458 lines
14 KiB
C
458 lines
14 KiB
C
/*
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* Copyright 2016-2021 Dius Computing Pty Ltd. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the
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* distribution.
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* - Neither the name of the copyright holders nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @author Johny Mattsson <jmattsson@dius.com.au>
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*/
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#include "module.h"
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#include "lauxlib.h"
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#include "lextra.h"
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#include "lmem.h"
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#include "nodemcu_esp_event.h"
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#include "wifi_common.h"
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#include "ip_fmt.h"
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#include "nodemcu_esp_event.h"
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#include <string.h>
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#include "esp_netif.h"
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static esp_netif_t *wifi_sta = NULL;
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static int scan_cb_ref = LUA_NOREF;
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// --- Event handling -----------------------------------------------------
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static void sta_conn (lua_State *L, const void *data);
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static void sta_disconn (lua_State *L, const void *data);
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static void sta_authmode (lua_State *L, const void *data);
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static void sta_got_ip (lua_State *L, const void *data);
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static void empty_arg (lua_State *L, const void *data) {}
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static const event_desc_t events[] =
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{
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{ "start", &WIFI_EVENT, WIFI_EVENT_STA_START, empty_arg},
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{ "stop", &WIFI_EVENT, WIFI_EVENT_STA_STOP, empty_arg},
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{ "connected", &WIFI_EVENT, WIFI_EVENT_STA_CONNECTED, sta_conn },
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{ "disconnected", &WIFI_EVENT, WIFI_EVENT_STA_DISCONNECTED, sta_disconn },
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{ "authmode_changed", &WIFI_EVENT, WIFI_EVENT_STA_AUTHMODE_CHANGE, sta_authmode },
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{ "got_ip", &IP_EVENT, IP_EVENT_STA_GOT_IP, sta_got_ip},
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};
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#define ARRAY_LEN(a) (sizeof(a) / sizeof(a[0]))
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static int event_cb[ARRAY_LEN(events)];
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static void sta_conn (lua_State *L, const void *data)
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{
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const wifi_event_sta_connected_t *connected =
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(const wifi_event_sta_connected_t *)data;
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lua_pushlstring (L, (const char *)connected->ssid, connected->ssid_len);
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lua_setfield (L, -2, "ssid");
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char bssid_str[MAC_STR_SZ];
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macstr (bssid_str, connected->bssid);
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lua_pushstring (L, bssid_str);
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lua_setfield (L, -2, "bssid");
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lua_pushinteger (L, connected->channel);
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lua_setfield (L, -2, "channel");
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lua_pushinteger (L, connected->authmode);
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lua_setfield (L, -2, "auth");
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}
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static void sta_disconn (lua_State *L, const void *data)
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{
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const wifi_event_sta_disconnected_t *disconnected =
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(const wifi_event_sta_disconnected_t *)data;
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lua_pushlstring (L, (const char *)disconnected->ssid, disconnected->ssid_len);
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lua_setfield (L, -2, "ssid");
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char bssid_str[MAC_STR_SZ];
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macstr(bssid_str, disconnected->bssid);
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lua_pushstring (L, bssid_str);
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lua_setfield (L, -2, "bssid");
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lua_pushinteger (L, disconnected->reason);
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lua_setfield (L, -2, "reason");
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}
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static void sta_authmode (lua_State *L, const void *data)
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{
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const wifi_event_sta_authmode_change_t *auth_change =
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(const wifi_event_sta_authmode_change_t *)data;
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lua_pushinteger (L, auth_change->old_mode);
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lua_setfield (L, -2, "old_mode");
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lua_pushinteger (L, auth_change->new_mode);
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lua_setfield (L, -2, "new_mode");
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}
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static void sta_got_ip (lua_State *L, const void *data)
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{
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const ip_event_got_ip_t *got_ip_info =
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(const ip_event_got_ip_t *)data;
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const esp_netif_ip_info_t *ip_info = &got_ip_info->ip_info;
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char ipstr[IP_STR_SZ] = { 0 };
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ip4str_esp (ipstr, &ip_info->ip);
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lua_pushstring (L, ipstr);
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lua_setfield (L, -2, "ip");
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ip4str_esp (ipstr, &ip_info->netmask);
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lua_pushstring (L, ipstr);
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lua_setfield (L, -2, "netmask");
