elTrauko

Topic: Problema en wp-admin...

Instale WP y me da el siguiente error al ingresar a /wp-admin/index.php

Warning: Cannot modify header information - headers already sent by (output started at /home/traukoo/public_html/bitacora/wp-config.php:1) in /home/traukoo/public_html/bitacora/wp-includes/pluggable.php on line 770

primero instale wp 2.6 en mi computador, la instalación y no tengo problemas, al subir todo al servidor funciona wp pero la administración no. He borrado todo, re-instalado y nada.
Hice cambio de plantilla accediendo a mysql y funciona igual, pero no la administración.

Se agradece cualquier ayuda.

Enana

Re: Problema en wp-admin...

Prueba a cambiar tu archivo wp-login.php por éste:

Code:
<?php
require( dirname(__FILE__) . '/wp-config.php' );

// Rather than duplicating this HTML all over the place, we'll stick it in function
function login_header($title = 'Login', $message = '', $wp_error = '') {
    global $error;

    if ( empty($wp_error) )
        $wp_error = new WP_Error();
    ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" <?php language_attributes(); ?>>
<head>
    <title><?php bloginfo('name'); ?> &rsaquo; <?php echo $title; ?></title>
    <meta http-equiv="Content-Type" content="<?php bloginfo('html_type'); ?>; charset=<?php bloginfo('charset'); ?>" />
    <?php
    wp_admin_css( 'css/login' );
    wp_admin_css( 'css/colors-fresh' );
    ?>
    <script type="text/javascript">
        function focusit() {
            document.getElementById('user_login').focus();
        }
        window.onload = focusit;
    </script>
<?php do_action('login_head'); ?>
</head>
<body class="login">

<div id="login"><h1><a href="<?php echo apply_filters('login_headerurl', 'http://wordpress.org/'); ?>" title="<?php echo apply_filters('login_headertitle', __('Powered by WordPress')); ?>"><?php bloginfo('name'); ?></a></h1>
<?php
    if ( !empty( $message ) ) echo apply_filters('login_message', $message) . "\n";

    // Incase a plugin uses $error rather than the $errors object
    if ( !empty( $error ) ) {
        $wp_error->add('error', $error);
        unset($error);
    }

    if ( $wp_error->get_error_code() ) {
        $errors = '';
        $messages = '';
        foreach ( $wp_error->get_error_codes() as $code ) {
            $severity = $wp_error->get_error_data($code);
            foreach ( $wp_error->get_error_messages($code) as $error ) {
                if ( 'message' == $severity )
                    $messages .= '    ' . $error . "<br />\n";
                else
                    $errors .= '    ' . $error . "<br />\n";
            }
        }
        if ( !empty($errors) )
            echo '<div id="login_error">' . apply_filters('login_errors', $errors) . "</div>\n";
        if ( !empty($messages) )
            echo '<p class="message">' . apply_filters('login_messages', $messages) . "</p>\n";
    }
} // End of login_header()

function retrieve_password() {
    global $wpdb;

    $errors = new WP_Error();

    if ( empty( $_POST['user_login'] ) && empty( $_POST['user_email'] ) )
        $errors->add('empty_username', __('<strong>ERROR</strong>: Enter a username or e-mail address.'));

    if ( strstr($_POST['user_login'], '@') ) {
        $user_data = get_user_by_email(trim($_POST['user_login']));
        if ( empty($user_data) )
            $errors->add('invalid_email', __('<strong>ERROR</strong>: There is no user registered with that email address.'));
    } else {
        $login = trim($_POST['user_login']);
        $user_data = get_userdatabylogin($login);
    }

    do_action('lostpassword_post');

    if ( $errors->get_error_code() )
        return $errors;

    if ( !$user_data ) {
        $errors->add('invalidcombo', __('<strong>ERROR</strong>: Invalid username or e-mail.'));
        return $errors;
    }

    // redefining user_login ensures we return the right case in the email
    $user_login = $user_data->user_login;
    $user_email = $user_data->user_email;

    do_action('retreive_password', $user_login);  // Misspelled and deprecated
    do_action('retrieve_password', $user_login);

    $key = $wpdb->get_var($wpdb->prepare("SELECT user_activation_key FROM $wpdb->users WHERE user_login = %s", $user_login));
    if ( empty($key) ) {
        // Generate something random for a key...
        $key = wp_generate_password(20, false);
        do_action('retrieve_password_key', $user_login, $key);
        // Now insert the new md5 key into the db
        $wpdb->query($wpdb->prepare("UPDATE $wpdb->users SET user_activation_key = %s WHERE user_login = %s", $key, $user_login));
    }
    $message = __('Someone has asked to reset the password for the following site and username.') . "\r\n\r\n";
    $message .= get_option('siteurl') . "\r\n\r\n";
    $message .= sprintf(__('Username: %s'), $user_login) . "\r\n\r\n";
    $message .= __('To reset your password visit the following address, otherwise just ignore this email and nothing will happen.') . "\r\n\r\n";
    $message .= get_option('siteurl') . "/wp-login.php?action=rp&key=$key\r\n";

    if ( !wp_mail($user_email, sprintf(__('[%s] Password Reset'), get_option('blogname')), $message) )
        die('<p>' . __('The e-mail could not be sent.') . "<br />\n" . __('Possible reason: your host may have disabled the mail() function...') . '</p>');

    return true;
}

function reset_password($key) {
    global $wpdb;

