nodemcu-firmware/app/modules/wifi_eventmon.c

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// WiFi Event Monitor
#include "module.h"
#include "lauxlib.h"
#include "platform.h"
#include "c_string.h"
#include "c_stdlib.h"
#include "c_types.h"
#include "user_interface.h"
#include "smart.h"
#include "smartconfig.h"
#include "user_config.h"
#include "wifi_common.h"
#if defined(LUA_USE_MODULES_WIFI)
#ifdef WIFI_STATION_STATUS_MONITOR_ENABLE
//variables for wifi event monitor
static int wifi_station_status_cb_ref[6] = {[0 ... 6-1] = LUA_NOREF};
static os_timer_t wifi_sta_status_timer;
static uint8 prev_wifi_status=0;
// wifi.sta.eventMonStop()
void wifi_station_event_mon_stop(lua_State* L)
{
os_timer_disarm(&wifi_sta_status_timer);
if(lua_isstring(L,1))
{
int i;
for (i=0; i<6; i++)
{
unregister_lua_cb(L, &wifi_station_status_cb_ref[i]);
}
}
return;
}
static void wifi_status_cb(int arg)
{
lua_State* L = lua_getstate();
if (wifi_get_opmode() == SOFTAP_MODE)
{
os_timer_disarm(&wifi_sta_status_timer);
return;
}
int wifi_status = wifi_station_get_connect_status();
if (wifi_status != prev_wifi_status)
{
if(wifi_station_status_cb_ref[wifi_status] != LUA_NOREF)
{
lua_rawgeti(L, LUA_REGISTRYINDEX, wifi_station_status_cb_ref[wifi_status]);
lua_pushnumber(L, prev_wifi_status);
lua_call(L, 1, 0);
}
}
prev_wifi_status = wifi_status;
}
// wifi.sta.eventMonReg()
int wifi_station_event_mon_reg(lua_State* L)
{
uint8 id=(uint8)luaL_checknumber(L, 1);
if ((id > 5)) // verify user specified a valid wifi status
{
return luaL_error( L, "valid wifi status:0-5" );
}
if (lua_type(L, 2) == LUA_TFUNCTION || lua_type(L, 2) == LUA_TLIGHTFUNCTION) //check if 2nd item on stack is a function
{
lua_pushvalue(L, 2); //push function to top of stack
register_lua_cb(L, &wifi_station_status_cb_ref[id]);//pop function from top of the stack, register it in the LUA_REGISTRY, then assign returned lua_ref to wifi_station_status_cb_ref[id]
}
else
{
unregister_lua_cb(L, &wifi_station_status_cb_ref[id]); // unregister user's callback
}
return 0;
}
// wifi.sta.eventMonStart()
int wifi_station_event_mon_start(lua_State* L)
{
if(wifi_get_opmode() == SOFTAP_MODE) //Verify ESP is in either Station mode or StationAP mode
{
return luaL_error( L, "Can't monitor in SOFTAP mode" );
}
if (wifi_station_status_cb_ref[0] == LUA_NOREF && wifi_station_status_cb_ref[1] == LUA_NOREF &&
wifi_station_status_cb_ref[2] == LUA_NOREF && wifi_station_status_cb_ref[3] == LUA_NOREF &&
wifi_station_status_cb_ref[4] == LUA_NOREF && wifi_station_status_cb_ref[5] == LUA_NOREF )
{ //verify user has registered callbacks
return luaL_error( L, "No callbacks defined" );
}
uint32 ms = 150; //set default timer interval
if(lua_isnumber(L, 1)) // check if user has specified a different timer interval
{
ms=luaL_checknumber(L, 1); // retrieve user-defined interval
}
os_timer_disarm(&wifi_sta_status_timer);
os_timer_setfn(&wifi_sta_status_timer, (os_timer_func_t *)wifi_status_cb, NULL);
os_timer_arm(&wifi_sta_status_timer, ms, 1);
return 0;
}
#endif
#ifdef WIFI_SDK_EVENT_MONITOR_ENABLE
//variables for wifi event monitor
static task_handle_t wifi_event_monitor_task_id; //variable to hold task id for task handler(process_event_queue)
typedef struct evt_queue{
System_Event_t *evt;
struct evt_queue * next;
}evt_queue_t; //structure to hold pointers to event info and next item in queue
static evt_queue_t *wifi_event_queue_head; //pointer to beginning of queue
static evt_queue_t *wifi_event_queue_tail; //pointer to end of queue
static int wifi_event_cb_ref[EVENT_MAX+1] = { [0 ... EVENT_MAX] = LUA_NOREF}; //holds references to registered Lua callbacks
// wifi.eventmon.register()
static int wifi_event_monitor_register(lua_State* L)
{
uint8 id = (uint8)luaL_checknumber(L, 1);
if ( id > EVENT_MAX ) //Check if user is trying to register a callback for a valid event.
