plugins/af_redditimgur/init.php

   1 <?php
   2 class Af_RedditImgur extends Plugin {
   3         private $host;
   4
   5         function about() {
   6                 return array(1.0,
   7                         "Inline image links in Reddit RSS feeds",
   8                         "fox");
   9         }
  10
  11         function init($host) {
  12                 $this->host = $host;
  13
  14                 $host->add_hook($host::HOOK_ARTICLE_FILTER, $this);
  15         }
  16
  17         function hook_article_filter($article) {
  18
  19                 if (strpos($article["link"], "reddit.com/r/") !== FALSE) {
  20                                 $doc = new DOMDocument();
  21                                 @$doc->loadHTML($article["content"]);
  22
  23                                 if ($doc) {
  24                                         $xpath = new DOMXPath($doc);
  25                                         $entries = $xpath->query('(//a[@href]|//img[@src])');
  26
  27                                         $found = false;
  28
  29                                         foreach ($entries as $entry) {
  30                                                 if ($entry->hasAttribute("href")) {
  31
  32                                                         if (preg_match("/\.(gifv)$/i", $entry->getAttribute("href"))) {
  33
  34                                                                 $gifv_meta = fetch_file_contents($entry->getAttribute("href"),
  35                                                                         false, false, false, false, 10);
  36
  37                                                                 if ($gifv_meta) {
  38                                                                         $adoc = new DOMDocument();
  39                                                                         @$adoc->loadHTML($gifv_meta);
  40
  41                                                                         if ($adoc) {
  42                                                                                 $axpath = new DOMXPath($adoc);
  43                                                                                 $aentries = $axpath->query('(//meta)');
  44
  45                                                                                 $width = false;
  46                                                                                 $height = false;
  47
  48                                                                                 foreach ($aentries as $aentry) {
  49                                                                                         if (strpos($aentry->getAttribute("property"), "og:image:width") !== FALSE) {
  50                                                                                                 $width = $aentry->getAttribute("content");
  51                                                                                         }
  52
  53                                                                                         if (strpos($aentry->getAttribute("property"), "og:image:height") !== FALSE) {
  54                                                                                                 $height = $aentry->getAttribute("content");
  55                                                                                         }
  56                                                                                 }
  57                                                                         }
  58                                                                 }
  59
  60                                                                 if ($width && $height) {
  61
  62                                                                         $iframe = $doc->createElement('iframe');
  63                                                                         $iframe->setAttribute("src", str_replace("http:", "", $entry->getAttribute("href")));
  64                                                                         $iframe->setAttribute("frameborder", "0");
  65                                                                         $iframe->setAttribute("width", $width + 64);
  66                                                                         $iframe->setAttribute("height", $height + 64);
  67
  68                                                                         $br = $doc->createElement('br');
  69                                                                         $entry->parentNode->insertBefore($iframe, $entry);
  70                                                                         $entry->parentNode->insertBefore($br, $entry);
  71
  72                                                                         // add empty img tag to disable display of attachment
  73                                                                         $img = $doc->createElement('img');
  74                                                                         $img->setAttribute("src", "data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D");
  75                                                                         $img->setAttribute("width", "0");
  76                                                                         $img->setAttribute("height", "0");
  77                                                                         $entry->parentNode->insertBefore($img, $entry);
  78                                                                         $found = true;
  79                                                                 }
  80                                                         }
  81
  82                                                         if (preg_match("/\.(jpg|jpeg|gif|png)(\?[0-9])?$/i", $entry->getAttribute("href"))) {
  83
  84                                                                 $img = $doc->createElement('img');
  85                                                                 $img->setAttribute("src", $entry->getAttribute("href"));
  86
  87                                                                 $br = $doc->createElement('br');
  88                                                                 $entry->parentNode->insertBefore($img, $entry);
  89                                                                 $entry->parentNode->insertBefore($br, $entry);
  90
  91                                                                 $found = true;
  92                                                         }
  93
  94                                                         // links to imgur pages
  95                                                         $matches = array();
  96                                                         if (preg_match("/^https?:\/\/(m\.)?imgur.com\/([^\.\/]+$)/", $entry->getAttribute("href"), $matches)) {
  97
  98                                                                 $token = $matches[2];
  99
 100                                                                 $album_content = fetch_file_contents($entry->getAttribute("href"),
 101                                                                         false, false, false, false, 10);
 102
 103                                                                 if ($album_content && $token) {
 104                                                                         $adoc = new DOMDocument();
 105                                                                         @$adoc->loadHTML($album_content);
 106
 107                                                                         if ($adoc) {
 108                                                                                 $axpath = new DOMXPath($adoc);
 109                                                                                 $aentries = $axpath->query('(//img[@src])');
 110
 111                                                                                 foreach ($aentries as $aentry) {
 112                                                                                         if (preg_match("/\/\/i.imgur.com\/$token\./", $aentry->getAttribute("src"))) {
 113                                                                                                 $img = $doc->createElement('img');
 114                                                                                                 $img->setAttribute("src", $aentry->getAttribute("src"));
 115
 116                                                                                                 $br = $doc->createElement('br');
 117
 118                                                                                                 $entry->parentNode->insertBefore($img, $entry);
 119                                                                                                 $entry->parentNode->insertBefore($br, $entry);
 120
 121                                                                                                 $found = true;
 122
 123                                                                                                 break;
 124                                                                                         }
 125                                                                                 }
 126                                                                         }
 127                                                                 }
 128                                                         }
 129
 130                                                         // linked albums, ffs
 131                                                         if (preg_match("/^https?:\/\/imgur.com\/(a|album)\/[^\.]+$/", $entry->getAttribute("href"), $matches)) {
 132
 133                                                                 $album_content = fetch_file_contents($entry->getAttribute("href"),
 134                                                                         false, false, false, false, 10);
 135
 136                                                                 if ($album_content) {
 137                                                                         $adoc = new DOMDocument();
 138                                                                         @$adoc->loadHTML($album_content);
 139
 140                                                                         if ($adoc) {
 141                                                                                 $axpath = new DOMXPath($adoc);
 142                                                                                 $aentries = $axpath->query("//meta[@property='og:image']");
 143
 144                                                                                 foreach ($aentries as $aentry) {
 145                                                                                         $img = $doc->createElement('img');
 146                                                                                         $img->setAttribute("src", $aentry->getAttribute("content"));
 147                                                                                         $entry->parentNode->insertBefore($doc->createElement('br'), $entry);
 148
 149                                                                                         $br = $doc->createElement('br');
 150
 151                                                                                         $entry->parentNode->insertBefore($img, $entry);
 152                                                                                         $entry->parentNode->insertBefore($br, $entry);
 153
 154                                                                                         $found = true;
 155                                                                                 }
 156                                                                         }
 157                                                                 }
 158                                                         }
 159                                                 }
 160
 161                                                 // remove tiny thumbnails
 162                                                 if ($entry->hasAttribute("src")) {
 163                                                         if ($entry->parentNode && $entry->parentNode->parentNode) {
 164                                                                 $entry->parentNode->parentNode->removeChild($entry->parentNode);
 165                                                         }
 166                                                 }
 167                                         }
 168
 169                                         $node = $doc->getElementsByTagName('body')->item(0);
 170
 171                                         if ($node && $found) {
 172                                                 $article["content"] = $doc->saveXML($node);
 173                                         }
 174                                 }
 175                 }
 176
 177                 return $article;
 178         }
 179
 180         function api_version() {
 181                 return 2;
 182         }
 183
 184 }
 185 ?>