import sys
import subprocess
import socket
+import pwd
+import grp
tuerSock = "/run/tuer.sock"
pass
import atexit
atexit.register(readline.write_history_file, histfile)
-atexit.register(print, "Bye")
# available commands
def helpcmd(c):
def sendcmd(addr, cmd):
def run(c):
- print("Running %s..." % (cmd))
+ print("206 Sending command %s..." % (cmd))
s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
s.connect(addr)
+ s.settimeout(60.0)
s.send(cmd.encode())
- data = s.recv(4)
+ data = s.recv(256)
s.close()
- print("...done")
- if data != b'1':
- print("Received unexpected answer %s" % str(data))
+ print(data.decode('utf-8'))
return run
def exitcmd(c):
- sys.exit(0)
+ print("Bye")
+ return True
+
+def whocmd(c):
+ for n in grp.getgrnam("tuer").gr_mem:
+ p = pwd.getpwnam(n)
+ print (p.pw_name, " - ", p.pw_gecos)
commands = {
'exit': exitcmd,
'help': helpcmd,
- 'open': sendcmd(tuerSock, 'open'),
- 'close': sendcmd(tuerSock, 'close'),
+ 'open': sendcmd(tuerSock, 'unlock'),
+ 'unlock': sendcmd(tuerSock, 'unlock'),
'buzz': sendcmd(tuerSock, 'buzz'),
+ 'who': whocmd,
}
+def complete_command(cmd):
+ '''returns a list of commands (as strings) starting with cmd'''
+ return list(filter(lambda x: x.startswith(cmd), commands.keys()))
+readline.set_completer(lambda cmd, num: (complete_command(cmd)+[None])[num]) # wrap complete_command for readline's weird completer API
+readline.parse_and_bind("tab: complete") # run completion on tab
+
# input loop
print("Welcome to tyshell. Use help to see what you can do.")
while True:
break
command = shlex.split(command)
if not len(command): continue
- # execute command
- if command[0] in commands:
+ # find suiting commands
+ if command[0] in commands: # needed in case a complete command is a prefix of another one
+ cmdoptions = [command[0]]
+ else:
+ cmdoptions = complete_command(command[0])
+ # check how many we found
+ if len(cmdoptions) == 0: # no commands fit prefix
+ print("Command %s not found. Use help." % command[0])
+ elif len(cmdoptions) == 1: # exactly one command fits (prefix)
try:
- commands[command[0]](command)
+ res = commands[cmdoptions[0]](command)
+ if res: break
except Exception as e:
print("Error while executing %s: %s" % (command[0], str(e)))
- else:
- print("Command %s not found. Use help." % command[0])
+ else: # multiple commands fit the prefix
+ print("Ambiguous command prefix, please choose one of the following:")
+ print("\t", " ".join(cmdoptions))
+ # TODO: put current "command[0]" into the shell for the next command, but such that it is deletable with backspace