Help with Telnet Login

Comments

• vining Posts: 4,368

  June 2011

  There could be some reall goofy telnet crap during the intial telnet handshake:
  http://www.amxforums.com/showthread.php?6856-TELNET-commands&highlight=telnet+commands
  
  What are you trying to talk to?
  
  Most things like Lutron which also uses port 23 is pretty much a straight forward back and forth procedure. Catch what it sends when you open the client connection and respond accordingly based on the devices api. But if that's what you're doing, first verify the login response the device expects is formatted the way the api specifies.
  
  Post what the device is and maybe someone will have working code they'd like to share or at least a word of advice. If you have the api post that too, especially if it's an oddball device.

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• TurnipTruck Posts: 1,485

  June 2011

  It is a Lutron device. As soon as I see the 'login: ' I am sending the login name.

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• vining Posts: 4,368

  June 2011

  Here's the pertinent section of my code:

  	 }
  		    ACTIVE(find_string(cHWI_Str,"'closing connection...LOGIN:'",1) == 1):
  			 {
  			 fnHWI_Q_QCmd("HWI_USER_NAME,',',HWI_PASSWORD") ;
  			 fnHWI_DeBug("'RCVD- "',cHWI_Str,'", & SENT USER-:',HWI_USER_NAME,' & SENT PASS-: ',HWI_PASSWORD,' :DEBUG<',ITOA(__LINE__),'>'") ;
  			 REMOVE_STRING(cHWI_Str,"': '",1) ;
  			 }
  		    ACTIVE(find_string(cHWI_Str,"'LOGIN: '",1) == 1 || find_string(cHWI_Str,"'login: '",1) == 1):
  			 {
  			 fnHWI_Q_QCmd("HWI_USER_NAME,',',HWI_PASSWORD") ;
  			 fnHWI_DeBug("'RCVD- "',cHWI_Str,'", & SENT USER-:',HWI_USER_NAME,' & SENT PASS-: ',HWI_PASSWORD,' :DEBUG<',ITOA(__LINE__),'>'") ;
  			 REMOVE_STRING(cHWI_Str,"': '",1) ;
  			 }
  		    ACTIVE(find_string(cHWI_Str,"'LOGIN: '",1) || find_string(cHWI_Str,"'login: '",1)): //catch any login rx anywhwere and respond
  			 {
  			 fnHWI_Q_QCmd("HWI_USER_NAME,',',HWI_PASSWORD") ;
  			 fnHWI_DeBug("'RCVD- "',cHWI_Str,'", & SENT USER-:',HWI_USER_NAME,' & SENT PASS-: ',HWI_PASSWORD,' :DEBUG<',ITOA(__LINE__),'>'") ;
  			 REMOVE_STRING(cHWI_Str,"': '",1) ;
  			 }
  		    ACTIVE(find_string(cHWI_Str,"'login incorrect'",1)):
  			 {
  

  Note I duplicated the ACTIVE since it should always appear at the beginning of the string being parsed but just in case it isn't the second will catch it. So why not just remove the first active you say, well cusz that's the one that's supposed to work and I'm stubborn.
  
  edit:
  
  Just in case you're working with RA2 or HomeWorks QS you can try this code:
  

   else if(find_string(cRA2_Str,'login: ',1) || find_string(cRA2_Str,'password: ',1))
  	  {
  	  SELECT
  	       {
  	       ACTIVE(find_string(cRA2_Str,"'login: '",1)): //catch any login rx anywhwere and respond
  		    {
  		    fnRA2_Clear_ToSend() ;
  		    fnRA2_Q_QCmd("RA2_USER_NAME") ;
  		    fnRA2_DeBug("'RX: "',cRA2_Str,'", & SENT USER-: ',RA2_USER_NAME,' :DEBUG<',ITOA(__LINE__),'>'") ;
  		    REMOVE_STRING(cRA2_Str,"': '",1) ;
  		    }
  	       ACTIVE(find_string(cRA2_Str,"'password: '",1)):
  		    {
  		    fnRA2_Clear_ToSend() ;
  		    fnRA2_Q_QCmd("RA2_PASSWORD") ;
  		    fnRA2_DeBug("'RX: "',cRA2_Str,'", & SENT PASS-: ',RA2_PASSWORD,' :DEBUG<',ITOA(__LINE__),'>'") ;
  		    REMOVE_STRING(cRA2_Str,"': '",1) ;
  		    }
  		ACTIVE(1)://PRINT ANYTHING RCV'D WE AREN'T LOOKING FOR
  		    {
  		    fnRA2_Clear_ToSend() ;
  		    fnRA2_DeBug("'RX:(Not Logged in) UNKOWN STRING: "',cRA2_Str,'" :DEBUG<',ITOA(__LINE__),'>'") ;
  		    cRA2_Str = '' ;
  		    }
  	       }
  

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• Joe Hebert Posts: 2,159

  June 2011

  CRLF
  

  TurnipTruck wrote: »

  It is a Lutron device. As soon as I see the 'login: ' I am sending the login name.

  
  After I get the login prompt I send the username a comma the password and a carriage return line feed:
  

  SEND_STRING dvLutron,"cUser,',',cPassword,CRLF"
  

  TurnipTruck wrote: »

  <code>
  SEND_STRING dv,"login,$0D"
  </code>
  Login is a char array containing the login name. After the string is sent, I do not get any response from the device. It just keeps sending the login prompt every minute or so. Using a Windows Telnet connection it works as expected, asking me for a password.

  Windows is probably sending a carriage return line feed and you are just sending a carriage return.
  Also you can send the user name and password with one string if you want.

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• vining Posts: 4,368

  June 2011

  I think the earlier versions of HomeWorks required just the "13", maybe interactive? Or maybe it was serial comms required "13" while IP comms required "13,10". I don't remember exactly when or what but there was a shift at some point. Both the current illuminations, RA2 and QS use the "13,10" as Joe indicated but RA2 & QS have seperate responses for user and password and a completely different command/response architecture.

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• TurnipTruck Posts: 1,485

  June 2011

  Thanks guys! Will have another look at it soon.

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