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ip4str_esp (ipstr, &ip_info->gw);
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lua_pushstring (L, ipstr);
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lua_setfield (L, -2, "gw");
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}
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static void on_event (esp_event_base_t base, int32_t id, const void *data)
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{
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int idx = wifi_event_idx_by_id (events, ARRAY_LEN(events), base, id);
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if (idx < 0 || event_cb[idx] == LUA_NOREF)
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return;
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lua_State *L = lua_getstate ();
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lua_rawgeti (L, LUA_REGISTRYINDEX, event_cb[idx]);
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lua_pushstring (L, events[idx].name);
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lua_createtable (L, 0, 5);
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events[idx].fill_cb_arg (L, data);
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lua_call (L, 2, 0);
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}
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NODEMCU_ESP_EVENT(WIFI_EVENT, WIFI_EVENT_STA_START, on_event);
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NODEMCU_ESP_EVENT(WIFI_EVENT, WIFI_EVENT_STA_STOP, on_event);
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NODEMCU_ESP_EVENT(WIFI_EVENT, WIFI_EVENT_STA_CONNECTED, on_event);
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NODEMCU_ESP_EVENT(WIFI_EVENT, WIFI_EVENT_STA_DISCONNECTED, on_event);
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NODEMCU_ESP_EVENT(WIFI_EVENT, WIFI_EVENT_STA_AUTHMODE_CHANGE, on_event);
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NODEMCU_ESP_EVENT(IP_EVENT, IP_EVENT_STA_GOT_IP, on_event);
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// TODO: support WPS events?
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void wifi_sta_init (void)
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{
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wifi_sta = esp_netif_create_default_wifi_sta();
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for (unsigned i = 0; i < ARRAY_LEN(event_cb); ++i)
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event_cb[i] = LUA_NOREF;
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}
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// --- Lua API functions ----------------------------------------------------
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static int wifi_sta_setip(lua_State *L)
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{
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luaL_checktable (L, 1);
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size_t len = 0;
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const char *str = NULL;
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esp_netif_ip_info_t ip_info = { 0, };
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lua_getfield (L, 1, "ip");
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str = luaL_checklstring (L, -1, &len);
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if (esp_netif_str_to_ip4(str, &ip_info.ip) != ESP_OK)
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{
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return luaL_error(L, "Could not parse IP address, aborting");
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}
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lua_getfield (L, 1, "netmask");
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str = luaL_checklstring (L, -1, &len);
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if (esp_netif_str_to_ip4(str, &ip_info.netmask) != ESP_OK)
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{
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return luaL_error(L, "Could not parse Netmask, aborting");
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}
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lua_getfield (L, 1, "gateway");
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str = luaL_checklstring (L, -1, &len);
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if (esp_netif_str_to_ip4(str, &ip_info.gw) != ESP_OK)
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{
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return luaL_error(L, "Could not parse Gateway address, aborting");
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}
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esp_netif_dns_info_t dns_info = { .ip = { .type = ESP_IPADDR_TYPE_V4 } };
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lua_getfield (L, 1, "dns");
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str = luaL_optlstring(L, -1, str, &len); // default to gateway
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if (esp_netif_str_to_ip4(str, &dns_info.ip.u_addr.ip4) != ESP_OK)
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{
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return luaL_error(L, "Could not parse DNS address, aborting");
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}
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ESP_ERROR_CHECK(esp_netif_dhcpc_stop(wifi_sta));
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esp_netif_set_ip_info(wifi_sta, &ip_info);
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esp_netif_set_dns_info(wifi_sta, ESP_NETIF_DNS_MAIN, &dns_info);
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return 0;
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}
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static int wifi_sta_sethostname(lua_State *L)
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{
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size_t l;
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const char *hostname = luaL_checklstring(L, 1, &l);
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esp_err_t err = esp_netif_set_hostname(wifi_sta, hostname);
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if (err != ESP_OK)
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return luaL_error (L, "failed to set hostname, code %d", err);
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lua_pushboolean (L, err==ESP_OK);
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return 1;
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}
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static int wifi_sta_config (lua_State *L)
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{
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luaL_checktable (L, 1);
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bool save = luaL_optbool (L, 2, DEFAULT_SAVE);
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lua_settop (L, 1);
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wifi_config_t cfg;
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memset (&cfg, 0, sizeof (cfg));
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lua_getfield (L, 1, "ssid");
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size_t len;
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const char *str = luaL_checklstring (L, -1, &len);
