7 // Determine the allowed character set in short URLs
\r
8 function yourls_get_shorturl_charset() {
\r
9 static $charset = null;
\r
10 if( $charset !== null )
\r
13 if( !defined('YOURLS_URL_CONVERT') ) {
\r
14 $charset = '0123456789abcdefghijklmnopqrstuvwxyz';
\r
16 switch( YOURLS_URL_CONVERT ) {
\r
18 $charset = '0123456789abcdefghijklmnopqrstuvwxyz';
\r
21 case 64: // just because some people get this wrong in their config.php
\r
22 $charset = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
\r
27 $charset = yourls_apply_filter( 'get_shorturl_charset', $charset );
\r
31 // Make an optimized regexp pattern from a string of characters
\r
32 function yourls_make_regexp_pattern( $string ) {
\r
33 $pattern = preg_quote( $string, '-' ); // add - as an escaped characters -- this is fixed in PHP 5.3
\r
34 // TODO: replace char sequences by smart sequences such as 0-9, a-z, A-Z ... ?
\r
38 // Is an URL a short URL?
\r
39 function yourls_is_shorturl( $shorturl ) {
\r
40 // TODO: make sure this function evolves with the feature set.
\r
43 $keyword = preg_replace( '!^'.YOURLS_SITE.'/!', '', $shorturl ); // accept either 'http://ozh.in/abc' or 'abc'
\r
44 if( $keyword && $keyword == yourls_sanitize_string( $keyword ) && yourls_keyword_is_taken( $keyword ) ) {
\r
48 return yourls_apply_filter( 'is_shorturl', $is_short, $shorturl );
\r
51 // Check to see if a given keyword is reserved (ie reserved URL or an existing page)
\r
53 function yourls_keyword_is_reserved( $keyword ) {
\r
54 global $yourls_reserved_URL;
\r
55 $keyword = yourls_sanitize_keyword( $keyword );
\r
58 if ( in_array( $keyword, $yourls_reserved_URL)
\r
59 or file_exists( YOURLS_ABSPATH ."/pages/$keyword.php" )
\r
60 or is_dir( YOURLS_ABSPATH ."/$keyword" )
\r
64 return yourls_apply_filter( 'keyword_is_reserved', $reserved, $keyword );
\r
67 // Function: Get IP Address. Returns a DB safe string.
\r
68 function yourls_get_IP() {
\r
69 if( !empty( $_SERVER['REMOTE_ADDR'] ) ) {
\r
70 $ip = $_SERVER['REMOTE_ADDR'];
\r
72 if(!empty($_SERVER['HTTP_CLIENT_IP'])) {
\r
73 $ip = $_SERVER['HTTP_CLIENT_IP'];
\r
74 } else if(!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
\r
75 $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
\r
76 } else if(!empty($_SERVER['HTTP_VIA '])) {
\r
77 $ip = $_SERVER['HTTP_VIA '];
\r
81 return yourls_apply_filter( 'get_IP', yourls_sanitize_ip( $ip ) );
\r
84 // Get next id a new link will have if no custom keyword provided
\r
85 function yourls_get_next_decimal() {
\r
86 return yourls_apply_filter( 'get_next_decimal', (int)yourls_get_option( 'next_id' ) );
\r
89 // Update id for next link with no custom keyword
\r
90 function yourls_update_next_decimal( $int = '' ) {
\r
91 $int = ( $int == '' ) ? yourls_get_next_decimal() + 1 : (int)$int ;
\r
92 $update = yourls_update_option( 'next_id', $int );
\r
93 yourls_do_action( 'update_next_decimal', $int, $update );
\r
97 // Delete a link in the DB
\r
98 function yourls_delete_link_by_keyword( $keyword ) {
\r
101 $table = YOURLS_DB_TABLE_URL;
\r
102 $keyword = yourls_sanitize_string( $keyword );
\r
103 $delete = $ydb->query("DELETE FROM `$table` WHERE `keyword` = '$keyword';");
\r
104 yourls_do_action( 'delete_link', $keyword, $delete );
\r
108 // SQL query to insert a new link in the DB. Returns boolean for success or failure of the inserting
\r
109 function yourls_insert_link_in_db( $url, $keyword, $title = '' ) {
\r
112 $url = addslashes( yourls_sanitize_url( $url ) );
\r
113 $keyword = addslashes( yourls_sanitize_keyword( $keyword ) );
\r
114 $title = addslashes( yourls_sanitize_title( $title ) );
\r
116 $table = YOURLS_DB_TABLE_URL;
\r
117 $timestamp = date('Y-m-d H:i:s');
\r
118 $ip = yourls_get_IP();
\r
119 $insert = $ydb->query("INSERT INTO `$table` (`keyword`, `url`, `title`, `timestamp`, `ip`, `clicks`) VALUES('$keyword', '$url', '$title', '$timestamp', '$ip', 0);");
\r
121 yourls_do_action( 'insert_link', (bool)$insert, $url, $keyword, $title, $timestamp, $ip );
\r
123 return (bool)$insert;
\r
126 // Check if a URL already exists in the DB. Return NULL (doesn't exist) or an object with URL informations.
\r
127 function yourls_url_exists( $url ) {
\r
128 // Allow plugins to short-circuit the whole function
\r
129 $pre = yourls_apply_filter( 'shunt_url_exists', false, $url );
\r
130 if ( false !== $pre )
\r
134 $table = YOURLS_DB_TABLE_URL;
\r
135 $strip_url = stripslashes($url);
\r
136 $url_exists = $ydb->get_row("SELECT * FROM `$table` WHERE `url` = '".$strip_url."';");
\r
138 return yourls_apply_filter( 'url_exists', $url_exists, $url );
\r
141 // Add a new link in the DB, either with custom keyword, or find one
\r
142 function yourls_add_new_link( $url, $keyword = '', $title = '' ) {
\r
145 // Allow plugins to short-circuit the whole function
\r
146 $pre = yourls_apply_filter( 'shunt_add_new_link', false, $url, $keyword, $title );
\r
147 if ( false !== $pre )
\r
150 if ( !$url || $url == 'http://' || $url == 'https://' ) {
\r
151 $return['status'] = 'fail';
\r
152 $return['code'] = 'error:nourl';
\r
153 $return['message'] = 'Missing URL input';
\r
154 $return['errorCode'] = '400';
\r
155 return yourls_apply_filter( 'add_new_link_fail_nourl', $return, $url, $keyword, $title );
\r
158 // Prevent DB flood
\r
159 $ip = yourls_get_IP();
\r
160 yourls_check_IP_flood( $ip );
\r
162 // Prevent internal redirection loops: cannot shorten a shortened URL
\r
163 $url = yourls_escape( yourls_sanitize_url($url) );
\r
164 if( preg_match( '!^'.YOURLS_SITE.'/!', $url ) ) {
\r
165 if( yourls_is_shorturl( $url ) ) {
\r
166 $return['status'] = 'fail';
\r
167 $return['code'] = 'error:noloop';
\r
168 $return['message'] = 'URL is a short URL';
\r
169 $return['errorCode'] = '400';
\r
170 return yourls_apply_filter( 'add_new_link_fail_noloop', $return, $url, $keyword, $title );
\r
174 yourls_do_action( 'pre_add_new_link', $url, $keyword, $title );
\r
176 $strip_url = stripslashes($url);
\r
179 // duplicates allowed or new URL => store it
\r
180 if( yourls_allow_duplicate_longurls() || !yourls_url_exists( $url ) ) {
\r
182 if( isset( $title ) && !empty( $title ) ) {
\r
183 $title = yourls_sanitize_title( $title );
\r
185 $title = yourls_get_remote_title( $url );
\r
187 $title = yourls_apply_filter( 'add_new_title', $title, $url, $keyword );
\r
189 // Custom keyword provided
\r
192 yourls_do_action( 'add_new_link_custom_keyword', $url, $keyword, $title );
\r
194 $keyword = yourls_escape( yourls_sanitize_string($keyword) );
\r
195 $keyword = yourls_apply_filter( 'custom_keyword', $keyword, $url, $title );
\r
196 if ( !yourls_keyword_is_free($keyword) ) {
\r
197 // This shorturl either reserved or taken already
\r
198 $return['status'] = 'fail';
\r
199 $return['code'] = 'error:keyword';
\r
200 $return['message'] = 'Short URL '.$keyword.' already exists in database or is reserved';
\r
202 // all clear, store !
