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luks_device: add basic check mode (#54477)

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* Add basic check mode.

* One more early exit.

* Fix naming.

* Check that device is actually an existing device.
pull/55033/head
Felix Fontein 6 years ago committed by René Moser
parent 1ed8ed766c
commit bb52390b04
3 changed files with 195 additions and 125 deletions
Show Stats Download Patch File Download Diff File

40
lib/ansible/modules/crypto/luks_device.py
Unescape Escape View File

@ -101,13 +101,6 @@ requirements:
- "wipefs" - "wipefs"
- "lsblk" - "lsblk"
notes:
- "This module does not support check mode. The reason being that
while it is possible to chain several operations together
(e.g. 'create' and 'open'), the latter usually depends on changes
to the system done by the previous one. (LUKS cannot be opened,
when it does not exist.)"
author: author:
"Jan Pokorny (@japokorn)" "Jan Pokorny (@japokorn)"
''' '''
@ -172,7 +165,9 @@ name:
sample: "luks-c1da9a58-2fde-4256-9d9f-6ab008b4dd1b" sample: "luks-c1da9a58-2fde-4256-9d9f-6ab008b4dd1b"
''' '''
import os
import re import re
import stat
from ansible.module_utils.basic import AnsibleModule from ansible.module_utils.basic import AnsibleModule
@ -249,7 +244,7 @@ class CryptHandler(Handler):
return device return device
def is_luks(self, device): def is_luks(self, device):
''' check if the LUKS device does exist ''' check if the LUKS container does exist
''' '''
result = self._run_command([self._cryptsetup_bin, 'isLuks', device]) result = self._run_command([self._cryptsetup_bin, 'isLuks', device])
return result[RETURN_CODE] == 0 return result[RETURN_CODE] == 0
@ -464,7 +459,16 @@ def run_module():
) )
module = AnsibleModule(argument_spec=module_args, module = AnsibleModule(argument_spec=module_args,
supports_check_mode=False) supports_check_mode=True)
if module.params['device'] is not None:
try:
statinfo = os.stat(module.params['device'])
mode = statinfo.st_mode
if not stat.S_ISBLK(mode) and not stat.S_ISCHR(mode):
raise Exception('{0} is not a device'.format(module.params['device']))
except Exception as e:
module.fail_json(msg=str(e))
crypt = CryptHandler(module) crypt = CryptHandler(module)
conditions = ConditionsHandler(module, crypt) conditions = ConditionsHandler(module, crypt)
@ -474,12 +478,15 @@ def run_module():
# luks create # luks create
if conditions.luks_create(): if conditions.luks_create():
if not module.check_mode:
try: try:
crypt.run_luks_create(module.params['device'], crypt.run_luks_create(module.params['device'],
module.params['keyfile']) module.params['keyfile'])
except ValueError as e: except ValueError as e:
module.fail_json(msg="luks_device error: %s" % e) module.fail_json(msg="luks_device error: %s" % e)
result['changed'] = True result['changed'] = True
if module.check_mode:
module.exit_json(**result)
# luks open # luks open
@ -494,6 +501,7 @@ def run_module():
name = crypt.generate_luks_name(module.params['device']) name = crypt.generate_luks_name(module.params['device'])
except ValueError as e: except ValueError as e:
module.fail_json(msg="luks_device error: %s" % e) module.fail_json(msg="luks_device error: %s" % e)
if not module.check_mode:
try: try:
crypt.run_luks_open(module.params['device'], crypt.run_luks_open(module.params['device'],
module.params['keyfile'], module.params['keyfile'],
@ -502,6 +510,8 @@ def run_module():
module.fail_json(msg="luks_device error: %s" % e) module.fail_json(msg="luks_device error: %s" % e)
result['name'] = name result['name'] = name
result['changed'] = True result['changed'] = True
if module.check_mode:
module.exit_json(**result)
# luks close # luks close
if conditions.luks_close(): if conditions.luks_close():
@ -513,14 +523,18 @@ def run_module():
module.fail_json(msg="luks_device error: %s" % e) module.fail_json(msg="luks_device error: %s" % e)
else: else:
name = module.params['name'] name = module.params['name']
if not module.check_mode:
try: try:
crypt.run_luks_close(name) crypt.run_luks_close(name)
except ValueError as e: except ValueError as e:
module.fail_json(msg="luks_device error: %s" % e) module.fail_json(msg="luks_device error: %s" % e)
result['changed'] = True result['changed'] = True
if module.check_mode:
module.exit_json(**result)
# luks add key # luks add key
if conditions.luks_add_key(): if conditions.luks_add_key():
if not module.check_mode:
try: try:
crypt.run_luks_add_key(module.params['device'], crypt.run_luks_add_key(module.params['device'],
module.params['keyfile'], module.params['keyfile'],
@ -528,9 +542,12 @@ def run_module():
except ValueError as e: except ValueError as e:
module.fail_json(msg="luks_device error: %s" % e) module.fail_json(msg="luks_device error: %s" % e)
result['changed'] = True result['changed'] = True
if module.check_mode:
module.exit_json(**result)
# luks remove key # luks remove key
if conditions.luks_remove_key(): if conditions.luks_remove_key():
if not module.check_mode:
try: try:
crypt.run_luks_remove_key(module.params['device'], crypt.run_luks_remove_key(module.params['device'],
module.params['remove_keyfile'], module.params['remove_keyfile'],
@ -538,14 +555,19 @@ def run_module():
except ValueError as e: except ValueError as e:
module.fail_json(msg="luks_device error: %s" % e) module.fail_json(msg="luks_device error: %s" % e)
result['changed'] = True result['changed'] = True
if module.check_mode:
module.exit_json(**result)
# luks remove # luks remove
if conditions.luks_remove(): if conditions.luks_remove():
if not module.check_mode:
try: try:
crypt.run_luks_remove(module.params['device']) crypt.run_luks_remove(module.params['device'])
except ValueError as e: except ValueError as e:
module.fail_json(msg="luks_device error: %s" % e) module.fail_json(msg="luks_device error: %s" % e)
result['changed'] = True result['changed'] = True
if module.check_mode:
module.exit_json(**result)
# Success - return result # Success - return result
module.exit_json(**result) module.exit_json(**result)

