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// Copyright 2024 OpenPubkey
//
// 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.
//
// SPDX-License-Identifier: Apache-2.0
package mocks
import (
"context"
"crypto"
"fmt"
"testing"
"github.com/lestrrat-go/jwx/v2/jwa"
"github.com/lestrrat-go/jwx/v2/jws"
"github.com/openpubkey/openpubkey/discover"
"github.com/openpubkey/openpubkey/util"
"github.com/stretchr/testify/require"
"golang.org/x/exp/maps"
)
func TestSimpleBackendOverride(t *testing.T) {
issuer := "https://accounts.example.com/"
mockBackend, err := NewMockProviderBackend(issuer, "RS256", 3)
require.NoError(t, err)
expSigningKey, expKeyID, expRecord := mockBackend.RandomSigningKey()
idTokenTemplate := IDTokenTemplate{
CommitFunc: AddAudCommit,
Issuer: issuer,
Nonce: "empty",
NoNonce: false,
Aud: "also me",
KeyID: expKeyID,
NoKeyID: false,
Alg: expRecord.Alg,
NoAlg: false,
ExtraClaims: map[string]any{"extraClaim": "extraClaimValue"},
ExtraProtectedClaims: map[string]any{"extraHeader": "extraheaderValue"},
SigningKey: expSigningKey,
}
mockBackend.SetIDTokenTemplate(&idTokenTemplate)
cicHash := util.Base64EncodeForJWT([]byte("0123456789ABCDEF0123456789ABCDEF"))
tokens, err := mockBackend.RequestTokensOverrideFunc(string(cicHash))
idt := tokens.IDToken
require.NoError(t, err)
require.NotNil(t, idt)
record, err := mockBackend.GetPublicKeyFinder().ByToken(context.Background(), issuer, idt)
require.NoError(t, err)
payload, err := jws.Verify(idt, jws.WithKey(jwa.KeyAlgorithmFrom(record.Alg), record.PublicKey))
require.NoError(t, err)
require.Contains(t, string(payload), string(cicHash))
}
func TestKeySetCreatorsConvenience(t *testing.T) {
issuer := "https://accounts.example.com/"
skSet, recordSet, err := CreateRS256KeySet(issuer, 2)
require.NoError(t, err)
CheckKeySets(t, "Happy case: CreateRS256KeySet", issuer, "RS256", skSet, recordSet)
skSet, recordSet, err = CreateES256KeySet(issuer, 2)
require.NoError(t, err)
CheckKeySets(t, "Happy case: CreateES256KeySet", issuer, "ES256", skSet, recordSet)
}
func TestKeySetCreators(t *testing.T) {
issuerA := "https://accounts.example.com/"
issuerB := "https://diff-accounts.example.com/"
for numKeys := 1; numKeys < 3; numKeys++ {
testCases := []struct {
name string
issuer string
alg string
expError string
}{
{name: fmt.Sprintf("Happy case (RS256): %d key(s)", numKeys), issuer: issuerA, alg: "RS256",
expError: "",
},
{name: fmt.Sprintf("Happy case (ES256): %d key(s)", numKeys), issuer: issuerB, alg: "ES256",
expError: "",
},
{name: fmt.Sprintf("Unsupported alg (ZZ404): %d key(s)", numKeys), issuer: issuerB, alg: "ZZ404",
expError: "unsupported alg",
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
// skSet - set of signingKeys, recordSet - set of publicKeyRecords
skSet, recordSet, err := CreateKeySet(tc.issuer, tc.alg, numKeys)
if tc.expError != "" {
require.ErrorContains(t, err, tc.expError, tc.name)
} else {
require.NoError(t, err, tc.name)
}
CheckKeySets(t, tc.name, tc.issuer, tc.alg, skSet, recordSet)
})
}
}
}
func CheckKeySets(t *testing.T, name string, issuer string, alg string, skSet map[string]crypto.Signer, recordSet map[string]discover.PublicKeyRecord) {
require.ElementsMatch(t, maps.Keys(skSet), maps.Keys(recordSet))
for kid, signer := range skSet {
record := recordSet[kid]
require.NotNil(t, signer, name)
require.NotNil(t, record, name)
require.Equal(t, signer.Public(), record.PublicKey, name)
require.Equal(t, issuer, record.Issuer, name)
require.Equal(t, alg, record.Alg, name)
}
}
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