gnu-social/lib/util.php
zach 140689800b Twitter-compatible API - Error handling that better matches Twitter's
darcs-hash:20080720070905-ca946-dda57dd92210461361fd58b7a3244bf24c01e801.gz
2008-07-20 03:09:05 -04:00

1328 lines
37 KiB
PHP

<?php
/*
* Laconica - a distributed open-source microblogging tool
* Copyright (C) 2008, Controlez-Vous, 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/>.
*/
/* XXX: break up into separate modules (HTTP, HTML, user, files) */
# Show a server error
function common_server_error($msg, $code=500) {
static $status = array(500 => 'Internal Server Error',
501 => 'Not Implemented',
502 => 'Bad Gateway',
503 => 'Service Unavailable',
504 => 'Gateway Timeout',
505 => 'HTTP Version Not Supported');
if (!array_key_exists($code, $status)) {
$code = 500;
}
$status_string = $status[$code];
header('HTTP/1.1 '.$code.' '.$status_string);
header('Content-type: text/plain');
print $msg;
print "\n";
exit();
}
# Show a user error
function common_user_error($msg, $code=400) {
static $status = array(400 => 'Bad Request',
401 => 'Unauthorized',
402 => 'Payment Required',
403 => 'Forbidden',
404 => 'Not Found',
405 => 'Method Not Allowed',
406 => 'Not Acceptable',
407 => 'Proxy Authentication Required',
408 => 'Request Timeout',
409 => 'Conflict',
410 => 'Gone',
411 => 'Length Required',
412 => 'Precondition Failed',
413 => 'Request Entity Too Large',
414 => 'Request-URI Too Long',
415 => 'Unsupported Media Type',
416 => 'Requested Range Not Satisfiable',
417 => 'Expectation Failed');
if (!array_key_exists($code, $status)) {
$code = 400;
}
$status_string = $status[$code];
header('HTTP/1.1 '.$code.' '.$status_string);
common_show_header('Error');
common_element('div', array('class' => 'error'), $msg);
common_show_footer();
}
$xw = null;
# Start an HTML element
function common_element_start($tag, $attrs=NULL) {
global $xw;
$xw->startElement($tag);
if (is_array($attrs)) {
foreach ($attrs as $name => $value) {
$xw->writeAttribute($name, $value);
}
} else if (is_string($attrs)) {
$xw->writeAttribute('class', $attrs);
}
}
function common_element_end($tag) {
static $empty_tag = array('base', 'meta', 'link', 'hr',
'br', 'param', 'img', 'area',
'input', 'col');
global $xw;
# XXX: check namespace
if (in_array($tag, $empty_tag)) {
$xw->endElement();
} else {
$xw->fullEndElement();
}
}
function common_element($tag, $attrs=NULL, $content=NULL) {
common_element_start($tag, $attrs);
global $xw;
if ($content) {
$xw->text($content);
}
common_element_end($tag);
}
function common_start_xml($doc=NULL, $public=NULL, $system=NULL) {
global $xw;
$xw = new XMLWriter();
$xw->openURI('php://output');
$xw->setIndent(true);
$xw->startDocument('1.0', 'UTF-8');
if ($doc) {
$xw->writeDTD($doc, $public, $system);
}
}
function common_end_xml() {
global $xw;
$xw->endDocument();
$xw->flush();
}
define('PAGE_TYPE_PREFS', 'text/html,application/xhtml+xml,application/xml;q=0.3,text/xml;q=0.2');
function common_show_header($pagetitle, $callable=NULL, $data=NULL, $headercall=NULL) {
global $config, $xw;
$httpaccept = isset($_SERVER['HTTP_ACCEPT']) ? $_SERVER['HTTP_ACCEPT'] : NULL;
# XXX: allow content negotiation for RDF, RSS, or XRDS
$type = common_negotiate_type(common_accept_to_prefs($httpaccept),
common_accept_to_prefs(PAGE_TYPE_PREFS));
if (!$type) {
common_user_error(_('This page is not available in a media type you accept'), 406);
exit(0);
}
header('Content-Type: '.$type);
common_start_xml('html',
'-//W3C//DTD XHTML 1.0 Strict//EN',
'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd');
# FIXME: correct language for interface
common_element_start('html', array('xmlns' => 'http://www.w3.org/1999/xhtml',
'xml:lang' => 'en',
'lang' => 'en'));
common_element_start('head');
common_element('title', NULL,
$pagetitle . " - " . $config['site']['name']);
common_element('link', array('rel' => 'stylesheet',
'type' => 'text/css',
'href' => theme_path('display.css'),
'media' => 'screen, projection, tv'));
foreach (array(6,7) as $ver) {
if (file_exists(theme_file('ie'.$ver.'.css'))) {
# Yes, IE people should be put in jail.
$xw->writeComment('[if lte IE '.$ver.']><link rel="stylesheet" type="text/css" '.
