version 1.13, 2000/06/29 20:43:03
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version 1.219, 2004/07/29 22:31:18
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#!/usr/bin/perl |
#!/usr/bin/perl |
# The LearningOnline Network |
# The LearningOnline Network |
# lond "LON Daemon" Server (port "LOND" 5663) |
# lond "LON Daemon" Server (port "LOND" 5663) |
# 5/26/99,6/4,6/10,6/11,6/14,6/15,6/26,6/28,6/30, |
# |
# 7/8,7/9,7/10,7/12,7/17,7/19,9/21, |
# $Id$ |
# 10/7,10/8,10/9,10/11,10/13,10/15,11/4,11/16, |
# |
# 12/7,12/15,01/06,01/11,01/12,01/14,2/8, |
# Copyright Michigan State University Board of Trustees |
# 03/07,05/31 Gerd Kortemeyer |
# |
# 06/26 Scott Harrison |
# This file is part of the LearningOnline Network with CAPA (LON-CAPA). |
# 06/29 Gerd Kortemeyer |
# |
# |
# LON-CAPA is free software; you can redistribute it and/or modify |
# based on "Perl Cookbook" ISBN 1-56592-243-3 |
# it under the terms of the GNU General Public License as published by |
# preforker - server who forks first |
# the Free Software Foundation; either version 2 of the License, or |
# runs as a daemon |
# (at your option) any later version. |
# HUPs |
# |
# uses IDEA encryption |
# LON-CAPA is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with LON-CAPA; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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# |
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# /home/httpd/html/adm/gpl.txt |
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# |
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# http://www.lon-capa.org/ |
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# |
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use strict; |
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use lib '/home/httpd/lib/perl/'; |
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use LONCAPA::Configuration; |
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use IO::Socket; |
use IO::Socket; |
use IO::File; |
use IO::File; |
use Apache::File; |
#use Apache::File; |
use Symbol; |
use Symbol; |
use POSIX; |
use POSIX; |
use Crypt::IDEA; |
use Crypt::IDEA; |
use LWP::UserAgent(); |
use LWP::UserAgent(); |
use GDBM_File; |
use GDBM_File; |
use Authen::Krb4; |
use Authen::Krb4; |
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use Authen::Krb5; |
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use lib '/home/httpd/lib/perl/'; |
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use localauth; |
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use localenroll; |
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use File::Copy; |
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use LONCAPA::ConfigFileEdit; |
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use LONCAPA::lonlocal; |
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use LONCAPA::lonssl; |
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my $DEBUG = 0; # Non zero to enable debug log entries. |
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my $status=''; |
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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 $clientdns; # DNS name of client. |
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my $clientname; # LonCAPA name of client. |
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my $server; |
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my $thisserver; # DNS of us. |
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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 %hostid; # ID's for hosts in cluster by ip. |
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my %hostdom; # LonCAPA domain for hosts in cluster. |
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my %hostip; # IPs for hosts in cluster. |
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my %hostdns; # ID's of hosts looked up by DNS name. |
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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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"lcpasswd must be run as user 'www'", |
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"lcpasswd got incorrect number of arguments", |
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"lcpasswd did not get the right nubmer of input text lines", |
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"lcpasswd too many simultaneous pwd changes in progress", |
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"lcpasswd User does not exist.", |
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"lcpasswd Incorrect current passwd", |
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"lcpasswd Unable to su to root.", |
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"lcpasswd Cannot set new passwd.", |
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"lcpasswd Username has invalid characters", |
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"lcpasswd Invalid characters in password", |
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"11", "12", |
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"lcpasswd Password mismatch"); |
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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 Usrname 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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# ------------------------------------ Read httpd access.conf and get variables |
# |
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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 $Failures = 0; # Number of transcations failed. |
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open (CONFIG,"/etc/httpd/conf/access.conf") || die "Can't read access.conf"; |
# ResetStatistics: |
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# Resets the statistics counters: |
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# |
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sub ResetStatistics { |
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$Transactions = 0; |
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$Failures = 0; |
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} |
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while ($configline=<CONFIG>) { |
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if ($configline =~ /PerlSetVar/) { |
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my ($dummy,$varname,$varvalue)=split(/\s+/,$configline); |
#------------------------------------------------------------------------ |
chomp($varvalue); |
# |
$perlvar{$varname}=$varvalue; |
# 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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# Implicit inputs: |
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# $clientdns - The DNS name of the remote client. |
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# $thisserver - Our DNS name. |
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# |
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# Returns: |
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# IDEA session key on success. |
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# undef on failure. |
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# |
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sub LocalConnection { |
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my ($Socket, $initcmd) = @_; |
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Debug("Attempting local connection: $initcmd client: $clientdns me: $thisserver"); |
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if($clientdns ne $thisserver) { |
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&logthis('<font color="red"> LocalConnection rejecting non local: ' |
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."$clientdns ne $thisserver </font>"); |
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close $Socket; |
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return undef; |
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} |
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else { |
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chomp($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; |
} |
} |
} |
} |
close(CONFIG); |
#------------------------------------------------------------------------------ |
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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 $Socket = shift; |
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$PREFORK=4; # number of children to maintain, at least four spare |
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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$Certificate) = lonssl::CertificateFile(); |
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# ------------------------------------------------------------- Read hosts file |
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open (CONFIG,"$perlvar{'lonTabDir'}/hosts.tab") || die "Can't read host file"; |
# 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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} |
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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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# 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 $hostip{$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{$hostip{$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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# The file must exist: |
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if(-e $oldfile) { |
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# Read the old file. |
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my $oldfh = IO::File->new("< $oldfile"); |
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if(!$oldfh) { |
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return 0; |
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} |
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my @contents = <$oldfh>; # Suck in the entire file. |
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# write the backup file: |
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my $newfh = IO::File->new("> $newfile"); |
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if(!(defined $newfh)){ |
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return 0; |
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} |
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my $lines = scalar @contents; |
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for (my $i =0; $i < $lines; $i++) { |
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print $newfh ($contents[$i]); |
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} |
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$oldfh->close; |
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$newfh->close; |
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chmod(0660, $newfile); |
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return 1; |
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} else { |
