version 1.27, 2000/12/05 19:45:36
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version 1.83, 2002/07/17 19:06:30
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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) |
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# |
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# $Id$ |
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# |
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# Copyright Michigan State University Board of Trustees |
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# |
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# This file is part of the LearningOnline Network with CAPA (LON-CAPA). |
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# |
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# LON-CAPA is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# 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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# |
# 5/26/99,6/4,6/10,6/11,6/14,6/15,6/26,6/28,6/30, |
# 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, |
# 7/8,7/9,7/10,7/12,7/17,7/19,9/21, |
# 10/7,10/8,10/9,10/11,10/13,10/15,11/4,11/16, |
# 10/7,10/8,10/9,10/11,10/13,10/15,11/4,11/16, |
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# 06/26 Scott Harrison |
# 06/26 Scott Harrison |
# 06/29,06/30,07/14,07/15,07/17,07/20,07/25,09/18 Gerd Kortemeyer |
# 06/29,06/30,07/14,07/15,07/17,07/20,07/25,09/18 Gerd Kortemeyer |
# 12/05 Scott Harrison |
# 12/05 Scott Harrison |
# 12/05 Gerd Kortemeyer |
# 12/05,12/13,12/29 Gerd Kortemeyer |
# |
# YEAR=2001 |
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# Jan 01 Scott Harrison |
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# 02/12 Gerd Kortemeyer |
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# 03/15 Scott Harrison |
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# 03/24 Gerd Kortemeyer |
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# 04/02 Scott Harrison |
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# 05/11,05/28,08/30 Gerd Kortemeyer |
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# 9/30,10/22,11/13,11/15,11/16 Scott Harrison |
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# 11/26,11/27 Gerd Kortemeyer |
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# 12/20 Scott Harrison |
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# 12/22 Gerd Kortemeyer |
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# YEAR=2002 |
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# 01/20/02,02/05 Gerd Kortemeyer |
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# 02/05 Guy Albertelli |
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# 02/07 Scott Harrison |
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# 02/12 Gerd Kortemeyer |
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# 02/19 Matthew Hall |
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# 02/25 Gerd Kortemeyer |
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# 05/11 Scott Harrison |
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### |
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# based on "Perl Cookbook" ISBN 1-56592-243-3 |
# based on "Perl Cookbook" ISBN 1-56592-243-3 |
# preforker - server who forks first |
# preforker - server who forks first |
# runs as a daemon |
# runs as a daemon |
# HUPs |
# HUPs |
# uses IDEA encryption |
# uses IDEA encryption |
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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; |
Line 26 use Crypt::IDEA;
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Line 74 use Crypt::IDEA;
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use LWP::UserAgent(); |
use LWP::UserAgent(); |
use GDBM_File; |
use GDBM_File; |
use Authen::Krb4; |
use Authen::Krb4; |
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use lib '/home/httpd/lib/perl/'; |
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use localauth; |
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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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# grabs exception and records it to log before exiting |
# grabs exception and records it to log before exiting |
sub catchexception { |
sub catchexception { |
Line 35 sub catchexception {
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Line 90 sub catchexception {
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&logthis("<font color=red>CRITICAL: " |
&logthis("<font color=red>CRITICAL: " |
."ABNORMAL EXIT. Child $$ for server $wasserver died through " |
."ABNORMAL EXIT. Child $$ for server $wasserver died through " |
."a crash with this error msg->[$error]</font>"); |
."a crash with this error msg->[$error]</font>"); |
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&logthis('Famous last words: '.$status.' - '.$lastlog); |
if ($client) { print $client "error: $error\n"; } |
if ($client) { print $client "error: $error\n"; } |
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$server->close(); |
die($error); |
die($error); |
} |
} |
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# grabs exception and records it to log before exiting |
sub timeout { |
# NOTE: we must NOT use the regular (non-overrided) die function in |
&logthis("<font color=ref>CRITICAL: TIME OUT ".$$."</font>"); |
# the code because a handler CANNOT be attached to it |
&catchexception('Timeout'); |
# (despite what some of the documentation says about SIG{__DIE__}. |
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sub catchdie { |
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my ($message)=@_; |
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$SIG{'QUIT'}='DEFAULT'; |
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$SIG{__DIE__}='DEFAULT'; |
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&logthis("<font color=red>CRITICAL: " |
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."ABNORMAL EXIT. Child $$ for server $wasserver died through " |
