3 * Laconica - a distributed open-source microblogging tool
4 * Copyright (C) 2008, Controlez-Vous, 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, HTML, user, files) */
24 function common_server_error($msg, $code=500) {
25 static $status = array(500 => 'Internal Server Error',
26 501 => 'Not Implemented',
28 503 => 'Service Unavailable',
29 504 => 'Gateway Timeout',
30 505 => 'HTTP Version Not Supported');
32 if (!array_key_exists($code, $status)) {
36 $status_string = $status[$code];
38 header('HTTP/1.1 '.$code.' '.$status_string);
39 header('Content-type: text/plain');
47 function common_user_error($msg, $code=400) {
48 static $status = array(400 => 'Bad Request',
49 401 => 'Unauthorized',
50 402 => 'Payment Required',
53 405 => 'Method Not Allowed',
54 406 => 'Not Acceptable',
55 407 => 'Proxy Authentication Required',
56 408 => 'Request Timeout',
59 411 => 'Length Required',
60 412 => 'Precondition Failed',
61 413 => 'Request Entity Too Large',
62 414 => 'Request-URI Too Long',
63 415 => 'Unsupported Media Type',
64 416 => 'Requested Range Not Satisfiable',
65 417 => 'Expectation Failed');
67 if (!array_key_exists($code, $status)) {
71 $status_string = $status[$code];
73 header('HTTP/1.1 '.$code.' '.$status_string);
75 common_show_header('Error');
76 common_element('div', array('class' => 'error'), $msg);
82 # Start an HTML element
83 function common_element_start($tag, $attrs=NULL) {
85 $xw->startElement($tag);
86 if (is_array($attrs)) {
87 foreach ($attrs as $name => $value) {
88 $xw->writeAttribute($name, $value);
90 } else if (is_string($attrs)) {
91 $xw->writeAttribute('class', $attrs);
95 function common_element_end($tag) {
96 static $empty_tag = array('base', 'meta', 'link', 'hr',
97 'br', 'param', 'img', 'area',
100 # XXX: check namespace
101 if (in_array($tag, $empty_tag)) {
104 $xw->fullEndElement();
108 function common_element($tag, $attrs=NULL, $content=NULL) {
109 common_element_start($tag, $attrs);
111 if (!is_null($content)) {
114 common_element_end($tag);
117 function common_start_xml($doc=NULL, $public=NULL, $system=NULL, $indent=true) {
119 $xw = new XMLWriter();
120 $xw->openURI('php://output');
121 $xw->setIndent($indent);
122 $xw->startDocument('1.0', 'UTF-8');
124 $xw->writeDTD($doc, $public, $system);
128 function common_end_xml() {
134 function common_init_language() {
135 mb_internal_encoding('UTF-8');
136 $language = common_language();
137 # So we don't have to make people install the gettext locales
138 putenv('LANGUAGE='.$language);
139 putenv('LANG='.$language);
140 $locale_set = setlocale(LC_ALL, $language . ".utf8",
142 $language . ".utf-8",
143 $language . ".UTF-8",
145 bindtextdomain("laconica", common_config('site','locale_path'));
146 bind_textdomain_codeset("laconica", "UTF-8");
147 textdomain("laconica");
148 setlocale(LC_CTYPE, 'C');
150 common_log(LOG_INFO,'Language requested:'.$language.' - locale could not be set:',__FILE__);
154 define('PAGE_TYPE_PREFS', 'text/html,application/xhtml+xml,application/xml;q=0.3,text/xml;q=0.2');
156 function common_show_header($pagetitle, $callable=NULL, $data=NULL, $headercall=NULL) {
162 common_element_start('head');
163 common_element('title', NULL,
164 $pagetitle . " - " . $config['site']['name']);
165 common_element('link', array('rel' => 'stylesheet',
166 'type' => 'text/css',
167 'href' => theme_path('display.css') . '?version=' . LACONICA_VERSION,
168 'media' => 'screen, projection, tv'));
169 foreach (array(6,7) as $ver) {
170 if (file_exists(theme_file('ie'.$ver.'.css'))) {
171 # Yes, IE people should be put in jail.
172 $xw->writeComment('[if lte IE '.$ver.']><link rel="stylesheet" type="text/css" '.
173 'href="'.theme_path('ie'.$ver.'.css').'?version='.LACONICA_VERSION.'" /><![endif]');
177 common_element('script', array('type' => 'text/javascript',
178 'src' => common_path('js/jquery.min.js')),
180 common_element('script', array('type' => 'text/javascript',
181 'src' => common_path('js/jquery.form.js')),
183 common_element('script', array('type' => 'text/javascript',
184 'src' => common_path('js/xbImportNode.js')),
186 common_element('script', array('type' => 'text/javascript',
187 'src' => common_path('js/util.js?version='.LACONICA_VERSION)),
189 common_element('link', array('rel' => 'search', 'type' => 'application/opensearchdescription+xml',
190 'href' => common_local_url('opensearch', array('type' => 'people')),
191 'title' => common_config('site', 'name').' People Search'));
193 common_element('link', array('rel' => 'search', 'type' => 'application/opensearchdescription+xml',
194 'href' => common_local_url('opensearch', array('type' => 'notice')),
195 'title' => common_config('site', 'name').' Notice Search'));
199 call_user_func($callable, $data);
201 call_user_func($callable);
204 common_element_end('head');
205 common_element_start('body');
206 common_element_start('div', array('id' => 'wrap'));
207 common_element_start('div', array('id' => 'header'));
209 if ((isset($config['site']['logo']) && is_string($config['site']['logo']) && (strlen($config['site']['logo']) > 0))
210 || file_exists(theme_file('logo.png')))
212 common_element_start('a', array('href' => common_local_url('public')));
213 common_element('img', array('src' => isset($config['site']['logo']) ?