    $key = preg_replace('/[^a-z0-9]/i', '', $key);

    if ( empty( $key ) )
        return new WP_Error('invalid_key', __('Invalid key'));

    $user = $wpdb->get_row($wpdb->prepare("SELECT * FROM $wpdb->users WHERE user_activation_key = %s", $key));
    if ( empty( $user ) )
        return new WP_Error('invalid_key', __('Invalid key'));

    do_action('password_reset', $user);

    // Generate something random for a password...
    $new_pass = wp_generate_password();
    wp_set_password($new_pass, $user->ID);
    $message  = sprintf(__('Username: %s'), $user->user_login) . "\r\n";
    $message .= sprintf(__('Password: %s'), $new_pass) . "\r\n";
    $message .= get_option('siteurl') . "/wp-login.php\r\n";

    if (  !wp_mail($user->user_email, sprintf(__('[%s] Your new password'), get_option('blogname')), $message) )
        die('<p>' . __('The e-mail could not be sent.') . "<br />\n" . __('Possible reason: your host may have disabled the mail() function...') . '</p>');

    // 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);
    }

    return true;
}

function register_new_user($user_login, $user_email) {
    $errors = new WP_Error();

    $user_login = sanitize_user( $user_login );
    $user_email = apply_filters( 'user_registration_email', $user_email );

    // Check the username
    if ( $user_login == '' )
        $errors->add('empty_username', __('<strong>ERROR</strong>: Please enter a username.'));
    elseif ( !validate_username( $user_login ) ) {
        $errors->add('invalid_username', __('<strong>ERROR</strong>: This username is invalid.  Please enter a valid username.'));
        $user_login = '';
    } elseif ( username_exists( $user_login ) )
        $errors->add('username_exists', __('<strong>ERROR</strong>: This username is already registered, please choose another one.'));

    // Check the e-mail address
    if ($user_email == '') {
        $errors->add('empty_email', __('<strong>ERROR</strong>: Please type your e-mail address.'));
    } elseif ( !is_email( $user_email ) ) {
        $errors->add('invalid_email', __('<strong>ERROR</strong>: The email address isn&#8217;t correct.'));
        $user_email = '';
    } elseif ( email_exists( $user_email ) )
        $errors->add('email_exists', __('<strong>ERROR</strong>: This email is already registered, please choose another one.'));

    do_action('register_post', $user_login, $user_email, $errors);

    $errors = apply_filters( 'registration_errors', $errors );

    if ( $errors->get_error_code() )
        return $errors;

    $user_pass = wp_generate_password();
    $user_id = wp_create_user( $user_login, $user_pass, $user_email );
    if ( !$user_id ) {
        $errors->add('registerfail', sprintf(__('<strong>ERROR</strong>: Couldn&#8217;t register you... please contact the <a href="mailto:%s">webmaster</a> !'), get_option('admin_email')));
        return $errors;
    }

    wp_new_user_notification($user_id, $user_pass);

    return $user_id;
}

//
// Main
//

$action = isset($_REQUEST['action']) ? $_REQUEST['action'] : '';
$errors = new WP_Error();

if ( isset($_GET['key']) )
    $action = 'resetpass';

nocache_headers();

header('Content-Type: '.get_bloginfo('html_type').'; charset='.get_bloginfo('charset'));

if ( defined('RELOCATE') ) { // Move flag is set
    if ( isset( $_SERVER['PATH_INFO'] ) && ($_SERVER['PATH_INFO'] != $_SERVER['PHP_SELF']) )
        $_SERVER['PHP_SELF'] = str_replace( $_SERVER['PATH_INFO'], '', $_SERVER['PHP_SELF'] );

    $schema = ( isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) == 'on' ) ? 'https://' : 'http://';
    if ( dirname($schema . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF']) != get_option('siteurl') )
        update_option('siteurl', dirname($schema . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF']) );
}

//Set a cookie now to see if they are supported by the browser.
setcookie(TEST_COOKIE, 'WP Cookie check', 0, COOKIEPATH, COOKIE_DOMAIN);
if ( SITECOOKIEPATH != COOKIEPATH )
    setcookie(TEST_COOKIE, 'WP Cookie check', 0, SITECOOKIEPATH, COOKIE_DOMAIN);

$http_post = ('POST' == $_SERVER['REQUEST_METHOD']);
switch ($action) {

case 'logout' :

    wp_logout();

    $redirect_to = 'wp-login.php?loggedout=true';
    if ( isset( $_REQUEST['redirect_to'] ) )
        $redirect_to = $_REQUEST['redirect_to'];

    wp_safe_redirect($redirect_to);
    exit();

break;

case 'lostpassword' :
case 'retrievepassword' :
    if ( $http_post ) {
        $errors = retrieve_password();
        if ( !is_wp_error($errors) ) {
            wp_redirect('wp-login.php?checkemail=confirm');
            exit();
        }
    }

    if ( 'invalidkey' == $_GET['error'] ) $errors->add('invalidkey', __('Sorry, that key does not appear to be valid.'));

    do_action('lost_password');
    login_header(__('Lost Password'), '<p class="message">' . __('Please enter your username or e-mail address. You will receive a new password via e-mail.') . '</p>', $errors);
?>

