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 /** Admin Image API for metadata updating */
  30 require_once(ABSPATH . '/wp-admin/includes/image.php');
  31
  32 $_SERVER['PATH_INFO'] = preg_replace( '/.*\/wp-app\.php/', '', $_SERVER['REQUEST_URI'] );
  33
  34 /**
  35  * Whether to enable Atom Publishing Protocol Logging.
  36  *
  37  * @name app_logging
  38  * @var int|bool
  39  */
  40 $app_logging = 0;
  41
  42 /**
  43  * Whether to always authenticate user. Permanently set to true.
  44  *
  45  * @name always_authenticate
  46  * @var int|bool
  47  * @todo Should be an option somewhere
  48  */
  49 $always_authenticate = 1;
  50
  51 /**
  52  * Writes logging info to a file.
  53  *
  54  * @since 2.2.0
  55  * @uses $app_logging
  56  * @package WordPress
  57  * @subpackage Logging
  58  *
  59  * @param string $label Type of logging
  60  * @param string $msg Information describing logging reason.
  61  */
  62 function log_app($label,$msg) {
  63         global $app_logging;
  64         if ($app_logging) {
  65                 $fp = fopen( 'wp-app.log', 'a+');
  66                 $date = gmdate( 'Y-m-d H:i:s' );
  67                 fwrite($fp, "\n\n$date - $label\n$msg\n");
  68                 fclose($fp);
  69         }
  70 }
  71
  72 if ( !function_exists('wp_set_current_user') ) :
  73 /**
  74  * @ignore
  75  */
  76 function wp_set_current_user($id, $name = '') {
  77         global $current_user;
  78
  79         if ( isset($current_user) && ($id == $current_user->ID) )
  80                 return $current_user;
  81
  82         $current_user = new WP_User($id, $name);
  83
  84         return $current_user;
  85 }
  86 endif;
  87
  88 /**
  89  * Filter to add more post statuses.
  90  *
  91  * @since 2.2.0
  92  *
  93  * @param string $where SQL statement to filter.
  94  * @return string Filtered SQL statement with added post_status for where clause.
  95  */
  96 function wa_posts_where_include_drafts_filter($where) {
  97         $where = str_replace("post_status = 'publish'","post_status = 'publish' OR post_status = 'future' OR post_status = 'draft' OR post_status = 'inherit'", $where);
  98         return $where;
  99
 100 }
 101 add_filter('posts_where', 'wa_posts_where_include_drafts_filter');
 102
 103 /**
 104  * WordPress AtomPub API implementation.
 105  *
 106  * @package WordPress
 107  * @subpackage Publishing
 108  * @since 2.2.0
 109  */
 110 class AtomServer {
 111
 112         /**
 113          * ATOM content type.
 114          *
 115          * @since 2.2.0
 116          * @var string
 117          */
 118         var $ATOM_CONTENT_TYPE = 'application/atom+xml';
 119
 120         /**
 121          * Categories ATOM content type.
 122          *
 123          * @since 2.2.0
 124          * @var string
 125          */
 126         var $CATEGORIES_CONTENT_TYPE = 'application/atomcat+xml';
 127
 128         /**
 129          * Service ATOM content type.
 130          *
 131          * @since 2.3.0
 132          * @var string
 133          */
 134         var $SERVICE_CONTENT_TYPE = 'application/atomsvc+xml';
 135
 136         /**
 137          * ATOM XML namespace.
 138          *
 139          * @since 2.3.0
 140          * @var string
 141          */
 142         var $ATOM_NS = 'http://www.w3.org/2005/Atom';
 143
 144         /**
 145          * ATOMPUB XML namespace.
 146          *
 147          * @since 2.3.0
 148          * @var string
 149          */
 150         var $ATOMPUB_NS = 'http://www.w3.org/2007/app';
 151
 152         /**
 153          * Entries path.
 154          *
 155          * @since 2.2.0
 156          * @var string
 157          */
 158         var $ENTRIES_PATH = "posts";
 159
 160         /**
 161          * Categories path.
 162          *
 163          * @since 2.2.0
 164          * @var string
 165          */
 166         var $CATEGORIES_PATH = "categories";
 167
 168         /**
 169          * Media path.
 170          *
 171          * @since 2.2.0
 172          * @var string
 173          */
 174         var $MEDIA_PATH = "attachments";
 175
 176         /**
 177          * Entry path.
 178          *
 179          * @since 2.2.0
 180          * @var string
 181          */
 182         var $ENTRY_PATH = "post";
 183
 184         /**
 185          * Service path.
 186          *
 187          * @since 2.2.0
 188          * @var string
 189          */
 190         var $SERVICE_PATH = "service";
 191
 192         /**
 193          * Media single path.
 194          *
 195          * @since 2.2.0
 196          * @var string
 197          */
 198         var $MEDIA_SINGLE_PATH = "attachment";
 199
 200         /**
 201          * ATOMPUB parameters.
 202          *
 203          * @since 2.2.0
 204          * @var array
 205          */
 206         var $params = array();
 207
 208         /**
 209          * Supported ATOMPUB media types.
 210          *
 211          * @since 2.3.0
 212          * @var array
 213          */
 214         var $media_content_types = array('image/*','audio/*','video/*');
 215
 216         /**
 217          * ATOMPUB content type(s).
 218          *
 219          * @since 2.2.0
 220          * @var array
 221          */
 222         var $atom_content_types = array('application/atom+xml');
 223
 224         /**
 225          * ATOMPUB methods.
 226          *
 227          * @since 2.2.0
 228          * @var unknown_type
 229          */
 230         var $selectors = array();
 231
 232         /**
 233          * Whether to do output.
 234          *
 235          * Support for head.
 236          *
 237          * @since 2.2.0
 238          * @var bool
 239          */
 240         var $do_output = true;
 241
 242         /**
 243          * PHP4 constructor - Sets up object properties.
 244          *
 245          * @since 2.2.0
 246          * @return AtomServer
 247          */
 248         function AtomServer() {
 249
 250                 $this->script_name = array_pop(explode('/',$_SERVER['SCRIPT_NAME']));
 251                 $this->app_base = get_bloginfo('url') . '/' . $this->script_name . '/';
 252                 if ( isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) == 'on' ) {
 253                         $this->app_base = preg_replace( '/^http:\/\//', 'https://', $this->app_base );
 254                 }
 255
 256                 $this->selectors = array(
 257                         '@/service$@' =>
 258                                 array('GET' => 'get_service'),
 259                         '@/categories$@' =>
 260                                 array('GET' => 'get_categories_xml'),
 261                         '@/post/(\d+)$@' =>
 262                                 array('GET' => 'get_post',
 263                                                 'PUT' => 'put_post',
 264                                                 'DELETE' => 'delete_post'),
 265                         '@/posts/?(\d+)?$@' =>
 266                                 array('GET' => 'get_posts',
 267                                                 'POST' => 'create_post'),
 268                         '@/attachments/?(\d+)?$@' =>
 269                                 array('GET' => 'get_attachment',
 270                                                 'POST' => 'create_attachment'),
 271                         '@/attachment/file/(\d+)$@' =>
 272                                 array('GET' => 'get_file',
 273                                                 'PUT' => 'put_file',
 274                                                 'DELETE' => 'delete_file'),
 275                         '@/attachment/(\d+)$@' =>
 276                                 array('GET' => 'get_attachment',
 277                                                 'PUT' => 'put_attachment',
 278                                                 'DELETE' => 'delete_attachment'),
 279                 );
 280         }
 281
 282         /**
 283          * Handle ATOMPUB request.
