3 * StatusNet - the distributed open-source microblogging tool
4 * Copyright (C) 2008, 2009, StatusNet, Inc.
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU Affero General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU Affero General Public License for more details.
16 * You should have received a copy of the GNU Affero General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 /* XXX: break up into separate modules (HTTP, user, files) */
22 // Show a server error
24 function common_server_error($msg, $code=500)
26 $err = new ServerErrorAction($msg, $code);
31 function common_user_error($msg, $code=400)
33 $err = new ClientErrorAction($msg, $code);
37 function common_init_locale($language=null)
40 $language = common_language();
42 putenv('LANGUAGE='.$language);
43 putenv('LANG='.$language);
44 $ok = setlocale(LC_ALL, $language . ".utf8",
53 function common_init_language()
55 mb_internal_encoding('UTF-8');
57 // Note that this setlocale() call may "fail" but this is harmless;
58 // gettext will still select the right language.
59 $language = common_language();
60 $locale_set = common_init_locale($language);
63 // The requested locale doesn't exist on the system.
65 // gettext seems very picky... We first need to setlocale()
66 // to a locale which _does_ exist on the system, and _then_
67 // we can set in another locale that may not be set up
68 // (say, ga_ES for Galego/Galician) it seems to take it.
70 // For some reason C and POSIX which are guaranteed to work
71 // don't do the job. en_US.UTF-8 should be there most of the
72 // time, but not guaranteed.
73 $ok = common_init_locale("en_US");
75 // Try to find a complete, working locale...
76 // @fixme shelling out feels awfully inefficient
77 // but I don't think there's a more standard way.
79 foreach (explode("\n", $all) as $locale) {
80 if (preg_match('/\.utf[-_]?8$/i', $locale)) {
81 $ok = setlocale(LC_ALL, $locale);
88 common_log(LOG_ERR, "Unable to find a UTF-8 locale on this system; UI translations may not work.");
91 $locale_set = common_init_locale($language);
94 common_init_gettext();
100 function common_init_gettext()
102 setlocale(LC_CTYPE, 'C');
103 // So we do not have to make people install the gettext locales
104 $path = common_config('site','locale_path');
105 bindtextdomain("statusnet", $path);
106 bind_textdomain_codeset("statusnet", "UTF-8");
107 textdomain("statusnet");
111 * Switch locale during runtime, and poke gettext until it cries uncle.
112 * Otherwise, sometimes it doesn't actually switch away from the old language.
114 * @param string $language code for locale ('en', 'fr', 'pt_BR' etc)
116 function common_switch_locale($language=null)
118 common_init_locale($language);
120 setlocale(LC_CTYPE, 'C');
121 // So we do not have to make people install the gettext locales
122 $path = common_config('site','locale_path');
123 bindtextdomain("statusnet", $path);
124 bind_textdomain_codeset("statusnet", "UTF-8");
125 textdomain("statusnet");
129 function common_timezone()
131 if (common_logged_in()) {
132 $user = common_current_user();
133 if ($user->timezone) {
134 return $user->timezone;
138 return common_config('site', 'timezone');
141 function common_valid_language($lang)
144 // Validate -- we don't want to end up with a bogus code
145 // left over from some old junk.
146 foreach (common_config('site', 'languages') as $code => $info) {
147 if ($info['lang'] == $lang) {
155 function common_language()
157 // Allow ?uselang=xx override, very useful for debugging
158 // and helping translators check usage and context.
159 if (isset($_GET['uselang'])) {
160 $uselang = strval($_GET['uselang']);
161 if (common_valid_language($uselang)) {
166 // If there is a user logged in and they've set a language preference
167 // then return that one...
168 if (_have_config() && common_logged_in()) {
169 $user = common_current_user();
171 if (common_valid_language($user->language)) {
172 return $user->language;
176 // Otherwise, find the best match for the languages requested by the
178 if (common_config('site', 'langdetect')) {
179 $httplang = isset($_SERVER['HTTP_ACCEPT_LANGUAGE']) ? $_SERVER['HTTP_ACCEPT_LANGUAGE'] : null;
180 if (!empty($httplang)) {
181 $language = client_prefered_language($httplang);
187 // Finally, if none of the above worked, use the site's default...
188 return common_config('site', 'language');
190 // salted, hashed passwords are stored in the DB
192 function common_munge_password($password, $id)
194 if (is_object($id) || is_object($password)) {
195 $e = new Exception();
196 common_log(LOG_ERR, __METHOD__ . ' object in param to common_munge_password ' .
197 str_replace("\n", " ", $e->getTraceAsString()));
199 return md5($password . $id);
202 // check if a username exists and has matching password
204 function common_check_user($nickname, $password)
206 // empty nickname always unacceptable
207 if (empty($nickname)) {
211 $authenticatedUser = false;
213 if (Event::handle('StartCheckPassword', array($nickname, $password, &$authenticatedUser))) {
214 $user = User::staticGet('nickname', common_canonical_nickname($nickname));
216 if (!empty($password)) { // never allow login with blank password
217 if (0 == strcmp(common_munge_password($password, $user->id),
219 //internal checking passed
220 $authenticatedUser = $user;
224 Event::handle('EndCheckPassword', array($nickname, $password, $authenticatedUser));
227 return $authenticatedUser;
230 // is the current user logged in?
231 function common_logged_in()
233 return (!is_null(common_current_user()));
236 function common_have_session()
238 return (0 != strcmp(session_id(), ''));
241 function common_ensure_session()
244 if (array_key_exists(session_name(), $_COOKIE)) {
245 $c = $_COOKIE[session_name()];
247 if (!common_have_session()) {
248 if (common_config('sessions', 'handle')) {
249 Session::setSaveHandler();
251 if (array_key_exists(session_name(), $_GET)) {
252 $id = $_GET[session_name()];
253 } else if (array_key_exists(session_name(), $_COOKIE)) {
254 $id = $_COOKIE[session_name()];
260 if (!isset($_SESSION['started'])) {
261 $_SESSION['started'] = time();
263 common_log(LOG_WARNING, 'Session cookie "' . $_COOKIE[session_name()] . '" ' .
