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remove purging of inactive feeds in daemon_common (causes duplicates)
[tt-rss.git] / include / rssfuncs.php
1 <?php
2 define('DAEMON_UPDATE_LOGIN_LIMIT', 30);
3 define('DAEMON_FEED_LIMIT', 100);
4 define('DAEMON_SLEEP_INTERVAL', 60);
5
6 function update_feedbrowser_cache($link) {
7
8 $result = db_query($link, "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($link, "BEGIN");
15
16 db_query($link, "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 $tmp_result = db_query($link, "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($link, "INSERT INTO ttrss_feedbrowser_cache
32 (feed_url, site_url, title, subscribers) VALUES ('$feed_url',
33 '$site_url', '$title', '$subscribers')");
34
35 ++$count;
36
37 }
38
39 }
40
41 db_query($link, "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 $debug Set to false to disable debug output. Default to true.
58 * @return void
59 */
60 function update_daemon_common($link, $limit = DAEMON_FEED_LIMIT, $from_http = false, $debug = true) {
61 // Process all other feeds using last_updated and interval parameters
62
63 define('PREFS_NO_CACHE', true);
64
65 // Test if the user has loggued in recently. If not, it does not update its feeds.
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 // Test if the feed need a update (update interval exceded).
77 if (DB_TYPE == "pgsql") {
78 $update_limit_qpart = "AND ((
79 ttrss_feeds.update_interval = 0
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 OR last_updated = '1970-01-01 00:00:00')";
86 } else {
87 $update_limit_qpart = "AND ((
88 ttrss_feeds.update_interval = 0
89 AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL CONVERT(ttrss_user_prefs.value, SIGNED INTEGER) MINUTE)
90 ) OR (
91 ttrss_feeds.update_interval > 0
92 AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL ttrss_feeds.update_interval MINUTE)
93 ) OR ttrss_feeds.last_updated IS NULL
94 OR last_updated = '1970-01-01 00:00:00')";
95 }
96
97 // Test if feed is currently being updated by another process.
98 if (DB_TYPE == "pgsql") {
99 $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < NOW() - INTERVAL '5 minutes')";
100 } else {
101 $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < DATE_SUB(NOW(), INTERVAL 5 MINUTE))";
102 }
103
104 // Test if there is a limit to number of updated feeds
105 $query_limit = "";
106 if($limit) $query_limit = sprintf("LIMIT %d", $limit);
107
108 $random_qpart = sql_random_function();
109
110 // We search for feed needing update.
111 $result = db_query($link, "SELECT ttrss_feeds.feed_url,ttrss_feeds.id, ttrss_feeds.owner_uid,
112 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
113 ttrss_feeds.update_interval
114 FROM
115 ttrss_feeds, ttrss_users, ttrss_user_prefs
116 WHERE
117 ttrss_feeds.owner_uid = ttrss_users.id
118 AND ttrss_users.id = ttrss_user_prefs.owner_uid
119 AND ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL'
120 $login_thresh_qpart $update_limit_qpart
121 $updstart_thresh_qpart
122 ORDER BY $random_qpart $query_limit");
123
124 $user_prefs_cache = array();
125
126 if($debug) _debug(sprintf("Scheduled %d feeds to update...\n", db_num_rows($result)));
127
128 // Here is a little cache magic in order to minimize risk of double feed updates.
129 $feeds_to_update = array();
130 while ($line = db_fetch_assoc($result)) {
131 $feeds_to_update[$line['id']] = $line;
132 }
133
134 // We update the feed last update started date before anything else.
135 // There is no lag due to feed contents downloads
136 // It prevent an other process to update the same feed.
137 $feed_ids = array_keys($feeds_to_update);
138 if($feed_ids) {
139 db_query($link, sprintf("UPDATE ttrss_feeds SET last_update_started = NOW()
140 WHERE id IN (%s)", implode(',', $feed_ids)));
141 }
142
143 expire_cached_files($debug);
144 expire_lock_files($debug);
145
146 // For each feed, we call the feed update function.
147 while ($line = array_pop($feeds_to_update)) {
148
149 if($debug) _debug("Feed: " . $line["feed_url"] . ", " . $line["last_updated"]);
150
151 update_rss_feed($link, $line["id"], true);
152
153 sleep(1); // prevent flood (FIXME make this an option?)
154 }
155
156 require_once "digest.php";
157
158 // Send feed digests by email if needed.
