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<?php
/**
* Atom Publishing Protocol support for WordPress
*
* @author Original by Elias Torres <http://torrez.us/archives/2006/08/31/491/>
* @author Modified by Dougal Campbell <http://dougal.gunters.org/>
* @version 1.0.5-dc
*/
/**
* WordPress is handling an Atom Publishing Protocol request.
*
* @var bool
*/
define('APP_REQUEST', true);
/** Set up WordPress environment */
require_once('./wp-load.php');
/** Atom Publishing Protocol Class */
require_once(ABSPATH . WPINC . '/atomlib.php');
/** Admin Image API for metadata updating */
require_once(ABSPATH . '/wp-admin/includes/image.php');
$_SERVER['PATH_INFO'] = preg_replace( '/.*\/wp-app\.php/', '', $_SERVER['REQUEST_URI'] );
/**
* Whether to enable Atom Publishing Protocol Logging.
*
* @name app_logging
* @var int|bool
*/
$app_logging = 0;
/**
* Whether to always authenticate user. Permanently set to true.
*
* @name always_authenticate
* @var int|bool
* @todo Should be an option somewhere
*/
$always_authenticate = 1;
/**
* Writes logging info to a file.
*
* @since 2.2.0
* @uses $app_logging
* @package WordPress
* @subpackage Logging
*
* @param string $label Type of logging
* @param string $msg Information describing logging reason.
*/
function log_app($label,$msg) {
global $app_logging;
if ($app_logging) {
$fp = fopen( 'wp-app.log', 'a+');
$date = gmdate( 'Y-m-d H:i:s' );
fwrite($fp, "\n\n$date - $label\n$msg\n");
fclose($fp);
}
}
/**
* 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("post_status = 'publish'","post_status = 'publish' OR post_status = 'future' OR post_status = 'draft' OR post_status = 'inherit'", $where);
return $where;
}
add_filter('posts_where', 'wa_posts_where_include_drafts_filter');
/**
* 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 = "posts";
/**
* Categories path.
*
* @since 2.2.0
* @var string
*/
var $CATEGORIES_PATH = "categories";
/**
* Media path.
*
* @since 2.2.0
* @var string
*/
var $MEDIA_PATH = "attachments";
/**
* Entry path.
*
* @since 2.2.0
* @var string
*/
var $ENTRY_PATH = "post";
/**
* Service path.
*
* @since 2.2.0
* @var string
*/
var $SERVICE_PATH = "service";
/**
* Media single path.
*
* @since 2.2.0
* @var string
*/
var $MEDIA_SINGLE_PATH = "attachment";
/**
* 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;
/**
* PHP4 constructor - Sets up object properties.
*
* @since 2.2.0
* @return AtomServer
*/
function AtomServer() {
$this->script_name = array_pop(explode('/',$_SERVER['SCRIPT_NAME']));
$this->app_base = get_bloginfo('url') . '/' . $this->script_name . '/';
if ( isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) == 'on' ) {
$this->app_base = preg_replace( '/^http:\/\//', 'https://', $this->app_base );
}
$this->selectors = array(
'@/service$@' =>
array('GET' => 'get_service'),
'@/categories$@' =>
array('GET' => 'get_categories_xml'),
'@/post/(\d+)$@' =>
array('GET' => 'get_post',
'PUT' => 'put_post',
'DELETE' => 'delete_post'),
'@/posts/?(\d+)?$@' =>
array('GET' => 'get_posts',
'POST' => 'create_post'),
'@/attachments/?(\d+)?$@' =>
array('GET' => 'get_attachment',
'POST' => 'create_attachment'),
'@/attachment/file/(\d+)$@' =>
array('GET' => 'get_file',
'PUT' => 'put_file',
'DELETE' => 'delete_file'),
'@/attachment/(\d+)$@' =>
array('GET' => 'get_attachment',
'PUT' => 'put_attachment',
'DELETE' => 'delete_attachment'),
);
}
/**
* 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 = $_SERVER['REQUEST_METHOD'];
log_app('REQUEST',"$method $path\n================");
$this->process_conditionals();
//$this->process_conditionals();
// exception case for HEAD (treat exactly as GET, but don't output)
if($method == 'HEAD') {
$this->do_output = false;
$method = 'GET';
}
// redirect to /service in case no path is found.
