functions.php

   1 <?
   2         session_start();
   3
   4         require_once 'config.php';
   5         require_once 'db-prefs.php';
   6
   7 //      $_SESSION["uid"] = PLACEHOLDER_UID; // FIXME: placeholder
   8 //      $_SESSION["name"] = PLACEHOLDER_NAME;
   9
  10         define('MAGPIE_OUTPUT_ENCODING', 'UTF-8');
  11
  12         function purge_old_posts($link) {
  13
  14                 $user_id = $_SESSION["uid"];
  15
  16                 $result = db_query($link, "SELECT id,purge_interval FROM ttrss_feeds
  17                         WHERE owner_uid = '$user_id'");
  18
  19                 while ($line = db_fetch_assoc($result)) {
  20
  21                         $feed_id = $line["id"];
  22                         $purge_interval = $line["purge_interval"];
  23
  24                         if ($purge_interval == 0) $purge_interval = get_pref($link, 'PURGE_OLD_DAYS');
  25
  26                         if ($purge_interval > 0) {
  27
  28                                 if (DB_TYPE == "pgsql") {
  29                                         db_query($link, "DELETE FROM ttrss_entries WHERE
  30                                                 marked = false AND feed_id = '$feed_id' AND
  31                                                 date_entered < NOW() - INTERVAL '$purge_interval days'");
  32                                 } else {
  33                                         db_query($link, "DELETE FROM ttrss_entries WHERE
  34                                                 marked = false AND feed_id = '$feed_id' AND
  35                                                 date_entered < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)");
  36                                 }
  37                         }
  38                 }
  39         }
  40
  41         function update_all_feeds($link, $fetch) {
  42
  43                 if (WEB_DEMO_MODE) return;
  44
  45                 if (get_pref($link, 'DAEMON_REFRESH_ONLY')) {
  46                         if (!$_GET["daemon"]) {
  47                                 return;
  48                         }
  49                 }
  50
  51                 db_query($link, "BEGIN");
  52
  53                 $user_id = $_SESSION["uid"];
  54
  55                 $result = db_query($link, "SELECT feed_url,id,
  56                         substring(last_updated,1,19) as last_updated,
  57                         update_interval FROM ttrss_feeds WHERE owner_uid = '$user_id'");
  58
  59                 while ($line = db_fetch_assoc($result)) {
  60                         $upd_intl = $line["update_interval"];
  61
  62                         if (!$upd_intl || $upd_intl == 0) {
  63                                 $upd_intl = get_pref($link, 'DEFAULT_UPDATE_INTERVAL');
  64                         }
  65
  66                         if (!$line["last_updated"] ||
  67                                 time() - strtotime($line["last_updated"]) > ($upd_intl * 60)) {
  68
  69                                 update_rss_feed($link, $line["feed_url"], $line["id"]);
  70                         }
  71                 }
  72
  73                 purge_old_posts($link);
  74
  75                 db_query($link, "COMMIT");
  76
  77         }
  78
  79         function check_feed_favicon($feed_url, $feed, $link) {
  80                 $feed_url = str_replace("http://", "", $feed_url);
  81                 $feed_url = preg_replace("/\/.*$/", "", $feed_url);
  82
  83                 $icon_url = "http://$feed_url/favicon.ico";
  84                 $icon_file = ICONS_DIR . "/$feed.ico";
  85
  86                 if (!file_exists($icon_file)) {
  87
  88                         error_reporting(0);
  89                         $r = fopen($icon_url, "r");
  90                         error_reporting (E_ERROR | E_WARNING | E_PARSE);
  91
  92                         if ($r) {
  93                                 $tmpfname = tempnam("/tmp", "ttrssicon");
  94
  95                                 $t = fopen($tmpfname, "w");
  96
  97                                 while (!feof($r)) {
  98                                         $buf = fread($r, 16384);
  99                                         fwrite($t, $buf);
 100                                 }
 101
 102                                 fclose($r);
 103                                 fclose($t);
 104
 105                                 error_reporting(0);
 106                                 if (!rename($tmpfname, $icon_file)) {
 107                                         unlink($tmpfname);
 108                                 }
 109
 110                                 chmod($icon_file, 0644);
 111
 112                                 error_reporting (E_ERROR | E_WARNING | E_PARSE);
 113
 114                         }
 115                 }
 116         }
 117
 118         function update_rss_feed($link, $feed_url, $feed) {
 119
 120                 if (WEB_DEMO_MODE) return;
 121
 122                 $feed = db_escape_string($feed);
 123
 124                 error_reporting(0);
 125                 $rss = fetch_rss($feed_url);
 126
 127                 error_reporting (E_ERROR | E_WARNING | E_PARSE);
 128
 129                 db_query($link, "BEGIN");
 130
 131                 $feed = db_escape_string($feed);
 132
 133                 if ($rss) {
 134
 135                         if (get_pref($link, 'ENABLE_FEED_ICONS')) {
 136                                 check_feed_favicon($feed_url, $feed, $link);
 137                         }
 138
 139                         $result = db_query($link, "SELECT title,icon_url FROM ttrss_feeds WHERE id = '$feed'");
 140
 141                         $registered_title = db_fetch_result($result, 0, "title");
 142                         $orig_icon_url = db_fetch_result($result, 0, "icon_url");