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."\_\_DIE\_\_ with this error msg->[$message]</font>"); |
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if ($client) { print $client "error: $message\n"; } |
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die($message); |
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} |
} |
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# -------------------------------- Set signal handlers to record abnormal exits |
# -------------------------------- Set signal handlers to record abnormal exits |
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$SIG{'QUIT'}=\&catchexception; |
$SIG{'QUIT'}=\&catchexception; |
$SIG{__DIE__}=\&catchexception; |
$SIG{__DIE__}=\&catchexception; |
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# ------------------------------------ Read httpd access.conf and get variables |
# ---------------------------------- Read loncapa_apache.conf and loncapa.conf |
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&status("Read loncapa_apache.conf and loncapa.conf"); |
open (CONFIG,"/etc/httpd/conf/access.conf") |
my $perlvarref=LONCAPA::Configuration::read_conf('loncapa_apache.conf', |
|| catchdie "Can't read access.conf"; |
'loncapa.conf'); |
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my %perlvar=%{$perlvarref}; |
while ($configline=<CONFIG>) { |
undef $perlvarref; |
if ($configline =~ /PerlSetVar/) { |
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my ($dummy,$varname,$varvalue)=split(/\s+/,$configline); |
# ----------------------------- Make sure this process is running from user=www |
chomp($varvalue); |
my $wwwid=getpwnam('www'); |
$perlvar{$varname}=$varvalue; |
if ($wwwid!=$<) { |
} |
$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}"; |
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$subj="LON: $perlvar{'lonHostID'} User ID mismatch"; |
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system("echo 'User ID mismatch. lond must be run as user www.' |\ |
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mailto $emailto -s '$subj' > /dev/null"); |
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exit 1; |
} |
} |
close(CONFIG); |
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# --------------------------------------------- Check if other instance running |
# --------------------------------------------- Check if other instance running |
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Line 82 if (-e $pidfile) {
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Line 130 if (-e $pidfile) {
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my $lfh=IO::File->new("$pidfile"); |
my $lfh=IO::File->new("$pidfile"); |
my $pide=<$lfh>; |
my $pide=<$lfh>; |
chomp($pide); |
chomp($pide); |
if (kill 0 => $pide) { catchdie "already running"; } |
if (kill 0 => $pide) { die "already running"; } |
} |
} |
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$PREFORK=4; # number of children to maintain, at least four spare |
$PREFORK=4; # number of children to maintain, at least four spare |
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# ------------------------------------------------------------- Read hosts file |
# ------------------------------------------------------------- Read hosts file |
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open (CONFIG,"$perlvar{'lonTabDir'}/hosts.tab") |
open (CONFIG,"$perlvar{'lonTabDir'}/hosts.tab") || die "Can't read host file"; |
|| catchdie "Can't read host file"; |
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while ($configline=<CONFIG>) { |
while ($configline=<CONFIG>) { |
my ($id,$domain,$role,$name,$ip)=split(/:/,$configline); |
my ($id,$domain,$role,$name,$ip)=split(/:/,$configline); |
chomp($ip); |
chomp($ip); $ip=~s/\D+$//; |
$hostid{$ip}=$id; |
$hostid{$ip}=$id; |
if ($id eq $perlvar{'lonHostID'}) { $thisserver=$name; } |
if ($id eq $perlvar{'lonHostID'}) { $thisserver=$name; } |
$PREFORK++; |
$PREFORK++; |
Line 107 $server = IO::Socket::INET->new(LocalPor
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Line 154 $server = IO::Socket::INET->new(LocalPor
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Proto => 'tcp', |
Proto => 'tcp', |
Reuse => 1, |
Reuse => 1, |
Listen => 10 ) |
Listen => 10 ) |
or catchdie "making socket: $@\n"; |
or die "making socket: $@\n"; |
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# --------------------------------------------------------- Do global variables |
# --------------------------------------------------------- Do global variables |
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# global variables |
# global variables |
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$MAX_CLIENTS_PER_CHILD = 5; # number of clients each child should |
$MAX_CLIENTS_PER_CHILD = 50; # number of clients each child should |
# process |
# process |
%children = (); # keys are current child process IDs |
%children = (); # keys are current child process IDs |
$children = 0; # current number of children |
$children = 0; # current number of children |
Line 121 $children = 0; # cu
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Line 168 $children = 0; # cu
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sub REAPER { # takes care of dead children |
sub REAPER { # takes care of dead children |
$SIG{CHLD} = \&REAPER; |
$SIG{CHLD} = \&REAPER; |
my $pid = wait; |
my $pid = wait; |
$children --; |
if (defined($children{$pid})) { |
&logthis("Child $pid died"); |
&logthis("Child $pid died"); |
delete $children{$pid}; |
$children --; |
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delete $children{$pid}; |
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} else { |
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&logthis("Unknown Child $pid died"); |
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} |
} |
} |
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sub HUNTSMAN { # signal handler for SIGINT |
sub HUNTSMAN { # signal handler for SIGINT |
local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children |
local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children |
