pfSense

<?php

/*

	exec.php

*/

/* ====================================================================

 *	Copyright (c)  2004-2015  Electric Sheep Fencing, LLC. All rights reserved.

 *

 *	Exec+ v1.02-000 - Copyright 2001-2003, All rights reserved

 *	Created by technologEase (http://www.technologEase.com)

 *	(modified for m0n0wall by Manuel Kasper <mk@neon1.net>)\

 *

 *	Some or all of this file is based on the m0n0wall project which is

 *	Copyright (c)  2004 Manuel Kasper (BSD 2 clause)

 *

 *	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.

 *

 *	3. All advertising materials mentioning features or use of this software

 *		must display the following acknowledgment:

 *		"This product includes software developed by the pfSense Project

 *		 for use in the pfSense software distribution. (http://www.pfsense.org/).

 *

 *	4. The names "pfSense" and "pfSense Project" must not be used to

 *		 endorse or promote products derived from this software without

 *		 prior written permission. For written permission, please contact

 *		 coreteam@pfsense.org.

 *

 *	5. Products derived from this software may not be called "pfSense"

 *		nor may "pfSense" appear in their names without prior written

 *		permission of the Electric Sheep Fencing, LLC.

 *

 *	6. Redistributions of any form whatsoever must retain the following

 *		acknowledgment:

 *

 *	"This product includes software developed by the pfSense Project

 *	for use in the pfSense software distribution (http://www.pfsense.org/).

 *

 *	THIS SOFTWARE IS PROVIDED BY THE pfSense PROJECT ``AS IS'' AND ANY

 *	EXPRESSED 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 pfSense PROJECT OR

 *	ITS CONTRIBUTORS 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: shell

*/

##|+PRIV

##|*IDENT=page-diagnostics-command

##|*NAME=Diagnostics: Command

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

##|*MATCH=exec.php*

##|-PRIV

$allowautocomplete = true;

require("guiconfig.inc");

if (($_POST['submit'] == "DOWNLOAD") && file_exists($_POST['dlPath'])) {

	session_cache_limiter('public');

	$fd = fopen($_POST['dlPath'], "rb");

	header("Content-Type: application/octet-stream");

	header("Content-Length: " . filesize($_POST['dlPath']));

	header("Content-Disposition: attachment; filename=\"" .

		trim(htmlentities(basename($_POST['dlPath']))) . "\"");

	if (isset($_SERVER['HTTPS'])) {

		header('Pragma: ');

		header('Cache-Control: ');

	} else {

		header("Pragma: private");

		header("Cache-Control: private, must-revalidate");

	}

	fpassthru($fd);

	exit;

} else if (($_POST['submit'] == "UPLOAD") && is_uploaded_file($_FILES['ulfile']['tmp_name'])) {

	move_uploaded_file($_FILES['ulfile']['tmp_name'], "/tmp/" . $_FILES['ulfile']['name']);

	$ulmsg = "Uploaded file to /tmp/" . htmlentities($_FILES['ulfile']['name']);

	unset($_POST['txtCommand']);

}

if ($_POST) {

	conf_mount_rw();

}

// Function: is Blank

// Returns true or false depending on blankness of argument.

function isBlank($arg) {

	return preg_match("/^\s*$/", $arg);

}

// Function: Puts

// Put string, Ruby-style.

function puts($arg) {

	echo "$arg\n";

}

// "Constants".

$Version = '';

$ScriptName = $REQUEST['SCRIPT_NAME'];

// Get year.

$arrDT = localtime();

$intYear = $arrDT[5] + 1900;

$closehead = false;

$pgtitle = array(gettext("Diagnostics"), gettext("Execute command"));

include("head.inc");

?>

<script type="text/javascript">

//<![CDATA[

	// Create recall buffer array (of encoded strings).

