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canonicalize_test.go
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canonicalize_test.go
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package dsig
import (
"strings"
"testing"
"github.com/beevik/etree"
"github.com/stretchr/testify/require"
)
const (
assertion = `<samlp:AuthnRequest xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol" xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion" ID="_88a93ebe-abdf-48cd-9ed0-b0dd1b252909" Version="2.0" ProtocolBinding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" AssertionConsumerServiceURL="https://saml2.test.astuart.co/sso/saml2" AssertionConsumerServiceIndex="0" AttributeConsumingServiceIndex="0" IssueInstant="2016-04-28T15:37:17" Destination="http://idp.astuart.co/idp/profile/SAML2/Redirect/SSO"><!-- Some Comment --><saml:Issuer>https://saml2.test.astuart.co/sso/saml2</saml:Issuer><samlp:NameIDPolicy AllowCreate="true" Format=""/><samlp:RequestedAuthnContext Comparison="exact"><saml:AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</saml:AuthnContextClassRef></samlp:RequestedAuthnContext></samlp:AuthnRequest>`
c14n11 = `<samlp:AuthnRequest xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion" xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol" AssertionConsumerServiceIndex="0" AssertionConsumerServiceURL="https://saml2.test.astuart.co/sso/saml2" AttributeConsumingServiceIndex="0" Destination="http://idp.astuart.co/idp/profile/SAML2/Redirect/SSO" ID="_88a93ebe-abdf-48cd-9ed0-b0dd1b252909" IssueInstant="2016-04-28T15:37:17" ProtocolBinding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" Version="2.0"><saml:Issuer>https://saml2.test.astuart.co/sso/saml2</saml:Issuer><samlp:NameIDPolicy AllowCreate="true" Format=""></samlp:NameIDPolicy><samlp:RequestedAuthnContext Comparison="exact"><saml:AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</saml:AuthnContextClassRef></samlp:RequestedAuthnContext></samlp:AuthnRequest>`
assertionC14ned = `<samlp:AuthnRequest xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol" AssertionConsumerServiceIndex="0" AssertionConsumerServiceURL="https://saml2.test.astuart.co/sso/saml2" AttributeConsumingServiceIndex="0" Destination="http://idp.astuart.co/idp/profile/SAML2/Redirect/SSO" ID="_88a93ebe-abdf-48cd-9ed0-b0dd1b252909" IssueInstant="2016-04-28T15:37:17" ProtocolBinding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" Version="2.0"><saml:Issuer xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion">https://saml2.test.astuart.co/sso/saml2</saml:Issuer><samlp:NameIDPolicy AllowCreate="true" Format=""></samlp:NameIDPolicy><samlp:RequestedAuthnContext Comparison="exact"><saml:AuthnContextClassRef xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion">urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</saml:AuthnContextClassRef></samlp:RequestedAuthnContext></samlp:AuthnRequest>`