 284          *
 285          * @since 2.2.0
 286          */
 287         function handle_request() {
 288                 global $always_authenticate;
 289
 290                 if( !empty( $_SERVER['ORIG_PATH_INFO'] ) )
 291                         $path = $_SERVER['ORIG_PATH_INFO'];
 292                 else
 293                         $path = $_SERVER['PATH_INFO'];
 294
 295                 $method = $_SERVER['REQUEST_METHOD'];
 296
 297                 log_app('REQUEST',"$method $path\n================");
 298
 299                 $this->process_conditionals();
 300                 //$this->process_conditionals();
 301
 302                 // exception case for HEAD (treat exactly as GET, but don't output)
 303                 if($method == 'HEAD') {
 304                         $this->do_output = false;
 305                         $method = 'GET';
 306                 }
 307
 308                 // redirect to /service in case no path is found.
 309                 if(strlen($path) == 0 || $path == '/') {
 310                         $this->redirect($this->get_service_url());
 311                 }
 312
 313                 // check to see if AtomPub is enabled
 314                 if( !get_option( 'enable_app' ) )
 315                         $this->forbidden( sprintf( __( 'AtomPub services are disabled on this blog.  An admin user can enable them at %s' ), admin_url('options-writing.php') ) );
 316
 317                 // dispatch
 318                 foreach($this->selectors as $regex => $funcs) {
 319                         if(preg_match($regex, $path, $matches)) {
 320                         if(isset($funcs[$method])) {
 321
 322                                 // authenticate regardless of the operation and set the current
 323                                 // user. each handler will decide if auth is required or not.
 324                                 if(!$this->authenticate()) {
 325                                         if ($always_authenticate) {
 326                                                 $this->auth_required('Credentials required.');
 327                                         }
 328                                 }
 329
 330                                 array_shift($matches);
 331                                 call_user_func_array(array(&$this,$funcs[$method]), $matches);
 332                                 exit();
 333                         } else {
 334                                 // only allow what we have handlers for...
 335                                 $this->not_allowed(array_keys($funcs));
 336                         }
 337                         }
 338                 }
 339
 340                 // oops, nothing found
 341                 $this->not_found();
 342         }
 343
 344         /**
 345          * Retrieve XML for ATOMPUB service.
 346          *
 347          * @since 2.2.0
 348          */
 349         function get_service() {
 350                 log_app('function','get_service()');
 351
 352                 if( !current_user_can( 'edit_posts' ) )
 353                         $this->auth_required( __( 'Sorry, you do not have the right to access this blog.' ) );
 354
 355                 $entries_url = esc_attr($this->get_entries_url());
 356                 $categories_url = esc_attr($this->get_categories_url());
 357                 $media_url = esc_attr($this->get_attachments_url());
 358                 foreach ($this->media_content_types as $med) {
 359                         $accepted_media_types = $accepted_media_types . "<accept>" . $med . "</accept>";
 360                 }
 361                 $atom_prefix="atom";
 362                 $atom_blogname=get_bloginfo('name');
 363                 $service_doc = <<<EOD
 364 <service xmlns="$this->ATOMPUB_NS" xmlns:$atom_prefix="$this->ATOM_NS">
 365   <workspace>
 366     <$atom_prefix:title>$atom_blogname Workspace</$atom_prefix:title>
 367     <collection href="$entries_url">
 368       <$atom_prefix:title>$atom_blogname Posts</$atom_prefix:title>
 369       <accept>$this->ATOM_CONTENT_TYPE;type=entry</accept>
 370       <categories href="$categories_url" />
 371     </collection>
 372     <collection href="$media_url">
 373       <$atom_prefix:title>$atom_blogname Media</$atom_prefix:title>
 374       $accepted_media_types
 375     </collection>
 376   </workspace>
 377 </service>
 378
 379 EOD;
 380
 381                 $this->output($service_doc, $this->SERVICE_CONTENT_TYPE);
 382         }
 383
 384         /**
 385          * Retrieve categories list in XML format.
 386          *
 387          * @since 2.2.0
 388          */
 389         function get_categories_xml() {
 390                 log_app('function','get_categories_xml()');
 391
 392                 if( !current_user_can( 'edit_posts' ) )
 393                         $this->auth_required( __( 'Sorry, you do not have the right to access this blog.' ) );
 394
 395                 $home = esc_attr(get_bloginfo_rss('home'));
 396
 397                 $categories = "";
 398                 $cats = get_categories("hierarchical=0&hide_empty=0");
 399                 foreach ((array) $cats as $cat) {
 400                         $categories .= "    <category term=\"" . esc_attr($cat->name) .  "\" />\n";
 401 }
 402                 $output = <<<EOD
 403 <app:categories xmlns:app="$this->ATOMPUB_NS"
 404         xmlns="$this->ATOM_NS"
 405         fixed="yes" scheme="$home">
 406         $categories
 407 </app:categories>
 408 EOD;
 409         $this->output($output, $this->CATEGORIES_CONTENT_TYPE);
 410 }
 411
 412         /**
 413          * Create new post.
