WP Merge to rev 5499, this is a big one! Test it before you put it live!

Test only, not for production use yet


git-svn-id: http://svn.automattic.com/wordpress-mu/trunk@972 7be80a69-a1ef-0310-a953-fb0f7c49ff36

1 files changed, 1260 insertions, 0 deletions

diff --git a/wp-app.php b/wp-app.php
new file mode 100644
index 0000000..078667d
--- /dev/null
+++ b/wp-app.php
@@ -0,0 +1,1260 @@
+<?php
+/* 
+ * wp-app.php - Atom Publishing Protocol support for WordPress
+ * Original code by: Elias Torres, http://torrez.us/archives/2006/08/31/491/
+ * Modified by: Dougal Campbell, http://dougal.gunters.org/
+ *
+ * Version: 1.0.5-dc
+ */
+
+define('APP_REQUEST', true);
+
+require_once('wp-config.php');
+require_once('wp-includes/post-template.php');
+
+// Attempt to automatically detect whether to use querystring
+// or PATH_INFO, based on our environment:
+$use_querystring = $wp_version == 'MU' ? 1 : 0;
+
+// If using querystring, we need to put the path together manually:
+if ($use_querystring) {
+	$GLOBALS['use_querystring'] = $use_querystring;
+	$action = $_GET['action'];
+	$eid = (int) $_GET['eid'];
+
+	$_SERVER['PATH_INFO'] = $action;
+
+	if ($eid) {
+		$_SERVER['PATH_INFO'] .= "/$eid";
+	}
+} else {
+	$_SERVER['PATH_INFO'] = str_replace( '/wp-app.php', '', $_SERVER['REQUEST_URI'] );
+}
+
+$app_logging = 0;
+
+function log_app($label,$msg) {
+	global $app_logging;
+	if ($app_logging) {
+		$fp = fopen( 'app.log', 'a+');
+		$date = gmdate( 'Y-m-d H:i:s' );
+		fwrite($fp, "\n\n$date - $label\n$msg\n");
+		fclose($fp);
+	}
+}
+
+if ( !function_exists('wp_set_current_user') ) :
+function wp_set_current_user($id, $name = '') {
+	global $current_user;
+
+	if ( isset($current_user) && ($id == $current_user->ID) )
+		return $current_user;
+
+	$current_user = new WP_User($id, $name);
+
+	return $current_user;
+}
+endif;
+
+function wa_posts_where_include_drafts_filter($where) {
+	$where = ereg_replace("post_author = ([0-9]+) AND post_status != 'draft'","post_author = \\1 AND post_status = 'draft'", $where);
+	return $where;
+}
+add_filter('posts_where', 'wa_posts_where_include_drafts_filter');
+
+class AtomEntry {
+	var $links = array();
+	var $categories = array();
+}
+
+class AtomParser {
+
+	var $ATOM_CONTENT_ELEMENTS = array('content','summary','title','subtitle','rights');
+	var $ATOM_SIMPLE_ELEMENTS = array('id','updated','published','draft');
+
+	var $depth = 0;
+	var $indent = 2;
+	var $in_content;
+	var $ns_contexts = array();
+	var $ns_decls = array();
+	var $is_xhtml = false;
+	var $skipped_div = false;
+
+	var $entry;
+
+	function AtomParser() {
+
+		$this->entry = new AtomEntry();
+		$this->map_attrs_func = create_function('$k,$v', 'return "$k=\"$v\"";');
+		$this->map_xmlns_func = create_function('$p,$n', '$xd = "xmlns"; if(strlen($n[0])>0) $xd .= ":{$n[0]}"; return "{$xd}=\"{$n[1]}\"";');
+	}
+
+	function parse() {
+
+		global $app_logging;
+		array_unshift($this->ns_contexts, array());
+
+		$parser = xml_parser_create_ns();
+		xml_set_object($parser, $this);
+		xml_set_element_handler($parser, "start_element", "end_element");
+		xml_parser_set_option($parser,XML_OPTION_CASE_FOLDING,0);
+		xml_parser_set_option($parser,XML_OPTION_SKIP_WHITE,0);
+		xml_set_character_data_handler($parser, "cdata");
+		xml_set_default_handler($parser, "_default");
+		xml_set_start_namespace_decl_handler($parser, "start_ns");
+		xml_set_end_namespace_decl_handler($parser, "end_ns");
+
+		$contents = "";
+
+		$fp = fopen("php://input", "r");
+		while(!feof($fp)) {
+			$line = fgets($fp, 4096);
+		 
+			if($app_logging) $contents .= $line;
+
+			if(!xml_parse($parser, $line)) {
+				log_app("xml_parse_error", "line: $line");
+				$this->error = sprintf(__('XML error: %s at line %d')."\n",
+					xml_error_string(xml_get_error_code($xml_parser)),
+					xml_get_current_line_number($xml_parser));
+				log_app("xml_parse_error", $this->error);
+				return false;
+			}
+		}
+		fclose($fp);
+
+		xml_parser_free($parser);
+
+		log_app("AtomParser->parse()",trim($contents));
+
+		return true;
+	}
+
+	function start_element($parser, $name, $attrs) {
+
+		$tag = array_pop(split(":", $name));
+
+		array_unshift($this->ns_contexts, $this->ns_decls);
+
+		$this->depth++;
+
+		#print str_repeat(" ", $this->depth * $this->indent) . "start_element('$name')" ."\n";
+		#print str_repeat(" ", $this->depth+1 * $this->indent) . print_r($this->ns_contexts,true) ."\n";
+
+		if(!empty($this->in_content)) {
+			$attrs_prefix = array();
+
+			// resolve prefixes for attributes
+			foreach($attrs as $key => $value) {
+				$attrs_prefix[$this->ns_to_prefix($key)] = $this->xml_escape($value);
+			}
+			$attrs_str = join(' ', array_map($this->map_attrs_func, array_keys($attrs_prefix), array_values($attrs_prefix)));
+			if(strlen($attrs_str) > 0) {
+				$attrs_str = " " . $attrs_str;
+			}
+
+			$xmlns_str = join(' ', array_map($this->map_xmlns_func, array_keys($this->ns_contexts[0]), array_values($this->ns_contexts[0])));
+			if(strlen($xmlns_str) > 0) {
