. * All rights reserved. * * modified for the pfsense snort package * Copyright (C) 2009-2010 Robert Zelaya. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ require_once("guiconfig.inc"); require_once("/usr/local/pkg/snort/snort.inc"); global $g, $rebuild_rules; $snortdir = SNORTDIR; $flowbit_rules_file = FLOWBITS_FILENAME; $rules_map = array(); $supplist = array(); if (!is_array($config['installedpackages']['snortglobal']['rule'])) { $config['installedpackages']['snortglobal']['rule'] = array(); } $a_nat = &$config['installedpackages']['snortglobal']['rule']; // Set who called us so we can return to the correct page with // the RETURN button. We will just trust this User-Agent supplied // string for now. session_start(); if(!isset($_SESSION['org_referer'])) $_SESSION['org_referer'] = $_SERVER['HTTP_REFERER']; $referrer = $_SESSION['org_referer']; if ($_POST['cancel']) { session_start(); unset($_SESSION['org_referer']); session_write_close(); header("Location: {$referrer}"); exit; } $id = $_GET['id']; if (isset($_POST['id'])) $id = $_POST['id']; if (is_null($id)) { session_start(); unset($_SESSION['org_referer']); session_write_close(); header("Location: /snort/snort_interfaces.php"); exit; } $if_real = snort_get_real_interface($a_nat[$id]['interface']); $snort_uuid = $a_nat[$id]['uuid']; /* We should normally never get to this page if Auto-Flowbits are disabled, but just in case... */ if ($a_nat[$id]['autoflowbitrules'] == 'on') { if (file_exists("{$snortdir}/snort_{$snort_uuid}_{$if_real}/rules/{$flowbit_rules_file}") && filesize("{$snortdir}/snort_{$snort_uuid}_{$if_real}/rules/{$flowbit_rules_file}") > 0) { $rules_map = snort_load_rules_map("{$snortdir}/snort_{$snort_uuid}_{$if_real}/rules/{$flowbit_rules_file}"); } else $savemsg = gettext("There are no flowbit-required rules necessary for the current enforcing rule set."); } else $input_errors[] = gettext("Auto-Flowbit rule generation is disabled for this interface!"); if ($_GET['act'] == "addsuppress" && is_numeric($_GET['sidid']) && is_numeric($_GET['gen_id'])) { $descr = snort_get_msg($rules_map[$_GET['gen_id']][$_GET['sidid']]['rule']); if (empty($descr)) $suppress = "suppress gen_id {$_GET['gen_id']}, sig_id {$_GET['sidid']}\n"; else $suppress = "# {$descr}\nsuppress gen_id {$_GET['gen_id']}, sig_id {$_GET['sidid']}"; if (!is_array($config['installedpackages']['snortglobal']['suppress'])) $config['installedpackages']['snortglobal']['suppress'] = array(); if (!is_array($config['installedpackages']['snortglobal']['suppress']['item'])) $config['installedpackages']['snortglobal']['suppress']['item'] = array(); $a_suppress = &$config['installedpackages']['snortglobal']['suppress']['item']; $found_list = false; if (empty($a_nat[$id]['suppresslistname']) || $a_nat[$id]['suppresslistname'] == 'default') { $s_list = array(); $s_list['uuid'] = uniqid(); $s_list['name'] = $a_nat[$id]['interface'] . "suppress" . "_" . $s_list['uuid']; $s_list['descr'] = "Auto-generated list for Alert suppression"; $s_list['suppresspassthru'] = base64_encode($suppress); $a_suppress[] = $s_list; $a_nat[$id]['suppresslistname'] = $s_list['name']; $found_list = true; } else { /* If we get here, a Suppress List is defined for the interface so see if we can find it */ foreach ($a_suppress as $a_id => $alist) { if ($alist['name'] == $a_nat[$id]['suppresslistname']) { $found_list = true; if (!empty($alist['suppresspassthru'])) { $tmplist = base64_decode($alist['suppresspassthru']); $tmplist .= "\n{$suppress}"; $alist['suppresspassthru'] = base64_encode($tmplist); $a_suppress[$a_id] = $alist; } else { $alist['suppresspassthru'] = base64_encode($suppress); $a_suppress[$a_id] = $alist; } } } } if ($found_list) { write_config(); $rebuild_rules = false; sync_snort_package_config(); snort_reload_config($a_nat[$id]); $savemsg = gettext("An entry to suppress the Alert for 'gen_id {$_GET['gen_id']}, sig_id {$_GET['sidid']}' has been added to Suppress List '{$a_nat[$id]['suppresslistname']}'."); } else { /* We did not find the defined list, so notify the user with an error */ $input_errors[] = gettext("Suppress List '{$a_nat[$id]['suppresslistname']}' is defined for this interface, but it could not be found!"); } } function truncate($string, $length) { /******************************** * This function truncates the * * passed string to the length * * specified adding ellipsis if * * truncation was necessary. * ********************************/ if (strlen($string) > $length) $string = substr($string, 0, ($length - 3)) . "..."; return $string; } /* Load up an array with the current Suppression List GID,SID values */ $supplist = snort_load_suppress_sigs($a_nat[$id]); $if_friendly = snort_get_friendly_interface($a_nat[$id]['interface']); $pgtitle = gettext("Snort: Interface {$if_friendly} - Flowbit Rules"); include_once("head.inc"); ?> ' . $pgtitle . '

';} if ($input_errors) print_input_errors($input_errors); if ($savemsg) print_info_box($savemsg); ?>
20): ?>
/>
" . gettext("Note: ") . "". gettext("the icon is only ") . gettext("displayed for flowbit rules without the \"noalert\" option."); ?>
$rulem) { foreach ($rulem as $k2 => $v) { $sid = snort_get_sid($v['rule']); $gid = snort_get_gid($v['rule']); // Pick off the first section of the rule (prior to the start of the MSG field), // and then use a REGX split to isolate the remaining fields into an array. $tmp = substr($v['rule'], 0, strpos($v['rule'], "(")); $tmp = trim(preg_replace('/^\s*#+\s*/', '', $tmp)); $rule_content = preg_split('/[\s]+/', $tmp); $protocol = $rule_content[1]; //protocol $source = truncate($rule_content[2], 14); //source $destination = truncate($rule_content[5], 14); //destination $message = snort_get_msg($v['rule']); $flowbits = implode("; ", snort_get_flowbits($v['rule'])); if (strstr($flowbits, "noalert")) $supplink = ""; else { if (!isset($supplist[$gid][$sid])) { $supplink = ""; $supplink .= ""; } else { $supplink = ""; } } // Use "echo" to write the table HTML row-by-row. echo "" . "" . "" . "" . "" . "" . "" . ""; $count++; } } unset($rulem, $v); ?>
{$sid} {$supplink}{$protocol}{$source}{$destination}{$flowbits}{$message}
/>