Cricao de Sites - 650 Layouts Prontos/WebMasters.iso/Blogs/wordpress2.6.exe/wordpress2.6/wp-app.php

PHP Script | 2008-07-22 | 33.3 KB | 1,186 lines

<?php
/**
 * Atom Publishing Protocol support for WordPress
 *
 * @author Original by Elias Torres <http://torrez.us/archives/2006/08/31/491/>
 * @author Modified by Dougal Campbell <http://dougal.gunters.org/>
 * @version 1.0.5-dc
 */

/**
 * WordPress is handling an Atom Publishing Protocol request.
 *
 * @var bool
 */
define('APP_REQUEST', true);

/** Set up WordPress environment */
require_once('./wp-load.php');

/** Post Template API */
require_once(ABSPATH . WPINC . '/post-template.php');

/** Atom Publishing Protocol Class */
require_once(ABSPATH . WPINC . '/atomlib.php');

/** Feed Handling API */
require_once(ABSPATH . WPINC . '/feed.php');

$_SERVER['PATH_INFO'] = preg_replace( '/.*\/wp-app\.php/', '', $_SERVER['REQUEST_URI'] );

/**
 * Whether to enable Atom Publishing Protocol Logging.
 *
 * @name app_logging
 * @var int|bool
 */
$app_logging = 0;

/**
 * Whether to always authenticate user. Permanently set to true.
 *
 * @name always_authenticate
 * @var int|bool
 * @todo Should be an option somewhere
 */
$always_authenticate = 1;

/**
 * log_app() - Writes logging info to a file.
 *
 * @uses $app_logging
 * @package WordPress
 * @subpackage Logging
 *
 * @param string $label Type of logging
 * @param string $msg Information describing logging reason.
 */
function log_app($label,$msg) {
    global $app_logging;
    if ($app_logging) {
        $fp = fopen( 'wp-app.log', 'a+');
        $date = gmdate( 'Y-m-d H:i:s' );
        fwrite($fp, "\n\n$date - $label\n$msg\n");
        fclose($fp);
    }
}

if ( !function_exists('wp_set_current_user') ) :
/**
 * wp_set_current_user() - Sets the current WordPress User
 *
 * Pluggable function which is also found in pluggable.php.
 *
 * @see wp-includes/pluggable.php Documentation for this function.
 * @uses $current_user Global of current user to test whether $id is the same.
 *
 * @param int $id The user's ID
 * @param string $name Optional. The username of the user.
 * @return WP_User Current user's User object
 */
function wp_set_current_user($id, $name = '') {
    global $current_user;

    if ( isset($current_user) && ($id == $current_user->ID) )
        return $current_user;

    $current_user = new WP_User($id, $name);

    return $current_user;
}
endif;

/**
 * wa_posts_where_include_drafts_filter() - Filter to add more post statuses
 *
 * @param string $where SQL statement to filter
 * @return string Filtered SQL statement with added post_status for where clause
 */
function wa_posts_where_include_drafts_filter($where) {
    $where = str_replace("post_status = 'publish'","post_status = 'publish' OR post_status = 'future' OR post_status = 'draft' OR post_status = 'inherit'", $where);
    return $where;

}
add_filter('posts_where', 'wa_posts_where_include_drafts_filter');

/**
 * @internal
 * Left undocumented to work on later. If you want to finish, then please do so.
 *
 * @package WordPress
 * @subpackage Publishing
 */
class AtomServer {

    var $ATOM_CONTENT_TYPE = 'application/atom+xml';
    var $CATEGORIES_CONTENT_TYPE = 'application/atomcat+xml';
    var $SERVICE_CONTENT_TYPE = 'application/atomsvc+xml';

    var $ATOM_NS = 'http://www.w3.org/2005/Atom';
    var $ATOMPUB_NS = 'http://www.w3.org/2007/app';

    var $ENTRIES_PATH = "posts";
    var $CATEGORIES_PATH = "categories";
    var $MEDIA_PATH = "attachments";
    var $ENTRY_PATH = "post";
    var $SERVICE_PATH = "service";
    var $MEDIA_SINGLE_PATH = "attachment";

    var $params = array();
    var $media_content_types = array('image/*','audio/*','video/*');
    var $atom_content_types = array('application/atom+xml');

    var $selectors = array();

    // support for head
    var $do_output = true;

    function AtomServer() {

        $this->script_name = array_pop(explode('/',$_SERVER['SCRIPT_NAME']));
        $this->app_base = get_bloginfo('url') . '/' . $this->script_name . '/';
        if ( isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) == 'on' ) {
            $this->app_base = preg_replace( '/^http:\/\//', 'https://', $this->app_base );
        }

