· 10 years ago · Jan 21, 2016, 07:09 PM
1<?php
2/**
3 * These functions can be replaced via plugins. If plugins do not redefine these
4 * functions, then these will be used instead.
5 *
6 * @package WordPress
7 */
8
9if ( !function_exists('wp_set_current_user') ) :
10/**
11 * Changes the current user by ID or name.
12 *
13 * Set $id to null and specify a name if you do not know a user's ID.
14 *
15 * Some WordPress functionality is based on the current user and not based on
16 * the signed in user. Therefore, it opens the ability to edit and perform
17 * actions on users who aren't signed in.
18 *
19 * @since 2.0.3
20 * @global WP_User $current_user The current user object which holds the user data.
21 *
22 * @param int $id User ID
23 * @param string $name User's username
24 * @return WP_User Current user User object
25 */
26function wp_set_current_user($id, $name = '') {
27 global $current_user;
28
29 // If `$id` matches the user who's already current, there's nothing to do.
30 if ( isset( $current_user )
31 && ( $current_user instanceof WP_User )
32 && ( $id == $current_user->ID )
33 && ( null !== $id )
34 ) {
35 return $current_user;
36 }
37
38 $current_user = new WP_User( $id, $name );
39
40 setup_userdata( $current_user->ID );
41
42 /**
43 * Fires after the current user is set.
44 *
45 * @since 2.0.1
46 */
47 do_action( 'set_current_user' );
48
49 return $current_user;
50}
51endif;
52
53if ( !function_exists('wp_get_current_user') ) :
54/**
55 * Retrieve the current user object.
56 *
57 * @since 2.0.3
58 *
59 * @global WP_User $current_user
60 *
61 * @return WP_User Current user WP_User object
62 */
63function wp_get_current_user() {
64 global $current_user;
65
66 get_currentuserinfo();
67
68 return $current_user;
69}
70endif;
71
72if ( !function_exists('get_currentuserinfo') ) :
73/**
74 * Populate global variables with information about the currently logged in user.
75 *
76 * Will set the current user, if the current user is not set. The current user
77 * will be set to the logged-in person. If no user is logged-in, then it will
78 * set the current user to 0, which is invalid and won't have any permissions.
79 *
80 * @since 0.71
81 *
82 * @global WP_User $current_user Checks if the current user is set
83 *
84 * @return false|void False on XML-RPC Request and invalid auth cookie.
85 */
86function get_currentuserinfo() {
87 global $current_user;
88
89 if ( ! empty( $current_user ) ) {
90 if ( $current_user instanceof WP_User )
91 return;
92
93 // Upgrade stdClass to WP_User
94 if ( is_object( $current_user ) && isset( $current_user->ID ) ) {
95 $cur_id = $current_user->ID;
96 $current_user = null;
97 wp_set_current_user( $cur_id );
98 return;
99 }
100
101 // $current_user has a junk value. Force to WP_User with ID 0.
102 $current_user = null;
103 wp_set_current_user( 0 );
104 return false;
105 }
106
107 if ( defined('XMLRPC_REQUEST') && XMLRPC_REQUEST ) {
108 wp_set_current_user( 0 );
109 return false;
110 }
111
112 /**
113 * Filter the current user.
114 *
115 * The default filters use this to determine the current user from the
116 * request's cookies, if available.
117 *
118 * Returning a value of false will effectively short-circuit setting
119 * the current user.
120 *
121 * @since 3.9.0
122 *
123 * @param int|bool $user_id User ID if one has been determined, false otherwise.
124 */
125 $user_id = apply_filters( 'determine_current_user', false );
126 if ( ! $user_id ) {
127 wp_set_current_user( 0 );
128 return false;
129 }
130
131 wp_set_current_user( $user_id );
132}
133endif;
134
135if ( !function_exists('get_userdata') ) :
136/**
137 * Retrieve user info by user ID.
138 *
139 * @since 0.71
140 *
141 * @param int $user_id User ID
142 * @return WP_User|false WP_User object on success, false on failure.
143 */
144function get_userdata( $user_id ) {
145 return get_user_by( 'id', $user_id );
146}
147endif;
148
149if ( !function_exists('get_user_by') ) :
150/**
151 * Retrieve user info by a given field
152 *
153 * @since 2.8.0
154 * @since 4.4.0 Added 'ID' as an alias of 'id' for the `$field` parameter.
155 *
156 * @param string $field The field to retrieve the user with. id | ID | slug | email | login.
157 * @param int|string $value A value for $field. A user ID, slug, email address, or login name.
158 * @return WP_User|false WP_User object on success, false on failure.
159 */
160function get_user_by( $field, $value ) {
161 $userdata = WP_User::get_data_by( $field, $value );
162
163 if ( !$userdata )
164 return false;
165
166 $user = new WP_User;
167 $user->init( $userdata );
168
169 return $user;
170}
171endif;
172
173if ( !function_exists('cache_users') ) :
174/**
175 * Retrieve info for user lists to prevent multiple queries by get_userdata()
176 *
177 * @since 3.0.0
178 *
179 * @global wpdb $wpdb WordPress database abstraction object.
180 *
181 * @param array $user_ids User ID numbers list
182 */
183function cache_users( $user_ids ) {
184 global $wpdb;
185
186 $clean = _get_non_cached_ids( $user_ids, 'users' );
187
188 if ( empty( $clean ) )
189 return;
190
191 $list = implode( ',', $clean );
192
193 $users = $wpdb->get_results( "SELECT * FROM $wpdb->users WHERE ID IN ($list)" );
194
195 $ids = array();
196 foreach ( $users as $user ) {
197 update_user_caches( $user );
198 $ids[] = $user->ID;
199 }
200 update_meta_cache( 'user', $ids );
201}
202endif;
203
204if ( !function_exists( 'wp_mail' ) ) :
205/**
206 * Send mail, similar to PHP's mail
207 *
208 * A true return value does not automatically mean that the user received the
209 * email successfully. It just only means that the method used was able to
210 * process the request without any errors.
211 *
212 * Using the two 'wp_mail_from' and 'wp_mail_from_name' hooks allow from
213 * creating a from address like 'Name <email@address.com>' when both are set. If
214 * just 'wp_mail_from' is set, then just the email address will be used with no
215 * name.
216 *
217 * The default content type is 'text/plain' which does not allow using HTML.
218 * However, you can set the content type of the email by using the
219 * 'wp_mail_content_type' filter.
220 *
221 * The default charset is based on the charset used on the blog. The charset can
222 * be set using the 'wp_mail_charset' filter.
223 *
224 * @since 1.2.1
225 *
226 * @global PHPMailer $phpmailer
227 *
228 * @param string|array $to Array or comma-separated list of email addresses to send message.
229 * @param string $subject Email subject
230 * @param string $message Message contents
231 * @param string|array $headers Optional. Additional headers.
232 * @param string|array $attachments Optional. Files to attach.
233 * @return bool Whether the email contents were sent successfully.
234 */
235function wp_mail( $to, $subject, $message, $headers = '', $attachments = array() ) {
236 // Compact the input, apply the filters, and extract them back out
237
238 /**
239 * Filter the wp_mail() arguments.
240 *
241 * @since 2.2.0
242 *
243 * @param array $args A compacted array of wp_mail() arguments, including the "to" email,
244 * subject, message, headers, and attachments values.
245 */
246 $atts = apply_filters( 'wp_mail', compact( 'to', 'subject', 'message', 'headers', 'attachments' ) );
247
248 if ( isset( $atts['to'] ) ) {
249 $to = $atts['to'];
250 }
251
252 if ( isset( $atts['subject'] ) ) {
253 $subject = $atts['subject'];
254 }
255
256 if ( isset( $atts['message'] ) ) {
257 $message = $atts['message'];
258 }
259
260 if ( isset( $atts['headers'] ) ) {
261 $headers = $atts['headers'];
262 }
263
264 if ( isset( $atts['attachments'] ) ) {
265 $attachments = $atts['attachments'];
266 }
267
268 if ( ! is_array( $attachments ) ) {
269 $attachments = explode( "\n", str_replace( "\r\n", "\n", $attachments ) );
270 }
271 global $phpmailer;
272
273 // (Re)create it, if it's gone missing
274 if ( ! ( $phpmailer instanceof PHPMailer ) ) {
275 require_once ABSPATH . WPINC . '/class-phpmailer.php';
276 require_once ABSPATH . WPINC . '/class-smtp.php';
277 $phpmailer = new PHPMailer( true );
278 }
279
280 // Headers
281 if ( empty( $headers ) ) {
282 $headers = array();
283 } else {
284 if ( !is_array( $headers ) ) {
285 // Explode the headers out, so this function can take both
286 // string headers and an array of headers.
287 $tempheaders = explode( "\n", str_replace( "\r\n", "\n", $headers ) );
288 } else {
289 $tempheaders = $headers;
290 }
291 $headers = array();
292 $cc = array();
293 $bcc = array();
294
295 // If it's actually got contents
296 if ( !empty( $tempheaders ) ) {
297 // Iterate through the raw headers
298 foreach ( (array) $tempheaders as $header ) {
299 if ( strpos($header, ':') === false ) {
300 if ( false !== stripos( $header, 'boundary=' ) ) {
301 $parts = preg_split('/boundary=/i', trim( $header ) );
302 $boundary = trim( str_replace( array( "'", '"' ), '', $parts[1] ) );
303 }
304 continue;
305 }
306 // Explode them out
307 list( $name, $content ) = explode( ':', trim( $header ), 2 );
308
309 // Cleanup crew
310 $name = trim( $name );
311 $content = trim( $content );
312
313 switch ( strtolower( $name ) ) {
314 // Mainly for legacy -- process a From: header if it's there
315 case 'from':
316 $bracket_pos = strpos( $content, '<' );
317 if ( $bracket_pos !== false ) {
318 // Text before the bracketed email is the "From" name.
319 if ( $bracket_pos > 0 ) {
320 $from_name = substr( $content, 0, $bracket_pos - 1 );
321 $from_name = str_replace( '"', '', $from_name );
322 $from_name = trim( $from_name );
323 }
324
325 $from_email = substr( $content, $bracket_pos + 1 );
326 $from_email = str_replace( '>', '', $from_email );
327 $from_email = trim( $from_email );
328
329 // Avoid setting an empty $from_email.
330 } elseif ( '' !== trim( $content ) ) {
331 $from_email = trim( $content );
332 }
333 break;
334 case 'content-type':
335 if ( strpos( $content, ';' ) !== false ) {
336 list( $type, $charset_content ) = explode( ';', $content );
337 $content_type = trim( $type );
338 if ( false !== stripos( $charset_content, 'charset=' ) ) {
339 $charset = trim( str_replace( array( 'charset=', '"' ), '', $charset_content ) );
340 } elseif ( false !== stripos( $charset_content, 'boundary=' ) ) {
341 $boundary = trim( str_replace( array( 'BOUNDARY=', 'boundary=', '"' ), '', $charset_content ) );
342 $charset = '';
343 }
344
345 // Avoid setting an empty $content_type.
346 } elseif ( '' !== trim( $content ) ) {
347 $content_type = trim( $content );
348 }
349 break;
350 case 'cc':
351 $cc = array_merge( (array) $cc, explode( ',', $content ) );
352 break;
353 case 'bcc':
354 $bcc = array_merge( (array) $bcc, explode( ',', $content ) );
355 break;
356 default:
357 // Add it to our grand headers array
358 $headers[trim( $name )] = trim( $content );
359 break;
360 }
361 }
362 }
363 }
364
365 // Empty out the values that may be set
366 $phpmailer->ClearAllRecipients();
367 $phpmailer->ClearAttachments();
368 $phpmailer->ClearCustomHeaders();
369 $phpmailer->ClearReplyTos();
370
371 // From email and name
372 // If we don't have a name from the input headers
373 if ( !isset( $from_name ) )
374 $from_name = 'WordPress';
375
376 /* If we don't have an email from the input headers default to wordpress@$sitename
377 * Some hosts will block outgoing mail from this address if it doesn't exist but
378 * there's no easy alternative. Defaulting to admin_email might appear to be another
379 * option but some hosts may refuse to relay mail from an unknown domain. See
380 * https://core.trac.wordpress.org/ticket/5007.
381 */
382
383 if ( !isset( $from_email ) ) {
384 // Get the site domain and get rid of www.
