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<title>[20062] trunk: wp-app.php cleanup:</title>
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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://core.trac.wordpress.org/changeset/20062">20062</a></dd>
<dt>Author</dt> <dd>ryan</dd>
<dt>Date</dt> <dd>2012-03-01 21:15:44 +0000 (Thu, 01 Mar 2012)</dd>
</dl>

<h3>Log Message</h3>
<pre>wp-app.php cleanup:

* Put the atom server class in class-wp-atom-server.php
* Remove log_api calls
* Update the query filter
* Replace exit calls with wp_die() for unit test compat
* Add override handler for wp_die()
* Allow plugins to replace the atom class
* Whitespace cleanup

Props kurtpayne. fixes <a href="http://core.trac.wordpress.org/ticket/20042">#20042</a></pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkwpappphp">trunk/wp-app.php</a></li>
</ul>

<h3>Added Paths</h3>
<ul>
<li><a href="#trunkwpincludesclasswpatomserverphp">trunk/wp-includes/class-wp-atom-server.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkwpappphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-app.php (20061 => 20062)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-app.php        2012-03-01 19:00:20 UTC (rev 20061)
+++ trunk/wp-app.php        2012-03-01 21:15:44 UTC (rev 20062)
</span><span class="lines">@@ -18,21 +18,15 @@
</span><span class="cx"> /** Atom Publishing Protocol Class */
</span><span class="cx"> require_once(ABSPATH . WPINC . '/atomlib.php');
</span><span class="cx"> 
</span><ins>+/** Atom Server **/
+require_once(ABSPATH . WPINC . '/class-wp-atom-server.php');
+
</ins><span class="cx"> /** Admin Image API for metadata updating */
</span><span class="cx"> require_once(ABSPATH . '/wp-admin/includes/image.php');
</span><span class="cx"> 
</span><span class="cx"> $_SERVER['PATH_INFO'] = preg_replace( '/.*\/wp-app\.php/', '', $_SERVER['REQUEST_URI'] );
</span><span class="cx"> 
</span><span class="cx"> /**
</span><del>- * Whether to always authenticate user. Permanently set to true.
- *
- * @name always_authenticate
- * @var int|bool
- * @todo Should be an option somewhere
- */
-$always_authenticate = 1;
-
-/**
</del><span class="cx">  * Writes logging info to a file.
</span><span class="cx">  *
</span><span class="cx">  * @since 2.2.0
</span><span class="lines">@@ -46,1511 +40,12 @@
</span><span class="cx"> function log_app( $label, $msg ) {
</span><span class="cx">         _deprecated_function( __FUNCTION__, '3.4', 'error_log()' );
</span><span class="cx">         if ( ! empty( $GLOBALS['app_logging'] ) )
</span><del>-                error_log( $label . ' - ' . $message );
</del><ins>+                        error_log( $label . ' - ' . $message );
</ins><span class="cx"> }
</span><span class="cx"> 
</span><del>-/**
- * Filter to add more post statuses.
- *
- * @since 2.2.0
- *
- * @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(&quot;post_status = 'publish'&quot;,&quot;post_status = 'publish' OR post_status = 'future' OR post_status = 'draft' OR post_status = 'inherit'&quot;, $where);
-        return $where;
</del><ins>+// Allow for a plugin to insert a different class to handle requests.
+$wp_atom_server_class = apply_filters('wp_atom_server_class', 'wp_atom_server');
+$wp_atom_server = new $wp_atom_server_class;
</ins><span class="cx"> 
</span><del>-}
-add_filter('posts_where', 'wa_posts_where_include_drafts_filter');
-
-/**
- * WordPress AtomPub API implementation.
- *
- * @package WordPress
- * @subpackage Publishing
- * @since 2.2.0
- */
-class AtomServer {
-
-        /**
-         * ATOM content type.
-         *
-         * @since 2.2.0
-         * @var string
-         */
-        var $ATOM_CONTENT_TYPE = 'application/atom+xml';
-
-        /**
-         * Categories ATOM content type.
-         *
-         * @since 2.2.0
-         * @var string
-         */
-        var $CATEGORIES_CONTENT_TYPE = 'application/atomcat+xml';
-
-        /**
-         * Service ATOM content type.
-         *
-         * @since 2.3.0
-         * @var string
-         */
-        var $SERVICE_CONTENT_TYPE = 'application/atomsvc+xml';
-
-        /**
-         * ATOM XML namespace.
-         *
-         * @since 2.3.0
-         * @var string
-         */
-        var $ATOM_NS = 'http://www.w3.org/2005/Atom';
-
-        /**
-         * ATOMPUB XML namespace.
-         *
-         * @since 2.3.0
-         * @var string
-         */
-        var $ATOMPUB_NS = 'http://www.w3.org/2007/app';
-
-        /**
-         * Entries path.
-         *
-         * @since 2.2.0
-         * @var string
-         */
-        var $ENTRIES_PATH = &quot;posts&quot;;
-
-        /**
-         * Categories path.
-         *
-         * @since 2.2.0
-         * @var string
-         */
-        var $CATEGORIES_PATH = &quot;categories&quot;;
-
-        /**
-         * Media path.
-         *
-         * @since 2.2.0
-         * @var string
-         */
-        var $MEDIA_PATH = &quot;attachments&quot;;
-
-        /**
-         * Entry path.
-         *
-         * @since 2.2.0
-         * @var string
-         */
-        var $ENTRY_PATH = &quot;post&quot;;
-
-        /**
-         * Service path.
-         *
-         * @since 2.2.0
-         * @var string
-         */
-        var $SERVICE_PATH = &quot;service&quot;;
-
-        /**
-         * Media single path.
-         *
-         * @since 2.2.0
-         * @var string
-         */
-        var $MEDIA_SINGLE_PATH = &quot;attachment&quot;;
-
-        /**
-         * ATOMPUB parameters.
-         *
-         * @since 2.2.0
-         * @var array
-         */
-        var $params = array();
-
-        /**
-         * Supported ATOMPUB media types.
-         *
-         * @since 2.3.0
-         * @var array
-         */
-        var $media_content_types = array('image/*','audio/*','video/*');
-
-        /**
-         * ATOMPUB content type(s).
-         *
-         * @since 2.2.0
-         * @var array
-         */
-        var $atom_content_types = array('application/atom+xml');
-
-        /**
-         * ATOMPUB methods.
-         *
-         * @since 2.2.0
-         * @var unknown_type
-         */
-        var $selectors = array();
-
-        /**
-         * Whether to do output.
-         *
-         * Support for head.
-         *
-         * @since 2.2.0
-         * @var bool
-         */
-        var $do_output = true;
-
-        /**
-         * Constructor - Sets up object properties.
-         *
-         * @since 2.2.0
-         * @return AtomServer
-         */
-        function __construct() {
-
-                $var_by_ref = explode( '/', $_SERVER['SCRIPT_NAME'] );
-                $this-&gt;script_name = array_pop( $var_by_ref );
-                $this-&gt;app_base = site_url( $this-&gt;script_name . '/' );
-
-                $this-&gt;selectors = array(
-                        '@/service$@' =&gt;
-                                array('GET' =&gt; 'get_service'),
-                        '@/categories$@' =&gt;
-                                array('GET' =&gt; 'get_categories_xml'),
-                        '@/post/(\d+)$@' =&gt;
-                                array('GET' =&gt; 'get_post',
-                                                'PUT' =&gt; 'put_post',
-                                                'DELETE' =&gt; 'delete_post'),
-                        '@/posts/?(\d+)?$@' =&gt;
-                                array('GET' =&gt; 'get_posts',
-                                                'POST' =&gt; 'create_post'),
-                        '@/attachments/?(\d+)?$@' =&gt;
-                                array('GET' =&gt; 'get_attachment',
-                                                'POST' =&gt; 'create_attachment'),
-                        '@/attachment/file/(\d+)$@' =&gt;
-                                array('GET' =&gt; 'get_file',
-                                                'PUT' =&gt; 'put_file',
-                                                'DELETE' =&gt; 'delete_file'),
-                        '@/attachment/(\d+)$@' =&gt;
-                                array('GET' =&gt; 'get_attachment',
-                                                'PUT' =&gt; 'put_attachment',
-                                                'DELETE' =&gt; 'delete_attachment'),
-                );
-        }
-
-        /**
-         * Handle ATOMPUB request.
-         *
-         * @since 2.2.0
-         */
-        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'];
-
-                $this-&gt;process_conditionals();
-                //$this-&gt;process_conditionals();
-
-                // exception case for HEAD (treat exactly as GET, but don't output)
-                if ($method == 'HEAD') {
-                        $this-&gt;do_output = false;
-                        $method = 'GET';
-                }
-
-                // redirect to /service in case no path is found.
-                if (strlen($path) == 0 || $path == '/')
-                        $this-&gt;redirect($this-&gt;get_service_url());
-
-                // check to see if AtomPub is enabled
-                if ( !get_option( 'enable_app' ) )
-                        $this-&gt;forbidden( sprintf( __( 'AtomPub services are disabled on this site. An admin user can enable them at %s' ), admin_url('options-writing.php') ) );
-
-                // dispatch
-                foreach ( $this-&gt;selectors as $regex =&gt; $funcs ) {
-                        if ( preg_match($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-&gt;authenticate() ) {
-                                                if ( $always_authenticate )
-                                                        $this-&gt;auth_required('Credentials required.');
-                                        }
-
-                                        array_shift($matches);
-                                        call_user_func_array(array(&amp;$this,$funcs[$method]), $matches);
-                                        exit();
-                                } else {
-                                        // only allow what we have handlers for...
-                                        $this-&gt;not_allowed(array_keys($funcs));
-                                }
-                        }
-                }
-
-                // oops, nothing found
-                $this-&gt;not_found();
-        }
-
-        /**
-         * Retrieve XML for ATOMPUB service.
-         *
-         * @since 2.2.0
-         */
-        function get_service() {
-                if ( !current_user_can( 'edit_posts' ) )
-                        $this-&gt;auth_required( __( 'Sorry, you do not have the right to access this site.' ) );
-
-                $entries_url = esc_attr($this-&gt;get_entries_url());
-                $categories_url = esc_attr($this-&gt;get_categories_url());
-                $media_url = esc_attr($this-&gt;get_attachments_url());
-                $accepted_media_types = '';
-                foreach ($this-&gt;media_content_types as $med) {
-                        $accepted_media_types = $accepted_media_types . &quot;&lt;accept&gt;&quot; . $med . &quot;&lt;/accept&gt;&quot;;
-                }
-                $atom_prefix=&quot;atom&quot;;
-                $atom_blogname = get_bloginfo('name');
-                $service_doc = &lt;&lt;&lt;EOD
-&lt;service xmlns=&quot;$this-&gt;ATOMPUB_NS&quot; xmlns:$atom_prefix=&quot;$this-&gt;ATOM_NS&quot;&gt;
-  &lt;workspace&gt;
-    &lt;$atom_prefix:title&gt;$atom_blogname Workspace&lt;/$atom_prefix:title&gt;
-    &lt;collection href=&quot;$entries_url&quot;&gt;
-      &lt;$atom_prefix:title&gt;$atom_blogname Posts&lt;/$atom_prefix:title&gt;
-      &lt;accept&gt;$this-&gt;ATOM_CONTENT_TYPE;type=entry&lt;/accept&gt;
-      &lt;categories href=&quot;$categories_url&quot; /&gt;
-    &lt;/collection&gt;
-    &lt;collection href=&quot;$media_url&quot;&gt;
-      &lt;$atom_prefix:title&gt;$atom_blogname Media&lt;/$atom_prefix:title&gt;
-      $accepted_media_types
-    &lt;/collection&gt;
-  &lt;/workspace&gt;
-&lt;/service&gt;
-
-EOD;
-
-                $this-&gt;output($service_doc, $this-&gt;SERVICE_CONTENT_TYPE);
-        }
-
-        /**
-         * Retrieve categories list in XML format.
-         *
-         * @since 2.2.0
-         */
-        function get_categories_xml() {
-                if ( !current_user_can( 'edit_posts' ) )
-                        $this-&gt;auth_required( __( 'Sorry, you do not have the right to access this site.' ) );
-
-                $home = esc_attr(get_bloginfo_rss('url'));
-
-                $categories = &quot;&quot;;
-                $cats = get_categories(array('hierarchical' =&gt; 0, 'hide_empty' =&gt; 0));
-                foreach ( (array) $cats as $cat ) {
-                        $categories .= &quot;    &lt;category term=\&quot;&quot; . esc_attr($cat-&gt;name) . &quot;\&quot; /&gt;\n&quot;;
-                }
-                $output = &lt;&lt;&lt;EOD
-&lt;app:categories xmlns:app=&quot;$this-&gt;ATOMPUB_NS&quot;
-        xmlns=&quot;$this-&gt;ATOM_NS&quot;
-        fixed=&quot;yes&quot; scheme=&quot;$home&quot;&gt;
-        $categories
-&lt;/app:categories&gt;
-EOD;
-                $this-&gt;output($output, $this-&gt;CATEGORIES_CONTENT_TYPE);
-        }
-
-        /**
-         * Create new post.
