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Diffstat (limited to 'config/snort/snort_import_aliases.php')
| -rw-r--r-- | config/snort/snort_import_aliases.php | 327 |
1 files changed, 327 insertions, 0 deletions
diff --git a/config/snort/snort_import_aliases.php b/config/snort/snort_import_aliases.php new file mode 100644 index 00000000..d9f751cd --- /dev/null +++ b/config/snort/snort_import_aliases.php @@ -0,0 +1,327 @@ +<?php +/* $Id$ */ +/* + snort_import_aliases.php + Copyright (C) 2004 Scott Ullrich + All rights reserved. + + originially part of m0n0wall (http://m0n0.ch/wall) + Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>. + 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("guiconfig.inc"); +require_once("functions.inc"); +require_once("/usr/local/pkg/snort/snort.inc"); + +// Retrieve any passed QUERY STRING or POST variables +$id = $_GET['id']; +$eng = $_GET['eng']; +if (isset($_POST['id'])) + $id = $_POST['id']; +if (isset($_POST['eng'])) + $eng = $_POST['eng']; + +// Make sure we have a valid rule ID and ENGINE name, or +// else bail out to top-level menu. +if (is_null($id) || is_null($eng)) { + header("Location: /snort/snort_interfaces.php"); + exit; +} + +// Used to track if any selectable Aliases are found +$selectablealias = false; + +// Initialize required array variables as necessary +if (!is_array($config['aliases']['alias'])) + $config['aliases']['alias'] = array(); +$a_aliases = $config['aliases']['alias']; +if (!is_array($config['installedpackages']['snortglobal']['rule'])) + $config['installedpackages']['snortglobal']['rule'] = array(); + +// The $eng variable points to the specific Snort config section +// engine we are importing values into. Initialize the config.xml +// array if necessary. +if (!is_array($config['installedpackages']['snortglobal']['rule'][$id][$eng]['item'])) + $config['installedpackages']['snortglobal']['rule'][$id][$eng]['item'] = array(); + +// Initialize a pointer to the Snort config section engine we are +// importing values into. +$a_nat = &$config['installedpackages']['snortglobal']['rule'][$id][$eng]['item']; + +// Build a lookup array of currently used engine 'bind_to' Aliases +// so we can screen matching Alias names from the list. +$used = array(); +foreach ($a_nat as $v) + $used[$v['bind_to']] = true; + +// Construct the correct return anchor string based on the Snort config section +// engine we were called with. This lets us return to the page and section +// we were called from. Also set the flag for those engines which accept +// multiple IP addresses for the "bind_to" parameter. +switch ($eng) { + case "frag3_engine": + $anchor = "#frag3_row"; + $multi_ip = true; + $title = "Frag3 Engine"; + break; + case "http_inspect_engine": + $anchor = "#httpinspect_row"; + $multi_ip = true; + $title = "HTTP_Inspect Engine"; + break; + case "stream5_tcp_engine": + $anchor = "#stream5_row"; + $multi_ip = true; + $title = "Stream5 TCP Engine"; + break; + case "ftp_server_engine": + $anchor = "#ftp_telnet_row"; + $multi_ip = false; + $title = "FTP Server Engine"; + break; + case "ftp_client_engine": + $anchor = "#ftp_telnet_row"; + $multi_ip = false; + $title = "FTP Client Engine"; + break; + default: + $anchor = ""; +} + +if ($_POST['cancel']) { + header("Location: /snort/snort_preprocessors.php?id={$id}{$anchor}"); + exit; +} + +if ($_POST['save']) { + + // Define default engine configurations for each of the supported engines. + + $def_frag3 = array( "name" => "", "bind_to" => "", "policy" => "bsd", + "timeout" => 60, "min_ttl" => 1, "detect_anomalies" => "on", + "overlap_limit" => 0, "min_frag_len" => 0 ); + + $def_ftp_server = array( "name" => "", "bind_to" => "", "ports" => "default", + "telnet_cmds" => "no", "ignore_telnet_erase_cmds" => "yes", + "ignore_data_chan" => "no", "def_max_param_len" => 