 414          *
 415          * @since 2.2.0
 416          */
 417         function create_post() {
 418                 global $blog_id, $user_ID;
 419                 $this->get_accepted_content_type($this->atom_content_types);
 420
 421                 $parser = new AtomParser();
 422                 if(!$parser->parse()) {
 423                         $this->client_error();
 424                 }
 425
 426                 $entry = array_pop($parser->feed->entries);
 427
 428                 log_app('Received entry:', print_r($entry,true));
 429
 430                 $catnames = array();
 431                 foreach($entry->categories as $cat)
 432                         array_push($catnames, $cat["term"]);
 433
 434                 $wp_cats = get_categories(array('hide_empty' => false));
 435
 436                 $post_category = array();
 437
 438                 foreach($wp_cats as $cat) {
 439                         if(in_array($cat->name, $catnames))
 440                                 array_push($post_category, $cat->term_id);
 441                 }
 442
 443                 $publish = (isset($entry->draft) && trim($entry->draft) == 'yes') ? false : true;
 444
 445                 $cap = ($publish) ? 'publish_posts' : 'edit_posts';
 446
 447                 if(!current_user_can($cap))
 448                         $this->auth_required(__('Sorry, you do not have the right to edit/publish new posts.'));
 449
 450                 $blog_ID = (int ) $blog_id;
 451                 $post_status = ($publish) ? 'publish' : 'draft';
 452                 $post_author = (int) $user_ID;
 453                 $post_title = $entry->title[1];
 454                 $post_content = $entry->content[1];
 455                 $post_excerpt = $entry->summary[1];
 456                 $pubtimes = $this->get_publish_time($entry->published);
 457                 $post_date = $pubtimes[0];
 458                 $post_date_gmt = $pubtimes[1];
 459
 460                 if ( isset( $_SERVER['HTTP_SLUG'] ) )
 461                         $post_name = $_SERVER['HTTP_SLUG'];
 462
 463                 $post_data = compact('blog_ID', 'post_author', 'post_date', 'post_date_gmt', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_name');
 464
 465                 $this->escape($post_data);
 466                 log_app('Inserting Post. Data:', print_r($post_data,true));
 467
 468                 $postID = wp_insert_post($post_data);
 469                 if ( is_wp_error( $postID ) )
 470                         $this->internal_error($postID->get_error_message());
 471
 472                 if (!$postID)
 473                         $this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
 474
 475                 // getting warning here about unable to set headers
 476                 // because something in the cache is printing to the buffer
 477                 // could we clean up wp_set_post_categories or cache to not print
 478                 // this could affect our ability to send back the right headers
 479                 @wp_set_post_categories($postID, $post_category);
 480
 481                 do_action( 'atompub_create_post', $postID, $entry );
 482
 483                 $output = $this->get_entry($postID);
 484
 485                 log_app('function',"create_post($postID)");
 486                 $this->created($postID, $output);
 487         }
 488
 489         /**
 490          * Retrieve post.
 491          *
 492          * @since 2.2.0
 493          *
 494          * @param int $postID Post ID.
 495          */
 496         function get_post($postID) {
 497                 global $entry;
 498
 499                 if( !current_user_can( 'edit_post', $postID ) )
 500                         $this->auth_required( __( 'Sorry, you do not have the right to access this post.' ) );
 501
 502                 $this->set_current_entry($postID);
 503                 $output = $this->get_entry($postID);
 504                 log_app('function',"get_post($postID)");
 505                 $this->output($output);
 506
 507         }
 508
 509         /**
 510          * Update post.
 511          *
 512          * @since 2.2.0
 513          *
 514          * @param int $postID Post ID.
 515          */
 516         function put_post($postID) {
 517                 // checked for valid content-types (atom+xml)
 518                 // quick check and exit
 519                 $this->get_accepted_content_type($this->atom_content_types);
 520
 521                 $parser = new AtomParser();
 522                 if(!$parser->parse()) {
 523                         $this->bad_request();
 524                 }
 525
 526                 $parsed = array_pop($parser->feed->entries);
 527
 528                 log_app('Received UPDATED entry:', print_r($parsed,true));
 529
 530                 // check for not found
 531                 global $entry;
 532                 $this->set_current_entry($postID);
 533
 534                 if(!current_user_can('edit_post', $entry['ID']))
 535                         $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
 536
 537                 $publish = (isset($parsed->draft) && trim($parsed->draft) == 'yes') ? false : true;
 538                 $post_status = ($publish) ? 'publish' : 'draft';
 539
 540                 extract($entry);
 541
 542                 $post_title = $parsed->title[1];
 543                 $post_content = $parsed->content[1];
 544                 $post_excerpt = $parsed->summary[1];
 545                 $pubtimes = $this->get_publish_time($entry->published);
 546                 $post_date = $pubtimes[0];
 547                 $post_date_gmt = $pubtimes[1];
 548                 $pubtimes = $this->get_publish_time($parsed->updated);
 549                 $post_modified = $pubtimes[0];
 550                 $post_modified_gmt = $pubtimes[1];
 551
 552                 $postdata = compact('ID', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt');
 553                 $this->escape($postdata);
 554
 555                 $result = wp_update_post($postdata);
 556
 557                 if (!$result) {
 558                         $this->internal_error(__('For some strange yet very annoying reason, this post could not be edited.'));
 559                 }
 560
 561                 do_action( 'atompub_put_post', $ID, $parsed );
 562
 563                 log_app('function',"put_post($postID)");
 564                 $this->ok();
 565         }
 566
 567         /**
 568          * Remove post.
 569          *
 570          * @since 2.2.0
 571          *
 572          * @param int $postID Post ID.
 573          */
 574         function delete_post($postID) {
 575
 576                 // check for not found
 577                 global $entry;
 578                 $this->set_current_entry($postID);
 579
 580                 if(!current_user_can('edit_post', $postID)) {
 581                         $this->auth_required(__('Sorry, you do not have the right to delete this post.'));
 582                 }
 583
 584                 if ($entry['post_type'] == 'attachment') {
 585                         $this->delete_attachment($postID);
 586                 } else {
 587                         $result = wp_delete_post($postID);
 588
 589                         if (!$result) {
 590                                 $this->internal_error(__('For some strange yet very annoying reason, this post could not be deleted.'));
 591                         }
 592
 593                         log_app('function',"delete_post($postID)");
 594                         $this->ok();
 595                 }
 596
 597         }
 598
 599         /**
 600          * Retrieve attachment.
 601          *
 602          * @since 2.2.0
 603          *
 604          * @param int $postID Optional. Post ID.
 605          */
 606         function get_attachment($postID = null) {
 607                 if( !current_user_can( 'upload_files' ) )
 608                         $this->auth_required( __( 'Sorry, you do not have permission to upload files.' ) );
 609
 610                 if (!isset($postID)) {
 611                         $this->get_attachments();
 612                 } else {
 613                         $this->set_current_entry($postID);
 614                         $output = $this->get_entry($postID, 'attachment');
 615                         log_app('function',"get_attachment($postID)");
 616                         $this->output($output);
 617                 }
 618         }
 619
 620         /**
 621          * Create new attachment.
 622          *
 623          * @since 2.2.0
 624          */
 625         function create_attachment() {
 626
 627                 $type = $this->get_accepted_content_type();
 628
 629                 if(!current_user_can('upload_files'))
 630                         $this->auth_required(__('You do not have permission to upload files.'));
 631
 632                 $fp = fopen("php://input", "rb");
 633                 $bits = null;
 634                 while(!feof($fp)) {
 635                         $bits .= fread($fp, 4096);
 636                 }
 637                 fclose($fp);
 638
 639                 $slug = '';
 640                 if ( isset( $_SERVER['HTTP_SLUG'] ) )
 641                         $slug = sanitize_file_name( $_SERVER['HTTP_SLUG'] );
 642                 elseif ( isset( $_SERVER['HTTP_TITLE'] ) )
 643                         $slug = sanitize_file_name( $_SERVER['HTTP_TITLE'] );
 644                 elseif ( empty( $slug ) ) // just make a random name
 645                         $slug = substr( md5( uniqid( microtime() ) ), 0, 7);
 646                 $ext = preg_replace( '|.*/([a-z0-9]+)|', '$1', $_SERVER['CONTENT_TYPE'] );
 647                 $slug = "$slug.$ext";
 648                 $file = wp_upload_bits( $slug, NULL, $bits);
 649
 650                 log_app('wp_upload_bits returns:',print_r($file,true));
 651
 652                 $url = $file['url'];
 653                 $file = $file['file'];
 654
 655                 do_action('wp_create_file_in_uploads', $file); // replicate
 656
 657                 // Construct the attachment array
 658                 $attachment = array(
 659                         'post_title' => $slug,
 660                         'post_content' => $slug,
 661                         'post_status' => 'attachment',
 662                         'post_parent' => 0,
 663                         'post_mime_type' => $type,
 664                         'guid' => $url
 665                         );
 666
 667                 // Save the data
 668                 $postID = wp_insert_attachment($attachment, $file);
 669
 670                 if (!$postID)
 671                         $this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
 672
 673                 $output = $this->get_entry($postID, 'attachment');
 674
 675                 $this->created($postID, $output, 'attachment');
 676                 log_app('function',"create_attachment($postID)");
 677         }
 678
 679         /**
 680          * Update attachment.
 681          *
 682          * @since 2.2.0
 683          *
 684          * @param int $postID Post ID.
 685          */
 686         function put_attachment($postID) {
 687                 // checked for valid content-types (atom+xml)
 688                 // quick check and exit
 689                 $this->get_accepted_content_type($this->atom_content_types);
 690
 691                 $parser = new AtomParser();
 692                 if(!$parser->parse()) {
 693                         $this->bad_request();
 694                 }
 695
 696                 $parsed = array_pop($parser->feed->entries);
 697
 698                 // check for not found
 699                 global $entry;
 700                 $this->set_current_entry($postID);
 701
 702                 if(!current_user_can('edit_post', $entry['ID']))
 703                         $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
 704
 705                 extract($entry);
 706
 707                 $post_title = $parsed->title[1];
 708                 $post_content = $parsed->summary[1];
 709                 $pubtimes = $this->get_publish_time($parsed->updated);
 710                 $post_modified = $pubtimes[0];
 711                 $post_modified_gmt = $pubtimes[1];
 712
 713                 $postdata = compact('ID', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_modified', 'post_modified_gmt');
 714                 $this->escape($postdata);
 715
 716                 $result = wp_update_post($postdata);
 717
 718                 if (!$result) {
 719                         $this->internal_error(__('For some strange yet very annoying reason, this post could not be edited.'));
 720                 }
 721
 722                 log_app('function',"put_attachment($postID)");
 723                 $this->ok();
 724         }
 725
 726         /**
 727          * Remove attachment.
 728          *
 729          * @since 2.2.0
 730          *
 731          * @param int $postID Post ID.
 732          */
 733         function delete_attachment($postID) {
 734                 log_app('function',"delete_attachment($postID). File '$location' deleted.");
 735
 736                 // check for not found
 737                 global $entry;
 738                 $this->set_current_entry($postID);
 739
 740                 if(!current_user_can('edit_post', $postID)) {
 741                         $this->auth_required(__('Sorry, you do not have the right to delete this post.'));
 742                 }
 743
 744                 $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
 745                 $filetype = wp_check_filetype($location);
 746
 747                 if(!isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']))
 748                         $this->internal_error(__('Error ocurred while accessing post metadata for file location.'));
 749
 750                 // delete file
 751                 @unlink($location);
 752
 753                 // delete attachment
 754                 $result = wp_delete_post($postID);
 755
 756                 if (!$result) {
 757                         $this->internal_error(__('For some strange yet very annoying reason, this post could not be deleted.'));
 758                 }
 759
 760                 log_app('function',"delete_attachment($postID). File '$location' deleted.");
 761                 $this->ok();
 762         }
 763
 764         /**
 765          * Retrieve attachment from post.
 766          *
 767          * @since 2.2.0
 768          *
 769          * @param int $postID Post ID.
 770          */
 771         function get_file($postID) {
 772
 773                 // check for not found
 774                 global $entry;
 775                 $this->set_current_entry($postID);
 776
 777                 // then whether user can edit the specific post
 778                 if(!current_user_can('edit_post', $postID)) {
 779                         $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
 780                 }
 781
 782                 $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
 783                 $filetype = wp_check_filetype($location);
 784
 785                 if(!isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']))
 786                         $this->internal_error(__('Error ocurred while accessing post metadata for file location.'));
 787
 788                 status_header('200');
 789                 header('Content-Type: ' . $entry['post_mime_type']);
 790                 header('Connection: close');
 791
 792                 $fp = fopen($location, "rb");
 793                 while(!feof($fp)) {
 794                         echo fread($fp, 4096);
 795                 }
 796                 fclose($fp);
 797
 798                 log_app('function',"get_file($postID)");
 799                 exit;
 800         }
 801
 802         /**
 803          * Upload file to blog and add attachment to post.
 804          *
 805          * @since 2.2.0
 806          *
 807          * @param int $postID Post ID.
 808          */
 809         function put_file($postID) {
 810
 811                 // first check if user can upload
 812                 if(!current_user_can('upload_files'))
 813                         $this->auth_required(__('You do not have permission to upload files.'));
 814
 815                 // check for not found
 816                 global $entry;
 817                 $this->set_current_entry($postID);
 818
 819                 // then whether user can edit the specific post
 820                 if(!current_user_can('edit_post', $postID)) {
 821                         $this->auth_required(__('Sorry, you do not have the right to edit this post.'));
 822                 }
 823
 824                 $upload_dir = wp_upload_dir( );
 825                 $location = get_post_meta($entry['ID'], '_wp_attached_file', true);
 826                 $filetype = wp_check_filetype($location);
 827
 828                 $location = "{$upload_dir['basedir']}/{$location}";
 829
 830                 if(!isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']))
 831                         $this->internal_error(__('Error ocurred while accessing post metadata for file location.'));
 832
 833                 $fp = fopen("php://input", "rb");
 834                 $localfp = fopen($location, "w+");
 835                 while(!feof($fp)) {
 836                         fwrite($localfp,fread($fp, 4096));
 837                 }
 838                 fclose($fp);
 839                 fclose($localfp);
 840
 841                 $ID = $entry['ID'];
 842                 $pubtimes = $this->get_publish_time($entry->published);
 843                 $post_date = $pubtimes[0];
 844                 $post_date_gmt = $pubtimes[1];
 845                 $pubtimes = $this->get_publish_time($parsed->updated);
 846                 $post_modified = $pubtimes[0];
 847                 $post_modified_gmt = $pubtimes[1];
 848
 849                 $post_data = compact('ID', 'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt');
 850                 $result = wp_update_post($post_data);
 851
 852                 if (!$result) {
 853                         $this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
 854                 }
 855
 856                 wp_update_attachment_metadata( $postID, wp_generate_attachment_metadata( $postID, $location ) );
 857
 858                 log_app('function',"put_file($postID)");
 859                 $this->ok();
 860         }
 861
 862         /**
 863          * Retrieve entries URL.