-         *
-         * @since 2.2.0
-         */
-        function create_post() {
-                global $user_ID;
-                $this-&gt;get_accepted_content_type($this-&gt;atom_content_types);
-
-                $parser = new AtomParser();
-                if ( !$parser-&gt;parse() )
-                        $this-&gt;client_error();
-
-                $entry = array_pop($parser-&gt;feed-&gt;entries);
-
-                $catnames = array();
-                if ( !empty( $entry-&gt;categories ) ) {
-                        foreach ( $entry-&gt;categories as $cat ) {
-                                array_push($catnames, $cat[&quot;term&quot;]);
-                        }
-                }
-
-                $wp_cats = get_categories(array('hide_empty' =&gt; false));
-
-                $post_category = array();
-
-                foreach ( $wp_cats as $cat ) {
-                        if ( in_array($cat-&gt;name, $catnames) )
-                                array_push($post_category, $cat-&gt;term_id);
-                }
-
-                $publish = ! ( isset( $entry-&gt;draft ) &amp;&amp; 'yes' == trim( $entry-&gt;draft ) );
-
-                $cap = ($publish) ? 'publish_posts' : 'edit_posts';
-
-                if ( !current_user_can($cap) )
-                        $this-&gt;auth_required(__('Sorry, you do not have the right to edit/publish new posts.'));
-
-                $blog_ID = get_current_blog_id();
-                $post_status = ($publish) ? 'publish' : 'draft';
-                $post_author = (int) $user_ID;
-
-                $post_title   = '';
-                $post_content = '';
-                $post_excerpt = '';
-                $pubtimes     = '';
-
-                if ( isset( $entry-&gt;title ) &amp;&amp; is_array( $entry-&gt;title ) &amp;&amp; !empty( $entry-&gt;title[1] ) )
-                        $post_title = (string) $entry-&gt;title[1];
-                if ( isset( $entry-&gt;content ) &amp;&amp; is_array( $entry-&gt;content ) &amp;&amp; !empty( $entry-&gt;content[1] ) )
-                        $post_content = (string) $entry-&gt;content[1];
-                if ( isset( $entry-&gt;summary ) &amp;&amp; is_array( $entry-&gt;summary ) &amp;&amp; !empty( $entry-&gt;summary[1] ) )
-                        $post_excerpt = (string) $entry-&gt;summary[1];
-                if ( !empty( $entry-&gt;published ) )
-                        $pubtimes = (string) $entry-&gt;published;
-
-                $pubtimes = $this-&gt;get_publish_time( $pubtimes );
-
-                $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');
-
-                $this-&gt;escape($post_data);
-
-                $postID = wp_insert_post($post_data);
-                if ( is_wp_error( $postID ) )
-                        $this-&gt;internal_error($postID-&gt;get_error_message());
-
-                if ( !$postID )
-                        $this-&gt;internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
-
-                // getting warning here about unable to set headers
-                // because something in the cache is printing to the buffer
-                // could we clean up wp_set_post_categories or cache to not print
-                // this could affect our ability to send back the right headers
-                @wp_set_post_categories($postID, $post_category);
-
-                do_action( 'atompub_create_post', $postID, $entry );
-
-                $output = $this-&gt;get_entry($postID);
-
-                $this-&gt;created($postID, $output);
-        }
-
-        /**
-         * Retrieve post.
-         *
-         * @since 2.2.0
-         *
-         * @param int $postID Post ID.
-         */
-        function get_post($postID) {
-                global $entry;
-
-                if ( !current_user_can( 'edit_post', $postID ) )
-                        $this-&gt;auth_required( __( 'Sorry, you do not have the right to access this post.' ) );
-
-                $this-&gt;set_current_entry($postID);
-                $output = $this-&gt;get_entry($postID);
-                $this-&gt;output($output);
-
-        }
-
-        /**
-         * Update post.
-         *
-         * @since 2.2.0
-         *
-         * @param int $postID Post ID.
-         */
-        function put_post($postID) {
-                // checked for valid content-types (atom+xml)
-                // quick check and exit
-                $this-&gt;get_accepted_content_type($this-&gt;atom_content_types);
-
-                $parser = new AtomParser();
-                if ( !$parser-&gt;parse() )
-                        $this-&gt;bad_request();
-
-                $parsed = array_pop($parser-&gt;feed-&gt;entries);
-
-                // check for not found
-                global $entry;
-                $this-&gt;set_current_entry($postID);
-
-                if ( !current_user_can('edit_post', $entry['ID']) )
-                        $this-&gt;auth_required(__('Sorry, you do not have the right to edit this post.'));
-
-                $publish = ! ( isset($parsed-&gt;draft) &amp;&amp; 'yes' == trim($parsed-&gt;draft) );
-                $post_status = ($publish) ? 'publish' : 'draft';
-
-                extract($entry);
-
-                $post_title = $parsed-&gt;title[1];
-                $post_content = $parsed-&gt;content[1];
-                $post_excerpt = $parsed-&gt;summary[1];
-                $pubtimes = $this-&gt;get_publish_time($entry-&gt;published);
-                $post_date = $pubtimes[0];
-                $post_date_gmt = $pubtimes[1];
-                $pubtimes = $this-&gt;get_publish_time($parsed-&gt;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');
-                $this-&gt;escape($postdata);
-
-                $result = wp_update_post($postdata);
-
-                if ( !$result )
-                        $this-&gt;internal_error(__('For some strange yet very annoying reason, this post could not be edited.'));
-
-                do_action( 'atompub_put_post', $ID, $parsed );
-
-                $this-&gt;ok();
-        }
-
-        /**
-         * Remove post.
-         *
-         * @since 2.2.0
-         *
-         * @param int $postID Post ID.
-         */
-        function delete_post($postID) {
-
-                // check for not found
-                global $entry;
-                $this-&gt;set_current_entry($postID);
-
-                if ( !current_user_can('edit_post', $postID) )
-                        $this-&gt;auth_required(__('Sorry, you do not have the right to delete this post.'));
-
-                if ( $entry['post_type'] == 'attachment' ) {
-                        $this-&gt;delete_attachment($postID);
-                } else {
-                        $result = wp_delete_post($postID);
-
-                        if ( !$result ) {
-                                $this-&gt;internal_error(__('For some strange yet very annoying reason, this post could not be deleted.'));
-                        }
-
-                        $this-&gt;ok();
-                }
-
-        }
-
-        /**
-         * Retrieve attachment.
-         *
-         * @since 2.2.0
-         *
-         * @param int $postID Optional. Post ID.
-         */
-        function get_attachment($postID = null) {
-                if ( !current_user_can( 'upload_files' ) )
-                        $this-&gt;auth_required( __( 'Sorry, you do not have permission to upload files.' ) );
-
-                if ( !isset($postID) ) {
-                        $this-&gt;get_attachments();
-                } else {
-                        $this-&gt;set_current_entry($postID);
-                        $output = $this-&gt;get_entry($postID, 'attachment');
-                        $this-&gt;output($output);
-                }
-        }
-
-        /**
-         * Create new attachment.
-         *
-         * @since 2.2.0
-         */
-        function create_attachment() {
-
-                $type = $this-&gt;get_accepted_content_type();
-
-                if ( !current_user_can('upload_files') )
-                        $this-&gt;auth_required(__('You do not have permission to upload files.'));
-
-                $fp = fopen(&quot;php://input&quot;, &quot;rb&quot;);
-                $bits = null;
-                while ( !feof($fp) ) {
-                        $bits .= fread($fp, 4096);
-                }
-                fclose($fp);
-
-                $slug = '';
-                if ( isset( $_SERVER['HTTP_SLUG'] ) )
-                        $slug = $_SERVER['HTTP_SLUG'];
-                elseif ( isset( $_SERVER['HTTP_TITLE'] ) )
-                        $slug = $_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'] );
-                $slug = sanitize_file_name( &quot;$slug.$ext&quot; );
-                $file = wp_upload_bits( $slug, null, $bits);
-
-                $url = $file['url'];
-                $file = $file['file'];
-
-                do_action('wp_create_file_in_uploads', $file); // replicate
-
-                // Construct the attachment array
-                $attachment = array(
-                        'post_title' =&gt; $slug,
-                        'post_content' =&gt; $slug,
-                        'post_status' =&gt; 'attachment',
-                        'post_parent' =&gt; 0,
-                        'post_mime_type' =&gt; $type,
-                        'guid' =&gt; $url
-                        );
-
-                // Save the data
-                $postID = wp_insert_attachment($attachment, $file);
-
-                if (!$postID)
-                        $this-&gt;internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
-
-                $output = $this-&gt;get_entry($postID, 'attachment');
-
-                $this-&gt;created($postID, $output, 'attachment');
-        }
-
-        /**
-         * Update attachment.
-         *
-         * @since 2.2.0
-         *
-         * @param int $postID Post ID.
-         */
-        function put_attachment($postID) {
-                // checked for valid content-types (atom+xml)
-                // quick check and exit
-                $this-&gt;get_accepted_content_type($this-&gt;atom_content_types);
-
-                $parser = new AtomParser();
-                if (!$parser-&gt;parse()) {
-                        $this-&gt;bad_request();
-                }
-
-                $parsed = array_pop($parser-&gt;feed-&gt;entries);
-
-                // check for not found
-                global $entry;
-                $this-&gt;set_current_entry($postID);
-
-                if ( !current_user_can('edit_post', $entry['ID']) )
-                        $this-&gt;auth_required(__('Sorry, you do not have the right to edit this post.'));
-
-                extract($entry);
-
-                $post_title = $parsed-&gt;title[1];
-                $post_content = $parsed-&gt;summary[1];
-                $pubtimes = $this-&gt;get_publish_time($parsed-&gt;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');
-                $this-&gt;escape($postdata);
-
-                $result = wp_update_post($postdata);
-
-                if ( !$result )
-                        $this-&gt;internal_error(__('For some strange yet very annoying reason, this post could not be edited.'));
-
-                $this-&gt;ok();
-        }
-
-        /**
-         * Remove attachment.
-         *
-         * @since 2.2.0
-         *
-         * @param int $postID Post ID.
-         */
-        function delete_attachment($postID) {
-                // check for not found
-                global $entry;
-                $this-&gt;set_current_entry($postID);
-
-                if ( !current_user_can('edit_post', $postID) )
-                        $this-&gt;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']) )
-                        $this-&gt;internal_error(__('Error occurred while accessing post metadata for file location.'));
-
-                // delete file
-                @unlink($location);
-
-                // delete attachment
-                $result = wp_delete_post($postID);
-
-                if ( !$result )
-                        $this-&gt;internal_error(__('For some strange yet very annoying reason, this post could not be deleted.'));
-
-                $this-&gt;ok();
-        }
-
-        /**
-         * Retrieve attachment from post.
-         *
-         * @since 2.2.0
-         *
-         * @param int $postID Post ID.
-         */
-        function get_file($postID) {
-
-                // check for not found
-                global $entry;
-                $this-&gt;set_current_entry($postID);
-
-                // then whether user can edit the specific post
-                if ( !current_user_can('edit_post', $postID) )
-                        $this-&gt;auth_required(__('Sorry, you do not have the right to edit this post.'));
-
-                $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
-                $location = get_option ('upload_path') . '/' . $location;
-                $filetype = wp_check_filetype($location);
-
-                if ( !isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']) )
-                        $this-&gt;internal_error(__('Error occurred while accessing post metadata for file location.'));
-
-                status_header('200');
-                header('Content-Type: ' . $entry['post_mime_type']);
-                header('Connection: close');
-
-                if ( $fp = fopen($location, &quot;rb&quot;) ) {
-                        status_header('200');
-                        header('Content-Type: ' . $entry['post_mime_type']);
-                        header('Connection: close');
-
-                        while ( !feof($fp) ) {
-                                echo fread($fp, 4096);
-                        }
-
-                        fclose($fp);
-                } else {
-                        status_header ('404');
-                }
-
-                exit;
-        }
-
-        /**
-         * Upload file to blog and add attachment to post.
-         *
-         * @since 2.2.0
-         *
-         * @param int $postID Post ID.
