- new : external authentication in another users table. Previous users table

  is divided between users (common properties with any web application) and
  user_infos (phpwebgallery specific informations). External table and
  fields can be configured.

- modification : profile.php is not reachable through administration anymore
  (not useful).

- modification : in profile.php, current password is mandatory only if user
  tries to change his password. Username can't be changed.

- deletion : of obsolete functions get_user_restrictions,
  update_user_restrictions, get_user_all_restrictions, is_user_allowed,
  update_user

- modification : $user['forbidden_categories'] equals at least "-1" so that
  category_id NOT IN ($user['forbidden_categories']) can always be used.

- modification : user_forbidden table becomes user_cache so that not only
  restriction informations can be stored in this table.


git-svn-id: http://piwigo.org/svn/trunk@808 68402e56-0260-453c-a942-63ccdbb3a9ee

4 files changed, 117 insertions, 189 deletions

diff --git a/admin/cat_perm.php b/admin/cat_perm.php
index 73bd0d866..7580cd28c 100644
--- a/admin/cat_perm.php
+++ b/admin/cat_perm.php
@@ -258,9 +258,10 @@ foreach (array_diff(array_keys($groups), $group_granted_ids) as $group_id)
 $users = array();
 
 $query = '
-SELECT id, username
+SELECT '.$conf['user_fields']['id'].' AS id,
+       '.$conf['user_fields']['username'].' AS username
   FROM '.USERS_TABLE.'
-  WHERE id != 2
+  WHERE id != '.$conf['guest_id'].'
 ;';
 $result = pwg_query($query);
 while($row = mysql_fetch_array($result))
diff --git a/admin/include/functions.php b/admin/include/functions.php
index a02ab962f..2364ada41 100644
--- a/admin/include/functions.php
+++ b/admin/include/functions.php
@@ -332,6 +332,8 @@ DELETE FROM '.IMAGES_TABLE.'
 //     - calculated permissions linked to the user
 function delete_user($user_id)
 {
+  global $conf;
+  
   // destruction of the access linked to the user
   $query = '
 DELETE FROM '.USER_ACCESS_TABLE.'
@@ -367,10 +369,17 @@ DELETE FROM '.USER_FORBIDDEN_TABLE.'
 ;';
   pwg_query($query);
 
+  // deletion of phpwebgallery specific informations
+  $query = '
+DELETE FROM '.USER_INFOS_TABLE.'
+  WHERE user_id = '.$user_id.'
+;';
+  pwg_query($query);
+
   // destruction of the user
   $query = '
 DELETE FROM '.USERS_TABLE.'
-  WHERE id = '.$user_id.'
+  WHERE '.$conf['user_fields']['id'].' = '.$user_id.'
 ;';
   pwg_query($query);
 }
@@ -553,165 +562,6 @@ function get_keywords( $keywords_string )
 }
 