264 ' is set but started value is null');
270 // Three kinds of arguments:
275 // Initialize to false; set to null if none found
279 function common_set_user($user)
284 if (is_null($user) && common_have_session()) {
286 unset($_SESSION['userid']);
288 } else if (is_string($user)) {
290 $user = User::staticGet('nickname', $nickname);
291 } else if (!($user instanceof User)) {
296 if (Event::handle('StartSetUser', array(&$user))) {
298 common_ensure_session();
299 $_SESSION['userid'] = $user->id;
301 Event::handle('EndSetUser', array($user));
309 function common_set_cookie($key, $value, $expiration=0)
311 $path = common_config('site', 'path');
312 $server = common_config('site', 'server');
314 if ($path && ($path != '/')) {
315 $cookiepath = '/' . $path . '/';
319 return setcookie($key,
326 define('REMEMBERME', 'rememberme');
327 define('REMEMBERME_EXPIRY', 30 * 24 * 60 * 60); // 30 days
329 function common_rememberme($user=null)
332 $user = common_current_user();
338 $rm = new Remember_me();
340 $rm->code = common_good_rand(16);
341 $rm->user_id = $user->id;
343 // Wrap the insert in some good ol' fashioned transaction code
347 $result = $rm->insert();
350 common_log_db_error($rm, 'INSERT', __FILE__);
354 $rm->query('COMMIT');
356 $cookieval = $rm->user_id . ':' . $rm->code;
358 common_log(LOG_INFO, 'adding rememberme cookie "' . $cookieval . '" for ' . $user->nickname);
360 common_set_cookie(REMEMBERME, $cookieval, time() + REMEMBERME_EXPIRY);
365 function common_remembered_user()
370 $packed = isset($_COOKIE[REMEMBERME]) ? $_COOKIE[REMEMBERME] : null;
376 list($id, $code) = explode(':', $packed);
378 if (!$id || !$code) {
379 common_log(LOG_WARNING, 'Malformed rememberme cookie: ' . $packed);
384 $rm = Remember_me::staticGet($code);
387 common_log(LOG_WARNING, 'No such remember code: ' . $code);
392 if ($rm->user_id != $id) {
393 common_log(LOG_WARNING, 'Rememberme code for wrong user: ' . $rm->user_id . ' != ' . $id);
398 $user = User::staticGet($rm->user_id);
401 common_log(LOG_WARNING, 'No such user for rememberme: ' . $rm->user_id);
407 $result = $rm->delete();
410 common_log_db_error($rm, 'DELETE', __FILE__);
411 common_log(LOG_WARNING, 'Could not delete rememberme: ' . $code);
416 common_log(LOG_INFO, 'logging in ' . $user->nickname . ' using rememberme code ' . $rm->code);
418 common_set_user($user);
419 common_real_login(false);
421 // We issue a new cookie, so they can log in
422 // automatically again after this session
424 common_rememberme($user);
429 // must be called with a valid user!
431 function common_forgetme()
433 common_set_cookie(REMEMBERME, '', 0);
436 // who is the current user?
437 function common_current_user()
441 if (!_have_config()) {
445 if ($_cur === false) {
447 if (isset($_COOKIE[session_name()]) || isset($_GET[session_name()])
448 || (isset($_SESSION['userid']) && $_SESSION['userid'])) {
449 common_ensure_session();
450 $id = isset($_SESSION['userid']) ? $_SESSION['userid'] : false;
452 $user = User::staticGet($id);
460 // that didn't work; try to remember; will init $_cur to null on failure
461 $_cur = common_remembered_user();
464 // XXX: Is this necessary?
465 $_SESSION['userid'] = $_cur->id;
472 // Logins that are 'remembered' aren't 'real' -- they're subject to
473 // cookie-stealing. So, we don't let them do certain things. New reg,
474 // OpenID, and password logins _are_ real.
476 function common_real_login($real=true)
478 common_ensure_session();
479 $_SESSION['real_login'] = $real;
482 function common_is_real_login()
484 return common_logged_in() && $_SESSION['real_login'];
487 // get canonical version of nickname for comparison
488 function common_canonical_nickname($nickname)
490 // XXX: UTF-8 canonicalization (like combining chars)
491 return strtolower($nickname);
494 // get canonical version of email for comparison
495 function common_canonical_email($email)
497 // XXX: canonicalize UTF-8
498 // XXX: lcase the domain part
502 function common_render_content($text, $notice)
504 $r = common_render_text($text);
505 $id = $notice->profile_id;
506 $r = common_linkify_mentions($r, $notice);
507 $r = preg_replace('/(^|[\s\.\,\:\;]+)!([A-Za-z0-9]{1,64})/e', "'\\1!'.common_group_link($id, '\\2')", $r);
511 function common_linkify_mentions($text, $notice)
513 $mentions = common_find_mentions($text, $notice);
515 // We need to go through in reverse order by position,
516 // so our positions stay valid despite our fudging with the
521 foreach ($mentions as $mention)
523 $points[$mention['position']] = $mention;
528 foreach ($points as $position => $mention) {
530 $linkText = common_linkify_mention($mention);
532 $text = substr_replace($text, $linkText, $position, mb_strlen($mention['text']));
538 function common_linkify_mention($mention)
542 if (Event::handle('StartLinkifyMention', array($mention, &$output))) {
544 $xs = new XMLStringer(false);
546 $attrs = array('href' => $mention['url'],
549 if (!empty($mention['title'])) {
550 $attrs['title'] = $mention['title'];
553 $xs->elementStart('span', 'vcard');
554 $xs->elementStart('a', $attrs);
555 $xs->element('span', 'fn nickname', $mention['text']);
556 $xs->elementEnd('a');
557 $xs->elementEnd('span');
559 $output = $xs->getString();
561 Event::handle('EndLinkifyMention', array($mention, &$output));
567 function common_find_mentions($text, $notice)
571 $sender = Profile::staticGet('id', $notice->profile_id);
573 if (empty($sender)) {
577 if (Event::handle('StartFindMentions', array($sender, $text, &$mentions))) {
579 // Get the context of the original notice, if any
581 $originalAuthor = null;
582 $originalNotice = null;
583 $originalMentions = array();
587 if (!empty($notice) && !empty($notice->reply_to)) {
588 $originalNotice = Notice::staticGet('id', $notice->reply_to);
589 if (!empty($originalNotice)) {
590 $originalAuthor = Profile::staticGet('id', $originalNotice->profile_id);
592 $ids = $originalNotice->getReplies();
594 foreach ($ids as $id) {
595 $repliedTo = Profile::staticGet('id', $id);
596 if (!empty($repliedTo)) {
597 $originalMentions[$repliedTo->nickname] = $repliedTo;
603 preg_match_all('/^T ([A-Z0-9]{1,64}) /',
606 PREG_OFFSET_CAPTURE);
608 preg_match_all('/(?:^|\s+)@(['.NICKNAME_FMT.']{1,64})/',
611 PREG_OFFSET_CAPTURE);
613 $matches = array_merge($tmatches[1], $atmatches[1]);
615 foreach ($matches as $match) {
617 $nickname = common_canonical_nickname($match[0]);
619 // Try to get a profile for this nickname.