\r
203 yourls_insert_link_in_db( $url, $keyword, $title );
\r
204 $return['url'] = array('keyword' => $keyword, 'url' => $strip_url, 'title' => $title, 'date' => date('Y-m-d H:i:s'), 'ip' => $ip );
\r
205 $return['status'] = 'success';
\r
206 $return['message'] = yourls_trim_long_string( $strip_url ).' added to database';
\r
207 $return['title'] = $title;
\r
208 $return['html'] = yourls_table_add_row( $keyword, $url, $title, $ip, 0, time() );
\r
209 $return['shorturl'] = YOURLS_SITE .'/'. $keyword;
\r
212 // Create random keyword
\r
215 yourls_do_action( 'add_new_link_create_keyword', $url, $keyword, $title );
\r
217 $timestamp = date('Y-m-d H:i:s');
\r
218 $id = yourls_get_next_decimal();
\r
221 $keyword = yourls_int2string( $id );
\r
222 $keyword = yourls_apply_filter( 'random_keyword', $keyword, $url, $title );
\r
223 $free = yourls_keyword_is_free($keyword);
\r
224 $add_url = @yourls_insert_link_in_db( $url, $keyword, $title );
\r
225 $ok = ($free && $add_url);
\r
226 if ( $ok === false && $add_url === 1 ) {
\r
227 // we stored something, but shouldn't have (ie reserved id)
\r
228 $delete = yourls_delete_link_by_keyword( $keyword );
\r
229 $return['extra_info'] .= '(deleted '.$keyword.')';
\r
231 // everything ok, populate needed vars
\r
232 $return['url'] = array('keyword' => $keyword, 'url' => $strip_url, 'title' => $title, 'date' => $timestamp, 'ip' => $ip );
\r
233 $return['status'] = 'success';
\r
234 $return['message'] = yourls_trim_long_string( $strip_url ).' added to database';
\r
235 $return['title'] = $title;
\r
236 $return['html'] = yourls_table_add_row( $keyword, $url, $title, $ip, 0, time() );
\r
237 $return['shorturl'] = YOURLS_SITE .'/'. $keyword;
\r
241 @yourls_update_next_decimal($id);
\r
244 // URL was already stored
\r
247 yourls_do_action( 'add_new_link_already_stored', $url, $keyword, $title );
\r
249 $return['status'] = 'fail';
\r
250 $return['code'] = 'error:url';
\r
251 $return['url'] = array( 'keyword' => $url_exists->keyword, 'url' => $strip_url, 'title' => $url_exists->title, 'date' => $url_exists->timestamp, 'ip' => $url_exists->ip, 'clicks' => $url_exists->clicks );
\r
252 $return['message'] = yourls_trim_long_string( $strip_url ).' already exists in database';
\r
253 $return['title'] = $url_exists->title;
\r
254 $return['shorturl'] = YOURLS_SITE .'/'. $url_exists->keyword;
\r
257 yourls_do_action( 'post_add_new_link', $url, $keyword, $title );
\r
259 $return['statusCode'] = 200; // regardless of result, this is still a valid request
\r
260 return yourls_apply_filter( 'add_new_link', $return, $url, $keyword, $title );
\r
265 function yourls_edit_link( $url, $keyword, $newkeyword='', $title='' ) {
\r
268 $table = YOURLS_DB_TABLE_URL;
\r
269 $url = yourls_escape(yourls_sanitize_url($url));
\r
270 $keyword = yourls_escape(yourls_sanitize_string( $keyword ));
\r
271 $title = yourls_escape(yourls_sanitize_title( $title ));
\r
272 $newkeyword = yourls_escape(yourls_sanitize_string( $newkeyword ));
\r
273 $strip_url = stripslashes($url);
\r
274 $strip_title = stripslashes($title);
\r
275 $old_url = $ydb->get_var("SELECT `url` FROM `$table` WHERE `keyword` = '$keyword';");
\r
277 // Check if new URL is not here already
\r
278 if ( $old_url != $url && !yourls_allow_duplicate_longurls() ) {
\r
279 $new_url_already_there = intval($ydb->get_var("SELECT COUNT(keyword) FROM `$table` WHERE `url` = '$strip_url';"));
\r
281 $new_url_already_there = false;
\r
284 // Check if the new keyword is not here already
\r
285 if ( $newkeyword != $keyword ) {
\r
286 $keyword_is_ok = yourls_keyword_is_free( $newkeyword );
\r
288 $keyword_is_ok = true;
\r
291 yourls_do_action( 'pre_edit_link', $url, $keyword, $newkeyword, $new_url_already_there, $keyword_is_ok );
\r
293 // All clear, update
\r
294 if ( ( !$new_url_already_there || yourls_allow_duplicate_longurls() ) && $keyword_is_ok ) {
\r
295 $update_url = $ydb->query("UPDATE `$table` SET `url` = '$url', `keyword` = '$newkeyword', `title` = '$title' WHERE `keyword` = '$keyword';");
\r
296 if( $update_url ) {
\r
297 $return['url'] = array( 'keyword' => $newkeyword, 'shorturl' => YOURLS_SITE.'/'.$newkeyword, 'url' => $strip_url, 'display_url' => yourls_trim_long_string( $strip_url ), 'title' => $strip_title, 'display_title' => yourls_trim_long_string( $strip_title ) );
\r
298 $return['status'] = 'success';
\r
299 $return['message'] = 'Link updated in database';
\r
301 $return['status'] = 'fail';
\r
302 $return['message'] = 'Error updating '. yourls_trim_long_string( $strip_url ).' (Short URL: '.$keyword.') to database';
\r
307 $return['status'] = 'fail';
\r
308 $return['message'] = 'URL or keyword already exists in database';
\r
311 return yourls_apply_filter( 'edit_link', $return, $url, $keyword, $newkeyword, $title, $new_url_already_there, $keyword_is_ok );
\r
314 // Update a title link (no checks for duplicates etc..)
\r
315 function yourls_edit_link_title( $keyword, $title ) {
\r
318 $keyword = yourls_escape( yourls_sanitize_keyword( $keyword ) );
\r
319 $title = yourls_escape( yourls_sanitize_title( $title ) );
\r
321 $table = YOURLS_DB_TABLE_URL;
\r
322 $update = $ydb->query("UPDATE `$table` SET `title` = '$title' WHERE `keyword` = '$keyword';");
\r
328 // Check if keyword id is free (ie not already taken, and not reserved). Return bool.
\r
329 function yourls_keyword_is_free( $keyword ) {
\r
331 if ( yourls_keyword_is_reserved( $keyword ) or yourls_keyword_is_taken( $keyword ) )
\r
334 return yourls_apply_filter( 'keyword_is_free', $free, $keyword );
\r
337 // Check if a keyword is taken (ie there is already a short URL with this id). Return bool.
\r
338 function yourls_keyword_is_taken( $keyword ) {
\r
340 $keyword = yourls_sanitize_keyword( $keyword );
\r
342 $table = YOURLS_DB_TABLE_URL;
\r
343 $already_exists = $ydb->get_var("SELECT COUNT(`keyword`) FROM `$table` WHERE `keyword` = '$keyword';");
\r
344 if ( $already_exists )
\r
347 return yourls_apply_filter( 'keyword_is_taken', $taken, $keyword );
\r
352 function yourls_db_connect() {
\r
355 if (!defined('YOURLS_DB_USER')
\r
356 or !defined('YOURLS_DB_PASS')
\r
357 or !defined('YOURLS_DB_NAME')
\r
358 or !defined('YOURLS_DB_HOST')
\r
359 or !class_exists('ezSQL_mysql')
\r
360 ) yourls_die ('DB config missing, or could not find DB class', 'Fatal error', 503);
\r
362 // Are we standalone or in the WordPress environment?
\r
363 if ( class_exists('wpdb') ) {
\r
364 $ydb = new wpdb(YOURLS_DB_USER, YOURLS_DB_PASS, YOURLS_DB_NAME, YOURLS_DB_HOST);
\r
366 $ydb = new ezSQL_mysql(YOURLS_DB_USER, YOURLS_DB_PASS, YOURLS_DB_NAME, YOURLS_DB_HOST);
\r
368 if ( $ydb->last_error )
\r
369 yourls_die( $ydb->last_error, 'Fatal error', 503 );
\r
371 if ( defined('YOURLS_DEBUG') && YOURLS_DEBUG === true )
\r
372 $ydb->show_errors = true;
\r
377 // Return XML output.
