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c1f76abfaf
The benefit of std::string_view comes from the idea of avoiding copies (essentially acting as a non-owning view), however if we're just going to copy into a local variable immediately, there's not much benefit gained here.
212 lines
8.5 KiB
C++
212 lines
8.5 KiB
C++
// Copyright 2018 yuzu emulator team
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <array>
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#include <fstream>
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#include <locale>
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#include <sstream>
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#include <string_view>
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#include <mbedtls/sha256.h>
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#include "common/assert.h"
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#include "common/common_paths.h"
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#include "common/file_util.h"
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#include "common/logging/log.h"
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#include "core/crypto/key_manager.h"
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#include "core/settings.h"
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#include "key_manager.h"
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namespace Core::Crypto {
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static u8 ToHexNibble(char c1) {
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if (c1 >= 65 && c1 <= 70)
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return c1 - 55;
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if (c1 >= 97 && c1 <= 102)
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return c1 - 87;
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if (c1 >= 48 && c1 <= 57)
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return c1 - 48;
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throw std::logic_error("Invalid hex digit");
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}
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template <size_t Size>
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static std::array<u8, Size> HexStringToArray(std::string_view str) {
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std::array<u8, Size> out{};
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for (size_t i = 0; i < 2 * Size; i += 2) {
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auto d1 = str[i];
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auto d2 = str[i + 1];
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out[i / 2] = (ToHexNibble(d1) << 4) | ToHexNibble(d2);
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}
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return out;
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}
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std::array<u8, 16> operator""_array16(const char* str, size_t len) {
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if (len != 32)
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throw std::logic_error("Not of correct size.");
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return HexStringToArray<16>(str);
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}
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std::array<u8, 32> operator""_array32(const char* str, size_t len) {
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if (len != 64)
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throw std::logic_error("Not of correct size.");
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return HexStringToArray<32>(str);
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}
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KeyManager::KeyManager() {
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// Initialize keys
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const std::string hactool_keys_dir = FileUtil::GetHactoolConfigurationPath();
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const std::string yuzu_keys_dir = FileUtil::GetUserPath(FileUtil::UserPath::KeysDir);
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if (Settings::values.use_dev_keys) {
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dev_mode = true;
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AttemptLoadKeyFile(yuzu_keys_dir, hactool_keys_dir, "dev.keys", false);
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} else {
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dev_mode = false;
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AttemptLoadKeyFile(yuzu_keys_dir, hactool_keys_dir, "prod.keys", false);
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}
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AttemptLoadKeyFile(yuzu_keys_dir, hactool_keys_dir, "title.keys", true);
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}
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void KeyManager::LoadFromFile(const std::string& filename, bool is_title_keys) {
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std::ifstream file(filename);
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if (!file.is_open())
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return;
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std::string line;
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while (std::getline(file, line)) {
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std::vector<std::string> out;
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std::stringstream stream(line);
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std::string item;
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while (std::getline(stream, item, '='))
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out.push_back(std::move(item));
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if (out.size() != 2)
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continue;
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out[0].erase(std::remove(out[0].begin(), out[0].end(), ' '), out[0].end());
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out[1].erase(std::remove(out[1].begin(), out[1].end(), ' '), out[1].end());
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if (is_title_keys) {
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auto rights_id_raw = HexStringToArray<16>(out[0]);
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u128 rights_id{};
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std::memcpy(rights_id.data(), rights_id_raw.data(), rights_id_raw.size());
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Key128 key = HexStringToArray<16>(out[1]);
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SetKey(S128KeyType::Titlekey, key, rights_id[1], rights_id[0]);
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} else {
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std::transform(out[0].begin(), out[0].end(), out[0].begin(), ::tolower);
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if (s128_file_id.find(out[0]) != s128_file_id.end()) {
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const auto index = s128_file_id.at(out[0]);
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Key128 key = HexStringToArray<16>(out[1]);
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SetKey(index.type, key, index.field1, index.field2);
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} else if (s256_file_id.find(out[0]) != s256_file_id.end()) {
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const auto index = s256_file_id.at(out[0]);
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Key256 key = HexStringToArray<32>(out[1]);
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SetKey(index.type, key, index.field1, index.field2);
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}
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}
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}
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}
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void KeyManager::AttemptLoadKeyFile(const std::string& dir1, const std::string& dir2,
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const std::string& filename, bool title) {
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if (FileUtil::Exists(dir1 + DIR_SEP + filename))
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LoadFromFile(dir1 + DIR_SEP + filename, title);
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else if (FileUtil::Exists(dir2 + DIR_SEP + filename))
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LoadFromFile(dir2 + DIR_SEP + filename, title);
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}
