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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| package controller | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| "time" | ||
|
|
||
| "github.com/golang-jwt/jwt/v5" | ||
| "github.com/google/uuid" | ||
| ) | ||
|
|
||
| type JWTSecret struct { | ||
| Key string `json:"key"` | ||
| Type string `json:"type"` | ||
| Issuer string `json:"issuer"` | ||
| ClaimsNamespace string `json:"claims_namespace"` | ||
| } | ||
|
|
||
| func decodeJWTSecret(jwtSecretb []byte) (JWTSecret, error) { | ||
| var jwtSecret JWTSecret | ||
| if err := json.Unmarshal(jwtSecretb, &jwtSecret); err != nil { | ||
| return JWTSecret{}, fmt.Errorf("error unmarshalling jwt secret: %w", err) | ||
| } | ||
|
|
||
| if jwtSecret.Issuer == "" { | ||
| jwtSecret.Issuer = "hasura-auth" | ||
| } | ||
|
|
||
| if jwtSecret.ClaimsNamespace == "" { | ||
| jwtSecret.ClaimsNamespace = "https://hasura.io/jwt/claims" | ||
| } | ||
|
|
||
| return jwtSecret, nil | ||
| } | ||
|
|
||
| func JWTGetterFn( | ||
| jwtSecretb []byte, | ||
| accessTokenExpiresIn time.Duration, | ||
| ) ( | ||
| func(userID uuid.UUID) (string, error), | ||
| error, | ||
| ) { | ||
| jwtSecret, err := decodeJWTSecret(jwtSecretb) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| mySigningKey := []byte(jwtSecret.Key) | ||
| method := jwt.GetSigningMethod(jwtSecret.Type) | ||
|
|
||
| return func(userID uuid.UUID) (string, error) { | ||
| now := time.Now() | ||
| iat := now.Unix() | ||
| exp := now.Add(accessTokenExpiresIn).Unix() | ||
|
|
||
| // Create the Claims | ||
| claims := &jwt.MapClaims{ | ||
| "sub": userID.String(), | ||
| "iss": jwtSecret.Issuer, | ||
| "iat": iat, | ||
| "exp": exp, | ||
| jwtSecret.ClaimsNamespace: map[string]any{ | ||
| "x-hasura-allowed-roles": []string{ | ||
| "admin", | ||
| "user", | ||
| "project_manager", | ||
| "anonymous", | ||
| }, | ||
| "x-hasura-default-role": "user", | ||
| "x-hasura-user-id": userID.String(), | ||
| "x-hasura-user-isAnonymous": "false", | ||
| }, | ||
| } | ||
| token := jwt.NewWithClaims(method, claims) | ||
| ss, err := token.SignedString(mySigningKey) | ||
| if err != nil { | ||
| return "", fmt.Errorf("error signing token: %w", err) | ||
| } | ||
|
|
||
| return ss, nil | ||
| }, nil | ||
| } | ||
|
|
||
| func JWTValidateFn( | ||
| jwtSecretb []byte, | ||
| ) ( | ||
| func(jwt string) (*jwt.Token, error), | ||
| error, | ||
| ) { | ||
| jwtSecret, err := decodeJWTSecret(jwtSecretb) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| mySigningKey := []byte(jwtSecret.Key) | ||
|
|
||
| return func(accessToken string) (*jwt.Token, error) { | ||
| jwtToken, err := jwt.Parse( | ||
| accessToken, | ||
| func(token *jwt.Token) (interface{}, error) { | ||
| return mySigningKey, nil | ||
| }, | ||
| jwt.WithValidMethods([]string{jwtSecret.Type}), | ||
| jwt.WithIssuer(jwtSecret.Issuer), | ||
| jwt.WithIssuedAt(), | ||
| jwt.WithExpirationRequired(), | ||
| ) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("error parsing token: %w", err) | ||
| } | ||
| return jwtToken, nil | ||
| }, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,166 @@ | ||
| package controller_test | ||
|
|
||
| import ( | ||
| "crypto" | ||
| "testing" | ||
| "time" | ||
|
|
||
| "github.com/golang-jwt/jwt/v5" | ||
| "github.com/google/go-cmp/cmp" | ||
| "github.com/google/go-cmp/cmp/cmpopts" | ||
| "github.com/google/uuid" | ||
| "github.com/nhost/hasura-auth/go/controller" | ||
| ) | ||
|
|
||
| //nolint:lll,gochecknoglobals | ||
| var ( | ||
| jwtSecret = []byte(`{"type":"HS256", "key":"5152fa850c02dc222631cca898ed1485821a70912a6e3649c49076912daa3b62182ba013315915d64f40cddfbb8b58eb5bd11ba225336a6af45bbae07ca873f3"}`) | ||
| jwtSecretWithIssuer = []byte(`{"type":"HS256", "key":"5152fa850c02dc222631cca898ed1485821a70912a6e3649c49076912daa3b62182ba013315915d64f40cddfbb8b58eb5bd11ba225336a6af45bbae07ca873f3","issuer":"some-issuer"}`) | ||
| jwtSecretWithClaimsNamespace = []byte(`{"type":"HS256", "key":"5152fa850c02dc222631cca898ed1485821a70912a6e3649c49076912daa3b62182ba013315915d64f40cddfbb8b58eb5bd11ba225336a6af45bbae07ca873f3","claims_namespace":"some/namespace"}`) | ||
| ) | ||
|
|
||
| func TestGetJWTFunc(t *testing.T) { | ||
| t.Parallel() | ||
|
|
||
| userID := uuid.MustParse("585e21fc-3664-4d03-8539-69945342a4f4") | ||
|
|
||
| cases := []struct { | ||
| name string | ||
| key []byte | ||
| userID uuid.UUID | ||
| expiresIn time.Duration | ||
| expectedToken *jwt.Token | ||
| }{ | ||
| { | ||
| name: "with valid key", | ||
| key: jwtSecret, | ||
| userID: userID, | ||
| expiresIn: time.Hour, | ||
| expectedToken: &jwt.Token{ | ||
| Raw: "ignored", | ||
| Method: &jwt.SigningMethodHMAC{Name: "HS256", Hash: crypto.SHA256}, | ||
| Header: map[string]interface{}{"alg": string("HS256"), "typ": string("JWT")}, | ||
| Claims: jwt.MapClaims{ | ||
| "exp": float64(1.708103735e+09), | ||
| "https://hasura.io/jwt/claims": map[string]interface{}{ | ||
| "x-hasura-allowed-roles": []interface{}{ | ||
| string("admin"), | ||
| string("user"), | ||
| string("project_manager"), | ||
| string("anonymous"), | ||
| }, | ||
| "x-hasura-default-role": string("user"), | ||
| "x-hasura-user-id": string("585e21fc-3664-4d03-8539-69945342a4f4"), | ||
| "x-hasura-user-isAnonymous": string("false"), | ||
| }, | ||
| "iat": float64(1.708100135e+09), | ||
| "iss": string("hasura-auth"), | ||
| "sub": string("585e21fc-3664-4d03-8539-69945342a4f4"), | ||
| }, | ||
| Signature: []uint8{}, | ||
| Valid: true, | ||
| }, | ||
| }, | ||
|
|
||
| { | ||
| name: "with valid key with issuer", | ||
| key: jwtSecretWithIssuer, | ||
| userID: userID, | ||
| expiresIn: time.Hour, | ||
| expectedToken: &jwt.Token{ | ||
| Raw: "ignored", | ||
| Method: &jwt.SigningMethodHMAC{Name: "HS256", Hash: crypto.SHA256}, | ||
| Header: map[string]interface{}{"alg": string("HS256"), "typ": string("JWT")}, | ||
| Claims: jwt.MapClaims{ | ||
| "exp": float64(1.708103735e+09), | ||
