functions.php

   1 <?
   2
   3         if ($_GET["debug"]) {
   4                 define('DEFAULT_ERROR_LEVEL', E_ALL);
   5         } else {
   6                 define('DEFAULT_ERROR_LEVEL', E_ERROR | E_WARNING | E_PARSE);
   7         }
   8
   9         require_once 'config.php';
  10         require_once 'db-prefs.php';
  11         require_once 'compat.php';
  12
  13         require_once 'magpierss/rss_utils.inc';
  14
  15         define('MAGPIE_OUTPUT_ENCODING', 'UTF-8');
  16
  17         function purge_feed($link, $feed_id, $purge_interval, $debug = false) {
  18
  19                 $rows = -1;
  20
  21                 if (DB_TYPE == "pgsql") {
  22                         $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
  23                                 marked = false AND feed_id = '$feed_id' AND
  24                                 (SELECT date_entered FROM ttrss_entries WHERE
  25                                         id = ref_id) < NOW() - INTERVAL '$purge_interval days'");
  26
  27                         $rows = pg_affected_rows($result);
  28
  29                 } else {
  30                         $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
  31                                 marked = false AND feed_id = '$feed_id' AND
  32                                 (SELECT date_entered FROM ttrss_entries WHERE
  33                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
  34                         $rows = mysql_affected_rows($link);
  35
  36                 }
  37
  38                 if ($debug) {
  39                         print "Purged feed $feed_id ($purge_interval): deleted $rows articles\n";
  40                 }
  41         }
  42
  43         function global_purge_old_posts($link, $do_output = false) {
  44
  45                 $result = db_query($link,
  46                         "SELECT id,purge_interval,owner_uid FROM ttrss_feeds ORDER BY id");
  47
  48                 while ($line = db_fetch_assoc($result)) {
  49
  50                         $feed_id = $line["id"];
  51                         $purge_interval = $line["purge_interval"];
  52                         $owner_uid = $line["owner_uid"];
  53
  54                         if ($purge_interval == 0) {
  55
  56                                 $tmp_result = db_query($link,
  57                                         "SELECT value FROM ttrss_user_prefs WHERE
  58                                                 pref_name = 'PURGE_OLD_DAYS' AND owner_uid = '$owner_uid'");
  59
  60                                 if (db_num_rows($tmp_result) != 0) {
  61                                         $purge_interval = db_fetch_result($tmp_result, 0, "value");
  62                                 }
  63                         }
  64
  65                         if ($do_output) {
  66 //                              print "Feed $feed_id: purge interval = $purge_interval\n";
  67                         }
  68
  69                         if ($purge_interval > 0) {
  70                                 purge_feed($link, $feed_id, $purge_interval, $do_output);
  71                         }
  72                 }
  73
  74                 // purge orphaned posts in main content table
  75                 db_query($link, "DELETE FROM ttrss_entries WHERE
  76                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
  77
  78         }
  79
  80         function purge_old_posts($link) {
  81
  82                 $user_id = $_SESSION["uid"];
  83
  84                 $result = db_query($link, "SELECT id,purge_interval FROM ttrss_feeds
  85                         WHERE owner_uid = '$user_id'");
  86
  87                 while ($line = db_fetch_assoc($result)) {
  88
  89                         $feed_id = $line["id"];
  90                         $purge_interval = $line["purge_interval"];
  91
  92                         if ($purge_interval == 0) $purge_interval = get_pref($link, 'PURGE_OLD_DAYS');
  93
  94                         if ($purge_interval > 0) {
  95                                 purge_feed($link, $feed_id, $purge_interval);
  96                         }
  97                 }
  98
  99                 // purge orphaned posts in main content table
 100                 db_query($link, "DELETE FROM ttrss_entries WHERE
 101                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 102         }
 103
 104         function update_all_feeds($link, $fetch, $user_id = false, $force_daemon = false) {
 105
 106                 if (WEB_DEMO_MODE) return;
 107
 108                 if (!$user_id) {
 109                         $user_id = $_SESSION["uid"];
 110                         purge_old_posts($link);
 111                 }
 112
 113 //              db_query($link, "BEGIN");
 114
 115                 if (MAX_UPDATE_TIME > 0) {
 116                         if (DB_TYPE == "mysql") {
 117                                 $q_order = "RAND()";
 118                         } else {
 119                                 $q_order = "RANDOM()";
 120                         }
 121                 } else {
 122                         $q_order = "last_updated DESC";
 123                 }
 124
 125                 $result = db_query($link, "SELECT feed_url,id,
 126                         SUBSTRING(last_updated,1,19) AS last_updated,
 127                         update_interval FROM ttrss_feeds WHERE owner_uid = '$user_id'
 128                         ORDER BY $q_order");
 129
 130                 $upd_start = time();
 131