214 ($config['site']['logo']) : theme_path('logo.png'),
215 'alt' => $config['site']['name'],
217 common_element_end('a');
219 common_element_start('p', array('id' => 'branding'));
220 common_element('a', array('href' => common_local_url('public')),
221 $config['site']['name']);
222 common_element_end('p');
225 common_element('h1', 'pagetitle', $pagetitle);
229 call_user_func($headercall, $data);
231 call_user_func($headercall);
234 common_element_end('div');
235 common_element_start('div', array('id' => 'content'));
238 function common_start_html($type=NULL, $indent=true) {
241 $httpaccept = isset($_SERVER['HTTP_ACCEPT']) ? $_SERVER['HTTP_ACCEPT'] : NULL;
243 # XXX: allow content negotiation for RDF, RSS, or XRDS
245 $type = common_negotiate_type(common_accept_to_prefs($httpaccept),
246 common_accept_to_prefs(PAGE_TYPE_PREFS));
249 common_user_error(_('This page is not available in a media type you accept'), 406);
254 header('Content-Type: '.$type);
256 common_start_xml('html',
257 '-//W3C//DTD XHTML 1.0 Strict//EN',
258 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd', $indent);
260 # FIXME: correct language for interface
262 $language = common_language();
264 common_element_start('html', array('xmlns' => 'http://www.w3.org/1999/xhtml',
265 'xml:lang' => $language,
266 'lang' => $language));
269 function common_show_footer() {
271 common_element_end('div'); # content div
273 common_element_start('div', array('id' => 'footer'));
274 common_element_start('div', 'laconica');
275 if (common_config('site', 'broughtby')) {
276 $instr = _('**%%site.name%%** is a microblogging service brought to you by [%%site.broughtby%%](%%site.broughtbyurl%%). ');
278 $instr = _('**%%site.name%%** is a microblogging service. ');
280 $instr .= sprintf(_('It runs the [Laconica](http://laconi.ca/) microblogging software, version %s, available under the [GNU Affero General Public License](http://www.fsf.org/licensing/licenses/agpl-3.0.html).'), LACONICA_VERSION);
281 $output = common_markup_to_html($instr);
283 common_element_end('div');
284 common_element('img', array('id' => 'cc',
285 'src' => $config['license']['image'],
286 'alt' => $config['license']['title']));
287 common_element_start('p');
288 common_text(_('Unless otherwise specified, contents of this site are copyright by the contributors and available under the '));
289 common_element('a', array('class' => 'license',
291 'href' => $config['license']['url']),
292 $config['license']['title']);
293 common_text(_('. Contributors should be attributed by full name or nickname.'));
294 common_element_end('p');
295 common_element_end('div');
296 common_element_end('div');
297 common_element_end('body');
298 common_element_end('html');
302 function common_text($txt) {
307 function common_raw($xml) {
312 function common_nav_menu() {
313 $user = common_current_user();
314 common_element_start('ul', array('id' => 'nav'));
316 common_menu_item(common_local_url('all', array('nickname' => $user->nickname)),
319 common_menu_item(common_local_url('peoplesearch'), _('Search'));
321 common_menu_item(common_local_url('profilesettings'),
323 common_menu_item(common_local_url('invite'),
325 common_menu_item(common_local_url('logout'),
328 common_menu_item(common_local_url('login'), _('Login'));
329 if (!common_config('site', 'closed')) {
330 common_menu_item(common_local_url('register'), _('Register'));
332 common_menu_item(common_local_url('openidlogin'), _('OpenID'));
334 common_menu_item(common_local_url('doc', array('title' => 'help')),
336 common_element_end('ul');
339 function common_foot_menu() {
340 common_element_start('ul', array('id' => 'nav_sub'));
341 common_menu_item(common_local_url('doc', array('title' => 'help')),
343 common_menu_item(common_local_url('doc', array('title' => 'about')),
345 common_menu_item(common_local_url('doc', array('title' => 'faq')),
347 common_menu_item(common_local_url('doc', array('title' => 'privacy')),
349 common_menu_item(common_local_url('doc', array('title' => 'source')),
351 common_menu_item(common_local_url('doc', array('title' => 'contact')),
353 common_element_end('ul');
356 function common_menu_item($url, $text, $title=NULL, $is_selected=false) {
359 $lattrs['class'] = 'current';
361 common_element_start('li', $lattrs);
362 $attrs['href'] = $url;
364 $attrs['title'] = $title;
366 common_element('a', $attrs, $text);
367 common_element_end('li');
370 function common_input($id, $label, $value=NULL,$instructions=NULL) {
371 common_element_start('p');
372 common_element('label', array('for' => $id), $label);
373 $attrs = array('name' => $id,
375 'class' => 'input_text',
378 $attrs['value'] = htmlspecialchars($value);
380 common_element('input', $attrs);
382 common_element('span', 'input_instructions', $instructions);
384 common_element_end('p');
387 function common_checkbox($id, $label, $checked=false, $instructions=NULL, $value='true', $disabled=false)
389 common_element_start('p');
390 $attrs = array('name' => $id,
391 'type' => 'checkbox',
392 'class' => 'checkbox',
395 $attrs['value'] = htmlspecialchars($value);
398 $attrs['checked'] = 'checked';
401 $attrs['disabled'] = 'true';
403 common_element('input', $attrs);
406 common_element('span', 'checkbox_label', $label);
409 common_element('span', 'input_instructions', $instructions);
411 common_element_end('p');
414 function common_dropdown($id, $label, $content, $instructions=NULL, $blank_select=FALSE, $selected=NULL) {
415 common_element_start('p');
416 common_element('label', array('for' => $id), $label);
417 common_element_start('select', array('id' => $id, 'name' => $id));
419 common_element('option', array('value' => ''));
421 foreach ($content as $value => $option) {
422 if ($value == $selected) {
423 common_element('option', array('value' => $value, 'selected' => $value), $option);
425 common_element('option', array('value' => $value), $option);
428 common_element_end('select');
430 common_element('span', 'input_instructions', $instructions);
432 common_element_end('p');
434 function common_hidden($id, $value) {
435 common_element('input', array('name' => $id,
441 function common_password($id, $label, $instructions=NULL) {
442 common_element_start('p');
443 common_element('label', array('for' => $id), $label);
444 $attrs = array('name' => $id,
445 'type' => 'password',
446 'class' => 'password',
448 common_element('input', $attrs);
450 common_element('span', 'input_instructions', $instructions);
452 common_element_end('p');
455 function common_submit($id, $label, $cls='submit') {
457 common_element_start('p');
458 common_element('input', array('type' => 'submit',
463 common_element_end('p');
466 function common_textarea($id, $label, $content=NULL, $instructions=NULL) {
467 common_element_start('p');
468 common_element('label', array('for' => $id), $label);
469 common_element('textarea', array('rows' => 3,
473 ($content) ? $content : '');
475 common_element('span', 'input_instructions', $instructions);
477 common_element_end('p');
480 function common_timezone() {
481 if (common_logged_in()) {
482 $user = common_current_user();
483 if ($user->timezone) {
484 return $user->timezone;
489 return $config['site']['timezone'];
492 function common_language() {
494 // If there is a user logged in and they've set a language preference
495 // then return that one...
496 if (common_logged_in()) {
497 $user = common_current_user();
498 $user_language = $user->language;
500 return $user_language;
503 // Otherwise, find the best match for the languages requested by the
505 $httplang = isset($_SERVER['HTTP_ACCEPT_LANGUAGE']) ? $_SERVER['HTTP_ACCEPT_LANGUAGE'] : NULL;
506 if (!empty($httplang)) {
507 $language = client_prefered_language($httplang);
512 // Finally, if none of the above worked, use the site's default...
513 return common_config('site', 'language');
515 # salted, hashed passwords are stored in the DB
517 function common_munge_password($password, $id) {
518 return md5($password . $id);
521 # check if a username exists and has matching password
522 function common_check_user($nickname, $password) {
523 # NEVER allow blank passwords, even if they match the DB
524 if (mb_strlen($password) == 0) {
527 $user = User::staticGet('nickname', $nickname);
528 if (is_null($user)) {
531 if (0 == strcmp(common_munge_password($password, $user->id),
540 # is the current user logged in?