-         */
-        function put_file($postID) {
-
-                // first check if user can upload
-                if ( !current_user_can('upload_files') )
-                        $this-&gt;auth_required(__('You do not have permission to upload files.'));
-
-                // check for not found
-                global $entry;
-                $this-&gt;set_current_entry($postID);
-
-                // then whether user can edit the specific post
-                if ( !current_user_can('edit_post', $postID) )
-                        $this-&gt;auth_required(__('Sorry, you do not have the right to edit this post.'));
-
-                $upload_dir = wp_upload_dir( );
-                $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
-                $filetype = wp_check_filetype($location);
-
-                $location = &quot;{$upload_dir['basedir']}/{$location}&quot;;
-
-                if (!isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']))
-                        $this-&gt;internal_error(__('Error occurred while accessing post metadata for file location.'));
-
-                $fp = fopen(&quot;php://input&quot;, &quot;rb&quot;);
-                $localfp = fopen($location, &quot;w+&quot;);
-                while ( !feof($fp) ) {
-                        fwrite($localfp,fread($fp, 4096));
-                }
-                fclose($fp);
-                fclose($localfp);
-
-                $ID = $entry['ID'];
-                $pubtimes = $this-&gt;get_publish_time($entry-&gt;published);
-                $post_date = $pubtimes[0];
-                $post_date_gmt = $pubtimes[1];
-                $pubtimes = $this-&gt;get_publish_time($parsed-&gt;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-&gt;internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
-
-                wp_update_attachment_metadata( $postID, wp_generate_attachment_metadata( $postID, $location ) );
-
-                $this-&gt;ok();
-        }
-
-        /**
-         * Retrieve entries URL.
-         *
-         * @since 2.2.0
-         *
-         * @param int $page Page ID.
-         * @return string
-         */
-        function get_entries_url($page = null) {
-                if ( isset($GLOBALS['post_type']) &amp;&amp; ( $GLOBALS['post_type'] == 'attachment' ) )
-                        $path = $this-&gt;MEDIA_PATH;
-                else
-                        $path = $this-&gt;ENTRIES_PATH;
-                $url = $this-&gt;app_base . $path;
-                if ( isset($page) &amp;&amp; is_int($page) )
-                        $url .= &quot;/$page&quot;;
-                return $url;
-        }
-
-        /**
-         * Display entries URL.
-         *
-         * @since 2.2.0
-         *
-         * @param int $page Page ID.
-         */
-        function the_entries_url($page = null) {
-                echo $this-&gt;get_entries_url($page);
-        }
-
-        /**
-         * Retrieve categories URL.
-         *
-         * @since 2.2.0
-         *
-         * @param mixed $deprecated Not used.
-         * @return string
-         */
-        function get_categories_url($deprecated = '') {
-                if ( !empty( $deprecated ) )
-                        _deprecated_argument( __FUNCTION__, '2.5' );
-                return $this-&gt;app_base . $this-&gt;CATEGORIES_PATH;
-        }
-
-        /**
-         * Display category URL.
-         *
-         * @since 2.2.0
-         */
-        function the_categories_url() {
-                echo $this-&gt;get_categories_url();
-        }
-
-        /**
-         * Retrieve attachment URL.
-         *
-         * @since 2.2.0
-         *
-         * @param int $page Page ID.
-         * @return string
-         */
-        function get_attachments_url($page = null) {
-                $url = $this-&gt;app_base . $this-&gt;MEDIA_PATH;
-                if (isset($page) &amp;&amp; is_int($page)) {
-                        $url .= &quot;/$page&quot;;
-                }
-                return $url;
-        }
-
-        /**
-         * Display attachment URL.
-         *
-         * @since 2.2.0
-         *
-         * @param int $page Page ID.
-         */
-        function the_attachments_url($page = null) {
-                echo $this-&gt;get_attachments_url($page);
-        }
-
-        /**
-         * Retrieve service URL.
-         *
-         * @since 2.3.0
-         *
-         * @return string
-         */
-        function get_service_url() {
-                return $this-&gt;app_base . $this-&gt;SERVICE_PATH;
-        }
-
-        /**
-         * Retrieve entry URL.
-         *
-         * @since 2.7.0
-         *
-         * @param int $postID Post ID.
-         * @return string
-         */
-        function get_entry_url($postID = null) {
-                if (!isset($postID)) {
-                        global $post;
-                        $postID = (int) $post-&gt;ID;
-                }
-
-                $url = $this-&gt;app_base . $this-&gt;ENTRY_PATH . &quot;/$postID&quot;;
-
-                return $url;
-        }
-
-        /**
-         * Display entry URL.
-         *
-         * @since 2.7.0
-         *
-         * @param int $postID Post ID.
-         */
-        function the_entry_url($postID = null) {
-                echo $this-&gt;get_entry_url($postID);
-        }
-
-        /**
-         * Retrieve media URL.
-         *
-         * @since 2.2.0
-         *
-         * @param int $postID Post ID.
-         * @return string
-         */
-        function get_media_url($postID = null) {
-                if (!isset($postID)) {
-                        global $post;
-                        $postID = (int) $post-&gt;ID;
-                }
-
-                $url = $this-&gt;app_base . $this-&gt;MEDIA_SINGLE_PATH .&quot;/file/$postID&quot;;
-
-                return $url;
-        }
-
-        /**
-         * Display the media URL.
-         *
-         * @since 2.2.0
-         *
-         * @param int $postID Post ID.
-         */
-        function the_media_url($postID = null) {
-                echo $this-&gt;get_media_url($postID);
-        }
-
-        /**
-         * Set the current entry to post ID.
-         *
-         * @since 2.2.0
-         *
-         * @param int $postID Post ID.
-         */
-        function set_current_entry($postID) {
-                global $entry;
-
-                if (!isset($postID)) {
-                        // $this-&gt;bad_request();
-                        $this-&gt;not_found();
-                }
-
-                $entry = wp_get_single_post($postID,ARRAY_A);
-
-                if (!isset($entry) || !isset($entry['ID']))
-                        $this-&gt;not_found();
-
-                return;
-        }
-
-        /**
-         * Display posts XML.
-         *
-         * @since 2.2.0
-         *
-         * @param int $page Optional. Page ID.
-         * @param string $post_type Optional, default is 'post'. Post Type.
-         */
-        function get_posts($page = 1, $post_type = 'post') {
-                        $feed = $this-&gt;get_feed($page, $post_type);
-                        $this-&gt;output($feed);
-        }
-
-        /**
-         * Display attachment XML.
-         *
-         * @since 2.2.0
-         *
-         * @param int $page Page ID.
-         * @param string $post_type Optional, default is 'attachment'. Post type.
-         */
-        function get_attachments($page = 1, $post_type = 'attachment') {
-                $GLOBALS['post_type'] = $post_type;
-                $feed = $this-&gt;get_feed($page, $post_type);
-                $this-&gt;output($feed);
-        }
-
-        /**
-         * Retrieve feed XML.
-         *
-         * @since 2.2.0
-         *
-         * @param int $page Page ID.
-         * @param string $post_type Optional, default is post. Post type.
-         * @return string
-         */
-        function get_feed($page = 1, $post_type = 'post') {
-                global $post, $wp, $wp_query, $posts, $wpdb, $blog_id;
-                ob_start();
-
-                $this-&gt;ENTRY_PATH = $post_type;
-
-                if (!isset($page)) {
-                        $page = 1;
-                }
-                $page = (int) $page;
-
-                $count = get_option('posts_per_rss');
-
-                wp('posts_per_page=' . $count . '&amp;offset=' . ($count * ($page-1) . '&amp;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'];
-
-                $last_page = $wp_query-&gt;max_num_pages;
-                $next_page = (($page + 1) &gt; $last_page) ? null : $page + 1;
-                $prev_page = ($page - 1) &lt; 1 ? null : $page - 1;
-                $last_page = ((int)$last_page == 1 || (int)$last_page == 0) ? null : (int) $last_page;
-                $self_page = $page &gt; 1 ? $page : null;
-?&gt;&lt;feed xmlns=&quot;&lt;?php echo $this-&gt;ATOM_NS ?&gt;&quot; xmlns:app=&quot;&lt;?php echo $this-&gt;ATOMPUB_NS ?&gt;&quot; xml:lang=&quot;&lt;?php bloginfo_rss( 'language' ); ?&gt;&quot; &lt;?php do_action('app_ns'); ?&gt; &gt;
-&lt;id&gt;&lt;?php $this-&gt;the_entries_url() ?&gt;&lt;/id&gt;
-&lt;updated&gt;&lt;?php echo mysql2date('Y-m-d\TH:i:s\Z', get_lastpostmodified('GMT'), false); ?&gt;&lt;/updated&gt;
-&lt;title type=&quot;text&quot;&gt;&lt;?php bloginfo_rss('name') ?&gt;&lt;/title&gt;
-&lt;subtitle type=&quot;text&quot;&gt;&lt;?php bloginfo_rss(&quot;description&quot;) ?&gt;&lt;/subtitle&gt;
-&lt;link rel=&quot;first&quot; type=&quot;&lt;?php echo $this-&gt;ATOM_CONTENT_TYPE ?&gt;&quot; href=&quot;&lt;?php $this-&gt;the_entries_url() ?&gt;&quot; /&gt;
-&lt;?php if (isset($prev_page)): ?&gt;
-&lt;link rel=&quot;previous&quot; type=&quot;&lt;?php echo $this-&gt;ATOM_CONTENT_TYPE ?&gt;&quot; href=&quot;&lt;?php $this-&gt;the_entries_url($prev_page) ?&gt;&quot; /&gt;
-&lt;?php endif; ?&gt;
-&lt;?php if (isset($next_page)): ?&gt;
-&lt;link rel=&quot;next&quot; type=&quot;&lt;?php echo $this-&gt;ATOM_CONTENT_TYPE ?&gt;&quot; href=&quot;&lt;?php $this-&gt;the_entries_url($next_page) ?&gt;&quot; /&gt;
-&lt;?php endif; ?&gt;
-&lt;link rel=&quot;last&quot; type=&quot;&lt;?php echo $this-&gt;ATOM_CONTENT_TYPE ?&gt;&quot; href=&quot;&lt;?php $this-&gt;the_entries_url($last_page) ?&gt;&quot; /&gt;
-&lt;link rel=&quot;self&quot; type=&quot;&lt;?php echo $this-&gt;ATOM_CONTENT_TYPE ?&gt;&quot; href=&quot;&lt;?php $this-&gt;the_entries_url($self_page) ?&gt;&quot; /&gt;
-&lt;rights type=&quot;text&quot;&gt;Copyright &lt;?php echo date('Y'); ?&gt;&lt;/rights&gt;
-&lt;?php do_action('app_head'); ?&gt;
-&lt;?php if ( have_posts() ) {
-                        while ( have_posts() ) {
-                                the_post();
-                                $this-&gt;echo_entry();
-                        }
-                }
-?&gt;&lt;/feed&gt;
-&lt;?php
-                $feed = ob_get_contents();
-                ob_end_clean();
-                return $feed;
-        }
-
-        /**
-         * Display entry XML.
-         *
-         * @since 2.2.0
-         *
-         * @param int $postID Post ID.
-         * @param string $post_type Optional, default is post. Post type.
-         * @return string.
-         */
-        function get_entry($postID, $post_type = 'post') {
-                ob_start();
-                switch($post_type) {
-                        case 'post':
-                                $varname = 'p';
-                                break;
-                        case 'attachment':
-                                $this-&gt;ENTRY_PATH = 'attachment';
-                                $varname = 'attachment_id';
-                                break;
-                }
-                query_posts($varname . '=' . $postID);
-                if ( have_posts() ) {
-                        while ( have_posts() ) {
-                                the_post();
-                                $this-&gt;echo_entry();
-                                $entry = ob_get_contents();
-                                break;
-                        }
-                }
-                ob_end_clean();
-
-                return $entry;
-        }
-
-        /**
-         * Display post content XML.
