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 || !is_array($iterator)) $iterator = $rss->entries;
 305                         if (!$iterator || !is_array($iterator)) $iterator = $rss;
 306
 307                         if (!is_array($iterator)) {
 308                                 db_query($link, "UPDATE ttrss_feeds
 309                                         SET last_error = 'CrazyBug 001: Can\'t find iterator :('
 310                                                 WHERE id = '$feed'");
 311                                 return; // WTF?
 312                         }
 313
 314                         foreach ($iterator as $item) {
 315
 316                                 $entry_guid = $item["id"];
 317
 318                                 if (!$entry_guid) $entry_guid = $item["guid"];
 319                                 if (!$entry_guid) $entry_guid = $item["link"];
 320
 321                                 if (!$entry_guid) continue;
 322
 323                                 $entry_timestamp = "";
 324
 325                                 $rss_2_date = $item['pubdate'];
 326                                 $rss_1_date = $item['dc']['date'];
 327                                 $atom_date = $item['issued'];
 328                                 if (!$atom_date) $atom_date = $item['updated'];
 329
 330                                 if ($atom_date != "") $entry_timestamp = parse_w3cdtf($atom_date);
 331                                 if ($rss_1_date != "") $entry_timestamp = parse_w3cdtf($rss_1_date);
 332                                 if ($rss_2_date != "") $entry_timestamp = strtotime($rss_2_date);
 333
 334                                 if ($entry_timestamp == "") {
 335                                         $entry_timestamp = time();
 336                                         $no_orig_date = 'true';
 337                                 } else {
 338                                         $no_orig_date = 'false';
 339                                 }
 340
 341                                 $entry_timestamp_fmt = strftime("%Y/%m/%d %H:%M:%S", $entry_timestamp);
 342
 343                                 $entry_title = $item["title"];
 344
 345                                 // strange Magpie workaround
 346                                 $entry_link = $item["link_"];
 347                                 if (!$entry_link) $entry_link = $item["link"];
 348
 349                                 if (!$entry_title) continue;
 350                                 if (!$entry_link) continue;
 351
 352                                 $entry_content = $item["content:escaped"];
 353
 354                                 if (!$entry_content) $entry_content = $item["content:encoded"];
 355                                 if (!$entry_content) $entry_content = $item["content"];
 356                                 if (!$entry_content) $entry_content = $item["summary"];
 357                                 if (!$entry_content) $entry_content = $item["description"];
 358
 359 //                              if (!$entry_content) continue;
 360
 361                                 // WTF
 362                                 if (is_array($entry_content)) {
 363                                         $entry_content = $entry_content["encoded"];
 364                                         if (!$entry_content) $entry_content = $entry_content["escaped"];
 365                                 }
 366
 367 //                              print_r($item);
 368 //                              print_r(htmlspecialchars($entry_content));
 369 //                              print "<br>";
 370
 371                                 $entry_content_unescaped = $entry_content;
 372                                 $content_hash = "SHA1:" . sha1(strip_tags($entry_content));
 373
 374                                 $entry_comments = $item["comments"];
 375
 376                                 $entry_author = db_escape_string($item['dc']['creator']);
 377
 378                                 $entry_guid = db_escape_string($entry_guid);
 379
 380                                 $result = db_query($link, "SELECT id FROM       ttrss_entries
 381                                         WHERE guid = '$entry_guid'");
 382
 383                                 $entry_content = db_escape_string($entry_content);
 384                                 $entry_title = db_escape_string($entry_title);
 385                                 $entry_link = db_escape_string($entry_link);
 386                                 $entry_comments = db_escape_string($entry_comments);
 387
 388                                 $num_comments = db_escape_string($item["slash"]["comments"]);
 389
 390                                 if (!$num_comments) $num_comments = 0;
 391
 392                                 if (db_num_rows($result) == 0) {
 393
 394                                         // base post entry does not exist, create it
 395
 396                                         $result = db_query($link,
 397                                                 "INSERT INTO ttrss_entries
 398                                                         (title,
 399                                                         guid,
 400                                                         link,
 401                                                         updated,
 402                                                         content,
 403                                                         content_hash,
 404                                                         no_orig_date,
 405                                                         date_entered,
 406                                                         comments,
 407                                                         num_comments,
 408                                                         author)
 409                                                 VALUES
 410                                                         ('$entry_title',
 411                                                         '$entry_guid',
 412                                                         '$entry_link',
 413                                                         '$entry_timestamp_fmt',
 414                                                         '$entry_content',
 415                                                         '$content_hash',
 416                                                         $no_orig_date,
 417                                                         NOW(),
 418                                                         '$entry_comments',
 419                                                         '$num_comments',
 420                                                         '$entry_author')");
 421                                 } else {
 422                                         // we keep encountering the entry in feeds, so we need to
 423                                         // update date_entered column so that we don't get horrible
 424                                         // dupes when the entry gets purged and reinserted again e.g.
