wp-app.php

   1 <?php
   2 /**
   3  * Atom Publishing Protocol support for WordPress
   4  *
   5  * @author Original by Elias Torres <http://torrez.us/archives/2006/08/31/491/>
   6  * @author Modified by Dougal Campbell <http://dougal.gunters.org/>
   7  * @version 1.0.5-dc
   8  */
   9
  10 /**
  11  * WordPress is handling an Atom Publishing Protocol request.
  12  *
  13  * @var bool
  14  */
  15 define('APP_REQUEST', true);
  16
  17 /** Set up WordPress environment */
  18 require_once('./wp-load.php');
  19
  20 /** Post Template API */
  21 require_once(ABSPATH . WPINC . '/post-template.php');
  22
  23 /** Atom Publishing Protocol Class */
  24 require_once(ABSPATH . WPINC . '/atomlib.php');
  25
  26 /** Feed Handling API */
  27 require_once(ABSPATH . WPINC . '/feed.php');
  28
  29 $_SERVER['PATH_INFO'] = preg_replace( '/.*\/wp-app\.php/', '', $_SERVER['REQUEST_URI'] );
  30
  31 /**
  32  * Whether to enable Atom Publishing Protocol Logging.
  33  *
  34  * @name app_logging
  35  * @var int|bool
  36  */
  37 $app_logging = 0;
  38
  39 /**
  40  * Whether to always authenticate user. Permanently set to true.
  41  *
  42  * @name always_authenticate
  43  * @var int|bool
  44  * @todo Should be an option somewhere
  45  */
  46 $always_authenticate = 1;
  47
  48 /**
  49  * Writes logging info to a file.
  50  *
  51  * @since 2.2.0
  52  * @uses $app_logging
  53  * @package WordPress
  54  * @subpackage Logging
  55  *
  56  * @param string $label Type of logging
  57  * @param string $msg Information describing logging reason.
  58  */
  59 function log_app($label,$msg) {
  60         global $app_logging;
  61         if ($app_logging) {
  62                 $fp = fopen( 'wp-app.log', 'a+');
  63                 $date = gmdate( 'Y-m-d H:i:s' );
  64                 fwrite($fp, "\n\n$date - $label\n$msg\n");
  65                 fclose($fp);
  66         }
  67 }
  68
  69 if ( !function_exists('wp_set_current_user') ) :
  70 /**
  71  * @ignore
  72  */
  73 function wp_set_current_user($id, $name = '') {
  74         global $current_user;
  75
  76         if ( isset($current_user) && ($id == $current_user->ID) )
  77                 return $current_user;
  78
  79         $current_user = new WP_User($id, $name);
  80
  81         return $current_user;
  82 }
  83 endif;
  84
  85 /**
  86  * Filter to add more post statuses.
  87  *
  88  * @since 2.2.0
  89  *
  90  * @param string $where SQL statement to filter.
  91  * @return string Filtered SQL statement with added post_status for where clause.
  92  */
  93 function wa_posts_where_include_drafts_filter($where) {
  94         $where = str_replace("post_status = 'publish'","post_status = 'publish' OR post_status = 'future' OR post_status = 'draft' OR post_status = 'inherit'", $where);
  95         return $where;
  96
  97 }
  98 add_filter('posts_where', 'wa_posts_where_include_drafts_filter');
  99
 100 /**
 101  * WordPress AtomPub API implementation.
 102  *
 103  * @package WordPress
 104  * @subpackage Publishing
 105  * @since 2.2.0
 106  */
 107 class AtomServer {
 108
 109         /**
 110          * ATOM content type.
 111          *
 112          * @since 2.2.0
 113          * @var string
 114          */
 115         var $ATOM_CONTENT_TYPE = 'application/atom+xml';
 116
 117         /**
 118          * Categories ATOM content type.
 119          *
 120          * @since 2.2.0
 121          * @var string
 122          */
 123         var $CATEGORIES_CONTENT_TYPE = 'application/atomcat+xml';
 124
 125         /**
 126          * Service ATOM content type.
 127          *
 128          * @since 2.3.0
 129          * @var string
 130          */
 131         var $SERVICE_CONTENT_TYPE = 'application/atomsvc+xml';
 132
 133         /**
 134          * ATOM XML namespace.
 135          *
 136          * @since 2.3.0
 137          * @var string
 138          */
 139         var $ATOM_NS = 'http://www.w3.org/2005/Atom';
 140
 141         /**
 142          * ATOMPUB XML namespace.
 143          *
 144          * @since 2.3.0
 145          * @var string
 146          */
 147         var $ATOMPUB_NS = 'http://www.w3.org/2007/app';
 148
 149         /**
 150          * Entries path.
 151          *
 152          * @since 2.2.0
 153          * @var string
 154          */
 155         var $ENTRIES_PATH = "posts";
 156
 157         /**
 158          * Categories path.
 159          *
 160          * @since 2.2.0
 161          * @var string
 162          */
 163         var $CATEGORIES_PATH = "categories";
 164
 165         /**
 166          * Media path.
 167          *
 168          * @since 2.2.0
 169          * @var string
 170          */
 171         var $MEDIA_PATH = "attachments";
 172
 173         /**
 174          * Entry path.
 175          *
 176          * @since 2.2.0
 177          * @var string
 178          */
 179         var $ENTRY_PATH = "post";
 180
 181         /**
 182          * Service path.
 183          *
 184          * @since 2.2.0
 185          * @var string
 186          */
 187         var $SERVICE_PATH = "service";
 188
 189         /**
 190          * Media single path.
 191          *
 192          * @since 2.2.0
 193          * @var string
 194          */
 195         var $MEDIA_SINGLE_PATH = "attachment";
 196
 197         /**
 198          * ATOMPUB parameters.
 199          *
 200          * @since 2.2.0
 201          * @var array
 202          */
 203         var $params = array();
 204
 205         /**
 206          * Supported ATOMPUB media types.
 207          *
 208          * @since 2.3.0
 209          * @var array
 210          */
 211         var $media_content_types = array('image/*','audio/*','video/*');
 212
 213         /**
 214          * ATOMPUB content type(s).
 215          *
 216          * @since 2.2.0
 217          * @var array
 218          */
 219         var $atom_content_types = array('application/atom+xml');
 220
 221         /**
 222          * ATOMPUB methods.
 223          *
 224          * @since 2.2.0
 225          * @var unknown_type
 226          */
 227         var $selectors = array();
 228
 229         /**
 230          * Whether to do output.
 231          *
 232          * Support for head.
 233          *
 234          * @since 2.2.0
 235          * @var bool
 236          */
 237         var $do_output = true;
 238
 239         /**
 240          * PHP4 constructor - Sets up object properties.
