forked from GNUsocial/gnu-social
		
	I changed common_local_url() to take an additional optional argument -- for query parameters. Being persnickety, I made it the third of four, and moved the last one ($fragment) down a slot. That required changing a couple of calls.
		
			
				
	
	
		
			1290 lines
		
	
	
		
			38 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			1290 lines
		
	
	
		
			38 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, user, files) */
 | |
| 
 | |
| // Show a server error
 | |
| 
 | |
| function common_server_error($msg, $code=500)
 | |
| {
 | |
|     $err = new ServerErrorAction($msg, $code);
 | |
|     $err->showPage();
 | |
| }
 | |
| 
 | |
| // Show a user error
 | |
| function common_user_error($msg, $code=400)
 | |
| {
 | |
|     $err = new ClientErrorAction($msg, $code);
 | |
|     $err->showPage();
 | |
| }
 | |
| 
 | |
| function common_init_locale($language=null)
 | |
| {
 | |
|     if(!$language) {
 | |
|         $language = common_language();
 | |
|     }
 | |
|     putenv('LANGUAGE='.$language);
 | |
|     putenv('LANG='.$language);
 | |
|     return setlocale(LC_ALL, $language . ".utf8",
 | |
|                      $language . ".UTF8",
 | |
|                      $language . ".utf-8",
 | |
|                      $language . ".UTF-8",
 | |
|                      $language);
 | |
| }
 | |
| 
 | |
| function common_init_language()
 | |
| {
 | |
|     mb_internal_encoding('UTF-8');
 | |
|     $language = common_language();
 | |
|     // So we don't have to make people install the gettext locales
 | |
|     $locale_set = common_init_locale($language);
 | |
|     bindtextdomain("laconica", common_config('site','locale_path'));
 | |
|     bind_textdomain_codeset("laconica", "UTF-8");
 | |
|     textdomain("laconica");
 | |
|     setlocale(LC_CTYPE, 'C');
 | |
|     if(!$locale_set) {
 | |
|         common_log(LOG_INFO,'Language requested:'.$language.' - locale could not be set:',__FILE__);
 | |
|     }
 | |
| }
 | |
| 
 | |
| function common_timezone()
 | |
| {
 | |
|     if (common_logged_in()) {
 | |
|         $user = common_current_user();
 | |
|         if ($user->timezone) {
 | |
|             return $user->timezone;
 | |
|         }
 | |
|     }
 | |
| 
 | |
|     global $config;
 | |
|     return $config['site']['timezone'];
 | |
| }
 | |
| 
 | |
| function common_language()
 | |
| {
 | |
| 
 | |
|     // If there is a user logged in and they've set a language preference
 | |
|     // then return that one...
 | |
|     if (common_logged_in()) {
 | |
|         $user = common_current_user();
 | |
|         $user_language = $user->language;
 | |
|         if ($user_language)
 | |
|           return $user_language;
 | |
|     }
 | |
| 
 | |
|     // Otherwise, find the best match for the languages requested by the
 | |
|     // user's browser...
 | |
|     $httplang = isset($_SERVER['HTTP_ACCEPT_LANGUAGE']) ? $_SERVER['HTTP_ACCEPT_LANGUAGE'] : null;
 | |
|     if (!empty($httplang)) {
 | |
|         $language = client_prefered_language($httplang);
 | |
|         if ($language)
 | |
|           return $language;
 | |
|     }
 | |
| 
 | |
|     // Finally, if none of the above worked, use the site's default...
