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) {
119 $xw = new XMLWriter();
120 $xw->openURI('php://output');
121 $xw->setIndent(true);
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'.$ver.'.css').'?version='.LACONICA_VERSION.'" /><![endif]');
177 common_element('script', array('type' => 'text/javascript',
178 'src' => common_path('js/jquery.min.js')),
180 common_element('script', array('type' => 'text/javascript',
181 'src' => common_path('js/jquery.form.js')),
183 common_element('script', array('type' => 'text/javascript',
184 'src' => common_path('js/util.js?version='.LACONICA_VERSION)),
186 common_element('link', array('rel' => 'search', 'type' => 'application/opensearchdescription+xml',
187 'href' => common_local_url('opensearch', array('type' => 'people')),
188 'title' => common_config('site', 'name').' People Search'));
190 common_element('link', array('rel' => 'search', 'type' => 'application/opensearchdescription+xml',
191 'href' => common_local_url('opensearch', array('type' => 'notice')),
192 'title' => common_config('site', 'name').' Notice Search'));
196 call_user_func($callable, $data);
198 call_user_func($callable);
201 common_element_end('head');
202 common_element_start('body');
203 common_element_start('div', array('id' => 'wrap'));
204 common_element_start('div', array('id' => 'header'));
206 if ((isset($config['site']['logo']) && is_string($config['site']['logo']) && (strlen($config['site']['logo']) > 0))
207 || file_exists(theme_file('logo.png')))
209 common_element_start('a', array('href' => common_local_url('public')));
210 common_element('img', array('src' => isset($config['site']['logo']) ?
211 ($config['site']['logo']) : theme_path('logo.png'),
212 'alt' => $config['site']['name'],
214 common_element_end('a');
216 common_element_start('p', array('id' => 'branding'));
217 common_element('a', array('href' => common_local_url('public')),
218 $config['site']['name']);
219 common_element_end('p');
222 common_element('h1', 'pagetitle', $pagetitle);
226 call_user_func($headercall, $data);
228 call_user_func($headercall);
231 common_element_end('div');
232 common_element_start('div', array('id' => 'content'));
235 function common_start_html($type=NULL) {
238 $httpaccept = isset($_SERVER['HTTP_ACCEPT']) ? $_SERVER['HTTP_ACCEPT'] : NULL;
240 # XXX: allow content negotiation for RDF, RSS, or XRDS
242 $type = common_negotiate_type(common_accept_to_prefs($httpaccept),
243 common_accept_to_prefs(PAGE_TYPE_PREFS));
246 common_user_error(_('This page is not available in a media type you accept'), 406);
251 header('Content-Type: '.$type);
253 common_start_xml('html',
254 '-//W3C//DTD XHTML 1.0 Strict//EN',
255 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd');
257 # FIXME: correct language for interface
259 $language = common_language();
261 common_element_start('html', array('xmlns' => 'http://www.w3.org/1999/xhtml',
262 'xml:lang' => $language,
263 'lang' => $language));
266 function common_show_footer() {
268 common_element_end('div'); # content div
270 common_element_start('div', array('id' => 'footer'));
271 common_element_start('div', 'laconica');
272 if (common_config('site', 'broughtby')) {
273 $instr = _('**%%site.name%%** is a microblogging service brought to you by [%%site.broughtby%%](%%site.broughtbyurl%%). ');
275 $instr = _('**%%site.name%%** is a microblogging service. ');
277 $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);
278 $output = common_markup_to_html($instr);
280 common_element_end('div');
281 common_element('img', array('id' => 'cc',
282 'src' => $config['license']['image'],
283 'alt' => $config['license']['title']));
284 common_element_start('p');
285 common_text(_('Unless otherwise specified, contents of this site are copyright by the contributors and available under the '));
286 common_element('a', array('class' => 'license',
288 'href' => $config['license']['url']),
289 $config['license']['title']);
290 common_text(_('. Contributors should be attributed by full name or nickname.'));
291 common_element_end('p');
292 common_element_end('div');
293 common_element_end('div');
294 common_element_end('body');
295 common_element_end('html');
299 function common_text($txt) {
304 function common_raw($xml) {
309 function common_nav_menu() {
310 $user = common_current_user();
311 common_element_start('ul', array('id' => 'nav'));
313 common_menu_item(common_local_url('all', array('nickname' => $user->nickname)),
316 common_menu_item(common_local_url('peoplesearch'), _('Search'));
317 common_menu_item(common_local_url('tags'), _('Tags'));
319 common_menu_item(common_local_url('profilesettings'),
321 common_menu_item(common_local_url('invite'),
323 common_menu_item(common_local_url('logout'),
326 common_menu_item(common_local_url('login'), _('Login'));
327 if (!common_config('site', 'closed')) {
328 common_menu_item(common_local_url('register'), _('Register'));
330 common_menu_item(common_local_url('openidlogin'), _('OpenID'));
332 common_element_end('ul');
335 function common_foot_menu() {
336 common_element_start('ul', array('id' => 'nav_sub'));
337 common_menu_item(common_local_url('doc', array('title' => 'help')),
339 common_menu_item(common_local_url('doc', array('title' => 'about')),
341 common_menu_item(common_local_url('doc', array('title' => 'faq')),
343 common_menu_item(common_local_url('doc', array('title' => 'privacy')),
345 common_menu_item(common_local_url('doc', array('title' => 'source')),
347 common_menu_item(common_local_url('doc', array('title' => 'contact')),
349 common_element_end('ul');
352 function common_menu_item($url, $text, $title=NULL, $is_selected=false) {
355 $lattrs['class'] = 'current';
357 common_element_start('li', $lattrs);
358 $attrs['href'] = $url;
360 $attrs['title'] = $title;
362 common_element('a', $attrs, $text);
363 common_element_end('li');
366 function common_input($id, $label, $value=NULL,$instructions=NULL) {
367 common_element_start('p');
368 common_element('label', array('for' => $id), $label);
369 $attrs = array('name' => $id,
