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introspector.go
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/
introspector.go
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/*
* Copyright © 2015-2018 Aeneas Rekkas <aeneas+oss@aeneas.io>
*
* 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.
*
* @author Aeneas Rekkas <aeneas+oss@aeneas.io>
* @copyright 2015-2018 Aeneas Rekkas <aeneas+oss@aeneas.io>
* @license Apache-2.0
*
*/
package oauth2
import (
"context"
"github.com/pkg/errors"
"ramblify.com/tokenservice/core/utils"
"github.com/kalrashubham49/fosite"
)
type CoreValidator struct {
CoreStrategy
CoreStorage
ScopeStrategy fosite.ScopeStrategy
DisableRefreshTokenValidation bool
}
func (c *CoreValidator) IntrospectToken(ctx context.Context, token string, tokenType fosite.TokenType, accessRequest fosite.AccessRequester, scopes []string) (fosite.TokenType, error) {
if c.DisableRefreshTokenValidation {
if err := c.introspectAccessToken(ctx, token, accessRequest, scopes); err != nil {
return "", err
}
return fosite.AccessToken, nil
}
var err error
switch tokenType {
case fosite.RefreshToken:
if err = c.introspectRefreshToken(ctx, token, accessRequest, scopes); err == nil {
return fosite.RefreshToken, nil
} else if err = c.introspectAccessToken(ctx, token, accessRequest, scopes); err == nil {
return fosite.AccessToken, nil
}
return "", err
}
if err = c.introspectAccessToken(ctx, token, accessRequest, scopes); err == nil {
return fosite.AccessToken, nil
} else if err := c.introspectRefreshToken(ctx, token, accessRequest, scopes); err == nil {
return fosite.RefreshToken, nil
}
return "", err
}
func matchScopes(ss fosite.ScopeStrategy, granted, scopes []string) error {
for _, scope := range scopes {
if scope == "" {
continue
}
if !ss(granted, scope) {
return errors.WithStack(fosite.ErrInvalidScope.WithHintf("The request scope \"%s\" has not been granted or is not allowed to be requested.", scope))
}
}
return nil
}
func (c *CoreValidator) introspectAccessToken(ctx context.Context, token string, accessRequest fosite.AccessRequester, scopes []string) error {
sig := c.CoreStrategy.AccessTokenSignature(token)
// Validate
err := utils.IsSignatureRevoked(sig, 1)
if err != nil {
return errors.WithStack(errors.New("Token is Already Revoked"))
}
or, err := c.CoreStorage.GetAccessTokenSession(ctx, sig)
if err != nil {
return errors.WithStack(fosite.ErrRequestUnauthorized.WithDebug(err.Error()))
} else if err := c.CoreStrategy.ValidateAccessToken(ctx, or, token); err != nil {
return err
}
if err := matchScopes(c.ScopeStrategy, or.GetGrantedScopes(), scopes); err != nil {
return err
}
accessRequest.Merge(or)
return nil
}
func (c *CoreValidator) introspectRefreshToken(ctx context.Context, token string, accessRequest fosite.AccessRequester, scopes []string) error {
sig := c.CoreStrategy.RefreshTokenSignature(token)
err := utils.IsSignatureRevoked(sig, 2)
if err != nil {
return errors.WithStack(errors.New("Token is Already Revoked"))
}
or, err := c.CoreStorage.GetRefreshTokenSession(ctx, sig)
if err != nil {
return errors.WithStack(fosite.ErrRequestUnauthorized.WithDebug(err.Error()))
} else if err := c.CoreStrategy.ValidateRefreshToken(ctx, or, token); err != nil {
return err
}
if err := matchScopes(c.ScopeStrategy, or.GetGrantedScopes(), scopes); err != nil {
return err
}
accessRequest.Merge(or)
return nil
}