 425                                         // in the case of SLOW SLOW OMG SLOW updating feeds
 426
 427                                         $base_entry_id = db_fetch_result($result, 0, "id");
 428
 429                                         db_query($link, "UPDATE ttrss_entries SET date_entered = NOW()
 430                                                 WHERE id = '$base_entry_id'");
 431                                 }
 432
 433                                 // now it should exist, if not - bad luck then
 434
 435                                 $result = db_query($link, "SELECT
 436                                                 id,content_hash,no_orig_date,title,
 437                                                 substring(date_entered,1,19) as date_entered,
 438                                                 substring(updated,1,19) as updated,
 439                                                 num_comments
 440                                         FROM
 441                                                 ttrss_entries
 442                                         WHERE guid = '$entry_guid'");
 443
 444                                 if (db_num_rows($result) == 1) {
 445
 446                                         // this will be used below in update handler
 447                                         $orig_content_hash = db_fetch_result($result, 0, "content_hash");
 448                                         $orig_title = db_fetch_result($result, 0, "title");
 449                                         $orig_num_comments = db_fetch_result($result, 0, "num_comments");
 450                                         $orig_date_entered = strtotime(db_fetch_result($result,
 451                                                 0, "date_entered"));
 452
 453                                         $ref_id = db_fetch_result($result, 0, "id");
 454
 455                                         // check for user post link to main table
 456
 457                                         // do we allow duplicate posts with same GUID in different feeds?
 458                                         if (get_pref($link, "ALLOW_DUPLICATE_POSTS", $owner_uid)) {
 459                                                 $dupcheck_qpart = "AND feed_id = '$feed'";
 460                                         } else {
 461                                                 $dupcheck_qpart = "";
 462                                         }
 463
 464 //                                      error_reporting(0);
 465
 466                                         $filter_name = get_filter_name($entry_title, $entry_content,
 467                                                 $entry_link, $filters);
 468
 469                                         if ($filter_name == "filter") {
 470                                                 continue;
 471                                         }
 472
 473 //                                      error_reporting (DEFAULT_ERROR_LEVEL);
 474
 475                                         $result = db_query($link,
 476                                                 "SELECT ref_id FROM ttrss_user_entries WHERE
 477                                                         ref_id = '$ref_id' AND owner_uid = '$owner_uid'
 478                                                         $dupcheck_qpart");
 479
 480                                         // okay it doesn't exist - create user entry
 481                                         if (db_num_rows($result) == 0) {
 482
 483                                                 if ($filter_name != 'catchup') {
 484                                                         $unread = 'true';
 485                                                         $last_read_qpart = 'NULL';
 486                                                 } else {
 487                                                         $unread = 'false';
 488                                                         $last_read_qpart = 'NOW()';
 489                                                 }
 490
 491                                                 $result = db_query($link,
 492                                                         "INSERT INTO ttrss_user_entries
 493                                                                 (ref_id, owner_uid, feed_id, unread, last_read)
 494                                                         VALUES ('$ref_id', '$owner_uid', '$feed', $unread,
 495                                                                 $last_read_qpart)");
 496                                         }
 497
 498                                         $post_needs_update = false;
 499
 500                                         if (get_pref($link, "UPDATE_POST_ON_CHECKSUM_CHANGE", $owner_uid) &&
 501                                                 ($content_hash != $orig_content_hash)) {
 502                                                 $post_needs_update = true;
 503                                         }
 504
 505                                         if ($orig_title != $entry_title) {
 506                                                 $post_needs_update = true;
 507                                         }
 508
 509                                         if ($orig_num_comments != $num_comments) {
 510                                                 $post_needs_update = true;
 511                                         }
 512
 513 //                                      this doesn't seem to be very reliable
 514 //
