3 * StatusNet - the distributed open-source microblogging tool
4 * Copyright (C) 2008-2011, 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) */
23 * Show a server error.
25 function common_server_error($msg, $code=500)
27 $err = new ServerErrorAction($msg, $code);
34 function common_user_error($msg, $code=400)
36 $err = new ClientErrorAction($msg, $code);
41 * This should only be used at setup; processes switching languages
42 * to send text to other users should use common_switch_locale().
44 * @param string $language Locale language code (optional; empty uses
45 * current user's preference or site default)
46 * @return mixed success
48 function common_init_locale($language=null)
51 $language = common_language();
53 putenv('LANGUAGE='.$language);
54 putenv('LANG='.$language);
55 $ok = setlocale(LC_ALL, $language . ".utf8",
65 * Initialize locale and charset settings and gettext with our message catalog,
66 * using the current user's language preference or the site default.
68 * This should generally only be run at framework initialization; code switching
69 * languages at runtime should call common_switch_language().
73 function common_init_language()
75 mb_internal_encoding('UTF-8');
77 // Note that this setlocale() call may "fail" but this is harmless;
78 // gettext will still select the right language.
79 $language = common_language();
80 $locale_set = common_init_locale($language);
83 // The requested locale doesn't exist on the system.
85 // gettext seems very picky... We first need to setlocale()
86 // to a locale which _does_ exist on the system, and _then_
87 // we can set in another locale that may not be set up
88 // (say, ga_ES for Galego/Galician) it seems to take it.
90 // For some reason C and POSIX which are guaranteed to work
91 // don't do the job. en_US.UTF-8 should be there most of the
92 // time, but not guaranteed.
93 $ok = common_init_locale("en_US");
94 if (!$ok && strtolower(substr(PHP_OS, 0, 3)) != 'win') {
95 // Try to find a complete, working locale on Unix/Linux...
96 // @fixme shelling out feels awfully inefficient
97 // but I don't think there's a more standard way.
99 foreach (explode("\n", $all) as $locale) {
100 if (preg_match('/\.utf[-_]?8$/i', $locale)) {
101 $ok = setlocale(LC_ALL, $locale);
109 common_log(LOG_ERR, "Unable to find a UTF-8 locale on this system; UI translations may not work.");
111 $locale_set = common_init_locale($language);
114 common_init_gettext();
120 function common_init_gettext()
122 setlocale(LC_CTYPE, 'C');
123 // So we do not have to make people install the gettext locales
124 $path = common_config('site','locale_path');
125 bindtextdomain("statusnet", $path);
126 bind_textdomain_codeset("statusnet", "UTF-8");
127 textdomain("statusnet");
131 * Switch locale during runtime, and poke gettext until it cries uncle.
132 * Otherwise, sometimes it doesn't actually switch away from the old language.
134 * @param string $language code for locale ('en', 'fr', 'pt_BR' etc)
136 function common_switch_locale($language=null)
138 common_init_locale($language);
140 setlocale(LC_CTYPE, 'C');
141 // So we do not have to make people install the gettext locales
142 $path = common_config('site','locale_path');
143 bindtextdomain("statusnet", $path);
144 bind_textdomain_codeset("statusnet", "UTF-8");
145 textdomain("statusnet");
148 function common_timezone()
150 if (common_logged_in()) {
151 $user = common_current_user();
152 if ($user->timezone) {
153 return $user->timezone;
157 return common_config('site', 'timezone');
160 function common_valid_language($lang)
163 // Validate -- we don't want to end up with a bogus code
164 // left over from some old junk.
165 foreach (common_config('site', 'languages') as $code => $info) {
166 if ($info['lang'] == $lang) {
174 function common_language()
176 // Allow ?uselang=xx override, very useful for debugging
177 // and helping translators check usage and context.
178 if (isset($_GET['uselang'])) {
179 $uselang = strval($_GET['uselang']);
180 if (common_valid_language($uselang)) {
185 // If there is a user logged in and they've set a language preference
186 // then return that one...
187 if (_have_config() && common_logged_in()) {
188 $user = common_current_user();
190 if (common_valid_language($user->language)) {
191 return $user->language;
195 // Otherwise, find the best match for the languages requested by the
197 if (common_config('site', 'langdetect')) {
198 $httplang = isset($_SERVER['HTTP_ACCEPT_LANGUAGE']) ? $_SERVER['HTTP_ACCEPT_LANGUAGE'] : null;
199 if (!empty($httplang)) {
200 $language = client_prefered_language($httplang);
206 // Finally, if none of the above worked, use the site's default...
207 return common_config('site', 'language');
211 * Salted, hashed passwords are stored in the DB.
213 function common_munge_password($password, $id, Profile $profile=null)
217 if (Event::handle('StartHashPassword', array(&$hashed, $password, $profile))) {
218 Event::handle('EndHashPassword', array(&$hashed, $password, $profile));
220 if (empty($hashed)) {
221 throw new PasswordHashException();
228 * Check if a username exists and has matching password.
230 function common_check_user($nickname, $password)
232 // empty nickname always unacceptable
233 if (empty($nickname)) {
237 $authenticatedUser = false;
239 if (Event::handle('StartCheckPassword', array($nickname, $password, &$authenticatedUser))) {
241 if (common_is_email($nickname)) {
242 $user = User::getKV('email', common_canonical_email($nickname));
244 $user = User::getKV('nickname', Nickname::normalize($nickname));
247 if ($user instanceof User && !empty($password)) {
248 if (0 == strcmp(common_munge_password($password, $user->id),
250 //internal checking passed
251 $authenticatedUser = $user;
254 Event::handle('EndCheckPassword', array($nickname, $password, $authenticatedUser));
257 return $authenticatedUser;
261 * Is the current user logged in?
263 function common_logged_in()
265 return (!is_null(common_current_user()));
268 function common_have_session()
270 return (0 != strcmp(session_id(), ''));
273 function common_ensure_session()
276 if (array_key_exists(session_name(), $_COOKIE)) {
277 $c = $_COOKIE[session_name()];
279 if (!common_have_session()) {
280 if (common_config('sessions', 'handle')) {
281 Session::setSaveHandler();
283 if (array_key_exists(session_name(), $_GET)) {
284 $id = $_GET[session_name()];
285 } else if (array_key_exists(session_name(), $_COOKIE)) {
286 $id = $_COOKIE[session_name()];
292 if (!isset($_SESSION['started'])) {
293 $_SESSION['started'] = time();
295 common_log(LOG_WARNING, 'Session cookie "' . $_COOKIE[session_name()] . '" ' .
296 ' is set but started value is null');
302 // Three kinds of arguments:
307 // Initialize to false; set to null if none found
310 function common_set_user($user)
314 if (is_null($user) && common_have_session()) {
316 unset($_SESSION['userid']);
318 } else if (is_string($user)) {
320 $user = User::getKV('nickname', $nickname);
321 } else if (!$user instanceof User) {
325 if ($user instanceof User) {
326 if (Event::handle('StartSetUser', array(&$user))) {
328 if (!$user->hasRight(Right::WEBLOGIN)) {
329 // TRANS: Authorisation exception thrown when a user a not allowed to login.
