Ticket #8833: 8833.5.patch

wp-includes/functions.php

@@ -37 +37 @@
         if( 'U' == $dateformatstring )
                 return $i;
 
-        if ( $translate)
-            return date_i18n( $dateformatstring, $i );
+        if ( $translate )
+                return date_i18n( $dateformatstring, $i );
         else
-            return date( $dateformatstring, $i );
+                return date( $dateformatstring, $i );
 }
 
 /**
@@ -1694 +1694 @@
 }
 
 /**
+ * Get the time-dependent variable for nonce creation.
+ *
+ * A nonce has a lifespan of two ticks. Nonces in their second tick may be
+ * updated, e.g. by autosave.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_nonce_tick()
+ *
+ * @package WordPress
+ * @subpackage Security
+ * @since 2.8.0
+ *
+ * @return int
+ */
+function _wp_nonce_tick() {
+        $nonce_life = apply_filters('nonce_life', 86400);
+
+        return ceil( time() / ( $nonce_life / 2 ) );
+}
+
+/**
+ * Verify that correct nonce was used with time limit.
+ *
+ * The user is given an amount of time to use the token, so therefore, since the
+ * UID and $action remain the same, the independent variable is the time.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_verify_nonce()
+ *
+ * @package WordPress
+ * @subpackage Security
+ * @since 2.8.0
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-wp_verify_nonce" filter.
+ * @param string $nonce Nonce that was used in the form to verify
+ * @param string|int $action Should give context to what is taking place and be the same when nonce was created.
+ * @return bool Whether the nonce check passed or failed.
+ */
+function _wp_verify_nonce( $existing = null, $nonce, $action = -1 ) {
+        if ( null !== $existing )
+                return $existing;
+
+        $user = wp_get_current_user();
+        $uid = (int) $user->id;
+
+        $i = wp_nonce_tick();
+
+        // Nonce generated 0-12 hours ago
+        if ( substr(wp_hash($i . $action . $uid, 'nonce'), -12, 10) == $nonce )
+                return 1;
+        // Nonce generated 12-24 hours ago
+        if ( substr(wp_hash(($i - 1) . $action . $uid, 'nonce'), -12, 10) == $nonce )
+                return 2;
+        // Invalid nonce
+        return false;
+}
+
+/**
+ * Creates a random, one time use token.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_create_nonce()
+ *
+ * @package WordPress
+ * @subpackage Security
+ * @since 2.8.0
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-wp_create_nonce" filter.
+ * @param string|int $action Scalar value to add context to the nonce.
+ * @return string The one use form token
+ */
+function _wp_create_nonce( $existing = null, $action = -1 ) {
+        if ( null !== $existing )
+                return $existing;
+
+        $user = wp_get_current_user();
+        $uid = (int) $user->id;
+
+        $i = wp_nonce_tick();
+
+        return substr( wp_hash($i . $action . $uid, 'nonce'), -12, 10 );
+}
+
+/**
  * Retrieve URL with nonce added to URL query.
  *
  * @package WordPress
@@ -1755 +1839 @@
 }
 
 /**
+ * Get salt to add to hashes to help prevent attacks.
+ *
+ * The secret key is located in two places: the database in case the secret key
+ * isn't defined in the second place, which is in the wp-config.php file. If you
+ * are going to set the secret key, then you must do so in the wp-config.php
+ * file.
+ *
+ * The secret key in the database is randomly generated and will be appended to
+ * the secret key that is in wp-config.php file in some instances. It is
+ * important to have the secret key defined or changed in wp-config.php.
+ *
+ * If you have installed WordPress 2.5 or later, then you will have the
+ * SECRET_KEY defined in the wp-config.php already. You will want to change the
+ * value in it because hackers will know what it is. If you have upgraded to
+ * WordPress 2.5 or later version from a version before WordPress 2.5, then you
+ * should add the constant to your wp-config.php file.
+ *
+ * Below is an example of how the SECRET_KEY constant is defined with a value.
+ * You must not copy the below example and paste into your wp-config.php. If you
+ * need an example, then you can have a
+ * {@link https://api.wordpress.org/secret-key/1.1/ secret key created} for you.
+ *
+ * <code>
+ * define('SECRET_KEY', 'mAry1HadA15|\/|b17w55w1t3asSn09w');
+ * </code>
+ *
+ * Salting passwords helps against tools which has stored hashed values of
+ * common dictionary strings. The added values makes it harder to crack if given
+ * salt string is not weak.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_salt()
+ *
+ * @package WordPress
+ * @subpackage Security
+ * @since 2.8.0
+ * @link https://api.wordpress.org/secret-key/1.1/ Create a Secret Key for wp-config.php
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-wp_salt" filter.
+ * @param string $scheme Auth scheme.
+ * @return string Salt value from either 'SECRET_KEY' or 'secret' option
+ */
+function _wp_salt( $existing = null, $scheme = 'auth' ) {
+        if ( null !== $existing )
+                return $existing;
+
+        global $wp_default_secret_key;
+        $secret_key = '';
+        if ( defined('SECRET_KEY') && ('' != SECRET_KEY) && ( $wp_default_secret_key != SECRET_KEY) )
+                $secret_key = SECRET_KEY;
+
+        if ( 'auth' == $scheme ) {
+                if ( defined('AUTH_KEY') && ('' != AUTH_KEY) && ( $wp_default_secret_key != AUTH_KEY) )
+                        $secret_key = AUTH_KEY;
+
+                if ( defined('AUTH_SALT') ) {
+                        $salt = AUTH_SALT;
+                } elseif ( defined('SECRET_SALT') ) {
+                        $salt = SECRET_SALT;
+                } else {
+                        $salt = get_option('auth_salt');
+                        if ( empty($salt) ) {
+                                $salt = wp_generate_password(64);
+                                update_option('auth_salt', $salt);
+                        }
+                }
+        } elseif ( 'secure_auth' == $scheme ) {
+                if ( defined('SECURE_AUTH_KEY') && ('' != SECURE_AUTH_KEY) && ( $wp_default_secret_key != SECURE_AUTH_KEY) )
+                        $secret_key = SECURE_AUTH_KEY;
+
+                if ( defined('SECURE_AUTH_SALT') ) {
+                        $salt = SECURE_AUTH_SALT;
+                } else {
+                        $salt = get_option('secure_auth_salt');
+                        if ( empty($salt) ) {
+                                $salt = wp_generate_password(64);
+                                update_option('secure_auth_salt', $salt);
+                        }
+                }
+        } elseif ( 'logged_in' == $scheme ) {
+                if ( defined('LOGGED_IN_KEY') && ('' != LOGGED_IN_KEY) && ( $wp_default_secret_key != LOGGED_IN_KEY) )
+                        $secret_key = LOGGED_IN_KEY;
+
+                if ( defined('LOGGED_IN_SALT') ) {
+                        $salt = LOGGED_IN_SALT;
+                } else {
+                        $salt = get_option('logged_in_salt');
+                        if ( empty($salt) ) {
+                                $salt = wp_generate_password(64);
+                                update_option('logged_in_salt', $salt);
+                        }
+                }
+        } elseif ( 'nonce' == $scheme ) {
+                if ( defined('NONCE_KEY') && ('' != NONCE_KEY) && ( $wp_default_secret_key != NONCE_KEY) )
+                        $secret_key = NONCE_KEY;
+
+                if ( defined('NONCE_SALT') ) {
+                        $salt = NONCE_SALT;
+                } else {
+                        $salt = get_option('nonce_salt');
+                        if ( empty($salt) ) {
+                                $salt = wp_generate_password(64);
+                                update_option('nonce_salt', $salt);
+                        }
+                }
+        } else {
+                // ensure each auth scheme has its own unique salt
+                $salt = hash_hmac('md5', $scheme, $secret_key);
+        }
+
+        return apply_filters('salt', $secret_key . $salt, $scheme);
+}
+
+/**
+ * Get hash of given string.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_hash()
+ *
+ * @package WordPress
+ * @subpackage Security
+ * @since 2.8.0
+ * @uses wp_salt() Get WordPress salt
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-wp_hash" filter.
+ * @param string $data Plain text to hash
+ * @return string Hash of $data
+ */
+function _wp_hash( $existing = null, $data, $scheme = 'auth' ) {
+        if ( null !== $existing )
+                return $existing;
+
+        $salt = wp_salt($scheme);
+
+        return hash_hmac('md5', $data, $salt);
+}
+
+/**
+ * Create a hash (encrypt) of a plain text password.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_hash_password()
+ *
+ * @package WordPress
+ * @subpackage Security
+ * @since 2.8.0
+ * @global object $wp_hasher PHPass object
+ * @uses PasswordHash::HashPassword
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-wp_hash_password" filter.
+ * @param string $password Plain text user password to hash
+ * @return string The hash string of the password
+ */
+function _wp_hash_password( $existing = null, $password ) {
+        if ( null !== $existing )
+                return $existing;
+
+        global $wp_hasher;
+
+        if ( empty($wp_hasher) ) {
+                require_once( ABSPATH . 'wp-includes/class-phpass.php');
+                // By default, use the portable hash from phpass
+                $wp_hasher = new PasswordHash(8, TRUE);
+        }
+
+        return $wp_hasher->HashPassword($password);
+}
+
+/**
+ * Checks the plaintext password against the encrypted password.
+ *
+ * Maintains compatibility between old version and the new cookie authentication
+ * protocol using PHPass library. The $hash parameter is the encrypted password
+ * and the function compares the plain text password when encypted similarly
+ * against the already encrypted password to see if they match.
+ *
+ * For integration with other applications, this function can be overwritten to
+ * instead use the other package password checking algorithm.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_check_password()
+ *
+ * @package WordPress
+ * @subpackage Security
+ * @since 2.8.0
+ * @global object $wp_hasher PHPass object used for checking the password
+ *       against the $hash + $password
+ * @uses PasswordHash::CheckPassword
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-wp_check_password" filter.
+ * @param string $password Plaintext user's password
+ * @param string $hash Hash of the user's password to check against.
+ * @return bool False, if the $password does not match the hashed password
+ */
+function _wp_check_password( $existing = null, $password, $hash, $user_id = '' ) {
+        if ( null !== $existing )
+                return $existing;
+
+        global $wp_hasher;
+
+        // If the hash is still md5...
+        if ( strlen($hash) <= 32 ) {
+                $check = ( $hash == md5($password) );
+                if ( $check && $user_id ) {
+                        // Rehash using new hash.
+                        wp_set_password($password, $user_id);
+                        $hash = wp_hash_password($password);
+                }
+
+                return apply_filters('check_password', $check, $password, $hash, $user_id);
+        }
+
+        // If the stored hash is longer than an MD5, presume the
+        // new style phpass portable hash.
+        if ( empty($wp_hasher) ) {
+                require_once( ABSPATH . 'wp-includes/class-phpass.php');
+                // By default, use the portable hash from phpass
+                $wp_hasher = new PasswordHash(8, TRUE);
+        }
+
+        $check = $wp_hasher->CheckPassword($password, $hash);
+
+        return apply_filters('check_password', $check, $password, $hash, $user_id);
+}
+
+/**
+ * Generates a random password drawn from the defined set of characters.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_generate_password()
+ *
+ * @since 2.8.0
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-wp_generate_password" filter.
+ * @param int $length The length of password to generate
+ * @param bool $special_chars Whether to include standard special characters
+ * @return string The random password
+ **/
+function _wp_generate_password( $existing = null, $length = 12, $special_chars = true ) {
+        if ( null !== $existing )
+                return $existing;
+
+        $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
+        if ( $special_chars )
+                $chars .= '!@#$%^&*()';
+
+        $password = '';
+        for ( $i = 0; $i < $length; $i++ )
+                $password .= substr($chars, wp_rand(0, strlen($chars) - 1), 1);
+        return $password;
+}
+
+/**
+ * Generates a random number
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_rand()
+ *
+ * @since 2.8.0
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-wp_rand" filter.
+ * @param int $min Lower limit for the generated number (optional, default is 0)
+ * @param int $max Upper limit for the generated number (optional, default is 4294967295)
+ * @return int A random number between min and max
+ */
+function _wp_rand( $existing = null, $min = 0, $max = 0 ) {
+        if ( null !== $existing )
+                return $existing;
+
+        global $rnd_value;
+
+        $seed = get_transient('random_seed');
+
+        // Reset $rnd_value after 14 uses
+        // 32(md5) + 40(sha1) + 40(sha1) / 8 = 14 random numbers from $rnd_value
+        if ( strlen($rnd_value) < 8 ) {
+                $rnd_value = md5( uniqid(microtime() . mt_rand(), true ) . $seed );
+                $rnd_value .= sha1($rnd_value);
+                $rnd_value .= sha1($rnd_value . $seed);
+                $seed = md5($seed . $rnd_value);
+                set_transient('random_seed', $seed);
+        }
+
+        // Take the first 8 digits for our value
+        $value = substr($rnd_value, 0, 8);
+
+        // Strip the first eight, leaving the remainder for the next call to wp_rand().
+        $rnd_value = substr($rnd_value, 8);
+
+        $value = abs(hexdec($value));
+
+        // Reduce the value to be within the min - max range
+        // 4294967295 = 0xffffffff = max random number
+        if ( $max != 0 )
+                $value = $min + (($max - $min + 1) * ($value / (4294967295 + 1)));
+
+        return abs(intval($value));
+}
+
+/**
  * Retrieve or display referer hidden field for forms.
  *
  * The referer link is the current Request URI from the server super global. The
@@ -1837 +2221 @@
 }
 