{
return luaL_error( L, "valid wifi events:0-%d", EVENT_MAX );
}
else
{
if (lua_type(L, 2) == LUA_TFUNCTION || lua_type(L, 2) == LUA_TLIGHTFUNCTION) //check if 2nd item on stack is a function
{
lua_pushvalue(L, 2); // copy argument (func) to the top of stack
register_lua_cb(L, &wifi_event_cb_ref[id]); //pop function from top of the stack, register it in the LUA_REGISTRY, then assign lua_ref to wifi_event_cb_ref[id]
}
else // unregister user's callback
{
unregister_lua_cb(L, &wifi_event_cb_ref[id]);
}
return 0;
}
}
static void wifi_event_monitor_handle_event_cb(System_Event_t *evt)
{
EVENT_DBG("\n\twifi_event_monitor_handle_event_cb is called\n");
if((wifi_event_cb_ref[evt->event] != LUA_NOREF) || ((wifi_event_cb_ref[EVENT_MAX] != LUA_NOREF) &&
!(evt->event == EVENT_STAMODE_CONNECTED || evt->event == EVENT_STAMODE_DISCONNECTED ||
evt->event == EVENT_STAMODE_AUTHMODE_CHANGE||evt->event==EVENT_STAMODE_GOT_IP ||
evt->event == EVENT_STAMODE_DHCP_TIMEOUT||evt->event==EVENT_SOFTAPMODE_STACONNECTED ||
evt->event == EVENT_SOFTAPMODE_STADISCONNECTED||evt->event==EVENT_SOFTAPMODE_PROBEREQRECVED)))
{
evt_queue_t *temp = (evt_queue_t*)c_malloc(sizeof(evt_queue_t)); //allocate memory for new queue item
temp->evt = (System_Event_t*)c_malloc(sizeof(System_Event_t)); //allocate memory to hold event structure
if(!temp || !temp->evt)
{
luaL_error(lua_getstate(), "wifi.eventmon malloc: out of memory");
return;
}
c_memcpy(temp->evt, evt, sizeof(System_Event_t)); //copy event data to new struct
if(wifi_event_queue_head == NULL && wifi_event_queue_tail == NULL)// if queue is empty add item to queue
{
wifi_event_queue_head = wifi_event_queue_tail = temp;
EVENT_DBG("\n\tqueue empty, adding event and posting task\n");
task_post_low(wifi_event_monitor_task_id, false);
}
else //if queue is not empty append item to end of queue
{
wifi_event_queue_tail->next=temp;
wifi_event_queue_tail=temp;
EVENT_DBG("\n\tqueue not empty, appending queue\n");
}
}
}
static void wifi_event_monitor_process_event_queue(task_param_t param, uint8 priority)
{
lua_State* L = lua_getstate();
evt_queue_t *temp = wifi_event_queue_head; //copy event_queue_head pointer to temporary pointer
System_Event_t *evt = temp->evt; //copy event data pointer to temporary pointer
EVENT_DBG("\t\tevent %u\n", evt->event);
if(wifi_event_cb_ref[evt->event] != LUA_NOREF) // check if user has registered a callback
{
lua_rawgeti(L, LUA_REGISTRYINDEX, wifi_event_cb_ref[evt->event]); //get user's callback
}
else if((wifi_event_cb_ref[EVENT_MAX]!=LUA_NOREF) &&
!(evt->event==EVENT_STAMODE_CONNECTED||evt->event==EVENT_STAMODE_DISCONNECTED||
evt->event==EVENT_STAMODE_AUTHMODE_CHANGE||evt->event==EVENT_STAMODE_GOT_IP||
evt->event==EVENT_STAMODE_DHCP_TIMEOUT||evt->event==EVENT_SOFTAPMODE_STACONNECTED||
evt->event==EVENT_SOFTAPMODE_STADISCONNECTED||evt->event==EVENT_SOFTAPMODE_PROBEREQRECVED))
{ //if user has registered an EVENT_MAX(default) callback and event is not implemented...