620 // Start with conversation context, then go to
623 if (!empty($originalAuthor) && $originalAuthor->nickname == $nickname) {
625 $mentioned = $originalAuthor;
627 } else if (!empty($originalMentions) &&
628 array_key_exists($nickname, $originalMentions)) {
630 $mentioned = $originalMentions[$nickname];
632 $mentioned = common_relative_profile($sender, $nickname);
635 if (!empty($mentioned)) {
637 $user = User::staticGet('id', $mentioned->id);
640 $url = common_local_url('userbyid', array('id' => $user->id));
642 $url = $mentioned->profileurl;
645 $mention = array('mentioned' => array($mentioned),
647 'position' => $match[1],
650 if (!empty($mentioned->fullname)) {
651 $mention['title'] = $mentioned->fullname;
654 $mentions[] = $mention;
658 // @#tag => mention of all subscriptions tagged 'tag'
660 preg_match_all('/(?:^|[\s\.\,\:\;]+)@#([\pL\pN_\-\.]{1,64})/',
663 PREG_OFFSET_CAPTURE);
665 foreach ($hmatches[1] as $hmatch) {
667 $tag = common_canonical_tag($hmatch[0]);
669 $tagged = Profile_tag::getTagged($sender->id, $tag);
671 $url = common_local_url('subscriptions',
672 array('nickname' => $sender->nickname,
675 $mentions[] = array('mentioned' => $tagged,
676 'text' => $hmatch[0],
677 'position' => $hmatch[1],
681 Event::handle('EndFindMentions', array($sender, $text, &$mentions));
687 function common_render_text($text)
689 $r = htmlspecialchars($text);
691 $r = preg_replace('/[\x{0}-\x{8}\x{b}-\x{c}\x{e}-\x{19}]/', '', $r);
692 $r = common_replace_urls_callback($r, 'common_linkify');
693 $r = preg_replace('/(^|\"\;|\'|\(|\[|\{|\s+)#([\pL\pN_\-\.]{1,64})/e', "'\\1#'.common_tag_link('\\2')", $r);
698 function common_replace_urls_callback($text, $callback, $notice_id = null) {
699 // Start off with a regex
701 '(?:^|[\s\<\>\(\)\[\]\{\}\\\'\\\";]+)(?![\@\!\#])'.
704 '(?:'. //Known protocols
706 '(?:(?:https?|ftps?|mms|rtsp|gopher|news|nntp|telnet|wais|file|prospero|webcal|irc)://)'.
708 '(?:(?:mailto|aim|tel|xmpp):)'.
710 '(?:[\pN\pL\-\_\+\%\~]+(?::[\pN\pL\-\_\+\%\~]+)?\@)?'. //user:pass@
713 '\[[\pN\pL\-\_\:\.]+(?<![\.\:])\]'. //[dns]
715 '[\pN\pL\-\_\:\.]+(?<![\.\:])'. //dns
719 '|(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)'. //IPv4
721 '\[?(?:(?:(?:[0-9A-Fa-f]{1,4}:){7}(?:(?:[0-9A-Fa-f]{1,4})|:))|(?:(?:[0-9A-Fa-f]{1,4}:){6}(?::|(?:(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})(?:\.(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})|(?::[0-9A-Fa-f]{1,4})))|(?:(?:[0-9A-Fa-f]{1,4}:){5}(?:(?::(?:(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})(?:\.(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})?)|(?:(?::[0-9A-Fa-f]{1,4}){1,2})))|(?:(?:[0-9A-Fa-f]{1,4}:){4}(?::[0-9A-Fa-f]{1,4}){0,1}(?:(?::(?:(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})(?:\.(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})?)|(?:(?::[0-9A-Fa-f]{1,4}){1,2})))|(?:(?:[0-9A-Fa-f]{1,4}:){3}(?::[0-9A-Fa-f]{1,4}){0,2}(?:(?::(?:(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})(?:\.(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})?)|(?:(?::[0-9A-Fa-f]{1,4}){1,2})))|(?:(?:[0-9A-Fa-f]{1,4}:){2}(?::[0-9A-Fa-f]{1,4}){0,3}(?:(?::(?:(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})(?:\.(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})?)|(?:(?::[0-9A-Fa-f]{1,4}){1,2})))|(?:(?:[0-9A-Fa-f]{1,4}:)(?::[0-9A-Fa-f]{1,4}){0,4}(?:(?::(?:(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})(?:\.(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})?)|(?:(?::[0-9A-Fa-f]{1,4}){1,2})))|(?::(?::[0-9A-Fa-f]{1,4}){0,5}(?:(?::(?:(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})(?:\.(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})?)|(?:(?::[0-9A-Fa-f]{1,4}){1,2})))|(?:(?:(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})(?:\.(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})))\]?(?<!:)'.
723 '(?:[\pN\pL\-\_\+\%\~]+(?:\:[\pN\pL\-\_\+\%\~]+)?\@)?'. //user:pass@
724 '[\pN\pL\-\_]+(?:\.[\pN\pL\-\_]+)*\.'.
725 //tld list from http://data.iana.org/TLD/tlds-alpha-by-domain.txt, also added local, loc, and onion
726 '(?: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|XN--0ZWM56D|测试|XN--11B5BS3A9AJ6G|परीक्षा|XN--80AKHBYKNJ4F|испытание|XN--9T4B11YI5A|테스트|XN--DEBA0AD|טעסט|XN--G6W251D|測試|XN--HGBK6AJ7F53BBA|آزمایشی|XN--HLCJ6AYA9ESC7A|பரிட்சை|XN--JXALPDLP|δοκιμή|XN--KGBECHTV|إختبار|XN--ZCKZAH|テスト|YE|YT|YU|ZA|ZM|ZW|local|loc|onion)'.
730 '(?:\:\d+)?'. //:port
731 '(?:/[\pN\pL$\,\!\(\)\.\:\-\_\+\/\=\&\;\%\~\*\$\+\'@]*)?'. // /path
732 '(?:\?[\pN\pL\$\,\!\(\)\.\:\-\_\+\/\=\&\;\%\~\*\$\+\'@\/]*)?'. // ?query string
733 '(?:\#[\pN\pL$\,\!\(\)\.\:\-\_\+\/\=\&\;\%\~\*\$\+\'\@/\?\#]*)?'. // #fragment
734 ')(?<![\?\.\,\#\,])'.