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return 0; |
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} |
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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 |
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# (one of host or domain at this point) into a |
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# configuration file pathname. |
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# |
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# Parameters: |
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# selector - Configuration file selector. |
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# Returns: |
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# Full path to the file or undef if the selector is invalid. |
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# |
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sub ConfigFileFromSelector { |
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my $selector = shift; |
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my $tablefile; |
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my $tabledir = $perlvar{'lonTabDir'}.'/'; |
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if ($selector eq "hosts") { |
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$tablefile = $tabledir."hosts.tab"; |
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} elsif ($selector eq "domain") { |
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$tablefile = $tabledir."domain.tab"; |
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} else { |
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return undef; |
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} |
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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,$ip,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine); |
|
my $BinaryIp = gethostbyname($name); |
|
my $ip = inet_ntoa($ip); |
|
# |
|
# 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, $ip, $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 ($request, $filetype, $script) = split(/:/, $request,3); # : in script |
|
|
|
# Check the pre-coditions for success: |
|
|
|
if($request != "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"; |
|
} |
|
|
|
#--------------------------------------------------------------- |
|
# |
|
# Manipulation of hash based databases (factoring out common code |
|
# for later use as we refactor. |
|
# |
|
# Ties a domain level resource file to a hash. |
|
# If requested a history entry is created in the associated hist file. |
|
# |
|
# Parameters: |
|
# domain - Name of the domain in which the resource file lives. |
|
# namespace - Name of the hash within that domain. |
|
# how - How to tie the hash (e.g. GDBM_WRCREAT()). |
|
# loghead - Optional parameter, if present a log entry is created |
|
# in the associated history file and this is the first part |
|
# of that entry. |
|
# logtail - Goes along with loghead, The actual logentry is of the |
|
# form $loghead:<timestamp>:logtail. |
|
# Returns: |
|
# Reference to a hash bound to the db file or alternatively undef |
|
# if the tie failed. |
|
# |
|
sub tie_domain_hash { |
|
my ($domain,$namespace,$how,$loghead,$logtail) = @_; |
|
|
|
# Filter out any whitespace in the domain name: |
|
|
|
$domain =~ s/\W//g; |
|
|
|
# We have enough to go on to tie the hash: |
|
|
|
my $user_top_dir = $perlvar{'lonUsersDir'}; |
|
my $domain_dir = $user_top_dir."/$domain"; |
|
my $resource_file = $domain_dir."/$namespace.db"; |
|
my %hash; |
|
if(tie(%hash, 'GDBM_File', $resource_file, $how, 0640)) { |
|
if (defined($loghead)) { # Need to log the operation. |
|
my $logFh = IO::File->new(">>$domain_dir/$namespace.hist"); |
|
if($logFh) { |
|
my $timestamp = time; |
|
print $logFh "$loghead:$timestamp:$logtail\n"; |
|
} |
|
$logFh->close; |
|
} |
|
return \%hash; # Return the tied hash. |
|
} else { |
|
return undef; # Tie failed. |
|
} |
|
} |
|
|
|
# |
|
# Ties a user's resource file to a hash. |
|
# If necessary, an appropriate history |
|
# log file entry is made as well. |
|
# This sub factors out common code from the subs that manipulate |
|
# the various gdbm files that keep keyword value pairs. |
|
# Parameters: |
|
# domain - Name of the domain the user is in. |
|
# user - Name of the 'current user'. |
|
# namespace - Namespace representing the file to tie. |
|
# how - What the tie is done to (e.g. GDBM_WRCREAT(). |
|
# loghead - Optional first part of log entry if there may be a |
|
# history file. |
|
# what - Optional tail of log entry if there may be a history |
|
# file. |
|
# Returns: |
|
# hash to which the database is tied. It's up to the caller to untie. |
|
# undef if the has could not be tied. |
|
# |
|
sub tie_user_hash { |
|
my ($domain,$user,$namespace,$how,$loghead,$what) = @_; |
|
|
|
$namespace=~s/\//\_/g; # / -> _ |
|
$namespace=~s/\W//g; # whitespace eliminated. |
|
my $proname = propath($domain, $user); |
|
|
|
# Tie the database. |
|
|
|
my %hash; |
|
if(tie(%hash, 'GDBM_File', "$proname/$namespace.db", |
|
$how, 0640)) { |
|
# If this is a namespace for which a history is kept, |
|
# make the history log entry: |
|
if (($namespace =~/^nohist\_/) && (defined($loghead))) { |
|
my $args = scalar @_; |
|
Debug(" Opening history: $namespace $args"); |
|
my $hfh = IO::File->new(">>$proname/$namespace.hist"); |
|
if($hfh) { |
|
my $now = time; |
|
print $hfh "$loghead:$now:$what\n"; |
|
} |
|
$hfh->close; |
|
} |
|
return \%hash; |
|
} else { |
|
return undef; |
|
} |
|
|
|
} |
|
|
|
#--------------------- 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\n","$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=&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, "$buildkey\n", "$cmd:$tail"); |
|
|
|
return 1; |
|
|
while ($configline=<CONFIG>) { |
|
my ($id,$domain,$role,$name,$ip)=split(/:/,$configline); |
|
chomp($ip); |
|
$hostid{$ip}=$id; |
|
if ($id eq $perlvar{'lonHostID'}) { $thisserver=$name; } |
|
$PREFORK++; |
|
} |
} |
close(CONFIG); |
®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\n", "$cmd:$tail"); |
|
|
|
return 1; |
|
} |
|
register_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 $userloadpercent=&userload(); |
|
&Reply($replyfd, "$userloadpercent\n", "$cmd:$tail"); |
|
|
|
return 1; |
|
} |
|
register_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:$tail"; |
|
|
|
# Pull the domain and username out of the command tail. |
|
# and call GetAuthType to determine the authentication type. |
|
|
|
my ($udom,$uname)=split(/:/,$tail); |
|
my $result = &GetAuthType($udom, $uname); |
|
if($result eq "nouser") { |
|
&Failure( $replyfd, "unknown_user\n", $userinput); |
|
} else { |
|
# |
|
# We only want to pass the second field from GetAuthType |
|
# for ^krb.. otherwise we'll be handing out the encrypted |
|
# password for internals e.g. |
|
# |
|
my ($type,$otherinfo) = split(/:/,$result); |
|
if($type =~ /^krb/) { |
|
$type = $result; |
|
} |
|
&Reply( $replyfd, "$type\n", $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\n", $userinput); |
|
|
|
} else { |
|
&Failure( $client, "refused\n", $userinput); |
|
} |
|
return 1; |
|
} |
|
®ister_handler("pushfile", \&push_file_handler, 1, 0, 1); |
|
|
|
|
|
|
|
# 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\n", $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; |
|
} |
|
register_handler("edit", \&edit_table_handler, 1, 0, 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 $wasenc = 0; # True if request was encrypted. |
|
# ------------------------------------------------------------ See if encrypted |
|
if ($userinput =~ /^enc/) { |
|
$userinput = decipher($userinput); |
|
$wasenc=1; |
|
if(!$userinput) { # Cipher not defined. |
|
&Failure($client, "error: Encrypted data without negotated key"); |
|
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; |
|
} |
|
|
|
} |
|
|
|
#------------------- Commands not yet in spearate handlers. -------------- |
|
|
|
|
|
# ------------------------------------------------------------------------ auth |
|
if ($userinput =~ /^auth/) { # Encoded and client only. |
|
if (($wasenc==1) && isClient) { |
|
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') { |
|
&Debug("Internal auth"); |
|
$pwdcorrect= |
|
(crypt($upass,$contentpwd) eq $contentpwd); |
|
} elsif ($howpwd eq 'unix') { |
|
&Debug("Unix auth"); |
|
if((getpwnam($uname))[1] eq "") { #no such user! |
|
$pwdcorrect = 0; |
|
} else { |
|
$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') { |
|
my $null=pack("C",0); |
|
unless ($upass=~/$null/) { |
|
my $krb4_error = &Authen::Krb4::get_pw_in_tkt |
|
($uname,"",$contentpwd,'krbtgt', |
|
$contentpwd,1,$upass); |
|
if (!$krb4_error) { |
|
$pwdcorrect = 1; |
|
} else { |
|
$pwdcorrect=0; |
|
# log error if it is not a bad password |
|
if ($krb4_error != 62) { |
|
&logthis('krb4:'.$uname.','. |
|
&Authen::Krb4::get_err_txt($Authen::Krb4::error)); |
|
} |
|
} |
|
} |
|
} elsif ($howpwd eq 'krb5') { |
|
my $null=pack("C",0); |
|
unless ($upass=~/$null/) { |
|
my $krbclient=&Authen::Krb5::parse_name($uname.'@'.$contentpwd); |
|
my $krbservice="krbtgt/".$contentpwd."\@".$contentpwd; |
|
my $krbserver=&Authen::Krb5::parse_name($krbservice); |
|
my $credentials=&Authen::Krb5::cc_default(); |
|
$credentials->initialize($krbclient); |
|
my $krbreturn = |
|
&Authen::Krb5::get_in_tkt_with_password( |
|
$krbclient,$krbserver,$upass,$credentials); |
|
# unless ($krbreturn) { |
|
# &logthis("Krb5 Error: ". |
|
# &Authen::Krb5::error()); |
|
# } |
|
$pwdcorrect = ($krbreturn == 1); |
|
} 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 { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ---------------------------------------------------------------------- passwd |
|
} elsif ($userinput =~ /^passwd/) { # encoded and client |
|
if (($wasenc==1) && isClient) { |
|
my |
|
($cmd,$udom,$uname,$upass,$npass)=split(/:/,$userinput); |
|
chomp($npass); |
|
$upass=&unescape($upass); |
|
$npass=&unescape($npass); |
|
&Debug("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') { |
|
&Debug("internal auth"); |
|
if (crypt($upass,$contentpwd) eq $contentpwd) { |
|
my $salt=time; |
|
$salt=substr($salt,6,2); |
|
my $ncpass=crypt($npass,$salt); |
|
{ |
|
my $pf; |
|
if ($pf = IO::File->new(">$passfilename")) { |
|
print $pf "internal:$ncpass\n"; |
|
&logthis("Result of password change for $uname: pwchange_success"); |
|
print $client "ok\n"; |
|
} else { |
|
&logthis("Unable to open $uname passwd to change password"); |
|
print $client "non_authorized\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 |
|
&Debug("auth is unix"); |
|
$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; |
|
&Debug("exited pwauth with $? ($uname,$upass) "); |
|
$pwdcorrect=($? == 0); |
|
} |
|
if ($pwdcorrect) { |
|
my $execdir=$perlvar{'lonDaemons'}; |
|
&Debug("Opening lcpasswd pipeline"); |
|
my $pf = IO::File->new("|$execdir/lcpasswd > $perlvar{'lonDaemons'}/logs/lcpasswd.log"); |
|
print $pf "$uname\n$npass\n$npass\n"; |
|
close $pf; |
|
my $err = $?; |
|
my $result = ($err>0 ? 'pwchange_failure' |
|
: 'ok'); |
