diff options
Diffstat (limited to 'config/snort-dev/snort_blocked.php')
| -rw-r--r-- | config/snort-dev/snort_blocked.php | 351 |
1 files changed, 281 insertions, 70 deletions
diff --git a/config/snort-dev/snort_blocked.php b/config/snort-dev/snort_blocked.php index 4582c928..06d03bd0 100644 --- a/config/snort-dev/snort_blocked.php +++ b/config/snort-dev/snort_blocked.php @@ -3,9 +3,11 @@ /* snort_blocked.php Copyright (C) 2006 Scott Ullrich - Copyright (C) 2009 Robert Zelaya All rights reserved. + Modified for the Pfsense snort package v. 1.8+ + Copyright (C) 2009 Robert Zelaya Sr. Developer + Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: @@ -29,7 +31,16 @@ */ require("guiconfig.inc"); -require("/usr/local/pkg/snort/snort.inc"); + +$pconfig['brefresh'] = $config['installedpackages']['snortglobal']['alertsblocks']['brefresh']; +$pconfig['blertnumber'] = $config['installedpackages']['snortglobal']['alertsblocks']['blertnumber']; + +if ($pconfig['blertnumber'] == '' || $pconfig['blertnumber'] == '0') +{ + $bnentries = '500'; +}else{ + $bnentries = $pconfig['blertnumber']; +} if($_POST['todelete'] or $_GET['todelete']) { if($_POST['todelete']) @@ -47,9 +58,136 @@ header("Location: /snort/snort_blocked.php"); } +/* TODO: build a file with block ip and disc */ +if ($_POST['download']) +{ -$pgtitle = "Snort: Services: Snort Blocked Hosts"; -include("head.inc"); + ob_start(); //important or other posts will fail + $save_date = exec('/bin/date "+%Y-%m-%d-%H-%M-%S"'); + $file_name = "snort_blocked_{$save_date}.tar.gz"; + exec('/bin/mkdir /tmp/snort_blocked'); + exec('/sbin/pfctl -t snort2c -T show > /tmp/snort_block.pf'); + + $blocked_ips_array_save = str_replace(' ', '', array_filter(explode("\n", file_get_contents('/tmp/snort_block.pf')))); + + if ($blocked_ips_array_save[0] != '') + { + + /* build the list */ + $counter = 0; + foreach($blocked_ips_array_save as $fileline3) + { + + $counter++; + + exec("/bin/echo $fileline3 >> /tmp/snort_blocked/snort_block.pf"); + + } + } + + exec("/usr/bin/tar cfz /tmp/snort_blocked_{$save_date}.tar.gz /tmp/snort_blocked"); + + if(file_exists("/tmp/snort_blocked_{$save_date}.tar.gz")) + { + $file = "/tmp/snort_blocked_{$save_date}.tar.gz"; + header("Expires: Mon, 26 Jul 1997 05:00:00 GMT\n"); + header("Pragma: private"); // needed for IE + header("Cache-Control: private, must-revalidate"); // needed for IE + header('Content-type: application/force-download'); + header('Content-Transfer-Encoding: Binary'); + header("Content-length: ".filesize($file)); + header("Content-disposition: attachment; filename = {$file_name}"); + readfile("$file"); + exec("/bin/rm /tmp/snort_blocked_{$save_date}.tar.gz"); + exec("/bin/rm /tmp/snort_block.pf"); + exec("/bin/rm /tmp/snort_blocked/snort_block.pf"); + od_end_clean(); //importanr or other post will fail + }else{ + echo 'Error no saved file.'; + } + +} + +if ($_POST['save']) +{ + + /* input validation */ + if ($_POST['save']) + { + + + } + + /* no errors */ + if (!$input_errors) + { + + $config['installedpackages']['snortglobal']['alertsblocks']['brefresh'] = $_POST['brefresh'] ? on : off; + $config['installedpackages']['snortglobal']['alertsblocks']['blertnumber'] = $_POST['blertnumber']; + + conf_mount_rw(); + write_config(); + //conf_mount_ro(); + sleep(2); + + header("Location: /snort/snort_blocked.php"); + + } + +} + +/* build filter funcs */ +function get_snort_alert_ip_src($fileline) +{ + /* SRC IP */ + $re1='.*?'; # Non-greedy match on filler + $re2='((?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?))(?![\\d])'; # IPv4 IP Address 1 + + if ($c=preg_match_all ("/".$re1.$re2."/is", $fileline, $matches4)) + { + $alert_ip_src = $matches4[1][0]; + } + +return $alert_ip_src; + +} + +function get_snort_alert_disc($fileline) +{ + /* disc */ + if (preg_match("/\[\*\*\] (\[.*\]) (.*) (\[\*\*\])/", $fileline, $matches)) + { + $alert_disc = "$matches[2]"; + } + +return $alert_disc; + +} + +/* build sec filters */ +function get_snort_block_ip($fileline) +{ + /* ip */ + if (preg_match("/\[\d+\.\d+\.\d+\.\d+\]/", $fileline, $matches)) + { + $alert_block_ip = "$matches[0]"; + } + +return $alert_block_ip; + +} + +function get_snort_block_disc($fileline) +{ + /* disc */ + if (preg_match("/\]\s\[.