micropython/cc3200/mods/modnetwork.c

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/*
* 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 <std.h>
#include <stdint.h>
#include <string.h>
#include "mpconfig.h"
#include MICROPY_HAL_H
#include "nlr.h"
#include "misc.h"
#include "qstr.h"
#include "obj.h"
#include "objlist.h"
#include "runtime.h"
#include "modnetwork.h"
#include "mpexception.h"
#include "mpstate.h"
/// \module network - network configuration
///
/// This module provides network drivers and routing configuration.
void mod_network_init(void) {
mp_obj_list_init(&MP_STATE_PORT(mod_network_nic_list), 0);
}
void mod_network_register_nic(mp_obj_t nic) {
for (mp_uint_t i = 0; i < MP_STATE_PORT(mod_network_nic_list).len; i++) {
if (MP_STATE_PORT(mod_network_nic_list).items[i] == nic) {
// nic already registered
return;
}
}
// nic not registered so add to list
mp_obj_list_append(&MP_STATE_PORT(mod_network_nic_list), nic);
}
mp_obj_t mod_network_find_nic(const uint8_t *ip) {
// find a NIC that is suited to given IP address
for (mp_uint_t i = 0; i < MP_STATE_PORT(mod_network_nic_list).len; i++) {
mp_obj_t nic = MP_STATE_PORT(mod_network_nic_list).items[i];
return nic;
}
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, mpexception_os_resource_not_avaliable));
}
STATIC mp_obj_t network_route(void) {
return &MP_STATE_PORT(mod_network_nic_list);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_0(network_route_obj, network_route);
STATIC const mp_map_elem_t mp_module_network_globals_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_network) },
{ MP_OBJ_NEW_QSTR(MP_QSTR_WLAN), (mp_obj_t)&mod_network_nic_type_wlan },
{ MP_OBJ_NEW_QSTR(MP_QSTR_route), (mp_obj_t)&network_route_obj },
};
STATIC MP_DEFINE_CONST_DICT(mp_module_network_globals, mp_module_network_globals_table);
const mp_obj_module_t mp_module_network = {
.base = { &mp_type_module },
.name = MP_QSTR_network,
.globals = (mp_obj_dict_t*)&mp_module_network_globals,
};
/******************************************************************************/
// Miscellaneous helpers
void mod_network_convert_ipv4_endianness(uint8_t *ip) {
uint8_t ip0 = ip[0]; ip[0] = ip[3]; ip[3] = ip0;
uint8_t ip1 = ip[1]; ip[1] = ip[2]; ip[2] = ip1;
}
// Takes an address of the form '192.168.0.1' and converts it to network format
// in out_ip (big endian, so the 192 is the first byte).
void mod_network_parse_ipv4_addr(mp_obj_t addr_in, uint8_t *out_ip) {
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, MOD_NETWORK_IPV4ADDR_BUF_SIZE);
return;
}
const char *s = addr_str;
const char *s_top = addr_str + addr_len;
for (mp_uint_t i = 0;; i++) {
mp_uint_t val = 0;
for (; s < s_top && *s != '.'; s++) {
val = val * 10 + *s - '0';
}
out_ip[i] = val;
if (i == 3 && s == s_top) {
return;
} else if (i < 3 && s < s_top && *s == '.') {
s++;
} else {
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, mpexception_value_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 mod_network_parse_inet_addr(mp_obj_t addr_in, uint8_t *out_ip) {
mp_obj_t *addr_items;
mp_obj_get_array_fixed_n(addr_in, 2, &addr_items);
mod_network_parse_ipv4_addr(addr_items[0], out_ip);
return mp_obj_get_int(addr_items[1]);
}
// Takes an array with a raw IPv4 address and returns something like '192.168.0.1'.
mp_obj_t mod_network_format_ipv4_addr(uint8_t *ip) {
char ip_str[16];
mp_uint_t 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 mod_network_format_inet_addr(uint8_t *ip, mp_uint_t port) {
mp_obj_t tuple[2] = {
tuple[0] = mod_network_format_ipv4_addr(ip),
tuple[1] = mp_obj_new_int(port),
};
return mp_obj_new_tuple(2, tuple);
}