Пример #1
0
    def enum_group_members(self, groups, group_types):
        """
        Check group membership. Groups reference only the type of element and
        the names of those members. If the element is being created, skip the
        existence check. If the member is not being created, attempt to fetch
        the member and save to cache. Return the cache. Check cache.missing
        before continuing to ensure all required elements are found.
        
        :param list groups: list of groups extracted from elements
        :param list group_types: all supported group types by name
        :rtype: Cache
        """
        to_be_created = {
        }  # dict of element by type: set([names]) to be created.

        # If groups reference elements that are to be created, skip validating.
        # Otherwise check for existence
        for element in self.elements:
            for typeof, values in element.items():
                if typeof not in group_types:
                    to_be_created.setdefault(typeof,
                                             set()).add(values.get('name'))

        cache = Cache()
        for group in groups:
            for _, values in group.items():
                members = {} if values.get(
                    'members') is None else values['members']
                for typeof, member in members.items():
                    for name in member:
                        if name not in to_be_created.get(typeof, set()):
                            cache._add_entry(typeof, name)
        return cache
    def exec_module(self, **kwargs):
        state = kwargs.pop('state', 'present')
        for name, value in kwargs.items():
            setattr(self, name, value)
        
        changed = False
        
        try:
            if state == 'present':
                
                self.cache = Cache()
                
                self.check_elements()
                
                # Any missing dependencies..
                if self.cache.missing:
                    self.fail(msg='Missing dependent elements that are not created within this '
                        'playbook: %s' % self.cache.missing)
                
                deferrals, elements = self.resolve_references(self.elements)
                if self.cache.missing:
                    self.fail(msg='Missing elements that have a dependency, cannot continue: %s'
                        % self.cache.missing)
                 
                if self.check_mode:
                    return self.results
                
                for element in elements:
                    if self.create_or_update_element(element):
                        changed = True

                if deferrals:
                    _, ospf_elements = self.resolve_references(deferrals)
                    for element in ospf_elements:
                        if self.create_or_update_element(element):
                            changed = True
                 
            else:
                # No need to validate elements beyond type and name
                for element in self.elements:
                    for typeof, values in element.items():
                        klazz = lookup_class(typeof)
                        name = values.get('name')
                        if name:
                            try:
                                klazz(name).delete()
                                result = {'name': name, 'type': klazz.typeof, 'action': 'deleted'}
                                changed = True
                            except SMCException as e:
                                result = {'name': name, 'type': klazz.typeof, 'action': 'failed to delete '
                                    'with reason: %s' % str(e)}
                            finally:
                                self.results['state'].append(result)
    
        except SMCException as err:
            self.fail(msg=str(err), exception=traceback.format_exc())
        
        self.results['changed'] = changed
        return self.results 
Пример #3
0
 def exec_module(self, **kwargs):
     state = kwargs.pop('state', 'present')
     for name, value in kwargs.items():
         setattr(self, name, value)
     
     changed = False
     engine = self.fetch_element(Engine)
     if not engine:
         self.fail(msg='Engine specified cannot be found: %s' % self.name)
     
     self.cache = Cache()
     try:
         if state == 'present':
             
             self.validate_elements(engine)
             
             if self.cache.missing:
                 self.fail(msg='Missing element dependencies, cannot continue: %s' % 
                     self.cache.missing)
             
             if self.check_mode:
                 return self.results
             
             if self.update_routing(engine):
                 changed = True
             
             if self.update_antispoofing(engine):
                 changed = True
     
         else:
             # No need to validate an elements type, instead just check for the
             # type and name of the element to remove from the interface routing
             if self.delete_routing(engine):
                 changed = True
     
     except SMCException as e:
         self.fail(msg=str(e))
         
     self.results['changed'] = changed    
     return self.results
Пример #4
0
    def exec_module(self, **kwargs):
        state = kwargs.pop('state', 'present')
        for name, value in kwargs.items():
            setattr(self, name, value)
        
        changed = False
        
        try:            
            # Now that we have valid option settings, we can hit the db
            if self.policy:
                policy = FirewallPolicy.get(self.policy)
            else:
                policy = FirewallSubPolicy.get(self.sub_policy)
            
            if state == 'present':
                
                for rule in self.rules:
                    try:
                        validate_rule_syntax(rule)
                    except Exception as e:
                        self.fail(msg=str(e))
        
                self.cache = Cache()

                for rule in self.rules:
                    # Resolve elements if they exist, calls to SMC could happen here
                    if 'sources' in rule:
                        self.field_resolver(rule.get('sources'), rule_targets)
                    
                    if 'destinations' in rule:
                        self.field_resolver(rule.get('destinations'), rule_targets)
                    
                    if 'services' in rule:
                        self.field_resolver(rule.get('services'), service_targets)
                    
                    if 'vpn_policy' in rule:
                        self.cache._add_entry('vpn', rule.get('vpn_policy'))
                        
                    if 'sub_policy' in rule:
                        self.cache._add_entry('sub_ipv4_fw_policy', rule.get('sub_policy'))
                    
                    if 'authentication_options' in rule:
                        auth = rule['authentication_options']
                        if auth.get('require_auth'):
                            for method in auth.get('methods'):
                                self.cache._add_entry('authentication_service', method)
                            
                            for accounts in ('users', 'groups'):
                                self.cache._add_user_entries(accounts, auth.get(accounts, []))

                if self.cache.missing:
                    self.fail(msg='Missing required elements that are referenced in this '
                        'configuration: %s' % self.cache.missing)
                
                if self.check_mode:
                    return self.results
                
                for rule in self.rules:
                    rule_dict = {}
                
                    if 'log_options' in rule:
                        log_options = LogOptions()
                        _log = rule['log_options']
                        for name, value in log_options.items():
                            if name not in _log:
                                log_options.pop(name)
            
                        log_options.update(rule.get('log_options', {}))
                        rule_dict.update(log_options=log_options)

                    if 'connection_tracking' in rule:
                        connection_tracking = ConnectionTracking()
                        _ct = rule['connection_tracking']
                        for name, value in connection_tracking.items():
                            if name not in _ct:
                                connection_tracking.pop(name)
            
                        connection_tracking.update(rule.get('connection_tracking',{}))
                        rule_dict.update(connection_tracking=connection_tracking)
                    
                    action = Action() # If no action, set to default based on version
                    if 'action' not in rule:
                        action.action = 'allow' if not is_sixdotsix_compat() else ['allow']
                    else:
                        action.action = rule.get('action')
                    
                    if 'inspection_options' in rule:
                        _inspection = rule['inspection_options']
                        for option in inspection_options:
                            if option in _inspection:
                                action[option] = _inspection.get(option)
                    
                    if 'authentication_options' in rule:
                        _auth_options = rule['authentication_options']
                        auth_options = AuthenticationOptions()
                        
                        if _auth_options.get('require_auth'):
                            auth_options.update(methods=[
                                self.get_value('authentication_service', m).href
                                for m in _auth_options.get('methods', [])],
                            require_auth=True)
                            
                            auth_options.update(users=[entry.href
                                for entry in self.cache.get_type('user_element')])

                        rule_dict.update(authentication_options=auth_options)
                    
                    rule_dict.update(action=action)
                    
                    for field in ('sources', 'destinations', 'services'):
                        rule_dict[field] = self.get_values(rule.get(field, None))

                    rule_dict.update(
                        vpn_policy=self.get_value('vpn', rule.get('vpn_policy')),
                        sub_policy=self.get_value('sub_ipv4_fw_policy', rule.get('sub_policy')),
                        mobile_vpn=rule.get('mobile_vpn', False))
                    
                    if 'comment' in rule:
                        rule_dict.update(comment=rule.get('comment'))
                    
                    rule_dict.update(
                        name=rule.get('name'),
                        is_disabled=rule.get('is_disabled', False))
                    
                    if 'tag' not in rule:
                        # If no tag is present, this is a create
                        rule_dict.update(
                            before=rule.get('add_before'),
                            after=rule.get('add_after'))
                        
                        rule = policy.fw_ipv4_access_rules.create(**rule_dict)
                        changed = True
                        self.results['state'].append({
                            'rule': rule.name,
                            'type': rule.typeof,
                            'action': 'created'})
                    
                    else:
                        # Modify as rule has 'tag' defined. Fetch the rule first
                        # by it's tag reference, skip if tag not found
                        target_rule = self.rule_by_tag(policy, rule.get('tag'))
                        if not target_rule:
                            continue

                        changes = compare_rules(target_rule, rule_dict)
                        # Changes have already been merged if any
                        if rule.get('add_after', None):
                            rule_at_pos = self.rule_by_tag(policy, rule.get('add_after'))
                            if rule_at_pos:
                                target_rule.move_rule_after(rule_at_pos)
                                changes.append('add_after')
                        elif rule.get('add_before', None):
                            rule_at_pos = self.rule_by_tag(policy, rule.get('add_before'))
                            if rule_at_pos:
                                target_rule.move_rule_before(rule_at_pos)
                                changes.append('add_before')
                        elif changes:
                            target_rule.save()
                        
