Merge remote branch 'upstream/master'

44 files changed, 435 insertions, 134 deletions

diff --git a/modules/gallery/helpers/MY_html.php b/modules/gallery/helpers/MY_html.php
index d15bd816..f5d36ad4 100644
--- a/modules/gallery/helpers/MY_html.php
+++ b/modules/gallery/helpers/MY_html.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/MY_num.php b/modules/gallery/helpers/MY_num.php
index e784b1ac..9787044c 100644
--- a/modules/gallery/helpers/MY_num.php
+++ b/modules/gallery/helpers/MY_num.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/MY_remote.php b/modules/gallery/helpers/MY_remote.php
index a1d2a3d1..67de36ff 100644
--- a/modules/gallery/helpers/MY_remote.php
+++ b/modules/gallery/helpers/MY_remote.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/MY_url.php b/modules/gallery/helpers/MY_url.php
index 8ac26602..47898687 100644
--- a/modules/gallery/helpers/MY_url.php
+++ b/modules/gallery/helpers/MY_url.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/access.php b/modules/gallery/helpers/access.php
index 4148049a..545e544f 100644
--- a/modules/gallery/helpers/access.php
+++ b/modules/gallery/helpers/access.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/album.php b/modules/gallery/helpers/album.php
index 89185e50..d8e918e0 100644
--- a/modules/gallery/helpers/album.php
+++ b/modules/gallery/helpers/album.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/auth.php b/modules/gallery/helpers/auth.php
index fa6242b9..3b2318c3 100644
--- a/modules/gallery/helpers/auth.php
+++ b/modules/gallery/helpers/auth.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/batch.php b/modules/gallery/helpers/batch.php
index 72d24400..461d5b2c 100644
--- a/modules/gallery/helpers/batch.php
+++ b/modules/gallery/helpers/batch.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/block_manager.php b/modules/gallery/helpers/block_manager.php
index 4bd649c2..c385a987 100644
--- a/modules/gallery/helpers/block_manager.php
+++ b/modules/gallery/helpers/block_manager.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/data_rest.php b/modules/gallery/helpers/data_rest.php
index 791de9c0..552df34e 100644
--- a/modules/gallery/helpers/data_rest.php
+++ b/modules/gallery/helpers/data_rest.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/dir.php b/modules/gallery/helpers/dir.php
index f66f443e..e1d11a14 100644
--- a/modules/gallery/helpers/dir.php
+++ b/modules/gallery/helpers/dir.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/gallery.php b/modules/gallery/helpers/gallery.php
index 282289b5..1fafdef7 100644
--- a/modules/gallery/helpers/gallery.php
+++ b/modules/gallery/helpers/gallery.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
@@ -18,7 +18,10 @@
  * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
  */
 class gallery_Core {
-  const VERSION = "3.0+ (git)";
+  const VERSION = "3.0+";
+  const CODE_NAME = "";
+  const RELEASE_CHANNEL = "git";
+  const RELEASE_BRANCH = "master";
 
   /**
    * If Gallery is in maintenance mode, then force all non-admins to get routed to a "This site is
@@ -184,4 +187,25 @@ class gallery_Core {
     }
     putenv("PATH=" .  implode(":", $path_env));
   }
+
+  /**
+   * Return a string describing this version of Gallery and the type of release.
+   */
+  static function version_string() {
+    if (gallery::RELEASE_CHANNEL == "git") {
+      return sprintf(
+        "%s (branch %s build %s)", gallery::VERSION, gallery::RELEASE_BRANCH,
+        gallery::build_number());
+    } else {
+      return sprintf("%s (%s)", gallery::VERSION, gallery::CODE_NAME);
+    }
+  }
+
+  /**
+   * Return the contents of the .build_number file, which should be a single integer.
+   */
+  static function build_number() {
+    $result = parse_ini_file(DOCROOT . ".build_number");
+    return $result["build_number"];
+  }
 }
\ No newline at end of file
diff --git a/modules/gallery/helpers/gallery_block.php b/modules/gallery/helpers/gallery_block.php
index 1d92d66d..b9ccf25b 100644
--- a/modules/gallery/helpers/gallery_block.php
+++ b/modules/gallery/helpers/gallery_block.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
@@ -25,7 +25,9 @@ class gallery_block_Core {
       "log_entries" => t("Log entries"),
       "stats" => t("Gallery stats"),
       "platform_info" => t("Platform information"),
-      "project_news" => t("Gallery project news"));
+      "project_news" => t("Gallery project news"),
+      "upgrade_checker" => t("Check for Gallery upgrades")
+    );
   }
 
