init.php 17 KB

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  1. <?php
  2. use andreskrey\Readability\Readability;
  3. use andreskrey\Readability\Configuration;
  4. class Af_RedditImgur extends Plugin {
  5. /* @var PluginHost $host */
  6. private $host;
  7. function about() {
  8. return array(1.0,
  9. "Inline images (and other content) in Reddit RSS feeds",
  10. "fox");
  11. }
  12. function flags() {
  13. return array("needs_curl" => true);
  14. }
  15. function init($host) {
  16. $this->host = $host;
  17. $host->add_hook($host::HOOK_ARTICLE_FILTER, $this);
  18. $host->add_hook($host::HOOK_PREFS_TAB, $this);
  19. }
  20. function hook_prefs_tab($args) {
  21. if ($args != "prefFeeds") return;
  22. print "<div dojoType=\"dijit.layout.AccordionPane\" title=\"".__('Reddit content settings (af_redditimgur)')."\">";
  23. $enable_readability = $this->host->get($this, "enable_readability");
  24. $enable_content_dupcheck = $this->host->get($this, "enable_content_dupcheck");
  25. if (version_compare(PHP_VERSION, '5.6.0', '<')) {
  26. print_error("Readability requires PHP version 5.6.");
  27. }
  28. print "<form dojoType=\"dijit.form.Form\">";
  29. print "<script type=\"dojo/method\" event=\"onSubmit\" args=\"evt\">
  30. evt.preventDefault();
  31. if (this.validate()) {
  32. console.log(dojo.objectToQuery(this.getValues()));
  33. new Ajax.Request('backend.php', {
  34. parameters: dojo.objectToQuery(this.getValues()),
  35. onComplete: function(transport) {
  36. Notify.info(transport.responseText);
  37. }
  38. });
  39. //this.reset();
  40. }
  41. </script>";
  42. print_hidden("op", "pluginhandler");
  43. print_hidden("method", "save");
  44. print_hidden("plugin", "af_redditimgur");
  45. print_checkbox("enable_readability", $enable_readability);
  46. print "&nbsp;<label for=\"enable_readability\">" . __("Extract missing content using Readability") . "</label>";
  47. print "<br/>";
  48. print_checkbox("enable_content_dupcheck", $enable_content_dupcheck);
  49. print "&nbsp;<label for=\"enable_content_dupcheck\">" . __("Enable additional duplicate checking") . "</label>";
  50. print "<p>"; print_button("submit", __("Save"));
  51. print "</form>";
  52. print "</div>";
  53. }
  54. function save() {
  55. $enable_readability = checkbox_to_sql_bool($_POST["enable_readability"]);
  56. $enable_content_dupcheck = checkbox_to_sql_bool($_POST["enable_content_dupcheck"]);
  57. $this->host->set($this, "enable_readability", $enable_readability, false);
  58. $this->host->set($this, "enable_content_dupcheck", $enable_content_dupcheck);
  59. echo __("Configuration saved");
  60. }
  61. /**
  62. * @SuppressWarnings(PHPMD.UnusedFormalParameter)
  63. */
  64. private function inline_stuff($article, &$doc, $xpath) {
  65. $entries = $xpath->query('(//a[@href]|//img[@src])');
  66. $img_entries = $xpath->query("(//img[@src])");
  67. $found = false;
  68. //$debug = 1;
  69. foreach ($entries as $entry) {
  70. if ($entry->hasAttribute("href") && strpos($entry->getAttribute("href"), "reddit.com") === FALSE) {
  71. Debug::log("processing href: " . $entry->getAttribute("href"), Debug::$LOG_VERBOSE);
  72. $matches = array();
  73. if (!$found && preg_match("/^https?:\/\/twitter.com\/(.*?)\/status\/(.*)/", $entry->getAttribute("href"), $matches)) {
  74. Debug::log("handling as twitter: " . $matches[1] . " " . $matches[2], Debug::$LOG_VERBOSE);
  75. $oembed_result = fetch_file_contents("https://publish.twitter.com/oembed?url=" . urlencode($entry->getAttribute("href")));
  76. if ($oembed_result) {