385 $sitename = strtolower( $_SERVER['SERVER_NAME'] );
386 if ( substr( $sitename, 0, 4 ) == 'www.' ) {
387 $sitename = substr( $sitename, 4 );
388 }
389
390 $from_email = 'wordpress@' . $sitename;
391 }
392
393 /**
394 * Filter the email address to send from.
395 *
396 * @since 2.2.0
397 *
398 * @param string $from_email Email address to send from.
399 */
400 $phpmailer->From = apply_filters( 'wp_mail_from', $from_email );
401
402 /**
403 * Filter the name to associate with the "from" email address.
404 *
405 * @since 2.3.0
406 *
407 * @param string $from_name Name associated with the "from" email address.
408 */
409 $phpmailer->FromName = apply_filters( 'wp_mail_from_name', $from_name );
410
411 // Set destination addresses
412 if ( !is_array( $to ) )
413 $to = explode( ',', $to );
414
415 foreach ( (array) $to as $recipient ) {
416 try {
417 // Break $recipient into name and address parts if in the format "Foo <bar@baz.com>"
418 $recipient_name = '';
419 if ( preg_match( '/(.*)<(.+)>/', $recipient, $matches ) ) {
420 if ( count( $matches ) == 3 ) {
421 $recipient_name = $matches[1];
422 $recipient = $matches[2];
423 }
424 }
425 $phpmailer->AddAddress( $recipient, $recipient_name);
426 } catch ( phpmailerException $e ) {
427 continue;
428 }
429 }
430
431 // Set mail's subject and body
432 $phpmailer->Subject = $subject;
433 $phpmailer->Body = $message;
434
435 // Add any CC and BCC recipients
436 if ( !empty( $cc ) ) {
437 foreach ( (array) $cc as $recipient ) {
438 try {
439 // Break $recipient into name and address parts if in the format "Foo <bar@baz.com>"
440 $recipient_name = '';
441 if ( preg_match( '/(.*)<(.+)>/', $recipient, $matches ) ) {
442 if ( count( $matches ) == 3 ) {
443 $recipient_name = $matches[1];
444 $recipient = $matches[2];
445 }
446 }
447 $phpmailer->AddCc( $recipient, $recipient_name );
448 } catch ( phpmailerException $e ) {
449 continue;
450 }
451 }
452 }
453
454 if ( !empty( $bcc ) ) {
455 foreach ( (array) $bcc as $recipient) {
456 try {
457 // Break $recipient into name and address parts if in the format "Foo <bar@baz.com>"
458 $recipient_name = '';
459 if ( preg_match( '/(.*)<(.+)>/', $recipient, $matches ) ) {
460 if ( count( $matches ) == 3 ) {
461 $recipient_name = $matches[1];
462 $recipient = $matches[2];
463 }
464 }
465 $phpmailer->AddBcc( $recipient, $recipient_name );
466 } catch ( phpmailerException $e ) {
467 continue;
468 }
469 }
470 }
471
472 // Set to use PHP's mail()
473 $phpmailer->IsMail();
474
475 // Set Content-Type and charset
476 // If we don't have a content-type from the input headers
477 if ( !isset( $content_type ) )
478 $content_type = 'text/plain';
479
480 /**
481 * Filter the wp_mail() content type.
482 *
483 * @since 2.3.0
484 *
485 * @param string $content_type Default wp_mail() content type.
486 */
487 $content_type = apply_filters( 'wp_mail_content_type', $content_type );
488
489 $phpmailer->ContentType = $content_type;
490
491 // Set whether it's plaintext, depending on $content_type
492 if ( 'text/html' == $content_type )
493 $phpmailer->IsHTML( true );
494
495 // If we don't have a charset from the input headers
496 if ( !isset( $charset ) )
497 $charset = get_bloginfo( 'charset' );
498
499 // Set the content-type and charset
500
501 /**
502 * Filter the default wp_mail() charset.
503 *
504 * @since 2.3.0
505 *
506 * @param string $charset Default email charset.
507 */
508 $phpmailer->CharSet = apply_filters( 'wp_mail_charset', $charset );
509
510 // Set custom headers
511 if ( !empty( $headers ) ) {
512 foreach ( (array) $headers as $name => $content ) {
513 $phpmailer->AddCustomHeader( sprintf( '%1$s: %2$s', $name, $content ) );
514 }
515
516 if ( false !== stripos( $content_type, 'multipart' ) && ! empty($boundary) )
517 $phpmailer->AddCustomHeader( sprintf( "Content-Type: %s;\n\t boundary=\"%s\"", $content_type, $boundary ) );
518 }
519
520 if ( !empty( $attachments ) ) {
521 foreach ( $attachments as $attachment ) {
522 try {
523 $phpmailer->AddAttachment($attachment);
524 } catch ( phpmailerException $e ) {
525 continue;
526 }
527 }
528 }
529
530 /**
531 * Fires after PHPMailer is initialized.
532 *
533 * @since 2.2.0
534 *
535 * @param PHPMailer &$phpmailer The PHPMailer instance, passed by reference.
536 */
537 do_action_ref_array( 'phpmailer_init', array( &$phpmailer ) );
538
539 // Send!
540 try {
541 return $phpmailer->Send();
542 } catch ( phpmailerException $e ) {
543
544 $mail_error_data = compact( $to, $subject, $message, $headers, $attachments );
545
546 /**
547 * Fires after a phpmailerException is caught.
548 *
549 * @since 4.4.0
550 *
551 * @param WP_Error $error A WP_Error object with the phpmailerException code, message, and an array
552 * containing the mail recipient, subject, message, headers, and attachments.
553 */
554 do_action( 'wp_mail_failed', new WP_Error( $e->getCode(), $e->getMessage(), $mail_error_data ) );
555
556 return false;
557 }
558}
559endif;
560
561if ( !function_exists('wp_authenticate') ) :
562/**
563 * Checks a user's login information and logs them in if it checks out.
564 *
565 * @since 2.5.0
566 *
567 * @param string $username User's username
568 * @param string $password User's password
569 * @return WP_User|WP_Error WP_User object if login successful, otherwise WP_Error object.
570 */
571function wp_authenticate($username, $password) {
572 $username = sanitize_user($username);
573 $password = trim($password);
574
575 /**
576 * Filter the user to authenticate.
577 *
578 * If a non-null value is passed, the filter will effectively short-circuit
579 * authentication, returning an error instead.
580 *
581 * @since 2.8.0
582 *
583 * @param null|WP_User $user User to authenticate.
584 * @param string $username User login.
585 * @param string $password User password
586 */
587 $user = apply_filters( 'authenticate', null, $username, $password );
588
589 if ( $user == null ) {
590 // TODO what should the error message be? (Or would these even happen?)
591 // Only needed if all authentication handlers fail to return anything.
592 $user = new WP_Error('authentication_failed', __('<strong>ERROR</strong>: Invalid username or incorrect password.'));
593 }
594
595 $ignore_codes = array('empty_username', 'empty_password');
596
597 if (is_wp_error($user) && !in_array($user->get_error_code(), $ignore_codes) ) {
598 /**
599 * Fires after a user login has failed.
600 *
601 * @since 2.5.0
602 *
603 * @param string $username User login.
604 */
605 do_action( 'wp_login_failed', $username );
606 }
607
608 return $user;
609}
610endif;
611
612if ( !function_exists('wp_logout') ) :
613/**
614 * Log the current user out.
615 *
616 * @since 2.5.0
617 */
618function wp_logout() {
619 wp_destroy_current_session();
620 wp_clear_auth_cookie();
621
622 /**
623 * Fires after a user is logged-out.
624 *
625 * @since 1.5.0
626 */
627 do_action( 'wp_logout' );
628}
629endif;
630
631if ( !function_exists('wp_validate_auth_cookie') ) :
632/**
633 * Validates authentication cookie.
634 *
635 * The checks include making sure that the authentication cookie is set and
636 * pulling in the contents (if $cookie is not used).
637 *
638 * Makes sure the cookie is not expired. Verifies the hash in cookie is what is
639 * should be and compares the two.
640 *
641 * @since 2.5.0
642 *
643 * @global int $login_grace_period
644 *
645 * @param string $cookie Optional. If used, will validate contents instead of cookie's
646 * @param string $scheme Optional. The cookie scheme to use: auth, secure_auth, or logged_in
647 * @return false|int False if invalid cookie, User ID if valid.
648 */
649function wp_validate_auth_cookie($cookie = '', $scheme = '') {
650 if ( ! $cookie_elements = wp_parse_auth_cookie($cookie, $scheme) ) {
651 /**
652 * Fires if an authentication cookie is malformed.
653 *
654 * @since 2.7.0
655 *
656 * @param string $cookie Malformed auth cookie.
657 * @param string $scheme Authentication scheme. Values include 'auth', 'secure_auth',
658 * or 'logged_in'.
659 */
660 do_action( 'auth_cookie_malformed', $cookie, $scheme );
661 return false;
662 }
663
664 $scheme = $cookie_elements['scheme'];
665 $username = $cookie_elements['username'];
666 $hmac = $cookie_elements['hmac'];
667 $token = $cookie_elements['token'];
668 $expired = $expiration = $cookie_elements['expiration'];
669
670 // Allow a grace period for POST and AJAX requests
671 if ( defined('DOING_AJAX') || 'POST' == $_SERVER['REQUEST_METHOD'] ) {
672 $expired += HOUR_IN_SECONDS;
673 }
674
675 // Quick check to see if an honest cookie has expired
676 if ( $expired < time() ) {
677 /**
678 * Fires once an authentication cookie has expired.
679 *
680 * @since 2.7.0
681 *
682 * @param array $cookie_elements An array of data for the authentication cookie.
683 */
684 do_action( 'auth_cookie_expired', $cookie_elements );
685 return false;
686 }
687
688 $user = get_user_by('login', $username);
689 if ( ! $user ) {
690 /**
691 * Fires if a bad username is entered in the user authentication process.
692 *
693 * @since 2.7.0
694 *
695 * @param array $cookie_elements An array of data for the authentication cookie.
696 */
697 do_action( 'auth_cookie_bad_username', $cookie_elements );
698 return false;
699 }
700
701 $pass_frag = substr($user->user_pass, 8, 4);
702
703 $key = wp_hash( $username . '|' . $pass_frag . '|' . $expiration . '|' . $token, $scheme );
704
705 // If ext/hash is not present, compat.php's hash_hmac() does not support sha256.
706 $algo = function_exists( 'hash' ) ? 'sha256' : 'sha1';
707 $hash = hash_hmac( $algo, $username . '|' . $expiration . '|' . $token, $key );
708
709 if ( ! hash_equals( $hash, $hmac ) ) {
710 /**
711 * Fires if a bad authentication cookie hash is encountered.
712 *
713 * @since 2.7.0
714 *
715 * @param array $cookie_elements An array of data for the authentication cookie.
716 */
717 do_action( 'auth_cookie_bad_hash', $cookie_elements );
718 return false;
719 }
720
721 $manager = WP_Session_Tokens::get_instance( $user->ID );
722 if ( ! $manager->verify( $token ) ) {
723 do_action( 'auth_cookie_bad_session_token', $cookie_elements );
724 return false;
725 }
726
727 // AJAX/POST grace period set above
728 if ( $expiration < time() ) {
729 $GLOBALS['login_grace_period'] = 1;
730 }
731
732 /**
733 * Fires once an authentication cookie has been validated.
734 *
735 * @since 2.7.0
736 *
737 * @param array $cookie_elements An array of data for the authentication cookie.
738 * @param WP_User $user User object.
739 */
740 do_action( 'auth_cookie_valid', $cookie_elements, $user );
741
742 return $user->ID;
743}
744endif;
745
746if ( !function_exists('wp_generate_auth_cookie') ) :
747/**
748 * Generate authentication cookie contents.
749 *
750 * @since 2.5.0
751 *
752 * @param int $user_id User ID
753 * @param int $expiration Cookie expiration in seconds
754 * @param string $scheme Optional. The cookie scheme to use: auth, secure_auth, or logged_in
755 * @param string $token User's session token to use for this cookie
756 * @return string Authentication cookie contents. Empty string if user does not exist.
757 */
758function wp_generate_auth_cookie( $user_id, $expiration, $scheme = 'auth', $token = '' ) {
759 $user = get_userdata($user_id);
760 if ( ! $user ) {
761 return '';
762 }
763
764 if ( ! $token ) {
765 $manager = WP_Session_Tokens::get_instance( $user_id );
766 $token = $manager->create( $expiration );
767 }
768
769 $pass_frag = substr($user->user_pass, 8, 4);
770
771 $key = wp_hash( $user->user_login . '|' . $pass_frag . '|' . $expiration . '|' . $token, $scheme );
772
773 // If ext/hash is not present, compat.php's hash_hmac() does not support sha256.
