- user permissions ask update at each admin page generation. Table

  user_forbidden must be updated only if current user is not in
  administrative section

- bug fixed : category.php, error on page title when non category selected

- admin/search : bug on variable $PHP_SELF, replaced by $_SERVER['PHP_SELF']

- admin/user_perm : inheritence management. When a category become
  authorized, all parent categories become authorized, when a category
  become forbidden, all child category become forbidden

- no more recursivity in delete_categories function

- new function get_fs_directories for future new method of synchronization

- new function get_uppercat_ids replacing several pieces of code doing the
  same

- new function get_fulldirs used for metadata function get_filelist and
  future new method of synchronization

- new function get_fs for future new method of synchronization

- typo correction on lang item "about_message"

- no link to category privacy status management on user permission anymore
  (giving the menu item instead)


git-svn-id: http://piwigo.org/svn/trunk@657 68402e56-0260-453c-a942-63ccdbb3a9ee

11 files changed, 380 insertions, 172 deletions

diff --git a/admin.php b/admin.php
index 2e6490b03..22bb2d28a 100644
--- a/admin.php
+++ b/admin.php
@@ -246,4 +246,12 @@ else
 }
 $template->pparse('admin');
 include(PHPWG_ROOT_PATH.'include/page_tail.php');
+// +-----------------------------------------------------------------------+
+// |                     order permission refreshment                      |
+// +-----------------------------------------------------------------------+
+$query = '
+UPDATE '.USER_FORBIDDEN_TABLE.'
+  SET need_update = \'true\'
+;';
+pwg_query($query);
 ?>
diff --git a/admin/include/functions.php b/admin/include/functions.php
index fdf1da91c..41d3f0c8b 100644
--- a/admin/include/functions.php
+++ b/admin/include/functions.php
@@ -199,12 +199,17 @@ function delete_categories($ids)
   {
     return;
   }
+
+  // add sub-category ids to the given ids : if a category is deleted, all
+  // sub-categories must be so
+  $ids = get_subcat_ids($ids);
   
   // destruction of all the related elements
   $query = '
 SELECT id
   FROM '.IMAGES_TABLE.'
-  WHERE storage_category_id IN ('.implode(',', $ids).')
+  WHERE storage_category_id IN (
+'.wordwrap(implode(', ', $ids), 80, "\n").')
 ;';
   $result = pwg_query($query);
   $element_ids = array();
@@ -217,43 +222,30 @@ SELECT id
   // destruction of the links between images and this category
   $query = '
 DELETE FROM '.IMAGE_CATEGORY_TABLE.'
-  WHERE category_id IN ('.implode(',', $ids).')
+  WHERE category_id IN (
+'.wordwrap(implode(', ', $ids), 80, "\n").')
 ;';
   pwg_query($query);
 
   // destruction of the access linked to the category
   $query = '
 DELETE FROM '.USER_ACCESS_TABLE.'
-  WHERE cat_id IN ('.implode(',', $ids).')
+  WHERE cat_id IN (
+'.wordwrap(implode(', ', $ids), 80, "\n").')
 ;';
   pwg_query($query);
   $query = '
 DELETE FROM '.GROUP_ACCESS_TABLE.'
-  WHERE cat_id IN ('.implode(',', $ids).')
+  WHERE cat_id IN (
+'.wordwrap(implode(', ', $ids), 80, "\n").')
 ;';
   pwg_query($query);
 
-  // destruction of the sub-categories
-  $query = '
-SELECT id
-  FROM '.CATEGORIES_TABLE.'
-  WHERE id_uppercat IN ('.implode(',', $ids).')
-;';
-  $result = pwg_query($query);
-  $subcat_ids = array();
-  while($row = mysql_fetch_array($result))
-  {
-    array_push($subcat_ids, $row['id']);
-  }
-  if (count($subcat_ids) > 0)
-  {
-    delete_categories($subcat_ids);
-  }
-
   // destruction of the category
   $query = '
 DELETE FROM '.CATEGORIES_TABLE.'
-  WHERE id IN ('.implode(',', $ids).')
+  WHERE id IN (
+'.wordwrap(implode(', ', $ids), 80, "\n").')
 ;';
   pwg_query($query);
 