 /**
- * returns an array with the ids of the restricted categories for the user
- *
- * Returns an array with the ids of the restricted categories for the
- * user. If the $check_invisible parameter is set to true, invisible
- * categorie are added to the restricted one in the array.
- *
- * @param int $user_id
- * @param string $user_status
- * @param bool $check_invisible
- * @param bool $use_groups
- * @return array
- */
-function get_user_restrictions( $user_id, $user_status,
-                                $check_invisible, $use_groups = true )
-{
-  // 1. retrieving ids of private categories
-  $query = 'SELECT id FROM '.CATEGORIES_TABLE;
-  $query.= " WHERE status = 'private'";
-  $query.= ';';
-  $result = pwg_query( $query );
-  $privates = array();
-  while ( $row = mysql_fetch_array( $result ) )
-  {
-    array_push( $privates, $row['id'] );
-  }
-  // 2. retrieving all authorized categories for the user
-  $authorized = array();
-  // 2.1. retrieving authorized categories thanks to personnal user
-  //      authorization
-  $query = 'SELECT cat_id FROM '.USER_ACCESS_TABLE;
-  $query.= ' WHERE user_id = '.$user_id;
-  $query.= ';';
-  $result = pwg_query( $query );
-  while ( $row = mysql_fetch_array( $result ) )
-  {
-    array_push( $authorized, $row['cat_id'] );
-  }
-  // 2.2. retrieving authorized categories thanks to group authorization to
-  //      which the user is a member
-  if ( $use_groups )
-  {
-    $query = 'SELECT ga.cat_id';
-    $query.= ' FROM '.USER_GROUP_TABLE.' as ug';
-    $query.= ', '.GROUP_ACCESS_TABLE.' as ga';
-    $query.= ' WHERE ug.group_id = ga.group_id';
-    $query.= ' AND ug.user_id = '.$user_id;
-    $query.= ';';
-    $result = pwg_query( $query );
-    while ( $row = mysql_fetch_array( $result ) )
-    {
-      array_push( $authorized, $row['cat_id'] );
-    }
-    $authorized = array_unique( $authorized );
-  }
-
-  $forbidden = array();
-  foreach ( $privates as $private ) {
-    if ( !in_array( $private, $authorized ) )
-    {
-      array_push( $forbidden, $private );
-    }
-  }
-
-  if ( $check_invisible )
-  {
-    // 3. adding to the restricted categories, the invisible ones
-    if ( $user_status != 'admin' )
-    {
-      $query = 'SELECT id FROM '.CATEGORIES_TABLE;
-      $query.= " WHERE visible = 'false';";
-      $result = pwg_query( $query );
-      while ( $row = mysql_fetch_array( $result ) )
-      {
-        array_push( $forbidden, $row['id'] );
-      }
-    }
-  }
-  return array_unique( $forbidden );
-}
-
-/**
- * updates the calculated data users.forbidden_categories, it includes
- * sub-categories of the direct forbidden categories
- *
- * @param nt $user_id
- * @return array
- */
-function update_user_restrictions( $user_id )
-{
-  $restrictions = get_user_all_restrictions( $user_id );
-
-  // update the users.forbidden_categories in database
-  $query = 'UPDATE '.USERS_TABLE;
-  $query.= ' SET forbidden_categories = ';
-  if ( count( $restrictions ) > 0 )
-    $query.= "'".implode( ',', $restrictions )."'";
-  else
-    $query.= 'NULL';
-  $query .= ' WHERE id = '.$user_id;
-  $query.= ';';
-  pwg_query( $query );
-
-  return $restrictions;
-}
-
-/**
- * returns all the restricted categories ids including sub-categories
- *
- * @param int $user_id
- * @return array
- */
-function get_user_all_restrictions( $user_id )
-{
-  global $page;
-  
-  $query = 'SELECT status';
-  $query.= ' FROM '.USERS_TABLE;
-  $query.= ' WHERE id = '.$user_id;
-  $query.= ';';
-  $row = mysql_fetch_array( pwg_query( $query ) );
-  
-  $base_restrictions=get_user_restrictions($user_id,$row['status'],true,true);
-
-  $restrictions = $base_restrictions;
-  foreach ( $base_restrictions as $category_id ) {
-    echo $category_id.' is forbidden to user '.$user_id.'<br />';
-    $restrictions =
-      array_merge( $restrictions,
-                   $page['plain_structure'][$category_id]['all_subcats_ids'] );
-  }
-
-  return array_unique( $restrictions );
-}
-
-// The function is_user_allowed returns :
-//      - 0 : if the category is allowed with this $restrictions array
-//      - 1 : if this category is not allowed
-//      - 2 : if an uppercat category is not allowed
-// Note : the restrictions array must represent ONLY direct forbidden
-// categories, not all forbidden categories
-function is_user_allowed( $category_id, $restrictions )
-{
-  if ( in_array( $category_id, $restrictions ) ) return 1;
-
-  $query = 'SELECT uppercats';
-  $query.= ' FROM '.CATEGORIES_TABLE;
-  $query.= ' WHERE id = '.$category_id;
-  $query.= ';';
-  $row = mysql_fetch_array( pwg_query( $query ) );
-  $uppercats = explode( ',', $row['uppercats'] );
-  foreach ( $uppercats as $category_id ) {
-    if ( in_array( $category_id, $restrictions ) ) return 2;
-  }
-
-  // no restriction found : the user is allowed to access this category
-  return 0;
-}
-
-/**
  * returns an array containing sub-directories which can be a category
  *
  * directories nammed "thumbnail", "pwg_high" or "pwg_representative" are
@@ -842,8 +692,8 @@ function mass_updates($tablename, $dbfields, $datas)
   // depending on the MySQL version, we use the multi table update or N
   // update queries
   $query = 'SELECT VERSION() AS version;';
-  $row = mysql_fetch_array(pwg_query($query));
-  if (count($datas) < 10 or version_compare($row['version'],'4.0.4') < 0)
+  list($mysql_version) = mysql_fetch_array(pwg_query($query));
+  if (count($datas) < 10 or version_compare($mysql_version, '4.0.4') < 0)
   {
     // MySQL is prior to version 4.0.4, multi table update feature is not
     // available
@@ -1334,4 +1184,73 @@ function micro_seconds()
   $t2 = $t1[1].substr($t2[1], 0, 6);
   return $t2;
 }
+
+/**
+ * compares and synchronizes USERS_TABLE and USER_INFOS_TABLE : each user in
+ * USERS_TABLE must be present in USER_INFOS_TABLE.
+ */
+function sync_users()
+{
+  global $conf;
+  
+  $query = '
+SELECT '.$conf['user_fields']['id'].' AS id
+  FROM '.USERS_TABLE.'
+;';
+  $base_users = array_from_query($query, 'id');
+
+  $query = '
+SELECT user_id
+  FROM '.USER_INFOS_TABLE.'
+;';
+  $infos_users = array_from_query($query, 'user_id');
+
+  // users present in $base_users and not in $infos_users must be added
+  $to_create = array_diff($base_users, $infos_users);
+
+  if (count($to_create) > 0)
+  {
+    $inserts = array();
+
+    list($dbnow) = mysql_fetch_row(pwg_query('SELECT NOW();'));
+
+    foreach ($to_create as $user_id)
+    {
+      $insert = array();
+      $insert['user_id'] = $user_id;
+      $insert['status'] = 'guest';
+      $insert['template'] = $conf['default_template'];
+      $insert['nb_image_line'] = $conf['nb_image_line'];
+      $insert['nb_line_page'] = $conf['nb_line_page'];
+      $insert['language'] = $conf['default_language'];
+      $insert['recent_period'] = $conf['recent_period'];
+      $insert['feed_id'] = find_available_feed_id();
+      $insert['expand'] = boolean_to_string($conf['auto_expand']);
+      $insert['show_nb_comments'] =
+        boolean_to_string($conf['show_nb_comments']);
+      $insert['maxwidth'] = $conf['default_maxwidth'];
+      $insert['maxheight'] = $conf['default_maxheight'];
+      $insert['registration_date'] = $dbnow;
+
+      array_push($inserts, $insert);
+    }
+
+    mass_inserts(USER_INFOS_TABLE,
+                 array_keys($inserts[0]),
+                 $inserts);
+  }
+
+  // users present in $infos_users and not in $base_users must be deleted
+  $to_delete = array_diff($infos_users, $base_users);
+
+  if (count($to_delete) > 0)
+  {
+    $query = '
+DELETE
+  FROM '.USER_INFOS_TABLE.'
+  WHERE user_id in ('.implode(',', $to_delete).')
+;';
+    pwg_query($query);
+  } 
+}
 ?>
diff --git a/admin/search.php b/admin/search.php
index e6eab6258..482d6afbc 100644
--- a/admin/search.php
+++ b/admin/search.php
@@ -73,7 +73,7 @@ if ( !empty($search_match) )
   $sql = "SELECT username 
     FROM " . USERS_TABLE . " 
     WHERE username LIKE '" . str_replace("\'", "''", $username_search) . "' 
-    AND id <> ".ANONYMOUS."
+    AND id <> ".$conf['guest_id']."
 		ORDER BY username";
   if ( !($result = pwg_query($sql)) )
   {
diff --git a/admin/user_list.php b/admin/user_list.php
index 9ffc84e10..aa1bbff22 100644
--- a/admin/user_list.php
+++ b/admin/user_list.php
@@ -45,10 +45,7 @@ include_once(PHPWG_ROOT_PATH.'admin/include/isadmin.inc.php');
 
