/* * This file is part of the MicroPython project, http://micropython.org/ * * The MIT License (MIT) * * Copyright (c) 2018 Artur Pacholec * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include #include #include "py/objproperty.h" #include "py/objstr.h" #include "py/runtime.h" #include "shared-bindings/bleio/Address.h" #include "shared-module/bleio/Address.h" #define ADDRESS_BYTE_LEN 12 STATIC uint8_t xdigit_8b_value(byte nibble1, byte nibble2) { return unichar_xdigit_value(nibble1) | (unichar_xdigit_value(nibble2) << 4); } //| .. currentmodule:: bleio //| //| :class:`Address` -- BLE address //| ========================================================= //| //| Encapsulates the address of a BLE device. //| //| .. class:: Address(address) //| //| Create a new Address object encapsulating the address value. //| The value itself can be one of: //| //| - a `str` value in the format of 'XXXXXXXXXXXX' or 'XX:XX:XX:XX:XX:XX' (12 hex digits) //| - a `bytes` or `bytearray` containing 6 bytes //| - another Address object //| //| :param address: The address to encapsulate //| //| .. attribute:: type //| //| The address type. One of: //| //| - `bleio.AddressType.PUBLIC` //| - `bleio.AddressType.RANDOM_STATIC` //| - `bleio.AddressType.RANDOM_PRIVATE_RESOLVABLE` //| - `bleio.AddressType.RANDOM_PRIVATE_NON_RESOLVABLE` //| STATIC mp_obj_t bleio_address_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) { enum { ARG_address }; static const mp_arg_t allowed_args[] = { { MP_QSTR_address, MP_ARG_REQUIRED | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} }, }; mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)]; mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args); bleio_address_obj_t *self = m_new_obj(bleio_address_obj_t); self->base.type = &bleio_address_type; self->type = ADDRESS_PUBLIC; const mp_obj_t address = args[ARG_address].u_obj; if (MP_OBJ_IS_STR(address)) { GET_STR_DATA_LEN(address, str, str_len); size_t value_index = 0; int str_index = str_len; bool error = false; // Loop until fewer than two characters left. while (str_index >= 1 && value_index < sizeof(self->value)) { if (str[str_index] == ':') { // Skip colon separators. str_index--; continue; } if (!unichar_isxdigit(str[str_index]) || !unichar_isxdigit(str[str_index-1])) { error = true; break; } self->value[value_index] = xdigit_8b_value(str[str_index], str[str_index-1]); value_index += 1; str_index -= 2; } // Check for correct number of hex digits and no parsing errors. if (error || value_index != ADDRESS_BYTE_LEN || str_index != -1) { mp_raise_ValueError_varg(translate("Address is not %d bytes long or is in wrong format"), ADDRESS_BYTE_LEN); } } else if (MP_OBJ_IS_TYPE(address, &mp_type_bytearray) || MP_OBJ_IS_TYPE(address, &mp_type_bytes)) { mp_buffer_info_t buf_info; mp_get_buffer_raise(address, &buf_info, MP_BUFFER_READ); if (buf_info.len != BLEIO_ADDRESS_BYTES) { mp_raise_ValueError_varg(translate("Address must be %d bytes long"), BLEIO_ADDRESS_BYTES); } for (size_t b = 0; b < BLEIO_ADDRESS_BYTES; ++b) { self->value[BLEIO_ADDRESS_BYTES - b - 1] = ((uint8_t*)buf_info.buf)[b]; } } else if (MP_OBJ_IS_TYPE(address, &bleio_address_type)) { // deep copy bleio_address_obj_t *other = MP_OBJ_TO_PTR(address); self->type = other->type; memcpy(self->value, other->value, BLEIO_ADDRESS_BYTES); } return MP_OBJ_FROM_PTR(self); } STATIC void bleio_address_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) { bleio_address_obj_t *self = MP_OBJ_TO_PTR(self_in); mp_printf(print, "Address('%02x:%02x:%02x:%02x:%02x:%02x')", self->value[5], self->value[4], self->value[3], self->value[2], self->value[1], self->value[0]); } STATIC mp_obj_t bleio_address_get_type(mp_obj_t self_in) { bleio_address_obj_t *self = MP_OBJ_TO_PTR(self_in); if (self->type == ADDRESS_PUBLIC) { return (mp_obj_t)&bleio_addresstype_public_obj; } else if (self->type == ADDRESS_RANDOM_STATIC) { return (mp_obj_t)&bleio_addresstype_random_static_obj; } else if (self->type == ADDRESS_RANDOM_PRIVATE_RESOLVABLE) { return (mp_obj_t)&bleio_addresstype_random_private_resolvable_obj; } else if (self->type == ADDRESS_RANDOM_PRIVATE_NON_RESOLVABLE) { return (mp_obj_t)&bleio_addresstype_random_private_non_resolvable_obj; } return mp_const_none; } MP_DEFINE_CONST_FUN_OBJ_1(bleio_address_get_type_obj, bleio_address_get_type); const mp_obj_property_t bleio_address_type_obj = { .base.type = &mp_type_property, .proxy = {(mp_obj_t)&bleio_address_get_type_obj, (mp_obj_t)&mp_const_none_obj, (mp_obj_t)&mp_const_none_obj}, }; STATIC const mp_rom_map_elem_t bleio_address_locals_dict_table[] = { { MP_ROM_QSTR(MP_QSTR_type), MP_ROM_PTR(&bleio_address_type_obj) }, }; STATIC MP_DEFINE_CONST_DICT(bleio_address_locals_dict, bleio_address_locals_dict_table); const mp_obj_type_t bleio_address_type = { { &mp_type_type }, .name = MP_QSTR_Address, .print = bleio_address_print, .make_new = bleio_address_make_new, .locals_dict = (mp_obj_dict_t*)&bleio_address_locals_dict };