 | |
|     return common_config('site', 'language');
 | |
| }
 | |
| // salted, hashed passwords are stored in the DB
 | |
| 
 | |
| function common_munge_password($password, $id)
 | |
| {
 | |
|     return md5($password . $id);
 | |
| }
 | |
| 
 | |
| // check if a username exists and has matching password
 | |
| function common_check_user($nickname, $password)
 | |
| {
 | |
|     // NEVER allow blank passwords, even if they match the DB
 | |
|     if (mb_strlen($password) == 0) {
 | |
|         return false;
 | |
|     }
 | |
|     $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
 | |
| 
 | |
| // Initialize to false; set to null if none found
 | |
| 
 | |
| $_cur = false;
 | |
| 
 | |
| function common_set_user($user)
 | |
| {
 | |
| 
 | |
|     global $_cur;
 | |
| 
 | |
|     if (is_null($user) && common_have_session()) {
 | |
|         $_cur = null;
 | |
|         unset($_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;
 | |
|         $_cur = $user;
 | |
|         return $_cur;
 | |
|     }
 | |
|     return false;
 | |
| }
 | |
| 
 | |
| function common_set_cookie($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,
 | |
|                      $server);
 | |
| }
 | |
| 
 | |
| define('REMEMBERME', 'rememberme');
 | |
| define('REMEMBERME_EXPIRY', 30 * 24 * 60 * 60); // 30 days
 | |
| 
 | |
| function common_rememberme($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;
 | |
| 
 | |
|     // Wrap the insert in some good ol' fashioned transaction code
 | |
| 
 | |
|     $rm->query('BEGIN');
 | |
| 
 | |
|     $result = $rm->insert();
 | |
| 
 | |
|     if (!$result) {
 | |
|         common_log_db_error($rm, 'INSERT', __FILE__);
 | |
|         common_debug('Error adding rememberme record for ' . $user->nickname, __FILE__);
 | |
|         return false;
 | |
|     }
 | |
| 
 | |
|     $rm->query('COMMIT');
 | |
| 
 | |
|     common_debug('Inserted rememberme record (' . $rm->code . ', ' . $rm->user_id . '); result = ' . $result . '.', __FILE__);
 | |
| 
 | |
|     $cookieval = $rm->user_id . ':' . $rm->code;
 | |
| 
 | |
|     common_log(LOG_INFO, 'adding rememberme cookie "' . $cookieval . '" for ' . $user->nickname);
 | |
| 
 | |
|     common_set_cookie(REMEMBERME, $cookieval, time() + REMEMBERME_EXPIRY);
 | |
| 
 | |
|     return true;
 | |
| }
 | |
| 
 | |
| function common_remembered_user()
 | |
| {
 | |
| 
 | |
|     $user = null;
 | |
| 
 | |
|     $packed = isset($_COOKIE[REMEMBERME]) ? $_COOKIE[REMEMBERME] : null;
 | |
| 
 | |
|     if (!$packed) {
 | |
|         return null;
 | |
|     }
 | |
| 
 | |
|     list($id, $code) = explode(':', $packed);
 | |
| 
 | |
|     if (!$id || !$code) {
 | |
|         common_log(LOG_WARNING, 'Malformed rememberme cookie: ' . $packed);
 | |
|         common_forgetme();
 | |
|         return null;
 | |
|     }
 | |
| 
 | |
|     $rm = Remember_me::staticGet($code);
 | |
| 
 | |
|     if (!$rm) {
 | |
|         common_log(LOG_WARNING, 'No such remember code: ' . $code);
 | |
|         common_forgetme();
 | |
|         return null;
 | |
|     }
 | |
| 
 | |
|     if ($rm->user_id != $id) {
 | |
|         common_log(LOG_WARNING, 'Rememberme code for wrong user: ' . $rm->user_id . ' != ' . $id);
 | |
|         common_forgetme();
 | |
|         return null;
 | |
|     }
 | |
| 
 | |
|     $user = User::staticGet($rm->user_id);
 | |
| 
 | |
|     if (!$user) {
 | |
|         common_log(LOG_WARNING, 'No such user for rememberme: ' . $rm->user_id);
 | |
|         common_forgetme();
 | |
|         return null;
 | |
|     }
 | |
| 
 | |
|     // successful!
 | |
|     $result = $rm->delete();
 | |
| 
 | |
|     if (!$result) {
 | |
|         common_log_db_error($rm, 'DELETE', __FILE__);
 | |
|         common_log(LOG_WARNING, 'Could not delete rememberme: ' . $code);
 | |
|         common_forgetme();
 | |
|         return null;
 | |
|     }
 | |
| 
 | |
|     common_log(LOG_INFO, 'logging in ' . $user->nickname . ' using rememberme code ' . $rm->code);
 | |
| 
 | |
|     common_set_user($user);
 | |
|     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()
 | |
| {
 | |
|     global $_cur;
 | |
| 
 | |
|     if ($_cur === false) {
 | |
| 
 | |
|         if (isset($_REQUEST[session_name()]) || (isset($_SESSION['userid']) && $_SESSION['userid'])) {
 | |
|             common_ensure_session();
 | |
|             $id = isset($_SESSION['userid']) ? $_SESSION['userid'] : false;
 | |
|             if ($id) {
 | |
|                 $_cur = User::staticGet($id);
 | |
|                 return $_cur;
 | |
|             }
 | |
|         }
 | |
| 
 | |
|         // that didn't work; try to remember; will init $_cur to null on failure
 | |
|         $_cur = common_remembered_user();
 | |
| 
 | |
|         if ($_cur) {
 | |
|             common_debug("Got User " . $_cur->nickname);
 | |
|             common_debug("Faking session on remembered user");
 | |
|             // XXX: Is this necessary?
