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
  99                                 if (preg_match("/^https?:\/\/twitter.com\/(.*?)\/status\/(.*)/", $entry->getAttribute("href"), $matches)) {
 100                                         _debug("handling as twitter: " . $matches[1] . " " . $matches[2], $debug);
 101
 102                                         $oembed_result = fetch_file_contents("https://publish.twitter.com/oembed?url=" . urlencode($entry->getAttribute("href")));
 103
 104                                         if ($oembed_result) {
 105                                                 $oembed_result = json_decode($oembed_result, true);
 106
 107                                                 if ($oembed_result && isset($oembed_result["html"])) {
 108
 109                                                         $tmp = new DOMDocument();
 110                                                         if ($tmp->loadHTML($oembed_result["html"])) {
 111                                                                 $p = $doc->createElement("p");
 112
 113                                                                 $p->appendChild($doc->importNode(
 114                                                                         $tmp->getElementsByTagName("blockquote")->item(0), TRUE));
 115
 116                                                                 $br = $doc->createElement('br');
 117                                                                 $entry->parentNode->insertBefore($p, $entry);
 118                                                                 $entry->parentNode->insertBefore($br, $entry);
 119
 120                                                                 $found = 1;
 121                                                         }
 122                                                 }
 123                                         }
 124                                 }
 125
 126                                 if (preg_match("/\.gfycat.com\/([a-z]+)?(\.[a-z]+)$/i", $entry->getAttribute("href"), $matches)) {
 127                                         $entry->setAttribute("href", "http://www.gfycat.com/".$matches[1]);
 128                                 }
 129
 130                                 if (preg_match("/https?:\/\/(www\.)?gfycat.com\/([a-z]+)$/i", $entry->getAttribute("href"), $matches)) {
 131
 132                                         _debug("Handling as Gfycat", $debug);
 133
 134                                         $tmp = fetch_file_contents($entry->getAttribute("href"));
 135
 136                                         if ($tmp) {
 137                                                 $tmpdoc = new DOMDocument();
 138
 139                                                 if (@$tmpdoc->loadHTML($tmp)) {
 140                                                         $tmpxpath = new DOMXPath($tmpdoc);
 141
 142                                                         $source_meta = $tmpxpath->query("//meta[@name='twitter:player:stream' and contains(@content, '.mp4')]")->item(0);
 143                                                         $poster_meta = $tmpxpath->query("//meta[@property='og:image' and contains(@content,'thumbs.gfycat.com')]")->item(0);
 144
 145                                                         if ($source_meta) {
 146                                                                 $source_stream = $source_meta->getAttribute("content");
 147                                                                 $poster_url = false;
 148
 149                                                                 if ($source_stream) {
 150
 151                                                                         if ($poster_meta)
 152                                                                                 $poster_url = $poster_meta->getAttribute("content");
 153
 154                                                                         $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 155                                                                         $found = 1;
 156                                                                 }
 157                                                         }
 158                                                 }
 159                                         }
 160
 161                                 }
 162
 163                                 // imgur .gif -> .gifv
 164                                 if (preg_match("/i\.imgur\.com\/(.*?)\.gif$/i", $entry->getAttribute("href"))) {
 165                                         _debug("Handling as imgur gif (->gifv)", $debug);
 166
 167                                         $entry->setAttribute("href",
 168                                                 str_replace(".gif", ".gifv", $entry->getAttribute("href")));
 169                                 }
 170
 171                                 if (preg_match("/\.(gifv)$/i", $entry->getAttribute("href"))) {
 172                                         _debug("Handling as imgur gifv", $debug);
 173
 174                                         $source_stream = str_replace(".gifv", ".mp4", $entry->getAttribute("href"));
 175
 176                                         if (strpos($source_stream, "i.imgur.com") !== FALSE)
 177                                                 $poster_url = str_replace(".mp4", "h.jpg", $source_stream);
 178
 179                                         $this->handle_as_video($doc, $entry, $source_stream, $poster_url, $debug);
 180
 181                                         $found = true;
 182                                 }
 183
 184                                 $matches = array();
 185                                 if (preg_match("/youtube\.com\/v\/([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 186                                         preg_match("/youtube\.com\/.*?[\&\?]v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 187                                         preg_match("/youtube\.com\/watch\?v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 188                                         preg_match("/\/\/youtu.be\/([\w-]+)/", $entry->getAttribute("href"), $matches)) {
 189
 190                                         $vid_id = $matches[1];
 191
 192                                         _debug("Handling as youtube: $vid_id", $debug);
 193
 194                                         $iframe = $doc->createElement("iframe");
 195                                         $iframe->setAttribute("class", "youtube-player");
