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          * PHP4 constructor - Sets up object properties.
 220          *
 221          * @since 2.2.0
 222          * @return AtomServer
 223          */
 224         function AtomServer() {
 225
 226                 $this->script_name = array_pop(explode('/',$_SERVER['SCRIPT_NAME']));
 227                 $this->app_base = site_url( $this->script_name . '/' );
 228
 229                 $this->selectors = array(
 230                         '@/service$@' =>
 231                                 array('GET' => 'get_service'),
 232                         '@/categories$@' =>
 233                                 array('GET' => 'get_categories_xml'),
 234                         '@/post/(\d+)$@' =>
 235                                 array('GET' => 'get_post',
 236                                                 'PUT' => 'put_post',
 237                                                 'DELETE' => 'delete_post'),
 238                         '@/posts/?(\d+)?$@' =>
 239                                 array('GET' => 'get_posts',
 240                                                 'POST' => 'create_post'),
 241                         '@/attachments/?(\d+)?$@' =>
 242                                 array('GET' => 'get_attachment',
 243                                                 'POST' => 'create_attachment'),
 244                         '@/attachment/file/(\d+)$@' =>
 245                                 array('GET' => 'get_file',
 246                                                 'PUT' => 'put_file',
 247                                                 'DELETE' => 'delete_file'),
 248                         '@/attachment/(\d+)$@' =>
 249                                 array('GET' => 'get_attachment',
 250                                                 'PUT' => 'put_attachment',
 251                                                 'DELETE' => 'delete_attachment'),
 252                 );
 253         }
 254
 255         /**
 256          * Handle ATOMPUB request.
 257          *
 258          * @since 2.2.0
 259          */
 260         function handle_request() {
 261                 global $always_authenticate;
 262
 263                 if ( !empty( $_SERVER['ORIG_PATH_INFO'] ) )
 264                         $path = $_SERVER['ORIG_PATH_INFO'];
 265                 else
 266                         $path = $_SERVER['PATH_INFO'];
 267
 268                 $method = $_SERVER['REQUEST_METHOD'];
 269
 270                 log_app('REQUEST',"$method $path\n================");
 271
 272                 $this->process_conditionals();
 273                 //$this->process_conditionals();
 274
 275                 // exception case for HEAD (treat exactly as GET, but don't output)
 276                 if ($method == 'HEAD') {
 277                         $this->do_output = false;
 278                         $method = 'GET';
 279                 }
 280
 281                 // redirect to /service in case no path is found.
 282                 if (strlen($path) == 0 || $path == '/')
 283                         $this->redirect($this->get_service_url());
 284
 285                 // check to see if AtomPub is enabled
 286                 if ( !get_option( 'enable_app' ) )
 287                         $this->forbidden( sprintf( __( 'AtomPub services are disabled on this site.  An admin user can enable them at %s' ), admin_url('options-writing.php') ) );
 288
 289                 // dispatch
 290                 foreach ( $this->selectors as $regex => $funcs ) {
 291                         if ( preg_match($regex, $path, $matches) ) {
 292                                 if ( isset($funcs[$method]) ) {
 293
 294                                         // authenticate regardless of the operation and set the current
 295                                         // user. each handler will decide if auth is required or not.
 296                                         if ( !$this->authenticate() ) {
 297                                                 if ( $always_authenticate )
 298                                                         $this->auth_required('Credentials required.');
 299                                         }
 300
 301                                         array_shift($matches);
 302                                         call_user_func_array(array(&$this,$funcs[$method]), $matches);
 303                                         exit();
 304                                 } else {
 305                                         // only allow what we have handlers for...
 306                                         $this->not_allowed(array_keys($funcs));
 307                                 }
 308                         }
 309                 }
 310
 311                 // oops, nothing found
 312                 $this->not_found();
 313         }
 314
 315         /**
 316          * Retrieve XML for ATOMPUB service.
 317          *
 318          * @since 2.2.0
 319          */
 320         function get_service() {
 321                 log_app('function','get_service()');
 322
 323                 if ( !current_user_can( 'edit_posts' ) )
 324                         $this->auth_required( __( 'Sorry, you do not have the right to access this site.' ) );
 325
 326                 $entries_url = esc_attr($this->get_entries_url());
 327                 $categories_url = esc_attr($this->get_categories_url());
 328                 $media_url = esc_attr($this->get_attachments_url());
 329                 $accepted_media_types = '';
 330                 foreach ($this->media_content_types as $med) {
 331                         $accepted_media_types = $accepted_media_types . "<accept>" . $med . "</accept>";
 332                 }
 333                 $atom_prefix="atom";
 334                 $atom_blogname = get_bloginfo('name');
 335                 $service_doc = <<<EOD
 336 <service xmlns="$this->ATOMPUB_NS" xmlns:$atom_prefix="$this->ATOM_NS">
 337   <workspace>
 338     <$atom_prefix:title>$atom_blogname Workspace</$atom_prefix:title>
 339     <collection href="$entries_url">
 340       <$atom_prefix:title>$atom_blogname Posts</$atom_prefix:title>
 341       <accept>$this->ATOM_CONTENT_TYPE;type=entry</accept>
 342       <categories href="$categories_url" />
 343     </collection>
 344     <collection href="$media_url">
 345       <$atom_prefix:title>$atom_blogname Media</$atom_prefix:title>
 346       $accepted_media_types
 347     </collection>
 348   </workspace>
 349 </service>
 350
 351 EOD;
 352
 353                 $this->output($service_doc, $this->SERVICE_CONTENT_TYPE);
 354         }
 355
 356         /**
 357          * Retrieve categories list in XML format.