 241          *
 242          * @since 2.2.0
 243          * @return AtomServer
 244          */
 245         function AtomServer() {
 246
 247                 $this->script_name = array_pop(explode('/',$_SERVER['SCRIPT_NAME']));
 248                 $this->app_base = get_bloginfo('url') . '/' . $this->script_name . '/';
 249                 if ( isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) == 'on' ) {
 250                         $this->app_base = preg_replace( '/^http:\/\//', 'https://', $this->app_base );
 251                 }
 252
 253                 $this->selectors = array(
 254                         '@/service$@' =>
 255                                 array('GET' => 'get_service'),
 256                         '@/categories$@' =>
 257                                 array('GET' => 'get_categories_xml'),
 258                         '@/post/(\d+)$@' =>
 259                                 array('GET' => 'get_post',
 260                                                 'PUT' => 'put_post',
 261                                                 'DELETE' => 'delete_post'),
 262                         '@/posts/?(\d+)?$@' =>
 263                                 array('GET' => 'get_posts',
 264                                                 'POST' => 'create_post'),
 265                         '@/attachments/?(\d+)?$@' =>
 266                                 array('GET' => 'get_attachment',
 267                                                 'POST' => 'create_attachment'),
 268                         '@/attachment/file/(\d+)$@' =>
 269                                 array('GET' => 'get_file',
 270                                                 'PUT' => 'put_file',
 271                                                 'DELETE' => 'delete_file'),
 272                         '@/attachment/(\d+)$@' =>
 273                                 array('GET' => 'get_attachment',
 274                                                 'PUT' => 'put_attachment',
 275                                                 'DELETE' => 'delete_attachment'),
 276                 );
 277         }
 278
 279         /**
 280          * Handle ATOMPUB request.
 281          *
 282          * @since 2.2.0
 283          */
 284         function handle_request() {
 285                 global $always_authenticate;
 286
 287                 if( !empty( $_SERVER['ORIG_PATH_INFO'] ) )
 288                         $path = $_SERVER['ORIG_PATH_INFO'];
 289                 else
 290                         $path = $_SERVER['PATH_INFO'];
 291
 292                 $method = $_SERVER['REQUEST_METHOD'];
 293
 294                 log_app('REQUEST',"$method $path\n================");
 295
 296                 $this->process_conditionals();
 297                 //$this->process_conditionals();
 298
 299                 // exception case for HEAD (treat exactly as GET, but don't output)
 300                 if($method == 'HEAD') {
 301                         $this->do_output = false;
 302                         $method = 'GET';
 303                 }
 304
 305                 // redirect to /service in case no path is found.
 306                 if(strlen($path) == 0 || $path == '/') {
 307                         $this->redirect($this->get_service_url());
 308                 }
 309
 310                 // check to see if AtomPub is enabled
 311                 if( !get_option( 'enable_app' ) )
 312                         $this->forbidden( sprintf( __( 'AtomPub services are disabled on this blog.  An admin user can enable them at %s' ), admin_url('options-writing.php') ) );
 313
 314                 // dispatch
 315                 foreach($this->selectors as $regex => $funcs) {
 316                         if(preg_match($regex, $path, $matches)) {
 317                         if(isset($funcs[$method])) {
 318
 319                                 // authenticate regardless of the operation and set the current
 320                                 // user. each handler will decide if auth is required or not.
 321                                 if(!$this->authenticate()) {
 322                                         if ($always_authenticate) {
 323                                                 $this->auth_required('Credentials required.');
 324                                         }
 325                                 }
 326
 327                                 array_shift($matches);
 328                                 call_user_func_array(array(&$this,$funcs[$method]), $matches);
 329                                 exit();
 330                         } else {
 331                                 // only allow what we have handlers for...
 332                                 $this->not_allowed(array_keys($funcs));
 333                         }
 334                         }
 335                 }
 336
 337                 // oops, nothing found
 338                 $this->not_found();
 339         }
 340
 341         /**
 342          * Retrieve XML for ATOMPUB service.
 343          *
 344          * @since 2.2.0
 345          */
 346         function get_service() {
 347                 log_app('function','get_service()');
 348
 349                 if( !current_user_can( 'edit_posts' ) )
 350                         $this->auth_required( __( 'Sorry, you do not have the right to access this blog.' ) );
 351
 352                 $entries_url = attribute_escape($this->get_entries_url());
 353                 $categories_url = attribute_escape($this->get_categories_url());
 354                 $media_url = attribute_escape($this->get_attachments_url());
 355                 foreach ($this->media_content_types as $med) {
 356                         $accepted_media_types = $accepted_media_types . "<accept>" . $med . "</accept>";
 357                 }
 358                 $atom_prefix="atom";
 359                 $atom_blogname=get_bloginfo('name');
 360                 $service_doc = <<<EOD
 361 <service xmlns="$this->ATOMPUB_NS" xmlns:$atom_prefix="$this->ATOM_NS">
 362   <workspace>
 363     <$atom_prefix:title>$atom_blogname Workspace</$atom_prefix:title>
 364     <collection href="$entries_url">
 365       <$atom_prefix:title>$atom_blogname Posts</$atom_prefix:title>
 366       <accept>$this->ATOM_CONTENT_TYPE;type=entry</accept>
 367       <categories href="$categories_url" />
 368     </collection>
 369     <collection href="$media_url">
 370       <$atom_prefix:title>$atom_blogname Media</$atom_prefix:title>
 371       $accepted_media_types
 372     </collection>
 373   </workspace>
 374 </service>
 375
 376 EOD;
 377
 378                 $this->output($service_doc, $this->SERVICE_CONTENT_TYPE);
 379         }
 380
 381         /**
 382          * Retrieve categories list in XML format.
 383          *
 384          * @since 2.2.0
 385          */
 386         function get_categories_xml() {
 387                 log_app('function','get_categories_xml()');
 388
 389                 if( !current_user_can( 'edit_posts' ) )
 390                         $this->auth_required( __( 'Sorry, you do not have the right to access this blog.' ) );
 391
 392                 $home = attribute_escape(get_bloginfo_rss('home'));
 393
 394                 $categories = "";
 395                 $cats = get_categories("hierarchical=0&hide_empty=0");
 396                 foreach ((array) $cats as $cat) {
 397                         $categories .= "    <category term=\"" . attribute_escape($cat->name) .  "\" />\n";
 398 }
 399                 $output = <<<EOD
 400 <app:categories xmlns:app="$this->ATOMPUB_NS"
 401         xmlns="$this->ATOM_NS"
 402         fixed="yes" scheme="$home">
 403         $categories
 404 </app:categories>
 405 EOD;
 406         $this->output($output, $this->CATEGORIES_CONTENT_TYPE);
 407 }
 408
 409         /**
 410          * Create new post.
