3 * StatusNet - the distributed open-source microblogging tool
4 * Copyright (C) 2009-2010 StatusNet, Inc.
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU Affero General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU Affero General Public License for more details.
16 * You should have received a copy of the GNU Affero General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
21 if (!defined('STATUSNET') && !defined('LACONICA')) {
25 global $config, $_server, $_path;
28 * Global configuration setup and management.
32 protected static $have_config;
35 * Configure and instantiate a plugin into the current configuration.
36 * Class definitions will be loaded from standard paths if necessary.
37 * Note that initialization events won't be fired until later.
39 * @param string $name class name & plugin file/subdir name
40 * @param array $attrs key/value pairs of public attributes to set on plugin instance
42 * @throws ServerException if plugin can't be found
44 public static function addPlugin($name, $attrs = null)
46 $name = ucfirst($name);
47 $pluginclass = "{$name}Plugin";
49 if (!class_exists($pluginclass)) {
51 $files = array("local/plugins/{$pluginclass}.php",
52 "local/plugins/{$name}/{$pluginclass}.php",
53 "local/{$pluginclass}.php",
54 "local/{$name}/{$pluginclass}.php",
55 "plugins/{$pluginclass}.php",
56 "plugins/{$name}/{$pluginclass}.php");
58 foreach ($files as $file) {
59 $fullpath = INSTALLDIR.'/'.$file;
60 if (@file_exists($fullpath)) {
61 include_once($fullpath);
65 if (!class_exists($pluginclass)) {
66 throw new ServerException("Plugin $name not found.", 500);
70 $inst = new $pluginclass();
72 foreach ($attrs as $aname => $avalue) {
73 $inst->$aname = $avalue;
80 * Initialize, or re-initialize, StatusNet global configuration
83 * If switching site configurations during script execution, be
84 * careful when working with leftover objects -- global settings
85 * affect many things and they may not behave as you expected.
87 * @param $server optional web server hostname for picking config
88 * @param $path optional URL path for picking config
89 * @param $conffile optional configuration file path
91 * @throws NoConfigException if config file can't be found
93 public static function init($server=null, $path=null, $conffile=null)
95 StatusNet::initDefaults($server, $path);
96 StatusNet::loadConfigFile($conffile);
98 // Load settings from database; note we need autoload for this
99 Config::loadSettings();
105 * Get identifier of the currently active site configuration
108 public static function currentSite()
110 return common_config('site', 'nickname');
114 * Change site configuration to site specified by nickname,
115 * if set up via Status_network. If not, sites other than
116 * the current will fail horribly.
118 * May throw exception or trigger a fatal error if the given
119 * site is missing or configured incorrectly.
121 * @param string $nickname
123 public static function switchSite($nickname)
125 if ($nickname == StatusNet::currentSite()) {
129 $sn = Status_network::staticGet($nickname);
132 throw new Exception("No such site nickname '$nickname'");
135 $server = $sn->getServerName();
136 StatusNet::init($server);
140 * Pull all local sites from status_network table.
142 * Behavior undefined if site is not configured via Status_network.
144 * @return array of nicknames
146 public static function findAllSites()
149 $sn = new Status_network();
151 while ($sn->fetch()) {
152 $sites[] = $sn->nickname;
159 * Fire initialization events for all instantiated plugins.
161 protected static function initPlugins()
163 // Load default plugins
164 foreach (common_config('plugins', 'default') as $name => $params) {
165 if (is_null($params)) {
167 } else if (is_array($params)) {
168 if (count($params) == 0) {
171 $keys = array_keys($params);
172 if (is_string($keys[0])) {
173 addPlugin($name, $params);
175 foreach ($params as $paramset) {
176 addPlugin($name, $paramset);
183 // XXX: if plugins should check the schema at runtime, do that here.
184 if (common_config('db', 'schemacheck') == 'runtime') {
185 Event::handle('CheckSchema');
188 // Give plugins a chance to initialize in a fully-prepared environment
189 Event::handle('InitializePlugin');
193 * Quick-check if configuration has been established.
