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