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GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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#pragma once
/*! \def char AP_HTTP_HEAD[] PROGMEM
Start of HTML output
*/
const char AP_HTTP_HEAD[] PROGMEM = "<!DOCTYPE html><html lang=\"en\"><head><meta charset=\"utf-8\"><meta name=\"viewport\" content=\"width=device-width, initial-scale=1, user-scalable=no\"/><title>{v}</title>";
/*! \def AP_HTTP_STYLE[] PROGMEM
Style for our access point
*/
const char AP_HTTP_STYLE[] PROGMEM = "<style type=\"text/css\">h1 { font-weight: normal; } .msgbox { font-size:1.2rem; line-height: 1.8em; padding: 0.5em; background-color: #ddffff; border-left: 6px solid #ccc; margin-bottom:1em; } .c{text-align:center}div,input{padding:5px;font-size:1em}input{width:95%;margin-top:5px;margin-bottom:10px}body{text-align:center;font-family:verdana;}button{border:0;border-radius:.3rem;background-color:#1fa3ec;color:#fff;line-height:2.6rem;font-size:1.2rem;width:100%}.q{float:right;width:64px;text-align:right}.l{background:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAMAAABEpIrGAAAALVBMVEX///8EBwfBwsLw8PAzNjaCg4NTVVUjJiZDRUUUFxdiZGSho6OSk5Pg4eFydHTCjaf3AAAAZElEQVQ4je2NSw7AIAhEBamKn97/uMXEGBvozkWb9C2Zx4xzWykBhFAeYp9gkLyZE0zIMno9n4g19hmdY39scwqVkOXaxph0ZCXQcqxSpgQpONa59wkRDOL93eAXvimwlbPbwwVAegLS1HGfZAAAAABJRU5ErkJggg==) no-repeat left center;background-size:1em;}.cfail,.cok{text-align:center; font-size:1.2rem; line-height: 2em; margin-top: 1em; padding: 0.7em; display:none;} .cfail{color: #FFFFFF;background-color: #ff8433;} .cok{ background-color: #6aff33;}</style>";
/** Scripts for our page */
const char AP_HTTP_SCRIPT[] PROGMEM = "<script>function c(l){document.getElementById('s').value=l.innerText||l.textContent;document.getElementById('p').focus();}</script>";
/** End of the header section and beginning of the body */
const char AP_HTTP_HEAD_END[] PROGMEM = "</head><body><div style='text-align:left;display:inline-block;min-width:260px;'>";
/** Start of our HTMl configuration Form */
const char AP_HTTP_PORTAL_OPTIONS[] PROGMEM = "<div class=\"msgbox\">Connect this device to a WiFi network. Select the option to find a WiFi network.</div><form action=\"/wifi\" method=\"get\"><button>Configure WiFi (Auto Scan)</button></form><br/><form action=\"/0wifi\" method=\"get\"><button style=\"background-color:#bbbbbb;\">Configure WiFi (Manual)</button></form><!--<br/><form action=\"/i\" method=\"get\"><button>Info</button></form><br/></form>-->";
/** HTML snippet for wifi scanning */
const char AP_HTTP_ITEM[] PROGMEM = "<div><a href='#p' onclick='c(this)'>{v}</a>&nbsp;<span class='q {i}'>{r}%</span></div>";
/** HTML form for saving wifi connection details */
const char AP_HTTP_FORM_START[] PROGMEM ="<form method=\"post\" action=\"wifisave\"><label>Enter WiFi Name ('SSID'):</label><input id=\"s\" name=\"s\" length=32 placeholder=\"Example: Home_Network_2002\"><label>Enter WiFi Password:</label><input id=\"p\" name=\"p\" length=64 type=\"password\" placeholder=\"Password123\"><br/>";;
/** HTML snippet for our custom parameters */
const char AP_HTTP_FORM_PARAM[] PROGMEM = "<br/><input id='{i}' name='{n}' maxlength={l} placeholder='{p}' value='{v}' {c}>";
/** The end of our HTML Form */
const char AP_HTTP_FORM_END[] PROGMEM = "<br/><button type='submit'>Save and Connect</button></form>";
/** HTML snippet to recan for networks */
const char AP_HTTP_SCAN_LINK[] PROGMEM = "<br/><div class=\"c\"><a href=\"/wifi\">Re-scan</a></div>";
/** HTML snippet for saved confirmation */
// https://stackoverflow.com/questions/20760635/why-does-setting-xmlhttprequest-responsetype-before-calling-open-throw
// https://esprima.org/demo/validate.html
// https://javascript-minifier.com/
/* Use JavaScript to ping the ESP periodically @ the AP IP address.