   static function get_site_list() {
@@ -101,6 +103,15 @@ class gallery_block_Core {
         $block = "";
       }
       break;
+
+    case "upgrade_checker":
+      $block = new Block();
+      $block->css_id = "g-upgrade-available-block";
+      $block->title = t("Check for Gallery upgrades");
+      $block->content = new View("upgrade_checker_block.html");
+      $block->content->version_info = upgrade_checker::version_info();
+      $block->content->auto_check_enabled = upgrade_checker::auto_check_enabled();
+      $block->content->new_version = upgrade_checker::get_upgrade_message();
     }
     return $block;
   }
diff --git a/modules/gallery/helpers/gallery_error.php b/modules/gallery/helpers/gallery_error.php
index f9bbedfc..16699f84 100644
--- a/modules/gallery/helpers/gallery_error.php
+++ b/modules/gallery/helpers/gallery_error.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/gallery_event.php b/modules/gallery/helpers/gallery_event.php
index 13a0bdb4..07817187 100644
--- a/modules/gallery/helpers/gallery_event.php
+++ b/modules/gallery/helpers/gallery_event.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/gallery_graphics.php b/modules/gallery/helpers/gallery_graphics.php
index fca18076..e63b9336 100644
--- a/modules/gallery/helpers/gallery_graphics.php
+++ b/modules/gallery/helpers/gallery_graphics.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
@@ -56,7 +56,7 @@ class gallery_graphics_Core {
     }
 
     $dims = getimagesize($input_file);
-    if (max($dims[0], $dims[1]) < min($options["width"], $options["height"])) {
+    if (max($dims[0], $dims[1]) <= min($options["width"], $options["height"])) {
       // Image would get upscaled; do nothing
       copy($input_file, $output_file);
     } else {
diff --git a/modules/gallery/helpers/gallery_installer.php b/modules/gallery/helpers/gallery_installer.php
index f7b8da5f..01c59eaa 100644
--- a/modules/gallery/helpers/gallery_installer.php
+++ b/modules/gallery/helpers/gallery_installer.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
@@ -92,7 +92,7 @@ class gallery_installer {
                  `name` varchar(255) default NULL,
                  `owner_id` int(9) default NULL,
                  `parent_id` int(9) NOT NULL,
-                 `rand_key` float default NULL,
+                 `rand_key` decimal(11,10) default NULL,
                  `relative_path_cache` varchar(255) default NULL,
                  `relative_url_cache` varchar(255) default NULL,
                  `resize_dirty` boolean default 1,
@@ -136,7 +136,7 @@ class gallery_installer {
                  `id` int(9) NOT NULL auto_increment,
                  `key` varchar(255) default NULL,
                  `severity` varchar(32) default NULL,
-                 `value` varchar(255) default NULL,
+                 `value` text default NULL,
                  PRIMARY KEY (`id`),
                  UNIQUE KEY(`key`))
                DEFAULT CHARSET=utf8;");
@@ -259,6 +259,7 @@ class gallery_installer {
     module::set_var("gallery", "default_locale", "en_US");
     module::set_var("gallery", "image_quality", 75);
     module::set_var("gallery", "image_sharpen", 15);
+    module::set_var("gallery", "upgrade_checker_auto_enabled", true);
 
     // Add rules for generating our thumbnails and resizes
     graphics::add_rule(
@@ -285,6 +286,7 @@ class gallery_installer {
     block_manager::add("dashboard_sidebar", "gallery", "platform_info");
     block_manager::add("dashboard_sidebar", "gallery", "project_news");
     block_manager::add("dashboard_center", "gallery", "welcome");
+    block_manager::add("dashboard_center", "gallery", "upgrade_checker");
     block_manager::add("dashboard_center", "gallery", "photo_stream");
     block_manager::add("dashboard_center", "gallery", "log_entries");
 
