plugins/af_redditimgur/init.php

   1 <?php
   2 class Af_RedditImgur extends Plugin {
   3         private $host;
   4
   5         function about() {
   6                 return array(1.0,
   7                         "Inline images (and other content) in Reddit RSS feeds",
   8                         "fox");
   9         }
  10
  11         function flags() {
  12                 return array("needs_curl" => true);
  13         }
  14
  15         function init($host) {
  16                 $this->host = $host;
  17
  18                 $host->add_hook($host::HOOK_ARTICLE_FILTER, $this);
  19                 $host->add_hook($host::HOOK_PREFS_TAB, $this);
  20         }
  21
  22         function hook_prefs_tab($args) {
  23                 if ($args != "prefFeeds") return;
  24
  25                 print "<div dojoType=\"dijit.layout.AccordionPane\" title=\"".__('Reddit content settings (af_redditimgur)')."\">";
  26
  27                 $enable_readability = $this->host->get($this, "enable_readability");
  28                 $enable_content_dupcheck = $this->host->get($this, "enable_content_dupcheck");
  29
  30                 print "<form dojoType=\"dijit.form.Form\">";
  31
  32                 print "<script type=\"dojo/method\" event=\"onSubmit\" args=\"evt\">
  33                         evt.preventDefault();
  34                         if (this.validate()) {
  35                                 console.log(dojo.objectToQuery(this.getValues()));
  36                                 new Ajax.Request('backend.php', {
  37                                         parameters: dojo.objectToQuery(this.getValues()),
  38                                         onComplete: function(transport) {
  39                                                 notify_info(transport.responseText);
  40                                         }
  41                                 });
  42                                 //this.reset();
  43                         }
  44                         </script>";
  45
  46                 print_hidden("op", "pluginhandler");
  47                 print_hidden("method", "save");
  48                 print_hidden("plugin", "af_redditimgur");
  49
  50                 print "<p>" . __("Uses Readability (full-text-rss) implementation by <a target='_blank' href='https://bitbucket.org/fivefilters/'>FiveFilters.org</a>");
  51                 print "<p/>";
  52
  53                 print_checkbox("enable_readability", $enable_readability);
  54                 print "&nbsp;<label for=\"enable_readability\">" . __("Extract missing content using Readability") . "</label>";
  55
  56                 print "<br/>";
  57
  58                 print_checkbox("enable_content_dupcheck", $enable_content_dupcheck);
  59                 print "&nbsp;<label for=\"enable_content_dupcheck\">" . __("Enable additional duplicate checking") . "</label>";
  60                 print "<p>"; print_button("submit", __("Save"));
  61                 print "</form>";
  62
  63                 print "</div>";
  64         }
  65
  66         function save() {
  67                 $enable_readability = checkbox_to_sql_bool($_POST["enable_readability"]) == "true";
  68                 $enable_content_dupcheck = checkbox_to_sql_bool($_POST["enable_content_dupcheck"]) == "true";
  69
  70                 $this->host->set($this, "enable_readability", $enable_readability, false);
  71                 $this->host->set($this, "enable_content_dupcheck", $enable_content_dupcheck);
  72
  73                 echo __("Configuration saved");
  74         }
  75
  76         /**
  77          * @SuppressWarnings(PHPMD.UnusedFormalParameter)
  78          */
  79         private function inline_stuff($article, &$doc, $xpath, $debug = false) {
  80
  81                 $entries = $xpath->query('(//a[@href]|//img[@src])');
  82                 $img_entries = $xpath->query("(//img[@src])");
  83
  84                 $found = false;
  85
  86                 foreach ($entries as $entry) {
  87                         if ($entry->hasAttribute("href")) {
  88
  89                                 _debug("processing href: " . $entry->getAttribute("href"), $debug);
  90
  91                                 $matches = array();
  92
  93                                 if (preg_match("/^https?:\/\/twitter.com\/(.*?)\/status\/(.*)/", $entry->getAttribute("href"), $matches)) {
  94                                         _debug("handling as twitter: " . $matches[1] . " " . $matches[2], $debug);
  95
  96                                         $oembed_result = fetch_file_contents("https://publish.twitter.com/oembed?url=" . urlencode($entry->getAttribute("href")));
  97
  98                                         if ($oembed_result) {
  99                                                 $oembed_result = json_decode($oembed_result, true);
 100
