loncom/lond - diff

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Diff for /loncom/lond between versions 1.59 and 1.73

version 1.59, 2001/11/27 21:59:07	version 1.73, 2002/02/25 20:43:15
Line 1	Line 1
#!/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)
	#
	# $Id$
	#
	# Copyright Michigan State University Board of Trustees
	#
	# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
	#
	# LON-CAPA is free software; you can redistribute it and/or modify
	# it under the terms of the GNU General Public License as published by
	# the Free Software Foundation; either version 2 of the License, or
	# (at your option) any later version.
	#
	# LON-CAPA is distributed in the hope that it will be useful,
	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	# GNU General Public License for more details.
	#
	# You should have received a copy of the GNU General Public License
	# along with LON-CAPA; if not, write to the Free Software
	# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	#
	# /home/httpd/html/adm/gpl.txt
	#
	# http://www.lon-capa.org/
	#
# 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,
Line 10	Line 35
# 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
# 12/05,12/13,12/29 Gerd Kortemeyer	# 12/05,12/13,12/29 Gerd Kortemeyer
	# YEAR=2001
# Jan 01 Scott Harrison	# Jan 01 Scott Harrison
# 02/12 Gerd Kortemeyer	# 02/12 Gerd Kortemeyer
# 03/15 Scott Harrison	# 03/15 Scott Harrison
Line 18	Line 44
# 05/11,05/28,08/30 Gerd Kortemeyer	# 05/11,05/28,08/30 Gerd Kortemeyer
# 9/30,10/22,11/13,11/15,11/16 Scott Harrison	# 9/30,10/22,11/13,11/15,11/16 Scott Harrison
# 11/26,11/27 Gerd Kortemeyer	# 11/26,11/27 Gerd Kortemeyer
#	# 12/20 Scott Harrison
# $Id$	# 12/22 Gerd Kortemeyer
	# YEAR=2002
	# 01/20/02,02/05 Gerd Kortemeyer
	# 02/05 Guy Albertelli
	# 02/07 Scott Harrison
	# 02/12 Gerd Kortemeyer
	# 02/19 Matthew Hall
	# 02/25 Gerd Kortemeyer
###	###

# based on "Perl Cookbook" ISBN 1-56592-243-3	# based on "Perl Cookbook" ISBN 1-56592-243-3
Line 57 sub catchexception {	Line 90 sub catchexception {
die($error);	die($error);
}	}

	sub timeout {
	&logthis("<font color=ref>CRITICAL: TIME OUT ".$$."</font>");
	&catchexception('Timeout');
	}
# -------------------------------- Set signal handlers to record abnormal exits	# -------------------------------- Set signal handlers to record abnormal exits

$SIG{'QUIT'}=\&catchexception;	$SIG{'QUIT'}=\&catchexception;
Line 104 open (CONFIG,"$perlvar{'lonTabDir'}/host	Line 141 open (CONFIG,"$perlvar{'lonTabDir'}/host

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 131 $children = 0; # cu	Line 168 $children = 0; # cu
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 --;
	delete $children{$pid};
	} else {
	&logthis("Unknown Child $pid died");
	}
}	}

sub HUNTSMAN { # signal handler for SIGINT	sub HUNTSMAN { # signal handler for SIGINT
Line 160 sub checkchildren {	Line 201 sub checkchildren {
&initnewstatus();	&initnewstatus();
&logstatus();	&logstatus();
&logthis('Going to check on the children');	&logthis('Going to check on the children');
map {	$docdir=$perlvar{'lonDocRoot'};
	foreach (sort keys %children) {
sleep 1;	sleep 1;
unless (kill 'USR1' => $_) {	unless (kill 'USR1' => $_) {
&logthis ('Child '.$_.' is dead');	&logthis ('Child '.$_.' is dead');
&logstatus($$.' is dead');	&logstatus($$.' is dead');
}	}
} sort keys %children;	}
	sleep 5;
	foreach (sort keys %children) {
	unless (-e "$docdir/lon-status/londchld/$_.txt") {
	&logthis('Child '.$_.' did not respond');
	kill 9 => $_;
	$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
	$subj="LON: $perlvar{'lonHostID'} 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 $execdir/logs/lond.log.$_`
	}
	}
}	}