        $this->selectors = array(
            '@/service$@' =>
                array('GET' => 'get_service'),
            '@/categories$@' =>
                array('GET' => 'get_categories_xml'),
            '@/post/(\d+)$@' =>
                array('GET' => 'get_post',
                        'PUT' => 'put_post',
                        'DELETE' => 'delete_post'),
            '@/posts/?(\d+)?$@' =>
                array('GET' => 'get_posts',
                        'POST' => 'create_post'),
            '@/attachments/?(\d+)?$@' =>
                array('GET' => 'get_attachment',
                        'POST' => 'create_attachment'),
            '@/attachment/file/(\d+)$@' =>
                array('GET' => 'get_file',
                        'PUT' => 'put_file',
                        'DELETE' => 'delete_file'),
            '@/attachment/(\d+)$@' =>
                array('GET' => 'get_attachment',
                        'PUT' => 'put_attachment',
                        'DELETE' => 'delete_attachment'),
        );
    }

    function handle_request() {
        global $always_authenticate;

        if( !empty( $_SERVER['ORIG_PATH_INFO'] ) )
            $path = $_SERVER['ORIG_PATH_INFO'];
        else
            $path = $_SERVER['PATH_INFO'];

        $method = $_SERVER['REQUEST_METHOD'];

        log_app('REQUEST',"$method $path\n================");

        $this->process_conditionals();
        //$this->process_conditionals();

        // exception case for HEAD (treat exactly as GET, but don't output)
        if($method == 'HEAD') {
            $this->do_output = false;
            $method = 'GET';
        }

        // redirect to /service in case no path is found.
        if(strlen($path) == 0 || $path == '/') {
            $this->redirect($this->get_service_url());
        }

        // check to see if AtomPub is enabled
        if( !get_option( 'enable_app' ) )
            $this->forbidden( sprintf( __( 'AtomPub services are disabled on this blog.  An admin user can enable them at %s' ), admin_url('options-writing.php') ) );

        // dispatch
        foreach($this->selectors as $regex => $funcs) {
            if(preg_match($regex, $path, $matches)) {
            if(isset($funcs[$method])) {

                // authenticate regardless of the operation and set the current
                // user. each handler will decide if auth is required or not.
                if(!$this->authenticate()) {
                    if ($always_authenticate) {
                        $this->auth_required('Credentials required.');
                    }
                }

                array_shift($matches);
                call_user_func_array(array(&$this,$funcs[$method]), $matches);
                exit();
            } else {
                // only allow what we have handlers for...
                $this->not_allowed(array_keys($funcs));
            }
            }
        }

        // oops, nothing found
        $this->not_found();
    }

    function get_service() {
        log_app('function','get_service()');

        if( !current_user_can( 'edit_posts' ) )
            $this->auth_required( __( 'Sorry, you do not have the right to access this blog.' ) );

        $entries_url = attribute_escape($this->get_entries_url());
        $categories_url = attribute_escape($this->get_categories_url());
        $media_url = attribute_escape($this->get_attachments_url());
        foreach ($this->media_content_types as $med) {
            $accepted_media_types = $accepted_media_types . "<accept>" . $med . "</accept>";
        }
        $atom_prefix="atom";
        $atom_blogname=get_bloginfo('name');
        $service_doc = <<<EOD
<service xmlns="$this->ATOMPUB_NS" xmlns:$atom_prefix="$this->ATOM_NS">
  <workspace>
    <$atom_prefix:title>$atom_blogname Workspace</$atom_prefix:title>
    <collection href="$entries_url">
      <$atom_prefix:title>$atom_blogname Posts</$atom_prefix:title>
      <accept>$this->ATOM_CONTENT_TYPE;type=entry</accept>
      <categories href="$categories_url" />
    </collection>
    <collection href="$media_url">
      <$atom_prefix:title>$atom_blogname Media</$atom_prefix:title>
      $accepted_media_types
    </collection>
  </workspace>
</service>

EOD;

        $this->output($service_doc, $this->SERVICE_CONTENT_TYPE);
    }

    function get_categories_xml() {
        log_app('function','get_categories_xml()');

        if( !current_user_can( 'edit_posts' ) )
            $this->auth_required( __( 'Sorry, you do not have the right to access this blog.' ) );

        $home = attribute_escape(get_bloginfo_rss('home'));

        $categories = "";
        $cats = get_categories("hierarchical=0&hide_empty=0");
        foreach ((array) $cats as $cat) {
            $categories .= "    <category term=\"" . attribute_escape($cat->name) .  "\" />\n";
}
        $output = <<<EOD
<app:categories xmlns:app="$this->ATOMPUB_NS"
    xmlns="$this->ATOM_NS"
    fixed="yes" scheme="$home">
    $categories
</app:categories>
EOD;
    $this->output($output, $this->CATEGORIES_CONTENT_TYPE);
}

