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mhsw-espurna/code/espurna/wifi.ino

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/*
WIFI MODULE
Copyright (C) 2016-2018 by Xose Pérez <xose dot perez at gmail dot com>
*/
#include "JustWifi.h"
#include <Ticker.h>
uint32_t _wifi_scan_client_id = 0;
bool _wifi_wps_running = false;
uint8_t _wifi_ap_mode = WIFI_AP_FALLBACK;
// -----------------------------------------------------------------------------
// PRIVATE
// -----------------------------------------------------------------------------
void _wifiCheckAP() {
static unsigned long last = 0;
if (millis() - last < 60000) return;
last = millis();
if ((WIFI_AP_FALLBACK == _wifi_ap_mode) &&
jw.connected() &&
jw.connectable() &&
(WiFi.softAPgetStationNum() == 0)
) {
jw.destroyAP();
}
}
void _wifiConfigure() {
jw.setHostname(getSetting("hostname").c_str());
#if USE_PASSWORD
jw.setSoftAP(getSetting("hostname").c_str(), getSetting("adminPass", ADMIN_PASS).c_str());
#else
jw.setSoftAP(getSetting("hostname").c_str());
#endif
jw.setConnectTimeout(WIFI_CONNECT_TIMEOUT);
wifiReconnectCheck();
jw.enableAPFallback(true);
jw.cleanNetworks();
_wifi_ap_mode = getSetting("apmode", WIFI_AP_FALLBACK).toInt();
// If system is flagged unstable we do not init wifi networks
#if SYSTEM_CHECK_ENABLED
if (!systemCheck()) return;
#endif
// Clean settings
_wifiClean(WIFI_MAX_NETWORKS);
int i;
for (i = 0; i< WIFI_MAX_NETWORKS; i++) {
if (getSetting("ssid" + String(i)).length() == 0) break;
if (getSetting("ip" + String(i)).length() == 0) {
jw.addNetwork(
getSetting("ssid" + String(i)).c_str(),
getSetting("pass" + String(i)).c_str()
);
} else {
jw.addNetwork(
getSetting("ssid" + String(i)).c_str(),
getSetting("pass" + String(i)).c_str(),
getSetting("ip" + String(i)).c_str(),
getSetting("gw" + String(i)).c_str(),
getSetting("mask" + String(i)).c_str(),
getSetting("dns" + String(i)).c_str()
);
}
}
jw.scanNetworks(getSetting("wifiScan", WIFI_SCAN_NETWORKS).toInt() == 1);
}
void _wifiScan(uint32_t client_id = 0) {
DEBUG_MSG_P(PSTR("[WIFI] Start scanning\n"));
#if WEB_SUPPORT
String output;
#endif
unsigned char result = WiFi.scanNetworks();
if (result == WIFI_SCAN_FAILED) {
DEBUG_MSG_P(PSTR("[WIFI] Scan failed\n"));
#if WEB_SUPPORT
output = String("Failed scan");
#endif
} else if (result == 0) {
DEBUG_MSG_P(PSTR("[WIFI] No networks found\n"));
#if WEB_SUPPORT
output = String("No networks found");
#endif
} else {
DEBUG_MSG_P(PSTR("[WIFI] %d networks found:\n"), result);
// Populate defined networks with scan data
for (int8_t i = 0; i < result; ++i) {
String ssid_scan;
int32_t rssi_scan;
uint8_t sec_scan;
uint8_t* BSSID_scan;
int32_t chan_scan;
bool hidden_scan;
char buffer[128];
WiFi.getNetworkInfo(i, ssid_scan, sec_scan, rssi_scan, BSSID_scan, chan_scan, hidden_scan);
snprintf_P(buffer, sizeof(buffer),
PSTR("BSSID: %02X:%02X:%02X:%02X:%02X:%02X SEC: %s RSSI: %3d CH: %2d SSID: %s"),
BSSID_scan[1], BSSID_scan[2], BSSID_scan[3], BSSID_scan[4], BSSID_scan[5], BSSID_scan[6],
(sec_scan != ENC_TYPE_NONE ? "YES" : "NO "),
rssi_scan,
chan_scan,
(char *) ssid_scan.c_str()
);
DEBUG_MSG_P(PSTR("[WIFI] > %s\n"), buffer);
#if WEB_SUPPORT
if (client_id > 0) output = output + String(buffer) + String("<br />");
#endif
}
}
#if WEB_SUPPORT
if (client_id > 0) {
output = String("{\"scanResult\": \"") + output + String("\"}");
wsSend(client_id, output.c_str());
}
