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WordPress/wp-includes/pluggable-functions.php

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<?php
/* These functions can be replaced via plugins. They are loaded after
plugins are loaded. */
if ( !function_exists('set_current_user') ) :
function set_current_user($id, $name = '') {
return wp_set_current_user($id, $name);
}
endif;
if ( !function_exists('wp_set_current_user') ) :
function wp_set_current_user($id, $name = '') {
global $current_user;
if ( isset($current_user) && ($id == $current_user->ID) )
return $current_user;
$current_user = new WP_User($id, $name);
setup_userdata($current_user->ID);
do_action('set_current_user');
return $current_user;
}
endif;
if ( !function_exists('current_user') ) :
function wp_get_current_user() {
global $current_user;
get_currentuserinfo();
return $current_user;
}
endif;
if ( !function_exists('get_currentuserinfo') ) :
function get_currentuserinfo() {
global $current_user;
if ( defined('XMLRPC_REQUEST') && XMLRPC_REQUEST )
return false;
if ( ! empty($current_user) )
return;
if ( empty($_COOKIE[USER_COOKIE]) || empty($_COOKIE[PASS_COOKIE]) ||
!wp_login($_COOKIE[USER_COOKIE], $_COOKIE[PASS_COOKIE], true) ) {
wp_set_current_user(0);
return false;
}
$user_login = $_COOKIE[USER_COOKIE];
wp_set_current_user(0, $user_login);
}
endif;
if ( !function_exists('get_userdata') ) :
function get_userdata( $user_id ) {
global $wpdb;
$user_id = (int) $user_id;
if ( $user_id == 0 )
return false;
$user = wp_cache_get($user_id, 'users');
if ( $user )
return $user;
if ( !$user = $wpdb->get_row("SELECT * FROM $wpdb->users WHERE ID = '$user_id' LIMIT 1") )
return false;
$wpdb->hide_errors();
$metavalues = $wpdb->get_results("SELECT meta_key, meta_value FROM $wpdb->usermeta WHERE user_id = '$user_id'");
$wpdb->show_errors();
if ($metavalues) {
foreach ( $metavalues as $meta ) {
@ $value = unserialize($meta->meta_value);
if ($value === FALSE)
$value = $meta->meta_value;
$user->{$meta->meta_key} = $value;
// We need to set user_level from meta, not row
if ( $wpdb->prefix . 'user_level' == $meta->meta_key )
$user->user_level = $meta->meta_value;
} // end foreach
} //end if
// For backwards compat.
if ( isset($user->first_name) )
$user->user_firstname = $user->first_name;
if ( isset($user->last_name) )
$user->user_lastname = $user->last_name;
if ( isset($user->description) )
$user->user_description = $user->description;
wp_cache_add($user_id, $user, 'users');
wp_cache_add($user->user_login, $user, 'userlogins');
return $user;
}
endif;
if ( !function_exists('update_user_cache') ) :
function update_user_cache() {
return true;
}
endif;
if ( !function_exists('get_userdatabylogin') ) :
function get_userdatabylogin($user_login) {
global $wpdb;
$user_login = sanitize_user( $user_login );
if ( empty( $user_login ) )
return false;
$userdata = wp_cache_get($user_login, 'userlogins');
if ( $userdata )
return $userdata;
if ( !$user = $wpdb->get_row("SELECT * FROM $wpdb->users WHERE user_login = '$user_login'") )
return false;
$wpdb->hide_errors();
$metavalues = $wpdb->get_results("SELECT meta_key, meta_value FROM $wpdb->usermeta WHERE user_id = '$user->ID'");
$wpdb->show_errors();
if ($metavalues) {
foreach ( $metavalues as $meta ) {
@ $value = unserialize($meta->meta_value);
if ($value === FALSE)
$value = $meta->meta_value;
$user->{$meta->meta_key} = $value;
// We need to set user_level from meta, not row
if ( $wpdb->prefix . 'user_level' == $meta->meta_key )
$user->user_level = $meta->meta_value;
}
}
// For backwards compat.
if ( isset($user->first_name) )
$user->user_firstname = $user->first_name;
if ( isset($user->last_name) )
$user->user_lastname = $user->last_name;
if ( isset($user->description) )
$user->user_description = $user->description;
wp_cache_add($user->ID, $user, 'users');
wp_cache_add($user->user_login, $user, 'userlogins');
return $user;
}
endif;
if ( !function_exists('wp_mail') ) :
function wp_mail($to, $subject, $message, $headers = '') {
if( $headers == '' ) {
$headers = "MIME-Version: 1.0\n" .
