2014-12-17 07:58:39 +01:00
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package token
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import (
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"crypto"
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"crypto/rand"
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"crypto/x509"
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"encoding/base64"
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"encoding/json"
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"encoding/pem"
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"fmt"
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"io/ioutil"
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"net/http"
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"os"
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"strings"
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"testing"
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"time"
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2015-08-19 23:24:31 +02:00
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"github.com/docker/distribution/context"
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2015-02-11 02:34:04 +01:00
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"github.com/docker/distribution/registry/auth"
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2015-01-06 03:21:03 +01:00
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"github.com/docker/libtrust"
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2014-12-17 07:58:39 +01:00
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)
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func makeRootKeys(numKeys int) ([]libtrust.PrivateKey, error) {
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keys := make([]libtrust.PrivateKey, 0, numKeys)
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for i := 0; i < numKeys; i++ {
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key, err := libtrust.GenerateECP256PrivateKey()
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if err != nil {
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return nil, err
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}
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keys = append(keys, key)
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}
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return keys, nil
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}
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func makeSigningKeyWithChain(rootKey libtrust.PrivateKey, depth int) (libtrust.PrivateKey, error) {
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if depth == 0 {
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// Don't need to build a chain.
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return rootKey, nil
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}
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var (
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x5c = make([]string, depth)
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parentKey = rootKey
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key libtrust.PrivateKey
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cert *x509.Certificate
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err error
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)
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for depth > 0 {
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if key, err = libtrust.GenerateECP256PrivateKey(); err != nil {
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return nil, err
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}
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if cert, err = libtrust.GenerateCACert(parentKey, key); err != nil {
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return nil, err
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}
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depth--
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x5c[depth] = base64.StdEncoding.EncodeToString(cert.Raw)
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parentKey = key
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}
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key.AddExtendedField("x5c", x5c)
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return key, nil
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}
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func makeRootCerts(rootKeys []libtrust.PrivateKey) ([]*x509.Certificate, error) {
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certs := make([]*x509.Certificate, 0, len(rootKeys))
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for _, key := range rootKeys {
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cert, err := libtrust.GenerateCACert(key, key)
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if err != nil {
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return nil, err
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}
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certs = append(certs, cert)
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}
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return certs, nil
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}
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func makeTrustedKeyMap(rootKeys []libtrust.PrivateKey) map[string]libtrust.PublicKey {
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trustedKeys := make(map[string]libtrust.PublicKey, len(rootKeys))
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for _, key := range rootKeys {
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trustedKeys[key.KeyID()] = key.PublicKey()
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}
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return trustedKeys
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}
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2016-04-28 05:54:36 +02:00
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func makeTestToken(issuer, audience string, access []*ResourceActions, rootKey libtrust.PrivateKey, depth int, now time.Time, exp time.Time) (*Token, error) {
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2014-12-17 07:58:39 +01:00
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signingKey, err := makeSigningKeyWithChain(rootKey, depth)
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if err != nil {
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2016-02-23 22:33:38 +01:00
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return nil, fmt.Errorf("unable to make signing key with chain: %s", err)
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2014-12-17 07:58:39 +01:00
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}
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2016-01-26 05:11:41 +01:00
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var rawJWK json.RawMessage
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rawJWK, err = signingKey.PublicKey().MarshalJSON()
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2014-12-17 07:58:39 +01:00
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if err != nil {
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return nil, fmt.Errorf("unable to marshal signing key to JSON: %s", err)
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}
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joseHeader := &Header{
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Type: "JWT",
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SigningAlg: "ES256",
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2016-01-26 05:11:41 +01:00
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RawJWK: &rawJWK,
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2014-12-17 07:58:39 +01:00
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}
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randomBytes := make([]byte, 15)
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if _, err = rand.Read(randomBytes); err != nil {
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return nil, fmt.Errorf("unable to read random bytes for jwt id: %s", err)
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}
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claimSet := &ClaimSet{
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Issuer: issuer,
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Subject: "foo",
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Audience: audience,
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2016-04-28 05:54:36 +02:00
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Expiration: exp.Unix(),
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2014-12-17 07:58:39 +01:00
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NotBefore: now.Unix(),
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IssuedAt: now.Unix(),