330 throw new AuthorizationException(_('Not allowed to log in.'));
332 common_ensure_session();
333 $_SESSION['userid'] = $user->id;
335 Event::handle('EndSetUser', array($user));
343 function common_set_cookie($key, $value, $expiration=0)
345 $path = common_config('site', 'path');
346 $server = common_config('site', 'server');
348 if ($path && ($path != '/')) {
349 $cookiepath = '/' . $path . '/';
353 return setcookie($key,
358 common_config('site', 'ssl')=='always');
361 define('REMEMBERME', 'rememberme');
362 define('REMEMBERME_EXPIRY', 30 * 24 * 60 * 60); // 30 days
364 function common_rememberme($user=null)
367 $user = common_current_user();
373 $rm = new Remember_me();
375 $rm->code = common_random_hexstr(16);
376 $rm->user_id = $user->id;
378 // Wrap the insert in some good ol' fashioned transaction code
382 $result = $rm->insert();
385 common_log_db_error($rm, 'INSERT', __FILE__);
389 $rm->query('COMMIT');
391 $cookieval = $rm->user_id . ':' . $rm->code;
393 common_log(LOG_INFO, 'adding rememberme cookie "' . $cookieval . '" for ' . $user->nickname);
395 common_set_cookie(REMEMBERME, $cookieval, time() + REMEMBERME_EXPIRY);
400 function common_remembered_user()
404 $packed = isset($_COOKIE[REMEMBERME]) ? $_COOKIE[REMEMBERME] : null;
410 list($id, $code) = explode(':', $packed);
412 if (!$id || !$code) {
413 common_log(LOG_WARNING, 'Malformed rememberme cookie: ' . $packed);
418 $rm = Remember_me::getKV('code', $code);
421 common_log(LOG_WARNING, 'No such remember code: ' . $code);
426 if ($rm->user_id != $id) {
427 common_log(LOG_WARNING, 'Rememberme code for wrong user: ' . $rm->user_id . ' != ' . $id);
432 $user = User::getKV('id', $rm->user_id);
434 if (!$user instanceof User) {
435 common_log(LOG_WARNING, 'No such user for rememberme: ' . $rm->user_id);
441 $result = $rm->delete();
444 common_log_db_error($rm, 'DELETE', __FILE__);
445 common_log(LOG_WARNING, 'Could not delete rememberme: ' . $code);
450 common_log(LOG_INFO, 'logging in ' . $user->nickname . ' using rememberme code ' . $rm->code);
452 common_set_user($user);
453 common_real_login(false);
455 // We issue a new cookie, so they can log in
456 // automatically again after this session
458 common_rememberme($user);
464 * must be called with a valid user!
466 function common_forgetme()
468 common_set_cookie(REMEMBERME, '', 0);
472 * Who is the current user?
474 function common_current_user()
478 if (!_have_config()) {
482 if ($_cur === false) {
484 if (isset($_COOKIE[session_name()]) || isset($_GET[session_name()])
485 || (isset($_SESSION['userid']) && $_SESSION['userid'])) {
486 common_ensure_session();
487 $id = isset($_SESSION['userid']) ? $_SESSION['userid'] : false;
489 $user = User::getKV('id', $id);
490 if ($user instanceof User) {
497 // that didn't work; try to remember; will init $_cur to null on failure
498 $_cur = common_remembered_user();
501 // XXX: Is this necessary?
502 $_SESSION['userid'] = $_cur->id;
510 * Logins that are 'remembered' aren't 'real' -- they're subject to
511 * cookie-stealing. So, we don't let them do certain things. New reg,
512 * OpenID, and password logins _are_ real.
514 function common_real_login($real=true)
516 common_ensure_session();
517 $_SESSION['real_login'] = $real;
520 function common_is_real_login()
522 return common_logged_in() && $_SESSION['real_login'];
526 * Get a hash portion for HTTP caching Etags and such including
527 * info on the current user's session. If login/logout state changes,
528 * or we've changed accounts, or we've renamed the current user,
529 * we'll get a new hash value.
531 * This should not be considered secure information.
533 * @param User $user (optional; uses common_current_user() if left out)
536 function common_user_cache_hash($user=false)
538 if ($user === false) {
539 $user = common_current_user();
541 if ($user instanceof User) {
542 return crc32($user->id . ':' . $user->nickname);
549 * get canonical version of nickname for comparison
551 * @param string $nickname
554 * @throws NicknameException on invalid input
555 * @deprecated call Nickname::normalize() directly.
557 function common_canonical_nickname($nickname)
559 return Nickname::normalize($nickname);
563 * get canonical version of email for comparison
565 * @fixme actually normalize
566 * @fixme reject invalid input
568 * @param string $email
571 function common_canonical_email($email)
573 // XXX: canonicalize UTF-8
574 // XXX: lcase the domain part
579 * Partial notice markup rendering step: build links to !group references.
581 * @param string $text partially rendered HTML
582 * @param Notice $notice in whose context we're working
583 * @return string partially rendered HTML
585 function common_render_content($text, Notice $notice)
587 $r = common_render_text($text);
588 $r = common_linkify_mentions($r, $notice);
593 * Finds @-mentions within the partially-rendered text section and
594 * turns them into live links.
596 * Should generally not be called except from common_render_content().
598 * @param string $text partially-rendered HTML
599 * @param Notice $notice in-progress or complete Notice object for context
600 * @return string partially-rendered HTML
602 function common_linkify_mentions($text, $notice)
604 $mentions = common_find_mentions($text, $notice);
606 // We need to go through in reverse order by position,
607 // so our positions stay valid despite our fudging with the
612 foreach ($mentions as $mention)
614 $points[$mention['position']] = $mention;
619 foreach ($points as $position => $mention) {
621 $linkText = common_linkify_mention($mention);
623 $text = substr_replace($text, $linkText, $position, mb_strlen($mention['text']));
629 function common_linkify_mention($mention)
633 if (Event::handle('StartLinkifyMention', array($mention, &$output))) {
635 $xs = new XMLStringer(false);
637 $attrs = array('href' => $mention['url'],
638 'class' => 'h-card '.$mention['type']);
640 if (!empty($mention['title'])) {
641 $attrs['title'] = $mention['title'];
644 $xs->element('a', $attrs, $mention['text']);
646 $output = $xs->getString();
648 Event::handle('EndLinkifyMention', array($mention, &$output));
655 * Find @-mentions in the given text, using the given notice object as context.
656 * References will be resolved with common_relative_profile() against the user
657 * who posted the notice.
659 * Note the return data format is internal, to be used for building links and
660 * such. Should not be used directly; rather, call common_linkify_mentions().
662 * @param string $text
663 * @param Notice $notice notice in whose context we're building links
669 function common_find_mentions($text, $notice)
672 $sender = Profile::getKV('id', $notice->profile_id);
673 } catch (NoProfileException $e) {
679 if (Event::handle('StartFindMentions', array($sender, $text, &$mentions))) {
680 // Get the context of the original notice, if any
683 $origMentions = array();
687 if ($notice instanceof Notice) {
689 $origNotice = $notice->getParent();
690 $origAuthor = $origNotice->getProfile();
692 $ids = $origNotice->getReplies();
694 foreach ($ids as $id) {
695 $repliedTo = Profile::getKV('id', $id);
696 if ($repliedTo instanceof Profile) {
697 $origMentions[$repliedTo->nickname] = $repliedTo;
700 } catch (NoProfileException $e) {
701 common_log(LOG_WARNING, sprintf('Notice %d author profile id %d does not exist', $origNotice->id, $origNotice->profile_id));
702 } catch (ServerException $e) {
703 // Probably just no parent. Should get a specific NoParentException
704 } catch (Exception $e) {
705 common_log(LOG_WARNING, __METHOD__ . ' got exception ' . get_class($e) . ' : ' . $e->getMessage());
709 $matches = common_find_mentions_raw($text);
711 foreach ($matches as $match) {
713 $nickname = Nickname::normalize($match[0]);
714 } catch (NicknameException $e) {
715 // Bogus match? Drop it.
719 // Try to get a profile for this nickname.