+				$xmlns_str = " " . $xmlns_str;
+			}
+
+			// handle self-closing tags (case: a new child found right-away, no text node)
+			if(count($this->in_content) == 2) {
+				array_push($this->in_content, ">");
+			}
+		 
+			array_push($this->in_content, "<". $this->ns_to_prefix($name) ."{$xmlns_str}{$attrs_str}");
+		} else if(in_array($tag, $this->ATOM_CONTENT_ELEMENTS) || in_array($tag, $this->ATOM_SIMPLE_ELEMENTS)) {
+			$this->in_content = array();
+			$this->is_xhtml = $attrs['type'] == 'xhtml'; 
+			array_push($this->in_content, array($tag,$this->depth));
+		} else if($tag == 'link') {
+			array_push($this->entry->links, $attrs);
+		} else if($tag == 'category') {
+			array_push($this->entry->categories, $attrs);
+		}
+
+		$this->ns_decls = array();
+	}
+
+	function end_element($parser, $name) {
+
+		$tag = array_pop(split(":", $name));
+
+		if(!empty($this->in_content)) {
+			if($this->in_content[0][0] == $tag && 
+			$this->in_content[0][1] == $this->depth) {
+				array_shift($this->in_content);
+				if($this->is_xhtml) {
+					$this->in_content = array_slice($this->in_content, 2, count($this->in_content)-3);
+				}
+				$this->entry->$tag = join('',$this->in_content);
+				$this->in_content = array();
+			} else {
+				$endtag = $this->ns_to_prefix($name);
+				if (strpos($this->in_content[count($this->in_content)-1], '<' . $endtag) !== false) {
+					array_push($this->in_content, "/>");
+				} else {
+					array_push($this->in_content, "</$endtag>");
+				}
+			}
+		}
+
+		array_shift($this->ns_contexts);
+
+		#print str_repeat(" ", $this->depth * $this->indent) . "end_element('$name')" ."\n";
+
+		$this->depth--;
+	}
+
+	function start_ns($parser, $prefix, $uri) {
+		#print str_repeat(" ", $this->depth * $this->indent) . "starting: " . $prefix . ":" . $uri . "\n";
+		array_push($this->ns_decls, array($prefix,$uri));
+	}
+
+	function end_ns($parser, $prefix) {
+		#print str_repeat(" ", $this->depth * $this->indent) . "ending: #" . $prefix . "#\n";
+	}
+
+	function cdata($parser, $data) {
+		#print str_repeat(" ", $this->depth * $this->indent) . "data: #" . $data . "#\n";
+		if(!empty($this->in_content)) {
+			// handle self-closing tags (case: text node found, need to close element started)
+			if (strpos($this->in_content[count($this->in_content)-1], '<') !== false) {
+				array_push($this->in_content, ">");
+			}
+			array_push($this->in_content, $this->xml_escape($data));
+		}
+	}
+
+	function _default($parser, $data) {
+		# when does this gets called?
+	}
+
+
+	function ns_to_prefix($qname) {
+		$components = split(":", $qname);
+		$name = array_pop($components);
+
+		if(!empty($components)) {
+			$ns = join(":",$components);
+			foreach($this->ns_contexts as $context) {
+				foreach($context as $mapping) {
+					if($mapping[1] == $ns && strlen($mapping[0]) > 0) {
+						return "$mapping[0]:$name";
+					}
+				}
+			}
+		} 
+		return $name;
+	}
+
+	function xml_escape($string)
+	{
+			 return str_replace(array('&','"',"'",'<','>'), 
+				array('&amp;','&quot;','&apos;','&lt;','&gt;'), 
+				$string );
+	}
+}
+
+class AtomServer {
+
+	var $ATOM_CONTENT_TYPE = 'application/atom+xml';
+	var $CATEGORIES_CONTENT_TYPE = 'application/atomcat+xml';
+	var $INTROSPECTION_CONTENT_TYPE = 'application/atomserv+xml';
+
+	var $ENTRIES_PATH = "posts";
+	var $CATEGORIES_PATH = "categories";
+	var $MEDIA_PATH = "attachments";
+	var $ENTRY_PATH = "post";
+	var $MEDIA_SINGLE_PATH = "attachment";
+
+	var $params = array();
+	var $script_name = "wp-app.php";
+	var $media_content_types = array('image/*','audio/*','video/*');
+	var $atom_content_types = array('application/atom+xml');
+
+	var $selectors = array();
+
+	// support for head
+	var $do_output = true;
+
+	function AtomServer() {
+
+		$this->script_name = array_pop(explode('/',$_SERVER['SCRIPT_NAME']));
+
+		$this->selectors = array(
+			'@/service@' => 
+				array('GET' => 'get_service'),
+			'@/categories@' =>
+				array('GET' => 'get_categories_xml'),
+			'@/post/(\d+)@' => 
+				array('GET' => 'get_post', 
+						'PUT' => 'put_post', 
+						'DELETE' => 'delete_post'),
+			'@/posts/?([^/]+)?@' => 
+				array('GET' => 'get_posts', 
+						'POST' => 'create_post'),
+			'@/attachments/?(\d+)?@' => 
+				array('GET' => 'get_attachment', 
+						'POST' => 'create_attachment'),
+			'@/attachment/file/(\d+)@' => 
+				array('GET' => 'get_file', 
+						'PUT' => 'put_file', 
+						'DELETE' => 'delete_file'),
+			'@/attachment/(\d+)@' => 
+				array('GET' => 'get_attachment', 
+						'PUT' => 'put_attachment', 
+						'DELETE' => 'delete_attachment'),
+		);
+	}
+
+	function handle_request() {
+
+		$path = $_SERVER['PATH_INFO'];
+		$method = $_SERVER['REQUEST_METHOD'];
+
+		log_app('REQUEST',"$method $path\n================");
+
+		//$this->process_conditionals();
+
+		// exception case for HEAD (treat exactly as GET, but don't output)
+		if($method == 'HEAD') {
+			$this->do_output = false;
+			$method = 'GET';
+		}
+
+		// lame. 