kill 'INT' => keys %children; |
kill 'INT' => keys %children; |
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&logthis("Free socket: ".shutdown($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>"); |
Line 138 sub HUNTSMAN { # si
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Line 190 sub HUNTSMAN { # si
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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 |
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>"); |
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unlink("$execdir/logs/lond.pid"); |
my $execdir=$perlvar{'lonDaemons'}; |
my $execdir=$perlvar{'lonDaemons'}; |
exec("$execdir/lond"); # here we go again |
exec("$execdir/lond"); # here we go again |
} |
} |
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sub checkchildren { |
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&initnewstatus(); |
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&logstatus(); |
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&logthis('Going to check on the children'); |
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$docdir=$perlvar{'lonDocRoot'}; |
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foreach (sort keys %children) { |
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sleep 1; |
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unless (kill 'USR1' => $_) { |
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&logthis ('Child '.$_.' is dead'); |
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&logstatus($$.' is dead'); |
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} |
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} |
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sleep 5; |
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foreach (sort keys %children) { |
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unless (-e "$docdir/lon-status/londchld/$_.txt") { |
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&logthis('Child '.$_.' did not respond'); |
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kill 9 => $_; |
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$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}"; |
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$subj="LON: $perlvar{'lonHostID'} killed lond process $_"; |
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my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`; |
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$execdir=$perlvar{'lonDaemons'}; |
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$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_` |
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} |
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} |
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} |
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# --------------------------------------------------------------------- Logging |
# --------------------------------------------------------------------- Logging |
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sub logthis { |
sub logthis { |
Line 152 sub logthis {
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Line 231 sub logthis {
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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); |
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$lastlog=$local.': '.$message; |
print $fh "$local ($$): $message\n"; |
print $fh "$local ($$): $message\n"; |
} |
} |
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# ------------------------- Conditional log if $DEBUG true. |
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sub Debug { |
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my $message = shift; |
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if($DEBUG) { |
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&logthis($message); |
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} |
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} |
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# ------------------------------------------------------------------ Log status |
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sub logstatus { |
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my $docdir=$perlvar{'lonDocRoot'}; |
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{ |
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my $fh=IO::File->new(">>$docdir/lon-status/londstatus.txt"); |
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print $fh $$."\t".$status."\t".$lastlog."\n"; |
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$fh->close(); |
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} |
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{ |
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my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt"); |
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print $fh $status."\n".$lastlog."\n".time; |
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$fh->close(); |
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} |
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} |
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sub initnewstatus { |
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my $docdir=$perlvar{'lonDocRoot'}; |
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my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt"); |
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my $now=time; |
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my $local=localtime($now); |
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print $fh "LOND status $local - parent $$\n\n"; |
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opendir(DIR,"$docdir/lon-status/londchld"); |
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while ($filename=readdir(DIR)) { |
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unlink("$docdir/lon-status/londchld/$filename"); |
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} |
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closedir(DIR); |