 864          *
 865          * @since 2.2.0
 866          *
 867          * @param int $page Page ID.
 868          * @return string
 869          */
 870         function get_entries_url($page = null) {
 871                 if($GLOBALS['post_type'] == 'attachment') {
 872                         $path = $this->MEDIA_PATH;
 873                 } else {
 874                         $path = $this->ENTRIES_PATH;
 875                 }
 876                 $url = $this->app_base . $path;
 877                 if(isset($page) && is_int($page)) {
 878                         $url .= "/$page";
 879                 }
 880                 return $url;
 881         }
 882
 883         /**
 884          * Display entries URL.
 885          *
 886          * @since 2.2.0
 887          *
 888          * @param int $page Page ID.
 889          */
 890         function the_entries_url($page = null) {
 891                 echo $this->get_entries_url($page);
 892         }
 893
 894         /**
 895          * Retrieve categories URL.
 896          *
 897          * @since 2.2.0
 898          *
 899          * @param mixed $deprecated Optional, not used.
 900          * @return string
 901          */
 902         function get_categories_url($deprecated = '') {
 903                 return $this->app_base . $this->CATEGORIES_PATH;
 904         }
 905
 906         /**
 907          * Display category URL.
 908          *
 909          * @since 2.2.0
 910          */
 911         function the_categories_url() {
 912                 echo $this->get_categories_url();
 913         }
 914
 915         /**
 916          * Retrieve attachment URL.
 917          *
 918          * @since 2.2.0
 919          *
 920          * @param int $page Page ID.
 921          * @return string
 922          */
 923         function get_attachments_url($page = null) {
 924                 $url = $this->app_base . $this->MEDIA_PATH;
 925                 if(isset($page) && is_int($page)) {
 926                         $url .= "/$page";
 927                 }
 928                 return $url;
 929         }
 930
 931         /**
 932          * Display attachment URL.
 933          *
 934          * @since 2.2.0
 935          *
 936          * @param int $page Page ID.
 937          */
 938         function the_attachments_url($page = null) {
 939                 echo $this->get_attachments_url($page);
 940         }
 941
 942         /**
 943          * Retrieve service URL.
 944          *
 945          * @since 2.3.0
 946          *
 947          * @return string
 948          */
 949         function get_service_url() {
 950                 return $this->app_base . $this->SERVICE_PATH;
 951         }
 952
 953         /**
 954          * Retrieve entry URL.
 955          *
 956          * @since 2.7.0
 957          *
 958          * @param int $postID Post ID.
 959          * @return string
 960          */
 961         function get_entry_url($postID = null) {
 962                 if(!isset($postID)) {
 963                         global $post;
 964                         $postID = (int) $post->ID;
 965                 }
 966
 967                 $url = $this->app_base . $this->ENTRY_PATH . "/$postID";
 968
 969                 log_app('function',"get_entry_url() = $url");
 970                 return $url;
 971         }
 972
 973         /**
 974          * Display entry URL.
 975          *
 976          * @since 2.7.0
 977          *
 978          * @param int $postID Post ID.
 979          */
 980         function the_entry_url($postID = null) {
 981                 echo $this->get_entry_url($postID);
 982         }
 983
 984         /**
 985          * Retrieve media URL.
 986          *
 987          * @since 2.2.0
 988          *
 989          * @param int $postID Post ID.
 990          * @return string
 991          */
 992         function get_media_url($postID = null) {
 993                 if(!isset($postID)) {
 994                         global $post;
 995                         $postID = (int) $post->ID;
 996                 }
 997
 998                 $url = $this->app_base . $this->MEDIA_SINGLE_PATH ."/file/$postID";
 999
1000                 log_app('function',"get_media_url() = $url");
1001                 return $url;
1002         }
1003
1004         /**
1005          * Display the media URL.
1006          *
1007          * @since 2.2.0
1008          *
1009          * @param int $postID Post ID.
1010          */
1011         function the_media_url($postID = null) {
1012                 echo $this->get_media_url($postID);
1013         }
1014
1015         /**
1016          * Set the current entry to post ID.
1017          *
1018          * @since 2.2.0
1019          *
1020          * @param int $postID Post ID.
1021          */
1022         function set_current_entry($postID) {
1023                 global $entry;
1024                 log_app('function',"set_current_entry($postID)");
1025
1026                 if(!isset($postID)) {
1027                         // $this->bad_request();
1028                         $this->not_found();
1029                 }
1030
1031                 $entry = wp_get_single_post($postID,ARRAY_A);
1032
1033                 if(!isset($entry) || !isset($entry['ID']))
1034                         $this->not_found();
1035
1036                 return;
1037         }
1038
1039         /**
1040          * Display posts XML.
1041          *
1042          * @since 2.2.0
1043          *
1044          * @param int $page Optional. Page ID.
1045          * @param string $post_type Optional, default is 'post'. Post Type.
1046          */
1047         function get_posts($page = 1, $post_type = 'post') {
1048                         log_app('function',"get_posts($page, '$post_type')");
1049                         $feed = $this->get_feed($page, $post_type);
1050                         $this->output($feed);
1051         }
1052
1053         /**
1054          * Display attachment XML.
1055          *
1056          * @since 2.2.0
1057          *
1058          * @param int $page Page ID.
1059          * @param string $post_type Optional, default is 'attachment'. Post type.
1060          */
1061         function get_attachments($page = 1, $post_type = 'attachment') {
1062                 log_app('function',"get_attachments($page, '$post_type')");
1063                 $GLOBALS['post_type'] = $post_type;
1064                 $feed = $this->get_feed($page, $post_type);
1065                 $this->output($feed);
1066         }
1067
1068         /**
1069          * Retrieve feed XML.
1070          *
1071          * @since 2.2.0
1072          *
1073          * @param int $page Page ID.
1074          * @param string $post_type Optional, default is post. Post type.
