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 "<h3>" . __("Global settings") . "</h3>";
  47
  48                 print_notice("Uses Readability (full-text-rss) implementation by <a target='_blank' href='https://bitbucket.org/fivefilters/'>FiveFilters.org</a>");
  49                 print "<p/>";
  50
  51                 print "<input dojoType=\"dijit.form.CheckBox\" id=\"enable_readability\"
  52                         $enable_readability_checked name=\"enable_readability\">&nbsp;";
  53
  54                 print "<label for=\"enable_readability\">" . __("Extract missing content using Readability") . "</label>";
  55
  56                 print "<p><button dojoType=\"dijit.form.Button\" type=\"submit\">".
  57                         __("Save")."</button>";
  58
  59                 print "</form>";
  60
  61                 print "</div>";
  62         }
  63
  64         function save() {
  65                 $enable_readability = checkbox_to_sql_bool($_POST["enable_readability"]) == "true";
  66
  67                 $this->host->set($this, "enable_readability", $enable_readability);
  68
  69                 echo __("Configuration saved");
  70         }
  71
  72         private function inline_stuff($article, &$doc, $xpath) {
  73
  74                 $entries = $xpath->query('(//a[@href]|//img[@src])');
  75
  76                 $found = false;
  77
  78                 foreach ($entries as $entry) {
  79                         if ($entry->hasAttribute("href")) {
  80
  81                                 $matches = array();
  82
  83                                 if (preg_match("/\.gfycat.com\/([a-z]+)?(\.[a-z]+)$/i", $entry->getAttribute("href"), $matches)) {
  84                                         $entry->setAttribute("href", "http://www.gfycat.com/".$matches[1]);
  85                                 }
  86
  87                                 if (preg_match("/https?:\/\/(www\.)?gfycat.com\/([a-z]+)$/i", $entry->getAttribute("href"), $matches)) {
  88
  89                                         $tmp = fetch_file_contents($entry->getAttribute("href"));
  90
  91                                         if ($tmp) {
  92                                                 $tmpdoc = new DOMDocument();
  93                                                 @$tmpdoc->loadHTML($tmp);
  94
  95                                                 if ($tmpdoc) {
  96                                                         $tmpxpath = new DOMXPath($tmpdoc);
  97
  98                                                         $source_meta = $tmpxpath->query("//meta[@property='og:video']")->item(0);
  99                                                         $poster_meta = $tmpxpath->query("//meta[@property='og:image' and contains(@content,'thumbs.gfycat.com')]")->item(0);
 100
 101                                                         if ($source_meta) {
 102                                                                 $source_stream = $source_meta->getAttribute("content");
 103                                                                 $poster_url = false;
 104
 105                                                                 if ($source_stream) {
 106
 107                                                                         if ($poster_meta)
 108                                                                                 $poster_url = $poster_meta->getAttribute("content");
 109
 110                                                                         $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 111                                                                         $found = 1;
 112                                                                 }
 113                                                         }
 114                                                 }
 115                                         }
 116
 117                                 }
 118
 119                                 // imgur .gif -> .gifv
 120                                 if (preg_match("/i\.imgur\.com\/(.*?)\.gif$/i", $entry->getAttribute("href"))) {
 121                                         $entry->setAttribute("href",
 122                                                 str_replace(".gif", ".gifv", $entry->getAttribute("href")));
 123                                 }
 124
 125                                 if (preg_match("/\.(gifv)$/i", $entry->getAttribute("href"))) {
 126
 127                                         $source_stream = str_replace(".gifv", ".mp4", $entry->getAttribute("href"));
 128
 129                                         if (strpos($source_stream, "i.imgur.com") !== FALSE)
 130                                                 $poster_url = str_replace(".mp4", "h.jpg", $source_stream);
 131
 132                                         $this->handle_as_video($doc, $entry, $source_stream, $poster_url);
 133
 134                                         $found = true;
 135                                 }
 136
 137                                 $matches = array();
 138                                 if (preg_match("/\.youtube\.com\/v\/([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 139                                         preg_match("/\.youtube\.com\/.*?[\&\?]v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 140                                         preg_match("/\.youtube\.com\/watch\?v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 141                                         preg_match("/\/\/youtu.be\/([\w-]+)/", $entry->getAttribute("href"), $matches)) {
 142
 143                                         $vid_id = $matches[1];
 144
 145                                         $iframe = $doc->createElement("iframe");
 146                                         $iframe->setAttribute("class", "youtube-player");
 147                                         $iframe->setAttribute("type", "text/html");
 148                                         $iframe->setAttribute("width", "640");
