plugins/af_redditimgur/init.php

   1 <?php
   2 class Af_RedditImgur extends Plugin {
   3         private $host;
   4
   5         function about() {
   6                 return array(1.0,
   7                         "Inline images (and other content) in Reddit RSS feeds",
   8                         "fox");
   9         }
  10
  11         function init($host) {
  12                 $this->host = $host;
  13
  14                 $host->add_hook($host::HOOK_ARTICLE_FILTER, $this);
  15                 $host->add_hook($host::HOOK_PREFS_TAB, $this);
  16         }
  17
  18         function hook_prefs_tab($args) {
  19                 if ($args != "prefFeeds") return;
  20
  21                 print "<div id=\"af_redditimgur_prefs\" dojoType=\"dijit.layout.AccordionPane\" title=\"".__('af_redditimgur settings')."\">";
  22
  23                 $enable_readability = $this->host->get($this, "enable_readability");
  24                 $enable_readability_checked = $enable_readability ? "checked" : "";
  25
  26                 print "<form dojoType=\"dijit.form.Form\">";
  27
  28                 print "<script type=\"dojo/method\" event=\"onSubmit\" args=\"evt\">
  29                         evt.preventDefault();
  30                         if (this.validate()) {
  31                                 console.log(dojo.objectToQuery(this.getValues()));
  32                                 new Ajax.Request('backend.php', {
  33                                         parameters: dojo.objectToQuery(this.getValues()),
  34                                         onComplete: function(transport) {
  35                                                 notify_info(transport.responseText);
  36                                         }
  37                                 });
  38                                 //this.reset();
  39                         }
  40                         </script>";
  41
  42                 print "<input dojoType=\"dijit.form.TextBox\" style=\"display : none\" name=\"op\" value=\"pluginhandler\">";
  43                 print "<input dojoType=\"dijit.form.TextBox\" style=\"display : none\" name=\"method\" value=\"save\">";
  44                 print "<input dojoType=\"dijit.form.TextBox\" style=\"display : none\" name=\"plugin\" value=\"af_redditimgur\">";
  45
  46                 print "<p>" . __("Uses Readability (full-text-rss) implementation by <a target='_blank' href='https://bitbucket.org/fivefilters/'>FiveFilters.org</a>");
  47                 print "<p/>";
  48
  49                 print "<input dojoType=\"dijit.form.CheckBox\" id=\"enable_readability\"
  50                         $enable_readability_checked name=\"enable_readability\">&nbsp;";
  51
  52                 print "<label for=\"enable_readability\">" . __("Extract missing content using Readability") . "</label>";
  53
  54                 print "<p><button dojoType=\"dijit.form.Button\" type=\"submit\">".
  55                         __("Save")."</button>";
  56
  57                 print "</form>";
  58
  59                 print "</div>";
  60         }
  61
  62         function save() {
  63                 $enable_readability = checkbox_to_sql_bool($_POST["enable_readability"]) == "true";
  64
  65                 $this->host->set($this, "enable_readability", $enable_readability);
  66
  67                 echo __("Configuration saved");
  68         }
  69
  70         private function inline_stuff($article, &$doc, $xpath) {
  71
  72                 $entries = $xpath->query('(//a[@href]|//img[@src])');
  73
  74                 $found = false;
  75
  76                 foreach ($entries as $entry) {
  77                         if ($entry->hasAttribute("href")) {
  78
  79                                 $matches = array();
  80
  81                                 if (preg_match("/\.gfycat.com\/([a-z]+)?(\.[a-z]+)$/i", $entry->getAttribute("href"), $matches)) {
  82                                         $entry->setAttribute("href", "http://www.gfycat.com/".$matches[1]);
  83                                 }
  84
  85                                 if (preg_match("/https?:\/\/(www\.)?gfycat.com\/([a-z]+)$/i", $entry->getAttribute("href"), $matches)) {
  86
  87                                         $tmp = fetch_file_contents($entry->getAttribute("href"));
  88
  89                                         if ($tmp) {
  90                                                 $tmpdoc = new DOMDocument();
  91
  92                                                 if (@$tmpdoc->loadHTML($tmp)) {
  93                                                         $tmpxpath = new DOMXPath($tmpdoc);
  94
  95                                                         $source_meta = $tmpxpath->query("//meta[@name='twitter:player:stream' and contains(@content, '.mp4')]")->item(0);
  96                                                         $poster_meta = $tmpxpath->query("//meta[@property='og:image' and contains(@content,'thumbs.gfycat.com')]")->item(0);
  97
  98                                                         if ($source_meta) {
  99                                                                 $source_stream = $source_meta->getAttribute("content");
 100                                                                 $poster_url = false;
