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c4ebf01e AD |
1 | <?php |
2 | class Af_Zz_ImgProxy extends Plugin { | |
3 | private $host; | |
4 | ||
5 | function about() { | |
6 | return array(1.0, | |
c93d43c6 | 7 | "Load insecure images via built-in proxy", |
c4ebf01e AD |
8 | "fox"); |
9 | } | |
10 | ||
11 | function flags() { | |
12 | return array("needs_curl" => true); | |
13 | } | |
14 | ||
15 | function init($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 | ||
c93d43c6 AD |
31 | public function imgproxy() { |
32 | $url = rewrite_relative_url(SELF_URL_PATH, $_REQUEST["url"]); | |
33 | $kind = (int) $_REQUEST["kind"]; // 1 = video | |
c4ebf01e | 34 | |
c93d43c6 AD |
35 | $extension = $kind == 1 ? '.mp4' : '.png'; |
36 | $local_filename = CACHE_DIR . "/images/" . sha1($url) . $extension; | |
c4ebf01e | 37 | |
38b3998b | 38 | //if ($_REQUEST["debug"] == "1") { print $local_filename; die; } |
c4ebf01e | 39 | |
38b3998b | 40 | header("Content-Disposition: inline; filename=\"".basename($local_filename)."\""); |
c4ebf01e | 41 | |
c93d43c6 | 42 | if (file_exists($local_filename)) { |
38b3998b AD |
43 | $mimetype = mime_content_type($local_filename); |
44 | header("Content-type: $mimetype"); | |
45 | ||
46 | $stamp = gmdate("D, d M Y H:i:s", filemtime($local_filename)). " GMT"; | |
47 | header("Last-Modified: $stamp", true); | |
48 | ||
c93d43c6 | 49 | readfile($local_filename); |
c4ebf01e | 50 | } else { |
c93d43c6 AD |
51 | $data = fetch_file_contents(array("url" => $url)); |
52 | if ($data) { | |
38b3998b AD |
53 | if (file_put_contents($local_filename, $data)) { |
54 | $mimetype = mime_content_type($local_filename); | |
55 | header("Content-type: $mimetype"); | |
56 | } | |
57 | ||
c93d43c6 AD |
58 | print $data; |
59 | } | |
c4ebf01e | 60 | } |
c4ebf01e AD |
61 | } |
62 | ||
c93d43c6 | 63 | function rewrite_url_if_needed($url, $kind = 0) { |
c4ebf01e AD |
64 | $scheme = parse_url($url, PHP_URL_SCHEME); |
65 | ||
c93d43c6 AD |
66 | if ($scheme != 'https' && $scheme != "" && strpos($url, "data:") !== 0) { |
67 | $url = "backend.php?op=pluginhandler&plugin=af_zz_imgproxy&method=imgproxy&kind=$kind&url=" . | |
c4ebf01e | 68 | htmlspecialchars($url); |
c4ebf01e AD |
69 | } |
70 | ||
71 | return $url; | |
72 | } | |
73 | ||
74 | function hook_render_article_cdm($article, $api_mode = false) { | |
75 | ||
76 | $need_saving = false; | |
77 | ||
78 | $doc = new DOMDocument(); | |
79 | if (@$doc->loadHTML($article["content"])) { | |
80 | $xpath = new DOMXPath($doc); | |
81 | $imgs = $xpath->query("//img[@src]"); | |
82 | ||
83 | foreach ($imgs as $img) { | |
84 | $new_src = $this->rewrite_url_if_needed($img->getAttribute("src")); | |
85 | ||
86 | if ($new_src != $img->getAttribute("src")) { | |
87 | $img->setAttribute("src", $new_src); | |
88 | ||
89 | $need_saving = true; | |
90 | } | |
91 | } | |
92 | ||
93 | $vids = $xpath->query("//video"); | |
94 | ||
95 | foreach ($vids as $vid) { | |
96 | if ($vid->hasAttribute("poster")) { | |
97 | $new_src = $this->rewrite_url_if_needed($vid->getAttribute("poster")); | |
98 | ||
99 | if ($new_src != $vid->getAttribute("poster")) { | |
100 | $vid->setAttribute("poster", $new_src); | |
101 | ||
102 | $need_saving = true; | |
103 | } | |
104 | } | |
105 | ||
106 | $vsrcs = $xpath->query("source", $vid); | |
107 | ||
108 | foreach ($vsrcs as $vsrc) { | |
c93d43c6 | 109 | $new_src = $this->rewrite_url_if_needed($vsrc->getAttribute("src"), 1); |
c4ebf01e AD |
110 | |
111 | if ($new_src != $vsrc->getAttribute("src")) { | |
112 | $vid->setAttribute("src", $new_src); | |
113 | ||
114 | $need_saving = true; | |
115 | } | |
116 | } | |
117 | } | |
118 | } | |
119 | ||
120 | if ($need_saving) $article["content"] = $doc->saveXML(); | |
121 | ||
122 | return $article; | |
123 | } | |
124 | ||
125 | function api_version() { | |
126 | return 2; | |
127 | } | |
128 | } |