    /*
     * Create Post (No arguments)
     */
    function create_post() {
        global $blog_id, $user_ID;
        $this->get_accepted_content_type($this->atom_content_types);

        $parser = new AtomParser();
        if(!$parser->parse()) {
            $this->client_error();
        }

        $entry = array_pop($parser->feed->entries);

        log_app('Received entry:', print_r($entry,true));

        $catnames = array();
        foreach($entry->categories as $cat)
            array_push($catnames, $cat["term"]);

        $wp_cats = get_categories(array('hide_empty' => false));

        $post_category = array();

        foreach($wp_cats as $cat) {
            if(in_array($cat->name, $catnames))
                array_push($post_category, $cat->term_id);
        }

        $publish = (isset($entry->draft) && trim($entry->draft) == 'yes') ? false : true;

        $cap = ($publish) ? 'publish_posts' : 'edit_posts';

        if(!current_user_can($cap))
            $this->auth_required(__('Sorry, you do not have the right to edit/publish new posts.'));

        $blog_ID = (int ) $blog_id;
        $post_status = ($publish) ? 'publish' : 'draft';
        $post_author = (int) $user_ID;
        $post_title = $entry->title[1];
        $post_content = $entry->content[1];
        $post_excerpt = $entry->summary[1];
        $pubtimes = $this->get_publish_time($entry->published);
        $post_date = $pubtimes[0];
        $post_date_gmt = $pubtimes[1];

        if ( isset( $_SERVER['HTTP_SLUG'] ) )
            $post_name = $_SERVER['HTTP_SLUG'];

        $post_data = compact('blog_ID', 'post_author', 'post_date', 'post_date_gmt', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_name');

        $this->escape($post_data);
        log_app('Inserting Post. Data:', print_r($post_data,true));

        $postID = wp_insert_post($post_data);
        if ( is_wp_error( $postID ) )
            $this->internal_error($postID->get_error_message());

        if (!$postID)
            $this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));

        // getting warning here about unable to set headers
        // because something in the cache is printing to the buffer
        // could we clean up wp_set_post_categories or cache to not print
        // this could affect our ability to send back the right headers
        @wp_set_post_categories($postID, $post_category);

        $output = $this->get_entry($postID);

        log_app('function',"create_post($postID)");
        $this->created($postID, $output);
    }

    function get_post($postID) {
        global $entry;

        if( !current_user_can( 'edit_post', $postID ) )
            $this->auth_required( __( 'Sorry, you do not have the right to access this post.' ) );

        $this->set_current_entry($postID);
        $output = $this->get_entry($postID);
        log_app('function',"get_post($postID)");
        $this->output($output);

    }

    function put_post($postID) {
        // checked for valid content-types (atom+xml)
        // quick check and exit
        $this->get_accepted_content_type($this->atom_content_types);

        $parser = new AtomParser();
        if(!$parser->parse()) {
            $this->bad_request();
        }

        $parsed = array_pop($parser->feed->entries);

        log_app('Received UPDATED entry:', print_r($parsed,true));

        // check for not found
        global $entry;
        $this->set_current_entry($postID);

        if(!current_user_can('edit_post', $entry['ID']))
            $this->auth_required(__('Sorry, you do not have the right to edit this post.'));

        $publish = (isset($parsed->draft) && trim($parsed->draft) == 'yes') ? false : true;
        $post_status = ($publish) ? 'publish' : 'draft';

        extract($entry);

        $post_title = $parsed->title[1];
        $post_content = $parsed->content[1];
        $post_excerpt = $parsed->summary[1];
        $pubtimes = $this->get_publish_time($entry->published);
        $post_date = $pubtimes[0];
        $post_date_gmt = $pubtimes[1];
        $pubtimes = $this->get_publish_time($parsed->updated);
        $post_modified = $pubtimes[0];
        $post_modified_gmt = $pubtimes[1];

        $postdata = compact('ID', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt');
        $this->escape($postdata);

