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- /* PersWiFiManager
- version 3.0.1
- https://r-downing.github.io/PersWiFiManager/
- */
- #include "PersWiFiManager.h"
- //#ifdef WIFI_HTM_PROGMEM
- const char wifi_htm[] PROGMEM = R"=====(<!DOCTYPE html><html><head><meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no"/><title>ESP WiFi</title><script>function g(i){return document.getElementById(i);};function p(t,l){if(confirm(t)) window.location=l;};function E(s){return document.createElement(s)};var S="setAttribute",A="appendChild",H="innerHTML",X,wl;function scan(){if(X) return;X=new XMLHttpRequest(),wl=document.getElementById('wl');wl[H]="Scanning...";X.onreadystatechange=function(){if (this.readyState==4&&this.status==200){X=0;wl[H]="";this.responseText.split("\n").forEach(function (e){let t=e.split(","), s=t.slice(2).join(',');var d=E('div'),i=E('a'),c=E('a');i[S]('class','s'); c[S]('class','q');i.onclick=function(){g('s').value=s;g('p').focus();};i[A](document.createTextNode(s));c[H]=t[0]+"%"+(parseInt(t[1])?"\uD83D\uDD12":"\u26A0");wl[A](i); wl[A](c);wl[A](document.createElement('br'));});}};X.open("GET","wifi/list",true);X.send();};</script><style>input{padding:5px;font-size:1em;width:95%;}body{text-align:center;font-family:verdana;background-color:black;color:white;}a{color:#1fa3ec;}button{border:0;border-radius:0.3em;background-color:#1fa3ec;color:#fff;line-height:2.4em;font-size:1.2em;width:100%;display:block;}.q{float:right;}.s{display:inline-block;width:14em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}#wl{line-height:1.5em;}</style></head><body><div style='text-align:left;display:inline-block;width:320px;padding:5px'><button onclick="scan()">↻ Scan</button><p id='wl'></p><form method='post' action='/wifi/connect'><input id='s' name='n' length=32 placeholder='SSID'><br><input id='p' name='p' length=64 type='password' placeholder='password'><br><br><button type='submit'>Connect</button></form><br><br><button onclick="p('Start WPS?','/wifi/wps')">WPS Setup</button><br><button onclick="p('Reboot device?','/wifi/rst')">Reboot</button><br><a href="/">Home</a></div></body></html>)=====";
- //#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;
- }
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