Index: masquerade.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/masquerade/masquerade.module,v
retrieving revision 1.13
diff -U3 -r1.13 masquerade.module
--- masquerade.module	9 Jul 2006 16:55:17 -0000	1.13
+++ masquerade.module	14 Oct 2006 06:30:41 -0000
@@ -51,6 +51,64 @@
 }
 
 /**
+ *Block to assist in switching between users
+ *
+ **/
+
+function masquerade_block($op = 'list', $delta = 0, $edit = array()) {
+  if ($op == 'list') {
+    $blocks[0]['info'] = t('User Switching Block');    
+    return $blocks;
+  }
+  else if ($op == 'configure') {    
+  }
+  else if ($op == 'save') {    
+  }
+  else if ($op == 'view') {
+    switch ($delta) {
+      case 0:
+        if(!user_access('masquerade as user') || !user_access('masquerade as admin')) 
+          return;
+        $block['subject'] = t('Switch To User');
+        $block['content'] = _masquerade_getUserSwitchList();
+        break;        
+    }
+    return $block;
+  }
+}
+
+/**
+ * Gets one user from each role logged in user is allowed to switch to
+ *
+ **/
+function _masquerade_getUserSwitchList() {
+  
+  $roles = user_roles();
+  
+  $q = 'SELECT * from users INNER join users_roles on users.uid = users_roles.uid ';
+  if(!user_access('masquerade as admin')) {
+    $admin_roles = variable_get('masquerade_admin_roles',array());
+    foreach($admin_roles as $k => $rid) {
+      if(!$rid)
+      unset($admin_roles[$k]);
+    }    
+    if($admin_roles) {
+      $q .= 'AND rid NOT IN ('. implode(',',$admin_roles) .')';
+    }
+  }
+  
+  $q .= "GROUP BY rid";
+  $ret = db_query($q);
+  while($obj = db_fetch_object($ret)) {    
+    if(!$obj->uid)
+      continue;    
+    $links[] = l($obj->name,'masquerade/switch' . '/'. $obj->uid) . "<br/>" . $roles[$obj->rid];    
+  }
+  return theme_menu_links($links);
+  
+}
+
+/**
  * Implementation of hook_init()
  */
 function masquerade_init() {