eight02645999 at yahoo.com writes:
>hi
>i am using a telnet session to simulate an authentication mechanism
>USER = "user"
>PASSWORD = "password"
>try:
> telnet = telnetlib.Telnet(HOST)
> telnet.set_debuglevel(5)
> telnet.read_until("login: ")
> telnet.write(USER + "\n")
> telnet.read_until("Password: ")
> telnet.write(PASSWORD + "\n")
>except:
> print "failed to telnet"
>else:
> try:
> telnet.write("ls\n")
> except:
> print "cannot ls"
> else:
> telnet.write("exit\n")
> print telnet.read_all()
>When i purposely input a wrong password, it "hangs" at the login prompt
>waiting for
>login and Password. The host i am telnetting to is a unix server.
>How can i "exit" this login prompt if the user keys in wrong password
>in my script?
Either do an explicit read_until() for the prompt and fail if it times out or
use expect() to see whether you saw "Password:" or prompt. If you absolutely
don't know what the prompt might be I suppose you could do another
read_until("Password:") and if it times out then assume you got through.