168
test/integration/targets/luks_device/tasks/tests/create-destroy.yml
Unescape Escape View File

@ -1,12 +1,12 @@
--- ---
#- name: Create (check) - name: Create (check)
# luks_device: luks_device:
# device: "{{ cryptfile_device }}" device: "{{ cryptfile_device }}"
# state: present state: present
# keyfile: "{{ role_path }}/files/keyfile1" keyfile: "{{ role_path }}/files/keyfile1"
# check_mode: yes check_mode: yes
# become: yes become: yes
# register: create_check register: create_check
- name: Create - name: Create
luks_device: luks_device:
device: "{{ cryptfile_device }}" device: "{{ cryptfile_device }}"
@ -21,29 +21,29 @@
keyfile: "{{ role_path }}/files/keyfile1" keyfile: "{{ role_path }}/files/keyfile1"
become: yes become: yes
register: create_idem register: create_idem
#- name: Create (idempotent, check) - name: Create (idempotent, check)
# luks_device: luks_device:
# device: "{{ cryptfile_device }}" device: "{{ cryptfile_device }}"
# state: present state: present
# keyfile: "{{ role_path }}/files/keyfile1" keyfile: "{{ role_path }}/files/keyfile1"
# check_mode: yes check_mode: yes
# become: yes become: yes
# register: create_idem_check register: create_idem_check
- assert: - assert:
that: that:
#- create_check is changed - create_check is changed
- create is changed - create is changed
- create_idem is not changed - create_idem is not changed
#- create_idem_check is not changed - create_idem_check is not changed
#- name: Open (check) - name: Open (check)
# luks_device: luks_device:
# device: "{{ cryptfile_device }}" device: "{{ cryptfile_device }}"
# state: opened state: opened
# keyfile: "{{ role_path }}/files/keyfile1" keyfile: "{{ role_path }}/files/keyfile1"
# check_mode: yes check_mode: yes
# become: yes become: yes
# register: open_check register: open_check
- name: Open - name: Open
luks_device: luks_device:
device: "{{ cryptfile_device }}" device: "{{ cryptfile_device }}"
@ -58,28 +58,28 @@
keyfile: "{{ role_path }}/files/keyfile1" keyfile: "{{ role_path }}/files/keyfile1"
become: yes become: yes
register: open_idem register: open_idem
#- name: Open (idempotent, check) - name: Open (idempotent, check)
# luks_device: luks_device:
# device: "{{ cryptfile_device }}" device: "{{ cryptfile_device }}"
# state: opened state: opened
# keyfile: "{{ role_path }}/files/keyfile1" keyfile: "{{ role_path }}/files/keyfile1"
# check_mode: yes check_mode: yes
# become: yes become: yes
# register: open_idem_check register: open_idem_check
- assert: - assert:
that: that:
#- open_check is changed - open_check is changed
- open is changed - open is changed
- open_idem is not changed - open_idem is not changed
#- open_idem_check is not changed - open_idem_check is not changed
#- name: Closed (via name, check) - name: Closed (via name, check)
# luks_device: luks_device:
# name: "{{ open.name }}" name: "{{ open.name }}"
# state: closed state: closed
# check_mode: yes check_mode: yes
# become: yes become: yes
# register: close_check register: close_check
- name: Closed (via name) - name: Closed (via name)
luks_device: luks_device:
name: "{{ open.name }}" name: "{{ open.name }}"
@ -92,19 +92,19 @@
state: closed state: closed
become: yes become: yes
register: close_idem register: close_idem
#- name: Closed (via name, idempotent, check) - name: Closed (via name, idempotent, check)
# luks_device: luks_device:
# name: "{{ open.name }}" name: "{{ open.name }}"
# state: closed state: closed
# check_mode: yes check_mode: yes
# become: yes become: yes
# register: close_idem_check register: close_idem_check
- assert: - assert:
that: that:
#- close_check is changed - close_check is changed
- close is changed - close is changed
- close_idem is not changed - close_idem is not changed
#- close_idem_check is not changed - close_idem_check is not changed
- name: Re-open - name: Re-open
luks_device: luks_device:
