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) {
  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::log("processing href: " . $entry->getAttribute("href"), Debug::$LOG_VERBOSE);
  97
  98                                 $matches = array();
  99
 100                                 if (!$found && preg_match("/^https?:\/\/twitter.com\/(.*?)\/status\/(.*)/", $entry->getAttribute("href"), $matches)) {
 101                                         Debug::log("handling as twitter: " . $matches[1] . " " . $matches[2], Debug::$LOG_VERBOSE);
 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"), $matches)) {
 132
 133                                         Debug::log("Handling as Gfycat", Debug::$LOG_VERBOSE);
 134
 135                                         $source_stream = 'https://giant.gfycat.com/' . $matches[2] . '.mp4';
 136                                         $poster_url = 'https://thumbs.gfycat.com/' . $matches[2] . '-mobile.jpg';
 137
 138                                         $content_type = $this->get_content_type($source_stream);
 139
 140                                         if (strpos($content_type, "video/") !== FALSE) {
 141                                                 $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 142                                                 $found = 1;
 143                                         }
 144                                 }
 145
 146                                 if (!$found && preg_match("/https?:\/\/v\.redd\.it\/(.*)$/i", $entry->getAttribute("href"), $matches)) {
 147
 148                                         Debug::log("Handling as reddit inline video", Debug::$LOG_VERBOSE);
 149
 150                                         $img = $img_entries->item(0);
 151
 152                                         if ($img) {
 153                                                 $poster_url = $img->getAttribute("src");
 154                                         } else {
 155                                                 $poster_url = false;
 156                                         }
 157
 158                                         // Get original article URL from v.redd.it redirects
 159                                         $source_article_url = $this->get_location($matches[0]);
 160                                         Debug::log("Resolved ".$matches[0]." to ".$source_article_url, Debug::$LOG_VERBOSE);
 161
 162                                         $source_stream = false;
 163
 164                                         if ($source_article_url) {
 165                                                 $j = json_decode(fetch_file_contents($source_article_url.".json"), true);
 166
 167                                                 if ($j) {
 168                                                         foreach ($j as $listing) {
 169                                                                 foreach ($listing["data"]["children"] as $child) {
 170                                                                         if ($child["data"]["url"] == $matches[0]) {
 171                                                                                 try {
 172                                                                                         $source_stream = $child["data"]["media"]["reddit_video"]["fallback_url"];
 173                                                                                 }
 174                                                                                 catch (Exception $e) {
 175                                                                                 }
 176                                                                                 break 2;
 177                                                                         }
 178                                                                 }
 179                                                         }
 180                                                 }
 181                                         }
 182
 183                                         if (!$source_stream) {
 184                                                 $source_stream = "https://v.redd.it/" . $matches[1] . "/DASH_600_K";
 185                                         }
 186
 187                                         $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 188                                         $found = 1;
 189                                 }
 190
 191                                 if (!$found && preg_match("/https?:\/\/(www\.)?streamable.com\//i", $entry->getAttribute("href"))) {
 192
 193                                         Debug::log("Handling as Streamable", Debug::$LOG_VERBOSE);
 194
 195                                         $tmp = fetch_file_contents($entry->getAttribute("href"));
 196
 197                                         if ($tmp) {
 198                                                 $tmpdoc = new DOMDocument();
 199
 200                                                 if (@$tmpdoc->loadHTML($tmp)) {
 201                                                         $tmpxpath = new DOMXPath($tmpdoc);
 202
 203                                                         $source_node = $tmpxpath->query("//video[contains(@class,'video-player-tag')]//source[contains(@src, '.mp4')]")->item(0);
 204                                                         $poster_node = $tmpxpath->query("//video[contains(@class,'video-player-tag') and @poster]")->item(0);
 205
 206                                                         if ($source_node && $poster_node) {
 207                                                                 $source_stream = $source_node->getAttribute("src");
 208                                                                 $poster_url = $poster_node->getAttribute("poster");
 209
 210                                                                 $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 211                                                                 $found = 1;
 212                                                         }
 213                                                 }
 214                                         }
 215                                 }
 216
 217                                 // imgur .gif -> .gifv
