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unleashed-firmware/applications/plugins/totp/services/config/config.c

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#include "config.h"
#include <stdlib.h>
#include <string.h>
#include "../list/list.h"
#include "../../types/common.h"
#include "../../types/token_info.h"
#include "migrations/config_migration_v1_to_v2.h"
#define CONFIG_FILE_DIRECTORY_PATH "/ext/apps/Misc"
#define CONFIG_FILE_PATH CONFIG_FILE_DIRECTORY_PATH "/totp.conf"
#define CONFIG_FILE_BACKUP_PATH CONFIG_FILE_PATH ".backup"
uint8_t token_info_get_digits_as_int(TokenInfo* token_info) {
switch(token_info->digits) {
case TOTP_6_DIGITS:
return 6;
case TOTP_8_DIGITS:
return 8;
}
return 6;
}
void token_info_set_digits_from_int(TokenInfo* token_info, uint8_t digits) {
switch(digits) {
case 6:
token_info->digits = TOTP_6_DIGITS;
break;
case 8:
token_info->digits = TOTP_8_DIGITS;
break;
}
}
char* token_info_get_algo_as_cstr(TokenInfo* token_info) {
switch(token_info->algo) {
case SHA1:
return TOTP_CONFIG_TOKEN_ALGO_SHA1_NAME;
case SHA256:
return TOTP_CONFIG_TOKEN_ALGO_SHA256_NAME;
case SHA512:
return TOTP_CONFIG_TOKEN_ALGO_SHA512_NAME;
}
return NULL;
}
void token_info_set_algo_from_str(TokenInfo* token_info, FuriString* str) {
if(furi_string_cmpi_str(str, TOTP_CONFIG_TOKEN_ALGO_SHA1_NAME) == 0) {
token_info->algo = SHA1;
} else if(furi_string_cmpi_str(str, TOTP_CONFIG_TOKEN_ALGO_SHA256_NAME)) {
token_info->algo = SHA256;
} else if(furi_string_cmpi_str(str, TOTP_CONFIG_TOKEN_ALGO_SHA512_NAME)) {
token_info->algo = SHA512;
}
}
Storage* totp_open_storage() {
return furi_record_open(RECORD_STORAGE);
}
void totp_close_storage() {
furi_record_close(RECORD_STORAGE);
}
FlipperFormat* totp_open_config_file(Storage* storage) {
FlipperFormat* fff_data_file = flipper_format_file_alloc(storage);
if(storage_common_stat(storage, CONFIG_FILE_PATH, NULL) == FSE_OK) {
FURI_LOG_D(LOGGING_TAG, "Config file %s found", CONFIG_FILE_PATH);
if(!flipper_format_file_open_existing(fff_data_file, CONFIG_FILE_PATH)) {
FURI_LOG_E(LOGGING_TAG, "Error opening existing file %s", CONFIG_FILE_PATH);
totp_close_config_file(fff_data_file);
return NULL;
}
} else {
FURI_LOG_D(LOGGING_TAG, "Config file %s is not found. Will create new.", CONFIG_FILE_PATH);
if(storage_common_stat(storage, CONFIG_FILE_DIRECTORY_PATH, NULL) == FSE_NOT_EXIST) {
FURI_LOG_D(
LOGGING_TAG,
"Directory %s doesn't exist. Will create new.",
CONFIG_FILE_DIRECTORY_PATH);
if(!storage_simply_mkdir(storage, CONFIG_FILE_DIRECTORY_PATH)) {
FURI_LOG_E(LOGGING_TAG, "Error creating directory %s", CONFIG_FILE_DIRECTORY_PATH);
return NULL;
}
}
if(!flipper_format_file_open_new(fff_data_file, CONFIG_FILE_PATH)) {
totp_close_config_file(fff_data_file);
FURI_LOG_E(LOGGING_TAG, "Error creating new file %s", CONFIG_FILE_PATH);
return NULL;
}
flipper_format_write_header_cstr(
fff_data_file, CONFIG_FILE_HEADER, CONFIG_FILE_ACTUAL_VERSION);
float tmp_tz = 0;
flipper_format_write_comment_cstr(fff_data_file, " ");
flipper_format_write_comment_cstr(
fff_data_file,
"Timezone offset in hours. Important note: do not put '+' sign for positive values");
flipper_format_write_float(fff_data_file, TOTP_CONFIG_KEY_TIMEZONE, &tmp_tz, 1);
FuriString* temp_str = furi_string_alloc();
flipper_format_write_comment_cstr(fff_data_file, " ");
flipper_format_write_comment_cstr(fff_data_file, "=== TOKEN SAMPLE BEGIN ===");
