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                         $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
  28                                 ttrss_entries.id = ref_id AND
  29                                 marked = false AND
  30                                 feed_id = '$feed_id' AND
  31                                 ttrss_entries.date_entered < NOW() - INTERVAL '$purge_interval days'");
  32
  33                         $rows = pg_affected_rows($result);
  34
  35                 } else {
  36 /*                      $result = db_query($link, "DELETE FROM ttrss_user_entries WHERE
  37                                 marked = false AND feed_id = '$feed_id' AND
  38                                 (SELECT date_entered FROM ttrss_entries WHERE
  39                                         id = ref_id) < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
  40
  41                         $result = db_query($link, "DELETE FROM ttrss_user_entries
  42                                 USING ttrss_user_entries, ttrss_entries
  43                                 WHERE ttrss_entries.id = ref_id AND
  44                                 marked = false AND
  45                                 feed_id = '$feed_id' AND
  46                                 ttrss_entries.date_entered < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
  47
  48                         $rows = mysql_affected_rows($link);
  49
  50                 }
  51
  52                 if ($debug) {
  53                         print "Purged feed $feed_id ($purge_interval): deleted $rows articles\n";
  54                 }
  55         }
  56
  57         function global_purge_old_posts($link, $do_output = false, $limit = false) {
  58
  59                 if (DB_TYPE == "mysql") {
  60                         $random_qpart = "RAND()";
  61                 } else {
  62                         $random_qpart = "RANDOM()";
  63                 }
  64
  65                 if ($limit) {
  66                         $limit_qpart = "LIMIT $limit";
  67                 } else {
  68                         $limit_qpart = "";
  69                 }
  70
  71                 $result = db_query($link,
  72                         "SELECT id,purge_interval,owner_uid FROM ttrss_feeds
  73                                 ORDER BY $random_qpart $limit_qpart");
  74
  75                 while ($line = db_fetch_assoc($result)) {
  76
  77                         $feed_id = $line["id"];
  78                         $purge_interval = $line["purge_interval"];
  79                         $owner_uid = $line["owner_uid"];
  80
  81                         if ($purge_interval == 0) {
  82
  83                                 $tmp_result = db_query($link,
  84                                         "SELECT value FROM ttrss_user_prefs WHERE
  85                                                 pref_name = 'PURGE_OLD_DAYS' AND owner_uid = '$owner_uid'");
  86
  87                                 if (db_num_rows($tmp_result) != 0) {
  88                                         $purge_interval = db_fetch_result($tmp_result, 0, "value");
  89                                 }
  90                         }
  91
  92                         if ($do_output) {
  93 //                              print "Feed $feed_id: purge interval = $purge_interval\n";
  94                         }
  95
  96                         if ($purge_interval > 0) {
  97                                 purge_feed($link, $feed_id, $purge_interval, $do_output);
  98                         }
  99                 }
 100
 101                 // purge orphaned posts in main content table
 102                 db_query($link, "DELETE FROM ttrss_entries WHERE
 103                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 104
 105         }
 106
 107         function purge_old_posts($link) {
 108
 109                 $user_id = $_SESSION["uid"];
 110
 111                 $result = db_query($link, "SELECT id,purge_interval FROM ttrss_feeds
 112                         WHERE owner_uid = '$user_id'");
 113
 114                 while ($line = db_fetch_assoc($result)) {
 115
 116                         $feed_id = $line["id"];
 117                         $purge_interval = $line["purge_interval"];
 118
 119                         if ($purge_interval == 0) $purge_interval = get_pref($link, 'PURGE_OLD_DAYS');
 120
 121                         if ($purge_interval > 0) {
 122                                 purge_feed($link, $feed_id, $purge_interval);
 123                         }
 124                 }
 125
 126                 // purge orphaned posts in main content table
 127                 db_query($link, "DELETE FROM ttrss_entries WHERE
 128                         (SELECT COUNT(int_id) FROM ttrss_user_entries WHERE ref_id = id) = 0");
 129         }
 130
 131         function update_all_feeds($link, $fetch, $user_id = false, $force_daemon = false) {
 132
 133                 if (WEB_DEMO_MODE) return;
 134
 135                 if (!$user_id) {
 136                         $user_id = $_SESSION["uid"];
 137                         purge_old_posts($link);
 138                 }
 139
 140 //              db_query($link, "BEGIN");
 141
 142                 if (MAX_UPDATE_TIME > 0) {
 143                         if (DB_TYPE == "mysql") {
 144                                 $q_order = "RAND()";
 145                         } else {
 146                                 $q_order = "RANDOM()";
 147                         }
 148                 } else {
 149                         $q_order = "last_updated DESC";
 150                 }
 151
 152                 $result = db_query($link, "SELECT feed_url,id,
 153                         SUBSTRING(last_updated,1,19) AS last_updated,