737 //preg_match_all($regex,$text,$matches);
739 return preg_replace_callback($regex, curry('callback_helper',$callback,$notice_id) ,$text);
742 function callback_helper($matches, $callback, $notice_id) {
744 $left = strpos($matches[0],$url);
745 $right = $left+strlen($url);
747 $groupSymbolSets=array(
765 $cannotEndWith=array('.','?',',','#');
769 foreach($groupSymbolSets as $groupSymbolSet){
770 if(substr($url,-1)==$groupSymbolSet['right']){
771 $group_left_count = substr_count($url,$groupSymbolSet['left']);
772 $group_right_count = substr_count($url,$groupSymbolSet['right']);
773 if($group_left_count<$group_right_count){
775 $url=substr($url,0,-1);
779 if(in_array(substr($url,-1),$cannotEndWith)){
781 $url=substr($url,0,-1);
783 }while($original_url!=$url);
785 if(empty($notice_id)){
786 $result = call_user_func_array($callback, array($url));
788 $result = call_user_func_array($callback, array(array($url,$notice_id)) );
790 return substr($matches[0],0,$left) . $result . substr($matches[0],$right);
793 if (version_compare(PHP_VERSION, '5.3.0', 'ge')) {
794 // lambda implementation in a separate file; PHP 5.2 won't parse it.
795 require_once INSTALLDIR . "/lib/curry.php";
797 function curry($fn) {
798 $args = func_get_args();
800 $id = uniqid('_partial');
801 $GLOBALS[$id] = array($fn, $args);
802 return create_function('',
803 '$args = func_get_args(); '.
804 'return call_user_func_array('.
805 '$GLOBALS["'.$id.'"][0],'.
808 '$GLOBALS["'.$id.'"][1]));');
812 function common_linkify($url) {
813 // It comes in special'd, so we unspecial it before passing to the stringifying
815 $url = htmlspecialchars_decode($url);
817 if(strpos($url, '@') !== false && strpos($url, ':') === false) {
818 //url is an email address without the mailto: protocol
819 $canon = "mailto:$url";
820 $longurl = "mailto:$url";
823 $canon = File_redirection::_canonUrl($url);
825 $longurl_data = File_redirection::where($canon);
826 if (is_array($longurl_data)) {
827 $longurl = $longurl_data['url'];
828 } elseif (is_string($longurl_data)) {
829 $longurl = $longurl_data;
831 throw new ServerException("Can't linkify url '$url'");
834 $attrs = array('href' => $canon, 'title' => $longurl, 'rel' => 'external');
836 $is_attachment = false;
837 $attachment_id = null;
840 // Check to see whether this is a known "attachment" URL.
842 $f = File::staticGet('url', $longurl);
845 // XXX: this writes to the database. :<
846 $f = File::processNew($longurl);
850 if ($f->getEnclosure() || File_oembed::staticGet('file_id',$f->id)) {
851 $is_attachment = true;
852 $attachment_id = $f->id;
854 $thumb = File_thumbnail::staticGet('file_id', $f->id);
855 if (!empty($thumb)) {
862 if ($is_attachment) {
863 $attrs['class'] = 'attachment';
865 $attrs['class'] = 'attachment thumbnail';
867 $attrs['id'] = "attachment-{$attachment_id}";
870 return XMLStringer::estring('a', $attrs, $url);
873 function common_shorten_links($text, $always = false)
875 common_debug("common_shorten_links() called");
877 $user = common_current_user();
879 $maxLength = User_urlshortener_prefs::maxNoticeLength($user);
881 common_debug("maxLength = $maxLength");
883 if ($always || mb_strlen($text) > $maxLength) {
884 common_debug("Forcing shortening");
885 return common_replace_urls_callback($text, array('File_redirection', 'forceShort'));
887 common_debug("Not forcing shortening");
888 return common_replace_urls_callback($text, array('File_redirection', 'makeShort'));
892 function common_xml_safe_str($str)
894 // Replace common eol and extra whitespace input chars
899 "\0", // null byte eos
900 "\x0B" // vertical tab
903 $replacement = array(
911 $str = str_replace($unWelcome, $replacement, $str);
913 // Neutralize any additional control codes and UTF-16 surrogates
914 // (Twitter uses '*')
915 return preg_replace('/[\p{Cc}\p{Cs}]/u', '*', $str);
918 function common_tag_link($tag)
920 $canonical = common_canonical_tag($tag);
921 if (common_config('singleuser', 'enabled')) {
922 // regular TagAction isn't set up in 1user mode
923 $url = common_local_url('showstream',
924 array('nickname' => common_config('singleuser', 'nickname'),
925 'tag' => $canonical));
927 $url = common_local_url('tag', array('tag' => $canonical));
929 $xs = new XMLStringer();
930 $xs->elementStart('span', 'tag');
931 $xs->element('a', array('href' => $url,
934 $xs->elementEnd('span');
935 return $xs->getString();
938 function common_canonical_tag($tag)
940 $tag = mb_convert_case($tag, MB_CASE_LOWER, "UTF-8");
941 return str_replace(array('-', '_', '.'), '', $tag);
944 function common_valid_profile_tag($str)
946 return preg_match('/^[A-Za-z0-9_\-\.]{1,64}$/', $str);
949 function common_group_link($sender_id, $nickname)
951 $sender = Profile::staticGet($sender_id);
952 $group = User_group::getForNickname($nickname, $sender);
953 if ($sender && $group && $sender->isMember($group)) {
954 $attrs = array('href' => $group->permalink(),
956 if (!empty($group->fullname)) {
957 $attrs['title'] = $group->fullname . ' (' . $group->nickname . ')';
959 $xs = new XMLStringer();
960 $xs->elementStart('span', 'vcard');
961 $xs->elementStart('a', $attrs);
962 $xs->element('span', 'fn nickname', $nickname);
963 $xs->elementEnd('a');
964 $xs->elementEnd('span');
965 return $xs->getString();
971 function common_relative_profile($sender, $nickname, $dt=null)
973 // Try to find profiles this profile is subscribed to that have this nickname
974 $recipient = new Profile();
975 // XXX: use a join instead of a subquery
976 $recipient->whereAdd('EXISTS (SELECT subscribed from subscription where subscriber = '.$sender->id.' and subscribed = id)', 'AND');
977 $recipient->whereAdd("nickname = '" . trim($nickname) . "'", 'AND');
978 if ($recipient->find(true)) {
979 // XXX: should probably differentiate between profiles with
980 // the same name by date of most recent update
983 // Try to find profiles that listen to this profile and that have this nickname
984 $recipient = new Profile();
985 // XXX: use a join instead of a subquery
986 $recipient->whereAdd('EXISTS (SELECT subscriber from subscription where subscribed = '.$sender->id.' and subscriber = id)', 'AND');
987 $recipient->whereAdd("nickname = '" . trim($nickname) . "'", 'AND');
988 if ($recipient->find(true)) {
989 // XXX: should probably differentiate between profiles with
990 // the same name by date of most recent update
993 // If this is a local user, try to find a local user with that nickname.
