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<?php
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/*
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* ecl.php
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*
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* Copyright (c) 2010-2015 Rubicon Communications, LLC (Netgate). All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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require_once("globals.inc");
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require_once("functions.inc");
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require_once("config.lib.inc");
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require_once("config.inc");
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$debug = false;
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function get_boot_disk() {
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global $g, $debug;
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$disk = exec("/sbin/mount | /usr/bin/grep \"on / \" | /usr/bin/cut -d'/' -f3 | /usr/bin/cut -d' ' -f1");
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return $disk;
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}
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function get_swap_disks() {
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exec("/usr/sbin/swapinfo | /usr/bin/sed '/^\/dev/!d; s,^/dev/,,; s, .*\$,,'", $disks);
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return $disks;
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}
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function get_disk_slices($disk) {
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global $g, $debug;
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$slices = glob("/dev/" . $disk . "s*");
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$slices = str_replace("/dev/", "", $slices);
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return $slices;
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}
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function get_disks() {
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global $g, $debug;
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$disks_array = array();
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$disks_s = explode(" ", get_single_sysctl("kern.disks"));
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foreach ($disks_s as $disk) {
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if (trim($disk)) {
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$disks_array[] = $disk;
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}
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}
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return $disks_array;
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}
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function discover_config($mountpoint) {
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global $g, $debug;
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$locations_to_check = array("/", "/config");
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foreach ($locations_to_check as $ltc) {
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$tocheck = "/tmp/mnt/cf{$ltc}config.xml";
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if ($debug) {
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echo "\nChecking for $tocheck";
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if (file_exists($tocheck)) {
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echo " -> found!";
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}
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}
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if (file_exists($tocheck)) {
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return $tocheck;
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}
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}
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return "";
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}
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function test_config($file_location) {
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global $g, $debug;
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if (!$file_location) {
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return;
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}
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// config.xml was found. ensure it is sound.
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$root_obj = trim("<{$g['xml_rootobj']}>");
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$xml_file_head = exec("/usr/bin/head -2 " . escapeshellarg($file_location) . " | /usr/bin/tail -n1");
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if ($debug) {
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echo "\nroot obj = $root_obj";
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echo "\nfile head = $xml_file_head";
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}
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if ($xml_file_head == $root_obj) {
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// Now parse config to make sure
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$config_status = config_validate($file_location);
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if ($config_status) {
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return true;
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}
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}
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return false;
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}
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// Probes all disks looking for config.xml
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function find_config_xml() {
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global $g, $debug;
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$disks = get_disks();
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// Safety check.
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if (!is_array($disks)) {
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return;
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}
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$boot_disk = get_boot_disk();
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$swap_disks = get_swap_disks();
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exec("/bin/mkdir -p /tmp/mnt/cf");
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foreach ($disks as $disk) {
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$slices = get_disk_slices($disk);
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if (is_array($slices)) {
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foreach ($slices as $slice) {
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if ($slice == "") {
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continue;
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}
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if (stristr($slice, $boot_disk)) {
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if ($debug) {
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echo "\nSkipping boot device slice $slice";
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}
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continue;
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}
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if (in_array($slice, $swap_disks)) {
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if ($debug) {
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echo "\nSkipping swap device slice $slice";
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}
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continue;
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}
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echo " $slice";
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// First try msdos fs
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if ($debug) {
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echo "\n/sbin/mount -t msdosfs /dev/{$slice} /tmp/mnt/cf 2>/dev/null \n";
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}
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$result = exec("/sbin/mount -t msdosfs /dev/{$slice} /tmp/mnt/cf 2>/dev/null");
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// Next try regular fs (ufs)
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if (!$result) {
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if ($debug) {
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echo "\n/sbin/mount /dev/{$slice} /tmp/mnt/cf 2>/dev/null \n";
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}
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$result = exec("/sbin/mount /dev/{$slice} /tmp/mnt/cf 2>/dev/null");
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}
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$mounted = trim(exec("/sbin/mount | /usr/bin/grep -v grep | /usr/bin/grep '/tmp/mnt/cf' | /usr/bin/wc -l"));
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if ($debug) {
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echo "\nmounted: $mounted ";
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}
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if (intval($mounted) > 0) {
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// Item was mounted - look for config.xml file
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$config_location = discover_config($slice);
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if ($config_location) {
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if (test_config($config_location)) {
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// We have a valid configuration. Install it.
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echo " -> found config.xml\n";
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echo "Backing up old configuration...\n";
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backup_config();
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echo "Restoring [{$slice}] {$config_location}...\n";
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restore_backup($config_location);
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echo "Cleaning up...\n";
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exec("/sbin/umount /tmp/mnt/cf");
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exit;
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}
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}
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exec("/sbin/umount /tmp/mnt/cf");
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}
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}
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}
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}
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}
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echo "External config loader 1.0 is now starting...";
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find_config_xml();
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echo "\n";
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?>
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