 358          *
 359          * @since 2.2.0
 360          */
 361         function get_categories_xml() {
 362                 log_app('function','get_categories_xml()');
 363
 364                 if ( !current_user_can( 'edit_posts' ) )
 365                         $this->auth_required( __( 'Sorry, you do not have the right to access this site.' ) );
 366
 367                 $home = esc_attr(get_bloginfo_rss('url'));
 368
 369                 $categories = "";
 370                 $cats = get_categories(array('hierarchical' => 0, 'hide_empty' => 0));
 371                 foreach ( (array) $cats as $cat ) {
 372                         $categories .= "    <category term=\"" . esc_attr($cat->name) .  "\" />\n";
 373                 }
 374                 $output = <<<EOD
 375 <app:categories xmlns:app="$this->ATOMPUB_NS"
 376         xmlns="$this->ATOM_NS"
 377         fixed="yes" scheme="$home">
 378         $categories
 379 </app:categories>
 380 EOD;
 381                 $this->output($output, $this->CATEGORIES_CONTENT_TYPE);
 382         }
 383
 384         /**
 385          * Create new post.
 386          *
 387          * @since 2.2.0
 388          */
 389         function create_post() {
 390                 global $blog_id, $user_ID;
 391                 $this->get_accepted_content_type($this->atom_content_types);
 392
 393                 $parser = new AtomParser();
 394                 if ( !$parser->parse() )
 395                         $this->client_error();
 396
 397                 $entry = array_pop($parser->feed->entries);
 398
 399                 log_app('Received entry:', print_r($entry,true));
 400
 401                 $catnames = array();
 402                 foreach ( $entry->categories as $cat ) {
 403                         array_push($catnames, $cat["term"]);
 404                 }
 405
 406                 $wp_cats = get_categories(array('hide_empty' => false));
 407
 408                 $post_category = array();
 409
 410                 foreach ( $wp_cats as $cat ) {
 411                         if ( in_array($cat->name, $catnames) )
 412                                 array_push($post_category, $cat->term_id);
 413                 }
 414
 415                 $publish = ! ( isset( $entry->draft ) && 'yes' == trim( $entry->draft ) );
 416
 417                 $cap = ($publish) ? 'publish_posts' : 'edit_posts';
 418
 419                 if ( !current_user_can($cap) )
 420                         $this->auth_required(__('Sorry, you do not have the right to edit/publish new posts.'));
 421
 422                 $blog_ID = (int ) $blog_id;
 423                 $post_status = ($publish) ? 'publish' : 'draft';
 424                 $post_author = (int) $user_ID;
 425                 $post_title = $entry->title[1];
 426                 $post_content = $entry->content[1];
 427                 $post_excerpt = $entry->summary[1];
 428                 $pubtimes = $this->get_publish_time($entry->published);
 429                 $post_date = $pubtimes[0];
 430                 $post_date_gmt = $pubtimes[1];
 431
 432                 if ( isset( $_SERVER['HTTP_SLUG'] ) )
 433                         $post_name = $_SERVER['HTTP_SLUG'];
 434
 435                 $post_data = compact('blog_ID', 'post_author', 'post_date', 'post_date_gmt', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_name');
 436
 437                 $this->escape($post_data);
 438                 log_app('Inserting Post. Data:', print_r($post_data,true));
 439
 440                 $postID = wp_insert_post($post_data);
 441                 if ( is_wp_error( $postID ) )
 442                         $this->internal_error($postID->get_error_message());
 443
 444                 if ( !$postID )
 445                         $this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
 446
 447                 // getting warning here about unable to set headers
 448                 // because something in the cache is printing to the buffer
 449                 // could we clean up wp_set_post_categories or cache to not print
 450                 // this could affect our ability to send back the right headers
 451                 @wp_set_post_categories($postID, $post_category);
 452
 453                 do_action( 'atompub_create_post', $postID, $entry );
 454
 455                 $output = $this->get_entry($postID);
 456
 457                 log_app('function',"create_post($postID)");
 458                 $this->created($postID, $output);
 459         }
 460
 461         /**
 462          * Retrieve post.
 463          *
 464          * @since 2.2.0
 465          *
 466          * @param int $postID Post ID.
 467          */
 468         function get_post($postID) {
 469                 global $entry;
 470
 471                 if ( !current_user_can( 'edit_post', $postID ) )
 472                         $this->auth_required( __( 'Sorry, you do not have the right to access this post.' ) );
 473
 474                 $this->set_current_entry($postID);
 475                 $output = $this->get_entry($postID);
 476                 log_app('function',"get_post($postID)");
 477                 $this->output($output);
 478
 479         }
 480
 481         /**
 482          * Update post.
 483          *
 484          * @since 2.2.0
 485          *
 486          * @param int $postID Post ID.
 487          */
 488         function put_post($postID) {
 489                 // checked for valid content-types (atom+xml)
 490                 // quick check and exit
 491                 $this->get_accepted_content_type($this->atom_content_types);
 492
 493                 $parser = new AtomParser();
 494                 if ( !$parser->parse() )
 495                         $this->bad_request();
 496
 497                 $parsed = array_pop($parser->feed->entries);
 498
 499                 log_app('Received UPDATED entry:', print_r($parsed,true));
 500
 501                 // check for not found
 502                 global $entry;
 503                 $this->set_current_entry($postID);
 504
 505                 if ( !current_user_can('edit_post', $entry['ID']) )
 506                         $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
 507
 508                 $publish = ! ( isset($parsed->draft) && 'yes' == trim($parsed->draft) );
 509                 $post_status = ($publish) ? 'publish' : 'draft';
 510
 511                 extract($entry);
 512
 513                 $post_title = $parsed->title[1];
 514                 $post_content = $parsed->content[1];
 515                 $post_excerpt = $parsed->summary[1];
 516                 $pubtimes = $this->get_publish_time($entry->published);
 517                 $post_date = $pubtimes[0];
 518                 $post_date_gmt = $pubtimes[1];
 519                 $pubtimes = $this->get_publish_time($parsed->updated);
 520                 $post_modified = $pubtimes[0];
 521                 $post_modified_gmt = $pubtimes[1];
 522
 523                 $postdata = compact('ID', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt');
 524                 $this->escape($postdata);
 525
 526                 $result = wp_update_post($postdata);
 527
 528                 if ( !$result )
 529                         $this->internal_error(__('For some strange yet very annoying reason, this post could not be edited.'));
 530
 531                 do_action( 'atompub_put_post', $ID, $parsed );
 532
 533                 log_app('function',"put_post($postID)");
 534                 $this->ok();
 535         }
 536
 537         /**
 538          * Remove post.
