Dokuwiki module for Elgg 1.7

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diff --git a/lib/dokuwiki/conf/mysql.conf.php.example b/lib/dokuwiki/conf/mysql.conf.php.example
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+<?php
+/*
+ * This is an example configuration for the mysql auth module.
+ *
+ * This SQL statements are optimized for following table structure.
+ * If you use a different one you have to change them accordingly.
+ * See comments of every statement for details.
+ *
+ * TABLE users
+ *     uid   login   pass   firstname   lastname   email
+ *	  
+ * TABLE groups
+ *     gid   name
+ *	  
+ * TABLE usergroup
+ *     uid   gid
+ * 
+ * To use this configuration you have to copy them to local.php
+ * or at least include this file in local.php.
+ */
+
+/* Options to configure database access. You need to set up this
+ * options carefully, otherwise you won't be able to access you
+ * database.
+ */
+$conf['auth']['mysql']['server']   = '';
+$conf['auth']['mysql']['user']     = '';
+$conf['auth']['mysql']['password'] = '';
+$conf['auth']['mysql']['database'] = '';
+
+/* This option enables debug messages in the mysql module. It is
+ * mostly usefull for system admins.
+ */
+$conf['auth']['mysql']['debug'] = 0;
+
+/* Normally password encryption is done by DokuWiki (recommended) but for
+ * some reasons it might be usefull to let the database do the encryption.
+ * Set 'forwardClearPass' to '1' and the cleartext password is forwarded to
+ * the database, otherwise the encrypted one.
+ */
+$conf['auth']['mysql']['forwardClearPass'] = 0;
+
+/* Multiple table operations will be protected by locks. This array tolds
+ * the module which tables to lock. If you use any aliases for table names
+ * these array must also contain these aliases. Any unamed alias will cause
+ * a warning during operation. See the example below.
+ */
+$conf['auth']['mysql']['TablesToLock']= array("users", "users AS u","groups", "groups AS g", "usergroup", "usergroup AS ug");
+
+/***********************************************************************/
+/*       Basic SQL statements for user authentication (required)       */
+/***********************************************************************/
+
+/* This statement is used to grant or deny access to the wiki. The result
+ * should be a table with exact one line containing at least the password
+ * of the user. If the result table is empty or contains more than one
+ * row, access will be denied.
+ *
+ * The module access the password as 'pass' so a alias might be necessary.
+ *
+ * Following patters will be replaced:
+ *   %{user}	user name
+ *   %{pass}	encrypted or clear text password (depends on 'encryptPass')
+ *   %{dgroup}	default group name 
+ */
+$conf['auth']['mysql']['checkPass']   = "SELECT pass
+                                         FROM usergroup AS ug
+                                         JOIN users AS u ON u.uid=ug.uid
+                                         JOIN groups AS g ON g.gid=ug.gid
+                                         WHERE login='%{user}'
+                                         AND name='%{dgroup}'";
+
+/* This statement should return a table with exact one row containing
+ * information about one user. The field needed are:
+ * 'pass'  containing the encrypted or clear text password
+ * 'name'  the user's full name
+ * 'mail'  the user's email address
+ *
+ * Keep in mind that Dokuwiki will access thise information through the
+ * names listed above so aliasses might be neseccary.
+ *
+ * Following patters will be replaced:
+ *   %{user}	user name
+ */
+$conf['auth']['mysql']['getUserInfo'] = "SELECT pass, CONCAT(firstname,' ',lastname) AS name, email AS mail
+                                         FROM users
+                                         WHERE login='%{user}'";
+
+/* This statement is used to get all groups a user is member of. The
+ * result should be a table containing all groups the given user is
+ * member of. The module access the group name as 'group' so a alias
+ * might be nessecary.
+ *
+ * Following patters will be replaced:
+ *   %{user}	user name
+ */
+$conf['auth']['mysql']['getGroups']   = "SELECT name as `group`
+                                         FROM groups g, users u, usergroup ug
+                                         WHERE u.uid = ug.uid
+                                         AND g.gid = ug.gid
+                                         AND u.login='%{user}'";
+
+/***********************************************************************/
+/*      Additional minimum SQL statements to use the user manager      */
+/***********************************************************************/
+
+/* This statement should return a table containing all user login names
+ * that meet certain filter criteria. The filter expressions will be added
+ * case dependend by the module. At the end a sort expression will be added.
+ * Important is that this list contains no double entries fo a user. Each
+ * user name is only allowed once in the table.
+ *
+ * The login name will be accessed as 'user' to a alias might be neseccary.
+ * No patterns will be replaced in this statement but following patters
+ * will be replaced in the filter expressions:
+ *   %{user}	in FilterLogin  user's login name
+ *   %{name}	in FilterName   user's full name
+ *   %{email}	in FilterEmail  user's email address
+ *   %{group}	in FilterGroup  group name
+ */
+$conf['auth']['mysql']['getUsers']    = "SELECT DISTINCT login AS user
+                                         FROM users AS u 
+                                         LEFT JOIN usergroup AS ug ON u.uid=ug.uid
+                                         LEFT JOIN groups AS g ON ug.gid=g.gid";
+$conf['auth']['mysql']['FilterLogin'] = "login LIKE '%{user}'";
+$conf['auth']['mysql']['FilterName']  = "CONCAT(firstname,' ',lastname) LIKE '%{name}'";
+$conf['auth']['mysql']['FilterEmail'] = "email LIKE '%{email}'";
+$conf['auth']['mysql']['FilterGroup'] = "name LIKE '%{group}'";
+$conf['auth']['mysql']['SortOrder']   = "ORDER BY login";
+
+/***********************************************************************/
+/*   Additional SQL statements to add new users with the user manager  */
+/***********************************************************************/
+
+/* This statement should add a user to the database. Minimum information
+ * to store are: login name, password, email address and full name.
