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add support for http 304 not modified (no timestamp calculation bullshit like last...
[tt-rss.git] / classes / rssutils.php
1 <?php
2 class RSSUtils {
3 static function calculate_article_hash($article, $pluginhost) {
4 $tmp = "";
5
6 foreach ($article as $k => $v) {
7 if ($k != "feed" && isset($v)) {
8 $x = strip_tags(is_array($v) ? implode(",", $v) : $v);
9
10 //_debug("$k:" . sha1($x) . ":" . htmlspecialchars($x), true);
11
12 $tmp .= sha1("$k:" . sha1($x));
13 }
14 }
15
16 return sha1(implode(",", $pluginhost->get_plugin_names()) . $tmp);
17 }
18
19 static function update_feedbrowser_cache() {
20
21 $result = db_query("SELECT feed_url, site_url, title, COUNT(id) AS subscribers
22 FROM ttrss_feeds WHERE feed_url NOT IN (SELECT feed_url FROM ttrss_feeds
23 WHERE private IS true OR auth_login != '' OR auth_pass != '' OR feed_url LIKE '%:%@%/%')
24 GROUP BY feed_url, site_url, title ORDER BY subscribers DESC LIMIT 1000");
25
26 db_query("BEGIN");
27
28 db_query("DELETE FROM ttrss_feedbrowser_cache");
29
30 $count = 0;
31
32 while ($line = db_fetch_assoc($result)) {
33 $subscribers = db_escape_string($line["subscribers"]);
34 $feed_url = db_escape_string($line["feed_url"]);
35 $title = db_escape_string($line["title"]);
36 $site_url = db_escape_string($line["site_url"]);
37
38 $tmp_result = db_query("SELECT subscribers FROM
39 ttrss_feedbrowser_cache WHERE feed_url = '$feed_url'");
40
41 if (db_num_rows($tmp_result) == 0) {
42
43 db_query("INSERT INTO ttrss_feedbrowser_cache
44 (feed_url, site_url, title, subscribers) VALUES ('$feed_url',
45 '$site_url', '$title', '$subscribers')");
46
47 ++$count;
48
49 }
50
51 }
52
53 db_query("COMMIT");
54
55 return $count;
56
57 }
58
59 static function update_daemon_common($limit = DAEMON_FEED_LIMIT, $debug = true) {
60 $schema_version = get_schema_version();
61
62 if ($schema_version != SCHEMA_VERSION) {
63 die("Schema version is wrong, please upgrade the database.\n");
64 }
65
66 if (!SINGLE_USER_MODE && DAEMON_UPDATE_LOGIN_LIMIT > 0) {
67 if (DB_TYPE == "pgsql") {
68 $login_thresh_qpart = "AND ttrss_users.last_login >= NOW() - INTERVAL '".DAEMON_UPDATE_LOGIN_LIMIT." days'";
69 } else {
70 $login_thresh_qpart = "AND ttrss_users.last_login >= DATE_SUB(NOW(), INTERVAL ".DAEMON_UPDATE_LOGIN_LIMIT." DAY)";
71 }
72 } else {
73 $login_thresh_qpart = "";
74 }
75
76 if (DB_TYPE == "pgsql") {
77 $update_limit_qpart = "AND ((
78 ttrss_feeds.update_interval = 0
79 AND ttrss_user_prefs.value != '-1'
80 AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_user_prefs.value || ' minutes') AS INTERVAL)
81 ) OR (
82 ttrss_feeds.update_interval > 0
83 AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_feeds.update_interval || ' minutes') AS INTERVAL)
84 ) OR (ttrss_feeds.last_updated IS NULL
85 AND ttrss_user_prefs.value != '-1')
86 OR (last_updated = '1970-01-01 00:00:00'
87 AND ttrss_user_prefs.value != '-1'))";
88 } else {
89 $update_limit_qpart = "AND ((
90 ttrss_feeds.update_interval = 0
91 AND ttrss_user_prefs.value != '-1'
92 AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL CONVERT(ttrss_user_prefs.value, SIGNED INTEGER) MINUTE)
93 ) OR (
94 ttrss_feeds.update_interval > 0
95 AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL ttrss_feeds.update_interval MINUTE)
96 ) OR (ttrss_feeds.last_updated IS NULL
97 AND ttrss_user_prefs.value != '-1')
98 OR (last_updated = '1970-01-01 00:00:00'
99 AND ttrss_user_prefs.value != '-1'))";
100 }
101
102 // Test if feed is currently being updated by another process.
103 if (DB_TYPE == "pgsql") {
104 $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < NOW() - INTERVAL '10 minutes')";
105 } else {
106 $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < DATE_SUB(NOW(), INTERVAL 10 MINUTE))";
107 }
108
109 $query_limit = $limit ? sprintf("LIMIT %d", $limit) : "";
110
111 // Update the least recently updated feeds first
112 $query_order = "ORDER BY last_updated";
113 if (DB_TYPE == "pgsql") $query_order .= " NULLS FIRST";
114
115 $query = "SELECT DISTINCT ttrss_feeds.feed_url, ttrss_feeds.last_updated
116 FROM
117 ttrss_feeds, ttrss_users, ttrss_user_prefs
118 WHERE
119 ttrss_feeds.owner_uid = ttrss_users.id
120 AND ttrss_user_prefs.profile IS NULL
121 AND ttrss_users.id = ttrss_user_prefs.owner_uid
122 AND ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL'
123 $login_thresh_qpart $update_limit_qpart
124 $updstart_thresh_qpart
125 $query_order $query_limit";
126
127 $result = db_query($query);
128
129 if ($debug) _debug(sprintf("Scheduled %d feeds to update...", db_num_rows($result)));
130
131 $feeds_to_update = array();
132 while ($line = db_fetch_assoc($result)) {
133 array_push($feeds_to_update, $line['feed_url']);
134 }
135
136 // Update last_update_started before actually starting the batch
137 // in order to minimize collision risk for parallel daemon tasks
138 if (count($feeds_to_update) > 0) {
139 $feeds_quoted = array_map(function ($s) { return "'" . db_escape_string($s) . "'"; }, $feeds_to_update);
140
141 db_query(sprintf("UPDATE ttrss_feeds SET last_update_started = NOW()
142 WHERE feed_url IN (%s)", implode(',', $feeds_quoted)));
143 }
144
145 $nf = 0;
146 $bstarted = microtime(true);
147
148 $batch_owners = array();
149
150 foreach ($feeds_to_update as $feed) {
151 if($debug) _debug("Base feed: $feed");
152
153 //update_rss_feed($line["id"], true);
154
155 // since we have the data cached, we can deal with other feeds with the same url
156 $tmp_result = db_query("SELECT DISTINCT ttrss_feeds.id,last_updated,ttrss_feeds.owner_uid
157 FROM ttrss_feeds, ttrss_users, ttrss_user_prefs WHERE
158 ttrss_user_prefs.owner_uid = ttrss_feeds.owner_uid AND
159 ttrss_users.id = ttrss_user_prefs.owner_uid AND
160 ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL' AND
161 ttrss_user_prefs.profile IS NULL AND
162 feed_url = '".db_escape_string($feed)."'
