init.php 17 KB

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  1. <?php
  2. class Af_RedditImgur extends Plugin {
  3. /* @var PluginHost $host */
  4. private $host;
  5. function about() {
  6. return array(1.0,
  7. "Inline images (and other content) in Reddit RSS feeds",
  8. "fox");
  9. }
  10. function flags() {
  11. return array("needs_curl" => true);
  12. }
  13. function init($host) {
  14. $this->host = $host;
  15. $host->add_hook($host::HOOK_ARTICLE_FILTER, $this);
  16. $host->add_hook($host::HOOK_PREFS_TAB, $this);
  17. }
  18. function hook_prefs_tab($args) {
  19. if ($args != "prefFeeds") return;
  20. print "<div dojoType=\"dijit.layout.AccordionPane\"
  21. title=\"<i class='material-icons'>extension</i> ".__('Reddit content settings (af_redditimgur)')."\">";
  22. $enable_readability = $this->host->get($this, "enable_readability");
  23. $enable_content_dupcheck = $this->host->get($this, "enable_content_dupcheck");
  24. if (version_compare(PHP_VERSION, '5.6.0', '<')) {
  25. print_error("Readability requires PHP version 5.6.");
  26. }
  27. print "<form dojoType='dijit.form.Form'>";
  28. print "<script type='dojo/method' event='onSubmit' args='evt'>
  29. evt.preventDefault();
  30. if (this.validate()) {
  31. console.log(dojo.objectToQuery(this.getValues()));
  32. new Ajax.Request('backend.php', {
  33. parameters: dojo.objectToQuery(this.getValues()),
  34. onComplete: function(transport) {
  35. Notify.info(transport.responseText);
  36. }
  37. });
  38. //this.reset();
  39. }
  40. </script>";
  41. print_hidden("op", "pluginhandler");
  42. print_hidden("method", "save");
  43. print_hidden("plugin", "af_redditimgur");
  44. print "<fieldset class='narrow'>";
  45. print "<label class='checkbox'>";
  46. print_checkbox("enable_readability", $enable_readability);
  47. print " " . __("Extract missing content using Readability") . "</label>";
  48. print "</fieldset>";
  49. print "<fieldset class='narrow'>";
  50. print "<label class='checkbox'>";
  51. print_checkbox("enable_content_dupcheck", $enable_content_dupcheck);
  52. print " " . __("Enable additional duplicate checking") . "</label>";
  53. print "</fieldset>";
  54. print_button("submit", __("Save"), 'class="alt-primary"');
  55. print "</form>";
  56. print "</div>";
  57. }
  58. function save() {
  59. $enable_readability = checkbox_to_sql_bool($_POST["enable_readability"]);
  60. $enable_content_dupcheck = checkbox_to_sql_bool($_POST["enable_content_dupcheck"]);
  61. $this->host->set($this, "enable_readability", $enable_readability, false);
  62. $this->host->set($this, "enable_content_dupcheck", $enable_content_dupcheck);
  63. echo __("Configuration saved");
  64. }
  65. /**
  66. * @SuppressWarnings(PHPMD.UnusedFormalParameter)
  67. */
  68. private function inline_stuff($article, &$doc, $xpath) {
  69. $entries = $xpath->query('(//a[@href]|//img[@src])');
  70. $img_entries = $xpath->query("(//img[@src])");
  71. $found = false;
  72. //$debug = 1;
  73. foreach ($entries as $entry) {
  74. if ($entry->hasAttribute("href") && strpos($entry->getAttribute("href"), "reddit.com") === FALSE) {
  75. Debug::log("processing href: " . $entry->getAttribute("href"), Debug::$LOG_VERBOSE);