|
&logthis("Result of password change for $uname: ". |
|
&lcpasswdstrerror($?)); |
|
print $client "$result\n"; |
|
} else { |
|
print $client "non_authorized\n"; |
|
} |
|
} else { |
|
print $client "auth_mode_error\n"; |
|
} |
|
} else { |
|
print $client "unknown_user\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# -------------------------------------------------------------------- makeuser |
|
} elsif ($userinput =~ /^makeuser/) { # encoded and client. |
|
&Debug("Make user received"); |
|
my $oldumask=umask(0077); |
|
if (($wasenc==1) && isClient) { |
|
my |
|
($cmd,$udom,$uname,$umode,$npass)=split(/:/,$userinput); |
|
&Debug("cmd =".$cmd." $udom =".$udom. |
|
" uname=".$uname); |
|
chomp($npass); |
|
$npass=&unescape($npass); |
|
my $proname=propath($udom,$uname); |
|
my $passfilename="$proname/passwd"; |
|
&Debug("Password file created will be:". |
|
$passfilename); |
|
if (-e $passfilename) { |
|
print $client "already_exists\n"; |
|
} elsif ($udom ne $currentdomainid) { |
|
print $client "not_right_domain\n"; |
|
} else { |
|
my @fpparts=split(/\//,$proname); |
|
my $fpnow=$fpparts[0].'/'.$fpparts[1].'/'.$fpparts[2]; |
|
my $fperror=''; |
|
for (my $i=3;$i<=$#fpparts;$i++) { |
|
$fpnow.='/'.$fpparts[$i]; |
|
unless (-e $fpnow) { |
|
unless (mkdir($fpnow,0777)) { |
|
$fperror="error: ".($!+0) |
|
." mkdir failed while attempting " |
|
."makeuser"; |
|
} |
|
} |
|
} |
|
unless ($fperror) { |
|
my $result=&make_passwd_file($uname, $umode,$npass, |
|
$passfilename); |
|
print $client $result; |
|
} else { |
|
print $client "$fperror\n"; |
|
} |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
umask($oldumask); |
|
# -------------------------------------------------------------- changeuserauth |
|
} elsif ($userinput =~ /^changeuserauth/) { # encoded & client |
|
&Debug("Changing authorization"); |
|
if (($wasenc==1) && isClient) { |
|
my |
|
($cmd,$udom,$uname,$umode,$npass)=split(/:/,$userinput); |
|
chomp($npass); |
|
&Debug("cmd = ".$cmd." domain= ".$udom. |
|
"uname =".$uname." umode= ".$umode); |
|
$npass=&unescape($npass); |
|
my $proname=&propath($udom,$uname); |
|
my $passfilename="$proname/passwd"; |
|
if ($udom ne $currentdomainid) { |
|
print $client "not_right_domain\n"; |
|
} else { |
|
my $result=&make_passwd_file($uname, $umode,$npass, |
|
$passfilename); |
|
print $client $result; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ------------------------------------------------------------------------ home |
|
} elsif ($userinput =~ /^home/) { # client clear or encoded |
|
if(isClient) { |
|
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"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ---------------------------------------------------------------------- update |
|
} elsif ($userinput =~ /^update/) { # client clear or encoded. |
|
if(isClient) { |
|
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); |
|
my $now=time; |
|
my $since=$now-$atime; |
|
if ($since>$perlvar{'lonExpire'}) { |
|
my $reply= |
|
&reply("unsub:$fname","$clientname"); |
|
unlink("$fname"); |
|
} else { |
|
my $transname="$fname.in.transfer"; |
|
my $remoteurl= |
|
&reply("sub:$fname","$clientname"); |
|
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"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# -------------------------------------- fetch a user file from a remote server |
|
} elsif ($userinput =~ /^fetchuserfile/) { # Client clear or enc. |
|
if(isClient) { |
|
my ($cmd,$fname)=split(/:/,$userinput); |
|
my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|); |
|
my $udir=propath($udom,$uname).'/userfiles'; |
|
unless (-e $udir) { mkdir($udir,0770); } |
|
if (-e $udir) { |
|
$ufile=~s/^[\.\~]+//; |
|
my $path = $udir; |
|
if ($ufile =~m|(.+)/([^/]+)$|) { |
|
my @parts=split('/',$1); |
|
foreach my $part (@parts) { |
|
$path .= '/'.$part; |
|
if ((-e $path)!=1) { |
|
mkdir($path,0770); |
|
} |
|
} |
|
} |
|
my $destname=$udir.'/'.$ufile; |
|
my $transname=$udir.'/'.$ufile.'.in.transit'; |
|
my $remoteurl='http://'.$clientip.'/userfiles/'.$fname; |
|
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)"); |
|
print $client "failed\n"; |
|
} else { |
|
if (!rename($transname,$destname)) { |
|
&logthis("Unable to move $transname to $destname"); |
|
unlink($transname); |
|
print $client "failed\n"; |
|
} else { |
|
print $client "ok\n"; |
|
} |
|
} |
|
} else { |
|
print $client "not_home\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
} |
|
# --------------------------------------------------------- remove a user file |
|
} elsif ($userinput =~ /^removeuserfile/) { # Client clear or enc. |
|
if(isClient) { |
|
my ($cmd,$fname)=split(/:/,$userinput); |
|
my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|); |
|
&logthis("$udom - $uname - $ufile"); |
|
if ($ufile =~m|/\.\./|) { |
|
# any files paths with /../ in them refuse |
|
# to deal with |
|
print $client "refused\n"; |
|
} else { |
|
my $udir=propath($udom,$uname); |
|
if (-e $udir) { |
|
my $file=$udir.'/userfiles/'.$ufile; |
|
if (-e $file) { |
|
unlink($file); |
|
if (-e $file) { |
|
print $client "failed\n"; |
|
} else { |
|
print $client "ok\n"; |
|
} |
|
} else { |
|
print $client "not_found\n"; |
|
} |
|
} else { |
|
print $client "not_home\n"; |
|
} |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
} |
|
# ------------------------------------------ authenticate access to a user file |
|
} elsif ($userinput =~ /^tokenauthuserfile/) { # Client only |
|
if(isClient) { |
|
my ($cmd,$fname,$session)=split(/:/,$userinput); |
|
chomp($session); |
|
my $reply='non_auth'; |
|
if (open(ENVIN,$perlvar{'lonIDsDir'}.'/'. |
|
$session.'.id')) { |
|
while (my $line=<ENVIN>) { |
|
if ($line=~ m|userfile\.\Q$fname\E\=|) { $reply='ok'; } |
|
} |
|
close(ENVIN); |
|
print $client $reply."\n"; |
|
} else { |
|
print $client "invalid_token\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ----------------------------------------------------------------- unsubscribe |
|
} elsif ($userinput =~ /^unsub/) { |
|
if(isClient) { |
|
my ($cmd,$fname)=split(/:/,$userinput); |
|
if (-e $fname) { |
|
print $client &unsub($fname,$clientip); |
|
} else { |
|
print $client "not_found\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ------------------------------------------------------------------- subscribe |
|
} elsif ($userinput =~ /^sub/) { |
|
if(isClient) { |
|
print $client &subscribe($userinput,$clientip); |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ------------------------------------------------------------- current version |
|
} elsif ($userinput =~ /^currentversion/) { |
|
if(isClient) { |
|
my ($cmd,$fname)=split(/:/,$userinput); |
|
print $client ¤tversion($fname)."\n"; |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ------------------------------------------------------------------------- log |
|
} elsif ($userinput =~ /^log/) { |
|
if(isClient) { |
|
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:$clientname:$what\n"; |
|
print $client "ok\n"; |
|
} else { |
|
print $client "error: ".($!+0) |
|
." IO::File->new Failed " |
|
."while attempting log\n"; |
|
} |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ------------------------------------------------------------------------- put |
|
} elsif ($userinput =~ /^put/) { |
|
if(isClient) { |
|
my ($cmd,$udom,$uname,$namespace,$what) |
|
=split(/:/,$userinput,5); |
|
$namespace=~s/\//\_/g; |
|
$namespace=~s/\W//g; |
|
if ($namespace ne 'roles') { |
|
chomp($what); |
|
my $proname=propath($udom,$uname); |
|
my $now=time; |
|
my @pairs=split(/\&/,$what); |
|
my %hash; |
|
if (tie(%hash,'GDBM_File', |
|
"$proname/$namespace.db", |
|
&GDBM_WRCREAT(),0640)) { |
|
unless ($namespace=~/^nohist\_/) { |
|
my $hfh; |
|
if ($hfh=IO::File->new(">>$proname/$namespace.hist")) { print $hfh "P:$now:$what\n"; } |
|
} |
|
|
|
foreach my $pair (@pairs) { |
|
my ($key,$value)=split(/=/,$pair); |
|
$hash{$key}=$value; |
|
} |
|
if (untie(%hash)) { |
|
print $client "ok\n"; |
|
} else { |
|
print $client "error: ".($!+0) |
|
." untie(GDBM) failed ". |
|
"while attempting put\n"; |
|
} |
|
} else { |
|
print $client "error: ".($!) |
|
." tie(GDBM) Failed ". |
|
"while attempting put\n"; |
|
} |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ------------------------------------------------------------------- inc |
|
} elsif ($userinput =~ /^inc:/) { |
|
if(isClient) { |
|
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; |
|
my @pairs=split(/\&/,$what); |
|
my %hash; |
|
if (tie(%hash,'GDBM_File', |
|
"$proname/$namespace.db", |
|
&GDBM_WRCREAT(),0640)) { |
|
unless ($namespace=~/^nohist\_/) { |
|
my $hfh; |
|
if ($hfh=IO::File->new(">>$proname/$namespace.hist")) { print $hfh "P:$now:$what\n"; } |
|
} |
|
foreach my $pair (@pairs) { |
|
my ($key,$value)=split(/=/,$pair); |
|
# We could check that we have a number... |
|
if (! defined($value) || $value eq '') { |
|
$value = 1; |
|
} |
|
$hash{$key}+=$value; |
|
} |
|
if (untie(%hash)) { |
|
print $client "ok\n"; |
|
} else { |
|
print $client "error: ".($!+0) |
|
." untie(GDBM) failed ". |
|
"while attempting inc\n"; |
|
} |
|
} else { |
|
print $client "error: ".($!) |
|
." tie(GDBM) Failed ". |
|
"while attempting inc\n"; |
|
} |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# -------------------------------------------------------------------- rolesput |
|
} elsif ($userinput =~ /^rolesput/) { |
|
if(isClient) { |
|
&Debug("rolesput"); |
|
if ($wasenc==1) { |
|
my ($cmd,$exedom,$exeuser,$udom,$uname,$what) |
|
=split(/:/,$userinput); |
|
&Debug("cmd = ".$cmd." exedom= ".$exedom. |
|
"user = ".$exeuser." udom=".$udom. |
|
"what = ".$what); |
|
my $namespace='roles'; |
|
chomp($what); |
|
my $proname=propath($udom,$uname); |
|
my $now=time; |
|
my @pairs=split(/\&/,$what); |
|
my %hash; |
|
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) { |
|
{ |
|
my $hfh; |
|
if ($hfh=IO::File->new(">>$proname/$namespace.hist")) { |
|
print $hfh "P:$now:$exedom:$exeuser:$what\n"; |
|
} |
|
} |
|
|
|
foreach my $pair (@pairs) { |
|
my ($key,$value)=split(/=/,$pair); |
|
&ManagePermissions($key, $udom, $uname, |
|
&GetAuthType( $udom, |
|
$uname)); |
|
$hash{$key}=$value; |
|
} |
|
if (untie(%hash)) { |
|
print $client "ok\n"; |
|
} else { |
|
print $client "error: ".($!+0) |
|
." untie(GDBM) Failed ". |
|
"while attempting rolesput\n"; |
|
} |
|
} else { |
|
print $client "error: ".($!+0) |
|
." tie(GDBM) Failed ". |
|
"while attempting rolesput\n"; |
|
} |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# -------------------------------------------------------------------- rolesdel |
|
} elsif ($userinput =~ /^rolesdel/) { |
|
if(isClient) { |
|
&Debug("rolesdel"); |
|
if ($wasenc==1) { |
|
my ($cmd,$exedom,$exeuser,$udom,$uname,$what) |
|
=split(/:/,$userinput); |
|
&Debug("cmd = ".$cmd." exedom= ".$exedom. |
|
"user = ".$exeuser." udom=".$udom. |
|
"what = ".$what); |
|
my $namespace='roles'; |
|
chomp($what); |
|
my $proname=propath($udom,$uname); |
|
my $now=time; |
|
my @rolekeys=split(/\&/,$what); |
|
my %hash; |
|
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) { |
|
{ |
|
my $hfh; |
|
if ($hfh=IO::File->new(">>$proname/$namespace.hist")) { |
