106 lines
4.2 KiB
PHP
106 lines
4.2 KiB
PHP
<?php defined("SYSPATH") or die("No direct script access.");
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/**
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* Gallery - a web based photo album viewer and editor
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* Copyright (C) 2000-2013 Bharat Mediratta
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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class upgrade_checker_Core {
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const CHECK_URL = "http://galleryproject.org/versioncheck/gallery3";
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const AUTO_CHECK_INTERVAL = 604800; // 7 days in seconds
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/**
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* Return the last version info blob retrieved from the Gallery website or
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* null if no checks have been performed.
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*/
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static function version_info() {
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return unserialize(Cache::instance()->get("upgrade_checker_version_info"));
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}
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/**
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* Return true if auto checking is enabled.
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*/
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static function auto_check_enabled() {
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return (bool)module::get_var("gallery", "upgrade_checker_auto_enabled");
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}
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/**
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* Return true if it's time to auto check.
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*/
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static function should_auto_check() {
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if (upgrade_checker::auto_check_enabled() && random::int(1, 100) == 1) {
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$version_info = upgrade_checker::version_info();
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return (!$version_info ||
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(time() - $version_info->timestamp) > upgrade_checker::AUTO_CHECK_INTERVAL);
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}
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return false;
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}
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/**
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* Fech version info from the Gallery website.
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*/
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static function fetch_version_info() {
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$result = new stdClass();
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try {
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list ($status, $headers, $body) = remote::do_request(upgrade_checker::CHECK_URL);
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if ($status == "HTTP/1.1 200 OK") {
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$result->status = "success";
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foreach (explode("\n", $body) as $line) {
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if ($line) {
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list($key, $val) = explode("=", $line, 2);
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$result->data[$key] = $val;
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}
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}
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} else {
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$result->status = "error";
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}
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} catch (Exception $e) {
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Kohana_Log::add("error",
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sprintf("%s in %s at line %s:\n%s", $e->getMessage(), $e->getFile(),
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$e->getLine(), $e->getTraceAsString()));
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}
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$result->timestamp = time();
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Cache::instance()->set("upgrade_checker_version_info", serialize($result),
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array("upgrade"), 86400 * 365);
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}
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/**
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* Check the latest version info blob to see if it's time for an upgrade.
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*/
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static function get_upgrade_message() {
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$version_info = upgrade_checker::version_info();
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if ($version_info) {
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if (gallery::RELEASE_CHANNEL == "release") {
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if (version_compare($version_info->data["release_version"], gallery::VERSION, ">")) {
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return t("A newer version of Gallery is available! <a href=\"%upgrade-url\">Upgrade now</a> to version %version",
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array("version" => $version_info->data["release_version"],
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"upgrade-url" => $version_info->data["release_upgrade_url"]));
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}
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} else {
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$branch = gallery::RELEASE_BRANCH;
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if (isset($version_info->data["branch_{$branch}_build_number"]) &&
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version_compare($version_info->data["branch_{$branch}_build_number"],
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gallery::build_number(), ">")) {
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return t("A newer version of Gallery is available! <a href=\"%upgrade-url\">Upgrade now</a> to version %version (build %build on branch %branch)",
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array("version" => $version_info->data["branch_{$branch}_version"],
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"upgrade-url" => $version_info->data["branch_{$branch}_upgrade_url"],
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"build" => $version_info->data["branch_{$branch}_build_number"],
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"branch" => $branch));
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}
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}
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}
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}
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}
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