720 // Start with conversation context, then go to
723 if ($origAuthor instanceof Profile && $origAuthor->nickname == $nickname) {
724 $mentioned = $origAuthor;
725 } else if (!empty($origMentions) &&
726 array_key_exists($nickname, $origMentions)) {
727 $mentioned = $origMentions[$nickname];
729 $mentioned = common_relative_profile($sender, $nickname);
732 if ($mentioned instanceof Profile) {
733 $user = User::getKV('id', $mentioned->id);
735 if ($user instanceof User) {
736 $url = common_local_url('userbyid', array('id' => $user->id));
738 $url = $mentioned->profileurl;
741 $mention = array('mentioned' => array($mentioned),
744 'position' => $match[1],
747 if (!empty($mentioned->fullname)) {
748 $mention['title'] = $mentioned->fullname;
751 $mentions[] = $mention;
755 // @#tag => mention of all subscriptions tagged 'tag'
757 preg_match_all('/(?:^|[\s\.\,\:\;]+)@#([\pL\pN_\-\.]{1,64})/',
758 $text, $hmatches, PREG_OFFSET_CAPTURE);
759 foreach ($hmatches[1] as $hmatch) {
760 $tag = common_canonical_tag($hmatch[0]);
761 $plist = Profile_list::getByTaggerAndTag($sender->id, $tag);
762 if (!$plist instanceof Profile_list || $plist->private) {
765 $tagged = $sender->getTaggedSubscribers($tag);
767 $url = common_local_url('showprofiletag',
768 array('tagger' => $sender->nickname,
771 $mentions[] = array('mentioned' => $tagged,
773 'text' => $hmatch[0],
774 'position' => $hmatch[1],
778 preg_match_all('/(?:^|[\s\.\,\:\;]+)!(' . Nickname::DISPLAY_FMT . ')/',
779 $text, $hmatches, PREG_OFFSET_CAPTURE);
780 foreach ($hmatches[1] as $hmatch) {
781 $nickname = Nickname::normalize($hmatch[0]);
782 $group = User_group::getForNickname($nickname, $sender);
784 if (!$group instanceof User_group || !$sender->isMember($group)) {
788 $profile = $group->getProfile();
790 $mentions[] = array('mentioned' => array($profile),
792 'text' => $hmatch[0],
793 'position' => $hmatch[1],
794 'url' => $group->permalink(),
795 'title' => $group->getFancyName());
798 Event::handle('EndFindMentions', array($sender, $text, &$mentions));
805 * Does the actual regex pulls to find @-mentions in text.
806 * Should generally not be called directly; for use in common_find_mentions.
808 * @param string $text
809 * @return array of PCRE match arrays
811 function common_find_mentions_raw($text)
814 preg_match_all('/^T (' . Nickname::DISPLAY_FMT . ') /',
817 PREG_OFFSET_CAPTURE);
819 $atmatches = array();
820 preg_match_all('/(?:^|\s+)@(' . Nickname::DISPLAY_FMT . ')\b/',
823 PREG_OFFSET_CAPTURE);
825 $matches = array_merge($tmatches[1], $atmatches[1]);
829 function common_render_text($text)
831 $r = nl2br(htmlspecialchars($text));
833 $r = preg_replace('/[\x{0}-\x{8}\x{b}-\x{c}\x{e}-\x{19}]/', '', $r);
834 $r = common_replace_urls_callback($r, 'common_linkify');
835 $r = preg_replace_callback('/(^|\"\;|\'|\(|\[|\{|\s+)#([\pL\pN_\-\.]{1,64})/u',
836 function ($m) { return "{$m[1]}#".common_tag_link($m[2]); }, $r);
842 * Find links in the given text and pass them to the given callback function.
844 * @param string $text
845 * @param function($text, $arg) $callback: return replacement text
846 * @param mixed $arg: optional argument will be passed on to the callback
848 function common_replace_urls_callback($text, $callback, $arg = null) {
849 // Start off with a regex
851 '(?:^|[\s\<\>\(\)\[\]\{\}\\\'\\\";]+)(?![\@\!\#])'.
854 '(?:'. //Known protocols
856 '(?:(?:https?|ftps?|mms|rtsp|gopher|news|nntp|telnet|wais|file|prospero|webcal|irc)://)'.
858 '(?:(?:mailto|aim|tel|xmpp):)'.
860 '(?:[\pN\pL\-\_\+\%\~]+(?::[\pN\pL\-\_\+\%\~]+)?\@)?'. //user:pass@
863 '\[[\pN\pL\-\_\:\.]+(?<![\.\:])\]'. //[dns]
865 '[\pN\pL\-\_\:\.]+(?<![\.\:])'. //dns
869 '|(?:(?: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
871 '\[?(?:(?:(?:[0-9A-Fa-f]{1,4}:){7}(?:(?:[0-9A-Fa-f]{1,4})|:))|(?:(?:[0-9A-Fa-f]{1,4}:){6}(?::|(?:(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})(?:\.(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})|(?::[0-9A-Fa-f]{1,4})))|(?:(?:[0-9A-Fa-f]{1,4}:){5}(?:(?::(?:(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})(?:\.(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})?)|(?:(?::[0-9A-Fa-f]{1,4}){1,2})))|(?:(?:[0-9A-Fa-f]{1,4}:){4}(?::[0-9A-Fa-f]{1,4}){0,1}(?:(?::(?:(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})(?:\.(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})?)|(?:(?::[0-9A-Fa-f]{1,4}){1,2})))|(?:(?:[0-9A-Fa-f]{1,4}:){3}(?::[0-9A-Fa-f]{1,4}){0,2}(?:(?::(?:(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})(?:\.(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})?)|(?:(?::[0-9A-Fa-f]{1,4}){1,2})))|(?:(?:[0-9A-Fa-f]{1,4}:){2}(?::[0-9A-Fa-f]{1,4}){0,3}(?:(?::(?:(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})(?:\.(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})?)|(?:(?::[0-9A-Fa-f]{1,4}){1,2})))|(?:(?:[0-9A-Fa-f]{1,4}:)(?::[0-9A-Fa-f]{1,4}){0,4}(?:(?::(?:(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})(?:\.(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})?)|(?:(?::[0-9A-Fa-f]{1,4}){1,2})))|(?::(?::[0-9A-Fa-f]{1,4}){0,5}(?:(?::(?:(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})(?:\.(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})?)|(?:(?::[0-9A-Fa-f]{1,4}){1,2})))|(?:(?:(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})(?:\.(?:25[0-5]|2[0-4]\d|[01]?\d{1,2})){3})))\]?(?<!:)'.
873 '(?:[\pN\pL\-\_\+\%\~]+(?:\:[\pN\pL\-\_\+\%\~]+)?\@)?'. //user:pass@
874 '[\pN\pL\-\_]+(?:\.[\pN\pL\-\_]+)*\.'.
875 //tld list from http://data.iana.org/TLD/tlds-alpha-by-domain.txt, also added local, loc, and onion
876 '(?: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)'.
880 '(?:\:\d+)?'. //:port
881 '(?:/[\pN\pL$\,\!\(\)\.\:\-\_\+\/\=\&\;\%\~\*\$\+\'@]*)?'. // /path
882 '(?:\?[\pN\pL\$\,\!\(\)\.\:\-\_\+\/\=\&\;\%\~\*\$\+\'@\/]*)?'. // ?query string
883 '(?:\#[\pN\pL$\,\!\(\)\.\:\-\_\+\/\=\&\;\%\~\*\$\+\'\@/\?\#]*)?'. // #fragment
884 ')(?<![\?\.\,\#\,])'.
887 //preg_match_all($regex,$text,$matches);
889 return preg_replace_callback($regex, curry('callback_helper',$callback,$arg) ,$text);
893 * Intermediate callback for common_replace_links(), helps resolve some
894 * ambiguous link forms before passing on to the final callback.
896 * @param array $matches
897 * @param callable $callback
898 * @param mixed $arg optional argument to pass on as second param to callback
903 function callback_helper($matches, $callback, $arg=null) {
905 $left = strpos($matches[0],$url);
906 $right = $left+strlen($url);
908 $groupSymbolSets=array(
926 $cannotEndWith=array('.','?',',','#');
930 foreach($groupSymbolSets as $groupSymbolSet){
931 if(substr($url,-1)==$groupSymbolSet['right']){
932 $group_left_count = substr_count($url,$groupSymbolSet['left']);
933 $group_right_count = substr_count($url,$groupSymbolSet['right']);
934 if($group_left_count<$group_right_count){
936 $url=substr($url,0,-1);
940 if(in_array(substr($url,-1),$cannotEndWith)){
942 $url=substr($url,0,-1);
944 }while($original_url!=$url);
946 $result = call_user_func_array($callback, array($url, $arg));
947 return substr($matches[0],0,$left) . $result . substr($matches[0],$right);
950 require_once INSTALLDIR . "/lib/curry.php";
952 function common_linkify($url) {
953 // It comes in special'd, so we unspecial it before passing to the stringifying
955 $url = htmlspecialchars_decode($url);
957 if (strpos($url, '@') !== false && strpos($url, ':') === false && Validate::email($url)) {
958 //url is an email address without the mailto: protocol
959 $canon = "mailto:$url";
960 $longurl = "mailto:$url";
963 $canon = File_redirection::_canonUrl($url);
965 $longurl_data = File_redirection::where($canon, common_config('attachments', 'process_links'));
966 if (is_array($longurl_data)) {
967 $longurl = $longurl_data['url'];
968 } elseif (is_string($longurl_data)) {
969 $longurl = $longurl_data;
971 // Unable to reach the server to verify contents, etc
972 // Just pass the link on through for now.
