gnu-social/index.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/>.
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*
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* @category StatusNet
* @package StatusNet
* @author Brenda Wallace <shiny@cpan.org>
* @author Christopher Vollick <psycotica0@gmail.com>
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* @author CiaranG <ciaran@ciarang.com>
* @author Craig Andrews <candrews@integralblue.com>
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* @author Evan Prodromou <evan@controlezvous.ca>
* @author Gina Haeussge <osd@foosel.net>
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* @author Jeffery To <jeffery.to@gmail.com>
* @author Mike Cochrane <mikec@mikenz.geek.nz>
* @author Robin Millette <millette@controlyourself.ca>
* @author Sarven Capadisli <csarven@controlyourself.ca>
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* @author Tom Adams <tom@holizz.com>
*
* @license GNU Affero General Public License http://www.gnu.org/licenses/
*/
define('INSTALLDIR', dirname(__FILE__));
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define('STATUSNET', true);
define('LACONICA', true); // compatibility
require_once INSTALLDIR . '/lib/common.php';
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$user = null;
$action = null;
function getPath($req)
{
if ((common_config('site', 'fancy') || !array_key_exists('PATH_INFO', $_SERVER))
&& array_key_exists('p', $req)
) {
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return $req['p'];
} else if (array_key_exists('PATH_INFO', $_SERVER)) {
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return $_SERVER['PATH_INFO'];
} else {
return null;
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}
}
function handleError($error)
{
if ($error->getCode() == DB_DATAOBJECT_ERROR_NODATA) {
return;
}
$logmsg = "PEAR error: " . $error->getMessage();
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if (common_config('site', 'logdebug')) {
$logmsg .= " : ". $error->getDebugInfo();
}
common_log(LOG_ERR, $logmsg);
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if (common_config('site', 'logdebug')) {
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$bt = $error->getBacktrace();
foreach ($bt as $line) {
common_log(LOG_ERR, $line);
}
}
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if ($error instanceof DB_DataObject_Error
|| $error instanceof DB_Error
) {
$msg = sprintf(
_(
'The database for %s isn\'t responding correctly, '.
'so the site won\'t work properly. '.
'The site admins probably know about the problem, '.
'but you can contact them at %s to make sure. '.
'Otherwise, wait a few minutes and try again.'
),
common_config('site', 'name'),
common_config('site', 'email')
);
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} else {
$msg = _(
'An important error occured, probably related to email setup. '.
'Check logfiles for more info..'
);
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}
$dac = new DBErrorAction($msg, 500);
$dac->showPage();
exit(-1);
}
function checkMirror($action_obj, $args)
{
global $config;
static $alwaysRW = array('session', 'remember_me');
if (common_config('db', 'mirror') && $action_obj->isReadOnly($args)) {
if (is_array(common_config('db', 'mirror'))) {
// "load balancing", ha ha
$arr = common_config('db', 'mirror');
$k = array_rand($arr);
$mirror = $arr[$k];
} else {
$mirror = common_config('db', 'mirror');
}
// We ensure that these tables always are used
// on the master DB
$config['db']['database_rw'] = $config['db']['database'];
$config['db']['ini_rw'] = INSTALLDIR.'/classes/statusnet.ini';
foreach ($alwaysRW as $table) {
$config['db']['table_'.$table] = 'rw';
}
// everyone else uses the mirror
$config['db']['database'] = $mirror;
}
}
function isLoginAction($action)
{
static $loginActions = array('login', 'recoverpassword', 'api', 'doc', 'register');
$login = null;
if (Event::handle('LoginAction', array($action, &$login))) {
$login = in_array($action, $loginActions);
}
return $login;
}
function main()
{
// fake HTTP redirects using lighttpd's 404 redirects
if (strpos($_SERVER['SERVER_SOFTWARE'], 'lighttpd') !== false) {
$_lighty_url = $base_url.$_SERVER['REQUEST_URI'];
$_lighty_url = @parse_url($_lighty_url);
if ($_lighty_url['path'] != '/index.php' && $_lighty_url['path'] != '/') {
$_lighty_path = preg_replace('/^'.preg_quote(common_config('site', 'path')).'\//', '', substr($_lighty_url['path'], 1));
$_SERVER['QUERY_STRING'] = 'p='.$_lighty_path;
if ($_lighty_url['query']) {
$_SERVER['QUERY_STRING'] .= '&'.$_lighty_url['query'];
}
parse_str($_lighty_url['query'], $_lighty_query);
foreach ($_lighty_query as $key => $val) {
$_GET[$key] = $_REQUEST[$key] = $val;
}
$_GET['p'] = $_REQUEST['p'] = $_lighty_path;
}
}
$_SERVER['REDIRECT_URL'] = preg_replace("/\?.+$/", "", $_SERVER['REQUEST_URI']);
// quick check for fancy URL auto-detection support in installer.
if (isset($_SERVER['REDIRECT_URL']) && (preg_replace("/^\/$/", "", (dirname($_SERVER['REQUEST_URI']))) . '/check-fancy') === $_SERVER['REDIRECT_URL']) {
die("Fancy URL support detection succeeded. We suggest you enable this to get fancy (pretty) URLs.");
}
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global $user, $action;
Snapshot::check();
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if (!_have_config()) {
$msg = sprintf(
_(
"No configuration file found. Try running ".
"the installation program first."
)
);
$sac = new ServerErrorAction($msg);
$sac->showPage();
return;
}
// For database errors
PEAR::setErrorHandling(PEAR_ERROR_CALLBACK, 'handleError');
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// XXX: we need a little more structure in this script
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// get and cache current user
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$user = common_current_user();
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// initialize language env
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common_init_language();
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$path = getPath($_REQUEST);
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$r = Router::get();
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$args = $r->map($path);
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if (!$args) {
$cac = new ClientErrorAction(_('Unknown page'), 404);
$cac->showPage();
return;
}
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$args = array_merge($args, $_REQUEST);
Event::handle('ArgsInitialize', array(&$args));
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$action = $args['action'];
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if (!$action || !preg_match('/^[a-zA-Z0-9_-]*$/', $action)) {
common_redirect(common_local_url('public'));
return;
}
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// If the site is private, and they're not on one of the "public"
// parts of the site, redirect to login
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if (!$user && common_config('site', 'private')
&& !isLoginAction($action)
&& !preg_match('/rss$/', $action)
) {
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common_redirect(common_local_url('login'));
return;
}
$action_class = ucfirst($action).'Action';
if (!class_exists($action_class)) {
$cac = new ClientErrorAction(_('Unknown action'), 404);
$cac->showPage();
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} else {
$action_obj = new $action_class();
checkMirror($action_obj, $args);
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try {
if ($action_obj->prepare($args)) {
$action_obj->handle($args);
}
} catch (ClientException $cex) {
$cac = new ClientErrorAction($cex->getMessage(), $cex->getCode());
$cac->showPage();
} catch (ServerException $sex) { // snort snort guffaw
$sac = new ServerErrorAction($sex->getMessage(), $sex->getCode());
$sac->showPage();
} catch (Exception $ex) {
$sac = new ServerErrorAction($ex->getMessage());
$sac->showPage();
}
}
}
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main();
// XXX: cleanup exit() calls or add an exit handler so
// this always gets called
Event::handle('CleanupPlugin');