 /**
+ * Makes sure that a user was referred from another admin page.
+ *
+ * To avoid security exploits.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see check_admin_referer()
+ *
+ * @since 2.8.0
+ * @uses do_action() Calls 'check_admin_referer' on $action.
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-check_admin_referer" filter.
+ * @param string $action Action nonce
+ * @param string $query_arg where to look for nonce in $_REQUEST (since 2.5)
+ */
+function _check_admin_referer( $existing = null, $action = -1, $query_arg = '_wpnonce' ) {
+        if ( null !== $existing )
+                return $existing;
+
+        $adminurl = strtolower(admin_url());
+        $referer = strtolower(wp_get_referer());
+        $result = isset($_REQUEST[$query_arg]) ? wp_verify_nonce($_REQUEST[$query_arg], $action) : false;
+        if ( !$result && !(-1 == $action && strpos($referer, $adminurl) !== false) ) {
+                wp_nonce_ays($action);
+                die();
+        }
+        do_action('check_admin_referer', $action, $result);
+        return $result;
+}
+
+/**
+ * Verifies the AJAX request to prevent processing requests external of the blog.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see check_ajax_referer()
+ *
+ * @since 2.8.0
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-check_ajax_referer" filter.
+ * @param string $action Action nonce
+ * @param string $query_arg where to look for nonce in $_REQUEST (since 2.5)
+ */
+function _check_ajax_referer( $existing = null, $action = -1, $query_arg = false, $die = true ) {
+        if ( null !== $existing )
+                return $existing;
+
+        if ( $query_arg )
+                $nonce = $_REQUEST[$query_arg];
+        else
+                $nonce = $_REQUEST['_ajax_nonce'] ? $_REQUEST['_ajax_nonce'] : $_REQUEST['_wpnonce'];
+
+        $result = wp_verify_nonce( $nonce, $action );
+
+        if ( $die && false == $result )
+                die('-1');
+
+        do_action('check_ajax_referer', $action, $result);
+
+        return $result;
+}
+
+/**
+ * Redirects to another page, with a workaround for the IIS Set-Cookie bug.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_redirect()
+ *
+ * @link http://support.microsoft.com/kb/q176113/
+ * @since 2.8.0
+ * @uses apply_filters() Calls 'wp_redirect' hook on $location and $status.
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-wp_redirect" filter.
+ * @param string $location The path to redirect to
+ * @param int $status Status code to use
+ * @return bool False if $location is not set
+ */
+function _wp_redirect( $existing = null, $location, $status = 302 ) {
+        if ( null !== $existing )
+                return $existing;
+
+        global $is_IIS;
+
+        $location = apply_filters('wp_redirect', $location, $status);
+        $status = apply_filters('wp_redirect_status', $status, $location);
+
+        if ( !$location ) // allows the wp_redirect filter to cancel a redirect
+                return false;
+
+        $location = wp_sanitize_redirect($location);
+
+        if ( $is_IIS ) {
+                header("Refresh: 0;url=$location");
+        } else {
+                if ( php_sapi_name() != 'cgi-fcgi' )
+                        status_header($status); // This causes problems on IIS and some FastCGI setups
+                header("Location: $location");
+        }
+}
+
+/**
+ * Sanitizes a URL for use in a redirect.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_sanitize_redirect()
+ *
+ * @since 2.8.0
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-wp_sanitize_redirect" filter.
+ * @param string $location The path to redirect to
+ * @return string redirect-sanitized URL
+ **/
+function _wp_sanitize_redirect( $existing = null, $location ) {
+        if ( null !== $existing )
+                return $existing;
+
+        $location = preg_replace('|[^a-z0-9-~+_.?#=&;,/:%!]|i', '', $location); 
+        $location = wp_kses_no_null($location);
+
+        // remove %0d and %0a from location
+        $strip = array('%0d', '%0a');
+        $found = true;
+        while ($found) {
+                $found = false;
+                foreach( (array) $strip as $val ) {
+                        while(strpos($location, $val) !== false) {
+                                $found = true;
+                                $location = str_replace($val, '', $location);
+                        }
+                }
+        }
+        return $location;
+}
+
+/**
+ * Performs a safe (local) redirect, using wp_redirect().
+ *
+ * Checks whether the $location is using an allowed host, if it has an absolute
+ * path. A plugin can therefore set or remove allowed host(s) to or from the
+ * list.
+ *
+ * If the host is not allowed, then the redirect is to wp-admin on the siteurl
+ * instead. This prevents malicious redirects which redirect to another host,
+ * but only used in a few places.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_safe_redirect()
+ *
+ * @since 2.8.0
+ * @uses apply_filters() Calls 'allowed_redirect_hosts' on an array containing
+ *              WordPress host string and $location host string.
+ *
+ * @return void Does not return anything
+ **/
+function _wp_safe_redirect( $location, $status = 302 ) {
+        // Need to look at the URL the way it will end up in wp_redirect()
+        $location = wp_sanitize_redirect($location);
+
+        // browsers will assume 'http' is your protocol, and will obey a redirect to a URL starting with '//'
+        if ( substr($location, 0, 2) == '//' )
+                $location = 'http:' . $location;
+
+        // In PHP5 parse_url may fail if the URL query part contains http://, bug #38143
+        $test = ( $cut = strpos($location, '?') ) ? substr( $location, 0, $cut ) : $location;
+
+        $lp  = parse_url($test);
+        $wpp = parse_url(get_option('home'));
+
+        $allowed_hosts = (array) apply_filters('allowed_redirect_hosts', array($wpp['host']), isset($lp['host']) ? $lp['host'] : '');
+
+        if ( isset($lp['host']) && ( !in_array($lp['host'], $allowed_hosts) && $lp['host'] != strtolower($wpp['host'])) )
+                $location = admin_url();
+
+        wp_redirect($location, $status);
+}
+
+/**
  * Recursive directory creation based on full path.
  *
  * Will attempt to set permissions on folders.
@@ -3146 +3705 @@
         return $structure;
 }
 
+/**
+ * Send mail, similar to PHP's mail
+ *
+ * A true return value does not automatically mean that the user received the
+ * email successfully. It just only means that the method used was able to
+ * process the request without any errors.
+ *
+ * Using the two 'wp_mail_from' and 'wp_mail_from_name' hooks allow from
+ * creating a from address like 'Name <email@address.com>' when both are set. If
+ * just 'wp_mail_from' is set, then just the email address will be used with no
+ * name.
+ *
+ * The default content type is 'text/plain' which does not allow using HTML.
+ * However, you can set the content type of the email by using the
+ * 'wp_mail_content_type' filter.
+ *
+ * The default charset is based on the charset used on the blog. The charset can
+ * be set using the 'wp_mail_charset' filter.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_mail()
+ *
+ * @since 2.8.0
+ * @uses apply_filters() Calls 'wp_mail' hook on an array of all of the parameters.
+ * @uses apply_filters() Calls 'wp_mail_from' hook to get the from email address.
+ * @uses apply_filters() Calls 'wp_mail_from_name' hook to get the from address name.
+ * @uses apply_filters() Calls 'wp_mail_content_type' hook to get the email content type.
+ * @uses apply_filters() Calls 'wp_mail_charset' hook to get the email charset
+ * @uses do_action_ref_array() Calls 'phpmailer_init' hook on the reference to
+ *              phpmailer object.
+ * @uses PHPMailer
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-wp_mail" filter.
+ * @param string $to Email address to send message
+ * @param string $subject Email subject
+ * @param string $message Message contents
+ * @param string|array $headers Optional. Additional headers.
+ * @param string|array $attachments Optional. Files to attach.
+ * @return bool Whether the email contents were sent successfully.
+ */
+function _wp_mail( $existing = null, $to, $subject, $message, $headers = '', $attachments = array() ) {
+        if ( null !== $existing )
+                return $existing;
 
+        // Compact the input, apply the filters, and extract them back out
+        extract( apply_filters( 'wp_mail', compact( 'to', 'subject', 'message', 'headers', 'attachments' ) ) );
+
+        if ( !is_array($attachments) )
+                $attachments = explode( "\n", $attachments );
+
+        global $phpmailer;
+
+        // (Re)create it, if it's gone missing
+        if ( !is_object( $phpmailer ) || !is_a( $phpmailer, 'PHPMailer' ) ) {
+                require_once ABSPATH . WPINC . '/class-phpmailer.php';
+                require_once ABSPATH . WPINC . '/class-smtp.php';
+                $phpmailer = new PHPMailer();
+        }
+
+        // Headers
+        if ( empty( $headers ) ) {
+                $headers = array();
+        } else {
+                if ( !is_array( $headers ) ) {
+                        // Explode the headers out, so this function can take both
+                        // string headers and an array of headers.
+                        $tempheaders = (array) explode( "\n", $headers );
+                } else {
+                        $tempheaders = $headers;
+                }
+                $headers = array();
+
+                // If it's actually got contents
+                if ( !empty( $tempheaders ) ) {
+                        // Iterate through the raw headers
+                        foreach ( (array) $tempheaders as $header ) {
+                                if ( strpos($header, ':') === false ) {
+                                        if ( false !== stripos( $header, 'boundary=' ) ) {
+                                                $parts = preg_split('/boundary=/i', trim( $header ) );
+                                                $boundary = trim( str_replace( array( "'", '"' ), '', $parts[1] ) );
+                                        }
+                                        continue;
+                                }
+                                // Explode them out
+                                list( $name, $content ) = explode( ':', trim( $header ), 2 );
+
+                                // Cleanup crew
+                                $name = trim( $name );
+                                $content = trim( $content );
+
+                                // Mainly for legacy -- process a From: header if it's there
+                                if ( 'from' == strtolower($name) ) {
+                                        if ( strpos($content, '<' ) !== false ) {
+                                                // So... making my life hard again?
+                                                $from_name = substr( $content, 0, strpos( $content, '<' ) - 1 );
+                                                $from_name = str_replace( '"', '', $from_name );
+                                                $from_name = trim( $from_name );
+
+                                                $from_email = substr( $content, strpos( $content, '<' ) + 1 );
+                                                $from_email = str_replace( '>', '', $from_email );
+                                                $from_email = trim( $from_email );
+                                        } else {
+                                                $from_email = trim( $content );
+                                        }
+                                } elseif ( 'content-type' == strtolower($name) ) {
+                                        if ( strpos( $content,';' ) !== false ) {
+                                                list( $type, $charset ) = explode( ';', $content );
+                                                $content_type = trim( $type );
+                                                if ( false !== stripos( $charset, 'charset=' ) ) {
+                                                        $charset = trim( str_replace( array( 'charset=', '"' ), '', $charset ) );
+                                                } elseif ( false !== stripos( $charset, 'boundary=' ) ) {
+                                                        $boundary = trim( str_replace( array( 'BOUNDARY=', 'boundary=', '"' ), '', $charset ) );
+                                                        $charset = '';
+                                                }
+                                        } else {
+                                                $content_type = trim( $content );
+                                        }
+                                } elseif ( 'cc' == strtolower($name) ) {
+                                        $cc = explode(",", $content);
+                                } elseif ( 'bcc' == strtolower($name) ) {
+                                        $bcc = explode(",", $content);
+                                } else {
+                                        // Add it to our grand headers array
+                                        $headers[trim( $name )] = trim( $content );
+                                }
+                        }
+                }
+        }
+
+        // Empty out the values that may be set
+        $phpmailer->ClearAddresses();
+        $phpmailer->ClearAllRecipients();
+        $phpmailer->ClearAttachments();
+        $phpmailer->ClearBCCs();
+        $phpmailer->ClearCCs();
+        $phpmailer->ClearCustomHeaders();
+        $phpmailer->ClearReplyTos();
+
+        // From email and name
+        // If we don't have a name from the input headers
+        if ( !isset( $from_name ) ) {
+                $from_name = 'WordPress';
+        }
+
+        /* If we don't have an email from the input headers default to wordpress@$sitename
+         * Some hosts will block outgoing mail from this address if it doesn't exist but
+         * there's no easy alternative. Defaulting to admin_email might appear to be another
+         * option but some hosts may refuse to relay mail from an unknown domain. See
+         * http://trac.wordpress.org/ticket/5007.
+         */
+
+        if ( !isset( $from_email ) ) {
+                // Get the site domain and get rid of www.
+                $sitename = strtolower( $_SERVER['SERVER_NAME'] );
+                if ( substr( $sitename, 0, 4 ) == 'www.' ) {
+                        $sitename = substr( $sitename, 4 );
+                }
+
+                $from_email = 'wordpress@' . $sitename;
+        }
+
+        // Plugin authors can override the potentially troublesome default
+        $phpmailer->From = apply_filters( 'wp_mail_from', $from_email );
+        $phpmailer->FromName = apply_filters( 'wp_mail_from_name', $from_name );
+
+        // Set destination address
+        $phpmailer->AddAddress( $to );
+
+        // Set mail's subject and body
+        $phpmailer->Subject = $subject;
+        $phpmailer->Body = $message;
+
+        // Add any CC and BCC recipients
+        if ( !empty($cc) ) {
+                foreach ( (array) $cc as $recipient ) {
+                        $phpmailer->AddCc( trim($recipient) );
+                }
+        }
+        if ( !empty($bcc) ) {
+                foreach ( (array) $bcc as $recipient) {
+                        $phpmailer->AddBcc( trim($recipient) );
+                }
+        }
+
+        // Set to use PHP's mail()
+        $phpmailer->IsMail();
+
+        // Set Content-Type and charset
+        // If we don't have a content-type from the input headers
+        if ( !isset( $content_type ) ) {
+                $content_type = 'text/plain';
+        }
+
+        $content_type = apply_filters( 'wp_mail_content_type', $content_type );
+
+        $phpmailer->ContentType = $content_type;
+
+        // Set whether it's plaintext or not, depending on $content_type
+        if ( $content_type == 'text/html' ) {
+                $phpmailer->IsHTML( true );
+        }
+
+        // If we don't have a charset from the input headers
+        if ( !isset( $charset ) ) {
+                $charset = get_bloginfo( 'charset' );
+        }
+
+        // Set the content-type and charset
+        $phpmailer->CharSet = apply_filters( 'wp_mail_charset', $charset );
+
+        // Set custom headers
+        if ( !empty( $headers ) ) {
+                foreach( (array) $headers as $name => $content ) {
+                        $phpmailer->AddCustomHeader( sprintf( '%1$s: %2$s', $name, $content ) );
+                }
+                if ( false !== stripos( $content_type, 'multipart' ) && ! empty($boundary) ) {
+                        $phpmailer->AddCustomHeader( sprintf( "Content-Type: %s;\n\t boundary=\"%s\"", $content_type, $boundary ) );
+                }
+        }
+
+        if ( !empty( $attachments ) ) {
+                foreach ( $attachments as $attachment ) {
+                        $phpmailer->AddAttachment($attachment);
+                }
+        }
+
+        do_action_ref_array( 'phpmailer_init', array( &$phpmailer ) );
+
+        // Send!
+        $result = @$phpmailer->Send();
+
+        return $result;
+}
+
+/**
+ * Notify an author of a comment/trackback/pingback to one of their posts.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_notify_postauthor()
+ *
+ * @since 2.8.0
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-wp_notify_postauthor" filter.
+ * @param int $comment_id Comment ID
+ * @param string $comment_type Optional. The comment type either 'comment' (default), 'trackback', or 'pingback'
+ * @return bool False if user email does not exist. True on completion.
+ */
+function _wp_notify_postauthor( $existing = null, $comment_id, $comment_type = '' ) {
+        if ( null !== $existing )
+                return $existing;
+
+        $comment      = get_comment($comment_id);
+        $post         = get_post($comment->comment_post_ID);
+        $user         = get_userdata( $post->post_author );
+        $current_user = wp_get_current_user();
+        
+        if ( $current_user->ID == $user->ID ) return false; // The author moderated a comment on his own post
+
+        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_option('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( __('URL     : %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( __('URL     : %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( __('URL     : %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";
+        $notify_message .= sprintf( __('Delete it: %s'), admin_url("comment.php?action=cdc&c=$comment_id") ) . "\r\n";
+        $notify_message .= sprintf( __('Spam it: %s'), admin_url("comment.php?action=cdc&dt=spam&c=$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>";
+        }
+
+        $message_headers = "$from\n"
+                . "Content-Type: text/plain; charset=\"" . get_option('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;
+}
+
+/**
+ * Notifies the moderator of the blog about a new comment that is awaiting approval.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_notify_moderator()
+ *
+ * @since 2.8.0
+ * @uses $wpdb
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-wp_notify_moderator" filter.
+ * @param int $comment_id Comment ID
+ * @return bool Always returns true
+ */
+function _wp_notify_moderator( $existing = null, $comment_id ) {
+        if ( null !== $existing )
+                return $existing;
+
+        global $wpdb;
+
+        if ( get_option( 'moderation_notify' ) == 0 )
+                return true;
+
+        $comment = $wpdb->get_row($wpdb->prepare("SELECT * FROM $wpdb->comments WHERE comment_ID=%d LIMIT 1", $comment_id));
+        $post = $wpdb->get_row($wpdb->prepare("SELECT * FROM $wpdb->posts WHERE ID=%d LIMIT 1", $comment->comment_post_ID));
+
+        $comment_author_domain = @gethostbyaddr($comment->comment_author_IP);
+        $comments_waiting = $wpdb->get_var("SELECT count(comment_ID) FROM $wpdb->comments WHERE comment_approved = '0'");
+
+        switch ($comment->comment_type) {
+                case 'trackback':
+                        $notify_message  = sprintf( __('A new trackback on the post #%1$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";
+                        $notify_message .= sprintf( __('Website : %1$s (IP: %2$s , %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";
+                        $notify_message .= sprintf( __('URL     : %s'), $comment->comment_author_url ) . "\r\n";
+                        $notify_message .= __('Trackback excerpt: ') . "\r\n" . $comment->comment_content . "\r\n\r\n";
+                        break;
+                case 'pingback':
+                        $notify_message  = sprintf( __('A new pingback on the post #%1$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";
+                        $notify_message .= sprintf( __('Website : %1$s (IP: %2$s , %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";
+                        $notify_message .= sprintf( __('URL     : %s'), $comment->comment_author_url ) . "\r\n";
+                        $notify_message .= __('Pingback excerpt: ') . "\r\n" . $comment->comment_content . "\r\n\r\n";
+                        break;
+                default: //Comments
+                        $notify_message  = sprintf( __('A new comment on the post #%1$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( __('URL     : %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";
+                        break;
+        }
+
+        $notify_message .= sprintf( __('Approve it: %s'),  admin_url("comment.php?action=mac&c=$comment_id") ) . "\r\n";
+        $notify_message .= sprintf( __('Delete it: %s'), admin_url("comment.php?action=cdc&c=$comment_id") ) . "\r\n";
+        $notify_message .= sprintf( __('Spam it: %s'), admin_url("comment.php?action=cdc&dt=spam&c=$comment_id") ) . "\r\n";
+
+        $notify_message .= sprintf( _n('Currently %s comment is waiting for approval. Please visit the moderation panel:',
+                'Currently %s comments are waiting for approval. Please visit the moderation panel:', $comments_waiting), number_format_i18n($comments_waiting) ) . "\r\n";
+        $notify_message .= admin_url("edit-comments.php?comment_status=moderated") . "\r\n";
+
+        $subject = sprintf( __('[%1$s] Please moderate: "%2$s"'), get_option('blogname'), $post->post_title );
+        $admin_email = get_option('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;
+}
+
+/**
+ * Notify the blog admin of a user changing password, normally via email.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_password_change_notification()
+ *
+ * @since 2.8.0
+ *
+ * @param object $user User Object
+ */
+function _wp_password_change_notification( &$user ) {
+        // send a copy of password change notification to the admin
+        // but check to see if it's the admin whose password we're changing, and skip this
+        if ( $user->user_email != get_option('admin_email') ) {
+                $message = sprintf(__('Password Lost and Changed for user: %s'), $user->user_login) . "\r\n";
+                wp_mail(get_option('admin_email'), sprintf(__('[%s] Password Lost/Changed'), get_option('blogname')), $message);
+        }
+}
+
+/**
+ * Notify the blog admin of a new user, normally via email.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_new_user_notification()
+ *
+ * @since 2.8.0
+ *
+ * @param int $user_id User ID
+ * @param string $plaintext_pass Optional. The user's plaintext password
+ */
+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_option('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_option('admin_email'), sprintf(__('[%s] New User Registration'), get_option('blogname') ), $message);
+
+        if ( empty($plaintext_pass) )
+                return;
+
+        $message  = sprintf(__('Username: %s'), $user_login) . "\r\n";
+        $message .= sprintf(__('Password: %s'), $plaintext_pass) . "\r\n";
+        $message .= wp_login_url() . "\r\n";
+
+        wp_mail( $user_email, sprintf( __('[%s] Your username and password'), get_option('blogname') ), $message );
+}
+
+/**
+ * Displays a human readable HTML representation of the difference between two strings.
+ *
+ * The Diff is available for getting the changes between versions. The output is
+ * HTML, so the primary use is for displaying the changes. If the two strings
+ * are equivalent, then an empty string will be returned.
+ *
+ * The arguments supported and can be changed are listed below.
+ *
+ * 'title' : Default is an empty string. Titles the diff in a manner compatible
+ *       with the output.
+ * 'title_left' : Default is an empty string. Change the HTML to the left of the
+ *       title.
+ * 'title_right' : Default is an empty string. Change the HTML to the right of
+ *       the title.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_text_diff()
+ *
+ * @since 2.8.0
+ * @see wp_parse_args() Used to change defaults to user defined settings.
+ * @uses Text_Diff
+ * @uses WP_Text_Diff_Renderer_Table
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-wp_text_diff" filter.
+ * @param string $left_string "old" (left) version of string
+ * @param string $right_string "new" (right) version of string
+ * @param string|array $args Optional. Change 'title', 'title_left', and 'title_right' defaults.
+ * @return string Empty string if strings are equivalent or HTML with differences.
+ */
+function _wp_text_diff( $existing = null, $left_string, $right_string, $args = null ) {
+        if ( null !== $existing )
+                return $existing;
+
+        $defaults = array( 'title' => '', 'title_left' => '', 'title_right' => '' );
+        $args = wp_parse_args( $args, $defaults );
+
+        if ( !class_exists( 'WP_Text_Diff_Renderer_Table' ) )
+                require( ABSPATH . WPINC . '/wp-diff.php' );
+
+        $left_string  = normalize_whitespace($left_string);
+        $right_string = normalize_whitespace($right_string);
+
+        $left_lines  = split("\n", $left_string);
+        $right_lines = split("\n", $right_string);
+
+        $text_diff = new Text_Diff($left_lines, $right_lines);
+        $renderer  = new WP_Text_Diff_Renderer_Table();
+        $diff = $renderer->render($text_diff);
+
+        if ( !$diff )
+                return '';
+
+        $r  = "<table class='diff'>\n";
+        $r .= "<col class='ltype' /><col class='content' /><col class='ltype' /><col class='content' />";
+
+        if ( $args['title'] || $args['title_left'] || $args['title_right'] )
+                $r .= "<thead>";
+        if ( $args['title'] )
+                $r .= "<tr class='diff-title'><th colspan='4'>$args[title]</th></tr>\n";
+        if ( $args['title_left'] || $args['title_right'] ) {
+                $r .= "<tr class='diff-sub-title'>\n";
+                $r .= "\t<td></td><th>$args[title_left]</th>\n";
+                $r .= "\t<td></td><th>$args[title_right]</th>\n";
+                $r .= "</tr>\n";
+        }
+        if ( $args['title'] || $args['title_left'] || $args['title_right'] )
+                $r .= "</thead>\n";
+
+        $r .= "<tbody>\n$diff\n</tbody>\n";
+        $r .= "</table>";
+
+        return $r;
+}
+
 ?>

