Skip to content
This repository

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

file 1638 lines (1399 sloc) 40.543 kb
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638
<?php
/**
* Atom Publishing Protocol support for WordPress
*
* @author Original by Elias Torres <http://torrez.us/archives/2006/08/31/491/>
* @author Modified by Dougal Campbell <http://dougal.gunters.org/>
* @version 1.0.5-dc
*/

/**
* WordPress is handling an Atom Publishing Protocol request.
*
* @var bool
*/
define('APP_REQUEST', true);

/** Set up WordPress environment */
require_once('./wp-load.php');

/** Post Template API */
require_once(ABSPATH . WPINC . '/post-template.php');

/** Atom Publishing Protocol Class */
require_once(ABSPATH . WPINC . '/atomlib.php');

/** Feed Handling API */
require_once(ABSPATH . WPINC . '/feed.php');

/** Admin Image API for metadata updating */
require_once(ABSPATH . '/wp-admin/includes/image.php');

$_SERVER['PATH_INFO'] = preg_replace( '/.*\/wp-app\.php/', '', $_SERVER['REQUEST_URI'] );

/**
* Whether to enable Atom Publishing Protocol Logging.
*
* @name app_logging
* @var int|bool
*/
$app_logging = 0;

/**
* Whether to always authenticate user. Permanently set to true.
*
* @name always_authenticate
* @var int|bool
* @todo Should be an option somewhere
*/
$always_authenticate = 1;

/**
* Writes logging info to a file.
*
* @since 2.2.0
* @uses $app_logging
* @package WordPress
* @subpackage Logging
*
* @param string $label Type of logging
* @param string $msg Information describing logging reason.
*/
function log_app($label,$msg) {
global $app_logging;
if ($app_logging) {
$fp = fopen( 'wp-app.log', 'a+');
$date = gmdate( 'Y-m-d H:i:s' );
fwrite($fp, "\n\n$date - $label\n$msg\n");
fclose($fp);
}
}

if ( !function_exists('wp_set_current_user') ) :
/**
* @ignore
*/
function wp_set_current_user($id, $name = '') {
global $current_user;

if ( isset($current_user) && ($id == $current_user->ID) )
return $current_user;

$current_user = new WP_User($id, $name);

return $current_user;
}
endif;

/**
* Filter to add more post statuses.
*
* @since 2.2.0
*
* @param string $where SQL statement to filter.
* @return string Filtered SQL statement with added post_status for where clause.
*/
function wa_posts_where_include_drafts_filter($where) {
$where = str_replace("post_status = 'publish'","post_status = 'publish' OR post_status = 'future' OR post_status = 'draft' OR post_status = 'inherit'", $where);
return $where;

}
add_filter('posts_where', 'wa_posts_where_include_drafts_filter');

/**
* WordPress AtomPub API implementation.
*
* @package WordPress
* @subpackage Publishing
* @since 2.2.0
*/
class AtomServer {

/**
* ATOM content type.
*
* @since 2.2.0
* @var string
*/
var $ATOM_CONTENT_TYPE = 'application/atom+xml';

/**
* Categories ATOM content type.
*
* @since 2.2.0
* @var string
*/
var $CATEGORIES_CONTENT_TYPE = 'application/atomcat+xml';

/**
* Service ATOM content type.
*
* @since 2.3.0
* @var string
*/
var $SERVICE_CONTENT_TYPE = 'application/atomsvc+xml';

/**
* ATOM XML namespace.
*
* @since 2.3.0
* @var string
*/
var $ATOM_NS = 'http://www.w3.org/2005/Atom';

/**
* ATOMPUB XML namespace.
*
* @since 2.3.0
* @var string
*/
var $ATOMPUB_NS = 'http://www.w3.org/2007/app';

/**
* Entries path.
*
* @since 2.2.0
* @var string
*/
var $ENTRIES_PATH = "posts";

/**
* Categories path.
*
* @since 2.2.0
* @var string
*/
var $CATEGORIES_PATH = "categories";

/**
* Media path.
*
* @since 2.2.0
* @var string
*/
var $MEDIA_PATH = "attachments";

/**
* Entry path.
*
* @since 2.2.0
* @var string
*/
var $ENTRY_PATH = "post";

/**
* Service path.
*
* @since 2.2.0
* @var string
*/
var $SERVICE_PATH = "service";

/**
* Media single path.
*
* @since 2.2.0
* @var string
*/
var $MEDIA_SINGLE_PATH = "attachment";

/**
* ATOMPUB parameters.
*
* @since 2.2.0
* @var array
*/
var $params = array();

/**
* Supported ATOMPUB media types.
*
* @since 2.3.0
* @var array
*/
var $media_content_types = array('image/*','audio/*','video/*');

/**
* ATOMPUB content type(s).
*
* @since 2.2.0
* @var array
*/
var $atom_content_types = array('application/atom+xml');

/**
* ATOMPUB methods.
*
* @since 2.2.0
* @var unknown_type
*/
var $selectors = array();

/**
* Whether to do output.
*
* Support for head.
*
* @since 2.2.0
* @var bool
*/
var $do_output = true;

/**
* PHP4 constructor - Sets up object properties.
*
* @since 2.2.0
* @return AtomServer
*/
function AtomServer() {