c14n11Comment = `<samlp:AuthnRequest xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion" xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol" AssertionConsumerServiceIndex="0" AssertionConsumerServiceURL="https://saml2.test.astuart.co/sso/saml2" AttributeConsumingServiceIndex="0" Destination="http://idp.astuart.co/idp/profile/SAML2/Redirect/SSO" ID="_88a93ebe-abdf-48cd-9ed0-b0dd1b252909" IssueInstant="2016-04-28T15:37:17" ProtocolBinding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" Version="2.0"><!-- Some Comment --><saml:Issuer>https://saml2.test.astuart.co/sso/saml2</saml:Issuer><samlp:NameIDPolicy AllowCreate="true" Format=""></samlp:NameIDPolicy><samlp:RequestedAuthnContext Comparison="exact"><saml:AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</saml:AuthnContextClassRef></samlp:RequestedAuthnContext></samlp:AuthnRequest>`
assertionC14nedComment = `<samlp:AuthnRequest xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol" AssertionConsumerServiceIndex="0" AssertionConsumerServiceURL="https://saml2.test.astuart.co/sso/saml2" AttributeConsumingServiceIndex="0" Destination="http://idp.astuart.co/idp/profile/SAML2/Redirect/SSO" ID="_88a93ebe-abdf-48cd-9ed0-b0dd1b252909" IssueInstant="2016-04-28T15:37:17" ProtocolBinding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" Version="2.0"><!-- Some Comment --><saml:Issuer xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion">https://saml2.test.astuart.co/sso/saml2</saml:Issuer><samlp:NameIDPolicy AllowCreate="true" Format=""></samlp:NameIDPolicy><samlp:RequestedAuthnContext Comparison="exact"><saml:AuthnContextClassRef xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion">urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</saml:AuthnContextClassRef></samlp:RequestedAuthnContext></samlp:AuthnRequest>`
)
const (
xmldoc = `<Foo ID="id1619705532971228558789260" xmlns:bar="urn:bar" xmlns="urn:foo"><bar:Baz></bar:Baz></Foo>`
xmldocC14N10ExclusiveCanonicalized = `<Foo xmlns="urn:foo" ID="id1619705532971228558789260"><bar:Baz xmlns:bar="urn:bar"></bar:Baz></Foo>`
xmldocC14N11Canonicalized = `<Foo xmlns="urn:foo" xmlns:bar="urn:bar" ID="id1619705532971228558789260"><bar:Baz></bar:Baz></Foo>`
)
func runCanonicalizationTest(t *testing.T, canonicalizer Canonicalizer, xmlstr string, canonicalXmlstr string) {
raw := etree.NewDocument()
err := raw.ReadFromString(xmlstr)
require.NoError(t, err)
canonicalized, err := canonicalizer.Canonicalize(raw.Root())
require.NoError(t, err)
require.Equal(t, canonicalXmlstr, string(canonicalized))
}
func TestExcC14N10(t *testing.T) {
runCanonicalizationTest(t, MakeC14N10ExclusiveCanonicalizerWithPrefixList(""), assertion, assertionC14ned)
}
func TestExcC14N10WithComments(t *testing.T) {
runCanonicalizationTest(t, MakeC14N10ExclusiveWithCommentsCanonicalizerWithPrefixList(""), assertion, assertionC14nedComment)
}
func TestC14N11(t *testing.T) {
runCanonicalizationTest(t, MakeC14N11Canonicalizer(), assertion, c14n11)
}
func TestC14N11WithComments(t *testing.T) {
runCanonicalizationTest(t, MakeC14N11WithCommentsCanonicalizer(), assertion, c14n11Comment)
}
func TestXmldocC14N10Exclusive(t *testing.T) {
runCanonicalizationTest(t, MakeC14N10ExclusiveCanonicalizerWithPrefixList(""), xmldoc, xmldocC14N10ExclusiveCanonicalized)
}
func TestXmldocC14N11(t *testing.T) {
runCanonicalizationTest(t, MakeC14N11Canonicalizer(), xmldoc, xmldocC14N11Canonicalized)
}
func TestNestedExcC14N11(t *testing.T) {
input := `<X xmlns:x="x" xmlns:y="y"><Y xmlns:x="x" xmlns:y="y" xmlns:z="z"/></X>`