541 function common_logged_in() {
542 return (!is_null(common_current_user()));
545 function common_have_session() {
546 return (0 != strcmp(session_id(), ''));
549 function common_ensure_session() {
550 if (!common_have_session()) {
555 # Three kinds of arguments:
560 # Initialize to false; set to NULL if none found
564 function common_set_user($user) {
568 if (is_null($user) && common_have_session()) {
570 unset($_SESSION['userid']);
572 } else if (is_string($user)) {
574 $user = User::staticGet('nickname', $nickname);
575 } else if (!($user instanceof User)) {
580 common_ensure_session();
581 $_SESSION['userid'] = $user->id;
588 function common_set_cookie($key, $value, $expiration=0) {
589 $path = common_config('site', 'path');
590 $server = common_config('site', 'server');
592 if ($path && ($path != '/')) {
593 $cookiepath = '/' . $path . '/';
597 return setcookie($key,
604 define('REMEMBERME', 'rememberme');
605 define('REMEMBERME_EXPIRY', 30 * 24 * 60 * 60);
607 function common_rememberme($user=NULL) {
609 $user = common_current_user();
611 common_debug('No current user to remember', __FILE__);
615 $rm = new Remember_me();
616 $rm->code = common_good_rand(16);
617 $rm->user_id = $user->id;
618 $result = $rm->insert();
620 common_log_db_error($rm, 'INSERT', __FILE__);
621 common_debug('Error adding rememberme record for ' . $user->nickname, __FILE__);
624 common_log(LOG_INFO, 'adding rememberme cookie for ' . $user->nickname);
625 common_set_cookie(REMEMBERME,
626 implode(':', array($rm->user_id, $rm->code)),
627 time() + REMEMBERME_EXPIRY);
631 function common_remembered_user() {
635 $packed = isset($_COOKIE[REMEMBERME]) ? $_COOKIE[REMEMBERME] : NULL;
641 list($id, $code) = explode(':', $packed);
643 if (!$id || !$code) {
644 common_warning('Malformed rememberme cookie: ' . $packed);
649 $rm = Remember_me::staticGet($code);
652 common_warning('No such remember code: ' . $code);
657 if ($rm->user_id != $id) {
658 common_warning('Rememberme code for wrong user: ' . $rm->user_id . ' != ' . $id);
663 $user = User::staticGet($rm->user_id);
666 common_warning('No such user for rememberme: ' . $rm->user_id);
672 $result = $rm->delete();
675 common_log_db_error($rm, 'DELETE', __FILE__);
676 common_warning('Could not delete rememberme: ' . $code);
681 common_log(LOG_INFO, 'logging in ' . $user->nickname . ' using rememberme code ' . $rm->code);
683 common_set_user($user);
684 common_real_login(false);
686 # We issue a new cookie, so they can log in
687 # automatically again after this session
689 common_rememberme($user);
694 # must be called with a valid user!
696 function common_forgetme() {
697 common_set_cookie(REMEMBERME, '', 0);
700 # who is the current user?
701 function common_current_user() {
704 if ($_cur === false) {
706 if (isset($_REQUEST[session_name()]) || (isset($_SESSION['userid']) && $_SESSION['userid'])) {
707 common_ensure_session();
708 $id = isset($_SESSION['userid']) ? $_SESSION['userid'] : false;
710 $_cur = User::staticGet($id);
715 # that didn't work; try to remember; will init $_cur to NULL on failure
716 $_cur = common_remembered_user();
719 common_debug("Got User " . $_cur->nickname);
720 common_debug("Faking session on remembered user");
721 # XXX: Is this necessary?
722 $_SESSION['userid'] = $_cur->id;
729 # Logins that are 'remembered' aren't 'real' -- they're subject to
730 # cookie-stealing. So, we don't let them do certain things. New reg,
731 # OpenID, and password logins _are_ real.
733 function common_real_login($real=true) {
734 common_ensure_session();
735 $_SESSION['real_login'] = $real;
738 function common_is_real_login() {
739 return common_logged_in() && $_SESSION['real_login'];
742 # get canonical version of nickname for comparison
743 function common_canonical_nickname($nickname) {
744 # XXX: UTF-8 canonicalization (like combining chars)
745 return strtolower($nickname);
748 # get canonical version of email for comparison
749 function common_canonical_email($email) {
750 # XXX: canonicalize UTF-8
751 # XXX: lcase the domain part
755 define('URL_REGEX', '^|[ \t\r\n])((ftp|http|https|gopher|mailto|news|nntp|telnet|wais|file|prospero|aim|webcal):(([A-Za-z0-9$_.+!*(),;/?:@&~=-])|%[A-Fa-f0-9]{2}){2,}(#([a-zA-Z0-9][a-zA-Z0-9$_.+!*(),;/?:@&~=%-]*))?([A-Za-z0-9$_+!*();/?:~-]))');
757 function common_render_content($text, $notice) {
758 $r = common_render_text($text);
759 $id = $notice->profile_id;
760 $r = preg_replace('/(^|\s+)@([A-Za-z0-9]{1,64})/e', "'\\1@'.common_at_link($id, '\\2')", $r);
761 $r = preg_replace('/^T ([A-Z0-9]{1,64}) /e', "'T '.common_at_link($id, '\\1').' '", $r);
762 $r = preg_replace('/(^|\s+)@#([A-Za-z0-9]{1,64})/e', "'\\1@#'.common_at_hash_link($id, '\\2')", $r);
766 function common_render_text($text) {
767 $r = htmlspecialchars($text);
769 $r = preg_replace('/[\x{0}-\x{8}\x{b}-\x{c}\x{e}-\x{19}]/', '', $r);
770 $r = preg_replace_callback('@https?://[^\]>\s]+@', 'common_render_uri_thingy', $r);
771 $r = preg_replace('/(^|\s+)#([A-Za-z0-9_\-\.]{1,64})/e', "'\\1#'.common_tag_link('\\2')", $r);
776 function common_render_uri_thingy($matches) {
780 # Some heuristics for extracting URIs from surrounding punctuation
781 # Strip from trailing text...
782 if (preg_match('/^(.*)([,.:"\']+)$/', $uri, $matches)) {
784 $trailer = $matches[2];
788 ']' => '[', # technically disallowed in URIs, but used in Java docs
789 ')' => '(', # far too frequent in Wikipedia and MSDN
791 $final = substr($uri, -1, 1);
792 if (isset($pairs[$final])) {
793 $openers = substr_count($uri, $pairs[$final]);
794 $closers = substr_count($uri, $final);
795 if ($closers > $openers) {
796 // Assume the paren was opened outside the URI
797 $uri = substr($uri, 0, -1);
798 $trailer = $final . $trailer;
801 if ($longurl = common_longurl($uri)) {
802 $longurl = htmlentities($longurl, ENT_QUOTES, 'UTF-8');
803 $title = " title='$longurl'";
807 return '<a href="' . $uri . '"' . $title . ' class="extlink">' . $uri . '</a>' . $trailer;
810 function common_longurl($uri) {
811 $uri_e = urlencode($uri);
812 $longurl = unserialize(file_get_contents("http://api.longurl.org/v1/expand?format=php&url=$uri_e"));
813 if (empty($longurl['long_url']) || $uri === $longurl['long_url']) return false;
814 return stripslashes($longurl['long_url']);
817 function common_shorten_links($text) {
818 // \s = not a horizontal whitespace character (since PHP 5.2.4)
819 // RYM this should prevent * preceded URLs from being processed but it its a char
820 // $r = preg_replace('@[^*](https?://[^)\]>\s]+)@e', "common_shorten_link('\\1')", $r);
821 return preg_replace('@https?://[^)\]>\s]+@e', "common_shorten_link('\\0')", $text);
824 function common_shorten_link($long_url) {
826 $user = common_current_user();
828 $curlh = curl_init();
829 curl_setopt($curlh, CURLOPT_CONNECTTIMEOUT, 20); // # seconds to wait
830 curl_setopt($curlh, CURLOPT_USERAGENT, 'Laconica');
831 curl_setopt($curlh, CURLOPT_RETURNTRANSFER, true);
833 switch($user->urlshorteningservice) {
835 $short_url_service = new LilUrl;
836 $short_url = $short_url_service->shorten($long_url);
