$length) $string = substr($string, 0, ($length - 2)) . "..."; return $string; } function add_title_attribute($tag, $title) { /******************************** * This function adds a "title" * * attribute to the passed tag * * and sets the value to the * * value specified by "$title". * ********************************/ $result = ""; if (empty($tag)) { // If passed an empty element tag, then // just create a tag with title $result = ""; } else { // Find the ending ">" for the element tag $pos = strpos($tag, ">"); if ($pos !== false) { // We found the ">" delimter, so add "title" // attribute and close the element tag $result = substr($tag, 0, $pos) . " title=\"" . $title . "\">"; } else { // We did not find the ">" delimiter, so // something is wrong, just return the // tag "as-is" $result = $tag; } } return $result; } /* convert fake interfaces to real */ $if_real = snort_get_real_interface($pconfig['interface']); $snort_uuid = $a_rule[$id]['uuid']; $snortcfgdir = "{$snortdir}/snort_{$snort_uuid}_{$if_real}"; $snortdownload = $config['installedpackages']['snortglobal']['snortdownload']; $emergingdownload = $config['installedpackages']['snortglobal']['emergingthreats']; $etprodownload = $config['installedpackages']['snortglobal']['emergingthreats_pro']; $categories = explode("||", $pconfig['rulesets']); // add the standard rules files to the categories list $categories[] = "custom.rules"; $categories[] = "decoder.rules"; $categories[] = "preprocessor.rules"; $categories[] = "sensitive-data.rules"; if (!empty($a_rule[$id]['ips_policy'])) $categories[] = "IPS Policy - " . ucfirst($a_rule[$id]['ips_policy']); if ($a_rule[$id]['autoflowbitrules'] == 'on') $categories[] = "Auto-Flowbit Rules"; natcasesort($categories); if ($_GET['openruleset']) $currentruleset = $_GET['openruleset']; else if ($_POST['openruleset']) $currentruleset = $_POST['openruleset']; else $currentruleset = $categories[0]; /* One last sanity check -- if the rules directory is empty, default to loading custom rules */ $tmp = glob("{$snortdir}/rules/*.rules"); if (empty($tmp)) $currentruleset = "custom.rules"; $ruledir = "{$snortdir}/rules"; $rulefile = "{$ruledir}/{$currentruleset}"; if ($currentruleset != 'custom.rules') { // Read the current rules file into our rules map array. // If it is the auto-flowbits file, set the full path. if ($currentruleset == "Auto-Flowbit Rules") $rules_map = snort_load_rules_map("{$snortcfgdir}/rules/" . FLOWBITS_FILENAME); // Test for the special case of an IPS Policy file. elseif (substr($currentruleset, 0, 10) == "IPS Policy") $rules_map = snort_load_vrt_policy($a_rule[$id]['ips_policy']); // Test for preproc_rules file and set the full path. elseif (file_exists("{$snortdir}/preproc_rules/{$currentruleset}")) $rules_map = snort_load_rules_map("{$snortdir}/preproc_rules/{$currentruleset}"); // Test for existence of regular text rules file and load it. elseif (file_exists($rulefile)) $rules_map = snort_load_rules_map($rulefile); else $input_errors[] = gettext("{$currentruleset} seems to be missing!!! Please verify rules files have been downloaded, then go to the Categories tab and save the rule set again."); } /* Load up our enablesid and disablesid arrays with enabled or disabled SIDs */ $enablesid = snort_load_sid_mods($a_rule[$id]['rule_sid_on']); $disablesid = snort_load_sid_mods($a_rule[$id]['rule_sid_off']); if ($_GET['act'] == "toggle" && $_GET['ids'] && !empty($rules_map)) { // Get the GID tag embedded in the clicked rule icon. $gid = $_GET['gid']; // Get the SID tag embedded in the clicked rule icon. $sid= $_GET['ids']; // See if the target SID is in our list of modified SIDs, // and toggle it back to default if present; otherwise, // add it to the appropriate modified SID list. if (isset($enablesid[$gid][$sid])) unset($enablesid[$gid][$sid]); elseif (isset($disablesid[$gid][$sid])) unset($disablesid[$gid][$sid]); else { if ($rules_map[$gid][$sid]['disabled'] == 1) $enablesid[$gid][$sid] = "enablesid"; else $disablesid[$gid][$sid] = "disablesid"; } // Write the updated enablesid and disablesid values to the config file. $tmp = ""; foreach (array_keys($enablesid) as $k1) { foreach (array_keys($enablesid[$k1]) as $k2) $tmp .