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                                 $matches = array();
  97
  98                                 if (preg_match("/\.gfycat.com\/([a-z]+)?(\.[a-z]+)$/i", $entry->getAttribute("href"), $matches)) {
  99                                         $entry->setAttribute("href", "http://www.gfycat.com/".$matches[1]);
 100                                 }
 101
 102                                 if (preg_match("/https?:\/\/(www\.)?gfycat.com\/([a-z]+)$/i", $entry->getAttribute("href"), $matches)) {
 103
 104                                         _debug("Handling as Gfycat", $debug);
 105
 106                                         $tmp = fetch_file_contents($entry->getAttribute("href"));
 107
 108                                         if ($tmp) {
 109                                                 $tmpdoc = new DOMDocument();
 110
 111                                                 if (@$tmpdoc->loadHTML($tmp)) {
 112                                                         $tmpxpath = new DOMXPath($tmpdoc);
 113
 114                                                         $source_meta = $tmpxpath->query("//meta[@name='twitter:player:stream' and contains(@content, '.mp4')]")->item(0);
 115                                                         $poster_meta = $tmpxpath->query("//meta[@property='og:image' and contains(@content,'thumbs.gfycat.com')]")->item(0);
 116
 117                                                         if ($source_meta) {
 118                                                                 $source_stream = $source_meta->getAttribute("content");
 119                                                                 $poster_url = false;
 120
 121                                                                 if ($source_stream) {
 122
 123                                                                         if ($poster_meta)
 124                                                                                 $poster_url = $poster_meta->getAttribute("content");
 125
 126                                                                         $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 127                                                                         $found = 1;
 128                                                                 }
 129                                                         }
 130                                                 }
 131                                         }
 132
 133                                 }
 134
 135                                 // imgur .gif -> .gifv
 136                                 if (preg_match("/i\.imgur\.com\/(.*?)\.gif$/i", $entry->getAttribute("href"))) {
 137                                         _debug("Handling as imgur gif (->gifv)", $debug);
 138
 139                                         $entry->setAttribute("href",
 140                                                 str_replace(".gif", ".gifv", $entry->getAttribute("href")));
 141                                 }
 142
 143                                 if (preg_match("/\.(gifv)$/i", $entry->getAttribute("href"))) {
 144                                         _debug("Handling as imgur gifv", $debug);
 145
 146                                         $source_stream = str_replace(".gifv", ".mp4", $entry->getAttribute("href"));
 147
 148                                         if (strpos($source_stream, "i.imgur.com") !== FALSE)
 149                                                 $poster_url = str_replace(".mp4", "h.jpg", $source_stream);
 150
 151                                         $this->handle_as_video($doc, $entry, $source_stream, $poster_url, $debug);
 152
 153                                         $found = true;
 154                                 }
 155
 156                                 $matches = array();
 157                                 if (preg_match("/youtube\.com\/v\/([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 158                                         preg_match("/youtube\.com\/.*?[\&\?]v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 159                                         preg_match("/youtube\.com\/watch\?v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 160                                         preg_match("/\/\/youtu.be\/([\w-]+)/", $entry->getAttribute("href"), $matches)) {
 161
 162                                         $vid_id = $matches[1];
 163
 164                                         _debug("Handling as youtube: $vid_id", $debug);
 165
 166                                         $iframe = $doc->createElement("iframe");
 167                                         $iframe->setAttribute("class", "youtube-player");
 168                                         $iframe->setAttribute("type", "text/html");
 169                                         $iframe->setAttribute("width", "640");
 170                                         $iframe->setAttribute("height", "385");
 171                                         $iframe->setAttribute("src", "https://www.youtube.com/embed/$vid_id");
 172                                         $iframe->setAttribute("allowfullscreen", "1");
 173                                         $iframe->setAttribute("frameborder", "0");
 174
 175                                         $br = $doc->createElement('br');
 176                                         $entry->parentNode->insertBefore($iframe, $entry);
 177                                         $entry->parentNode->insertBefore($br, $entry);
 178
 179                                         $found = true;
 180                                 }
 181
 182                                 if (preg_match("/\.(jpg|jpeg|gif|png)(\?[0-9][0-9]*)?$/i", $entry->getAttribute("href")) ||
 183                                         mb_strpos($entry->getAttribute("href"), "i.reddituploads.com") !== FALSE ||