973 common_log(LOG_ERR, "Can't linkify url '$url'");
978 $attrs = array('href' => $canon, 'title' => $longurl);
980 $is_attachment = false;
981 $attachment_id = null;
984 // Check to see whether this is a known "attachment" URL.
986 $f = File::getKV('url', $longurl);
988 if (!$f instanceof File) {
989 if (common_config('attachments', 'process_links')) {
990 // XXX: this writes to the database. :<
992 $f = File::processNew($longurl);
993 } catch (ServerException $e) {
999 if ($f instanceof File) {
1001 $enclosure = $f->getEnclosure();
1002 $is_attachment = true;
1003 $attachment_id = $f->id;
1005 $thumb = File_thumbnail::getKV('file_id', $f->id);
1006 $has_thumb = ($thumb instanceof File_thumbnail);
1007 } catch (ServerException $e) {
1008 // There was not enough metadata available
1013 if ($is_attachment) {
1014 $attrs['class'] = 'attachment';
1016 $attrs['class'] = 'attachment thumbnail';
1018 $attrs['id'] = "attachment-{$attachment_id}";
1021 // Whether to nofollow
1023 $nf = common_config('nofollow', 'external');
1025 if ($nf == 'never') {
1026 $attrs['rel'] = 'external';
1028 $attrs['rel'] = 'nofollow external';
1031 return XMLStringer::estring('a', $attrs, $url);
1035 * Find and shorten links in a given chunk of text if it's longer than the
1036 * configured notice content limit (or unconditionally).
1038 * Side effects: may save file and file_redirection records for referenced URLs.
1040 * Pass the $user option or call $user->shortenLinks($text) to ensure the proper
1041 * user's options are used; otherwise the current web session user's setitngs
1042 * will be used or ur1.ca if there is no active web login.
1044 * @param string $text
1045 * @param boolean $always (optional)
1046 * @param User $user (optional)
1050 function common_shorten_links($text, $always = false, User $user=null)
1052 if ($user === null) {
1053 $user = common_current_user();
1056 $maxLength = User_urlshortener_prefs::maxNoticeLength($user);
1058 if ($always || ($maxLength != -1 && mb_strlen($text) > $maxLength)) {
1059 return common_replace_urls_callback($text, array('File_redirection', 'forceShort'), $user);
1061 return common_replace_urls_callback($text, array('File_redirection', 'makeShort'), $user);
1066 * Very basic stripping of invalid UTF-8 input text.
1068 * @param string $str
1069 * @return mixed string or null if invalid input
1071 * @todo ideally we should drop bad chars, and maybe do some of the checks
1072 * from common_xml_safe_str. But we can't strip newlines, etc.
1073 * @todo Unicode normalization might also be useful, but not needed now.
1075 function common_validate_utf8($str)
1077 // preg_replace will return NULL on invalid UTF-8 input.
1079 // Note: empty regex //u also caused NULL return on some
1080 // production machines, but none of our test machines.
1082 // This should be replaced with a more reliable check.
1083 return preg_replace('/\x00/u', '', $str);
1087 * Make sure an arbitrary string is safe for output in XML as a single line.
1089 * @param string $str
1092 function common_xml_safe_str($str)
1094 // Replace common eol and extra whitespace input chars
1099 "\0", // null byte eos
1100 "\x0B" // vertical tab
1103 $replacement = array(
1104 ' ', // single space
1111 $str = str_replace($unWelcome, $replacement, $str);
1113 // Neutralize any additional control codes and UTF-16 surrogates
1114 // (Twitter uses '*')
1115 return preg_replace('/[\p{Cc}\p{Cs}]/u', '*', $str);
1118 function common_tag_link($tag)
1120 $canonical = common_canonical_tag($tag);
1121 if (common_config('singleuser', 'enabled')) {
1122 // regular TagAction isn't set up in 1user mode
1123 $nickname = User::singleUserNickname();
1124 $url = common_local_url('showstream',
1125 array('nickname' => $nickname,
1126 'tag' => $canonical));
1128 $url = common_local_url('tag', array('tag' => $canonical));
1130 $xs = new XMLStringer();
1131 $xs->elementStart('span', 'tag');
1132 $xs->element('a', array('href' => $url,
1135 $xs->elementEnd('span');
1136 return $xs->getString();
1139 function common_canonical_tag($tag)
1142 $tag = preg_replace('/[^\pL\pN]/u', '', $tag);
1143 $tag = mb_convert_case($tag, MB_CASE_LOWER, "UTF-8");
1144 $tag = substr($tag, 0, 64);
1148 function common_valid_profile_tag($str)
1150 return preg_match('/^[A-Za-z0-9_\-\.]{1,64}$/', $str);
1154 * Resolve an ambiguous profile nickname reference, checking in following order:
1155 * - profiles that $sender subscribes to
1156 * - profiles that subscribe to $sender
1157 * - local user profiles
1159 * WARNING: does not validate or normalize $nickname -- MUST BE PRE-VALIDATED
1160 * OR THERE MAY BE A RISK OF SQL INJECTION ATTACKS. THIS FUNCTION DOES NOT
1163 * @fixme validate input
1165 * @fixme fix or remove mystery third parameter
1166 * @fixme is $sender a User or Profile?
1168 * @param <type> $sender the user or profile in whose context we're looking
1169 * @param string $nickname validated nickname of
1170 * @param <type> $dt unused mystery parameter; in Notice reply-to handling a timestamp is passed.
1172 * @return Profile or null
1174 function common_relative_profile($sender, $nickname, $dt=null)
1176 // Will throw exception on invalid input.
1177 $nickname = Nickname::normalize($nickname);
1179 // Try to find profiles this profile is subscribed to that have this nickname
1180 $recipient = new Profile();
1181 // XXX: use a join instead of a subquery
1182 $recipient->whereAdd('EXISTS (SELECT subscribed from subscription where subscriber = '.intval($sender->id).' and subscribed = id)', 'AND');
1183 $recipient->whereAdd("nickname = '" . $recipient->escape($nickname) . "'", 'AND');
1184 if ($recipient->find(true)) {
1185 // XXX: should probably differentiate between profiles with
1186 // the same name by date of most recent update
1189 // Try to find profiles that listen to this profile and that have this nickname
1190 $recipient = new Profile();
1191 // XXX: use a join instead of a subquery
1192 $recipient->whereAdd('EXISTS (SELECT subscriber from subscription where subscribed = '.intval($sender->id).' and subscriber = id)', 'AND');
1193 $recipient->whereAdd("nickname = '" . $recipient->escape($nickname) . "'", 'AND');
1194 if ($recipient->find(true)) {
1195 // XXX: should probably differentiate between profiles with
1196 // the same name by date of most recent update
1199 // If this is a local user, try to find a local user with that nickname.
