/
service.go
165 lines (132 loc) · 3.73 KB
/
service.go
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// Package totpapi provides an HTTP API for TOTP management.
package totpapi
import (
"context"
"fmt"
"net/http"
"github.com/go-kit/kit/log"
auth "github.com/fmitra/authenticator"
"github.com/fmitra/authenticator/internal/httpapi"
tokenLib "github.com/fmitra/authenticator/internal/token"
)
type service struct {
logger log.Logger
otp auth.OTPService
repoMngr auth.RepositoryManager
token auth.TokenService
}
// Secret sets a new TOTP secret on a User's profile and delivers it back to the user
// in the format of a TOTP URI string that is compatible with TOTP generators such as
// Authy and Google Authenticator.
func (s *service) Secret(w http.ResponseWriter, r *http.Request) (interface{}, error) {
ctx := r.Context()
userID := httpapi.GetUserID(r)
user, err := s.repoMngr.User().ByIdentity(ctx, "ID", userID)
if err != nil {
return nil, err
}
if user.IsTOTPAllowed {
return nil, auth.ErrBadRequest("TOTP is already configured")
}
client, err := s.repoMngr.NewWithTransaction(ctx)
if err != nil {
return nil, err
}
entity, err := client.WithAtomic(func() (interface{}, error) {
user, err := client.User().GetForUpdate(ctx, userID)
if err != nil {
return nil, err
}
secret, err := s.otp.TOTPSecret(user)
if err != nil {
return nil, err
}
user.TFASecret = secret
if err = client.User().Update(ctx, user); err != nil {
return nil, fmt.Errorf("cannot set tfa secret: %w", err)
}
return user, nil
})
if err != nil {
return nil, err
}
*user = *entity.(*auth.User)
totpQRStr, err := s.otp.TOTPQRString(user)
if err != nil {
return nil, err
}
return &Response{TOTP: totpQRStr}, nil
}
// Verify validates a recently generated TOTP code. If a code is valid, TOTP is enabled
// for the user as a valid 2FA option.
func (s *service) Verify(w http.ResponseWriter, r *http.Request) (interface{}, error) {
ctx := r.Context()
userID := httpapi.GetUserID(r)
user, err := s.repoMngr.User().ByIdentity(ctx, "ID", userID)
if err != nil {
return nil, err
}
if user.IsTOTPAllowed {
return nil, auth.ErrBadRequest("TOTP is already configured")
}
isEnabled := true
return s.configureTOTP(ctx, r, user, isEnabled)
}
// Remove validates a recently generated TOTP code. If a code is valid, TOTP is disabled
// for the user.
func (s *service) Remove(w http.ResponseWriter, r *http.Request) (interface{}, error) {
ctx := r.Context()
userID := httpapi.GetUserID(r)
user, err := s.repoMngr.User().ByIdentity(ctx, "ID", userID)
if err != nil {
return nil, err
}
if !user.IsTOTPAllowed {
return nil, auth.ErrBadRequest("TOTP is not enabled")
}
isEnabled := false
return s.configureTOTP(ctx, r, user, isEnabled)
}
func (s *service) configureTOTP(ctx context.Context, r *http.Request, user *auth.User, isEnabled bool) (interface{}, error) {
req, err := decodeTOTPRequest(r)
if err != nil {
return nil, err
}
if err = s.otp.ValidateTOTP(ctx, user, req.Code); err != nil {
return nil, err
}
client, err := s.repoMngr.NewWithTransaction(ctx)
if err != nil {
return nil, err
}
entity, err := client.WithAtomic(func() (interface{}, error) {
user, err := client.User().GetForUpdate(ctx, user.ID)
if err != nil {
return nil, err
}
user.IsTOTPAllowed = isEnabled
if err = client.User().Update(ctx, user); err != nil {
return nil, fmt.Errorf("cannot update TOTP setting: %w", err)
}
return user, nil
})
if err != nil {
return nil, err
}
*user = *entity.(*auth.User)
token := httpapi.GetToken(r)
token, err = s.token.Create(
ctx,
user,
auth.JWTAuthorized,
tokenLib.WithRefreshableToken(token),
)
if err != nil {
return nil, err
}
signedToken, err := s.token.Sign(ctx, token)
if err != nil {
return nil, err
}
return &tokenLib.Response{Token: signedToken}, nil
}