diff options
Diffstat (limited to 'config/snort-dev/snort_blocked.php')
| -rw-r--r-- | config/snort-dev/snort_blocked.php | 426 |
1 files changed, 426 insertions, 0 deletions
diff --git a/config/snort-dev/snort_blocked.php b/config/snort-dev/snort_blocked.php new file mode 100644 index 00000000..932e0983 --- /dev/null +++ b/config/snort-dev/snort_blocked.php @@ -0,0 +1,426 @@ +<?php +/* $Id$ */ +/* + snort_blocked.php + Copyright (C) 2006 Scott Ullrich + 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: + + 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_gui.inc"); +require_once("/usr/local/pkg/snort/snort.inc"); + +if (!is_array($config['installedpackages']['snortglobal']['alertsblocks'])) + $config['installedpackages']['snortglobal']['alertsblocks'] = array(); + +$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']) + $ip = $_POST['todelete']; + if($_GET['todelete']) + $ip = $_GET['todelete']; + exec("/sbin/pfctl -t snort2c -T delete {$ip}"); +} + +if ($_POST['remove']) { + exec("/sbin/pfctl -t snort2c -T flush"); + sleep(1); + header("Location: /snort/snort_blocked.php"); + exit; + +} + +/* TODO: build a file with block ip and disc */ +if ($_POST['download']) +{ + + 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 */ + file_put_contents("/tmp/snort_blocked/snort_block.pf", ""); + foreach($blocked_ips_array_save as $counter => $fileline3) + file_put_contents("/tmp/snort_blocked/snort_block.pf", "{$fileline3}\n", FILE_APPEND); + } + + 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'] = $_POST['blertnumber']; + + write_config(); + + header("Location: /snort/snort_blocked.php"); + + } + +} + +/* build filter funcs */ +function get_snort_alert_ip_src($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 = $config['installedpackages']['snortglobal']['rm_blocked']; +if ($blockedtab_msg_chk == "1h_b") { + $blocked_msg = "hour"; +} +if ($blockedtab_msg_chk == "3h_b") { + $blocked_msg = "3 hours"; +} +if ($blockedtab_msg_chk == "6h_b") { + $blocked_msg = "6 hours"; +} +if ($blockedtab_msg_chk == "12h_b") { + $blocked_msg = "12 hours"; +} +if ($blockedtab_msg_chk == "1d_b") { + $blocked_msg = "day"; +} +if ($blockedtab_msg_chk == "4d_b") { + $blocked_msg = "4 days"; +} +if ($blockedtab_msg_chk == "7d_b") { + $blocked_msg = "7 days"; +} +if ($blockedtab_msg_chk == "28d_b") { + $blocked_msg = "28 days"; +} + +if ($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_once("head.inc"); + +?> + +<body link="#000000" vlink="#000000" alink="#000000"> + +<?php + +include_once("fbegin.inc"); +echo $snort_general_css; + +/* refresh every 60 secs */ +if ($pconfig['brefresh'] == 'on') + echo "<meta http-equiv=\"refresh\" content=\"60;url=/snort/snort_blocked.php\" />\n"; +?> + +<div class="body2"><?if($pfsense_stable == 'yes'){echo '<p class="pgtitle">' . $pgtitle . '</p>';}?> + +<?php if ($savemsg) print_info_box($savemsg); ?> +<table width="99%" border="0" cellpadding="0" cellspacing="0"> +<tr><td> +<?php + $tab_array = array(); + $tab_array[0] = array(gettext("Snort Interfaces"), false, "/snort/snort_interfaces.php"); + $tab_array[1] = array(gettext("Global Settings"), false, "/snort/snort_interfaces_global.php"); + $tab_array[2] = array(gettext("Updates"), false, "/snort/snort_download_updates.php"); + $tab_array[3] = array(gettext("Alerts"), false, "/snort/snort_alerts.php"); + $tab_array[4] = array(gettext("Blocked"), true, "/snort/snort_blocked.php"); + $tab_array[5] = array(gettext("Whitelists"), false, "/snort/snort_interfaces_whitelist.php"); + $tab_array[6] = array(gettext("Suppress"), false, "/snort/snort_interfaces_suppress.php"); + $tab_array[7] = array(gettext("Help"), false, "/snort/help_and_info.php"); + display_top_tabs($tab_array); +?> +</td></tr> + <tr> + <td> + <div id="mainarea2"> + + <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> + <br> + </td> + </tr> + + <table class="tabcont" width="100%" border="0" cellspacing="0" + cellpadding="0"> + <tr> + <td> + <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 + + /* set the arrays */ + exec('/sbin/pfctl -t snort2c -T show > /tmp/snort_block.cache'); + $blocked_ips_array = str_replace(' ', '', array_filter(explode("\n", file_get_contents('/tmp/snort_block.cache')))); + foreach (glob("/var/log/snort/alert_*") as $alert) { + $alerts_array = array_reverse(explode("\n\n", file_get_contents("{$alert}"))); + + $logent = $bnentries; + + if ($blocked_ips_array[0] != '' && $alerts_array[0] != '') + { + + /* build the list and compare blocks to alerts */ + $counter = 0; + foreach($alerts_array as $fileline) + { + + $counter++; + + $alert_ip_src = get_snort_alert_ip_src($fileline); + $alert_ip_disc = get_snort_alert_disc($fileline); + $alert_ip_src_array[] = get_snort_alert_ip_src($fileline); + + if (in_array("$alert_ip_src", $blocked_ips_array)) + $input[] = "[$alert_ip_src] " . "[$alert_ip_disc]\n"; + } + + foreach($blocked_ips_array as $alert_block_ip) + { + + if (!in_array($alert_block_ip, $alert_ip_src_array)) + { + $input[] = "[$alert_block_ip] " . "[N\A]\n"; + } + } + + /* reduce double occurrences */ + $result = array_unique($input); + + /* buil final list, preg_match, buld html */ + $counter2 = 0; + + foreach($result as $fileline2) + { + if($logent <= $counter2) + continue; + + $counter2++; + + $alert_block_ip_str = get_snort_block_ip($fileline2); + + 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"; + + } + + }else{ + + /* if alerts file is empty and blocked table is not empty */ + $counter2 = 0; + + foreach($blocked_ips_array as $alert_block_ip) + { + if($logent <= $counter2) + continue; + + $counter2++; + + $alert_block_disc = 'N/A'; + + /* use one echo to do the magic*/ + echo "<tr> + <td align=\"center\" valign=\"top\"'><a href='snort_blocked.php?todelete=" . trim(urlencode($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"; + } + } + } + + echo '</table>' . "\n"; + + if (empty($blocked_ips_array[0])) + echo "\n<tr><td colspan='3' align=\"center\" valign=\"top\"><br><strong>There are currently no items being blocked by snort.</strong></td></tr>"; + else + echo "\n<tr><td colspan='3' align=\"center\" valign=\"top\">{$counter2} items listed.</td></tr>"; + + ?> + </td> + </tr> + </table> + </td> + </tr> + </table> + </div> + + <?php + + include("fend.inc"); + +echo $snort_custom_rnd_box; + +?> + +</body> +</html> |