 101
 102                                                                 if ($source_stream) {
 103
 104                                                                         if ($poster_meta)
 105                                                                                 $poster_url = $poster_meta->getAttribute("content");
 106
 107                                                                         $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 108                                                                         $found = 1;
 109                                                                 }
 110                                                         }
 111                                                 }
 112                                         }
 113
 114                                 }
 115
 116                                 // imgur .gif -> .gifv
 117                                 if (preg_match("/i\.imgur\.com\/(.*?)\.gif$/i", $entry->getAttribute("href"))) {
 118                                         $entry->setAttribute("href",
 119                                                 str_replace(".gif", ".gifv", $entry->getAttribute("href")));
 120                                 }
 121
 122                                 if (preg_match("/\.(gifv)$/i", $entry->getAttribute("href"))) {
 123
 124                                         $source_stream = str_replace(".gifv", ".mp4", $entry->getAttribute("href"));
 125
 126                                         if (strpos($source_stream, "i.imgur.com") !== FALSE)
 127                                                 $poster_url = str_replace(".mp4", "h.jpg", $source_stream);
 128
 129                                         $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 130
 131                                         $found = true;
 132                                 }
 133
 134                                 $matches = array();
 135                                 if (preg_match("/\.youtube\.com\/v\/([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 136                                         preg_match("/\.youtube\.com\/.*?[\&\?]v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 137                                         preg_match("/\.youtube\.com\/watch\?v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 138                                         preg_match("/\/\/youtu.be\/([\w-]+)/", $entry->getAttribute("href"), $matches)) {
 139
 140                                         $vid_id = $matches[1];
 141
 142                                         $iframe = $doc->createElement("iframe");
 143                                         $iframe->setAttribute("class", "youtube-player");
 144                                         $iframe->setAttribute("type", "text/html");
 145                                         $iframe->setAttribute("width", "640");
 146                                         $iframe->setAttribute("height", "385");
 147                                         $iframe->setAttribute("src", "https://www.youtube.com/embed/$vid_id");
 148                                         $iframe->setAttribute("allowfullscreen", "1");
 149                                         $iframe->setAttribute("frameborder", "0");
 150
 151                                         $br = $doc->createElement('br');
 152                                         $entry->parentNode->insertBefore($iframe, $entry);
 153                                         $entry->parentNode->insertBefore($br, $entry);
 154
 155                                         $found = true;
 156                                 }
 157
 158                                 if (preg_match("/\.(jpg|jpeg|gif|png)(\?[0-9][0-9]*)?$/i", $entry->getAttribute("href"))) {
 159                                         $img = $doc->createElement('img');
 160                                         $img->setAttribute("src", $entry->getAttribute("href"));
 161
 162                                         $br = $doc->createElement('br');
 163                                         $entry->parentNode->insertBefore($img, $entry);
 164                                         $entry->parentNode->insertBefore($br, $entry);
 165
 166                                         $found = true;
 167                                 }
 168
 169                                 // linked albums & pages
 170
 171                                 if (preg_match("/^https?:\/\/(m\.)?imgur.com\/([^\.\/]+$)/", $entry->getAttribute("href"), $matches) ||
 172                                         preg_match("/^https?:\/\/imgur.com\/(a|album|gallery)\/[^\.]+$/", $entry->getAttribute("href"), $matches)) {
 173
 174                                         $album_content = fetch_file_contents($entry->getAttribute("href"),
 175                                                 false, false, false, false, 10);
 176
 177                                         if ($album_content) {
 178                                                 $adoc = new DOMDocument();
 179
 180                                                 if (@$adoc->loadHTML($album_content)) {
 181                                                         $axpath = new DOMXPath($adoc);