163 $update_limit_qpart
164 $login_thresh_qpart
165 ORDER BY ttrss_feeds.id $query_limit");
166
167 if (db_num_rows($tmp_result) > 0) {
168 while ($tline = db_fetch_assoc($tmp_result)) {
169 if ($debug) _debug(" => " . $tline["last_updated"] . ", " . $tline["id"] . " " . $tline["owner_uid"]);
170
171 if (array_search($tline["owner_uid"], $batch_owners) === FALSE)
172 array_push($batch_owners, $tline["owner_uid"]);
173
174 $fstarted = microtime(true);
175 RSSUtils::update_rss_feed($tline["id"], true, false);
176 _debug_suppress(false);
177
178 _debug(sprintf(" %.4f (sec)", microtime(true) - $fstarted));
179
180 ++$nf;
181 }
182 }
183 }
184
185 if ($nf > 0) {
186 _debug(sprintf("Processed %d feeds in %.4f (sec), %.4f (sec/feed avg)", $nf,
187 microtime(true) - $bstarted, (microtime(true) - $bstarted) / $nf));
188 }
189
190 foreach ($batch_owners as $owner_uid) {
191 _debug("Running housekeeping tasks for user $owner_uid...");
192
193 RSSUtils::housekeeping_user($owner_uid);
194 }
195
196 // Send feed digests by email if needed.
197 Digest::send_headlines_digests($debug);
198
199 return $nf;
200
201 }
202
203 // this is used when subscribing
204 static function set_basic_feed_info($feed) {
205
206 $feed = db_escape_string($feed);
207
208 $result = db_query("SELECT feed_url,auth_pass,auth_login,auth_pass_encrypted
209 FROM ttrss_feeds WHERE id = '$feed'");
210
211 $auth_pass_encrypted = sql_bool_to_bool(db_fetch_result($result,
212 0, "auth_pass_encrypted"));
213
214 $auth_login = db_fetch_result($result, 0, "auth_login");
215 $auth_pass = db_fetch_result($result, 0, "auth_pass");
216
217 if ($auth_pass_encrypted && function_exists("mcrypt_decrypt")) {
218 require_once "crypt.php";
219 $auth_pass = decrypt_string($auth_pass);
220 }
221
222 $fetch_url = db_fetch_result($result, 0, "feed_url");
223
224 $feed_data = fetch_file_contents($fetch_url, false,
225 $auth_login, $auth_pass, false,
226 FEED_FETCH_TIMEOUT,
227 0);
228
229 global $fetch_curl_used;
230
231 if (!$fetch_curl_used) {
232 $tmp = @gzdecode($feed_data);
233
234 if ($tmp) $feed_data = $tmp;
235 }
236
237 $feed_data = trim($feed_data);
238
239 $rss = new FeedParser($feed_data);
240 $rss->init();
241
242 if (!$rss->error()) {
243
244 $result = db_query("SELECT title, site_url FROM ttrss_feeds WHERE id = '$feed'");
245
246 $registered_title = db_fetch_result($result, 0, "title");
247 $orig_site_url = db_fetch_result($result, 0, "site_url");
248
249 $site_url = db_escape_string(mb_substr(rewrite_relative_url($fetch_url, $rss->get_link()), 0, 245));
250 $feed_title = db_escape_string(mb_substr($rss->get_title(), 0, 199));
251
252 if ($feed_title && (!$registered_title || $registered_title == "[Unknown]")) {
253 db_query("UPDATE ttrss_feeds SET
254 title = '$feed_title' WHERE id = '$feed'");
255 }
256
257 if ($site_url && $orig_site_url != $site_url) {
258 db_query("UPDATE ttrss_feeds SET
259 site_url = '$site_url' WHERE id = '$feed'");
260 }
261 }
262 }
263
264 /**
265 * @SuppressWarnings(PHPMD.UnusedFormalParameter)
266 */
267 static function update_rss_feed($feed, $no_cache = false) {
268
269 $debug_enabled = defined('DAEMON_EXTENDED_DEBUG') || $_REQUEST['xdebug'];
270
271 _debug_suppress(!$debug_enabled);
272 _debug("start", $debug_enabled);
273
274 $result = db_query("SELECT title FROM ttrss_feeds
275 WHERE id = '$feed'");
276
277 if (db_num_rows($result) == 0) {
278 _debug("feed $feed NOT FOUND/SKIPPED", $debug_enabled);
279 user_error("Attempt to update unknown/invalid feed $feed", E_USER_WARNING);
280 return false;
281 }
282
283 $title = db_fetch_result($result, 0, "title");
284
285 // feed was batch-subscribed or something, we need to get basic info
286 // this is not optimal currently as it fetches stuff separately TODO: optimize
287 if ($title == "[Unknown]") {
288 _debug("setting basic feed info for $feed...");
289 RSSUtils::set_basic_feed_info($feed);
290 }
291
292 $result = db_query("SELECT id,update_interval,auth_login,
293 feed_url,auth_pass,cache_images,
294 mark_unread_on_update, owner_uid,
295 auth_pass_encrypted, feed_language,
296 last_modified
297 FROM ttrss_feeds WHERE id = '$feed'");
298
299 $owner_uid = db_fetch_result($result, 0, "owner_uid");
300 $mark_unread_on_update = sql_bool_to_bool(db_fetch_result($result,
301 0, "mark_unread_on_update"));
302 $auth_pass_encrypted = sql_bool_to_bool(db_fetch_result($result,
303 0, "auth_pass_encrypted"));
304
305 db_query("UPDATE ttrss_feeds SET last_update_started = NOW()
306 WHERE id = '$feed'");
307
308 $auth_login = db_fetch_result($result, 0, "auth_login");
309 $auth_pass = db_fetch_result($result, 0, "auth_pass");
310
311 if ($auth_pass_encrypted && function_exists("mcrypt_decrypt")) {
312 require_once "crypt.php";
313 $auth_pass = decrypt_string($auth_pass);
314 }
315
316 $stored_last_modified = db_fetch_result($result, 0, "last_modified");
317 $cache_images = sql_bool_to_bool(db_fetch_result($result, 0, "cache_images"));
318 $fetch_url = db_fetch_result($result, 0, "feed_url");
319 $feed_language = db_escape_string(mb_strtolower(db_fetch_result($result, 0, "feed_language")));
320 if (!$feed_language) $feed_language = 'english';
321
322 $feed = db_escape_string($feed);
323
324 $date_feed_processed = date('Y-m-d H:i');
325
326 $cache_filename = CACHE_DIR . "/simplepie/" . sha1($fetch_url) . ".xml";
327
328 $pluginhost = new PluginHost();
329 $pluginhost->set_debug($debug_enabled);
330 $user_plugins = get_pref("_ENABLED_PLUGINS", $owner_uid);
331
332 $pluginhost->load(PLUGINS, PluginHost::KIND_ALL);
333 $pluginhost->load($user_plugins, PluginHost::KIND_USER, $owner_uid);
334 $pluginhost->load_data();
335
336 $rss_hash = false;
337
338 $force_refetch = isset($_REQUEST["force_refetch"]);
339 $feed_data = "";
340
341 foreach ($pluginhost->get_hooks(PluginHost::HOOK_FETCH_FEED) as $plugin) {