 154                         update_interval FROM ttrss_feeds WHERE owner_uid = '$user_id'
 155                         ORDER BY $q_order");
 156
 157                 $upd_start = time();
 158
 159                 while ($line = db_fetch_assoc($result)) {
 160                         $upd_intl = $line["update_interval"];
 161
 162                         if (!$upd_intl || $upd_intl == 0) {
 163                                 $upd_intl = get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $user_id);
 164                         }
 165
 166                         if ($upd_intl < 0) {
 167                                 // Updates for this feed are disabled
 168                                 continue;
 169                         }
 170
 171                         if ($fetch || (!$line["last_updated"] ||
 172                                 time() - strtotime($line["last_updated"]) > ($upd_intl * 60))) {
 173
 174 //                              print "<!-- feed: ".$line["feed_url"]." -->";
 175
 176                                 update_rss_feed($link, $line["feed_url"], $line["id"], $force_daemon);
 177
 178                                 $upd_elapsed = time() - $upd_start;
 179
 180                                 if (MAX_UPDATE_TIME > 0 && $upd_elapsed > MAX_UPDATE_TIME) {
 181                                         return;
 182                                 }
 183                         }
 184                 }
 185
 186 //              db_query($link, "COMMIT");
 187
 188         }
 189
 190         function check_feed_favicon($feed_url, $feed, $link) {
 191                 $feed_url = str_replace("http://", "", $feed_url);
 192                 $feed_url = preg_replace("/\/.*$/", "", $feed_url);
 193
 194                 $icon_url = "http://$feed_url/favicon.ico";
 195                 $icon_file = ICONS_DIR . "/$feed.ico";
 196
 197                 if (!file_exists($icon_file)) {
 198
 199                         error_reporting(0);
 200                         $r = fopen($icon_url, "r");
 201                         error_reporting (DEFAULT_ERROR_LEVEL);
 202
 203                         if ($r) {
 204                                 $tmpfname = tempnam(TMP_DIRECTORY, "ttrssicon");
 205
 206                                 $t = fopen($tmpfname, "w");
 207
 208                                 while (!feof($r)) {
 209                                         $buf = fread($r, 16384);
 210                                         fwrite($t, $buf);
 211                                 }
 212
 213                                 fclose($r);
 214                                 fclose($t);
 215
 216                                 error_reporting(0);
 217                                 if (!rename($tmpfname, $icon_file)) {
 218                                         unlink($tmpfname);
 219                                 }
 220
 221                                 chmod($icon_file, 0644);
 222
 223                                 error_reporting (DEFAULT_ERROR_LEVEL);
 224
 225                         }
 226                 }
 227         }
 228
 229         function update_rss_feed($link, $feed_url, $feed, $ignore_daemon = false) {
 230
 231                 if (WEB_DEMO_MODE) return;
 232
 233                 if (DAEMON_REFRESH_ONLY && !$_GET["daemon"] && !$ignore_daemon) {
 234                         return;
 235                 }
 236
 237                 $result = db_query($link, "SELECT update_interval,auth_login,auth_pass
 238                         FROM ttrss_feeds WHERE id = '$feed'");
 239
 240                 $auth_login = db_fetch_result($result, 0, "auth_login");
 241                 $auth_pass = db_fetch_result($result, 0, "auth_pass");
 242
 243                 $update_interval = db_fetch_result($result, 0, "update_interval");
 244
 245                 if ($update_interval < 0) { return; }
 246
 247                 $feed = db_escape_string($feed);
 248
 249                 $fetch_url = $feed_url;
 250
 251                 if ($auth_login && $auth_pass) {
 252                         $url_parts = array();
 253                         preg_match("/(^[^:]*):\/\/(.*)/", $fetch_url, $url_parts);
 254
 255                         if ($url_parts[1] && $url_parts[2]) {
 256                                 $fetch_url = $url_parts[1] . "://$auth_login:$auth_pass@" . $url_parts[2];
 257                         }
 258
 259                 }
 260                 error_reporting(0);
 261                 $rss = fetch_rss($fetch_url);
 262
 263                 error_reporting (DEFAULT_ERROR_LEVEL);
 264
 265                 $feed = db_escape_string($feed);
 266
 267                 if ($rss) {
 268
 269 //                      db_query($link, "BEGIN");
 270
 271                         $result = db_query($link, "SELECT title,icon_url,site_url,owner_uid
 272                                 FROM ttrss_feeds WHERE id = '$feed'");
 273
 274                         $registered_title = db_fetch_result($result, 0, "title");
 275                         $orig_icon_url = db_fetch_result($result, 0, "icon_url");
 276                         $orig_site_url = db_fetch_result($result, 0, "site_url");
 277
 278                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 279
 280                         if (get_pref($link, 'ENABLE_FEED_ICONS', $owner_uid)) {
 281                                 check_feed_favicon($feed_url, $feed, $link);
 282                         }
 283
 284                         if (!$registered_title || $registered_title == "[Unknown]") {
 285                                 $feed_title = db_escape_string($rss->channel["title"]);
 286                                 db_query($link, "UPDATE ttrss_feeds SET
 287                                         title = '$feed_title' WHERE id = '$feed'");