 143
 144                         if (!$registered_title) {
 145                                 $feed_title = db_escape_string($rss->channel["title"]);
 146                                 db_query($link, "UPDATE ttrss_feeds SET title = '$feed_title' WHERE id = '$feed'");
 147                         }
 148
 149 //                      print "I: " . $rss->channel["image"]["url"];
 150
 151                         $icon_url = $rss->image["url"];
 152
 153                         if ($icon_url && !$orig_icon_url) {
 154                                 $icon_url = db_escape_string($icon_url);
 155                                 db_query($link, "UPDATE ttrss_feeds SET icon_url = '$icon_url' WHERE id = '$feed'");
 156                         }
 157
 158
 159                         $filters = array();
 160
 161                         $result = db_query($link, "SELECT reg_exp,
 162                                 (SELECT name FROM ttrss_filter_types
 163                                         WHERE id = filter_type) as name
 164                                 FROM ttrss_filters WHERE owner_uid = ".$_SESSION["uid"]);
 165
 166                         while ($line = db_fetch_assoc($result)) {
 167                                 if (!$filters[$line["name"]]) $filters[$line["name"]] = array();
 168                                 array_push($filters[$line["name"]], $line["reg_exp"]);
 169                         }
 170
 171                         foreach ($rss->items as $item) {
 172
 173                                 $entry_guid = $item["id"];
 174
 175                                 if (!$entry_guid) $entry_guid = $item["guid"];
 176                                 if (!$entry_guid) $entry_guid = $item["link"];
 177
 178                                 if (!$entry_guid) continue;
 179
 180                                 $entry_timestamp = "";
 181
 182                                 $rss_2_date = $item['pubdate'];
 183                                 $rss_1_date = $item['dc']['date'];
 184                                 $atom_date = $item['issued'];
 185
 186                                 if ($atom_date != "") $entry_timestamp = parse_w3cdtf($atom_date);
 187                                 if ($rss_1_date != "") $entry_timestamp = parse_w3cdtf($rss_1_date);
 188                                 if ($rss_2_date != "") $entry_timestamp = strtotime($rss_2_date);
 189
 190                                 if ($entry_timestamp == "") {
 191                                         $entry_timestamp = time();
 192                                         $no_orig_date = 'true';
 193                                 } else {
 194                                         $no_orig_date = 'false';
 195                                 }
 196
 197                                 $entry_timestamp_fmt = strftime("%Y/%m/%d %H:%M:%S", $entry_timestamp);
 198
 199                                 $entry_title = $item["title"];
 200                                 $entry_link = $item["link"];
 201
 202                                 if (!$entry_title) continue;
 203                                 if (!$entry_link) continue;
 204
 205                                 $entry_content = $item["content:escaped"];
 206
 207                                 if (!$entry_content) $entry_content = $item["content:encoded"];
 208                                 if (!$entry_content) $entry_content = $item["content"];
 209                                 if (!$entry_content) $entry_content = $item["description"];
 210
 211 //                              if (!$entry_content) continue;
 212
 213                                 // WTF
 214                                 if (is_array($entry_content)) {
 215                                         $entry_content = $entry_content["encoded"];
 216                                         if (!$entry_content) $entry_content = $entry_content["escaped"];
 217                                 }
 218
 219 //                              print_r($item);
 220 //                              print_r($entry_content);
 221
 222                                 $content_hash = "SHA1:" . sha1(strip_tags($entry_content));
 223
 224                                 $entry_comments = $item["comments"];
 225
 226                                 $entry_guid = db_escape_string($entry_guid);
 227
 228                                 $result = db_query($link, "
 229                                         SELECT
 230                                                 id,last_read,no_orig_date,title,feed_id,content_hash,
 231                                                 substring(updated,1,19) as updated
 232                                         FROM
 233                                                 ttrss_entries
 234                                         WHERE
 235                                                 guid = '$entry_guid' AND owner_uid = " . $_SESSION["uid"]);
 236
 237 //                              print db_num_rows($result) . "$entry_guid<br/>";
 238
 239                                 if (db_num_rows($result) == 0) {
 240
 241                                         error_reporting(0);
 242                                         if (is_filtered($entry_title, $entry_content, $filters)) {
 243                                                 continue;
 244                                         }
 245                                         error_reporting (E_ERROR | E_WARNING | E_PARSE);
 246
 247                                         //$entry_guid = db_escape_string($entry_guid);
 248                                         $entry_content = db_escape_string($entry_content);
 249                                         $entry_title = db_escape_string($entry_title);