@@ -309,7 +311,7 @@ class gallery_installer {
     module::set_var("gallery", "show_user_profiles_to", "registered_users");
     module::set_var("gallery", "extra_binary_paths", "/usr/local/bin:/opt/local/bin:/opt/bin");
 
-    module::set_version("gallery", 43);
+    module::set_version("gallery", 46);
   }
 
   static function upgrade($version) {
@@ -653,6 +655,28 @@ class gallery_installer {
       $db->query("ALTER TABLE {items} CHANGE `description` `description` text DEFAULT NULL");
       module::set_version("gallery", $version = 43);
     }
+
+    if ($version == 43) {
+      $db->query("ALTER TABLE {items} CHANGE `rand_key` `rand_key` DECIMAL(11, 10)");
+      module::set_version("gallery", $version = 44);
+    }
+
+    if ($version == 44) {
+      $db->query("ALTER TABLE {messages} CHANGE `value` `value` text default NULL");
+      module::set_version("gallery", $version = 45);
+    }
+
+    if ($version == 45) {
+      // Splice the upgrade_checker block into the admin dashboard at the top
+      // of the page, but under the welcome block if it's in the first position.
+      $blocks = block_manager::get_active("dashboard_center");
+      $index = count($blocks) && current($blocks) == array("gallery", "welcome") ? 1 : 0;
+      array_splice($blocks, $index, 0, array(random::int() => array("gallery", "upgrade_checker")));
+      block_manager::set_active("dashboard_center", $blocks);
+
+      module::set_var("gallery", "upgrade_checker_auto_enabled", true);
+      module::set_version("gallery", $version = 46);
+    }
   }
 
   static function uninstall() {
diff --git a/modules/gallery/helpers/gallery_rss.php b/modules/gallery/helpers/gallery_rss.php
index fb617934..612872e6 100644
--- a/modules/gallery/helpers/gallery_rss.php
+++ b/modules/gallery/helpers/gallery_rss.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/gallery_task.php b/modules/gallery/helpers/gallery_task.php
index 9ccff152..4a97d865 100644
--- a/modules/gallery/helpers/gallery_task.php
+++ b/modules/gallery/helpers/gallery_task.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/gallery_theme.php b/modules/gallery/helpers/gallery_theme.php
index 978c69a6..c4a82390 100644
--- a/modules/gallery/helpers/gallery_theme.php
+++ b/modules/gallery/helpers/gallery_theme.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
@@ -21,9 +21,9 @@ class gallery_theme_Core {
   static function head($theme) {
     $session = Session::instance();
     $buf = "";
-    $theme->css("gallery.css");
+    $buf .= $theme->css("gallery.css");
     if ($session->get("debug")) {
-      $theme->css("debug.css");
+      $buf .= $theme->css("debug.css");
     }
 
     if (module::is_active("rss")) {
@@ -40,32 +40,33 @@ class gallery_theme_Core {
 
     if (count(locales::installed())) {
       // Needed by the languages block
-      $theme->script("jquery.cookie.js");
+      $buf .= $theme->script("jquery.cookie.js");
     }
 
     if ($session->get("l10n_mode", false)) {
-      $theme->css("l10n_client.css");
-      $theme->script("jquery.cookie.js");
-      $theme->script("l10n_client.js");
+      $buf .= $theme->css("l10n_client.css")
+        . $theme->script("jquery.cookie.js")
+        . $theme->script("l10n_client.js");
     }
 
-    $theme->css("uploadify/uploadify.css");
+    $buf .= $theme->css("uploadify/uploadify.css");
     return $buf;
   }
 
   static function admin_head($theme) {
-    $theme->css("gallery.css");
-    $theme->script("gallery.panel.js");
+    $buf = $theme->css("gallery.css");
+    $buf .= $theme->script("gallery.panel.js");
     $session = Session::instance();
     if ($session->get("debug")) {
-      $theme->css("debug.css");
+      $buf .= $theme->css("debug.css");
     }
 
     if ($session->get("l10n_mode", false)) {
-      $theme->css("l10n_client.css");
-      $theme->script("jquery.cookie.js");
-      $theme->script("l10n_client.js");
+      $buf .= $theme->css("l10n_client.css");
+      $buf .= $theme->script("jquery.cookie.js");
+      $buf .=$theme->script("l10n_client.js");
     }
+    return $buf;
   }
 