+		if(strlen($path) == 0 || $path == '/') {
+			$path = '/service';
+		}
+
+		// authenticate regardless of the operation and set the current
+		// user. each handler will decide if auth is required or not.
+		$this->authenticate();
+
+		// dispatch
+		foreach($this->selectors as $regex => $funcs) {
+			if(preg_match($regex, $path, $matches)) {
+				if(isset($funcs[$method])) {
+					array_shift($matches);
+					call_user_func_array(array(&$this,$funcs[$method]), $matches);
+					exit();
+				} else {
+					// only allow what we have handlers for...
+					$this->not_allowed(array_keys($funcs));
+				}
+			}
+		}
+
+		// oops, nothing found
+		$this->not_found();
+	}
+
+	function get_service() {
+		log_app('function','get_service()');
+		$entries_url = $this->get_entries_url();
+		$categories_url = $this->get_categories_url(); 
+		$media_url = $this->get_attachments_url();
+		$accepted_content_types = join(',',$this->media_content_types);
+		$introspection = <<<EOD
+<service xmlns="http://purl.org/atom/app#" xmlns:atom="http://www.w3.org/2005/Atom"> 
+	<workspace title="WordPress Workspace"> 
+	    <collection href="$entries_url" title="Posts"> 
+		<atom:title>WordPress Posts</atom:title> 
+		<accept>entry</accept> 
+		<categories href="$categories_url" /> 
+	    </collection> 
+	    <collection href="$media_url" title="Media"> 
+		<atom:title>WordPress Media</atom:title> 
+		<accept>$accepted_content_types</accept> 
+	    </collection> 
+	</workspace> 
+</service>
+
+EOD;
+
+		$this->output($introspection, $this->INTROSPECTION_CONTENT_TYPE); 
+	}
+
+function get_categories_xml() {
+	log_app('function','get_categories_xml()');
+	$home = get_bloginfo_rss('home');
+
+	$categories = "";
+	$cats = get_categories("hierarchical=0&hide_empty=0");
+	foreach ((array) $cats as $cat) {
+		$categories .= "    <category term=\"" . attribute_escape($cat->cat_name) .  "\" />\n";
+	}
+        $output = <<<EOD
+<app:categories xmlns:app="http://purl.org/atom/app#"
+	xmlns="http://www.w3.org/2005/Atom"
+	fixed="yes" scheme="$home">
+	$categories
+</app:categories>
+EOD;
+	$this->output($output, $this->CATEGORIES_CONTENT_TYPE); 
+}
+
+	/*
+	 * Create Post (No arguments)
+	 */
+	function create_post() {
+		global $blog_id;
+		$this->get_accepted_content_type($this->atom_content_types);
+
+		$parser = new AtomParser();
+		if(!$parser->parse()) {
+			$this->client_error();
+		}
+
+		$entry = $parser->entry;
+
+		$publish = (isset($entry->draft) && trim($entry->draft) == 'yes') ? false : true;
+
+		$cap = ($publish) ? 'publish_posts' : 'edit_posts';
+
+		if(!current_user_can($cap))
+			$this->auth_required('Sorry, you do not have the right to edit/publish new posts.');
+
+		$blog_ID = (int ) $blog_id;
+		$post_status = ($publish) ? 'publish' : 'draft';
+		$post_author = (int) $user->ID;
+		$post_title = $entry->title;
+		$post_content = $entry->content;
+		$post_excerpt = $entry->summary;
+		$post_date = current_time('mysql');
+		$post_date_gmt = current_time('mysql', 1);
+
+		$post_data = compact('blog_ID', 'post_author', 'post_date', 'post_date_gmt', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt');
+
+		log_app('Inserting Post. Data:', print_r($post_data,true));
+
+		$postID = wp_insert_post($post_data);
+
+		if (!$postID) {
+			$this->internal_error('Sorry, your entry could not be posted. Something wrong happened.');
+		}
+
+		$output = $this->get_entry($postID);
+
+		log_app('function',"create_post($postID)");
+		$this->created($postID, $output);
+	}
+
+	function get_post($postID) {
+
+		global $entry;
+		$this->set_current_entry($postID);
+		$output = $this->get_entry($postID);
+		log_app('function',"get_post($postID)");
+		$this->output($output);
+
+	}
+
+	function put_post($postID) {
+
+		// checked for valid content-types (atom+xml)
+		// quick check and exit
+		$this->get_accepted_content_type($this->atom_content_types);
+
+		$parser = new AtomParser();
+		if(!$parser->parse()) {
+			$this->bad_request();
+		}
+
+		$parsed = $parser->entry;
+
+		// check for not found
+		global $entry;
+		$entry = $GLOBALS['entry'];
+		$this->set_current_entry($postID);
+		$this->escape($GLOBALS['entry']);
+
+		if(!current_user_can('edit_post', $entry['ID']))
+			$this->auth_required('Sorry, you do not have the right to edit this post.');
+
+		$publish = (isset($parsed->draft) && trim($parsed->draft) == 'yes') ? false : true;
+
+		extract($entry);
+
+		$post_title = $parsed->title;
+		$post_content = $parsed->content;
+		$post_excerpt = $parsed->summary;
+
+		// let's not go backwards and make something draft again.
