feat: add oidc for google login

server/go.mod

@@ -4,6 +4,7 @@ go 1.16
 
 require (
 	github.com/99designs/gqlgen v0.13.0
+	github.com/coreos/go-oidc/v3 v3.1.0 // indirect
 	github.com/gin-contrib/location v0.0.2 // indirect
 	github.com/gin-gonic/gin v1.7.2
 	github.com/go-playground/validator/v10 v10.8.0 // indirect

server/go.sum

@@ -109,6 +109,8 @@ github.com/cockroachdb/apd v1.1.0 h1:3LFP3629v+1aKXU5Q37mxmRxX/pIu1nijXydLShEq5I
 github.com/cockroachdb/apd v1.1.0/go.mod h1:8Sl8LxpKi29FqWXR16WEFZRNSz3SoPzUzeMeY4+DwBQ=
 github.com/cockroachdb/datadriven v0.0.0-20190809214429-80d97fb3cbaa/go.mod h1:zn76sxSg3SzpJ0PPJaLDCu+Bu0Lg3sKTORVIj19EIF8=
 github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd/go.mod h1:sE/e/2PUdi/liOCUjSTXgM1o87ZssimdTWN964YiIeI=
+github.com/coreos/go-oidc/v3 v3.1.0 h1:6avEvcdvTa1qYsOZ6I5PRkSYHzpTNWgKYmaJfaYbrRw=
+github.com/coreos/go-oidc/v3 v3.1.0/go.mod h1:rEJ/idjfUyfkBit1eI1fvyr+64/g9dcKpAm8MJMesvo=
 github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
 github.com/coreos/go-systemd v0.0.0-20180511133405-39ca1b05acc7/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
 github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
@@ -737,6 +739,7 @@ golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20200301022130-244492dfa37a/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20200501053045-e0ff5e5a1de5/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
+golang.org/x/net v0.0.0-20200505041828-1ed23360d12c/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20200506145744-7e3656a0809f/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20200513185701-a91f0712d120/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20200520004742-59133d7f0dd7/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
@@ -1100,6 +1103,8 @@ gopkg.in/readline.v1 v1.0.0-20160726135117-62c6fe619375/go.mod h1:lNEQeAhU009zbR
 gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
 gopkg.in/sourcemap.v1 v1.0.5 h1:inv58fC9f9J3TK2Y2R1NPntXEn3/wjWHkonhIUODNTI=
 gopkg.in/sourcemap.v1 v1.0.5/go.mod h1:2RlvNNSMglmRrcvhfuzp4hQHwOtjxlbjX7UPY/GXb78=
+gopkg.in/square/go-jose.v2 v2.5.1 h1:7odma5RETjNHWJnR32wx8t+Io4djHE1PqxCFx3iiZ2w=
+gopkg.in/square/go-jose.v2 v2.5.1/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/warnings.v0 v0.1.2/go.mod h1:jksf8JmL6Qr/oQM2OXTHunEvvTAsrWBLb6OOjuVWRNI=

server/handlers/oauthCallback.go

@@ -1,6 +1,7 @@
 package handlers
 
 import (
+	"context"
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
@@ -15,36 +16,50 @@ import (
 	"github.com/authorizerdev/authorizer/server/oauth"
 	"github.com/authorizerdev/authorizer/server/session"
 	"github.com/authorizerdev/authorizer/server/utils"
+	"github.com/coreos/go-oidc/v3/oidc"
 	"github.com/gin-gonic/gin"
 	"golang.org/x/oauth2"
 )
 
 func processGoogleUserInfo(code string) (db.User, error) {
 	user := db.User{}
-	token, err := oauth.OAuthProvider.GoogleConfig.Exchange(oauth2.NoContext, code)
+	ctx := context.Background()
+	oauth2Token, err := oauth.OAuthProviders.GoogleConfig.Exchange(ctx, code)
 	if err != nil {
 		return user, fmt.Errorf("invalid google exchange code: %s", err.Error())
 	}
-	client := oauth.OAuthProvider.GoogleConfig.Client(oauth2.NoContext, token)
+
-	response, err := client.Get(constants.GoogleUserInfoURL)
+	verifier := oauth.OIDCProviders.GoogleOIDC.Verifier(&oidc.Config{ClientID: oauth.OAuthProviders.GoogleConfig.ClientID})
-	if err != nil {
+
-		return user, err
+	// Extract the ID Token from OAuth2 token.
+	rawIDToken, ok := oauth2Token.Extra("id_token").(string)
+	if !ok {
+		return user, fmt.Errorf("unable to extract id_token")
 	}
 