371 'class' => 'input_text',
374 $attrs['value'] = htmlspecialchars($value);
376 common_element('input', $attrs);
378 common_element('span', 'input_instructions', $instructions);
380 common_element_end('p');
383 function common_checkbox($id, $label, $checked=false, $instructions=NULL, $value='true', $disabled=false)
385 common_element_start('p');
386 $attrs = array('name' => $id,
387 'type' => 'checkbox',
388 'class' => 'checkbox',
391 $attrs['value'] = htmlspecialchars($value);
394 $attrs['checked'] = 'checked';
397 $attrs['disabled'] = 'true';
399 common_element('input', $attrs);
402 common_element('span', 'checkbox_label', $label);
405 common_element('span', 'input_instructions', $instructions);
407 common_element_end('p');
410 function common_dropdown($id, $label, $content, $instructions=NULL, $blank_select=FALSE, $selected=NULL) {
411 common_element_start('p');
412 common_element('label', array('for' => $id), $label);
413 common_element_start('select', array('id' => $id, 'name' => $id));
415 common_element('option', array('value' => ''));
417 foreach ($content as $value => $option) {
418 if ($value == $selected) {
419 common_element('option', array('value' => $value, 'selected' => $value), $option);
421 common_element('option', array('value' => $value), $option);
424 common_element_end('select');
426 common_element('span', 'input_instructions', $instructions);
428 common_element_end('p');
430 function common_hidden($id, $value) {
431 common_element('input', array('name' => $id,
437 function common_password($id, $label, $instructions=NULL) {
438 common_element_start('p');
439 common_element('label', array('for' => $id), $label);
440 $attrs = array('name' => $id,
441 'type' => 'password',
442 'class' => 'password',
444 common_element('input', $attrs);
446 common_element('span', 'input_instructions', $instructions);
448 common_element_end('p');
451 function common_submit($id, $label, $cls='submit') {
453 common_element_start('p');
454 common_element('input', array('type' => 'submit',
459 common_element_end('p');
462 function common_textarea($id, $label, $content=NULL, $instructions=NULL) {
463 common_element_start('p');
464 common_element('label', array('for' => $id), $label);
465 common_element('textarea', array('rows' => 3,
469 ($content) ? $content : '');
471 common_element('span', 'input_instructions', $instructions);
473 common_element_end('p');
476 function common_timezone() {
477 if (common_logged_in()) {
478 $user = common_current_user();
479 if ($user->timezone) {
480 return $user->timezone;
485 return $config['site']['timezone'];
488 function common_language() {
490 // If there is a user logged in and they've set a language preference
491 // then return that one...
492 if (common_logged_in()) {
493 $user = common_current_user();
494 $user_language = $user->language;
496 return $user_language;
499 // Otherwise, find the best match for the languages requested by the
501 $httplang = isset($_SERVER['HTTP_ACCEPT_LANGUAGE']) ? $_SERVER['HTTP_ACCEPT_LANGUAGE'] : NULL;
502 if (!empty($httplang)) {
503 $language = client_prefered_language($httplang);
508 // Finally, if none of the above worked, use the site's default...
509 return common_config('site', 'language');
511 # salted, hashed passwords are stored in the DB
513 function common_munge_password($password, $id) {
514 return md5($password . $id);
517 # check if a username exists and has matching password
518 function common_check_user($nickname, $password) {
519 # NEVER allow blank passwords, even if they match the DB
520 if (mb_strlen($password) == 0) {
523 $user = User::staticGet('nickname', $nickname);
524 if (is_null($user)) {
527 if (0 == strcmp(common_munge_password($password, $user->id),
536 # is the current user logged in?
537 function common_logged_in() {
538 return (!is_null(common_current_user()));
541 function common_have_session() {
542 return (0 != strcmp(session_id(), ''));
545 function common_ensure_session() {
546 if (!common_have_session()) {
551 # Three kinds of arguments:
556 function common_set_user($user) {
557 if (is_null($user) && common_have_session()) {
558 unset($_SESSION['userid']);
560 } else if (is_string($user)) {
562 $user = User::staticGet('nickname', $nickname);
563 } else if (!($user instanceof User)) {
568 common_ensure_session();
569 $_SESSION['userid'] = $user->id;
575 function common_set_cookie($key, $value, $expiration=0) {
576 $path = common_config('site', 'path');
577 $server = common_config('site', 'server');
579 if ($path && ($path != '/')) {
580 $cookiepath = '/' . $path . '/';
584 return setcookie($key,
591 define('REMEMBERME', 'rememberme');
592 define('REMEMBERME_EXPIRY', 30 * 24 * 60 * 60);
594 function common_rememberme($user=NULL) {
596 $user = common_current_user();
598 common_debug('No current user to remember', __FILE__);
602 $rm = new Remember_me();
603 $rm->code = common_good_rand(16);
604 $rm->user_id = $user->id;
605 $result = $rm->insert();
607 common_log_db_error($rm, 'INSERT', __FILE__);
608 common_debug('Error adding rememberme record for ' . $user->nickname, __FILE__);
611 common_log(LOG_INFO, 'adding rememberme cookie for ' . $user->nickname);
612 common_set_cookie(REMEMBERME,
613 implode(':', array($rm->user_id, $rm->code)),
614 time() + REMEMBERME_EXPIRY);
618 function common_remembered_user() {
621 $packed = isset($_COOKIE[REMEMBERME]) ? $_COOKIE[REMEMBERME] : '';
623 list($id, $code) = explode(':', $packed);
625 $rm = Remember_me::staticGet($code);
626 if ($rm && ($rm->user_id == $id)) {
627 $user = User::staticGet($rm->user_id);
630 $result = $rm->delete();
632 common_log_db_error($rm, 'DELETE', __FILE__);
635 common_log(LOG_INFO, 'logging in ' . $user->nickname . ' using rememberme code ' . $rm->code);
636 common_set_user($user->nickname);
637 common_real_login(false);
638 # We issue a new cookie, so they can log in
639 # automatically again after this session
640 common_rememberme($user);
649 # must be called with a valid user!
651 function common_forgetme() {
652 common_set_cookie(REMEMBERME, '', 0);
655 # who is the current user?