#endif
WiFi.scanDelete();
}
bool _wifiClean(unsigned char num) {
bool changed = false;
int i = 0;
// Clean defined settings
while (i < num) {
// Skip on first non-defined setting
if (!hasSetting("ssid", i)) {
delSetting("ssid", i);
break;
}
// Delete empty values
if (!hasSetting("pass", i)) delSetting("pass", i);
if (!hasSetting("ip", i)) delSetting("ip", i);
if (!hasSetting("gw", i)) delSetting("gw", i);
if (!hasSetting("mask", i)) delSetting("mask", i);
if (!hasSetting("dns", i)) delSetting("dns", i);
++i;
}
// Delete all other settings
while (i < WIFI_MAX_NETWORKS) {
changed = hasSetting("ssid", i);
delSetting("ssid", i);
delSetting("pass", i);
delSetting("ip", i);
delSetting("gw", i);
delSetting("mask", i);
delSetting("dns", i);
++i;
}
return changed;
}
// Inject hardcoded networks
void _wifiInject() {
if (strlen(WIFI1_SSID)) {
if (!hasSetting("ssid", 0)) {
setSetting("ssid", 0, WIFI1_SSID);
setSetting("pass", 0, WIFI1_PASS);
setSetting("ip", 0, WIFI1_IP);
setSetting("gw", 0, WIFI1_GW);
setSetting("mask", 0, WIFI1_MASK);
setSetting("dns", 0, WIFI1_DNS);
}
if (strlen(WIFI2_SSID)) {
if (!hasSetting("ssid", 1)) {
setSetting("ssid", 1, WIFI2_SSID);
setSetting("pass", 1, WIFI2_PASS);
setSetting("ip", 1, WIFI2_IP);
setSetting("gw", 1, WIFI2_GW);
setSetting("mask", 1, WIFI2_MASK);
setSetting("dns", 1, WIFI2_DNS);
}
}
}
}
void _wifiCallback(justwifi_messages_t code, char * parameter) {
if (MESSAGE_WPS_START == code) {
_wifi_wps_running = true;
}
if (MESSAGE_WPS_ERROR == code) {
_wifi_wps_running = false;
}
if (MESSAGE_WPS_SUCCESS == code) {
String ssid = WiFi.SSID();
String pass = WiFi.psk();
// Look for the same SSID
uint8_t count = 0;
while (count < WIFI_MAX_NETWORKS) {
if (!hasSetting("ssid", count)) break;
if (ssid.equals(getSetting("ssid", count, ""))) break;
count++;
}
// If we have reached the max we overwrite the first one
if (WIFI_MAX_NETWORKS == count) count = 0;
setSetting("ssid", count, ssid);
setSetting("pass", count, pass);
_wifi_wps_running = false;
}
}
#if WIFI_AP_CAPTIVE
#include "DNSServer.h"
DNSServer _wifi_dnsServer;
void _wifiCaptivePortal(justwifi_messages_t code, char * parameter) {
if (MESSAGE_ACCESSPOINT_CREATED == code) {
_wifi_dnsServer.setErrorReplyCode(DNSReplyCode::NoError);
_wifi_dnsServer.start(53, "*", WiFi.softAPIP());
DEBUG_MSG_P(PSTR("[WIFI] Captive portal enabled\n"));
}
if (MESSAGE_CONNECTED == code) {
_wifi_dnsServer.stop();
DEBUG_MSG_P(PSTR("[WIFI] Captive portal disabled\n"));
}
}
#endif // WIFI_AP_CAPTIVE
#if DEBUG_SUPPORT
void _wifiDebug(justwifi_messages_t code, char * parameter) {
// -------------------------------------------------------------------------
if (code == MESSAGE_SCANNING) {
DEBUG_MSG_P(PSTR("[WIFI] Scanning\n"));
}
if (code == MESSAGE_SCAN_FAILED) {
DEBUG_MSG_P(PSTR("[WIFI] Scan failed\n"));
}
if (code == MESSAGE_NO_NETWORKS) {
DEBUG_MSG_P(PSTR("[WIFI] No networks found\n"));
}
if (code == MESSAGE_NO_KNOWN_NETWORKS) {
DEBUG_MSG_P(PSTR("[WIFI] No known networks found\n"));
}
if (code == MESSAGE_FOUND_NETWORK) {
DEBUG_MSG_P(PSTR("[WIFI] %s\n"), parameter);
}
// -------------------------------------------------------------------------
if (code == MESSAGE_CONNECTING) {
DEBUG_MSG_P(PSTR("[WIFI] Connecting to %s\n"), parameter);
}
if (code == MESSAGE_CONNECT_WAITING) {
// too much noise
}
if (code == MESSAGE_CONNECT_FAILED) {
DEBUG_MSG_P(PSTR("[WIFI] Could not connect to %s\n"), parameter);