342 $feed_data = $plugin->hook_fetch_feed($feed_data, $fetch_url, $owner_uid, $feed, 0, $auth_login, $auth_pass);
343 }
344
345 // try cache
346 if (!$feed_data &&
347 file_exists($cache_filename) &&
348 is_readable($cache_filename) &&
349 !$auth_login && !$auth_pass &&
350 filemtime($cache_filename) > time() - 30) {
351
352 _debug("using local cache [$cache_filename].", $debug_enabled);
353
354 @$feed_data = file_get_contents($cache_filename);
355
356 if ($feed_data) {
357 $rss_hash = sha1($feed_data);
358 }
359
360 } else {
361 _debug("local cache will not be used for this feed", $debug_enabled);
362 }
363
364 global $fetch_last_modified;
365
366 // fetch feed from source
367 if (!$feed_data) {
368 _debug("stored last modified: $stored_last_modified", $debug_enabled);
369 _debug("fetching [$fetch_url]...", $debug_enabled);
370
371 if (ini_get("open_basedir") && function_exists("curl_init")) {
372 _debug("not using CURL due to open_basedir restrictions");
373 }
374
375 /*$feed_data = fetch_file_contents($fetch_url, false,
376 $auth_login, $auth_pass, false,
377 $no_cache ? FEED_FETCH_NO_CACHE_TIMEOUT : FEED_FETCH_TIMEOUT,
378 0);*/
379
380 // TODO: last_modified should be limited, if the feed has not been updated for a while
381 // we probably should force one update without the header
382 // unfortunately last_updated gets bumped on http 304 so that daemon would work properly
383
384 $feed_data = fetch_file_contents([
385 "url" => $fetch_url,
386 "login" => $auth_login,
387 "pass" => $auth_pass,
388 "timeout" => $no_cache ? FEED_FETCH_NO_CACHE_TIMEOUT : FEED_FETCH_TIMEOUT,
389 "last_modified" => $force_refetch ? "" : $stored_last_modified
390 ]);
391
392 global $fetch_curl_used;
393
394 if (!$fetch_curl_used) {
395 $tmp = @gzdecode($feed_data);
396
397 if ($tmp) $feed_data = $tmp;
398 }
399
400 $feed_data = trim($feed_data);
401
402 _debug("fetch done.", $debug_enabled);
403 _debug("source last modified: " . $fetch_last_modified);
404
405 if ($feed_data && $fetch_last_modified != $stored_last_modified) {
406 $last_modified_escaped = db_escape_string(substr($fetch_last_modified, 0, 245));
407
408 db_query("UPDATE ttrss_feeds SET last_modified = '$last_modified_escaped' WHERE id = '$feed'");
409
410 }
411
412 // cache vanilla feed data for re-use
413 if ($feed_data && !$auth_pass && !$auth_login && is_writable(CACHE_DIR . "/simplepie")) {
414 $new_rss_hash = sha1($feed_data);
415
416 if ($new_rss_hash != $rss_hash) {
417 _debug("saving $cache_filename", $debug_enabled);
418 @file_put_contents($cache_filename, $feed_data);
419 }
420 }
421 }
422
423 if (!$feed_data) {
424 global $fetch_last_error;
425 global $fetch_last_error_code;
426
427 _debug("unable to fetch: $fetch_last_error [$fetch_last_error_code]", $debug_enabled);
428
429 $error_escaped = '';
430
431 // If-Modified-Since
432 if ($fetch_last_error_code != 304) {
433 $error_escaped = db_escape_string($fetch_last_error);
434 } else {
435 _debug("source claims data not modified, nothing to do.", $debug_enabled);
436 }
437
438 db_query(
439 "UPDATE ttrss_feeds SET last_error = '$error_escaped',
440 last_updated = NOW() WHERE id = '$feed'");
441
442 return;
443 }
444
445 foreach ($pluginhost->get_hooks(PluginHost::HOOK_FEED_FETCHED) as $plugin) {
446 $feed_data = $plugin->hook_feed_fetched($feed_data, $fetch_url, $owner_uid, $feed);
447 }
448
449 $rss = new FeedParser($feed_data);
450 $rss->init();
451
452 $feed = db_escape_string($feed);
453
454 if (!$rss->error()) {
455
456 // We use local pluginhost here because we need to load different per-user feed plugins
457 $pluginhost->run_hooks(PluginHost::HOOK_FEED_PARSED, "hook_feed_parsed", $rss);
458
459 _debug("language: $feed_language", $debug_enabled);
460 _debug("processing feed data...", $debug_enabled);
461
462 // db_query("BEGIN");
463
464 if (DB_TYPE == "pgsql") {
465 $favicon_interval_qpart = "favicon_last_checked < NOW() - INTERVAL '12 hour'";
466 } else {
467 $favicon_interval_qpart = "favicon_last_checked < DATE_SUB(NOW(), INTERVAL 12 HOUR)";
468 }
469
470 $result = db_query("SELECT owner_uid,favicon_avg_color,
471 (favicon_last_checked IS NULL OR $favicon_interval_qpart) AS
472 favicon_needs_check
473 FROM ttrss_feeds WHERE id = '$feed'");
474
475 $favicon_needs_check = sql_bool_to_bool(db_fetch_result($result, 0,
476 "favicon_needs_check"));
477 $favicon_avg_color = db_fetch_result($result, 0, "favicon_avg_color");
478
479 $owner_uid = db_fetch_result($result, 0, "owner_uid");
480
481 $site_url = db_escape_string(mb_substr(rewrite_relative_url($fetch_url, $rss->get_link()), 0, 245));
482
483 _debug("site_url: $site_url", $debug_enabled);
484 _debug("feed_title: " . $rss->get_title(), $debug_enabled);
485
486 if ($favicon_needs_check || $force_refetch) {
487
488 /* terrible hack: if we crash on floicon shit here, we won't check
489 * the icon avgcolor again (unless the icon got updated) */
490
491 $favicon_file = ICONS_DIR . "/$feed.ico";
492 $favicon_modified = @filemtime($favicon_file);
493
494 _debug("checking favicon...", $debug_enabled);
495
496 RSSUtils::check_feed_favicon($site_url, $feed);
497 $favicon_modified_new = @filemtime($favicon_file);
498
499 if ($favicon_modified_new > $favicon_modified)
500 $favicon_avg_color = '';
501
502 if (file_exists($favicon_file) && function_exists("imagecreatefromstring") && $favicon_avg_color == '') {
503 require_once "colors.php";
504
505 db_query("UPDATE ttrss_feeds SET favicon_avg_color = 'fail' WHERE
506 id = '$feed'");
507
508 $favicon_color = db_escape_string(
509 calculate_avg_color($favicon_file));
510
511 $favicon_colorstring = ",favicon_avg_color = '".$favicon_color."'";
512 } else if ($favicon_avg_color == 'fail') {
513 _debug("floicon failed on this file, not trying to recalculate avg color", $debug_enabled);