   static function page_bottom($theme) {
@@ -75,13 +76,22 @@ class gallery_theme_Core {
       $profiler = new Profiler();
       $profiler->render();
     }
+    $content = "";
     if ($session->get("l10n_mode", false)) {
-      return L10n_Client_Controller::l10n_form();
+      $content .= L10n_Client_Controller::l10n_form();
     }
 
     if ($session->get_once("after_install")) {
-      return new View("welcome_message_loader.html");
+      $content .= new View("welcome_message_loader.html");
+    }
+
+    if (identity::active_user()->admin && upgrade_checker::should_auto_check()) {
+      $content .= '<script type="text/javascript">
+        $.ajax({url: "' . url::site("admin/upgrade_checker/check_now?csrf=" .
+                                    access::csrf_token()) . '"});
+        </script>';
     }
+    return $content;
   }
 
   static function admin_page_bottom($theme) {
@@ -106,6 +116,13 @@ class gallery_theme_Core {
       setInterval("adminReauthCheck();", 60 * 1000);
       </script>';
 
+    if (upgrade_checker::should_auto_check()) {
+      $content .= '<script type="text/javascript">
+        $.ajax({url: "' . url::site("admin/upgrade_checker/check_now?csrf=" .
+                                    access::csrf_token()) . '"});
+        </script>';
+    }
+
     if ($session->get("l10n_mode", false)) {
       $content .= "\n" . L10n_Client_Controller::l10n_form();
     }
@@ -114,7 +131,7 @@ class gallery_theme_Core {
 
   static function credits() {
     $version_string = SafeString::of_safe_html(
-        '<bdo dir="ltr">Gallery ' . gallery::VERSION . '</bdo>');
+      '<bdo dir="ltr">Gallery ' . gallery::version_string() . '</bdo>');
     return "<li class=\"g-first\">" .
       t(module::get_var("gallery", "credits"),
         array("url" => "http://gallery.menalto.com",
diff --git a/modules/gallery/helpers/graphics.php b/modules/gallery/helpers/graphics.php
index bfea2f2c..834211bf 100644
--- a/modules/gallery/helpers/graphics.php
+++ b/modules/gallery/helpers/graphics.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
@@ -315,60 +315,42 @@ class graphics_Core {
       $toolkits->graphicsmagick->installed = false;
       $toolkits->graphicsmagick->error = t("GraphicsMagick requires the <b>exec</b> function");
     } else {
-      gallery::set_path_env(
-        array(module::get_var("gallery", "graphics_toolkit_path"),
-              getenv("PATH"),
-              module::get_var("gallery", "extra_binary_paths")));
-
-      // @todo: consider refactoring the two segments below into a loop since they are so
-      // similar.
-
-      // ImageMagick
-      $path = exec("which convert");
-      $toolkits->imagemagick->name = "ImageMagick";
-      if ($path) {
-        if (@is_file($path)) {
-          preg_match('/Version: \S+ (\S+)/', `convert -v`, $matches);
-          $version = $matches[1];
-
-          $toolkits->imagemagick->installed = true;
-          $toolkits->imagemagick->version = $version;
-          $toolkits->imagemagick->binary = $path;
-          $toolkits->imagemagick->dir = dirname($path);
-          $toolkits->imagemagick->rotate = true;
-          $toolkits->imagemagick->sharpen = true;