= "{$k1}:{$k2}||"; } $tmp = rtrim($tmp, "||"); if (!empty($tmp)) $a_rule[$id]['rule_sid_on'] = $tmp; else unset($a_rule[$id]['rule_sid_on']); $tmp = ""; foreach (array_keys($disablesid) as $k1) { foreach (array_keys($disablesid[$k1]) as $k2) $tmp .= "{$k1}:{$k2}||"; } $tmp = rtrim($tmp, "||"); if (!empty($tmp)) $a_rule[$id]['rule_sid_off'] = $tmp; else unset($a_rule[$id]['rule_sid_off']); /* Update the config.xml file. */ write_config(); $_GET['openruleset'] = $currentruleset; $anchor = "rule_{$gid}_{$sid}"; } if ($_GET['act'] == "disable_all" && !empty($rules_map)) { // Mark all rules in the currently selected category "disabled". foreach (array_keys($rules_map) as $k1) { foreach (array_keys($rules_map[$k1]) as $k2) { if (isset($enablesid[$k1][$k2])) unset($enablesid[$k1][$k2]); $disablesid[$k1][$k2] = "disablesid"; } } // Write the updated enablesid and disablesid values to the config file. $tmp = ""; foreach (array_keys($enablesid) as $k1) { foreach (array_keys($enablesid[$k1]) as $k2) $tmp .= "{$k1}:{$k2}||"; } $tmp = rtrim($tmp, "||"); if (!empty($tmp)) $a_rule[$id]['rule_sid_on'] = $tmp; else unset($a_rule[$id]['rule_sid_on']); $tmp = ""; foreach (array_keys($disablesid) as $k1) { foreach (array_keys($disablesid[$k1]) as $k2) $tmp .= "{$k1}:{$k2}||"; } $tmp = rtrim($tmp, "||"); if (!empty($tmp)) $a_rule[$id]['rule_sid_off'] = $tmp; else unset($a_rule[$id]['rule_sid_off']); write_config(); $_GET['openruleset'] = $currentruleset; header("Location: /snort/snort_rules.php?id={$id}&openruleset={$currentruleset}"); exit; } if ($_GET['act'] == "enable_all" && !empty($rules_map)) { // Mark all rules in the currently selected category "enabled". foreach (array_keys($rules_map) as $k1) { foreach (array_keys($rules_map[$k1]) as $k2) { if (isset($disablesid[$k1][$k2])) unset($disablesid[$k1][$k2]); $enablesid[$k1][$k2] = "enablesid"; } } // Write the updated enablesid and disablesid values to the config file. $tmp = ""; foreach (array_keys($enablesid) as $k1) { foreach (array_keys($enablesid[$k1]) as $k2) $tmp .= "{$k1}:{$k2}||"; } $tmp = rtrim($tmp, "||"); if (!empty($tmp)) $a_rule[$id]['rule_sid_on'] = $tmp; else unset($a_rule[$id]['rule_sid_on']); $tmp = ""; foreach (array_keys($disablesid) as $k1) { foreach (array_keys($disablesid[$k1]) as $k2) $tmp .= "{$k1}:{$k2}||"; } $tmp = rtrim($tmp, "||"); if (!empty($tmp)) $a_rule[$id]['rule_sid_off'] = $tmp; else unset($a_rule[$id]['rule_sid_off']); write_config(); $_GET['openruleset'] = $currentruleset; header("Location: /snort/snort_rules.php?id={$id}&openruleset={$currentruleset}"); exit; } if ($_GET['act'] == "resetcategory" && !empty($rules_map)) { // Reset any modified SIDs in the current rule category to their defaults. foreach (array_keys($rules_map) as $k1) { foreach (array_keys($rules_map[$k1]) as $k2) { if (isset($enablesid[$k1][$k2])) unset($enablesid[$k1][$k2]); if (isset($disablesid[$k1][$k2])) unset($disablesid[$k1][$k2]); } } // Write the updated enablesid and disablesid values to the config file. $tmp = ""; foreach (array_keys($enablesid) as $k1) { foreach (array_keys($enablesid[$k1]) as $k2) $tmp .= "{$k1}:{$k2}||"; } $tmp = rtrim($tmp, "||"); if (!empty($tmp)) $a_rule[$id]['rule_sid_on'] = $tmp; else unset($a_rule[$id]['rule_sid_on']); $tmp = ""; foreach (array_keys($disablesid) as $k1) { foreach (array_keys($disablesid[$k1]) as $k2) $tmp .