wp-includes/general-template.php

@@ -2013 +2013 @@
         return apply_filters( "get_the_generator_{$type}", $gen, $type );
 }
 
+/**
+ * Retrieve the avatar for a user who provided a user ID or email address.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see get_avatar()
+ *
+ * @since 2.8.0
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-get_avatar" filter.
+ * @param int|string|object $id_or_email A user ID,  email address, or comment object
+ * @param int $size Size of the avatar image
+ * @param string $default URL to a default image to use if no avatar is available
+ * @param string $alt Alternate text to use in image tag. Defaults to blank
+ * @return string <img> tag for the user's avatar
+*/
+function _get_avatar( $existing = null, $id_or_email, $size = '96', $default = '', $alt = false ) {
+        if ( null !== $existing )
+                return $existing;
+
+        if ( ! get_option('show_avatars') )
+                return false;
+
+        if ( false === $alt)
+                $safe_alt = '';
+        else
+                $safe_alt = attr( $alt );
+
+        if ( !is_numeric($size) )
+                $size = '96';
+
+        $email = '';
+        if ( is_numeric($id_or_email) ) {
+                $id = (int) $id_or_email;
+                $user = get_userdata($id);
+                if ( $user )
+                        $email = $user->user_email;
+        } elseif ( is_object($id_or_email) ) {
+                if ( isset($id_or_email->comment_type) && '' != $id_or_email->comment_type && 'comment' != $id_or_email->comment_type )
+                        return false; // No avatar for pingbacks or trackbacks
+
+                if ( !empty($id_or_email->user_id) ) {
+                        $id = (int) $id_or_email->user_id;
+                        $user = get_userdata($id);
+                        if ( $user)
+                                $email = $user->user_email;
+                } elseif ( !empty($id_or_email->comment_author_email) ) {
+                        $email = $id_or_email->comment_author_email;
+                }
+        } else {
+                $email = $id_or_email;
+        }
+
+        if ( empty($default) ) {
+                $avatar_default = get_option('avatar_default');
+                if ( empty($avatar_default) )
+                        $default = 'mystery';
+                else
+                        $default = $avatar_default;
+        }
+
+        if ( is_ssl() )
+                $host = 'https://secure.gravatar.com';
+        else
+                $host = 'http://www.gravatar.com';
+
+        if ( 'mystery' == $default )
+                $default = "$host/avatar/ad516503a11cd5ca435acc9bb6523536?s={$size}"; // ad516503a11cd5ca435acc9bb6523536 == md5('unknown@gravatar.com')
+        elseif ( 'blank' == $default )
+                $default = includes_url('images/blank.gif');
+        elseif ( !empty($email) && 'gravatar_default' == $default )
+                $default = '';
+        elseif ( 'gravatar_default' == $default )
+                $default = "$host/avatar/s={$size}";
+        elseif ( empty($email) )
+                $default = "$host/avatar/?d=$default&amp;s={$size}";
+        elseif ( strpos($default, 'http://') === 0 )
+                $default = add_query_arg( 's', $size, $default );
+
+        if ( !empty($email) ) {
+                $out = "$host/avatar/";
+                $out .= md5( strtolower( $email ) );
+                $out .= '?s='.$size;
+                $out .= '&amp;d=' . urlencode( $default );
+
+                $rating = get_option('avatar_rating');
+                if ( !empty( $rating ) )
+                        $out .= "&amp;r={$rating}";
+
+                $avatar = "<img alt='{$safe_alt}' src='{$out}' class='avatar avatar-{$size} photo' height='{$size}' width='{$size}' />";
+        } else {
+                $avatar = "<img alt='{$safe_alt}' src='{$default}' class='avatar avatar-{$size} photo avatar-default' height='{$size}' width='{$size}' />";
+        }
+
+        return apply_filters('get_avatar', $avatar, $id_or_email, $size, $default, $alt);
+}
+
 ?>

wp-includes/pluggable.php

@@ -19 +19 @@
  * @param string $name Optional. The user's username
  * @return object returns wp_set_current_user()
  */
-function set_current_user($id, $name = '') {
-        return wp_set_current_user($id, $name);
+function set_current_user( $id, $name = '' ) {
+        return wp_set_current_user( $id, $name );
 }
 endif;
 
@@ -30 +30 @@
  *
  * Set $id to null and specify a name if you do not know a user's ID.
  *
- * Some WordPress functionality is based on the current user and not based on
- * the signed in user. Therefore, it opens the ability to edit and perform
- * actions on users who aren't signed in.
+ * @see _wp_set_current_user()
  *
  * @since 2.0.3
- * @global object $current_user The current user object which holds the user data.
- * @uses do_action() Calls 'set_current_user' hook after setting the current user.
  *
  * @param int $id User ID
  * @param string $name User's username
  * @return WP_User Current user User object
  */
-function wp_set_current_user($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;
+function wp_set_current_user( $id, $name = '' ) {
+        return apply_filters( 'pluggable-wp_set_current_user', null, $id, $name );
 }
+add_filter( 'pluggable-wp_set_current_user', '_wp_set_current_user', 10, 3 );
 endif;
 
 if ( !function_exists('wp_get_current_user') ) :
 /**
  * Retrieve the current user object.
  *
+ * @see _wp_get_current_user()
+ *
  * @since 2.0.3
  *
  * @return WP_User Current user WP_User object
  */
 function wp_get_current_user() {
-        global $current_user;
-
-        get_currentuserinfo();
-
-        return $current_user;
+        return apply_filters( 'pluggable-wp_get_current_user', null );
 }
+add_filter( 'pluggable-wp_get_current_user', '_wp_get_current_user' );
 endif;
 
 if ( !function_exists('get_currentuserinfo') ) :
 /**
  * Populate global variables with information about the currently logged in user.
  *
- * Will set the current user, if the current user is not set. The current user
- * will be set to the logged in person. If no user is logged in, then it will
- * set the current user to 0, which is invalid and won't have any permissions.
+ * @see _get_currentuserinfo()
  *
  * @since 0.71
- * @uses $current_user Checks if the current user is set
- * @uses wp_validate_auth_cookie() Retrieves current logged in user.
  *
- * @return bool|null False on XMLRPC Request and invalid auth cookie. Null when current user set
+ * @return bool|null False on XMLRPC Request and invalid auth cookie. Null when current user set.
  */
 function get_currentuserinfo() {
-        global $current_user;
-
-        if ( defined('XMLRPC_REQUEST') && XMLRPC_REQUEST )
-                return false;
-
-        if ( ! empty($current_user) )
-                return;
-
-        if ( ! $user = wp_validate_auth_cookie() ) {
-                 if ( empty($_COOKIE[LOGGED_IN_COOKIE]) || !$user = wp_validate_auth_cookie($_COOKIE[LOGGED_IN_COOKIE], 'logged_in') ) {
-                        wp_set_current_user(0);
-                        return false;
-                 }
-        }
-
-        wp_set_current_user($user);
+        return apply_filters( 'pluggable-get_currentuserinfo', null );
 }
+add_filter( 'pluggable-get_currentuserinfo', '_get_currentuserinfo' );
 endif;
 
 if ( !function_exists('get_userdata') ) :
 /**
  * Retrieve user info by user ID.
  *
+ * @see _get_userdata()
+ *
  * @since 0.71
  *
  * @param int $user_id User ID
  * @return bool|object False on failure, User DB row object
  */
 function get_userdata( $user_id ) {
-        global $wpdb;
-
-        $user_id = absint($user_id);
-        if ( $user_id == 0 )
-                return false;
-
-        $user = wp_cache_get($user_id, 'users');
-
-        if ( $user )
-                return $user;
-
-        if ( !$user = $wpdb->get_row($wpdb->prepare("SELECT * FROM $wpdb->users WHERE ID = %d LIMIT 1", $user_id)) )
-                return false;
-
-        _fill_user($user);
-
-        return $user;
+        return apply_filters( 'pluggable-get_userdata', null, $user_id );
 }
+add_filter( 'pluggable-get_userdata', '_get_userdata', 10, 2 );
 endif;
 
 if ( !function_exists('get_user_by') ) :
 /**
  * Retrieve user info by a given field
  *
+ * @see _get_user_by()
+ *
  * @since 2.8.0
  *
  * @param string $field The field to retrieve the user with.  id | slug | email | login
  * @param int|string $value A value for $field.  A user ID, slug, email address, or login name.
  * @return bool|object False on failure, User DB row object
  */
-function get_user_by($field, $value) {
-        global $wpdb;
-
-        switch ($field) {
-                case 'id':
-                        return get_userdata($value);
-                        break;
-                case 'slug':
-                        $user_id = wp_cache_get($value, 'userslugs');
-                        $field = 'user_nicename';
-                        break;
-                case 'email':
-                        $user_id = wp_cache_get($value, 'useremail');
-                        $field = 'user_email';
-                        break;
-                case 'login':
-                        $value = sanitize_user( $value );
-                        $user_id = wp_cache_get($value, 'userlogins');
-                        $field = 'user_login';
-                        break;
-                default:
-                        return false;
-        }
-
-         if ( false !== $user_id )
-                return get_userdata($user_id);
-
-        if ( !$user = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->users WHERE $field = %s", $value) ) )
-                return false;
-
-        _fill_user($user);
-
-        return $user;
+function get_user_by( $field, $value ) {
+        return apply_filters( 'pluggable-get_user_by', null, $field, $value );
 }
+add_filter( 'pluggable-get_user_by', '_get_user_by', 10, 3 );
 endif;
 
 if ( !function_exists('get_userdatabylogin') ) :
@@ -194 +120 @@
  * @param string $user_login User's username
  * @return bool|object False on failure, User DB row object
  */
-function get_userdatabylogin($user_login) {
-        return get_user_by('login', $user_login);
+function get_userdatabylogin( $user_login ) {
+        return get_user_by( 'login', $user_login );
 }
 endif;
 
@@ -208 +134 @@
  * @param string $email User's email address
  * @return bool|object False on failure, User DB row object
  */
-function get_user_by_email($email) {
-        return get_user_by('email', $email);
+function get_user_by_email( $email ) {
+        return get_user_by( 'email', $email );
 }
 endif;
 