-	defer response.Body.Close()
+	// Parse and verify ID Token payload.
-	body, err := ioutil.ReadAll(response.Body)
+	idToken, err := verifier.Verify(ctx, rawIDToken)
 	if err != nil {
-		return user, fmt.Errorf("failed to read google response body: %s", err.Error())
+		return user, fmt.Errorf("unable to verify id_token:", err.Error())
 	}
 
-	userRawData := make(map[string]string)
+	// Extract custom claims
-	json.Unmarshal(body, &userRawData)
+	var claims struct {
+		Email      string `json:"email"`
+		Picture    string `json:"picture"`
+		GivenName  string `json:"given_name"`
+		FamilyName string `json:"family_name"`
+		Verified   bool   `json:"email_verified"`
+	}
+	if err := idToken.Claims(&claims); err != nil {
+		return user, fmt.Errorf("unable to extract claims")
+	}
 
 	user = db.User{
-		FirstName:       userRawData["given_name"],
+		FirstName:       claims.GivenName,
-		LastName:        userRawData["family_name"],
+		LastName:        claims.FamilyName,
-		Image:           userRawData["picture"],
+		Image:           claims.Picture,
-		Email:           userRawData["email"],
+		Email:           claims.Email,
 		EmailVerifiedAt: time.Now().Unix(),
 	}
 
@@ -53,7 +68,7 @@ func processGoogleUserInfo(code string) (db.User, error) {
 
 func processGithubUserInfo(code string) (db.User, error) {
 	user := db.User{}
-	token, err := oauth.OAuthProvider.GithubConfig.Exchange(oauth2.NoContext, code)
+	token, err := oauth.OAuthProviders.GithubConfig.Exchange(oauth2.NoContext, code)
 	if err != nil {
 		return user, fmt.Errorf("invalid github exchange code: %s", err.Error())
 	}
@@ -102,7 +117,7 @@ func processGithubUserInfo(code string) (db.User, error) {
 
 func processFacebookUserInfo(code string) (db.User, error) {
 	user := db.User{}
-	token, err := oauth.OAuthProvider.FacebookConfig.Exchange(oauth2.NoContext, code)
+	token, err := oauth.OAuthProviders.FacebookConfig.Exchange(oauth2.NoContext, code)
 	if err != nil {
 		return user, fmt.Errorf("invalid facebook exchange code: %s", err.Error())
 	}

server/handlers/oauthLogin.go

@@ -48,28 +48,46 @@ func OAuthLoginHandler() gin.HandlerFunc {
 		oauthStateString := uuid.String() + "___" + redirectURL + "___" + roles
 
 		provider := c.Param("oauth_provider")
-
+		isProviderConfigured := true
 		switch provider {
 		case enum.Google.String():
+			if oauth.OAuthProviders.GoogleConfig == nil {
+				isProviderConfigured = false
+				break
+			}
 			session.SetSocailLoginState(oauthStateString, enum.Google.String())
 			// during the init of OAuthProvider authorizer url might be empty
-			oauth.OAuthProvider.GoogleConfig.RedirectURL = constants.AUTHORIZER_URL + "/oauth_callback/google"
+			oauth.OAuthProviders.GoogleConfig.RedirectURL = constants.AUTHORIZER_URL + "/oauth_callback/google"
-			url := oauth.OAuthProvider.GoogleConfig.AuthCodeURL(oauthStateString)
+			url := oauth.OAuthProviders.GoogleConfig.AuthCodeURL(oauthStateString)
 			c.Redirect(http.StatusTemporaryRedirect, url)
 		case enum.Github.String():
+			if oauth.OAuthProviders.GithubConfig == nil {
+				isProviderConfigured = false
+				break
+			}
 			session.SetSocailLoginState(oauthStateString, enum.Github.String())
-			oauth.OAuthProvider.GithubConfig.RedirectURL = constants.AUTHORIZER_URL + "/oauth_callback/github"
+			oauth.OAuthProviders.GithubConfig.RedirectURL = constants.AUTHORIZER_URL + "/oauth_callback/github"
-			url := oauth.OAuthProvider.GithubConfig.AuthCodeURL(oauthStateString)
+			url := oauth.OAuthProviders.GithubConfig.AuthCodeURL(oauthStateString)
 			c.Redirect(http.StatusTemporaryRedirect, url)
 		case enum.Facebook.String():
+			if oauth.OAuthProviders.FacebookConfig == nil {
+				isProviderConfigured = false
+				break
+			}
 			session.SetSocailLoginState(oauthStateString, enum.Facebook.String())
-			oauth.OAuthProvider.FacebookConfig.RedirectURL = constants.AUTHORIZER_URL + "/oauth_callback/facebook"
+			oauth.OAuthProviders.FacebookConfig.RedirectURL = constants.AUTHORIZER_URL + "/oauth_callback/facebook"
-			url := oauth.OAuthProvider.FacebookConfig.AuthCodeURL(oauthStateString)
+			url := oauth.OAuthProviders.FacebookConfig.AuthCodeURL(oauthStateString)
 			c.Redirect(http.StatusTemporaryRedirect, url)
 		default:
 			c.JSON(422, gin.H{
 				"message": "Invalid oauth provider",
 			})
 		}
+
+		if !isProviderConfigured {
+			c.JSON(422, gin.H{
+				"message": provider + " not configured",
+			})
+		}
 	}
 }

