From 70abfb2a20734802c922c0e9917d2a1778aef3f2 Mon Sep 17 00:00:00 2001
From: Bharat Mediratta <bharat@menalto.com>
Date: Sun, 16 Jan 2011 22:16:09 -0800
Subject: Upgrade checking code is now here, along with a bump of the Gallery
 module to v46.  There's a new block in the admin dashboard which controls
 whether automatic checking happens, and lets you check immediately.  If a
 newer version is detected, a site status message appears for admins providing
 upgrade instructions.

Automatic checking is not yet implemented (even though the UI claims
that it exists).  This is all for #1605.
---
 modules/gallery/helpers/upgrade_checker.php | 91 +++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 modules/gallery/helpers/upgrade_checker.php

(limited to 'modules/gallery/helpers/upgrade_checker.php')

diff --git a/modules/gallery/helpers/upgrade_checker.php b/modules/gallery/helpers/upgrade_checker.php
new file mode 100644
index 00000000..9311cf4a
--- /dev/null
+++ b/modules/gallery/helpers/upgrade_checker.php
@@ -0,0 +1,91 @@
+<?php defined("SYSPATH") or die("No direct script access.");
+/**
+ * Gallery - a web based photo album viewer and editor
+ * Copyright (C) 2000-2010 Bharat Mediratta
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+class upgrade_checker_Core {
+  const CHECK_URL = "http://gallery.menalto.com/versioncheck/gallery3";
+
+  static function version_info() {
+    return unserialize(Cache::instance()->get("upgrade_checker_version_info"));
+  }
+
+  static function auto_check_enabled() {
+    return (bool)module::get_var("gallery", "upgrade_checker_auto_enabled");
+  }
+
+  static function fetch_version_info() {
+    $result = new stdClass();
+    try {
+      list ($status, $headers, $body) = remote::do_request(upgrade_checker::CHECK_URL);
+      if ($status == "HTTP/1.1 200 OK") {
+        $result->status = "success";
+        foreach (explode("\n", $body) as $line) {
+          if ($line) {
+            list($key, $val) = explode("=", $line, 2);
+            $result->data[$key] = $val;
+          }
+        }
+      } else {
+        $result->status = "error";
+      }
+    } catch (Exception $e) {
+      Kohana_Log::add("error",
+                      sprintf("%s in %s at line %s:\n%s", $e->getMessage(), $e->getFile(),
+                              $e->getLine(), $e->getTraceAsString()));
+    }
+    $result->timestamp = time();
+    Cache::instance()->set("upgrade_checker_version_info", serialize($result), null, 86400 * 365);
+  }
+
+  static function check_for_upgrade() {
+    $version_info = upgrade_checker::version_info();
+    $upgrade_available = false;
+    if ($version_info) {
+      if (gallery::RELEASE_CHANNEL == "release") {
+        if (version_compare($version_info->data["release_version"], gallery::VERSION, ">")) {
+          site_status::warning(
+            t("A newer version of Gallery is available! <a href=\"%upgrade-url\">Upgrade now</a> to version %version or <a href=\"%hide-url\">wait until later</a>.",
+              array("version" => $version_info->data["release_version"],
+                    "upgrade-url" => $version_info->data["release_upgrade_url"],
+                    "hide-url" => url::site("admin/upgrade_checker/remind_me_later?csrf=__CSRF__"))),
+            "upgrade_checker");
+          $upgrade_available = true;
+        }
+      } else {
+        $branch = gallery::RELEASE_BRANCH;
+        if (isset($version_info->data["{$branch}_build_number"]) &&
+            version_compare($version_info->data["{$branch}_build_number"],
+                            gallery::build_number(), ">")) {
+          site_status::warning(
+            t("A newer version of Gallery is available! <a href=\"%upgrade-url\">Upgrade now</a> to version %version (build %build on branch %branch) or <a href=\"%hide-url\">wait until later</a>.",
+              array("version" => $version_info->data["{$branch}_version"],
+                    "upgrade-url" => $version_info->data["{$branch}_upgrade_url"],
+                    "build" => $version_info->data["{$branch}_build_number"],
+                    "branch" => $branch,
+                    "hide-url" => url::site("admin/upgrade_checker/remind_me_later?csrf=__CSRF__"))),
+            "upgrade_checker");
+          $upgrade_available = true;
+        }
+      }
+    }
+
+    if (!$upgrade_available) {
+      site_status::clear("upgrade_checker");
+    }
+  }
+}
-- 
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