 if (isset($_POST['submit_add']))
 {
-  $page['errors'] = register_user($_POST['login'],
-                                  $_POST['password'],
-                                  $_POST['password'],
-                                  '');
+  $page['errors'] = register_user($_POST['login'], $_POST['password'], '');
 }
 
 // +-----------------------------------------------------------------------+
@@ -66,7 +63,7 @@ if (isset($_POST['pref_submit']))
       $query = '
 SELECT id
   FROM '.USERS_TABLE.'
-  WHERE id != 2
+  WHERE id != '.$conf['guest_id'].'
 ;';
       $collection = array_from_query($query, 'id');
       break;
@@ -123,7 +120,7 @@ DELETE FROM '.USER_GROUP_TABLE.'
 
     // properties to set for the collection (a user list)
     $datas = array();
-    $dbfields = array('primary' => array('id'), 'update' => array());
+    $dbfields = array('primary' => array('user_id'), 'update' => array());
     
     $formfields =
       array('nb_image_line', 'nb_line_page', 'template', 'language',
@@ -146,7 +143,7 @@ DELETE FROM '.USER_GROUP_TABLE.'
       foreach ($collection as $user_id)
       {
         $data = array();
-        $data['id'] = $user_id;
+        $data['user_id'] = $user_id;
         
         // TODO : verify if submited values are semanticaly correct
         foreach ($dbfields['update'] as $dbfield)
@@ -168,7 +165,7 @@ DELETE FROM '.USER_GROUP_TABLE.'
         array_push($datas, $data);
       }
 
-      mass_updates(USERS_TABLE, $dbfields, $datas);
+      mass_updates(USER_INFOS_TABLE, $dbfields, $datas);
     }
   }
   else
@@ -202,7 +199,7 @@ $template->set_filenames(array('user_list'=>'admin/user_list.tpl'));
 