 132                 while ($line = db_fetch_assoc($result)) {
 133                         $upd_intl = $line["update_interval"];
 134
 135                         if (!$upd_intl || $upd_intl == 0) {
 136                                 $upd_intl = get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $user_id);
 137                         }
 138
 139                         if ($upd_intl < 0) {
 140                                 // Updates for this feed are disabled
 141                                 continue;
 142                         }
 143
 144                         if ($fetch || (!$line["last_updated"] ||
 145                                 time() - strtotime($line["last_updated"]) > ($upd_intl * 60))) {
 146
 147 //                              print "<!-- feed: ".$line["feed_url"]." -->";
 148
 149                                 update_rss_feed($link, $line["feed_url"], $line["id"], $force_daemon);
 150
 151                                 $upd_elapsed = time() - $upd_start;
 152
 153                                 if (MAX_UPDATE_TIME > 0 && $upd_elapsed > MAX_UPDATE_TIME) {
 154                                         return;
 155                                 }
 156                         }
 157                 }
 158
 159 //              db_query($link, "COMMIT");
 160
 161         }
 162
 163         function check_feed_favicon($feed_url, $feed, $link) {
 164                 $feed_url = str_replace("http://", "", $feed_url);
 165                 $feed_url = preg_replace("/\/.*$/", "", $feed_url);
 166
 167                 $icon_url = "http://$feed_url/favicon.ico";
 168                 $icon_file = ICONS_DIR . "/$feed.ico";
 169
 170                 if (!file_exists($icon_file)) {
 171
 172                         error_reporting(0);
 173                         $r = fopen($icon_url, "r");
 174                         error_reporting (DEFAULT_ERROR_LEVEL);
 175
 176                         if ($r) {
 177                                 $tmpfname = tempnam(TMP_DIRECTORY, "ttrssicon");
 178
 179                                 $t = fopen($tmpfname, "w");
 180
 181                                 while (!feof($r)) {
 182                                         $buf = fread($r, 16384);
 183                                         fwrite($t, $buf);
 184                                 }
 185
 186                                 fclose($r);
 187                                 fclose($t);
 188
 189                                 error_reporting(0);
 190                                 if (!rename($tmpfname, $icon_file)) {
 191                                         unlink($tmpfname);
 192                                 }
 193
 194                                 chmod($icon_file, 0644);
 195
 196                                 error_reporting (DEFAULT_ERROR_LEVEL);
 197
 198                         }
 199                 }
 200         }
 201
 202         function update_rss_feed($link, $feed_url, $feed, $ignore_daemon = false) {
 203
 204                 if (WEB_DEMO_MODE) return;
 205
 206                 if (DAEMON_REFRESH_ONLY && !$_GET["daemon"] && !$ignore_daemon) {
 207                         return;
 208                 }
 209
 210                 $result = db_query($link, "SELECT update_interval,auth_login,auth_pass
 211                         FROM ttrss_feeds WHERE id = '$feed'");
 212
 213                 $auth_login = db_fetch_result($result, 0, "auth_login");
 214                 $auth_pass = db_fetch_result($result, 0, "auth_pass");
 215
 216                 $update_interval = db_fetch_result($result, 0, "update_interval");
 217
 218                 if ($update_interval < 0) { return; }
 219
 220                 $feed = db_escape_string($feed);
 221
 222                 $fetch_url = $feed_url;
 223
 224                 if ($auth_login && $auth_pass) {
 225                         $url_parts = array();
 226                         preg_match("/(^[^:]*):\/\/(.*)/", $fetch_url, $url_parts);
 227
 228                         if ($url_parts[1] && $url_parts[2]) {
 229                                 $fetch_url = $url_parts[1] . "://$auth_login:$auth_pass@" . $url_parts[2];
 230                         }
 231
 232                 }
 233                 error_reporting(0);
 234                 $rss = fetch_rss($fetch_url);
 235
 236                 error_reporting (DEFAULT_ERROR_LEVEL);
 237
 238                 $feed = db_escape_string($feed);
 239
 240                 if ($rss) {
 241
 242                         db_query($link, "BEGIN");
 243
 244                         $result = db_query($link, "SELECT title,icon_url,site_url,owner_uid
 245                                 FROM ttrss_feeds WHERE id = '$feed'");
 246
 247                         $registered_title = db_fetch_result($result, 0, "title");
 248                         $orig_icon_url = db_fetch_result($result, 0, "icon_url");
 249                         $orig_site_url = db_fetch_result($result, 0, "site_url");
 250
 251                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 252
 253                         if (get_pref($link, 'ENABLE_FEED_ICONS', $owner_uid)) {
 254                                 check_feed_favicon($feed_url, $feed, $link);
 255                         }
 256
 257                         if (!$registered_title || $registered_title == "[Unknown]") {
 258                                 $feed_title = db_escape_string($rss->channel["title"]);
 259                                 db_query($link, "UPDATE ttrss_feeds SET
