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