ($start,$end) = split(/:/,&unescape($value)); |
|
my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key)); |
|
unless ($startfilter eq '.' || !defined($startfilter)) { |
|
if ((defined($start)) && ($start >= $startfilter)) { |
|
$match = 0; |
|
} |
|
} |
|
unless ($endfilter eq '.' || !defined($endfilter)) { |
|
if ((defined($end)) && ($end <= $endfilter)) { |
|
$match = 0; |
|
} |
|
} |
|
unless (@roles < 1) { |
|
unless (grep/^\Q$trole\E$/,@roles) { |
|
$match = 0; |
|
} |
|
} |
|
if ($match == 1) { |
|
$qresult.=$key.'='.$value.'&'; |
|
} |
|
} |
|
if (&untie_domain_hash($hashref)) { |
|
chop($qresult); |
|
&Reply($client, \$qresult, $userinput); |
|
} else { |
|
&Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". |
|
"while attempting domrolesdump\n", $userinput); |
|
} |
|
} else { |
|
&Failure($client, "error: ".($!+0)." tie(GDBM) Failed ". |
|
"while attempting domrolesdump\n", $userinput); |
|
} |
|
return 1; |
|
} |
|
|
|
®ister_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0); |
|
|
|
|
|
# Process the tmpput command I'm not sure what this does.. Seems to |
|
# create a file in the lonDaemons/tmp directory of the form $id.tmp |
|
# where Id is the client's ip concatenated with a sequence number. |
|
# The file will contain some value that is passed in. Is this e.g. |
|
# a login token? |
|
# |
|
# Parameters: |
|
# $cmd - The command that got us dispatched. |
|
# $tail - The remainder of the request following $cmd: |
|
# In this case this will be the contents of the file. |
|
# $client - Socket connected to the client. |
|
# Returns: |
|
# 1 indicating processing can continue. |
|
# Side effects: |
|
# A file is created in the local filesystem. |
|
# A reply is sent to the client. |
|
sub tmp_put_handler { |
|
my ($cmd, $what, $client) = @_; |
|
|
|
my $userinput = "$cmd:$what"; # Reconstruct for logging. |
|
|
|
my ($record,$context) = split(/:/,$what); |
|
if ($context ne '') { |
|
chomp($context); |
|
$context = &unescape($context); |
|
} |
|
my ($id,$store); |
|
$tmpsnum++; |
|
if ($context eq 'resetpw') { |
|
$id = &md5_hex(&md5_hex(time.{}.rand().$$)); |
|
} else { |
|
$id = $$.'_'.$clientip.'_'.$tmpsnum; |
|
} |
|
$id=~s/\W/\_/g; |
|
$record=~s/\n//g; |
|
my $execdir=$perlvar{'lonDaemons'}; |
|
if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) { |
|
print $store $record; |
|
close $store; |
|
&Reply($client, \$id, $userinput); |
|
} else { |
|
&Failure( $client, "error: ".($!+0)."IO::File->new Failed ". |
|
"while attempting tmpput\n", $userinput); |
|
} |
|
return 1; |
|
|
|
} |
|
®ister_handler("tmpput", \&tmp_put_handler, 0, 1, 0); |
|
|
|
# Processes the tmpget command. This command returns the contents |
|
# of a temporary resource file(?) created via tmpput. |
|
# |
|
# Paramters: |
|
# $cmd - Command that got us dispatched. |
|
# $id - Tail of the command, contain the id of the resource |
|
# we want to fetch. |
|
# $client - socket open on the client. |
|
# Return: |
|
# 1 - Inidcating processing can continue. |
|
# Side effects: |
|
# A reply is sent to the client. |
|
# |
|
sub tmp_get_handler { |
|
my ($cmd, $id, $client) = @_; |
|
|
|
my $userinput = "$cmd:$id"; |
|
|
|
|
|
$id=~s/\W/\_/g; |
|
my $store; |
|
my $execdir=$perlvar{'lonDaemons'}; |
|
if ($store=IO::File->new("$execdir/tmp/$id.tmp")) { |
|
my $reply=<$store>; |
|
&Reply( $client, \$reply, $userinput); |
|
close $store; |
|
} else { |
|
&Failure( $client, "error: ".($!+0)."IO::File->new Failed ". |
|
"while attempting tmpget\n", $userinput); |
|
} |
|
|
|
return 1; |
|
} |
|
®ister_handler("tmpget", \&tmp_get_handler, 0, 1, 0); |
|
|
|
# |
|
# Process the tmpdel command. This command deletes a temp resource |
|
# created by the tmpput command. |
|
# |
|
# Parameters: |
|
# $cmd - Command that got us here. |
|
# $id - Id of the temporary resource created. |
|
# $client - socket open on the client process. |
|
# |
|
# Returns: |
|
# 1 - Indicating processing should continue. |
|
# Side Effects: |
|
# A file is deleted |
|
# A reply is sent to the client. |
|
sub tmp_del_handler { |
|
my ($cmd, $id, $client) = @_; |
|
|
|
my $userinput= "$cmd:$id"; |
|
|
|
chomp($id); |
|
$id=~s/\W/\_/g; |
|
my $execdir=$perlvar{'lonDaemons'}; |
|
if (unlink("$execdir/tmp/$id.tmp")) { |
|
&Reply($client, "ok\n", $userinput); |
|
} else { |
|
&Failure( $client, "error: ".($!+0)."Unlink tmp Failed ". |
|
"while attempting tmpdel\n", $userinput); |
|
} |
|
|
|
return 1; |
|
|
|
} |
|
®ister_handler("tmpdel", \&tmp_del_handler, 0, 1, 0); |
|
|
|
# |
|
# Processes the setannounce command. This command |
|
# creates a file named announce.txt in the top directory of |
|
# the documentn root and sets its contents. The announce.txt file is |
|
# printed in its entirety at the LonCAPA login page. Note: |
|
# once the announcement.txt fileis created it cannot be deleted. |
|
# However, setting the contents of the file to empty removes the |
|
# announcement from the login page of loncapa so who cares. |
|
# |
|
# Parameters: |
|
# $cmd - The command that got us dispatched. |
|
# $announcement - The text of the announcement. |
|
# $client - Socket open on the client process. |
|
# Retunrns: |
|
# 1 - Indicating request processing should continue |
|
# Side Effects: |
|
# The file {DocRoot}/announcement.txt is created. |
|
# A reply is sent to $client. |
|
# |
|
sub set_announce_handler { |
|
my ($cmd, $announcement, $client) = @_; |
|
|
|
my $userinput = "$cmd:$announcement"; |
|
|
|
chomp($announcement); |
|
$announcement=&unescape($announcement); |
|
if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}. |
|
'/announcement.txt')) { |
|
print $store $announcement; |
|
close $store; |
|
&Reply($client, "ok\n", $userinput); |
|
} else { |
|
&Failure($client, "error: ".($!+0)."\n", $userinput); |
|
} |
|
|
|
return 1; |
|
} |
|
®ister_handler("setannounce", \&set_announce_handler, 0, 1, 0); |
|
|
|
# |
|
# Return the version of the daemon. This can be used to determine |
|
# the compatibility of cross version installations or, alternatively to |
|
# simply know who's out of date and who isn't. Note that the version |
|
# is returned concatenated with the tail. |
|
# Parameters: |
|
# $cmd - the request that dispatched to us. |
|
# $tail - Tail of the request (client's version?). |
|
# $client - Socket open on the client. |
|
#Returns: |
|
# 1 - continue processing requests. |
|
# Side Effects: |
|
# Replies with version to $client. |
|
sub get_version_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = $cmd.$tail; |
|
|
|
&Reply($client, &version($userinput)."\n", $userinput); |
|
|
|
|
|
return 1; |
|
} |
|
®ister_handler("version", \&get_version_handler, 0, 1, 0); |
|
|
|
# Set the current host and domain. This is used to support |
|
# multihomed systems. Each IP of the system, or even separate daemons |
|
# on the same IP can be treated as handling a separate lonCAPA virtual |
|
# machine. This command selects the virtual lonCAPA. The client always |
|
# knows the right one since it is lonc and it is selecting the domain/system |
|
# from the hosts.tab file. |
|
# Parameters: |
|
# $cmd - Command that dispatched us. |
|
# $tail - Tail of the command (domain/host requested). |
|
# $socket - Socket open on the client. |
|
# |
|
# Returns: |
|
# 1 - Indicates the program should continue to process requests. |
|
# Side-effects: |
|
# The default domain/system context is modified for this daemon. |
|
# a reply is sent to the client. |
|
# |
|
sub set_virtual_host_handler { |
|
my ($cmd, $tail, $socket) = @_; |
|
|
|
my $userinput ="$cmd:$tail"; |
|
|
|
&Reply($client, &sethost($userinput)."\n", $userinput); |
|
|
|
|
|
return 1; |
|
} |
|
®ister_handler("sethost", \&set_virtual_host_handler, 0, 1, 0); |
|
|
|
# Process a request to exit: |
|
# - "bye" is sent to the client. |
|
# - The client socket is shutdown and closed. |
|
# - We indicate to the caller that we should exit. |
|
# Formal Parameters: |
|
# $cmd - The command that got us here. |
|
# $tail - Tail of the command (empty). |
|
# $client - Socket open on the tail. |
|
# Returns: |
|
# 0 - Indicating the program should exit!! |
|
# |
|
sub exit_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
|
|
my $userinput = "$cmd:$tail"; |
|
|
|
&logthis("Client $clientip ($clientname) hanging up: $userinput"); |
|
&Reply($client, "bye\n", $userinput); |
|
$client->shutdown(2); # shutdown the socket forcibly. |
|
$client->close(); |
|
|
|
return 0; |
|
} |
|
®ister_handler("exit", \&exit_handler, 0,1,1); |
|
®ister_handler("init", \&exit_handler, 0,1,1); |
|
®ister_handler("quit", \&exit_handler, 0,1,1); |
|
|
|
# Determine if auto-enrollment is enabled. |
|
# Note that the original had what I believe to be a defect. |
|
# The original returned 0 if the requestor was not a registerd client. |
|
# It should return "refused". |
|
# Formal Parameters: |
|
# $cmd - The command that invoked us. |
|
# $tail - The tail of the command (Extra command parameters. |
|
# $client - The socket open on the client that issued the request. |
|
# Returns: |
|
# 1 - Indicating processing should continue. |
|
# |
|
sub enrollment_enabled_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
my $userinput = $cmd.":".$tail; # For logging purposes. |
|
|
|
|
|
my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about. |
|
|
|
my $outcome = &localenroll::run($cdom); |
|
&Reply($client, \$outcome, $userinput); |
|
|
|
return 1; |
|
} |
|
®ister_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0); |
|
|
|
# Get the official sections for which auto-enrollment is possible. |
|
# Since the admin people won't know about 'unofficial sections' |
|
# we cannot auto-enroll on them. |
|
# Formal Parameters: |
|
# $cmd - The command request that got us dispatched here. |
|
# $tail - The remainder of the request. In our case this |
|
# will be split into: |
|
# $coursecode - The course name from the admin point of view. |
|
# $cdom - The course's domain(?). |
|
# $client - Socket open on the client. |
|
# Returns: |
|
# 1 - Indiciting processing should continue. |
|
# |
|
sub get_sections_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($coursecode, $cdom) = split(/:/, $tail); |
|
my @secs = &localenroll::get_sections($coursecode,$cdom); |
|
my $seclist = &escape(join(':',@secs)); |
|
|
|
&Reply($client, \$seclist, $userinput); |
|
|
|
|
|
return 1; |
|
} |
|
®ister_handler("autogetsections", \&get_sections_handler, 0, 1, 0); |
|
|
|
# Validate the owner of a new course section. |
|
# |
|
# Formal Parameters: |
|
# $cmd - Command that got us dispatched. |
|
# $tail - the remainder of the command. For us this consists of a |
|
# colon separated string containing: |
|
# $inst - Course Id from the institutions point of view. |
|
# $owner - Proposed owner of the course. |
|
# $cdom - Domain of the course (from the institutions |
|
# point of view?).. |
|
# $client - Socket open on the client. |
|
# |
|
# Returns: |
|
# 1 - Processing should continue. |
|
# |
|
sub validate_course_owner_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
my $userinput = "$cmd:$tail"; |
|
my ($inst_course_id, $owner, $cdom) = split(/:/, $tail); |
|
|
|
$owner = &unescape($owner); |
|
my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom); |
|
&Reply($client, \$outcome, $userinput); |
|
|
|
|
|
|
|
return 1; |
|
} |
|
®ister_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0); |
|
|
|
# |
|
# Validate a course section in the official schedule of classes |
|
# from the institutions point of view (part of autoenrollment). |
|
# |
|
# Formal Parameters: |
|
# $cmd - The command request that got us dispatched. |
|
# $tail - The tail of the command. In this case, |
|
# this is a colon separated set of words that will be split |
|
# into: |
|
# $inst_course_id - The course/section id from the |
|
# institutions point of view. |
|
# $cdom - The domain from the institutions |
|
# point of view. |
|
# $client - Socket open on the client. |
|
# Returns: |
|
# 1 - Indicating processing should continue. |
|
# |
|
sub validate_course_section_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
my $userinput = "$cmd:$tail"; |
|
my ($inst_course_id, $cdom) = split(/:/, $tail); |
|
|
|
my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom); |
|
&Reply($client, \$outcome, $userinput); |
|
|
|
|
|
return 1; |
|
} |
|
®ister_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0); |
|
|
|
# |
|
# Validate course owner's access to enrollment data for specific class section. |
|
# |
|
# |
|
# Formal Parameters: |
|
# $cmd - The command request that got us dispatched. |
|
# $tail - The tail of the command. In this case this is a colon separated |
|
# set of words that will be split into: |
|
# $inst_class - Institutional code for the specific class section |
|
# $courseowner - The escaped username:domain of the course owner |
|
# $cdom - The domain of the course from the institution's |
|
# point of view. |
|
# $client - The socket open on the client. |
|
# Returns: |
|
# 1 - continue processing. |
|
# |
|
|
|
sub validate_class_access_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
my $userinput = "$cmd:$tail"; |
|
my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail); |
|
my $owners = &unescape($ownerlist); |
|
my $outcome; |
|
eval { |
|
local($SIG{__DIE__})='DEFAULT'; |
|
$outcome=&localenroll::check_section($inst_class,$owners,$cdom); |
|
}; |
|
&Reply($client,\$outcome, $userinput); |
|
|
|
return 1; |
|
} |
|
®ister_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0); |
|
|
|
# |
|
# Create a password for a new LON-CAPA user added by auto-enrollment. |
|
# Only used for case where authentication method for new user is localauth |
|
# |
|
# Formal Parameters: |
|
# $cmd - The command request that got us dispatched. |
|
# $tail - The tail of the command. In this case this is a colon separated |
|
# set of words that will be split into: |
|
# $authparam - An authentication parameter (localauth parameter). |
|
# $cdom - The domain of the course from the institution's |
|
# point of view. |
|
# $client - The socket open on the client. |
|
# Returns: |
|
# 1 - continue processing. |
|
# |
|
sub create_auto_enroll_password_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
my $userinput = "$cmd:$tail"; |
|
|
|
my ($authparam, $cdom) = split(/:/, $userinput); |
|
|
|
my ($create_passwd,$authchk); |
|
($authparam, |
|
$create_passwd, |
|
$authchk) = &localenroll::create_password($authparam,$cdom); |
|
|
|
&Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n", |
|
$userinput); |
|
|
|
|
|
return 1; |
|
} |
|
®ister_handler("autocreatepassword", \&create_auto_enroll_password_handler, |
|
0, 1, 0); |
|
|
|
# Retrieve and remove temporary files created by/during autoenrollment. |
|
# |
|
# Formal Parameters: |
|
# $cmd - The command that got us dispatched. |
|
# $tail - The tail of the command. In our case this is a colon |
|
# separated list that will be split into: |
|
# $filename - The name of the file to remove. |
|
# The filename is given as a path relative to |
|
# the LonCAPA temp file directory. |
|
# $client - Socket open on the client. |
|
# |
|
# Returns: |
|
# 1 - Continue processing. |
|
sub retrieve_auto_file_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
my $userinput = "cmd:$tail"; |
|
|
|
my ($filename) = split(/:/, $tail); |
|
|
|
my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename; |
|
if ( (-e $source) && ($filename ne '') ) { |
|
my $reply = ''; |
|
if (open(my $fh,$source)) { |
|
while (<$fh>) { |
|
chomp($_); |
|
$_ =~ s/^\s+//g; |
|
$_ =~ s/\s+$//g; |
|
$reply .= $_; |
|
} |
|
close($fh); |
|
&Reply($client, &escape($reply)."\n", $userinput); |
|
|
|
# Does this have to be uncommented??!? (RF). |
|
# |
|
# unlink($source); |
|
} else { |
|
&Failure($client, "error\n", $userinput); |
|
} |
|
} else { |
|
&Failure($client, "error\n", $userinput); |
|
} |
|
|
|
|
|
return 1; |
|
} |
|
®ister_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0); |
|
|
|
# |
|
# Read and retrieve institutional code format (for support form). |
|
# Formal Parameters: |
|
# $cmd - Command that dispatched us. |
|