656 function common_current_user() {
657 if (isset($_REQUEST[session_name()]) || (isset($_SESSION['userid']) && $_SESSION['userid'])) {
658 common_ensure_session();
659 $id = isset($_SESSION['userid']) ? $_SESSION['userid'] : false;
661 # note: this should cache
662 $user = User::staticGet($id);
666 # that didn't work; try to remember
667 $user = common_remembered_user();
669 common_debug("Got User " . $user->nickname);
670 common_debug("Faking session on remembered user");
671 $_SESSION['userid'] = $user->id;
676 # Logins that are 'remembered' aren't 'real' -- they're subject to
677 # cookie-stealing. So, we don't let them do certain things. New reg,
678 # OpenID, and password logins _are_ real.
680 function common_real_login($real=true) {
681 common_ensure_session();
682 $_SESSION['real_login'] = $real;
685 function common_is_real_login() {
686 return common_logged_in() && $_SESSION['real_login'];
689 # get canonical version of nickname for comparison
690 function common_canonical_nickname($nickname) {
691 # XXX: UTF-8 canonicalization (like combining chars)
692 return strtolower($nickname);
695 # get canonical version of email for comparison
696 function common_canonical_email($email) {
697 # XXX: canonicalize UTF-8
698 # XXX: lcase the domain part
702 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$_+!*();/?:~-]))');
704 function common_render_content($text, $notice) {
705 $r = common_render_text($text);
706 $id = $notice->profile_id;
707 $r = preg_replace('/(^|\s+)@([A-Za-z0-9]{1,64})/e', "'\\1@'.common_at_link($id, '\\2')", $r);
708 $r = preg_replace('/^T ([A-Z0-9]{1,64}) /e', "'T '.common_at_link($id, '\\1').' '", $r);
712 function common_render_text($text) {
713 $r = htmlspecialchars($text);
715 $r = preg_replace('/[\x{0}-\x{8}\x{b}-\x{c}\x{e}-\x{19}]/', '', $r);
716 $r = preg_replace_callback('@https?://[^\]>\s]+@', 'common_render_uri_thingy', $r);
717 $r = preg_replace('/(^|\s+)#([A-Za-z0-9_\-\.]{1,64})/e', "'\\1#'.common_tag_link('\\2')", $r);
722 function common_render_uri_thingy($matches) {
726 # Some heuristics for extracting URIs from surrounding punctuation
727 # Strip from trailing text...
728 if (preg_match('/^(.*)([,.:"\']+)$/', $uri, $matches)) {
730 $trailer = $matches[2];
734 ']' => '[', # technically disallowed in URIs, but used in Java docs
735 ')' => '(', # far too frequent in Wikipedia and MSDN
737 $final = substr($uri, -1, 1);
738 if (isset($pairs[$final])) {
739 $openers = substr_count($uri, $pairs[$final]);
740 $closers = substr_count($uri, $final);
741 if ($closers > $openers) {
742 // Assume the paren was opened outside the URI
743 $uri = substr($uri, 0, -1);
744 $trailer = $final . $trailer;
747 if ($longurl = common_longurl($uri)) {
748 $longurl = htmlentities($longurl, ENT_QUOTES, 'UTF-8');
749 $title = " title=$longurl";
753 return '<a href="' . $uri . '"' . $title . ' class="extlink">' . $uri . '</a>' . $trailer;
756 function common_longurl($uri) {
757 $uri_e = urlencode($uri);
758 $longurl = unserialize(file_get_contents("http://api.longurl.org/v1/expand?format=php&url=$uri_e"));
759 if (empty($longurl['long_url']) || $uri === $longurl['long_url']) return false;
760 return $longurl['long_url'];
763 function common_shorten_links($text) {
764 $r = htmlspecialchars($text);
765 // \s = not a horizontal whitespace character (since PHP 5.2.4)
766 // RYM this should prevent * preceded URLs from being processed but it its a char
767 // $r = preg_replace('@[^*](https?://[^)\]>\s]+)@e', "common_shorten_link('\\1')", $r);
768 $r = preg_replace('@https?://[^)\]>\s]+@e', "common_shorten_link('\\0')", $r);
772 function common_shorten_link($long_url) {
774 $user = common_current_user();
776 $curlh = curl_init();
777 curl_setopt($curlh, CURLOPT_CONNECTTIMEOUT, 20); // # seconds to wait
778 curl_setopt($curlh, CURLOPT_USERAGENT, 'Laconica');
779 curl_setopt($curlh, CURLOPT_RETURNTRANSFER, true);
781 switch($user->urlshorteningservice) {
783 $short_url_service = new LilUrl;
784 $short_url = $short_url_service->shorten($long_url);
788 $short_url_service = new TightUrl;
789 $short_url = $short_url_service->shorten($long_url);
793 $short_url_service = new PtitUrl;
794 $short_url = $short_url_service->shorten($long_url);
798 curl_setopt($curlh, CURLOPT_URL, 'http://bit.ly/api?method=shorten&long_url='.urlencode($long_url));
799 $short_url = current(json_decode(curl_exec($curlh))->results)->hashUrl;
803 curl_setopt($curlh, CURLOPT_URL, 'http://is.gd/api.php?longurl='.urlencode($long_url));
804 $short_url = curl_exec($curlh);
807 curl_setopt($curlh, CURLOPT_URL, 'http://snipr.com/site/snip?r=simple&link='.urlencode($long_url));
808 $short_url = curl_exec($curlh);
811 curl_setopt($curlh, CURLOPT_URL, 'http://metamark.net/api/rest/simple?long_url='.urlencode($long_url));
812 $short_url = curl_exec($curlh);
815 curl_setopt($curlh, CURLOPT_URL, 'http://tinyurl.com/api-create.php?url='.urlencode($long_url));
816 $short_url = curl_exec($curlh);
830 function common_xml_safe_str($str) {
831 $xmlStr = htmlentities(iconv('UTF-8', 'UTF-8//IGNORE', $str), ENT_NOQUOTES, 'UTF-8');
833 // Replace control, formatting, and surrogate characters with '*', ala Twitter
834 return preg_replace('/[\p{Cc}\p{Cf}\p{Cs}]/u', '*', $str);
837 function common_tag_link($tag) {
838 $canonical = common_canonical_tag($tag);
839 $url = common_local_url('tag', array('tag' => $canonical));
840 return '<a href="' . htmlspecialchars($url) . '" rel="tag" class="hashlink">' . htmlspecialchars($tag) . '</a>';
843 function common_canonical_tag($tag) {
844 return strtolower(str_replace(array('-', '_', '.'), '', $tag));
847 function common_at_link($sender_id, $nickname) {
848 $sender = Profile::staticGet($sender_id);
849 $recipient = common_relative_profile($sender, common_canonical_nickname($nickname));
851 return '<a href="'.htmlspecialchars($recipient->profileurl).'" class="atlink">'.$nickname.'</a>';
857 function common_relative_profile($sender, $nickname, $dt=NULL) {
858 # Try to find profiles this profile is subscribed to that have this nickname
859 $recipient = new Profile();
860 # XXX: use a join instead of a subquery
861 $recipient->whereAdd('EXISTS (SELECT subscribed from subscription where subscriber = '.$sender->id.' and subscribed = id)', 'AND');
862 $recipient->whereAdd('nickname = "' . trim($nickname) . '"', 'AND');
863 if ($recipient->find(TRUE)) {
864 # XXX: should probably differentiate between profiles with
865 # the same name by date of most recent update
868 # Try to find profiles that listen to this profile and that have this nickname
869 $recipient = new Profile();
870 # XXX: use a join instead of a subquery
871 $recipient->whereAdd('EXISTS (SELECT subscriber from subscription where subscribed = '.$sender->id.' and subscriber = id)', 'AND');
872 $recipient->whereAdd('nickname = "' . trim($nickname) . '"', 'AND');
873 if ($recipient->find(TRUE)) {
874 # XXX: should probably differentiate between profiles with
875 # the same name by date of most recent update
878 # If this is a local user, try to find a local user with that nickname.
