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ab6a5cfc
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Scott Ullrich
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<?php
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/*
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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6b07c15a
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Matthew Grooms
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##|+PRIV
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##|*IDENT=page-diagnostics-packetcapture
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##|*NAME=Diagnostics: Packet Capture page
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##|*DESCR=Allow access to the 'Diagnostics: Packet Capture' page.
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##|*MATCH=diag_packet_capture.php*
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##|-PRIV
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ab6a5cfc
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Scott Ullrich
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$pgtitle = array("Diagnostics", "Packet Capture");
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d7cd7129
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Scott Ullrich
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require_once("guiconfig.inc");
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require_once("pfsense-utils.inc");
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ab6a5cfc
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Scott Ullrich
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9b1b06b5
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Scott Dale
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$fp = "/tmp/";
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ab6a5cfc
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Scott Ullrich
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$fn = "packetcapture.cap";
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$snaplen = 1500;//default packet length
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$count = 100;//default number of packets to capture
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if ($_POST) {
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$do_tcpdump = true;
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$host = $_POST['host'];
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$selectedif = $_POST['interface'];
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$count = $_POST['count'];
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$packetlength = $_POST['snaplen'];
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$port = $_POST['port'];
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$detail = $_POST['detail'];
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if ($_POST['dnsquery'])//if dns lookup is checked
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{
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$disabledns = "";
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}
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else //if dns lookup is unchecked
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{
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$disabledns = "-n";
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}
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if ($_POST['startbtn'] != "" )
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{
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$action = "Start";
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232d6540
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Scott Dale
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//delete previous packet capture if it exists
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if (file_exists($fp.$fn))
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unlink ($fp.$fn);
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ab6a5cfc
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Scott Ullrich
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}
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elseif ($_POST['stopbtn']!= "")
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{
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$action = "Stop";
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232d6540
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Scott Dale
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$processes_running = trim(shell_exec("ps axw -O pid= | grep tcpdump | grep $fn | grep -v pflog"));
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d5c2fde5
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Scott Ullrich
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//explode processes into an array, (delimiter is new line)
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$processes_running_array = explode("\n", $processes_running);
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//kill each of the packetcapture processes
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foreach ($processes_running_array as $process)
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{
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$process_id_pos = strpos($process, ' ');
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$process_id = substr($process, 0, $process_id_pos);
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exec("kill $process_id");
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}
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ab6a5cfc
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Scott Ullrich
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}
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else //download file
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{
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93c86d2b
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Scott Dale
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$fs = filesize($fp.$fn);
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ab6a5cfc
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Scott Ullrich
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header("Content-Type: application/octet-stream");
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9f3259e0
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Scott Dale
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header("Content-Disposition: attachment; filename=$fn");
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ab6a5cfc
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Scott Ullrich
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header("Content-Length: $fs");
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readfile($fp.$fn);
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}
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}
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else
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{
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$do_tcpdump = false;
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}
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$pgtitle = "Diagnostics: Packet Capture";
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include("head.inc"); ?>
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<body link="#000000" vlink="#0000CC" alink="#0000CC">
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<? include("fbegin.inc"); ?>
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<table width="100%" border="0" cellpadding="0" cellspacing="0">
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<tr>
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<td>
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<form action="diag_packet_capture.php" method="post" name="iform" id="iform">
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<table width="100%" border="0" cellpadding="6" cellspacing="0">
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0cece4a2
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Scott Ullrich
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<tr>
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<td colspan="2" valign="top" class="listtopic">Packet capture</td>
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</tr>
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ab6a5cfc
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Scott Ullrich
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<tr>
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<td width="17%" valign="top" class="vncellreq">Interface</td>
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<td width="83%" class="vtable">
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dddf4c16
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Scott Ullrich
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<select name="interface">
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cbe3ea96
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Ermal Luçi
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<?php $interfaces = get_configured_interface_with_descr();
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ab6a5cfc
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Scott Ullrich
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foreach ($interfaces as $iface => $ifacename): ?>
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7ec05d27
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Ermal Luçi
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<option value="<?=$iface;?>" <?php if (!link_interface_to_bridge($iface) && $selectedif == $iface) echo "selected"; ?>>
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ab6a5cfc
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Scott Ullrich
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<?php echo $ifacename;?>
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</option>
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<?php endforeach;?>
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</select>
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bda839a7
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Scott Dale
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<br/>Select the interface the traffic will be passing through. Typically this will be the WAN interface.