514 }
515
516 db_query("UPDATE ttrss_feeds SET favicon_last_checked = NOW()
517 $favicon_colorstring
518 WHERE id = '$feed'");
519 }
520
521 _debug("loading filters & labels...", $debug_enabled);
522
523 $filters = load_filters($feed, $owner_uid);
524
525 if ($debug_enabled) {
526 print_r($filters);
527 }
528
529 _debug("" . count($filters) . " filters loaded.", $debug_enabled);
530
531 $items = $rss->get_items();
532
533 if (!is_array($items)) {
534 _debug("no articles found.", $debug_enabled);
535
536 db_query("UPDATE ttrss_feeds
537 SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
538
539 return; // no articles
540 }
541
542 _debug("processing articles...", $debug_enabled);
543
544 $tstart = time();
545
546 foreach ($items as $item) {
547 if ($_REQUEST['xdebug'] == 3) {
548 print_r($item);
549 }
550
551 if (ini_get("max_execution_time") > 0 && time() - $tstart >= ini_get("max_execution_time") * 0.7) {
552 _debug("looks like there's too many articles to process at once, breaking out", $debug_enabled);
553 break;
554 }
555
556 $entry_guid = $item->get_id();
557 if (!$entry_guid) $entry_guid = $item->get_link();
558 if (!$entry_guid) $entry_guid = RSSUtils::make_guid_from_title($item->get_title());
559 if (!$entry_guid) continue;
560
561 $entry_guid = "$owner_uid,$entry_guid";
562
563 $entry_guid_hashed = db_escape_string('SHA1:' . sha1($entry_guid));
564
565 _debug("guid $entry_guid / $entry_guid_hashed", $debug_enabled);
566
567 $entry_timestamp = "";
568
569 $entry_timestamp = $item->get_date();
570
571 _debug("orig date: " . $item->get_date(), $debug_enabled);
572
573 if ($entry_timestamp == -1 || !$entry_timestamp || $entry_timestamp > time()) {
574 $entry_timestamp = time();
575 }
576
577 $entry_timestamp_fmt = strftime("%Y/%m/%d %H:%M:%S", $entry_timestamp);
578
579 _debug("date $entry_timestamp [$entry_timestamp_fmt]", $debug_enabled);
580
581 // $entry_title = html_entity_decode($item->get_title(), ENT_COMPAT, 'UTF-8');
582 // $entry_title = decode_numeric_entities($entry_title);
583 $entry_title = $item->get_title();
584
585 $entry_link = rewrite_relative_url($site_url, $item->get_link());
586
587 _debug("title $entry_title", $debug_enabled);
588 _debug("link $entry_link", $debug_enabled);
589
590 if (!$entry_title) $entry_title = date("Y-m-d H:i:s", $entry_timestamp);;
591
592 $entry_content = $item->get_content();
593 if (!$entry_content) $entry_content = $item->get_description();
594
595 if ($_REQUEST["xdebug"] == 2) {
596 print "content: ";
597 print htmlspecialchars($entry_content);
598 print "\n";
599 }
600
601 $entry_comments = db_escape_string(mb_substr($item->get_comments_url(), 0, 245));
602 $num_comments = (int) $item->get_comments_count();
603
604 $entry_author = $item->get_author(); // escaped later
605 $entry_guid = db_escape_string(mb_substr($entry_guid, 0, 245));
606
607 _debug("author $entry_author", $debug_enabled);
608 _debug("num_comments: $num_comments", $debug_enabled);
609 _debug("looking for tags...", $debug_enabled);
610
611 // parse <category> entries into tags
612
613 $additional_tags = array();
614
615 $additional_tags_src = $item->get_categories();
616
617 if (is_array($additional_tags_src)) {
618 foreach ($additional_tags_src as $tobj) {
619 array_push($additional_tags, $tobj);
620 }
621 }
622
623 $entry_tags = array_unique($additional_tags);
624
625 for ($i = 0; $i < count($entry_tags); $i++)
626 $entry_tags[$i] = mb_strtolower($entry_tags[$i], 'utf-8');
627
628 _debug("tags found: " . join(",", $entry_tags), $debug_enabled);
629
630 _debug("done collecting data.", $debug_enabled);
631
632 $result = db_query("SELECT id, content_hash, lang FROM ttrss_entries
633 WHERE guid = '".db_escape_string($entry_guid)."' OR guid = '$entry_guid_hashed'");
634
635 if (db_num_rows($result) != 0) {
636 $base_entry_id = db_fetch_result($result, 0, "id");
637 $entry_stored_hash = db_fetch_result($result, 0, "content_hash");
638 $article_labels = Article::get_article_labels($base_entry_id, $owner_uid);
639 $entry_language = db_fetch_result($result, 0, "lang");
640
641 $existing_tags = Article::get_article_tags($base_entry_id, $owner_uid);
642 $entry_tags = array_unique(array_merge($entry_tags, $existing_tags));
643
644 } else {
645 $base_entry_id = false;
646 $entry_stored_hash = "";
647 $article_labels = array();
648 $entry_language = "";
649 }
650
651 $article = array("owner_uid" => $owner_uid, // read only
652 "guid" => $entry_guid, // read only
653 "guid_hashed" => $entry_guid_hashed, // read only
654 "title" => $entry_title,
655 "content" => $entry_content,
656 "link" => $entry_link,
657 "labels" => $article_labels, // current limitation: can add labels to article, can't remove them
658 "tags" => $entry_tags,
659 "author" => $entry_author,
660 "force_catchup" => false, // ugly hack for the time being
661 "score_modifier" => 0, // no previous value, plugin should recalculate score modifier based on content if needed
662 "language" => $entry_language,
663 "num_comments" => $num_comments, // read only
664 "feed" => array("id" => $feed,
665 "fetch_url" => $fetch_url,
666 "site_url" => $site_url,
667 "cache_images" => $cache_images)
668 );
669
670 $entry_plugin_data = "";
671 $entry_current_hash = RSSUtils::calculate_article_hash($article, $pluginhost);
672
673 _debug("article hash: $entry_current_hash [stored=$entry_stored_hash]", $debug_enabled);
674
675 if ($entry_current_hash == $entry_stored_hash && !isset($_REQUEST["force_rehash"])) {
676 _debug("stored article seems up to date [IID: $base_entry_id], updating timestamp only", $debug_enabled);
677
678 // we keep encountering the entry in feeds, so we need to
679 // update date_updated column so that we don't get horrible
680 // dupes when the entry gets purged and reinserted again e.g.