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} |
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# -------------------------------------------------------------- Status setting |
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sub status { |
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my $what=shift; |
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my $now=time; |
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my $local=localtime($now); |
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$status=$local.': '.$what; |
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} |
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# -------------------------------------------------------- Escape Special Chars |
# -------------------------------------------------------- Escape Special Chars |
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Line 184 sub reconlonc {
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Line 308 sub reconlonc {
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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 => $loncpid; |
sleep 1; |
sleep 5; |
if (-e "$peerfile") { return; } |
if (-e "$peerfile") { return; } |
&logthis("$peerfile still not there, give it another try"); |
&logthis("$peerfile still not there, give it another try"); |
sleep 5; |
sleep 10; |
if (-e "$peerfile") { return; } |
if (-e "$peerfile") { return; } |
&logthis( |
&logthis( |
"<font color=blue>WARNING: $peerfile still not there, giving up</font>"); |
"<font color=blue>WARNING: $peerfile still not there, giving up</font>"); |
Line 225 sub reply {
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Line 349 sub reply {
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if ($answer eq 'con_lost') { |
if ($answer eq 'con_lost') { |
$answer=subreply("ping",$server); |
$answer=subreply("ping",$server); |
if ($answer ne $server) { |
if ($answer ne $server) { |
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&logthis("sub reply: answer != server"); |
&reconlonc("$perlvar{'lonSockDir'}/$server"); |
&reconlonc("$perlvar{'lonSockDir'}/$server"); |
} |
} |
$answer=subreply($cmd,$server); |
$answer=subreply($cmd,$server); |
Line 290 sub ishome {
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Line 415 sub ishome {
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$fpid=fork; |
$fpid=fork; |
exit if $fpid; |
exit if $fpid; |
catchdie "Couldn't fork: $!" unless defined ($fpid); |
die "Couldn't fork: $!" unless defined ($fpid); |
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POSIX::setsid() or catchdie "Can't start new session: $!"; |
POSIX::setsid() or die "Can't start new session: $!"; |
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# ------------------------------------------------------- Write our PID on disk |
# ------------------------------------------------------- Write our PID on disk |
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Line 301 open (PIDSAVE,">$execdir/logs/lond.pid")
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Line 426 open (PIDSAVE,">$execdir/logs/lond.pid")
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print PIDSAVE "$$\n"; |
print PIDSAVE "$$\n"; |
close(PIDSAVE); |
close(PIDSAVE); |
&logthis("<font color=red>CRITICAL: ---------- Starting ----------</font>"); |
&logthis("<font color=red>CRITICAL: ---------- Starting ----------</font>"); |
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&status('Starting'); |
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# ------------------------------------------------------- Now we are on our own |
# ------------------------------------------------------- Now we are on our own |
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Line 311 for (1 .. $PREFORK) {
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Line 437 for (1 .. $PREFORK) {
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# ----------------------------------------------------- Install signal handlers |
# ----------------------------------------------------- Install signal handlers |
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&status('Forked children'); |
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$SIG{CHLD} = \&REAPER; |
$SIG{CHLD} = \&REAPER; |
$SIG{INT} = $SIG{TERM} = \&HUNTSMAN; |
$SIG{INT} = $SIG{TERM} = \&HUNTSMAN; |
$SIG{HUP} = \&HUPSMAN; |
$SIG{HUP} = \&HUPSMAN; |
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$SIG{USR1} = \&checkchildren; |
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# And maintain the population. |
# And maintain the population. |
while (1) { |
while (1) { |
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&status('Sleeping'); |
sleep; # wait for a signal (i.e., child's death) |
sleep; # wait for a signal (i.e., child's death) |
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&logthis('Woke up'); |
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&status('Woke up'); |
for ($i = $children; $i < $PREFORK; $i++) { |
for ($i = $children; $i < $PREFORK; $i++) { |
make_new_child(); # top up the child pool |
make_new_child(); # top up the child pool |
} |
} |
Line 331 sub make_new_child {
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Line 463 sub make_new_child {
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# 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 catchdie "Can't block SIGINT for fork: $!\n"; |
or die "Can't block SIGINT for fork: $!\n"; |
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catchdie "fork: $!" unless defined ($pid = fork); |
die "fork: $!" unless defined ($pid = fork); |
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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 catchdie "Can't unblock SIGINT for fork: $!\n"; |
or die "Can't unblock SIGINT for fork: $!\n"; |
$children{$pid} = 1; |
$children{$pid} = 1; |
$children++; |
$children++; |
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&status('Started child '.$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 |
$SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before |
