wp-includes/class-wp-atom-server.php

   1 <?php
   2
   3 /**
   4  * WordPress AtomPub API implementation.
   5  *
   6  * @package WordPress
   7  * @subpackage Publishing
   8  * @since 2.2.0
   9  */
  10 class wp_atom_server {
  11
  12         /**
  13          * ATOM content type.
  14          *
  15          * @since 2.2.0
  16          * @var string
  17          */
  18         var $ATOM_CONTENT_TYPE = 'application/atom+xml';
  19
  20         /**
  21          * Categories ATOM content type.
  22          *
  23          * @since 2.2.0
  24          * @var string
  25          */
  26         var $CATEGORIES_CONTENT_TYPE = 'application/atomcat+xml';
  27
  28         /**
  29          * Service ATOM content type.
  30          *
  31          * @since 2.3.0
  32          * @var string
  33          */
  34         var $SERVICE_CONTENT_TYPE = 'application/atomsvc+xml';
  35
  36         /**
  37          * ATOM XML namespace.
  38          *
  39          * @since 2.3.0
  40          * @var string
  41          */
  42         var $ATOM_NS = 'http://www.w3.org/2005/Atom';
  43
  44         /**
  45          * ATOMPUB XML namespace.
  46          *
  47          * @since 2.3.0
  48          * @var string
  49          */
  50         var $ATOMPUB_NS = 'http://www.w3.org/2007/app';
  51
  52         /**
  53          * Entries path.
  54          *
  55          * @since 2.2.0
  56          * @var string
  57          */
  58         var $ENTRIES_PATH = "posts";
  59
  60         /**
  61          * Categories path.
  62          *
  63          * @since 2.2.0
  64          * @var string
  65          */
  66         var $CATEGORIES_PATH = "categories";
  67
  68         /**
  69          * Media path.
  70          *
  71          * @since 2.2.0
  72          * @var string
  73          */
  74         var $MEDIA_PATH = "attachments";
  75
  76         /**
  77          * Entry path.
  78          *
  79          * @since 2.2.0
  80          * @var string
  81          */
  82         var $ENTRY_PATH = "post";
  83
  84         /**
  85          * Service path.
  86          *
  87          * @since 2.2.0
  88          * @var string
  89          */
  90         var $SERVICE_PATH = "service";
  91
  92         /**
  93          * Media single path.
  94          *
  95          * @since 2.2.0
  96          * @var string
  97          */
  98         var $MEDIA_SINGLE_PATH = "attachment";
  99
 100         /**
 101          * ATOMPUB parameters.
 102          *
 103          * @since 2.2.0
 104          * @var array
 105          */
 106         var $params = array();
 107
 108         /**
 109          * Supported ATOMPUB media types.
 110          *
 111          * @since 2.3.0
 112          * @var array
 113          */
 114         var $media_content_types = array('image/*','audio/*','video/*');
 115
 116         /**
 117          * ATOMPUB content type(s).
 118          *
 119          * @since 2.2.0
 120          * @var array
 121          */
 122         var $atom_content_types = array('application/atom+xml');
 123
 124         /**
 125          * ATOMPUB methods.
 126          *
 127          * @since 2.2.0
 128          * @var unknown_type
 129          */
 130         var $selectors = array();
 131
 132         /**
 133          * Whether to do output.
 134          *
 135          * Support for head.
 136          *
 137          * @since 2.2.0
 138          * @var bool
 139          */
 140         var $do_output = true;
 141
 142         /**
 143          * Constructor - Sets up object properties.
 144          *
 145          * @since 2.2.0
 146          * @return AtomServer
 147          */
 148         function __construct() {
 149
 150                 $var_by_ref = explode( '/', $_SERVER['SCRIPT_NAME'] );
 151                 $this->script_name = array_pop( $var_by_ref );
 152                 $this->app_base = site_url( $this->script_name . '/' );
 153
 154                 $this->selectors = array(
 155                         '@/service$@' =>
 156                                 array('GET' => 'get_service'),
 157                         '@/categories$@' =>
 158                                 array('GET' => 'get_categories_xml'),
 159                         '@/post/(\d+)$@' =>
 160                                 array('GET' => 'get_post',
 161                                                 'PUT' => 'put_post',
 162                                                 'DELETE' => 'delete_post'),
 163                         '@/posts/?(\d+)?$@' =>
 164                                 array('GET' => 'get_posts',
 165                                                 'POST' => 'create_post'),
 166                         '@/attachments/?(\d+)?$@' =>
 167                                 array('GET' => 'get_attachment',
 168                                                 'POST' => 'create_attachment'),
 169                         '@/attachment/file/(\d+)$@' =>
 170                                 array('GET' => 'get_file',
 171                                                 'PUT' => 'put_file',
 172                                                 'DELETE' => 'delete_file'),
 173                         '@/attachment/(\d+)$@' =>
 174                                 array('GET' => 'get_attachment',
 175                                                 'PUT' => 'put_attachment',
 176                                                 'DELETE' => 'delete_attachment'),
 177                 );
 178         }
 179
 180         /**
 181          * Handle ATOMPUB request.
 182          *
 183          * @since 2.2.0
 184          */
 185         function handle_request() {
 186
 187                 if ( !empty( $_SERVER['ORIG_PATH_INFO'] ) )
 188                         $path = $_SERVER['ORIG_PATH_INFO'];
 189                 else
 190                         $path = $_SERVER['PATH_INFO'];
 191
 192                 $method = $_SERVER['REQUEST_METHOD'];
 193
 194                 $this->process_conditionals();
 195                 //$this->process_conditionals();
 196
 197                 // exception case for HEAD (treat exactly as GET, but don't output)
 198                 if ($method == 'HEAD') {
 199                         $this->do_output = false;
 200                         $method = 'GET';
 201                 }
 202
 203                 // redirect to /service in case no path is found.
 204                 if (strlen($path) == 0 || $path == '/')
 205                         $this->redirect($this->get_service_url());
 206
 207                 // check to see if AtomPub is enabled
 208                 if ( !get_option( 'enable_app' ) )
 209                         $this->forbidden( sprintf( __( 'AtomPub services are disabled on this site. An admin user can enable them at %s' ), admin_url('options-writing.php') ) );
 210
 211                 // dispatch
 212                 foreach ( $this->selectors as $regex => $funcs ) {
 213                         if ( preg_match($regex, $path, $matches) ) {
 214                                 if ( isset($funcs[$method]) ) {
 215
 216                                         // authenticate regardless of the operation and set the current
 217                                         // user. each handler will decide if auth is required or not.
