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unify houskeeping stuff, increase spawn interval
[tt-rss.git] / include / rssfuncs.php
1 <?php
2 define_default('DAEMON_UPDATE_LOGIN_LIMIT', 30);
3 define_default('DAEMON_FEED_LIMIT', 500);
4 define_default('DAEMON_SLEEP_INTERVAL', 120);
5
6 function update_feedbrowser_cache() {
7
8 $result = db_query("SELECT feed_url, site_url, title, COUNT(id) AS subscribers
9 FROM ttrss_feeds WHERE (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
10 WHERE tf.feed_url = ttrss_feeds.feed_url
11 AND (private IS true OR auth_login != '' OR auth_pass != '' OR feed_url LIKE '%:%@%/%'))
12 GROUP BY feed_url, site_url, title ORDER BY subscribers DESC LIMIT 1000");
13
14 db_query("BEGIN");
15
16 db_query("DELETE FROM ttrss_feedbrowser_cache");
17
18 $count = 0;
19
20 while ($line = db_fetch_assoc($result)) {
21 $subscribers = db_escape_string($line["subscribers"]);
22 $feed_url = db_escape_string($line["feed_url"]);
23 $title = db_escape_string($line["title"]);
24 $site_url = db_escape_string($line["site_url"]);
25
26 $tmp_result = db_query("SELECT subscribers FROM
27 ttrss_feedbrowser_cache WHERE feed_url = '$feed_url'");
28
29 if (db_num_rows($tmp_result) == 0) {
30
31 db_query("INSERT INTO ttrss_feedbrowser_cache
32 (feed_url, site_url, title, subscribers) VALUES ('$feed_url',
33 '$site_url', '$title', '$subscribers')");
34
35 ++$count;
36
37 }
38
39 }
40
41 db_query("COMMIT");
42
43 return $count;
44
45 }
46
47
48 /**
49 * Update a feed batch.
50 * Used by daemons to update n feeds by run.
51 * Only update feed needing a update, and not being processed
52 * by another process.
53 *
54 * @param mixed $link Database link
55 * @param integer $limit Maximum number of feeds in update batch. Default to DAEMON_FEED_LIMIT.
56 * @param boolean $from_http Set to true if you call this function from http to disable cli specific code.
57 * @param boolean $debug Set to false to disable debug output. Default to true.
58 * @return void
59 */
60 function update_daemon_common($limit = DAEMON_FEED_LIMIT, $from_http = false, $debug = true) {
61 // Process all other feeds using last_updated and interval parameters
62
63 $schema_version = get_schema_version();
64
65 if ($schema_version != SCHEMA_VERSION) {
66 die("Schema version is wrong, please upgrade the database.\n");
67 }
68
69 define('PREFS_NO_CACHE', true);
70
71 // Test if the user has loggued in recently. If not, it does not update its feeds.
72 if (!SINGLE_USER_MODE && DAEMON_UPDATE_LOGIN_LIMIT > 0) {
73 if (DB_TYPE == "pgsql") {
74 $login_thresh_qpart = "AND ttrss_users.last_login >= NOW() - INTERVAL '".DAEMON_UPDATE_LOGIN_LIMIT." days'";
75 } else {
76 $login_thresh_qpart = "AND ttrss_users.last_login >= DATE_SUB(NOW(), INTERVAL ".DAEMON_UPDATE_LOGIN_LIMIT." DAY)";
77 }
78 } else {
79 $login_thresh_qpart = "";
80 }
81
82 // Test if the feed need a update (update interval exceded).
83 if (DB_TYPE == "pgsql") {
84 $update_limit_qpart = "AND ((
85 ttrss_feeds.update_interval = 0
86 AND ttrss_user_prefs.value != '-1'
87 AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_user_prefs.value || ' minutes') AS INTERVAL)
88 ) OR (
89 ttrss_feeds.update_interval > 0
90 AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_feeds.update_interval || ' minutes') AS INTERVAL)
91 ) OR ttrss_feeds.last_updated IS NULL
92 OR last_updated = '1970-01-01 00:00:00')";
93 } else {
94 $update_limit_qpart = "AND ((
95 ttrss_feeds.update_interval = 0
96 AND ttrss_user_prefs.value != '-1'
97 AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL CONVERT(ttrss_user_prefs.value, SIGNED INTEGER) MINUTE)
98 ) OR (
99 ttrss_feeds.update_interval > 0
100 AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL ttrss_feeds.update_interval MINUTE)
101 ) OR ttrss_feeds.last_updated IS NULL
102 OR last_updated = '1970-01-01 00:00:00')";
103 }
104
105 // Test if feed is currently being updated by another process.
106 if (DB_TYPE == "pgsql") {
107 $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < NOW() - INTERVAL '10 minutes')";
108 } else {
109 $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < DATE_SUB(NOW(), INTERVAL 10 MINUTE))";
110 }
111
112 // Test if there is a limit to number of updated feeds
113 $query_limit = "";
114 if($limit) $query_limit = sprintf("LIMIT %d", $limit);
115
116 $query = "SELECT DISTINCT ttrss_feeds.feed_url, ttrss_feeds.last_updated
117 FROM
118 ttrss_feeds, ttrss_users, ttrss_user_prefs
119 WHERE
120 ttrss_feeds.owner_uid = ttrss_users.id
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 ORDER BY last_updated $query_limit";
126
127 // We search for feed needing update.
128 $result = db_query($query);
129
130 if($debug) _debug(sprintf("Scheduled %d feeds to update...", db_num_rows($result)));
131
132 // Here is a little cache magic in order to minimize risk of double feed updates.
133 $feeds_to_update = array();
134 while ($line = db_fetch_assoc($result)) {
135 array_push($feeds_to_update, db_escape_string($line['feed_url']));
136 }
137
138 // We update the feed last update started date before anything else.
139 // There is no lag due to feed contents downloads
140 // It prevent an other process to update the same feed.
141
142 if(count($feeds_to_update) > 0) {
143 $feeds_quoted = array();
144
145 foreach ($feeds_to_update as $feed) {
146 array_push($feeds_quoted, "'" . db_escape_string($feed) . "'");
147 }
148
149 db_query(sprintf("UPDATE ttrss_feeds SET last_update_started = NOW()
150 WHERE feed_url IN (%s)", implode(',', $feeds_quoted)));
151 }
152
153 $nf = 0;
154
155 // For each feed, we call the feed update function.