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$SIG{USR1}= \&logstatus; |
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$SIG{ALRM}= \&timeout; |
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$lastlog='Forked '; |
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$status='Forked'; |
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# unblock signals |
# unblock signals |
sigprocmask(SIG_UNBLOCK, $sigset) |
sigprocmask(SIG_UNBLOCK, $sigset) |
or catchdie "Can't unblock SIGINT for fork: $!\n"; |
or die "Can't unblock SIGINT for fork: $!\n"; |
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$tmpsnum=0; |
$tmpsnum=0; |
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# handle connections until we've reached $MAX_CLIENTS_PER_CHILD |
# handle connections until we've reached $MAX_CLIENTS_PER_CHILD |
for ($i=0; $i < $MAX_CLIENTS_PER_CHILD; $i++) { |
for ($i=0; $i < $MAX_CLIENTS_PER_CHILD; $i++) { |
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&status('Idle, waiting for connection'); |
$client = $server->accept() or last; |
$client = $server->accept() or last; |
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&status('Accepted connection'); |
# ============================================================================= |
# ============================================================================= |
# do something with the connection |
# do something with the connection |
# ----------------------------------------------------------------------------- |
# ----------------------------------------------------------------------------- |
Line 365 sub make_new_child {
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Line 503 sub make_new_child {
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my $clientip=inet_ntoa($iaddr); |
my $clientip=inet_ntoa($iaddr); |
my $clientrec=($hostid{$clientip} ne undef); |
my $clientrec=($hostid{$clientip} ne undef); |
&logthis( |
&logthis( |
"<font color=yellow>INFO: Connect from $clientip ($hostid{$clientip})</font>"); |
"<font color=yellow>INFO: Connection $i, $clientip ($hostid{$clientip})</font>" |
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); |
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&status("Connecting $clientip ($hostid{$clientip})"); |
my $clientok; |
my $clientok; |
if ($clientrec) { |
if ($clientrec) { |
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&status("Waiting for init from $clientip ($hostid{$clientip})"); |
my $remotereq=<$client>; |
my $remotereq=<$client>; |
$remotereq=~s/\W//g; |
$remotereq=~s/\W//g; |
if ($remotereq eq 'init') { |
if ($remotereq eq 'init') { |
my $challenge="$$".time; |
my $challenge="$$".time; |
print $client "$challenge\n"; |
print $client "$challenge\n"; |
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&status( |
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"Waiting for challenge reply from $clientip ($hostid{$clientip})"); |
$remotereq=<$client>; |
$remotereq=<$client>; |
$remotereq=~s/\W//g; |
$remotereq=~s/\W//g; |
if ($challenge eq $remotereq) { |
if ($challenge eq $remotereq) { |
Line 381 sub make_new_child {
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Line 524 sub make_new_child {
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} else { |
} else { |
&logthis( |
&logthis( |
"<font color=blue>WARNING: $clientip did not reply challenge</font>"); |
"<font color=blue>WARNING: $clientip did not reply challenge</font>"); |
print $client "bye\n"; |
&status('No challenge reply '.$clientip); |
} |
} |
} else { |
} else { |
&logthis( |
&logthis( |
"<font color=blue>WARNING: " |
"<font color=blue>WARNING: " |
."$clientip failed to initialize: >$remotereq< </font>"); |
."$clientip failed to initialize: >$remotereq< </font>"); |
print $client "bye\n"; |
&status('No init '.$clientip); |
} |
} |
} else { |
} else { |
&logthis( |
&logthis( |
"<font color=blue>WARNING: Unknown client $clientip</font>"); |
"<font color=blue>WARNING: Unknown client $clientip</font>"); |
print $client "bye\n"; |
&status('Hung up on '.$clientip); |
} |
} |
if ($clientok) { |
if ($clientok) { |
# ---------------- New known client connecting, could mean machine online again |
# ---------------- New known client connecting, could mean machine online again |
|
|
&reconlonc("$perlvar{'lonSockDir'}/$hostid{$clientip}"); |
&reconlonc("$perlvar{'lonSockDir'}/$hostid{$clientip}"); |
&logthis( |
&logthis( |
"<font color=green>Established connection: $hostid{$clientip}</font>"); |
"<font color=green>Established connection: $hostid{$clientip}</font>"); |
|
&status('Will listen to '.$hostid{$clientip}); |
# ------------------------------------------------------------ Process requests |
# ------------------------------------------------------------ Process requests |
while (my $userinput=<$client>) { |
while (my $userinput=<$client>) { |
chomp($userinput); |
chomp($userinput); |
|
Debug("Request = $userinput\n"); |
|
&status('Processing '.$hostid{$clientip}.': '.$userinput); |
my $wasenc=0; |
my $wasenc=0; |
|
alarm(120); |
# ------------------------------------------------------------ See if encrypted |
# ------------------------------------------------------------ See if encrypted |
if ($userinput =~ /^enc/) { |
if ($userinput =~ /^enc/) { |
if ($cipher) { |
if ($cipher) { |
Line 416 sub make_new_child {
|
Line 564 sub make_new_child {
|
} |
} |
$userinput=substr($userinput,0,$cmdlength); |
$userinput=substr($userinput,0,$cmdlength); |
$wasenc=1; |
$wasenc=1; |
} |
|
} |
} |
|
} |
|
|
# ------------------------------------------------------------- Normal commands |
# ------------------------------------------------------------- Normal commands |
# ------------------------------------------------------------------------ ping |
# ------------------------------------------------------------------------ ping |
if ($userinput =~ /^ping/) { |
if ($userinput =~ /^ping/) { |
Line 450 sub make_new_child {
|
Line 599 sub make_new_child {
|
$loadavg =~ s/\s.*//g; |
$loadavg =~ s/\s.*//g; |
my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'}; |