 539          *
 540          * @since 2.2.0
 541          *
 542          * @param int $postID Post ID.
 543          */
 544         function delete_post($postID) {
 545
 546                 // check for not found
 547                 global $entry;
 548                 $this->set_current_entry($postID);
 549
 550                 if ( !current_user_can('edit_post', $postID) )
 551                         $this->auth_required(__('Sorry, you do not have the right to delete this post.'));
 552
 553                 if ( $entry['post_type'] == 'attachment' ) {
 554                         $this->delete_attachment($postID);
 555                 } else {
 556                         $result = wp_delete_post($postID);
 557
 558                         if ( !$result ) {
 559                                 $this->internal_error(__('For some strange yet very annoying reason, this post could not be deleted.'));
 560                         }
 561
 562                         log_app('function',"delete_post($postID)");
 563                         $this->ok();
 564                 }
 565
 566         }
 567
 568         /**
 569          * Retrieve attachment.
 570          *
 571          * @since 2.2.0
 572          *
 573          * @param int $postID Optional. Post ID.
 574          */
 575         function get_attachment($postID = null) {
 576                 if ( !current_user_can( 'upload_files' ) )
 577                         $this->auth_required( __( 'Sorry, you do not have permission to upload files.' ) );
 578
 579                 if ( !isset($postID) ) {
 580                         $this->get_attachments();
 581                 } else {
 582                         $this->set_current_entry($postID);
 583                         $output = $this->get_entry($postID, 'attachment');
 584                         log_app('function',"get_attachment($postID)");
 585                         $this->output($output);
 586                 }
 587         }
 588
 589         /**
 590          * Create new attachment.
 591          *
 592          * @since 2.2.0
 593          */
 594         function create_attachment() {
 595
 596                 $type = $this->get_accepted_content_type();
 597
 598                 if ( !current_user_can('upload_files') )
 599                         $this->auth_required(__('You do not have permission to upload files.'));
 600
 601                 $fp = fopen("php://input", "rb");
 602                 $bits = null;
 603                 while ( !feof($fp) ) {
 604                         $bits .= fread($fp, 4096);
 605                 }
 606                 fclose($fp);
 607
 608                 $slug = '';
 609                 if ( isset( $_SERVER['HTTP_SLUG'] ) )
 610                         $slug = sanitize_file_name( $_SERVER['HTTP_SLUG'] );
 611                 elseif ( isset( $_SERVER['HTTP_TITLE'] ) )
 612                         $slug = sanitize_file_name( $_SERVER['HTTP_TITLE'] );
 613                 elseif ( empty( $slug ) ) // just make a random name
 614                         $slug = substr( md5( uniqid( microtime() ) ), 0, 7);
 615                 $ext = preg_replace( '|.*/([a-z0-9]+)|', '$1', $_SERVER['CONTENT_TYPE'] );
 616                 $slug = "$slug.$ext";
 617                 $file = wp_upload_bits( $slug, NULL, $bits);
 618
 619                 log_app('wp_upload_bits returns:',print_r($file,true));
 620
 621                 $url = $file['url'];
 622                 $file = $file['file'];
 623
 624                 do_action('wp_create_file_in_uploads', $file); // replicate
 625
 626                 // Construct the attachment array
 627                 $attachment = array(
 628                         'post_title' => $slug,
 629                         'post_content' => $slug,
 630                         'post_status' => 'attachment',
 631                         'post_parent' => 0,
 632                         'post_mime_type' => $type,
 633                         'guid' => $url
 634                         );
 635
 636                 // Save the data
 637                 $postID = wp_insert_attachment($attachment, $file);
 638
 639                 if (!$postID)
 640                         $this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
 641
 642                 $output = $this->get_entry($postID, 'attachment');
 643
 644                 $this->created($postID, $output, 'attachment');
 645                 log_app('function',"create_attachment($postID)");
 646         }
 647
 648         /**
 649          * Update attachment.
 650          *
 651          * @since 2.2.0
 652          *
 653          * @param int $postID Post ID.
 654          */
 655         function put_attachment($postID) {
 656                 // checked for valid content-types (atom+xml)
 657                 // quick check and exit
 658                 $this->get_accepted_content_type($this->atom_content_types);
 659
 660                 $parser = new AtomParser();
 661                 if (!$parser->parse()) {
 662                         $this->bad_request();
 663                 }
 664
 665                 $parsed = array_pop($parser->feed->entries);
 666
 667                 // check for not found
 668                 global $entry;
 669                 $this->set_current_entry($postID);
 670
 671                 if ( !current_user_can('edit_post', $entry['ID']) )
 672                         $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
 673
 674                 extract($entry);
 675
 676                 $post_title = $parsed->title[1];
 677                 $post_content = $parsed->summary[1];
 678                 $pubtimes = $this->get_publish_time($parsed->updated);
 679                 $post_modified = $pubtimes[0];
 680                 $post_modified_gmt = $pubtimes[1];
 681
 682                 $postdata = compact('ID', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_modified', 'post_modified_gmt');
 683                 $this->escape($postdata);
 684
 685                 $result = wp_update_post($postdata);
 686
 687                 if ( !$result )
 688                         $this->internal_error(__('For some strange yet very annoying reason, this post could not be edited.'));
 689
 690                 log_app('function',"put_attachment($postID)");
 691                 $this->ok();
 692         }
 693
 694         /**
 695          * Remove attachment.
 696          *
 697          * @since 2.2.0
 698          *
 699          * @param int $postID Post ID.