994 $sender = User::staticGet($sender->id);
996 $recipient_user = User::staticGet('nickname', $nickname);
997 if ($recipient_user) {
998 return $recipient_user->getProfile();
1001 // Otherwise, no links. @messages from local users to remote users,
1002 // or from remote users to other remote users, are just
1003 // outside our ability to make intelligent guesses about
1007 function common_local_url($action, $args=null, $params=null, $fragment=null, $addSession=true)
1010 $path = $r->build($action, $args, $params, $fragment);
1012 $ssl = common_is_sensitive($action);
1014 if (common_config('site','fancy')) {
1015 $url = common_path(mb_substr($path, 1), $ssl, $addSession);
1017 if (mb_strpos($path, '/index.php') === 0) {
1018 $url = common_path(mb_substr($path, 1), $ssl, $addSession);
1020 $url = common_path('index.php'.$path, $ssl, $addSession);
1026 function common_is_sensitive($action)
1028 static $sensitive = array('login', 'register', 'passwordsettings',
1029 'twittersettings', 'api');
1032 if (Event::handle('SensitiveAction', array($action, &$ssl))) {
1033 $ssl = in_array($action, $sensitive);
1039 function common_path($relative, $ssl=false, $addSession=true)
1041 $pathpart = (common_config('site', 'path')) ? common_config('site', 'path')."/" : '';
1043 if (($ssl && (common_config('site', 'ssl') === 'sometimes'))
1044 || common_config('site', 'ssl') === 'always') {
1046 if (is_string(common_config('site', 'sslserver')) &&
1047 mb_strlen(common_config('site', 'sslserver')) > 0) {
1048 $serverpart = common_config('site', 'sslserver');
1049 } else if (common_config('site', 'server')) {
1050 $serverpart = common_config('site', 'server');
1052 common_log(LOG_ERR, 'Site server not configured, unable to determine site name.');
1056 if (common_config('site', 'server')) {
1057 $serverpart = common_config('site', 'server');
1059 common_log(LOG_ERR, 'Site server not configured, unable to determine site name.');
1064 $relative = common_inject_session($relative, $serverpart);
1067 return $proto.'://'.$serverpart.'/'.$pathpart.$relative;
1070 function common_inject_session($url, $serverpart = null)
1072 if (common_have_session()) {
1074 if (empty($serverpart)) {
1075 $serverpart = parse_url($url, PHP_URL_HOST);
1078 $currentServer = $_SERVER['HTTP_HOST'];
1080 // Are we pointing to another server (like an SSL server?)
1082 if (!empty($currentServer) &&
1083 0 != strcasecmp($currentServer, $serverpart)) {
1084 // Pass the session ID as a GET parameter
1085 $sesspart = session_name() . '=' . session_id();
1086 $i = strpos($url, '?');
1087 if ($i === false) { // no GET params, just append
1088 $url .= '?' . $sesspart;
1090 $url = substr($url, 0, $i + 1).$sesspart.'&'.substr($url, $i + 1);
1098 function common_date_string($dt)
1100 // XXX: do some sexy date formatting
1101 // return date(DATE_RFC822, $dt);
1102 $t = strtotime($dt);
1106 if ($now < $t) { // that shouldn't happen!
1107 return common_exact_date($dt);
1108 } else if ($diff < 60) {
1109 // TRANS: Used in notices to indicate when the notice was made compared to now.
1110 return _('a few seconds ago');
1111 } else if ($diff < 92) {
1112 // TRANS: Used in notices to indicate when the notice was made compared to now.
1113 return _('about a minute ago');
1114 } else if ($diff < 3300) {
1115 // XXX: should support plural.
1116 // TRANS: Used in notices to indicate when the notice was made compared to now.
1117 return sprintf(_('about %d minutes ago'), round($diff/60));
1118 } else if ($diff < 5400) {
1119 // TRANS: Used in notices to indicate when the notice was made compared to now.
1120 return _('about an hour ago');
1121 } else if ($diff < 22 * 3600) {
1122 // XXX: should support plural.
1123 // TRANS: Used in notices to indicate when the notice was made compared to now.
1124 return sprintf(_('about %d hours ago'), round($diff/3600));
1125 } else if ($diff < 37 * 3600) {
1126 // TRANS: Used in notices to indicate when the notice was made compared to now.
1127 return _('about a day ago');
1128 } else if ($diff < 24 * 24 * 3600) {
1129 // XXX: should support plural.
1130 // TRANS: Used in notices to indicate when the notice was made compared to now.
1131 return sprintf(_('about %d days ago'), round($diff/(24*3600)));
1132 } else if ($diff < 46 * 24 * 3600) {
1133 // TRANS: Used in notices to indicate when the notice was made compared to now.
1134 return _('about a month ago');
1135 } else if ($diff < 330 * 24 * 3600) {
1136 // XXX: should support plural.
1137 // TRANS: Used in notices to indicate when the notice was made compared to now.
1138 return sprintf(_('about %d months ago'), round($diff/(30*24*3600)));
1139 } else if ($diff < 480 * 24 * 3600) {
1140 // TRANS: Used in notices to indicate when the notice was made compared to now.
1141 return _('about a year ago');
1143 return common_exact_date($dt);
1147 function common_exact_date($dt)
1153 $_utc = new DateTimeZone('UTC');
1154 $_siteTz = new DateTimeZone(common_timezone());
1157 $dateStr = date('d F Y H:i:s', strtotime($dt));
1158 $d = new DateTime($dateStr, $_utc);
1159 $d->setTimezone($_siteTz);
1160 return $d->format(DATE_RFC850);
1163 function common_date_w3dtf($dt)
1165 $dateStr = date('d F Y H:i:s', strtotime($dt));
1166 $d = new DateTime($dateStr, new DateTimeZone('UTC'));
1167 $d->setTimezone(new DateTimeZone(common_timezone()));
1168 return $d->format(DATE_W3C);
1171 function common_date_rfc2822($dt)
1173 $dateStr = date('d F Y H:i:s', strtotime($dt));
1174 $d = new DateTime($dateStr, new DateTimeZone('UTC'));
1175 $d->setTimezone(new DateTimeZone(common_timezone()));
1176 return $d->format('r');
1179 function common_date_iso8601($dt)
1181 $dateStr = date('d F Y H:i:s', strtotime($dt));
1182 $d = new DateTime($dateStr, new DateTimeZone('UTC'));
1183 $d->setTimezone(new DateTimeZone(common_timezone()));
1184 return $d->format('c');
1187 function common_sql_now()
1189 return common_sql_date(time());
1192 function common_sql_date($datetime)
1194 return strftime('%Y-%m-%d %H:%M:%S', $datetime);
1198 * Return an SQL fragment to calculate an age-based weight from a given
1199 * timestamp or datetime column.