"From: wordpress@" . preg_replace('#^www\.#', '', strtolower($_SERVER['SERVER_NAME'])) . "\n" .
"Content-Type: text/plain; charset=\"" . get_settings('blog_charset') . "\"\n";
}
return @mail($to, $subject, $message, $headers);
}
endif;
if ( !function_exists('wp_login') ) :
function wp_login($username, $password, $already_md5 = false) {
global $wpdb, $error;
if ( '' == $username )
return false;
if ( '' == $password ) {
$error = __('<strong>Error</strong>: The password field is empty.');
return false;
}
$login = get_userdatabylogin($username);
//$login = $wpdb->get_row("SELECT ID, user_login, user_pass FROM $wpdb->users WHERE user_login = '$username'");
if (!$login) {
$error = __('<strong>Error</strong>: Wrong username.');
return false;
} else {
// If the password is already_md5, it has been double hashed.
// Otherwise, it is plain text.
if ( ($already_md5 && md5($login->user_pass) == $password) || ($login->user_login == $username && $login->user_pass == md5($password)) ) {
return true;
} else {
$error = __('<strong>Error</strong>: Incorrect password.');
$pwd = '';
return false;
}
}
}
endif;
if ( !function_exists('is_user_logged_in') ) :
function is_user_logged_in() {
$user = wp_get_current_user();
if ( $user->id == 0 )
return false;
return true;
}
endif;
if ( !function_exists('auth_redirect') ) :
function auth_redirect() {
// Checks if a user is logged in, if not redirects them to the login page
if ( (!empty($_COOKIE[USER_COOKIE]) &&
!wp_login($_COOKIE[USER_COOKIE], $_COOKIE[PASS_COOKIE], true)) ||
(empty($_COOKIE[USER_COOKIE])) ) {
nocache_headers();
header('Location: ' . get_settings('siteurl') . '/wp-login.php?redirect_to=' . urlencode($_SERVER['REQUEST_URI']));
exit();
}
}
endif;
if ( !function_exists('check_admin_referer') ) :
function check_admin_referer($action = -1) {
global $pagenow;
$adminurl = strtolower(get_settings('siteurl')).'/wp-admin';
$referer = strtolower($_SERVER['HTTP_REFERER']);
if ( !wp_verify_nonce($_REQUEST['_wpnonce'], $action) ) {
$html = "<!DOCTYPE html PUBLIC '-//W3C//DTD XHTML 1.0 Strict//EN' 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd'>\n<html xmlns='http://www.w3.org/1999/xhtml' lang='en' xml:lang='en'>\n\n";
$html .= "<head>\n\t<title>" . __('WordPress Confirmation') . "</title>\n";
$html .= "</head>\n<body>\n";
if ( $_POST ) {
$q = http_build_query($_POST);
$q = explode( ini_get('arg_separator.output'), $q);
$html .= "\t<form method='post' action='$pagenow'>\n";
foreach ( (array) $q as $a ) {
$v = substr(strstr($a, '='), 1);
$k = substr($a, 0, -(strlen($v)+1));
$html .= "\t\t<input type='hidden' name='" . wp_specialchars( urldecode($k), 1 ) . "' value='" . wp_specialchars( urldecode($v), 1 ) . "' />\n";
}
$html .= "\t\t<input type='hidden' name='_wpnonce' value='" . wp_create_nonce($action) . "' />\n";
$html .= "\t\t<p>" . __('Are you sure you want to do this?') . "</p>\n\t\t<p><a href='$adminurl'>No</a> <input type='submit' value='" . __('Yes') . "' /></p>\n\t</form>\n";
} else {
$html .= "\t<p>" . __('Are you sure you want to do this?') . "</p>\n\t\t<p><a href='$adminurl'>No</a> <a href='" . add_query_arg( '_wpnonce', wp_create_nonce($action), $_SERVER['REQUEST_URI'] ) . "'>" . __('Yes') . "</a></p>\n";
}
$html .= "</body>\n</html>";
die($html);
}
do_action('check_admin_referer');
}endif;
if ( !function_exists('check_ajax_referer') ) :
function check_ajax_referer() {
$cookie = explode('; ', urldecode(empty($_POST['cookie']) ? $_GET['cookie'] : $_POST['cookie'])); // AJAX scripts must pass cookie=document.cookie
foreach ( $cookie as $tasty ) {
if ( false !== strpos($tasty, USER_COOKIE) )
$user = substr(strstr($tasty, '='), 1);
if ( false !== strpos($tasty, PASS_COOKIE) )
$pass = substr(strstr($tasty, '='), 1);
}
if ( !wp_login( $user, $pass, true ) )
die('-1');
do_action('check_ajax_referer');
}
endif;
// Cookie safe redirect. Works around IIS Set-Cookie bug.
