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service_provider_test.go
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service_provider_test.go
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package saml
import (
"bytes"
"crypto/rsa"
"crypto/x509"
"encoding/base64"
"encoding/xml"
"html"
"net/http"
"net/url"
"regexp"
"strings"
"testing"
"time"
"gotest.tools/assert"
is "gotest.tools/assert/cmp"
"gotest.tools/golden"
"github.com/beevik/etree"
dsig "github.com/russellhaering/goxmldsig"
"github.com/amboss-mededu/saml/testsaml"
)
type ServiceProviderTest struct {
AuthnRequest []byte
SamlResponse []byte
Key *rsa.PrivateKey
Certificate *x509.Certificate
IDPMetadata []byte
}
// Helper to decode SAML redirect binding requests
// http://play.golang.org/p/sTlV0pCS2y
// x1 := "lJJBj9MwEIX%2FSuR7Y4%2FJRisriVS2Qqq0QNUAB27GmbYWiV08E6D%2FHqeA6AnKdfz85nvPbtYzn8Iev8xIXHyfxkCtmFMw0ZInE%2ByEZNiZfv362ehSmXOKHF0cRbEmwsQ%2BhqcYaJ4w9Zi%2Beofv98%2BtODGfyUgJD3UNVVWV4Zji59JHSXYatbSORLHJO32wi8efG344l5wP6OQ%2FlTEdl4HMWw9%2BRLlgaLnHwSd0LPv%2BrSi2m1b4YaWU0qpStXpUVjmFoEBDBTU8ggUHmIVEM24DsQ3cCq3gYQV6peCdAvMCjIaPotj9ivfSh8GHYytE8QETXQlzfNE1V5d0T1X2d0GieBXTZPnv8mWScxyuUoOBPV9E968iJ2Q7WLaN%2FAnWNW%2Byz3azi6N3l%2F980XGM354SWsZWcJpRdPcDc7KBfMZu5C1B18jbL9b9CAAA%2F%2F8%3D"
// x2, _ := url.QueryUnescape(x1)
// x3, _ := base64.StdEncoding.DecodeString(x2)
// x4, _ := ioutil.ReadAll(flate.NewReader(bytes.NewReader(x3)))
// fmt.Printf("%s\n", x4)
type testRandomReader struct {
Next byte
}
func (tr *testRandomReader) Read(p []byte) (n int, err error) {
for i := 0; i < len(p); i++ {
p[i] = tr.Next
tr.Next += 2
}
return len(p), nil
}
func NewServiceProviderTest(t *testing.T) *ServiceProviderTest {
TimeNow = func() time.Time {
rv, _ := time.Parse("Mon Jan 2 15:04:05 MST 2006", "Mon Dec 1 01:57:09 UTC 2015")
return rv
}
Clock = dsig.NewFakeClockAt(TimeNow())
RandReader = &testRandomReader{}
test := ServiceProviderTest{}
test.AuthnRequest = golden.Get(t, "SP_AuthnRequest")
test.SamlResponse = golden.Get(t, "SP_SamlResponse")
test.Key = mustParsePrivateKey(golden.Get(t, "sp_key.pem")).(*rsa.PrivateKey)
test.Certificate = mustParseCertificate(golden.Get(t, "sp_cert.pem"))
test.IDPMetadata = golden.Get(t, "SP_IDPMetadata")
return &test
}
func TestSPCanSetAuthenticationNameIDFormat(t *testing.T) {
test := NewServiceProviderTest(t)
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("https://15661444.ngrok.io/saml2/metadata"),
AcsURL: mustParseURL("https://15661444.ngrok.io/saml2/acs"),
}
// defaults to "transient"
req, err := s.MakeAuthenticationRequest("", HTTPRedirectBinding)
assert.Check(t, err)
assert.Check(t, is.Equal(string(TransientNameIDFormat), *req.NameIDPolicy.Format))
// explicitly set to "transient"
s.AuthnNameIDFormat = TransientNameIDFormat
req, err = s.MakeAuthenticationRequest("", HTTPRedirectBinding)
assert.Check(t, err)
assert.Check(t, is.Equal(string(TransientNameIDFormat), *req.NameIDPolicy.Format))
// explicitly set to "unspecified"
s.AuthnNameIDFormat = UnspecifiedNameIDFormat
req, err = s.MakeAuthenticationRequest("", HTTPRedirectBinding)
assert.Check(t, err)
assert.Check(t, is.Equal("", *req.NameIDPolicy.Format))
// explicitly set to "emailAddress"
s.AuthnNameIDFormat = EmailAddressNameIDFormat
req, err = s.MakeAuthenticationRequest("", HTTPRedirectBinding)
assert.Check(t, err)
assert.Check(t, is.Equal(string(EmailAddressNameIDFormat), *req.NameIDPolicy.Format))
}
func TestSPCanProduceMetadataWithEncryptionCert(t *testing.T) {
test := NewServiceProviderTest(t)
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("https://example.com/saml2/metadata"),
AcsURL: mustParseURL("https://example.com/saml2/acs"),
SloURL: mustParseURL("https://example.com/saml2/slo"),
IDPMetadata: &EntityDescriptor{},
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
spMetadata, err := xml.MarshalIndent(s.Metadata(), "", " ")
assert.Check(t, err)
golden.Assert(t, string(spMetadata), t.Name()+"_metadata")