 196                                         $iframe->setAttribute("type", "text/html");
 197                                         $iframe->setAttribute("width", "640");
 198                                         $iframe->setAttribute("height", "385");
 199                                         $iframe->setAttribute("src", "https://www.youtube.com/embed/$vid_id");
 200                                         $iframe->setAttribute("allowfullscreen", "1");
 201                                         $iframe->setAttribute("frameborder", "0");
 202
 203                                         $br = $doc->createElement('br');
 204                                         $entry->parentNode->insertBefore($iframe, $entry);
 205                                         $entry->parentNode->insertBefore($br, $entry);
 206
 207                                         $found = true;
 208                                 }
 209
 210                                 if (preg_match("/\.(jpg|jpeg|gif|png)(\?[0-9][0-9]*)?$/i", $entry->getAttribute("href")) ||
 211                                         mb_strpos($entry->getAttribute("href"), "i.reddituploads.com") !== FALSE ||
 212                                         mb_strpos($this->get_content_type($entry->getAttribute("href")), "image/") !== FALSE) {
 213
 214                                         _debug("Handling as a picture", $debug);
 215
 216                                         $img = $doc->createElement('img');
 217                                         $img->setAttribute("src", $entry->getAttribute("href"));
 218
 219                                         $br = $doc->createElement('br');
 220                                         $entry->parentNode->insertBefore($img, $entry);
 221                                         $entry->parentNode->insertBefore($br, $entry);
 222
 223                                         $found = true;
 224                                 }
 225
 226                                 // linked albums & pages
 227
 228                                 if (preg_match("/^https?:\/\/(m\.)?imgur.com\/([^\.\/]+$)/", $entry->getAttribute("href"), $matches) ||
 229                                         preg_match("/^https?:\/\/(m\.)?imgur.com\/(a|album|gallery)\/[^\.]+$/", $entry->getAttribute("href"), $matches)) {
 230
 231                                         _debug("Handling as an imgur page/album/gallery", $debug);
 232
 233                                         $album_content = fetch_file_contents($entry->getAttribute("href"),
 234                                                 false, false, false, false, 10);
 235
 236                                         if ($album_content) {
 237                                                 $adoc = new DOMDocument();
 238
 239                                                 if (@$adoc->loadHTML($album_content)) {
 240                                                         $axpath = new DOMXPath($adoc);
 241
 242                                                         /*$aentries = $axpath->query("//meta[@property='og:image']");
 243                                                         $urls = array();
 244
 245                                                         foreach ($aentries as $aentry) {
 246
 247                                                                 _debug("og:image content=" . $aentry->getAttribute("content"), $debug);
 248
 249                                                                 $url = str_replace("?fb", "", $aentry->getAttribute("content"));
 250                                                                 $check_url = basename($url);
 251                                                                 $check_url = mb_substr($check_url, 0, strrpos($check_url, "."));
 252
 253                                                                 if (!in_array($check_url, $urls)) {
 254                                                                         $img = $doc->createElement('img');
 255                                                                         $img->setAttribute("src", $url);
 256                                                                         $entry->parentNode->insertBefore($doc->createElement('br'), $entry);
 257
 258                                                                         $br = $doc->createElement('br');
 259
 260                                                                         $entry->parentNode->insertBefore($img, $entry);
 261                                                                         $entry->parentNode->insertBefore($br, $entry);
 262
 263                                                                         array_push($urls, $check_url);
 264
 265                                                                         $found = true;
 266                                                                 }
 267                                                         } */
 268
 269                                                         //if ($debug) print_r($album_content);
 270
 271                                                         $aentries = $axpath->query("(//div[@class='post-image']/img[@src] | //a[@class='zoom']/img[@src] | //div[@class='video-elements']/source)");
 272                                                         $urls = [];
 273
 274                                                         foreach ($aentries as $aentry) {
 275
 276                                                                 $url = $aentry->getAttribute("src");
 277
 278                                                                 if (!in_array($url, $urls)) {
 279
 280                                                                         if ($aentry->tagName == "img") {
 281
 282                                                                                 $img = $doc->createElement('img');
 283                                                                                 $img->setAttribute("src", $url);
 284                                                                                 $entry->parentNode->insertBefore($doc->createElement('br'), $entry);
 285
 286                                                                                 $br = $doc->createElement('br');
 287
 288                                                                                 $entry->parentNode->insertBefore($img, $entry);
 289                                                                                 $entry->parentNode->insertBefore($br, $entry);