100 ); + + $def_ftp_client = array( "name" => "", "bind_to" => "", "max_resp_len" => 256, + "telnet_cmds" => "no", "ignore_telnet_erase_cmds" => "yes", + "bounce" => "yes", "bounce_to_net" => "", "bounce_to_port" => "" ); + + $def_http_inspect = array( "name" => "", "bind_to" => "", "server_profile" => "all", "enable_xff" => "off", + "log_uri" => "off", "log_hostname" => "off", "server_flow_depth" => 65535, "enable_cookie" => "on", + "client_flow_depth" => 1460, "extended_response_inspection" => "on", "no_alerts" => "off", + "unlimited_decompress" => "on", "inspect_gzip" => "on", "normalize_cookies" =>"on", "normalize_headers" => "on", + "normalize_utf" => "on", "normalize_javascript" => "on", "allow_proxy_use" => "off", "inspect_uri_only" => "off", + "max_javascript_whitespaces" => 200, "post_depth" => -1, "max_headers" => 0, "max_spaces" => 0, + "max_header_length" => 0, "ports" => "default" ); + + $def_stream5 = array( "name" => "", "bind_to" => "", "policy" => "bsd", "timeout" => 30, + "max_queued_bytes" => 1048576, "detect_anomalies" => "off", "overlap_limit" => 0, + "max_queued_segs" => 2621, "require_3whs" => "off", "startup_3whs_timeout" => 0, + "no_reassemble_async" => "off", "dont_store_lg_pkts" => "off", "max_window" => 0, + "use_static_footprint_sizes" => "off", "check_session_hijacking" => "off", "ports_client" => "default", + "ports_both" => "default", "ports_server" => "none" ); + + // Figure out which engine type we are importing and set up default engine array + $engine = array(); + switch ($eng) { + case "frag3_engine": + $engine = $def_frag3; + break; + case "http_inspect_engine": + $engine = $def_http_inspect; + break; + case "stream5_tcp_engine": + $engine = $def_stream5; + break; + case "ftp_server_engine": + $engine = $def_ftp_server; + break; + case "ftp_client_engine": + $engine = $def_ftp_client; + break; + default: + $engine = ""; + $input_errors[] = gettext("Invalid ENGINE TYPE passed in query string. Aborting operation."); + } + + // See if anything was checked to import + if (is_array($_POST['toimport']) && count($_POST['toimport']) > 0) { + foreach ($_POST['toimport'] as $item) { + $engine['name'] = strtolower($item); + $engine['bind_to'] = $item; + $a_nat[] = $engine; + } + } + else + $input_errors[] = gettext("No entries were selected for import. Please select one or more Aliases for import and click SAVE."); + + // if no errors, write new entry to conf + if (!$input_errors) { + // Reorder the engine array to ensure the + // 'bind_to=all' entry is at the bottom if + // the array contains more than one entry. + if (count($a_nat) > 1) { + $i = -1; + foreach ($a_nat as $f => $v) { + if ($v['bind_to'] == "all") { + $i = $f; + break; + } + } + // Only relocate the entry if we + // found it, and it's not already + // at the end. + if ($i > -1 && ($i < (count($a_nat) - 1))) { + $tmp = $a_nat[$i]; + unset($a_nat[$i]); + $a_nat[] = $tmp; + } + } + + // Now write the new engine array to conf and return + write_config(); + + header("Location: /snort/snort_preprocessors.php?id={$id}{$anchor}"); + exit; + } +} + +$pgtitle = gettext("Snort: Import Host/Network Alias for {$title}"); +include("head.inc"); + +?> + +<body link="#0000CC" vlink="#0000CC" alink="#0000CC"> +<?php include("fbegin.inc"); ?> +<form action="snort_import_aliases.php" method="post"> +<input type="hidden" name="id" value="<?=$id;?>"> +<input type="hidden" name="eng" value="<?=$eng;?>"> +<?php if ($input_errors) print_input_errors($input_errors); ?> +<div id="boxarea"> +<table width="100%" border="0" cellpadding="0" cellspacing="0"> +<tr> + <td class="tabcont"><strong><?=gettext("Select one or more Aliases to use as {$title} targets from the list below.");?