ansible-role-luks/library/luks_manage.py

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2019-03-16 22:51:50 +00:00
#!/usr/bin/python
from ansible.module_utils.basic import *
import subprocess
class LuksManage:
def __init__(self, device):
self.device = device
def is_luks(self):
if subprocess.call(['cryptsetup', 'isLuks', self.device]) == 0:
return True
else:
return False
def create(self, cipher, size, key):
p = subprocess.Popen(
[
'cryptsetup', '-q', 'luksFormat', '-c', cipher,
'-s', str(size), self.device, '-d', '-'
], stdin=subprocess.PIPE
)
p.stdin.write(key)
p.communicate()[0]
p.stdin.close()
if p.returncode != 0:
raise ValueError('Error to create the luks device {}'.format(self.device))
def main():
fields = {
'device': { 'type': 'str', 'required': True },
'cipher': { 'type': 'str', 'default': 'aes-xts-plain' },
'size': { 'type': 'int', 'default': 256 },
'key': { 'type': 'str', 'required': True }
}
module = AnsibleModule(argument_spec=fields)
changed = False
luks = LuksManage(module.params['device'])
if not luks.is_luks():
luks.create(
module.params['cipher'],
module.params['size'],
module.params['key']
)
changed = True
module.exit_json(changed=changed)
if __name__ == '__main__':
main()