                        if changes:
                            changed = True
                            self.results['state'].append({
                                'rule': target_rule.name,
                                'type': target_rule.typeof,
                                'action': 'modified',
                                'changes': changes})
    
            elif state == 'absent':
                for rule in self.rules:
                    if 'tag' in rule:
                        target_rule = self.rule_by_tag(policy, rule.get('tag'))
                        if target_rule:
                            target_rule.delete()
                            changed = True
                            self.results['state'].append({
                                'rule': target_rule.name,
                                'type': target_rule.typeof,
                                'action': 'deleted'})

        except SMCException as err:
            self.fail(msg=str(err), exception=traceback.format_exc())
        
        self.results['changed'] = changed
        return self.results
Пример #5
0
class FirewallRule(ForcepointModuleBase):
    def __init__(self):
        
        self.module_args = dict(
            policy=dict(type='str'),
            sub_policy=dict(type='str'),
            rules=dict(type='list', default=[]),
            state=dict(default='present', type='str', choices=['present', 'absent'])
        )
        
        self.policy = None
        self.sub_policy = None
        self.rules = None
        
        mutually_exclusive = [
            ['policy', 'sub_policy'],
        ]
         
        required_one_of = [
            [ 'policy', 'sub_policy' ]
        ]
        
        self.results = dict(
            changed=False,
            state=[]
        )
        
        super(FirewallRule, self).__init__(self.module_args,
            mutually_exclusive=mutually_exclusive, required_one_of=required_one_of,
            supports_check_mode=True)
    
    def exec_module(self, **kwargs):
        state = kwargs.pop('state', 'present')
        for name, value in kwargs.items():
            setattr(self, name, value)
        
        changed = False
        
        try:            
            # Now that we have valid option settings, we can hit the db
            if self.policy:
                policy = FirewallPolicy.get(self.policy)
            else:
                policy = FirewallSubPolicy.get(self.sub_policy)
            
            if state == 'present':
                
                for rule in self.rules:
                    try:
                        validate_rule_syntax(rule)
                    except Exception as e:
                        self.fail(msg=str(e))
        
                self.cache = Cache()

                for rule in self.rules:
                    # Resolve elements if they exist, calls to SMC could happen here
                    if 'sources' in rule:
                        self.field_resolver(rule.get('sources'), rule_targets)
                    
                    if 'destinations' in rule:
                        self.field_resolver(rule.get('destinations'), rule_targets)
                    
                    if 'services' in rule:
                        self.field_resolver(rule.get('services'), service_targets)
                    
                    if 'vpn_policy' in rule:
                        self.cache._add_entry('vpn', rule.get('vpn_policy'))
                        
                    if 'sub_policy' in rule:
                        self.cache._add_entry('sub_ipv4_fw_policy', rule.get('sub_policy'))
                    
                    if 'authentication_options' in rule:
                        auth = rule['authentication_options']
                        if auth.get('require_auth'):
                            for method in auth.get('methods'):
                                self.cache._add_entry('authentication_service', method)
                            
                            for accounts in ('users', 'groups'):
                                self.cache._add_user_entries(accounts, auth.get(accounts, []))

                if self.cache.missing:
                    self.fail(msg='Missing required elements that are referenced in this '
                        'configuration: %s' % self.cache.missing)
                
                if self.check_mode:
                    return self.results
                
                for rule in self.rules:
                    rule_dict = {}
                
                    if 'log_options' in rule:
                        log_options = LogOptions()
                        _log = rule['log_options']
                        for name, value in log_options.items():
                            if name not in _log:
                                log_options.pop(name)
            
                        log_options.update(rule.get('log_options', {}))
                        rule_dict.update(log_options=log_options)

                    if 'connection_tracking' in rule:
                        connection_tracking = ConnectionTracking()
                        _ct = rule['connection_tracking']
                        for name, value in connection_tracking.items():
                            if name not in _ct:
                                connection_tracking.pop(name)
            
                        connection_tracking.update(rule.get('connection_tracking',{}))
                        rule_dict.update(connection_tracking=connection_tracking)
                    
                    action = Action() # If no action, set to default based on version
                    if 'action' not in rule:
                        action.action = 'allow' if not is_sixdotsix_compat() else ['allow']
                    else:
                        action.action = rule.get('action')
                    
                    if 'inspection_options' in rule:
                        _inspection = rule['inspection_options']
                        for option in inspection_options:
                            if option in _inspection:
                                action[option] = _inspection.get(option)
                    
                    if 'authentication_options' in rule:
                        _auth_options = rule['authentication_options']
                        auth_options = AuthenticationOptions()
                        
                        if _auth_options.get('require_auth'):
                            auth_options.update(methods=[
                                self.get_value('authentication_service', m).href
                                for m in _auth_options.get('methods', [])],
                            require_auth=True)
                            
                            auth_options.update(users=[entry.href
                                for entry in self.cache.get_type('user_element')])

                        rule_dict.update(authentication_options=auth_options)
                    
                    rule_dict.update(action=action)
                    
                    for field in ('sources', 'destinations', 'services'):
                        rule_dict[field] = self.get_values(rule.get(field, None))

                    rule_dict.update(
                        vpn_policy=self.get_value('vpn', rule.get('vpn_policy')),
                        sub_policy=self.get_value('sub_ipv4_fw_policy', rule.get('sub_policy')),
                        mobile_vpn=rule.get('mobile_vpn', False))
                    
                    if 'comment' in rule:
                        rule_dict.update(comment=rule.get('comment'))
                    
                    rule_dict.update(
                        name=rule.get('name'),
                        is_disabled=rule.get('is_disabled', False))
                    
                    if 'tag' not in rule:
                        # If no tag is present, this is a create
                        rule_dict.update(
                            before=rule.get('add_before'),
                            after=rule.get('add_after'))
                        
                        rule = policy.fw_ipv4_access_rules.create(**rule_dict)
                        changed = True
                        self.results['state'].append({
                            'rule': rule.name,
                            'type': rule.typeof,
                            'action': 'created'})
                    
                    else:
                        # Modify as rule has 'tag' defined. Fetch the rule first
                        # by it's tag reference, skip if tag not found
                        target_rule = self.rule_by_tag(policy, rule.get('tag'))
                        if not target_rule:
                            continue

                        changes = compare_rules(target_rule, rule_dict)
                        # Changes have already been merged if any
                        if rule.get('add_after', None):
                            rule_at_pos = self.rule_by_tag(policy, rule.get('add_after'))
                            if rule_at_pos:
                                target_rule.move_rule_after(rule_at_pos)
                                changes.append('add_after')
                        elif rule.get('add_before', None):
                            rule_at_pos = self.rule_by_tag(policy, rule.get('add_before'))
                            if rule_at_pos:
                                target_rule.move_rule_before(rule_at_pos)
                                changes.append('add_before')
                        elif changes:
                            target_rule.save()
                        
                        if changes:
                            changed = True
                            self.results['state'].append({
                                'rule': target_rule.name,
                                'type': target_rule.typeof,
                                'action': 'modified',
                                'changes': changes})
    
            elif state == 'absent':
                for rule in self.rules:
                    if 'tag' in rule:
                        target_rule = self.rule_by_tag(policy, rule.get('tag'))
                        if target_rule:
                            target_rule.delete()
                            changed = True
                            self.results['state'].append({
                                'rule': target_rule.name,
                                'type': target_rule.typeof,
                                'action': 'deleted'})

        except SMCException as err:
            self.fail(msg=str(err), exception=traceback.format_exc())
        
        self.results['changed'] = changed
        return self.results
    
    def rule_by_tag(self, policy, tag):
        """
        Get the rule referenced by it's tag. Tag will be in format
        '1234566.0'. When doing a search_rule, you must omit the part
        after the dot(.) to find the rule.
        
        :param FirewallPolicy policy: policy reference
        :param str tag: tag
        :rtype: Rule or None
        """
        resolved_tag = get_tag(tag)
        if resolved_tag:
            rule = policy.search_rule('@{}'.format(resolved_tag))
            return rule[0] if rule else None
    
    def field_resolver(self, elements, types):
        """
        Field resolver, specific to retrieving network or service level
        elements in different formats. If elements are referencing existing
        elements, they will be loaded in the cache for retrieval.
        
        Format #1, as list (elements are expected to exist):
            - tcp_service:
                - service1
                - service2
        
        Format #2, as dict, only used for specifying any:
            any: true
        
        Format #3, if you have retrieved the rule and the sources, services,
        and destinations are in href format, pass through.
        
            - sources:
                - http://1.1.1.1/elements/host/1
                - http://1.1.1.1/elements/host/2
                ...
    
        .. note:: This is optimal if sources, destinations or services are
            not being changed as it will not result in queries to SMC. This
            is accomplished by not setting `expand` when running the facts
            module as_yaml.
            
        :param list elements: list of elements as parsed from YAML file
        :param dict type_dict: type dictionary for elements that should be
            supported for this run.
        """
        if isinstance(elements, dict):
            if 'any' in elements or 'none' in elements:
                return
            
            for name, value in elements.items():
                if name not in types:
                    self.fail(msg='Invalid element type specified: %s. Valid '
                        'types are: %s' % (name, list(types)))
                if not isinstance(value, list):
                    self.fail(msg='Elements specified for type: %s should be in list '
                        'format, got: %s' % (name, type(value)))
            
            self.cache.add_many([elements])

        elif isinstance(elements, list):
            for entry in elements:
                if not isinstance(entry, string_types) or not entry.startswith('http'):
                    self.fail(msg='List entry is expected to be the raw href of '
                        'the element. Received: %s' % entry)
    
    def get_value(self, typeof, element):
        """
        Get single value from cache
        
        :param str typeof: typeof element by key
        :param str element to fetch
        """
        return self.cache.get(typeof, element)
        
    def get_values(self, elements):
        """
        Get the values for source, destination and service cells. If these
        are not provided, return 'any'.
        """
        if not elements:
            return 'any'
        
        if isinstance(elements, dict):
            if 'any' in elements:
                return 'any'
            elif 'none' in elements:
                return None
        
            # Resolve out of cache, return as Element
            return [self.cache.get(typeof, value)
                for typeof, values in elements.items()
                for value in values]

        elif isinstance(elements, list):
            return elements
Пример #6
0
    def exec_module(self, **kwargs):
        state = kwargs.pop('state', 'present')
        for name, value in kwargs.items():
            setattr(self, name, value)
        
        changed = False
        engine = self.fetch_element(FirewallCluster)
        
        if state == 'present':
            # Resolve dependencies
            if not engine:
                if not self.interfaces:
                    self.fail(msg='You must provide at least one interface '
                        'configuration to create a cluster.')
                
                if not self.primary_mgt:
                    self.fail(msg='You must provide a primary_mgt interface to create '
                        'an engine.')
                
                if not self.cluster_mode:
                    self.fail(msg='You must define a cluster mode to create an engine')
                
                itf = self.check_interfaces()
                