 101                                                 if ($oembed_result && isset($oembed_result["html"])) {
 102
 103                                                         $tmp = new DOMDocument();
 104                                                         if ($tmp->loadHTML('<?xml encoding="utf-8" ?>' . $oembed_result["html"])) {
 105                                                                 $p = $doc->createElement("p");
 106
 107                                                                 $p->appendChild($doc->importNode(
 108                                                                         $tmp->getElementsByTagName("blockquote")->item(0), TRUE));
 109
 110                                                                 $br = $doc->createElement('br');
 111                                                                 $entry->parentNode->insertBefore($p, $entry);
 112                                                                 $entry->parentNode->insertBefore($br, $entry);
 113
 114                                                                 $found = 1;
 115                                                         }
 116                                                 }
 117                                         }
 118                                 }
 119
 120                                 if (!$found && preg_match("/\.gfycat.com\/([a-z]+)?(\.[a-z]+)$/i", $entry->getAttribute("href"), $matches)) {
 121                                         $entry->setAttribute("href", "http://www.gfycat.com/".$matches[1]);
 122                                 }
 123
 124                                 if (!$found && preg_match("/https?:\/\/(www\.)?gfycat.com\/([a-z]+)$/i", $entry->getAttribute("href"), $matches)) {
 125
 126                                         _debug("Handling as Gfycat", $debug);
 127
 128                                         $tmp = fetch_file_contents($entry->getAttribute("href"));
 129
 130                                         if ($tmp) {
 131                                                 $tmpdoc = new DOMDocument();
 132
 133                                                 if (@$tmpdoc->loadHTML($tmp)) {
 134                                                         $tmpxpath = new DOMXPath($tmpdoc);
 135
 136                                                         $source_node = $tmpxpath->query("//video[contains(@class,'share-video')]//source[contains(@src, '.mp4')]")->item(0);
 137                                                         $poster_node = $tmpxpath->query("//video[contains(@class,'share-video') and @poster]")->item(0);
 138
 139                                                         if ($source_node && $poster_node) {
 140                                                                 $source_stream = $source_node->getAttribute("src");
 141                                                                 $poster_url = $poster_node->getAttribute("poster");
 142
 143                                                                 $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 144                                                                 $found = 1;
 145                                                         }
 146                                                 }
 147                                         }
 148                                 }
 149
 150                                 if (!$found && preg_match("/https?:\/\/v\.redd\.it\/(.*)$/i", $entry->getAttribute("href"), $matches)) {
 151
 152                                         _debug("Handling as reddit inline video", $debug);
 153
 154                                         $img = $img_entries->item(0);
 155
 156                                         if ($img) {
 157                                                 $poster_url = $img->getAttribute("src");
 158                                         } else {
 159                                                 $poster_url = false;
 160                                         }
 161
 162                                         // IMPORTANT:  This assumes the article GUID is kept in "owner_uid,entry_guid" format, and
 163                                         // Reddit feed entries will keep the <id> element (so get_id returns it).
 164                                         $feeditem_id = explode(",", $article["guid"])[1];
 165                                         $source_stream = false;
 166                                         $j = json_decode(fetch_file_contents($article["link"].".json"), true);
 167
 168                                         if ($j) {
 169                                                 foreach ($j as $listing) {
 170                                                         foreach ($listing["data"]["children"] as $child) {
 171                                                                 // Found the child object corresponding to the article (e.g. same name+ID like "t3_70j63a").