 218                                         if ( !$this->authenticate() ) {
 219                                                 $this->auth_required('Credentials required.');
 220                                         }
 221
 222                                         array_shift($matches);
 223                                         call_user_func_array(array($this,$funcs[$method]), $matches);
 224                                         wp_die();
 225                                 } else {
 226                                         // only allow what we have handlers for...
 227                                         $this->not_allowed(array_keys($funcs));
 228                                 }
 229                         }
 230                 }
 231
 232                 // oops, nothing found
 233                 $this->not_found();
 234         }
 235
 236         /**
 237          * Retrieve XML for ATOMPUB service.
 238          *
 239          * @since 2.2.0
 240          */
 241         function get_service() {
 242
 243                 if ( !current_user_can( 'edit_posts' ) )
 244                         $this->auth_required( __( 'Sorry, you do not have the right to access this site.' ) );
 245
 246                 $entries_url = esc_attr($this->get_entries_url());
 247                 $categories_url = esc_attr($this->get_categories_url());
 248                 $media_url = esc_attr($this->get_attachments_url());
 249                 $accepted_media_types = '';
 250                 foreach ($this->media_content_types as $med) {
 251                         $accepted_media_types = $accepted_media_types . "<accept>" . $med . "</accept>";
 252                 }
 253                 $atom_prefix="atom";
 254                 $atom_blogname = get_bloginfo('name');
 255                 $service_doc = <<<EOD
 256 <service xmlns="$this->ATOMPUB_NS" xmlns:$atom_prefix="$this->ATOM_NS">
 257   <workspace>
 258     <$atom_prefix:title>$atom_blogname Workspace</$atom_prefix:title>
 259     <collection href="$entries_url">
 260       <$atom_prefix:title>$atom_blogname Posts</$atom_prefix:title>
 261       <accept>$this->ATOM_CONTENT_TYPE;type=entry</accept>
 262       <categories href="$categories_url" />
 263     </collection>
 264     <collection href="$media_url">
 265       <$atom_prefix:title>$atom_blogname Media</$atom_prefix:title>
 266       $accepted_media_types
 267     </collection>
 268   </workspace>
 269 </service>
 270
 271 EOD;
 272
 273                 $this->output($service_doc, $this->SERVICE_CONTENT_TYPE);
 274         }
 275
 276         /**
 277          * Retrieve categories list in XML format.
 278          *
 279          * @since 2.2.0
 280          */
 281         function get_categories_xml() {
 282
 283                 if ( !current_user_can( 'edit_posts' ) )
 284                         $this->auth_required( __( 'Sorry, you do not have the right to access this site.' ) );
 285
 286                 $home = esc_attr(get_bloginfo_rss('url'));
 287
 288                 $categories = "";
 289                 $cats = get_categories(array('hierarchical' => 0, 'hide_empty' => 0));
 290                 foreach ( (array) $cats as $cat ) {
 291                         $categories .= "    <category term=\"" . esc_attr($cat->name) . "\" />\n";
 292                 }
 293                 $output = <<<EOD
 294 <app:categories xmlns:app="$this->ATOMPUB_NS"
 295         xmlns="$this->ATOM_NS"
 296         fixed="yes" scheme="$home">
 297         $categories
 298 </app:categories>
 299 EOD;
 300                 $this->output($output, $this->CATEGORIES_CONTENT_TYPE);
 301         }
 302
 303         /**
 304          * Create new post.
 305          *
 306          * @since 2.2.0
 307          */
 308         function create_post() {
 309                 global $user_ID;
 310                 $this->get_accepted_content_type($this->atom_content_types);
 311
 312                 $parser = new AtomParser();
 313                 if ( !$parser->parse() )
 314                         $this->client_error();
 315
 316                 $entry = array_pop($parser->feed->entries);
 317
 318                 $catnames = array();
 319                 if ( !empty( $entry->categories ) ) {
 320                         foreach ( $entry->categories as $cat ) {
 321                                 array_push($catnames, $cat["term"]);
 322                         }
 323                 }
 324
 325                 $wp_cats = get_categories(array('hide_empty' => false));
 326
 327                 $post_category = array();
 328
 329                 foreach ( $wp_cats as $cat ) {
 330                         if ( in_array($cat->name, $catnames) )
 331                                 array_push($post_category, $cat->term_id);
 332                 }
 333
 334                 $publish = ! ( isset( $entry->draft ) && 'yes' == trim( $entry->draft ) );
 335
 336                 $cap = ($publish) ? 'publish_posts' : 'edit_posts';
 337
 338                 if ( !current_user_can($cap) )
 339                         $this->auth_required(__('Sorry, you do not have the right to edit/publish new posts.'));
 340
 341                 $blog_ID = get_current_blog_id();
 342                 $post_status = ($publish) ? 'publish' : 'draft';
 343                 $post_author = (int) $user_ID;
 344
 345                 $post_title   = '';
 346                 $post_content = '';
 347                 $post_excerpt = '';
 348                 $pubtimes     = '';
 349
 350                 if ( isset( $entry->title ) && is_array( $entry->title ) && !empty( $entry->title[1] ) )
 351                         $post_title = (string) $entry->title[1];
 352                 if ( isset( $entry->content ) && is_array( $entry->content ) && !empty( $entry->content[1] ) )
 353                         $post_content = (string) $entry->content[1];
 354                 if ( isset( $entry->summary ) && is_array( $entry->summary ) && !empty( $entry->summary[1] ) )
 355                         $post_excerpt = (string) $entry->summary[1];
 356                 if ( !empty( $entry->published ) )
 357                         $pubtimes = (string) $entry->published;
 358
 359                 $pubtimes = $this->get_publish_time( $pubtimes );
 360
 361                 $post_date = $pubtimes[0];
 362                 $post_date_gmt = $pubtimes[1];
 363
 364                 if ( isset( $_SERVER['HTTP_SLUG'] ) )
 365                         $post_name = $_SERVER['HTTP_SLUG'];
 366
 367                 $post_data = compact('blog_ID', 'post_author', 'post_date', 'post_date_gmt', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_name');
 368
 369                 $this->escape($post_data);
 370
 371                 $postID = wp_insert_post($post_data);
 372                 if ( is_wp_error( $postID ) )
 373                         $this->internal_error($postID->get_error_message());
 374
 375                 if ( !$postID )
 376                         $this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
 377
 378                 // getting warning here about unable to set headers
 379                 // because something in the cache is printing to the buffer
 380                 // could we clean up wp_set_post_categories or cache to not print
 381                 // this could affect our ability to send back the right headers
 382                 @wp_set_post_categories($postID, $post_category);
 383
 384                 do_action( 'atompub_create_post', $postID, $entry );
 385
 386                 $output = $this->get_entry($postID);
 387
 388                 $this->created($postID, $output);
 389         }
 390
 391         /**
 392          * Retrieve post.