* If it comes back as an AP again then we know the connection to the WiFi didn't work.
* We wait about 30 seconds to determine this outcome. This isn't 100% foolproof, but should be good enough.
*/
/*
<script type="text/javascript">
function doPing() {
//if ( timeout_count > 20 ) {
if ( attempt_count > 20 ) { // wait about a minute
window.clearInterval(myPinger), document.getElementById("conn_ok").style.display = "block"
}
var o = new XMLHttpRequest;
o.onload = function() {
console.log(this.responseText), document.getElementById("conn_fail").style.display = "block", window.clearInterval(myPinger)
}, o.ontimeout = function(o) {
console.log("Timeout Counter is: " + timeout_count++)
}, o.open("GET", "/foo"), o.timeout = 1000, o.send(null), console.log("Ping counter is: " + attempt_count++)
}
attempt_count = 0;
timeout_count = 0;
var myPinger = window.setInterval(doPing, 3000);
</script>
*/
const char AP_HTTP_SAVED[] PROGMEM = "<div>Credentials Saved.<br />Attempting to connect to WiFi network. Please wait.... <br /><script type=\"text/javascript\">function doPing(){attempt_count>20&&(window.clearInterval(myPinger),document.getElementById(\"conn_ok\").style.display=\"block\");var t=new XMLHttpRequest;t.onload=function(){console.log(this.responseText),document.getElementById(\"conn_fail\").style.display=\"block\",window.clearInterval(myPinger)},t.ontimeout=function(t){console.log(\"Timeout Counter is: \"+timeout_count++)},t.open(\"GET\",\"/foo\"),t.timeout=1e3,t.send(null),console.log(\"Ping counter is: \"+attempt_count++)}attempt_count=0,timeout_count=0;var myPinger=window.setInterval(doPing,3e3);</script><div class=\"cok\" id=\"conn_ok\">Connected to {ap} !<br />You may now close this window. </div><div class=\"cfail\" id=\"conn_fail\">Failed to connect to {ap}!<br /><a href=\"/\">Click here</a> to try again.</div></div>";
/** End of the HTML page */
const char AP_HTTP_END[] PROGMEM = "</div></body></html>";
/** HTML snippet for our custom parameters portal form */
const char AP_HTTP_PORTAL_PARAM_OPTIONS[] PROGMEM = "<form action=\"/params\" method=\"get\"><button>Configure Parameters</button></form><br/><form action=\"/i\" method=\"get\"><button>Info</button></form><br/>";
/** HTML snippet for our custom parameters save */
const char AP_HTTP_FORM_PARAM_START[] PROGMEM ="<form method=\"get\" action=\"wifisave\">";

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lib/WiFiConnect/WiFiConnect.cpp
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#include "WiFiConnect.h"
WiFiConnect::WiFiConnect() {
_apName[0]='\0';
_apPassword[0]='\0';
}
void WiFiConnect::setAPModeTimeoutMins(int mins) {
if (mins > 0) _apTimeoutMins = mins;
}
void WiFiConnect::setAPName(const char *apName) {
if(strlen(apName)>32) return;
if(strlen(apName) == 0 || (apName == NULL)) {
String ssid = "ESP_" + String(ESP_getChipId());
strcpy(_apName,ssid.c_str());
} else if (apName != NULL && strlen(apName)>0) strcpy(_apName,apName);
}
const char* WiFiConnect::getAPName() {
if ((_apName == NULL ) || strlen(_apName)==0) setAPName(NULL);
return _apName;
}
void WiFiConnect::addParameter(WiFiConnectParam *p) {
_params[_paramsCount] = p;
_paramsCount++;
}
boolean WiFiConnect::startConfigurationPortal() {
return startConfigurationPortal(_apName, _apPassword);
}
boolean WiFiConnect::startConfigurationPortal(const char *apName, const char *apPassword, bool paramsMode) {
_lastAPPage = millis();
delay(50); // Huh?
if (WiFi.status() != WL_CONNECTED) {
if (paramsMode) startConfigurationPortal(apName, apPassword, false);
else WiFi.mode(WIFI_AP);
} else WiFi.mode(WIFI_AP_STA); // start an access point on the same channel we're already connected to.