# $tail - Tail of the command. In this case it conatins |
|
# the course domain and the coursename. |
|
# $client - Socket open on the client. |
|
# Returns: |
|
# 1 - Continue processing. |
|
# |
|
sub get_institutional_code_format_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
my $userinput = "$cmd:$tail"; |
|
|
|
my $reply; |
|
my($cdom,$course) = split(/:/,$tail); |
|
my @pairs = split/\&/,$course; |
|
my %instcodes = (); |
|
my %codes = (); |
|
my @codetitles = (); |
|
my %cat_titles = (); |
|
my %cat_order = (); |
|
foreach (@pairs) { |
|
my ($key,$value) = split/=/,$_; |
|
$instcodes{&unescape($key)} = &unescape($value); |
|
} |
|
my $formatreply = &localenroll::instcode_format($cdom, |
|
\%instcodes, |
|
\%codes, |
|
\@codetitles, |
|
\%cat_titles, |
|
\%cat_order); |
|
if ($formatreply eq 'ok') { |
|
my $codes_str = &Apache::lonnet::hash2str(%codes); |
|
my $codetitles_str = &Apache::lonnet::array2str(@codetitles); |
|
my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles); |
|
my $cat_order_str = &Apache::lonnet::hash2str(%cat_order); |
|
&Reply($client, |
|
$codes_str.':'.$codetitles_str.':'.$cat_titles_str.':' |
|
.$cat_order_str."\n", |
|
$userinput); |
|
} else { |
|
# this else branch added by RF since if not ok, lonc will |
|
# hang waiting on reply until timeout. |
|
# |
|
&Reply($client, "format_error\n", $userinput); |
|
} |
|
|
|
return 1; |
|
} |
|
®ister_handler("autoinstcodeformat", |
|
\&get_institutional_code_format_handler,0,1,0); |
|
|
|
sub get_institutional_defaults_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
my $userinput = "$cmd:$tail"; |
|
|
|
my $dom = $tail; |
|
my %defaults_hash; |
|
my @code_order; |
|
my $outcome; |
|
eval { |
|
local($SIG{__DIE__})='DEFAULT'; |
|
$outcome = &localenroll::instcode_defaults($dom,\%defaults_hash, |
|
\@code_order); |
|
}; |
|
if (!$@) { |
|
if ($outcome eq 'ok') { |
|
my $result=''; |
|
while (my ($key,$value) = each(%defaults_hash)) { |
|
$result.=&escape($key).'='.&escape($value).'&'; |
|
} |
|
$result .= 'code_order='.&escape(join('&',@code_order)); |
|
&Reply($client,\$result,$userinput); |
|
} else { |
|
&Reply($client,"error\n", $userinput); |
|
} |
|
} else { |
|
&Failure($client,"unknown_cmd\n",$userinput); |
|
} |
|
} |
|
®ister_handler("autoinstcodedefaults", |
|
\&get_institutional_defaults_handler,0,1,0); |
|
|
|
sub get_institutional_user_rules { |
|
my ($cmd, $tail, $client) = @_; |
|
my $userinput = "$cmd:$tail"; |
|
my $dom = &unescape($tail); |
|
my (%rules_hash,@rules_order); |
|
my $outcome; |
|
eval { |
|
local($SIG{__DIE__})='DEFAULT'; |
|
$outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order); |
|
}; |
|
if (!$@) { |
|
if ($outcome eq 'ok') { |
|
my $result; |
|
foreach my $key (keys(%rules_hash)) { |
|
$result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&'; |
|
} |
|
$result =~ s/\&$//; |
|
$result .= ':'; |
|
if (@rules_order > 0) { |
|
foreach my $item (@rules_order) { |
|
$result .= &escape($item).'&'; |
|
} |
|
} |
|
$result =~ s/\&$//; |
|
&Reply($client,\$result,$userinput); |
|
} else { |
|
&Reply($client,"error\n", $userinput); |
|
} |
|
} else { |
|
&Failure($client,"unknown_cmd\n",$userinput); |
|
} |
|
} |
|
®ister_handler("instuserrules",\&get_institutional_user_rules,0,1,0); |
|
|
|
sub get_institutional_id_rules { |
|
my ($cmd, $tail, $client) = @_; |
|
my $userinput = "$cmd:$tail"; |
|
my $dom = &unescape($tail); |
|
my (%rules_hash,@rules_order); |
|
my $outcome; |
|
eval { |
|
local($SIG{__DIE__})='DEFAULT'; |
|
$outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order); |
|
}; |
|
if (!$@) { |
|
if ($outcome eq 'ok') { |
|
my $result; |
|
foreach my $key (keys(%rules_hash)) { |
|
$result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&'; |
|
} |
|
$result =~ s/\&$//; |
|
$result .= ':'; |
|
if (@rules_order > 0) { |
|
foreach my $item (@rules_order) { |
|
$result .= &escape($item).'&'; |
|
} |
|
} |
|
$result =~ s/\&$//; |
|
&Reply($client,\$result,$userinput); |
|
} else { |
|
&Reply($client,"error\n", $userinput); |
|
} |
|
} else { |
|
&Failure($client,"unknown_cmd\n",$userinput); |
|
} |
|
} |
|
®ister_handler("instidrules",\&get_institutional_id_rules,0,1,0); |
|
|
|
sub get_institutional_selfcreate_rules { |
|
my ($cmd, $tail, $client) = @_; |
|
my $userinput = "$cmd:$tail"; |
|
my $dom = &unescape($tail); |
|
my (%rules_hash,@rules_order); |
|
my $outcome; |
|
eval { |
|
local($SIG{__DIE__})='DEFAULT'; |
|
$outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order); |
|
}; |
|
if (!$@) { |
|
if ($outcome eq 'ok') { |
|
my $result; |
|
foreach my $key (keys(%rules_hash)) { |
|
$result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&'; |
|
} |
|
$result =~ s/\&$//; |
|
$result .= ':'; |
|
if (@rules_order > 0) { |
|
foreach my $item (@rules_order) { |
|
$result .= &escape($item).'&'; |
|
} |
|
} |
|
$result =~ s/\&$//; |
|
&Reply($client,\$result,$userinput); |
|
} else { |
|
&Reply($client,"error\n", $userinput); |
|
} |
|
} else { |
|
&Failure($client,"unknown_cmd\n",$userinput); |
|
} |
|
} |
|
®ister_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0); |
|
|
|
|
|
sub institutional_username_check { |
|
my ($cmd, $tail, $client) = @_; |
|
my $userinput = "$cmd:$tail"; |
|
my %rulecheck; |
|
my $outcome; |
|
my ($udom,$uname,@rules) = split(/:/,$tail); |
|
$udom = &unescape($udom); |
|
$uname = &unescape($uname); |
|
@rules = map {&unescape($_);} (@rules); |
|
eval { |
|
local($SIG{__DIE__})='DEFAULT'; |
|
$outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck); |
|
}; |
|
if (!$@) { |
|
if ($outcome eq 'ok') { |
|
my $result=''; |
|
foreach my $key (keys(%rulecheck)) { |
|
$result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&'; |
|
} |
|
&Reply($client,\$result,$userinput); |
|
} else { |
|
&Reply($client,"error\n", $userinput); |
|
} |
|
} else { |
|
&Failure($client,"unknown_cmd\n",$userinput); |
|
} |
|
} |
|
®ister_handler("instrulecheck",\&institutional_username_check,0,1,0); |
|
|
|
sub institutional_id_check { |
|
my ($cmd, $tail, $client) = @_; |
|
my $userinput = "$cmd:$tail"; |
|
my %rulecheck; |
|
my $outcome; |
|
my ($udom,$id,@rules) = split(/:/,$tail); |
|
$udom = &unescape($udom); |
|
$id = &unescape($id); |
|
@rules = map {&unescape($_);} (@rules); |
|
eval { |
|
local($SIG{__DIE__})='DEFAULT'; |
|
$outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck); |
|
}; |
|
if (!$@) { |
|
if ($outcome eq 'ok') { |
|
my $result=''; |
|
foreach my $key (keys(%rulecheck)) { |
|
$result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&'; |
|
} |
|
&Reply($client,\$result,$userinput); |
|
} else { |
|
&Reply($client,"error\n", $userinput); |
|
} |
|
} else { |
|
&Failure($client,"unknown_cmd\n",$userinput); |
|
} |
|
} |
|
®ister_handler("instidrulecheck",\&institutional_id_check,0,1,0); |
|
|
|
sub institutional_selfcreate_check { |
|
my ($cmd, $tail, $client) = @_; |
|
my $userinput = "$cmd:$tail"; |
|
my %rulecheck; |
|
my $outcome; |
|
my ($udom,$email,@rules) = split(/:/,$tail); |
|
$udom = &unescape($udom); |
|
$email = &unescape($email); |
|
@rules = map {&unescape($_);} (@rules); |
|
eval { |
|
local($SIG{__DIE__})='DEFAULT'; |
|
$outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck); |
|
}; |
|
if (!$@) { |
|
if ($outcome eq 'ok') { |
|
my $result=''; |
|
foreach my $key (keys(%rulecheck)) { |
|
$result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&'; |
|
} |
|
&Reply($client,\$result,$userinput); |
|
} else { |
|
&Reply($client,"error\n", $userinput); |
|
} |
|
} else { |
|
&Failure($client,"unknown_cmd\n",$userinput); |
|
} |
|
} |
|
®ister_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0); |
|
|
|
# Get domain specific conditions for import of student photographs to a course |
|
# |
|
# Retrieves information from photo_permission subroutine in localenroll. |
|
# Returns outcome (ok) if no processing errors, and whether course owner is |
|
# required to accept conditions of use (yes/no). |
|
# |
|
# |
|
sub photo_permission_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
my $userinput = "$cmd:$tail"; |
|
my $cdom = $tail; |
|
my ($perm_reqd,$conditions); |
|
my $outcome; |
|
eval { |
|
local($SIG{__DIE__})='DEFAULT'; |
|
$outcome = &localenroll::photo_permission($cdom,\$perm_reqd, |
|
\$conditions); |
|
}; |
|
if (!$@) { |
|
&Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n", |
|
$userinput); |
|
} else { |
|
&Failure($client,"unknown_cmd\n",$userinput); |
|
} |
|
return 1; |
|
} |
|
®ister_handler("autophotopermission",\&photo_permission_handler,0,1,0); |
|
|
|
# |
|
# Checks if student photo is available for a user in the domain, in the user's |
|
# directory (in /userfiles/internal/studentphoto.jpg). |
|
# Uses localstudentphoto:fetch() to ensure there is an up to date copy of |
|
# the student's photo. |
|
|
|
sub photo_check_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
my $userinput = "$cmd:$tail"; |
|
my ($udom,$uname,$pid) = split(/:/,$tail); |
|
$udom = &unescape($udom); |
|
$uname = &unescape($uname); |
|
$pid = &unescape($pid); |
|
my $path=&propath($udom,$uname).'/userfiles/internal/'; |
|
if (!-e $path) { |
|
&mkpath($path); |
|
} |
|
my $response; |
|
my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response); |
|
$result .= ':'.$response; |
|
&Reply($client, &escape($result)."\n",$userinput); |
|
return 1; |
|
} |
|
®ister_handler("autophotocheck",\&photo_check_handler,0,1,0); |
|
|
|
# |
|
# Retrieve information from localenroll about whether to provide a button |
|
# for users who have enbled import of student photos to initiate an |
|
# update of photo files for registered students. Also include |
|
# comment to display alongside button. |
|
|
|
sub photo_choice_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
my $userinput = "$cmd:$tail"; |
|
my $cdom = &unescape($tail); |
|
my ($update,$comment); |
|
eval { |
|
local($SIG{__DIE__})='DEFAULT'; |
|
($update,$comment) = &localenroll::manager_photo_update($cdom); |
|
}; |
|
if (!$@) { |
|
&Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput); |
|
} else { |
|
&Failure($client,"unknown_cmd\n",$userinput); |
|
} |
|
return 1; |
|
} |
|
®ister_handler("autophotochoice",\&photo_choice_handler,0,1,0); |
|
|
|
# |
|
# Gets a student's photo to exist (in the correct image type) in the user's |
|
# directory. |
|
# Formal Parameters: |
|
# $cmd - The command request that got us dispatched. |
|
# $tail - A colon separated set of words that will be split into: |
|
# $domain - student's domain |
|
# $uname - student username |
|
# $type - image type desired |
|
# $client - The socket open on the client. |
|
# Returns: |
|
# 1 - continue processing. |
|
|
|
sub student_photo_handler { |
|
my ($cmd, $tail, $client) = @_; |
|
my ($domain,$uname,$ext,$type) = split(/:/, $tail); |
|
|
|
my $path=&propath($domain,$uname). '/userfiles/internal/'; |
|
my $filename = 'studentphoto.'.$ext; |
|
if ($type eq 'thumbnail') { |
|
$filename = 'studentphoto_tn.'.$ext; |
|
} |
|
if (-e $path.$filename) { |
|
&Reply($client,"ok\n","$cmd:$tail"); |
|
return 1; |
|
} |
|
&mkpath($path); |
|
my $file; |
|
if ($type eq 'thumbnail') { |
|
eval { |
|
local($SIG{__DIE__})='DEFAULT'; |
|
$file=&localstudentphoto::fetch_thumbnail($domain,$uname); |
|
}; |
|
} else { |
|
$file=&localstudentphoto::fetch($domain,$uname); |
|
} |
|
if (!$file) { |
|
&Failure($client,"unavailable\n","$cmd:$tail"); |
|
return 1; |
|
} |
|
if (!-e $path.$filename) { &convert_photo($file,$path.$filename); } |
|
if (-e $path.$filename) { |
|
&Reply($client,"ok\n","$cmd:$tail"); |
|
return 1; |
|
} |
|
&Failure($client,"unable_to_convert\n","$cmd:$tail"); |
|
return 1; |
|
} |
|
®ister_handler("studentphoto", \&student_photo_handler, 0, 1, 0); |
|
|
|
sub inst_usertypes_handler { |
|
my ($cmd, $domain, $client) = @_; |
|
my $res; |
|
my $userinput = $cmd.":".$domain; # For logging purposes. |
|
my (%typeshash,@order,$result); |
|
eval { |
|
local($SIG{__DIE__})='DEFAULT'; |
|
$result=&localenroll::inst_usertypes($domain,\%typeshash,\@order); |
|
}; |
|
if ($result eq 'ok') { |
|
if (keys(%typeshash) > 0) { |
|
foreach my $key (keys(%typeshash)) { |
|
$res.=&escape($key).'='.&escape($typeshash{$key}).'&'; |
|
} |
|
} |
|
$res=~s/\&$//; |
|
$res .= ':'; |
|
if (@order > 0) { |
|
foreach my $item (@order) { |
|
$res .= &escape($item).'&'; |
|
} |
|
} |
|
$res=~s/\&$//; |
|
} |
|
&Reply($client, \$res, $userinput); |
|
return 1; |
|
} |
|
®ister_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0); |
|
|
|
# mkpath makes all directories for a file, expects an absolute path with a |
|
# file or a trailing / if just a dir is passed |
|
# returns 1 on success 0 on failure |
|
sub mkpath { |
|
my ($file)=@_; |
|
my @parts=split(/\//,$file,-1); |
|
my $now=$parts[0].'/'.$parts[1].'/'.$parts[2]; |
|
for (my $i=3;$i<= ($#parts-1);$i++) { |
|
$now.='/'.$parts[$i]; |
|
if (!-e $now) { |
|
if (!mkdir($now,0770)) { return 0; } |
|
} |
|
} |
|
return 1; |
|
} |
|
|
|
#--------------------------------------------------------------- |
|
# |
|
# Getting, decoding and dispatching requests: |
|
# |
|
# |
|
# Get a Request: |
|
# Gets a Request message from the client. The transaction |
|
# is defined as a 'line' of text. We remove the new line |
|
# from the text line. |
|
# |
|
sub get_request { |
|
my $input = <$client>; |
|
chomp($input); |
|
|
|
&Debug("get_request: Request = $input\n"); |
|
|
|
&status('Processing '.$clientname.':'.$input); |
|
|
|
return $input; |
|
} |
|
#--------------------------------------------------------------- |
|
# |
|
# Process a request. This sub should shrink as each action |
|
# gets farmed out into a separat sub that is registered |
|
# with the dispatch hash. |
|
# |
|
# Parameters: |
|
# user_input - The request received from the client (lonc). |
|
# Returns: |
|
# true to keep processing, false if caller should exit. |
|
# |
|
sub process_request { |
|
my ($userinput) = @_; # Easier for now to break style than to |
|
# fix all the userinput -> user_input. |
|
my $wasenc = 0; # True if request was encrypted. |
|
# ------------------------------------------------------------ See if encrypted |
|
# for command |
|
# sethost:<server> |
|
# <command>:<args> |
|
# we just send it to the processor |
|
# for |
|
# sethost:<server>:<command>:<args> |
|
# we do the implict set host and then do the command |
|
if ($userinput =~ /^sethost:/) { |
|
(my $cmd,my $newid,$userinput) = split(':',$userinput,3); |
|
if (defined($userinput)) { |
|
&sethost("$cmd:$newid"); |
|
} else { |
|
$userinput = "$cmd:$newid"; |
|
} |
|
} |
|
|
|
if ($userinput =~ /^enc/) { |
|
$userinput = decipher($userinput); |
|
$wasenc=1; |
|
if(!$userinput) { # Cipher not defined. |
|
&Failure($client, "error: Encrypted data without negotated key\n"); |
|
return 0; |
|
} |
|
} |
|
Debug("process_request: $userinput\n"); |
|
|
|
# |
|
# The 'correct way' to add a command to lond is now to |
|
# write a sub to execute it and Add it to the command dispatch |
|
# hash via a call to register_handler.. The comments to that |
|
# sub should give you enough to go on to show how to do this |
|
# along with the examples that are building up as this code |
|
# is getting refactored. Until all branches of the |
|
# if/elseif monster below have been factored out into |
|
# separate procesor subs, if the dispatch hash is missing |
|
# the command keyword, we will fall through to the remainder |
|
# of the if/else chain below in order to keep this thing in |
|
# working order throughout the transmogrification. |
|
|
|
my ($command, $tail) = split(/:/, $userinput, 2); |
|
chomp($command); |
|
chomp($tail); |
|
$tail =~ s/(\r)//; # This helps people debugging with e.g. telnet. |
|
$command =~ s/(\r)//; # And this too for parameterless commands. |
|
if(!$tail) { |
|
$tail =""; # defined but blank. |
|
} |
|
|
|
&Debug("Command received: $command, encoded = $wasenc"); |
|
|
|
if(defined $Dispatcher{$command}) { |
|
|
|
my $dispatch_info = $Dispatcher{$command}; |
|
my $handler = $$dispatch_info[0]; |
|
my $need_encode = $$dispatch_info[1]; |
|
my $client_types = $$dispatch_info[2]; |
|
Debug("Matched dispatch hash: mustencode: $need_encode " |
