File:  [LON-CAPA] / loncom / apachereload
Revision 1.7: download - view: text, annotated - select for diffs
Sat May 14 16:12:53 2011 UTC (11 years, 6 months ago) by raeburn
Branches: MAIN
CVS tags: version_2_11_2_uiuc, version_2_11_2_msu, version_2_11_2_educog, version_2_11_2, version_2_11_1, version_2_11_0_RC3, version_2_11_0_RC2, version_2_11_0_RC1, version_2_11_0, version_2_10_X, version_2_10_1, version_2_10_0, loncapaMITrelate_1, language_hyphenation_merge, language_hyphenation, HEAD, BZ4492-merge, BZ4492-feature_horizontal_radioresponse, BZ4492-feature_Support_horizontal_radioresponse, BZ4492-Support_horizontal_radioresponse
- Duplicated &try_to_lock() routine moved to one location (in
- Try to get locks for lock_apachereload and lock_lciptables before
  making system calls (in lond and loncron respectively).

# The Learning Online Network with CAPA
# apachereload - setuid script that reloads the apache daemon.
# $Id: apachereload,v 1.7 2011/05/14 16:12:53 raeburn Exp $
# 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
# 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

use strict;
#  This script is a setuid script that must be run as user www
#  it effectively just executes /etc/init.d/httpd reload.
#  causing the apache daemon to get HUP'd.  The script is
#  run by lond after re-initing it's host information.

$ENV{'PATH'}='/bin:/usr/bin:/usr/local/sbin:/home/httpd/perl'; # Nullify path
                                                               # information
delete @ENV{qw(IFS CDPATH ENV BASH_ENV)}; # nullify potential taints

my $command = "/etc/init.d/httpd reload";

use lib '/home/httpd/lib/perl/';
use LONCAPA::Configuration;
my %perlvar= %{&LONCAPA::Configuration::read_conf('loncapa.conf')};

my ($execdir) = ($perlvar{'lonDaemons'} =~/(.*)/);
my $dist=`$execdir/distprobe`;
if ($dist =~ /^(suse|sles)/) {
    $command = "/etc/init.d/apache reload";
# Do not print error messages
my $noprint=1;

print "In apachereload" unless $noprint;

# ----------------------------- Make sure this process is running from user=www
my $wwwid=getpwnam('www');
if ($wwwid!=$>) {
    print("User ID mismatch.  This program must be run as user 'www'\n")
	unless $noprint;
    exit 1;

# ----------------------------------- Start running script with www permissions


#  Now run the reload:


exit 0;

# ---------------------------------------------- have setuid script run as root
sub enable_root_capability {
    if ($wwwid==$>) {
    else {
	# root capability is already enabled
    return $>;

# ----------------------------------------------- have setuid script run as www
sub disable_root_capability {
    if ($wwwid==$<) {
    else {
	# root capability is already disabled

=head1 NAME

apachereload -setuid script to reload the apache web server.


LON-CAPA - setuid script to reload the apache web server.

=head1 README

LON-CAPA  setuid script to reload the apache web server.








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