 393          *
 394          * @since 2.2.0
 395          *
 396          * @param int $postID Post ID.
 397          */
 398         function get_post($postID) {
 399                 global $entry;
 400
 401                 if ( !current_user_can( 'edit_post', $postID ) )
 402                         $this->auth_required( __( 'Sorry, you do not have the right to access this post.' ) );
 403
 404                 $this->set_current_entry($postID);
 405                 $output = $this->get_entry($postID);
 406                 $this->output($output);
 407
 408         }
 409
 410         /**
 411          * Update post.
 412          *
 413          * @since 2.2.0
 414          *
 415          * @param int $postID Post ID.
 416          */
 417         function put_post($postID) {
 418                 // checked for valid content-types (atom+xml)
 419                 // quick check and exit
 420                 $this->get_accepted_content_type($this->atom_content_types);
 421
 422                 $parser = new AtomParser();
 423                 if ( !$parser->parse() )
 424                         $this->bad_request();
 425
 426                 $parsed = array_pop($parser->feed->entries);
 427
 428                 // check for not found
 429                 global $entry;
 430                 $this->set_current_entry($postID);
 431
 432                 if ( !current_user_can('edit_post', $entry['ID']) )
 433                         $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
 434
 435                 $publish = ! ( isset($parsed->draft) && 'yes' == trim($parsed->draft) );
 436                 $post_status = ($publish) ? 'publish' : 'draft';
 437
 438                 extract($entry);
 439
 440                 $post_title = $parsed->title[1];
 441                 $post_content = $parsed->content[1];
 442                 $post_excerpt = $parsed->summary[1];
 443                 $pubtimes = $this->get_publish_time($entry->published);
 444                 $post_date = $pubtimes[0];
 445                 $post_date_gmt = $pubtimes[1];
 446                 $pubtimes = $this->get_publish_time($parsed->updated);
 447                 $post_modified = $pubtimes[0];
 448                 $post_modified_gmt = $pubtimes[1];
 449
 450                 $postdata = compact('ID', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt');
 451                 $this->escape($postdata);
 452
 453                 $result = wp_update_post($postdata);
 454
 455                 if ( !$result )
 456                         $this->internal_error(__('For some strange yet very annoying reason, this post could not be edited.'));
 457
 458                 do_action( 'atompub_put_post', $ID, $parsed );
 459
 460                 $this->ok();
 461         }
 462
 463         /**
 464          * Remove post.
 465          *
 466          * @since 2.2.0
 467          *
 468          * @param int $postID Post ID.
 469          */
 470         function delete_post($postID) {
 471
 472                 // check for not found
 473                 global $entry;
 474                 $this->set_current_entry($postID);
 475
 476                 if ( !current_user_can('edit_post', $postID) )
 477                         $this->auth_required(__('Sorry, you do not have the right to delete this post.'));
 478
 479                 if ( $entry['post_type'] == 'attachment' ) {
 480                         $this->delete_attachment($postID);
 481                 } else {
 482                         $result = wp_delete_post($postID);
 483
 484                         if ( !$result ) {
 485                                 $this->internal_error(__('For some strange yet very annoying reason, this post could not be deleted.'));
 486                         }
 487
 488                         $this->ok();
 489                 }
 490
 491         }
 492
 493         /**
 494          * Retrieve attachment.
 495          *
 496          * @since 2.2.0
 497          *
 498          * @param int $postID Optional. Post ID.
 499          */
 500         function get_attachment($postID = null) {
 501                 if ( !current_user_can( 'upload_files' ) )
 502                         $this->auth_required( __( 'You do not have permission to upload files.' ) );
 503
 504                 if ( !isset($postID) ) {
 505                         $this->get_attachments();
 506                 } else {
 507                         $this->set_current_entry($postID);
 508                         $output = $this->get_entry($postID, 'attachment');
 509                         $this->output($output);
 510                 }
 511         }
 512
 513         /**
 514          * Create new attachment.
 515          *
 516          * @since 2.2.0
 517          */
 518         function create_attachment() {
 519
 520                 $type = $this->get_accepted_content_type();
 521
 522                 if ( !current_user_can('upload_files') )
 523                         $this->auth_required( __( 'You do not have permission to upload files.' ) );
 524
 525                 $fp = fopen("php://input", "rb");
 526                 $bits = null;
 527                 while ( !feof($fp) ) {
 528                         $bits .= fread($fp, 4096);
 529                 }
 530                 fclose($fp);
 531
 532                 $slug = '';
 533                 if ( isset( $_SERVER['HTTP_SLUG'] ) )
 534                         $slug = $_SERVER['HTTP_SLUG'];
 535                 elseif ( isset( $_SERVER['HTTP_TITLE'] ) )
 536                         $slug = $_SERVER['HTTP_TITLE'];
 537                 elseif ( empty( $slug ) ) // just make a random name
 538                         $slug = substr( md5( uniqid( microtime() ) ), 0, 7);
 539                 $ext = preg_replace( '|.*/([a-z0-9]+)|', '$1', $_SERVER['CONTENT_TYPE'] );
 540                 $slug = sanitize_file_name( "$slug.$ext" );
 541                 $file = wp_upload_bits( $slug, null, $bits);
 542
 543                 $url = $file['url'];
 544                 $file = $file['file'];
 545
 546                 do_action('wp_create_file_in_uploads', $file); // replicate
 547
 548                 // Construct the attachment array
 549                 $attachment = array(
 550                         'post_title' => $slug,
 551                         'post_content' => $slug,
 552                         'post_status' => 'attachment',
 553                         'post_parent' => 0,
 554                         'post_mime_type' => $type,
 555                         'guid' => $url
 556                         );
 557
 558                 // Save the data
 559                 $postID = wp_insert_attachment($attachment, $file);
 560
 561                 if (!$postID)
 562                         $this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
 563
 564                 $output = $this->get_entry($postID, 'attachment');
 565
 566                 $this->created($postID, $output, 'attachment');
 567         }
 568
 569         /**
 570          * Update attachment.