if(strlen($path) == 0 || $path == '/') {
$this->redirect($this->get_service_url());
}
// check to see if AtomPub is enabled
if( !get_option( 'enable_app' ) )
$this->forbidden( sprintf( __( 'AtomPub services are disabled on this blog. An admin user can enable them at %s' ), admin_url('options-writing.php') ) );
// dispatch
foreach($this->selectors as $regex => $funcs) {
if(preg_match($regex, $path, $matches)) {
if(isset($funcs[$method])) {
// authenticate regardless of the operation and set the current
// user. each handler will decide if auth is required or not.
if(!$this->authenticate()) {
if ($always_authenticate) {
$this->auth_required('Credentials required.');
}
}
array_shift($matches);
call_user_func_array(array(&$this,$funcs[$method]), $matches);
exit();
} else {
// only allow what we have handlers for...
$this->not_allowed(array_keys($funcs));
}
}
}
// oops, nothing found
$this->not_found();
}
/**
* Retrieve XML for ATOMPUB service.
*
* @since 2.2.0
*/
function get_service() {
log_app('function','get_service()');
if( !current_user_can( 'edit_posts' ) )
$this->auth_required( __( 'Sorry, you do not have the right to access this blog.' ) );
$entries_url = esc_attr($this->get_entries_url());
$categories_url = esc_attr($this->get_categories_url());
$media_url = esc_attr($this->get_attachments_url());
$accepted_media_types = '';
foreach ($this->media_content_types as $med) {
$accepted_media_types = $accepted_media_types . "<accept>" . $med . "</accept>";
}
$atom_prefix="atom";
$atom_blogname=get_bloginfo('name');
$service_doc = <<<EOD
<service xmlns="$this->ATOMPUB_NS" xmlns:$atom_prefix="$this->ATOM_NS">
<workspace>
<$atom_prefix:title>$atom_blogname Workspace</$atom_prefix:title>
<collection href="$entries_url">
<$atom_prefix:title>$atom_blogname Posts</$atom_prefix:title>
<accept>$this->ATOM_CONTENT_TYPE;type=entry</accept>
<categories href="$categories_url" />
</collection>
<collection href="$media_url">
<$atom_prefix:title>$atom_blogname Media</$atom_prefix:title>
$accepted_media_types
</collection>
</workspace>
</service>
EOD;
$this->output($service_doc, $this->SERVICE_CONTENT_TYPE);
}
/**
* Retrieve categories list in XML format.
*
* @since 2.2.0
*/
function get_categories_xml() {
log_app('function','get_categories_xml()');
if( !current_user_can( 'edit_posts' ) )
$this->auth_required( __( 'Sorry, you do not have the right to access this blog.' ) );
$home = esc_attr(get_bloginfo_rss('home'));
$categories = "";
$cats = get_categories("hierarchical=0&hide_empty=0");
foreach ((array) $cats as $cat) {
$categories .= " <category term=\"" . esc_attr($cat->name) . "\" />\n";
}
$output = <<<EOD
<app:categories xmlns:app="$this->ATOMPUB_NS"
xmlns="$this->ATOM_NS"
fixed="yes" scheme="$home">
$categories
</app:categories>
EOD;
$this->output($output, $this->CATEGORIES_CONTENT_TYPE);
}
/**
* Create new post.
