Merge pull request #30 from Clarilab/add-grpc-authentication

feat: add grpc authentication interceptors

go.mod

@@ -3,18 +3,23 @@ module github.com/Clarilab/gocloaksession
 go 1.21
 
 require (
-	github.com/Nerzal/gocloak/v13 v13.8.0
-	github.com/go-resty/resty/v2 v2.9.1
+	github.com/Nerzal/gocloak/v13 v13.9.0
+	github.com/go-resty/resty/v2 v2.13.1
 	github.com/pkg/errors v0.9.1
 	github.com/stretchr/testify v1.9.0
+	google.golang.org/grpc v1.64.0
 )
 
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/golang-jwt/jwt/v4 v4.5.0 // indirect
+	github.com/golang-jwt/jwt/v5 v5.0.0 // indirect
 	github.com/opentracing/opentracing-go v1.2.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/segmentio/ksuid v1.0.4 // indirect
-	golang.org/x/net v0.19.0 // indirect
+	golang.org/x/net v0.26.0 // indirect
+	golang.org/x/sys v0.21.0 // indirect
+	golang.org/x/text v0.16.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240318140521-94a12d6c2237 // indirect
+	google.golang.org/protobuf v1.33.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,12 +1,14 @@
-github.com/Nerzal/gocloak/v13 v13.8.0 h1:7s9cK8X3vy8OIic+pG4POE9vGy02tSHkMhvWXv0P2m8=
-github.com/Nerzal/gocloak/v13 v13.8.0/go.mod h1:rRBtEdh5N0+JlZZEsrfZcB2sRMZWbgSxI2EIv9jpJp4=
+github.com/Nerzal/gocloak/v13 v13.9.0 h1:YWsJsdM5b0yhM2Ba3MLydiOlujkBry4TtdzfIzSVZhw=
+github.com/Nerzal/gocloak/v13 v13.9.0/go.mod h1:YYuDcXZ7K2zKECyVP7pPqjKxx2AzYSpKDj8d6GuyM10=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/go-resty/resty/v2 v2.9.1 h1:PIgGx4VrHvag0juCJ4dDv3MiFRlDmP0vicBucwf+gLM=
-github.com/go-resty/resty/v2 v2.9.1/go.mod h1:4/GYJVjh9nhkhGR6AUNW3XhpDYNUr+Uvy9gV/VGZIy4=
-github.com/golang-jwt/jwt/v4 v4.5.0 h1:7cYmW1XlMY7h7ii7UhUyChSgS5wUJEnm9uZVTGqOWzg=
-github.com/golang-jwt/jwt/v4 v4.5.0/go.mod h1:m21LjoU+eqJr34lmDMbreY2eSTRJ1cv77w39/MY0Ch0=
+github.com/go-resty/resty/v2 v2.13.1 h1:x+LHXBI2nMB1vqndymf26quycC4aggYJ7DECYbiz03g=
+github.com/go-resty/resty/v2 v2.13.1/go.mod h1:GznXlLxkq6Nh4sU59rPmUw3VtgpO3aS96ORAI6Q7d+0=
+github.com/golang-jwt/jwt/v5 v5.0.0 h1:1n1XNM9hk7O9mnQoNBGolZvzebBQ7p93ULHRc28XJUE=
+github.com/golang-jwt/jwt/v5 v5.0.0/go.mod h1:pqrtFR0X4osieyHYxtmOUWsAWrfe1Q5UVIyoH402zdk=
+github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
+github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/opentracing/opentracing-go v1.2.0 h1:uEJPy/1a5RIPAJ0Ov+OIO8OxWu77jEv+1B0VhjKrZUs=
 github.com/opentracing/opentracing-go v1.2.0/go.mod h1:GxEUsuufX4nBwe+T+Wl9TAgYrxe9dPLANfrWvHYVTgc=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
@@ -22,19 +24,21 @@ github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/crypto v0.13.0/go.mod h1:y6Z2r+Rw4iayiXXAIxJIDAJ1zMW4yaTpebo8fPOliYc=
-golang.org/x/crypto v0.16.0 h1:mMMrFzRSCF0GvB7Ne27XVtVAaXLrPmgPC7/v0tkwHaY=
-golang.org/x/crypto v0.16.0/go.mod h1:gCAAfMLgwOJRpTjQ2zCCt2OcSfYMTeZVSRtQlPC7Nq4=
+golang.org/x/crypto v0.19.0/go.mod h1:Iy9bg/ha4yyC70EfRS8jz+B6ybOBKMaSxLj6P6oBDfU=
+golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8=
+golang.org/x/crypto v0.24.0 h1:mnl8DM0o513X8fdIkmyFE/5hTYxbwYOjDS/+rK6qpRI=
+golang.org/x/crypto v0.24.0/go.mod h1:Z1PMYSOR5nyMcyAVAIQSKCDwalqy85Aqn1x3Ws4L5DM=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
 golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
 golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
-golang.org/x/net v0.15.0/go.mod h1:idbUs1IY1+zTqbi8yxTbhexhEEk5ur9LInksu6HrEpk=
-golang.org/x/net v0.19.0 h1:zTwKpTd2XuCqf8huc7Fo2iSy+4RHPd10s4KzeTnVr1c=
-golang.org/x/net v0.19.0/go.mod h1:CfAk/cbD4CthTvqiEl8NpboMuiuOYsAr/7NOjZJtv1U=
+golang.org/x/net v0.21.0/go.mod h1:bIjVDfnllIU7BJ2DNgfnXvpSvtn8VRwhlsaeUTyUS44=
+golang.org/x/net v0.25.0/go.mod h1:JkAGAh7GEvH74S6FOH42FLoXpXbE/aqXSrIQjXgsiwM=
+golang.org/x/net v0.26.0 h1:soB7SVo0PWrY4vPW/+ay0jKDNScG2X9wFeYlXIvJsOQ=
+golang.org/x/net v0.26.0/go.mod h1:5YKkiSynbBIh3p6iOc/vibscux0x38BZDkn8sCUPxHE=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -45,25 +49,38 @@ golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.21.0 h1:rF+pYz3DAGSQAxAu1CbC7catZg4ebC4UIeIhKxBZvws=
+golang.org/x/sys v0.21.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
 golang.org/x/term v0.8.0/go.mod h1:xPskH00ivmX89bAKVGSKKtLOWNx2+17Eiy94tnKShWo=
-golang.org/x/term v0.12.0/go.mod h1:owVbMEjm3cBLCHdkQu9b1opXd4ETQWc3BhuQGKgXgvU=
+golang.org/x/term v0.17.0/go.mod h1:lLRBjIVuehSbZlaOtGMbcMncT+aqLLLmKrsjNrUguwk=
+golang.org/x/term v0.20.0/go.mod h1:8UkIAJTvZgivsXaD6/pH6U9ecQzZ45awqEOzuCvwpFY=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
-golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
-golang.org/x/time v0.0.0-20211116232009-f0f3c7e86c11 h1:GZokNIeuVkl3aZHJchRrr13WCsols02MLUcz1U9is6M=
-golang.org/x/time v0.0.0-20211116232009-f0f3c7e86c11/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/text v0.16.0 h1:a94ExnEXNtEwYLGJSIUxnWoxoRz/ZcCsV63ROupILh4=
+golang.org/x/text v0.16.0/go.mod h1:GhwF1Be+LQoKShO3cGOHzqOgRrGaYc9AvblQOmPVHnI=
+golang.org/x/time v0.5.0 h1:o7cqy6amK/52YcAKIPlM3a+Fpj35zvRj2TP+e1xFSfk=
+golang.org/x/time v0.5.0/go.mod h1:3BpzKBy/shNhVucY/MWOyx10tF3SFh9QdLuxbVysPQM=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240318140521-94a12d6c2237 h1:NnYq6UN9ReLM9/Y01KWNOWyI5xQ9kbIms5GGJVwS/Yc=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240318140521-94a12d6c2237/go.mod h1:WtryC6hu0hhx87FDGxWCDptyssuo68sk10vYjF+T9fY=
+google.golang.org/grpc v1.64.0 h1:KH3VH9y/MgNQg1dE7b3XfVK0GsPSIzJwdF617gUSbvY=
+google.golang.org/grpc v1.64.0/go.mod h1:oxjF8E3FBnjp+/gVFYdWacaLDx9na1aqy9oovLpxQYg=
+google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
+google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=

gocloaksession.go

@@ -3,16 +3,26 @@ package gocloaksession
 import (
 	"github.com/Nerzal/gocloak/v13"
 	"github.com/go-resty/resty/v2"
+	"google.golang.org/grpc"
 )
 
