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"]);
  68                 $enable_content_dupcheck = checkbox_to_sql_bool($_POST["enable_content_dupcheck"]);
  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                                         // Get original article URL from v.redd.it redirects
 163                                         $source_article_url = $this->get_location($matches[0]);
 164                                         _debug("Resolved ".$matches[0]." to ".$source_article_url, $debug);
 165
 166                                         $source_stream = false;
 167
 168                                         if ($source_article_url) {
 169                                                 $j = json_decode(fetch_file_contents($source_article_url.".json"), true);
 170
 171                                                 if ($j) {
 172                                                         foreach ($j as $listing) {
 173                                                                 foreach ($listing["data"]["children"] as $child) {
 174                                                                         if ($child["data"]["url"] == $matches[0]) {
 175                                                                                 try {
 176                                                                                         $source_stream = $child["data"]["media"]["reddit_video"]["fallback_url"];
 177                                                                                 }
 178                                                                                 catch (Exception $e) {
 179                                                                                 }
 180                                                                                 break 2;
 181                                                                         }
 182                                                                 }
 183                                                         }
 184                                                 }
 185                                         }
 186
 187                                         if (!$source_stream) {
 188                                                 $source_stream = "https://v.redd.it/" . $matches[1] . "/DASH_600_K";
 189                                         }
 190
 191                                         $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 192                                         $found = 1;
 193                                 }
 194
 195                                 if (!$found && preg_match("/https?:\/\/(www\.)?streamable.com\//i", $entry->getAttribute("href"))) {
 196
 197                                         _debug("Handling as Streamable", $debug);
 198
 199                                         $tmp = fetch_file_contents($entry->getAttribute("href"));
 200
 201                                         if ($tmp) {
 202                                                 $tmpdoc = new DOMDocument();
 203
 204                                                 if (@$tmpdoc->loadHTML($tmp)) {
 205                                                         $tmpxpath = new DOMXPath($tmpdoc);
 206
 207                                                         $source_node = $tmpxpath->query("//video[contains(@class,'video-player-tag')]//source[contains(@src, '.mp4')]")->item(0);
 208                                                         $poster_node = $tmpxpath->query("//video[contains(@class,'video-player-tag') and @poster]")->item(0);
 209
 210                                                         if ($source_node && $poster_node) {
 211                                                                 $source_stream = $source_node->getAttribute("src");
 212                                                                 $poster_url = $poster_node->getAttribute("poster");
 213
 214                                                                 $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 215                                                                 $found = 1;
 216                                                         }
 217                                                 }
 218                                         }
 219                                 }
 220
 221                                 // imgur .gif -> .gifv
 222                                 if (!$found && preg_match("/i\.imgur\.com\/(.*?)\.gif$/i", $entry->getAttribute("href"))) {
 223                                         _debug("Handling as imgur gif (->gifv)", $debug);
 224
 225                                         $entry->setAttribute("href",
 226                                                 str_replace(".gif", ".gifv", $entry->getAttribute("href")));
 227                                 }
 228
 229                                 if (!$found && preg_match("/\.(gifv|mp4)$/i", $entry->getAttribute("href"))) {
 230                                         _debug("Handling as imgur gifv", $debug);
 231
 232                                         $source_stream = str_replace(".gifv", ".mp4", $entry->getAttribute("href"));
 233
 234                                         if (strpos($source_stream, "imgur.com") !== FALSE)
 235                                                 $poster_url = str_replace(".mp4", "h.jpg", $source_stream);
 236
 237                                         $this->handle_as_video($doc, $entry, $source_stream, $poster_url, $debug);
 238
 239                                         $found = true;
 240                                 }
 241
 242                                 $matches = array();
 243                                 if (!$found && preg_match("/youtube\.com\/v\/([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 244                                         preg_match("/youtube\.com\/.*?[\&\?]v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 245                                         preg_match("/youtube\.com\/watch\?v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 246                                         preg_match("/\/\/youtu.be\/([\w-]+)/", $entry->getAttribute("href"), $matches)) {