879 $sender = User::staticGet($sender->id);
881 $recipient_user = User::staticGet('nickname', $nickname);
882 if ($recipient_user) {
883 return $recipient_user->getProfile();
886 # Otherwise, no links. @messages from local users to remote users,
887 # or from remote users to other remote users, are just
888 # outside our ability to make intelligent guesses about
892 // where should the avatar go for this user?
894 function common_avatar_filename($id, $extension, $size=NULL, $extra=NULL) {
898 return $id . '-' . $size . (($extra) ? ('-' . $extra) : '') . $extension;
900 return $id . '-original' . (($extra) ? ('-' . $extra) : '') . $extension;
904 function common_avatar_path($filename) {
906 return INSTALLDIR . '/avatar/' . $filename;
909 function common_avatar_url($filename) {
910 return common_path('avatar/'.$filename);
913 function common_avatar_display_url($avatar) {
914 $server = common_config('avatar', 'server');
916 return 'http://'.$server.'/'.$avatar->filename;
922 function common_default_avatar($size) {
923 static $sizenames = array(AVATAR_PROFILE_SIZE => 'profile',
924 AVATAR_STREAM_SIZE => 'stream',
925 AVATAR_MINI_SIZE => 'mini');
926 return theme_path('default-avatar-'.$sizenames[$size].'.png');
929 function common_local_url($action, $args=NULL, $fragment=NULL) {
931 if (common_config('site','fancy')) {
932 $url = common_fancy_url($action, $args);
934 $url = common_simple_url($action, $args);
936 if (!is_null($fragment)) {
937 $url .= '#'.$fragment;
942 function common_fancy_url($action, $args=NULL) {
943 switch (strtolower($action)) {
945 if ($args && isset($args['page'])) {
946 return common_path('?page=' . $args['page']);
948 return common_path('');
951 return common_path('rss');
953 return common_path('xrds');
955 if ($args && $args['type']) {
956 return common_path('opensearch/'.$args['type']);
958 return common_path('opensearch/people');
961 return common_path('doc/'.$args['title']);
967 return common_path('main/'.$action);
969 if ($args && $args['code']) {
970 return common_path('main/register/'.$args['code']);
972 return common_path('main/register');
974 case 'remotesubscribe':
975 if ($args && $args['nickname']) {
976 return common_path('main/remote?nickname=' . $args['nickname']);
978 return common_path('main/remote');
981 return common_path('main/openid');
982 case 'profilesettings':
983 return common_path('settings/profile');
984 case 'emailsettings':
985 return common_path('settings/email');
986 case 'openidsettings':
987 return common_path('settings/openid');
989 return common_path('settings/sms');
990 case 'twittersettings':
991 return common_path('settings/twitter');
992 case 'othersettings':
993 return common_path('settings/other');
995 if ($args && $args['replyto']) {
996 return common_path('notice/new?replyto='.$args['replyto']);
998 return common_path('notice/new');
1001 return common_path('notice/'.$args['notice']);
1002 case 'deletenotice':
1003 if ($args && $args['notice']) {
1004 return common_path('notice/delete/'.$args['notice']);
1006 return common_path('notice/delete');
1010 return common_path($args['nickname'].'/'.$action);
1011 case 'subscriptions':
1017 if ($args && isset($args['page'])) {
1018 return common_path($args['nickname'].'/'.$action.'?page=' . $args['page']);
1020 return common_path($args['nickname'].'/'.$action);
1023 return common_path($args['nickname'].'/all/rss');
1025 return common_path($args['nickname'].'/replies/rss');
1027 return common_path($args['nickname'].'/rss');
1029 if ($args && isset($args['page'])) {
1030 return common_path($args['nickname'].'?page=' . $args['page']);
1032 return common_path($args['nickname']);
1034 case 'confirmaddress':
1035 return common_path('main/confirmaddress/'.$args['code']);
1037 return common_path('user/'.$args['id']);
1038 case 'recoverpassword':
1039 $path = 'main/recoverpassword';
1040 if ($args['code']) {
1041 $path .= '/' . $args['code'];
1043 return common_path($path);
1045 return common_path('settings/im');
1046 case 'peoplesearch':
1047 return common_path('search/people' . (($args) ? ('?' . http_build_query($args)) : ''));
1048 case 'noticesearch':
1049 return common_path('search/notice' . (($args) ? ('?' . http_build_query($args)) : ''));
1050 case 'noticesearchrss':
1051 return common_path('search/notice/rss' . (($args) ? ('?' . http_build_query($args)) : ''));
1052 case 'avatarbynickname':
1053 return common_path($args['nickname'].'/avatar/'.$args['size']);
1055 if (isset($args['tag']) && $args['tag']) {
1056 $path = 'tag/' . $args['tag'];
1057 unset($args['tag']);
1061 return common_path($path . (($args) ? ('?' . http_build_query($args)) : ''));
1063 return common_path('tags' . (($args) ? ('?' . http_build_query($args)) : ''));
1065 return common_path('main/favor');
