]> git.wh0rd.org - tt-rss.git/blobdiff - plugins/af_zz_imgproxy/init.php
tunables:
[tt-rss.git] / plugins / af_zz_imgproxy / init.php
index 2102370e3ce9b53c289de34b12edb981c86c3588..870e12a0816e9e3f3495c8c42ded95046bfd73ec 100644 (file)
@@ -8,6 +8,8 @@ class Af_Zz_ImgProxy extends Plugin {
                        "fox");
        }
 
+       private $ssl_known_whitelist = "imgur.com gfycat.com i.reddituploads.com pbs.twimg.com i.redd.it i.sli.mg media.tumblr.com";
+
        function is_public_method($method) {
                return $method === "imgproxy";
        }
@@ -17,14 +19,13 @@ class Af_Zz_ImgProxy extends Plugin {
 
                $host->add_hook($host::HOOK_RENDER_ARTICLE, $this);
                $host->add_hook($host::HOOK_RENDER_ARTICLE_CDM, $this);
-               $host->add_hook($host::HOOK_RENDER_ARTICLE_API, $this);
                $host->add_hook($host::HOOK_ENCLOSURE_ENTRY, $this);
 
                $host->add_hook($host::HOOK_PREFS_TAB, $this);
        }
 
        function hook_enclosure_entry($enc) {
-               if (preg_match("/image/", $enc["content_type"]) || preg_match("/\.(jpe?g|png|gif|bmp)$/i", $enc["filename"])) {
+               if (preg_match("/image/", $enc["content_type"])) {
                        $proxy_all = $this->host->get($this, "proxy_all");
 
                        $enc["content_url"] = $this->rewrite_url_if_needed($enc["content_url"], $proxy_all);
@@ -37,14 +38,9 @@ class Af_Zz_ImgProxy extends Plugin {
                return $this->hook_render_article_cdm($article);
        }
 
-       function hook_render_article_api($headline) {
-               return $this->hook_render_article_cdm($headline["headline"], true);
-       }
-
        public function imgproxy() {
 
                $url = rewrite_relative_url(SELF_URL_PATH, $_REQUEST["url"]);
-               $kind = (int) $_REQUEST["kind"]; // 1 = video
 
                // called without user context, let's just redirect to original URL
                if (!$_SESSION["uid"]) {
@@ -52,8 +48,7 @@ class Af_Zz_ImgProxy extends Plugin {
                        return;
                }
 
-               $extension = $kind == 1 ? '.mp4' : '.png';
-               $local_filename = CACHE_DIR . "/images/" . sha1($url) . $extension;
+               $local_filename = CACHE_DIR . "/images/" . sha1($url);
 
                if ($_REQUEST["debug"] == "1") { print $url . "\n" . $local_filename; die; }
 
@@ -71,17 +66,53 @@ class Af_Zz_ImgProxy extends Plugin {
                        $data = fetch_file_contents(array("url" => $url));
 
                        if ($data) {
-                               if (file_put_contents($local_filename, $data)) {
-                                       $mimetype = mime_content_type($local_filename);
-                                       header("Content-type: $mimetype");
+
+                               $disable_cache = $this->host->get($this, "disable_cache");
+
+                               if (!$disable_cache && strlen($data) > MIN_CACHE_FILE_SIZE) {
+                                       if (file_put_contents($local_filename, $data)) {
+                                               $mimetype = mime_content_type($local_filename);
+                                               header("Content-type: $mimetype");
+                                       }
                                }
 
                                print $data;
+                       } else {
+                               global $fetch_last_error;
+                               global $fetch_last_error_code;
+                               global $fetch_last_error_content;
+
+                               if (function_exists("imagecreate") && !isset($_REQUEST["text"])) {
+                                       $img = imagecreate(450, 75);
+
+                                       /*$bg =*/ imagecolorallocate($img, 255, 255, 255);
+                                       $textcolor = imagecolorallocate($img, 255, 0, 0);
+
+                                       imagerectangle($img, 0, 0, 450-1, 75-1, $textcolor);
+
+                                       imagestring($img, 5, 5, 5, "Proxy request failed", $textcolor);
+                                       imagestring($img, 5, 5, 30, truncate_middle($url, 46, "..."), $textcolor);
+                                       imagestring($img, 5, 5, 55, "HTTP Code: $fetch_last_error_code", $textcolor);
+
+                                       header("Content-type: image/png");
+                                       print imagepng($img);
+                                       imagedestroy($img);
+
+                               } else {
+                                       header("Content-type: text/html");
+
+                                       http_response_code(400);
+
+                                       print "<h1>Proxy request failed.</h1>";
+                                       print "<p>Fetch error $fetch_last_error ($fetch_last_error_code)</p>";
+                                       print "<p>URL: $url</p>";
+                                       print "<textarea cols='80' rows='25'>" . htmlspecialchars($fetch_last_error_content) . "</textarea>";
+                               }
                        }
                }
        }
 