156 foreach ($feeds_to_update as $feed) {
157 if($debug) _debug("Base feed: $feed");
158
159 //update_rss_feed($line["id"], true);
160
161 // since we have the data cached, we can deal with other feeds with the same url
162
163 $tmp_result = db_query("SELECT DISTINCT ttrss_feeds.id,last_updated
164 FROM ttrss_feeds, ttrss_users, ttrss_user_prefs WHERE
165 ttrss_user_prefs.owner_uid = ttrss_feeds.owner_uid AND
166 ttrss_users.id = ttrss_user_prefs.owner_uid AND
167 ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL' AND
168 feed_url = '".db_escape_string($feed)."' AND
169 (ttrss_feeds.update_interval > 0 OR
170 ttrss_user_prefs.value != '-1')
171 $login_thresh_qpart
172 ORDER BY ttrss_feeds.id $query_limit");
173
174 if (db_num_rows($tmp_result) > 0) {
175 while ($tline = db_fetch_assoc($tmp_result)) {
176 if($debug) _debug(" => " . $tline["last_updated"] . ", " . $tline["id"]);
177 update_rss_feed($tline["id"], true);
178 ++$nf;
179 }
180 }
181 }
182
183 require_once "digest.php";
184
185 // Send feed digests by email if needed.
186 send_headlines_digests($debug);
187
188 return $nf;
189
190 } // function update_daemon_common
191
192 // ignore_daemon is not used
193 function update_rss_feed($feed, $ignore_daemon = false, $no_cache = false,
194 $override_url = false) {
195
196 require_once "lib/simplepie/simplepie.inc";
197
198 $debug_enabled = defined('DAEMON_EXTENDED_DEBUG') || $_REQUEST['xdebug'];
199
200 _debug("start", $debug_enabled);
201
202 $result = db_query("SELECT id,update_interval,auth_login,
203 feed_url,auth_pass,cache_images,last_updated,
204 mark_unread_on_update, owner_uid,
205 pubsub_state, auth_pass_encrypted
206 FROM ttrss_feeds WHERE id = '$feed'");
207
208 if (db_num_rows($result) == 0) {
209 _debug("feed $feed NOT FOUND/SKIPPED", $debug_enabled);
210 return false;
211 }
212
213 $last_updated = db_fetch_result($result, 0, "last_updated");
214 $owner_uid = db_fetch_result($result, 0, "owner_uid");
215 $mark_unread_on_update = sql_bool_to_bool(db_fetch_result($result,
216 0, "mark_unread_on_update"));
217 $pubsub_state = db_fetch_result($result, 0, "pubsub_state");
218 $auth_pass_encrypted = sql_bool_to_bool(db_fetch_result($result,
219 0, "auth_pass_encrypted"));
220
221 db_query("UPDATE ttrss_feeds SET last_update_started = NOW()
222 WHERE id = '$feed'");
223
224 $auth_login = db_fetch_result($result, 0, "auth_login");
225 $auth_pass = db_fetch_result($result, 0, "auth_pass");
226
227 if ($auth_pass_encrypted) {
228 require_once "crypt.php";
229 $auth_pass = decrypt_string($auth_pass);
230 }
231
232 $cache_images = sql_bool_to_bool(db_fetch_result($result, 0, "cache_images"));
233 $fetch_url = db_fetch_result($result, 0, "feed_url");
234
235 $feed = db_escape_string($feed);
236
237 if ($override_url) $fetch_url = $override_url;
238
239 $date_feed_processed = date('Y-m-d H:i');
240
241 $cache_filename = CACHE_DIR . "/simplepie/" . sha1($fetch_url) . ".feed";
242
243 // Ignore cache if new feed or manual update.
244 $cache_age = ($no_cache || is_null($last_updated) || $last_updated == '1970-01-01 00:00:00') ?
245 30 : get_feed_update_interval($feed) * 60;
246
247 _debug("cache filename: $cache_filename exists: " . file_exists($cache_filename), $debug_enabled);
248 _debug("cache age: $cache_age; no cache: $no_cache", $debug_enabled);
249
250 $cached_feed_data_hash = false;
251
252 $rss = false;
253 $rss_hash = false;
254 $cache_timestamp = file_exists($cache_filename) ? filemtime($cache_filename) : 0;
255 $last_updated_timestamp = strtotime($last_updated);
256
257 $force_refetch = isset($_REQUEST["force_refetch"]);
258
259 if (file_exists($cache_filename) &&
260 is_readable($cache_filename) &&
261 !$auth_login && !$auth_pass &&
262 filemtime($cache_filename) > time() - $cache_age) {
263
264 _debug("using local cache.", $debug_enabled);
265
266 if ($cache_timestamp > $last_updated_timestamp) {
267 @$rss_data = file_get_contents($cache_filename);
268
269 if ($rss_data) {
270 $rss_hash = sha1($rss_data);
271 @$rss = unserialize($rss_data);
272 }
273 } else if (!$force_refetch) {
274 _debug("local cache valid and older than last_updated, nothing to do.", $debug_enabled);
275 return;
276 }
277 } else {
278 _debug("local cache will not be used for this feed", $debug_enabled);
279 $cache_timestamp = 0;
280 }
281
282 if (!$rss) {
283
284 if (!$feed_data) {
285 _debug("fetching [$fetch_url] (ts: $cache_timestamp/$last_updated_timestamp)", $debug_enabled);
286
287 $feed_data = fetch_file_contents($fetch_url, false,
288 $auth_login, $auth_pass, false,
289 $no_cache ? FEED_FETCH_NO_CACHE_TIMEOUT : FEED_FETCH_TIMEOUT,
290 $force_refetch ? 0 : max($last_updated_timestamp, $cache_timestamp));
291
292 global $fetch_curl_used;
293
294 if (!$fetch_curl_used) {
295 $tmp = @gzdecode($feed_data);
296
297 if ($tmp) $feed_data = $tmp;
298 }
299
300 $feed_data = trim($feed_data);
301
302 _debug("fetch done.", $debug_enabled);
303
304 if ($feed_data) {
305 $error = verify_feed_xml($feed_data);
306
307 if ($error) {
308 _debug("error verifying XML, code: " . $error->code, $debug_enabled);
309
310 if ($error->code == 26) {
311 _debug("got error 26, trying to decode entities...", $debug_enabled);
312
313 $feed_data = html_entity_decode($feed_data, ENT_COMPAT, 'UTF-8');
314
315 $error = verify_feed_xml($feed_data);
316
317 if ($error) $feed_data = '';
318 }
319 }
320 }
321 }
322
323 if (!$feed_data) {
324 global $fetch_last_error;
325 global $fetch_last_error_code;
326
327 _debug("unable to fetch: $fetch_last_error [$fetch_last_error_code]", $debug_enabled);
328