 411          *
 412          * @since 2.2.0
 413          */
 414         function create_post() {
 415                 global $blog_id, $user_ID;
 416                 $this->get_accepted_content_type($this->atom_content_types);
 417
 418                 $parser = new AtomParser();
 419                 if(!$parser->parse()) {
 420                         $this->client_error();
 421                 }
 422
 423                 $entry = array_pop($parser->feed->entries);
 424
 425                 log_app('Received entry:', print_r($entry,true));
 426
 427                 $catnames = array();
 428                 foreach($entry->categories as $cat)
 429                         array_push($catnames, $cat["term"]);
 430
 431                 $wp_cats = get_categories(array('hide_empty' => false));
 432
 433                 $post_category = array();
 434
 435                 foreach($wp_cats as $cat) {
 436                         if(in_array($cat->name, $catnames))
 437                                 array_push($post_category, $cat->term_id);
 438                 }
 439
 440                 $publish = (isset($entry->draft) && trim($entry->draft) == 'yes') ? false : true;
 441
 442                 $cap = ($publish) ? 'publish_posts' : 'edit_posts';
 443
 444                 if(!current_user_can($cap))
 445                         $this->auth_required(__('Sorry, you do not have the right to edit/publish new posts.'));
 446
 447                 $blog_ID = (int ) $blog_id;
 448                 $post_status = ($publish) ? 'publish' : 'draft';
 449                 $post_author = (int) $user_ID;
 450                 $post_title = $entry->title[1];
 451                 $post_content = $entry->content[1];
 452                 $post_excerpt = $entry->summary[1];
 453                 $pubtimes = $this->get_publish_time($entry->published);
 454                 $post_date = $pubtimes[0];
 455                 $post_date_gmt = $pubtimes[1];
 456
 457                 if ( isset( $_SERVER['HTTP_SLUG'] ) )
 458                         $post_name = $_SERVER['HTTP_SLUG'];
 459
 460                 $post_data = compact('blog_ID', 'post_author', 'post_date', 'post_date_gmt', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_name');
 461
 462                 $this->escape($post_data);
 463                 log_app('Inserting Post. Data:', print_r($post_data,true));
 464
 465                 $postID = wp_insert_post($post_data);
 466                 if ( is_wp_error( $postID ) )
 467                         $this->internal_error($postID->get_error_message());
 468
 469                 if (!$postID)
 470                         $this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
 471
 472                 // getting warning here about unable to set headers
 473                 // because something in the cache is printing to the buffer
 474                 // could we clean up wp_set_post_categories or cache to not print
 475                 // this could affect our ability to send back the right headers
 476                 @wp_set_post_categories($postID, $post_category);
 477
 478                 $output = $this->get_entry($postID);
 479
 480                 log_app('function',"create_post($postID)");
 481                 $this->created($postID, $output);
 482         }
 483
 484         /**
 485          * Retrieve post.
 486          *
 487          * @since 2.2.0
 488          *
 489          * @param int $postID Post ID.
 490          */
 491         function get_post($postID) {
 492                 global $entry;
 493
 494                 if( !current_user_can( 'edit_post', $postID ) )
 495                         $this->auth_required( __( 'Sorry, you do not have the right to access this post.' ) );
 496
 497                 $this->set_current_entry($postID);
 498                 $output = $this->get_entry($postID);
 499                 log_app('function',"get_post($postID)");
 500                 $this->output($output);
 501
 502         }
 503
 504         /**
 505          * Update post.
 506          *
 507          * @since 2.2.0
 508          *
 509          * @param int $postID Post ID.
 510          */
 511         function put_post($postID) {
 512                 // checked for valid content-types (atom+xml)
 513                 // quick check and exit
 514                 $this->get_accepted_content_type($this->atom_content_types);
 515
 516                 $parser = new AtomParser();
 517                 if(!$parser->parse()) {
 518                         $this->bad_request();
 519                 }
 520
 521                 $parsed = array_pop($parser->feed->entries);
 522
 523                 log_app('Received UPDATED entry:', print_r($parsed,true));
 524
 525                 // check for not found
 526                 global $entry;
 527                 $this->set_current_entry($postID);
 528
 529                 if(!current_user_can('edit_post', $entry['ID']))
 530                         $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
 531
 532                 $publish = (isset($parsed->draft) && trim($parsed->draft) == 'yes') ? false : true;
 533                 $post_status = ($publish) ? 'publish' : 'draft';
 534
 535                 extract($entry);
 536
 537                 $post_title = $parsed->title[1];
 538                 $post_content = $parsed->content[1];
 539                 $post_excerpt = $parsed->summary[1];
 540                 $pubtimes = $this->get_publish_time($entry->published);
 541                 $post_date = $pubtimes[0];
 542                 $post_date_gmt = $pubtimes[1];
 543                 $pubtimes = $this->get_publish_time($parsed->updated);
 544                 $post_modified = $pubtimes[0];
 545                 $post_modified_gmt = $pubtimes[1];
 546
 547                 $postdata = compact('ID', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt');
 548                 $this->escape($postdata);
 549
 550                 $result = wp_update_post($postdata);
 551
 552                 if (!$result) {
 553                         $this->internal_error(__('For some strange yet very annoying reason, this post could not be edited.'));
 554                 }
 555
 556                 log_app('function',"put_post($postID)");
 557                 $this->ok();
 558         }
 559
 560         /**
 561          * Remove post.
 562          *
 563          * @since 2.2.0
 564          *
 565          * @param int $postID Post ID.
 566          */
 567         function delete_post($postID) {
 568
 569                 // check for not found
 570                 global $entry;
 571                 $this->set_current_entry($postID);
 572
 573                 if(!current_user_can('edit_post', $postID)) {
 574                         $this->auth_required(__('Sorry, you do not have the right to delete this post.'));
 575                 }
 576
 577                 if ($entry['post_type'] == 'attachment') {
 578                         $this->delete_attachment($postID);
 579                 } else {
 580                         $result = wp_delete_post($postID);
 581
 582                         if (!$result) {
 583                                 $this->internal_error(__('For some strange yet very annoying reason, this post could not be deleted.'));
 584                         }
 585
 586                         log_app('function',"delete_post($postID)");
 587                         $this->ok();
 588                 }
 589
 590         }
 591
 592         /**
 593          * Retrieve attachment.
 594          *
 595          * @since 2.2.0
 596          *
 597          * @param int $postID Optional. Post ID.
 598          */
 599         function get_attachment($postID = null) {
 600                 if( !current_user_can( 'upload_files' ) )
 601                         $this->auth_required( __( 'Sorry, you do not have permission to upload files.' ) );
 602
 603                 if (!isset($postID)) {
 604                         $this->get_attachments();
 605                 } else {
 606                         $this->set_current_entry($postID);
 607                         $output = $this->get_entry($postID, 'attachment');
 608                         log_app('function',"get_attachment($postID)");
 609                         $this->output($output);
 610                 }
 611         }
 612
 613         /**
 614          * Create new attachment.
