pfSense

<?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_MODULE:	routing

*/

##|*IDENT=page-diagnostics-packetcapture

##|*NAME=Diagnostics: Packet Capture page

##|*DESCR=Allow access to the 'Diagnostics: Packet Capture' page.

##|*MATCH=diag_packet_capture.php*

##|-PRIV

	$nocsrf = true;

require_once("pfsense-utils.inc");

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']);

			}

		}

	}

}

	$host = $_POST['host'];

	$selectedif = $_POST['interface'];

	$count = $_POST['count'];

	$detail = $_POST['detail'];

	}

	if ($fam !== "" && $fam !== "ip" && $fam !== "ip6") {

		$input_errors[] = gettext("Invalid address family.");

	}

	}

		if (!is_subnet($host) && !is_ipaddr($host)) {

			$input_errors[] = sprintf(gettext("A valid IP address or CIDR block must be specified. [%s]"), $host);

		}

	}

	if ($port != "") {

		if (!is_port($port)) {

			$input_errors[] = gettext("Invalid value specified for port.");

		}

	}

	if ($snaplen == "") {

		$snaplen = 0;

			$input_errors[] = gettext("Invalid value specified for packet length.");

		}

	}

	if ($count == "") {

		$count = 0;

	} else {

		if (!is_numeric($count) || $count < 0) {

			$input_errors[] = gettext("Invalid value specified for packet count.");

		}

		$do_tcpdump = true;

			//if promiscuous mode is checked

			$disablepromiscuous = "";

		} else {

			//if promiscuous mode is unchecked

			$disablepromiscuous = "-p";

		}

			//if dns lookup is checked

			$disabledns = "";

		} else {

			//if dns lookup is unchecked

			$disabledns = "-n";

		}

			$action = gettext("Start");

			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");

			}

			//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;

		}

}

<?php

	<form action="diag_packet_capture.php" method="post" name="iform" id="iform">

	<table width="100%" border="0" cellpadding="6" cellspacing="0">

		<tr>

			<td width="17%" valign="top" class="vncellreq"><?=gettext("Interface");?></td>

			?>

			<?php foreach ($interfaces as $iface => $ifacename): ?>

				<option value="<?=$iface;?>" <?php if ($selectedif == $iface) echo "selected"; ?>>

				<?php echo $ifacename;?>

				</option>

			<?php endforeach; ?>

		<tr>

			<td width="17%" valign="top" class="vncellreq"><?=gettext("Promiscuous");?></td>

			<input name="promiscuous" type="checkbox"<?php if($_POST['promiscuous']) echo " CHECKED"; ?>>

			<br /><b><?=gettext("Note");?>: </b><?=gettext("Some network adapters do not support or work well in promiscuous mode.");?>

		<tr>

			<td width="17%" valign="top" class="vncellreq"><?=gettext("Address Family");?></td>

				<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>

		</tr>

			<td width="17%" valign="top" class="vncellreq"><?=gettext("Protocol");?></td>

				<option value="">Any</option>

				<option value="icmp" <?php if ($proto == "icmp") echo "selected"; ?>>ICMP</option>

				<option value="icmp6" <?php if ($proto == "icmp6") echo "selected"; ?>>ICMPv6</option>

				<option value="tcp" <?php if ($proto == "tcp") echo "selected"; ?>>TCP</option>

				<option value="udp" <?php if ($proto == "udp") echo "selected"; ?>>UDP</option>

				<option value="arp" <?php if ($proto == "arp") echo "selected"; ?>>ARP</option>

			</select>

		</tr>

			<td width="17%" valign="top" class="vncellreq"><?=gettext("Host Address");?></td>

			<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.");?>

		</tr>

		<tr>

			<td width="17%" valign="top" class="vncellreq"><?=gettext("Port");?></td>

			<br /><?=gettext("Leave blank if you do not want to filter by port.");?>

		</tr>

		<tr>

			<td width="17%" valign="top" class="vncellreq"><?=gettext("Packet Length");?></td>

		</tr>

		<tr>

			<td width="17%" valign="top" class="vncellreq"><?=gettext("Count");?></td>

		<tr>

			<td width="17%" valign="top" class="vncellreq"><?=gettext("Level of Detail");?></td>

				<option value="medium" <?php if ($detail == "medium") echo "selected"; ?>><?=gettext("Medium");?></option>

				<option value="high"   <?php if ($detail == "high")   echo "selected"; ?>><?=gettext("High");?></option>

				<option value="full"   <?php if ($detail == "full")   echo "selected"; ?>><?=gettext("Full");?></option>

					gettext("This option does not affect the level of detail when downloading the packet capture.");?>

		<tr>

			<td width="17%" valign="top" class="vncellreq"><?=gettext("Reverse DNS Lookup");?></td>

			<br /><b><?=gettext("Note");?>: </b><?=gettext("This option can cause delays for large packet captures.");?>

		</tr>

		<tr>

			<td width="17%" valign="top">&nbsp;</td>

			$processcheck = (trim(shell_exec("/bin/ps axw -O pid= | /usr/bin/grep tcpdump | /usr/bin/grep {$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") . "\">&nbsp;";

			else {

				echo "<input type=\"submit\" name=\"stopbtn\" value=\"" . gettext("Stop") . "\">&nbsp;";

			}

			if (file_exists($fp.$fn) and $processisrunning != true) {

		</tr>

	</form>

	<table width="100%" border="0" cellpadding="6" cellspacing="0">

		<td valign="top" colspan="2">

		if ($processisrunning == true)

		if ($do_tcpdump) {

			$matches = array();

				if ($proto == "carp") {

					$matches[] = 'proto 112';

				} else {

					$matches[] = $proto;

				}

			}

				$matches[] = "port ".$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 ");

				//action = stop

				switch ($detail) {

				case "full":

					$detail_args = "-vv -e";

					break;

				case "high":

					$detail_args = "-vv";

					break;

				case "medium":

					$detail_args = "-v";

					break;

				case "normal":

				default:

					$detail_args = "-q";

					break;

				}

				system("/usr/sbin/tcpdump $disabledns $detail_args -r $fp$fn");

		}

		</tr>

	</table>

	</td></tr>

include("fend.inc");