$this->script_name = array_pop(explode('/',$_SERVER['SCRIPT_NAME']));
$this->app_base = get_bloginfo('url') . '/' . $this->script_name . '/';
if ( isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) == 'on' ) {
$this->app_base = preg_replace( '/^http:\/\//', 'https://', $this->app_base );
}

$this->selectors = array(
'@/service$@' =>
array('GET' => 'get_service'),
'@/categories$@' =>
array('GET' => 'get_categories_xml'),
'@/post/(\d+)$@' =>
array('GET' => 'get_post',
'PUT' => 'put_post',
'DELETE' => 'delete_post'),
'@/posts/?(\d+)?$@' =>
array('GET' => 'get_posts',
'POST' => 'create_post'),
'@/attachments/?(\d+)?$@' =>
array('GET' => 'get_attachment',
'POST' => 'create_attachment'),
'@/attachment/file/(\d+)$@' =>
array('GET' => 'get_file',
'PUT' => 'put_file',
'DELETE' => 'delete_file'),
'@/attachment/(\d+)$@' =>
array('GET' => 'get_attachment',
'PUT' => 'put_attachment',
'DELETE' => 'delete_attachment'),
);
}

/**
* Handle ATOMPUB request.
*
* @since 2.2.0
*/
function handle_request() {
global $always_authenticate;

if( !empty( $_SERVER['ORIG_PATH_INFO'] ) )
$path = $_SERVER['ORIG_PATH_INFO'];
else
$path = $_SERVER['PATH_INFO'];

$method = $_SERVER['REQUEST_METHOD'];

log_app('REQUEST',"$method $path\n================");

$this->process_conditionals();
//$this->process_conditionals();

// exception case for HEAD (treat exactly as GET, but don't output)
if($method == 'HEAD') {
$this->do_output = false;
$method = 'GET';
}

// redirect to /service in case no path is found.
if(strlen($path) == 0 || $path == '/') {
$this->redirect($this->get_service_url());
}

// check to see if AtomPub is enabled
if( !get_option( 'enable_app' ) )
$this->forbidden( sprintf( __( 'AtomPub services are disabled on this blog. An admin user can enable them at %s' ), admin_url('options-writing.php') ) );

// dispatch
foreach($this->selectors as $regex => $funcs) {
if(preg_match($regex, $path, $matches)) {
if(isset($funcs[$method])) {

// authenticate regardless of the operation and set the current
// user. each handler will decide if auth is required or not.
if(!$this->authenticate()) {
if ($always_authenticate) {
$this->auth_required('Credentials required.');
}
}

array_shift($matches);
call_user_func_array(array(&$this,$funcs[$method]), $matches);
exit();
} else {
// only allow what we have handlers for...
$this->not_allowed(array_keys($funcs));
}
}
}

// oops, nothing found
$this->not_found();
}

/**
* Retrieve XML for ATOMPUB service.
*
* @since 2.2.0
*/
function get_service() {
log_app('function','get_service()');

if( !current_user_can( 'edit_posts' ) )
$this->auth_required( __( 'Sorry, you do not have the right to access this blog.' ) );

$entries_url = esc_attr($this->get_entries_url());
$categories_url = esc_attr($this->get_categories_url());
$media_url = esc_attr($this->get_attachments_url());
foreach ($this->media_content_types as $med) {
$accepted_media_types = $accepted_media_types . "<accept>" . $med . "</accept>";
}
$atom_prefix="atom";
$atom_blogname=get_bloginfo('name');
$service_doc = <<<EOD
<service xmlns="$this->ATOMPUB_NS" xmlns:$atom_prefix="$this->ATOM_NS">
  <workspace>
    <$atom_prefix:title>$atom_blogname Workspace</$atom_prefix:title>
    <collection href="$entries_url">
      <$atom_prefix:title>$atom_blogname Posts</$atom_prefix:title>
      <accept>$this->ATOM_CONTENT_TYPE;type=entry</accept>
      <categories href="$categories_url" />
    </collection>
    <collection href="$media_url">
      <$atom_prefix:title>$atom_blogname Media</$atom_prefix:title>
      $accepted_media_types
    </collection>
  </workspace>
</service>

EOD;

$this->output($service_doc, $this->SERVICE_CONTENT_TYPE);
}

/**
* Retrieve categories list in XML format.
*
* @since 2.2.0
*/
function get_categories_xml() {
log_app('function','get_categories_xml()');

if( !current_user_can( 'edit_posts' ) )
$this->auth_required( __( 'Sorry, you do not have the right to access this blog.' ) );

$home = esc_attr(get_bloginfo_rss('home'));

$categories = "";
$cats = get_categories("hierarchical=0&hide_empty=0");
foreach ((array) $cats as $cat) {
$categories .= " <category term=\"" . esc_attr($cat->name) . "\" />\n";
}
$output = <<<EOD
<app:categories xmlns:app="$this->ATOMPUB_NS"
xmlns="$this->ATOM_NS"
fixed="yes" scheme="$home">
$categories
</app:categories>
EOD;
$this->output($output, $this->CATEGORIES_CONTENT_TYPE);
}

/**
* Create new post.
*
* @since 2.2.0
*/
function create_post() {
global $blog_id, $user_ID;
$this->get_accepted_content_type($this->atom_content_types);

$parser = new AtomParser();
if(!$parser->parse()) {
$this->client_error();
}

$entry = array_pop($parser->feed->entries);

log_app('Received entry:', print_r($entry,true));