dnsServer.reset(new DNSServer());
server.reset(new WebServer(80));
setAPName(apName);
if (strlen(apPassword)>0){
if (strlen(apPassword) < 8 || strlen(apPassword) > 63) apPassword = NULL;
strcpy(_apPassword,apPassword);
}
if (_ap_static_ip) WiFi.softAPConfig(_ap_static_ip, _ap_static_gw, _ap_static_sn);
if(strlen(apPassword) > 0) WiFi.softAP(_apName, _apPassword);//password option
else WiFi.softAP(_apName);
delay(450);
dnsServer->setErrorReplyCode(DNSReplyCode::NoError);
dnsServer->start(53, "*", WiFi.softAPIP());
if (paramsMode) {
server->on("/", std::bind(&WiFiConnect::handleParamRoot, this));
server->on("/param", std::bind(&WiFiConnect::handleParams, this));
server->on("/params", std::bind(&WiFiConnect::handleParams, this));
server->on("/wifisave", std::bind(&WiFiConnect::handleWifiSave, this));
server->on("/i", std::bind(&WiFiConnect::handleInfo, this));
server->on("/fwlink", std::bind(&WiFiConnect::handleParamRoot, this)); //Microsoft captive portal. Maybe not needed. Might be handled by notFound handler.
server->on("/hotspot_detect.html", std::bind(&WiFiConnect::handleParamRoot, this));
} else { // Config portal mode
server->on("/", std::bind(&WiFiConnect::handleRoot, this));
server->on("/wifi", std::bind(&WiFiConnect::handleWifi, this, true)); // Auto Scan of APs
server->on("/0wifi", std::bind(&WiFiConnect::handleWifi, this, false)); // Manual entry form only
server->on("/wifisave", std::bind(&WiFiConnect::handleWifiSave, this));
server->on("/i", std::bind(&WiFiConnect::handleInfo, this)); // Not of interest - commented out in static HTML
server->on("/r", std::bind(&WiFiConnect::handleReset, this));
server->on("/fwlink", std::bind(&WiFiConnect::handleRoot, this)); //Microsoft captive portal. Maybe not needed. Might be handled by notFound handler.
server->on("/hotspot_detect.html", std::bind(&WiFiConnect::handleRoot, this));
} // config portal
server->onNotFound(std::bind(&WiFiConnect::handleNotFound, this));
server->begin(); // Web server start
_lastAPPage = millis();
_readyToConnect = false;
while (true) {
dnsServer->processNextRequest();
server->handleClient();
if (_readyToConnect) {
_readyToConnect = false;
if (autoConnect(_ssid.c_str(), _password.c_str(), WIFI_AP_STA)) {
WiFi.mode(WIFI_STA);
delay(500);
break; // we connected!
}
} // ready to connect
yield();
}
//teardown??
server->close();
server.reset();
dnsServer.reset();
boolean con = (WiFi.status() == WL_CONNECTED);
if (!con) WiFi.mode(WIFI_STA);
return con;
}
boolean WiFiConnect::autoConnect() {
return autoConnect(NULL, NULL, WIFI_STA);
}
boolean WiFiConnect::autoConnect(char const *ssidName, char const *ssidPassword, WiFiMode_t acWiFiMode) {
WiFi.mode(acWiFiMode);
if (WiFi.status() == WL_CONNECTED) return true;
if (_sta_static_ip) WiFi.config(_sta_static_ip, _sta_static_gw, _sta_static_sn);
int c = 0;
while (c < _retryAttempts) {
long ms = millis();
if (ssidName == NULL || strlen(ssidName)==0) {
wifi_config_t conf;
esp_wifi_get_config(WIFI_IF_STA, &conf);
String stored_ssid = String(reinterpret_cast<const char*>(conf.sta.ssid));
if (stored_ssid == "") return false;
WiFi.begin(); // persistence is on by default, so if this WiFi connection should happen automatically
} else WiFi.begin(ssidName, ssidPassword);
while (millis() - (unsigned long int)ms < ( (unsigned int)_connectionTimeoutSecs * 1000)) {
int ws = WiFi.status();
if (ws == WL_CONNECTED) {
delay(500);//wait for ip to refresh
return true;
} else if (ws == WL_CONNECT_FAILED) {
delay(500);
} else {
delay(200);
yield();
}
} c++;
} // attemps
return false;
}
void WiFiConnect::setRetryAttempts(int attempts) {
if (attempts >= 1) {
_retryAttempts = attempts;
}
}
void WiFiConnect::setConnectionTimeoutSecs(int timeout) {
if (timeout >= 1) _connectionTimeoutSecs = timeout;
}
void WiFiConnect::resetSettings() {
WiFi.disconnect(true);
esp_wifi_restore();
WiFi.begin("0", "0");
delay(1000);
ESP.restart();
delay(2000);
}
const char* WiFiConnect::statusToString(int state) {
switch (state) {
case WL_CONNECTED:
return "WL_CONNECTED";
case WL_CONNECT_FAILED:
return "WL_CONNECT_FAILED";
case WL_CONNECTION_LOST:
return "WL_CONNECTION_LOST";
case WL_DISCONNECTED:
return "WL_DISCONNECTED";
case WL_SCAN_COMPLETED:
return "WL_SCAN_COMPLETED";
case WL_NO_SSID_AVAIL:
return "WL_NO_SSID_AVAIL";
case WL_IDLE_STATUS:
return "WL_IDLE_STATUS";
case WL_NO_SHIELD:
return "WL_NO_SHIELD";
default:
return "UNKNOWN CODE";
}
}
/**************************************************************************/
/*!