flipper_format_write_comment_cstr(fff_data_file, " ");
flipper_format_write_comment_cstr(
fff_data_file, "# Token name which will be visible in the UI.");
furi_string_printf(temp_str, "%s: Sample token name", TOTP_CONFIG_KEY_TOKEN_NAME);
flipper_format_write_comment(fff_data_file, temp_str);
flipper_format_write_comment_cstr(fff_data_file, " ");
flipper_format_write_comment_cstr(
fff_data_file,
"# Plain token secret without spaces, dashes and etc, just pure alpha-numeric characters. Important note: plain token will be encrypted and replaced by TOTP app");
furi_string_printf(temp_str, "%s: plaintokensecret", TOTP_CONFIG_KEY_TOKEN_SECRET);
flipper_format_write_comment(fff_data_file, temp_str);
flipper_format_write_comment_cstr(fff_data_file, " ");
furi_string_printf(
temp_str,
" # Token hashing algorithm to use during code generation. Supported options are %s, %s and %s. If you are not use which one to use - use %s",
TOTP_CONFIG_TOKEN_ALGO_SHA1_NAME,
TOTP_CONFIG_TOKEN_ALGO_SHA256_NAME,
TOTP_CONFIG_TOKEN_ALGO_SHA512_NAME,
TOTP_CONFIG_TOKEN_ALGO_SHA1_NAME);
flipper_format_write_comment(fff_data_file, temp_str);
furi_string_printf(
temp_str, "%s: %s", TOTP_CONFIG_KEY_TOKEN_ALGO, TOTP_CONFIG_TOKEN_ALGO_SHA1_NAME);
flipper_format_write_comment(fff_data_file, temp_str);
flipper_format_write_comment_cstr(fff_data_file, " ");
flipper_format_write_comment_cstr(
fff_data_file,
"# How many digits there should be in generated code. Available options are 6 and 8. Majority websites requires 6 digits code, however some rare websites wants to get 8 digits code. If you are not sure which one to use - use 6");
furi_string_printf(temp_str, "%s: 6", TOTP_CONFIG_KEY_TOKEN_DIGITS);
flipper_format_write_comment(fff_data_file, temp_str);
flipper_format_write_comment_cstr(fff_data_file, " ");
flipper_format_write_comment_cstr(fff_data_file, "=== TOKEN SAMPLE END ===");
flipper_format_write_comment_cstr(fff_data_file, " ");
furi_string_free(temp_str);
if(!flipper_format_rewind(fff_data_file)) {
totp_close_config_file(fff_data_file);
FURI_LOG_E(LOGGING_TAG, "Rewind error");
return NULL;
}
}
return fff_data_file;
}
void totp_config_file_save_new_token_i(FlipperFormat* file, TokenInfo* token_info) {
flipper_format_seek_to_end(file);
flipper_format_write_string_cstr(file, TOTP_CONFIG_KEY_TOKEN_NAME, token_info->name);
flipper_format_write_hex(
file, TOTP_CONFIG_KEY_TOKEN_SECRET, token_info->token, token_info->token_length);
flipper_format_write_string_cstr(
file, TOTP_CONFIG_KEY_TOKEN_ALGO, token_info_get_algo_as_cstr(token_info));
uint32_t digits_count_as_uint32 = token_info_get_digits_as_int(token_info);
flipper_format_write_uint32(file, TOTP_CONFIG_KEY_TOKEN_DIGITS, &digits_count_as_uint32, 1);
}
void totp_config_file_save_new_token(TokenInfo* token_info) {
Storage* cfg_storage = totp_open_storage();
FlipperFormat* file = totp_open_config_file(cfg_storage);
totp_config_file_save_new_token_i(file, token_info);
totp_close_config_file(file);
totp_close_storage();
}
void totp_config_file_update_timezone_offset(float new_timezone_offset) {
Storage* cfg_storage = totp_open_storage();
FlipperFormat* file = totp_open_config_file(cfg_storage);
flipper_format_insert_or_update_float(file, TOTP_CONFIG_KEY_TIMEZONE, &new_timezone_offset, 1);
totp_close_config_file(file);
totp_close_storage();
}
void totp_full_save_config_file(PluginState* const plugin_state) {