= "{$k1}:{$k2}||"; } $tmp = rtrim($tmp, "||"); if (!empty($tmp)) $a_rule[$id]['rule_sid_off'] = $tmp; else unset($a_rule[$id]['rule_sid_off']); write_config(); $_GET['openruleset'] = $currentruleset; header("Location: /snort/snort_rules.php?id={$id}&openruleset={$currentruleset}"); exit; } if ($_GET['act'] == "resetall" && !empty($rules_map)) { // Remove all modified SIDs from config.xml and save the changes. unset($a_rule[$id]['rule_sid_on']); unset($a_rule[$id]['rule_sid_off']); /* Update the config.xml file. */ write_config(); $_GET['openruleset'] = $currentruleset; header("Location: /snort/snort_rules.php?id={$id}&openruleset={$currentruleset}"); exit; } if ($_POST['clear']) { unset($a_rule[$id]['customrules']); write_config(); $rebuild_rules = true; snort_generate_conf($a_rule[$id]); $rebuild_rules = false; header("Location: /snort/snort_rules.php?id={$id}&openruleset={$currentruleset}"); exit; } if ($_POST['submit']) { if ($_POST['customrules']) $a_rule[$id]['customrules'] = base64_encode($_POST['customrules']); else unset($a_rule[$id]['customrules']); write_config(); $rebuild_rules = true; snort_generate_conf($a_rule[$id]); $rebuild_rules = false; $output = ""; $retcode = ""; exec("/usr/local/bin/snort -T -c {$snortdir}/snort_{$snort_uuid}_{$if_real}/snort.conf 2>&1", $output, $retcode); if (intval($retcode) != 0) { $error = ""; $start = count($output); $end = $start - 4; for($i = $start; $i > $end; $i--) $error .= $output[$i]; $input_errors[] = "Custom rules have errors:\n {$error}"; } else { header("Location: /snort/snort_rules.php?id={$id}&openruleset={$currentruleset}"); exit; } } else if ($_POST['apply']) { /* Save new configuration */ write_config(); /*************************************************/ /* Update the snort conf file and rebuild the */ /* rules for this interface. */ /*************************************************/ $rebuild_rules = true; snort_generate_conf($a_rule[$id]); $rebuild_rules = false; /* Soft-restart Snort to live-load new rules */ snort_reload_config($a_rule[$id]); /* Return to this same page */ header("Location: /snort/snort_rules.php?id={$id}&openruleset={$currentruleset}"); exit; } else if ($_POST['cancel']) { /* Return to this same page */ header("Location: /snort/snort_rules.php?id={$id}"); exit; } require_once("guiconfig.inc"); include_once("head.inc"); $if_friendly = snort_get_friendly_interface($pconfig['interface']); $pgtitle = gettext("Snort: Interface {$if_friendly} - Rules: {$currentruleset}"); ?> ' . $pgtitle . '

';} /* Display message */ if ($input_errors) { print_input_errors($input_errors); // TODO: add checks } if ($savemsg) { print_info_box($savemsg); } ?>
'; echo '
'; $menu_iface=($if_friendly?substr($if_friendly,0,5)." ":"Iface "); $tab_array = array(); $tab_array[] = array($menu_iface . gettext("Settings"), false, "/snort/snort_interfaces_edit.php?id={$id}"); $tab_array[] = array($menu_iface . gettext("Categories"), false, "/snort/snort_rulesets.php?id={$id}"); $tab_array[] = array($menu_iface . gettext("Rules"), true, "/snort/snort_rules.php?id={$id}"); $tab_array[] = array($menu_iface . gettext("Variables"), false, "/snort/snort_define_servers.php?id={$id}"); $tab_array[] = array($menu_iface . gettext("Preprocessors"), false, "/snort/snort_preprocessors.php?id={$id}"); $tab_array[] = array($menu_iface . gettext("Barnyard2"), false, "/snort/snort_barnyard.php?id={$id}"); display_top_tabs($tab_array); ?>
     
" title=" "/>   " title=""/>   " onclick="return confirm('')" title=""/>
" class="formbtn" title=""/>

" . gettext("Snort must be restarted to activate any rule enable/disable changes made on this tab."); ?>		 "?>   