}
func TestSPCanProduceMetadataWithBothCerts(t *testing.T) {
test := NewServiceProviderTest(t)
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("https://example.com/saml2/metadata"),
AcsURL: mustParseURL("https://example.com/saml2/acs"),
SloURL: mustParseURL("https://example.com/saml2/slo"),
IDPMetadata: &EntityDescriptor{},
SignatureMethod: "not-empty",
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
spMetadata, err := xml.MarshalIndent(s.Metadata(), "", " ")
assert.Check(t, err)
golden.Assert(t, string(spMetadata), t.Name()+"_metadata")
}
func TestCanProduceMetadataNoCerts(t *testing.T) {
test := NewServiceProviderTest(t)
s := ServiceProvider{
MetadataURL: mustParseURL("https://example.com/saml2/metadata"),
AcsURL: mustParseURL("https://example.com/saml2/acs"),
IDPMetadata: &EntityDescriptor{},
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
spMetadata, err := xml.MarshalIndent(s.Metadata(), "", " ")
assert.Check(t, err)
golden.Assert(t, string(spMetadata), t.Name()+"_metadata")
}
func TestCanProduceMetadataEntityID(t *testing.T) {
test := NewServiceProviderTest(t)
s := ServiceProvider{
EntityID: "spn:11111111-2222-3333-4444-555555555555",
MetadataURL: mustParseURL("https://example.com/saml2/metadata"),
AcsURL: mustParseURL("https://example.com/saml2/acs"),
IDPMetadata: &EntityDescriptor{},
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
spMetadata, err := xml.MarshalIndent(s.Metadata(), "", " ")
assert.Check(t, err)
golden.Assert(t, string(spMetadata), t.Name()+"_metadata")
}
func TestSPCanProduceRedirectRequest(t *testing.T) {
test := NewServiceProviderTest(t)
TimeNow = func() time.Time {
rv, _ := time.Parse("Mon Jan 2 15:04:05.999999999 UTC 2006", "Mon Dec 1 01:31:21.123456789 UTC 2015")
return rv
}
Clock = dsig.NewFakeClockAt(TimeNow())
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("https://15661444.ngrok.io/saml2/metadata"),
AcsURL: mustParseURL("https://15661444.ngrok.io/saml2/acs"),
IDPMetadata: &EntityDescriptor{},
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
redirectURL, err := s.MakeRedirectAuthenticationRequest("relayState")
assert.Check(t, err)
decodedRequest, err := testsaml.ParseRedirectRequest(redirectURL)
assert.Check(t, err)
assert.Check(t, is.Equal("idp.testshib.org",
redirectURL.Host))
assert.Check(t, is.Equal("/idp/profile/SAML2/Redirect/SSO",
redirectURL.Path))
golden.Assert(t, string(decodedRequest), t.Name()+"_decoded_request")
}
func TestSPCanProducePostRequest(t *testing.T) {
test := NewServiceProviderTest(t)
TimeNow = func() time.Time {
rv, _ := time.Parse("Mon Jan 2 15:04:05 UTC 2006", "Mon Dec 1 01:31:21 UTC 2015")
return rv
}
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("https://15661444.ngrok.io/saml2/metadata"),
AcsURL: mustParseURL("https://15661444.ngrok.io/saml2/acs"),
IDPMetadata: &EntityDescriptor{},
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
form, err := s.MakePostAuthenticationRequest("relayState")
assert.Check(t, err)
golden.Assert(t, string(form), t.Name()+"_form")
}
func TestSPCanProduceSignedRequestRedirectBinding(t *testing.T) {
test := NewServiceProviderTest(t)
TimeNow = func() time.Time {
rv, _ := time.Parse("Mon Jan 2 15:04:05.999999999 UTC 2006", "Mon Dec 1 01:31:21.123456789 UTC 2015")
return rv
}
Clock = dsig.NewFakeClockAt(TimeNow())
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("https://15661444.ngrok.io/saml2/metadata"),
AcsURL: mustParseURL("https://15661444.ngrok.io/saml2/acs"),
IDPMetadata: &EntityDescriptor{},
SignatureMethod: dsig.RSASHA1SignatureMethod,
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
redirectURL, err := s.MakeRedirectAuthenticationRequest("relayState")
assert.Check(t, err)
// Signature we check against in the query string was validated with
// https://www.samltool.com/validate_authn_req.php . Once we add
// support for validating signed AuthN requests in the IDP implementation
// we can switch to testing using that.