1200 $sender = User::getKV('id', $sender->id);
1201 if ($sender instanceof User) {
1202 $recipient_user = User::getKV('nickname', $nickname);
1203 if ($recipient_user instanceof User) {
1204 return $recipient_user->getProfile();
1207 // Otherwise, no links. @messages from local users to remote users,
1208 // or from remote users to other remote users, are just
1209 // outside our ability to make intelligent guesses about
1213 function common_local_url($action, $args=null, $params=null, $fragment=null, $addSession=true)
1215 if (Event::handle('StartLocalURL', array(&$action, &$params, &$fragment, &$addSession, &$url))) {
1217 $path = $r->build($action, $args, $params, $fragment);
1219 $ssl = common_config('site', 'ssl') === 'always'
1220 || StatusNet::isHTTPS()
1221 || common_is_sensitive($action);
1223 if (common_config('site','fancy')) {
1224 $url = common_path($path, $ssl, $addSession);
1226 if (mb_strpos($path, '/index.php') === 0) {
1227 $url = common_path($path, $ssl, $addSession);
1229 $url = common_path('index.php/'.$path, $ssl, $addSession);
1232 Event::handle('EndLocalURL', array(&$action, &$params, &$fragment, &$addSession, &$url));
1237 function common_is_sensitive($action)
1239 static $sensitive = array(
1244 'ApiOAuthRequestToken',
1245 'ApiOAuthAccessToken',
1246 'ApiOAuthAuthorize',
1252 if (Event::handle('SensitiveAction', array($action, &$ssl))) {
1253 $ssl = in_array($action, $sensitive);
1259 function common_path($relative, $ssl=false, $addSession=true)
1261 $pathpart = (common_config('site', 'path')) ? common_config('site', 'path')."/" : '';
1263 if (($ssl && (common_config('site', 'ssl') === 'sometimes'))
1264 || StatusNet::isHTTPS()
1265 || common_config('site', 'ssl') === 'always') {
1267 if (is_string(common_config('site', 'sslserver')) &&
1268 mb_strlen(common_config('site', 'sslserver')) > 0) {
1269 $serverpart = common_config('site', 'sslserver');
1270 } else if (common_config('site', 'server')) {
1271 $serverpart = common_config('site', 'server');
1273 common_log(LOG_ERR, 'Site server not configured, unable to determine site name.');
1277 if (common_config('site', 'server')) {
1278 $serverpart = common_config('site', 'server');
1280 common_log(LOG_ERR, 'Site server not configured, unable to determine site name.');
1285 $relative = common_inject_session($relative, $serverpart);
1288 return $proto.'://'.$serverpart.'/'.$pathpart.$relative;
1291 function common_inject_session($url, $serverpart = null)
1293 if (!common_have_session()) {
1297 if (empty($serverpart)) {
1298 $serverpart = parse_url($url, PHP_URL_HOST);
1301 $currentServer = (array_key_exists('HTTP_HOST', $_SERVER)) ? $_SERVER['HTTP_HOST'] : null;
1303 // Are we pointing to another server (like an SSL server?)
1305 if (!empty($currentServer) && 0 != strcasecmp($currentServer, $serverpart)) {
1306 // Pass the session ID as a GET parameter
1307 $sesspart = session_name() . '=' . session_id();
1308 $i = strpos($url, '?');
1309 if ($i === false) { // no GET params, just append
1310 $url .= '?' . $sesspart;
1312 $url = substr($url, 0, $i + 1).$sesspart.'&'.substr($url, $i + 1);
1319 function common_date_string($dt)
1321 // XXX: do some sexy date formatting
1322 // return date(DATE_RFC822, $dt);
1323 $t = strtotime($dt);
1327 if ($now < $t) { // that shouldn't happen!
1328 return common_exact_date($dt);
1329 } else if ($diff < 60) {
1330 // TRANS: Used in notices to indicate when the notice was made compared to now.
1331 return _('a few seconds ago');
1332 } else if ($diff < 92) {
1333 // TRANS: Used in notices to indicate when the notice was made compared to now.
1334 return _('about a minute ago');
1335 } else if ($diff < 3300) {
1336 $minutes = round($diff/60);
1337 // TRANS: Used in notices to indicate when the notice was made compared to now.
1338 return sprintf( _m('about one minute ago', 'about %d minutes ago', $minutes), $minutes);
1339 } else if ($diff < 5400) {
1340 // TRANS: Used in notices to indicate when the notice was made compared to now.
1341 return _('about an hour ago');
1342 } else if ($diff < 22 * 3600) {
1343 $hours = round($diff/3600);
1344 // TRANS: Used in notices to indicate when the notice was made compared to now.
1345 return sprintf( _m('about one hour ago', 'about %d hours ago', $hours), $hours);
1346 } else if ($diff < 37 * 3600) {
1347 // TRANS: Used in notices to indicate when the notice was made compared to now.
1348 return _('about a day ago');
1349 } else if ($diff < 24 * 24 * 3600) {
1350 $days = round($diff/(24*3600));
1351 // TRANS: Used in notices to indicate when the notice was made compared to now.
1352 return sprintf( _m('about one day ago', 'about %d days ago', $days), $days);
1353 } else if ($diff < 46 * 24 * 3600) {
1354 // TRANS: Used in notices to indicate when the notice was made compared to now.
1355 return _('about a month ago');
1356 } else if ($diff < 330 * 24 * 3600) {
1357 $months = round($diff/(30*24*3600));
1358 // TRANS: Used in notices to indicate when the notice was made compared to now.
1359 return sprintf( _m('about one month ago', 'about %d months ago',$months), $months);
1360 } else if ($diff < 480 * 24 * 3600) {
1361 // TRANS: Used in notices to indicate when the notice was made compared to now.
1362 return _('about a year ago');
1364 return common_exact_date($dt);
1368 function common_exact_date($dt)
1374 $_utc = new DateTimeZone('UTC');
1375 $_siteTz = new DateTimeZone(common_timezone());
1378 $dateStr = date('d F Y H:i:s', strtotime($dt));
1379 $d = new DateTime($dateStr, $_utc);
1380 $d->setTimezone($_siteTz);
1381 // TRANS: Human-readable full date-time specification (formatting on http://php.net/date)
1382 return $d->format(_('l, d-M-Y H:i:s T'));
1385 function common_date_w3dtf($dt)
1387 $dateStr = date('d F Y H:i:s', strtotime($dt));
1388 $d = new DateTime($dateStr, new DateTimeZone('UTC'));
1389 $d->setTimezone(new DateTimeZone(common_timezone()));
1390 return $d->format(DATE_W3C);
1393 function common_date_rfc2822($dt)
1395 $dateStr = date('d F Y H:i:s', strtotime($dt));
1396 $d = new DateTime($dateStr, new DateTimeZone('UTC'));
1397 $d->setTimezone(new DateTimeZone(common_timezone()));
1398 return $d->format('r');
1401 function common_date_iso8601($dt)
1403 $dateStr = date('d F Y H:i:s', strtotime($dt));
1404 $d = new DateTime($dateStr, new DateTimeZone('UTC'));
1405 $d->setTimezone(new DateTimeZone(common_timezone()));
1406 return $d->format('c');
1409 function common_sql_now()
1411 return common_sql_date(time());
1414 function common_sql_date($datetime)
1416 return strftime('%Y-%m-%d %H:%M:%S', $datetime);
1420 * Return an SQL fragment to calculate an age-based weight from a given
1421 * timestamp or datetime column.
1423 * @param string $column name of field we're comparing against current time
1424 * @param integer $dropoff divisor for age in seconds before exponentiation
1425 * @return string SQL fragment
1427 function common_sql_weight($column, $dropoff)
1429 if (common_config('db', 'type') == 'pgsql') {
1430 // PostgreSQL doesn't support timestampdiff function.
1431 // @fixme will this use the right time zone?
1432 // @fixme does this handle cross-year subtraction correctly?
1433 return "sum(exp(-extract(epoch from (now() - $column)) / $dropoff))";
1435 return "sum(exp(timestampdiff(second, utc_timestamp(), $column) / $dropoff))";
1439 function common_redirect($url, $code=307)
1441 static $status = array(301 => "Moved Permanently",
1444 307 => "Temporary Redirect");
1446 header('HTTP/1.1 '.$code.' '.$status[$code]);
1447 header("Location: $url");
1448 header("Connection: close");
1450 $xo = new XMLOutputter();
1452 '-//W3C//DTD XHTML 1.0 Strict//EN',
1453 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd');
1454 $xo->element('a', array('href' => $url), $url);
1459 // Stick the notice on the queue
1461 function common_enqueue_notice($notice)
1463 static $localTransports = array('ping');
1465 $transports = array();
1466 if (common_config('sms', 'enabled')) {
1467 $transports[] = 'sms';
1469 if (Event::hasHandler('HandleQueuedNotice')) {
1470 $transports[] = 'plugin';
1473 // We can skip these for gatewayed notices.