 247
 248                                         $vid_id = $matches[1];
 249
 250                                         _debug("Handling as youtube: $vid_id", $debug);
 251
 252                                         $iframe = $doc->createElement("iframe");
 253                                         $iframe->setAttribute("class", "youtube-player");
 254                                         $iframe->setAttribute("type", "text/html");
 255                                         $iframe->setAttribute("width", "640");
 256                                         $iframe->setAttribute("height", "385");
 257                                         $iframe->setAttribute("src", "https://www.youtube.com/embed/$vid_id");
 258                                         $iframe->setAttribute("allowfullscreen", "1");
 259                                         $iframe->setAttribute("frameborder", "0");
 260
 261                                         $br = $doc->createElement('br');
 262                                         $entry->parentNode->insertBefore($iframe, $entry);
 263                                         $entry->parentNode->insertBefore($br, $entry);
 264
 265                                         $found = true;
 266                                 }
 267
 268                                 if (!$found && preg_match("/\.(jpg|jpeg|gif|png)(\?[0-9][0-9]*)?$/i", $entry->getAttribute("href")) ||
 269                                         mb_strpos($entry->getAttribute("href"), "i.reddituploads.com") !== FALSE ||
 270                                         mb_strpos($this->get_content_type($entry->getAttribute("href")), "image/") !== FALSE) {
 271
 272                                         _debug("Handling as a picture", $debug);
 273
 274                                         $img = $doc->createElement('img');
 275                                         $img->setAttribute("src", $entry->getAttribute("href"));
 276
 277                                         $br = $doc->createElement('br');
 278                                         $entry->parentNode->insertBefore($img, $entry);
 279                                         $entry->parentNode->insertBefore($br, $entry);
 280
 281                                         $found = true;
 282                                 }
 283
 284                                 // linked albums & pages
 285
 286                                 if (!$found && preg_match("/^https?:\/\/(m\.)?imgur.com\/([^\.\/]+$)/", $entry->getAttribute("href"), $matches) ||
 287                                         preg_match("/^https?:\/\/(m\.)?imgur.com\/(a|album|gallery)\/[^\.]+$/", $entry->getAttribute("href"), $matches)) {
 288
 289                                         _debug("Handling as an imgur page/album/gallery", $debug);
 290
 291                                         $album_content = fetch_file_contents($entry->getAttribute("href"),
 292                                                 false, false, false, false, 10);
 293
 294                                         if ($album_content) {
 295                                                 $adoc = new DOMDocument();
 296
 297                                                 if (@$adoc->loadHTML($album_content)) {
 298                                                         $axpath = new DOMXPath($adoc);
 299
 300                                                         $aentries = $axpath->query("(//div[@class='post-image']/img[@src] | //a[@class='zoom']/img[@src] | //div[@class='video-elements']/source)");
 301                                                         $urls = [];
 302
 303                                                         foreach ($aentries as $aentry) {
 304
 305                                                                 $url = $aentry->getAttribute("src");
 306
 307                                                                 if (!in_array($url, $urls)) {
 308
 309                                                                         if ($aentry->tagName == "img") {
 310
 311                                                                                 $img = $doc->createElement('img');
 312                                                                                 $img->setAttribute("src", $url);
 313                                                                                 $entry->parentNode->insertBefore($doc->createElement('br'), $entry);
 314
 315                                                                                 $br = $doc->createElement('br');
 316
 317                                                                                 $entry->parentNode->insertBefore($img, $entry);
 318                                                                                 $entry->parentNode->insertBefore($br, $entry);
 319                                                                         } else if ($aentry->tagName == "source") {
 320
 321                                                                                 if (strpos($url, "imgur.com") !== FALSE)
 322                                                                                         $poster_url = str_replace(".mp4", "h.jpg", $url);
 323                                                                                 else
 324                                                                                         $poster_url = "";
 325
 326                                                                                 $this->handle_as_video($doc, $entry, $url, $poster_url);
 327
 328                                                                         }
 329
 330                                                                         array_push($urls, $url);
 331
