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oidc authentication plugin: don't trim issuer URLs with trailing slashes 

The issuer URL passed to the plugin must identically match the issuer
URL returned by OpenID Connect discovery. However, the plugin currently
trims all trailing slashes from issuer URLs, causing a mismatch. Since
the go-oidc client already handles this case correctly, don't trim the
path.
pull/6/head
Eric Chiang 2016-08-01 10:14:20 -07:00
parent ed763b8034
commit bc3dc12203
4 changed files with 141 additions and 139 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
plugin/pkg/auth/authenticator/token/oidc/oidc.go
View File

@ -33,7 +33,6 @@ import (
"fmt"
"net/http"
"net/url"
"strings"
"sync"
"sync/atomic"
@ -174,7 +173,7 @@ func (a *OIDCAuthenticator) client() (*oidc.Client, error) {
}
// Try to initialize client.
providerConfig, err := oidc.FetchProviderConfig(a.httpClient, strings.TrimSuffix(a.issuerURL, "/"))
providerConfig, err := oidc.FetchProviderConfig(a.httpClient, a.issuerURL)
if err != nil {
glog.Errorf("oidc authenticator: failed to fetch provider discovery data: %v", err)
return nil, fmt.Errorf("fetch provider config: %v", err)

220
plugin/pkg/auth/authenticator/token/oidc/oidc_test.go
View File

@ -110,14 +110,13 @@ func TestTLSConfig(t *testing.T) {
for _, tc := range tests {
func() {
op := oidctesting.NewOIDCProvider(t)
op := oidctesting.NewOIDCProvider(t, "")
srv, err := op.ServeTLSWithKeyPair(tc.serverCertFile, tc.serverKeyFile)
if err != nil {
t.Errorf("%s: %v", tc.testCase, err)
return
}
defer srv.Close()
op.AddMinimalProviderConfig(srv)
issuer := srv.URL
clientID := "client-foo"
@ -178,8 +177,6 @@ func TestTLSConfig(t *testing.T) {
}
func TestOIDCAuthentication(t *testing.T) {
var err error
cert := path.Join(os.TempDir(), "oidc-cert")
key := path.Join(os.TempDir(), "oidc-key")
@ -188,119 +185,120 @@ func TestOIDCAuthentication(t *testing.T) {
oidctesting.GenerateSelfSignedCert(t, "127.0.0.1", cert, key)
// Create a TLS server and a client.
op := oidctesting.NewOIDCProvider(t)
srv, err := op.ServeTLSWithKeyPair(cert, key)
if err != nil {
t.Fatalf("Cannot start server: %v", err)
}
defer srv.Close()
// Ensure all tests pass when the issuer is not at a base URL.
for _, path := range []string{"", "/path/with/trailing/slash/"} {
// A provider config with all required fields.
op.AddMinimalProviderConfig(srv)
tests := []struct {
userClaim string
groupsClaim string
token string
userInfo user.Info
verified bool
err string
}{
{
"sub",
"",
generateGoodToken(t, op, srv.URL, "client-foo", "client-foo", "sub", "user-foo", "", nil),
&user.DefaultInfo{Name: fmt.Sprintf("%s#%s", srv.URL, "user-foo")},
true,
"",
},
{
// Use user defined claim (email here).
"email",
"",
generateGoodToken(t, op, srv.URL, "client-foo", "client-foo", "email", "foo@example.com", "", nil),
&user.DefaultInfo{Name: "foo@example.com"},
true,
"",
},
{
// Use user defined claim (email here).
"email",
"",
generateGoodToken(t, op, srv.URL, "client-foo", "client-foo", "email", "foo@example.com", "groups", []string{"group1", "group2"}),
&user.DefaultInfo{Name: "foo@example.com"},
true,
"",
},
{
// Use user defined claim (email here).
"email",
"groups",
generateGoodToken(t, op, srv.URL, "client-foo", "client-foo", "email", "foo@example.com", "groups", []string{"group1", "group2"}),
&user.DefaultInfo{Name: "foo@example.com", Groups: []string{"group1", "group2"}},
true,
"",
},
{
"sub",
"",
generateMalformedToken(t, op, srv.URL, "client-foo", "client-foo", "sub", "user-foo", "", nil),
nil,
false,
"oidc: unable to verify JWT signature: no matching keys",
},
{
// Invalid 'aud'.
"sub",
"",
generateGoodToken(t, op, srv.URL, "client-foo", "client-bar", "sub", "user-foo", "", nil),
nil,
false,