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if (len > sizeof (cfg.sta.ssid))
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len = sizeof (cfg.sta.ssid);
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strncpy ((char *)cfg.sta.ssid, str, len);
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lua_getfield (L, 1, "pwd");
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str = luaL_optlstring (L, -1, "", &len);
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if (len > sizeof (cfg.sta.password))
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len = sizeof (cfg.sta.password);
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strncpy ((char *)cfg.sta.password, str, len);
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lua_getfield (L, 1, "bssid");
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cfg.sta.bssid_set = false;
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if (lua_isstring (L, -1))
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{
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const char *bssid = luaL_checklstring (L, -1, &len);
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const char *fmts[] = {
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"%hhx%hhx%hhx%hhx%hhx%hhx",
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"%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
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"%hhx-%hhx-%hhx-%hhx-%hhx-%hhx",
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"%hhx %hhx %hhx %hhx %hhx %hhx",
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NULL
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};
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for (unsigned i = 0; fmts[i]; ++i)
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{
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if (sscanf (bssid, fmts[i],
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&cfg.sta.bssid[0], &cfg.sta.bssid[1], &cfg.sta.bssid[2],
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&cfg.sta.bssid[3], &cfg.sta.bssid[4], &cfg.sta.bssid[5]) == 6)
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{
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cfg.sta.bssid_set = true;
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break;
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}
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}
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if (!cfg.sta.bssid_set)
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return luaL_error (L, "invalid BSSID: %s", bssid);
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}
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lua_getfield(L, 1, "pmf");
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if (lua_isnumber(L, -1))
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{
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int pmf_mode = lua_tointeger(L, -1);
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if (pmf_mode)
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cfg.sta.pmf_cfg.capable = true;
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if (pmf_mode == 2)
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cfg.sta.pmf_cfg.required = true;
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}
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else
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cfg.sta.pmf_cfg.capable = true;
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SET_SAVE_MODE(save);
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esp_err_t err = esp_wifi_set_config (WIFI_IF_STA, &cfg);
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if (err != ESP_OK)
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return luaL_error (L, "failed to set wifi config, code %d", err);
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return 0;
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}
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static int wifi_sta_connect (lua_State *L)
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{
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esp_err_t err = esp_wifi_connect ();
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return (err == ESP_OK) ? 0 : luaL_error (L, "connect failed, code %d", err);
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}
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static int wifi_sta_disconnect (lua_State *L)
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{
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esp_err_t err = esp_wifi_disconnect ();
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return (err == ESP_OK) ? 0 : luaL_error(L, "disconnect failed, code %d", err);
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}
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static int wifi_sta_getconfig (lua_State *L)
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{
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wifi_config_t cfg;
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esp_err_t err = esp_wifi_get_config (WIFI_IF_STA, &cfg);
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if (err != ESP_OK)
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return luaL_error (L, "failed to get config, code %d", err);
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lua_createtable (L, 0, 3);
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size_t ssid_len = strnlen ((char *)cfg.sta.ssid, sizeof (cfg.sta.ssid));
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lua_pushlstring (L, (char *)cfg.sta.ssid, ssid_len);
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lua_setfield (L, -2, "ssid");
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size_t pwd_len = strnlen ((char *)cfg.sta.password, sizeof (cfg.sta.password));
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lua_pushlstring (L, (char *)cfg.sta.password, pwd_len);
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lua_setfield (L, -2, "pwd");
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if (cfg.sta.bssid_set)
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{
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char bssid_str[MAC_STR_SZ];
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macstr (bssid_str, cfg.sta.bssid);
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lua_pushstring (L, bssid_str);
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lua_setfield (L, -2, "bssid");
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}
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return 1;
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}
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static int wifi_sta_getmac (lua_State *L)
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{
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return wifi_getmac(WIFI_IF_STA, L);
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}
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static void on_scan_done(esp_event_base_t base, int32_t id, const void *data)
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{
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(void)data;
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lua_State *L = lua_getstate ();
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lua_rawgeti (L, LUA_REGISTRYINDEX, scan_cb_ref);
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luaL_unref (L, LUA_REGISTRYINDEX, scan_cb_ref);