159 send_headlines_digests($link, $debug);
160
161 } // function update_daemon_common
162
163 // ignore_daemon is not used
164 function update_rss_feed($link, $feed, $ignore_daemon = false, $no_cache = false,
165 $override_url = false) {
166
167 require_once "lib/simplepie/simplepie.inc";
168
169 $debug_enabled = defined('DAEMON_EXTENDED_DEBUG') || $_REQUEST['xdebug'];
170
171 if ($debug_enabled) {
172 _debug("update_rss_feed: start");
173 }
174
175 $result = db_query($link, "SELECT id,update_interval,auth_login,
176 feed_url,auth_pass,cache_images,last_updated,
177 mark_unread_on_update, owner_uid,
178 pubsub_state
179 FROM ttrss_feeds WHERE id = '$feed'");
180
181 if (db_num_rows($result) == 0) {
182 if ($debug_enabled) {
183 _debug("update_rss_feed: feed $feed NOT FOUND/SKIPPED");
184 }
185 return false;
186 }
187
188 $last_updated = db_fetch_result($result, 0, "last_updated");
189 $owner_uid = db_fetch_result($result, 0, "owner_uid");
190 $mark_unread_on_update = sql_bool_to_bool(db_fetch_result($result,
191 0, "mark_unread_on_update"));
192 $pubsub_state = db_fetch_result($result, 0, "pubsub_state");
193
194 db_query($link, "UPDATE ttrss_feeds SET last_update_started = NOW()
195 WHERE id = '$feed'");
196
197 $auth_login = db_fetch_result($result, 0, "auth_login");
198 $auth_pass = db_fetch_result($result, 0, "auth_pass");
199
200 $cache_images = sql_bool_to_bool(db_fetch_result($result, 0, "cache_images"));
201 $fetch_url = db_fetch_result($result, 0, "feed_url");
202
203 $feed = db_escape_string($feed);
204
205 /* if ($auth_login && $auth_pass ){
206 $url_parts = array();
207 preg_match("/(^[^:]*):\/\/(.*)/", $fetch_url, $url_parts);
208
209 if ($url_parts[1] && $url_parts[2]) {
210 $fetch_url = $url_parts[1] . "://$auth_login:$auth_pass@" . $url_parts[2];
211 }
212 } */
213
214 if ($override_url)
215 $fetch_url = $override_url;
216
217 if ($debug_enabled) {
218 _debug("update_rss_feed: fetching [$fetch_url]...");
219 }
220
221 // Ignore cache if new feed or manual update.
222 $cache_age = (is_null($last_updated) || $last_updated == '1970-01-01 00:00:00') ?
223 -1 : get_feed_update_interval($link, $feed) * 60;
224
225 $simplepie_cache_dir = CACHE_DIR . "/simplepie";
226
227 if (!is_dir($simplepie_cache_dir)) {
228 mkdir($simplepie_cache_dir);
229 }
230
231 $feed_data = fetch_file_contents($fetch_url, false,
232 $auth_login, $auth_pass, false, $no_cache ? 15 : 45);
233
234 if (!$feed_data) {
235 global $fetch_last_error;
236
237 if ($debug_enabled) {
238 _debug("update_rss_feed: unable to fetch: $fetch_last_error");
239 }
240
241 db_query($link,
242 "UPDATE ttrss_feeds SET last_error = '$fetch_last_error',
243 last_updated = NOW() WHERE id = '$feed'");
244
245 return;
246 }
247
248 $pluginhost = new PluginHost($link);
249 $pluginhost->set_debug($debug_enabled);
250 $user_plugins = get_pref($link, "_ENABLED_PLUGINS", $owner_uid);
251
252 $pluginhost->load(PLUGINS, $pluginhost::KIND_ALL);
253 $pluginhost->load($user_plugins, $pluginhost::KIND_USER, $owner_uid);
254 $pluginhost->load_data();
255
256 foreach ($pluginhost->get_hooks($pluginhost::HOOK_FEED_FETCHED) as $plugin) {
257 $feed_data = $plugin->hook_feed_fetched($feed_data);
258 }
259
260 if ($debug_enabled) {
261 _debug("update_rss_feed: fetch done, parsing...");
262 }
263
264 $rss = new SimplePie();
265 $rss->set_sanitize_class("SanitizeDummy");
266 // simplepie ignores the above and creates default sanitizer anyway,
267 // so let's override it...
268 $rss->sanitize = new SanitizeDummy();
269 $rss->set_output_encoding('UTF-8');
270 $rss->set_raw_data($feed_data);
271
272 if ($debug_enabled) {
273 _debug("feed update interval (sec): " .
274 get_feed_update_interval($link, $feed)*60);
275 }
276
277 $rss->enable_cache(!$no_cache);
278
279 if (!$no_cache) {
280 $rss->set_cache_location($simplepie_cache_dir);
281 $rss->set_cache_duration($cache_age);
282 }
283
284 @$rss->init();
285
286 // print_r($rss);
287
288 $feed = db_escape_string($feed);
289
290 if (!$rss->error()) {
291
292 // We use local pluginhost here because we need to load different per-user feed plugins
293 $pluginhost->run_hooks($pluginhost::HOOK_FEED_PARSED, "hook_feed_parsed", $rss);
294
295 if ($debug_enabled) {
296 _debug("update_rss_feed: processing feed data...");
297 }
298
299 // db_query($link, "BEGIN");
300
301 if (DB_TYPE == "pgsql") {
302 $favicon_interval_qpart = "favicon_last_checked < NOW() - INTERVAL '12 hour'";
303 } else {
304 $favicon_interval_qpart = "favicon_last_checked < DATE_SUB(NOW(), INTERVAL 12 HOUR)";
305 }
306
307 $result = db_query($link, "SELECT title,site_url,owner_uid,
308 (favicon_last_checked IS NULL OR $favicon_interval_qpart) AS
309 favicon_needs_check
310 FROM ttrss_feeds WHERE id = '$feed'");