 149                                         $iframe->setAttribute("height", "385");
 150                                         $iframe->setAttribute("src", "https://www.youtube.com/embed/$vid_id");
 151                                         $iframe->setAttribute("allowfullscreen", "1");
 152                                         $iframe->setAttribute("frameborder", "0");
 153
 154                                         $br = $doc->createElement('br');
 155                                         $entry->parentNode->insertBefore($iframe, $entry);
 156                                         $entry->parentNode->insertBefore($br, $entry);
 157
 158                                         $found = true;
 159                                 }
 160
 161                                 if (preg_match("/\.(jpg|jpeg|gif|png)(\?[0-9][0-9]*)?$/i", $entry->getAttribute("href"))) {
 162                                         $img = $doc->createElement('img');
 163                                         $img->setAttribute("src", $entry->getAttribute("href"));
 164
 165                                         $br = $doc->createElement('br');
 166                                         $entry->parentNode->insertBefore($img, $entry);
 167                                         $entry->parentNode->insertBefore($br, $entry);
 168
 169                                         $found = true;
 170                                 }
 171
 172                                 // linked albums & pages
 173
 174                                 if (preg_match("/^https?:\/\/(m\.)?imgur.com\/([^\.\/]+$)/", $entry->getAttribute("href"), $matches) ||
 175                                         preg_match("/^https?:\/\/imgur.com\/(a|album|gallery)\/[^\.]+$/", $entry->getAttribute("href"), $matches)) {
 176
 177                                         $album_content = fetch_file_contents($entry->getAttribute("href"),
 178                                                 false, false, false, false, 10);
 179
 180                                         if ($album_content) {
 181                                                 $adoc = new DOMDocument();
 182                                                 @$adoc->loadHTML($album_content);
 183
 184                                                 if ($adoc) {
 185                                                         $axpath = new DOMXPath($adoc);
 186                                                         $aentries = $axpath->query("//meta[@property='og:image']");
 187                                                         $urls = array();
 188
 189                                                         foreach ($aentries as $aentry) {
 190
 191                                                                 $url = str_replace("?fb", "", $aentry->getAttribute("content"));
 192                                                                 $check_url = basename($url);
 193                                                                 $check_url = mb_substr($check_url, 0, strrpos($check_url, "."));
 194
 195                                                                 if (!in_array($check_url, $urls)) {
 196                                                                         $img = $doc->createElement('img');
 197                                                                         $img->setAttribute("src", $url);
 198                                                                         $entry->parentNode->insertBefore($doc->createElement('br'), $entry);
 199
 200                                                                         $br = $doc->createElement('br');
 201
 202                                                                         $entry->parentNode->insertBefore($img, $entry);
 203                                                                         $entry->parentNode->insertBefore($br, $entry);
 204
 205                                                                         array_push($urls, $check_url);
 206
 207                                                                         $found = true;
 208                                                                 }
 209                                                         }
 210                                                 }
 211                                         }
 212                                 }
 213                         }
 214
 215                         // remove tiny thumbnails
 216                         if ($entry->hasAttribute("src")) {
 217                                 if ($entry->parentNode && $entry->parentNode->parentNode) {
 218                                         $entry->parentNode->parentNode->removeChild($entry->parentNode);
 219                                 }
 220                         }
 221                 }
 222
 223                 return $found;
 224         }
 225
 226         function hook_article_filter($article) {
 227
 228                 if (strpos($article["link"], "reddit.com/r/") !== FALSE) {
 229                         $doc = new DOMDocument();
 230                         @$doc->loadHTML($article["content"]);
 231                         $xpath = new DOMXPath($doc);
 232
 233                         $content_link = $xpath->query("(//a[contains(., '[link]')])")->item(0);
 234
 235                         $found = $this->inline_stuff($article, $doc, $xpath);
 236
 237                         if (function_exists("curl_init") && !$found && $this->host->get($this, "enable_readability") &&
 238                                 mb_strlen(strip_tags($article["content"])) <= 150) {
 239
 240                                 if (!class_exists("Readability")) require_once(dirname(dirname(__DIR__)). "/lib/readability/Readability.php");
 241
 242                                 if ($content_link &&
 243                                         strpos($content_link->getAttribute("href"), "twitter.com") === FALSE &&
