]>
git.wh0rd.org - tt-rss.git/blob - plugins/af_zz_imgproxy/init.php
2 class Af_Zz_ImgProxy
extends Plugin
{
7 "Load insecure images via built-in proxy",
11 private $ssl_known_whitelist = "imgur.com gfycat.com i.reddituploads.com pbs.twimg.com i.redd.it i.sli.mg media.tumblr.com";
13 function is_public_method($method) {
14 return $method === "imgproxy";
17 function init($host) {
20 $host->add_hook($host::HOOK_RENDER_ARTICLE
, $this);
21 $host->add_hook($host::HOOK_RENDER_ARTICLE_CDM
, $this);
22 $host->add_hook($host::HOOK_ENCLOSURE_ENTRY
, $this);
24 $host->add_hook($host::HOOK_PREFS_TAB
, $this);
27 function hook_enclosure_entry($enc) {
28 if (preg_match("/image/", $enc["content_type"])) {
29 $proxy_all = $this->host
->get($this, "proxy_all");
31 $enc["content_url"] = $this->rewrite_url_if_needed($enc["content_url"], $proxy_all);
37 function hook_render_article($article) {
38 return $this->hook_render_article_cdm($article);
41 public function imgproxy() {
43 $url = rewrite_relative_url(SELF_URL_PATH
, $_REQUEST["url"]);
45 // called without user context, let's just redirect to original URL
46 if (!$_SESSION["uid"]) {
47 header("Location: $url");
51 $local_filename = CACHE_DIR
. "/images/" . sha1($url);
53 if ($_REQUEST["debug"] == "1") { print $url . "\n" . $local_filename; die; }
55 header("Content-Disposition: inline; filename=\"".basename($local_filename)."\"");
57 if (file_exists($local_filename)) {
58 $mimetype = mime_content_type($local_filename);
59 header("Content-type: $mimetype");
61 $stamp = gmdate("D, d M Y H:i:s", filemtime($local_filename)). " GMT";
62 header("Last-Modified: $stamp", true);
64 readfile($local_filename);
66 $data = fetch_file_contents(array("url" => $url));
69 if (file_put_contents($local_filename, $data)) {
70 $mimetype = mime_content_type($local_filename);
71 header("Content-type: $mimetype");
76 global $fetch_last_error;
77 global $fetch_last_error_code;
78 global $fetch_last_error_content;
80 if (function_exists("imagecreate") && !isset($_REQUEST["text"])) {
81 $img = imagecreate(450, 75);
83 $bg = imagecolorallocate($img, 255, 255, 255);
84 $textcolor = imagecolorallocate($img, 255, 0, 0);
86 imagerectangle($img, 0, 0, 450-1, 75-1, $textcolor);
88 imagestring($img, 5, 5, 5, "Proxy request failed", $textcolor);
89 imagestring($img, 5, 5, 30, truncate_middle($url, 46, "..."), $textcolor);
90 imagestring($img, 5, 5, 55, "HTTP Code: $fetch_last_error_code", $textcolor);
92 header("Content-type: image/png");
97 header("Content-type: text/html");
99 http_response_code(400);
101 print "<h1>Proxy request failed.</h1>";
102 print "<p>Fetch error $fetch_last_error ($fetch_last_error_code)</p>";
103 print "<p>URL: $url</p>";
104 print "<textarea cols='80' rows='25'>" . htmlspecialchars($fetch_last_error_content) . "</textarea>";
110 function rewrite_url_if_needed($url, $all_remote = false) {
111 $scheme = parse_url($url, PHP_URL_SCHEME
);
114 $host = parse_url($url, PHP_URL_HOST
);
115 $self_host = parse_url(SELF_URL_PATH
, PHP_URL_HOST
);
117 $is_remote = $host != $self_host;
122 if (($scheme != 'https' && $scheme != "") ||
$is_remote) {
123 if (strpos($url, "data:") !== 0) {
124 $parts = parse_url($url);
126 foreach (explode(" " , $this->ssl_known_whitelist
) as $host) {
127 if (strpos($parts['host'], $host) !== FALSE) {
128 $parts['scheme'] = 'https';
130 return build_url($parts);
134 return get_self_url_prefix() . "/public.php?op=pluginhandler&plugin=af_zz_imgproxy&pmethod=imgproxy&url=" .
142 function hook_render_article_cdm($article, $api_mode = false) {
144 $need_saving = false;
145 $proxy_all = $this->host
->get($this, "proxy_all");
147 $doc = new DOMDocument();
148 if (@$doc->loadHTML($article["content"])) {
149 $xpath = new DOMXPath($doc);
150 $imgs = $xpath->query("//img[@src]");
152 foreach ($imgs as $img) {
153 $new_src = $this->rewrite_url_if_needed($img->getAttribute("src"), $proxy_all);
155 if ($new_src != $img->getAttribute("src")) {
156 $img->setAttribute("src", $new_src);
157 $img->removeAttribute("srcset");
163 $vids = $xpath->query("//video");
165 foreach ($vids as $vid) {
166 if ($vid->hasAttribute("poster")) {
167 $new_src = $this->rewrite_url_if_needed($vid->getAttribute("poster"), $proxy_all);
169 if ($new_src != $vid->getAttribute("poster")) {
170 $vid->setAttribute("poster", $new_src);
176 $vsrcs = $xpath->query("source", $vid);
178 foreach ($vsrcs as $vsrc) {
179 $new_src = $this->rewrite_url_if_needed($vsrc->getAttribute("src"), $proxy_all);
181 if ($new_src != $vsrc->getAttribute("src")) {
182 $vid->setAttribute("src", $new_src);
190 if ($need_saving) $article["content"] = $doc->saveXML();
195 function hook_prefs_tab($args) {
196 if ($args != "prefFeeds") return;
198 print "<div dojoType=\"dijit.layout.AccordionPane\" title=\"".__('Image proxy settings (af_zz_imgproxy)')."\">";
200 print "<form dojoType=\"dijit.form.Form\">";
202 print "<script type=\"dojo/method\" event=\"onSubmit\" args=\"evt\">
203 evt.preventDefault();
204 if (this.validate()) {
205 console.log(dojo.objectToQuery(this.getValues()));
206 new Ajax.Request('backend.php', {
207 parameters: dojo.objectToQuery(this.getValues()),
208 onComplete: function(transport) {
209 notify_info(transport.responseText);
216 print_hidden("op", "pluginhandler");
217 print_hidden("method", "save");
218 print_hidden("plugin", "af_zz_imgproxy");
220 $proxy_all = $this->host
->get($this, "proxy_all");
221 print_checkbox("proxy_all", $proxy_all);
223 print " <label for=\"proxy_all\">" . __("Enable proxy for all remote images.") . "</label>";
225 print "<p>"; print_button("submit", __("Save"));
233 $proxy_all = checkbox_to_sql_bool($_POST["proxy_all"]) == "true";
235 $this->host
->set($this, "proxy_all", $proxy_all);
237 echo __("Configuration saved");
240 function api_version() {