-         *
-         * @since 2.3.0
-         */
-        function echo_entry() { ?&gt;
-&lt;entry xmlns=&quot;&lt;?php echo $this-&gt;ATOM_NS ?&gt;&quot;
-       xmlns:app=&quot;&lt;?php echo $this-&gt;ATOMPUB_NS ?&gt;&quot; xml:lang=&quot;&lt;?php bloginfo_rss( 'language' ); ?&gt;&quot;&gt;
-        &lt;id&gt;&lt;?php the_guid( $GLOBALS['post']-&gt;ID ); ?&gt;&lt;/id&gt;
-&lt;?php list($content_type, $content) = prep_atom_text_construct(get_the_title()); ?&gt;
-        &lt;title type=&quot;&lt;?php echo $content_type ?&gt;&quot;&gt;&lt;?php echo $content ?&gt;&lt;/title&gt;
-        &lt;updated&gt;&lt;?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?&gt;&lt;/updated&gt;
-        &lt;published&gt;&lt;?php echo get_post_time('Y-m-d\TH:i:s\Z', true); ?&gt;&lt;/published&gt;
-        &lt;app:edited&gt;&lt;?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?&gt;&lt;/app:edited&gt;
-        &lt;app:control&gt;
-                &lt;app:draft&gt;&lt;?php echo ($GLOBALS['post']-&gt;post_status == 'draft' ? 'yes' : 'no') ?&gt;&lt;/app:draft&gt;
-        &lt;/app:control&gt;
-        &lt;author&gt;
-                &lt;name&gt;&lt;?php the_author()?&gt;&lt;/name&gt;
-&lt;?php if ( get_the_author_meta('url') &amp;&amp; get_the_author_meta('url') != 'http://' ) { ?&gt;
-                &lt;uri&gt;&lt;?php the_author_meta('url') ?&gt;&lt;/uri&gt;
-&lt;?php } ?&gt;
-        &lt;/author&gt;
-&lt;?php if ($GLOBALS['post']-&gt;post_type == 'attachment') { ?&gt;
-        &lt;link rel=&quot;edit-media&quot; href=&quot;&lt;?php $this-&gt;the_media_url() ?&gt;&quot; /&gt;
-        &lt;content type=&quot;&lt;?php echo $GLOBALS['post']-&gt;post_mime_type ?&gt;&quot; src=&quot;&lt;?php the_guid() ; ?&gt;&quot;/&gt;
-&lt;?php } else { ?&gt;
-        &lt;link href=&quot;&lt;?php the_permalink_rss() ?&gt;&quot; /&gt;
-&lt;?php if ( strlen( $GLOBALS['post']-&gt;post_content ) ) :
-list($content_type, $content) = prep_atom_text_construct(get_the_content()); ?&gt;
-        &lt;content type=&quot;&lt;?php echo $content_type ?&gt;&quot;&gt;&lt;?php echo $content ?&gt;&lt;/content&gt;
-&lt;?php endif; ?&gt;
-&lt;?php } ?&gt;
-        &lt;link rel=&quot;edit&quot; href=&quot;&lt;?php $this-&gt;the_entry_url() ?&gt;&quot; /&gt;
-        &lt;?php the_category_rss( 'atom' ); ?&gt;
-&lt;?php list($content_type, $content) = prep_atom_text_construct(get_the_excerpt()); ?&gt;
-        &lt;summary type=&quot;&lt;?php echo $content_type ?&gt;&quot;&gt;&lt;?php echo $content ?&gt;&lt;/summary&gt;
-        &lt;?php do_action('app_entry'); ?&gt;
-&lt;/entry&gt;
-&lt;?php }
-
-        /**
-         * Set 'OK' (200) status header.
-         *
-         * @since 2.2.0
-         */
-        function ok() {
-                header('Content-Type: text/plain');
-                status_header('200');
-                exit;
-        }
-
-        /**
-         * Set 'No Content' (204) status header.
-         *
-         * @since 2.2.0
-         */
-        function no_content() {
-                header('Content-Type: text/plain');
-                status_header('204');
-                echo &quot;Moved to Trash.&quot;;
-                exit;
-        }
-
-        /**
-         * Display 'Internal Server Error' (500) status header.
-         *
-         * @since 2.2.0
-         *
-         * @param string $msg Optional. Status string.
-         */
-        function internal_error($msg = 'Internal Server Error') {
-                header('Content-Type: text/plain');
-                status_header('500');
-                echo $msg;
-                exit;
-        }
-
-        /**
-         * Set 'Bad Request' (400) status header.
-         *
-         * @since 2.2.0
-         */
-        function bad_request() {
-                header('Content-Type: text/plain');
-                status_header('400');
-                exit;
-        }
-
-        /**
-         * Set 'Length Required' (411) status header.
-         *
-         * @since 2.2.0
-         */
-        function length_required() {
-                header(&quot;HTTP/1.1 411 Length Required&quot;);
-                header('Content-Type: text/plain');
-                status_header('411');
-                exit;
-        }
-
-        /**
-         * Set 'Unsupported Media Type' (415) status header.
-         *
-         * @since 2.2.0
-         */
-        function invalid_media() {
-                header(&quot;HTTP/1.1 415 Unsupported Media Type&quot;);
-                header('Content-Type: text/plain');
-                exit;
-        }
-
-        /**
-         * Set 'Forbidden' (403) status header.
-         *
-         * @since 2.6.0
-         */
-        function forbidden($reason='') {
-                header('Content-Type: text/plain');
-                status_header('403');
-                echo $reason;
-                exit;
-        }
-
-        /**
-         * Set 'Not Found' (404) status header.
-         *
-         * @since 2.2.0
-         */
-        function not_found() {
-                header('Content-Type: text/plain');
-                status_header('404');
-                exit;
-        }
-
-        /**
-         * Set 'Not Allowed' (405) status header.
-         *
-         * @since 2.2.0
-         */
-        function not_allowed($allow) {
-                header('Allow: ' . join(',', $allow));
-                status_header('405');
-                exit;
-        }
-
-        /**
-         * Display Redirect (302) content and set status headers.
-         *
-         * @since 2.3.0
-         */
-        function redirect($url) {
-                $escaped_url = esc_attr($url);
-                $content = &lt;&lt;&lt;EOD
-&lt;!DOCTYPE HTML PUBLIC &quot;-//IETF//DTD HTML 2.0//EN&quot;&gt;
-&lt;html&gt;
-  &lt;head&gt;
-    &lt;title&gt;302 Found&lt;/title&gt;
-  &lt;/head&gt;
-&lt;body&gt;
-  &lt;h1&gt;Found&lt;/h1&gt;
-  &lt;p&gt;The document has moved &lt;a href=&quot;$escaped_url&quot;&gt;here&lt;/a&gt;.&lt;/p&gt;
-  &lt;/body&gt;
-&lt;/html&gt;
-
-EOD;
-                header('HTTP/1.1 302 Moved');
-                header('Content-Type: text/html');
-                header('Location: ' . $url);
-                echo $content;
-                exit;
-
-        }
-
-        /**
-         * Set 'Client Error' (400) status header.
-         *
-         * @since 2.2.0
-         */
-        function client_error($msg = 'Client Error') {
-                header('Content-Type: text/plain');
-                status_header('400');
-                exit;
-        }
-
-        /**
-         * Set created status headers (201).
-         *
-         * Sets the 'content-type', 'content-location', and 'location'.
-         *
-         * @since 2.2.0
-         */
-        function created($post_ID, $content, $post_type = 'post') {
-                $edit = $this-&gt;get_entry_url($post_ID);
-                switch($post_type) {
-                        case 'post':
-                                $ctloc = $this-&gt;get_entry_url($post_ID);
-                                break;
-                        case 'attachment':
-                                $edit = $this-&gt;app_base . &quot;attachments/$post_ID&quot;;
-                                break;
-                }
-                header(&quot;Content-Type: $this-&gt;ATOM_CONTENT_TYPE&quot;);
-                if (isset($ctloc))
-                        header('Content-Location: ' . $ctloc);
-                header('Location: ' . $edit);
-                status_header('201');
-                echo $content;
-                exit;
-        }
-
-        /**
-         * Set 'Auth Required' (401) headers.
-         *
-         * @since 2.2.0
-         *
-         * @param string $msg Status header content and HTML content.
-         */
-        function auth_required($msg) {
-                nocache_headers();
-                header('WWW-Authenticate: Basic realm=&quot;WordPress Atom Protocol&quot;');
-                header(&quot;HTTP/1.1 401 $msg&quot;);
-                header('Status: 401 ' . $msg);
-                header('Content-Type: text/html');
-                $content = &lt;&lt;&lt;EOD
-&lt;!DOCTYPE HTML PUBLIC &quot;-//IETF//DTD HTML 2.0//EN&quot;&gt;
-&lt;html&gt;
-  &lt;head&gt;
-    &lt;title&gt;401 Unauthorized&lt;/title&gt;
-  &lt;/head&gt;
-&lt;body&gt;
-    &lt;h1&gt;401 Unauthorized&lt;/h1&gt;
-    &lt;p&gt;$msg&lt;/p&gt;
-  &lt;/body&gt;
-&lt;/html&gt;
-
-EOD;
-                echo $content;
-                exit;
-        }
-
-        /**
-         * Display XML and set headers with content type.
-         *
-         * @since 2.2.0
-         *
-         * @param string $xml Display feed content.
-         * @param string $ctype Optional, default is 'atom+xml'. Feed content type.
-         */
-        function output($xml, $ctype = 'application/atom+xml') {
-                        status_header('200');
-                        $xml = '&lt;?xml version=&quot;1.0&quot; encoding=&quot;' . strtolower(get_option('blog_charset')) . '&quot;?&gt;'.&quot;\n&quot;.$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-&gt;do_output)
-                                echo $xml;
-                        exit;
-        }
-
-        /**
-         * Sanitize content for database usage.
-         *
-         * @since 2.2.0
-         *
-         * @param array $array Sanitize array and multi-dimension array.
-         */
-        function escape(&amp;$array) {
-                global $wpdb;
-
-                foreach ($array as $k =&gt; $v) {
-                                if (is_array($v)) {
-                                                $this-&gt;escape($array[$k]);
-                                } else if (is_object($v)) {
-                                                //skip
-                                } else {
-                                                $array[$k] = $wpdb-&gt;escape($v);
-                                }
-                }
-        }
-
-        /**
-         * Access credential through various methods and perform login.
-         *
-         * @since 2.2.0
-         *
-         * @return bool
-         */
-        function authenticate() {
-                // 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)));
-                } else if (isset($_SERVER['REDIRECT_REMOTE_USER'])) {
-                        // Workaround for setups that do not forward HTTP_AUTHORIZATION
-                        // See http://trac.wordpress.org/ticket/7361
-                        list($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']) =
-                                explode(':', base64_decode(substr($_SERVER['REDIRECT_REMOTE_USER'], 6)));
-                }
-
-                // If Basic Auth is working...
-                if (isset($_SERVER['PHP_AUTH_USER']) &amp;&amp; isset($_SERVER['PHP_AUTH_PW'])) {
-                        $user = wp_authenticate($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']);
-                        if ( $user &amp;&amp; !is_wp_error($user) ) {
-                                wp_set_current_user($user-&gt;ID);
-                                return true;
-                        }
-                }
-
-                return false;
-        }
-
-        /**
-         * Retrieve accepted content types.
-         *
-         * @since 2.2.0
-         *
-         * @param array $types Optional. Content Types.
-         * @return string
-         */
-        function get_accepted_content_type($types = null) {
-
-                if (!isset($types)) {
-                        $types = $this-&gt;media_content_types;
-                }
-
-                if (!isset($_SERVER['CONTENT_LENGTH']) || !isset($_SERVER['CONTENT_TYPE'])) {
-                        $this-&gt;length_required();
-                }
-
-                $type = $_SERVER['CONTENT_TYPE'];
-                list($type,$subtype) = explode('/',$type);
-                list($subtype) = explode(&quot;;&quot;,$subtype); // strip MIME parameters
-
-                foreach($types as $t) {
-                        list($acceptedType,$acceptedSubtype) = explode('/',$t);
-                        if ($acceptedType == '*' || $acceptedType == $type) {
-                                if ($acceptedSubtype == '*' || $acceptedSubtype == $subtype)
-                                        return $type . &quot;/&quot; . $subtype;
-                        }
-                }
-
-                $this-&gt;invalid_media();
-        }
-
-        /**
-         * Process conditionals for posts.
-         *
-         * @since 2.2.0
-         */
-        function process_conditionals() {
-
-                if (empty($this-&gt;params)) return;
-                if ($_SERVER['REQUEST_METHOD'] == 'DELETE') return;
-
-                switch($this-&gt;params[0]) {
-                        case $this-&gt;ENTRY_PATH:
-                                global $post;
-                                $post = wp_get_single_post($this-&gt;params[1]);
-                                $wp_last_modified = get_post_modified_time('D, d M Y H:i:s', true);
-                                $post = null;
-                                break;
-                        case $this-&gt;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(&quot;Last-Modified: $wp_last_modified&quot;);
-                @header(&quot;ETag: $wp_etag&quot;);
-
-                // Support for Conditional GET
-                if (isset($_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 &amp;&amp; $client_etag) ?
-                (($client_modified_timestamp &gt;= $wp_modified_timestamp) &amp;&amp; ($client_etag == $wp_etag)) :
-                (($client_modified_timestamp &gt;= $wp_modified_timestamp) || ($client_etag == $wp_etag)) ) {
-                        status_header( 304 );
-                        exit;
-                }
-        }
-
-        /**
-         * Convert RFC3339 time string to timestamp.
-         *
-         * @since 2.3.0
-         *
-         * @param string $str String to time.
-         * @return bool|int false if format is incorrect.
-         */
-        function rfc3339_str2time($str) {
-
-                $match = false;
-                if (!preg_match(&quot;/(\d{4}-\d{2}-\d{2})T(\d{2}\:\d{2}\:\d{2})\.?\d{0,3}(Z|[+-]+\d{2}\:\d{2})/&quot;, $str, $match))
-                        return false;
-
-                if ($match[3] == 'Z')
-                        $match[3] = '+0000';
-
-                return strtotime($match[1] . &quot; &quot; . $match[2] . &quot; &quot; . $match[3]);
-        }
-
-        /**
-         * Retrieve published time to display in XML.
