440 lines
17 KiB
Python
440 lines
17 KiB
Python
#!/usr/bin/python
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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#
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ANSIBLE_METADATA = {'metadata_version': '1.1',
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'status': ['preview'],
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'supported_by': 'network'}
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DOCUMENTATION = '''
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---
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module: nxos_interface_ospf
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extends_documentation_fragment: nxos
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version_added: "2.2"
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short_description: Manages configuration of an OSPF interface instance.
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description:
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- Manages configuration of an OSPF interface instance.
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author: Gabriele Gerbino (@GGabriele)
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notes:
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- Tested against NXOSv 7.3.(0)D1(1) on VIRL
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- Default, where supported, restores params default value.
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- To remove an existing authentication configuration you should use
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C(message_digest_key_id=default) plus all other options matching their
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existing values.
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- C(state=absent) removes the whole OSPF interface configuration.
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options:
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interface:
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description:
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- Name of this cisco_interface resource. Valid value is a string.
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required: true
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ospf:
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description:
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- Name of the ospf instance.
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required: true
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area:
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description:
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- Ospf area associated with this cisco_interface_ospf instance.
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Valid values are a string, formatted as an IP address
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(i.e. "0.0.0.0") or as an integer.
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required: true
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cost:
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description:
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- The cost associated with this cisco_interface_ospf instance.
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hello_interval:
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description:
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- Time between sending successive hello packets.
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Valid values are an integer or the keyword 'default'.
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dead_interval:
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description:
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- Time interval an ospf neighbor waits for a hello
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packet before tearing down adjacencies. Valid values are an
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integer or the keyword 'default'.
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passive_interface:
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description:
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- Setting to true will prevent this interface from receiving
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HELLO packets.
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type: bool
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message_digest:
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description:
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- Enables or disables the usage of message digest authentication.
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type: bool
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message_digest_key_id:
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description:
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- Md5 authentication key-id associated with the ospf instance.
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If this is present, message_digest_encryption_type,
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message_digest_algorithm_type and message_digest_password are
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mandatory. Valid value is an integer and 'default'.
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message_digest_algorithm_type:
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description:
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- Algorithm used for authentication among neighboring routers
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within an area. Valid values are 'md5' and 'default'.
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choices: ['md5', 'default']
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message_digest_encryption_type:
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description:
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- Specifies the scheme used for encrypting message_digest_password.
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Valid values are '3des' or 'cisco_type_7' encryption or 'default'.
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choices: ['cisco_type_7','3des', 'default']
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message_digest_password:
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description:
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- Specifies the message_digest password. Valid value is a string.
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state:
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description:
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- Determines whether the config should be present or not
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on the device.
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default: present
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choices: ['present','absent']
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'''
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EXAMPLES = '''
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- nxos_interface_ospf:
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interface: ethernet1/32
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ospf: 1
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area: 1
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cost: default
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'''
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RETURN = '''
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commands:
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description: commands sent to the device
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returned: always
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type: list
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sample: ["interface Ethernet1/32", "ip router ospf 1 area 0.0.0.1"]
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'''
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import re
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import struct
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import socket
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from ansible.module_utils.network.nxos.nxos import get_config, load_config
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from ansible.module_utils.network.nxos.nxos import nxos_argument_spec, check_args
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from ansible.module_utils.basic import AnsibleModule
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from ansible.module_utils.network.common.config import CustomNetworkConfig
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BOOL_PARAMS = [
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'passive_interface',
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'message_digest'
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]
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PARAM_TO_COMMAND_KEYMAP = {
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'interface': '',
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'cost': 'ip ospf cost',
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'ospf': 'ip router ospf',
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'area': 'ip router ospf',
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'hello_interval': 'ip ospf hello-interval',
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'dead_interval': 'ip ospf dead-interval',
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'passive_interface': 'ip ospf passive-interface',
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'message_digest': 'ip ospf authentication message-digest',
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'message_digest_key_id': 'ip ospf message-digest-key',
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'message_digest_algorithm_type': 'ip ospf message-digest-key',
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'message_digest_encryption_type': 'ip ospf message-digest-key',
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'message_digest_password': 'ip ospf message-digest-key',
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}
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def get_value(arg, config, module):
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command = PARAM_TO_COMMAND_KEYMAP[arg]
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has_command = re.search(r'\s+{0}\s*$'.format(command), config, re.M)
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has_command_val = re.search(r'(?:{0}\s)(?P<value>.*)$'.format(command), config, re.M)
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if command == 'ip router ospf':
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value = ''
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if has_command_val:
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value_list = has_command_val.group('value').split()
