#!/usr/bin/python
from __future__ import (absolute_import, division, print_function)
# Copyright 2019-2020 Fortinet, Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

__metaclass__ = type

ANSIBLE_METADATA = {'status': ['preview'],
                    'supported_by': 'community',
                    'metadata_version': '1.1'}

DOCUMENTATION = '''
---
module: fortios_firewall_sniffer
short_description: Configure sniffer in Fortinet's FortiOS and FortiGate.
description:
    - This module is able to configure a FortiGate or FortiOS (FOS) device by allowing the
      user to set and modify firewall feature and sniffer category.
      Examples include all parameters and values need to be adjusted to datasources before usage.
      Tested with FOS v6.0.0
version_added: "2.8"
author:
    - Link Zheng (@chillancezen)
    - Jie Xue (@JieX19)
    - Hongbin Lu (@fgtdev-hblu)
    - Frank Shen (@frankshen01)
    - Miguel Angel Munoz (@mamunozgonzalez)
    - Nicolas Thomas (@thomnico)
notes:
    - Legacy fortiosapi has been deprecated, httpapi is the preferred way to run playbooks

requirements:
    - ansible>=2.9.0
options:
    access_token:
        description:
            - Token-based authentication.
              Generated from GUI of Fortigate.
        type: str
        required: false
    vdom:
        description:
            - Virtual domain, among those defined previously. A vdom is a
              virtual instance of the FortiGate that can be configured and
              used as a different unit.
        type: str
        default: root

    state:
        description:
            - Indicates whether to create or remove the object.
              This attribute was present already in previous version in a deeper level.
              It has been moved out to this outer level.
        type: str
        required: false
        choices:
            - present
            - absent
        version_added: 2.9
    firewall_sniffer:
        description:
            - Configure sniffer.
        default: null
        type: dict
        suboptions:
            state:
                description:
                    - B(Deprecated)
                    - Starting with Ansible 2.9 we recommend using the top-level 'state' parameter.
                    - HORIZONTALLINE
                    - Indicates whether to create or remove the object.
                type: str
                required: false
                choices:
                    - present
                    - absent
            anomaly:
                description:
                    - Configuration method to edit Denial of Service (DoS) anomaly settings.
                type: list
                suboptions:
                    action:
                        description:
                            - Action taken when the threshold is reached.
                        type: str
                        choices:
                            - pass
                            - block
                    log:
                        description:
                            - Enable/disable anomaly logging.
                        type: str
                        choices:
                            - enable
                            - disable
                    name:
                        description:
                            - Anomaly name.
                        required: true
                        type: str
                    quarantine:
                        description:
                            - Quarantine method.
                        type: str
                        choices:
                            - none
                            - attacker
                    quarantine_expiry:
                        description:
                            - Duration of quarantine. (Format ###d##h##m, minimum 1m, maximum 364d23h59m). Requires quarantine set to attacker.
                        type: str
                    quarantine_log:
                        description:
                            - Enable/disable quarantine logging.
                        type: str
                        choices:
                            - disable
                            - enable
                    status:
                        description:
                            - Enable/disable this anomaly.
                        type: str
                        choices:
                            - disable
                            - enable
                    threshold:
                        description:
                            - Anomaly threshold. Number of detected instances per minute that triggers the anomaly action.
                        type: int
                    threshold(default):
                        description:
                            - Number of detected instances per minute which triggers action (1 - 2147483647). Note that each anomaly has a different threshold
                               value assigned to it.
                        type: int
            application_list:
                description:
                    - Name of an existing application list. Source application.list.name.
                type: str
            application_list_status:
                description:
                    - Enable/disable application control profile.
                type: str
                choices:
                    - enable
                    - disable
            av_profile:
                description:
                    - Name of an existing antivirus profile. Source antivirus.profile.name.
                type: str
            av_profile_status:
                description:
                    - Enable/disable antivirus profile.
                type: str
                choices:
                    - enable
                    - disable
            dlp_sensor:
                description:
                    - Name of an existing DLP sensor. Source dlp.sensor.name.
                type: str
            dlp_sensor_status:
                description:
                    - Enable/disable DLP sensor.
                type: str
                choices:
                    - enable
                    - disable
            dsri:
                description:
                    - Enable/disable DSRI.
                type: str
                choices:
                    - enable
                    - disable
            host:
                description:
                    - 'Hosts to filter for in sniffer traffic (Format examples: 1.1.1.1, 2.2.2.0/24, 3.3.3.3/255.255.255.0, 4.4.4.0-4.4.4.240).'
                type: str
            id:
                description:
                    - Sniffer ID.
                required: true
                type: int
            interface:
                description:
                    - Interface name that traffic sniffing will take place on. Source system.interface.name.
                type: str
            ips_dos_status:
                description:
                    - Enable/disable IPS DoS anomaly detection.
                type: str
                choices:
                    - enable
                    - disable
            ips_sensor:
                description:
                    - Name of an existing IPS sensor. Source ips.sensor.name.
                type: str
            ips_sensor_status:
                description:
                    - Enable/disable IPS sensor.
                type: str
                choices:
                    - enable
                    - disable
            ipv6:
                description:
                    - Enable/disable sniffing IPv6 packets.
                type: str
                choices:
                    - enable
                    - disable
            logtraffic:
                description:
                    - Either log all sessions, only sessions that have a security profile applied, or disable all logging for this policy.
                type: str
                choices:
                    - all
                    - utm
                    - disable
            max_packet_count:
                description:
                    - Maximum packet count (1 - 1000000).
                type: int
            non_ip:
                description:
                    - Enable/disable sniffing non-IP packets.
                type: str
                choices:
                    - enable
                    - disable
            port:
                description:
                    - 'Ports to sniff (Format examples: 10, :20, 30:40, 50-, 100-200).'
                type: str
            protocol:
                description:
                    - Integer value for the protocol type as defined by IANA (0 - 255).
                type: str
            scan_botnet_connections:
                description:
                    - Enable/disable scanning of connections to Botnet servers.
                type: str
                choices:
                    - disable
                    - block
                    - monitor
            spamfilter_profile:
                description:
                    - Name of an existing spam filter profile. Source spamfilter.profile.name.
                type: str
            spamfilter_profile_status:
                description:
                    - Enable/disable spam filter.
                type: str
                choices:
                    - enable
                    - disable
            status:
                description:
                    - Enable/disable the active status of the sniffer.
                type: str
                choices:
                    - enable
                    - disable
            vlan:
                description:
                    - List of VLANs to sniff.
                type: str
            webfilter_profile:
                description:
                    - Name of an existing web filter profile. Source webfilter.profile.name.
                type: str
            webfilter_profile_status:
                description:
                    - Enable/disable web filter profile.
                type: str
                choices:
                    - enable
                    - disable
'''