        $result = wp_update_post($postdata);

        if (!$result) {
            $this->internal_error(__('For some strange yet very annoying reason, this post could not be edited.'));
        }

        log_app('function',"put_post($postID)");
        $this->ok();
    }

    function delete_post($postID) {

        // check for not found
        global $entry;
        $this->set_current_entry($postID);

        if(!current_user_can('edit_post', $postID)) {
            $this->auth_required(__('Sorry, you do not have the right to delete this post.'));
        }

        if ($entry['post_type'] == 'attachment') {
            $this->delete_attachment($postID);
        } else {
            $result = wp_delete_post($postID);

            if (!$result) {
                $this->internal_error(__('For some strange yet very annoying reason, this post could not be deleted.'));
            }

            log_app('function',"delete_post($postID)");
            $this->ok();
        }

    }

    function get_attachment($postID = NULL) {
        if( !current_user_can( 'upload_files' ) )
            $this->auth_required( __( 'Sorry, you do not have permission to upload files.' ) );

        if (!isset($postID)) {
            $this->get_attachments();
        } else {
            $this->set_current_entry($postID);
            $output = $this->get_entry($postID, 'attachment');
            log_app('function',"get_attachment($postID)");
            $this->output($output);
        }
    }

    function create_attachment() {

        $type = $this->get_accepted_content_type();

        if(!current_user_can('upload_files'))
            $this->auth_required(__('You do not have permission to upload files.'));

        $fp = fopen("php://input", "rb");
        $bits = NULL;
        while(!feof($fp)) {
            $bits .= fread($fp, 4096);
        }
        fclose($fp);

        $slug = '';
        if ( isset( $_SERVER['HTTP_SLUG'] ) )
            $slug = sanitize_file_name( $_SERVER['HTTP_SLUG'] );
        elseif ( isset( $_SERVER['HTTP_TITLE'] ) )
            $slug = sanitize_file_name( $_SERVER['HTTP_TITLE'] );
        elseif ( empty( $slug ) ) // just make a random name
            $slug = substr( md5( uniqid( microtime() ) ), 0, 7);
        $ext = preg_replace( '|.*/([a-z0-9]+)|', '$1', $_SERVER['CONTENT_TYPE'] );
        $slug = "$slug.$ext";
        $file = wp_upload_bits( $slug, NULL, $bits);

        log_app('wp_upload_bits returns:',print_r($file,true));

        $url = $file['url'];
        $file = $file['file'];

        do_action('wp_create_file_in_uploads', $file); // replicate

        // Construct the attachment array
        $attachment = array(
            'post_title' => $slug,
            'post_content' => $slug,
            'post_status' => 'attachment',
            'post_parent' => 0,
            'post_mime_type' => $type,
            'guid' => $url
            );

        // Save the data
        $postID = wp_insert_attachment($attachment, $file);

        if (!$postID)
            $this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));

        $output = $this->get_entry($postID, 'attachment');

        $this->created($postID, $output, 'attachment');
        log_app('function',"create_attachment($postID)");
    }

    function put_attachment($postID) {
        // checked for valid content-types (atom+xml)
        // quick check and exit
        $this->get_accepted_content_type($this->atom_content_types);

        $parser = new AtomParser();
        if(!$parser->parse()) {
            $this->bad_request();
        }

        $parsed = array_pop($parser->feed->entries);

        // check for not found
        global $entry;
        $this->set_current_entry($postID);

        if(!current_user_can('edit_post', $entry['ID']))
            $this->auth_required(__('Sorry, you do not have the right to edit this post.'));

        extract($entry);

        $post_title = $parsed->title[1];
        $post_content = $parsed->content[1];
        $pubtimes = $this->get_publish_time($parsed->updated);
        $post_modified = $pubtimes[0];
        $post_modified_gmt = $pubtimes[1];

        $postdata = compact('ID', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_modified', 'post_modified_gmt');
        $this->escape($postdata);

        $result = wp_update_post($postdata);

        if (!$result) {
            $this->internal_error(__('For some strange yet very annoying reason, this post could not be edited.'));
        }

        log_app('function',"put_attachment($postID)");
        $this->ok();
    }

    function delete_attachment($postID) {
        log_app('function',"delete_attachment($postID). File '$location' deleted.");

        // check for not found
        global $entry;
        $this->set_current_entry($postID);

        if(!current_user_can('edit_post', $postID)) {
            $this->auth_required(__('Sorry, you do not have the right to delete this post.'));
        }

        $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
        $filetype = wp_check_filetype($location);

        if(!isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']))
            $this->internal_error(__('Error ocurred while accessing post metadata for file location.'));

        // delete file
        @unlink($location);

        // delete attachment
        $result = wp_delete_post($postID);

        if (!$result) {
            $this->internal_error(__('For some strange yet very annoying reason, this post could not be deleted.'));
        }

        log_app('function',"delete_attachment($postID). File '$location' deleted.");
        $this->ok();
    }

    function get_file($postID) {

        // check for not found
        global $entry;
        $this->set_current_entry($postID);

