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                                         $source_stream = 'https://giant.gfycat.com/' . $matches[2] . '.mp4';
 136                                         $poster_url = 'https://thumbs.gfycat.com/' . $matches[2] . '-mobile.jpg';
 137
 138                                         $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 139                                         $found = 1;
 140                                 }
 141
 142                                 if (!$found && preg_match("/https?:\/\/v\.redd\.it\/(.*)$/i", $entry->getAttribute("href"), $matches)) {
 143
 144                                         _debug("Handling as reddit inline video", $debug);
 145
 146                                         $img = $img_entries->item(0);
 147
 148                                         if ($img) {
 149                                                 $poster_url = $img->getAttribute("src");
 150                                         } else {
 151                                                 $poster_url = false;
 152                                         }
 153
 154                                         // Get original article URL from v.redd.it redirects
 155                                         $source_article_url = $this->get_location($matches[0]);
 156                                         _debug("Resolved ".$matches[0]." to ".$source_article_url, $debug);
 157
 158                                         $source_stream = false;
 159
 160                                         if ($source_article_url) {
 161                                                 $j = json_decode(fetch_file_contents($source_article_url.".json"), true);
 162
 163                                                 if ($j) {
 164                                                         foreach ($j as $listing) {
 165                                                                 foreach ($listing["data"]["children"] as $child) {
 166                                                                         if ($child["data"]["url"] == $matches[0]) {
 167                                                                                 try {
 168                                                                                         $source_stream = $child["data"]["media"]["reddit_video"]["fallback_url"];
 169                                                                                 }
 170                                                                                 catch (Exception $e) {
 171                                                                                 }
 172                                                                                 break 2;
 173                                                                         }
 174                                                                 }
 175                                                         }
 176                                                 }
 177                                         }
 178
 179                                         if (!$source_stream) {
 180                                                 $source_stream = "https://v.redd.it/" . $matches[1] . "/DASH_600_K";
 181                                         }
 182
 183                                         $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 184                                         $found = 1;
 185                                 }
 186
 187                                 if (!$found && preg_match("/https?:\/\/(www\.)?streamable.com\//i", $entry->getAttribute("href"))) {
 188
 189                                         _debug("Handling as Streamable", $debug);
 190
 191                                         $tmp = fetch_file_contents($entry->getAttribute("href"));
 192
 193                                         if ($tmp) {
 194                                                 $tmpdoc = new DOMDocument();
 195
 196                                                 if (@$tmpdoc->loadHTML($tmp)) {
 197                                                         $tmpxpath = new DOMXPath($tmpdoc);
 198
 199                                                         $source_node = $tmpxpath->query("//video[contains(@class,'video-player-tag')]//source[contains(@src, '.mp4')]")->item(0);
 200                                                         $poster_node = $tmpxpath->query("//video[contains(@class,'video-player-tag') and @poster]")->item(0);
 201
 202                                                         if ($source_node && $poster_node) {
 203                                                                 $source_stream = $source_node->getAttribute("src");
 204                                                                 $poster_url = $poster_node->getAttribute("poster");
 205
 206                                                                 $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 207                                                                 $found = 1;
 208                                                         }
 209                                                 }
 210                                         }
 211                                 }
 212
 213                                 // imgur .gif -> .gifv
 214                                 if (!$found && preg_match("/i\.imgur\.com\/(.*?)\.gif$/i", $entry->getAttribute("href"))) {
 215                                         _debug("Handling as imgur gif (->gifv)", $debug);
 216
 217                                         $entry->setAttribute("href",
 218                                                 str_replace(".gif", ".gifv", $entry->getAttribute("href")));
 219                                 }
 220
 221                                 if (!$found && preg_match("/\.(gifv|mp4)$/i", $entry->getAttribute("href"))) {