1474 if ($notice->isLocal()) {
1475 $transports = array_merge($transports, $localTransports);
1478 if (Event::handle('StartEnqueueNotice', array($notice, &$transports))) {
1480 $qm = QueueManager::get();
1482 foreach ($transports as $transport)
1484 $qm->enqueue($notice, $transport);
1487 Event::handle('EndEnqueueNotice', array($notice, $transports));
1493 function common_profile_url($nickname)
1495 return common_local_url('showstream', array('nickname' => $nickname),
1500 * Should make up a reasonable root URL
1502 function common_root_url($ssl=false)
1504 $url = common_path('', $ssl, false);
1505 $i = strpos($url, '?');
1507 $url = substr($url, 0, $i);
1513 * returns $bytes bytes of random data as a hexadecimal string
1515 function common_random_hexstr($bytes)
1517 $str = @file_exists('/dev/urandom')
1518 ? common_urandom($bytes)
1519 : common_mtrand($bytes);
1522 for ($i = 0; $i < $bytes; $i++) {
1523 $hexstr .= sprintf("%02x", ord($str[$i]));
1528 function common_urandom($bytes)
1530 $h = fopen('/dev/urandom', 'rb');
1532 $src = fread($h, $bytes);
1537 function common_mtrand($bytes)
1540 for ($i = 0; $i < $bytes; $i++) {
1541 $str .= chr(mt_rand(0, 255));
1547 * Record the given URL as the return destination for a future
1548 * form submission, to be read by common_get_returnto().
1550 * @param string $url
1552 * @fixme as a session-global setting, this can allow multiple forms
1553 * to conflict and overwrite each others' returnto destinations if
1554 * the user has multiple tabs or windows open.
1556 * Should refactor to index with a token or otherwise only pass the
1557 * data along its intended path.
1559 function common_set_returnto($url)
1561 common_ensure_session();
1562 $_SESSION['returnto'] = $url;
1566 * Fetch a return-destination URL previously recorded by
1567 * common_set_returnto().
1569 * @return mixed URL string or null
1571 * @fixme as a session-global setting, this can allow multiple forms
1572 * to conflict and overwrite each others' returnto destinations if
1573 * the user has multiple tabs or windows open.
1575 * Should refactor to index with a token or otherwise only pass the
1576 * data along its intended path.
1578 function common_get_returnto()
1580 common_ensure_session();
1581 return (array_key_exists('returnto', $_SESSION)) ? $_SESSION['returnto'] : null;
1584 function common_timestamp()
1586 return date('YmdHis');
1589 function common_ensure_syslog()
1591 static $initialized = false;
1592 if (!$initialized) {
1593 openlog(common_config('syslog', 'appname'), 0,
1594 common_config('syslog', 'facility'));
1595 $initialized = true;
1599 function common_log_line($priority, $msg)
1601 static $syslog_priorities = array('LOG_EMERG', 'LOG_ALERT', 'LOG_CRIT', 'LOG_ERR',
1602 'LOG_WARNING', 'LOG_NOTICE', 'LOG_INFO', 'LOG_DEBUG');
1603 return date('Y-m-d H:i:s') . ' ' . $syslog_priorities[$priority] . ': ' . $msg . PHP_EOL;
1606 function common_request_id()
1609 $server = common_config('site', 'server');
1610 if (php_sapi_name() == 'cli') {
1611 $script = basename($_SERVER['PHP_SELF']);
1612 return "$server:$script:$pid";
1614 static $req_id = null;
1615 if (!isset($req_id)) {
1616 $req_id = substr(md5(mt_rand()), 0, 8);
1618 if (isset($_SERVER['REQUEST_URI'])) {
1619 $url = $_SERVER['REQUEST_URI'];
1621 $method = $_SERVER['REQUEST_METHOD'];
1622 return "$server:$pid.$req_id $method $url";
1626 function common_log($priority, $msg, $filename=null)
1628 if(Event::handle('StartLog', array(&$priority, &$msg, &$filename))){
1629 $msg = (empty($filename)) ? $msg : basename($filename) . ' - ' . $msg;
1630 $msg = '[' . common_request_id() . '] ' . $msg;
1631 $logfile = common_config('site', 'logfile');
1633 $log = fopen($logfile, "a");
1635 $output = common_log_line($priority, $msg);
1636 fwrite($log, $output);
1640 common_ensure_syslog();
1641 syslog($priority, $msg);
1643 Event::handle('EndLog', array($priority, $msg, $filename));
1647 function common_debug($msg, $filename=null)
1650 common_log(LOG_DEBUG, basename($filename).' - '.$msg);
1652 common_log(LOG_DEBUG, $msg);
1656 function common_log_db_error(&$object, $verb, $filename=null)
1660 $objstr = common_log_objstring($object);
1661 $last_error = &$_PEAR->getStaticProperty('DB_DataObject','lastError');
1662 if (is_object($last_error)) {
1663 $msg = $last_error->message;
1665 $msg = 'Unknown error (' . var_export($last_error, true) . ')';
1667 common_log(LOG_ERR, $msg . '(' . $verb . ' on ' . $objstr . ')', $filename);
1670 function common_log_objstring(&$object)
1672 if (is_null($object)) {
1675 if (!($object instanceof DB_DataObject)) {
1678 $arr = $object->toArray();
1680 foreach ($arr as $k => $v) {
1681 if (is_object($v)) {
1682 $fields[] = "$k='".get_class($v)."'";
1684 $fields[] = "$k='$v'";
1687 $objstring = $object->tableName() . '[' . implode(',', $fields) . ']';
1691 function common_valid_http_url($url, $secure=false)
1693 // If $secure is true, only allow https URLs to pass
1694 // (if false, we use '?' in 'https?' to say the 's' is optional)
1695 $regex = $secure ? '/^https$/' : '/^https?$/';
1696 return filter_var($url, FILTER_VALIDATE_URL)
1697 && preg_match($regex, parse_url($url, PHP_URL_SCHEME));
1700 function common_valid_tag($tag)
1702 if (preg_match('/^tag:(.*?),(\d{4}(-\d{2}(-\d{2})?)?):(.*)$/', $tag, $matches)) {
1703 return (Validate::email($matches[1]) ||
1704 preg_match('/^([\w-\.]+)$/', $matches[1]));
1710 * Determine if given domain or address literal is valid
1711 * eg for use in JIDs and URLs. Does not check if the domain
1714 * @param string $domain
1715 * @return boolean valid or not
1717 function common_valid_domain($domain)
1719 $octet = "(?:25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]|[0-9])";
1720 $ipv4 = "(?:$octet(?:\.$octet){3})";
1721 if (preg_match("/^$ipv4$/u", $domain)) return true;
1723 $group = "(?:[0-9a-f]{1,4})";
1724 $ipv6 = "(?:\[($group(?::$group){0,7})?(::)?($group(?::$group){0,7})?\])"; // http://tools.ietf.org/html/rfc3513#section-2.2
1726 if (preg_match("/^$ipv6$/ui", $domain, $matches)) {
1727 $before = explode(":", $matches[1]);
1728 $zeroes = $matches[2];
1729 $after = explode(":", $matches[3]);
1737 $explicit = count($before) + count($after);
1738 if ($explicit < $min || $explicit > $max) {
1745 require_once "Net/IDNA.php";
1746 $idn = Net_IDNA::getInstance();
1747 $domain = $idn->encode($domain);
1748 } catch (Exception $e) {
1752 $subdomain = "(?:[a-z0-9][a-z0-9-]*)"; // @fixme