1075          * @return string
1076          */
1077         function get_feed($page = 1, $post_type = 'post') {
1078                 global $post, $wp, $wp_query, $posts, $wpdb, $blog_id;
1079                 log_app('function',"get_feed($page, '$post_type')");
1080                 ob_start();
1081
1082                 $this->ENTRY_PATH = $post_type;
1083
1084                 if(!isset($page)) {
1085                         $page = 1;
1086                 }
1087                 $page = (int) $page;
1088
1089                 $count = get_option('posts_per_rss');
1090
1091                 wp('posts_per_page=' . $count . '&offset=' . ($count * ($page-1) . '&orderby=modified'));
1092
1093                 $post = $GLOBALS['post'];
1094                 $posts = $GLOBALS['posts'];
1095                 $wp = $GLOBALS['wp'];
1096                 $wp_query = $GLOBALS['wp_query'];
1097                 $wpdb = $GLOBALS['wpdb'];
1098                 $blog_id = (int) $GLOBALS['blog_id'];
1099                 log_app('function',"query_posts(# " . print_r($wp_query, true) . "#)");
1100
1101                 log_app('function',"total_count(# $wp_query->max_num_pages #)");
1102                 $last_page = $wp_query->max_num_pages;
1103                 $next_page = (($page + 1) > $last_page) ? NULL : $page + 1;
1104                 $prev_page = ($page - 1) < 1 ? NULL : $page - 1;
1105                 $last_page = ((int)$last_page == 1 || (int)$last_page == 0) ? NULL : (int) $last_page;
1106                 $self_page = $page > 1 ? $page : NULL;
1107 ?><feed xmlns="<?php echo $this->ATOM_NS ?>" xmlns:app="<?php echo $this->ATOMPUB_NS ?>" xml:lang="<?php echo get_option('rss_language'); ?>">
1108 <id><?php $this->the_entries_url() ?></id>
1109 <updated><?php echo mysql2date('Y-m-d\TH:i:s\Z', get_lastpostmodified('GMT'), false); ?></updated>
1110 <title type="text"><?php bloginfo_rss('name') ?></title>
1111 <subtitle type="text"><?php bloginfo_rss("description") ?></subtitle>
1112 <link rel="first" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url() ?>" />
1113 <?php if(isset($prev_page)): ?>
1114 <link rel="previous" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($prev_page) ?>" />
1115 <?php endif; ?>
1116 <?php if(isset($next_page)): ?>
1117 <link rel="next" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($next_page) ?>" />
1118 <?php endif; ?>
1119 <link rel="last" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($last_page) ?>" />
1120 <link rel="self" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($self_page) ?>" />
1121 <rights type="text">Copyright <?php echo date('Y'); ?></rights>
1122 <?php the_generator( 'atom' ); ?>
1123 <?php if ( have_posts() ) {
1124                         while ( have_posts() ) {
1125                                 the_post();
1126                                 $this->echo_entry();
1127                         }
1128                 }
1129 ?></feed>
1130 <?php
1131                 $feed = ob_get_contents();
1132                 ob_end_clean();
1133                 return $feed;
1134         }
1135
1136         /**
1137          * Display entry XML.
1138          *
1139          * @since 2.2.0
1140          *
1141          * @param int $postID Post ID.
1142          * @param string $post_type Optional, default is post. Post type.
1143          * @return string.
1144          */
1145         function get_entry($postID, $post_type = 'post') {
1146                 log_app('function',"get_entry($postID, '$post_type')");
1147                 ob_start();
1148                 switch($post_type) {
1149                         case 'post':
1150                                 $varname = 'p';
1151                                 break;
1152                         case 'attachment':
1153                                 $this->ENTRY_PATH = 'attachment';
1154                                 $varname = 'attachment_id';
1155                                 break;
1156                 }
1157                 query_posts($varname . '=' . $postID);
1158                 if ( have_posts() ) {
1159                         while ( have_posts() ) {
1160                                 the_post();
1161                                 $this->echo_entry();
1162                                 log_app('$post',print_r($GLOBALS['post'],true));
1163                                 $entry = ob_get_contents();
1164                                 break;
1165                         }
1166                 }
1167                 ob_end_clean();
1168
1169                 log_app('get_entry returning:',$entry);
1170                 return $entry;
1171         }
1172
1173         /**
1174          * Display post content XML.
1175          *
1176          * @since 2.3.0
1177          */
1178         function echo_entry() { ?>
1179 <entry xmlns="<?php echo $this->ATOM_NS ?>"
1180        xmlns:app="<?php echo $this->ATOMPUB_NS ?>" xml:lang="<?php echo get_option('rss_language'); ?>">
1181         <id><?php the_guid($GLOBALS['post']->ID); ?></id>
1182 <?php list($content_type, $content) = prep_atom_text_construct(get_the_title()); ?>
1183         <title type="<?php echo $content_type ?>"><?php echo $content ?></title>
1184         <updated><?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?></updated>
1185         <published><?php echo get_post_time('Y-m-d\TH:i:s\Z', true); ?></published>
1186         <app:edited><?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?></app:edited>
1187         <app:control>
1188                 <app:draft><?php echo ($GLOBALS['post']->post_status == 'draft' ? 'yes' : 'no') ?></app:draft>
1189         </app:control>
1190         <author>
1191                 <name><?php the_author()?></name>
1192 <?php if ( get_the_author_meta('url') && get_the_author_meta('url') != 'http://' ) { ?>
1193                 <uri><?php the_author_meta('url') ?></uri>
1194 <?php } ?>
1195         </author>
1196 <?php if($GLOBALS['post']->post_type == 'attachment') { ?>
1197         <link rel="edit-media" href="<?php $this->the_media_url() ?>" />
1198         <content type="<?php echo $GLOBALS['post']->post_mime_type ?>" src="<?php the_guid(); ?>"/>
1199 <?php } else { ?>
1200         <link href="<?php the_permalink_rss() ?>" />
1201 <?php if ( strlen( $GLOBALS['post']->post_content ) ) :
1202 list($content_type, $content) = prep_atom_text_construct(get_the_content()); ?>
1203         <content type="<?php echo $content_type ?>"><?php echo $content ?></content>
1204 <?php endif; ?>
1205 <?php } ?>
1206         <link rel="edit" href="<?php $this->the_entry_url() ?>" />
1207         <?php the_category_rss( 'atom' ); ?>
1208 <?php list($content_type, $content) = prep_atom_text_construct(get_the_excerpt()); ?>
1209         <summary type="<?php echo $content_type ?>"><?php echo $content ?></summary>
1210 </entry>
1211 <?php }
1212
1213         /**
1214          * Set 'OK' (200) status header.
1215          *
1216          * @since 2.2.0
1217          */
1218         function ok() {
1219                 log_app('Status','200: OK');
1220                 header('Content-Type: text/plain');
1221                 status_header('200');
1222                 exit;
1223         }
1224
1225         /**
1226          * Set 'No Content' (204) status header.