'href="'.theme_path('ie'.$ver.'.css').'" /><![endif]');
}
}
common_element('script', array('type' => 'text/javascript',
'src' => common_path('js/jquery.min.js')),
' ');
common_element('script', array('type' => 'text/javascript',
'src' => common_path('js/util.js')),
' ');
if ($callable) {
if ($data) {
call_user_func($callable, $data);
} else {
call_user_func($callable);
}
}
common_element_end('head');
common_element_start('body');
common_element_start('div', array('id' => 'wrap'));
common_element_start('div', array('id' => 'header'));
common_nav_menu();
if ((isset($config['site']['logo']) && is_string($config['site']['logo']) && (strlen($config['site']['logo']) > 0))
|| file_exists(theme_file('logo.png')))
{
common_element_start('a', array('href' => common_local_url('public')));
common_element('img', array('src' => isset($config['site']['logo']) ?
($config['site']['logo']) : theme_path('logo.png'),
'alt' => $config['site']['name'],
'id' => 'logo'));
common_element_end('a');
} else {
common_element_start('p', array('id' => 'branding'));
common_element('a', array('href' => common_local_url('public')),
$config['site']['name']);
common_element_end('p');
}
common_element('h1', 'pagetitle', $pagetitle);
if ($headercall) {
if ($data) {
call_user_func($headercall, $data);
} else {
call_user_func($headercall);
}
}
common_element_end('div');
common_element_start('div', array('id' => 'content'));
}
function common_show_footer() {
global $xw, $config;
common_element_end('div'); # content div
common_foot_menu();
common_element_start('div', array('id' => 'footer'));
common_element_start('div', 'laconica');
if (common_config('site', 'broughtby')) {
$instr = _('**%%site.name%%** is a microblogging service brought to you by [%%site.broughtby%%](%%site.broughtbyurl%%). ');
} else {
$instr = _('**%%site.name%%** is a microblogging service. ');
}
$instr .= sprintf(_('It runs the [Laconica](http://laconi.ca/) microblogging software, version %s, available under the [GNU Affero General Public License](http://www.fsf.org/licensing/licenses/agpl-3.0.html).'), LACONICA_VERSION);
$output = common_markup_to_html($instr);
common_raw($output);
common_element_end('div');
common_element('img', array('id' => 'cc',
'src' => $config['license']['image'],
'alt' => $config['license']['title']));
common_element_start('p');
common_text(_('Unless otherwise specified, contents of this site are copyright by the contributors and available under the '));
common_element('a', array('class' => 'license',
'rel' => 'license',
'href' => $config['license']['url']),
$config['license']['title']);
common_text(_('. Contributors should be attributed by full name or nickname.'));
common_element_end('p');
common_element_end('div');
common_element_end('div');
common_element_end('body');
common_element_end('html');
common_end_xml();
}
function common_text($txt) {
global $xw;
$xw->text($txt);
}
function common_raw($xml) {
global $xw;
$xw->writeRaw($xml);
}
function common_nav_menu() {
$user = common_current_user();
common_element_start('ul', array('id' => 'nav'));
if ($user) {
common_menu_item(common_local_url('all', array('nickname' => $user->nickname)),
_('Home'));
}
common_menu_item(common_local_url('public'), _('Public'));
common_menu_item(common_local_url('peoplesearch'), _('Search'));
common_menu_item(common_local_url('doc', array('title' => 'help')),
_('Help'));
if ($user) {
common_menu_item(common_local_url('profilesettings'),
_('Settings'));
common_menu_item(common_local_url('logout'),
_('Logout'));
} else {
common_menu_item(common_local_url('login'), _('Login'));
common_menu_item(common_local_url('register'), _('Register'));
common_menu_item(common_local_url('openidlogin'), _('OpenID'));
}
common_element_end('ul');
}
function common_foot_menu() {
common_element_start('ul', array('id' => 'nav_sub'));
common_menu_item(common_local_url('doc', array('title' => 'about')),
_('About'));
common_menu_item(common_local_url('doc', array('title' => 'faq')),
_('FAQ'));
common_menu_item(common_local_url('doc', array('title' => 'privacy')),
_('Privacy'));
common_menu_item(common_local_url('doc', array('title' => 'source')),
_('Source'));
common_menu_item(common_local_url('doc', array('title' => 'contact')),
_('Contact'));
common_element_end('ul');
}
function common_menu_item($url, $text, $title=NULL, $is_selected=false) {
$lattrs = array();
if ($is_selected) {
$lattrs['class'] = 'current';
}
common_element_start('li', $lattrs);
$attrs['href'] = $url;
if ($title) {
$attrs['title'] = $title;
}
common_element('a', $attrs, $text);
common_element_end('li');
}