 // GoCloakSession holds all callable methods
 type GoCloakSession interface {
-	// GetKeycloakAuthToken returns a JWT object, containing the AccessToken and more
+	// GetKeycloakAuthToken returns a JWT object, containing the AccessToken and more.
 	GetKeycloakAuthToken() (*gocloak.JWT, error)
 
-	// AddAuthTokenToRequest sets the Authentication Header for the response
+	// AddAuthTokenToRequest is a middleware for resty that sets the
+	// Authorization header on the request.
 	AddAuthTokenToRequest(*resty.Client, *resty.Request) error
 
+	// GRPCUnaryAuthenticate is an unary client interceptor for setting the
+	// Authorization Header on gRPC requests.
+	GRPCUnaryAuthenticate() grpc.UnaryClientInterceptor
+
+	// GRPCUnaryAuthenticate is a stream client interceptor for that setting the
+	// Authorization Header on gRPC requests.
+	GRPCStreamAuthenticate() grpc.StreamClientInterceptor
+
 	// GetGoCloakInstance returns the currently used GoCloak instance.
 	GetGoCloakInstance() *gocloak.GoCloak
 

session.go

@@ -8,6 +8,13 @@ import (
 	"github.com/Nerzal/gocloak/v13"
 	"github.com/go-resty/resty/v2"
 	"github.com/pkg/errors"
+
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/metadata"
+)
+
+const (
+	headerAuthorization = "Authorization"
 )
 
 // FunctionalOption configures a Session
@@ -166,11 +173,8 @@ func (s *goCloakSession) isRefreshTokenValid() bool {
 	}
 
 	sessionExpiry := s.token.RefreshExpiresIn - s.prematureRefreshTokenRefreshThreshold
-	if int(time.Since(*s.lastRequest).Seconds()) > sessionExpiry {
-		return false
-	}
 
-	return true
+	return int(time.Since(*s.lastRequest).Seconds()) <= sessionExpiry
 }
 
 func (s *goCloakSession) refreshToken() error {
@@ -221,11 +225,68 @@ func (s *goCloakSession) AddAuthTokenToRequest(client *resty.Client, request *re
 		tokenType = token.TokenType
 	}
 
-	request.Header.Set("Authorization", tokenType+" "+token.AccessToken)
+	request.Header.Set(headerAuthorization, tokenType+" "+token.AccessToken)
 
 	return nil
 }
 
+func (s *goCloakSession) GRPCUnaryAuthenticate() grpc.UnaryClientInterceptor {
+	return func(
+		ctx context.Context,
+		method string,
+		req, reply any,
+		cc *grpc.ClientConn,
+		invoker grpc.UnaryInvoker,
+		opts ...grpc.CallOption,
+	) error {
+		token, err := s.GetKeycloakAuthToken()
+		if err != nil {
+			return err
+		}
+
+		var tokenType string
+		switch token.TokenType {
+		case "bearer":
+			tokenType = "Bearer"
+		default:
+			tokenType = token.TokenType
+		}
+
+		ctx = metadata.AppendToOutgoingContext(ctx, headerAuthorization, tokenType+" "+token.AccessToken)
+
+		return invoker(ctx, method, req, reply, cc, opts...)
+	}
+}
+
+func (s *goCloakSession) GRPCStreamAuthenticate() grpc.StreamClientInterceptor {
+	return func(
+		ctx context.Context,
+		desc *grpc.StreamDesc,
+		cc *grpc.ClientConn,
+		method string,
+		streamer grpc.Streamer,
+		opts ...grpc.CallOption,
+	) (grpc.ClientStream, error) {
+		token, err := s.GetKeycloakAuthToken()
+		if err != nil {
+			return nil, err
+		}
+
+		var tokenType string
+		switch token.TokenType {
+		case "bearer":
+			tokenType = "Bearer"
+		default:
+			tokenType = token.TokenType
+		}
+
+		ctx = metadata.AppendToOutgoingContext(ctx, headerAuthorization, tokenType+" "+token.AccessToken)
+
+		return streamer(ctx, desc, cc, method, opts...)
+	}
+}
+
+// Stream creates a stream client interceptor.
 func (s *goCloakSession) GetGoCloakInstance() *gocloak.GoCloak {
 	return s.gocloak
 }

session_test.go

@@ -22,7 +22,7 @@ func initializeSession(t testing.TB) gocloaksession.GoCloakSession {
 		t.FailNow()
 	}
 
-	return session.(gocloaksession.GoCloakSession)
+	return session
 }
 
 func Test_Integration_GetKeycloakAuthToken_Authentication(t *testing.T) {