329 $error_escaped = '';
330
331 // If-Modified-Since
332 if ($fetch_last_error_code != 304) {
333 $error_escaped = db_escape_string($fetch_last_error);
334 } else {
335 _debug("source claims data not modified, nothing to do.", $debug_enabled);
336 }
337
338 db_query(
339 "UPDATE ttrss_feeds SET last_error = '$error_escaped',
340 last_updated = NOW() WHERE id = '$feed'");
341
342 return;
343 }
344 }
345
346 $pluginhost = new PluginHost();
347 $pluginhost->set_debug($debug_enabled, $debug_enabled);
348 $user_plugins = get_pref("_ENABLED_PLUGINS", $owner_uid);
349
350 $pluginhost->load(PLUGINS, PluginHost::KIND_ALL);
351 $pluginhost->load($user_plugins, PluginHost::KIND_USER, $owner_uid);
352 $pluginhost->load_data();
353
354 foreach ($pluginhost->get_hooks(PluginHost::HOOK_FEED_FETCHED) as $plugin) {
355 $feed_data = $plugin->hook_feed_fetched($feed_data);
356 }
357
358 if (!$rss) {
359 $rss = new SimplePie();
360 $rss->set_sanitize_class("SanitizeDummy");
361 // simplepie ignores the above and creates default sanitizer anyway,
362 // so let's override it...
363 $rss->sanitize = new SanitizeDummy();
364 $rss->set_output_encoding('UTF-8');
365 $rss->set_raw_data($feed_data);
366 $rss->enable_cache(false);
367
368 @$rss->init();
369 }
370
371 // print_r($rss);
372
373 $feed = db_escape_string($feed);
374
375 if (!$rss->error()) {
376
377 // cache data for later
378 if (!$auth_pass && !$auth_login && is_writable(CACHE_DIR . "/simplepie")) {
379 $rss_data = serialize($rss);
380 $new_rss_hash = sha1($rss_data);
381
382 if ($new_rss_hash != $rss_hash) {
383 _debug("saving $cache_filename", $debug_enabled);
384 @file_put_contents($cache_filename, serialize($rss));
385 }
386 }
387
388 // We use local pluginhost here because we need to load different per-user feed plugins
389 $pluginhost->run_hooks(PluginHost::HOOK_FEED_PARSED, "hook_feed_parsed", $rss);
390
391 _debug("processing feed data...", $debug_enabled);
392
393 // db_query("BEGIN");
394
395 if (DB_TYPE == "pgsql") {
396 $favicon_interval_qpart = "favicon_last_checked < NOW() - INTERVAL '12 hour'";
397 } else {
398 $favicon_interval_qpart = "favicon_last_checked < DATE_SUB(NOW(), INTERVAL 12 HOUR)";
399 }
400
401 $result = db_query("SELECT title,site_url,owner_uid,favicon_avg_color,
402 (favicon_last_checked IS NULL OR $favicon_interval_qpart) AS
403 favicon_needs_check
404 FROM ttrss_feeds WHERE id = '$feed'");
405
406 $registered_title = db_fetch_result($result, 0, "title");
407 $orig_site_url = db_fetch_result($result, 0, "site_url");
408 $favicon_needs_check = sql_bool_to_bool(db_fetch_result($result, 0,
409 "favicon_needs_check"));
410 $favicon_avg_color = db_fetch_result($result, 0, "favicon_avg_color");
411
412 $owner_uid = db_fetch_result($result, 0, "owner_uid");
413
414 $site_url = db_escape_string(mb_substr(rewrite_relative_url($fetch_url, $rss->get_link()), 0, 245));
415
416 if ($favicon_needs_check || $force_refetch) {
417
418 /* terrible hack: if we crash on floicon shit here, we won't check
419 * the icon avgcolor again (unless the icon got updated) */
420
421 db_query("UPDATE ttrss_feeds SET favicon_avg_color = 'fail' WHERE
422 id = '$feed'");
423
424 $favicon_file = ICONS_DIR . "/$feed.ico";
425 $favicon_modified = @filemtime($favicon_file);
426
427 _debug("checking favicon...", $debug_enabled);
428
429 check_feed_favicon($site_url, $feed, $link);
430 $favicon_modified_new = @filemtime($favicon_file);
431
432 if ($favicon_modified_new > $favicon_modified)
433 $favicon_avg_color = '';
434
435 if (file_exists($favicon_file) && function_exists("imagecreatefromstring") && $favicon_avg_color == '') {
436 require_once "colors.php";
437
438 $favicon_color = db_escape_string(
439 calculate_avg_color($favicon_file));
440
441 $favicon_colorstring = ",favicon_avg_color = '".$favicon_color."'";
442 } else if ($favicon_avg_color == 'fail') {
443 _debug("floicon failed on this file, not trying to recalculate avg color");
444 }
445
446 db_query("UPDATE ttrss_feeds SET favicon_last_checked = NOW()
447 $favicon_colorstring
448 WHERE id = '$feed'");
449 }
450
451 if (!$registered_title || $registered_title == "[Unknown]") {
452
453 $feed_title = db_escape_string($rss->get_title());
454
455 _debug("registering title: $feed_title", $debug_enabled);
456
457 db_query("UPDATE ttrss_feeds SET
458 title = '$feed_title' WHERE id = '$feed'");
459 }
460
461 if ($site_url && $orig_site_url != $site_url) {
462 db_query("UPDATE ttrss_feeds SET
463 site_url = '$site_url' WHERE id = '$feed'");
464 }
465
466 _debug("loading filters & labels...", $debug_enabled);
467
468 $filters = load_filters($feed, $owner_uid);
469 $labels = get_all_labels($owner_uid);
470
471 _debug("" . count($filters) . " filters loaded.", $debug_enabled);
472
473 $items = $rss->get_items();
474
475 if (!is_array($items)) {
476 _debug("no articles found.", $debug_enabled);
477
478 db_query("UPDATE ttrss_feeds
479 SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
480
481 return; // no articles
482 }
483
484 if ($pubsub_state != 2 && PUBSUBHUBBUB_ENABLED) {
485
486 _debug("checking for PUSH hub...", $debug_enabled);
487
488 $feed_hub_url = false;
489
490 $links = $rss->get_links('hub');
491
492 if ($links && is_array($links)) {
493 foreach ($links as $l) {
494 $feed_hub_url = $l;
495 break;
496 }
497 }
498
499 _debug("feed hub url: $feed_hub_url", $debug_enabled);
500
501 if ($feed_hub_url && function_exists('curl_init') &&
502 !ini_get("open_basedir")) {
503
504 require_once 'lib/pubsubhubbub/subscriber.php';
505
506 $callback_url = get_self_url_prefix() .