*
* @since 2.2.0
*/
function create_post() {
global $blog_id, $user_ID;
$this->get_accepted_content_type($this->atom_content_types);
$parser = new AtomParser();
if(!$parser->parse()) {
$this->client_error();
}
$entry = array_pop($parser->feed->entries);
log_app('Received entry:', print_r($entry,true));
$catnames = array();
foreach($entry->categories as $cat)
array_push($catnames, $cat["term"]);
$wp_cats = get_categories(array('hide_empty' => false));
$post_category = array();
foreach($wp_cats as $cat) {
if(in_array($cat->name, $catnames))
array_push($post_category, $cat->term_id);
}
$publish = (isset($entry->draft) && trim($entry->draft) == 'yes') ? false : true;
$cap = ($publish) ? 'publish_posts' : 'edit_posts';
if(!current_user_can($cap))
$this->auth_required(__('Sorry, you do not have the right to edit/publish new posts.'));
$blog_ID = (int ) $blog_id;
$post_status = ($publish) ? 'publish' : 'draft';
$post_author = (int) $user_ID;
$post_title = $entry->title[1];
$post_content = $entry->content[1];
$post_excerpt = $entry->summary[1];
$pubtimes = $this->get_publish_time($entry->published);
$post_date = $pubtimes[0];
$post_date_gmt = $pubtimes[1];
if ( isset( $_SERVER['HTTP_SLUG'] ) )
$post_name = $_SERVER['HTTP_SLUG'];
$post_data = compact('blog_ID', 'post_author', 'post_date', 'post_date_gmt', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_name');
$this->escape($post_data);
log_app('Inserting Post. Data:', print_r($post_data,true));
$postID = wp_insert_post($post_data);
if ( is_wp_error( $postID ) )
$this->internal_error($postID->get_error_message());
if (!$postID)
$this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
// getting warning here about unable to set headers
// because something in the cache is printing to the buffer
// could we clean up wp_set_post_categories or cache to not print
// this could affect our ability to send back the right headers
@wp_set_post_categories($postID, $post_category);
do_action( 'atompub_create_post', $postID, $entry );
$output = $this->get_entry($postID);
log_app('function',"create_post($postID)");
$this->created($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->auth_required( __( 'Sorry, you do not have the right to access this post.' ) );
$this->set_current_entry($postID);
$output = $this->get_entry($postID);
log_app('function',"get_post($postID)");
$this->output($output);
}
/**
* 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
$this->get_accepted_content_type($this->atom_content_types);
$parser = new AtomParser();
if(!$parser->parse()) {
$this->bad_request();
}
$parsed = array_pop($parser->feed->entries);
log_app('Received UPDATED entry:', print_r($parsed,true));
// check for not found
global $entry;
$this->set_current_entry($postID);
if(!current_user_can('edit_post', $entry['ID']))
$this->auth_required(__('Sorry, you do not have the right to edit this post.'));
$publish = (isset($parsed->draft) && trim($parsed->draft) == 'yes') ? false : true;
$post_status = ($publish) ? 'publish' : 'draft';
extract($entry);
$post_title = $parsed->title[1];
$post_content = $parsed->content[1];
$post_excerpt = $parsed->summary[1];
$pubtimes = $this->get_publish_time($entry->published);
$post_date = $pubtimes[0];
$post_date_gmt = $pubtimes[1];
$pubtimes = $this->get_publish_time($parsed->updated);
$post_modified = $pubtimes[0];
$post_modified_gmt = $pubtimes[1];
$postdata = compact('ID', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt');
$this->escape($postdata);
$result = wp_update_post($postdata);
if (!$result) {
$this->internal_error(__('For some strange yet very annoying reason, this post could not be edited.'));
}
do_action( 'atompub_put_post', $ID, $parsed );
log_app('function',"put_post($postID)");
$this->ok();
}
/**
* Remove post.
*
* @since 2.2.0
*
* @param int $postID Post ID.
*/
function delete_post($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();
}
}
/**
* Retrieve attachment.
*
* @since 2.2.0
*
* @param int $postID Optional. Post ID.
*/
function get_attachment($postID = null) {
if( !current_user_can( 'upload_files' ) )
$this->auth_required( __( 'Sorry, you do not have permission to upload files.' ) );
if (!isset($postID)) {
$this->get_attachments();
} else {
$this->set_current_entry($postID);
$output = $this->get_entry($postID, 'attachment');
log_app('function',"get_attachment($postID)");
$this->output($output);
}
}
/**
* Create new attachment.
