wp-app.php

   1 <?php
   2 /**
   3  * Atom Publishing Protocol support for WordPress
   4  *
   5  * @version 1.0.5-dc
   6  */
   7
   8 /**
   9  * WordPress is handling an Atom Publishing Protocol request.
  10  *
  11  * @var bool
  12  */
  13 define('APP_REQUEST', true);
  14
  15 /** Set up WordPress environment */
  16 require_once('./wp-load.php');
  17
  18 /** Atom Publishing Protocol Class */
  19 require_once(ABSPATH . WPINC . '/atomlib.php');
  20
  21 /** Admin Image API for metadata updating */
  22 require_once(ABSPATH . '/wp-admin/includes/image.php');
  23
  24 $_SERVER['PATH_INFO'] = preg_replace( '/.*\/wp-app\.php/', '', $_SERVER['REQUEST_URI'] );
  25
  26 /**
  27  * Whether to enable Atom Publishing Protocol Logging.
  28  *
  29  * @name app_logging
  30  * @var int|bool
  31  */
  32 $app_logging = 0;
  33
  34 /**
  35  * Whether to always authenticate user. Permanently set to true.
  36  *
  37  * @name always_authenticate
  38  * @var int|bool
  39  * @todo Should be an option somewhere
  40  */
  41 $always_authenticate = 1;
  42
  43 /**
  44  * Writes logging info to a file.
  45  *
  46  * @since 2.2.0
  47  * @uses $app_logging
  48  * @package WordPress
  49  * @subpackage Logging
  50  *
  51  * @param string $label Type of logging
  52  * @param string $msg Information describing logging reason.
  53  */
  54 function log_app($label,$msg) {
  55         global $app_logging;
  56         if ($app_logging) {
  57                 $fp = fopen( 'wp-app.log', 'a+');
  58                 $date = gmdate( 'Y-m-d H:i:s' );
  59                 fwrite($fp, "\n\n$date - $label\n$msg\n");
  60                 fclose($fp);
  61         }
  62 }
  63
  64 /**
  65  * Filter to add more post statuses.
  66  *
  67  * @since 2.2.0
  68  *
  69  * @param string $where SQL statement to filter.
  70  * @return string Filtered SQL statement with added post_status for where clause.
  71  */
  72 function wa_posts_where_include_drafts_filter($where) {
  73         $where = str_replace("post_status = 'publish'","post_status = 'publish' OR post_status = 'future' OR post_status = 'draft' OR post_status = 'inherit'", $where);
  74         return $where;
  75
  76 }
  77 add_filter('posts_where', 'wa_posts_where_include_drafts_filter');
  78
  79 /**
  80  * WordPress AtomPub API implementation.
  81  *
  82  * @package WordPress
  83  * @subpackage Publishing
  84  * @since 2.2.0
  85  */
  86 class AtomServer {
  87
  88         /**
  89          * ATOM content type.
  90          *
  91          * @since 2.2.0
  92          * @var string
  93          */
  94         var $ATOM_CONTENT_TYPE = 'application/atom+xml';
  95
  96         /**
  97          * Categories ATOM content type.
  98          *
  99          * @since 2.2.0
 100          * @var string
 101          */
 102         var $CATEGORIES_CONTENT_TYPE = 'application/atomcat+xml';
 103
 104         /**
 105          * Service ATOM content type.
 106          *
 107          * @since 2.3.0
 108          * @var string
 109          */
 110         var $SERVICE_CONTENT_TYPE = 'application/atomsvc+xml';
 111
 112         /**
 113          * ATOM XML namespace.
 114          *
 115          * @since 2.3.0
 116          * @var string
 117          */
 118         var $ATOM_NS = 'http://www.w3.org/2005/Atom';
 119
 120         /**
 121          * ATOMPUB XML namespace.
 122          *
 123          * @since 2.3.0
 124          * @var string
 125          */
 126         var $ATOMPUB_NS = 'http://www.w3.org/2007/app';
 127
 128         /**
 129          * Entries path.
 130          *
 131          * @since 2.2.0
 132          * @var string
 133          */
 134         var $ENTRIES_PATH = "posts";
 135
 136         /**
 137          * Categories path.
 138          *
 139          * @since 2.2.0
 140          * @var string
 141          */
 142         var $CATEGORIES_PATH = "categories";
 143
 144         /**
 145          * Media path.
 146          *
 147          * @since 2.2.0
 148          * @var string
 149          */
 150         var $MEDIA_PATH = "attachments";
 151
 152         /**
 153          * Entry path.
 154          *
 155          * @since 2.2.0
 156          * @var string
 157          */
 158         var $ENTRY_PATH = "post";
 159
 160         /**
 161          * Service path.
 162          *
 163          * @since 2.2.0
 164          * @var string
 165          */
 166         var $SERVICE_PATH = "service";
 167
 168         /**
 169          * Media single path.
 170          *
 171          * @since 2.2.0
 172          * @var string
 173          */
 174         var $MEDIA_SINGLE_PATH = "attachment";
 175
 176         /**
 177          * ATOMPUB parameters.
 178          *
 179          * @since 2.2.0
 180          * @var array
 181          */
 182         var $params = array();
 183
 184         /**
 185          * Supported ATOMPUB media types.
 186          *
 187          * @since 2.3.0
 188          * @var array
 189          */
 190         var $media_content_types = array('image/*','audio/*','video/*');
 191
 192         /**
 193          * ATOMPUB content type(s).
 194          *
 195          * @since 2.2.0
 196          * @var array
 197          */
 198         var $atom_content_types = array('application/atom+xml');
 199
 200         /**
 201          * ATOMPUB methods.
 202          *
 203          * @since 2.2.0
 204          * @var unknown_type
 205          */
 206         var $selectors = array();
 207
 208         /**
 209          * Whether to do output.
 210          *
 211          * Support for head.
 212          *
 213          * @since 2.2.0
 214          * @var bool
 215          */
 216         var $do_output = true;
 217
 218         /**
 219          * Constructor - Sets up object properties.
 220          *
 221          * @since 2.2.0
 222          * @return AtomServer
 223          */
 224         function __construct() {
 225
 226                 $var_by_ref = explode( '/', $_SERVER['SCRIPT_NAME'] );
 227                 $this->script_name = array_pop( $var_by_ref );
 228                 $this->app_base = site_url( $this->script_name . '/' );
 229
 230                 $this->selectors = array(
 231                         '@/service$@' =>
 232                                 array('GET' => 'get_service'),
 233                         '@/categories$@' =>
 234                                 array('GET' => 'get_categories_xml'),
 235                         '@/post/(\d+)$@' =>
 236                                 array('GET' => 'get_post',
 237                                                 'PUT' => 'put_post',
 238                                                 'DELETE' => 'delete_post'),
 239                         '@/posts/?(\d+)?$@' =>
 240                                 array('GET' => 'get_posts',
 241                                                 'POST' => 'create_post'),
 242                         '@/attachments/?(\d+)?$@' =>
 243                                 array('GET' => 'get_attachment',
 244                                                 'POST' => 'create_attachment'),
 245                         '@/attachment/file/(\d+)$@' =>
 246                                 array('GET' => 'get_file',
 247                                                 'PUT' => 'put_file',
 248                                                 'DELETE' => 'delete_file'),
 249                         '@/attachment/(\d+)$@' =>
 250                                 array('GET' => 'get_attachment',
 251                                                 'PUT' => 'put_attachment',
 252                                                 'DELETE' => 'delete_attachment'),
 253                 );
 254         }
 255
 256         /**
 257          * Handle ATOMPUB request.