 218                                 if (!$found && preg_match("/i\.imgur\.com\/(.*?)\.gif$/i", $entry->getAttribute("href"))) {
 219                                         Debug::log("Handling as imgur gif (->gifv)", Debug::$LOG_VERBOSE);
 220
 221                                         $entry->setAttribute("href",
 222                                                 str_replace(".gif", ".gifv", $entry->getAttribute("href")));
 223                                 }
 224
 225                                 if (!$found && preg_match("/\.(gifv|mp4)$/i", $entry->getAttribute("href"))) {
 226                                         Debug::log("Handling as imgur gifv", Debug::$LOG_VERBOSE);
 227
 228                                         $source_stream = str_replace(".gifv", ".mp4", $entry->getAttribute("href"));
 229
 230                                         if (strpos($source_stream, "imgur.com") !== FALSE)
 231                                                 $poster_url = str_replace(".mp4", "h.jpg", $source_stream);
 232
 233                                         $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 234
 235                                         $found = true;
 236                                 }
 237
 238                                 $matches = array();
 239                                 if (!$found && preg_match("/youtube\.com\/v\/([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 240                                         preg_match("/youtube\.com\/.*?[\&\?]v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 241                                         preg_match("/youtube\.com\/watch\?v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 242                                         preg_match("/\/\/youtu.be\/([\w-]+)/", $entry->getAttribute("href"), $matches)) {
 243
 244                                         $vid_id = $matches[1];
 245
 246                                         Debug::log("Handling as youtube: $vid_id", Debug::$LOG_VERBOSE);
 247
 248                                         $iframe = $doc->createElement("iframe");
 249                                         $iframe->setAttribute("class", "youtube-player");
 250                                         $iframe->setAttribute("type", "text/html");
 251                                         $iframe->setAttribute("width", "640");
 252                                         $iframe->setAttribute("height", "385");
 253                                         $iframe->setAttribute("src", "https://www.youtube.com/embed/$vid_id");
 254                                         $iframe->setAttribute("allowfullscreen", "1");
 255                                         $iframe->setAttribute("frameborder", "0");
 256
 257                                         $br = $doc->createElement('br');
 258                                         $entry->parentNode->insertBefore($iframe, $entry);
 259                                         $entry->parentNode->insertBefore($br, $entry);
 260
 261                                         $found = true;
 262                                 }
 263
 264                                 if (!$found && preg_match("/\.(jpg|jpeg|gif|png)(\?[0-9][0-9]*)?$/i", $entry->getAttribute("href")) ||
 265                                         mb_strpos($entry->getAttribute("href"), "i.reddituploads.com") !== FALSE ||
 266                                         mb_strpos($this->get_content_type($entry->getAttribute("href")), "image/") !== FALSE) {
 267
 268                                         Debug::log("Handling as a picture", Debug::$LOG_VERBOSE);
 269
 270                                         $img = $doc->createElement('img');
 271                                         $img->setAttribute("src", $entry->getAttribute("href"));
 272
 273                                         $br = $doc->createElement('br');
 274                                         $entry->parentNode->insertBefore($img, $entry);
 275                                         $entry->parentNode->insertBefore($br, $entry);
 276
 277                                         $found = true;
 278                                 }
 279
 280                                 // wtf is this even
 281                                 if (!$found && preg_match("/^https?:\/\/gyazo\.com\/([^\.\/]+$)/", $entry->getAttribute("href"), $matches)) {
 282                                         $img_id = $matches[1];
 283
 284                                         Debug::log("handling as gyazo: $img_id", Debug::$LOG_VERBOSE);
 285
 286                                         $img = $doc->createElement('img');
 287                                         $img->setAttribute("src", "https://i.gyazo.com/$img_id.jpg");
 288
 289                                         $br = $doc->createElement('br');
 290                                         $entry->parentNode->insertBefore($img, $entry);
 291                                         $entry->parentNode->insertBefore($br, $entry);
 292
 293                                         $found = true;
 294                                 }
 295
 296                                 // let's try meta properties
 297                                 if (!$found) {
 298                                         Debug::log("looking for meta og:image", Debug::$LOG_VERBOSE);
 299
 300                                         $content = fetch_file_contents(["url" => $entry->getAttribute("href"),
 301                                                 "http_accept" => "text/*"]);
 302
 303                                         if ($content) {
 304                                                 $cdoc = new DOMDocument();
 305
 306                                                 if (@$cdoc->loadHTML($content)) {
 307                                                         $cxpath = new DOMXPath($cdoc);
 308
 309                                                         $og_image = $cxpath->query("//meta[@property='og:image']")->item(0);
 310                                                         $og_video = $cxpath->query("//meta[@property='og:video']")->item(0);
 311
 312                                                         if ($og_video) {
 313
 314                                                                 $source_stream = $og_video->getAttribute("content");