 | |
|             $_SESSION['userid'] = $_cur->id;
 | |
|         }
 | |
|     }
 | |
| 
 | |
|     return $_cur;
 | |
| }
 | |
| 
 | |
| // Logins that are 'remembered' aren't 'real' -- they're subject to
 | |
| // cookie-stealing. So, we don't let them do certain things. New reg,
 | |
| // OpenID, and password logins _are_ real.
 | |
| 
 | |
| function common_real_login($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 $email;
 | |
| }
 | |
| 
 | |
| function common_render_content($text, $notice)
 | |
| {
 | |
|     $r = common_render_text($text);
 | |
|     $id = $notice->profile_id;
 | |
|     $r = preg_replace('/(^|\s+)@([A-Za-z0-9]{1,64})/e', "'\\1@'.common_at_link($id, '\\2')", $r);
 | |
|     $r = preg_replace('/^T ([A-Z0-9]{1,64}) /e', "'T '.common_at_link($id, '\\1').' '", $r);
 | |
|     $r = preg_replace('/(^|\s+)@#([A-Za-z0-9]{1,64})/e', "'\\1@#'.common_at_hash_link($id, '\\2')", $r);
 | |
|     $r = preg_replace('/(^|\s)!([A-Za-z0-9]{1,64})/e', "'\\1!'.common_group_link($id, '\\2')", $r);
 | |
|     return $r;
 | |
| }
 | |
| 
 | |
| function common_render_text($text)
 | |
| {
 | |
|     $r = htmlspecialchars($text);
 | |
| 
 | |
|     $r = preg_replace('/[\x{0}-\x{8}\x{b}-\x{c}\x{e}-\x{19}]/', '', $r);
 | |
|     $r = common_replace_urls_callback($r, 'common_linkify');
 | |
|     $r = preg_replace('/(^|\(|\[|\s+)#([A-Za-z0-9_\-\.]{1,64})/e', "'\\1#'.common_tag_link('\\2')", $r);
 | |
|     // XXX: machine tags
 | |
|     return $r;
 | |
| }
 | |
| 
 | |
| function common_replace_urls_callback($text, $callback) {
 | |
|     // Start off with a regex
 | |
|     $regex = '#'.
 | |
|     '(?:'.
 | |
|         '(?:'.
 | |
|             '(?:https?|ftps?|mms|rtsp|gopher|news|nntp|telnet|wais|file|prospero|webcal|xmpp|irc)://'.
 | |
|             '|'.
 | |
|             '(?:mailto|aim|tel):'.
 | |
|         ')'.
 | |
|         '[^.\s]+\.[^\s]+'.
 | |
|         '|'.
 | |
|         '(?:[^.\s/:]+\.)+'.
 | |
|         '(?:museum|travel|[a-z]{2,4})'.
 | |
|         '(?:[:/][^\s]*)?'.
 | |
|     ')'.
 | |
|     '#ix';
 | |
|     preg_match_all($regex, $text, $matches);
 | |
| 
 | |
|     // Then clean up what the regex left behind
 | |
|     $offset = 0;
 | |
|     foreach($matches[0] as $orig_url) {
 | |
|         $url = htmlspecialchars_decode($orig_url);
 | |
| 
 | |
|         // Make sure we didn't pick up an email address
 | |
|         if (preg_match('#^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$#i', $url)) continue;
 | |
| 
 | |
|         // Remove surrounding punctuation
 | |
|         $url = trim($url, '.?!,;:\'"`([<');
 | |
| 
 | |
|         // Remove surrounding parens and the like
 | |
|         preg_match('/[)\]>]+$/', $url, $trailing);
 | |
|         if (isset($trailing[0])) {
 | |
|             preg_match_all('/[(\[<]/', $url, $opened);
 | |
|             preg_match_all('/[)\]>]/', $url, $closed);
 | |
|             $unopened = count($closed[0]) - count($opened[0]);
 | |
| 
 | |
|             // Make sure not to take off more closing parens than there are at the end
 | |
|             $unopened = ($unopened > mb_strlen($trailing[0])) ? mb_strlen($trailing[0]):$unopened;
 | |
| 
 | |
|             $url = ($unopened > 0) ? mb_substr($url, 0, $unopened * -1):$url;
 | |
|         }
 | |
| 
 | |
|         // Remove trailing punctuation again (in case there were some inside parens)
 | |
|         $url = rtrim($url, '.?!,;:\'"`');
 | |
| 
 | |
|         // Make sure we didn't capture part of the next sentence
 | |
|         preg_match('#((?:[^.\s/]+\.)+)(museum|travel|[a-z]{2,4})#i', $url, $url_parts);
 | |
| 
 | |
|         // Were the parts capitalized any?
