'''factotum for py''' import subprocess class FactotumError(Exception):	pass class PhaseError(Exception):	pass class NeedkeyError(Exception):	pass class Factotum:	def start(self, **args):		self.f = open('/mnt/factotum/rpc', 'r+', 0)		msg = 'start'		for k, v in args.iteritems():			msg += ' ' + k + '=\'' + v + '\''		while True:			self.f.write(msg)			ret = self.f.read(4096)			if ret[:7] != "needkey": break			self.needkey(ret[8:])		if ret == "ok": return		if ret[:5] == "error": raise FactotumError(ret[6:])		raise FactotumError("start: unexpected " + ret)	def needkey(self, string):		subprocess.call(['/bin/auth/factotum', '-g', string])	def read(self):		while True:			self.f.write('read')			ret = self.f.read(4096)			if ret[:7] != "needkey": break			self.needkey(ret[8:])		if ret == "ok": return ""		if ret[:3] == "ok ": return ret[3:]		if ret[:5] == "error": raise FactotumError(ret[6:])		if ret[:5] == "phase": raise PhaseError(ret[6:])		raise FactotumError("read: unexpected " + ret)	def write(self, data):		while True:			self.f.write('write ' + data)			ret = self.f.read(4096)			if ret[:7] != "needkey": break			self.needkey(ret[8:])		if ret == "ok": return 0		if ret[:3] == "toosmall ": return int(ret[4:])		if ret[:5] == "error": raise FactotumError(ret[6:])		if ret[:5] == "phase": raise PhaseError(ret[6:])		raise FactotumError("write: unexpected " + ret)	def attr(self):		self.f.write('attr')		ret = self.f.read(4096)		if ret[:5] == "error": raise FactotumError(ret[6:])		if ret[:3] == "ok ":			dict = {}			ret = ret[3:]			mode = 0			key = ""			value = ""			while ret != "":				if mode == 0:					if ret[0] == '=':						if ret[1] == '\'':							mode = 2							ret = ret[1:]						else:							mode = 1					else:						key += ret[0]				elif mode == 1:					if ret[0] == ' ':						dict[key] = value						key = ""						value = ""						mode = 0					else:						value += ret[0]				elif mode == 2:					if ret[0] == '\'':						ret = ret[1:]						dict[key] = value						key = ""						value = ""						mode = 0					else:						value += ret[0]				if ret != "": ret = ret[1:]			if key != "":				dict[key] = value			return dict		raise FactotumError("unexpected " + ret)	def close(self):		self.f.close()	def delkey(self, **args):		f = open('/mnt/factotum/ctl', 'w', 0)		msg = 'delkey'		for k, v in args.iteritems():			msg += ' ' + k + '=\'' + v + '\''		f.write(msg)		f.close()