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JWTID: base64.URLEncoding.EncodeToString(randomBytes),
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Access: access,
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}
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var joseHeaderBytes, claimSetBytes []byte
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if joseHeaderBytes, err = json.Marshal(joseHeader); err != nil {
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return nil, fmt.Errorf("unable to marshal jose header: %s", err)
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}
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if claimSetBytes, err = json.Marshal(claimSet); err != nil {
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return nil, fmt.Errorf("unable to marshal claim set: %s", err)
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}
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encodedJoseHeader := joseBase64UrlEncode(joseHeaderBytes)
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encodedClaimSet := joseBase64UrlEncode(claimSetBytes)
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encodingToSign := fmt.Sprintf("%s.%s", encodedJoseHeader, encodedClaimSet)
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var signatureBytes []byte
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if signatureBytes, _, err = signingKey.Sign(strings.NewReader(encodingToSign), crypto.SHA256); err != nil {
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return nil, fmt.Errorf("unable to sign jwt payload: %s", err)
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}
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signature := joseBase64UrlEncode(signatureBytes)
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tokenString := fmt.Sprintf("%s.%s", encodingToSign, signature)
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return NewToken(tokenString)
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}
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// This test makes 4 tokens with a varying number of intermediate
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// certificates ranging from no intermediate chain to a length of 3
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// intermediates.
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func TestTokenVerify(t *testing.T) {
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var (
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numTokens = 4
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issuer = "test-issuer"
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audience = "test-audience"
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access = []*ResourceActions{
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{
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Type: "repository",
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Name: "foo/bar",
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Actions: []string{"pull", "push"},
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},
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}
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)
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rootKeys, err := makeRootKeys(numTokens)
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if err != nil {
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t.Fatal(err)
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}
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rootCerts, err := makeRootCerts(rootKeys)
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if err != nil {
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t.Fatal(err)
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}
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rootPool := x509.NewCertPool()
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for _, rootCert := range rootCerts {
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rootPool.AddCert(rootCert)
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}
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trustedKeys := makeTrustedKeyMap(rootKeys)
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tokens := make([]*Token, 0, numTokens)
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for i := 0; i < numTokens; i++ {
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2016-04-28 05:54:36 +02:00
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token, err := makeTestToken(issuer, audience, access, rootKeys[i], i, time.Now(), time.Now().Add(5*time.Minute))
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2014-12-17 07:58:39 +01:00
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if err != nil {
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t.Fatal(err)
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}
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tokens = append(tokens, token)
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}
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verifyOps := VerifyOptions{
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2015-01-06 03:21:03 +01:00
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TrustedIssuers: []string{issuer},
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AcceptedAudiences: []string{audience},
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2014-12-17 07:58:39 +01:00
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Roots: rootPool,
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TrustedKeys: trustedKeys,
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}
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for _, token := range tokens {
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if err := token.Verify(verifyOps); err != nil {
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t.Fatal(err)
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}
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}
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}
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2016-04-28 05:54:36 +02:00
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// This tests that we don't fail tokens with nbf within
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// the defined leeway in seconds
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func TestLeeway(t *testing.T) {
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var (
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issuer = "test-issuer"
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audience = "test-audience"
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access = []*ResourceActions{
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{
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Type: "repository",
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Name: "foo/bar",
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Actions: []string{"pull", "push"},
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},
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}
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)
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rootKeys, err := makeRootKeys(1)
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if err != nil {
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t.Fatal(err)
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}
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trustedKeys := makeTrustedKeyMap(rootKeys)
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verifyOps := VerifyOptions{
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TrustedIssuers: []string{issuer},
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AcceptedAudiences: []string{audience},
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Roots: nil,
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TrustedKeys: trustedKeys,
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}
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// nbf verification should pass within leeway
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futureNow := time.Now().Add(time.Duration(5) * time.Second)
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token, err := makeTestToken(issuer, audience, access, rootKeys[0], 0, futureNow, futureNow.Add(5*time.Minute))
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if err != nil {
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t.Fatal(err)
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}
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if err := token.Verify(verifyOps); err != nil {
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t.Fatal(err)
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}
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// nbf verification should fail with a skew larger than leeway
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futureNow = time.Now().Add(time.Duration(61) * time.Second)
