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<?php
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/* $Id$ */
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/*
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	Copyright (C) 2008 Scott Ullrich <sullrich@gmail.com>
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	All rights reserved.
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	Based originally on system_firmware.php
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	(C)2003-2004 Manuel Kasper
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	All rights reserved.
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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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require("guiconfig.inc");
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$curcfg = $config['system']['firmware'];
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if(isset($curcfg['alturl']['enable']))
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	$updater_url = "{$config['system']['firmware']['alturl']['firmwareurl']}";
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else
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	$updater_url = $g['update_url'];
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$pgtitle = "Diagnostics: Firmware: Auto Update";
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include("head.inc");
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?>
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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<link href="gui.css" rel="stylesheet" type="text/css">
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</head>
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<body link="#0000CC" vlink="#0000CC" alink="#0000CC">
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<?php include("fbegin.inc"); ?>
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<p class="pgtitle"><?=$pgtitle?></font></p>
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<form action="system_firmware_auto.php" method="post">
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<table width="100%" border="0" cellpadding="6" cellspacing="0">
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	<tr>
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		<td>
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<?php
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	$tab_array = array();
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	$tab_array[0] = array("Manual Update", true, "system_firmware.php");
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	$tab_array[1] = array("Auto Update", false, "system_firmware_check.php");
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	$tab_array[2] = array("Updater Settings", false, "system_firmware_settings.php");
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	display_top_tabs($tab_array);
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?>
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		</td>
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	</tr>
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	<tr>
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	  <td class="tabcont">
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	      <table width="100%" border="0" cellpadding="6" cellspacing="0">
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			  <tr>
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			    <td class="tabcont">
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					<table width="100%" border="0" cellpadding="6" cellspacing="0">
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						<tr>
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							<td>
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								<center>
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								<table height='15' width='420' border='0' colspacing='0' cellpadding='0' cellspacing='0'>
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								<tr>
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									<td background="./themes/the_wall/images/misc/bar_left.gif" height='15' width='5'>
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									</td>
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									<td>
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									<table id="progholder" name="progholder" height='15' width='410' border='0' colspacing='0' cellpadding='0' cellspacing='0'>
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										<td background="./themes/the_wall/images/misc/bar_gray.gif" valign="top" align="left">
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											<img src='./themes/the_wall/images/misc/bar_blue.gif' width='0' height='15' name='progressbar' id='progressbar'>
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										</td>
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									</table>
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								</td>
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								<td background="./themes/the_wall/images/misc/bar_right.gif" height='15' width='5'>
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								</td>
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							</tr>
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						</table>
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						<br>
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						<!-- status box -->
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						<textarea cols="60" rows="1" name="status" id="status" wrap="hard">Beginning package installation.</textarea>
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						<!-- command output box -->
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						<textarea cols="60" rows="25" name="output" id="output" wrap="hard"></textarea>
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					</center>
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					</td>
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				</tr>
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	      </table>
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		</table>
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	  </td>
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	</tr>
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</table>
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</form>
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<?php include("fend.inc"); ?>
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</body>
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</html>
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<?php
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update_status("Downloading current version information...");
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$latest_version = download_file_with_progress_bar("{$updater_url}/version", "/tmp/{$g['product_name']}_version");
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$current_installed_pfsense_version = str_replace("\n", "", file_get_contents("/etc/version"));
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$latest_version = str_replace("\n", "", file_get_contents("/tmp/{$g['product_name']}_version"));
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if($current_installed_pfsense_version <> $latest_version) 
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	$needs_system_upgrade = true;
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if($needs_system_upgrade == true) {
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	update_status("Downloading updates ...");
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	conf_mount_rw();
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	$status = download_file_with_progress_bar("{$updater_url}/latest.tgz", "{$g['upload_path']}/latest.tgz");
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	$status = download_file_with_progress_bar("{$updater_url}/latest.tgz.sha256", "{$g['upload_path']}/latest.tgz.sha256");
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	conf_mount_ro();
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	update_output_window("{$g['product_name']} download complete.");
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}
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/* launch external upgrade helper */
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$external_upgrade_helper_text = "/etc/rc.firmware ";
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if($g['platform'] == "nanobsd")
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	$external_upgrade_helper_text .= "pfSenseNanoBSDupgrade ";
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else
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	$external_upgrade_helper_text .= "pfSenseupgrade ";
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if($needs_system_upgrade == true)
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	$external_upgrade_helper_text .= "{$g['upload_path']}/latest.tgz";