|
."ClientType $client_types"); |
|
|
|
# Validate the request: |
|
|
|
my $ok = 1; |
|
my $requesterprivs = 0; |
|
if(&isClient()) { |
|
$requesterprivs |= $CLIENT_OK; |
|
} |
|
if(&isManager()) { |
|
$requesterprivs |= $MANAGER_OK; |
|
} |
|
if($need_encode && (!$wasenc)) { |
|
Debug("Must encode but wasn't: $need_encode $wasenc"); |
|
$ok = 0; |
|
} |
|
if(($client_types & $requesterprivs) == 0) { |
|
Debug("Client not privileged to do this operation"); |
|
$ok = 0; |
|
} |
|
|
|
if($ok) { |
|
Debug("Dispatching to handler $command $tail"); |
|
my $keep_going = &$handler($command, $tail, $client); |
|
return $keep_going; |
|
} else { |
|
Debug("Refusing to dispatch because client did not match requirements"); |
|
Failure($client, "refused\n", $userinput); |
|
return 1; |
|
} |
|
|
|
} |
|
|
|
print $client "unknown_cmd\n"; |
|
# -------------------------------------------------------------------- complete |
|
Debug("process_request - returning 1"); |
|
return 1; |
|
} |
|
# |
|
# Decipher encoded traffic |
|
# Parameters: |
|
# input - Encoded data. |
|
# Returns: |
|
# Decoded data or undef if encryption key was not yet negotiated. |
|
# Implicit input: |
|
# cipher - This global holds the negotiated encryption key. |
|
# |
|
sub decipher { |
|
my ($input) = @_; |
|
my $output = ''; |
|
|
|
|
|
if($cipher) { |
|
my($enc, $enclength, $encinput) = split(/:/, $input); |
|
for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) { |
|
$output .= |
|
$cipher->decrypt(pack("H16", substr($encinput, $encidx, 16))); |
|
} |
|
return substr($output, 0, $enclength); |
|
} else { |
|
return undef; |
|
} |
|
} |
|
|
|
# |
|
# Register a command processor. This function is invoked to register a sub |
|
# to process a request. Once registered, the ProcessRequest sub can automatically |
|
# dispatch requests to an appropriate sub, and do the top level validity checking |
|
# as well: |
|
# - Is the keyword recognized. |
|
# - Is the proper client type attempting the request. |
|
# - Is the request encrypted if it has to be. |
|
# Parameters: |
|
# $request_name - Name of the request being registered. |
|
# This is the command request that will match |
|
# against the hash keywords to lookup the information |
|
# associated with the dispatch information. |
|
# $procedure - Reference to a sub to call to process the request. |
|
# All subs get called as follows: |
|
# Procedure($cmd, $tail, $replyfd, $key) |
|
# $cmd - the actual keyword that invoked us. |
|
# $tail - the tail of the request that invoked us. |
|
# $replyfd- File descriptor connected to the client |
|
# $must_encode - True if the request must be encoded to be good. |
|
# $client_ok - True if it's ok for a client to request this. |
|
# $manager_ok - True if it's ok for a manager to request this. |
|
# Side effects: |
|
# - On success, the Dispatcher hash has an entry added for the key $RequestName |
|
# - On failure, the program will die as it's a bad internal bug to try to |
|
# register a duplicate command handler. |
|
# |
|
sub register_handler { |
|
my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_; |
|
|
|
# Don't allow duplication# |
|
|
|
if (defined $Dispatcher{$request_name}) { |
|
die "Attempting to define a duplicate request handler for $request_name\n"; |
|
} |
|
# Build the client type mask: |
|
|
|
my $client_type_mask = 0; |
|
if($client_ok) { |
|
$client_type_mask |= $CLIENT_OK; |
|
} |
|
if($manager_ok) { |
|
$client_type_mask |= $MANAGER_OK; |
|
} |
|
|
|
# Enter the hash: |
|
|
|
my @entry = ($procedure, $must_encode, $client_type_mask); |
|
|
|
$Dispatcher{$request_name} = \@entry; |
|
|
|
} |
|
|
|
|
|
#------------------------------------------------------------------ |
|
|
|
|
|
|
|
|
|
# |
|
# Convert an error return code from lcpasswd to a string value. |
|
# |
|
sub lcpasswdstrerror { |
|
my $ErrorCode = shift; |
|
if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) { |
|
return "lcpasswd Unrecognized error return value ".$ErrorCode; |
|
} else { |
|
return $passwderrors[$ErrorCode]; |
|
} |
|
} |
|
|
|
# |
|
# Convert an error return code from lcuseradd to a string value: |
|
# |
|
sub lcuseraddstrerror { |
|
my $ErrorCode = shift; |
|
if(($ErrorCode < 0) || ($ErrorCode > $lastadderror)) { |
|
return "lcuseradd - Unrecognized error code: ".$ErrorCode; |
|
} else { |
|
return $adderrors[$ErrorCode]; |
|
} |
|
} |
|
|
# grabs exception and records it to log before exiting |
# grabs exception and records it to log before exiting |
sub catchexception { |
sub catchexception { |
my ($error)=@_; |
my ($error)=@_; |
$SIG{'QUIT'}='DEFAULT'; |
$SIG{'QUIT'}='DEFAULT'; |
$SIG{__DIE__}='DEFAULT'; |
$SIG{__DIE__}='DEFAULT'; |
&logthis("<font color=red>CRITICAL: " |
&status("Catching exception"); |
."ABNORMAL EXIT. Child $$ for server $wasserver died through " |
&logthis("<font color='red'>CRITICAL: " |
|
."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through " |
."a crash with this error msg->[$error]</font>"); |
."a crash with this error msg->[$error]</font>"); |
&logthis('Famous last words: '.$status.' - '.$lastlog); |
&logthis('Famous last words: '.$status.' - '.$lastlog); |
if ($client) { print $client "error: $error\n"; } |
if ($client) { print $client "error: $error\n"; } |
$server->close(); |
$server->close(); |
die($error); |
die($error); |
} |
} |
|
|
sub timeout { |
sub timeout { |
&logthis("<font color=ref>CRITICAL: TIME OUT ".$$."</font>"); |
&status("Handling Timeout"); |
|
&logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>"); |
&catchexception('Timeout'); |
&catchexception('Timeout'); |
} |
} |
# -------------------------------- Set signal handlers to record abnormal exits |
# -------------------------------- Set signal handlers to record abnormal exits |
|
|
|
|
$SIG{'QUIT'}=\&catchexception; |
$SIG{'QUIT'}=\&catchexception; |
$SIG{__DIE__}=\&catchexception; |
$SIG{__DIE__}=\&catchexception; |
|
|
# ------------------------------------ Read httpd access.conf and get variables |
# ---------------------------------- Read loncapa_apache.conf and loncapa.conf |
|
&status("Read loncapa.conf and loncapa_apache.conf"); |
open (CONFIG,"/etc/httpd/conf/access.conf") || die "Can't read access.conf"; |
my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf'); |
|
%perlvar=%{$perlvarref}; |
while ($configline=<CONFIG>) { |
undef $perlvarref; |
if ($configline =~ /PerlSetVar/) { |
|
my ($dummy,$varname,$varvalue)=split(/\s+/,$configline); |
|
chomp($varvalue); |
|
$perlvar{$varname}=$varvalue; |
|
} |
|
} |
|
close(CONFIG); |
|
|
|
# ----------------------------- Make sure this process is running from user=www |
# ----------------------------- Make sure this process is running from user=www |
my $wwwid=getpwnam('www'); |
my $wwwid=getpwnam('www'); |
if ($wwwid!=$<) { |
if ($wwwid!=$<) { |
$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}"; |
my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}"; |
$subj="LON: $perlvar{'lonHostID'} User ID mismatch"; |
my $subj="LON: $currenthostid User ID mismatch"; |
system("echo 'User ID mismatch. lond must be run as user www.' |\ |
system("echo 'User ID mismatch. lond must be run as user www.' |\ |
mailto $emailto -s '$subj' > /dev/null"); |
mailto $emailto -s '$subj' > /dev/null"); |
exit 1; |
exit 1; |
Line 133 if (-e $pidfile) {
|
Line 5559 if (-e $pidfile) {
|
if (kill 0 => $pide) { die "already running"; } |
if (kill 0 => $pide) { die "already running"; } |
} |
} |
|
|
$PREFORK=4; # number of children to maintain, at least four spare |
|
|
|
# ------------------------------------------------------------- Read hosts file |
# ------------------------------------------------------------- Read hosts file |
|
|
open (CONFIG,"$perlvar{'lonTabDir'}/hosts.tab") || die "Can't read host file"; |
|
|
|
while ($configline=<CONFIG>) { |
|
my ($id,$domain,$role,$name,$ip)=split(/:/,$configline); |
|
chomp($ip); $ip=~s/\D+$//; |
|
$hostid{$ip}=$id; |
|
if ($id eq $perlvar{'lonHostID'}) { $thisserver=$name; } |
|
$PREFORK++; |
|
} |
|
close(CONFIG); |
|
|
|
# establish SERVER socket, bind and listen. |
# establish SERVER socket, bind and listen. |
$server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'}, |
$server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'}, |
Line 160 $server = IO::Socket::INET->new(LocalPor
|
Line 5575 $server = IO::Socket::INET->new(LocalPor
|
|
|
# global variables |
# global variables |
|
|
$MAX_CLIENTS_PER_CHILD = 50; # number of clients each child should |
my %children = (); # keys are current child process IDs |
# process |
|
%children = (); # keys are current child process IDs |
|
$children = 0; # current number of children |
|
|
|
sub REAPER { # takes care of dead children |
sub REAPER { # takes care of dead children |
$SIG{CHLD} = \&REAPER; |
$SIG{CHLD} = \&REAPER; |
my $pid = wait; |
&status("Handling child death"); |
if (defined($children{$pid})) { |
my $pid; |
&logthis("Child $pid died"); |
do { |
$children --; |
$pid = waitpid(-1,&WNOHANG()); |
delete $children{$pid}; |
if (defined($children{$pid})) { |
} else { |
&logthis("Child $pid died"); |
&logthis("Unknown Child $pid died"); |
delete($children{$pid}); |
|
} elsif ($pid > 0) { |
|
&logthis("Unknown Child $pid died"); |
|
} |
|
} while ( $pid > 0 ); |
|
foreach my $child (keys(%children)) { |
|
$pid = waitpid($child,&WNOHANG()); |
|
if ($pid > 0) { |
|
&logthis("Child $child - $pid looks like we missed it's death"); |
|
delete($children{$pid}); |
|
} |
} |
} |
|
&status("Finished Handling child death"); |
} |
} |
|
|
sub HUNTSMAN { # signal handler for SIGINT |
sub HUNTSMAN { # signal handler for SIGINT |
|
&status("Killing children (INT)"); |
local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children |
local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children |
kill 'INT' => keys %children; |
kill 'INT' => keys %children; |
&logthis("Free socket: ".shutdown($server,2)); # free up socket |
&logthis("Free socket: ".shutdown($server,2)); # free up socket |
my $execdir=$perlvar{'lonDaemons'}; |
my $execdir=$perlvar{'lonDaemons'}; |
unlink("$execdir/logs/lond.pid"); |
unlink("$execdir/logs/lond.pid"); |
&logthis("<font color=red>CRITICAL: Shutting down</font>"); |
&logthis("<font color='red'>CRITICAL: Shutting down</font>"); |
|
&status("Done killing children"); |
exit; # clean up with dignity |
exit; # clean up with dignity |
} |
} |
|
|
sub HUPSMAN { # signal handler for SIGHUP |
sub HUPSMAN { # signal handler for SIGHUP |
local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children |
local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children |
|
&status("Killing children for restart (HUP)"); |
kill 'INT' => keys %children; |
kill 'INT' => keys %children; |
&logthis("Free socket: ".shutdown($server,2)); # free up socket |
&logthis("Free socket: ".shutdown($server,2)); # free up socket |
&logthis("<font color=red>CRITICAL: Restarting</font>"); |
&logthis("<font color='red'>CRITICAL: Restarting</font>"); |
unlink("$execdir/logs/lond.pid"); |
|
my $execdir=$perlvar{'lonDaemons'}; |
my $execdir=$perlvar{'lonDaemons'}; |
|
unlink("$execdir/logs/lond.pid"); |
|
&status("Restarting self (HUP)"); |
exec("$execdir/lond"); # here we go again |
exec("$execdir/lond"); # here we go again |
} |
} |
|
|
|
# |
|
# Reload the Apache daemon's state. |
|
# This is done by invoking /home/httpd/perl/apachereload |
|
# a setuid perl script that can be root for us to do this job. |
|
# |
|
sub ReloadApache { |
|
my $execdir = $perlvar{'lonDaemons'}; |
|
my $script = $execdir."/apachereload"; |
|
system($script); |
|
} |
|
|
|
# |
|
# Called in response to a USR2 signal. |
|
# - Reread hosts.tab |
|
# - All children connected to hosts that were removed from hosts.tab |
|
# are killed via SIGINT |
|
# - All children connected to previously existing hosts are sent SIGUSR1 |
|
# - Our internal hosts hash is updated to reflect the new contents of |
|
# hosts.tab causing connections from hosts added to hosts.tab to |
|
# now be honored. |
|
# |
|
sub UpdateHosts { |
|
&status("Reload hosts.tab"); |
|
logthis('<font color="blue"> Updating connections </font>'); |
|
# |
|
# The %children hash has the set of IP's we currently have children |
|
# on. These need to be matched against records in the hosts.tab |
|
# Any ip's no longer in the table get killed off they correspond to |
|
# either dropped or changed hosts. Note that the re-read of the table |
|
# will take care of new and changed hosts as connections come into being. |
|
|
|
&Apache::lonnet::reset_hosts_info(); |
|
|
|
foreach my $child (keys(%children)) { |
|
my $childip = $children{$child}; |
|
if ($childip ne '127.0.0.1' |
|
&& !defined(&Apache::lonnet::get_hosts_from_ip($childip))) { |
|
logthis('<font color="blue"> UpdateHosts killing child ' |
|
." $child for ip $childip </font>"); |
|
kill('INT', $child); |
|
} else { |
|
logthis('<font color="green"> keeping child for ip ' |
|
." $childip (pid=$child) </font>"); |
|
} |
|
} |
|
ReloadApache; |
|
&status("Finished reloading hosts.tab"); |
|
} |
|
|
|
|
sub checkchildren { |
sub checkchildren { |
|
&status("Checking on the children (sending signals)"); |
&initnewstatus(); |
&initnewstatus(); |
&logstatus(); |
&logstatus(); |
&logthis('Going to check on the children'); |
&logthis('Going to check on the children'); |
$docdir=$perlvar{'lonDocRoot'}; |
my $docdir=$perlvar{'lonDocRoot'}; |
foreach (sort keys %children) { |
foreach (sort keys %children) { |
sleep 1; |
#sleep 1; |
unless (kill 'USR1' => $_) { |
unless (kill 'USR1' => $_) { |
&logthis ('Child '.$_.' is dead'); |
&logthis ('Child '.$_.' is dead'); |
&logstatus($$.' is dead'); |
&logstatus($$.' is dead'); |
|
delete($children{$_}); |
} |
} |
} |
} |
sleep 5; |
sleep 5; |
|
$SIG{ALRM} = sub { Debug("timeout"); |
|
die "timeout"; }; |
|
$SIG{__DIE__} = 'DEFAULT'; |
|
&status("Checking on the children (waiting for reports)"); |
foreach (sort keys %children) { |
foreach (sort keys %children) { |
unless (-e "$docdir/lon-status/londchld/$_.txt") { |
unless (-e "$docdir/lon-status/londchld/$_.txt") { |
|
eval { |
|
alarm(300); |
&logthis('Child '.$_.' did not respond'); |
&logthis('Child '.$_.' did not respond'); |
kill 9 => $_; |
kill 9 => $_; |
$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}"; |
#$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}"; |
$subj="LON: $perlvar{'lonHostID'} killed lond process $_"; |
#$subj="LON: $currenthostid killed lond process $_"; |
my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`; |
#my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`; |
$execdir=$perlvar{'lonDaemons'}; |
#$execdir=$perlvar{'lonDaemons'}; |
$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_` |
#$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`; |
|
delete($children{$_}); |
|
alarm(0); |
|
} |
} |
} |
} |
} |
|
$SIG{ALRM} = 'DEFAULT'; |
|
$SIG{__DIE__} = \&catchexception; |
|
&status("Finished checking children"); |
|
&logthis('Finished Checking children'); |
} |
} |
|
|
# --------------------------------------------------------------------- Logging |
# --------------------------------------------------------------------- Logging |
Line 235 sub logthis {
|
Line 5727 sub logthis {
|
print $fh "$local ($$): $message\n"; |
print $fh "$local ($$): $message\n"; |
} |
} |
|
|
|
# ------------------------- Conditional log if $DEBUG true. |
|
sub Debug { |
|
my $message = shift; |
|
if($DEBUG) { |
|
&logthis($message); |
|
} |
|
} |
|
|
|
# |
|
# Sub to do replies to client.. this gives a hook for some |
|
# debug tracing too: |
|
# Parameters: |
|
# fd - File open on client. |
|
# reply - Text to send to client. |
|
# request - Original request from client. |
|
# |
|
sub Reply { |
|
my ($fd, $reply, $request) = @_; |
|
if (ref($reply)) { |
|
print $fd $$reply; |
|
print $fd "\n"; |
|
if ($DEBUG) { Debug("Request was $request Reply was $$reply"); } |
|
} else { |
|
print $fd $reply; |
|
if ($DEBUG) { Debug("Request was $request Reply was $reply"); } |
|
} |
|
$Transactions++; |
|
} |
|
|
|
|
|
# |
|
# Sub to report a failure. |
|
# This function: |
|
# - Increments the failure statistic counters. |
|
