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('<?xml encoding="utf-8" ?>' . $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_node = $tmpxpath->query("//video[contains(@class,'share-video')]//source[contains(@src, '.mp4')]")->item(0);
 142                                                         $poster_node = $tmpxpath->query("//video[contains(@class,'share-video') and @poster]")->item(0);
 143
 144                                                         if ($source_node && $poster_node) {
 145                                                                 $source_stream = $source_node->getAttribute("src");
 146                                                                 $poster_url = $poster_node->getAttribute("poster");
 147
 148                                                                 $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 149                                                                 $found = 1;
 150                                                         }
 151                                                 }
 152                                         }
 153                                 }
 154
 155                                 // imgur .gif -> .gifv
 156                                 if (!$found && preg_match("/i\.imgur\.com\/(.*?)\.gif$/i", $entry->getAttribute("href"))) {
 157                                         _debug("Handling as imgur gif (->gifv)", $debug);
 158
 159                                         $entry->setAttribute("href",
 160                                                 str_replace(".gif", ".gifv", $entry->getAttribute("href")));
 161                                 }
 162
 163                                 if (!$found && preg_match("/\.(gifv|mp4)$/i", $entry->getAttribute("href"))) {
 164                                         _debug("Handling as imgur gifv", $debug);
 165
 166                                         $source_stream = str_replace(".gifv", ".mp4", $entry->getAttribute("href"));
 167
 168                                         if (strpos($source_stream, "imgur.com") !== FALSE)
 169                                                 $poster_url = str_replace(".mp4", "h.jpg", $source_stream);
 170
 171                                         $this->handle_as_video($doc, $entry, $source_stream, $poster_url, $debug);
 172
 173                                         $found = true;
 174                                 }
 175
 176                                 $matches = array();
 177                                 if (!$found && preg_match("/youtube\.com\/v\/([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 178                                         preg_match("/youtube\.com\/.*?[\&\?]v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 179                                         preg_match("/youtube\.com\/watch\?v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 180                                         preg_match("/\/\/youtu.be\/([\w-]+)/", $entry->getAttribute("href"), $matches)) {
 181
 182                                         $vid_id = $matches[1];
 183
 184                                         _debug("Handling as youtube: $vid_id", $debug);
 185
 186                                         $iframe = $doc->createElement("iframe");
 187                                         $iframe->setAttribute("class", "youtube-player");
 188                                         $iframe->setAttribute("type", "text/html");
 189                                         $iframe->setAttribute("width", "640");
 190                                         $iframe->setAttribute("height", "385");
 191                                         $iframe->setAttribute("src", "https://www.youtube.com/embed/$vid_id");
 192                                         $iframe->setAttribute("allowfullscreen", "1");
 193                                         $iframe->setAttribute("frameborder", "0");
 194
 195                                         $br = $doc->createElement('br');
 196                                         $entry->parentNode->insertBefore($iframe, $entry);
 197                                         $entry->parentNode->insertBefore($br, $entry);
 198
 199                                         $found = true;
 200                                 }
 201
 202                                 if (!$found && preg_match("/\.(jpg|jpeg|gif|png)(\?[0-9][0-9]*)?$/i", $entry->getAttribute("href")) ||
 203                                         mb_strpos($entry->getAttribute("href"), "i.reddituploads.com") !== FALSE ||
 204                                         mb_strpos($this->get_content_type($entry->getAttribute("href")), "image/") !== FALSE) {
 205
 206                                         _debug("Handling as a picture", $debug);
 207
 208                                         $img = $doc->createElement('img');
 209                                         $img->setAttribute("src", $entry->getAttribute("href"));
 210
 211                                         $br = $doc->createElement('br');
 212                                         $entry->parentNode->insertBefore($img, $entry);
 213                                         $entry->parentNode->insertBefore($br, $entry);
 214
 215                                         $found = true;
 216                                 }
 217
 218                                 // linked albums & pages
 219
 220                                 if (!$found && preg_match("/^https?:\/\/(m\.)?imgur.com\/([^\.\/]+$)/", $entry->getAttribute("href"), $matches) ||
 221                                         preg_match("/^https?:\/\/(m\.)?imgur.com\/(a|album|gallery)\/[^\.]+$/", $entry->getAttribute("href"), $matches)) {
 222
 223                                         _debug("Handling as an imgur page/album/gallery", $debug);
 224
 225                                         $album_content = fetch_file_contents($entry->getAttribute("href"),
 226                                                 false, false, false, false, 10);
 227
 228                                         if ($album_content) {
 229                                                 $adoc = new DOMDocument();
 230
 231                                                 if (@$adoc->loadHTML($album_content)) {
 232                                                         $axpath = new DOMXPath($adoc);
 233
 234                                                         $aentries = $axpath->query("(//div[@class='post-image']/img[@src] | //a[@class='zoom']/img[@src] | //div[@class='video-elements']/source)");