774 $algo = function_exists( 'hash' ) ? 'sha256' : 'sha1';
775 $hash = hash_hmac( $algo, $user->user_login . '|' . $expiration . '|' . $token, $key );
776
777 $cookie = $user->user_login . '|' . $expiration . '|' . $token . '|' . $hash;
778
779 /**
780 * Filter the authentication cookie.
781 *
782 * @since 2.5.0
783 *
784 * @param string $cookie Authentication cookie.
785 * @param int $user_id User ID.
786 * @param int $expiration Authentication cookie expiration in seconds.
787 * @param string $scheme Cookie scheme used. Accepts 'auth', 'secure_auth', or 'logged_in'.
788 * @param string $token User's session token used.
789 */
790 return apply_filters( 'auth_cookie', $cookie, $user_id, $expiration, $scheme, $token );
791}
792endif;
793
794if ( !function_exists('wp_parse_auth_cookie') ) :
795/**
796 * Parse a cookie into its components
797 *
798 * @since 2.7.0
799 *
800 * @param string $cookie
801 * @param string $scheme Optional. The cookie scheme to use: auth, secure_auth, or logged_in
802 * @return array|false Authentication cookie components
803 */
804function wp_parse_auth_cookie($cookie = '', $scheme = '') {
805 if ( empty($cookie) ) {
806 switch ($scheme){
807 case 'auth':
808 $cookie_name = AUTH_COOKIE;
809 break;
810 case 'secure_auth':
811 $cookie_name = SECURE_AUTH_COOKIE;
812 break;
813 case "logged_in":
814 $cookie_name = LOGGED_IN_COOKIE;
815 break;
816 default:
817 if ( is_ssl() ) {
818 $cookie_name = SECURE_AUTH_COOKIE;
819 $scheme = 'secure_auth';
820 } else {
821 $cookie_name = AUTH_COOKIE;
822 $scheme = 'auth';
823 }
824 }
825
826 if ( empty($_COOKIE[$cookie_name]) )
827 return false;
828 $cookie = $_COOKIE[$cookie_name];
829 }
830
831 $cookie_elements = explode('|', $cookie);
832 if ( count( $cookie_elements ) !== 4 ) {
833 return false;
834 }
835
836 list( $username, $expiration, $token, $hmac ) = $cookie_elements;
837
838 return compact( 'username', 'expiration', 'token', 'hmac', 'scheme' );
839}
840endif;
841
842if ( !function_exists('wp_set_auth_cookie') ) :
843/**
844 * Sets the authentication cookies based on user ID.
845 *
846 * The $remember parameter increases the time that the cookie will be kept. The
847 * default the cookie is kept without remembering is two days. When $remember is
848 * set, the cookies will be kept for 14 days or two weeks.
849 *
850 * @since 2.5.0
851 * @since 4.3.0 Added the `$token` parameter.
852 *
853 * @param int $user_id User ID
854 * @param bool $remember Whether to remember the user
855 * @param mixed $secure Whether the admin cookies should only be sent over HTTPS.
856 * Default is_ssl().
857 * @param string $token Optional. User's session token to use for this cookie.
858 */
859function wp_set_auth_cookie( $user_id, $remember = false, $secure = '', $token = '' ) {
860 if ( $remember ) {
861 /**
862 * Filter the duration of the authentication cookie expiration period.
863 *
864 * @since 2.8.0
865 *
866 * @param int $length Duration of the expiration period in seconds.
867 * @param int $user_id User ID.
868 * @param bool $remember Whether to remember the user login. Default false.
869 */
870 $expiration = time() + apply_filters( 'auth_cookie_expiration', 14 * DAY_IN_SECONDS, $user_id, $remember );
871
872 /*
873 * Ensure the browser will continue to send the cookie after the expiration time is reached.
874 * Needed for the login grace period in wp_validate_auth_cookie().
875 */
876 $expire = $expiration + ( 12 * HOUR_IN_SECONDS );
877 } else {
878 /** This filter is documented in wp-includes/pluggable.php */
879 $expiration = time() + apply_filters( 'auth_cookie_expiration', 2 * DAY_IN_SECONDS, $user_id, $remember );
880 $expire = 0;
881 }
882
883 if ( '' === $secure ) {
884 $secure = is_ssl();
885 }
886
887 // Frontend cookie is secure when the auth cookie is secure and the site's home URL is forced HTTPS.
888 $secure_logged_in_cookie = $secure && 'https' === parse_url( get_option( 'home' ), PHP_URL_SCHEME );
889
890 /**
891 * Filter whether the connection is secure.
892 *
893 * @since 3.1.0
894 *
895 * @param bool $secure Whether the connection is secure.
896 * @param int $user_id User ID.
897 */
898 $secure = apply_filters( 'secure_auth_cookie', $secure, $user_id );
899
900 /**
901 * Filter whether to use a secure cookie when logged-in.
902 *
903 * @since 3.1.0
904 *
905 * @param bool $secure_logged_in_cookie Whether to use a secure cookie when logged-in.
906 * @param int $user_id User ID.
907 * @param bool $secure Whether the connection is secure.
908 */
909 $secure_logged_in_cookie = apply_filters( 'secure_logged_in_cookie', $secure_logged_in_cookie, $user_id, $secure );
910
911 if ( $secure ) {
912 $auth_cookie_name = SECURE_AUTH_COOKIE;
913 $scheme = 'secure_auth';
914 } else {
915 $auth_cookie_name = AUTH_COOKIE;
916 $scheme = 'auth';
917 }
918
919 if ( '' === $token ) {
920 $manager = WP_Session_Tokens::get_instance( $user_id );
921 $token = $manager->create( $expiration );
922 }
923
924 $auth_cookie = wp_generate_auth_cookie( $user_id, $expiration, $scheme, $token );
925 $logged_in_cookie = wp_generate_auth_cookie( $user_id, $expiration, 'logged_in', $token );
926
927 /**
928 * Fires immediately before the authentication cookie is set.
929 *
930 * @since 2.5.0
931 *
932 * @param string $auth_cookie Authentication cookie.
933 * @param int $expire Login grace period in seconds. Default 43,200 seconds, or 12 hours.
934 * @param int $expiration Duration in seconds the authentication cookie should be valid.
935 * Default 1,209,600 seconds, or 14 days.
936 * @param int $user_id User ID.
937 * @param string $scheme Authentication scheme. Values include 'auth', 'secure_auth', or 'logged_in'.
938 */
939 do_action( 'set_auth_cookie', $auth_cookie, $expire, $expiration, $user_id, $scheme );
940
941 /**
942 * Fires immediately before the secure authentication cookie is set.
943 *
944 * @since 2.6.0
945 *
946 * @param string $logged_in_cookie The logged-in cookie.
947 * @param int $expire Login grace period in seconds. Default 43,200 seconds, or 12 hours.
948 * @param int $expiration Duration in seconds the authentication cookie should be valid.
949 * Default 1,209,600 seconds, or 14 days.
950 * @param int $user_id User ID.
951 * @param string $scheme Authentication scheme. Default 'logged_in'.
952 */
953 do_action( 'set_logged_in_cookie', $logged_in_cookie, $expire, $expiration, $user_id, 'logged_in' );
954
955 setcookie($auth_cookie_name, $auth_cookie, $expire, PLUGINS_COOKIE_PATH, COOKIE_DOMAIN, $secure, true);
956 setcookie($auth_cookie_name, $auth_cookie, $expire, ADMIN_COOKIE_PATH, COOKIE_DOMAIN, $secure, true);
957 setcookie(LOGGED_IN_COOKIE, $logged_in_cookie, $expire, COOKIEPATH, COOKIE_DOMAIN, $secure_logged_in_cookie, true);
958 if ( COOKIEPATH != SITECOOKIEPATH )
959 setcookie(LOGGED_IN_COOKIE, $logged_in_cookie, $expire, SITECOOKIEPATH, COOKIE_DOMAIN, $secure_logged_in_cookie, true);
960}
961endif;
962
963if ( !function_exists('wp_clear_auth_cookie') ) :
964/**
965 * Removes all of the cookies associated with authentication.
966 *
967 * @since 2.5.0
968 */
969function wp_clear_auth_cookie() {
970 /**
971 * Fires just before the authentication cookies are cleared.
972 *
973 * @since 2.7.0
974 */
975 do_action( 'clear_auth_cookie' );
976
977 setcookie( AUTH_COOKIE, ' ', time() - YEAR_IN_SECONDS, ADMIN_COOKIE_PATH, COOKIE_DOMAIN );
978 setcookie( SECURE_AUTH_COOKIE, ' ', time() - YEAR_IN_SECONDS, ADMIN_COOKIE_PATH, COOKIE_DOMAIN );
979 setcookie( AUTH_COOKIE, ' ', time() - YEAR_IN_SECONDS, PLUGINS_COOKIE_PATH, COOKIE_DOMAIN );
980 setcookie( SECURE_AUTH_COOKIE, ' ', time() - YEAR_IN_SECONDS, PLUGINS_COOKIE_PATH, COOKIE_DOMAIN );
981 setcookie( LOGGED_IN_COOKIE, ' ', time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN );
982 setcookie( LOGGED_IN_COOKIE, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN );
983
984 // Old cookies
985 setcookie( AUTH_COOKIE, ' ', time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN );
986 setcookie( AUTH_COOKIE, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN );
987 setcookie( SECURE_AUTH_COOKIE, ' ', time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN );
988 setcookie( SECURE_AUTH_COOKIE, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN );
989
990 // Even older cookies
991 setcookie( USER_COOKIE, ' ', time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN );
992 setcookie( PASS_COOKIE, ' ', time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN );
993 setcookie( USER_COOKIE, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN );
994 setcookie( PASS_COOKIE, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN );
995}
996endif;
997
998if ( !function_exists('is_user_logged_in') ) :
999/**
1000 * Checks if the current visitor is a logged in user.
1001 *
1002 * @since 2.0.0
1003 *
1004 * @return bool True if user is logged in, false if not logged in.
1005 */
1006function is_user_logged_in() {
1007 $user = wp_get_current_user();
1008
1009 return $user->exists();
1010}
1011endif;
1012
1013if ( !function_exists('auth_redirect') ) :
1014/**
1015 * Checks if a user is logged in, if not it redirects them to the login page.
1016 *
1017 * @since 1.5.0
1018 */
1019function auth_redirect() {
1020 // Checks if a user is logged in, if not redirects them to the login page
1021
1022 $secure = ( is_ssl() || force_ssl_admin() );
1023
1024 /**
1025 * Filter whether to use a secure authentication redirect.
1026 *
1027 * @since 3.1.0
1028 *
1029 * @param bool $secure Whether to use a secure authentication redirect. Default false.
1030 */
1031 $secure = apply_filters( 'secure_auth_redirect', $secure );
1032
1033 // If https is required and request is http, redirect
1034 if ( $secure && !is_ssl() && false !== strpos($_SERVER['REQUEST_URI'], 'wp-admin') ) {
1035 if ( 0 === strpos( $_SERVER['REQUEST_URI'], 'http' ) ) {
1036 wp_redirect( set_url_scheme( $_SERVER['REQUEST_URI'], 'https' ) );
1037 exit();
1038 } else {
1039 wp_redirect( 'https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] );
1040 exit();
1041 }
1042 }
1043
1044 if ( is_user_admin() ) {
1045 $scheme = 'logged_in';
1046 } else {
1047 /**
1048 * Filter the authentication redirect scheme.
1049 *
1050 * @since 2.9.0
1051 *
1052 * @param string $scheme Authentication redirect scheme. Default empty.
1053 */
1054 $scheme = apply_filters( 'auth_redirect_scheme', '' );
1055 }
1056
1057 if ( $user_id = wp_validate_auth_cookie( '', $scheme) ) {
1058 /**
1059 * Fires before the authentication redirect.
1060 *
1061 * @since 2.8.0
1062 *
1063 * @param int $user_id User ID.
1064 */
1065 do_action( 'auth_redirect', $user_id );
1066
1067 // If the user wants ssl but the session is not ssl, redirect.