<form name="lostpasswordform" id="lostpasswordform" action="wp-login.php?action=lostpassword" method="post">
    <p>
        <label><?php _e('Username or E-mail:') ?><br />
        <input type="text" name="user_login" id="user_login" class="input" value="<?php echo attribute_escape(stripslashes($_POST['user_login'])); ?>" size="20" tabindex="10" /></label>
    </p>
<?php do_action('lostpassword_form'); ?>
    <p class="submit"><input type="submit" name="wp-submit" id="wp-submit" value="<?php _e('Get New Password'); ?>" tabindex="100" /></p>
</form>

<p id="nav">
<?php if (get_option('users_can_register')) : ?>
<a href="<?php bloginfo('wpurl'); ?>/wp-login.php"><?php _e('Log in') ?></a> |
<a href="<?php bloginfo('wpurl'); ?>/wp-login.php?action=register"><?php _e('Register') ?></a>
<?php else : ?>
<a href="<?php bloginfo('wpurl'); ?>/wp-login.php"><?php _e('Log in') ?></a>
<?php endif; ?>
</p>

</div>

<p id="backtoblog"><a href="<?php bloginfo('url'); ?>/" title="<?php _e('Are you lost?') ?>"><?php printf(__('&laquo; Back to %s'), get_bloginfo('title', 'display' )); ?></a></p>

</body>
</html>
<?php
break;

case 'resetpass' :
case 'rp' :
    $errors = reset_password($_GET['key']);

    if ( ! is_wp_error($errors) ) {
        wp_redirect('wp-login.php?checkemail=newpass');
        exit();
    }

    wp_redirect('wp-login.php?action=lostpassword&error=invalidkey');
    exit();

break;

case 'register' :
    if ( !get_option('users_can_register') ) {
        wp_redirect('wp-login.php?registration=disabled');
        exit();
    }

    $user_login = '';
    $user_email = '';
    if ( $http_post ) {
        require_once( ABSPATH . WPINC . '/registration.php');

        $user_login = $_POST['user_login'];
        $user_email = $_POST['user_email'];
        $errors = register_new_user($user_login, $user_email);
        if ( !is_wp_error($errors) ) {
            wp_redirect('wp-login.php?checkemail=registered');
            exit();
        }
    }

    login_header(__('Registration Form'), '<p class="message register">' . __('Register For This Site') . '</p>', $errors);
?>

<form name="registerform" id="registerform" action="wp-login.php?action=register" method="post">
    <p>
        <label><?php _e('Username') ?><br />
        <input type="text" name="user_login" id="user_login" class="input" value="<?php echo attribute_escape(stripslashes($user_login)); ?>" size="20" tabindex="10" /></label>
    </p>
    <p>
        <label><?php _e('E-mail') ?><br />
        <input type="text" name="user_email" id="user_email" class="input" value="<?php echo attribute_escape(stripslashes($user_email)); ?>" size="25" tabindex="20" /></label>
    </p>
<?php do_action('register_form'); ?>
    <p id="reg_passmail"><?php _e('A password will be e-mailed to you.') ?></p>
    <p class="submit"><input type="submit" name="wp-submit" id="wp-submit" value="<?php _e('Register'); ?>" tabindex="100" /></p>
</form>

<p id="nav">
<a href="<?php bloginfo('wpurl'); ?>/wp-login.php"><?php _e('Log in') ?></a> |
<a href="<?php bloginfo('wpurl'); ?>/wp-login.php?action=lostpassword" title="<?php _e('Password Lost and Found') ?>"><?php _e('Lost your password?') ?></a>
</p>

</div>

<p id="backtoblog"><a href="<?php bloginfo('url'); ?>/" title="<?php _e('Are you lost?') ?>"><?php printf(__('&laquo; Back to %s'), get_bloginfo('title', 'display' )); ?></a></p>

</body>
</html>
<?php
break;

case 'login' :
default:
    if ( isset( $_REQUEST['redirect_to'] ) )
        $redirect_to = $_REQUEST['redirect_to'];
    else
        $redirect_to = 'wp-admin/';

    $user = wp_signon();

    if ( !is_wp_error($user) ) {
        // If the user can't edit posts, send them to their profile.
        if ( !$user->has_cap('edit_posts') && ( empty( $redirect_to ) || $redirect_to == 'wp-admin/' ) )
            $redirect_to = get_option('siteurl') . '/wp-admin/profile.php';
        wp_safe_redirect($redirect_to);
        exit();
    }

    $errors = $user;
    // Clear errors if loggedout is set.
    if ( !empty($_GET['loggedout']) )
        $errors = new WP_Error();

    // If cookies are disabled we can't log in even with a valid user+pass
    if ( isset($_POST['testcookie']) && empty($_COOKIE[TEST_COOKIE]) )
        $errors->add('test_cookie', __("<strong>ERROR</strong>: Cookies are blocked or not supported by your browser. You must <a href='http://www.google.com/cookies.html'>enable cookies</a> to use WordPress."));