 172                                                                 if ($child["data"]["name"] == $feeditem_id) {
 173                                                                         try {
 174                                                                                 $source_stream = $child["data"]["media"]["reddit_video"]["fallback_url"];
 175                                                                         }
 176                                                                         catch (Exception $e) {
 177                                                                         }
 178                                                                         break 2;
 179                                                                 }
 180                                                         }
 181                                                 }
 182                                         }
 183
 184                                         if (!$source_stream) {
 185                                                 $source_stream = "https://v.redd.it/" . $matches[1] . "/DASH_600_K";
 186                                         }
 187
 188                                         $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 189                                         $found = 1;
 190                                 }
 191
 192                                 if (!$found && preg_match("/https?:\/\/(www\.)?streamable.com\//i", $entry->getAttribute("href"))) {
 193
 194                                         _debug("Handling as Streamable", $debug);
 195
 196                                         $tmp = fetch_file_contents($entry->getAttribute("href"));
 197
 198                                         if ($tmp) {
 199                                                 $tmpdoc = new DOMDocument();
 200
 201                                                 if (@$tmpdoc->loadHTML($tmp)) {
 202                                                         $tmpxpath = new DOMXPath($tmpdoc);
 203
 204                                                         $source_node = $tmpxpath->query("//video[contains(@class,'video-player-tag')]//source[contains(@src, '.mp4')]")->item(0);
 205                                                         $poster_node = $tmpxpath->query("//video[contains(@class,'video-player-tag') and @poster]")->item(0);
 206
 207                                                         if ($source_node && $poster_node) {
 208                                                                 $source_stream = $source_node->getAttribute("src");
 209                                                                 $poster_url = $poster_node->getAttribute("poster");
 210
 211                                                                 $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 212                                                                 $found = 1;
 213                                                         }
 214                                                 }
 215                                         }
 216                                 }
 217
 218                                 // imgur .gif -> .gifv
 219                                 if (!$found && preg_match("/i\.imgur\.com\/(.*?)\.gif$/i", $entry->getAttribute("href"))) {
 220                                         _debug("Handling as imgur gif (->gifv)", $debug);
 221
 222                                         $entry->setAttribute("href",
 223                                                 str_replace(".gif", ".gifv", $entry->getAttribute("href")));
 224                                 }
 225
 226                                 if (!$found && preg_match("/\.(gifv|mp4)$/i", $entry->getAttribute("href"))) {
 227                                         _debug("Handling as imgur gifv", $debug);
 228
 229                                         $source_stream = str_replace(".gifv", ".mp4", $entry->getAttribute("href"));
 230
 231                                         if (strpos($source_stream, "imgur.com") !== FALSE)
 232                                                 $poster_url = str_replace(".mp4", "h.jpg", $source_stream);
 233
 234                                         $this->handle_as_video($doc, $entry, $source_stream, $poster_url, $debug);
 235
 236                                         $found = true;
 237                                 }
 238
 239                                 $matches = array();
 240                                 if (!$found && preg_match("/youtube\.com\/v\/([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 241                                         preg_match("/youtube\.com\/.*?[\&\?]v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 242                                         preg_match("/youtube\.com\/watch\?v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 243                                         preg_match("/\/\/youtu.be\/([\w-]+)/", $entry->getAttribute("href"), $matches)) {
 244
 245                                         $vid_id = $matches[1];
 246
 247                                         _debug("Handling as youtube: $vid_id", $debug);
 248
 249                                         $iframe = $doc->createElement("iframe");
 250                                         $iframe->setAttribute("class", "youtube-player");
 251                                         $iframe->setAttribute("type", "text/html");
 252                                         $iframe->setAttribute("width", "640");
 253                                         $iframe->setAttribute("height", "385");