 290                                                                         } else if ($aentry->tagName == "source") {
 291
 292                                                                                 if (strpos($url, "i.imgur.com") !== FALSE)
 293                                                                                         $poster_url = str_replace(".mp4", "h.jpg", $url);
 294                                                                                 else
 295                                                                                         $poster_url = "";
 296
 297                                                                                 $this->handle_as_video($doc, $entry, $url, $poster_url);
 298
 299                                                                         }
 300
 301                                                                         array_push($urls, $url);
 302
 303                                                                         $found = true;
 304                                                                 }
 305
 306                                                         }
 307
 308                                                         if ($debug) print_r($urls);
 309                                                 }
 310                                         }
 311                                 }
 312
 313                                 // wtf is this even
 314                                 if (preg_match("/^https?:\/\/gyazo\.com\/([^\.\/]+$)/", $entry->getAttribute("href"), $matches)) {
 315                                         $img_id = $matches[1];
 316
 317                                         _debug("handling as gyazo: $img_id", $debug);
 318
 319                                         $img = $doc->createElement('img');
 320                                         $img->setAttribute("src", "https://i.gyazo.com/$img_id.jpg");
 321
 322                                         $br = $doc->createElement('br');
 323                                         $entry->parentNode->insertBefore($img, $entry);
 324                                         $entry->parentNode->insertBefore($br, $entry);
 325
 326                                         $found = true;
 327                                 }
 328                         }
 329
 330                         // remove tiny thumbnails
 331                         if ($entry->hasAttribute("src")) {
 332                                 if ($entry->parentNode && $entry->parentNode->parentNode) {
 333                                         $entry->parentNode->parentNode->removeChild($entry->parentNode);
 334                                 }
 335                         }
 336                 }
 337
 338                 return $found;
 339         }
 340
 341         function hook_article_filter($article) {
 342
 343                 if (strpos($article["link"], "reddit.com/r/") !== FALSE) {
 344                         $doc = new DOMDocument();
 345                         @$doc->loadHTML($article["content"]);
 346                         $xpath = new DOMXPath($doc);
 347
 348                         $content_link = $xpath->query("(//a[contains(., '[link]')])")->item(0);
 349
 350                         if ($this->host->get($this, "enable_content_dupcheck")) {
 351
 352                                 if ($content_link) {
 353                                         $content_href = db_escape_string($content_link->getAttribute("href"));
 354                                         $entry_guid = db_escape_string($article["guid_hashed"]);
 355                                         $owner_uid = $article["owner_uid"];
 356
 357                                         if (DB_TYPE == "pgsql") {
 358                                                 $interval_qpart = "date_entered < NOW() - INTERVAL '1 day'";
 359                                         } else {
 360                                                 $interval_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 1 DAY)";
 361                                         }
 362
 363                                         $result = db_query("SELECT COUNT(id) AS cid
 364                                                 FROM ttrss_entries, ttrss_user_entries WHERE
 365                                                         ref_id = id AND
 366                                                         $interval_qpart AND
 367                                                         guid != '$entry_guid' AND
 368                                                         owner_uid = '$owner_uid' AND
 369                                                         content LIKE '%href=\"$content_href\">[link]%'");
 370
 371                                         if ($result) {
 372                                                 $num_found = db_fetch_result($result, 0, "cid");
 373
 374                                                 if ($num_found > 0) $article["force_catchup"] = true;
 375                                         }
 376                                 }
 377                         }
 378
 379                         $found = $this->inline_stuff($article, $doc, $xpath);
 380
 381                         if (!defined('NO_CURL') && function_exists("curl_init") && !$found && $this->host->get($this, "enable_readability") &&
 382                                 mb_strlen(strip_tags($article["content"])) <= 150) {
 383
 384                                 if (!class_exists("Readability")) require_once(dirname(dirname(__DIR__)). "/lib/readability/Readability.php");
 385
 386                                 if ($content_link &&
 387                                         strpos($content_link->getAttribute("href"), "twitter.com") === FALSE &&
 388                                         strpos($content_link->getAttribute("href"), "youtube.com") === FALSE &&
 389                                         strpos($content_link->getAttribute("href"), "reddit.com") === FALSE) {
 390
 391                                         /* link may lead to a huge video file or whatever, we need to check content type before trying to
 392                                         parse it which p much requires curl */
 393
 394                                         $useragent_compat = "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)";
 395
 396                                         $content_type = $this->get_content_type($content_link->getAttribute("href"), $useragent_compat);