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token, err = makeTestToken(issuer, audience, access, rootKeys[0], 0, futureNow, futureNow.Add(5*time.Minute))
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if err != nil {
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t.Fatal(err)
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}
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if err = token.Verify(verifyOps); err == nil {
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t.Fatal("Verification should fail for token with nbf in the future outside leeway")
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}
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// exp verification should pass within leeway
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token, err = makeTestToken(issuer, audience, access, rootKeys[0], 0, time.Now(), time.Now().Add(-59*time.Second))
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if err != nil {
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t.Fatal(err)
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}
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if err = token.Verify(verifyOps); err != nil {
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t.Fatal(err)
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}
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// exp verification should fail with a skew larger than leeway
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token, err = makeTestToken(issuer, audience, access, rootKeys[0], 0, time.Now(), time.Now().Add(-60*time.Second))
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if err != nil {
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t.Fatal(err)
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}
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if err = token.Verify(verifyOps); err == nil {
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t.Fatal("Verification should fail for token with exp in the future outside leeway")
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}
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}
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2014-12-17 07:58:39 +01:00
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func writeTempRootCerts(rootKeys []libtrust.PrivateKey) (filename string, err error) {
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rootCerts, err := makeRootCerts(rootKeys)
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if err != nil {
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return "", err
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}
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tempFile, err := ioutil.TempFile("", "rootCertBundle")
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if err != nil {
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return "", err
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}
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defer tempFile.Close()
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for _, cert := range rootCerts {
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if err = pem.Encode(tempFile, &pem.Block{
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Type: "CERTIFICATE",
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Bytes: cert.Raw,
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}); err != nil {
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os.Remove(tempFile.Name())
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return "", err
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}
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}
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return tempFile.Name(), nil
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}
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// TestAccessController tests complete integration of the token auth package.
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// It starts by mocking the options for a token auth accessController which
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// it creates. It then tries a few mock requests:
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// - don't supply a token; should error with challenge
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// - supply an invalid token; should error with challenge
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// - supply a token with insufficient access; should error with challenge
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// - supply a valid token; should not error
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func TestAccessController(t *testing.T) {
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// Make 2 keys; only the first is to be a trusted root key.
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rootKeys, err := makeRootKeys(2)
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if err != nil {
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t.Fatal(err)
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}
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rootCertBundleFilename, err := writeTempRootCerts(rootKeys[:1])
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if err != nil {
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t.Fatal(err)
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}
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defer os.Remove(rootCertBundleFilename)
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realm := "https://auth.example.com/token/"
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issuer := "test-issuer.example.com"
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service := "test-service.example.com"
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options := map[string]interface{}{
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"realm": realm,
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"issuer": issuer,
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"service": service,
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2015-02-20 01:46:24 +01:00
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"rootcertbundle": rootCertBundleFilename,
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2014-12-17 07:58:39 +01:00
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}
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accessController, err := newAccessController(options)
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if err != nil {
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t.Fatal(err)
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}
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// 1. Make a mock http.Request with no token.
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req, err := http.NewRequest("GET", "http://example.com/foo", nil)
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if err != nil {
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t.Fatal(err)
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}
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testAccess := auth.Access{
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Resource: auth.Resource{
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Type: "foo",
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Name: "bar",
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},
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Action: "baz",
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}
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2016-10-06 02:47:12 +02:00
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ctx := context.WithRequest(context.Background(), req)
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2015-02-04 02:59:24 +01:00
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authCtx, err := accessController.Authorized(ctx, testAccess)
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2014-12-17 07:58:39 +01:00
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challenge, ok := err.(auth.Challenge)
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if !ok {
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t.Fatal("accessController did not return a challenge")
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}
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if challenge.Error() != ErrTokenRequired.Error() {
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t.Fatalf("accessControler did not get expected error - got %s - expected %s", challenge, ErrTokenRequired)
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}
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2015-02-04 02:59:24 +01:00
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if authCtx != nil {
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t.Fatalf("expected nil auth context but got %s", authCtx)
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}
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2014-12-17 07:58:39 +01:00
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// 2. Supply an invalid token.
