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ec2_group.py
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ec2_group.py
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#!/usr/bin/python
# -*- coding: utf-8 -*-
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
ANSIBLE_METADATA = {'metadata_version': '1.1',
'status': ['stableinterface'],
'supported_by': 'core'}
DOCUMENTATION = '''
---
module: ec2_group
author: "Andrew de Quincey (@adq)"
version_added: "1.3"
requirements: [ boto3 ]
short_description: maintain an ec2 VPC security group.
description:
- maintains ec2 security groups. This module has a dependency on python-boto >= 2.5
options:
name:
description:
- Name of the security group.
- One of and only one of I(name) or I(group_id) is required.
- Required if I(state=present).
required: false
group_id:
description:
- Id of group to delete (works only with absent).
- One of and only one of I(name) or I(group_id) is required.
required: false
version_added: "2.4"
description:
description:
- Description of the security group. Required when C(state) is C(present).
required: false
vpc_id:
description:
- ID of the VPC to create the group in.
required: false
rules:
description:
- List of firewall inbound rules to enforce in this group (see example). If none are supplied,
no inbound rules will be enabled. Rules list may include its own name in `group_name`.
This allows idempotent loopback additions (e.g. allow group to access itself).
Rule sources list support was added in version 2.4. This allows to define multiple sources per
source type as well as multiple source types per rule. Prior to 2.4 an individual source is allowed.
In version 2.5 support for rule descriptions was added.
required: false
rules_egress:
description:
- List of firewall outbound rules to enforce in this group (see example). If none are supplied,
a default all-out rule is assumed. If an empty list is supplied, no outbound rules will be enabled.
Rule Egress sources list support was added in version 2.4. In version 2.5 support for rule descriptions
was added.
required: false
version_added: "1.6"
state:
version_added: "1.4"
description:
- Create or delete a security group
required: false
default: 'present'
choices: [ "present", "absent" ]
aliases: []
purge_rules:
version_added: "1.8"
description:
- Purge existing rules on security group that are not found in rules
required: false
default: 'true'
aliases: []
purge_rules_egress:
version_added: "1.8"
description:
- Purge existing rules_egress on security group that are not found in rules_egress
required: false
default: 'true'
aliases: []
tags:
version_added: "2.4"
description:
- A dictionary of one or more tags to assign to the security group.
required: false
purge_tags:
version_added: "2.4"
description:
- If yes, existing tags will be purged from the resource to match exactly what is defined by I(tags) parameter. If the I(tags) parameter is not set then
tags will not be modified.
required: false
default: yes
type: bool
extends_documentation_fragment:
- aws
- ec2
notes:
- If a rule declares a group_name and that group doesn't exist, it will be
automatically created. In that case, group_desc should be provided as well.
The module will refuse to create a depended-on group without a description.
'''
EXAMPLES = '''
- name: example using security group rule descriptions
ec2_group:
name: "{{ name }}"
description: sg with rule descriptions
vpc_id: vpc-xxxxxxxx
profile: "{{ aws_profile }}"
region: us-east-1
rules:
- proto: tcp
ports:
- 80
cidr_ip: 0.0.0.0/0
rule_desc: allow all on port 80
- name: example ec2 group
ec2_group:
name: example
description: an example EC2 group
vpc_id: 12345
region: eu-west-1
aws_secret_key: SECRET
aws_access_key: ACCESS
rules:
- proto: tcp
from_port: 80
to_port: 80
cidr_ip: 0.0.0.0/0
- proto: tcp
from_port: 22
to_port: 22
cidr_ip: 10.0.0.0/8
- proto: tcp
from_port: 443
to_port: 443
# this should only be needed for EC2 Classic security group rules
# because in a VPC an ELB will use a user-account security group
group_id: amazon-elb/sg-87654321/amazon-elb-sg
- proto: tcp
from_port: 3306
to_port: 3306
group_id: 123412341234/sg-87654321/exact-name-of-sg
- proto: udp
from_port: 10050
to_port: 10050
cidr_ip: 10.0.0.0/8
- proto: udp
from_port: 10051
to_port: 10051
group_id: sg-12345678
- proto: icmp
from_port: 8 # icmp type, -1 = any type
to_port: -1 # icmp subtype, -1 = any subtype
cidr_ip: 10.0.0.0/8
- proto: all
# the containing group name may be specified here
group_name: example
- proto: all
# in the 'proto' attribute, if you specify -1, all, or a protocol number other than tcp, udp, icmp, or 58 (ICMPv6),
# traffic on all ports is allowed, regardless of any ports you specify
from_port: 10050 # this value is ignored
to_port: 10050 # this value is ignored
cidr_ip: 10.0.0.0/8
rules_egress:
- proto: tcp
from_port: 80
to_port: 80
cidr_ip: 0.0.0.0/0
cidr_ipv6: 64:ff9b::/96
group_name: example-other
# description to use if example-other needs to be created
group_desc: other example EC2 group
- name: example2 ec2 group
ec2_group:
name: example2
description: an example2 EC2 group
vpc_id: 12345
region: eu-west-1
rules:
# 'ports' rule keyword was introduced in version 2.4. It accepts a single port value or a list of values including ranges (from_port-to_port).