311
312 $registered_title = db_fetch_result($result, 0, "title");
313 $orig_site_url = db_fetch_result($result, 0, "site_url");
314 $favicon_needs_check = sql_bool_to_bool(db_fetch_result($result, 0,
315 "favicon_needs_check"));
316
317 $owner_uid = db_fetch_result($result, 0, "owner_uid");
318
319 $site_url = db_escape_string(mb_substr(rewrite_relative_url($fetch_url, $rss->get_link()), 0, 245));
320
321 if ($debug_enabled) {
322 _debug("update_rss_feed: checking favicon...");
323 }
324
325 if ($favicon_needs_check) {
326 check_feed_favicon($site_url, $feed, $link);
327
328 db_query($link, "UPDATE ttrss_feeds SET favicon_last_checked = NOW()
329 WHERE id = '$feed'");
330 }
331
332 if (!$registered_title || $registered_title == "[Unknown]") {
333
334 $feed_title = db_escape_string($rss->get_title());
335
336 if ($debug_enabled) {
337 _debug("update_rss_feed: registering title: $feed_title");
338 }
339
340 db_query($link, "UPDATE ttrss_feeds SET
341 title = '$feed_title' WHERE id = '$feed'");
342 }
343
344 if ($site_url && $orig_site_url != $site_url) {
345 db_query($link, "UPDATE ttrss_feeds SET
346 site_url = '$site_url' WHERE id = '$feed'");
347 }
348
349 if ($debug_enabled) {
350 _debug("update_rss_feed: loading filters & labels...");
351 }
352
353 $filters = load_filters($link, $feed, $owner_uid);
354 $labels = get_all_labels($link, $owner_uid);
355
356 if ($debug_enabled) {
357 //print_r($filters);
358 _debug("update_rss_feed: " . count($filters) . " filters loaded.");
359 }
360
361 $items = $rss->get_items();
362
363 if (!is_array($items)) {
364 if ($debug_enabled) {
365 _debug("update_rss_feed: no articles found.");
366 }
367
368 db_query($link, "UPDATE ttrss_feeds
369 SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
370
371 return; // no articles
372 }
373
374 if ($pubsub_state != 2 && PUBSUBHUBBUB_ENABLED) {
375
376 if ($debug_enabled) _debug("update_rss_feed: checking for PUSH hub...");
377
378 $feed_hub_url = false;
379
380 $links = $rss->get_links('hub');
381
382 if ($links && is_array($links)) {
383 foreach ($links as $l) {
384 $feed_hub_url = $l;
385 break;
386 }
387 }
388
389 if ($debug_enabled) _debug("update_rss_feed: feed hub url: $feed_hub_url");
390
391 if ($feed_hub_url && function_exists('curl_init') &&
392 !ini_get("open_basedir")) {
393
394 require_once 'lib/pubsubhubbub/subscriber.php';
395
396 $callback_url = get_self_url_prefix() .
397 "/public.php?op=pubsub&id=$feed";
398
399 $s = new Subscriber($feed_hub_url, $callback_url);
400
401 $rc = $s->subscribe($fetch_url);
402
403 if ($debug_enabled)
404 _debug("update_rss_feed: feed hub url found, subscribe request sent.");
405
406 db_query($link, "UPDATE ttrss_feeds SET pubsub_state = 1
407 WHERE id = '$feed'");
408 }
409 }
410
411 if ($debug_enabled) {
412 _debug("update_rss_feed: processing articles...");
413 }
414
415 foreach ($items as $item) {
416 if ($_REQUEST['xdebug'] == 3) {
417 print_r($item);
418 }
419
420 $entry_guid = $item->get_id();
421 if (!$entry_guid) $entry_guid = $item->get_link();
422 if (!$entry_guid) $entry_guid = make_guid_from_title($item->get_title());
423
424 if ($debug_enabled) {
425 _debug("update_rss_feed: guid $entry_guid");
426 }
427
428 if (!$entry_guid) continue;
429
430 $entry_guid = "$owner_uid,$entry_guid";
431
432 $entry_timestamp = "";
433
434 $entry_timestamp = strtotime($item->get_date());
435
436 if ($entry_timestamp == -1 || !$entry_timestamp) {
437 $entry_timestamp = time();
438 $no_orig_date = 'true';
439 } else {
440 $no_orig_date = 'false';
441 }
442
443 $entry_timestamp_fmt = strftime("%Y/%m/%d %H:%M:%S", $entry_timestamp);
444
445 if ($debug_enabled) {
446 _debug("update_rss_feed: date $entry_timestamp [$entry_timestamp_fmt]");
447 }
448
449 $entry_title = $item->get_title();
450
451 $entry_link = rewrite_relative_url($site_url, $item->get_link());
452
453 if ($debug_enabled) {
454 _debug("update_rss_feed: title $entry_title");
455 _debug("update_rss_feed: link $entry_link");
456 }
457
458 if (!$entry_title) $entry_title = date("Y-m-d H:i:s", $entry_timestamp);;
459
460 $entry_content = $item->get_content();
461 if (!$entry_content) $entry_content = $item->get_description();
462
463 if ($_REQUEST["xdebug"] == 2) {
464 print "update_rss_feed: content: ";
465 print $entry_content;
466 print "\n";
467 }
468
469 $entry_comments = $item->data["comments"];
470
471 if ($item->get_author()) {
472 $entry_author_item = $item->get_author();
473 $entry_author = $entry_author_item->get_name();
474 if (!$entry_author) $entry_author = $entry_author_item->get_email();
475
476 $entry_author = db_escape_string($entry_author);
477 }
478
479 $entry_guid = db_escape_string(mb_substr($entry_guid, 0, 245));
480