 571          *
 572          * @since 2.2.0
 573          *
 574          * @param int $postID Post ID.
 575          */
 576         function put_attachment($postID) {
 577                 // checked for valid content-types (atom+xml)
 578                 // quick check and exit
 579                 $this->get_accepted_content_type($this->atom_content_types);
 580
 581                 $parser = new AtomParser();
 582                 if (!$parser->parse()) {
 583                         $this->bad_request();
 584                 }
 585
 586                 $parsed = array_pop($parser->feed->entries);
 587
 588                 // check for not found
 589                 global $entry;
 590                 $this->set_current_entry($postID);
 591
 592                 if ( !current_user_can('edit_post', $entry['ID']) )
 593                         $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
 594
 595                 extract($entry);
 596
 597                 $post_title = $parsed->title[1];
 598                 $post_content = $parsed->summary[1];
 599                 $pubtimes = $this->get_publish_time($parsed->updated);
 600                 $post_modified = $pubtimes[0];
 601                 $post_modified_gmt = $pubtimes[1];
 602
 603                 $postdata = compact('ID', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_modified', 'post_modified_gmt');
 604                 $this->escape($postdata);
 605
 606                 $result = wp_update_post($postdata);
 607
 608                 if ( !$result )
 609                         $this->internal_error(__('For some strange yet very annoying reason, this post could not be edited.'));
 610
 611                 $this->ok();
 612         }
 613
 614         /**
 615          * Remove attachment.
 616          *
 617          * @since 2.2.0
 618          *
 619          * @param int $postID Post ID.
 620          */
 621         function delete_attachment($postID) {
 622
 623                 // check for not found
 624                 global $entry;
 625                 $this->set_current_entry($postID);
 626
 627                 if ( !current_user_can('edit_post', $postID) )
 628                         $this->auth_required(__('Sorry, you do not have the right to delete this post.'));
 629
 630                 $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
 631                 $filetype = wp_check_filetype($location);
 632
 633                 if ( !isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']) )
 634                         $this->internal_error(__('Error occurred while accessing post metadata for file location.'));
 635
 636                 // delete file
 637                 @unlink($location);
 638
 639                 // delete attachment
 640                 $result = wp_delete_post($postID);
 641
 642                 if ( !$result )
 643                         $this->internal_error(__('For some strange yet very annoying reason, this post could not be deleted.'));
 644
 645                 $this->ok();
 646         }
 647
 648         /**
 649          * Retrieve attachment from post.
 650          *
 651          * @since 2.2.0
 652          *
 653          * @param int $postID Post ID.
 654          */
 655         function get_file($postID) {
 656
 657                 // check for not found
 658                 global $entry;
 659                 $this->set_current_entry($postID);
 660
 661                 // then whether user can edit the specific post
 662                 if ( !current_user_can('edit_post', $postID) )
 663                         $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
 664
 665                 $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
 666                 $location = get_option ('upload_path') . '/' . $location;
 667                 $filetype = wp_check_filetype($location);
 668
 669                 if ( !isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']) )
 670                         $this->internal_error(__('Error occurred while accessing post metadata for file location.'));
 671
 672                 status_header('200');
 673                 header('Content-Type: ' . $entry['post_mime_type']);
 674                 header('Connection: close');
 675
 676                 if ( $fp = fopen($location, "rb") ) {
 677                         status_header('200');
 678                         header('Content-Type: ' . $entry['post_mime_type']);
 679                         header('Connection: close');
 680
 681                         while ( !feof($fp) ) {
 682                                 echo fread($fp, 4096);
 683                         }
 684
 685                         fclose($fp);
 686                 } else {
 687                         status_header ('404');
 688                 }
 689
 690                 wp_die();
 691         }
 692
 693         /**
 694          * Upload file to blog and add attachment to post.
 695          *
 696          * @since 2.2.0
 697          *
 698          * @param int $postID Post ID.
 699          */
 700         function put_file($postID) {
 701
 702                 // first check if user can upload
 703                 if ( !current_user_can('upload_files') )
 704                         $this->auth_required(__('You do not have permission to upload files.'));
 705
 706                 // check for not found
 707                 global $entry;
 708                 $this->set_current_entry($postID);
 709
 710                 // then whether user can edit the specific post
 711                 if ( !current_user_can('edit_post', $postID) )
 712                         $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
 713
 714                 $upload_dir = wp_upload_dir( );
 715                 $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
 716                 $filetype = wp_check_filetype($location);
 717
 718                 $location = "{$upload_dir['basedir']}/{$location}";
 719
 720                 if (!isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']))
 721                         $this->internal_error(__('Error occurred while accessing post metadata for file location.'));
 722
 723                 $fp = fopen("php://input", "rb");
 724                 $localfp = fopen($location, "w+");
 725                 while ( !feof($fp) ) {
 726                         fwrite($localfp,fread($fp, 4096));
 727                 }
 728                 fclose($fp);
 729                 fclose($localfp);
 730
 731                 $ID = $entry['ID'];
 732                 $pubtimes = $this->get_publish_time($entry->published);
 733                 $post_date = $pubtimes[0];
 734                 $post_date_gmt = $pubtimes[1];
 735                 $pubtimes = $this->get_publish_time($parsed->updated);
 736                 $post_modified = $pubtimes[0];
 737                 $post_modified_gmt = $pubtimes[1];
 738
 739                 $post_data = compact('ID', 'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt');
 740                 $result = wp_update_post($post_data);
 741
 742                 if ( !$result )
 743                         $this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
 744
 745                 wp_update_attachment_metadata( $postID, wp_generate_attachment_metadata( $postID, $location ) );
 746
 747                 $this->ok();
 748         }
 749
 750         /**
 751          * Retrieve entries URL.