1067 return common_path('main/disfavor');
1068 case 'showfavorites':
1069 if ($args && isset($args['page'])) {
1070 return common_path($args['nickname'].'/favorites?page=' . $args['page']);
1072 return common_path($args['nickname'].'/favorites');
1074 case 'favoritesrss':
1075 return common_path($args['nickname'].'/favorites/rss');
1077 return common_path('message/' . $args['message']);
1079 return common_path('message/new' . (($args) ? ('?' . http_build_query($args)) : ''));
1081 # XXX: do fancy URLs for all the API methods
1082 switch (strtolower($args['apiaction'])) {
1084 switch (strtolower($args['method'])) {
1085 case 'user_timeline.rss':
1086 return common_path('api/statuses/user_timeline/'.$args['argument'].'.rss');
1087 case 'user_timeline.atom':
1088 return common_path('api/statuses/user_timeline/'.$args['argument'].'.rss');
1089 case 'user_timeline.rss':
1090 return common_path('api/statuses/user_timeline/'.$args['argument'].'.rss');
1091 case 'user_timeline.atom':
1092 return common_path('api/statuses/user_timeline/'.$args['argument'].'.rss');
1093 default: return common_simple_url($action, $args);
1095 default: return common_simple_url($action, $args);
1098 if ($args && isset($args['seconds'])) {
1099 return common_path('main/sup?seconds='.$args['seconds']);
1101 return common_path('main/sup');
1104 return common_simple_url($action, $args);
1108 function common_simple_url($action, $args=NULL) {
1110 /* XXX: pretty URLs */
1113 foreach ($args as $key => $value) {
1114 $extra .= "&${key}=${value}";
1117 return common_path("index.php?action=${action}${extra}");
1120 function common_path($relative) {
1122 $pathpart = ($config['site']['path']) ? $config['site']['path']."/" : '';
1123 return "http://".$config['site']['server'].'/'.$pathpart.$relative;
1126 function common_date_string($dt) {
1127 // XXX: do some sexy date formatting
1128 // return date(DATE_RFC822, $dt);
1129 $t = strtotime($dt);
1133 if ($now < $t) { # that shouldn't happen!
1134 return common_exact_date($dt);
1135 } else if ($diff < 60) {
1136 return _('a few seconds ago');
1137 } else if ($diff < 92) {
1138 return _('about a minute ago');
1139 } else if ($diff < 3300) {
1140 return sprintf(_('about %d minutes ago'), round($diff/60));
1141 } else if ($diff < 5400) {
1142 return _('about an hour ago');
1143 } else if ($diff < 22 * 3600) {
1144 return sprintf(_('about %d hours ago'), round($diff/3600));
1145 } else if ($diff < 37 * 3600) {
1146 return _('about a day ago');
1147 } else if ($diff < 24 * 24 * 3600) {
1148 return sprintf(_('about %d days ago'), round($diff/(24*3600)));
1149 } else if ($diff < 46 * 24 * 3600) {
1150 return _('about a month ago');
1151 } else if ($diff < 330 * 24 * 3600) {
1152 return sprintf(_('about %d months ago'), round($diff/(30*24*3600)));
1153 } else if ($diff < 480 * 24 * 3600) {
1154 return _('about a year ago');
1156 return common_exact_date($dt);
1160 function common_exact_date($dt) {
1165 $_utc = new DateTimeZone('UTC');
1166 $_siteTz = new DateTimeZone(common_timezone());
1169 $dateStr = date('d F Y H:i:s', strtotime($dt));
1170 $d = new DateTime($dateStr, $_utc);
1171 $d->setTimezone($_siteTz);
1172 return $d->format(DATE_RFC850);
1175 function common_date_w3dtf($dt) {
1176 $dateStr = date('d F Y H:i:s', strtotime($dt));
1177 $d = new DateTime($dateStr, new DateTimeZone('UTC'));
1178 $d->setTimezone(new DateTimeZone(common_timezone()));
1179 return $d->format(DATE_W3C);
1182 function common_date_rfc2822($dt) {
1183 $dateStr = date('d F Y H:i:s', strtotime($dt));
1184 $d = new DateTime($dateStr, new DateTimeZone('UTC'));
1185 $d->setTimezone(new DateTimeZone(common_timezone()));
1186 return $d->format('r');
1189 function common_date_iso8601($dt) {
1190 $dateStr = date('d F Y H:i:s', strtotime($dt));
1191 $d = new DateTime($dateStr, new DateTimeZone('UTC'));
1192 $d->setTimezone(new DateTimeZone(common_timezone()));
1193 return $d->format('c');
1196 function common_sql_now() {
1197 return strftime('%Y-%m-%d %H:%M:%S', time());
1200 function common_redirect($url, $code=307) {
1201 static $status = array(301 => "Moved Permanently",
1204 307 => "Temporary Redirect");
1205 header("Status: ${code} $status[$code]");
1206 header("Location: $url");
1208 common_start_xml('a',
1209 '-//W3C//DTD XHTML 1.0 Strict//EN',
1210 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd');
1211 common_element('a', array('href' => $url), $url);
1216 function common_save_replies($notice) {
1217 # Alternative reply format
1219 if (preg_match('/^T ([A-Z0-9]{1,64}) /', $notice->content, $match)) {
1222 # extract all @messages
1223 $cnt = preg_match_all('/(?:^|\s)@([a-z0-9]{1,64})/', $notice->content, $match);
1224 if (!$cnt && !$tname) {
1227 # XXX: is there another way to make an array copy?