1227          *
1228          * @since 2.2.0
1229          */
1230         function no_content() {
1231                 log_app('Status','204: No Content');
1232                 header('Content-Type: text/plain');
1233                 status_header('204');
1234                 echo "Deleted.";
1235                 exit;
1236         }
1237
1238         /**
1239          * Display 'Internal Server Error' (500) status header.
1240          *
1241          * @since 2.2.0
1242          *
1243          * @param string $msg Optional. Status string.
1244          */
1245         function internal_error($msg = 'Internal Server Error') {
1246                 log_app('Status','500: Server Error');
1247                 header('Content-Type: text/plain');
1248                 status_header('500');
1249                 echo $msg;
1250                 exit;
1251         }
1252
1253         /**
1254          * Set 'Bad Request' (400) status header.
1255          *
1256          * @since 2.2.0
1257          */
1258         function bad_request() {
1259                 log_app('Status','400: Bad Request');
1260                 header('Content-Type: text/plain');
1261                 status_header('400');
1262                 exit;
1263         }
1264
1265         /**
1266          * Set 'Length Required' (411) status header.
1267          *
1268          * @since 2.2.0
1269          */
1270         function length_required() {
1271                 log_app('Status','411: Length Required');
1272                 header("HTTP/1.1 411 Length Required");
1273                 header('Content-Type: text/plain');
1274                 status_header('411');
1275                 exit;
1276         }
1277
1278         /**
1279          * Set 'Unsupported Media Type' (415) status header.
1280          *
1281          * @since 2.2.0
1282          */
1283         function invalid_media() {
1284                 log_app('Status','415: Unsupported Media Type');
1285                 header("HTTP/1.1 415 Unsupported Media Type");
1286                 header('Content-Type: text/plain');
1287                 exit;
1288         }
1289
1290         /**
1291          * Set 'Forbidden' (403) status header.
1292          *
1293          * @since 2.6.0
1294          */
1295         function forbidden($reason='') {
1296                 log_app('Status','403: Forbidden');
1297                 header('Content-Type: text/plain');
1298                 status_header('403');
1299                 echo $reason;
1300                 exit;
1301         }
1302
1303         /**
1304          * Set 'Not Found' (404) status header.
1305          *
1306          * @since 2.2.0
1307          */
1308         function not_found() {
1309                 log_app('Status','404: Not Found');
1310                 header('Content-Type: text/plain');
1311                 status_header('404');
1312                 exit;
1313         }
1314
1315         /**
1316          * Set 'Not Allowed' (405) status header.
1317          *
1318          * @since 2.2.0
1319          */
1320         function not_allowed($allow) {
1321                 log_app('Status','405: Not Allowed');
1322                 header('Allow: ' . join(',', $allow));
1323                 status_header('405');
1324                 exit;
1325         }
1326
1327         /**
1328          * Display Redirect (302) content and set status headers.
1329          *
1330          * @since 2.3.0
1331          */
1332         function redirect($url) {
1333
1334                 log_app('Status','302: Redirect');
1335                 $escaped_url = esc_attr($url);
1336                 $content = <<<EOD
1337 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
1338 <html>
1339   <head>
1340     <title>302 Found</title>
1341   </head>
1342 <body>
1343   <h1>Found</h1>
1344   <p>The document has moved <a href="$escaped_url">here</a>.</p>
1345   </body>
1346 </html>
1347
1348 EOD;
1349                 header('HTTP/1.1 302 Moved');
1350                 header('Content-Type: text/html');
1351                 header('Location: ' . $url);
1352                 echo $content;
1353                 exit;
1354
1355         }
1356
1357         /**
1358          * Set 'Client Error' (400) status header.
1359          *
1360          * @since 2.2.0
1361          */
1362         function client_error($msg = 'Client Error') {
1363                 log_app('Status','400: Client Error');
1364                 header('Content-Type: text/plain');
1365                 status_header('400');
1366                 exit;
1367         }
1368
1369         /**
1370          * Set created status headers (201).
1371          *
1372          * Sets the 'content-type', 'content-location', and 'location'.
1373          *
1374          * @since 2.2.0
1375          */
1376         function created($post_ID, $content, $post_type = 'post') {
1377                 log_app('created()::$post_ID',"$post_ID, $post_type");
1378                 $edit = $this->get_entry_url($post_ID);
1379                 switch($post_type) {
1380                         case 'post':
1381                                 $ctloc = $this->get_entry_url($post_ID);
1382                                 break;
1383                         case 'attachment':
1384                                 $edit = $this->app_base . "attachments/$post_ID";
1385                                 break;
1386                 }
1387                 header("Content-Type: $this->ATOM_CONTENT_TYPE");
1388                 if(isset($ctloc))
1389                         header('Content-Location: ' . $ctloc);
1390                 header('Location: ' . $edit);
1391                 status_header('201');
1392                 echo $content;
1393                 exit;
1394         }
1395
1396         /**
1397          * Set 'Auth Required' (401) headers.
1398          *
1399          * @since 2.2.0
1400          *
1401          * @param string $msg Status header content and HTML content.
1402          */
1403         function auth_required($msg) {
1404                 log_app('Status','401: Auth Required');
1405                 nocache_headers();
1406                 header('WWW-Authenticate: Basic realm="WordPress Atom Protocol"');
1407                 header("HTTP/1.1 401 $msg");
1408                 header('Status: 401 ' . $msg);
1409                 header('Content-Type: text/html');
1410                 $content = <<<EOD
1411 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
1412 <html>
1413   <head>
1414     <title>401 Unauthorized</title>
1415   </head>
1416 <body>
1417     <h1>401 Unauthorized</h1>
1418     <p>$msg</p>
1419   </body>
1420 </html>
1421
1422 EOD;
1423                 echo $content;
1424                 exit;
1425         }
1426
1427         /**
1428          * Display XML and set headers with content type.
1429          *
1430          * @since 2.2.0
1431          *
1432          * @param string $xml Display feed content.
1433          * @param string $ctype Optional, default is 'atom+xml'. Feed content type.
1434          */
1435         function output($xml, $ctype = 'application/atom+xml') {
1436                         status_header('200');
1437                         $xml = '<?xml version="1.0" encoding="' . strtolower(get_option('blog_charset')) . '"?>'."\n".$xml;
1438                         header('Connection: close');
1439                         header('Content-Length: '. strlen($xml));
1440                         header('Content-Type: ' . $ctype);
1441                         header('Content-Disposition: attachment; filename=atom.xml');
1442                         header('Date: '. date('r'));
1443                         if($this->do_output)
1444                                 echo $xml;
1445                         log_app('function', "output:\n$xml");
1446                         exit;
1447         }
1448
1449         /**
1450          * Sanitize content for database usage.
1451          *
1452          * @since 2.2.0
1453          *
1454          * @param array $array Sanitize array and multi-dimension array.