 258          *
 259          * @since 2.2.0
 260          */
 261         function handle_request() {
 262                 global $always_authenticate;
 263
 264                 if ( !empty( $_SERVER['ORIG_PATH_INFO'] ) )
 265                         $path = $_SERVER['ORIG_PATH_INFO'];
 266                 else
 267                         $path = $_SERVER['PATH_INFO'];
 268
 269                 $method = $_SERVER['REQUEST_METHOD'];
 270
 271                 log_app('REQUEST',"$method $path\n================");
 272
 273                 $this->process_conditionals();
 274                 //$this->process_conditionals();
 275
 276                 // exception case for HEAD (treat exactly as GET, but don't output)
 277                 if ($method == 'HEAD') {
 278                         $this->do_output = false;
 279                         $method = 'GET';
 280                 }
 281
 282                 // redirect to /service in case no path is found.
 283                 if (strlen($path) == 0 || $path == '/')
 284                         $this->redirect($this->get_service_url());
 285
 286                 // check to see if AtomPub is enabled
 287                 if ( !get_option( 'enable_app' ) )
 288                         $this->forbidden( sprintf( __( 'AtomPub services are disabled on this site.  An admin user can enable them at %s' ), admin_url('options-writing.php') ) );
 289
 290                 // dispatch
 291                 foreach ( $this->selectors as $regex => $funcs ) {
 292                         if ( preg_match($regex, $path, $matches) ) {
 293                                 if ( isset($funcs[$method]) ) {
 294
 295                                         // authenticate regardless of the operation and set the current
 296                                         // user. each handler will decide if auth is required or not.
 297                                         if ( !$this->authenticate() ) {
 298                                                 if ( $always_authenticate )
 299                                                         $this->auth_required('Credentials required.');
 300                                         }
 301
 302                                         array_shift($matches);
 303                                         call_user_func_array(array(&$this,$funcs[$method]), $matches);
 304                                         exit();
 305                                 } else {
 306                                         // only allow what we have handlers for...
 307                                         $this->not_allowed(array_keys($funcs));
 308                                 }
 309                         }
 310                 }
 311
 312                 // oops, nothing found
 313                 $this->not_found();
 314         }
 315
 316         /**
 317          * Retrieve XML for ATOMPUB service.
 318          *
 319          * @since 2.2.0
 320          */
 321         function get_service() {
 322                 log_app('function','get_service()');
 323
 324                 if ( !current_user_can( 'edit_posts' ) )
 325                         $this->auth_required( __( 'Sorry, you do not have the right to access this site.' ) );
 326
 327                 $entries_url = esc_attr($this->get_entries_url());
 328                 $categories_url = esc_attr($this->get_categories_url());
 329                 $media_url = esc_attr($this->get_attachments_url());
 330                 $accepted_media_types = '';
 331                 foreach ($this->media_content_types as $med) {
 332                         $accepted_media_types = $accepted_media_types . "<accept>" . $med . "</accept>";
 333                 }
 334                 $atom_prefix="atom";
 335                 $atom_blogname = get_bloginfo('name');
 336                 $service_doc = <<<EOD
 337 <service xmlns="$this->ATOMPUB_NS" xmlns:$atom_prefix="$this->ATOM_NS">
 338   <workspace>
 339     <$atom_prefix:title>$atom_blogname Workspace</$atom_prefix:title>
 340     <collection href="$entries_url">
 341       <$atom_prefix:title>$atom_blogname Posts</$atom_prefix:title>
 342       <accept>$this->ATOM_CONTENT_TYPE;type=entry</accept>
 343       <categories href="$categories_url" />
 344     </collection>
 345     <collection href="$media_url">
 346       <$atom_prefix:title>$atom_blogname Media</$atom_prefix:title>
 347       $accepted_media_types
 348     </collection>
 349   </workspace>
 350 </service>
 351
 352 EOD;
 353
 354                 $this->output($service_doc, $this->SERVICE_CONTENT_TYPE);
 355         }
 356
 357         /**
 358          * Retrieve categories list in XML format.
 359          *
 360          * @since 2.2.0
 361          */
 362         function get_categories_xml() {
 363                 log_app('function','get_categories_xml()');
 364
 365                 if ( !current_user_can( 'edit_posts' ) )
 366                         $this->auth_required( __( 'Sorry, you do not have the right to access this site.' ) );
 367
 368                 $home = esc_attr(get_bloginfo_rss('url'));
 369
 370                 $categories = "";
 371                 $cats = get_categories(array('hierarchical' => 0, 'hide_empty' => 0));
 372                 foreach ( (array) $cats as $cat ) {
 373                         $categories .= "    <category term=\"" . esc_attr($cat->name) .  "\" />\n";
 374                 }
 375                 $output = <<<EOD
 376 <app:categories xmlns:app="$this->ATOMPUB_NS"
 377         xmlns="$this->ATOM_NS"
 378         fixed="yes" scheme="$home">
 379         $categories
 380 </app:categories>
 381 EOD;
 382                 $this->output($output, $this->CATEGORIES_CONTENT_TYPE);
 383         }
 384
 385         /**
 386          * Create new post.