                # Management interface
                if not self.primary_mgt in itf:
                    self.fail(msg='Management interface is not defined. Management was '
                        'specified on interface: %s' % self.primary_mgt)
            
            if engine and self.interfaces and not self.skip_interfaces:
                itf = self.check_interfaces()
            
            cache = Cache()
            
            # SNMP settings
            if self.snmp and self.snmp.get('enabled', True):
                cache._add_entry('snmp_agent', self.snmp.get('snmp_agent', None))
                if cache.missing:
                    self.fail(msg='SNMP configured but the SNMP Agent specified is not '
                        'found: %s' % cache.missing)

            # Only validate BGP if it's specifically set to enabled    
            if self.bgp and self.bgp.get('enabled', True):
                # BGP Profile if specified
                if self.bgp.get('bgp_profile', None):
                    cache._add_entry('bgp_profile', self.bgp['bgp_profile'])
                    if cache.missing:
                        self.fail(msg='A BGP Profile was specified that does not exist: '
                            '%s' % self.bgp['bgp_profile'])
                
                # Get external bgp peers, can be type 'engine' or 'external_bgp_peer'
                # Can also be empty if you don't want to attach a peer.
                peerings = self.bgp.get('bgp_peering', [])
                for peer in peerings:
                    if 'name' not in peer:
                        self.fail(msg='BGP Peering requires a name field to identify the '
                            'BGP Peering element. Peer info provided: %s' % peer)
                    if 'external_bgp_peer' not in peer and 'engine' not in peer:
                        self.fail(msg='Missing the external_bgp_peer or engine parameter '
                            'which defines the next hop for the BGP Peering')
                    if 'external_bgp_peer' in peer:
                        cache._add_entry('external_bgp_peer', peer['external_bgp_peer'])
                    elif 'engine' in peer:
                        cache._add_entry('fw_cluster', peer['engine'])
        
                if cache.missing:
                    self.fail(msg='Missing external BGP Peering elements: %s' % cache.missing)
                
                as_system = self.bgp.get('autonomous_system', {})
                if not engine:
                    # We are trying to enable BGP on a new engine, Autonomous System
                    # is required
                    if not as_system:
                        self.fail(msg='You must specify an Autonomous System when enabling '
                            'BGP on a newly created engine.')
                if as_system:
                    if 'name' not in as_system or 'as_number' not in as_system:
                        self.fail(msg='Autonomous System requires a name and and '
                            'as_number value.')

                spoofing = self.bgp.get('antispoofing_network', {})
                self.validate_antispoofing_network(spoofing)
                cache.add(spoofing)
                if cache.missing:
                    self.fail(msg='Missing elements in antispoofing configuration: %s' %
                        cache.missing)
                    
                networks = self.bgp.get('announced_network', [])
                announced_networks = self.validate_and_extract_announced(networks)
                cache.add(announced_networks)
                if cache.missing:
                    self.fail(msg='Missing elements in announced configuration: %s' % cache.missing)
                
            self.cache = cache
        
        try:
            
            if state == 'present':
                if not engine:

                    interfaces = [vars(intf) for intf in itf]
                    
                    cluster = {'interfaces': interfaces}
                    cluster.update(
                        name=self.name,
                        cluster_mode=self.cluster_mode,
                        primary_mgt=self.primary_mgt,
                        backup_mgt=self.backup_mgt,
                        primary_heartbeat=self.primary_heartbeat,
                        log_server_ref=self.log_server,
                        domain_server_address=self.domain_server_address,
                        default_nat=self.default_nat,
                        enable_antivirus=self.antivirus,
                        enable_gti=self.file_reputation,
                        location_ref=self.location,
                        snmp=self.snmp,
                        comment=self.comment)
                    
                    if self.check_mode:
                        return self.results
                    
                    engine = FirewallCluster.create_bulk(**cluster)
                    changed = True
                    
                else: # Engine exists, check for modifications
                    
                    # Changes made up to check mode are done on the
                    # cached instance of the engine and not sent to SMC
                    if self.update_general(engine):
                        changed = True
                    
                    if self.update_snmp(engine):
                        changed = True
                    
                    if self.cluster_mode and engine.cluster_mode != self.cluster_mode:
                        engine.data.update(cluster_mode=self.cluster_mode)
                        changed = True

                    if self.check_mode:
                        return self.results
                    
                    # Check engine location value
                    if self.update_location(engine):
                        changed = True
                    
                    # First actual engine update happens here
                    if changed:
                        engine.update()
                    
                    # Reset management interfaces before operating on interfaces
                    # in case interfaces are removed that might have previously
                    # been used as interface options (primary mgt, etc)
                    if self.reset_management(engine):
                        changed = True

                    # Set skip interfaces to bypass interface checks
                    if not self.skip_interfaces:
                        self.update_interfaces(engine)
                    
                    # Lastly, delete top level interfaces that are not defined in 
                    # the YAML or added while looping. Only delete if skip_interfaces
                    # was not provided and that delete_undefined_interfaces is set to True
                    if not self.skip_interfaces and self.delete_undefined_interfaces:
                        self.check_for_deletes(engine)
                
                ######                
                # Check for BGP configuration on either newly created engine
                # or on the existing
                ######
                if self.bgp:
                    bgp = engine.bgp
                    enabled = self.bgp.get('enabled', True)
                    if not enabled and bgp.status:
                        bgp.disable()
                        changed = True
                    
                    elif enabled:
                        
                        if self.update_bgp(bgp):

                            autonomous_system, created = get_or_create_asystem(
                                self.bgp.get('autonomous_system'))
                            
                            if created:
                                changed = True
                            
                            bgp.disable() # Reset BGP configuration
                            bgp.enable(
                                autonomous_system,
                                announced_networks=[],
                                antispoofing_networks=self.antispoofing_format(),
                                router_id=self.bgp.get('router_id', ''),
                                bgp_profile=self.cache.get('bgp_profile',
                                    self.bgp.get('bgp_profile', None)))
                            
                            for network in self.announced_network_format():
                                bgp.advertise_network(**network)
                            changed = True
                    
                    if changed:
                        engine.update()
                
                    if enabled:
                        # BGP Peering is last since the BGP configuration may be placed
                        # on interfaces that might have been modified or added. It is
                        # possible that this could fail 
                        peerings = self.bgp.get('bgp_peering', None)
                        if peerings:
                            for peer in peerings:
                                peering, created = get_or_create_bgp_peering(
                                    peer.pop('name'))
                                if created:
                                    changed = True
                                # Update the peering on the interface
                                if self.update_bgp_peering(engine, peering, peer):
                                    changed = True
                    
                if self.tags:
                    if self.add_tags(engine, self.tags):
                        changed = True
                else:
                    if self.clear_tags(engine):
                        changed = True

                self.results['engine'] = engine.data.data
                
            elif state == 'absent':
                if engine:
                    engine.delete()
                    changed = True
        
        except SMCException as err:
                self.fail(msg=str(err), exception=traceback.format_exc())
        
        if not changed and self.results.get('state'):
            changed = True
        self.results['changed'] = changed    
        return self.results
Пример #7
0
class ForcepointEngineRouting(ForcepointModuleBase):
    def __init__(self):
        
        self.module_args = dict(
            name=dict(type='str', required=True),
            bgp_peering=dict(type='list', default=[]),
            ospfv2_area=dict(type='list', default=[]),
            netlink=dict(type='list', default=[]),
            static_route=dict(type='list', default=[]),
            antispoofing_network=dict(type='list', default=[]),
            state=dict(default='present', type='str', choices=['present', 'absent'])
        )
        
        self.results = dict(
            changed=False,
            state=[]
        )
        super(ForcepointEngineRouting, self).__init__(self.module_args, supports_check_mode=True)
    
    def exec_module(self, **kwargs):
        state = kwargs.pop('state', 'present')
        for name, value in kwargs.items():
            setattr(self, name, value)
        
        changed = False
        engine = self.fetch_element(Engine)
        if not engine:
            self.fail(msg='Engine specified cannot be found: %s' % self.name)
        
        self.cache = Cache()
        try:
            if state == 'present':
                
                self.validate_elements(engine)
                
                if self.cache.missing:
                    self.fail(msg='Missing element dependencies, cannot continue: %s' % 
                        self.cache.missing)
                
                if self.check_mode:
                    return self.results
                
                if self.update_routing(engine):
                    changed = True
                
                if self.update_antispoofing(engine):
                    changed = True
        
            else:
                # No need to validate an elements type, instead just check for the
                # type and name of the element to remove from the interface routing
                if self.delete_routing(engine):
                    changed = True
        
        except SMCException as e:
            self.fail(msg=str(e))
            
        self.results['changed'] = changed    
        return self.results
    
    def delete_routing(self, engine):
        """
        Iterate through specified routes and remove and log the state.
        Catch exceptions so overall state can be reported after run.
        
        :rtype: bool
        """
        changed = False
        for element in route_element:
            for it in getattr(self, element):
                if 'interface_id' not in it:
                    break
                try:
                    if 'antispoofing_network' in element:
                        iface = engine.antispoofing.get(it.get('interface_id'))
                        for dest in it.get('destination', []):
                            klazz = lookup_class(dest.get('type'))
                            modified = iface.remove(klazz(dest.get('name')))
                            if modified:
                                self.results['state'].append(
                                    dict(action='deleted',
                                         name=dest.get('name'),
                                         type='antispoofing'))
                                changed = True
                    else:
                        if 'name' not in it:
                            break
                        iface = engine.routing.get(it.get('interface_id'))
                        klazz = lookup_class(element) if element != 'static_route'\
                            else lookup_class('router')    
                        modified = iface.remove_route_gateway(klazz(it.get('name')))
                    
                        if modified:
                            self.results['state'].append(
                                dict(action='deleted',
                                     name=it.get('name'),
                                     type=klazz.typeof))
                            changed = True

                except InterfaceNotFound:
                    self.results['state'].append(
                        dict(action='Cannot find specified interface',
                             name=it.get('interface_id'),
                             type='interface'))
            
                except SMCException as e:
                    self.results['state'].append(
                        dict(action='Failed to delete with reason: %s' % str(e),
                             name=it.get('name'),
                             type=klazz.typeof))
    
        return changed
    
    def update_antispoofing(self, engine):
        """
        Update antispoofing on the engine
        
        :param Engine engine: engine ref
        :return: Whether routing was changed or not
        :rtype: bool
        """
        changed = False
        for it in self.antispoofing_network:
            routing_node = engine.antispoofing.get(it.get('interface_id'))
            for destination in it.get('destination', []):
                element = self.cache.get(
                    destination.get('type'), destination.get('name'))
                modified = routing_node.add(element)
                if modified:
                    self.results['state'].append(
                        {'name': 'interface %s' % it.get('interface_id'),
                         'type': 'antispoofing', 'action': 'updated'})
                    changed = True
        return changed

    def update_routing(self, engine):
        """
        Generic update for each routing element type.
        