function common_input($id, $label, $value=NULL,$instructions=NULL) {
common_element_start('p');
common_element('label', array('for' => $id), $label);
$attrs = array('name' => $id,
'type' => 'text',
'class' => 'input_text',
'id' => $id);
if ($value) {
$attrs['value'] = htmlspecialchars($value);
}
common_element('input', $attrs);
if ($instructions) {
common_element('span', 'input_instructions', $instructions);
}
common_element_end('p');
}
function common_checkbox($id, $label, $checked=false, $instructions=NULL, $value='true')
{
common_element_start('p');
$attrs = array('name' => $id,
'type' => 'checkbox',
'class' => 'checkbox',
'id' => $id);
if ($value) {
$attrs['value'] = htmlspecialchars($value);
}
if ($checked) {
$attrs['checked'] = 'checked';
}
common_element('input', $attrs);
# XXX: use a <label>
common_text(' ');
common_element('span', 'checkbox_label', $label);
common_text(' ');
if ($instructions) {
common_element('span', 'input_instructions', $instructions);
}
common_element_end('p');
}
function common_hidden($id, $value) {
common_element('input', array('name' => $id,
'type' => 'hidden',
'id' => $id,
'value' => $value));
}
function common_password($id, $label, $instructions=NULL) {
common_element_start('p');
common_element('label', array('for' => $id), $label);
$attrs = array('name' => $id,
'type' => 'password',
'class' => 'password',
'id' => $id);
common_element('input', $attrs);
if ($instructions) {
common_element('span', 'input_instructions', $instructions);
}
common_element_end('p');
}
function common_submit($id, $label) {
global $xw;
common_element_start('p');
common_element('input', array('type' => 'submit',
'id' => $id,
'name' => $id,
'class' => 'submit',
'value' => $label));
common_element_end('p');
}
function common_textarea($id, $label, $content=NULL, $instructions=NULL) {
common_element_start('p');
common_element('label', array('for' => $id), $label);
common_element('textarea', array('rows' => 3,
'cols' => 40,
'name' => $id,
'id' => $id),
($content) ? $content : '');
if ($instructions) {
common_element('span', 'input_instructions', $instructions);
}
common_element_end('p');
}
# salted, hashed passwords are stored in the DB
function common_munge_password($password, $id) {
return md5($password . $id);
}
# check if a username exists and has matching password
function common_check_user($nickname, $password) {
$user = User::staticGet('nickname', $nickname);
if (is_null($user)) {
return false;
} else {
if (0 == strcmp(common_munge_password($password, $user->id),
$user->password)) {
return $user;
} else {
return false;
}
}
}
# is the current user logged in?
function common_logged_in() {
return (!is_null(common_current_user()));
}
function common_have_session() {
return (0 != strcmp(session_id(), ''));
}
function common_ensure_session() {
if (!common_have_session()) {
@session_start();
}
}
# Three kinds of arguments:
# 1) a user object
# 2) a nickname
# 3) NULL to clear
function common_set_user($user) {
if (is_null($user) && common_have_session()) {
unset($_SESSION['userid']);
return true;
} else if (is_string($user)) {
$nickname = $user;
$user = User::staticGet('nickname', $nickname);
} else if (!($user instanceof User)) {
return false;
}
if ($user) {
common_ensure_session();
$_SESSION['userid'] = $user->id;
return $user;
}
return false;
}
function common_set_cookie($key, $value, $expiration=0) {
$path = common_config('site', 'path');
$server = common_config('site', 'server');
if ($path && ($path != '/')) {
$cookiepath = '/' . $path . '/';
} else {
$cookiepath = '/';
}
return setcookie($key,
$value,
$expiration,
$cookiepath,
$server);
}
define('REMEMBERME', 'rememberme');
define('REMEMBERME_EXPIRY', 30 * 24 * 60 * 60);
function common_rememberme($user=NULL) {
if (!$user) {
$user = common_current_user();
if (!$user) {
common_debug('No current user to remember', __FILE__);
return false;
}
}
$rm = new Remember_me();
$rm->code = common_good_rand(16);
$rm->user_id = $user->id;
$result = $rm->insert();
if (!$result) {
common_log_db_error($rm, 'INSERT', __FILE__);
common_debug('Error adding rememberme record for ' . $user->nickname, __FILE__);
return false;
}
common_log(LOG_INFO, 'adding rememberme cookie for ' . $user->nickname);
common_set_cookie(REMEMBERME,
implode(':', array($rm->user_id, $rm->code)),
time() + REMEMBERME_EXPIRY);
return true;
}
function common_remembered_user() {
$user = NULL;
# Try to remember
$packed = $_COOKIE[REMEMBERME];
if ($packed) {
list($id, $code) = explode(':', $packed);
if ($id && $code) {
$rm = Remember_me::staticGet($code);
if ($rm && ($rm->user_id == $id)) {
$user = User::staticGet($rm->user_id);