 515 //                                      if ($orig_timestamp != $entry_timestamp && !$orig_no_orig_date) {
 516 //                                              $post_needs_update = true;
 517 //                                      }
 518
 519                                         // if post needs update, update it and mark all user entries
 520                                         // linking to this post as updated
 521                                         if ($post_needs_update) {
 522
 523 //                                              print "<!-- post $orig_title needs update : $post_needs_update -->";
 524
 525                                                 db_query($link, "UPDATE ttrss_entries
 526                                                         SET title = '$entry_title', content = '$entry_content',
 527                                                                 num_comments = '$num_comments'
 528                                                         WHERE id = '$ref_id'");
 529
 530                                                 db_query($link, "UPDATE ttrss_user_entries
 531                                                         SET last_read = null WHERE ref_id = '$ref_id' AND unread = false");
 532
 533                                         }
 534                                 }
 535
 536                                 /* taaaags */
 537                                 // <a href="http://technorati.com/tag/Xorg" rel="tag">Xorg</a>, //
 538
 539                                 $entry_tags = null;
 540
 541                                 preg_match_all("/<a.*?href=.http:\/\/.*?technorati.com\/tag\/([^\"\'>]+)/i",
 542                                         $entry_content_unescaped, $entry_tags);
 543
 544 //                              print "<br>$entry_title : $entry_content_unescaped<br>";
 545 //                              print_r($entry_tags);
 546 //                              print "<br>";
 547
 548                                 $entry_tags = $entry_tags[1];
 549
 550                                 if (count($entry_tags) > 0) {
 551
 552                                         $result = db_query($link, "SELECT id,int_id
 553                                                 FROM ttrss_entries,ttrss_user_entries
 554                                                 WHERE guid = '$entry_guid'
 555                                                 AND feed_id = '$feed' AND ref_id = id
 556                                                 AND owner_uid = '$owner_uid'");
 557
 558                                         if (db_num_rows($result) == 1) {
 559
 560                                                 $entry_id = db_fetch_result($result, 0, "id");
 561                                                 $entry_int_id = db_fetch_result($result, 0, "int_id");
 562
 563                                                 foreach ($entry_tags as $tag) {
 564                                                         $tag = db_escape_string(strtolower($tag));
 565
 566                                                         $tag = str_replace("+", " ", $tag);
 567                                                         $tag = str_replace("technorati tag: ", "", $tag);
 568
 569                                                         $result = db_query($link, "SELECT id FROM ttrss_tags
 570                                                                 WHERE tag_name = '$tag' AND post_int_id = '$entry_int_id' AND
 571                                                                 owner_uid = '$owner_uid' LIMIT 1");
 572
 573         //                                              print db_fetch_result($result, 0, "id");
 574
 575                                                         if ($result && db_num_rows($result) == 0) {
 576
 577         //                                                      print "tagging $entry_id as $tag<br>";
 578
 579                                                                 db_query($link, "INSERT INTO ttrss_tags
 580                                                                         (owner_uid,tag_name,post_int_id)
 581                                                                         VALUES ('$owner_uid','$tag', '$entry_int_id')");
 582                                                         }
 583                                                 }
 584                                         }
 585                                 }
 586                         }
 587
 588                         db_query($link, "UPDATE ttrss_feeds
 589                                 SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
 590
 591                         db_query($link, "COMMIT");
 592
 593                 } else {
 594                         $error_msg = db_escape_string(magpie_error());
 595                         db_query($link,
 596                                 "UPDATE ttrss_feeds SET last_error = '$error_msg',
 597                                         last_updated = NOW() WHERE id = '$feed'");
 598                 }
 599
 600         }
 601
 602         function print_select($id, $default, $values, $attributes = "") {
 603                 print "<select id=\"$id\" $attributes>";
 604                 foreach ($values as $v) {
 605                         if ($v == $default)
 606                                 $sel = " selected";
 607                          else
 608                                 $sel = "";
 609
 610                         print "<option$sel>$v</option>";
 611                 }
 612                 print "</select>";