<?php

if (isBlank($_POST['txtRecallBuffer'])) {

	puts("	 var arrRecallBuffer = new Array;");

} else {

	puts("	 var arrRecallBuffer = new Array(");

	$arrBuffer = explode("&", $_POST['txtRecallBuffer']);

	for ($i = 0; $i < (count($arrBuffer) - 1); $i++) {

		puts("		'" . htmlspecialchars($arrBuffer[$i], ENT_QUOTES | ENT_HTML401) . "',");

	}

	puts("		'" . htmlspecialchars($arrBuffer[count($arrBuffer) - 1], ENT_QUOTES | ENT_HTML401) . "'");

	puts("	 );");

}

?>

	// Set pointer to end of recall buffer.

	var intRecallPtr = arrRecallBuffer.length-1;

	// Functions to extend String class.

	function str_encode() { return escape( this ) }

	function str_decode() { return unescape( this ) }

	// Extend string class to include encode() and decode() functions.

	String.prototype.encode = str_encode

	String.prototype.decode = str_decode

	// Function: is Blank

	// Returns boolean true or false if argument is blank.

	function isBlank( strArg ) { return strArg.match( /^\s*$/ ) }

	// Function: frmExecPlus onSubmit (event handler)

	// Builds the recall buffer from the command string on submit.

	function frmExecPlus_onSubmit( form ) {

		if (!isBlank(form.txtCommand.value)) {

			// If this command is repeat of last command, then do not store command.

			if (form.txtCommand.value.encode() == arrRecallBuffer[arrRecallBuffer.length-1]) { return true }

			// Stuff encoded command string into the recall buffer.

			if (isBlank(form.txtRecallBuffer.value)) {

				form.txtRecallBuffer.value = form.txtCommand.value.encode();

			} else {

				form.txtRecallBuffer.value += '&' + form.txtCommand.value.encode();

			}

		}

		return true;

	}

	// Function: btnRecall onClick (event handler)

	// Recalls command buffer going either up or down.

	function btnRecall_onClick( form, n ) {

		// If nothing in recall buffer, then error.

		if (!arrRecallBuffer.length) {

			alert('<?=gettext("Nothing to recall"); ?>!');

			form.txtCommand.focus();

			return;

		}

		// Increment recall buffer pointer in positive or negative direction

		// according to <n>.

		intRecallPtr += n;

		// Make sure the buffer stays circular.

		if (intRecallPtr < 0) { intRecallPtr = arrRecallBuffer.length - 1 }

		if (intRecallPtr > (arrRecallBuffer.length - 1)) { intRecallPtr = 0 }

		// Recall the command.

		form.txtCommand.value = arrRecallBuffer[intRecallPtr].decode();

	}

	// Function: Reset onClick (event handler)

	// Resets form on reset button click event.

	function Reset_onClick( form ) {

		// Reset recall buffer pointer.

		intRecallPtr = arrRecallBuffer.length;

		// Clear form (could have spaces in it) and return focus ready for cmd.

		form.txtCommand.value = '';

		form.txtCommand.focus();

		return true;

	}

//]]>

</script>

<?php

if (isBlank($_POST['txtCommand']) && isBlank($_POST['txtPHPCommand']) && isBlank($ulmsg))

	print('<div class="alert alert-warning" role="alert">'.gettext("The capabilities offered here can be dangerous. No support is available. Use them at your own risk!").'</div>');

if (!isBlank($_POST['txtCommand'])):?>

	<div class="panel panel-success responsive">

		<div class="panel-heading"><h2 class="panel-title">Shell Output - <?=htmlspecialchars($_POST['txtCommand'])?></h2></div>

		<div class="panel-body">

			<div class="content">

				<pre>

<?php

	putenv("PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin");

	putenv("SCRIPT_FILENAME=" . strtok($_POST['txtCommand'], " "));

	$output = array();

	exec($_POST['txtCommand'] . ' 2>&1', $output);

	foreach($output as $line)

		print(htmlspecialchars($line) . "\r\n");

?>

				</pre>

			</div>

		</div>

	</div>

<? endif ?>

<form action="exec.php" method="post" enctype="multipart/form-data" name="frmExecPlus" onsubmit="return frmExecPlus_onSubmit( this );">

	<div class="panel panel-default">

		<div class="panel-heading"><h2 class="panel-title"><?=gettext('Execute Shell Command')?></h2></div>

		<div class="panel-body">

			<div class="content">

				<input id="txtCommand" name="txtCommand" placeholder="Command" type="text" class="col-sm-4"	 value="<?=htmlspecialchars($_POST['txtCommand'])?>" />

