plugins/af_zz_imgproxy/init.php

   1 <?php
   2 class Af_Zz_ImgProxy extends Plugin {
   3         private $host;
   4
   5         function about() {
   6                 return array(1.0,
   7                         "Load insecure images via built-in proxy (no caching)",
   8                         "fox");
   9         }
  10
  11         function flags() {
  12                 return array("needs_curl" => true);
  13         }
  14
  15         function init($host) {
  16                 $this->host = $host;
  17
  18                 $host->add_hook($host::HOOK_RENDER_ARTICLE, $this);
  19                 $host->add_hook($host::HOOK_RENDER_ARTICLE_CDM, $this);
  20                 $host->add_hook($host::HOOK_RENDER_ARTICLE_API, $this);
  21         }
  22
  23         function hook_render_article($article) {
  24                 return $this->hook_render_article_cdm($article);
  25         }
  26
  27         function hook_render_article_api($headline) {
  28                 return $this->hook_render_article_cdm($headline["headline"], true);
  29         }
  30
  31         /*public function vidproxy() {
  32                 $url = $_REQUEST["url"];
  33
  34                 if (preg_match("/\.(mp4|webm|gifv)/", $url, $matches)) {
  35                         $type = $matches[1];
  36                         $embed_url = $url;
  37
  38                         if ($type == "gifv") {
  39                                 $type = "mp4";
  40                                 $embed_url = str_replace(".gifv", ".mp4", $embed_url);
  41                         }
  42
  43                         header("Content-type: text/html");
  44
  45                         $embed_url = htmlspecialchars("backend.php?op=pluginhandler&plugin=af_zz_imgproxy&method=imgproxy&url=" .
  46                                 urlencode($embed_url));
  47
  48                         print "<video class=\"\" autoplay=\"true\" controls=\"true\" loop=\"true\">";
  49                         print "<source src=\"$embed_url\" type=\"video/$type\">";
  50                         print "</video>";
  51                 } else {
  52                         header("Location: " . htmlspecialchars($url));
  53                 }
  54         }*/
  55
  56         public function imgproxy() {
  57                 $url = rewrite_relative_url(SELF_URL_PATH, $_REQUEST["url"]);
  58
  59                 if (function_exists("getimagesize")) {
  60                         $is = @getimagesize($url);
  61                         header("Content-type: " . $is["mime"]);
  62                 }
  63
  64                 print fetch_file_contents(array("url" => $url));
  65         }
  66
  67         function rewrite_url_if_needed($url) {
  68                 $scheme = parse_url($url, PHP_URL_SCHEME);
  69
  70                 if ($scheme != 'https' && $scheme != "") {
  71                         $url = "backend.php?op=pluginhandler&plugin=af_zz_imgproxy&method=imgproxy&url=" .
  72                                 htmlspecialchars($url);
  73
  74                 }
  75
  76                 return $url;
  77         }
  78
  79         function hook_render_article_cdm($article, $api_mode = false) {
  80
  81                 $need_saving = false;
  82
  83                 $doc = new DOMDocument();
  84                 if (@$doc->loadHTML($article["content"])) {
  85                         $xpath = new DOMXPath($doc);
  86                         $imgs = $xpath->query("//img[@src]");
  87
  88                         foreach ($imgs as $img) {
  89                                 $new_src = $this->rewrite_url_if_needed($img->getAttribute("src"));
  90
  91                                 if ($new_src != $img->getAttribute("src")) {
  92                                         $img->setAttribute("src", $new_src);
  93
  94                                         $need_saving = true;
  95                                 }
  96                         }
  97
  98                         $vids = $xpath->query("//video");
  99
 100                         foreach ($vids as $vid) {
 101                                 if ($vid->hasAttribute("poster")) {
 102                                         $new_src = $this->rewrite_url_if_needed($vid->getAttribute("poster"));
 103
 104                                         if ($new_src != $vid->getAttribute("poster")) {
 105                                                 $vid->setAttribute("poster", $new_src);
 106
 107                                                 $need_saving = true;
 108                                         }
 109                                 }
 110
 111                                 $vsrcs = $xpath->query("source", $vid);
 112
 113                                 foreach ($vsrcs as $vsrc) {
 114                                         $new_src = $this->rewrite_url_if_needed($vsrc->getAttribute("src"));
 115
 116                                         if ($new_src != $vsrc->getAttribute("src")) {
 117                                                 $vid->setAttribute("src", $new_src);
 118
 119                                                 $need_saving = true;
 120                                         }
 121                                 }
 122                         }
 123                 }
 124
 125                 if ($need_saving) $article["content"] = $doc->saveXML();
 126
 127                 return $article;
 128         }
 129
 130         function api_version() {
 131                 return 2;
 132         }
 133 }