  77. $oembed_result = json_decode($oembed_result, true);
  78. if ($oembed_result && isset($oembed_result["html"])) {
  79. $tmp = new DOMDocument();
  80. if ($tmp->loadHTML('<?xml encoding="utf-8" ?>' . $oembed_result["html"])) {
  81. $p = $doc->createElement("p");
  82. $p->appendChild($doc->importNode(
  83. $tmp->getElementsByTagName("blockquote")->item(0), TRUE));
  84. $br = $doc->createElement('br');
  85. $entry->parentNode->insertBefore($p, $entry);
  86. $entry->parentNode->insertBefore($br, $entry);
  87. $found = 1;
  88. }
  89. }
  90. }
  91. }
  92. if (!$found && preg_match("/\.gfycat.com\/([a-z]+)?(\.[a-z]+)$/i", $entry->getAttribute("href"), $matches)) {
  93. $entry->setAttribute("href", "http://www.gfycat.com/".$matches[1]);
  94. }
  95. if (!$found && preg_match("/https?:\/\/(www\.)?gfycat.com\/([a-z]+)$/i", $entry->getAttribute("href"), $matches)) {
  96. Debug::log("Handling as Gfycat", Debug::$LOG_VERBOSE);
  97. $source_stream = 'https://giant.gfycat.com/' . $matches[2] . '.mp4';
  98. $poster_url = 'https://thumbs.gfycat.com/' . $matches[2] . '-mobile.jpg';
  99. $content_type = $this->get_content_type($source_stream);
  100. if (strpos($content_type, "video/") !== FALSE) {
  101. $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
  102. $found = 1;
  103. }
  104. }
  105. if (!$found && preg_match("/https?:\/\/v\.redd\.it\/(.*)$/i", $entry->getAttribute("href"), $matches)) {
  106. Debug::log("Handling as reddit inline video", Debug::$LOG_VERBOSE);
  107. $img = $img_entries->item(0);
  108. if ($img) {
  109. $poster_url = $img->getAttribute("src");
  110. } else {
  111. $poster_url = false;
  112. }
  113. // Get original article URL from v.redd.it redirects
  114. $source_article_url = $this->get_location($matches[0]);
  115. Debug::log("Resolved ".$matches[0]." to ".$source_article_url, Debug::$LOG_VERBOSE);
  116. $source_stream = false;
  117. if ($source_article_url) {
  118. $j = json_decode(fetch_file_contents($source_article_url.".json"), true);
  119. if ($j) {
  120. foreach ($j as $listing) {
  121. foreach ($listing["data"]["children"] as $child) {
  122. if ($child["data"]["url"] == $matches[0]) {
  123. try {
  124. $source_stream = $child["data"]["media"]["reddit_video"]["fallback_url"];
  125. }
  126. catch (Exception $e) {
  127. }
  128. break 2;
  129. }
  130. }
  131. }
  132. }
  133. }
  134. if (!$source_stream) {
  135. $source_stream = "https://v.redd.it/" . $matches[1] . "/DASH_600_K";
  136. }
  137. $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
  138. $found = 1;
  139. }
  140. if (!$found && preg_match("/https?:\/\/(www\.)?streamable.com\//i", $entry->getAttribute("href"))) {
  141. Debug::log("Handling as Streamable", Debug::$LOG_VERBOSE);
  142. $tmp = fetch_file_contents($entry->getAttribute("href"));
  143. if ($tmp) {
  144. $tmpdoc = new DOMDocument();
  145. if (@$tmpdoc->loadHTML($tmp)) {
  146. $tmpxpath = new DOMXPath($tmpdoc);
  147. $source_node = $tmpxpath->query("//video[contains(@class,'video-player-tag')]//source[contains(@src, '.mp4')]")->item(0);
  148. $poster_node = $tmpxpath->query("//video[contains(@class,'video-player-tag') and @poster]")->item(0);
  149. if ($source_node && $poster_node) {
  150. $source_stream = $source_node->getAttribute("src");
  151. $poster_url = $poster_node->getAttribute("poster");
  152. $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
  153. $found = 1;
  154. }
  155. }
  156. }
  157. }
  158. // imgur .gif -> .gifv
  159. if (!$found && preg_match("/i\.imgur\.com\/(.*?)\.gif$/i", $entry->getAttribute("href"))) {
