Feeding input to an interactive command line application

you need to create an usual text file like

connect myvpnhost
myloginname
mypassword

save it as myfile.dat (for example) and then call

"%ProgramFiles%\Cisco\Cisco AnyConnect Secure Mobility Client\vpncli.exe" -s < myfile.dat

There are at least two ways to read input in a Windows console application.

• ReadConsole: reads input either from keyboard or redirection (documentation).
• ReadConsoleInput: reads only raw keystrokes (documentation).

The vpncli.exe application uses ReadConsoleInput in order to read the password, that's way redirecting the password does not work. You can, though, use WriteConsoleInput. I have a small Python script that does exactly that:

import subprocessimport win32consoleANYCONNECT_BIN = 'c:\\Program Files\\Cisco\\Cisco AnyConnect Secure Mobility Client\\vpncli.exe'def write_console_input(text):  stdin = win32console.GetStdHandle(win32console.STD_INPUT_HANDLE)  ir = win32console.PyINPUT_RECORDType(win32console.KEY_EVENT)  ir.KeyDown = True  for ch in text:    ir.Char = unicode(ch)    stdin.WriteConsoleInput([ir])def main():  proc = subprocess.Popen([ANYCONNECT_BIN,'connect','VPN'],stdin=subprocess.PIPE)  proc.stdin.write('%s\n%s\n' % ('GROUP', 'USERNAME'))  write_console_input('%s\n' % 'PASSWORD')  ret = proc.wait()  print retif __name__ == '__main__':  main()