golden.Assert(t, redirectURL.RawQuery, t.Name()+"_queryString")
decodedRequest, err := testsaml.ParseRedirectRequest(redirectURL)
assert.Check(t, err)
assert.Check(t, is.Equal("idp.testshib.org",
redirectURL.Host))
assert.Check(t, is.Equal("/idp/profile/SAML2/Redirect/SSO",
redirectURL.Path))
// Contains no enveloped signature
golden.Assert(t, string(decodedRequest), t.Name()+"_decodedRequest")
}
func TestSPCanProduceSignedRequestPostBinding(t *testing.T) {
test := NewServiceProviderTest(t)
TimeNow = func() time.Time {
rv, _ := time.Parse("Mon Jan 2 15:04:05.999999999 UTC 2006", "Mon Dec 1 01:31:21.123456789 UTC 2015")
return rv
}
Clock = dsig.NewFakeClockAt(TimeNow())
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("https://15661444.ngrok.io/saml2/metadata"),
AcsURL: mustParseURL("https://15661444.ngrok.io/saml2/acs"),
IDPMetadata: &EntityDescriptor{},
SignatureMethod: dsig.RSASHA1SignatureMethod,
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
htmlForm, err := s.MakePostAuthenticationRequest("relayState")
assert.Check(t, err)
rgx := regexp.MustCompile(`\"SAMLRequest\" value=\"(.*?)\" /><input`)
rs := rgx.FindStringSubmatch(string(htmlForm))
assert.Check(t, len(rs) == 2)
decodedRequest, err := base64.StdEncoding.DecodeString(html.UnescapeString(rs[1]))
assert.Check(t, err)
golden.Assert(t, string(decodedRequest), t.Name()+"_decodedRequest")
}
func TestSPFailToProduceSignedRequestWithBogusSignatureMethod(t *testing.T) {
test := NewServiceProviderTest(t)
TimeNow = func() time.Time {
rv, _ := time.Parse("Mon Jan 2 15:04:05.999999999 UTC 2006", "Mon Dec 1 01:31:21.123456789 UTC 2015")
return rv
}
Clock = dsig.NewFakeClockAt(TimeNow())
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("https://15661444.ngrok.io/saml2/metadata"),
AcsURL: mustParseURL("https://15661444.ngrok.io/saml2/acs"),
IDPMetadata: &EntityDescriptor{},
SignatureMethod: "bogus",
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
_, err = s.MakeRedirectAuthenticationRequest("relayState")
assert.Check(t, is.ErrorContains(err, ""), "invalid signing method bogus")
}
func TestSPCanProducePostLogoutRequest(t *testing.T) {
test := NewServiceProviderTest(t)
TimeNow = func() time.Time {
rv, _ := time.Parse("Mon Jan 2 15:04:05 UTC 2006", "Mon Dec 1 01:31:21 UTC 2015")
return rv
}
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("https://15661444.ngrok.io/saml2/metadata"),
AcsURL: mustParseURL("https://15661444.ngrok.io/saml2/acs"),
IDPMetadata: &EntityDescriptor{},
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
form, err := s.MakePostLogoutRequest("[email protected]", "relayState")
assert.Check(t, err)
golden.Assert(t, string(form), t.Name()+"_form")
}
func TestSPCanProduceRedirectLogoutRequest(t *testing.T) {
test := NewServiceProviderTest(t)
TimeNow = func() time.Time {
rv, _ := time.Parse("Mon Jan 2 15:04:05.999999999 UTC 2006", "Mon Dec 1 01:31:21.123456789 UTC 2015")
return rv
}
Clock = dsig.NewFakeClockAt(TimeNow())
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("https://15661444.ngrok.io/saml2/metadata"),
AcsURL: mustParseURL("https://15661444.ngrok.io/saml2/acs"),
IDPMetadata: &EntityDescriptor{},
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
redirectURL, err := s.MakeRedirectLogoutRequest("[email protected]", "relayState")
assert.Check(t, err)
decodedRequest, err := testsaml.ParseRedirectRequest(redirectURL)
assert.Check(t, err)
assert.Check(t, is.Equal("idp.testshib.org",
redirectURL.Host))
assert.Check(t, is.Equal("/idp/profile/SAML2/Redirect/SLO",
redirectURL.Path))
golden.Assert(t, string(decodedRequest), t.Name()+"_decodedRequest")
}
func TestSPCanProducePostLogoutResponse(t *testing.T) {
test := NewServiceProviderTest(t)
TimeNow = func() time.Time {
rv, _ := time.Parse("Mon Jan 2 15:04:05 UTC 2006", "Mon Dec 1 01:31:21 UTC 2015")
return rv
}