 615          *
 616          * @since 2.2.0
 617          */
 618         function create_attachment() {
 619
 620                 $type = $this->get_accepted_content_type();
 621
 622                 if(!current_user_can('upload_files'))
 623                         $this->auth_required(__('You do not have permission to upload files.'));
 624
 625                 $fp = fopen("php://input", "rb");
 626                 $bits = null;
 627                 while(!feof($fp)) {
 628                         $bits .= fread($fp, 4096);
 629                 }
 630                 fclose($fp);
 631
 632                 $slug = '';
 633                 if ( isset( $_SERVER['HTTP_SLUG'] ) )
 634                         $slug = sanitize_file_name( $_SERVER['HTTP_SLUG'] );
 635                 elseif ( isset( $_SERVER['HTTP_TITLE'] ) )
 636                         $slug = sanitize_file_name( $_SERVER['HTTP_TITLE'] );
 637                 elseif ( empty( $slug ) ) // just make a random name
 638                         $slug = substr( md5( uniqid( microtime() ) ), 0, 7);
 639                 $ext = preg_replace( '|.*/([a-z0-9]+)|', '$1', $_SERVER['CONTENT_TYPE'] );
 640                 $slug = "$slug.$ext";
 641                 $file = wp_upload_bits( $slug, NULL, $bits);
 642
 643                 log_app('wp_upload_bits returns:',print_r($file,true));
 644
 645                 $url = $file['url'];
 646                 $file = $file['file'];
 647
 648                 do_action('wp_create_file_in_uploads', $file); // replicate
 649
 650                 // Construct the attachment array
 651                 $attachment = array(
 652                         'post_title' => $slug,
 653                         'post_content' => $slug,
 654                         'post_status' => 'attachment',
 655                         'post_parent' => 0,
 656                         'post_mime_type' => $type,
 657                         'guid' => $url
 658                         );
 659
 660                 // Save the data
 661                 $postID = wp_insert_attachment($attachment, $file);
 662
 663                 if (!$postID)
 664                         $this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
 665
 666                 $output = $this->get_entry($postID, 'attachment');
 667
 668                 $this->created($postID, $output, 'attachment');
 669                 log_app('function',"create_attachment($postID)");
 670         }
 671
 672         /**
 673          * Update attachment.
 674          *
 675          * @since 2.2.0
 676          *
 677          * @param int $postID Post ID.
 678          */
 679         function put_attachment($postID) {
 680                 // checked for valid content-types (atom+xml)
 681                 // quick check and exit
 682                 $this->get_accepted_content_type($this->atom_content_types);
 683
 684                 $parser = new AtomParser();
 685                 if(!$parser->parse()) {
 686                         $this->bad_request();
 687                 }
 688
 689                 $parsed = array_pop($parser->feed->entries);
 690
 691                 // check for not found
 692                 global $entry;
 693                 $this->set_current_entry($postID);
 694
 695                 if(!current_user_can('edit_post', $entry['ID']))
 696                         $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
 697
 698                 extract($entry);
 699
 700                 $post_title = $parsed->title[1];
 701                 $post_content = $parsed->content[1];
 702                 $pubtimes = $this->get_publish_time($parsed->updated);
 703                 $post_modified = $pubtimes[0];
 704                 $post_modified_gmt = $pubtimes[1];
 705
 706                 $postdata = compact('ID', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_modified', 'post_modified_gmt');
 707                 $this->escape($postdata);
 708
 709                 $result = wp_update_post($postdata);
 710
 711                 if (!$result) {
 712                         $this->internal_error(__('For some strange yet very annoying reason, this post could not be edited.'));
 713                 }
 714
 715                 log_app('function',"put_attachment($postID)");
 716                 $this->ok();
 717         }
 718
 719         /**
 720          * Remove attachment.
 721          *
 722          * @since 2.2.0
 723          *
 724          * @param int $postID Post ID.
 725          */
 726         function delete_attachment($postID) {
 727                 log_app('function',"delete_attachment($postID). File '$location' deleted.");
 728
 729                 // check for not found
 730                 global $entry;
 731                 $this->set_current_entry($postID);
 732
 733                 if(!current_user_can('edit_post', $postID)) {
 734                         $this->auth_required(__('Sorry, you do not have the right to delete this post.'));
 735                 }
 736
 737                 $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
 738                 $filetype = wp_check_filetype($location);
 739
 740                 if(!isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']))
 741                         $this->internal_error(__('Error ocurred while accessing post metadata for file location.'));
 742
 743                 // delete file
 744                 @unlink($location);
 745
 746                 // delete attachment
 747                 $result = wp_delete_post($postID);
 748
 749                 if (!$result) {
 750                         $this->internal_error(__('For some strange yet very annoying reason, this post could not be deleted.'));
 751                 }
 752
 753                 log_app('function',"delete_attachment($postID). File '$location' deleted.");
 754                 $this->ok();
 755         }
 756
 757         /**
 758          * Retrieve attachment from post.
 759          *
 760          * @since 2.2.0
 761          *
 762          * @param int $postID Post ID.
 763          */
 764         function get_file($postID) {
 765
 766                 // check for not found
 767                 global $entry;
 768                 $this->set_current_entry($postID);
 769
 770                 // then whether user can edit the specific post
 771                 if(!current_user_can('edit_post', $postID)) {
 772                         $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
 773                 }
 774
 775                 $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
 776                 $filetype = wp_check_filetype($location);
 777
 778                 if(!isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']))
 779                         $this->internal_error(__('Error ocurred while accessing post metadata for file location.'));
 780
 781                 status_header('200');
 782                 header('Content-Type: ' . $entry['post_mime_type']);
 783                 header('Connection: close');
 784
 785                 $fp = fopen($location, "rb");
 786                 while(!feof($fp)) {
 787                         echo fread($fp, 4096);
 788                 }
 789                 fclose($fp);
 790
 791                 log_app('function',"get_file($postID)");
 792                 exit;
 793         }
 794
 795         /**
 796          * Upload file to blog and add attachment to post.
 797          *
 798          * @since 2.2.0
 799          *
 800          * @param int $postID Post ID.