"?>   
"?>   
"?>   
 
" . gettext("WARNING: ") . "" . gettext("You should not disable flowbit rules! Add Suppress List entries for them instead by ") . "" . gettext("clicking here") . ".";?>
$rulem) { foreach ($rulem as $k2 => $v) { $sid = $k2; $gid = $k1; if (isset($disablesid[$gid][$sid])) { $textss = ""; $textse = ""; $iconb = "icon_reject_d.gif"; $disable_cnt++; $title = gettext("Disabled by user. Click to toggle to default state"); } elseif (($v['disabled'] == 1) && (!isset($enablesid[$gid][$sid]))) { $textss = ""; $textse = ""; $iconb = "icon_block_d.gif"; $disable_cnt++; $title = gettext("Disabled by default. Click to toggle to enabled state"); } elseif (isset($enablesid[$gid][$sid])) { $textss = $textse = ""; $iconb = "icon_reject.gif"; $enable_cnt++; $title = gettext("Enabled by user. Click to toggle to default state"); } else { $textss = $textse = ""; $iconb = "icon_block.gif"; $enable_cnt++; $title = gettext("Enabled by default. Click to toggle to disabled state"); } // 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); // Create custom tags for the fields we truncate so we can // have a "title" attribute for tooltips to show the full string. $srcspan = add_title_attribute($textss, $rule_content[2]); $srcprtspan = add_title_attribute($textss, $rule_content[3]); $dstspan = add_title_attribute($textss, $rule_content[5]); $dstprtspan = add_title_attribute($textss, $rule_content[6]); $protocol = $rule_content[1]; //protocol field $source = truncate($rule_content[2], 14); //source field $source_port = truncate($rule_content[3], 10); //source port field $destination = truncate($rule_content[5], 14); //destination field $destination_port = truncate($rule_content[6], 10); //destination port field $message = snort_get_msg($v['rule']); echo ""; ?>
  title="" width="17" height="17" border="0">
$textss $textse {$textss}{$gid}{$textse} {$textss}{$sid}{$textse} {$textss}{$protocol}{$textse} {$srcspan}{$source} {$srcprtspan}{$source_port} {$dstspan}{$destination} {$dstprtspan}{$destination_port} {$textss}{$message}{$textse} " width="17" height="17" border="0">
$rulem) { foreach ($rulem as $k2 => $v) { $sid = snort_get_sid($v['rule']); $gid = snort_get_gid($v['rule']); if (isset($disablesid[$gid][$sid])) { $textss = ""; $textse = ""; $iconb = "icon_reject_d.gif"; $disable_cnt++; $title = gettext("Disabled by user. Click to toggle to default state"); } elseif (($v['disabled'] == 1) && (!isset($enablesid[$gid][$sid]))) { $textss = ""; $textse = ""; $iconb = "icon_block_d.gif"; $disable_cnt++; $title = gettext("Disabled by default. Click to toggle to enabled state"); } elseif (isset($enablesid[$gid][$sid])) { $textss = $textse = ""; $iconb = "icon_reject.gif"; $enable_cnt++; $title = gettext("Enabled by user. Click to toggle to default state"); } else { $textss = $textse = ""; $iconb = "icon_block.gif"; $enable_cnt++; $title = gettext("Enabled by default. Click to toggle to disabled state"); } $message = snort_get_msg($v['rule']); $matches = array(); if (preg_match('/(?:classtype\b\s*:)\s*(\S*\s*;)/iU', $v['rule'], $matches)) $classtype = trim($matches[1], " ;"); else $classtype = "No Classtype Defined"; $matches = array(); if (preg_match_all('/(\S*-ips)(?:\s*drop|alert)(?:,|\s*|;)/i', $v['rule'], $matches)) $policy = implode("
", $matches[1]); else $policy = "none"; echo ""; ?>
  title="" width="17" height="17" border="0">
$textss $textse {$textss}{$gid}{$textse} {$textss}{$sid}{$textse} {$textss}{$classtype} {$textss}{$policy} {$textss}{$message}{$textse} " width="17" height="17" border="0">

" . gettext("Total Rules: {$counter}") . "    " . gettext("Enabled: {$enable_cnt}") . "    " . gettext("Disabled: {$disable_cnt}"); ?>