plugins/af_redditimgur/init.php

   1 <?php
   2 use andreskrey\Readability\Readability;
   3 use andreskrey\Readability\Configuration;
   4
   5 class Af_RedditImgur extends Plugin {
   6
   7         /* @var PluginHost $host */
   8         private $host;
   9
  10         function about() {
  11                 return array(1.0,
  12                         "Inline images (and other content) in Reddit RSS feeds",
  13                         "fox");
  14         }
  15
  16         function flags() {
  17                 return array("needs_curl" => true);
  18         }
  19
  20         function init($host) {
  21                 $this->host = $host;
  22
  23                 $host->add_hook($host::HOOK_ARTICLE_FILTER, $this);
  24                 $host->add_hook($host::HOOK_PREFS_TAB, $this);
  25         }
  26
  27         function hook_prefs_tab($args) {
  28                 if ($args != "prefFeeds") return;
  29
  30                 print "<div dojoType=\"dijit.layout.AccordionPane\" title=\"".__('Reddit content settings (af_redditimgur)')."\">";
  31
  32                 $enable_readability = $this->host->get($this, "enable_readability");
  33                 $enable_content_dupcheck = $this->host->get($this, "enable_content_dupcheck");
  34
  35                 if (version_compare(PHP_VERSION, '5.6.0', '<')) {
  36                         print_error("Readability requires PHP version 5.6.");
  37                 }
  38
  39                 print "<form dojoType=\"dijit.form.Form\">";
  40
  41                 print "<script type=\"dojo/method\" event=\"onSubmit\" args=\"evt\">
  42                         evt.preventDefault();
  43                         if (this.validate()) {
  44                                 console.log(dojo.objectToQuery(this.getValues()));
  45                                 new Ajax.Request('backend.php', {
  46                                         parameters: dojo.objectToQuery(this.getValues()),
  47                                         onComplete: function(transport) {
  48                                                 notify_info(transport.responseText);
  49                                         }
  50                                 });
  51                                 //this.reset();
  52                         }
  53                         </script>";
  54
  55                 print_hidden("op", "pluginhandler");
  56                 print_hidden("method", "save");
  57                 print_hidden("plugin", "af_redditimgur");
  58
  59                 print_checkbox("enable_readability", $enable_readability);
  60                 print "&nbsp;<label for=\"enable_readability\">" . __("Extract missing content using Readability") . "</label>";
  61
  62                 print "<br/>";
  63
  64                 print_checkbox("enable_content_dupcheck", $enable_content_dupcheck);
  65                 print "&nbsp;<label for=\"enable_content_dupcheck\">" . __("Enable additional duplicate checking") . "</label>";
  66                 print "<p>"; print_button("submit", __("Save"));
  67                 print "</form>";
  68
  69                 print "</div>";
  70         }
  71
  72         function save() {
  73                 $enable_readability = checkbox_to_sql_bool($_POST["enable_readability"]);
  74                 $enable_content_dupcheck = checkbox_to_sql_bool($_POST["enable_content_dupcheck"]);
  75
  76                 $this->host->set($this, "enable_readability", $enable_readability, false);
  77                 $this->host->set($this, "enable_content_dupcheck", $enable_content_dupcheck);
  78
  79                 echo __("Configuration saved");
  80         }
  81
  82         /**
  83          * @SuppressWarnings(PHPMD.UnusedFormalParameter)
  84          */
  85         private function inline_stuff($article, &$doc, $xpath, $debug = false) {
  86
  87                 $entries = $xpath->query('(//a[@href]|//img[@src])');
  88                 $img_entries = $xpath->query("(//img[@src])");
  89
  90                 $found = false;
  91                 //$debug = 1;
  92
  93                 foreach ($entries as $entry) {
  94                         if ($entry->hasAttribute("href") && strpos($entry->getAttribute("href"), "reddit.com") === FALSE) {
  95
  96                                 _debug("processing href: " . $entry->getAttribute("href"), $debug);
  97
  98                                 $matches = array();
  99
 100                                 if (!$found && preg_match("/^https?:\/\/twitter.com\/(.*?)\/status\/(.*)/", $entry->getAttribute("href"), $matches)) {
 101                                         _debug("handling as twitter: " . $matches[1] . " " . $matches[2], $debug);
 102
 103                                         $oembed_result = fetch_file_contents("https://publish.twitter.com/oembed?url=" . urlencode($entry->getAttribute("href")));
 104
 105                                         if ($oembed_result) {
 106                                                 $oembed_result = json_decode($oembed_result, true);
 107
 108                                                 if ($oembed_result && isset($oembed_result["html"])) {
 109
 110                                                         $tmp = new DOMDocument();