| "https://hasura.io/jwt/claims": map[string]interface{}{ | ||
| "x-hasura-allowed-roles": []interface{}{ | ||
| string("admin"), | ||
| string("user"), | ||
| string("project_manager"), | ||
| string("anonymous"), | ||
| }, | ||
| "x-hasura-default-role": string("user"), | ||
| "x-hasura-user-id": string("585e21fc-3664-4d03-8539-69945342a4f4"), | ||
| "x-hasura-user-isAnonymous": string("false"), | ||
| }, | ||
| "iat": float64(1.708100135e+09), | ||
| "iss": string("some-issuer"), | ||
| "sub": string("585e21fc-3664-4d03-8539-69945342a4f4"), | ||
| }, | ||
| Signature: []uint8{}, | ||
| Valid: true, | ||
| }, | ||
| }, | ||
|
|
||
| { | ||
| name: "with valid key with claims namespace", | ||
| key: jwtSecretWithClaimsNamespace, | ||
| userID: userID, | ||
| expiresIn: time.Hour, | ||
| expectedToken: &jwt.Token{ | ||
| Raw: "ignored", | ||
| Method: &jwt.SigningMethodHMAC{Name: "HS256", Hash: crypto.SHA256}, | ||
| Header: map[string]interface{}{"alg": string("HS256"), "typ": string("JWT")}, | ||
| Claims: jwt.MapClaims{ | ||
| "exp": float64(1.708103735e+09), | ||
| "some/namespace": map[string]interface{}{ | ||
| "x-hasura-allowed-roles": []interface{}{ | ||
| string("admin"), | ||
| string("user"), | ||
| string("project_manager"), | ||
| string("anonymous"), | ||
| }, | ||
| "x-hasura-default-role": string("user"), | ||
| "x-hasura-user-id": string("585e21fc-3664-4d03-8539-69945342a4f4"), | ||
| "x-hasura-user-isAnonymous": string("false"), | ||
| }, | ||
| "iat": float64(1.708100135e+09), | ||
| "iss": string("hasura-auth"), | ||
| "sub": string("585e21fc-3664-4d03-8539-69945342a4f4"), | ||
| }, | ||
| Signature: []uint8{}, | ||
| Valid: true, | ||
| }, | ||
| }, | ||
| } | ||
|
|
||
| for _, tc := range cases { | ||
| tc := tc | ||
| t.Run(tc.name, func(t *testing.T) { | ||
| t.Parallel() | ||
| tc := tc | ||
|
|
||
| getterFn, err := controller.JWTGetterFn(tc.key, tc.expiresIn) | ||
| if err != nil { | ||
| t.Fatalf("GetJWTFunc() err = %v; want nil", err) | ||
| } | ||
|
|
||
| accessToken, err := getterFn(tc.userID) | ||
| if err != nil { | ||
| t.Fatalf("fn() err = %v; want nil", err) | ||
| } | ||
| t.Logf("token = %v", accessToken) | ||
|
|
||
| validatorFn, err := controller.JWTValidateFn(tc.key) | ||
| if err != nil { | ||
| t.Fatalf("JWTValidatorFn() err = %v; want nil", err) | ||
| } | ||
|
|
||
| decodedToken, err := validatorFn(accessToken) | ||
| if err != nil { | ||
| t.Fatalf("fn() err = %v; want nil", err) | ||
| } | ||
|
|
||
| cmpopts := []cmp.Option{ | ||
| cmpopts.IgnoreFields(jwt.Token{}, "Raw", "Signature"), //nolint:exhaustruct | ||
| cmpopts.IgnoreMapEntries(func(key string, value interface{}) bool { | ||
| return key == "iat" || key == "exp" | ||
| }), | ||
| } | ||
| if diff := cmp.Diff(decodedToken, tc.expectedToken, cmpopts...); diff != "" { | ||
| t.Errorf("decodedToken mismatch (-want +got):\n%s", diff) | ||
| } | ||
| }) | ||
| } | ||
| } |
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