194 * Useful for functions which may get used partway through
195 * initialization to back off from fancier things.
199 public function haveConfig()
201 return self::$have_config;
205 * Build default configuration array
208 protected static function defaultConfig()
210 global $_server, $_path;
211 require(INSTALLDIR.'/lib/default.php');
216 * Establish default configuration based on given or default server and path
217 * Sets global $_server, $_path, and $config
219 protected static function initDefaults($server, $path)
221 global $_server, $_path, $config;
223 Event::clearHandlers();
225 // try to figure out where we are. $server and $path
226 // can be set by including module, else we guess based
229 if (isset($server)) {
232 $_server = array_key_exists('SERVER_NAME', $_SERVER) ?
233 strtolower($_SERVER['SERVER_NAME']) :
240 $_path = (array_key_exists('SERVER_NAME', $_SERVER) && array_key_exists('SCRIPT_NAME', $_SERVER)) ?
241 self::_sn_to_path($_SERVER['SCRIPT_NAME']) :
245 // Set config values initially to default values
246 $default = self::defaultConfig();
249 // default configuration, overwritten in config.php
250 // Keep DB_DataObject's db config synced to ours...
252 $config['db'] = &PEAR::getStaticProperty('DB_DataObject','options');
254 $config['db'] = $default['db'];
256 // Backward compatibility
258 $config['site']['design'] =& $config['design'];
260 if (function_exists('date_default_timezone_set')) {
261 /* Work internally in UTC */
262 date_default_timezone_set('UTC');
266 protected function _sn_to_path($sn)
268 $past_root = substr($sn, 1);
269 $last_slash = strrpos($past_root, '/');
270 if ($last_slash > 0) {
271 $p = substr($past_root, 0, $last_slash);
279 * Load the default or specified configuration file.
280 * Modifies global $config and may establish plugins.
282 * @throws NoConfigException
284 protected function loadConfigFile($conffile=null)
286 global $_server, $_path, $config;
288 // From most general to most specific:
289 // server-wide, then vhost-wide, then for a path,
290 // finally for a dir (usually only need one of the last two).
292 if (isset($conffile)) {
293 $config_files = array($conffile);
295 $config_files = array('/etc/statusnet/statusnet.php',
296 '/etc/statusnet/laconica.php',
297 '/etc/laconica/laconica.php',
298 '/etc/statusnet/'.$_server.'.php',
299 '/etc/laconica/'.$_server.'.php');
301 if (strlen($_path) > 0) {
302 $config_files[] = '/etc/statusnet/'.$_server.'_'.$_path.'.php';
303 $config_files[] = '/etc/laconica/'.$_server.'_'.$_path.'.php';
306 $config_files[] = INSTALLDIR.'/config.php';
309 self::$have_config = false;
311 foreach ($config_files as $_config_file) {
312 if (@file_exists($_config_file)) {
313 include($_config_file);
314 self::$have_config = true;
318 if (!self::$have_config) {
319 throw new NoConfigException("No configuration file found.",
323 // Fixup for statusnet.ini
324 $_db_name = substr($config['db']['database'], strrpos($config['db']['database'], '/') + 1);
326 if ($_db_name != 'statusnet' && !array_key_exists('ini_'.$_db_name, $config['db'])) {
327 $config['db']['ini_'.$_db_name] = INSTALLDIR.'/classes/statusnet.ini';
330 // Backwards compatibility
332 if (array_key_exists('memcached', $config)) {
333 if ($config['memcached']['enabled']) {
334 addPlugin('Memcache', array('servers' => $config['memcached']['server']));
337 if (!empty($config['memcached']['base'])) {
338 $config['cache']['base'] = $config['memcached']['base'];
344 class NoConfigException extends Exception
346 public $config_files;
348 function __construct($msg, $config_files) {
349 parent::__construct($msg);
350 $this->config_files = $config_files;