  76. $matches = array();
  77. if (!$found && preg_match("/^https?:\/\/twitter.com\/(.*?)\/status\/(.*)/", $entry->getAttribute("href"), $matches)) {
  78. Debug::log("handling as twitter: " . $matches[1] . " " . $matches[2], Debug::$LOG_VERBOSE);
  79. $oembed_result = fetch_file_contents("https://publish.twitter.com/oembed?url=" . urlencode($entry->getAttribute("href")));
  80. if ($oembed_result) {
  81. $oembed_result = json_decode($oembed_result, true);
  82. if ($oembed_result && isset($oembed_result["html"])) {
  83. $tmp = new DOMDocument();
  84. if ($tmp->loadHTML('<?xml encoding="utf-8" ?>' . $oembed_result["html"])) {
  85. $p = $doc->createElement("p");
  86. $p->appendChild($doc->importNode(
  87. $tmp->getElementsByTagName("blockquote")->item(0), TRUE));
  88. $br = $doc->createElement('br');
  89. $entry->parentNode->insertBefore($p, $entry);
  90. $entry->parentNode->insertBefore($br, $entry);
  91. $found = 1;
  92. }
  93. }
  94. }
  95. }
  96. if (!$found && preg_match("/\.gfycat.com\/([a-z]+)?(\.[a-z]+)$/i", $entry->getAttribute("href"), $matches)) {
  97. $entry->setAttribute("href", "http://www.gfycat.com/".$matches[1]);
  98. }
  99. if (!$found && preg_match("/https?:\/\/(www\.)?gfycat.com\/([a-z]+)$/i", $entry->getAttribute("href"), $matches)) {
  100. Debug::log("Handling as Gfycat", Debug::$LOG_VERBOSE);
  101. $source_stream = 'https://giant.gfycat.com/' . $matches[2] . '.mp4';
  102. $poster_url = 'https://thumbs.gfycat.com/' . $matches[2] . '-mobile.jpg';
  103. $content_type = $this->get_content_type($source_stream);
  104. if (strpos($content_type, "video/") !== FALSE) {
  105. $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
  106. $found = 1;
  107. }
  108. }
  109. if (!$found && preg_match("/https?:\/\/v\.redd\.it\/(.*)$/i", $entry->getAttribute("href"), $matches)) {
  110. Debug::log("Handling as reddit inline video", Debug::$LOG_VERBOSE);
  111. $img = $img_entries->item(0);
  112. if ($img) {
  113. $poster_url = $img->getAttribute("src");
  114. } else {
  115. $poster_url = false;
  116. }
  117. // Get original article URL from v.redd.it redirects
  118. $source_article_url = $this->get_location($matches[0]);
  119. Debug::log("Resolved ".$matches[0]." to ".$source_article_url, Debug::$LOG_VERBOSE);
  120. $source_stream = false;
  121. if ($source_article_url) {
  122. $j = json_decode(fetch_file_contents($source_article_url.".json"), true);
  123. if ($j) {
  124. foreach ($j as $listing) {
  125. foreach ($listing["data"]["children"] as $child) {
  126. if ($child["data"]["url"] == $matches[0]) {
  127. try {
  128. $source_stream = $child["data"]["media"]["reddit_video"]["fallback_url"];
  129. }
  130. catch (Exception $e) {
  131. }
  132. break 2;
  133. }
  134. }
  135. }
  136. }
  137. }
  138. if (!$source_stream) {
  139. $source_stream = "https://v.redd.it/" . $matches[1] . "/DASH_600_K";
  140. }
  141. $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
  142. $found = 1;
  143. }
  144. if (!$found && preg_match("/https?:\/\/(www\.)?streamable.com\//i", $entry->getAttribute("href"))) {
  145. Debug::log("Handling as Streamable", Debug::$LOG_VERBOSE);
  146. $tmp = fetch_file_contents($entry->getAttribute("href"));
