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telemetry_session: Use a std::array in GenerateTelemetryId() 

We don't need to potentially heap-allocate a std::string instance here,
given the data is known ahead of time. We can just place it within an
array and pass this to the mbedtls functions.
master
Lioncash 2018-10-09 14:42:49 +07:00
parent 561d79e034
commit 8723cc8798
1 changed files with 4 additions and 2 deletions
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6
src/core/telemetry_session.cpp
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@ -2,6 +2,8 @@
// Licensed under GPLv2 or any later version // Licensed under GPLv2 or any later version
// Refer to the license.txt file included. // Refer to the license.txt file included.
#include <array>
#include "common/assert.h" #include "common/assert.h"
#include "common/common_types.h" #include "common/common_types.h"
#include "common/file_util.h" #include "common/file_util.h"
@ -28,11 +30,11 @@ static u64 GenerateTelemetryId() {
mbedtls_entropy_context entropy; mbedtls_entropy_context entropy;
mbedtls_entropy_init(&entropy); mbedtls_entropy_init(&entropy);
mbedtls_ctr_drbg_context ctr_drbg; mbedtls_ctr_drbg_context ctr_drbg;
std::string personalization = "yuzu Telemetry ID"; constexpr std::array<char, 18> personalization{{"yuzu Telemetry ID"}};
mbedtls_ctr_drbg_init(&ctr_drbg); mbedtls_ctr_drbg_init(&ctr_drbg);
ASSERT(mbedtls_ctr_drbg_seed(&ctr_drbg, mbedtls_entropy_func, &entropy, ASSERT(mbedtls_ctr_drbg_seed(&ctr_drbg, mbedtls_entropy_func, &entropy,
reinterpret_cast<const unsigned char*>(personalization.c_str()), reinterpret_cast<const unsigned char*>(personalization.data()),
personalization.size()) == 0); personalization.size()) == 0);
ASSERT(mbedtls_ctr_drbg_random(&ctr_drbg, reinterpret_cast<unsigned char*>(&telemetry_id), ASSERT(mbedtls_ctr_drbg_random(&ctr_drbg, reinterpret_cast<unsigned char*>(&telemetry_id),
sizeof(u64)) == 0); sizeof(u64)) == 0);