gnu-social/lib/common.php

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<?php
/*
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* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2008, 2009, StatusNet, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
//exit with 200 response, if this is checking fancy from the installer
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if (isset($_REQUEST['p']) && $_REQUEST['p'] == 'check-fancy') { exit; }
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define('STATUSNET_VERSION', '0.9.0rc2');
define('LACONICA_VERSION', STATUSNET_VERSION); // compatibility
define('STATUSNET_CODENAME', 'Stand');
define('AVATAR_PROFILE_SIZE', 96);
define('AVATAR_STREAM_SIZE', 48);
define('AVATAR_MINI_SIZE', 24);
define('NOTICES_PER_PAGE', 20);
define('PROFILES_PER_PAGE', 20);
define('FOREIGN_NOTICE_SEND', 1);
define('FOREIGN_NOTICE_RECV', 2);
define('FOREIGN_NOTICE_SEND_REPLY', 4);
define('FOREIGN_FRIEND_SEND', 1);
define('FOREIGN_FRIEND_RECV', 2);
# append our extlib dir as the last-resort place to find libs
set_include_path(get_include_path() . PATH_SEPARATOR . INSTALLDIR . '/extlib/');
# To protect against upstream libraries which haven't updated
# for PHP 5.3 where dl() function may not be present...
if (!function_exists('dl')) {
function dl($library) {
return false;
}
}
# global configuration object
require_once('PEAR.php');
require_once('DB/DataObject.php');
require_once('DB/DataObject/Cast.php'); # for dates
require_once(INSTALLDIR.'/lib/language.php');
// This gets included before the config file, so that admin code and plugins
// can use it
require_once(INSTALLDIR.'/lib/event.php');
require_once(INSTALLDIR.'/lib/plugin.php');
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function _sn_to_path($sn)
{
$past_root = substr($sn, 1);
$last_slash = strrpos($past_root, '/');
if ($last_slash > 0) {
$p = substr($past_root, 0, $last_slash);
} else {
$p = '';
}
return $p;
}
// Save our sanity when code gets loaded through subroutines such as PHPUnit tests
global $default, $config, $_server, $_path;
// try to figure out where we are. $server and $path
// can be set by including module, else we guess based
// on HTTP info.
if (isset($server)) {
$_server = $server;
} else {
$_server = array_key_exists('SERVER_NAME', $_SERVER) ?
strtolower($_SERVER['SERVER_NAME']) :
null;
}
if (isset($path)) {
$_path = $path;
} else {
$_path = (array_key_exists('SERVER_NAME', $_SERVER) && array_key_exists('SCRIPT_NAME', $_SERVER)) ?
_sn_to_path($_SERVER['SCRIPT_NAME']) :
null;
}
require_once(INSTALLDIR.'/lib/default.php');
// Set config values initially to default values
$config = $default;
// default configuration, overwritten in config.php
$config['db'] = &PEAR::getStaticProperty('DB_DataObject','options');
$config['db'] = $default['db'];
// Backward compatibility
$config['site']['design'] =& $config['design'];
if (function_exists('date_default_timezone_set')) {
/* Work internally in UTC */
date_default_timezone_set('UTC');
}
function addPlugin($name, $attrs = null)
{
$name = ucfirst($name);
$pluginclass = "{$name}Plugin";
if (!class_exists($pluginclass)) {
$files = array("local/plugins/{$pluginclass}.php",
"local/plugins/{$name}/{$pluginclass}.php",
"local/{$pluginclass}.php",
"local/{$name}/{$pluginclass}.php",
"plugins/{$pluginclass}.php",
"plugins/{$name}/{$pluginclass}.php");
foreach ($files as $file) {
$fullpath = INSTALLDIR.'/'.$file;
if (@file_exists($fullpath)) {
include_once($fullpath);
break;
}
}
}
$inst = new $pluginclass();
if (!empty($attrs)) {
foreach ($attrs as $aname => $avalue) {
$inst->$aname = $avalue;
}
}
return $inst;
}
// From most general to most specific:
// server-wide, then vhost-wide, then for a path,
// finally for a dir (usually only need one of the last two).