@@ -763,6 +755,46 @@ function get_category_directories( $basedir )
   return $sub_dirs;
 }
 
+/**
+ * returns an array containing sub-directories which can be a category,
+ * recursive by default
+ *
+ * directories nammed "thumbnail", "pwg_high" or "pwg_representative" are
+ * omitted
+ *
+ * @param string $basedir
+ * @return array
+ */
+function get_fs_directories($path, $recursive = true)
+{
+  $dirs = array();
+  
+  if (is_dir($path))
+  {
+    if ($contents = opendir($path))
+    {
+      while (($node = readdir($contents)) !== false)
+      {
+        if (is_dir($path.'/'.$node)
+            and $node != '.'
+            and $node != '..'
+            and $node != 'thumbnail'
+            and $node != 'pwg_high'
+            and $node != 'pwg_representative')
+        {
+          array_push($dirs, $path.'/'.$node);
+          if ($recursive)
+          {
+            $dirs = array_merge($dirs, get_fs_directories($path.'/'.$node));
+          }
+        }
+      }
+    }
+  }
+
+  return $dirs;
+}
+
 // my_error returns (or send to standard output) the message concerning the
 // error occured for the last mysql query.
 function my_error($header, $echo = true)
@@ -1008,20 +1040,7 @@ function set_cat_visible($categories, $value)
   // unlocking a category => all its parent categories become unlocked
   if ($value == 'true')
   {
-    $uppercats = array();
-    $query = '
-SELECT uppercats
-  FROM '.CATEGORIES_TABLE.'
-  WHERE id IN ('.implode(',', $categories).')
-;';
-    $result = pwg_query($query);
-    while ($row = mysql_fetch_array($result))
-    {
-      $uppercats = array_merge($uppercats,
-                               explode(',', $row['uppercats']));
-    }
-    $uppercats = array_unique($uppercats);
-      
+    $uppercats = get_uppercat_ids($categories);
     $query = '
 UPDATE '.CATEGORIES_TABLE.'
   SET visible = \'true\'
@@ -1059,20 +1078,7 @@ function set_cat_status($categories, $value)
   // make public a category => all its parent categories become public
   if ($value == 'public')
   {
-    $uppercats = array();
-    $query = '
-SELECT uppercats
-  FROM '.CATEGORIES_TABLE.'
-  WHERE id IN ('.implode(',', $categories).')
-;';
-    $result = pwg_query($query);
-    while ($row = mysql_fetch_array($result))
-    {
-      $uppercats = array_merge($uppercats,
-                               explode(',', $row['uppercats']));
-    }
-    $uppercats = array_unique($uppercats);
-      
+    $uppercats = get_uppercat_ids($categories);
     $query = '
 UPDATE '.CATEGORIES_TABLE.'
   SET status = \'public\'
@@ -1094,6 +1100,37 @@ UPDATE '.CATEGORIES_TABLE.'
 }
 