 700          */
 701         function delete_attachment($postID) {
 702                 log_app('function',"delete_attachment($postID). File '$location' deleted.");
 703
 704                 // check for not found
 705                 global $entry;
 706                 $this->set_current_entry($postID);
 707
 708                 if ( !current_user_can('edit_post', $postID) )
 709                         $this->auth_required(__('Sorry, you do not have the right to delete this post.'));
 710
 711                 $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
 712                 $filetype = wp_check_filetype($location);
 713
 714                 if ( !isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']) )
 715                         $this->internal_error(__('Error ocurred while accessing post metadata for file location.'));
 716
 717                 // delete file
 718                 @unlink($location);
 719
 720                 // delete attachment
 721                 $result = wp_delete_post($postID);
 722
 723                 if ( !$result )
 724                         $this->internal_error(__('For some strange yet very annoying reason, this post could not be deleted.'));
 725
 726                 log_app('function',"delete_attachment($postID). File '$location' deleted.");
 727                 $this->ok();
 728         }
 729
 730         /**
 731          * Retrieve attachment from post.
 732          *
 733          * @since 2.2.0
 734          *
 735          * @param int $postID Post ID.
 736          */
 737         function get_file($postID) {
 738
 739                 // check for not found
 740                 global $entry;
 741                 $this->set_current_entry($postID);
 742
 743                 // then whether user can edit the specific post
 744                 if ( !current_user_can('edit_post', $postID) )
 745                         $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
 746
 747                 $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
 748                 $location = get_option ('upload_path') . '/' . $location;
 749                 $filetype = wp_check_filetype($location);
 750
 751                 if ( !isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']) )
 752                         $this->internal_error(__('Error ocurred while accessing post metadata for file location.'));
 753
 754                 status_header('200');
 755                 header('Content-Type: ' . $entry['post_mime_type']);
 756                 header('Connection: close');
 757
 758                 if ( $fp = fopen($location, "rb") ) {
 759                         status_header('200');
 760                         header('Content-Type: ' . $entry['post_mime_type']);
 761                         header('Connection: close');
 762
 763                         while ( !feof($fp) ) {
 764                                 echo fread($fp, 4096);
 765                         }
 766
 767                         fclose($fp);
 768                 } else {
 769                         status_header ('404');
 770                 }
 771
 772                 log_app('function',"get_file($postID)");
 773                 exit;
 774         }
 775
 776         /**
 777          * Upload file to blog and add attachment to post.
 778          *
 779          * @since 2.2.0
 780          *
 781          * @param int $postID Post ID.
 782          */
 783         function put_file($postID) {
 784
 785                 // first check if user can upload
 786                 if ( !current_user_can('upload_files') )
 787                         $this->auth_required(__('You do not have permission to upload files.'));
 788
 789                 // check for not found
 790                 global $entry;
 791                 $this->set_current_entry($postID);
 792
 793                 // then whether user can edit the specific post
 794                 if ( !current_user_can('edit_post', $postID) )
 795                         $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
 796
 797                 $upload_dir = wp_upload_dir( );
 798                 $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
 799                 $filetype = wp_check_filetype($location);
 800
 801                 $location = "{$upload_dir['basedir']}/{$location}";
 802
 803                 if (!isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']))
 804                         $this->internal_error(__('Error ocurred while accessing post metadata for file location.'));
 805
 806                 $fp = fopen("php://input", "rb");
 807                 $localfp = fopen($location, "w+");
 808                 while ( !feof($fp) ) {
 809                         fwrite($localfp,fread($fp, 4096));
 810                 }
 811                 fclose($fp);
 812                 fclose($localfp);
 813
 814                 $ID = $entry['ID'];
 815                 $pubtimes = $this->get_publish_time($entry->published);
 816                 $post_date = $pubtimes[0];
 817                 $post_date_gmt = $pubtimes[1];
 818                 $pubtimes = $this->get_publish_time($parsed->updated);
 819                 $post_modified = $pubtimes[0];
 820                 $post_modified_gmt = $pubtimes[1];
 821
 822                 $post_data = compact('ID', 'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt');
 823                 $result = wp_update_post($post_data);
 824
 825                 if ( !$result )
 826                         $this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
 827
 828                 wp_update_attachment_metadata( $postID, wp_generate_attachment_metadata( $postID, $location ) );
 829
 830                 log_app('function',"put_file($postID)");
 831                 $this->ok();
 832         }
 833
 834         /**
 835          * Retrieve entries URL.
 836          *
 837          * @since 2.2.0
 838          *
 839          * @param int $page Page ID.
 840          * @return string
 841          */
 842         function get_entries_url($page = null) {
 843                 if ( isset($GLOBALS['post_type']) && ( $GLOBALS['post_type'] == 'attachment' ) )
 844                         $path = $this->MEDIA_PATH;
 845                 else
 846                         $path = $this->ENTRIES_PATH;
 847                 $url = $this->app_base . $path;
 848                 if ( isset($page) && is_int($page) )
 849                         $url .= "/$page";
 850                 return $url;
 851         }
 852
 853         /**
 854          * Display entries URL.
 855          *
 856          * @since 2.2.0
 857          *
 858          * @param int $page Page ID.
 859          */
 860         function the_entries_url($page = null) {
 861                 echo $this->get_entries_url($page);
 862         }
 863
 864         /**
 865          * Retrieve categories URL.
 866          *
 867          * @since 2.2.0
 868          *
 869          * @param mixed $deprecated Not used.
 870          * @return string
 871          */
 872         function get_categories_url($deprecated = '') {
 873                 if ( !empty( $deprecated ) )
 874                         _deprecated_argument( __FUNCTION__, '2.5' );
 875                 return $this->app_base . $this->CATEGORIES_PATH;
 876         }
 877
 878         /**
 879          * Display category URL.
 880          *
 881          * @since 2.2.0
 882          */
 883         function the_categories_url() {
 884                 echo $this->get_categories_url();
 885         }
 886
 887         /**
 888          * Retrieve attachment URL.
 889          *
 890          * @since 2.2.0
 891          *
 892          * @param int $page Page ID.
 893          * @return string
 894          */
 895         function get_attachments_url($page = null) {
 896                 $url = $this->app_base . $this->MEDIA_PATH;
 897                 if (isset($page) && is_int($page)) {
 898                         $url .= "/$page";
 899                 }
 900                 return $url;
 901         }
 902
 903         /**
 904          * Display attachment URL.
 905          *
 906          * @since 2.2.0
 907          *
 908          * @param int $page Page ID.