-        } else {
-          $toolkits->imagemagick->installed = false;
-          $toolkits->imagemagick->error =
-            t("ImageMagick is installed, but PHP's open_basedir restriction prevents Gallery from using it.");
-        }
-      } else {
-        $toolkits->imagemagick->installed = false;
-        $toolkits->imagemagick->error = t("We could not locate ImageMagick on your system.");
-      }
-
-      // GraphicsMagick
-      $path = exec("which gm");
-      $toolkits->graphicsmagick->name = "GraphicsMagick";
-      if ($path) {
-        if (@is_file($path)) {
-          preg_match('/\S+ (\S+)/', `gm version`, $matches);
-          $version = $matches[1];
-
-          $toolkits->graphicsmagick->installed = true;
-          $toolkits->graphicsmagick->version = $version;
-          $toolkits->graphicsmagick->binary = $path;
-          $toolkits->graphicsmagick->dir = dirname($path);
-          $toolkits->graphicsmagick->rotate = true;
-          $toolkits->graphicsmagick->sharpen = true;
+      // ImageMagick & GraphicsMagick
+      $magick_kits = array(
+          "imagemagick" => array(
+            "name" => "ImageMagick", "binary" => "convert", "version" => "convert -v",
+            "version_regex" => "/Version: \S+ (\S+)/"),
+          "graphicsmagick" => array(
+            "name" => "GraphicsMagick", "binary" => "gm", "version" => "gm version",
+            "version_regex" => "/\S+ (\S+)/"));
+      // Loop through the kits
+      foreach ($magick_kits as $index => $settings) {
+        $path = system::find_binary(
+          $settings["binary"], module::get_var("gallery", "graphics_toolkit_path"));
+        $toolkits->$index->name = $settings["name"];
+        if ($path) {
+          if (@is_file($path) &&
+              preg_match($settings["version_regex"], shell_exec($settings["version"]), $matches)) {
+            $version = $matches[1];
+
+            $toolkits->$index->installed = true;
+            $toolkits->$index->version = $version;
+            $toolkits->$index->binary = $path;
+            $toolkits->$index->dir = dirname($path);
+            $toolkits->$index->rotate = true;
+            $toolkits->$index->sharpen = true;
+          } else {
+            $toolkits->$index->installed = false;
+            $toolkits->$index->error =
+              t("%toolkit_name is installed, but PHP's open_basedir restriction prevents Gallery from using it.",
+                array("toolkit_name" => $settings["name"]));
+          }
         } else {
-          $toolkits->graphicsmagick->installed = false;
-          $toolkits->graphicsmagick->error =
-            t("GraphicsMagick is installed, but PHP's open_basedir restriction prevents Gallery from using it.");
+          $toolkits->$index->installed = false;
+          $toolkits->$index->error =
+            t("We could not locate %toolkit_name on your system.",
+              array("toolkit_name" => $settings["name"]));
         }
-      } else {
-        $toolkits->graphicsmagick->installed = false;
-        $toolkits->graphicsmagick->error = t("We could not locate GraphicsMagick on your system.");
       }
     }
 