481 $entry_comments = db_escape_string(mb_substr($entry_comments, 0, 245));
482 $entry_author = db_escape_string(mb_substr($entry_author, 0, 245));
483
484 $num_comments = $item->get_item_tags('http://purl.org/rss/1.0/modules/slash/', 'comments');
485
486 if (is_array($num_comments) && is_array($num_comments[0])) {
487 $num_comments = (int) $num_comments[0]["data"];
488 } else {
489 $num_comments = 0;
490 }
491
492 if ($debug_enabled) {
493 _debug("update_rss_feed: num_comments: $num_comments");
494 _debug("update_rss_feed: looking for tags [1]...");
495 }
496
497 // parse <category> entries into tags
498
499 $additional_tags = array();
500
501 $additional_tags_src = $item->get_categories();
502
503 if (is_array($additional_tags_src)) {
504 foreach ($additional_tags_src as $tobj) {
505 array_push($additional_tags, $tobj->get_term());
506 }
507 }
508
509 if ($debug_enabled) {
510 _debug("update_rss_feed: category tags:");
511 print_r($additional_tags);
512 }
513
514 if ($debug_enabled) {
515 _debug("update_rss_feed: looking for tags [2]...");
516 }
517
518 $entry_tags = array_unique($additional_tags);
519
520 for ($i = 0; $i < count($entry_tags); $i++)
521 $entry_tags[$i] = mb_strtolower($entry_tags[$i], 'utf-8');
522
523 if ($debug_enabled) {
524 //_debug("update_rss_feed: unfiltered tags found:");
525 //print_r($entry_tags);
526 }
527
528 if ($debug_enabled) {
529 _debug("update_rss_feed: done collecting data.");
530 }
531
532 // TODO: less memory-hungry implementation
533
534 if ($debug_enabled) {
535 _debug("update_rss_feed: applying plugin filters..");
536 }
537
538 // FIXME not sure if owner_uid is a good idea here, we may have a base entry without user entry (?)
539 $result = db_query($link, "SELECT plugin_data,title,content,link,tag_cache,author FROM ttrss_entries, ttrss_user_entries
540 WHERE ref_id = id AND guid = '".db_escape_string($entry_guid)."' AND owner_uid = $owner_uid");
541
542 if (db_num_rows($result) != 0) {
543 $entry_plugin_data = db_fetch_result($result, 0, "plugin_data");
544 $stored_article = array("title" => db_fetch_result($result, 0, "title"),
545 "content" => db_fetch_result($result, 0, "content"),
546 "link" => db_fetch_result($result, 0, "link"),
547 "tags" => explode(",", db_fetch_result($result, 0, "tag_cache")),
548 "author" => db_fetch_result($result, 0, "author"));
549 } else {
550 $entry_plugin_data = "";
551 $stored_article = array();
552 }
553
554 $article = array("owner_uid" => $owner_uid, // read only
555 "guid" => $entry_guid, // read only
556 "title" => $entry_title,
557 "content" => $entry_content,
558 "link" => $entry_link,
559 "tags" => $entry_tags,
560 "plugin_data" => $entry_plugin_data,
561 "author" => $entry_author,
562 "stored" => $stored_article);
563
564 foreach ($pluginhost->get_hooks($pluginhost::HOOK_ARTICLE_FILTER) as $plugin) {
565 $article = $plugin->hook_article_filter($article);
566 }
567
568 $entry_tags = $article["tags"];
569 $entry_guid = db_escape_string($entry_guid);
570 $entry_content = db_escape_string($article["content"], false);
571 $entry_title = db_escape_string($article["title"]);
572 $entry_author = db_escape_string($article["author"]);
573 $entry_link = db_escape_string($article["link"]);
574 $entry_plugin_data = db_escape_string($article["plugin_data"]);
575
576 if ($debug_enabled) {
577 _debug("update_rss_feed: plugin data: $entry_plugin_data");
578 }
579
580 if ($cache_images && is_writable(CACHE_DIR . '/images'))
581 $entry_content = cache_images($entry_content, $site_url, $debug_enabled);
582
583 $content_hash = "SHA1:" . sha1($entry_content);
584
585 db_query($link, "BEGIN");
586
587 $result = db_query($link, "SELECT id FROM ttrss_entries
588 WHERE guid = '$entry_guid'");
589
590 if (db_num_rows($result) == 0) {
591
592 if ($debug_enabled) {
593 _debug("update_rss_feed: base guid [$entry_guid] not found");
594 }
595
596 // base post entry does not exist, create it
597
598 $result = db_query($link,
599 "INSERT INTO ttrss_entries
600 (title,
601 guid,
602 link,
603 updated,
604 content,
605 content_hash,
606 cached_content,
607 no_orig_date,
608 date_updated,
609 date_entered,
610 comments,
611 num_comments,
612 plugin_data,
613 author)
614 VALUES
615 ('$entry_title',
616 '$entry_guid',
617 '$entry_link',
618 '$entry_timestamp_fmt',
619 '$entry_content',
620 '$content_hash',
621 '',
622 $no_orig_date,
623 NOW(),
624 NOW(),
625 '$entry_comments',
626 '$num_comments',
627 '$entry_plugin_data',
628 '$entry_author')");
629
630 $article_labels = array();
631
632 } else {
633 // we keep encountering the entry in feeds, so we need to
634 // update date_updated column so that we don't get horrible
635 // dupes when the entry gets purged and reinserted again e.g.