\r
378 function yourls_xml_encode($array) {
\r
379 require_once(YOURLS_INC.'/functions-xml.php');
\r
380 $converter= new yourls_array2xml;
\r
381 return $converter->array2xml($array);
\r
384 // Return array of all informations associated with keyword. Returns false if keyword not found. Set optional $use_cache to false to force fetching from DB
\r
385 function yourls_get_keyword_infos( $keyword, $use_cache = true ) {
\r
387 $keyword = yourls_sanitize_string( $keyword );
\r
389 yourls_do_action( 'pre_get_keyword', $keyword, $use_cache );
\r
391 if( isset( $ydb->infos[$keyword] ) && $use_cache == true ) {
\r
392 return yourls_apply_filter( 'get_keyword_infos', $ydb->infos[$keyword], $keyword );
\r
395 yourls_do_action( 'get_keyword_not_cached', $keyword );
\r
397 $table = YOURLS_DB_TABLE_URL;
\r
398 $infos = $ydb->get_row("SELECT * FROM `$table` WHERE `keyword` = '$keyword'");
\r
401 $infos = (array)$infos;
\r
402 $ydb->infos[$keyword] = $infos;
\r
404 $ydb->infos[$keyword] = false;
\r
407 return yourls_apply_filter( 'get_keyword_infos', $ydb->infos[$keyword], $keyword );
\r
410 // Return (string) selected information associated with a keyword. Optional $notfound = string default message if nothing found
\r
411 function yourls_get_keyword_info( $keyword, $field, $notfound = false ) {
\r
413 // Allow plugins to short-circuit the whole function
\r
414 $pre = yourls_apply_filter( 'shunt_get_keyword_info', false, $keyword, $field, $notfound );
\r
415 if ( false !== $pre )
\r
418 $keyword = yourls_sanitize_string( $keyword );
\r
419 $infos = yourls_get_keyword_infos( $keyword );
\r
421 $return = $notfound;
\r
422 if ( isset($infos[$field]) && $infos[$field] !== false )
\r
423 $return = $infos[$field];
\r
425 return yourls_apply_filter( 'get_keyword_info', $return, $keyword, $field, $notfound );
\r
428 // Return title associated with keyword. Optional $notfound = string default message if nothing found
\r
429 function yourls_get_keyword_title( $keyword, $notfound = false ) {
\r
430 return yourls_get_keyword_info( $keyword, 'title', $notfound );
\r
433 // Return long URL associated with keyword. Optional $notfound = string default message if nothing found
\r
434 function yourls_get_keyword_longurl( $keyword, $notfound = false ) {
\r
435 return yourls_get_keyword_info( $keyword, 'url', $notfound );
\r
438 // Return number of clicks on a keyword. Optional $notfound = string default message if nothing found
\r
439 function yourls_get_keyword_clicks( $keyword, $notfound = false ) {
\r
440 return yourls_get_keyword_info( $keyword, 'clicks', $notfound );
\r
443 // Return IP that added a keyword. Optional $notfound = string default message if nothing found
\r
444 function yourls_get_keyword_IP( $keyword, $notfound = false ) {
\r
445 return yourls_get_keyword_info( $keyword, 'ip', $notfound );
\r
448 // Return timestamp associated with a keyword. Optional $notfound = string default message if nothing found
\r
449 function yourls_get_keyword_timestamp( $keyword, $notfound = false ) {
\r
450 return yourls_get_keyword_info( $keyword, 'timestamp', $notfound );
\r
453 // Update click count on a short URL. Return 0/1 for error/success.
\r
454 function yourls_update_clicks( $keyword ) {
\r
455 // Allow plugins to short-circuit the whole function
\r
456 $pre = yourls_apply_filter( 'shunt_update_clicks', false, $keyword );
\r
457 if ( false !== $pre )
\r
461 $keyword = yourls_sanitize_string( $keyword );
\r
462 $table = YOURLS_DB_TABLE_URL;
\r
463 $update = $ydb->query("UPDATE `$table` SET `clicks` = clicks + 1 WHERE `keyword` = '$keyword'");
\r
464 yourls_do_action( 'update_clicks', $keyword, $update );
\r
468 // Return array of stats. (string)$filter is 'bottom', 'last', 'rand' or 'top'. (int)$limit is the number of links to return
\r
469 function yourls_get_stats( $filter = 'top', $limit = 10, $start = 0 ) {
\r
472 switch( $filter ) {
\r
474 $sort_by = 'clicks';
\r
475 $sort_order = 'asc';
\r
478 $sort_by = 'timestamp';
\r
479 $sort_order = 'desc';
\r
483 $sort_by = 'RAND()';
\r
488 $sort_by = 'clicks';
\r
489 $sort_order = 'desc';
\r
494 $limit = intval( $limit );
\r
495 $start = intval( $start );
\r
496 if ( $limit > 0 ) {
\r
498 $table_url = YOURLS_DB_TABLE_URL;
\r
499 $results = $ydb->get_results("SELECT * FROM `$table_url` WHERE 1=1 ORDER BY `$sort_by` $sort_order LIMIT $start, $limit;");
\r
504 foreach ( (array)$results as $res) {
\r
505 $return['links']['link_'.$i++] = array(
\r
506 'shorturl' => YOURLS_SITE .'/'. $res->keyword,
\r
507 'url' => $res->url,
\r
508 'title' => $res->title,
\r
509 'timestamp'=> $res->timestamp,
\r
511 'clicks' => $res->clicks,
\r
516 $return['stats'] = yourls_get_db_stats();
\r
518 $return['statusCode'] = 200;
\r
520 return yourls_apply_filter( 'get_stats', $return, $filter, $limit, $start );
\r
523 // Return array of stats. (string)$filter is 'bottom', 'last', 'rand' or 'top'. (int)$limit is the number of links to return
\r
524 function yourls_get_link_stats( $shorturl ) {
\r
527 $table_url = YOURLS_DB_TABLE_URL;
\r
528 $res = $ydb->get_row("SELECT * FROM `$table_url` WHERE keyword = '$shorturl';");
\r
532 // non existent link
\r
534 'statusCode' => 404,
\r
535 'message' => 'Error: short URL not found',
\r
539 'statusCode' => 200,
\r
540 'message' => 'success',
\r
542 'shorturl' => YOURLS_SITE .'/'. $res->keyword,
\r
543 'url' => $res->url,
\r
544 'title' => $res->title,
\r
545 'timestamp'=> $res->timestamp,
\r
547 'clicks' => $res->clicks,
\r
552 return yourls_apply_filter( 'get_link_stats', $return, $shorturl );
\r
555 // Return array for API stat requests
\r
556 function yourls_api_stats( $filter = 'top', $limit = 10, $start = 0 ) {
\r
557 $return = yourls_get_stats( $filter, $limit, $start );
\r
558 $return['simple'] = 'Need either XML or JSON format for stats';
\r
559 $return['message'] = 'success';
\r
560 return yourls_apply_filter( 'api_stats', $return, $filter, $limit, $start );
\r
563 // Return array for counts of shorturls and clicks
\r
564 function yourls_api_db_stats() {
\r
565 $return = yourls_get_db_stats();
\r
566 $return['simple'] = 'Need either XML or JSON format for stats';
\r
567 $return['message'] = 'success';
\r
568 return yourls_apply_filter( 'api_db_stats', $return );
\r
571 // Return array for API stat requests
\r
572 function yourls_api_url_stats($shorturl) {
\r
573 $keyword = str_replace( YOURLS_SITE . '/' , '', $shorturl ); // accept either 'http://ozh.in/abc' or 'abc'
\r
574 $keyword = yourls_sanitize_string( $keyword );
\r
576 $return = yourls_get_link_stats( $keyword );
\r
577 $return['simple'] = 'Need either XML or JSON format for stats';
\r
578 return yourls_apply_filter( 'api_url_stats', $return, $shorturl );
\r
581 // Expand short url to long url
\r
582 function yourls_api_expand( $shorturl ) {
\r
583 $keyword = str_replace( YOURLS_SITE . '/' , '', $shorturl ); // accept either 'http://ozh.in/abc' or 'abc'
\r
584 $keyword = yourls_sanitize_string( $keyword );
\r
586 $longurl = yourls_get_keyword_longurl( $keyword );
\r
590 'keyword' => $keyword,
\r
591 'shorturl' => YOURLS_SITE . "/$keyword",
\r
592 'longurl' => $longurl,
\r
593 'simple' => $longurl,
\r
594 'message' => 'success',
\r
595 'statusCode' => 200,
\r
599 'keyword' => $keyword,
\r
600 'simple' => 'not found',
\r
601 'message' => 'Error: short URL not found',
\r
602 'errorCode' => 404,
\r
606 return yourls_apply_filter( 'api_expand', $return, $shorturl );
\r
610 // Get total number of URLs and sum of clicks. Input: optional "AND WHERE" clause. Returns array
\r
611 function yourls_get_db_stats( $where = '' ) {
\r
613 $table_url = YOURLS_DB_TABLE_URL;
\r
615 $totals = $ydb->get_row("SELECT COUNT(keyword) as count, SUM(clicks) as sum FROM `$table_url` WHERE 1=1 $where");
\r
616 $return = array( 'total_links' => $totals->count, 'total_clicks' => $totals->sum );
\r
618 return yourls_apply_filter( 'get_db_stats', $return, $where );
\r
621 // Return API result. Dies after this
\r
622 function yourls_api_output( $mode, $return ) {
\r
623 if( isset( $return['simple'] ) ) {
\r
624 $simple = $return['simple'];
\r
625 unset( $return['simple'] );
\r
628 yourls_do_action( 'pre_api_output', $mode, $return );
\r
632 header('Content-type: application/javascript');
\r
633 echo $return['callback'] . '(' . json_encode($return) . ')';
\r
637 header('Content-type: application/json');
\r
638 echo json_encode($return);
\r
642 header('Content-type: application/xml');
\r
643 echo yourls_xml_encode($return);
\r
648 if( isset( $simple ) )
\r
653 yourls_do_action( 'api_output', $mode, $return );
\r
658 // Get number of SQL queries performed
\r
659 function yourls_get_num_queries() {
\r
662 return yourls_apply_filter( 'get_num_queries', $ydb->num_queries );
\r
665 // Returns a sanitized a user agent string. Given what I found on http://www.user-agents.org/ it should be OK.
