<?php
/* $Id$ */
/*
	system_firmware.php
*/
/* ====================================================================
 *	Copyright (c)  2004-2015  Electric Sheep Fencing, LLC. All rights reserved.
 *
 *  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_BUILDER_BINARIES:	/usr/bin/tar
	pfSense_MODULE: firmware
*/

##|+PRIV
##|*IDENT=page-system-firmware-manualupdate
##|*NAME=System: Firmware: Manual Update page
##|*DESCR=Allow access to the 'System: Firmware: Manual Update' page.
##|*MATCH=system_firmware.php*
##|-PRIV

$d_isfwfile = 1;
$nocsrf = true;

require_once("globals.inc");
require_once("functions.inc");
require_once("guiconfig.inc");
require_once("xmlrpc_client.inc");

$curcfg = $config['system']['firmware'];

/* Allow additional execution time 0 = no limit. */
ini_set('max_execution_time', '9999');
ini_set('max_input_time', '9999');

function file_is_for_platform($filename, $ul_name) {
	global $g;
	if ($g['platform'] == "nanobsd") {
		if (stristr($ul_name, "nanobsd")) {
			return true;
		} else {
			return false;
		}
	}
	$_gb = exec("/usr/bin/tar xzf $filename -C /tmp/ etc/platform");
	unset($_gb);
	if (!file_exists("/tmp/etc/platform")) {
		return false;
	}
	$upgrade_is_for_platform = trim(file_get_contents("/tmp/etc/platform", " \n\t\r"));
	if ($g['platform'] == $upgrade_is_for_platform) {
		@unlink("/tmp/etc/platform");
		return true;
	}
	return false;
}

function file_upload_error_message($error_code) {
	switch ($error_code) {
		case UPLOAD_ERR_INI_SIZE:
			return gettext('The uploaded file exceeds the upload_max_filesize directive in php.ini');
		case UPLOAD_ERR_FORM_SIZE:
			return gettext('The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form');
		case UPLOAD_ERR_PARTIAL:
			return gettext('The uploaded file was only partially uploaded');
		case UPLOAD_ERR_NO_FILE:
			return gettext('No file was uploaded');
		case UPLOAD_ERR_NO_TMP_DIR:
			return gettext('Missing a temporary folder');
		case UPLOAD_ERR_CANT_WRITE:
			return gettext('Failed to write file to disk');
		case UPLOAD_ERR_EXTENSION:
			return gettext('File upload stopped by extension');
		default:
			return gettext('Unknown upload error');
	}
}

/* if upgrade in progress, alert user */
if (is_subsystem_dirty('firmwarelock')) {
	$pgtitle = array(gettext("System"), gettext("Firmware"), gettext("Manual Update"));
	include("head.inc");
	include("fbegin.inc");
	print_info_box(gettext("An upgrade is currently in progress. The firewall will reboot when the operation is complete."));
	include("foot.inc");
	exit;
}

if ($_POST['backupbeforeupgrade']) {
	touch("/tmp/perform_full_backup.txt");
}

/* Handle manual upgrade */
if ($_POST && !is_subsystem_dirty('firmwarelock')) {

	unset($input_errors);
	unset($sig_warning);

	if (stristr($_POST['Submit'], gettext("Enable"))) {
		$mode = "enable";
	} else if (stristr($_POST['Submit'], gettext("Disable"))) {
		$mode = "disable";
	} else if (stristr($_POST['Submit'], gettext("Upgrade")) || $_POST['sig_override']) {
		$mode = "upgrade";
	} else if ($_POST['sig_no']) {
		if (file_exists("{$g['upload_path']}/firmware.tgz")) {
			unlink("{$g['upload_path']}/firmware.tgz");
		}
	}
	if ($mode) {
		if ($mode == "enable") {
			conf_mount_rw();
			mark_subsystem_dirty('firmware');
		} else if ($mode == "disable") {
			conf_mount_ro();
			clear_subsystem_dirty('firmware');
		} else if ($mode == "upgrade") {
			if ($_FILES['ulfile']['error']) {
				$errortext = "(" . file_upload_error_message($_FILES['ulfile']['error']) . ")";
			}
			if (is_uploaded_file($_FILES['ulfile']['tmp_name'])) {
				/* verify firmware image(s) */
				if (file_is_for_platform($_FILES['ulfile']['tmp_name'], $_FILES['ulfile']['name']) == false && !$_POST['sig_override']) {
					$input_errors[] = gettext("The uploaded image file is not for this platform.");
				} else if (!file_exists($_FILES['ulfile']['tmp_name'])) {
					/* probably out of memory for the MFS */
					$input_errors[] = gettext("Image upload failed (out of memory?)");
					mwexec("/etc/rc.firmware disable");
					clear_subsystem_dirty('firmware');
				} else {
					/* move the image so PHP won't delete it */
					rename($_FILES['ulfile']['tmp_name'], "{$g['upload_path']}/firmware.tgz");

					/* check digital signature */
					$sigchk = verify_digital_signature("{$g['upload_path']}/firmware.tgz");

					if ($sigchk == 1) {
						$sig_warning = gettext("The digital signature on this image is invalid.");
					} else if ($sigchk == 2 && !isset($config['system']['firmware']['allowinvalidsig'])) {
						$sig_warning = gettext("This image is not digitally signed.");
					} else if (($sigchk >= 3)) {
						$sig_warning = gettext("There has been an error verifying the signature on this image.");
					}

					if (!verify_gzip_file("{$g['upload_path']}/firmware.tgz")) {
						$input_errors[] = gettext("The image file is corrupt.");
						unlink("{$g['upload_path']}/firmware.tgz");
					}
				}
			}

			run_plugins("/usr/local/pkg/firmware_upgrade");