+		if(!$publish && $post_status == 'draft') {
+			$post_status = ($publish) ? 'publish' : 'draft';
+		}
+
+		$postdata = compact('ID', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt');
+
+		$result = wp_update_post($postdata);
+
+		if (!$result) {
+			$this->internal_error('For some strange yet very annoying reason, this post could not be edited.');
+		}
+
+		log_app('function',"put_post($postID)");
+		$this->ok();
+	}
+
+	function delete_post($postID) {
+
+		// check for not found
+		global $entry;
+		$this->set_current_entry($postID);
+
+		if(!current_user_can('edit_post', $postID)) {
+			$this->auth_required('Sorry, you do not have the right to delete this post.');
+		}
+
+		if ($entry['post_type'] == 'attachment') {
+			$this->delete_attachment($postID);
+		} else {
+			$result = wp_delete_post($postID);
+
+			if (!$result) {
+				$this->internal_error('For some strange yet very annoying reason, this post could not be deleted.');
+			}
+
+			log_app('function',"delete_post($postID)");
+			$this->ok();
+		}
+
+	}
+
+	function get_attachment($postID = NULL) {
+
+		global $entry;
+		if (!isset($postID)) {
+			$this->get_attachments();
+		} else {
+			$this->set_current_entry($postID);
+			$output = $this->get_entry($postID, 'attachment');
+			log_app('function',"get_attachment($postID)");
+			$this->output($output);
+		}
+	}
+
+	function create_attachment() {
+		global $wp, $wpdb, $wp_query, $blog_id;
+
+		$type = $this->get_accepted_content_type();
+
+		if(!current_user_can('upload_files'))
+			$this->auth_required('You do not have permission to upload files.');
+
+		$fp = fopen("php://input", "rb");
+		$bits = NULL;
+		while(!feof($fp)) {
+			$bits .= fread($fp, 4096);
+		}
+		fclose($fp);
+
+		$slug = '';
+		if ( isset( $_SERVER['HTTP_SLUG'] ) )
+			$slug = sanitize_file_name( $_SERVER['HTTP_SLUG'] );
+		elseif ( isset( $_SERVER['HTTP_TITLE'] ) )
+			$slug = sanitize_file_name( $_SERVER['HTTP_TITLE'] );
+		elseif ( empty( $slug ) ) // just make a random name
+			$slug = substr( md5( uniqid( microtime() ) ), 0, 7);
+		$ext = preg_replace( '|.*/([a-z]+)|', '$1', $_SERVER['CONTENT_TYPE'] );
+		$slug = "$slug.$ext";
+		$file = wp_upload_bits( $slug, NULL, $bits);
+
+		log_app('wp_upload_bits returns:',print_r($file,true));
+
+		$url = $file['url'];
+		$file = $file['file'];
+		$filename = basename($file);
+
+		$header = apply_filters('wp_create_file_in_uploads', $file); // replicate
+
+		// Construct the attachment array
+		$attachment = array(
+			'post_title' => $slug,
+			'post_content' => $slug,
+			'post_status' => 'attachment',
+			'post_parent' => 0,
+			'post_mime_type' => $type,
+			'guid' => $url
+			);
+
+		// Save the data
+		$postID = wp_insert_attachment($attachment, $file, $post);
+
+		if (!$postID) {
+			$this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
+		}
+
+		$output = $this->get_entry($postID, 'attachment');
+
+		$this->created($postID, $output, 'attachment');
+		log_app('function',"create_attachment($postID)");
+	}
+
+	function put_attachment($postID) {
+
+		// checked for valid content-types (atom+xml)
+		// quick check and exit
+		$this->get_accepted_content_type($this->atom_content_types);
+
+		$parser = new AtomParser();
+		if(!$parser->parse()) {
+			$this->bad_request();
+		}
+
+		$parsed = $parser->entry;
+
+		// check for not found
+		global $entry;
+		$this->set_current_entry($postID);
+		$this->escape($entry);
+
+		if(!current_user_can('edit_post', $entry['ID']))
+			$this->auth_required(__('Sorry, you do not have the right to edit this post.'));
+
+		$publish = (isset($parsed->draft) && trim($parsed->draft) == 'yes') ? false : true;
+
+		extract($entry);
+
+		$post_title = $parsed->title;
+		$post_content = $parsed->content;
+
+		$postdata = compact('ID', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt');
+
+		$result = wp_update_post($postdata);
+
+		if (!$result) {
+			$this->internal_error(__('For some strange yet very annoying reason, this post could not be edited.'));
+		}
+
+		log_app('function',"put_attachment($postID)");
+		$this->ok();
+	}
+
+	function delete_attachment($postID) {
+		log_app('function',"delete_attachment($postID). File '$location' deleted.");
+
+		// check for not found
+		global $entry;
+		$this->set_current_entry($postID);
+
+		if(!current_user_can('edit_post', $postID)) {
+			$this->auth_required(__('Sorry, you do not have the right to delete this post.'));
+		}
+
+		$location = get_post_meta($entry['ID'], '_wp_attached_file', true);
+
+		// delete file
+		@unlink($location);
+
+		// delete attachment
+		$result = wp_delete_post($postID);
+
+		if (!$result) {