|
print $hfh "D:$now:$exedom:$exeuser:$what\n"; |
|
} |
|
} |
|
foreach my $key (@rolekeys) { |
|
delete $hash{$key}; |
|
} |
|
if (untie(%hash)) { |
|
print $client "ok\n"; |
|
} else { |
|
print $client "error: ".($!+0) |
|
." untie(GDBM) Failed ". |
|
"while attempting rolesdel\n"; |
|
} |
|
} else { |
|
print $client "error: ".($!+0) |
|
." tie(GDBM) Failed ". |
|
"while attempting rolesdel\n"; |
|
} |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ------------------------------------------------------------------------- get |
|
} elsif ($userinput =~ /^get/) { |
|
if(isClient) { |
|
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=''; |
|
my %hash; |
|
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) { |
|
for (my $i=0;$i<=$#queries;$i++) { |
|
$qresult.="$hash{$queries[$i]}&"; |
|
} |
|
if (untie(%hash)) { |
|
$qresult=~s/\&$//; |
|
print $client "$qresult\n"; |
|
} else { |
|
print $client "error: ".($!+0) |
|
." untie(GDBM) Failed ". |
|
"while attempting get\n"; |
|
} |
|
} else { |
|
if ($!+0 == 2) { |
|
print $client "error:No such file or ". |
|
"GDBM reported bad block error\n"; |
|
} else { |
|
print $client "error: ".($!+0) |
|
." tie(GDBM) Failed ". |
|
"while attempting get\n"; |
|
} |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ------------------------------------------------------------------------ eget |
|
} elsif ($userinput =~ /^eget/) { |
|
if (isClient) { |
|
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=''; |
|
my %hash; |
|
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) { |
|
for (my $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: ".($!+0) |
|
." untie(GDBM) Failed ". |
|
"while attempting eget\n"; |
|
} |
|
} else { |
|
print $client "error: ".($!+0) |
|
." tie(GDBM) Failed ". |
|
"while attempting eget\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ------------------------------------------------------------------------- del |
|
} elsif ($userinput =~ /^del/) { |
|
if(isClient) { |
|
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; |
|
my @keys=split(/\&/,$what); |
|
my %hash; |
|
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) { |
|
unless ($namespace=~/^nohist\_/) { |
|
my $hfh; |
|
if ($hfh=IO::File->new(">>$proname/$namespace.hist")) { print $hfh "D:$now:$what\n"; } |
|
} |
|
foreach my $key (@keys) { |
|
delete($hash{$key}); |
|
} |
|
if (untie(%hash)) { |
|
print $client "ok\n"; |
|
} else { |
|
print $client "error: ".($!+0) |
|
." untie(GDBM) Failed ". |
|
"while attempting del\n"; |
|
} |
|
} else { |
|
print $client "error: ".($!+0) |
|
." tie(GDBM) Failed ". |
|
"while attempting del\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ------------------------------------------------------------------------ keys |
|
} elsif ($userinput =~ /^keys/) { |
|
if(isClient) { |
|
my ($cmd,$udom,$uname,$namespace) |
|
=split(/:/,$userinput); |
|
$namespace=~s/\//\_/g; |
|
$namespace=~s/\W//g; |
|
my $proname=propath($udom,$uname); |
|
my $qresult=''; |
|
my %hash; |
|
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) { |
|
foreach my $key (keys %hash) { |
|
$qresult.="$key&"; |
|
} |
|
if (untie(%hash)) { |
|
$qresult=~s/\&$//; |
|
print $client "$qresult\n"; |
|
} else { |
|
print $client "error: ".($!+0) |
|
." untie(GDBM) Failed ". |
|
"while attempting keys\n"; |
|
} |
|
} else { |
|
print $client "error: ".($!+0) |
|
." tie(GDBM) Failed ". |
|
"while attempting keys\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ----------------------------------------------------------------- dumpcurrent |
|
} elsif ($userinput =~ /^currentdump/) { |
|
if (isClient) { |
|
my ($cmd,$udom,$uname,$namespace) |
|
=split(/:/,$userinput); |
|
$namespace=~s/\//\_/g; |
|
$namespace=~s/\W//g; |
|
my $qresult=''; |
|
my $proname=propath($udom,$uname); |
|
my %hash; |
|
if (tie(%hash,'GDBM_File', |
|
"$proname/$namespace.db", |
|
&GDBM_READER(),0640)) { |
|
# 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 %data = (); |
|
while (my ($key,$value) = each(%hash)) { |
|
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(%hash)) { |
|
while (my ($symb,$param_hash) = each(%data)) { |
|
while(my ($param,$value) = each (%$param_hash)){ |
|
next if ($param =~ /^v\./); |
|
$qresult.=$symb.':'.$param.'='.$value.'&'; |
|
} |
|
} |
|
chop($qresult); |
|
print $client "$qresult\n"; |
|
} else { |
|
print $client "error: ".($!+0) |
|
." untie(GDBM) Failed ". |
|
"while attempting currentdump\n"; |
|
} |
|
} else { |
|
print $client "error: ".($!+0) |
|
." tie(GDBM) Failed ". |
|
"while attempting currentdump\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
} |
|
# ------------------------------------------------------------------------ dump |
|
} elsif ($userinput =~ /^dump/) { |
|
if(isClient) { |
|
my ($cmd,$udom,$uname,$namespace,$regexp) |
|
=split(/:/,$userinput); |
|
$namespace=~s/\//\_/g; |
|
$namespace=~s/\W//g; |
|
if (defined($regexp)) { |
|
$regexp=&unescape($regexp); |
|
} else { |
|
$regexp='.'; |
|
} |
|
my $qresult=''; |
|
my $proname=propath($udom,$uname); |
|
my %hash; |
|
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER(),0640)) { |
|
while (my ($key,$value) = each(%hash)) { |
|
if ($regexp eq '.') { |
|
$qresult.=$key.'='.$value.'&'; |
|
} else { |
|
my $unescapeKey = &unescape($key); |
|
if (eval('$unescapeKey=~/$regexp/')) { |
|
$qresult.="$key=$value&"; |
|
} |
|
} |
|
} |
|
if (untie(%hash)) { |
|
chop($qresult); |
|
print $client "$qresult\n"; |
|
} else { |
|
print $client "error: ".($!+0) |
|
." untie(GDBM) Failed ". |
|
"while attempting dump\n"; |
|
} |
|
} else { |
|
print $client "error: ".($!+0) |
|
." tie(GDBM) Failed ". |
|
"while attempting dump\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ----------------------------------------------------------------------- store |
|
} elsif ($userinput =~ /^store/) { |
|
if(isClient) { |
|
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; |
|
my @pairs=split(/\&/,$what); |
|
my %hash; |
|
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT(),0640)) { |
|
unless ($namespace=~/^nohist\_/) { |
|
my $hfh; |
|
if ($hfh=IO::File->new(">>$proname/$namespace.hist")) { |
|
print $hfh "P:$now:$rid:$what\n"; |
|
} |
|
} |
|
my @previouskeys=split(/&/,$hash{"keys:$rid"}); |
|
my $key; |
|
$hash{"version:$rid"}++; |
|
my $version=$hash{"version:$rid"}; |
|
my $allkeys=''; |
|
foreach my $pair (@pairs) { |
|
my ($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: ".($!+0) |
|
." untie(GDBM) Failed ". |
|
"while attempting store\n"; |
|
} |
|
} else { |
|
print $client "error: ".($!+0) |
|
." tie(GDBM) Failed ". |
|
"while attempting store\n"; |
|
} |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# --------------------------------------------------------------------- restore |
|
} elsif ($userinput =~ /^restore/) { |
|
if(isClient) { |
|
my ($cmd,$udom,$uname,$namespace,$rid) |
|
=split(/:/,$userinput); |
|
$namespace=~s/\//\_/g; |
|
$namespace=~s/\W//g; |
|
chomp($rid); |
|
my $proname=propath($udom,$uname); |
|
my $qresult=''; |
|
my %hash; |
|
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: ".($!+0) |
|
." untie(GDBM) Failed ". |
|
"while attempting restore\n"; |
|
} |
|
} else { |
|
print $client "error: ".($!+0) |
|
." tie(GDBM) Failed ". |
|
"while attempting restore\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# -------------------------------------------------------------------- chatsend |
|
} elsif ($userinput =~ /^chatsend/) { |
|
if(isClient) { |
|
my ($cmd,$cdom,$cnum,$newpost)=split(/\:/,$userinput); |
|
&chatadd($cdom,$cnum,$newpost); |
|
print $client "ok\n"; |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# -------------------------------------------------------------------- chatretr |
|
} elsif ($userinput =~ /^chatretr/) { |
|
if(isClient) { |
|
my |
|
($cmd,$cdom,$cnum,$udom,$uname)=split(/\:/,$userinput); |
|
my $reply=''; |
|
foreach (&getchat($cdom,$cnum,$udom,$uname)) { |
|
$reply.=&escape($_).':'; |
|
} |
|
$reply=~s/\:$//; |
|
print $client $reply."\n"; |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ------------------------------------------------------------------- querysend |
|
} elsif ($userinput =~ /^querysend/) { |
|
if (isClient) { |
|
my ($cmd,$query, |
|
$arg1,$arg2,$arg3)=split(/\:/,$userinput); |
|
$query=~s/\n*$//g; |
|
print $client "". |
|
sqlreply("$clientname\&$query". |
|
"\&$arg1"."\&$arg2"."\&$arg3")."\n"; |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ------------------------------------------------------------------ queryreply |
|
} elsif ($userinput =~ /^queryreply/) { |
|
if(isClient) { |
|
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: ".($!+0) |
|
." IO::File->new Failed ". |
|
"while attempting queryreply\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ----------------------------------------------------------------- courseidput |
|
} elsif ($userinput =~ /^courseidput/) { |
|
if(isClient) { |
|
my ($cmd,$udom,$what)=split(/:/,$userinput); |
|
chomp($what); |
|
$udom=~s/\W//g; |
|
my $proname= |
|
"$perlvar{'lonUsersDir'}/$udom/nohist_courseids"; |
|
my $now=time; |
|
my @pairs=split(/\&/,$what); |
|
my %hash; |
|
if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_WRCREAT(),0640)) { |
|
foreach my $pair (@pairs) { |
|
my ($key,$descr,$inst_code)=split(/=/,$pair); |
|
$hash{$key}=$descr.':'.$inst_code.':'.$now; |
|
} |
|
if (untie(%hash)) { |
|
print $client "ok\n"; |
|
} else { |
|
print $client "error: ".($!+0) |
|
." untie(GDBM) Failed ". |
|
"while attempting courseidput\n"; |
|
} |
|
} else { |
|
print $client "error: ".($!+0) |
|
." tie(GDBM) Failed ". |
|
"while attempting courseidput\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ---------------------------------------------------------------- courseiddump |
|
} elsif ($userinput =~ /^courseiddump/) { |
|
if(isClient) { |
|
my ($cmd,$udom,$since,$description) |
|
=split(/:/,$userinput); |
|
if (defined($description)) { |
|
$description=&unescape($description); |
|
} else { |
|
$description='.'; |
|
} |
|
unless (defined($since)) { $since=0; } |
|
my $qresult=''; |
|
my $proname= |
|
"$perlvar{'lonUsersDir'}/$udom/nohist_courseids"; |
|
my %hash; |
|
if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_READER(),0640)) { |
|
while (my ($key,$value) = each(%hash)) { |
|
my ($descr,$lasttime,$inst_code); |
|
if ($value =~ m/^([^\:]*):([^\:]*):(\d+)$/) { |
|
($descr,$inst_code,$lasttime)=($1,$2,$3); |
|
} else { |
|
($descr,$lasttime) = split(/\:/,$value); |
|
} |
|
if ($lasttime<$since) { next; } |
|
if ($description eq '.') { |
|
$qresult.=$key.'='.$descr.':'.$inst_code.'&'; |
|
} else { |
|
my $unescapeVal = &unescape($descr); |
|
if (eval('$unescapeVal=~/\Q$description\E/i')) { |
|
$qresult.=$key.'='.$descr.':'.$inst_code.'&'; |
|
} |
|
} |
|
} |
|
if (untie(%hash)) { |
|
chop($qresult); |
|
print $client "$qresult\n"; |
|
} else { |
|
print $client "error: ".($!+0) |
|
." untie(GDBM) Failed ". |
|
"while attempting courseiddump\n"; |
|
} |
|
} else { |
|
print $client "error: ".($!+0) |
|
." tie(GDBM) Failed ". |
|