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ab6a5cfc
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Scott Ullrich
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</td>
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</tr>
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<tr>
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<td width="17%" valign="top" class="vncellreq">Host Address</td>
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<td width="83%" class="vtable">
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b5c78501
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Seth Mos
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<input name="host" type="text" class="formfld host" id="host" size="20" value="<?=htmlspecialchars($host);?>">
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bda839a7
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Scott Dale
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<br/>This value is either the Source or Destination IP address. The packet capture will look for this address in either field.
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<br/>This value can be a domain name or IP address.
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<br/>If you leave this field blank all packets on the specified interface will be captured
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ab6a5cfc
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Scott Ullrich
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</td>
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</tr>
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<tr>
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<td width="17%" valign="top" class="vncellreq">Port</td>
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<td width="83%" class="vtable">
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b5c78501
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Seth Mos
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<input name="port" type="text" class="formfld unknown" id="port" size="5" value="<?=$port;?>">
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bda839a7
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Scott Dale
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<br/>The port can be either the source or destination port. The packet capture will look for this port in either field.
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<br/>Leave blank if you do not want to the capture to filter by port.
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ab6a5cfc
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Scott Ullrich
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</td>
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</tr>
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<tr>
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<td width="17%" valign="top" class="vncellreq">Packet Length</td>
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<td width="83%" class="vtable">
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b5c78501
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Seth Mos
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<input name="snaplen" type="text" class="formfld unknown" id="snaplen" size="5" value="<?=$snaplen;?>">
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bda839a7
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Scott Dale
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<br/>The Packet length is the number of bytes the packet will capture for each payload. Default value is 1500.
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<br/>This value should be the same as the MTU of the Interface selected above.
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ab6a5cfc
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Scott Ullrich
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</td>
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</tr>
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<tr>
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<td width="17%" valign="top" class="vncellreq">Count</td>
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<td width="83%" class="vtable">
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b5c78501
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Seth Mos
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<input name="count" type="text" class="formfld unknown" id="count" size="5" value="<?=$count;?>">
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bda839a7
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Scott Dale
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<br/>This is the number of packets the packet capture will grab. Default value is 100. <br/>Enter 0 (zero) for no count limit.
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ab6a5cfc
|
Scott Ullrich
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</tr>
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<tr>
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<td width="17%" valign="top" class="vncellreq">Level of Detail</td>
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<td width="83%" class="vtable">
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b5c78501
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Seth Mos
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<select name="detail" type="text" class="formselect" id="detail" size="1">
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ab6a5cfc
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Scott Ullrich
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<option value="-q" <?php if ($detail == "-q") echo "selected"; ?>>Normal</option>
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<option value="-v" <?php if ($detail == "-v") echo "selected"; ?>>Medium</option>
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<option value="-vv" <?php if ($detail == "-vv") echo "selected"; ?>>High</option>
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<option value="-vv -e" <?php if ($detail == "-vv -e") echo "selected"; ?>>Full</option>
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</select>
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bda839a7
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Scott Dale
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<br/>This is the level of detail that will be displayed after hitting 'Stop' when the packets have been captured. <br/><b>Note:</b> This option does not affect the level of detail when downloading the packet capture.
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ab6a5cfc
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Scott Ullrich
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</tr>
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<tr>
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<td width="17%" valign="top" class="vncellreq">Reverse DNS Lookup</td>
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<td width="83%" class="vtable">
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<input name="dnsquery" type="checkbox"<?php if($_POST['dnsquery']) echo " CHECKED"; ?>>
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bda839a7
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Scott Dale
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<br/>This check box will cause the packet capture to perform a reverse DNS lookup associated with all IP addresses.
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<br/><b>Note: </b>This option can be CPU intensive for large packet captures.