server/oauth/oauth.go

@@ -1,33 +1,49 @@
 package oauth
 
 import (
+	"context"
+	"log"
+
 	"github.com/authorizerdev/authorizer/server/constants"
+	"github.com/coreos/go-oidc/v3/oidc"
 	"golang.org/x/oauth2"
 	facebookOAuth2 "golang.org/x/oauth2/facebook"
 	githubOAuth2 "golang.org/x/oauth2/github"
-	googleOAuth2 "golang.org/x/oauth2/google"
 )
 
-type OAuthProviders struct {
+type OAuthProvider struct {
 	GoogleConfig   *oauth2.Config
 	GithubConfig   *oauth2.Config
 	FacebookConfig *oauth2.Config
 }
 
-var OAuthProvider OAuthProviders
+type OIDCProvider struct {
+	GoogleOIDC *oidc.Provider
+}
+
+var (
+	OAuthProviders OAuthProvider
+	OIDCProviders  OIDCProvider
+)
 
 func InitOAuth() {
+	ctx := context.Background()
 	if constants.GOOGLE_CLIENT_ID != "" && constants.GOOGLE_CLIENT_SECRET != "" {
-		OAuthProvider.GoogleConfig = &oauth2.Config{
+		p, err := oidc.NewProvider(ctx, "https://accounts.google.com")
+		if err != nil {
+			log.Fatalln("error creating oidc provider for google:", err)
+		}
+		OIDCProviders.GoogleOIDC = p
+		OAuthProviders.GoogleConfig = &oauth2.Config{
 			ClientID:     constants.GOOGLE_CLIENT_ID,
 			ClientSecret: constants.GOOGLE_CLIENT_SECRET,
 			RedirectURL:  constants.AUTHORIZER_URL + "/oauth_callback/google",
-			Endpoint:     googleOAuth2.Endpoint,
+			Endpoint:     OIDCProviders.GoogleOIDC.Endpoint(),
-			Scopes:       []string{"https://www.googleapis.com/auth/userinfo.email", "https://www.googleapis.com/auth/userinfo.profile"},
+			Scopes:       []string{oidc.ScopeOpenID, "profile", "email"},
 		}
 	}
 	if constants.GITHUB_CLIENT_ID != "" && constants.GITHUB_CLIENT_SECRET != "" {
-		OAuthProvider.GithubConfig = &oauth2.Config{
+		OAuthProviders.GithubConfig = &oauth2.Config{
 			ClientID:     constants.GITHUB_CLIENT_ID,
 			ClientSecret: constants.GITHUB_CLIENT_SECRET,
 			RedirectURL:  constants.AUTHORIZER_URL + "/oauth_callback/github",
@@ -35,7 +51,7 @@ func InitOAuth() {
 		}
 	}
 	if constants.FACEBOOK_CLIENT_ID != "" && constants.FACEBOOK_CLIENT_SECRET != "" {
-		OAuthProvider.FacebookConfig = &oauth2.Config{
+		OAuthProviders.FacebookConfig = &oauth2.Config{
 			ClientID:     constants.FACEBOOK_CLIENT_ID,
 			ClientSecret: constants.FACEBOOK_CLIENT_SECRET,
 			RedirectURL:  constants.AUTHORIZER_URL + "/oauth_callback/facebook",

server/resolvers/token.go

@@ -92,6 +92,8 @@ func Token(ctx context.Context, roles []string) (*model.AuthResponse, error) {
 			Roles:           strings.Split(user.Roles, ","),
 			CreatedAt:       &user.CreatedAt,
 			UpdatedAt:       &user.UpdatedAt,
+			SignupMethod:    user.SignupMethod,
+			EmailVerifiedAt: &user.EmailVerifiedAt,
 		},
 	}
 	return res, nil