 613         }
 614
 615         function get_filter_name($title, $content, $link, $filters) {
 616
 617                 if ($filters["title"]) {
 618                         foreach ($filters["title"] as $filter) {
 619                                 $reg_exp = $filter["reg_exp"];
 620                                 if (preg_match("/$reg_exp/i", $title)) {
 621                                         return $filter["action"];
 622                                 }
 623                         }
 624                 }
 625
 626                 if ($filters["content"]) {
 627                         foreach ($filters["content"] as $filter) {
 628                                 $reg_exp = $filter["reg_exp"];
 629                                 if (preg_match("/$reg_exp/i", $content)) {
 630                                         return $filter["action"];
 631                                 }
 632                         }
 633                 }
 634
 635                 if ($filters["both"]) {
 636                         foreach ($filters["both"] as $filter) {
 637                                 $reg_exp = $filter["reg_exp"];
 638                                 if (preg_match("/$reg_exp/i", $title) ||
 639                                         preg_match("/$reg_exp/i", $content)) {
 640                                         return $filter["action"];
 641                                 }
 642                         }
 643                 }
 644
 645                 if ($filters["link"]) {
 646                         $reg_exp = $filter["reg_exp"];
 647                         foreach ($filters["link"] as $filter) {
 648                                 $reg_exp = $filter["reg_exp"];
 649                                 if (preg_match("/$reg_exp/i", $link)) {
 650                                         return $filter["action"];
 651                                 }
 652                         }
 653                 }
 654
 655                 return false;
 656         }
 657
 658         function printFeedEntry($feed_id, $class, $feed_title, $unread, $icon_file, $link) {
 659
 660                 if (file_exists($icon_file) && filesize($icon_file) > 0) {
 661                                 $feed_icon = "<img id=\"FIMG-$feed_id\" src=\"$icon_file\">";
 662                 } else {
 663                         $feed_icon = "<img id=\"FIMG-$feed_id\" src=\"images/blank_icon.gif\">";
 664                 }
 665
 666                 $feed = "<a href=\"javascript:viewfeed('$feed_id', 0);\">$feed_title</a>";
 667
 668                 print "<li id=\"FEEDR-$feed_id\" class=\"$class\">";
 669                 if (get_pref($link, 'ENABLE_FEED_ICONS')) {
 670                         print "$feed_icon";
 671                 }
 672
 673                 print "<span id=\"FEEDN-$feed_id\">$feed</span>";
 674
 675                 if ($unread != 0) {
 676                         $fctr_class = "";
 677                 } else {
 678                         $fctr_class = "class=\"invisible\"";
 679                 }
 680
 681                 print "<span $fctr_class id=\"FEEDCTR-$feed_id\">
 682                          (<span id=\"FEEDU-$feed_id\">$unread</span>)</span>";
 683
 684                 print "</li>";
 685
 686         }
 687
 688         function getmicrotime() {
 689                 list($usec, $sec) = explode(" ",microtime());
 690                 return ((float)$usec + (float)$sec);
 691         }
 692
 693         function print_radio($id, $default, $values, $attributes = "") {
 694                 foreach ($values as $v) {
 695
 696                         if ($v == $default)
 697                                 $sel = "checked";
 698                          else
 699                                 $sel = "";
 700
 701                         if ($v == "Yes") {
 702                                 $sel .= " value=\"1\"";
 703                         } else {
 704                                 $sel .= " value=\"0\"";
 705                         }
 706
 707                         print "<input class=\"noborder\"
 708                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 709
 710                 }
 711         }
 712
 713         function initialize_user_prefs($link, $uid) {
 714
 715                 $uid = db_escape_string($uid);
 716
 717                 db_query($link, "BEGIN");
 718
 719                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 720
 721                 $u_result = db_query($link, "SELECT pref_name
 722                         FROM ttrss_user_prefs WHERE owner_uid = '$uid'");
 723
 724                 $active_prefs = array();
 725
 726                 while ($line = db_fetch_assoc($u_result)) {
 727                         array_push($active_prefs, $line["pref_name"]);
 728                 }
 729
 730                 while ($line = db_fetch_assoc($result)) {
 731                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 732 //                              print "adding " . $line["pref_name"] . "<br>";
 733
 734                                 db_query($link, "INSERT INTO ttrss_user_prefs
 735                                         (owner_uid,pref_name,value) VALUES
 736                                         ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 737
 738                         }
 739                 }
 740
 741                 db_query($link, "COMMIT");
 742
 743         }
 744
 745         function authenticate_user($link, $login, $password) {
 746
 747                 $pwd_hash = 'SHA1:' . sha1($password);
 748