if ($user) {
# successful!
$result = $rm->delete();
if (!$result) {
common_log_db_error($rm, 'DELETE', __FILE__);
$user = NULL;
} else {
common_log(LOG_INFO, 'logging in ' . $user->nickname . ' using rememberme code ' . $rm->code);
common_set_user($user->nickname);
common_real_login(false);
# We issue a new cookie, so they can log in
# automatically again after this session
common_rememberme($user);
}
}
}
}
}
return $user;
}
# must be called with a valid user!
function common_forgetme() {
common_set_cookie(REMEMBERME, '', 0);
}
# who is the current user?
function common_current_user() {
if ($_REQUEST[session_name()] || $_SESSION && $_SESSION['userid']) {
common_ensure_session();
$id = $_SESSION['userid'];
if ($id) {
# note: this should cache
$user = User::staticGet($id);
return $user;
}
}
# that didn't work; try to remember
$user = common_remembered_user();
common_debug("Got User " . $user->nickname);
if ($user) {
common_debug("Faking session on remembered user");
$_SESSION['userid'] = $user->id;
}
return $user;
}
# Logins that are 'remembered' aren't 'real' -- they're subject to
# cookie-stealing. So, we don't let them do certain things. New reg,
# OpenID, and password logins _are_ real.
function common_real_login($real=true) {
common_ensure_session();
$_SESSION['real_login'] = $real;
}
function common_is_real_login() {
return common_logged_in() && $_SESSION['real_login'];
}
# get canonical version of nickname for comparison
function common_canonical_nickname($nickname) {
# XXX: UTF-8 canonicalization (like combining chars)
return strtolower($nickname);
}
# get canonical version of email for comparison
function common_canonical_email($email) {
# XXX: canonicalize UTF-8
# XXX: lcase the domain part
return $email;
}
define('URL_REGEX', '^|[ \t\r\n])((ftp|http|https|gopher|mailto|news|nntp|telnet|wais|file|prospero|aim|webcal):(([A-Za-z0-9$_.+!*(),;/?:@&~=-])|%[A-Fa-f0-9]{2}){2,}(#([a-zA-Z0-9][a-zA-Z0-9$_.+!*(),;/?:@&~=%-]*))?([A-Za-z0-9$_+!*();/?:~-]))');
function common_render_content($text, $notice) {
$r = htmlspecialchars($text);
$id = $notice->profile_id;
$r = preg_replace('@https?://[^)\]>\s]+@', '<a href="\0" class="extlink">\0</a>', $r);
$r = preg_replace('/(^|\s+)@([a-z0-9]{1,64})/e', "'\\1@'.common_at_link($id, '\\2')", $r);
$r = preg_replace('/^T ([A-Z0-9]{1,64}) /e', "'T '.common_at_link($id, '\\1').' '", $r);
# XXX: # tags
# XXX: machine tags
return $r;
}
function common_at_link($sender_id, $nickname) {
$sender = Profile::staticGet($sender_id);
$recipient = common_relative_profile($sender, $nickname);
if ($recipient) {
return '<a href="'.htmlspecialchars($recipient->profileurl).'" class="atlink">'.$nickname.'</a>';
} else {
return $nickname;
}
}
function common_relative_profile($sender, $nickname, $dt=NULL) {
# Try to find profiles this profile is subscribed to that have this nickname
$recipient = new Profile();
# XXX: use a join instead of a subquery
$recipient->whereAdd('EXISTS (SELECT subscribed from subscription where subscriber = '.$sender_id.' and subscribed = id)', 'AND');
$recipient->whereAdd('nickname = "' . trim($nickname) . '"', 'AND');
if ($recipient->find(TRUE)) {
# XXX: should probably differentiate between profiles with
# the same name by date of most recent update
return $recipient;
}
# Try to find profiles that listen to this profile and that have this nickname
$recipient = new Profile();
# XXX: use a join instead of a subquery
$recipient->whereAdd('EXISTS (SELECT subscriber from subscription where subscribed = '.$sender_id.' and subscriber = id)', 'AND');
$recipient->whereAdd('nickname = "' . trim($nickname) . '"', 'AND');
if ($recipient->find(TRUE)) {
# XXX: should probably differentiate between profiles with
# the same name by date of most recent update
return $recipient;
}
# If this is a local user, try to find a local user with that nickname.
$sender = User::staticGet($sender->id);
if ($sender) {
$recipient_user = User::staticGet('nickname', $nickname);
if ($recipient_user) {
return $recipient_user->getProfile();
}
}
# Otherwise, no links. @messages from local users to remote users,
# or from remote users to other remote users, are just
# outside our ability to make intelligent guesses about
return NULL;
}
// where should the avatar go for this user?
