mirror of
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307 lines
12 KiB
Python
307 lines
12 KiB
Python
# Copyright (c) 2018 Cisco and/or its affiliates.
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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#
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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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DOCUMENTATION = """
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---
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author: Ansible Networking Team
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httpapi : ftd
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short_description: HttpApi Plugin for Cisco ASA Firepower device
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description:
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- This HttpApi plugin provides methods to connect to Cisco ASA firepower
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devices over a HTTP(S)-based api.
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version_added: "2.7"
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options:
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token_path:
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type: str
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description:
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- Specifies the api token path of the FTD device
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default: '/api/fdm/v2/fdm/token'
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vars:
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- name: ansible_httpapi_ftd_token_path
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spec_path:
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type: str
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description:
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- Specifies the api spec path of the FTD device
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default: '/apispec/ngfw.json'
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vars:
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- name: ansible_httpapi_ftd_spec_path
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"""
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import json
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import os
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import re
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from ansible.module_utils.basic import to_text
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from ansible.errors import AnsibleConnectionFailure
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from ansible.module_utils.network.ftd.fdm_swagger_client import FdmSwaggerParser, SpecProp, FdmSwaggerValidator
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from ansible.module_utils.network.ftd.common import HTTPMethod, ResponseParams
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from ansible.module_utils.six.moves.urllib.error import HTTPError
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from ansible.module_utils.six.moves.urllib.parse import urlencode
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from ansible.plugins.httpapi import HttpApiBase
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from urllib3 import encode_multipart_formdata
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from urllib3.fields import RequestField
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from ansible.module_utils.connection import ConnectionError
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BASE_HEADERS = {
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'Content-Type': 'application/json',
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'Accept': 'application/json'
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}
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TOKEN_EXPIRATION_STATUS_CODE = 408
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UNAUTHORIZED_STATUS_CODE = 401
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try:
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from __main__ import display
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except ImportError:
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from ansible.utils.display import Display
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display = Display()
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class HttpApi(HttpApiBase):
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def __init__(self, connection):
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super(HttpApi, self).__init__(connection)
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self.connection = connection
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self.access_token = None
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self.refresh_token = None
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self._api_spec = None
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self._api_validator = None
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self._ignore_http_errors = False
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def login(self, username, password):
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def request_token_payload(username, password):
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return {
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'grant_type': 'password',
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'username': username,
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'password': password
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}
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def refresh_token_payload(refresh_token):
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return {
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'grant_type': 'refresh_token',
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'refresh_token': refresh_token
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}
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if self.refresh_token:
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payload = refresh_token_payload(self.refresh_token)
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elif username and password:
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payload = request_token_payload(username, password)
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else:
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raise AnsibleConnectionFailure('Username and password are required for login in absence of refresh token')
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url = self._get_api_token_path()
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self._display(HTTPMethod.POST, 'login', url)
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response, response_data = self._send_auth_request(
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url, json.dumps(payload), method=HTTPMethod.POST, headers=BASE_HEADERS
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)
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self._display(HTTPMethod.POST, 'login:status_code', response.getcode())
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response = self._response_to_json(self._get_response_value(response_data))
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try:
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self.refresh_token = response['refresh_token']
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self.access_token = response['access_token']
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self.connection._auth = {'Authorization': 'Bearer %s' % self.access_token}
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except KeyError:
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raise ConnectionError(
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'Server returned response without token info during connection authentication: %s' % response)
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def logout(self):
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auth_payload = {
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'grant_type': 'revoke_token',
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'access_token': self.access_token,
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'token_to_revoke': self.refresh_token
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}
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url = self._get_api_token_path()
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self._display(HTTPMethod.POST, 'logout', url)
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response, dummy = self._send_auth_request(url, json.dumps(auth_payload), method=HTTPMethod.POST,
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headers=BASE_HEADERS)
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self._display(HTTPMethod.POST, 'logout:status_code', response.getcode())
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self.refresh_token = None
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self.access_token = None
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def _send_auth_request(self, path, data, **kwargs):
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try:
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self._ignore_http_errors = True
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return self.connection.send(path, data, **kwargs)
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except HTTPError as e:
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# HttpApi connection does not read the error response from HTTPError, so we do it here and wrap it up in
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# ConnectionError, so the actual error message is displayed to the user.
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error_msg = self._response_to_json(to_text(e.read()))
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raise ConnectionError('Server returned an error during authentication request: %s' % error_msg)
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finally:
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self._ignore_http_errors = False
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def update_auth(self, response, response_data):
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# With tokens, authentication should not be checked and updated on each request
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return None
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def send_request(self, url_path, http_method, body_params=None, path_params=None, query_params=None):
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url = construct_url_path(url_path, path_params, query_params)
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data = json.dumps(body_params) if body_params else None
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try:
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self._display(http_method, 'url', url)
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if data:
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self._display(http_method, 'data', data)
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response, response_data = self.connection.send(url, data, method=http_method, headers=BASE_HEADERS)
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value = self._get_response_value(response_data)
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self._display(http_method, 'response', value)
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return {
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ResponseParams.SUCCESS: True,
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ResponseParams.STATUS_CODE: response.getcode(),
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ResponseParams.RESPONSE: self._response_to_json(value)
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}
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# Being invoked via JSON-RPC, this method does not serialize and pass HTTPError correctly to the method caller.