1201 * @param string $column name of field we're comparing against current time
1202 * @param integer $dropoff divisor for age in seconds before exponentiation
1203 * @return string SQL fragment
1205 function common_sql_weight($column, $dropoff)
1207 if (common_config('db', 'type') == 'pgsql') {
1208 // PostgreSQL doesn't support timestampdiff function.
1209 // @fixme will this use the right time zone?
1210 // @fixme does this handle cross-year subtraction correctly?
1211 return "sum(exp(-extract(epoch from (now() - $column)) / $dropoff))";
1213 return "sum(exp(timestampdiff(second, utc_timestamp(), $column) / $dropoff))";
1217 function common_redirect($url, $code=307)
1219 static $status = array(301 => "Moved Permanently",
1222 307 => "Temporary Redirect");
1224 header('HTTP/1.1 '.$code.' '.$status[$code]);
1225 header("Location: $url");
1227 $xo = new XMLOutputter();
1229 '-//W3C//DTD XHTML 1.0 Strict//EN',
1230 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd');
1231 $xo->element('a', array('href' => $url), $url);
1236 function common_broadcast_notice($notice, $remote=false)
1241 // Stick the notice on the queue
1243 function common_enqueue_notice($notice)
1245 static $localTransports = array('omb',
1248 $transports = array();
1249 if (common_config('sms', 'enabled')) {
1250 $transports[] = 'sms';
1252 if (Event::hasHandler('HandleQueuedNotice')) {
1253 $transports[] = 'plugin';
1256 // @fixme move these checks into QueueManager and/or individual handlers
1257 if ($notice->is_local == Notice::LOCAL_PUBLIC ||
1258 $notice->is_local == Notice::LOCAL_NONPUBLIC) {
1259 $transports = array_merge($transports, $localTransports);
1262 if (Event::handle('StartEnqueueNotice', array($notice, &$transports))) {
1264 $qm = QueueManager::get();
1266 foreach ($transports as $transport)
1268 $qm->enqueue($notice, $transport);
1271 Event::handle('EndEnqueueNotice', array($notice, $transports));
1278 * Broadcast profile updates to OMB and other remote subscribers.
1280 * Since this may be slow with a lot of subscribers or bad remote sites,
1281 * this is run through the background queues if possible.
1283 function common_broadcast_profile(Profile $profile)
1285 $qm = QueueManager::get();
1286 $qm->enqueue($profile, "profile");
1290 function common_profile_url($nickname)
1292 return common_local_url('showstream', array('nickname' => $nickname),
1296 // Should make up a reasonable root URL
1298 function common_root_url($ssl=false)
1300 $url = common_path('', $ssl, false);
1301 $i = strpos($url, '?');
1303 $url = substr($url, 0, $i);
1308 // returns $bytes bytes of random data as a hexadecimal string
1309 // "good" here is a goal and not a guarantee
1311 function common_good_rand($bytes)
1313 // XXX: use random.org...?
1314 if (@file_exists('/dev/urandom')) {
1315 return common_urandom($bytes);
1316 } else { // FIXME: this is probably not good enough
1317 return common_mtrand($bytes);
1321 function common_urandom($bytes)
1323 $h = fopen('/dev/urandom', 'rb');
1325 $src = fread($h, $bytes);
1328 for ($i = 0; $i < $bytes; $i++) {
1329 $enc .= sprintf("%02x", (ord($src[$i])));
1334 function common_mtrand($bytes)
1337 for ($i = 0; $i < $bytes; $i++) {
1338 $enc .= sprintf("%02x", mt_rand(0, 255));
1344 * Record the given URL as the return destination for a future
1345 * form submission, to be read by common_get_returnto().
1347 * @param string $url
1349 * @fixme as a session-global setting, this can allow multiple forms
1350 * to conflict and overwrite each others' returnto destinations if
1351 * the user has multiple tabs or windows open.
1353 * Should refactor to index with a token or otherwise only pass the
1354 * data along its intended path.
1356 function common_set_returnto($url)
1358 common_ensure_session();
1359 $_SESSION['returnto'] = $url;
1363 * Fetch a return-destination URL previously recorded by
1364 * common_set_returnto().
1366 * @return mixed URL string or null
1368 * @fixme as a session-global setting, this can allow multiple forms
1369 * to conflict and overwrite each others' returnto destinations if
1370 * the user has multiple tabs or windows open.
1372 * Should refactor to index with a token or otherwise only pass the
1373 * data along its intended path.
1375 function common_get_returnto()
1377 common_ensure_session();
1378 return (array_key_exists('returnto', $_SESSION)) ? $_SESSION['returnto'] : null;
1381 function common_timestamp()
1383 return date('YmdHis');
1386 function common_ensure_syslog()
1388 static $initialized = false;
1389 if (!$initialized) {
1390 openlog(common_config('syslog', 'appname'), 0,
1391 common_config('syslog', 'facility'));
1392 $initialized = true;
1396 function common_log_line($priority, $msg)
1398 static $syslog_priorities = array('LOG_EMERG', 'LOG_ALERT', 'LOG_CRIT', 'LOG_ERR',
1399 'LOG_WARNING', 'LOG_NOTICE', 'LOG_INFO', 'LOG_DEBUG');
1400 return date('Y-m-d H:i:s') . ' ' . $syslog_priorities[$priority] . ': ' . $msg . PHP_EOL;
1403 function common_request_id()
1406 $server = common_config('site', 'server');
1407 if (php_sapi_name() == 'cli') {
1408 $script = basename($_SERVER['PHP_SELF']);
1409 return "$server:$script:$pid";
1411 static $req_id = null;
1412 if (!isset($req_id)) {
1413 $req_id = substr(md5(mt_rand()), 0, 8);
1415 if (isset($_SERVER['REQUEST_URI'])) {
1416 $url = $_SERVER['REQUEST_URI'];
1418 $method = $_SERVER['REQUEST_METHOD'];
1419 return "$server:$pid.$req_id $method $url";
1423 function common_log($priority, $msg, $filename=null)
1425 if(Event::handle('StartLog', array(&$priority, &$msg, &$filename))){
1426 $msg = '[' . common_request_id() . '] ' . $msg;
1427 $logfile = common_config('site', 'logfile');
1429 $log = fopen($logfile, "a");
1431 $output = common_log_line($priority, $msg);
1432 fwrite($log, $output);
1436 common_ensure_syslog();
1437 syslog($priority, $msg);
1439 Event::handle('EndLog', array($priority, $msg, $filename));
1443 function common_debug($msg, $filename=null)