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if arg == 'ospf':
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value = value_list[0]
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elif arg == 'area':
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value = value_list[2]
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value = normalize_area(value, module)
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elif command == 'ip ospf message-digest-key':
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value = ''
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if has_command_val:
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value_list = has_command_val.group('value').split()
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if arg == 'message_digest_key_id':
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value = value_list[0]
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elif arg == 'message_digest_algorithm_type':
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value = value_list[1]
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elif arg == 'message_digest_encryption_type':
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value = value_list[2]
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if value == '3':
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value = '3des'
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elif value == '7':
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value = 'cisco_type_7'
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elif arg == 'message_digest_password':
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value = value_list[3]
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elif arg == 'passive_interface':
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has_no_command = re.search(r'\s+no\s+{0}\s*$'.format(command), config, re.M)
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value = False
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if has_command and not has_no_command:
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value = True
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elif arg in BOOL_PARAMS:
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value = bool(has_command)
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else:
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value = ''
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if has_command_val:
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value = has_command_val.group('value')
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return value
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def get_existing(module, args):
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existing = {}
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netcfg = CustomNetworkConfig(indent=2, contents=get_config(module))
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if module.params['interface'].startswith('loopback') or module.params['interface'].startswith('port-channel'):
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parents = ['interface {0}'.format(module.params['interface'])]
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else:
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parents = ['interface {0}'.format(module.params['interface'].capitalize())]
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config = netcfg.get_section(parents)
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if 'ospf' in config:
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for arg in args:
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if arg not in ['interface']:
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existing[arg] = get_value(arg, config, module)
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existing['interface'] = module.params['interface']
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return existing
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def apply_key_map(key_map, table):
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new_dict = {}
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for key, value in table.items():
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new_key = key_map.get(key)
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if new_key:
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new_dict[new_key] = value
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return new_dict
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def get_default_commands(existing, proposed, existing_commands, key, module):
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commands = list()
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existing_value = existing_commands.get(key)
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if key.startswith('ip ospf message-digest-key'):
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check = False
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for param in ['message_digest_encryption_type',
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'message_digest_algorithm_type',
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'message_digest_password']:
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if existing[param] == proposed[param]:
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check = True
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if check:
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if existing['message_digest_encryption_type'] == '3des':
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encryption_type = '3'
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elif existing['message_digest_encryption_type'] == 'cisco_type_7':
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encryption_type = '7'
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command = 'no {0} {1} {2} {3} {4}'.format(
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key,
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existing['message_digest_key_id'],
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existing['message_digest_algorithm_type'],
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encryption_type,
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existing['message_digest_password'])
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commands.append(command)
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else:
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commands.append('no {0} {1}'.format(key, existing_value))
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return commands
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def get_custom_command(existing_cmd, proposed, key, module):
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commands = list()
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if key == 'ip router ospf':
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command = '{0} {1} area {2}'.format(key, proposed['ospf'],
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proposed['area'])
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if command not in existing_cmd:
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commands.append(command)
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elif key.startswith('ip ospf message-digest-key'):
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if (proposed['message_digest_key_id'] != 'default' and
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'options' not in key):
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if proposed['message_digest_encryption_type'] == '3des':
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encryption_type = '3'
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elif proposed['message_digest_encryption_type'] == 'cisco_type_7':
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encryption_type = '7'
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command = '{0} {1} {2} {3} {4}'.format(
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key,
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proposed['message_digest_key_id'],
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proposed['message_digest_algorithm_type'],
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encryption_type,
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proposed['message_digest_password'])
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commands.append(command)
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return commands
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def state_present(module, existing, proposed, candidate):
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commands = list()
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proposed_commands = apply_key_map(PARAM_TO_COMMAND_KEYMAP, proposed)
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existing_commands = apply_key_map(PARAM_TO_COMMAND_KEYMAP, existing)
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for key, value in proposed_commands.items():
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if existing_commands.get(key):
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if key == 'ip router ospf':
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if proposed['area'] == existing['area']:
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continue
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if existing_commands[key] == proposed_commands[key]:
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continue
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if key == 'ip ospf passive-interface' and module.params.get('interface').upper().startswith('LO'):
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module.fail_json(msg='loopback interface does not support passive_interface')
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if value is True:
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commands.append(key)
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elif value is False:
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commands.append('no {0}'.format(key))
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elif value == 'default':
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if existing_commands.get(key):
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commands.extend(get_default_commands(existing, proposed,
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existing_commands, key,
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module))
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else:
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if (key == 'ip router ospf' or
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key.startswith('ip ospf message-digest-key')):
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commands.extend(get_custom_command(commands, proposed,
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key, module))