-         *
-         * @since 2.3.0
-         *
-         * @param string $published Time string.
-         * @return string
-         */
-        function get_publish_time($published) {
-
-                $pubtime = $this-&gt;rfc3339_str2time($published);
-
-                if (!$pubtime) {
-                        return array(current_time('mysql'),current_time('mysql',1));
-                } else {
-                        return array(date(&quot;Y-m-d H:i:s&quot;, $pubtime), gmdate(&quot;Y-m-d H:i:s&quot;, $pubtime));
-                }
-        }
-
-}
-
-/**
- * AtomServer
- * @var AtomServer
- * @global object $server
- */
-$server = new AtomServer();
-$server-&gt;handle_request();
</del><ins>+// Handle the request
+$wp_atom_server-&gt;handle_request();
</ins></span></pre></div>
<a id="trunkwpincludesclasswpatomserverphpfromrev20059trunkwpappphp"></a>
<div class="copfile"><h4>Copied: trunk/wp-includes/class-wp-atom-server.php (from rev 20059, trunk/wp-app.php) (0 => 20062)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-includes/class-wp-atom-server.php                                (rev 0)
+++ trunk/wp-includes/class-wp-atom-server.php        2012-03-01 21:15:44 UTC (rev 20062)
</span><span class="lines">@@ -0,0 +1,1508 @@
</span><ins>+&lt;?php
+
+/**
+ * WordPress AtomPub API implementation.
+ *
+ * @package WordPress
+ * @subpackage Publishing
+ * @since 2.2.0
+ */
+class wp_atom_server {
+
+        /**
+         * ATOM content type.
+         *
+         * @since 2.2.0
+         * @var string
+         */
+        var $ATOM_CONTENT_TYPE = 'application/atom+xml';
+
+        /**
+         * Categories ATOM content type.
+         *
+         * @since 2.2.0
+         * @var string
+         */
+        var $CATEGORIES_CONTENT_TYPE = 'application/atomcat+xml';
+
+        /**
+         * Service ATOM content type.
+         *
+         * @since 2.3.0
+         * @var string
+         */
+        var $SERVICE_CONTENT_TYPE = 'application/atomsvc+xml';
+
+        /**
+         * ATOM XML namespace.
+         *
+         * @since 2.3.0
+         * @var string
+         */
+        var $ATOM_NS = 'http://www.w3.org/2005/Atom';
+
+        /**
+         * ATOMPUB XML namespace.
+         *
+         * @since 2.3.0
+         * @var string
+         */
+        var $ATOMPUB_NS = 'http://www.w3.org/2007/app';
+
+        /**
+         * Entries path.
+         *
+         * @since 2.2.0
+         * @var string
+         */
+        var $ENTRIES_PATH = &quot;posts&quot;;
+
+        /**
+         * Categories path.
+         *
+         * @since 2.2.0
+         * @var string
+         */
+        var $CATEGORIES_PATH = &quot;categories&quot;;
+
+        /**
+         * Media path.
+         *
+         * @since 2.2.0
+         * @var string
+         */
+        var $MEDIA_PATH = &quot;attachments&quot;;
+
+        /**
+         * Entry path.
+         *
+         * @since 2.2.0
+         * @var string
+         */
+        var $ENTRY_PATH = &quot;post&quot;;
+
+        /**
+         * Service path.
+         *
+         * @since 2.2.0
+         * @var string
+         */
+        var $SERVICE_PATH = &quot;service&quot;;
+
+        /**
+         * Media single path.
+         *
+         * @since 2.2.0
+         * @var string
+         */
+        var $MEDIA_SINGLE_PATH = &quot;attachment&quot;;
+
+        /**
+         * ATOMPUB parameters.
+         *
+         * @since 2.2.0
+         * @var array
+         */
+        var $params = array();
+
+        /**
+         * Supported ATOMPUB media types.
+         *
+         * @since 2.3.0
+         * @var array
+         */
+        var $media_content_types = array('image/*','audio/*','video/*');
+
+        /**
+         * ATOMPUB content type(s).
+         *
+         * @since 2.2.0
+         * @var array
+         */
+        var $atom_content_types = array('application/atom+xml');
+
+        /**
+         * ATOMPUB methods.
+         *
+         * @since 2.2.0
+         * @var unknown_type
+         */
+        var $selectors = array();
+
+        /**
+         * Whether to do output.
+         *
+         * Support for head.
+         *
+         * @since 2.2.0
+         * @var bool
+         */
+        var $do_output = true;
+
+        /**
+         * Constructor - Sets up object properties.
+         *
+         * @since 2.2.0
+         * @return AtomServer
+         */
+        function __construct() {
+
+                $var_by_ref = explode( '/', $_SERVER['SCRIPT_NAME'] );
+                $this-&gt;script_name = array_pop( $var_by_ref );
+                $this-&gt;app_base = site_url( $this-&gt;script_name . '/' );
+
+                $this-&gt;selectors = array(
+                        '@/service$@' =&gt;
+                                array('GET' =&gt; 'get_service'),
+                        '@/categories$@' =&gt;
+                                array('GET' =&gt; 'get_categories_xml'),
+                        '@/post/(\d+)$@' =&gt;
+                                array('GET' =&gt; 'get_post',
+                                                'PUT' =&gt; 'put_post',
+                                                'DELETE' =&gt; 'delete_post'),
+                        '@/posts/?(\d+)?$@' =&gt;
+                                array('GET' =&gt; 'get_posts',
+                                                'POST' =&gt; 'create_post'),
+                        '@/attachments/?(\d+)?$@' =&gt;
+                                array('GET' =&gt; 'get_attachment',
+                                                'POST' =&gt; 'create_attachment'),
+                        '@/attachment/file/(\d+)$@' =&gt;
+                                array('GET' =&gt; 'get_file',
+                                                'PUT' =&gt; 'put_file',
+                                                'DELETE' =&gt; 'delete_file'),
+                        '@/attachment/(\d+)$@' =&gt;
+                                array('GET' =&gt; 'get_attachment',
+                                                'PUT' =&gt; 'put_attachment',
+                                                'DELETE' =&gt; 'delete_attachment'),
+                );
+
+                add_filter( 'wp_die_handler', array( $this, 'return_atom_die_handler' ) );
+        }
+
+        /**
+         * Override die handler
+         * @return callback
+         */
+        public function return_atom_die_handler() {
+                return array( $this, 'atom_die_handler' );
+        }
+
+        /**
+         * Die with a message.  Only accept strings, no WP_Error objects yet
+         * @param string $message
+         * @return void
+         */
+        public function atom_die_handler( $message ) {
+                if ( is_scalar( $message ) )
+                        die( (string) $message );
+                die();
+        }
+
+        /**
+         * Handle ATOMPUB request.
+         *
+         * @since 2.2.0
+         */
+        function handle_request() {
+
+                if ( !empty( $_SERVER['ORIG_PATH_INFO'] ) )
+                        $path = $_SERVER['ORIG_PATH_INFO'];
+                else
+                        $path = $_SERVER['PATH_INFO'];
+
+                $method = $_SERVER['REQUEST_METHOD'];
+
+                $this-&gt;process_conditionals();
+                //$this-&gt;process_conditionals();
+
+                // exception case for HEAD (treat exactly as GET, but don't output)
+                if ($method == 'HEAD') {
+                        $this-&gt;do_output = false;
+                        $method = 'GET';
+                }
+
+                // redirect to /service in case no path is found.
+                if (strlen($path) == 0 || $path == '/')
+                        $this-&gt;redirect($this-&gt;get_service_url());
+
+                // check to see if AtomPub is enabled
+                if ( !get_option( 'enable_app' ) )
+                        $this-&gt;forbidden( sprintf( __( 'AtomPub services are disabled on this site. An admin user can enable them at %s' ), admin_url('options-writing.php') ) );
+
+                // dispatch
+                foreach ( $this-&gt;selectors as $regex =&gt; $funcs ) {
+                        if ( preg_match($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-&gt;authenticate() ) {
+                                                $this-&gt;auth_required('Credentials required.');
+                                        }
+
+                                        array_shift($matches);
+                                        call_user_func_array(array($this,$funcs[$method]), $matches);
+                                        wp_die();
+                                } else {
+                                        // only allow what we have handlers for...
+                                        $this-&gt;not_allowed(array_keys($funcs));
+                                }
+                        }
+                }
+
+                // oops, nothing found
+                $this-&gt;not_found();
+        }
+
+        /**
+         * Retrieve XML for ATOMPUB service.
+         *
+         * @since 2.2.0
+         */
+        function get_service() {
+
+                if ( !current_user_can( 'edit_posts' ) )
+                        $this-&gt;auth_required( __( 'Sorry, you do not have the right to access this site.' ) );
+
+                $entries_url = esc_attr($this-&gt;get_entries_url());
+                $categories_url = esc_attr($this-&gt;get_categories_url());
+                $media_url = esc_attr($this-&gt;get_attachments_url());
+                $accepted_media_types = '';
+                foreach ($this-&gt;media_content_types as $med) {
+                        $accepted_media_types = $accepted_media_types . &quot;&lt;accept&gt;&quot; . $med . &quot;&lt;/accept&gt;&quot;;
+                }
+                $atom_prefix=&quot;atom&quot;;
+                $atom_blogname = get_bloginfo('name');
+                $service_doc = &lt;&lt;&lt;EOD
+&lt;service xmlns=&quot;$this-&gt;ATOMPUB_NS&quot; xmlns:$atom_prefix=&quot;$this-&gt;ATOM_NS&quot;&gt;
+  &lt;workspace&gt;
+    &lt;$atom_prefix:title&gt;$atom_blogname Workspace&lt;/$atom_prefix:title&gt;
+    &lt;collection href=&quot;$entries_url&quot;&gt;
+      &lt;$atom_prefix:title&gt;$atom_blogname Posts&lt;/$atom_prefix:title&gt;
+      &lt;accept&gt;$this-&gt;ATOM_CONTENT_TYPE;type=entry&lt;/accept&gt;
+      &lt;categories href=&quot;$categories_url&quot; /&gt;
+    &lt;/collection&gt;
+    &lt;collection href=&quot;$media_url&quot;&gt;
+      &lt;$atom_prefix:title&gt;$atom_blogname Media&lt;/$atom_prefix:title&gt;
+      $accepted_media_types
+    &lt;/collection&gt;
+  &lt;/workspace&gt;
+&lt;/service&gt;
+
+EOD;
+
+                $this-&gt;output($service_doc, $this-&gt;SERVICE_CONTENT_TYPE);
+        }
+
+        /**
+         * Retrieve categories list in XML format.
+         *
+         * @since 2.2.0
+         */
+        function get_categories_xml() {
+
+                if ( !current_user_can( 'edit_posts' ) )
+                        $this-&gt;auth_required( __( 'Sorry, you do not have the right to access this site.' ) );
+
+                $home = esc_attr(get_bloginfo_rss('url'));
+
+                $categories = &quot;&quot;;
+                $cats = get_categories(array('hierarchical' =&gt; 0, 'hide_empty' =&gt; 0));
+                foreach ( (array) $cats as $cat ) {
+                        $categories .= &quot;    &lt;category term=\&quot;&quot; . esc_attr($cat-&gt;name) . &quot;\&quot; /&gt;\n&quot;;
+                }
+                $output = &lt;&lt;&lt;EOD
+&lt;app:categories xmlns:app=&quot;$this-&gt;ATOMPUB_NS&quot;
+        xmlns=&quot;$this-&gt;ATOM_NS&quot;
+        fixed=&quot;yes&quot; scheme=&quot;$home&quot;&gt;
+        $categories
+&lt;/app:categories&gt;
+EOD;
+                $this-&gt;output($output, $this-&gt;CATEGORIES_CONTENT_TYPE);
+        }
+
+        /**
+         * Create new post.