681 // in the case of SLOW SLOW OMG SLOW updating feeds
682
683 $base_entry_id = db_fetch_result($result, 0, "id");
684
685 db_query("UPDATE ttrss_entries SET date_updated = NOW()
686 WHERE id = '$base_entry_id'");
687
688 continue;
689 }
690
691 _debug("hash differs, applying plugin filters:", $debug_enabled);
692
693 foreach ($pluginhost->get_hooks(PluginHost::HOOK_ARTICLE_FILTER) as $plugin) {
694 _debug("... " . get_class($plugin), $debug_enabled);
695
696 $start = microtime(true);
697 $article = $plugin->hook_article_filter($article);
698
699 _debug("=== " . sprintf("%.4f (sec)", microtime(true) - $start), $debug_enabled);
700
701 $entry_plugin_data .= mb_strtolower(get_class($plugin)) . ",";
702 }
703
704 if ($_REQUEST["xdebug"] == 2) {
705 print "processed content: ";
706 print htmlspecialchars($article["content"]);
707 print "\n";
708 }
709
710 $entry_plugin_data = db_escape_string($entry_plugin_data);
711
712 _debug("plugin data: $entry_plugin_data", $debug_enabled);
713
714 // Workaround: 4-byte unicode requires utf8mb4 in MySQL. See https://tt-rss.org/forum/viewtopic.php?f=1&t=3377&p=20077#p20077
715 if (DB_TYPE == "mysql") {
716 foreach ($article as $k => $v) {
717
718 // i guess we'll have to take the risk of 4byte unicode labels & tags here
719 if (is_string($article[$k])) {
720 $article[$k] = preg_replace('/[\x{10000}-\x{10FFFF}]/u', "\xEF\xBF\xBD", $v);
721 }
722 }
723 }
724
725 /* Collect article tags here so we could filter by them: */
726
727 $matched_rules = array();
728
729 $article_filters = RSSUtils::get_article_filters($filters, $article["title"],
730 $article["content"], $article["link"], $article["author"],
731 $article["tags"], $matched_rules);
732
733 if ($debug_enabled) {
734 _debug("matched filter rules: ", $debug_enabled);
735
736 if (count($matched_rules) != 0) {
737 print_r($matched_rules);
738 }
739
740 _debug("filter actions: ", $debug_enabled);
741
742 if (count($article_filters) != 0) {
743 print_r($article_filters);
744 }
745 }
746
747 $plugin_filter_names = RSSUtils::find_article_filters($article_filters, "plugin");
748 $plugin_filter_actions = $pluginhost->get_filter_actions();
749
750 if (count($plugin_filter_names) > 0) {
751 _debug("applying plugin filter actions...", $debug_enabled);
752
753 foreach ($plugin_filter_names as $pfn) {
754 list($pfclass,$pfaction) = explode(":", $pfn["param"]);
755
756 if (isset($plugin_filter_actions[$pfclass])) {
757 $plugin = $pluginhost->get_plugin($pfclass);
758
759 _debug("... $pfclass: $pfaction", $debug_enabled);
760
761 if ($plugin) {
762 $start = microtime(true);
763 $article = $plugin->hook_article_filter_action($article, $pfaction);
764
765 _debug("=== " . sprintf("%.4f (sec)", microtime(true) - $start), $debug_enabled);
766 } else {
767 _debug("??? $pfclass: plugin object not found.");
768 }
769 } else {
770 _debug("??? $pfclass: filter plugin not registered.");
771 }
772 }
773 }
774
775 $entry_tags = $article["tags"];
776 $entry_guid = db_escape_string($entry_guid);
777 $entry_title = db_escape_string($article["title"]);
778 $entry_author = db_escape_string(mb_substr($article["author"], 0, 245));
779 $entry_link = db_escape_string($article["link"]);
780 $entry_content = $article["content"]; // escaped below
781 $entry_force_catchup = $article["force_catchup"];
782 $article_labels = $article["labels"];
783 $entry_score_modifier = (int) $article["score_modifier"];
784 $entry_language = db_escape_string($article["language"]);
785
786 if ($debug_enabled) {
787 _debug("article labels:", $debug_enabled);
788
789 if (count($article_labels) != 0) {
790 print_r($article_labels);
791 }
792 }
793
794 _debug("force catchup: $entry_force_catchup");
795
796 if ($cache_images && is_writable(CACHE_DIR . '/images'))
797 RSSUtils::cache_media($entry_content, $site_url, $debug_enabled);
798
799 $entry_content = db_escape_string($entry_content, false);
800
801 //db_query("BEGIN");
802
803 $result = db_query("SELECT id FROM ttrss_entries
804 WHERE (guid = '$entry_guid' OR guid = '$entry_guid_hashed')");
805
806 if (db_num_rows($result) == 0) {
807
808 _debug("base guid [$entry_guid or $entry_guid_hashed] not found, creating...", $debug_enabled);
809
810 // base post entry does not exist, create it
811
812 db_query(
813 "INSERT INTO ttrss_entries
814 (title,
815 guid,
816 link,
817 updated,
818 content,
819 content_hash,
820 no_orig_date,
821 date_updated,
822 date_entered,
823 comments,
824 num_comments,
825 plugin_data,
826 lang,
827 author)
828 VALUES
829 ('$entry_title',
830 '$entry_guid_hashed',
831 '$entry_link',
832 '$entry_timestamp_fmt',
833 '$entry_content',
834 '$entry_current_hash',
835 false,
836 NOW(),
837 '$date_feed_processed',
838 '$entry_comments',
839 '$num_comments',
840 '$entry_plugin_data',
841 '$entry_language',
842 '$entry_author')");
843
844 }
845
846 // now it should exist, if not - bad luck then
847
848 $result = db_query("SELECT id FROM ttrss_entries
849 WHERE guid = '$entry_guid' OR guid = '$entry_guid_hashed'");
850
851 $entry_ref_id = 0;
852 $entry_int_id = 0;
853
854 if (db_num_rows($result) == 1) {
855
856 _debug("base guid found, checking for user record", $debug_enabled);
857
858 $ref_id = db_fetch_result($result, 0, "id");
859 $entry_ref_id = $ref_id;
860
861 /* $stored_guid = db_fetch_result($result, 0, "guid");
862 if ($stored_guid != $entry_guid_hashed) {
863 if ($debug_enabled) _debug("upgrading compat guid to hashed one", $debug_enabled);
864
865 db_query("UPDATE ttrss_entries SET guid = '$entry_guid_hashed' WHERE
866 id = '$ref_id'");
867 } */
868
869 if (RSSUtils::find_article_filter($article_filters, "filter")) {
870 //db_query("COMMIT"); // close transaction in progress
871 continue;
872 }
873
874 $score = RSSUtils::calculate_article_score($article_filters) + $entry_score_modifier;
875
876 _debug("initial score: $score [including plugin modifier: $entry_score_modifier]", $debug_enabled);
877
878 // check for user post link to main table
879
880 $query = "SELECT ref_id, int_id FROM ttrss_user_entries WHERE