+\]$/", $fileline, $matches)) + { + $alert_block_disc = "$matches[0]"; + } + +return $alert_block_disc; + +} /* tell the user what settings they have */ $blockedtab_msg_chk = $config['installedpackages']['snortglobal']['rm_blocked']; @@ -78,13 +216,32 @@ $blockedtab_msg_chk = $config['installedpackages']['snortglobal']['rm_blocked']; $blocked_msg = "28 days"; } +if ($blockedtab_msg_chk != "never_b") +{ +$blocked_msg_txt = "Hosts are removed every <strong>$blocked_msg</strong>."; +}else{ +$blocked_msg_txt = "Settings are set to never <strong>remove</strong> hosts."; +} + +$pgtitle = "Services: Snort Blocked Hosts"; +include("head.inc"); + ?> <body link="#000000" vlink="#000000" alink="#000000"> -<?php include("fbegin.inc"); ?> +<?php + +include("fbegin.inc"); + +/* refresh every 60 secs */ +if ($pconfig['brefresh'] == 'on' || $pconfig['brefresh'] == '') +{ + echo "<meta http-equiv=\"refresh\" content=\"60;url=/snort/snort_blocked.php\" />\n"; +} +?> + <p class="pgtitle"><?=$pgtitle?></p> -<form action="snort_blocked.php" method="post" name="iform" id="iform"> <script src="/row_toggle.js" type="text/javascript"></script> <script src="/javascript/sorttable.js" type="text/javascript"></script> <?php if ($savemsg) print_info_box($savemsg); ?> @@ -102,96 +259,150 @@ $blockedtab_msg_chk = $config['installedpackages']['snortglobal']['rm_blocked']; $tab_array[] = array("Help & Info", false, "/snort/snort_help_info.php"); display_top_tabs($tab_array); ?> - </td> + </td> </tr> <tr> <td> <div id="mainarea"> - <table id="maintable" class="tabcont" width="100%" border="0" cellpadding="0" cellspacing="0"> + + <table id="maintable" class="tabcont" width="100%" border="0" cellpadding="0" cellspacing="0"> + <tr> + <td width="22%" colspan="0" class="listtopic"> + Last <?=$bnentries;?> Blocked. + </td> + <td width="78%" class="listtopic"> + This page lists hosts that have been blocked by Snort. <?=$blocked_msg_txt;?> + </td> + </tr> + <tr> + <td width="22%" class="vncell">Save or Remove Hosts</td> + <td width="78%" class="vtable"> + <form action="/snort/snort_blocked.php" method="post"> + <input name="download" type="submit" class="formbtn" value="Download"> + All blocked hosts will be saved. + <input name="remove" type="submit" class="formbtn" value="Clear"> + <span class="red"><strong>Warning:</strong></span> all hosts will be removed. + </form> + </td> + </tr> + <tr> + <td width="22%" class="vncell">Auto Refresh and Log View</td> + <td width="78%" class="vtable"> + <form action="/snort/snort_blocked.php" method="post"> + <input name="save" type="submit" class="formbtn" value="Save"> + Refresh + <input name="brefresh" type="checkbox" value="on" <?php if ($config['installedpackages']['snortglobal']['alertsblocks']['brefresh']=="on" || $config['installedpackages']['snortglobal']['alertsblocks']['brefresh']=='') echo "checked"; ?>> + <strong>Default</strong> is <strong>ON</strong>. + <input name="blertnumber" type="text" class="formfld" id="blertnumber" size="5" value="<?=htmlspecialchars($bnentries);?>"> + Enter the number of blocked entries to view. <strong>Default</strong> is <strong>500</strong>. + </form> + </td> + </tr> + </table> + + </div> + </td> + </tr> + + <table class="tabcont" width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td> - <?php - if ($blockedtab_msg_chk != "never_b") - { - echo "<span class=\"red\"><strong>Note:</strong></span><br>This page lists hosts that have been blocked by Snort. Hosts are automatically deleted every <strong>$blocked_msg</strong>.<br><br>"; - }else{ - echo "<span class=\"red\"><strong>Note:</strong></span><br>This page lists hosts that have been blocked by Snort. Snort package settings are set to never <strong>remove</strong> hosts.<br><br>"; - } - ?> - <input name="remove" type="submit" class="formbtn" value="Remove"> all blocked hosts.