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if (isset($conffile)) {
$_config_files = array($conffile);
} else {
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$_config_files = array('/etc/statusnet/statusnet.php',
'/etc/statusnet/laconica.php',
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'/etc/laconica/laconica.php',
'/etc/statusnet/'.$_server.'.php',
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'/etc/laconica/'.$_server.'.php');
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if (strlen($_path) > 0) {
$_config_files[] = '/etc/statusnet/'.$_server.'_'.$_path.'.php';
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$_config_files[] = '/etc/laconica/'.$_server.'_'.$_path.'.php';
}
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$_config_files[] = INSTALLDIR.'/config.php';
}
global $_have_a_config;
$_have_a_config = false;
foreach ($_config_files as $_config_file) {
if (@file_exists($_config_file)) {
include_once($_config_file);
$_have_a_config = true;
}
}
function _have_config()
{
global $_have_a_config;
return $_have_a_config;
}
// XXX: Throw a conniption if database not installed
// XXX: Find a way to use htmlwriter for this instead of handcoded markup
if (!_have_config()) {
echo '<p>'. _('No configuration file found. ') .'</p>';
echo '<p>'. _('I looked for configuration files in the following places: ') .'<br/> '. implode($_config_files, '<br/>');
echo '<p>'. _('You may wish to run the installer to fix this.') .'</p>';
echo '<a href="install.php">'. _('Go to the installer.') .'</a>';
exit;
}
// Fixup for statusnet.ini
$_db_name = substr($config['db']['database'], strrpos($config['db']['database'], '/') + 1);
if ($_db_name != 'statusnet' && !array_key_exists('ini_'.$_db_name, $config['db'])) {
$config['db']['ini_'.$_db_name] = INSTALLDIR.'/classes/statusnet.ini';
}
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// Backwards compatibility
if (array_key_exists('memcached', $config)) {
if ($config['memcached']['enabled']) {
addPlugin('Memcache', array('servers' => $config['memcached']['server']));
}
if (!empty($config['memcached']['base'])) {
$config['cache']['base'] = $config['memcached']['base'];
}
}
function __autoload($cls)
{
if (file_exists(INSTALLDIR.'/classes/' . $cls . '.php')) {
require_once(INSTALLDIR.'/classes/' . $cls . '.php');
} else if (file_exists(INSTALLDIR.'/lib/' . strtolower($cls) . '.php')) {
require_once(INSTALLDIR.'/lib/' . strtolower($cls) . '.php');
} else if (mb_substr($cls, -6) == 'Action' &&
file_exists(INSTALLDIR.'/actions/' . strtolower(mb_substr($cls, 0, -6)) . '.php')) {
require_once(INSTALLDIR.'/actions/' . strtolower(mb_substr($cls, 0, -6)) . '.php');
} else if ($cls == 'OAuthRequest') {
require_once('OAuth.php');
} else {
Event::handle('Autoload', array(&$cls));
}
}
// XXX: how many of these could be auto-loaded on use?
// XXX: note that these files should not use config options
// at compile time since DB config options are not yet loaded.
require_once 'Validate.php';
require_once 'markdown.php';
require_once INSTALLDIR.'/lib/util.php';
require_once INSTALLDIR.'/lib/action.php';
require_once INSTALLDIR.'/lib/mail.php';
require_once INSTALLDIR.'/lib/subs.php';
require_once INSTALLDIR.'/lib/clientexception.php';
require_once INSTALLDIR.'/lib/serverexception.php';
// Load settings from database; note we need autoload for this
Config::loadSettings();
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// XXX: if plugins should check the schema at runtime, do that here.
if ($config['db']['schemacheck'] == 'runtime') {
Event::handle('CheckSchema');
}
// XXX: other formats here
define('NICKNAME_FMT', VALIDATE_NUM.VALIDATE_ALPHA_LOWER);
// Give plugins a chance to initialize in a fully-prepared environment
Event::handle('InitializePlugin');