				<br /><br />

				<input type="hidden" name="txtRecallBuffer" value="<?=htmlspecialchars($_POST['txtRecallBuffer']) ?>" />

				<input type="button" class="btn btn-default btn-sm" name="btnRecallPrev" value="<" onclick="btnRecall_onClick( this.form, -1 );" />

				<button type="submit" class="btn btn-default btn-sm" value="EXEC"><?=gettext("Execute"); ?></button>

				<input type="button" class="btn btn-default btn-sm" name="btnRecallNext" value=">" onclick="btnRecall_onClick( this.form,  1 );" />

				<input type="button" class="btn btn-default btn-sm" value="<?=gettext("Clear"); ?>" onclick="return Reset_onClick( this.form );" />

			</div>

		</div>

	</div>

	<div class="panel panel-default">

		<div class="panel-heading"><h2 class="panel-title"><?=gettext('Download file')?></h2></div>

		<div class="panel-body">

			<div class="content">

				<input name="dlPath" type="text" id="dlPath" placeholder="File to download" class="col-sm-4" value="<?php echo htmlspecialchars($_GET['dlPath']) ?>"/>

				<br /><br />

				<button name="submit" type="submit" class="btn btn-default btn-sm" id="download" value="DOWNLOAD"><?=gettext("Download")?></button>

			</div>

		</div>

	</div>

<?php

	if ($ulmsg)

		print('<div class="alert alert-success" role="alert">' . $ulmsg .'</div>');

?>

	<div class="panel panel-default">

		<div class="panel-heading"><h2 class="panel-title"><?=gettext('Upload file')?></h2></div>

		<div class="panel-body">

			<div class="content">

				<input name="ulfile" type="file" class="btn btn-default btn-sm btn-file" id="ulfile" />

				<br />

				<button name="submit" type="submit" class="btn btn-default btn-sm" id="upload" value="UPLOAD"><?=gettext("Upload")?></button>

			</div>

		</div>

	</div>

<?php

	// Experimental version. Writes the user's php code to a file and executes it via a new instance of PHP

	// This is intended to prevent bad code from breaking the GUI

	if (!isBlank($_POST['txtPHPCommand'])) {

		puts("<div class=\"panel panel-success responsive\"><div class=\"panel-heading\">PHP response</div>");

		puts("<pre>");

		$tmpname = tempnam("/tmp", "");

		$phpfile = fopen($tmpname, "w");

		fwrite($phpfile, "<?php\n");

		fwrite($phpfile, "require_once(\"/etc/inc/config.inc\");\n");

		fwrite($phpfile, "require_once(\"/etc/inc/functions.inc\");\n\n");

		fwrite($phpfile, $_POST['txtPHPCommand'] . "\n");

		fwrite($phpfile, "?>\n");

		fclose($phpfile);

		exec("/usr/local/bin/php " . $tmpname, $output);

		for ($i=0; $i < count($output); $i++) {

			print($output[$i] . "\n");

		}

		unlink($tmpname);

//		echo eval($_POST['txtPHPCommand']);

		puts("&nbsp;</pre>");

		puts("</div>");

?>

<script type="text/javascript">

//<![CDATA[

	events.push(function(){

		// Scroll to the bottom of the page to more easily see the results of a PHP exec command

		$("html, body").animate({ scrollTop: $(document).height() }, 1000);

	});

//]]>

</script>

<?php

}

?>

	<div class="panel panel-default responsive">

		<div class="panel-heading"><h2 class="panel-title"><?=gettext('Execute PHP Commands')?></h2></div>

		<div class="panel-body">

			<div class="content">

				<textarea id="txtPHPCommand" placeholder="Command" name="txtPHPCommand" rows="9" cols="80"><?=htmlspecialchars($_POST['txtPHPCommand'])?></textarea>

				<br />

				<input type="submit" class="btn btn-default btn-sm" value="<?=gettext("Execute")?>" />

				<?=gettext("Example"); ?>: <code>print("Hello World!");</code>

			</div>

		</div>

	</div>

</form>

<?php

include("foot.inc");

if($_POST)

	conf_mount_ro();