636 // in the case of SLOW SLOW OMG SLOW updating feeds
637
638 $base_entry_id = db_fetch_result($result, 0, "id");
639
640 db_query($link, "UPDATE ttrss_entries SET date_updated = NOW()
641 WHERE id = '$base_entry_id'");
642
643 $article_labels = get_article_labels($link, $base_entry_id, $owner_uid);
644 }
645
646 // now it should exist, if not - bad luck then
647
648 $result = db_query($link, "SELECT
649 id,content_hash,no_orig_date,title,plugin_data,
650 ".SUBSTRING_FOR_DATE."(date_updated,1,19) as date_updated,
651 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated,
652 num_comments
653 FROM
654 ttrss_entries
655 WHERE guid = '$entry_guid'");
656
657 $entry_ref_id = 0;
658 $entry_int_id = 0;
659
660 if (db_num_rows($result) == 1) {
661
662 if ($debug_enabled) {
663 _debug("update_rss_feed: base guid [$entry_guid] found, checking for user record");
664 }
665
666 // this will be used below in update handler
667 $orig_content_hash = db_fetch_result($result, 0, "content_hash");
668 $orig_title = db_fetch_result($result, 0, "title");
669 $orig_num_comments = db_fetch_result($result, 0, "num_comments");
670 $orig_date_updated = strtotime(db_fetch_result($result,
671 0, "date_updated"));
672 $orig_plugin_data = db_fetch_result($result, 0, "plugin_data");
673
674 $ref_id = db_fetch_result($result, 0, "id");
675 $entry_ref_id = $ref_id;
676
677 // check for user post link to main table
678
679 // do we allow duplicate posts with same GUID in different feeds?
680 if (get_pref($link, "ALLOW_DUPLICATE_POSTS", $owner_uid, false)) {
681 $dupcheck_qpart = "AND (feed_id = '$feed' OR feed_id IS NULL)";
682 } else {
683 $dupcheck_qpart = "";
684 }
685
686 /* Collect article tags here so we could filter by them: */
687
688 $article_filters = get_article_filters($filters, $entry_title,
689 $entry_content, $entry_link, $entry_timestamp, $entry_author,
690 $entry_tags);
691
692 if ($debug_enabled) {
693 _debug("update_rss_feed: article filters: ");
694 if (count($article_filters) != 0) {
695 print_r($article_filters);
696 }
697 }
698
699 if (find_article_filter($article_filters, "filter")) {
700 db_query($link, "COMMIT"); // close transaction in progress
701 continue;
702 }
703
704 $score = calculate_article_score($article_filters);
705
706 if ($debug_enabled) {
707 _debug("update_rss_feed: initial score: $score");
708 }
709
710 $query = "SELECT ref_id, int_id FROM ttrss_user_entries WHERE
711 ref_id = '$ref_id' AND owner_uid = '$owner_uid'
712 $dupcheck_qpart";
713
714 // if ($_REQUEST["xdebug"]) print "$query\n";
715
716 $result = db_query($link, $query);
717
718 // okay it doesn't exist - create user entry
719 if (db_num_rows($result) == 0) {
720
721 if ($debug_enabled) {
722 _debug("update_rss_feed: user record not found, creating...");
723 }
724
725 if ($score >= -500 && !find_article_filter($article_filters, 'catchup')) {
726 $unread = 'true';
727 $last_read_qpart = 'NULL';
728 } else {
729 $unread = 'false';
730 $last_read_qpart = 'NOW()';
731 }
732
733 if (find_article_filter($article_filters, 'mark') || $score > 1000) {
734 $marked = 'true';
735 } else {
736 $marked = 'false';
737 }
738
739 if (find_article_filter($article_filters, 'publish')) {
740 $published = 'true';
741 } else {
742 $published = 'false';
743 }
744
745 // N-grams
746
747 if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_DUPLICATE_THRESHOLD')) {
748
749 $result = db_query($link, "SELECT COUNT(*) AS similar FROM
750 ttrss_entries,ttrss_user_entries
751 WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
752 AND similarity(title, '$entry_title') >= "._NGRAM_TITLE_DUPLICATE_THRESHOLD."
753 AND owner_uid = $owner_uid");
754
755 $ngram_similar = db_fetch_result($result, 0, "similar");
756
757 if ($debug_enabled) {
758 _debug("update_rss_feed: N-gram similar results: $ngram_similar");
759 }
760
761 if ($ngram_similar > 0) {
762 $unread = 'false';
763 }
764 }
765
766 $result = db_query($link,
767 "INSERT INTO ttrss_user_entries
768 (ref_id, owner_uid, feed_id, unread, last_read, marked,
769 published, score, tag_cache, label_cache, uuid)
770 VALUES ('$ref_id', '$owner_uid', '$feed', $unread,
771 $last_read_qpart, $marked, $published, '$score', '', '', '')");
772
773 if (PUBSUBHUBBUB_HUB && $published == 'true') {
774 $rss_link = get_self_url_prefix() .
775 "/public.php?op=rss&id=-2&key=" .
