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// Copyright 2021 The Sigstore Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package oauthflow
import (
"errors"
"fmt"
"github.com/PaesslerAG/jsonpath"
"github.com/coreos/go-oidc/v3/oidc"
)
type stringAsBool bool
func (sb *stringAsBool) UnmarshalJSON(b []byte) error {
switch string(b) {
case "true", `"true"`, "True", `"True"`:
*sb = true
case "false", `"false"`, "False", `"False"`:
*sb = false
default:
return errors.New("invalid value for boolean")
}
return nil
}
func EmailFromIDToken(token *oidc.IDToken) (string, bool, error) {
// Extract custom claims
var claims struct {
Email string `json:"email"`
Verified stringAsBool `json:"email_verified"`
}
if err := token.Claims(&claims); err != nil {
return "", false, err
}
if claims.Email == "" {
return "", false, errors.New("token missing email claim")
}
return claims.Email, bool(claims.Verified), nil
}
func IssuerFromIDToken(token *oidc.IDToken, claimJSONPath string) (string, error) {
if claimJSONPath == "" {
return token.Issuer, nil
}
v := interface{}(nil)
if err := token.Claims(&v); err != nil {
return "", err
}
result, err := jsonpath.Get(claimJSONPath, v)
if err != nil {
return "", err
}
return fmt.Sprintf("%v", result), nil
}
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