 332                                                                         $found = true;
 333                                                                 }
 334
 335                                                         }
 336
 337                                                         if ($debug) print_r($urls);
 338                                                 }
 339                                         }
 340                                 }
 341
 342                                 // wtf is this even
 343                                 if (!$found && preg_match("/^https?:\/\/gyazo\.com\/([^\.\/]+$)/", $entry->getAttribute("href"), $matches)) {
 344                                         $img_id = $matches[1];
 345
 346                                         _debug("handling as gyazo: $img_id", $debug);
 347
 348                                         $img = $doc->createElement('img');
 349                                         $img->setAttribute("src", "https://i.gyazo.com/$img_id.jpg");
 350
 351                                         $br = $doc->createElement('br');
 352                                         $entry->parentNode->insertBefore($img, $entry);
 353                                         $entry->parentNode->insertBefore($br, $entry);
 354
 355                                         $found = true;
 356                                 }
 357                         }
 358
 359                         // remove tiny thumbnails
 360                         if ($entry->hasAttribute("src")) {
 361                                 if ($entry->parentNode && $entry->parentNode->parentNode) {
 362                                         $entry->parentNode->parentNode->removeChild($entry->parentNode);
 363                                 }
 364                         }
 365                 }
 366
 367                 return $found;
 368         }
 369
 370         function hook_article_filter($article) {
 371
 372                 if (strpos($article["link"], "reddit.com/r/") !== FALSE) {
 373                         $doc = new DOMDocument();
 374                         @$doc->loadHTML($article["content"]);
 375                         $xpath = new DOMXPath($doc);
 376
 377                         $content_link = $xpath->query("(//a[contains(., '[link]')])")->item(0);
 378
 379                         if ($this->host->get($this, "enable_content_dupcheck")) {
 380
 381                                 if ($content_link) {
 382                                         $content_href = db_escape_string($content_link->getAttribute("href"));
 383                                         $entry_guid = db_escape_string($article["guid_hashed"]);
 384                                         $owner_uid = $article["owner_uid"];
 385
 386                                         if (DB_TYPE == "pgsql") {
 387                                                 $interval_qpart = "date_entered < NOW() - INTERVAL '1 day'";
 388                                         } else {
 389                                                 $interval_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 1 DAY)";
 390                                         }
 391
 392                                         $result = db_query("SELECT COUNT(id) AS cid
 393                                                 FROM ttrss_entries, ttrss_user_entries WHERE
 394                                                         ref_id = id AND
 395                                                         $interval_qpart AND
 396                                                         guid != '$entry_guid' AND
 397                                                         owner_uid = '$owner_uid' AND
 398                                                         content LIKE '%href=\"$content_href\">[link]%'");
 399
 400                                         if ($result) {
 401                                                 $num_found = db_fetch_result($result, 0, "cid");
 402
 403                                                 if ($num_found > 0) $article["force_catchup"] = true;
 404                                         }
 405                                 }
 406                         }
 407
 408                         $found = $this->inline_stuff($article, $doc, $xpath);
 409
 410                         $node = $doc->getElementsByTagName('body')->item(0);
 411
 412                         if ($node && $found) {
 413                                 $article["content"] = $doc->saveHTML($node);
 414                         } else if ($content_link) {
 415                                 $article = $this->readability($article, $content_link->getAttribute("href"), $doc, $xpath);
 416                         }
 417                 }
 418
 419                 return $article;
 420         }
 421
 422         function api_version() {
 423                 return 2;
 424         }
 425
 426         private function handle_as_video($doc, $entry, $source_stream, $poster_url = false, $debug = false) {
 427
 428                 _debug("handle_as_video: $source_stream", $debug);
 429
 430                 $video = $doc->createElement('video');
 431                 $video->setAttribute("autoplay", "1");
 432                 $video->setAttribute("controls", "1");
 433                 $video->setAttribute("loop", "1");
 434
 435                 if ($poster_url) $video->setAttribute("poster", $poster_url);
 436
 437                 $source = $doc->createElement('source');
 438                 $source->setAttribute("src", $source_stream);
 439                 $source->setAttribute("type", "video/mp4");
 440
 441                 $video->appendChild($source);
 442
 443                 $br = $doc->createElement('br');
 444                 $entry->parentNode->insertBefore($video, $entry);
 445                 $entry->parentNode->insertBefore($br, $entry);
 446
 447                 $img = $doc->createElement('img');
 448                 $img->setAttribute("src",