 387          *
 388          * @since 2.2.0
 389          */
 390         function create_post() {
 391                 global $user_ID;
 392                 $this->get_accepted_content_type($this->atom_content_types);
 393
 394                 $parser = new AtomParser();
 395                 if ( !$parser->parse() )
 396                         $this->client_error();
 397
 398                 $entry = array_pop($parser->feed->entries);
 399
 400                 log_app('Received entry:', print_r($entry,true));
 401
 402                 $catnames = array();
 403                 foreach ( $entry->categories as $cat ) {
 404                         array_push($catnames, $cat["term"]);
 405                 }
 406
 407                 $wp_cats = get_categories(array('hide_empty' => false));
 408
 409                 $post_category = array();
 410
 411                 foreach ( $wp_cats as $cat ) {
 412                         if ( in_array($cat->name, $catnames) )
 413                                 array_push($post_category, $cat->term_id);
 414                 }
 415
 416                 $publish = ! ( isset( $entry->draft ) && 'yes' == trim( $entry->draft ) );
 417
 418                 $cap = ($publish) ? 'publish_posts' : 'edit_posts';
 419
 420                 if ( !current_user_can($cap) )
 421                         $this->auth_required(__('Sorry, you do not have the right to edit/publish new posts.'));
 422
 423                 $blog_ID = get_current_blog_id();
 424                 $post_status = ($publish) ? 'publish' : 'draft';
 425                 $post_author = (int) $user_ID;
 426                 $post_title = $entry->title[1];
 427                 $post_content = $entry->content[1];
 428                 $post_excerpt = $entry->summary[1];
 429                 $pubtimes = $this->get_publish_time($entry->published);
 430                 $post_date = $pubtimes[0];
 431                 $post_date_gmt = $pubtimes[1];
 432
 433                 if ( isset( $_SERVER['HTTP_SLUG'] ) )
 434                         $post_name = $_SERVER['HTTP_SLUG'];
 435
 436                 $post_data = compact('blog_ID', 'post_author', 'post_date', 'post_date_gmt', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_name');
 437
 438                 $this->escape($post_data);
 439                 log_app('Inserting Post. Data:', print_r($post_data,true));
 440
 441                 $postID = wp_insert_post($post_data);
 442                 if ( is_wp_error( $postID ) )
 443                         $this->internal_error($postID->get_error_message());
 444
 445                 if ( !$postID )
 446                         $this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
 447
 448                 // getting warning here about unable to set headers
 449                 // because something in the cache is printing to the buffer
 450                 // could we clean up wp_set_post_categories or cache to not print
 451                 // this could affect our ability to send back the right headers
 452                 @wp_set_post_categories($postID, $post_category);
 453
 454                 do_action( 'atompub_create_post', $postID, $entry );
 455
 456                 $output = $this->get_entry($postID);
 457
 458                 log_app('function',"create_post($postID)");
 459                 $this->created($postID, $output);
 460         }
 461
 462         /**
 463          * Retrieve post.
 464          *
 465          * @since 2.2.0
 466          *
 467          * @param int $postID Post ID.
 468          */
 469         function get_post($postID) {
 470                 global $entry;
 471
 472                 if ( !current_user_can( 'edit_post', $postID ) )
 473                         $this->auth_required( __( 'Sorry, you do not have the right to access this post.' ) );
 474
 475                 $this->set_current_entry($postID);
 476                 $output = $this->get_entry($postID);
 477                 log_app('function',"get_post($postID)");
 478                 $this->output($output);
 479
 480         }
 481
 482         /**
 483          * Update post.
 484          *
 485          * @since 2.2.0
 486          *
 487          * @param int $postID Post ID.
 488          */
 489         function put_post($postID) {
 490                 // checked for valid content-types (atom+xml)
 491                 // quick check and exit
 492                 $this->get_accepted_content_type($this->atom_content_types);
 493
 494                 $parser = new AtomParser();
 495                 if ( !$parser->parse() )
 496                         $this->bad_request();
 497
 498                 $parsed = array_pop($parser->feed->entries);
 499
 500                 log_app('Received UPDATED entry:', print_r($parsed,true));
 501
 502                 // check for not found
 503                 global $entry;
 504                 $this->set_current_entry($postID);
 505
 506                 if ( !current_user_can('edit_post', $entry['ID']) )
 507                         $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
 508
 509                 $publish = ! ( isset($parsed->draft) && 'yes' == trim($parsed->draft) );
 510                 $post_status = ($publish) ? 'publish' : 'draft';
 511
 512                 extract($entry);
 513
 514                 $post_title = $parsed->title[1];
 515                 $post_content = $parsed->content[1];
 516                 $post_excerpt = $parsed->summary[1];
 517                 $pubtimes = $this->get_publish_time($entry->published);
 518                 $post_date = $pubtimes[0];
 519                 $post_date_gmt = $pubtimes[1];
 520                 $pubtimes = $this->get_publish_time($parsed->updated);
 521                 $post_modified = $pubtimes[0];
 522                 $post_modified_gmt = $pubtimes[1];
 523
 524                 $postdata = compact('ID', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt');
 525                 $this->escape($postdata);
 526
 527                 $result = wp_update_post($postdata);
 528
 529                 if ( !$result )
 530                         $this->internal_error(__('For some strange yet very annoying reason, this post could not be edited.'));
 531
 532                 do_action( 'atompub_put_post', $ID, $parsed );
 533
 534                 log_app('function',"put_post($postID)");
 535                 $this->ok();
 536         }
 537
 538         /**
 539          * Remove post.
 540          *
 541          * @since 2.2.0
 542          *
 543          * @param int $postID Post ID.
 544          */
 545         function delete_post($postID) {
 546
 547                 // check for not found
 548                 global $entry;
 549                 $this->set_current_entry($postID);
 550
 551                 if ( !current_user_can('edit_post', $postID) )
 552                         $this->auth_required(__('Sorry, you do not have the right to delete this post.'));
 553
 554                 if ( $entry['post_type'] == 'attachment' ) {
 555                         $this->delete_attachment($postID);
 556                 } else {
 557                         $result = wp_delete_post($postID);
 558
 559                         if ( !$result ) {
 560                                 $this->internal_error(__('For some strange yet very annoying reason, this post could not be deleted.'));
 561                         }
 562
 563                         log_app('function',"delete_post($postID)");
 564                         $this->ok();
 565                 }
 566
 567         }
 568
 569         /**
 570          * Retrieve attachment.
 571          *
 572          * @since 2.2.0
 573          *
 574          * @param int $postID Optional. Post ID.
 575          */
 576         function get_attachment($postID = null) {
 577                 if ( !current_user_can( 'upload_files' ) )
 578                         $this->auth_required( __( 'Sorry, you do not have permission to upload files.' ) );
 579
 580                 if ( !isset($postID) ) {
 581                         $this->get_attachments();
 582                 } else {
 583                         $this->set_current_entry($postID);
 584                         $output = $this->get_entry($postID, 'attachment');
 585                         log_app('function',"get_attachment($postID)");
 586                         $this->output($output);
 587                 }
 588         }
 589
 590         /**
 591          * Create new attachment.
