Merge branch 'service-accounts' of github.com:caos/oidc into service-accounts

example/client/app/app.go

@@ -10,7 +10,6 @@ import (
 
 	"github.com/google/uuid"
 	"github.com/sirupsen/logrus"
-	"golang.org/x/oauth2"
 
 	"github.com/caos/oidc/pkg/oidc"
 	"github.com/caos/oidc/pkg/rp"
@@ -30,17 +29,13 @@ func main() {
 
 	ctx := context.Background()
 
-	rpConfig := &rp.Configuration{
+	redirectURI := fmt.Sprintf("http://localhost:%v%v", port, callbackPath)
-		Issuer: issuer,
+	scopes := []string{oidc.ScopeOpenID, oidc.ScopeProfile, oidc.ScopeEmail}
-		Config: &oauth2.Config{
-			ClientID:     clientID,
-			ClientSecret: clientSecret,
-			RedirectURL:  fmt.Sprintf("http://localhost:%v%v", port, callbackPath),
-			Scopes:       []string{oidc.ScopeOpenID, oidc.ScopeProfile, oidc.ScopeEmail},
-		},
-	}
 	cookieHandler := utils.NewCookieHandler(key, key, utils.WithUnsecure())
-	provider, err := rp.NewRelayingParty(rpConfig, rp.WithCookieHandler(cookieHandler), rp.WithPKCE(cookieHandler), rp.WithVerifierOpts(rp.WithIssuedAtOffset(-3*time.Minute))) //,
+	provider, err := rp.NewRelayingPartyOIDC(issuer, clientID, clientSecret, redirectURI, scopes,
+		rp.WithPKCE(cookieHandler),
+		rp.WithVerifierOpts(rp.WithIssuedAtOffset(5*time.Second)),
+	)
 	if err != nil {
 		logrus.Fatalf("error creating provider %s", err.Error())
 	}

example/client/github/github.go

@@ -5,10 +5,14 @@ import (
 	"fmt"
 	"os"
 
-	"github.com/caos/oidc/pkg/cli"
-	"github.com/caos/oidc/pkg/rp"
 	"github.com/google/go-github/v31/github"
+	"github.com/google/uuid"
+	"golang.org/x/oauth2"
 	githubOAuth "golang.org/x/oauth2/github"
+
+	"github.com/caos/oidc/pkg/rp"
+	"github.com/caos/oidc/pkg/rp/cli"
+	"github.com/caos/oidc/pkg/utils"
 )
 
 var (
@@ -21,23 +25,32 @@ func main() {
 	clientSecret := os.Getenv("CLIENT_SECRET")
 	port := os.Getenv("PORT")
 
-	rpConfig := &rp.Config{
+	rpConfig := &oauth2.Config{
 		ClientID:     clientID,
 		ClientSecret: clientSecret,
-		CallbackURL:  fmt.Sprintf("http://localhost:%v%v", port, callbackPath),
+		RedirectURL:  fmt.Sprintf("http://localhost:%v%v", port, callbackPath),
 		Scopes:       []string{"repo", "repo_deployment"},
-		Endpoints:    githubOAuth.Endpoint,
+		Endpoint:     githubOAuth.Endpoint,
 	}
 
-	oauth2Client := cli.CodeFlowForClient(rpConfig, key, callbackPath, port)
-
-	client := github.NewClient(oauth2Client)
-
 	ctx := context.Background()
-	_, _, err := client.Users.Get(ctx, "")
+	cookieHandler := utils.NewCookieHandler(key, key, utils.WithUnsecure())
+	relayingParty, err := rp.NewRelayingPartyOAuth(rpConfig, rp.WithCookieHandler(cookieHandler))
 	if err != nil {
-		fmt.Println("OAuth flow failed")
+		fmt.Printf("error creating relaying party: %v", err)
-	} else {
+		return
-		fmt.Println("OAuth flow success")
 	}
+	state := func() string {
+		return uuid.New().String()
+	}
+	token := cli.CodeFlow(relayingParty, callbackPath, port, state)
+
+	client := github.NewClient(relayingParty.Client(ctx, token.Token))
+
+	_, _, err = client.Users.Get(ctx, "")
+	if err != nil {
+		fmt.Printf("error %v", err)
+		return
+	}
+	fmt.Println("call succeeded")
 }

