/usr/local/www/diag_packet_capture.php
PHP | 293 lines | 222 code | 29 blank | 42 comment | 60 complexity | e3071ca093efc125415d21f2434bc609 MD5 | raw file
- <?php
- /*
- 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.
- */
- /*
- pfSense_BUILDER_BINARIES: /bin/ps /usr/bin/grep /usr/sbin/tcpdump
- pfSense_MODULE: routing
- */
- ##|+PRIV
- ##|*IDENT=page-diagnostics-packetcapture
- ##|*NAME=Diagnostics: Packet Capture page
- ##|*DESCR=Allow access to the 'Diagnostics: Packet Capture' page.
- ##|*MATCH=diag_packet_capture.php*
- ##|-PRIV
- if ($_POST['downloadbtn'] == gettext("Download Capture"))
- $nocsrf = true;
- $pgtitle = array(gettext("Diagnostics"), gettext("Packet Capture"));
- require_once("guiconfig.inc");
- require_once("pfsense-utils.inc");
- $fp = "/root/";
- $fn = "packetcapture.cap";
- $snaplen = 0;//default packet length
- $count = 100;//default number of packets to capture
- if ($_POST) {
- $do_tcpdump = true;
- $host = $_POST['host'];
- $selectedif = $_POST['interface'];
- $count = $_POST['count'];
- $packetlength = $_POST['snaplen'];
- $port = $_POST['port'];
- $detail = $_POST['detail'];
- $fam = $_POST['fam'];
- conf_mount_rw();
- if ($_POST['dnsquery']) {
- //if dns lookup is checked
- $disabledns = "";
- } else {
- //if dns lookup is unchecked
- $disabledns = "-n";
- }
- if ($_POST['startbtn'] != "" ) {
- $action = gettext("Start");
- //delete previous packet capture if it exists
- if (file_exists($fp.$fn))
- unlink ($fp.$fn);
- } elseif ($_POST['stopbtn']!= "") {
- $action = gettext("Stop");
- $processes_running = trim(shell_exec("/bin/ps axw -O pid= | /usr/bin/grep tcpdump | /usr/bin/grep {$fn} | /usr/bin/egrep -v '(pflog|grep)'"));
- //explode processes into an array, (delimiter is new line)
- $processes_running_array = explode("\n", $processes_running);
- //kill each of the packetcapture processes
- foreach ($processes_running_array as $process) {
- $process_id_pos = strpos($process, ' ');
- $process_id = substr($process, 0, $process_id_pos);
- exec("kill $process_id");
- }
- } else {
- //download file
- $fs = filesize($fp.$fn);
- header("Content-Type: application/octet-stream");
- header("Content-Disposition: attachment; filename=$fn");
- header("Content-Length: $fs");
- readfile($fp.$fn);
- exit;
- }
- } else {
- $do_tcpdump = false;
- }
- include("head.inc"); ?>
- <body link="#000000" vlink="#0000CC" alink="#0000CC">
- <?php
- include("fbegin.inc");
- ?>
- <table width="100%" border="0" cellpadding="0" cellspacing="0">
- <tr><td>
- <form action="diag_packet_capture.php" method="post" name="iform" id="iform">
- <table width="100%" border="0" cellpadding="6" cellspacing="0">
- <tr>
- <td colspan="2" valign="top" class="listtopic"><?=gettext("Packet capture");?></td>
- </tr>
- <tr>
- <td width="17%" valign="top" class="vncellreq"><?=gettext("Interface");?></td>
- <td width="83%" class="vtable">
- <select name="interface">
- <?php
- $interfaces = get_configured_interface_with_descr();
- if (isset($config['ipsec']['enable']))
- $interfaces['ipsec'] = "IPsec";
- foreach (array('server', 'client') as $mode) {
- if (is_array($config['openvpn']["openvpn-{$mode}"])) {
- foreach ($config['openvpn']["openvpn-{$mode}"] as $id => $setting) {
- if (!isset($setting['disable'])) {
- $interfaces['ovpn' . substr($mode, 0, 1) . $setting['vpnid']] = gettext("OpenVPN") . " ".$mode.": ".htmlspecialchars($setting['description']);
- }
- }
- }
- }