1228 $names = ($tname) ? array_unique(array_merge(array(strtolower($tname)), $match[1])) : array_unique($match[1]);
1229 $sender = Profile::staticGet($notice->profile_id);
1230 # store replied only for first @ (what user/notice what the reply directed,
1231 # we assume first @ is it)
1232 for ($i=0; $i<count($names); $i++) {
1233 $nickname = $names[$i];
1234 $recipient = common_relative_profile($sender, $nickname, $notice->created);
1238 if ($i == 0 && ($recipient->id != $sender->id) && !$notice->reply_to) { # Don't save reply to self
1239 $reply_for = $recipient;
1240 $recipient_notice = $reply_for->getCurrentNotice();
1241 if ($recipient_notice) {
1242 $orig = clone($notice);
1243 $notice->reply_to = $recipient_notice->id;
1244 $notice->update($orig);
1247 $reply = new Reply();
1248 $reply->notice_id = $notice->id;
1249 $reply->profile_id = $recipient->id;
1250 $id = $reply->insert();
1252 $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
1253 common_log(LOG_ERR, 'DB error inserting reply: ' . $last_error->message);
1254 common_server_error(sprintf(_('DB error inserting reply: %s'), $last_error->message));
1260 function common_broadcast_notice($notice, $remote=false) {
1262 // Check to see if notice should go to Twitter
1263 $flink = Foreign_link::getForeignLink($notice->profile_id, 1); // 1 == Twitter
1264 if (($flink->noticesync & FOREIGN_NOTICE_SEND) == FOREIGN_NOTICE_SEND) {
1266 // If it's not a Twitter-style reply, or if the user WANTS to send replies...
1268 if (!preg_match('/^@[a-zA-Z0-9_]{1,15}\b/u', $notice->content) ||
1269 (($flink->noticesync & FOREIGN_NOTICE_SEND_REPLY) == FOREIGN_NOTICE_SEND_REPLY)) {
1271 $result = common_twitter_broadcast($notice, $flink);
1274 common_debug('Unable to send notice: ' . $notice->id . ' to Twitter.', __FILE__);
1279 if (common_config('queue', 'enabled')) {
1281 return common_enqueue_notice($notice);
1283 return common_real_broadcast($notice, $remote);
1287 function common_twitter_broadcast($notice, $flink) {
1290 $fuser = $flink->getForeignUser();
1291 $twitter_user = $fuser->nickname;
1292 $twitter_password = $flink->credentials;
1293 $uri = 'http://www.twitter.com/statuses/update.json';
1295 // XXX: Hack to get around PHP cURL's use of @ being a a meta character
1296 $statustxt = preg_replace('/^@/', ' @', $notice->content);
1299 CURLOPT_USERPWD => "$twitter_user:$twitter_password",
1300 CURLOPT_POST => true,
1301 CURLOPT_POSTFIELDS => array(
1302 'status' => $statustxt,
1303 'source' => $config['integration']['source']
1305 CURLOPT_RETURNTRANSFER => true,
1306 CURLOPT_FAILONERROR => true,
1307 CURLOPT_HEADER => false,
1308 CURLOPT_FOLLOWLOCATION => true,
1309 CURLOPT_USERAGENT => "Laconica",
1310 CURLOPT_CONNECTTIMEOUT => 120, // XXX: Scary!!!! How long should this be?
1311 CURLOPT_TIMEOUT => 120
1314 $ch = curl_init($uri);
1315 curl_setopt_array($ch, $options);
1316 $data = curl_exec($ch);
1317 $errmsg = curl_error($ch);
1320 common_debug("cURL error: $errmsg - trying to send notice for $twitter_user.",
1328 common_debug("No data returned by Twitter's API trying to send update for $twitter_user",
1333 // Twitter should return a status
1334 $status = json_decode($data);
1337 common_debug("Unexpected data returned by Twitter API trying to send update for $twitter_user",
1345 # Stick the notice on the queue
1347 function common_enqueue_notice($notice) {
1348 foreach (array('jabber', 'omb', 'sms', 'public') as $transport) {
1349 $qi = new Queue_item();
1350 $qi->notice_id = $notice->id;
1351 $qi->transport = $transport;
1352 $qi->created = $notice->created;
1353 $result = $qi->insert();
1355 $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
1356 common_log(LOG_ERR, 'DB error inserting queue item: ' . $last_error->message);
1359 common_log(LOG_DEBUG, 'complete queueing notice ID = ' . $notice->id . ' for ' . $transport);
1364 function common_dequeue_notice($notice) {
1365 $qi = Queue_item::staticGet($notice->id);
1367 $result = $qi->delete();
1369 $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
1370 common_log(LOG_ERR, 'DB error deleting queue item: ' . $last_error->message);
1373 common_log(LOG_DEBUG, 'complete dequeueing notice ID = ' . $notice->id);
1380 function common_real_broadcast($notice, $remote=false) {
1383 # Make sure we have the OMB stuff
1384 require_once(INSTALLDIR.'/lib/omb.php');
1385 $success = omb_broadcast_remote_subscribers($notice);
1387 common_log(LOG_ERR, 'Error in OMB broadcast for notice ' . $notice->id);
1391 require_once(INSTALLDIR.'/lib/jabber.php');
1392 $success = jabber_broadcast_notice($notice);
1394 common_log(LOG_ERR, 'Error in jabber broadcast for notice ' . $notice->id);
1398 require_once(INSTALLDIR.'/lib/mail.php');
1399 $success = mail_broadcast_notice_sms($notice);
1401 common_log(LOG_ERR, 'Error in sms broadcast for notice ' . $notice->id);
1405 $success = jabber_public_notice($notice);
1407 common_log(LOG_ERR, 'Error in public broadcast for notice ' . $notice->id);
1410 // XXX: broadcast notices to other IM
1414 function common_broadcast_profile($profile) {
1415 // XXX: optionally use a queue system like http://code.google.com/p/microapps/wiki/NQDQ
1416 require_once(INSTALLDIR.'/lib/omb.php');
1417 omb_broadcast_profile($profile);
1418 // XXX: Other broadcasts...?