"oidc: JWT claims invalid: invalid claims, 'aud' claim and 'client_id' do not match",
},
{
// Invalid issuer.
"sub",
"",
generateGoodToken(t, op, "http://foo-bar.com", "client-foo", "client-foo", "sub", "user-foo", "", nil),
nil,
false,
"oidc: JWT claims invalid: invalid claim value: 'iss'.",
},
{
"sub",
"",
generateExpiredToken(t, op, srv.URL, "client-foo", "client-foo", "sub", "user-foo", "", nil),
nil,
false,
"oidc: JWT claims invalid: token is expired",
},
}
for i, tt := range tests {
client, err := New(OIDCOptions{srv.URL, "client-foo", cert, tt.userClaim, tt.groupsClaim})
// Create a TLS server and a client.
op := oidctesting.NewOIDCProvider(t, path)
srv, err := op.ServeTLSWithKeyPair(cert, key)
if err != nil {
t.Errorf("Unexpected error: %v", err)
continue
t.Fatalf("Cannot start server: %v", err)
}
defer srv.Close()
tests := []struct {
userClaim string
groupsClaim string
token string
userInfo user.Info
verified bool
err string
}{
{
"sub",
"",
generateGoodToken(t, op, srv.URL, "client-foo", "client-foo", "sub", "user-foo", "", nil),
&user.DefaultInfo{Name: fmt.Sprintf("%s#%s", srv.URL, "user-foo")},
true,
"",
},
{
// Use user defined claim (email here).
"email",
"",
generateGoodToken(t, op, srv.URL, "client-foo", "client-foo", "email", "foo@example.com", "", nil),
&user.DefaultInfo{Name: "foo@example.com"},
true,
"",
},
{
// Use user defined claim (email here).
"email",
"",
generateGoodToken(t, op, srv.URL, "client-foo", "client-foo", "email", "foo@example.com", "groups", []string{"group1", "group2"}),
&user.DefaultInfo{Name: "foo@example.com"},
true,
"",
},
{
// Use user defined claim (email here).
"email",
"groups",
generateGoodToken(t, op, srv.URL, "client-foo", "client-foo", "email", "foo@example.com", "groups", []string{"group1", "group2"}),
&user.DefaultInfo{Name: "foo@example.com", Groups: []string{"group1", "group2"}},
true,
"",
},
{
"sub",
"",
generateMalformedToken(t, op, srv.URL, "client-foo", "client-foo", "sub", "user-foo", "", nil),
nil,
false,
"oidc: unable to verify JWT signature: no matching keys",
},
{
// Invalid 'aud'.
"sub",
"",
generateGoodToken(t, op, srv.URL, "client-foo", "client-bar", "sub", "user-foo", "", nil),
nil,
false,
"oidc: JWT claims invalid: invalid claims, 'aud' claim and 'client_id' do not match",
},
{
// Invalid issuer.
"sub",
"",
generateGoodToken(t, op, "http://foo-bar.com", "client-foo", "client-foo", "sub", "user-foo", "", nil),
nil,
false,
"oidc: JWT claims invalid: invalid claim value: 'iss'.",
},
{
"sub",
"",
generateExpiredToken(t, op, srv.URL, "client-foo", "client-foo", "sub", "user-foo", "", nil),
nil,
false,
"oidc: JWT claims invalid: token is expired",
},
}
user, result, err := client.AuthenticateToken(tt.token)
if tt.err != "" {
if !strings.HasPrefix(err.Error(), tt.err) {
t.Errorf("#%d: Expecting: %v..., but got: %v", i, tt.err, err)
}
} else {
for i, tt := range tests {
client, err := New(OIDCOptions{srv.URL, "client-foo", cert, tt.userClaim, tt.groupsClaim})
if err != nil {
t.Errorf("#%d: Unexpected error: %v", i, err)
t.Errorf("Unexpected error: %v", err)
continue
}
user, result, err := client.AuthenticateToken(tt.token)
if tt.err != "" {
if !strings.HasPrefix(err.Error(), tt.err) {
t.Errorf("#%d: Expecting: %v..., but got: %v", i, tt.err, err)
}
} else {
if err != nil {
t.Errorf("#%d: Unexpected error: %v", i, err)
}
}
if !reflect.DeepEqual(tt.verified, result) {
t.Errorf("#%d: Expecting: %v, but got: %v", i, tt.verified, result)
}
if !reflect.DeepEqual(tt.userInfo, user) {
t.Errorf("#%d: Expecting: %v, but got: %v", i, tt.userInfo, user)
}
client.Close()
}
if !reflect.DeepEqual(tt.verified, result) {
t.Errorf("#%d: Expecting: %v, but got: %v", i, tt.verified, result)
}
if !reflect.DeepEqual(tt.userInfo, user) {
t.Errorf("#%d: Expecting: %v, but got: %v", i, tt.userInfo, user)
}
client.Close()
}
}