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# Thus, in order to handle non-200 responses, we need to wrap them into a simple structure and pass explicitly.
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except HTTPError as e:
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error_msg = to_text(e.read())
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self._display(http_method, 'error', error_msg)
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return {
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ResponseParams.SUCCESS: False,
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ResponseParams.STATUS_CODE: e.code,
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ResponseParams.RESPONSE: self._response_to_json(error_msg)
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}
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def upload_file(self, from_path, to_url):
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url = construct_url_path(to_url)
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self._display(HTTPMethod.POST, 'upload', url)
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with open(from_path, 'rb') as src_file:
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rf = RequestField('fileToUpload', src_file.read(), os.path.basename(src_file.name))
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rf.make_multipart()
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body, content_type = encode_multipart_formdata([rf])
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headers = dict(BASE_HEADERS)
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headers['Content-Type'] = content_type
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headers['Content-Length'] = len(body)
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dummy, response_data = self.connection.send(url, data=body, method=HTTPMethod.POST, headers=headers)
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value = self._get_response_value(response_data)
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self._display(HTTPMethod.POST, 'upload:response', value)
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return self._response_to_json(value)
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def download_file(self, from_url, to_path, path_params=None):
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url = construct_url_path(from_url, path_params=path_params)
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self._display(HTTPMethod.GET, 'download', url)
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response, response_data = self.connection.send(url, data=None, method=HTTPMethod.GET, headers=BASE_HEADERS)
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if os.path.isdir(to_path):
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filename = extract_filename_from_headers(response.info())
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to_path = os.path.join(to_path, filename)
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with open(to_path, "wb") as output_file:
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output_file.write(response_data.getvalue())
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self._display(HTTPMethod.GET, 'downloaded', to_path)
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def handle_httperror(self, exc):
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is_auth_related_code = exc.code == TOKEN_EXPIRATION_STATUS_CODE or exc.code == UNAUTHORIZED_STATUS_CODE
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if not self._ignore_http_errors and is_auth_related_code:
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self.connection._auth = None
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self.login(self.connection.get_option('remote_user'), self.connection.get_option('password'))
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return True
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# None means that the exception will be passed further to the caller
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return None
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def _display(self, http_method, title, msg=''):
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display.vvvv('REST:%s:%s:%s\n%s' % (http_method, self.connection._url, title, msg))
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@staticmethod
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def _get_response_value(response_data):
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return to_text(response_data.getvalue())
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def _get_api_spec_path(self):
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return self.get_option('spec_path')
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def _get_api_token_path(self):
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return self.get_option('token_path')
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@staticmethod
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def _response_to_json(response_text):
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try:
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return json.loads(response_text) if response_text else {}
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# JSONDecodeError only available on Python 3.5+
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except getattr(json.decoder, 'JSONDecodeError', ValueError):
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raise ConnectionError('Invalid JSON response: %s' % response_text)
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def get_operation_spec(self, operation_name):
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return self.api_spec[SpecProp.OPERATIONS].get(operation_name, None)
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def get_operation_specs_by_model_name(self, model_name):
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if model_name:
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return self.api_spec[SpecProp.MODEL_OPERATIONS].get(model_name, None)
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else:
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return None
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def get_model_spec(self, model_name):
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return self.api_spec[SpecProp.MODELS].get(model_name, None)
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def validate_data(self, operation_name, data):
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return self.api_validator.validate_data(operation_name, data)
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def validate_query_params(self, operation_name, params):
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return self.api_validator.validate_query_params(operation_name, params)
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def validate_path_params(self, operation_name, params):
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return self.api_validator.validate_path_params(operation_name, params)
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@property
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def api_spec(self):
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if self._api_spec is None:
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spec_path_url = self._get_api_spec_path()
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response = self.send_request(url_path=spec_path_url, http_method=HTTPMethod.GET)
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if response[ResponseParams.SUCCESS]:
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self._api_spec = FdmSwaggerParser().parse_spec(response[ResponseParams.RESPONSE])
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else:
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raise ConnectionError('Failed to download API specification. Status code: %s. Response: %s' % (
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response[ResponseParams.STATUS_CODE], response[ResponseParams.RESPONSE]))
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return self._api_spec
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@property
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def api_validator(self):
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if self._api_validator is None:
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self._api_validator = FdmSwaggerValidator(self.api_spec)
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return self._api_validator
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def construct_url_path(path, path_params=None, query_params=None):
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url = path
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if path_params:
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url = url.format(**path_params)
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if query_params:
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url += "?" + urlencode(query_params)
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return url
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def extract_filename_from_headers(response_info):
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content_header_regex = r'attachment; ?filename="?([^"]+)'
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match = re.match(content_header_regex, response_info.get('Content-Disposition'))
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if match:
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return match.group(1)
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else:
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raise ValueError("No appropriate Content-Disposition header is specified.")
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