    // Some parts of this script use the main login form to display a message
    if        ( isset($_GET['loggedout']) && TRUE == $_GET['loggedout'] )            $errors->add('loggedout', __('You are now logged out.'), 'message');
    elseif    ( isset($_GET['registration']) && 'disabled' == $_GET['registration'] )    $errors->add('registerdiabled', __('User registration is currently not allowed.'));
    elseif    ( isset($_GET['checkemail']) && 'confirm' == $_GET['checkemail'] )    $errors->add('confirm', __('Check your e-mail for the confirmation link.'), 'message');
    elseif    ( isset($_GET['checkemail']) && 'newpass' == $_GET['checkemail'] )    $errors->add('newpass', __('Check your e-mail for your new password.'), 'message');
    elseif    ( isset($_GET['checkemail']) && 'registered' == $_GET['checkemail'] )    $errors->add('registered', __('Registration complete. Please check your e-mail.'), 'message');

    login_header(__('Login'), '', $errors);
?>

<form name="loginform" id="loginform" action="wp-login.php" method="post">
<?php if ( !isset($_GET['checkemail']) || !in_array( $_GET['checkemail'], array('confirm', 'newpass') ) ) : ?>
    <p>
        <label><?php _e('Username') ?><br />
        <input type="text" name="log" id="user_login" class="input" value="<?php echo attribute_escape(stripslashes($user_login)); ?>" size="20" tabindex="10" /></label>
    </p>
    <p>
        <label><?php _e('Password') ?><br />
        <input type="password" name="pwd" id="user_pass" class="input" value="" size="20" tabindex="20" /></label>
    </p>
<?php do_action('login_form'); ?>
    <p class="forgetmenot"><label><input name="rememberme" type="checkbox" id="rememberme" value="forever" tabindex="90" /> <?php _e('Remember Me'); ?></label></p>
    <p class="submit">
        <input type="submit" name="wp-submit" id="wp-submit" value="<?php _e('Log In'); ?>" tabindex="100" />
        <input type="hidden" name="redirect_to" value="<?php echo attribute_escape($redirect_to); ?>" />
        <input type="hidden" name="testcookie" value="1" />
    </p>
<?php else : ?>
    <p>&nbsp;</p>
<?php endif; ?>
</form>

<p id="nav">
<?php if ( isset($_GET['checkemail']) && in_array( $_GET['checkemail'], array('confirm', 'newpass') ) ) : ?>
<?php elseif (get_option('users_can_register')) : ?>
<a href="<?php bloginfo('wpurl'); ?>/wp-login.php?action=register"><?php _e('Register') ?></a> |
<a href="<?php bloginfo('wpurl'); ?>/wp-login.php?action=lostpassword" title="<?php _e('Password Lost and Found') ?>"><?php _e('Lost your password?') ?></a>
<?php else : ?>
<a href="<?php bloginfo('wpurl'); ?>/wp-login.php?action=lostpassword" title="<?php _e('Password Lost and Found') ?>"><?php _e('Lost your password?') ?></a>
<?php endif; ?>
</p>

</div>

<p id="backtoblog"><a href="<?php bloginfo('url'); ?>/" title="<?php _e('Are you lost?') ?>"><?php printf(__('&laquo; Back to %s'), get_bloginfo('title', 'display' )); ?></a></p>

</body>
</html>
<?php

break;
} // end action switch
?>

y tu archivo pluggable.php por éste

Code:
<?php
/**
 * These functions can be replaced via plugins. They are loaded after
 * plugins are loaded.
 *
 * @package WordPress
 */

if ( !function_exists('set_current_user') ) :
/**
 * set_current_user() - Populates global user information for any user
 *
 * Set $id to null and specify a name if you do not know a user's ID
 *
 * @since 2.0.1
 * @see wp_set_current_user() An alias of wp_set_current_user()
 *
 * @param int|null $id User ID.
 * @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);
}
endif;

if ( !function_exists('wp_set_current_user') ) :
/**
 * wp_set_current_user() - Changes the current user by ID or name
 *
 * 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 2.0.4
 * @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;
}
endif;

if ( !function_exists('wp_get_current_user') ) :
/**
 * wp_get_current_user() - Retrieve the current user object
 *
 * @since 2.0.4
 *
 * @return WP_User Current user WP_User object
 */
function wp_get_current_user() {
    global $current_user;

    get_currentuserinfo();

    return $current_user;
}
endif;

if ( !function_exists('get_currentuserinfo') ) :
/**
 * 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.
 *
 * @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
 */
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() ) {
        wp_set_current_user(0);
        return false;
    }

    wp_set_current_user($user);
}
endif;

if ( !function_exists('get_userdata') ) :
/**
 * get_userdata() - Retrieve user info by user ID
 *
 * @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;
}
endif;

if ( !function_exists('update_user_cache') ) :
/**
 * update_user_cache() - Updates a users cache when overridden by a plugin
 *
 * Core function does nothing.
 *
 * @since 1.5
 *
 * @return bool Only returns true
 */
function update_user_cache() {
    return true;
}
endif;

if ( !function_exists('get_userdatabylogin') ) :
/**
 * get_userdatabylogin() - Retrieve user info by login name
 *
 * @since 0.71
 *
 * @param string $user_login User's username
 * @return bool|object False on failure, User DB row object
 */
function get_userdatabylogin($user_login) {
    global $wpdb;
    $user_login = sanitize_user( $user_login );

    if ( empty( $user_login ) )
        return false;