1753 $fqdn = "(?:$subdomain(?:\.$subdomain)*\.?)";
1755 return preg_match("/^$fqdn$/ui", $domain);
1758 /* Following functions are copied from MediaWiki GlobalFunctions.php
1759 * and written by Evan Prodromou. */
1761 function common_accept_to_prefs($accept, $def = '*/*')
1763 // No arg means accept anything (per HTTP spec)
1765 return array($def => 1);
1770 $parts = explode(',', $accept);
1772 foreach($parts as $part) {
1773 // FIXME: doesn't deal with params like 'text/html; level=1'
1774 @list($value, $qpart) = explode(';', trim($part));
1776 if(!isset($qpart)) {
1778 } elseif(preg_match('/q\s*=\s*(\d*\.\d+)/', $qpart, $match)) {
1779 $prefs[$value] = $match[1];
1786 // Match by our supported file extensions
1787 function common_supported_ext_to_mime($fileext)
1789 // Accept a filename and take out the extension
1790 if (strpos($fileext, '.') !== false) {
1791 $fileext = substr(strrchr($fileext, '.'), 1);
1794 $supported = common_config('attachments', 'supported');
1795 foreach($supported as $type => $ext) {
1796 if ($ext === $fileext) {
1801 throw new ServerException('Unsupported file extension');
1804 // Match by our supported mime types
1805 function common_supported_mime_to_ext($mimetype)
1807 $supported = common_config('attachments', 'supported');
1808 foreach($supported as $type => $ext) {
1809 if ($mimetype === $type) {
1814 throw new ServerException('Unsupported MIME type');
1817 // The MIME "media" is the part before the slash (video in video/webm)
1818 function common_get_mime_media($type)
1820 $tmp = explode('/', $type);
1821 return strtolower($tmp[0]);
1824 function common_bare_mime($mimetype)
1826 $mimetype = mb_strtolower($mimetype);
1827 if ($semicolon = mb_strpos($mimetype, ';')) {
1828 $mimetype = mb_substr($mimetype, 0, $semicolon);
1833 function common_mime_type_match($type, $avail)
1835 if(array_key_exists($type, $avail)) {
1838 $parts = explode('/', $type);
1839 if(array_key_exists($parts[0] . '/*', $avail)) {
1840 return $parts[0] . '/*';
1841 } elseif(array_key_exists('*/*', $avail)) {
1849 function common_negotiate_type($cprefs, $sprefs)
1853 foreach(array_keys($sprefs) as $type) {
1854 $parts = explode('/', $type);
1855 if($parts[1] != '*') {
1856 $ckey = common_mime_type_match($type, $cprefs);
1858 $combine[$type] = $sprefs[$type] * $cprefs[$ckey];
1863 foreach(array_keys($cprefs) as $type) {
1864 $parts = explode('/', $type);
1865 if($parts[1] != '*' && !array_key_exists($type, $sprefs)) {
1866 $skey = common_mime_type_match($type, $sprefs);
1868 $combine[$type] = $sprefs[$skey] * $cprefs[$type];
1874 $besttype = 'text/html';
1876 foreach(array_keys($combine) as $type) {
1877 if($combine[$type] > $bestq) {
1879 $bestq = $combine[$type];
1883 if ('text/html' === $besttype) {
1884 return "text/html; charset=utf-8";
1889 function common_config($main, $sub)
1892 return (array_key_exists($main, $config) &&
1893 array_key_exists($sub, $config[$main])) ? $config[$main][$sub] : false;
1896 function common_config_set($main, $sub, $value)
1899 if (!array_key_exists($main, $config)) {
1900 $config[$main] = array();
1902 $config[$main][$sub] = $value;
1905 function common_config_append($main, $sub, $value)
1908 if (!array_key_exists($main, $config)) {
1909 $config[$main] = array();
1911 if (!array_key_exists($sub, $config[$main])) {
1912 $config[$main][$sub] = array();
1914 if (!is_array($config[$main][$sub])) {
1915 $config[$main][$sub] = array($config[$main][$sub]);
1917 array_push($config[$main][$sub], $value);
1921 * Pull arguments from a GET/POST/REQUEST array with first-level input checks:
1922 * strips "magic quotes" slashes if necessary, and kills invalid UTF-8 strings.
1924 * @param array $from
1927 function common_copy_args($from)
1930 $strip = get_magic_quotes_gpc();
1931 foreach ($from as $k => $v) {
1933 $to[$k] = common_copy_args($v);
1936 $v = stripslashes($v);
1938 $to[$k] = strval(common_validate_utf8($v));
1945 * Neutralise the evil effects of magic_quotes_gpc in the current request.
1946 * This is used before handing a request off to OAuthRequest::from_request.
1947 * @fixme Doesn't consider vars other than _POST and _GET?
1948 * @fixme Can't be undone and could corrupt data if run twice.
1950 function common_remove_magic_from_request()
1952 if(get_magic_quotes_gpc()) {
1953 $_POST=array_map('stripslashes',$_POST);
1954 $_GET=array_map('stripslashes',$_GET);
1958 function common_user_uri(&$user)
1960 return common_local_url('userbyid', array('id' => $user->id),
1964 // 36 alphanums - lookalikes (0, O, 1, I) = 32 chars = 5 bits
1966 function common_confirmation_code($bits)
1968 // 36 alphanums - lookalikes (0, O, 1, I) = 32 chars = 5 bits
1969 static $codechars = '23456789ABCDEFGHJKLMNPQRSTUVWXYZ';
1970 $chars = ceil($bits/5);
1972 for ($i = 0; $i < $chars; $i++) {
1973 // XXX: convert to string and back
1974 $num = hexdec(common_random_hexstr(1));
1975 // XXX: randomness is too precious to throw away almost
1976 // 40% of the bits we get!
1977 $code .= $codechars[$num%32];
1982 // convert markup to HTML
1983 function common_markup_to_html($c, $args=null)
1989 if (is_null($args)) {
1993 // XXX: not very efficient
1995 foreach ($args as $name => $value) {
1996 $c = preg_replace('/%%arg.'.$name.'%%/', $value, $c);
1999 $c = preg_replace_callback('/%%user.(\w+)%%/', function ($m) { return common_user_property($m[1]); }, $c);
2000 $c = preg_replace_callback('/%%action.(\w+)%%/', function ($m) { return common_local_url($m[1]); }, $c);
2001 $c = preg_replace_callback('/%%doc.(\w+)%%/', function ($m) { return common_local_url('doc', array('title'=>$m[1])); }, $c);
2002 $c = preg_replace_callback('/%%(\w+).(\w+)%%/', function ($m) { return common_config($m[1], $m[2]); }, $c);
2004 return \Michelf\Markdown::defaultTransform($c);
2007 function common_user_property($property)
2009 $profile = Profile::current();
2011 if (empty($profile)) {
2015 switch ($property) {
2021 return $profile->$property;
2025 return $profile->getAvatar(AVATAR_STREAM_SIZE);
2026 } catch (Exception $e) {
2031 return $profile->getBestName();
2038 function common_profile_uri($profile)
2042 if (!empty($profile)) {
2043 if (Event::handle('StartCommonProfileURI', array($profile, &$uri))) {
2044 $user = User::getKV('id', $profile->id);
2045 if ($user instanceof User) {
2046 $uri = $user->getUri();
2048 Event::handle('EndCommonProfileURI', array($profile, &$uri));
2052 // XXX: this is a very bad profile!