\r
666 function yourls_get_user_agent() {
\r
667 if ( !isset( $_SERVER['HTTP_USER_AGENT'] ) )
\r
670 $ua = strip_tags( html_entity_decode( $_SERVER['HTTP_USER_AGENT'] ));
\r
671 $ua = preg_replace('![^0-9a-zA-Z\':., /{}\(\)\[\]\+@&\!\?;_\-=~\*\#]!', '', $ua );
\r
673 return yourls_apply_filter( 'get_user_agent', substr( $ua, 0, 254 ) );
\r
676 // Redirect to another page
\r
677 function yourls_redirect( $location, $code = 301 ) {
\r
678 yourls_do_action( 'pre_redirect', $location, $code );
\r
679 $location = yourls_apply_filter( 'redirect', $location, $code );
\r
680 // Redirect, either properly if possible, or via Javascript otherwise
\r
681 if( !headers_sent() ) {
\r
682 yourls_status_header( $code );
\r
683 header( "Location: $location" );
\r
685 yourls_redirect_javascript( $location );
\r
690 // Set HTTP status header
\r
691 function yourls_status_header( $code = 200 ) {
\r
692 if( headers_sent() )
\r
695 $protocol = $_SERVER["SERVER_PROTOCOL"];
\r
696 if ( 'HTTP/1.1' != $protocol && 'HTTP/1.0' != $protocol )
\r
697 $protocol = 'HTTP/1.0';
\r
699 $code = intval( $code );
\r
700 $desc = yourls_get_HTTP_status( $code );
\r
702 @header ("$protocol $code $desc"); // This causes problems on IIS and some FastCGI setups
\r
703 yourls_do_action( 'status_header', $code );
\r
706 // Redirect to another page using Javascript. Set optional (bool)$dontwait to false to force manual redirection (make sure a message has been read by user)
\r
707 function yourls_redirect_javascript( $location, $dontwait = true ) {
\r
708 yourls_do_action( 'pre_redirect_javascript', $location, $dontwait );
\r
709 $location = yourls_apply_filter( 'redirect_javascript', $location, $dontwait );
\r
712 <script type="text/javascript">
\r
713 window.location="$location";
\r
715 <small>(if you are not redirected after 10 seconds, please <a href="$location">click here</a>)</small>
\r
719 <p>Please <a href="$location">click here</a></p>
\r
722 yourls_do_action( 'post_redirect_javascript', $location );
\r
725 // Return a HTTP status code
\r
726 function yourls_get_HTTP_status( $code ) {
\r
727 $code = intval( $code );
\r
728 $headers_desc = array(
\r
730 101 => 'Switching Protocols',
\r
731 102 => 'Processing',
\r
736 203 => 'Non-Authoritative Information',
\r
737 204 => 'No Content',
\r
738 205 => 'Reset Content',
\r
739 206 => 'Partial Content',
\r
740 207 => 'Multi-Status',
\r
743 300 => 'Multiple Choices',
\r
744 301 => 'Moved Permanently',
\r
746 303 => 'See Other',
\r
747 304 => 'Not Modified',
\r
748 305 => 'Use Proxy',
\r
750 307 => 'Temporary Redirect',
\r
752 400 => 'Bad Request',
\r
753 401 => 'Unauthorized',
\r
754 402 => 'Payment Required',
\r
755 403 => 'Forbidden',
\r
756 404 => 'Not Found',
\r
757 405 => 'Method Not Allowed',
\r
758 406 => 'Not Acceptable',
\r
759 407 => 'Proxy Authentication Required',
\r
760 408 => 'Request Timeout',
\r
763 411 => 'Length Required',
\r
764 412 => 'Precondition Failed',
\r
765 413 => 'Request Entity Too Large',
\r
766 414 => 'Request-URI Too Long',
\r
767 415 => 'Unsupported Media Type',
\r
768 416 => 'Requested Range Not Satisfiable',
\r
769 417 => 'Expectation Failed',
\r
770 422 => 'Unprocessable Entity',
\r
772 424 => 'Failed Dependency',
\r
773 426 => 'Upgrade Required',
\r
775 500 => 'Internal Server Error',
\r
776 501 => 'Not Implemented',
\r
777 502 => 'Bad Gateway',
\r
778 503 => 'Service Unavailable',
\r
779 504 => 'Gateway Timeout',
\r
780 505 => 'HTTP Version Not Supported',
\r
781 506 => 'Variant Also Negotiates',
\r
782 507 => 'Insufficient Storage',
\r
783 510 => 'Not Extended'
\r
786 if ( isset( $headers_desc[$code] ) )
\r
787 return $headers_desc[$code];
\r
793 // Log a redirect (for stats)
\r
794 function yourls_log_redirect( $keyword ) {
\r
795 // Allow plugins to short-circuit the whole function
\r
796 $pre = yourls_apply_filter( 'shunt_log_redirect', false, $keyword );
\r
797 if ( false !== $pre )
\r
800 if ( !yourls_do_log_redirect() )
\r
804 $table = YOURLS_DB_TABLE_LOG;
\r
806 $keyword = yourls_sanitize_string( $keyword );
\r
807 $referrer = ( isset( $_SERVER['HTTP_REFERER'] ) ? yourls_sanitize_url( $_SERVER['HTTP_REFERER'] ) : 'direct' );
\r
808 $ua = yourls_get_user_agent();
\r
809 $ip = yourls_get_IP();
\r
810 $location = yourls_geo_ip_to_countrycode( $ip );
\r
812 return $ydb->query( "INSERT INTO `$table` (click_time, shorturl, referrer, user_agent, ip_address, country_code) VALUES (NOW(), '$keyword', '$referrer', '$ua', '$ip', '$location')" );
\r
815 // Check if we want to not log redirects (for stats)
\r
816 function yourls_do_log_redirect() {
\r
817 return ( !defined('YOURLS_NOSTATS') || YOURLS_NOSTATS != true );
\r
820 // Converts an IP to a 2 letter country code, using GeoIP database if available in includes/geo/
\r
821 function yourls_geo_ip_to_countrycode( $ip = '', $default = '' ) {
\r
822 // Allow plugins to short-circuit the Geo IP API
\r
823 $location = yourls_apply_filter( 'shunt_geo_ip_to_countrycode', false, $ip, $default ); // at this point $ip can be '', check if your plugin hooks in here
\r
824 if ( false !== $location )
\r
827 if ( !file_exists( YOURLS_INC.'/geo/GeoIP.dat') || !file_exists( YOURLS_INC.'/geo/geoip.inc') )
\r
831 $ip = yourls_get_IP();
\r
833 require_once( YOURLS_INC.'/geo/geoip.inc') ;
\r
834 $gi = geoip_open( YOURLS_INC.'/geo/GeoIP.dat', GEOIP_STANDARD);
\r
835 $location = geoip_country_code_by_addr($gi, $ip);
\r
838 return yourls_apply_filter( 'geo_ip_to_countrycode', $location, $ip, $default );
\r
841 // Converts a 2 letter country code to long name (ie AU -> Australia)
\r
842 function yourls_geo_countrycode_to_countryname( $code ) {
\r
843 // Allow plugins to short-circuit the Geo IP API
\r
844 $country = yourls_apply_filter( 'shunt_geo_countrycode_to_countryname', false, $code );
\r
845 if ( false !== $country )
\r
848 // Load the Geo class if not already done
\r
849 if( !class_exists('GeoIP') ) {
\r
850 $temp = yourls_geo_ip_to_countrycode('127.0.0.1');
\r
853 if( class_exists('GeoIP') ) {
\r
855 $id = $geo->GEOIP_COUNTRY_CODE_TO_NUMBER[$code];
\r
856 $long = $geo->GEOIP_COUNTRY_NAMES[$id];
\r
863 // Return flag URL from 2 letter country code
\r
864 function yourls_geo_get_flag( $code ) {
\r
865 if( file_exists( YOURLS_INC.'/geo/flags/flag_'.strtolower($code).'.gif' ) ) {
\r