@brief Handles the web request for root in the Parameters Portal and
sends back the html menu
*/
/**************************************************************************/
void WiFiConnect::handleParamRoot() {
if (captivePortal()) { // If captive portal redirect instead of displaying the page.
return;
}
_lastAPPage = millis();
String page = FPSTR(AP_HTTP_HEAD);
page.replace("{v}", "Options");
page += FPSTR(AP_HTTP_SCRIPT);
page += FPSTR(AP_HTTP_STYLE);
page += FPSTR(AP_HTTP_HEAD_END);
page += String(F("<h1>"));
page += _apName;
page += String(F("</h1>"));
// page += String(F("<h3>WiFiConnect</h3>"));
page += FPSTR(AP_HTTP_PORTAL_PARAM_OPTIONS);
page += FPSTR(AP_HTTP_END);
server->sendHeader("Content-Length", String(page.length()));
server->send(200, "text/html", page);
}
/**************************************************************************/
/*!
@brief Handles the web request for displaying custom parameters
in the Parameters Portal and sends back the html
*/
/**************************************************************************/
void WiFiConnect::handleParams() {
_lastAPPage = millis();
String page = FPSTR(AP_HTTP_HEAD);
page.replace("{v}", "Config Params");
page += FPSTR(AP_HTTP_SCRIPT);
page += FPSTR(AP_HTTP_STYLE);
page += FPSTR(AP_HTTP_HEAD_END);
page += FPSTR(AP_HTTP_FORM_PARAM_START);
char parLength[4];
// add the extra parameters to the form
for (int i = 0; i < _paramsCount; i++) {
if (_params[i] == NULL) {
break;
}
String pitem = FPSTR(AP_HTTP_FORM_PARAM);
if (_params[i]->getID() != NULL) {
pitem.replace("{i}", _params[i]->getID());
pitem.replace("{n}", _params[i]->getID());
pitem.replace("{p}", _params[i]->getPlaceholder());
snprintf(parLength, 4, "%d", _params[i]->getValueLength());
pitem.replace("{l}", parLength);
pitem.replace("{v}", _params[i]->getValue());
pitem.replace("{c}", _params[i]->getCustomHTML());
} else {
pitem = _params[i]->getCustomHTML();
}
page += pitem;
}
if (_params[0] != NULL) {
page += "<br/>";
}
page += FPSTR(AP_HTTP_FORM_END);
page += FPSTR(AP_HTTP_END);
server->sendHeader("Content-Length", String(page.length()));
server->send(200, "text/html", page);
}
/**************************************************************************/
/*!
@brief Handles the web request for displaying the menu in the
Access Point portal.
*/
/**************************************************************************/
void WiFiConnect::handleRoot() {
if (captivePortal()) { // If captive portal redirect instead of displaying the page.
return;
}
_lastAPPage = millis();
String page = FPSTR(AP_HTTP_HEAD);
page.replace("{v}", "Options");
page += FPSTR(AP_HTTP_SCRIPT);
page += FPSTR(AP_HTTP_STYLE);
page += FPSTR(AP_HTTP_HEAD_END);
page += String(F("<h1>"));
page += _apName;
page += String(F("</h1>"));
//page += String(F("<h3>WiFiConnect</h3>"));
page += FPSTR(AP_HTTP_PORTAL_OPTIONS);
page += FPSTR(AP_HTTP_END);
server->sendHeader("Content-Length", String(page.length()));
server->send(200, "text/html", page);
}
/**************************************************************************/
/*!