  160. Debug::log("Handling as imgur gif (->gifv)", Debug::$LOG_VERBOSE);
  161. $entry->setAttribute("href",
  162. str_replace(".gif", ".gifv", $entry->getAttribute("href")));
  163. }
  164. if (!$found && preg_match("/\.(gifv|mp4)$/i", $entry->getAttribute("href"))) {
  165. Debug::log("Handling as imgur gifv", Debug::$LOG_VERBOSE);
  166. $source_stream = str_replace(".gifv", ".mp4", $entry->getAttribute("href"));
  167. if (strpos($source_stream, "imgur.com") !== FALSE)
  168. $poster_url = str_replace(".mp4", "h.jpg", $source_stream);
  169. $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
  170. $found = true;
  171. }
  172. $matches = array();
  173. if (!$found && preg_match("/youtube\.com\/v\/([\w-]+)/", $entry->getAttribute("href"), $matches) ||
  174. preg_match("/youtube\.com\/.*?[\&\?]v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
  175. preg_match("/youtube\.com\/watch\?v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
  176. preg_match("/\/\/youtu.be\/([\w-]+)/", $entry->getAttribute("href"), $matches)) {
  177. $vid_id = $matches[1];
  178. Debug::log("Handling as youtube: $vid_id", Debug::$LOG_VERBOSE);
  179. $iframe = $doc->createElement("iframe");
  180. $iframe->setAttribute("class", "youtube-player");
  181. $iframe->setAttribute("type", "text/html");
  182. $iframe->setAttribute("width", "640");
  183. $iframe->setAttribute("height", "385");
  184. $iframe->setAttribute("src", "https://www.youtube.com/embed/$vid_id");
  185. $iframe->setAttribute("allowfullscreen", "1");
  186. $iframe->setAttribute("frameborder", "0");
  187. $br = $doc->createElement('br');
  188. $entry->parentNode->insertBefore($iframe, $entry);
  189. $entry->parentNode->insertBefore($br, $entry);
  190. $found = true;
  191. }
  192. if (!$found && preg_match("/\.(jpg|jpeg|gif|png)(\?[0-9][0-9]*)?$/i", $entry->getAttribute("href")) ||
  193. mb_strpos($entry->getAttribute("href"), "i.reddituploads.com") !== FALSE ||
  194. mb_strpos($this->get_content_type($entry->getAttribute("href")), "image/") !== FALSE) {
  195. Debug::log("Handling as a picture", Debug::$LOG_VERBOSE);
  196. $img = $doc->createElement('img');
  197. $img->setAttribute("src", $entry->getAttribute("href"));
  198. $br = $doc->createElement('br');
  199. $entry->parentNode->insertBefore($img, $entry);
  200. $entry->parentNode->insertBefore($br, $entry);
  201. $found = true;
  202. }
  203. // wtf is this even
  204. if (!$found && preg_match("/^https?:\/\/gyazo\.com\/([^\.\/]+$)/", $entry->getAttribute("href"), $matches)) {
  205. $img_id = $matches[1];
  206. Debug::log("handling as gyazo: $img_id", Debug::$LOG_VERBOSE);
  207. $img = $doc->createElement('img');
  208. $img->setAttribute("src", "https://i.gyazo.com/$img_id.jpg");
  209. $br = $doc->createElement('br');
  210. $entry->parentNode->insertBefore($img, $entry);
  211. $entry->parentNode->insertBefore($br, $entry);
  212. $found = true;
  213. }
  214. // let's try meta properties
  215. if (!$found) {
  216. Debug::log("looking for meta og:image", Debug::$LOG_VERBOSE);
  217. $content = fetch_file_contents(["url" => $entry->getAttribute("href"),
  218. "http_accept" => "text/*"]);
  219. if ($content) {
  220. $cdoc = new DOMDocument();
  221. if (@$cdoc->loadHTML($content)) {
  222. $cxpath = new DOMXPath($cdoc);
  223. $og_image = $cxpath->query("//meta[@property='og:image']")->item(0);
  224. $og_video = $cxpath->query("//meta[@property='og:video']")->item(0);
  225. if ($og_video) {
  226. $source_stream = $og_video->getAttribute("content");
