Class: OneLogin::RubySaml::Response

Inherits:
SamlMessage show all
Includes:
ErrorHandling
Defined in:
lib/onelogin/ruby-saml/response.rb

Overview

SAML2 Authentication Response. SAML Response

Constant Summary collapse

ASSERTION = 
"urn:oasis:names:tc:SAML:2.0:assertion"
PROTOCOL = 
"urn:oasis:names:tc:SAML:2.0:protocol"
DSIG = 
"http://www.w3.org/2000/09/xmldsig#"
XENC = 
"http://www.w3.org/2001/04/xmlenc#"
AVAILABLE_OPTIONS =

Response available options This is not a whitelist to allow people extending OneLogin::RubySaml:Response and pass custom options

[
  :allowed_clock_drift, :check_duplicated_attributes, :matches_request_id, :settings, :skip_audience, :skip_authnstatement, :skip_conditions,
  :skip_destination, :skip_recipient_check, :skip_subject_confirmation
]

Constants inherited from SamlMessage

SamlMessage::BASE64_FORMAT

Instance Attribute Summary collapse

Attributes included from ErrorHandling

#errors

Instance Method Summary collapse

Methods included from ErrorHandling

#append_error, #reset_errors!

Methods inherited from SamlMessage

#id, schema, #valid_saml?, #version

Constructor Details

#initialize(response, options = {}) ⇒ Response

Constructs the SAML Response. A Response Object that is an extension of the SamlMessage class.

Parameters:

  • response (String) —

    A UUEncoded SAML response from the IdP.

  • options (Hash) (defaults to: {}) —

    :settings to provide the OneLogin::RubySaml::Settings object Or some options for the response validation process like skip the conditions validation with the :skip_conditions, or allow a clock_drift when checking dates with :allowed_clock_drift or :matches_request_id that will validate that the response matches the ID of the request, or skip the subject confirmation validation with the :skip_subject_confirmation option or skip the recipient validation of the subject confirmation element with :skip_recipient_check option or skip the audience validation with :skip_audience option

Raises:

  • (ArgumentError) 


52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
 
# File 'lib/onelogin/ruby-saml/response.rb', line 52

def initialize(response, options = {})
  raise ArgumentError.new("Response cannot be nil") if response.nil?

  @errors = []

  @options = options
  @soft = true
  unless options[:settings].nil?
    @settings = options[:settings]
    unless @settings.soft.nil?
      @soft = @settings.soft
    end
  end

  @response = decode_raw_saml(response, settings)
  @document = XMLSecurity::SignedDocument.new(@response, @errors)

  if assertion_encrypted?
    @decrypted_document = generate_decrypted_document
  end
end

Instance Attribute Details

#decrypted_document ⇒ Object (readonly)

Returns the value of attribute decrypted_document.



27
28
29
 
# File 'lib/onelogin/ruby-saml/response.rb', line 27

def decrypted_document
  @decrypted_document
end

#document ⇒ Object (readonly)

Returns the value of attribute document.



26
27
28
 
# File 'lib/onelogin/ruby-saml/response.rb', line 26

def document
  @document
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



29
30
31
 
# File 'lib/onelogin/ruby-saml/response.rb', line 29

def options
  @options
end

#response ⇒ Object (readonly)

Returns the value of attribute response.



28
29
30
 
# File 'lib/onelogin/ruby-saml/response.rb', line 28

def response
  @response
end

#settings ⇒ Object

OneLogin::RubySaml::Settings Toolkit settings



24
25
26
 
# File 'lib/onelogin/ruby-saml/response.rb', line 24

def settings
  @settings
end

#soft ⇒ Object

Returns the value of attribute soft.