 111                                                         if ($tmp->loadHTML('<?xml encoding="utf-8" ?>' . $oembed_result["html"])) {
 112                                                                 $p = $doc->createElement("p");
 113
 114                                                                 $p->appendChild($doc->importNode(
 115                                                                         $tmp->getElementsByTagName("blockquote")->item(0), TRUE));
 116
 117                                                                 $br = $doc->createElement('br');
 118                                                                 $entry->parentNode->insertBefore($p, $entry);
 119                                                                 $entry->parentNode->insertBefore($br, $entry);
 120
 121                                                                 $found = 1;
 122                                                         }
 123                                                 }
 124                                         }
 125                                 }
 126
 127                                 if (!$found && preg_match("/\.gfycat.com\/([a-z]+)?(\.[a-z]+)$/i", $entry->getAttribute("href"), $matches)) {
 128                                         $entry->setAttribute("href", "http://www.gfycat.com/".$matches[1]);
 129                                 }
 130
 131                                 if (!$found && preg_match("/https?:\/\/(www\.)?gfycat.com\/([a-z]+)$/i", $entry->getAttribute("href"), $matches)) {
 132
 133                                         _debug("Handling as Gfycat", $debug);
 134
 135                                         $tmp = fetch_file_contents($entry->getAttribute("href"));
 136
 137                                         if ($tmp) {
 138                                                 $tmpdoc = new DOMDocument();
 139
 140                                                 if (@$tmpdoc->loadHTML($tmp)) {
 141                                                         $tmpxpath = new DOMXPath($tmpdoc);
 142
 143                                                         $source_node = $tmpxpath->query("//video[contains(@class,'share-video')]//source[contains(@src, '.mp4')]")->item(0);
 144                                                         $poster_node = $tmpxpath->query("//video[contains(@class,'share-video') and @poster]")->item(0);
 145
 146                                                         if ($source_node && $poster_node) {
 147                                                                 $source_stream = $source_node->getAttribute("src");
 148                                                                 $poster_url = $poster_node->getAttribute("poster");
 149
 150                                                                 $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 151                                                                 $found = 1;
 152                                                         }
 153                                                 }
 154                                         }
 155                                 }
 156
 157                                 if (!$found && preg_match("/https?:\/\/v\.redd\.it\/(.*)$/i", $entry->getAttribute("href"), $matches)) {
 158
 159                                         _debug("Handling as reddit inline video", $debug);
 160
 161                                         $img = $img_entries->item(0);
 162
 163                                         if ($img) {
 164                                                 $poster_url = $img->getAttribute("src");
 165                                         } else {
 166                                                 $poster_url = false;
 167                                         }
 168
 169                                         // Get original article URL from v.redd.it redirects
 170                                         $source_article_url = $this->get_location($matches[0]);
 171                                         _debug("Resolved ".$matches[0]." to ".$source_article_url, $debug);
 172
 173                                         $source_stream = false;
 174
 175                                         if ($source_article_url) {
 176                                                 $j = json_decode(fetch_file_contents($source_article_url.".json"), true);
 177
 178                                                 if ($j) {
 179                                                         foreach ($j as $listing) {
 180                                                                 foreach ($listing["data"]["children"] as $child) {
 181                                                                         if ($child["data"]["url"] == $matches[0]) {
 182                                                                                 try {
 183                                                                                         $source_stream = $child["data"]["media"]["reddit_video"]["fallback_url"];
 184                                                                                 }
 185                                                                                 catch (Exception $e) {