my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'}; |
print $client "$loadpercent\n"; |
print $client "$loadpercent\n"; |
|
# ----------------------------------------------------------------- currentauth |
|
} elsif ($userinput =~ /^currentauth/) { |
|
if ($wasenc==1) { |
|
my ($cmd,$udom,$uname)=split(/:/,$userinput); |
|
my $result = GetAuthType($udom, $uname); |
|
if($result eq "nouser") { |
|
print $client "unknown_user\n"; |
|
} |
|
else { |
|
print $client "$result\n" |
|
} |
|
} else { |
|
print $client "refused\n"; |
|
} |
# ------------------------------------------------------------------------ auth |
# ------------------------------------------------------------------------ auth |
} elsif ($userinput =~ /^auth/) { |
} elsif ($userinput =~ /^auth/) { |
if ($wasenc==1) { |
if ($wasenc==1) { |
Line 469 sub make_new_child {
|
Line 632 sub make_new_child {
|
(crypt($upass,$contentpwd) eq $contentpwd); |
(crypt($upass,$contentpwd) eq $contentpwd); |
} elsif ($howpwd eq 'unix') { |
} elsif ($howpwd eq 'unix') { |
$contentpwd=(getpwnam($uname))[1]; |
$contentpwd=(getpwnam($uname))[1]; |
$pwdcorrect= |
my $pwauth_path="/usr/local/sbin/pwauth"; |
(crypt($upass,$contentpwd) eq $contentpwd); |
unless ($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 ($howpwd eq 'krb4') { |
} elsif ($howpwd eq 'krb4') { |
|
$null=pack("C",0); |
|
unless ($upass=~/$null/) { |
$pwdcorrect=( |
$pwdcorrect=( |
Authen::Krb4::get_pw_in_tkt($uname,"", |
Authen::Krb4::get_pw_in_tkt($uname,"", |
$contentpwd,'krbtgt',$contentpwd,1, |
$contentpwd,'krbtgt',$contentpwd,1, |
$upass) == 0); |
$upass) == 0); |
} |
} else { $pwdcorrect=0; } |
|
} elsif ($howpwd eq 'localauth') { |
|
$pwdcorrect=&localauth::localauth($uname,$upass, |
|
$contentpwd); |
|
} |
if ($pwdcorrect) { |
if ($pwdcorrect) { |
print $client "authorized\n"; |
print $client "authorized\n"; |
} else { |
} else { |
Line 494 sub make_new_child {
|
Line 673 sub make_new_child {
|
my |
my |
($cmd,$udom,$uname,$upass,$npass)=split(/:/,$userinput); |
($cmd,$udom,$uname,$upass,$npass)=split(/:/,$userinput); |
chomp($npass); |
chomp($npass); |
my $proname=propath($udom,$uname); |
$upass=&unescape($upass); |
|
$npass=&unescape($npass); |
|
&logthis("Trying to change password for $uname"); |
|
my $proname=propath($udom,$uname); |
my $passfilename="$proname/passwd"; |
my $passfilename="$proname/passwd"; |
if (-e $passfilename) { |
if (-e $passfilename) { |
my $realpasswd; |
my $realpasswd; |
Line 508 sub make_new_child {
|
Line 690 sub make_new_child {
|
$salt=substr($salt,6,2); |
$salt=substr($salt,6,2); |
my $ncpass=crypt($npass,$salt); |
my $ncpass=crypt($npass,$salt); |
{ my $pf = IO::File->new(">$passfilename"); |
{ my $pf = IO::File->new(">$passfilename"); |
print $pf "internal:$ncpass\n";; } |
print $pf "internal:$ncpass\n"; } |
|
&logthis("Result of password change for $uname: pwchange_success"); |
print $client "ok\n"; |
print $client "ok\n"; |
} else { |
} else { |
print $client "non_authorized\n"; |
print $client "non_authorized\n"; |
} |
} |
} else { |
} elsif ($howpwd eq 'unix') { |
|
# Unix means we have to access /etc/password |
|
# one way or another. |
|
# First: Make sure the current password is |
|
# correct |
|
$contentpwd=(getpwnam($uname))[1]; |
|
my $pwdcorrect = "0"; |
|
my $pwauth_path="/usr/local/sbin/pwauth"; |
|
unless ($contentpwd eq 'x') { |
|
$pwdcorrect= |
|
(crypt($upass,$contentpwd) eq $contentpwd); |
|
} elsif (-e $pwauth_path) { |
|
open PWAUTH, "|$pwauth_path" or |
|
die "Cannot invoke authentication"; |
|
print PWAUTH "$uname\n$upass\n"; |
|
close PWAUTH; |
|
$pwdcorrect=!$?; |
|
} |
|
if ($pwdcorrect) { |
|
my $execdir=$perlvar{'lonDaemons'}; |
|
my $pf = IO::File->new("|$execdir/lcpasswd"); |
|
print $pf "$uname\n$npass\n$npass\n"; |
|
close $pf; |
|
my $result = ($?>0 ? 'pwchange_failure' |
|
: 'ok'); |
|
&logthis("Result of password change for $uname: $result"); |
|
print $client "$result\n"; |
|
} else { |
|
print $client "non_authorized\n"; |
|
} |
|
} else { |
print $client "auth_mode_error\n"; |
print $client "auth_mode_error\n"; |
} |
} |
} else { |
} else { |
Line 522 sub make_new_child {
|
Line 735 sub make_new_child {
|
} else { |
} else { |
print $client "refused\n"; |
print $client "refused\n"; |
} |
} |
|
# -------------------------------------------------------------------- makeuser |
|
} elsif ($userinput =~ /^makeuser/) { |
|
Debug("Make user received"); |
|
my $oldumask=umask(0077); |
|
if ($wasenc==1) { |
|
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 $perlvar{'lonDefDomain'}) { |
|
print $client "not_right_domain\n"; |
|
} else { |
|
@fpparts=split(/\//,$proname); |
|
$fpnow=$fpparts[0].'/'.$fpparts[1].'/'.$fpparts[2]; |
|
$fperror=''; |
|
for ($i=3;$i<=$#fpparts;$i++) { |
|
$fpnow.='/'.$fpparts[$i]; |
|
unless (-e $fpnow) { |
|
unless (mkdir($fpnow,0777)) { |
|
$fperror="error:$!"; |
|
} |
|
} |
|
} |
|
unless ($fperror) { |
|
if ($umode eq 'krb4') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "krb4:$npass\n"; |
|
} |
|
print $client "ok\n"; |
|
} elsif ($umode eq 'internal') { |
|
my $salt=time; |
|
$salt=substr($salt,6,2); |
|
my $ncpass=crypt($npass,$salt); |
|
{ |
|
&Debug("Creating internal auth"); |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "internal:$ncpass\n"; |
|
} |
|
print $client "ok\n"; |
|
} elsif ($umode eq 'localauth') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "localauth:$npass\n"; |
|
} |
|
print $client "ok\n"; |
|
} elsif ($umode eq 'unix') { |
|
{ |
|
my $execpath="$perlvar{'lonDaemons'}/". |
|
"lcuseradd"; |
|
{ |
|
&Debug("Executing external: ". |
|
$execpath); |
|
my $se = IO::File->new("|$execpath"); |
|
print $se "$uname\n"; |
|
print $se "$npass\n"; |
|
print $se "$npass\n"; |
|
} |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "unix:\n"; |
|
} |
|
print $client "ok\n"; |
|
} elsif ($umode eq 'none') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "none:\n"; |
|
} |
|
print $client "ok\n"; |
|
} else { |
|
print $client "auth_mode_error\n"; |
|
} |
|
} else { |
|
print $client "$fperror\n"; |
|
} |
|
} |
|
} else { |
|
print $client "refused\n"; |