// http://support.microsoft.com/kb/q176113/
if ( !function_exists('wp_redirect') ) :
function wp_redirect($location) {
global $is_IIS;
$location = str_replace( array("\n", "\r"), '', $location);
if ($is_IIS)
header("Refresh: 0;url=$location");
else
header("Location: $location");
}
endif;
if ( !function_exists('wp_get_cookie_login') ):
function wp_get_cookie_login() {
if ( empty($_COOKIE[USER_COOKIE]) || empty($_COOKIE[PASS_COOKIE]) )
return false;
return array('login' => $_COOKIE[USER_COOKIE], 'password' => $_COOKIE[PASS_COOKIE]);
}
endif;
if ( !function_exists('wp_setcookie') ) :
function wp_setcookie($username, $password, $already_md5 = false, $home = '', $siteurl = '', $remember = false) {
if ( !$already_md5 )
$password = md5( md5($password) ); // Double hash the password in the cookie.
if ( empty($home) )
$cookiepath = COOKIEPATH;
else
$cookiepath = preg_replace('|https?://[^/]+|i', '', $home . '/' );
if ( empty($siteurl) ) {
$sitecookiepath = SITECOOKIEPATH;
$cookiehash = COOKIEHASH;
} else {
$sitecookiepath = preg_replace('|https?://[^/]+|i', '', $siteurl . '/' );
$cookiehash = md5($siteurl);
}
if ( $remember )
$expire = time() + 31536000;
else
$expire = 0;
setcookie(USER_COOKIE, $username, $expire, $cookiepath, COOKIE_DOMAIN);
setcookie(PASS_COOKIE, $password, $expire, $cookiepath, COOKIE_DOMAIN);
if ( $cookiepath != $sitecookiepath ) {
setcookie(USER_COOKIE, $username, $expire, $sitecookiepath, COOKIE_DOMAIN);
setcookie(PASS_COOKIE, $password, $expire, $sitecookiepath, COOKIE_DOMAIN);
}
}
endif;
if ( !function_exists('wp_clearcookie') ) :
function wp_clearcookie() {
setcookie(USER_COOKIE, ' ', time() - 31536000, COOKIEPATH, COOKIE_DOMAIN);
setcookie(PASS_COOKIE, ' ', time() - 31536000, COOKIEPATH, COOKIE_DOMAIN);
setcookie(USER_COOKIE, ' ', time() - 31536000, SITECOOKIEPATH, COOKIE_DOMAIN);
setcookie(PASS_COOKIE, ' ', time() - 31536000, SITECOOKIEPATH, COOKIE_DOMAIN);
}
endif;
if ( ! function_exists('wp_notify_postauthor') ) :
function wp_notify_postauthor($comment_id, $comment_type='') {
global $wpdb;
$comment = get_comment($comment_id);
$post = get_post($comment->comment_post_ID);
$user = get_userdata( $post->post_author );
if ('' == $user->user_email) return false; // If there's no email to send the comment to
$comment_author_domain = gethostbyaddr($comment->comment_author_IP);
$blogname = get_settings('blogname');
if ( empty( $comment_type ) ) $comment_type = 'comment';
if ('comment' == $comment_type) {
$notify_message = sprintf( __('New comment on your post #%1$s "%2$s"'), $comment->comment_post_ID, $post->post_title ) . "\r\n";
$notify_message .= sprintf( __('Author : %1$s (IP: %2$s , %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";
$notify_message .= sprintf( __('E-mail : %s'), $comment->comment_author_email ) . "\r\n";
$notify_message .= sprintf( __('URI : %s'), $comment->comment_author_url ) . "\r\n";
$notify_message .= sprintf( __('Whois : http://ws.arin.net/cgi-bin/whois.pl?queryinput=%s'), $comment->comment_author_IP ) . "\r\n";
$notify_message .= __('Comment: ') . "\r\n" . $comment->comment_content . "\r\n\r\n";
$notify_message .= __('You can see all comments on this post here: ') . "\r\n";
$subject = sprintf( __('[%1$s] Comment: "%2$s"'), $blogname, $post->post_title );
} elseif ('trackback' == $comment_type) {
$notify_message = sprintf( __('New trackback on your post #%1$s "%2$s"'), $comment->comment_post_ID, $post->post_title ) . "\r\n";