866 $img = yourls_match_current_protocol( YOURLS_SITE.'/includes/geo/flags/flag_'.(strtolower($code)).'.gif' );
\r
870 return yourls_apply_filter( 'geo_get_flag', $img, $code );
\r
874 // Check if an upgrade is needed
\r
875 function yourls_upgrade_is_needed() {
\r
876 // check YOURLS_DB_VERSION exist && match values stored in YOURLS_DB_TABLE_OPTIONS
\r
877 list( $currentver, $currentsql ) = yourls_get_current_version_from_sql();
\r
878 if( $currentsql < YOURLS_DB_VERSION )
\r
884 // Get current version & db version as stored in the options DB. Prior to 1.4 there's no option table.
\r
885 function yourls_get_current_version_from_sql() {
\r
886 $currentver = yourls_get_option( 'version' );
\r
887 $currentsql = yourls_get_option( 'db_version' );
\r
889 // Values if version is 1.3
\r
891 $currentver = '1.3';
\r
893 $currentsql = '100';
\r
895 return array( $currentver, $currentsql);
\r
898 // Read an option from DB (or from cache if available). Return value or $default if not found
\r
899 function yourls_get_option( $option_name, $default = false ) {
\r
902 // Allow plugins to short-circuit options
\r
903 $pre = yourls_apply_filter( 'shunt_option_'.$option_name, false );
\r
904 if ( false !== $pre )
\r
907 // If option not cached already, get its value from the DB
\r
908 if ( !isset( $ydb->option[$option_name] ) ) {
\r
909 $table = YOURLS_DB_TABLE_OPTIONS;
\r
910 $option_name = yourls_escape( $option_name );
\r
911 $row = $ydb->get_row( "SELECT `option_value` FROM `$table` WHERE `option_name` = '$option_name' LIMIT 1" );
\r
912 if ( is_object( $row) ) { // Has to be get_row instead of get_var because of funkiness with 0, false, null values
\r
913 $value = $row->option_value;
\r
914 } else { // option does not exist, so we must cache its non-existence
\r
917 $ydb->option[$option_name] = yourls_maybe_unserialize( $value );
\r
920 return yourls_apply_filter( 'get_option_'.$option_name, $ydb->option[$option_name] );
\r
923 // Read all options from DB at once
\r
924 function yourls_get_all_options() {
\r
927 // Allow plugins to short-circuit all options. (Note: regular plugins are loaded after all options)
\r
928 $pre = yourls_apply_filter( 'shunt_all_options', false );
\r
929 if ( false !== $pre )
\r
932 $table = YOURLS_DB_TABLE_OPTIONS;
\r
934 $allopt = $ydb->get_results("SELECT `option_name`, `option_value` FROM `$table` WHERE 1=1");
\r
936 foreach( (array)$allopt as $option ) {
\r
937 $ydb->option[$option->option_name] = yourls_maybe_unserialize( $option->option_value );
\r
940 $ydb->option = yourls_apply_filter( 'get_all_options', $ydb->option );
\r
943 // Update (add if doesn't exist) an option to DB
\r
944 function yourls_update_option( $option_name, $newvalue ) {
\r
946 $table = YOURLS_DB_TABLE_OPTIONS;
\r
948 $safe_option_name = yourls_escape( $option_name );
\r
950 $oldvalue = yourls_get_option( $safe_option_name );
\r
952 // If the new and old values are the same, no need to update.
\r
953 if ( $newvalue === $oldvalue )
\r
956 if ( false === $oldvalue ) {
\r
957 yourls_add_option( $option_name, $newvalue );
\r
961 $_newvalue = yourls_escape( yourls_maybe_serialize( $newvalue ) );
\r
963 yourls_do_action( 'update_option', $option_name, $oldvalue, $newvalue );
\r
965 $ydb->query( "UPDATE `$table` SET `option_value` = '$_newvalue' WHERE `option_name` = '$option_name'");
\r
967 if ( $ydb->rows_affected == 1 ) {
\r
968 $ydb->option[$option_name] = $newvalue;
\r
974 // Add an option to the DB
\r
975 function yourls_add_option( $name, $value = '' ) {
\r
977 $table = YOURLS_DB_TABLE_OPTIONS;
\r
978 $safe_name = yourls_escape( $name );
\r
980 // Make sure the option doesn't already exist
\r
981 if ( false !== yourls_get_option( $safe_name ) )
\r
984 $_value = yourls_escape( yourls_maybe_serialize( $value ) );
\r
986 yourls_do_action( 'add_option', $safe_name, $_value );
\r
988 $ydb->query( "INSERT INTO `$table` (`option_name`, `option_value`) VALUES ('$name', '$_value')" );
\r
989 $ydb->option[$name] = $value;
\r
994 // Delete an option from the DB
\r
995 function yourls_delete_option( $name ) {
\r
997 $table = YOURLS_DB_TABLE_OPTIONS;
\r
998 $name = yourls_escape( $name );
\r
1000 // Get the ID, if no ID then return
\r
1001 $option = $ydb->get_row( "SELECT option_id FROM `$table` WHERE `option_name` = '$name'" );
\r
1002 if ( is_null($option) || !$option->option_id )
\r
1005 yourls_do_action( 'delete_option', $option_name );
\r
1007 $ydb->query( "DELETE FROM `$table` WHERE `option_name` = '$name'" );
\r
1013 // Serialize data if needed. Stolen from WordPress
\r
1014 function yourls_maybe_serialize( $data ) {
\r
1015 if ( is_array( $data ) || is_object( $data ) )
\r
1016 return serialize( $data );
\r
1018 if ( yourls_is_serialized( $data ) )
\r
1019 return serialize( $data );
\r
1024 // Check value to find if it was serialized. Stolen from WordPress
\r
1025 function yourls_is_serialized( $data ) {
\r
1026 // if it isn't a string, it isn't serialized
\r
1027 if ( !is_string( $data ) )
\r
1029 $data = trim( $data );
\r
1030 if ( 'N;' == $data )
\r
1032 if ( !preg_match( '/^([adObis]):/', $data, $badions ) )
\r
1034 switch ( $badions[1] ) {
\r
1038 if ( preg_match( "/^{$badions[1]}:[0-9]+:.*[;}]\$/s", $data ) )
\r
1044 if ( preg_match( "/^{$badions[1]}:[0-9.E-]+;\$/", $data ) )
\r
1051 // Unserialize value only if it was serialized. Stolen from WP
\r
1052 function yourls_maybe_unserialize( $original ) {
\r
1053 if ( yourls_is_serialized( $original ) ) // don't attempt to unserialize data that wasn't serialized going in
\r
1054 return @unserialize( $original );
\r
1058 // Determine if the current page is private
\r
1059 function yourls_is_private() {
\r
1062 if ( defined('YOURLS_PRIVATE') && YOURLS_PRIVATE == true ) {
\r
1064 // Allow overruling for particular pages:
\r
1067 if( yourls_is_API() ) {
\r
1068 if( !defined('YOURLS_PRIVATE_API') || YOURLS_PRIVATE_API != false )
\r
1072 } elseif( yourls_is_infos() ) {
\r
1073 if( !defined('YOURLS_PRIVATE_INFOS') || YOURLS_PRIVATE_INFOS !== false )
\r
1083 return yourls_apply_filter( 'is_private', $private );
\r
1086 // Show login form if required
\r
1087 function yourls_maybe_require_auth() {
\r
1088 if( yourls_is_private() )
\r
1089 require_once( YOURLS_INC.'/auth.php' );
\r
1092 // Allow several short URLs for the same long URL ?