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ab6a5cfc
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Scott Ullrich
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</td>
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</tr>
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<tr>
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<td width="17%" valign="top"> </td>
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<td width="83%">
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<?php
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d5c2fde5
|
Scott Ullrich
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/*check to see if packet capture tcpdump is already running*/
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232d6540
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Scott Dale
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$processcheck = (trim(shell_exec("ps axw -O pid= | grep tcpdump | grep $fn | grep -v pflog")));
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9b1b06b5
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Scott Dale
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$processisrunning = false;
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d5c2fde5
|
Scott Ullrich
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| 188 |
9b1b06b5
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Scott Dale
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if ($processcheck != false)
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$processisrunning = true;
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if (($action == "Stop" or $action == "") and $processisrunning != true)
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ab6a5cfc
|
Scott Ullrich
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echo "<input type=\"submit\" name=\"startbtn\" value=\"Start\"> ";
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232d6540
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Scott Dale
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else{
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ab6a5cfc
|
Scott Ullrich
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echo "<input type=\"submit\" name=\"stopbtn\" value=\"Stop\"> ";
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232d6540
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Scott Dale
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}
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9b1b06b5
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Scott Dale
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if (file_exists($fp.$fn) and $processisrunning != true){
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| 197 |
ab6a5cfc
|
Scott Ullrich
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echo "<input type=\"submit\" name=\"downloadbtn\" value=\"Download Capture\">";
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echo " (The packet capture file was last updated: " . date("F jS, Y g:i:s a.", filemtime($fp.$fn)) . ")";
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}
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?>
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</td>
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</tr>
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<tr>
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<td valign="top" colspan="2">
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<?php
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9b1b06b5
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Scott Dale
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echo "<font face='terminal' size='2'>";
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if ($processisrunning == true)
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echo("<strong>Packet Capture is running.</strong><br/>");
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if ($do_tcpdump) {
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| 211 |
ab6a5cfc
|
Scott Ullrich
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if ($port != "")
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232d6540
|
Scott Dale
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{
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$searchport = "and port ".$port;
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if($host <> "")
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$searchport = "and port ".$port;
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else
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$searchport = "port ".$port;
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}
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else
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{
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$searchport = "";
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}
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if ($host != "")
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{
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| 227 |
bda839a7
|
Scott Dale
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$searchhost = "host " . $host;
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| 228 |
232d6540
|
Scott Dale
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}
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else
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{
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$searchhost = "";
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| 232 |
bda839a7
|
Scott Dale
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}
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if ($count != "0" )
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{
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$searchcount = "-c " . $count;
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}
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else
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{
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$searchcount = "";
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}
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| 241 |
ab6a5cfc
|
Scott Ullrich
|
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| 242 |
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$selectedif = convert_friendly_interface_to_real_interface_name($selectedif);
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| 243 |
232d6540
|
Scott Dale
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| 244 |
9b1b06b5
|
Scott Dale
|
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| 245 |
232d6540
|
Scott Dale
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| 246 |
ab6a5cfc
|
Scott Ullrich
|
if ($action == "Start")
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{
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| 248 |
bda839a7
|
Scott Dale
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echo("<strong>Packet Capture is running.</strong><br/>");
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| 249 |
9b1b06b5
|
Scott Dale
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mwexec_bg ("/usr/sbin/tcpdump -i $selectedif $searchcount -s $packetlength -w $fp$fn $searchhost $searchport");
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| 250 |
ab6a5cfc
|
Scott Ullrich
|
}
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| 251 |
232d6540
|
Scott Dale
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else //action = stop
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| 252 |
ab6a5cfc
|
Scott Ullrich
|
{
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| 253 |
d5c2fde5
|
Scott Ullrich
|
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| 254 |
bda839a7
|
Scott Dale
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echo("<strong>Packet Capture stopped. <br/><br/>Packets Captured:</strong><br/>");
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| 255 |
ab6a5cfc
|
Scott Ullrich
|
?>
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| 256 |
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<textarea style="width:98%" name="code" rows="15" cols="66" wrap="off" readonly="readonly">
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| 257 |
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<?php
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| 258 |
9b1b06b5
|
Scott Dale
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system ("/usr/sbin/tcpdump $disabledns $detail -r $fp$fn");?>
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| 259 |
ab6a5cfc
|
Scott Ullrich
|
</textarea><?php
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| 260 |
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}
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| 261 |
232d6540
|
Scott Dale
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}?>
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| 262 |
ab6a5cfc
|
Scott Ullrich
|
</td>
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| 263 |
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</tr>
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| 264 |
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<tr>
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| 265 |
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| 266 |
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</table>
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| 267 |
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</form>
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| 268 |
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</td></tr></table>
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| 269 |
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<?php include("fend.inc"); ?>
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