# - Invokes Reply to send the error message to the client. |
|
# Parameters: |
|
# fd - File descriptor open on the client |
|
# reply - Reply text to emit. |
|
# request - The original request message (used by Reply |
|
# to debug if that's enabled. |
|
# Implicit outputs: |
|
# $Failures- The number of failures is incremented. |
|
# Reply (invoked here) sends a message to the |
|
# client: |
|
# |
|
sub Failure { |
|
my $fd = shift; |
|
my $reply = shift; |
|
my $request = shift; |
|
|
|
$Failures++; |
|
Reply($fd, $reply, $request); # That's simple eh? |
|
} |
# ------------------------------------------------------------------ Log status |
# ------------------------------------------------------------------ Log status |
|
|
sub logstatus { |
sub logstatus { |
|
&status("Doing logging"); |
my $docdir=$perlvar{'lonDocRoot'}; |
my $docdir=$perlvar{'lonDocRoot'}; |
{ |
{ |
my $fh=IO::File->new(">>$docdir/lon-status/londstatus.txt"); |
|
print $fh $$."\t".$status."\t".$lastlog."\n"; |
|
$fh->close(); |
|
} |
|
{ |
|
my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt"); |
my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt"); |
print $fh $status."\n".$lastlog."\n".time; |
print $fh $status."\n".$lastlog."\n".time."\n$keymode"; |
$fh->close(); |
$fh->close(); |
} |
} |
|
&status("Finished $$.txt"); |
|
{ |
|
open(LOG,">>$docdir/lon-status/londstatus.txt"); |
|
flock(LOG,LOCK_EX); |
|
print LOG $$."\t".$clientname."\t".$currenthostid."\t" |
|
.$status."\t".$lastlog."\t $keymode\n"; |
|
flock(LOG,LOCK_UN); |
|
close(LOG); |
|
} |
|
&status("Finished logging"); |
} |
} |
|
|
sub initnewstatus { |
sub initnewstatus { |
Line 258 sub initnewstatus {
|
Line 5809 sub initnewstatus {
|
my $local=localtime($now); |
my $local=localtime($now); |
print $fh "LOND status $local - parent $$\n\n"; |
print $fh "LOND status $local - parent $$\n\n"; |
opendir(DIR,"$docdir/lon-status/londchld"); |
opendir(DIR,"$docdir/lon-status/londchld"); |
while ($filename=readdir(DIR)) { |
while (my $filename=readdir(DIR)) { |
unlink("$docdir/lon-status/londchld/$filename"); |
unlink("$docdir/lon-status/londchld/$filename"); |
} |
} |
closedir(DIR); |
closedir(DIR); |
Line 271 sub status {
|
Line 5822 sub status {
|
my $now=time; |
my $now=time; |
my $local=localtime($now); |
my $local=localtime($now); |
$status=$local.': '.$what; |
$status=$local.': '.$what; |
} |
$0='lond: '.$what.' '.$local; |
|
|
# -------------------------------------------------------- Escape Special Chars |
|
|
|
sub escape { |
|
my $str=shift; |
|
$str =~ s/(\W)/"%".unpack('H2',$1)/eg; |
|
return $str; |
|
} |
|
|
|
# ----------------------------------------------------- Un-Escape Special Chars |
|
|
|
sub unescape { |
|
my $str=shift; |
|
$str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; |
|
return $str; |
|
} |
|
|
|
# ----------------------------------------------------------- Send USR1 to lonc |
|
|
|
sub reconlonc { |
|
my $peerfile=shift; |
|
&logthis("Trying to reconnect for $peerfile"); |
|
my $loncfile="$perlvar{'lonDaemons'}/logs/lonc.pid"; |
|
if (my $fh=IO::File->new("$loncfile")) { |
|
my $loncpid=<$fh>; |
|
chomp($loncpid); |
|
if (kill 0 => $loncpid) { |
|
&logthis("lonc at pid $loncpid responding, sending USR1"); |
|
kill USR1 => $loncpid; |
|
sleep 5; |
|
if (-e "$peerfile") { return; } |
|
&logthis("$peerfile still not there, give it another try"); |
|
sleep 10; |
|
if (-e "$peerfile") { return; } |
|
&logthis( |
|
"<font color=blue>WARNING: $peerfile still not there, giving up</font>"); |
|
} else { |
|
&logthis( |
|
"<font color=red>CRITICAL: " |
|
."lonc at pid $loncpid not responding, giving up</font>"); |
|
} |
|
} else { |
|
&logthis('<font color=red>CRITICAL: lonc not running, giving up</font>'); |
|
} |
|
} |
|
|
|
# -------------------------------------------------- Non-critical communication |
|
|
|
sub subreply { |
|
my ($cmd,$server)=@_; |
|
my $peerfile="$perlvar{'lonSockDir'}/$server"; |
|
my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile", |
|
Type => SOCK_STREAM, |
|
Timeout => 10) |
|
or return "con_lost"; |
|
print $sclient "$cmd\n"; |
|
my $answer=<$sclient>; |
|
chomp($answer); |
|
if (!$answer) { $answer="con_lost"; } |
|
return $answer; |
|
} |
|
|
|
sub reply { |
|
my ($cmd,$server)=@_; |
|
my $answer; |
|
if ($server ne $perlvar{'lonHostID'}) { |
|
$answer=subreply($cmd,$server); |
|
if ($answer eq 'con_lost') { |
|
$answer=subreply("ping",$server); |
|
if ($answer ne $server) { |
|
&logthis("sub reply: answer != server"); |
|
&reconlonc("$perlvar{'lonSockDir'}/$server"); |
|
} |
|
$answer=subreply($cmd,$server); |
|
} |
|
} else { |
|
$answer='self_reply'; |
|
} |
|
return $answer; |
|
} |
} |
|
|
# -------------------------------------------------------------- Talk to lonsql |
# -------------------------------------------------------------- Talk to lonsql |
|
|
sub sqlreply { |
sub sql_reply { |
my ($cmd)=@_; |
my ($cmd)=@_; |
my $answer=subsqlreply($cmd); |
my $answer=&sub_sql_reply($cmd); |
if ($answer eq 'con_lost') { $answer=subsqlreply($cmd); } |
if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); } |
return $answer; |
return $answer; |
} |
} |
|
|
sub subsqlreply { |
sub sub_sql_reply { |
my ($cmd)=@_; |
my ($cmd)=@_; |
my $unixsock="mysqlsock"; |
my $unixsock="mysqlsock"; |
my $peerfile="$perlvar{'lonSockDir'}/$unixsock"; |
my $peerfile="$perlvar{'lonSockDir'}/$unixsock"; |
Line 370 sub subsqlreply {
|
Line 5842 sub subsqlreply {
|
Type => SOCK_STREAM, |
Type => SOCK_STREAM, |
Timeout => 10) |
Timeout => 10) |
or return "con_lost"; |
or return "con_lost"; |
print $sclient "$cmd\n"; |
print $sclient "$cmd:$currentdomainid\n"; |
my $answer=<$sclient>; |
my $answer=<$sclient>; |
chomp($answer); |
chomp($answer); |
if (!$answer) { $answer="con_lost"; } |
if (!$answer) { $answer="con_lost"; } |
return $answer; |
return $answer; |
} |
} |
|
|
# -------------------------------------------- Return path to profile directory |
|
|
|
sub propath { |
|
my ($udom,$uname)=@_; |
|
$udom=~s/\W//g; |
|
$uname=~s/\W//g; |
|
my $subdir=$uname.'__'; |
|
$subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/; |
|
my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname"; |
|
return $proname; |
|
} |
|
|
|
# --------------------------------------- Is this the home server of an author? |
# --------------------------------------- Is this the home server of an author? |
|
|
sub ishome { |
sub ishome { |
Line 406 sub ishome {
|
Line 5866 sub ishome {
|
# ======================================================= Continue main program |
# ======================================================= Continue main program |
# ---------------------------------------------------- Fork once and dissociate |
# ---------------------------------------------------- Fork once and dissociate |
|
|
$fpid=fork; |
my $fpid=fork; |
exit if $fpid; |
exit if $fpid; |
die "Couldn't fork: $!" unless defined ($fpid); |
die "Couldn't fork: $!" unless defined ($fpid); |
|
|
Line 414 POSIX::setsid() or die "Can't start new
|
Line 5874 POSIX::setsid() or die "Can't start new
|
|
|
# ------------------------------------------------------- Write our PID on disk |
# ------------------------------------------------------- Write our PID on disk |
|
|
$execdir=$perlvar{'lonDaemons'}; |
my $execdir=$perlvar{'lonDaemons'}; |
open (PIDSAVE,">$execdir/logs/lond.pid"); |
open (PIDSAVE,">$execdir/logs/lond.pid"); |
print PIDSAVE "$$\n"; |
print PIDSAVE "$$\n"; |
close(PIDSAVE); |
close(PIDSAVE); |
&logthis("<font color=red>CRITICAL: ---------- Starting ----------</font>"); |
&logthis("<font color='red'>CRITICAL: ---------- Starting ----------</font>"); |
&status('Starting'); |
&status('Starting'); |
|
|
# ------------------------------------------------------- Now we are on our own |
|
|
|
# Fork off our children. |
|
for (1 .. $PREFORK) { |
|
make_new_child(); |
|
} |
|
|
|
# ----------------------------------------------------- Install signal handlers |
# ----------------------------------------------------- Install signal handlers |
|
|
&status('Forked children'); |
|
|
|
$SIG{CHLD} = \&REAPER; |
$SIG{CHLD} = \&REAPER; |
$SIG{INT} = $SIG{TERM} = \&HUNTSMAN; |
$SIG{INT} = $SIG{TERM} = \&HUNTSMAN; |
$SIG{HUP} = \&HUPSMAN; |
$SIG{HUP} = \&HUPSMAN; |
$SIG{USR1} = \&checkchildren; |
$SIG{USR1} = \&checkchildren; |
|
$SIG{USR2} = \&UpdateHosts; |
|
|
|
# Read the host hashes: |
|
&Apache::lonnet::load_hosts_tab(); |
|
|
|
my $dist=`$perlvar{'lonDaemons'}/distprobe`; |
|
|
|
# -------------------------------------------------------------- |
|
# Accept connections. When a connection comes in, it is validated |
|
# and if good, a child process is created to process transactions |
|
# along the connection. |
|
|
# And maintain the population. |
|
while (1) { |
while (1) { |
&status('Sleeping'); |
&status('Starting accept'); |
sleep; # wait for a signal (i.e., child's death) |
$client = $server->accept() or next; |
&logthis('Woke up'); |
&status('Accepted '.$client.' off to spawn'); |
&status('Woke up'); |
make_new_child($client); |
for ($i = $children; $i < $PREFORK; $i++) { |
&status('Finished spawning'); |
make_new_child(); # top up the child pool |
|
} |
|
} |
} |
|
|
sub make_new_child { |
sub make_new_child { |
my $pid; |
my $pid; |
my $cipher; |
# my $cipher; # Now global |
my $sigset; |
my $sigset; |
&logthis("Attempting to start child"); |
|
|
$client = shift; |
|
&status('Starting new child '.$client); |
|
&logthis('<font color="green"> Attempting to start child ('.$client. |
|
")</font>"); |
# block signal for fork |
# block signal for fork |
$sigset = POSIX::SigSet->new(SIGINT); |
$sigset = POSIX::SigSet->new(SIGINT); |
sigprocmask(SIG_BLOCK, $sigset) |
sigprocmask(SIG_BLOCK, $sigset) |
or die "Can't block SIGINT for fork: $!\n"; |
or die "Can't block SIGINT for fork: $!\n"; |
|
|
die "fork: $!" unless defined ($pid = fork); |
die "fork: $!" unless defined ($pid = fork); |
|
|
|
$client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of |
|
# connection liveness. |
|
|
|
# |
|
# Figure out who we're talking to so we can record the peer in |
|
# the pid hash. |
|
# |
|
my $caller = getpeername($client); |
|
my ($port,$iaddr); |
|
if (defined($caller) && length($caller) > 0) { |
|
($port,$iaddr)=unpack_sockaddr_in($caller); |
|
} else { |
|
&logthis("Unable to determine who caller was, getpeername returned nothing"); |
|
} |
|
if (defined($iaddr)) { |
|
$clientip = inet_ntoa($iaddr); |
|
Debug("Connected with $clientip"); |
|
} else { |
|
&logthis("Unable to determine clientip"); |
|
$clientip='Unavailable'; |
|
} |
|
|
if ($pid) { |
if ($pid) { |
# Parent records the child's birth and returns. |
# Parent records the child's birth and returns. |
sigprocmask(SIG_UNBLOCK, $sigset) |
sigprocmask(SIG_UNBLOCK, $sigset) |
or die "Can't unblock SIGINT for fork: $!\n"; |
or die "Can't unblock SIGINT for fork: $!\n"; |
$children{$pid} = 1; |
$children{$pid} = $clientip; |
$children++; |
|
&status('Started child '.$pid); |
&status('Started child '.$pid); |
return; |
return; |
} else { |
} else { |
# Child can *not* return from this subroutine. |
# Child can *not* return from this subroutine. |
$SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before |
$SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before |
|
$SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns |
|
#don't get intercepted |
$SIG{USR1}= \&logstatus; |
$SIG{USR1}= \&logstatus; |
$SIG{ALRM}= \&timeout; |
$SIG{ALRM}= \&timeout; |
$lastlog='Forked '; |
$lastlog='Forked '; |
Line 480 sub make_new_child {
|
Line 5969 sub make_new_child {
|
sigprocmask(SIG_UNBLOCK, $sigset) |
sigprocmask(SIG_UNBLOCK, $sigset) |
or die "Can't unblock SIGINT for fork: $!\n"; |
or die "Can't unblock SIGINT for fork: $!\n"; |
|
|
$tmpsnum=0; |
# my $tmpsnum=0; # Now global |
|
#---------------------------------------------------- kerberos 5 initialization |
# handle connections until we've reached $MAX_CLIENTS_PER_CHILD |
&Authen::Krb5::init_context(); |
for ($i=0; $i < $MAX_CLIENTS_PER_CHILD; $i++) { |
unless (($dist eq 'fedora5') || ($dist eq 'fedora4') || |
&status('Idle, waiting for connection'); |
($dist eq 'fedora6') || ($dist eq 'suse9.3')) { |
$client = $server->accept() or last; |
&Authen::Krb5::init_ets(); |
&status('Accepted connection'); |
} |
|
|
|
&status('Accepted connection'); |
# ============================================================================= |
# ============================================================================= |
# do something with the connection |
# do something with the connection |
# ----------------------------------------------------------------------------- |
# ----------------------------------------------------------------------------- |
# see if we know client and check for spoof IP by challenge |
# see if we know client and 'check' for spoof IP by ineffective challenge |
my $caller=getpeername($client); |
|
my ($port,$iaddr)=unpack_sockaddr_in($caller); |
|
my $clientip=inet_ntoa($iaddr); |
|
my $clientrec=($hostid{$clientip} ne undef); |
|
&logthis( |
|
"<font color=yellow>INFO: Connection $i, $clientip ($hostid{$clientip})</font>" |
|
); |
|
&status("Connecting $clientip ($hostid{$clientip})"); |
|
my $clientok; |
|
if ($clientrec) { |
|
&status("Waiting for init from $clientip ($hostid{$clientip})"); |
|
my $remotereq=<$client>; |
|
$remotereq=~s/\W//g; |
|
if ($remotereq eq 'init') { |
|
my $challenge="$$".time; |
|
print $client "$challenge\n"; |
|
&status( |
|
"Waiting for challenge reply from $clientip ($hostid{$clientip})"); |
|
$remotereq=<$client>; |
|
$remotereq=~s/\W//g; |
|
if ($challenge eq $remotereq) { |
|
$clientok=1; |
|
print $client "ok\n"; |
|
} else { |
|
&logthis( |
|
"<font color=blue>WARNING: $clientip did not reply challenge</font>"); |
|
&status('No challenge reply '.$clientip); |
|
} |
|
} else { |
|
&logthis( |
|
"<font color=blue>WARNING: " |
|
."$clientip failed to initialize: >$remotereq< </font>"); |
|
&status('No init '.$clientip); |
|
} |
|
} else { |
|
&logthis( |
|
"<font color=blue>WARNING: Unknown client $clientip</font>"); |
|
&status('Hung up on '.$clientip); |
|
} |
|
if ($clientok) { |
|
# ---------------- New known client connecting, could mean machine online again |
|
|
|
&reconlonc("$perlvar{'lonSockDir'}/$hostid{$clientip}"); |
my $outsideip=$clientip; |
&logthis( |
if ($clientip eq '127.0.0.1') { |
"<font color=green>Established connection: $hostid{$clientip}</font>"); |
$outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'}); |
&status('Will listen to '.$hostid{$clientip}); |
} |
# ------------------------------------------------------------ Process requests |
|
while (my $userinput=<$client>) { |
my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip)); |
chomp($userinput); |
my $ismanager=($managers{$outsideip} ne undef); |
&status('Processing '.$hostid{$clientip}.': '.$userinput); |
$clientname = "[unknonwn]"; |
my $wasenc=0; |
if($clientrec) { # Establish client type. |
alarm(120); |
$ConnectionType = "client"; |
# ------------------------------------------------------------ See if encrypted |
$clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1]; |
if ($userinput =~ /^enc/) { |
if($ismanager) { |
if ($cipher) { |
$ConnectionType = "both"; |
my ($cmd,$cmdlength,$encinput)=split(/:/,$userinput); |
} |
$userinput=''; |
} else { |
for (my $encidx=0;$encidx<length($encinput);$encidx+=16) { |
$ConnectionType = "manager"; |
$userinput.= |
$clientname = $managers{$outsideip}; |
$cipher->decrypt( |
} |
pack("H16",substr($encinput,$encidx,16)) |
my $clientok; |
); |
|
|
if ($clientrec || $ismanager) { |
|
&status("Waiting for init from $clientip $clientname"); |
|
&logthis('<font color="yellow">INFO: Connection, '. |
|
$clientip. |
|
" ($clientname) connection type = $ConnectionType </font>" ); |
|
&status("Connecting $clientip ($clientname))"); |
|
my $remotereq=<$client>; |
|
chomp($remotereq); |
|
Debug("Got init: $remotereq"); |
|
|
|
if ($remotereq =~ /^init/) { |
|
&sethost("sethost:$perlvar{'lonHostID'}"); |
|
# |
|
# If the remote is attempting a local init... give that a try: |
|
# |
|
my ($i, $inittype) = split(/:/, $remotereq); |
|
|
|