+			$this->internal_error(__('For some strange yet very annoying reason, this post could not be deleted.'));
+		}
+
+		log_app('function',"delete_attachment($postID). File '$location' deleted.");
+		$this->ok();
+	}
+
+	function get_file($postID) {
+
+		// check for not found
+		global $entry;
+		$this->set_current_entry($postID);
+
+		// then whether user can edit the specific post
+		if(!current_user_can('edit_post', $postID)) {
+			$this->auth_required(__('Sorry, you do not have the right to edit this post.'));
+		}
+
+		$location = get_post_meta($entry['ID'], '_wp_attached_file', true);
+
+		if(!isset($location))
+			$this->internal_error(__('Error ocurred while accessing post metadata for file location.'));
+
+		header('Content-Type: ' . $entry['post_mime_type']);
+
+		$fp = fopen($location, "rb");
+		while(!feof($fp)) {
+			echo fread($fp, 4096);
+		}
+		fclose($fp);
+
+		log_app('function',"get_file($postID)");
+		$this->ok();
+	}
+
+	function put_file($postID) {
+
+		$type = $this->get_accepted_content_type();
+
+		// first check if user can upload
+		if(!current_user_can('upload_files'))
+			$this->auth_required(__('You do not have permission to upload files.'));
+
+		// check for not found
+		global $entry;
+		$this->set_current_entry($postID);
+
+		// then whether user can edit the specific post
+		if(!current_user_can('edit_post', $postID)) {
+			$this->auth_required(__('Sorry, you do not have the right to edit this post.'));
+		}
+
+		$location = get_post_meta($entry['ID'], '_wp_attached_file', true);
+
+		if(!isset($location))
+			$this->internal_error(__('Error ocurred while accessing post metadata for file location.'));
+
+		$fp = fopen("php://input", "rb");
+		$localfp = fopen($location, "w+");
+		while(!feof($fp)) {
+			fwrite($localfp,fread($fp, 4096));
+		}
+		fclose($fp);
+		fclose($localfp);
+
+		log_app('function',"put_file($postID)");
+		$this->ok();
+	}
+
+	function get_entries_url($page = NULL) {
+		global $use_querystring;
+		$url = get_bloginfo('url') . '/' . $this->script_name;
+		if ($use_querystring) {
+			$url .= '?action=/' . $this->ENTRIES_PATH;
+			if(isset($page) && is_int($page)) {
+				$url .= "&amp;eid=$page";
+			}
+		} else {
+			$url .= '/' . $this->ENTRIES_PATH;
+			if(isset($page) && is_int($page)) {
+				$url .= "/$page";
+			}
+		}
+		return $url;
+	}
+
+	function the_entries_url($page = NULL) {
+		$url = $this->get_entries_url($page);
+		echo $url;
+	}
+
+	function get_categories_url($page = NULL) {
+		global $use_querystring;
+		$url = get_bloginfo('url') . '/' . $this->script_name;
+		if ($use_querystring) {
+			$url .= '?action=/' . $this->CATEGORIES_PATH;
+		} else {
+			$url .= '/' . $this->CATEGORIES_PATH;
+		}
+		return $url;
+	}
+
+	function the_categories_url() {
+		$url = $this->get_categories_url();
+		echo $url;
+    }
+
+	function get_attachments_url($page = NULL) {
+		global $use_querystring;
+		$url = get_bloginfo('url') . '/' . $this->script_name;
+		if ($use_querystring) {
+			$url .= '?action=/' . $this->MEDIA_PATH;
+			if(isset($page) && is_int($page)) {
+				$url .= "&amp;eid=$page";
+			}
+		} else {
+			$url .= '/' . $this->MEDIA_PATH;
+			if(isset($page) && is_int($page)) {
+				$url .= "/$page";
+			}
+		}
+		return $url;
+	}
+
+	function the_attachments_url($page = NULL) {
+		$url = $this->get_attachments_url($page);
+		echo $url;
+	}
+
+
+	function get_entry_url($postID = NULL) {
+		global $use_querystring;
+		if(!isset($postID)) {
+			global $post;
+			$postID = (int) $GLOBALS['post']->ID;
+		}
+
+		if ($use_querystring) {
+			$url = get_bloginfo('url') . '/' . $this->script_name . '?action=/' . $this->ENTRY_PATH . "&amp;eid=$postID";
+		} else {
+			$url = get_bloginfo('url') . '/' . $this->script_name . '/' . $this->ENTRY_PATH . "/$postID";
+		}
+
+		log_app('function',"get_entry_url() = $url");
+		return $url;
+	}
+
+	function the_entry_url($postID = NULL) {
+		$url = $this->get_entry_url($postID);
+		echo $url;
+	}
+
+	function get_media_url($postID = NULL) {
+		global $use_querystring;
+		if(!isset($postID)) {
+			global $post;
+			$postID = (int) $GLOBALS['post']->ID;
+		}
+
+		if ($use_querystring) {
+			$url = get_bloginfo('url') . '/' . $this->script_name . '?action=/' . $this->MEDIA_SINGLE_PATH ."&amp;eid=$postID";
+		} else {
+			$url = get_bloginfo('url') . '/' . $this->script_name . '/' . $this->MEDIA_SINGLE_PATH ."/$postID";
+		}
+
+		log_app('function',"get_media_url() = $url");
+		return $url;
+	}
+
+	function the_media_url($postID = NULL) {
+		$url = $this->get_media_url($postID);
+		echo $url;
+	}
+
+	function set_current_entry($postID) {
+		global $entry;
