src/scripts/update-ids-ruleset

   1 #!/usr/bin/perl
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2018 IPFire Team  <info@ipfire.org>                           #
   6 #                                                                             #
   7 # This program is free software: you can redistribute it and/or modify        #
   8 # it under the terms of the GNU General Public License as published by        #
   9 # the Free Software Foundation, either version 3 of the License, or           #
  10 # (at your option) any later version.                                         #
  11 #                                                                             #
  12 # This program is distributed in the hope that it will be useful,             #
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of              #
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
  15 # GNU General Public License for more details.                                #
  16 #                                                                             #
  17 # You should have received a copy of the GNU General Public License           #
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
  19 #                                                                             #
  20 ###############################################################################
  21
  22 use strict;
  23 use POSIX;
  24
  25 require '/var/ipfire/general-functions.pl';
  26 require "${General::swroot}/ids-functions.pl";
  27 require "${General::swroot}/lang.pl";
  28
  29 # The user and group name as which this script should be run.
  30 my $run_as = 'nobody';
  31
  32 # Get user and group id of the user.
  33 my ( $uid, $gid ) = ( getpwnam $run_as )[ 2, 3 ];
  34
  35 # Check if the script currently runs as root.
  36 if ( $> == 0 ) {
  37         # Drop privileges and switch to the specified user and group.
  38         POSIX::setgid( $gid );
  39         POSIX::setuid( $uid );
  40 }
  41
  42 # Check if the red device is active.
  43 unless (-e "${General::swroot}/red/active") {
  44         # Store notice in the syslog.
  45         &IDS::_log_to_syslog("The system is offline.");
  46
  47         # Store error message for displaying in the WUI.
  48         &IDS::_store_error_message("$Lang::tr{'could not download latest updates'} - $Lang::tr{'system is offline'}");
  49
  50         # Exit.
  51         exit 0;
  52 }
  53
  54 # Check if enought free disk space is availabe.
  55 if(&IDS::checkdiskspace()) {
  56         # Store the error message for displaying in the WUI.
  57         &IDS::_store_error_message("$Lang::tr{'not enough disk space'}");
  58
  59         # Exit.
  60         exit 0;
  61 }
  62
  63 # Lock the IDS page.
  64 &IDS::lock_ids_page();
  65
  66 # Call the download function and gather the new ruleset.
  67 if(&IDS::downloadruleset()) {
  68         # Store error message for displaying in the WUI.
  69         &IDS::_store_error_message("$Lang::tr{'could not download latest updates'}");
  70
  71         # Unlock the IDS page.
  72         &IDS::unlock_ids_page();
  73
  74         # Exit.
  75         exit 0;
  76 }
  77
  78 # Set correct ownership for the downloaded tarball.
  79 &IDS::set_ownership("$IDS::rulestarball");
  80
  81 # Call oinkmaster to alter the ruleset.
  82 &IDS::oinkmaster();
  83
  84 # Set correct ownership for the rulesdir and files.
  85 &IDS::set_ownership("$IDS::rulespath");
  86
  87 # Unlock the IDS page.
  88 &IDS::unlock_ids_page();
  89
  90 # Check if the IDS is running.
  91 if(&IDS::ids_is_running()) {
  92         # Call suricatactrl to perform a reload.
  93         &IDS::call_suricatactrl("reload");
  94 }
  95
  96 1;