"while attempting courseiddump\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ----------------------------------------------------------------------- idput |
|
} elsif ($userinput =~ /^idput/) { |
|
if(isClient) { |
|
my ($cmd,$udom,$what)=split(/:/,$userinput); |
|
chomp($what); |
|
$udom=~s/\W//g; |
|
my $proname="$perlvar{'lonUsersDir'}/$udom/ids"; |
|
my $now=time; |
|
my @pairs=split(/\&/,$what); |
|
my %hash; |
|
if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_WRCREAT(),0640)) { |
|
{ |
|
my $hfh; |
|
if ($hfh=IO::File->new(">>$proname.hist")) { |
|
print $hfh "P:$now:$what\n"; |
|
} |
|
} |
|
foreach my $pair (@pairs) { |
|
my ($key,$value)=split(/=/,$pair); |
|
$hash{$key}=$value; |
|
} |
|
if (untie(%hash)) { |
|
print $client "ok\n"; |
|
} else { |
|
print $client "error: ".($!+0) |
|
." untie(GDBM) Failed ". |
|
"while attempting idput\n"; |
|
} |
|
} else { |
|
print $client "error: ".($!+0) |
|
." tie(GDBM) Failed ". |
|
"while attempting idput\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ----------------------------------------------------------------------- idget |
|
} elsif ($userinput =~ /^idget/) { |
|
if(isClient) { |
|
my ($cmd,$udom,$what)=split(/:/,$userinput); |
|
chomp($what); |
|
$udom=~s/\W//g; |
|
my $proname="$perlvar{'lonUsersDir'}/$udom/ids"; |
|
my @queries=split(/\&/,$what); |
|
my $qresult=''; |
|
my %hash; |
|
if (tie(%hash,'GDBM_File',"$proname.db",&GDBM_READER(),0640)) { |
|
for (my $i=0;$i<=$#queries;$i++) { |
|
$qresult.="$hash{$queries[$i]}&"; |
|
} |
|
if (untie(%hash)) { |
|
$qresult=~s/\&$//; |
|
print $client "$qresult\n"; |
|
} else { |
|
print $client "error: ".($!+0) |
|
." untie(GDBM) Failed ". |
|
"while attempting idget\n"; |
|
} |
|
} else { |
|
print $client "error: ".($!+0) |
|
." tie(GDBM) Failed ". |
|
"while attempting idget\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ---------------------------------------------------------------------- tmpput |
|
} elsif ($userinput =~ /^tmpput/) { |
|
if(isClient) { |
|
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 $client "error: ".($!+0) |
|
."IO::File->new Failed ". |
|
"while attempting tmpput\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
|
|
# ---------------------------------------------------------------------- tmpget |
|
} elsif ($userinput =~ /^tmpget/) { |
|
if(isClient) { |
|
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 $client "error: ".($!+0) |
|
."IO::File->new Failed ". |
|
"while attempting tmpget\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ---------------------------------------------------------------------- tmpdel |
|
} elsif ($userinput =~ /^tmpdel/) { |
|
if(isClient) { |
|
my ($cmd,$id)=split(/:/,$userinput); |
|
chomp($id); |
|
$id=~s/\W/\_/g; |
|
my $execdir=$perlvar{'lonDaemons'}; |
|
if (unlink("$execdir/tmp/$id.tmp")) { |
|
print $client "ok\n"; |
|
} else { |
|
print $client "error: ".($!+0) |
|
."Unlink tmp Failed ". |
|
"while attempting tmpdel\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ----------------------------------------- portfolio directory list (portls) |
|
} elsif ($userinput =~ /^portls/) { |
|
if(isClient) { |
|
my ($cmd,$uname,$udom)=split(/:/,$userinput); |
|
my $udir=propath($udom,$uname).'/userfiles/portfolio'; |
|
my $dirLine=''; |
|
my $dirContents=''; |
|
if (opendir(LSDIR,$udir.'/')){ |
|
while ($dirLine = readdir(LSDIR)){ |
|
$dirContents = $dirContents.$dirLine.'<br />'; |
|
} |
|
} else { |
|
$dirContents = "No directory found\n"; |
|
} |
|
print $client $dirContents."\n"; |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
} |
|
# -------------------------------------------------------------------------- ls |
|
} elsif ($userinput =~ /^ls/) { |
|
if(isClient) { |
|
my $obs; |
|
my $rights; |
|
my ($cmd,$ulsdir)=split(/:/,$userinput); |
|
my $ulsout=''; |
|
my $ulsfn; |
|
if (-e $ulsdir) { |
|
if(-d $ulsdir) { |
|
if (opendir(LSDIR,$ulsdir)) { |
|
while ($ulsfn=readdir(LSDIR)) { |
|
undef $obs, $rights; |
|
my @ulsstats=stat($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)|) { $obs = 1; } |
|
if($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'; } |
|
print $client "$ulsout\n"; |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ----------------------------------------------------------------- setannounce |
|
} elsif ($userinput =~ /^setannounce/) { |
|
if (isClient) { |
|
my ($cmd,$announcement)=split(/:/,$userinput); |
|
chomp($announcement); |
|
$announcement=&unescape($announcement); |
|
if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}. |
|
'/announcement.txt')) { |
|
print $store $announcement; |
|
close $store; |
|
print $client "ok\n"; |
|
} else { |
|
print $client "error: ".($!+0)."\n"; |
|
} |
|
} else { |
|
Reply($client, "refused\n", $userinput); |
|
|
|
} |
|
# ------------------------------------------------------------------ Hanging up |
|
} elsif (($userinput =~ /^exit/) || |
|
($userinput =~ /^init/)) { # no restrictions. |
|
&logthis( |
|
"Client $clientip ($clientname) hanging up: $userinput"); |
|
print $client "bye\n"; |
|
$client->shutdown(2); # shutdown the socket forcibly. |
|
$client->close(); |
|
return 0; |
|
|
|
# ---------------------------------- set current host/domain |
|
} elsif ($userinput =~ /^sethost:/) { |
|
if (isClient) { |
|
print $client &sethost($userinput)."\n"; |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
#---------------------------------- request file (?) version. |
|
} elsif ($userinput =~/^version:/) { |
|
if (isClient) { |
|
print $client &version($userinput)."\n"; |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
#------------------------------- is auto-enrollment enabled? |
|
} elsif ($userinput =~/^autorun:/) { |
|
if (isClient) { |
|
my ($cmd,$cdom) = split(/:/,$userinput); |
|
my $outcome = &localenroll::run($cdom); |
|
print $client "$outcome\n"; |
|
} else { |
|
print $client "0\n"; |
|
} |
|
#------------------------------- get official sections (for auto-enrollment). |
|
} elsif ($userinput =~/^autogetsections:/) { |
|
if (isClient) { |
|
my ($cmd,$coursecode,$cdom)=split(/:/,$userinput); |
|
my @secs = &localenroll::get_sections($coursecode,$cdom); |
|
my $seclist = &escape(join(':',@secs)); |
|
print $client "$seclist\n"; |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
#----------------------- validate owner of new course section (for auto-enrollment). |
|
} elsif ($userinput =~/^autonewcourse:/) { |
|
if (isClient) { |
|
my ($cmd,$inst_course_id,$owner,$cdom)=split(/:/,$userinput); |
|
my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom); |
|
print $client "$outcome\n"; |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
#-------------- validate course section in schedule of classes (for auto-enrollment). |
|
} elsif ($userinput =~/^autovalidatecourse:/) { |
|
if (isClient) { |
|
my ($cmd,$inst_course_id,$cdom)=split(/:/,$userinput); |
|
my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom); |
|
print $client "$outcome\n"; |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
#--------------------------- create password for new user (for auto-enrollment). |
|
} elsif ($userinput =~/^autocreatepassword:/) { |
|
if (isClient) { |
|
my ($cmd,$authparam,$cdom)=split(/:/,$userinput); |
|
my ($create_passwd,$authchk); |
|
($authparam,$create_passwd,$authchk) = &localenroll::create_password($authparam,$cdom); |
|
print $client &escape($authparam.':'.$create_passwd.':'.$authchk)."\n"; |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
#--------------------------- read and remove temporary files (for auto-enrollment). |
|
} elsif ($userinput =~/^autoretrieve:/) { |
|
if (isClient) { |
|
my ($cmd,$filename) = split(/:/,$userinput); |
|
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); |
|
print $client &escape($reply)."\n"; |
|
# unlink($source); |
|
} else { |
|
print $client "error\n"; |
|
} |
|
} else { |
|
print $client "error\n"; |
|
} |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
#--------------------- read and retrieve institutional code format (for support form). |
|
} elsif ($userinput =~/^autoinstcodeformat:/) { |
|
if (isClient) { |
|
my $reply; |
|
my($cmd,$cdom,$course) = split(/:/,$userinput); |
|
my @pairs = split/\&/,$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 = &hash2str(%codes); |
|
my $codetitles_str = &array2str(@codetitles); |
|
my $cat_titles_str = &hash2str(%cat_titles); |
|
my $cat_order_str = &hash2str(%cat_order); |
|
print $client $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':'.$cat_order_str."\n"; |
|
} |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
# ------------------------------------------------------------- unknown command |
|
|
|
} else { |
|
# unknown command |
|
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 |
|
sub catchexception { |
|
my ($error)=@_; |
|
$SIG{'QUIT'}='DEFAULT'; |
|
$SIG{__DIE__}='DEFAULT'; |
|
&status("Catching exception"); |
|
&logthis("<font color='red'>CRITICAL: " |
|
."ABNORMAL EXIT. Child $$ for server $thisserver died through " |
|
."a crash with this error msg->[$error]</font>"); |
|
&logthis('Famous last words: '.$status.' - '.$lastlog); |
|
if ($client) { print $client "error: $error\n"; } |
|
$server->close(); |
|
die($error); |
|
} |
|
|
|
sub timeout { |
|
&status("Handling Timeout"); |
|
&logthis("<font color='red'>CRITICAL: TIME OUT ".$$."</font>"); |
|
&catchexception('Timeout'); |
|
} |
|
# -------------------------------- Set signal handlers to record abnormal exits |
|
|
|
$SIG{'QUIT'}=\&catchexception; |
|
$SIG{__DIE__}=\&catchexception; |
|
|
|
# ---------------------------------- Read loncapa_apache.conf and loncapa.conf |
|
&status("Read loncapa.conf and loncapa_apache.conf"); |
|
my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf'); |
|
%perlvar=%{$perlvarref}; |
|
undef $perlvarref; |
|
|
|
# ----------------------------- Make sure this process is running from user=www |
|
my $wwwid=getpwnam('www'); |
|
if ($wwwid!=$<) { |
|
my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}"; |
|
my $subj="LON: $currenthostid User ID mismatch"; |
|
system("echo 'User ID mismatch. lond must be run as user www.' |\ |
|
mailto $emailto -s '$subj' > /dev/null"); |
|
exit 1; |
|
} |
|
|
|
# --------------------------------------------- Check if other instance running |
|
|
|
my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid"; |
|
|
|
if (-e $pidfile) { |
|
my $lfh=IO::File->new("$pidfile"); |
|
my $pide=<$lfh>; |
|
chomp($pide); |
|
if (kill 0 => $pide) { die "already running"; } |
|
} |
|
|
|
# ------------------------------------------------------------- Read hosts file |
|
|
|
|
|
|
# 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 65 $server = IO::Socket::INET->new(LocalPor
|
Line 3132 $server = IO::Socket::INET->new(LocalPor
|
|
|
# global variables |
# global variables |
|
|
$MAX_CLIENTS_PER_CHILD = 5; # 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"); |
$children --; |
my $pid; |
&logthis("Child $pid died"); |
do { |
delete $children{$pid}; |
$pid = waitpid(-1,&WNOHANG()); |
|
if (defined($children{$pid})) { |
|
&logthis("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 |
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; |
