unleashed-firmware/lib/update_util/lfs_backup.c

#include "lfs_backup.h"

#include <toolbox/tar/tar_archive.h>

#include <bt/bt_settings_filename.h>
#include <bt/bt_service/bt_keys_filename.h>
#include <dolphin/helpers/dolphin_state_filename.h>
#include <desktop/helpers/slideshow_filename.h>
#include <desktop/desktop_settings_filename.h>
#include <notification/notification_settings_filename.h>

#define LFS_BACKUP_DEFAULT_LOCATION EXT_PATH(LFS_BACKUP_DEFAULT_FILENAME)

static void backup_name_converter(string_t filename) {
    if(string_empty_p(filename) || (string_get_char(filename, 0) == '.')) {
        return;
    }

    /* Filenames are already prefixed with '.' */
    const char* const names[] = {
        BT_SETTINGS_FILE_NAME,
        BT_KEYS_STORAGE_FILE_NAME,
        DESKTOP_SETTINGS_FILE_NAME,
        NOTIFICATION_SETTINGS_FILE_NAME,
        SLIDESHOW_FILE_NAME,
        DOLPHIN_STATE_FILE_NAME,
    };

    for(size_t i = 0; i < COUNT_OF(names); i++) {
        if(string_equal_str_p(filename, &names[i][1])) {
            string_set_str(filename, names[i]);
            return;
        }
    }
}

bool lfs_backup_create(Storage* storage, const char* destination) {
    const char* final_destination =
        destination && strlen(destination) ? destination : LFS_BACKUP_DEFAULT_LOCATION;
    return storage_int_backup(storage, final_destination) == FSE_OK;
}

bool lfs_backup_exists(Storage* storage, const char* source) {
    const char* final_source = source && strlen(source) ? source : LFS_BACKUP_DEFAULT_LOCATION;
    return storage_common_stat(storage, final_source, NULL) == FSE_OK;
}

bool lfs_backup_unpack(Storage* storage, const char* source) {
    const char* final_source = source && strlen(source) ? source : LFS_BACKUP_DEFAULT_LOCATION;
    return storage_int_restore(storage, final_source, backup_name_converter) == FSE_OK;
}