}
if (code == MESSAGE_CONNECTED) {
wifiDebug();
}
if (code == MESSAGE_DISCONNECTED) {
DEBUG_MSG_P(PSTR("[WIFI] Disconnected\n"));
wifiDebug();
}
// -------------------------------------------------------------------------
if (code == MESSAGE_ACCESSPOINT_CREATING) {
DEBUG_MSG_P(PSTR("[WIFI] Creating access point\n"));
}
if (code == MESSAGE_ACCESSPOINT_CREATED) {
wifiDebug();
}
if (code == MESSAGE_ACCESSPOINT_FAILED) {
DEBUG_MSG_P(PSTR("[WIFI] Could not create access point\n"));
}
if (code == MESSAGE_ACCESSPOINT_DESTROYED) {
DEBUG_MSG_P(PSTR("[WIFI] Access point destroyed\n"));
wifiDebug();
}
// -------------------------------------------------------------------------
if (code == MESSAGE_WPS_START) {
DEBUG_MSG_P(PSTR("[WIFI] WPS started\n"));
}
if (code == MESSAGE_WPS_SUCCESS) {
DEBUG_MSG_P(PSTR("[WIFI] WPS succeded!\n"));
}
if (code == MESSAGE_WPS_ERROR) {
DEBUG_MSG_P(PSTR("[WIFI] WPS failed\n"));
}
}
#endif // DEBUG_SUPPORT
// -----------------------------------------------------------------------------
// SETTINGS
// -----------------------------------------------------------------------------
#if TERMINAL_SUPPORT
void _wifiInitCommands() {
settingsRegisterCommand(F("WIFI.RESET"), [](Embedis* e) {
_wifiConfigure();
wifiDisconnect();
DEBUG_MSG_P(PSTR("+OK\n"));
});
settingsRegisterCommand(F("WIFI.AP"), [](Embedis* e) {
wifiStartAP();
DEBUG_MSG_P(PSTR("+OK\n"));
});
settingsRegisterCommand(F("WIFI.WPS"), [](Embedis* e) {
wifiStartWPS();
DEBUG_MSG_P(PSTR("+OK\n"));
});
settingsRegisterCommand(F("WIFI.SCAN"), [](Embedis* e) {
_wifiScan();
DEBUG_MSG_P(PSTR("+OK\n"));
});
}
#endif
// -----------------------------------------------------------------------------
// WEB
// -----------------------------------------------------------------------------
#if WEB_SUPPORT
bool _wifiWebSocketOnReceive(const char * key, JsonVariant& value) {
if (strncmp(key, "wifi", 4) == 0) return true;
if (strncmp(key, "ssid", 4) == 0) return true;
if (strncmp(key, "pass", 4) == 0) return true;
if (strncmp(key, "ip", 2) == 0) return true;
if (strncmp(key, "gw", 2) == 0) return true;
if (strncmp(key, "mask", 4) == 0) return true;
if (strncmp(key, "dns", 3) == 0) return true;
return false;
}
void _wifiWebSocketOnSend(JsonObject& root) {
root["maxNetworks"] = WIFI_MAX_NETWORKS;
root["wifiScan"] = getSetting("wifiScan", WIFI_SCAN_NETWORKS).toInt() == 1;
JsonArray& wifi = root.createNestedArray("wifi");
for (byte i=0; i<WIFI_MAX_NETWORKS; i++) {
if (!hasSetting("ssid", i)) break;
JsonObject& network = wifi.createNestedObject();
network["ssid"] = getSetting("ssid", i, "");
network["pass"] = getSetting("pass", i, "");
network["ip"] = getSetting("ip", i, "");
network["gw"] = getSetting("gw", i, "");
network["mask"] = getSetting("mask", i, "");
network["dns"] = getSetting("dns", i, "");
}
}
void _wifiWebSocketOnAction(uint32_t client_id, const char * action, JsonObject& data) {
if (strcmp(action, "scan") == 0) _wifi_scan_client_id = client_id;
}
#endif
// -----------------------------------------------------------------------------
// API
// -----------------------------------------------------------------------------
String getIP() {
if (WiFi.getMode() == WIFI_AP) {
return WiFi.softAPIP().toString();
}
return WiFi.localIP().toString();
}
String getNetwork() {
if (WiFi.getMode() == WIFI_AP) {
return jw.getAPSSID();
}
return WiFi.SSID();