 288                         }
 289
 290                         $site_url = $rss->channel["link"];
 291                         // weird, weird Magpie
 292                         if (!$site_url) $site_url = db_escape_string($rss->channel["link_"]);
 293
 294                         if ($site_url && $orig_site_url != db_escape_string($site_url)) {
 295                                 db_query($link, "UPDATE ttrss_feeds SET
 296                                         site_url = '$site_url' WHERE id = '$feed'");
 297                         }
 298
 299 //                      print "I: " . $rss->channel["image"]["url"];
 300
 301                         $icon_url = $rss->image["url"];
 302
 303                         if ($icon_url && !$orig_icon_url != db_escape_string($icon_url)) {
 304                                 $icon_url = db_escape_string($icon_url);
 305                                 db_query($link, "UPDATE ttrss_feeds SET icon_url = '$icon_url' WHERE id = '$feed'");
 306                         }
 307
 308
 309                         $filters = array();
 310
 311                         $result = db_query($link, "SELECT reg_exp,
 312                                 ttrss_filter_types.name AS name,
 313                                 ttrss_filter_actions.name AS action
 314                                 FROM ttrss_filters,ttrss_filter_types,ttrss_filter_actions WHERE
 315                                         owner_uid = $owner_uid AND
 316                                         ttrss_filter_types.id = filter_type AND
 317                                         ttrss_filter_actions.id = action_id AND
 318                                 (feed_id IS NULL OR feed_id = '$feed')");
 319
 320                         while ($line = db_fetch_assoc($result)) {
 321                                 if (!$filters[$line["name"]]) $filters[$line["name"]] = array();
 322
 323                                 $filter["reg_exp"] = $line["reg_exp"];
 324                                 $filter["action"] = $line["action"];
 325
 326                                 array_push($filters[$line["name"]], $filter);
 327                         }
 328
 329                         $iterator = $rss->items;
 330
 331                         if (!$iterator || !is_array($iterator)) $iterator = $rss->entries;
 332                         if (!$iterator || !is_array($iterator)) $iterator = $rss;
 333
 334                         if (!is_array($iterator)) {
 335                                 db_query($link, "UPDATE ttrss_feeds
 336                                         SET last_error = 'CrazyBug 001: Can\'t find iterator :('
 337                                                 WHERE id = '$feed'");
 338                                 return; // WTF?
 339                         }
 340
 341                         foreach ($iterator as $item) {
 342
 343                                 $entry_guid = $item["id"];
 344
 345                                 if (!$entry_guid) $entry_guid = $item["guid"];
 346                                 if (!$entry_guid) $entry_guid = $item["link"];
 347
 348                                 if (!$entry_guid) continue;
 349
 350                                 $entry_timestamp = "";
 351
 352                                 $rss_2_date = $item['pubdate'];
 353                                 $rss_1_date = $item['dc']['date'];
 354                                 $atom_date = $item['issued'];
 355                                 if (!$atom_date) $atom_date = $item['updated'];
 356
 357                                 if ($atom_date != "") $entry_timestamp = parse_w3cdtf($atom_date);
 358                                 if ($rss_1_date != "") $entry_timestamp = parse_w3cdtf($rss_1_date);
 359                                 if ($rss_2_date != "") $entry_timestamp = strtotime($rss_2_date);
 360
 361                                 if ($entry_timestamp == "") {
 362                                         $entry_timestamp = time();
 363                                         $no_orig_date = 'true';
 364                                 } else {
 365                                         $no_orig_date = 'false';
 366                                 }
 367
 368                                 $entry_timestamp_fmt = strftime("%Y/%m/%d %H:%M:%S", $entry_timestamp);
 369
 370                                 $entry_title = $item["title"];
 371
 372                                 // strange Magpie workaround
 373                                 $entry_link = $item["link_"];
 374                                 if (!$entry_link) $entry_link = $item["link"];
 375
 376                                 if (!$entry_title) continue;
 377                                 if (!$entry_link) continue;
 378
 379                                 $entry_content = $item["content:escaped"];
 380
 381                                 if (!$entry_content) $entry_content = $item["content:encoded"];
 382                                 if (!$entry_content) $entry_content = $item["content"];
 383                                 if (!$entry_content) $entry_content = $item["summary"];
 384                                 if (!$entry_content) $entry_content = $item["description"];
 385
 386 //                              if (!$entry_content) continue;
 387
 388                                 // WTF
 389                                 if (is_array($entry_content)) {
 390                                         $entry_content = $entry_content["encoded"];
 391                                         if (!$entry_content) $entry_content = $entry_content["escaped"];
 392                                 }
 393
 394 //                              print_r($item);