lua_rawgeti(L, LUA_REGISTRYINDEX, wifi_event_cb_ref[EVENT_MAX]); //get user's callback
}
lua_newtable( L );
switch (evt->event)
{
case EVENT_STAMODE_CONNECTED:
EVENT_DBG("\n\tSTAMODE_CONNECTED\n");
wifi_add_sprintf_field(L, "SSID", (char*)evt->event_info.connected.ssid);
wifi_add_sprintf_field(L, "BSSID", MACSTR, MAC2STR(evt->event_info.connected.bssid));
wifi_add_int_field(L, "channel", evt->event_info.connected.channel);
EVENT_DBG("\tConnected to SSID %s, Channel %d\n",
evt->event_info.connected.ssid,
evt->event_info.connected.channel);
break;
case EVENT_STAMODE_DISCONNECTED:
EVENT_DBG("\n\tSTAMODE_DISCONNECTED\n");
wifi_add_sprintf_field(L, "SSID", (char*)evt->event_info.disconnected.ssid);
wifi_add_int_field(L, "reason", evt->event_info.disconnected.reason);
wifi_add_sprintf_field(L, "BSSID", MACSTR, MAC2STR(evt->event_info.disconnected.bssid));
EVENT_DBG("\tDisconnect from SSID %s, reason %d\n",
evt->event_info.disconnected.ssid,
evt->event_info.disconnected.reason);
break;
case EVENT_STAMODE_AUTHMODE_CHANGE:
EVENT_DBG("\n\tSTAMODE_AUTHMODE_CHANGE\n");
wifi_add_int_field(L, "old_auth_mode", evt->event_info.auth_change.old_mode);
wifi_add_int_field(L, "new_auth_mode", evt->event_info.auth_change.new_mode);
EVENT_DBG("\tAuthmode: %u -> %u\n",
evt->event_info.auth_change.old_mode,
evt->event_info.auth_change.new_mode);
break;
case EVENT_STAMODE_GOT_IP:
EVENT_DBG("\n\tGOT_IP\n");
wifi_add_sprintf_field(L, "IP", IPSTR, IP2STR(&evt->event_info.got_ip.ip));
wifi_add_sprintf_field(L, "netmask", IPSTR, IP2STR(&evt->event_info.got_ip.mask));
wifi_add_sprintf_field(L, "gateway", IPSTR, IP2STR(&evt->event_info.got_ip.gw));
EVENT_DBG("\tIP:" IPSTR ",Mask:" IPSTR ",GW:" IPSTR "\n",
IP2STR(&evt->event_info.got_ip.ip),
IP2STR(&evt->event_info.got_ip.mask),
IP2STR(&evt->event_info.got_ip.gw));
break;
case EVENT_STAMODE_DHCP_TIMEOUT:
EVENT_DBG("\n\tSTAMODE_DHCP_TIMEOUT\n");
break;
case EVENT_SOFTAPMODE_STACONNECTED:
EVENT_DBG("\n\tSOFTAPMODE_STACONNECTED\n");
wifi_add_sprintf_field(L, "MAC", MACSTR, MAC2STR(evt->event_info.sta_connected.mac));
wifi_add_int_field(L, "AID", evt->event_info.sta_connected.aid);
EVENT_DBG("\tStation: " MACSTR "join, AID = %d\n",
MAC2STR(evt->event_info.sta_connected.mac),
evt->event_info.sta_connected.aid);
break;
case EVENT_SOFTAPMODE_STADISCONNECTED:
EVENT_DBG("\n\tSOFTAPMODE_STADISCONNECTED\n");