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token, err := makeTestToken(
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issuer, service,
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|
[]*ResourceActions{{
|
|
|
|
Type: testAccess.Type,
|
|
|
|
Name: testAccess.Name,
|
|
|
|
Actions: []string{testAccess.Action},
|
|
|
|
}},
|
2016-04-28 05:54:36 +02:00
|
|
|
rootKeys[1], 1, time.Now(), time.Now().Add(5*time.Minute), // Everything is valid except the key which signed it.
|
2014-12-17 07:58:39 +01:00
|
|
|
)
|
|
|
|
if err != nil {
|
|
|
|
t.Fatal(err)
|
|
|
|
}
|
|
|
|
|
|
|
|
req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", token.compactRaw()))
|
|
|
|
|
2015-02-04 02:59:24 +01:00
|
|
|
authCtx, err = accessController.Authorized(ctx, testAccess)
|
2014-12-17 07:58:39 +01:00
|
|
|
challenge, ok = err.(auth.Challenge)
|
|
|
|
if !ok {
|
|
|
|
t.Fatal("accessController did not return a challenge")
|
|
|
|
}
|
|
|
|
|
|
|
|
if challenge.Error() != ErrInvalidToken.Error() {
|
|
|
|
t.Fatalf("accessControler did not get expected error - got %s - expected %s", challenge, ErrTokenRequired)
|
|
|
|
}
|
|
|
|
|
2015-02-04 02:59:24 +01:00
|
|
|
if authCtx != nil {
|
|
|
|
t.Fatalf("expected nil auth context but got %s", authCtx)
|
|
|
|
}
|
|
|
|
|
2014-12-17 07:58:39 +01:00
|
|
|
// 3. Supply a token with insufficient access.
|
|
|
|
token, err = makeTestToken(
|
|
|
|
issuer, service,
|
|
|
|
[]*ResourceActions{}, // No access specified.
|
2016-04-28 05:54:36 +02:00
|
|
|
rootKeys[0], 1, time.Now(), time.Now().Add(5*time.Minute),
|
2014-12-17 07:58:39 +01:00
|
|
|
)
|
|
|
|
if err != nil {
|
|
|
|
t.Fatal(err)
|
|
|
|
}
|
|
|
|
|
|
|
|
req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", token.compactRaw()))
|
|
|
|
|
2015-02-04 02:59:24 +01:00
|
|
|
authCtx, err = accessController.Authorized(ctx, testAccess)
|
2014-12-17 07:58:39 +01:00
|
|
|
challenge, ok = err.(auth.Challenge)
|
|
|
|
if !ok {
|
|
|
|
t.Fatal("accessController did not return a challenge")
|
|
|
|
}
|
|
|
|
|
|
|
|
if challenge.Error() != ErrInsufficientScope.Error() {
|
|
|
|
t.Fatalf("accessControler did not get expected error - got %s - expected %s", challenge, ErrInsufficientScope)
|
|
|
|
}
|
|
|
|
|
2015-02-04 02:59:24 +01:00
|
|
|
if authCtx != nil {
|
|
|
|
t.Fatalf("expected nil auth context but got %s", authCtx)
|
|
|
|
}
|
|
|
|
|
2014-12-17 07:58:39 +01:00
|
|
|
// 4. Supply the token we need, or deserve, or whatever.