 801          */
 802         function put_file($postID) {
 803
 804                 // first check if user can upload
 805                 if(!current_user_can('upload_files'))
 806                         $this->auth_required(__('You do not have permission to upload files.'));
 807
 808                 // check for not found
 809                 global $entry;
 810                 $this->set_current_entry($postID);
 811
 812                 // then whether user can edit the specific post
 813                 if(!current_user_can('edit_post', $postID)) {
 814                         $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
 815                 }
 816
 817                 $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
 818                 $filetype = wp_check_filetype($location);
 819
 820                 if(!isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']))
 821                         $this->internal_error(__('Error ocurred while accessing post metadata for file location.'));
 822
 823                 $fp = fopen("php://input", "rb");
 824                 $localfp = fopen($location, "w+");
 825                 while(!feof($fp)) {
 826                         fwrite($localfp,fread($fp, 4096));
 827                 }
 828                 fclose($fp);
 829                 fclose($localfp);
 830
 831                 $ID = $entry['ID'];
 832                 $pubtimes = $this->get_publish_time($entry->published);
 833                 $post_date = $pubtimes[0];
 834                 $post_date_gmt = $pubtimes[1];
 835                 $pubtimes = $this->get_publish_time($parsed->updated);
 836                 $post_modified = $pubtimes[0];
 837                 $post_modified_gmt = $pubtimes[1];
 838
 839                 $post_data = compact('ID', 'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt');
 840                 $result = wp_update_post($post_data);
 841
 842                 if (!$result) {
 843                         $this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
 844                 }
 845
 846                 log_app('function',"put_file($postID)");
 847                 $this->ok();
 848         }
 849
 850         /**
 851          * Retrieve entries URL.
 852          *
 853          * @since 2.2.0
 854          *
 855          * @param int $page Page ID.
 856          * @return string
 857          */
 858         function get_entries_url($page = null) {
 859                 if($GLOBALS['post_type'] == 'attachment') {
 860                         $path = $this->MEDIA_PATH;
 861                 } else {
 862                         $path = $this->ENTRIES_PATH;
 863                 }
 864                 $url = $this->app_base . $path;
 865                 if(isset($page) && is_int($page)) {
 866                         $url .= "/$page";
 867                 }
 868                 return $url;
 869         }
 870
 871         /**
 872          * Display entries URL.
 873          *
 874          * @since 2.2.0
 875          *
 876          * @param int $page Page ID.
 877          */
 878         function the_entries_url($page = null) {
 879                 echo $this->get_entries_url($page);
 880         }
 881
 882         /**
 883          * Retrieve categories URL.
 884          *
 885          * @since 2.2.0
 886          *
 887          * @param mixed $deprecated Optional, not used.
 888          * @return string
 889          */
 890         function get_categories_url($deprecated = '') {
 891                 return $this->app_base . $this->CATEGORIES_PATH;
 892         }
 893
 894         /**
 895          * Display category URL.
 896          *
 897          * @since 2.2.0
 898          */
 899         function the_categories_url() {
 900                 echo $this->get_categories_url();
 901         }
 902
 903         /**
 904          * Retrieve attachment URL.
 905          *
 906          * @since 2.2.0
 907          *
 908          * @param int $page Page ID.
 909          * @return string
 910          */
 911         function get_attachments_url($page = null) {
 912                 $url = $this->app_base . $this->MEDIA_PATH;
 913                 if(isset($page) && is_int($page)) {
 914                         $url .= "/$page";
 915                 }
 916                 return $url;
 917         }
 918
 919         /**
 920          * Display attachment URL.
 921          *
 922          * @since 2.2.0
 923          *
 924          * @param int $page Page ID.
 925          */
 926         function the_attachments_url($page = null) {
 927                 echo $this->get_attachments_url($page);
 928         }
 929
 930         /**
 931          * Retrieve service URL.
 932          *
 933          * @since 2.3.0
 934          *
 935          * @return string
 936          */
 937         function get_service_url() {
 938                 return $this->app_base . $this->SERVICE_PATH;
 939         }
 940
 941         /**
 942          * Retrieve entry URL.
 943          *
 944          * @since 2.7.0
 945          *
 946          * @param int $postID Post ID.
 947          * @return string
 948          */
 949         function get_entry_url($postID = null) {
 950                 if(!isset($postID)) {
 951                         global $post;
 952                         $postID = (int) $post->ID;
 953                 }
 954
 955                 $url = $this->app_base . $this->ENTRY_PATH . "/$postID";
 956
 957                 log_app('function',"get_entry_url() = $url");
 958                 return $url;
 959         }
 960
 961         /**
 962          * Display entry URL.
 963          *
 964          * @since 2.7.0
 965          *
 966          * @param int $postID Post ID.
 967          */
 968         function the_entry_url($postID = null) {
 969                 echo $this->get_entry_url($postID);
 970         }
 971
 972         /**
 973          * Retrieve media URL.
 974          *
 975          * @since 2.2.0
 976          *
 977          * @param int $postID Post ID.
 978          * @return string
 979          */
 980         function get_media_url($postID = null) {
 981                 if(!isset($postID)) {
 982                         global $post;
 983                         $postID = (int) $post->ID;
 984                 }
 985
 986                 $url = $this->app_base . $this->MEDIA_SINGLE_PATH ."/file/$postID";
 987
 988                 log_app('function',"get_media_url() = $url");
 989                 return $url;
 990         }
 991
 992         /**
 993          * Display the media URL.
 994          *
 995          * @since 2.2.0
 996          *
 997          * @param int $postID Post ID.
 998          */
 999         function the_media_url($postID = null) {
1000                 echo $this->get_media_url($postID);
1001         }
1002
1003         /**
1004          * Set the current entry to post ID.
1005          *
1006          * @since 2.2.0
1007          *
1008          * @param int $postID Post ID.
1009          */
1010         function set_current_entry($postID) {
1011                 global $entry;
1012                 log_app('function',"set_current_entry($postID)");
1013
1014                 if(!isset($postID)) {
1015                         // $this->bad_request();
1016                         $this->not_found();
1017                 }
1018
1019                 $entry = wp_get_single_post($postID,ARRAY_A);
1020
1021                 if(!isset($entry) || !isset($entry['ID']))
1022                         $this->not_found();
1023
1024                 return;
1025         }
1026
1027         /**
1028          * Display posts XML.
1029          *
1030          * @since 2.2.0
1031          *
1032          * @param int $page Optional. Page ID.
1033          * @param string $post_type Optional, default is 'post'. Post Type.
1034          */
1035         function get_posts($page = 1, $post_type = 'post') {
1036                         log_app('function',"get_posts($page, '$post_type')");
1037                         $feed = $this->get_feed($page, $post_type);
1038                         $this->output($feed);
1039         }
1040
1041         /**
1042          * Display attachment XML.
1043          *
1044          * @since 2.2.0
1045          *
1046          * @param int $page Page ID.
1047          * @param string $post_type Optional, default is 'attachment'. Post type.
1048          */
1049         function get_attachments($page = 1, $post_type = 'attachment') {
1050                 log_app('function',"get_attachments($page, '$post_type')");
1051                 $GLOBALS['post_type'] = $post_type;
1052                 $feed = $this->get_feed($page, $post_type);
1053                 $this->output($feed);
1054         }
1055
1056         /**
1057          * Retrieve feed XML.
1058          *
1059          * @since 2.2.0
1060          *
1061          * @param int $page Page ID.
1062          * @param string $post_type Optional, default is post. Post type.