- foreach ($interfaces as $iface => $ifacename): ?>
- <option value="<?=$iface;?>" <?php if ($selectedif == $iface) echo "selected"; ?>>
- <?php echo $ifacename;?>
- </option>
- <?php endforeach;?>
- </select>
- <br/><?=gettext("Select the interface on which to capture traffic.");?>
- </td>
- </tr>
- <tr>
- <td width="17%" valign="top" class="vncellreq"><?=gettext("Address Family");?></td>
- <td width="83%" class="vtable">
- <select name="fam">
- <option value="">Any</option>
- <option value="ip" <?php if ($fam == "ip") echo "selected"; ?>>IPv4 Only</option>
- <option value="ip6" <?php if ($fam == "ip6") echo "selected"; ?>>IPv6 Only</option>
- </select>
- <br/><?=gettext("Select the type of traffic to be captured, either Any, IPv4 only or IPv6 only.");?>
- </td>
- </tr>
- <tr>
- <td width="17%" valign="top" class="vncellreq"><?=gettext("Host Address");?></td>
- <td width="83%" class="vtable">
- <input name="host" type="text" class="formfld host" id="host" size="20" value="<?=htmlspecialchars($host);?>">
- <br/><?=gettext("This value is either the Source or Destination IP address or subnet in CIDR notation. The packet capture will look for this address in either field.");?>
- <br/><?=gettext("This value can be a domain name or IP address, or subnet in CIDR notation.");?>
- <br/><?=gettext("If you leave this field blank, all packets on the specified interface will be captured.");?>
- </td>
- </tr>
- <tr>
- <td width="17%" valign="top" class="vncellreq"><?=gettext("Port");?></td>
- <td width="83%" class="vtable">
- <input name="port" type="text" class="formfld unknown" id="port" size="5" value="<?=$port;?>">
- <br/><?=gettext("The port can be either the source or destination port. The packet capture will look for this port in either field.");?>
- <br/><?=gettext("Leave blank if you do not want to filter by port.");?>
- </td>
- </tr>
- <tr>
- <td width="17%" valign="top" class="vncellreq"><?=gettext("Packet Length");?></td>
- <td width="83%" class="vtable">
- <input name="snaplen" type="text" class="formfld unknown" id="snaplen" size="5" value="<?=$snaplen;?>">
- <br/><?=gettext("The Packet length is the number of bytes of each packet that will be captured. Default value is 0, which will capture the entire frame regardless of its size.");?>
- </td>
- </tr>
- <tr>
- <td width="17%" valign="top" class="vncellreq"><?=gettext("Count");?></td>
- <td width="83%" class="vtable">
- <input name="count" type="text" class="formfld unknown" id="count" size="5" value="<?=$count;?>">
- <br/><?=gettext("This is the number of packets the packet capture will grab. Default value is 100.") . "<br/>" . gettext("Enter 0 (zero) for no count limit.");?>
- </tr>
- <tr>
- <td width="17%" valign="top" class="vncellreq"><?=gettext("Level of Detail");?></td>
- <td width="83%" class="vtable">
- <select name="detail" type="text" class="formselect" id="detail" size="1">
- <option value="-q" <?php if ($detail == "-q") echo "selected"; ?>><?=gettext("Normal");?></option>
- <option value="-v" <?php if ($detail == "-v") echo "selected"; ?>><?=gettext("Medium");?></option>
- <option value="-vv" <?php if ($detail == "-vv") echo "selected"; ?>><?=gettext("High");?></option>
- <option value="-vv -e" <?php if ($detail == "-vv -e") echo "selected"; ?>><?=gettext("Full");?></option>
- </select>
- <br/><?=gettext("This is the level of detail that will be displayed after hitting 'Stop' when the packets have been captured.") . "<br/><b>" .