881 ref_id = '$ref_id' AND owner_uid = '$owner_uid'";
882
883 // if ($_REQUEST["xdebug"]) print "$query\n";
884
885 $result = db_query($query);
886
887 // okay it doesn't exist - create user entry
888 if (db_num_rows($result) == 0) {
889
890 _debug("user record not found, creating...", $debug_enabled);
891
892 if ($score >= -500 && !RSSUtils::find_article_filter($article_filters, 'catchup') && !$entry_force_catchup) {
893 $unread = 'true';
894 $last_read_qpart = 'NULL';
895 } else {
896 $unread = 'false';
897 $last_read_qpart = 'NOW()';
898 }
899
900 if (RSSUtils::find_article_filter($article_filters, 'mark') || $score > 1000) {
901 $marked = 'true';
902 } else {
903 $marked = 'false';
904 }
905
906 if (RSSUtils::find_article_filter($article_filters, 'publish')) {
907 $published = 'true';
908 } else {
909 $published = 'false';
910 }
911
912 $last_marked = ($marked == 'true') ? 'NOW()' : 'NULL';
913 $last_published = ($published == 'true') ? 'NOW()' : 'NULL';
914
915 $result = db_query(
916 "INSERT INTO ttrss_user_entries
917 (ref_id, owner_uid, feed_id, unread, last_read, marked,
918 published, score, tag_cache, label_cache, uuid,
919 last_marked, last_published)
920 VALUES ('$ref_id', '$owner_uid', '$feed', $unread,
921 $last_read_qpart, $marked, $published, '$score', '', '',
922 '', $last_marked, $last_published)");
923
924 $result = db_query(
925 "SELECT int_id FROM ttrss_user_entries WHERE
926 ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND
927 feed_id = '$feed' LIMIT 1");
928
929 if (db_num_rows($result) == 1) {
930 $entry_int_id = db_fetch_result($result, 0, "int_id");
931 }
932 } else {
933 _debug("user record FOUND", $debug_enabled);
934
935 $entry_ref_id = db_fetch_result($result, 0, "ref_id");
936 $entry_int_id = db_fetch_result($result, 0, "int_id");
937 }
938
939 _debug("RID: $entry_ref_id, IID: $entry_int_id", $debug_enabled);
940
941 if (DB_TYPE == "pgsql") {
942 $tsvector_combined = db_escape_string(mb_substr($entry_title . ' ' . strip_tags(str_replace('<', ' <', $entry_content)),
943 0, 1000000));
944
945 $tsvector_qpart = "tsvector_combined = to_tsvector('$feed_language', '$tsvector_combined'),";
946
947 } else {
948 $tsvector_qpart = "";
949 }
950
951 db_query("UPDATE ttrss_entries
952 SET title = '$entry_title',
953 content = '$entry_content',
954 content_hash = '$entry_current_hash',
955 updated = '$entry_timestamp_fmt',
956 $tsvector_qpart
957 num_comments = '$num_comments',
958 plugin_data = '$entry_plugin_data',
959 author = '$entry_author',
960 lang = '$entry_language'
961 WHERE id = '$ref_id'");
962
963 // update aux data
964 db_query("UPDATE ttrss_user_entries
965 SET score = '$score' WHERE ref_id = '$ref_id'");
966
967 if ($mark_unread_on_update) {
968 _debug("article updated, marking unread as requested.", $debug_enabled);
969
970 db_query("UPDATE ttrss_user_entries
971 SET last_read = null, unread = true WHERE ref_id = '$ref_id'");
972 }
973 }
974
975 //db_query("COMMIT");
976
977 _debug("assigning labels [other]...", $debug_enabled);
978
979 foreach ($article_labels as $label) {
980 Labels::add_article($entry_ref_id, $label[1], $owner_uid);
981 }
982
983 _debug("assigning labels [filters]...", $debug_enabled);
984
985 RSSUtils::assign_article_to_label_filters($entry_ref_id, $article_filters,
986 $owner_uid, $article_labels);
987
988 _debug("looking for enclosures...", $debug_enabled);
989
990 // enclosures
991
992 $enclosures = array();
993
994 $encs = $item->get_enclosures();
995
996 if (is_array($encs)) {
997 foreach ($encs as $e) {
998 $e_item = array(
999 rewrite_relative_url($site_url, $e->link),
1000 $e->type, $e->length, $e->title, $e->width, $e->height);
1001 array_push($enclosures, $e_item);
1002 }
1003 }
1004
1005 if ($cache_images && is_writable(CACHE_DIR . '/images'))
1006 RSSUtils::cache_enclosures($enclosures, $site_url, $debug_enabled);
1007
1008 if ($debug_enabled) {
1009 _debug("article enclosures:", $debug_enabled);
1010 print_r($enclosures);
1011 }
1012
1013 //db_query("BEGIN");
1014
1015 // debugging
1016 // db_query("DELETE FROM ttrss_enclosures WHERE post_id = '$entry_ref_id'");
1017
1018 foreach ($enclosures as $enc) {
1019 $enc_url = db_escape_string($enc[0]);
1020 $enc_type = db_escape_string($enc[1]);
1021 $enc_dur = db_escape_string($enc[2]);
1022 $enc_title = db_escape_string($enc[3]);
1023 $enc_width = intval($enc[4]);
1024 $enc_height = intval($enc[5]);
1025
1026 $result = db_query("SELECT id FROM ttrss_enclosures
1027 WHERE content_url = '$enc_url' AND post_id = '$entry_ref_id'");
1028
1029 if (db_num_rows($result) == 0) {
1030 db_query("INSERT INTO ttrss_enclosures
1031 (content_url, content_type, title, duration, post_id, width, height) VALUES
1032 ('$enc_url', '$enc_type', '$enc_title', '$enc_dur', '$entry_ref_id', $enc_width, $enc_height)");
1033 }
1034 }
1035
1036 //db_query("COMMIT");
1037
1038 // check for manual tags (we have to do it here since they're loaded from filters)
1039
1040 foreach ($article_filters as $f) {
1041 if ($f["type"] == "tag") {
1042
1043 $manual_tags = trim_array(explode(",", $f["param"]));
1044
1045 foreach ($manual_tags as $tag) {
1046 if (tag_is_valid($tag)) {
1047 array_push($entry_tags, $tag);
1048 }
1049 }
1050 }
1051 }
1052
1053 // Skip boring tags
1054
1055 $boring_tags = trim_array(explode(",", mb_strtolower(get_pref(
1056 'BLACKLISTED_TAGS', $owner_uid, ''), 'utf-8')));
1057
1058 $filtered_tags = array();
1059 $tags_to_cache = array();
1060
1061 if ($entry_tags && is_array($entry_tags)) {
1062 foreach ($entry_tags as $tag) {
1063 if (array_search($tag, $boring_tags) === false) {
1064 array_push($filtered_tags, $tag);
1065 }
1066 }
1067 }
1068
1069 $filtered_tags = array_unique($filtered_tags);
1070
1071 if ($debug_enabled) {
1072 _debug("filtered article tags:", $debug_enabled);
1073 print_r($filtered_tags);
1074 }
1075
1076 // Save article tags in the database
1077
1078 if (count($filtered_tags) > 0) {
1079
1080 //db_query("BEGIN");
1081
1082 foreach ($filtered_tags as $tag) {
1083