1422 function common_profile_url($nickname) {
1423 return common_local_url('showstream', array('nickname' => $nickname));
1426 # Don't call if nobody's logged in
1428 function common_notice_form($action=NULL, $content=NULL) {
1429 $user = common_current_user();
1430 assert(!is_null($user));
1431 common_element_start('form', array('id' => 'status_form',
1433 'action' => common_local_url('newnotice')));
1434 common_element_start('p');
1435 common_element('label', array('for' => 'status_textarea',
1436 'id' => 'status_label'),
1437 sprintf(_('What\'s up, %s?'), $user->nickname));
1438 common_element('span', array('id' => 'counter', 'class' => 'counter'), '140');
1439 common_element('textarea', array('id' => 'status_textarea',
1442 'name' => 'status_textarea'),
1443 ($content) ? $content : '');
1444 common_hidden('token', common_session_token());
1446 common_hidden('returnto', $action);
1449 common_hidden('inreplyto', 'false');
1450 common_element('input', array('id' => 'status_submit',
1451 'name' => 'status_submit',
1453 'value' => _('Send')));
1454 common_element_end('p');
1455 common_element_end('form');
1458 # Should make up a reasonable root URL
1460 function common_root_url() {
1461 return common_path('');
1464 # returns $bytes bytes of random data as a hexadecimal string
1465 # "good" here is a goal and not a guarantee
1467 function common_good_rand($bytes) {
1468 # XXX: use random.org...?
1469 if (file_exists('/dev/urandom')) {
1470 return common_urandom($bytes);
1471 } else { # FIXME: this is probably not good enough
1472 return common_mtrand($bytes);
1476 function common_urandom($bytes) {
1477 $h = fopen('/dev/urandom', 'rb');
1479 $src = fread($h, $bytes);
1482 for ($i = 0; $i < $bytes; $i++) {
1483 $enc .= sprintf("%02x", (ord($src[$i])));
1488 function common_mtrand($bytes) {
1490 for ($i = 0; $i < $bytes; $i++) {
1491 $enc .= sprintf("%02x", mt_rand(0, 255));
1496 function common_set_returnto($url) {
1497 common_ensure_session();
1498 $_SESSION['returnto'] = $url;
1501 function common_get_returnto() {
1502 common_ensure_session();
1503 return $_SESSION['returnto'];
1506 function common_timestamp() {
1507 return date('YmdHis');
1510 function common_ensure_syslog() {
1511 static $initialized = false;
1512 if (!$initialized) {
1514 openlog($config['syslog']['appname'], 0, LOG_USER);
1515 $initialized = true;
1519 function common_log($priority, $msg, $filename=NULL) {
1520 $logfile = common_config('site', 'logfile');
1522 $log = fopen($logfile, "a");
1524 static $syslog_priorities = array('LOG_EMERG', 'LOG_ALERT', 'LOG_CRIT', 'LOG_ERR',
1525 'LOG_WARNING', 'LOG_NOTICE', 'LOG_INFO', 'LOG_DEBUG');
1526 $output = date('Y-m-d H:i:s') . ' ' . $syslog_priorities[$priority] . ': ' . $msg . "\n";
1527 fwrite($log, $output);
1531 common_ensure_syslog();
1532 syslog($priority, $msg);
1536 function common_debug($msg, $filename=NULL) {
1538 common_log(LOG_DEBUG, basename($filename).' - '.$msg);
1540 common_log(LOG_DEBUG, $msg);
1544 function common_log_db_error(&$object, $verb, $filename=NULL) {
1545 $objstr = common_log_objstring($object);
1546 $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
1547 common_log(LOG_ERR, $last_error->message . '(' . $verb . ' on ' . $objstr . ')', $filename);
1550 function common_log_objstring(&$object) {
1551 if (is_null($object)) {
1554 $arr = $object->toArray();
1556 foreach ($arr as $k => $v) {
1557 $fields[] = "$k='$v'";
1559 $objstring = $object->tableName() . '[' . implode(',', $fields) . ']';
1563 function common_valid_http_url($url) {
1564 return Validate::uri($url, array('allowed_schemes' => array('http', 'https')));
1567 function common_valid_tag($tag) {
1568 if (preg_match('/^tag:(.*?),(\d{4}(-\d{2}(-\d{2})?)?):(.*)$/', $tag, $matches)) {
1569 return (Validate::email($matches[1]) ||
1570 preg_match('/^([\w-\.]+)$/', $matches[1]));
1575 # Does a little before-after block for next/prev page
1577 function common_pagination($have_before, $have_after, $page, $action, $args=NULL) {
1579 if ($have_before || $have_after) {
1580 common_element_start('div', array('id' => 'pagination'));
1581 common_element_start('ul', array('id' => 'nav_pagination'));
1585 $pargs = array('page' => $page-1);
1586 $newargs = ($args) ? array_merge($args,$pargs) : $pargs;
1588 common_element_start('li', 'before');
1589 common_element('a', array('href' => common_local_url($action, $newargs)),
1591 common_element_end('li');
1595 $pargs = array('page' => $page+1);
1596 $newargs = ($args) ? array_merge($args,$pargs) : $pargs;
1597 common_element_start('li', 'after');
1598 common_element('a', array('href' => common_local_url($action, $newargs)),
1600 common_element_end('li');
1603 if ($have_before || $have_after) {
1604 common_element_end('ul');
1605 common_element_end('div');
1609 /* Following functions are copied from MediaWiki GlobalFunctions.php
1610 * and written by Evan Prodromou. */
1612 function common_accept_to_prefs($accept, $def = '*/*') {
1613 # No arg means accept anything (per HTTP spec)
1615 return array($def => 1);
1620 $parts = explode(',', $accept);
1622 foreach($parts as $part) {
1623 # FIXME: doesn't deal with params like 'text/html; level=1'
1624 @list($value, $qpart) = explode(';', $part);
1626 if(!isset($qpart)) {
1628 } elseif(preg_match('/q\s*=\s*(\d*\.\d+)/', $qpart, $match)) {
1629 $prefs[$value] = $match[1];
1636 function common_mime_type_match($type, $avail) {
1637 if(array_key_exists($type, $avail)) {
1640 $parts = explode('/', $type);
1641 if(array_key_exists($parts[0] . '/*', $avail)) {
1642 return $parts[0] . '/*';
1643 } elseif(array_key_exists('*/*', $avail)) {
1651 function common_negotiate_type($cprefs, $sprefs) {
1654 foreach(array_keys($sprefs) as $type) {
1655 $parts = explode('/', $type);
1656 if($parts[1] != '*') {
1657 $ckey = common_mime_type_match($type, $cprefs);
1659 $combine[$type] = $sprefs[$type] * $cprefs[$ckey];
1664 foreach(array_keys($cprefs) as $type) {
1665 $parts = explode('/', $type);
1666 if($parts[1] != '*' && !array_key_exists($type, $sprefs)) {
1667 $skey = common_mime_type_match($type, $sprefs);
1669 $combine[$type] = $sprefs[$skey] * $cprefs[$type];
1675 $besttype = "text/html";
1677 foreach(array_keys($combine) as $type) {
1678 if($combine[$type] > $bestq) {
1680 $bestq = $combine[$type];
1687 function common_config($main, $sub) {
1689 return isset($config[$main][$sub]) ? $config[$main][$sub] : false;
1692 function common_copy_args($from) {
1694 $strip = get_magic_quotes_gpc();
1695 foreach ($from as $k => $v) {
1696 $to[$k] = ($strip) ? stripslashes($v) : $v;
1701 // Neutralise the evil effects of magic_quotes_gpc in the current request.