        :param Engine engine: engine ref
        :return: Whether routing was changed or not
        :rtype: bool
        """
        mapper = {'bgp_peering': 'add_bgp_peering', 'ospfv2_area': 'add_ospf_area',
                  'netlink': 'add_traffic_handler', 'static_route': 'add_static_route'}
        
        changed = False
        for routing in mapper.keys():
            for it in getattr(self, routing):
                routing_node = engine.routing.get(it.get('interface_id'))
                # Static Routes are expected to have Router elements
                element = self.cache.get(routing, it.get('name')) if 'static_route' \
                    not in routing else self.cache.get('router', it.get('name'))
                
                destinations = []
                if 'destination' in it:
                    destinations = [self.cache.get(dest.get('type'), dest.get('name'))
                        for dest in it.get('destination', [])]
                    # BGP Peering and OSPF areas are non-list destinations
                    if routing in ('ospfv2_area', 'bgp_peering'):
                        destinations = destinations[0]
                        # TODO: Implement unicast ref for OSPF
                        #if 'communication_mode' in it:
                        #    kwargs = {'unicast_ref': self.cache.get(
                        #        dest.get('host'), dest.get('unicast_ref'))}
                    
                # Order of args: element, destination, network
                # destination and network can be None or []
                modified = getattr(routing_node, mapper.get(routing))(
                    element, destinations, it.get('network'))
                
                if modified:
                    self.results['state'].append(
                        {'name': 'interface %s' % it.get('interface_id'),
                         'type': routing, 'action': 'updated'})
                    changed = True
        return changed
    
    def validate_elements(self, engine):
        """
        Validate each of the routing element types. The `add` API for each type
        is essentially the same but the required element types may differ slightly.
        For example, static route 'next hop' elements should be of type Router.
        Populate cache and set missing if elements are not found.
        
        :param Engine engine: engine ref
        :return: None
        """
        for element in route_element:
            if 'antispoofing_network' in element:
                self.validate_antispoofing(engine)
                continue
            for it in getattr(self, element):
                if 'interface_id' not in it or 'name' not in it:
                    self.fail(msg='All routing elements require the name and interface_id '
                              'parameters. Invalid: %s, %s' % (element, it))
                
#                 if element == 'static_route':
#                     self.cache._add_entry('router', it.get('name'))
                #else:
                #    self.cache._add_entry(element, it.get('name'))
                
                if 'destination' in it and isinstance(it['destination'], list):
                    for destinations in it['destination']:
                        if 'name' not in destinations or 'type' not in destinations:
                            self.fail(msg='Destination routing element must have the name '
                                'and type attribute. Invalid: %s, %s' % (element, it))
                        if 'bgp_peering' in element:
                            if destinations.get('type') not in ('external_bgp_peer', 'engine'):
                                self.fail(msg='A BGP peering destination element can only be of type '
                                    'external_bgp_peer or engine. Invalid: %s' % element)
                        elif 'ospfv2_area' in element:
                            if destinations.get('type') != 'ospfv2_interface_settings':
                                self.fail(msg='A OSPF destination element can only be of type '
                                    'ospfv2_interface_settings. Invalid: %s' % element)
                        elif 'netlink' or 'static_route' in element:
                            if destinations.get('type') not in srt_or_netlink_elem:
                                self.fail(msg='A Netlink or static route destination element can '
                                    'only be of type: %s. Invalid: %s' % (
                                        list(srt_or_netlink_elem), element))
                        
                        if element == 'static_route':
                            self.cache._add_entry('router', it.get('name'))
                        
                        # Add to cache for later check
                        self.cache._add_entry(
                            typeof=destinations.get('type'),
                            name=destinations.get('name'))
                
                self.have_interface(
                    engine,
                    interface=it.get('interface_id'),
                    network=it.get('network', None))
    
    def validate_antispoofing(self, engine):
        """
        Validate any antispoofing networks being added to the specified
        engine.
        
        :param Engine engine: engine ref
        """
        for it in self.antispoofing_network:
            if 'interface_id' not in it:
                self.fail(msg='Interface ID is required when defining antispoofing: %s' % it)
            if 'destination' in it and isinstance(it['destination'], list):
                for destination in it['destination']:
                    if 'name' not in destination or 'type' not in destination:
                        self.fail(msg='Name and type is required when defining an '
                            'antispoofing network: %s' % destination)
                    if destination.get('type') not in antispoofing_elem:
                        self.fail(msg='An Antispoofing destination element can only be of type: %s'
                            % list(srt_or_netlink_elem))
                    self.cache._add_entry(destination['type'], destination['name'])

            self.have_interface(
                engine,
                interface=it.get('interface_id'))
                
    def have_interface(self, engine, interface, network=None):
        """
        Check that we have the interface referenced in the element
        
        :param Engine engine: engine ref
        :param str interface: interface ID provided in yaml
        :param str network: optional network if specified. Allows to bind
            to a specified network on an interface with multiple networks
        :return: None
        """
        try:
            iface = engine.routing.get(interface)
            if network:
                if not any(net.ip == network for net in iface):
                    self.cache.missing.append(
                        dict(msg='Cannot find specified network on interface',
                             name=network,
                             type='interface_network'))
                    
        except InterfaceNotFound:
            self.cache.missing.append(
                dict(msg='Cannot find specified interface',
                     name=interface,
                     type='interface'))
Пример #8
0
    def exec_module(self, **kwargs):
        state = kwargs.pop('state', 'present')
        for name, value in kwargs.items():
            setattr(self, name, value)
        
        rbvpn = self.fetch_element(RouteVPN)
        changed = False
        
        if state == 'present':
            
            # Short circuit disable
            if rbvpn and self.enabled is not None and (rbvpn.enabled and not self.enabled):
                rbvpn.disable()
                self.results['changed'] = True
                return self.results
            
            local_engine = self.get_managed_gateway(self.local_gw)
            local_tunnel_interface = self.get_tunnel_interface(
                local_engine, self.local_gw.get('tunnel_interface'))
            local_internal_endpoint = self.get_ipsec_endpoint(
                local_engine, self.local_gw.get('interface_id'),
                address=self.local_gw.get('address'))
            
            if self.remote_gw.get('type', None) != 'external_gateway':
                remote_engine = self.get_managed_gateway(self.remote_gw)
                remote_tunnel_interface = self.get_tunnel_interface(
                    remote_engine, self.remote_gw.get('tunnel_interface'))
                remote_internal_endpoint = self.get_ipsec_endpoint(
                    remote_engine, self.remote_gw.get('interface_id'),
                    address=self.remote_gw.get('address'))
            else:
                # External Gateway
                req = ('name', 'preshared_key', 'external_endpoint')
                for required in req:
                    if required not in self.remote_gw:
                        self.fail(msg='Missing required field for the external endpoint '
                            'configuration: %s' % required)
                
                cache = Cache()
                external_gateway = dict(name=self.remote_gw['name'])
                # External Endpoints are defined in the External Gateway.
                # Build the data structures for a call to ExternalGateway.update_or_create
                ctypes = [] # connection_type element
                for endpoint in self.remote_gw['external_endpoint']:
                    if 'name' not in endpoint or 'address' not in endpoint:
                        self.fail(msg='An external endpoint must have at least a '
                            'name and an address definition.')
                    
                    # SMC version 6.5 requires the connection type element to specify
                    # the role for the given external endpoint
                    if 'connection_type' not in endpoint:
                        self.fail(msg='You must provide the connection_type parameter '
                            'when creating an external endpoint')
                    ctypes.append(endpoint.get('connection_type'))                
                
                cache.add(dict(connection_type=ctypes))
                if cache.missing:
                    self.fail(msg=cache.missing)
                
                # Verify specified VPN Sites exist before continuing
                if 'vpn_site' in self.remote_gw:
                    site_name = self.remote_gw.get('vpn_site', {}).pop('name', None)
                    if not site_name:
                        self.fail(msg='A VPN site requires a name to continue')
                    
                    # Get the elements
                    cache.add(self.remote_gw.get('vpn_site', {}))
                    vpn_site_types = self.remote_gw.get('vpn_site', {}).keys() # Save the VPN site types for retrieval
                    if cache.missing:
                        self.fail(msg='Could not find the specified elements for the '
                            'VPN site configuration: %s' % cache.missing)

                    site_element = [element.href for element_type in vpn_site_types
                        for element in cache.get_type(element_type)]
                    external_gateway.update(
                        vpn_site=[dict(name=site_name, site_element=site_element)])
                
                external_endpoint = []
                for endpoint in self.remote_gw['external_endpoint']:
                    endpoint.update(connection_type_ref=\
                        cache.get('connection_type',endpoint.pop('connection_type')).href)
                    external_endpoint.append(endpoint)
                external_gateway.update(external_endpoint=external_endpoint)
            

        try:
            if state == 'present':
                
                if self.check_mode:
                    return self.results
 
                # Create the tunnel endpoints
                if not rbvpn:
                    local_gateway = TunnelEndpoint.create_ipsec_endpoint(
                        local_engine.vpn.internal_gateway, local_tunnel_interface)
                    
