esp8266, Arduino IDE: neuer Versuch: warum wird website sofort beendet?

**Moppi** · 22.10.2019, 14:32

weiter oben lesen: https://www.roboternetz.de/community...l=1#post655595

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@hawe
habe Deinen ersten Quelltext, nach den neuen Erkenntnissen, nochmals modifiziert:

Code:

bool authorized=false;


void handleNotAuthorized() {
  String readString = "";
  char   strinput[MAXLEN], strupwd[TOKLEN], struname[TOKLEN] ;
  
  WiFiClient client = wifiserver.available();


  //---------------------------------------
  // debug
  // authorized=true;


  strcpy(strinput, "");
  strcpy(strupwd, "");
  strcpy(struname, "");


  while ( client.connected() ) {
    if (authorized) return;


    if ( client.available() ) {
      char c = client.read();


      //read char by request
      readString = "";
      while ( (readString.length() < TOKLEN) && (c != '\n') ) {
          readString += c;
          c = client.read();
      }


      readString.toCharArray(strinput, MAXLEN);
     // cstringarg(strinput, "uname", struname); // uname
     // cstringarg(strinput, "upwd", strupwd);  // upwd
 
      if(strstr(website_upwd,strupwd)!=NULL & strstr(website_uname,struname)!=NULL)
      {
        authorized = true;
        readString = "";
        return;           
        // return;  // <<< selbes Ergebnis, egal ob kommentiert oder auskommentiert
      }    
      
      //if HTTP request has ended
      if (c == '\n') {
         client.flush();


        //now output html data header


        String script="";
        script += ("<!DOCTYPE html> \n");
        script += ("<html> \n");
        
        script += ("<head> \n");


        // utf-8 für "°" Zeichen
        script +=  "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"> \n" ;
        script +=  "<title>" ;        
        script +=  "</title> \n" ;
        script +=  "</head> \n" ;
        script +=  "<body> \n" ;
        
        script += ("<h2><p style=\"color:rgb(255,0,191);\"> log in to proceed: </p> </h2> \n");


        script += ("<FORM ACTION='/' method=GET > \n");
        script += ("<h2>user name:  <INPUT TYPE=text NAME='uname' VALUE=''  MAXLENGTH='50'> </h2> \n");
        script += ("<h2>password :  <INPUT TYPE=PASSWORD NAME='upwd' VALUE='' MAXLENGTH='50'> </h2> \n");


        script += ("<h2><INPUT TYPE=SUBMIT></h2> \n");


        script += ("</FORM> \n");
        script += ("<BR> \n");
        script += ("</body> \n");
        script += ("</html> \n");


        //----------------------------------


        String script1 = "";
        script1 += ("HTTP/1.1 200 OK \n");
        script1 += ("Content-Type: text/html \n");
        script1 += ("Content-Length: ") + script.length() + ("\n");
        script1 += ("\n");  //  do not forget this one //????


        script = script1+script;


        client.print(script);
        delay(100);


        //stopping client
        client.stop();
        //clearing string for next read
        //readString = "";
      }
    }
    delay(1);
  }
}

HaWe · 22.10.2019, 15:46

äh, sorry, vor
// close the connection:
client.stop();

der "echte" ungekürzte Code ist dieser hier:

Code:


void handleNotAuthorized() {
  String readString = "";
  char   strinput[MAXLEN], strupwd[TOKLEN], struname[TOKLEN] ;
  
  WiFiClient client = wifiserver.available();

  strcpy(strinput, "");
  strcpy(strupwd, "");
  strcpy(struname, "");


  while ( client.connected() ) {
    if (authorized) return;


    if ( client.available() ) {
      char c = client.read();