 186                                                                                 }
 187                                                                                 break 2;
 188                                                                         }
 189                                                                 }
 190                                                         }
 191                                                 }
 192                                         }
 193
 194                                         if (!$source_stream) {
 195                                                 $source_stream = "https://v.redd.it/" . $matches[1] . "/DASH_600_K";
 196                                         }
 197
 198                                         $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 199                                         $found = 1;
 200                                 }
 201
 202                                 if (!$found && preg_match("/https?:\/\/(www\.)?streamable.com\//i", $entry->getAttribute("href"))) {
 203
 204                                         _debug("Handling as Streamable", $debug);
 205
 206                                         $tmp = fetch_file_contents($entry->getAttribute("href"));
 207
 208                                         if ($tmp) {
 209                                                 $tmpdoc = new DOMDocument();
 210
 211                                                 if (@$tmpdoc->loadHTML($tmp)) {
 212                                                         $tmpxpath = new DOMXPath($tmpdoc);
 213
 214                                                         $source_node = $tmpxpath->query("//video[contains(@class,'video-player-tag')]//source[contains(@src, '.mp4')]")->item(0);
 215                                                         $poster_node = $tmpxpath->query("//video[contains(@class,'video-player-tag') and @poster]")->item(0);
 216
 217                                                         if ($source_node && $poster_node) {
 218                                                                 $source_stream = $source_node->getAttribute("src");
 219                                                                 $poster_url = $poster_node->getAttribute("poster");
 220
 221                                                                 $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 222                                                                 $found = 1;
 223                                                         }
 224                                                 }
 225                                         }
 226                                 }
 227
 228                                 // imgur .gif -> .gifv
 229                                 if (!$found && preg_match("/i\.imgur\.com\/(.*?)\.gif$/i", $entry->getAttribute("href"))) {
 230                                         _debug("Handling as imgur gif (->gifv)", $debug);
 231
 232                                         $entry->setAttribute("href",
 233                                                 str_replace(".gif", ".gifv", $entry->getAttribute("href")));
 234                                 }
 235
 236                                 if (!$found && preg_match("/\.(gifv|mp4)$/i", $entry->getAttribute("href"))) {
 237                                         _debug("Handling as imgur gifv", $debug);
 238
 239                                         $source_stream = str_replace(".gifv", ".mp4", $entry->getAttribute("href"));
 240
 241                                         if (strpos($source_stream, "imgur.com") !== FALSE)
 242                                                 $poster_url = str_replace(".mp4", "h.jpg", $source_stream);
 243
 244                                         $this->handle_as_video($doc, $entry, $source_stream, $poster_url, $debug);
 245
 246                                         $found = true;
 247                                 }
 248
 249                                 $matches = array();
 250                                 if (!$found && preg_match("/youtube\.com\/v\/([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 251                                         preg_match("/youtube\.com\/.*?[\&\?]v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 252                                         preg_match("/youtube\.com\/watch\?v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 253                                         preg_match("/\/\/youtu.be\/([\w-]+)/", $entry->getAttribute("href"), $matches)) {
 254
 255                                         $vid_id = $matches[1];
 256
 257                                         _debug("Handling as youtube: $vid_id", $debug);
 258
 259                                         $iframe = $doc->createElement("iframe");
 260                                         $iframe->setAttribute("class", "youtube-player");
 261                                         $iframe->setAttribute("type", "text/html");
 262                                         $iframe->setAttribute("width", "640");
 263                                         $iframe->setAttribute("height", "385");
