1 files changed, 46 insertions, 0 deletions
diff --git a/netwerk/base/nsIRandomGenerator.idl b/netwerk/base/nsIRandomGenerator.idl
new file mode 100644
index 0000000000..576483b549
--- /dev/null
+++ b/netwerk/base/nsIRandomGenerator.idl
@@ -0,0 +1,46 @@
+/* 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 "nsISupports.idl"
+
+%{C++
+#include <type_traits>
+%}
+
+/**
+ * Interface used to generate random data.
+ *
+ * @threadsafe
+ */
+[scriptable, uuid(2362d97a-747a-4576-8863-697667309209)]
+interface nsIRandomGenerator : nsISupports {
+  /**
+   * Generates the specified amount of random bytes.
+   *
+   * @param aLength
+   *        The length of the data to generate.
+   * @param aBuffer
+   *        A buffer that contains random bytes of size aLength.
+   */
+  void generateRandomBytes(in unsigned long aLength,
+                           [retval, array, size_is(aLength)] out octet aBuffer);
+
+  /**
+   * Fills aBuffer with random bytes.
+   *
+   * @param aBuffer
+   *        A buffer to fill with random bytes.
+   * @param aLength
+   *        Length of aBuffer.
+   */
+  void generateRandomBytesInto([array, size_is(aLength)] in octet aBuffer,
+                               in unsigned long aLength);
+
+%{C++
+  template<typename T>
+  std::enable_if_t<!std::is_pointer_v<T>, nsresult> GenerateRandomBytesInto(T& aResult) {
+    return GenerateRandomBytesInto(reinterpret_cast<uint8_t*>(&aResult), sizeof(T));
+  }
+%}
+};