 752          *
 753          * @since 2.2.0
 754          *
 755          * @param int $page Page ID.
 756          * @return string
 757          */
 758         function get_entries_url($page = null) {
 759                 if ( isset($GLOBALS['post_type']) && ( $GLOBALS['post_type'] == 'attachment' ) )
 760                         $path = $this->MEDIA_PATH;
 761                 else
 762                         $path = $this->ENTRIES_PATH;
 763                 $url = $this->app_base . $path;
 764                 if ( isset($page) && is_int($page) )
 765                         $url .= "/$page";
 766                 return $url;
 767         }
 768
 769         /**
 770          * Display entries URL.
 771          *
 772          * @since 2.2.0
 773          *
 774          * @param int $page Page ID.
 775          */
 776         function the_entries_url($page = null) {
 777                 echo $this->get_entries_url($page);
 778         }
 779
 780         /**
 781          * Retrieve categories URL.
 782          *
 783          * @since 2.2.0
 784          *
 785          * @param mixed $deprecated Not used.
 786          * @return string
 787          */
 788         function get_categories_url($deprecated = '') {
 789                 if ( !empty( $deprecated ) )
 790                         _deprecated_argument( __FUNCTION__, '2.5' );
 791                 return $this->app_base . $this->CATEGORIES_PATH;
 792         }
 793
 794         /**
 795          * Display category URL.
 796          *
 797          * @since 2.2.0
 798          */
 799         function the_categories_url() {
 800                 echo $this->get_categories_url();
 801         }
 802
 803         /**
 804          * Retrieve attachment URL.
 805          *
 806          * @since 2.2.0
 807          *
 808          * @param int $page Page ID.
 809          * @return string
 810          */
 811         function get_attachments_url($page = null) {
 812                 $url = $this->app_base . $this->MEDIA_PATH;
 813                 if (isset($page) && is_int($page)) {
 814                         $url .= "/$page";
 815                 }
 816                 return $url;
 817         }
 818
 819         /**
 820          * Display attachment URL.
 821          *
 822          * @since 2.2.0
 823          *
 824          * @param int $page Page ID.
 825          */
 826         function the_attachments_url($page = null) {
 827                 echo $this->get_attachments_url($page);
 828         }
 829
 830         /**
 831          * Retrieve service URL.
 832          *
 833          * @since 2.3.0
 834          *
 835          * @return string
 836          */
 837         function get_service_url() {
 838                 return $this->app_base . $this->SERVICE_PATH;
 839         }
 840
 841         /**
 842          * Retrieve entry URL.
 843          *
 844          * @since 2.7.0
 845          *
 846          * @param int $postID Post ID.
 847          * @return string
 848          */
 849         function get_entry_url($postID = null) {
 850                 if (!isset($postID)) {
 851                         global $post;
 852                         $postID = (int) $post->ID;
 853                 }
 854
 855                 $url = $this->app_base . $this->ENTRY_PATH . "/$postID";
 856
 857                 return $url;
 858         }
 859
 860         /**
 861          * Display entry URL.
 862          *
 863          * @since 2.7.0
 864          *
 865          * @param int $postID Post ID.
 866          */
 867         function the_entry_url($postID = null) {
 868                 echo $this->get_entry_url($postID);
 869         }
 870
 871         /**
 872          * Retrieve media URL.
 873          *
 874          * @since 2.2.0
 875          *
 876          * @param int $postID Post ID.
 877          * @return string
 878          */
 879         function get_media_url($postID = null) {
 880                 if (!isset($postID)) {
 881                         global $post;
 882                         $postID = (int) $post->ID;
 883                 }
 884
 885                 $url = $this->app_base . $this->MEDIA_SINGLE_PATH ."/file/$postID";
 886
 887                 return $url;
 888         }
 889
 890         /**
 891          * Display the media URL.
 892          *
 893          * @since 2.2.0
 894          *
 895          * @param int $postID Post ID.
 896          */
 897         function the_media_url($postID = null) {
 898                 echo $this->get_media_url($postID);
 899         }
 900
 901         /**
 902          * Set the current entry to post ID.
 903          *
 904          * @since 2.2.0
 905          *
 906          * @param int $postID Post ID.
 907          */
 908         function set_current_entry($postID) {
 909                 global $entry;
 910
 911                 if (!isset($postID)) {
 912                         // $this->bad_request();
 913                         $this->not_found();
 914                 }
 915
 916                 $entry = wp_get_single_post($postID,ARRAY_A);
 917
 918                 if (!isset($entry) || !isset($entry['ID']))
 919                         $this->not_found();
 920
 921                 return;
 922         }
 923
 924         /**
 925          * Display posts XML.
 926          *
 927          * @since 2.2.0
 928          *
 929          * @param int $page Optional. Page ID.
 930          * @param string $post_type Optional, default is 'post'. Post Type.
 931          */
 932         function get_posts($page = 1, $post_type = 'post') {
 933                 $feed = $this->get_feed($page, $post_type);
 934                 $this->output($feed);
 935         }
 936
 937         /**
 938          * Display attachment XML.
 939          *
 940          * @since 2.2.0
 941          *
 942          * @param int $page Page ID.
 943          * @param string $post_type Optional, default is 'attachment'. Post type.
 944          */
 945         function get_attachments($page = 1, $post_type = 'attachment') {
 946                 $GLOBALS['post_type'] = $post_type;
 947                 $feed = $this->get_feed($page, $post_type);
 948                 $this->output($feed);
 949         }
 950
 951         /**
 952          * Retrieve feed XML.
 953          *
 954          * @since 2.2.0
 955          *
 956          * @param int $page Page ID.
 957          * @param string $post_type Optional, default is post. Post type.