pkg/cli/cli.go

@@ -1,121 +0,0 @@
-package cli
-
-import (
-	"context"
-	"fmt"
-	"log"
-	"net/http"
-	"strings"
-	"time"
-
-	"github.com/google/uuid"
-	"github.com/sirupsen/logrus"
-
-	"github.com/caos/oidc/pkg/oidc"
-	"github.com/caos/oidc/pkg/rp"
-	"github.com/caos/oidc/pkg/utils"
-)
-
-func CodeFlow(rpc *rp.Configuration, key []byte, callbackPath string, port string) *oidc.Tokens {
-	cookieHandler := utils.NewCookieHandler(key, key, utils.WithUnsecure())
-	provider, err := rp.NewRelayingParty(rpc, rp.WithCookieHandler(cookieHandler))
-	if err != nil {
-		logrus.Fatalf("error creating provider %s", err.Error())
-	}
-
-	return codeFlow(provider, callbackPath, port)
-}
-
-func TokenForClient(rpc *rp.Configuration, key []byte, token *oidc.Tokens) *http.Client {
-	cookieHandler := utils.NewCookieHandler(key, key, utils.WithUnsecure())
-	provider, err := rp.NewRelayingParty(rpc, rp.WithCookieHandler(cookieHandler))
-	if err != nil {
-		logrus.Fatalf("error creating provider %s", err.Error())
-	}
-
-	return provider.Client(context.Background(), token.Token)
-}
-
-func CodeFlowForClient(rpc *rp.Configuration, key []byte, callbackPath string, port string) *http.Client {
-	cookieHandler := utils.NewCookieHandler(key, key, utils.WithUnsecure())
-	provider, err := rp.NewRelayingParty(rpc, rp.WithCookieHandler(cookieHandler))
-	if err != nil {
-		logrus.Fatalf("error creating provider %s", err.Error())
-	}
-	token := codeFlow(provider, callbackPath, port)
-
-	return provider.Client(context.Background(), token.Token)
-}
-
-func codeFlow(provider rp.RelayingParty, callbackPath string, port string) *oidc.Tokens {
-	loginPath := "/login"
-	portStr := port
-	if !strings.HasPrefix(port, ":") {
-		portStr = strings.Join([]string{":", portStr}, "")
-	}
-
-	getToken, setToken := getAndSetTokens()
-
-	state := func() string {
-		return uuid.New().String()
-	}
-	http.Handle(loginPath, rp.AuthURLHandler(state, provider))
-
-	marshal := func(w http.ResponseWriter, r *http.Request, tokens *oidc.Tokens, state string) {
-		setToken(w, tokens)
-	}
-	http.Handle(callbackPath, rp.CodeExchangeHandler(marshal, provider))
-
-	// start  http-server
-	stopHttpServer := startHttpServer(portStr)
-
-	// open browser in different window
-	utils.OpenBrowser(strings.Join([]string{"http://localhost", portStr, loginPath}, ""))
-
-	// wait until user is logged into browser
-	ret := getToken()
-
-	// stop http-server as no callback is needed anymore
-	stopHttpServer()
-
-	// return tokens
-	return ret
-}
-
-func startHttpServer(port string) func() {
-	srv := &http.Server{Addr: port}
-	go func() {
-
-		// always returns error. ErrServerClosed on graceful close
-		if err := srv.ListenAndServe(); err != http.ErrServerClosed {
-			// unexpected error. port in use?
-			log.Fatalf("ListenAndServe(): %v", err)
-		}
-	}()
-
-	return func() {
-		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
-		defer cancel()
-
-		if err := srv.Shutdown(ctx); err != nil {
-			log.Fatalf("Shutdown(): %v", err)
-		}
-	}
-}
-
-func getAndSetTokens() (func() *oidc.Tokens, func(w http.ResponseWriter, tokens *oidc.Tokens)) {
-	marshalChan := make(chan *oidc.Tokens)
-
-	getToken := func() *oidc.Tokens {
-		return <-marshalChan
-	}
-	setToken := func(w http.ResponseWriter, tokens *oidc.Tokens) {
-		marshalChan <- tokens
-
-		msg := "<p><strong>Success!</strong></p>"
-		msg = msg + "<p>You are authenticated and can now return to the CLI.</p>"
-		fmt.Fprintf(w, msg)
-	}
-
-	return getToken, setToken
-}