 /**
+ * returns all uppercats category ids of the given category ids
+ *
+ * @param array cat_ids
+ * @return array
+ */
+function get_uppercat_ids($cat_ids)
+{
+  if (!is_array($cat_ids) or count($cat_ids) < 1)
+  {
+    return array();
+  }
+  
+  $uppercats = array();
+
+  $query = '
+SELECT uppercats
+  FROM '.CATEGORIES_TABLE.'
+  WHERE id IN ('.implode(',', $cat_ids).')
+;';
+  $result = pwg_query($query);
+  while ($row = mysql_fetch_array($result))
+  {
+    $uppercats = array_merge($uppercats,
+                             explode(',', $row['uppercats']));
+  }
+  $uppercats = array_unique($uppercats);
+
+  return $uppercats;
+}
+
+/**
  * set a new random representant to the categories
  *
  * @param array categories
@@ -1157,4 +1194,155 @@ SELECT id, if(id_uppercat is null,\'\',id_uppercat) AS id_uppercat
   $fields = array('primary' => array('id'), 'update' => array('rank'));
   mass_updates(CATEGORIES_TABLE, $fields, $datas);
 }
+
+/**
+ * returns the fulldir for each given category id
+ *
+ * @param array cat_ids
+ * @return array
+ */
+function get_fulldirs($cat_ids)
+{
+  if (count($cat_ids) == 0)
+  {
+    return array();
+  }
+  
+  // caching directories of existing categories
+  $query = '
+SELECT id, dir
+  FROM '.CATEGORIES_TABLE.'
+  WHERE dir IS NOT NULL
+;';
+  $result = pwg_query($query);
+  $cat_dirs = array();
+  while ($row = mysql_fetch_array($result))
+  {
+    $cat_dirs[$row['id']] = $row['dir'];
+  }
+
+  // filling $uppercats_array : to each category id the uppercats list is
+  // associated
+  $uppercats_array = array();
+  
+  $query = '
+SELECT id, uppercats
+  FROM '.CATEGORIES_TABLE.'
+  WHERE id IN (
+'.wordwrap(implode(', ', $cat_ids), 80, "\n").')
+;';
+  $result = pwg_query($query);
+  while ($row = mysql_fetch_array($result))
+  {
+    $uppercats_array[$row['id']] = $row['uppercats'];
+  }
+  
+  $query = '
+SELECT galleries_url
+  FROM '.SITES_TABLE.'
+  WHERE id = 1
+';
+  $row = mysql_fetch_array(pwg_query($query));
+  $basedir = $row['galleries_url'];
+  
+  // filling $cat_fulldirs
+  $cat_fulldirs = array();
+  foreach ($uppercats_array as $cat_id => $uppercats)
+  {
+    $uppercats = str_replace(',', '/', $uppercats);
+    $cat_fulldirs[$cat_id] = $basedir.preg_replace('/(\d+)/e',
+                                                   "\$cat_dirs['$1']",
+                                                   $uppercats);
+  }
+
+  return $cat_fulldirs;
+}
+
+/**
+ * returns an array with all file system files according to
+ * $conf['file_ext']
+ *
+ * @param string $path
+ * @param bool recursive
+ * @return array
+ */
+function get_fs($path, $recursive = true)
+{
+  global $conf;
+
+  // because isset is faster than in_array...
+  if (!isset($conf['flip_picture_ext']))
+  {
+    $conf['flip_picture_ext'] = array_flip($conf['picture_ext']);
+  }
+  if (!isset($conf['flip_file_ext']))
+  {
+    $conf['flip_file_ext'] = array_flip($conf['file_ext']);
+  }
+
+  $fs['elements'] = array();
+  $fs['thumbnails'] = array();
+  $fs['representatives'] = array();
+  $subdirs = array();
+
+  if (is_dir($path))
+  {
+    if ($contents = opendir($path))
+    {
+      while (($node = readdir($contents)) !== false)
+      {
+        if (is_file($path.'/'.$node))
+        {
+          $extension = get_extension($node);
+          
+//          if (in_array($extension, $conf['picture_ext']))
+          if (isset($conf['flip_picture_ext'][$extension]))
+          {
+            if (basename($path) == 'thumbnail')
+            {
+              array_push($fs['thumbnails'], $path.'/'.$node);
+            }
+            else if (basename($path) == 'pwg_representative')
+            {
+              array_push($fs['representatives'], $path.'/'.$node);
+            }
+            else
+            {
+              array_push($fs['elements'], $path.'/'.$node);
+            }
+          }
+//          else if (in_array($extension, $conf['file_ext']))
+          else if (isset($conf['flip_file_ext'][$extension]))
+          {
+            array_push($fs['elements'], $path.'/'.$node);
+          }
+        }
+        else if (is_dir($path.'/'.$node)
+                 and $node != '.'
+                 and $node != '..'
+                 and $node != 'pwg_high'
+                 and $recursive)
+        {
+          array_push($subdirs, $node);
+        }
+      }
+    }
+    closedir($contents);
+
+    foreach ($subdirs as $subdir)
+    {
+      $tmp_fs = get_fs($path.'/'.$subdir);
+
+      $fs['elements']        = array_merge($fs['elements'],
+                                           $tmp_fs['elements']);
+      
+      $fs['thumbnails']      = array_merge($fs['thumbnails'],
+                                           $tmp_fs['thumbnails']);
+      
+      $fs['representatives'] = array_merge($fs['representatives'],
+                                           $tmp_fs['representatives']);
+    }
+  }
+  return $fs;
+}
 ?>
diff --git a/admin/include/functions_metadata.php b/admin/include/functions_metadata.php
index 023ab219e..39b3bf450 100644
--- a/admin/include/functions_metadata.php
+++ b/admin/include/functions_metadata.php
@@ -132,26 +132,11 @@ function update_metadata($files)
  */
 function get_filelist($category_id = '', $recursive = false, $only_new = false)
 {
-  $files = array();
-
-  $query = '
-SELECT id, dir
-  FROM '.CATEGORIES_TABLE.'
-  WHERE dir IS NOT NULL
-;';
-  $result = pwg_query($query);
-  $cat_dirs = array();
-  while ($row = mysql_fetch_array($result))
-  {
-    $cat_dirs[$row['id']] = $row['dir'];
-  }
-
-  // filling $uppercats_array : to each category id the uppercats list is
-  // associated
-  $uppercats_array = array();
+  // filling $cat_ids : all categories required
+  $cat_ids = array();
   