                    # Enable the IPSEC listener on specified interface/s
                    if self.update_ipsec_listener(local_internal_endpoint):
                        changed = True
                    
                    is_external = self.remote_gw.get('type', None) == 'external_gateway'
                    if not is_external:
                        remote_gateway = TunnelEndpoint.create_ipsec_endpoint(
                            remote_engine.vpn.internal_gateway, remote_tunnel_interface)
                        
                        if self.update_ipsec_listener(remote_internal_endpoint):
                            changed = True
                        
                    else: # Update or Create
                        gw, updated, created = ExternalGateway.update_or_create(
                            with_status=True, **external_gateway)
                        remote_gateway = TunnelEndpoint.create_ipsec_endpoint(gw) 
                        if created or updated:
                            changed = True
                    
                    vpn = dict(
                        name=self.name,
                        local_endpoint=local_gateway,
                        remote_endpoint=remote_gateway,
                        preshared_key=self.preshared_key)
                    
                    if is_external:
                        vpn.update(preshared_key=self.remote_gw['preshared_key'])
                    
                    rbvpn = RouteVPN.create_ipsec_tunnel(**vpn)
                    changed = True
                
                else:
                    #TODO: Update or create from top level RBVPN
                    #rbvpn.update_or_create()
                    
                    if rbvpn and self.enabled is not None and (not rbvpn.enabled and self.enabled):
                        rbvpn.enable()
                        changed = True
                    
                    if self.remote_gw.get('type') == 'external_gateway':
                        gw, updated, created = ExternalGateway.update_or_create(
                            with_status=True, **external_gateway)
                    
                        if updated or created:
                            changed = True
                    
                self.results['state'] = rbvpn.data.data
                self.results['changed'] = changed
        
            elif state == 'absent':
                if rbvpn:
                    rbvpn.delete()
                    changed = True
                
        except SMCException as err:
                self.fail(msg=str(err), exception=traceback.format_exc())

        self.results['changed'] = changed        
        return self.results
class ForcepointOSPFElement(ForcepointModuleBase):
    def __init__(self):
        
        self.module_args = dict(
            elements=dict(type='list', required=True),
            state=dict(default='present', type='str', choices=['present', 'absent'])
        )
        self.elements = None
        
        self.results = dict(
            changed=False,
            state=[]
        )
        super(ForcepointOSPFElement, self).__init__(self.module_args, supports_check_mode=True)
        
    def exec_module(self, **kwargs):
        state = kwargs.pop('state', 'present')
        for name, value in kwargs.items():
            setattr(self, name, value)
        
        changed = False
        
        try:
            if state == 'present':
                
                self.cache = Cache()
                
                self.check_elements()
                
                # Any missing dependencies..
                if self.cache.missing:
                    self.fail(msg='Missing dependent elements that are not created within this '
                        'playbook: %s' % self.cache.missing)
                
                deferrals, elements = self.resolve_references(self.elements)
                if self.cache.missing:
                    self.fail(msg='Missing elements that have a dependency, cannot continue: %s'
                        % self.cache.missing)
                 
                if self.check_mode:
                    return self.results
                
                for element in elements:
                    if self.create_or_update_element(element):
                        changed = True

                if deferrals:
                    _, ospf_elements = self.resolve_references(deferrals)
                    for element in ospf_elements:
                        if self.create_or_update_element(element):
                            changed = True
                 
            else:
                # No need to validate elements beyond type and name
                for element in self.elements:
                    for typeof, values in element.items():
                        klazz = lookup_class(typeof)
                        name = values.get('name')
                        if name:
                            try:
                                klazz(name).delete()
                                result = {'name': name, 'type': klazz.typeof, 'action': 'deleted'}
                                changed = True
                            except SMCException as e:
                                result = {'name': name, 'type': klazz.typeof, 'action': 'failed to delete '
                                    'with reason: %s' % str(e)}
                            finally:
                                self.results['state'].append(result)
    
        except SMCException as err:
            self.fail(msg=str(err), exception=traceback.format_exc())
        
        self.results['changed'] = changed
        return self.results 
    
    def serialize_fields(self, typeof, element_values):
        """
        Serialize fields to fit into the update_or_create constructors
        for the relevant types.
        
        :param str typeof: ospf element type
        :param dict element_values: values for dict from yaml
        :return: serialized dict for update_or_create
        """
        new_values = copy.deepcopy(element_values)
        if 'ospfv2_profile' in typeof:
            for entry in new_values.get('redistribution_entry', []):
                if 'filter' in entry:
                    if not entry.get('filter'): # Empty, clear existing
                        entry.update(filter=[])
                    else:
                        for typeof, value in entry.pop('filter', {}).items():
                            # Get element from cache
                            entry.update(filter=
                                self.cache.get(typeof, value[0]))
            
            if 'domain_settings_ref' in element_values:
                new_values.update(domain_settings_ref=
                    self.cache.get_href('ospfv2_domain_settings', element_values.get(
                        'domain_settings_ref')))
                
        elif 'ospfv2_area' in typeof:
            if 'interface_settings_ref' in new_values:
                new_values.update(
                    interface_settings_ref=self.cache.get_href('ospfv2_interface_settings',
                    new_values.pop('interface_settings_ref')))
    
            for _filter in ('inbound_filters', 'outbound_filters'):
                if _filter in new_values:
                    if not new_values.get(_filter): # Empty, clear existing
                        new_values[_filter] = []
                    else:
                        for k, value in new_values.pop(_filter, {}).items():
                            new_values.setdefault(_filter, []).append(
                                self.cache.get_href(k, value[0]))
        return new_values
        
    def create_or_update_element(self, element):
        """
        Create the element. 
        
        :param dict element: the element dict from elements
        """
        changed = False
        for typeof, values in element.items():
            klazz = lookup_class(typeof)
            
            s_values = self.serialize_fields(typeof, values)
            obj, modified, created = klazz.update_or_create(
                with_status=True, **s_values)
            
            if created or modified:
                self.results['state'].append(
                    {'name': obj.name, 'type': obj.typeof, 'action': 'created'
                        if created else 'modified'})
            
            changed = created or modified
        return changed    
        
    def resolve_references(self, elementlist):
        """
        Some elements have a dependency on another element being
        created. Check for those elements here and defer their
        creation until the end if the dependency is also being created.
        
        :rtype: tuple(list, list)
        """
        deferrals, elements = [], []
        for element in elementlist:
            if 'ospfv2_area' in element:
                area = element['ospfv2_area']
                if area.get('interface_settings_ref'):
                    if not self.dependency_being_created(
                        elementlist, 'ospfv2_interface_settings', area['interface_settings_ref']):
                        self.cache._add_entry('ospfv2_interface_settings', area['interface_settings_ref'])
                    else:
                        deferrals.append(element)
                        continue
        
            elif 'ospfv2_profile' in element:
                profile = element['ospfv2_profile']
                if profile.get('domain_settings_ref'):
                    if not self.dependency_being_created(
                        elementlist, 'ospfv2_domain_settings', profile['domain_settings_ref']):
                        self.cache._add_entry('ospfv2_domain_settings', profile['domain_settings_ref'])
                    else:
                        deferrals.append(element)
                        continue

            elements.append(element)
        return deferrals, elements

    def dependency_being_created(self, elementlist, typeof, name):
        """
        Check whether the specified dependency element type is in the
        list to be created or not. If this returns False, the dependency
        should be fetched to verify it exists before creating the element
        that requires it. Element list is the supported element format.
        
        :param list elementlist: list of elements to check for dependency
        :param str typeof: valid bgp element typeof
        :param str name: name to find
        :rtype: bool
        """
        for element in elementlist:
            if typeof in element:
                value = element.get(typeof)
                if value.get('name') == name:
                    return True
        return False

    def check_elements(self):
        """
        Check the elements for validity before continuing. 
        Only return elements that can be processed without being
        deferred due to references.
        
        :rtype: list
        """
        for element in self.elements:
            if not isinstance(element, dict):
                self.fail('OSPF element type must be defined as a dict, received: '
                    '%s, type: %s' % (element, type(element)))

            for ospf_element, values in element.items():
                if ospf_element not in ospf_elements:
                    self.fail(msg='OSPF element type specified is not a supported '
                        'element type, provided: %s. Valid values: %s' %
                        (ospf_element, list(ospf_elements)))
                if not isinstance(values, dict):
                    self.fail(msg='Element values must be of type dict. Received '
                        'values: %s of type: %s' % (values, type(values)))
                
                if 'name' not in values:
                    self.fail(msg='Name is a required field when creating or '
                        'modifying an element. Missing on definition: %s' % ospf_element)
                
                # Check each value against what the constructor requires
                allowed = allowed_args_by_lookup(ospf_element)
                for value in values:
                    if value not in allowed:
                        self.fail(msg='Provided an argument that is not valid for this '
                            'element type. Argument: %s, element type: %s, valid args: %s'
                             % (value, ospf_element, allowed))
                
                # Redistribution entries must exist as they are not created in this module
                if ospf_element == 'ospfv2_profile':
                    for redist in values.get('redistribution_entry', []):
                        for _type, _val in redist.get('filter', {}).items():
                            if _type not in ('ip_access_list', 'route_map'):
                                self.fail(msg='Redistribution entry filters must be either '
                                    'ip_access_list or route_map, received: %s' % _type)
                            self.cache.add(redist['filter'])
                
                elif ospf_element == 'ospfv2_area':
                    for _filter in ('inbound_filters', 'outbound_filters'):
                        if _filter in values:
                            for k, v in values.get(_filter).items():
                                if k not in ('ip_access_list', 'ip_prefix_list'):
                                    self.fail(msg='%s type invalid. Supported filters must '
                                        'be of type ip_access_list or ip_prefix_list. Received '
                                        '%s' % (_filter, k))
                                self.cache.add({k: v})
    def exec_module(self, **kwargs):
        state = kwargs.pop('state', 'present')
        for name, value in kwargs.items():
            setattr(self, name, value)