 235                                                         $urls = [];
 236
 237                                                         foreach ($aentries as $aentry) {
 238
 239                                                                 $url = $aentry->getAttribute("src");
 240
 241                                                                 if (!in_array($url, $urls)) {
 242
 243                                                                         if ($aentry->tagName == "img") {
 244
 245                                                                                 $img = $doc->createElement('img');
 246                                                                                 $img->setAttribute("src", $url);
 247                                                                                 $entry->parentNode->insertBefore($doc->createElement('br'), $entry);
 248
 249                                                                                 $br = $doc->createElement('br');
 250
 251                                                                                 $entry->parentNode->insertBefore($img, $entry);
 252                                                                                 $entry->parentNode->insertBefore($br, $entry);
 253                                                                         } else if ($aentry->tagName == "source") {
 254
 255                                                                                 if (strpos($url, "imgur.com") !== FALSE)
 256                                                                                         $poster_url = str_replace(".mp4", "h.jpg", $url);
 257                                                                                 else
 258                                                                                         $poster_url = "";
 259
 260                                                                                 $this->handle_as_video($doc, $entry, $url, $poster_url);
 261
 262                                                                         }
 263
 264                                                                         array_push($urls, $url);
 265
 266                                                                         $found = true;
 267                                                                 }
 268
 269                                                         }
 270
 271                                                         if ($debug) print_r($urls);
 272                                                 }
 273                                         }
 274                                 }
 275
 276                                 // wtf is this even
 277                                 if (!$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                                         $found = true;
 290                                 }
 291                         }
 292
 293                         // remove tiny thumbnails
 294                         if ($entry->hasAttribute("src")) {
 295                                 if ($entry->parentNode && $entry->parentNode->parentNode) {
 296                                         $entry->parentNode->parentNode->removeChild($entry->parentNode);
 297                                 }
 298                         }
 299                 }
 300
 301                 return $found;
 302         }
 303
 304         function hook_article_filter($article) {
 305
 306                 if (strpos($article["link"], "reddit.com/r/") !== FALSE) {
 307                         $doc = new DOMDocument();
 308                         @$doc->loadHTML($article["content"]);
 309                         $xpath = new DOMXPath($doc);
 310
 311                         $content_link = $xpath->query("(//a[contains(., '[link]')])")->item(0);
 312
 313                         if ($this->host->get($this, "enable_content_dupcheck")) {
 314
 315                                 if ($content_link) {
 316                                         $content_href = db_escape_string($content_link->getAttribute("href"));
 317                                         $entry_guid = db_escape_string($article["guid_hashed"]);
 318                                         $owner_uid = $article["owner_uid"];
 319
 320                                         if (DB_TYPE == "pgsql") {
 321                                                 $interval_qpart = "date_entered < NOW() - INTERVAL '1 day'";
 322                                         } else {
 323                                                 $interval_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 1 DAY)";
 324                                         }
 325
 326                                         $result = db_query("SELECT COUNT(id) AS cid
 327                                                 FROM ttrss_entries, ttrss_user_entries WHERE
 328                                                         ref_id = id AND
 329                                                         $interval_qpart AND
 330                                                         guid != '$entry_guid' AND
 331                                                         owner_uid = '$owner_uid' AND
 332                                                         content LIKE '%href=\"$content_href\">[link]%'");
 333
 334                                         if ($result) {
 335                                                 $num_found = db_fetch_result($result, 0, "cid");
 336
 337                                                 if ($num_found > 0) $article["force_catchup"] = true;
 338                                         }
 339                                 }
 340                         }
 341
 342                         $found = $this->inline_stuff($article, $doc, $xpath);
 343
 344                         $node = $doc->getElementsByTagName('body')->item(0);
 345
 346                         if ($node && $found) {
 347                                 $article["content"] = $doc->saveXML($node);
 348                         } else if ($content_link) {
 349                                 $article = $this->readability($article, $content_link->getAttribute("href"), $doc, $xpath);
 350                         }
 351                 }
 352
 353                 return $article;
 354         }
 355
 356         function api_version() {
 357                 return 2;
 358         }
 359
 360         private function handle_as_video($doc, $entry, $source_stream, $poster_url = false, $debug = false) {