   $query = '
-SELECT id, uppercats
+SELECT id
   FROM '.CATEGORIES_TABLE.'
   WHERE site_id = 1
     AND dir IS NOT NULL';
@@ -175,37 +160,20 @@ SELECT id, uppercats
   $result = pwg_query($query);
   while ($row = mysql_fetch_array($result))
   {
-    $uppercats_array[$row['id']] =  $row['uppercats'];
+    array_push($cat_ids, $row['id']);
   }
 
-  if (count($uppercats_array) == 0)
+  if (count($cat_ids) == 0)
   {
     return array();
   }
 
-  $query = '
-SELECT galleries_url
-  FROM '.SITES_TABLE.'
-  WHERE id = 1
-';
-  $row = mysql_fetch_array(pwg_query($query));
-  $basedir = $row['galleries_url'];
-  
-  // filling $cat_fulldirs
-  $cat_fulldirs = array();
-  foreach ($uppercats_array as $cat_id => $uppercats)
-  {
-    $uppercats = str_replace(',', '/', $uppercats);
-    $cat_fulldirs[$cat_id] = $basedir.preg_replace('/(\d+)/e',
-                                                   "\$cat_dirs['$1']",
-                                                   $uppercats);
-  }
+  $files = array();
 
   $query = '
-SELECT id, file, storage_category_id
+SELECT id, path
   FROM '.IMAGES_TABLE.'
-  WHERE storage_category_id IN ('.implode(','
-                                          ,array_keys($uppercats_array)).')';
+  WHERE storage_category_id IN ('.implode(',', $cat_ids).')';
   if ($only_new)
   {
     $query.= '
@@ -217,8 +185,7 @@ SELECT id, file, storage_category_id
   $result = pwg_query($query);
   while ($row = mysql_fetch_array($result))
   {
-    $files[$row['id']]
-      = $cat_fulldirs[$row['storage_category_id']].'/'.$row['file'];
+    $files[$row['id']] = $row['path'];
   }
   
   return $files;
diff --git a/admin/search.php b/admin/search.php
index f1716ff84..8a247d942 100644
--- a/admin/search.php
+++ b/admin/search.php
@@ -44,7 +44,7 @@ $template->assign_vars(array(
   'L_UPDATE_USERNAME'=>$lang['Look_up_user'],
   'L_CLOSE_WINDOW'=>$lang['Close'],
 