54
plugin/pkg/auth/authenticator/token/oidc/testing/provider.go
View File

@ -33,6 +33,7 @@ import (
"net/http/httptest"
"net/url"
"os"
"path"
"path/filepath"
"testing"
"time"
@ -43,7 +44,7 @@ import (
)
// NewOIDCProvider provides a bare minimum OIDC IdP Server useful for testing.
func NewOIDCProvider(t *testing.T) *OIDCProvider {
func NewOIDCProvider(t *testing.T, issuerPath string) *OIDCProvider {
privKey, err := key.GeneratePrivateKey()
if err != nil {
t.Fatalf("Cannot create OIDC Provider: %v", err)
@ -51,20 +52,22 @@ func NewOIDCProvider(t *testing.T) *OIDCProvider {
}
op := &OIDCProvider{
Mux: http.NewServeMux(),
PrivKey: privKey,
Mux: http.NewServeMux(),
PrivKey: privKey,
issuerPath: issuerPath,
}
op.Mux.HandleFunc("/.well-known/openid-configuration", op.handleConfig)
op.Mux.HandleFunc("/keys", op.handleKeys)
op.Mux.HandleFunc(path.Join(issuerPath, "/.well-known/openid-configuration"), op.handleConfig)
op.Mux.HandleFunc(path.Join(issuerPath, "/keys"), op.handleKeys)
return op
}
type OIDCProvider struct {
Mux *http.ServeMux
PCFG oidc.ProviderConfig
PrivKey *key.PrivateKey
Mux *http.ServeMux
PCFG oidc.ProviderConfig
PrivKey *key.PrivateKey
issuerPath string
}
func (op *OIDCProvider) ServeTLSWithKeyPair(cert, key string) (*httptest.Server, error) {
@ -77,20 +80,31 @@ func (op *OIDCProvider) ServeTLSWithKeyPair(cert, key string) (*httptest.Server,
return nil, fmt.Errorf("Cannot load cert/key pair: %v", err)
}
srv.StartTLS()
return srv, nil
}
func (op *OIDCProvider) AddMinimalProviderConfig(srv *httptest.Server) {
// The issuer's URL is extended by an optional path. This ensures that the plugin can
// handle issuers that use a non-root path for discovery (see kubernetes/kubernetes#29749).
srv.URL = srv.URL + op.issuerPath
u, err := url.Parse(srv.URL)
if err != nil {
return nil, err
}
pathFor := func(p string) *url.URL {
u2 := *u // Shallow copy.
u2.Path = path.Join(u2.Path, p)
return &u2
}
op.PCFG = oidc.ProviderConfig{
Issuer: MustParseURL(srv.URL),
AuthEndpoint: MustParseURL(srv.URL + "/auth"),
TokenEndpoint: MustParseURL(srv.URL + "/token"),
KeysEndpoint: MustParseURL(srv.URL + "/keys"),
Issuer: u,
AuthEndpoint: pathFor("/auth"),
TokenEndpoint: pathFor("/token"),
KeysEndpoint: pathFor("/keys"),
ResponseTypesSupported: []string{"code"},
SubjectTypesSupported: []string{"public"},
IDTokenSigningAlgValues: []string{"RS256"},
}
return srv, nil
}
func (op *OIDCProvider) handleConfig(w http.ResponseWriter, req *http.Request) {
@ -122,14 +136,6 @@ func (op *OIDCProvider) handleKeys(w http.ResponseWriter, req *http.Request) {
w.Write(b)
}
func MustParseURL(s string) *url.URL {
u, err := url.Parse(s)
if err != nil {
panic(fmt.Errorf("Failed to parse url: %v", err))
}
return u
}
// generateSelfSignedCert generates a self-signed cert/key pairs and writes to the certPath/keyPath.
// This method is mostly identical to crypto.GenerateSelfSignedCert except for the 'IsCA' and 'KeyUsage'
// in the certificate template. (Maybe we can merge these two methods).

3
plugin/pkg/client/auth/oidc/oidc_test.go
View File

@ -51,13 +51,12 @@ func TestNewOIDCAuthProvider(t *testing.T) {
defer os.Remove(tempDir)
oidctesting.GenerateSelfSignedCert(t, "127.0.0.1", cert, key)
op := oidctesting.NewOIDCProvider(t)
op := oidctesting.NewOIDCProvider(t, "")
srv, err := op.ServeTLSWithKeyPair(cert, key)
if err != nil {
t.Fatalf("Cannot start server %v", err)
}
defer srv.Close()
op.AddMinimalProviderConfig(srv)
certData, err := ioutil.ReadFile(cert)
if err != nil {