From c4ebf01e69ba553f566879f526b68a9853567fff Mon Sep 17 00:00:00 2001
From: Andrew Dolgov <noreply@fakecake.org>
Date: Fri, 10 Feb 2017 10:25:10 +0300
Subject: [PATCH] add af_zz_imgproxy (initial)

---
 plugins/af_zz_imgproxy/init.php | 133 ++++++++++++++++++++++++++++++++
 1 file changed, 133 insertions(+)
 create mode 100644 plugins/af_zz_imgproxy/init.php

diff --git a/plugins/af_zz_imgproxy/init.php b/plugins/af_zz_imgproxy/init.php
new file mode 100644
index 000000000..b13117570
--- /dev/null
+++ b/plugins/af_zz_imgproxy/init.php
@@ -0,0 +1,133 @@
+<?php
+class Af_Zz_ImgProxy extends Plugin {
+	private $host;
+
+	function about() {
+		return array(1.0,
+			"Load insecure images via built-in proxy (no caching)",
+			"fox");
+	}
+
+	function flags() {
+		return array("needs_curl" => true);
+	}
+
+	function init($host) {
+		$this->host = $host;
+
+		$host->add_hook($host::HOOK_RENDER_ARTICLE, $this);
+		$host->add_hook($host::HOOK_RENDER_ARTICLE_CDM, $this);
+		$host->add_hook($host::HOOK_RENDER_ARTICLE_API, $this);
+	}
+
+	function hook_render_article($article) {
+		return $this->hook_render_article_cdm($article);
+	}
+
+	function hook_render_article_api($headline) {
+		return $this->hook_render_article_cdm($headline["headline"], true);
+	}
+
+	/*public function vidproxy() {
+		$url = $_REQUEST["url"];
+
+		if (preg_match("/\.(mp4|webm|gifv)/", $url, $matches)) {
+			$type = $matches[1];
+			$embed_url = $url;
+
+			if ($type == "gifv") {
+				$type = "mp4";
+				$embed_url = str_replace(".gifv", ".mp4", $embed_url);
+			}
+
+			header("Content-type: text/html");
+
+			$embed_url = htmlspecialchars("backend.php?op=pluginhandler&plugin=af_zz_imgproxy&method=imgproxy&url=" .
+				urlencode($embed_url));
+
+			print "<video class=\"\" autoplay=\"true\" controls=\"true\" loop=\"true\">";
+			print "<source src=\"$embed_url\" type=\"video/$type\">";
+			print "</video>";
+		} else {
+			header("Location: " . htmlspecialchars($url));
+		}
+	}*/
+
+	public function imgproxy() {
+		$url = rewrite_relative_url(SELF_URL_PATH, $_REQUEST["url"]);
+
+		if (function_exists("getimagesize")) {
+			$is = @getimagesize($url);
+			header("Content-type: " . $is["mime"]);
+		}
+
+		print fetch_file_contents(array("url" => $url));
+	}
+
+	function rewrite_url_if_needed($url) {
+		$scheme = parse_url($url, PHP_URL_SCHEME);
+
+		if ($scheme != 'https' && $scheme != "") {
+			$url = "backend.php?op=pluginhandler&plugin=af_zz_imgproxy&method=imgproxy&url=" .
+				htmlspecialchars($url);
+
+		}
+
+		return $url;
+	}
+
+	function hook_render_article_cdm($article, $api_mode = false) {
+
+		$need_saving = false;
+
+		$doc = new DOMDocument();
+		if (@$doc->loadHTML($article["content"])) {
+			$xpath = new DOMXPath($doc);
+			$imgs = $xpath->query("//img[@src]");
+
+			foreach ($imgs as $img) {
+				$new_src = $this->rewrite_url_if_needed($img->getAttribute("src"));
+
+				if ($new_src != $img->getAttribute("src")) {
+					$img->setAttribute("src", $new_src);
+
+					$need_saving = true;
+				}
+			}
+
+			$vids = $xpath->query("//video");
+
+			foreach ($vids as $vid) {
+				if ($vid->hasAttribute("poster")) {
+					$new_src = $this->rewrite_url_if_needed($vid->getAttribute("poster"));
+
+					if ($new_src != $vid->getAttribute("poster")) {
+						$vid->setAttribute("poster", $new_src);
+
+						$need_saving = true;
+					}
+				}
+
+				$vsrcs = $xpath->query("source", $vid);
+
+				foreach ($vsrcs as $vsrc) {
+					$new_src = $this->rewrite_url_if_needed($vsrc->getAttribute("src"));
+
+					if ($new_src != $vsrc->getAttribute("src")) {
+						$vid->setAttribute("src", $new_src);
+
+						$need_saving = true;
+					}
+				}
+			}
+		}
+
+		if ($need_saving) $article["content"] = $doc->saveXML();
+
+		return $article;
+	}
+
+	function api_version() {
+		return 2;
+	}
+}
\ No newline at end of file