 592          *
 593          * @since 2.2.0
 594          */
 595         function create_attachment() {
 596
 597                 $type = $this->get_accepted_content_type();
 598
 599                 if ( !current_user_can('upload_files') )
 600                         $this->auth_required(__('You do not have permission to upload files.'));
 601
 602                 $fp = fopen("php://input", "rb");
 603                 $bits = null;
 604                 while ( !feof($fp) ) {
 605                         $bits .= fread($fp, 4096);
 606                 }
 607                 fclose($fp);
 608
 609                 $slug = '';
 610                 if ( isset( $_SERVER['HTTP_SLUG'] ) )
 611                         $slug = $_SERVER['HTTP_SLUG'];
 612                 elseif ( isset( $_SERVER['HTTP_TITLE'] ) )
 613                         $slug = $_SERVER['HTTP_TITLE'];
 614                 elseif ( empty( $slug ) ) // just make a random name
 615                         $slug = substr( md5( uniqid( microtime() ) ), 0, 7);
 616                 $ext = preg_replace( '|.*/([a-z0-9]+)|', '$1', $_SERVER['CONTENT_TYPE'] );
 617                 $slug = sanitize_file_name( "$slug.$ext" );
 618                 $file = wp_upload_bits( $slug, NULL, $bits);
 619
 620                 log_app('wp_upload_bits returns:',print_r($file,true));
 621
 622                 $url = $file['url'];
 623                 $file = $file['file'];
 624
 625                 do_action('wp_create_file_in_uploads', $file); // replicate
 626
 627                 // Construct the attachment array
 628                 $attachment = array(
 629                         'post_title' => $slug,
 630                         'post_content' => $slug,
 631                         'post_status' => 'attachment',
 632                         'post_parent' => 0,
 633                         'post_mime_type' => $type,
 634                         'guid' => $url
 635                         );
 636
 637                 // Save the data
 638                 $postID = wp_insert_attachment($attachment, $file);
 639
 640                 if (!$postID)
 641                         $this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
 642
 643                 $output = $this->get_entry($postID, 'attachment');
 644
 645                 $this->created($postID, $output, 'attachment');
 646                 log_app('function',"create_attachment($postID)");
 647         }
 648
 649         /**
 650          * Update attachment.
 651          *
 652          * @since 2.2.0
 653          *
 654          * @param int $postID Post ID.
 655          */
 656         function put_attachment($postID) {
 657                 // checked for valid content-types (atom+xml)
 658                 // quick check and exit
 659                 $this->get_accepted_content_type($this->atom_content_types);
 660
 661                 $parser = new AtomParser();
 662                 if (!$parser->parse()) {
 663                         $this->bad_request();
 664                 }
 665
 666                 $parsed = array_pop($parser->feed->entries);
 667
 668                 // check for not found
 669                 global $entry;
 670                 $this->set_current_entry($postID);
 671
 672                 if ( !current_user_can('edit_post', $entry['ID']) )
 673                         $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
 674
 675                 extract($entry);
 676
 677                 $post_title = $parsed->title[1];
 678                 $post_content = $parsed->summary[1];
 679                 $pubtimes = $this->get_publish_time($parsed->updated);
 680                 $post_modified = $pubtimes[0];
 681                 $post_modified_gmt = $pubtimes[1];
 682
 683                 $postdata = compact('ID', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_modified', 'post_modified_gmt');
 684                 $this->escape($postdata);
 685
 686                 $result = wp_update_post($postdata);
 687
 688                 if ( !$result )
 689                         $this->internal_error(__('For some strange yet very annoying reason, this post could not be edited.'));
 690
 691                 log_app('function',"put_attachment($postID)");
 692                 $this->ok();
 693         }
 694
 695         /**
 696          * Remove attachment.
 697          *
 698          * @since 2.2.0
 699          *
 700          * @param int $postID Post ID.
 701          */
 702         function delete_attachment($postID) {
 703                 log_app('function',"delete_attachment($postID). File '$location' deleted.");
 704
 705                 // check for not found
 706                 global $entry;
 707                 $this->set_current_entry($postID);
 708
 709                 if ( !current_user_can('edit_post', $postID) )
 710                         $this->auth_required(__('Sorry, you do not have the right to delete this post.'));
 711
 712                 $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
 713                 $filetype = wp_check_filetype($location);
 714
 715                 if ( !isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']) )
 716                         $this->internal_error(__('Error occurred while accessing post metadata for file location.'));
 717
 718                 // delete file
 719                 @unlink($location);
 720
 721                 // delete attachment
 722                 $result = wp_delete_post($postID);
 723
 724                 if ( !$result )
 725                         $this->internal_error(__('For some strange yet very annoying reason, this post could not be deleted.'));
 726
 727                 log_app('function',"delete_attachment($postID). File '$location' deleted.");
 728                 $this->ok();
 729         }
 730
 731         /**
 732          * Retrieve attachment from post.
 733          *
 734          * @since 2.2.0
 735          *
 736          * @param int $postID Post ID.
 737          */
 738         function get_file($postID) {
 739
 740                 // check for not found
 741                 global $entry;
 742                 $this->set_current_entry($postID);
 743
 744                 // then whether user can edit the specific post
 745                 if ( !current_user_can('edit_post', $postID) )
 746                         $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
 747
 748                 $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
 749                 $location = get_option ('upload_path') . '/' . $location;
 750                 $filetype = wp_check_filetype($location);
 751
 752                 if ( !isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']) )
 753                         $this->internal_error(__('Error occurred while accessing post metadata for file location.'));
 754
 755                 status_header('200');
 756                 header('Content-Type: ' . $entry['post_mime_type']);
 757                 header('Connection: close');
 758
 759                 if ( $fp = fopen($location, "rb") ) {
 760                         status_header('200');
 761                         header('Content-Type: ' . $entry['post_mime_type']);
 762                         header('Connection: close');
 763
 764                         while ( !feof($fp) ) {
 765                                 echo fread($fp, 4096);
 766                         }
 767
 768                         fclose($fp);
 769                 } else {
 770                         status_header ('404');
 771                 }
 772
 773                 log_app('function',"get_file($postID)");
 774                 exit;
 775         }
 776
 777         /**
 778          * Upload file to blog and add attachment to post.
 779          *
 780          * @since 2.2.0
 781          *
 782          * @param int $postID Post ID.
 783          */
 784         function put_file($postID) {
 785
 786                 // first check if user can upload
 787                 if ( !current_user_can('upload_files') )
 788                         $this->auth_required(__('You do not have permission to upload files.'));
 789
 790                 // check for not found
 791                 global $entry;
 792                 $this->set_current_entry($postID);
 793
 794                 // then whether user can edit the specific post
 795                 if ( !current_user_can('edit_post', $postID) )
 796                         $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
 797
 798                 $upload_dir = wp_upload_dir( );
 799                 $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
 800                 $filetype = wp_check_filetype($location);
 801
 802                 $location = "{$upload_dir['basedir']}/{$location}";
 803
 804                 if (!isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']))
 805                         $this->internal_error(__('Error occurred while accessing post metadata for file location.'));
 806
 807                 $fp = fopen("php://input", "rb");
 808                 $localfp = fopen($location, "w+");
 809                 while ( !feof($fp) ) {
 810                         fwrite($localfp,fread($fp, 4096));
 811                 }
 812                 fclose($fp);
 813                 fclose($localfp);
 814
 815                 $ID = $entry['ID'];
 816                 $pubtimes = $this->get_publish_time($entry->published);
 817                 $post_date = $pubtimes[0];
 818                 $post_date_gmt = $pubtimes[1];
 819                 $pubtimes = $this->get_publish_time($parsed->updated);
 820                 $post_modified = $pubtimes[0];
 821                 $post_modified_gmt = $pubtimes[1];
 822
 823                 $post_data = compact('ID', 'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt');
 824                 $result = wp_update_post($post_data);
 825
 826                 if ( !$result )
 827                         $this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
 828
 829                 wp_update_attachment_metadata( $postID, wp_generate_attachment_metadata( $postID, $location ) );
 830
 831                 log_app('function',"put_file($postID)");
 832                 $this->ok();
 833         }
 834
 835         /**
 836          * Retrieve entries URL.