-  'F_SEARCH_ACTION' => add_session_id($PHP_SELF),
+  'F_SEARCH_ACTION' => add_session_id($_SERVER['PHP_SELF']),
   ));
 
 //----------------------------------------------------------------- form action
diff --git a/admin/user_perm.php b/admin/user_perm.php
index f8c83d659..66c01e97a 100644
--- a/admin/user_perm.php
+++ b/admin/user_perm.php
@@ -25,50 +25,87 @@
 // | USA.                                                                  |
 // +-----------------------------------------------------------------------+
 
-if( !defined("IN_ADMIN") )
+if (!defined('IN_ADMIN'))
 {
-  die ("Hacking attempt!");
+  die('Hacking attempt!');
 }
-include_once( PHPWG_ROOT_PATH.'admin/include/isadmin.inc.php' );
+include_once(PHPWG_ROOT_PATH.'admin/include/isadmin.inc.php');
 
 $userdata = array();
-if ( isset( $_POST['submituser'] ) )
+if (isset($_POST['submituser']))
 {
   $userdata = getuserdata($_POST['username']);
 }
-elseif (isset($_POST['falsify']) || isset($_POST['trueify']))
+else if (isset($_POST['falsify'])
+         and isset($_POST['cat_true'])
+         and count($_POST['cat_true']) > 0)
 {
   $userdata = getuserdata(intval($_POST['userid']));
-  // cleaning the user_access table for this user
-  if (isset($_POST['cat_true']) && count($_POST['cat_true']) > 0)
+  // if you forbid access to a category, all sub-categories become
+  // automatically forbidden
+  $subcats = get_subcat_ids($_POST['cat_true']);
+  $query = '
+DELETE FROM '.USER_ACCESS_TABLE.'
+  WHERE user_id = '.$userdata['id'].'
+    AND cat_id IN ('.implode(',', $subcats).')
+;';
+  pwg_query($query);
+}
+else if (isset($_POST['trueify'])
+         and isset($_POST['cat_false'])
+         and count($_POST['cat_false']) > 0)
+{
+  $userdata = getuserdata(intval($_POST['userid']));
+    
+  $uppercats = get_uppercat_ids($_POST['cat_false']);
+  $private_uppercats = array();
+
+  $query = '
+SELECT id
+  FROM '.CATEGORIES_TABLE.'
+  WHERE id IN ('.implode(',', $uppercats).')
+    AND status = \'private\'
+;';
+  $result = pwg_query($query);
+  while ($row = mysql_fetch_array($result))
   {
-    foreach ($_POST['cat_true'] as $auth_cat)
-	{
-  	  $query = 'DELETE FROM '.USER_ACCESS_TABLE;
-      $query.= ' WHERE user_id = '.$userdata['id'];
-      $query.= ' AND cat_id='.$auth_cat.';';
-      pwg_query ( $query );
-	}
+    array_push($private_uppercats, $row['id']);
   }
+
+  // retrying to authorize a category which is already authorized may cause
+  // an error (in SQL statement), so we need to know which categories are
+  // accesible
+  $authorized_ids = array();
+    
+  $query = '
+SELECT cat_id
+  FROM '.USER_ACCESS_TABLE.'
+  WHERE user_id = '.$userdata['id'].'
+;';
+  $result = pwg_query($query);
   
-  if (isset($_POST['cat_false']) && count($_POST['cat_false']) > 0)
+  while ($row = mysql_fetch_array($result))
   {
-    foreach ($_POST['cat_false'] as $auth_cat)
-	{
-  	  $query = 'INSERT INTO '.USER_ACCESS_TABLE;
-      $query.= ' (user_id,cat_id) VALUES';
-      $query.= ' ('.$userdata['id'].','.$auth_cat.')';
-      $query.= ';';
-      pwg_query ( $query );
-	}
+    array_push($authorized_ids, $row['cat_id']);
+  }
+  
+  $inserts = array();
+  $to_autorize_ids = array_diff($private_uppercats, $authorized_ids);
+  foreach ($to_autorize_ids as $to_autorize_id)
+  {
+    array_push($inserts, array('user_id' => $userdata['id'],
+                               'cat_id' => $to_autorize_id));
   }
-}
 