 909          */
 910         function the_attachments_url($page = null) {
 911                 echo $this->get_attachments_url($page);
 912         }
 913
 914         /**
 915          * Retrieve service URL.
 916          *
 917          * @since 2.3.0
 918          *
 919          * @return string
 920          */
 921         function get_service_url() {
 922                 return $this->app_base . $this->SERVICE_PATH;
 923         }
 924
 925         /**
 926          * Retrieve entry URL.
 927          *
 928          * @since 2.7.0
 929          *
 930          * @param int $postID Post ID.
 931          * @return string
 932          */
 933         function get_entry_url($postID = null) {
 934                 if (!isset($postID)) {
 935                         global $post;
 936                         $postID = (int) $post->ID;
 937                 }
 938
 939                 $url = $this->app_base . $this->ENTRY_PATH . "/$postID";
 940
 941                 log_app('function',"get_entry_url() = $url");
 942                 return $url;
 943         }
 944
 945         /**
 946          * Display entry URL.
 947          *
 948          * @since 2.7.0
 949          *
 950          * @param int $postID Post ID.
 951          */
 952         function the_entry_url($postID = null) {
 953                 echo $this->get_entry_url($postID);
 954         }
 955
 956         /**
 957          * Retrieve media URL.
 958          *
 959          * @since 2.2.0
 960          *
 961          * @param int $postID Post ID.
 962          * @return string
 963          */
 964         function get_media_url($postID = null) {
 965                 if (!isset($postID)) {
 966                         global $post;
 967                         $postID = (int) $post->ID;
 968                 }
 969
 970                 $url = $this->app_base . $this->MEDIA_SINGLE_PATH ."/file/$postID";
 971
 972                 log_app('function',"get_media_url() = $url");
 973                 return $url;
 974         }
 975
 976         /**
 977          * Display the media URL.
 978          *
 979          * @since 2.2.0
 980          *
 981          * @param int $postID Post ID.
 982          */
 983         function the_media_url($postID = null) {
 984                 echo $this->get_media_url($postID);
 985         }
 986
 987         /**
 988          * Set the current entry to post ID.
 989          *
 990          * @since 2.2.0
 991          *
 992          * @param int $postID Post ID.
 993          */
 994         function set_current_entry($postID) {
 995                 global $entry;
 996                 log_app('function',"set_current_entry($postID)");
 997
 998                 if (!isset($postID)) {
 999                         // $this->bad_request();
1000                         $this->not_found();
1001                 }
1002
1003                 $entry = wp_get_single_post($postID,ARRAY_A);
1004
1005                 if (!isset($entry) || !isset($entry['ID']))
1006                         $this->not_found();
1007
1008                 return;
1009         }
1010
1011         /**
1012          * Display posts XML.
1013          *
1014          * @since 2.2.0
1015          *
1016          * @param int $page Optional. Page ID.
1017          * @param string $post_type Optional, default is 'post'. Post Type.
1018          */
1019         function get_posts($page = 1, $post_type = 'post') {
1020                         log_app('function',"get_posts($page, '$post_type')");
1021                         $feed = $this->get_feed($page, $post_type);
1022                         $this->output($feed);
1023         }
1024
1025         /**
1026          * Display attachment XML.
1027          *
1028          * @since 2.2.0
1029          *
1030          * @param int $page Page ID.
1031          * @param string $post_type Optional, default is 'attachment'. Post type.
1032          */
1033         function get_attachments($page = 1, $post_type = 'attachment') {
1034                 log_app('function',"get_attachments($page, '$post_type')");
1035                 $GLOBALS['post_type'] = $post_type;
1036                 $feed = $this->get_feed($page, $post_type);
1037                 $this->output($feed);
1038         }
1039
1040         /**
1041          * Retrieve feed XML.
1042          *
1043          * @since 2.2.0
1044          *
1045          * @param int $page Page ID.
1046          * @param string $post_type Optional, default is post. Post type.
1047          * @return string
1048          */
1049         function get_feed($page = 1, $post_type = 'post') {
1050                 global $post, $wp, $wp_query, $posts, $wpdb, $blog_id;
1051                 log_app('function',"get_feed($page, '$post_type')");
1052                 ob_start();
1053
1054                 $this->ENTRY_PATH = $post_type;
1055
1056                 if (!isset($page)) {
1057                         $page = 1;
1058                 }
1059                 $page = (int) $page;
1060
1061                 $count = get_option('posts_per_rss');
1062
1063                 wp('posts_per_page=' . $count . '&offset=' . ($count * ($page-1) . '&orderby=modified'));
1064
1065                 $post = $GLOBALS['post'];
1066                 $posts = $GLOBALS['posts'];
1067                 $wp = $GLOBALS['wp'];
1068                 $wp_query = $GLOBALS['wp_query'];
1069                 $wpdb = $GLOBALS['wpdb'];
1070                 $blog_id = (int) $GLOBALS['blog_id'];
1071                 log_app('function',"query_posts(# " . print_r($wp_query, true) . "#)");
1072
1073                 log_app('function',"total_count(# $wp_query->max_num_pages #)");
1074                 $last_page = $wp_query->max_num_pages;
1075                 $next_page = (($page + 1) > $last_page) ? NULL : $page + 1;
1076                 $prev_page = ($page - 1) < 1 ? NULL : $page - 1;
1077                 $last_page = ((int)$last_page == 1 || (int)$last_page == 0) ? NULL : (int) $last_page;
1078                 $self_page = $page > 1 ? $page : NULL;
1079 ?><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'); ?> >
1080 <id><?php $this->the_entries_url() ?></id>
1081 <updated><?php echo mysql2date('Y-m-d\TH:i:s\Z', get_lastpostmodified('GMT'), false); ?></updated>
1082 <title type="text"><?php bloginfo_rss('name') ?></title>
1083 <subtitle type="text"><?php bloginfo_rss("description") ?></subtitle>
1084 <link rel="first" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url() ?>" />
1085 <?php if (isset($prev_page)): ?>
1086 <link rel="previous" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($prev_page) ?>" />
1087 <?php endif; ?>
1088 <?php if (isset($next_page)): ?>
1089 <link rel="next" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($next_page) ?>" />
1090 <?php endif; ?>
1091 <link rel="last" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($last_page) ?>" />
1092 <link rel="self" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($self_page) ?>" />
1093 <rights type="text">Copyright <?php echo date('Y'); ?></rights>
1094 <?php do_action('app_head'); ?>
1095 <?php if ( have_posts() ) {
1096                         while ( have_posts() ) {
1097                                 the_post();
1098                                 $this->echo_entry();
1099                         }
1100                 }
1101 ?></feed>
1102 <?php
1103                 $feed = ob_get_contents();
1104                 ob_end_clean();
1105                 return $feed;
1106         }
1107
1108         /**
1109          * Display entry XML.