 222                                         _debug("Handling as imgur gifv", $debug);
 223
 224                                         $source_stream = str_replace(".gifv", ".mp4", $entry->getAttribute("href"));
 225
 226                                         if (strpos($source_stream, "imgur.com") !== FALSE)
 227                                                 $poster_url = str_replace(".mp4", "h.jpg", $source_stream);
 228
 229                                         $this->handle_as_video($doc, $entry, $source_stream, $poster_url, $debug);
 230
 231                                         $found = true;
 232                                 }
 233
 234                                 $matches = array();
 235                                 if (!$found && preg_match("/youtube\.com\/v\/([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 236                                         preg_match("/youtube\.com\/.*?[\&\?]v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 237                                         preg_match("/youtube\.com\/watch\?v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 238                                         preg_match("/\/\/youtu.be\/([\w-]+)/", $entry->getAttribute("href"), $matches)) {
 239
 240                                         $vid_id = $matches[1];
 241
 242                                         _debug("Handling as youtube: $vid_id", $debug);
 243
 244                                         $iframe = $doc->createElement("iframe");
 245                                         $iframe->setAttribute("class", "youtube-player");
 246                                         $iframe->setAttribute("type", "text/html");
 247                                         $iframe->setAttribute("width", "640");
 248                                         $iframe->setAttribute("height", "385");
 249                                         $iframe->setAttribute("src", "https://www.youtube.com/embed/$vid_id");
 250                                         $iframe->setAttribute("allowfullscreen", "1");
 251                                         $iframe->setAttribute("frameborder", "0");
 252
 253                                         $br = $doc->createElement('br');
 254                                         $entry->parentNode->insertBefore($iframe, $entry);
 255                                         $entry->parentNode->insertBefore($br, $entry);
 256
 257                                         $found = true;
 258                                 }
 259
 260                                 if (!$found && preg_match("/\.(jpg|jpeg|gif|png)(\?[0-9][0-9]*)?$/i", $entry->getAttribute("href")) ||
 261                                         mb_strpos($entry->getAttribute("href"), "i.reddituploads.com") !== FALSE ||
 262                                         mb_strpos($this->get_content_type($entry->getAttribute("href")), "image/") !== FALSE) {
 263
 264                                         _debug("Handling as a picture", $debug);
 265
 266                                         $img = $doc->createElement('img');
 267                                         $img->setAttribute("src", $entry->getAttribute("href"));
 268
 269                                         $br = $doc->createElement('br');
 270                                         $entry->parentNode->insertBefore($img, $entry);
 271                                         $entry->parentNode->insertBefore($br, $entry);
 272
 273                                         $found = true;
 274                                 }
 275
 276                                 // wtf is this even
 277                                 if (!$found && preg_match("/^https?:\/\/gyazo\.com\/([^\.\/]+$)/", $entry->getAttribute("href"), $matches)) {
 278                                         $img_id = $matches[1];
 279
 280                                         _debug("handling as gyazo: $img_id", $debug);
 281
 282                                         $img = $doc->createElement('img');
 283                                         $img->setAttribute("src", "https://i.gyazo.com/$img_id.jpg");
 284
 285                                         $br = $doc->createElement('br');
 286                                         $entry->parentNode->insertBefore($img, $entry);
 287                                         $entry->parentNode->insertBefore($br, $entry);
 288
 289                                         $found = true;
 290                                 }
 291
 292                                 // let's try meta properties
 293                                 if (!$found) {
 294                                         _debug("looking for meta og:image", $debug);
 295
 296                                         $content = fetch_file_contents(["url" => $entry->getAttribute("href"),
 297                                                 "http_accept" => "text/*"]);
 298
 299                                         if ($content) {
 300                                                 $cdoc = new DOMDocument();
 301
 302                                                 if (@$cdoc->loadHTML($content)) {
 303                                                         $cxpath = new DOMXPath($cdoc);
 304
 305                                                         $og_image = $cxpath->query("//meta[@property='og:image']")->item(0);
 306
 307                                                         if ($og_image) {
 308
 309                                                                 $og_src = $og_image->getAttribute("content");
 310
 311                                                                 if ($og_src) {
 312                                                                         $img = $doc->createElement('img');
 313                                                                         $img->setAttribute("src", $og_src);