1068 if ( !$secure && get_user_option('use_ssl', $user_id) && false !== strpos($_SERVER['REQUEST_URI'], 'wp-admin') ) {
1069 if ( 0 === strpos( $_SERVER['REQUEST_URI'], 'http' ) ) {
1070 wp_redirect( set_url_scheme( $_SERVER['REQUEST_URI'], 'https' ) );
1071 exit();
1072 } else {
1073 wp_redirect( 'https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] );
1074 exit();
1075 }
1076 }
1077
1078 return; // The cookie is good so we're done
1079 }
1080
1081 // The cookie is no good so force login
1082 nocache_headers();
1083
1084 $redirect = ( strpos( $_SERVER['REQUEST_URI'], '/options.php' ) && wp_get_referer() ) ? wp_get_referer() : set_url_scheme( 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] );
1085
1086 $login_url = wp_login_url($redirect, true);
1087
1088 wp_redirect($login_url);
1089 exit();
1090}
1091endif;
1092
1093if ( !function_exists('check_admin_referer') ) :
1094/**
1095 * Makes sure that a user was referred from another admin page.
1096 *
1097 * To avoid security exploits.
1098 *
1099 * @since 1.2.0
1100 *
1101 * @param int|string $action Action nonce.
1102 * @param string $query_arg Optional. Key to check for nonce in `$_REQUEST` (since 2.5).
1103 * Default '_wpnonce'.
1104 * @return false|int False if the nonce is invalid, 1 if the nonce is valid and generated between
1105 * 0-12 hours ago, 2 if the nonce is valid and generated between 12-24 hours ago.
1106 */
1107function check_admin_referer( $action = -1, $query_arg = '_wpnonce' ) {
1108 if ( -1 == $action )
1109 _doing_it_wrong( __FUNCTION__, __( 'You should specify a nonce action to be verified by using the first parameter.' ), '3.2' );
1110
1111 $adminurl = strtolower(admin_url());
1112 $referer = strtolower(wp_get_referer());
1113 $result = isset($_REQUEST[$query_arg]) ? wp_verify_nonce($_REQUEST[$query_arg], $action) : false;
1114
1115 /**
1116 * Fires once the admin request has been validated or not.
1117 *
1118 * @since 1.5.1
1119 *
1120 * @param string $action The nonce action.
1121 * @param false|int $result False if the nonce is invalid, 1 if the nonce is valid and generated between
1122 * 0-12 hours ago, 2 if the nonce is valid and generated between 12-24 hours ago.
1123 */
1124 do_action( 'check_admin_referer', $action, $result );
1125
1126 if ( ! $result && ! ( -1 == $action && strpos( $referer, $adminurl ) === 0 ) ) {
1127 wp_nonce_ays( $action );
1128 die();
1129 }
1130
1131 return $result;
1132}
1133endif;
1134
1135if ( !function_exists('check_ajax_referer') ) :
1136/**
1137 * Verifies the AJAX request to prevent processing requests external of the blog.
1138 *
1139 * @since 2.0.3
1140 *
1141 * @param int|string $action Action nonce.
1142 * @param false|string $query_arg Optional. Key to check for the nonce in `$_REQUEST` (since 2.5). If false,
1143 * `$_REQUEST` values will be evaluated for '_ajax_nonce', and '_wpnonce'
1144 * (in that order). Default false.
1145 * @param bool $die Optional. Whether to die early when the nonce cannot be verified.
1146 * Default true.
1147 * @return false|int False if the nonce is invalid, 1 if the nonce is valid and generated between
1148 * 0-12 hours ago, 2 if the nonce is valid and generated between 12-24 hours ago.
1149 */
1150function check_ajax_referer( $action = -1, $query_arg = false, $die = true ) {
1151 $nonce = '';
1152
1153 if ( $query_arg && isset( $_REQUEST[ $query_arg ] ) )
1154 $nonce = $_REQUEST[ $query_arg ];
1155 elseif ( isset( $_REQUEST['_ajax_nonce'] ) )
1156 $nonce = $_REQUEST['_ajax_nonce'];
1157 elseif ( isset( $_REQUEST['_wpnonce'] ) )
1158 $nonce = $_REQUEST['_wpnonce'];
1159
1160 $result = wp_verify_nonce( $nonce, $action );
1161
1162 /**
1163 * Fires once the AJAX request has been validated or not.
1164 *
1165 * @since 2.1.0
1166 *
1167 * @param string $action The AJAX nonce action.
1168 * @param false|int $result False if the nonce is invalid, 1 if the nonce is valid and generated between
1169 * 0-12 hours ago, 2 if the nonce is valid and generated between 12-24 hours ago.
1170 */
1171 do_action( 'check_ajax_referer', $action, $result );
1172
1173 if ( $die && false === $result ) {
1174 if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) {
1175 wp_die( -1 );
1176 } else {
1177 die( '-1' );
1178 }
1179 }
1180
1181 return $result;
1182}
1183endif;
1184
1185if ( !function_exists('wp_redirect') ) :
1186/**
1187 * Redirects to another page.
1188 *
1189 * @since 1.5.1
1190 *
1191 * @global bool $is_IIS
1192 *
1193 * @param string $location The path to redirect to.
1194 * @param int $status Status code to use.
1195 * @return bool False if $location is not provided, true otherwise.
1196 */
1197function wp_redirect($location, $status = 302) {
1198 global $is_IIS;
1199
1200 /**
1201 * Filter the redirect location.
1202 *
1203 * @since 2.1.0
1204 *
1205 * @param string $location The path to redirect to.
1206 * @param int $status Status code to use.
1207 */
1208 $location = apply_filters( 'wp_redirect', $location, $status );
1209
1210 /**
1211 * Filter the redirect status code.
1212 *
1213 * @since 2.3.0
1214 *
1215 * @param int $status Status code to use.
1216 * @param string $location The path to redirect to.
1217 */
1218 $status = apply_filters( 'wp_redirect_status', $status, $location );
1219
1220 if ( ! $location )
1221 return false;
1222
1223 $location = wp_sanitize_redirect($location);
1224
1225 if ( !$is_IIS && PHP_SAPI != 'cgi-fcgi' )
1226 status_header($status); // This causes problems on IIS and some FastCGI setups
1227
1228 header("Location: $location", true, $status);
1229
1230 return true;
1231}
1232endif;
1233
1234if ( !function_exists('wp_sanitize_redirect') ) :
1235/**
1236 * Sanitizes a URL for use in a redirect.
1237 *
1238 * @since 2.3.0
1239 *
1240 * @return string redirect-sanitized URL
1241 **/
1242function wp_sanitize_redirect($location) {
1243 $regex = '/
1244 (
1245 (?: [\xC2-\xDF][\x80-\xBF] # double-byte sequences 110xxxxx 10xxxxxx
1246 | \xE0[\xA0-\xBF][\x80-\xBF] # triple-byte sequences 1110xxxx 10xxxxxx * 2
1247 | [\xE1-\xEC][\x80-\xBF]{2}
1248 | \xED[\x80-\x9F][\x80-\xBF]
1249 | [\xEE-\xEF][\x80-\xBF]{2}
1250 | \xF0[\x90-\xBF][\x80-\xBF]{2} # four-byte sequences 11110xxx 10xxxxxx * 3
1251 | [\xF1-\xF3][\x80-\xBF]{3}
1252 | \xF4[\x80-\x8F][\x80-\xBF]{2}
1253 ){1,40} # ...one or more times
1254 )/x';
1255 $location = preg_replace_callback( $regex, '_wp_sanitize_utf8_in_redirect', $location );
1256 $location = preg_replace('|[^a-z0-9-~+_.?#=&;,/:%!*\[\]()@]|i', '', $location);
1257 $location = wp_kses_no_null($location);
1258
1259 // remove %0d and %0a from location
1260 $strip = array('%0d', '%0a', '%0D', '%0A');
1261 return _deep_replace( $strip, $location );
1262}
1263
1264/**
1265 * URL encode UTF-8 characters in a URL.
1266 *
1267 * @ignore
1268 * @since 4.2.0
1269 * @access private
1270 *
1271 * @see wp_sanitize_redirect()
1272 */
1273function _wp_sanitize_utf8_in_redirect( $matches ) {
1274 return urlencode( $matches[0] );
1275}
1276endif;
1277
1278if ( !function_exists('wp_safe_redirect') ) :
1279/**
1280 * Performs a safe (local) redirect, using wp_redirect().
1281 *
1282 * Checks whether the $location is using an allowed host, if it has an absolute
1283 * path. A plugin can therefore set or remove allowed host(s) to or from the
1284 * list.
1285 *
1286 * If the host is not allowed, then the redirect defaults to wp-admin on the siteurl
1287 * instead. This prevents malicious redirects which redirect to another host,
1288 * but only used in a few places.
1289 *
1290 * @since 2.3.0
1291 */
1292function wp_safe_redirect($location, $status = 302) {
1293
1294 // Need to look at the URL the way it will end up in wp_redirect()
1295 $location = wp_sanitize_redirect($location);
1296
1297 /**
1298 * Filter the redirect fallback URL for when the provided redirect is not safe (local).
1299 *
1300 * @since 4.3.0
1301 *
1302 * @param string $fallback_url The fallback URL to use by default.
1303 * @param int $status The redirect status.
1304 */
1305 $location = wp_validate_redirect( $location, apply_filters( 'wp_safe_redirect_fallback', admin_url(), $status ) );
1306
1307 wp_redirect($location, $status);
1308}
1309endif;
1310
1311if ( !function_exists('wp_validate_redirect') ) :
1312/**
1313 * Validates a URL for use in a redirect.
1314 *
1315 * Checks whether the $location is using an allowed host, if it has an absolute
1316 * path. A plugin can therefore set or remove allowed host(s) to or from the
1317 * list.
1318 *
1319 * If the host is not allowed, then the redirect is to $default supplied
1320 *
1321 * @since 2.8.1
1322 *
1323 * @param string $location The redirect to validate
1324 * @param string $default The value to return if $location is not allowed
1325 * @return string redirect-sanitized URL
1326 **/
1327function wp_validate_redirect($location, $default = '') {
1328 $location = trim( $location );
1329 // browsers will assume 'http' is your protocol, and will obey a redirect to a URL starting with '//'
1330 if ( substr($location, 0, 2) == '//' )
1331 $location = 'http:' . $location;
1332
1333 // In php 5 parse_url may fail if the URL query part contains http://, bug #38143
1334 $test = ( $cut = strpos($location, '?') ) ? substr( $location, 0, $cut ) : $location;
1335
1336 $lp = parse_url($test);
1337
1338 // Give up if malformed URL
1339 if ( false === $lp )
1340 return $default;
1341
1342 // Allow only http and https schemes. No data:, etc.
1343 if ( isset($lp['scheme']) && !('http' == $lp['scheme'] || 'https' == $lp['scheme']) )
1344 return $default;
1345
1346 // Reject if scheme is set but host is not. This catches urls like https:host.com for which parse_url does not set the host field.
1347 if ( isset($lp['scheme']) && !isset($lp['host']) )
1348 return $default;
1349
1350 $wpp = parse_url(home_url());
1351
1352 /**
1353 * Filter the whitelist of hosts to redirect to.
1354 *
1355 * @since 2.3.0
1356 *
1357 * @param array $hosts An array of allowed hosts.
1358 * @param bool|string $host The parsed host; empty if not isset.
1359 */
1360 $allowed_hosts = (array) apply_filters( 'allowed_redirect_hosts', array($wpp['host']), isset($lp['host']) ? $lp['host'] : '' );
1361
1362 if ( isset($lp['host']) && ( !in_array($lp['host'], $allowed_hosts) && $lp['host'] != strtolower($wpp['host'])) )
1363 $location = $default;
1364
1365 return $location;
1366}
1367endif;
1368
1369if ( ! function_exists('wp_notify_postauthor') ) :
1370/**
1371 * Notify an author (and/or others) of a comment/trackback/pingback on a post.
1372 *
1373 * @since 1.0.0
1374 *
1375 * @param int|WP_Comment $comment_id Comment ID or WP_Comment object.
1376 * @param string $deprecated Not used
1377 * @return bool True on completion. False if no email addresses were specified.
1378 */
1379function wp_notify_postauthor( $comment_id, $deprecated = null ) {
1380 if ( null !== $deprecated ) {
1381 _deprecated_argument( __FUNCTION__, '3.8' );
1382 }
1383
1384 $comment = get_comment( $comment_id );
1385 if ( empty( $comment ) || empty( $comment->comment_post_ID ) )
1386 return false;
1387
1388 $post = get_post( $comment->comment_post_ID );
1389 $author = get_userdata( $post->post_author );
1390
1391 // Who to notify? By default, just the post author, but others can be added.