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("https://15661444.ngrok.io/saml2/metadata"),
AcsURL: mustParseURL("https://15661444.ngrok.io/saml2/acs"),
IDPMetadata: &EntityDescriptor{},
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
form, err := s.MakePostLogoutResponse("id-d40c15c104b52691eccf0a2a5c8a15595be75423", "relayState")
assert.Check(t, err)
golden.Assert(t, string(form), t.Name()+"_form")
}
func TestSPCanProduceRedirectLogoutResponse(t *testing.T) {
test := NewServiceProviderTest(t)
TimeNow = func() time.Time {
rv, _ := time.Parse("Mon Jan 2 15:04:05.999999999 UTC 2006", "Mon Dec 1 01:31:21.123456789 UTC 2015")
return rv
}
Clock = dsig.NewFakeClockAt(TimeNow())
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("https://15661444.ngrok.io/saml2/metadata"),
AcsURL: mustParseURL("https://15661444.ngrok.io/saml2/acs"),
IDPMetadata: &EntityDescriptor{},
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
redirectURL, err := s.MakeRedirectLogoutResponse("id-d40c15c104b52691eccf0a2a5c8a15595be75423", "relayState")
assert.Check(t, err)
decodedResponse, err := testsaml.ParseRedirectResponse(redirectURL)
assert.Check(t, err)
golden.Assert(t, string(decodedResponse), t.Name()+"_decodedResponse")
}
func TestSPCanHandleOneloginResponse(t *testing.T) {
test := NewServiceProviderTest(t)
// An actual response from onelogin
TimeNow = func() time.Time {
rv, _ := time.Parse("Mon Jan 2 15:04:05 UTC 2006", "Tue Jan 5 17:53:12 UTC 2016")
return rv
}
Clock = dsig.NewFakeClockAt(TimeNow())
SamlResponse := golden.Get(t, "TestSPCanHandleOneloginResponse_response")
test.IDPMetadata = golden.Get(t, "TestSPCanHandleOneloginResponse_IDPMetadata")
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("https://29ee6d2e.ngrok.io/saml/metadata"),
AcsURL: mustParseURL("https://29ee6d2e.ngrok.io/saml/acs"),
IDPMetadata: &EntityDescriptor{},
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
req := http.Request{PostForm: url.Values{}}
req.PostForm.Set("SAMLResponse", string(SamlResponse))
assertion, err := s.ParseResponse(&req, []string{"id-d40c15c104b52691eccf0a2a5c8a15595be75423"})
assert.Check(t, err)
assert.Check(t, is.Equal("[email protected]", assertion.Subject.NameID.Value))
assert.Check(t, is.DeepEqual([]Attribute{
{
Name: "User.email",
NameFormat: "urn:oasis:names:tc:SAML:2.0:attrname-format:basic",
Values: []AttributeValue{
{
Type: "xs:string",
Value: "[email protected]",
},
},
},
{
Name: "memberOf",
NameFormat: "urn:oasis:names:tc:SAML:2.0:attrname-format:basic",
Values: []AttributeValue{
{
Type: "xs:string",
Value: "",
},
},
},
{
Name: "User.LastName",
NameFormat: "urn:oasis:names:tc:SAML:2.0:attrname-format:basic",
Values: []AttributeValue{
{
Type: "xs:string",
Value: "Kinder",
},
},
},
{
Name: "PersonImmutableID",
NameFormat: "urn:oasis:names:tc:SAML:2.0:attrname-format:basic",
Values: []AttributeValue{
{
Type: "xs:string",
Value: "",
},
},
},
{
Name: "User.FirstName",
NameFormat: "urn:oasis:names:tc:SAML:2.0:attrname-format:basic",
Values: []AttributeValue{
{
Type: "xs:string",
Value: "Ross",
},
},
},
},
assertion.AttributeStatements[0].Attributes))
}
func TestSPCanHandleOktaSignedResponseEncryptedAssertion(t *testing.T) {
test := NewServiceProviderTest(t)
// An actual response from okta - captured with trivial.go + test.Key/test.Certificate
TimeNow = func() time.Time {
rv, _ := time.Parse("Mon Jan 2 15:04:05 UTC 2006", "Tue Mar 3 19:24:28 UTC 2020")
return rv
}
Clock = dsig.NewFakeClockAt(TimeNow())
SamlResponse := golden.Get(t, "TestSPCanHandleOktaSignedResponseEncryptedAssertion_response")
test.IDPMetadata = golden.Get(t, "TestSPCanHandleOktaSignedResponseEncryptedAssertion_IDPMetadata")
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("http://localhost:8000/saml/metadata"),
AcsURL: mustParseURL("http://localhost:8000/saml/acs"),