 244                                         strpos($content_link->getAttribute("href"), "youtube.com") === FALSE &&
 245                                         strpos($content_link->getAttribute("href"), "reddit.com") === FALSE) {
 246
 247                                         /* link may lead to a huge video file or whatever, we need to check content type before trying to
 248                                         parse it which p much requires curl */
 249
 250                                         $ch = curl_init($content_link->getAttribute("href"));
 251                                         curl_setopt($ch, CURLOPT_TIMEOUT, 5);
 252                                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 253                                         curl_setopt($ch, CURLOPT_HEADER, true);
 254                                         curl_setopt($ch, CURLOPT_NOBODY, true);
 255                                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION,
 256                                                 !ini_get("safe_mode") && !ini_get("open_basedir"));
 257                                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 258
 259                                         @$result = curl_exec($ch);
 260                                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 261
 262                                         if ($content_type && strpos($content_type, "text/html") !== FALSE) {
 263
 264                                                 $tmp = fetch_file_contents($content_link->getAttribute("href"));
 265
 266                                                 if ($tmp) {
 267                                                         $r = new Readability($tmp, $content_link->getAttribute("href"));
 268
 269                                                         if ($r->init()) {
 270
 271                                                                 $tmpxpath = new DOMXPath($r->dom);
 272
 273                                                                 $entries = $tmpxpath->query('(//a[@href]|//img[@src])');
 274
 275                                                                 foreach ($entries as $entry) {
 276                                                                         if ($entry->hasAttribute("href")) {
 277                                                                                 $entry->setAttribute("href",
 278                                                                                         rewrite_relative_url($content_link->getAttribute("href"), $entry->getAttribute("href")));
 279
 280                                                                         }
 281
 282                                                                         if ($entry->hasAttribute("src")) {
 283                                                                                 $entry->setAttribute("src",
 284                                                                                         rewrite_relative_url($content_link->getAttribute("href"), $entry->getAttribute("src")));
 285
 286                                                                         }
 287
 288                                                                 }
 289
 290                                                                 $article["content"] = $r->articleContent->innerHTML . "<hr/>" . $article["content"];
 291
 292                                                                 // prob not a very good idea (breaks wikipedia pages, etc) -
 293                                                                 // inliner currently is not really fit for any random web content
 294
 295                                                                 //$doc = new DOMDocument();
 296                                                                 //@$doc->loadHTML($article["content"]);
 297                                                                 //$xpath = new DOMXPath($doc);
 298                                                                 //$found = $this->inline_stuff($article, $doc, $xpath);
 299                                                         }
 300                                                 }
 301                                         }
 302                                 }
 303
 304                         }
 305
 306                         $node = $doc->getElementsByTagName('body')->item(0);
 307
 308                         if ($node && $found) {
 309                                 $article["content"] = $doc->saveXML($node);
 310                         }
 311                 }
 312
 313                 return $article;
 314         }
 315
 316         function api_version() {
 317                 return 2;
 318         }
 319
 320         private function handle_as_video($doc, $entry, $source_stream, $poster_url = false) {
 321
 322                 $video = $doc->createElement('video');
 323                 $video->setAttribute("autoplay", "1");
 324                 $video->setAttribute("controls", "1");
 325                 $video->setAttribute("loop", "1");
 326
 327                 if ($poster_url) $video->setAttribute("poster", $poster_url);
 328
 329                 $source = $doc->createElement('source');
 330                 $source->setAttribute("src", $source_stream);
 331                 $source->setAttribute("type", "video/mp4");
 332
 333                 $video->appendChild($source);
 334
 335                 $br = $doc->createElement('br');
 336                 $entry->parentNode->insertBefore($video, $entry);
 337                 $entry->parentNode->insertBefore($br, $entry);
 338
 339                 $img = $doc->createElement('img');
 340                 $img->setAttribute("src",
 341                         "data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D");
 342
 343                 $entry->parentNode->insertBefore($img, $entry);
 344         }
 345 }
 346 ?>