 397
 398                                         if ($content_type && strpos($content_type, "text/html") !== FALSE) {
 399
 400                                                 $tmp = fetch_file_contents(array("url" => $content_link->getAttribute("href"),
 401                                                         "useragent" => $useragent_compat));
 402
 403                                                 //_debug("tmplen: " . mb_strlen($tmp));
 404
 405                                                 if ($tmp && mb_strlen($tmp) < 1024 * 250) {
 406
 407                                                         $r = new Readability($tmp, $content_link->getAttribute("href"));
 408
 409                                                         if ($r->init()) {
 410
 411                                                                 $tmpxpath = new DOMXPath($r->dom);
 412
 413                                                                 $entries = $tmpxpath->query('(//a[@href]|//img[@src])');
 414
 415                                                                 foreach ($entries as $entry) {
 416                                                                         if ($entry->hasAttribute("href")) {
 417                                                                                 $entry->setAttribute("href",
 418                                                                                         rewrite_relative_url($content_link->getAttribute("href"), $entry->getAttribute("href")));
 419
 420                                                                         }
 421
 422                                                                         if ($entry->hasAttribute("src")) {
 423                                                                                 $entry->setAttribute("src",
 424                                                                                         rewrite_relative_url($content_link->getAttribute("href"), $entry->getAttribute("src")));
 425
 426                                                                         }
 427
 428                                                                 }
 429
 430                                                                 $article["content"] = $r->articleContent->innerHTML . "<hr/>" . $article["content"];
 431
 432                                                                 // prob not a very good idea (breaks wikipedia pages, etc) -
 433                                                                 // inliner currently is not really fit for any random web content
 434
 435                                                                 //$doc = new DOMDocument();
 436                                                                 //@$doc->loadHTML($article["content"]);
 437                                                                 //$xpath = new DOMXPath($doc);
 438                                                                 //$found = $this->inline_stuff($article, $doc, $xpath);
 439                                                         }
 440                                                 }
 441                                         }
 442                                 }
 443
 444                         }
 445
 446                         $node = $doc->getElementsByTagName('body')->item(0);
 447
 448                         if ($node && $found) {
 449                                 $article["content"] = $doc->saveXML($node);
 450                         }
 451                 }
 452
 453                 return $article;
 454         }
 455
 456         function api_version() {
 457                 return 2;
 458         }
 459
 460         private function handle_as_video($doc, $entry, $source_stream, $poster_url = false, $debug = false) {
 461
 462                 _debug("handle_as_video: $source_stream", $debug);
 463
 464                 $video = $doc->createElement('video');
 465                 $video->setAttribute("autoplay", "1");
 466                 $video->setAttribute("controls", "1");
 467                 $video->setAttribute("loop", "1");
 468
 469                 if ($poster_url) $video->setAttribute("poster", $poster_url);
 470
 471                 $source = $doc->createElement('source');
 472                 $source->setAttribute("src", $source_stream);
 473                 $source->setAttribute("type", "video/mp4");
 474
 475                 $video->appendChild($source);
 476
 477                 $br = $doc->createElement('br');
 478                 $entry->parentNode->insertBefore($video, $entry);
 479                 $entry->parentNode->insertBefore($br, $entry);
 480
 481                 $img = $doc->createElement('img');
 482                 $img->setAttribute("src",
 483                         "data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D");
 484
 485                 $entry->parentNode->insertBefore($img, $entry);
 486         }
 487
 488         function testurl() {
 489                 $url = htmlspecialchars($_REQUEST["url"]);
 490
 491                 header("Content-type: text/plain");
 492
 493                 print "URL: $url\n";
 494
 495                 $doc = new DOMDocument();
 496                 @$doc->loadHTML("<html><body><a href=\"$url\">[link]</a></body>");
 497                 $xpath = new DOMXPath($doc);
 498
 499                 print "Inline result: " . $this->inline_stuff([], $doc, $xpath, true) . "\n";
 500
 501                 print "\nResulting HTML:\n";
 502
 503                 print $doc->saveHTML();
 504
 505         }
 506
 507         private function get_content_type($url, $useragent = SELF_USER_AGENT) {
 508                 $content_type = false;
 509
 510                 if (function_exists("curl_init") && !defined("NO_CURL")) {
 511                         $ch = curl_init($url);
 512                         curl_setopt($ch, CURLOPT_TIMEOUT, 5);
 513                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 514                         curl_setopt($ch, CURLOPT_HEADER, true);
 515                         curl_setopt($ch, CURLOPT_NOBODY, true);
 516                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, !ini_get("open_basedir"));
 517                         curl_setopt($ch, CURLOPT_USERAGENT, $useragent);
 518
 519                         @$result = curl_exec($ch);
 520                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 521                 }
 522
 523                 return $content_type;
 524         }
 525 }
 526 ?>