-       function rewrite_url_if_needed($url, $kind, $all_remote = false) {
+       function rewrite_url_if_needed($url, $all_remote = false) {
                $scheme = parse_url($url, PHP_URL_SCHEME);
 
                if ($all_remote) {
@@ -95,7 +126,21 @@ class Af_Zz_ImgProxy extends Plugin {
 
                if (($scheme != 'https' && $scheme != "") || $is_remote) {
                        if (strpos($url, "data:") !== 0) {
-                               $url = "public.php?op=pluginhandler&plugin=af_zz_imgproxy&pmethod=imgproxy&kind=$kind&url=" .
+                               $parts = parse_url($url);
+
+                               foreach (explode(" " , $this->ssl_known_whitelist) as $host) {
+                                       if (substr(strtolower($parts['host']), -strlen($host)) === strtolower($host)) {
+                                               $parts['scheme'] = 'https';
+                                               $url = build_url($parts);
+                                               if ($all_remote && $is_remote) {
+                                                       break;
+                                               } else {
+                                                       return $url;
+                                               }
+                                       }
+                               }
+
+                               return get_self_url_prefix() . "/public.php?op=pluginhandler&plugin=af_zz_imgproxy&pmethod=imgproxy&url=" .
                                        urlencode($url);
                        }
                }
@@ -103,6 +148,9 @@ class Af_Zz_ImgProxy extends Plugin {
                return $url;
        }
 
+       /**
+        * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+        */
        function hook_render_article_cdm($article, $api_mode = false) {
 
                $need_saving = false;
@@ -114,10 +162,11 @@ class Af_Zz_ImgProxy extends Plugin {
                        $imgs = $xpath->query("//img[@src]");
 
                        foreach ($imgs as $img) {
-                               $new_src = $this->rewrite_url_if_needed($img->getAttribute("src"), 0, $proxy_all);
+                               $new_src = $this->rewrite_url_if_needed($img->getAttribute("src"), $proxy_all);
 
                                if ($new_src != $img->getAttribute("src")) {
                                        $img->setAttribute("src", $new_src);
+                                       $img->removeAttribute("srcset");
 
                                        $need_saving = true;
                                }
@@ -127,7 +176,7 @@ class Af_Zz_ImgProxy extends Plugin {
 
                        foreach ($vids as $vid) {
                                if ($vid->hasAttribute("poster")) {
-                                       $new_src = $this->rewrite_url_if_needed($vid->getAttribute("poster"), 0, $proxy_all);
+                                       $new_src = $this->rewrite_url_if_needed($vid->getAttribute("poster"), $proxy_all);
 
                                        if ($new_src != $vid->getAttribute("poster")) {
                                                $vid->setAttribute("poster", $new_src);
@@ -139,7 +188,7 @@ class Af_Zz_ImgProxy extends Plugin {
                                $vsrcs = $xpath->query("source", $vid);
 
                                foreach ($vsrcs as $vsrc) {
-                                       $new_src = $this->rewrite_url_if_needed($vsrc->getAttribute("src"), 1, $proxy_all);
+                                       $new_src = $this->rewrite_url_if_needed($vsrc->getAttribute("src"), $proxy_all);
 
                                        if ($new_src != $vsrc->getAttribute("src")) {
                                                $vid->setAttribute("src", $new_src);
@@ -182,8 +231,11 @@ class Af_Zz_ImgProxy extends Plugin {
 
                $proxy_all = $this->host->get($this, "proxy_all");
                print_checkbox("proxy_all", $proxy_all);
+               print "&nbsp;<label for=\"proxy_all\">" . __("Enable proxy for all remote images.") . "</label><br/>";
 
-               print "&nbsp;<label for=\"proxy_all\">" . __("Enable proxy for all remote images.") . "</label>";
+               $disable_cache = $this->host->get($this, "disable_cache");
+               print_checkbox("disable_cache", $disable_cache);
+               print "&nbsp;<label for=\"disable_cache\">" . __("Don't cache files locally.") . "</label>";
 
                print "<p>"; print_button("submit", __("Save"));
 
@@ -194,8 +246,10 @@ class Af_Zz_ImgProxy extends Plugin {
 
        function save() {
                $proxy_all = checkbox_to_sql_bool($_POST["proxy_all"]) == "true";
+               $disable_cache = checkbox_to_sql_bool($_POST["disable_cache"]) == "true";
 
-               $this->host->set($this, "proxy_all", $proxy_all);
+               $this->host->set($this, "proxy_all", $proxy_all, false);
+               $this->host->set($this, "disable_cache", $disable_cache);
 
                echo __("Configuration saved");
        }