 395 //                              print_r(htmlspecialchars($entry_content));
 396 //                              print "<br>";
 397
 398                                 $entry_content_unescaped = $entry_content;
 399                                 $content_hash = "SHA1:" . sha1(strip_tags($entry_content));
 400
 401                                 $entry_comments = $item["comments"];
 402
 403                                 $entry_author = db_escape_string($item['dc']['creator']);
 404
 405                                 $entry_guid = db_escape_string($entry_guid);
 406
 407                                 $result = db_query($link, "SELECT id FROM       ttrss_entries
 408                                         WHERE guid = '$entry_guid'");
 409
 410                                 $entry_content = db_escape_string($entry_content);
 411                                 $entry_title = db_escape_string($entry_title);
 412                                 $entry_link = db_escape_string($entry_link);
 413                                 $entry_comments = db_escape_string($entry_comments);
 414
 415                                 $num_comments = db_escape_string($item["slash"]["comments"]);
 416
 417                                 if (!$num_comments) $num_comments = 0;
 418
 419                                 db_query($link, "BEGIN");
 420
 421                                 if (db_num_rows($result) == 0) {
 422
 423                                         // base post entry does not exist, create it
 424
 425                                         $result = db_query($link,
 426                                                 "INSERT INTO ttrss_entries
 427                                                         (title,
 428                                                         guid,
 429                                                         link,
 430                                                         updated,
 431                                                         content,
 432                                                         content_hash,
 433                                                         no_orig_date,
 434                                                         date_entered,
 435                                                         comments,
 436                                                         num_comments,
 437                                                         author)
 438                                                 VALUES
 439                                                         ('$entry_title',
 440                                                         '$entry_guid',
 441                                                         '$entry_link',
 442                                                         '$entry_timestamp_fmt',
 443                                                         '$entry_content',
 444                                                         '$content_hash',
 445                                                         $no_orig_date,
 446                                                         NOW(),
 447                                                         '$entry_comments',
 448                                                         '$num_comments',
 449                                                         '$entry_author')");
 450                                 } else {
 451                                         // we keep encountering the entry in feeds, so we need to
 452                                         // update date_entered column so that we don't get horrible
 453                                         // dupes when the entry gets purged and reinserted again e.g.
 454                                         // in the case of SLOW SLOW OMG SLOW updating feeds
 455
 456                                         $base_entry_id = db_fetch_result($result, 0, "id");
 457
 458                                         db_query($link, "UPDATE ttrss_entries SET date_entered = NOW()
 459                                                 WHERE id = '$base_entry_id'");
 460                                 }
 461
 462                                 // now it should exist, if not - bad luck then
 463
 464                                 $result = db_query($link, "SELECT
 465                                                 id,content_hash,no_orig_date,title,
 466                                                 substring(date_entered,1,19) as date_entered,
 467                                                 substring(updated,1,19) as updated,
 468                                                 num_comments
 469                                         FROM
 470                                                 ttrss_entries
 471                                         WHERE guid = '$entry_guid'");
 472
 473                                 if (db_num_rows($result) == 1) {
 474
 475                                         // this will be used below in update handler
 476                                         $orig_content_hash = db_fetch_result($result, 0, "content_hash");
 477                                         $orig_title = db_fetch_result($result, 0, "title");
 478                                         $orig_num_comments = db_fetch_result($result, 0, "num_comments");
 479                                         $orig_date_entered = strtotime(db_fetch_result($result,
 480                                                 0, "date_entered"));
 481
 482                                         $ref_id = db_fetch_result($result, 0, "id");
 483
 484                                         // check for user post link to main table
 485
 486                                         // do we allow duplicate posts with same GUID in different feeds?