 837          *
 838          * @since 2.2.0
 839          *
 840          * @param int $page Page ID.
 841          * @return string
 842          */
 843         function get_entries_url($page = null) {
 844                 if ( isset($GLOBALS['post_type']) && ( $GLOBALS['post_type'] == 'attachment' ) )
 845                         $path = $this->MEDIA_PATH;
 846                 else
 847                         $path = $this->ENTRIES_PATH;
 848                 $url = $this->app_base . $path;
 849                 if ( isset($page) && is_int($page) )
 850                         $url .= "/$page";
 851                 return $url;
 852         }
 853
 854         /**
 855          * Display entries URL.
 856          *
 857          * @since 2.2.0
 858          *
 859          * @param int $page Page ID.
 860          */
 861         function the_entries_url($page = null) {
 862                 echo $this->get_entries_url($page);
 863         }
 864
 865         /**
 866          * Retrieve categories URL.
 867          *
 868          * @since 2.2.0
 869          *
 870          * @param mixed $deprecated Not used.
 871          * @return string
 872          */
 873         function get_categories_url($deprecated = '') {
 874                 if ( !empty( $deprecated ) )
 875                         _deprecated_argument( __FUNCTION__, '2.5' );
 876                 return $this->app_base . $this->CATEGORIES_PATH;
 877         }
 878
 879         /**
 880          * Display category URL.
 881          *
 882          * @since 2.2.0
 883          */
 884         function the_categories_url() {
 885                 echo $this->get_categories_url();
 886         }
 887
 888         /**
 889          * Retrieve attachment URL.
 890          *
 891          * @since 2.2.0
 892          *
 893          * @param int $page Page ID.
 894          * @return string
 895          */
 896         function get_attachments_url($page = null) {
 897                 $url = $this->app_base . $this->MEDIA_PATH;
 898                 if (isset($page) && is_int($page)) {
 899                         $url .= "/$page";
 900                 }
 901                 return $url;
 902         }
 903
 904         /**
 905          * Display attachment URL.
 906          *
 907          * @since 2.2.0
 908          *
 909          * @param int $page Page ID.
 910          */
 911         function the_attachments_url($page = null) {
 912                 echo $this->get_attachments_url($page);
 913         }
 914
 915         /**
 916          * Retrieve service URL.
 917          *
 918          * @since 2.3.0
 919          *
 920          * @return string
 921          */
 922         function get_service_url() {
 923                 return $this->app_base . $this->SERVICE_PATH;
 924         }
 925
 926         /**
 927          * Retrieve entry URL.
 928          *
 929          * @since 2.7.0
 930          *
 931          * @param int $postID Post ID.
 932          * @return string
 933          */
 934         function get_entry_url($postID = null) {
 935                 if (!isset($postID)) {
 936                         global $post;
 937                         $postID = (int) $post->ID;
 938                 }
 939
 940                 $url = $this->app_base . $this->ENTRY_PATH . "/$postID";
 941
 942                 log_app('function',"get_entry_url() = $url");
 943                 return $url;
 944         }
 945
 946         /**
 947          * Display entry URL.
 948          *
 949          * @since 2.7.0
 950          *
 951          * @param int $postID Post ID.
 952          */
 953         function the_entry_url($postID = null) {
 954                 echo $this->get_entry_url($postID);
 955         }
 956
 957         /**
 958          * Retrieve media URL.
 959          *
 960          * @since 2.2.0
 961          *
 962          * @param int $postID Post ID.
 963          * @return string
 964          */
 965         function get_media_url($postID = null) {
 966                 if (!isset($postID)) {
 967                         global $post;
 968                         $postID = (int) $post->ID;
 969                 }
 970
 971                 $url = $this->app_base . $this->MEDIA_SINGLE_PATH ."/file/$postID";
 972
 973                 log_app('function',"get_media_url() = $url");
 974                 return $url;
 975         }
 976
 977         /**
 978          * Display the media URL.
 979          *
 980          * @since 2.2.0
 981          *
 982          * @param int $postID Post ID.
 983          */
 984         function the_media_url($postID = null) {
 985                 echo $this->get_media_url($postID);
 986         }
 987
 988         /**
 989          * Set the current entry to post ID.
 990          *
 991          * @since 2.2.0
 992          *
 993          * @param int $postID Post ID.
 994          */
 995         function set_current_entry($postID) {
 996                 global $entry;
 997                 log_app('function',"set_current_entry($postID)");
 998
 999                 if (!isset($postID)) {
1000                         // $this->bad_request();
1001                         $this->not_found();
1002                 }
1003
1004                 $entry = wp_get_single_post($postID,ARRAY_A);
1005
1006                 if (!isset($entry) || !isset($entry['ID']))
1007                         $this->not_found();
1008
1009                 return;
1010         }
1011
1012         /**
1013          * Display posts XML.
1014          *
1015          * @since 2.2.0
1016          *
1017          * @param int $page Optional. Page ID.
1018          * @param string $post_type Optional, default is 'post'. Post Type.
1019          */
1020         function get_posts($page = 1, $post_type = 'post') {
1021                         log_app('function',"get_posts($page, '$post_type')");
1022                         $feed = $this->get_feed($page, $post_type);
1023                         $this->output($feed);
1024         }
1025
1026         /**
1027          * Display attachment XML.
1028          *
1029          * @since 2.2.0
1030          *
1031          * @param int $page Page ID.
1032          * @param string $post_type Optional, default is 'attachment'. Post type.
1033          */
1034         function get_attachments($page = 1, $post_type = 'attachment') {
1035                 log_app('function',"get_attachments($page, '$post_type')");
1036                 $GLOBALS['post_type'] = $post_type;
1037                 $feed = $this->get_feed($page, $post_type);
1038                 $this->output($feed);
1039         }
1040
1041         /**
1042          * Retrieve feed XML.
1043          *
1044          * @since 2.2.0
1045          *
1046          * @param int $page Page ID.
1047          * @param string $post_type Optional, default is post. Post type.
