116 lines
4.0 KiB
C
116 lines
4.0 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2020 Scott Shawcroft for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "py/objexcept.h"
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#include "py/objstr.h"
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#include "py/parsenum.h"
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#include "py/runtime.h"
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#include "shared-bindings/ipaddress/__init__.h"
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#include "shared-bindings/ipaddress/IPv4Address.h"
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//| """
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//| The `ipaddress` module provides types for IP addresses. It is a subset of CPython's ipaddress
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//| module.
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//| """
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//|
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bool ipaddress_parse_ipv4address(const char *str_data, size_t str_len, uint32_t *ip_out) {
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size_t period_count = 0;
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size_t period_index[4] = {0, 0, 0, str_len};
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for (size_t i = 0; i < str_len; i++) {
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if (str_data[i] == '.') {
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if (period_count < 3) {
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period_index[period_count] = i;
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}
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period_count++;
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}
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}
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if (period_count > 3) {
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return false;
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}
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size_t last_period = 0;
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if (ip_out != NULL) {
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*ip_out = 0;
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}
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for (size_t i = 0; i < 4; i++) {
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// Catch exceptions thrown by mp_parse_num_integer
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nlr_buf_t nlr;
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mp_obj_t octet;
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if (nlr_push(&nlr) == 0) {
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octet = mp_parse_num_integer((const char *)str_data + last_period, period_index[i] - last_period, 10, NULL);
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nlr_pop();
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} else {
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return false;
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}
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last_period = period_index[i] + 1;
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if (ip_out != NULL) {
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mp_int_t int_octet = MP_OBJ_SMALL_INT_VALUE(octet);
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*ip_out |= int_octet << (i * 8);
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}
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}
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return true;
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}
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//| def ip_address(obj: Union[int, str]) -> IPv4Address:
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//| """Return a corresponding IP address object or raise ValueError if not possible."""
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//| ...
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//|
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STATIC mp_obj_t ipaddress_ip_address(mp_obj_t ip_in) {
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uint32_t value;
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if (mp_obj_get_int_maybe(ip_in, (mp_int_t *)&value)) {
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// We're done.
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} else if (mp_obj_is_str(ip_in)) {
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GET_STR_DATA_LEN(ip_in, str_data, str_len);
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if (!ipaddress_parse_ipv4address((const char *)str_data, str_len, &value)) {
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mp_raise_ValueError(MP_ERROR_TEXT("Not a valid IP string"));
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}
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} else {
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mp_raise_ValueError(MP_ERROR_TEXT("Only int or string supported for ip"));
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}
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return common_hal_ipaddress_new_ipv4address(value);
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}
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MP_DEFINE_CONST_FUN_OBJ_1(ipaddress_ip_address_obj, ipaddress_ip_address);
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STATIC const mp_rom_map_elem_t ipaddress_module_globals_table[] = {
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{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_ipaddress) },
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{ MP_ROM_QSTR(MP_QSTR_ip_address), MP_ROM_PTR(&ipaddress_ip_address_obj) },
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{ MP_ROM_QSTR(MP_QSTR_IPv4Address), MP_ROM_PTR(&ipaddress_ipv4address_type) },
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};
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STATIC MP_DEFINE_CONST_DICT(ipaddress_module_globals, ipaddress_module_globals_table);
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const mp_obj_module_t ipaddress_module = {
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.base = { &mp_type_module },
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.globals = (mp_obj_dict_t *)&ipaddress_module_globals,
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};
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MP_REGISTER_MODULE(MP_QSTR_ipaddress, ipaddress_module);
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