 361
 362                 _debug("handle_as_video: $source_stream", $debug);
 363
 364                 $video = $doc->createElement('video');
 365                 $video->setAttribute("autoplay", "1");
 366                 $video->setAttribute("controls", "1");
 367                 $video->setAttribute("loop", "1");
 368
 369                 if ($poster_url) $video->setAttribute("poster", $poster_url);
 370
 371                 $source = $doc->createElement('source');
 372                 $source->setAttribute("src", $source_stream);
 373                 $source->setAttribute("type", "video/mp4");
 374
 375                 $video->appendChild($source);
 376
 377                 $br = $doc->createElement('br');
 378                 $entry->parentNode->insertBefore($video, $entry);
 379                 $entry->parentNode->insertBefore($br, $entry);
 380
 381                 $img = $doc->createElement('img');
 382                 $img->setAttribute("src",
 383                         "data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D");
 384
 385                 $entry->parentNode->insertBefore($img, $entry);
 386         }
 387
 388         function testurl() {
 389                 $url = htmlspecialchars($_REQUEST["url"]);
 390
 391                 header("Content-type: text/plain");
 392
 393                 print "URL: $url\n";
 394
 395                 $doc = new DOMDocument();
 396                 @$doc->loadHTML("<html><body><a href=\"$url\">[link]</a></body>");
 397                 $xpath = new DOMXPath($doc);
 398
 399                 $found = $this->inline_stuff([], $doc, $xpath, true);
 400
 401                 print "Inline result: $found\n";
 402
 403                 if (!$found) {
 404                         print "\nReadability result:\n";
 405
 406                         $article = $this->readability([], $url, $doc, $xpath, true);
 407
 408                         print_r($article);
 409                 } else {
 410                         print "\nResulting HTML:\n";
 411
 412                         print $doc->saveHTML();
 413                 }
 414         }
 415
 416         private function get_content_type($url, $useragent = SELF_USER_AGENT) {
 417                 $content_type = false;
 418
 419                 if (function_exists("curl_init") && !defined("NO_CURL")) {
 420                         $ch = curl_init($url);
 421                         curl_setopt($ch, CURLOPT_TIMEOUT, 5);
 422                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 423                         curl_setopt($ch, CURLOPT_HEADER, true);
 424                         curl_setopt($ch, CURLOPT_NOBODY, true);
 425                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, !ini_get("open_basedir"));
 426                         curl_setopt($ch, CURLOPT_USERAGENT, $useragent);
 427
 428                         @$result = curl_exec($ch);
 429                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 430                 }
 431
 432                 return $content_type;
 433         }
 434
 435         private function readability($article, $url, $doc, $xpath, $debug = false) {
 436
 437                 if (!defined('NO_CURL') && function_exists("curl_init") && $this->host->get($this, "enable_readability") &&
 438                         mb_strlen(strip_tags($article["content"])) <= 150) {
 439
 440                         if (!class_exists("Readability")) require_once(dirname(dirname(__DIR__)). "/lib/readability/Readability.php");
 441
 442                         if ($url &&
 443                                 strpos($url, "twitter.com") === FALSE &&
 444                                 strpos($url, "youtube.com") === FALSE &&
 445                                 strpos($url, "reddit.com") === FALSE) {
 446
 447                                 /* link may lead to a huge video file or whatever, we need to check content type before trying to
 448                                 parse it which p much requires curl */
 449
 450                                 $useragent_compat = "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)";
 451
 452                                 $content_type = $this->get_content_type($url, $useragent_compat);
 453
 454                                 if ($content_type && strpos($content_type, "text/html") !== FALSE) {
 455
 456                                         $tmp = fetch_file_contents(array("url" => $url,
 457                                                 "useragent" => $useragent_compat));
 458
 459                                         if ($debug) _debug("tmplen: " . mb_strlen($tmp));
 460
 461                                         if ($tmp && mb_strlen($tmp) < 1024 * 500) {
 462
 463                                                 $r = new Readability($tmp, $url);
 464
 465                                                 if ($r->init()) {
 466
 467                                                         $tmpxpath = new DOMXPath($r->dom);
 468
 469                                                         $entries = $tmpxpath->query('(//a[@href]|//img[@src])');
 470
 471                                                         foreach ($entries as $entry) {
 472                                                                 if ($entry->hasAttribute("href")) {
 473                                                                         $entry->setAttribute("href",
 474                                                                                 rewrite_relative_url($url, $entry->getAttribute("href")));
 475
 476                                                                 }
 477
 478                                                                 if ($entry->hasAttribute("src")) {
 479                                                                         $entry->setAttribute("src",
 480                                                                                 rewrite_relative_url($url, $entry->getAttribute("src")));
 481
 482                                                                 }
 483
 484                                                         }
 485
 486                                                         $article["content"] = $r->articleContent->innerHTML . "<hr/>" . $article["content"];
 487                                                 }
 488                                         }
 489                                 }
 490                         }
 491                 }
 492
 493                 return $article;
 494         }
 495 }
 496 ?>