 487                                         if (get_pref($link, "ALLOW_DUPLICATE_POSTS", $owner_uid)) {
 488                                                 $dupcheck_qpart = "AND feed_id = '$feed'";
 489                                         } else {
 490                                                 $dupcheck_qpart = "";
 491                                         }
 492
 493 //                                      error_reporting(0);
 494
 495                                         $filter_name = get_filter_name($entry_title, $entry_content,
 496                                                 $entry_link, $filters);
 497
 498                                         if ($filter_name == "filter") {
 499                                                 continue;
 500                                         }
 501
 502 //                                      error_reporting (DEFAULT_ERROR_LEVEL);
 503
 504                                         $result = db_query($link,
 505                                                 "SELECT ref_id FROM ttrss_user_entries WHERE
 506                                                         ref_id = '$ref_id' AND owner_uid = '$owner_uid'
 507                                                         $dupcheck_qpart");
 508
 509                                         // okay it doesn't exist - create user entry
 510                                         if (db_num_rows($result) == 0) {
 511
 512                                                 if ($filter_name != 'catchup') {
 513                                                         $unread = 'true';
 514                                                         $last_read_qpart = 'NULL';
 515                                                 } else {
 516                                                         $unread = 'false';
 517                                                         $last_read_qpart = 'NOW()';
 518                                                 }
 519
 520                                                 $result = db_query($link,
 521                                                         "INSERT INTO ttrss_user_entries
 522                                                                 (ref_id, owner_uid, feed_id, unread, last_read)
 523                                                         VALUES ('$ref_id', '$owner_uid', '$feed', $unread,
 524                                                                 $last_read_qpart)");
 525                                         }
 526
 527                                         $post_needs_update = false;
 528
 529                                         if (get_pref($link, "UPDATE_POST_ON_CHECKSUM_CHANGE", $owner_uid) &&
 530                                                 ($content_hash != $orig_content_hash)) {
 531                                                 $post_needs_update = true;
 532                                         }
 533
 534                                         if ($orig_title != $entry_title) {
 535                                                 $post_needs_update = true;
 536                                         }
 537
 538                                         if ($orig_num_comments != $num_comments) {
 539                                                 $post_needs_update = true;
 540                                         }
 541
 542 //                                      this doesn't seem to be very reliable
 543 //
 544 //                                      if ($orig_timestamp != $entry_timestamp && !$orig_no_orig_date) {
 545 //                                              $post_needs_update = true;
 546 //                                      }
 547
 548                                         // if post needs update, update it and mark all user entries
 549                                         // linking to this post as updated
 550                                         if ($post_needs_update) {
 551
 552 //                                              print "<!-- post $orig_title needs update : $post_needs_update -->";
 553
 554                                                 db_query($link, "UPDATE ttrss_entries
 555                                                         SET title = '$entry_title', content = '$entry_content',
 556                                                                 num_comments = '$num_comments'
 557                                                         WHERE id = '$ref_id'");
 558
 559                                                 db_query($link, "UPDATE ttrss_user_entries
 560                                                         SET last_read = null WHERE ref_id = '$ref_id' AND unread = false");
 561
 562                                         }
 563                                 }
 564
 565                                 db_query($link, "COMMIT");
 566
 567                                 /* taaaags */
 568                                 // <a href="http://technorati.com/tag/Xorg" rel="tag">Xorg</a>, //
 569
 570                                 $entry_tags = null;
 571
 572                                 preg_match_all("/<a.*?href=.http:\/\/.*?technorati.com\/tag\/([^\"\'>]+)/i",
 573                                         $entry_content_unescaped, $entry_tags);
 574
 575 //                              print "<br>$entry_title : $entry_content_unescaped<br>";
 576 //                              print_r($entry_tags);
 577 //                              print "<br>";
 578
 579                                 $entry_tags = $entry_tags[1];
 580
 581                                 if (count($entry_tags) > 0) {
 582
 583                                         db_query($link, "BEGIN");
 584
 585                                         $result = db_query($link, "SELECT id,int_id
 586                                                 FROM ttrss_entries,ttrss_user_entries
 587                                                 WHERE guid = '$entry_guid'
 588                                                 AND feed_id = '$feed' AND ref_id = id
 589                                                 AND owner_uid = '$owner_uid'");
 590
 591                                         if (db_num_rows($result) == 1) {
 592
 593                                                 $entry_id = db_fetch_result($result, 0, "id");
 594                                                 $entry_int_id = db_fetch_result($result, 0, "int_id");
 595
 596                                                 foreach ($entry_tags as $tag) {
