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trezor-core
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modtrezorconfig: prepare for norcow usage

This commit is contained in:
Pavol Rusnak 2016-10-14 18:40:30 +02:00
parent ce638fe94a
commit bf919e9192
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GPG Key ID: 91F3B339B9A02A3D
1 changed files with 30 additions and 2 deletions
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32
extmod/modtrezorconfig/modtrezorconfig.c
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@ -16,6 +16,14 @@
#if MICROPY_PY_TREZORCONFIG
// temporary function stubs from norcow
void norcow_init(void) { }
bool norcow_get(uint16_t key, const void **val, uint32_t *len) { *val = "Works!"; *len = 6; return true; }
bool norcow_set(uint16_t key, const void *val, uint32_t len) { return true; }
// end
typedef struct _mp_obj_Config_t {
mp_obj_base_t base;
} mp_obj_Config_t;
@ -24,6 +32,7 @@ STATIC mp_obj_t mod_TrezorConfig_Config_make_new(const mp_obj_type_t *type, size
mp_arg_check_num(n_args, n_kw, 0, 0, false);
mp_obj_Config_t *o = m_new_obj(mp_obj_Config_t);
o->base.type = type;
norcow_init();
return MP_OBJ_FROM_PTR(o);
}
@ -32,16 +41,35 @@ STATIC mp_obj_t mod_TrezorConfig_Config_make_new(const mp_obj_type_t *type, size
/// Gets a value of given key for given app (or None if not set).
/// '''
STATIC mp_obj_t mod_TrezorConfig_Config_get(mp_obj_t self, mp_obj_t app, mp_obj_t key) {
return mp_const_none;
uint8_t a = mp_obj_get_int(app);
uint8_t k = mp_obj_get_int(key);
uint16_t appkey = a << 8 | k;
const void *val;
uint32_t len;
bool r = norcow_get(appkey, &val, &len);
if (!r) return mp_const_none;
vstr_t vstr;
vstr_init_len(&vstr, len);
memcpy(vstr.buf, val, len);
return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_3(mod_TrezorConfig_Config_get_obj, mod_TrezorConfig_Config_get);
/// def trezor.config.set(app: int, key: int) -> bool:
/// def trezor.config.set(app: int, key: int, value: bytes) -> None:
/// '''
/// Sets a value of given key for given app.
/// Returns True on success.
/// '''
STATIC mp_obj_t mod_TrezorConfig_Config_set(size_t n_args, const mp_obj_t *args) {
uint8_t a = mp_obj_get_int(args[1]);
uint8_t k = mp_obj_get_int(args[2]);
uint16_t appkey = a << 8 | k;
mp_buffer_info_t value;
mp_get_buffer_raise(args[3], &value, MP_BUFFER_READ);
bool r = norcow_set(appkey, value.buf, value.len);
if (!r) {
mp_raise_ValueError("Could not save value");
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mod_TrezorConfig_Config_set_obj, 4, 4, mod_TrezorConfig_Config_set);