$catnames = array();
foreach($entry->categories as $cat)
array_push($catnames, $cat["term"]);

$wp_cats = get_categories(array('hide_empty' => false));

$post_category = array();

foreach($wp_cats as $cat) {
if(in_array($cat->name, $catnames))
array_push($post_category, $cat->term_id);
}

$publish = (isset($entry->draft) && trim($entry->draft) == 'yes') ? false : true;

$cap = ($publish) ? 'publish_posts' : 'edit_posts';

if(!current_user_can($cap))
$this->auth_required(__('Sorry, you do not have the right to edit/publish new posts.'));

$blog_ID = (int ) $blog_id;
$post_status = ($publish) ? 'publish' : 'draft';
$post_author = (int) $user_ID;
$post_title = $entry->title[1];
$post_content = $entry->content[1];
$post_excerpt = $entry->summary[1];
$pubtimes = $this->get_publish_time($entry->published);
$post_date = $pubtimes[0];
$post_date_gmt = $pubtimes[1];

if ( isset( $_SERVER['HTTP_SLUG'] ) )
$post_name = $_SERVER['HTTP_SLUG'];

$post_data = compact('blog_ID', 'post_author', 'post_date', 'post_date_gmt', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_name');

$this->escape($post_data);
log_app('Inserting Post. Data:', print_r($post_data,true));

$postID = wp_insert_post($post_data);
if ( is_wp_error( $postID ) )
$this->internal_error($postID->get_error_message());

if (!$postID)
$this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));

// getting warning here about unable to set headers
// because something in the cache is printing to the buffer
// could we clean up wp_set_post_categories or cache to not print
// this could affect our ability to send back the right headers
@wp_set_post_categories($postID, $post_category);

do_action( 'atompub_create_post', $postID, $entry );

$output = $this->get_entry($postID);

log_app('function',"create_post($postID)");
$this->created($postID, $output);
}

/**
* Retrieve post.
*
* @since 2.2.0
*
* @param int $postID Post ID.
*/
function get_post($postID) {
global $entry;

if( !current_user_can( 'edit_post', $postID ) )
$this->auth_required( __( 'Sorry, you do not have the right to access this post.' ) );

$this->set_current_entry($postID);
$output = $this->get_entry($postID);
log_app('function',"get_post($postID)");
$this->output($output);

}

/**
* Update post.
*
* @since 2.2.0
*
* @param int $postID Post ID.
*/
function put_post($postID) {
// checked for valid content-types (atom+xml)
// quick check and exit
$this->get_accepted_content_type($this->atom_content_types);

$parser = new AtomParser();
if(!$parser->parse()) {
$this->bad_request();
}

$parsed = array_pop($parser->feed->entries);

log_app('Received UPDATED entry:', print_r($parsed,true));

// check for not found
global $entry;
$this->set_current_entry($postID);

if(!current_user_can('edit_post', $entry['ID']))
$this->auth_required(__('Sorry, you do not have the right to edit this post.'));

$publish = (isset($parsed->draft) && trim($parsed->draft) == 'yes') ? false : true;
$post_status = ($publish) ? 'publish' : 'draft';

extract($entry);

$post_title = $parsed->title[1];
$post_content = $parsed->content[1];
$post_excerpt = $parsed->summary[1];
$pubtimes = $this->get_publish_time($entry->published);
$post_date = $pubtimes[0];
$post_date_gmt = $pubtimes[1];
$pubtimes = $this->get_publish_time($parsed->updated);
$post_modified = $pubtimes[0];
$post_modified_gmt = $pubtimes[1];

$postdata = compact('ID', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt');
$this->escape($postdata);

$result = wp_update_post($postdata);

if (!$result) {
$this->internal_error(__('For some strange yet very annoying reason, this post could not be edited.'));
}

do_action( 'atompub_put_post', $ID, $parsed );

log_app('function',"put_post($postID)");
$this->ok();
}

/**
* Remove post.
*
* @since 2.2.0
*
* @param int $postID Post ID.
*/
function delete_post($postID) {

// check for not found
global $entry;
$this->set_current_entry($postID);

if(!current_user_can('edit_post', $postID)) {
$this->auth_required(__('Sorry, you do not have the right to delete this post.'));
}

if ($entry['post_type'] == 'attachment') {
$this->delete_attachment($postID);
} else {
$result = wp_delete_post($postID);

if (!$result) {
$this->internal_error(__('For some strange yet very annoying reason, this post could not be deleted.'));
}

log_app('function',"delete_post($postID)");
$this->ok();
}

}

/**
* Retrieve attachment.
*
* @since 2.2.0
*
* @param int $postID Optional. Post ID.
*/
function get_attachment($postID = null) {
if( !current_user_can( 'upload_files' ) )
$this->auth_required( __( 'Sorry, you do not have permission to upload files.' ) );

if (!isset($postID)) {
$this->get_attachments();
} else {
$this->set_current_entry($postID);
$output = $this->get_entry($postID, 'attachment');
log_app('function',"get_attachment($postID)");
$this->output($output);
}
}

/**
* Create new attachment.
*
* @since 2.2.0
*/
function create_attachment() {

$type = $this->get_accepted_content_type();

if(!current_user_can('upload_files'))
$this->auth_required(__('You do not have permission to upload files.'));