        ELEMENT_TYPES = element_type_dict()
        GROUP_MEMBER_TYPES = ro_element_type_dict(map_only=True)
        GROUP_MEMBER_TYPES.update(ELEMENT_TYPES)

        try:
            if state == 'present':
                deferred_elements = ('group', 'netlink')
                # Validate elements before proceeding.
                groups, netlinks = [], []
                for element in self.elements:
                    self.is_element_valid(element, ELEMENT_TYPES if 'group' not in\
                        element else GROUP_MEMBER_TYPES)
                    if 'group' in element:
                        groups.append(element)
                    elif 'netlink' in element:
                        netlinks.append(element)

                if groups or netlinks:
                    to_be_created = self.to_be_created_elements()
                    self.cache = Cache()

                if groups:
                    self.enum_group_members(groups, to_be_created)
                    if self.cache.missing:
                        self.fail(
                            msg=
                            'Group members referenced are missing and are not being '
                            'created in this playbook: %s' %
                            self.cache.missing)

                if netlinks:
                    self.enum_netlink_members(netlinks, to_be_created)
                    if self.cache.missing:
                        self.fail(
                            msg=
                            'Netlink elements referenced are missing and are not being '
                            'created in this playbook: %s' %
                            self.cache.missing)

                for element in self.elements:
                    for typeof, _ in element.items():
                        if typeof not in deferred_elements:
                            result = update_or_create(
                                element,
                                ELEMENT_TYPES,
                                check_mode=self.check_mode)
                            self.results['state'].append(result)

                for group in groups:
                    # Run through cache again, entries that exist will not be
                    # added twice but this captures elements that might have been
                    # added earlier by the playbook run
                    _group = copy.deepcopy(group)
                    members = _group.get('group', {}).get('members', {})
                    if members:
                        self.cache.add_many([members])
                        # Add to new members list
                        _members = [
                            self.cache.get(typeof, value)
                            for typeof, member in members.items()
                            for value in member
                        ]
                    else:  # No members defined
                        _members = []

                    _group.setdefault('group', {}).update(members=_members)

                    result = update_or_create(_group,
                                              ELEMENT_TYPES,
                                              check_mode=self.check_mode)
                    self.results['state'].append(result)

                for netlink in netlinks:
                    _netlink = copy.deepcopy(netlink)
                    gateway = _netlink.get('netlink', {}).get('gateway')
                    self.cache._add_entry(gateway.get('type'),
                                          gateway.get('name'))
                    _netlink.setdefault('netlink').update(
                        gateway=self.cache.get(gateway.get('type'),
                                               gateway.get('name')))

                    # Update networks
                    networks = _netlink.get('netlink').get('network')
                    for net in networks:
                        self.cache._add_entry('network', net)
                    _netlink.setdefault('netlink').update(network=[
                        self.cache.get('network', net) for net in networks
                    ])

                    result = update_or_create(_netlink,
                                              ELEMENT_TYPES,
                                              check_mode=self.check_mode)
                    self.results['state'].append(result)

                if self.check_mode:
                    return self.results

            else:
                for element in self.elements:
                    for typeof in element:
                        if typeof not in ELEMENT_TYPES:
                            self.fail(
                                msg=
                                'Element specified is not valid, got: {}, valid: {}'
                                .format(typeof, ELEMENT_TYPES.keys()))
                        else:
                            if not self.check_mode:
                                for elements in element[typeof]:
                                    result = delete_element(
                                        ELEMENT_TYPES.get(typeof)['type'](
                                            elements),
                                        self.ignore_err_if_not_found)
                                    self.results['state'].append(result)

        except SMCException as err:
            self.fail(msg=str(err), exception=traceback.format_exc())

        for results in self.results['state']:
            if 'action' in results:
                self.results['changed'] = True
                break
        return self.results
class NetworkElement(ForcepointModuleBase):
    def __init__(self):

        self.module_args = dict(elements=dict(type='list', required=True),
                                ignore_err_if_not_found=dict(type='bool',
                                                             default=True),
                                state=dict(default='present',
                                           type='str',
                                           choices=['present', 'absent']))

        self.elements = None
        self.ignore_err_if_not_found = None

        self.results = dict(changed=False, state=[])
        super(NetworkElement, self).__init__(self.module_args,
                                             supports_check_mode=True)

    def exec_module(self, **kwargs):
        state = kwargs.pop('state', 'present')
        for name, value in kwargs.items():
            setattr(self, name, value)

        ELEMENT_TYPES = element_type_dict()
        GROUP_MEMBER_TYPES = ro_element_type_dict(map_only=True)
        GROUP_MEMBER_TYPES.update(ELEMENT_TYPES)

        try:
            if state == 'present':
                deferred_elements = ('group', 'netlink')
                # Validate elements before proceeding.
                groups, netlinks = [], []
                for element in self.elements:
                    self.is_element_valid(element, ELEMENT_TYPES if 'group' not in\
                        element else GROUP_MEMBER_TYPES)
                    if 'group' in element:
                        groups.append(element)
                    elif 'netlink' in element:
                        netlinks.append(element)

                if groups or netlinks:
                    to_be_created = self.to_be_created_elements()
                    self.cache = Cache()

                if groups:
                    self.enum_group_members(groups, to_be_created)
                    if self.cache.missing:
                        self.fail(
                            msg=
                            'Group members referenced are missing and are not being '
                            'created in this playbook: %s' %
                            self.cache.missing)

                if netlinks:
                    self.enum_netlink_members(netlinks, to_be_created)
                    if self.cache.missing:
                        self.fail(
                            msg=
                            'Netlink elements referenced are missing and are not being '
                            'created in this playbook: %s' %
                            self.cache.missing)

                for element in self.elements:
                    for typeof, _ in element.items():
                        if typeof not in deferred_elements:
                            result = update_or_create(
                                element,
                                ELEMENT_TYPES,
                                check_mode=self.check_mode)
                            self.results['state'].append(result)

                for group in groups:
                    # Run through cache again, entries that exist will not be
                    # added twice but this captures elements that might have been
                    # added earlier by the playbook run
                    _group = copy.deepcopy(group)
                    members = _group.get('group', {}).get('members', {})
                    if members:
                        self.cache.add_many([members])
                        # Add to new members list
                        _members = [
                            self.cache.get(typeof, value)
                            for typeof, member in members.items()
                            for value in member
                        ]
                    else:  # No members defined
                        _members = []

                    _group.setdefault('group', {}).update(members=_members)

                    result = update_or_create(_group,
                                              ELEMENT_TYPES,
                                              check_mode=self.check_mode)
                    self.results['state'].append(result)

                for netlink in netlinks:
                    _netlink = copy.deepcopy(netlink)
                    gateway = _netlink.get('netlink', {}).get('gateway')
                    self.cache._add_entry(gateway.get('type'),
                                          gateway.get('name'))
                    _netlink.setdefault('netlink').update(
                        gateway=self.cache.get(gateway.get('type'),
                                               gateway.get('name')))

                    # Update networks
                    networks = _netlink.get('netlink').get('network')
                    for net in networks:
                        self.cache._add_entry('network', net)
                    _netlink.setdefault('netlink').update(network=[
                        self.cache.get('network', net) for net in networks
                    ])

                    result = update_or_create(_netlink,
                                              ELEMENT_TYPES,
                                              check_mode=self.check_mode)
                    self.results['state'].append(result)

                if self.check_mode:
                    return self.results

            else:
                for element in self.elements:
                    for typeof in element:
                        if typeof not in ELEMENT_TYPES:
                            self.fail(
                                msg=
                                'Element specified is not valid, got: {}, valid: {}'
                                .format(typeof, ELEMENT_TYPES.keys()))
                        else:
                            if not self.check_mode:
                                for elements in element[typeof]:
                                    result = delete_element(
                                        ELEMENT_TYPES.get(typeof)['type'](
                                            elements),
                                        self.ignore_err_if_not_found)
                                    self.results['state'].append(result)

        except SMCException as err:
            self.fail(msg=str(err), exception=traceback.format_exc())

        for results in self.results['state']:
            if 'action' in results:
                self.results['changed'] = True
                break
        return self.results

    def to_be_created_elements(self):
        """
        Get a dict of all elements that are to be created by this playbook.
        This is used when nested elements are being created that have
        requirements on other elements. This allows nested elements to be
        created alongside of their dependency.
        
        :return: dict of element by type: set([names]) to be created
        :rtype: dict
        """
        nested_element = ('netlink', 'group')
        to_be_created = {
        }  # dict of element by type: set([names]) to be created.
        for element in self.elements:
            for typeof, values in element.items():
                if typeof not in nested_element:
                    to_be_created.setdefault(typeof,
                                             set()).add(values.get('name'))
        return to_be_created

    def enum_group_members(self, groups, pending_elements):
        """
        Check group membership. Groups reference only the type of element and
        the names of those members. If the element is being created, skip the
        existence check. If the member is not being created, attempt to fetch
        the member and save to cache. Return the cache. Check cache.missing
        before continuing to ensure all required elements are found.
        
        :param list groups: list of groups extracted from elements
        :param dict pending_elements: elements waiting to be created
        :return: None
        """
        for group in groups:
            members = group.get('group', {}).get('members', {})
            members = {} if members is None else members
            for typeof, member in members.items():
                for name in member:
                    if name not in pending_elements.get(typeof, set()):
                        self.cache._add_entry(typeof, name)

    def enum_netlink_members(self, netlinks, pending_elements):
        """
        Netlinks reference nested elements gateway and networks. Attempt to
        locate these either in definitions to be created by this playbook or
        existing already in SMC. Populate cache with href and name map and
        catch any missing before continuing.
        