Storage* storage = totp_open_storage();
FlipperFormat* fff_data_file = flipper_format_file_alloc(storage);
flipper_format_file_open_always(fff_data_file, CONFIG_FILE_PATH);
flipper_format_write_header_cstr(
fff_data_file, CONFIG_FILE_HEADER, CONFIG_FILE_ACTUAL_VERSION);
flipper_format_write_hex(
fff_data_file, TOTP_CONFIG_KEY_BASE_IV, &plugin_state->base_iv[0], TOTP_IV_SIZE);
flipper_format_write_hex(
fff_data_file,
TOTP_CONFIG_KEY_CRYPTO_VERIFY,
plugin_state->crypto_verify_data,
plugin_state->crypto_verify_data_length);
flipper_format_write_float(
fff_data_file, TOTP_CONFIG_KEY_TIMEZONE, &plugin_state->timezone_offset, 1);
flipper_format_write_bool(fff_data_file, TOTP_CONFIG_KEY_PINSET, &plugin_state->pin_set, 1);
ListNode* node = plugin_state->tokens_list;
while(node != NULL) {
TokenInfo* token_info = node->data;
totp_config_file_save_new_token_i(fff_data_file, token_info);
node = node->next;
}
totp_close_config_file(fff_data_file);
totp_close_storage();
}
void totp_config_file_load_base(PluginState* const plugin_state) {
Storage* storage = totp_open_storage();
FlipperFormat* fff_data_file = totp_open_config_file(storage);
plugin_state->timezone_offset = 0;
FuriString* temp_str = furi_string_alloc();
uint32_t file_version;
if(!flipper_format_read_header(fff_data_file, temp_str, &file_version)) {
FURI_LOG_E(LOGGING_TAG, "Missing or incorrect header");
furi_string_free(temp_str);
return;
}
if(file_version < CONFIG_FILE_ACTUAL_VERSION) {
FURI_LOG_I(
LOGGING_TAG,
"Obsolete config file version detected. Current version: %" PRIu32
"; Actual version: %" PRId16,
file_version,
CONFIG_FILE_ACTUAL_VERSION);
totp_close_config_file(fff_data_file);
if(storage_common_stat(storage, CONFIG_FILE_BACKUP_PATH, NULL) == FSE_OK) {
storage_simply_remove(storage, CONFIG_FILE_BACKUP_PATH);
}
if(storage_common_copy(storage, CONFIG_FILE_PATH, CONFIG_FILE_BACKUP_PATH) == FSE_OK) {
FURI_LOG_I(LOGGING_TAG, "Took config file backup to %s", CONFIG_FILE_BACKUP_PATH);
fff_data_file = totp_open_config_file(storage);
FlipperFormat* fff_backup_data_file = flipper_format_file_alloc(storage);
flipper_format_file_open_existing(fff_backup_data_file, CONFIG_FILE_BACKUP_PATH);
if(file_version == 1) {
if(totp_config_migrate_v1_to_v2(fff_data_file, fff_backup_data_file)) {
FURI_LOG_I(LOGGING_TAG, "Applied migration from v1 to v2");
} else {
FURI_LOG_W(LOGGING_TAG, "An error occurred during migration from v1 to v2");
}
}
flipper_format_file_close(fff_backup_data_file);
flipper_format_free(fff_backup_data_file);
flipper_format_rewind(fff_data_file);
} else {
FURI_LOG_E(
LOGGING_TAG,
"An error occurred during taking backup of %s into %s before migration",
CONFIG_FILE_PATH,
CONFIG_FILE_BACKUP_PATH);
}
}
if(!flipper_format_read_hex(
fff_data_file, TOTP_CONFIG_KEY_BASE_IV, &plugin_state->base_iv[0], TOTP_IV_SIZE)) {
FURI_LOG_D(LOGGING_TAG, "Missing base IV");
}
flipper_format_rewind(fff_data_file);
uint32_t crypto_size;
if(flipper_format_get_value_count(fff_data_file, TOTP_CONFIG_KEY_CRYPTO_VERIFY, &crypto_size) &&
crypto_size > 0) {
plugin_state->crypto_verify_data = malloc(sizeof(uint8_t) * crypto_size);
plugin_state->crypto_verify_data_length = crypto_size;
if(!flipper_format_read_hex(
fff_data_file,
TOTP_CONFIG_KEY_CRYPTO_VERIFY,
plugin_state->crypto_verify_data,
crypto_size)) {
FURI_LOG_D(LOGGING_TAG, "Missing crypto verify token");
free(plugin_state->crypto_verify_data);