- gettext("Note:") . "</b> " .
- gettext("This option does not affect the level of detail when downloading the packet capture.");?>
- </tr>
- <tr>
- <td width="17%" valign="top" class="vncellreq"><?=gettext("Reverse DNS Lookup");?></td>
- <td width="83%" class="vtable">
- <input name="dnsquery" type="checkbox"<?php if($_POST['dnsquery']) echo " CHECKED"; ?>>
- <br/><?=gettext("This check box will cause the packet capture to perform a reverse DNS lookup associated with all IP addresses.");?>
- <br/><b><?=gettext("Note");?>: </b><?=gettext("This option can cause delays for large packet captures.");?>
- </td>
- </tr>
- <tr>
- <td width="17%" valign="top"> </td>
- <td width="83%">
- <?php
- /* check to see if packet capture tcpdump is already running */
- $processcheck = (trim(shell_exec("/bin/ps axw -O pid= | /usr/bin/grep tcpdump | /usr/bin/grep {$fn} | /usr/bin/egrep -v '(pflog|grep)'")));
- if ($processcheck != "")
- $processisrunning = true;
- else
- $processisrunning = false;
- if (($action == gettext("Stop") or $action == "") and $processisrunning != true)
- echo "<input type=\"submit\" name=\"startbtn\" value=\"" . gettext("Start") . "\"> ";
- else {
- echo "<input type=\"submit\" name=\"stopbtn\" value=\"" . gettext("Stop") . "\"> ";
- }
- if (file_exists($fp.$fn) and $processisrunning != true) {
- echo "<input type=\"submit\" name=\"downloadbtn\" value=\"" . gettext("Download Capture") . "\">";
- echo " (" . gettext("The packet capture file was last updated:") . " " . date("F jS, Y g:i:s a.", filemtime($fp.$fn)) . ")";
- }
- ?>
- </td>
- </tr>
- </table>
- </form>
- <table width="100%" border="0" cellpadding="6" cellspacing="0">
- <tr>
- <td valign="top" colspan="2">
- <?php
- echo "<font face='terminal' size='2'>";
- if ($processisrunning == true)
- echo("<strong>" . gettext("Packet Capture is running.") . "</strong><br/>");
- if ($do_tcpdump) {
- $matches = array();
- if (($fam == "ip6") || ($fam == "ip"))
- $matches[] = $fam;
- if ($port != "")
- $matches[] = "port ".$port;
- if ($host != "") {
- if (is_ipaddr($host))
- $matches[] = "host " . $host;
- elseif (is_subnet($host))
- $matches[] = "net " . $host;
- }
- if ($count != "0" ) {
- $searchcount = "-c " . $count;
- } else {
- $searchcount = "";
- }
- $selectedif = convert_friendly_interface_to_real_interface_name($selectedif);
- if ($action == gettext("Start")) {
- $matchstr = implode($matches, " and ");
- echo("<strong>" . gettext("Packet Capture is running.") . "</strong><br/>");
- mwexec_bg ("/usr/sbin/tcpdump -i $selectedif $searchcount -s $packetlength -w $fp$fn $matchstr");
- // echo "/usr/sbin/tcpdump -i $selectedif $searchcount -s $packetlength -w $fp$fn $matchstr";
- } else {
- //action = stop
- echo("<strong>" . gettext("Packet Capture stopped.") . "<br/><br/>" . gettext("Packets Captured:") . "</strong><br/>");
- ?>
- <textarea style="width:98%" name="code" rows="15" cols="66" wrap="off" readonly="readonly">
- <?php
- system ("/usr/sbin/tcpdump $disabledns $detail -r $fp$fn");
- conf_mount_ro();
- ?>
- </textarea>
- <?php
- }
- }
- ?>
- </td>
- </tr>
- </table>
- </td></tr>
- </table>
- <?php
- include("fend.inc");
- ?>