776 get_feed_access_key($link, -2, false, $owner_uid);
777
778 $p = new Publisher(PUBSUBHUBBUB_HUB);
779
780 $pubsub_result = $p->publish_update($rss_link);
781 }
782
783 $result = db_query($link,
784 "SELECT int_id FROM ttrss_user_entries WHERE
785 ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND
786 feed_id = '$feed' LIMIT 1");
787
788 if (db_num_rows($result) == 1) {
789 $entry_int_id = db_fetch_result($result, 0, "int_id");
790 }
791 } else {
792 if ($debug_enabled) {
793 _debug("update_rss_feed: user record FOUND");
794 }
795
796 $entry_ref_id = db_fetch_result($result, 0, "ref_id");
797 $entry_int_id = db_fetch_result($result, 0, "int_id");
798 }
799
800 if ($debug_enabled) {
801 _debug("update_rss_feed: RID: $entry_ref_id, IID: $entry_int_id");
802 }
803
804 $post_needs_update = false;
805 $update_insignificant = false;
806
807 if ($orig_num_comments != $num_comments) {
808 $post_needs_update = true;
809 $update_insignificant = true;
810 }
811
812 if ($entry_plugin_data != $orig_plugin_data) {
813 $post_needs_update = true;
814 $update_insignificant = true;
815 }
816
817 if ($content_hash != $orig_content_hash) {
818 $post_needs_update = true;
819 $update_insignificant = false;
820 }
821
822 if (db_escape_string($orig_title) != $entry_title) {
823 $post_needs_update = true;
824 $update_insignificant = false;
825 }
826
827 // if post needs update, update it and mark all user entries
828 // linking to this post as updated
829 if ($post_needs_update) {
830
831 if (defined('DAEMON_EXTENDED_DEBUG')) {
832 _debug("update_rss_feed: post $entry_guid needs update...");
833 }
834
835 // print "<!-- post $orig_title needs update : $post_needs_update -->";
836
837 db_query($link, "UPDATE ttrss_entries
838 SET title = '$entry_title', content = '$entry_content',
839 content_hash = '$content_hash',
840 updated = '$entry_timestamp_fmt',
841 num_comments = '$num_comments',
842 plugin_data = '$entry_plugin_data'
843 WHERE id = '$ref_id'");
844
845 if (!$update_insignificant) {
846 if ($mark_unread_on_update) {
847 db_query($link, "UPDATE ttrss_user_entries
848 SET last_read = null, unread = true WHERE ref_id = '$ref_id'");
849 }
850 }
851 }
852 }
853
854 db_query($link, "COMMIT");
855
856 if ($debug_enabled) {
857 _debug("update_rss_feed: assigning labels...");
858 }
859
860 assign_article_to_label_filters($link, $entry_ref_id, $article_filters,
861 $owner_uid, $article_labels);
862
863 if ($debug_enabled) {
864 _debug("update_rss_feed: looking for enclosures...");
865 }
866
867 // enclosures
868
869 $enclosures = array();
870
871 $encs = $item->get_enclosures();
872
873 if (is_array($encs)) {
874 foreach ($encs as $e) {
875 $e_item = array(
876 $e->link, $e->type, $e->length);
877 array_push($enclosures, $e_item);
878 }
879 }
880
881 if ($debug_enabled) {
882 _debug("update_rss_feed: article enclosures:");
883 print_r($enclosures);
884 }
885
886 db_query($link, "BEGIN");
887
888 foreach ($enclosures as $enc) {
889 $enc_url = db_escape_string($enc[0]);
890 $enc_type = db_escape_string($enc[1]);
891 $enc_dur = db_escape_string($enc[2]);
892
893 $result = db_query($link, "SELECT id FROM ttrss_enclosures
894 WHERE content_url = '$enc_url' AND post_id = '$entry_ref_id'");
895
896 if (db_num_rows($result) == 0) {
897 db_query($link, "INSERT INTO ttrss_enclosures
898 (content_url, content_type, title, duration, post_id) VALUES
899 ('$enc_url', '$enc_type', '', '$enc_dur', '$entry_ref_id')");
900 }
901 }
902
903 db_query($link, "COMMIT");
904
905 // check for manual tags (we have to do it here since they're loaded from filters)
906
907 foreach ($article_filters as $f) {
908 if ($f["type"] == "tag") {
909
910 $manual_tags = trim_array(explode(",", $f["param"]));
911
912 foreach ($manual_tags as $tag) {
913 if (tag_is_valid($tag)) {
914 array_push($entry_tags, $tag);
915 }
916 }
917 }
918 }
919
920 // Skip boring tags
921
922 $boring_tags = trim_array(explode(",", mb_strtolower(get_pref($link,
923 'BLACKLISTED_TAGS', $owner_uid, ''), 'utf-8')));
924