pkg/rp/cli/cli.go

@@ -0,0 +1,35 @@
+package cli
+
+import (
+	"context"
+	"net/http"
+
+	"github.com/caos/oidc/pkg/oidc"
+	"github.com/caos/oidc/pkg/rp"
+	"github.com/caos/oidc/pkg/utils"
+)
+
+const (
+	loginPath = "/login"
+)
+
+func CodeFlow(relayingParty rp.RelayingParty, callbackPath, port string, stateProvider func() string) *oidc.Tokens {
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	var token *oidc.Tokens
+	callback := func(w http.ResponseWriter, r *http.Request, tokens *oidc.Tokens, state string) {
+		token = tokens
+		msg := "<p><strong>Success!</strong></p>"
+		msg = msg + "<p>You are authenticated and can now return to the CLI.</p>"
+		w.Write([]byte(msg))
+	}
+	http.Handle(loginPath, rp.AuthURLHandler(stateProvider, relayingParty))
+	http.Handle(callbackPath, rp.CodeExchangeHandler(callback, relayingParty))
+
+	utils.StartServer(ctx, port)
+
+	utils.OpenBrowser("http://localhost:" + port + loginPath)
+
+	return token
+}

pkg/rp/relaying_party.go

@@ -40,30 +40,31 @@ type RelayingParty interface {
 	ErrorHandler() func(http.ResponseWriter, *http.Request, string, string, string)
 }
 
+type ErrorHandler func(w http.ResponseWriter, r *http.Request, errorType string, errorDesc string, state string)
+
 var (
-	DefaultErrorHandler = func(w http.ResponseWriter, r *http.Request, errorType string, errorDesc string, state string) {
+	DefaultErrorHandler ErrorHandler = func(w http.ResponseWriter, r *http.Request, errorType string, errorDesc string, state string) {
 		http.Error(w, errorType+": "+errorDesc, http.StatusInternalServerError)
 	}
 )
 
 type relayingParty struct {
+	issuer      string
 	endpoints   Endpoints
-
+	oauthConfig *oauth2.Config
-	config *Configuration
+	oauth2Only  bool
 	pkce        bool
 
 	httpClient    *http.Client
 	cookieHandler *utils.CookieHandler
-
 	errorHandler  func(http.ResponseWriter, *http.Request, string, string, string)
 
 	idTokenVerifier IDTokenVerifier
 	verifierOpts    []VerifierOption
-	oauth2Only      bool
 }
 
 func (rp *relayingParty) OAuthConfig() *oauth2.Config {
-	return rp.config.Config
+	return rp.oauthConfig
 }
 
 func (rp *relayingParty) IsPKCE() bool {
@@ -84,65 +85,28 @@ func (rp *relayingParty) IsOAuth2Only() bool {
 
 func (rp *relayingParty) IDTokenVerifier() IDTokenVerifier {
 	if rp.idTokenVerifier == nil {
-		rp.idTokenVerifier = NewIDTokenVerifier(rp.config.Issuer, rp.config.ClientID, NewRemoteKeySet(rp.httpClient, rp.endpoints.JKWsURL), rp.verifierOpts...)
+		rp.idTokenVerifier = NewIDTokenVerifier(rp.issuer, rp.oauthConfig.ClientID, NewRemoteKeySet(rp.httpClient, rp.endpoints.JKWsURL), rp.verifierOpts...)
 	}
 	return rp.idTokenVerifier
 }
 
 func (rp *relayingParty) Client(ctx context.Context, token *oauth2.Token) *http.Client {
-	return rp.config.Config.Client(ctx, token)
+	return rp.oauthConfig.Client(ctx, token)
 }
 
 func (rp *relayingParty) ErrorHandler() func(http.ResponseWriter, *http.Request, string, string, string) {
-	return rp.errorHandler
-}
-
-//NewRelayingParty creates a DelegationTokenExchangeRP with the given
-//Config and possible configOptions
-//it will run discovery on the provided issuer if AuthURL and TokenURL are not set
-//if no verifier is provided using the options the `DefaultVerifier` is set
-func NewRelayingParty(config *Configuration, options ...Option) (RelayingParty, error) {
-	isOpenID := isOpenID(config.Scopes)
-
-	rp := &relayingParty{
-		config:     config,
-		httpClient: utils.DefaultHTTPClient,
-		oauth2Only: !isOpenID,
-	}
-
-	for _, optFunc := range options {
-		optFunc(rp)
-	}
-
-	if isOpenID && config.Endpoint.AuthURL == "" && config.Endpoint.TokenURL == "" {
-		endpoints, err := Discover(config.Issuer, rp.httpClient)
-		if err != nil {
-			return nil, err
-		}
-		rp.config.Endpoint = endpoints.Endpoint
-		rp.endpoints = endpoints
-	}
-
 	if rp.errorHandler == nil {
 		rp.errorHandler = DefaultErrorHandler
 	}
-
+	return rp.errorHandler
-	if isOpenID && rp.idTokenVerifier == nil {
-		rp.idTokenVerifier = NewIDTokenVerifier(config.Issuer, config.ClientID, NewRemoteKeySet(rp.httpClient, rp.endpoints.JKWsURL))
 }
 