 597                                                         $tag = db_escape_string(strtolower($tag));
 598
 599                                                         $tag = str_replace("+", " ", $tag);
 600                                                         $tag = str_replace("technorati tag: ", "", $tag);
 601
 602                                                         $result = db_query($link, "SELECT id FROM ttrss_tags
 603                                                                 WHERE tag_name = '$tag' AND post_int_id = '$entry_int_id' AND
 604                                                                 owner_uid = '$owner_uid' LIMIT 1");
 605
 606         //                                              print db_fetch_result($result, 0, "id");
 607
 608                                                         if ($result && db_num_rows($result) == 0) {
 609
 610         //                                                      print "tagging $entry_id as $tag<br>";
 611
 612                                                                 db_query($link, "INSERT INTO ttrss_tags
 613                                                                         (owner_uid,tag_name,post_int_id)
 614                                                                         VALUES ('$owner_uid','$tag', '$entry_int_id')");
 615                                                         }
 616                                                 }
 617                                         }
 618                                         db_query($link, "COMMIT");
 619                                 }
 620                         }
 621
 622                         db_query($link, "UPDATE ttrss_feeds
 623                                 SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
 624
 625 //                      db_query($link, "COMMIT");
 626
 627                 } else {
 628                         $error_msg = db_escape_string(magpie_error());
 629                         db_query($link,
 630                                 "UPDATE ttrss_feeds SET last_error = '$error_msg',
 631                                         last_updated = NOW() WHERE id = '$feed'");
 632                 }
 633
 634         }
 635
 636         function print_select($id, $default, $values, $attributes = "") {
 637                 print "<select id=\"$id\" $attributes>";
 638                 foreach ($values as $v) {
 639                         if ($v == $default)
 640                                 $sel = " selected";
 641                          else
 642                                 $sel = "";
 643
 644                         print "<option$sel>$v</option>";
 645                 }
 646                 print "</select>";
 647         }
 648
 649         function get_filter_name($title, $content, $link, $filters) {
 650
 651                 if ($filters["title"]) {
 652                         foreach ($filters["title"] as $filter) {
 653                                 $reg_exp = $filter["reg_exp"];
 654                                 if (preg_match("/$reg_exp/i", $title)) {
 655                                         return $filter["action"];
 656                                 }
 657                         }
 658                 }
 659
 660                 if ($filters["content"]) {
 661                         foreach ($filters["content"] as $filter) {
 662                                 $reg_exp = $filter["reg_exp"];
 663                                 if (preg_match("/$reg_exp/i", $content)) {
 664                                         return $filter["action"];
 665                                 }
 666                         }
 667                 }
 668
 669                 if ($filters["both"]) {
 670                         foreach ($filters["both"] as $filter) {
 671                                 $reg_exp = $filter["reg_exp"];
 672                                 if (preg_match("/$reg_exp/i", $title) ||
 673                                         preg_match("/$reg_exp/i", $content)) {
 674                                         return $filter["action"];
 675                                 }
 676                         }
 677                 }
 678
 679                 if ($filters["link"]) {
 680                         $reg_exp = $filter["reg_exp"];
 681                         foreach ($filters["link"] as $filter) {
 682                                 $reg_exp = $filter["reg_exp"];
 683                                 if (preg_match("/$reg_exp/i", $link)) {
 684                                         return $filter["action"];
 685                                 }
 686                         }
 687                 }
 688
 689                 return false;
 690         }
 691
 692         function printFeedEntry($feed_id, $class, $feed_title, $unread, $icon_file, $link) {
 693
 694                 if (file_exists($icon_file) && filesize($icon_file) > 0) {
 695                                 $feed_icon = "<img id=\"FIMG-$feed_id\" src=\"$icon_file\">";
 696                 } else {
 697                         $feed_icon = "<img id=\"FIMG-$feed_id\" src=\"images/blank_icon.gif\">";
 698                 }
 699
 700                 $feed = "<a href=\"javascript:viewfeed('$feed_id', 0);\">$feed_title</a>";
 701
 702                 print "<li id=\"FEEDR-$feed_id\" class=\"$class\">";
 703                 if (get_pref($link, 'ENABLE_FEED_ICONS')) {
 704                         print "$feed_icon";
 705                 }
 706
 707                 print "<span id=\"FEEDN-$feed_id\">$feed</span>";
 708
 709                 if ($unread != 0) {
 710                         $fctr_class = "";
 711                 } else {
 712                         $fctr_class = "class=\"invisible\"";
 713                 }
 714
 715                 print "<span $fctr_class id=\"FEEDCTR-$feed_id\">
 716                          (<span id=\"FEEDU-$feed_id\">$unread</span>)</span>";
 717
 718                 print "</li>";
 719
 720         }
 721
 722         function getmicrotime() {
 723                 list($usec, $sec) = explode(" ",microtime());
 724                 return ((float)$usec + (float)$sec);
 725         }
 726
 727         function print_radio($id, $default, $values, $attributes = "") {
 728                 foreach ($values as $v) {
 729
 730                         if ($v == $default)
 731                                 $sel = "checked";
 732                          else