+  mass_inserts(USER_ACCESS_TABLE, array('user_id','cat_id'), $inserts);
+}
 //----------------------------------------------------- template initialization
-
-if ( empty($userdata))
+if (empty($userdata))
 {
-  $template->set_filenames( array('user'=>'admin/user_perm.tpl') );
+  $template->set_filenames(array('user' => 'admin/user_perm.tpl'));
+
+  $base_url = PHPWG_ROOT_PATH.'admin.php?page=';
+  
   $template->assign_vars(array(
     'L_SELECT_USERNAME'=>$lang['Select_username'],
     'L_LOOKUP_USER'=>$lang['Look_up_user'],
@@ -76,54 +113,54 @@ if ( empty($userdata))
     'L_AUTH_USER'=>$lang['permuser_only_private'],
     'L_SUBMIT'=>$lang['submit'],
 
-    'F_SEARCH_USER_ACTION' => add_session_id(PHPWG_ROOT_PATH.'admin.php?page=user_perm'),
+    'F_SEARCH_USER_ACTION' => add_session_id($base_url.'user_perm'),
     'U_SEARCH_USER' => add_session_id(PHPWG_ROOT_PATH.'admin/search.php')
     ));
 }
 else
 {
-  $cat_url = '<a href="'.add_session_id(PHPWG_ROOT_PATH.'admin.php?page=cat_options&section=status');
-  $cat_url .= '">'.$lang['permuser_info_link'].'</a>';
-  $template->set_filenames( array('user'=>'admin/cat_options.tpl') );
-  $template->assign_vars(array(
-    'L_RESET'=>$lang['reset'],
-    'L_CAT_OPTIONS_TRUE'=>$lang['authorized'],
-    'L_CAT_OPTIONS_FALSE'=>$lang['forbidden'],
-    'L_CAT_OPTIONS_INFO'=>$lang['permuser_info'].'&nbsp;'.$cat_url,
-	
-	'HIDDEN_NAME'=> 'userid',
-	'HIDDEN_VALUE'=>$userdata['id'],
-    'F_ACTION' => add_session_id(PHPWG_ROOT_PATH.'admin.php?page=user_perm'),
-    ));
-
+  $template->set_filenames(array('user'=>'admin/cat_options.tpl'));
+  $template->assign_vars(
+    array(
+      'L_RESET'=>$lang['reset'],
+      'L_CAT_OPTIONS_TRUE'=>$lang['authorized'],
+      'L_CAT_OPTIONS_FALSE'=>$lang['forbidden'],
+      'L_CAT_OPTIONS_INFO'=>$lang['permuser_info'],
+      
+      'HIDDEN_NAME'=> 'userid',
+      'HIDDEN_VALUE'=>$userdata['id'],
+      'F_ACTION' => add_session_id(PHPWG_ROOT_PATH.'admin.php?page=user_perm'),
+      ));
 
   // only private categories are listed
-  $query_true = 'SELECT id,name,uppercats,global_rank FROM '.CATEGORIES_TABLE;
-  $query_true.= ' LEFT JOIN '.USER_ACCESS_TABLE.' as u';
-  $query_true.= ' ON u.cat_id=id';
-  $query_true.= ' WHERE status = \'private\' AND u.user_id='.$userdata['id'].';';
+  $query_true = '
+SELECT id,name,uppercats,global_rank
+  FROM '.CATEGORIES_TABLE.' INNER JOIN '.USER_ACCESS_TABLE.' ON cat_id = id
+  WHERE status = \'private\'
+    AND user_id = '.$userdata['id'].'
+;';
+  display_select_cat_wrapper($query_true,array(),'category_option_true');
+  
   $result = pwg_query($query_true);
-  $categorie_true = array();
-  while (!empty($result) && $row = mysql_fetch_array($result))
+  $authorized_ids = array();
+  while ($row = mysql_fetch_array($result))
   {
-    array_push($categorie_true, $row);
+    array_push($authorized_ids, $row['id']);
   }
   