@@ -217 +143 @@
 /**
  * Send mail, similar to PHP's mail
  *
- * A true return value does not automatically mean that the user received the
- * email successfully. It just only means that the method used was able to
- * process the request without any errors.
+ * @see _wp_mail()
  *
- * Using the two 'wp_mail_from' and 'wp_mail_from_name' hooks allow from
- * creating a from address like 'Name <email@address.com>' when both are set. If
- * just 'wp_mail_from' is set, then just the email address will be used with no
- * name.
- *
- * The default content type is 'text/plain' which does not allow using HTML.
- * However, you can set the content type of the email by using the
- * 'wp_mail_content_type' filter.
- *
- * The default charset is based on the charset used on the blog. The charset can
- * be set using the 'wp_mail_charset' filter.
- *
  * @since 1.2.1
- * @uses apply_filters() Calls 'wp_mail' hook on an array of all of the parameters.
- * @uses apply_filters() Calls 'wp_mail_from' hook to get the from email address.
- * @uses apply_filters() Calls 'wp_mail_from_name' hook to get the from address name.
- * @uses apply_filters() Calls 'wp_mail_content_type' hook to get the email content type.
- * @uses apply_filters() Calls 'wp_mail_charset' hook to get the email charset
- * @uses do_action_ref_array() Calls 'phpmailer_init' hook on the reference to
- *              phpmailer object.
- * @uses PHPMailer
- * @
  *
  * @param string $to Email address to send message
  * @param string $subject Email subject
@@ -252 +155 @@
  * @return bool Whether the email contents were sent successfully.
  */
 function wp_mail( $to, $subject, $message, $headers = '', $attachments = array() ) {
-        // Compact the input, apply the filters, and extract them back out
-        extract( apply_filters( 'wp_mail', compact( 'to', 'subject', 'message', 'headers', 'attachments' ) ) );
-
-        if ( !is_array($attachments) )
-                $attachments = explode( "\n", $attachments );
-
-        global $phpmailer;
-
-        // (Re)create it, if it's gone missing
-        if ( !is_object( $phpmailer ) || !is_a( $phpmailer, 'PHPMailer' ) ) {
-                require_once ABSPATH . WPINC . '/class-phpmailer.php';
-                require_once ABSPATH . WPINC . '/class-smtp.php';
-                $phpmailer = new PHPMailer();
-        }
-
-        // Headers
-        if ( empty( $headers ) ) {
-                $headers = array();
-        } else {
-                if ( !is_array( $headers ) ) {
-                        // Explode the headers out, so this function can take both
-                        // string headers and an array of headers.
-                        $tempheaders = (array) explode( "\n", $headers );
-                } else {
-                        $tempheaders = $headers;
-                }
-                $headers = array();
-
-                // If it's actually got contents
-                if ( !empty( $tempheaders ) ) {
-                        // Iterate through the raw headers
-                        foreach ( (array) $tempheaders as $header ) {
-                                if ( strpos($header, ':') === false ) {
-                                        if ( false !== stripos( $header, 'boundary=' ) ) {
-                                                $parts = preg_split('/boundary=/i', trim( $header ) );
-                                                $boundary = trim( str_replace( array( "'", '"' ), '', $parts[1] ) );
-                                        }
-                                        continue;
-                                }
-                                // Explode them out
-                                list( $name, $content ) = explode( ':', trim( $header ), 2 );
-
-                                // Cleanup crew
-                                $name = trim( $name );
-                                $content = trim( $content );
-
-                                // Mainly for legacy -- process a From: header if it's there
-                                if ( 'from' == strtolower($name) ) {
-                                        if ( strpos($content, '<' ) !== false ) {
-                                                // So... making my life hard again?
-                                                $from_name = substr( $content, 0, strpos( $content, '<' ) - 1 );
-                                                $from_name = str_replace( '"', '', $from_name );
-                                                $from_name = trim( $from_name );
-
-                                                $from_email = substr( $content, strpos( $content, '<' ) + 1 );
-                                                $from_email = str_replace( '>', '', $from_email );
-                                                $from_email = trim( $from_email );
-                                        } else {
-                                                $from_email = trim( $content );
-                                        }
-                                } elseif ( 'content-type' == strtolower($name) ) {
-                                        if ( strpos( $content,';' ) !== false ) {
-                                                list( $type, $charset ) = explode( ';', $content );
-                                                $content_type = trim( $type );
-                                                if ( false !== stripos( $charset, 'charset=' ) ) {
-                                                        $charset = trim( str_replace( array( 'charset=', '"' ), '', $charset ) );
-                                                } elseif ( false !== stripos( $charset, 'boundary=' ) ) {
-                                                        $boundary = trim( str_replace( array( 'BOUNDARY=', 'boundary=', '"' ), '', $charset ) );
-                                                        $charset = '';
-                                                }
-                                        } else {
-                                                $content_type = trim( $content );
-                                        }
-                                } elseif ( 'cc' == strtolower($name) ) {
-                                        $cc = explode(",", $content);
-                                } elseif ( 'bcc' == strtolower($name) ) {
-                                        $bcc = explode(",", $content);
-                                } else {
-                                        // Add it to our grand headers array
-                                        $headers[trim( $name )] = trim( $content );
-                                }
-                        }
-                }
-        }
-
-        // Empty out the values that may be set
-        $phpmailer->ClearAddresses();
-        $phpmailer->ClearAllRecipients();
-        $phpmailer->ClearAttachments();
-        $phpmailer->ClearBCCs();
-        $phpmailer->ClearCCs();
-        $phpmailer->ClearCustomHeaders();
-        $phpmailer->ClearReplyTos();
-
-        // From email and name
-        // If we don't have a name from the input headers
-        if ( !isset( $from_name ) ) {
-                $from_name = 'WordPress';
-        }
-
-        /* If we don't have an email from the input headers default to wordpress@$sitename
-         * Some hosts will block outgoing mail from this address if it doesn't exist but
-         * there's no easy alternative. Defaulting to admin_email might appear to be another
-         * option but some hosts may refuse to relay mail from an unknown domain. See
-         * http://trac.wordpress.org/ticket/5007.
-         */
-
-        if ( !isset( $from_email ) ) {
-                // Get the site domain and get rid of www.
-                $sitename = strtolower( $_SERVER['SERVER_NAME'] );
-                if ( substr( $sitename, 0, 4 ) == 'www.' ) {
-                        $sitename = substr( $sitename, 4 );
-                }
-
-                $from_email = 'wordpress@' . $sitename;
-        }
-
-        // Plugin authors can override the potentially troublesome default
-        $phpmailer->From = apply_filters( 'wp_mail_from', $from_email );
-        $phpmailer->FromName = apply_filters( 'wp_mail_from_name', $from_name );
-
-        // Set destination address
-        $phpmailer->AddAddress( $to );
-
-        // Set mail's subject and body
-        $phpmailer->Subject = $subject;
-        $phpmailer->Body = $message;
-
-        // Add any CC and BCC recipients
-        if ( !empty($cc) ) {
-                foreach ( (array) $cc as $recipient ) {
-                        $phpmailer->AddCc( trim($recipient) );
-                }
-        }
-        if ( !empty($bcc) ) {
-                foreach ( (array) $bcc as $recipient) {
-                        $phpmailer->AddBcc( trim($recipient) );
-                }
-        }
-
-        // Set to use PHP's mail()
-        $phpmailer->IsMail();
-
-        // Set Content-Type and charset
-        // If we don't have a content-type from the input headers
-        if ( !isset( $content_type ) ) {
-                $content_type = 'text/plain';
-        }
-
-        $content_type = apply_filters( 'wp_mail_content_type', $content_type );
-
-        $phpmailer->ContentType = $content_type;
-
-        // Set whether it's plaintext or not, depending on $content_type
-        if ( $content_type == 'text/html' ) {
-                $phpmailer->IsHTML( true );
-        }
-
-        // If we don't have a charset from the input headers
-        if ( !isset( $charset ) ) {
-                $charset = get_bloginfo( 'charset' );
-        }
-
-        // Set the content-type and charset
-        $phpmailer->CharSet = apply_filters( 'wp_mail_charset', $charset );
-
-        // Set custom headers
-        if ( !empty( $headers ) ) {
-                foreach( (array) $headers as $name => $content ) {
-                        $phpmailer->AddCustomHeader( sprintf( '%1$s: %2$s', $name, $content ) );
-                }
-                if ( false !== stripos( $content_type, 'multipart' ) && ! empty($boundary) ) {
-                        $phpmailer->AddCustomHeader( sprintf( "Content-Type: %s;\n\t boundary=\"%s\"", $content_type, $boundary ) );
-                }
-        }
-
-        if ( !empty( $attachments ) ) {
-                foreach ( $attachments as $attachment ) {
-                        $phpmailer->AddAttachment($attachment);
-                }
-        }
-
-        do_action_ref_array( 'phpmailer_init', array( &$phpmailer ) );
-
-        // Send!
-        $result = @$phpmailer->Send();
-
-        return $result;
+        return apply_filters( 'pluggable-wp_mail', null, $to, $subject, $message, $headers, $attachments );
 }
+add_filter( 'pluggable-wp_mail', '_wp_mail', 10, 6 );
 endif;
 
 if ( !function_exists('wp_authenticate') ) :
 /**
  * Checks a user's login information and logs them in if it checks out.
  *
+ * @see _wp_authenticate()
+ *
  * @since 2.5.0
  *
  * @param string $username User's username
  * @param string $password User's password
  * @return WP_Error|WP_User WP_User object if login successful, otherwise WP_Error object.
  */
-function wp_authenticate($username, $password) {
-        $username = sanitize_user($username);
-        $password = trim($password);
-
-        $user = apply_filters('authenticate', null, $username, $password);
-
-        if ( $user == null ) {
-                // TODO what should the error message be? (Or would these even happen?)
-                // Only needed if all authentication handlers fail to return anything.
-                $user = new WP_Error('authentication_failed', __('<strong>ERROR</strong>: Invalid username or incorrect password.'));
-        }
-
-        $ignore_codes = array('empty_username', 'empty_password');
-
-        if (is_wp_error($user) && !in_array($user->get_error_code(), $ignore_codes) ) {
-                do_action('wp_login_failed', $username);
-        }
-
-        return $user;
+function wp_authenticate( $username, $password ) {
+        return apply_filters( 'pluggable-wp_authenticate', null, $username, $password );
 }
+add_filter( 'pluggable-wp_authenticate', '_wp_authenticate', 10, 3 );
 endif;
 
 if ( !function_exists('wp_logout') ) :
 /**
  * Log the current user out.
  *
+ * @see _wp_logout()
+ *
  * @since 2.5.0
  */
 function wp_logout() {
-        wp_clear_auth_cookie();
-        do_action('wp_logout');
+        do_action( 'pluggable-wp_logout' );
 }
+add_action( 'pluggable-wp_logout', '_wp_logout' );
 endif;
 
 if ( !function_exists('wp_validate_auth_cookie') ) :
 /**
  * Validates authentication cookie.
  *
- * The checks include making sure that the authentication cookie is set and
- * pulling in the contents (if $cookie is not used).
+ * @see _wp_authenticate()
  *
- * Makes sure the cookie is not expired. Verifies the hash in cookie is what is
- * should be and compares the two.
- *
  * @since 2.5
  *
  * @param string $cookie Optional. If used, will validate contents instead of cookie's
  * @param string $scheme Optional. The cookie scheme to use: auth, secure_auth, or logged_in
  * @return bool|int False if invalid cookie, User ID if valid.
  */
-function wp_validate_auth_cookie($cookie = '', $scheme = '') {
-        if ( ! $cookie_elements = wp_parse_auth_cookie($cookie, $scheme) ) {
-                do_action('auth_cookie_malformed', $cookie, $scheme);
-                return false;
-        }
-
-        extract($cookie_elements, EXTR_OVERWRITE);
-
-        $expired = $expiration;
-
-        // Allow a grace period for POST and AJAX requests
-        if ( defined('DOING_AJAX') || 'POST' == $_SERVER['REQUEST_METHOD'] )
-                $expired += 3600;
-
-        // Quick check to see if an honest cookie has expired
-        if ( $expired < time() ) {
-                do_action('auth_cookie_expired', $cookie_elements);
-                return false;
-        }
-
-        $user = get_userdatabylogin($username);
-        if ( ! $user ) {
-                do_action('auth_cookie_bad_username', $cookie_elements);
-                return false;
-        }
-
-        $pass_frag = substr($user->user_pass, 8, 4);
-
-        $key = wp_hash($username . $pass_frag . '|' . $expiration, $scheme);
-        $hash = hash_hmac('md5', $username . '|' . $expiration, $key);
-
-        if ( $hmac != $hash ) {
-                do_action('auth_cookie_bad_hash', $cookie_elements);
-                return false;
-        }
-
-        do_action('auth_cookie_valid', $cookie_elements, $user);
-
-        return $user->ID;
+function wp_validate_auth_cookie( $cookie = '', $scheme = '' ) {
+        return apply_filters( 'pluggable-wp_validate_auth_cookie', null, $cookie, $scheme );
 }
+add_filter( 'pluggable-wp_validate_auth_cookie', '_wp_validate_auth_cookie', 10, 3 );
 endif;
 
 if ( !function_exists('wp_generate_auth_cookie') ) :
 /**
  * Generate authentication cookie contents.
  *
+ * @see _wp_generate_auth_cookie()
+ *
  * @since 2.5
- * @uses apply_filters() Calls 'auth_cookie' hook on $cookie contents, User ID
- *              and expiration of cookie.
  *
  * @param int $user_id User ID
  * @param int $expiration Cookie expiration in seconds
  * @param string $scheme Optional. The cookie scheme to use: auth, secure_auth, or logged_in
  * @return string Authentication cookie contents
  */
-function wp_generate_auth_cookie($user_id, $expiration, $scheme = 'auth') {
-        $user = get_userdata($user_id);
-
-        $pass_frag = substr($user->user_pass, 8, 4);
-
-        $key = wp_hash($user->user_login . $pass_frag . '|' . $expiration, $scheme);
-        $hash = hash_hmac('md5', $user->user_login . '|' . $expiration, $key);
-
-        $cookie = $user->user_login . '|' . $expiration . '|' . $hash;
-
-        return apply_filters('auth_cookie', $cookie, $user_id, $expiration, $scheme);
+function wp_generate_auth_cookie( $user_id, $expiration, $scheme = 'auth' ) {
+        return apply_filters( 'pluggable-wp_generate_auth_cookie', null, $user_id, $expiration, $scheme );
 }
+add_filter( 'pluggable-wp_generate_auth_cookie', '_wp_generate_auth_cookie', 10, 4 );
 endif;
 
 if ( !function_exists('wp_parse_auth_cookie') ) :
 /**
  * Parse a cookie into its components
  *
+ * @see _wp_parse_auth_cookie()
+ *
  * @since 2.7
  *
  * @param string $cookie
  * @param string $scheme Optional. The cookie scheme to use: auth, secure_auth, or logged_in
  * @return array Authentication cookie components
  */
-function wp_parse_auth_cookie($cookie = '', $scheme = '') {
-        if ( empty($cookie) ) {
-                switch ($scheme){
-                        case 'auth':
-                                $cookie_name = AUTH_COOKIE;
-                                break;
-                        case 'secure_auth':
-                                $cookie_name = SECURE_AUTH_COOKIE;
-                                break;
-                        case "logged_in":
-                                $cookie_name = LOGGED_IN_COOKIE;
-                                break;
-                        default:
-                                if ( is_ssl() ) {
-                                        $cookie_name = SECURE_AUTH_COOKIE;
-                                        $scheme = 'secure_auth';
-                                } else {
-                                        $cookie_name = AUTH_COOKIE;
-                                        $scheme = 'auth';
-                                }
-            }
-
-                if ( empty($_COOKIE[$cookie_name]) )
-                        return false;
-                $cookie = $_COOKIE[$cookie_name];
-        }
-
-        $cookie_elements = explode('|', $cookie);
-        if ( count($cookie_elements) != 3 )
-                return false;
-
-        list($username, $expiration, $hmac) = $cookie_elements;
-
-        return compact('username', 'expiration', 'hmac', 'scheme');
+function wp_parse_auth_cookie( $cookie = '', $scheme = '' ) {
+        return apply_filters( 'pluggable-wp_parse_auth_cookie', null, $cookie, $scheme );
 }
+add_filter( 'pluggable-wp_parse_auth_cookie', '_wp_parse_auth_cookie', 10, 3 );
 endif;
 