@brief Handles the web request for entering the SSID and Password of
the network you want to connect too.
Optionally scans and shows available networks.
@param scan
Whether to scan for networks or not.
*/
/**************************************************************************/
void WiFiConnect::handleWifi(boolean scan) {
_lastAPPage = millis();
String page = FPSTR(AP_HTTP_HEAD);
page.replace("{v}", "Select WiFi");
page += FPSTR(AP_HTTP_SCRIPT);
page += FPSTR(AP_HTTP_STYLE);
page += FPSTR(AP_HTTP_HEAD_END);
if (scan) {
int n = WiFi.scanNetworks();
if (n == 0) {
page += F("No networks found. Refresh to scan again.");
} else {
//sort networks
int indices[n];
for (int i = 0; i < n; i++) {
indices[i] = i;
}
// RSSI SORT
// old sort
for (int i = 0; i < n; i++) {
for (int j = i + 1; j < n; j++) {
if (WiFi.RSSI(indices[j]) > WiFi.RSSI(indices[i])) {
std::swap(indices[i], indices[j]);
}
}
}
String cssid;
for (int i = 0; i < n; i++) {
if (indices[i] == -1) continue;
cssid = WiFi.SSID(indices[i]);
for (int j = i + 1; j < n; j++) {
if (cssid == WiFi.SSID(indices[j])) {
indices[j] = -1; // set dup aps to index -1
}
}
}
//display networks in page
for (int i = 0; i < n; i++) {
if (indices[i] == -1) continue; // skip dups
int quality = getRSSIasQuality(WiFi.RSSI(indices[i]));
if (_minimumQuality == -1 || _minimumQuality < quality) {
String item = FPSTR(AP_HTTP_ITEM);
String rssiQ;
rssiQ += quality;
item.replace("{v}", WiFi.SSID(indices[i]));
item.replace("{r}", rssiQ);
#if defined(ESP8266)
if (WiFi.encryptionType(indices[i]) != ENC_TYPE_NONE) {
#else
if (WiFi.encryptionType(indices[i]) != WIFI_AUTH_OPEN) {
#endif
item.replace("{i}", "l");
} else {
item.replace("{i}", "");
}
//DEBUG_WM(item);
page += item;
delay(0);
}
}
page += "<br/>";
}
}
page += FPSTR(AP_HTTP_FORM_START);
char parLength[4];
// add the extra parameters to the form
for (int i = 0; i < _paramsCount; i++) {
if (_params[i] == NULL) {
break;
}
String pitem = FPSTR(AP_HTTP_FORM_PARAM);
if (_params[i]->getID() != NULL) {
pitem.replace("{i}", _params[i]->getID());
pitem.replace("{n}", _params[i]->getID());
pitem.replace("{p}", _params[i]->getPlaceholder());
snprintf(parLength, 4, "%d", _params[i]->getValueLength());
pitem.replace("{l}", parLength);
pitem.replace("{v}", _params[i]->getValue());
pitem.replace("{c}", _params[i]->getCustomHTML());
} else {
pitem = _params[i]->getCustomHTML();
}
page += pitem;
}
if (_params[0] != NULL) {
page += "<br/>";
}
if (_sta_static_ip) {
String item = FPSTR(AP_HTTP_FORM_PARAM);
item.replace("{i}", "ip");
item.replace("{n}", "ip");
item.replace("{p}", "Static IP");
item.replace("{l}", "15");
item.replace("{v}", _sta_static_ip.toString());
page += item;
item = FPSTR(AP_HTTP_FORM_PARAM);
item.replace("{i}", "gw");
item.replace("{n}", "gw");
item.replace("{p}", "Static Gateway");
item.replace("{l}", "15");
item.replace("{v}", _sta_static_gw.toString());
page += item;
item = FPSTR(AP_HTTP_FORM_PARAM);
item.replace("{i}", "sn");
item.replace("{n}", "sn");
item.replace("{p}", "Subnet");
item.replace("{l}", "15");
item.replace("{v}", _sta_static_sn.toString());
page += item;
page += "<br/>";
}
page += FPSTR(AP_HTTP_FORM_END);
page += FPSTR(AP_HTTP_SCAN_LINK);
page += FPSTR(AP_HTTP_END);
server->sendHeader("Content-Length", String(page.length()));
server->send(200, "text/html", page);
}
void WiFiConnect::handleWifiSave() {
_lastAPPage = millis();
_ssid = server->arg("s").c_str();
_ssid.trim();
_password = server->arg("p").c_str();
_password.trim();
//parameters
for (int i = 0; i < _paramsCount; i++) {