$fp = fopen("php://input", "rb");
$bits = null;
while(!feof($fp)) {
$bits .= fread($fp, 4096);
}
fclose($fp);

$slug = '';
if ( isset( $_SERVER['HTTP_SLUG'] ) )
$slug = sanitize_file_name( $_SERVER['HTTP_SLUG'] );
elseif ( isset( $_SERVER['HTTP_TITLE'] ) )
$slug = sanitize_file_name( $_SERVER['HTTP_TITLE'] );
elseif ( empty( $slug ) ) // just make a random name
$slug = substr( md5( uniqid( microtime() ) ), 0, 7);
$ext = preg_replace( '|.*/([a-z0-9]+)|', '$1', $_SERVER['CONTENT_TYPE'] );
$slug = "$slug.$ext";
$file = wp_upload_bits( $slug, NULL, $bits);

log_app('wp_upload_bits returns:',print_r($file,true));

$url = $file['url'];
$file = $file['file'];

do_action('wp_create_file_in_uploads', $file); // replicate

// Construct the attachment array
$attachment = array(
'post_title' => $slug,
'post_content' => $slug,
'post_status' => 'attachment',
'post_parent' => 0,
'post_mime_type' => $type,
'guid' => $url
);

// Save the data
$postID = wp_insert_attachment($attachment, $file);

if (!$postID)
$this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));

$output = $this->get_entry($postID, 'attachment');

$this->created($postID, $output, 'attachment');
log_app('function',"create_attachment($postID)");
}

/**
* Update attachment.
*
* @since 2.2.0
*
* @param int $postID Post ID.
*/
function put_attachment($postID) {
// checked for valid content-types (atom+xml)
// quick check and exit
$this->get_accepted_content_type($this->atom_content_types);

$parser = new AtomParser();
if(!$parser->parse()) {
$this->bad_request();
}

$parsed = array_pop($parser->feed->entries);

// check for not found
global $entry;
$this->set_current_entry($postID);

if(!current_user_can('edit_post', $entry['ID']))
$this->auth_required(__('Sorry, you do not have the right to edit this post.'));

extract($entry);

$post_title = $parsed->title[1];
$post_content = $parsed->summary[1];
$pubtimes = $this->get_publish_time($parsed->updated);
$post_modified = $pubtimes[0];
$post_modified_gmt = $pubtimes[1];

$postdata = compact('ID', 'post_content', 'post_title', 'post_category', 'post_status', 'post_excerpt', 'post_modified', 'post_modified_gmt');
$this->escape($postdata);

$result = wp_update_post($postdata);

if (!$result) {
$this->internal_error(__('For some strange yet very annoying reason, this post could not be edited.'));
}

log_app('function',"put_attachment($postID)");
$this->ok();
}

/**
* Remove attachment.
*
* @since 2.2.0
*
* @param int $postID Post ID.
*/
function delete_attachment($postID) {
log_app('function',"delete_attachment($postID). File '$location' deleted.");

// check for not found
global $entry;
$this->set_current_entry($postID);

if(!current_user_can('edit_post', $postID)) {
$this->auth_required(__('Sorry, you do not have the right to delete this post.'));
}

$location = get_post_meta($entry['ID'], '_wp_attached_file', true);
$filetype = wp_check_filetype($location);

if(!isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']))
$this->internal_error(__('Error ocurred while accessing post metadata for file location.'));

// delete file
@unlink($location);

// delete attachment
$result = wp_delete_post($postID);

if (!$result) {
$this->internal_error(__('For some strange yet very annoying reason, this post could not be deleted.'));
}

log_app('function',"delete_attachment($postID). File '$location' deleted.");
$this->ok();
}

/**
* Retrieve attachment from post.
*
* @since 2.2.0
*
* @param int $postID Post ID.
*/
function get_file($postID) {

// check for not found
global $entry;
$this->set_current_entry($postID);

// then whether user can edit the specific post
if(!current_user_can('edit_post', $postID)) {
$this->auth_required(__('Sorry, you do not have the right to edit this post.'));
}

$location = get_post_meta($entry['ID'], '_wp_attached_file', true);
$filetype = wp_check_filetype($location);

if(!isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']))
$this->internal_error(__('Error ocurred while accessing post metadata for file location.'));

status_header('200');
header('Content-Type: ' . $entry['post_mime_type']);
header('Connection: close');

$fp = fopen($location, "rb");
while(!feof($fp)) {
echo fread($fp, 4096);
}
fclose($fp);

log_app('function',"get_file($postID)");
exit;
}

/**
* Upload file to blog and add attachment to post.
*
* @since 2.2.0
*
* @param int $postID Post ID.
*/
function put_file($postID) {

// first check if user can upload
if(!current_user_can('upload_files'))
$this->auth_required(__('You do not have permission to upload files.'));

// check for not found
global $entry;
$this->set_current_entry($postID);

// then whether user can edit the specific post
if(!current_user_can('edit_post', $postID)) {
$this->auth_required(__('Sorry, you do not have the right to edit this post.'));
}

$upload_dir = wp_upload_dir( );
$location = get_post_meta($entry['ID'], '_wp_attached_file', true);
$filetype = wp_check_filetype($location);