*
* @since 2.2.0
*/
function create_attachment() {
$type = $this->get_accepted_content_type();
if(!current_user_can('upload_files'))
$this->auth_required(__('You do not have permission to upload files.'));
$fp = fopen("php://input", "rb");
$bits = null;
while(!feof($fp)) {
$bits .= fread($fp, 4096);
}
fclose($fp);
$slug = '';
if ( isset( $_SERVER['HTTP_SLUG'] ) )
$slug = sanitize_file_name( $_SERVER['HTTP_SLUG'] );
elseif ( isset( $_SERVER['HTTP_TITLE'] ) )
$slug = sanitize_file_name( $_SERVER['HTTP_TITLE'] );
elseif ( empty( $slug ) ) // just make a random name
$slug = substr( md5( uniqid( microtime() ) ), 0, 7);
$ext = preg_replace( '|.*/([a-z0-9]+)|', '$1', $_SERVER['CONTENT_TYPE'] );
$slug = "$slug.$ext";
$file = wp_upload_bits( $slug, NULL, $bits);
log_app('wp_upload_bits returns:',print_r($file,true));
$url = $file['url'];
$file = $file['file'];
do_action('wp_create_file_in_uploads', $file); // replicate
// Construct the attachment array
$attachment = array(
'post_title' => $slug,
'post_content' => $slug,
'post_status' => 'attachment',
'post_parent' => 0,
'post_mime_type' => $type,
'guid' => $url
);
// Save the data
$postID = wp_insert_attachment($attachment, $file);
if (!$postID)
$this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
$output = $this->get_entry($postID, 'attachment');
$this->created($postID, $output, 'attachment');
log_app('function',"create_attachment($postID)");
}
/**
* 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
$this->get_accepted_content_type($this->atom_content_types);
$parser = new AtomParser();
if(!$parser->parse()) {
$this->bad_request();
}
$parsed = array_pop($parser->feed->entries);
// check for not found
global $entry;
$this->set_current_entry($postID);
if(!current_user_can('edit_post', $entry['ID']))
$this->auth_required(__('Sorry, you do not have the right to edit this post.'));
extract($entry);
$post_title = $parsed->title[1];
$post_content = $parsed->summary[1];
$pubtimes = $this->get_publish_time($parsed->updated);
$post_modified = $pubtimes[0];
$post_modified_gmt = $pubtimes[1];
$postdata = compact('ID', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_modified', 'post_modified_gmt');
$this->escape($postdata);
$result = wp_update_post($postdata);
if (!$result) {
$this->internal_error(__('For some strange yet very annoying reason, this post could not be edited.'));
}
log_app('function',"put_attachment($postID)");
$this->ok();
}
/**
* Remove attachment.
*
* @since 2.2.0
*
* @param int $postID Post ID.
*/
function delete_attachment($postID) {
log_app('function',"delete_attachment($postID). File '$location' deleted.");
// check for not found
global $entry;
$this->set_current_entry($postID);
if(!current_user_can('edit_post', $postID)) {
$this->auth_required(__('Sorry, you do not have the right to delete this post.'));
}
$location = get_post_meta($entry['ID'], '_wp_attached_file', true);
$filetype = wp_check_filetype($location);
if(!isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']))
$this->internal_error(__('Error ocurred while accessing post metadata for file location.'));
// delete file
@unlink($location);
// delete attachment
$result = wp_delete_post($postID);
if (!$result) {
$this->internal_error(__('For some strange yet very annoying reason, this post could not be deleted.'));
}
log_app('function',"delete_attachment($postID). File '$location' deleted.");
$this->ok();
}
/**
* Retrieve attachment from post.
*
* @since 2.2.0
*
* @param int $postID Post ID.