if (_params[i] == NULL) {
break;
}
//read parameter
String value = server->arg(_params[i]->getID()).c_str();
//store it in array
value.toCharArray(_params[i]->_value, _params[i]->_length);
}
if (server->arg("ip") != "") {
//_sta_static_ip.fromString(server->arg("ip"));
String ip = server->arg("ip");
optionalIPFromString(&_sta_static_ip, ip.c_str());
}
if (server->arg("gw") != "") {
String gw = server->arg("gw");
optionalIPFromString(&_sta_static_gw, gw.c_str());
}
if (server->arg("sn") != "") {
String sn = server->arg("sn");
optionalIPFromString(&_sta_static_sn, sn.c_str());
}
String page = FPSTR(AP_HTTP_HEAD);
page.replace("{v}", "Credentials Saved");
page += FPSTR(AP_HTTP_SCRIPT);
page += FPSTR(AP_HTTP_STYLE);
page += FPSTR(AP_HTTP_HEAD_END);
page += FPSTR(AP_HTTP_SAVED);
page.replace("{ap}", _ssid);
page += FPSTR(AP_HTTP_END);
server->sendHeader("Content-Length", String(page.length()));
server->send(200, "text/html", page);
_readyToConnect = true;
}
/**************************************************************************/
/*!
@brief Handles the web request and shows basic information about the chip.
TODO: ESP32 information still needs completing.
*/
/**************************************************************************/
void WiFiConnect::handleInfo() {
_lastAPPage = millis();
String page = FPSTR(AP_HTTP_HEAD);
page.replace("{v}", "Info");
page += FPSTR(AP_HTTP_SCRIPT);
page += FPSTR(AP_HTTP_STYLE);
page += FPSTR(AP_HTTP_HEAD_END);
page += F("<dl>");
page += F("<dt>Chip ID</dt><dd>");
page += ESP_getChipId();
page += F("</dd>");
page += F("<dt>Flash Chip ID</dt><dd>");
#if defined(ESP8266)
page += ESP.getFlashChipId();
#else
// TODO
page += F("TODO");
#endif
page += F("</dd>");
page += F("<dt>IDE Flash Size</dt><dd>");
page += ESP.getFlashChipSize();
page += F(" bytes</dd>");
page += F("<dt>Real Flash Size</dt><dd>");
#if defined(ESP8266)
page += ESP.getFlashChipRealSize();
#else
// TODO
page += F("TODO");
#endif
page += F(" bytes</dd>");
page += F("<dt>Soft AP IP</dt><dd>");
page += WiFi.softAPIP().toString();
page += F("</dd>");
page += F("<dt>Soft AP MAC</dt><dd>");
page += WiFi.softAPmacAddress();
page += F("</dd>");
page += F("<dt>Station MAC</dt><dd>");
page += WiFi.macAddress();
page += F("</dd>");
page += F("</dl>");
page += FPSTR(AP_HTTP_END);
server->sendHeader("Content-Length", String(page.length()));
server->send(200, "text/html", page);
}
/**************************************************************************/
/*!
@brief Handles the reset web request and and restarts the chip.
Does not clear settings.
*/
/**************************************************************************/
void WiFiConnect::handleReset() {
_lastAPPage = millis();
String page = FPSTR(AP_HTTP_HEAD);
page.replace("{v}", "Info");
page += FPSTR(AP_HTTP_SCRIPT);
page += FPSTR(AP_HTTP_STYLE);
page += FPSTR(AP_HTTP_HEAD_END);
page += F("Module will reset in a few seconds.");
page += FPSTR(AP_HTTP_END);
server->sendHeader("Content-Length", String(page.length()));
server->send(200, "text/html", page);
delay(5000);
ESP.restart();
delay(2000);
}
/**************************************************************************/
/*!
@brief Handles the 204 web request from Android devices
*/
/**************************************************************************/
void WiFiConnect::handle204() {
_lastAPPage = millis();
handleRoot();
}
/**************************************************************************/
/*!
@brief Handles any web requests that are not found.
