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120 lines
3.9 KiB
120 lines
3.9 KiB
/*
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* Copyright (c) Pavol Rusnak, SatoshiLabs
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*
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* Licensed under TREZOR License
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* see LICENSE file for details
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdint.h>
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#include "py/runtime.h"
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#include "norcow.h"
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#if MICROPY_PY_TREZORCONFIG
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/// class Config:
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/// '''
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/// Persistent key-value storage, with 16-bit keys and bytes values.
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/// '''
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typedef struct _mp_obj_Config_t {
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mp_obj_base_t base;
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} mp_obj_Config_t;
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/// def __init__(self):
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/// '''
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/// Initializes the storage.
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/// '''
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STATIC mp_obj_t mod_TrezorConfig_Config_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
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mp_arg_check_num(n_args, n_kw, 0, 0, false);
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mp_obj_Config_t *o = m_new_obj(mp_obj_Config_t);
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o->base.type = type;
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bool r = norcow_init();
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if (!r) {
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mp_raise_msg(&mp_type_RuntimeError, "Could not initialize storage");
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}
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return MP_OBJ_FROM_PTR(o);
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}
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/// def get(self, app: int, key: int) -> bytes:
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/// '''
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/// Gets a value of given key for given app (or empty bytes if not set).
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/// '''
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STATIC mp_obj_t mod_TrezorConfig_Config_get(mp_obj_t self, mp_obj_t app, mp_obj_t key) {
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uint8_t a = mp_obj_get_int(app);
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uint8_t k = mp_obj_get_int(key);
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uint16_t appkey = a << 8 | k, len;
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const void *val;
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bool r = norcow_get(appkey, &val, &len);
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if (!r || len == 0) {
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return mp_const_empty_bytes;
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}
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vstr_t vstr;
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vstr_init_len(&vstr, len);
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memcpy(vstr.buf, val, len);
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return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_3(mod_TrezorConfig_Config_get_obj, mod_TrezorConfig_Config_get);
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/// def set(self, app: int, key: int, value: bytes) -> None:
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/// '''
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/// Sets a value of given key for given app.
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/// Returns True on success.
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/// '''
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STATIC mp_obj_t mod_TrezorConfig_Config_set(size_t n_args, const mp_obj_t *args) {
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uint8_t a = mp_obj_get_int(args[1]);
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uint8_t k = mp_obj_get_int(args[2]);
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uint16_t appkey = a << 8 | k;
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mp_buffer_info_t value;
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mp_get_buffer_raise(args[3], &value, MP_BUFFER_READ);
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bool r = norcow_set(appkey, value.buf, value.len);
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if (!r) {
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mp_raise_msg(&mp_type_RuntimeError, "Could not save value");
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}
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mod_TrezorConfig_Config_set_obj, 4, 4, mod_TrezorConfig_Config_set);
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/// def wipe(self) -> None:
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/// '''
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/// Erases the whole config. Use with caution!
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/// '''
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STATIC mp_obj_t mod_TrezorConfig_Config_wipe(mp_obj_t self) {
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bool r = norcow_wipe();
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if (!r) {
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mp_raise_msg(&mp_type_RuntimeError, "Could not wipe storage");
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}
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_TrezorConfig_Config_wipe_obj, mod_TrezorConfig_Config_wipe);
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STATIC const mp_rom_map_elem_t mod_TrezorConfig_Config_locals_dict_table[] = {
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{ MP_ROM_QSTR(MP_QSTR_get), MP_ROM_PTR(&mod_TrezorConfig_Config_get_obj) },
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{ MP_ROM_QSTR(MP_QSTR_set), MP_ROM_PTR(&mod_TrezorConfig_Config_set_obj) },
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{ MP_ROM_QSTR(MP_QSTR_wipe), MP_ROM_PTR(&mod_TrezorConfig_Config_wipe_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(mod_TrezorConfig_Config_locals_dict, mod_TrezorConfig_Config_locals_dict_table);
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STATIC const mp_obj_type_t mod_TrezorConfig_Config_type = {
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{ &mp_type_type },
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.name = MP_QSTR_Config,
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.make_new = mod_TrezorConfig_Config_make_new,
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.locals_dict = (void*)&mod_TrezorConfig_Config_locals_dict,
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};
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STATIC const mp_rom_map_elem_t mp_module_TrezorConfig_globals_table[] = {
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{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_TrezorConfig) },
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{ MP_ROM_QSTR(MP_QSTR_Config), MP_ROM_PTR(&mod_TrezorConfig_Config_type) },
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};
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STATIC MP_DEFINE_CONST_DICT(mp_module_TrezorConfig_globals, mp_module_TrezorConfig_globals_table);
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const mp_obj_module_t mp_module_TrezorConfig = {
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.base = { &mp_type_module },
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.globals = (mp_obj_dict_t*)&mp_module_TrezorConfig_globals,
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};
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#endif // MICROPY_PY_TREZORCONFIG
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