close($server); # free up socket |
&logthis("Free socket: ".shutdown($server,2)); # free up socket |
&logthis("<font color=red>CRITICAL: Restarting</font>"); |
&logthis("<font color='red'>CRITICAL: Restarting</font>"); |
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 |
} |
} |
|
|
|
# |
|
# Kill off hashes that describe the host table prior to re-reading it. |
|
# Hashes affected are: |
|
# %hostid, %hostdom %hostip %hostdns. |
|
# |
|
sub KillHostHashes { |
|
foreach my $key (keys %hostid) { |
|
delete $hostid{$key}; |
|
} |
|
foreach my $key (keys %hostdom) { |
|
delete $hostdom{$key}; |
|
} |
|
foreach my $key (keys %hostip) { |
|
delete $hostip{$key}; |
|
} |
|
foreach my $key (keys %hostdns) { |
|
delete $hostdns{$key}; |
|
} |
|
} |
|
# |
|
# Read in the host table from file and distribute it into the various hashes: |
|
# |
|
# - %hostid - Indexed by IP, the loncapa hostname. |
|
# - %hostdom - Indexed by loncapa hostname, the domain. |
|
# - %hostip - Indexed by hostid, the Ip address of the host. |
|
sub ReadHostTable { |
|
|
|
open (CONFIG,"$perlvar{'lonTabDir'}/hosts.tab") || die "Can't read host file"; |
|
my $myloncapaname = $perlvar{'lonHostID'}; |
|
Debug("My loncapa name is : $myloncapaname"); |
|
while (my $configline=<CONFIG>) { |
|
if (!($configline =~ /^\s*\#/)) { |
|
my ($id,$domain,$role,$name,$ip)=split(/:/,$configline); |
|
chomp($ip); $ip=~s/\D+$//; |
|
$hostid{$ip}=$id; # LonCAPA name of host by IP. |
|
$hostdom{$id}=$domain; # LonCAPA domain name of host. |
|
$hostip{$id}=$ip; # IP address of host. |
|
$hostdns{$name} = $id; # LonCAPA name of host by DNS. |
|
|
|
if ($id eq $perlvar{'lonHostID'}) { |
|
Debug("Found me in the host table: $name"); |
|
$thisserver=$name; |
|
} |
|
} |
|
} |
|
close(CONFIG); |
|
} |
|
# |
|
# 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. |
|
|
|
|
|
KillHostHashes; |
|
ReadHostTable; |
|
|
|
foreach my $child (keys %children) { |
|
my $childip = $children{$child}; |
|
if(!$hostid{$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 { |
|
&status("Checking on the children (sending signals)"); |
|
&initnewstatus(); |
|
&logstatus(); |
|
&logthis('Going to check on the children'); |
|
my $docdir=$perlvar{'lonDocRoot'}; |
|
foreach (sort keys %children) { |
|
sleep 1; |
|
unless (kill 'USR1' => $_) { |
|
&logthis ('Child '.$_.' is dead'); |
|
&logstatus($$.' is dead'); |
|
} |
|
} |
|
sleep 5; |
|
$SIG{ALRM} = sub { Debug("timeout"); |
|
die "timeout"; }; |
|
$SIG{__DIE__} = 'DEFAULT'; |
|
&status("Checking on the children (waiting for reports)"); |
|
foreach (sort keys %children) { |
|
unless (-e "$docdir/lon-status/londchld/$_.txt") { |
|
eval { |
|
alarm(300); |
|
&logthis('Child '.$_.' did not respond'); |
|
kill 9 => $_; |
|
#$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}"; |
|
#$subj="LON: $currenthostid killed lond process $_"; |
|
#my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`; |
|
#$execdir=$perlvar{'lonDaemons'}; |
|
#$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`; |
|
alarm(0); |
|
} |
|
} |
|
} |
|
$SIG{ALRM} = 'DEFAULT'; |
|
$SIG{__DIE__} = \&catchexception; |
|
&status("Finished checking children"); |
|
} |
|
|
# --------------------------------------------------------------------- Logging |
# --------------------------------------------------------------------- Logging |
|
|
sub logthis { |
sub logthis { |
Line 104 sub logthis {
|
Line 3325 sub logthis {
|
my $fh=IO::File->new(">>$execdir/logs/lond.log"); |
my $fh=IO::File->new(">>$execdir/logs/lond.log"); |
my $now=time; |
my $now=time; |
my $local=localtime($now); |
my $local=localtime($now); |
|
$lastlog=$local.': '.$message; |
print $fh "$local ($$): $message\n"; |
print $fh "$local ($$): $message\n"; |
} |
} |
|
|
|
# ------------------------- Conditional log if $DEBUG true. |
|
sub Debug { |
|
my $message = shift; |
|
if($DEBUG) { |
|
&logthis($message); |
|
} |
|
} |
|
|
|
# |
|
# Sub to do replies to client.. this gives a hook for some |
|
# debug tracing too: |
|
# Parameters: |
|
# fd - File open on client. |
|
# reply - Text to send to client. |
|
# request - Original request from client. |
|
# |
|
sub Reply { |
|
my ($fd, $reply, $request) = @_; |
|
print $fd $reply; |
|
Debug("Request was $request Reply was $reply"); |
|
|
|
$Transactions++; |
|
|
|
|
|
} |
|
|
|
|
|
# |
|
# Sub to report a failure. |
|
# This function: |
|
# - Increments the failure statistic counters. |
|
# - Invokes Reply to send the error message to the client. |
|
# Parameters: |
|
# fd - File descriptor open on the client |
|
# reply - Reply text to emit. |
|
# request - The original request message (used by Reply |
|
# to debug if that's enabled. |
|
# Implicit outputs: |
|
# $Failures- The number of failures is incremented. |
|
# Reply (invoked here) sends a message to the |
|
# client: |
|
# |
|
sub Failure { |
|
my $fd = shift; |
|
my $reply = shift; |
|
my $request = shift; |
|
|
|
$Failures++; |
|
Reply($fd, $reply, $request); # That's simple eh? |
|
} |
|
# ------------------------------------------------------------------ Log status |
|
|
|
sub logstatus { |
|
&status("Doing logging"); |
|
my $docdir=$perlvar{'lonDocRoot'}; |
|
{ |
|
my $fh=IO::File->new(">>$docdir/lon-status/londstatus.txt"); |
|
print $fh $$."\t".$clientname."\t".$currenthostid."\t" |
|
.$status."\t".$lastlog."\t $keymode\n"; |
|
$fh->close(); |
|
} |
|
&status("Finished londstatus.txt"); |
|
{ |
|
my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt"); |
|
print $fh $status."\n".$lastlog."\n".time."\n$keymode"; |
|
$fh->close(); |
|
} |
|
&status("Finished logging"); |
|
} |
|
|
|
sub initnewstatus { |
|
my $docdir=$perlvar{'lonDocRoot'}; |
|
my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt"); |
|
my $now=time; |
|
my $local=localtime($now); |
|
print $fh "LOND status $local - parent $$\n\n"; |
|
opendir(DIR,"$docdir/lon-status/londchld"); |
|
while (my $filename=readdir(DIR)) { |
|
unlink("$docdir/lon-status/londchld/$filename"); |
|
} |
|
closedir(DIR); |
|
} |
|
|
|
# -------------------------------------------------------------- Status setting |
|
|
|
sub status { |
|
my $what=shift; |
|
my $now=time; |
|
my $local=localtime($now); |
|
$status=$local.': '.$what; |
|
$0='lond: '.$what.' '.$local; |
|
} |
|
|
# -------------------------------------------------------- Escape Special Chars |
# -------------------------------------------------------- Escape Special Chars |
|
|
Line 136 sub reconlonc {
|
Line 3450 sub reconlonc {
|
if (kill 0 => $loncpid) { |
if (kill 0 => $loncpid) { |
&logthis("lonc at pid $loncpid responding, sending USR1"); |
&logthis("lonc at pid $loncpid responding, sending USR1"); |
kill USR1 => $loncpid; |
kill USR1 => $loncpid; |
sleep 1; |
|
if (-e "$peerfile") { return; } |
|
&logthis("$peerfile still not there, give it another try"); |
|
sleep 5; |
|
if (-e "$peerfile") { return; } |
|
&logthis( |
|
"<font color=blue>WARNING: $peerfile still not there, giving up</font>"); |
|
} else { |
} else { |
&logthis( |
&logthis( |
"<font color=red>CRITICAL: " |
"<font color='red'>CRITICAL: " |
."lonc at pid $loncpid not responding, giving up</font>"); |
."lonc at pid $loncpid not responding, giving up</font>"); |
} |
} |
} else { |
} else { |
&logthis('<font color=red>CRITICAL: lonc not running, giving up</font>'); |
&logthis('<font color="red">CRITICAL: lonc not running, giving up</font>'); |
} |
} |
} |
} |
|
|
Line 172 sub subreply {
|
Line 3479 sub subreply {
|
sub reply { |
sub reply { |
my ($cmd,$server)=@_; |
my ($cmd,$server)=@_; |
my $answer; |
my $answer; |
if ($server ne $perlvar{'lonHostID'}) { |
if ($server ne $currenthostid) { |
$answer=subreply($cmd,$server); |
$answer=subreply($cmd,$server); |
if ($answer eq 'con_lost') { |
if ($answer eq 'con_lost') { |
$answer=subreply("ping",$server); |
$answer=subreply("ping",$server); |
if ($answer ne $server) { |
if ($answer ne $server) { |
|
&logthis("sub reply: answer != server answer is $answer, server is $server"); |
&reconlonc("$perlvar{'lonSockDir'}/$server"); |
&reconlonc("$perlvar{'lonSockDir'}/$server"); |
} |
} |
$answer=subreply($cmd,$server); |
$answer=subreply($cmd,$server); |
Line 217 sub propath {
|
Line 3525 sub propath {
|
my ($udom,$uname)=@_; |
my ($udom,$uname)=@_; |
$udom=~s/\W//g; |
$udom=~s/\W//g; |
$uname=~s/\W//g; |
$uname=~s/\W//g; |
my $subdir=$uname; |
my $subdir=$uname.'__'; |
$subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/; |
$subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/; |
my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname"; |
my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname"; |
return $proname; |
return $proname; |
Line 240 sub ishome {
|
Line 3548 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 248 POSIX::setsid() or die "Can't start new
|
Line 3556 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'); |
|
|
|
|
# ------------------------------------------------------- Now we are on our own |
|
|
|
# Fork off our children. |
|
for (1 .. $PREFORK) { |
|
make_new_child(); |
|
} |
|
|
|
# ----------------------------------------------------- Install signal handlers |
# ----------------------------------------------------- Install signal handlers |
|
|
|
|
$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; |
|
$SIG{USR2} = \&UpdateHosts; |
|
|
|
# Read the host hashes: |
|
|
|
ReadHostTable; |
|
|
|
# -------------------------------------------------------------- |
|
# Accept connections. When a connection comes in, it is validated |
|
# and if good, a child process is created to process transactions |
|
# along the connection. |
|
|
# And maintain the population. |
|
while (1) { |
while (1) { |
sleep; # wait for a signal (i.e., child's death) |
&status('Starting accept'); |
for ($i = $children; $i < $PREFORK; $i++) { |
$client = $server->accept() or next; |
make_new_child(); # top up the child pool |
&status('Accepted '.$client.' off to spawn'); |
} |
make_new_child($client); |
|
&status('Finished spawning'); |
} |
} |
|
|
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"); |
|
$clientdns = gethostbyaddr($iaddr, AF_INET); |
|
Debug("Connected with $clientdns by name"); |
|
} 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); |
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{ALRM}= \&timeout; |
|
$lastlog='Forked '; |
|
$status='Forked'; |
|
|
# unblock signals |
# unblock signals |
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++) { |
&Authen::Krb5::init_ets(); |
$client = $server->accept() or last; |
|
|
|
|
&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); |
ReadManagerTable; # May also be a manager!! |
my $clientip=inet_ntoa($iaddr); |
|
my $clientrec=($hostid{$clientip} ne undef); |
my $clientrec=($hostid{$clientip} ne undef); |
&logthis( |
my $ismanager=($managers{$clientip} ne undef); |
"<font color=yellow>INFO: Connect from $clientip ($hostid{$clientip})</font>"); |
$clientname = "[unknonwn]"; |
my $clientok; |
if($clientrec) { # Establish client type. |
if ($clientrec) { |
$ConnectionType = "client"; |
my $remotereq=<$client>; |
$clientname = $hostid{$clientip}; |
$remotereq=~s/\W//g; |
if($ismanager) { |
if ($remotereq eq 'init') { |