EXAMPLES = '''
- hosts: fortigates
  collections:
    - fortinet.fortios
  connection: httpapi
  vars:
   vdom: "root"
   ansible_httpapi_use_ssl: yes
   ansible_httpapi_validate_certs: no
   ansible_httpapi_port: 443
  tasks:
  - name: Configure sniffer.
    fortios_firewall_sniffer:
      vdom:  "{{ vdom }}"
      state: "present"
      access_token: "<your_own_value>"
      firewall_sniffer:
        anomaly:
         -
            action: "pass"
            log: "enable"
            name: "default_name_6"
            quarantine: "none"
            quarantine_expiry: "<your_own_value>"
            quarantine_log: "disable"
            status: "disable"
            threshold: "11"
            threshold(default): "12"
        application_list: "<your_own_value> (source application.list.name)"
        application_list_status: "enable"
        av_profile: "<your_own_value> (source antivirus.profile.name)"
        av_profile_status: "enable"
        dlp_sensor: "<your_own_value> (source dlp.sensor.name)"
        dlp_sensor_status: "enable"
        dsri: "enable"
        host: "myhostname"
        id:  "21"
        interface: "<your_own_value> (source system.interface.name)"
        ips_dos_status: "enable"
        ips_sensor: "<your_own_value> (source ips.sensor.name)"
        ips_sensor_status: "enable"
        ipv6: "enable"
        logtraffic: "all"
        max_packet_count: "28"
        non_ip: "enable"
        port: "<your_own_value>"
        protocol: "<your_own_value>"
        scan_botnet_connections: "disable"
        spamfilter_profile: "<your_own_value> (source spamfilter.profile.name)"
        spamfilter_profile_status: "enable"
        status: "enable"
        vlan: "<your_own_value>"
        webfilter_profile: "<your_own_value> (source webfilter.profile.name)"
        webfilter_profile_status: "enable"

'''