 264                                         $iframe->setAttribute("src", "https://www.youtube.com/embed/$vid_id");
 265                                         $iframe->setAttribute("allowfullscreen", "1");
 266                                         $iframe->setAttribute("frameborder", "0");
 267
 268                                         $br = $doc->createElement('br');
 269                                         $entry->parentNode->insertBefore($iframe, $entry);
 270                                         $entry->parentNode->insertBefore($br, $entry);
 271
 272                                         $found = true;
 273                                 }
 274
 275                                 if (!$found && preg_match("/\.(jpg|jpeg|gif|png)(\?[0-9][0-9]*)?$/i", $entry->getAttribute("href")) ||
 276                                         mb_strpos($entry->getAttribute("href"), "i.reddituploads.com") !== FALSE ||
 277                                         mb_strpos($this->get_content_type($entry->getAttribute("href")), "image/") !== FALSE) {
 278
 279                                         _debug("Handling as a picture", $debug);
 280
 281                                         $img = $doc->createElement('img');
 282                                         $img->setAttribute("src", $entry->getAttribute("href"));
 283
 284                                         $br = $doc->createElement('br');
 285                                         $entry->parentNode->insertBefore($img, $entry);
 286                                         $entry->parentNode->insertBefore($br, $entry);
 287
 288                                         $found = true;
 289                                 }
 290
 291                                 // wtf is this even
 292                                 if (!$found && preg_match("/^https?:\/\/gyazo\.com\/([^\.\/]+$)/", $entry->getAttribute("href"), $matches)) {
 293                                         $img_id = $matches[1];
 294
 295                                         _debug("handling as gyazo: $img_id", $debug);
 296
 297                                         $img = $doc->createElement('img');
 298                                         $img->setAttribute("src", "https://i.gyazo.com/$img_id.jpg");
 299
 300                                         $br = $doc->createElement('br');
 301                                         $entry->parentNode->insertBefore($img, $entry);
 302                                         $entry->parentNode->insertBefore($br, $entry);
 303
 304                                         $found = true;
 305                                 }
 306
 307                                 // let's try meta properties
 308                                 if (!$found) {
 309                                         _debug("looking for meta og:image", $debug);
 310
 311                                         $content = fetch_file_contents(["url" => $entry->getAttribute("href"),
 312                                                 "http_accept" => "text/*"]);
 313
 314                                         if ($content) {
 315                                                 $cdoc = new DOMDocument();
 316
 317                                                 if (@$cdoc->loadHTML($content)) {
 318                                                         $cxpath = new DOMXPath($cdoc);
 319
 320                                                         $og_image = $cxpath->query("//meta[@property='og:image']")->item(0);
 321
 322                                                         if ($og_image) {
 323
 324                                                                 $og_src = $og_image->getAttribute("content");
 325
 326                                                                 if ($og_src) {
 327                                                                         $img = $doc->createElement('img');
 328                                                                         $img->setAttribute("src", $og_src);
 329
 330                                                                         $br = $doc->createElement('br');
 331                                                                         $entry->parentNode->insertBefore($img, $entry);
 332                                                                         $entry->parentNode->insertBefore($br, $entry);
 333
 334                                                                         $found = true;
 335                                                                 }
 336                                                         }
 337                                                 }
 338                                         }
 339                                 }
 340
 341                         }
 342
 343                         // remove tiny thumbnails
 344                         if ($entry->hasAttribute("src")) {
 345                                 if ($entry->parentNode && $entry->parentNode->parentNode) {
 346                                         $entry->parentNode->parentNode->removeChild($entry->parentNode);
 347                                 }
 348                         }
 349                 }
 350
 351                 return $found;