IDPMetadata: &EntityDescriptor{},
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
req := http.Request{PostForm: url.Values{}}
req.PostForm.Set("SAMLResponse", string(SamlResponse))
assertion, err := s.ParseResponse(&req, []string{"id-a7364d1e4432aa9085a7a8bd824ea2fa8fa8f684"})
assert.Check(t, err)
assert.Check(t, is.Equal("[email protected]", assertion.Subject.NameID.Value))
assert.Check(t, is.DeepEqual([]Attribute{
{
Name: "Username",
NameFormat: "urn:oasis:names:tc:SAML:2.0:attrname-format:unspecified",
Values: []AttributeValue{
{
Type: "xs:string",
Value: "FixedValue",
},
},
},
}, assertion.AttributeStatements[0].Attributes))
}
func TestSPCanHandleOktaResponseEncryptedSignedAssertion(t *testing.T) {
test := NewServiceProviderTest(t)
// An actual response from okta - captured with trivial.go + test.Key/test.Certificate
TimeNow = func() time.Time {
rv, _ := time.Parse("Mon Jan 2 15:04:05 UTC 2006", "Tue Mar 3 19:31:55 UTC 2020")
return rv
}
Clock = dsig.NewFakeClockAt(TimeNow())
SamlResponse := golden.Get(t, "TestSPCanHandleOktaResponseEncryptedSignedAssertion_response")
test.IDPMetadata = golden.Get(t, "TestSPCanHandleOktaResponseEncryptedSignedAssertion_IDPMetadata")
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("http://localhost:8000/saml/metadata"),
AcsURL: mustParseURL("http://localhost:8000/saml/acs"),
IDPMetadata: &EntityDescriptor{},
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
req := http.Request{PostForm: url.Values{}}
req.PostForm.Set("SAMLResponse", string(SamlResponse))
assertion, err := s.ParseResponse(&req, []string{"id-6d976cdde8e76df5df0a8ff58148fc0b7ec6796d"})
assert.Check(t, err)
assert.Check(t, is.Equal("[email protected]", assertion.Subject.NameID.Value))
assert.Check(t, is.DeepEqual([]Attribute{
{
Name: "Username",
NameFormat: "urn:oasis:names:tc:SAML:2.0:attrname-format:unspecified",
Values: []AttributeValue{
{
Type: "xs:string",
Value: "FixedValue",
},
},
},
}, assertion.AttributeStatements[0].Attributes))
}
func TestSPCanHandleOktaResponseEncryptedAssertionBothSigned(t *testing.T) {
test := NewServiceProviderTest(t)
// An actual response from okta - captured with trivial.go + test.Key/test.Certificate
TimeNow = func() time.Time {
rv, _ := time.Parse("Mon Jan 2 15:04:05 UTC 2006", "Tue Mar 3 19:40:54 UTC 2020")
return rv
}
Clock = dsig.NewFakeClockAt(TimeNow())
SamlResponse := golden.Get(t, "TestSPCanHandleOktaResponseEncryptedAssertionBothSigned_response")
test.IDPMetadata = golden.Get(t, "TestSPCanHandleOktaResponseEncryptedAssertionBothSigned_IDPMetadata")
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("http://localhost:8000/saml/metadata"),
AcsURL: mustParseURL("http://localhost:8000/saml/acs"),
IDPMetadata: &EntityDescriptor{},
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
req := http.Request{PostForm: url.Values{}}
req.PostForm.Set("SAMLResponse", string(SamlResponse))
assertion, err := s.ParseResponse(&req, []string{"id-953d4cab69ff475c5901d12e585b0bb15a7b85fe"})
assert.Check(t, err)
assert.Check(t, is.Equal("[email protected]", assertion.Subject.NameID.Value))
assert.Check(t, is.DeepEqual([]Attribute{
{
Name: "Username",
NameFormat: "urn:oasis:names:tc:SAML:2.0:attrname-format:unspecified",
Values: []AttributeValue{
{
Type: "xs:string",
Value: "FixedValue",
},
},
},
}, assertion.AttributeStatements[0].Attributes))
}
func TestSPCanHandlePlaintextResponse(t *testing.T) {
test := NewServiceProviderTest(t)
// An actual response from google
TimeNow = func() time.Time {
rv, _ := time.Parse("Mon Jan 2 15:04:05 UTC 2006", "Tue Jan 5 16:55:39 UTC 2016")
return rv
}
Clock = dsig.NewFakeClockAt(TimeNow())
SamlResponse := golden.Get(t, "TestSPCanHandlePlaintextResponse_response")
test.IDPMetadata = golden.Get(t, "TestSPCanHandlePlaintextResponse_IDPMetadata")
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("https://29ee6d2e.ngrok.io/saml/metadata"),