 958          * @return string
 959          */
 960         function get_feed($page = 1, $post_type = 'post') {
 961                 global $post, $wp, $wp_query, $posts, $wpdb, $blog_id;
 962                 ob_start();
 963
 964                 $this->ENTRY_PATH = $post_type;
 965
 966                 if (!isset($page)) {
 967                         $page = 1;
 968                 }
 969                 $page = (int) $page;
 970
 971                 $count = get_option('posts_per_rss');
 972
 973                 wp('posts_per_page=' . $count . '&offset=' . ($count * ($page-1)) . '&orderby=modified&post_status=any');
 974
 975                 $post = $GLOBALS['post'];
 976                 $posts = $GLOBALS['posts'];
 977                 $wp = $GLOBALS['wp'];
 978                 $wp_query = $GLOBALS['wp_query'];
 979                 $wpdb = $GLOBALS['wpdb'];
 980                 $blog_id = (int) $GLOBALS['blog_id'];
 981
 982                 $last_page = $wp_query->max_num_pages;
 983                 $next_page = (($page + 1) > $last_page) ? null : $page + 1;
 984                 $prev_page = ($page - 1) < 1 ? null : $page - 1;
 985                 $last_page = ((int)$last_page == 1 || (int)$last_page == 0) ? null : (int) $last_page;
 986                 $self_page = $page > 1 ? $page : null;
 987 ?><feed xmlns="<?php echo $this->ATOM_NS ?>" xmlns:app="<?php echo $this->ATOMPUB_NS ?>" xml:lang="<?php bloginfo_rss( 'language' ); ?>" <?php do_action('app_ns'); ?> >
 988 <id><?php $this->the_entries_url() ?></id>
 989 <updated><?php echo mysql2date('Y-m-d\TH:i:s\Z', get_lastpostmodified('GMT'), false); ?></updated>
 990 <title type="text"><?php bloginfo_rss('name') ?></title>
 991 <subtitle type="text"><?php bloginfo_rss("description") ?></subtitle>
 992 <link rel="first" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url() ?>" />
 993 <?php if (isset($prev_page)): ?>
 994 <link rel="previous" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($prev_page) ?>" />
 995 <?php endif; ?>
 996 <?php if (isset($next_page)): ?>
 997 <link rel="next" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($next_page) ?>" />
 998 <?php endif; ?>
 999 <link rel="last" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($last_page) ?>" />
1000 <link rel="self" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($self_page) ?>" />
1001 <rights type="text">Copyright <?php echo date('Y'); ?></rights>
1002 <?php do_action('app_head'); ?>
1003 <?php if ( have_posts() ) {
1004                         while ( have_posts() ) {
1005                                 the_post();
1006                                 $this->echo_entry();
1007                         }
1008                 }
1009 ?></feed>
1010 <?php
1011                 $feed = ob_get_contents();
1012                 ob_end_clean();
1013                 return $feed;
1014         }
1015
1016         /**
1017          * Display entry XML.
1018          *
1019          * @since 2.2.0
1020          *
1021          * @param int $postID Post ID.
1022          * @param string $post_type Optional, default is post. Post type.
1023          * @return string.
1024          */
1025         function get_entry($postID, $post_type = 'post') {
1026                 ob_start();
1027                 switch($post_type) {
1028                         case 'post':
1029                                 $varname = 'p';
1030                                 break;
1031                         case 'attachment':
1032                                 $this->ENTRY_PATH = 'attachment';
1033                                 $varname = 'attachment_id';
1034                                 break;
1035                 }
1036                 query_posts($varname . '=' . $postID);
1037                 if ( have_posts() ) {
1038                         while ( have_posts() ) {
1039                                 the_post();
1040                                 $this->echo_entry();
1041                                 $entry = ob_get_contents();
1042                                 break;
1043                         }
1044                 }
1045                 ob_end_clean();
1046
1047                 return $entry;
1048         }
1049
1050         /**
1051          * Display post content XML.
1052          *
1053          * @since 2.3.0
1054          */
1055         function echo_entry() { ?>
1056 <entry xmlns="<?php echo $this->ATOM_NS ?>"
1057        xmlns:app="<?php echo $this->ATOMPUB_NS ?>" xml:lang="<?php bloginfo_rss( 'language' ); ?>">
1058         <id><?php the_guid( $GLOBALS['post']->ID ); ?></id>
1059 <?php list($content_type, $content) = prep_atom_text_construct(get_the_title()); ?>
1060         <title type="<?php echo $content_type ?>"><?php echo $content ?></title>
1061         <updated><?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?></updated>
1062         <published><?php echo get_post_time('Y-m-d\TH:i:s\Z', true); ?></published>
1063         <app:edited><?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?></app:edited>
1064         <app:control>
1065                 <app:draft><?php echo ($GLOBALS['post']->post_status == 'draft' ? 'yes' : 'no') ?></app:draft>
1066         </app:control>
1067         <author>
1068                 <name><?php the_author()?></name>
1069 <?php if ( get_the_author_meta('url') && get_the_author_meta('url') != 'http://' ) { ?>
1070                 <uri><?php the_author_meta('url') ?></uri>
1071 <?php } ?>
1072         </author>
1073 <?php if ($GLOBALS['post']->post_type == 'attachment') { ?>
1074         <link rel="edit-media" href="<?php $this->the_media_url() ?>" />
1075         <content type="<?php echo $GLOBALS['post']->post_mime_type ?>" src="<?php the_guid() ; ?>"/>
1076 <?php } else { ?>
1077         <link href="<?php the_permalink_rss() ?>" />
1078 <?php if ( strlen( $GLOBALS['post']->post_content ) ) :
1079 list($content_type, $content) = prep_atom_text_construct(get_the_content()); ?>
1080         <content type="<?php echo $content_type ?>"><?php echo $content ?></content>
1081 <?php endif; ?>
1082 <?php } ?>
1083         <link rel="edit" href="<?php $this->the_entry_url() ?>" />
1084         <?php the_category_rss( 'atom' ); ?>
1085 <?php list($content_type, $content) = prep_atom_text_construct(get_the_excerpt()); ?>
1086         <summary type="<?php echo $content_type ?>"><?php echo $content ?></summary>
1087         <?php do_action('app_entry'); ?>
1088 </entry>
1089 <?php }
1090
1091         /**
1092          * Set 'OK' (200) status header.
1093          *
1094          * @since 2.2.0
1095          */
1096         function ok() {
1097                 header('Content-Type: text/plain');
1098                 status_header('200');
1099                 wp_die();
1100         }
1101
1102         /**
1103          * Set 'No Content' (204) status header.
