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/*
* (C) 2018 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include <botan/ffi.h>
#include <botan/internal/ffi_util.h>
#if defined(BOTAN_HAS_TOTP)
#include <botan/totp.h>
#endif
extern "C" {
using namespace Botan_FFI;
#if defined(BOTAN_HAS_TOTP)
BOTAN_FFI_DECLARE_STRUCT(botan_totp_struct, Botan::TOTP, 0x3D9D2CD1);
#endif
int botan_totp_init(botan_totp_t* totp,
const uint8_t key[], size_t key_len,
const char* hash_algo,
size_t digits,
size_t time_step)
{
if(totp == nullptr || key == nullptr || hash_algo == nullptr)
return BOTAN_FFI_ERROR_NULL_POINTER;
*totp = nullptr;
#if defined(BOTAN_HAS_TOTP)
return ffi_guard_thunk(BOTAN_CURRENT_FUNCTION, [=]() -> int {
*totp = new botan_totp_struct(
new Botan::TOTP(key, key_len, hash_algo, digits, time_step));
return BOTAN_FFI_SUCCESS;
});
#else
BOTAN_UNUSED(totp, key, key_len, hash_algo, digits);
return BOTAN_FFI_ERROR_NOT_IMPLEMENTED;
#endif
}
int botan_totp_destroy(botan_totp_t totp)
{
#if defined(BOTAN_HAS_TOTP)
return BOTAN_FFI_CHECKED_DELETE(totp);
#else
BOTAN_UNUSED(totp);
return BOTAN_FFI_ERROR_NOT_IMPLEMENTED;
#endif
}
int botan_totp_generate(botan_totp_t totp,
uint32_t* totp_code,
uint64_t timestamp)
{
#if defined(BOTAN_HAS_TOTP)
if(totp == nullptr || totp_code == nullptr)
return BOTAN_FFI_ERROR_NULL_POINTER;
return BOTAN_FFI_DO(Botan::TOTP, totp, t, {
*totp_code = t.generate_totp(timestamp);
});
#else
BOTAN_UNUSED(totp, totp_code, timestamp);
return BOTAN_FFI_ERROR_NOT_IMPLEMENTED;
#endif
}
int botan_totp_check(botan_totp_t totp,
uint32_t totp_code,
uint64_t timestamp,
size_t acceptable_clock_drift)
{
#if defined(BOTAN_HAS_TOTP)
return BOTAN_FFI_DO(Botan::TOTP, totp, t, {
const bool ok = t.verify_totp(totp_code, timestamp, acceptable_clock_drift);
return (ok ? BOTAN_FFI_SUCCESS : BOTAN_FFI_INVALID_VERIFIER);
});
#else
BOTAN_UNUSED(totp, next_timestamp, totp_code, timestamp, resync_range);
return BOTAN_FFI_ERROR_NOT_IMPLEMENTED;
#endif
}
}
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