 749                 $result = db_query($link, "SELECT id,login,access_level FROM ttrss_users WHERE
 750                         login = '$login' AND pwd_hash = '$pwd_hash'");
 751
 752                 if (db_num_rows($result) == 1) {
 753                         $_SESSION["uid"] = db_fetch_result($result, 0, "id");
 754                         $_SESSION["name"] = db_fetch_result($result, 0, "login");
 755                         $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 756
 757                         db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 758                                 $_SESSION["uid"]);
 759
 760                         $user_theme = get_user_theme_path($link);
 761
 762                         $_SESSION["theme"] = $user_theme;
 763                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 764
 765                         initialize_user_prefs($link, $_SESSION["uid"]);
 766
 767                         return true;
 768                 }
 769
 770                 return false;
 771
 772         }
 773
 774         function make_password($length = 8) {
 775
 776                 $password = "";
 777                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 778
 779         $i = 0;
 780
 781                 while ($i < $length) {
 782                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 783
 784                         if (!strstr($password, $char)) {
 785                                 $password .= $char;
 786                                 $i++;
 787                         }
 788                 }
 789                 return $password;
 790         }
 791
 792         // this is called after user is created to initialize default feeds, labels
 793         // or whatever else
 794
 795         // user preferences are checked on every login, not here
 796
 797         function initialize_user($link, $uid) {
 798
 799                 db_query($link, "insert into ttrss_labels (owner_uid,sql_exp,description)
 800                         values ('$uid','unread = true', 'Unread articles')");
 801
 802                 db_query($link, "insert into ttrss_labels (owner_uid,sql_exp,description)
 803                         values ('$uid','last_read is null and unread = false', 'Updated articles')");
 804
 805                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 806                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 807                         'http://tt-rss.spb.ru/releases.rss')");
 808
 809         }
 810
 811         function logout_user() {
 812                 session_destroy();
 813                 if (isset($_COOKIE[session_name()])) {
 814                    setcookie(session_name(), '', time()-42000, '/');
 815                 }
 816         }
 817
 818         function get_script_urlpath() {
 819                 return preg_replace('/\/[^\/]*$/', "", $_SERVER["REQUEST_URI"]);
 820         }
 821
 822         function get_login_redirect() {
 823                 $server = $_SERVER["SERVER_NAME"];
 824
 825                 if (ENABLE_LOGIN_SSL) {
 826                         $protocol = "https";
 827                 } else {
 828                         $protocol = "http";
 829                 }
 830
 831                 $url_path = get_script_urlpath();
 832
 833                 $redirect_uri = "$protocol://$server$url_path/login.php";
 834
 835                 return $redirect_uri;
 836         }
 837
 838         function validate_session($link) {
 839                 if (SESSION_CHECK_ADDRESS && !DATABASE_BACKED_SESSIONS && $_SESSION["uid"]) {
 840                         if ($_SESSION["ip_address"]) {
 841                                 if ($_SESSION["ip_address"] != $_SERVER["REMOTE_ADDR"]) {
 842                                         return false;
 843                                 }
 844                         }
 845                 }
 846                 return true;
 847         }
 848
 849         function basic_nosid_redirect_check() {
 850                 if (!SINGLE_USER_MODE) {
 851                         if (!$_COOKIE["ttrss_sid"]) {
 852                                 $redirect_uri = get_login_redirect();
 853                                 $return_to = preg_replace('/.*?\//', '', $_SERVER["REQUEST_URI"]);
 854                                 header("Location: $redirect_uri?rt=$return_to");
 855                                 exit;
 856                         }
 857                 }
 858         }
 859
 860         function login_sequence($link) {
 861                 if (!SINGLE_USER_MODE) {
 862
 863                         if (!validate_session($link)) {
 864                                 logout_user();
 865                                 $redirect_uri = get_login_redirect();
 866                                 $return_to = preg_replace('/.*?\//', '', $_SERVER["REQUEST_URI"]);
 867                                 header("Location: $redirect_uri?rt=$return_to");
 868                                 exit;
 869                         }
 870
 871                         if (!USE_HTTP_AUTH) {
 872                                 if (!$_SESSION["uid"]) {
 873                                         $redirect_uri = get_login_redirect();
 874                                         $return_to = preg_replace('/.*?\//', '', $_SERVER["REQUEST_URI"]);
 875                                         header("Location: $redirect_uri?rt=$return_to");
 876                                         exit;
 877                                 }
 878                         } else {
