/* * This file is part of the Micro Python project, http://micropython.org/ * * The MIT License (MIT) * * Copyright (c) 2013, 2014 Damien P. George * Copyright (c) 2015 Daniel Campora * * 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 #include "py/obj.h" #include "py/nlr.h" #include "netutils.h" // Takes an array with a raw IPv4 address and returns something like '192.168.0.1'. mp_obj_t netutils_format_ipv4_addr(uint8_t *ip, netutils_endian_t endian) { char ip_str[16]; mp_uint_t ip_len; if (endian == NETUTILS_LITTLE) { ip_len = snprintf(ip_str, 16, "%u.%u.%u.%u", ip[3], ip[2], ip[1], ip[0]); } else { ip_len = snprintf(ip_str, 16, "%u.%u.%u.%u", ip[0], ip[1], ip[2], ip[3]); } return mp_obj_new_str(ip_str, ip_len, false); } // Takes an array with a raw IP address, and a port, and returns a net-address // tuple such as ('192.168.0.1', 8080). mp_obj_t netutils_format_inet_addr(uint8_t *ip, mp_uint_t port, netutils_endian_t endian) { mp_obj_t tuple[2] = { tuple[0] = netutils_format_ipv4_addr(ip, endian), tuple[1] = mp_obj_new_int(port), }; return mp_obj_new_tuple(2, tuple); } void netutils_parse_ipv4_addr(mp_obj_t addr_in, uint8_t *out_ip, netutils_endian_t endian) { mp_uint_t addr_len; const char *addr_str = mp_obj_str_get_data(addr_in, &addr_len); if (addr_len == 0) { // special case of no address given memset(out_ip, 0, NETUTILS_IPV4ADDR_BUFSIZE); return; } const char *s = addr_str; const char *s_top = addr_str + addr_len; for (mp_uint_t i = 3 ; ; i--) { mp_uint_t val = 0; for (; s < s_top && *s != '.'; s++) { val = val * 10 + *s - '0'; } if (endian == NETUTILS_LITTLE) { out_ip[i] = val; } else { out_ip[NETUTILS_IPV4ADDR_BUFSIZE - 1 - i] = val; } if (i == 0 && s == s_top) { return; } else if (i > 0 && s < s_top && *s == '.') { s++; } else { nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "invalid arguments")); } } } // Takes an address of the form ('192.168.0.1', 8080), returns the port and // puts IP in out_ip (which must take at least IPADDR_BUF_SIZE bytes). mp_uint_t netutils_parse_inet_addr(mp_obj_t addr_in, uint8_t *out_ip, netutils_endian_t endian) { mp_obj_t *addr_items; mp_obj_get_array_fixed_n(addr_in, 2, &addr_items); netutils_parse_ipv4_addr(addr_items[0], out_ip, endian); return mp_obj_get_int(addr_items[1]); }