-	return rp, nil
+//NewRelayingPartyOAuth creates an (OAuth2) RelayingParty with the given
-}
+//OAuth2 Config and possible configOptions
-
+//it will use the AuthURL and TokenURL set in config
-func NewRelayingParty2(clientID, clientSecret, redirectURI string, options ...Option) (RelayingParty, error) {
+func NewRelayingPartyOAuth(config *oauth2.Config, options ...Option) (RelayingParty, error) {
 	rp := &relayingParty{
-		config: &Configuration{
+		oauthConfig: config,
-			Config: &oauth2.Config{
-				ClientID:     clientID,
-				ClientSecret: clientSecret,
-				RedirectURL:  redirectURI,
-			},
-		},
 		httpClient:  utils.DefaultHTTPClient,
 		oauth2Only:  true,
 	}
@@ -151,28 +115,37 @@ func NewRelayingParty2(clientID, clientSecret, redirectURI string, options ...Op
 		optFunc(rp)
 	}
 
-	if !rp.oauth2Only && rp.config.Endpoint.AuthURL == "" && rp.config.Endpoint.TokenURL == "" {
-		endpoints, err := Discover(rp.config.Issuer, rp.httpClient)
-		if err != nil {
-			return nil, err
-		}
-		rp.config.Endpoint = endpoints.Endpoint
-		rp.endpoints = endpoints
-	}
-
-	if rp.errorHandler == nil {
-		rp.errorHandler = DefaultErrorHandler
-	}
-
 	return rp, nil
 }
 
-func WithOIDC(issuer string, scopes []string) Option {
+//NewRelayingPartyOIDC creates an (OIDC) RelayingParty with the given
-	return func(rp *relayingParty) {
+//issuer, clientID, clientSecret, redirectURI, scopes and possible configOptions
-		rp.config.Issuer = issuer
+//it will run discovery on the provided issuer and use the found endpoints
-		rp.config.Scopes = scopes
+func NewRelayingPartyOIDC(issuer, clientID, clientSecret, redirectURI string, scopes []string, options ...Option) (RelayingParty, error) {
-		rp.oauth2Only = false
+	rp := &relayingParty{
+		issuer: issuer,
+		oauthConfig: &oauth2.Config{
+			ClientID:     clientID,
+			ClientSecret: clientSecret,
+			RedirectURL:  redirectURI,
+			Scopes:       scopes,
+		},
+		httpClient: utils.DefaultHTTPClient,
+		oauth2Only: false,
 	}
+
+	for _, optFunc := range options {
+		optFunc(rp)
+	}
+
+	endpoints, err := Discover(rp.issuer, rp.httpClient)
+	if err != nil {
+		return nil, err
+	}
+	rp.oauthConfig.Endpoint = endpoints.Endpoint
+	rp.endpoints = endpoints
+
+	return rp, nil
 }
 
 //DefaultRPOpts is the type for providing dynamic options to the DefaultRP
@@ -202,6 +175,12 @@ func WithHTTPClient(client *http.Client) Option {
 	}
 }
 
+func WithErrorHandler(errorHandler ErrorHandler) Option {
+	return func(rp *relayingParty) {
+		rp.errorHandler = errorHandler
+	}
+}
+
 func WithVerifierOpts(opts ...VerifierOption) Option {
 	return func(rp *relayingParty) {
 		rp.verifierOpts = opts
@@ -433,12 +412,3 @@ func WithCodeVerifier(codeVerifier string) CodeExchangeOpt {
 		return []oauth2.AuthCodeOption{oauth2.SetAuthURLParam("code_verifier", codeVerifier)}
 	}
 }
-
-func isOpenID(scopes []string) bool {
-	for _, scope := range scopes {
-		if scope == oidc.ScopeOpenID {
-			return true
-		}
-	}
-	return false
-}

pkg/utils/http.go

@@ -1,9 +1,11 @@
 package utils
 
 import (
+	"context"
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
+	"log"
 	"net/http"
 	"net/url"
 	"strings"
@@ -79,3 +81,18 @@ func URLEncodeResponse(resp interface{}, encoder Encoder) (string, error) {
 	v := url.Values(values)
 	return v.Encode(), nil
 }
+
+func StartServer(ctx context.Context, port string) {
+	server := &http.Server{Addr: port}
+	go func() {
+		if err := server.ListenAndServe(); err != http.ErrServerClosed {
+			log.Fatalf("ListenAndServe(): %v", err)
+		}
+	}()
+
+	go func() {
+		<-ctx.Done()
+		err := server.Shutdown(ctx)
+		log.Fatalf("Shutdown(): %v", err)
+	}()
+}