 449                         "data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D");
 450
 451                 $entry->parentNode->insertBefore($img, $entry);
 452         }
 453
 454         function testurl() {
 455                 $url = htmlspecialchars($_REQUEST["url"]);
 456
 457                 header("Content-type: text/plain");
 458
 459                 print "URL: $url\n";
 460
 461                 $doc = new DOMDocument();
 462                 @$doc->loadHTML("<html><body><a href=\"$url\">[link]</a></body>");
 463                 $xpath = new DOMXPath($doc);
 464
 465                 $found = $this->inline_stuff([], $doc, $xpath, true);
 466
 467                 print "Inline result: $found\n";
 468
 469                 if (!$found) {
 470                         print "\nReadability result:\n";
 471
 472                         $article = $this->readability([], $url, $doc, $xpath, true);
 473
 474                         print_r($article);
 475                 } else {
 476                         print "\nResulting HTML:\n";
 477
 478                         print $doc->saveHTML();
 479                 }
 480         }
 481
 482         private function get_header($url, $useragent = SELF_USER_AGENT, $header) {
 483                 $ret = false;
 484
 485                 if (function_exists("curl_init") && !defined("NO_CURL")) {
 486                         $ch = curl_init($url);
 487                         curl_setopt($ch, CURLOPT_TIMEOUT, 5);
 488                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 489                         curl_setopt($ch, CURLOPT_HEADER, true);
 490                         curl_setopt($ch, CURLOPT_NOBODY, true);
 491                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, !ini_get("open_basedir"));
 492                         curl_setopt($ch, CURLOPT_USERAGENT, $useragent);
 493
 494                         @curl_exec($ch);
 495                         $ret = curl_getinfo($ch, $header);
 496                 }
 497
 498                 return $ret;
 499         }
 500
 501         private function get_content_type($url, $useragent = SELF_USER_AGENT) {
 502                 return $this->get_header($url, $useragent, CURLINFO_CONTENT_TYPE);
 503         }
 504
 505         private function get_location($url, $useragent = SELF_USER_AGENT) {
 506                 return $this->get_header($url, $useragent, CURLINFO_EFFECTIVE_URL);
 507         }
 508
 509         /**
 510          * @SuppressWarnings(PHPMD.UnusedFormalParameter)
 511          */
 512         private function readability($article, $url, $doc, $xpath, $debug = false) {
 513
 514                 if (!defined('NO_CURL') && function_exists("curl_init") && $this->host->get($this, "enable_readability") &&
 515                         mb_strlen(strip_tags($article["content"])) <= 150) {
 516
 517                         if (!class_exists("Readability")) require_once(dirname(dirname(__DIR__)). "/lib/readability/Readability.php");
 518
 519                         if ($url &&
 520                                 strpos($url, "twitter.com") === FALSE &&
 521                                 strpos($url, "youtube.com") === FALSE &&
 522                                 strpos($url, "reddit.com") === FALSE) {
 523
 524                                 /* link may lead to a huge video file or whatever, we need to check content type before trying to
 525                                 parse it which p much requires curl */
 526
 527                                 $useragent_compat = "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)";
 528
 529                                 $content_type = $this->get_content_type($url, $useragent_compat);
 530
 531                                 if ($content_type && strpos($content_type, "text/html") !== FALSE) {
 532
 533                                         $tmp = fetch_file_contents(array("url" => $url,
 534                                                 "useragent" => $useragent_compat));
 535
 536                                         if ($debug) _debug("tmplen: " . mb_strlen($tmp));
 537
 538                                         if ($tmp && mb_strlen($tmp) < 1024 * 500) {
 539
 540                                                 $r = new Readability($tmp, $url);
 541
 542                                                 if ($r->init()) {
 543
 544                                                         $tmpxpath = new DOMXPath($r->dom);
 545
 546                                                         $entries = $tmpxpath->query('(//a[@href]|//img[@src])');
 547
 548                                                         foreach ($entries as $entry) {
 549                                                                 if ($entry->hasAttribute("href")) {
 550                                                                         $entry->setAttribute("href",
 551                                                                                 rewrite_relative_url($url, $entry->getAttribute("href")));
 552
 553                                                                 }
 554
 555                                                                 if ($entry->hasAttribute("src")) {
 556                                                                         $entry->setAttribute("src",
 557                                                                                 rewrite_relative_url($url, $entry->getAttribute("src")));
 558
 559                                                                 }
 560
 561                                                         }
 562
 563                                                         $article["content"] = $r->articleContent->innerHTML . "<hr/>" . $article["content"];
 564                                                 }
 565                                         }
 566                                 }
 567                         }
 568                 }
 569
 570                 return $article;
 571         }
 572 }