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service/cfg: Make GenerateConsoleUniqueId() return a pair (#5321)

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Same behavior, but allows the use of structured bindings.
This commit is contained in:
Mat M 2020-05-04 06:21:43 -04:00 • committed by GitHub
parent 41abdb505c
commit 30414eeb4b
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3 changed files with 17 additions and 14 deletions
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15
src/core/hle/service/cfg/cfg.cpp
View file

@ -465,9 +465,7 @@ ResultCode Module::FormatConfig() {
if (!res.IsSuccess())
return res;
u32 random_number;
u64 console_id;
GenerateConsoleUniqueId(random_number, console_id);
const auto [random_number, console_id] = GenerateConsoleUniqueId();
u64_le console_id_le = console_id;
res = CreateConfigInfoBlk(ConsoleUniqueID1BlockID, sizeof(console_id_le), 0xE, &console_id_le);
@ -727,13 +725,18 @@ u8 Module::GetCountryCode() {
return block.country_code;
}
void Module::GenerateConsoleUniqueId(u32& random_number, u64& console_id) {
std::pair<u32, u64> Module::GenerateConsoleUniqueId() const {
CryptoPP::AutoSeededRandomPool rng;
random_number = rng.GenerateWord32(0, 0xFFFF);
const u32 random_number = rng.GenerateWord32(0, 0xFFFF);
u64_le local_friend_code_seed;
rng.GenerateBlock(reinterpret_cast<CryptoPP::byte*>(&local_friend_code_seed),
sizeof(local_friend_code_seed));
console_id = (local_friend_code_seed & 0x3FFFFFFFF) | (static_cast<u64>(random_number) << 48);
const u64 console_id =
(local_friend_code_seed & 0x3FFFFFFFF) | (static_cast<u64>(random_number) << 48);
return std::make_pair(random_number, console_id);
}
ResultCode Module::SetConsoleUniqueId(u32 random_number, u64 console_id) {

12
src/core/hle/service/cfg/cfg.h
View file

@ -7,6 +7,7 @@
#include <array>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "common/common_types.h"
#include "core/hle/service/service.h"
@ -383,12 +384,13 @@ public:
/**
* Generates a new random console unique id.
* @param random_number a random generated 16bit number stored at 0x90002, used for generating
* the
* console_id
* @param console_id the randomly created console id
*
* @returns A pair containing a random number and a random console ID.
*
* @note The random number is a random generated 16bit number stored at 0x90002, used for
* generating the console ID.
*/
void GenerateConsoleUniqueId(u32& random_number, u64& console_id);
std::pair<u32, u64> GenerateConsoleUniqueId() const;
/**
* Sets the random_number and the console unique id in the config savegame.