840 $short_url_service = new TightUrl;
841 $short_url = $short_url_service->shorten($long_url);
845 $short_url_service = new PtitUrl;
846 $short_url = $short_url_service->shorten($long_url);
850 curl_setopt($curlh, CURLOPT_URL, 'http://bit.ly/api?method=shorten&long_url='.urlencode($long_url));
851 $short_url = current(json_decode(curl_exec($curlh))->results)->hashUrl;
855 curl_setopt($curlh, CURLOPT_URL, 'http://is.gd/api.php?longurl='.urlencode($long_url));
856 $short_url = curl_exec($curlh);
859 curl_setopt($curlh, CURLOPT_URL, 'http://snipr.com/site/snip?r=simple&link='.urlencode($long_url));
860 $short_url = curl_exec($curlh);
863 curl_setopt($curlh, CURLOPT_URL, 'http://metamark.net/api/rest/simple?long_url='.urlencode($long_url));
864 $short_url = curl_exec($curlh);
867 curl_setopt($curlh, CURLOPT_URL, 'http://tinyurl.com/api-create.php?url='.urlencode($long_url));
868 $short_url = curl_exec($curlh);
882 function common_xml_safe_str($str) {
883 $xmlStr = htmlentities(iconv('UTF-8', 'UTF-8//IGNORE', $str), ENT_NOQUOTES, 'UTF-8');
885 // Replace control, formatting, and surrogate characters with '*', ala Twitter
886 return preg_replace('/[\p{Cc}\p{Cf}\p{Cs}]/u', '*', $str);
889 function common_tag_link($tag) {
890 $canonical = common_canonical_tag($tag);
891 $url = common_local_url('tag', array('tag' => $canonical));
892 return '<a href="' . htmlspecialchars($url) . '" rel="tag" class="hashlink">' . htmlspecialchars($tag) . '</a>';
895 function common_canonical_tag($tag) {
896 return strtolower(str_replace(array('-', '_', '.'), '', $tag));
899 function common_valid_profile_tag($str) {
900 return preg_match('/^[A-Za-z0-9_\-\.]{1,64}$/', $str);
903 function common_at_link($sender_id, $nickname) {
904 $sender = Profile::staticGet($sender_id);
905 $recipient = common_relative_profile($sender, common_canonical_nickname($nickname));
907 return '<a href="'.htmlspecialchars($recipient->profileurl).'" class="atlink">'.$nickname.'</a>';
913 function common_at_hash_link($sender_id, $tag) {
914 $user = User::staticGet($sender_id);
918 $tagged = Profile_tag::getTagged($user->id, common_canonical_tag($tag));
920 $url = common_local_url('subscriptions',
921 array('nickname' => $user->nickname,
923 return '<a href="'.htmlspecialchars($url).'" class="atlink">'.$tag.'</a>';
929 function common_relative_profile($sender, $nickname, $dt=NULL) {
930 # Try to find profiles this profile is subscribed to that have this nickname
931 $recipient = new Profile();
932 # XXX: use a join instead of a subquery
933 $recipient->whereAdd('EXISTS (SELECT subscribed from subscription where subscriber = '.$sender->id.' and subscribed = id)', 'AND');
934 $recipient->whereAdd('nickname = "' . trim($nickname) . '"', 'AND');
935 if ($recipient->find(TRUE)) {
936 # XXX: should probably differentiate between profiles with
937 # the same name by date of most recent update
940 # Try to find profiles that listen to this profile and that have this nickname
941 $recipient = new Profile();
942 # XXX: use a join instead of a subquery
943 $recipient->whereAdd('EXISTS (SELECT subscriber from subscription where subscribed = '.$sender->id.' and subscriber = id)', 'AND');
944 $recipient->whereAdd('nickname = "' . trim($nickname) . '"', 'AND');
945 if ($recipient->find(TRUE)) {
946 # XXX: should probably differentiate between profiles with
947 # the same name by date of most recent update
950 # If this is a local user, try to find a local user with that nickname.
951 $sender = User::staticGet($sender->id);
953 $recipient_user = User::staticGet('nickname', $nickname);
954 if ($recipient_user) {
955 return $recipient_user->getProfile();
958 # Otherwise, no links. @messages from local users to remote users,
959 # or from remote users to other remote users, are just
960 # outside our ability to make intelligent guesses about
964 // where should the avatar go for this user?
966 function common_avatar_filename($id, $extension, $size=NULL, $extra=NULL) {
970 return $id . '-' . $size . (($extra) ? ('-' . $extra) : '') . $extension;
972 return $id . '-original' . (($extra) ? ('-' . $extra) : '') . $extension;
976 function common_avatar_path($filename) {
978 return INSTALLDIR . '/avatar/' . $filename;
981 function common_avatar_url($filename) {
982 return common_path('avatar/'.$filename);
985 function common_avatar_display_url($avatar) {
986 $server = common_config('avatar', 'server');
988 return 'http://'.$server.'/'.$avatar->filename;
994 function common_default_avatar($size) {
995 static $sizenames = array(AVATAR_PROFILE_SIZE => 'profile',
996 AVATAR_STREAM_SIZE => 'stream',
997 AVATAR_MINI_SIZE => 'mini');
998 return theme_path('default-avatar-'.$sizenames[$size].'.png');
1001 function common_local_url($action, $args=NULL, $fragment=NULL) {
1003 if (common_config('site','fancy')) {
1004 $url = common_fancy_url($action, $args);
1006 $url = common_simple_url($action, $args);
1008 if (!is_null($fragment)) {
1009 $url .= '#'.$fragment;
1014 function common_fancy_url($action, $args=NULL) {
1015 switch (strtolower($action)) {
1017 if ($args && isset($args['page'])) {
1018 return common_path('?page=' . $args['page']);
1020 return common_path('');
1023 if ($args && isset($args['page'])) {
1024 return common_path('featured?page=' . $args['page']);
1026 return common_path('featured');
1029 if ($args && isset($args['page'])) {
1030 return common_path('favorited?page=' . $args['page']);
1032 return common_path('favorited');
1035 return common_path('rss');
1037 return common_path('xrds');
1039 return common_path('featuredrss');
1040 case 'favoritedrss':
1041 return common_path('favoritedrss');
1043 if ($args && $args['type']) {
1044 return common_path('opensearch/'.$args['type']);
1046 return common_path('opensearch/people');
1049 return common_path('doc/'.$args['title']);
1055 return common_path('main/'.$action);
1057 return common_path('main/tagother?id='.$args['id']);
1059 if ($args && $args['code']) {
1060 return common_path('main/register/'.$args['code']);
1062 return common_path('main/register');
1064 case 'remotesubscribe':
1065 if ($args && $args['nickname']) {
1066 return common_path('main/remote?nickname=' . $args['nickname']);
1068 return common_path('main/remote');
1071 return common_path($args['nickname'].'/nudge');
1073 return common_path('main/openid');
1074 case 'profilesettings':
1075 return common_path('settings/profile');
1076 case 'emailsettings':
1077 return common_path('settings/email');
1078 case 'openidsettings':
1079 return common_path('settings/openid');
1081 return common_path('settings/sms');
1082 case 'twittersettings':
1083 return common_path('settings/twitter');
1084 case 'othersettings':
1085 return common_path('settings/other');
1087 if ($args && $args['replyto']) {
1088 return common_path('notice/new?replyto='.$args['replyto']);
1090 return common_path('notice/new');
1093 return common_path('notice/'.$args['notice']);
1094 case 'deletenotice':
1095 if ($args && $args['notice']) {
1096 return common_path('notice/delete/'.$args['notice']);
1098 return common_path('notice/delete');
1100 case 'microsummary':