 182                                                         $aentries = $axpath->query("//meta[@property='og:image']");
 183                                                         $urls = array();
 184
 185                                                         foreach ($aentries as $aentry) {
 186
 187                                                                 $url = str_replace("?fb", "", $aentry->getAttribute("content"));
 188                                                                 $check_url = basename($url);
 189                                                                 $check_url = mb_substr($check_url, 0, strrpos($check_url, "."));
 190
 191                                                                 if (!in_array($check_url, $urls)) {
 192                                                                         $img = $doc->createElement('img');
 193                                                                         $img->setAttribute("src", $url);
 194                                                                         $entry->parentNode->insertBefore($doc->createElement('br'), $entry);
 195
 196                                                                         $br = $doc->createElement('br');
 197
 198                                                                         $entry->parentNode->insertBefore($img, $entry);
 199                                                                         $entry->parentNode->insertBefore($br, $entry);
 200
 201                                                                         array_push($urls, $check_url);
 202
 203                                                                         $found = true;
 204                                                                 }
 205                                                         }
 206                                                 }
 207                                         }
 208                                 }
 209
 210                                 // wtf is this even
 211                                 if (preg_match("/^https?:\/\/gyazo\.com\/([^\.\/]+$)/", $entry->getAttribute("href"), $matches)) {
 212                                         $img_id = $matches[1];
 213
 214                                         $img = $doc->createElement('img');
 215                                         $img->setAttribute("src", "https://i.gyazo.com/$img_id.jpg");
 216
 217                                         $br = $doc->createElement('br');
 218                                         $entry->parentNode->insertBefore($img, $entry);
 219                                         $entry->parentNode->insertBefore($br, $entry);
 220
 221                                         $found = true;
 222                                 }
 223                         }
 224
 225                         // remove tiny thumbnails
 226                         if ($entry->hasAttribute("src")) {
 227                                 if ($entry->parentNode && $entry->parentNode->parentNode) {
 228                                         $entry->parentNode->parentNode->removeChild($entry->parentNode);
 229                                 }
 230                         }
 231                 }
 232
 233                 return $found;
 234         }
 235
 236         function hook_article_filter($article) {
 237
 238                 if (strpos($article["link"], "reddit.com/r/") !== FALSE) {
 239                         $doc = new DOMDocument();
 240                         @$doc->loadHTML($article["content"]);
 241                         $xpath = new DOMXPath($doc);
 242
 243                         $content_link = $xpath->query("(//a[contains(., '[link]')])")->item(0);
 244
 245                         $found = $this->inline_stuff($article, $doc, $xpath);
 246
 247                         if (function_exists("curl_init") && !$found && $this->host->get($this, "enable_readability") &&
 248                                 mb_strlen(strip_tags($article["content"])) <= 150) {
 249
 250                                 if (!class_exists("Readability")) require_once(dirname(dirname(__DIR__)). "/lib/readability/Readability.php");
 251
 252                                 if ($content_link &&
 253                                         strpos($content_link->getAttribute("href"), "twitter.com") === FALSE &&
 254                                         strpos($content_link->getAttribute("href"), "youtube.com") === FALSE &&
 255                                         strpos($content_link->getAttribute("href"), "reddit.com") === FALSE) {
 256
 257                                         /* link may lead to a huge video file or whatever, we need to check content type before trying to
 258                                         parse it which p much requires curl */
 259
 260                                         $ch = curl_init($content_link->getAttribute("href"));
 261                                         curl_setopt($ch, CURLOPT_TIMEOUT, 5);
 262                                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 263                                         curl_setopt($ch, CURLOPT_HEADER, true);