 254                                         $iframe->setAttribute("src", "https://www.youtube.com/embed/$vid_id");
 255                                         $iframe->setAttribute("allowfullscreen", "1");
 256                                         $iframe->setAttribute("frameborder", "0");
 257
 258                                         $br = $doc->createElement('br');
 259                                         $entry->parentNode->insertBefore($iframe, $entry);
 260                                         $entry->parentNode->insertBefore($br, $entry);
 261
 262                                         $found = true;
 263                                 }
 264
 265                                 if (!$found && preg_match("/\.(jpg|jpeg|gif|png)(\?[0-9][0-9]*)?$/i", $entry->getAttribute("href")) ||
 266                                         mb_strpos($entry->getAttribute("href"), "i.reddituploads.com") !== FALSE ||
 267                                         mb_strpos($this->get_content_type($entry->getAttribute("href")), "image/") !== FALSE) {
 268
 269                                         _debug("Handling as a picture", $debug);
 270
 271                                         $img = $doc->createElement('img');
 272                                         $img->setAttribute("src", $entry->getAttribute("href"));
 273
 274                                         $br = $doc->createElement('br');
 275                                         $entry->parentNode->insertBefore($img, $entry);
 276                                         $entry->parentNode->insertBefore($br, $entry);
 277
 278                                         $found = true;
 279                                 }
 280
 281                                 // linked albums & pages
 282
 283                                 if (!$found && preg_match("/^https?:\/\/(m\.)?imgur.com\/([^\.\/]+$)/", $entry->getAttribute("href"), $matches) ||
 284                                         preg_match("/^https?:\/\/(m\.)?imgur.com\/(a|album|gallery)\/[^\.]+$/", $entry->getAttribute("href"), $matches)) {
 285
 286                                         _debug("Handling as an imgur page/album/gallery", $debug);
 287
 288                                         $album_content = fetch_file_contents($entry->getAttribute("href"),
 289                                                 false, false, false, false, 10);
 290
 291                                         if ($album_content) {
 292                                                 $adoc = new DOMDocument();
 293
 294                                                 if (@$adoc->loadHTML($album_content)) {
 295                                                         $axpath = new DOMXPath($adoc);
 296
 297                                                         $aentries = $axpath->query("(//div[@class='post-image']/img[@src] | //a[@class='zoom']/img[@src] | //div[@class='video-elements']/source)");
 298                                                         $urls = [];
 299
 300                                                         foreach ($aentries as $aentry) {
 301
 302                                                                 $url = $aentry->getAttribute("src");
 303
 304                                                                 if (!in_array($url, $urls)) {
 305
 306                                                                         if ($aentry->tagName == "img") {
 307
 308                                                                                 $img = $doc->createElement('img');
 309                                                                                 $img->setAttribute("src", $url);
 310                                                                                 $entry->parentNode->insertBefore($doc->createElement('br'), $entry);
 311
 312                                                                                 $br = $doc->createElement('br');
 313
 314                                                                                 $entry->parentNode->insertBefore($img, $entry);
 315                                                                                 $entry->parentNode->insertBefore($br, $entry);
 316                                                                         } else if ($aentry->tagName == "source") {
 317
 318                                                                                 if (strpos($url, "imgur.com") !== FALSE)
 319                                                                                         $poster_url = str_replace(".mp4", "h.jpg", $url);
 320                                                                                 else
 321                                                                                         $poster_url = "";
 322
 323                                                                                 $this->handle_as_video($doc, $entry, $url, $poster_url);
 324
 325                                                                         }
 326
 327                                                                         array_push($urls, $url);
 328
 329                                                                         $found = true;
 330                                                                 }
 331
 332                                                         }
 333
 334                                                         if ($debug) print_r($urls);
 335                                                 }
 336                                         }