 879                                 if (!$_SESSION["uid"]) {
 880                                         if (!$_SERVER["PHP_AUTH_USER"]) {
 881
 882                                                 header('WWW-Authenticate: Basic realm="Tiny Tiny RSS"');
 883                                                 header('HTTP/1.0 401 Unauthorized');
 884                                                 exit;
 885
 886                                         } else {
 887                                                 $auth_result = authenticate_user($link,
 888                                                         $_SERVER["PHP_AUTH_USER"], $_SERVER["PHP_AUTH_PW"]);
 889
 890                                                 if (!$auth_result) {
 891                                                         header('WWW-Authenticate: Basic realm="Tiny Tiny RSS"');
 892                                                         header('HTTP/1.0 401 Unauthorized');
 893                                                         exit;
 894                                                 }
 895                                         }
 896                                 }
 897                         }
 898                 } else {
 899                         $_SESSION["uid"] = 1;
 900                         $_SESSION["name"] = "admin";
 901                         initialize_user_prefs($link, 1);
 902                 }
 903         }
 904
 905         function truncate_string($str, $max_len) {
 906                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
 907                         return mb_substr($str, 0, $max_len, "utf-8") . "...";
 908                 } else {
 909                         return $str;
 910                 }
 911         }
 912
 913         function get_user_theme_path($link) {
 914                 $result = db_query($link, "SELECT theme_path
 915                         FROM
 916                                 ttrss_themes,ttrss_users
 917                         WHERE ttrss_themes.id = theme_id AND ttrss_users.id = " . $_SESSION["uid"]);
 918                 if (db_num_rows($result) != 0) {
 919                         return db_fetch_result($result, 0, "theme_path");
 920                 } else {
 921                         return null;
 922                 }
 923         }
 924
 925         function smart_date_time($timestamp) {
 926                 if (date("Y.m.d", $timestamp) == date("Y.m.d")) {
 927                         return date("G:i", $timestamp);
 928                 } else if (date("Y", $timestamp) == date("Y")) {
 929                         return date("M d, G:i", $timestamp);
 930                 } else {
 931                         return date("Y/m/d G:i", $timestamp);
 932                 }
 933         }
 934
 935         function smart_date($timestamp) {
 936                 if (date("Y.m.d", $timestamp) == date("Y.m.d")) {
 937                         return "Today";
 938                 } else if (date("Y", $timestamp) == date("Y")) {
 939                         return date("D m", $timestamp);
 940                 } else {
 941                         return date("Y/m/d", $timestamp);
 942                 }
 943         }
 944
 945         function sql_bool_to_string($s) {
 946                 if ($s == "t" || $s == "1") {
 947                         return "true";
 948                 } else {
 949                         return "false";
 950                 }
 951         }
 952
 953         function sql_bool_to_bool($s) {
 954                 if ($s == "t" || $s == "1") {
 955                         return true;
 956                 } else {
 957                         return false;
 958                 }
 959         }
 960
 961
 962         function toggleEvenOdd($a) {
 963                 if ($a == "even")
 964                         return "odd";
 965                 else
 966                         return "even";
 967         }
 968
 969         function sanity_check($link) {
 970
 971                 $error_code = 0;
 972                 $result = db_query($link, "SELECT schema_version FROM ttrss_version");
 973                 $schema_version = db_fetch_result($result, 0, "schema_version");
 974
 975                 if ($schema_version != SCHEMA_VERSION) {
 976                         $error_code = 5;
 977                 }
 978
 979                 if ($error_code != 0) {
 980                         print "<error error-code='$error_code'/>";
 981                         return false;
 982                 } else {
 983                         return true;
 984                 }
 985         }
 986
 987         function file_is_locked($filename) {
 988                 error_reporting(0);
 989                 $fp = fopen($filename, "r");
 990                 error_reporting(DEFAULT_ERROR_LEVEL);
 991                 if ($fp) {
 992                         if (flock($fp, LOCK_EX | LOCK_NB)) {
 993                                 flock($fp, LOCK_UN);
 994                                 fclose($fp);
 995                                 return false;
 996                         }
 997                         fclose($fp);
 998                         return true;
 999                 }
1000                 return false;
1001         }
1002
1003         function make_lockfile($filename) {
1004                 $fp = fopen($filename, "w");
1005
1006                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1007                         return $fp;
1008                 } else {
1009                         return false;
1010                 }
1011         }
1012
1013 ?>