1048          * @return string
1049          */
1050         function get_feed($page = 1, $post_type = 'post') {
1051                 global $post, $wp, $wp_query, $posts, $wpdb, $blog_id;
1052                 log_app('function',"get_feed($page, '$post_type')");
1053                 ob_start();
1054
1055                 $this->ENTRY_PATH = $post_type;
1056
1057                 if (!isset($page)) {
1058                         $page = 1;
1059                 }
1060                 $page = (int) $page;
1061
1062                 $count = get_option('posts_per_rss');
1063
1064                 wp('posts_per_page=' . $count . '&offset=' . ($count * ($page-1) . '&orderby=modified'));
1065
1066                 $post = $GLOBALS['post'];
1067                 $posts = $GLOBALS['posts'];
1068                 $wp = $GLOBALS['wp'];
1069                 $wp_query = $GLOBALS['wp_query'];
1070                 $wpdb = $GLOBALS['wpdb'];
1071                 $blog_id = (int) $GLOBALS['blog_id'];
1072                 log_app('function',"query_posts(# " . print_r($wp_query, true) . "#)");
1073
1074                 log_app('function',"total_count(# $wp_query->max_num_pages #)");
1075                 $last_page = $wp_query->max_num_pages;
1076                 $next_page = (($page + 1) > $last_page) ? NULL : $page + 1;
1077                 $prev_page = ($page - 1) < 1 ? NULL : $page - 1;
1078                 $last_page = ((int)$last_page == 1 || (int)$last_page == 0) ? NULL : (int) $last_page;
1079                 $self_page = $page > 1 ? $page : NULL;
1080 ?><feed xmlns="<?php echo $this->ATOM_NS ?>" xmlns:app="<?php echo $this->ATOMPUB_NS ?>" xml:lang="<?php echo get_option('rss_language'); ?>" <?php do_action('app_ns'); ?> >
1081 <id><?php $this->the_entries_url() ?></id>
1082 <updated><?php echo mysql2date('Y-m-d\TH:i:s\Z', get_lastpostmodified('GMT'), false); ?></updated>
1083 <title type="text"><?php bloginfo_rss('name') ?></title>
1084 <subtitle type="text"><?php bloginfo_rss("description") ?></subtitle>
1085 <link rel="first" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url() ?>" />
1086 <?php if (isset($prev_page)): ?>
1087 <link rel="previous" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($prev_page) ?>" />
1088 <?php endif; ?>
1089 <?php if (isset($next_page)): ?>
1090 <link rel="next" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($next_page) ?>" />
1091 <?php endif; ?>
1092 <link rel="last" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($last_page) ?>" />
1093 <link rel="self" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($self_page) ?>" />
1094 <rights type="text">Copyright <?php echo date('Y'); ?></rights>
1095 <?php do_action('app_head'); ?>
1096 <?php if ( have_posts() ) {
1097                         while ( have_posts() ) {
1098                                 the_post();
1099                                 $this->echo_entry();
1100                         }
1101                 }
1102 ?></feed>
1103 <?php
1104                 $feed = ob_get_contents();
1105                 ob_end_clean();
1106                 return $feed;
1107         }
1108
1109         /**
1110          * Display entry XML.
1111          *
1112          * @since 2.2.0
1113          *
1114          * @param int $postID Post ID.
1115          * @param string $post_type Optional, default is post. Post type.
1116          * @return string.
1117          */
1118         function get_entry($postID, $post_type = 'post') {
1119                 log_app('function',"get_entry($postID, '$post_type')");
1120                 ob_start();
1121                 switch($post_type) {
1122                         case 'post':
1123                                 $varname = 'p';
1124                                 break;
1125                         case 'attachment':
1126                                 $this->ENTRY_PATH = 'attachment';
1127                                 $varname = 'attachment_id';
1128                                 break;
1129                 }
1130                 query_posts($varname . '=' . $postID);
1131                 if ( have_posts() ) {
1132                         while ( have_posts() ) {
1133                                 the_post();
1134                                 $this->echo_entry();
1135                                 log_app('$post',print_r($GLOBALS['post'],true));
1136                                 $entry = ob_get_contents();
1137                                 break;
1138                         }
1139                 }
1140                 ob_end_clean();
1141
1142                 log_app('get_entry returning:',$entry);
1143                 return $entry;
1144         }
1145
1146         /**
1147          * Display post content XML.
1148          *
1149          * @since 2.3.0
1150          */
1151         function echo_entry() { ?>
1152 <entry xmlns="<?php echo $this->ATOM_NS ?>"
1153        xmlns:app="<?php echo $this->ATOMPUB_NS ?>" xml:lang="<?php echo get_option('rss_language'); ?>">
1154         <id><?php the_guid( $GLOBALS['post']->ID ); ?></id>
1155 <?php list($content_type, $content) = prep_atom_text_construct(get_the_title()); ?>
1156         <title type="<?php echo $content_type ?>"><?php echo $content ?></title>
1157         <updated><?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?></updated>
1158         <published><?php echo get_post_time('Y-m-d\TH:i:s\Z', true); ?></published>
1159         <app:edited><?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?></app:edited>
1160         <app:control>
1161                 <app:draft><?php echo ($GLOBALS['post']->post_status == 'draft' ? 'yes' : 'no') ?></app:draft>
1162         </app:control>
1163         <author>
1164                 <name><?php the_author()?></name>
1165 <?php if ( get_the_author_meta('url') && get_the_author_meta('url') != 'http://' ) { ?>
1166                 <uri><?php the_author_meta('url') ?></uri>
1167 <?php } ?>
1168         </author>
1169 <?php if ($GLOBALS['post']->post_type == 'attachment') { ?>
1170         <link rel="edit-media" href="<?php $this->the_media_url() ?>" />
1171         <content type="<?php echo $GLOBALS['post']->post_mime_type ?>" src="<?php the_guid() ; ?>"/>
1172 <?php } else { ?>
1173         <link href="<?php the_permalink_rss() ?>" />
1174 <?php if ( strlen( $GLOBALS['post']->post_content ) ) :
1175 list($content_type, $content) = prep_atom_text_construct(get_the_content()); ?>
1176         <content type="<?php echo $content_type ?>"><?php echo $content ?></content>
1177 <?php endif; ?>
1178 <?php } ?>
1179         <link rel="edit" href="<?php $this->the_entry_url() ?>" />
1180         <?php the_category_rss( 'atom' ); ?>
1181 <?php list($content_type, $content) = prep_atom_text_construct(get_the_excerpt()); ?>
1182         <summary type="<?php echo $content_type ?>"><?php echo $content ?></summary>
1183         <?php do_action('app_entry'); ?>
1184 </entry>
1185 <?php }
1186
1187         /**
1188          * Set 'OK' (200) status header.
1189          *
1190          * @since 2.2.0
1191          */
1192         function ok() {
1193                 log_app('Status','200: OK');
1194                 header('Content-Type: text/plain');
1195                 status_header('200');
1196                 exit;
1197         }
1198
1199         /**
1200          * Set 'No Content' (204) status header.