        // then whether user can edit the specific post
        if(!current_user_can('edit_post', $postID)) {
            $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
        }

        $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
        $filetype = wp_check_filetype($location);

        if(!isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']))
            $this->internal_error(__('Error ocurred while accessing post metadata for file location.'));

        status_header('200');
        header('Content-Type: ' . $entry['post_mime_type']);
        header('Connection: close');

        $fp = fopen($location, "rb");
        while(!feof($fp)) {
            echo fread($fp, 4096);
        }
        fclose($fp);

        log_app('function',"get_file($postID)");
        exit;
    }

    function put_file($postID) {

        // first check if user can upload
        if(!current_user_can('upload_files'))
            $this->auth_required(__('You do not have permission to upload files.'));

        // check for not found
        global $entry;
        $this->set_current_entry($postID);

        // then whether user can edit the specific post
        if(!current_user_can('edit_post', $postID)) {
            $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
        }

        $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
        $filetype = wp_check_filetype($location);

        if(!isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']))
            $this->internal_error(__('Error ocurred while accessing post metadata for file location.'));

        $fp = fopen("php://input", "rb");
        $localfp = fopen($location, "w+");
        while(!feof($fp)) {
            fwrite($localfp,fread($fp, 4096));
        }
        fclose($fp);
        fclose($localfp);

        $ID = $entry['ID'];
        $pubtimes = $this->get_publish_time($entry->published);
        $post_date = $pubtimes[0];
        $post_date_gmt = $pubtimes[1];
        $pubtimes = $this->get_publish_time($parsed->updated);
        $post_modified = $pubtimes[0];
        $post_modified_gmt = $pubtimes[1];

        $post_data = compact('ID', 'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt');
        $result = wp_update_post($post_data);

        if (!$result) {
            $this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
        }

        log_app('function',"put_file($postID)");
        $this->ok();
    }

    function get_entries_url($page = NULL) {
        if($GLOBALS['post_type'] == 'attachment') {
            $path = $this->MEDIA_PATH;
        } else {
            $path = $this->ENTRIES_PATH;
        }
        $url = $this->app_base . $path;
        if(isset($page) && is_int($page)) {
            $url .= "/$page";
        }
        return $url;
    }

    function the_entries_url($page = NULL) {
        echo $this->get_entries_url($page);
    }

    function get_categories_url($deprecated = '') {
        return $this->app_base . $this->CATEGORIES_PATH;
    }

    function the_categories_url() {
        echo $this->get_categories_url();
    }

    function get_attachments_url($page = NULL) {
        $url = $this->app_base . $this->MEDIA_PATH;
        if(isset($page) && is_int($page)) {
            $url .= "/$page";
        }
        return $url;
    }

    function the_attachments_url($page = NULL) {
        echo $this->get_attachments_url($page);
    }

    function get_service_url() {
        return $this->app_base . $this->SERVICE_PATH;
    }

    function get_entry_url($postID = NULL) {
        if(!isset($postID)) {
            global $post;
            $postID = (int) $post->ID;
        }

        $url = $this->app_base . $this->ENTRY_PATH . "/$postID";

        log_app('function',"get_entry_url() = $url");
        return $url;
    }

    function the_entry_url($postID = NULL) {
        echo $this->get_entry_url($postID);
    }

    function get_media_url($postID = NULL) {
        if(!isset($postID)) {
            global $post;
            $postID = (int) $post->ID;
        }

        $url = $this->app_base . $this->MEDIA_SINGLE_PATH ."/file/$postID";

        log_app('function',"get_media_url() = $url");
        return $url;
    }

    function the_media_url($postID = NULL) {
        echo $this->get_media_url($postID);
    }

    function set_current_entry($postID) {
        global $entry;
        log_app('function',"set_current_entry($postID)");

        if(!isset($postID)) {
            // $this->bad_request();
            $this->not_found();
        }

        $entry = wp_get_single_post($postID,ARRAY_A);

        if(!isset($entry) || !isset($entry['ID']))
            $this->not_found();

        return;
    }

    function get_posts($page = 1, $post_type = 'post') {
            log_app('function',"get_posts($page, '$post_type')");
            $feed = $this->get_feed($page, $post_type);
            $this->output($feed);
    }

    function get_attachments($page = 1, $post_type = 'attachment') {
        log_app('function',"get_attachments($page, '$post_type')");
        $GLOBALS['post_type'] = $post_type;
        $feed = $this->get_feed($page, $post_type);
        $this->output($feed);
    }

    function get_feed($page = 1, $post_type = 'post') {
        global $post, $wp, $wp_query, $posts, $wpdb, $blog_id;
        log_app('function',"get_feed($page, '$post_type')");
        ob_start();

        if(!isset($page)) {
            $page = 1;
        }
        $page = (int) $page;