 314
 315                                                                         $br = $doc->createElement('br');
 316                                                                         $entry->parentNode->insertBefore($img, $entry);
 317                                                                         $entry->parentNode->insertBefore($br, $entry);
 318
 319                                                                         $found = true;
 320                                                                 }
 321                                                         }
 322                                                 }
 323                                         }
 324                                 }
 325
 326                         }
 327
 328                         // remove tiny thumbnails
 329                         if ($entry->hasAttribute("src")) {
 330                                 if ($entry->parentNode && $entry->parentNode->parentNode) {
 331                                         $entry->parentNode->parentNode->removeChild($entry->parentNode);
 332                                 }
 333                         }
 334                 }
 335
 336                 return $found;
 337         }
 338
 339         function hook_article_filter($article) {
 340
 341                 if (strpos($article["link"], "reddit.com/r/") !== FALSE) {
 342                         $doc = new DOMDocument();
 343                         @$doc->loadHTML($article["content"]);
 344                         $xpath = new DOMXPath($doc);
 345
 346                         $content_link = $xpath->query("(//a[contains(., '[link]')])")->item(0);
 347
 348                         if ($this->host->get($this, "enable_content_dupcheck")) {
 349
 350                                 if ($content_link) {
 351                                         $content_href = $content_link->getAttribute("href");
 352                                         $entry_guid = $article["guid_hashed"];
 353                                         $owner_uid = $article["owner_uid"];
 354
 355                                         if (DB_TYPE == "pgsql") {
 356                                                 $interval_qpart = "date_entered < NOW() - INTERVAL '1 day'";
 357                                         } else {
 358                                                 $interval_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 1 DAY)";
 359                                         }
 360
 361                                         $sth = $this->pdo->prepare("SELECT COUNT(id) AS cid
 362                                                 FROM ttrss_entries, ttrss_user_entries WHERE
 363                                                         ref_id = id AND
 364                                                         $interval_qpart AND
 365                                                         guid != ? AND
 366                                                         owner_uid = ? AND
 367                                                         content LIKE ?");
 368
 369                                         $sth->execute([$entry_guid, $owner_uid, "%href=\"$content_href\">[link]%"]);
 370
 371                                         if ($row = $sth->fetch()) {
 372                                                 $num_found = $row['cid'];
 373
 374                                                 if ($num_found > 0) $article["force_catchup"] = true;
 375                                         }
 376                                 }
 377                         }
 378
 379                         $found = $this->inline_stuff($article, $doc, $xpath);
 380
 381                         $node = $doc->getElementsByTagName('body')->item(0);
 382
 383                         if ($node && $found) {
 384                                 $article["content"] = $doc->saveHTML($node);
 385                         } else if ($content_link) {
 386                                 $article = $this->readability($article, $content_link->getAttribute("href"), $doc, $xpath);
 387                         }
 388                 }
 389
 390                 return $article;
 391         }
 392
 393         function api_version() {
 394                 return 2;
 395         }
 396
 397         private function handle_as_video($doc, $entry, $source_stream, $poster_url = false, $debug = false) {
 398
 399                 _debug("handle_as_video: $source_stream", $debug);
 400
 401                 $video = $doc->createElement('video');
 402                 $video->setAttribute("autoplay", "1");
 403                 $video->setAttribute("controls", "1");
 404                 $video->setAttribute("loop", "1");
 405
 406                 if ($poster_url) $video->setAttribute("poster", $poster_url);
 407
 408                 $source = $doc->createElement('source');
 409                 $source->setAttribute("src", $source_stream);
 410                 $source->setAttribute("type", "video/mp4");
 411
 412                 $video->appendChild($source);
 413
 414                 $br = $doc->createElement('br');
 415                 $entry->parentNode->insertBefore($video, $entry);
 416                 $entry->parentNode->insertBefore($br, $entry);
 417
 418                 $img = $doc->createElement('img');
 419                 $img->setAttribute("src",
 420                         "data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D");
 421
 422                 $entry->parentNode->insertBefore($img, $entry);
 423         }
 424
 425         function testurl() {
 426                 $url = htmlspecialchars($_REQUEST["url"]);
 427
 428                 header("Content-type: text/plain");
 429
 430                 print "URL: $url\n";
 431
 432                 $doc = new DOMDocument();