1103 return common_path($args['nickname'].'/'.$action);
1108 if ($args && isset($args['page'])) {
1109 return common_path($args['nickname'].'/'.$action.'?page=' . $args['page']);
1111 return common_path($args['nickname'].'/'.$action);
1113 case 'subscriptions':
1115 $nickname = $args['nickname'];
1116 unset($args['nickname']);
1117 if (isset($args['tag'])) {
1118 $tag = $args['tag'];
1119 unset($args['tag']);
1121 $params = http_build_query($args);
1123 return common_path($nickname.'/'.$action . (($tag) ? '/' . $tag : '') . '?' . $params);
1125 return common_path($nickname.'/'.$action . (($tag) ? '/' . $tag : ''));
1128 return common_path($args['nickname'].'/all/rss');
1130 return common_path($args['nickname'].'/replies/rss');
1132 return common_path($args['nickname'].'/rss');
1134 if ($args && isset($args['page'])) {
1135 return common_path($args['nickname'].'?page=' . $args['page']);
1137 return common_path($args['nickname']);
1140 case 'usertimeline':
1141 return common_path("api/statuses/user_timeline/".$args['nickname'].".atom");
1142 case 'confirmaddress':
1143 return common_path('main/confirmaddress/'.$args['code']);
1145 return common_path('user/'.$args['id']);
1146 case 'recoverpassword':
1147 $path = 'main/recoverpassword';
1148 if ($args['code']) {
1149 $path .= '/' . $args['code'];
1151 return common_path($path);
1153 return common_path('settings/im');
1154 case 'peoplesearch':
1155 return common_path('search/people' . (($args) ? ('?' . http_build_query($args)) : ''));
1156 case 'noticesearch':
1157 return common_path('search/notice' . (($args) ? ('?' . http_build_query($args)) : ''));
1158 case 'noticesearchrss':
1159 return common_path('search/notice/rss' . (($args) ? ('?' . http_build_query($args)) : ''));
1160 case 'avatarbynickname':
1161 return common_path($args['nickname'].'/avatar/'.$args['size']);
1163 if (isset($args['tag']) && $args['tag']) {
1164 $path = 'tag/' . $args['tag'];
1165 unset($args['tag']);
1169 return common_path($path . (($args) ? ('?' . http_build_query($args)) : ''));
1171 $path = 'peopletag/' . $args['tag'];
1172 unset($args['tag']);
1173 return common_path($path . (($args) ? ('?' . http_build_query($args)) : ''));
1175 return common_path('tags' . (($args) ? ('?' . http_build_query($args)) : ''));
1177 return common_path('main/favor');
1179 return common_path('main/disfavor');
1180 case 'showfavorites':
1181 if ($args && isset($args['page'])) {
1182 return common_path($args['nickname'].'/favorites?page=' . $args['page']);
1184 return common_path($args['nickname'].'/favorites');
1186 case 'favoritesrss':
1187 return common_path($args['nickname'].'/favorites/rss');
1189 return common_path('message/' . $args['message']);
1191 return common_path('message/new' . (($args) ? ('?' . http_build_query($args)) : ''));
1193 # XXX: do fancy URLs for all the API methods
1194 switch (strtolower($args['apiaction'])) {
1196 switch (strtolower($args['method'])) {
1197 case 'user_timeline.rss':
1198 return common_path('api/statuses/user_timeline/'.$args['argument'].'.rss');
1199 case 'user_timeline.atom':
1200 return common_path('api/statuses/user_timeline/'.$args['argument'].'.atom');
1201 case 'user_timeline.json':
1202 return common_path('api/statuses/user_timeline/'.$args['argument'].'.json');
1203 case 'user_timeline.xml':
1204 return common_path('api/statuses/user_timeline/'.$args['argument'].'.xml');
1205 default: return common_simple_url($action, $args);
1207 default: return common_simple_url($action, $args);
1210 if ($args && isset($args['seconds'])) {
1211 return common_path('main/sup?seconds='.$args['seconds']);
1213 return common_path('main/sup');
1216 return common_simple_url($action, $args);
1220 function common_simple_url($action, $args=NULL) {
1222 /* XXX: pretty URLs */
1225 foreach ($args as $key => $value) {
1226 $extra .= "&${key}=${value}";
1229 return common_path("index.php?action=${action}${extra}");
1232 function common_path($relative) {
1234 $pathpart = ($config['site']['path']) ? $config['site']['path']."/" : '';
1235 return "http://".$config['site']['server'].'/'.$pathpart.$relative;
1238 function common_date_string($dt) {
1239 // XXX: do some sexy date formatting
1240 // return date(DATE_RFC822, $dt);
1241 $t = strtotime($dt);
1245 if ($now < $t) { # that shouldn't happen!
1246 return common_exact_date($dt);
1247 } else if ($diff < 60) {
1248 return _('a few seconds ago');
1249 } else if ($diff < 92) {
1250 return _('about a minute ago');
1251 } else if ($diff < 3300) {
1252 return sprintf(_('about %d minutes ago'), round($diff/60));
1253 } else if ($diff < 5400) {
1254 return _('about an hour ago');
1255 } else if ($diff < 22 * 3600) {
1256 return sprintf(_('about %d hours ago'), round($diff/3600));
1257 } else if ($diff < 37 * 3600) {
1258 return _('about a day ago');
1259 } else if ($diff < 24 * 24 * 3600) {
1260 return sprintf(_('about %d days ago'), round($diff/(24*3600)));
1261 } else if ($diff < 46 * 24 * 3600) {
1262 return _('about a month ago');
1263 } else if ($diff < 330 * 24 * 3600) {
1264 return sprintf(_('about %d months ago'), round($diff/(30*24*3600)));
1265 } else if ($diff < 480 * 24 * 3600) {
1266 return _('about a year ago');
1268 return common_exact_date($dt);
1272 function common_exact_date($dt) {
1277 $_utc = new DateTimeZone('UTC');
1278 $_siteTz = new DateTimeZone(common_timezone());
1281 $dateStr = date('d F Y H:i:s', strtotime($dt));
1282 $d = new DateTime($dateStr, $_utc);
1283 $d->setTimezone($_siteTz);
1284 return $d->format(DATE_RFC850);
1287 function common_date_w3dtf($dt) {
1288 $dateStr = date('d F Y H:i:s', strtotime($dt));
1289 $d = new DateTime($dateStr, new DateTimeZone('UTC'));
1290 $d->setTimezone(new DateTimeZone(common_timezone()));
1291 return $d->format(DATE_W3C);
1294 function common_date_rfc2822($dt) {
1295 $dateStr = date('d F Y H:i:s', strtotime($dt));
1296 $d = new DateTime($dateStr, new DateTimeZone('UTC'));
1297 $d->setTimezone(new DateTimeZone(common_timezone()));
1298 return $d->format('r');
1301 function common_date_iso8601($dt) {
1302 $dateStr = date('d F Y H:i:s', strtotime($dt));
1303 $d = new DateTime($dateStr, new DateTimeZone('UTC'));
1304 $d->setTimezone(new DateTimeZone(common_timezone()));
1305 return $d->format('c');
1308 function common_sql_now() {
1309 return strftime('%Y-%m-%d %H:%M:%S', time());
1312 function common_redirect($url, $code=307) {
1313 static $status = array(301 => "Moved Permanently",
1316 307 => "Temporary Redirect");
1317 header("Status: ${code} $status[$code]");
1318 header("Location: $url");
1320 common_start_xml('a',
1321 '-//W3C//DTD XHTML 1.0 Strict//EN',
1322 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd');
1323 common_element('a', array('href' => $url), $url);
1328 function common_save_replies($notice) {
1329 # Alternative reply format
1331 if (preg_match('/^T ([A-Z0-9]{1,64}) /', $notice->content, $match)) {
1334 # extract all @messages
1335 $cnt = preg_match_all('/(?:^|\s)@([a-z0-9]{1,64})/', $notice->content, $match);
1339 if ($cnt || $tname) {
1340 # XXX: is there another way to make an array copy?