 260                                         title = '$feed_title' WHERE id = '$feed'");
 261                         }
 262
 263                         $site_url = $rss->channel["link"];
 264                         // weird, weird Magpie
 265                         if (!$site_url) $site_url = db_escape_string($rss->channel["link_"]);
 266
 267                         if ($site_url && $orig_site_url != db_escape_string($site_url)) {
 268                                 db_query($link, "UPDATE ttrss_feeds SET
 269                                         site_url = '$site_url' WHERE id = '$feed'");
 270                         }
 271
 272 //                      print "I: " . $rss->channel["image"]["url"];
 273
 274                         $icon_url = $rss->image["url"];
 275
 276                         if ($icon_url && !$orig_icon_url != db_escape_string($icon_url)) {
 277                                 $icon_url = db_escape_string($icon_url);
 278                                 db_query($link, "UPDATE ttrss_feeds SET icon_url = '$icon_url' WHERE id = '$feed'");
 279                         }
 280
 281
 282                         $filters = array();
 283
 284                         $result = db_query($link, "SELECT reg_exp,
 285                                 ttrss_filter_types.name AS name,
 286                                 ttrss_filter_actions.name AS action
 287                                 FROM ttrss_filters,ttrss_filter_types,ttrss_filter_actions WHERE
 288                                         owner_uid = $owner_uid AND
 289                                         ttrss_filter_types.id = filter_type AND
 290                                         ttrss_filter_actions.id = action_id AND
 291                                 (feed_id IS NULL OR feed_id = '$feed')");
 292
 293                         while ($line = db_fetch_assoc($result)) {
 294                                 if (!$filters[$line["name"]]) $filters[$line["name"]] = array();
 295
 296                                 $filter["reg_exp"] = $line["reg_exp"];
 297                                 $filter["action"] = $line["action"];
 298
 299                                 array_push($filters[$line["name"]], $filter);
 300                         }
 301
 302                         $iterator = $rss->items;
 303
 304                         if (!$iterator) $iterator = $rss->entries;
 305                         if (!$iterator) $iterator = $rss;
 306
 307                         foreach ($iterator as $item) {
 308
 309                                 $entry_guid = $item["id"];
 310
 311                                 if (!$entry_guid) $entry_guid = $item["guid"];
 312                                 if (!$entry_guid) $entry_guid = $item["link"];
 313
 314                                 if (!$entry_guid) continue;
 315
 316                                 $entry_timestamp = "";
 317
 318                                 $rss_2_date = $item['pubdate'];
 319                                 $rss_1_date = $item['dc']['date'];
 320                                 $atom_date = $item['issued'];
 321                                 if (!$atom_date) $atom_date = $item['updated'];
 322
 323                                 if ($atom_date != "") $entry_timestamp = parse_w3cdtf($atom_date);
 324                                 if ($rss_1_date != "") $entry_timestamp = parse_w3cdtf($rss_1_date);
 325                                 if ($rss_2_date != "") $entry_timestamp = strtotime($rss_2_date);
 326
 327                                 if ($entry_timestamp == "") {
 328                                         $entry_timestamp = time();
 329                                         $no_orig_date = 'true';
 330                                 } else {
 331                                         $no_orig_date = 'false';
 332                                 }
 333
 334                                 $entry_timestamp_fmt = strftime("%Y/%m/%d %H:%M:%S", $entry_timestamp);
 335
 336                                 $entry_title = $item["title"];
 337
 338                                 // strange Magpie workaround
 339                                 $entry_link = $item["link_"];
 340                                 if (!$entry_link) $entry_link = $item["link"];
 341
 342                                 if (!$entry_title) continue;
 343                                 if (!$entry_link) continue;
 344
 345                                 $entry_content = $item["content:escaped"];
 346
 347                                 if (!$entry_content) $entry_content = $item["content:encoded"];
 348                                 if (!$entry_content) $entry_content = $item["content"];
 349                                 if (!$entry_content) $entry_content = $item["summary"];
 350                                 if (!$entry_content) $entry_content = $item["description"];
 351
 352 //                              if (!$entry_content) continue;
 353
 354                                 // WTF
 355                                 if (is_array($entry_content)) {
 356                                         $entry_content = $entry_content["encoded"];
 357                                         if (!$entry_content) $entry_content = $entry_content["escaped"];
 358                                 }
 359
 360 //                              print_r($item);
 361 //                              print_r(htmlspecialchars($entry_content));
 362 //                              print "<br>";
 363
 364                                 $entry_content_unescaped = $entry_content;