function common_avatar_filename($id, $extension, $size=NULL, $extra=NULL) {
global $config;
if ($size) {
return $id . '-' . $size . (($extra) ? ('-' . $extra) : '') . $extension;
} else {
return $id . '-original' . (($extra) ? ('-' . $extra) : '') . $extension;
}
}
function common_avatar_path($filename) {
global $config;
return INSTALLDIR . '/avatar/' . $filename;
}
function common_avatar_url($filename) {
return common_path('avatar/'.$filename);
}
function common_avatar_display_url($avatar) {
$server = common_config('avatar', 'server');
if ($server) {
return 'http://'.$server.'/'.$avatar->filename;
} else {
return $avatar->url;
}
}
function common_default_avatar($size) {
static $sizenames = array(AVATAR_PROFILE_SIZE => 'profile',
AVATAR_STREAM_SIZE => 'stream',
AVATAR_MINI_SIZE => 'mini');
return theme_path('default-avatar-'.$sizenames[$size].'.png');
}
function common_local_url($action, $args=NULL) {
global $config;
if ($config['site']['fancy']) {
return common_fancy_url($action, $args);
} else {
return common_simple_url($action, $args);
}
}
function common_fancy_url($action, $args=NULL) {
switch (strtolower($action)) {
case 'public':
if ($args && isset($args['page'])) {
return common_path('?page=' . $args['page']);
} else {
return common_path('');
}
case 'publicrss':
return common_path('rss');
case 'publicxrds':
return common_path('xrds');
case 'doc':
return common_path('doc/'.$args['title']);
case 'login':
case 'logout':
case 'register':
case 'subscribe':
case 'unsubscribe':
return common_path('main/'.$action);
case 'remotesubscribe':
if ($args && $args['nickname']) {
return common_path('main/remote?nickname=' . $args['nickname']);
} else {
return common_path('main/remote');
}
case 'openidlogin':
return common_path('main/openid');
case 'avatar':
case 'password':
return common_path('settings/'.$action);
case 'profilesettings':
return common_path('settings/profile');
case 'emailsettings':
return common_path('settings/email');
case 'openidsettings':
return common_path('settings/openid');
case 'smssettings':
return common_path('settings/sms');
case 'newnotice':
if ($args && $args['replyto']) {
return common_path('notice/new?replyto='.$args['replyto']);
} else {
return common_path('notice/new');
}
case 'shownotice':
return common_path('notice/'.$args['notice']);
case 'xrds':
case 'foaf':
return common_path($args['nickname'].'/'.$action);
case 'subscriptions':
case 'subscribers':
case 'all':
case 'replies':
if ($args && isset($args['page'])) {
return common_path($args['nickname'].'/'.$action.'?page=' . $args['page']);
} else {
return common_path($args['nickname'].'/'.$action);
}
case 'allrss':
return common_path($args['nickname'].'/all/rss');
case 'repliesrss':
return common_path($args['nickname'].'/replies/rss');
case 'userrss':
return common_path($args['nickname'].'/rss');
case 'showstream':
if ($args && isset($args['page'])) {
return common_path($args['nickname'].'?page=' . $args['page']);
} else {
return common_path($args['nickname']);
}
case 'confirmaddress':
return common_path('main/confirmaddress/'.$args['code']);
case 'userbyid':
return common_path('user/'.$args['id']);
case 'recoverpassword':
$path = 'main/recoverpassword';
if ($args['code']) {
$path .= '/' . $args['code'];
}
return common_path($path);
case 'imsettings':
return common_path('settings/im');
case 'peoplesearch':
return common_path('search/people' . (($args) ? ('?' . http_build_query($args)) : ''));
case 'noticesearch':
return common_path('search/notice' . (($args) ? ('?' . http_build_query($args)) : ''));
case 'noticesearchrss':
return common_path('search/notice/rss' . (($args) ? ('?' . http_build_query($args)) : ''));
case 'avatarbynickname':
return common_path($args['nickname'].'/avatar/'.$args['size']);
default:
return common_simple_url($action, $args);
}
}
function common_simple_url($action, $args=NULL) {
global $config;
/* XXX: pretty URLs */
$extra = '';
if ($args) {
foreach ($args as $key => $value) {
$extra .= "&${key}=${value}";
}
}
return common_path("index.php?action=${action}${extra}");
}
function common_path($relative) {
global $config;
$pathpart = ($config['site']['path']) ? $config['site']['path']."/" : '';
return "http://".$config['site']['server'].'/'.$pathpart.$relative;
}
function common_date_string($dt) {
// XXX: do some sexy date formatting
// return date(DATE_RFC822, $dt);
$t = strtotime($dt);
$now = time();
$diff = $now - $t;
if ($now < $t) { # that shouldn't happen!
