95 lines
3.5 KiB
C
95 lines
3.5 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) 2013, 2014 Damien P. George
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* Copyright (c) 2015 Daniel Campora
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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 <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include "py/runtime.h"
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#include "shared/netutils/netutils.h"
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// Takes an array with a raw IPv4 address and returns something like '192.168.0.1'.
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mp_obj_t netutils_format_ipv4_addr(uint8_t *ip, netutils_endian_t endian) {
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char ip_str[16];
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mp_uint_t ip_len;
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if (endian == NETUTILS_LITTLE) {
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ip_len = snprintf(ip_str, 16, "%u.%u.%u.%u", ip[3], ip[2], ip[1], ip[0]);
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} else {
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ip_len = snprintf(ip_str, 16, "%u.%u.%u.%u", ip[0], ip[1], ip[2], ip[3]);
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}
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return mp_obj_new_str(ip_str, ip_len);
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}
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// Takes an array with a raw IP address, and a port, and returns a net-address
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// tuple such as ('192.168.0.1', 8080).
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mp_obj_t netutils_format_inet_addr(uint8_t *ip, mp_uint_t port, netutils_endian_t endian) {
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mp_obj_t tuple[2] = {
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tuple[0] = netutils_format_ipv4_addr(ip, endian),
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tuple[1] = mp_obj_new_int(port),
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};
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return mp_obj_new_tuple(2, tuple);
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}
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void netutils_parse_ipv4_addr(mp_obj_t addr_in, uint8_t *out_ip, netutils_endian_t endian) {
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size_t addr_len;
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const char *addr_str = mp_obj_str_get_data(addr_in, &addr_len);
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if (addr_len == 0) {
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// special case of no address given
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memset(out_ip, 0, NETUTILS_IPV4ADDR_BUFSIZE);
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return;
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}
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const char *s = addr_str;
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const char *s_top = addr_str + addr_len;
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for (mp_uint_t i = 3; ; i--) {
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mp_uint_t val = 0;
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for (; s < s_top && *s != '.'; s++) {
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val = val * 10 + *s - '0';
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}
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if (endian == NETUTILS_LITTLE) {
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out_ip[i] = val;
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} else {
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out_ip[NETUTILS_IPV4ADDR_BUFSIZE - 1 - i] = val;
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}
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if (i == 0 && s == s_top) {
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return;
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} else if (i > 0 && s < s_top && *s == '.') {
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s++;
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} else {
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mp_raise_ValueError(MP_ERROR_TEXT("invalid arguments"));
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}
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}
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}
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// Takes an address of the form ('192.168.0.1', 8080), returns the port and
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// puts IP in out_ip (which must take at least IPADDR_BUF_SIZE bytes).
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mp_uint_t netutils_parse_inet_addr(mp_obj_t addr_in, uint8_t *out_ip, netutils_endian_t endian) {
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mp_obj_t *addr_items;
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mp_obj_get_array_fixed_n(addr_in, 2, &addr_items);
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netutils_parse_ipv4_addr(addr_items[0], out_ip, endian);
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return mp_obj_get_int(addr_items[1]);
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}
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