+ *
+ * Following patterns will be replaced:
+ *   %{user}	user's login name
+ *   %{pass}	password (encrypted or clear text, depends on 'encryptPass')
+ *   %{email}	email address
+ *   %{name}	user's full name
+ */ 
+$conf['auth']['mysql']['addUser']     = "INSERT INTO users
+                                         (login, pass, email, firstname, lastname)
+                                         VALUES ('%{user}', '%{pass}', '%{email}',
+                                         SUBSTRING_INDEX('%{name}',' ', 1),
+                                         SUBSTRING_INDEX('%{name}',' ', -1))";
+
+/* This statement should add a group to the database.
+ * Following patterns will be replaced:
+ *   %{group}	group name
+ */
+$conf['auth']['mysql']['addGroup']    = "INSERT INTO groups (name)
+                                         VALUES ('%{group}')";
+
+/* This statement should connect a user to a group (a user become member
+ * of that group).
+ * Following patterns will be replaced:
+ *   %{user}	user's login name
+ *   %{uid}		id of a user dataset
+ *   %{group}	group name
+ *   %{gid}		id of a group dataset
+ */
+$conf['auth']['mysql']['addUserGroup']= "INSERT INTO usergroup (uid, gid)
+                                         VALUES ('%{uid}', '%{gid}')";
+
+/* This statement should remove a group fom the database.
+ * Following patterns will be replaced:
+ *   %{group}	group name
+ *   %{gid}		id of a group dataset
+ */
+$conf['auth']['mysql']['delGroup']    = "DELETE FROM groups
+                                         WHERE gid='%{gid}'";
+
+/* This statement should return the database index of a given user name.
+ * The module will access the index with the name 'id' so a alias might be
+ * necessary.
+ * following patters will be replaced:
+ *   %{user}	user name 
+ */
+$conf['auth']['mysql']['getUserID']   = "SELECT uid AS id
+                                         FROM users
+                                         WHERE login='%{user}'";
+
+/***********************************************************************/
+/*   Additional SQL statements to delete users with the user manager   */
+/***********************************************************************/
+
+/* This statement should remove a user fom the database.
+ * Following patterns will be replaced:
+ *   %{user}	user's login name
+ *   %{uid}		id of a user dataset
+ */
+$conf['auth']['mysql']['delUser']     = "DELETE FROM users
+                                         WHERE uid='%{uid}'";
+
+/* This statement should remove all connections from a user to any group
+ * (a user quits membership of all groups).
+ * Following patterns will be replaced:
+ *   %{uid}		id of a user dataset
+ */
+$conf['auth']['mysql']['delUserRefs'] = "DELETE FROM usergroup
+                                         WHERE uid='%{uid}'";
+
+/***********************************************************************/
+/*   Additional SQL statements to modify users with the user manager   */
+/***********************************************************************/
+
+/* This statements should modify a user entry in the database. The
+ * statements UpdateLogin, UpdatePass, UpdateEmail and UpdateName will be
+ * added to updateUser on demand. Only changed parameters will be used.
+ *
+ * Following patterns will be replaced:
+ *   %{user}	user's login name
+ *   %{pass}	password (encrypted or clear text, depends on 'encryptPass')
+ *   %{email}	email address
+ *   %{name}	user's full name
+ *   %{uid}     user id that should be updated
+ */ 
+$conf['auth']['mysql']['updateUser']  = "UPDATE users SET";
+$conf['auth']['mysql']['UpdateLogin'] = "login='%{user}'";
+$conf['auth']['mysql']['UpdatePass']  = "pass='%{pass}'";
+$conf['auth']['mysql']['UpdateEmail'] = "email='%{email}'";
+$conf['auth']['mysql']['UpdateName']  = "firstname=SUBSTRING_INDEX('%{name}',' ', 1),
+                                         lastname=SUBSTRING_INDEX('%{name}',' ', -1)";
+$conf['auth']['mysql']['UpdateTarget']= "WHERE uid=%{uid}";
+
+/* This statement should remove a single connection from a user to a
+ * group (a user quits membership of that group).
+ *
+ * Following patterns will be replaced:
+ *   %{user}	user's login name
+ *   %{uid}		id of a user dataset
+ *   %{group}	group name
+ *   %{gid}		id of a group dataset
+ */
+$conf['auth']['mysql']['delUserGroup']= "DELETE FROM usergroup
+                                         WHERE uid='%{uid}'
+                                         AND gid='%{gid}'";
+
+/* This statement should return the database index of a given group name.
+ * The module will access the index with the name 'id' so a alias might
+ * be necessary.
+ *
+ * Following patters will be replaced:
+ *   %{group}	group name 
+ */
+$conf['auth']['mysql']['getGroupID']  = "SELECT gid AS id
+                                         FROM groups
+                                         WHERE name='%{group}'";
+
+