1063          * @return string
1064          */
1065         function get_feed($page = 1, $post_type = 'post') {
1066                 global $post, $wp, $wp_query, $posts, $wpdb, $blog_id;
1067                 log_app('function',"get_feed($page, '$post_type')");
1068                 ob_start();
1069
1070                 if(!isset($page)) {
1071                         $page = 1;
1072                 }
1073                 $page = (int) $page;
1074
1075                 $count = get_option('posts_per_rss');
1076
1077                 wp('what_to_show=posts&posts_per_page=' . $count . '&offset=' . ($count * ($page-1) . '&orderby=modified'));
1078
1079                 $post = $GLOBALS['post'];
1080                 $posts = $GLOBALS['posts'];
1081                 $wp = $GLOBALS['wp'];
1082                 $wp_query = $GLOBALS['wp_query'];
1083                 $wpdb = $GLOBALS['wpdb'];
1084                 $blog_id = (int) $GLOBALS['blog_id'];
1085                 log_app('function',"query_posts(# " . print_r($wp_query, true) . "#)");
1086
1087                 log_app('function',"total_count(# $wp_query->max_num_pages #)");
1088                 $last_page = $wp_query->max_num_pages;
1089                 $next_page = (($page + 1) > $last_page) ? NULL : $page + 1;
1090                 $prev_page = ($page - 1) < 1 ? NULL : $page - 1;
1091                 $last_page = ((int)$last_page == 1 || (int)$last_page == 0) ? NULL : (int) $last_page;
1092                 $self_page = $page > 1 ? $page : NULL;
1093 ?><feed xmlns="<?php echo $this->ATOM_NS ?>" xmlns:app="<?php echo $this->ATOMPUB_NS ?>" xml:lang="<?php echo get_option('rss_language'); ?>">
1094 <id><?php $this->the_entries_url() ?></id>
1095 <updated><?php echo mysql2date('Y-m-d\TH:i:s\Z', get_lastpostmodified('GMT')); ?></updated>
1096 <title type="text"><?php bloginfo_rss('name') ?></title>
1097 <subtitle type="text"><?php bloginfo_rss("description") ?></subtitle>
1098 <link rel="first" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url() ?>" />
1099 <?php if(isset($prev_page)): ?>
1100 <link rel="previous" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($prev_page) ?>" />
1101 <?php endif; ?>
1102 <?php if(isset($next_page)): ?>
1103 <link rel="next" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($next_page) ?>" />
1104 <?php endif; ?>
1105 <link rel="last" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($last_page) ?>" />
1106 <link rel="self" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($self_page) ?>" />
1107 <rights type="text">Copyright <?php echo mysql2date('Y', get_lastpostdate('blog')); ?></rights>
1108 <?php the_generator( 'atom' ); ?>
1109 <?php if ( have_posts() ) {
1110                         while ( have_posts() ) {
1111                                 the_post();
1112                                 $this->echo_entry();
1113                         }
1114                 }
1115 ?></feed>
1116 <?php
1117                 $feed = ob_get_contents();
1118                 ob_end_clean();
1119                 return $feed;
1120         }
1121
1122         /**
1123          * Display entry XML.
1124          *
1125          * @since 2.2.0
1126          *
1127          * @param int $postID Post ID.
1128          * @param string $post_type Optional, default is post. Post type.
1129          * @return string.
1130          */
1131         function get_entry($postID, $post_type = 'post') {
1132                 log_app('function',"get_entry($postID, '$post_type')");
1133                 ob_start();
1134                 switch($post_type) {
1135                         case 'post':
1136                                 $varname = 'p';
1137                                 break;
1138                         case 'attachment':
1139                                 $varname = 'attachment_id';
1140                                 break;
1141                 }
1142                 query_posts($varname . '=' . $postID);
1143                 if ( have_posts() ) {
1144                         while ( have_posts() ) {
1145                                 the_post();
1146                                 $this->echo_entry();
1147                                 log_app('$post',print_r($GLOBALS['post'],true));
1148                                 $entry = ob_get_contents();
1149                                 break;
1150                         }
1151                 }
1152                 ob_end_clean();
1153
1154                 log_app('get_entry returning:',$entry);
1155                 return $entry;
1156         }
1157
1158         /**
1159          * Display post content XML.
1160          *
1161          * @since 2.3.0
1162          */
1163         function echo_entry() { ?>
1164 <entry xmlns="<?php echo $this->ATOM_NS ?>"
1165        xmlns:app="<?php echo $this->ATOMPUB_NS ?>" xml:lang="<?php echo get_option('rss_language'); ?>">
1166         <id><?php the_guid($GLOBALS['post']->ID); ?></id>
1167 <?php list($content_type, $content) = prep_atom_text_construct(get_the_title()); ?>
1168         <title type="<?php echo $content_type ?>"><?php echo $content ?></title>
1169         <updated><?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?></updated>
1170         <published><?php echo get_post_time('Y-m-d\TH:i:s\Z', true); ?></published>
1171         <app:edited><?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?></app:edited>
1172         <app:control>
1173                 <app:draft><?php echo ($GLOBALS['post']->post_status == 'draft' ? 'yes' : 'no') ?></app:draft>
1174         </app:control>
1175         <author>
1176                 <name><?php the_author()?></name>
1177 <?php if (get_the_author_url() && get_the_author_url() != 'http://') { ?>
1178                 <uri><?php the_author_url()?></uri>
1179 <?php } ?>
1180         </author>
1181 <?php if($GLOBALS['post']->post_type == 'attachment') { ?>
1182         <link rel="edit-media" href="<?php $this->the_media_url() ?>" />
1183         <content type="<?php echo $GLOBALS['post']->post_mime_type ?>" src="<?php the_guid(); ?>"/>
1184 <?php } else { ?>
1185         <link href="<?php the_permalink_rss() ?>" />
1186 <?php if ( strlen( $GLOBALS['post']->post_content ) ) :
1187 list($content_type, $content) = prep_atom_text_construct(get_the_content()); ?>
1188         <content type="<?php echo $content_type ?>"><?php echo $content ?></content>
1189 <?php endif; ?>
1190 <?php } ?>
1191         <link rel="edit" href="<?php $this->the_entry_url() ?>" />
1192 <?php foreach(get_the_category() as $category) { ?>
1193         <category scheme="<?php bloginfo_rss('home') ?>" term="<?php echo $category->name?>" />
1194 <?php } ?>
1195 <?php list($content_type, $content) = prep_atom_text_construct(get_the_excerpt()); ?>
1196         <summary type="<?php echo $content_type ?>"><?php echo $content ?></summary>
1197 </entry>
1198 <?php }
1199
1200         /**
1201          * Set 'OK' (200) status header.
1202          *
1203          * @since 2.2.0
1204          */
1205         function ok() {
1206                 log_app('Status','200: OK');
1207                 header('Content-Type: text/plain');
1208                 status_header('200');
1209                 exit;
1210         }
1211
1212         /**
1213          * Set 'No Content' (204) status header.