return common_exact_date($dt);
} else if ($diff < 60) {
return _('a few seconds ago');
} else if ($diff < 92) {
return _('about a minute ago');
} else if ($diff < 3300) {
return sprintf(_('about %d minutes ago'), round($diff/60));
} else if ($diff < 5400) {
return _('about an hour ago');
} else if ($diff < 22 * 3600) {
return sprintf(_('about %d hours ago'), round($diff/3600));
} else if ($diff < 37 * 3600) {
return _('about a day ago');
} else if ($diff < 24 * 24 * 3600) {
return sprintf(_('about %d days ago'), round($diff/(24*3600)));
} else if ($diff < 46 * 24 * 3600) {
return _('about a month ago');
} else if ($diff < 330 * 24 * 3600) {
return sprintf(_('about %d months ago'), round($diff/(30*24*3600)));
} else if ($diff < 480 * 24 * 3600) {
return _('about a year ago');
} else {
return common_exact_date($dt);
}
}
function common_exact_date($dt) {
$t = strtotime($dt);
return date(DATE_RFC850, $t);
}
function common_date_w3dtf($dt) {
$t = strtotime($dt);
return date(DATE_W3C, $t);
}
function common_date_rfc2822($dt) {
$t = strtotime($dt);
return date("r", $t);
}
function common_date_iso8601($dt) {
$t = strtotime($dt);
return date("c", $t);
}
function common_redirect($url, $code=307) {
static $status = array(301 => "Moved Permanently",
302 => "Found",
303 => "See Other",
307 => "Temporary Redirect");
header("Status: ${code} $status[$code]");
header("Location: $url");
common_start_xml('a',
'-//W3C//DTD XHTML 1.0 Strict//EN',
'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd');
common_element('a', array('href' => $url), $url);
common_end_xml();
exit;
}
function common_save_replies($notice) {
# Alternative reply format
$tname = false;
if (preg_match('/^T ([A-Z0-9]{1,64}) /', $notice->content, $match)) {
$tname = $match[1];
}
# extract all @messages
$cnt = preg_match_all('/(?:^|\s)@([a-z0-9]{1,64})/', $notice->content, $match);
if (!$cnt && !$tname) {
return true;
}
# XXX: is there another way to make an array copy?
$names = ($tname) ? array_unique(array_merge(array(strtolower($tname)), $match[1])) : array_unique($match[1]);
$sender = Profile::staticGet($notice->profile_id);
# store replied only for first @ (what user/notice what the reply directed,
# we assume first @ is it)
for ($i=0; $i<count($names); $i++) {
$nickname = $names[$i];
$recipient = common_relative_profile($sender, $nickname, $notice->created);
if (!$recipient) {
continue;
}
if ($i == 0 && ($recipient->id != $sender->id)) { # Don't save reply to self
$reply_for = $recipient;
$recipient_notice = $reply_for->getCurrentNotice();
$orig = clone($notice);
$notice->reply_to = $recipient_notice->id;
$notice->update($orig);
}
$reply = new Reply();
$reply->notice_id = $notice->id;
$reply->profile_id = $recipient->id;
$id = $reply->insert();
if (!$id) {
$last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
common_log(LOG_ERR, 'DB error inserting reply: ' . $last_error->message);
common_server_error(sprintf(_('DB error inserting reply: %s'), $last_error->message));
return;
}
}
}
function common_broadcast_notice($notice, $remote=false) {
if (common_config('queue', 'enabled')) {
# Do it later!
return common_enqueue_notice($notice);
} else {
return common_real_broadcast($notice, $remote);
}
}
# Stick the notice on the queue
function common_enqueue_notice($notice) {
$qi = new Queue_item();
$qi->notice_id = $notice->id;
$qi->created = $notice->created;
$result = $qi->insert();
if (!$result) {
$last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
common_log(LOG_ERR, 'DB error inserting queue item: ' . $last_error->message);
return false;
}
common_log(LOG_DEBUG, 'complete queueing notice ID = ' . $notice->id);
return $result;
}
function common_real_broadcast($notice, $remote=false) {
$success = true;
if (!$remote) {
# Make sure we have the OMB stuff
require_once(INSTALLDIR.'/lib/omb.php');
$success = omb_broadcast_remote_subscribers($notice);
if (!$success) {
common_log(LOG_ERR, 'Error in OMB broadcast for notice ' . $notice->id);
}
}
if ($success) {
require_once(INSTALLDIR.'/lib/jabber.php');
$success = jabber_broadcast_notice($notice);
if (!$success) {
common_log(LOG_ERR, 'Error in jabber broadcast for notice ' . $notice->id);
}
}
if ($success) {
require_once(INSTALLDIR.'/lib/mail.php');
$success = mail_broadcast_notice_sms($notice);
if (!$success) {
common_log(LOG_ERR, 'Error in sms broadcast for notice ' . $notice->id);
}
}
// XXX: broadcast notices to other IM
return $success;
}
function common_broadcast_profile($profile) {
// XXX: optionally use a queue system like http://code.google.com/p/microapps/wiki/NQDQ
require_once(INSTALLDIR.'/lib/omb.php');
omb_broadcast_profile($profile);
// XXX: Other broadcasts...?
