Ok, ich habe mit dem ESP8266 noch nciht viel gemacht. Aber so wie ich das sehe, gibst Du mit server.send die Webseite aus, deren Inhalt in 'content' stehen muss. D.h., Wenn Du wieder das gleiche anzeigen willst wie in handleRoot, dann musst Du da auch das gleiche ausgeben. Nur darfst Du es eben nicht vom Login abhängig machen. Ich hab' mal auf die Schnelle den Webseitenanteil von handleRoot in eine eigene Funktion gepackt, und dann auch in /output1 ausgegeben:
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
const char* ssid = "Banane";
const char* password = "19ihetc57g";
const char* host = "webcontrol";
// define GPIO pins:
const int output1 = 0;
const int output2 = 2;
// output status variables:
boolean output1_state = true;
boolean output2_state = true;
ESP8266WebServer server(80);
//Check if header is present and correct
bool is_authentified(){
Serial.println("Enter is_authentified");
if (server.hasHeader("Cookie")){
Serial.print("Found cookie: ");
String cookie = server.header("Cookie");
Serial.println(cookie);
if (cookie.indexOf("ESPSESSIONID=1") != -1) {
Serial.println("Authentification Successful");
return true;
}
}
Serial.println("Authentification Failed");
return false;
}
//login page, also called for disconnect
void handleLogin(){
String msg;
if (server.hasHeader("Cookie")){
Serial.print("Found cookie: ");
String cookie = server.header("Cookie");
Serial.println(cookie);
}
if (server.hasArg("DISCONNECT")){
Serial.println("Disconnection");
String header = "HTTP/1.1 301 OK\r\nSet-Cookie: ESPSESSIONID=0\r\nLocation: /login\r\nCache-Control: no-cache\r\n\r\n";
server.sendContent(header);
return;
}
if (server.hasArg("USERNAME") && server.hasArg("PASSWORD")){
if (server.arg("USERNAME") == "admin" && server.arg("PASSWORD") == "admin" ){
String header = "HTTP/1.1 301 OK\r\nSet-Cookie: ESPSESSIONID=1\r\nLocation: /\r\nCache-Control: no-cache\r\n\r\n";
server.sendContent(header);
Serial.println("Log in Successful");
return;
}
msg = "Wrong username/password! try again.";
Serial.println("Log in Failed");
}
String content = "<html><body><form action='/login' method='POST'>To log in, please use : admin/admin
";
content += "User:<input type='text' name='USERNAME' placeholder='user name'>
";
content += "Password:<input type='password' name='PASSWORD' placeholder='password'>
";
content += "<input type='submit' name='SUBMIT' value='Submit'></form>" + msg + "
";
server.send(200, "text/html", content);
}
//root page can be accessed only if authentification is ok
void handleRoot(){
Serial.println("Enter handleRoot");
String header;
if (!is_authentified()){
String header = "HTTP/1.1 301 OK\r\nLocation: /login\r\nCache-Control: no-cache\r\n\r\n";
server.sendContent(header);
return;
}
sendMain();
}
void sendMain() {
String content = "<html><body><H2>hello, you successfully connected to esp8266!</H2>
";
if (server.hasHeader("User-Agent")){
content += "the user agent used is : " + server.header("User-Agent") + "
";
if (output1_state)
{
content += "Output1: <a href=\"output1\"><button>ON</button></a>
";
}
else
{
content += "Output1: <a href=\"output1\"><button>OFF</button></a>
";
}
if (output2_state)
{
content += "Output2: <a href=\"output2\"><button>ON</button></a>
";
}
else
{
content += "Output2: <a href=\"output2\"><button>OFF</button></a>
";
}
}
content += "You can access this page until you <a href=\"/login?DISCONNECT=YES\">disconnect</a></body></html>";
server.send(200, "text/html", content);
}
void setup(void){
// configure GPIO 0 and GPIO 2 as outputs:
pinMode(output1, OUTPUT);
pinMode(output2, OUTPUT);
// set outputs to low:
digitalWrite(output1, LOW);
digitalWrite(output2, LOW);
Serial.begin(115200);
WiFi.begin(ssid, password);
Serial.println("");
// Wait for connection
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.print("Connected to ");
Serial.println(ssid);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
if (MDNS.begin(host))
{
Serial.println("mDNS responder started");
}
MDNS.addService("http", "tcp", 80);
//here the list of headers to be recorded
const char * headerkeys[] = {"User-Agent","Cookie"} ;
size_t headerkeyssize = sizeof(headerkeys)/sizeof(char*);
//ask server to track these headers
server.collectHeaders(headerkeys, headerkeyssize );
server.begin();
Serial.println("HTTP server started");
server.on("/", handleRoot);
server.on("/login", handleLogin);
server.on("/output1", [](){
if (output1_state)
{
Serial.println("LED1 aus");
Serial.println(output1_state);
digitalWrite(output1, LOW);
output1_state = false;
}
else
{
Serial.println("LED1 an");
digitalWrite(output1, HIGH);
Serial.println(output1_state);
output1_state = true;
}
//server.send(200, "text/html", content());
sendMain();
delay(1000);
});
}
void loop(void){
server.handleClient();
}
P.S. Ich find's übersichtlicher, auch die Funktion für output1 ( und weitere ) als getrennte Funktionen zu definieren - z.B. handleOutput1() - , und in server.on den Funktionsnamen zu übergeben.
P.P.S Da er sich merkt, ob er angemeldet ist, könntest Du da doch anstelle des server.send auch einfach wieder handleRoot() aufrufen.