 if ( !function_exists('wp_set_auth_cookie') ) :
@@ -627 +255 @@
  * default the cookie is kept without remembering is two days. When $remember is
  * set, the cookies will be kept for 14 days or two weeks.
  *
+ * @see _wp_set_auth_cookie()
+ *
  * @since 2.5
  *
  * @param int $user_id User ID
  * @param bool $remember Whether to remember the user or not
  */
-function wp_set_auth_cookie($user_id, $remember = false, $secure = '') {
-        if ( $remember ) {
-                $expiration = $expire = time() + apply_filters('auth_cookie_expiration', 1209600, $user_id, $remember);
-        } else {
-                $expiration = time() + apply_filters('auth_cookie_expiration', 172800, $user_id, $remember);
-                $expire = 0;
-        }
-
-        if ( '' === $secure )
-                $secure = is_ssl() ? true : false;
-
-        if ( $secure ) {
-                $auth_cookie_name = SECURE_AUTH_COOKIE;
-                $scheme = 'secure_auth';
-        } else {
-                $auth_cookie_name = AUTH_COOKIE;
-                $scheme = 'auth';
-        }
-
-        $auth_cookie = wp_generate_auth_cookie($user_id, $expiration, $scheme);
-        $logged_in_cookie = wp_generate_auth_cookie($user_id, $expiration, 'logged_in');
-
-        do_action('set_auth_cookie', $auth_cookie, $expire, $expiration, $user_id, $scheme);
-        do_action('set_logged_in_cookie', $logged_in_cookie, $expire, $expiration, $user_id, 'logged_in');
-
-        // Set httponly if the php version is >= 5.2.0
-        if ( version_compare(phpversion(), '5.2.0', 'ge') ) {
-                setcookie($auth_cookie_name, $auth_cookie, $expire, PLUGINS_COOKIE_PATH, COOKIE_DOMAIN, $secure, true);
-                setcookie($auth_cookie_name, $auth_cookie, $expire, ADMIN_COOKIE_PATH, COOKIE_DOMAIN, $secure, true);
-                setcookie(LOGGED_IN_COOKIE, $logged_in_cookie, $expire, COOKIEPATH, COOKIE_DOMAIN, false, true);
-                if ( COOKIEPATH != SITECOOKIEPATH )
-                        setcookie(LOGGED_IN_COOKIE, $logged_in_cookie, $expire, SITECOOKIEPATH, COOKIE_DOMAIN, false, true);
-        } else {
-                $cookie_domain = COOKIE_DOMAIN;
-                if ( !empty($cookie_domain) )
-                        $cookie_domain .= '; HttpOnly';
-                setcookie($auth_cookie_name, $auth_cookie, $expire, PLUGINS_COOKIE_PATH, $cookie_domain, $secure);
-                setcookie($auth_cookie_name, $auth_cookie, $expire, ADMIN_COOKIE_PATH, $cookie_domain, $secure);
-                setcookie(LOGGED_IN_COOKIE, $logged_in_cookie, $expire, COOKIEPATH, $cookie_domain);
-                if ( COOKIEPATH != SITECOOKIEPATH )
-                        setcookie(LOGGED_IN_COOKIE, $logged_in_cookie, $expire, SITECOOKIEPATH, $cookie_domain);
-        }
+function wp_set_auth_cookie( $user_id, $remember = false, $secure = '' ) {
+        do_action( 'pluggable-wp_set_auth_cookie', $user_id, $remember, $secure );
 }
+add_action( 'pluggable-wp_set_auth_cookie', '_wp_set_auth_cookie', 10, 3 );
 endif;
 
 if ( !function_exists('wp_clear_auth_cookie') ) :
 /**
  * Removes all of the cookies associated with authentication.
  *
+ * @see _wp_clear_auth_cookie()
+ *
  * @since 2.5
  */
 function wp_clear_auth_cookie() {
-        do_action('clear_auth_cookie');
-
-        setcookie(AUTH_COOKIE, ' ', time() - 31536000, ADMIN_COOKIE_PATH, COOKIE_DOMAIN);
-        setcookie(SECURE_AUTH_COOKIE, ' ', time() - 31536000, ADMIN_COOKIE_PATH, COOKIE_DOMAIN);
-        setcookie(AUTH_COOKIE, ' ', time() - 31536000, PLUGINS_COOKIE_PATH, COOKIE_DOMAIN);
-        setcookie(SECURE_AUTH_COOKIE, ' ', time() - 31536000, PLUGINS_COOKIE_PATH, COOKIE_DOMAIN);
-        setcookie(LOGGED_IN_COOKIE, ' ', time() - 31536000, COOKIEPATH, COOKIE_DOMAIN);
-        setcookie(LOGGED_IN_COOKIE, ' ', time() - 31536000, SITECOOKIEPATH, COOKIE_DOMAIN);
-
-        // Old cookies
-        setcookie(AUTH_COOKIE, ' ', time() - 31536000, COOKIEPATH, COOKIE_DOMAIN);
-        setcookie(AUTH_COOKIE, ' ', time() - 31536000, SITECOOKIEPATH, COOKIE_DOMAIN);
-        setcookie(SECURE_AUTH_COOKIE, ' ', time() - 31536000, COOKIEPATH, COOKIE_DOMAIN);
-        setcookie(SECURE_AUTH_COOKIE, ' ', time() - 31536000, SITECOOKIEPATH, COOKIE_DOMAIN);
-
-        // Even older cookies
-        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);
+        do_action( 'pluggable-wp_clear_auth_cookie' );
 }
+add_action( 'pluggable-wp_clear_auth_cookie', '_wp_clear_auth_cookie' );
 endif;
 
 if ( !function_exists('is_user_logged_in') ) :
 /**
  * Checks if the current visitor is a logged in user.
  *
+ * @see _is_user_logged_in()
+ *
  * @since 2.0.0
  *
  * @return bool True if user is logged in, false if not logged in.
  */
 function is_user_logged_in() {
-        $user = wp_get_current_user();
-
-        if ( $user->id == 0 )
-                return false;
-
-        return true;
+        return apply_filters( 'pluggable-is_user_logged_in', null );
 }
+add_filter( 'pluggable-is_user_logged_in', '_is_user_logged_in' );
 endif;
 
 if ( !function_exists('auth_redirect') ) :
 /**
  * Checks if a user is logged in, if not it redirects them to the login page.
  *
+ * @see _auth_redirect()
+ *
  * @since 1.5
  */
 function auth_redirect() {
-        // Checks if a user is logged in, if not redirects them to the login page
-
-        if ( is_ssl() || force_ssl_admin() )
-                $secure = true;
-        else
-                $secure = false;
-
-        // If https is required and request is http, redirect
-        if ( $secure && !is_ssl() && false !== strpos($_SERVER['REQUEST_URI'], 'wp-admin') ) {
-                if ( 0 === strpos($_SERVER['REQUEST_URI'], 'http') ) {
-                        wp_redirect(preg_replace('|^http://|', 'https://', $_SERVER['REQUEST_URI']));
-                        exit();
-                } else {
-                        wp_redirect('https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
-                        exit();
-                }
-        }
-
-        if ( $user_id = wp_validate_auth_cookie() ) {
-                do_action('auth_redirect', $user_id);
-
-                // If the user wants ssl but the session is not ssl, redirect.
-                if ( !$secure && get_user_option('use_ssl', $user_id) && false !== strpos($_SERVER['REQUEST_URI'], 'wp-admin') ) {
-                        if ( 0 === strpos($_SERVER['REQUEST_URI'], 'http') ) {
-                                wp_redirect(preg_replace('|^http://|', 'https://', $_SERVER['REQUEST_URI']));
-                                exit();
-                        } else {
-                                wp_redirect('https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
-                                exit();
-                        }
-                }
-
-                return;  // The cookie is good so we're done
-        }
-
-        // The cookie is no good so force login
-        nocache_headers();
-
-        if ( is_ssl() )
-                $proto = 'https://';
-        else
-                $proto = 'http://';
-
-        $redirect = ( strpos($_SERVER['REQUEST_URI'], '/options.php') && wp_get_referer() ) ? wp_get_referer() : $proto . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
-
-        $login_url = wp_login_url($redirect);
-
-        wp_redirect($login_url);
-        exit();
+        do_action( 'pluggable-auth_redirect' );
 }
+add_action( 'pluggable-auth_redirect', '_auth_redirect' );
 endif;
 
 if ( !function_exists('check_admin_referer') ) :
@@ -790 +318 @@
  *
  * To avoid security exploits.
  *
+ * @see _check_admin_referer()
+ *
  * @since 1.2.0
- * @uses do_action() Calls 'check_admin_referer' on $action.
  *
  * @param string $action Action nonce
  * @param string $query_arg where to look for nonce in $_REQUEST (since 2.5)
  */
-function check_admin_referer($action = -1, $query_arg = '_wpnonce') {
-        $adminurl = strtolower(admin_url());
-        $referer = strtolower(wp_get_referer());
-        $result = isset($_REQUEST[$query_arg]) ? wp_verify_nonce($_REQUEST[$query_arg], $action) : false;
-        if ( !$result && !(-1 == $action && strpos($referer, $adminurl) !== false) ) {
-                wp_nonce_ays($action);
-                die();
-        }
-        do_action('check_admin_referer', $action, $result);
-        return $result;
-}endif;
+function check_admin_referer( $action = -1, $query_arg = '_wpnonce' ) {
+        return apply_filters( 'pluggable-check_admin_referer', null, $action, $query_arg );
+}
+add_filter( 'pluggable-check_admin_referer', '_check_admin_referer', 10, 3 );
+endif;
 
 if ( !function_exists('check_ajax_referer') ) :
 /**
  * Verifies the AJAX request to prevent processing requests external of the blog.
  *
+ * @see _check_ajax_referer()
+ *
  * @since 2.0.3
  *
  * @param string $action Action nonce
  * @param string $query_arg where to look for nonce in $_REQUEST (since 2.5)
  */
 function check_ajax_referer( $action = -1, $query_arg = false, $die = true ) {
-        if ( $query_arg )
-                $nonce = $_REQUEST[$query_arg];
-        else
-                $nonce = $_REQUEST['_ajax_nonce'] ? $_REQUEST['_ajax_nonce'] : $_REQUEST['_wpnonce'];
-
-        $result = wp_verify_nonce( $nonce, $action );
-
-        if ( $die && false == $result )
-                die('-1');
-
-        do_action('check_ajax_referer', $action, $result);
-
-        return $result;
+        return apply_filters( 'pluggable-check_admin_referer', null, $action, $query_arg, $die );
 }
+add_filter( 'pluggable-check_admin_referer', '_check_ajax_referer', 10, 4 );
 endif;
 
 if ( !function_exists('wp_redirect') ) :
 /**
- * Redirects to another page, with a workaround for the IIS Set-Cookie bug.
+ * Redirects to another page.
  *
- * @link http://support.microsoft.com/kb/q176113/
+ * @see _wp_redirect()
+ *
  * @since 1.5.1
- * @uses apply_filters() Calls 'wp_redirect' hook on $location and $status.
  *
  * @param string $location The path to redirect to
  * @param int $status Status code to use
  * @return bool False if $location is not set
  */
-function wp_redirect($location, $status = 302) {
-        global $is_IIS;
-
-        $location = apply_filters('wp_redirect', $location, $status);
-        $status = apply_filters('wp_redirect_status', $status, $location);
-
-        if ( !$location ) // allows the wp_redirect filter to cancel a redirect
-                return false;
-
-        $location = wp_sanitize_redirect($location);
-
-        if ( $is_IIS ) {
-                header("Refresh: 0;url=$location");
-        } else {
-                if ( php_sapi_name() != 'cgi-fcgi' )
-                        status_header($status); // This causes problems on IIS and some FastCGI setups
-                header("Location: $location");
-        }
+function wp_redirect( $location, $status = 302 ) {
+        return apply_filters( 'pluggable-wp_redirect', null, $location, $status );
 }
+add_filter( 'pluggable-wp_redirect', '_wp_redirect', 10, 3 );
 endif;
 
 if ( !function_exists('wp_sanitize_redirect') ) :
 /**
  * Sanitizes a URL for use in a redirect.
  *
+ * @see _wp_sanitize_redirect()
+ *
  * @since 2.3
  *
  * @return string redirect-sanitized URL
  **/
-function wp_sanitize_redirect($location) {
-        $location = preg_replace('|[^a-z0-9-~+_.?#=&;,/:%!]|i', '', $location);
-        $location = wp_kses_no_null($location);
-
-        // remove %0d and %0a from location
-        $strip = array('%0d', '%0a');
-        $found = true;
-        while($found) {
-                $found = false;
-                foreach( (array) $strip as $val ) {
-                        while(strpos($location, $val) !== false) {
-                                $found = true;
-                                $location = str_replace($val, '', $location);
-                        }
-                }
-        }
-        return $location;
+function wp_sanitize_redirect( $location ) {
+        return apply_filters( 'pluggable-wp_sanitize_redirect', null, $location );
 }
+add_filter( 'pluggable-wp_sanitize_redirect', '_wp_sanitize_redirect', 10, 2 );
 endif;
 
 if ( !function_exists('wp_safe_redirect') ) :
@@ -907 +394 @@
  * instead. This prevents malicious redirects which redirect to another host,
  * but only used in a few places.
  *
+ * @see _wp_safe_redirect()
+ *
  * @since 2.3
  * @uses apply_filters() Calls 'allowed_redirect_hosts' on an array containing
  *              WordPress host string and $location host string.
  *
  * @return void Does not return anything
  **/
-function wp_safe_redirect($location, $status = 302) {
-
-        // Need to look at the URL the way it will end up in wp_redirect()
-        $location = wp_sanitize_redirect($location);
-
-        // browsers will assume 'http' is your protocol, and will obey a redirect to a URL starting with '//'
-        if ( substr($location, 0, 2) == '//' )
-                $location = 'http:' . $location;
-
-        // In php 5 parse_url may fail if the URL query part contains http://, bug #38143
-        $test = ( $cut = strpos($location, '?') ) ? substr( $location, 0, $cut ) : $location;
-
-        $lp  = parse_url($test);
-        $wpp = parse_url(get_option('home'));
-
-        $allowed_hosts = (array) apply_filters('allowed_redirect_hosts', array($wpp['host']), isset($lp['host']) ? $lp['host'] : '');
-
-        if ( isset($lp['host']) && ( !in_array($lp['host'], $allowed_hosts) && $lp['host'] != strtolower($wpp['host'])) )
-                $location = admin_url();
-
-        wp_redirect($location, $status);
+function wp_safe_redirect( $location, $status = 302 ) {
+        do_action( 'pluggable-wp_safe_redirect', $location, $status );
 }
+add_action( 'pluggable-wp_safe_redirect', '_wp_safe_redirect', 10, 2 );
 endif;
 