- proto: tcp
ports: 22
group_name: example-vpn
- proto: tcp
ports:
- 80
- 443
- 8080-8099
cidr_ip: 0.0.0.0/0
# Rule sources list support was added in version 2.4. This allows to define multiple sources per source type as well as multiple source types per rule.
- proto: tcp
ports:
- 6379
- 26379
group_name:
- example-vpn
- example-redis
- proto: tcp
ports: 5665
group_name: example-vpn
cidr_ip:
- 172.16.1.0/24
- 172.16.17.0/24
cidr_ipv6:
- 2607:F8B0::/32
- 64:ff9b::/96
group_id:
- sg-edcd9784
- name: "Delete group by its id"
ec2_group:
group_id: sg-33b4ee5b
state: absent
'''
RETURN = '''
group_name:
description: Security group name
sample: My Security Group
type: string
returned: on create/update
group_id:
description: Security group id
sample: sg-abcd1234
type: string
returned: on create/update
description:
description: Description of security group
sample: My Security Group
type: string
returned: on create/update
tags:
description: Tags associated with the security group
sample:
Name: My Security Group
Purpose: protecting stuff
type: dict
returned: on create/update
vpc_id:
description: ID of VPC to which the security group belongs
sample: vpc-abcd1234
type: string
returned: on create/update
ip_permissions:
description: Inbound rules associated with the security group.
sample:
- from_port: 8182
ip_protocol: tcp
ip_ranges:
- cidr_ip: "1.1.1.1/32"
ipv6_ranges: []
prefix_list_ids: []
to_port: 8182
user_id_group_pairs: []
type: list
returned: on create/update
ip_permissions_egress:
description: Outbound rules associated with the security group.
sample:
- ip_protocol: -1
ip_ranges:
- cidr_ip: "0.0.0.0/0"
ipv6_ranges: []
prefix_list_ids: []
user_id_group_pairs: []
type: list
returned: on create/update
owner_id:
description: AWS Account ID of the security group
sample: 123456789012
type: int
returned: on create/update
'''
import json
import re
import itertools
from time import sleep
from collections import namedtuple
from ansible.module_utils.aws.core import AnsibleAWSModule, is_boto3_error_code
from ansible.module_utils.aws.iam import get_aws_account_id
from ansible.module_utils.aws.waiters import get_waiter
from ansible.module_utils.ec2 import AWSRetry, camel_dict_to_snake_dict, compare_aws_tags
from ansible.module_utils.ec2 import ansible_dict_to_boto3_filter_list, boto3_tag_list_to_ansible_dict, ansible_dict_to_boto3_tag_list
from ansible.module_utils.network.common.utils import to_ipv6_network, to_subnet
from ansible.module_utils._text import to_text
from ansible.module_utils.six import string_types
try:
from botocore.exceptions import BotoCoreError, ClientError
except ImportError:
pass # caught by AnsibleAWSModule
Rule = namedtuple('Rule', ['port_range', 'protocol', 'target', 'target_type', 'description'])
valid_targets = set(['ipv4', 'ipv6', 'group', 'ip_prefix'])
current_account_id = None
def rule_cmp(a, b):
"""Compare rules without descriptions"""
for prop in ['port_range', 'protocol', 'target', 'target_type']:
if prop == 'port_range' and to_text(a.protocol) == to_text(b.protocol):
# equal protocols can interchange `(-1, -1)` and `(None, None)`
if a.port_range in ((None, None), (-1, -1)) and b.port_range in ((None, None), (-1, -1)):
continue
elif getattr(a, prop) != getattr(b, prop):
return False
elif getattr(a, prop) != getattr(b, prop):
return False
return True
def rules_to_permissions(rules):
return [to_permission(rule) for rule in rules]
def to_permission(rule):
# take a Rule, output the serialized grant
perm = {
'IpProtocol': rule.protocol,
}
perm['FromPort'], perm['ToPort'] = rule.port_range
if rule.target_type == 'ipv4':
perm['IpRanges'] = [{
'CidrIp': rule.target,
}]
if rule.description:
perm['IpRanges'][0]['Description'] = rule.description
elif rule.target_type == 'ipv6':
perm['Ipv6Ranges'] = [{
'CidrIpv6': rule.target,
}]
if rule.description:
perm['Ipv6Ranges'][0]['Description'] = rule.description