-  $query = 'SELECT id,name,uppercats,global_rank FROM '.CATEGORIES_TABLE;
-  $query.= ' WHERE status = \'private\'';
-  $result = pwg_query($query);
-  $categorie_false = array();
-  while ($row = mysql_fetch_array($result))
+  $query_false = '
+SELECT id,name,uppercats,global_rank
+  FROM '.CATEGORIES_TABLE.'
+  WHERE status = \'private\'';
+  if (count($authorized_ids) > 0)
   {
-    if (!in_array($row,$categorie_true))
-	  array_push($categorie_false, $row);
+    $query_false.= '
+    AND id NOT IN ('.implode(',', $authorized_ids).')';
   }
-  usort($categorie_true, 'global_rank_compare');
-  usort($categorie_false, 'global_rank_compare');
-  display_select_categories($categorie_true, array(), 'category_option_true', true);
-  display_select_categories($categorie_false, array(), 'category_option_false', true);
+  $query_false.= '
+;';
+  display_select_cat_wrapper($query_false,array(),'category_option_false');
 }
-
 //----------------------------------------------------------- sending html code
 $template->assign_var_from_handle('ADMIN_CONTENT', 'user');
 ?>
diff --git a/category.php b/category.php
index 581b4055d..792d11ef0 100644
--- a/category.php
+++ b/category.php
@@ -102,13 +102,17 @@ include(PHPWG_ROOT_PATH.'include/page_header.php');
 
 $template->set_filenames( array('category'=>'category.tpl') );
 //-------------------------------------------------------------- category title
-if ( !isset( $page['title'] ) )
+if (!isset($page['cat']))
 {
-  $page['title'] = $lang['no_category'];
+  $template_title = $lang['no_category'];
 }
-$template_title = get_cat_display_name($page['cat_name'],
-                             'category.php?cat=',
-                             false);;
+else
+{
+  $template_title = get_cat_display_name($page['cat_name'],
+                                         'category.php?cat=',
+                                         false);
+}
+
 if ( isset( $page['cat_nb_images'] ) and $page['cat_nb_images'] > 0 )
 {
   $template_title.= ' ['.$page['cat_nb_images'].']';
diff --git a/include/functions_category.inc.php b/include/functions_category.inc.php
index 1c04c70d2..287075d43 100644
--- a/include/functions_category.inc.php
+++ b/include/functions_category.inc.php
@@ -714,7 +714,7 @@ SELECT COUNT(1) AS count
   }
   else
   {
-    $page['title'] = $lang['diapo_default_page_title'];
+    $page['title'] = $lang['no_category'];
   }
   pwg_debug( 'end initialize_category' );
 }
@@ -763,10 +763,10 @@ function display_select_cat_wrapper($query, $selecteds, $blockname,
   $categories = array();
   if (!empty($result))
   {
-  while ($row = mysql_fetch_array($result))
-  {
-    array_push($categories, $row);
-  }
+    while ($row = mysql_fetch_array($result))
+    {
+      array_push($categories, $row);
+    }
   }
   usort($categories, 'global_rank_compare');
   display_select_categories($categories, $selecteds, $blockname, $fullname);
diff --git a/include/user.inc.php b/include/user.inc.php
index 468eca3f0..635d77fdb 100644
--- a/include/user.inc.php
+++ b/include/user.inc.php
@@ -120,12 +120,16 @@ if ($user['is_the_guest'])
 }
 
 // if no information were found about user in user_forbidden table OR the
-// forbidden categories must be updated
-if (!isset($user['need_update'])
-    or !is_bool($user['need_update'])
-    or $user['need_update'] == true)
+// forbidden categories must be updated : only if current user is in public
+// part
+if (!defined('IN_ADMIN') or !IN_ADMIN)
 {
-  $user['forbidden_categories'] = calculate_permissions($user['id']);
+  if (!isset($user['need_update'])
+      or !is_bool($user['need_update'])
+      or $user['need_update'] == true)
+  {
+    $user['forbidden_categories'] = calculate_permissions($user['id']);
+  }
 }
 