1084 $tag = sanitize_tag($tag);
1085 $tag = db_escape_string($tag);
1086
1087 if (!tag_is_valid($tag)) continue;
1088
1089 $result = db_query("SELECT id FROM ttrss_tags
1090 WHERE tag_name = '$tag' AND post_int_id = '$entry_int_id' AND
1091 owner_uid = '$owner_uid' LIMIT 1");
1092
1093 if ($result && db_num_rows($result) == 0) {
1094
1095 db_query("INSERT INTO ttrss_tags
1096 (owner_uid,tag_name,post_int_id)
1097 VALUES ('$owner_uid','$tag', '$entry_int_id')");
1098 }
1099
1100 array_push($tags_to_cache, $tag);
1101 }
1102
1103 /* update the cache */
1104
1105 $tags_to_cache = array_unique($tags_to_cache);
1106
1107 $tags_str = db_escape_string(join(",", $tags_to_cache));
1108
1109 db_query("UPDATE ttrss_user_entries
1110 SET tag_cache = '$tags_str' WHERE ref_id = '$entry_ref_id'
1111 AND owner_uid = $owner_uid");
1112
1113 //db_query("COMMIT");
1114 }
1115
1116 _debug("article processed", $debug_enabled);
1117 }
1118
1119 _debug("purging feed...", $debug_enabled);
1120
1121 purge_feed($feed, 0, $debug_enabled);
1122
1123 db_query("UPDATE ttrss_feeds
1124 SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
1125
1126 // db_query("COMMIT");
1127
1128 } else {
1129
1130 $error_msg = db_escape_string(mb_substr($rss->error(), 0, 245));
1131
1132 _debug("fetch error: $error_msg", $debug_enabled);
1133
1134 if (count($rss->errors()) > 1) {
1135 foreach ($rss->errors() as $error) {
1136 _debug("+ $error");
1137 }
1138 }
1139
1140 db_query(
1141 "UPDATE ttrss_feeds SET last_error = '$error_msg',
1142 last_updated = NOW() WHERE id = '$feed'");
1143
1144 unset($rss);
1145 return;
1146 }
1147
1148 _debug("done", $debug_enabled);
1149
1150 return true;
1151 }
1152
1153 static function cache_enclosures($enclosures, $site_url, $debug) {
1154 foreach ($enclosures as $enc) {
1155
1156 if (preg_match("/(image|audio|video)/", $enc[1])) {
1157
1158 $src = rewrite_relative_url($site_url, $enc[0]);
1159
1160 $local_filename = CACHE_DIR . "/images/" . sha1($src);
1161
1162 if ($debug) _debug("cache_enclosures: downloading: $src to $local_filename");
1163
1164 if (!file_exists($local_filename)) {
1165 $file_content = fetch_file_contents($src);
1166
1167 if ($file_content && strlen($file_content) > MIN_CACHE_FILE_SIZE) {
1168 file_put_contents($local_filename, $file_content);
1169 }
1170 } else {
1171 touch($local_filename);
1172 }
1173 }
1174 }
1175 }
1176
1177 static function cache_media($html, $site_url, $debug) {
1178 libxml_use_internal_errors(true);
1179
1180 $charset_hack = '<head>
1181 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
1182 </head>';
1183
1184 $doc = new DOMDocument();
1185 $doc->loadHTML($charset_hack . $html);
1186 $xpath = new DOMXPath($doc);
1187
1188 $entries = $xpath->query('(//img[@src])|(//video/source[@src])|(//audio/source[@src])');
1189
1190 foreach ($entries as $entry) {
1191 if ($entry->hasAttribute('src') && strpos($entry->getAttribute('src'), "data:") !== 0) {
1192 $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
1193
1194 $local_filename = CACHE_DIR . "/images/" . sha1($src);
1195
1196 if ($debug) _debug("cache_media: downloading: $src to $local_filename");
1197
1198 if (!file_exists($local_filename)) {
1199 $file_content = fetch_file_contents($src);
1200
1201 if ($file_content && strlen($file_content) > MIN_CACHE_FILE_SIZE) {
1202 file_put_contents($local_filename, $file_content);
1203 }
1204 } else {
1205 touch($local_filename);
1206 }
1207 }
1208 }
1209 }
1210
1211 static function expire_error_log($debug) {
1212 if ($debug) _debug("Removing old error log entries...");
1213
1214 if (DB_TYPE == "pgsql") {
1215 db_query("DELETE FROM ttrss_error_log
1216 WHERE created_at < NOW() - INTERVAL '7 days'");
1217 } else {
1218 db_query("DELETE FROM ttrss_error_log
1219 WHERE created_at < DATE_SUB(NOW(), INTERVAL 7 DAY)");
1220 }
1221
1222 }
1223
1224 static function expire_lock_files($debug) {
1225 //if ($debug) _debug("Removing old lock files...");
1226
1227 $num_deleted = 0;
1228
1229 if (is_writable(LOCK_DIRECTORY)) {
1230 $files = glob(LOCK_DIRECTORY . "/*.lock");
1231
1232 if ($files) {
1233 foreach ($files as $file) {
1234 if (!file_is_locked(basename($file)) && time() - filemtime($file) > 86400*2) {
1235 unlink($file);
1236 ++$num_deleted;
1237 }
1238 }
1239 }
1240 }
1241
1242 if ($debug) _debug("Removed $num_deleted old lock files.");
1243 }
1244
1245 static function expire_cached_files($debug) {
1246 foreach (array("simplepie", "images", "export", "upload") as $dir) {
1247 $cache_dir = CACHE_DIR . "/$dir";
1248
1249 // if ($debug) _debug("Expiring $cache_dir");
1250
1251 $num_deleted = 0;
1252
1253 if (is_writable($cache_dir)) {
1254 $files = glob("$cache_dir/*");
1255
1256 if ($files) {
1257 foreach ($files as $file) {
1258 if (time() - filemtime($file) > 86400*CACHE_MAX_DAYS) {
1259 unlink($file);
1260
1261 ++$num_deleted;
1262 }
1263 }
1264 }
1265 }
1266
1267 if ($debug) _debug("$cache_dir: removed $num_deleted files.");
1268 }
1269 }
1270
1271 /**
1272 * Source: http://www.php.net/manual/en/function.parse-url.php#104527
1273 * Returns the url query as associative array
1274 *
1275 * @param string query
1276 * @return array params
1277 */
1278 static function convertUrlQuery($query) {
1279 $queryParts = explode('&', $query);
1280
1281 $params = array();
1282
1283 foreach ($queryParts as $param) {
1284 $item = explode('=', $param);
1285 $params[$item[0]] = $item[1];
1286 }
1287
1288 return $params;
1289 }
1290
1291 static function get_article_filters($filters, $title, $content, $link, $author, $tags, &$matched_rules = false) {
1292 $matches = array();
1293
1294 foreach ($filters as $filter) {
1295 $match_any_rule = $filter["match_any_rule"];
1296 $inverse = $filter["inverse"];
1297 $filter_match = false;
1298
1299 foreach ($filter["rules"] as $rule) {
1300 $match = false;
1301 $reg_exp = str_replace('/', '\/', $rule["reg_exp"]);
1302 $rule_inverse = $rule["inverse"];
1303
1304 if (!$reg_exp)
1305 continue;
1306
1307 switch ($rule["type"]) {
1308 case "title":
1309 $match = @preg_match("/$reg_exp/iu", $title);