 250                                         $entry_link = db_escape_string($entry_link);
 251                                         $entry_comments = db_escape_string($entry_comments);
 252
 253                                         $query = "INSERT
 254                                                 INTO ttrss_entries
 255                                                         (title,
 256                                                         guid,
 257                                                         link,
 258                                                         updated,
 259                                                         content,
 260                                                         content_hash,
 261                                                         feed_id,
 262                                                         comments,
 263                                                         no_orig_date,
 264                                                         date_entered,
 265                                                         owner_uid)
 266                                                 VALUES
 267                                                         ('$entry_title',
 268                                                         '$entry_guid',
 269                                                         '$entry_link',
 270                                                         '$entry_timestamp_fmt',
 271                                                         '$entry_content',
 272                                                         '$content_hash',
 273                                                         '$feed',
 274                                                         '$entry_comments',
 275                                                         $no_orig_date,
 276                                                         NOW(),".$_SESSION["uid"].")";
 277
 278                                         $result = db_query($link, $query);
 279
 280                                 } else {
 281
 282                                         $orig_entry_id = db_fetch_result($result, 0, "id");
 283                                         $orig_feed_id = db_fetch_result($result, 0, "feed_id");
 284
 285 //                                      print "OED: $orig_entry_id; OID: $orig_feed_id ; FID: $feed<br>";
 286
 287                                         if ($orig_feed_id != $feed) {
 288 //                                              print "<p>GUID $entry_guid: update from different feed ($orig_feed_id, $feed): $entry_guid [$entry_title]";
 289                                                 continue;
 290                                         }
 291
 292                                         $entry_is_modified = false;
 293
 294                                         $orig_timestamp = strtotime(db_fetch_result($result, 0, "updated"));
 295
 296                                         $orig_content_hash = db_fetch_result($result, 0, "content_hash");
 297                                         $orig_last_read = db_fetch_result($result, 0, "last_read");
 298                                         $orig_no_orig_date = db_fetch_result($result, 0, "no_orig_date");
 299                                         $orig_title = db_fetch_result($result, 0, "title");
 300
 301                                         $last_read_qpart = "";
 302
 303                                         if ($orig_content_hash != $content_hash) {
 304 //                                              print "$orig_content_hash :: $content_hash<br>";
 305
 306                                                 if (get_pref($link, 'UPDATE_POST_ON_CHECKSUM_CHANGE')) {
 307                                                         $last_read_qpart = 'last_read = null,';
 308                                                 }
 309                                                 $entry_is_modified = true;
 310                                         }
 311
 312                                         if ($orig_title != $entry_title) {
 313                                                 $entry_is_modified = true;
 314                                         }
 315
 316                                         if ($orig_timestamp != $entry_timestamp && !$orig_no_orig_date) {
 317                                                 $entry_is_modified = true;
 318                                         }
 319
 320                                         if ($entry_is_modified) {
 321
 322 //                                              print "$entry_guid Modified!<br>";
 323
 324                                                 $entry_comments = db_escape_string($entry_comments);
 325                                                 $entry_content = db_escape_string($entry_content);
 326                                                 $entry_title = db_escape_string($entry_title);
 327                                                 $entry_link = db_escape_string($entry_link);
 328
 329                                                 $query = "UPDATE ttrss_entries
 330                                                         SET
 331                                                                 $last_read_qpart
 332                                                                 title = '$entry_title',
 333                                                                 link = '$entry_link',
 334                                                                 updated = '$entry_timestamp_fmt',
 335                                                                 content = '$entry_content',
 336                                                                 comments = '$entry_comments',