 365                                 $content_hash = "SHA1:" . sha1(strip_tags($entry_content));
 366
 367                                 $entry_comments = $item["comments"];
 368
 369                                 $entry_author = db_escape_string($item['dc']['creator']);
 370
 371                                 $entry_guid = db_escape_string($entry_guid);
 372
 373                                 $result = db_query($link, "SELECT id FROM       ttrss_entries
 374                                         WHERE guid = '$entry_guid'");
 375
 376                                 $entry_content = db_escape_string($entry_content);
 377                                 $entry_title = db_escape_string($entry_title);
 378                                 $entry_link = db_escape_string($entry_link);
 379                                 $entry_comments = db_escape_string($entry_comments);
 380
 381                                 $num_comments = db_escape_string($item["slash"]["comments"]);
 382
 383                                 if (!$num_comments) $num_comments = 0;
 384
 385                                 if (db_num_rows($result) == 0) {
 386
 387                                         // base post entry does not exist, create it
 388
 389                                         $result = db_query($link,
 390                                                 "INSERT INTO ttrss_entries
 391                                                         (title,
 392                                                         guid,
 393                                                         link,
 394                                                         updated,
 395                                                         content,
 396                                                         content_hash,
 397                                                         no_orig_date,
 398                                                         date_entered,
 399                                                         comments,
 400                                                         num_comments,
 401                                                         author)
 402                                                 VALUES
 403                                                         ('$entry_title',
 404                                                         '$entry_guid',
 405                                                         '$entry_link',
 406                                                         '$entry_timestamp_fmt',
 407                                                         '$entry_content',
 408                                                         '$content_hash',
 409                                                         $no_orig_date,
 410                                                         NOW(),
 411                                                         '$entry_comments',
 412                                                         '$num_comments',
 413                                                         '$entry_author')");
 414                                 } else {
 415                                         // we keep encountering the entry in feeds, so we need to
 416                                         // update date_entered column so that we don't get horrible
 417                                         // dupes when the entry gets purged and reinserted again e.g.
 418                                         // in the case of SLOW SLOW OMG SLOW updating feeds
 419
 420                                         $base_entry_id = db_fetch_result($result, 0, "id");
 421
 422                                         db_query($link, "UPDATE ttrss_entries SET date_entered = NOW()
 423                                                 WHERE id = '$base_entry_id'");
 424                                 }
 425
 426                                 // now it should exist, if not - bad luck then
 427
 428                                 $result = db_query($link, "SELECT
 429                                                 id,content_hash,no_orig_date,title,
 430                                                 substring(date_entered,1,19) as date_entered,
 431                                                 substring(updated,1,19) as updated,
 432                                                 num_comments
 433                                         FROM
 434                                                 ttrss_entries
 435                                         WHERE guid = '$entry_guid'");
 436
 437                                 if (db_num_rows($result) == 1) {
 438
 439                                         // this will be used below in update handler
 440                                         $orig_content_hash = db_fetch_result($result, 0, "content_hash");
 441                                         $orig_title = db_fetch_result($result, 0, "title");
 442                                         $orig_num_comments = db_fetch_result($result, 0, "num_comments");
 443                                         $orig_date_entered = strtotime(db_fetch_result($result,
 444                                                 0, "date_entered"));
 445
 446                                         $ref_id = db_fetch_result($result, 0, "id");
 447
 448                                         // check for user post link to main table
 449
 450                                         // do we allow duplicate posts with same GUID in different feeds?