-if ( ! function_exists('wp_notify_postauthor') ) :
+if ( !function_exists('wp_notify_postauthor') ) :
 /**
  * Notify an author of a comment/trackback/pingback to one of their posts.
  *
+ * @see _wp_notify_postauthor()
+ *
  * @since 1.0.0
  *
  * @param int $comment_id Comment ID
  * @param string $comment_type Optional. The comment type either 'comment' (default), 'trackback', or 'pingback'
  * @return bool False if user email does not exist. True on completion.
  */
-function wp_notify_postauthor($comment_id, $comment_type='') {
-        $comment = get_comment($comment_id);
-        $post    = get_post($comment->comment_post_ID);
-        $user    = get_userdata( $post->post_author );
-        $current_user = wp_get_current_user();
-        
-        if ( $current_user->ID == $user->ID ) return false; // The author moderated a comment on his own post
-
-        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_option('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( __('URL    : %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( __('URL    : %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( __('URL    : %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";
-        $notify_message .= sprintf( __('Delete it: %s'), admin_url("comment.php?action=cdc&c=$comment_id") ) . "\r\n";
-        $notify_message .= sprintf( __('Spam it: %s'), admin_url("comment.php?action=cdc&dt=spam&c=$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>";
-        }
-
-        $message_headers = "$from\n"
-                . "Content-Type: text/plain; charset=\"" . get_option('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;
+function wp_notify_postauthor( $comment_id, $comment_type = '' ) {
+        return apply_filters( 'pluggable-wp_notify_postauthor', null, $comment_id, $comment_type );
 }
+add_filter( 'pluggable-wp_notify_postauthor', '_wp_notify_postauthor', 10, 3 );
 endif;
 
 if ( !function_exists('wp_notify_moderator') ) :
 /**
  * Notifies the moderator of the blog about a new comment that is awaiting approval.
  *
+ * @see _wp_notify_moderator()
+ *
  * @since 1.0
- * @uses $wpdb
  *
  * @param int $comment_id Comment ID
  * @return bool Always returns true
  */
-function wp_notify_moderator($comment_id) {
-        global $wpdb;
-
-        if( get_option( "moderation_notify" ) == 0 )
-                return true;
-
-        $comment = $wpdb->get_row($wpdb->prepare("SELECT * FROM $wpdb->comments WHERE comment_ID=%d LIMIT 1", $comment_id));
-        $post = $wpdb->get_row($wpdb->prepare("SELECT * FROM $wpdb->posts WHERE ID=%d LIMIT 1", $comment->comment_post_ID));
-
-        $comment_author_domain = @gethostbyaddr($comment->comment_author_IP);
-        $comments_waiting = $wpdb->get_var("SELECT count(comment_ID) FROM $wpdb->comments WHERE comment_approved = '0'");
-
-        switch ($comment->comment_type)
-        {
-                case 'trackback':
-                        $notify_message  = sprintf( __('A new trackback on the post #%1$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";
-                        $notify_message .= sprintf( __('Website : %1$s (IP: %2$s , %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";
-                        $notify_message .= sprintf( __('URL    : %s'), $comment->comment_author_url ) . "\r\n";
-                        $notify_message .= __('Trackback excerpt: ') . "\r\n" . $comment->comment_content . "\r\n\r\n";
-                        break;
-                case 'pingback':
-                        $notify_message  = sprintf( __('A new pingback on the post #%1$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";
-                        $notify_message .= sprintf( __('Website : %1$s (IP: %2$s , %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";
-                        $notify_message .= sprintf( __('URL    : %s'), $comment->comment_author_url ) . "\r\n";
-                        $notify_message .= __('Pingback excerpt: ') . "\r\n" . $comment->comment_content . "\r\n\r\n";
-                        break;
-                default: //Comments
-                        $notify_message  = sprintf( __('A new comment on the post #%1$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( __('URL    : %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";
-                        break;
-        }
-
-        $notify_message .= sprintf( __('Approve it: %s'),  admin_url("comment.php?action=mac&c=$comment_id") ) . "\r\n";
-        $notify_message .= sprintf( __('Delete it: %s'), admin_url("comment.php?action=cdc&c=$comment_id") ) . "\r\n";
-        $notify_message .= sprintf( __('Spam it: %s'), admin_url("comment.php?action=cdc&dt=spam&c=$comment_id") ) . "\r\n";
-
-        $notify_message .= sprintf( _n('Currently %s comment is waiting for approval. Please visit the moderation panel:',
-                'Currently %s comments are waiting for approval. Please visit the moderation panel:', $comments_waiting), number_format_i18n($comments_waiting) ) . "\r\n";
-        $notify_message .= admin_url("edit-comments.php?comment_status=moderated") . "\r\n";
-
-        $subject = sprintf( __('[%1$s] Please moderate: "%2$s"'), get_option('blogname'), $post->post_title );
-        $admin_email = get_option('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;
+function wp_notify_moderator( $comment_id ) {
+        return apply_filters( 'pluggable-wp_notify_moderator', null, $comment_id );
 }
+add_filter( 'pluggable-wp_notify_moderator', '_wp_notify_moderator', 10, 2 );
 endif;
 
 if ( !function_exists('wp_password_change_notification') ) :
 /**
  * Notify the blog admin of a user changing password, normally via email.
  *
+ * @see _wp_password_change_notification()
+ *
  * @since 2.7
  *
  * @param object $user User Object
  */
-function wp_password_change_notification(&$user) {
-        // send a copy of password change notification to the admin
-        // but check to see if it's the admin whose password we're changing, and skip this
-        if ( $user->user_email != get_option('admin_email') ) {
-                $message = sprintf(__('Password Lost and Changed for user: %s'), $user->user_login) . "\r\n";
-                wp_mail(get_option('admin_email'), sprintf(__('[%s] Password Lost/Changed'), get_option('blogname')), $message);
-        }
+function wp_password_change_notification( &$user ) {
+        do_action( 'pluggable-wp_password_change_notification', $user );
 }
+add_action( 'pluggable-wp_password_change_notification', '_wp_password_change_notification' );
 endif;
 
 if ( !function_exists('wp_new_user_notification') ) :
 /**
  * Notify the blog admin of a new user, normally via email.
  *
+ * @see _wp_new_user_notification()
+ *
  * @since 2.0
  *
  * @param int $user_id User ID
  * @param string $plaintext_pass Optional. The user's plaintext password
  */
-function wp_new_user_notification($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_option('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_option('admin_email'), sprintf(__('[%s] New User Registration'), get_option('blogname')), $message);
-
-        if ( empty($plaintext_pass) )
-                return;
-
-        $message  = sprintf(__('Username: %s'), $user_login) . "\r\n";
-        $message .= sprintf(__('Password: %s'), $plaintext_pass) . "\r\n";
-        $message .= wp_login_url() . "\r\n";
-
-        wp_mail($user_email, sprintf(__('[%s] Your username and password'), get_option('blogname')), $message);
-
+function wp_new_user_notification( $user_id, $plaintext_pass = '' ) {
+        do_action( 'pluggable-wp_new_user_notification', $user_id, $plaintext_pass );
 }
+add_action( 'pluggable-wp_new_user_notification', '_wp_new_user_notification', 10, 2 );
 endif;
 
 if ( !function_exists('wp_nonce_tick') ) :
 /**
  * Get the time-dependent variable for nonce creation.
  *
- * A nonce has a lifespan of two ticks. Nonces in their second tick may be
- * updated, e.g. by autosave.
+ * @see _wp_nonce_tick()
  *
  * @since 2.5
  *
  * @return int
  */
 function wp_nonce_tick() {
-        $nonce_life = apply_filters('nonce_life', 86400);
-
-        return ceil(time() / ( $nonce_life / 2 ));
+        return apply_filters( 'pluggable-wp_nonce_tick', null );
 }
+add_filter( 'pluggable-wp_nonce_tick', '_wp_nonce_tick' );
 endif;
 
 if ( !function_exists('wp_verify_nonce') ) :
@@ -1164 +499 @@
  * The user is given an amount of time to use the token, so therefore, since the
  * UID and $action remain the same, the independent variable is the time.
  *
+ * @see _wp_verify_nonce()
+ *
  * @since 2.0.3
  *
  * @param string $nonce Nonce that was used in the form to verify
  * @param string|int $action Should give context to what is taking place and be the same when nonce was created.
  * @return bool Whether the nonce check passed or failed.
  */
-function wp_verify_nonce($nonce, $action = -1) {
-        $user = wp_get_current_user();
-        $uid = (int) $user->id;
-
-        $i = wp_nonce_tick();
-
-        // Nonce generated 0-12 hours ago
-        if ( substr(wp_hash($i . $action . $uid, 'nonce'), -12, 10) == $nonce )
-                return 1;
-        // Nonce generated 12-24 hours ago
-        if ( substr(wp_hash(($i - 1) . $action . $uid, 'nonce'), -12, 10) == $nonce )
-                return 2;
-        // Invalid nonce
-        return false;
+function wp_verify_nonce( $nonce, $action = -1 ) {
+        return apply_filters( 'pluggable-wp_verify_nonce', null, $nonce, $action );
 }
+add_filter( 'pluggable-wp_verify_nonce', '_wp_verify_nonce', 10, 3 );
 endif;
 
 if ( !function_exists('wp_create_nonce') ) :
 /**
  * Creates a random, one time use token.
  *
+ * @see _wp_create_nonce()
+ *
  * @since 2.0.3
  *
  * @param string|int $action Scalar value to add context to the nonce.
  * @return string The one use form token
  */
-function wp_create_nonce($action = -1) {
-        $user = wp_get_current_user();
-        $uid = (int) $user->id;
-
-        $i = wp_nonce_tick();
-
-        return substr(wp_hash($i . $action . $uid, 'nonce'), -12, 10);
+function wp_create_nonce( $action = -1 ) {
+        return apply_filters( 'pluggable-wp_create_nonce', null, $action );
 }
+add_filter( 'pluggable-wp_create_nonce', '_wp_create_nonce', 10, 2 );
 endif;
 
 if ( !function_exists('wp_salt') ) :
 /**
  * Get salt to add to hashes to help prevent attacks.
  *
- * The secret key is located in two places: the database in case the secret key
- * isn't defined in the second place, which is in the wp-config.php file. If you
- * are going to set the secret key, then you must do so in the wp-config.php
- * file.
+ * @see _wp_salt()
  *
- * The secret key in the database is randomly generated and will be appended to
- * the secret key that is in wp-config.php file in some instances. It is
- * important to have the secret key defined or changed in wp-config.php.
- *
- * If you have installed WordPress 2.5 or later, then you will have the
- * SECRET_KEY defined in the wp-config.php already. You will want to change the
- * value in it because hackers will know what it is. If you have upgraded to
- * WordPress 2.5 or later version from a version before WordPress 2.5, then you
- * should add the constant to your wp-config.php file.
- *
- * Below is an example of how the SECRET_KEY constant is defined with a value.
- * You must not copy the below example and paste into your wp-config.php. If you
- * need an example, then you can have a
- * {@link https://api.wordpress.org/secret-key/1.1/ secret key created} for you.
- *
- * <code>
- * define('SECRET_KEY', 'mAry1HadA15|\/|b17w55w1t3asSn09w');
- * </code>
- *
- * Salting passwords helps against tools which has stored hashed values of
- * common dictionary strings. The added values makes it harder to crack if given
- * salt string is not weak.
- *
  * @since 2.5
  * @link https://api.wordpress.org/secret-key/1.1/ Create a Secret Key for wp-config.php
  *
  * @return string Salt value from either 'SECRET_KEY' or 'secret' option
  */
-function wp_salt($scheme = 'auth') {
-        global $wp_default_secret_key;
-        $secret_key = '';
-        if ( defined('SECRET_KEY') && ('' != SECRET_KEY) && ( $wp_default_secret_key != SECRET_KEY) )
-                $secret_key = SECRET_KEY;
-
-        if ( 'auth' == $scheme ) {
-                if ( defined('AUTH_KEY') && ('' != AUTH_KEY) && ( $wp_default_secret_key != AUTH_KEY) )
-                        $secret_key = AUTH_KEY;
-
-                if ( defined('AUTH_SALT') ) {
-                        $salt = AUTH_SALT;
-                } elseif ( defined('SECRET_SALT') ) {
-                        $salt = SECRET_SALT;
-                } else {
-                        $salt = get_option('auth_salt');
-                        if ( empty($salt) ) {
-                                $salt = wp_generate_password(64);
-                                update_option('auth_salt', $salt);
-                        }
-                }
-        } elseif ( 'secure_auth' == $scheme ) {
-                if ( defined('SECURE_AUTH_KEY') && ('' != SECURE_AUTH_KEY) && ( $wp_default_secret_key != SECURE_AUTH_KEY) )
-                        $secret_key = SECURE_AUTH_KEY;
-
-                if ( defined('SECURE_AUTH_SALT') ) {
-                        $salt = SECURE_AUTH_SALT;
-                } else {
-                        $salt = get_option('secure_auth_salt');
-                        if ( empty($salt) ) {
-                                $salt = wp_generate_password(64);
-                                update_option('secure_auth_salt', $salt);
-                        }
-                }
-        } elseif ( 'logged_in' == $scheme ) {
-                if ( defined('LOGGED_IN_KEY') && ('' != LOGGED_IN_KEY) && ( $wp_default_secret_key != LOGGED_IN_KEY) )
-                        $secret_key = LOGGED_IN_KEY;
-
-                if ( defined('LOGGED_IN_SALT') ) {
-                        $salt = LOGGED_IN_SALT;
-                } else {
-                        $salt = get_option('logged_in_salt');
-                        if ( empty($salt) ) {
-                                $salt = wp_generate_password(64);
-                                update_option('logged_in_salt', $salt);
-                        }
-                }
-        } elseif ( 'nonce' == $scheme ) {
-                if ( defined('NONCE_KEY') && ('' != NONCE_KEY) && ( $wp_default_secret_key != NONCE_KEY) )
-                        $secret_key = NONCE_KEY;
-
-                if ( defined('NONCE_SALT') ) {
-                        $salt = NONCE_SALT;
-                } else {
-                        $salt = get_option('nonce_salt');
-                        if ( empty($salt) ) {
-                                $salt = wp_generate_password(64);
-                                update_option('nonce_salt', $salt);
-                        }
-                }
-        } else {
-                // ensure each auth scheme has its own unique salt
-                $salt = hash_hmac('md5', $scheme, $secret_key);
-        }
-
-        return apply_filters('salt', $secret_key . $salt, $scheme);
+function wp_salt( $scheme = 'auth' ) {
+        return apply_filters( 'pluggable-wp_salt', null, $scheme );
 }
+add_filter( 'pluggable-wp_salt', '_wp_salt', 10, 2 );
 endif;
 
 if ( !function_exists('wp_hash') ) :
 /**
  * Get hash of given string.
  *
+ * @see _wp_hash()
+ *
  * @since 2.0.3
- * @uses wp_salt() Get WordPress salt
  *
  * @param string $data Plain text to hash
  * @return string Hash of $data
  */
-function wp_hash($data, $scheme = 'auth') {
-        $salt = wp_salt($scheme);
-
-        return hash_hmac('md5', $data, $salt);
+function wp_hash( $data, $scheme = 'auth' ) {
+        return apply_filters( 'pluggable-wp_hash', null, $data, $scheme );
 }
+add_filter( 'pluggable-wp_hash', '_wp_hash', 10, 3 );
 endif;
 
 if ( !function_exists('wp_hash_password') ) :
@@ -1336 +571 @@
  * For integration with other applications, this function can be overwritten to
  * instead use the other package password checking algorithm.
  *
+ * @see _wp_hash_password()
+ *
  * @since 2.5
  * @global object $wp_hasher PHPass object
  * @uses PasswordHash::HashPassword
@@ -1343 +580 @@
  * @param string $password Plain text user password to hash
  * @return string The hash string of the password
  */
-function wp_hash_password($password) {
-        global $wp_hasher;
-
-        if ( empty($wp_hasher) ) {
-                require_once( ABSPATH . 'wp-includes/class-phpass.php');
-                // By default, use the portable hash from phpass
-                $wp_hasher = new PasswordHash(8, TRUE);
-        }
-
-        return $wp_hasher->HashPassword($password);
+function wp_hash_password( $password ) {
+        return apply_filters( 'pluggable-wp_hash_password', null, $password );
 }
+add_filter( 'pluggable-wp_hash_password', '_wp_hash_password', 10, 2 );
 endif;
 