 184                                         mb_strpos($this->get_content_type($entry->getAttribute("href")), "image/") !== FALSE) {
 185
 186                                         _debug("Handling as a picture", $debug);
 187
 188                                         $img = $doc->createElement('img');
 189                                         $img->setAttribute("src", $entry->getAttribute("href"));
 190
 191                                         $br = $doc->createElement('br');
 192                                         $entry->parentNode->insertBefore($img, $entry);
 193                                         $entry->parentNode->insertBefore($br, $entry);
 194
 195                                         $found = true;
 196                                 }
 197
 198                                 // linked albums & pages
 199
 200                                 if (preg_match("/^https?:\/\/(m\.)?imgur.com\/([^\.\/]+$)/", $entry->getAttribute("href"), $matches) ||
 201                                         preg_match("/^https?:\/\/(m\.)?imgur.com\/(a|album|gallery)\/[^\.]+$/", $entry->getAttribute("href"), $matches)) {
 202
 203                                         _debug("Handling as an imgur page/album/gallery", $debug);
 204
 205                                         $album_content = fetch_file_contents($entry->getAttribute("href"),
 206                                                 false, false, false, false, 10);
 207
 208                                         if ($album_content) {
 209                                                 $adoc = new DOMDocument();
 210
 211                                                 if (@$adoc->loadHTML($album_content)) {
 212                                                         $axpath = new DOMXPath($adoc);
 213
 214                                                         /*$aentries = $axpath->query("//meta[@property='og:image']");
 215                                                         $urls = array();
 216
 217                                                         foreach ($aentries as $aentry) {
 218
 219                                                                 _debug("og:image content=" . $aentry->getAttribute("content"), $debug);
 220
 221                                                                 $url = str_replace("?fb", "", $aentry->getAttribute("content"));
 222                                                                 $check_url = basename($url);
 223                                                                 $check_url = mb_substr($check_url, 0, strrpos($check_url, "."));
 224
 225                                                                 if (!in_array($check_url, $urls)) {
 226                                                                         $img = $doc->createElement('img');
 227                                                                         $img->setAttribute("src", $url);
 228                                                                         $entry->parentNode->insertBefore($doc->createElement('br'), $entry);
 229
 230                                                                         $br = $doc->createElement('br');
 231
 232                                                                         $entry->parentNode->insertBefore($img, $entry);
 233                                                                         $entry->parentNode->insertBefore($br, $entry);
 234
 235                                                                         array_push($urls, $check_url);
 236
 237                                                                         $found = true;
 238                                                                 }
 239                                                         } */
 240
 241                                                         //if ($debug) print_r($album_content);
 242
 243                                                         $aentries = $axpath->query("(//div[@class='post-image']/img[@src] | //a[@class='zoom']/img[@src] | //div[@class='video-elements']/source)");
 244                                                         $urls = [];
 245
 246                                                         foreach ($aentries as $aentry) {
 247
 248                                                                 $url = $aentry->getAttribute("src");
 249
 250                                                                 if (!in_array($url, $urls)) {
 251
 252                                                                         if ($aentry->tagName == "img") {
 253
 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, $entry);
 262                                                                         } else if ($aentry->tagName == "source") {
 263
 264                                                                                 if (strpos($url, "i.imgur.com") !== FALSE)
 265                                                                                         $poster_url = str_replace(".mp4", "h.jpg", $url);
 266                                                                                 else
 267                                                                                         $poster_url = "";
 268
 269                                                                                 $this->handle_as_video($doc, $entry, $url, $poster_url);
 270
 271                                                                         }
 272
 273                                                                         array_push($urls, $url);
 274
 275                                                                         $found = true;
 276                                                                 }
 277
 278                                                         }
 279
 280                                                         if ($debug) print_r($urls);
