X-Git-Url: https://git.ralfj.de/saartuer.git/blobdiff_plain/3313462175e847d3c0c5075e1ecc589f1d264ca7..98411bd460ad1474b8c3100bf8241c04519b7a2d:/tyshell?ds=inline

diff --git a/tyshell b/tyshell
index f8627d2..70ad6df 100755
--- a/tyshell
+++ b/tyshell
@@ -7,6 +7,8 @@ import subprocess
 import socket
 import pwd
 import grp
+import traceback
+from collections import namedtuple
 
 tuerSock = "/run/tuer.sock"
 
@@ -21,7 +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):
@@ -37,9 +43,11 @@ def sendcmd(addr, cmd):
 		s.connect(addr)
 		s.settimeout(60.0)
 		s.send(cmd.encode())
-		data = s.recv(256)
+		while True:
+			data = s.recv(256)
+			if not len(data): break
+			print(data.decode('utf-8'))
 		s.close()
-		print(data.decode('utf-8'))
 	return run
 
 def exitcmd(c):
@@ -51,14 +59,37 @@ def whocmd(c):
 		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
+
+def prompt_sure(f,msg):
+	def run(c):
+		try:
+			command = input("%s Are you sure? (yes/no) > " % msg)
+		except EOFError:
+			print()
+			return
+		if command[0] == 'y':
+			return f(c)
+	return run
+
+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'),
+	'lock': CmdEntry(sendcmd(tuerSock, 'lock'), 'If in fallback mode, try to lock the apartment door. If not in fallback mode, you must use the switch near the 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'),
+	'fallback_mode_on': CmdEntry(prompt_sure(sendcmd(tuerSock, 'fallback_mode_on'),'WARNING: This action will be reported to the admins. Use this only in case of Sphinx hardware failure when you need to ignore erroneous sensor input!'), 'Sets the system in a state where it is less dependent on sensoric input. Use it only when sensors are broken.'),
+	'fallback_mode_off': CmdEntry(prompt_sure(sendcmd(tuerSock, 'fallback_mode_off'),'WARNING: This action will be reported to the admins. Use this only if you have fixed the sensors of the Sphinx or activated fallback mode by accident!'), 'Resets the system to the default state. Use this when you have just repaired the sensors of the Sphinx.'),
+},{
+	# aliases
+	'open': 'unlock',
+})
 
 def complete_command(cmd):
 	'''returns a list of commands (as strings) starting with cmd'''
@@ -86,10 +117,11 @@ 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))