  227. if ($source_stream) {
  228. if ($og_image) {
  229. $poster_url = $og_image->getAttribute("content");
  230. } else {
  231. $poster_url = false;
  232. }
  233. $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
  234. $found = true;
  235. }
  236. } else if ($og_image) {
  237. $og_src = $og_image->getAttribute("content");
  238. if ($og_src) {
  239. $img = $doc->createElement('img');
  240. $img->setAttribute("src", $og_src);
  241. $br = $doc->createElement('br');
  242. $entry->parentNode->insertBefore($img, $entry);
  243. $entry->parentNode->insertBefore($br, $entry);
  244. $found = true;
  245. }
  246. }
  247. }
  248. }
  249. }
  250. }
  251. // remove tiny thumbnails
  252. if ($entry->hasAttribute("src")) {
  253. if ($entry->parentNode && $entry->parentNode->parentNode) {
  254. $entry->parentNode->parentNode->removeChild($entry->parentNode);
  255. }
  256. }
  257. }
  258. return $found;
  259. }
  260. function hook_article_filter($article) {
  261. if (strpos($article["link"], "reddit.com/r/") !== FALSE) {
  262. $doc = new DOMDocument();
  263. @$doc->loadHTML($article["content"]);
  264. $xpath = new DOMXPath($doc);
  265. $content_link = $xpath->query("(//a[contains(., '[link]')])")->item(0);
  266. if ($this->host->get($this, "enable_content_dupcheck")) {
  267. if ($content_link) {
  268. $content_href = $content_link->getAttribute("href");
  269. $entry_guid = $article["guid_hashed"];
  270. $owner_uid = $article["owner_uid"];
  271. if (DB_TYPE == "pgsql") {
  272. $interval_qpart = "date_entered < NOW() - INTERVAL '1 day'";
  273. } else {
  274. $interval_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 1 DAY)";
  275. }
  276. $sth = $this->pdo->prepare("SELECT COUNT(id) AS cid
  277. FROM ttrss_entries, ttrss_user_entries WHERE
  278. ref_id = id AND
  279. $interval_qpart AND
  280. guid != ? AND
  281. owner_uid = ? AND
  282. content LIKE ?");
  283. $sth->execute([$entry_guid, $owner_uid, "%href=\"$content_href\">[link]%"]);
  284. if ($row = $sth->fetch()) {
  285. $num_found = $row['cid'];
  286. if ($num_found > 0) $article["force_catchup"] = true;
  287. }
  288. }
  289. }
  290. $found = $this->inline_stuff($article, $doc, $xpath);
  291. $node = $doc->getElementsByTagName('body')->item(0);
  292. if ($node && $found) {
  293. $article["content"] = $doc->saveHTML($node);
  294. } else if ($content_link) {
  295. $article = $this->readability($article, $content_link->getAttribute("href"), $doc, $xpath);
  296. }
  297. }
  298. return $article;
  299. }
  300. function api_version() {
  301. return 2;
  302. }
  303. private function handle_as_video($doc, $entry, $source_stream, $poster_url = false) {
  304. Debug::log("handle_as_video: $source_stream", Debug::$LOG_VERBOSE);
  305. $video = $doc->createElement('video');
  306. $video->setAttribute("autoplay", "1");
  307. $video->setAttribute("controls", "1");
  308. $video->setAttribute("loop", "1");
  309. if ($poster_url) $video->setAttribute("poster", $poster_url);
  310. $source = $doc->createElement('source');
  311. $source->setAttribute("src", $source_stream);
  312. $source->setAttribute("type", "video/mp4");
  313. $video->appendChild($source);
  314. $br = $doc->createElement('br');
  315. $entry->parentNode->insertBefore($video, $entry);
  316. $entry->parentNode->insertBefore($br, $entry);
  317. $img = $doc->createElement('img');
  318. $img->setAttribute("src",
  319. "data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D");
  320. $entry->parentNode->insertBefore($img, $entry);