1201          *
1202          * @since 2.2.0
1203          */
1204         function no_content() {
1205                 log_app('Status','204: No Content');
1206                 header('Content-Type: text/plain');
1207                 status_header('204');
1208                 echo "Moved to Trash.";
1209                 exit;
1210         }
1211
1212         /**
1213          * Display 'Internal Server Error' (500) status header.
1214          *
1215          * @since 2.2.0
1216          *
1217          * @param string $msg Optional. Status string.
1218          */
1219         function internal_error($msg = 'Internal Server Error') {
1220                 log_app('Status','500: Server Error');
1221                 header('Content-Type: text/plain');
1222                 status_header('500');
1223                 echo $msg;
1224                 exit;
1225         }
1226
1227         /**
1228          * Set 'Bad Request' (400) status header.
1229          *
1230          * @since 2.2.0
1231          */
1232         function bad_request() {
1233                 log_app('Status','400: Bad Request');
1234                 header('Content-Type: text/plain');
1235                 status_header('400');
1236                 exit;
1237         }
1238
1239         /**
1240          * Set 'Length Required' (411) status header.
1241          *
1242          * @since 2.2.0
1243          */
1244         function length_required() {
1245                 log_app('Status','411: Length Required');
1246                 header("HTTP/1.1 411 Length Required");
1247                 header('Content-Type: text/plain');
1248                 status_header('411');
1249                 exit;
1250         }
1251
1252         /**
1253          * Set 'Unsupported Media Type' (415) status header.
1254          *
1255          * @since 2.2.0
1256          */
1257         function invalid_media() {
1258                 log_app('Status','415: Unsupported Media Type');
1259                 header("HTTP/1.1 415 Unsupported Media Type");
1260                 header('Content-Type: text/plain');
1261                 exit;
1262         }
1263
1264         /**
1265          * Set 'Forbidden' (403) status header.
1266          *
1267          * @since 2.6.0
1268          */
1269         function forbidden($reason='') {
1270                 log_app('Status','403: Forbidden');
1271                 header('Content-Type: text/plain');
1272                 status_header('403');
1273                 echo $reason;
1274                 exit;
1275         }
1276
1277         /**
1278          * Set 'Not Found' (404) status header.
1279          *
1280          * @since 2.2.0
1281          */
1282         function not_found() {
1283                 log_app('Status','404: Not Found');
1284                 header('Content-Type: text/plain');
1285                 status_header('404');
1286                 exit;
1287         }
1288
1289         /**
1290          * Set 'Not Allowed' (405) status header.
1291          *
1292          * @since 2.2.0
1293          */
1294         function not_allowed($allow) {
1295                 log_app('Status','405: Not Allowed');
1296                 header('Allow: ' . join(',', $allow));
1297                 status_header('405');
1298                 exit;
1299         }
1300
1301         /**
1302          * Display Redirect (302) content and set status headers.
1303          *
1304          * @since 2.3.0
1305          */
1306         function redirect($url) {
1307
1308                 log_app('Status','302: Redirect');
1309                 $escaped_url = esc_attr($url);
1310                 $content = <<<EOD
1311 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
1312 <html>
1313   <head>
1314     <title>302 Found</title>
1315   </head>
1316 <body>
1317   <h1>Found</h1>
1318   <p>The document has moved <a href="$escaped_url">here</a>.</p>
1319   </body>
1320 </html>
1321
1322 EOD;
1323                 header('HTTP/1.1 302 Moved');
1324                 header('Content-Type: text/html');
1325                 header('Location: ' . $url);
1326                 echo $content;
1327                 exit;
1328
1329         }
1330
1331         /**
1332          * Set 'Client Error' (400) status header.
1333          *
1334          * @since 2.2.0
1335          */
1336         function client_error($msg = 'Client Error') {
1337                 log_app('Status','400: Client Error');
1338                 header('Content-Type: text/plain');
1339                 status_header('400');
1340                 exit;
1341         }
1342
1343         /**
1344          * Set created status headers (201).
1345          *
1346          * Sets the 'content-type', 'content-location', and 'location'.
1347          *
1348          * @since 2.2.0
1349          */
1350         function created($post_ID, $content, $post_type = 'post') {
1351                 log_app('created()::$post_ID',"$post_ID, $post_type");
1352                 $edit = $this->get_entry_url($post_ID);
1353                 switch($post_type) {
1354                         case 'post':
1355                                 $ctloc = $this->get_entry_url($post_ID);
1356                                 break;
1357                         case 'attachment':
1358                                 $edit = $this->app_base . "attachments/$post_ID";
1359                                 break;
1360                 }
1361                 header("Content-Type: $this->ATOM_CONTENT_TYPE");
1362                 if (isset($ctloc))
1363                         header('Content-Location: ' . $ctloc);
1364                 header('Location: ' . $edit);
1365                 status_header('201');
1366                 echo $content;
1367                 exit;
1368         }
1369
1370         /**
1371          * Set 'Auth Required' (401) headers.
1372          *
1373          * @since 2.2.0
1374          *
1375          * @param string $msg Status header content and HTML content.
1376          */
1377         function auth_required($msg) {
1378                 log_app('Status','401: Auth Required');
1379                 nocache_headers();
1380                 header('WWW-Authenticate: Basic realm="WordPress Atom Protocol"');
1381                 header("HTTP/1.1 401 $msg");
1382                 header('Status: 401 ' . $msg);
1383                 header('Content-Type: text/html');
1384                 $content = <<<EOD
1385 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
1386 <html>
1387   <head>
1388     <title>401 Unauthorized</title>
1389   </head>
1390 <body>
1391     <h1>401 Unauthorized</h1>
1392     <p>$msg</p>
1393   </body>
1394 </html>
1395
1396 EOD;
1397                 echo $content;
1398                 exit;
1399         }
1400
1401         /**
1402          * Display XML and set headers with content type.
1403          *
1404          * @since 2.2.0
1405          *
1406          * @param string $xml Display feed content.
1407          * @param string $ctype Optional, default is 'atom+xml'. Feed content type.
1408          */
1409         function output($xml, $ctype = 'application/atom+xml') {
1410                         status_header('200');
1411                         $xml = '<?xml version="1.0" encoding="' . strtolower(get_option('blog_charset')) . '"?>'."\n".$xml;
1412                         header('Connection: close');
1413                         header('Content-Length: '. strlen($xml));
1414                         header('Content-Type: ' . $ctype);
1415                         header('Content-Disposition: attachment; filename=atom.xml');
1416                         header('Date: '. date('r'));
1417                         if ($this->do_output)
1418                                 echo $xml;
1419                         log_app('function', "output:\n$xml");
1420                         exit;
1421         }
1422
1423         /**
1424          * Sanitize content for database usage.
1425          *
1426          * @since 2.2.0
1427          *
1428          * @param array $array Sanitize array and multi-dimension array.
