1 files changed, 141 insertions, 0 deletions
diff --git a/caps/nsSystemPrincipal.cpp b/caps/nsSystemPrincipal.cpp
new file mode 100644
index 000000000..7bfa20efc
--- /dev/null
+++ b/caps/nsSystemPrincipal.cpp
@@ -0,0 +1,141 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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/. */
+
+/* The privileged system principal. */
+
+#include "nscore.h"
+#include "nsSystemPrincipal.h"
+#include "nsIComponentManager.h"
+#include "nsIServiceManager.h"
+#include "nsIURL.h"
+#include "nsCOMPtr.h"
+#include "nsXPIDLString.h"
+#include "nsReadableUtils.h"
+#include "nsCRT.h"
+#include "nsString.h"
+#include "nsIClassInfoImpl.h"
+#include "nsIScriptSecurityManager.h"
+#include "pratom.h"
+
+NS_IMPL_CLASSINFO(nsSystemPrincipal, nullptr,
+                  nsIClassInfo::SINGLETON | nsIClassInfo::MAIN_THREAD_ONLY,
+                  NS_SYSTEMPRINCIPAL_CID)
+NS_IMPL_QUERY_INTERFACE_CI(nsSystemPrincipal,
+                           nsIPrincipal,
+                           nsISerializable)
+NS_IMPL_CI_INTERFACE_GETTER(nsSystemPrincipal,
+                            nsIPrincipal,
+                            nsISerializable)
+
+#define SYSTEM_PRINCIPAL_SPEC "[System Principal]"
+
+nsresult
+nsSystemPrincipal::GetScriptLocation(nsACString &aStr)
+{
+    aStr.AssignLiteral(SYSTEM_PRINCIPAL_SPEC);
+    return NS_OK;
+}
+
+///////////////////////////////////////
+// Methods implementing nsIPrincipal //
+///////////////////////////////////////
+
+NS_IMETHODIMP
+nsSystemPrincipal::GetHashValue(uint32_t *result)
+{
+    *result = NS_PTR_TO_INT32(this);
+    return NS_OK;
+}
+
+NS_IMETHODIMP 
+nsSystemPrincipal::GetURI(nsIURI** aURI)
+{
+    *aURI = nullptr;
+    return NS_OK;
+}
+
+nsresult
+nsSystemPrincipal::GetOriginInternal(nsACString& aOrigin)
+{
+    aOrigin.AssignLiteral(SYSTEM_PRINCIPAL_SPEC);
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsSystemPrincipal::GetCsp(nsIContentSecurityPolicy** aCsp)
+{
+  *aCsp = nullptr;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsSystemPrincipal::SetCsp(nsIContentSecurityPolicy* aCsp)
+{
+  // Never destroy an existing CSP on the principal.
+  // This method should only be called in rare cases.
+
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsSystemPrincipal::EnsureCSP(nsIDOMDocument* aDocument,
+                             nsIContentSecurityPolicy** aCSP)
+{
+  // CSP on a system principal makes no sense
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsSystemPrincipal::GetPreloadCsp(nsIContentSecurityPolicy** aPreloadCSP)
+{
+  *aPreloadCSP = nullptr;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsSystemPrincipal::EnsurePreloadCSP(nsIDOMDocument* aDocument,
+                                    nsIContentSecurityPolicy** aPreloadCSP)
+{
+  // CSP on a system principal makes no sense
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsSystemPrincipal::GetDomain(nsIURI** aDomain)
+{
+    *aDomain = nullptr;
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsSystemPrincipal::SetDomain(nsIURI* aDomain)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsSystemPrincipal::GetBaseDomain(nsACString& aBaseDomain)
+{
+  // No base domain for chrome.
+  return NS_OK;
+}
+
+//////////////////////////////////////////
+// Methods implementing nsISerializable //
+//////////////////////////////////////////
+
+NS_IMETHODIMP
+nsSystemPrincipal::Read(nsIObjectInputStream* aStream)
+{
+    // no-op: CID is sufficient to identify the mSystemPrincipal singleton
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsSystemPrincipal::Write(nsIObjectOutputStream* aStream)
+{
+    // no-op: CID is sufficient to identify the mSystemPrincipal singleton
+    return NS_OK;
+}