 337                                 }
 338
 339                                 // wtf is this even
 340                                 if (!$found && preg_match("/^https?:\/\/gyazo\.com\/([^\.\/]+$)/", $entry->getAttribute("href"), $matches)) {
 341                                         $img_id = $matches[1];
 342
 343                                         _debug("handling as gyazo: $img_id", $debug);
 344
 345                                         $img = $doc->createElement('img');
 346                                         $img->setAttribute("src", "https://i.gyazo.com/$img_id.jpg");
 347
 348                                         $br = $doc->createElement('br');
 349                                         $entry->parentNode->insertBefore($img, $entry);
 350                                         $entry->parentNode->insertBefore($br, $entry);
 351
 352                                         $found = true;
 353                                 }
 354                         }
 355
 356                         // remove tiny thumbnails
 357                         if ($entry->hasAttribute("src")) {
 358                                 if ($entry->parentNode && $entry->parentNode->parentNode) {
 359                                         $entry->parentNode->parentNode->removeChild($entry->parentNode);
 360                                 }
 361                         }
 362                 }
 363
 364                 return $found;
 365         }
 366
 367         function hook_article_filter($article) {
 368
 369                 if (strpos($article["link"], "reddit.com/r/") !== FALSE) {
 370                         $doc = new DOMDocument();
 371                         @$doc->loadHTML($article["content"]);
 372                         $xpath = new DOMXPath($doc);
 373
 374                         $content_link = $xpath->query("(//a[contains(., '[link]')])")->item(0);
 375
 376                         if ($this->host->get($this, "enable_content_dupcheck")) {
 377
 378                                 if ($content_link) {
 379                                         $content_href = db_escape_string($content_link->getAttribute("href"));
 380                                         $entry_guid = db_escape_string($article["guid_hashed"]);
 381                                         $owner_uid = $article["owner_uid"];
 382
 383                                         if (DB_TYPE == "pgsql") {
 384                                                 $interval_qpart = "date_entered < NOW() - INTERVAL '1 day'";
 385                                         } else {
 386                                                 $interval_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 1 DAY)";
 387                                         }
 388
 389                                         $result = db_query("SELECT COUNT(id) AS cid
 390                                                 FROM ttrss_entries, ttrss_user_entries WHERE
 391                                                         ref_id = id AND
 392                                                         $interval_qpart AND
 393                                                         guid != '$entry_guid' AND
 394                                                         owner_uid = '$owner_uid' AND
 395                                                         content LIKE '%href=\"$content_href\">[link]%'");
 396
 397                                         if ($result) {
 398                                                 $num_found = db_fetch_result($result, 0, "cid");
 399
 400                                                 if ($num_found > 0) $article["force_catchup"] = true;
 401                                         }
 402                                 }
 403                         }
 404
 405                         $found = $this->inline_stuff($article, $doc, $xpath);
 406
 407                         $node = $doc->getElementsByTagName('body')->item(0);
 408
 409                         if ($node && $found) {
 410                                 $article["content"] = $doc->saveHTML($node);
 411                         } else if ($content_link) {
 412                                 $article = $this->readability($article, $content_link->getAttribute("href"), $doc, $xpath);
 413                         }
 414                 }
 415
 416                 return $article;
 417         }
 418
 419         function api_version() {
 420                 return 2;
 421         }
 422
 423         private function handle_as_video($doc, $entry, $source_stream, $poster_url = false, $debug = false) {
 424
 425                 _debug("handle_as_video: $source_stream", $debug);
 426
 427                 $video = $doc->createElement('video');
 428                 $video->setAttribute("autoplay", "1");
 429                 $video->setAttribute("controls", "1");
 430                 $video->setAttribute("loop", "1");
 431
 432                 if ($poster_url) $video->setAttribute("poster", $poster_url);
 433
 434                 $source = $doc->createElement('source');
 435                 $source->setAttribute("src", $source_stream);
 436                 $source->setAttribute("type", "video/mp4");
 437
 438                 $video->appendChild($source);
 439
 440                 $br = $doc->createElement('br');
 441                 $entry->parentNode->insertBefore($video, $entry);
 442                 $entry->parentNode->insertBefore($br, $entry);
 443
 444                 $img = $doc->createElement('img');
 445                 $img->setAttribute("src",
 446                         "data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D");