$location = "{$upload_dir['basedir']}/{$location}";

if(!isset($location) || 'attachment' != $entry['post_type'] || empty($filetype['ext']))
$this->internal_error(__('Error ocurred while accessing post metadata for file location.'));

$fp = fopen("php://input", "rb");
$localfp = fopen($location, "w+");
while(!feof($fp)) {
fwrite($localfp,fread($fp, 4096));
}
fclose($fp);
fclose($localfp);

$ID = $entry['ID'];
$pubtimes = $this->get_publish_time($entry->published);
$post_date = $pubtimes[0];
$post_date_gmt = $pubtimes[1];
$pubtimes = $this->get_publish_time($parsed->updated);
$post_modified = $pubtimes[0];
$post_modified_gmt = $pubtimes[1];

$post_data = compact('ID', 'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt');
$result = wp_update_post($post_data);

if (!$result) {
$this->internal_error(__('Sorry, your entry could not be posted. Something wrong happened.'));
}

wp_update_attachment_metadata( $postID, wp_generate_attachment_metadata( $postID, $location ) );

log_app('function',"put_file($postID)");
$this->ok();
}

/**
* Retrieve entries URL.
*
* @since 2.2.0
*
* @param int $page Page ID.
* @return string
*/
function get_entries_url($page = null) {
if($GLOBALS['post_type'] == 'attachment') {
$path = $this->MEDIA_PATH;
} else {
$path = $this->ENTRIES_PATH;
}
$url = $this->app_base . $path;
if(isset($page) && is_int($page)) {
$url .= "/$page";
}
return $url;
}

/**
* Display entries URL.
*
* @since 2.2.0
*
* @param int $page Page ID.
*/
function the_entries_url($page = null) {
echo $this->get_entries_url($page);
}

/**
* Retrieve categories URL.
*
* @since 2.2.0
*
* @param mixed $deprecated Optional, not used.
* @return string
*/
function get_categories_url($deprecated = '') {
return $this->app_base . $this->CATEGORIES_PATH;
}

/**
* Display category URL.
*
* @since 2.2.0
*/
function the_categories_url() {
echo $this->get_categories_url();
}

/**
* Retrieve attachment URL.
*
* @since 2.2.0
*
* @param int $page Page ID.
* @return string
*/
function get_attachments_url($page = null) {
$url = $this->app_base . $this->MEDIA_PATH;
if(isset($page) && is_int($page)) {
$url .= "/$page";
}
return $url;
}

/**
* Display attachment URL.
*
* @since 2.2.0
*
* @param int $page Page ID.
*/
function the_attachments_url($page = null) {
echo $this->get_attachments_url($page);
}

/**
* Retrieve service URL.
*
* @since 2.3.0
*
* @return string
*/
function get_service_url() {
return $this->app_base . $this->SERVICE_PATH;
}

/**
* Retrieve entry URL.
*
* @since 2.7.0
*
* @param int $postID Post ID.
* @return string
*/
function get_entry_url($postID = null) {
if(!isset($postID)) {
global $post;
$postID = (int) $post->ID;
}

$url = $this->app_base . $this->ENTRY_PATH . "/$postID";

log_app('function',"get_entry_url() = $url");
return $url;
}

/**
* Display entry URL.
*
* @since 2.7.0
*
* @param int $postID Post ID.
*/
function the_entry_url($postID = null) {
echo $this->get_entry_url($postID);
}

/**
* Retrieve media URL.
*
* @since 2.2.0
*
* @param int $postID Post ID.
* @return string
*/
function get_media_url($postID = null) {
if(!isset($postID)) {
global $post;
$postID = (int) $post->ID;
}

$url = $this->app_base . $this->MEDIA_SINGLE_PATH ."/file/$postID";

log_app('function',"get_media_url() = $url");
return $url;
}

/**
* Display the media URL.
*
* @since 2.2.0
*
* @param int $postID Post ID.
*/
function the_media_url($postID = null) {
echo $this->get_media_url($postID);
}

/**
* Set the current entry to post ID.
*
* @since 2.2.0
*
* @param int $postID Post ID.
*/
function set_current_entry($postID) {
global $entry;
log_app('function',"set_current_entry($postID)");

if(!isset($postID)) {
// $this->bad_request();
$this->not_found();
}

$entry = wp_get_single_post($postID,ARRAY_A);

if(!isset($entry) || !isset($entry['ID']))
$this->not_found();

return;
}

/**
* Display posts XML.
*
* @since 2.2.0
*
* @param int $page Optional. Page ID.
* @param string $post_type Optional, default is 'post'. Post Type.
*/
function get_posts($page = 1, $post_type = 'post') {
log_app('function',"get_posts($page, '$post_type')");
$feed = $this->get_feed($page, $post_type);
$this->output($feed);
}

/**
* Display attachment XML.
*
* @since 2.2.0
*
* @param int $page Page ID.
* @param string $post_type Optional, default is 'attachment'. Post type.
*/
function get_attachments($page = 1, $post_type = 'attachment') {
log_app('function',"get_attachments($page, '$post_type')");
$GLOBALS['post_type'] = $post_type;
$feed = $this->get_feed($page, $post_type);
$this->output($feed);
}

/**
* Retrieve feed XML.
*
* @since 2.2.0
*
* @param int $page Page ID.
* @param string $post_type Optional, default is post. Post type.
* @return string
*/
function get_feed($page = 1, $post_type = 'post') {
global $post, $wp, $wp_query, $posts, $wpdb, $blog_id;
log_app('function',"get_feed($page, '$post_type')");
ob_start();