# --------------------------------------------------------------------- Logging	# --------------------------------------------------------------------- Logging
Line 185 sub logthis {	Line 239 sub logthis {

sub logstatus {	sub logstatus {
my $docdir=$perlvar{'lonDocRoot'};	my $docdir=$perlvar{'lonDocRoot'};
	{
my $fh=IO::File->new(">>$docdir/lon-status/londstatus.txt");	my $fh=IO::File->new(">>$docdir/lon-status/londstatus.txt");
print $fh $$."\t".$status."\t".$lastlog."\n";	print $fh $$."\t".$status."\t".$lastlog."\n";
	$fh->close();
	}
	{
	my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt");
	print $fh $status."\n".$lastlog."\n".time;
	$fh->close();
	}
}	}

sub initnewstatus {	sub initnewstatus {
Line 195 sub initnewstatus {	Line 257 sub initnewstatus {
my $now=time;	my $now=time;
my $local=localtime($now);	my $local=localtime($now);
print $fh "LOND status $local - parent $$\n\n";	print $fh "LOND status $local - parent $$\n\n";
	opendir(DIR,"$docdir/lon-status/londchld");
	while ($filename=readdir(DIR)) {
	unlink("$docdir/lon-status/londchld/$filename");
	}
	closedir(DIR);
}	}

# -------------------------------------------------------------- Status setting	# -------------------------------------------------------------- Status setting
Line 404 sub make_new_child {	Line 471 sub make_new_child {
# 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{USR1}= \&logstatus;	$SIG{USR1}= \&logstatus;
	$SIG{ALRM}= \&timeout;
$lastlog='Forked ';	$lastlog='Forked ';
$status='Forked';	$status='Forked';

Line 472 sub make_new_child {	Line 540 sub make_new_child {
chomp($userinput);	chomp($userinput);
&status('Processing '.$hostid{$clientip}.': '.$userinput);	&status('Processing '.$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 573 sub make_new_child {	Line 642 sub make_new_child {
$pwdcorrect=!$?;	$pwdcorrect=!$?;
}	}
} 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') {	} elsif ($howpwd eq 'localauth') {
$pwdcorrect=&localauth::localauth($uname,$upass,	$pwdcorrect=&localauth::localauth($uname,$upass,
$contentpwd);	$contentpwd);
Line 600 sub make_new_child {	Line 672 sub make_new_child {
chomp($npass);	chomp($npass);
$upass=&unescape($upass);	$upass=&unescape($upass);
$npass=&unescape($npass);	$npass=&unescape($npass);
my $proname=propath($udom,$uname);	&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 615 sub make_new_child {	Line 688 sub make_new_child {
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 650 sub make_new_child {	Line 754 sub make_new_child {
$fpnow.='/'.$fpparts[$i];	$fpnow.='/'.$fpparts[$i];
unless (-e $fpnow) {	unless (-e $fpnow) {
unless (mkdir($fpnow,0777)) {	unless (mkdir($fpnow,0777)) {
$fperror="error:$!\n";	$fperror="error:$!";
}	}
}	}
}	}
Line 1063 sub make_new_child {	Line 1167 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 1301 sub make_new_child {	Line 1412 sub make_new_child {
print $client "unknown_cmd\n";	print $client "unknown_cmd\n";
}	}
# -------------------------------------------------------------------- complete	# -------------------------------------------------------------------- complete
	alarm(0);
&status('Listening to '.$hostid{$clientip});	&status('Listening to '.$hostid{$clientip});
}	}
# --------------------------------------------- client unknown or fishy, refuse	# --------------------------------------------- client unknown or fishy, refuse
Line 1317 sub make_new_child {	Line 1429 sub make_new_child {

# tidy up gracefully and finish	# tidy up gracefully and finish

$client->close();
$server->close();	$server->close();

# this exit is VERY important, otherwise the child will become	# this exit is VERY important, otherwise the child will become
Line 1327 sub make_new_child {	Line 1438 sub make_new_child {
}	}
}	}

	# ----------------------------------- POD (plain old documentation, CPAN style)

	=head1 NAME

	lond - "LON Daemon" Server (port "LOND" 5663)

	=head1 SYNOPSIS

	Should only be run as user=www. Invoked by loncron.

	=head1 DESCRIPTION

	Preforker - server who forks first. Runs as a daemon. HUPs.
	Uses IDEA encryption

	=head1 README

	Not yet written.

	=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

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>

Removed from v.1.59
changed lines
	Added in v.1.73