 $base_url = add_session_id(PHPWG_ROOT_PATH.'admin.php?page=user_list');
 
-$conf['users_page'] = 10;
+$conf['users_page'] = 20;
 
 if (isset($_GET['start']) and is_numeric($_GET['start']))
 {
@@ -317,7 +314,7 @@ $template->assign_block_vars(
     'SELECTED' => ''
     ));
 
-foreach (get_enums(USERS_TABLE, 'status') as $status)
+foreach (get_enums(USER_INFOS_TABLE, 'status') as $status)
 {
   $selected = (isset($_GET['status']) and $_GET['status'] == $status) ?
     'selected="selected"' : '';
@@ -432,7 +429,7 @@ foreach (get_languages() as $language_code => $language_name)
 
 $blockname = 'pref_status_option';
 
-foreach (get_enums(USERS_TABLE, 'status') as $status)
+foreach (get_enums(USER_INFOS_TABLE, 'status') as $status)
 {
   if (isset($_POST['pref_submit']))
   {
@@ -550,7 +547,7 @@ if (isset($_GET['group'])
 }
 
 if (isset($_GET['status'])
-    and in_array($_GET['status'], get_enums(USERS_TABLE, 'status')))
+    and in_array($_GET['status'], get_enums(USER_INFOS_TABLE, 'status')))
 {
   $filter['status'] = $_GET['status'];
 }
@@ -560,23 +557,27 @@ if (isset($_GET['status'])
 // +-----------------------------------------------------------------------+
 
 $query = '
-SELECT COUNT(DISTINCT(id))
-  FROM '.USERS_TABLE.' LEFT JOIN '.USER_GROUP_TABLE.' ON id = user_id
-  WHERE id != 2';
+SELECT COUNT(DISTINCT u.'.$conf['user_fields']['id'].')
+  FROM '.USERS_TABLE.' AS u
+    INNER JOIN '.USER_INFOS_TABLE.' AS ui
+      ON u.'.$conf['user_fields']['id'].' = ui.user_id
+    LEFT JOIN '.USER_GROUP_TABLE.' AS ug
+      ON u.'.$conf['user_fields']['id'].' = ug.user_id
+  WHERE u.'.$conf['user_fields']['id'].' != '.$conf['guest_id'];
 if (isset($filter['username']))
 {
   $query.= '
-    AND username LIKE \''.$filter['username'].'\'';
+  AND u.'.$conf['user_fields']['username'].' LIKE \''.$filter['username'].'\'';
 }
 if (isset($filter['group']))
 {
   $query.= '
-    AND group_id = '.$filter['group'];
+    AND ug.group_id = '.$filter['group'];
 }
 if (isset($filter['status']))
 {
   $query.= '
-    AND status = \''.$filter['status']."'";
+    AND ui.status = \''.$filter['status']."'";
 }
 $query.= '
 ;';
@@ -617,9 +618,16 @@ if (isset($_GET['direction'])
 }
 
 $query = '
-SELECT DISTINCT(id), username, mail_address, status
-  FROM '.USERS_TABLE.' LEFT JOIN '.USER_GROUP_TABLE.' ON id = user_id
-  WHERE id != 2';
+SELECT DISTINCT u.'.$conf['user_fields']['id'].' AS id,
+                u.'.$conf['user_fields']['username'].' AS username,
+                u.'.$conf['user_fields']['email'].' AS email,
+                ui.status
+  FROM '.USERS_TABLE.' AS u
+    INNER JOIN '.USER_INFOS_TABLE.' AS ui
+      ON u.'.$conf['user_fields']['id'].' = ui.user_id
+    LEFT JOIN '.USER_GROUP_TABLE.' AS ug
+      ON u.'.$conf['user_fields']['id'].' = ug.user_id
+  WHERE id != '.$conf['guest_id'];
 if (isset($filter['username']))
 {
   $query.= '
@@ -628,12 +636,12 @@ if (isset($filter['username']))
 if (isset($filter['group']))
 {
   $query.= '
-    AND group_id = '.$filter['group'];
+    AND ug.group_id = '.$filter['group'];
 }
 if (isset($filter['status']))
 {
   $query.= '
-    AND status = \''.$filter['status']."'";
+    AND ui.status = \''.$filter['status']."'";
 }
 $query.= '
   ORDER BY '.$order_by.' '.$direction.'
@@ -687,7 +695,7 @@ SELECT user_id, group_id
         'U_PERM'=>add_session_id($perm_url.$item['id']),
         'USERNAME'=>$item['username'],
         'STATUS'=>$lang['user_status_'.$item['status']],
-        'EMAIL'=>isset($item['mail_address']) ? $item['mail_address'] : '',
+        'EMAIL'=>isset($item['email']) ? $item['email'] : '',
         'GROUPS'=>$groups_string
         ));
   }