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Full Discussion: Expect scripting telnet stop on bad username or password
Top Forums Shell Programming and Scripting Expect scripting telnet stop on bad username or password Post 302713445 by leemalloy on Wednesday 10th of October 2012 05:08:52 PM
Old 10-10-2012
Expect scripting telnet stop on bad username or password
I am trying to build and expect script to log into multiple aix boxes and change password. I need for the script to terminate if it cannot log into a server because the username or password is wrong.
Code:
#!/usr/bin/expect
set timeout 1
set host [lindex $argv 0]
set user [lindex $argv 1]
set password [lindex $argv 2]
set uh "Unknown host"
set ivl "\[compat\]\: You entered an invalid login name or password"
set lg "login"
set pwd "Password:"
set prp "$host"
proc login {user password} {
expect "Login:"
send "$user\r"
expect "Password:"
send "$password\r"
}
spawn telnet $host
expect {
$uh {
send_user "Unknown Host\n"
}
$lg {
send $user\r ; exp_continue
}
$pwd {
send $password\r
expect {
"#" {send hostname\r}
"$" {send hostname\r}
">" {send hostname\r}
$ivl { send_error "Invalid Username or Password\n" }
}
}
}
expect closed
exit 0

Last edited by Franklin52; 10-11-2012 at 05:25 AM.. Reason: Please use code tags for data and code samples
 

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LEARN ABOUT CENTOS

libssh2_userauth_password_ex

libssh2_userauth_password_ex(3) 				  libssh2 manual				   libssh2_userauth_password_ex(3)

NAME

       libssh2_userauth_password_ex - authenticate a session with username and password

SYNOPSIS

       #include <libssh2.h>
       int libssh2_userauth_password_ex(LIBSSH2_SESSION *session,
			   const char *username,
			   unsigned int username_len,
			   const char *password,
			   unsigned int password_len,
			   LIBSSH2_PASSWD_CHANGEREQ_FUNC((*passwd_change_cb)));

       #define libssh2_userauth_password(session, username, password) 
	libssh2_userauth_password_ex((session), (username), 
				     strlen(username), 
				     (password), strlen(password), NULL)

DESCRIPTION

       session - Session instance as returned by libssh2_session_init_ex(3)

       username - Name of user to attempt plain password authentication for.

       username_len - Length of username parameter.

       password - Password to use for authenticating username.

       password_len - Length of password parameter.

       passwd_change_cb - If the host accepts authentication but requests that the password be changed, this callback will be issued.  If no call-
       back is defined, but server required password change, authentication will fail.

       Attempt basic password authentication. Note that many SSH servers which appear to support ordinary password authentication actually have it
       disabled and use Keyboard Interactive authentication (routed via PAM or another authentication backed) instead.

RETURN VALUE

       Return 0 on success or negative on failure.  It returns LIBSSH2_ERROR_EAGAIN when it would otherwise block. While LIBSSH2_ERROR_EAGAIN is a
       negative number, it isn't really a failure per se.

ERRORS

       Some of the errors this function may return include:

       LIBSSH2_ERROR_ALLOC -  An internal memory allocation call failed.

       LIBSSH2_ERROR_SOCKET_SEND - Unable to send data on socket.

       LIBSSH2_ERROR_PASSWORD_EXPIRED -

       IBSSH2_ERROR_AUTHENTICATION_FAILED - failed, invalid username/password or public/private key.

SEE ALSO

       libssh2_session_init_ex(3)

libssh2 0.15							    1 Jun 2007					   libssh2_userauth_password_ex(3)
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