expected := `<X xmlns:x="x" xmlns:y="y"><Y xmlns:z="z"></Y></X>`
runCanonicalizationTest(t, MakeC14N11Canonicalizer(), input, expected)
}
func TestExcC14nDefaultNamespace(t *testing.T) {
input := `<foo:Foo xmlns="urn:baz" xmlns:foo="urn:foo"><foo:Bar></foo:Bar></foo:Foo>`
expected := `<foo:Foo xmlns:foo="urn:foo"><foo:Bar></foo:Bar></foo:Foo>`
runCanonicalizationTest(t, MakeC14N10ExclusiveCanonicalizerWithPrefixList(""), input, expected)
}
func TestExcC14nWithPrefixList(t *testing.T) {
input := `<foo:Foo xmlns:foo="urn:foo" xmlns:xs="http://www.w3.org/2001/XMLSchema"><foo:Bar xmlns:xs="http://www.w3.org/2001/XMLSchema"></foo:Bar></foo:Foo>`
expected := `<foo:Foo xmlns:foo="urn:foo" xmlns:xs="http://www.w3.org/2001/XMLSchema"><foo:Bar></foo:Bar></foo:Foo>`
canonicalizer := MakeC14N10ExclusiveCanonicalizerWithPrefixList("xs")
runCanonicalizationTest(t, canonicalizer, input, expected)
}
func TestExcC14nRedeclareDefaultNamespace(t *testing.T) {
input := `<Foo xmlns="urn:foo"><Bar xmlns="uri:bar"></Bar></Foo>`
expected := `<Foo xmlns="urn:foo"><Bar xmlns="uri:bar"></Bar></Foo>`
canonicalizer := MakeC14N10ExclusiveCanonicalizerWithPrefixList("")
runCanonicalizationTest(t, canonicalizer, input, expected)
}
func TestC14N10RecCanonicalizer(t *testing.T) {
// From https://www.w3.org/TR/2001/REC-xml-c14n-20010315#Example-SETags
input := `<doc>
<e1 />
<e2 ></e2>
<e3 name = "elem3" id="elem3" />
<e4 name="elem4" id="elem4" ></e4>
<e5 a:attr="out" b:attr="sorted" attr2="all" attr="I'm"
xmlns:b="http://www.ietf.org"
xmlns:a="http://www.w3.org"
xmlns="http://example.org"/>
<e6 xmlns="" xmlns:a="http://www.w3.org">
<e7 xmlns="http://www.ietf.org">
<e8 xmlns="" xmlns:a="http://www.w3.org">
<e9 xmlns="" xmlns:a="http://www.ietf.org"/>
</e8>
</e7>
</e6>
</doc>`
expected := `<doc>
<e1></e1>
<e2></e2>
<e3 id="elem3" name="elem3"></e3>
<e4 id="elem4" name="elem4"></e4>
<e5 xmlns="http://example.org" xmlns:a="http://www.w3.org" xmlns:b="http://www.ietf.org" attr="I'm" attr2="all" b:attr="sorted" a:attr="out"></e5>
<e6 xmlns:a="http://www.w3.org">
<e7 xmlns="http://www.ietf.org">
<e8 xmlns="">
<e9 xmlns:a="http://www.ietf.org"></e9>
</e8>
</e7>
</e6>
</doc>`
canonicalizer := MakeC14N10RecCanonicalizer()
runCanonicalizationTest(t, canonicalizer, input, expected)
}
func TestC14N10RecCanonicalizerWithNamespaceInheritance(t *testing.T) {
input := `<RootElement xmlns="http://www.example.com/ns1" xmlns:ns2="http://www.example.com/ns2">
<ns2:ChildElement>
<ns2:GrandChildElement>Hello, World!</ns2:GrandChildElement>
</ns2:ChildElement>
</RootElement>`
expected := `<ns2:ChildElement xmlns="http://www.example.com/ns1" xmlns:ns2="http://www.example.com/ns2">
<ns2:GrandChildElement>Hello, World!</ns2:GrandChildElement>
</ns2:ChildElement>`
doc := etree.NewDocument()
if err := doc.ReadFromString(input); err != nil {
t.Fatalf("Error parsing input XML: %v", err)
}
childElement := doc.FindElement(".//ns2:ChildElement")
if childElement == nil {
t.Fatal("Error: childElement not found")
}
canonicalizer := MakeC14N10RecCanonicalizer()
canonicalized, err := canonicalizer.Canonicalize(childElement)
require.NoError(t, err)
require.Equal(t, strings.TrimSpace(expected), strings.TrimSpace(string(canonicalized)))
}