diff --git a/modules/gallery/helpers/identity.php b/modules/gallery/helpers/identity.php
index f45f72c3..ae888d6a 100644
--- a/modules/gallery/helpers/identity.php
+++ b/modules/gallery/helpers/identity.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/item.php b/modules/gallery/helpers/item.php
index 29dd8603..1a5c631e 100644
--- a/modules/gallery/helpers/item.php
+++ b/modules/gallery/helpers/item.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
@@ -304,4 +304,92 @@ class item_Core {
       ->where("rand_key", "<", random::percent())
       ->order_by("rand_key", "DESC");
   }
+
+  /**
+   * Find the position of the given item in its parent album.  The resulting
+   * value is 1-indexed, so the first child in the album is at position 1.
+   *
+   * @param Item_Model $item
+   * @param array      $where an array of arrays, each compatible with ORM::where()
+   */
+  static function get_position($item, $where=array()) {
+    $album = $item->parent();
+
+    if (!strcasecmp($album->sort_order, "DESC")) {
+      $comp = ">";
+    } else {
+      $comp = "<";
+    }
+    $query_model = ORM::factory("item");
+
+    // If the comparison column has NULLs in it, we can't use comparators on it
+    // and will have to deal with it the hard way.
+    $count = $query_model->viewable()
+      ->where("parent_id", "=", $album->id)
+      ->where($album->sort_column, "IS", null)
+      ->merge_where($where)
+      ->count_all();
+
+    if (empty($count)) {
+      // There are no NULLs in the sort column, so we can just use it directly.
+      $sort_column = $album->sort_column;
+
+      $position = $query_model->viewable()
+        ->where("parent_id", "=", $album->id)
+        ->where($sort_column, $comp, $item->$sort_column)
+        ->merge_where($where)
+        ->count_all();
+
+      // We stopped short of our target value in the sort (notice that we're
+      // using a inequality comparator above) because it's possible that we have
+      // duplicate values in the sort column.  An equality check would just
+      // arbitrarily pick one of those multiple possible equivalent columns,
+      // which would mean that if you choose a sort order that has duplicates,
+      // it'd pick any one of them as the child's "position".
+      //
+      // Fix this by doing a 2nd query where we iterate over the equivalent
+      // columns and add them to our position count.
+      foreach ($query_model->viewable()
+               ->select("id")
+               ->where("parent_id", "=", $album->id)
+               ->where($sort_column, "=", $item->$sort_column)
+               ->merge_where($where)
+               ->order_by(array("id" => "ASC"))
+               ->find_all() as $row) {
+        $position++;
+        if ($row->id == $item->id) {
+          break;
+        }
+      }
+    } else {
+      // There are NULLs in the sort column, so we can't use MySQL comparators.
+      // Fall back to iterating over every child row to get to the current one.
+      // This can be wildly inefficient for really large albums, but it should
+      // be a rare case that the user is sorting an album with null values in
+      // the sort column.
+      //
+      // Reproduce the children() functionality here using Database directly to
+      // avoid loading the whole ORM for each row.
+      $order_by = array($album->sort_column => $album->sort_order);
+      // Use id as a tie breaker
+      if ($album->sort_column != "id") {
+        $order_by["id"] = "ASC";
+      }
+
+      $position = 0;
+      foreach ($query_model->viewable()
+               ->select("id")
+               ->where("parent_id", "=", $album->id)
+               ->merge_where($where)
+               ->order_by($order_by)
+               ->find_all() as $row) {
+        $position++;
+        if ($row->id == $item->id) {
+          break;
+        }
+      }
+    }
+
+    return $position;
+  }
 }
\ No newline at end of file
diff --git a/modules/gallery/helpers/item_rest.php b/modules/gallery/helpers/item_rest.php
index a8bc36ad..2cc1b75d 100644
--- a/modules/gallery/helpers/item_rest.php
+++ b/modules/gallery/helpers/item_rest.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/items_rest.php b/modules/gallery/helpers/items_rest.php
index 3c09faa8..80db25b8 100644
--- a/modules/gallery/helpers/items_rest.php
+++ b/modules/gallery/helpers/items_rest.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/json.php b/modules/gallery/helpers/json.php
index a88608aa..c89b9f30 100644
--- a/modules/gallery/helpers/json.php
+++ b/modules/gallery/helpers/json.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/l10n_client.php b/modules/gallery/helpers/l10n_client.php
index 8c2685a8..6d580249 100644
--- a/modules/gallery/helpers/l10n_client.php
+++ b/modules/gallery/helpers/l10n_client.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
@@ -55,15 +55,24 @@ class l10n_client_Core {
     $url = self::_server_url("status");
     $signature = self::_sign($version, $api_key);
 