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$downloaded_latest_tgz_sha256 = str_replace("\n", "", `sha256 {$g['upload_path']}/latest.tgz  | awk '{ print $4 }'`);
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$upgrade_latest_tgz_sha256 = str_replace("\n", "", `cat {$g['upload_path']}/latest.tgz.sha256 | awk '{ print $4 }'`);
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$sigchk = 0;
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if(!isset($curcfg['alturl']['enable']))
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	$sigchk = verify_digital_signature("{$g['upload_path']}/latest.tgz");
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if ($sigchk == 1)
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	$sig_warning = "The digital signature on this image is invalid.";
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else if ($sigchk == 2)
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	$sig_warning = "This image is not digitally signed.";
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else if (($sigchk == 3) || ($sigchk == 4))
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	$sig_warning = "There has been an error verifying the signature on this image.";
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if (!verify_gzip_file("{$g['upload_path']}/latest.tgz")) {
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	update_status("The image file is corrupt.");
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	update_output_window("Update cannot continue");
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	if (file_exists("{$g['upload_path']}/latest.tgz")) {
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		conf_mount_rw();
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		unlink("{$g['upload_path']}/latest.tgz");
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		conf_mount_ro();
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	}
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	require("fend.inc");
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	exit;
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}
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if ($sigchk) {
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	update_status($sig_warning);
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	update_output_window("Update cannot continue");
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	if (file_exists("{$g['upload_path']}/latest.tgz")) {
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		conf_mount_rw();
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		unlink("{$g['upload_path']}/latest.tgz");
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		conf_mount_ro();
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	}
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	require("fend.inc");
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	exit;
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}
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if($downloaded_latest_tgz_sha256 <> $upgrade_latest_tgz_sha256) {
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	update_status("Downloading complete but sha256 does not match.");
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	update_output_window("Auto upgrade aborted.  \n\nDownloaded SHA256: $downloaded_latest_tgz_sha256 \n\nNeeded SHA256: $upgrade_latest_tgz_sha256");	
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} else {
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	update_output_window("{$g['product_name']} is now upgrading.\\n\\nThe firewall will reboot once the operation is completed.");
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	echo "\n<script language=\"JavaScript\">document.progressbar.style.visibility='hidden';\n</script>";
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	exec_rc_script_async("{$external_upgrade_helper_text}");
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}
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/*
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	Helper functions
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*/
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function download_file_with_progress_bar($url_file, $destination_file) {
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	global $ch, $fout, $file_size, $downloaded, $counter;
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	$file_size  = 1;
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	$downloaded = 1;
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	/* open destination file */
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	$fout = fopen($destination_file, "wb");
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	/*
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		Originally by Author: Keyvan Minoukadeh
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		Modified by Scott Ullrich to return Content-Length size
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	*/
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	$ch = curl_init();
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	curl_setopt($ch, CURLOPT_URL, $url_file);
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	curl_setopt($ch, CURLOPT_HEADERFUNCTION, 'read_header');
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	curl_setopt($ch, CURLOPT_WRITEFUNCTION, 'read_body');
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	curl_setopt($ch, CURLOPT_NOPROGRESS, '1');
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	curl_exec($ch);
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	fclose($fout);
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	return 1;
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	if ($error = curl_error($ch)) {
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	    return -1;
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	}
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}
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function read_header($ch, $string) {
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	global $file_size, $ch, $fout;
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	$length = strlen($string);
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	ereg("(Content-Length:) (.*)", $string, $regs);
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	if($regs[2] <> "") {
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		$file_size = intval($regs[2]);
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	}
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	return $length;
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}
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function read_body($ch, $string) {
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	global $fout, $file_size, $downloaded, $counter, $version, $latest_version, $current_installed_pfsense_version;
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	$length = strlen($string);
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	$downloaded += intval($length);
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	$downloadProgress = round(100 * (1 - $downloaded / $file_size), 0);
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	$downloadProgress = 100 - $downloadProgress;
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	$a = $file_size;
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	$b = $downloaded;
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	$c = $downloadProgress;
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	$text  = "  Auto Update Download Status\\n";
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	$text .= "---------------------------------\\n";
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	$text .= "  Latest Version  : {$latest_version}\\n";
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	$text .= "  Current Version : {$current_installed_pfsense_version}\\n";
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	$text .= "  File size       : {$a}\\n";
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	$text .= "  Downloaded      : {$b}\\n";
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	$text .= "  Percent         : {$c}%\\n";
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	$text .= "---------------------------------\\n";
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	$counter++;
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	if($counter > 150) {
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		update_output_window($text);
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		update_progress_bar($downloadProgress);
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		$counter = 0;
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	}
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	fwrite($fout, $string);
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	return $length;
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}
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?>
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