$this->ENTRY_PATH = $post_type;

if(!isset($page)) {
$page = 1;
}
$page = (int) $page;

$count = get_option('posts_per_rss');

wp('posts_per_page=' . $count . '&offset=' . ($count * ($page-1) . '&orderby=modified'));

$post = $GLOBALS['post'];
$posts = $GLOBALS['posts'];
$wp = $GLOBALS['wp'];
$wp_query = $GLOBALS['wp_query'];
$wpdb = $GLOBALS['wpdb'];
$blog_id = (int) $GLOBALS['blog_id'];
log_app('function',"query_posts(# " . print_r($wp_query, true) . "#)");

log_app('function',"total_count(# $wp_query->max_num_pages #)");
$last_page = $wp_query->max_num_pages;
$next_page = (($page + 1) > $last_page) ? NULL : $page + 1;
$prev_page = ($page - 1) < 1 ? NULL : $page - 1;
$last_page = ((int)$last_page == 1 || (int)$last_page == 0) ? NULL : (int) $last_page;
$self_page = $page > 1 ? $page : NULL;
?><feed xmlns="<?php echo $this->ATOM_NS ?>" xmlns:app="<?php echo $this->ATOMPUB_NS ?>" xml:lang="<?php echo get_option('rss_language'); ?>">
<id><?php $this->the_entries_url() ?></id>
<updated><?php echo mysql2date('Y-m-d\TH:i:s\Z', get_lastpostmodified('GMT'), false); ?></updated>
<title type="text"><?php bloginfo_rss('name') ?></title>
<subtitle type="text"><?php bloginfo_rss("description") ?></subtitle>
<link rel="first" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url() ?>" />
<?php if(isset($prev_page)): ?>
<link rel="previous" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($prev_page) ?>" />
<?php endif; ?>
<?php if(isset($next_page)): ?>
<link rel="next" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($next_page) ?>" />
<?php endif; ?>
<link rel="last" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($last_page) ?>" />
<link rel="self" type="<?php echo $this->ATOM_CONTENT_TYPE ?>" href="<?php $this->the_entries_url($self_page) ?>" />
<rights type="text">Copyright <?php echo date('Y'); ?></rights>
<?php the_generator( 'atom' ); ?>
<?php if ( have_posts() ) {
while ( have_posts() ) {
the_post();
$this->echo_entry();
}
}
?></feed>
<?php
$feed = ob_get_contents();
ob_end_clean();
return $feed;
}

/**
* Display entry XML.
*
* @since 2.2.0
*
* @param int $postID Post ID.
* @param string $post_type Optional, default is post. Post type.
* @return string.
*/
function get_entry($postID, $post_type = 'post') {
log_app('function',"get_entry($postID, '$post_type')");
ob_start();
switch($post_type) {
case 'post':
$varname = 'p';
break;
case 'attachment':
$this->ENTRY_PATH = 'attachment';
$varname = 'attachment_id';
break;
}
query_posts($varname . '=' . $postID);
if ( have_posts() ) {
while ( have_posts() ) {
the_post();
$this->echo_entry();
log_app('$post',print_r($GLOBALS['post'],true));
$entry = ob_get_contents();
break;
}
}
ob_end_clean();

log_app('get_entry returning:',$entry);
return $entry;
}

/**
* Display post content XML.
*
* @since 2.3.0
*/
function echo_entry() { ?>
<entry xmlns="<?php echo $this->ATOM_NS ?>"
xmlns:app="<?php echo $this->ATOMPUB_NS ?>" xml:lang="<?php echo get_option('rss_language'); ?>">
<id><?php the_guid($GLOBALS['post']->ID); ?></id>
<?php list($content_type, $content) = prep_atom_text_construct(get_the_title()); ?>
<title type="<?php echo $content_type ?>"><?php echo $content ?></title>
<updated><?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?></updated>
<published><?php echo get_post_time('Y-m-d\TH:i:s\Z', true); ?></published>
<app:edited><?php echo get_post_modified_time('Y-m-d\TH:i:s\Z', true); ?></app:edited>
<app:control>
<app:draft><?php echo ($GLOBALS['post']->post_status == 'draft' ? 'yes' : 'no') ?></app:draft>
</app:control>
<author>
<name><?php the_author()?></name>
<?php if ( get_the_author_meta('url') && get_the_author_meta('url') != 'http://' ) { ?>
<uri><?php the_author_meta('url') ?></uri>
<?php } ?>
</author>
<?php if($GLOBALS['post']->post_type == 'attachment') { ?>
<link rel="edit-media" href="<?php $this->the_media_url() ?>" />
<content type="<?php echo $GLOBALS['post']->post_mime_type ?>" src="<?php the_guid(); ?>"/>
<?php } else { ?>
<link href="<?php the_permalink_rss() ?>" />
<?php if ( strlen( $GLOBALS['post']->post_content ) ) :
list($content_type, $content) = prep_atom_text_construct(get_the_content()); ?>
<content type="<?php echo $content_type ?>"><?php echo $content ?></content>
<?php endif; ?>
<?php } ?>
<link rel="edit" href="<?php $this->the_entry_url() ?>" />
<?php the_category_rss( 'atom' ); ?>
<?php list($content_type, $content) = prep_atom_text_construct(get_the_excerpt()); ?>
<summary type="<?php echo $content_type ?>"><?php echo $content ?></summary>
</entry>
<?php }