-    list ($response_data, $response_status) = remote::post(
-      $url, array("version" => $version,
-                  "client_token" => l10n_client::client_token(),
-                  "signature" => $signature,
-                  "uid" => l10n_client::server_uid($api_key)));
+    try {
+      list ($response_data, $response_status) = remote::post(
+        $url, array("version" => $version,
+                    "client_token" => l10n_client::client_token(),
+                    "signature" => $signature,
+                    "uid" => l10n_client::server_uid($api_key)));
+    } catch (ErrorException $e) {
+      // Log the error, but then return a "can't make connection" error
+      Kohana_Log::add("error", $e->getMessage() . "\n" . $e->getTraceAsString());
+    }
+    if (!isset($response_data) && !isset($response_status)) {
+      return array(false, false);
+    }
+
     if (!remote::success($response_status)) {
-      return false;
+      return array(true, false);
     }
-    return true;
+    return array(true, true);
   }
 
   /**
diff --git a/modules/gallery/helpers/l10n_scanner.php b/modules/gallery/helpers/l10n_scanner.php
index 843c74f7..572099ea 100644
--- a/modules/gallery/helpers/l10n_scanner.php
+++ b/modules/gallery/helpers/l10n_scanner.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/locales.php b/modules/gallery/helpers/locales.php
index d06bb319..47c2f76a 100644
--- a/modules/gallery/helpers/locales.php
+++ b/modules/gallery/helpers/locales.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/log.php b/modules/gallery/helpers/log.php
index 37154522..fe491ab1 100644
--- a/modules/gallery/helpers/log.php
+++ b/modules/gallery/helpers/log.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/message.php b/modules/gallery/helpers/message.php
index 64dd703c..f5a5eede 100644
--- a/modules/gallery/helpers/message.php
+++ b/modules/gallery/helpers/message.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/model_cache.php b/modules/gallery/helpers/model_cache.php
index b39d599e..10d85f3b 100644
--- a/modules/gallery/helpers/model_cache.php
+++ b/modules/gallery/helpers/model_cache.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/module.php b/modules/gallery/helpers/module.php
index 6efe6162..37f7f68a 100644
--- a/modules/gallery/helpers/module.php
+++ b/modules/gallery/helpers/module.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/movie.php b/modules/gallery/helpers/movie.php
index 0895c5f4..ddced0d2 100644
--- a/modules/gallery/helpers/movie.php
+++ b/modules/gallery/helpers/movie.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
@@ -83,22 +83,18 @@ class movie_Core {
     }
   }
 
+  /**
+   * Return the path to the ffmpeg binary if one exists and is executable, or null.
+   */
   static function find_ffmpeg() {
     if (!($ffmpeg_path = module::get_var("gallery", "ffmpeg_path")) || !file_exists($ffmpeg_path)) {
-      gallery::set_path_env(
-        array(module::get_var("gallery", "graphics_toolkit_path"),
-              getenv("PATH"),
-              module::get_var("gallery", "extra_binary_paths")));
-      if (function_exists("exec")) {
-        $ffmpeg_path = exec("which ffmpeg");
-      }
-
+      $ffmpeg_path = system::find_binary(
+        "ffmpeg", module::get_var("gallery", "graphics_toolkit_path"));
       module::set_var("gallery", "ffmpeg_path", $ffmpeg_path);
     }
     return $ffmpeg_path;
   }
 
-
   /**
    * Return the width, height, mime_type and extension of the given movie file.
    */
diff --git a/modules/gallery/helpers/photo.php b/modules/gallery/helpers/photo.php
index a38b4fb2..8913f567 100644
--- a/modules/gallery/helpers/photo.php
+++ b/modules/gallery/helpers/photo.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/random.php b/modules/gallery/helpers/random.php
index a26762bd..6016df7b 100644
--- a/modules/gallery/helpers/random.php
+++ b/modules/gallery/helpers/random.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
@@ -42,9 +42,13 @@ class random_Core {
   }
 