 337                                                                 content_hash = '$content_hash'
 338                                                         WHERE
 339                                                                 id = '$orig_entry_id'";
 340
 341                                                 $result = db_query($link, $query);
 342                                         }
 343                                 }
 344
 345                                 /* taaaags */
 346                                 // <a href="http://technorati.com/tag/Xorg" rel="tag">Xorg</a>, //
 347
 348                                 $entry_tags = null;
 349
 350                                 preg_match_all("/<a.*?rel=.tag.*?>([^>]+)<\/a>/i", $entry_content,
 351                                         $entry_tags);
 352
 353                                 $entry_tags = $entry_tags[1];
 354
 355                                 if (count($entry_tags) > 0) {
 356
 357                                         $result = db_query($link, "SELECT id FROM ttrss_entries
 358                                                 WHERE guid = '$entry_guid' AND owner_uid = " . $_SESSION["uid"]);
 359
 360                                         if (!$result || db_num_rows($result) != 1) {
 361                                                 return;
 362                                         }
 363
 364                                         $entry_id = db_fetch_result($result, 0, "id");
 365
 366                                         foreach ($entry_tags as $tag) {
 367                                                 $tag = db_escape_string(strtolower($tag));
 368
 369                                                 $result = db_query($link, "SELECT id FROM ttrss_tags
 370                                                         WHERE tag_name = '$tag' AND post_id = '$entry_id' AND
 371                                                         owner_uid = ".$_SESSION["uid"]." LIMIT 1");
 372
 373 //                                              print db_fetch_result($result, 0, "id");
 374
 375                                                 if ($result && db_num_rows($result) == 0) {
 376
 377 //                                                      print "tagging $entry_id as $tag<br>";
 378
 379                                                         db_query($link, "INSERT INTO ttrss_tags (owner_uid,tag_name,post_id)
 380                                                                 VALUES ('".$_SESSION["uid"]."','$tag', '$entry_id')");
 381                                                 }
 382                                         }
 383                                 }
 384                         }
 385
 386                         db_query($link, "UPDATE ttrss_feeds
 387                                 SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
 388
 389                 } else {
 390                         $error_msg = db_escape_string(magpie_error());
 391                         db_query($link,
 392                                 "UPDATE ttrss_feeds SET last_error = '$error_msg',
 393                                         last_updated = NOW() WHERE id = '$feed'");
 394                 }
 395
 396                 db_query($link, "COMMIT");
 397
 398         }
 399
 400         function print_select($id, $default, $values, $attributes = "") {
 401                 print "<select id=\"$id\" $attributes>";
 402                 foreach ($values as $v) {
 403                         if ($v == $default)
 404                                 $sel = " selected";
 405                          else
 406                                 $sel = "";
 407
 408                         print "<option$sel>$v</option>";
 409                 }
 410                 print "</select>";
 411         }
 412
 413         function is_filtered($title, $content, $filters) {
 414
 415                 if ($filters["title"]) {
 416                         foreach ($filters["title"] as $title_filter) {
 417                                 if (preg_match("/$title_filter/i", $title))
 418                                         return true;
 419                         }
 420                 }
 421
 422                 if ($filters["content"]) {
 423                         foreach ($filters["content"] as $content_filter) {
 424                                 if (preg_match("/$content_filter/i", $content))
 425                                         return true;
 426                         }
 427                 }
 428
 429                 if ($filters["both"]) {
 430                         foreach ($filters["both"] as $filter) {
 431                                 if (preg_match("/$filter/i", $title) || preg_match("/$filter/i", $content))
 432                                         return true;
 433                         }
 434                 }
 435
 436                 return false;
 437         }
 438
 439         function printFeedEntry($feed_id, $class, $feed_title, $unread, $icon_file, $link) {
 440
 441                 if (file_exists($icon_file) && filesize($icon_file) > 0) {
 442                                 $feed_icon = "<img src=\"$icon_file\">";
 443                 } else {
 444                         $feed_icon = "<img src=\"images/blank_icon.gif\">";
 445                 }
 446
 447                 $feed = "<a href=\"javascript:viewfeed('$feed_id', 0);\">$feed_title</a>";
 448
 449                 print "<li id=\"FEEDR-$feed_id\" class=\"$class\">";
 450                 if (get_pref($link, 'ENABLE_FEED_ICONS')) {
 451                         print "$feed_icon";
 452                 }
 453
 454                 print "<span id=\"FEEDN-$feed_id\">$feed</span>";
 455
 456                 if ($unread != 0) {