1455          */
1456         function escape(&$array) {
1457                 global $wpdb;
1458
1459                 foreach ($array as $k => $v) {
1460                                 if (is_array($v)) {
1461                                                 $this->escape($array[$k]);
1462                                 } else if (is_object($v)) {
1463                                                 //skip
1464                                 } else {
1465                                                 $array[$k] = $wpdb->escape($v);
1466                                 }
1467                 }
1468         }
1469
1470         /**
1471          * Access credential through various methods and perform login.
1472          *
1473          * @since 2.2.0
1474          *
1475          * @return bool
1476          */
1477         function authenticate() {
1478                 log_app("authenticate()",print_r($_ENV, true));
1479
1480                 // if using mod_rewrite/ENV hack
1481                 // http://www.besthostratings.com/articles/http-auth-php-cgi.html
1482                 if(isset($_SERVER['HTTP_AUTHORIZATION'])) {
1483                         list($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']) =
1484                                 explode(':', base64_decode(substr($_SERVER['HTTP_AUTHORIZATION'], 6)));
1485                 } else if (isset($_SERVER['REDIRECT_REMOTE_USER'])) {
1486                         // Workaround for setups that do not forward HTTP_AUTHORIZATION
1487                         // See http://trac.wordpress.org/ticket/7361
1488                         list($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']) =
1489                                 explode(':', base64_decode(substr($_SERVER['REDIRECT_REMOTE_USER'], 6)));
1490                 }
1491
1492                 // If Basic Auth is working...
1493                 if(isset($_SERVER['PHP_AUTH_USER']) && isset($_SERVER['PHP_AUTH_PW'])) {
1494                         log_app("Basic Auth",$_SERVER['PHP_AUTH_USER']);
1495                 }
1496
1497                 $user = wp_authenticate($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']);
1498                 if ( $user && !is_wp_error($user) ) {
1499                         wp_set_current_user($user->ID);
1500                         log_app("authenticate()", $user->user_login);
1501                         return true;
1502                 }
1503
1504                 return false;
1505         }
1506
1507         /**
1508          * Retrieve accepted content types.
1509          *
1510          * @since 2.2.0
1511          *
1512          * @param array $types Optional. Content Types.
1513          * @return string
1514          */
1515         function get_accepted_content_type($types = null) {
1516
1517                 if(!isset($types)) {
1518                         $types = $this->media_content_types;
1519                 }
1520
1521                 if(!isset($_SERVER['CONTENT_LENGTH']) || !isset($_SERVER['CONTENT_TYPE'])) {
1522                         $this->length_required();
1523                 }
1524
1525                 $type = $_SERVER['CONTENT_TYPE'];
1526                 list($type,$subtype) = explode('/',$type);
1527                 list($subtype) = explode(";",$subtype); // strip MIME parameters
1528                 log_app("get_accepted_content_type", "type=$type, subtype=$subtype");
1529
1530                 foreach($types as $t) {
1531                         list($acceptedType,$acceptedSubtype) = explode('/',$t);
1532                         if($acceptedType == '*' || $acceptedType == $type) {
1533                                 if($acceptedSubtype == '*' || $acceptedSubtype == $subtype)
1534                                         return $type . "/" . $subtype;
1535                         }
1536                 }
1537
1538                 $this->invalid_media();
1539         }
1540
1541         /**
1542          * Process conditionals for posts.
1543          *
1544          * @since 2.2.0
1545          */
1546         function process_conditionals() {
1547
1548                 if(empty($this->params)) return;
1549                 if($_SERVER['REQUEST_METHOD'] == 'DELETE') return;
1550
1551                 switch($this->params[0]) {
1552                         case $this->ENTRY_PATH:
1553                                 global $post;
1554                                 $post = wp_get_single_post($this->params[1]);
1555                                 $wp_last_modified = get_post_modified_time('D, d M Y H:i:s', true);
1556                                 $post = NULL;
1557                                 break;
1558                         case $this->ENTRIES_PATH:
1559                                 $wp_last_modified = mysql2date('D, d M Y H:i:s', get_lastpostmodified('GMT'), 0).' GMT';
1560                                 break;
1561                         default:
1562                                 return;
1563                 }
1564                 $wp_etag = md5($wp_last_modified);
1565                 @header("Last-Modified: $wp_last_modified");
1566                 @header("ETag: $wp_etag");
1567
1568                 // Support for Conditional GET
1569                 if (isset($_SERVER['HTTP_IF_NONE_MATCH']))
1570                         $client_etag = stripslashes($_SERVER['HTTP_IF_NONE_MATCH']);
1571                 else
1572                         $client_etag = false;
1573
1574                 $client_last_modified = trim( $_SERVER['HTTP_IF_MODIFIED_SINCE']);
1575                 // If string is empty, return 0. If not, attempt to parse into a timestamp
1576                 $client_modified_timestamp = $client_last_modified ? strtotime($client_last_modified) : 0;
1577
1578                 // Make a timestamp for our most recent modification...
1579                 $wp_modified_timestamp = strtotime($wp_last_modified);
1580
1581                 if ( ($client_last_modified && $client_etag) ?
1582                 (($client_modified_timestamp >= $wp_modified_timestamp) && ($client_etag == $wp_etag)) :
1583                 (($client_modified_timestamp >= $wp_modified_timestamp) || ($client_etag == $wp_etag)) ) {
1584                         status_header( 304 );
1585                         exit;
1586                 }
1587         }
1588
1589         /**
1590          * Convert RFC3339 time string to timestamp.
1591          *
1592          * @since 2.3.0
1593          *
1594          * @param string $str String to time.
1595          * @return bool|int false if format is incorrect.
1596          */
1597         function rfc3339_str2time($str) {
1598
1599                 $match = false;
1600                 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, $match))
1601                         return false;
1602
1603                 if($match[3] == 'Z')
1604                         $match[3] == '+0000';
1605
1606                 return strtotime($match[1] . " " . $match[2] . " " . $match[3]);
1607         }
1608
1609         /**
1610          * Retrieve published time to display in XML.
1611          *
1612          * @since 2.3.0
1613          *
1614          * @param string $published Time string.
1615          * @return string
1616          */
1617         function get_publish_time($published) {
1618
1619                 $pubtime = $this->rfc3339_str2time($published);
1620
1621                 if(!$pubtime) {
1622                         return array(current_time('mysql'),current_time('mysql',1));
1623                 } else {
1624                         return array(date("Y-m-d H:i:s", $pubtime), gmdate("Y-m-d H:i:s", $pubtime));
1625                 }
1626         }
1627
1628 }
1629
1630 /**
1631  * AtomServer
1632  * @var AtomServer
1633  * @global object $server
1634  */
1635 $server = new AtomServer();
1636 $server->handle_request();
1637
1638 ?>