31
32
33
 
# File 'lib/onelogin/ruby-saml/response.rb', line 31

def soft
  @soft
end

Instance Method Details

#allowed_clock_drift ⇒ Float

returns the allowed clock drift on timing validation

Returns:

  • (Float) 


341
342
343
 
# File 'lib/onelogin/ruby-saml/response.rb', line 341

def allowed_clock_drift
  options[:allowed_clock_drift].to_f.abs + Float::EPSILON
end

#assertion_encrypted? ⇒ Boolean

Checks if the SAML Response contains or not an EncryptedAssertion element

Returns:

  • (Boolean) —

    True if the SAML Response contains an EncryptedAssertion element



348
349
350
351
352
353
354
 
# File 'lib/onelogin/ruby-saml/response.rb', line 348

def assertion_encrypted?
  ! REXML::XPath.first(
    document,
    "(/p:Response/EncryptedAssertion/)|(/p:Response/a:EncryptedAssertion/)",
    { "p" => PROTOCOL, "a" => ASSERTION }
  ).nil?
end

#assertion_id ⇒ Object 



360
361
362
363
364
365
 
# File 'lib/onelogin/ruby-saml/response.rb', line 360

def assertion_id
  @assertion_id ||= begin
    node = xpath_first_from_signed_assertion("")
    node.nil? ? nil : node.attributes['ID']
  end
end

#attributes ⇒ Attributes

Gets the Attributes from the AttributeStatement element.

All attributes can be iterated over attributes.each or returned as array by attributes.all For backwards compatibility ruby-saml returns by default only the first value for a given attribute with

attributes['name']

To get all of the attributes, use:

attributes.multi('name')

Or turn off the compatibility:

OneLogin::RubySaml::Attributes.single_value_compatibility = false

Now this will return an array:

attributes['name']

Returns:

  • (Attributes) —

    OneLogin::RubySaml::Attributes enumerable collection.

Raises:



147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
 
# File 'lib/onelogin/ruby-saml/response.rb', line 147

def attributes
  @attr_statements ||= begin
    attributes = Attributes.new

    stmt_elements = xpath_from_signed_assertion('/a:AttributeStatement')
    stmt_elements.each do |stmt_element|
      stmt_element.elements.each do |attr_element|
        if attr_element.name == "EncryptedAttribute"
          node = decrypt_attribute(attr_element.dup)
        else
          node = attr_element
        end

        name  = node.attributes["Name"]

        if options[:check_duplicated_attributes] && attributes.include?(name)
          raise ValidationError.new("Found an Attribute element with duplicated Name")
        end

        values = node.elements.collect{|e|
          if (e.elements.nil? || e.elements.size == 0)
            # SAMLCore requires that nil AttributeValues MUST contain xsi:nil XML attribute set to "true" or "1"
            # otherwise the value is to be regarded as empty.
            ["true", "1"].include?(e.attributes['xsi:nil']) ? nil : Utils.element_text(e)
          # explicitly support saml2:NameID with saml2:NameQualifier if supplied in attributes
          # this is useful for allowing eduPersonTargetedId to be passed as an opaque identifier to use to
          # identify the subject in an SP rather than email or other less opaque attributes
          # NameQualifier, if present is prefixed with a "/" to the value
          else
            REXML::XPath.match(e,'a:NameID', { "a" => ASSERTION }).collect do |n|
              base_path = n.attributes['NameQualifier'] ? "#{n.attributes['NameQualifier']}/" : ''
              "#{base_path}#{Utils.element_text(n)}"
            end
          end
        }

        attributes.add(name, values.flatten)
      end
    end
    attributes
  end
end

#audiences ⇒ Array

Returns The Audience elements from the Contitions of the SAML Response.

Returns:

  • (Array) —

    The Audience elements from the Contitions of the SAML Response.



332
333
334
335
336
337
 
# File 'lib/onelogin/ruby-saml/response.rb', line 332

def audiences
  @audiences ||= begin
    nodes = xpath_from_signed_assertion('/a:Conditions/a:AudienceRestriction/a:Audience')
    nodes.map { |node| Utils.element_text(node) }.reject(&:empty?)
  end
end

#conditions ⇒ REXML::Element

Gets the Condition Element of the SAML Response if exists. (returns the first node that matches the supplied xpath)

Returns:

  • (REXML::Element) —

    Conditions Element if exists



258
259
260
 
# File 'lib/onelogin/ruby-saml/response.rb', line 258

def conditions
  @conditions ||= xpath_first_from_signed_assertion('/a:Conditions')
end

#destination ⇒ String|nil

Returns Destination attribute from the SAML Response.