1310 break;
1311 case "content":
1312 // we don't need to deal with multiline regexps
1313 $content = preg_replace("/[\r\n\t]/", "", $content);
1314
1315 $match = @preg_match("/$reg_exp/iu", $content);
1316 break;
1317 case "both":
1318 // we don't need to deal with multiline regexps
1319 $content = preg_replace("/[\r\n\t]/", "", $content);
1320
1321 $match = (@preg_match("/$reg_exp/iu", $title) || @preg_match("/$reg_exp/iu", $content));
1322 break;
1323 case "link":
1324 $match = @preg_match("/$reg_exp/iu", $link);
1325 break;
1326 case "author":
1327 $match = @preg_match("/$reg_exp/iu", $author);
1328 break;
1329 case "tag":
1330 foreach ($tags as $tag) {
1331 if (@preg_match("/$reg_exp/iu", $tag)) {
1332 $match = true;
1333 break;
1334 }
1335 }
1336 break;
1337 }
1338
1339 if ($rule_inverse) $match = !$match;
1340
1341 if ($match_any_rule) {
1342 if ($match) {
1343 $filter_match = true;
1344 break;
1345 }
1346 } else {
1347 $filter_match = $match;
1348 if (!$match) {
1349 break;
1350 }
1351 }
1352 }
1353
1354 if ($inverse) $filter_match = !$filter_match;
1355
1356 if ($filter_match) {
1357 if (is_array($matched_rules)) array_push($matched_rules, $rule);
1358
1359 foreach ($filter["actions"] AS $action) {
1360 array_push($matches, $action);
1361
1362 // if Stop action encountered, perform no further processing
1363 if (isset($action["type"]) && $action["type"] == "stop") return $matches;
1364 }
1365 }
1366 }
1367
1368 return $matches;
1369 }
1370
1371 static function find_article_filter($filters, $filter_name) {
1372 foreach ($filters as $f) {
1373 if ($f["type"] == $filter_name) {
1374 return $f;
1375 };
1376 }
1377 return false;
1378 }
1379
1380 static function find_article_filters($filters, $filter_name) {
1381 $results = array();
1382
1383 foreach ($filters as $f) {
1384 if ($f["type"] == $filter_name) {
1385 array_push($results, $f);
1386 };
1387 }
1388 return $results;
1389 }
1390
1391 static function calculate_article_score($filters) {
1392 $score = 0;
1393
1394 foreach ($filters as $f) {
1395 if ($f["type"] == "score") {
1396 $score += $f["param"];
1397 };
1398 }
1399 return $score;
1400 }
1401
1402 static function labels_contains_caption($labels, $caption) {
1403 foreach ($labels as $label) {
1404 if ($label[1] == $caption) {
1405 return true;
1406 }
1407 }
1408
1409 return false;
1410 }
1411
1412 static function assign_article_to_label_filters($id, $filters, $owner_uid, $article_labels) {
1413 foreach ($filters as $f) {
1414 if ($f["type"] == "label") {
1415 if (!RSSUtils::labels_contains_caption($article_labels, $f["param"])) {
1416 Labels::add_article($id, $f["param"], $owner_uid);
1417 }
1418 }
1419 }
1420 }
1421
1422 static function make_guid_from_title($title) {
1423 return preg_replace("/[ \"\',.:;]/", "-",
1424 mb_strtolower(strip_tags($title), 'utf-8'));
1425 }
1426
1427 static function cleanup_counters_cache($debug) {
1428 $result = db_query("DELETE FROM ttrss_counters_cache
1429 WHERE feed_id > 0 AND
1430 (SELECT COUNT(id) FROM ttrss_feeds WHERE
1431 id = feed_id AND
1432 ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid) = 0");
1433 $frows = db_affected_rows($result);
1434
1435 $result = db_query("DELETE FROM ttrss_cat_counters_cache
1436 WHERE feed_id > 0 AND
1437 (SELECT COUNT(id) FROM ttrss_feed_categories WHERE
1438 id = feed_id AND
1439 ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid) = 0");
1440 $crows = db_affected_rows($result);
1441
1442 if ($debug) _debug("Removed $frows (feeds) $crows (cats) orphaned counter cache entries.");
1443 }
1444
1445 static function housekeeping_user($owner_uid) {
1446 $tmph = new PluginHost();
1447
1448 load_user_plugins($owner_uid, $tmph);
1449
1450 $tmph->run_hooks(PluginHost::HOOK_HOUSE_KEEPING, "hook_house_keeping", "");
1451 }
1452
1453 static function housekeeping_common($debug) {
1454 RSSUtils::expire_cached_files($debug);
1455 RSSUtils::expire_lock_files($debug);
1456 RSSUtils::expire_error_log($debug);
1457
1458 $count = RSSUtils::update_feedbrowser_cache();
1459 _debug("Feedbrowser updated, $count feeds processed.");
1460
1461 Article::purge_orphans( true);
1462 RSSUtils::cleanup_counters_cache($debug);
1463
1464 //$rc = cleanup_tags( 14, 50000);
1465 //_debug("Cleaned $rc cached tags.");
1466
1467 PluginHost::getInstance()->run_hooks(PluginHost::HOOK_HOUSE_KEEPING, "hook_house_keeping", "");
1468 }
1469
1470 static function check_feed_favicon($site_url, $feed) {
1471 # print "FAVICON [$site_url]: $favicon_url\n";
1472
1473 $icon_file = ICONS_DIR . "/$feed.ico";
1474
1475 if (!file_exists($icon_file)) {
1476 $favicon_url = get_favicon_url($site_url);
1477
1478 if ($favicon_url) {
1479 // Limiting to "image" type misses those served with text/plain
1480 $contents = fetch_file_contents($favicon_url); // , "image");
1481
1482 if ($contents) {
1483 // Crude image type matching.
1484 // Patterns gleaned from the file(1) source code.
1485 if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
1486 // 0 string \000\000\001\000 MS Windows icon resource
1487 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
1488 }
1489 elseif (preg_match('/^GIF8/', $contents)) {
1490 // 0 string GIF8 GIF image data
1491 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
1492 }
1493 elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
1494 // 0 string \x89PNG\x0d\x0a\x1a\x0a PNG image data
1495 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
1496 }
1497 elseif (preg_match('/^\xff\xd8/', $contents)) {
1498 // 0 beshort 0xffd8 JPEG image data
1499 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
1500 }
1501 else {
1502 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
1503 $contents = "";
1504 }
1505 }
1506
1507 if ($contents) {
1508 $fp = @fopen($icon_file, "w");
1509
1510 if ($fp) {
1511 fwrite($fp, $contents);
1512 fclose($fp);
1513 chmod($icon_file, 0644);
1514 }
1515 }
1516 }
1517 return $icon_file;
1518 }
1519 }
1520
1521
1522
1523 }
web-based news feed (RSS/Atom) reader and aggregator; see https://tt-rss.org/