X-Git-Url: https://git.ralfj.de/saartuer.git/blobdiff_plain/97df5941b08cd53aa66937ded412fa58aac531aa..f1430a05b39770f59427e33ba17e51a77bc59427:/tyshell diff --git a/tyshell b/tyshell index c9a0927..37873bc 100755 --- a/tyshell +++ b/tyshell @@ -6,6 +6,9 @@ import sys import subprocess import socket import pwd +import grp +import traceback +from collections import namedtuple tuerSock = "/run/tuer.sock" @@ -20,7 +23,11 @@ atexit.register(readline.write_history_file, histfile) # available commands def helpcmd(c): - print("Available commands: %s" % ", ".join(sorted(commands.keys()))) + if (len(c) > 1): + print(commands.get(c[1],(None,'Can\'t find help for command %s'%(c[1]))).helpstring) + else: + print("Available commands: %s" % ", ".join(sorted(commands.keys()))) + print("Use 'help command' to get more information on the command 'command'") def extcmd(cmd): def run(c): @@ -31,12 +38,12 @@ def extcmd(cmd): 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(10.0) + s.settimeout(60.0) s.send(cmd.encode()) - data = s.recv(4) + data = s.recv(256) s.close() print(data.decode('utf-8')) return run @@ -46,17 +53,27 @@ def exitcmd(c): return True def whocmd(c): - for p in filter(lambda x:x.pw_shell=="/opt/tuer/tyshell",pwd.getpwall()): + 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, 'unlock'), - 'unlock': sendcmd(tuerSock, 'unlock'), - 'buzz': sendcmd(tuerSock, 'buzz'), - 'who': whocmd, -} +def alias (cmds, aliases): + for newname, oldname in aliases.items(): + cmds[newname] = cmds[oldname] + return cmds + +CmdEntry = namedtuple('CmdEntry','function helpstring') + +commands = alias({ + 'exit': CmdEntry(exitcmd, 'Quits this shell'), + 'help': CmdEntry(helpcmd, 'Helps you getting to know the available commands'), + 'unlock': CmdEntry(sendcmd(tuerSock, 'unlock'), 'Will try to unlock the apartment door'), + 'buzz': CmdEntry(sendcmd(tuerSock, 'buzz'), 'Will buzz the buzzer for the street door'), + 'who': CmdEntry(whocmd, 'Shows the list of people, who are allowed to control this system'), +},{ + # aliases + 'open': 'unlock', +}) def complete_command(cmd): '''returns a list of commands (as strings) starting with cmd''' @@ -84,10 +101,11 @@ while True: print("Command %s not found. Use help." % command[0]) elif len(cmdoptions) == 1: # exactly one command fits (prefix) try: - res = commands[cmdoptions[0]](command) + res = commands[cmdoptions[0]].function(command) if res: break except Exception as e: print("Error while executing %s: %s" % (command[0], str(e))) + #print(traceback.format_exc()) else: # multiple commands fit the prefix print("Ambiguous command prefix, please choose one of the following:") print("\t", " ".join(cmdoptions))