 if ( !function_exists('wp_check_password') ) :
 /**
- * Checks the plaintext password against the encrypted Password.
+ * Checks the plaintext password against the encrypted password.
  *
- * Maintains compatibility between old version and the new cookie authentication
- * protocol using PHPass library. The $hash parameter is the encrypted password
- * and the function compares the plain text password when encypted similarly
- * against the already encrypted password to see if they match.
- *
  * For integration with other applications, this function can be overwritten to
  * instead use the other package password checking algorithm.
  *
+ * @see _wp_check_password()
+ *
  * @since 2.5
  * @global object $wp_hasher PHPass object used for checking the password
  *      against the $hash + $password
@@ -1377 +604 @@
  * @param string $hash Hash of the user's password to check against.
  * @return bool False, if the $password does not match the hashed password
  */
-function wp_check_password($password, $hash, $user_id = '') {
-        global $wp_hasher;
-
-        // If the hash is still md5...
-        if ( strlen($hash) <= 32 ) {
-                $check = ( $hash == md5($password) );
-                if ( $check && $user_id ) {
-                        // Rehash using new hash.
-                        wp_set_password($password, $user_id);
-                        $hash = wp_hash_password($password);
-                }
-
-                return apply_filters('check_password', $check, $password, $hash, $user_id);
-        }
-
-        // If the stored hash is longer than an MD5, presume the
-        // new style phpass portable hash.
-        if ( empty($wp_hasher) ) {
-                require_once( ABSPATH . 'wp-includes/class-phpass.php');
-                // By default, use the portable hash from phpass
-                $wp_hasher = new PasswordHash(8, TRUE);
-        }
-
-        $check = $wp_hasher->CheckPassword($password, $hash);
-
-        return apply_filters('check_password', $check, $password, $hash, $user_id);
+function wp_check_password( $password, $hash, $user_id = '' ) {
+        return apply_filters( 'pluggable-wp_check_password', null, $password, $hash, $user_id );
 }
+add_filter( 'pluggable-wp_check_password', '_wp_check_password', 10, 4 );
 endif;
 
 if ( !function_exists('wp_generate_password') ) :
 /**
- * Generates a random password drawn from the defined set of characters.
+ * Generates a random password.
  *
+ * @see _wp_generate_password()
+ *
  * @since 2.5
  *
  * @param int $length The length of password to generate
  * @param bool $special_chars Whether to include standard special characters
  * @return string The random password
  **/
-function wp_generate_password($length = 12, $special_chars = true) {
-        $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
-        if ( $special_chars )
-                $chars .= '!@#$%^&*()';
-
-        $password = '';
-        for ( $i = 0; $i < $length; $i++ )
-                $password .= substr($chars, wp_rand(0, strlen($chars) - 1), 1);
-        return $password;
+function wp_generate_password( $length = 12, $special_chars = true ) {
+        return apply_filters( 'pluggable-wp_generate_password', null, $length, $special_chars );
 }
+add_filter( 'pluggable-wp_generate_password', '_wp_generate_password', 10, 3 );
 endif;
 
 if ( !function_exists('wp_rand') ) :
- /**
+/**
  * Generates a random number
  *
+ * @see _wp_rand()
+ *
  * @since 2.6.2
  *
  * @param int $min Lower limit for the generated number (optional, default is 0)
@@ -1439 +641 @@
  * @return int A random number between min and max
  */
 function wp_rand( $min = 0, $max = 0 ) {
-        global $rnd_value;
-
-        $seed = get_transient('random_seed');
-
-        // Reset $rnd_value after 14 uses
-        // 32(md5) + 40(sha1) + 40(sha1) / 8 = 14 random numbers from $rnd_value
-        if ( strlen($rnd_value) < 8 ) {
-                $rnd_value = md5( uniqid(microtime() . mt_rand(), true ) . $seed );
-                $rnd_value .= sha1($rnd_value);
-                $rnd_value .= sha1($rnd_value . $seed);
-                $seed = md5($seed . $rnd_value);
-                set_transient('random_seed', $seed);
-        }
-
-        // Take the first 8 digits for our value
-        $value = substr($rnd_value, 0, 8);
-
-        // Strip the first eight, leaving the remainder for the next call to wp_rand().
-        $rnd_value = substr($rnd_value, 8);
-
-        $value = abs(hexdec($value));
-
-        // Reduce the value to be within the min - max range
-        // 4294967295 = 0xffffffff = max random number
-        if ( $max != 0 )
-                $value = $min + (($max - $min + 1) * ($value / (4294967295 + 1)));
-
-        return abs(intval($value));
+        return apply_filters( 'pluggable-wp_rand', null, $min, $max );
 }
+add_filter( 'pluggable-wp_rand', '_wp_rand', 10, 3 );
 endif;
 
 if ( !function_exists('wp_set_password') ) :
@@ -1477 +653 @@
  * For integration with other applications, this function can be overwritten to
  * instead use the other package password checking algorithm.
  *
+ * @see _wp_set_password()
+ *
  * @since 2.5
  * @uses $wpdb WordPress database object for queries
  * @uses wp_hash_password() Used to encrypt the user's password before passing to the database
@@ -1485 +663 @@
  * @param int $user_id User ID
  */
 function wp_set_password( $password, $user_id ) {
-        global $wpdb;
-
-        $hash = wp_hash_password($password);
-        $wpdb->update($wpdb->users, array('user_pass' => $hash, 'user_activation_key' => ''), array('ID' => $user_id) );
-
-        wp_cache_delete($user_id, 'users');
+        do_action( 'pluggable-wp_set_password', $password, $user_id );
 }
+add_action( 'pluggable-wp_set_password', '_wp_set_password', 10, 2 );
 endif;
 
 if ( !function_exists( 'get_avatar' ) ) :
 /**
  * Retrieve the avatar for a user who provided a user ID or email address.
  *
+ * @see _get_avatar()
+ *
  * @since 2.5
  * @param int|string|object $id_or_email A user ID,  email address, or comment object
  * @param int $size Size of the avatar image
@@ -1506 +682 @@
  * @return string <img> tag for the user's avatar
 */
 function get_avatar( $id_or_email, $size = '96', $default = '', $alt = false ) {
-        if ( ! get_option('show_avatars') )
-                return false;
-
-        if ( false === $alt)
-                $safe_alt = '';
-        else
-                $safe_alt = attr( $alt );
-
-        if ( !is_numeric($size) )
-                $size = '96';
-
-        $email = '';
-        if ( is_numeric($id_or_email) ) {
-                $id = (int) $id_or_email;
-                $user = get_userdata($id);
-                if ( $user )
-                        $email = $user->user_email;
-        } elseif ( is_object($id_or_email) ) {
-                if ( isset($id_or_email->comment_type) && '' != $id_or_email->comment_type && 'comment' != $id_or_email->comment_type )
-                        return false; // No avatar for pingbacks or trackbacks
-
-                if ( !empty($id_or_email->user_id) ) {
-                        $id = (int) $id_or_email->user_id;
-                        $user = get_userdata($id);
-                        if ( $user)
-                                $email = $user->user_email;
-                } elseif ( !empty($id_or_email->comment_author_email) ) {
-                        $email = $id_or_email->comment_author_email;
-                }
-        } else {
-                $email = $id_or_email;
-        }
-
-        if ( empty($default) ) {
-                $avatar_default = get_option('avatar_default');
-                if ( empty($avatar_default) )
-                        $default = 'mystery';
-                else
-                        $default = $avatar_default;
-        }
-
-        if ( is_ssl() )
-                $host = 'https://secure.gravatar.com';
-        else
-                $host = 'http://www.gravatar.com';
-
-        if ( 'mystery' == $default )
-                $default = "$host/avatar/ad516503a11cd5ca435acc9bb6523536?s={$size}"; // ad516503a11cd5ca435acc9bb6523536 == md5('unknown@gravatar.com')
-        elseif ( 'blank' == $default )
-                $default = includes_url('images/blank.gif');
-        elseif ( !empty($email) && 'gravatar_default' == $default )
-                $default = '';
-        elseif ( 'gravatar_default' == $default )
-                $default = "$host/avatar/s={$size}";
-        elseif ( empty($email) )
-                $default = "$host/avatar/?d=$default&amp;s={$size}";
-        elseif ( strpos($default, 'http://') === 0 )
-                $default = add_query_arg( 's', $size, $default );
-
-        if ( !empty($email) ) {
-                $out = "$host/avatar/";
-                $out .= md5( strtolower( $email ) );
-                $out .= '?s='.$size;
-                $out .= '&amp;d=' . urlencode( $default );
-
-                $rating = get_option('avatar_rating');
-                if ( !empty( $rating ) )
-                        $out .= "&amp;r={$rating}";
-
-                $avatar = "<img alt='{$safe_alt}' src='{$out}' class='avatar avatar-{$size} photo' height='{$size}' width='{$size}' />";
-        } else {
-                $avatar = "<img alt='{$safe_alt}' src='{$default}' class='avatar avatar-{$size} photo avatar-default' height='{$size}' width='{$size}' />";
-        }
-
-        return apply_filters('get_avatar', $avatar, $id_or_email, $size, $default, $alt);
+        return apply_filters( 'pluggable-get_avatar', null, $id_or_email, $size, $default, $alt );
 }
+add_filter( 'pluggable-get_avatar', '_get_avatar', 10, 5 );
 endif;
 
 if ( !function_exists('wp_setcookie') ) :
@@ -1658 +761 @@
  * @param bool $deprecated Not used
  * @return bool False on login failure, true on successful check
  */
-function wp_login($username, $password, $deprecated = '') {
+function wp_login( $username, $password, $deprecated = '' ) {
         global $error;
 
         $user = wp_authenticate($username, $password);
@@ -1679 +782 @@
  * HTML, so the primary use is for displaying the changes. If the two strings
  * are equivalent, then an empty string will be returned.
  *
- * The arguments supported and can be changed are listed below.
+ * @see _wp_text_diff()
  *
- * 'title' : Default is an empty string. Titles the diff in a manner compatible
- *              with the output.
- * 'title_left' : Default is an empty string. Change the HTML to the left of the
- *              title.
- * 'title_right' : Default is an empty string. Change the HTML to the right of
- *              the title.
- *
  * @since 2.6
  * @see wp_parse_args() Used to change defaults to user defined settings.
  * @uses Text_Diff
@@ -1699 +795 @@
  * @return string Empty string if strings are equivalent or HTML with differences.
  */
 function wp_text_diff( $left_string, $right_string, $args = null ) {
-        $defaults = array( 'title' => '', 'title_left' => '', 'title_right' => '' );
-        $args = wp_parse_args( $args, $defaults );
-
-        if ( !class_exists( 'WP_Text_Diff_Renderer_Table' ) )
-                require( ABSPATH . WPINC . '/wp-diff.php' );
-
-        $left_string  = normalize_whitespace($left_string);
-        $right_string = normalize_whitespace($right_string);
-
-        $left_lines  = split("\n", $left_string);
-        $right_lines = split("\n", $right_string);
-
-        $text_diff = new Text_Diff($left_lines, $right_lines);
-        $renderer  = new WP_Text_Diff_Renderer_Table();
-        $diff = $renderer->render($text_diff);
-
-        if ( !$diff )
-                return '';
-
-        $r  = "<table class='diff'>\n";
-        $r .= "<col class='ltype' /><col class='content' /><col class='ltype' /><col class='content' />";
-
-        if ( $args['title'] || $args['title_left'] || $args['title_right'] )
-                $r .= "<thead>";
-        if ( $args['title'] )
-                $r .= "<tr class='diff-title'><th colspan='4'>$args[title]</th></tr>\n";
-        if ( $args['title_left'] || $args['title_right'] ) {
-                $r .= "<tr class='diff-sub-title'>\n";
-                $r .= "\t<td></td><th>$args[title_left]</th>\n";
-                $r .= "\t<td></td><th>$args[title_right]</th>\n";
-                $r .= "</tr>\n";
-        }
-        if ( $args['title'] || $args['title_left'] || $args['title_right'] )
-                $r .= "</thead>\n";
-
-        $r .= "<tbody>\n$diff\n</tbody>\n";
-        $r .= "</table>";
-
-        return $r;
+        return apply_filters( 'pluggable-wp_text_diff', null, $left_string, $right_string, $args );
 }
+add_filter( 'pluggable-wp_text_diff', '_wp_text_diff', 10, 4 );
 endif;
 