507 "/public.php?op=pubsub&id=$feed";
508
509 $s = new Subscriber($feed_hub_url, $callback_url);
510
511 $rc = $s->subscribe($fetch_url);
512
513 _debug("feed hub url found, subscribe request sent.", $debug_enabled);
514
515 db_query("UPDATE ttrss_feeds SET pubsub_state = 1
516 WHERE id = '$feed'");
517 }
518 }
519
520 _debug("processing articles...", $debug_enabled);
521
522 foreach ($items as $item) {
523 if ($_REQUEST['xdebug'] == 3) {
524 print_r($item);
525 }
526
527 $entry_guid = $item->get_id();
528 if (!$entry_guid) $entry_guid = $item->get_link();
529 if (!$entry_guid) $entry_guid = make_guid_from_title($item->get_title());
530
531 if (!$entry_guid) continue;
532
533 $entry_guid = "$owner_uid,$entry_guid";
534
535 $entry_guid_hashed = db_escape_string('SHA1:' . sha1($entry_guid));
536
537 _debug("guid $entry_guid / $entry_guid_hashed", $debug_enabled);
538
539 $entry_timestamp = "";
540
541 $entry_timestamp = strtotime($item->get_date());
542
543 if ($entry_timestamp == -1 || !$entry_timestamp || $entry_timestamp > time()) {
544 $entry_timestamp = time();
545 $no_orig_date = 'true';
546 } else {
547 $no_orig_date = 'false';
548 }
549
550 $entry_timestamp_fmt = strftime("%Y/%m/%d %H:%M:%S", $entry_timestamp);
551
552 _debug("date $entry_timestamp [$entry_timestamp_fmt]", $debug_enabled);
553
554 $entry_title = html_entity_decode($item->get_title(), ENT_COMPAT, 'UTF-8');
555
556 $entry_link = rewrite_relative_url($site_url, $item->get_link());
557
558 _debug("title $entry_title", $debug_enabled);
559 _debug("link $entry_link", $debug_enabled);
560
561 if (!$entry_title) $entry_title = date("Y-m-d H:i:s", $entry_timestamp);;
562
563 $entry_content = $item->get_content();
564 if (!$entry_content) $entry_content = $item->get_description();
565
566 if ($_REQUEST["xdebug"] == 2) {
567 print "content: ";
568 print $entry_content;
569 print "\n";
570 }
571
572 $entry_comments = $item->data["comments"];
573
574 if ($item->get_author()) {
575 $entry_author_item = $item->get_author();
576 $entry_author = $entry_author_item->get_name();
577 if (!$entry_author) $entry_author = $entry_author_item->get_email();
578 }
579
580 $entry_guid = db_escape_string(mb_substr($entry_guid, 0, 245));
581
582 $entry_comments = db_escape_string(mb_substr(trim($entry_comments), 0, 245));
583 $entry_author = db_escape_string(mb_substr(trim($entry_author), 0, 245));
584
585 $num_comments = $item->get_item_tags('http://purl.org/rss/1.0/modules/slash/', 'comments');
586
587 if (is_array($num_comments) && is_array($num_comments[0])) {
588 $num_comments = (int) $num_comments[0]["data"];
589 } else {
590 $num_comments = 0;
591 }
592
593 _debug("author $entry_author", $debug_enabled);
594 _debug("num_comments: $num_comments", $debug_enabled);
595 _debug("looking for tags [1]...", $debug_enabled);
596
597 // parse <category> entries into tags
598
599 $additional_tags = array();
600
601 $additional_tags_src = $item->get_categories();
602
603 if (is_array($additional_tags_src)) {
604 foreach ($additional_tags_src as $tobj) {
605 array_push($additional_tags, $tobj->get_term());
606 }
607 }
608
609 _debug("category tags:", $debug_enabled);
610 _debug("looking for tags [2]...", $debug_enabled);
611
612 $entry_tags = array_unique($additional_tags);
613
614 for ($i = 0; $i < count($entry_tags); $i++)
615 $entry_tags[$i] = mb_strtolower($entry_tags[$i], 'utf-8');
616
617 _debug("done collecting data.", $debug_enabled);
618
619 // TODO: less memory-hungry implementation
620
621 _debug("applying plugin filters..", $debug_enabled);
622
623 // FIXME not sure if owner_uid is a good idea here, we may have a base entry without user entry (?)
