Class: PxModule::PerimeterxS2SValidator

Inherits:
PerimeterxRiskClient show all
Defined in:
lib/perimeterx/internal/validators/perimeter_x_s2s_validator.rb

Instance Attribute Summary

Attributes inherited from PerimeterxRiskClient

#http_client, #px_config

Instance Method Summary collapse

Methods inherited from PerimeterxRiskClient

#format_headers

Constructor Details

#initialize(px_config, http_client) ⇒ PerimeterxS2SValidator

Returns a new instance of PerimeterxS2SValidator.



7
8
9
10
 
# File 'lib/perimeterx/internal/validators/perimeter_x_s2s_validator.rb', line 7

def initialize(px_config, http_client)
  super(px_config, http_client)
  @logger.debug('PerimeterxS2SValidator[initialize]')
end

Instance Method Details

#send_risk_request(px_ctx) ⇒ Object 



12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
 
# File 'lib/perimeterx/internal/validators/perimeter_x_s2s_validator.rb', line 12

def send_risk_request(px_ctx)
  @logger.debug('PerimeterxS2SValidator[send_risk_request]: send_risk_request')

  risk_mode = PxModule::RISK_MODE_ACTIVE
  if @px_config[:module_mode] == PxModule::MONITOR_MODE
    risk_mode = PxModule::RISK_MODE_MONITOR
  end

  request_body = {
    :request => {
      :ip      => px_ctx.context[:ip],
      :headers => format_headers(px_ctx),
      :url     => px_ctx.context[:full_url]
    },
    :additional => {
      :s2s_call_reason => px_ctx.context[:s2s_call_reason],
      :module_version => @px_config[:sdk_name],
      :http_method => px_ctx.context[:http_method],
      :http_version => px_ctx.context[:http_version],
      :risk_mode => risk_mode
    }
  }

  #Check for cookie_origin
  if !px_ctx.context[:px_cookie].empty?
    request_body[:additional][:cookie_origin] = px_ctx.context[:cookie_origin]
  end

  #Override s2s_call_reason in case of mobile error
  if !px_ctx.context[:mobile_error].nil?
    request_body[:additional][:s2s_call_reason] = "mobile_error_#{px_ctx.context[:mobile_error]}"
  end

  #Check for hmac
  @logger.debug("px_ctx cookie_hmac key = #{px_ctx.context.key?(:cookie_hmac)}, value is: #{px_ctx.context[:cookie_hmac]}")
  if px_ctx.context.key?(:cookie_hmac)
    request_body[:additional][:px_cookie_hmac] = px_ctx.context[:cookie_hmac]
  end


  #Check for VID
  if px_ctx.context.key?(:vid)
    request_body[:vid] = px_ctx.context[:vid]
  end

  #Check for uuid
  if px_ctx.context.key?(:uuid)
    request_body[:uuid] = px_ctx.context[:uuid]
  end

  #S2S Call reason
  decode_cookie_reasons = [PxModule::EXPIRED_COOKIE, PxModule::COOKIE_VALIDATION_FAILED]
  if ( px_ctx.context[:s2s_call_reason] == PxModule::COOKIE_DECRYPTION_FAILED )
    @logger.debug("PerimeterxS2SValidator[send_risk_request]: attaching px_orig_cookie to request")
    request_body[:additional][:px_orig_cookie] = px_ctx.context[:px_orig_cookie]
  elsif decode_cookie_reasons.include? (px_ctx.context[:s2s_call_reason])
    if (px_ctx.context.key?(:decoded_cookie))
      request_body[:additional][:px_cookie] = px_ctx.context[:decoded_cookie]
    end
  end

  # Prepare request
  headers = {
      "Authorization" => "Bearer #{@px_config[:auth_token]}" ,
      "Content-Type" => "application/json"
  };

  # Custom risk handler
  risk_start = Time.now
  if (risk_mode == PxModule::ACTIVE_MODE && @px_config.key?(:custom_risk_handler))
    response = @px_config[:custom_risk_handler].call(PxModule::API_V3_RISK, request_body, headers, @px_config[:api_timeout], @px_config[:api_timeout_connection])
  else
    response = @http_client.post(PxModule::API_V3_RISK , request_body, headers, @px_config[:api_timeout], @px_config[:api_timeout_connection])
  end

  # Set risk_rtt
  if(response)
    risk_end = Time.now
    px_ctx.context[:risk_rtt] = ((risk_end-risk_start)*1000).round
  end

  return response
end

#verify(px_ctx) ⇒ Object 



96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
 
# File 'lib/perimeterx/internal/validators/perimeter_x_s2s_validator.rb', line 96

def verify(px_ctx)
  @logger.debug("PerimeterxS2SValidator[verify]")
  response = send_risk_request(px_ctx)
  if (!response)
    px_ctx.context[:pass_reason] = "s2s_timeout"
    return px_ctx
  end
  px_ctx.context[:made_s2s_risk_api_call] = true

  # From here response should be valid, if success or error
  response_body = JSON.parse(response.body, symbolize_names: true);
  # When success
  if (response.code == 200 && response_body.key?(:score) && response_body.key?(:action) && response_body.key?(:status) && response_body[:status] == 0 )
    @logger.debug("PerimeterxS2SValidator[verify]: response ok")
    score = response_body[:score]
    px_ctx.context[:score] = score
    px_ctx.context[:uuid] = response_body[:uuid]
    px_ctx.context[:block_action] = px_ctx.set_block_action_type(response_body[:action])
    if (response_body[:action] == 'j' && response_body.key?(:action_data) && response_body[:action_data].key?(:body))
      px_ctx.context[:block_action_data] = response_body[:action_data][:body]
      px_ctx.context[:blocking_reason] = 'challenge'
    elsif (score >= @px_config[:blocking_score])
      px_ctx.context[:blocking_reason] = 's2s_high_score'
    else
      px_ctx.context[:pass_reason] = 's2s'
    end #end challange or blocking score
  end #end success response

  # When error
  risk_error_status = response_body && response_body.key?(:status) && response_body[:status] == -1
  if(response.code != 200 || risk_error_status)
    @logger.warn("PerimeterxS2SValidator[verify]: bad response, returned code #{response.code} #{risk_error_status ? "risk status: -1" : ""}")
    px_ctx.context[:pass_reason] = 'request_failed'
    px_ctx.context[:uuid] = (!response_body || response_body[:uuid].nil?)? "" : response_body[:uuid]
    px_ctx.context[:s2s_error_msg] = !response_body || response_body[:message].nil? ? 'unknown' : response_body[:message]
  end

  @logger.debug("PerimeterxS2SValidator[verify]: done")
  return px_ctx
end