*/
function get_file($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);
$location = get_option ('upload_path') . '/' . $location;
$filetype = wp_check_filetype($location);
if(!isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']))
$this->internal_error(__('Error ocurred while accessing post metadata for file location.'));
status_header('200');
header('Content-Type: ' . $entry['post_mime_type']);
header('Connection: close');
if ($fp = fopen($location, "rb")) {
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');
}
log_app('function',"get_file($postID)");
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->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.'));
}
$upload_dir = wp_upload_dir( );
$location = get_post_meta($entry['ID'], '_wp_attached_file', true);
$filetype = wp_check_filetype($location);
$location = "{$upload_dir['basedir']}/{$location}";
if(!isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']))
$this->internal_error(__('Error ocurred while accessing post metadata for file location.'));
$fp = fopen("php://input", "rb");
$localfp = fopen($location, "w+");
while(!feof($fp)) {
fwrite($localfp,fread($fp, 4096));
}
fclose($fp);
fclose($localfp);
$ID = $entry['ID'];
$pubtimes = $this->get_publish_time($entry->published);
$post_date = $pubtimes[0];
$post_date_gmt = $pubtimes[1];
$pubtimes = $this->get_publish_time($parsed->updated);
$post_modified = $pubtimes[0];
$post_modified_gmt = $pubtimes[1];
$post_data = compact('ID', 'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt');
$result = wp_update_post($post_data);
if (!$result) {
$this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
}
wp_update_attachment_metadata( $postID, wp_generate_attachment_metadata( $postID, $location ) );
log_app('function',"put_file($postID)");
$this->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']) && ( $GLOBALS['post_type'] == 'attachment' ) ) {
$path = $this->MEDIA_PATH;
} else {
$path = $this->ENTRIES_PATH;
}
$url = $this->app_base . $path;
if(isset($page) && is_int($page)) {
$url .= "/$page";
}
return $url;
}
/**
* Display entries URL.
*
* @since 2.2.0
*
* @param int $page Page ID.
*/
function the_entries_url($page = null) {
echo $this->get_entries_url($page);
}
/**
* Retrieve categories URL.
*
* @since 2.2.0
*
* @param mixed $deprecated Optional, not used.
* @return string
*/
function get_categories_url($deprecated = '') {
return $this->app_base . $this->CATEGORIES_PATH;
}
/**
* Display category URL.
*
* @since 2.2.0
*/
function the_categories_url() {
echo $this->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->app_base . $this->MEDIA_PATH;
if(isset($page) && is_int($page)) {
$url .= "/$page";
}
return $url;
}
/**
* Display attachment URL.
*
* @since 2.2.0
*
* @param int $page Page ID.
*/
function the_attachments_url($page = null) {
echo $this->get_attachments_url($page);
}
/**
* Retrieve service URL.
*
* @since 2.3.0
*
* @return string
*/
function get_service_url() {
return $this->app_base . $this->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->ID;
}
$url = $this->app_base . $this->ENTRY_PATH . "/$postID";
log_app('function',"get_entry_url() = $url");
return $url;
}
/**
* Display entry URL.
*
* @since 2.7.0
*
* @param int $postID Post ID.
*/
function the_entry_url($postID = null) {
echo $this->get_entry_url($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->ID;
}
$url = $this->app_base . $this->MEDIA_SINGLE_PATH ."/file/$postID";
log_app('function',"get_media_url() = $url");
return $url;
}
/**
* Display the media URL.
*
* @since 2.2.0
*
* @param int $postID Post ID.
*/
function the_media_url($postID = null) {
echo $this->get_media_url($postID);
}
/**
* Set the current entry to post ID.
*
* @since 2.2.0
*
* @param int $postID Post ID.