elif rule.target_type == 'group':
if isinstance(rule.target, tuple):
pair = {}
if rule.target[0]:
pair['UserId'] = rule.target[0]
# groupid/groupname are mutually exclusive
if rule.target[1] and not rule.target[2]:
pair['GroupId'] = rule.target[1]
if rule.target[2]:
pair['GroupName'] = rule.target[2]
perm['UserIdGroupPairs'] = [pair]
else:
perm['UserIdGroupPairs'] = [{
'GroupId': rule.target
}]
if rule.description:
perm['UserIdGroupPairs'][0]['Description'] = rule.description
elif rule.target_type == 'ip_prefix':
perm['PrefixListIds'] = [{
'PrefixListId': rule.target,
}]
if rule.description:
perm['PrefixListIds'][0]['Description'] = rule.description
elif rule.target_type not in valid_targets:
raise ValueError('Invalid target type for rule {0}'.format(rule))
return fix_port_and_protocol(perm)
def rule_from_group_permission(perm):
def ports_from_permission(p):
if 'FromPort' not in p and 'ToPort' not in p:
return (None, None)
return (int(perm['FromPort']), int(perm['ToPort']))
# outputs a rule tuple
for target_key, target_subkey, target_type in [
('IpRanges', 'CidrIp', 'ipv4'),
('Ipv6Ranges', 'CidrIpv6', 'ipv6'),
('PrefixListIds', 'PrefixListId', 'ip_prefix'),
]:
if target_key not in perm:
continue
for r in perm[target_key]:
# there may be several IP ranges here, which is ok
yield Rule(
ports_from_permission(perm),
to_text(perm['IpProtocol']),
r[target_subkey],
target_type,
r.get('Description')
)
if 'UserIdGroupPairs' in perm and perm['UserIdGroupPairs']:
for pair in perm['UserIdGroupPairs']:
target = pair['GroupId']
if pair.get('UserId') and pair['UserId'] != current_account_id:
target = (
pair.get('UserId', None),
pair.get('GroupId', None),
pair.get('GroupName', None),
)
if pair.get('UserId', '').startswith('amazon-'):
# amazon-elb and amazon-prefix rules don't need
# group-id specified, so remove it when querying
# from permission
target = (
target[0],
None,
target[2],
)
yield Rule(
ports_from_permission(perm),
to_text(perm['IpProtocol']),
target,
'group',
pair.get('Description')
)
@AWSRetry.backoff(tries=5, delay=5, backoff=2.0)
def get_security_groups_with_backoff(connection, **kwargs):
return connection.describe_security_groups(**kwargs)
@AWSRetry.backoff(tries=5, delay=5, backoff=2.0)
def sg_exists_with_backoff(connection, **kwargs):
try:
return connection.describe_security_groups(**kwargs)
except is_boto3_error_code('InvalidGroup.NotFound'):
return {'SecurityGroups': []}
def deduplicate_rules_args(rules):
"""Returns unique rules"""
if rules is None:
return None
return list(dict(zip((json.dumps(r, sort_keys=True) for r in rules), rules)).values())
def validate_rule(module, rule):
VALID_PARAMS = ('cidr_ip', 'cidr_ipv6', 'ip_prefix',
'group_id', 'group_name', 'group_desc',
'proto', 'from_port', 'to_port', 'rule_desc')
if not isinstance(rule, dict):
module.fail_json(msg='Invalid rule parameter type [%s].' % type(rule))
for k in rule:
if k not in VALID_PARAMS:
module.fail_json(msg='Invalid rule parameter \'{0}\' for rule: {1}'.format(k, rule))
if 'group_id' in rule and 'cidr_ip' in rule:
module.fail_json(msg='Specify group_id OR cidr_ip, not both')
elif 'group_name' in rule and 'cidr_ip' in rule:
module.fail_json(msg='Specify group_name OR cidr_ip, not both')
elif 'group_id' in rule and 'cidr_ipv6' in rule:
module.fail_json(msg="Specify group_id OR cidr_ipv6, not both")
elif 'group_name' in rule and 'cidr_ipv6' in rule:
module.fail_json(msg="Specify group_name OR cidr_ipv6, not both")
elif 'cidr_ip' in rule and 'cidr_ipv6' in rule:
module.fail_json(msg="Specify cidr_ip OR cidr_ipv6, not both")
elif 'group_id' in rule and 'group_name' in rule:
module.fail_json(msg='Specify group_id OR group_name, not both')
def get_target_from_rule(module, client, rule, name, group, groups, vpc_id):
"""
Returns tuple of (target_type, target, group_created) after validating rule params.