 281                                                 }
 282                                         }
 283                                 }
 284
 285                                 // wtf is this even
 286                                 if (preg_match("/^https?:\/\/gyazo\.com\/([^\.\/]+$)/", $entry->getAttribute("href"), $matches)) {
 287                                         $img_id = $matches[1];
 288
 289                                         _debug("handling as gyazo: $img_id", $debug);
 290
 291                                         $img = $doc->createElement('img');
 292                                         $img->setAttribute("src", "https://i.gyazo.com/$img_id.jpg");
 293
 294                                         $br = $doc->createElement('br');
 295                                         $entry->parentNode->insertBefore($img, $entry);
 296                                         $entry->parentNode->insertBefore($br, $entry);
 297
 298                                         $found = true;
 299                                 }
 300                         }
 301
 302                         // remove tiny thumbnails
 303                         if ($entry->hasAttribute("src")) {
 304                                 if ($entry->parentNode && $entry->parentNode->parentNode) {
 305                                         $entry->parentNode->parentNode->removeChild($entry->parentNode);
 306                                 }
 307                         }
 308                 }
 309
 310                 return $found;
 311         }
 312
 313         function hook_article_filter($article) {
 314
 315                 if (strpos($article["link"], "reddit.com/r/") !== FALSE) {
 316                         $doc = new DOMDocument();
 317                         @$doc->loadHTML($article["content"]);
 318                         $xpath = new DOMXPath($doc);
 319
 320                         $content_link = $xpath->query("(//a[contains(., '[link]')])")->item(0);
 321
 322                         if ($this->host->get($this, "enable_content_dupcheck")) {
 323
 324                                 if ($content_link) {
 325                                         $content_href = db_escape_string($content_link->getAttribute("href"));
 326                                         $entry_guid = db_escape_string($article["guid_hashed"]);
 327                                         $owner_uid = $article["owner_uid"];
 328
 329                                         if (DB_TYPE == "pgsql") {
 330                                                 $interval_qpart = "date_entered < NOW() - INTERVAL '1 day'";
 331                                         } else {
 332                                                 $interval_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 1 DAY)";
 333                                         }
 334
 335                                         $result = db_query("SELECT COUNT(id) AS cid
 336                                                 FROM ttrss_entries, ttrss_user_entries WHERE
 337                                                         ref_id = id AND
 338                                                         $interval_qpart AND
 339                                                         guid != '$entry_guid' AND
 340                                                         owner_uid = '$owner_uid' AND
 341                                                         content LIKE '%href=\"$content_href\">[link]%'");
 342
 343                                         if ($result) {
 344                                                 $num_found = db_fetch_result($result, 0, "cid");
 345
 346                                                 if ($num_found > 0) $article["force_catchup"] = true;
 347                                         }
 348                                 }
 349                         }
 350
 351                         $found = $this->inline_stuff($article, $doc, $xpath);
 352
 353                         if (!defined('NO_CURL') && function_exists("curl_init") && !$found && $this->host->get($this, "enable_readability") &&
 354                                 mb_strlen(strip_tags($article["content"])) <= 150) {
 355
 356                                 if (!class_exists("Readability")) require_once(dirname(dirname(__DIR__)). "/lib/readability/Readability.php");
 357
 358                                 if ($content_link &&
 359                                         strpos($content_link->getAttribute("href"), "twitter.com") === FALSE &&
 360                                         strpos($content_link->getAttribute("href"), "youtube.com") === FALSE &&
 361                                         strpos($content_link->getAttribute("href"), "reddit.com") === FALSE) {
 362
 363                                         /* link may lead to a huge video file or whatever, we need to check content type before trying to
 364                                         parse it which p much requires curl */
 365
 366                                         $useragent_compat = "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)";
 367
 368                                         $content_type = $this->get_content_type($content_link->getAttribute("href"), $useragent_compat);
 369
 370                                         if ($content_type && strpos($content_type, "text/html") !== FALSE) {
 371
 372                                                 $tmp = fetch_file_contents(array("url" => $content_link->getAttribute("href"),
 373                                                         "useragent" => $useragent_compat));
 374
 375                                                 //_debug("tmplen: " . mb_strlen($tmp));
 376
 377                                                 if ($tmp && mb_strlen($tmp) < 1024 * 250) {
 378