        :return: None
        """
        for netlink in netlinks:
            values = netlink.get('netlink', [])
            for req in ('gateway', 'network'):
                if req not in values:
                    self.fail(
                        msg='Netlink requires a gateway and list of networks, '
                        'received: %s' % values)
            # Add requirements to cache
            gateway = values['gateway']
            if not isinstance(
                    gateway,
                    dict) or 'name' not in gateway or 'type' not in gateway:
                self.fail(
                    msg=
                    'Netlink gateway must be a dict with a name and type key value: %s'
                    % gateway)

            if gateway.get('type') not in ('engine', 'router'):
                self.fail(
                    msg=
                    'Netlink types can only be of type engine or router, got: %s'
                    % gateway.get('type'))

            networks = values['network']
            if not isinstance(networks, list):
                self.fail(
                    msg='Netlink networks must be defined as a list, got: %s' %
                    type(networks))

            if gateway.get('name') not in pending_elements.get(
                    gateway.get('type'), set()):
                self.cache._add_entry(gateway.get('type'), gateway.get('name'))

            for network in networks:
                if network not in pending_elements.get('network', set()):
                    self.cache._add_entry('network', network)

            for attr in ('probe_address', 'domain_server_address'):
                if attr in values and not isinstance(values.get(attr), list):
                    self.fail(msg='%s must be in list format' % attr)
Пример #12
0
    def exec_module(self, **kwargs):
        state = kwargs.pop('state', 'present')
        for name, value in kwargs.items():
            setattr(self, name, value)

        changed = False

        if state == 'present':
            external_gateway = {'name': self.name}

            cache = Cache()
            # External Endpoints are defined in the External Gateway.
            # Build the data structures for a call to ExternalGateway.update_or_create
            ctypes = []  # connection_type element
            for endpoint in self.external_endpoint:
                if 'name' not in endpoint or 'address' not in endpoint:
                    self.fail(msg='An external endpoint must have at least a '
                              'name and an address definition.')

                # SMC version 6.5 provides the ability to add connection_type settings
                if 'connection_type' in endpoint:
                    ctypes.append(endpoint.get('connection_type'))

            cache.add(dict(connection_type=ctypes))
            if cache.missing:
                self.fail(msg=cache.missing)

            if self.vpn_site:
                site_name = self.vpn_site.pop('name', None)
                if not site_name:
                    self.fail(msg='VPN site requires a name attribute')

                vpn_site_types = self.vpn_site.keys(
                )  # Save the VPN site types for retrieval
                cache.add(self.vpn_site)
                if cache.missing:
                    self.fail(
                        msg='Could not find the specified elements for the '
                        'VPN site configuration: %s' % cache.missing)

                site_element = [
                    element.href for element_type in vpn_site_types
                    for element in cache.get_type(element_type)
                ]
                external_gateway.update(
                    vpn_site=[dict(name=site_name, site_element=site_element)])

            external_endpoint = []
            for endpoint in self.external_endpoint:
                if 'connection_type' in endpoint:
                    endpoint.update(connection_type_ref=\
                        cache.get('connection_type',endpoint.pop('connection_type')).href)
                external_endpoint.append(endpoint)
            external_gateway.update(external_endpoint=external_endpoint)

        try:
            if state == 'present':
                gateway, updated, created = ExternalGateway.update_or_create(
                    with_status=True, **external_gateway)

                if created or updated:
                    self.results['state'].append({
                        'name':
                        gateway.name,
                        'type':
                        gateway.typeof,
                        'action':
                        'created' if created else 'modified'
                    })
                    changed = True

                if self.tags:
                    if self.add_tags(gateway, self.tags):
                        changed = True

            elif state == 'absent':
                result = delete_element(ExternalGateway(self.name),
                                        self.ignore_err_if_not_found)

                if 'action' in result:
                    changed = True
                self.results['state'].append(result)

        except SMCException as err:
            self.fail(msg=str(err), exception=traceback.format_exc())

        self.results['changed'] = changed
        return self.results
Пример #13
0
    def exec_module(self, **kwargs):
        state = kwargs.pop('state', 'present')
        for name, value in kwargs.items():
            setattr(self, name, value)

        changed = False

        try:
            # Now that we have valid option settings, we can hit the db
            if self.policy:
                policy = FirewallPolicy.get(self.policy)
            else:
                policy = FirewallSubPolicy.get(self.sub_policy)

            if state == 'present':

                self.cache = Cache()

                for rule in self.rules:
                    if 'tag' not in rule and 'name' not in rule:
                        self.fail(
                            msg='A rule must have either a rule tag or a '
                            'name field: %s' % rule)

                    if 'used_on' in rule:
                        used_on = rule['used_on']
                        if not isinstance(used_on, string_types):
                            self.fail(
                                msg='Used on field should be the name of an '
                                'engine or the value "ANY". Received: %s' %
                                used_on)

                    if all(ntype in rule
                           for ntype in ('static_src_nat', 'dynamic_src_nat')):
                        self.fail(
                            msg=
                            'You must specify either static or dynamic source '
                            'NAT, not both: %s' % rule)

                    # Resolve elements if they exist, calls to SMC could happen here
                    if self.field_resolver(rule.get('sources', {'none': True}),
                                           rule_targets):
                        if 'static_src_nat' in rule:
                            self.fail(
                                msg=
                                'You must specify a source value when configuring '
                                'static_src_nat. ANY and None are not valid: %s'
                                % rule)

                    if self.field_resolver(
                            rule.get('destinations', {'none': True}),
                            rule_targets):
                        if 'static_dst_nat' in rule:
                            self.fail(
                                msg=
                                'You must specify a destination value when configuring '
                                'static_dst_nat. ANY and None are not valid: %s'
                                % rule)

                    if 'services' in rule:
                        self.field_resolver(rule.get('services'),
                                            service_targets)

                    # Evaluate the NAT definitions first as they might have embedded
                    # element references.
                    for nat in nat_type:
                        if nat not in rule:
                            continue

                        if not isinstance(rule[nat], dict):
                            self.fail(
                                msg=
                                'NAT definition must be type dict. Rule was: %s'
                                % rule)

                        nat_value_dict = rule.get(nat)
                        translated_value = nat_value_dict.get(
                            'translated_value')
                        if not translated_value or not isinstance(
                                translated_value, dict):
                            self.fail(
                                msg=
                                'NAT translated value must exist and be in dict '
                                'format. Rule was: %s' % rule)

                        if all(port in translated_value
                               for port in ('min_port', 'max_port')):
                            min_port = translated_value.get('min_port')
                            max_port = translated_value.get('max_port')

                            # Port ranges are not valid for dynamic source NAT
                            if any('-' in port for port in map(str, (min_port, max_port))) and \
                                'dynamic_src_nat' in rule:
                                self.fail(
                                    msg=
                                    'Dynamic source NAT port definitions must be in '
                                    'single port (str or int) format. Ranges are not valid: %s'
                                    % rule)

                            if not is_a_valid_port(min_port, max_port):
                                self.fail(
                                    msg=
                                    'Ports specified for nat type: %r are not valid. '
                                    'Ports for dynamic_src_nat must be between 1-65535 and port '
                                    'ranges used for static_dst_nat must be of equal lengths. '
                                    'Min port: %s, max_port: %s' %
                                    (nat, min_port, max_port))

                        if all(k in translated_value
                               for k in ('name', 'type')):
                            # Add elements to cache if defined
                            self.cache._add_entry(translated_value.get('type'),
                                                  translated_value.get('name'))

                if self.cache.missing:
                    self.fail(
                        msg=
                        'Missing required elements that are referenced in this '
                        'configuration: %s' % self.cache.missing)

                if self.check_mode:
                    return self.results

                # If we've gotten here, cache is populated and we're not missing anything
                for rule in self.rules:
                    rule_dict = {}

                    rule_dict.update(comment=rule.get('comment'),
                                     is_disabled=rule.get(
                                         'is_disabled', False),
                                     name=rule.get('name'))

                    for field in ('sources', 'destinations', 'services'):
                        rule_dict[field] = self.get_values(
                            rule.get(field, None))

                    for nat in nat_type:
                        if nat in rule:
                            rule_dict.update(
                                self.nat_definition(nat, rule.get(nat)))

                    if 'tag' not in rule:
                        rule = policy.fw_ipv4_nat_rules.create(**rule_dict)
                        changed = True
                        self.results['state'].append({
                            'rule': rule.name,
                            'type': rule.typeof,
                            'action': 'created'
                        })
                    else:
                        target_rule = self.rule_by_tag(policy, rule.get('tag'))
                        if not target_rule:
                            continue

                        changes = compare_rules(target_rule, rule_dict)
                        if rule.get('add_after', None):
                            rule_at_pos = self.rule_by_tag(
                                policy, rule.get('add_after'))
                            if rule_at_pos:
                                target_rule.move_rule_after(rule_at_pos)
                                changes.append('add_after')
                        elif rule.get('add_before', None):
                            rule_at_pos = self.rule_by_tag(
                                policy, rule.get('add_before'))
                            if rule_at_pos:
                                target_rule.move_rule_before(rule_at_pos)
                                changes.append('add_before')
                        elif changes:
                            target_rule.save()