        $count = get_option('posts_per_rss');

        wp('what_to_show=posts&posts_per_page=' . $count . '&offset=' . ($count * ($page-1) . '&orderby=modified'));

        $post = $GLOBALS['post'];
        $posts = $GLOBALS['posts'];
        $wp = $GLOBALS['wp'];
        $wp_query = $GLOBALS['wp_query'];
        $wpdb = $GLOBALS['wpdb'];
        $blog_id = (int) $GLOBALS['blog_id'];
        log_app('function',"query_posts(# " . print_r($wp_query, true) . "#)");

        log_app('function',"total_count(# $wp_query->max_num_pages #)");
        $last_page = $wp_query->max_num_pages;
        $next_page = (($page + 1) > $last_page) ? NULL : $page + 1;
        $prev_page = ($page - 1) < 1 ? NULL : $page - 1;
        $last_page = ((int)$last_page == 1 || (int)$last_page == 0) ? NULL : (int) $last_page;
        $self_page = $page > 1 ? $page : NULL;
?><feed xmlns="<?php echo $this->ATOM_NS ?>" xmlns:app="<?php echo $this->ATOMPUB_NS ?>" xml:lang="<?php echo get_option('rss_language'); ?>">
<id><?php $this->the_entries_url() ?></id>
<updated><?php echo mysql2date('Y-m-d\TH:i:s\Z', get_lastpostmodified('GMT')); ?></updated>
<title type="text"><?php bloginfo_rss('name') ?></title>
<subtitle type="text"><?php bloginfo_rss("description") ?></subtitle>
<link rel="first" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url() ?>" />
<?php if(isset($prev_page)): ?>
<link rel="previous" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($prev_page) ?>" />
<?php endif; ?>
<?php if(isset($next_page)): ?>
<link rel="next" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($next_page) ?>" />
<?php endif; ?>
<link rel="last" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($last_page) ?>" />
<link rel="self" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($self_page) ?>" />
<rights type="text">Copyright <?php echo mysql2date('Y', get_lastpostdate('blog')); ?></rights>
<?php the_generator( 'atom' ); ?>
<?php if ( have_posts() ) {
            while ( have_posts() ) {
                the_post();
                $this->echo_entry();
            }
        }
?></feed>
<?php
        $feed = ob_get_contents();
        ob_end_clean();
        return $feed;
    }

    function get_entry($postID, $post_type = 'post') {
        log_app('function',"get_entry($postID, '$post_type')");
        ob_start();
        switch($post_type) {
            case 'post':
                $varname = 'p';
                break;
            case 'attachment':
                $varname = 'attachment_id';
                break;
        }
        query_posts($varname . '=' . $postID);
        if ( have_posts() ) {
            while ( have_posts() ) {
                the_post();
                $this->echo_entry();
                log_app('$post',print_r($GLOBALS['post'],true));
                $entry = ob_get_contents();
                break;
            }
        }
        ob_end_clean();

        log_app('get_entry returning:',$entry);
        return $entry;
    }

    function echo_entry() { ?>
<entry xmlns="<?php echo $this->ATOM_NS ?>"
       xmlns:app="<?php echo $this->ATOMPUB_NS ?>" xml:lang="<?php echo get_option('rss_language'); ?>">
    <id><?php the_guid($GLOBALS['post']->ID); ?></id>
<?php list($content_type, $content) = prep_atom_text_construct(get_the_title()); ?>
    <title type="<?php echo $content_type ?>"><?php echo $content ?></title>
    <updated><?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?></updated>
    <published><?php echo get_post_time('Y-m-d\TH:i:s\Z', true); ?></published>
    <app:edited><?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?></app:edited>
    <app:control>
        <app:draft><?php echo ($GLOBALS['post']->post_status == 'draft' ? 'yes' : 'no') ?></app:draft>
    </app:control>
    <author>
        <name><?php the_author()?></name>
<?php if (get_the_author_url() && get_the_author_url() != 'http://') { ?>
        <uri><?php the_author_url()?></uri>
<?php } ?>
    </author>
<?php if($GLOBALS['post']->post_type == 'attachment') { ?>
    <link rel="edit-media" href="<?php $this->the_media_url() ?>" />
    <content type="<?php echo $GLOBALS['post']->post_mime_type ?>" src="<?php the_guid(); ?>"/>
<?php } else { ?>
    <link href="<?php the_permalink_rss() ?>" />
<?php if ( strlen( $GLOBALS['post']->post_content ) ) :
list($content_type, $content) = prep_atom_text_construct(get_the_content()); ?>
    <content type="<?php echo $content_type ?>"><?php echo $content ?></content>
<?php endif; ?>
<?php } ?>
    <link rel="edit" href="<?php $this->the_entry_url() ?>" />
<?php foreach(get_the_category() as $category) { ?>
    <category scheme="<?php bloginfo_rss('home') ?>" term="<?php echo $category->name?>" />
<?php } ?>
<?php list($content_type, $content) = prep_atom_text_construct(get_the_excerpt()); ?>
    <summary type="<?php echo $content_type ?>"><?php echo $content ?></summary>
</entry>
<?php }