 451                                         if (get_pref($link, "ALLOW_DUPLICATE_POSTS", $owner_uid)) {
 452                                                 $dupcheck_qpart = "AND feed_id = '$feed'";
 453                                         } else {
 454                                                 $dupcheck_qpart = "";
 455                                         }
 456
 457 //                                      error_reporting(0);
 458
 459                                         $filter_name = get_filter_name($entry_title, $entry_content,
 460                                                 $entry_link, $filters);
 461
 462                                         if ($filter_name == "filter") {
 463                                                 continue;
 464                                         }
 465
 466 //                                      error_reporting (DEFAULT_ERROR_LEVEL);
 467
 468                                         $result = db_query($link,
 469                                                 "SELECT ref_id FROM ttrss_user_entries WHERE
 470                                                         ref_id = '$ref_id' AND owner_uid = '$owner_uid'
 471                                                         $dupcheck_qpart");
 472
 473                                         // okay it doesn't exist - create user entry
 474                                         if (db_num_rows($result) == 0) {
 475
 476                                                 if ($filter_name != 'catchup') {
 477                                                         $unread = 'true';
 478                                                         $last_read_qpart = 'NULL';
 479                                                 } else {
 480                                                         $unread = 'false';
 481                                                         $last_read_qpart = 'NOW()';
 482                                                 }
 483
 484                                                 $result = db_query($link,
 485                                                         "INSERT INTO ttrss_user_entries
 486                                                                 (ref_id, owner_uid, feed_id, unread, last_read)
 487                                                         VALUES ('$ref_id', '$owner_uid', '$feed', $unread,
 488                                                                 $last_read_qpart)");
 489                                         }
 490
 491                                         $post_needs_update = false;
 492
 493                                         if (get_pref($link, "UPDATE_POST_ON_CHECKSUM_CHANGE", $owner_uid) &&
 494                                                 ($content_hash != $orig_content_hash)) {
 495                                                 $post_needs_update = true;
 496                                         }
 497
 498                                         if ($orig_title != $entry_title) {
 499                                                 $post_needs_update = true;
 500                                         }
 501
 502                                         if ($orig_num_comments != $num_comments) {
 503                                                 $post_needs_update = true;
 504                                         }
 505
 506 //                                      this doesn't seem to be very reliable
 507 //
 508 //                                      if ($orig_timestamp != $entry_timestamp && !$orig_no_orig_date) {
 509 //                                              $post_needs_update = true;
 510 //                                      }
 511
 512                                         // if post needs update, update it and mark all user entries
 513                                         // linking to this post as updated
 514                                         if ($post_needs_update) {
 515
 516 //                                              print "<!-- post $orig_title needs update : $post_needs_update -->";
 517
 518                                                 db_query($link, "UPDATE ttrss_entries
 519                                                         SET title = '$entry_title', content = '$entry_content',
 520                                                                 num_comments = '$num_comments'
 521                                                         WHERE id = '$ref_id'");
 522
 523                                                 db_query($link, "UPDATE ttrss_user_entries
 524                                                         SET last_read = null WHERE ref_id = '$ref_id' AND unread = false");
 525
 526                                         }
 527                                 }
 528
 529                                 /* taaaags */
 530                                 // <a href="http://technorati.com/tag/Xorg" rel="tag">Xorg</a>, //
 531
 532                                 $entry_tags = null;
 533
 534                                 preg_match_all("/<a.*?href=.http:\/\/.*?technorati.com\/tag\/([^\"\'>]+)/i",
 535                                         $entry_content_unescaped, $entry_tags);
 536
 537 //                              print "<br>$entry_title : $entry_content_unescaped<br>";
 538 //                              print_r($entry_tags);
 539 //                              print "<br>";
 540
 541                                 $entry_tags = $entry_tags[1];
 542
 543                                 if (count($entry_tags) > 0) {
 544
 545                                         $result = db_query($link, "SELECT id,int_id
 546                                                 FROM ttrss_entries,ttrss_user_entries
 547                                                 WHERE guid = '$entry_guid'
 548                                                 AND feed_id = '$feed' AND ref_id = id
 549                                                 AND owner_uid = '$owner_uid'");
 550
 551                                         if (db_num_rows($result) == 1) {
 552
 553                                                 $entry_id = db_fetch_result($result, 0, "id");
 554                                                 $entry_int_id = db_fetch_result($result, 0, "int_id");
 555