# If the connection type is ssl, but I didn't get my |
|
# certificate files yet, then I'll drop back to |
|
# insecure (if allowed). |
|
|
|
if($inittype eq "ssl") { |
|
my ($ca, $cert) = lonssl::CertificateFile; |
|
my $kfile = lonssl::KeyFile; |
|
if((!$ca) || |
|
(!$cert) || |
|
(!$kfile)) { |
|
$inittype = ""; # This forces insecure attempt. |
|
&logthis("<font color=\"blue\"> Certificates not " |
|
."installed -- trying insecure auth</font>"); |
|
} else { # SSL certificates are in place so |
|
} # Leave the inittype alone. |
|
} |
|
|
|
if($inittype eq "local") { |
|
my $key = LocalConnection($client, $remotereq); |
|
if($key) { |
|
Debug("Got local key $key"); |
|
$clientok = 1; |
|
my $cipherkey = pack("H32", $key); |
|
$cipher = new IDEA($cipherkey); |
|
print $client "ok:local\n"; |
|
&logthis('<font color="green"' |
|
. "Successful local authentication </font>"); |
|
$keymode = "local" |
|
} else { |
|
Debug("Failed to get local key"); |
|
$clientok = 0; |
|
shutdown($client, 3); |
|
close $client; |
|
} |
|
} elsif ($inittype eq "ssl") { |
|
my $key = SSLConnection($client); |
|
if ($key) { |
|
$clientok = 1; |
|
my $cipherkey = pack("H32", $key); |
|
$cipher = new IDEA($cipherkey); |
|
&logthis('<font color="green">' |
|
."Successfull ssl authentication with $clientname </font>"); |
|
$keymode = "ssl"; |
|
|
|
} else { |
|
$clientok = 0; |
|
close $client; |
|
} |
|
|
|
} else { |
|
my $ok = InsecureConnection($client); |
|
if($ok) { |
|
$clientok = 1; |
|
&logthis('<font color="green">' |
|
."Successful insecure authentication with $clientname </font>"); |
|
print $client "ok\n"; |
|
$keymode = "insecure"; |
|
} else { |
|
&logthis('<font color="yellow">' |
|
."Attempted insecure connection disallowed </font>"); |
|
close $client; |
|
$clientok = 0; |
|
|
} |
} |
$userinput=substr($userinput,0,$cmdlength); |
|
$wasenc=1; |
|
} |
} |
} |
} else { |
|
&logthis( |
# ------------------------------------------------------------- Normal commands |
"<font color='blue'>WARNING: " |
# ------------------------------------------------------------------------ ping |
."$clientip failed to initialize: >$remotereq< </font>"); |
if ($userinput =~ /^ping/) { |
&status('No init '.$clientip); |
print $client "$perlvar{'lonHostID'}\n"; |
} |
# ------------------------------------------------------------------------ pong |
|
} elsif ($userinput =~ /^pong/) { |
} else { |
$reply=reply("ping",$hostid{$clientip}); |
&logthis( |
print $client "$perlvar{'lonHostID'}:$reply\n"; |
"<font color='blue'>WARNING: Unknown client $clientip</font>"); |
# ------------------------------------------------------------------------ ekey |
&status('Hung up on '.$clientip); |
} elsif ($userinput =~ /^ekey/) { |
} |
my $buildkey=time.$$.int(rand 100000); |
|
$buildkey=~tr/1-6/A-F/; |
if ($clientok) { |
$buildkey=int(rand 100000).$buildkey.int(rand 100000); |
# ---------------- New known client connecting, could mean machine online again |
my $key=$perlvar{'lonHostID'}.$hostid{$clientip}; |
if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip |
$key=~tr/a-z/A-Z/; |
&& $clientip ne '127.0.0.1') { |
$key=~tr/G-P/0-9/; |
&Apache::lonnet::reconlonc($clientname); |
$key=~tr/Q-Z/0-9/; |
} |
$key=$key.$buildkey.$key.$buildkey.$key.$buildkey; |
&logthis("<font color='green'>Established connection: $clientname</font>"); |
$key=substr($key,0,32); |
&status('Will listen to '.$clientname); |
my $cipherkey=pack("H32",$key); |
# ------------------------------------------------------------ Process requests |
$cipher=new IDEA $cipherkey; |
my $keep_going = 1; |
print $client "$buildkey\n"; |
my $user_input; |
# ------------------------------------------------------------------------ load |
while(($user_input = get_request) && $keep_going) { |
} elsif ($userinput =~ /^load/) { |
alarm(120); |
my $loadavg; |
Debug("Main: Got $user_input\n"); |
{ |
$keep_going = &process_request($user_input); |
my $loadfile=IO::File->new('/proc/loadavg'); |
alarm(0); |
$loadavg=<$loadfile>; |
&status('Listening to '.$clientname." ($keymode)"); |
} |
} |
$loadavg =~ s/\s.*//g; |
|
my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'}; |
|
print $client "$loadpercent\n"; |
|
# ----------------------------------------------------------------- currentauth |
|
} elsif ($userinput =~ /^currentauth/) { |
|
if ($wasenc==1) { |
|
my ($cmd,$udom,$uname)=split(/:/,$userinput); |
|
my $proname=propath($udom,$uname); |
|
my $passfilename="$proname/passwd"; |
|
if (-e $passfilename) { |
|
my $pf = IO::File->new($passfilename); |
|
my $realpasswd=<$pf>; |
|
chomp($realpasswd); |
|
my ($howpwd,$contentpwd)=split(/:/,$realpasswd); |
|
my $availablecontent=''; |
|
if ($howpwd eq 'krb4') { |
|
$availablecontent=$contentpwd; |
|
} |
|
print $client "$howpwd:$availablecontent\n"; |
|
} else { |
|
print $client "unknown_user\n"; |
|
} |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
# ------------------------------------------------------------------------ auth |
|
} elsif ($userinput =~ /^auth/) { |
|
if ($wasenc==1) { |
|
my ($cmd,$udom,$uname,$upass)=split(/:/,$userinput); |
|
chomp($upass); |
|
$upass=unescape($upass); |
|
my $proname=propath($udom,$uname); |
|
my $passfilename="$proname/passwd"; |
|
if (-e $passfilename) { |
|
my $pf = IO::File->new($passfilename); |
|
my $realpasswd=<$pf>; |
|
chomp($realpasswd); |
|
my ($howpwd,$contentpwd)=split(/:/,$realpasswd); |
|
my $pwdcorrect=0; |
|
if ($howpwd eq 'internal') { |
|
$pwdcorrect= |
|
(crypt($upass,$contentpwd) eq $contentpwd); |
|
} elsif ($howpwd eq 'unix') { |
|
$contentpwd=(getpwnam($uname))[1]; |
|
my $pwauth_path="/usr/local/sbin/pwauth"; |
|
unless ($contentpwd eq 'x') { |
|
$pwdcorrect= |
|
(crypt($upass,$contentpwd) eq $contentpwd); |
|
} |
|
elsif (-e $pwauth_path) { |
|
open PWAUTH, "|$pwauth_path" or |
|
die "Cannot invoke authentication"; |
|
print PWAUTH "$uname\n$upass\n"; |
|
close PWAUTH; |
|
$pwdcorrect=!$?; |
|
} |
|
} elsif ($howpwd eq 'krb4') { |
|
$null=pack("C",0); |
|
unless ($upass=~/$null/) { |
|
$pwdcorrect=( |
|
Authen::Krb4::get_pw_in_tkt($uname,"", |
|
$contentpwd,'krbtgt',$contentpwd,1, |
|
$upass) == 0); |
|
} else { $pwdcorrect=0; } |
|
} elsif ($howpwd eq 'localauth') { |
|
$pwdcorrect=&localauth::localauth($uname,$upass, |
|
$contentpwd); |
|
} |
|
if ($pwdcorrect) { |
|
print $client "authorized\n"; |
|
} else { |
|
print $client "non_authorized\n"; |
|
} |
|
} else { |
|
print $client "unknown_user\n"; |
|
} |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
# ---------------------------------------------------------------------- passwd |
|
} elsif ($userinput =~ /^passwd/) { |
|
if ($wasenc==1) { |
|
my |
|
($cmd,$udom,$uname,$upass,$npass)=split(/:/,$userinput); |
|
chomp($npass); |
|
$upass=&unescape($upass); |
|
$npass=&unescape($npass); |
|
&logthis("Trying to change password for $uname"); |
|
my $proname=propath($udom,$uname); |
|
my $passfilename="$proname/passwd"; |
|
if (-e $passfilename) { |
|
my $realpasswd; |
|
{ my $pf = IO::File->new($passfilename); |
|
$realpasswd=<$pf>; } |
|
chomp($realpasswd); |
|
my ($howpwd,$contentpwd)=split(/:/,$realpasswd); |
|
if ($howpwd eq 'internal') { |
|
if (crypt($upass,$contentpwd) eq $contentpwd) { |
|
my $salt=time; |
|
$salt=substr($salt,6,2); |
|
my $ncpass=crypt($npass,$salt); |
|
{ my $pf = IO::File->new(">$passfilename"); |
|
print $pf "internal:$ncpass\n"; } |
|
&logthis("Result of password change for $uname: pwchange_success"); |
|
print $client "ok\n"; |
|
} else { |
|
print $client "non_authorized\n"; |
|
} |
|
} elsif ($howpwd eq 'unix') { |
|
# Unix means we have to access /etc/password |
|
# one way or another. |
|
# First: Make sure the current password is |
|
# correct |
|
$contentpwd=(getpwnam($uname))[1]; |
|
my $pwdcorrect = "0"; |
|
my $pwauth_path="/usr/local/sbin/pwauth"; |
|
unless ($contentpwd eq 'x') { |
|
$pwdcorrect= |
|
(crypt($upass,$contentpwd) eq $contentpwd); |
|
} elsif (-e $pwauth_path) { |
|
open PWAUTH, "|$pwauth_path" or |
|
die "Cannot invoke authentication"; |
|
print PWAUTH "$uname\n$upass\n"; |
|
close PWAUTH; |
|
$pwdcorrect=!$?; |
|
} |
|
if ($pwdcorrect) { |
|
my $execdir=$perlvar{'lonDaemons'}; |
|
my $pf = IO::File->new("|$execdir/lcpasswd"); |
|
print $pf "$uname\n$npass\n$npass\n"; |
|
close $pf; |
|
my $result = ($?>0 ? 'pwchange_failure' |
|
: 'ok'); |
|
&logthis("Result of password change for $uname: $result"); |
|
print $client "$result\n"; |
|
} else { |
|
print $client "non_authorized\n"; |
|
} |
|
} else { |
|
print $client "auth_mode_error\n"; |
|
} |
|
} else { |
|
print $client "unknown_user\n"; |
|
} |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
# -------------------------------------------------------------------- makeuser |
|
} elsif ($userinput =~ /^makeuser/) { |
|
my $oldumask=umask(0077); |
|
if ($wasenc==1) { |
|
my |
|
($cmd,$udom,$uname,$umode,$npass)=split(/:/,$userinput); |
|
chomp($npass); |
|
$npass=&unescape($npass); |
|
my $proname=propath($udom,$uname); |
|
my $passfilename="$proname/passwd"; |
|
if (-e $passfilename) { |
|
print $client "already_exists\n"; |
|
} elsif ($udom ne $perlvar{'lonDefDomain'}) { |
|
print $client "not_right_domain\n"; |
|
} else { |
|
@fpparts=split(/\//,$proname); |
|
$fpnow=$fpparts[0].'/'.$fpparts[1].'/'.$fpparts[2]; |
|
$fperror=''; |
|
for ($i=3;$i<=$#fpparts;$i++) { |
|
$fpnow.='/'.$fpparts[$i]; |
|
unless (-e $fpnow) { |
|
unless (mkdir($fpnow,0777)) { |
|
$fperror="error:$!"; |
|
} |
|
} |
|
} |
|
unless ($fperror) { |
|
if ($umode eq 'krb4') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "krb4:$npass\n"; |
|
} |
|
print $client "ok\n"; |
|
} elsif ($umode eq 'internal') { |
|
my $salt=time; |
|
$salt=substr($salt,6,2); |
|
my $ncpass=crypt($npass,$salt); |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "internal:$ncpass\n"; |
|
} |
|
print $client "ok\n"; |
|
} elsif ($umode eq 'localauth') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "localauth:$npass\n"; |
|
} |
|
print $client "ok\n"; |
|
} elsif ($umode eq 'unix') { |
|
{ |
|
my $execpath="$perlvar{'lonDaemons'}/". |
|
"lcuseradd"; |
|
{ |
|
my $se = IO::File->new("|$execpath"); |
|
print $se "$uname\n"; |
|
print $se "$npass\n"; |
|
print $se "$npass\n"; |
|
} |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "unix:\n"; |
|
} |
|
print $client "ok\n"; |
|
} elsif ($umode eq 'none') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "none:\n"; |
|
} |
|
print $client "ok\n"; |
|
} else { |
|
print $client "auth_mode_error\n"; |
|
} |
|
} else { |
|
print $client "$fperror\n"; |
|
} |
|
} |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
umask($oldumask); |
|
# -------------------------------------------------------------- changeuserauth |
|
} elsif ($userinput =~ /^changeuserauth/) { |
|
if ($wasenc==1) { |
|
my |
|
($cmd,$udom,$uname,$umode,$npass)=split(/:/,$userinput); |
|
chomp($npass); |
|
$npass=&unescape($npass); |
|
my $proname=propath($udom,$uname); |
|
my $passfilename="$proname/passwd"; |
|
if ($udom ne $perlvar{'lonDefDomain'}) { |
|
print $client "not_right_domain\n"; |
|
} else { |
|
if ($umode eq 'krb4') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "krb4:$npass\n"; |
|
} |
|
print $client "ok\n"; |
|
} elsif ($umode eq 'internal') { |
|
my $salt=time; |
|
$salt=substr($salt,6,2); |
|
my $ncpass=crypt($npass,$salt); |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "internal:$ncpass\n"; |
|
} |
|
print $client "ok\n"; |
|
} elsif ($umode eq 'localauth') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "localauth:$npass\n"; |
|
} |
|
print $client "ok\n"; |
|
} elsif ($umode eq 'unix') { |
|
{ |
|
my $execpath="$perlvar{'lonDaemons'}/". |
|
"lcuseradd"; |
|
{ |
|
my $se = IO::File->new("|$execpath"); |
|
print $se "$uname\n"; |
|
print $se "$npass\n"; |
|
print $se "$npass\n"; |
|
} |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "unix:\n"; |
|
} |
|
print $client "ok\n"; |
|
} elsif ($umode eq 'none') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "none:\n"; |
|
} |
|
print $client "ok\n"; |
|
} else { |
|
print $client "auth_mode_error\n"; |
|
} |
|
} |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
# ------------------------------------------------------------------------ home |
|
} elsif ($userinput =~ /^home/) { |
|
my ($cmd,$udom,$uname)=split(/:/,$userinput); |
|
chomp($uname); |
|
my $proname=propath($udom,$uname); |
|
if (-e $proname) { |
|
print $client "found\n"; |
|
} else { |
|
print $client "not_found\n"; |
|
} |
|
# ---------------------------------------------------------------------- update |
|
} elsif ($userinput =~ /^update/) { |
|
my ($cmd,$fname)=split(/:/,$userinput); |
|
my $ownership=ishome($fname); |
|
if ($ownership eq 'not_owner') { |
|
if (-e $fname) { |
|
my ($dev,$ino,$mode,$nlink, |
|
$uid,$gid,$rdev,$size, |
|
$atime,$mtime,$ctime, |
|
$blksize,$blocks)=stat($fname); |
|
$now=time; |
|
$since=$now-$atime; |
|
if ($since>$perlvar{'lonExpire'}) { |
|
$reply= |
|
reply("unsub:$fname","$hostid{$clientip}"); |
|
unlink("$fname"); |
|
} else { |
|
my $transname="$fname.in.transfer"; |
|
my $remoteurl= |
|
reply("sub:$fname","$hostid{$clientip}"); |
|
my $response; |
|
{ |
|
my $ua=new LWP::UserAgent; |
|
my $request=new HTTP::Request('GET',"$remoteurl"); |
|
$response=$ua->request($request,$transname); |
|
} |
|
if ($response->is_error()) { |
|
unlink($transname); |
|
my $message=$response->status_line; |
|
&logthis( |
|
"LWP GET: $message for $fname ($remoteurl)"); |
|
} else { |
|
if ($remoteurl!~/\.meta$/) { |
|
my $ua=new LWP::UserAgent; |
|
my $mrequest= |
|
new HTTP::Request('GET',$remoteurl.'.meta'); |
|
my $mresponse= |
|
$ua->request($mrequest,$fname.'.meta'); |
|
if ($mresponse->is_error()) { |
|
unlink($fname.'.meta'); |
|
} |
|
} |
|
rename($transname,$fname); |
|
} |
|
} |
|
print $client "ok\n"; |
|
} else { |
|
print $client "not_found\n"; |
|
} |
|
} else { |
|
print $client "rejected\n"; |
|
} |
|
# ----------------------------------------------------------------- unsubscribe |
|
} elsif ($userinput =~ /^unsub/) { |
|
my ($cmd,$fname)=split(/:/,$userinput); |
|
if (-e $fname) { |
|
if (unlink("$fname.$hostid{$clientip}")) { |
|
print $client "ok\n"; |
|
} else { |
|
print $client "not_subscribed\n"; |
|
} |
|
} else { |
|
print $client "not_found\n"; |
|
} |
|
# ------------------------------------------------------------------- subscribe |
|
} elsif ($userinput =~ /^sub/) { |
|
my ($cmd,$fname)=split(/:/,$userinput); |
|
my $ownership=ishome($fname); |
|
if ($ownership eq 'owner') { |
|
if (-e $fname) { |
|
if (-d $fname) { |
|
print $client "directory\n"; |
|
} else { |
|
$now=time; |
|
{ |
|
my $sh; |
|
if ($sh= |
|
IO::File->new(">$fname.$hostid{$clientip}")) { |
|
print $sh "$clientip:$now\n"; |
|
} |
|
} |
|
unless ($fname=~/\.meta$/) { |
|
unlink("$fname.meta.$hostid{$clientip}"); |
|
} |
|
$fname=~s/\/home\/httpd\/html\/res/raw/; |
|
$fname="http://$thisserver/".$fname; |
|
print $client "$fname\n"; |
|
} |
|
} else { |
|
print $client "not_found\n"; |
|
} |
|
} else { |
|
print $client "rejected\n"; |
|
} |
|
# ------------------------------------------------------------------------- log |
|
} elsif ($userinput =~ /^log/) { |
|
my ($cmd,$udom,$uname,$what)=split(/:/,$userinput); |
|
chomp($what); |
|
my $proname=propath($udom,$uname); |
|
my $now=time; |
|
{ |
|
my $hfh; |
|
if ($hfh=IO::File->new(">>$proname/activity.log")) { |
|
print $hfh "$now:$hostid{$clientip}:$what\n"; |
|
print $client "ok\n"; |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
} |
|
# ------------------------------------------------------------------------- put |
|
} elsif ($userinput =~ /^put/) { |
|
my ($cmd,$udom,$uname,$namespace,$what) |
|
=split(/:/,$userinput); |
|
$namespace=~s/\//\_/g; |
|
$namespace=~s/\W//g; |
|
if ($namespace ne 'roles') { |
|
chomp($what); |
|
my $proname=propath($udom,$uname); |
|
my $now=time; |
|
unless ($namespace=~/^nohist\_/) { |
|
my $hfh; |
|
if ( |
|
$hfh=IO::File->new(">>$proname/$namespace.hist") |
|
) { print $hfh "P:$now:$what\n"; } |
|
} |
|
my @pairs=split(/\&/,$what); |
|
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT,0640)) { |
|
foreach $pair (@pairs) { |
