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jmri_wifi.cpp
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jmri_wifi.cpp
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/*
* © 2022 Pete Nevill
* All rights reserved.
*
* This file is part of JMRI MQTT Accesssory Client
*
* This is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* It is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with CommandStation. If not, see <https://www.gnu.org/licenses/>.
*/
#include "jmri_wifi.h"
WiFiEventHandler gotIpEventHandler, disconnectedEventHandler;
float WifiInterface::_jrmi_mqtt_v_latest = 99;
//initiates wifi setup
void WifiInterface::wifi_setup() {
WiFi.disconnect();
//try to connect to wifi
WiFi.mode(WIFI_STA);
WiFi.begin(jmri_data.data.ssid, jmri_data.data.pass);
gotIpEventHandler = WiFi.onStationModeGotIP([](const WiFiEventStationModeGotIP& event) {
UNUSED(event);
WiFi.setAutoReconnect(true);
WiFi.persistent(true);
JMRI_HELPER::logging(1,F("\nConnected to Wifi: %s\n"), WiFi.SSID());
JMRI_HELPER::logging(1,F("Client IP: %s\n"), WiFi.localIP().toString().c_str());
JMRI_HELPER::logging(1,F("MAC: %s\n\n"), WiFi.macAddress().c_str());
});
disconnectedEventHandler = WiFi.onStationModeDisconnected([](const WiFiEventStationModeDisconnected& event){
UNUSED(event);
JMRI_HELPER::logging(1,F("\nWiFi lost connection, trying to reconnect."));
});
// Wait some time (xx seconds) to connect to wifi
JMRI_HELPER::logging(1,F("Waiting for Wifi to come up..."));
for(int i = 0; i < WIFITIMEOUT && WiFi.status() != WL_CONNECTED; i++) {
JMRI_HELPER::logging(1,F("."));
delay(800);
}
if (WiFi.status() != WL_CONNECTED &&
strcmp(DEFAULTSSID, jmri_data.data.ssid) != 0 &&
strcmp(DEFAULTPASSWORD, jmri_data.data.pass) != 0 ) {
JMRI_HELPER::logging(1,F("\nProblem connecting to WiFi with saved credentials, trying user defined!\n"));
JMRI_HELPER::logging(1,F("Saved SSID: %s, saved Pass: %s\n\n"), jmri_data.data.ssid, jmri_data.data.pass );
WiFi.begin(DEFAULTSSID, DEFAULTPASSWORD);
JMRI_HELPER::logging(1,F("Waiting for Wifi to come up..."));
for(int i = 0; i < WIFITIMEOUT && WiFi.status() != WL_CONNECTED; i++) {
JMRI_HELPER::logging(1,F("."));
delay(800);
}
if (WiFi.status() == WL_CONNECTED ) {
JMRI_HELPER::logging(1,F("Saveing credentials...\n"));
sprintf(jmri_data.data.ssid, DEFAULTSSID);
sprintf(jmri_data.data.pass, DEFAULTPASSWORD);
JMRI_STORE::saveConfig();
}
}
//failed. So request a new ssid and password
if (WiFi.status() != WL_CONNECTED ) {
JMRI_HELPER::logging(1,F("\nProblem connecting to wifi with existing credentials.\nAssuming a reset is required...\n"));
JMRI_HELPER::logging(1,F("Saved SSID: %s Pass: %s\n\n"), jmri_data.data.ssid, jmri_data.data.pass );
JMRI_HELPER::logging(1,F("User defined (credentials.h) SSID: %s Pass: %s\n\n"), DEFAULTSSID, DEFAULTPASSWORD);
scan();
}
JMRI_HELPER::logging(2,F("Heap size: %u\n"), ESP.getFreeHeap());
}
//scan in AP to get list of broadcast SSID
//set up AP mode in order for user to provide local SSID and password
void WifiInterface::scan(){
WiFi.disconnect();
delay(100);
WiFi.scanNetworks();
JMRI_HELPER::logging(0,F("Scan completed.\n"));
WiFi.softAP("JMRI-ACC-" + WiFi.macAddress(), "");
JMRI_HELPER::logging(1,F("JMRI Accessory Wifi Credentials Modification"));
JMRI_HELPER::logging(0,F("\nLocal access point running...\n"));
JMRI_HELPER::logging(0,F("Connect to AP: JMRI-ACC-%s\n"), WiFi.macAddress().c_str() );
JMRI_HELPER::logging(0,F("Then navigate to this IP: %s, using a browser.\n"), WiFi.softAPIP().toString().c_str());
}
float WifiInterface::getLatestVer(){
HTTPClient _httpclient;
BearSSL::WiFiClientSecure _wificlientssl;
_wificlientssl.setInsecure();
bool mfln = _wificlientssl.probeMaxFragmentLength("github.com", 443, 512);
if (mfln){
JMRI_HELPER::logging(2,F("MFLN supported\n"));
_wificlientssl.setBufferSizes(512, 512);
} else {
JMRI_HELPER::logging(2,F("MFLN NOT supported\n"));
}
if (_httpclient.begin(_wificlientssl, "https://github.com/ear9mrn/jmri_mqtt_client/releases/latest")) {
uint16_t httpCode = _httpclient.GET();
if (httpCode > 0) {
// HTTP header has been send and Server response header has been handled
JMRI_HELPER::logging(2,F("[HTTPS] GET... code: %d\n"), httpCode);
// file found at server
if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY || httpCode == 302) {
String payload = _httpclient.getString();
uint8_t pos1 = payload.indexOf("tag/");
pos1+=4;
uint8_t pos2 = payload.substring(pos1).indexOf("\"");
String payloadV = payload.substring(pos1,pos1+pos2);
_jrmi_mqtt_v_latest = payloadV.toFloat();
JMRI_HELPER::logging(2,F("Payload: %s\n"),payload.c_str());
JMRI_HELPER::logging(1,F("Latest version %04.2f\n"),_jrmi_mqtt_v_latest);
}
} else {
JMRI_HELPER::logging(0,F("https: gitub.com request failed, error: %s\n"), _httpclient.errorToString(httpCode).c_str());
}
_httpclient.end();
JMRI_HELPER::logging(2,F("Memory free : %d\n"), ESP.getFreeHeap());
} else {
JMRI_HELPER::logging(0,F("https: Unable to connect to github.com...\n"));
}
JMRI_HELPER::logging(2,F("Heap size: %u\n"), ESP.getFreeHeap());
return _jrmi_mqtt_v_latest;
}