			/* Check for input errors, firmware locks, warnings, then check for firmware if sig_override is set */
			if (!$input_errors && !is_subsystem_dirty('firmwarelock') && (!$sig_warning || $_POST['sig_override'])) {
				if (file_exists("{$g['upload_path']}/firmware.tgz")) {
					/* fire up the update script in the background */
					mark_subsystem_dirty('firmwarelock');
					$savemsg = gettext("The firmware is now being updated. The firewall will reboot automatically.");
					if (stristr($_FILES['ulfile']['name'], "nanobsd") or $_POST['isnano'] == "yes") {
						mwexec_bg("/etc/rc.firmware pfSenseNanoBSDupgrade {$g['upload_path']}/firmware.tgz");
					} else {
						if ($g['platform'] == "nanobsd") {
							$whichone = "pfSenseNanoBSDupgrade";
						} else {
							$whichone = "pfSenseupgrade";
						}
						mwexec_bg("/etc/rc.firmware {$whichone} {$g['upload_path']}/firmware.tgz");
						unset($whichone);
					}
				} else {
					$savemsg = sprintf(gettext("Firmware image missing or other error, please try again %s."), $errortext);
				}
			}
		}
	}
}

$pgtitle = array(gettext("System"), gettext("Firmware"));
include("head.inc");

if ($input_errors)
	print_input_errors($input_errors);

if ($savemsg)
	print_info_box($savemsg);

if ($fwinfo != "")
	print_info_box($fwinfo);

$tab_array = array();
$tab_array[] = array(gettext("Manual Update"), true, "system_firmware.php");
$tab_array[] = array(gettext("Auto Update"), false, "system_firmware_check.php");
$tab_array[] = array(gettext("Updater Settings"), false, "system_firmware_settings.php");
if($g['hidedownloadbackup'] == false)
	$tab_array[] = array(gettext("Restore Full Backup"), false, "system_firmware_restorefullbackup.php");

display_top_tabs($tab_array);

// For a simple yes/no we can use an HTML form
if ($sig_warning && !$input_errors) {
	$sig_warning = gettext("The image you uploaded " .
		"is not an official/supported image and may lead to unexpected behavior or security " .
		"compromises. Only install images that come from sources that you trust, and make sure ".
		"that the image has not been tampered with.") . "<br /><br />".
		gettext("Do you want to install this image anyway (on your own risk)?");

	print_info_box($sig_warning);
?>
	<form action="system_firmware.php" method="post" enctype="multipart/form-data">
		<input name="sig_override" type="submit" class="btn btn-danger" id="sig_override" value=" <?=gettext("Yes");?> " />
		<input name="sig_no" type="submit" class="btn btn-default" id="sig_no" value=" <?=gettext("No"); ?> " />
	</form>
<?php

} else {
	// This is where the work gets done so Forms.classes will be used from this point
	if (!is_subsystem_dirty('firmwarelock')) {
		require_once('classes/Form.class.php');

		if (!is_subsystem_dirty('rebootreq')) {
			// Provide a button to enable firmware upgrades. Upgrades should be disabled on initial page load
			if (!is_subsystem_dirty('firmware') || !$_POST || $_POST['save']) {
				$enablebtn = new Form_Button(
					'Submit',
					'Enable firmware upload'
					);

				$enablebtn->addClass('btn-warning');
				$form = new Form($enablebtn);
				$section = new Form_Section('Invoke ' . $g['product_name'] .' Manual Upgrade');
				$section->addInput(new Form_StaticText('Enable', 'Click the "Enable firmware upload" button below to begin.'));
			}
			else {
				// Upgrades are now enabled
				$form = new Form('Disable firmware upload');

				$form->setMultipartEncoding();

				$section = new Form_Section('Perform ' . $g['product_name'] .' Manual Upgrade');

				if (!session_id())
					$upload_id = uniqid();
				else
					$upload_id = session_id();

				$section->addInput(new Form_Input(
					'UPLOAD_IDENTIFIER',
					'',
					'hidden',
					$upload_id
					));

				if(stristr($_FILES['ulfile']['name'],"nanobsd")) {
					$section->addInput(new Form_Input(
						'isnano',
						'',
						'hidden',
						'yes'
						));
				}

				if ($g['platform'] == "nanobsd")
					$type = "*.img.gz";
				else
					$type = "*.tgz";

				$filepicker = new Form_Input(
					'ulfile',
					'File to upload (' . $type . ')',
					'file',
					''
				);

				$section->addInput($filepicker)->setHelp('Choose the file you wish to upload');

				if ($g['hidebackupbeforeupgrade'] === false) {
					$section->addInput(new Form_Checkbox(
						'backupbeforeupgrade',
						Backup,
						'Perform a full backup prior to upgrade',
						false
					));
				}

				$section->addInput(new Form_Button(
					'Submit',
					'Upgrade firmware'
				))->addClass('btn-danger btn-sm')->setHelp('Click the "Upgrade firmware" button above to start the upgrade process');
			}

			$form->add($section);
			print($form);
		}
	}
	else {
		print_info_box('<strong>' . gettext("You must reboot the system before you can upgrade the firmware.") . '</strong>');
	}

	if (is_subsystem_dirty('firmware') && !is_subsystem_dirty('firmwarelock')) {
		print_info_box('<strong>' . gettext("DO NOT ") . '</strong>' . gettext('abort the firmware upgrade once it ' .
			'has started. The firewall will reboot automatically after ' .
			'storing the new firmware. The configuration will be maintained.'));
	}
}

include("foot.inc"); ?>