|
($key,$value)=split(/=/,$pair); |
|
$hash{$key}=$value; |
|
} |
|
if (untie(%hash)) { |
|
print $client "ok\n"; |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
# -------------------------------------------------------------------- rolesput |
|
} elsif ($userinput =~ /^rolesput/) { |
|
if ($wasenc==1) { |
|
my ($cmd,$exedom,$exeuser,$udom,$uname,$what) |
|
=split(/:/,$userinput); |
|
my $namespace='roles'; |
|
chomp($what); |
|
my $proname=propath($udom,$uname); |
|
my $now=time; |
|
{ |
|
my $hfh; |
|
if ( |
|
$hfh=IO::File->new(">>$proname/$namespace.hist") |
|
) { |
|
print $hfh "P:$now:$exedom:$exeuser:$what\n"; |
|
} |
|
} |
|
my @pairs=split(/\&/,$what); |
|
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT,0640)) { |
|
foreach $pair (@pairs) { |
|
($key,$value)=split(/=/,$pair); |
|
$hash{$key}=$value; |
|
} |
|
if (untie(%hash)) { |
|
print $client "ok\n"; |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
# ------------------------------------------------------------------------- get |
|
} elsif ($userinput =~ /^get/) { |
|
my ($cmd,$udom,$uname,$namespace,$what) |
|
=split(/:/,$userinput); |
|
$namespace=~s/\//\_/g; |
|
$namespace=~s/\W//g; |
|
chomp($what); |
|
my @queries=split(/\&/,$what); |
|
my $proname=propath($udom,$uname); |
|
my $qresult=''; |
|
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER,0640)) { |
|
for ($i=0;$i<=$#queries;$i++) { |
|
$qresult.="$hash{$queries[$i]}&"; |
|
} |
|
if (untie(%hash)) { |
|
$qresult=~s/\&$//; |
|
print $client "$qresult\n"; |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
# ------------------------------------------------------------------------ eget |
|
} elsif ($userinput =~ /^eget/) { |
|
my ($cmd,$udom,$uname,$namespace,$what) |
|
=split(/:/,$userinput); |
|
$namespace=~s/\//\_/g; |
|
$namespace=~s/\W//g; |
|
chomp($what); |
|
my @queries=split(/\&/,$what); |
|
my $proname=propath($udom,$uname); |
|
my $qresult=''; |
|
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER,0640)) { |
|
for ($i=0;$i<=$#queries;$i++) { |
|
$qresult.="$hash{$queries[$i]}&"; |
|
} |
|
if (untie(%hash)) { |
|
$qresult=~s/\&$//; |
|
if ($cipher) { |
|
my $cmdlength=length($qresult); |
|
$qresult.=" "; |
|
my $encqresult=''; |
|
for |
|
(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) { |
|
$encqresult.= |
|
unpack("H16", |
|
$cipher->encrypt(substr($qresult,$encidx,8))); |
|
} |
|
print $client "enc:$cmdlength:$encqresult\n"; |
|
} else { |
|
print $client "error:no_key\n"; |
|
} |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
# ------------------------------------------------------------------------- del |
|
} elsif ($userinput =~ /^del/) { |
|
my ($cmd,$udom,$uname,$namespace,$what) |
|
=split(/:/,$userinput); |
|
$namespace=~s/\//\_/g; |
|
$namespace=~s/\W//g; |
|
chomp($what); |
|
my $proname=propath($udom,$uname); |
|
my $now=time; |
|
unless ($namespace=~/^nohist\_/) { |
|
my $hfh; |
|
if ( |
|
$hfh=IO::File->new(">>$proname/$namespace.hist") |
|
) { print $hfh "D:$now:$what\n"; } |
|
} |
|
my @keys=split(/\&/,$what); |
|
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT,0640)) { |
|
foreach $key (@keys) { |
|
delete($hash{$key}); |
|
} |
|
if (untie(%hash)) { |
|
print $client "ok\n"; |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
# ------------------------------------------------------------------------ keys |
|
} elsif ($userinput =~ /^keys/) { |
|
my ($cmd,$udom,$uname,$namespace) |
|
=split(/:/,$userinput); |
|
$namespace=~s/\//\_/g; |
|
$namespace=~s/\W//g; |
|
my $proname=propath($udom,$uname); |
|
my $qresult=''; |
|
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER,0640)) { |
|
foreach $key (keys %hash) { |
|
$qresult.="$key&"; |
|
} |
|
if (untie(%hash)) { |
|
$qresult=~s/\&$//; |
|
print $client "$qresult\n"; |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
# ------------------------------------------------------------------------ dump |
|
} elsif ($userinput =~ /^dump/) { |
|
my ($cmd,$udom,$uname,$namespace,$regexp) |
|
=split(/:/,$userinput); |
|
$namespace=~s/\//\_/g; |
|
$namespace=~s/\W//g; |
|
if (defined($regexp)) { |
|
$regexp=&unescape($regexp); |
|
} else { |
|
$regexp='.'; |
|
} |
|
my $proname=propath($udom,$uname); |
|
my $qresult=''; |
|
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER,0640)) { |
|
foreach $key (keys %hash) { |
|
if (eval('$key=~/$regexp/')) { |
|
$qresult.="$key=$hash{$key}&"; |
|
} |
|
} |
|
if (untie(%hash)) { |
|
$qresult=~s/\&$//; |
|
print $client "$qresult\n"; |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
# ----------------------------------------------------------------------- store |
|
} elsif ($userinput =~ /^store/) { |
|
my ($cmd,$udom,$uname,$namespace,$rid,$what) |
|
=split(/:/,$userinput); |
|
$namespace=~s/\//\_/g; |
|
$namespace=~s/\W//g; |
|
if ($namespace ne 'roles') { |
|
chomp($what); |
|
my $proname=propath($udom,$uname); |
|
my $now=time; |
|
unless ($namespace=~/^nohist\_/) { |
|
my $hfh; |
|
if ( |
|
$hfh=IO::File->new(">>$proname/$namespace.hist") |
|
) { print $hfh "P:$now:$rid:$what\n"; } |
|
} |
|
my @pairs=split(/\&/,$what); |
|
|
|
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT,0640)) { |
|
my @previouskeys=split(/&/,$hash{"keys:$rid"}); |
|
my $key; |
|
$hash{"version:$rid"}++; |
|
my $version=$hash{"version:$rid"}; |
|
my $allkeys=''; |
|
foreach $pair (@pairs) { |
|
($key,$value)=split(/=/,$pair); |
|
$allkeys.=$key.':'; |
|
$hash{"$version:$rid:$key"}=$value; |
|
} |
|
$hash{"$version:$rid:timestamp"}=$now; |
|
$allkeys.='timestamp'; |
|
$hash{"$version:keys:$rid"}=$allkeys; |
|
if (untie(%hash)) { |
|
print $client "ok\n"; |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
# --------------------------------------------------------------------- restore |
|
} elsif ($userinput =~ /^restore/) { |
|
my ($cmd,$udom,$uname,$namespace,$rid) |
|
=split(/:/,$userinput); |
|
$namespace=~s/\//\_/g; |
|
$namespace=~s/\W//g; |
|
chomp($rid); |
|
my $proname=propath($udom,$uname); |
|
my $qresult=''; |
|
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER,0640)) { |
|
my $version=$hash{"version:$rid"}; |
|
$qresult.="version=$version&"; |
|
my $scope; |
|
for ($scope=1;$scope<=$version;$scope++) { |
|
my $vkeys=$hash{"$scope:keys:$rid"}; |
|
my @keys=split(/:/,$vkeys); |
|
my $key; |
|
$qresult.="$scope:keys=$vkeys&"; |
|
foreach $key (@keys) { |
|
$qresult.="$scope:$key=".$hash{"$scope:$rid:$key"}."&"; |
|
} |
|
} |
|
if (untie(%hash)) { |
|
$qresult=~s/\&$//; |
|
print $client "$qresult\n"; |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
# ------------------------------------------------------------------- querysend |
|
} elsif ($userinput =~ /^querysend/) { |
|
my ($cmd,$query, |
|
$custom,$customshow)=split(/:/,$userinput); |
|
$query=~s/\n*$//g; |
|
unless ($custom or $customshow) { |
|
print $client "". |
|
sqlreply("$hostid{$clientip}\&$query")."\n"; |
|
} |
|
else { |
|
print $client "". |
|
sqlreply("$hostid{$clientip}\&$query". |
|
"\&$custom"."\&$customshow")."\n"; |
|
} |
|
# ------------------------------------------------------------------ queryreply |
|
} elsif ($userinput =~ /^queryreply/) { |
|
my ($cmd,$id,$reply)=split(/:/,$userinput); |
|
my $store; |
|
my $execdir=$perlvar{'lonDaemons'}; |
|
if ($store=IO::File->new(">$execdir/tmp/$id")) { |
|
$reply=~s/\&/\n/g; |
|
print $store $reply; |
|
close $store; |
|
my $store2=IO::File->new(">$execdir/tmp/$id.end"); |
|
print $store2 "done\n"; |
|
close $store2; |
|
print $client "ok\n"; |
|
} |
|
else { |
|
print $client "error:$!\n"; |
|
} |
|
# ----------------------------------------------------------------------- idput |
|
} elsif ($userinput =~ /^idput/) { |
|
my ($cmd,$udom,$what)=split(/:/,$userinput); |
|
chomp($what); |
|
$udom=~s/\W//g; |
|
my $proname="$perlvar{'lonUsersDir'}/$udom/ids"; |
|
my $now=time; |
|
{ |
|
my $hfh; |
|
if ( |
|
$hfh=IO::File->new(">>$proname.hist") |
|
) { print $hfh "P:$now:$what\n"; } |
|
} |
|
my @pairs=split(/\&/,$what); |
|
if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_WRCREAT,0640)) { |
|
foreach $pair (@pairs) { |
|
($key,$value)=split(/=/,$pair); |
|
$hash{$key}=$value; |
|
} |
|
if (untie(%hash)) { |
|
print $client "ok\n"; |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
# ----------------------------------------------------------------------- idget |
|
} elsif ($userinput =~ /^idget/) { |
|
my ($cmd,$udom,$what)=split(/:/,$userinput); |
|
chomp($what); |
|
$udom=~s/\W//g; |
|
my $proname="$perlvar{'lonUsersDir'}/$udom/ids"; |
|
my @queries=split(/\&/,$what); |
|
my $qresult=''; |
|
if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_READER,0640)) { |
|
for ($i=0;$i<=$#queries;$i++) { |
|
$qresult.="$hash{$queries[$i]}&"; |
|
} |
|
if (untie(%hash)) { |
|
$qresult=~s/\&$//; |
|
print $client "$qresult\n"; |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
} else { |
|
print $client "error:$!\n"; |
|
} |
|
# ---------------------------------------------------------------------- tmpput |
|
} elsif ($userinput =~ /^tmpput/) { |
|
my ($cmd,$what)=split(/:/,$userinput); |
|
my $store; |
|
$tmpsnum++; |
|
my $id=$$.'_'.$clientip.'_'.$tmpsnum; |
|
$id=~s/\W/\_/g; |
|
$what=~s/\n//g; |
|
my $execdir=$perlvar{'lonDaemons'}; |
|
if ($store=IO::File->new(">$execdir/tmp/$id.tmp")) { |
|
print $store $what; |
|
close $store; |
|
print $client "$id\n"; |
|
} |
|
else { |
|
print $client "error:$!\n"; |
|
} |
|
|
|
# ---------------------------------------------------------------------- tmpget |
|
} elsif ($userinput =~ /^tmpget/) { |
|
my ($cmd,$id)=split(/:/,$userinput); |
|
chomp($id); |
|
$id=~s/\W/\_/g; |
|
my $store; |
|
my $execdir=$perlvar{'lonDaemons'}; |
|
if ($store=IO::File->new("$execdir/tmp/$id.tmp")) { |
|
my $reply=<$store>; |
|
print $client "$reply\n"; |
|
close $store; |
|
} |
|
else { |
|
print $client "error:$!\n"; |
|
} |
|
|
|
# -------------------------------------------------------------------------- ls |
|
} elsif ($userinput =~ /^ls/) { |
|
my ($cmd,$ulsdir)=split(/:/,$userinput); |
|
my $ulsout=''; |
|
my $ulsfn; |
|
if (-e $ulsdir) { |
|
if (opendir(LSDIR,$ulsdir)) { |
|
while ($ulsfn=readdir(LSDIR)) { |
|
my @ulsstats=stat($ulsdir.'/'.$ulsfn); |
|
$ulsout.=$ulsfn.'&'.join('&',@ulsstats).':'; |
|
} |
|
closedir(LSDIR); |
|
} |
|
} else { |
|
$ulsout='no_such_dir'; |
|
} |
|
if ($ulsout eq '') { $ulsout='empty'; } |
|
print $client "$ulsout\n"; |
|
# ------------------------------------------------------------------ Hanging up |
|
} elsif (($userinput =~ /^exit/) || |
|
($userinput =~ /^init/)) { |
|
&logthis( |
|
"Client $clientip ($hostid{$clientip}) hanging up: $userinput"); |
|
print $client "bye\n"; |
|
$client->close(); |
|
last; |
|
# ------------------------------------------------------------- unknown command |
|
} else { |
|
# unknown command |
|
print $client "unknown_cmd\n"; |
|
} |
|
# -------------------------------------------------------------------- complete |
|
alarm(0); |
|
&status('Listening to '.$hostid{$clientip}); |
|
} |
|
# --------------------------------------------- client unknown or fishy, refuse |
# --------------------------------------------- client unknown or fishy, refuse |
} else { |
} else { |
print $client "refused\n"; |
print $client "refused\n"; |
$client->close(); |
$client->close(); |
&logthis("<font color=blue>WARNING: " |
&logthis("<font color='blue'>WARNING: " |
."Rejected client $clientip, closing connection</font>"); |
."Rejected client $clientip, closing connection</font>"); |
|
} |
|
} |
|
|
|
# ============================================================================= |
|
|
|
&logthis("<font color='red'>CRITICAL: " |
|
."Disconnect from $clientip ($clientname)</font>"); |
|
|
|
|
|
# this exit is VERY important, otherwise the child will become |
|
# a producer of more and more children, forking yourself into |
|
# process death. |
|
exit; |
|
|
|
} |
|
# |
|
# Determine if a user is an author for the indicated domain. |
|
# |
|
# Parameters: |
|
# domain - domain to check in . |
|
# user - Name of user to check. |
|
# |
|
# Return: |
|
# 1 - User is an author for domain. |
|
# 0 - User is not an author for domain. |
|
sub is_author { |
|
my ($domain, $user) = @_; |
|
|
|
&Debug("is_author: $user @ $domain"); |
|
|
|
my $hashref = &tie_user_hash($domain, $user, "roles", |
|
&GDBM_READER()); |
|
|
|
# Author role should show up as a key /domain/_au |
|
|
|
my $key = "/$domain/_au"; |
|
my $value; |
|
if (defined($hashref)) { |
|
$value = $hashref->{$key}; |
|
} |
|
|
|
if(defined($value)) { |
|
&Debug("$user @ $domain is an author"); |
|
} |
|
|
|
return defined($value); |
|
} |
|
# |
|
# Checks to see if the input roleput request was to set |
|
# an author role. If so, invokes the lchtmldir script to set |
|
# up a correct public_html |
|
# Parameters: |
|
# request - The request sent to the rolesput subchunk. |
|
# We're looking for /domain/_au |
|
# domain - The domain in which the user is having roles doctored. |
|
# user - Name of the user for which the role is being put. |
|
# authtype - The authentication type associated with the user. |
|
# |
|
sub manage_permissions { |
|
my ($request, $domain, $user, $authtype) = @_; |
|
|
|
&Debug("manage_permissions: $request $domain $user $authtype"); |
|
|
|
# See if the request is of the form /$domain/_au |
|
if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput... |
|
my $execdir = $perlvar{'lonDaemons'}; |
|
my $userhome= "/home/$user" ; |
|
&logthis("system $execdir/lchtmldir $userhome $user $authtype"); |
|
&Debug("Setting homedir permissions for $userhome"); |
|
system("$execdir/lchtmldir $userhome $user $authtype"); |
|
} |
|
} |
|
|
|
|
|
# |
|
# Return the full path of a user password file, whether it exists or not. |
|
# Parameters: |
|
# domain - Domain in which the password file lives. |
|
# user - name of the user. |
|
# Returns: |
|
# Full passwd path: |
|
# |
|
sub password_path { |
|
my ($domain, $user) = @_; |
|
return &propath($domain, $user).'/passwd'; |
|
} |
|
|
|
# Password Filename |
|
# Returns the path to a passwd file given domain and user... only if |
|
# it exists. |
|
# Parameters: |
|
# domain - Domain in which to search. |
|
# user - username. |
|
# Returns: |
|
# - If the password file exists returns its path. |
|
# - If the password file does not exist, returns undefined. |
|
# |
|
sub password_filename { |
|
my ($domain, $user) = @_; |
|
|
|
Debug ("PasswordFilename called: dom = $domain user = $user"); |
|
|
|
my $path = &password_path($domain, $user); |
|
Debug("PasswordFilename got path: $path"); |
|
if(-e $path) { |
|
return $path; |
|
} else { |
|
return undef; |
|
} |
|
} |
|
|
|
# |
|
# Rewrite the contents of the user's passwd file. |
|
# Parameters: |
|
# domain - domain of the user. |
|
# name - User's name. |
|
# contents - New contents of the file. |
|
# Returns: |
|
# 0 - Failed. |
|
# 1 - Success. |
|
# |
|
sub rewrite_password_file { |
|
my ($domain, $user, $contents) = @_; |
|
|
|
my $file = &password_filename($domain, $user); |
|
if (defined $file) { |
|
my $pf = IO::File->new(">$file"); |
|
if($pf) { |
|
print $pf "$contents\n"; |
|
return 1; |
|
} else { |
|
return 0; |
|
} |
|
} else { |
|
return 0; |
|
} |
|
|
|
} |
|
|
|
# |
|
# get_auth_type - Determines the authorization type of a user in a domain. |
|
|
|
# Returns the authorization type or nouser if there is no such user. |
|
# |
|
sub get_auth_type |
|
{ |
|
|
|
my ($domain, $user) = @_; |
|
|
|
Debug("get_auth_type( $domain, $user ) \n"); |
|
my $proname = &propath($domain, $user); |
|
my $passwdfile = "$proname/passwd"; |
|
if( -e $passwdfile ) { |
|
my $pf = IO::File->new($passwdfile); |
|
my $realpassword = <$pf>; |
|
chomp($realpassword); |
|
Debug("Password info = $realpassword\n"); |
|
my ($authtype, $contentpwd) = split(/:/, $realpassword); |
|
Debug("Authtype = $authtype, content = $contentpwd\n"); |
|
return "$authtype:$contentpwd"; |
|
} else { |
|
Debug("Returning nouser"); |
|
return "nouser"; |
|
} |
|
} |
|
|
|
# |
|
# Validate a user given their domain, name and password. This utility |
|
# function is used by both AuthenticateHandler and ChangePasswordHandler |
|