 556                                                 foreach ($entry_tags as $tag) {
 557                                                         $tag = db_escape_string(strtolower($tag));
 558
 559                                                         $tag = str_replace("+", " ", $tag);
 560                                                         $tag = str_replace("technorati tag: ", "", $tag);
 561
 562                                                         $result = db_query($link, "SELECT id FROM ttrss_tags
 563                                                                 WHERE tag_name = '$tag' AND post_int_id = '$entry_int_id' AND
 564                                                                 owner_uid = '$owner_uid' LIMIT 1");
 565
 566         //                                              print db_fetch_result($result, 0, "id");
 567
 568                                                         if ($result && db_num_rows($result) == 0) {
 569
 570         //                                                      print "tagging $entry_id as $tag<br>";
 571
 572                                                                 db_query($link, "INSERT INTO ttrss_tags
 573                                                                         (owner_uid,tag_name,post_int_id)
 574                                                                         VALUES ('$owner_uid','$tag', '$entry_int_id')");
 575                                                         }
 576                                                 }
 577                                         }
 578                                 }
 579                         }
 580
 581                         db_query($link, "UPDATE ttrss_feeds
 582                                 SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
 583
 584                         db_query($link, "COMMIT");
 585
 586                 } else {
 587                         $error_msg = db_escape_string(magpie_error());
 588                         db_query($link,
 589                                 "UPDATE ttrss_feeds SET last_error = '$error_msg',
 590                                         last_updated = NOW() WHERE id = '$feed'");
 591                 }
 592
 593         }
 594
 595         function print_select($id, $default, $values, $attributes = "") {
 596                 print "<select id=\"$id\" $attributes>";
 597                 foreach ($values as $v) {
 598                         if ($v == $default)
 599                                 $sel = " selected";
 600                          else
 601                                 $sel = "";
 602
 603                         print "<option$sel>$v</option>";
 604                 }
 605                 print "</select>";
 606         }
 607
 608         function get_filter_name($title, $content, $link, $filters) {
 609
 610                 if ($filters["title"]) {
 611                         foreach ($filters["title"] as $filter) {
 612                                 $reg_exp = $filter["reg_exp"];
 613                                 if (preg_match("/$reg_exp/i", $title)) {
 614                                         return $filter["action"];
 615                                 }
 616                         }
 617                 }
 618
 619                 if ($filters["content"]) {
 620                         foreach ($filters["content"] as $filter) {
 621                                 $reg_exp = $filter["reg_exp"];
 622                                 if (preg_match("/$reg_exp/i", $content)) {
 623                                         return $filter["action"];
 624                                 }
 625                         }
 626                 }
 627
 628                 if ($filters["both"]) {
 629                         foreach ($filters["both"] as $filter) {
 630                                 $reg_exp = $filter["reg_exp"];
 631                                 if (preg_match("/$reg_exp/i", $title) ||
 632                                         preg_match("/$reg_exp/i", $content)) {
 633                                         return $filter["action"];
 634                                 }
 635                         }
 636                 }
 637
 638                 if ($filters["link"]) {
 639                         $reg_exp = $filter["reg_exp"];
 640                         foreach ($filters["link"] as $filter) {
 641                                 $reg_exp = $filter["reg_exp"];
 642                                 if (preg_match("/$reg_exp/i", $link)) {
 643                                         return $filter["action"];
 644                                 }
 645                         }
 646                 }
 647
 648                 return false;
 649         }
 650
 651         function printFeedEntry($feed_id, $class, $feed_title, $unread, $icon_file, $link) {
 652
 653                 if (file_exists($icon_file) && filesize($icon_file) > 0) {
 654                                 $feed_icon = "<img id=\"FIMG-$feed_id\" src=\"$icon_file\">";
 655                 } else {
 656                         $feed_icon = "<img id=\"FIMG-$feed_id\" src=\"images/blank_icon.gif\">";
 657                 }
 658
 659                 $feed = "<a href=\"javascript:viewfeed('$feed_id', 0);\">$feed_title</a>";
 660
 661                 print "<li id=\"FEEDR-$feed_id\" class=\"$class\">";
 662                 if (get_pref($link, 'ENABLE_FEED_ICONS')) {
 663                         print "$feed_icon";
 664                 }
 665
 666                 print "<span id=\"FEEDN-$feed_id\">$feed</span>";
 667
 668                 if ($unread != 0) {
 669                         $fctr_class = "";
 670                 } else {
 671                         $fctr_class = "class=\"invisible\"";
 672                 }
 673
 674                 print "<span $fctr_class id=\"FEEDCTR-$feed_id\">
 675                          (<span id=\"FEEDU-$feed_id\">$unread</span>)</span>";
 676
 677                 print "</li>";
 678
 679         }
 680
 681         function getmicrotime() {
 682                 list($usec, $sec) = explode(" ",microtime());
 683                 return ((float)$usec + (float)$sec);
 684         }
 685
 686         function print_radio($id, $default, $values, $attributes = "") {
 687                 foreach ($values as $v) {
 688