$notify_message .= sprintf( __('Website: %1$s (IP: %2$s , %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";
$notify_message .= sprintf( __('URI : %s'), $comment->comment_author_url ) . "\r\n";
$notify_message .= __('Excerpt: ') . "\r\n" . $comment->comment_content . "\r\n\r\n";
$notify_message .= __('You can see all trackbacks on this post here: ') . "\r\n";
$subject = sprintf( __('[%1$s] Trackback: "%2$s"'), $blogname, $post->post_title );
} elseif ('pingback' == $comment_type) {
$notify_message = sprintf( __('New pingback on your post #%1$s "%2$s"'), $comment->comment_post_ID, $post->post_title ) . "\r\n";
$notify_message .= sprintf( __('Website: %1$s (IP: %2$s , %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";
$notify_message .= sprintf( __('URI : %s'), $comment->comment_author_url ) . "\r\n";
$notify_message .= __('Excerpt: ') . "\r\n" . sprintf('[...] %s [...]', $comment->comment_content ) . "\r\n\r\n";
$notify_message .= __('You can see all pingbacks on this post here: ') . "\r\n";
$subject = sprintf( __('[%1$s] Pingback: "%2$s"'), $blogname, $post->post_title );
}
$notify_message .= get_permalink($comment->comment_post_ID) . "#comments\r\n\r\n";
$notify_message .= sprintf( __('To delete this comment, visit: %s'), get_settings('siteurl').'/wp-admin/comment.php?action=confirmdeletecomment&p='.$comment->comment_post_ID."&comment=$comment_id" ) . "\r\n";
$notify_message .= sprintf( __('To mark this comment as spam, visit: %s'), get_settings('siteurl').'/wp-admin/comment.php?action=confirmdeletecomment&delete_type=spam&p='.$comment->comment_post_ID."&comment=$comment_id" ) . "\r\n";
$wp_email = 'wordpress@' . preg_replace('#^www\.#', '', strtolower($_SERVER['SERVER_NAME']));
if ( '' == $comment->comment_author ) {
$from = "From: \"$blogname\" <$wp_email>";
if ( '' != $comment->comment_author_email )
$reply_to = "Reply-To: $comment->comment_author_email";
} else {
$from = "From: \"$comment->comment_author\" <$wp_email>";
if ( '' != $comment->comment_author_email )
$reply_to = "Reply-To: \"$comment->comment_author_email\" <$comment->comment_author_email>";
}
$message_headers = "MIME-Version: 1.0\n"
. "$from\n"
. "Content-Type: text/plain; charset=\"" . get_settings('blog_charset') . "\"\n";
if ( isset($reply_to) )
$message_headers .= $reply_to . "\n";
$notify_message = apply_filters('comment_notification_text', $notify_message, $comment_id);
$subject = apply_filters('comment_notification_subject', $subject, $comment_id);
$message_headers = apply_filters('comment_notification_headers', $message_headers, $comment_id);
@wp_mail($user->user_email, $subject, $notify_message, $message_headers);
return true;
}
endif;
/* wp_notify_moderator
notifies the moderator of the blog (usually the admin)
about a new comment that waits for approval
always returns true
*/
if ( !function_exists('wp_notify_moderator') ) :
function wp_notify_moderator($comment_id) {
global $wpdb;
if( get_settings( "moderation_notify" ) == 0 )
return true;
$comment = $wpdb->get_row("SELECT * FROM $wpdb->comments WHERE comment_ID='$comment_id' LIMIT 1");
$post = $wpdb->get_row("SELECT * FROM $wpdb->posts WHERE ID='$comment->comment_post_ID' LIMIT 1");
$comment_author_domain = gethostbyaddr($comment->comment_author_IP);
$comments_waiting = $wpdb->get_var("SELECT count(comment_ID) FROM $wpdb->comments WHERE comment_approved = '0'");
$notify_message = sprintf( __('A new comment on the post #%1$s "%2$s" is waiting for your approval'), $post->ID, $post->post_title ) . "\r\n";