*/
/**************************************************************************/
void WiFiConnect::handleNotFound() {
if (captivePortal()) { // If captive portal redirect instead of displaying the error page.
return;
}
_lastAPPage = millis();
String message = "File Not Found\n\n";
message += "URI: ";
message += server->uri();
message += "\nMethod: ";
message += ( server->method() == HTTP_GET ) ? "GET" : "POST";
message += "\nArguments: ";
message += server->args();
message += "\n";
for ( uint8_t i = 0; i < server->args(); i++ ) {
message += " " + server->argName ( i ) + ": " + server->arg ( i ) + "\n";
}
server->sendHeader("Cache-Control", "no-cache, no-store, must-revalidate");
server->sendHeader("Pragma", "no-cache");
server->sendHeader("Expires", "-1");
server->sendHeader("Content-Length", String(message.length()));
server->send ( 404, "text/plain", message );
}
/**************************************************************************/
/*!
@brief Redirect to captive portal if we get a request for another domain.
Return true in that case so the page handler do not try to
handle the request again.
@return True if we have redirected to our portal, else false and contimue
to handle request
*/
/**************************************************************************/
boolean WiFiConnect::captivePortal() {
if (!isIp(server->hostHeader()) ) {
_lastAPPage = millis();
String msg = "redirect\n";
server->sendHeader("Location", String("http://") + toStringIp(server->client().localIP()), true);
server->sendHeader("Content-Length", String(msg.length()));
server->send ( 302, "text/plain", msg); // Empty content inhibits Content-length header so we have to close the socket ourselves.
//server->client().stop(); // Stop is needed because we sent no content length
return true;
}
return false;
}
int WiFiConnect::getRSSIasQuality(int RSSI) {
int quality = 0;
if (RSSI <= -100) {
quality = 0;
} else if (RSSI >= -50) {
quality = 100;
} else {
quality = 2 * (RSSI + 100);
}
return quality;
}
boolean WiFiConnect::isIp(String str) {
for (unsigned int i = 0; i < str.length(); i++) {
int c = str.charAt(i);
if (c != '.' && (c < '0' || c > '9')) {
return false;
}
}
return true;
}
String WiFiConnect::toStringIp(IPAddress ip) {
String res = "";
for (int i = 0; i < 3; i++) {
res += String((ip >> (8 * i)) & 0xFF) + ".";
}
res += String(((ip >> 8 * 3)) & 0xFF);
return res;
}
void WiFiConnect::setAPStaticIPConfig(IPAddress ip, IPAddress gw, IPAddress sn) {
_ap_static_ip = ip;
_ap_static_gw = gw;
_ap_static_sn = sn;
}
void WiFiConnect::setSTAStaticIPConfig(IPAddress ip, IPAddress gw, IPAddress sn) {
_sta_static_ip = ip;
_sta_static_gw = gw;
_sta_static_sn = sn;
}

87
lib/WiFiConnect/WiFiConnect.h
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@@ -1,87 +0,0 @@
#pragma once
#include <Arduino.h>
#include <WiFi.h>
#include <FS.h>
using fs::FS;
#include <WebServer.h>
#include <DNSServer.h>
#include <memory>
#include <esp_wifi.h>
#define ESP_getChipId() ((uint32_t)ESP.getEfuseMac())///< Gets an ID from the chip
#include "WC_AP_HTML.h"
#include "WiFiConnectParam.h"
class WiFiConnect {
public:
WiFiConnect();
boolean startConfigurationPortal();
boolean startConfigurationPortal(const char* apName, const char* apPassword = NULL, bool paramsMode = false);
void addParameter(WiFiConnectParam *p);
void setAPName(const char* apName);
const char* getAPName();
void resetSettings();
boolean autoConnect();
boolean autoConnect(const char* ssidName, const char* ssidPassword = NULL, WiFiMode_t acWiFiMode = WIFI_STA);
void setAPStaticIPConfig(IPAddress ip, IPAddress gw, IPAddress sn);
void setSTAStaticIPConfig(IPAddress ip, IPAddress gw, IPAddress sn);
void setRetryAttempts(int attempts);
void setConnectionTimeoutSecs(int timeout);
void setAPModeTimeoutMins(int mins);
boolean captivePortal();
//helpers
const char* statusToString(int state);
int getRSSIasQuality(int RSSI);
boolean isIp(String str);
String toStringIp(IPAddress ip);
private:
int _retryAttempts = 3; ///< Number of attempts when trying to connect to WiFi network
int _connectionTimeoutSecs = 10; ///< How log to wait for the connection to succeed or fail