 // forbidden_categories is a must be empty, at least
diff --git a/language/en_UK.iso-8859-1/admin.lang.php b/language/en_UK.iso-8859-1/admin.lang.php
index ff385e19d..c8ddc487e 100644
--- a/language/en_UK.iso-8859-1/admin.lang.php
+++ b/language/en_UK.iso-8859-1/admin.lang.php
@@ -302,6 +302,7 @@ $lang['user_status_guest'] = 'User';
 $lang['user_delete'] = 'Delete user';
 $lang['user_delete_hint'] = 'Click here to delete this user. Warning! This operation cannot be undone!';
 $lang['permuser_only_private'] = 'Only private categories are shown';
+$lang['permuser_info'] = 'Only private categories are listed. Private/Public category status can be set in screen "Categories &gt; Public / Private"';
 
 // Groups
 $lang['group_confirm_delete']= 'Confirm group deletion';
diff --git a/language/en_UK.iso-8859-1/common.lang.php b/language/en_UK.iso-8859-1/common.lang.php
index 9d4c3e3e1..45383d7ce 100644
--- a/language/en_UK.iso-8859-1/common.lang.php
+++ b/language/en_UK.iso-8859-1/common.lang.php
@@ -222,7 +222,7 @@ $lang['about_page_title'] = 'About PhpWebGallery';
 $lang['about_title'] = 'About...';
 $lang['about_message'] = '<div style="text-align:center;font-weigh:bold;">Information about PhpWebGallery</div>
 <ul>
-  <li>This website uses the version '.PHPWG_VERSION.' of "<a href="htt://www.phpwebgallery.net" style="text-decoration:underline">PhpWebGallery</a>. PhpWebGallery is a web application giving you the possibility to create an online images gallery easily.</li>
+  <li>This website uses the version '.PHPWG_VERSION.' of <a href="htt://www.phpwebgallery.net" style="text-decoration:underline">PhpWebGallery</a>. PhpWebGallery is a web application giving you the possibility to create an online images gallery easily.</li>
   <li>Technicaly, PhpWebGallery is fully developped with PHP (the elePHPant) with a MySQL database (the SQuirreL).</li>
   <li>If you have any suggestions or comments, please visit <a href="http://www.phpwebgallery.net" style="text-decoration:underline">PhpWebGallery</a> official site, and its dedicated <a href="http://forum.phpwebgallery.net" style="text-decoration:underline">forum</a>.</li>
 </ul>';
diff --git a/language/fr_FR.iso-8859-1/admin.lang.php b/language/fr_FR.iso-8859-1/admin.lang.php
index 16afa39b6..7f49d4cd4 100644
--- a/language/fr_FR.iso-8859-1/admin.lang.php
+++ b/language/fr_FR.iso-8859-1/admin.lang.php
@@ -306,8 +306,7 @@ $lang['user_status_admin'] = 'Administrateur';
 $lang['user_status_guest'] = 'Utilisateur';
 $lang['user_delete'] = 'Supprimer l\'utilisateur';
 $lang['user_delete_hint'] = 'Cliquez ici pour supprimer définitivement l\'utilisateur. Attention cette opération ne pourra être rétablie.';
-$lang['permuser_info'] = 'Seules les catégories déclarées en privée sont affichées. Cliquez ici pour y accéder : ';
-$lang['permuser_info_link'] = 'Sécurité des catégories';
+$lang['permuser_info'] = 'Seules les catégories déclarées en privée sont affichées. Le status privé/public des catégories est configurable dans l\'écran "Catégories &gt; Sécurité" de l\'administration.';
 $lang['permuser_only_private'] = 'Seules les catégories privées sont représentées';
 
 // Groups