624 $result = db_query("SELECT plugin_data,title,content,link,tag_cache,author FROM ttrss_entries, ttrss_user_entries
625 WHERE ref_id = id AND (guid = '".db_escape_string($entry_guid)."' OR guid = '$entry_guid_hashed') AND owner_uid = $owner_uid");
626
627 if (db_num_rows($result) != 0) {
628 $entry_plugin_data = db_fetch_result($result, 0, "plugin_data");
629 $stored_article = array("title" => db_fetch_result($result, 0, "title"),
630 "content" => db_fetch_result($result, 0, "content"),
631 "link" => db_fetch_result($result, 0, "link"),
632 "tags" => explode(",", db_fetch_result($result, 0, "tag_cache")),
633 "author" => db_fetch_result($result, 0, "author"));
634 } else {
635 $entry_plugin_data = "";
636 $stored_article = array();
637 }
638
639 $article = array("owner_uid" => $owner_uid, // read only
640 "guid" => $entry_guid, // read only
641 "title" => $entry_title,
642 "content" => $entry_content,
643 "link" => $entry_link,
644 "tags" => $entry_tags,
645 "plugin_data" => $entry_plugin_data,
646 "author" => $entry_author,
647 "stored" => $stored_article);
648
649 foreach ($pluginhost->get_hooks(PluginHost::HOOK_ARTICLE_FILTER) as $plugin) {
650 $article = $plugin->hook_article_filter($article);
651 }
652
653 $entry_tags = $article["tags"];
654 $entry_guid = db_escape_string($entry_guid);
655 $entry_title = db_escape_string($article["title"]);
656 $entry_author = db_escape_string($article["author"]);
657 $entry_link = db_escape_string($article["link"]);
658 $entry_plugin_data = db_escape_string($article["plugin_data"]);
659 $entry_content = $article["content"]; // escaped below
660
661
662 _debug("plugin data: $entry_plugin_data", $debug_enabled);
663
664 if ($cache_images && is_writable(CACHE_DIR . '/images'))
665 cache_images($entry_content, $site_url, $debug_enabled);
666
667 $entry_content = db_escape_string($entry_content, false);
668
669 $content_hash = "SHA1:" . sha1($entry_content);
670
671 db_query("BEGIN");
672
673 $result = db_query("SELECT id FROM ttrss_entries
674 WHERE (guid = '$entry_guid' OR guid = '$entry_guid_hashed')");
675
676 if (db_num_rows($result) == 0) {
677
678 _debug("base guid [$entry_guid] not found", $debug_enabled);
679
680 // base post entry does not exist, create it
681
682 $result = db_query(
683 "INSERT INTO ttrss_entries
684 (title,
685 guid,
686 link,
687 updated,
688 content,
689 content_hash,
690 cached_content,
691 no_orig_date,
692 date_updated,
693 date_entered,
694 comments,
695 num_comments,
696 plugin_data,
697 author)
698 VALUES
699 ('$entry_title',
700 '$entry_guid_hashed',
701 '$entry_link',
702 '$entry_timestamp_fmt',
703 '$entry_content',
704 '$content_hash',
705 '',
706 $no_orig_date,
707 NOW(),
708 '$date_feed_processed',
709 '$entry_comments',
710 '$num_comments',
711 '$entry_plugin_data',
712 '$entry_author')");
713
714 $article_labels = array();
715
716 } else {
717 // we keep encountering the entry in feeds, so we need to
718 // update date_updated column so that we don't get horrible
719 // dupes when the entry gets purged and reinserted again e.g.
720 // in the case of SLOW SLOW OMG SLOW updating feeds
721
722 $base_entry_id = db_fetch_result($result, 0, "id");
723
724 db_query("UPDATE ttrss_entries SET date_updated = NOW()
725 WHERE id = '$base_entry_id'");
726
727 $article_labels = get_article_labels($base_entry_id, $owner_uid);
728 }
729
730 // now it should exist, if not - bad luck then
731
732 $result = db_query("SELECT
733 id,content_hash,no_orig_date,title,plugin_data,guid,
734 ".SUBSTRING_FOR_DATE."(date_updated,1,19) as date_updated,
735 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated,
736 num_comments
737 FROM
738 ttrss_entries
739 WHERE guid = '$entry_guid' OR guid = '$entry_guid_hashed'");
740
741 $entry_ref_id = 0;
742 $entry_int_id = 0;
743
744 if (db_num_rows($result) == 1) {
745
746 _debug("base guid found, checking for user record", $debug_enabled);
747
748 // this will be used below in update handler
749 $orig_content_hash = db_fetch_result($result, 0, "content_hash");
750 $orig_title = db_fetch_result($result, 0, "title");
751 $orig_num_comments = db_fetch_result($result, 0, "num_comments");
752 $orig_date_updated = strtotime(db_fetch_result($result,
753 0, "date_updated"));
754 $orig_plugin_data = db_fetch_result($result, 0, "plugin_data");
755
756 $ref_id = db_fetch_result($result, 0, "id");
757 $entry_ref_id = $ref_id;
758
759 /* $stored_guid = db_fetch_result($result, 0, "guid");
760 if ($stored_guid != $entry_guid_hashed) {
761 if ($debug_enabled) _debug("upgrading compat guid to hashed one", $debug_enabled);
762
763 db_query("UPDATE ttrss_entries SET guid = '$entry_guid_hashed' WHERE
764 id = '$ref_id'");
765 } */
766
767 // check for user post link to main table
768
769 // do we allow duplicate posts with same GUID in different feeds?
770 if (get_pref("ALLOW_DUPLICATE_POSTS", $owner_uid, false)) {
771 $dupcheck_qpart = "AND (feed_id = '$feed' OR feed_id IS NULL)";
772 } else {
773 $dupcheck_qpart = "";
774 }
775
776 /* Collect article tags here so we could filter by them: */
777
778 $article_filters = get_article_filters($filters, $entry_title,
779 $entry_content, $entry_link, $entry_timestamp, $entry_author,
780 $entry_tags);
781
782 if ($debug_enabled) {
783 _debug("article filters: ", $debug_enabled);
784 if (count($article_filters) != 0) {
785 print_r($article_filters);
786 }
787 }
788
789 if (find_article_filter($article_filters, "filter")) {
790 db_query("COMMIT"); // close transaction in progress
791 continue;
792 }
793
794 $score = calculate_article_score($article_filters);
795
796 _debug("initial score: $score", $debug_enabled);
797
798 $query = "SELECT ref_id, int_id FROM ttrss_user_entries WHERE
799 ref_id = '$ref_id' AND owner_uid = '$owner_uid'
800 $dupcheck_qpart";
801
802 // if ($_REQUEST["xdebug"]) print "$query\n";
803
804 $result = db_query($query);
805
806 // okay it doesn't exist - create user entry
807 if (db_num_rows($result) == 0) {
808
809 _debug("user record not found, creating...", $debug_enabled);
810
811 if ($score >= -500 && !find_article_filter($article_filters, 'catchup')) {
812 $unread = 'true';
813 $last_read_qpart = 'NULL';
814 } else {
815 $unread = 'false';
816 $last_read_qpart = 'NOW()';
817 }
818
819 if (find_article_filter($article_filters, 'mark') || $score > 1000) {
820 $marked = 'true';
821 } else {
822 $marked = 'false';
823 }
824
825 if (find_article_filter($article_filters, 'publish')) {
826 $published = 'true';
827 } else {
828 $published = 'false';
829 }
830
831 // N-grams
832
833 if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_DUPLICATE_THRESHOLD')) {
