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rule: Adds validator for rules (#77)
This patch adds an input validator for rules which should prevent accidental typos or similar issues when creating a rule. Additionally, no invalid/unconfigured handlers (authorizers, credential issuers, authenticators) can be used.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| /* | ||
| * Copyright © 2017-2018 Aeneas Rekkas <[email protected]> | ||
| * | ||
| * 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 <[email protected]> | ||
| * @copyright 2017-2018 Aeneas Rekkas <[email protected]> | ||
| * @license Apache-2.0 | ||
| */ | ||
|
|
||
| package rule | ||
|
|
||
| import ( | ||
| "fmt" | ||
|
|
||
| "github.com/asaskevich/govalidator" | ||
| "github.com/ory/go-convenience/stringslice" | ||
| "github.com/ory/oathkeeper/helper" | ||
| "github.com/pkg/errors" | ||
| ) | ||
|
|
||
| func ValidateRule( | ||
| enabledAuthenticators []string, availableAuthenticators []string, | ||
| enabledAuthorizers []string, availableAuthorizers []string, | ||
| enabledCredentialsIssuers []string, availableCredentialsIssuers []string, | ||
| ) func(r *Rule) error { | ||
| methods := []string{"GET", "POST", "PUT", "HEAD", "DELETE", "PATCH", "OPTIONS", "TRACE", "CONNECT"} | ||
|
|
||
| return func(r *Rule) error { | ||
| if !govalidator.IsURL(r.Match.URL) { | ||
| return errors.WithStack(helper.ErrBadRequest.WithReason(fmt.Sprintf("Value \"%s\" from match.url field is not a valid url.", r.Match.URL))) | ||
| } | ||
|
|
||
| for _, m := range r.Match.Methods { | ||
| if !stringslice.Has(methods, m) { | ||
| return errors.WithStack(helper.ErrBadRequest.WithReason(fmt.Sprintf("Value \"%s\" from match.methods is not a valid HTTP method, valid methods are: %v", m, methods))) | ||
| } | ||
| } | ||
|
|
||
| if !govalidator.IsURL(r.Upstream.URL) { | ||
| return errors.WithStack(helper.ErrBadRequest.WithReason(fmt.Sprintf("Value \"%s\" from upstream.url field is not a valid url.", r.Upstream.URL))) | ||
| } | ||
|
|
||
| if len(r.Authenticators) == 0 { | ||
| return errors.WithStack(helper.ErrBadRequest.WithReason("At least one authenticator must be set.")) | ||
| } | ||
|
|
||
| for _, a := range r.Authenticators { | ||
| if !stringslice.Has(enabledAuthenticators, a.Handler) { | ||
| if stringslice.Has(availableAuthenticators, a.Handler) { | ||
| return errors.WithStack(helper.ErrBadRequest.WithReason(fmt.Sprintf("Authenticator \"%s\" is valid but has not enabled by the server's configuration, enabled authorizers are: %v", a.Handler, enabledAuthenticators))) | ||
| } | ||
|
|
||
| return errors.WithStack(helper.ErrBadRequest.WithReason(fmt.Sprintf("Authenticator \"%s\" is unknown, enabled authenticators are: %v", a.Handler, enabledAuthenticators))) | ||
| } | ||
| } | ||
|
|
||
| if r.Authorizer.Handler == "" { | ||
| return errors.WithStack(helper.ErrBadRequest.WithReason("Value authorizer.handler can not be empty.")) | ||
| } | ||
|
|
||
| if !stringslice.Has(enabledAuthorizers, r.Authorizer.Handler) { | ||
| if stringslice.Has(availableAuthorizers, r.Authorizer.Handler) { | ||
| return errors.WithStack(helper.ErrBadRequest.WithReason(fmt.Sprintf("Authorizer \"%s\" is valid but has not enabled by the server's configuration, enabled authorizers are: %v", r.Authorizer.Handler, enabledAuthorizers))) | ||
| } | ||
|
|
||
| return errors.WithStack(helper.ErrBadRequest.WithReason(fmt.Sprintf("Authorizer \"%s\" is unknown, enabled authorizers are: %v", r.Authorizer.Handler, enabledAuthorizers))) | ||
| } | ||
|
|
||
| if r.CredentialsIssuer.Handler == "" { | ||
| return errors.WithStack(helper.ErrBadRequest.WithReason("Value credentials_issuer.handler can not be empty.")) | ||
| } | ||
|
|
||
| if !stringslice.Has(enabledCredentialsIssuers, r.CredentialsIssuer.Handler) { | ||
| if stringslice.Has(availableCredentialsIssuers, r.CredentialsIssuer.Handler) { | ||
| return errors.WithStack(helper.ErrBadRequest.WithReason(fmt.Sprintf("Credentials issuer \"%s\" is valid but has not enabled by the server's configuration, enabled credentials issuers are: %v", r.CredentialsIssuer.Handler, enabledCredentialsIssuers))) | ||
| } | ||
|
|
||
| return errors.WithStack(helper.ErrBadRequest.WithReason(fmt.Sprintf("Credentials issuer \"%s\" is unknown, enabled credentials issuers are: %v", r.CredentialsIssuer.Handler, enabledCredentialsIssuers))) | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
| } |
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