1214          *
1215          * @since 2.2.0
1216          */
1217         function no_content() {
1218                 log_app('Status','204: No Content');
1219                 header('Content-Type: text/plain');
1220                 status_header('204');
1221                 echo "Deleted.";
1222                 exit;
1223         }
1224
1225         /**
1226          * Display 'Internal Server Error' (500) status header.
1227          *
1228          * @since 2.2.0
1229          *
1230          * @param string $msg Optional. Status string.
1231          */
1232         function internal_error($msg = 'Internal Server Error') {
1233                 log_app('Status','500: Server Error');
1234                 header('Content-Type: text/plain');
1235                 status_header('500');
1236                 echo $msg;
1237                 exit;
1238         }
1239
1240         /**
1241          * Set 'Bad Request' (400) status header.
1242          *
1243          * @since 2.2.0
1244          */
1245         function bad_request() {
1246                 log_app('Status','400: Bad Request');
1247                 header('Content-Type: text/plain');
1248                 status_header('400');
1249                 exit;
1250         }
1251
1252         /**
1253          * Set 'Length Required' (411) status header.
1254          *
1255          * @since 2.2.0
1256          */
1257         function length_required() {
1258                 log_app('Status','411: Length Required');
1259                 header("HTTP/1.1 411 Length Required");
1260                 header('Content-Type: text/plain');
1261                 status_header('411');
1262                 exit;
1263         }
1264
1265         /**
1266          * Set 'Unsupported Media Type' (415) status header.
1267          *
1268          * @since 2.2.0
1269          */
1270         function invalid_media() {
1271                 log_app('Status','415: Unsupported Media Type');
1272                 header("HTTP/1.1 415 Unsupported Media Type");
1273                 header('Content-Type: text/plain');
1274                 exit;
1275         }
1276
1277         /**
1278          * Set 'Forbidden' (403) status header.
1279          *
1280          * @since 2.6.0
1281          */
1282         function forbidden($reason='') {
1283                 log_app('Status','403: Forbidden');
1284                 header('Content-Type: text/plain');
1285                 status_header('403');
1286                 echo $reason;
1287                 exit;
1288         }
1289
1290         /**
1291          * Set 'Not Found' (404) status header.
1292          *
1293          * @since 2.2.0
1294          */
1295         function not_found() {
1296                 log_app('Status','404: Not Found');
1297                 header('Content-Type: text/plain');
1298                 status_header('404');
1299                 exit;
1300         }
1301
1302         /**
1303          * Set 'Not Allowed' (405) status header.
1304          *
1305          * @since 2.2.0
1306          */
1307         function not_allowed($allow) {
1308                 log_app('Status','405: Not Allowed');
1309                 header('Allow: ' . join(',', $allow));
1310                 status_header('405');
1311                 exit;
1312         }
1313
1314         /**
1315          * Display Redirect (302) content and set status headers.
1316          *
1317          * @since 2.3.0
1318          */
1319         function redirect($url) {
1320
1321                 log_app('Status','302: Redirect');
1322                 $escaped_url = attribute_escape($url);
1323                 $content = <<<EOD
1324 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
1325 <html>
1326   <head>
1327     <title>302 Found</title>
1328   </head>
1329 <body>
1330   <h1>Found</h1>
1331   <p>The document has moved <a href="$escaped_url">here</a>.</p>
1332   </body>
1333 </html>
1334
1335 EOD;
1336                 header('HTTP/1.1 302 Moved');
1337                 header('Content-Type: text/html');
1338                 header('Location: ' . $url);
1339                 echo $content;
1340                 exit;
1341
1342         }
1343
1344         /**
1345          * Set 'Client Error' (400) status header.
1346          *
1347          * @since 2.2.0
1348          */
1349         function client_error($msg = 'Client Error') {
1350                 log_app('Status','400: Client Error');
1351                 header('Content-Type: text/plain');
1352                 status_header('400');
1353                 exit;
1354         }
1355
1356         /**
1357          * Set created status headers (201).
1358          *
1359          * Sets the 'content-type', 'content-location', and 'location'.
1360          *
1361          * @since 2.2.0
1362          */
1363         function created($post_ID, $content, $post_type = 'post') {
1364                 log_app('created()::$post_ID',"$post_ID, $post_type");
1365                 $edit = $this->get_entry_url($post_ID);
1366                 switch($post_type) {
1367                         case 'post':
1368                                 $ctloc = $this->get_entry_url($post_ID);
1369                                 break;
1370                         case 'attachment':
1371                                 $edit = $this->app_base . "attachments/$post_ID";
1372                                 break;
1373                 }
1374                 header("Content-Type: $this->ATOM_CONTENT_TYPE");
1375                 if(isset($ctloc))
1376                         header('Content-Location: ' . $ctloc);
1377                 header('Location: ' . $edit);
1378                 status_header('201');
1379                 echo $content;
1380                 exit;
1381         }
1382
1383         /**
1384          * Set 'Auth Required' (401) headers.
1385          *
1386          * @since 2.2.0
1387          *
1388          * @param string $msg Status header content and HTML content.
1389          */
1390         function auth_required($msg) {
1391                 log_app('Status','401: Auth Required');
1392                 nocache_headers();
1393                 header('WWW-Authenticate: Basic realm="WordPress Atom Protocol"');
1394                 header("HTTP/1.1 401 $msg");
1395                 header('Status: 401 ' . $msg);
1396                 header('Content-Type: text/html');
1397                 $content = <<<EOD
1398 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
1399 <html>
1400   <head>
1401     <title>401 Unauthorized</title>
1402   </head>
1403 <body>
1404     <h1>401 Unauthorized</h1>
1405     <p>$msg</p>
1406   </body>
1407 </html>
1408
1409 EOD;
1410                 echo $content;
1411                 exit;
1412         }
1413
1414         /**
1415          * Display XML and set headers with content type.
1416          *
1417          * @since 2.2.0
1418          *
1419          * @param string $xml Display feed content.
1420          * @param string $ctype Optional, default is 'atom+xml'. Feed content type.
1421          */
1422         function output($xml, $ctype = 'application/atom+xml') {
1423                         status_header('200');
1424                         $xml = '<?xml version="1.0" encoding="' . strtolower(get_option('blog_charset')) . '"?>'."\n".$xml;
1425                         header('Connection: close');
1426                         header('Content-Length: '. strlen($xml));
1427                         header('Content-Type: ' . $ctype);
1428                         header('Content-Disposition: attachment; filename=atom.xml');
1429                         header('Date: '. date('r'));
1430                         if($this->do_output)
1431                                 echo $xml;
1432                         log_app('function', "output:\n$xml");
1433                         exit;
1434         }
1435
1436         /**
1437          * Sanitize content for database usage.
1438          *
1439          * @since 2.2.0
1440          *
1441          * @param array $array Sanitize array and multi-dimension array.
