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#include "crypto/crypto_timing.h"
#include "crypto/crypto_util.h"
#include "env-inl.h"
#include "node_errors.h"
#include "v8.h"
#include "node.h"
#include <openssl/crypto.h>
namespace node {
using v8::FunctionCallbackInfo;
using v8::Local;
using v8::Object;
using v8::Value;
namespace crypto {
namespace Timing {
void TimingSafeEqual(const FunctionCallbackInfo<Value>& args) {
// Moving the type checking into JS leads to test failures, most likely due
// to V8 inlining certain parts of the wrapper. Therefore, keep them in C++.
// Refs: https://github.com/nodejs/node/issues/34073.
Environment* env = Environment::GetCurrent(args);
if (!IsAnyByteSource(args[0])) {
THROW_ERR_INVALID_ARG_TYPE(
env, "The \"buf1\" argument must be an instance of "
"ArrayBuffer, Buffer, TypedArray, or DataView.");
return;
}
if (!IsAnyByteSource(args[1])) {
THROW_ERR_INVALID_ARG_TYPE(
env, "The \"buf2\" argument must be an instance of "
"ArrayBuffer, Buffer, TypedArray, or DataView.");
return;
}
ArrayBufferOrViewContents<char> buf1(args[0]);
ArrayBufferOrViewContents<char> buf2(args[1]);
if (buf1.size() != buf2.size()) {
THROW_ERR_CRYPTO_TIMING_SAFE_EQUAL_LENGTH(env);
return;
}
return args.GetReturnValue().Set(
CRYPTO_memcmp(buf1.data(), buf2.data(), buf1.size()) == 0);
}
void Initialize(Environment* env, Local<Object> target) {
env->SetMethodNoSideEffect(target, "timingSafeEqual", TimingSafeEqual);
}
void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
registry->Register(TimingSafeEqual);
}
} // namespace Timing
} // namespace crypto
} // namespace node
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