return true;
}
function common_profile_url($nickname) {
return common_local_url('showstream', array('nickname' => $nickname));
}
# Don't call if nobody's logged in
function common_notice_form($action=NULL, $content=NULL) {
$user = common_current_user();
assert(!is_null($user));
common_element_start('form', array('id' => 'status_form',
'method' => 'post',
'action' => common_local_url('newnotice')));
common_element_start('p');
common_element('label', array('for' => 'status_textarea',
'id' => 'status_label'),
sprintf(_('What\'s up, %s?'), $user->nickname));
common_element('span', array('id' => 'counter', 'class' => 'counter'), '140');
common_element('textarea', array('id' => 'status_textarea',
'cols' => 60,
'rows' => 3,
'name' => 'status_textarea'),
($content) ? $content : '');
if ($action) {
common_hidden('returnto', $action);
}
common_element('input', array('id' => 'status_submit',
'name' => 'status_submit',
'type' => 'submit',
'value' => _('Send')));
common_element_end('p');
common_element_end('form');
}
# Should make up a reasonable root URL
function common_root_url() {
return common_path('');
}
# returns $bytes bytes of random data as a hexadecimal string
# "good" here is a goal and not a guarantee
function common_good_rand($bytes) {
# XXX: use random.org...?
if (file_exists('/dev/urandom')) {
return common_urandom($bytes);
} else { # FIXME: this is probably not good enough
return common_mtrand($bytes);
}
}
function common_urandom($bytes) {
$h = fopen('/dev/urandom', 'rb');
# should not block
$src = fread($h, $bytes);
fclose($h);
$enc = '';
for ($i = 0; $i < $bytes; $i++) {
$enc .= sprintf("%02x", (ord($src[$i])));
}
return $enc;
}
function common_mtrand($bytes) {
$enc = '';
for ($i = 0; $i < $bytes; $i++) {
$enc .= sprintf("%02x", mt_rand(0, 255));
}
return $enc;
}
function common_set_returnto($url) {
common_ensure_session();
$_SESSION['returnto'] = $url;
}
function common_get_returnto() {
common_ensure_session();
return $_SESSION['returnto'];
}
function common_timestamp() {
return date('YmdHis');
}
function common_ensure_syslog() {
static $initialized = false;
if (!$initialized) {
global $config;
openlog($config['syslog']['appname'], 0, LOG_USER);
$initialized = true;
}
}
function common_log($priority, $msg, $filename=NULL) {
$logfile = common_config('site', 'logfile');
if ($logfile) {
$log = fopen($logfile, "a");
if ($log) {
static $syslog_priorities = array('LOG_EMERG', 'LOG_ALERT', 'LOG_CRIT', 'LOG_ERR',
'LOG_WARNING', 'LOG_NOTICE', 'LOG_INFO', 'LOG_DEBUG');
$output = date('Y-m-d H:i:s') . ' ' . $syslog_priorities[$priority] . ': ' . $msg . "\n";
fwrite($log, $output);
fclose($log);
}
} else {
common_ensure_syslog();
syslog($priority, $msg);
}
}
function common_debug($msg, $filename=NULL) {
if ($filename) {
common_log(LOG_DEBUG, basename($filename).' - '.$msg);
} else {
common_log(LOG_DEBUG, $msg);
}
}
function common_log_db_error(&$object, $verb, $filename=NULL) {
$objstr = common_log_objstring($object);
$last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
common_log(LOG_ERR, $last_error->message . '(' . $verb . ' on ' . $objstr . ')', $filename);
}
function common_log_objstring(&$object) {
if (is_null($object)) {
return "NULL";
}
$arr = $object->toArray();
$fields = array();
foreach ($arr as $k => $v) {
$fields[] = "$k='$v'";
}
$objstring = $object->tableName() . '[' . implode(',', $fields) . ']';
return $objstring;
}
function common_valid_http_url($url) {
return Validate::uri($url, array('allowed_schemes' => array('http', 'https')));
}
function common_valid_tag($tag) {
if (preg_match('/^tag:(.*?),(\d{4}(-\d{2}(-\d{2})?)?):(.*)$/', $tag, $matches)) {
return (Validate::email($matches[1]) ||
preg_match('/^([\w-\.]+)$/', $matches[1]));
}
return false;
}
# Does a little before-after block for next/prev page
function common_pagination($have_before, $have_after, $page, $action, $args=NULL) {
if ($have_before || $have_after) {
common_element_start('div', array('id' => 'pagination'));
common_element_start('ul', array('id' => 'nav_pagination'));
}
if ($have_before) {
$pargs = array('page' => $page-1);