 | |
|         $last_part = (mb_strtolower($url_parts[2]) !== $url_parts[2]) ? true:false;
 | |
|         $prev_part = (mb_strtolower($url_parts[1]) !== $url_parts[1]) ? true:false;
 | |
| 
 | |
|         // If the first part wasn't cap'd but the last part was, we captured too much
 | |
|         if ((!$prev_part && $last_part)) {
 | |
|             $url = mb_substr($url, 0 , mb_strpos($url, '.'.$url_parts['2'], 0));
 | |
|         }
 | |
| 
 | |
|         // Capture the new TLD
 | |
|         preg_match('#((?:[^.\s/]+\.)+)(museum|travel|[a-z]{2,4})#i', $url, $url_parts);
 | |
| 
 | |
|         $tlds = array('ac', 'ad', 'ae', 'aero', 'af', 'ag', 'ai', 'al', 'am', 'an', 'ao', 'aq', 'ar', 'arpa', 'as', 'asia', 'at', 'au', 'aw', 'ax', 'az', 'ba', 'bb', 'bd', 'be', 'bf', 'bg', 'bh', 'bi', 'biz', 'bj', 'bm', 'bn', 'bo', 'br', 'bs', 'bt', 'bv', 'bw', 'by', 'bz', 'ca', 'cat', 'cc', 'cd', 'cf', 'cg', 'ch', 'ci', 'ck', 'cl', 'cm', 'cn', 'co', 'com', 'coop', 'cr', 'cu', 'cv', 'cx', 'cy', 'cz', 'de', 'dj', 'dk', 'dm', 'do', 'dz', 'ec', 'edu', 'ee', 'eg', 'er', 'es', 'et', 'eu', 'fi', 'fj', 'fk', 'fm', 'fo', 'fr', 'ga', 'gb', 'gd', 'ge', 'gf', 'gg', 'gh', 'gi', 'gl', 'gm', 'gn', 'gov', 'gp', 'gq', 'gr', 'gs', 'gt', 'gu', 'gw', 'gy', 'hk', 'hm', 'hn', 'hr', 'ht', 'hu', 'id', 'ie', 'il', 'im', 'in', 'info', 'int', 'io', 'iq', 'ir', 'is', 'it', 'je', 'jm', 'jo', 'jobs', 'jp', 'ke', 'kg', 'kh', 'ki', 'km', 'kn', 'kp', 'kr', 'kw', 'ky', 'kz', 'la', 'lb', 'lc', 'li', 'lk', 'lr', 'ls', 'lt', 'lu', 'lv', 'ly', 'ma', 'mc', 'md', 'me', 'mg', 'mh', 'mil', 'mk', 'ml', 'mm', 'mn', 'mo', 'mobi', 'mp', 'mq', 'mr', 'ms', 'mt', 'mu', 'museum', 'mv', 'mw', 'mx', 'my', 'mz', 'na', 'name', 'nc', 'ne', 'net', 'nf', 'ng', 'ni', 'nl', 'no', 'np', 'nr', 'nu', 'nz', 'om', 'org', 'pa', 'pe', 'pf', 'pg', 'ph', 'pk', 'pl', 'pm', 'pn', 'pr', 'pro', 'ps', 'pt', 'pw', 'py', 'qa', 're', 'ro', 'rs', 'ru', 'rw', 'sa', 'sb', 'sc', 'sd', 'se', 'sg', 'sh', 'si', 'sj', 'sk', 'sl', 'sm', 'sn', 'so', 'sr', 'st', 'su', 'sv', 'sy', 'sz', 'tc', 'td', 'tel', 'tf', 'tg', 'th', 'tj', 'tk', 'tl', 'tm', 'tn', 'to', 'tp', 'tr', 'travel', 'tt', 'tv', 'tw', 'tz', 'ua', 'ug', 'uk', 'us', 'uy', 'uz', 'va', 'vc', 've', 'vg', 'vi', 'vn', 'vu', 'wf', 'ws', 'ye', 'yt', 'yu', 'za', 'zm', 'zw');
 | |
| 
 | |
|         if (!in_array($url_parts[2], $tlds)) continue;
 | |
| 
 | |
|         // Put the url back the way we found it.
 | |
|         $url = (mb_strpos($orig_url, htmlspecialchars($url)) === FALSE) ? $url:htmlspecialchars($url);
 | |
| 
 | |
|         // Call user specified func
 | |
|         $modified_url = $callback($url);
 | |
| 
 | |
|         // Replace it!