  147. if ($tmp) {
  148. $tmpdoc = new DOMDocument();
  149. if (@$tmpdoc->loadHTML($tmp)) {
  150. $tmpxpath = new DOMXPath($tmpdoc);
  151. $source_node = $tmpxpath->query("//video[contains(@class,'video-player-tag')]//source[contains(@src, '.mp4')]")->item(0);
  152. $poster_node = $tmpxpath->query("//video[contains(@class,'video-player-tag') and @poster]")->item(0);
  153. if ($source_node && $poster_node) {
  154. $source_stream = $source_node->getAttribute("src");
  155. $poster_url = $poster_node->getAttribute("poster");
  156. $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
  157. $found = 1;
  158. }
  159. }
  160. }
  161. }
  162. // imgur .gif -> .gifv
  163. if (!$found && preg_match("/i\.imgur\.com\/(.*?)\.gif$/i", $entry->getAttribute("href"))) {
  164. Debug::log("Handling as imgur gif (->gifv)", Debug::$LOG_VERBOSE);
  165. $entry->setAttribute("href",
  166. str_replace(".gif", ".gifv", $entry->getAttribute("href")));
  167. }
  168. if (!$found && preg_match("/\.(gifv|mp4)$/i", $entry->getAttribute("href"))) {
  169. Debug::log("Handling as imgur gifv", Debug::$LOG_VERBOSE);
  170. $source_stream = str_replace(".gifv", ".mp4", $entry->getAttribute("href"));
  171. if (strpos($source_stream, "imgur.com") !== FALSE)
  172. $poster_url = str_replace(".mp4", "h.jpg", $source_stream);
  173. $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
  174. $found = true;
  175. }
  176. $matches = array();
  177. if (!$found && preg_match("/youtube\.com\/v\/([\w-]+)/", $entry->getAttribute("href"), $matches) ||
  178. preg_match("/youtube\.com\/.*?[\&\?]v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
  179. preg_match("/youtube\.com\/watch\?v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
  180. preg_match("/\/\/youtu.be\/([\w-]+)/", $entry->getAttribute("href"), $matches)) {
  181. $vid_id = $matches[1];
  182. Debug::log("Handling as youtube: $vid_id", Debug::$LOG_VERBOSE);
  183. $iframe = $doc->createElement("iframe");
  184. $iframe->setAttribute("class", "youtube-player");
  185. $iframe->setAttribute("type", "text/html");
  186. $iframe->setAttribute("width", "640");
  187. $iframe->setAttribute("height", "385");
  188. $iframe->setAttribute("src", "https://www.youtube.com/embed/$vid_id");
  189. $iframe->setAttribute("allowfullscreen", "1");
  190. $iframe->setAttribute("frameborder", "0");
  191. $br = $doc->createElement('br');
  192. $entry->parentNode->insertBefore($iframe, $entry);
  193. $entry->parentNode->insertBefore($br, $entry);
  194. $found = true;
  195. }
  196. if (!$found && preg_match("/\.(jpg|jpeg|gif|png)(\?[0-9][0-9]*)?$/i", $entry->getAttribute("href")) ||
  197. mb_strpos($entry->getAttribute("href"), "i.reddituploads.com") !== FALSE ||
  198. mb_strpos($this->get_content_type($entry->getAttribute("href")), "image/") !== FALSE) {
  199. Debug::log("Handling as a picture", Debug::$LOG_VERBOSE);
  200. $img = $doc->createElement('img');
  201. $img->setAttribute("src", $entry->getAttribute("href"));
  202. $br = $doc->createElement('br');
  203. $entry->parentNode->insertBefore($img, $entry);
  204. $entry->parentNode->insertBefore($br, $entry);
  205. $found = true;
  206. }
  207. // imgur via link rel="image_src" href="..."
