User.py

#!/usr/bin/python

import subprocess
def _ncheck_output(cmds):
	if type(cmds   )!=type([]): cmds = [cmds.split()]
	if type(cmds[0])!=type([]): cmds = [cmds]
	ncmds = len(cmds)
	ps = ncmds*[None]
	for i,cmd in enumerate(cmds):
		if i==0:
			ps[i] = subprocess.Popen(cmds[i],                       stdout=subprocess.PIPE, shell=False)
		else:
			ps[i] = subprocess.Popen(cmds[i], stdin=ps[i-1].stdout, stdout=subprocess.PIPE, shell=False)
	for i in range(ncmds-1):
		ps[i].stdout.close()
	return ps[-1].communicate()[0]

class User:
	def __init__(self):
		self.data = {}
		self.is_loaded = False
	def get_user(self,uid):
		if not self.data:
			self.load_data()
		return self.data.get(int(uid),"N/A-" + str(uid))
	def load_data(self):
		for line in _ncheck_output('ssh head1 getent passwd').split("\n"):
			sline = line.strip()
			if not sline or sline[0]=='#': continue
			fields = sline.split(":")
			self.data[int(fields[2])] = fields[0]
		self.is_loaded = True