wifi_add_sprintf_field(L, "MAC", MACSTR, MAC2STR(evt->event_info.sta_disconnected.mac));
wifi_add_int_field(L, "AID", evt->event_info.sta_disconnected.aid);
EVENT_DBG("\tstation: " MACSTR "leave, AID = %d\n",
MAC2STR(evt->event_info.sta_disconnected.mac),
evt->event_info.sta_disconnected.aid);
break;
case EVENT_SOFTAPMODE_PROBEREQRECVED:
EVENT_DBG("\n\tSOFTAPMODE_PROBEREQRECVED\n");
wifi_add_sprintf_field(L, "MAC", MACSTR, MAC2STR(evt->event_info.ap_probereqrecved.mac));
wifi_add_int_field(L, "RSSI", evt->event_info.ap_probereqrecved.rssi);
EVENT_DBG("Station PROBEREQ: " MACSTR " RSSI = %d\n",
MAC2STR(evt->event_info.ap_probereqrecved.mac),
evt->event_info.ap_probereqrecved.rssi);
break;
default://if event is not implemented, push table with userdata containing event data
EVENT_DBG("\n\tswitch/case default\n");
wifi_add_sprintf_field(L, "info", "event %u not implemented", evt->event);
break;
}
lua_call(L, 1, 0); //execute user's callback and pass Lua table
if (wifi_event_queue_head == wifi_event_queue_tail) //if queue is empty..
{
wifi_event_queue_head = wifi_event_queue_tail = NULL; //set queue pointers to NULL
EVENT_DBG("\n\tQueue empty\n");
}
else //if queue is not empty...
{
wifi_event_queue_head = wifi_event_queue_head->next; //append item to end of queue
EVENT_DBG("\n\tmore in queue, posting task...\n");
task_post_low(wifi_event_monitor_task_id, false); //post task to process next item in queue
}
c_free(evt); //free memory used by event structure
c_free(temp); //free memory used by queue structure
}
#ifdef WIFI_EVENT_MONITOR_DISCONNECT_REASON_LIST_ENABLE
static const LUA_REG_TYPE wifi_event_monitor_reason_map[] =
{
{ LSTRKEY( "UNSPECIFIED" ), LNUMVAL( REASON_UNSPECIFIED ) },
{ LSTRKEY( "AUTH_EXPIRE" ), LNUMVAL( REASON_AUTH_EXPIRE ) },
{ LSTRKEY( "AUTH_LEAVE" ), LNUMVAL( REASON_AUTH_LEAVE ) },
{ LSTRKEY( "ASSOC_EXPIRE" ), LNUMVAL( REASON_ASSOC_EXPIRE ) },
{ LSTRKEY( "ASSOC_TOOMANY" ), LNUMVAL( REASON_ASSOC_TOOMANY ) },
{ LSTRKEY( "NOT_AUTHED" ), LNUMVAL( REASON_NOT_AUTHED ) },
{ LSTRKEY( "NOT_ASSOCED" ), LNUMVAL( REASON_NOT_ASSOCED ) },
{ LSTRKEY( "ASSOC_LEAVE" ), LNUMVAL( REASON_ASSOC_LEAVE ) },
{ LSTRKEY( "ASSOC_NOT_AUTHED" ), LNUMVAL( REASON_ASSOC_NOT_AUTHED ) },
{ LSTRKEY( "DISASSOC_PWRCAP_BAD" ), LNUMVAL( REASON_DISASSOC_PWRCAP_BAD ) },
{ LSTRKEY( "DISASSOC_SUPCHAN_BAD" ), LNUMVAL( REASON_DISASSOC_SUPCHAN_BAD ) },
{ LSTRKEY( "IE_INVALID" ), LNUMVAL( REASON_IE_INVALID ) },