# to validate the login credentials of a user. |
|
# Parameters: |
|
# $domain - The domain being logged into (this is required due to |
|
# the capability for multihomed systems. |
|
# $user - The name of the user being validated. |
|
# $password - The user's propoposed password. |
|
# |
|
# Returns: |
|
# 1 - The domain,user,pasword triplet corresponds to a valid |
|
# user. |
|
# 0 - The domain,user,password triplet is not a valid user. |
|
# |
|
sub validate_user { |
|
my ($domain, $user, $password, $checkdefauth) = @_; |
|
|
|
# Why negative ~pi you may well ask? Well this function is about |
|
# authentication, and therefore very important to get right. |
|
# I've initialized the flag that determines whether or not I've |
|
# validated correctly to a value it's not supposed to get. |
|
# At the end of this function. I'll ensure that it's not still that |
|
# value so we don't just wind up returning some accidental value |
|
# as a result of executing an unforseen code path that |
|
# did not set $validated. At the end of valid execution paths, |
|
# validated shoule be 1 for success or 0 for failuer. |
|
|
|
my $validated = -3.14159; |
|
|
|
# How we authenticate is determined by the type of authentication |
|
# the user has been assigned. If the authentication type is |
|
# "nouser", the user does not exist so we will return 0. |
|
|
|
my $contents = &get_auth_type($domain, $user); |
|
my ($howpwd, $contentpwd) = split(/:/, $contents); |
|
|
|
my $null = pack("C",0); # Used by kerberos auth types. |
|
|
|
if ($howpwd eq 'nouser') { |
|
if ($checkdefauth) { |
|
my %domdefaults = &Apache::lonnet::get_domain_defaults($domain); |
|
if ($domdefaults{'auth_def'} eq 'localauth') { |
|
$howpwd = $domdefaults{'auth_def'}; |
|
$contentpwd = $domdefaults{'auth_arg_def'}; |
|
} elsif ((($domdefaults{'auth_def'} eq 'krb4') || |
|
($domdefaults{'auth_def'} eq 'krb5')) && |
|
($domdefaults{'auth_arg_def'} ne '')) { |
|
$howpwd = $domdefaults{'auth_def'}; |
|
$contentpwd = $domdefaults{'auth_arg_def'}; |
} |
} |
} |
} |
|
} |
|
if ($howpwd ne 'nouser') { |
|
if($howpwd eq "internal") { # Encrypted is in local password file. |
|
$validated = (crypt($password, $contentpwd) eq $contentpwd); |
|
} |
|
elsif ($howpwd eq "unix") { # User is a normal unix user. |
|
$contentpwd = (getpwnam($user))[1]; |
|
if($contentpwd) { |
|
if($contentpwd eq 'x') { # Shadow password file... |
|
my $pwauth_path = "/usr/local/sbin/pwauth"; |
|
open PWAUTH, "|$pwauth_path" or |
|
die "Cannot invoke authentication"; |
|
print PWAUTH "$user\n$password\n"; |
|
close PWAUTH; |
|
$validated = ! $?; |
|
|
|
} else { # Passwords in /etc/passwd. |
|
$validated = (crypt($password, |
|
$contentpwd) eq $contentpwd); |
|
} |
|
} else { |
|
$validated = 0; |
|
} |
|
} |
|
elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain. |
|
if(! ($password =~ /$null/) ) { |
|
my $k4error = &Authen::Krb4::get_pw_in_tkt($user, |
|
"", |
|
$contentpwd,, |
|
'krbtgt', |
|
$contentpwd, |
|
1, |
|
$password); |
|
if(!$k4error) { |
|
$validated = 1; |
|
} else { |
|
$validated = 0; |
|
&logthis('krb4: '.$user.', '.$contentpwd.', '. |
|
&Authen::Krb4::get_err_txt($Authen::Krb4::error)); |
|
} |
|
} else { |
|
$validated = 0; # Password has a match with null. |
|
} |
|
} elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain. |
|
if(!($password =~ /$null/)) { # Null password not allowed. |
|
my $krbclient = &Authen::Krb5::parse_name($user.'@' |
|
.$contentpwd); |
|
my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd; |
|
my $krbserver = &Authen::Krb5::parse_name($krbservice); |
|
my $credentials= &Authen::Krb5::cc_default(); |
|
$credentials->initialize(&Authen::Krb5::parse_name($user.'@' |
|
.$contentpwd)); |
|
my $krbreturn; |
|
if (exists(&Authen::Krb5::get_init_creds_password)) { |
|
$krbreturn = |
|
&Authen::Krb5::get_init_creds_password($krbclient,$password, |
|
$krbservice); |
|
$validated = (ref($krbreturn) eq 'Authen::Krb5::Creds'); |
|
} else { |
|
$krbreturn = |
|
&Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver, |
|
$password,$credentials); |
|
$validated = ($krbreturn == 1); |
|
} |
|
if (!$validated) { |
|
&logthis('krb5: '.$user.', '.$contentpwd.', '. |
|
&Authen::Krb5::error()); |
|
} |
|
} else { |
|
$validated = 0; |
|
} |
|
} elsif ($howpwd eq "localauth") { |
|
# Authenticate via installation specific authentcation method: |
|
$validated = &localauth::localauth($user, |
|
$password, |
|
$contentpwd, |
|
$domain); |
|
if ($validated < 0) { |
|
&logthis("localauth for $contentpwd $user:$domain returned a $validated"); |
|
$validated = 0; |
|
} |
|
} else { # Unrecognized auth is also bad. |
|
$validated = 0; |
|
} |
|
} else { |
|
$validated = 0; |
|
} |
|
# |
|
# $validated has the correct stat of the authentication: |
|
# |
|
|
|
unless ($validated != -3.14159) { |
|
# I >really really< want to know if this happens. |
|
# since it indicates that user authentication is badly |
|
# broken in some code path. |
|
# |
|
die "ValidateUser - failed to set the value of validated $domain, $user $password"; |
|
} |
|
return $validated; |
|
} |
|
|
# ============================================================================= |
|
|
sub addline { |
&logthis("<font color=red>CRITICAL: " |
my ($fname,$hostid,$ip,$newline)=@_; |
."Disconnect from $clientip ($hostid{$clientip})</font>"); |
my $contents; |
# tidy up gracefully and finish |
my $found=0; |
|
my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':'; |
$server->close(); |
my $sh; |
|
if ($sh=IO::File->new("$fname.subscription")) { |
# this exit is VERY important, otherwise the child will become |
while (my $subline=<$sh>) { |
# a producer of more and more children, forking yourself into |
if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;} |
# process death. |
} |
exit; |
$sh->close(); |
|
} |
|
$sh=IO::File->new(">$fname.subscription"); |
|
if ($contents) { print $sh $contents; } |
|
if ($newline) { print $sh $newline; } |
|
$sh->close(); |
|
return $found; |
|
} |
|
|
|
sub get_chat { |
|
my ($cdom,$cname,$udom,$uname,$group)=@_; |
|
|
|
my @entries=(); |
|
my $namespace = 'nohist_chatroom'; |
|
my $namespace_inroom = 'nohist_inchatroom'; |
|
if ($group ne '') { |
|
$namespace .= '_'.$group; |
|
$namespace_inroom .= '_'.$group; |
|
} |
|
my $hashref = &tie_user_hash($cdom, $cname, $namespace, |
|
&GDBM_READER()); |
|
if ($hashref) { |
|
@entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref)); |
|
&untie_user_hash($hashref); |
|
} |
|
my @participants=(); |
|
my $cutoff=time-60; |
|
$hashref = &tie_user_hash($cdom, $cname, $namespace_inroom, |
|
&GDBM_WRCREAT()); |
|
if ($hashref) { |
|
$hashref->{$uname.':'.$udom}=time; |
|
foreach my $user (sort(keys(%$hashref))) { |
|
if ($hashref->{$user}>$cutoff) { |
|
push(@participants, 'active_participant:'.$user); |
|
} |
|
} |
|
&untie_user_hash($hashref); |
|
} |
|
return (@participants,@entries); |
|
} |
|
|
|
sub chat_add { |
|
my ($cdom,$cname,$newchat,$group)=@_; |
|
my @entries=(); |
|
my $time=time; |
|
my $namespace = 'nohist_chatroom'; |
|
my $logfile = 'chatroom.log'; |
|
if ($group ne '') { |
|
$namespace .= '_'.$group; |
|
$logfile = 'chatroom_'.$group.'.log'; |
|
} |
|
my $hashref = &tie_user_hash($cdom, $cname, $namespace, |
|
&GDBM_WRCREAT()); |
|
if ($hashref) { |
|
@entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref)); |
|
my ($lastid)=($entries[$#entries]=~/^(\w+)\:/); |
|
my ($thentime,$idnum)=split(/\_/,$lastid); |
|
my $newid=$time.'_000000'; |
|
if ($thentime==$time) { |
|
$idnum=~s/^0+//; |
|
$idnum++; |
|
$idnum=substr('000000'.$idnum,-6,6); |
|
$newid=$time.'_'.$idnum; |
|
} |
|
$hashref->{$newid}=$newchat; |
|
my $expired=$time-3600; |
|
foreach my $comment (keys(%$hashref)) { |
|
my ($thistime) = ($comment=~/(\d+)\_/); |
|
if ($thistime<$expired) { |
|
delete $hashref->{$comment}; |
|
} |
|
} |
|
{ |
|
my $proname=&propath($cdom,$cname); |
|
if (open(CHATLOG,">>$proname/$logfile")) { |
|
print CHATLOG ("$time:".&unescape($newchat)."\n"); |
|
} |
|
close(CHATLOG); |
|
} |
|
&untie_user_hash($hashref); |
|
} |
|
} |
|
|
|
sub unsub { |
|
my ($fname,$clientip)=@_; |
|
my $result; |
|
my $unsubs = 0; # Number of successful unsubscribes: |
|
|
|
|
|
# An old way subscriptions were handled was to have a |
|
# subscription marker file: |
|
|
|
Debug("Attempting unlink of $fname.$clientname"); |
|
if (unlink("$fname.$clientname")) { |
|
$unsubs++; # Successful unsub via marker file. |
|
} |
|
|
|
# The more modern way to do it is to have a subscription list |
|
# file: |
|
|
|
if (-e "$fname.subscription") { |
|
my $found=&addline($fname,$clientname,$clientip,''); |
|
if ($found) { |
|
$unsubs++; |
|
} |
|
} |
|
|
|
# If either or both of these mechanisms succeeded in unsubscribing a |
|
# resource we can return ok: |
|
|
|
if($unsubs) { |
|
$result = "ok\n"; |
|
} else { |
|
$result = "not_subscribed\n"; |
|
} |
|
|
|
return $result; |
|
} |
|
|
|
sub currentversion { |
|
my $fname=shift; |
|
my $version=-1; |
|
my $ulsdir=''; |
|
if ($fname=~/^(.+)\/[^\/]+$/) { |
|
$ulsdir=$1; |
|
} |
|
my ($fnamere1,$fnamere2); |
|
# remove version if already specified |
|
$fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/; |
|
# get the bits that go before and after the version number |
|
if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) { |
|
$fnamere1=$1; |
|
$fnamere2='.'.$2; |
|
} |
|
if (-e $fname) { $version=1; } |
|
if (-e $ulsdir) { |
|
if(-d $ulsdir) { |
|
if (opendir(LSDIR,$ulsdir)) { |
|
my $ulsfn; |
|
while ($ulsfn=readdir(LSDIR)) { |
|
# see if this is a regular file (ignore links produced earlier) |
|
my $thisfile=$ulsdir.'/'.$ulsfn; |
|
unless (-l $thisfile) { |
|
if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) { |
|
if ($1>$version) { $version=$1; } |
|
} |
|
} |
|
} |
|
closedir(LSDIR); |
|
$version++; |
|
} |
|
} |
|
} |
|
return $version; |
|
} |
|
|
|
sub thisversion { |
|
my $fname=shift; |
|
my $version=-1; |
|
if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) { |
|
$version=$1; |
} |
} |
|
return $version; |
} |
} |
|
|
|
sub subscribe { |
|
my ($userinput,$clientip)=@_; |
|
my $result; |
|
my ($cmd,$fname)=split(/:/,$userinput,2); |
|
my $ownership=&ishome($fname); |
|
if ($ownership eq 'owner') { |
|
# explitly asking for the current version? |
|
unless (-e $fname) { |
|
my $currentversion=¤tversion($fname); |
|
if (&thisversion($fname)==$currentversion) { |
|
if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) { |
|
my $root=$1; |
|
my $extension=$2; |
|
symlink($root.'.'.$extension, |
|
$root.'.'.$currentversion.'.'.$extension); |
|
unless ($extension=~/\.meta$/) { |
|
symlink($root.'.'.$extension.'.meta', |
|
$root.'.'.$currentversion.'.'.$extension.'.meta'); |
|
} |
|
} |
|
} |
|
} |
|
if (-e $fname) { |
|
if (-d $fname) { |
|
$result="directory\n"; |
|
} else { |
|
if (-e "$fname.$clientname") {&unsub($fname,$clientip);} |
|
my $now=time; |
|
my $found=&addline($fname,$clientname,$clientip, |
|
"$clientname:$clientip:$now\n"); |
|
if ($found) { $result="$fname\n"; } |
|
# if they were subscribed to only meta data, delete that |
|
# subscription, when you subscribe to a file you also get |
|
# the metadata |
|
unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); } |
|
$fname=~s/\/home\/httpd\/html\/res/raw/; |
|
$fname="http://".&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname; |
|
$result="$fname\n"; |
|
} |
|
} else { |
|
$result="not_found\n"; |
|
} |
|
} else { |
|
$result="rejected\n"; |
|
} |
|
return $result; |
|
} |
|
# Change the passwd of a unix user. The caller must have |
|
# first verified that the user is a loncapa user. |
|
# |
|
# Parameters: |
|
# user - Unix user name to change. |
|
# pass - New password for the user. |
|
# Returns: |
|
# ok - if success |
|
# other - Some meaningfule error message string. |
|
# NOTE: |
|
# invokes a setuid script to change the passwd. |
|
sub change_unix_password { |
|
my ($user, $pass) = @_; |
|
|
|
&Debug("change_unix_password"); |
|
my $execdir=$perlvar{'lonDaemons'}; |
|
&Debug("Opening lcpasswd pipeline"); |
|
my $pf = IO::File->new("|$execdir/lcpasswd > " |
|
."$perlvar{'lonDaemons'}" |
|
."/logs/lcpasswd.log"); |
|
print $pf "$user\n$pass\n$pass\n"; |
|
close $pf; |
|
my $err = $?; |
|
return ($err < @passwderrors) ? $passwderrors[$err] : |
|
"pwchange_falure - unknown error"; |
|
|
|
|
|
} |
|
|
|
|
|
sub make_passwd_file { |
|
my ($uname, $umode,$npass,$passfilename)=@_; |
|
my $result="ok"; |
|
if ($umode eq 'krb4' or $umode eq 'krb5') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
if ($pf) { |
|
print $pf "$umode:$npass\n"; |
|
} else { |
|
$result = "pass_file_failed_error"; |
|
} |
|
} |
|
} elsif ($umode eq 'internal') { |
|
my $salt=time; |
|
$salt=substr($salt,6,2); |
|
my $ncpass=crypt($npass,$salt); |
|
{ |
|
&Debug("Creating internal auth"); |
|
my $pf = IO::File->new(">$passfilename"); |
|
if($pf) { |
|
print $pf "internal:$ncpass\n"; |
|
} else { |
|
$result = "pass_file_failed_error"; |
|
} |
|
} |
|
} elsif ($umode eq 'localauth') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
if($pf) { |
|
print $pf "localauth:$npass\n"; |
|
} else { |
|
$result = "pass_file_failed_error"; |
|
} |
|
} |
|
} elsif ($umode eq 'unix') { |
|
{ |
|
# |
|
# Don't allow the creation of privileged accounts!!! that would |
|
# be real bad!!! |
|
# |
|
my $uid = getpwnam($uname); |
|
if((defined $uid) && ($uid == 0)) { |
|
&logthis(">>>Attempted to create privilged account blocked"); |
|
return "no_priv_account_error\n"; |
|
} |
|
|
|
my $execpath ="$perlvar{'lonDaemons'}/"."lcuseradd"; |
|
|
|
my $lc_error_file = $execdir."/tmp/lcuseradd".$$.".status"; |
|
{ |
|
&Debug("Executing external: ".$execpath); |
|
&Debug("user = ".$uname.", Password =". $npass); |
|
my $se = IO::File->new("|$execpath > $perlvar{'lonDaemons'}/logs/lcuseradd.log"); |
|
print $se "$uname\n"; |
|
print $se "$npass\n"; |
|
print $se "$npass\n"; |
|
print $se "$lc_error_file\n"; # Status -> unique file. |
|
} |
|
if (-r $lc_error_file) { |
|
&Debug("Opening error file: $lc_error_file"); |
|
my $error = IO::File->new("< $lc_error_file"); |
|
my $useraddok = <$error>; |
|
$error->close; |
|
unlink($lc_error_file); |
|
|
|
chomp $useraddok; |
|
|
|
if($useraddok > 0) { |
|
my $error_text = &lcuseraddstrerror($useraddok); |
|
&logthis("Failed lcuseradd: $error_text"); |
|
$result = "lcuseradd_failed:$error_text"; |
|
} else { |
|
my $pf = IO::File->new(">$passfilename"); |
|
if($pf) { |
|
print $pf "unix:\n"; |
|
} else { |
|
$result = "pass_file_failed_error"; |
|
} |
|
} |
|
} else { |
|
&Debug("Could not locate lcuseradd error: $lc_error_file"); |
|
$result="bug_lcuseradd_no_output_file"; |
|
} |
|
} |
|
} elsif ($umode eq 'none') { |
|
{ |
|
my $pf = IO::File->new("> $passfilename"); |
|
if($pf) { |
|
print $pf "none:\n"; |
|
} else { |
|
$result = "pass_file_failed_error"; |
|
} |
|
} |
|
} else { |
|
$result="auth_mode_error"; |
|
} |
|
return $result; |
|
} |
|
|
|
sub convert_photo { |
|
my ($start,$dest)=@_; |
|
system("convert $start $dest"); |
|
} |
|
|
|
sub sethost { |
|
my ($remotereq) = @_; |
|
my (undef,$hostid)=split(/:/,$remotereq); |
|
# ignore sethost if we are already correct |
|
if ($hostid eq $currenthostid) { |
|
return 'ok'; |
|
} |
|
|
|
if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; } |
|
if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'}) |
|
eq &Apache::lonnet::get_host_ip($hostid)) { |
|
$currenthostid =$hostid; |
|
$currentdomainid=&Apache::lonnet::host_domain($hostid); |
|
&logthis("Setting hostid to $hostid, and domain to $currentdomainid"); |
|
} else { |
|
&logthis("Requested host id $hostid not an alias of ". |
|
$perlvar{'lonHostID'}." refusing connection"); |
|
return 'unable_to_set'; |
|
} |
|
return 'ok'; |
|
} |
|
|
|
sub version { |
|
my ($userinput)=@_; |
|
$remoteVERSION=(split(/:/,$userinput))[1]; |
|
return "version:$VERSION"; |
|
} |
|
|
|
|
# ----------------------------------- POD (plain old documentation, CPAN style) |
# ----------------------------------- POD (plain old documentation, CPAN style) |
|
|
=head1 NAME |
=head1 NAME |
Line 1551 each connection is logged.