      //read char by request
      readString = "";
      while ( (readString.length() < TOKLEN) && (c != '\n') ) {
          readString += c;
          c = client.read();
      }
 
      if(strstr(website_upwd,strupwd)!=NULL & strstr(website_uname,struname)!=NULL)
      
      readString.toCharArray(strinput, MAXLEN);
      // cstringarg( char* haystack, char* vname, char* sarg )
      // haystack pattern: &varname=1234abc,  delimiters &, \n, \0, SPACE, EOF
      cstringarg(strinput, "uname", struname);  // uname
      cstringarg(strinput, "upwd", strupwd);   // upwd
      
      // debug
      Serial.print("strupwd     >>>"); Serial.print(strupwd); Serial.println("<<<");
      Serial.print("website_upwd>>>"); Serial.print(website_upwd); Serial.println("<<<");
      Serial.print("readString>>>");Serial.println(readString);

      if ( (strlen(strupwd)==strlen(website_upwd)) && (strcmp(website_upwd, strupwd)==0)
          && (strlen(struname)==strlen(website_uname)) && (strcmp(website_uname, struname)==0) 
         )         
      {
        authorized = true;
        readString = "";
        return;           
      }    
      
      //if HTTP request has ended
      if (c == '\n') {
         client.flush();

        //now output html data header
        String script="";
        script += ("<!DOCTYPE html> \n");
        script += ("<html> \n");
        
        script += ("<head> \n");

        // utf-8 für "°" Zeichen
        script +=  "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"> \n" ;
        script +=  "<title>" ;        
        script +=  "</title> \n" ;
        script +=  "</head> \n" ;
        script +=  "<body> \n" ;
        
        script += ("<h2><p style=\"color:rgb(255,0,191);\"> log in to proceed: </p> </h2> \n");

        script += ("<FORM ACTION='/' method=GET > \n");
        script += ("<h2>user name:  <INPUT TYPE=text NAME='uname' VALUE=''  MAXLENGTH='50'> </h2> \n");
        script += ("<h2>password :  <INPUT TYPE=PASSWORD NAME='upwd' VALUE='' MAXLENGTH='50'> </h2> \n");

        script += ("<h2><INPUT TYPE=SUBMIT></h2> \n");

        script += ("</FORM> \n");
        script += ("<BR> \n");
        script += ("</body> \n");
        script += ("</html> \n");

        //----------------------------------

        String script1 = "";
        script1 += "HTTP/1.1 200 OK \n";
        script1 += "Content-Type: text/html \n";
        script1 += "Content-Length: " + (String)script.length() + "\n";
        script1 += "\n";  //  do not forget this one //????
  
        script = script1+script;

        client.print(script);
        delay(100);

        //stopping client        
        /*
        while(client.connected()) { 
          delay(10);    
        }   
        */      
        client.stop();
      }
    }
    delay(1);
  }
}

**Moppi** · 22.10.2019, 16:17

Warum so: (String)script.length()

bei mir funktionierte das auch ohne das "(String)"

???

PS: gib mal: "(String)" bei google ein, mit Gänsefüßchen oder ohne!

HaWe · 22.10.2019, 16:27

bei mir ging es zunächst nicht, aber es stört jetzt auch nicht weiter

**Moppi** · 22.10.2019, 16:32

Soll das (String) extra in String konvertieren?

HaWe · 22.10.2019, 16:35

ja, genau, habe es noch mal getestet und dann kommt ohne (String):

ESP8266_ServerHomeWebMail_078:1273:59: error: invalid operands of types 'const char*' and 'const char [2]' to binary 'operator+'

script1 += "Content-Length: " + script.length() + "\n";

was ja eigentlich verständlich ist, denn lenghth() ist ja eine Zahl, die man nicht an cstrings addieren kann.

**Moppi** · 22.10.2019, 16:43

Ok. Gut! Danke! Hatte so etwas ähnliches im Hinterkopf. Nur es gibt Funktionen, wo man es nicht extra konvertieren muss. Hätte auch mit String(script.length(), DEZ) oder schlicht mit String(script.length()) funktioniert?

Jetzt können wir jedenfalls 2.5.2 weiter verwenden.