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/*

* This file is part of the MicroPython project, http://micropython.org/

*

* The MIT License (MIT)

*

* Copyright (c) 2014 Damien P. George

*

* 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 <stdio.h>

#include <stdint.h>

#include <string.h>

#include "py/objlist.h"

#include "py/runtime.h"

#include "py/mphal.h"

#include "shared/netutils/netutils.h"

#include "modnetwork.h"

#if MICROPY_PY_NETWORK

#if MICROPY_PY_LWIP

#include "lwip/netif.h"

#include "lwip/timeouts.h"

#include "lwip/dns.h"

#include "lwip/dhcp.h"

#include "lwip/apps/mdns.h"

#endif

#if MICROPY_PY_NETWORK_CYW43 && MICROPY_PY_NETWORK_CYW43_USE_LIB_DRIVER

// So that CYW43_LINK_xxx constants are available to MICROPY_PORT_NETWORK_INTERFACES.

#include "lib/cyw43-driver/src/cyw43.h"

#endif

/// \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_deinit(void) {

}

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_OBJ_FROM_PTR(&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];

// TODO check IP suitability here

// mod_network_nic_type_t *nic_type = (mod_network_nic_type_t*)mp_obj_get_type(nic);

return nic;

}

mp_raise_msg(&mp_type_OSError, MP_ERROR_TEXT("no available NIC"));

}

STATIC mp_obj_t network_route(void) {

return MP_OBJ_FROM_PTR(&MP_STATE_PORT(mod_network_nic_list));

}

STATIC MP_DEFINE_CONST_FUN_OBJ_0(network_route_obj, network_route);

STATIC const mp_rom_map_elem_t mp_module_network_globals_table[] = {

{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_network) },

{ MP_ROM_QSTR(MP_QSTR_route), MP_ROM_PTR(&network_route_obj) },

// Defined per port in mpconfigport.h

MICROPY_PORT_NETWORK_INTERFACES

// Constants

{ MP_ROM_QSTR(MP_QSTR_STA_IF), MP_ROM_INT(MOD_NETWORK_STA_IF) },

{ MP_ROM_QSTR(MP_QSTR_AP_IF), MP_ROM_INT(MOD_NETWORK_AP_IF) },

};

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 },

.globals = (mp_obj_dict_t *)&mp_module_network_globals,

};

MP_REGISTER_MODULE(MP_QSTR_network, mp_module_network);

/*******************************************************************************/

// Implementations of network methods that can be used by any interface

#if MICROPY_PY_LWIP

mp_obj_t mod_network_nic_ifconfig(struct netif *netif, size_t n_args, const mp_obj_t *args) {

if (n_args == 0) {

// Get IP addresses

const ip_addr_t *dns = dns_getserver(0);

mp_obj_t tuple[4] = {

netutils_format_ipv4_addr((uint8_t *)&netif->ip_addr, NETUTILS_BIG),

netutils_format_ipv4_addr((uint8_t *)&netif->netmask, NETUTILS_BIG),

netutils_format_ipv4_addr((uint8_t *)&netif->gw, NETUTILS_BIG),

netutils_format_ipv4_addr((uint8_t *)dns, NETUTILS_BIG),

};

return mp_obj_new_tuple(4, tuple);

} else if (args[0] == MP_OBJ_NEW_QSTR(MP_QSTR_dhcp)) {

// Start the DHCP client

if (dhcp_supplied_address(netif)) {

dhcp_renew(netif);

} else {

dhcp_stop(netif);

dhcp_start(netif);

}

// Wait for DHCP to get IP address

uint32_t start = mp_hal_ticks_ms();

while (!dhcp_supplied_address(netif)) {

if (mp_hal_ticks_ms() - start > 10000) {

mp_raise_msg(&mp_type_OSError, MP_ERROR_TEXT("timeout waiting for DHCP to get IP address"));

}

mp_hal_delay_ms(100);

}

return mp_const_none;

} else {

// Release and stop any existing DHCP

dhcp_release(netif);

dhcp_stop(netif);

// Set static IP addresses

mp_obj_t *items;

mp_obj_get_array_fixed_n(args[0], 4, &items);

netutils_parse_ipv4_addr(items[0], (uint8_t *)&netif->ip_addr, NETUTILS_BIG);

netutils_parse_ipv4_addr(items[1], (uint8_t *)&netif->netmask, NETUTILS_BIG);

netutils_parse_ipv4_addr(items[2], (uint8_t *)&netif->gw, NETUTILS_BIG);

ip_addr_t dns;

netutils_parse_ipv4_addr(items[3], (uint8_t *)&dns, NETUTILS_BIG);

dns_setserver(0, &dns);

return mp_const_none;

}

}

#endif

MP_REGISTER_ROOT_POINTER(mp_obj_list_t mod_network_nic_list);

#endif // MICROPY_PY_NETWORK