1104          *
1105          * @since 2.2.0
1106          */
1107         function no_content() {
1108                 header('Content-Type: text/plain');
1109                 status_header('204');
1110                 echo "Moved to Trash.";
1111                 wp_die();
1112         }
1113
1114         /**
1115          * Display 'Internal Server Error' (500) status header.
1116          *
1117          * @since 2.2.0
1118          *
1119          * @param string $msg Optional. Status string.
1120          */
1121         function internal_error($msg = 'Internal Server Error') {
1122                 header('Content-Type: text/plain');
1123                 status_header('500');
1124                 echo $msg;
1125                 wp_die();
1126         }
1127
1128         /**
1129          * Set 'Bad Request' (400) status header.
1130          *
1131          * @since 2.2.0
1132          */
1133         function bad_request() {
1134                 header('Content-Type: text/plain');
1135                 status_header('400');
1136                 wp_die();
1137         }
1138
1139         /**
1140          * Set 'Length Required' (411) status header.
1141          *
1142          * @since 2.2.0
1143          */
1144         function length_required() {
1145                 header("HTTP/1.1 411 Length Required");
1146                 header('Content-Type: text/plain');
1147                 status_header('411');
1148                 wp_die();
1149         }
1150
1151         /**
1152          * Set 'Unsupported Media Type' (415) status header.
1153          *
1154          * @since 2.2.0
1155          */
1156         function invalid_media() {
1157                 header("HTTP/1.1 415 Unsupported Media Type");
1158                 header('Content-Type: text/plain');
1159                 wp_die();
1160         }
1161
1162         /**
1163          * Set 'Forbidden' (403) status header.
1164          *
1165          * @since 2.6.0
1166          */
1167         function forbidden($reason='') {
1168                 header('Content-Type: text/plain');
1169                 status_header('403');
1170                 echo $reason;
1171                 wp_die();
1172         }
1173
1174         /**
1175          * Set 'Not Found' (404) status header.
1176          *
1177          * @since 2.2.0
1178          */
1179         function not_found() {
1180                 header('Content-Type: text/plain');
1181                 status_header('404');
1182                 wp_die();
1183         }
1184
1185         /**
1186          * Set 'Not Allowed' (405) status header.
1187          *
1188          * @since 2.2.0
1189          */
1190         function not_allowed($allow) {
1191                 header('Allow: ' . join(',', $allow));
1192                 status_header('405');
1193                 wp_die();
1194         }
1195
1196         /**
1197          * Display Redirect (302) content and set status headers.
1198          *
1199          * @since 2.3.0
1200          */
1201         function redirect($url) {
1202                 $escaped_url = esc_attr($url);
1203                 $content = <<<EOD
1204 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
1205 <html>
1206   <head>
1207     <title>302 Found</title>
1208   </head>
1209 <body>
1210   <h1>Found</h1>
1211   <p>The document has moved <a href="$escaped_url">here</a>.</p>
1212   </body>
1213 </html>
1214
1215 EOD;
1216                 header('HTTP/1.1 302 Moved');
1217                 header('Content-Type: text/html');
1218                 header('Location: ' . $url);
1219                 echo $content;
1220                 wp_die();
1221
1222         }
1223
1224         /**
1225          * Set 'Client Error' (400) status header.
1226          *
1227          * @since 2.2.0
1228          */
1229         function client_error($msg = 'Client Error') {
1230                 header('Content-Type: text/plain');
1231                 status_header('400');
1232                 wp_die();
1233         }
1234
1235         /**
1236          * Set created status headers (201).
1237          *
1238          * Sets the 'content-type', 'content-location', and 'location'.
1239          *
1240          * @since 2.2.0
1241          */
1242         function created($post_ID, $content, $post_type = 'post') {
1243                 $edit = $this->get_entry_url($post_ID);
1244                 switch($post_type) {
1245                         case 'post':
1246                                 $ctloc = $this->get_entry_url($post_ID);
1247                                 break;
1248                         case 'attachment':
1249                                 $edit = $this->app_base . "attachments/$post_ID";
1250                                 break;
1251                 }
1252                 header("Content-Type: $this->ATOM_CONTENT_TYPE");
1253                 if (isset($ctloc))
1254                         header('Content-Location: ' . $ctloc);
1255                 header('Location: ' . $edit);
1256                 status_header('201');
1257                 echo $content;
1258                 wp_die();
1259         }
1260
1261         /**
1262          * Set 'Auth Required' (401) headers.
1263          *
1264          * @since 2.2.0
1265          *
1266          * @param string $msg Status header content and HTML content.
1267          */
1268         function auth_required($msg) {
1269                 nocache_headers();
1270                 header('WWW-Authenticate: Basic realm="WordPress Atom Protocol"');
1271                 header("HTTP/1.1 401 $msg");
1272                 header('Status: 401 ' . $msg);
1273                 header('Content-Type: text/html');
1274                 $content = <<<EOD
1275 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
1276 <html>
1277   <head>
1278     <title>401 Unauthorized</title>
1279   </head>
1280 <body>
1281     <h1>401 Unauthorized</h1>
1282     <p>$msg</p>
1283   </body>
1284 </html>
1285
1286 EOD;
1287                 echo $content;
1288                 wp_die();
1289         }
1290
1291         /**
1292          * Display XML and set headers with content type.
1293          *
1294          * @since 2.2.0
1295          *
1296          * @param string $xml Display feed content.
1297          * @param string $ctype Optional, default is 'atom+xml'. Feed content type.
1298          */
1299         function output($xml, $ctype = 'application/atom+xml') {
1300                 status_header('200');
1301                 $xml = '<?xml version="1.0" encoding="' . strtolower(get_option('blog_charset')) . '"?>'."\n".$xml;
1302                 header('Connection: close');
1303                 header('Content-Length: '. strlen($xml));
1304                 header('Content-Type: ' . $ctype);
1305                 header('Content-Disposition: attachment; filename=atom.xml');
1306                 header('Date: '. date('r'));
1307                 if ($this->do_output)
1308                         echo $xml;
1309                 wp_die();
1310         }
1311
1312         /**
1313          * Sanitize content for database usage.
1314          *
1315          * @since 2.2.0
1316          *
1317          * @param array $array Sanitize array and multi-dimension array.
