src/scripts/update-ids-ruleset

   1 #!/usr/bin/perl
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2018-2021 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 # Hash to store the configured providers.
  30 my %providers = ();
  31
  32 # The user and group name as which this script should be run.
  33 my $run_as = 'nobody';
  34
  35 # Get user and group id of the user.
  36 my ( $uid, $gid ) = ( getpwnam $run_as )[ 2, 3 ];
  37
  38 # Check if the script currently runs as root.
  39 if ( $> == 0 ) {
  40         # Drop privileges and switch to the specified user and group.
  41         POSIX::setgid( $gid );
  42         POSIX::setuid( $uid );
  43 }
  44
  45 # Check if the red device is active.
  46 unless (-e "${General::swroot}/red/active") {
  47         # Store notice in the syslog.
  48         &IDS::_log_to_syslog("The system is offline.");
  49
  50         # Store error message for displaying in the WUI.
  51         &IDS::_store_error_message("$Lang::tr{'could not download latest updates'} - $Lang::tr{'system is offline'}");
  52
  53         # Exit.
  54         exit 0;
  55 }
  56
  57 # Check if enought free disk space is availabe.
  58 if(&IDS::checkdiskspace()) {
  59         # Store the error message for displaying in the WUI.
  60         &IDS::_store_error_message("$Lang::tr{'not enough disk space'}");
  61
  62         # Exit.
  63         exit 0;
  64 }
  65
  66 # Lock the IDS page.
  67 &IDS::lock_ids_page();
  68
  69 # Grab the configured providers.
  70 &General::readhasharray("$IDS::providers_settings_file", \%providers);
  71
  72 # Loop through the array of available providers.
  73 foreach my $id (keys %providers) {
  74         # Assign some nice variabled.
  75         my $provider = $providers{$id}[0];
  76         my $autoupdate_status = $providers{$id}[3];
  77
  78         # Skip the provider if autoupdate is not enabled.
  79         next unless($autoupdate_status eq "enabled");
  80
  81         # Call the download function and gather the new ruleset for the current processed provider.
  82         if(&IDS::downloadruleset($provider)) {
  83                 # Store error message for displaying in the WUI.
  84                 &IDS::_store_error_message("$provider: $Lang::tr{'could not download latest updates'}");
  85
  86                 # Unlock the IDS page.
  87                 &IDS::unlock_ids_page();
  88
  89                 # Exit.
  90                 exit 0;
  91         }
  92
  93         # Get path and name of the stored rules file or archive.
  94         my $stored_file = &IDS::_get_dl_rulesfile($provider);
  95
  96         # Set correct ownership for the downloaded tarball.
  97         &IDS::set_ownership("$stored_file");
  98 }
  99
 100 # Call oinkmaster to alter the ruleset.
 101 &IDS::oinkmaster();
 102
 103 # Set correct ownership for the rulesdir and files.
 104 &IDS::set_ownership("$IDS::rulespath");
 105
 106 # Unlock the IDS page.
 107 &IDS::unlock_ids_page();
 108
 109 # Check if the IDS is running.
 110 if(&IDS::ids_is_running()) {
 111         # Call suricatactrl to perform a reload.
 112         &IDS::call_suricatactrl("reload");
 113 }
 114
 115 1;