 264                                         curl_setopt($ch, CURLOPT_NOBODY, true);
 265                                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION,
 266                                                 !ini_get("safe_mode") && !ini_get("open_basedir"));
 267                                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 268
 269                                         @$result = curl_exec($ch);
 270                                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 271
 272                                         if ($content_type && strpos($content_type, "text/html") !== FALSE) {
 273
 274                                                 $tmp = fetch_file_contents($content_link->getAttribute("href"));
 275
 276                                                 //_debug("tmplen: " . mb_strlen($tmp));
 277
 278                                                 if ($tmp && mb_strlen($tmp) < 65535 * 4) {
 279
 280                                                         $r = new Readability($tmp, $content_link->getAttribute("href"));
 281
 282                                                         if ($r->init()) {
 283
 284                                                                 $tmpxpath = new DOMXPath($r->dom);
 285
 286                                                                 $entries = $tmpxpath->query('(//a[@href]|//img[@src])');
 287
 288                                                                 foreach ($entries as $entry) {
 289                                                                         if ($entry->hasAttribute("href")) {
 290                                                                                 $entry->setAttribute("href",
 291                                                                                         rewrite_relative_url($content_link->getAttribute("href"), $entry->getAttribute("href")));
 292
 293                                                                         }
 294
 295                                                                         if ($entry->hasAttribute("src")) {
 296                                                                                 $entry->setAttribute("src",
 297                                                                                         rewrite_relative_url($content_link->getAttribute("href"), $entry->getAttribute("src")));
 298
 299                                                                         }
 300
 301                                                                 }
 302
 303                                                                 $article["content"] = $r->articleContent->innerHTML . "<hr/>" . $article["content"];
 304
 305                                                                 // prob not a very good idea (breaks wikipedia pages, etc) -
 306                                                                 // inliner currently is not really fit for any random web content
 307
 308                                                                 //$doc = new DOMDocument();
 309                                                                 //@$doc->loadHTML($article["content"]);
 310                                                                 //$xpath = new DOMXPath($doc);
 311                                                                 //$found = $this->inline_stuff($article, $doc, $xpath);
 312                                                         }
 313                                                 }
 314                                         }
 315                                 }
 316
 317                         }
 318
 319                         $node = $doc->getElementsByTagName('body')->item(0);
 320
 321                         if ($node && $found) {
 322                                 $article["content"] = $doc->saveXML($node);
 323                         }
 324                 }
 325
 326                 return $article;
 327         }
 328
 329         function api_version() {
 330                 return 2;
 331         }
 332
 333         private function handle_as_video($doc, $entry, $source_stream, $poster_url = false) {
 334
 335                 $video = $doc->createElement('video');
 336                 $video->setAttribute("autoplay", "1");
 337                 $video->setAttribute("controls", "1");
 338                 $video->setAttribute("loop", "1");
 339
 340                 if ($poster_url) $video->setAttribute("poster", $poster_url);
 341
 342                 $source = $doc->createElement('source');
 343                 $source->setAttribute("src", $source_stream);
 344                 $source->setAttribute("type", "video/mp4");
 345
 346                 $video->appendChild($source);
 347
 348                 $br = $doc->createElement('br');
 349                 $entry->parentNode->insertBefore($video, $entry);
 350                 $entry->parentNode->insertBefore($br, $entry);
 351
 352                 $img = $doc->createElement('img');
 353                 $img->setAttribute("src",
 354                         "data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D");
 355
 356                 $entry->parentNode->insertBefore($img, $entry);
 357         }
 358 }
 359 ?>