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google_oauth_callback.go
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google_oauth_callback.go
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package users
import (
"context"
"encoding/json"
"fmt"
"io"
"net/http"
"github.com/labstack/echo/v4"
"golang.org/x/oauth2"
"github.com/hatchet-dev/hatchet/api/v1/server/authn"
"github.com/hatchet-dev/hatchet/api/v1/server/middleware/redirect"
"github.com/hatchet-dev/hatchet/api/v1/server/oas/gen"
"github.com/hatchet-dev/hatchet/pkg/config/server"
"github.com/hatchet-dev/hatchet/pkg/repository"
"github.com/hatchet-dev/hatchet/pkg/repository/prisma/db"
)
// Note: we want all errors to redirect, otherwise the user will be greeted with raw JSON in the middle of the login flow.
func (u *UserService) UserUpdateGoogleOauthCallback(ctx echo.Context, _ gen.UserUpdateGoogleOauthCallbackRequestObject) (gen.UserUpdateGoogleOauthCallbackResponseObject, error) {
isValid, _, err := authn.NewSessionHelpers(u.config).ValidateOAuthState(ctx, "google")
if err != nil || !isValid {
return nil, redirect.GetRedirectWithError(ctx, u.config.Logger, err, "Could not log in. Please try again and make sure cookies are enabled.")
}
token, err := u.config.Auth.GoogleOAuthConfig.Exchange(context.Background(), ctx.Request().URL.Query().Get("code"))
if err != nil {
return nil, redirect.GetRedirectWithError(ctx, u.config.Logger, err, "Forbidden")
}
if !token.Valid() {
return nil, redirect.GetRedirectWithError(ctx, u.config.Logger, fmt.Errorf("invalid token"), "Forbidden")
}
user, err := u.upsertGoogleUserFromToken(u.config, token)
if err != nil {
return nil, redirect.GetRedirectWithError(ctx, u.config.Logger, err, "Internal error.")
}
err = authn.NewSessionHelpers(u.config).SaveAuthenticated(ctx, user)
if err != nil {
return nil, redirect.GetRedirectWithError(ctx, u.config.Logger, err, "Internal error.")
}
return gen.UserUpdateGoogleOauthCallback302Response{
Headers: gen.UserUpdateGoogleOauthCallback302ResponseHeaders{
Location: u.config.Runtime.ServerURL,
},
}, nil
}
func (u *UserService) upsertGoogleUserFromToken(config *server.ServerConfig, tok *oauth2.Token) (*db.UserModel, error) {
gInfo, err := getGoogleUserInfoFromToken(tok)
if err != nil {
return nil, err
}
if err := u.checkUserRestrictions(config, gInfo.HD); err != nil {
return nil, err
}
expiresAt := tok.Expiry
// use the encryption service to encrypt the access and refresh token
accessTokenEncrypted, err := config.Encryption.Encrypt([]byte(tok.AccessToken), "google_access_token")
if err != nil {
return nil, fmt.Errorf("failed to encrypt access token: %s", err.Error())
}
refreshTokenEncrypted, err := config.Encryption.Encrypt([]byte(tok.RefreshToken), "google_refresh_token")
if err != nil {
return nil, fmt.Errorf("failed to encrypt refresh token: %s", err.Error())
}
oauthOpts := &repository.OAuthOpts{
Provider: "google",
ProviderUserId: gInfo.Sub,
AccessToken: accessTokenEncrypted,
RefreshToken: &refreshTokenEncrypted,
ExpiresAt: &expiresAt,
}
user, err := u.config.APIRepository.User().GetUserByEmail(gInfo.Email)
switch err {
case nil:
user, err = u.config.APIRepository.User().UpdateUser(user.ID, &repository.UpdateUserOpts{
EmailVerified: repository.BoolPtr(gInfo.EmailVerified),
Name: repository.StringPtr(gInfo.Name),
OAuth: oauthOpts,
})
if err != nil {
return nil, fmt.Errorf("failed to update user: %s", err.Error())
}
case db.ErrNotFound:
user, err = u.config.APIRepository.User().CreateUser(&repository.CreateUserOpts{
Email: gInfo.Email,
EmailVerified: repository.BoolPtr(gInfo.EmailVerified),
Name: repository.StringPtr(gInfo.Name),
OAuth: oauthOpts,
})
if err != nil {
return nil, fmt.Errorf("failed to create user: %s", err.Error())
}
default:
return nil, fmt.Errorf("failed to get user: %s", err.Error())
}
return user, nil
}
type googleUserInfo struct {
Email string `json:"email"`
EmailVerified bool `json:"email_verified"`
HD string `json:"hd"`
Sub string `json:"sub"`
Name string `json:"name"`
}
func getGoogleUserInfoFromToken(tok *oauth2.Token) (*googleUserInfo, error) {
// use userinfo endpoint for Google OIDC to get claims
url := "https://openidconnect.googleapis.com/v1/userinfo"
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return nil, fmt.Errorf("failed creating request: %s", err.Error())
}
req.Header.Add("Authorization", "Bearer "+tok.AccessToken)
client := &http.Client{}
response, err := client.Do(req)
if err != nil {
return nil, fmt.Errorf("failed getting user info: %s", err.Error())
}
defer response.Body.Close()
contents, err := io.ReadAll(response.Body)
if err != nil {
return nil, fmt.Errorf("failed reading response body: %s", err.Error())
}
// parse contents into Google userinfo claims
gInfo := &googleUserInfo{}
err = json.Unmarshal(contents, &gInfo)
if err != nil {
return nil, fmt.Errorf("failed parsing response body: %s", err.Error())
}
return gInfo, nil
}