| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * plugin.php |
| 5 | * |
| 6 | * Copyright (c) 1999-2001 The Squirrelmail Development Team |
| 7 | * Licensed under the GNU GPL. For full terms see the file COPYING. |
| 8 | * |
| 9 | * This file provides the framework for a plugin architecture. |
| 10 | * |
| 11 | * Documentation on how to write plugins might show up some time. |
| 12 | * |
| 13 | * $Id$ |
| 14 | */ |
| 15 | |
| 16 | global $squirrelmail_plugin_hooks; |
| 17 | |
| 18 | $squirrelmail_plugin_hooks = array(); |
| 19 | |
| 20 | // This function adds a plugin |
| 21 | function use_plugin ($name) { |
| 22 | |
| 23 | if (file_exists('../plugins/'.$name.'/setup.php')) { |
| 24 | include_once('../plugins/'.$name.'/setup.php'); |
| 25 | $function = 'squirrelmail_plugin_init_'.$name; |
| 26 | if (function_exists($function)) { |
| 27 | $function(); |
| 28 | } |
| 29 | } |
| 30 | |
| 31 | } |
| 32 | |
| 33 | // This function executes a hook |
| 34 | function do_hook ($name) { |
| 35 | global $squirrelmail_plugin_hooks; |
| 36 | $Data = func_get_args(); |
| 37 | if (isset($squirrelmail_plugin_hooks[$name]) && |
| 38 | is_array($squirrelmail_plugin_hooks[$name])) { |
| 39 | foreach ($squirrelmail_plugin_hooks[$name] as $function) { |
| 40 | // Add something to set correct gettext domain for plugin |
| 41 | if (function_exists($function)) { |
| 42 | $function($Data); |
| 43 | } |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | // Variable-length argument lists have a slight problem when |
| 48 | // passing values by reference. Pity. This is a workaround. |
| 49 | return $Data; |
| 50 | } |
| 51 | |
| 52 | /* -------------------- MAIN --------------------- */ |
| 53 | |
| 54 | // On startup, register all plugins configured for use |
| 55 | if (isset($plugins) && is_array($plugins)) { |
| 56 | foreach ($plugins as $name) { |
| 57 | use_plugin($name); |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | ?> |