plugins/af_redditimgur/init.php

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