 | |
|         $start = mb_strpos($text, $url, $offset);
 | |
|         $text = mb_substr($text, 0, $start).$modified_url.mb_substr($text, $start + mb_strlen($url), mb_strlen($text));
 | |
|         $offset = $start + mb_strlen($modified_url);
 | |
|     }
 | |
| 
 | |
|     return $text;
 | |
| }
 | |
| 
 | |
| function common_linkify($url) {
 | |
|     // It comes in special'd, so we unspecial it before passing to the stringifying
 | |
|     // functions
 | |
|     $ext = pathinfo($url, PATHINFO_EXTENSION);
 | |
|     $url = htmlspecialchars_decode($url);
 | |
|     $video_ext = array('mp4', 'flv', 'avi', 'mpg', 'mp3', 'ogg');
 | |
|     $display = $url;
 | |
|     $url = (!preg_match('#^([a-z]+://|(mailto|aim|tel):)#i', $url)) ? 'http://'.$url : $url;
 | |
| 
 | |
|     $attrs = array('href' => $url, 'rel' => 'external');
 | |
| 
 | |
|     if (in_array($ext, $video_ext)) {
 | |
|         $attrs['class'] = 'media';
 | |
|     }
 | |
| 
 | |
|     if ($longurl = common_longurl($url)) {
 | |
|         $attrs['title'] = $longurl;
 | |
|     }
 | |
| 
 | |
|     return XMLStringer::estring('a', $attrs, $display);
 | |
| }
 | |
| 
 | |
| function common_longurl($short_url)
 | |
| {
 | |
|     $long_url = common_shorten_link($short_url, true);
 | |
|     if ($long_url === $short_url) return false;
 | |
|     return $long_url;
 | |
| }
 | |
| 
 | |
| function common_longurl2($uri)
 | |
| {
 | |
|     $uri_e = urlencode($uri);
 | |
|     $longurl = unserialize(file_get_contents("http://api.longurl.org/v1/expand?format=php&url=$uri_e"));
 | |
|     if (empty($longurl['long_url']) || $uri === $longurl['long_url']) return false;
 | |
|     return stripslashes($longurl['long_url']);
 | |
| }
 | |
| 
 | |
| function common_shorten_links($text)
 | |
| {
 | |
|     if (mb_strlen($text) <= 140) return $text;
 | |
|     static $cache = array();
 | |
|     if (isset($cache[$text])) return $cache[$text];
 | |
|     // \s = not a horizontal whitespace character (since PHP 5.2.4)
 | |
|     return $cache[$text] = common_replace_urls_callback($text, 'common_shorten_link');;
 | |
| }
 | |
| 
 | |
| function common_shorten_link($url, $reverse = false)
 | |
| {
 | |
|     static $url_cache = array();
 | |
|     if ($reverse) return isset($url_cache[$url]) ? $url_cache[$url] : $url;
 | |
| 
 | |
|     $user = common_current_user();
 | |
| 
 | |
|     $curlh = curl_init();
 | |
|     curl_setopt($curlh, CURLOPT_CONNECTTIMEOUT, 20); // # seconds to wait
 | |
|     curl_setopt($curlh, CURLOPT_USERAGENT, 'Laconica');
 | |
|     curl_setopt($curlh, CURLOPT_RETURNTRANSFER, true);
 | |
| 
 | |
|     switch($user->urlshorteningservice) {
 | |
|      case 'ur1.ca':
 | |
|         $short_url_service = new LilUrl;
 | |
|         $short_url = $short_url_service->shorten($url);
 | |
|         break;
 | |
| 
 | |
|      case '2tu.us':
 | |
|         $short_url_service = new TightUrl;
 | |
|         $short_url = $short_url_service->shorten($url);
 | |
|         break;
 | |
| 
 | |
|      case 'ptiturl.com':
 | |
|         $short_url_service = new PtitUrl;
 | |
|         $short_url = $short_url_service->shorten($url);
 | |
|         break;
 | |
| 
 | |
|      case 'bit.ly':
 | |
|         curl_setopt($curlh, CURLOPT_URL, 'http://bit.ly/api?method=shorten&long_url='.urlencode($url));
 | |
|         $short_url = current(json_decode(curl_exec($curlh))->results)->hashUrl;
 | |
|         break;
 | |
| 
 | |
|      case 'is.gd':
 | |
|         curl_setopt($curlh, CURLOPT_URL, 'http://is.gd/api.php?longurl='.urlencode($url));
 | |
|         $short_url = curl_exec($curlh);
 | |
|         break;
 | |
|      case 'snipr.com':
 | |
|         curl_setopt($curlh, CURLOPT_URL, 'http://snipr.com/site/snip?r=simple&link='.urlencode($url));
 | |
|         $short_url = curl_exec($curlh);
 | |
|         break;
 | |
|      case 'metamark.net':
 | |
|         curl_setopt($curlh, CURLOPT_URL, 'http://metamark.net/api/rest/simple?long_url='.urlencode($url));