 315
 316                                                                 if ($source_stream) {
 317
 318                                                                         if ($og_image) {
 319                                                                                 $poster_url = $og_image->getAttribute("content");
 320                                                                         } else {
 321                                                                                 $poster_url = false;
 322                                                                         }
 323
 324                                                                         $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 325                                                                         $found = true;
 326                                                                 }
 327
 328                                                         } else if ($og_image) {
 329
 330                                                                 $og_src = $og_image->getAttribute("content");
 331
 332                                                                 if ($og_src) {
 333                                                                         $img = $doc->createElement('img');
 334                                                                         $img->setAttribute("src", $og_src);
 335
 336                                                                         $br = $doc->createElement('br');
 337                                                                         $entry->parentNode->insertBefore($img, $entry);
 338                                                                         $entry->parentNode->insertBefore($br, $entry);
 339
 340                                                                         $found = true;
 341                                                                 }
 342                                                         }
 343                                                 }
 344                                         }
 345                                 }
 346
 347                         }
 348
 349                         // remove tiny thumbnails
 350                         if ($entry->hasAttribute("src")) {
 351                                 if ($entry->parentNode && $entry->parentNode->parentNode) {
 352                                         $entry->parentNode->parentNode->removeChild($entry->parentNode);
 353                                 }
 354                         }
 355                 }
 356
 357                 return $found;
 358         }
 359
 360         function hook_article_filter($article) {
 361
 362                 if (strpos($article["link"], "reddit.com/r/") !== FALSE) {
 363                         $doc = new DOMDocument();
 364                         @$doc->loadHTML($article["content"]);
 365                         $xpath = new DOMXPath($doc);
 366
 367                         $content_link = $xpath->query("(//a[contains(., '[link]')])")->item(0);
 368
 369                         if ($this->host->get($this, "enable_content_dupcheck")) {
 370
 371                                 if ($content_link) {
 372                                         $content_href = $content_link->getAttribute("href");
 373                                         $entry_guid = $article["guid_hashed"];
 374                                         $owner_uid = $article["owner_uid"];
 375
 376                                         if (DB_TYPE == "pgsql") {
 377                                                 $interval_qpart = "date_entered < NOW() - INTERVAL '1 day'";
 378                                         } else {
 379                                                 $interval_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 1 DAY)";
 380                                         }
 381
 382                                         $sth = $this->pdo->prepare("SELECT COUNT(id) AS cid
 383                                                 FROM ttrss_entries, ttrss_user_entries WHERE
 384                                                         ref_id = id AND
 385                                                         $interval_qpart AND
 386                                                         guid != ? AND
 387                                                         owner_uid = ? AND
 388                                                         content LIKE ?");
 389
 390                                         $sth->execute([$entry_guid, $owner_uid, "%href=\"$content_href\">[link]%"]);
 391
 392                                         if ($row = $sth->fetch()) {
 393                                                 $num_found = $row['cid'];
 394
 395                                                 if ($num_found > 0) $article["force_catchup"] = true;
 396                                         }
 397                                 }
 398                         }
 399
 400                         $found = $this->inline_stuff($article, $doc, $xpath);
 401
 402                         $node = $doc->getElementsByTagName('body')->item(0);
 403
 404                         if ($node && $found) {
 405                                 $article["content"] = $doc->saveHTML($node);
 406                         } else if ($content_link) {
 407                                 $article = $this->readability($article, $content_link->getAttribute("href"), $doc, $xpath);
 408                         }
 409                 }
 410
 411                 return $article;
 412         }
 413
 414         function api_version() {
 415                 return 2;
 416         }
 417
 418         private function handle_as_video($doc, $entry, $source_stream, $poster_url = false) {
 419
 420                 Debug::log("handle_as_video: $source_stream", Debug::$LOG_VERBOSE);
 421
 422                 $video = $doc->createElement('video');
 423                 $video->setAttribute("autoplay", "1");
 424                 $video->setAttribute("controls", "1");
 425                 $video->setAttribute("loop", "1");
 426
 427                 if ($poster_url) $video->setAttribute("poster", $poster_url);
 428