1341 $names = ($tname) ? array_unique(array_merge(array(strtolower($tname)), $match[1])) : array_unique($match[1]);
1344 $sender = Profile::staticGet($notice->profile_id);
1348 # store replied only for first @ (what user/notice what the reply directed,
1349 # we assume first @ is it)
1351 for ($i=0; $i<count($names); $i++) {
1352 $nickname = $names[$i];
1353 $recipient = common_relative_profile($sender, $nickname, $notice->created);
1357 if ($i == 0 && ($recipient->id != $sender->id) && !$notice->reply_to) { # Don't save reply to self
1358 $reply_for = $recipient;
1359 $recipient_notice = $reply_for->getCurrentNotice();
1360 if ($recipient_notice) {
1361 $orig = clone($notice);
1362 $notice->reply_to = $recipient_notice->id;
1363 $notice->update($orig);
1366 $reply = new Reply();
1367 $reply->notice_id = $notice->id;
1368 $reply->profile_id = $recipient->id;
1369 $id = $reply->insert();
1371 $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
1372 common_log(LOG_ERR, 'DB error inserting reply: ' . $last_error->message);
1373 common_server_error(sprintf(_('DB error inserting reply: %s'), $last_error->message));
1376 $replied[$recipient->id] = 1;
1380 # Hash format replies, too
1381 $cnt = preg_match_all('/(?:^|\s)@#([a-z0-9]{1,64})/', $notice->content, $match);
1383 foreach ($match[1] as $tag) {
1384 $tagged = Profile_tag::getTagged($sender->id, $tag);
1385 foreach ($tagged as $t) {
1386 if (!$replied[$t->id]) {
1387 $reply = new Reply();
1388 $reply->notice_id = $notice->id;
1389 $reply->profile_id = $t->id;
1390 $id = $reply->insert();
1392 common_log_db_error($reply, 'INSERT', __FILE__);
1401 function common_broadcast_notice($notice, $remote=false) {
1403 // Check to see if notice should go to Twitter
1404 $flink = Foreign_link::getByUserID($notice->profile_id, 1); // 1 == Twitter
1405 if (($flink->noticesync & FOREIGN_NOTICE_SEND) == FOREIGN_NOTICE_SEND) {
1407 // If it's not a Twitter-style reply, or if the user WANTS to send replies...
1409 if (!preg_match('/^@[a-zA-Z0-9_]{1,15}\b/u', $notice->content) ||
1410 (($flink->noticesync & FOREIGN_NOTICE_SEND_REPLY) == FOREIGN_NOTICE_SEND_REPLY)) {
1412 $result = common_twitter_broadcast($notice, $flink);
1415 common_debug('Unable to send notice: ' . $notice->id . ' to Twitter.', __FILE__);
1420 if (common_config('queue', 'enabled')) {
1422 return common_enqueue_notice($notice);
1424 return common_real_broadcast($notice, $remote);
1428 function common_twitter_broadcast($notice, $flink) {
1431 $fuser = $flink->getForeignUser();
1432 $twitter_user = $fuser->nickname;
1433 $twitter_password = $flink->credentials;
1434 $uri = 'http://www.twitter.com/statuses/update.json';
1436 // XXX: Hack to get around PHP cURL's use of @ being a a meta character
1437 $statustxt = preg_replace('/^@/', ' @', $notice->content);
1440 CURLOPT_USERPWD => "$twitter_user:$twitter_password",
1441 CURLOPT_POST => true,
1442 CURLOPT_POSTFIELDS => array(
1443 'status' => $statustxt,
1444 'source' => $config['integration']['source']
1446 CURLOPT_RETURNTRANSFER => true,
1447 CURLOPT_FAILONERROR => true,
1448 CURLOPT_HEADER => false,
1449 CURLOPT_FOLLOWLOCATION => true,
1450 CURLOPT_USERAGENT => "Laconica",
1451 CURLOPT_CONNECTTIMEOUT => 120, // XXX: Scary!!!! How long should this be?
1452 CURLOPT_TIMEOUT => 120
1455 $ch = curl_init($uri);
1456 curl_setopt_array($ch, $options);
1457 $data = curl_exec($ch);
1458 $errmsg = curl_error($ch);
1461 common_debug("cURL error: $errmsg - trying to send notice for $twitter_user.",
1469 common_debug("No data returned by Twitter's API trying to send update for $twitter_user",
1474 // Twitter should return a status
1475 $status = json_decode($data);
1478 common_debug("Unexpected data returned by Twitter API trying to send update for $twitter_user",
1486 # Stick the notice on the queue
1488 function common_enqueue_notice($notice) {
1489 foreach (array('jabber', 'omb', 'sms', 'public') as $transport) {
1490 $qi = new Queue_item();
1491 $qi->notice_id = $notice->id;
1492 $qi->transport = $transport;
1493 $qi->created = $notice->created;
1494 $result = $qi->insert();
1496 $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
1497 common_log(LOG_ERR, 'DB error inserting queue item: ' . $last_error->message);
1500 common_log(LOG_DEBUG, 'complete queueing notice ID = ' . $notice->id . ' for ' . $transport);
1505 function common_dequeue_notice($notice) {
1506 $qi = Queue_item::staticGet($notice->id);
1508 $result = $qi->delete();
1510 $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
1511 common_log(LOG_ERR, 'DB error deleting queue item: ' . $last_error->message);
1514 common_log(LOG_DEBUG, 'complete dequeueing notice ID = ' . $notice->id);
1521 function common_real_broadcast($notice, $remote=false) {
1524 # Make sure we have the OMB stuff
1525 require_once(INSTALLDIR.'/lib/omb.php');
1526 $success = omb_broadcast_remote_subscribers($notice);
1528 common_log(LOG_ERR, 'Error in OMB broadcast for notice ' . $notice->id);
1532 require_once(INSTALLDIR.'/lib/jabber.php');
1533 $success = jabber_broadcast_notice($notice);
1535 common_log(LOG_ERR, 'Error in jabber broadcast for notice ' . $notice->id);
1539 require_once(INSTALLDIR.'/lib/mail.php');
1540 $success = mail_broadcast_notice_sms($notice);
1542 common_log(LOG_ERR, 'Error in sms broadcast for notice ' . $notice->id);
1546 $success = jabber_public_notice($notice);
1548 common_log(LOG_ERR, 'Error in public broadcast for notice ' . $notice->id);
1551 // XXX: broadcast notices to other IM
1555 function common_broadcast_profile($profile) {
1556 // XXX: optionally use a queue system like http://code.google.com/p/microapps/wiki/NQDQ
1557 require_once(INSTALLDIR.'/lib/omb.php');
1558 omb_broadcast_profile($profile);
1559 // XXX: Other broadcasts...?
1563 function common_profile_url($nickname) {
1564 return common_local_url('showstream', array('nickname' => $nickname));
1567 # Don't call if nobody's logged in
1569 function common_notice_form($action=NULL, $content=NULL) {
1570 $user = common_current_user();
1571 assert(!is_null($user));
1572 common_element_start('form', array('id' => 'status_form',
1574 'action' => common_local_url('newnotice')));
1575 common_element_start('p');
1576 common_element('label', array('for' => 'status_textarea',
1577 'id' => 'status_label'),
1578 sprintf(_('What\'s up, %s?'), $user->nickname));
1579 common_element('span', array('id' => 'counter', 'class' => 'counter'), '140');
1580 common_element('textarea', array('id' => 'status_textarea',
1583 'name' => 'status_textarea'),
1584 ($content) ? $content : '');
1585 common_hidden('token', common_session_token());
1587 common_hidden('returnto', $action);
1590 common_hidden('inreplyto', 'false');
1591 common_element('input', array('id' => 'status_submit',
1592 'name' => 'status_submit',
1594 'value' => _('Send')));
1595 common_element_end('p');
1596 common_element_end('form');
1599 # Should make up a reasonable root URL
1601 function common_root_url() {
1602 return common_path('');
1605 # returns $bytes bytes of random data as a hexadecimal string
1606 # "good" here is a goal and not a guarantee
1608 function common_good_rand($bytes) {
1609 # XXX: use random.org...?
