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                                 $matches = array();
  82
  83                                 if (preg_match("/https?:\/\/gfycat.com\/([a-z]+)$/i", $entry->getAttribute("href"), $matches)) {
  84
  85                                         $tmp = fetch_file_contents($entry->getAttribute("href"));
  86
  87                                         if ($tmp) {
  88                                                 $tmpdoc = new DOMDocument();
  89                                                 @$tmpdoc->loadHTML($tmp);
  90
  91                                                 if ($tmpdoc) {
  92                                                         $tmpxpath = new DOMXPath($tmpdoc);
  93                                                         $source_meta = $tmpxpath->query("//meta[@property='og:video']")->item(0);
  94
  95                                                         if ($source_meta) {
  96                                                                 $source_stream = $source_meta->getAttribute("content");
  97
  98                                                                 if ($source_stream) {
  99                                                                         $this->handle_as_video($doc, $entry, $source_stream);
 100                                                                         $found = 1;
 101                                                                 }
 102                                                         }
 103                                                 }
 104                                         }
 105
 106                                 }
 107
 108                                 if (preg_match("/\.(gifv)$/i", $entry->getAttribute("href"))) {
 109
 110                                         $source_stream = str_replace(".gifv", ".mp4", $entry->getAttribute("href"));
 111                                         $this->handle_as_video($doc, $entry, $source_stream);
 112
 113                                         $found = true;
 114                                 }
 115
 116                                 $matches = array();
 117                                 if (preg_match("/\.youtube\.com\/v\/([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 118                                         preg_match("/\.youtube\.com\/.*?[\&\?]v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 119                                         preg_match("/\.youtube\.com\/watch\?v=([\w-]+)/", $entry->getAttribute("href"), $matches) ||
 120                                         preg_match("/\/\/youtu.be\/([\w-]+)/", $entry->getAttribute("href"), $matches)) {
 121
 122                                         $vid_id = $matches[1];
 123
 124                                         $iframe = $doc->createElement("iframe");
 125                                         $iframe->setAttribute("class", "youtube-player");
 126                                         $iframe->setAttribute("type", "text/html");
 127                                         $iframe->setAttribute("width", "640");
 128                                         $iframe->setAttribute("height", "385");
 129                                         $iframe->setAttribute("src", "https://www.youtube.com/embed/$vid_id");
 130                                         $iframe->setAttribute("allowfullscreen", "1");
 131                                         $iframe->setAttribute("frameborder", "0");
 132
 133                                         $br = $doc->createElement('br');
 134                                         $entry->parentNode->insertBefore($iframe, $entry);
 135                                         $entry->parentNode->insertBefore($br, $entry);
 136
 137                                         $found = true;
 138                                 }
 139
 140                                 if (preg_match("/\.(jpg|jpeg|gif|png)(\?[0-9][0-9]*)?$/i", $entry->getAttribute("href"))) {
 141                                         $img = $doc->createElement('img');
 142                                         $img->setAttribute("src", $entry->getAttribute("href"));
 143
 144                                         $br = $doc->createElement('br');
 145                                         $entry->parentNode->insertBefore($img, $entry);
 146                                         $entry->parentNode->insertBefore($br, $entry);
 147
 148                                         $found = true;
 149                                 }
 150
 151                                 // links to imgur pages
 152                                 $matches = array();
 153                                 if (preg_match("/^https?:\/\/(m\.)?imgur.com\/([^\.\/]+$)/", $entry->getAttribute("href"), $matches)) {
 154
 155                                         $token = $matches[2];
 156
 157                                         $album_content = fetch_file_contents($entry->getAttribute("href"),
 158                                                 false, false, false, false, 10);
 159
 160                                         if ($album_content && $token) {
 161                                                 $adoc = new DOMDocument();
 162                                                 @$adoc->loadHTML($album_content);
 163
 164                                                 if ($adoc) {
 165                                                         $axpath = new DOMXPath($adoc);
 166                                                         $aentries = $axpath->query('(//img[@src])');
 167
 168                                                         foreach ($aentries as $aentry) {
 169                                                                 if (preg_match("/\/\/i.imgur.com\/$token\./", $aentry->getAttribute("src"))) {
 170                                                                         $img = $doc->createElement('img');
 171                                                                         $img->setAttribute("src", $aentry->getAttribute("src"));
 172
 173                                                                         $br = $doc->createElement('br');
 174
 175                                                                         $entry->parentNode->insertBefore($img, $entry);
 176                                                                         $entry->parentNode->insertBefore($br, $entry);
 177
 178                                                                         $found = true;
 179
 180                                                                         break;
 181                                                                 }
 182                                                         }
 183                                                 }
 184                                         }
 185                                 }
 186
 187                                 // linked albums, ffs
 188                                 if (preg_match("/^https?:\/\/imgur.com\/(a|album|gallery)\/[^\.]+$/", $entry->getAttribute("href"), $matches)) {
 189
 190                                         $album_content = fetch_file_contents($entry->getAttribute("href"),
 191                                                 false, false, false, false, 10);
 192
 193                                         if ($album_content) {
 194                                                 $adoc = new DOMDocument();
 195                                                 @$adoc->loadHTML($album_content);
 196
 197                                                 if ($adoc) {
 198                                                         $axpath = new DOMXPath($adoc);
 199                                                         $aentries = $axpath->query("//meta[@property='og:image']");
 200                                                         $urls = array();
 201
 202                                                         foreach ($aentries as $aentry) {
 203
 204                                                                 if (!in_array($aentry->getAttribute("content"), $urls)) {
 205                                                                         $img = $doc->createElement('img');
 206                                                                         $img->setAttribute("src", $aentry->getAttribute("content"));