Returns:

  • (String|nil) —

    Destination attribute from the SAML Response.



319
320
321
322
323
324
325
326
327
328
 
# File 'lib/onelogin/ruby-saml/response.rb', line 319

def destination
  @destination ||= begin
    node = REXML::XPath.first(
      document,
      "/p:Response",
      { "p" => PROTOCOL }
    )
    node.nil? ? nil : node.attributes['Destination']
  end
end

#in_response_to ⇒ String|nil

Returns The InResponseTo attribute from the SAML Response.

Returns:

  • (String|nil) —

    The InResponseTo attribute from the SAML Response.



306
307
308
309
310
311
312
313
314
315
 
# File 'lib/onelogin/ruby-saml/response.rb', line 306

def in_response_to
  @in_response_to ||= begin
    node = REXML::XPath.first(
      document,
      "/p:Response",
      { "p" => PROTOCOL }
    )
    node.nil? ? nil : node.attributes['InResponseTo']
  end
end

#is_valid?(collect_errors = false) ⇒ Boolean

Validates the SAML Response with the default values (soft = true)

Parameters:

  • collect_errors (Boolean) (defaults to: false) —

    Stop validation when first error appears or keep validating. (if soft=true)

Returns:

  • (Boolean) —

    TRUE if the SAML Response is valid



78
79
80
 
# File 'lib/onelogin/ruby-saml/response.rb', line 78

def is_valid?(collect_errors = false)
  validate(collect_errors)
end

#issuers ⇒ Array

Gets the Issuers (from Response and Assertion). (returns the first node that matches the supplied xpath from the Response and from the Assertion)

Returns:

  • (Array) —

    Array with the Issuers (REXML::Element)



280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
 
# File 'lib/onelogin/ruby-saml/response.rb', line 280

def issuers
  @issuers ||= begin
    issuer_response_nodes = REXML::XPath.match(
      document,
      "/p:Response/a:Issuer",
      { "p" => PROTOCOL, "a" => ASSERTION }
    )

    unless issuer_response_nodes.size == 1
      error_msg = "Issuer of the Response not found or multiple."
      raise ValidationError.new(error_msg)
    end

    issuer_assertion_nodes = xpath_from_signed_assertion("/a:Issuer")
    unless issuer_assertion_nodes.size == 1
      error_msg = "Issuer of the Assertion not found or multiple."
      raise ValidationError.new(error_msg)
    end

    nodes = issuer_response_nodes + issuer_assertion_nodes
    nodes.map { |node| Utils.element_text(node) }.compact.uniq
  end
end

#name_id ⇒ String Also known as: nameid

Returns the NameID provided by the SAML response from the IdP.

Returns:

  • (String) —

    the NameID provided by the SAML response from the IdP.



84
85
86
 
# File 'lib/onelogin/ruby-saml/response.rb', line 84

def name_id
  @name_id ||= Utils.element_text(name_id_node)
end

#name_id_format ⇒ String Also known as: nameid_format

Returns the NameID Format provided by the SAML response from the IdP.

Returns:

  • (String) —

    the NameID Format provided by the SAML response from the IdP.



92
93
94
95
96
97
 
# File 'lib/onelogin/ruby-saml/response.rb', line 92

def name_id_format
  @name_id_format ||=
    if name_id_node && name_id_node.attribute("Format")
      name_id_node.attribute("Format").value
    end
end

#name_id_namequalifier ⇒ String

Returns the NameID NameQualifier provided by the SAML response from the IdP.

Returns:

  • (String) —

    the NameID NameQualifier provided by the SAML response from the IdP.



112
113
114
115
116
117
 
# File 'lib/onelogin/ruby-saml/response.rb', line 112

def name_id_namequalifier
  @name_id_namequalifier ||=
    if name_id_node && name_id_node.attribute("NameQualifier")
      name_id_node.attribute("NameQualifier").value
    end
end

#name_id_spnamequalifier ⇒ String

Returns the NameID SPNameQualifier provided by the SAML response from the IdP.

Returns:

  • (String) —

    the NameID SPNameQualifier provided by the SAML response from the IdP.