+         *
+         * @since 2.2.0
+         */
+        function create_post() {
+                global $user_ID;
+                $this-&gt;get_accepted_content_type($this-&gt;atom_content_types);
+
+                $parser = new AtomParser();
+                if ( !$parser-&gt;parse() )
+                        $this-&gt;client_error();
+
+                $entry = array_pop($parser-&gt;feed-&gt;entries);
+
+                $catnames = array();
+                if ( !empty( $entry-&gt;categories ) ) {
+                        foreach ( $entry-&gt;categories as $cat ) {
+                                array_push($catnames, $cat[&quot;term&quot;]);
+                        }
+                }
+
+                $wp_cats = get_categories(array('hide_empty' =&gt; false));
+
+                $post_category = array();
+
+                foreach ( $wp_cats as $cat ) {
+                        if ( in_array($cat-&gt;name, $catnames) )
+                                array_push($post_category, $cat-&gt;term_id);
+                }
+
+                $publish = ! ( isset( $entry-&gt;draft ) &amp;&amp; 'yes' == trim( $entry-&gt;draft ) );
+
+                $cap = ($publish) ? 'publish_posts' : 'edit_posts';
+
+                if ( !current_user_can($cap) )
+                        $this-&gt;auth_required(__('Sorry, you do not have the right to edit/publish new posts.'));
+
+                $blog_ID = get_current_blog_id();
+                $post_status = ($publish) ? 'publish' : 'draft';
+                $post_author = (int) $user_ID;
+
+                $post_title   = '';
+                $post_content = '';
+                $post_excerpt = '';
+                $pubtimes     = '';
+                
+                if ( isset( $entry-&gt;title ) &amp;&amp; is_array( $entry-&gt;title ) &amp;&amp; !empty( $entry-&gt;title[1] ) )
+                        $post_title = (string) $entry-&gt;title[1];
+                if ( isset( $entry-&gt;content ) &amp;&amp; is_array( $entry-&gt;content ) &amp;&amp; !empty( $entry-&gt;content[1] ) )
+                        $post_content = (string) $entry-&gt;content[1];
+                if ( isset( $entry-&gt;summary ) &amp;&amp; is_array( $entry-&gt;summary ) &amp;&amp; !empty( $entry-&gt;summary[1] ) )
+                        $post_excerpt = (string) $entry-&gt;summary[1];
+                if ( !empty( $entry-&gt;published ) )
+                        $pubtimes = (string) $entry-&gt;published;
+                
+                $pubtimes = $this-&gt;get_publish_time( $pubtimes );
+
+                $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');
+
+                $this-&gt;escape($post_data);
+
+                $postID = wp_insert_post($post_data);
+                if ( is_wp_error( $postID ) )
+                        $this-&gt;internal_error($postID-&gt;get_error_message());
+
+                if ( !$postID )
+                        $this-&gt;internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
+
+                // getting warning here about unable to set headers
+                // because something in the cache is printing to the buffer
+                // could we clean up wp_set_post_categories or cache to not print
+                // this could affect our ability to send back the right headers
+                @wp_set_post_categories($postID, $post_category);
+
+                do_action( 'atompub_create_post', $postID, $entry );
+
+                $output = $this-&gt;get_entry($postID);
+
+                $this-&gt;created($postID, $output);
+        }
+
+        /**
+         * Retrieve post.
+         *
+         * @since 2.2.0
+         *
+         * @param int $postID Post ID.
+         */
+        function get_post($postID) {
+                global $entry;
+
+                if ( !current_user_can( 'edit_post', $postID ) )
+                        $this-&gt;auth_required( __( 'Sorry, you do not have the right to access this post.' ) );
+
+                $this-&gt;set_current_entry($postID);
+                $output = $this-&gt;get_entry($postID);
+                $this-&gt;output($output);
+
+        }
+
+        /**
+         * Update post.
+         *
+         * @since 2.2.0
+         *
+         * @param int $postID Post ID.
+         */
+        function put_post($postID) {
+                // checked for valid content-types (atom+xml)
+                // quick check and exit
+                $this-&gt;get_accepted_content_type($this-&gt;atom_content_types);
+
+                $parser = new AtomParser();
+                if ( !$parser-&gt;parse() )
+                        $this-&gt;bad_request();
+
+                $parsed = array_pop($parser-&gt;feed-&gt;entries);
+
+                // check for not found
+                global $entry;
+                $this-&gt;set_current_entry($postID);
+
+                if ( !current_user_can('edit_post', $entry['ID']) )
+                        $this-&gt;auth_required(__('Sorry, you do not have the right to edit this post.'));
+
+                $publish = ! ( isset($parsed-&gt;draft) &amp;&amp; 'yes' == trim($parsed-&gt;draft) );
+                $post_status = ($publish) ? 'publish' : 'draft';
+
+                extract($entry);
+
+                $post_title = $parsed-&gt;title[1];
+                $post_content = $parsed-&gt;content[1];
+                $post_excerpt = $parsed-&gt;summary[1];
+                $pubtimes = $this-&gt;get_publish_time($entry-&gt;published);
+                $post_date = $pubtimes[0];
+                $post_date_gmt = $pubtimes[1];
+                $pubtimes = $this-&gt;get_publish_time($parsed-&gt;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');
+                $this-&gt;escape($postdata);
+
+                $result = wp_update_post($postdata);
+
+                if ( !$result )
+                        $this-&gt;internal_error(__('For some strange yet very annoying reason, this post could not be edited.'));
+
+                do_action( 'atompub_put_post', $ID, $parsed );
+
+                $this-&gt;ok();
+        }
+
+        /**
+         * Remove post.
+         *
+         * @since 2.2.0
+         *
+         * @param int $postID Post ID.
+         */
+        function delete_post($postID) {
+
+                // check for not found
+                global $entry;
+                $this-&gt;set_current_entry($postID);
+
+                if ( !current_user_can('edit_post', $postID) )
+                        $this-&gt;auth_required(__('Sorry, you do not have the right to delete this post.'));
+
+                if ( $entry['post_type'] == 'attachment' ) {
+                        $this-&gt;delete_attachment($postID);
+                } else {
+                        $result = wp_delete_post($postID);
+
+                        if ( !$result ) {
+                                $this-&gt;internal_error(__('For some strange yet very annoying reason, this post could not be deleted.'));
+                        }
+
+                        $this-&gt;ok();
+                }
+
+        }
+
+        /**
+         * Retrieve attachment.
+         *
+         * @since 2.2.0
+         *
+         * @param int $postID Optional. Post ID.
+         */
+        function get_attachment($postID = null) {
+                if ( !current_user_can( 'upload_files' ) )
+                        $this-&gt;auth_required( __( 'Sorry, you do not have permission to upload files.' ) );
+
+                if ( !isset($postID) ) {
+                        $this-&gt;get_attachments();
+                } else {
+                        $this-&gt;set_current_entry($postID);
+                        $output = $this-&gt;get_entry($postID, 'attachment');
+                        $this-&gt;output($output);
+                }
+        }
+
+        /**
+         * Create new attachment.
+         *
+         * @since 2.2.0
+         */
+        function create_attachment() {
+
+                $type = $this-&gt;get_accepted_content_type();
+
+                if ( !current_user_can('upload_files') )
+                        $this-&gt;auth_required(__('You do not have permission to upload files.'));
+
+                $fp = fopen(&quot;php://input&quot;, &quot;rb&quot;);
+                $bits = null;
+                while ( !feof($fp) ) {
+                        $bits .= fread($fp, 4096);
+                }
+                fclose($fp);
+
+                $slug = '';
+                if ( isset( $_SERVER['HTTP_SLUG'] ) )
+                        $slug = $_SERVER['HTTP_SLUG'];
+                elseif ( isset( $_SERVER['HTTP_TITLE'] ) )
+                        $slug = $_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'] );
+                $slug = sanitize_file_name( &quot;$slug.$ext&quot; );
+                $file = wp_upload_bits( $slug, null, $bits);
+
+                $url = $file['url'];
+                $file = $file['file'];
+
+                do_action('wp_create_file_in_uploads', $file); // replicate
+
+                // Construct the attachment array
+                $attachment = array(
+                        'post_title' =&gt; $slug,
+                        'post_content' =&gt; $slug,
+                        'post_status' =&gt; 'attachment',
+                        'post_parent' =&gt; 0,
+                        'post_mime_type' =&gt; $type,
+                        'guid' =&gt; $url
+                        );
+
+                // Save the data
+                $postID = wp_insert_attachment($attachment, $file);
+
+                if (!$postID)
+                        $this-&gt;internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
+
+                $output = $this-&gt;get_entry($postID, 'attachment');
+
+                $this-&gt;created($postID, $output, 'attachment');
+        }
+
+        /**
+         * Update attachment.
+         *
+         * @since 2.2.0
+         *
+         * @param int $postID Post ID.
+         */
+        function put_attachment($postID) {
+                // checked for valid content-types (atom+xml)
+                // quick check and exit
+                $this-&gt;get_accepted_content_type($this-&gt;atom_content_types);
+
+                $parser = new AtomParser();
+                if (!$parser-&gt;parse()) {
+                        $this-&gt;bad_request();
+                }
+
+                $parsed = array_pop($parser-&gt;feed-&gt;entries);
+
+                // check for not found
+                global $entry;
+                $this-&gt;set_current_entry($postID);
+
+                if ( !current_user_can('edit_post', $entry['ID']) )
+                        $this-&gt;auth_required(__('Sorry, you do not have the right to edit this post.'));
+
+                extract($entry);
+
+                $post_title = $parsed-&gt;title[1];
+                $post_content = $parsed-&gt;summary[1];
+                $pubtimes = $this-&gt;get_publish_time($parsed-&gt;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');
+                $this-&gt;escape($postdata);
+
+                $result = wp_update_post($postdata);
+
+                if ( !$result )
+                        $this-&gt;internal_error(__('For some strange yet very annoying reason, this post could not be edited.'));
+
+                $this-&gt;ok();
+        }
+
+        /**
+         * Remove attachment.
+         *
+         * @since 2.2.0
+         *
+         * @param int $postID Post ID.
+         */
+        function delete_attachment($postID) {
+
+                // check for not found
+                global $entry;
+                $this-&gt;set_current_entry($postID);
+
+                if ( !current_user_can('edit_post', $postID) )
+                        $this-&gt;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']) )
+                        $this-&gt;internal_error(__('Error occurred while accessing post metadata for file location.'));
+
+                // delete file
+                @unlink($location);
+
+                // delete attachment
+                $result = wp_delete_post($postID);
+
+                if ( !$result )
+                        $this-&gt;internal_error(__('For some strange yet very annoying reason, this post could not be deleted.'));
+
+                $this-&gt;ok();
+        }
+
+        /**
+         * Retrieve attachment from post.
+         *
+         * @since 2.2.0
+         *
+         * @param int $postID Post ID.
+         */
+        function get_file($postID) {
+
+                // check for not found
+                global $entry;
+                $this-&gt;set_current_entry($postID);
+
+                // then whether user can edit the specific post
+                if ( !current_user_can('edit_post', $postID) )
+                        $this-&gt;auth_required(__('Sorry, you do not have the right to edit this post.'));
+
+                $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
+                $location = get_option ('upload_path') . '/' . $location;
+                $filetype = wp_check_filetype($location);
+
+                if ( !isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']) )
+                        $this-&gt;internal_error(__('Error occurred while accessing post metadata for file location.'));
+
+                status_header('200');
+                header('Content-Type: ' . $entry['post_mime_type']);
+                header('Connection: close');
+
+                if ( $fp = fopen($location, &quot;rb&quot;) ) {
+                        status_header('200');
+                        header('Content-Type: ' . $entry['post_mime_type']);
+                        header('Connection: close');
+
+                        while ( !feof($fp) ) {
+                                echo fread($fp, 4096);
+                        }
+
+                        fclose($fp);
+                } else {
+                        status_header ('404');
+                }
+
+                wp_die();
+        }
+
+        /**
+         * Upload file to blog and add attachment to post.
+         *
+         * @since 2.2.0
+         *
+         * @param int $postID Post ID.
+         */
+        function put_file($postID) {
+
+                // first check if user can upload
+                if ( !current_user_can('upload_files') )
+                        $this-&gt;auth_required(__('You do not have permission to upload files.'));
+
+                // check for not found
+                global $entry;
+                $this-&gt;set_current_entry($postID);
+
+                // then whether user can edit the specific post
+                if ( !current_user_can('edit_post', $postID) )
+                        $this-&gt;auth_required(__('Sorry, you do not have the right to edit this post.'));
+
+                $upload_dir = wp_upload_dir( );
+                $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
+                $filetype = wp_check_filetype($location);
+
+                $location = &quot;{$upload_dir['basedir']}/{$location}&quot;;
+
+                if (!isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']))
+                        $this-&gt;internal_error(__('Error occurred while accessing post metadata for file location.'));
+
+                $fp = fopen(&quot;php://input&quot;, &quot;rb&quot;);
+                $localfp = fopen($location, &quot;w+&quot;);
+                while ( !feof($fp) ) {
+                        fwrite($localfp,fread($fp, 4096));
+                }
+                fclose($fp);
+                fclose($localfp);
+
+                $ID = $entry['ID'];
+                $pubtimes = $this-&gt;get_publish_time($entry-&gt;published);
+                $post_date = $pubtimes[0];
+                $post_date_gmt = $pubtimes[1];
+                $pubtimes = $this-&gt;get_publish_time($parsed-&gt;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-&gt;internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
+
+                wp_update_attachment_metadata( $postID, wp_generate_attachment_metadata( $postID, $location ) );
+
+                $this-&gt;ok();
+        }
+
+        /**
+         * Retrieve entries URL.