 433                 @$doc->loadHTML("<html><body><a href=\"$url\">[link]</a></body>");
 434                 $xpath = new DOMXPath($doc);
 435
 436                 $found = $this->inline_stuff([], $doc, $xpath, true);
 437
 438                 print "Inline result: $found\n";
 439
 440                 if (!$found) {
 441                         print "\nReadability result:\n";
 442
 443                         $article = $this->readability([], $url, $doc, $xpath, true);
 444
 445                         print_r($article);
 446                 } else {
 447                         print "\nResulting HTML:\n";
 448
 449                         print $doc->saveHTML();
 450                 }
 451         }
 452
 453         private function get_header($url, $useragent = SELF_USER_AGENT, $header) {
 454                 $ret = false;
 455
 456                 if (function_exists("curl_init") && !defined("NO_CURL")) {
 457                         $ch = curl_init($url);
 458                         curl_setopt($ch, CURLOPT_TIMEOUT, 5);
 459                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 460                         curl_setopt($ch, CURLOPT_HEADER, true);
 461                         curl_setopt($ch, CURLOPT_NOBODY, true);
 462                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, !ini_get("open_basedir"));
 463                         curl_setopt($ch, CURLOPT_USERAGENT, $useragent);
 464
 465                         @curl_exec($ch);
 466                         $ret = curl_getinfo($ch, $header);
 467                 }
 468
 469                 return $ret;
 470         }
 471
 472         private function get_content_type($url, $useragent = SELF_USER_AGENT) {
 473                 return $this->get_header($url, $useragent, CURLINFO_CONTENT_TYPE);
 474         }
 475
 476         private function get_location($url, $useragent = SELF_USER_AGENT) {
 477                 return $this->get_header($url, $useragent, CURLINFO_EFFECTIVE_URL);
 478         }
 479
 480         /**
 481          * @SuppressWarnings(PHPMD.UnusedFormalParameter)
 482          */
 483         private function readability($article, $url, $doc, $xpath, $debug = false) {
 484
 485                 if (!defined('NO_CURL') && function_exists("curl_init") && $this->host->get($this, "enable_readability") &&
 486                         mb_strlen(strip_tags($article["content"])) <= 150) {
 487
 488                         // do not try to embed posts linking back to other reddit posts
 489                         // readability.php requires PHP 5.6
 490                         if ($url &&     strpos($url, "reddit.com") === FALSE && version_compare(PHP_VERSION, '5.6.0', '>=')) {
 491
 492                                 /* link may lead to a huge video file or whatever, we need to check content type before trying to
 493                                 parse it which p much requires curl */
 494
 495                                 $useragent_compat = "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)";
 496
 497                                 $content_type = $this->get_content_type($url, $useragent_compat);
 498
 499                                 if ($content_type && strpos($content_type, "text/html") !== FALSE) {
 500
 501                                         $tmp = fetch_file_contents(["url" => $url,
 502                                                 "useragent" => $useragent_compat,
 503                                                 "http_accept" => "text/html"]);
 504
 505                                         if ($debug) _debug("tmplen: " . mb_strlen($tmp));
 506
 507                                         if ($tmp && mb_strlen($tmp) < 1024 * 500) {
 508
 509                                                 $r = new Readability(new Configuration());
 510
 511                                                 try {
 512                                                         if ($r->parse($tmp)) {
 513
 514                                                                 $tmpxpath = new DOMXPath($r->getDOMDocument());
 515
 516                                                                 $entries = $tmpxpath->query('(//a[@href]|//img[@src])');
 517
 518                                                                 foreach ($entries as $entry) {
 519                                                                         if ($entry->hasAttribute("href")) {
 520                                                                                 $entry->setAttribute("href",
 521                                                                                         rewrite_relative_url($url, $entry->getAttribute("href")));
 522
 523                                                                         }
 524
 525                                                                         if ($entry->hasAttribute("src")) {
 526                                                                                 $entry->setAttribute("src",
 527                                                                                         rewrite_relative_url($url, $entry->getAttribute("src")));
 528
 529                                                                         }
 530
 531                                                                 }
 532
 533                                                                 $article["content"] = $r->getContent() . "<hr/>" . $article["content"];
 534                                                         }
 535                                                 } catch (Exception $e) {
 536                                                         //
 537                                                 }
 538                                         }
 539                                 }
 540                         }
 541                 }
 542
 543                 return $article;
 544         }
 545 }