plugin_state->crypto_verify_data = NULL;
plugin_state->crypto_verify_data_length = 0;
}
} else {
plugin_state->crypto_verify_data = NULL;
plugin_state->crypto_verify_data_length = 0;
}
flipper_format_rewind(fff_data_file);
if(!flipper_format_read_float(
fff_data_file, TOTP_CONFIG_KEY_TIMEZONE, &plugin_state->timezone_offset, 1)) {
plugin_state->timezone_offset = 0;
FURI_LOG_D(LOGGING_TAG, "Missing timezone offset information, defaulting to 0");
}
flipper_format_rewind(fff_data_file);
if(!flipper_format_read_bool(
fff_data_file, TOTP_CONFIG_KEY_PINSET, &plugin_state->pin_set, 1)) {
plugin_state->pin_set = true;
}
furi_string_free(temp_str);
totp_close_config_file(fff_data_file);
totp_close_storage();
}
void totp_config_file_load_tokens(PluginState* const plugin_state) {
Storage* storage = totp_open_storage();
FlipperFormat* fff_data_file = totp_open_config_file(storage);
FuriString* temp_str = furi_string_alloc();
uint32_t temp_data32;
if(!flipper_format_read_header(fff_data_file, temp_str, &temp_data32)) {
FURI_LOG_E(LOGGING_TAG, "Missing or incorrect header");
furi_string_free(temp_str);
return;
}
uint8_t index = 0;
bool has_any_plain_secret = false;
while(true) {
if(!flipper_format_read_string(fff_data_file, TOTP_CONFIG_KEY_TOKEN_NAME, temp_str)) {
break;
}
TokenInfo* tokenInfo = token_info_alloc();
const char* temp_cstr = furi_string_get_cstr(temp_str);
tokenInfo->name = (char*)malloc(strlen(temp_cstr) + 1);
strcpy(tokenInfo->name, temp_cstr);
uint32_t secret_bytes_count;
if(!flipper_format_get_value_count(
fff_data_file, TOTP_CONFIG_KEY_TOKEN_SECRET, &secret_bytes_count)) {
token_info_free(tokenInfo);
continue;
}
if(secret_bytes_count == 1) { // Plain secret key
if(!flipper_format_read_string(fff_data_file, TOTP_CONFIG_KEY_TOKEN_SECRET, temp_str)) {
token_info_free(tokenInfo);
continue;
}
temp_cstr = furi_string_get_cstr(temp_str);
token_info_set_secret(tokenInfo, temp_cstr, strlen(temp_cstr), &plugin_state->iv[0]);
has_any_plain_secret = true;
FURI_LOG_W(LOGGING_TAG, "Found token with plain secret");
} else { // encrypted
tokenInfo->token_length = secret_bytes_count;
tokenInfo->token = malloc(tokenInfo->token_length);
if(!flipper_format_read_hex(
fff_data_file,
TOTP_CONFIG_KEY_TOKEN_SECRET,
tokenInfo->token,
tokenInfo->token_length)) {
token_info_free(tokenInfo);
continue;
}
}
if(!flipper_format_read_string(fff_data_file, TOTP_CONFIG_KEY_TOKEN_ALGO, temp_str)) {
token_info_free(tokenInfo);
continue;
}
token_info_set_algo_from_str(tokenInfo, temp_str);
if(!flipper_format_read_uint32(
fff_data_file, TOTP_CONFIG_KEY_TOKEN_DIGITS, &temp_data32, 1)) {
token_info_free(tokenInfo);
continue;
}
token_info_set_digits_from_int(tokenInfo, temp_data32);
FURI_LOG_D(LOGGING_TAG, "Found token \"%s\"", tokenInfo->name);
if(plugin_state->tokens_list == NULL) {
plugin_state->tokens_list = list_init_head(tokenInfo);
} else {
list_add(plugin_state->tokens_list, tokenInfo);
}
index++;
}
plugin_state->tokens_count = index;
plugin_state->token_list_loaded = true;
FURI_LOG_D(LOGGING_TAG, "Found %" PRIu8 " tokens", index);
furi_string_free(temp_str);
totp_close_config_file(fff_data_file);
totp_close_storage();
if(has_any_plain_secret) {
totp_full_save_config_file(plugin_state);
}
}
void totp_close_config_file(FlipperFormat* file) {
if(file == NULL) return;
flipper_format_file_close(file);
flipper_format_free(file);
}
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