*/
function set_current_entry($postID) {
global $entry;
log_app('function',"set_current_entry($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;
}
/**
* 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, $post_type = 'post') {
log_app('function',"get_posts($page, '$post_type')");
$feed = $this->get_feed($page, $post_type);
$this->output($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, $post_type = 'attachment') {
log_app('function',"get_attachments($page, '$post_type')");
$GLOBALS['post_type'] = $post_type;
$feed = $this->get_feed($page, $post_type);
$this->output($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, $blog_id;
log_app('function',"get_feed($page, '$post_type')");
ob_start();
$this->ENTRY_PATH = $post_type;
if(!isset($page)) {
$page = 1;
}
$page = (int) $page;
$count = get_option('posts_per_rss');
wp('posts_per_page=' . $count . '&offset=' . ($count * ($page-1) . '&orderby=modified'));
$post = $GLOBALS['post'];
$posts = $GLOBALS['posts'];
$wp = $GLOBALS['wp'];
$wp_query = $GLOBALS['wp_query'];
$wpdb = $GLOBALS['wpdb'];
$blog_id = (int) $GLOBALS['blog_id'];
log_app('function',"query_posts(# " . print_r($wp_query, true) . "#)");
log_app('function',"total_count(# $wp_query->max_num_pages #)");
$last_page = $wp_query->max_num_pages;
$next_page = (($page + 1) > $last_page) ? NULL : $page + 1;
$prev_page = ($page - 1) < 1 ? NULL : $page - 1;
$last_page = ((int)$last_page == 1 || (int)$last_page == 0) ? NULL : (int) $last_page;
$self_page = $page > 1 ? $page : NULL;
?><feed xmlns="<?php echo $this->ATOM_NS ?>" xmlns:app="<?php echo $this->ATOMPUB_NS ?>" xml:lang="<?php echo get_option('rss_language'); ?>">
<id><?php $this->the_entries_url() ?></id>
<updated><?php echo mysql2date('Y-m-d\TH:i:s\Z', get_lastpostmodified('GMT'), false); ?></updated>
<title type="text"><?php bloginfo_rss('name') ?></title>
<subtitle type="text"><?php bloginfo_rss("description") ?></subtitle>
<link rel="first" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url() ?>" />
<?php if(isset($prev_page)): ?>
<link rel="previous" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($prev_page) ?>" />
<?php endif; ?>
<?php if(isset($next_page)): ?>
<link rel="next" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($next_page) ?>" />
<?php endif; ?>
<link rel="last" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($last_page) ?>" />
<link rel="self" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($self_page) ?>" />
<rights type="text">Copyright <?php echo date('Y'); ?></rights>
<?php the_generator( 'atom' ); ?>
<?php if ( have_posts() ) {
while ( have_posts() ) {
the_post();
$this->echo_entry();
}
}
?></feed>
<?php
$feed = ob_get_contents();
ob_end_clean();
return $feed;
}
/**
* 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, $post_type = 'post') {
log_app('function',"get_entry($postID, '$post_type')");
ob_start();
switch($post_type) {
case 'post':
$varname = 'p';
break;
case 'attachment':
$this->ENTRY_PATH = 'attachment';
$varname = 'attachment_id';
break;
}
query_posts($varname . '=' . $postID);
if ( have_posts() ) {
while ( have_posts() ) {
the_post();
$this->echo_entry();
log_app('$post',print_r($GLOBALS['post'],true));
$entry = ob_get_contents();
break;
}
}
ob_end_clean();
log_app('get_entry returning:',$entry);
return $entry;
}
/**
* Display post content XML.