|
} |
|
umask($oldumask); |
|
# -------------------------------------------------------------- changeuserauth |
|
} elsif ($userinput =~ /^changeuserauth/) { |
|
&Debug("Changing authorization"); |
|
if ($wasenc==1) { |
|
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 $perlvar{'lonDefDomain'}) { |
|
print $client "not_right_domain\n"; |
|
} else { |
|
if ($umode eq 'krb4') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "krb4:$npass\n"; |
|
} |
|
print $client "ok\n"; |
|
} elsif ($umode eq 'internal') { |
|
my $salt=time; |
|
$salt=substr($salt,6,2); |
|
my $ncpass=crypt($npass,$salt); |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "internal:$ncpass\n"; |
|
} |
|
print $client "ok\n"; |
|
} elsif ($umode eq 'localauth') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "localauth:$npass\n"; |
|
} |
|
print $client "ok\n"; |
|
} elsif ($umode eq 'unix') { |
|
{ |
|
my $execpath="$perlvar{'lonDaemons'}/". |
|
"lcuseradd"; |
|
{ |
|
my $se = IO::File->new("|$execpath"); |
|
print $se "$uname\n"; |
|
print $se "$npass\n"; |
|
print $se "$npass\n"; |
|
} |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "unix:\n"; |
|
} |
|
print $client "ok\n"; |
|
} elsif ($umode eq 'none') { |
|
{ |
|
my $pf = IO::File->new(">$passfilename"); |
|
print $pf "none:\n"; |
|
} |
|
print $client "ok\n"; |
|
} else { |
|
print $client "auth_mode_error\n"; |
|
} |
|
} |
|
} else { |
|
print $client "refused\n"; |
|
} |
# ------------------------------------------------------------------------ home |
# ------------------------------------------------------------------------ home |
} elsif ($userinput =~ /^home/) { |
} elsif ($userinput =~ /^home/) { |
my ($cmd,$udom,$uname)=split(/:/,$userinput); |
my ($cmd,$udom,$uname)=split(/:/,$userinput); |
Line 565 sub make_new_child {
|
Line 928 sub make_new_child {
|
"LWP GET: $message for $fname ($remoteurl)"); |
"LWP GET: $message for $fname ($remoteurl)"); |
} else { |
} else { |
if ($remoteurl!~/\.meta$/) { |
if ($remoteurl!~/\.meta$/) { |
|
my $ua=new LWP::UserAgent; |
my $mrequest= |
my $mrequest= |
new HTTP::Request('GET',$remoteurl.'.meta'); |
new HTTP::Request('GET',$remoteurl.'.meta'); |
my $mresponse= |
my $mresponse= |
Line 612 sub make_new_child {
|
Line 976 sub make_new_child {
|
print $sh "$clientip:$now\n"; |
print $sh "$clientip:$now\n"; |
} |
} |
} |
} |
|
unless ($fname=~/\.meta$/) { |
|
unlink("$fname.meta.$hostid{$clientip}"); |
|
} |
$fname=~s/\/home\/httpd\/html\/res/raw/; |
$fname=~s/\/home\/httpd\/html\/res/raw/; |
$fname="http://$thisserver/".$fname; |
$fname="http://$thisserver/".$fname; |
print $client "$fname\n"; |
print $client "$fname\n"; |
Line 647 sub make_new_child {
|
Line 1014 sub make_new_child {
|
chomp($what); |
chomp($what); |
my $proname=propath($udom,$uname); |
my $proname=propath($udom,$uname); |
my $now=time; |
my $now=time; |
{ |
unless ($namespace=~/^nohist\_/) { |
my $hfh; |
my $hfh; |
if ( |
if ( |
$hfh=IO::File->new(">>$proname/$namespace.hist") |
$hfh=IO::File->new(">>$proname/$namespace.hist") |
Line 672 sub make_new_child {
|
Line 1039 sub make_new_child {
|
} |
} |
# -------------------------------------------------------------------- rolesput |
# -------------------------------------------------------------------- rolesput |
} elsif ($userinput =~ /^rolesput/) { |
} elsif ($userinput =~ /^rolesput/) { |
|
&Debug("rolesput"); |
if ($wasenc==1) { |
if ($wasenc==1) { |
my ($cmd,$exedom,$exeuser,$udom,$uname,$what) |
my ($cmd,$exedom,$exeuser,$udom,$uname,$what) |
=split(/:/,$userinput); |
=split(/:/,$userinput); |
|
&Debug("cmd = ".$cmd." exedom= ".$exedom. |
|
"user = ".$exeuser." udom=".$udom. |
|
"what = ".$what); |
my $namespace='roles'; |
my $namespace='roles'; |
chomp($what); |
chomp($what); |
my $proname=propath($udom,$uname); |
my $proname=propath($udom,$uname); |
Line 691 sub make_new_child {
|
Line 1062 sub make_new_child {
|
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT,0640)) { |
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_WRCREAT,0640)) { |
foreach $pair (@pairs) { |
foreach $pair (@pairs) { |
($key,$value)=split(/=/,$pair); |
($key,$value)=split(/=/,$pair); |
|
&ManagePermissions($key, $udom, $uname, |
|
&GetAuthType( $udom, |
|
$uname)); |
$hash{$key}=$value; |
$hash{$key}=$value; |
|
|
} |
} |
if (untie(%hash)) { |
if (untie(%hash)) { |
print $client "ok\n"; |
print $client "ok\n"; |
Line 772 sub make_new_child {
|
Line 1147 sub make_new_child {
|
chomp($what); |
chomp($what); |
my $proname=propath($udom,$uname); |
my $proname=propath($udom,$uname); |
my $now=time; |
my $now=time; |
{ |
unless ($namespace=~/^nohist\_/) { |
my $hfh; |
my $hfh; |
if ( |
if ( |
$hfh=IO::File->new(">>$proname/$namespace.hist") |
$hfh=IO::File->new(">>$proname/$namespace.hist") |
Line 814 sub make_new_child {
|
Line 1189 sub make_new_child {
|
} |
} |
# ------------------------------------------------------------------------ dump |
# ------------------------------------------------------------------------ dump |
} elsif ($userinput =~ /^dump/) { |
} elsif ($userinput =~ /^dump/) { |
my ($cmd,$udom,$uname,$namespace) |
my ($cmd,$udom,$uname,$namespace,$regexp) |
=split(/:/,$userinput); |
=split(/:/,$userinput); |
$namespace=~s/\//\_/g; |
$namespace=~s/\//\_/g; |
$namespace=~s/\W//g; |
$namespace=~s/\W//g; |
|
if (defined($regexp)) { |
|
$regexp=&unescape($regexp); |
|
} else { |
|
$regexp='.'; |
|
} |
my $proname=propath($udom,$uname); |
my $proname=propath($udom,$uname); |
my $qresult=''; |
my $qresult=''; |
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER,0640)) { |
if (tie(%hash,'GDBM_File',"$proname/$namespace.db",&GDBM_READER,0640)) { |
foreach $key (keys %hash) { |
foreach $key (keys %hash) { |
$qresult.="$key=$hash{$key}&"; |
if (eval('$key=~/$regexp/')) { |
|
$qresult.="$key=$hash{$key}&"; |
|
} |
} |
} |
if (untie(%hash)) { |
if (untie(%hash)) { |
$qresult=~s/\&$//; |
$qresult=~s/\&$//; |
Line 843 sub make_new_child {
|
Line 1225 sub make_new_child {
|
chomp($what); |
chomp($what); |
my $proname=propath($udom,$uname); |
my $proname=propath($udom,$uname); |
my $now=time; |