  321. }
  322. function testurl() {
  323. $url = htmlspecialchars($_REQUEST["url"]);
  324. header("Content-type: text/plain");
  325. print "URL: $url\n";
  326. $doc = new DOMDocument();
  327. @$doc->loadHTML("<html><body><a href=\"$url\">[link]</a></body>");
  328. $xpath = new DOMXPath($doc);
  329. $found = $this->inline_stuff([], $doc, $xpath);
  330. print "Inline result: $found\n";
  331. if (!$found) {
  332. print "\nReadability result:\n";
  333. $article = $this->readability([], $url, $doc, $xpath);
  334. print_r($article);
  335. } else {
  336. print "\nResulting HTML:\n";
  337. print $doc->saveHTML();
  338. }
  339. }
  340. private function get_header($url, $useragent = SELF_USER_AGENT, $header) {
  341. $ret = false;
  342. if (function_exists("curl_init") && !defined("NO_CURL")) {
  343. $ch = curl_init($url);
  344. curl_setopt($ch, CURLOPT_TIMEOUT, 5);
  345. curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  346. curl_setopt($ch, CURLOPT_HEADER, true);
  347. curl_setopt($ch, CURLOPT_NOBODY, true);
  348. curl_setopt($ch, CURLOPT_FOLLOWLOCATION, !ini_get("open_basedir"));
  349. curl_setopt($ch, CURLOPT_USERAGENT, $useragent);
  350. @curl_exec($ch);
  351. $ret = curl_getinfo($ch, $header);
  352. }
  353. return $ret;
  354. }
  355. private function get_content_type($url, $useragent = SELF_USER_AGENT) {
  356. return $this->get_header($url, $useragent, CURLINFO_CONTENT_TYPE);
  357. }
  358. private function get_location($url, $useragent = SELF_USER_AGENT) {
  359. return $this->get_header($url, $useragent, CURLINFO_EFFECTIVE_URL);
  360. }
  361. /**
  362. * @SuppressWarnings(PHPMD.UnusedFormalParameter)
  363. */
  364. private function readability($article, $url, $doc, $xpath, $debug = false) {
  365. if (!defined('NO_CURL') && function_exists("curl_init") && $this->host->get($this, "enable_readability") &&
  366. mb_strlen(strip_tags($article["content"])) <= 150) {
  367. // do not try to embed posts linking back to other reddit posts
  368. // readability.php requires PHP 5.6
  369. if ($url && strpos($url, "reddit.com") === FALSE && version_compare(PHP_VERSION, '5.6.0', '>=')) {
  370. /* link may lead to a huge video file or whatever, we need to check content type before trying to
  371. parse it which p much requires curl */
  372. $useragent_compat = "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)";
  373. $content_type = $this->get_content_type($url, $useragent_compat);
  374. if ($content_type && strpos($content_type, "text/html") !== FALSE) {
  375. $tmp = fetch_file_contents(["url" => $url,
  376. "useragent" => $useragent_compat,
  377. "http_accept" => "text/html"]);
  378. Debug::log("tmplen: " . mb_strlen($tmp), Debug::$LOG_VERBOSE);
  379. if ($tmp && mb_strlen($tmp) < 1024 * 500) {
  380. $r = new Readability(new Configuration());
  381. try {
  382. if ($r->parse($tmp)) {
  383. $tmpxpath = new DOMXPath($r->getDOMDocument());
  384. $entries = $tmpxpath->query('(//a[@href]|//img[@src])');
  385. foreach ($entries as $entry) {
  386. if ($entry->hasAttribute("href")) {
  387. $entry->setAttribute("href",
  388. rewrite_relative_url($url, $entry->getAttribute("href")));
  389. }
  390. if ($entry->hasAttribute("src")) {
  391. $entry->setAttribute("src",
  392. rewrite_relative_url($url, $entry->getAttribute("src")));
  393. }
  394. }
  395. $article["content"] = $r->getContent() . "<hr/>" . $article["content"];
  396. }
  397. } catch (Exception $e) {
  398. //
  399. }
  400. }
  401. }
  402. }
  403. }
  404. return $article;
  405. }
  406. }