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bool KeyManager::HasKey(S128KeyType id, u64 field1, u64 field2) const {
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return s128_keys.find({id, field1, field2}) != s128_keys.end();
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}
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bool KeyManager::HasKey(S256KeyType id, u64 field1, u64 field2) const {
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return s256_keys.find({id, field1, field2}) != s256_keys.end();
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}
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Key128 KeyManager::GetKey(S128KeyType id, u64 field1, u64 field2) const {
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if (!HasKey(id, field1, field2))
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return {};
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return s128_keys.at({id, field1, field2});
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}
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Key256 KeyManager::GetKey(S256KeyType id, u64 field1, u64 field2) const {
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if (!HasKey(id, field1, field2))
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return {};
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return s256_keys.at({id, field1, field2});
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}
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void KeyManager::SetKey(S128KeyType id, Key128 key, u64 field1, u64 field2) {
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s128_keys[{id, field1, field2}] = key;
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}
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void KeyManager::SetKey(S256KeyType id, Key256 key, u64 field1, u64 field2) {
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s256_keys[{id, field1, field2}] = key;
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}
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bool KeyManager::KeyFileExists(bool title) {
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const std::string hactool_keys_dir = FileUtil::GetHactoolConfigurationPath();
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const std::string yuzu_keys_dir = FileUtil::GetUserPath(FileUtil::UserPath::KeysDir);
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if (title) {
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return FileUtil::Exists(hactool_keys_dir + DIR_SEP + "title.keys") ||
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FileUtil::Exists(yuzu_keys_dir + DIR_SEP + "title.keys");
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}
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if (Settings::values.use_dev_keys) {
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return FileUtil::Exists(hactool_keys_dir + DIR_SEP + "dev.keys") ||
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FileUtil::Exists(yuzu_keys_dir + DIR_SEP + "dev.keys");
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}
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return FileUtil::Exists(hactool_keys_dir + DIR_SEP + "prod.keys") ||
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FileUtil::Exists(yuzu_keys_dir + DIR_SEP + "prod.keys");
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}
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const std::unordered_map<std::string, KeyIndex<S128KeyType>> KeyManager::s128_file_id = {
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{"master_key_00", {S128KeyType::Master, 0, 0}},
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{"master_key_01", {S128KeyType::Master, 1, 0}},
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{"master_key_02", {S128KeyType::Master, 2, 0}},
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{"master_key_03", {S128KeyType::Master, 3, 0}},
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{"master_key_04", {S128KeyType::Master, 4, 0}},
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{"package1_key_00", {S128KeyType::Package1, 0, 0}},
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{"package1_key_01", {S128KeyType::Package1, 1, 0}},
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{"package1_key_02", {S128KeyType::Package1, 2, 0}},
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{"package1_key_03", {S128KeyType::Package1, 3, 0}},
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{"package1_key_04", {S128KeyType::Package1, 4, 0}},
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{"package2_key_00", {S128KeyType::Package2, 0, 0}},
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{"package2_key_01", {S128KeyType::Package2, 1, 0}},
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{"package2_key_02", {S128KeyType::Package2, 2, 0}},
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{"package2_key_03", {S128KeyType::Package2, 3, 0}},
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{"package2_key_04", {S128KeyType::Package2, 4, 0}},
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{"titlekek_00", {S128KeyType::Titlekek, 0, 0}},
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{"titlekek_01", {S128KeyType::Titlekek, 1, 0}},
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{"titlekek_02", {S128KeyType::Titlekek, 2, 0}},
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{"titlekek_03", {S128KeyType::Titlekek, 3, 0}},
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{"titlekek_04", {S128KeyType::Titlekek, 4, 0}},
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{"eticket_rsa_kek", {S128KeyType::ETicketRSAKek, 0, 0}},
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{"key_area_key_application_00",
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{S128KeyType::KeyArea, 0, static_cast<u64>(KeyAreaKeyType::Application)}},
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{"key_area_key_application_01",
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{S128KeyType::KeyArea, 1, static_cast<u64>(KeyAreaKeyType::Application)}},
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{"key_area_key_application_02",
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{S128KeyType::KeyArea, 2, static_cast<u64>(KeyAreaKeyType::Application)}},
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{"key_area_key_application_03",
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{S128KeyType::KeyArea, 3, static_cast<u64>(KeyAreaKeyType::Application)}},
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{"key_area_key_application_04",
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{S128KeyType::KeyArea, 4, static_cast<u64>(KeyAreaKeyType::Application)}},
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{"key_area_key_ocean_00", {S128KeyType::KeyArea, 0, static_cast<u64>(KeyAreaKeyType::Ocean)}},
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{"key_area_key_ocean_01", {S128KeyType::KeyArea, 1, static_cast<u64>(KeyAreaKeyType::Ocean)}},
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{"key_area_key_ocean_02", {S128KeyType::KeyArea, 2, static_cast<u64>(KeyAreaKeyType::Ocean)}},
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{"key_area_key_ocean_03", {S128KeyType::KeyArea, 3, static_cast<u64>(KeyAreaKeyType::Ocean)}},
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{"key_area_key_ocean_04", {S128KeyType::KeyArea, 4, static_cast<u64>(KeyAreaKeyType::Ocean)}},
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{"key_area_key_system_00", {S128KeyType::KeyArea, 0, static_cast<u64>(KeyAreaKeyType::System)}},
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{"key_area_key_system_01", {S128KeyType::KeyArea, 1, static_cast<u64>(KeyAreaKeyType::System)}},
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{"key_area_key_system_02", {S128KeyType::KeyArea, 2, static_cast<u64>(KeyAreaKeyType::System)}},
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{"key_area_key_system_03", {S128KeyType::KeyArea, 3, static_cast<u64>(KeyAreaKeyType::System)}},
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{"key_area_key_system_04", {S128KeyType::KeyArea, 4, static_cast<u64>(KeyAreaKeyType::System)}},
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};
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const std::unordered_map<std::string, KeyIndex<S256KeyType>> KeyManager::s256_file_id = {
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{"header_key", {S256KeyType::Header, 0, 0}},
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{"sd_card_save_key", {S256KeyType::SDSave, 0, 0}},
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{"sd_card_nca_key", {S256KeyType::SDNCA, 0, 0}},
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};
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} // namespace Core::Crypto
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