1610 if (file_exists('/dev/urandom')) {
1611 return common_urandom($bytes);
1612 } else { # FIXME: this is probably not good enough
1613 return common_mtrand($bytes);
1617 function common_urandom($bytes) {
1618 $h = fopen('/dev/urandom', 'rb');
1620 $src = fread($h, $bytes);
1623 for ($i = 0; $i < $bytes; $i++) {
1624 $enc .= sprintf("%02x", (ord($src[$i])));
1629 function common_mtrand($bytes) {
1631 for ($i = 0; $i < $bytes; $i++) {
1632 $enc .= sprintf("%02x", mt_rand(0, 255));
1637 function common_set_returnto($url) {
1638 common_ensure_session();
1639 $_SESSION['returnto'] = $url;
1642 function common_get_returnto() {
1643 common_ensure_session();
1644 return $_SESSION['returnto'];
1647 function common_timestamp() {
1648 return date('YmdHis');
1651 function common_ensure_syslog() {
1652 static $initialized = false;
1653 if (!$initialized) {
1655 openlog($config['syslog']['appname'], 0, LOG_USER);
1656 $initialized = true;
1660 function common_log($priority, $msg, $filename=NULL) {
1661 $logfile = common_config('site', 'logfile');
1663 $log = fopen($logfile, "a");
1665 static $syslog_priorities = array('LOG_EMERG', 'LOG_ALERT', 'LOG_CRIT', 'LOG_ERR',
1666 'LOG_WARNING', 'LOG_NOTICE', 'LOG_INFO', 'LOG_DEBUG');
1667 $output = date('Y-m-d H:i:s') . ' ' . $syslog_priorities[$priority] . ': ' . $msg . "\n";
1668 fwrite($log, $output);
1672 common_ensure_syslog();
1673 syslog($priority, $msg);
1677 function common_debug($msg, $filename=NULL) {
1679 common_log(LOG_DEBUG, basename($filename).' - '.$msg);
1681 common_log(LOG_DEBUG, $msg);
1685 function common_log_db_error(&$object, $verb, $filename=NULL) {
1686 $objstr = common_log_objstring($object);
1687 $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
1688 common_log(LOG_ERR, $last_error->message . '(' . $verb . ' on ' . $objstr . ')', $filename);
1691 function common_log_objstring(&$object) {
1692 if (is_null($object)) {
1695 $arr = $object->toArray();
1697 foreach ($arr as $k => $v) {
1698 $fields[] = "$k='$v'";
1700 $objstring = $object->tableName() . '[' . implode(',', $fields) . ']';
1704 function common_valid_http_url($url) {
1705 return Validate::uri($url, array('allowed_schemes' => array('http', 'https')));
1708 function common_valid_tag($tag) {
1709 if (preg_match('/^tag:(.*?),(\d{4}(-\d{2}(-\d{2})?)?):(.*)$/', $tag, $matches)) {
1710 return (Validate::email($matches[1]) ||
1711 preg_match('/^([\w-\.]+)$/', $matches[1]));
1716 # Does a little before-after block for next/prev page
1718 function common_pagination($have_before, $have_after, $page, $action, $args=NULL) {
1720 if ($have_before || $have_after) {
1721 common_element_start('div', array('id' => 'pagination'));
1722 common_element_start('ul', array('id' => 'nav_pagination'));
1726 $pargs = array('page' => $page-1);
1727 $newargs = ($args) ? array_merge($args,$pargs) : $pargs;
1729 common_element_start('li', 'before');
1730 common_element('a', array('href' => common_local_url($action, $newargs)),
1732 common_element_end('li');
1736 $pargs = array('page' => $page+1);
1737 $newargs = ($args) ? array_merge($args,$pargs) : $pargs;
1738 common_element_start('li', 'after');
1739 common_element('a', array('href' => common_local_url($action, $newargs)),
1741 common_element_end('li');
1744 if ($have_before || $have_after) {
1745 common_element_end('ul');
1746 common_element_end('div');
1750 /* Following functions are copied from MediaWiki GlobalFunctions.php
1751 * and written by Evan Prodromou. */
1753 function common_accept_to_prefs($accept, $def = '*/*') {
1754 # No arg means accept anything (per HTTP spec)
1756 return array($def => 1);
1761 $parts = explode(',', $accept);
1763 foreach($parts as $part) {
1764 # FIXME: doesn't deal with params like 'text/html; level=1'
1765 @list($value, $qpart) = explode(';', $part);
1767 if(!isset($qpart)) {
1769 } elseif(preg_match('/q\s*=\s*(\d*\.\d+)/', $qpart, $match)) {
1770 $prefs[$value] = $match[1];
1777 function common_mime_type_match($type, $avail) {
1778 if(array_key_exists($type, $avail)) {
1781 $parts = explode('/', $type);
1782 if(array_key_exists($parts[0] . '/*', $avail)) {
1783 return $parts[0] . '/*';
1784 } elseif(array_key_exists('*/*', $avail)) {
1792 function common_negotiate_type($cprefs, $sprefs) {
1795 foreach(array_keys($sprefs) as $type) {
1796 $parts = explode('/', $type);
1797 if($parts[1] != '*') {
1798 $ckey = common_mime_type_match($type, $cprefs);
1800 $combine[$type] = $sprefs[$type] * $cprefs[$ckey];
1805 foreach(array_keys($cprefs) as $type) {
1806 $parts = explode('/', $type);
1807 if($parts[1] != '*' && !array_key_exists($type, $sprefs)) {
1808 $skey = common_mime_type_match($type, $sprefs);
1810 $combine[$type] = $sprefs[$skey] * $cprefs[$type];
1816 $besttype = "text/html";
1818 foreach(array_keys($combine) as $type) {
1819 if($combine[$type] > $bestq) {
1821 $bestq = $combine[$type];
1828 function common_config($main, $sub) {
1830 return isset($config[$main][$sub]) ? $config[$main][$sub] : false;
1833 function common_copy_args($from) {
1835 $strip = get_magic_quotes_gpc();
1836 foreach ($from as $k => $v) {
1837 $to[$k] = ($strip) ? stripslashes($v) : $v;
1842 // Neutralise the evil effects of magic_quotes_gpc in the current request.
1843 // This is used before handing a request off to OAuthRequest::from_request.
1844 function common_remove_magic_from_request() {
1845 if(get_magic_quotes_gpc()) {
1846 $_POST=array_map('stripslashes',$_POST);
1847 $_GET=array_map('stripslashes',$_GET);
1851 function common_user_uri(&$user) {
1852 return common_local_url('userbyid', array('id' => $user->id));
1855 function common_notice_uri(&$notice) {
1856 return common_local_url('shownotice',
1857 array('notice' => $notice->id));
1860 # 36 alphanums - lookalikes (0, O, 1, I) = 32 chars = 5 bits
1862 function common_confirmation_code($bits) {
1863 # 36 alphanums - lookalikes (0, O, 1, I) = 32 chars = 5 bits
1864 static $codechars = '23456789ABCDEFGHJKLMNPQRSTUVWXYZ';
1865 $chars = ceil($bits/5);
1867 for ($i = 0; $i < $chars; $i++) {
1868 # XXX: convert to string and back
1869 $num = hexdec(common_good_rand(1));
1870 # XXX: randomness is too precious to throw away almost
1871 # 40% of the bits we get!