\r
1093 function yourls_allow_duplicate_longurls() {
\r
1094 // special treatment if API to check for WordPress plugin requests
\r
1095 if( yourls_is_API() ) {
\r
1096 if ( isset($_REQUEST['source']) && $_REQUEST['source'] == 'plugin' )
\r
1099 return ( defined( 'YOURLS_UNIQUE_URLS' ) && YOURLS_UNIQUE_URLS == false );
\r
1102 // Return list of all shorturls associated to the same long URL. Returns NULL or array of keywords.
\r
1103 function yourls_get_duplicate_keywords( $longurl ) {
\r
1104 if( !yourls_allow_duplicate_longurls() )
\r
1108 $longurl = yourls_escape( yourls_sanitize_url($longurl) );
\r
1109 $table = YOURLS_DB_TABLE_URL;
\r
1111 $return = $ydb->get_col( "SELECT `keyword` FROM `$table` WHERE `url` = '$longurl'" );
\r
1112 return yourls_apply_filter( 'get_duplicate_keywords', $return, $longurl );
\r
1115 // Check if an IP shortens URL too fast to prevent DB flood. Return true, or die.
\r
1116 function yourls_check_IP_flood( $ip = '' ) {
\r
1118 // Allow plugins to short-circuit the whole function
\r
1119 $pre = yourls_apply_filter( 'shunt_check_IP_flood', false, $ip );
\r
1120 if ( false !== $pre )
\r
1123 yourls_do_action( 'pre_check_ip_flood', $ip ); // at this point $ip can be '', check it if your plugin hooks in here
\r
1126 ( defined('YOURLS_FLOOD_DELAY_SECONDS') && YOURLS_FLOOD_DELAY_SECONDS === 0 ) ||
\r
1127 !defined('YOURLS_FLOOD_DELAY_SECONDS')
\r
1131 $ip = ( $ip ? yourls_sanitize_ip( $ip ) : yourls_get_IP() );
\r
1133 // Don't throttle whitelist IPs
\r
1134 if( defined('YOURLS_FLOOD_IP_WHITELIST' && YOURLS_FLOOD_IP_WHITELIST ) ) {
\r
1135 $whitelist_ips = explode( ',', YOURLS_FLOOD_IP_WHITELIST );
\r
1136 foreach( (array)$whitelist_ips as $whitelist_ip ) {
\r
1137 $whitelist_ip = trim( $whitelist_ip );
\r
1138 if ( $whitelist_ip == $ip )
\r
1143 // Don't throttle logged in users
\r
1144 if( yourls_is_private() ) {
\r
1145 if( yourls_is_valid_user() === true )
\r
1149 yourls_do_action( 'check_ip_flood', $ip );
\r
1152 $table = YOURLS_DB_TABLE_URL;
\r
1154 $lasttime = $ydb->get_var( "SELECT `timestamp` FROM $table WHERE `ip` = '$ip' ORDER BY `timestamp` DESC LIMIT 1" );
\r
1156 $now = date( 'U' );
\r
1157 $then = date( 'U', strtotime( $lasttime ) );
\r
1158 if( ( $now - $then ) <= YOURLS_FLOOD_DELAY_SECONDS ) {
\r
1160 yourls_do_action( 'ip_flood', $ip, $now - $then );
\r
1161 yourls_die( 'Too many URLs added too fast. Slow down please.', 'Forbidden', 403 );
\r
1168 // Check if YOURLS is installed
\r
1169 function yourls_is_installed() {
\r
1170 static $is_installed = false;
\r
1171 if ( $is_installed === false ) {
\r
1172 $check_14 = $check_13 = false;
\r
1174 if( defined('YOURLS_DB_TABLE_NEXTDEC') )
\r
1175 $check_13 = $ydb->get_var('SELECT `next_id` FROM '.YOURLS_DB_TABLE_NEXTDEC);
\r
1176 $check_14 = yourls_get_option( 'version' );
\r
1177 $is_installed = $check_13 || $check_14;
\r
1179 return yourls_apply_filter( 'is_installed', $is_installed );
\r
1182 // Generate random string of (int)$length length and type $type (see function for details)
\r
1183 function yourls_rnd_string ( $length = 5, $type = 0, $charlist = '' ) {
\r
1185 $length = intval( $length );
\r
1187 // define possible characters
\r
1188 switch ( $type ) {
\r
1190 // custom char list, or comply to charset as defined in config
\r
1192 $possible = $charlist ? $charlist : yourls_get_shorturl_charset() ;
\r
1195 // no vowels to make no offending word, no 0/1/o/l to avoid confusion between letters & digits. Perfect for passwords.
\r
1197 $possible = "23456789bcdfghjkmnpqrstvwxyz";
\r
1200 // Same, with lower + upper
\r
1202 $possible = "23456789bcdfghjkmnpqrstvwxyzBCDFGHJKMNPQRSTVWXYZ";
\r
1205 // all letters, lowercase
\r
1207 $possible = "abcdefghijklmnopqrstuvwxyz";
\r
1210 // all letters, lowercase + uppercase
\r
1212 $possible = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
\r
1215 // all digits & letters lowercase
\r
1217 $possible = "0123456789abcdefghijklmnopqrstuvwxyz";
\r
1220 // all digits & letters lowercase + uppercase
\r
1222 $possible = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
\r
1228 while ($i < $length) {
\r
1229 $str .= substr($possible, mt_rand(0, strlen($possible)-1), 1);
\r
1233 return yourls_apply_filter( 'rnd_string', $str, $length, $type, $charlist );
\r
1236 // Return salted string
\r
1237 function yourls_salt( $string ) {
\r
1238 $salt = defined('YOURLS_COOKIEKEY') ? YOURLS_COOKIEKEY : md5(__FILE__) ;
\r
1239 return yourls_apply_filter( 'yourls_salt', md5 ($string . $salt), $string );
\r
1242 // Add a query var to a URL and return URL. Completely stolen from WP.