 207                                                                         $entry->parentNode->insertBefore($doc->createElement('br'), $entry);
 208
 209                                                                         $br = $doc->createElement('br');
 210
 211                                                                         $entry->parentNode->insertBefore($img, $entry);
 212                                                                         $entry->parentNode->insertBefore($br, $entry);
 213
 214                                                                         array_push($urls, $aentry->getAttribute("content"));
 215
 216                                                                         $found = true;
 217                                                                 }
 218                                                         }
 219                                                 }
 220                                         }
 221                                 }
 222                         }
 223
 224                         // remove tiny thumbnails
 225                         if ($entry->hasAttribute("src")) {
 226                                 if ($entry->parentNode && $entry->parentNode->parentNode) {
 227                                         $entry->parentNode->parentNode->removeChild($entry->parentNode);
 228                                 }
 229                         }
 230                 }
 231
 232                 return $found;
 233         }
 234
 235         function hook_article_filter($article) {
 236
 237                 if (strpos($article["link"], "reddit.com/r/") !== FALSE) {
 238                         $doc = new DOMDocument();
 239                         @$doc->loadHTML($article["content"]);
 240                         $xpath = new DOMXPath($doc);
 241
 242                         $found = $this->inline_stuff($article, $doc, $xpath);
 243
 244                         if (function_exists("curl_init") && !$found && $this->host->get($this, "enable_readability") &&
 245                                 mb_strlen(strip_tags($article["content"])) <= 150) {
 246
 247                                 if (!class_exists("Readability")) require_once(dirname(dirname(__DIR__)). "/lib/readability/Readability.php");
 248
 249                                 $content_link = $xpath->query("(//a[contains(., '[link]')])")->item(0);
 250
 251                                 if ($content_link &&
 252                                         strpos($content_link->getAttribute("href"), "twitter.com") === FALSE &&
 253                                         strpos($content_link->getAttribute("href"), "youtube.com") === FALSE &&
 254                                         strpos($content_link->getAttribute("href"), "reddit.com") === FALSE) {
 255
 256                                         /* link may lead to a huge video file or whatever, we need to check content type before trying to
 257                                         parse it which p much requires curl */
 258
 259                                         $ch = curl_init($content_link->getAttribute("href"));
 260                                         curl_setopt($ch, CURLOPT_TIMEOUT, 5);
 261                                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 262                                         curl_setopt($ch, CURLOPT_HEADER, true);
 263                                         curl_setopt($ch, CURLOPT_NOBODY, true);
 264                                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION,
 265                                                 !ini_get("safe_mode") && !ini_get("open_basedir"));
 266                                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 267
 268                                         @$result = curl_exec($ch);
 269                                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 270
 271                                         if ($content_type && strpos($content_type, "text/html") !== FALSE) {
 272
 273                                                 $tmp = fetch_file_contents($content_link->getAttribute("href"));
 274
 275                                                 if ($tmp) {
 276                                                         $r = new Readability($tmp, $content_link->getAttribute("href"));
 277
 278                                                         if ($r->init()) {
 279
 280                                                                 $tmpxpath = new DOMXPath($r->dom);
 281
 282                                                                 $entries = $tmpxpath->query('(//a[@href]|//img[@src])');
 283
 284                                                                 foreach ($entries as $entry) {
 285                                                                         if ($entry->hasAttribute("href")) {
 286                                                                                 $entry->setAttribute("href",
 287                                                                                         rewrite_relative_url($content_link->getAttribute("href"), $entry->getAttribute("href")));
 288
 289                                                                         }
 290
 291                                                                         if ($entry->hasAttribute("src")) {
 292                                                                                 $entry->setAttribute("src",
 293                                                                                         rewrite_relative_url($content_link->getAttribute("href"), $entry->getAttribute("src")));
 294
 295                                                                         }
 296
 297                                                                 }
 298
 299                                                                 $article["content"] = $r->articleContent->innerHTML . "<hr/>" . $article["content"];
 300
 301                                                                 // prob not a very good idea (breaks wikipedia pages, etc) -
 302                                                                 // inliner currently is not really fit for any random web content
 303
 304                                                                 //$doc = new DOMDocument();
 305                                                                 //@$doc->loadHTML($article["content"]);
 306                                                                 //$xpath = new DOMXPath($doc);
 307                                                                 //$found = $this->inline_stuff($article, $doc, $xpath);
 308                                                         }
 309                                                 }
 310                                         }
 311                                 }
 312
 313                         }
 314
 315                         $node = $doc->getElementsByTagName('body')->item(0);
 316
 317                         if ($node && $found) {
 318                                 $article["content"] = $doc->saveXML($node);
 319                         }
 320                 }
 321
 322                 return $article;
 323         }
 324
 325         function api_version() {
 326                 return 2;
 327         }
 328
 329         private function handle_as_video($doc, $entry, $source_stream) {
 330
 331                 $video = $doc->createElement('video');
 332                 $video->setAttribute("autoplay", "1");
 333                 $video->setAttribute("controls", "1");
 334                 $video->setAttribute("loop", "1");
 335
 336                 $source = $doc->createElement('source');
 337                 $source->setAttribute("src", $source_stream);
 338                 $source->setAttribute("type", "video/mp4");
 339
 340                 $video->appendChild($source);
 341
 342                 $br = $doc->createElement('br');
 343                 $entry->parentNode->insertBefore($video, $entry);
 344                 $entry->parentNode->insertBefore($br, $entry);
 345
 346                 $img = $doc->createElement('img');
 347                 $img->setAttribute("src",
 348                         "data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D");
 349
 350                 $entry->parentNode->insertBefore($img, $entry);
 351         }
 352 }
 353 ?>