/* PersWiFiManager
version 3.0.1
https://r-downing.github.io/PersWiFiManager/
*/
#include "PersWiFiManager.h"
//#ifdef WIFI_HTM_PROGMEM
const char wifi_htm[] PROGMEM = R"=====(ESP WiFiHome )=====";
//#endif
PersWiFiManager::PersWiFiManager(ESP8266WebServer& s, DNSServer& d) {
_server = &s;
_dnsServer = &d;
_apPass = "";
} //PersWiFiManager
bool PersWiFiManager::attemptConnection(const String& ssid, const String& pass) {
//attempt to connect to wifi
WiFi.mode(WIFI_STA);
if (ssid.length()) {
if (pass.length()) WiFi.begin(ssid.c_str(), pass.c_str());
else WiFi.begin(ssid.c_str());
} else {
WiFi.begin();
}
//if in nonblock mode, skip this loop
_connectStartTime = millis();// + 1;
while (!_connectNonBlock && _connectStartTime) {
handleWiFi();
delay(10);
}
return (WiFi.status() == WL_CONNECTED);
} //attemptConnection
void PersWiFiManager::handleWiFi() {
if (!_connectStartTime) return;
if (WiFi.status() == WL_CONNECTED) {
_connectStartTime = 0;
if (_connectHandler) _connectHandler();
return;
}
//if failed or not connected and time is up
if ((WiFi.status() == WL_CONNECT_FAILED) || ((WiFi.status() != WL_CONNECTED) && ((millis() - _connectStartTime) > (1000 * WIFI_CONNECT_TIMEOUT)))) {
startApMode();
_connectStartTime = 0; //reset connect start time
}
} //handleWiFi
void PersWiFiManager::startApMode(){
//start AP mode
IPAddress apIP(192, 168, 1, 1);
WiFi.mode(WIFI_AP);
WiFi.softAPConfig(apIP, apIP, IPAddress(255, 255, 255, 0));
_apPass.length() ? WiFi.softAP(getApSsid().c_str(), _apPass.c_str()) : WiFi.softAP(getApSsid().c_str());
if (_apHandler) _apHandler();
}//startApMode
void PersWiFiManager::setConnectNonBlock(bool b) {
_connectNonBlock = b;
} //setConnectNonBlock
void PersWiFiManager::setupWiFiHandlers() {
IPAddress apIP(192, 168, 1, 1);
_dnsServer->setErrorReplyCode(DNSReplyCode::NoError);
_dnsServer->start((byte)53, "*", apIP); //used for captive portal in AP mode
_server->on("/wifi/list", [&] () {
//scan for wifi networks
int n = WiFi.scanNetworks();
//build array of indices
int ix[n];
for (int i = 0; i < n; i++) ix[i] = i;
//sort by signal strength
for (int i = 0; i < n; i++) for (int j = 1; j < n - i; j++) if (WiFi.RSSI(ix[j]) > WiFi.RSSI(ix[j - 1])) std::swap(ix[j], ix[j - 1]);
//remove duplicates
for (int i = 0; i < n; i++) for (int j = i + 1; j < n; j++) if (WiFi.SSID(ix[i]).equals(WiFi.SSID(ix[j])) && WiFi.encryptionType(ix[i]) == WiFi.encryptionType(ix[j])) ix[j] = -1;
//build plain text string of wifi info
//format [signal%]:[encrypted 0 or 1]:SSID
String s = "";
s.reserve(2050);
for (int i = 0; i < n && s.length() < 2000; i++) { //check s.length to limit memory usage
if (ix[i] != -1) {
s += String(i ? "\n" : "") + ((constrain(WiFi.RSSI(ix[i]), -100, -50) + 100) * 2) + ","
+ ((WiFi.encryptionType(ix[i]) == ENC_TYPE_NONE) ? 0 : 1) + "," + WiFi.SSID(ix[i]);
}
}
//send string to client
_server->send(200, "text/plain", s);
}); //_server->on /wifi/list
_server->on("/wifi/wps", [&]() {
_server->send(200, "text/html", "attempting WPS");
WiFi.mode(WIFI_STA);
WiFi.beginWPSConfig();
delay(100);
if (WiFi.status() != WL_CONNECTED) {
attemptConnection("", "");
}
}); //_server->on /wifi/wps
_server->on("/wifi/connect", [&]() {
_server->send(200, "text/html", "connecting...");
attemptConnection(_server->arg("n"), _server->arg("p"));
}); //_server->on /wifi/connect
_server->on("/wifi/ap", [&](){
_server->send(200, "text/html", "access point: "+getApSsid());
startApMode();
}); //_server->on /wifi/ap
_server->on("/wifi/rst", [&]() {
_server->send(200, "text/html", "Rebooting...");
delay(100);
ESP.restart();
});
//#ifdef WIFI_HTM_PROGMEM
_server->on("/wifi.htm", [&]() {
_server->send(200, "text/html", wifi_htm);
});
//#endif
}//setupWiFiHandlers
bool PersWiFiManager::begin(const String& ssid, const String& pass) {
setupWiFiHandlers();
return attemptConnection(ssid, pass); //switched order of these two for return
} //begin
String PersWiFiManager::getApSsid() {
return _apSsid.length() ? _apSsid : "ESP8266";
} //getApSsid
void PersWiFiManager::setApCredentials(const String& apSsid, const String& apPass) {
if (apSsid.length()) _apSsid = apSsid;
if (apPass.length() >= 8) _apPass = apPass;
} //setApCredentials
void PersWiFiManager::onConnect(WiFiChangeHandlerFunction fn) {
_connectHandler = fn;
}
void PersWiFiManager::onAp(WiFiChangeHandlerFunction fn) {
_apHandler = fn;
}