 352         }
 353
 354         function hook_article_filter($article) {
 355
 356                 if (strpos($article["link"], "reddit.com/r/") !== FALSE) {
 357                         $doc = new DOMDocument();
 358                         @$doc->loadHTML($article["content"]);
 359                         $xpath = new DOMXPath($doc);
 360
 361                         $content_link = $xpath->query("(//a[contains(., '[link]')])")->item(0);
 362
 363                         if ($this->host->get($this, "enable_content_dupcheck")) {
 364
 365                                 if ($content_link) {
 366                                         $content_href = $content_link->getAttribute("href");
 367                                         $entry_guid = $article["guid_hashed"];
 368                                         $owner_uid = $article["owner_uid"];
 369
 370                                         if (DB_TYPE == "pgsql") {
 371                                                 $interval_qpart = "date_entered < NOW() - INTERVAL '1 day'";
 372                                         } else {
 373                                                 $interval_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 1 DAY)";
 374                                         }
 375
 376                                         $sth = $this->pdo->prepare("SELECT COUNT(id) AS cid
 377                                                 FROM ttrss_entries, ttrss_user_entries WHERE
 378                                                         ref_id = id AND
 379                                                         $interval_qpart AND
 380                                                         guid != ? AND
 381                                                         owner_uid = ? AND
 382                                                         content LIKE ?");
 383
 384                                         $sth->execute([$entry_guid, $owner_uid, "%href=\"$content_href\">[link]%"]);
 385
 386                                         if ($row = $sth->fetch()) {
 387                                                 $num_found = $row['cid'];
 388
 389                                                 if ($num_found > 0) $article["force_catchup"] = true;
 390                                         }
 391                                 }
 392                         }
 393
 394                         $found = $this->inline_stuff($article, $doc, $xpath);
 395
 396                         $node = $doc->getElementsByTagName('body')->item(0);
 397
 398                         if ($node && $found) {
 399                                 $article["content"] = $doc->saveHTML($node);
 400                         } else if ($content_link) {
 401                                 $article = $this->readability($article, $content_link->getAttribute("href"), $doc, $xpath);
 402                         }
 403                 }
 404
 405                 return $article;
 406         }
 407
 408         function api_version() {
 409                 return 2;
 410         }
 411
 412         private function handle_as_video($doc, $entry, $source_stream, $poster_url = false, $debug = false) {
 413
 414                 _debug("handle_as_video: $source_stream", $debug);
 415
 416                 $video = $doc->createElement('video');
 417                 $video->setAttribute("autoplay", "1");
 418                 $video->setAttribute("controls", "1");
 419                 $video->setAttribute("loop", "1");
 420
 421                 if ($poster_url) $video->setAttribute("poster", $poster_url);
 422
 423                 $source = $doc->createElement('source');
 424                 $source->setAttribute("src", $source_stream);
 425                 $source->setAttribute("type", "video/mp4");
 426
 427                 $video->appendChild($source);
 428
 429                 $br = $doc->createElement('br');
 430                 $entry->parentNode->insertBefore($video, $entry);
 431                 $entry->parentNode->insertBefore($br, $entry);
 432
 433                 $img = $doc->createElement('img');
 434                 $img->setAttribute("src",
 435                         "data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D");
 436
 437                 $entry->parentNode->insertBefore($img, $entry);
 438         }
 439
 440         function testurl() {
 441                 $url = htmlspecialchars($_REQUEST["url"]);
 442
 443                 header("Content-type: text/plain");
 444
 445                 print "URL: $url\n";
 446
 447                 $doc = new DOMDocument();
 448                 @$doc->loadHTML("<html><body><a href=\"$url\">[link]</a></body>");
 449                 $xpath = new DOMXPath($doc);
 450
 451                 $found = $this->inline_stuff([], $doc, $xpath, true);
 452
 453                 print "Inline result: $found\n";
 454
 455                 if (!$found) {
 456                         print "\nReadability result:\n";
 457
 458                         $article = $this->readability([], $url, $doc, $xpath, true);
 459
 460                         print_r($article);
 461                 } else {
 462                         print "\nResulting HTML:\n";
 463
 464                         print $doc->saveHTML();
