<?php
/*
Plugin Name: Remote Growl
Plugin URI: http://selfdestruct.net/
Description: Send a Remote Growl notification on certain events
Version: 0.2alpha
Author: Toni Viemero
Author URI: http://selfdestruct.net/
*/

function md5_base64($data) {
    return preg_replace('/=+$/','',base64_encode(pack('H*',md5($data))));
} 

function remotegrowl_connect($addr, $port, $timeout = 5) {
    if (is_resource($sock)) {
        @socket_close($sock);
        $sock = null;
    }

    if (!$addr || !$port) {
        die('Remote IP address or host name not specified');
    } elseif (preg_match('/^d+.d+.d+.d+/', $addr)) {
        $addr = $addr;
    } else {
        $addr = @gethostbyname($addr);
    }

    $port    = $port % 65536;
    $timeout = $timeout;

    $sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
    socket_set_option($sock, SOL_SOCKET, SO_RCVTIMEO, array("sec" => $timeout, "usec" => 0));
    socket_set_option($sock, SOL_SOCKET, SO_SNDTIMEO, array("sec" => $timeout, "usec" => 0));
    socket_connect($sock, $addr, $port);

    if (!$sock) {
        die('Unable to connect socket: '. socket_strerror(socket_last_error()));
    }

    return $sock;
}

function remotegrowl_disconnect($sock) {
    if (is_resource($sock)) {
        @socket_close($sock);
        $sock = null;
    }
}

function remotegrowl_write($type, $header, $message) {

    $addr        = get_option('remotegrowl_addr');
    $port        = get_option('remotegrowl_port');
    $password    = get_option('remotegrowl_password');
    $application = get_option('remotegrowl_application');

    $sock = remotegrowl_connect($addr, $port);

    if (!is_resource($sock)) {
        die('Socket not connected');
    }

    $regmsg  = 'register|'. $application .'|'. $type;
    $regmsg .= '$'. md5_base64($regmsg . $password);

    socket_write($sock, $regmsg);

    $datagram = 'notify|'. $application .'|'. $type .'|'. $header .'|'. $message;

    $checksum = '$' . md5_base64($datagram . $password);
    socket_write($sock, $datagram . $checksum);

    remotegrowl_disconnect($sock);

}

function remotegrowl_action_comment_post($comment_id) {
    global $wpdb;

    $post_title = $wpdb->get_var('SELECT p.post_title FROM '. $wpdb->comments .' c, '. $wpdb->posts .' p WHERE c.comment_ID = '. $comment_id .' AND c.comment_post_ID = p.ID');

    $type    = 'notify';
    $header  = __('New comment posted');
    $message = 'New comment posted to "'. $post_title .'"';
    remotegrowl_write($type, $header, $message);
}

function remotegrowl_action_publish_post($post_id) {
    global $wpdb;

    $post_title = $wpdb->get_var('SELECT post_title FROM '. $wpdb->posts .' WHERE ID = '. $post_id);

    $type   = 'notify';
    $header = __('New blog entry');
    $message = 'New blog entry "'. $post_title .'"';
    remotegrowl_write($type, $header, $message);
}

function remotegrowl_action_user_register($user_id) {
    global $wpdb;

    $user_login = $wpdb->get_var('SELECT user_login FROM '. $wpdb->users .' WHERE ID = '. $user_id);

    $type   = 'notify';
    $header = __('New user registered');
    $message = 'New user "'. $user_login .'" registered';
    remotegrowl_write($type, $header, $message);
}

function remotegrowl_action_wp_login($user_login) {
    $type   = 'notify';
    $header = __('User logged in');
    $message = 'User "'. $user_login .'" logged in';
    remotegrowl_write($type, $header, $message);
}

function remotegrowl_action_search($string) {
    $type   = 'notify';
    $header = __('New search query');
    $message = 'Someone just searched for "'. $string .'"';
    remotegrowl_write($type, $header, $message);
}