></strong><br/> + </td> +</tr> +<tr> + <td class="tabcont"> + <table id="sortabletable1" style="table-layout: fixed;" class="sortable" width="100%" border="0" cellpadding="0" cellspacing="0"> + <colgroup> + <col width="5%" align="center"> + <col width="25%" align="left" axis="string"> + <col width="35%" align="left" axis="string"> + <col width="35%" align="left" axis="string"> + </colgroup> + <thead> + <tr> + <th class="listhdrr"></th> + <th class="listhdrr" axis="string"><?=gettext("Alias Name"); ?></th> + <th class="listhdrr" axis="string"><?=gettext("Values"); ?></th> + <th class="listhdrr" axis="string"><?=gettext("Description"); ?></th> + </tr> + </thead> + <tbody> + <?php $i = 0; foreach ($a_aliases as $alias): ?> + <?php if ($alias['type'] <> "host" && $alias['type'] <> "network") + continue; + if (isset($used[$alias['name']])) + continue; + if (!$multi_ip && !snort_is_single_addr_alias($alias['name'])) { + $textss = "<span class=\"gray\">"; + $textse = "</span>"; + $disable = true; + $tooltip = gettext("Aliases resolving to multiple addresses cannot be used with the '{$eng}'."); + } + elseif (trim(filter_expand_alias($alias['name'])) == "") { + $textss = "<span class=\"gray\">"; + $textse = "</span>"; + $disable = true; + $tooltip = gettext("Aliases representing a FQDN host cannot be used in Snort preprocessor configurations."); + } + else { + $textss = ""; + $textse = ""; + $disable = ""; + $selectablealias = true; + $tooltip = gettext("Selected entries will be imported. Click to toggle selection of this entry."); + } + ?> + <?php if ($disable): ?> + <tr title="<?=$tooltip;?>"> + <td class="listlr" align="center"><img src="../themes/<?=$g['theme'];?>/images/icons/icon_block_d.gif" width="11" height"11" border="0"/> + <?php else: ?> + <tr> + <td class="listlr" align="center"><input type="checkbox" name="toimport[]" value="<?=htmlspecialchars($alias['name']);?>" title="<?=$tooltip;?>"/></td> + <?php endif; ?> + <td class="listr" align="left"><?=$textss . htmlspecialchars($alias['name']) . $textse;?></td> + <td class="listr" align="left"> + <?php + $tmpaddr = explode(" ", $alias['address']); + $addresses = implode(", ", array_slice($tmpaddr, 0, 10)); + echo "{$textss}{$addresses}{$textse}"; + if(count($tmpaddr) > 10) { + echo "..."; + } + ?> + </td> + <td class="listbg" align="left"> + <?=$textss . htmlspecialchars($alias['descr']) . $textse;?> + </td> + </tr> + <?php $i++; endforeach; ?> + </table> + </td> +</tr> +<?php if (!$selectablealias): ?> +<tr> + <td class="tabcont" align="center"><b><?php echo gettext("There are currently no defined Aliases eligible for import.");?></b></td> +</tr> +<tr> + <td class="tabcont" align="center"> + <input type="Submit" name="cancel" value="Cancel" id="cancel" class="formbtn" title="<?=gettext("Cancel import operation and return");?>"/> + </td> +</tr> +<?php else: ?> +<tr> + <td class="tabcont" align="center"> + <input type="Submit" name="save" value="Save" id="save" class="formbtn" title="<?=gettext("Import selected item and return");?>"/> + <input type="Submit" name="cancel" value="Cancel" id="cancel" class="formbtn" title="<?=gettext("Cancel import operation and return");?>"/> + </td> +</tr> +<?php endif; ?> +<tr> + <td class="tabcont"> + <span class="vexpl"><span class="red"><strong><?=gettext("Note:"); ?><br></strong></span><?=gettext("Fully-Qualified Domain Name (FQDN) host Aliases cannot be used as Snort configuration parameters. Aliases resolving to a single FQDN value are disabled in the list above. In the case of nested Aliases where one or more of the nested values is a FQDN host, the FQDN host will not be included in the {$title} configuration.");?></span> + </td> +</tr> +</table> +</div> +</form> +<?php include("fend.inc"); ?> +</body> +</html> |