925 $filtered_tags = array();
926 $tags_to_cache = array();
927
928 if ($entry_tags && is_array($entry_tags)) {
929 foreach ($entry_tags as $tag) {
930 if (array_search($tag, $boring_tags) === false) {
931 array_push($filtered_tags, $tag);
932 }
933 }
934 }
935
936 $filtered_tags = array_unique($filtered_tags);
937
938 if ($debug_enabled) {
939 _debug("update_rss_feed: filtered article tags:");
940 print_r($filtered_tags);
941 }
942
943 // Save article tags in the database
944
945 if (count($filtered_tags) > 0) {
946
947 db_query($link, "BEGIN");
948
949 foreach ($filtered_tags as $tag) {
950
951 $tag = sanitize_tag($tag);
952 $tag = db_escape_string($tag);
953
954 if (!tag_is_valid($tag)) continue;
955
956 $result = db_query($link, "SELECT id FROM ttrss_tags
957 WHERE tag_name = '$tag' AND post_int_id = '$entry_int_id' AND
958 owner_uid = '$owner_uid' LIMIT 1");
959
960 if ($result && db_num_rows($result) == 0) {
961
962 db_query($link, "INSERT INTO ttrss_tags
963 (owner_uid,tag_name,post_int_id)
964 VALUES ('$owner_uid','$tag', '$entry_int_id')");
965 }
966
967 array_push($tags_to_cache, $tag);
968 }
969
970 /* update the cache */
971
972 $tags_to_cache = array_unique($tags_to_cache);
973
974 $tags_str = db_escape_string(join(",", $tags_to_cache));
975
976 db_query($link, "UPDATE ttrss_user_entries
977 SET tag_cache = '$tags_str' WHERE ref_id = '$entry_ref_id'
978 AND owner_uid = $owner_uid");
979
980 db_query($link, "COMMIT");
981 }
982
983 if (get_pref($link, "AUTO_ASSIGN_LABELS", $owner_uid, false)) {
984 if ($debug_enabled) {
985 _debug("update_rss_feed: auto-assigning labels...");
986 }
987
988 foreach ($labels as $label) {
989 $caption = $label["caption"];
990
991 if (preg_match("/\b$caption\b/i", "$tags_str " . strip_tags($entry_content) . " $entry_title")) {
992 if (!labels_contains_caption($article_labels, $caption)) {
993 label_add_article($link, $entry_ref_id, $caption, $owner_uid);
994 }
995 }
996 }
997 }
998
999 if ($debug_enabled) {
1000 _debug("update_rss_feed: article processed");
1001 }
1002 }
1003
1004 if (!$last_updated) {
1005 if ($debug_enabled) {
1006 _debug("update_rss_feed: new feed, catching it up...");
1007 }
1008 catchup_feed($link, $feed, false, $owner_uid);
1009 }
1010
1011 if ($debug_enabled) {
1012 _debug("purging feed...");
1013 }
1014
1015 purge_feed($link, $feed, 0, $debug_enabled);
1016
1017 db_query($link, "UPDATE ttrss_feeds
1018 SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
1019
1020 // db_query($link, "COMMIT");
1021
1022 } else {
1023
1024 $error_msg = db_escape_string(mb_substr($rss->error(), 0, 245));
1025
1026 if ($debug_enabled) {
1027 _debug("update_rss_feed: error fetching feed: $error_msg");
1028 }
1029
1030 db_query($link,
1031 "UPDATE ttrss_feeds SET last_error = '$error_msg',
1032 last_updated = NOW() WHERE id = '$feed'");
1033 }
1034
1035 unset($rss);
1036
1037 if ($debug_enabled) {
1038 _debug("update_rss_feed: done");
1039 }
1040
1041 }
1042
1043 function cache_images($html, $site_url, $debug) {
1044 $cache_dir = CACHE_DIR . "/images";
1045
1046 libxml_use_internal_errors(true);
1047
1048 $charset_hack = '<head>
1049 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
1050 </head>';
1051
1052 $doc = new DOMDocument();
1053 $doc->loadHTML($charset_hack . $html);
1054 $xpath = new DOMXPath($doc);
1055
1056 $entries = $xpath->query('(//img[@src])');
1057
1058 foreach ($entries as $entry) {
1059 if ($entry->hasAttribute('src')) {
1060 $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
1061
1062 $local_filename = CACHE_DIR . "/images/" . sha1($src) . ".png";
1063
1064 if ($debug) _debug("cache_images: downloading: $src to $local_filename");
1065
1066 if (!file_exists($local_filename)) {
1067 $file_content = fetch_file_contents($src);
1068
1069 if ($file_content && strlen($file_content) > 1024) {
1070 file_put_contents($local_filename, $file_content);
1071 }
1072 }
1073
1074 if (file_exists($local_filename)) {
1075 $entry->setAttribute('src', SELF_URL_PATH . '/image.php?url=' .