2056 function common_canonical_sms($sms)
2059 preg_replace('/\D/', '', $sms);
2063 function common_error_handler($errno, $errstr, $errfile, $errline, $errcontext)
2068 case E_COMPILE_ERROR:
2072 case E_RECOVERABLE_ERROR:
2073 common_log(LOG_ERR, "[$errno] $errstr ($errfile:$errline) [ABORT]");
2078 case E_COMPILE_WARNING:
2079 case E_CORE_WARNING:
2080 case E_USER_WARNING:
2081 common_log(LOG_WARNING, "[$errno] $errstr ($errfile:$errline)");
2086 common_log(LOG_NOTICE, "[$errno] $errstr ($errfile:$errline)");
2091 case E_USER_DEPRECATED:
2092 // XXX: config variable to log this stuff, too
2096 common_log(LOG_ERR, "[$errno] $errstr ($errfile:$errline) [UNKNOWN LEVEL, die()'ing]");
2101 // FIXME: show error page if we're on the Web
2102 /* Don't execute PHP internal error handler */
2106 function common_session_token()
2108 common_ensure_session();
2109 if (!array_key_exists('token', $_SESSION)) {
2110 $_SESSION['token'] = common_random_hexstr(64);
2112 return $_SESSION['token'];
2115 function common_license_terms($uri)
2117 if(preg_match('/creativecommons.org\/licenses\/([^\/]+)/', $uri, $matches)) {
2118 return explode('-',$matches[1]);
2123 function common_compatible_license($from, $to)
2125 $from_terms = common_license_terms($from);
2126 // public domain and cc-by are compatible with everything
2127 if(count($from_terms) == 1 && ($from_terms[0] == 'publicdomain' || $from_terms[0] == 'by')) {
2130 $to_terms = common_license_terms($to);
2131 // sa is compatible across versions. IANAL
2132 if(in_array('sa',$from_terms) || in_array('sa',$to_terms)) {
2133 return count(array_diff($from_terms, $to_terms)) == 0;
2135 // XXX: better compatibility check needed here!
2136 // Should at least normalise URIs
2137 return ($from == $to);
2141 * returns a quoted table name, if required according to config
2143 function common_database_tablename($tablename)
2145 if(common_config('db','quote_identifiers')) {
2146 $tablename = '"'. $tablename .'"';
2148 //table prefixes could be added here later
2153 * Shorten a URL with the current user's configured shortening service,
2154 * or ur1.ca if configured, or not at all if no shortening is set up.
2156 * @param string $long_url original URL
2157 * @param User $user to specify a particular user's options
2158 * @param boolean $force Force shortening (used when notice is too long)
2159 * @return string may return the original URL if shortening failed
2161 * @fixme provide a way to specify a particular shortener
2163 function common_shorten_url($long_url, User $user=null, $force = false)
2165 $long_url = trim($long_url);
2167 $user = common_current_user();
2169 $maxUrlLength = User_urlshortener_prefs::maxUrlLength($user);
2171 // $force forces shortening even if it's not strictly needed
2172 // I doubt URL shortening is ever 'strictly' needed. - ESP
2174 if (($maxUrlLength == -1 || mb_strlen($long_url) < $maxUrlLength) && !$force) {
2178 $shortenerName = User_urlshortener_prefs::urlShorteningService($user);
2180 if (Event::handle('StartShortenUrl',
2181 array($long_url, $shortenerName, &$shortenedUrl))) {
2182 if ($shortenerName == 'internal') {
2184 $f = File::processNew($long_url);
2185 $shortenedUrl = common_local_url('redirecturl', array('id' => $f->id));
2186 if ((mb_strlen($shortenedUrl) < mb_strlen($long_url)) || $force) {
2187 return $shortenedUrl;
2191 } catch (ServerException $e) {
2198 //URL was shortened, so return the result
2199 return trim($shortenedUrl);
2204 * @return mixed array($proxy, $ip) for web requests; proxy may be null
2205 * null if not a web request
2207 * @fixme X-Forwarded-For can be chained by multiple proxies;
2208 we should parse the list and provide a cleaner array
2209 * @fixme X-Forwarded-For can be forged by clients; only use them if trusted
2210 * @fixme X_Forwarded_For headers will override X-Forwarded-For read through $_SERVER;
2211 * use function to get exact request headers from Apache if possible.
2213 function common_client_ip()
2215 if (!isset($_SERVER) || !array_key_exists('REQUEST_METHOD', $_SERVER)) {
2219 if (array_key_exists('HTTP_X_FORWARDED_FOR', $_SERVER)) {
2220 if (array_key_exists('HTTP_CLIENT_IP', $_SERVER)) {
2221 $proxy = $_SERVER['HTTP_CLIENT_IP'];
2223 $proxy = $_SERVER['REMOTE_ADDR'];
2225 $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
2228 if (array_key_exists('HTTP_CLIENT_IP', $_SERVER)) {
2229 $ip = $_SERVER['HTTP_CLIENT_IP'];
2231 $ip = $_SERVER['REMOTE_ADDR'];
2235 return array($proxy, $ip);
2238 function common_url_to_nickname($url)
2240 static $bad = array('query', 'user', 'password', 'port', 'fragment');
2242 $parts = parse_url($url);
2244 // If any of these parts exist, this won't work
2246 foreach ($bad as $badpart) {
2247 if (array_key_exists($badpart, $parts)) {
2252 // We just have host and/or path
2254 // If it's just a host...
2255 if (array_key_exists('host', $parts) &&
2256 (!array_key_exists('path', $parts) || strcmp($parts['path'], '/') == 0))
2258 $hostparts = explode('.', $parts['host']);
2260 // Try to catch common idiom of nickname.service.tld
2262 if ((count($hostparts) > 2) &&
2263 (strlen($hostparts[count($hostparts) - 2]) > 3) && # try to skip .co.uk, .com.au
2264 (strcmp($hostparts[0], 'www') != 0))
2266 return common_nicknamize($hostparts[0]);
2268 // Do the whole hostname
2269 return common_nicknamize($parts['host']);
2272 if (array_key_exists('path', $parts)) {
2273 // Strip starting, ending slashes
2274 $path = preg_replace('@/$@', '', $parts['path']);
2275 $path = preg_replace('@^/@', '', $path);
2276 $path = basename($path);
2278 // Hack for MediaWiki user pages, in the form:
2279 // http://example.com/wiki/User:Myname
2280 // ('User' may be localized.)
2281 if (strpos($path, ':')) {
2282 $parts = array_filter(explode(':', $path));
2283 $path = $parts[count($parts) - 1];
2287 return common_nicknamize($path);
2295 function common_nicknamize($str)
2298 return Nickname::normalize($str);
2299 } catch (NicknameException $e) {
2304 function common_perf_counter($key, $val=null)
2306 global $_perfCounters;
2307 if (isset($_perfCounters)) {
2308 if (common_config('site', 'logperf')) {
2309 if (array_key_exists($key, $_perfCounters)) {
2310 $_perfCounters[$key][] = $val;
2312 $_perfCounters[$key] = array($val);
2314 if (common_config('site', 'logperf_detail')) {
2315 common_debug("PERF COUNTER HIT: $key $val");
2321 function common_log_perf_counters()
2323 if (common_config('site', 'logperf')) {
2324 global $_startTime, $_perfCounters;
2326 if (isset($_startTime)) {
2327 $endTime = microtime(true);
2328 $diff = round(($endTime - $_startTime) * 1000);
2329 common_debug("PERF runtime: ${diff}ms");
2331 $counters = $_perfCounters;
2333 foreach ($counters as $key => $values) {
2334 $count = count($values);
2335 $unique = count(array_unique($values));
2336 common_debug("PERF COUNTER: $key $count ($unique unique)");
2341 function common_is_email($str)
2343 return (strpos($str, '@') !== false);
2346 function common_init_stats()
2350 $_mem = memory_get_usage(true);
2351 $_ts = microtime(true);
2354 function common_log_delta($comment=null)
2361 $_mem = memory_get_usage(true);
2362 $_ts = microtime(true);
2364 $mtotal = $_mem - $mold;
2365 $ttotal = $_ts - $told;
2367 if (empty($comment)) {
2371 common_debug(sprintf("%s: %d %d", $comment, $mtotal, round($ttotal * 1000000)));
2374 function common_strip_html($html, $trim=true, $save_whitespace=false)
2376 if (!$save_whitespace) {
2377 $html = preg_replace('/\s+/', ' ', $html);
2379 $text = html_entity_decode(strip_tags($html), ENT_QUOTES, 'UTF-8');
2380 return $trim ? trim($text) : $text;