 689                         if ($v == $default)
 690                                 $sel = "checked";
 691                          else
 692                                 $sel = "";
 693
 694                         if ($v == "Yes") {
 695                                 $sel .= " value=\"1\"";
 696                         } else {
 697                                 $sel .= " value=\"0\"";
 698                         }
 699
 700                         print "<input class=\"noborder\"
 701                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 702
 703                 }
 704         }
 705
 706         function initialize_user_prefs($link, $uid) {
 707
 708                 $uid = db_escape_string($uid);
 709
 710                 db_query($link, "BEGIN");
 711
 712                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 713
 714                 $u_result = db_query($link, "SELECT pref_name
 715                         FROM ttrss_user_prefs WHERE owner_uid = '$uid'");
 716
 717                 $active_prefs = array();
 718
 719                 while ($line = db_fetch_assoc($u_result)) {
 720                         array_push($active_prefs, $line["pref_name"]);
 721                 }
 722
 723                 while ($line = db_fetch_assoc($result)) {
 724                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 725 //                              print "adding " . $line["pref_name"] . "<br>";
 726
 727                                 db_query($link, "INSERT INTO ttrss_user_prefs
 728                                         (owner_uid,pref_name,value) VALUES
 729                                         ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 730
 731                         }
 732                 }
 733
 734                 db_query($link, "COMMIT");
 735
 736         }
 737
 738         function authenticate_user($link, $login, $password) {
 739
 740                 $pwd_hash = 'SHA1:' . sha1($password);
 741
 742                 $result = db_query($link, "SELECT id,login,access_level FROM ttrss_users WHERE
 743                         login = '$login' AND ((pwd_hash = '$password' AND '$password' = 'password')
 744                                 OR pwd_hash = '$pwd_hash')");
 745
 746                 if (db_num_rows($result) == 1) {
 747                         $_SESSION["uid"] = db_fetch_result($result, 0, "id");
 748                         $_SESSION["name"] = db_fetch_result($result, 0, "login");
 749                         $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 750
 751                         db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 752                                 $_SESSION["uid"]);
 753
 754                         $user_theme = get_user_theme_path($link);
 755
 756                         $_SESSION["theme"] = $user_theme;
 757                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 758
 759                         initialize_user_prefs($link, $_SESSION["uid"]);
 760
 761                         return true;
 762                 }
 763
 764                 return false;
 765
 766         }
 767
 768         function make_password($length = 8) {
 769
 770                 $password = "";
 771                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 772
 773         $i = 0;
 774
 775                 while ($i < $length) {
 776                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 777
 778                         if (!strstr($password, $char)) {
 779                                 $password .= $char;
 780                                 $i++;
 781                         }
 782                 }
 783                 return $password;
 784         }
 785
 786         // this is called after user is created to initialize default feeds, labels
 787         // or whatever else
 788
 789         // user preferences are checked on every login, not here
 790
 791         function initialize_user($link, $uid) {
 792
 793                 db_query($link, "insert into ttrss_labels (owner_uid,sql_exp,description)
 794                         values ('$uid','unread = true', 'Unread articles')");
 795
 796                 db_query($link, "insert into ttrss_labels (owner_uid,sql_exp,description)
 797                         values ('$uid','last_read is null and unread = false', 'Updated articles')");
 798
 799                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 800                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 801                         'http://tt-rss.spb.ru/releases.rss')");
 802
 803         }
 804
 805         function logout_user() {
 806                 session_destroy();
 807                 if (isset($_COOKIE[session_name()])) {
 808                    setcookie(session_name(), '', time()-42000, '/');
 809                 }
 810         }
 811
 812         function get_script_urlpath() {
 813                 return preg_replace('/\/[^\/]*$/', "", $_SERVER["REQUEST_URI"]);
 814         }
 815
 816         function get_login_redirect() {
 817                 $server = $_SERVER["SERVER_NAME"];
 818
 819                 if (ENABLE_LOGIN_SSL) {
 820                         $protocol = "https";
 821                 } else {
 822                         $protocol = "http";
 823                 }
 824
 825                 $url_path = get_script_urlpath();
 826
 827                 $redirect_uri = "$protocol://$server$url_path/login.php";
 828
 829                 return $redirect_uri;
 830         }
 831
 832         function validate_session($link) {
 833                 if (SESSION_CHECK_ADDRESS && !DATABASE_BACKED_SESSIONS && $_SESSION["uid"]) {
 834                         if ($_SESSION["ip_address"]) {
 835                                 if ($_SESSION["ip_address"] != $_SERVER["REMOTE_ADDR"]) {
 836                                         return false;
 837                                 }
 838                         }
 839                 }
 840                 return true;
 841         }
 842
 843         function login_sequence($link) {
 844                 if (!SINGLE_USER_MODE) {
 845
 846                         if (!validate_session($link)) {
 847                                 logout_user();
 848                                 $redirect_uri = get_login_redirect();