103
104
105
106
107
108
 
# File 'lib/onelogin/ruby-saml/response.rb', line 103

def name_id_spnamequalifier
  @name_id_spnamequalifier ||=
    if name_id_node && name_id_node.attribute("SPNameQualifier")
      name_id_node.attribute("SPNameQualifier").value
    end
end

#not_before ⇒ Time

Gets the NotBefore Condition Element value.

Returns:

  • (Time) —

    The NotBefore value in Time format



265
266
267
 
# File 'lib/onelogin/ruby-saml/response.rb', line 265

def not_before
  @not_before ||= parse_time(conditions, "NotBefore")
end

#not_on_or_after ⇒ Time

Gets the NotOnOrAfter Condition Element value.

Returns:

  • (Time) —

    The NotOnOrAfter value in Time format



272
273
274
 
# File 'lib/onelogin/ruby-saml/response.rb', line 272

def not_on_or_after
  @not_on_or_after ||= parse_time(conditions, "NotOnOrAfter")
end

#response_id ⇒ Object 



356
357
358
 
# File 'lib/onelogin/ruby-saml/response.rb', line 356

def response_id
  id(document)
end

#session_expires_at ⇒ String

Gets the SessionNotOnOrAfter from the AuthnStatement. Could be used to set the local session expiration (expire at latest)

Returns:

  • (String) —

    The SessionNotOnOrAfter value



194
195
196
197
198
199
 
# File 'lib/onelogin/ruby-saml/response.rb', line 194

def session_expires_at
  @expires_at ||= begin
    node = xpath_first_from_signed_assertion('/a:AuthnStatement')
    node.nil? ? nil : parse_time(node, "SessionNotOnOrAfter")
  end
end

#sessionindex ⇒ String

Gets the SessionIndex from the AuthnStatement. Could be used to be stored in the local session in order to be used in a future Logout Request that the SP could send to the IdP, to set what specific session must be deleted

Returns:

  • (String) —

    SessionIndex Value



125
126
127
128
129
130
 
# File 'lib/onelogin/ruby-saml/response.rb', line 125

def sessionindex
  @sessionindex ||= begin
    node = xpath_first_from_signed_assertion('/a:AuthnStatement')
    node.nil? ? nil : node.attributes['SessionIndex']
  end
end

#status_code ⇒ String

Returns StatusCode value from a SAML Response.

Returns:

  • (String) —

    StatusCode value from a SAML Response.



210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
 
# File 'lib/onelogin/ruby-saml/response.rb', line 210

def status_code
  @status_code ||= begin
    nodes = REXML::XPath.match(
      document,
      "/p:Response/p:Status/p:StatusCode",
      { "p" => PROTOCOL }
    )
    if nodes.size == 1
      node = nodes[0]
      code = node.attributes["Value"] if node && node.attributes

      unless code == "urn:oasis:names:tc:SAML:2.0:status:Success"
        nodes = REXML::XPath.match(
          document,
          "/p:Response/p:Status/p:StatusCode/p:StatusCode",
          { "p" => PROTOCOL }
        )
        statuses = nodes.collect do |inner_node|
          inner_node.attributes["Value"]
        end

        code = [code, statuses].flatten.join(" | ")
      end

      code
    end
  end
end

#status_message ⇒ String

Returns the StatusMessage value from a SAML Response.

Returns:

  • (String) —

    the StatusMessage value from a SAML Response.



241
242
243
244
245
246
247
248
249
250
251
252
 
# File 'lib/onelogin/ruby-saml/response.rb', line 241

def status_message
  @status_message ||= begin
    nodes = REXML::XPath.match(
      document,
      "/p:Response/p:Status/p:StatusMessage",
      { "p" => PROTOCOL }
    )
    if nodes.size == 1
      Utils.element_text(nodes.first)
    end
  end
end

#success? ⇒ Boolean

Checks if the Status has the “Success” code

Returns:

  • (Boolean) —

    True if the StatusCode is Sucess



204
205
206
 
# File 'lib/onelogin/ruby-saml/response.rb', line 204

def success?
  status_code == "urn:oasis:names:tc:SAML:2.0:status:Success"
end