--- loncom/init.d/loncontrol 2003/12/18 21:23:01 1.15 +++ loncom/init.d/loncontrol 2004/12/02 21:16:56 1.22 @@ -2,14 +2,33 @@ # # The LearningOnline Network with CAPA # +# 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/ +# # Startup script for the LON-CAPA network processes # -# YEAR=2000 -# YEAR=2001 -# YEAR=2002 # chkconfig: 345 95 5 -# description: LON-CAPA is a "network of knowledge". It is used to +# description: LON-CAPA is a "network of knowledge". It is used to \ # distribute knowledge resources and instructional management. # processnames: lonc, lond, lonsql # pidfiles: /home/httpd/perl/logs/lon*.pid @@ -22,8 +41,83 @@ $command=$ARGV[0]; $command=~s/[^a-z]//g $ENV{'PATH'}="/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin:/root/bin"; $ENV{'BASH_ENV'}=""; +{ # Firewall variable scoping + # Firewall code is based on the code in FC2 /etc/init.d/ntpd + my $fw_chain = 'RH-Firewall-1-INPUT'; + my $iptables = '/sbin/iptables'; + my $lond_port = 5663; + my $lonhttpd_port = 8080; + +sub firewall_open_port { + return if (! &firewall_is_active); + if (! `$iptables -L -n 2>/dev/null | grep $fw_chain | wc -l`) { return; } + # iptables is running with our chain + # + # We could restrict the servers allowed to attempt to communicate + # here, but the logistics of updating the /home/httpd/lonTabs/host.tab + # file are likely to be a problem + foreach my $port ($lond_port,$lonhttpd_port) { + print "Opening firewall access on port $port.\n"; + + my $firewall_command = + "$iptables -I $fw_chain -p tcp -d 0/0 --dport $port -j ACCEPT"; + system($firewall_command); + my $return_status = $?>>8; + if ($return_status == 1) { + # Error + print "Error opening port.\n"; + } elsif ($return_status == 2) { + # Bad command + print "Bad command error opening port. Command was\n". + " ".$firewall_command."\n"; + } + } + +} + +sub firewall_is_port_open { + # returns 1 if the firewall port is open, 0 if not. + # + # check if firewall is active or installed + return if (! &firewall_is_active); + if (`$iptables -L -n 2>/dev/null | grep "tcp dpt:$port"`) { + return 1; + } else { + return 0; + } +} + +sub firewall_is_active { + if (-e '/proc/net/ip_tables_names') { + return 1; + } else { + return 0; + } +} + +sub firewall_close_port { + return if (! &firewall_is_active); + foreach my $port ($lond_port,$lonhttpd_port) { + print "Closing firewall access on port $port.\n"; + my $firewall_command = + "$iptables -D $fw_chain -p tcp -d 0/0 --dport $port -j ACCEPT"; + system($firewall_command); + my $return_status = $?>>8; + if ($return_status == 1) { + # Error + print "Error closing port.\n"; + } elsif ($return_status == 2) { + # Bad command + print "Bad command error closing port. Command was\n". + " ".$firewall_command."\n"; + } + } +} + +} # End firewall variable scope + sub stop_daemon { - my ($daemon)=@_; + my ($daemon,$killallname)=@_; my $pidfile="/home/httpd/perl/logs/$daemon.pid"; printf("%-10s ",$daemon); @@ -37,65 +131,81 @@ sub stop_daemon { kill KILL => $daemonpid; sleep 2; if (kill 0 => $daemonpid) { - print("failed to kill\n"); return; + print("failed to kill"); } else { - print("killed\n"); return; + print("killed"); } } else { - print("stopped\n"); return; + print("stopped"); } + } else { + print("not running"); } - print("not running\n"); + system("killall -q -0 $killallname"); + if ($? == 0) { + system("killall -q $killallname"); + print(", killed off extraneous processes"); + } + print("\n"); } -if (($command eq "restart") or ($command eq "reload")) { + +if (($command eq "restartold") or ($command eq "reloadold")) { print 'Restarting LON-CAPA'."\n"; print 'Ending LON-CAPA client and daemon processes'."\n"; foreach my $daemon ('lonsql','lond','lonc','lonhttpd') { - &stop_daemon($daemon); + &stop_daemon($daemon,$daemon); } print 'Starting LON-CAPA client and daemon processes (please be patient)'. "\n"; - system("su -c '/home/httpd/perl/loncron' www"); -} -elsif (($command eq "restartnew") or ($command eq "reloadnew")) { + system("su www -c '/home/httpd/perl/loncron --oldlonc --justcheckdaemons'"); +} elsif (($command eq "restart") or ($command eq "reload")) { print 'Restarting LON-CAPA'."\n"; print 'Ending LON-CAPA client and daemon processes'."\n"; foreach my $daemon ('lonsql','lond','lonc','lonhttpd') { - &stop_daemon($daemon); + my $killallname=$daemon; + if ($daemon eq 'lonc') { $killallname='loncnew'; } + &stop_daemon($daemon,$killallname); } print 'Starting LON-CAPA client and daemon processes (please be patient)'. "\n"; - system("su -c '/home/httpd/perl/loncron new' www"); -} -elsif ($command eq "stop") { + system("su www -c '/home/httpd/perl/loncron --justcheckdaemons'"); +} elsif ($command eq "stop") { print 'Stopping LON-CAPA'."\n"; foreach my $daemon ('lonsql','lond','lonc','lonhttpd') { - &stop_daemon($daemon); - } -} -elsif ($command eq "start") { + my $killallname=$daemon; + if ($daemon eq 'lonc') { $killallname='loncnew'; } + &stop_daemon($daemon,$killallname); + } + &firewall_close_port(); +} elsif ($command eq "startold") { + &firewall_open_port(); print 'Starting LON-CAPA'."\n"; print 'Starting LON-CAPA client and daemon processes (please be patient)'. "\n"; - system("su -c '/home/httpd/perl/loncron' www"); -} -elsif ($command eq "startnew") { + system("su www -c '/home/httpd/perl/loncron --oldlonc --justcheckdaemons'"); +} elsif ($command eq "start") { + &firewall_open_port(); print 'Starting LON-CAPA'."\n"; print 'Starting LON-CAPA client and daemon processes (please be patient)'. "\n"; - system("su -c '/home/httpd/perl/loncron new' www"); -} -elsif ($command eq "status") { + system("su www -c '/home/httpd/perl/loncron --justcheckdaemons'"); +} elsif ($command eq "status") { $response=`/bin/cat /home/httpd/perl/logs/*.pid 2>&1`; if ($response=~/No such file or directory/) { print 'LON-CAPA is not running.'."\n"; - } - else { + } else { print 'LON-CAPA is running.'."\n"; + system("su www -c '/home/httpd/perl/loncron --justcheckconnections'"); } -} -else { - print 'You need to specify restart|stop|start|status on the command line'. - ' argument.'."\n"; + if (! &firewall_is_active) { + print 'The iptables firewall is not active'."\n"; + } + if (&firewall_is_port_open()) { + print 'The LON-CAPA port is open in firewall.'."\n"; + } elsif (&firewall_is_active) { + print 'The LON-CAPA port is NOT open in running firewall!'."\n"; + } +} else { + print 'You need to specify one of restart|stop|start|status on the command line.'."\n"; }