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scan_cb_ref = LUA_NOREF;
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int nargs = 1;
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if (!lua_isnoneornil (L, -1))
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{
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uint16_t num_ap = 0;
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esp_err_t err = esp_wifi_scan_get_ap_num (&num_ap);
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wifi_ap_record_t *aps = luaM_malloc (L, num_ap * sizeof (wifi_ap_record_t));
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if ((err == ESP_OK) && (aps) &&
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(err = esp_wifi_scan_get_ap_records (&num_ap, aps)) == ESP_OK)
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{
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lua_pushnil (L); // no error
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lua_createtable (L, num_ap, 0); // prepare array
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++nargs;
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for (unsigned i = 0; i < num_ap; ++i)
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{
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lua_createtable (L, 0, 6); // prepare table for AP entry
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char bssid_str[MAC_STR_SZ];
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macstr (bssid_str, aps[i].bssid);
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lua_pushstring (L, bssid_str);
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lua_setfield (L, -2, "bssid");
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size_t ssid_len =
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strnlen ((const char *)aps[i].ssid, sizeof (aps[i].ssid));
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lua_pushlstring (L, (const char *)aps[i].ssid, ssid_len);
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lua_setfield (L, -2, "ssid");
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lua_pushinteger (L, aps[i].primary);
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lua_setfield (L, -2, "channel");
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lua_pushinteger (L, aps[i].rssi);
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lua_setfield (L, -2, "rssi");
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lua_pushinteger (L, aps[i].authmode);
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lua_setfield (L, -2, "auth");
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lua_pushstring (L, wifi_second_chan_names[aps[i].second]);
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lua_setfield (L, -2, "bandwidth");
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lua_rawseti (L, -2, i + 1); // add table to array
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}
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}
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else
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lua_pushfstring (L, "failure on scan done");
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luaM_free (L, aps);
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lua_call (L, nargs, 0);
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}
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}
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static int wifi_sta_on (lua_State *L)
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{
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return wifi_on (L, events, ARRAY_LEN(events), event_cb);
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}
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static int wifi_sta_scan (lua_State *L)
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{
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if (scan_cb_ref != LUA_NOREF)
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return luaL_error (L, "scan already in progress");
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luaL_checktable (L, 1);
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luaL_checkfunction (L, 2);
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lua_settop (L, 2);
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scan_cb_ref = luaL_ref (L, LUA_REGISTRYINDEX);
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wifi_scan_config_t scan_cfg;
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memset (&scan_cfg, 0, sizeof (scan_cfg));
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lua_getfield (L, 1, "ssid");
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scan_cfg.ssid = (uint8_t *)luaL_optstring (L, -1, NULL);
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lua_getfield (L, 1, "bssid");
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scan_cfg.bssid = (uint8_t *)luaL_optstring (L, -1, NULL);
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lua_getfield (L, 1, "channel");
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scan_cfg.channel = luaL_optint (L, -1, 0);
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lua_getfield (L, 1, "hidden");
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scan_cfg.show_hidden = luaL_optint (L, -1, 0);
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esp_err_t err = esp_wifi_scan_start (&scan_cfg, false);
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if (err != ESP_OK)
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{
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luaL_unref (L, LUA_REGISTRYINDEX, scan_cb_ref);
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scan_cb_ref = LUA_NOREF;
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return luaL_error (L, "failed to start scan, code %d", err);
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}
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else
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return 0;
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}
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LROT_BEGIN(wifi_sta, NULL, 0)
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LROT_FUNCENTRY( setip, wifi_sta_setip )
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LROT_FUNCENTRY( sethostname, wifi_sta_sethostname )
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LROT_FUNCENTRY( config, wifi_sta_config )
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LROT_FUNCENTRY( connect, wifi_sta_connect )
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LROT_FUNCENTRY( disconnect, wifi_sta_disconnect )
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LROT_FUNCENTRY( getconfig, wifi_sta_getconfig )
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LROT_FUNCENTRY( getmac, wifi_sta_getmac )
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LROT_FUNCENTRY( on, wifi_sta_on )
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LROT_FUNCENTRY( scan, wifi_sta_scan )
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LROT_NUMENTRY( PMF_OFF, 0 )
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LROT_NUMENTRY( PMF_AVAILABLE, 1 )
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LROT_NUMENTRY( PMF_REQUIRED, 2 )
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LROT_END(wifi_sta, NULL, 0)
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NODEMCU_ESP_EVENT(WIFI_EVENT, WIFI_EVENT_SCAN_DONE, on_scan_done);
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