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/* 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));
}
%}
};
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