+		log_app('function',"set_current_entry($postID)");
+
+		if(!isset($postID)) {
+			// $this->bad_request();
+			$this->not_found();
+		}
+
+		$entry = wp_get_single_post($postID,ARRAY_A);
+
+		if(!isset($entry) || !isset($entry['ID']))
+			$this->not_found();
+
+		return;
+	}
+
+	function get_posts_count() {
+		global $wpdb;
+		log_app('function',"get_posts_count()");
+		return $wpdb->get_var("SELECT COUNT(*) FROM $wpdb->posts WHERE post_date_gmt < '" . gmdate("Y-m-d H:i:s",time()) . "'");
+	}
+
+
+	function get_posts($page = 1, $post_type = 'post') {
+			log_app('function',"get_posts($page, '$post_type')");
+			$feed = $this->get_feed($page, $post_type);
+			$this->output($feed);
+	}
+
+	function get_attachments($page = 1, $post_type = 'attachment') {
+			log_app('function',"get_attachments($page, '$post_type')");
+			$feed = $this->get_feed($page, $post_type);
+			$this->output($feed);
+	}
+
+	function get_feed($page = 1, $post_type = 'post') {
+		global $post, $wp, $wp_query, $posts, $wpdb, $blog_id, $post_cache;
+		log_app('function',"get_feed($page, '$post_type')");
+		ob_start();
+
+		if(!isset($page)) {
+			$page = 1;
+		}
+		$page = (int) $page;
+
+		$count = get_option('posts_per_rss');
+		$query = "paged=$page&posts_per_page=$count&order=DESC";
+		if($post_type == 'attachment') {
+			$query .= "&post_type=$post_type";
+		}
+		query_posts($query);
+		$post = $GLOBALS['post'];
+		$posts = $GLOBALS['posts'];
+		$wp = $GLOBALS['wp'];
+		$wp_query = $GLOBALS['wp_query'];
+		$wpdb = $GLOBALS['wpdb'];
+		$blog_id = (int) $GLOBALS['blog_id'];
+		$post_cache = $GLOBALS['post_cache'];
+
+
+		$total_count = $this->get_posts_count();
+		$last_page = (int) ceil($total_count / $count);
+		$next_page = (($page + 1) > $last_page) ? NULL : $page + 1;
+		$prev_page = ($page - 1) < 1 ? NULL : $page - 1; 
+		$last_page = ((int)$last_page == 1 || (int)$last_page == 0) ? NULL : (int) $last_page;
+?><feed xmlns="http://www.w3.org/2005/Atom" xmlns:app="http://purl.org/atom/app#" xml:lang="<?php echo get_option('rss_language'); ?>">
+<id><?php $this->the_entries_url() ?></id>
+<updated><?php echo mysql2date('Y-m-d\TH:i:s\Z', get_lastpostmodified('GMT')); ?></updated>
+<title type="text"><?php bloginfo_rss('name') ?></title>
+<subtitle type="text"><?php bloginfo_rss("description") ?></subtitle>
+<link rel="first" type="application/atom+xml" href="<?php $this->the_entries_url() ?>" />
+<?php if(isset($prev_page)): ?>
+<link rel="previous" type="application/atom+xml" href="<?php $this->the_entries_url($prev_page) ?>" />
+<?php endif; ?>
+<?php if(isset($next_page)): ?>
+<link rel="next" type="application/atom+xml" href="<?php $this->the_entries_url($next_page) ?>" />
+<?php endif; ?>
+<link rel="last" type="application/atom+xml" href="<?php $this->the_entries_url($last_page) ?>" />
+<link rel="self" type="application/atom+xml" href="<?php $this->the_entries_url() ?>" />
+<rights type="text">Copyright <?php echo mysql2date('Y', get_lastpostdate('blog')); ?></rights>
+<generator uri="http://wordpress.com/" version="1.0.5-dc">WordPress.com Atom API</generator>
+<?php if ( have_posts() ) : while ( have_posts() ) : the_post(); 
+$post = $GLOBALS['post'];
+?>
+<entry>
+		<id><?php the_guid($post->ID); ?></id>
+		<title type="html"><![CDATA[<?php the_title() ?>]]></title>
+		<updated><?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?></updated>
+		<published><?php echo get_post_time('Y-m-d\TH:i:s\Z', true); ?></published>
+		<app:control>
+			<app:draft><?php echo ($GLOBALS['post']->post_status == 'draft' ? 'yes' : 'no') ?></app:draft>
+		</app:control>
+		<author>
+			<name><?php the_author()?></name>
+			<email><?php the_author_email()?></email>
+	<?php if (get_the_author_url() && get_the_author_url() != 'http://') { ?>
+		 <uri><?php the_author_url()?></uri>
+	<?php } ?>
+		</author>
+	<?php if($GLOBALS['post']->post_status == 'attachment') { ?>
+		<link rel="edit" href="<?php $this->the_entry_url() ?>" />
+		<link rel="edit-media" href="<?php $this->the_media_url() ?>" />
+	<?php } else { ?>
+		<link href="<?php permalink_single_rss() ?>" />
+		<link rel="edit" href="<?php $this->the_entry_url() ?>" />
+	<?php } ?>
+	<?php foreach(get_the_category() as $category) { ?>
+	 <category scheme="<?php bloginfo_rss('home') ?>" term="<?php echo $category->cat_name?>" />
+	<?php } ?>   <summary type="html"><![CDATA[<?php the_excerpt_rss(); ?>]]></summary>
+	<?php if ( strlen( $GLOBALS['post']->post_content ) ) : ?>
+	<content type="html"><![CDATA[<?php echo get_the_content('', 0, '') ?>]]></content>
+<?php endif; ?>
+	</entry>
+<?php
+	endwhile; 
+	endif;
+?></feed>
+<?php 