 733                                 $sel = "";
 734
 735                         if ($v == "Yes") {
 736                                 $sel .= " value=\"1\"";
 737                         } else {
 738                                 $sel .= " value=\"0\"";
 739                         }
 740
 741                         print "<input class=\"noborder\"
 742                                 type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 743
 744                 }
 745         }
 746
 747         function initialize_user_prefs($link, $uid) {
 748
 749                 $uid = db_escape_string($uid);
 750
 751                 db_query($link, "BEGIN");
 752
 753                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 754
 755                 $u_result = db_query($link, "SELECT pref_name
 756                         FROM ttrss_user_prefs WHERE owner_uid = '$uid'");
 757
 758                 $active_prefs = array();
 759
 760                 while ($line = db_fetch_assoc($u_result)) {
 761                         array_push($active_prefs, $line["pref_name"]);
 762                 }
 763
 764                 while ($line = db_fetch_assoc($result)) {
 765                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 766 //                              print "adding " . $line["pref_name"] . "<br>";
 767
 768                                 db_query($link, "INSERT INTO ttrss_user_prefs
 769                                         (owner_uid,pref_name,value) VALUES
 770                                         ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 771
 772                         }
 773                 }
 774
 775                 db_query($link, "COMMIT");
 776
 777         }
 778
 779         function authenticate_user($link, $login, $password) {
 780
 781                 $pwd_hash = 'SHA1:' . sha1($password);
 782
 783                 $result = db_query($link, "SELECT id,login,access_level FROM ttrss_users WHERE
 784                         login = '$login' AND pwd_hash = '$pwd_hash'");
 785
 786                 if (db_num_rows($result) == 1) {
 787                         $_SESSION["uid"] = db_fetch_result($result, 0, "id");
 788                         $_SESSION["name"] = db_fetch_result($result, 0, "login");
 789                         $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 790
 791                         db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 792                                 $_SESSION["uid"]);
 793
 794                         $user_theme = get_user_theme_path($link);
 795
 796                         $_SESSION["theme"] = $user_theme;
 797                         $_SESSION["ip_address"] = $_SERVER["REMOTE_ADDR"];
 798
 799                         initialize_user_prefs($link, $_SESSION["uid"]);
 800
 801                         return true;
 802                 }
 803
 804                 return false;
 805
 806         }
 807
 808         function make_password($length = 8) {
 809
 810                 $password = "";
 811                 $possible = "0123456789abcdfghjkmnpqrstvwxyzABCDFGHJKMNPQRSTVWXYZ";
 812
 813         $i = 0;
 814
 815                 while ($i < $length) {
 816                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 817
 818                         if (!strstr($password, $char)) {
 819                                 $password .= $char;
 820                                 $i++;
 821                         }
 822                 }
 823                 return $password;
 824         }
 825
 826         // this is called after user is created to initialize default feeds, labels
 827         // or whatever else
 828
 829         // user preferences are checked on every login, not here
 830
 831         function initialize_user($link, $uid) {
 832
 833                 db_query($link, "insert into ttrss_labels (owner_uid,sql_exp,description)
 834                         values ('$uid','unread = true', 'Unread articles')");
 835
 836                 db_query($link, "insert into ttrss_labels (owner_uid,sql_exp,description)
 837                         values ('$uid','last_read is null and unread = false', 'Updated articles')");
 838
 839                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 840                         values ('$uid', 'Tiny Tiny RSS: New Releases',
 841                         'http://tt-rss.spb.ru/releases.rss')");
 842
 843         }
 844
 845         function logout_user() {
 846                 session_destroy();
 847                 if (isset($_COOKIE[session_name()])) {
 848                    setcookie(session_name(), '', time()-42000, '/');
 849                 }
 850         }
 851
 852         function get_script_urlpath() {
 853                 return preg_replace('/\/[^\/]*$/', "", $_SERVER["REQUEST_URI"]);
 854         }
 855
 856         function get_login_redirect() {
 857                 $server = $_SERVER["SERVER_NAME"];
 858
 859                 if (ENABLE_LOGIN_SSL) {
 860                         $protocol = "https";
 861                 } else {
 862                         $protocol = "http";
 863                 }
 864
 865                 $url_path = get_script_urlpath();
 866
 867                 $redirect_uri = "$protocol://$server$url_path/login.php";
 868
 869                 return $redirect_uri;
 870         }
 871
 872         function validate_session($link) {
 873                 if (SESSION_CHECK_ADDRESS && !DATABASE_BACKED_SESSIONS && $_SESSION["uid"]) {
 874                         if ($_SESSION["ip_address"]) {
 875                                 if ($_SESSION["ip_address"] != $_SERVER["REMOTE_ADDR"]) {
 876                                         return false;
 877                                 }
 878                         }
 879                 }
 880                 return true;
 881         }
 882
 883         function basic_nosid_redirect_check() {
 884                 if (!SINGLE_USER_MODE) {
 885                         if (!$_COOKIE["ttrss_sid"]) {
 886                                 $redirect_uri = get_login_redirect();
 887                                 $return_to = preg_replace('/.*?\//', '', $_SERVER["REQUEST_URI"]);
 888                                 header("Location: $redirect_uri?rt=$return_to");
 889                                 exit;
 890                         }
 891                 }
 892         }
 893
 894         function login_sequence($link) {
 895                 if (!SINGLE_USER_MODE) {
 896
 897                         if (!validate_session($link)) {