    $user_id = wp_cache_get($user_login, 'userlogins');

    $user = false;
    if ( false !== $user_id )
        $user = wp_cache_get($user_id, 'users');

    if ( false !== $user )
        return $user;

    if ( !$user = $wpdb->get_row($wpdb->prepare("SELECT * FROM $wpdb->users WHERE user_login = %s", $user_login)) )
        return false;

    _fill_user($user);

    return $user;
}
endif;

if ( !function_exists('get_user_by_email') ) :
/**
 * get_user_by_email() - Retrieve user info by email
 *
 * @since 2.5
 *
 * @param string $email User's email address
 * @return bool|object False on failure, User DB row object
 */
function get_user_by_email($email) {
    global $wpdb;

    $user_id = wp_cache_get($email, 'useremail');

    $user = false;
    if ( false !== $user_id )
        $user = wp_cache_get($user_id, 'users');

    if ( false !== $user )
        return $user;

    if ( !$user = $wpdb->get_row($wpdb->prepare("SELECT * FROM $wpdb->users WHERE user_email = %s", $email)) )
        return false;

    _fill_user($user);

    return $user;
}
endif;

if ( !function_exists( 'wp_mail' ) ) :
/**
 * wp_mail() - Function to 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.
 *
 * @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
 * @param string $message Message contents
 * @param string|array $headers Optional. Additional headers.
 * @return bool Whether the email contents were sent successfully.
 */
function wp_mail( $to, $subject, $message, $headers = '' ) {
    // Compact the input, apply the filters, and extract them back out
    extract( apply_filters( 'wp_mail', compact( 'to', 'subject', 'message', 'headers' ) ) );

    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();
    } elseif ( !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 );
        $headers = array();

        // If it's actually got contents
        if ( !empty( $tempheaders ) ) {
            // Iterate through the raw headers
            foreach ( $tempheaders as $header ) {
                if ( strpos($header, ':') === false )
                    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_name = trim( $content );
                    }
                } elseif ( 'content-type' == strtolower($name) ) {
                    if ( strpos( $content,';' ) !== false ) {
                        list( $type, $charset ) = explode( ';', $content );
                        $content_type = trim( $type );
                        $charset = trim( str_replace( array( 'charset=', '"' ), '', $charset ) );
                    } else {
                        $content_type = trim( $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
    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;
    }

    // Set the from name and email
    $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;

    // 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 );

    // Set whether it's plaintext or not, depending on $content_type
    if ( $content_type == 'text/html' ) {
        $phpmailer->IsHTML( true );
    } else {
        $phpmailer->IsHTML( false );
    }

    // 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 ( $headers as $name => $content ) {
            $phpmailer->AddCustomHeader( sprintf( '%1$s: %2$s', $name, $content ) );
        }
    }

    do_action_ref_array( 'phpmailer_init', array( &$phpmailer ) );

    // Send!
    $result = @$phpmailer->Send();

    return $result;
}
endif;

/**
 * wp_authenticate() - Checks a user's login information and logs them in if it checks out
 * @since 2.5
 *
 * @param string $username User's username
 * @param string $password User's password
 * @return WP_Error|WP_User WP_User object if login successful, otherwise WP_Error object.
 */
if ( !function_exists('wp_authenticate') ) :
function wp_authenticate($username, $password) {
    $username = sanitize_user($username);

    if ( '' == $username )
        return new WP_Error('empty_username', __('<strong>ERROR</strong>: The username field is empty.'));

    if ( '' == $password )
        return new WP_Error('empty_password', __('<strong>ERROR</strong>: The password field is empty.'));

    $user = get_userdatabylogin($username);

    if ( !$user || ($user->user_login != $username) ) {
        do_action( 'wp_login_failed', $username );
        return new WP_Error('invalid_username', __('<strong>ERROR</strong>: Invalid username.'));
    }

    $user = apply_filters('wp_authenticate_user', $user, $password);
    if ( is_wp_error($user) ) {
        do_action( 'wp_login_failed', $username );
        return $user;
    }

    if ( !wp_check_password($password, $user->user_pass, $user->ID) ) {
        do_action( 'wp_login_failed', $username );
        return new WP_Error('incorrect_password', __('<strong>ERROR</strong>: Incorrect password.'));
    }

    return new WP_User($user->ID);
}
endif;

/**
 * wp_logout() - Log the current user out
 * @since 2.5
 *
 */
if ( !function_exists('wp_logout') ) :
function wp_logout() {
    wp_clear_auth_cookie();
    do_action('wp_logout');
}
endif;

if ( !function_exists('wp_validate_auth_cookie') ) :
/**
 * 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).
 *
 * 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 $cookie Optional. If used, will validate contents instead of cookie's
 * @return bool|int False if invalid cookie, User ID if valid.
 */
function wp_validate_auth_cookie($cookie = '') {
    if ( empty($cookie) ) {
        if ( empty($_COOKIE[AUTH_COOKIE]) )
            return false;
        $cookie = $_COOKIE[AUTH_COOKIE];
    }

    $cookie_elements = explode('|', $cookie);
    if ( count($cookie_elements) != 3 )
        return false;

    list($username, $expiration, $hmac) = $cookie_elements;

    $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() )
        return false;

    $key = wp_hash($username . '|' . $expiration);
    $hash = hash_hmac('md5', $username . '|' . $expiration, $key);

    if ( $hmac != $hash )
        return false;

    $user = get_userdatabylogin($username);
    if ( ! $user )
        return false;

    return $user->ID;
}
endif;

if ( !function_exists('wp_generate_auth_cookie') ) :
/**
 * wp_generate_auth_cookie() - Generate authentication cookie contents
 *
 * @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 $expiration Cookie expiration in seconds
 * @return string Authentication cookie contents
 */
function wp_generate_auth_cookie($user_id, $expiration) {
    $user = get_userdata($user_id);

    $key = wp_hash($user->user_login . '|' . $expiration);
    $hash = hash_hmac('md5', $user->user_login . '|' . $expiration, $key);

    $cookie = $user->user_login . '|' . $expiration . '|' . $hash;

    return apply_filters('auth_cookie', $cookie, $user_id, $expiration);
}
endif;

if ( !function_exists('wp_set_auth_cookie') ) :
/**
 * wp_set_auth_cookie() - 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.
 *
 * @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) {
    if ( $remember ) {
        $expiration = $expire = time() + 1209600;
    } else {
        $expiration = time() + 172800;
        $expire = 0;
    }

    $cookie = wp_generate_auth_cookie($user_id, $expiration);

    do_action('set_auth_cookie', $cookie, $expire);

    setcookie(AUTH_COOKIE, $cookie, $expire, COOKIEPATH, COOKIE_DOMAIN);
    if ( COOKIEPATH != SITECOOKIEPATH )
        setcookie(AUTH_COOKIE, $cookie, $expire, SITECOOKIEPATH, COOKIE_DOMAIN);
}
endif;

if ( !function_exists('wp_clear_auth_cookie') ) :
/**
 * wp_clear_auth_cookie() - Deletes all of the cookies associated with authentication
 *
 * @since 2.5
 */
function wp_clear_auth_cookie() {
    setcookie(AUTH_COOKIE, ' ', time() - 31536000, COOKIEPATH, COOKIE_DOMAIN);
    setcookie(AUTH_COOKIE, ' ', time() - 31536000, SITECOOKIEPATH, COOKIE_DOMAIN);

    // Old 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);
}
endif;

if ( !function_exists('is_user_logged_in') ) :
/**
 * is_user_logged_in() - Checks if the current visitor is a logged in user
 *
 * @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;
}
endif;

if ( !function_exists('auth_redirect') ) :
/**
 * auth_redirect() - Checks if a user is logged in, if not it redirects them to the login page
 *
 * @since 1.5
 */
function auth_redirect() {
    // Checks if a user is logged in, if not redirects them to the login page
    if ( (!empty($_COOKIE[AUTH_COOKIE]) &&
                !wp_validate_auth_cookie($_COOKIE[AUTH_COOKIE])) ||
            (empty($_COOKIE[AUTH_COOKIE])) ) {
        nocache_headers();

        wp_redirect(get_option('siteurl') . '/wp-login.php?redirect_to=' . urlencode($_SERVER['REQUEST_URI']));
        exit();
    }
}
endif;

if ( !function_exists('check_admin_referer') ) :
/**
 * check_admin_referer() - Makes sure that a user was referred from another admin page, to avoid security exploits
 *
 * @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(get_option('siteurl')).'/wp-admin';
    $referer = strtolower(wp_get_referer());
    $result = wp_verify_nonce($_REQUEST[$query_arg], $action);
    if ( !$result && !(-1 == $action && strpos($referer, $adminurl) !== false) ) {
        wp_nonce_ays($action);
        die();
    }
    do_action('check_admin_referer', $action, $result);
    return $result;
}endif;

if ( !function_exists('check_ajax_referer') ) :
/**
 * check_ajax_referer() - Verifies the AJAX request to prevent processing requests external of the blog.
 *
 * @since 2.0.4
 *
 * @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;
}
endif;

if ( !function_exists('wp_redirect') ) :
/**
 * wp_redirect() - Redirects to another page, with a workaround for the IIS Set-Cookie bug
 *
 * @link http://support.microsoft.com/kb/q176113/
 * @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");
    }
}
endif;

if ( !function_exists('wp_sanitize_redirect') ) :
/**
 * wp_sanitize_redirect() - Sanitizes a URL for use in a 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) {
        $found = false;
        foreach($strip as $val) {
            while(strpos($location, $val) !== false) {
                $found = true;
                $location = str_replace($val, '', $location);
            }
        }
    }
    return $location;
}
endif;

if ( !function_exists('wp_safe_redirect') ) :
/**
 * wp_safe_redirect() - 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.
 *
 * @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;

    $lp  = parse_url($location);
    $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 = get_option('siteurl') . '/wp-admin/';

    wp_redirect($location, $status);
}
endif;

if ( ! function_exists('wp_notify_postauthor') ) :
/**
 * wp_notify_postauthor() - Notify an author of a comment/trackback/pingback to one of their posts
 *
 * @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 );

