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Path: /opt/chef/embedded/lib/ruby/gems/2.7.0/gems/winrm-2.3.4/lib/winrm/http/

Viewing File: response_handler.rb

# Copyright 2014 Shawn Neal <sneal@sneal.net>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

require 'rexml/document'
require_relative '../wsmv/soap'

module WinRM
  # Handles the raw WinRM HTTP response. Returns the body as an XML doc
  # or raises the appropriate WinRM error if the response is an error.
  class ResponseHandler
    # @param [String] The raw unparsed response body, if any
    # @param [Integer] The HTTP response status code
    def initialize(response_body, status_code)
      @response_body = response_body
      @status_code = status_code
    end

    # Processes the response from the WinRM service and either returns an XML
    # doc or raises an appropriate error.
    #
    # @returns [REXML::Document] The parsed response body
    def parse_to_xml
      raise_if_error
      response_xml
    end

    private

    def response_xml
      @response_xml ||= REXML::Document.new(@response_body)
    rescue REXML::ParseException => e
      raise WinRMHTTPTransportError.new(
        "Unable to parse WinRM response: #{e.message}", @status_code
      )
    end

    def raise_if_error
      return if @status_code == 200

      raise_if_auth_error
      raise_if_wsman_fault
      raise_if_wmi_error
      raise_if_soap_fault
      raise_transport_error
    end

    def raise_if_auth_error
      raise WinRMAuthorizationError if @status_code == 401
    end

    def raise_if_wsman_fault
      soap_errors = REXML::XPath.match(
        response_xml,
        "//*[local-name() = 'Envelope']/*[local-name() = 'Body']/*[local-name() = 'Fault']/*"
      )
      return if soap_errors.empty?

      fault = REXML::XPath.first(
        soap_errors,
        "//*[local-name() = 'WSManFault']"
      )
      raise WinRMWSManFault.new(fault.to_s, fault.attributes['Code']) unless fault.nil?
    end

    def raise_if_wmi_error
      soap_errors = REXML::XPath.match(
        response_xml,
        "//*[local-name() = 'Envelope']/*[local-name() = 'Body']/*[local-name() = 'Fault']/*"
      )
      return if soap_errors.empty?

      error = REXML::XPath.first(
        soap_errors,
        "//*[local-name() = 'MSFT_WmiError']"
      )
      return if error.nil?

      error_code = REXML::XPath.first(
        error,
        "//*[local-name() = 'error_Code']"
      ).text
      raise WinRMWMIError.new(error.to_s, error_code)
    end

    def raise_if_soap_fault
      soap_errors = REXML::XPath.match(
        response_xml,
        "//*[local-name() = 'Envelope']/*[local-name() = 'Body']/*[local-name() = 'Fault']/*"
      )
      return if soap_errors.empty?

      code = REXML::XPath.first(
        soap_errors,
        "//*[local-name() = 'Code']/*[local-name() = 'Value']/text()"
      )
      subcode = REXML::XPath.first(
        soap_errors,
        "//*[local-name() = 'Subcode']/*[local-name() = 'Value']/text()"
      )
      reason = REXML::XPath.first(
        soap_errors,
        "//*[local-name() = 'Reason']/*[local-name() = 'Text']/text()"
      )

      raise WinRMSoapFault.new(code, subcode, reason) unless
        code.nil? && subcode.nil? && reason.nil?
    end

    def raise_transport_error
      raise WinRMHTTPTransportError.new(
        "Bad HTTP response returned from server. Body(if present):#{@response_body}",
        @status_code
      )
    end
  end
end