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else:
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command = '{0} {1}'.format(key, value.lower())
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commands.append(command)
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if commands:
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parents = ['interface {0}'.format(module.params['interface'].capitalize())]
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candidate.add(commands, parents=parents)
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def state_absent(module, existing, proposed, candidate):
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commands = []
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parents = ['interface {0}'.format(module.params['interface'].capitalize())]
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existing_commands = apply_key_map(PARAM_TO_COMMAND_KEYMAP, existing)
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for key, value in existing_commands.items():
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if value:
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if key.startswith('ip ospf message-digest-key'):
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if 'options' not in key:
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if existing['message_digest_encryption_type'] == '3des':
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encryption_type = '3'
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elif existing['message_digest_encryption_type'] == 'cisco_type_7':
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encryption_type = '7'
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command = 'no {0} {1} {2} {3} {4}'.format(
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key,
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existing['message_digest_key_id'],
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existing['message_digest_algorithm_type'],
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encryption_type,
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existing['message_digest_password'])
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commands.append(command)
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elif key in ['ip ospf authentication message-digest',
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'ip ospf passive-interface']:
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if value:
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commands.append('no {0}'.format(key))
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elif key == 'ip router ospf':
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command = 'no {0} {1} area {2}'.format(key, proposed['ospf'], proposed['area'])
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if command not in commands:
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commands.append(command)
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else:
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existing_value = existing_commands.get(key)
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commands.append('no {0} {1}'.format(key, existing_value))
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candidate.add(commands, parents=parents)
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def normalize_area(area, module):
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try:
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area = int(area)
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area = socket.inet_ntoa(struct.pack('!L', area))
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except ValueError:
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splitted_area = area.split('.')
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if len(splitted_area) != 4:
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module.fail_json(msg='Incorrect Area ID format', area=area)
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return area
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def main():
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argument_spec = dict(
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interface=dict(required=True, type='str'),
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ospf=dict(required=True, type='str'),
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area=dict(required=True, type='str'),
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cost=dict(required=False, type='str'),
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hello_interval=dict(required=False, type='str'),
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dead_interval=dict(required=False, type='str'),
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passive_interface=dict(required=False, type='bool'),
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message_digest=dict(required=False, type='bool'),
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message_digest_key_id=dict(required=False, type='str'),
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message_digest_algorithm_type=dict(required=False, type='str', choices=['md5', 'default']),
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message_digest_encryption_type=dict(required=False, type='str', choices=['cisco_type_7', '3des', 'default']),
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message_digest_password=dict(required=False, type='str', no_log=True),
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state=dict(choices=['present', 'absent'], default='present', required=False)
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)
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argument_spec.update(nxos_argument_spec)
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module = AnsibleModule(argument_spec=argument_spec,
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required_together=[['message_digest_key_id',
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'message_digest_algorithm_type',
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'message_digest_encryption_type',
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'message_digest_password']],
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supports_check_mode=True)
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# Normalize interface input data.
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#
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# * For port-channel and loopback interfaces expection is all lower case names.
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# * All other interfaces the expectation is an uppercase leading character
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# followed by lower case characters.
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#
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if re.match(r'(port-channel|loopback)', module.params['interface'], re.I):
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module.params['interface'] = module.params['interface'].lower()
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else:
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module.params['interface'] = module.params['interface'].capitalize()
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warnings = list()
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check_args(module, warnings)
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result = {'changed': False, 'commands': [], 'warnings': warnings}
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for param in ['message_digest_encryption_type',
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'message_digest_algorithm_type',
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'message_digest_password']:
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if module.params[param] == 'default' and module.params['message_digest_key_id'] != 'default':
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module.exit_json(msg='Use message_digest_key_id=default to remove an existing authentication configuration')
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state = module.params['state']
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args = PARAM_TO_COMMAND_KEYMAP.keys()
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existing = get_existing(module, args)
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proposed_args = dict((k, v) for k, v in module.params.items()
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if v is not None and k in args)
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proposed = {}
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for key, value in proposed_args.items():
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if key != 'interface':
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if str(value).lower() == 'true':
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value = True
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elif str(value).lower() == 'false':
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value = False
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elif str(value).lower() == 'default':
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value = 'default'
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if existing.get(key) or (not existing.get(key) and value):
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proposed[key] = value
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proposed['area'] = normalize_area(proposed['area'], module)
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if 'hello_interval' in proposed and proposed['hello_interval'] == '10':
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proposed['hello_interval'] = 'default'
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candidate = CustomNetworkConfig(indent=3)
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if state == 'present':
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state_present(module, existing, proposed, candidate)
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elif state == 'absent' and existing.get('ospf') == proposed['ospf'] and existing.get('area') == proposed['area']:
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state_absent(module, existing, proposed, candidate)
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if candidate:
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candidate = candidate.items_text()
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load_config(module, candidate)
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result['changed'] = True
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result['commands'] = candidate
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module.exit_json(**result)
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if __name__ == '__main__':
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main()
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