1318          */
1319         function escape(&$array) {
1320                 global $wpdb;
1321
1322                 foreach ($array as $k => $v) {
1323                                 if (is_array($v)) {
1324                                                 $this->escape($array[$k]);
1325                                 } else if (is_object($v)) {
1326                                                 //skip
1327                                 } else {
1328                                                 $array[$k] = $wpdb->escape($v);
1329                                 }
1330                 }
1331         }
1332
1333         /**
1334          * Access credential through various methods and perform login.
1335          *
1336          * @since 2.2.0
1337          *
1338          * @return bool
1339          */
1340         function authenticate() {
1341
1342                 // if using mod_rewrite/ENV hack
1343                 // http://www.besthostratings.com/articles/http-auth-php-cgi.html
1344                 if (isset($_SERVER['HTTP_AUTHORIZATION'])) {
1345                         list($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']) =
1346                                 explode(':', base64_decode(substr($_SERVER['HTTP_AUTHORIZATION'], 6)));
1347                 } else if (isset($_SERVER['REDIRECT_REMOTE_USER'])) {
1348                         // Workaround for setups that do not forward HTTP_AUTHORIZATION
1349                         // See http://trac.wordpress.org/ticket/7361
1350                         list($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']) =
1351                                 explode(':', base64_decode(substr($_SERVER['REDIRECT_REMOTE_USER'], 6)));
1352                 }
1353
1354                 // If Basic Auth is working...
1355                 if (isset($_SERVER['PHP_AUTH_USER']) && isset($_SERVER['PHP_AUTH_PW'])) {
1356
1357                         $user = wp_authenticate($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']);
1358                         if ( $user && !is_wp_error($user) ) {
1359                                 wp_set_current_user($user->ID);
1360                                 return true;
1361                         }
1362                 }
1363
1364                 return false;
1365         }
1366
1367         /**
1368          * Retrieve accepted content types.
1369          *
1370          * @since 2.2.0
1371          *
1372          * @param array $types Optional. Content Types.
1373          * @return string
1374          */
1375         function get_accepted_content_type($types = null) {
1376
1377                 if (!isset($types)) {
1378                         $types = $this->media_content_types;
1379                 }
1380
1381                 if (!isset($_SERVER['CONTENT_LENGTH']) || !isset($_SERVER['CONTENT_TYPE'])) {
1382                         $this->length_required();
1383                 }
1384
1385                 $type = $_SERVER['CONTENT_TYPE'];
1386                 list($type,$subtype) = explode('/',$type);
1387                 list($subtype) = explode(";",$subtype); // strip MIME parameters
1388
1389                 foreach($types as $t) {
1390                         list($acceptedType,$acceptedSubtype) = explode('/',$t);
1391                         if ($acceptedType == '*' || $acceptedType == $type) {
1392                                 if ($acceptedSubtype == '*' || $acceptedSubtype == $subtype)
1393                                         return $type . "/" . $subtype;
1394                         }
1395                 }
1396
1397                 $this->invalid_media();
1398         }
1399
1400         /**
1401          * Process conditionals for posts.
1402          *
1403          * @since 2.2.0
1404          */
1405         function process_conditionals() {
1406
1407                 if (empty($this->params)) return;
1408                 if ($_SERVER['REQUEST_METHOD'] == 'DELETE') return;
1409
1410                 switch($this->params[0]) {
1411                         case $this->ENTRY_PATH:
1412                                 global $post;
1413                                 $post = wp_get_single_post($this->params[1]);
1414                                 $wp_last_modified = get_post_modified_time('D, d M Y H:i:s', true);
1415                                 $post = null;
1416                                 break;
1417                         case $this->ENTRIES_PATH:
1418                                 $wp_last_modified = mysql2date('D, d M Y H:i:s', get_lastpostmodified('GMT'), 0).' GMT';
1419                                 break;
1420                         default:
1421                                 return;
1422                 }
1423                 $wp_etag = md5($wp_last_modified);
1424                 @header("Last-Modified: $wp_last_modified");
1425                 @header("ETag: $wp_etag");
1426
1427                 // Support for Conditional GET
1428                 if (isset($_SERVER['HTTP_IF_NONE_MATCH']))
1429                         $client_etag = stripslashes($_SERVER['HTTP_IF_NONE_MATCH']);
1430                 else
1431                         $client_etag = false;
1432
1433                 $client_last_modified = trim( $_SERVER['HTTP_IF_MODIFIED_SINCE']);
1434                 // If string is empty, return 0. If not, attempt to parse into a timestamp
1435                 $client_modified_timestamp = $client_last_modified ? strtotime($client_last_modified) : 0;
1436
1437                 // Make a timestamp for our most recent modification...
1438                 $wp_modified_timestamp = strtotime($wp_last_modified);
1439
1440                 if ( ($client_last_modified && $client_etag) ?
1441                 (($client_modified_timestamp >= $wp_modified_timestamp) && ($client_etag == $wp_etag)) :
1442                 (($client_modified_timestamp >= $wp_modified_timestamp) || ($client_etag == $wp_etag)) ) {
1443                         status_header( 304 );
1444                         wp_die();
1445                 }
1446         }
1447
1448         /**
1449          * Convert RFC3339 time string to timestamp.
1450          *
1451          * @since 2.3.0
1452          *
1453          * @param string $str String to time.
1454          * @return bool|int false if format is incorrect.
1455          */
1456         function rfc3339_str2time($str) {
1457
1458                 $match = false;
1459                 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, $match))
1460                         return false;
1461
1462                 if ($match[3] == 'Z')
1463                         $match[3] = '+0000';
1464
1465                 return strtotime($match[1] . " " . $match[2] . " " . $match[3]);
1466         }
1467
1468         /**
1469          * Retrieve published time to display in XML.
1470          *
1471          * @since 2.3.0
1472          *
1473          * @param string $published Time string.
1474          * @return string
1475          */
1476         function get_publish_time($published) {
1477
1478                 $pubtime = $this->rfc3339_str2time($published);
1479
1480                 if (!$pubtime) {
1481                         return array(current_time('mysql'),current_time('mysql',1));
1482                 } else {
1483                         return array(date("Y-m-d H:i:s", $pubtime), gmdate("Y-m-d H:i:s", $pubtime));
1484                 }
1485         }
1486
1487 }