  208. if (!$found && preg_match("/imgur/", $entry->getAttribute("href"))) {
  209. Debug::log("handling as imgur page/whatever", Debug::$LOG_VERBOSE);
  210. $content = fetch_file_contents(["url" => $entry->getAttribute("href"),
  211. "http_accept" => "text/*"]);
  212. if ($content) {
  213. $cdoc = new DOMDocument();
  214. if (@$cdoc->loadHTML($content)) {
  215. $cxpath = new DOMXPath($cdoc);
  216. $rel_image = $cxpath->query("//link[@rel='image_src']")->item(0);
  217. if ($rel_image) {
  218. $img = $doc->createElement('img');
  219. $img->setAttribute("src", $rel_image->getAttribute("href"));
  220. $br = $doc->createElement('br');
  221. $entry->parentNode->insertBefore($img, $entry);
  222. $entry->parentNode->insertBefore($br, $entry);
  223. $found = true;
  224. }
  225. }
  226. }
  227. }
  228. // wtf is this even
  229. if (!$found && preg_match("/^https?:\/\/gyazo\.com\/([^\.\/]+$)/", $entry->getAttribute("href"), $matches)) {
  230. $img_id = $matches[1];
  231. Debug::log("handling as gyazo: $img_id", Debug::$LOG_VERBOSE);
  232. $img = $doc->createElement('img');
  233. $img->setAttribute("src", "https://i.gyazo.com/$img_id.jpg");
  234. $br = $doc->createElement('br');
  235. $entry->parentNode->insertBefore($img, $entry);
  236. $entry->parentNode->insertBefore($br, $entry);
  237. $found = true;
  238. }
  239. // let's try meta properties
  240. if (!$found) {
  241. Debug::log("looking for meta og:image", Debug::$LOG_VERBOSE);
  242. $content = fetch_file_contents(["url" => $entry->getAttribute("href"),
  243. "http_accept" => "text/*"]);
  244. if ($content) {
  245. $cdoc = new DOMDocument();
  246. if (@$cdoc->loadHTML($content)) {
  247. $cxpath = new DOMXPath($cdoc);
  248. $og_image = $cxpath->query("//meta[@property='og:image']")->item(0);
  249. $og_video = $cxpath->query("//meta[@property='og:video']")->item(0);
  250. if ($og_video) {
  251. $source_stream = $og_video->getAttribute("content");
  252. if ($source_stream) {
  253. if ($og_image) {
  254. $poster_url = $og_image->getAttribute("content");
  255. } else {
  256. $poster_url = false;
  257. }
  258. $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
  259. $found = true;
  260. }
  261. } else if ($og_image) {
  262. $og_src = $og_image->getAttribute("content");
  263. if ($og_src) {
  264. $img = $doc->createElement('img');
  265. $img->setAttribute("src", $og_src);
  266. $br = $doc->createElement('br');
  267. $entry->parentNode->insertBefore($img, $entry);
  268. $entry->parentNode->insertBefore($br, $entry);
  269. $found = true;
  270. }
  271. }
  272. }
  273. }
  274. }
  275. }
  276. // remove tiny thumbnails
  277. if ($entry->hasAttribute("src")) {
  278. if ($entry->parentNode && $entry->parentNode->parentNode) {
  279. $entry->parentNode->parentNode->removeChild($entry->parentNode);
  280. }
  281. }
  282. }
  283. return $found;
  284. }
  285. function hook_article_filter($article) {
  286. if (strpos($article["link"], "reddit.com/r/") !== FALSE) {
  287. $doc = new DOMDocument();
  288. @$doc->loadHTML($article["content"]);
  289. $xpath = new DOMXPath($doc);
  290. $content_link = $xpath->query("(//a[contains(., '[link]')])")->item(0);
  291. if ($this->host->get($this, "enable_content_dupcheck")) {
  292. if ($content_link) {
  293. $content_href = $content_link->getAttribute("href");
  294. $entry_guid = $article["guid_hashed"];
  295. $owner_uid = $article["owner_uid"];
  296. if (DB_TYPE == "pgsql") {
  297. $interval_qpart = "date_entered < NOW() - INTERVAL '1 day'";
  298. } else {
  299. $interval_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 1 DAY)";
  300. }
  301. $sth = $this->pdo->prepare("SELECT COUNT(id) AS cid
  302. FROM ttrss_entries, ttrss_user_entries WHERE
  303. ref_id = id AND
  304. $interval_qpart AND
  305. guid != ? AND
  306. owner_uid = ? AND
  307. content LIKE ?");
  308. $sth->execute([$entry_guid, $owner_uid, "%href=\"$content_href\">[link]%"]);
  309. if ($row = $sth->fetch()) {
  310. $num_found = $row['cid'];
  311. if ($num_found > 0) $article["force_catchup"] = true;
  312. }
  313. }
  314. }
  315. $found = $this->inline_stuff($article, $doc, $xpath);