$notify_message .= get_permalink($comment->comment_post_ID) . "\r\n\r\n";
$notify_message .= sprintf( __('Author : %1$s (IP: %2$s , %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";
$notify_message .= sprintf( __('E-mail : %s'), $comment->comment_author_email ) . "\r\n";
$notify_message .= sprintf( __('URI : %s'), $comment->comment_author_url ) . "\r\n";
$notify_message .= sprintf( __('Whois : http://ws.arin.net/cgi-bin/whois.pl?queryinput=%s'), $comment->comment_author_IP ) . "\r\n";
$notify_message .= __('Comment: ') . "\r\n" . $comment->comment_content . "\r\n\r\n";
$notify_message .= sprintf( __('To approve this comment, visit: %s'), get_settings('siteurl').'/wp-admin/comment.php?action=mailapprovecomment&p='.$comment->comment_post_ID."&comment=$comment_id" ) . "\r\n";
$notify_message .= sprintf( __('To delete this comment, visit: %s'), get_settings('siteurl').'/wp-admin/comment.php?action=confirmdeletecomment&p='.$comment->comment_post_ID."&comment=$comment_id" ) . "\r\n";
$notify_message .= sprintf( __('To mark this comment as spam, visit: %s'), get_settings('siteurl').'/wp-admin/comment.php?action=confirmdeletecomment&delete_type=spam&p='.$comment->comment_post_ID."&comment=$comment_id" ) . "\r\n";
$notify_message .= sprintf( __('Currently %s comments are waiting for approval. Please visit the moderation panel:'), $comments_waiting ) . "\r\n";
$notify_message .= get_settings('siteurl') . "/wp-admin/moderation.php\r\n";
$subject = sprintf( __('[%1$s] Please moderate: "%2$s"'), get_settings('blogname'), $post->post_title );
$admin_email = get_settings('admin_email');
$notify_message = apply_filters('comment_moderation_text', $notify_message, $comment_id);
$subject = apply_filters('comment_moderation_subject', $subject, $comment_id);
@wp_mail($admin_email, $subject, $notify_message);
return true;
}
endif;
if ( !function_exists('wp_new_user_notification') ) :
function wp_new_user_notification($user_id, $plaintext_pass = '') {
$user = new WP_User($user_id);
$user_login = stripslashes($user->user_login);
$user_email = stripslashes($user->user_email);
$message = sprintf(__('New user registration on your blog %s:'), get_settings('blogname')) . "\r\n\r\n";
$message .= sprintf(__('Username: %s'), $user_login) . "\r\n\r\n";
$message .= sprintf(__('E-mail: %s'), $user_email) . "\r\n";
@wp_mail(get_settings('admin_email'), sprintf(__('[%s] New User Registration'), get_settings('blogname')), $message);
if ( empty($plaintext_pass) )
return;
$message = sprintf(__('Username: %s'), $user_login) . "\r\n";
$message .= sprintf(__('Password: %s'), $plaintext_pass) . "\r\n";
$message .= get_settings('siteurl') . "/wp-login.php\r\n";
wp_mail($user_email, sprintf(__('[%s] Your username and password'), get_settings('blogname')), $message);
}
endif;
if ( !function_exists('wp_verify_nonce') ) :
function wp_verify_nonce($nonce, $action = -1) {
$user = wp_get_current_user();
$uid = $user->id;
$i = ceil(time() / 43200);
//Allow for expanding range, but only do one check if we can
if( substr(md5($i . DB_PASSWORD . $action . $uid), -12, 10) == $nonce || substr(md5(($i - 1) . DB_PASSWORD . $action . $uid), -12, 10) == $nonce )
return true;
return false;
}
endif;
if ( !function_exists('wp_create_nonce') ) :
function wp_create_nonce($action = -1) {
$user = wp_get_current_user();
$uid = $user->id;
$i = ceil(time() / 43200);
return substr(md5($i . DB_PASSWORD . $action . $uid), -12, 10);
}
endif;
?>
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