Possible hack for tags from private dents in public profile or wrong scope (both...

[quix0rs-gnu-social.git] / lib / theme.php

diff --git a/lib/theme.php b/lib/theme.php
index 95b7c1de4b584982ea4f4841962e27299a3581f9..fbcbbe052a3934eaad47fdd94d28ed15f1506dfd 100644 (file)
--- a/lib/theme.php
+++ b/lib/theme.php
@@ -51,12 +51,16 @@ if (!defined('STATUSNET') && !defined('LACONICA')) {
  * @license  http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
  * @link     http://status.net/
  */
-
 class Theme
 {
+    const FALLBACK = 'neo';
+
     var $name = null;
     var $dir  = null;
     var $path = null;
+    protected $metadata = null; // access via getMetadata() lazy-loader
+    protected $externals = null;
+    protected $deps = null;
 
     /**
      * Constructor
@@ -65,14 +69,14 @@ class Theme
      *
      * @param string $name Name of the theme; defaults to config value
      */
-
     function __construct($name=null)
     {
         if (empty($name)) {
             $name = common_config('site', 'theme');
         }
         if (!self::validName($name)) {
-            throw new ServerException("Invalid theme name.");
+            // TRANS: Server exception displayed if a theme name was invalid.
+            throw new ServerException(_('Invalid theme name.'));
         }
         $this->name = $name;
 
@@ -95,10 +99,21 @@ class Theme
         $fulldir = $instroot.'/'.$name;
 
         if (file_exists($fulldir) && is_dir($fulldir)) {
-
             $this->dir = $fulldir;
             $this->path = $this->relativeThemePath('theme', 'theme', $name);
+            return;
         }
+
+        // Ruh roh. Fall back to default, then.
+
+        common_log(LOG_WARNING, sprintf("Unable to find theme '%s', falling back to default theme '%s'",
+                                        $name,
+                                        Theme::FALLBACK));
+
+        $this->name = Theme::FALLBACK;
+        $this->dir  = $instroot.'/'.Theme::FALLBACK;
+        $this->path = $this->relativeThemePath('theme', 'theme', Theme::FALLBACK);
+
     }
 
     /**
@@ -113,11 +128,9 @@ class Theme
      *
      * @todo consolidate code with that for other customizable paths
      */
-
     protected function relativeThemePath($group, $fallbackSubdir, $name)
     {
         if (StatusNet::isHTTPS()) {
-
             $sslserver = common_config($group, 'sslserver');
 
             if (empty($sslserver)) {
@@ -140,9 +153,7 @@ class Theme
             }
 
             $protocol = 'https';
-
         } else {
-
             $path = common_config($group, 'path');
 
             if (empty($path)) {
@@ -179,7 +190,6 @@ class Theme
      *
      * @return string full pathname, like /var/www/mublog/theme/default/logo.png
      */
-
     function getFile($relative)
     {
         return $this->dir.'/'.$relative;
@@ -192,7 +202,6 @@ class Theme
      *
      * @return string full URL, like 'http://example.com/theme/default/logo.png'
      */
-
     function getPath($relative)
     {
         return $this->path.'/'.$relative;
@@ -207,9 +216,12 @@ class Theme
      */
     function getDeps()
     {
-        $chain = $this->doGetDeps(array($this->name));
-        array_pop($chain); // Drop us back off
-        return $chain;
+        if ($this->deps === null) {
+            $chain = $this->doGetDeps(array($this->name));
+            array_pop($chain); // Drop us back off
+            $this->deps = $chain;
+        }
+        return $this->deps;
     }
 
     protected function doGetDeps($chain)
@@ -241,6 +253,20 @@ class Theme
      * @return associative array of strings
      */
     function getMetadata()
+    {
+        if ($this->metadata == null) {
+            $this->metadata = $this->doGetMetadata();
+        }
+        return $this->metadata;
+    }
+
+    /**
+     * Pull data from the theme's theme.ini file.
+     * @fixme calling getFile will fall back to default theme, this may be unsafe.
+     *
+     * @return associative array of strings
+     */
+    private function doGetMetadata()
     {
         $iniFile = $this->getFile('theme.ini');
         if (file_exists($iniFile)) {
@@ -250,6 +276,32 @@ class Theme
         }
     }
 
+    /**
+     * Get list of any external URLs required by this theme and any
+     * dependencies. These are lazy-loaded from theme.ini.
+     *
+     * @return array of URL strings
+     */
+    function getExternals()
+    {
+        if ($this->externals == null) {
+            $data = $this->getMetadata();
+            if (!empty($data['external'])) {
+                $ext = (array)$data['external'];
+            } else {
+                $ext = array();
+            }
+
+            if (!empty($data['include'])) {
+                $theme = new Theme($data['include']);
+                $ext = array_merge($ext, $theme->getExternals());
+            }
+
+            $this->externals = array_unique($ext);
+        }
+        return $this->externals;
+    }
+
     /**
      * Gets the full path of a file in a theme dir based on its relative name
      *
@@ -258,7 +310,6 @@ class Theme
      *
      * @return string File path to the theme file
      */
-
     static function file($relative, $name=null)
     {
         $theme = new Theme($name);
@@ -273,7 +324,6 @@ class Theme
      *
      * @return string URL of the file
      */
-
     static function path($relative, $name=null)
     {
         $theme = new Theme($name);
@@ -285,7 +335,6 @@ class Theme
      *
      * @return array list of available theme names
      */
-
     static function listAvailable()
     {
         $local   = self::subdirsOf(self::localRoot());
@@ -305,7 +354,6 @@ class Theme
      *
      * @return array relative filenames of subdirs, or empty array
      */
-
     protected static function subdirsOf($dir)
     {
         $subdirs = array();
@@ -330,7 +378,6 @@ class Theme
      *
      * @return string local root dir for themes
      */
-
     protected static function localRoot()
     {
         $basedir = common_config('local', 'dir');
@@ -347,7 +394,6 @@ class Theme
      *
      * @return string root dir for StatusNet themes
      */
-
     protected static function installRoot()
     {
         $instroot = common_config('theme', 'dir');