 | |
|         $short_url = curl_exec($curlh);
 | |
|         break;
 | |
|      case 'tinyurl.com':
 | |
|         curl_setopt($curlh, CURLOPT_URL, 'http://tinyurl.com/api-create.php?url='.urlencode($url));
 | |
|         $short_url = curl_exec($curlh);
 | |
|         break;
 | |
|      default:
 | |
|         $short_url = false;
 | |
|     }
 | |
| 
 | |
|     curl_close($curlh);
 | |
| 
 | |
|     if ($short_url) {
 | |
|         $url_cache[(string)$short_url] = $url;
 | |
|         return (string)$short_url;
 | |
|     }
 | |
|     return $url;
 | |
| }
 | |
| 
 | |
| function common_xml_safe_str($str)
 | |
| {
 | |
|     $xmlStr = htmlentities(iconv('UTF-8', 'UTF-8//IGNORE', $str), ENT_NOQUOTES, 'UTF-8');
 | |
| 
 | |
|     // Replace control, formatting, and surrogate characters with '*', ala Twitter
 | |
|     return preg_replace('/[\p{Cc}\p{Cf}\p{Cs}]/u', '*', $str);
 | |
| }
 | |
| 
 | |
| function common_tag_link($tag)
 | |
| {
 | |
|     $canonical = common_canonical_tag($tag);
 | |
|     $url = common_local_url('tag', array('tag' => $canonical));
 | |
|     $xs = new XMLStringer();
 | |
|     $xs->elementStart('span', 'tag');
 | |
|     $xs->element('a', array('href' => $url,
 | |
|                             'rel' => 'tag'),
 | |
|                  $tag);
 | |
|     $xs->elementEnd('span');
 | |
|     return $xs->getString();
 | |
| }
 | |
| 
 | |
| function common_canonical_tag($tag)
 | |
| {
 | |
|     return strtolower(str_replace(array('-', '_', '.'), '', $tag));
 | |
| }
 | |
| 
 | |
| function common_valid_profile_tag($str)
 | |
| {
 | |
|     return preg_match('/^[A-Za-z0-9_\-\.]{1,64}$/', $str);
 | |
| }
 | |
| 
 | |
| function common_at_link($sender_id, $nickname)
 | |
| {
 | |
|     $sender = Profile::staticGet($sender_id);
 | |
|     $recipient = common_relative_profile($sender, common_canonical_nickname($nickname));
 | |
|     if ($recipient) {
 | |
|         $xs = new XMLStringer(false);
 | |
|         $xs->elementStart('span', 'vcard');
 | |
|         $xs->elementStart('a', array('href' => $recipient->profileurl,
 | |
|                                      'class' => 'url'));
 | |
|         $xs->element('span', 'fn nickname', $nickname);
 | |
|         $xs->elementEnd('a');
 | |
|         $xs->elementEnd('span');
 | |
|         return $xs->getString();
 | |
|     } else {
 | |
|         return $nickname;
 | |
|     }
 | |
| }
 | |
| 
 | |
| function common_group_link($sender_id, $nickname)
 | |
| {
 | |
|     $sender = Profile::staticGet($sender_id);
 | |
|     $group = User_group::staticGet('nickname', common_canonical_nickname($nickname));
 | |
|     if ($group && $sender->isMember($group)) {
 | |
|         $xs = new XMLStringer();
 | |
|         $xs->elementStart('span', 'vcard');
 | |
|         $xs->elementStart('a', array('href' => $group->permalink(),
 | |
|                                      'class' => 'url'));
 | |
|         $xs->element('span', 'fn nickname', $nickname);
 | |
|         $xs->elementEnd('a');
 | |
|         $xs->elementEnd('span');
 | |
|         return $xs->getString();
 | |
|     } else {
 | |
|         return $nickname;
 | |
|     }
 | |
| }
 | |
| 
 | |
| function common_at_hash_link($sender_id, $tag)
 | |
| {
 | |
|     $user = User::staticGet($sender_id);
 | |
|     if (!$user) {
 | |
|         return $tag;
 | |
|     }
 | |
|     $tagged = Profile_tag::getTagged($user->id, common_canonical_tag($tag));
 | |
|     if ($tagged) {
 | |
|         $url = common_local_url('subscriptions',
 | |
|                                 array('nickname' => $user->nickname,
 | |
|                                       'tag' => $tag));
 | |
|         $xs = new XMLStringer();
 | |
|         $xs->elementStart('span', 'tag');
 | |
|         $xs->element('a', array('href' => $url,
 | |
|                                 'rel' => $tag),
 | |
|                      $tag);
 | |
|         $xs->elementEnd('span');
 | |
|         return $xs->getString();
 | |