$ConnectionType = "both"; |
my $challenge="$$".time; |
} |
print $client "$challenge\n"; |
} else { |
$remotereq=<$client>; |
$ConnectionType = "manager"; |
$remotereq=~s/\W//g; |
$clientname = $managers{$clientip}; |
if ($challenge eq $remotereq) { |
} |
$clientok=1; |
my $clientok; |
print $client "ok\n"; |
|
} else { |
if ($clientrec || $ismanager) { |
&logthis( |
&status("Waiting for init from $clientip $clientname"); |
"<font color=blue>WARNING: $clientip did not reply challenge</font>"); |
&logthis('<font color="yellow">INFO: Connection, '. |
} |
$clientip. |
} else { |
" ($clientname) connection type = $ConnectionType </font>" ); |
&logthis( |
&status("Connecting $clientip ($clientname))"); |
"<font color=blue>WARNING: " |
my $remotereq=<$client>; |
."$clientip failed to initialize: >$remotereq< </font>"); |
chomp($remotereq); |
} |
Debug("Got init: $remotereq"); |
|
my $inikeyword = split(/:/, $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; |
|
|
|
} |
|
} |
} else { |
} else { |
&logthis( |
&logthis( |
"<font color=blue>WARNING: Unknown client $clientip</font>"); |
"<font color='blue'>WARNING: " |
} |
."$clientip failed to initialize: >$remotereq< </font>"); |
if ($clientok) { |
&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 |
# ---------------- New known client connecting, could mean machine online again |
&reconlonc("$perlvar{'lonSockDir'}/$hostid{$clientip}"); |
|
&logthis( |
foreach my $id (keys(%hostip)) { |
"<font color=green>Established connection: $hostid{$clientip}</font>"); |
if ($hostip{$id} ne $clientip || |
|
$hostip{$currenthostid} eq $clientip) { |
|
# no need to try to do recon's to myself |
|
next; |
|
} |
|
&reconlonc("$perlvar{'lonSockDir'}/$id"); |
|
} |
|
&logthis("<font color='green'>Established connection: $clientname</font>"); |
|
&status('Will listen to '.$clientname); |
# ------------------------------------------------------------ Process requests |
# ------------------------------------------------------------ Process requests |
while (my $userinput=<$client>) { |
my $keep_going = 1; |
chomp($userinput); |
my $user_input; |
my $wasenc=0; |
while(($user_input = get_request) && $keep_going) { |
# ------------------------------------------------------------ See if encrypted |
alarm(120); |
if ($userinput =~ /^enc/) { |
Debug("Main: Got $user_input\n"); |
if ($cipher) { |
$keep_going = &process_request($user_input); |
my ($cmd,$cmdlength,$encinput)=split(/:/,$userinput); |
alarm(0); |
$userinput=''; |
&status('Listening to '.$clientname." ($keymode)"); |
for (my $encidx=0;$encidx<length($encinput);$encidx+=16) { |
} |
$userinput.= |
|
$cipher->decrypt( |
# --------------------------------------------- client unknown or fishy, refuse |
pack("H16",substr($encinput,$encidx,16)) |
} else { |
); |
print $client "refused\n"; |
} |
$client->close(); |
$userinput=substr($userinput,0,$cmdlength); |
&logthis("<font color='blue'>WARNING: " |
$wasenc=1; |
."Rejected client $clientip, closing connection</font>"); |
} |
} |
} |
} |
# ------------------------------------------------------------- Normal commands |
|
# ------------------------------------------------------------------------ ping |
|
if ($userinput =~ /^ping/) { |
|
print $client "$perlvar{'lonHostID'}\n"; |
|
# ------------------------------------------------------------------------ pong |
|
} elsif ($userinput =~ /^pong/) { |
|
$reply=reply("ping",$hostid{$clientip}); |
|
print $client "$perlvar{'lonHostID'}:$reply\n"; |
|
# ------------------------------------------------------------------------ ekey |
|
} elsif ($userinput =~ /^ekey/) { |
|
my $buildkey=time.$$.int(rand 100000); |
|
$buildkey=~tr/1-6/A-F/; |
|
$buildkey=int(rand 100000).$buildkey.int(rand 100000); |
|
my $key=$perlvar{'lonHostID'}.$hostid{$clientip}; |
|
$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; |
|
print $client "$buildkey\n"; |
|
# ------------------------------------------------------------------------ load |
|
} elsif ($userinput =~ /^load/) { |
|
my $loadavg; |
|
{ |
|
my $loadfile=IO::File->new('/proc/loadavg'); |
|
$loadavg=<$loadfile>; |
|
} |
|
$loadavg =~ s/\s.*//g; |
|
my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'}; |
|
print $client "$loadpercent\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]; |
|
$pwdcorrect= |
|
(crypt($upass,$contentpwd) eq $contentpwd); |
|
} elsif ($howpwd eq 'krb4') { |
|
$pwdcorrect=( |
|
Authen::Krb4::get_pw_in_tkt($uname,"", |
|
$contentpwd,'krbtgt',$contentpwd,1, |
|
$upass) == 0); |
|
} |
|
if ($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); |
|
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";; } |
|
print $client "ok\n"; |
|
} else { |
|
print $client "non_authorized\n"; |
|
} |
|
} else { |
|
print $client "auth_mode_error\n"; |
|
} |
|
} else { |
|
print $client "unknown_user\n"; |
|
} |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
# ------------------------------------------------------------------------ home |
|
} elsif ($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 ($response->is_error()) { |
|
unline($transname); |
|
my $message=$response->status_line; |
|
&logthis( |
|
"LWP GET: $message for $fname ($remoteurl)"); |
|
} else { |
|
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) { |
|
$now=time; |
|
{ |
|
my $sh=IO::File->new(">$fname.$hostid{$clientip}"); |
|
print $sh "$clientip:$now\n"; |
|
} |
|
$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; |
|
{ |
|
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/$namespace.db",&GDBM_WRCREAT,0640)) { |
|
for ($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/$namespace.db",&GDBM_WRCREAT,0640)) { |
|
for ($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; |
|
{ |
|
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_WRCREAT,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,$namespace) |
|
=split(/:/,$userinput); |
|
$namespace=~s/\//\_/g; |
|
$namespace=~s/\W//g; |
|
my $proname=propath($udom,$uname); |
|
my $qresult=''; |
|
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT,0640)) { |
|
foreach $key (keys %hash) { |
|
$qresult.="$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; |
|
{ |
|
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; |
|
} |
|
$allkeys=~s/:$//; |
|
$hash{"$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_WRCREAT,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) { |
|
$qresult.="$version:$key=".$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,$query)=split(/:/,$userinput); |
|
$query=~s/\n*$//g; |
|
print $client sqlreply("$hostid{$clientip}\&$query")."\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")) { |
|
print $store $reply; |
|
close $store; |
|
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_WRCREAT,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 $ulsdir) { |
|
while ($ulsfn=<$ulsdir/*>) { |
|
my @ulsstats=stat($ulsfn); |
|
$ulsout.=$ulsfn.'&'.join('&',@ulsstats).':'; |
|
} |
|
} else { |
|
$ulsout='no_such_dir'; |
|
} |
|
print $client "$ulsout\n"; |
|
# ------------------------------------------------------------- unknown command |
|
} else { |
|
# unknown command |
|
print $client "unknown_cmd\n"; |
|
} |
|
# ------------------------------------------------------ client unknown, refuse |
|
} |
|
} else { |
|
print $client "refused\n"; |
|
&logthis("<font color=blue>WARNING: " |
|
."Rejected client $clientip, closing connection</font>"); |
|
} |
|
&logthis("<font color=red>CRITICAL: " |
|
."Disconnect from $clientip ($hostid{$clientip})</font>"); |
|
# ============================================================================= |
# ============================================================================= |
} |
|
|
|
# tidy up gracefully and finish |
&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; |
|
|
# this exit is VERY important, otherwise the child will become |
} |
# a producer of more and more children, forking yourself into |
|
# process death. |
|
exit; |
# |
|
# 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 ManagePermissions |
|
{ |
|
|
|
my ($request, $domain, $user, $authtype) = @_; |
|
|
|
# See if the request is of the form /$domain/_au |
|
if($request =~ /^(\/$domain\/_au)$/) { # It's an author rolesput... |
|
my $execdir = $perlvar{'lonDaemons'}; |
|
my $userhome= "/home/$user" ; |
|
&logthis("system $execdir/lchtmldir $userhome $user $authtype"); |
|
system("$execdir/lchtmldir $userhome $user $authtype"); |
|
} |
|
} |
|
# |
|
# GetAuthType - Determines the authorization type of a user in a domain. |
|
|
|
# Returns the authorization type or nouser if there is no such user. |
|
# |
|
sub GetAuthType |
|
{ |
|
|
|
my ($domain, $user) = @_; |
|
|
|
Debug("GetAuthType( $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"); |
|
my $availinfo = ''; |
|
if($authtype eq 'krb4' or $authtype eq 'krb5') { |
|
$availinfo = $contentpwd; |
|
} |
|
|
|
return "$authtype:$availinfo"; |
|
} |
|
else { |
|
Debug("Returning nouser"); |
|
return "nouser"; |
|
} |
|
} |
|
|
|
sub addline { |
|
my ($fname,$hostid,$ip,$newline)=@_; |
|
my $contents; |
|
my $found=0; |
|
my $expr='^'.$hostid.':'.$ip.':'; |
|
$expr =~ s/\./\\\./g; |
|
my $sh; |
|
if ($sh=IO::File->new("$fname.subscription")) { |
|
while (my $subline=<$sh>) { |
|
if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;} |
|
} |
|
$sh->close(); |
|
} |
|
$sh=IO::File->new(">$fname.subscription"); |
|
if ($contents) { print $sh $contents; } |
|
if ($newline) { print $sh $newline; } |
|
$sh->close(); |
|
return $found; |
|
} |
|
|
|
sub getchat { |
|
my ($cdom,$cname,$udom,$uname)=@_; |
|
my %hash; |
|
my $proname=&propath($cdom,$cname); |
|
my @entries=(); |
|
if (tie(%hash,'GDBM_File',"$proname/nohist_chatroom.db", |
|
&GDBM_READER(),0640)) { |
|
@entries=map { $_.':'.$hash{$_} } sort keys %hash; |
|
untie %hash; |
|
} |
|
my @participants=(); |
|
my $cutoff=time-60; |
|
if (tie(%hash,'GDBM_File',"$proname/nohist_inchatroom.db", |
|
&GDBM_WRCREAT(),0640)) { |
|
$hash{$uname.':'.$udom}=time; |
|
foreach (sort keys %hash) { |
|
if ($hash{$_}>$cutoff) { |
|
$participants[$#participants+1]='active_participant:'.$_; |
|
} |
|
} |
|
untie %hash; |
|
} |
|
return (@participants,@entries); |
|
} |
|
|
|
sub chatadd { |
|
my ($cdom,$cname,$newchat)=@_; |
|
my %hash; |
|
my $proname=&propath($cdom,$cname); |
|
my @entries=(); |
|
my $time=time; |
|
if (tie(%hash,'GDBM_File',"$proname/nohist_chatroom.db", |
|
&GDBM_WRCREAT(),0640)) { |
|
@entries=map { $_.':'.$hash{$_} } sort keys %hash; |
|
my ($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; |
|
} |
|
$hash{$newid}=$newchat; |
|
my $expired=$time-3600; |
|
foreach (keys %hash) { |
|
my ($thistime)=($_=~/(\d+)\_/); |
|
if ($thistime<$expired) { |
|
delete $hash{$_}; |
|
} |
|
} |
|
untie %hash; |
|
} |
|
{ |
|
my $hfh; |
|
if ($hfh=IO::File->new(">>$proname/chatroom.log")) { |
|
print $hfh "$time:".&unescape($newchat)."\n"; |
|
} |
|
} |
|
} |
|
|
|
sub unsub { |
|
my ($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); |
|
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/; |
|
$fname="http://$thisserver/".$fname; |
|
$result="$fname\n"; |
|
} |
|
} else { |
|
$result="not_found\n"; |