1392 $emails = array();
1393 if ( $author ) {
1394 $emails[] = $author->user_email;
1395 }
1396
1397 /**
1398 * Filter the list of email addresses to receive a comment notification.
1399 *
1400 * By default, only post authors are notified of comments. This filter allows
1401 * others to be added.
1402 *
1403 * @since 3.7.0
1404 *
1405 * @param array $emails An array of email addresses to receive a comment notification.
1406 * @param int $comment_id The comment ID.
1407 */
1408 $emails = apply_filters( 'comment_notification_recipients', $emails, $comment->comment_ID );
1409 $emails = array_filter( $emails );
1410
1411 // If there are no addresses to send the comment to, bail.
1412 if ( ! count( $emails ) ) {
1413 return false;
1414 }
1415
1416 // Facilitate unsetting below without knowing the keys.
1417 $emails = array_flip( $emails );
1418
1419 /**
1420 * Filter whether to notify comment authors of their comments on their own posts.
1421 *
1422 * By default, comment authors aren't notified of their comments on their own
1423 * posts. This filter allows you to override that.
1424 *
1425 * @since 3.8.0
1426 *
1427 * @param bool $notify Whether to notify the post author of their own comment.
1428 * Default false.
1429 * @param int $comment_id The comment ID.
1430 */
1431 $notify_author = apply_filters( 'comment_notification_notify_author', false, $comment->comment_ID );
1432
1433 // The comment was left by the author
1434 if ( $author && ! $notify_author && $comment->user_id == $post->post_author ) {
1435 unset( $emails[ $author->user_email ] );
1436 }
1437
1438 // The author moderated a comment on their own post
1439 if ( $author && ! $notify_author && $post->post_author == get_current_user_id() ) {
1440 unset( $emails[ $author->user_email ] );
1441 }
1442
1443 // The post author is no longer a member of the blog
1444 if ( $author && ! $notify_author && ! user_can( $post->post_author, 'read_post', $post->ID ) ) {
1445 unset( $emails[ $author->user_email ] );
1446 }
1447
1448 // If there's no email to send the comment to, bail, otherwise flip array back around for use below
1449 if ( ! count( $emails ) ) {
1450 return false;
1451 } else {
1452 $emails = array_flip( $emails );
1453 }
1454
1455 $comment_author_domain = @gethostbyaddr($comment->comment_author_IP);
1456
1457 // The blogname option is escaped with esc_html on the way into the database in sanitize_option
1458 // we want to reverse this for the plain text arena of emails.
1459 $blogname = wp_specialchars_decode(get_option('blogname'), ENT_QUOTES);
1460 $comment_content = wp_specialchars_decode( $comment->comment_content );
1461
1462 switch ( $comment->comment_type ) {
1463 case 'trackback':
1464 $notify_message = sprintf( __( 'New trackback on your post "%s"' ), $post->post_title ) . "\r\n";
1465 /* translators: 1: website name, 2: website IP, 3: website hostname */
1466 $notify_message .= sprintf( __('Website: %1$s (IP: %2$s, %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";
1467 $notify_message .= sprintf( __( 'URL: %s' ), $comment->comment_author_url ) . "\r\n";
1468 $notify_message .= sprintf( __( 'Comment: %s' ), "\r\n" . $comment_content ) . "\r\n\r\n";
1469 $notify_message .= __( 'You can see all trackbacks on this post here:' ) . "\r\n";
1470 /* translators: 1: blog name, 2: post title */
1471 $subject = sprintf( __('[%1$s] Trackback: "%2$s"'), $blogname, $post->post_title );
1472 break;
1473 case 'pingback':
1474 $notify_message = sprintf( __( 'New pingback on your post "%s"' ), $post->post_title ) . "\r\n";
1475 /* translators: 1: website name, 2: website IP, 3: website hostname */
1476 $notify_message .= sprintf( __('Website: %1$s (IP: %2$s, %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";
1477 $notify_message .= sprintf( __( 'URL: %s' ), $comment->comment_author_url ) . "\r\n";
1478 $notify_message .= sprintf( __( 'Comment: %s' ), "\r\n" . $comment_content ) . "\r\n\r\n";
1479 $notify_message .= __( 'You can see all pingbacks on this post here:' ) . "\r\n";
1480 /* translators: 1: blog name, 2: post title */
1481 $subject = sprintf( __('[%1$s] Pingback: "%2$s"'), $blogname, $post->post_title );
1482 break;
1483 default: // Comments
1484 $notify_message = sprintf( __( 'New comment on your post "%s"' ), $post->post_title ) . "\r\n";
1485 /* translators: 1: comment author, 2: author IP, 3: author domain */
1486 $notify_message .= sprintf( __( 'Author: %1$s (IP: %2$s, %3$s)' ), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";
1487 $notify_message .= sprintf( __( 'Email: %s' ), $comment->comment_author_email ) . "\r\n";
1488 $notify_message .= sprintf( __( 'URL: %s' ), $comment->comment_author_url ) . "\r\n";
1489 $notify_message .= sprintf( __('Comment: %s' ), "\r\n" . $comment_content ) . "\r\n\r\n";
1490 $notify_message .= __( 'You can see all comments on this post here:' ) . "\r\n";
1491 /* translators: 1: blog name, 2: post title */
1492 $subject = sprintf( __('[%1$s] Comment: "%2$s"'), $blogname, $post->post_title );
1493 break;
1494 }
1495 $notify_message .= get_permalink($comment->comment_post_ID) . "#comments\r\n\r\n";
1496 $notify_message .= sprintf( __('Permalink: %s'), get_comment_link( $comment ) ) . "\r\n";
1497
1498 if ( user_can( $post->post_author, 'edit_comment', $comment->comment_ID ) ) {
1499 if ( EMPTY_TRASH_DAYS ) {
1500 $notify_message .= sprintf( __('Trash it: %s'), admin_url("comment.php?action=trash&c={$comment->comment_ID}") ) . "\r\n";
1501 } else {
1502 $notify_message .= sprintf( __('Delete it: %s'), admin_url("comment.php?action=delete&c={$comment->comment_ID}") ) . "\r\n";
1503 }
1504 $notify_message .= sprintf( __('Spam it: %s'), admin_url("comment.php?action=spam&c={$comment->comment_ID}") ) . "\r\n";
1505 }
1506
1507 $wp_email = 'wordpress@' . preg_replace('#^www\.#', '', strtolower($_SERVER['SERVER_NAME']));
1508
1509 if ( '' == $comment->comment_author ) {
1510 $from = "From: \"$blogname\" <$wp_email>";
1511 if ( '' != $comment->comment_author_email )
1512 $reply_to = "Reply-To: $comment->comment_author_email";
1513 } else {
1514 $from = "From: \"$comment->comment_author\" <$wp_email>";
1515 if ( '' != $comment->comment_author_email )
1516 $reply_to = "Reply-To: \"$comment->comment_author_email\" <$comment->comment_author_email>";
1517 }
1518
1519 $message_headers = "$from\n"
1520 . "Content-Type: text/plain; charset=\"" . get_option('blog_charset') . "\"\n";
1521
1522 if ( isset($reply_to) )
1523 $message_headers .= $reply_to . "\n";
1524
1525 /**
1526 * Filter the comment notification email text.
1527 *
1528 * @since 1.5.2
1529 *
1530 * @param string $notify_message The comment notification email text.
1531 * @param int $comment_id Comment ID.
1532 */
1533 $notify_message = apply_filters( 'comment_notification_text', $notify_message, $comment->comment_ID );
1534
1535 /**
1536 * Filter the comment notification email subject.
1537 *
1538 * @since 1.5.2
1539 *
1540 * @param string $subject The comment notification email subject.
1541 * @param int $comment_id Comment ID.
1542 */
1543 $subject = apply_filters( 'comment_notification_subject', $subject, $comment->comment_ID );
1544
1545 /**
1546 * Filter the comment notification email headers.
1547 *
1548 * @since 1.5.2
1549 *
1550 * @param string $message_headers Headers for the comment notification email.
1551 * @param int $comment_id Comment ID.
1552 */
1553 $message_headers = apply_filters( 'comment_notification_headers', $message_headers, $comment->comment_ID );
1554
1555 foreach ( $emails as $email ) {
1556 @wp_mail( $email, wp_specialchars_decode( $subject ), $notify_message, $message_headers );
1557 }
1558
1559 return true;
1560}
1561endif;
1562
1563if ( !function_exists('wp_notify_moderator') ) :
1564/**
1565 * Notifies the moderator of the site about a new comment that is awaiting approval.
1566 *
1567 * @since 1.0.0
1568 *
1569 * @global wpdb $wpdb WordPress database abstraction object.
1570 *
1571 * Uses the {@see 'notify_moderator'} filter to determine whether the site moderator
1572 * should be notified, overriding the site setting.
1573 *
1574 * @param int $comment_id Comment ID.
1575 * @return true Always returns true.
1576 */
1577function wp_notify_moderator($comment_id) {
1578 global $wpdb;
1579
1580 $maybe_notify = get_option( 'moderation_notify' );
1581
1582 /**
1583 * Filter whether to send the site moderator email notifications, overriding the site setting.
1584 *
1585 * @since 4.4.0
1586 *
1587 * @param bool $maybe_notify Whether to notify blog moderator.
1588 * @param int $comment_ID The id of the comment for the notification.
1589 */
1590 $maybe_notify = apply_filters( 'notify_moderator', $maybe_notify, $comment_id );
1591
1592 if ( ! $maybe_notify ) {
1593 return true;
1594 }
1595
1596 $comment = get_comment($comment_id);
1597 $post = get_post($comment->comment_post_ID);
1598 $user = get_userdata( $post->post_author );
1599 // Send to the administration and to the post author if the author can modify the comment.
1600 $emails = array( get_option( 'admin_email' ) );
1601 if ( $user && user_can( $user->ID, 'edit_comment', $comment_id ) && ! empty( $user->user_email ) ) {
1602 if ( 0 !== strcasecmp( $user->user_email, get_option( 'admin_email' ) ) )
1603 $emails[] = $user->user_email;
1604 }
1605
1606 $comment_author_domain = @gethostbyaddr($comment->comment_author_IP);
1607 $comments_waiting = $wpdb->get_var("SELECT count(comment_ID) FROM $wpdb->comments WHERE comment_approved = '0'");
1608
1609 // The blogname option is escaped with esc_html on the way into the database in sanitize_option
1610 // we want to reverse this for the plain text arena of emails.
1611 $blogname = wp_specialchars_decode(get_option('blogname'), ENT_QUOTES);
1612 $comment_content = wp_specialchars_decode( $comment->comment_content );
1613
1614 switch ( $comment->comment_type ) {
1615 case 'trackback':
1616 $notify_message = sprintf( __('A new trackback on the post "%s" is waiting for your approval'), $post->post_title ) . "\r\n";
1617 $notify_message .= get_permalink($comment->comment_post_ID) . "\r\n\r\n";
1618 /* translators: 1: website name, 2: website IP, 3: website hostname */
1619 $notify_message .= sprintf( __( 'Website: %1$s (IP: %2$s, %3$s)' ), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";
1620 $notify_message .= sprintf( __( 'URL: %s' ), $comment->comment_author_url ) . "\r\n";
1621 $notify_message .= __('Trackback excerpt: ') . "\r\n" . $comment_content . "\r\n\r\n";
1622 break;
1623 case 'pingback':
1624 $notify_message = sprintf( __('A new pingback on the post "%s" is waiting for your approval'), $post->post_title ) . "\r\n";
1625 $notify_message .= get_permalink($comment->comment_post_ID) . "\r\n\r\n";
1626 /* translators: 1: website name, 2: website IP, 3: website hostname */
1627 $notify_message .= sprintf( __( 'Website: %1$s (IP: %2$s, %3$s)' ), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";
1628 $notify_message .= sprintf( __( 'URL: %s' ), $comment->comment_author_url ) . "\r\n";
1629 $notify_message .= __('Pingback excerpt: ') . "\r\n" . $comment_content . "\r\n\r\n";
1630 break;
1631 default: // Comments
1632 $notify_message = sprintf( __('A new comment on the post "%s" is waiting for your approval'), $post->post_title ) . "\r\n";
1633 $notify_message .= get_permalink($comment->comment_post_ID) . "\r\n\r\n";
1634 $notify_message .= sprintf( __( 'Author: %1$s (IP: %2$s, %3$s)' ), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";
1635 $notify_message .= sprintf( __( 'Email: %s' ), $comment->comment_author_email ) . "\r\n";
1636 $notify_message .= sprintf( __( 'URL: %s' ), $comment->comment_author_url ) . "\r\n";
1637 $notify_message .= sprintf( __( 'Comment: %s' ), "\r\n" . $comment_content ) . "\r\n\r\n";
1638 break;
1639 }
1640
1641 $notify_message .= sprintf( __('Approve it: %s'), admin_url("comment.php?action=approve&c=$comment_id") ) . "\r\n";
1642 if ( EMPTY_TRASH_DAYS )
1643 $notify_message .= sprintf( __('Trash it: %s'), admin_url("comment.php?action=trash&c=$comment_id") ) . "\r\n";
1644 else
1645 $notify_message .= sprintf( __('Delete it: %s'), admin_url("comment.php?action=delete&c=$comment_id") ) . "\r\n";
1646 $notify_message .= sprintf( __('Spam it: %s'), admin_url("comment.php?action=spam&c=$comment_id") ) . "\r\n";
1647
1648 $notify_message .= sprintf( _n('Currently %s comment is waiting for approval. Please visit the moderation panel:',
1649 'Currently %s comments are waiting for approval. Please visit the moderation panel:', $comments_waiting), number_format_i18n($comments_waiting) ) . "\r\n";
1650 $notify_message .= admin_url("edit-comments.php?comment_status=moderated") . "\r\n";
1651
1652 $subject = sprintf( __('[%1$s] Please moderate: "%2$s"'), $blogname, $post->post_title );
1653 $message_headers = '';
1654
1655 /**
1656 * Filter the list of recipients for comment moderation emails.