\r
1243 // Works with one of these parameter patterns:
\r
1244 // array( 'var' => 'value' )
\r
1245 // array( 'var' => 'value' ), $url
\r
1247 // 'var', 'value', $url
\r
1248 // If $url ommited, uses $_SERVER['REQUEST_URI']
\r
1249 function yourls_add_query_arg() {
\r
1251 if ( is_array( func_get_arg(0) ) ) {
\r
1252 if ( @func_num_args() < 2 || false === @func_get_arg( 1 ) )
\r
1253 $uri = $_SERVER['REQUEST_URI'];
\r
1255 $uri = @func_get_arg( 1 );
\r
1257 if ( @func_num_args() < 3 || false === @func_get_arg( 2 ) )
\r
1258 $uri = $_SERVER['REQUEST_URI'];
\r
1260 $uri = @func_get_arg( 2 );
\r
1263 $uri = str_replace( '&', '&', $uri );
\r
1266 if ( $frag = strstr( $uri, '#' ) )
\r
1267 $uri = substr( $uri, 0, -strlen( $frag ) );
\r
1271 if ( preg_match( '|^https?://|i', $uri, $matches ) ) {
\r
1272 $protocol = $matches[0];
\r
1273 $uri = substr( $uri, strlen( $protocol ) );
\r
1278 if ( strpos( $uri, '?' ) !== false ) {
\r
1279 $parts = explode( '?', $uri, 2 );
\r
1280 if ( 1 == count( $parts ) ) {
\r
1282 $query = $parts[0];
\r
1284 $base = $parts[0] . '?';
\r
1285 $query = $parts[1];
\r
1287 } elseif ( !empty( $protocol ) || strpos( $uri, '=' ) === false ) {
\r
1288 $base = $uri . '?';
\r
1295 parse_str( $query, $qs );
\r
1296 $qs = yourls_urlencode_deep( $qs ); // this re-URL-encodes things that were already in the query string
\r
1297 if ( is_array( func_get_arg( 0 ) ) ) {
\r
1298 $kayvees = func_get_arg( 0 );
\r
1299 $qs = array_merge( $qs, $kayvees );
\r
1301 $qs[func_get_arg( 0 )] = func_get_arg( 1 );
\r
1304 foreach ( (array) $qs as $k => $v ) {
\r
1305 if ( $v === false )
\r
1309 $ret = http_build_query( $qs );
\r
1310 $ret = trim( $ret, '?' );
\r
1311 $ret = preg_replace( '#=(&|$)#', '$1', $ret );
\r
1312 $ret = $protocol . $base . $ret . $frag;
\r
1313 $ret = rtrim( $ret, '?' );
\r
1317 // Navigates through an array and encodes the values to be used in a URL. Stolen from WP, used in yourls_add_query_arg()
\r
1318 function yourls_urlencode_deep($value) {
\r
1319 $value = is_array($value) ? array_map('yourls_urlencode_deep', $value) : urlencode($value);
\r
1323 // Remove arg from query. Opposite of yourls_add_query_arg. Stolen from WP.
\r
1324 function yourls_remove_query_arg( $key, $query = false ) {
\r
1325 if ( is_array( $key ) ) { // removing multiple keys
\r
1326 foreach ( $key as $k )
\r
1327 $query = yourls_add_query_arg( $k, false, $query );
\r
1330 return yourls_add_query_arg( $key, false, $query );
\r
1333 // Return a time-dependent string for nonce creation
\r
1334 function yourls_tick() {
\r
1335 return ceil( time() / YOURLS_NONCE_LIFE );
\r
1338 // Create a time limited, action limited and user limited token
\r
1339 function yourls_create_nonce( $action, $user = false ) {
\r
1340 if( false == $user )
\r
1341 $user = defined('YOURLS_USER') ? YOURLS_USER : '-1';
\r
1342 $tick = yourls_tick();
\r
1343 return substr( yourls_salt($tick . $action . $user), 0, 10 );
\r
1346 // Create a nonce field for inclusion into a form
\r
1347 function yourls_nonce_field( $action, $name = 'nonce', $user = false, $echo = true ) {
\r
1348 $field = '<input type="hidden" id="'.$name.'" name="'.$name.'" value="'.yourls_create_nonce( $action, $user ).'" />';
\r
1354 // Add a nonce to a URL. If URL omitted, adds nonce to current URL
\r
1355 function yourls_nonce_url( $action, $url = false, $name = 'nonce', $user = false ) {
\r
1356 $nonce = yourls_create_nonce( $action, $user );
\r
1357 return yourls_add_query_arg( $name, $nonce, $url );
\r
1360 // Check validity of a nonce (ie time span, user and action match).
\r
1361 // Returns true if valid, dies otherwise (yourls_die() or die($return) if defined)
\r
1362 // if $nonce is false or unspecified, it will use $_REQUEST['nonce']
\r
1363 function yourls_verify_nonce( $action, $nonce = false, $user = false, $return = '' ) {
\r
1365 if( false == $user )
\r
1366 $user = defined('YOURLS_USER') ? YOURLS_USER : '-1';
\r
1368 // get current nonce value
\r
1369 if( false == $nonce && isset( $_REQUEST['nonce'] ) )
\r
1370 $nonce = $_REQUEST['nonce'];
\r
1372 // what nonce should be
\r
1373 $valid = yourls_create_nonce( $action, $user );
\r
1375 if( $nonce == $valid ) {
\r
1380 yourls_die( 'Unauthorized action or expired link', 'Error', 403 );
\r
1384 // Converts keyword into short link (prepend with YOURLS base URL)
\r
1385 function yourls_link( $keyword = '' ) {
\r
1386 $link = YOURLS_SITE . '/' . yourls_sanitize_keyword( $keyword );
\r
1387 return yourls_apply_filter( 'yourls_link', $link, $keyword );
\r
1390 // Converts keyword into stat link (prepend with YOURLS base URL, append +)
\r
1391 function yourls_statlink( $keyword = '' ) {
\r
1392 $link = YOURLS_SITE . '/' . yourls_sanitize_keyword( $keyword ) . '+';
\r
1393 return yourls_apply_filter( 'yourls_statlink', $link, $keyword );
\r
1396 // Check if we're in API mode. Returns bool
\r
1397 function yourls_is_API() {
\r
1398 if ( defined('YOURLS_API') && YOURLS_API == true )
\r
1403 // Check if we're in Ajax mode. Returns bool
\r
1404 function yourls_is_Ajax() {
\r
1405 if ( defined('YOURLS_AJAX') && YOURLS_AJAX == true )
\r
1410 // Check if we're in GO mode (yourls-go.php). Returns bool
\r
1411 function yourls_is_GO() {
\r
1412 if ( defined('YOURLS_GO') && YOURLS_GO == true )
\r
1417 // Check if we're displaying stats infos (yourls-infos.php). Returns bool
\r
1418 function yourls_is_infos() {
\r
1419 if ( defined('YOURLS_INFOS') && YOURLS_INFOS == true )
\r
1424 // Check if we'll need interface display function (ie not API or redirection)
\r
1425 function yourls_has_interface() {
\r
1426 if( yourls_is_API() or yourls_is_GO() )
\r
1431 // Check if we're in the admin area. Returns bool
\r
1432 function yourls_is_admin() {
\r
1433 if ( defined('YOURLS_ADMIN') && YOURLS_ADMIN == true )
\r
1438 // Check if the server seems to be running on Windows. Not exactly sure how reliable this is.
\r
1439 function yourls_is_windows() {
\r
1440 return defined( 'DIRECTORY_SEPARATOR' ) && DIRECTORY_SEPARATOR == '\\';
\r
1443 // Check if SSL is required. Returns bool.
\r
1444 function yourls_needs_ssl() {
\r
1445 if ( defined('YOURLS_ADMIN_SSL') && YOURLS_ADMIN_SSL == true )
\r
1450 // Return admin link, with SSL preference if applicable.
\r
1451 function yourls_admin_url( $page = '' ) {
\r
1452 $admin = YOURLS_SITE . '/admin/' . $page;
\r
1453 if( yourls_is_ssl() or yourls_needs_ssl() )
\r
1454 $admin = str_replace('http://', 'https://', $admin);
\r
1455 return yourls_apply_filter( 'admin_url', $admin, $page );
\r
1458 // Return YOURLS_SITE, with SSL preference
\r
1459 function yourls_site_url( $echo = true ) {
\r
1460 $site = YOURLS_SITE;
\r
1461 // Do not enforce (checking yourls_need_ssl() ) but check current usage so it won't force SSL on non-admin pages
\r
1462 if( yourls_is_ssl() )
\r
1463 $site = str_replace( 'http://', 'https://', $site );
\r
1464 $site = yourls_apply_filter( 'site_url', $site );
\r
1470 // Check if SSL is used, returns bool. Stolen from WP.