1076 base64_encode($src));
1077 }
1078 }
1079 }
1080
1081 $node = $doc->getElementsByTagName('body')->item(0);
1082
1083 return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
1084 }
1085
1086 function expire_lock_files($debug) {
1087 if ($debug) _debug("Removing old lock files...");
1088
1089 $num_deleted = 0;
1090
1091 if (is_writable(LOCK_DIRECTORY)) {
1092 $files = glob(LOCK_DIRECTORY . "/*.lock");
1093
1094 if ($files) {
1095 foreach ($files as $file) {
1096 if (!file_is_locked($file) && time() - filemtime($file) > 86400*2) {
1097 unlink($file);
1098 ++$num_deleted;
1099 }
1100 }
1101 }
1102 }
1103
1104 if ($debug) _debug("Removed $num_deleted files.");
1105 }
1106
1107 function expire_cached_files($debug) {
1108 foreach (array("simplepie", "images", "export") as $dir) {
1109 $cache_dir = CACHE_DIR . "/$dir";
1110
1111 if ($debug) _debug("Expiring $cache_dir");
1112
1113 $num_deleted = 0;
1114
1115 if (is_writable($cache_dir)) {
1116 $files = glob("$cache_dir/*");
1117
1118 if ($files) {
1119 foreach ($files as $file) {
1120 if (time() - filemtime($file) > 86400*7) {
1121 unlink($file);
1122
1123 ++$num_deleted;
1124 }
1125 }
1126 }
1127 }
1128
1129 if ($debug) _debug("Removed $num_deleted files.");
1130 }
1131 }
1132
1133 /**
1134 * Source: http://www.php.net/manual/en/function.parse-url.php#104527
1135 * Returns the url query as associative array
1136 *
1137 * @param string query
1138 * @return array params
1139 */
1140 function convertUrlQuery($query) {
1141 $queryParts = explode('&', $query);
1142
1143 $params = array();
1144
1145 foreach ($queryParts as $param) {
1146 $item = explode('=', $param);
1147 $params[$item[0]] = $item[1];
1148 }
1149
1150 return $params;
1151 }
1152
1153 function get_article_filters($filters, $title, $content, $link, $timestamp, $author, $tags) {
1154 $matches = array();
1155
1156 foreach ($filters as $filter) {
1157 $match_any_rule = $filter["match_any_rule"];
1158 $filter_match = false;
1159
1160 foreach ($filter["rules"] as $rule) {
1161 $match = false;
1162 $reg_exp = $rule["reg_exp"];
1163
1164 if (!$reg_exp)
1165 continue;
1166
1167 switch ($rule["type"]) {
1168 case "title":
1169 $match = @preg_match("/$reg_exp/i", $title);
1170 break;
1171 case "content":
1172 // we don't need to deal with multiline regexps
1173 $content = preg_replace("/[\r\n\t]/", "", $content);
1174
1175 $match = @preg_match("/$reg_exp/i", $content);
1176 break;
1177 case "both":
1178 // we don't need to deal with multiline regexps
1179 $content = preg_replace("/[\r\n\t]/", "", $content);
1180
1181 $match = (@preg_match("/$reg_exp/i", $title) || @preg_match("/$reg_exp/i", $content));
1182 break;
1183 case "link":
1184 $match = @preg_match("/$reg_exp/i", $link);
1185 break;
1186 case "author":
1187 $match = @preg_match("/$reg_exp/i", $author);
1188 break;
1189 case "tag":
1190 $tag_string = join(",", $tags);
1191 $match = @preg_match("/$reg_exp/i", $tag_string);
1192 break;
1193 }
1194
1195 if ($match_any_rule) {
1196 if ($match) {
1197 $filter_match = true;
1198 break;
1199 }
1200 } else {
1201 $filter_match = $match;
1202 if (!$match) {
1203 break;
1204 }
1205 }
1206 }
1207
1208 if ($filter_match) {
1209 foreach ($filter["actions"] AS $action) {
1210 array_push($matches, $action);
1211 }
1212 }
1213 }
1214
1215 return $matches;
1216 }
1217
1218 function find_article_filter($filters, $filter_name) {
1219 foreach ($filters as $f) {
1220 if ($f["type"] == $filter_name) {
1221 return $f;
1222 };
1223 }
1224 return false;
1225 }
1226
1227 function find_article_filters($filters, $filter_name) {
1228 $results = array();
1229
1230 foreach ($filters as $f) {
1231 if ($f["type"] == $filter_name) {
1232 array_push($results, $f);
1233 };
1234 }
1235 return $results;
1236 }
1237
1238 function calculate_article_score($filters) {
1239 $score = 0;
1240
1241 foreach ($filters as $f) {
1242 if ($f["type"] == "score") {
1243 $score += $f["param"];
1244 };
1245 }
1246 return $score;
1247 }
1248
1249 function labels_contains_caption($labels, $caption) {
1250 foreach ($labels as $label) {
1251 if ($label[1] == $caption) {
1252 return true;
1253 }
1254 }
1255
1256 return false;
1257 }
1258
1259 function assign_article_to_label_filters($link, $id, $filters, $owner_uid, $article_labels) {
1260 foreach ($filters as $f) {
1261 if ($f["type"] == "label") {
1262 if (!labels_contains_caption($article_labels, $f["param"])) {
1263 label_add_article($link, $id, $f["param"], $owner_uid);
1264 }
1265 }
1266 }
1267 }
1268
1269 function cache_content($link, $url, $login, $pass) {
1270
1271 $content = fetch_file_contents($url, $login, $pass);
1272
1273 if ($content) {
1274 $doc = new DOMDocument();
1275 @$doc->loadHTML($content);
1276 $xpath = new DOMXPath($doc);
1277
1278 $node = $doc->getElementsByTagName('body')->item(0);
1279
1280 if ($node) {
1281 $content = $doc->saveXML($node, LIBXML_NOEMPTYTAG);
1282
1283 return $content;
1284 }
1285 }
1286
1287 return "";
1288 }
1289
1290 function make_guid_from_title($title) {
1291 return preg_replace("/[ \"\',.:;]/", "-",
1292 mb_strtolower(strip_tags($title), 'utf-8'));
1293 }
1294
1295
1296 ?>
web-based news feed (RSS/Atom) reader and aggregator; see https://tt-rss.org/