1110          *
1111          * @since 2.2.0
1112          *
1113          * @param int $postID Post ID.
1114          * @param string $post_type Optional, default is post. Post type.
1115          * @return string.
1116          */
1117         function get_entry($postID, $post_type = 'post') {
1118                 log_app('function',"get_entry($postID, '$post_type')");
1119                 ob_start();
1120                 switch($post_type) {
1121                         case 'post':
1122                                 $varname = 'p';
1123                                 break;
1124                         case 'attachment':
1125                                 $this->ENTRY_PATH = 'attachment';
1126                                 $varname = 'attachment_id';
1127                                 break;
1128                 }
1129                 query_posts($varname . '=' . $postID);
1130                 if ( have_posts() ) {
1131                         while ( have_posts() ) {
1132                                 the_post();
1133                                 $this->echo_entry();
1134                                 log_app('$post',print_r($GLOBALS['post'],true));
1135                                 $entry = ob_get_contents();
1136                                 break;
1137                         }
1138                 }
1139                 ob_end_clean();
1140
1141                 log_app('get_entry returning:',$entry);
1142                 return $entry;
1143         }
1144
1145         /**
1146          * Display post content XML.
1147          *
1148          * @since 2.3.0
1149          */
1150         function echo_entry() { ?>
1151 <entry xmlns="<?php echo $this->ATOM_NS ?>"
1152        xmlns:app="<?php echo $this->ATOMPUB_NS ?>" xml:lang="<?php echo get_option('rss_language'); ?>">
1153         <id><?php the_guid( $GLOBALS['post']->ID ); ?></id>
1154 <?php list($content_type, $content) = prep_atom_text_construct(get_the_title()); ?>
1155         <title type="<?php echo $content_type ?>"><?php echo $content ?></title>
1156         <updated><?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?></updated>
1157         <published><?php echo get_post_time('Y-m-d\TH:i:s\Z', true); ?></published>
1158         <app:edited><?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?></app:edited>
1159         <app:control>
1160                 <app:draft><?php echo ($GLOBALS['post']->post_status == 'draft' ? 'yes' : 'no') ?></app:draft>
1161         </app:control>
1162         <author>
1163                 <name><?php the_author()?></name>
1164 <?php if ( get_the_author_meta('url') && get_the_author_meta('url') != 'http://' ) { ?>
1165                 <uri><?php the_author_meta('url') ?></uri>
1166 <?php } ?>
1167         </author>
1168 <?php if ($GLOBALS['post']->post_type == 'attachment') { ?>
1169         <link rel="edit-media" href="<?php $this->the_media_url() ?>" />
1170         <content type="<?php echo $GLOBALS['post']->post_mime_type ?>" src="<?php the_guid() ; ?>"/>
1171 <?php } else { ?>
1172         <link href="<?php the_permalink_rss() ?>" />
1173 <?php if ( strlen( $GLOBALS['post']->post_content ) ) :
1174 list($content_type, $content) = prep_atom_text_construct(get_the_content()); ?>
1175         <content type="<?php echo $content_type ?>"><?php echo $content ?></content>
1176 <?php endif; ?>
1177 <?php } ?>
1178         <link rel="edit" href="<?php $this->the_entry_url() ?>" />
1179         <?php the_category_rss( 'atom' ); ?>
1180 <?php list($content_type, $content) = prep_atom_text_construct(get_the_excerpt()); ?>
1181         <summary type="<?php echo $content_type ?>"><?php echo $content ?></summary>
1182         <?php do_action('app_entry'); ?>
1183 </entry>
1184 <?php }
1185
1186         /**
1187          * Set 'OK' (200) status header.
1188          *
1189          * @since 2.2.0
1190          */
1191         function ok() {
1192                 log_app('Status','200: OK');
1193                 header('Content-Type: text/plain');
1194                 status_header('200');
1195                 exit;
1196         }
1197
1198         /**
1199          * Set 'No Content' (204) status header.
1200          *
1201          * @since 2.2.0
1202          */
1203         function no_content() {
1204                 log_app('Status','204: No Content');
1205                 header('Content-Type: text/plain');
1206                 status_header('204');
1207                 echo "Moved to Trash.";
1208                 exit;
1209         }
1210
1211         /**
1212          * Display 'Internal Server Error' (500) status header.
1213          *
1214          * @since 2.2.0
1215          *
1216          * @param string $msg Optional. Status string.
1217          */
1218         function internal_error($msg = 'Internal Server Error') {
1219                 log_app('Status','500: Server Error');
1220                 header('Content-Type: text/plain');
1221                 status_header('500');
1222                 echo $msg;
1223                 exit;
1224         }
1225
1226         /**
1227          * Set 'Bad Request' (400) status header.
1228          *
1229          * @since 2.2.0
1230          */
1231         function bad_request() {
1232                 log_app('Status','400: Bad Request');
1233                 header('Content-Type: text/plain');
1234                 status_header('400');
1235                 exit;
1236         }
1237
1238         /**
1239          * Set 'Length Required' (411) status header.
1240          *
1241          * @since 2.2.0
1242          */
1243         function length_required() {
1244                 log_app('Status','411: Length Required');
1245                 header("HTTP/1.1 411 Length Required");
1246                 header('Content-Type: text/plain');
1247                 status_header('411');
1248                 exit;
1249         }
1250
1251         /**
1252          * Set 'Unsupported Media Type' (415) status header.