1429          */
1430         function escape(&$array) {
1431                 global $wpdb;
1432
1433                 foreach ($array as $k => $v) {
1434                                 if (is_array($v)) {
1435                                                 $this->escape($array[$k]);
1436                                 } else if (is_object($v)) {
1437                                                 //skip
1438                                 } else {
1439                                                 $array[$k] = $wpdb->escape($v);
1440                                 }
1441                 }
1442         }
1443
1444         /**
1445          * Access credential through various methods and perform login.
1446          *
1447          * @since 2.2.0
1448          *
1449          * @return bool
1450          */
1451         function authenticate() {
1452                 log_app("authenticate()",print_r($_ENV, true));
1453
1454                 // if using mod_rewrite/ENV hack
1455                 // http://www.besthostratings.com/articles/http-auth-php-cgi.html
1456                 if (isset($_SERVER['HTTP_AUTHORIZATION'])) {
1457                         list($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']) =
1458                                 explode(':', base64_decode(substr($_SERVER['HTTP_AUTHORIZATION'], 6)));
1459                 } else if (isset($_SERVER['REDIRECT_REMOTE_USER'])) {
1460                         // Workaround for setups that do not forward HTTP_AUTHORIZATION
1461                         // See http://trac.wordpress.org/ticket/7361
1462                         list($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']) =
1463                                 explode(':', base64_decode(substr($_SERVER['REDIRECT_REMOTE_USER'], 6)));
1464                 }
1465
1466                 // If Basic Auth is working...
1467                 if (isset($_SERVER['PHP_AUTH_USER']) && isset($_SERVER['PHP_AUTH_PW'])) {
1468                         log_app("Basic Auth",$_SERVER['PHP_AUTH_USER']);
1469
1470                         $user = wp_authenticate($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']);
1471                         if ( $user && !is_wp_error($user) ) {
1472                                 wp_set_current_user($user->ID);
1473                                 log_app("authenticate()", $user->user_login);
1474                                 return true;
1475                         }
1476                 }
1477
1478                 return false;
1479         }
1480
1481         /**
1482          * Retrieve accepted content types.
1483          *
1484          * @since 2.2.0
1485          *
1486          * @param array $types Optional. Content Types.
1487          * @return string
1488          */
1489         function get_accepted_content_type($types = null) {
1490
1491                 if (!isset($types)) {
1492                         $types = $this->media_content_types;
1493                 }
1494
1495                 if (!isset($_SERVER['CONTENT_LENGTH']) || !isset($_SERVER['CONTENT_TYPE'])) {
1496                         $this->length_required();
1497                 }
1498
1499                 $type = $_SERVER['CONTENT_TYPE'];
1500                 list($type,$subtype) = explode('/',$type);
1501                 list($subtype) = explode(";",$subtype); // strip MIME parameters
1502                 log_app("get_accepted_content_type", "type=$type, subtype=$subtype");
1503
1504                 foreach($types as $t) {
1505                         list($acceptedType,$acceptedSubtype) = explode('/',$t);
1506                         if ($acceptedType == '*' || $acceptedType == $type) {
1507                                 if ($acceptedSubtype == '*' || $acceptedSubtype == $subtype)
1508                                         return $type . "/" . $subtype;
1509                         }
1510                 }
1511
1512                 $this->invalid_media();
1513         }
1514
1515         /**
1516          * Process conditionals for posts.
1517          *
1518          * @since 2.2.0
1519          */
1520         function process_conditionals() {
1521
1522                 if (empty($this->params)) return;
1523                 if ($_SERVER['REQUEST_METHOD'] == 'DELETE') return;
1524
1525                 switch($this->params[0]) {
1526                         case $this->ENTRY_PATH:
1527                                 global $post;
1528                                 $post = wp_get_single_post($this->params[1]);
1529                                 $wp_last_modified = get_post_modified_time('D, d M Y H:i:s', true);
1530                                 $post = NULL;
1531                                 break;
1532                         case $this->ENTRIES_PATH:
1533                                 $wp_last_modified = mysql2date('D, d M Y H:i:s', get_lastpostmodified('GMT'), 0).' GMT';
1534                                 break;
1535                         default:
1536                                 return;
1537                 }
1538                 $wp_etag = md5($wp_last_modified);
1539                 @header("Last-Modified: $wp_last_modified");
1540                 @header("ETag: $wp_etag");
1541
1542                 // Support for Conditional GET
1543                 if (isset($_SERVER['HTTP_IF_NONE_MATCH']))
1544                         $client_etag = stripslashes($_SERVER['HTTP_IF_NONE_MATCH']);
1545                 else
1546                         $client_etag = false;
1547
1548                 $client_last_modified = trim( $_SERVER['HTTP_IF_MODIFIED_SINCE']);
1549                 // If string is empty, return 0. If not, attempt to parse into a timestamp
1550                 $client_modified_timestamp = $client_last_modified ? strtotime($client_last_modified) : 0;
1551
1552                 // Make a timestamp for our most recent modification...
1553                 $wp_modified_timestamp = strtotime($wp_last_modified);
1554
1555                 if ( ($client_last_modified && $client_etag) ?
1556                 (($client_modified_timestamp >= $wp_modified_timestamp) && ($client_etag == $wp_etag)) :
1557                 (($client_modified_timestamp >= $wp_modified_timestamp) || ($client_etag == $wp_etag)) ) {
1558                         status_header( 304 );
1559                         exit;
1560                 }
1561         }
1562
1563         /**
1564          * Convert RFC3339 time string to timestamp.
1565          *
1566          * @since 2.3.0
1567          *
1568          * @param string $str String to time.
1569          * @return bool|int false if format is incorrect.
1570          */
1571         function rfc3339_str2time($str) {
1572
1573                 $match = false;
1574                 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, $match))
1575                         return false;
1576
1577                 if ($match[3] == 'Z')
1578                         $match[3] = '+0000';
1579
1580                 return strtotime($match[1] . " " . $match[2] . " " . $match[3]);
1581         }
1582
1583         /**
1584          * Retrieve published time to display in XML.
1585          *
1586          * @since 2.3.0
1587          *
1588          * @param string $published Time string.
1589          * @return string
1590          */
1591         function get_publish_time($published) {
1592
1593                 $pubtime = $this->rfc3339_str2time($published);
1594
1595                 if (!$pubtime) {
1596                         return array(current_time('mysql'),current_time('mysql',1));
1597                 } else {
1598                         return array(date("Y-m-d H:i:s", $pubtime), gmdate("Y-m-d H:i:s", $pubtime));
1599                 }
1600         }
1601
1602 }
1603
1604 /**
1605  * AtomServer
1606  * @var AtomServer
1607  * @global object $server
1608  */
1609 $server = new AtomServer();
1610 $server->handle_request();
1611
1612 ?>