1657 *
1658 * @since 3.7.0
1659 *
1660 * @param array $emails List of email addresses to notify for comment moderation.
1661 * @param int $comment_id Comment ID.
1662 */
1663 $emails = apply_filters( 'comment_moderation_recipients', $emails, $comment_id );
1664
1665 /**
1666 * Filter the comment moderation email text.
1667 *
1668 * @since 1.5.2
1669 *
1670 * @param string $notify_message Text of the comment moderation email.
1671 * @param int $comment_id Comment ID.
1672 */
1673 $notify_message = apply_filters( 'comment_moderation_text', $notify_message, $comment_id );
1674
1675 /**
1676 * Filter the comment moderation email subject.
1677 *
1678 * @since 1.5.2
1679 *
1680 * @param string $subject Subject of the comment moderation email.
1681 * @param int $comment_id Comment ID.
1682 */
1683 $subject = apply_filters( 'comment_moderation_subject', $subject, $comment_id );
1684
1685 /**
1686 * Filter the comment moderation email headers.
1687 *
1688 * @since 2.8.0
1689 *
1690 * @param string $message_headers Headers for the comment moderation email.
1691 * @param int $comment_id Comment ID.
1692 */
1693 $message_headers = apply_filters( 'comment_moderation_headers', $message_headers, $comment_id );
1694
1695 foreach ( $emails as $email ) {
1696 @wp_mail( $email, wp_specialchars_decode( $subject ), $notify_message, $message_headers );
1697 }
1698
1699 return true;
1700}
1701endif;
1702
1703if ( !function_exists('wp_password_change_notification') ) :
1704/**
1705 * Notify the blog admin of a user changing password, normally via email.
1706 *
1707 * @since 2.7.0
1708 *
1709 * @param WP_User $user User object.
1710 */
1711function wp_password_change_notification( $user ) {
1712 // send a copy of password change notification to the admin
1713 // but check to see if it's the admin whose password we're changing, and skip this
1714 if ( 0 !== strcasecmp( $user->user_email, get_option( 'admin_email' ) ) ) {
1715 $message = sprintf(__('Password Lost and Changed for user: %s'), $user->user_login) . "\r\n";
1716 // The blogname option is escaped with esc_html on the way into the database in sanitize_option
1717 // we want to reverse this for the plain text arena of emails.
1718 $blogname = wp_specialchars_decode(get_option('blogname'), ENT_QUOTES);
1719 wp_mail(get_option('admin_email'), sprintf(__('[%s] Password Lost/Changed'), $blogname), $message);
1720 }
1721}
1722endif;
1723
1724if ( !function_exists('wp_new_user_notification') ) :
1725/**
1726 * Email login credentials to a newly-registered user.
1727 *
1728 * A new user registration notification is also sent to admin email.
1729 *
1730 * @since 2.0.0
1731 * @since 4.3.0 The `$plaintext_pass` parameter was changed to `$notify`.
1732 * @since 4.3.1 The `$plaintext_pass` parameter was deprecated. `$notify` added as a third parameter.
1733 *
1734 * @global wpdb $wpdb WordPress database object for queries.
1735 * @global PasswordHash $wp_hasher Portable PHP password hashing framework instance.
1736 *
1737 * @param int $user_id User ID.
1738 * @param null $deprecated Not used (argument deprecated).
1739 * @param string $notify Optional. Type of notification that should happen. Accepts 'admin' or an empty
1740 * string (admin only), or 'both' (admin and user). Default empty.
1741 */
1742function wp_new_user_notification( $user_id, $deprecated = null, $notify = '' ) {
1743 if ( $deprecated !== null ) {
1744 _deprecated_argument( __FUNCTION__, '4.3.1' );
1745 }
1746
1747 global $wpdb, $wp_hasher;
1748 $user = get_userdata( $user_id );
1749
1750 // The blogname option is escaped with esc_html on the way into the database in sanitize_option
1751 // we want to reverse this for the plain text arena of emails.
1752 $blogname = wp_specialchars_decode(get_option('blogname'), ENT_QUOTES);
1753
1754 $message = sprintf(__('New user registration on your site %s:'), $blogname) . "\r\n\r\n";
1755 $message .= sprintf(__('Username: %s'), $user->user_login) . "\r\n\r\n";
1756 $message .= sprintf(__('Email: %s'), $user->user_email) . "\r\n";
1757
1758 @wp_mail(get_option('admin_email'), sprintf(__('[%s] New User Registration'), $blogname), $message);
1759
1760 // `$deprecated was pre-4.3 `$plaintext_pass`. An empty `$plaintext_pass` didn't sent a user notifcation.
1761 if ( 'admin' === $notify || ( empty( $deprecated ) && empty( $notify ) ) ) {
1762 return;
1763 }
1764
1765 // Generate something random for a password reset key.
1766 $key = wp_generate_password( 20, false );
1767
1768 /** This action is documented in wp-login.php */
1769 do_action( 'retrieve_password_key', $user->user_login, $key );
1770
1771 // Now insert the key, hashed, into the DB.
1772 if ( empty( $wp_hasher ) ) {
1773 require_once ABSPATH . WPINC . '/class-phpass.php';
1774 $wp_hasher = new PasswordHash( 8, true );
1775 }
1776 $hashed = time() . ':' . $wp_hasher->HashPassword( $key );
1777 $wpdb->update( $wpdb->users, array( 'user_activation_key' => $hashed ), array( 'user_login' => $user->user_login ) );
1778
1779 $message = sprintf(__('Username: %s'), $user->user_login) . "\r\n\r\n";
1780 $message .= __('To set your password, visit the following address:') . "\r\n\r\n";
1781 $message .= '<' . network_site_url("wp-login.php?action=rp&key=$key&login=" . rawurlencode($user->user_login), 'login') . ">\r\n\r\n";
1782
1783 $message .= wp_login_url() . "\r\n";
1784
1785 wp_mail($user->user_email, sprintf(__('[%s] Your username and password info'), $blogname), $message);
1786}
1787endif;
1788
1789if ( !function_exists('wp_nonce_tick') ) :
1790/**
1791 * Get the time-dependent variable for nonce creation.
1792 *
1793 * A nonce has a lifespan of two ticks. Nonces in their second tick may be
1794 * updated, e.g. by autosave.
1795 *
1796 * @since 2.5.0
1797 *
1798 * @return float Float value rounded up to the next highest integer.
1799 */
1800function wp_nonce_tick() {
1801 /**
1802 * Filter the lifespan of nonces in seconds.
1803 *
1804 * @since 2.5.0
1805 *
1806 * @param int $lifespan Lifespan of nonces in seconds. Default 86,400 seconds, or one day.
1807 */
1808 $nonce_life = apply_filters( 'nonce_life', DAY_IN_SECONDS );
1809
1810 return ceil(time() / ( $nonce_life / 2 ));
1811}
1812endif;
1813
1814if ( !function_exists('wp_verify_nonce') ) :
1815/**
1816 * Verify that correct nonce was used with time limit.
1817 *
1818 * The user is given an amount of time to use the token, so therefore, since the
1819 * UID and $action remain the same, the independent variable is the time.
1820 *
1821 * @since 2.0.3
1822 *
1823 * @param string $nonce Nonce that was used in the form to verify
1824 * @param string|int $action Should give context to what is taking place and be the same when nonce was created.
1825 * @return false|int False if the nonce is invalid, 1 if the nonce is valid and generated between
1826 * 0-12 hours ago, 2 if the nonce is valid and generated between 12-24 hours ago.
1827 */
1828function wp_verify_nonce( $nonce, $action = -1 ) {
1829 $nonce = (string) $nonce;
1830 $user = wp_get_current_user();
1831 $uid = (int) $user->ID;
1832 if ( ! $uid ) {
1833 /**
1834 * Filter whether the user who generated the nonce is logged out.
1835 *
1836 * @since 3.5.0
1837 *
1838 * @param int $uid ID of the nonce-owning user.
1839 * @param string $action The nonce action.
1840 */
1841 $uid = apply_filters( 'nonce_user_logged_out', $uid, $action );
1842 }
1843
1844 if ( empty( $nonce ) ) {
1845 return false;
1846 }
1847
1848 $token = wp_get_session_token();
1849 $i = wp_nonce_tick();
1850
1851 // Nonce generated 0-12 hours ago
1852 $expected = substr( wp_hash( $i . '|' . $action . '|' . $uid . '|' . $token, 'nonce'), -12, 10 );
1853 if ( hash_equals( $expected, $nonce ) ) {
1854 return 1;
1855 }
1856
1857 // Nonce generated 12-24 hours ago
1858 $expected = substr( wp_hash( ( $i - 1 ) . '|' . $action . '|' . $uid . '|' . $token, 'nonce' ), -12, 10 );
1859 if ( hash_equals( $expected, $nonce ) ) {
1860 return 2;
1861 }
1862
1863 /**
1864 * Fires when nonce verification fails.
1865 *
1866 * @since 4.4.0
1867 *
1868 * @param string $nonce The invalid nonce.
1869 * @param string|int $action The nonce action.
1870 * @param WP_User $user The current user object.
1871 * @param string $token The user's session token.
1872 */
1873 do_action( 'wp_verify_nonce_failed', $nonce, $action, $user, $token );
1874
1875 // Invalid nonce
1876 return false;
1877}
1878endif;
1879
1880if ( !function_exists('wp_create_nonce') ) :
1881/**
1882 * Creates a cryptographic token tied to a specific action, user, user session,
1883 * and window of time.
1884 *
1885 * @since 2.0.3
1886 * @since 4.0.0 Session tokens were integrated with nonce creation
1887 *
1888 * @param string|int $action Scalar value to add context to the nonce.
1889 * @return string The token.
1890 */
1891function wp_create_nonce($action = -1) {
1892 $user = wp_get_current_user();
1893 $uid = (int) $user->ID;
1894 if ( ! $uid ) {
1895 /** This filter is documented in wp-includes/pluggable.php */
1896 $uid = apply_filters( 'nonce_user_logged_out', $uid, $action );
1897 }
1898
1899 $token = wp_get_session_token();
1900 $i = wp_nonce_tick();
1901
1902 return substr( wp_hash( $i . '|' . $action . '|' . $uid . '|' . $token, 'nonce' ), -12, 10 );
1903}
1904endif;
1905
1906if ( !function_exists('wp_salt') ) :
1907/**
1908 * Get salt to add to hashes.
1909 *
1910 * Salts are created using secret keys. Secret keys are located in two places:
1911 * in the database and in the wp-config.php file. The secret key in the database
1912 * is randomly generated and will be appended to the secret keys in wp-config.php.
1913 *
1914 * The secret keys in wp-config.php should be updated to strong, random keys to maximize
1915 * security. Below is an example of how the secret key constants are defined.