<br><br> <table id="sortabletable1" class="sortable" width="100%" border="0" cellpadding="0" cellspacing="0"> <tr id="frheader"> <td width="5%" class="listhdrr">Remove</td> + <td class="listhdrr">#</td> <td class="listhdrr">IP</td> <td class="listhdrr">Alert Description</td> </tr> <?php - $associatealertip = $config['installedpackages']['snortglobal']['associatealertip']; - // $ips = `/sbin/pfctl -t snort2c -T show`; - /* this improves loading of ips by a factor of 10 */ - exec('/sbin/pfctl -t snort2c -T show > /tmp/snort_block.cache'); - sleep(1); - $ips_array = file('/tmp/snort_block.cache'); - //$ips_array = split("\n", $ips); +/* set the arrays */ +exec('/sbin/pfctl -t snort2c -T show > /tmp/snort_block.cache'); +$alerts_array = array_reverse(array_filter(explode("\n\n", file_get_contents('/var/log/snort/alert')))); +$blocked_ips_array = str_replace(' ', '', array_filter(explode("\n", file_get_contents('/tmp/snort_block.cache')))); + +$logent = $bnentries; + +if ($blocked_ips_array[0] != '') +{ + + /* build the list and compare blocks to alerts */ $counter = 0; - foreach($ips_array as $ip) { - if(!$ip) - continue; - $ww_ip = str_replace(" ", "", $ip); - $counter++; - if($associatealertip) - $alert_description = get_snort_alert($ww_ip); - else - $alert_description = ""; - echo "\n<tr>"; - echo "\n<td align=\"center\" valign=\"top\"'><a href='snort_blocked.php?todelete=" . trim(urlencode($ww_ip)) . "'>"; - echo "\n<img title=\"Delete\" border=\"0\" name='todelete' id='todelete' alt=\"Delete\" src=\"../themes/{$g['theme']}/images/icons/icon_x.gif\"></a></td>"; - echo "\n<td> {$ww_ip}</td>"; - echo "\n<td> {$alert_description}<!-- |{$ww_ip}| get_snort_alert($ww_ip); --></td>"; - echo "\n</tr>"; + foreach($alerts_array as $fileline) + { + + $counter++; + + $alert_ip_src = get_snort_alert_ip_src($fileline); + $alert_ip_disc = get_snort_alert_disc($fileline); + + if (in_array("$alert_ip_src", $blocked_ips_array)) + $input[] = "[$alert_ip_src] " . "[$alert_ip_disc]\n"; + } - echo "\n<tr><td colspan='3'> </td></tr>"; - if($counter < 1) - echo "\n<tr><td colspan='3' align=\"center\" valign=\"top\">There are currently no items being blocked by snort.</td></tr>"; - else - echo "\n<tr><td colspan='3' align=\"center\" valign=\"top\">{$counter} items listed.</td></tr>"; -?> + /* reduce double occurrences */ + $result = array_unique($input); - </table> - </td> - </tr> - </table> - </div> - </td> - </tr> -</table> + /* buil final list, preg_match, buld html */ + $counter2 = 0; -</form> + foreach($result as $fileline2) + { + if($logent <= $counter2) + continue; -<p> + $counter2++; -<?php + $alert_block_ip_str = get_snort_block_ip($fileline2); -if ($blockedtab_msg_chk != "never_b") + if($alert_block_ip_str != '') + { + $alert_block_ip_match = array('[',']'); + $alert_block_ip = str_replace($alert_block_ip_match, '', "$alert_block_ip_str"); + }else{ + $alert_block_ip = 'empty'; + } + + $alert_block_disc_str = get_snort_block_disc($fileline2); + + if($alert_block_disc_str != '') + { + $alert_block_disc_match = array('] [',']'); + $alert_block_disc = str_replace($alert_block_disc_match, '', "$alert_block_disc_str"); + }else{ + $alert_block_disc = 'empty'; + } + + + /* use one echo to do the magic*/ + echo "<tr> + <td align=\"center\" valign=\"top\"'><a href='snort_blocked.php?todelete=" . trim(urlencode($alert_block_ip)) . "'> + <img title=\"Delete\" border=\"0\" name='todelete' id='todelete' alt=\"Delete\" src=\"../themes/{$g['theme']}/images/icons/icon_x.gif\"></a></td> + <td> {$counter2}</td> + <td> {$alert_block_ip}</td> + <td> {$alert_block_disc}</td> + </tr>\n"; + + } +} + +if ($blocked_ips_array[0] == '') { -echo "This page lists hosts that have been blocked by Snort. Hosts are automatically deleted every <strong>$blocked_msg</strong>."; + echo "\n<tr><td colspan='3' align=\"center\" valign=\"top\"><br><strong>There are currently no items being blocked by snort.</strong></td></tr>"; }else{ -echo "This page lists hosts that have been blocked by Snort. Snort package settings are set to never <strong>remove</strong> hosts."; + echo "\n<tr><td colspan='3' align=\"center\" valign=\"top\">{$counter} items listed.</td></tr>"; } ?> - + </table> + </td> + </tr> + </table> + </div> + </td> + </tr> +</table> <?php include("fend.inc"); ?> - </body> -</html> - -<?php - -/* write out snort cache */ -conf_mount_rw(); -write_snort_config_cache($snort_config); -conf_mount_ro(); -?>
\ No newline at end of file +</html>
\ No newline at end of file |