1253          *
1254          * @since 2.2.0
1255          */
1256         function invalid_media() {
1257                 log_app('Status','415: Unsupported Media Type');
1258                 header("HTTP/1.1 415 Unsupported Media Type");
1259                 header('Content-Type: text/plain');
1260                 exit;
1261         }
1262
1263         /**
1264          * Set 'Forbidden' (403) status header.
1265          *
1266          * @since 2.6.0
1267          */
1268         function forbidden($reason='') {
1269                 log_app('Status','403: Forbidden');
1270                 header('Content-Type: text/plain');
1271                 status_header('403');
1272                 echo $reason;
1273                 exit;
1274         }
1275
1276         /**
1277          * Set 'Not Found' (404) status header.
1278          *
1279          * @since 2.2.0
1280          */
1281         function not_found() {
1282                 log_app('Status','404: Not Found');
1283                 header('Content-Type: text/plain');
1284                 status_header('404');
1285                 exit;
1286         }
1287
1288         /**
1289          * Set 'Not Allowed' (405) status header.
1290          *
1291          * @since 2.2.0
1292          */
1293         function not_allowed($allow) {
1294                 log_app('Status','405: Not Allowed');
1295                 header('Allow: ' . join(',', $allow));
1296                 status_header('405');
1297                 exit;
1298         }
1299
1300         /**
1301          * Display Redirect (302) content and set status headers.
1302          *
1303          * @since 2.3.0
1304          */
1305         function redirect($url) {
1306
1307                 log_app('Status','302: Redirect');
1308                 $escaped_url = esc_attr($url);
1309                 $content = <<<EOD
1310 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
1311 <html>
1312   <head>
1313     <title>302 Found</title>
1314   </head>
1315 <body>
1316   <h1>Found</h1>
1317   <p>The document has moved <a href="$escaped_url">here</a>.</p>
1318   </body>
1319 </html>
1320
1321 EOD;
1322                 header('HTTP/1.1 302 Moved');
1323                 header('Content-Type: text/html');
1324                 header('Location: ' . $url);
1325                 echo $content;
1326                 exit;
1327
1328         }
1329
1330         /**
1331          * Set 'Client Error' (400) status header.
1332          *
1333          * @since 2.2.0
1334          */
1335         function client_error($msg = 'Client Error') {
1336                 log_app('Status','400: Client Error');
1337                 header('Content-Type: text/plain');
1338                 status_header('400');
1339                 exit;
1340         }
1341
1342         /**
1343          * Set created status headers (201).
1344          *
1345          * Sets the 'content-type', 'content-location', and 'location'.
1346          *
1347          * @since 2.2.0
1348          */
1349         function created($post_ID, $content, $post_type = 'post') {
1350                 log_app('created()::$post_ID',"$post_ID, $post_type");
1351                 $edit = $this->get_entry_url($post_ID);
1352                 switch($post_type) {
1353                         case 'post':
1354                                 $ctloc = $this->get_entry_url($post_ID);
1355                                 break;
1356                         case 'attachment':
1357                                 $edit = $this->app_base . "attachments/$post_ID";
1358                                 break;
1359                 }
1360                 header("Content-Type: $this->ATOM_CONTENT_TYPE");
1361                 if (isset($ctloc))
1362                         header('Content-Location: ' . $ctloc);
1363                 header('Location: ' . $edit);
1364                 status_header('201');
1365                 echo $content;
1366                 exit;
1367         }
1368
1369         /**
1370          * Set 'Auth Required' (401) headers.
1371          *
1372          * @since 2.2.0
1373          *
1374          * @param string $msg Status header content and HTML content.
1375          */
1376         function auth_required($msg) {
1377                 log_app('Status','401: Auth Required');
1378                 nocache_headers();
1379                 header('WWW-Authenticate: Basic realm="WordPress Atom Protocol"');
1380                 header("HTTP/1.1 401 $msg");
1381                 header('Status: 401 ' . $msg);
1382                 header('Content-Type: text/html');
1383                 $content = <<<EOD
1384 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
1385 <html>
1386   <head>
1387     <title>401 Unauthorized</title>
1388   </head>
1389 <body>
1390     <h1>401 Unauthorized</h1>
1391     <p>$msg</p>
1392   </body>
1393 </html>
1394
1395 EOD;
1396                 echo $content;
1397                 exit;
1398         }
1399
1400         /**
1401          * Display XML and set headers with content type.
1402          *
1403          * @since 2.2.0
1404          *
1405          * @param string $xml Display feed content.
1406          * @param string $ctype Optional, default is 'atom+xml'. Feed content type.
1407          */
1408         function output($xml, $ctype = 'application/atom+xml') {
1409                         status_header('200');
1410                         $xml = '<?xml version="1.0" encoding="' . strtolower(get_option('blog_charset')) . '"?>'."\n".$xml;
1411                         header('Connection: close');
1412                         header('Content-Length: '. strlen($xml));
1413                         header('Content-Type: ' . $ctype);
1414                         header('Content-Disposition: attachment; filename=atom.xml');
1415                         header('Date: '. date('r'));
1416                         if ($this->do_output)
1417                                 echo $xml;
1418                         log_app('function', "output:\n$xml");
1419                         exit;
1420         }
1421
1422         /**
1423          * Sanitize content for database usage.
1424          *
1425          * @since 2.2.0
1426          *
1427          * @param array $array Sanitize array and multi-dimension array.
1428          */
1429         function escape(&$array) {
1430                 global $wpdb;
1431
1432                 foreach ($array as $k => $v) {
1433                                 if (is_array($v)) {
1434                                                 $this->escape($array[$k]);
1435                                 } else if (is_object($v)) {
1436                                                 //skip
1437                                 } else {
1438                                                 $array[$k] = $wpdb->escape($v);
1439                                 }
1440                 }
1441         }
1442
1443         /**
1444          * Access credential through various methods and perform login.