my $now=time; |
{ |
unless ($namespace=~/^nohist\_/) { |
my $hfh; |
my $hfh; |
if ( |
if ( |
$hfh=IO::File->new(">>$proname/$namespace.hist") |
$hfh=IO::File->new(">>$proname/$namespace.hist") |
Line 862 sub make_new_child {
|
Line 1244 sub make_new_child {
|
$allkeys.=$key.':'; |
$allkeys.=$key.':'; |
$hash{"$version:$rid:$key"}=$value; |
$hash{"$version:$rid:$key"}=$value; |
} |
} |
$allkeys=~s/:$//; |
$hash{"$version:$rid:timestamp"}=$now; |
|
$allkeys.='timestamp'; |
$hash{"$version:keys:$rid"}=$allkeys; |
$hash{"$version:keys:$rid"}=$allkeys; |
if (untie(%hash)) { |
if (untie(%hash)) { |
print $client "ok\n"; |
print $client "ok\n"; |
Line 908 sub make_new_child {
|
Line 1291 sub make_new_child {
|
} |
} |
# ------------------------------------------------------------------- querysend |
# ------------------------------------------------------------------- querysend |
} elsif ($userinput =~ /^querysend/) { |
} elsif ($userinput =~ /^querysend/) { |
my ($cmd,$query)=split(/:/,$userinput); |
my ($cmd,$query, |
|
$arg1,$arg2,$arg3)=split(/\:/,$userinput); |
$query=~s/\n*$//g; |
$query=~s/\n*$//g; |
print $client sqlreply("$hostid{$clientip}\&$query")."\n"; |
print $client "". |
|
sqlreply("$hostid{$clientip}\&$query". |
|
"\&$arg1"."\&$arg2"."\&$arg3")."\n"; |
# ------------------------------------------------------------------ queryreply |
# ------------------------------------------------------------------ queryreply |
} elsif ($userinput =~ /^queryreply/) { |
} elsif ($userinput =~ /^queryreply/) { |
my ($cmd,$id,$reply)=split(/:/,$userinput); |
my ($cmd,$id,$reply)=split(/:/,$userinput); |
my $store; |
my $store; |
my $execdir=$perlvar{'lonDaemons'}; |
my $execdir=$perlvar{'lonDaemons'}; |
if ($store=IO::File->new(">$execdir/tmp/$id")) { |
if ($store=IO::File->new(">$execdir/tmp/$id")) { |
|
$reply=~s/\&/\n/g; |
print $store $reply; |
print $store $reply; |
close $store; |
close $store; |
|
my $store2=IO::File->new(">$execdir/tmp/$id.end"); |
|
print $store2 "done\n"; |
|
close $store2; |
print $client "ok\n"; |
print $client "ok\n"; |
} |
} |
else { |
else { |
Line 1012 sub make_new_child {
|
Line 1402 sub make_new_child {
|
my $ulsout=''; |
my $ulsout=''; |
my $ulsfn; |
my $ulsfn; |
if (-e $ulsdir) { |
if (-e $ulsdir) { |
while ($ulsfn=<$ulsdir/*>) { |
if(-d $ulsdir) { |
my @ulsstats=stat($ulsfn); |
if (opendir(LSDIR,$ulsdir)) { |
$ulsout.=$ulsfn.'&'.join('&',@ulsstats).':'; |
while ($ulsfn=readdir(LSDIR)) { |
} |
my @ulsstats=stat($ulsdir.'/'.$ulsfn); |
} else { |
$ulsout.=$ulsfn.'&'. |
|
join('&',@ulsstats).':'; |
|
} |
|
closedir(LSDIR); |
|
} |
|
} else { |
|
my @ulsstats=stat($ulsdir); |
|
$ulsout.=$ulsfn.'&'.join('&',@ulsstats).':'; |
|
} |
|
} else { |
$ulsout='no_such_dir'; |
$ulsout='no_such_dir'; |
} |
} |
if ($ulsout eq '') { $ulsout='empty'; } |
if ($ulsout eq '') { $ulsout='empty'; } |
print $client "$ulsout\n"; |
print $client "$ulsout\n"; |
|
# ------------------------------------------------------------------ Hanging up |
|
} elsif (($userinput =~ /^exit/) || |
|
($userinput =~ /^init/)) { |
|
&logthis( |
|
"Client $clientip ($hostid{$clientip}) hanging up: $userinput"); |
|
print $client "bye\n"; |
|
$client->close(); |
|
last; |
# ------------------------------------------------------------- unknown command |
# ------------------------------------------------------------- unknown command |
} else { |
} else { |
# unknown command |
# unknown command |
print $client "unknown_cmd\n"; |
print $client "unknown_cmd\n"; |
} |
} |
# ------------------------------------------------------ client unknown, refuse |
# -------------------------------------------------------------------- complete |
|
alarm(0); |
|
&status('Listening to '.$hostid{$clientip}); |
} |
} |
|
# --------------------------------------------- client unknown or fishy, refuse |
} else { |
} else { |
print $client "refused\n"; |
print $client "refused\n"; |
|
$client->close(); |
&logthis("<font color=blue>WARNING: " |
&logthis("<font color=blue>WARNING: " |
."Rejected client $clientip, closing connection</font>"); |
."Rejected client $clientip, closing connection</font>"); |
} |
} |
&logthis("<font color=red>CRITICAL: " |
} |
."Disconnect from $clientip ($hostid{$clientip})</font>"); |
|
# ============================================================================= |
# ============================================================================= |
} |
|
|
&logthis("<font color=red>CRITICAL: " |
|
."Disconnect from $clientip ($hostid{$clientip})</font>"); |
# tidy up gracefully and finish |
# tidy up gracefully and finish |
|
|
|
$server->close(); |
|
|
# this exit is VERY important, otherwise the child will become |
# this exit is VERY important, otherwise the child will become |
# a producer of more and more children, forking yourself into |
# a producer of more and more children, forking yourself into |
# process death. |
# process death. |
Line 1048 sub make_new_child {
|
Line 1462 sub make_new_child {
|
} |
} |
|
|
|
|
|
# |
|
# 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 = shift; |
|
my $domain = shift; |
|
my $user = shift; |
|
my $authtype= shift; |
|
|
|
# See if the request is of the form /$domain/_au |
|
|
|
if($request =~ /^(\/$domain\/_au)$/) { # It's an author rolesput... |
|
my $execdir = $perlvar{'lonDaemons'}; |
|
my $userhome= "/home/$user" ; |
|
Debug("system $execdir/lchtmldir $userhome $system $authtype"); |
|
system("$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 = shift; |
|
my $user = shift; |
|
|
|
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') { |
|
$availinfo = $contentpwd; |
|
} |
|
|
|
return "$authtype:$availinfo"; |
|
} |
|
else { |
|
Debug("Returning nouser"); |
|
return "nouser"; |
|
} |
|
|
|
} |
|
|
|
# ----------------------------------- 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 * |
|
|
|
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 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 |
|
|
|
=head1 COREQUISITES |
|
|
|
=head1 OSNAMES |
|
|
|
linux |
|
|
|
=head1 SCRIPT CATEGORIES |
|
|
|
Server/Process |
|
|
|
=cut |