/**
* Set 'OK' (200) status header.
*
* @since 2.2.0
*/
function ok() {
log_app('Status','200: OK');
header('Content-Type: text/plain');
status_header('200');
exit;
}

/**
* Set 'No Content' (204) status header.
*
* @since 2.2.0
*/
function no_content() {
log_app('Status','204: No Content');
header('Content-Type: text/plain');
status_header('204');
echo "Deleted.";
exit;
}

/**
* Display 'Internal Server Error' (500) status header.
*
* @since 2.2.0
*
* @param string $msg Optional. Status string.
*/
function internal_error($msg = 'Internal Server Error') {
log_app('Status','500: Server Error');
header('Content-Type: text/plain');
status_header('500');
echo $msg;
exit;
}

/**
* Set 'Bad Request' (400) status header.
*
* @since 2.2.0
*/
function bad_request() {
log_app('Status','400: Bad Request');
header('Content-Type: text/plain');
status_header('400');
exit;
}

/**
* Set 'Length Required' (411) status header.
*
* @since 2.2.0
*/
function length_required() {
log_app('Status','411: Length Required');
header("HTTP/1.1 411 Length Required");
header('Content-Type: text/plain');
status_header('411');
exit;
}

/**
* Set 'Unsupported Media Type' (415) status header.
*
* @since 2.2.0
*/
function invalid_media() {
log_app('Status','415: Unsupported Media Type');
header("HTTP/1.1 415 Unsupported Media Type");
header('Content-Type: text/plain');
exit;
}

/**
* Set 'Forbidden' (403) status header.
*
* @since 2.6.0
*/
function forbidden($reason='') {
log_app('Status','403: Forbidden');
header('Content-Type: text/plain');
status_header('403');
echo $reason;
exit;
}

/**
* Set 'Not Found' (404) status header.
*
* @since 2.2.0
*/
function not_found() {
log_app('Status','404: Not Found');
header('Content-Type: text/plain');
status_header('404');
exit;
}

/**
* Set 'Not Allowed' (405) status header.
*
* @since 2.2.0
*/
function not_allowed($allow) {
log_app('Status','405: Not Allowed');
header('Allow: ' . join(',', $allow));
status_header('405');
exit;
}

/**
* Display Redirect (302) content and set status headers.
*
* @since 2.3.0
*/
function redirect($url) {

log_app('Status','302: Redirect');
$escaped_url = esc_attr($url);
$content = <<<EOD
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html>
  <head>
    <title>302 Found</title>
  </head>
<body>
  <h1>Found</h1>
  <p>The document has moved <a href="$escaped_url">here</a>.</p>
  </body>
</html>

EOD;
header('HTTP/1.1 302 Moved');
header('Content-Type: text/html');
header('Location: ' . $url);
echo $content;
exit;

}

/**
* Set 'Client Error' (400) status header.
*
* @since 2.2.0
*/
function client_error($msg = 'Client Error') {
log_app('Status','400: Client Error');
header('Content-Type: text/plain');
status_header('400');
exit;
}

/**
* Set created status headers (201).
*
* Sets the 'content-type', 'content-location', and 'location'.
*
* @since 2.2.0
*/
function created($post_ID, $content, $post_type = 'post') {
log_app('created()::$post_ID',"$post_ID, $post_type");
$edit = $this->get_entry_url($post_ID);
switch($post_type) {
case 'post':
$ctloc = $this->get_entry_url($post_ID);
break;
case 'attachment':
$edit = $this->app_base . "attachments/$post_ID";
break;
}
header("Content-Type: $this->ATOM_CONTENT_TYPE");
if(isset($ctloc))
header('Content-Location: ' . $ctloc);
header('Location: ' . $edit);
status_header('201');
echo $content;
exit;
}

/**
* Set 'Auth Required' (401) headers.
*
* @since 2.2.0
*
* @param string $msg Status header content and HTML content.
*/
function auth_required($msg) {
log_app('Status','401: Auth Required');
nocache_headers();
header('WWW-Authenticate: Basic realm="WordPress Atom Protocol"');
header("HTTP/1.1 401 $msg");
header('Status: 401 ' . $msg);
header('Content-Type: text/html');
$content = <<<EOD
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html>
  <head>
    <title>401 Unauthorized</title>
  </head>
<body>
    <h1>401 Unauthorized</h1>
    <p>$msg</p>
  </body>
</html>

EOD;
echo $content;
exit;
}

/**
* Display XML and set headers with content type.
*
* @since 2.2.0
*
* @param string $xml Display feed content.
* @param string $ctype Optional, default is 'atom+xml'. Feed content type.
*/
function output($xml, $ctype = 'application/atom+xml') {
status_header('200');
$xml = '<?xml version="1.0" encoding="' . strtolower(get_option('blog_charset')) . '"?>'."\n".$xml;
header('Connection: close');
header('Content-Length: '. strlen($xml));
header('Content-Type: ' . $ctype);
header('Content-Disposition: attachment; filename=atom.xml');
header('Date: '. date('r'));
if($this->do_output)
echo $xml;
log_app('function', "output:\n$xml");
exit;
}

