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add fuzz test for auth package #3444

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May 28, 2024
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79 changes: 79 additions & 0 deletions internal/auth/fuzz_test.go
Original file line number Diff line number Diff line change
@@ -0,0 +1,79 @@
//
// Copyright 2024 Stacklok, Inc.
//
// 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 auth

import (
"crypto/rand"
"crypto/rsa"
"testing"

"github.com/lestrrat-go/jwx/v2/jwa"
"github.com/lestrrat-go/jwx/v2/jwk"
"go.uber.org/mock/gomock"

mockjwt "github.com/stacklok/minder/internal/auth/mock"
)

var (
privateKey *rsa.PrivateKey
publicKey *rsa.PublicKey
)

func init() {
var err error
privateKey, err = rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
return
}
publicKey = &privateKey.PublicKey
}

func FuzzParseAndValidate(f *testing.F) {
f.Fuzz(func(t *testing.T, pubKeyId, privKeyId, token string) {

privateJwk, _ := jwk.FromRaw(privateKey)
err := privateJwk.Set(jwk.KeyIDKey, privKeyId)
if err != nil {
return
}

publicJwk, _ := jwk.FromRaw(publicKey)
err = publicJwk.Set(jwk.KeyIDKey, pubKeyId)
if err != nil {
return
}
err = publicJwk.Set(jwk.AlgorithmKey, jwa.RS256)
if err != nil {
return
}

jwks := jwk.NewSet()
err = jwks.AddKey(publicJwk)
if err != nil {
return
}

ctrl := gomock.NewController(t)
defer ctrl.Finish()

mockKeyFetcher := mockjwt.NewMockKeySetFetcher(ctrl)
mockKeyFetcher.EXPECT().GetKeySet().Return(jwks, nil)

jwtValidator := JwkSetJwtValidator{jwksFetcher: mockKeyFetcher}
//nolint:gosec // Ignore return values
jwtValidator.ParseAndValidate(token)
})
}