834
835 $result = db_query("SELECT COUNT(*) AS similar FROM
836 ttrss_entries,ttrss_user_entries
837 WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
838 AND similarity(title, '$entry_title') >= "._NGRAM_TITLE_DUPLICATE_THRESHOLD."
839 AND owner_uid = $owner_uid");
840
841 $ngram_similar = db_fetch_result($result, 0, "similar");
842
843 _debug("N-gram similar results: $ngram_similar", $debug_enabled);
844
845 if ($ngram_similar > 0) {
846 $unread = 'false';
847 }
848 }
849
850 $last_marked = ($marked == 'true') ? 'NOW()' : 'NULL';
851 $last_published = ($published == 'true') ? 'NOW()' : 'NULL';
852
853 $result = db_query(
854 "INSERT INTO ttrss_user_entries
855 (ref_id, owner_uid, feed_id, unread, last_read, marked,
856 published, score, tag_cache, label_cache, uuid,
857 last_marked, last_published)
858 VALUES ('$ref_id', '$owner_uid', '$feed', $unread,
859 $last_read_qpart, $marked, $published, '$score', '', '',
860 '', $last_marked, $last_published)");
861
862 if (PUBSUBHUBBUB_HUB && $published == 'true') {
863 $rss_link = get_self_url_prefix() .
864 "/public.php?op=rss&id=-2&key=" .
865 get_feed_access_key(-2, false, $owner_uid);
866
867 $p = new Publisher(PUBSUBHUBBUB_HUB);
868
869 $pubsub_result = $p->publish_update($rss_link);
870 }
871
872 $result = db_query(
873 "SELECT int_id FROM ttrss_user_entries WHERE
874 ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND
875 feed_id = '$feed' LIMIT 1");
876
877 if (db_num_rows($result) == 1) {
878 $entry_int_id = db_fetch_result($result, 0, "int_id");
879 }
880 } else {
881 _debug("user record FOUND", $debug_enabled);
882
883 $entry_ref_id = db_fetch_result($result, 0, "ref_id");
884 $entry_int_id = db_fetch_result($result, 0, "int_id");
885 }
886
887 _debug("RID: $entry_ref_id, IID: $entry_int_id", $debug_enabled);
888
889 $post_needs_update = false;
890 $update_insignificant = false;
891
892 if ($orig_num_comments != $num_comments) {
893 $post_needs_update = true;
894 $update_insignificant = true;
895 }
896
897 if ($entry_plugin_data != $orig_plugin_data) {
898 $post_needs_update = true;
899 $update_insignificant = true;
900 }
901
902 if ($content_hash != $orig_content_hash) {
903 $post_needs_update = true;
904 $update_insignificant = false;
905 }
906
907 if (db_escape_string($orig_title) != $entry_title) {
908 $post_needs_update = true;
909 $update_insignificant = false;
910 }
911
912 // if post needs update, update it and mark all user entries
913 // linking to this post as updated
914 if ($post_needs_update) {
915
916 if (defined('DAEMON_EXTENDED_DEBUG')) {
917 _debug("post $entry_guid_hashed needs update...", $debug_enabled);
918 }
919
920 // print "<!-- post $orig_title needs update : $post_needs_update -->";
921
922 db_query("UPDATE ttrss_entries
923 SET title = '$entry_title', content = '$entry_content',
924 content_hash = '$content_hash',
925 updated = '$entry_timestamp_fmt',
926 num_comments = '$num_comments',
927 plugin_data = '$entry_plugin_data'
928 WHERE id = '$ref_id'");
929
930 if (!$update_insignificant) {
931 if ($mark_unread_on_update) {
932 db_query("UPDATE ttrss_user_entries
933 SET last_read = null, unread = true WHERE ref_id = '$ref_id'");
934 }
935 }
936 }
937 }
938
939 db_query("COMMIT");
940
941 _debug("assigning labels...", $debug_enabled);
942
943 assign_article_to_label_filters($entry_ref_id, $article_filters,
944 $owner_uid, $article_labels);
945
946 _debug("looking for enclosures...", $debug_enabled);
947
948 // enclosures
949
950 $enclosures = array();
951
952 $encs = $item->get_enclosures();
953
954 if (is_array($encs)) {
955 foreach ($encs as $e) {
956 $e_item = array(
957 $e->link, $e->type, $e->length);
958 array_push($enclosures, $e_item);
959 }
960 }
961
962 if ($debug_enabled) {
963 _debug("article enclosures:", $debug_enabled);
964 print_r($enclosures);
965 }
966
967 db_query("BEGIN");
968
969 foreach ($enclosures as $enc) {
970 $enc_url = db_escape_string($enc[0]);
971 $enc_type = db_escape_string($enc[1]);
972 $enc_dur = db_escape_string($enc[2]);
973
974 $result = db_query("SELECT id FROM ttrss_enclosures
975 WHERE content_url = '$enc_url' AND post_id = '$entry_ref_id'");
976
977 if (db_num_rows($result) == 0) {
978 db_query("INSERT INTO ttrss_enclosures
979 (content_url, content_type, title, duration, post_id) VALUES
980 ('$enc_url', '$enc_type', '', '$enc_dur', '$entry_ref_id')");
981 }
982 }