                        if changes:
                            changed = True
                            self.results['state'].append({
                                'rule': target_rule.name,
                                'type': target_rule.typeof,
                                'action': 'modified',
                                'changes': changes
                            })

            elif state == 'absent':
                for rule in self.rules:
                    if 'tag' in rule:
                        target_rule = self.rule_by_tag(policy, rule.get('tag'))
                        if target_rule:
                            target_rule.delete()
                            changed = True
                            self.results['state'].append({
                                'rule': target_rule.name,
                                'type': target_rule.typeof,
                                'action': 'deleted'
                            })

        except SMCException as err:
            self.fail(msg=str(err), exception=traceback.format_exc())

        self.results['changed'] = changed
        return self.results
Пример #14
0
class FirewallNATRule(ForcepointModuleBase):
    def __init__(self):
        self.module_args = dict(policy=dict(type='str'),
                                sub_policy=dict(type='str'),
                                rules=dict(type='list', default=[]),
                                state=dict(default='present',
                                           type='str',
                                           choices=['present', 'absent']))

        self.policy = None
        self.sub_policy = None
        self.rules = None

        mutually_exclusive = [
            ['policy', 'sub_policy'],
        ]

        required_one_of = [['policy', 'sub_policy']]

        self.results = dict(changed=False, state=[])

        super(FirewallNATRule,
              self).__init__(self.module_args,
                             mutually_exclusive=mutually_exclusive,
                             required_one_of=required_one_of,
                             supports_check_mode=True)

    def exec_module(self, **kwargs):
        state = kwargs.pop('state', 'present')
        for name, value in kwargs.items():
            setattr(self, name, value)

        changed = False

        try:
            # Now that we have valid option settings, we can hit the db
            if self.policy:
                policy = FirewallPolicy.get(self.policy)
            else:
                policy = FirewallSubPolicy.get(self.sub_policy)

            if state == 'present':

                self.cache = Cache()

                for rule in self.rules:
                    if 'tag' not in rule and 'name' not in rule:
                        self.fail(
                            msg='A rule must have either a rule tag or a '
                            'name field: %s' % rule)

                    if 'used_on' in rule:
                        used_on = rule['used_on']
                        if not isinstance(used_on, string_types):
                            self.fail(
                                msg='Used on field should be the name of an '
                                'engine or the value "ANY". Received: %s' %
                                used_on)

                    if all(ntype in rule
                           for ntype in ('static_src_nat', 'dynamic_src_nat')):
                        self.fail(
                            msg=
                            'You must specify either static or dynamic source '
                            'NAT, not both: %s' % rule)

                    # Resolve elements if they exist, calls to SMC could happen here
                    if self.field_resolver(rule.get('sources', {'none': True}),
                                           rule_targets):
                        if 'static_src_nat' in rule:
                            self.fail(
                                msg=
                                'You must specify a source value when configuring '
                                'static_src_nat. ANY and None are not valid: %s'
                                % rule)

                    if self.field_resolver(
                            rule.get('destinations', {'none': True}),
                            rule_targets):
                        if 'static_dst_nat' in rule:
                            self.fail(
                                msg=
                                'You must specify a destination value when configuring '
                                'static_dst_nat. ANY and None are not valid: %s'
                                % rule)

                    if 'services' in rule:
                        self.field_resolver(rule.get('services'),
                                            service_targets)

                    # Evaluate the NAT definitions first as they might have embedded
                    # element references.
                    for nat in nat_type:
                        if nat not in rule:
                            continue

                        if not isinstance(rule[nat], dict):
                            self.fail(
                                msg=
                                'NAT definition must be type dict. Rule was: %s'
                                % rule)

                        nat_value_dict = rule.get(nat)
                        translated_value = nat_value_dict.get(
                            'translated_value')
                        if not translated_value or not isinstance(
                                translated_value, dict):
                            self.fail(
                                msg=
                                'NAT translated value must exist and be in dict '
                                'format. Rule was: %s' % rule)

                        if all(port in translated_value
                               for port in ('min_port', 'max_port')):
                            min_port = translated_value.get('min_port')
                            max_port = translated_value.get('max_port')

                            # Port ranges are not valid for dynamic source NAT
                            if any('-' in port for port in map(str, (min_port, max_port))) and \
                                'dynamic_src_nat' in rule:
                                self.fail(
                                    msg=
                                    'Dynamic source NAT port definitions must be in '
                                    'single port (str or int) format. Ranges are not valid: %s'
                                    % rule)

                            if not is_a_valid_port(min_port, max_port):
                                self.fail(
                                    msg=
                                    'Ports specified for nat type: %r are not valid. '
                                    'Ports for dynamic_src_nat must be between 1-65535 and port '
                                    'ranges used for static_dst_nat must be of equal lengths. '
                                    'Min port: %s, max_port: %s' %
                                    (nat, min_port, max_port))

                        if all(k in translated_value
                               for k in ('name', 'type')):
                            # Add elements to cache if defined
                            self.cache._add_entry(translated_value.get('type'),
                                                  translated_value.get('name'))

                if self.cache.missing:
                    self.fail(
                        msg=
                        'Missing required elements that are referenced in this '
                        'configuration: %s' % self.cache.missing)

                if self.check_mode:
                    return self.results

                # If we've gotten here, cache is populated and we're not missing anything
                for rule in self.rules:
                    rule_dict = {}

                    rule_dict.update(comment=rule.get('comment'),
                                     is_disabled=rule.get(
                                         'is_disabled', False),
                                     name=rule.get('name'))

                    for field in ('sources', 'destinations', 'services'):
                        rule_dict[field] = self.get_values(
                            rule.get(field, None))

                    for nat in nat_type:
                        if nat in rule:
                            rule_dict.update(
                                self.nat_definition(nat, rule.get(nat)))

                    if 'tag' not in rule:
                        rule = policy.fw_ipv4_nat_rules.create(**rule_dict)
                        changed = True
                        self.results['state'].append({
                            'rule': rule.name,
                            'type': rule.typeof,
                            'action': 'created'
                        })
                    else:
                        target_rule = self.rule_by_tag(policy, rule.get('tag'))
                        if not target_rule:
                            continue

                        changes = compare_rules(target_rule, rule_dict)
                        if rule.get('add_after', None):
                            rule_at_pos = self.rule_by_tag(
                                policy, rule.get('add_after'))
                            if rule_at_pos:
                                target_rule.move_rule_after(rule_at_pos)
                                changes.append('add_after')
                        elif rule.get('add_before', None):
                            rule_at_pos = self.rule_by_tag(
                                policy, rule.get('add_before'))
                            if rule_at_pos:
                                target_rule.move_rule_before(rule_at_pos)
                                changes.append('add_before')
                        elif changes:
                            target_rule.save()

                        if changes:
                            changed = True
                            self.results['state'].append({
                                'rule': target_rule.name,
                                'type': target_rule.typeof,
                                'action': 'modified',
                                'changes': changes
                            })

            elif state == 'absent':
                for rule in self.rules:
                    if 'tag' in rule:
                        target_rule = self.rule_by_tag(policy, rule.get('tag'))
                        if target_rule:
                            target_rule.delete()
                            changed = True
                            self.results['state'].append({
                                'rule': target_rule.name,
                                'type': target_rule.typeof,
                                'action': 'deleted'
                            })

        except SMCException as err:
            self.fail(msg=str(err), exception=traceback.format_exc())

        self.results['changed'] = changed
        return self.results

    def rule_by_tag(self, policy, tag):
        """
        Get the rule referenced by it's tag. Tag will be in format
        '1234566.0'. When doing a search_rule, you must omit the part
        after the dot(.) to find the rule.
        
        :param FirewallPolicy policy: policy reference
        :param str tag: tag
        :rtype: Rule or None
        """
        resolved_tag = get_tag(tag)
        if resolved_tag:
            rule = policy.search_rule('@{}'.format(resolved_tag))
            return rule[0] if rule else None

    def field_resolver(self, elements, types):
        """
        Field resolver, specific to retrieving network or service level
        elements in different formats. If elements are referencing existing
        elements, they will be loaded in the cache for retrieval.
        
        Format #1, as list (elements are expected to exist):
            - tcp_service:
                - service1
                - service2
        
        Format #2, as dict, only used for specifying any:
            any: true
        
        Format #3, if you have retrieved the rule and the sources, services,
        and destinations are in href format, pass through.
        
            - sources:
                - http://1.1.1.1/elements/host/1
                - http://1.1.1.1/elements/host/2
                ...
    
        .. note:: This is optimal if sources, destinations or services are
            not being changed as it will not result in queries to SMC. This
            is accomplished by not setting `expand` when running the facts
            module as_yaml.
        
        Return True if any or none are used. This is necessary to verify for
        NAT rules as source ANY/None or destinations ANY/None are not valid
        when doing static_src_nat or static_dst_nat.
            
        :param list elements: list of elements as parsed from YAML file
        :param dict type_dict: type dictionary for elements that should be
            supported for this run.
        :return: returns True if any or none are set on these fields. Otherwise
            None is returned and elements are added to cache or cache missing
        :rtype: bool or None
        """
        if isinstance(elements, dict):
            if 'any' in elements or 'none' in elements:
                return True

            for name, value in elements.items():
                if name not in types:
                    self.fail(msg='Invalid element type specified: %s. Valid '
                              'types are: %s' % (name, list(types)))
                if not isinstance(value, list):
                    self.fail(
                        msg='Elements specified for type: %s should be in list '
                        'format, got: %s' % (name, type(value)))

            self.cache.add_many([elements])

        elif isinstance(elements, list):
            for entry in elements:
                if not isinstance(
                        entry, string_types) or not entry.startswith('http'):
                    self.fail(
                        msg='List entry is expected to be the raw href of '
                        'the element. Received: %s' % entry)

    def get_values(self, elements):
        """
        Get the values for source, destination and service cells. If these
        are not provided, return 'any'.
        """
        if not elements:
            return 'any'

        if isinstance(elements, dict):
            if 'any' in elements:
                return 'any'
            elif 'none' in elements:
                return None

            # Resolve out of cache, return as Element
            return [
                self.cache.get(typeof, value)
                for typeof, values in elements.items() for value in values
            ]

        elif isinstance(elements, list):
            return elements

    def nat_definition(self, nat_type, data_dict):
        """
        Return a dict for the rule create constructor.
        
        :param str nat_type: nat type retrieved from yaml
        :param dict data_dict: nat dict from yaml definition
        :rtype: dict
        """
        nat_dict = {}
        translated_value = data_dict.get('translated_value')
        if nat_type in ('dynamic_src_nat', 'static_src_nat'):
            # Validate ports first. Range of ports must have equal length
            if 'min_port' in translated_value and 'max_port' in translated_value:
                nat_dict['%s_ports' %
                         nat_type] = (translated_value.get('min_port'),
                                      translated_value.get('max_port'))

        if 'name' in translated_value and 'type' in translated_value:
            nat_dict[nat_type] = self.cache.get(translated_value['type'],
                                                translated_value['name'])
        else:
            nat_dict[nat_type] = translated_value.get('ip_descriptor')
        return nat_dict