*
* @since 2.3.0
*/
function echo_entry() { ?>
<entry xmlns="<?php echo $this->ATOM_NS ?>"
xmlns:app="<?php echo $this->ATOMPUB_NS ?>" xml:lang="<?php echo get_option('rss_language'); ?>">
<id><?php the_guid($GLOBALS['post']->ID); ?></id>
<?php list($content_type, $content) = prep_atom_text_construct(get_the_title()); ?>
<title type="<?php echo $content_type ?>"><?php echo $content ?></title>
<updated><?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?></updated>
<published><?php echo get_post_time('Y-m-d\TH:i:s\Z', true); ?></published>
<app:edited><?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?></app:edited>
<app:control>
<app:draft><?php echo ($GLOBALS['post']->post_status == 'draft' ? 'yes' : 'no') ?></app:draft>
</app:control>
<author>
<name><?php the_author()?></name>
<?php if ( get_the_author_meta('url') && get_the_author_meta('url') != 'http://' ) { ?>
<uri><?php the_author_meta('url') ?></uri>
<?php } ?>
</author>
<?php if($GLOBALS['post']->post_type == 'attachment') { ?>
<link rel="edit-media" href="<?php $this->the_media_url() ?>" />
<content type="<?php echo $GLOBALS['post']->post_mime_type ?>" src="<?php the_guid(); ?>"/>
<?php } else { ?>
<link href="<?php the_permalink_rss() ?>" />
<?php if ( strlen( $GLOBALS['post']->post_content ) ) :
list($content_type, $content) = prep_atom_text_construct(get_the_content()); ?>
<content type="<?php echo $content_type ?>"><?php echo $content ?></content>
<?php endif; ?>
<?php } ?>
<link rel="edit" href="<?php $this->the_entry_url() ?>" />
<?php the_category_rss( 'atom' ); ?>
<?php list($content_type, $content) = prep_atom_text_construct(get_the_excerpt()); ?>
<summary type="<?php echo $content_type ?>"><?php echo $content ?></summary>
</entry>
<?php }
/**
* Set 'OK' (200) status header.
*
* @since 2.2.0
*/
function ok() {
log_app('Status','200: OK');
header('Content-Type: text/plain');
status_header('200');
exit;
}
/**
* Set 'No Content' (204) status header.
*
* @since 2.2.0
*/
function no_content() {
log_app('Status','204: No Content');
header('Content-Type: text/plain');
status_header('204');
echo "Moved to Trash.";
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') {
log_app('Status','500: Server Error');
header('Content-Type: text/plain');
status_header('500');
echo $msg;
exit;
}
/**
* Set 'Bad Request' (400) status header.
*
* @since 2.2.0
*/
function bad_request() {
log_app('Status','400: Bad Request');
header('Content-Type: text/plain');
status_header('400');
exit;
}
/**
* Set 'Length Required' (411) status header.
*
* @since 2.2.0
*/
function length_required() {
log_app('Status','411: Length Required');
header("HTTP/1.1 411 Length Required");
header('Content-Type: text/plain');
status_header('411');
exit;
}
/**
* Set 'Unsupported Media Type' (415) status header.
*
* @since 2.2.0
*/
function invalid_media() {
log_app('Status','415: Unsupported Media Type');
header("HTTP/1.1 415 Unsupported Media Type");
header('Content-Type: text/plain');
exit;
}
/**
* Set 'Forbidden' (403) status header.
*
* @since 2.6.0
*/
function forbidden($reason='') {
log_app('Status','403: Forbidden');
header('Content-Type: text/plain');
status_header('403');
echo $reason;
exit;
}
/**
* Set 'Not Found' (404) status header.
*
* @since 2.2.0
*/
function not_found() {
log_app('Status','404: Not Found');
header('Content-Type: text/plain');
status_header('404');
exit;
}
/**
* Set 'Not Allowed' (405) status header.
*
* @since 2.2.0
*/
function not_allowed($allow) {
log_app('Status','405: Not Allowed');
header('Allow: ' . join(',', $allow));
status_header('405');
exit;
}
/**
* Display Redirect (302) content and set status headers.
*
* @since 2.3.0
*/
function redirect($url) {
log_app('Status','302: Redirect');
$escaped_url = esc_attr($url);
$content = <<<EOD
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html>
<head>
<title>302 Found</title>
</head>
<body>
<h1>Found</h1>
<p>The document has moved <a href="$escaped_url">here</a>.</p>
</body>
</html>
EOD;
header('HTTP/1.1 302 Moved');
header('Content-Type: text/html');
header('Location: ' . $url);
echo $content;
exit;
}
/**
* Set 'Client Error' (400) status header.