983
984 db_query("COMMIT");
985
986 // check for manual tags (we have to do it here since they're loaded from filters)
987
988 foreach ($article_filters as $f) {
989 if ($f["type"] == "tag") {
990
991 $manual_tags = trim_array(explode(",", $f["param"]));
992
993 foreach ($manual_tags as $tag) {
994 if (tag_is_valid($tag)) {
995 array_push($entry_tags, $tag);
996 }
997 }
998 }
999 }
1000
1001 // Skip boring tags
1002
1003 $boring_tags = trim_array(explode(",", mb_strtolower(get_pref(
1004 'BLACKLISTED_TAGS', $owner_uid, ''), 'utf-8')));
1005
1006 $filtered_tags = array();
1007 $tags_to_cache = array();
1008
1009 if ($entry_tags && is_array($entry_tags)) {
1010 foreach ($entry_tags as $tag) {
1011 if (array_search($tag, $boring_tags) === false) {
1012 array_push($filtered_tags, $tag);
1013 }
1014 }
1015 }
1016
1017 $filtered_tags = array_unique($filtered_tags);
1018
1019 if ($debug_enabled) {
1020 _debug("filtered article tags:", $debug_enabled);
1021 print_r($filtered_tags);
1022 }
1023
1024 // Save article tags in the database
1025
1026 if (count($filtered_tags) > 0) {
1027
1028 db_query("BEGIN");
1029
1030 foreach ($filtered_tags as $tag) {
1031
1032 $tag = sanitize_tag($tag);
1033 $tag = db_escape_string($tag);
1034
1035 if (!tag_is_valid($tag)) continue;
1036
1037 $result = db_query("SELECT id FROM ttrss_tags
1038 WHERE tag_name = '$tag' AND post_int_id = '$entry_int_id' AND
1039 owner_uid = '$owner_uid' LIMIT 1");
1040
1041 if ($result && db_num_rows($result) == 0) {
1042
1043 db_query("INSERT INTO ttrss_tags
1044 (owner_uid,tag_name,post_int_id)
1045 VALUES ('$owner_uid','$tag', '$entry_int_id')");
1046 }
1047
1048 array_push($tags_to_cache, $tag);
1049 }
1050
1051 /* update the cache */
1052
1053 $tags_to_cache = array_unique($tags_to_cache);
1054
1055 $tags_str = db_escape_string(join(",", $tags_to_cache));
1056
1057 db_query("UPDATE ttrss_user_entries
1058 SET tag_cache = '$tags_str' WHERE ref_id = '$entry_ref_id'
1059 AND owner_uid = $owner_uid");
1060
1061 db_query("COMMIT");
1062 }
1063
1064 if (get_pref("AUTO_ASSIGN_LABELS", $owner_uid, false)) {
1065 _debug("auto-assigning labels...", $debug_enabled);
1066
1067 foreach ($labels as $label) {
1068 $caption = preg_quote($label["caption"]);
1069
1070 if ($caption && preg_match("/\b$caption\b/i", "$tags_str " . strip_tags($entry_content) . " $entry_title")) {
1071 if (!labels_contains_caption($article_labels, $caption)) {
1072 label_add_article($entry_ref_id, $caption, $owner_uid);
1073 }
1074 }
1075 }
1076 }
1077
1078 _debug("article processed", $debug_enabled);
1079 }
1080
1081 if (!$last_updated) {
1082 _debug("new feed, catching it up...", $debug_enabled);
1083 catchup_feed($feed, false, $owner_uid);
1084 }
1085
1086 _debug("purging feed...", $debug_enabled);
1087
1088 purge_feed($feed, 0, $debug_enabled);
1089
1090 db_query("UPDATE ttrss_feeds
1091 SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
1092
1093 // db_query("COMMIT");
1094
1095 } else {
1096
1097 $error_msg = db_escape_string(mb_substr($rss->error(), 0, 245));
1098
1099 _debug("error fetching feed: $error_msg", $debug_enabled);
1100
1101 db_query(
1102 "UPDATE ttrss_feeds SET last_error = '$error_msg',
1103 last_updated = NOW() WHERE id = '$feed'");
1104 }
1105
1106 unset($rss);
1107
1108 _debug("done", $debug_enabled);
1109 }
1110
1111 function cache_images($html, $site_url, $debug) {
1112 $cache_dir = CACHE_DIR . "/images";
1113
1114 libxml_use_internal_errors(true);
1115
1116 $charset_hack = '<head>
1117 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
1118 </head>';
1119
1120 $doc = new DOMDocument();
1121 $doc->loadHTML($charset_hack . $html);
1122 $xpath = new DOMXPath($doc);
1123
1124 $entries = $xpath->query('(//img[@src])');
1125
1126 foreach ($entries as $entry) {
1127 if ($entry->hasAttribute('src')) {
1128 $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
1129
1130 $local_filename = CACHE_DIR . "/images/" . sha1($src) . ".png";
1131
1132 if ($debug) _debug("cache_images: downloading: $src to $local_filename");
1133
1134 if (!file_exists($local_filename)) {
1135 $file_content = fetch_file_contents($src);
1136
1137 if ($file_content && strlen($file_content) > 1024) {
1138 file_put_contents($local_filename, $file_content);
1139 }
1140 }
1141
1142 if (file_exists($local_filename)) {
1143 $entry->setAttribute('src', SELF_URL_PATH . '/image.php?url=' .