$newargs = ($args) ? array_merge($args,$pargs) : $pargs;
common_element_start('li', 'before');
common_element('a', array('href' => common_local_url($action, $newargs)),
_('« After'));
common_element_end('li');
}
if ($have_after) {
$pargs = array('page' => $page+1);
$newargs = ($args) ? array_merge($args,$pargs) : $pargs;
common_element_start('li', 'after');
common_element('a', array('href' => common_local_url($action, $newargs)),
_('Before »'));
common_element_end('li');
}
if ($have_before || $have_after) {
common_element_end('ul');
common_element_end('div');
}
}
/* Following functions are copied from MediaWiki GlobalFunctions.php
* and written by Evan Prodromou. */
function common_accept_to_prefs($accept, $def = '*/*') {
# No arg means accept anything (per HTTP spec)
if(!$accept) {
return array($def => 1);
}
$prefs = array();
$parts = explode(',', $accept);
foreach($parts as $part) {
# FIXME: doesn't deal with params like 'text/html; level=1'
@list($value, $qpart) = explode(';', $part);
$match = array();
if(!isset($qpart)) {
$prefs[$value] = 1;
} elseif(preg_match('/q\s*=\s*(\d*\.\d+)/', $qpart, $match)) {
$prefs[$value] = $match[1];
}
}
return $prefs;
}
function common_mime_type_match($type, $avail) {
if(array_key_exists($type, $avail)) {
return $type;
} else {
$parts = explode('/', $type);
if(array_key_exists($parts[0] . '/*', $avail)) {
return $parts[0] . '/*';
} elseif(array_key_exists('*/*', $avail)) {
return '*/*';
} else {
return NULL;
}
}
}
function common_negotiate_type($cprefs, $sprefs) {
$combine = array();
foreach(array_keys($sprefs) as $type) {
$parts = explode('/', $type);
if($parts[1] != '*') {
$ckey = common_mime_type_match($type, $cprefs);
if($ckey) {
$combine[$type] = $sprefs[$type] * $cprefs[$ckey];
}
}
}
foreach(array_keys($cprefs) as $type) {
$parts = explode('/', $type);
if($parts[1] != '*' && !array_key_exists($type, $sprefs)) {
$skey = common_mime_type_match($type, $sprefs);
if($skey) {
$combine[$type] = $sprefs[$skey] * $cprefs[$type];
}
}
}
$bestq = 0;
$besttype = "text/html";
foreach(array_keys($combine) as $type) {
if($combine[$type] > $bestq) {
$besttype = $type;
$bestq = $combine[$type];
}
}
return $besttype;
}
function common_config($main, $sub) {
global $config;
return $config[$main][$sub];
}
function common_copy_args($from) {
$to = array();
$strip = get_magic_quotes_gpc();
foreach ($from as $k => $v) {
$to[$k] = ($strip) ? stripslashes($v) : $v;
}
return $to;
}
function common_user_uri(&$user) {
return common_local_url('userbyid', array('id' => $user->id));
}
function common_notice_uri(&$notice) {
return common_local_url('shownotice',
array('notice' => $notice->id));
}
# 36 alphanums - lookalikes (0, O, 1, I) = 32 chars = 5 bits
function common_confirmation_code($bits) {
# 36 alphanums - lookalikes (0, O, 1, I) = 32 chars = 5 bits
static $codechars = '23456789ABCDEFGHJKLMNPQRSTUVWXYZ';
$chars = ceil($bits/5);
$code = '';
for ($i = 0; $i < $chars; $i++) {
# XXX: convert to string and back
$num = hexdec(common_good_rand(1));
# XXX: randomness is too precious to throw away almost
# 40% of the bits we get!
$code .= $codechars[$num%32];
}
return $code;
}
# convert markup to HTML
function common_markup_to_html($c) {
$c = preg_replace('/%%action.(\w+)%%/e', "common_local_url('\\1')", $c);
$c = preg_replace('/%%doc.(\w+)%%/e', "common_local_url('doc', array('title'=>'\\1'))", $c);
$c = preg_replace('/%%(\w+).(\w+)%%/e', 'common_config(\'\\1\', \'\\2\')', $c);
return Markdown($c);
}
function common_profile_avatar_url($profile, $size=AVATAR_PROFILE_SIZE) {
$avatar = $profile->getAvatar($size);
if ($avatar) {
return common_avatar_display_url($avatar);
} else {
return common_default_avatar($size);
}
}
function common_profile_uri($profile) {
if (!$profile) {
return NULL;
}
$user = User::staticGet($profile->id);
if ($user) {
return $user->uri;
}
$remote = Remote_profile::staticGet($profile->id);
if ($remote) {
return $remote->uri;
}
# XXX: this is a very bad profile!
return NULL;
}
function common_canonical_sms($sms) {
# strip non-digits
preg_replace('/\D/', '', $sms);
return $sms;
}