1 files changed, 43 insertions, 0 deletions
diff --git a/components/alerts/src/nsAlertsUtils.cpp b/components/alerts/src/nsAlertsUtils.cpp
new file mode 100644
index 000000000..5f7d92d2a
--- /dev/null
+++ b/components/alerts/src/nsAlertsUtils.cpp
@@ -0,0 +1,43 @@
+/* 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/. */
+
+#include "nsAlertsUtils.h"
+
+#include "nsCOMPtr.h"
+#include "nsContentUtils.h"
+#include "nsIStringBundle.h"
+#include "nsIURI.h"
+#include "nsXPIDLString.h"
+
+/* static */
+bool
+nsAlertsUtils::IsActionablePrincipal(nsIPrincipal* aPrincipal)
+{
+  return aPrincipal &&
+         !nsContentUtils::IsSystemOrExpandedPrincipal(aPrincipal) &&
+         !aPrincipal->GetIsNullPrincipal();
+}
+
+/* static */
+void
+nsAlertsUtils::GetSourceHostPort(nsIPrincipal* aPrincipal,
+                                 nsAString& aHostPort)
+{
+  if (!IsActionablePrincipal(aPrincipal)) {
+    return;
+  }
+  nsCOMPtr<nsIURI> principalURI;
+  if (NS_WARN_IF(NS_FAILED(
+      aPrincipal->GetURI(getter_AddRefs(principalURI))))) {
+    return;
+  }
+  if (!principalURI) {
+    return;
+  }
+  nsAutoCString hostPort;
+  if (NS_WARN_IF(NS_FAILED(principalURI->GetHostPort(hostPort)))) {
+    return;
+  }
+  CopyUTF8toUTF16(hostPort, aHostPort);
+}