function add_remotegrowl_option_page() {
    if (function_exists('add_submenu_page')) {
        add_submenu_page('plugins.php', 'Remote Growl Options Page', 'Remote Growl', 8, basename(__FILE__), 'remotegrowl_options_page');
    }
}

function remotegrowl_options_page() {
    if (isset($_POST['update'])) {
        $options = array('remotegrowl_addr',
                         'remotegrowl_port',
                         'remotegrowl_password',
                         'remotegrowl_application'
                        );

        foreach ($options as $option) {
            $value = trim($_POST[$option]);
            update_option($option, $value);
        }

        echo "<div class='updated'><p><strong>Remote Growl options updated</strong></p></div>";
    }
    if (!function_exists('socket_create')) { ?>
        <div class='error'><p><strong>Your PHP does not support sockets</strong></p></div>
    <?php
    } else {
    ?>
        <form method="post" action="plugins.php?page=remotegrowl.php">
        <div class="wrap">
            <h2>Remote Growl Options</h2>
            <fieldset class='options'>
                <legend>Remote Growl Options</legend>
                <table class="editform" cellspacing="2" cellpadding="5" width="100%">
                    <tr>
                        <th valign="top" style="padding-top: 10px;">
                            <label for="remotegrowl_addr">Remote Growl IP or host:</label>
                        </th>
                        <td>
                            <?php
                            echo "<input type='text' size='50' ";
                            echo "name='remotegrowl_addr' ";
                            echo "id='remotegrowl_addr' ";
                            echo "value='".get_option(remotegrowl_addr)."' />\n";
                            ?>
                            <p style="margin: 5px 10px;">For example <em>127.0.0.1</em> or <em>localhost</em></p>
                        </td>
                    </tr>
                    <tr>
                        <th valign="top" style="padding-top: 10px;">
                            <label for="remotegrowl_port>">Remote Growl port:</label>
                        </th>
                        <td>
                            <?php
                            echo "<input type='text' size='50' ";
                            echo "name='remotegrowl_port' ";
                            echo "id='remotegrowl_port' ";
                            echo "value='".get_option(remotegrowl_port)."' />\n";
                            ?>
                            <p style="margin: 5px 10px;">For example <em>9955</em></p>
                        </td>
                    </tr>
                    <tr>
                        <th valign="top" style="padding-top: 10px;">
                            <label for="remotegrowl_password">Remote Growl password:</label>
                        </th>
                        <td>
                            <?php
                            echo "<input type='text' size='50' ";
                            echo "name='remotegrowl_password' ";
                            echo "id='remotegrowl_password' ";
                            echo "value='".get_option(remotegrowl_password)."' />\n";
                            ?>
                            <p style="margin: 5px 10px;">For example <em>test</em></p>
                        </td>
                    </tr>
                    <tr>
                        <th valign="top" style="padding-top: 10px;">
                            <label for="remotegrowl_application">Application name:</label>
                        </th>
                        <td>
                            <?php
                            echo "<input type='text' size='50' ";
                            echo "name='remotegrowl_application' ";
                            echo "id='remotegrowl_application' ";
                            echo "value='".get_option(remotegrowl_application)."' />\n";
                            ?>
                            <p style="margin: 5px 10px;">For example <em>WordPress</em></p>
                        </td>
                    </tr>
                    <tr>
                        <td colspan="2" class="submit">
                            <input type='submit' name='update' value='Update Options' />
                        </td>
                    </tr>
                </table>
            </fieldset>
        </div>
        </form>
    <?php
    }
}

add_action('admin_menu', 'add_remotegrowl_option_page');

add_action('comment_post', 'remotegrowl_action_comment_post');
add_action('publish_post', 'remotegrowl_action_publish_post');
add_action('user_register', 'remotegrowl_action_user_register');
add_action('wp_login', 'remotegrowl_action_wp_login');

if (isset($_GET['s'])) {
    remotegrowl_action_search($_GET['s']);
}