{ LSTRKEY( "MIC_FAILURE" ), LNUMVAL( REASON_MIC_FAILURE ) },
{ LSTRKEY( "4WAY_HANDSHAKE_TIMEOUT" ), LNUMVAL( REASON_4WAY_HANDSHAKE_TIMEOUT ) },
{ LSTRKEY( "GROUP_KEY_UPDATE_TIMEOUT" ), LNUMVAL( REASON_GROUP_KEY_UPDATE_TIMEOUT ) },
{ LSTRKEY( "IE_IN_4WAY_DIFFERS" ), LNUMVAL( REASON_IE_IN_4WAY_DIFFERS ) },
{ LSTRKEY( "GROUP_CIPHER_INVALID" ), LNUMVAL( REASON_GROUP_CIPHER_INVALID ) },
{ LSTRKEY( "PAIRWISE_CIPHER_INVALID" ), LNUMVAL( REASON_PAIRWISE_CIPHER_INVALID ) },
{ LSTRKEY( "AKMP_INVALID" ), LNUMVAL( REASON_AKMP_INVALID ) },
{ LSTRKEY( "UNSUPP_RSN_IE_VERSION" ), LNUMVAL( REASON_UNSUPP_RSN_IE_VERSION ) },
{ LSTRKEY( "INVALID_RSN_IE_CAP" ), LNUMVAL( REASON_INVALID_RSN_IE_CAP ) },
{ LSTRKEY( "802_1X_AUTH_FAILED" ), LNUMVAL( REASON_802_1X_AUTH_FAILED ) },
{ LSTRKEY( "CIPHER_SUITE_REJECTED" ), LNUMVAL( REASON_CIPHER_SUITE_REJECTED ) },
{ LSTRKEY( "BEACON_TIMEOUT" ), LNUMVAL( REASON_BEACON_TIMEOUT ) },
{ LSTRKEY( "NO_AP_FOUND" ), LNUMVAL( REASON_NO_AP_FOUND ) },
{ LSTRKEY( "AUTH_FAIL" ), LNUMVAL( REASON_AUTH_FAIL ) },
{ LSTRKEY( "ASSOC_FAIL" ), LNUMVAL( REASON_ASSOC_FAIL ) },
{ LSTRKEY( "HANDSHAKE_TIMEOUT" ), LNUMVAL( REASON_HANDSHAKE_TIMEOUT ) },
{ LNILKEY, LNILVAL }
};
#endif
const LUA_REG_TYPE wifi_event_monitor_map[] =
{
{ LSTRKEY( "register" ), LFUNCVAL( wifi_event_monitor_register ) },
{ LSTRKEY( "unregister" ), LFUNCVAL( wifi_event_monitor_register ) },
{ LSTRKEY( "STA_CONNECTED" ), LNUMVAL( EVENT_STAMODE_CONNECTED ) },
{ LSTRKEY( "STA_DISCONNECTED" ), LNUMVAL( EVENT_STAMODE_DISCONNECTED ) },
{ LSTRKEY( "STA_AUTHMODE_CHANGE" ), LNUMVAL( EVENT_STAMODE_AUTHMODE_CHANGE ) },
{ LSTRKEY( "STA_GOT_IP" ), LNUMVAL( EVENT_STAMODE_GOT_IP ) },
{ LSTRKEY( "STA_DHCP_TIMEOUT" ), LNUMVAL( EVENT_STAMODE_DHCP_TIMEOUT ) },
{ LSTRKEY( "AP_STACONNECTED" ), LNUMVAL( EVENT_SOFTAPMODE_STACONNECTED ) },
{ LSTRKEY( "AP_STADISCONNECTED" ), LNUMVAL( EVENT_SOFTAPMODE_STADISCONNECTED ) },
{ LSTRKEY( "AP_PROBEREQRECVED" ), LNUMVAL( EVENT_SOFTAPMODE_PROBEREQRECVED ) },
{ LSTRKEY( "EVENT_MAX" ), LNUMVAL( EVENT_MAX ) },
#ifdef WIFI_EVENT_MONITOR_DISCONNECT_REASON_LIST_ENABLE
{ LSTRKEY( "reason" ), LROVAL( wifi_event_monitor_reason_map ) },
#endif
{ LNILKEY, LNILVAL }
};
void wifi_eventmon_init()
{
wifi_event_monitor_task_id = task_get_id(wifi_event_monitor_process_event_queue);//get task id from task interface
wifi_set_event_handler_cb(wifi_event_monitor_handle_event_cb);
return;
}
#endif
#endif