  316. $node = $doc->getElementsByTagName('body')->item(0);
  317. if ($node && $found) {
  318. $article["content"] = $doc->saveHTML($node);
  319. } else if ($content_link) {
  320. $article = $this->readability($article, $content_link->getAttribute("href"), $doc, $xpath);
  321. }
  322. }
  323. return $article;
  324. }
  325. function api_version() {
  326. return 2;
  327. }
  328. private function handle_as_video($doc, $entry, $source_stream, $poster_url = false) {
  329. Debug::log("handle_as_video: $source_stream", Debug::$LOG_VERBOSE);
  330. $video = $doc->createElement('video');
  331. $video->setAttribute("autoplay", "1");
  332. $video->setAttribute("controls", "1");
  333. $video->setAttribute("loop", "1");
  334. if ($poster_url) $video->setAttribute("poster", $poster_url);
  335. $source = $doc->createElement('source');
  336. $source->setAttribute("src", $source_stream);
  337. $source->setAttribute("type", "video/mp4");
  338. $video->appendChild($source);
  339. $br = $doc->createElement('br');
  340. $entry->parentNode->insertBefore($video, $entry);
  341. $entry->parentNode->insertBefore($br, $entry);
  342. $img = $doc->createElement('img');
  343. $img->setAttribute("src",
  344. "data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D");
  345. $entry->parentNode->insertBefore($img, $entry);
  346. }
  347. function testurl() {
  348. $url = htmlspecialchars($_REQUEST["url"]);
  349. header("Content-type: text/plain");
  350. print "URL: $url\n";
  351. $doc = new DOMDocument();
  352. @$doc->loadHTML("<html><body><a href=\"$url\">[link]</a></body>");
  353. $xpath = new DOMXPath($doc);
  354. $found = $this->inline_stuff([], $doc, $xpath);
  355. print "Inline result: $found\n";
  356. if (!$found) {
  357. print "\nReadability result:\n";
  358. $article = $this->readability([], $url, $doc, $xpath);
  359. print_r($article);
  360. } else {
  361. print "\nResulting HTML:\n";
  362. print $doc->saveHTML();
  363. }
  364. }
  365. private function get_header($url, $useragent = SELF_USER_AGENT, $header) {
  366. $ret = false;
  367. if (function_exists("curl_init") && !defined("NO_CURL")) {
  368. $ch = curl_init($url);
  369. curl_setopt($ch, CURLOPT_TIMEOUT, 5);
  370. curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  371. curl_setopt($ch, CURLOPT_HEADER, true);
  372. curl_setopt($ch, CURLOPT_NOBODY, true);
  373. curl_setopt($ch, CURLOPT_FOLLOWLOCATION, !ini_get("open_basedir"));
  374. curl_setopt($ch, CURLOPT_USERAGENT, $useragent);
  375. @curl_exec($ch);
  376. $ret = curl_getinfo($ch, $header);
  377. }
  378. return $ret;
  379. }
  380. private function get_content_type($url, $useragent = SELF_USER_AGENT) {
  381. return $this->get_header($url, $useragent, CURLINFO_CONTENT_TYPE);
  382. }
  383. private function get_location($url, $useragent = SELF_USER_AGENT) {
  384. return $this->get_header($url, $useragent, CURLINFO_EFFECTIVE_URL);
  385. }
  386. /**
  387. * @SuppressWarnings(PHPMD.UnusedFormalParameter)
  388. */
  389. private function readability($article, $url, $doc, $xpath, $debug = false) {
  390. if (!defined('NO_CURL') && function_exists("curl_init") && $this->host->get($this, "enable_readability") &&
  391. mb_strlen(strip_tags($article["content"])) <= 150) {
  392. // do not try to embed posts linking back to other reddit posts
  393. // readability.php requires PHP 5.6
  394. if ($url && strpos($url, "reddit.com") === FALSE && version_compare(PHP_VERSION, '5.6.0', '>=')) {
  395. /* link may lead to a huge video file or whatever, we need to check content type before trying to
  396. parse it which p much requires curl */
  397. $useragent_compat = "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)";
  398. $content_type = $this->get_content_type($url, $useragent_compat);
  399. if ($content_type && strpos($content_type, "text/html") !== FALSE) {
  400. foreach ($this->host->get_hooks(PluginHost::HOOK_GET_FULL_TEXT) as $p) {
  401. $extracted_content = $p->hook_get_full_text($url);
  402. if ($extracted_content) {
  403. $article["content"] = $extracted_content;
  404. break;
  405. }
  406. }
  407. }
  408. }
  409. }
  410. return $article;
  411. }
  412. }