+         *
+         * @since 2.2.0
+         *
+         * @param int $page Page ID.
+         * @return string
+         */
+        function get_entries_url($page = null) {
+                if ( isset($GLOBALS['post_type']) &amp;&amp; ( $GLOBALS['post_type'] == 'attachment' ) )
+                        $path = $this-&gt;MEDIA_PATH;
+                else
+                        $path = $this-&gt;ENTRIES_PATH;
+                $url = $this-&gt;app_base . $path;
+                if ( isset($page) &amp;&amp; is_int($page) )
+                        $url .= &quot;/$page&quot;;
+                return $url;
+        }
+
+        /**
+         * Display entries URL.
+         *
+         * @since 2.2.0
+         *
+         * @param int $page Page ID.
+         */
+        function the_entries_url($page = null) {
+                echo $this-&gt;get_entries_url($page);
+        }
+
+        /**
+         * Retrieve categories URL.
+         *
+         * @since 2.2.0
+         *
+         * @param mixed $deprecated Not used.
+         * @return string
+         */
+        function get_categories_url($deprecated = '') {
+                if ( !empty( $deprecated ) )
+                        _deprecated_argument( __FUNCTION__, '2.5' );
+                return $this-&gt;app_base . $this-&gt;CATEGORIES_PATH;
+        }
+
+        /**
+         * Display category URL.
+         *
+         * @since 2.2.0
+         */
+        function the_categories_url() {
+                echo $this-&gt;get_categories_url();
+        }
+
+        /**
+         * Retrieve attachment URL.
+         *
+         * @since 2.2.0
+         *
+         * @param int $page Page ID.
+         * @return string
+         */
+        function get_attachments_url($page = null) {
+                $url = $this-&gt;app_base . $this-&gt;MEDIA_PATH;
+                if (isset($page) &amp;&amp; is_int($page)) {
+                        $url .= &quot;/$page&quot;;
+                }
+                return $url;
+        }
+
+        /**
+         * Display attachment URL.
+         *
+         * @since 2.2.0
+         *
+         * @param int $page Page ID.
+         */
+        function the_attachments_url($page = null) {
+                echo $this-&gt;get_attachments_url($page);
+        }
+
+        /**
+         * Retrieve service URL.
+         *
+         * @since 2.3.0
+         *
+         * @return string
+         */
+        function get_service_url() {
+                return $this-&gt;app_base . $this-&gt;SERVICE_PATH;
+        }
+
+        /**
+         * Retrieve entry URL.
+         *
+         * @since 2.7.0
+         *
+         * @param int $postID Post ID.
+         * @return string
+         */
+        function get_entry_url($postID = null) {
+                if (!isset($postID)) {
+                        global $post;
+                        $postID = (int) $post-&gt;ID;
+                }
+
+                $url = $this-&gt;app_base . $this-&gt;ENTRY_PATH . &quot;/$postID&quot;;
+
+                return $url;
+        }
+
+        /**
+         * Display entry URL.
+         *
+         * @since 2.7.0
+         *
+         * @param int $postID Post ID.
+         */
+        function the_entry_url($postID = null) {
+                echo $this-&gt;get_entry_url($postID);
+        }
+
+        /**
+         * Retrieve media URL.
+         *
+         * @since 2.2.0
+         *
+         * @param int $postID Post ID.
+         * @return string
+         */
+        function get_media_url($postID = null) {
+                if (!isset($postID)) {
+                        global $post;
+                        $postID = (int) $post-&gt;ID;
+                }
+
+                $url = $this-&gt;app_base . $this-&gt;MEDIA_SINGLE_PATH .&quot;/file/$postID&quot;;
+
+                return $url;
+        }
+
+        /**
+         * Display the media URL.
+         *
+         * @since 2.2.0
+         *
+         * @param int $postID Post ID.
+         */
+        function the_media_url($postID = null) {
+                echo $this-&gt;get_media_url($postID);
+        }
+
+        /**
+         * Set the current entry to post ID.
+         *
+         * @since 2.2.0
+         *
+         * @param int $postID Post ID.
+         */
+        function set_current_entry($postID) {
+                global $entry;
+
+                if (!isset($postID)) {
+                        // $this-&gt;bad_request();
+                        $this-&gt;not_found();
+                }
+
+                $entry = wp_get_single_post($postID,ARRAY_A);
+
+                if (!isset($entry) || !isset($entry['ID']))
+                        $this-&gt;not_found();
+
+                return;
+        }
+
+        /**
+         * Display posts XML.
+         *
+         * @since 2.2.0
+         *
+         * @param int $page Optional. Page ID.
+         * @param string $post_type Optional, default is 'post'. Post Type.
+         */
+        function get_posts($page = 1, $post_type = 'post') {
+                $feed = $this-&gt;get_feed($page, $post_type);
+                $this-&gt;output($feed);
+        }
+
+        /**
+         * Display attachment XML.
+         *
+         * @since 2.2.0
+         *
+         * @param int $page Page ID.
+         * @param string $post_type Optional, default is 'attachment'. Post type.
+         */
+        function get_attachments($page = 1, $post_type = 'attachment') {
+                $GLOBALS['post_type'] = $post_type;
+                $feed = $this-&gt;get_feed($page, $post_type);
+                $this-&gt;output($feed);
+        }
+
+        /**
+         * Retrieve feed XML.
+         *
+         * @since 2.2.0
+         *
+         * @param int $page Page ID.
+         * @param string $post_type Optional, default is post. Post type.
+         * @return string
+         */
+        function get_feed($page = 1, $post_type = 'post') {
+                global $post, $wp, $wp_query, $posts, $wpdb, $blog_id;
+                ob_start();
+
+                $this-&gt;ENTRY_PATH = $post_type;
+
+                if (!isset($page)) {
+                        $page = 1;
+                }
+                $page = (int) $page;
+
+                $count = get_option('posts_per_rss');
+
+                wp('posts_per_page=' . $count . '&amp;offset=' . ($count * ($page-1)) . '&amp;orderby=modified&amp;post_status=any');
+
+                $post = $GLOBALS['post'];
+                $posts = $GLOBALS['posts'];
+                $wp = $GLOBALS['wp'];
+                $wp_query = $GLOBALS['wp_query'];
+                $wpdb = $GLOBALS['wpdb'];
+                $blog_id = (int) $GLOBALS['blog_id'];
+
+                $last_page = $wp_query-&gt;max_num_pages;
+                $next_page = (($page + 1) &gt; $last_page) ? null : $page + 1;
+                $prev_page = ($page - 1) &lt; 1 ? null : $page - 1;
+                $last_page = ((int)$last_page == 1 || (int)$last_page == 0) ? null : (int) $last_page;
+                $self_page = $page &gt; 1 ? $page : null;
+?&gt;&lt;feed xmlns=&quot;&lt;?php echo $this-&gt;ATOM_NS ?&gt;&quot; xmlns:app=&quot;&lt;?php echo $this-&gt;ATOMPUB_NS ?&gt;&quot; xml:lang=&quot;&lt;?php bloginfo_rss( 'language' ); ?&gt;&quot; &lt;?php do_action('app_ns'); ?&gt; &gt;
+&lt;id&gt;&lt;?php $this-&gt;the_entries_url() ?&gt;&lt;/id&gt;
+&lt;updated&gt;&lt;?php echo mysql2date('Y-m-d\TH:i:s\Z', get_lastpostmodified('GMT'), false); ?&gt;&lt;/updated&gt;
+&lt;title type=&quot;text&quot;&gt;&lt;?php bloginfo_rss('name') ?&gt;&lt;/title&gt;
+&lt;subtitle type=&quot;text&quot;&gt;&lt;?php bloginfo_rss(&quot;description&quot;) ?&gt;&lt;/subtitle&gt;
+&lt;link rel=&quot;first&quot; type=&quot;&lt;?php echo $this-&gt;ATOM_CONTENT_TYPE ?&gt;&quot; href=&quot;&lt;?php $this-&gt;the_entries_url() ?&gt;&quot; /&gt;
+&lt;?php if (isset($prev_page)): ?&gt;
+&lt;link rel=&quot;previous&quot; type=&quot;&lt;?php echo $this-&gt;ATOM_CONTENT_TYPE ?&gt;&quot; href=&quot;&lt;?php $this-&gt;the_entries_url($prev_page) ?&gt;&quot; /&gt;
+&lt;?php endif; ?&gt;
+&lt;?php if (isset($next_page)): ?&gt;
+&lt;link rel=&quot;next&quot; type=&quot;&lt;?php echo $this-&gt;ATOM_CONTENT_TYPE ?&gt;&quot; href=&quot;&lt;?php $this-&gt;the_entries_url($next_page) ?&gt;&quot; /&gt;
+&lt;?php endif; ?&gt;
+&lt;link rel=&quot;last&quot; type=&quot;&lt;?php echo $this-&gt;ATOM_CONTENT_TYPE ?&gt;&quot; href=&quot;&lt;?php $this-&gt;the_entries_url($last_page) ?&gt;&quot; /&gt;
+&lt;link rel=&quot;self&quot; type=&quot;&lt;?php echo $this-&gt;ATOM_CONTENT_TYPE ?&gt;&quot; href=&quot;&lt;?php $this-&gt;the_entries_url($self_page) ?&gt;&quot; /&gt;
+&lt;rights type=&quot;text&quot;&gt;Copyright &lt;?php echo date('Y'); ?&gt;&lt;/rights&gt;
+&lt;?php do_action('app_head'); ?&gt;
+&lt;?php if ( have_posts() ) {
+                        while ( have_posts() ) {
+                                the_post();
+                                $this-&gt;echo_entry();
+                        }
+                }
+?&gt;&lt;/feed&gt;
+&lt;?php
+                $feed = ob_get_contents();
+                ob_end_clean();
+                return $feed;
+        }
+
+        /**
+         * Display entry XML.
+         *
+         * @since 2.2.0
+         *
+         * @param int $postID Post ID.
+         * @param string $post_type Optional, default is post. Post type.
+         * @return string.
+         */
+        function get_entry($postID, $post_type = 'post') {
+                ob_start();
+                switch($post_type) {
+                        case 'post':
+                                $varname = 'p';
+                                break;
+                        case 'attachment':
+                                $this-&gt;ENTRY_PATH = 'attachment';
+                                $varname = 'attachment_id';
+                                break;
+                }
+                query_posts($varname . '=' . $postID);
+                if ( have_posts() ) {
+                        while ( have_posts() ) {
+                                the_post();
+                                $this-&gt;echo_entry();
+                                $entry = ob_get_contents();
+                                break;
+                        }
+                }
+                ob_end_clean();
+
+                return $entry;
+        }
+
+        /**
+         * Display post content XML.
+         *
+         * @since 2.3.0
+         */
+        function echo_entry() { ?&gt;
+&lt;entry xmlns=&quot;&lt;?php echo $this-&gt;ATOM_NS ?&gt;&quot;
+       xmlns:app=&quot;&lt;?php echo $this-&gt;ATOMPUB_NS ?&gt;&quot; xml:lang=&quot;&lt;?php bloginfo_rss( 'language' ); ?&gt;&quot;&gt;
+        &lt;id&gt;&lt;?php the_guid( $GLOBALS['post']-&gt;ID ); ?&gt;&lt;/id&gt;
+&lt;?php list($content_type, $content) = prep_atom_text_construct(get_the_title()); ?&gt;
+        &lt;title type=&quot;&lt;?php echo $content_type ?&gt;&quot;&gt;&lt;?php echo $content ?&gt;&lt;/title&gt;
+        &lt;updated&gt;&lt;?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?&gt;&lt;/updated&gt;
+        &lt;published&gt;&lt;?php echo get_post_time('Y-m-d\TH:i:s\Z', true); ?&gt;&lt;/published&gt;
+        &lt;app:edited&gt;&lt;?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?&gt;&lt;/app:edited&gt;
+        &lt;app:control&gt;
+                &lt;app:draft&gt;&lt;?php echo ($GLOBALS['post']-&gt;post_status == 'draft' ? 'yes' : 'no') ?&gt;&lt;/app:draft&gt;
+        &lt;/app:control&gt;
+        &lt;author&gt;
+                &lt;name&gt;&lt;?php the_author()?&gt;&lt;/name&gt;
+&lt;?php if ( get_the_author_meta('url') &amp;&amp; get_the_author_meta('url') != 'http://' ) { ?&gt;
+                &lt;uri&gt;&lt;?php the_author_meta('url') ?&gt;&lt;/uri&gt;
+&lt;?php } ?&gt;
+        &lt;/author&gt;
+&lt;?php if ($GLOBALS['post']-&gt;post_type == 'attachment') { ?&gt;
+        &lt;link rel=&quot;edit-media&quot; href=&quot;&lt;?php $this-&gt;the_media_url() ?&gt;&quot; /&gt;
+        &lt;content type=&quot;&lt;?php echo $GLOBALS['post']-&gt;post_mime_type ?&gt;&quot; src=&quot;&lt;?php the_guid() ; ?&gt;&quot;/&gt;
+&lt;?php } else { ?&gt;
+        &lt;link href=&quot;&lt;?php the_permalink_rss() ?&gt;&quot; /&gt;
+&lt;?php if ( strlen( $GLOBALS['post']-&gt;post_content ) ) :
+list($content_type, $content) = prep_atom_text_construct(get_the_content()); ?&gt;
+        &lt;content type=&quot;&lt;?php echo $content_type ?&gt;&quot;&gt;&lt;?php echo $content ?&gt;&lt;/content&gt;
+&lt;?php endif; ?&gt;
+&lt;?php } ?&gt;
+        &lt;link rel=&quot;edit&quot; href=&quot;&lt;?php $this-&gt;the_entry_url() ?&gt;&quot; /&gt;
+        &lt;?php the_category_rss( 'atom' ); ?&gt;
+&lt;?php list($content_type, $content) = prep_atom_text_construct(get_the_excerpt()); ?&gt;
+        &lt;summary type=&quot;&lt;?php echo $content_type ?&gt;&quot;&gt;&lt;?php echo $content ?&gt;&lt;/summary&gt;
+        &lt;?php do_action('app_entry'); ?&gt;
+&lt;/entry&gt;
+&lt;?php }
+
+        /**
+         * Set 'OK' (200) status header.