RETURN = '''
build:
  description: Build number of the fortigate image
  returned: always
  type: str
  sample: '1547'
http_method:
  description: Last method used to provision the content into FortiGate
  returned: always
  type: str
  sample: 'PUT'
http_status:
  description: Last result given by FortiGate on last operation applied
  returned: always
  type: str
  sample: "200"
mkey:
  description: Master key (id) used in the last call to FortiGate
  returned: success
  type: str
  sample: "id"
name:
  description: Name of the table used to fulfill the request
  returned: always
  type: str
  sample: "urlfilter"
path:
  description: Path of the table used to fulfill the request
  returned: always
  type: str
  sample: "webfilter"
revision:
  description: Internal revision number
  returned: always
  type: str
  sample: "17.0.2.10658"
serial:
  description: Serial number of the unit
  returned: always
  type: str
  sample: "FGVMEVYYQT3AB5352"
status:
  description: Indication of the operation's result
  returned: always
  type: str
  sample: "success"
vdom:
  description: Virtual domain used
  returned: always
  type: str
  sample: "root"
version:
  description: Version of the FortiGate
  returned: always
  type: str
  sample: "v5.6.3"

'''

from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.connection import Connection
from ansible_collections.fortinet.fortios.plugins.module_utils.fortios.fortios import FortiOSHandler
from ansible_collections.fortinet.fortios.plugins.module_utils.fortios.fortios import check_legacy_fortiosapi
from ansible_collections.fortinet.fortios.plugins.module_utils.fortimanager.common import FAIL_SOCKET_MSG


def filter_firewall_sniffer_data(json):
    option_list = ['anomaly', 'application_list', 'application_list_status',
                   'av_profile', 'av_profile_status', 'dlp_sensor',
                   'dlp_sensor_status', 'dsri', 'host',
                   'id', 'interface', 'ips_dos_status',
                   'ips_sensor', 'ips_sensor_status', 'ipv6',
                   'logtraffic', 'max_packet_count', 'non_ip',
                   'port', 'protocol', 'scan_botnet_connections',
                   'spamfilter_profile', 'spamfilter_profile_status', 'status',
                   'vlan', 'webfilter_profile', 'webfilter_profile_status']
    dictionary = {}

    for attribute in option_list:
        if attribute in json and json[attribute] is not None:
            dictionary[attribute] = json[attribute]

    return dictionary


def underscore_to_hyphen(data):
    if isinstance(data, list):
        for i, elem in enumerate(data):
            data[i] = underscore_to_hyphen(elem)
    elif isinstance(data, dict):
        new_data = {}
        for k, v in data.items():
            new_data[k.replace('_', '-')] = underscore_to_hyphen(v)
        data = new_data

    return data


def firewall_sniffer(data, fos):
    vdom = data['vdom']
    if 'state' in data and data['state']:
        state = data['state']
    elif 'state' in data['firewall_sniffer'] and data['firewall_sniffer']['state']:
        state = data['firewall_sniffer']['state']
    else:
        state = True
    firewall_sniffer_data = data['firewall_sniffer']
    filtered_data = underscore_to_hyphen(filter_firewall_sniffer_data(firewall_sniffer_data))

    if state == "present":
        return fos.set('firewall',
                       'sniffer',
                       data=filtered_data,
                       vdom=vdom)

    elif state == "absent":
        return fos.delete('firewall',
                          'sniffer',
                          mkey=filtered_data['id'],
                          vdom=vdom)
    else:
        fos._module.fail_json(msg='state must be present or absent!')


def is_successful_status(status):
    return status['status'] == "success" or \
        status['http_method'] == "DELETE" and status['http_status'] == 404


def fortios_firewall(data, fos):

    if data['firewall_sniffer']:
        resp = firewall_sniffer(data, fos)
    else:
        fos._module.fail_json(msg='missing task body: %s' % ('firewall_sniffer'))

    return not is_successful_status(resp), \
        resp['status'] == "success" and \
        (resp['revision_changed'] if 'revision_changed' in resp else True), \
        resp