|
} |
|
} else { |
|
$result="rejected\n"; |
} |
} |
|
return $result; |
} |
} |
|
|
|
sub make_passwd_file { |
|
my ($uname, $umode,$npass,$passfilename)=@_; |
|
my $result="ok\n"; |
|
if ($umode eq 'krb4' or $umode eq 'krb5') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "$umode:$npass\n"; |
|
} |
|
} elsif ($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"); |
|
print $pf "internal:$ncpass\n"; |
|
} |
|
} elsif ($umode eq 'localauth') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "localauth:$npass\n"; |
|
} |
|
} 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"; |
|
{ |
|
&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"; |
|
} |
|
my $useraddok = $?; |
|
if($useraddok > 0) { |
|
&logthis("Failed lcuseradd: ".&lcuseraddstrerror($useraddok)); |
|
} |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "unix:\n"; |
|
} |
|
} elsif ($umode eq 'none') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "none:\n"; |
|
} |
|
} else { |
|
$result="auth_mode_error\n"; |
|
} |
|
return $result; |
|
} |
|
|
|
sub sethost { |
|
my ($remotereq) = @_; |
|
my (undef,$hostid)=split(/:/,$remotereq); |
|
if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; } |
|
if ($hostip{$perlvar{'lonHostID'}} eq $hostip{$hostid}) { |
|
$currenthostid =$hostid; |
|
$currentdomainid=$hostdom{$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"; |
|
} |
|
|
|
#There is a copy of this in lonnet.pm |
|
sub userload { |
|
my $numusers=0; |
|
{ |
|
opendir(LONIDS,$perlvar{'lonIDsDir'}); |
|
my $filename; |
|
my $curtime=time; |
|
while ($filename=readdir(LONIDS)) { |
|
if ($filename eq '.' || $filename eq '..') {next;} |
|
my ($mtime)=(stat($perlvar{'lonIDsDir'}.'/'.$filename))[9]; |
|
if ($curtime-$mtime < 1800) { $numusers++; } |
|
} |
|
closedir(LONIDS); |
|
} |
|
my $userloadpercent=0; |
|
my $maxuserload=$perlvar{'lonUserLoadLim'}; |
|
if ($maxuserload) { |
|
$userloadpercent=100*$numusers/$maxuserload; |
|
} |
|
$userloadpercent=sprintf("%.2f",$userloadpercent); |
|
return $userloadpercent; |
|
} |
|
|
|
# Routines for serializing arrays and hashes (copies from lonnet) |
|
|
|
sub array2str { |
|
my (@array) = @_; |
|
my $result=&arrayref2str(\@array); |
|
$result=~s/^__ARRAY_REF__//; |
|
$result=~s/__END_ARRAY_REF__$//; |
|
return $result; |
|
} |
|
|
|
sub arrayref2str { |
|
my ($arrayref) = @_; |
|
my $result='__ARRAY_REF__'; |
|
foreach my $elem (@$arrayref) { |
|
if(ref($elem) eq 'ARRAY') { |
|
$result.=&arrayref2str($elem).'&'; |
|
} elsif(ref($elem) eq 'HASH') { |
|
$result.=&hashref2str($elem).'&'; |
|
} elsif(ref($elem)) { |
|
#print("Got a ref of ".(ref($elem))." skipping."); |
|
} else { |
|
$result.=&escape($elem).'&'; |
|
} |
|
} |
|
$result=~s/\&$//; |
|
$result .= '__END_ARRAY_REF__'; |
|
return $result; |
|
} |
|
|
|
sub hash2str { |
|
my (%hash) = @_; |
|
my $result=&hashref2str(\%hash); |
|
$result=~s/^__HASH_REF__//; |
|
$result=~s/__END_HASH_REF__$//; |
|
return $result; |
|
} |
|
|
|
sub hashref2str { |
|
my ($hashref)=@_; |
|
my $result='__HASH_REF__'; |
|
foreach (sort(keys(%$hashref))) { |
|
if (ref($_) eq 'ARRAY') { |
|
$result.=&arrayref2str($_).'='; |
|
} elsif (ref($_) eq 'HASH') { |
|
$result.=&hashref2str($_).'='; |
|
} elsif (ref($_)) { |
|
$result.='='; |
|
#print("Got a ref of ".(ref($_))." skipping."); |
|
} else { |
|
if ($_) {$result.=&escape($_).'=';} else { last; } |
|
} |
|
|
|
if(ref($hashref->{$_}) eq 'ARRAY') { |
|
$result.=&arrayref2str($hashref->{$_}).'&'; |
|
} elsif(ref($hashref->{$_}) eq 'HASH') { |
|
$result.=&hashref2str($hashref->{$_}).'&'; |
|
} elsif(ref($hashref->{$_})) { |
|
$result.='&'; |
|
#print("Got a ref of ".(ref($hashref->{$_}))." skipping."); |
|
} else { |
|
$result.=&escape($hashref->{$_}).'&'; |
|
} |
|
} |
|
$result=~s/\&$//; |
|
$result .= '__END_HASH_REF__'; |
|
return $result; |
|
} |
|
|
|
# ----------------------------------- POD (plain old documentation, CPAN style) |
|
|
|
=head1 NAME |
|
|
|
lond - "LON Daemon" Server (port "LOND" 5663) |
|
|
|
=head1 SYNOPSIS |
|
|
|
Usage: B<lond> |
|
|
|
Should only be run as user=www. This is a command-line script which |
|
is invoked by B<loncron>. There is no expectation that a typical user |
|
will manually start B<lond> from the command-line. (In other words, |
|
DO NOT START B<lond> YOURSELF.) |
|
|
|
=head1 DESCRIPTION |
|
|
|
There are two characteristics associated with the running of B<lond>, |
|
PROCESS MANAGEMENT (starting, stopping, handling child processes) |
|
and SERVER-SIDE ACTIVITIES (password authentication, user creation, |
|
subscriptions, etc). These are described in two large |
|
sections below. |
|
|
|
B<PROCESS MANAGEMENT> |
|
|
|
Preforker - server who forks first. Runs as a daemon. HUPs. |
|
Uses IDEA encryption |
|
|
|
B<lond> forks off children processes that correspond to the other servers |
|
in the network. Management of these processes can be done at the |
|
parent process level or the child process level. |
|
|
|
B<logs/lond.log> is the location of log messages. |
|
|
|
The process management is now explained in terms of linux shell commands, |
|
subroutines internal to this code, and signal assignments: |
|
|
|
=over 4 |
|
|
|
=item * |
|
|
|
PID is stored in B<logs/lond.pid> |
|
|
|
This is the process id number of the parent B<lond> process. |
|
|
|
=item * |
|
|
|
SIGTERM and SIGINT |
|
|
|
Parent signal assignment: |
|
$SIG{INT} = $SIG{TERM} = \&HUNTSMAN; |
|
|
|
Child signal assignment: |
|
$SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also) |
|
(The child dies and a SIGALRM is sent to parent, awaking parent from slumber |
|
to restart a new child.) |
|
|
|
Command-line invocations: |
|
B<kill> B<-s> SIGTERM I<PID> |
|
B<kill> B<-s> SIGINT I<PID> |
|
|
|
Subroutine B<HUNTSMAN>: |
|
This is only invoked for the B<lond> parent I<PID>. |
|
This kills all the children, and then the parent. |
|
The B<lonc.pid> file is cleared. |
|
|
|
=item * |
|
|
|
SIGHUP |
|
|
|
Current bug: |
|
This signal can only be processed the first time |
|
on the parent process. Subsequent SIGHUP signals |
|
have no effect. |
|
|
|
Parent signal assignment: |
|
$SIG{HUP} = \&HUPSMAN; |
|
|
|
Child signal assignment: |
|
none (nothing happens) |
|
|
|
Command-line invocations: |
|
B<kill> B<-s> SIGHUP I<PID> |
|
|
|
Subroutine B<HUPSMAN>: |
|
This is only invoked for the B<lond> parent I<PID>, |
|
This kills all the children, and then the parent. |
|
The B<lond.pid> file is cleared. |
|
|
|
=item * |
|
|
|
SIGUSR1 |
|
|
|
Parent signal assignment: |
|
$SIG{USR1} = \&USRMAN; |
|
|
|
Child signal assignment: |
|
$SIG{USR1}= \&logstatus; |
|
|
|
Command-line invocations: |
|
B<kill> B<-s> SIGUSR1 I<PID> |
|
|
|
Subroutine B<USRMAN>: |
|
When invoked for the B<lond> parent I<PID>, |
|
SIGUSR1 is sent to all the children, and the status of |
|
each connection is logged. |
|
|
|
=item * |
|
|
|
SIGUSR2 |
|
|
|
Parent Signal assignment: |
|
$SIG{USR2} = \&UpdateHosts |
|
|
|
Child signal assignment: |
|
NONE |
|
|
|
|
|
=item * |
|
|
|
SIGCHLD |
|
|
|
Parent signal assignment: |
|
$SIG{CHLD} = \&REAPER; |
|
|
|
Child signal assignment: |
|
none |
|
|
|
Command-line invocations: |
|
B<kill> B<-s> SIGCHLD I<PID> |
|
|
|
Subroutine B<REAPER>: |
|
This is only invoked for the B<lond> parent I<PID>. |
|
Information pertaining to the child is removed. |
|
The socket port is cleaned up. |
|
|
|
=back |
|
|
|
B<SERVER-SIDE ACTIVITIES> |
|
|
|
Server-side information can be accepted in an encrypted or non-encrypted |
|
method. |
|
|
|
=over 4 |
|
|
|
=item ping |
|
|
|
Query a client in the hosts.tab table; "Are you there?" |
|
|
|
=item pong |
|
|
|
Respond to a ping query. |
|
|
|
=item ekey |
|
|
|
Read in encrypted key, make cipher. Respond with a buildkey. |
|
|
|
=item load |
|
|
|
Respond with CPU load based on a computation upon /proc/loadavg. |
|
|
|
=item currentauth |
|
|
|
Reply with current authentication information (only over an |
|
encrypted channel). |
|
|
|
=item auth |
|
|
|
Only over an encrypted channel, reply as to whether a user's |
|
authentication information can be validated. |
|
|
|
=item passwd |
|
|
|
Allow for a password to be set. |
|
|
|
=item makeuser |
|
|
|
Make a user. |
|
|
|
=item passwd |
|
|
|
Allow for authentication mechanism and password to be changed. |
|
|
|
=item home |
|
|
|
Respond to a question "are you the home for a given user?" |
|
|
|
=item update |
|
|
|
Update contents of a subscribed resource. |
|
|
|
=item unsubscribe |
|
|
|
The server is unsubscribing from a resource. |
|
|
|
=item subscribe |
|
|
|
The server is subscribing to a resource. |
|
|
|
=item log |
|
|
|
Place in B<logs/lond.log> |
|
|
|
=item put |
|
|
|
stores hash in namespace |
|
|
|
=item rolesput |
|
|
|
put a role into a user's environment |
|
|
|
=item get |
|
|
|
returns hash with keys from array |
|
reference filled in from namespace |
|
|
|
=item eget |
|
|
|
returns hash with keys from array |
|
reference filled in from namesp (encrypts the return communication) |
|
|
|
=item rolesget |
|
|
|
get a role from a user's environment |
|
|
|
=item del |
|
|
|
deletes keys out of array from namespace |
|
|
|
=item keys |
|
|
|
returns namespace keys |
|
|
|
=item dump |
|
|
|
dumps the complete (or key matching regexp) namespace into a hash |
|
|
|
=item store |
|
|
|
stores hash permanently |
|
for this url; hashref needs to be given and should be a \%hashname; the |
|
remaining args aren't required and if they aren't passed or are '' they will |
|
be derived from the ENV |
|
|
|
=item restore |
|
|
|
returns a hash for a given url |
|
|
|
=item querysend |
|
|
|
Tells client about the lonsql process that has been launched in response |
|
to a sent query. |
|
|
|
=item queryreply |
|
|
|
Accept information from lonsql and make appropriate storage in temporary |
|
file space. |
|
|
|
=item idput |
|
|
|
Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers |
|
for each student, defined perhaps by the institutional Registrar.) |
|
|
|
=item idget |
|
|
|
Returns usernames corresponding to IDs. (These "IDs" are unique identifiers |
|
for each student, defined perhaps by the institutional Registrar.) |
|
|
|
=item tmpput |
|
|
|
Accept and store information in temporary space. |
|
|
|
=item tmpget |
|
|
|
Send along temporarily stored information. |
|
|
|
=item ls |
|
|
|
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) |
|
|
|
What to do when a client tells the server that they (the client) |
|
are leaving the network. |
|
|
|
=item unknown command |
|
|
|
If B<lond> is sent an unknown command (not in the list above), |
|
it replys to the client "unknown_cmd". |
|
|
|
|
|
=item UNKNOWN CLIENT |
|
|
|
If the anti-spoofing algorithm cannot verify the client, |
|
the client is rejected (with a "refused" message sent |
|
to the client, and the connection is closed. |
|
|
|
=back |
|
|
|
=head1 PREREQUISITES |
|
|
|
IO::Socket |
|
IO::File |
|
Apache::File |
|
Symbol |
|
POSIX |
|
Crypt::IDEA |
|
LWP::UserAgent() |
|
GDBM_File |
|
Authen::Krb4 |
|
Authen::Krb5 |
|
|
|
=head1 COREQUISITES |
|
|
|
=head1 OSNAMES |
|
|
|
linux |
|
|
|
=head1 SCRIPT CATEGORIES |
|
|
|
Server/Process |
|
|
|
=cut |