 379                                                         $r = new Readability($tmp, $content_link->getAttribute("href"));
 380
 381                                                         if ($r->init()) {
 382
 383                                                                 $tmpxpath = new DOMXPath($r->dom);
 384
 385                                                                 $entries = $tmpxpath->query('(//a[@href]|//img[@src])');
 386
 387                                                                 foreach ($entries as $entry) {
 388                                                                         if ($entry->hasAttribute("href")) {
 389                                                                                 $entry->setAttribute("href",
 390                                                                                         rewrite_relative_url($content_link->getAttribute("href"), $entry->getAttribute("href")));
 391
 392                                                                         }
 393
 394                                                                         if ($entry->hasAttribute("src")) {
 395                                                                                 $entry->setAttribute("src",
 396                                                                                         rewrite_relative_url($content_link->getAttribute("href"), $entry->getAttribute("src")));
 397
 398                                                                         }
 399
 400                                                                 }
 401
 402                                                                 $article["content"] = $r->articleContent->innerHTML . "<hr/>" . $article["content"];
 403
 404                                                                 // prob not a very good idea (breaks wikipedia pages, etc) -
 405                                                                 // inliner currently is not really fit for any random web content
 406
 407                                                                 //$doc = new DOMDocument();
 408                                                                 //@$doc->loadHTML($article["content"]);
 409                                                                 //$xpath = new DOMXPath($doc);
 410                                                                 //$found = $this->inline_stuff($article, $doc, $xpath);
 411                                                         }
 412                                                 }
 413                                         }
 414                                 }
 415
 416                         }
 417
 418                         $node = $doc->getElementsByTagName('body')->item(0);
 419
 420                         if ($node && $found) {
 421                                 $article["content"] = $doc->saveXML($node);
 422                         }
 423                 }
 424
 425                 return $article;
 426         }
 427
 428         function api_version() {
 429                 return 2;
 430         }
 431
 432         private function handle_as_video($doc, $entry, $source_stream, $poster_url = false, $debug = false) {
 433
 434                 _debug("handle_as_video: $source_stream", $debug);
 435
 436                 $video = $doc->createElement('video');
 437                 $video->setAttribute("autoplay", "1");
 438                 $video->setAttribute("controls", "1");
 439                 $video->setAttribute("loop", "1");
 440
 441                 if ($poster_url) $video->setAttribute("poster", $poster_url);
 442
 443                 $source = $doc->createElement('source');
 444                 $source->setAttribute("src", $source_stream);
 445                 $source->setAttribute("type", "video/mp4");
 446
 447                 $video->appendChild($source);
 448
 449                 $br = $doc->createElement('br');
 450                 $entry->parentNode->insertBefore($video, $entry);
 451                 $entry->parentNode->insertBefore($br, $entry);
 452
 453                 $img = $doc->createElement('img');
 454                 $img->setAttribute("src",
 455                         "data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D");
 456
 457                 $entry->parentNode->insertBefore($img, $entry);
 458         }
 459
 460         function testurl() {
 461                 $url = htmlspecialchars($_REQUEST["url"]);
 462
 463                 header("Content-type: text/plain");
 464
 465                 print "URL: $url\n";
 466
 467                 $doc = new DOMDocument();
 468                 @$doc->loadHTML("<html><body><a href=\"$url\">[link]</a></body>");
 469                 $xpath = new DOMXPath($doc);
 470
 471                 print "Inline result: " . $this->inline_stuff([], $doc, $xpath, true) . "\n";
 472
 473                 print "\nResulting HTML:\n";
 474
 475                 print $doc->saveHTML();
 476
 477         }
 478
 479         private function get_content_type($url, $useragent = SELF_USER_AGENT) {
 480                 $content_type = false;
 481
 482                 if (function_exists("curl_init") && !defined("NO_CURL")) {
 483                         $ch = curl_init($url);
 484                         curl_setopt($ch, CURLOPT_TIMEOUT, 5);
 485                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 486                         curl_setopt($ch, CURLOPT_HEADER, true);
 487                         curl_setopt($ch, CURLOPT_NOBODY, true);
 488                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, !ini_get("open_basedir"));
 489                         curl_setopt($ch, CURLOPT_USERAGENT, $useragent);
 490
 491                         @$result = curl_exec($ch);
 492                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 493                 }
 494
 495                 return $content_type;
 496         }
 497 }
 498 ?>