    function ok() {
        log_app('Status','200: OK');
        header('Content-Type: text/plain');
        status_header('200');
        exit;
    }

    function no_content() {
        log_app('Status','204: No Content');
        header('Content-Type: text/plain');
        status_header('204');
        echo "Deleted.";
        exit;
    }

    function internal_error($msg = 'Internal Server Error') {
        log_app('Status','500: Server Error');
        header('Content-Type: text/plain');
        status_header('500');
        echo $msg;
        exit;
    }

    function bad_request() {
        log_app('Status','400: Bad Request');
        header('Content-Type: text/plain');
        status_header('400');
        exit;
    }

    function length_required() {
        log_app('Status','411: Length Required');
        header("HTTP/1.1 411 Length Required");
        header('Content-Type: text/plain');
        status_header('411');
        exit;
    }

    function invalid_media() {
        log_app('Status','415: Unsupported Media Type');
        header("HTTP/1.1 415 Unsupported Media Type");
        header('Content-Type: text/plain');
        exit;
    }

    function forbidden($reason='') {
        log_app('Status','403: Forbidden');
        header('Content-Type: text/plain');
        status_header('403');
        echo $reason;
        exit;
    }

    function not_found() {
        log_app('Status','404: Not Found');
        header('Content-Type: text/plain');
        status_header('404');
        exit;
    }

    function not_allowed($allow) {
        log_app('Status','405: Not Allowed');
        header('Allow: ' . join(',', $allow));
        status_header('405');
        exit;
    }

    function redirect($url) {

        log_app('Status','302: Redirect');
        $escaped_url = attribute_escape($url);
        $content = <<<EOD
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html>
  <head>
    <title>302 Found</title>
  </head>
<body>
  <h1>Found</h1>
  <p>The document has moved <a href="$escaped_url">here</a>.</p>
  </body>
</html>

EOD;
        header('HTTP/1.1 302 Moved');
        header('Content-Type: text/html');
        header('Location: ' . $url);
        echo $content;
        exit;

    }


    function client_error($msg = 'Client Error') {
        log_app('Status','400: Client Error');
        header('Content-Type: text/plain');
        status_header('400');
        exit;
    }

    function created($post_ID, $content, $post_type = 'post') {
        log_app('created()::$post_ID',"$post_ID, $post_type");
        $edit = $this->get_entry_url($post_ID);
        switch($post_type) {
            case 'post':
                $ctloc = $this->get_entry_url($post_ID);
                break;
            case 'attachment':
                $edit = $this->app_base . "attachments/$post_ID";
                break;
        }
        header("Content-Type: $this->ATOM_CONTENT_TYPE");
        if(isset($ctloc))
            header('Content-Location: ' . $ctloc);
        header('Location: ' . $edit);
        status_header('201');
        echo $content;
        exit;
    }

    function auth_required($msg) {
        log_app('Status','401: Auth Required');
        nocache_headers();
        header('WWW-Authenticate: Basic realm="WordPress Atom Protocol"');
        header("HTTP/1.1 401 $msg");
        header('Status: ' . $msg);
        header('Content-Type: text/html');
        $content = <<<EOD
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html>
  <head>
    <title>401 Unauthorized</title>
  </head>
<body>
    <h1>401 Unauthorized</h1>
    <p>$msg</p>
  </body>
</html>

EOD;
        echo $content;
        exit;
    }

    function output($xml, $ctype = 'application/atom+xml') {
            status_header('200');
            $xml = '<?xml version="1.0" encoding="' . strtolower(get_option('blog_charset')) . '"?>'."\n".$xml;
            header('Connection: close');
            header('Content-Length: '. strlen($xml));
            header('Content-Type: ' . $ctype);
            header('Content-Disposition: attachment; filename=atom.xml');
            header('Date: '. date('r'));
            if($this->do_output)
                echo $xml;
            log_app('function', "output:\n$xml");
            exit;
    }

    function escape(&$array) {
        global $wpdb;

        foreach ($array as $k => $v) {
                if (is_array($v)) {
                        $this->escape($array[$k]);
                } else if (is_object($v)) {
                        //skip
                } else {
                        $array[$k] = $wpdb->escape($v);
                }
        }
    }