rule: Dict describing a rule.
name: Name of the security group being managed.
groups: Dict of all available security groups.
AWS accepts an ip range or a security group as target of a rule. This
function validate the rule specification and return either a non-None
group_id or a non-None ip range.
"""
FOREIGN_SECURITY_GROUP_REGEX = r'^([^/]+)/?(sg-\S+)?/(\S+)'
group_id = None
group_name = None
target_group_created = False
validate_rule(module, rule)
if rule.get('group_id') and re.match(FOREIGN_SECURITY_GROUP_REGEX, rule['group_id']) and current_account_id not in rule['group_id']:
# this is a foreign Security Group. Since you can't fetch it you must create an instance of it
owner_id, group_id, group_name = re.match(FOREIGN_SECURITY_GROUP_REGEX, rule['group_id']).groups()
group_instance = dict(UserId=owner_id, GroupId=group_id, GroupName=group_name)
groups[group_id] = group_instance
groups[group_name] = group_instance
if group_id and group_name:
group_id = None
return 'group', (owner_id, group_id, group_name), False
elif 'group_id' in rule:
return 'group', rule['group_id'], False
elif 'group_name' in rule:
group_name = rule['group_name']
if group_name == name:
group_id = group['GroupId']
groups[group_id] = group
groups[group_name] = group
elif group_name in groups and group.get('VpcId') and groups[group_name].get('VpcId'):
# both are VPC groups, this is ok
group_id = groups[group_name]['GroupId']
elif group_name in groups and not (group.get('VpcId') or groups[group_name].get('VpcId')):
# both are EC2 classic, this is ok
group_id = groups[group_name]['GroupId']
else:
auto_group = None
filters = {'group-name': group_name}
if vpc_id:
filters['vpc-id'] = vpc_id
# if we got here, either the target group does not exist, or there
# is a mix of EC2 classic + VPC groups. Mixing of EC2 classic + VPC
# is bad, so we have to create a new SG because no compatible group
# exists
if not rule.get('group_desc', '').strip():
# retry describing the group once
try:
auto_group = get_security_groups_with_backoff(client, Filters=ansible_dict_to_boto3_filter_list(filters)).get('SecurityGroups', [])[0]
except (is_boto3_error_code('InvalidGroup.NotFound'), IndexError):
module.fail_json(msg="group %s will be automatically created by rule %s but "
"no description was provided" % (group_name, rule))
except ClientError as e: # pylint: disable=duplicate-except
module.fail_json_aws(e)
elif not module.check_mode:
params = dict(GroupName=group_name, Description=rule['group_desc'])
if vpc_id:
params['VpcId'] = vpc_id
try:
auto_group = client.create_security_group(**params)
get_waiter(
client, 'security_group_exists',
).wait(
GroupIds=[auto_group['GroupId']],
)
except is_boto3_error_code('InvalidGroup.Duplicate'):