 447
 448                 $entry->parentNode->insertBefore($img, $entry);
 449         }
 450
 451         function testurl() {
 452                 $url = htmlspecialchars($_REQUEST["url"]);
 453
 454                 header("Content-type: text/plain");
 455
 456                 print "URL: $url\n";
 457
 458                 $doc = new DOMDocument();
 459                 @$doc->loadHTML("<html><body><a href=\"$url\">[link]</a></body>");
 460                 $xpath = new DOMXPath($doc);
 461
 462                 $found = $this->inline_stuff([], $doc, $xpath, true);
 463
 464                 print "Inline result: $found\n";
 465
 466                 if (!$found) {
 467                         print "\nReadability result:\n";
 468
 469                         $article = $this->readability([], $url, $doc, $xpath, true);
 470
 471                         print_r($article);
 472                 } else {
 473                         print "\nResulting HTML:\n";
 474
 475                         print $doc->saveHTML();
 476                 }
 477         }
 478
 479         private function get_content_type($url, $useragent = SELF_USER_AGENT) {
 480                 $content_type = false;
 481
 482                 if (function_exists("curl_init") && !defined("NO_CURL")) {
 483                         $ch = curl_init($url);
 484                         curl_setopt($ch, CURLOPT_TIMEOUT, 5);
 485                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 486                         curl_setopt($ch, CURLOPT_HEADER, true);
 487                         curl_setopt($ch, CURLOPT_NOBODY, true);
 488                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, !ini_get("open_basedir"));
 489                         curl_setopt($ch, CURLOPT_USERAGENT, $useragent);
 490
 491                         @curl_exec($ch);
 492                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 493                 }
 494
 495                 return $content_type;
 496         }
 497
 498         /**
 499          * @SuppressWarnings(PHPMD.UnusedFormalParameter)
 500          */
 501         private function readability($article, $url, $doc, $xpath, $debug = false) {
 502
 503                 if (!defined('NO_CURL') && function_exists("curl_init") && $this->host->get($this, "enable_readability") &&
 504                         mb_strlen(strip_tags($article["content"])) <= 150) {
 505
 506                         if (!class_exists("Readability")) require_once(dirname(dirname(__DIR__)). "/lib/readability/Readability.php");
 507
 508                         if ($url &&
 509                                 strpos($url, "twitter.com") === FALSE &&
 510                                 strpos($url, "youtube.com") === FALSE &&
 511                                 strpos($url, "reddit.com") === FALSE) {
 512
 513                                 /* link may lead to a huge video file or whatever, we need to check content type before trying to
 514                                 parse it which p much requires curl */
 515
 516                                 $useragent_compat = "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)";
 517
 518                                 $content_type = $this->get_content_type($url, $useragent_compat);
 519
 520                                 if ($content_type && strpos($content_type, "text/html") !== FALSE) {
 521
 522                                         $tmp = fetch_file_contents(array("url" => $url,
 523                                                 "useragent" => $useragent_compat));
 524
 525                                         if ($debug) _debug("tmplen: " . mb_strlen($tmp));
 526
 527                                         if ($tmp && mb_strlen($tmp) < 1024 * 500) {
 528
 529                                                 $r = new Readability($tmp, $url);
 530
 531                                                 if ($r->init()) {
 532
 533                                                         $tmpxpath = new DOMXPath($r->dom);
 534
 535                                                         $entries = $tmpxpath->query('(//a[@href]|//img[@src])');
 536
 537                                                         foreach ($entries as $entry) {
 538                                                                 if ($entry->hasAttribute("href")) {
 539                                                                         $entry->setAttribute("href",
 540                                                                                 rewrite_relative_url($url, $entry->getAttribute("href")));
 541
 542                                                                 }
 543
 544                                                                 if ($entry->hasAttribute("src")) {
 545                                                                         $entry->setAttribute("src",
 546                                                                                 rewrite_relative_url($url, $entry->getAttribute("src")));
 547
 548                                                                 }
 549
 550                                                         }
 551
 552                                                         $article["content"] = $r->articleContent->innerHTML . "<hr/>" . $article["content"];
 553                                                 }
 554                                         }
 555                                 }
 556                         }
 557                 }
 558
 559                 return $article;
 560         }
 561 }