    /*
     * Access credential through various methods and perform login
     */
    function authenticate() {
        log_app("authenticate()",print_r($_ENV, true));

        // if using mod_rewrite/ENV hack
        // http://www.besthostratings.com/articles/http-auth-php-cgi.html
        if(isset($_SERVER['HTTP_AUTHORIZATION'])) {
            list($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']) =
                explode(':', base64_decode(substr($_SERVER['HTTP_AUTHORIZATION'], 6)));
        }

        // If Basic Auth is working...
        if(isset($_SERVER['PHP_AUTH_USER']) && isset($_SERVER['PHP_AUTH_PW'])) {
            log_app("Basic Auth",$_SERVER['PHP_AUTH_USER']);
            $user = wp_authenticate($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']);
            if ( $user && !is_wp_error($user) ) {
                wp_set_current_user($user->ID);
                log_app("authenticate()", $_SERVER['PHP_AUTH_USER']);
                return true;
            }
        }

        return false;
    }

    function get_accepted_content_type($types = NULL) {

        if(!isset($types)) {
            $types = $this->media_content_types;
        }

        if(!isset($_SERVER['CONTENT_LENGTH']) || !isset($_SERVER['CONTENT_TYPE'])) {
            $this->length_required();
        }

        $type = $_SERVER['CONTENT_TYPE'];
        list($type,$subtype) = explode('/',$type);
        list($subtype) = explode(";",$subtype); // strip MIME parameters
        log_app("get_accepted_content_type", "type=$type, subtype=$subtype");

        foreach($types as $t) {
            list($acceptedType,$acceptedSubtype) = explode('/',$t);
            if($acceptedType == '*' || $acceptedType == $type) {
                if($acceptedSubtype == '*' || $acceptedSubtype == $subtype)
                    return $type . "/" . $subtype;
            }
        }

        $this->invalid_media();
    }

    function process_conditionals() {

        if(empty($this->params)) return;
        if($_SERVER['REQUEST_METHOD'] == 'DELETE') return;

        switch($this->params[0]) {
            case $this->ENTRY_PATH:
                global $post;
                $post = wp_get_single_post($this->params[1]);
                $wp_last_modified = get_post_modified_time('D, d M Y H:i:s', true);
                $post = NULL;
                break;
            case $this->ENTRIES_PATH:
                $wp_last_modified = mysql2date('D, d M Y H:i:s', get_lastpostmodified('GMT'), 0).' GMT';
                break;
            default:
                return;
        }
        $wp_etag = md5($wp_last_modified);
        @header("Last-Modified: $wp_last_modified");
        @header("ETag: $wp_etag");

        // Support for Conditional GET
        if (isset($_SERVER['HTTP_IF_NONE_MATCH']))
            $client_etag = stripslashes($_SERVER['HTTP_IF_NONE_MATCH']);
        else
            $client_etag = false;

        $client_last_modified = trim( $_SERVER['HTTP_IF_MODIFIED_SINCE']);
        // If string is empty, return 0. If not, attempt to parse into a timestamp
        $client_modified_timestamp = $client_last_modified ? strtotime($client_last_modified) : 0;

        // Make a timestamp for our most recent modification...
        $wp_modified_timestamp = strtotime($wp_last_modified);

        if ( ($client_last_modified && $client_etag) ?
        (($client_modified_timestamp >= $wp_modified_timestamp) && ($client_etag == $wp_etag)) :
        (($client_modified_timestamp >= $wp_modified_timestamp) || ($client_etag == $wp_etag)) ) {
            status_header( 304 );
            exit;
        }
    }

    function rfc3339_str2time($str) {

        $match = false;
        if(!preg_match("/(\d{4}-\d{2}-\d{2})T(\d{2}\:\d{2}\:\d{2})\.?\d{0,3}(Z|[+-]+\d{2}\:\d{2})/", $str, $match))
            return false;

        if($match[3] == 'Z')
            $match[3] == '+0000';

        return strtotime($match[1] . " " . $match[2] . " " . $match[3]);
    }

    function get_publish_time($published) {

        $pubtime = $this->rfc3339_str2time($published);

        if(!$pubtime) {
            return array(current_time('mysql'),current_time('mysql',1));
        } else {
            return array(date("Y-m-d H:i:s", $pubtime), gmdate("Y-m-d H:i:s", $pubtime));
        }
    }

}

$server = new AtomServer();
$server->handle_request();

?>