1 files changed, 96 insertions, 0 deletions
diff --git a/dom/security/nsMixedContentBlocker.h b/dom/security/nsMixedContentBlocker.h
new file mode 100644
index 0000000000..c47423407a
--- /dev/null
+++ b/dom/security/nsMixedContentBlocker.h
@@ -0,0 +1,96 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsMixedContentBlocker_h___
+#define nsMixedContentBlocker_h___
+
+#define NS_MIXEDCONTENTBLOCKER_CONTRACTID "@mozilla.org/mixedcontentblocker;1"
+/* daf1461b-bf29-4f88-8d0e-4bcdf332c862 */
+#define NS_MIXEDCONTENTBLOCKER_CID                   \
+  {                                                  \
+    0xdaf1461b, 0xbf29, 0x4f88, {                    \
+      0x8d, 0x0e, 0x4b, 0xcd, 0xf3, 0x32, 0xc8, 0x62 \
+    }                                                \
+  }
+
+// This enum defines type of content that is detected when an
+// nsMixedContentEvent fires
+enum MixedContentTypes {
+  // "Active" content, such as fonts, plugin content, JavaScript, stylesheets,
+  // iframes, WebSockets, and XHR
+  eMixedScript,
+  // "Display" content, such as images, audio, video, and <a ping>
+  eMixedDisplay
+};
+
+#include "nsIContentPolicy.h"
+#include "nsIChannel.h"
+#include "nsIChannelEventSink.h"
+#include "imgRequest.h"
+
+using mozilla::OriginAttributes;
+
+class nsILoadInfo;  // forward declaration
+namespace mozilla::net {
+class nsProtocolProxyService;  // forward declaration
+}  // namespace mozilla::net
+
+class nsMixedContentBlocker : public nsIContentPolicy,
+                              public nsIChannelEventSink {
+ private:
+  virtual ~nsMixedContentBlocker();
+
+ public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSICONTENTPOLICY
+  NS_DECL_NSICHANNELEVENTSINK
+
+  nsMixedContentBlocker() = default;
+
+  // See:
+  // https://w3c.github.io/webappsec-secure-contexts/#is-origin-trustworthy
+  static bool IsPotentiallyTrustworthyLoopbackHost(
+      const nsACString& aAsciiHost);
+  static bool IsPotentiallyTrustworthyLoopbackURL(nsIURI* aURL);
+  static bool IsPotentiallyTrustworthyOnion(nsIURI* aURL);
+  static bool IsPotentiallyTrustworthyOrigin(nsIURI* aURI);
+
+  /**
+   * Returns true if the provided content policy type is subject to the
+   * mixed content level 2 upgrading mechanism (audio, video, image).
+   */
+  static bool IsUpgradableContentType(nsContentPolicyType aType);
+
+  /* Static version of ShouldLoad() that contains all the Mixed Content Blocker
+   * logic.  Called from non-static ShouldLoad().
+   * Called directly from imageLib when an insecure redirect exists in a cached
+   * image load.
+   * @param aHadInsecureImageRedirect
+   *        boolean flag indicating that an insecure redirect through http
+   *        occured when this image was initially loaded and cached.
+   * @param aReportError
+   *        boolean flag indicating if a rejection should automaticly be
+   *        logged into the Console.
+   * Remaining parameters are from nsIContentPolicy::ShouldLoad().
+   */
+  static nsresult ShouldLoad(bool aHadInsecureImageRedirect,
+                             nsIURI* aContentLocation, nsILoadInfo* aLoadInfo,
+                             const nsACString& aMimeGuess, bool aReportError,
+                             int16_t* aDecision);
+  static void AccumulateMixedContentHSTS(
+      nsIURI* aURI, bool aActive, const OriginAttributes& aOriginAttributes);
+
+  static bool URISafeToBeLoadedInSecureContext(nsIURI* aURI);
+
+  static void OnPrefChange(const char* aPref, void* aClosure);
+  static void GetSecureContextAllowList(nsACString& aList);
+  static void Shutdown();
+
+  static bool sSecurecontextAllowlistCached;
+  static nsCString* sSecurecontextAllowlist;
+};
+
+#endif /* nsMixedContentBlocker_h___ */