int _apTimeoutMins = 3; ///< The amount of minutes of inactivity before the access point exits it routine
long _lastAPPage = 0;
int _minimumQuality = 8;
int _paramsCount = 0;
boolean _readyToConnect = false;
String _ssid = " ";
String _password = " ";
WiFiConnectParam* _params[WiFiConnect_MAX_PARAMS]; ///< Array to hold custom parameters
std::unique_ptr<DNSServer> dnsServer;
std::unique_ptr<WebServer> server;
char _apName[33];
char _apPassword[65];
IPAddress _ap_static_ip; ///< Variable for holding Static IP Address for the access point
IPAddress _ap_static_gw; ///< Variable for holding Static Gateway IP Address for the access point
IPAddress _ap_static_sn; ///< Variable for holding Static Subnet Mask IP Address for the access point
IPAddress _sta_static_ip; ///< Variable for holding Static IP Address for the network connection
IPAddress _sta_static_gw; ///< Variable for holding Static Gateway IP Address for the network connection
IPAddress _sta_static_sn; ///< Variable for holding Static Subnet Mask IP Address for the network connection
void handleRoot();
void handleParamRoot();
void handleParams();
void handleWifi(boolean scan);
void handleWifiSave();
void handleInfo();
void handleReset();
void handle204();
void handleNotFound();
template <class T>
auto optionalIPFromString(T *obj, const char *s) -> decltype(obj->fromString(s)) { return obj->fromString(s); }
bool optionalIPFromString(...) {return false;}
};

55
lib/WiFiConnect/WiFiConnectParam.cpp
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#include "WiFiConnectParam.h"
WiFiConnectParam::WiFiConnectParam(const char *custom) {
_id = NULL;
_placeholder = NULL;
_length = 0;
_value = NULL;
_customHTML = custom;
}
WiFiConnectParam::WiFiConnectParam(const char *id, const char *placeholder, const char *defaultValue, int length) {
init(id, placeholder, defaultValue, length, "");
}
WiFiConnectParam::WiFiConnectParam(const char *id, const char *placeholder, const char *defaultValue, int length, const char *custom) {
init(id, placeholder, defaultValue, length, custom);
}
void WiFiConnectParam::init(const char *id, const char *placeholder, const char *defaultValue, int length, const char *custom) {
_id = id;
_placeholder = placeholder;
_length = length;
setValue(defaultValue);
_customHTML = custom;
}
void WiFiConnectParam::setValue(const char *newValue){
if(_length > 0) {
// you know what was here in upstream
_value = new char[_length + 1];
for (int i = 0; i < _length; i++) _value[i] = 0;
if (newValue != NULL) strncpy(_value, newValue, _length);
}
}
const char* WiFiConnectParam::getValue() {
return _value;
}
const char* WiFiConnectParam::getID() {
return _id;
}
const char* WiFiConnectParam::getPlaceholder() {
return _placeholder;
}
int WiFiConnectParam::getValueLength() {
return _length;
}
const char* WiFiConnectParam::getCustomHTML() {
return _customHTML;
}

31
lib/WiFiConnect/WiFiConnectParam.h
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#pragma once
#ifndef WiFiConnect_MAX_PARAMS
#define WiFiConnect_MAX_PARAMS 10 ///< The maximum size of the param array and how many custom parameters we may have
#endif
#include <Arduino.h>
class WiFiConnectParam {
public:
WiFiConnectParam(const char *custom);
WiFiConnectParam(const char *id, const char *placeholder, const char *defaultValue, int length);
WiFiConnectParam(const char *id, const char *placeholder, const char *defaultValue, int length, const char *custom);
const char *getID();
const char *getValue();
const char *getPlaceholder();
int getValueLength();
const char *getCustomHTML();
void setValue(const char *newValue);
private:
const char *_id;
const char *_placeholder;
char *_value;
int _length;
const char *_customHTML;
void init(const char *id, const char *placeholder, const char *defaultValue, int length, const char *custom);
friend class WiFiConnect; ///< Declarion for WiFiConnect class
};

15
lib/WiFiConnect/library.json
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@@ -1,15 +0,0 @@
{
"name": "WifiConnect",
"version": "1.0",
"description": "A WiFi Manager for ESP8266 or ESP32",
"authors":
[
{
"name": "Stuart Blair",
"email": "stuart@bfam.co.uk",
"maintainer": true
}
],
"frameworks": "arduino",
"platforms": "espressif8266, espressif32"
}