   /**
-   * Return a random number between 0 and mt_getrandmax()
+   * Return a random number between $min and $max.  If $min and $max are not specified,
+   * return a random number between 0 and mt_getrandmax()
    */
-  static function int() {
+  static function int($min=null, $max=null) {
+    if ($min || $max) {
+      return mt_rand($min, $max);
+    }
     return mt_rand();
   }
 }
\ No newline at end of file
diff --git a/modules/gallery/helpers/site_status.php b/modules/gallery/helpers/site_status.php
index 85f30dba..2ba7fca5 100644
--- a/modules/gallery/helpers/site_status.php
+++ b/modules/gallery/helpers/site_status.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/system.php b/modules/gallery/helpers/system.php
new file mode 100644
index 00000000..c39c7227
--- /dev/null
+++ b/modules/gallery/helpers/system.php
@@ -0,0 +1,43 @@
+<?php defined("SYSPATH") or die("No direct script access.");
+/**
+ * Gallery - a web based photo album viewer and editor
+ * Copyright (C) 2000-2011 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 system_Core {
+  /**
+   * Return the path to an executable version of the named binary, or null.
+   * Traverse the PATH environment variable looking for the given file.  If
+   * the $priority_path variable is set, check that path first.
+   */
+  static function find_binary($binary, $priority_path=null) {
+    $paths = array_merge(
+      explode(":", getenv("PATH")),
+      explode(":", module::get_var("gallery", "extra_binary_paths")));
+    if ($priority_path) {
+      array_unshift($paths, $priority_path);
+    }
+
+    foreach ($paths as $path) {
+      $candidate = "$path/$binary";
+      // @suppress errors below to avoid open_basedir issues
+      if (@file_exists($candidate) && @is_executable($candidate)) {
+        return $candidate;
+      }
+    }
+    return null;
+  }
+}
\ No newline at end of file
diff --git a/modules/gallery/helpers/task.php b/modules/gallery/helpers/task.php
index 4dda568f..0421035f 100644
--- a/modules/gallery/helpers/task.php
+++ b/modules/gallery/helpers/task.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/theme.php b/modules/gallery/helpers/theme.php
index 1dc1f3b6..f285834c 100644
--- a/modules/gallery/helpers/theme.php
+++ b/modules/gallery/helpers/theme.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/tree_rest.php b/modules/gallery/helpers/tree_rest.php
index 21928cbe..d9468ed8 100644
--- a/modules/gallery/helpers/tree_rest.php
+++ b/modules/gallery/helpers/tree_rest.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/upgrade_checker.php b/modules/gallery/helpers/upgrade_checker.php
new file mode 100644
index 00000000..ff65608b
--- /dev/null
+++ b/modules/gallery/helpers/upgrade_checker.php
@@ -0,0 +1,103 @@
+<?php defined("SYSPATH") or die("No direct script access.");
+/**
+ * Gallery - a web based photo album viewer and editor
+ * Copyright (C) 2000-2011 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";
+  const AUTO_CHECK_INTERVAL = 604800;  // 7 days in seconds
+
+  /**
+   * Return the last version info blob retrieved from the Gallery website or
+   * null if no checks have been performed.
+   */
+  static function version_info() {
+    return unserialize(Cache::instance()->get("upgrade_checker_version_info"));
+  }
+
+  /**
+   * Return true if auto checking is enabled.
+   */
+  static function auto_check_enabled() {
+    return (bool)module::get_var("gallery", "upgrade_checker_auto_enabled");
+  }
+
+  /**
+   * Return true if it's time to auto check.
+   */
+  static function should_auto_check() {
+    if (upgrade_checker::auto_check_enabled() && random::int(1, 100) == 1) {
+      $version_info = upgrade_checker::version_info();
+      return (!$version_info || (time() - $version_info->timestamp) > AUTO_CHECK_INTERVAL);
+    }
+    return false;
+  }
+
+  /**
+   * Fech version info from the Gallery website.
+   */
+  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);
+  }
+
+  /**
+   * Check the latest version info blob to see if it's time for an upgrade.
+   */
+  static function get_upgrade_message() {
+    $version_info = upgrade_checker::version_info();
+    if ($version_info) {
+      if (gallery::RELEASE_CHANNEL == "release") {
+        if (version_compare($version_info->data["release_version"], gallery::VERSION, ">")) {
+          return t("A newer version of Gallery is available! <a href=\"%upgrade-url\">Upgrade now</a> to version %version",
+                   array("version" => $version_info->data["release_version"],
+                         "upgrade-url" => $version_info->data["release_upgrade_url"]));
+        }
+      } else {
+        $branch = gallery::RELEASE_BRANCH;
+        if (isset($version_info->data["branch_{$branch}_build_number"]) &&
+            version_compare($version_info->data["branch_{$branch}_build_number"],
+                            gallery::build_number(), ">")) {
+          return t("A newer version of Gallery is available! <a href=\"%upgrade-url\">Upgrade now</a> to version %version (build %build on branch %branch)",
+                   array("version" => $version_info->data["branch_{$branch}_version"],
+                         "upgrade-url" => $version_info->data["branch_{$branch}_upgrade_url"],
+                         "build" => $version_info->data["branch_{$branch}_build_number"],
+                         "branch" => $branch));
+        }
+      }
+    }
+  }
+}
diff --git a/modules/gallery/helpers/user_profile.php b/modules/gallery/helpers/user_profile.php
index d9cc8ace..d2a7441d 100644
--- a/modules/gallery/helpers/user_profile.php
+++ b/modules/gallery/helpers/user_profile.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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
diff --git a/modules/gallery/helpers/xml.php b/modules/gallery/helpers/xml.php
index 2d3a2545..569ba5b2 100644
--- a/modules/gallery/helpers/xml.php
+++ b/modules/gallery/helpers/xml.php
@@ -1,7 +1,7 @@
 <?php defined("SYSPATH") or die("No direct script access.");
 /**
  * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2010 Bharat Mediratta
+ * Copyright (C) 2000-2011 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