AcsURL: mustParseURL("https://29ee6d2e.ngrok.io/saml/acs"),
IDPMetadata: &EntityDescriptor{},
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
req := http.Request{PostForm: url.Values{}}
req.PostForm.Set("SAMLResponse", string(SamlResponse))
assertion, err := s.ParseResponse(&req, []string{"id-fd419a5ab0472645427f8e07d87a3a5dd0b2e9a6"})
assert.Check(t, err)
assert.Check(t, is.Equal("[email protected]", assertion.Subject.NameID.Value))
assert.Check(t, is.DeepEqual([]Attribute{
{
Name: "phone",
Values: nil,
},
{
Name: "address",
Values: nil,
},
{
Name: "jobTitle",
Values: nil,
},
{
Name: "firstName",
Values: []AttributeValue{
{
Type: "xs:anyType",
Value: "Ross",
},
},
},
{
Name: "lastName",
Values: []AttributeValue{
{
Type: "xs:anyType",
Value: "Kinder",
},
},
},
}, assertion.AttributeStatements[0].Attributes))
}
func TestSPRejectsInjectedComment(t *testing.T) {
test := NewServiceProviderTest(t)
// An actual response from google
TimeNow = func() time.Time {
rv, _ := time.Parse("Mon Jan 2 15:04:05 UTC 2006", "Tue Jan 5 16:55:39 UTC 2016")
return rv
}
Clock = dsig.NewFakeClockAt(TimeNow())
SamlResponse := golden.Get(t, "TestSPRejectsInjectedComment_response")
test.IDPMetadata = golden.Get(t, "TestSPRejectsInjectedComment_IDPMetadata")
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("https://29ee6d2e.ngrok.io/saml/metadata"),
AcsURL: mustParseURL("https://29ee6d2e.ngrok.io/saml/acs"),
IDPMetadata: &EntityDescriptor{},
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
// this is a valid response
{
req := http.Request{PostForm: url.Values{}}
req.PostForm.Set("SAMLResponse", string(SamlResponse))
assertion, err := s.ParseResponse(&req, []string{"id-fd419a5ab0472645427f8e07d87a3a5dd0b2e9a6"})
assert.Check(t, err)
assert.Check(t, is.Equal("[email protected]", assertion.Subject.NameID.Value))
}
// this is a valid response but with a comment injected
{
x, _ := base64.StdEncoding.DecodeString(string(SamlResponse))
y := strings.Replace(string(x), "[email protected]", "ross@<!-- and a comment -->octolabs.io", 1)
SamlResponse = []byte(base64.StdEncoding.EncodeToString([]byte(y)))
req := http.Request{PostForm: url.Values{}}
req.PostForm.Set("SAMLResponse", string(SamlResponse))
assertion, err := s.ParseResponse(&req, []string{"id-fd419a5ab0472645427f8e07d87a3a5dd0b2e9a6"})
// Note: I would expect the injected comment to be stripped and for the signature
// to validate. Less ideal, but not insecure is the case where the comment breaks
// the signature, perhaps because xml-c18n isn't being implemented correctly by
// dsig.
if err == nil {
assert.Check(t, is.Equal("[email protected]",
assertion.Subject.NameID.Value))
}
}
// this is an invalid response with a commend injected per CVE-2018-7340
// ref: https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations
// it *MUST NOT* validate
{
x, _ := base64.StdEncoding.DecodeString(string(SamlResponse))
y := strings.Replace(string(x), "[email protected]", "[email protected]<!-- and a comment -->.example.com", 1)
SamlResponse = []byte(base64.StdEncoding.EncodeToString([]byte(y)))
req := http.Request{PostForm: url.Values{}}
req.PostForm.Set("SAMLResponse", string(SamlResponse))
_, err := s.ParseResponse(&req, []string{"id-fd419a5ab0472645427f8e07d87a3a5dd0b2e9a6"})
assert.Check(t, err != nil)
realErr := err.(*InvalidResponseError).PrivateErr
assert.Check(t, is.Error(realErr,
"cannot validate signature on Response: Signature could not be verified"))
}
}
func TestSPRejectsMalformedResponse(t *testing.T) {
test := NewServiceProviderTest(t)
// An actual response from google
TimeNow = func() time.Time {
rv, _ := time.Parse("Mon Jan 2 15:04:05 UTC 2006", "Tue Jan 5 16:55:39 UTC 2016")
return rv
}
Clock = dsig.NewFakeClockAt(TimeNow())
SamlResponse := golden.Get(t, "TestSPRejectsMalformedResponse_response")