# The group exists, but didn't show up in any of our describe-security-groups calls
# Try searching on a filter for the name, and allow a retry window for AWS to update
# the model on their end.
try:
auto_group = get_security_groups_with_backoff(client, Filters=ansible_dict_to_boto3_filter_list(filters)).get('SecurityGroups', [])[0]
except IndexError as e:
module.fail_json(msg="Could not create or use existing group '{0}' in rule. Make sure the group exists".format(group_name))
except ClientError as e:
module.fail_json_aws(
e,
msg="Could not create or use existing group '{0}' in rule. Make sure the group exists".format(group_name))
if auto_group is not None:
group_id = auto_group['GroupId']
groups[group_id] = auto_group
groups[group_name] = auto_group
target_group_created = True
return 'group', group_id, target_group_created
elif 'cidr_ip' in rule:
return 'ipv4', validate_ip(module, rule['cidr_ip']), False
elif 'cidr_ipv6' in rule:
return 'ipv6', validate_ip(module, rule['cidr_ipv6']), False
elif 'ip_prefix' in rule:
return 'ip_prefix', rule['ip_prefix'], False
module.fail_json(msg="Could not match target for rule {0}".format(rule), failed_rule=rule)
def ports_expand(ports):
# takes a list of ports and returns a list of (port_from, port_to)
ports_expanded = []
for port in ports:
if not isinstance(port, string_types):
ports_expanded.append((port,) * 2)
elif '-' in port:
ports_expanded.append(tuple(int(p.strip()) for p in port.split('-', 1)))
else:
ports_expanded.append((int(port.strip()),) * 2)
return ports_expanded
def rule_expand_ports(rule):
# takes a rule dict and returns a list of expanded rule dicts
if 'ports' not in rule:
if isinstance(rule.get('from_port'), string_types):
rule['from_port'] = int(rule.get('from_port'))
if isinstance(rule.get('to_port'), string_types):
rule['to_port'] = int(rule.get('to_port'))
return [rule]
ports = rule['ports'] if isinstance(rule['ports'], list) else [rule['ports']]
rule_expanded = []
for from_to in ports_expand(ports):
temp_rule = rule.copy()
del temp_rule['ports']
temp_rule['from_port'], temp_rule['to_port'] = sorted(from_to)
rule_expanded.append(temp_rule)
return rule_expanded
def rules_expand_ports(rules):
# takes a list of rules and expands it based on 'ports'
if not rules:
return rules
return [rule for rule_complex in rules
for rule in rule_expand_ports(rule_complex)]
def rule_expand_source(rule, source_type):
# takes a rule dict and returns a list of expanded rule dicts for specified source_type
sources = rule[source_type] if isinstance(rule[source_type], list) else [rule[source_type]]
source_types_all = ('cidr_ip', 'cidr_ipv6', 'group_id', 'group_name', 'ip_prefix')
rule_expanded = []
for source in sources:
temp_rule = rule.copy()
for s in source_types_all:
temp_rule.pop(s, None)
temp_rule[source_type] = source
rule_expanded.append(temp_rule)
return rule_expanded
def rule_expand_sources(rule):
# takes a rule dict and returns a list of expanded rule discts
source_types = (stype for stype in ('cidr_ip', 'cidr_ipv6', 'group_id', 'group_name', 'ip_prefix') if stype in rule)
return [r for stype in source_types
for r in rule_expand_source(rule, stype)]
def rules_expand_sources(rules):
# takes a list of rules and expands it based on 'cidr_ip', 'group_id', 'group_name'
if not rules:
return rules
return [rule for rule_complex in rules
for rule in rule_expand_sources(rule_complex)]
def update_rules_description(module, client, rule_type, group_id, ip_permissions):
if module.check_mode:
return
try:
if rule_type == "in":
client.update_security_group_rule_descriptions_ingress(GroupId=group_id, IpPermissions=ip_permissions)
if rule_type == "out":
client.update_security_group_rule_descriptions_egress(GroupId=group_id, IpPermissions=ip_permissions)
except (ClientError, BotoCoreError) as e:
module.fail_json_aws(e, msg="Unable to update rule description for group %s" % group_id)
def fix_port_and_protocol(permission):
for key in ('FromPort', 'ToPort'):
if key in permission:
if permission[key] is None:
del permission[key]
else:
permission[key] = int(permission[key])
permission['IpProtocol'] = to_text(permission['IpProtocol'])
return permission
def remove_old_permissions(client, module, revoke_ingress, revoke_egress, group_id):
if revoke_ingress:
revoke(client, module, revoke_ingress, group_id, 'in')
if revoke_egress:
revoke(client, module, revoke_egress, group_id, 'out')
return bool(revoke_ingress or revoke_egress)
def revoke(client, module, ip_permissions, group_id, rule_type):
if not module.check_mode:
try:
if rule_type == 'in':
client.revoke_security_group_ingress(GroupId=group_id, IpPermissions=ip_permissions)
elif rule_type == 'out':
client.revoke_security_group_egress(GroupId=group_id, IpPermissions=ip_permissions)
except (BotoCoreError, ClientError) as e:
rules = 'ingress rules' if rule_type == 'in' else 'egress rules'
module.fail_json_aws(e, "Unable to revoke {0}: {1}".format(rules, ip_permissions))
def add_new_permissions(client, module, new_ingress, new_egress, group_id):
if new_ingress:
authorize(client, module, new_ingress, group_id, 'in')
if new_egress:
authorize(client, module, new_egress, group_id, 'out')
return bool(new_ingress or new_egress)
def authorize(client, module, ip_permissions, group_id, rule_type):
if not module.check_mode:
try:
if rule_type == 'in':
client.authorize_security_group_ingress(GroupId=group_id, IpPermissions=ip_permissions)
elif rule_type == 'out':
client.authorize_security_group_egress(GroupId=group_id, IpPermissions=ip_permissions)
except (BotoCoreError, ClientError) as e:
rules = 'ingress rules' if rule_type == 'in' else 'egress rules'
module.fail_json_aws(e, "Unable to authorize {0}: {1}".format(rules, ip_permissions))
def validate_ip(module, cidr_ip):
split_addr = cidr_ip.split('/')
if len(split_addr) == 2:
# this_ip is a IPv4 or IPv6 CIDR that may or may not have host bits set
# Get the network bits.
try:
ip = to_subnet(split_addr[0], split_addr[1])
except ValueError:
ip = to_ipv6_network(split_addr[0]) + "/" + split_addr[1]
if ip != cidr_ip:
module.warn("One of your CIDR addresses ({0}) has host bits set. To get rid of this warning, "
"check the network mask and make sure that only network bits are set: {1}.".format(cidr_ip, ip))
return ip
return cidr_ip
def update_tags(client, module, group_id, current_tags, tags, purge_tags):
tags_need_modify, tags_to_delete = compare_aws_tags(current_tags, tags, purge_tags)
if not module.check_mode:
if tags_to_delete:
try:
client.delete_tags(Resources=[group_id], Tags=[{'Key': tag} for tag in tags_to_delete])
except (BotoCoreError, ClientError) as e:
module.fail_json_aws(e, msg="Unable to delete tags {0}".format(tags_to_delete))
# Add/update tags
if tags_need_modify:
try:
client.create_tags(Resources=[group_id], Tags=ansible_dict_to_boto3_tag_list(tags_need_modify))
except (BotoCoreError, ClientError) as e:
module.fail_json(e, msg="Unable to add tags {0}".format(tags_need_modify))
return bool(tags_need_modify or tags_to_delete)
def update_rule_descriptions(module, group_id, present_ingress, named_tuple_ingress_list, present_egress, named_tuple_egress_list):
changed = False
client = module.client('ec2')
ingress_needs_desc_update = []
egress_needs_desc_update = []
for present_rule in present_egress:
needs_update = [r for r in named_tuple_egress_list if rule_cmp(r, present_rule) and r.description != present_rule.description]
for r in needs_update:
named_tuple_egress_list.remove(r)
egress_needs_desc_update.extend(needs_update)
for present_rule in present_ingress:
needs_update = [r for r in named_tuple_ingress_list if rule_cmp(r, present_rule) and r.description != present_rule.description]
for r in needs_update:
named_tuple_ingress_list.remove(r)
ingress_needs_desc_update.extend(needs_update)
if ingress_needs_desc_update:
update_rules_description(module, client, 'in', group_id, rules_to_permissions(ingress_needs_desc_update))
changed |= True
if egress_needs_desc_update:
update_rules_description(module, client, 'out', group_id, rules_to_permissions(egress_needs_desc_update))
changed |= True
return changed
def create_security_group(client, module, name, description, vpc_id):
if not module.check_mode:
params = dict(GroupName=name, Description=description)
if vpc_id:
params['VpcId'] = vpc_id
try:
group = client.create_security_group(**params)
except (BotoCoreError, ClientError) as e:
module.fail_json_aws(e, msg="Unable to create security group")
# When a group is created, an egress_rule ALLOW ALL
# to 0.0.0.0/0 is added automatically but it's not
# reflected in the object returned by the AWS API
# call. We re-read the group for getting an updated object
# amazon sometimes takes a couple seconds to update the security group so wait till it exists
while True:
sleep(3)
group = get_security_groups_with_backoff(client, GroupIds=[group['GroupId']])['SecurityGroups'][0]
if group.get('VpcId') and not group.get('IpPermissionsEgress'):
pass
else:
break
return group
return None
def wait_for_rule_propagation(module, group, desired_ingress, desired_egress, purge_ingress, purge_egress):
group_id = group['GroupId']
tries = 6
def await_rules(group, desired_rules, purge, rule_key):
for i in range(tries):
current_rules = set(sum([list(rule_from_group_permission(p)) for p in group[rule_key]], []))
if purge and len(current_rules ^ set(desired_rules)) == 0:
return group
elif purge:
conflicts = current_rules ^ set(desired_rules)
# For cases where set comparison is equivalent, but invalid port/proto exist
for a, b in itertools.combinations(conflicts, 2):
if rule_cmp(a, b):
conflicts.discard(a)
conflicts.discard(b)
if not len(conflicts):
return group
elif current_rules.issuperset(desired_rules) and not purge:
return group
sleep(10)
group = get_security_groups_with_backoff(module.client('ec2'), GroupIds=[group_id])['SecurityGroups'][0]
module.warn("Ran out of time waiting for {0} {1}. Current: {2}, Desired: {3}".format(group_id, rule_key, current_rules, desired_rules))
return group
group = get_security_groups_with_backoff(module.client('ec2'), GroupIds=[group_id])['SecurityGroups'][0]
if 'VpcId' in group and module.params.get('rules_egress') is not None:
group = await_rules(group, desired_egress, purge_egress, 'IpPermissionsEgress')
return await_rules(group, desired_ingress, purge_ingress, 'IpPermissions')
def group_exists(client, module, vpc_id, group_id, name):
params = {'Filters': []}
if group_id:
params['GroupIds'] = [group_id]
if name:
# Add name to filters rather than params['GroupNames']
# because params['GroupNames'] only checks the default vpc if no vpc is provided
params['Filters'].append({'Name': 'group-name', 'Values': [name]})
if vpc_id:
params['Filters'].append({'Name': 'vpc-id', 'Values': [vpc_id]})
# Don't filter by description to maintain backwards compatibility
try:
security_groups = sg_exists_with_backoff(client, **params).get('SecurityGroups', [])
all_groups = get_security_groups_with_backoff(client).get('SecurityGroups', [])
except (BotoCoreError, ClientError) as e: # pylint: disable=duplicate-except
module.fail_json_aws(e, msg="Error in describe_security_groups")
if security_groups:
groups = dict((group['GroupId'], group) for group in all_groups)
groups.update(dict((group['GroupName'], group) for group in all_groups))
# maintain backwards compatibility by using the last matching group
return security_groups[-1], groups
return None, {}
def verify_rules_with_descriptions_permitted(client, module, rules, rules_egress):
if not hasattr(client, "update_security_group_rule_descriptions_egress"):
all_rules = rules if rules else [] + rules_egress if rules_egress else []
if any('rule_desc' in rule for rule in all_rules):
module.fail_json(msg="Using rule descriptions requires botocore version >= 1.7.2.")
def main():
argument_spec = dict(
name=dict(),
group_id=dict(),
description=dict(),
vpc_id=dict(),
rules=dict(type='list'),
rules_egress=dict(type='list'),
state=dict(default='present', type='str', choices=['present', 'absent']),
purge_rules=dict(default=True, required=False, type='bool'),
purge_rules_egress=dict(default=True, required=False, type='bool'),
tags=dict(required=False, type='dict', aliases=['resource_tags']),
purge_tags=dict(default=True, required=False, type='bool')
)
module = AnsibleAWSModule(
argument_spec=argument_spec,
supports_check_mode=True,
required_one_of=[['name', 'group_id']],
required_if=[['state', 'present', ['name']]],
)
name = module.params['name']
group_id = module.params['group_id']
description = module.params['description']
vpc_id = module.params['vpc_id']
rules = deduplicate_rules_args(rules_expand_sources(rules_expand_ports(module.params['rules'])))
rules_egress = deduplicate_rules_args(rules_expand_sources(rules_expand_ports(module.params['rules_egress'])))
state = module.params.get('state')
purge_rules = module.params['purge_rules']
purge_rules_egress = module.params['purge_rules_egress']
tags = module.params['tags']
purge_tags = module.params['purge_tags']
if state == 'present' and not description:
module.fail_json(msg='Must provide description when state is present.')