+         *
+         * @since 2.2.0
+         */
+        function ok() {
+                header('Content-Type: text/plain');
+                status_header('200');
+                wp_die();
+        }
+
+        /**
+         * Set 'No Content' (204) status header.
+         *
+         * @since 2.2.0
+         */
+        function no_content() {
+                header('Content-Type: text/plain');
+                status_header('204');
+                echo &quot;Moved to Trash.&quot;;
+                wp_die();
+        }
+
+        /**
+         * Display 'Internal Server Error' (500) status header.
+         *
+         * @since 2.2.0
+         *
+         * @param string $msg Optional. Status string.
+         */
+        function internal_error($msg = 'Internal Server Error') {
+                header('Content-Type: text/plain');
+                status_header('500');
+                echo $msg;
+                wp_die();
+        }
+
+        /**
+         * Set 'Bad Request' (400) status header.
+         *
+         * @since 2.2.0
+         */
+        function bad_request() {
+                header('Content-Type: text/plain');
+                status_header('400');
+                wp_die();
+        }
+
+        /**
+         * Set 'Length Required' (411) status header.
+         *
+         * @since 2.2.0
+         */
+        function length_required() {
+                header(&quot;HTTP/1.1 411 Length Required&quot;);
+                header('Content-Type: text/plain');
+                status_header('411');
+                wp_die();
+        }
+
+        /**
+         * Set 'Unsupported Media Type' (415) status header.
+         *
+         * @since 2.2.0
+         */
+        function invalid_media() {
+                header(&quot;HTTP/1.1 415 Unsupported Media Type&quot;);
+                header('Content-Type: text/plain');
+                wp_die();
+        }
+
+        /**
+         * Set 'Forbidden' (403) status header.
+         *
+         * @since 2.6.0
+         */
+        function forbidden($reason='') {
+                header('Content-Type: text/plain');
+                status_header('403');
+                echo $reason;
+                wp_die();
+        }
+
+        /**
+         * Set 'Not Found' (404) status header.
+         *
+         * @since 2.2.0
+         */
+        function not_found() {
+                header('Content-Type: text/plain');
+                status_header('404');
+                wp_die();
+        }
+
+        /**
+         * Set 'Not Allowed' (405) status header.
+         *
+         * @since 2.2.0
+         */
+        function not_allowed($allow) {
+                header('Allow: ' . join(',', $allow));
+                status_header('405');
+                wp_die();
+        }
+
+        /**
+         * Display Redirect (302) content and set status headers.
+         *
+         * @since 2.3.0
+         */
+        function redirect($url) {
+                $escaped_url = esc_attr($url);
+                $content = &lt;&lt;&lt;EOD
+&lt;!DOCTYPE HTML PUBLIC &quot;-//IETF//DTD HTML 2.0//EN&quot;&gt;
+&lt;html&gt;
+  &lt;head&gt;
+    &lt;title&gt;302 Found&lt;/title&gt;
+  &lt;/head&gt;
+&lt;body&gt;
+  &lt;h1&gt;Found&lt;/h1&gt;
+  &lt;p&gt;The document has moved &lt;a href=&quot;$escaped_url&quot;&gt;here&lt;/a&gt;.&lt;/p&gt;
+  &lt;/body&gt;
+&lt;/html&gt;
+
+EOD;
+                header('HTTP/1.1 302 Moved');
+                header('Content-Type: text/html');
+                header('Location: ' . $url);
+                echo $content;
+                wp_die();
+
+        }
+
+        /**
+         * Set 'Client Error' (400) status header.
+         *
+         * @since 2.2.0
+         */
+        function client_error($msg = 'Client Error') {
+                header('Content-Type: text/plain');
+                status_header('400');
+                wp_die();
+        }
+
+        /**
+         * Set created status headers (201).
+         *
+         * Sets the 'content-type', 'content-location', and 'location'.
+         *
+         * @since 2.2.0
+         */
+        function created($post_ID, $content, $post_type = 'post') {
+                $edit = $this-&gt;get_entry_url($post_ID);
+                switch($post_type) {
+                        case 'post':
+                                $ctloc = $this-&gt;get_entry_url($post_ID);
+                                break;
+                        case 'attachment':
+                                $edit = $this-&gt;app_base . &quot;attachments/$post_ID&quot;;
+                                break;
+                }
+                header(&quot;Content-Type: $this-&gt;ATOM_CONTENT_TYPE&quot;);
+                if (isset($ctloc))
+                        header('Content-Location: ' . $ctloc);
+                header('Location: ' . $edit);
+                status_header('201');
+                echo $content;
+                wp_die();
+        }
+
+        /**
+         * Set 'Auth Required' (401) headers.
+         *
+         * @since 2.2.0
+         *
+         * @param string $msg Status header content and HTML content.
+         */
+        function auth_required($msg) {
+                nocache_headers();
+                header('WWW-Authenticate: Basic realm=&quot;WordPress Atom Protocol&quot;');
+                header(&quot;HTTP/1.1 401 $msg&quot;);
+                header('Status: 401 ' . $msg);
+                header('Content-Type: text/html');
+                $content = &lt;&lt;&lt;EOD
+&lt;!DOCTYPE HTML PUBLIC &quot;-//IETF//DTD HTML 2.0//EN&quot;&gt;
+&lt;html&gt;
+  &lt;head&gt;
+    &lt;title&gt;401 Unauthorized&lt;/title&gt;
+  &lt;/head&gt;
+&lt;body&gt;
+    &lt;h1&gt;401 Unauthorized&lt;/h1&gt;
+    &lt;p&gt;$msg&lt;/p&gt;
+  &lt;/body&gt;
+&lt;/html&gt;
+
+EOD;
+                echo $content;
+                wp_die();
+        }
+
+        /**
+         * Display XML and set headers with content type.
+         *
+         * @since 2.2.0
+         *
+         * @param string $xml Display feed content.
+         * @param string $ctype Optional, default is 'atom+xml'. Feed content type.
+         */
+        function output($xml, $ctype = 'application/atom+xml') {
+                status_header('200');
+                $xml = '&lt;?xml version=&quot;1.0&quot; encoding=&quot;' . strtolower(get_option('blog_charset')) . '&quot;?&gt;'.&quot;\n&quot;.$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-&gt;do_output)
+                        echo $xml;
+                wp_die();
+        }
+
+        /**
+         * Sanitize content for database usage.
+         *
+         * @since 2.2.0
+         *
+         * @param array $array Sanitize array and multi-dimension array.
+         */
+        function escape(&amp;$array) {
+                global $wpdb;
+
+                foreach ($array as $k =&gt; $v) {
+                                if (is_array($v)) {
+                                                $this-&gt;escape($array[$k]);
+                                } else if (is_object($v)) {
+                                                //skip
+                                } else {
+                                                $array[$k] = $wpdb-&gt;escape($v);
+                                }
+                }
+        }
+
+        /**
+         * Access credential through various methods and perform login.
+         *
+         * @since 2.2.0
+         *
+         * @return bool
+         */
+        function authenticate() {
+
+                // 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)));
+                } else if (isset($_SERVER['REDIRECT_REMOTE_USER'])) {
+                        // Workaround for setups that do not forward HTTP_AUTHORIZATION
+                        // See http://trac.wordpress.org/ticket/7361
+                        list($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']) =
+                                explode(':', base64_decode(substr($_SERVER['REDIRECT_REMOTE_USER'], 6)));
+                }
+
+                // If Basic Auth is working...
+                if (isset($_SERVER['PHP_AUTH_USER']) &amp;&amp; isset($_SERVER['PHP_AUTH_PW'])) {
+
+                        $user = wp_authenticate($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']);
+                        if ( $user &amp;&amp; !is_wp_error($user) ) {
+                                wp_set_current_user($user-&gt;ID);
+                                return true;
+                        }
+                }
+
+                return false;
+        }
+
+        /**
+         * Retrieve accepted content types.
+         *
+         * @since 2.2.0
+         *
+         * @param array $types Optional. Content Types.
+         * @return string
+         */
+        function get_accepted_content_type($types = null) {
+
+                if (!isset($types)) {
+                        $types = $this-&gt;media_content_types;
+                }
+
+                if (!isset($_SERVER['CONTENT_LENGTH']) || !isset($_SERVER['CONTENT_TYPE'])) {
+                        $this-&gt;length_required();
+                }
+
+                $type = $_SERVER['CONTENT_TYPE'];
+                list($type,$subtype) = explode('/',$type);
+                list($subtype) = explode(&quot;;&quot;,$subtype); // strip MIME parameters
+
+                foreach($types as $t) {
+                        list($acceptedType,$acceptedSubtype) = explode('/',$t);
+                        if ($acceptedType == '*' || $acceptedType == $type) {
+                                if ($acceptedSubtype == '*' || $acceptedSubtype == $subtype)
+                                        return $type . &quot;/&quot; . $subtype;
+                        }
+                }
+
+                $this-&gt;invalid_media();
+        }
+
+        /**
+         * Process conditionals for posts.
+         *
+         * @since 2.2.0
+         */
+        function process_conditionals() {
+
+                if (empty($this-&gt;params)) return;
+                if ($_SERVER['REQUEST_METHOD'] == 'DELETE') return;
+
+                switch($this-&gt;params[0]) {
+                        case $this-&gt;ENTRY_PATH:
+                                global $post;
+                                $post = wp_get_single_post($this-&gt;params[1]);
+                                $wp_last_modified = get_post_modified_time('D, d M Y H:i:s', true);
+                                $post = null;
+                                break;
+                        case $this-&gt;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(&quot;Last-Modified: $wp_last_modified&quot;);
+                @header(&quot;ETag: $wp_etag&quot;);
+
+                // Support for Conditional GET
+                if (isset($_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 &amp;&amp; $client_etag) ?
+                (($client_modified_timestamp &gt;= $wp_modified_timestamp) &amp;&amp; ($client_etag == $wp_etag)) :
+                (($client_modified_timestamp &gt;= $wp_modified_timestamp) || ($client_etag == $wp_etag)) ) {
+                        status_header( 304 );
+                        wp_die();
+                }
+        }
+
+        /**
+         * Convert RFC3339 time string to timestamp.
+         *
+         * @since 2.3.0
+         *
+         * @param string $str String to time.
+         * @return bool|int false if format is incorrect.
+         */
+        function rfc3339_str2time($str) {
+
+                $match = false;
+                if (!preg_match(&quot;/(\d{4}-\d{2}-\d{2})T(\d{2}\:\d{2}\:\d{2})\.?\d{0,3}(Z|[+-]+\d{2}\:\d{2})/&quot;, $str, $match))
+                        return false;
+
+                if ($match[3] == 'Z')
+                        $match[3] = '+0000';
+
+                return strtotime($match[1] . &quot; &quot; . $match[2] . &quot; &quot; . $match[3]);
+        }
+
+        /**
+         * Retrieve published time to display in XML.
+         *
+         * @since 2.3.0
+         *
+         * @param string $published Time string.
+         * @return string
+         */
+        function get_publish_time($published) {
+
+                $pubtime = $this-&gt;rfc3339_str2time($published);
+
+                if (!$pubtime) {
+                        return array(current_time('mysql'),current_time('mysql',1));
+                } else {
+                        return array(date(&quot;Y-m-d H:i:s&quot;, $pubtime), gmdate(&quot;Y-m-d H:i:s&quot;, $pubtime));
+                }
+        }
+
+}
</ins></span></pre>
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