|
Line 6937 each connection is logged.
|
|
|
=item * |
=item * |
|
|
|
SIGUSR2 |
|
|
|
Parent Signal assignment: |
|
$SIG{USR2} = \&UpdateHosts |
|
|
|
Child signal assignment: |
|
NONE |
|
|
|
|
|
=item * |
|
|
SIGCHLD |
SIGCHLD |
|
|
Parent signal assignment: |
Parent signal assignment: |
Line 1638 Place in B<logs/lond.log>
|
Line 7035 Place in B<logs/lond.log>
|
|
|
stores hash in namespace |
stores hash in namespace |
|
|
=item rolesput |
=item rolesputy |
|
|
put a role into a user's environment |
put a role into a user's environment |
|
|
Line 1711 Send along temporarily stored informatio
|
Line 7108 Send along temporarily stored informatio
|
|
|
List part of a user's directory. |
List part of a user's directory. |
|
|
|
=item pushtable |
|
|
|
Pushes a file in /home/httpd/lonTab directory. Currently limited to: |
|
hosts.tab and domain.tab. The old file is copied to *.tab.backup but |
|
must be restored manually in case of a problem with the new table file. |
|
pushtable requires that the request be encrypted and validated via |
|
ValidateManager. The form of the command is: |
|
enc:pushtable tablename <tablecontents> \n |
|
where pushtable, tablename and <tablecontents> will be encrypted, but \n is a |
|
cleartext newline. |
|
|
=item Hanging up (exit or init) |
=item Hanging up (exit or init) |
|
|
What to do when a client tells the server that they (the client) |
What to do when a client tells the server that they (the client) |
Line 1721 are leaving the network.
|
Line 7129 are leaving the network.
|
If B<lond> is sent an unknown command (not in the list above), |
If B<lond> is sent an unknown command (not in the list above), |
it replys to the client "unknown_cmd". |
it replys to the client "unknown_cmd". |
|
|
|
|
=item UNKNOWN CLIENT |
=item UNKNOWN CLIENT |
|
|
If the anti-spoofing algorithm cannot verify the client, |
If the anti-spoofing algorithm cannot verify the client, |
Line 1734 to the client, and the connection is clo
|
Line 7143 to the client, and the connection is clo
|
IO::Socket |
IO::Socket |
IO::File |
IO::File |
Apache::File |
Apache::File |
Symbol |
|
POSIX |
POSIX |
Crypt::IDEA |
Crypt::IDEA |
LWP::UserAgent() |
LWP::UserAgent() |
GDBM_File |
GDBM_File |
Authen::Krb4 |
Authen::Krb4 |
|
Authen::Krb5 |
|
|
=head1 COREQUISITES |
=head1 COREQUISITES |
|
|
Line 1752 linux
|
Line 7161 linux
|
Server/Process |
Server/Process |
|
|
=cut |
=cut |
|
|
|
|
|
=pod |
|
|
|
=head1 LOG MESSAGES |
|
|
|
The messages below can be emitted in the lond log. This log is located |
|
in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation |
|
to provide coloring if examined from inside a web page. Some do not. |
|
Where color is used, the colors are; Red for sometihhng to get excited |
|
about and to follow up on. Yellow for something to keep an eye on to |
|
be sure it does not get worse, Green,and Blue for informational items. |
|
|
|
In the discussions below, sometimes reference is made to ~httpd |
|
when describing file locations. There isn't really an httpd |
|
user, however there is an httpd directory that gets installed in the |
|
place that user home directories go. On linux, this is usually |
|
(always?) /home/httpd. |
|
|
|
|
|
Some messages are colorless. These are usually (not always) |
|
Green/Blue color level messages. |
|
|
|
=over 2 |
|
|
|
=item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1 |
|
|
|
A local connection negotiation was attempted by |
|
a host whose IP address was not 127.0.0.1. |
|
The socket is closed and the child will exit. |
|
lond has three ways to establish an encyrption |
|
key with a client: |
|
|
|
=over 2 |
|
|
|
=item local |
|
|
|
The key is written and read from a file. |
|
This is only valid for connections from localhost. |
|
|
|
=item insecure |
|
|
|
The key is generated by the server and |
|
transmitted to the client. |
|
|
|
=item ssl (secure) |
|
|
|
An ssl connection is negotiated with the client, |
|
the key is generated by the server and sent to the |
|
client across this ssl connection before the |
|
ssl connectionis terminated and clear text |
|
transmission resumes. |
|
|
|
=back |
|
|
|
=item (Red) LocalConnection: caller is insane! init = <init> and type = <type> |
|
|
|
The client is local but has not sent an initialization |
|
string that is the literal "init:local" The connection |
|
is closed and the child exits. |
|
|
|
=item Red CRITICAL Can't get key file <error> |
|
|
|
SSL key negotiation is being attempted but the call to |
|
lonssl::KeyFile failed. This usually means that the |
|
configuration file is not correctly defining or protecting |
|
the directories/files lonCertificateDirectory or |
|
lonnetPrivateKey |
|
<error> is a string that describes the reason that |
|
the key file could not be located. |
|
|
|
=item (Red) CRITICAL Can't get certificates <error> |
|
|
|
SSL key negotiation failed because we were not able to retrives our certificate |
|
or the CA's certificate in the call to lonssl::CertificateFile |
|
<error> is the textual reason this failed. Usual reasons: |
|
|
|
=over 2 |
|
|
|
=item Apache config file for loncapa incorrect: |
|
|
|
one of the variables |
|
lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate |
|
undefined or incorrect |
|
|
|
=item Permission error: |
|
|
|
The directory pointed to by lonCertificateDirectory is not readable by lond |
|
|
|
=item Permission error: |
|
|
|
Files in the directory pointed to by lonCertificateDirectory are not readable by lond. |
|
|
|
=item Installation error: |
|
|
|
Either the certificate authority file or the certificate have not |
|
been installed in lonCertificateDirectory. |
|
|
|
=item (Red) CRITICAL SSL Socket promotion failed: <err> |
|
|
|
The promotion of the connection from plaintext to SSL failed |
|
<err> is the reason for the failure. There are two |
|
system calls involved in the promotion (one of which failed), |
|
a dup to produce |
|
a second fd on the raw socket over which the encrypted data |
|
will flow and IO::SOcket::SSL->new_from_fd which creates |
|
the SSL connection on the duped fd. |
|
|
|
=item (Blue) WARNING client did not respond to challenge |
|
|
|
This occurs on an insecure (non SSL) connection negotiation request. |
|
lond generates some number from the time, the PID and sends it to |
|
the client. The client must respond by echoing this information back. |
|
If the client does not do so, that's a violation of the challenge |
|
protocols and the connection will be failed. |
|
|
|
=item (Red) No manager table. Nobody can manage!! |
|
|
|
lond has the concept of privileged hosts that |
|
can perform remote management function such |
|
as update the hosts.tab. The manager hosts |
|
are described in the |
|
~httpd/lonTabs/managers.tab file. |
|
this message is logged if this file is missing. |
|
|
|
|
|
=item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress> |
|
|
|
Reports the successful parse and registration |
|
of a specific manager. |
|
|
|
=item Green existing host <clustername:dnsname> |
|
|
|
The manager host is already defined in the hosts.tab |
|
the information in that table, rather than the info in the |
|
manager table will be used to determine the manager's ip. |
|
|
|
=item (Red) Unable to craete <filename> |
|
|
|
lond has been asked to create new versions of an administrative |
|
file (by a manager). When this is done, the new file is created |
|
in a temp file and then renamed into place so that there are always |
|
usable administrative files, even if the update fails. This failure |
|
message means that the temp file could not be created. |
|
The update is abandoned, and the old file is available for use. |
|
|
|
=item (Green) CopyFile from <oldname> to <newname> failed |
|
|
|
In an update of administrative files, the copy of the existing file to a |
|
backup file failed. The installation of the new file may still succeed, |
|
but there will not be a back up file to rever to (this should probably |
|
be yellow). |
|
|
|
=item (Green) Pushfile: backed up <oldname> to <newname> |
|
|
|
See above, the backup of the old administrative file succeeded. |
|
|
|
=item (Red) Pushfile: Unable to install <filename> <reason> |
|
|
|
The new administrative file could not be installed. In this case, |
|
the old administrative file is still in use. |
|
|
|
=item (Green) Installed new < filename>. |
|
|
|
The new administrative file was successfullly installed. |
|
|
|
=item (Red) Reinitializing lond pid=<pid> |
|
|
|
The lonc child process <pid> will be sent a USR2 |
|
signal. |
|
|
|
=item (Red) Reinitializing self |
|
|
|
We've been asked to re-read our administrative files,and |
|
are doing so. |
|
|
|
=item (Yellow) error:Invalid process identifier <ident> |
|
|
|
A reinit command was received, but the target part of the |
|
command was not valid. It must be either |
|
'lond' or 'lonc' but was <ident> |
|
|
|
=item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline> |
|
|
|
Checking to see if lond has been handed a valid edit |
|
command. It is possible the edit command is not valid |
|
in that case there are no log messages to indicate that. |
|
|
|
=item Result of password change for <username> pwchange_success |
|
|
|
The password for <username> was |
|
successfully changed. |
|
|
|
=item Unable to open <user> passwd to change password |
|
|
|
Could not rewrite the |
|
internal password file for a user |
|
|
|
=item Result of password change for <user> : <result> |
|
|
|
A unix password change for <user> was attempted |
|
and the pipe returned <result> |
|
|
|
=item LWP GET: <message> for <fname> (<remoteurl>) |
|
|
|
The lightweight process fetch for a resource failed |
|
with <message> the local filename that should |
|
have existed/been created was <fname> the |
|
corresponding URI: <remoteurl> This is emitted in several |
|
places. |
|
|
|
=item Unable to move <transname> to <destname> |
|
|
|
From fetch_user_file_handler - the user file was replicated but could not |
|
be mv'd to its final location. |
|
|
|
=item Looking for <domain> <username> |
|
|
|
From user_has_session_handler - This should be a Debug call instead |
|
it indicates lond is about to check whether the specified user has a |
|
session active on the specified domain on the local host. |
|
|
|
=item Client <ip> (<name>) hanging up: <input> |
|
|
|
lond has been asked to exit by its client. The <ip> and <name> identify the |
|
client systemand <input> is the full exit command sent to the server. |
|
|
|
=item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>]. |
|
|
|
A lond child terminated. NOte that this termination can also occur when the |
|
child receives the QUIT or DIE signals. <pid> is the process id of the child, |
|
<hostname> the host lond is working for, and <message> the reason the child died |
|
to the best of our ability to get it (I would guess that any numeric value |
|
represents and errno value). This is immediately followed by |
|
|
|
=item Famous last words: Catching exception - <log> |
|
|
|
Where log is some recent information about the state of the child. |
|
|
|
=item Red CRITICAL: TIME OUT <pid> |
|
|
|
Some timeout occured for server <pid>. THis is normally a timeout on an LWP |
|
doing an HTTP::GET. |
|
|
|
=item child <pid> died |
|
|
|
The reaper caught a SIGCHILD for the lond child process <pid> |
|
This should be modified to also display the IP of the dying child |
|
$children{$pid} |
|
|
|
=item Unknown child 0 died |
|
A child died but the wait for it returned a pid of zero which really should not |
|
ever happen. |
|
|
|
=item Child <which> - <pid> looks like we missed it's death |
|
|
|
When a sigchild is received, the reaper process checks all children to see if they are |
|
alive. If children are dying quite quickly, the lack of signal queuing can mean |
|
that a signal hearalds the death of more than one child. If so this message indicates |
|
which other one died. <which> is the ip of a dead child |
|
|
|
=item Free socket: <shutdownretval> |
|
|
|
The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown. |
|
for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented |
|
to return anything. This is followed by: |
|
|
|
=item Red CRITICAL: Shutting down |
|
|
|
Just prior to exit. |
|
|
|
=item Free socket: <shutdownretval> |
|
|
|
The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself. |
|
This is followed by: |
|
|
|
=item (Red) CRITICAL: Restarting |
|
|
|
lond is about to exec itself to restart. |
|
|
|
=item (Blue) Updating connections |
|
|
|
(In response to a USR2). All the children (except the one for localhost) |
|
are about to be killed, the hosts tab reread, and Apache reloaded via apachereload. |
|
|
|
=item (Blue) UpdateHosts killing child <pid> for ip <ip> |
|
|
|
Due to USR2 as above. |
|
|
|
=item (Green) keeping child for ip <ip> (pid = <pid>) |
|
|
|
In response to USR2 as above, the child indicated is not being restarted because |
|
it's assumed that we'll always need a child for the localhost. |
|
|
|
|
|
=item Going to check on the children |
|
|
|
Parent is about to check on the health of the child processes. |
|
Note that this is in response to a USR1 sent to the parent lond. |
|
there may be one or more of the next two messages: |
|
|
|
=item <pid> is dead |
|
|
|
A child that we have in our child hash as alive has evidently died. |
|
|
|
=item Child <pid> did not respond |
|
|
|
In the health check the child <pid> did not update/produce a pid_.txt |
|
file when sent it's USR1 signal. That process is killed with a 9 signal, as it's |
|
assumed to be hung in some un-fixable way. |
|
|
|
=item Finished checking children |
|
|
|
Master processs's USR1 processing is cojmplete. |
|
|
|
=item (Red) CRITICAL: ------- Starting ------ |
|
|
|
(There are more '-'s on either side). Lond has forked itself off to |
|
form a new session and is about to start actual initialization. |
|
|
|
=item (Green) Attempting to start child (<client>) |
|
|
|
Started a new child process for <client>. Client is IO::Socket object |
|
connected to the child. This was as a result of a TCP/IP connection from a client. |
|
|
|
=item Unable to determine who caller was, getpeername returned nothing |
|
|
|
In child process initialization. either getpeername returned undef or |
|
a zero sized object was returned. Processing continues, but in my opinion, |
|
this should be cause for the child to exit. |
|
|
|
=item Unable to determine clientip |
|
|
|
In child process initialization. The peer address from getpeername was not defined. |
|
The client address is stored as "Unavailable" and processing continues. |
|
|
|
=item (Yellow) INFO: Connection <ip> <name> connection type = <type> |
|
|
|
In child initialization. A good connectionw as received from <ip>. |
|
|
|
=over 2 |
|
|
|
=item <name> |
|
|
|
is the name of the client from hosts.tab. |
|
|
|
=item <type> |
|
|
|
Is the connection type which is either |
|
|
|
=over 2 |
|
|
|
=item manager |
|
|
|
The connection is from a manager node, not in hosts.tab |
|
|
|
=item client |
|
|
|
the connection is from a non-manager in the hosts.tab |
|
|
|
=item both |
|
|
|
The connection is from a manager in the hosts.tab. |
|
|
|
=back |
|
|
|
=back |
|
|
|
=item (Blue) Certificates not installed -- trying insecure auth |
|
|
|
One of the certificate file, key file or |
|
certificate authority file could not be found for a client attempting |
|
SSL connection intiation. COnnection will be attemptied in in-secure mode. |
|
(this would be a system with an up to date lond that has not gotten a |
|
certificate from us). |
|
|
|
=item (Green) Successful local authentication |
|
|
|
A local connection successfully negotiated the encryption key. |
|
In this case the IDEA key is in a file (that is hopefully well protected). |
|
|
|
=item (Green) Successful ssl authentication with <client> |
|
|
|
The client (<client> is the peer's name in hosts.tab), has successfully |
|
negotiated an SSL connection with this child process. |
|
|
|
=item (Green) Successful insecure authentication with <client> |
|
|
|
|
|
The client has successfully negotiated an insecure connection withthe child process. |
|
|
|
=item (Yellow) Attempted insecure connection disallowed |
|
|
|
The client attempted and failed to successfully negotiate a successful insecure |
|
connection. This can happen either because the variable londAllowInsecure is false |
|
or undefined, or becuse the child did not successfully echo back the challenge |
|
string. |
|
|
|
|
|
=back |
|
|
|
|
|
=cut |