1445          *
1446          * @since 2.2.0
1447          *
1448          * @return bool
1449          */
1450         function authenticate() {
1451                 log_app("authenticate()",print_r($_ENV, true));
1452
1453                 // if using mod_rewrite/ENV hack
1454                 // http://www.besthostratings.com/articles/http-auth-php-cgi.html
1455                 if (isset($_SERVER['HTTP_AUTHORIZATION'])) {
1456                         list($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']) =
1457                                 explode(':', base64_decode(substr($_SERVER['HTTP_AUTHORIZATION'], 6)));
1458                 } else if (isset($_SERVER['REDIRECT_REMOTE_USER'])) {
1459                         // Workaround for setups that do not forward HTTP_AUTHORIZATION
1460                         // See http://trac.wordpress.org/ticket/7361
1461                         list($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']) =
1462                                 explode(':', base64_decode(substr($_SERVER['REDIRECT_REMOTE_USER'], 6)));
1463                 }
1464
1465                 // If Basic Auth is working...
1466                 if (isset($_SERVER['PHP_AUTH_USER']) && isset($_SERVER['PHP_AUTH_PW'])) {
1467                         log_app("Basic Auth",$_SERVER['PHP_AUTH_USER']);
1468
1469                         $user = wp_authenticate($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']);
1470                         if ( $user && !is_wp_error($user) ) {
1471                                 wp_set_current_user($user->ID);
1472                                 log_app("authenticate()", $user->user_login);
1473                                 return true;
1474                         }
1475                 }
1476
1477                 return false;
1478         }
1479
1480         /**
1481          * Retrieve accepted content types.
1482          *
1483          * @since 2.2.0
1484          *
1485          * @param array $types Optional. Content Types.
1486          * @return string
1487          */
1488         function get_accepted_content_type($types = null) {
1489
1490                 if (!isset($types)) {
1491                         $types = $this->media_content_types;
1492                 }
1493
1494                 if (!isset($_SERVER['CONTENT_LENGTH']) || !isset($_SERVER['CONTENT_TYPE'])) {
1495                         $this->length_required();
1496                 }
1497
1498                 $type = $_SERVER['CONTENT_TYPE'];
1499                 list($type,$subtype) = explode('/',$type);
1500                 list($subtype) = explode(";",$subtype); // strip MIME parameters
1501                 log_app("get_accepted_content_type", "type=$type, subtype=$subtype");
1502
1503                 foreach($types as $t) {
1504                         list($acceptedType,$acceptedSubtype) = explode('/',$t);
1505                         if ($acceptedType == '*' || $acceptedType == $type) {
1506                                 if ($acceptedSubtype == '*' || $acceptedSubtype == $subtype)
1507                                         return $type . "/" . $subtype;
1508                         }
1509                 }
1510
1511                 $this->invalid_media();
1512         }
1513
1514         /**
1515          * Process conditionals for posts.
1516          *
1517          * @since 2.2.0
1518          */
1519         function process_conditionals() {
1520
1521                 if (empty($this->params)) return;
1522                 if ($_SERVER['REQUEST_METHOD'] == 'DELETE') return;
1523
1524                 switch($this->params[0]) {
1525                         case $this->ENTRY_PATH:
1526                                 global $post;
1527                                 $post = wp_get_single_post($this->params[1]);
1528                                 $wp_last_modified = get_post_modified_time('D, d M Y H:i:s', true);
1529                                 $post = NULL;
1530                                 break;
1531                         case $this->ENTRIES_PATH:
1532                                 $wp_last_modified = mysql2date('D, d M Y H:i:s', get_lastpostmodified('GMT'), 0).' GMT';
1533                                 break;
1534                         default:
1535                                 return;
1536                 }
1537                 $wp_etag = md5($wp_last_modified);
1538                 @header("Last-Modified: $wp_last_modified");
1539                 @header("ETag: $wp_etag");
1540
1541                 // Support for Conditional GET
1542                 if (isset($_SERVER['HTTP_IF_NONE_MATCH']))
1543                         $client_etag = stripslashes($_SERVER['HTTP_IF_NONE_MATCH']);
1544                 else
1545                         $client_etag = false;
1546
1547                 $client_last_modified = trim( $_SERVER['HTTP_IF_MODIFIED_SINCE']);
1548                 // If string is empty, return 0. If not, attempt to parse into a timestamp
1549                 $client_modified_timestamp = $client_last_modified ? strtotime($client_last_modified) : 0;
1550
1551                 // Make a timestamp for our most recent modification...
1552                 $wp_modified_timestamp = strtotime($wp_last_modified);
1553
1554                 if ( ($client_last_modified && $client_etag) ?
1555                 (($client_modified_timestamp >= $wp_modified_timestamp) && ($client_etag == $wp_etag)) :
1556                 (($client_modified_timestamp >= $wp_modified_timestamp) || ($client_etag == $wp_etag)) ) {
1557                         status_header( 304 );
1558                         exit;
1559                 }
1560         }
1561
1562         /**
1563          * Convert RFC3339 time string to timestamp.
1564          *
1565          * @since 2.3.0
1566          *
1567          * @param string $str String to time.
1568          * @return bool|int false if format is incorrect.
1569          */
1570         function rfc3339_str2time($str) {
1571
1572                 $match = false;
1573                 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, $match))
1574                         return false;
1575
1576                 if ($match[3] == 'Z')
1577                         $match[3] = '+0000';
1578
1579                 return strtotime($match[1] . " " . $match[2] . " " . $match[3]);
1580         }
1581
1582         /**
1583          * Retrieve published time to display in XML.
1584          *
1585          * @since 2.3.0
1586          *
1587          * @param string $published Time string.
1588          * @return string
1589          */
1590         function get_publish_time($published) {
1591
1592                 $pubtime = $this->rfc3339_str2time($published);
1593
1594                 if (!$pubtime) {
1595                         return array(current_time('mysql'),current_time('mysql',1));
1596                 } else {
1597                         return array(date("Y-m-d H:i:s", $pubtime), gmdate("Y-m-d H:i:s", $pubtime));
1598                 }
1599         }
1600
1601 }
1602
1603 /**
1604  * AtomServer
1605  * @var AtomServer
1606  * @global object $server
1607  */
1608 $server = new AtomServer();
1609 $server->handle_request();
1610
1611 ?>