    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";
    $notify_message .= sprintf( __('Delete it: %s'), get_option('siteurl')."/wp-admin/comment.php?action=cdc&c=$comment_id" ) . "\r\n";
    $notify_message .= sprintf( __('Spam it: %s'), get_option('siteurl')."/wp-admin/comment.php?action=cdc&dt=spam&c=$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;
}
endif;

if ( !function_exists('wp_notify_moderator') ) :
/**
 * wp_notify_moderator() - Notifies the moderator of the blog about a new comment that is awaiting approval
 *
 * @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;
    }

    $notify_message .= sprintf( __('Approve it: %s'),  get_option('siteurl')."/wp-admin/comment.php?action=mac&c=$comment_id" ) . "\r\n";
    $notify_message .= sprintf( __('Delete it: %s'), get_option('siteurl')."/wp-admin/comment.php?action=cdc&c=$comment_id" ) . "\r\n";
    $notify_message .= sprintf( __('Spam it: %s'), get_option('siteurl')."/wp-admin/comment.php?action=cdc&dt=spam&c=$comment_id" ) . "\r\n";

    $strCommentsPending = sprintf( __ngettext('%s comment', '%s comments', $comments_waiting), $comments_waiting );
    $notify_message .= sprintf( __('Currently %s are waiting for approval. Please visit the moderation panel:'), $strCommentsPending ) . "\r\n";
    $notify_message .= get_option('siteurl') . "/wp-admin/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;
}
endif;

if ( !function_exists('wp_new_user_notification') ) :
/**
 * wp_new_user_notification() - Notify the blog admin of a new user, normally via email
 *
 * @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 .= get_option('siteurl') . "/wp-login.php\r\n";

    wp_mail($user_email, sprintf(__('[%s] Your username and password'), get_option('blogname')), $message);

}
endif;

if ( !function_exists('wp_nonce_tick') ) :
/**
 * 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.
 *
 * @since 2.5
 *
 * @return int
 */
function wp_nonce_tick() {
    $nonce_life = apply_filters('nonce_life', 86400);

    return ceil(time() / ( $nonce_life / 2 ));
}
endif;

if ( !function_exists('wp_verify_nonce') ) :
/**
 * wp_verify_nonce() - 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.
 *
 * @since 2.0.4
 *
 * @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), -12, 10) == $nonce )
        return 1;
    // Nonce generated 12-24 hours ago
    if ( substr(wp_hash(($i - 1) . $action . $uid), -12, 10) == $nonce )
        return 2;
    // Invalid nonce
    return false;
}
endif;

if ( !function_exists('wp_create_nonce') ) :
/**
 * wp_create_nonce() - Creates a random, one time use token
 *
 * @since 2.0.4
 *
 * @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), -12, 10);
}
endif;

if ( !function_exists('wp_salt') ) :
/**
 * wp_salt() - Get salt to add to hashes to help prevent attacks
 *
 * You can set the salt by defining two areas. One is in the database and
 * the other is in your wp-config.php file. The database location is defined
 * in the option named 'secret', but most likely will not need to be changed.
 *
 * The second, located in wp-config.php, is a constant named 'SECRET_KEY', but
 * is not required. If the constant is not defined then the database constants
 * will be used, since they are most likely given to be unique. However, given
 * that the salt will be added to the password and can be seen, the constant
 * is recommended to be set manually.
 *
 * <code>
 * define('SECRET_KEY', 'mAry1HadA15|\/|b17w55w1t3asSn09w');
 * </code>
 *
 * Attention: Do not use above example!
 *
 * 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.
 *
 * Salting only helps if the string is not predictable and should be
 * made up of various characters. Think of the salt as a password for
 * securing your passwords, but common among all of your passwords.
 * Therefore the salt should be as long as possible as as difficult as
 * possible, because you will not have to remember it.
 *
 * @since 2.5
 *
 * @return string Salt value from either 'SECRET_KEY' or 'secret' option
 */
function wp_salt() {
    global $wp_default_secret_key;
    $secret_key = '';
    if ( defined('SECRET_KEY') && ('' != SECRET_KEY) && ( $wp_default_secret_key != SECRET_KEY) )
        $secret_key = SECRET_KEY;

    if ( defined('SECRET_SALT') ) {
        $salt = SECRET_SALT;
    } else {
        $salt = get_option('secret');
        if ( empty($salt) ) {
            $salt = wp_generate_password();
            update_option('secret', $salt);
        }
    }

    return apply_filters('salt', $secret_key . $salt);
}
endif;

if ( !function_exists('wp_hash') ) :
/**
 * wp_hash() - Get hash of given string
 *
 * @since 2.0.4
 * @uses wp_salt() Get WordPress salt
 *
 * @param string $data Plain text to hash
 * @return string Hash of $data
 */
function wp_hash($data) {
    $salt = wp_salt();

    return hash_hmac('md5', $data, $salt);
}
endif;

if ( !function_exists('wp_hash_password') ) :
/**
 * wp_hash_password() - Create a hash (encrypt) of a plain text password
 *
 * For integration with other applications, this function can be
 * overwritten to instead use the other package password checking
 * algorithm.
 *
 * @since 2.5
 * @global object $wp_hasher PHPass object
 * @uses PasswordHash::HashPassword
 *
 * @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);
}
endif;