|     } else {
 | |
|         return $tag;
 | |
|     }
 | |
| }
 | |
| 
 | |
| function common_relative_profile($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 $recipient_user->getProfile();
 | |
|         }
 | |
|     }
 | |
|     // Otherwise, no links. @messages from local users to remote users,
 | |
|     // or from remote users to other remote users, are just
 | |
|     // outside our ability to make intelligent guesses about
 | |
|     return null;
 | |
| }
 | |
| 
 | |
| function common_local_url($action, $args=null, $params=null, $fragment=null)
 | |
| {
 | |
|     $r = Router::get();
 | |
|     $path = $r->build($action, $args, $params, $fragment);
 | |
|     if ($path) {
 | |
|     }
 | |
|     if (common_config('site','fancy')) {
 | |
|         $url = common_path(mb_substr($path, 1));
 | |
|     } else {
 | |
|         $url = common_path('index.php'.$path);
 | |
|     }
 | |
|     return $url;
 | |
| }
 | |
| 
 | |
| function common_path($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)
 | |
| {
 | |
|     static $_utc;
 | |
|     static $_siteTz;
 | |
| 
 | |
|     if (!$_utc) {
 | |
|         $_utc = new DateTimeZone('UTC');
 | |
|         $_siteTz = new DateTimeZone(common_timezone());
 | |
|     }
 | |
| 
 | |
|     $dateStr = date('d F Y H:i:s', strtotime($dt));
 | |
|     $d = new DateTime($dateStr, $_utc);
 | |
|     $d->setTimezone($_siteTz);
 | |
|     return $d->format(DATE_RFC850);
 | |
| }
 | |
| 
 | |
| function common_date_w3dtf($dt)
 | |
| {
 | |
|     $dateStr = date('d F Y H:i:s', strtotime($dt));
 | |
|     $d = new DateTime($dateStr, new DateTimeZone('UTC'));
 | |
|     $d->setTimezone(new DateTimeZone(common_timezone()));
 | |
|     return $d->format(DATE_W3C);
 | |
| }
 | |
| 
 | |
| function common_date_rfc2822($dt)
 | |
| {
 | |
|     $dateStr = date('d F Y H:i:s', strtotime($dt));
 | |
|     $d = new DateTime($dateStr, new DateTimeZone('UTC'));
 | |
|     $d->setTimezone(new DateTimeZone(common_timezone()));
 | |
|     return $d->format('r');
 | |
| }
 | |
| 
 | |
| function common_date_iso8601($dt)
 | |
| {
 | |
|     $dateStr = date('d F Y H:i:s', strtotime($dt));
 | |
|     $d = new DateTime($dateStr, new DateTimeZone('UTC'));
 | |
|     $d->setTimezone(new DateTimeZone(common_timezone()));
 | |
|     return $d->format('c');
 | |
| }
 | |
| 
 | |
| function common_sql_now()
 | |
| {
 | |
|     return strftime('%Y-%m-%d %H:%M:%S', time());
 | |
| }
 | |
| 
 | |
| function common_redirect($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");
 | |
| 
 | |
|     $xo = new XMLOutputter();
 | |
|     $xo->startXML('a',
 | |
|                   '-//W3C//DTD XHTML 1.0 Strict//EN',
 | |
|                   'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd');
 | |
|     $xo->element('a', array('href' => $url), $url);
 | |
|     $xo->endXML();
 | |
|     exit;
 | |
| }
 | |
| 
 | |
| function common_broadcast_notice($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)
 | |
| {
 | |
|     foreach (array('jabber', 'omb', 'sms', 'public', 'twitter', 'facebook') as $transport) {
 | |
|         $qi = new Queue_item();
 | |
|         $qi->notice_id = $notice->id;
 | |
|         $qi->transport = $transport;
 | |
|         $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 . ' for ' . $transport);
 | |
|     }
 | |
|     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 ' . $notice->id);
 | |
|         }
 | |
|     }
 | |
|     if ($success) {
 | |
|         $success = jabber_public_notice($notice);
 | |
|         if (!$success) {
 | |
|             common_log(LOG_ERR, 'Error in public broadcast for notice ' . $notice->id);
 | |
|         }
 | |
|     }
 | |
|     if ($success) {
 | |
|         $success = broadcast_twitter($notice);
 | |
|         if (!$success) {
 | |
|             common_log(LOG_ERR, 'Error in Twitter broadcast for notice ' . $notice->id);
 | |
|         }
 | |
|     }
 | |
| 
 | |
|     // XXX: Do a real-time FB broadcast here?