changed = False
client = module.client('ec2')
verify_rules_with_descriptions_permitted(client, module, rules, rules_egress)
group, groups = group_exists(client, module, vpc_id, group_id, name)
group_created_new = not bool(group)
global current_account_id
current_account_id = get_aws_account_id(module)
# Ensure requested group is absent
if state == 'absent':
if group:
# found a match, delete it
try:
if not module.check_mode:
client.delete_security_group(GroupId=group['GroupId'])
except (BotoCoreError, ClientError) as e:
module.fail_json_aws(e, msg="Unable to delete security group '%s'" % group)
else:
group = None
changed = True
else:
# no match found, no changes required
pass
# Ensure requested group is present
elif state == 'present':
if group:
# existing group
if group['Description'] != description:
module.warn("Group description does not match existing group. Descriptions cannot be changed without deleting "
"and re-creating the security group. Try using state=absent to delete, then rerunning this task.")
else:
# no match found, create it
group = create_security_group(client, module, name, description, vpc_id)
changed = True
if tags is not None and group is not None:
current_tags = boto3_tag_list_to_ansible_dict(group.get('Tags', []))
changed |= update_tags(client, module, group['GroupId'], current_tags, tags, purge_tags)
if group:
named_tuple_ingress_list = []
named_tuple_egress_list = []
current_ingress = sum([list(rule_from_group_permission(p)) for p in group['IpPermissions']], [])
current_egress = sum([list(rule_from_group_permission(p)) for p in group['IpPermissionsEgress']], [])
for new_rules, rule_type, named_tuple_rule_list in [(rules, 'in', named_tuple_ingress_list),
(rules_egress, 'out', named_tuple_egress_list)]:
if new_rules is None:
continue
for rule in new_rules:
target_type, target, target_group_created = get_target_from_rule(
module, client, rule, name, group, groups, vpc_id)
changed |= target_group_created
if rule.get('proto', 'tcp') in ('all', '-1', -1):
rule['proto'] = '-1'
rule['from_port'] = None
rule['to_port'] = None
try:
int(rule.get('proto', 'tcp'))
rule['proto'] = to_text(rule.get('proto', 'tcp'))
rule['from_port'] = None
rule['to_port'] = None
except ValueError:
# rule does not use numeric protocol spec
pass
named_tuple_rule_list.append(
Rule(
port_range=(rule['from_port'], rule['to_port']),
protocol=to_text(rule.get('proto', 'tcp')),
target=target, target_type=target_type,
description=rule.get('rule_desc'),
)
)
# List comprehensions for rules to add, rules to modify, and rule ids to determine purging
new_ingress_permissions = [to_permission(r) for r in (set(named_tuple_ingress_list) - set(current_ingress))]
new_egress_permissions = [to_permission(r) for r in (set(named_tuple_egress_list) - set(current_egress))]
present_ingress = list(set(named_tuple_ingress_list).union(set(current_ingress)))
present_egress = list(set(named_tuple_egress_list).union(set(current_egress)))
if module.params.get('rules_egress') is None and 'VpcId' in group:
# when no egress rules are specified and we're in a VPC,
# we add in a default allow all out rule, which was the
# default behavior before egress rules were added
rule = Rule((None, None), '-1', '0.0.0.0/0', 'ipv4', None)
if rule in current_egress:
named_tuple_egress_list.append(rule)
if rule not in current_egress:
current_egress.append(rule)
# List comprehensions for rules to add, rules to modify, and rule ids to determine purging
present_ingress = list(set(named_tuple_ingress_list).union(set(current_ingress)))
present_egress = list(set(named_tuple_egress_list).union(set(current_egress)))