1872 $code .= $codechars[$num%32];
1877 # convert markup to HTML
1879 function common_markup_to_html($c) {
1880 $c = preg_replace('/%%action.(\w+)%%/e', "common_local_url('\\1')", $c);
1881 $c = preg_replace('/%%doc.(\w+)%%/e', "common_local_url('doc', array('title'=>'\\1'))", $c);
1882 $c = preg_replace('/%%(\w+).(\w+)%%/e', 'common_config(\'\\1\', \'\\2\')', $c);
1883 return Markdown($c);
1886 function common_profile_avatar_url($profile, $size=AVATAR_PROFILE_SIZE) {
1887 $avatar = $profile->getAvatar($size);
1889 return common_avatar_display_url($avatar);
1891 return common_default_avatar($size);
1895 function common_profile_uri($profile) {
1899 $user = User::staticGet($profile->id);
1904 $remote = Remote_profile::staticGet($profile->id);
1906 return $remote->uri;
1908 # XXX: this is a very bad profile!
1912 function common_canonical_sms($sms) {
1914 preg_replace('/\D/', '', $sms);
1918 function common_error_handler($errno, $errstr, $errfile, $errline, $errcontext) {
1921 common_log(LOG_ERR, "[$errno] $errstr ($errfile:$errline)");
1925 case E_USER_WARNING:
1926 common_log(LOG_WARNING, "[$errno] $errstr ($errfile:$errline)");
1930 common_log(LOG_NOTICE, "[$errno] $errstr ($errfile:$errline)");
1934 # FIXME: show error page if we're on the Web
1935 /* Don't execute PHP internal error handler */
1939 function common_session_token() {
1940 common_ensure_session();
1941 if (!array_key_exists('token', $_SESSION)) {
1942 $_SESSION['token'] = common_good_rand(64);
1944 return $_SESSION['token'];
1947 function common_disfavor_form($notice) {
1948 common_element_start('form', array('id' => 'disfavor-' . $notice->id,
1950 'class' => 'disfavor',
1951 'action' => common_local_url('disfavor')));
1953 common_element('input', array('type' => 'hidden',
1954 'name' => 'token-'. $notice->id,
1955 'id' => 'token-'. $notice->id,
1957 'value' => common_session_token()));
1959 common_element('input', array('type' => 'hidden',
1961 'id' => 'notice-n'. $notice->id,
1962 'class' => 'notice',
1963 'value' => $notice->id));
1965 common_element('input', array('type' => 'submit',
1966 'id' => 'disfavor-submit-' . $notice->id,
1967 'name' => 'disfavor-submit-' . $notice->id,
1968 'class' => 'disfavor',
1969 'value' => 'Disfavor favorite',
1970 'title' => 'Remove this message from favorites'));
1971 common_element_end('form');
1974 function common_favor_form($notice) {
1975 common_element_start('form', array('id' => 'favor-' . $notice->id,
1978 'action' => common_local_url('favor')));
1980 common_element('input', array('type' => 'hidden',
1981 'name' => 'token-'. $notice->id,
1982 'id' => 'token-'. $notice->id,
1984 'value' => common_session_token()));
1986 common_element('input', array('type' => 'hidden',
1988 'id' => 'notice-n'. $notice->id,
1989 'class' => 'notice',
1990 'value' => $notice->id));
1992 common_element('input', array('type' => 'submit',
1993 'id' => 'favor-submit-' . $notice->id,
1994 'name' => 'favor-submit-' . $notice->id,
1996 'value' => 'Add to favorites',
1997 'title' => 'Add this message to favorites'));
1998 common_element_end('form');
2001 function common_nudge_form($profile) {
2002 common_element_start('form', array('id' => 'nudge', 'method' => 'post',
2003 'action' => common_local_url('nudge', array('nickname' => $profile->nickname))));
2004 common_hidden('token', common_session_token());
2005 common_element('input', array('type' => 'submit',
2006 'class' => 'submit',
2007 'value' => _('Send a nudge')));
2008 common_element_end('form');
2010 function common_nudge_response() {
2011 common_element('p', array('id' => 'nudge_response'), _('Nudge sent!'));
2014 function common_subscribe_form($profile) {
2015 common_element_start('form', array('id' => 'subscribe-' . $profile->nickname,
2017 'class' => 'subscribe',
2018 'action' => common_local_url('subscribe')));
2019 common_hidden('token', common_session_token());
2020 common_element('input', array('id' => 'subscribeto-' . $profile->nickname,
2021 'name' => 'subscribeto',
2023 'value' => $profile->nickname));
2024 common_element('input', array('type' => 'submit',
2025 'class' => 'submit',
2026 'value' => _('Subscribe')));
2027 common_element_end('form');
2030 function common_unsubscribe_form($profile) {
2031 common_element_start('form', array('id' => 'unsubscribe-' . $profile->nickname,
2033 'class' => 'unsubscribe',
2034 'action' => common_local_url('unsubscribe')));
2035 common_hidden('token', common_session_token());
2036 common_element('input', array('id' => 'unsubscribeto-' . $profile->nickname,
2037 'name' => 'unsubscribeto',
2039 'value' => $profile->nickname));
2040 common_element('input', array('type' => 'submit',
2041 'class' => 'submit',
2042 'value' => _('Unsubscribe')));
2043 common_element_end('form');
2046 // XXX: Refactor this code
2047 function common_profile_new_message_nudge ($cur, $profile) {
2048 $user = User::staticGet('id', $profile->id);
2050 if ($cur && $cur->id != $user->id && $cur->mutuallySubscribed($user)) {
2051 common_element_start('li', array('id' => 'profile_send_a_new_message'));
2052 common_element('a', array('href' => common_local_url('newmessage', array('to' => $user->id))),
2053 _('Send a message'));
2054 common_element_end('li');
2056 if ($user->email && $user->emailnotifynudge) {
2057 common_element_start('li', array('id' => 'profile_nudge'));
2058 common_nudge_form($user);
2059 common_element_end('li');
2064 function common_cache_key($extra) {
2065 return 'laconica:' . common_keyize(common_config('site', 'name')) . ':' . $extra;
2068 function common_keyize($str) {
2069 $str = strtolower($str);
2070 $str = preg_replace('/\s/', '_', $str);
2074 function common_message_form($content, $user, $to) {
2076 common_element_start('form', array('id' => 'message_form',
2078 'action' => common_local_url('newmessage')));
2080 $mutual_users = $user->mutuallySubscribedUsers();
2084 while ($mutual_users->fetch()) {
2085 if ($mutual_users->id != $user->id) {
2086 $mutual[$mutual_users->id] = $mutual_users->nickname;
2090 $mutual_users->free();
2091 unset($mutual_users);
2093 common_dropdown('to', _('To'), $mutual, NULL, FALSE, $to->id);
2095 common_element_start('p');
2097 common_element('textarea', array('id' => 'message_content',
2100 'name' => 'content'),
2101 ($content) ? $content : '');
2103 common_element('input', array('id' => 'message_send',
2104 'name' => 'message_send',
2106 'value' => _('Send')));
2108 common_hidden('token', common_session_token());
2110 common_element_end('p');
2111 common_element_end('form');
2114 function common_memcache() {
2115 static $cache = NULL;
2116 if (!common_config('memcached', 'enabled')) {
2120 $cache = new Memcache();
2121 $servers = common_config('memcached', 'server');
2122 if (is_array($servers)) {
2123 foreach($servers as $server) {
2124 $cache->addServer($server);
2127 $cache->addServer($servers);
2134 function common_compatible_license($from, $to) {
2135 # XXX: better compatibility check needed here!
2136 return ($from == $to);