test.IDPMetadata = golden.Get(t, "TestSPRejectsMalformedResponse_IDPMetadata")
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("https://29ee6d2e.ngrok.io/saml/metadata"),
AcsURL: mustParseURL("https://29ee6d2e.ngrok.io/saml/acs"),
IDPMetadata: &EntityDescriptor{},
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
// this is a valid response
{
req := http.Request{PostForm: url.Values{}}
req.PostForm.Set("SAMLResponse", string(SamlResponse))
assertion, err := s.ParseResponse(&req, []string{"id-fd419a5ab0472645427f8e07d87a3a5dd0b2e9a6"})
assert.Check(t, err)
assert.Check(t, is.Equal("[email protected]", assertion.Subject.NameID.Value))
}
// this is a valid response but with a comment injected
{
x, _ := base64.StdEncoding.DecodeString(string(SamlResponse))
y := strings.Replace(string(x), "<saml2p:Response", "<saml2p:Response ::foo=\"bar\"", 1)
SamlResponse = []byte(base64.StdEncoding.EncodeToString([]byte(y)))
req := http.Request{PostForm: url.Values{}}
req.PostForm.Set("SAMLResponse", string(SamlResponse))
assertion, err := s.ParseResponse(&req, []string{"id-fd419a5ab0472645427f8e07d87a3a5dd0b2e9a6"})
assert.Check(t, is.Error(err.(*InvalidResponseError).PrivateErr,
"invalid xml: validator: in token starting at 1:55: roundtrip error: expected {{saml2p Response} [{{ :foo} bar} {{xmlns saml2p} urn:oasis:names:tc:SAML:2.0:protocol} {{ Destination} https://29ee6d2e.ngrok.io/saml/acs} {{ ID} _fc141db284eb3098605351bde4d9be59} {{ InResponseTo} id-fd419a5ab0472645427f8e07d87a3a5dd0b2e9a6} {{ IssueInstant} 2016-01-05T16:55:39.348Z} {{ Version} 2.0}]}, observed {{ Response} [{{ xmlns} saml2p} {{ foo} bar} {{xmlns saml2p} urn:oasis:names:tc:SAML:2.0:protocol} {{ Destination} https://29ee6d2e.ngrok.io/saml/acs} {{ ID} _fc141db284eb3098605351bde4d9be59} {{ InResponseTo} id-fd419a5ab0472645427f8e07d87a3a5dd0b2e9a6} {{ IssueInstant} 2016-01-05T16:55:39.348Z} {{ Version} 2.0} {{ Version} 2.0}]}"))
assert.Check(t, is.Nil(assertion))
}
}
func TestSPCanParseResponse(t *testing.T) {
test := NewServiceProviderTest(t)
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("https://15661444.ngrok.io/saml2/metadata"),
AcsURL: mustParseURL("https://15661444.ngrok.io/saml2/acs"),
IDPMetadata: &EntityDescriptor{},
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
req := http.Request{PostForm: url.Values{}}
req.PostForm.Set("SAMLResponse", base64.StdEncoding.EncodeToString(test.SamlResponse))
assertion, err := s.ParseResponse(&req, []string{"id-9e61753d64e928af5a7a341a97f420c9"})
assert.Check(t, err)
assert.Check(t, is.DeepEqual([]Attribute{
{
FriendlyName: "uid",
Name: "urn:oid:0.9.2342.19200300.100.1.1",
NameFormat: "urn:oasis:names:tc:SAML:2.0:attrname-format:uri",
Values: []AttributeValue{
{
Type: "xs:string",
Value: "myself",
},
},
},
{
FriendlyName: "eduPersonAffiliation",
Name: "urn:oid:1.3.6.1.4.1.5923.1.1.1.1",
NameFormat: "urn:oasis:names:tc:SAML:2.0:attrname-format:uri",
Values: []AttributeValue{
{
Type: "xs:string",
Value: "Member",
},
{
Type: "xs:string",
Value: "Staff",
},
},
},
{
FriendlyName: "eduPersonPrincipalName",
Name: "urn:oid:1.3.6.1.4.1.5923.1.1.1.6",
NameFormat: "urn:oasis:names:tc:SAML:2.0:attrname-format:uri",
Values: []AttributeValue{
{
Type: "xs:string",
Value: "[email protected]",
},
},
},
{
FriendlyName: "sn",
Name: "urn:oid:2.5.4.4",
NameFormat: "urn:oasis:names:tc:SAML:2.0:attrname-format:uri",
Values: []AttributeValue{
{
Type: "xs:string",
Value: "And I",
},
},
},
{
FriendlyName: "eduPersonScopedAffiliation",
Name: "urn:oid:1.3.6.1.4.1.5923.1.1.1.9",
NameFormat: "urn:oasis:names:tc:SAML:2.0:attrname-format:uri",
Values: []AttributeValue{
{
Type: "xs:string",
Value: "[email protected]",
},
{
Type: "xs:string",
Value: "[email protected]",
},
},
},
{
FriendlyName: "givenName",
Name: "urn:oid:2.5.4.42",