 898                                 logout_user();
 899                                 $redirect_uri = get_login_redirect();
 900                                 $return_to = preg_replace('/.*?\//', '', $_SERVER["REQUEST_URI"]);
 901                                 header("Location: $redirect_uri?rt=$return_to");
 902                                 exit;
 903                         }
 904
 905                         if (!USE_HTTP_AUTH) {
 906                                 if (!$_SESSION["uid"]) {
 907                                         $redirect_uri = get_login_redirect();
 908                                         $return_to = preg_replace('/.*?\//', '', $_SERVER["REQUEST_URI"]);
 909                                         header("Location: $redirect_uri?rt=$return_to");
 910                                         exit;
 911                                 }
 912                         } else {
 913                                 if (!$_SESSION["uid"]) {
 914                                         if (!$_SERVER["PHP_AUTH_USER"]) {
 915
 916                                                 header('WWW-Authenticate: Basic realm="Tiny Tiny RSS"');
 917                                                 header('HTTP/1.0 401 Unauthorized');
 918                                                 exit;
 919
 920                                         } else {
 921                                                 $auth_result = authenticate_user($link,
 922                                                         $_SERVER["PHP_AUTH_USER"], $_SERVER["PHP_AUTH_PW"]);
 923
 924                                                 if (!$auth_result) {
 925                                                         header('WWW-Authenticate: Basic realm="Tiny Tiny RSS"');
 926                                                         header('HTTP/1.0 401 Unauthorized');
 927                                                         exit;
 928                                                 }
 929                                         }
 930                                 }
 931                         }
 932                 } else {
 933                         $_SESSION["uid"] = 1;
 934                         $_SESSION["name"] = "admin";
 935                         initialize_user_prefs($link, 1);
 936                 }
 937         }
 938
 939         function truncate_string($str, $max_len) {
 940                 if (mb_strlen($str, "utf-8") > $max_len - 3) {
 941                         return mb_substr($str, 0, $max_len, "utf-8") . "...";
 942                 } else {
 943                         return $str;
 944                 }
 945         }
 946
 947         function get_user_theme_path($link) {
 948                 $result = db_query($link, "SELECT theme_path
 949                         FROM
 950                                 ttrss_themes,ttrss_users
 951                         WHERE ttrss_themes.id = theme_id AND ttrss_users.id = " . $_SESSION["uid"]);
 952                 if (db_num_rows($result) != 0) {
 953                         return db_fetch_result($result, 0, "theme_path");
 954                 } else {
 955                         return null;
 956                 }
 957         }
 958
 959         function smart_date_time($timestamp) {
 960                 if (date("Y.m.d", $timestamp) == date("Y.m.d")) {
 961                         return date("G:i", $timestamp);
 962                 } else if (date("Y", $timestamp) == date("Y")) {
 963                         return date("M d, G:i", $timestamp);
 964                 } else {
 965                         return date("Y/m/d G:i", $timestamp);
 966                 }
 967         }
 968
 969         function smart_date($timestamp) {
 970                 if (date("Y.m.d", $timestamp) == date("Y.m.d")) {
 971                         return "Today";
 972                 } else if (date("Y", $timestamp) == date("Y")) {
 973                         return date("D m", $timestamp);
 974                 } else {
 975                         return date("Y/m/d", $timestamp);
 976                 }
 977         }
 978
 979         function sql_bool_to_string($s) {
 980                 if ($s == "t" || $s == "1") {
 981                         return "true";
 982                 } else {
 983                         return "false";
 984                 }
 985         }
 986
 987         function sql_bool_to_bool($s) {
 988                 if ($s == "t" || $s == "1") {
 989                         return true;
 990                 } else {
 991                         return false;
 992                 }
 993         }
 994
 995
 996         function toggleEvenOdd($a) {
 997                 if ($a == "even")
 998                         return "odd";
 999                 else
1000                         return "even";
1001         }
1002
1003         function sanity_check($link) {
1004
1005                 $error_code = 0;
1006                 $result = db_query($link, "SELECT schema_version FROM ttrss_version");
1007                 $schema_version = db_fetch_result($result, 0, "schema_version");
1008
1009                 if ($schema_version != SCHEMA_VERSION) {
1010                         $error_code = 5;
1011                 }
1012
1013                 if ($error_code != 0) {
1014                         print "<error error-code='$error_code'/>";
1015                         return false;
1016                 } else {
1017                         return true;
1018                 }
1019         }
1020
1021         function file_is_locked($filename) {
1022                 error_reporting(0);
1023                 $fp = fopen($filename, "r");
1024                 error_reporting(DEFAULT_ERROR_LEVEL);
1025                 if ($fp) {
1026                         if (flock($fp, LOCK_EX | LOCK_NB)) {
1027                                 flock($fp, LOCK_UN);
1028                                 fclose($fp);
1029                                 return false;
1030                         }
1031                         fclose($fp);
1032                         return true;
1033                 }
1034                 return false;
1035         }
1036
1037         function make_lockfile($filename) {
1038                 $fp = fopen($filename, "w");
1039
1040                 if (flock($fp, LOCK_EX | LOCK_NB)) {
1041                         return $fp;
1042                 } else {
1043                         return false;
1044                 }
1045         }
1046
1047 ?>