@ -113,13 +113,13 @@
keyfile: "{{ role_path }}/files/keyfile1" keyfile: "{{ role_path }}/files/keyfile1"
become: yes become: yes
#- name: Closed (via device, check) - name: Closed (via device, check)
# luks_device: luks_device:
# device: "{{ cryptfile_device }}" device: "{{ cryptfile_device }}"
# state: closed state: closed
# check_mode: yes check_mode: yes
# become: yes become: yes
# register: close_check register: close_check
- name: Closed (via device) - name: Closed (via device)
luks_device: luks_device:
device: "{{ cryptfile_device }}" device: "{{ cryptfile_device }}"
@ -132,19 +132,19 @@
state: closed state: closed
become: yes become: yes
register: close_idem register: close_idem
#- name: Closed (via device, idempotent, check) - name: Closed (via device, idempotent, check)
# luks_device: luks_device:
# device: "{{ cryptfile_device }}" device: "{{ cryptfile_device }}"
# state: closed state: closed
# check_mode: yes check_mode: yes
# become: yes become: yes
# register: close_idem_check register: close_idem_check
- assert: - assert:
that: that:
#- close_check is changed - close_check is changed
- close is changed - close is changed
- close_idem is not changed - close_idem is not changed
#- close_idem_check is not changed - close_idem_check is not changed
- name: Re-opened - name: Re-opened
luks_device: luks_device:
@ -153,13 +153,13 @@
keyfile: "{{ role_path }}/files/keyfile1" keyfile: "{{ role_path }}/files/keyfile1"
become: yes become: yes
#- name: Absent (check) - name: Absent (check)
# luks_device: luks_device:
# device: "{{ cryptfile_device }}" device: "{{ cryptfile_device }}"
# state: absent state: absent
# check_mode: yes check_mode: yes
# become: yes become: yes
# register: absent_check register: absent_check
- name: Absent - name: Absent
luks_device: luks_device:
device: "{{ cryptfile_device }}" device: "{{ cryptfile_device }}"
@ -172,16 +172,16 @@
state: absent state: absent
become: yes become: yes
register: absent_idem register: absent_idem
#- name: Absent (idempotence, check) - name: Absent (idempotence, check)
# luks_device: luks_device:
# device: "{{ cryptfile_device }}" device: "{{ cryptfile_device }}"
# state: absent state: absent
# check_mode: yes check_mode: yes
# become: yes become: yes
# register: absent_idem_check register: absent_idem_check
- assert: - assert:
that: that:
#- absent_check is changed - absent_check is changed
- absent is changed - absent is changed
- absent_idem is not changed - absent_idem is not changed
#- absent_idem_check is not changed - absent_idem_check is not changed

48
test/integration/targets/luks_device/tasks/tests/device-check.yml
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@ -0,0 +1,48 @@
---
- name: Create with invalid device name (check)
luks_device:
device: /dev/asdfasdfasdf
state: present
keyfile: "{{ role_path }}/files/keyfile1"
check_mode: yes
ignore_errors: yes
become: yes
register: create_check
- name: Create with invalid device name
luks_device:
device: /dev/asdfasdfasdf
state: present
keyfile: "{{ role_path }}/files/keyfile1"
ignore_errors: yes
become: yes
register: create
- assert:
that:
- create_check is failed
- create is failed
- "'o such file or directory' in create_check.msg"
- "'o such file or directory' in create.msg"
- name: Create with something which is not a device (check)
luks_device:
device: /tmp/
state: present
keyfile: "{{ role_path }}/files/keyfile1"
check_mode: yes
ignore_errors: yes
become: yes
register: create_check
- name: Create with something which is not a device
luks_device:
device: /tmp/
state: present
keyfile: "{{ role_path }}/files/keyfile1"
ignore_errors: yes
become: yes
register: create
- assert:
that:
- create_check is failed
- create is failed
- "'is not a device' in create_check.msg"
- "'is not a device' in create.msg"
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