|
|
|
|
token, err = makeTestToken(
|
|
|
|
issuer, service,
|
|
|
|
[]*ResourceActions{{
|
|
|
|
Type: testAccess.Type,
|
|
|
|
Name: testAccess.Name,
|
|
|
|
Actions: []string{testAccess.Action},
|
|
|
|
}},
|
2016-04-28 05:54:36 +02:00
|
|
|
rootKeys[0], 1, time.Now(), time.Now().Add(5*time.Minute),
|
2014-12-17 07:58:39 +01:00
|
|
|
)
|
|
|
|
if err != nil {
|
|
|
|
t.Fatal(err)
|
|
|
|
}
|
|
|
|
|
|
|
|
req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", token.compactRaw()))
|
|
|
|
|
2015-02-04 02:59:24 +01:00
|
|
|
authCtx, err = accessController.Authorized(ctx, testAccess)
|
|
|
|
if err != nil {
|
2014-12-17 07:58:39 +01:00
|
|
|
t.Fatalf("accessController returned unexpected error: %s", err)
|
|
|
|
}
|
2015-02-04 02:59:24 +01:00
|
|
|
|
2016-01-29 02:02:09 +01:00
|
|
|
userInfo, ok := authCtx.Value(auth.UserKey).(auth.UserInfo)
|
2015-02-04 02:59:24 +01:00
|
|
|
if !ok {
|
|
|
|
t.Fatal("token accessController did not set auth.user context")
|
|
|
|
}
|
|
|
|
|
|
|
|
if userInfo.Name != "foo" {
|
|
|
|
t.Fatalf("expected user name %q, got %q", "foo", userInfo.Name)
|
|
|
|
}
|
2014-12-17 07:58:39 +01:00
|
|
|
}
|
2016-08-31 19:00:12 +02:00
|
|
|
|
|
|
|
// This tests that newAccessController can handle PEM blocks in the certificate
|
|
|
|
// file other than certificates, for example a private key.
|
|
|
|
func TestNewAccessControllerPemBlock(t *testing.T) {
|
|
|
|
rootKeys, err := makeRootKeys(2)
|
|
|
|
if err != nil {
|
|
|
|
t.Fatal(err)
|
|
|
|
}
|
|
|
|
|
|
|
|
rootCertBundleFilename, err := writeTempRootCerts(rootKeys)
|
|
|
|
if err != nil {
|
|
|
|
t.Fatal(err)
|
|
|
|
}
|
|
|
|
defer os.Remove(rootCertBundleFilename)
|
|
|
|
|
|
|
|
// Add something other than a certificate to the rootcertbundle
|
|
|
|
file, err := os.OpenFile(rootCertBundleFilename, os.O_WRONLY|os.O_APPEND, 0666)
|
|
|
|
if err != nil {
|
|
|
|
t.Fatal(err)
|
|
|
|
}
|
|
|
|
keyBlock, err := rootKeys[0].PEMBlock()
|
|
|
|
if err != nil {
|
|
|
|
t.Fatal(err)
|
|
|
|
}
|
|
|
|
err = pem.Encode(file, keyBlock)
|
|
|
|
if err != nil {
|
|
|
|
t.Fatal(err)
|
|
|
|
}
|
|
|
|
err = file.Close()
|
|
|
|
if err != nil {
|
|
|
|
t.Fatal(err)
|
|
|
|
}
|
|
|
|
|
|
|
|
realm := "https://auth.example.com/token/"
|
|
|
|
issuer := "test-issuer.example.com"
|
|
|
|
service := "test-service.example.com"
|
|
|
|
|
|
|
|
options := map[string]interface{}{
|
|
|
|
"realm": realm,
|
|
|
|
"issuer": issuer,
|
|
|
|
"service": service,
|
|
|
|
"rootcertbundle": rootCertBundleFilename,
|
|
|
|
}
|
|
|
|
|
|
|
|
ac, err := newAccessController(options)
|
|
|
|
if err != nil {
|
|
|
|
t.Fatal(err)
|
|
|
|
}
|
|
|
|
|
|
|
|
if len(ac.(*accessController).rootCerts.Subjects()) != 2 {
|
|
|
|
t.Fatal("accessController has the wrong number of certificates")
|
|
|
|
}
|
|
|
|
}
|