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#!/usr/bin/env python
# -*- coding: utf-8 -*-
import json
import os
import subprocess
import sys
import time
def main():
if (len(sys.argv) != 2):
sys.exit('Invalid parameter. Usage: {0} <mapping>\n'.format(
sys.argv[0]))
cstm_error = ''
try:
cstm_error = 'Could not open config (~/.cmount.json)'
with open(os.path.expanduser('~/.cmount.json')) as fp:
config_dict = json.load(fp)
cstm_error = 'Invalid / nonexistent mapping: {0}'.format(sys.argv[1])
data = config_dict[sys.argv[1]]
if data.get('type') == 'lvm':
if not isinstance(data.get('pv_sources'), dict):
cstm_error = 'Invalid config for lvm-type'
raise Exception()
cstm_error = 'pv_sources error'
for device, mapper_name in data['pv_sources'].items():
subprocess.check_call(['/sbin/cryptsetup',
'luksOpen',
device,
mapper_name])
time.sleep(3)
cstm_error = 'vgimport error'
subprocess.check_call(['/sbin/vgimport',
data['device'].split('/')[2]])
cstm_error = 'lvchange error'
subprocess.check_call(['/sbin/lvchange',
'-a',
'y',
data['device']])
cstm_error = 'mount error'
arguments = ['/bin/mount', data['device']]
if data.get('target'):
arguments.append(data['target'])
subprocess.check_call(arguments)
else:
if data.get('type') == 'efile':
cstm_error = 'Unable to create loop device'
data['device'] = subprocess.check_output(
['/usr/sbin/losetup',
'--find',
'--show',
data['device']]).strip()
cstm_error = 'system() error'
subprocess.check_call(['/sbin/cryptsetup',
'luksOpen',
data['device'],
data['mapper_name']])
arguments = ['/bin/mount', '/dev/mapper/' + data['mapper_name']]
if data.get('target'):
arguments.append(data['target'])
subprocess.check_call(arguments)
except subprocess.CalledProcessError as e:
print('Execution error: {0}\n'.format(e), file=sys.stderr, flush=True)
except Exception:
print('Error: {0}\n'.format(cstm_error), file=sys.stderr, flush=True)
if __name__ == '__main__':
main()
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