}
bool wifiConnected() {
return jw.connected();
}
void wifiDisconnect() {
jw.disconnect();
}
bool wifiStartAP() {
jw.disconnect();
jw.resetReconnectTimeout();
return jw.createAP();
}
void wifiStartWPS() {
jw.startWPS();
}
void wifiReconnectCheck() {
bool connected = false;
#if WEB_SUPPORT
if (wsConnected()) connected = true;
#endif
#if TELNET_SUPPORT
if (telnetConnected()) connected = true;
#endif
jw.setReconnectTimeout(connected ? 0 : WIFI_RECONNECT_INTERVAL);
}
uint8_t wifiState() {
uint8_t state = 0;
if (jw.connected()) state += WIFI_STATE_STA;
if (jw.connectable()) state += WIFI_STATE_AP;
if (_wifi_wps_running) state += WIFI_STATE_WPS;
return state;
}
void wifiDebug() {
if (WiFi.getMode() & WIFI_STA) {
uint8_t * bssid = WiFi.BSSID();
DEBUG_MSG_P(PSTR("[WIFI] ------------------------------------- MODE STA\n"));
DEBUG_MSG_P(PSTR("[WIFI] SSID %s\n"), WiFi.SSID().c_str());
DEBUG_MSG_P(PSTR("[WIFI] IP %s\n"), WiFi.localIP().toString().c_str());
DEBUG_MSG_P(PSTR("[WIFI] MAC %s\n"), WiFi.macAddress().c_str());
DEBUG_MSG_P(PSTR("[WIFI] GW %s\n"), WiFi.gatewayIP().toString().c_str());
DEBUG_MSG_P(PSTR("[WIFI] DNS %s\n"), WiFi.dnsIP().toString().c_str());
DEBUG_MSG_P(PSTR("[WIFI] MASK %s\n"), WiFi.subnetMask().toString().c_str());
DEBUG_MSG_P(PSTR("[WIFI] HOST %s\n"), WiFi.hostname().c_str());
DEBUG_MSG_P(PSTR("[WIFI] BSSID %02X:%02X:%02X:%02X:%02X:%02X\n"),
bssid[0], bssid[1], bssid[2], bssid[3], bssid[4], bssid[5], bssid[6]
);
DEBUG_MSG_P(PSTR("[WIFI] CH %d\n"), WiFi.channel());
DEBUG_MSG_P(PSTR("[WIFI] RSSI %d\n"), WiFi.RSSI());
}
if (WiFi.getMode() & WIFI_AP) {
DEBUG_MSG_P(PSTR("[WIFI] -------------------------------------- MODE AP\n"));
DEBUG_MSG_P(PSTR("[WIFI] SSID %s\n"), jw.getAPSSID().c_str());
DEBUG_MSG_P(PSTR("[WIFI] PASS %s\n"), getSetting("adminPass", ADMIN_PASS).c_str());
DEBUG_MSG_P(PSTR("[WIFI] IP %s\n"), WiFi.softAPIP().toString().c_str());
DEBUG_MSG_P(PSTR("[WIFI] MAC %s\n"), WiFi.softAPmacAddress().c_str());
}
if (WiFi.getMode() == 0) {
DEBUG_MSG_P(PSTR("[WIFI] ------------------------------------- MODE OFF\n"));
DEBUG_MSG_P(PSTR("[WIFI] No connection\n"));
}
DEBUG_MSG_P(PSTR("[WIFI] ----------------------------------------------\n"));
}
void wifiRegister(wifi_callback_f callback) {
jw.subscribe(callback);
}
// -----------------------------------------------------------------------------
// INITIALIZATION
// -----------------------------------------------------------------------------
void wifiSetup() {
WiFi.setSleepMode(WIFI_SLEEP_MODE);
_wifiInject();
_wifiConfigure();
// Message callbacks
wifiRegister(_wifiCallback);
#if WIFI_AP_CAPTIVE
wifiRegister(_wifiCaptivePortal);
#endif
#if DEBUG_SUPPORT
wifiRegister(_wifiDebug);
#endif
#if WEB_SUPPORT
wsOnSendRegister(_wifiWebSocketOnSend);
wsOnReceiveRegister(_wifiWebSocketOnReceive);
wsOnAfterParseRegister(_wifiConfigure);
wsOnActionRegister(_wifiWebSocketOnAction);
#endif
#if TERMINAL_SUPPORT
_wifiInitCommands();
#endif
// Register loop
espurnaRegisterLoop(wifiLoop);
}
void wifiLoop() {
// Main wifi loop
jw.loop();
// Process captrive portal DNS queries if in AP mode only
#if WIFI_AP_CAPTIVE
if ((WiFi.getMode() & WIFI_AP) == WIFI_AP) {
_wifi_dnsServer.processNextRequest();
}
#endif
// Do we have a pending scan?
if (_wifi_scan_client_id > 0) {
_wifiScan(_wifi_scan_client_id);
_wifi_scan_client_id = 0;
}
// Check if we should disable AP
_wifiCheckAP();
}