\r
1471 function yourls_is_ssl() {
\r
1473 if ( isset($_SERVER['HTTPS']) ) {
\r
1474 if ( 'on' == strtolower($_SERVER['HTTPS']) )
\r
1476 if ( '1' == $_SERVER['HTTPS'] )
\r
1478 } elseif ( isset($_SERVER['SERVER_PORT']) && ( '443' == $_SERVER['SERVER_PORT'] ) ) {
\r
1481 return yourls_apply_filter( 'is_ssl', $is_ssl );
\r
1485 // Get a remote page <title>, return a string (either title or url)
\r
1486 function yourls_get_remote_title( $url ) {
\r
1487 // Allow plugins to short-circuit the whole function
\r
1488 $pre = yourls_apply_filter( 'shunt_get_remote_title', false, $url );
\r
1489 if ( false !== $pre )
\r
1492 require_once( YOURLS_INC.'/functions-http.php' );
\r
1494 $url = yourls_sanitize_url( $url );
\r
1496 $title = $charset = false;
\r
1498 $content = yourls_get_remote_content( $url );
\r
1500 // If false, return url as title.
\r
1501 // Todo: improve this with temporary title when shorturl_meta available?
\r
1502 if( false === $content )
\r
1505 if( $content !== false ) {
\r
1506 // look for <title>
\r
1507 if ( preg_match('/<title>(.*?)<\/title>/is', $content, $found ) ) {
\r
1508 $title = $found[1];
\r
1512 // look for charset
\r
1513 // <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
\r
1514 if ( preg_match('/<meta[^>]*?charset=([^>]*?)\/?>/is', $content, $found ) ) {
\r
1515 $charset = trim($found[1], '"\' ');
\r
1520 // if title not found, guess if returned content was actually an error message
\r
1521 if( $title == false && strpos( $content, 'Error' ) === 0 ) {
\r
1522 $title = $content;
\r
1525 if( $title == false )
\r
1529 if( !yourls_seems_utf8( $title ) )
\r
1530 $title = utf8_encode( $title );
\r
1533 // Charset conversion. We use @ to remove warnings (mb_ functions are easily bitching about illegal chars)
\r
1534 if( function_exists( 'mb_convert_encoding' ) ) {
\r
1536 $title = @mb_convert_encoding( $title, 'UTF-8', $charset );
\r
1538 $title = @mb_convert_encoding( $title, 'UTF-8' );
\r
1542 // Remove HTML entities
\r
1543 $title = html_entity_decode( $title, ENT_QUOTES, 'UTF-8' );
\r
1545 // Strip out evil things
\r
1546 $title = yourls_sanitize_title( $title );
\r
1548 return yourls_apply_filter( 'get_remote_title', $title, $url );
\r
1551 // Check for maintenance mode that will shortcut everything
\r
1552 function yourls_check_maintenance_mode() {
\r
1554 // TODO: all cases that always display the sites (is_admin but not is_ajax?)
\r
1558 // first case: /user/maintenance.php file
\r
1559 if( file_exists( YOURLS_USERDIR.'/maintenance.php' ) ) {
\r
1560 include( YOURLS_USERDIR.'/maintenance.php' );
\r
1564 // second case: option in DB
\r
1565 if( yourls_get_option( 'maintenance_mode' ) !== false ) {
\r
1566 require_once( YOURLS_INC.'/functions-html.php' );
\r
1567 $title = 'Service temporarily unavailable';
\r
1568 $message = 'Our service is currently undergoing scheduled maintenance.</p>
\r
1569 <p>Things should not last very long, thank you for your patience and please excuse the inconvenience';
\r
1570 yourls_die( $message, $title , 503 );
\r
1575 // Toggle maintenance mode
\r
1576 function yourls_maintenance_mode( $maintenance = true ) {
\r
1577 yourls_update_option( 'maintenance_mode', (bool)$maintenance );
\r
1580 // Quick UA check for mobile devices. Return boolean.
\r
1581 function yourls_is_mobile_device() {
\r
1582 // Strings searched
\r
1584 'android', 'blackberry', 'blazer',
\r
1585 'compal', 'elaine', 'fennec', 'hiptop',
\r
1586 'iemobile', 'iphone', 'ipod', 'ipad',
\r
1587 'iris', 'kindle', 'opera mobi', 'opera mini',
\r
1588 'palm', 'phone', 'pocket', 'psp', 'symbian',
\r
1589 'treo', 'wap', 'windows ce', 'windows phone'
\r
1592 // Current user-agent
\r
1593 $current = strtolower( $_SERVER['HTTP_USER_AGENT'] );
\r
1595 // Check and return
\r
1596 $is_mobile = ( str_replace( $mobiles, '', $current ) != $current );
\r
1597 return yourls_apply_filter( 'is_mobile_device', $is_mobile );
\r
1600 // Get request in YOURLS base (eg in 'http://site.com/yourls/abcd' get 'abdc')
\r
1601 function yourls_get_request() {
\r
1602 // Allow plugins to short-circuit the whole function
\r
1603 $pre = yourls_apply_filter( 'shunt_get_request', false );
\r
1604 if ( false !== $pre )
\r
1607 yourls_do_action( 'pre_get_request' );
\r
1609 // Ignore protocol, www. prefix and extract keyword
\r
1610 $base = str_replace( array( 'https://', 'http://', 'https://www.', 'http://www.' ), '', YOURLS_SITE );
\r
1611 $request = str_replace( $base.'/', '', $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] );
\r
1613 // Strip query string from keyword
\r
1614 $request = current( explode( '?', $request ) );
\r
1616 return yourls_apply_filter( 'get_request', $request );
\r
1619 // Change protocol to match current scheme used (http or https)
\r
1620 function yourls_match_current_protocol( $url, $normal = 'http', $ssl = 'https' ) {
\r
1621 if( yourls_is_ssl() )
\r
1622 $url = str_replace( $normal, $ssl, $url );
\r
1623 return yourls_apply_filter( 'match_current_protocol', $url );
\r
1626 // Fix $_SERVER['REQUEST_URI'] variable for various setups. Stolen from WP.
\r
1627 function yourls_fix_request_uri() {
\r
1629 $default_server_values = array(
\r
1630 'SERVER_SOFTWARE' => '',
\r
1631 'REQUEST_URI' => '',
\r
1633 $_SERVER = array_merge( $default_server_values, $_SERVER );
\r
1635 // Fix for IIS when running with PHP ISAPI
\r
1636 if ( empty( $_SERVER['REQUEST_URI'] ) || ( php_sapi_name() != 'cgi-fcgi' && preg_match( '/^Microsoft-IIS\//', $_SERVER['SERVER_SOFTWARE'] ) ) ) {
\r
1638 // IIS Mod-Rewrite
\r
1639 if ( isset( $_SERVER['HTTP_X_ORIGINAL_URL'] ) ) {
\r
1640 $_SERVER['REQUEST_URI'] = $_SERVER['HTTP_X_ORIGINAL_URL'];
\r
1642 // IIS Isapi_Rewrite
\r
1643 else if ( isset( $_SERVER['HTTP_X_REWRITE_URL'] ) ) {
\r
1644 $_SERVER['REQUEST_URI'] = $_SERVER['HTTP_X_REWRITE_URL'];
\r
1646 // Use ORIG_PATH_INFO if there is no PATH_INFO
\r
1647 if ( !isset( $_SERVER['PATH_INFO'] ) && isset( $_SERVER['ORIG_PATH_INFO'] ) )
\r
1648 $_SERVER['PATH_INFO'] = $_SERVER['ORIG_PATH_INFO'];
\r
1650 // Some IIS + PHP configurations puts the script-name in the path-info (No need to append it twice)
\r
1651 if ( isset( $_SERVER['PATH_INFO'] ) ) {
\r
1652 if ( $_SERVER['PATH_INFO'] == $_SERVER['SCRIPT_NAME'] )
\r
1653 $_SERVER['REQUEST_URI'] = $_SERVER['PATH_INFO'];
\r
1655 $_SERVER['REQUEST_URI'] = $_SERVER['SCRIPT_NAME'] . $_SERVER['PATH_INFO'];
\r
1658 // Append the query string if it exists and isn't null
\r
1659 if ( ! empty( $_SERVER['QUERY_STRING'] ) ) {
\r
1660 $_SERVER['REQUEST_URI'] .= '?' . $_SERVER['QUERY_STRING'];
\r
1666 // Shutdown function, runs just before PHP shuts down execution. Stolen from WP
\r
1667 function yourls_shutdown() {
\r
1668 yourls_do_action( 'shutdown' );
\r