 849                                 $return_to = preg_replace('/.*?\//', '', $_SERVER["REQUEST_URI"]);
 850                                 header("Location: $redirect_uri?rt=$return_to");
 851                                 exit;
 852                         }
 853
 854                         if (!USE_HTTP_AUTH) {
 855                                 if (!$_SESSION["uid"]) {
 856                                         $redirect_uri = get_login_redirect();
 857                                         $return_to = preg_replace('/.*?\//', '', $_SERVER["REQUEST_URI"]);
 858                                         header("Location: $redirect_uri?rt=$return_to");
 859                                         exit;
 860                                 }
 861                         } else {
 862                                 if (!$_SESSION["uid"]) {
 863                                         if (!$_SERVER["PHP_AUTH_USER"]) {
 864
 865                                                 header('WWW-Authenticate: Basic realm="Tiny Tiny RSS"');
 866                                                 header('HTTP/1.0 401 Unauthorized');
 867                                                 exit;
 868
 869                                         } else {
 870                                                 $auth_result = authenticate_user($link,
 871                                                         $_SERVER["PHP_AUTH_USER"], $_SERVER["PHP_AUTH_PW"]);
 872
 873                                                 if (!$auth_result) {
 874                                                         header('WWW-Authenticate: Basic realm="Tiny Tiny RSS"');
 875                                                         header('HTTP/1.0 401 Unauthorized');
 876                                                         exit;
 877                                                 }
 878                                         }
 879                                 }
 880                         }
 881                 } else {
 882                         $_SESSION["uid"] = 1;
 883                         $_SESSION["name"] = "admin";
 884                         initialize_user_prefs($link, 1);
 885                 }
 886         }
 887
 888         function truncate_string($str, $max_len) {
 889                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
 890                         return mb_substr($str, 0, $max_len, "utf-8") . "...";
 891                 } else {
 892                         return $str;
 893                 }
 894         }
 895
 896         function get_user_theme_path($link) {
 897                 $result = db_query($link, "SELECT theme_path
 898                         FROM
 899                                 ttrss_themes,ttrss_users
 900                         WHERE ttrss_themes.id = theme_id AND ttrss_users.id = " . $_SESSION["uid"]);
 901                 if (db_num_rows($result) != 0) {
 902                         return db_fetch_result($result, 0, "theme_path");
 903                 } else {
 904                         return null;
 905                 }
 906         }
 907
 908         function smart_date_time($timestamp) {
 909                 if (date("Y.m.d", $timestamp) == date("Y.m.d")) {
 910                         return date("G:i", $timestamp);
 911                 } else if (date("Y", $timestamp) == date("Y")) {
 912                         return date("M d, G:i", $timestamp);
 913                 } else {
 914                         return date("Y/m/d G:i", $timestamp);
 915                 }
 916         }
 917
 918         function smart_date($timestamp) {
 919                 if (date("Y.m.d", $timestamp) == date("Y.m.d")) {
 920                         return "Today";
 921                 } else if (date("Y", $timestamp) == date("Y")) {
 922                         return date("D m", $timestamp);
 923                 } else {
 924                         return date("Y/m/d", $timestamp);
 925                 }
 926         }
 927
 928         function sql_bool_to_string($s) {
 929                 if ($s == "t" || $s == "1") {
 930                         return "true";
 931                 } else {
 932                         return "false";
 933                 }
 934         }
 935
 936         function sql_bool_to_bool($s) {
 937                 if ($s == "t" || $s == "1") {
 938                         return true;
 939                 } else {
 940                         return false;
 941                 }
 942         }
 943
 944
 945         function toggleEvenOdd($a) {
 946                 if ($a == "even")
 947                         return "odd";
 948                 else
 949                         return "even";
 950         }
 951
 952         function sanity_check($link) {
 953
 954                 $error_code = 0;
 955                 $result = db_query($link, "SELECT schema_version FROM ttrss_version");
 956                 $schema_version = db_fetch_result($result, 0, "schema_version");
 957
 958                 if ($schema_version != SCHEMA_VERSION) {
 959                         $error_code = 5;
 960                 }
 961
 962                 if ($error_code != 0) {
 963                         print "<error error-code='$error_code'/>";
 964                         return false;
 965                 } else {
 966                         return true;
 967                 }
 968         }
 969
 970         function file_is_locked($filename) {
 971                 error_reporting(0);
 972                 $fp = fopen($filename, "r");
 973                 error_reporting(DEFAULT_ERROR_LEVEL);
 974                 if ($fp) {
 975                         if (flock($fp, LOCK_EX | LOCK_NB)) {
 976                                 flock($fp, LOCK_UN);
 977                                 fclose($fp);
 978                                 return false;
 979                         }
 980                         fclose($fp);
 981                         return true;
 982                 }
 983                 return false;
 984         }
 985
 986         function make_lockfile($filename) {
 987                 $fp = fopen($filename, "w");
 988
 989                 if (flock($fp, LOCK_EX | LOCK_NB)) {
 990                         return $fp;
 991                 } else {
 992                         return false;
 993                 }
 994         }
 995
 996 ?>