Bug 407303: only check JAR loads for unsafe content types if the underlying load completed successfully. r+sr=bz, blocking1.9=schrep

modules/libjar/nsJARChannel.cpp

@@ -724,11 +724,8 @@ nsJARChannel::OnDownloadComplete(nsIDownloader *downloader,
 {
     nsresult rv;
 
-    // Grab the security info from our base channel
     nsCOMPtr<nsIChannel> channel(do_QueryInterface(request));
     if (channel) {
-        channel->GetSecurityInfo(getter_AddRefs(mSecurityInfo));
-
         PRUint32 loadFlags;
         channel->GetLoadFlags(&loadFlags);
         if (loadFlags & LOAD_REPLACE) {
@@ -748,8 +745,15 @@ nsJARChannel::OnDownloadComplete(nsIDownloader *downloader,
                     mJarURI = newURI;
                 }
             }
+            if (NS_SUCCEEDED(status)) {
                 status = rv;
             }
+        }
+    }
+
+    if (NS_SUCCEEDED(status) && channel) {
+        // Grab the security info from our base channel
+        channel->GetSecurityInfo(getter_AddRefs(mSecurityInfo));
 
         nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(channel));
         if (httpChannel) {
@@ -774,12 +778,9 @@ nsJARChannel::OnDownloadComplete(nsIDownloader *downloader,
                 mIsUnsafe = unsafe;
             }
         }
-
-        // XXX: THIS IS TEMPORARY
-        //mIsUnsafe = PR_FALSE;
     }
 
-    if (mIsUnsafe) {
+    if (NS_SUCCEEDED(status) && mIsUnsafe) {
         PRBool allowUnpack = PR_FALSE;
 
         nsCOMPtr<nsIPrefBranch> prefs =

modules/libjar/test/unit/test_bug407303.js

@@ -0,0 +1,39 @@
+// Regression test for bug 407303 - A failed channel should not be checked
+// for an unsafe content type.
+
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+
+// XXX: NS_ERROR_UNKNOWN_HOST is not in Components.results
+const NS_ERROR_UNKNOWN_HOST = 0x804B001E;
+
+var listener = {
+  QueryInterface: function(iid) {
+    if (iid.equals(Ci.nsISupports) ||
+        iid.equals(Ci.nsIRequestObserver))
+      return this;
+    throw Cr.NS_ERROR_NO_INTERFACE;
+  },
+
+  onStartRequest: function(request, context) {
+  },
+
+  onDataAvailable: function(request, context, stream, offset, count) {
+    do_throw("shouldn't get data!");
+  },
+
+  onStopRequest: function(request, context, status) {
+    do_check_eq(status, NS_ERROR_UNKNOWN_HOST);
+    do_test_finished();
+  }
+};
+
+function run_test() {
+  var ios = Cc["@mozilla.org/network/io-service;1"].
+            getService(Ci.nsIIOService);
+
+  var channel = ios.newChannel("jar:http://test.invalid/test.jar!/index.html",
+                               null, null);
+  channel.asyncOpen(listener, null);
+  do_test_pending();
+}