1446 common_log(LOG_DEBUG, basename($filename).' - '.$msg);
1448 common_log(LOG_DEBUG, $msg);
1452 function common_log_db_error(&$object, $verb, $filename=null)
1454 $objstr = common_log_objstring($object);
1455 $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
1456 common_log(LOG_ERR, $last_error->message . '(' . $verb . ' on ' . $objstr . ')', $filename);
1459 function common_log_objstring(&$object)
1461 if (is_null($object)) {
1464 if (!($object instanceof DB_DataObject)) {
1467 $arr = $object->toArray();
1469 foreach ($arr as $k => $v) {
1470 if (is_object($v)) {
1471 $fields[] = "$k='".get_class($v)."'";
1473 $fields[] = "$k='$v'";
1476 $objstring = $object->tableName() . '[' . implode(',', $fields) . ']';
1480 function common_valid_http_url($url)
1482 return Validate::uri($url, array('allowed_schemes' => array('http', 'https')));
1485 function common_valid_tag($tag)
1487 if (preg_match('/^tag:(.*?),(\d{4}(-\d{2}(-\d{2})?)?):(.*)$/', $tag, $matches)) {
1488 return (Validate::email($matches[1]) ||
1489 preg_match('/^([\w-\.]+)$/', $matches[1]));
1495 * Determine if given domain or address literal is valid
1496 * eg for use in JIDs and URLs. Does not check if the domain
1499 * @param string $domain
1500 * @return boolean valid or not
1502 function common_valid_domain($domain)
1504 $octet = "(?:25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]|[0-9])";
1505 $ipv4 = "(?:$octet(?:\.$octet){3})";
1506 if (preg_match("/^$ipv4$/u", $domain)) return true;
1508 $group = "(?:[0-9a-f]{1,4})";
1509 $ipv6 = "(?:\[($group(?::$group){0,7})?(::)?($group(?::$group){0,7})?\])"; // http://tools.ietf.org/html/rfc3513#section-2.2
1511 if (preg_match("/^$ipv6$/ui", $domain, $matches)) {
1512 $before = explode(":", $matches[1]);
1513 $zeroes = $matches[2];
1514 $after = explode(":", $matches[3]);
1522 $explicit = count($before) + count($after);
1523 if ($explicit < $min || $explicit > $max) {
1530 require_once "Net/IDNA.php";
1531 $idn = Net_IDNA::getInstance();
1532 $domain = $idn->encode($domain);
1533 } catch (Exception $e) {
1537 $subdomain = "(?:[a-z0-9][a-z0-9-]*)"; // @fixme
1538 $fqdn = "(?:$subdomain(?:\.$subdomain)*\.?)";
1540 return preg_match("/^$fqdn$/ui", $domain);
1543 /* Following functions are copied from MediaWiki GlobalFunctions.php
1544 * and written by Evan Prodromou. */
1546 function common_accept_to_prefs($accept, $def = '*/*')
1548 // No arg means accept anything (per HTTP spec)
1550 return array($def => 1);
1555 $parts = explode(',', $accept);
1557 foreach($parts as $part) {
1558 // FIXME: doesn't deal with params like 'text/html; level=1'
1559 @list($value, $qpart) = explode(';', trim($part));
1561 if(!isset($qpart)) {
1563 } elseif(preg_match('/q\s*=\s*(\d*\.\d+)/', $qpart, $match)) {
1564 $prefs[$value] = $match[1];
1571 function common_mime_type_match($type, $avail)
1573 if(array_key_exists($type, $avail)) {
1576 $parts = explode('/', $type);
1577 if(array_key_exists($parts[0] . '/*', $avail)) {
1578 return $parts[0] . '/*';
1579 } elseif(array_key_exists('*/*', $avail)) {
1587 function common_negotiate_type($cprefs, $sprefs)
1591 foreach(array_keys($sprefs) as $type) {
1592 $parts = explode('/', $type);
1593 if($parts[1] != '*') {
1594 $ckey = common_mime_type_match($type, $cprefs);
1596 $combine[$type] = $sprefs[$type] * $cprefs[$ckey];
1601 foreach(array_keys($cprefs) as $type) {
1602 $parts = explode('/', $type);
1603 if($parts[1] != '*' && !array_key_exists($type, $sprefs)) {
1604 $skey = common_mime_type_match($type, $sprefs);
1606 $combine[$type] = $sprefs[$skey] * $cprefs[$type];
1612 $besttype = 'text/html';
1614 foreach(array_keys($combine) as $type) {
1615 if($combine[$type] > $bestq) {
1617 $bestq = $combine[$type];
1621 if ('text/html' === $besttype) {
1622 return "text/html; charset=utf-8";
1627 function common_config($main, $sub)
1630 return (array_key_exists($main, $config) &&
1631 array_key_exists($sub, $config[$main])) ? $config[$main][$sub] : false;
1634 function common_copy_args($from)
1637 $strip = get_magic_quotes_gpc();
1638 foreach ($from as $k => $v) {
1641 $to[$k] = common_copy_args($v);
1643 $to[$k] = stripslashes($v);
1653 * Neutralise the evil effects of magic_quotes_gpc in the current request.
1654 * This is used before handing a request off to OAuthRequest::from_request.
1655 * @fixme Doesn't consider vars other than _POST and _GET?
1656 * @fixme Can't be undone and could corrupt data if run twice.
1658 function common_remove_magic_from_request()
1660 if(get_magic_quotes_gpc()) {
1661 $_POST=array_map('stripslashes',$_POST);
1662 $_GET=array_map('stripslashes',$_GET);
1666 function common_user_uri(&$user)
1668 return common_local_url('userbyid', array('id' => $user->id),
1672 function common_notice_uri(&$notice)
1674 return common_local_url('shownotice',
1675 array('notice' => $notice->id),
1679 // 36 alphanums - lookalikes (0, O, 1, I) = 32 chars = 5 bits
1681 function common_confirmation_code($bits)
1683 // 36 alphanums - lookalikes (0, O, 1, I) = 32 chars = 5 bits
1684 static $codechars = '23456789ABCDEFGHJKLMNPQRSTUVWXYZ';
1685 $chars = ceil($bits/5);
1687 for ($i = 0; $i < $chars; $i++) {
1688 // XXX: convert to string and back
1689 $num = hexdec(common_good_rand(1));
1690 // XXX: randomness is too precious to throw away almost
1691 // 40% of the bits we get!
1692 $code .= $codechars[$num%32];
1697 // convert markup to HTML
1699 function common_markup_to_html($c)
1701 $c = preg_replace('/%%action.(\w+)%%/e', "common_local_url('\\1')", $c);
1702 $c = preg_replace('/%%doc.(\w+)%%/e', "common_local_url('doc', array('title'=>'\\1'))", $c);
1703 $c = preg_replace('/%%(\w+).(\w+)%%/e', 'common_config(\'\\1\', \'\\2\')', $c);
1704 return Markdown($c);
1707 function common_profile_uri($profile)
1712 $user = User::staticGet($profile->id);
1717 $remote = Remote_profile::staticGet($profile->id);
1719 return $remote->uri;
1721 // XXX: this is a very bad profile!
1725 function common_canonical_sms($sms)
1728 preg_replace('/\D/', '', $sms);
1732 function common_error_handler($errno, $errstr, $errfile, $errline, $errcontext)
1737 case E_COMPILE_ERROR:
1741 case E_RECOVERABLE_ERROR:
1742 common_log(LOG_ERR, "[$errno] $errstr ($errfile:$errline) [ABORT]");
1747 case E_COMPILE_WARNING:
1748 case E_CORE_WARNING:
1749 case E_USER_WARNING:
1750 common_log(LOG_WARNING, "[$errno] $errstr ($errfile:$errline)");
1755 common_log(LOG_NOTICE, "[$errno] $errstr ($errfile:$errline)");
1760 case E_USER_DEPRECATED:
1761 // XXX: config variable to log this stuff, too
1765 common_log(LOG_ERR, "[$errno] $errstr ($errfile:$errline) [UNKNOWN LEVEL, die()'ing]");
1770 // FIXME: show error page if we're on the Web
1771 /* Don't execute PHP internal error handler */
1775 function common_session_token()
1777 common_ensure_session();
1778 if (!array_key_exists('token', $_SESSION)) {
1779 $_SESSION['token'] = common_good_rand(64);
1781 return $_SESSION['token'];
1784 function common_cache_key($extra)
1786 return Cache::key($extra);
1789 function common_keyize($str)
1791 return Cache::keyize($str);
1794 function common_memcache()
1796 return Cache::instance();
1799 function common_license_terms($uri)
1801 if(preg_match('/creativecommons.org\/licenses\/([^\/]+)/', $uri, $matches)) {
1802 return explode('-',$matches[1]);
1807 function common_compatible_license($from, $to)
1809 $from_terms = common_license_terms($from);
1810 // public domain and cc-by are compatible with everything
1811 if(count($from_terms) == 1 && ($from_terms[0] == 'publicdomain' || $from_terms[0] == 'by')) {
1814 $to_terms = common_license_terms($to);
1815 // sa is compatible across versions. IANAL
1816 if(in_array('sa',$from_terms) || in_array('sa',$to_terms)) {
1817 return count(array_diff($from_terms, $to_terms)) == 0;
1819 // XXX: better compatibility check needed here!
1820 // Should at least normalise URIs
1821 return ($from == $to);
1825 * returns a quoted table name, if required according to config
1827 function common_database_tablename($tablename)
1830 if(common_config('db','quote_identifiers')) {
1831 $tablename = '"'. $tablename .'"';
1833 //table prefixes could be added here later
1838 * Shorten a URL with the current user's configured shortening service,
1839 * or ur1.ca if configured, or not at all if no shortening is set up.
1841 * @param string $long_url original URL
1842 * @param boolean $force Force shortening (used when notice is too long)
1844 * @return string may return the original URL if shortening failed
1846 * @fixme provide a way to specify a particular shortener
1847 * @fixme provide a way to specify to use a given user's shortening preferences
1850 function common_shorten_url($long_url, $force = false)
1852 common_debug("Shortening URL '$long_url' (force = $force)");
1854 $long_url = trim($long_url);
1856 $user = common_current_user();
1858 $maxUrlLength = User_urlshortener_prefs::maxUrlLength($user);
1859 common_debug("maxUrlLength = $maxUrlLength");
1861 // $force forces shortening even if it's not strictly needed
1863 if (mb_strlen($long_url) < $maxUrlLength && !$force) {
1864 common_debug("Skipped shortening URL.");
1868 $shortenerName = User_urlshortener_prefs::urlShorteningService($user);
1870 common_debug("Shortener name = '$shortenerName'");
1872 if (Event::handle('StartShortenUrl', array($long_url, $shortenerName, &$shortenedUrl))) {
1873 //URL wasn't shortened, so return the long url
1876 //URL was shortened, so return the result
1877 return trim($shortenedUrl);
1882 * @return mixed array($proxy, $ip) for web requests; proxy may be null
1883 * null if not a web request
1885 * @fixme X-Forwarded-For can be chained by multiple proxies;
1886 we should parse the list and provide a cleaner array
1887 * @fixme X-Forwarded-For can be forged by clients; only use them if trusted
1888 * @fixme X_Forwarded_For headers will override X-Forwarded-For read through $_SERVER;
1889 * use function to get exact request headers from Apache if possible.
1891 function common_client_ip()
1893 if (!isset($_SERVER) || !array_key_exists('REQUEST_METHOD', $_SERVER)) {
1897 if (array_key_exists('HTTP_X_FORWARDED_FOR', $_SERVER)) {
1898 if (array_key_exists('HTTP_CLIENT_IP', $_SERVER)) {
1899 $proxy = $_SERVER['HTTP_CLIENT_IP'];
1901 $proxy = $_SERVER['REMOTE_ADDR'];
1903 $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
1906 if (array_key_exists('HTTP_CLIENT_IP', $_SERVER)) {
1907 $ip = $_SERVER['HTTP_CLIENT_IP'];
1909 $ip = $_SERVER['REMOTE_ADDR'];
1913 return array($proxy, $ip);
1916 function common_url_to_nickname($url)
1918 static $bad = array('query', 'user', 'password', 'port', 'fragment');
1920 $parts = parse_url($url);
1922 # If any of these parts exist, this won't work
1924 foreach ($bad as $badpart) {
1925 if (array_key_exists($badpart, $parts)) {
1930 # We just have host and/or path
1932 # If it's just a host...
1933 if (array_key_exists('host', $parts) &&
1934 (!array_key_exists('path', $parts) || strcmp($parts['path'], '/') == 0))
1936 $hostparts = explode('.', $parts['host']);
1938 # Try to catch common idiom of nickname.service.tld
1940 if ((count($hostparts) > 2) &&
1941 (strlen($hostparts[count($hostparts) - 2]) > 3) && # try to skip .co.uk, .com.au
1942 (strcmp($hostparts[0], 'www') != 0))
1944 return common_nicknamize($hostparts[0]);
1946 # Do the whole hostname
1947 return common_nicknamize($parts['host']);
1950 if (array_key_exists('path', $parts)) {
1951 # Strip starting, ending slashes
1952 $path = preg_replace('@/$@', '', $parts['path']);
1953 $path = preg_replace('@^/@', '', $path);
1954 $path = basename($path);
1956 return common_nicknamize($path);
1964 function common_nicknamize($str)
1966 $str = preg_replace('/\W/', '', $str);
1967 return strtolower($str);