+		$feed = ob_get_contents();
+		ob_end_clean();
+		return $feed;
+	}
+
+	function get_entry($postID, $post_type = 'post') {
+		log_app('function',"get_entry($postID, '$post_type')");
+		ob_start();
+		global $posts, $post, $wp_query, $wp, $wpdb, $blog_id, $post_cache;
+		switch($post_type) {
+			case 'post':
+				$varname = 'p';
+				break;
+			case 'attachment':
+				$varname = 'attachment_id';
+				break;
+		}
+		query_posts($varname . '=' . $postID);
+		if ( have_posts() ) : while ( have_posts() ) : the_post();
+		$post = $GLOBALS['post'];
+		?>
+		<?php log_app('$post',print_r($GLOBALS['post'],true)); ?>
+<entry xmlns="http://www.w3.org/2005/Atom" xmlns:app="http://purl.org/atom/app#" xml:lang="<?php echo get_option('rss_language'); ?>">
+	<id><?php the_guid($post->ID); ?></id>
+	<title type="html"><![CDATA[<?php the_title_rss() ?>]]></title>
+
+	<updated><?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?></updated>
+	<published><?php echo get_post_time('Y-m-d\TH:i:s\Z', true); ?></published>
+	<app:control>
+		<app:draft><?php echo ($GLOBALS['post']->post_status == 'draft' ? 'yes' : 'no') ?></app:draft>
+	</app:control>
+	<author>
+		<name><?php the_author()?></name>
+		<email><?php the_author_email()?></email>
+		<uri><?php the_author_url()?></uri>
+	</author>
+<?php if($GLOBALS['post']->post_type == 'attachment') { ?>
+	<link rel="edit" href="<?php $this->the_entry_url() ?>" />
+	<link rel="edit-media" href="<?php $this->the_media_url() ?>" />
+	<content type="<?php echo $GLOBALS['post']->post_mime_type ?>" src="<?php the_guid(); ?>"/>
+<?php } else { ?>
+	<link href="<?php permalink_single_rss() ?>" />
+	<link rel="edit" href="<?php $this->the_entry_url() ?>" />
+<?php } ?>
+<?php foreach(get_the_category() as $category) { ?>
+	<category scheme="<?php bloginfo_rss('home') ?>" term="<?php echo $category->cat_name?>" />
+	<summary type="html"><![CDATA[<?php the_excerpt_rss(); ?>]]></summary>
+<?php }
+	if ( strlen( $GLOBALS['post']->post_content ) ) : ?>
+	<content type="html"><![CDATA[<?php echo get_the_content('', 0, '') ?>]]></content>
+<?php endif; ?>
+</entry>
+<?php
+		$entry = ob_get_contents();
+		break;
+		endwhile;
+		else:
+			$this->auth_required(__("Access Denied."));
+		endif;
+		ob_end_clean();
+
+		log_app('get_entry returning:',$entry);
+		return $entry; 
+	}
+
+	function ok() { 
+		log_app('Status','200: OK');
+		header('Content-Type: text/plain');
+		status_header('200');
+		exit;
+	}
+
+	function no_content() { 
+		log_app('Status','204: No Content');
+		header('Content-Type: text/plain');
+		status_header('204');
+		echo "Deleted.";
+		exit;
+	}
+
+	function internal_error($msg = 'Internal Server Error') {
+		log_app('Status','500: Server Error');
+		header('Content-Type: text/plain');
+		status_header('500');
+		echo $msg;
+		exit;
+	}
+
+	function bad_request() {
+		log_app('Status','400: Bad Request');
+		header('Content-Type: text/plain');
+		status_header('400');
+		exit;
+	}
+
+	function length_required() {
+		log_app('Status','411: Length Required');
+		header("HTTP/1.1 411 Length Required");
+		header('Content-Type: text/plain');
+		status_header('411');
+		exit;
+	}
+
+	function invalid_media() {
+		log_app('Status','415: Unsupported Media Type');
+		header("HTTP/1.1 415 Unsupported Media Type");
+		header('Content-Type: text/plain');
+		exit;
+	}
+
+	function not_found() {
+		log_app('Status','404: Not Found');
+		header('Content-Type: text/plain');
+		status_header('404');
+		exit;
+	}
+
+	function not_allowed($allow) {
+		log_app('Status','405: Not Allowed');
+		header('Allow: ' . join(',', $allow));
+		status_header('405');
+		exit;
+	}
+
+	function client_error($msg = 'Client Error') {
+		log_app('Status','400: Client Errir');
+		header('Content-Type: text/plain');
+		status_header('400');
+		exit;
+	}
+
+	function created($post_ID, $content, $post_type = 'post') {
+		global $use_querystring;
+		log_app('created()::$post_ID',"$post_ID, $post_type");
+		$edit = $this->get_entry_url($post_ID);
+		switch($post_type) {
+			case 'post':
+				$ctloc = $this->get_entry_url($post_ID);
+				break;
+			case 'attachment':
+				if ($use_querystring) {
+					$edit = get_bloginfo('url') . '/' . $this->script_name . "?action=/attachments&amp;eid=$post_ID";
+				} else {
+					$edit = get_bloginfo('url') . '/' . $this->script_name . "/attachments/$post_ID";
+				}
+				break;
+		}
+		header('Content-Type: application/atom+xml');
+		if(isset($ctloc))
+			header('Content-Location: ' . $ctloc);
+		header('Location: ' . $edit);
+		status_header('201');
+		echo $content;
+		exit;
+	}
+
+	function auth_required($msg) {