NameFormat: "urn:oasis:names:tc:SAML:2.0:attrname-format:uri",
Values: []AttributeValue{
{
Type: "xs:string",
Value: "Me Myself",
},
},
},
{
FriendlyName: "eduPersonEntitlement",
Name: "urn:oid:1.3.6.1.4.1.5923.1.1.1.7",
NameFormat: "urn:oasis:names:tc:SAML:2.0:attrname-format:uri",
Values: []AttributeValue{
{
Type: "xs:string",
Value: "urn:mace:dir:entitlement:common-lib-terms",
},
},
},
{
FriendlyName: "cn",
Name: "urn:oid:2.5.4.3",
NameFormat: "urn:oasis:names:tc:SAML:2.0:attrname-format:uri",
Values: []AttributeValue{
{
Type: "xs:string",
Value: "Me Myself And I",
},
},
},
{
FriendlyName: "eduPersonTargetedID",
Name: "urn:oid:1.3.6.1.4.1.5923.1.1.1.10",
NameFormat: "urn:oasis:names:tc:SAML:2.0:attrname-format:uri",
Values: []AttributeValue{
{
NameID: &NameID{Format: "urn:oasis:names:tc:SAML:2.0:nameid-format:persistent", NameQualifier: "https://idp.testshib.org/idp/shibboleth", SPNameQualifier: "https://15661444.ngrok.io/saml2/metadata", Value: "8F+M9ovyaYNwCId0pVkVsnZYRDo="},
},
},
},
{
FriendlyName: "telephoneNumber",
Name: "urn:oid:2.5.4.20",
NameFormat: "urn:oasis:names:tc:SAML:2.0:attrname-format:uri",
Values: []AttributeValue{
{
Type: "xs:string",
Value: "555-5555",
},
},
},
}, assertion.AttributeStatements[0].Attributes))
}
func (test *ServiceProviderTest) replaceDestination(newDestination string) {
newStr := ""
if newDestination != "" {
newStr = `Destination="` + newDestination + `"`
}
test.SamlResponse = bytes.Replace(test.SamlResponse,
[]byte(`Destination="https://15661444.ngrok.io/saml2/acs"`), []byte(newStr), 1)
}
func TestSPCanProcessResponseWithoutDestination(t *testing.T) {
test := NewServiceProviderTest(t)
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("https://15661444.ngrok.io/saml2/metadata"),
AcsURL: mustParseURL("https://15661444.ngrok.io/saml2/acs"),
IDPMetadata: &EntityDescriptor{},
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
req := http.Request{PostForm: url.Values{}}
test.replaceDestination("")
req.PostForm.Set("SAMLResponse", base64.StdEncoding.EncodeToString(test.SamlResponse))
_, err = s.ParseResponse(&req, []string{"id-9e61753d64e928af5a7a341a97f420c9"})
assert.Check(t, err)
}
func (test *ServiceProviderTest) responseDom() (doc *etree.Document) {
doc = etree.NewDocument()
doc.ReadFromBytes(test.SamlResponse)
return doc
}
func addSignatureToDocument(doc *etree.Document) *etree.Document {
responseEl := doc.FindElement("//Response")
signatureEl := doc.CreateElement("xmldsig:Signature")
signatureEl.CreateAttr("xmlns:xmldsig", "http://www.w3.org/2000/09/xmldsig#")
responseEl.AddChild(signatureEl)
return doc
}
func removeDestinationFromDocument(doc *etree.Document) *etree.Document {
responseEl := doc.FindElement("//Response")
responseEl.RemoveAttr("Destination")
return doc
}
func TestServiceProviderMismatchedDestinationsWithSignaturePresent(t *testing.T) {
test := NewServiceProviderTest(t)
s := ServiceProvider{
Key: test.Key,
Certificate: test.Certificate,
MetadataURL: mustParseURL("https://15661444.ngrok.io/saml2/metadata"),
AcsURL: mustParseURL("https://15661444.ngrok.io/saml2/acs"),
IDPMetadata: &EntityDescriptor{},
}
err := xml.Unmarshal(test.IDPMetadata, &s.IDPMetadata)
assert.Check(t, err)
req := http.Request{PostForm: url.Values{}}
s.AcsURL = mustParseURL("https://wrong/saml2/acs")
bytes, _ := addSignatureToDocument(test.responseDom()).WriteToBytes()
req.PostForm.Set("SAMLResponse", base64.StdEncoding.EncodeToString(bytes))
_, err = s.ParseResponse(&req, []string{"id-9e61753d64e928af5a7a341a97f420c9"})
assert.Check(t, is.Error(err.(*InvalidResponseError).PrivateErr,
"`Destination` does not match AcsURL (expected \"https://wrong/saml2/acs\", actual \"https://15661444.ngrok.io/saml2/acs\")"))
}
func TestServiceProviderMissingDestinationWithSignaturePresent(t *testing.T) {
test := NewServiceProviderTest(t)
s := ServiceProvider{
Key: test.Key,