1144 base64_encode($src));
1145 }
1146 }
1147 }
1148
1149 $node = $doc->getElementsByTagName('body')->item(0);
1150
1151 return $doc->saveXML($node);
1152 }
1153
1154 function expire_error_log($debug) {
1155 if ($debug) _debug("Removing old error log entries...");
1156
1157 if (DB_TYPE == "pgsql") {
1158 db_query("DELETE FROM ttrss_error_log
1159 WHERE created_at < NOW() - INTERVAL '7 days'");
1160 } else {
1161 db_query("DELETE FROM ttrss_error_log
1162 WHERE created_at < DATE_SUB(NOW(), INTERVAL 7 DAY)");
1163 }
1164
1165 }
1166
1167 function expire_lock_files($debug) {
1168 //if ($debug) _debug("Removing old lock files...");
1169
1170 $num_deleted = 0;
1171
1172 if (is_writable(LOCK_DIRECTORY)) {
1173 $files = glob(LOCK_DIRECTORY . "/*.lock");
1174
1175 if ($files) {
1176 foreach ($files as $file) {
1177 if (!file_is_locked(basename($file)) && time() - filemtime($file) > 86400*2) {
1178 unlink($file);
1179 ++$num_deleted;
1180 }
1181 }
1182 }
1183 }
1184
1185 if ($debug) _debug("Removed $num_deleted old lock files.");
1186 }
1187
1188 function expire_cached_files($debug) {
1189 foreach (array("simplepie", "images", "export", "upload") as $dir) {
1190 $cache_dir = CACHE_DIR . "/$dir";
1191
1192 // if ($debug) _debug("Expiring $cache_dir");
1193
1194 $num_deleted = 0;
1195
1196 if (is_writable($cache_dir)) {
1197 $files = glob("$cache_dir/*");
1198
1199 if ($files) {
1200 foreach ($files as $file) {
1201 if (time() - filemtime($file) > 86400*7) {
1202 unlink($file);
1203
1204 ++$num_deleted;
1205 }
1206 }
1207 }
1208 }
1209
1210 if ($debug) _debug("$cache_dir: removed $num_deleted files.");
1211 }
1212 }
1213
1214 /**
1215 * Source: http://www.php.net/manual/en/function.parse-url.php#104527
1216 * Returns the url query as associative array
1217 *
1218 * @param string query
1219 * @return array params
1220 */
1221 function convertUrlQuery($query) {
1222 $queryParts = explode('&', $query);
1223
1224 $params = array();
1225
1226 foreach ($queryParts as $param) {
1227 $item = explode('=', $param);
1228 $params[$item[0]] = $item[1];
1229 }
1230
1231 return $params;
1232 }
1233
1234 function get_article_filters($filters, $title, $content, $link, $timestamp, $author, $tags) {
1235 $matches = array();
1236
1237 foreach ($filters as $filter) {
1238 $match_any_rule = $filter["match_any_rule"];
1239 $inverse = $filter["inverse"];
1240 $filter_match = false;
1241
1242 foreach ($filter["rules"] as $rule) {
1243 $match = false;
1244 $reg_exp = $rule["reg_exp"];
1245 $rule_inverse = $rule["inverse"];
1246
1247 if (!$reg_exp)
1248 continue;
1249
1250 switch ($rule["type"]) {
1251 case "title":
1252 $match = @preg_match("/$reg_exp/i", $title);
1253 break;
1254 case "content":
1255 // we don't need to deal with multiline regexps
1256 $content = preg_replace("/[\r\n\t]/", "", $content);
1257
1258 $match = @preg_match("/$reg_exp/i", $content);
1259 break;
1260 case "both":
1261 // we don't need to deal with multiline regexps
1262 $content = preg_replace("/[\r\n\t]/", "", $content);
1263
1264 $match = (@preg_match("/$reg_exp/i", $title) || @preg_match("/$reg_exp/i", $content));
1265 break;
1266 case "link":
1267 $match = @preg_match("/$reg_exp/i", $link);
1268 break;
1269 case "author":
1270 $match = @preg_match("/$reg_exp/i", $author);
1271 break;
1272 case "tag":
1273 $tag_string = join(",", $tags);
1274 $match = @preg_match("/$reg_exp/i", $tag_string);
1275 break;
1276 }
1277
1278 if ($rule_inverse) $match = !$match;
1279
1280 if ($match_any_rule) {
1281 if ($match) {
1282 $filter_match = true;
1283 break;
1284 }
1285 } else {
1286 $filter_match = $match;
1287 if (!$match) {
1288 break;
1289 }
1290 }
1291 }
1292
1293 if ($inverse) $filter_match = !$filter_match;
1294
1295 if ($filter_match) {
1296 foreach ($filter["actions"] AS $action) {
1297 array_push($matches, $action);
1298
1299 // if Stop action encountered, perform no further processing
1300 if ($action["type"] == "stop") return $matches;
1301 }
1302 }
1303 }
1304
1305 return $matches;
1306 }
1307
1308 function find_article_filter($filters, $filter_name) {
1309 foreach ($filters as $f) {
1310 if ($f["type"] == $filter_name) {
1311 return $f;
1312 };
1313 }
1314 return false;
1315 }
1316
1317 function find_article_filters($filters, $filter_name) {
1318 $results = array();
1319
1320 foreach ($filters as $f) {
1321 if ($f["type"] == $filter_name) {
1322 array_push($results, $f);
1323 };
1324 }
1325 return $results;
1326 }
1327
1328 function calculate_article_score($filters) {
1329 $score = 0;
1330
1331 foreach ($filters as $f) {
1332 if ($f["type"] == "score") {
1333 $score += $f["param"];
1334 };
1335 }
1336 return $score;
1337 }
1338
1339 function labels_contains_caption($labels, $caption) {
1340 foreach ($labels as $label) {
1341 if ($label[1] == $caption) {
1342 return true;
1343 }
1344 }
1345
1346 return false;
1347 }
1348
1349 function assign_article_to_label_filters($id, $filters, $owner_uid, $article_labels) {
1350 foreach ($filters as $f) {
1351 if ($f["type"] == "label") {
1352 if (!labels_contains_caption($article_labels, $f["param"])) {
1353 label_add_article($id, $f["param"], $owner_uid);
1354 }
1355 }
1356 }
1357 }
1358
1359 function make_guid_from_title($title) {
1360 return preg_replace("/[ \"\',.:;]/", "-",
1361 mb_strtolower(strip_tags($title), 'utf-8'));
1362 }
1363
1364 function verify_feed_xml($feed_data) {
1365 libxml_use_internal_errors(true);
1366 $doc = new DOMDocument();
1367 $doc->loadXML($feed_data);
1368 $error = libxml_get_last_error();
1369 libxml_clear_errors();
1370 return $error;
1371 }
1372
1373 function housekeeping_common($debug) {
1374 expire_cached_files($debug);
1375 expire_lock_files($debug);
1376 expire_error_log($debug);
1377
1378 $count = update_feedbrowser_cache();
1379 _debug("Feedbrowser updated, $count feeds processed.");
1380
1381 purge_orphans( true);
1382 $rc = cleanup_tags( 14, 50000);
1383
1384 _debug("Cleaned $rc cached tags.");
1385 }
1386 ?>
web-based news feed (RSS/Atom) reader and aggregator; see https://tt-rss.org/