1442          */
1443         function escape(&$array) {
1444                 global $wpdb;
1445
1446                 foreach ($array as $k => $v) {
1447                                 if (is_array($v)) {
1448                                                 $this->escape($array[$k]);
1449                                 } else if (is_object($v)) {
1450                                                 //skip
1451                                 } else {
1452                                                 $array[$k] = $wpdb->escape($v);
1453                                 }
1454                 }
1455         }
1456
1457         /**
1458          * Access credential through various methods and perform login.
1459          *
1460          * @since 2.2.0
1461          *
1462          * @return bool
1463          */
1464         function authenticate() {
1465                 log_app("authenticate()",print_r($_ENV, true));
1466
1467                 // if using mod_rewrite/ENV hack
1468                 // http://www.besthostratings.com/articles/http-auth-php-cgi.html
1469                 if(isset($_SERVER['HTTP_AUTHORIZATION'])) {
1470                         list($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']) =
1471                                 explode(':', base64_decode(substr($_SERVER['HTTP_AUTHORIZATION'], 6)));
1472                 } else if (isset($_SERVER['REDIRECT_REMOTE_USER'])) {
1473                         // Workaround for setups that do not forward HTTP_AUTHORIZATION
1474                         // See http://trac.wordpress.org/ticket/7361
1475                         list($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']) =
1476                                 explode(':', base64_decode(substr($_SERVER['REDIRECT_REMOTE_USER'], 6)));
1477                 }
1478
1479                 // If Basic Auth is working...
1480                 if(isset($_SERVER['PHP_AUTH_USER']) && isset($_SERVER['PHP_AUTH_PW'])) {
1481                         log_app("Basic Auth",$_SERVER['PHP_AUTH_USER']);
1482                         $user = wp_authenticate($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']);
1483                         if ( $user && !is_wp_error($user) ) {
1484                                 wp_set_current_user($user->ID);
1485                                 log_app("authenticate()", $_SERVER['PHP_AUTH_USER']);
1486                                 return true;
1487                         }
1488                 }
1489
1490                 return false;
1491         }
1492
1493         /**
1494          * Retrieve accepted content types.
1495          *
1496          * @since 2.2.0
1497          *
1498          * @param array $types Optional. Content Types.
1499          * @return string
1500          */
1501         function get_accepted_content_type($types = null) {
1502
1503                 if(!isset($types)) {
1504                         $types = $this->media_content_types;
1505                 }
1506
1507                 if(!isset($_SERVER['CONTENT_LENGTH']) || !isset($_SERVER['CONTENT_TYPE'])) {
1508                         $this->length_required();
1509                 }
1510
1511                 $type = $_SERVER['CONTENT_TYPE'];
1512                 list($type,$subtype) = explode('/',$type);
1513                 list($subtype) = explode(";",$subtype); // strip MIME parameters
1514                 log_app("get_accepted_content_type", "type=$type, subtype=$subtype");
1515
1516                 foreach($types as $t) {
1517                         list($acceptedType,$acceptedSubtype) = explode('/',$t);
1518                         if($acceptedType == '*' || $acceptedType == $type) {
1519                                 if($acceptedSubtype == '*' || $acceptedSubtype == $subtype)
1520                                         return $type . "/" . $subtype;
1521                         }
1522                 }
1523
1524                 $this->invalid_media();
1525         }
1526
1527         /**
1528          * Process conditionals for posts.
1529          *
1530          * @since 2.2.0
1531          */
1532         function process_conditionals() {
1533
1534                 if(empty($this->params)) return;
1535                 if($_SERVER['REQUEST_METHOD'] == 'DELETE') return;
1536
1537                 switch($this->params[0]) {
1538                         case $this->ENTRY_PATH:
1539                                 global $post;
1540                                 $post = wp_get_single_post($this->params[1]);
1541                                 $wp_last_modified = get_post_modified_time('D, d M Y H:i:s', true);
1542                                 $post = NULL;
1543                                 break;
1544                         case $this->ENTRIES_PATH:
1545                                 $wp_last_modified = mysql2date('D, d M Y H:i:s', get_lastpostmodified('GMT'), 0).' GMT';
1546                                 break;
1547                         default:
1548                                 return;
1549                 }
1550                 $wp_etag = md5($wp_last_modified);
1551                 @header("Last-Modified: $wp_last_modified");
1552                 @header("ETag: $wp_etag");
1553
1554                 // Support for Conditional GET
1555                 if (isset($_SERVER['HTTP_IF_NONE_MATCH']))
1556                         $client_etag = stripslashes($_SERVER['HTTP_IF_NONE_MATCH']);
1557                 else
1558                         $client_etag = false;
1559
1560                 $client_last_modified = trim( $_SERVER['HTTP_IF_MODIFIED_SINCE']);
1561                 // If string is empty, return 0. If not, attempt to parse into a timestamp
1562                 $client_modified_timestamp = $client_last_modified ? strtotime($client_last_modified) : 0;
1563
1564                 // Make a timestamp for our most recent modification...
1565                 $wp_modified_timestamp = strtotime($wp_last_modified);
1566
1567                 if ( ($client_last_modified && $client_etag) ?
1568                 (($client_modified_timestamp >= $wp_modified_timestamp) && ($client_etag == $wp_etag)) :
1569                 (($client_modified_timestamp >= $wp_modified_timestamp) || ($client_etag == $wp_etag)) ) {
1570                         status_header( 304 );
1571                         exit;
1572                 }
1573         }
1574
1575         /**
1576          * Convert RFC3339 time string to timestamp.
1577          *
1578          * @since 2.3.0
1579          *
1580          * @param string $str String to time.
1581          * @return bool|int false if format is incorrect.
1582          */
1583         function rfc3339_str2time($str) {
1584
1585                 $match = false;
1586                 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, $match))
1587                         return false;
1588
1589                 if($match[3] == 'Z')
1590                         $match[3] == '+0000';
1591
1592                 return strtotime($match[1] . " " . $match[2] . " " . $match[3]);
1593         }
1594
1595         /**
1596          * Retrieve published time to display in XML.
1597          *
1598          * @since 2.3.0
1599          *
1600          * @param string $published Time string.
1601          * @return string
1602          */
1603         function get_publish_time($published) {
1604
1605                 $pubtime = $this->rfc3339_str2time($published);
1606
1607                 if(!$pubtime) {
1608                         return array(current_time('mysql'),current_time('mysql',1));
1609                 } else {
1610                         return array(date("Y-m-d H:i:s", $pubtime), gmdate("Y-m-d H:i:s", $pubtime));
1611                 }
1612         }
1613
1614 }
1615
1616 /**
1617  * AtomServer
1618  * @var AtomServer
1619  * @global object $server
1620  */
1621 $server = new AtomServer();
1622 $server->handle_request();
1623
1624 ?>