 465                 }
 466         }
 467
 468         private function get_header($url, $useragent = SELF_USER_AGENT, $header) {
 469                 $ret = false;
 470
 471                 if (function_exists("curl_init") && !defined("NO_CURL")) {
 472                         $ch = curl_init($url);
 473                         curl_setopt($ch, CURLOPT_TIMEOUT, 5);
 474                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 475                         curl_setopt($ch, CURLOPT_HEADER, true);
 476                         curl_setopt($ch, CURLOPT_NOBODY, true);
 477                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, !ini_get("open_basedir"));
 478                         curl_setopt($ch, CURLOPT_USERAGENT, $useragent);
 479
 480                         @curl_exec($ch);
 481                         $ret = curl_getinfo($ch, $header);
 482                 }
 483
 484                 return $ret;
 485         }
 486
 487         private function get_content_type($url, $useragent = SELF_USER_AGENT) {
 488                 return $this->get_header($url, $useragent, CURLINFO_CONTENT_TYPE);
 489         }
 490
 491         private function get_location($url, $useragent = SELF_USER_AGENT) {
 492                 return $this->get_header($url, $useragent, CURLINFO_EFFECTIVE_URL);
 493         }
 494
 495         /**
 496          * @SuppressWarnings(PHPMD.UnusedFormalParameter)
 497          */
 498         private function readability($article, $url, $doc, $xpath, $debug = false) {
 499
 500                 if (!defined('NO_CURL') && function_exists("curl_init") && $this->host->get($this, "enable_readability") &&
 501                         mb_strlen(strip_tags($article["content"])) <= 150) {
 502
 503                         // do not try to embed posts linking back to other reddit posts
 504                         // readability.php requires PHP 5.6
 505                         if ($url &&     strpos($url, "reddit.com") === FALSE && version_compare(PHP_VERSION, '5.6.0', '>=')) {
 506
 507                                 /* link may lead to a huge video file or whatever, we need to check content type before trying to
 508                                 parse it which p much requires curl */
 509
 510                                 $useragent_compat = "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)";
 511
 512                                 $content_type = $this->get_content_type($url, $useragent_compat);
 513
 514                                 if ($content_type && strpos($content_type, "text/html") !== FALSE) {
 515
 516                                         $tmp = fetch_file_contents(["url" => $url,
 517                                                 "useragent" => $useragent_compat,
 518                                                 "http_accept" => "text/html"]);
 519
 520                                         if ($debug) _debug("tmplen: " . mb_strlen($tmp));
 521
 522                                         if ($tmp && mb_strlen($tmp) < 1024 * 500) {
 523
 524                                                 $r = new Readability(new Configuration());
 525
 526                                                 try {
 527                                                         if ($r->parse($tmp)) {
 528
 529                                                                 $tmpxpath = new DOMXPath($r->getDOMDocument());
 530
 531                                                                 $entries = $tmpxpath->query('(//a[@href]|//img[@src])');
 532
 533                                                                 foreach ($entries as $entry) {
 534                                                                         if ($entry->hasAttribute("href")) {
 535                                                                                 $entry->setAttribute("href",
 536                                                                                         rewrite_relative_url($url, $entry->getAttribute("href")));
 537
 538                                                                         }
 539
 540                                                                         if ($entry->hasAttribute("src")) {
 541                                                                                 $entry->setAttribute("src",
 542                                                                                         rewrite_relative_url($url, $entry->getAttribute("src")));
 543
 544                                                                         }
 545
 546                                                                 }
 547
 548                                                                 $article["content"] = $r->getContent() . "<hr/>" . $article["content"];
 549                                                         }
 550                                                 } catch (Exception $e) {
 551                                                         //
 552                                                 }
 553                                         }
 554                                 }
 555                         }
 556                 }
 557
 558                 return $article;
 559         }
 560 }