+		log_app('Status','401: Auth Required');
+		nocache_headers();
+		header('WWW-Authenticate: Basic realm="WordPress Atom Protocol"');
+		header('WWW-Authenticate: Form action="' . get_option('siteurl') . '/wp-login.php"', false); 
+		header("HTTP/1.1 401 $msg");
+		header('Status: ' . $msg);
+		header('Content-Type: plain/text');
+		echo $msg;
+		exit;
+	}
+
+	function output($xml, $ctype = "application/atom+xml") {
+			status_header('200');
+			$xml = '<?xml version="1.0" encoding="' . strtolower(get_option('blog_charset')) . '"?>'."\n".$xml;
+			header('Connection: close');
+			header('Content-Length: '. strlen($xml));
+			header('Content-Type: ' . $ctype);
+			header('Content-Disposition: attachment; filename=atom.xml');
+			header('Date: '. date('r'));
+			if($this->do_output)
+				echo $xml;
+			log_app('function', "output:\n$xml");
+			exit;
+	}
+
+	function escape(&$array) {
+		global $wpdb;
+
+		foreach ($array as $k => $v) {
+				if (is_array($v)) {
+						$this->escape($array[$k]);
+				} else if (is_object($v)) {
+						//skip
+				} else {
+						$array[$k] = $wpdb->escape($v);
+				}
+		}
+	}
+
+
+
+	/*
+	 * Access credential through various methods and perform login
+	 */
+	function authenticate() {
+		$login_data = array();
+		$already_md5 = false;
+
+		log_app("authenticate()",print_r($_ENV, true));
+
+		// if using mod_rewrite/ENV hack
+		// http://www.besthostratings.com/articles/http-auth-php-cgi.html
+		if(isset($_SERVER['HTTP_AUTHORIZATION'])) {
+			list($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']) = 
+				explode(':', base64_decode(substr($_SERVER['HTTP_AUTHORIZATION'], 6)));
+		}
+
+		// If Basic Auth is working...
+		if(isset($_SERVER['PHP_AUTH_USER']) && isset($_SERVER['PHP_AUTH_PW'])) {
+			$login_data = array('login' => $_SERVER['PHP_AUTH_USER'],	'password' => $_SERVER['PHP_AUTH_PW']);
+		} else {
+			// else, do cookie-based authentication
+			if (function_exists('wp_get_cookie_login')) {
+				$login_data = wp_get_cookie_login();
+				$already_md5 = true;
+			}
+		}
+
+		// call wp_login and set current user
+		if (!empty($login_data) && wp_login($login_data['login'], $login_data['password'], $already_md5)) {
+			 $current_user = new WP_User(0, $login_data['login']);
+			 wp_set_current_user($current_user->ID);
+			log_app("authenticate()",$login_data['login']);
+		}
+	}
+
+	function get_accepted_content_type($types = NULL) {
+
+		if(!isset($types)) {
+			$types = $this->media_content_types;
+		}
+
+		if(!isset($_SERVER['CONTENT_LENGTH']) || !isset($_SERVER['CONTENT_TYPE'])) {
+			$this->length_required();
+		}
+
+		$type = $_SERVER['CONTENT_TYPE'];
+		list($type,$subtype) = explode('/',$type);
+		list($subtype) = explode(";",$subtype); // strip MIME parameters
+		log_app("get_accepted_content_type", "type=$type, subtype=$subtype");
+
+		foreach($types as $t) {
+			list($acceptedType,$acceptedSubtype) = explode('/',$t); 
+			if($acceptedType == '*' || $acceptedType == $type) {
+				if($acceptedSubtype == '*' || $acceptedSubtype == $subtype)
+					return $type;
+			}
+		}
+
+		$this->invalid_media();
+	}
+
+
+
+	function process_conditionals() {
+
+		if(empty($this->params)) return;
+		if($_SERVER['REQUEST_METHOD'] == 'DELETE') return;
+
+		switch($this->params[0]) {
+			case $this->ENTRY_PATH:
+				global $post;
+				$post = wp_get_single_post($this->params[1]);
+				$wp_last_modified = get_post_modified_time('D, d M Y H:i:s', true);
+				$post = NULL;
+				break;
+			case $this->ENTRIES_PATH:
+				$wp_last_modified = mysql2date('D, d M Y H:i:s', get_lastpostmodified('GMT'), 0).' GMT';
+				break;
+			default:
+				return;
+		}
+		$wp_etag = md5($wp_last_modified);
+		@header("Last-Modified: $wp_last_modified");
+		@header("ETag: $wp_etag");
+
+		// Support for Conditional GET
+		if (isset($_SERVER['HTTP_IF_NONE_MATCH'])) 
+			$client_etag = stripslashes($_SERVER['HTTP_IF_NONE_MATCH']);
+		else 
+			$client_etag = false;
+
+		$client_last_modified = trim( $_SERVER['HTTP_IF_MODIFIED_SINCE']);
+		// If string is empty, return 0. If not, attempt to parse into a timestamp
+		$client_modified_timestamp = $client_last_modified ? strtotime($client_last_modified) : 0;
+
+		// Make a timestamp for our most recent modification...
+		$wp_modified_timestamp = strtotime($wp_last_modified);
+
+		if ( ($client_last_modified && $client_etag) ?
+		(($client_modified_timestamp >= $wp_modified_timestamp) && ($client_etag == $wp_etag)) :
+		(($client_modified_timestamp >= $wp_modified_timestamp) || ($client_etag == $wp_etag)) ) {
+			status_header( 304 );
+			exit;
+		}
+	}
+
+
+}
+
+$server = new AtomServer();
+$server->handle_request();
+
+?>