Bug 1398229 - Save-link-as feature should use the loading principal - implementation of nsIContentPolicy.TYPE_SAVE_AS_DOWNLOAD

2 files changed, 13 insertions, 0 deletions

diff --git a/dom/security/nsContentSecurityManager.cpp b/dom/security/nsContentSecurityManager.cpp
index f329aa7239..4ee9b48777 100644
--- a/dom/security/nsContentSecurityManager.cpp
+++ b/dom/security/nsContentSecurityManager.cpp
@@ -471,6 +471,12 @@ DoContentSecurityChecks(nsIChannel* aChannel, nsILoadInfo* aLoadInfo)
       break;
     }
 
+    case nsIContentPolicy::TYPE_SAVEAS_DOWNLOAD: {
+      mimeTypeGuess = EmptyCString();
+      requestingContext = aLoadInfo->LoadingNode();
+      break;
+    }
+
     default:
       // nsIContentPolicy::TYPE_INVALID
       MOZ_ASSERT(false, "can not perform security check without a valid contentType");
diff --git a/dom/security/nsMixedContentBlocker.cpp b/dom/security/nsMixedContentBlocker.cpp
index 7d50a43a3e..c03628da0b 100644
--- a/dom/security/nsMixedContentBlocker.cpp
+++ b/dom/security/nsMixedContentBlocker.cpp
@@ -468,6 +468,13 @@ nsMixedContentBlocker::ShouldLoad(bool aHadInsecureImageRedirect,
       *aDecision = ACCEPT;
       return NS_OK;
 
+    // Creating insecure connections for a save-as link download is acceptable.
+    // This download is completely disconnected from the docShell, but still
+    // using the same loading principal.
+    case TYPE_SAVEAS_DOWNLOAD:
+      *aDecision = ACCEPT;
+      return NS_OK;
+
     // Static display content is considered moderate risk for mixed content so
     // these will be blocked according to the mixed display preference
     case TYPE_IMAGE: