mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2025-10-31 19:25:46 +01:00
305 lines
9.0 KiB
C++
305 lines
9.0 KiB
C++
/*
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* Copyright (c) 2018-2019 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <mutex>
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#include <algorithm>
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#include <map>
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#include <string>
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#include <utility>
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#include <switch.h>
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#include <strings.h>
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#include <ctype.h>
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#include "setsys_settings_items.hpp"
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#include "../utils.hpp"
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#include "../ini.h"
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struct SettingsItemValue {
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size_t size;
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u8 *data;
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};
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std::map<std::string, SettingsItemValue> g_settings_items;
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static bool g_threw_fatal = false;
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static sts::os::Thread g_fatal_thread;
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static void FatalThreadFunc(void *arg) {
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svcSleepThread(5000000000ULL);
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fatalSimple(static_cast<Result>(reinterpret_cast<uintptr_t>(arg)));
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}
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static bool IsCorrectFormat(const char *str, size_t len) {
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if (len > 0 && str[len - 1] == '.') {
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return false;
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}
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for (size_t i = 0; i < len; i++) {
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const char c = *(str++);
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if ('a' <= c && c <= 'z') {
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continue;
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}
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if ('0' <= c && c <= '9') {
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continue;
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}
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if (c == '-' || c == '.' || c == '_') {
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continue;
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}
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return false;
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}
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return true;
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}
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Result SettingsItemManager::ValidateName(const char *name, size_t max_size) {
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if (name == nullptr) {
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return ResultSettingsItemNameNull;
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}
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const size_t name_len = strnlen(name, std::min(max_size, MaxNameLength + 1));
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if (name_len == 0) {
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return ResultSettingsItemNameEmpty;
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} else if (name_len > MaxNameLength) {
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return ResultSettingsItemNameTooLong;
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}
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if (!IsCorrectFormat(name, name_len)) {
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return ResultSettingsItemNameInvalidFormat;
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}
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return ResultSuccess;
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}
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Result SettingsItemManager::ValidateName(const char *name) {
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return ValidateName(name, MaxNameLength + 1);
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}
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Result SettingsItemManager::ValidateKey(const char *key, size_t max_size) {
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if (key == nullptr) {
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return ResultSettingsItemKeyNull;
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}
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const size_t key_len = strnlen(key, std::min(max_size, MaxKeyLength + 1));
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if (key_len == 0) {
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return ResultSettingsItemKeyEmpty;
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} else if (key_len > MaxKeyLength) {
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return ResultSettingsItemKeyTooLong;
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}
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if (!IsCorrectFormat(key, key_len)) {
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return ResultSettingsItemKeyInvalidFormat;
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}
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return ResultSuccess;
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}
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Result SettingsItemManager::ValidateKey(const char *key) {
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return ValidateKey(key, MaxKeyLength + 1);
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}
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static bool IsHexadecimal(const char *str) {
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while (*str) {
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if (isxdigit((unsigned char)*str)) {
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str++;
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} else {
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return false;
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}
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}
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return true;
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}
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static char hextoi(char c) {
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if ('a' <= c && c <= 'f') return c - 'a' + 0xA;
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if ('A' <= c && c <= 'F') return c - 'A' + 0xA;
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if ('0' <= c && c <= '9') return c - '0';
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return 0;
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}
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static Result ParseValue(const char *name, const char *key, const char *val_tup) {
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const char *delimiter = strchr(val_tup, '!');
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const char *value_str = delimiter + 1;
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const char *type = val_tup;
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if (delimiter == NULL) {
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return ResultSettingsItemValueInvalidFormat;
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}
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while (isspace((unsigned char)*type) && type != delimiter) {
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type++;
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}
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size_t type_len = delimiter - type;
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size_t value_len = strlen(value_str);
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if (delimiter == NULL || value_len == 0 || type_len == 0) {
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return ResultSettingsItemValueInvalidFormat;
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}
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std::string kv = std::string(name).append("!").append(key);
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SettingsItemValue value;
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if (strncasecmp(type, "str", type_len) == 0 || strncasecmp(type, "string", type_len) == 0) {
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/* String */
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value.size = value_len + 1;
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value.data = reinterpret_cast<u8 *>(strdup(value_str));
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if (value.data == nullptr) {
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return ResultSettingsItemValueAllocationFailed;
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}
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} else if (strncasecmp(type, "hex", type_len) == 0 || strncasecmp(type, "bytes", type_len) == 0) {
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/* hex */
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if (value_len % 2 || !IsHexadecimal(value_str)) {
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return ResultSettingsItemValueInvalidFormat;
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}
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value.size = value_len / 2;
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u8 *data = reinterpret_cast<u8 *>(malloc(value.size));
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if (data == nullptr) {
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return ResultSettingsItemValueAllocationFailed;
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}
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memset(data, 0, value.size);
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for (size_t i = 0; i < value_len; i++) {
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data[i >> 1] |= hextoi(value_str[i]) << (4 * (i & 1));
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}
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value.data = data;
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} else if (strncasecmp(type, "u8", type_len) == 0) {
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/* u8 */
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value.size = sizeof(u8);
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u8 *data = reinterpret_cast<u8 *>(malloc(value.size));
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if (data == nullptr) {
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return ResultSettingsItemValueAllocationFailed;
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}
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*data = (u8)(strtoul(value_str, nullptr, 0));
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value.data = reinterpret_cast<u8 *>(data);
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} else if (strncasecmp(type, "u16", type_len) == 0) {
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/* u16 */
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value.size = sizeof(u16);
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u16 *data = reinterpret_cast<u16 *>(malloc(value.size));
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if (data == nullptr) {
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return ResultSettingsItemValueAllocationFailed;
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}
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*data = (u16)(strtoul(value_str, nullptr, 0));
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value.data = reinterpret_cast<u8 *>(data);
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} else if (strncasecmp(type, "u32", type_len) == 0) {
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/* u32 */
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value.size = sizeof(u32);
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u32 *data = reinterpret_cast<u32 *>(malloc(value.size));
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if (data == nullptr) {
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return ResultSettingsItemValueAllocationFailed;
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}
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*data = (u32)(strtoul(value_str, nullptr, 0));
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value.data = reinterpret_cast<u8 *>(data);
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} else if (strncasecmp(type, "u64", type_len) == 0) {
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/* u64 */
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value.size = sizeof(u64);
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u64 *data = reinterpret_cast<u64 *>(malloc(value.size));
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if (data == nullptr) {
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return ResultSettingsItemValueAllocationFailed;
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}
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*data = (u64)(strtoul(value_str, nullptr, 0));
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value.data = reinterpret_cast<u8 *>(data);
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} else {
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return ResultSettingsItemValueInvalidFormat;
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}
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g_settings_items[kv] = value;
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return ResultSuccess;
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}
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static Result ParseSettingsItemValue(const char *name, const char *key, const char *value) {
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/* Validate name and key, then parse value. */
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R_TRY(SettingsItemManager::ValidateName(name));
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R_TRY(SettingsItemManager::ValidateKey(name));
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R_TRY(ParseValue(name, key, value));
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return ResultSuccess;
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}
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static int SettingsItemIniHandler(void *user, const char *name, const char *key, const char *value) {
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Result *user_res = reinterpret_cast<Result *>(user);
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/* Stop parsing after we fail to parse a value. */
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if (R_FAILED(*user_res)) {
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return 0;
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}
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*user_res = ParseSettingsItemValue(name, key, value);
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return R_SUCCEEDED(*user_res) ? 1 : 0;
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}
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static Result LoadConfigurationImpl() {
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/* Open file. */
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FsFile config_file;
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R_TRY(Utils::OpenSdFile("/atmosphere/system_settings.ini", FS_OPEN_READ, &config_file));
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ON_SCOPE_EXIT {
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fsFileClose(&config_file);
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};
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/* Allocate buffer. */
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std::string config_buf(0xFFFF, '\0');
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/* Read from file. */
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size_t actual_size;
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R_TRY(fsFileRead(&config_file, 0, config_buf.data(), config_buf.size(), FS_READOPTION_NONE, &actual_size));
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/* Parse. */
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Result parse_res = ResultSuccess;
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ini_parse_string(config_buf.c_str(), SettingsItemIniHandler, &parse_res);
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return parse_res;
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}
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void SettingsItemManager::LoadConfiguration() {
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const Result load_res = LoadConfigurationImpl();
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if (R_FAILED(load_res) && !g_threw_fatal) {
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/* Report error if we encountered one. */
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g_threw_fatal = true;
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g_fatal_thread.Initialize(&FatalThreadFunc, reinterpret_cast<void *>(load_res), 0x1000, 49);
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g_fatal_thread.Start();
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}
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}
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Result SettingsItemManager::GetValueSize(const char *name, const char *key, u64 *out_size) {
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const std::string kv = std::string(name).append("!").append(key);
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auto it = g_settings_items.find(kv);
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if (it == g_settings_items.end()) {
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return ResultSettingsItemNotFound;
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}
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*out_size = it->second.size;
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return ResultSuccess;
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}
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Result SettingsItemManager::GetValue(const char *name, const char *key, void *out, size_t max_size, u64 *out_size) {
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const std::string kv = std::string(name).append("!").append(key);
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auto it = g_settings_items.find(kv);
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if (it == g_settings_items.end()) {
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return ResultSettingsItemNotFound;
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}
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size_t copy_size = it->second.size;
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if (max_size < copy_size) {
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copy_size = max_size;
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}
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*out_size = copy_size;
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memcpy(out, it->second.data, copy_size);
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return ResultSuccess;
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}
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