if ( !function_exists('wp_check_password') ) :
/**
 * wp_check_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.
 *
 * @since 2.5
 * @global object $wp_hasher PHPass object used for checking the password
 *    against the $hash + $password
 * @uses PasswordHash::CheckPassword
 *
 * @param string $password Plaintext user's password
 * @param string $hash Hash of the user's password to check against.
 * @return bool False, if the $password does not match the hashed password
 */
function wp_check_password($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);
}
endif;

if ( !function_exists('wp_generate_password') ) :
/**
 * wp_generate_password() - Generates a random password drawn from the defined set of characters
 *
 * @since 2.5
 *
 * @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, mt_rand(0, strlen($chars) - 1), 1);
    return $password;
}
endif;

if ( !function_exists('wp_set_password') ) :
/**
 * wp_set_password() - Updates the user's password with a new encrypted one
 *
 * For integration with other applications, this function can be
 * overwritten to instead use the other package password checking
 * algorithm.
 *
 * @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
 *
 * @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);
    $query = $wpdb->prepare("UPDATE $wpdb->users SET user_pass = %s, user_activation_key = '' WHERE ID = %d", $hash, $user_id);
    $wpdb->query($query);
    wp_cache_delete($user_id, 'users');
}
endif;

if ( !function_exists( 'get_avatar' ) ) :
/**
 * get_avatar() - Get avatar for a user
 *
 * Retrieve the avatar for a user provided a user ID or email address
 *
 * @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
 * @param string $default URL to a default image to use if no avatar is available
 * @return string <img> tag for the user's avatar
*/
function get_avatar( $id_or_email, $size = '96', $default = '' ) {
    if ( ! get_option('show_avatars') )
        return false;

    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 ( !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) )
        $default = "http://www.gravatar.com/avatar/ad516503a11cd5ca435acc9bb6523536?s=$size"; // ad516503a11cd5ca435acc9bb6523536 == md5('unknown@gravatar.com')

    if ( !empty($email) ) {
        $out = 'http://www.gravatar.com/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}";

        $avatar = "<img alt='' src='{$out}' class='avatar avatar-{$size}' height='{$size}' width='{$size}' />";
    } else {
        $avatar = "<img alt='' src='{$default}' class='avatar avatar-{$size} avatar-default' height='{$size}' width='{$size}' />";
    }

    return apply_filters('get_avatar', $avatar, $id_or_email, $size, $default);
}
endif;

if ( !function_exists('wp_setcookie') ) :
/**
 * wp_setcookie() - Sets a cookie for a user who just logged in
 *
 * @since 1.5
 * @deprecated Use wp_set_auth_cookie()
 * @see wp_set_auth_cookie()
 *
 * @param string  $username The user's username
 * @param string  $password Optional. The user's password
 * @param bool $already_md5 Optional. Whether the password has already been through MD5
 * @param string $home Optional. Will be used instead of COOKIEPATH if set
 * @param string $siteurl Optional. Will be used instead of SITECOOKIEPATH if set
 * @param bool $remember Optional. Remember that the user is logged in
 */
function wp_setcookie($username, $password = '', $already_md5 = false, $home = '', $siteurl = '', $remember = false) {
    _deprecated_function( __FUNCTION__, '2.5', 'wp_set_auth_cookie()' );
    $user = get_userdatabylogin($username);
    wp_set_auth_cookie($user->ID, $remember);
}
endif;

if ( !function_exists('wp_clearcookie') ) :
/**
 * wp_clearcookie() - Clears the authentication cookie, logging the user out
 *
 * @since 1.5
 * @deprecated Use wp_clear_auth_cookie()
 * @see wp_clear_auth_cookie()
 */
function wp_clearcookie() {
    _deprecated_function( __FUNCTION__, '2.5', 'wp_clear_auth_cookie()' );
    wp_clear_auth_cookie();
}
endif;

if ( !function_exists('wp_get_cookie_login') ):
/**
 * wp_get_cookie_login() - Gets the user cookie login
 *
 * This function is deprecated and should no longer be extended as it won't
 * be used anywhere in WordPress. Also, plugins shouldn't use it either.
 *
 * @since 2.0.4
 * @deprecated No alternative
 *
 * @return bool Always returns false
 */
function wp_get_cookie_login() {
    _deprecated_function( __FUNCTION__, '2.5', '' );
    return false;
}
endif;

if ( !function_exists('wp_login') ) :
/**
 * wp_login() - Checks a users login information and logs them in if it checks out
 *
 * Use the global $error to get the reason why the login failed.
 * If the username is blank, no error will be set, so assume
 * blank username on that case.
 *
 * Plugins extending this function should also provide the global
 * $error and set what the error is, so that those checking the
 * global for why there was a failure can utilize it later.
 *
 * @since 1.2.2
 * @deprecated Use wp_signon()
 * @global string $error Error when false is returned
 *
 * @param string $username User's username
 * @param string $password User's password
 * @param bool $deprecated Not used
 * @return bool False on login failure, true on successful check
 */
function wp_login($username, $password, $deprecated = '') {
    global $error;

    $user = wp_authenticate($username, $password);

    if ( ! is_wp_error($user) )
        return true;

    $error = $user->get_error_message();
    return false;
}
endif;

?>

Si nada de eso va, tal vez sea cosa del .htaccess (mira los permisos y la configuración). Mira también este hilo: http://w.ordpress.com/soporte/post/2293/#p2293

Espero que algo de esto te sirva wink