1702 // This is used before handing a request off to OAuthRequest::from_request.
1703 function common_remove_magic_from_request() {
1704 if(get_magic_quotes_gpc()) {
1705 $_POST=array_map('stripslashes',$_POST);
1706 $_GET=array_map('stripslashes',$_GET);
1710 function common_user_uri(&$user) {
1711 return common_local_url('userbyid', array('id' => $user->id));
1714 function common_notice_uri(&$notice) {
1715 return common_local_url('shownotice',
1716 array('notice' => $notice->id));
1719 # 36 alphanums - lookalikes (0, O, 1, I) = 32 chars = 5 bits
1721 function common_confirmation_code($bits) {
1722 # 36 alphanums - lookalikes (0, O, 1, I) = 32 chars = 5 bits
1723 static $codechars = '23456789ABCDEFGHJKLMNPQRSTUVWXYZ';
1724 $chars = ceil($bits/5);
1726 for ($i = 0; $i < $chars; $i++) {
1727 # XXX: convert to string and back
1728 $num = hexdec(common_good_rand(1));
1729 # XXX: randomness is too precious to throw away almost
1730 # 40% of the bits we get!
1731 $code .= $codechars[$num%32];
1736 # convert markup to HTML
1738 function common_markup_to_html($c) {
1739 $c = preg_replace('/%%action.(\w+)%%/e', "common_local_url('\\1')", $c);
1740 $c = preg_replace('/%%doc.(\w+)%%/e', "common_local_url('doc', array('title'=>'\\1'))", $c);
1741 $c = preg_replace('/%%(\w+).(\w+)%%/e', 'common_config(\'\\1\', \'\\2\')', $c);
1742 return Markdown($c);
1745 function common_profile_avatar_url($profile, $size=AVATAR_PROFILE_SIZE) {
1746 $avatar = $profile->getAvatar($size);
1748 return common_avatar_display_url($avatar);
1750 return common_default_avatar($size);
1754 function common_profile_uri($profile) {
1758 $user = User::staticGet($profile->id);
1763 $remote = Remote_profile::staticGet($profile->id);
1765 return $remote->uri;
1767 # XXX: this is a very bad profile!
1771 function common_canonical_sms($sms) {
1773 preg_replace('/\D/', '', $sms);
1777 function common_error_handler($errno, $errstr, $errfile, $errline, $errcontext) {
1780 common_log(LOG_ERR, "[$errno] $errstr ($errfile:$errline)");
1784 case E_USER_WARNING:
1785 common_log(LOG_WARNING, "[$errno] $errstr ($errfile:$errline)");
1789 common_log(LOG_NOTICE, "[$errno] $errstr ($errfile:$errline)");
1793 # FIXME: show error page if we're on the Web
1794 /* Don't execute PHP internal error handler */
1798 function common_session_token() {
1799 common_ensure_session();
1800 if (!array_key_exists('token', $_SESSION)) {
1801 $_SESSION['token'] = common_good_rand(64);
1803 return $_SESSION['token'];
1806 function common_disfavor_form($notice) {
1807 common_element_start('form', array('id' => 'disfavor-' . $notice->id,
1809 'class' => 'disfavor',
1810 'action' => common_local_url('disfavor')));
1811 common_hidden('token', common_session_token());
1812 common_hidden('notice', $notice->id);
1813 common_element('input', array('type' => 'submit',
1814 'id' => 'disfavor-submit-' . $notice->id,
1815 'name' => 'disfavor-submit-' . $notice->id,
1816 'class' => 'disfavor',
1818 common_element_end('form');
1821 function common_favor_form($notice) {
1822 common_element_start('form', array('id' => 'favor-' . $notice->id,
1825 'action' => common_local_url('favor')));
1826 common_hidden('token', common_session_token());
1827 common_hidden('notice', $notice->id);
1828 common_element('input', array('type' => 'submit',
1829 'id' => 'favor-submit-' . $notice->id,
1830 'name' => 'favor-submit-' . $notice->id,
1833 common_element_end('form');
1836 function common_cache_key($extra) {
1837 return 'laconica:' . common_keyize(common_config('site', 'name')) . ':' . $extra;
1840 function common_keyize($str) {
1841 $str = strtolower($str);
1842 $str = preg_replace('/\s/', '_', $str);
1846 function common_message_form($content, $user, $to) {
1848 common_element_start('form', array('id' => 'message_form',
1850 'action' => common_local_url('newmessage')));
1852 $mutual_users = $user->mutuallySubscribedUsers();
1856 while ($mutual_users->fetch()) {
1857 if ($mutual_users->id != $user->id) {
1858 $mutual[$mutual_users->id] = $mutual_users->nickname;
1862 $mutual_users->free();
1863 unset($mutual_users);
1865 common_dropdown('to', _('To'), $mutual, NULL, FALSE, $to->id);
1867 common_element_start('p');
1869 common_element('textarea', array('id' => 'message_content',
1872 'name' => 'content'),
1873 ($content) ? $content : '');
1875 common_element('input', array('id' => 'message_send',
1876 'name' => 'message_send',
1878 'value' => _('Send')));
1880 common_hidden('token', common_session_token());
1882 common_element_end('p');
1883 common_element_end('form');
1886 function common_memcache() {
1887 static $cache = NULL;
1888 if (!common_config('memcached', 'enabled')) {
1892 $cache = new Memcache();
1893 $servers = common_config('memcached', 'server');
1894 if (is_array($servers)) {
1895 foreach($servers as $server) {
1896 $cache->addServer($server);
1899 $cache->addServer($servers);