1916 * Do not paste this example directly into wp-config.php. Instead, have a
1917 * {@link https://api.wordpress.org/secret-key/1.1/salt/ secret key created} just
1918 * for you.
1919 *
1920 * define('AUTH_KEY', ' Xakm<o xQy rw4EMsLKM-?!T+,PFF})H4lzcW57AF0U@N@< >M%G4Yt>f`z]MON');
1921 * define('SECURE_AUTH_KEY', 'LzJ}op]mr|6+![P}Ak:uNdJCJZd>(Hx.-Mh#Tz)pCIU#uGEnfFz|f ;;eU%/U^O~');
1922 * define('LOGGED_IN_KEY', '|i|Ux`9<p-h$aFf(qnT:sDO:D1P^wZ$$/Ra@miTJi9G;ddp_<q}6H1)o|a +&JCM');
1923 * define('NONCE_KEY', '%:R{[P|,s.KuMltH5}cI;/k<Gx~j!f0I)m_sIyu+&NJZ)-iO>z7X>QYR0Z_XnZ@|');
1924 * define('AUTH_SALT', 'eZyT)-Naw]F8CwA*VaW#q*|.)g@o}||wf~@C-YSt}(dh_r6EbI#A,y|nU2{B#JBW');
1925 * define('SECURE_AUTH_SALT', '!=oLUTXh,QW=H `}`L|9/^4-3 STz},T(w}W<I`.JjPi)<Bmf1v,HpGe}T1:Xt7n');
1926 * define('LOGGED_IN_SALT', '+XSqHc;@Q*K_b|Z?NC[3H!!EONbh.n<+=uKR:>*c(u`g~EJBf#8u#R{mUEZrozmm');
1927 * define('NONCE_SALT', 'h`GXHhD>SLWVfg1(1(N{;.V!MoE(SfbA_ksP@&`+AycHcAV$+?@3q+rxV{%^VyKT');
1928 *
1929 * Salting passwords helps against tools which has stored hashed values of
1930 * common dictionary strings. The added values makes it harder to crack.
1931 *
1932 * @since 2.5.0
1933 *
1934 * @link https://api.wordpress.org/secret-key/1.1/salt/ Create secrets for wp-config.php
1935 *
1936 * @staticvar array $cached_salts
1937 * @staticvar array $duplicated_keys
1938 *
1939 * @param string $scheme Authentication scheme (auth, secure_auth, logged_in, nonce)
1940 * @return string Salt value
1941 */
1942function wp_salt( $scheme = 'auth' ) {
1943 static $cached_salts = array();
1944 if ( isset( $cached_salts[ $scheme ] ) ) {
1945 /**
1946 * Filter the WordPress salt.
1947 *
1948 * @since 2.5.0
1949 *
1950 * @param string $cached_salt Cached salt for the given scheme.
1951 * @param string $scheme Authentication scheme. Values include 'auth',
1952 * 'secure_auth', 'logged_in', and 'nonce'.
1953 */
1954 return apply_filters( 'salt', $cached_salts[ $scheme ], $scheme );
1955 }
1956
1957 static $duplicated_keys;
1958 if ( null === $duplicated_keys ) {
1959 $duplicated_keys = array( 'put your unique phrase here' => true );
1960 foreach ( array( 'AUTH', 'SECURE_AUTH', 'LOGGED_IN', 'NONCE', 'SECRET' ) as $first ) {
1961 foreach ( array( 'KEY', 'SALT' ) as $second ) {
1962 if ( ! defined( "{$first}_{$second}" ) ) {
1963 continue;
1964 }
1965 $value = constant( "{$first}_{$second}" );
1966 $duplicated_keys[ $value ] = isset( $duplicated_keys[ $value ] );
1967 }
1968 }
1969 }
1970
1971 $values = array(
1972 'key' => '',
1973 'salt' => ''
1974 );
1975 if ( defined( 'SECRET_KEY' ) && SECRET_KEY && empty( $duplicated_keys[ SECRET_KEY ] ) ) {
1976 $values['key'] = SECRET_KEY;
1977 }
1978 if ( 'auth' == $scheme && defined( 'SECRET_SALT' ) && SECRET_SALT && empty( $duplicated_keys[ SECRET_SALT ] ) ) {
1979 $values['salt'] = SECRET_SALT;
1980 }
1981
1982 if ( in_array( $scheme, array( 'auth', 'secure_auth', 'logged_in', 'nonce' ) ) ) {
1983 foreach ( array( 'key', 'salt' ) as $type ) {
1984 $const = strtoupper( "{$scheme}_{$type}" );
1985 if ( defined( $const ) && constant( $const ) && empty( $duplicated_keys[ constant( $const ) ] ) ) {
1986 $values[ $type ] = constant( $const );
1987 } elseif ( ! $values[ $type ] ) {
1988 $values[ $type ] = get_site_option( "{$scheme}_{$type}" );
1989 if ( ! $values[ $type ] ) {
1990 $values[ $type ] = wp_generate_password( 64, true, true );
1991 update_site_option( "{$scheme}_{$type}", $values[ $type ] );
1992 }
1993 }
1994 }
1995 } else {
1996 if ( ! $values['key'] ) {
1997 $values['key'] = get_site_option( 'secret_key' );
1998 if ( ! $values['key'] ) {
1999 $values['key'] = wp_generate_password( 64, true, true );
2000 update_site_option( 'secret_key', $values['key'] );
2001 }
2002 }
2003 $values['salt'] = hash_hmac( 'md5', $scheme, $values['key'] );
2004 }
2005
2006 $cached_salts[ $scheme ] = $values['key'] . $values['salt'];
2007
2008 /** This filter is documented in wp-includes/pluggable.php */
2009 return apply_filters( 'salt', $cached_salts[ $scheme ], $scheme );
2010}
2011endif;
2012
2013if ( !function_exists('wp_hash') ) :
2014/**
2015 * Get hash of given string.
2016 *
2017 * @since 2.0.3
2018 *
2019 * @param string $data Plain text to hash
2020 * @return string Hash of $data
2021 */
2022function wp_hash($data, $scheme = 'auth') {
2023 $salt = wp_salt($scheme);
2024
2025 return hash_hmac('md5', $data, $salt);
2026}
2027endif;
2028
2029if ( !function_exists('wp_hash_password') ) :
2030/**
2031 * Create a hash (encrypt) of a plain text password.
2032 *
2033 * For integration with other applications, this function can be overwritten to
2034 * instead use the other package password checking algorithm.
2035 *
2036 * @since 2.5.0
2037 *
2038 * @global PasswordHash $wp_hasher PHPass object
2039 *
2040 * @param string $password Plain text user password to hash
2041 * @return string The hash string of the password
2042 */
2043function wp_hash_password($password) {
2044 global $wp_hasher;
2045
2046 if ( empty($wp_hasher) ) {
2047 require_once( ABSPATH . WPINC . '/class-phpass.php');
2048 // By default, use the portable hash from phpass
2049 $wp_hasher = new PasswordHash(8, true);
2050 }
2051
2052 return $wp_hasher->HashPassword( trim( $password ) );
2053}
2054endif;
2055
2056if ( !function_exists('wp_check_password') ) :
2057/**
2058 * Checks the plaintext password against the encrypted Password.
2059 *
2060 * Maintains compatibility between old version and the new cookie authentication
2061 * protocol using PHPass library. The $hash parameter is the encrypted password
2062 * and the function compares the plain text password when encrypted similarly
2063 * against the already encrypted password to see if they match.
2064 *
2065 * For integration with other applications, this function can be overwritten to
2066 * instead use the other package password checking algorithm.
2067 *
2068 * @since 2.5.0
2069 *
2070 * @global PasswordHash $wp_hasher PHPass object used for checking the password
2071 * against the $hash + $password
2072 * @uses PasswordHash::CheckPassword
2073 *
2074 * @param string $password Plaintext user's password
2075 * @param string $hash Hash of the user's password to check against.
2076 * @return bool False, if the $password does not match the hashed password
2077 */
2078function wp_check_password($password, $hash, $user_id = '') {
2079 global $wp_hasher;
2080
2081 // If the hash is still md5...
2082 if ( strlen($hash) <= 32 ) {
2083 $check = hash_equals( $hash, md5( $password ) );
2084 if ( $check && $user_id ) {
2085 // Rehash using new hash.
2086 wp_set_password($password, $user_id);
2087 $hash = wp_hash_password($password);
2088 }
2089
2090 /**
2091 * Filter whether the plaintext password matches the encrypted password.
2092 *
2093 * @since 2.5.0
2094 *
2095 * @param bool $check Whether the passwords match.
2096 * @param string $password The plaintext password.
2097 * @param string $hash The hashed password.
2098 * @param int $user_id User ID.
2099 */
2100 return apply_filters( 'check_password', $check, $password, $hash, $user_id );
2101 }
2102
2103 // If the stored hash is longer than an MD5, presume the
2104 // new style phpass portable hash.
2105 if ( empty($wp_hasher) ) {
2106 require_once( ABSPATH . WPINC . '/class-phpass.php');
2107 // By default, use the portable hash from phpass
2108 $wp_hasher = new PasswordHash(8, true);
2109 }
2110
2111 $check = $wp_hasher->CheckPassword($password, $hash);
2112
2113 /** This filter is documented in wp-includes/pluggable.php */
2114 return apply_filters( 'check_password', $check, $password, $hash, $user_id );
2115}
2116endif;
2117
2118if ( !function_exists('wp_generate_password') ) :
2119/**
2120 * Generates a random password drawn from the defined set of characters.
2121 *
2122 * @since 2.5.0
2123 *
2124 * @param int $length Optional. The length of password to generate. Default 12.
2125 * @param bool $special_chars Optional. Whether to include standard special characters.
2126 * Default true.
2127 * @param bool $extra_special_chars Optional. Whether to include other special characters.
2128 * Used when generating secret keys and salts. Default false.
2129 * @return string The random password.
2130 */
2131function wp_generate_password( $length = 12, $special_chars = true, $extra_special_chars = false ) {
2132 $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
2133 if ( $special_chars )
2134 $chars .= '!@#$%^&*()';
2135 if ( $extra_special_chars )
2136 $chars .= '-_ []{}<>~`+=,.;:/?|';
2137
2138 $password = '';
2139 for ( $i = 0; $i < $length; $i++ ) {
2140 $password .= substr($chars, wp_rand(0, strlen($chars) - 1), 1);
2141 }
2142
2143 /**
2144 * Filter the randomly-generated password.
2145 *
2146 * @since 3.0.0
2147 *
2148 * @param string $password The generated password.
2149 */
2150 return apply_filters( 'random_password', $password );
2151}
2152endif;
2153
2154if ( !function_exists('wp_rand') ) :
2155/**
2156 * Generates a random number
2157 *
2158 * @since 2.6.2
2159 * @since 4.4.0 Uses PHP7 random_int() or the random_compat library if available.
2160 *
2161 * @global string $rnd_value
2162 * @staticvar string $seed
2163 * @staticvar bool $external_rand_source_available
2164 *
2165 * @param int $min Lower limit for the generated number
2166 * @param int $max Upper limit for the generated number
2167 * @return int A random number between min and max
2168 */
2169function wp_rand( $min = 0, $max = 0 ) {
2170 global $rnd_value;
2171
2172 // Some misconfigured 32bit environments (Entropy PHP, for example) truncate integers larger than PHP_INT_MAX to PHP_INT_MAX rather than overflowing them to floats.
2173 $max_random_number = 3000000000 === 2147483647 ? (float) "4294967295" : 4294967295; // 4294967295 = 0xffffffff
2174
2175 // We only handle Ints, floats are truncated to their integer value.
2176 $min = (int) $min;
2177 $max = (int) $max;
2178
2179 // Use PHP's CSPRNG, or a compatible method
2180 static $use_random_int_functionality = true;
2181 if ( $use_random_int_functionality ) {
2182 try {
2183 $_max = ( 0 != $max ) ? $max : $max_random_number;
2184 // wp_rand() can accept arguements in either order, PHP cannot.