 | |
| 
 | |
|     // 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));
 | |
| }
 | |
| 
 | |
| // 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-\.]+)$/', $matches[1]));
 | |
|     }
 | |
|     return false;
 | |
| }
 | |
| 
 | |
| /* Following functions are copied from MediaWiki GlobalFunctions.php
 | |
|  * and written by Evan Prodromou. */
 | |
| 
 | |
| function common_accept_to_prefs($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];
 | |
|         }
 | |
|     }
 | |
| 
 | |
|     if ('text/html' === $besttype) {
 | |
|         return "text/html; charset=utf-8";
 | |
|     }
 | |
|     return $besttype;
 | |
| }
 | |
| 
 | |
| function common_config($main, $sub)
 | |
| {
 | |
|     global $config;
 | |
|     return isset($config[$main][$sub]) ? $config[$main][$sub] : false;
 | |
| }
 | |
| 
 | |
| function common_copy_args($from)
 | |
| {
 | |
|     $to = array();
 | |
|     $strip = get_magic_quotes_gpc();
 | |
|     foreach ($from as $k => $v) {
 | |
|         $to[$k] = ($strip) ? stripslashes($v) : $v;
 | |
|     }
 | |
|     return $to;
 | |
| }
 | |
| 
 | |
| // Neutralise the evil effects of magic_quotes_gpc in the current request.
 | |
| // This is used before handing a request off to OAuthRequest::from_request.
 | |
| function common_remove_magic_from_request()
 | |
| {
 | |
|     if(get_magic_quotes_gpc()) {
 | |
|         $_POST=array_map('stripslashes',$_POST);
 | |
|         $_GET=array_map('stripslashes',$_GET);
 | |
|     }
 | |
| }
 | |
| 
 | |
| 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_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 $sms;
 | |
| }
 | |
| 
 | |
| function common_error_handler($errno, $errstr, $errfile, $errline, $errcontext)
 | |
| {
 | |
|     switch ($errno) {
 | |
|      case E_USER_ERROR:
 | |
|         common_log(LOG_ERR, "[$errno] $errstr ($errfile:$errline)");
 | |
|         exit(1);
 | |
|         break;
 | |
| 
 | |
|      case E_USER_WARNING:
 | |
|         common_log(LOG_WARNING, "[$errno] $errstr ($errfile:$errline)");
 | |
|         break;
 | |
| 
 | |
|      case E_USER_NOTICE:
 | |
|         common_log(LOG_NOTICE, "[$errno] $errstr ($errfile:$errline)");
 | |
|         break;
 | |
|     }
 | |
| 
 | |
|     // FIXME: show error page if we're on the Web
 | |
|     /* Don't execute PHP internal error handler */
 | |
|     return true;
 | |
| }
 | |
| 
 | |
| function common_session_token()
 | |
| {
 | |
|     common_ensure_session();
 | |
|     if (!array_key_exists('token', $_SESSION)) {
 | |
|         $_SESSION['token'] = common_good_rand(64);
 | |
|     }
 | |
|     return $_SESSION['token'];
 | |
| }
 | |
| 
 | |
| function common_cache_key($extra)
 | |
| {
 | |
|     return 'laconica:' . common_keyize(common_config('site', 'name')) . ':' . $extra;
 | |
| }
 | |
| 
 | |
| function common_keyize($str)
 | |
| {
 | |
|     $str = strtolower($str);
 | |
|     $str = preg_replace('/\s/', '_', $str);
 | |
|     return $str;
 | |
| }
 | |
| 
 | |
| function common_memcache()
 | |
| {
 | |
|     static $cache = null;
 | |
|     if (!common_config('memcached', 'enabled')) {
 | |
|         return null;
 | |
|     } else {
 | |
|         if (!$cache) {
 | |
|             $cache = new Memcache();
 | |
|             $servers = common_config('memcached', 'server');
 | |
|             if (is_array($servers)) {
 | |
|                 foreach($servers as $server) {
 | |
|                     $cache->addServer($server);
 | |
|                 }
 | |
|             } else {
 | |
|                 $cache->addServer($servers);
 | |
|             }
 | |
|         }
 | |
|         return $cache;
 | |
|     }
 | |
| }
 | |
| 
 | |
| function common_compatible_license($from, $to)
 | |
| {
 | |
|     // XXX: better compatibility check needed here!
 | |
|     return ($from == $to);
 | |
| }
 |