 457                         $fctr_class = "";
 458                 } else {
 459                         $fctr_class = "class=\"invisible\"";
 460                 }
 461
 462                 print "<span $fctr_class id=\"FEEDCTR-$feed_id\">
 463                          (<span id=\"FEEDU-$feed_id\">$unread</span>)</span>";
 464
 465                 print "</li>";
 466
 467         }
 468
 469         function getmicrotime() {
 470                 list($usec, $sec) = explode(" ",microtime());
 471                 return ((float)$usec + (float)$sec);
 472         }
 473
 474         function print_radio($id, $default, $values, $attributes = "") {
 475                 foreach ($values as $v) {
 476
 477                         if ($v == $default)
 478                                 $sel = "checked";
 479                          else
 480                                 $sel = "";
 481
 482                         if ($v == "Yes") {
 483                                 $sel .= " value=\"1\"";
 484                         } else {
 485                                 $sel .= " value=\"0\"";
 486                         }
 487
 488                         print "<input type=\"radio\" $sel $attributes name=\"$id\">&nbsp;$v&nbsp;";
 489
 490                 }
 491         }
 492
 493         function initialize_user_prefs($link, $uid) {
 494
 495                 $uid = db_escape_string($uid);
 496
 497                 db_query($link, "BEGIN");
 498
 499                 $result = db_query($link, "SELECT pref_name,def_value FROM ttrss_prefs");
 500
 501                 $u_result = db_query($link, "SELECT pref_name
 502                         FROM ttrss_user_prefs WHERE owner_uid = '$uid'");
 503
 504                 $active_prefs = array();
 505
 506                 while ($line = db_fetch_assoc($u_result)) {
 507                         array_push($active_prefs, $line["pref_name"]);
 508                 }
 509
 510                 while ($line = db_fetch_assoc($result)) {
 511                         if (array_search($line["pref_name"], $active_prefs) === FALSE) {
 512 //                              print "adding " . $line["pref_name"] . "<br>";
 513
 514                                 db_query($link, "INSERT INTO ttrss_user_prefs
 515                                         (owner_uid,pref_name,value) VALUES
 516                                         ('$uid', '".$line["pref_name"]."','".$line["def_value"]."')");
 517
 518                         }
 519                 }
 520
 521                 db_query($link, "COMMIT");
 522
 523         }
 524
 525         function authenticate_user($link, $login, $password) {
 526
 527                 $pwd_hash = 'SHA1:' . sha1($password);
 528
 529                 $result = db_query($link, "SELECT id,login,access_level FROM ttrss_users WHERE
 530                         login = '$login' AND (pwd_hash = '$password' OR pwd_hash = '$pwd_hash')");
 531
 532                 if (db_num_rows($result) == 1) {
 533                         $_SESSION["uid"] = db_fetch_result($result, 0, "id");
 534                         $_SESSION["name"] = db_fetch_result($result, 0, "login");
 535                         $_SESSION["access_level"] = db_fetch_result($result, 0, "access_level");
 536
 537                         db_query($link, "UPDATE ttrss_users SET last_login = NOW() WHERE id = " .
 538                                 $_SESSION["uid"]);
 539
 540                         return true;
 541                 }
 542
 543                 return false;
 544
 545         }
 546
 547         function http_authenticate_user($link) {
 548
 549                 if (!$_SERVER['PHP_AUTH_USER']) {
 550
 551                         header('WWW-Authenticate: Basic realm="Tiny Tiny RSS"');
 552                         header('HTTP/1.0 401 Unauthorized');
 553                         print "<h1>401 Unathorized</h1>";
 554                         exit;
 555
 556                 } else {
 557
 558                         $login = db_escape_string($_SERVER['PHP_AUTH_USER']);
 559                         $password = db_escape_string($_SERVER['PHP_AUTH_PW']);
 560
 561                         return authenticate_user($link, $login, $password);
 562                 }
 563         }
 564
 565         function make_password($length = 8) {
 566
 567                 $password = "";
 568                 $possible = "0123456789bcdfghjkmnpqrstvwxyz";
 569
 570                 $i = 0;
 571
 572                 while ($i < $length) {
 573                         $char = substr($possible, mt_rand(0, strlen($possible)-1), 1);
 574
 575                         if (!strstr($password, $char)) {
 576                                 $password .= $char;
 577                                 $i++;
 578                         }
 579                 }
 580                 return $password;
 581         }
 582
 583         // this is called after user is created to initialize default feeds, labels
 584         // or whatever else
 585
 586         // user preferences are checked on every login, not here
 587
 588         function initialize_user($link, $uid) {
 589
 590                 db_query($link, "insert into ttrss_labels (owner_uid,sql_exp,description)
 591                         values ('$uid','unread = true', 'Unread articles')");
 592
 593                 db_query($link, "insert into ttrss_labels (owner_uid,sql_exp,description)
 594                         values ('$uid','last_read is null and unread = false', 'Updated articles')");
 595
 596                 db_query($link, "insert into ttrss_feeds (owner_uid,title,feed_url)
 597                         values ('$uid', 'Tiny Tiny RSS Dev. Feed',
 598                         'http://bah.spb.su/darcsweb/darcsweb.cgi?r=tt-rss;a=rss')");
 599
 600                 }
 601
 602 ?>