Class: Maestrano::Saml::Request

Inherits:
Object
  • Object
show all
Includes:
Preset
Defined in:
lib/maestrano/saml/request.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Preset

included

Constructor Details

#initialize(params = {}, session = {}) ⇒ Request

Returns a new instance of Request.



15
16
17
18
19
 
# File 'lib/maestrano/saml/request.rb', line 15

def initialize(params = {}, session = {})
  self.settings = Maestrano::SSO[self.class.preset].saml_settings
  self.params = params
  self.session = session
end

Instance Attribute Details

#params ⇒ Object

Returns the value of attribute params.



13
14
15
 
# File 'lib/maestrano/saml/request.rb', line 13

def params
  @params
end

#session ⇒ Object

Returns the value of attribute session.



13
14
15
 
# File 'lib/maestrano/saml/request.rb', line 13

def session
  @session
end

#settings ⇒ Object

Returns the value of attribute settings.



13
14
15
 
# File 'lib/maestrano/saml/request.rb', line 13

def settings
  @settings
end

Instance Method Details

#create_authentication_xml_doc(settings) ⇒ Object 



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
 
# File 'lib/maestrano/saml/request.rb', line 45

def create_authentication_xml_doc(settings)
  uuid = "_" + UUID.new.generate
  time = Time.now.utc.strftime("%Y-%m-%dT%H:%M:%SZ")
  # Create AuthnRequest root element using REXML
  request_doc = REXML::Document.new

  root = request_doc.add_element "samlp:AuthnRequest", { "xmlns:samlp" => "urn:oasis:names:tc:SAML:2.0:protocol" }
  root.attributes['ID'] = uuid
  root.attributes['IssueInstant'] = time
  root.attributes['Version'] = "2.0"
  root.attributes['Destination'] = self.settings.idp_sso_target_url unless self.settings.idp_sso_target_url.nil?
  root.attributes['IsPassive'] = self.settings.passive unless self.settings.passive.nil?
  root.attributes['ProtocolBinding'] = self.settings.protocol_binding unless self.settings.protocol_binding.nil?

  # Conditionally defined elements based on settings
  if self.settings.assertion_consumer_service_url != nil
    root.attributes["AssertionConsumerServiceURL"] = self.settings.assertion_consumer_service_url
  end
  if self.settings.issuer != nil
    issuer = root.add_element "saml:Issuer", { "xmlns:saml" => "urn:oasis:names:tc:SAML:2.0:assertion" }
    issuer.text = self.settings.issuer
  end
  if self.settings.name_identifier_format != nil
    root.add_element "samlp:NameIDPolicy", {
        "xmlns:samlp" => "urn:oasis:names:tc:SAML:2.0:protocol",
        # Might want to make AllowCreate a setting?
        "AllowCreate" => "true",
        "Format" => self.settings.name_identifier_format
    }
  end

  # BUG fix here -- if an authn_context is defined, add the tags with an "exact"
  # match required for authentication to succeed.  If this is not defined,
  # the IdP will choose default rules for authentication.  (Shibboleth IdP)
  if self.settings.authn_context != nil
    requested_context = root.add_element "samlp:RequestedAuthnContext", {
      "xmlns:samlp" => "urn:oasis:names:tc:SAML:2.0:protocol",
      "Comparison" => "exact",
    }
    class_ref = requested_context.add_element "saml:AuthnContextClassRef", {
      "xmlns:saml" => "urn:oasis:names:tc:SAML:2.0:assertion",
    }
    class_ref.text = self.settings.authn_context
  end
  request_doc
end

#redirect_url ⇒ Object 



21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
 
# File 'lib/maestrano/saml/request.rb', line 21

def redirect_url
  request_doc = create_authentication_xml_doc(settings)
  request_doc.context[:attribute_quote] = :quote if self.settings.double_quote_xml_attribute_values

  request = ""
  request_doc.write(request)

  request           = Zlib::Deflate.deflate(request, 9)[2..-5] if self.settings.compress_request
  base64_request    = Base64.encode64(request)
  encoded_request   = CGI.escape(base64_request)
  params_prefix     = (self.settings.idp_sso_target_url =~ /\?/) ? '&' : '?'
  request_params    = "#{params_prefix}SAMLRequest=#{encoded_request}"

  self.params.each_pair do |key, value|
    request_params << "&#{key.to_s}=#{CGI.escape(value.to_s)}"
  end
  
  if (request_params !~ /group_id=/) && (group_id = (self.session[:mno_group_uid] || self.session['mno_group_uid']))
    request_params << "&group_id=#{CGI.escape(group_id.to_s)}"
  end

  self.settings.idp_sso_target_url + request_params
end