#!/usr/bin/env python

import sys
import os
import getopt
import hesiod

usage = """Usage: attach [options] filesystem ... [options] filesystem ...
       attach -l filesystem
       attach -H host
       attach
"""

if len(sys.argv) > 1 and sys.argv[1] == '-Padd':
	os.execv('/usr/local/bin/attach-add.py', sys.argv[2:])

try:
	optlist, args = getopt.getopt(sys.argv[1:], 'vqplvngazhrwm:Mxet:o:NSOLH', ['verbose', 'quiet', 'printpath', 'lookup', 'map', 'nomap', 'remap', 'noremap', 'zephyr', 'nozephyr', 'readonly', 'write', 'mountpoint=', 'master', 'noexplicit', 'explicit', 'type', 'mountoptions', 'nosetuid', 'nosuid', 'setuid', 'suid', 'override', 'lock', 'host=']);
except getopt.GetoptError:
	sys.stderr.write(usage)
	sys.exit(1)

print_usage = False
noise_level = 'verbose'
for o, a in optlist:
	if o == '-l' or o == '--lookup':
		noise_level = 'lookup'
	if o == '-v' or o == '--verbose':
		noise_level = 'verbose'
	if o == '-q' or o == '--quiet':
		noise_level = 'quiet'
	if o == '-p' or o == '--printpath':
		noise_level = 'path'
	if o == '-m' or o == '--mountpoint':
		if a[0:5] == '/mit/':
			sys.stderr.write('Sorry. The MacAthena attach program does not support alternate mount points within /mit\n')
			sys.exit(1)
		elif len(args) != 1:
			print_usage = True
		else:
			filsys = hesiod.FilsysLookup(args[0])
			if filsys:
				os.symlink(filsys.getFilsys()[0]['location'], a)
				sys.exit(0)
			else:
				sys.stderr.write('%s: Locker unknown' % args[0])
				sys.exit(2)
	if o == '-H' or o == '--host':
		sys.stderr.write('Sorry. The MacAthena attach program does not keep an attachtab\n')
		sys.exit(1)

exit_code = 0

for arg in args:
	try:
		os.stat('/mit/%s' % arg)
		os.system('/usr/bin/aklog /mit/%s' % arg)
	except OSError:
		sys.stderr.write('%s: Locker unknown\n' % arg)
		exit_code = 2
	if noise_level == 'verbose':
		filsys = hesiod.FilsysLookup(args[0])
		print 'attach: %s attached to /mit/%s for filesystem %s' % (filsys.getFilsys()[0]['location'], arg, arg)
	elif noise_level == 'path':
		print '/mit/%s' % arg
	elif noise_level == 'lookup':
		print '%s resolves to:' % arg
		os.system('hesinfo %s filsys' % arg)

sys.exit(exit_code)