*
* @since 2.2.0
*/
function client_error($msg = 'Client Error') {
log_app('Status','400: 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, $post_type = 'post') {
log_app('created()::$post_ID',"$post_ID, $post_type");
$edit = $this->get_entry_url($post_ID);
switch($post_type) {
case 'post':
$ctloc = $this->get_entry_url($post_ID);
break;
case 'attachment':
$edit = $this->app_base . "attachments/$post_ID";
break;
}
header("Content-Type: $this->ATOM_CONTENT_TYPE");
if(isset($ctloc))
header('Content-Location: ' . $ctloc);
header('Location: ' . $edit);
status_header('201');
echo $content;
exit;
}
/**
* Set 'Auth Required' (401) headers.
*
* @since 2.2.0
*
* @param string $msg Status header content and HTML content.
*/
function auth_required($msg) {
log_app('Status','401: Auth Required');
nocache_headers();
header('WWW-Authenticate: Basic realm="WordPress Atom Protocol"');
header("HTTP/1.1 401 $msg");
header('Status: 401 ' . $msg);
header('Content-Type: text/html');
$content = <<<EOD
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html>
<head>
<title>401 Unauthorized</title>
</head>
<body>
<h1>401 Unauthorized</h1>
<p>$msg</p>
</body>
</html>
EOD;
echo $content;
exit;
}
/**
* 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');
$xml = '<?xml version="1.0" encoding="' . strtolower(get_option('blog_charset')) . '"?>'."\n".$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;
}
/**
* Sanitize content for database usage.
*
* @since 2.2.0
*
* @param array $array Sanitize array and multi-dimension array.
*/
function escape(&$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.
*
* @since 2.2.0
*
* @return bool
*/
function authenticate() {
log_app("authenticate()",print_r($_ENV, true));
// if using mod_rewrite/ENV hack
// http://www.besthostratings.com/articles/http-auth-php-cgi.html
if(isset($_SERVER['HTTP_AUTHORIZATION'])) {
list($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']) =
explode(':', base64_decode(substr($_SERVER['HTTP_AUTHORIZATION'], 6)));
} 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($_SERVER['PHP_AUTH_USER']) && isset($_SERVER['PHP_AUTH_PW'])) {
log_app("Basic Auth",$_SERVER['PHP_AUTH_USER']);
$user = wp_authenticate($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']);
if ( $user && !is_wp_error($user) ) {
wp_set_current_user($user->ID);
log_app("authenticate()", $user->user_login);
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 = $this->media_content_types;
}
if(!isset($_SERVER['CONTENT_LENGTH']) || !isset($_SERVER['CONTENT_TYPE'])) {
$this->length_required();
}
$type = $_SERVER['CONTENT_TYPE'];
list($type,$subtype) = explode('/',$type);
list($subtype) = explode(";",$subtype); // strip MIME parameters
log_app("get_accepted_content_type", "type=$type, subtype=$subtype");
foreach($types as $t) {
list($acceptedType,$acceptedSubtype) = explode('/',$t);
if($acceptedType == '*' || $acceptedType == $type) {
if($acceptedSubtype == '*' || $acceptedSubtype == $subtype)
return $type . "/" . $subtype;
}
}
$this->invalid_media();
}
/**
* Process conditionals for posts.
*
* @since 2.2.0
*/
function process_conditionals() {
if(empty($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;
}
}
/**
* 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("/(\d{4}-\d{2}-\d{2})T(\d{2}\:\d{2}\:\d{2})\.?\d{0,3}(Z|[+-]+\d{2}\:\d{2})/", $str, $match))
return false;
if($match[3] == 'Z')
$match[3] == '+0000';
return strtotime($match[1] . " " . $match[2] . " " . $match[3]);
}
/**
* Retrieve published time to display in XML.
*
* @since 2.3.0
*
* @param string $published Time string.
* @return string
*/
function get_publish_time($published) {
$pubtime = $this->rfc3339_str2time($published);
if(!$pubtime) {
return array(current_time('mysql'),current_time('mysql',1));
} else {
return array(date("Y-m-d H:i:s", $pubtime), gmdate("Y-m-d H:i:s", $pubtime));
}
}
}
/**
* AtomServer
* @var AtomServer
* @global object $server
*/
$server = new AtomServer();
$server->handle_request();
?>
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