2185 $_max = max( $min, $_max );
2186 $_min = min( $min, $_max );
2187 $val = random_int( $_min, $_max );
2188 if ( false !== $val ) {
2189 return absint( $val );
2190 } else {
2191 $use_random_int_functionality = false;
2192 }
2193 } catch ( Error $e ) {
2194 $use_random_int_functionality = false;
2195 } catch ( Exception $e ) {
2196 $use_random_int_functionality = false;
2197 }
2198 }
2199
2200 // Reset $rnd_value after 14 uses
2201 // 32(md5) + 40(sha1) + 40(sha1) / 8 = 14 random numbers from $rnd_value
2202 if ( strlen($rnd_value) < 8 ) {
2203 if ( defined( 'WP_SETUP_CONFIG' ) )
2204 static $seed = '';
2205 else
2206 $seed = get_transient('random_seed');
2207 $rnd_value = md5( uniqid(microtime() . mt_rand(), true ) . $seed );
2208 $rnd_value .= sha1($rnd_value);
2209 $rnd_value .= sha1($rnd_value . $seed);
2210 $seed = md5($seed . $rnd_value);
2211 if ( ! defined( 'WP_SETUP_CONFIG' ) && ! defined( 'WP_INSTALLING' ) ) {
2212 set_transient( 'random_seed', $seed );
2213 }
2214 }
2215
2216 // Take the first 8 digits for our value
2217 $value = substr($rnd_value, 0, 8);
2218
2219 // Strip the first eight, leaving the remainder for the next call to wp_rand().
2220 $rnd_value = substr($rnd_value, 8);
2221
2222 $value = abs(hexdec($value));
2223
2224 // Reduce the value to be within the min - max range
2225 if ( $max != 0 )
2226 $value = $min + ( $max - $min + 1 ) * $value / ( $max_random_number + 1 );
2227
2228 return abs(intval($value));
2229}
2230endif;
2231
2232if ( !function_exists('wp_set_password') ) :
2233/**
2234 * Updates the user's password with a new encrypted one.
2235 *
2236 * For integration with other applications, this function can be overwritten to
2237 * instead use the other package password checking algorithm.
2238 *
2239 * Please note: This function should be used sparingly and is really only meant for single-time
2240 * application. Leveraging this improperly in a plugin or theme could result in an endless loop
2241 * of password resets if precautions are not taken to ensure it does not execute on every page load.
2242 *
2243 * @since 2.5.0
2244 *
2245 * @global wpdb $wpdb WordPress database abstraction object.
2246 *
2247 * @param string $password The plaintext new user password
2248 * @param int $user_id User ID
2249 */
2250function wp_set_password( $password, $user_id ) {
2251 global $wpdb;
2252
2253 $hash = wp_hash_password( $password );
2254 $wpdb->update($wpdb->users, array('user_pass' => $hash, 'user_activation_key' => ''), array('ID' => $user_id) );
2255
2256 wp_cache_delete($user_id, 'users');
2257}
2258endif;
2259
2260if ( !function_exists( 'get_avatar' ) ) :
2261/**
2262 * Retrieve the avatar `<img>` tag for a user, email address, MD5 hash, comment, or post.
2263 *
2264 * @since 2.5.0
2265 * @since 4.2.0 Optional `$args` parameter added.
2266 *
2267 * @param mixed $id_or_email The Gravatar to retrieve. Accepts a user_id, gravatar md5 hash,
2268 * user email, WP_User object, WP_Post object, or WP_Comment object.
2269 * @param int $size Optional. Height and width of the avatar image file in pixels. Default 96.
2270 * @param string $default Optional. URL for the default image or a default type. Accepts '404'
2271 * (return a 404 instead of a default image), 'retro' (8bit), 'monsterid'
2272 * (monster), 'wavatar' (cartoon face), 'indenticon' (the "quilt"),
2273 * 'mystery', 'mm', or 'mysteryman' (The Oyster Man), 'blank' (transparent GIF),
2274 * or 'gravatar_default' (the Gravatar logo). Default is the value of the
2275 * 'avatar_default' option, with a fallback of 'mystery'.
2276 * @param string $alt Optional. Alternative text to use in <img> tag. Default empty.
2277 * @param array $args {
2278 * Optional. Extra arguments to retrieve the avatar.
2279 *
2280 * @type int $height Display height of the avatar in pixels. Defaults to $size.
2281 * @type int $width Display width of the avatar in pixels. Defaults to $size.
2282 * @type bool $force_default Whether to always show the default image, never the Gravatar. Default false.
2283 * @type string $rating What rating to display avatars up to. Accepts 'G', 'PG', 'R', 'X', and are
2284 * judged in that order. Default is the value of the 'avatar_rating' option.
2285 * @type string $scheme URL scheme to use. See set_url_scheme() for accepted values.
2286 * Default null.
2287 * @type array|string $class Array or string of additional classes to add to the <img> element.
2288 * Default null.
2289 * @type bool $force_display Whether to always show the avatar - ignores the show_avatars option.
2290 * Default false.
2291 * @type string $extra_attr HTML attributes to insert in the IMG element. Is not sanitized. Default empty.
2292 * }
2293 * @return false|string `<img>` tag for the user's avatar. False on failure.
2294 */
2295function get_avatar( $id_or_email, $size = 96, $default = '', $alt = '', $args = null ) {
2296 $defaults = array(
2297 // get_avatar_data() args.
2298 'size' => 96,
2299 'height' => null,
2300 'width' => null,
2301 'default' => get_option( 'avatar_default', 'mystery' ),
2302 'force_default' => false,
2303 'rating' => get_option( 'avatar_rating' ),
2304 'scheme' => null,
2305 'alt' => '',
2306 'class' => null,
2307 'force_display' => false,
2308 'extra_attr' => '',
2309 );
2310
2311 if ( empty( $args ) ) {
2312 $args = array();
2313 }
2314
2315 $args['size'] = (int) $size;
2316 $args['default'] = $default;
2317 $args['alt'] = $alt;
2318
2319 $args = wp_parse_args( $args, $defaults );
2320
2321 if ( empty( $args['height'] ) ) {
2322 $args['height'] = $args['size'];
2323 }
2324 if ( empty( $args['width'] ) ) {
2325 $args['width'] = $args['size'];
2326 }
2327
2328 if ( is_object( $id_or_email ) && isset( $id_or_email->comment_ID ) ) {
2329 $id_or_email = get_comment( $id_or_email );
2330 }
2331
2332 /**
2333 * Filter whether to retrieve the avatar URL early.
2334 *
2335 * Passing a non-null value will effectively short-circuit get_avatar(), passing
2336 * the value through the {@see 'pre_get_avatar'} filter and returning early.
2337 *
2338 * @since 4.2.0
2339 *
2340 * @param string $avatar HTML for the user's avatar. Default null.
2341 * @param mixed $id_or_email The Gravatar to retrieve. Accepts a user_id, gravatar md5 hash,
2342 * user email, WP_User object, WP_Post object, or WP_Comment object.
2343 * @param array $args Arguments passed to get_avatar_url(), after processing.
2344 */
2345 $avatar = apply_filters( 'pre_get_avatar', null, $id_or_email, $args );
2346
2347 if ( ! is_null( $avatar ) ) {
2348 /** This filter is documented in wp-includes/pluggable.php */
2349 return apply_filters( 'get_avatar', $avatar, $id_or_email, $args['size'], $args['default'], $args['alt'], $args );
2350 }
2351
2352 if ( ! $args['force_display'] && ! get_option( 'show_avatars' ) ) {
2353 return false;
2354 }
2355
2356 $url2x = get_avatar_url( $id_or_email, array_merge( $args, array( 'size' => $args['size'] * 2 ) ) );
2357
2358 $args = get_avatar_data( $id_or_email, $args );
2359
2360 $url = $args['url'];
2361
2362 if ( ! $url || is_wp_error( $url ) ) {
2363 return false;
2364 }
2365
2366 $class = array( 'avatar', 'avatar-' . (int) $args['size'], 'photo' );
2367
2368 if ( ! $args['found_avatar'] || $args['force_default'] ) {
2369 $class[] = 'avatar-default';
2370 }
2371
2372 if ( $args['class'] ) {
2373 if ( is_array( $args['class'] ) ) {
2374 $class = array_merge( $class, $args['class'] );
2375 } else {
2376 $class[] = $args['class'];
2377 }
2378 }
2379
2380 $avatar = sprintf(
2381 "<img alt='%s' src='%s' srcset='%s' class='%s' height='%d' width='%d' %s/>",
2382 esc_attr( $args['alt'] ),
2383 esc_url( $url ),
2384 esc_attr( "$url2x 2x" ),
2385 esc_attr( join( ' ', $class ) ),
2386 (int) $args['height'],
2387 (int) $args['width'],
2388 $args['extra_attr']
2389 );
2390
2391 /**
2392 * Filter the avatar to retrieve.
2393 *
2394 * @since 2.5.0
2395 * @since 4.2.0 The `$args` parameter was added.
2396 *
2397 * @param string $avatar <img> tag for the user's avatar.
2398 * @param mixed $id_or_email The Gravatar to retrieve. Accepts a user_id, gravatar md5 hash,
2399 * user email, WP_User object, WP_Post object, or WP_Comment object.
2400 * @param int $size Square avatar width and height in pixels to retrieve.
2401 * @param string $alt Alternative text to use in the avatar image tag.
2402 * Default empty.
2403 * @param array $args Arguments passed to get_avatar_data(), after processing.
2404 */
2405 return apply_filters( 'get_avatar', $avatar, $id_or_email, $args['size'], $args['default'], $args['alt'], $args );
2406}
2407endif;
2408
2409if ( !function_exists( 'wp_text_diff' ) ) :
2410/**
2411 * Displays a human readable HTML representation of the difference between two strings.
2412 *
2413 * The Diff is available for getting the changes between versions. The output is
2414 * HTML, so the primary use is for displaying the changes. If the two strings
2415 * are equivalent, then an empty string will be returned.
2416 *
2417 * The arguments supported and can be changed are listed below.
2418 *
2419 * 'title' : Default is an empty string. Titles the diff in a manner compatible
2420 * with the output.
2421 * 'title_left' : Default is an empty string. Change the HTML to the left of the
2422 * title.
2423 * 'title_right' : Default is an empty string. Change the HTML to the right of
2424 * the title.
2425 *
2426 * @since 2.6.0
2427 *
2428 * @see wp_parse_args() Used to change defaults to user defined settings.
2429 * @uses Text_Diff
2430 * @uses WP_Text_Diff_Renderer_Table
2431 *
2432 * @param string $left_string "old" (left) version of string
2433 * @param string $right_string "new" (right) version of string
2434 * @param string|array $args Optional. Change 'title', 'title_left', and 'title_right' defaults.
2435 * @return string Empty string if strings are equivalent or HTML with differences.
2436 */
2437function wp_text_diff( $left_string, $right_string, $args = null ) {
2438 $defaults = array( 'title' => '', 'title_left' => '', 'title_right' => '' );
2439 $args = wp_parse_args( $args, $defaults );
2440
2441 if ( ! class_exists( 'WP_Text_Diff_Renderer_Table', false ) )
2442 require( ABSPATH . WPINC . '/wp-diff.php' );
2443
2444 $left_string = normalize_whitespace($left_string);
2445 $right_string = normalize_whitespace($right_string);
2446
2447 $left_lines = explode("\n", $left_string);
2448 $right_lines = explode("\n", $right_string);
2449 $text_diff = new Text_Diff($left_lines, $right_lines);
2450 $renderer = new WP_Text_Diff_Renderer_Table( $args );
2451 $diff = $renderer->render($text_diff);
2452
2453 if ( !$diff )
2454 return '';
2455
2456 $r = "<table class='diff'>\n";
2457
2458 if ( ! empty( $args[ 'show_split_view' ] ) ) {
2459 $r .= "<col class='content diffsplit left' /><col class='content diffsplit middle' /><col class='content diffsplit right' />";
2460 } else {
2461 $r .= "<col class='content' />";
2462 }
2463
2464 if ( $args['title'] || $args['title_left'] || $args['title_right'] )
2465 $r .= "<thead>";
2466 if ( $args['title'] )
2467 $r .= "<tr class='diff-title'><th colspan='4'>$args[title]</th></tr>\n";
2468 if ( $args['title_left'] || $args['title_right'] ) {
2469 $r .= "<tr class='diff-sub-title'>\n";
2470 $r .= "\t<td></td><th>$args[title_left]</th>\n";
2471 $r .= "\t<td></td><th>$args[title_right]</th>\n";
2472 $r .= "</tr>\n";
2473 }
2474 if ( $args['title'] || $args['title_left'] || $args['title_right'] )
2475 $r .= "</thead>\n";
2476
2477 $r .= "<tbody>\n$diff\n</tbody>\n";
2478 $r .= "</table>";
2479
2480 return $r;
2481}
2482endif;