/**
* Sanitize content for database usage.
*
* @since 2.2.0
*
* @param array $array Sanitize array and multi-dimension array.
*/
function escape(&$array) {
global $wpdb;

foreach ($array as $k => $v) {
if (is_array($v)) {
$this->escape($array[$k]);
} else if (is_object($v)) {
//skip
} else {
$array[$k] = $wpdb->escape($v);
}
}
}

/**
* Access credential through various methods and perform login.
*
* @since 2.2.0
*
* @return bool
*/
function authenticate() {
log_app("authenticate()",print_r($_ENV, true));

// if using mod_rewrite/ENV hack
// http://www.besthostratings.com/articles/http-auth-php-cgi.html
if(isset($_SERVER['HTTP_AUTHORIZATION'])) {
list($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']) =
explode(':', base64_decode(substr($_SERVER['HTTP_AUTHORIZATION'], 6)));
} else if (isset($_SERVER['REDIRECT_REMOTE_USER'])) {
// Workaround for setups that do not forward HTTP_AUTHORIZATION
// See http://trac.wordpress.org/ticket/7361
list($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']) =
explode(':', base64_decode(substr($_SERVER['REDIRECT_REMOTE_USER'], 6)));
}

// If Basic Auth is working...
if(isset($_SERVER['PHP_AUTH_USER']) && isset($_SERVER['PHP_AUTH_PW'])) {
log_app("Basic Auth",$_SERVER['PHP_AUTH_USER']);
}

$user = wp_authenticate($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']);
if ( $user && !is_wp_error($user) ) {
wp_set_current_user($user->ID);
log_app("authenticate()", $user->user_login);
return true;
}

return false;
}

/**
* Retrieve accepted content types.
*
* @since 2.2.0
*
* @param array $types Optional. Content Types.
* @return string
*/
function get_accepted_content_type($types = null) {

if(!isset($types)) {
$types = $this->media_content_types;
}

if(!isset($_SERVER['CONTENT_LENGTH']) || !isset($_SERVER['CONTENT_TYPE'])) {
$this->length_required();
}

$type = $_SERVER['CONTENT_TYPE'];
list($type,$subtype) = explode('/',$type);
list($subtype) = explode(";",$subtype); // strip MIME parameters
log_app("get_accepted_content_type", "type=$type, subtype=$subtype");

foreach($types as $t) {
list($acceptedType,$acceptedSubtype) = explode('/',$t);
if($acceptedType == '*' || $acceptedType == $type) {
if($acceptedSubtype == '*' || $acceptedSubtype == $subtype)
return $type . "/" . $subtype;
}
}

$this->invalid_media();
}

/**
* Process conditionals for posts.
*
* @since 2.2.0
*/
function process_conditionals() {

if(empty($this->params)) return;
if($_SERVER['REQUEST_METHOD'] == 'DELETE') return;

switch($this->params[0]) {
case $this->ENTRY_PATH:
global $post;
$post = wp_get_single_post($this->params[1]);
$wp_last_modified = get_post_modified_time('D, d M Y H:i:s', true);
$post = NULL;
break;
case $this->ENTRIES_PATH:
$wp_last_modified = mysql2date('D, d M Y H:i:s', get_lastpostmodified('GMT'), 0).' GMT';
break;
default:
return;
}
$wp_etag = md5($wp_last_modified);
@header("Last-Modified: $wp_last_modified");
@header("ETag: $wp_etag");

// Support for Conditional GET
if (isset($_SERVER['HTTP_IF_NONE_MATCH']))
$client_etag = stripslashes($_SERVER['HTTP_IF_NONE_MATCH']);
else
$client_etag = false;

$client_last_modified = trim( $_SERVER['HTTP_IF_MODIFIED_SINCE']);
// If string is empty, return 0. If not, attempt to parse into a timestamp
$client_modified_timestamp = $client_last_modified ? strtotime($client_last_modified) : 0;

// Make a timestamp for our most recent modification...
$wp_modified_timestamp = strtotime($wp_last_modified);

if ( ($client_last_modified && $client_etag) ?
(($client_modified_timestamp >= $wp_modified_timestamp) && ($client_etag == $wp_etag)) :
(($client_modified_timestamp >= $wp_modified_timestamp) || ($client_etag == $wp_etag)) ) {
status_header( 304 );
exit;
}
}

/**
* Convert RFC3339 time string to timestamp.
*
* @since 2.3.0
*
* @param string $str String to time.
* @return bool|int false if format is incorrect.
*/
function rfc3339_str2time($str) {

$match = false;
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))
return false;

if($match[3] == 'Z')
$match[3] == '+0000';

return strtotime($match[1] . " " . $match[2] . " " . $match[3]);
}

/**
* Retrieve published time to display in XML.
*
* @since 2.3.0
*
* @param string $published Time string.
* @return string
*/
function get_publish_time($published) {

$pubtime = $this->rfc3339_str2time($published);

if(!$pubtime) {
return array(current_time('mysql'),current_time('mysql',1));
} else {
return array(date("Y-m-d H:i:s", $pubtime), gmdate("Y-m-d H:i:s", $pubtime));
}
}

}

/**
* AtomServer
* @var AtomServer
* @global object $server
*/
$server = new AtomServer();
$server->handle_request();

?>
Something went wrong with that request. Please try again.