 ?>

wp-includes/user.php

@@ -130 +130 @@
 }
 
 /**
+ * Changes the current user by ID or name.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_set_current_user()
+ *
+ * Set $id to null and specify a name if you do not know a user's ID.
+ *
+ * Some WordPress functionality is based on the current user and not based on
+ * the signed in user. Therefore, it opens the ability to edit and perform
+ * actions on users who aren't signed in.
+ *
+ * @since 2.8.0
+ * @global object $current_user The current user object which holds the user data.
+ * @uses do_action() Calls 'set_current_user' hook after setting the current user.
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-wp_set_current_user" filter.
+ * @param int $id User ID
+ * @param string $name User's username
+ * @return WP_User Current user User object
+ */
+function _wp_set_current_user( $existing = null, $id, $name = '' ) {
+        if ( null !== $existing )
+                return $existing;
+
+        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;
+}
+
+/**
+ * Retrieve the current user object.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_get_current_user()
+ *
+ * @since 2.8.0
+ * @uses get_currentuserinfo() Populates the global user variables.
+ *
+ * @return WP_User Current user WP_User object
+ */
+function _wp_get_current_user() {
+        global $current_user;
+
+        get_currentuserinfo();
+
+        return $current_user;
+}
+
+/**
+ * Populate global variables with information about the currently logged in user.
+ *
+ * Will set the current user, if the current user is not set. The current user
+ * will be set to the logged in person. If no user is logged in, then it will
+ * set the current user to 0, which is invalid and won't have any permissions.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see get_currentuserinfo()
+ *
+ * @since 2.8.0
+ * @uses $current_user Checks if the current user is set
+ * @uses wp_validate_auth_cookie() Retrieves current logged in user.
+ *
+ * @return bool|null False on XMLRPC Request and invalid auth cookie. Null when current user set.
+ */
+function _get_currentuserinfo() {
+        global $current_user;
+
+        if ( defined('XMLRPC_REQUEST') && XMLRPC_REQUEST )
+                return false;
+
+        if ( !empty($current_user) )
+                return;
+
+        if ( !$user = wp_validate_auth_cookie() ) {
+                if ( empty($_COOKIE[LOGGED_IN_COOKIE]) || !$user = wp_validate_auth_cookie($_COOKIE[LOGGED_IN_COOKIE], 'logged_in') ) {
+                        wp_set_current_user(0);
+                        return false;
+                }
+        }
+
+        wp_set_current_user($user);
+}
+
+/**
+ * Retrieve user info by user ID.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see get_userdata()
+ *
+ * @since 2.8.0
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-get_userdata" filter.
+ * @param int $user_id User ID
+ * @return bool|object False on failure, User DB row object
+ */
+function _get_userdata( $existing = null, $user_id ) {
+        if ( null !== $existing )
+                return $existing;
+
+        global $wpdb;
+
+        $user_id = absint($user_id);
+        if ( $user_id == 0 )
+                return false;
+
+        $user = wp_cache_get($user_id, 'users');
+
+        if ( $user )
+                return $user;
+
+        if ( !$user = $wpdb->get_row($wpdb->prepare("SELECT * FROM $wpdb->users WHERE ID = %d LIMIT 1", $user_id)) )
+                return false;
+
+        _fill_user($user);
+
+        return $user;
+}
+
+/**
+ * Retrieve user info by a given field
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see get_user_by()
+ *
+ * @since 2.8.0
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-get_user_by" filter.
+ * @param string $field The field to retrieve the user with.  id | slug | email | login
+ * @param int|string $value A value for $field.  A user ID, slug, email address, or login name.
+ * @return bool|object False on failure, User DB row object
+ */
+function _get_user_by( $existing = null, $field, $value ) {
+        if ( null !== $existing )
+                return $existing;
+
+        global $wpdb;
+
+        switch ($field) {
+                case 'id':
+                        return get_userdata($value);
+                        break;
+                case 'slug':
+                        $user_id = wp_cache_get($value, 'userslugs');
+                        $field = 'user_nicename';
+                        break;
+                case 'email':
+                        $user_id = wp_cache_get($value, 'useremail');
+                        $field = 'user_email';
+                        break;
+                case 'login':
+                        $value = sanitize_user( $value );
+                        $user_id = wp_cache_get($value, 'userlogins');
+                        $field = 'user_login';
+                        break;
+                default:
+                        return false;
+        }
+
+         if ( false !== $user_id )
+                return get_userdata($user_id);
+
+        if ( !$user = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->users WHERE $field = %s", $value) ) )
+                return false;
+
+        _fill_user($user);
+
+        return $user;
+}
+
+/**
+ * Checks a user's login information and logs them in if it checks out.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_authenticate()
+ *
+ * @since 2.8.0
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-wp_set_current_user" filter.
+ * @param string $username User's username
+ * @param string $password User's password
+ * @return WP_Error|WP_User WP_User object if login successful, otherwise WP_Error object.
+ */
+function _wp_authenticate( $existing = null, $username, $password ) {
+        if ( null !== $existing )
+                return $existing;
+
+        $username = sanitize_user($username);
+        $password = trim($password);
+
+        $user = apply_filters('authenticate', null, $username, $password);
+
+        if ( $user == null ) {
+                // TODO what should the error message be? (Or would these even happen?)
+                // Only needed if all authentication handlers fail to return anything.
+                $user = new WP_Error('authentication_failed', __('<strong>ERROR</strong>: Invalid username or incorrect password.'));
+        }
+
+        $ignore_codes = array('empty_username', 'empty_password');
+
+        if ( is_wp_error($user) && !in_array($user->get_error_code(), $ignore_codes) ) {
+                do_action('wp_login_failed', $username);
+        }
+
+        return $user;
+}
+
+/**
+ * Log the current user out.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_logout()
+ *
+ * @since 2.5.0
+ */
+function _wp_logout() {
+        wp_clear_auth_cookie();
+        do_action('wp_logout');
+}
+
+/**
+ * Validates authentication cookie.
+ *
+ * The checks include making sure that the authentication cookie is set and
+ * pulling in the contents (if $cookie is not used).
+ *
+ * Makes sure the cookie is not expired. Verifies the hash in cookie is what is
+ * should be and compares the two.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_validate_auth_cookie()
+ *
+ * @since 2.8.0
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-wp_validate_auth_cookie" filter.
+ * @param string $cookie Optional. If used, will validate contents instead of cookie's
+ * @param string $scheme Optional. The cookie scheme to use: auth, secure_auth, or logged_in
+ * @return bool|int False if invalid cookie, User ID if valid.
+ */
+function _wp_validate_auth_cookie( $existing = null, $cookie = '', $scheme = '' ) {
+        if ( null !== $existing )
+                return $existing;
+
+        if ( ! $cookie_elements = wp_parse_auth_cookie( $cookie, $scheme ) ) {
+                do_action('auth_cookie_malformed', $cookie, $scheme);
+                return false;
+        }
+
+        extract($cookie_elements, EXTR_OVERWRITE);
+
+        $expired = $expiration;
+
+        // Allow a grace period for POST and AJAX requests
+        if ( defined('DOING_AJAX') || 'POST' == $_SERVER['REQUEST_METHOD'] )
+                $expired += 3600;
+
+        // Quick check to see if an honest cookie has expired
+        if ( $expired < time() ) {
+                do_action('auth_cookie_expired', $cookie_elements);
+                return false;
+        }
+
+        $user = get_userdatabylogin($username);
+        if ( ! $user ) {
+                do_action('auth_cookie_bad_username', $cookie_elements);
+                return false;
+        }
+
+        $pass_frag = substr($user->user_pass, 8, 4);
+
+        $key = wp_hash($username . $pass_frag . '|' . $expiration, $scheme);
+        $hash = hash_hmac('md5', $username . '|' . $expiration, $key);
+
+        if ( $hmac != $hash ) {
+                do_action('auth_cookie_bad_hash', $cookie_elements);
+                return false;
+        }
+
+        do_action('auth_cookie_valid', $cookie_elements, $user);
+
+        return $user->ID;
+}
+
+/**
+ * Generate authentication cookie contents.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_generate_auth_cookie()
+ *
+ * @since 2.8.0
+ * @uses apply_filters() Calls 'auth_cookie' hook on $cookie contents, User ID
+ *              and expiration of cookie.
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-wp_generate_auth_cookie" filter.
+ * @param int $user_id User ID
+ * @param int $expiration Cookie expiration in seconds
+ * @param string $scheme Optional. The cookie scheme to use: auth, secure_auth, or logged_in
+ * @return string Authentication cookie contents
+ */
+function _wp_generate_auth_cookie( $existing = null, $user_id, $expiration, $scheme = 'auth' ) {
+        if ( null !== $existing )
+                return $existing;
+
+        $user = get_userdata($user_id);
+
+        $pass_frag = substr($user->user_pass, 8, 4);
+
+        $key = wp_hash($user->user_login . $pass_frag . '|' . $expiration, $scheme);
+        $hash = hash_hmac('md5', $user->user_login . '|' . $expiration, $key);
+
+        $cookie = $user->user_login . '|' . $expiration . '|' . $hash;
+
+        return apply_filters('auth_cookie', $cookie, $user_id, $expiration, $scheme);
+}
+
+/**
+ * Parse a cookie into its components
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_parse_auth_cookie()
+ *
+ * @since 2.8.0
+ *
+ * @param mixed $existing Any existing data provided by another function in the "pluggable-wp_parse_auth_cookie" filter.
+ * @param string $cookie
+ * @param string $scheme Optional. The cookie scheme to use: auth, secure_auth, or logged_in
+ * @return array Authentication cookie components
+ */
+function _wp_parse_auth_cookie( $existing = null, $cookie = '', $scheme = '' ) {
+        if ( null !== $existing )
+                return $existing;
+
+        if ( empty($cookie) ) {
+                switch ($scheme) {
+                        case 'auth':
+                                $cookie_name = AUTH_COOKIE;
+                                break;
+                        case 'secure_auth':
+                                $cookie_name = SECURE_AUTH_COOKIE;
+                                break;
+                        case "logged_in":
+                                $cookie_name = LOGGED_IN_COOKIE;
+                                break;
+                        default:
+                                if ( is_ssl() ) {
+                                        $cookie_name = SECURE_AUTH_COOKIE;
+                                        $scheme = 'secure_auth';
+                                } else {
+                                        $cookie_name = AUTH_COOKIE;
+                                        $scheme = 'auth';
+                                }
+                }
+
+                if ( empty($_COOKIE[$cookie_name]) )
+                        return false;
+                $cookie = $_COOKIE[$cookie_name];
+        }
+
+        $cookie_elements = explode('|', $cookie);
+        if ( count($cookie_elements) != 3 )
+                return false;
+
+        list($username, $expiration, $hmac) = $cookie_elements;
+
+        return compact('username', 'expiration', 'hmac', 'scheme');
+}
+
+/**
+ * Sets the authentication cookies based User ID.
+ *
+ * The $remember parameter increases the time that the cookie will be kept. The
+ * default the cookie is kept without remembering is two days. When $remember is
+ * set, the cookies will be kept for 14 days or two weeks.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_set_auth_cookie()
+ *
+ * @since 2.8.0
+ *
+ * @param int $user_id User ID
+ * @param bool $remember Whether to remember the user or not
+ */
+function _wp_set_auth_cookie( $user_id, $remember = false, $secure = '' ) {
+        if ( $remember ) {
+                $expiration = $expire = time() + apply_filters('auth_cookie_expiration', 1209600, $user_id, $remember);
+        } else {
+                $expiration = time() + apply_filters('auth_cookie_expiration', 172800, $user_id, $remember);
+                $expire = 0;
+        }
+
+        if ( '' === $secure )
+                $secure = is_ssl() ? true : false;
+
+        if ( $secure ) {
+                $auth_cookie_name = SECURE_AUTH_COOKIE;
+                $scheme = 'secure_auth';
+        } else {
+                $auth_cookie_name = AUTH_COOKIE;
+                $scheme = 'auth';
+        }
+
+        $auth_cookie = wp_generate_auth_cookie($user_id, $expiration, $scheme);
+        $logged_in_cookie = wp_generate_auth_cookie($user_id, $expiration, 'logged_in');
+
+        do_action('set_auth_cookie', $auth_cookie, $expire, $expiration, $user_id, $scheme);
+        do_action('set_logged_in_cookie', $logged_in_cookie, $expire, $expiration, $user_id, 'logged_in');
+
+        // Set httponly if the php version is >= 5.2.0
+        if ( version_compare(phpversion(), '5.2.0', 'ge') ) {
+                setcookie($auth_cookie_name, $auth_cookie, $expire, PLUGINS_COOKIE_PATH, COOKIE_DOMAIN, $secure, true);
+                setcookie($auth_cookie_name, $auth_cookie, $expire, ADMIN_COOKIE_PATH, COOKIE_DOMAIN, $secure, true);
+                setcookie(LOGGED_IN_COOKIE, $logged_in_cookie, $expire, COOKIEPATH, COOKIE_DOMAIN, false, true);
+                if ( COOKIEPATH != SITECOOKIEPATH )
+                        setcookie(LOGGED_IN_COOKIE, $logged_in_cookie, $expire, SITECOOKIEPATH, COOKIE_DOMAIN, false, true);
+        } else {
+                $cookie_domain = COOKIE_DOMAIN;
+                if ( !empty($cookie_domain) )
+                        $cookie_domain .= '; HttpOnly';
+                setcookie($auth_cookie_name, $auth_cookie, $expire, PLUGINS_COOKIE_PATH, $cookie_domain, $secure);
+                setcookie($auth_cookie_name, $auth_cookie, $expire, ADMIN_COOKIE_PATH, $cookie_domain, $secure);
+                setcookie(LOGGED_IN_COOKIE, $logged_in_cookie, $expire, COOKIEPATH, $cookie_domain);
+                if ( COOKIEPATH != SITECOOKIEPATH )
+                        setcookie(LOGGED_IN_COOKIE, $logged_in_cookie, $expire, SITECOOKIEPATH, $cookie_domain);
+        }
+}
+
+/**
+ * Removes all of the cookies associated with authentication.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_clear_auth_cookie()
+ *
+ * @since 2.8.0
+ */
+function _wp_clear_auth_cookie() {
+        do_action('clear_auth_cookie');
+
+        setcookie(AUTH_COOKIE, ' ', time() - 31536000, ADMIN_COOKIE_PATH, COOKIE_DOMAIN);
+        setcookie(SECURE_AUTH_COOKIE, ' ', time() - 31536000, ADMIN_COOKIE_PATH, COOKIE_DOMAIN);
+        setcookie(AUTH_COOKIE, ' ', time() - 31536000, PLUGINS_COOKIE_PATH, COOKIE_DOMAIN);
+        setcookie(SECURE_AUTH_COOKIE, ' ', time() - 31536000, PLUGINS_COOKIE_PATH, COOKIE_DOMAIN);
+        setcookie(LOGGED_IN_COOKIE, ' ', time() - 31536000, COOKIEPATH, COOKIE_DOMAIN);
+        setcookie(LOGGED_IN_COOKIE, ' ', time() - 31536000, SITECOOKIEPATH, COOKIE_DOMAIN);
+
+        // Old cookies
+        setcookie(AUTH_COOKIE, ' ', time() - 31536000, COOKIEPATH, COOKIE_DOMAIN);
+        setcookie(AUTH_COOKIE, ' ', time() - 31536000, SITECOOKIEPATH, COOKIE_DOMAIN);
+        setcookie(SECURE_AUTH_COOKIE, ' ', time() - 31536000, COOKIEPATH, COOKIE_DOMAIN);
+        setcookie(SECURE_AUTH_COOKIE, ' ', time() - 31536000, SITECOOKIEPATH, COOKIE_DOMAIN);
+
+        // Even older cookies
+        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);
+}
+
+/**
+ * Checks if the current visitor is a logged in user.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see is_user_logged_in()
+ *
+ * @since 2.8.0
+ *
+ * @return bool True if user is logged in, false if not logged in.
+ */
+function _is_user_logged_in() {
+        $user = wp_get_current_user();
+
+        if ( $user->id == 0 )
+                return false;
+
+        return true;
+}
+
+/**
+ * Checks if a user is logged in, if not it redirects them to the login page.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see auth_redirect()
+ *
+ * @since 2.8.0
+ */
+function _auth_redirect() {
+        if ( is_ssl() || force_ssl_admin() )
+                $secure = true;
+        else
+                $secure = false;
+
+        // If https is required and request is http, redirect
+        if ( $secure && !is_ssl() && false !== strpos($_SERVER['REQUEST_URI'], 'wp-admin') ) {
+                if ( 0 === strpos($_SERVER['REQUEST_URI'], 'http') ) {
+                        wp_redirect(preg_replace('|^http://|', 'https://', $_SERVER['REQUEST_URI']));
+                        exit();
+                } else {
+                        wp_redirect('https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
+                        exit();
+                }
+        }
+
+        if ( $user_id = wp_validate_auth_cookie() ) {
+                do_action('auth_redirect', $user_id);
+
+                // If the user wants ssl but the session is not ssl, redirect.
+                if ( !$secure && get_user_option('use_ssl', $user_id) && false !== strpos($_SERVER['REQUEST_URI'], 'wp-admin') ) {
+                        if ( 0 === strpos($_SERVER['REQUEST_URI'], 'http') ) {
+                                wp_redirect(preg_replace('|^http://|', 'https://', $_SERVER['REQUEST_URI']));
+                                exit();
+                        } else {
+                                wp_redirect('https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
+                                exit();
+                        }
+                }
+
+                return;  // The cookie is good so we're done
+        }
+
+        // The cookie is no good so force login
+        nocache_headers();
+
+        if ( is_ssl() )
+                $proto = 'https://';
+        else
+                $proto = 'http://';
+
+        $redirect = ( strpos($_SERVER['REQUEST_URI'], '/options.php') && wp_get_referer() ) ? wp_get_referer() : $proto . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
+
+        $login_url = wp_login_url($redirect);
+
+        wp_redirect($login_url);
+        exit();
+}
+
+/**
  * Retrieve user data based on field.
  *
  * Use get_profile() will make a database query to get the value of the table
@@ -191 +734 @@
         return true;
 }
 
+/**
+ * Updates the user's password with a new encrypted one.
+ *
+ * This function should not be used directly. Use the pluggable version instead.
+ * @see wp_set_password()
+ *
+ * @since 2.8.0
+ * @uses $wpdb WordPress database object for queries
+ * @uses wp_hash_password() Used to encrypt the user's password before passing to the database
+ *
+ * @param string $password The plaintext new user password
+ * @param int $user_id User ID
+ */
+function _wp_set_password( $password, $user_id ) {
+        global $wpdb;
+
+        $hash = wp_hash_password($password);
+        $wpdb->update($wpdb->users, array('user_pass' => $hash, 'user_activation_key' => ''), array('ID' => $user_id) );
+
+        wp_cache_delete($user_id, 'users');
+}
+
 //
 // User option functions
 //