 429                 $source = $doc->createElement('source');
 430                 $source->setAttribute("src", $source_stream);
 431                 $source->setAttribute("type", "video/mp4");
 432
 433                 $video->appendChild($source);
 434
 435                 $br = $doc->createElement('br');
 436                 $entry->parentNode->insertBefore($video, $entry);
 437                 $entry->parentNode->insertBefore($br, $entry);
 438
 439                 $img = $doc->createElement('img');
 440                 $img->setAttribute("src",
 441                         "data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D");
 442
 443                 $entry->parentNode->insertBefore($img, $entry);
 444         }
 445
 446         function testurl() {
 447                 $url = htmlspecialchars($_REQUEST["url"]);
 448
 449                 header("Content-type: text/plain");
 450
 451                 print "URL: $url\n";
 452
 453                 $doc = new DOMDocument();
 454                 @$doc->loadHTML("<html><body><a href=\"$url\">[link]</a></body>");
 455                 $xpath = new DOMXPath($doc);
 456
 457                 $found = $this->inline_stuff([], $doc, $xpath);
 458
 459                 print "Inline result: $found\n";
 460
 461                 if (!$found) {
 462                         print "\nReadability result:\n";
 463
 464                         $article = $this->readability([], $url, $doc, $xpath);
 465
 466                         print_r($article);
 467                 } else {
 468                         print "\nResulting HTML:\n";
 469
 470                         print $doc->saveHTML();
 471                 }
 472         }
 473
 474         private function get_header($url, $useragent = SELF_USER_AGENT, $header) {
 475                 $ret = false;
 476
 477                 if (function_exists("curl_init") && !defined("NO_CURL")) {
 478                         $ch = curl_init($url);
 479                         curl_setopt($ch, CURLOPT_TIMEOUT, 5);
 480                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 481                         curl_setopt($ch, CURLOPT_HEADER, true);
 482                         curl_setopt($ch, CURLOPT_NOBODY, true);
 483                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, !ini_get("open_basedir"));
 484                         curl_setopt($ch, CURLOPT_USERAGENT, $useragent);
 485
 486                         @curl_exec($ch);
 487                         $ret = curl_getinfo($ch, $header);
 488                 }
 489
 490                 return $ret;
 491         }
 492
 493         private function get_content_type($url, $useragent = SELF_USER_AGENT) {
 494                 return $this->get_header($url, $useragent, CURLINFO_CONTENT_TYPE);
 495         }
 496
 497         private function get_location($url, $useragent = SELF_USER_AGENT) {
 498                 return $this->get_header($url, $useragent, CURLINFO_EFFECTIVE_URL);
 499         }
 500
 501         /**
 502          * @SuppressWarnings(PHPMD.UnusedFormalParameter)
 503          */
 504         private function readability($article, $url, $doc, $xpath, $debug = false) {
 505
 506                 if (!defined('NO_CURL') && function_exists("curl_init") && $this->host->get($this, "enable_readability") &&
 507                         mb_strlen(strip_tags($article["content"])) <= 150) {
 508
 509                         // do not try to embed posts linking back to other reddit posts
 510                         // readability.php requires PHP 5.6
 511                         if ($url &&     strpos($url, "reddit.com") === FALSE && version_compare(PHP_VERSION, '5.6.0', '>=')) {
 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(["url" => $url,
 523                                                 "useragent" => $useragent_compat,
 524                                                 "http_accept" => "text/html"]);
 525
 526                                         Debug::log("tmplen: " . mb_strlen($tmp), Debug::$LOG_VERBOSE);
 527
 528                                         if ($tmp && mb_strlen($tmp) < 1024 * 500) {
 529
 530                                                 $r = new Readability(new Configuration());
 531
 532                                                 try {
 533                                                         if ($r->parse($tmp)) {
 534
 535                                                                 $tmpxpath = new DOMXPath($r->getDOMDocument());
 536
 537                                                                 $entries = $tmpxpath->query('(//a[@href]|//img[@src])');
 538
 539                                                                 foreach ($entries as $entry) {
 540                                                                         if ($entry->hasAttribute("href")) {
 541                                                                                 $entry->setAttribute("href",
 542                                                                                         rewrite_relative_url($url, $entry->getAttribute("href")));
 543
 544                                                                         }
 545
 546                                                                         if ($entry->hasAttribute("src")) {
 547                                                                                 $entry->setAttribute("src",
 548                                                                                         rewrite_relative_url($url, $entry->getAttribute("src")));
 549
 550                                                                         }
 551
 552                                                                 }
 553
 554                                                                 $article["content"] = $r->getContent() . "<hr/>" . $article["content"];
 555                                                         }
 556                                                 } catch (Exception $e) {
 557                                                         //
 558                                                 }
 559                                         }
 560                                 }
 561                         }
 562                 }
 563
 564                 return $article;
 565         }
 566 }