1 files changed, 78 insertions, 0 deletions
diff --git a/caps/nsNullPrincipal.h b/caps/nsNullPrincipal.h
new file mode 100644
index 000000000..b29474773
--- /dev/null
+++ b/caps/nsNullPrincipal.h
@@ -0,0 +1,78 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/. */
+
+/**
+ * This is the principal that has no rights and can't be accessed by
+ * anything other than itself and chrome; null principals are not
+ * same-origin with anything but themselves.
+ */
+
+#ifndef nsNullPrincipal_h__
+#define nsNullPrincipal_h__
+
+#include "nsIPrincipal.h"
+#include "nsJSPrincipals.h"
+#include "nsIScriptSecurityManager.h"
+#include "nsCOMPtr.h"
+#include "nsIContentSecurityPolicy.h"
+
+#include "mozilla/BasePrincipal.h"
+
+class nsIDocShell;
+class nsIURI;
+
+#define NS_NULLPRINCIPAL_CID \
+{ 0xbd066e5f, 0x146f, 0x4472, \
+  { 0x83, 0x31, 0x7b, 0xfd, 0x05, 0xb1, 0xed, 0x90 } }
+#define NS_NULLPRINCIPAL_CONTRACTID "@mozilla.org/nullprincipal;1"
+
+#define NS_NULLPRINCIPAL_SCHEME "moz-nullprincipal"
+
+class nsNullPrincipal final : public mozilla::BasePrincipal
+{
+public:
+  // This should only be used by deserialization, and the factory constructor.
+  // Other consumers should use the Create and CreateWithInheritedAttributes
+  // methods.
+  nsNullPrincipal() {}
+
+  NS_DECL_NSISERIALIZABLE
+
+  NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr) override;
+  NS_IMETHOD GetHashValue(uint32_t* aHashValue) override;
+  NS_IMETHOD SetCsp(nsIContentSecurityPolicy* aCsp) override;
+  NS_IMETHOD GetURI(nsIURI** aURI) override;
+  NS_IMETHOD GetDomain(nsIURI** aDomain) override;
+  NS_IMETHOD SetDomain(nsIURI* aDomain) override;
+  NS_IMETHOD GetBaseDomain(nsACString& aBaseDomain) override;
+  nsresult GetOriginInternal(nsACString& aOrigin) override;
+
+  static already_AddRefed<nsNullPrincipal> CreateWithInheritedAttributes(nsIPrincipal* aInheritFrom);
+
+  static already_AddRefed<nsNullPrincipal> CreateWithInheritedAttributes(nsIDocShell* aDocShell);
+
+  static already_AddRefed<nsNullPrincipal>
+  Create(const mozilla::PrincipalOriginAttributes& aOriginAttributes = mozilla::PrincipalOriginAttributes());
+
+  nsresult Init(const mozilla::PrincipalOriginAttributes& aOriginAttributes = mozilla::PrincipalOriginAttributes());
+
+  virtual nsresult GetScriptLocation(nsACString &aStr) override;
+
+  PrincipalKind Kind() override { return eNullPrincipal; }
+
+ protected:
+  virtual ~nsNullPrincipal() {}
+
+  bool SubsumesInternal(nsIPrincipal* aOther, DocumentDomainConsideration aConsideration) override
+  {
+    return aOther == this;
+  }
+
+  bool MayLoadInternal(nsIURI* aURI) override;
+
+  nsCOMPtr<nsIURI> mURI;
+};
+
+#endif // nsNullPrincipal_h__