def main():
    mkeyname = 'id'
    fields = {
        "access_token": {"required": False, "type": "str", "no_log": True},
        "vdom": {"required": False, "type": "str", "default": "root"},
        "state": {"required": False, "type": "str",
                  "choices": ["present", "absent"]},
        "firewall_sniffer": {
            "required": False, "type": "dict", "default": None,
            "options": {
                "state": {"required": False, "type": "str",
                          "choices": ["present", "absent"]},
                "anomaly": {"required": False, "type": "list",
                            "options": {
                                "action": {"required": False, "type": "str",
                                           "choices": ["pass",
                                                       "block"]},
                                "log": {"required": False, "type": "str",
                                        "choices": ["enable",
                                                    "disable"]},
                                "name": {"required": True, "type": "str"},
                                "quarantine": {"required": False, "type": "str",
                                               "choices": ["none",
                                                           "attacker"]},
                                "quarantine_expiry": {"required": False, "type": "str"},
                                "quarantine_log": {"required": False, "type": "str",
                                                   "choices": ["disable",
                                                               "enable"]},
                                "status": {"required": False, "type": "str",
                                           "choices": ["disable",
                                                       "enable"]},
                                "threshold": {"required": False, "type": "int"},
                                "threshold(default)": {"required": False, "type": "int"}
                            }},
                "application_list": {"required": False, "type": "str"},
                "application_list_status": {"required": False, "type": "str",
                                            "choices": ["enable",
                                                        "disable"]},
                "av_profile": {"required": False, "type": "str"},
                "av_profile_status": {"required": False, "type": "str",
                                      "choices": ["enable",
                                                  "disable"]},
                "dlp_sensor": {"required": False, "type": "str"},
                "dlp_sensor_status": {"required": False, "type": "str",
                                      "choices": ["enable",
                                                  "disable"]},
                "dsri": {"required": False, "type": "str",
                         "choices": ["enable",
                                     "disable"]},
                "host": {"required": False, "type": "str"},
                "id": {"required": True, "type": "int"},
                "interface": {"required": False, "type": "str"},
                "ips_dos_status": {"required": False, "type": "str",
                                   "choices": ["enable",
                                               "disable"]},
                "ips_sensor": {"required": False, "type": "str"},
                "ips_sensor_status": {"required": False, "type": "str",
                                      "choices": ["enable",
                                                  "disable"]},
                "ipv6": {"required": False, "type": "str",
                         "choices": ["enable",
                                     "disable"]},
                "logtraffic": {"required": False, "type": "str",
                               "choices": ["all",
                                           "utm",
                                           "disable"]},
                "max_packet_count": {"required": False, "type": "int"},
                "non_ip": {"required": False, "type": "str",
                           "choices": ["enable",
                                       "disable"]},
                "port": {"required": False, "type": "str"},
                "protocol": {"required": False, "type": "str"},
                "scan_botnet_connections": {"required": False, "type": "str",
                                            "choices": ["disable",
                                                        "block",
                                                        "monitor"]},
                "spamfilter_profile": {"required": False, "type": "str"},
                "spamfilter_profile_status": {"required": False, "type": "str",
                                              "choices": ["enable",
                                                          "disable"]},
                "status": {"required": False, "type": "str",
                           "choices": ["enable",
                                       "disable"]},
                "vlan": {"required": False, "type": "str"},
                "webfilter_profile": {"required": False, "type": "str"},
                "webfilter_profile_status": {"required": False, "type": "str",
                                             "choices": ["enable",
                                                         "disable"]}

            }
        }
    }

    check_legacy_fortiosapi()
    module = AnsibleModule(argument_spec=fields,
                           supports_check_mode=False)

    versions_check_result = None
    if module._socket_path:
        connection = Connection(module._socket_path)
        if 'access_token' in module.params:
            connection.set_option('access_token', module.params['access_token'])

        fos = FortiOSHandler(connection, module, mkeyname)

        is_error, has_changed, result = fortios_firewall(module.params, fos)
        versions_check_result = connection.get_system_version()
    else:
        module.fail_json(**FAIL_SOCKET_MSG)

    if versions_check_result and versions_check_result['matched'] is False:
        module.warn("Ansible has detected version mismatch between FortOS system and galaxy, see more details by specifying option -vvv")

    if not is_error:
        if versions_check_result and versions_check_result['matched'] is False:
            module.exit_json(changed=has_changed, version_check_warning=versions_check_result, meta=result)
        else:
            module.exit_json(changed=has_changed, meta=result)
    else:
        if versions_check_result and versions_check_result['matched'] is False:
            module.fail_json(msg="Error in repo", version_check_warning=versions_check_result, meta=result)
        else:
            module.fail_json(msg="Error in repo", meta=result)


if __name__ == '__main__':
    main()
