| // Copyright Istio 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 fuzz |
| |
| import ( |
| "context" |
| "crypto/tls" |
| "crypto/x509" |
| "crypto/x509/pkix" |
| "net" |
| ) |
| |
| import ( |
| fuzz "github.com/AdaLogics/go-fuzz-headers" |
| "google.golang.org/grpc/credentials" |
| "google.golang.org/grpc/peer" |
| pb "istio.io/api/security/v1alpha1" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go-pixiu/pkg/security" |
| mockca "github.com/apache/dubbo-go-pixiu/security/pkg/pki/ca/mock" |
| "github.com/apache/dubbo-go-pixiu/security/pkg/pki/util" |
| "github.com/apache/dubbo-go-pixiu/security/pkg/server/ca" |
| "github.com/apache/dubbo-go-pixiu/security/pkg/server/ca/authenticate" |
| ) |
| |
| func FuzzGenCSR(data []byte) int { |
| f := fuzz.NewConsumer(data) |
| certOptions := util.CertOptions{} |
| err := f.GenerateStruct(&certOptions) |
| if err != nil { |
| return 0 |
| } |
| _, _, _ = util.GenCSR(certOptions) |
| return 1 |
| } |
| |
| func fuzzedCertChain(f *fuzz.ConsumeFuzzer) ([][]*x509.Certificate, error) { |
| certChain := [][]*x509.Certificate{} |
| withPkixExtension, err := f.GetBool() |
| if err != nil { |
| return certChain, err |
| } |
| if withPkixExtension { |
| ids := []util.Identity{} |
| err := f.GenerateStruct(&ids) |
| if err != nil { |
| return certChain, err |
| } |
| sanExt, err := util.BuildSANExtension(ids) |
| if err != nil { |
| return certChain, err |
| } |
| certChain = [][]*x509.Certificate{ |
| { |
| { |
| Extensions: []pkix.Extension{*sanExt}, |
| }, |
| }, |
| } |
| } |
| return certChain, nil |
| } |
| |
| func FuzzCreateCertE2EUsingClientCertAuthenticator(data []byte) int { |
| f := fuzz.NewConsumer(data) |
| certChainBytes, err := f.GetBytes() |
| if err != nil { |
| return 0 |
| } |
| // Check that certChainBytes can be parsed successfully |
| _, err = util.ParsePemEncodedCertificate(certChainBytes) |
| if err != nil { |
| return 0 |
| } |
| rootCertBytes, err := f.GetBytes() |
| if err != nil { |
| return 0 |
| } |
| // Check that rootCertBytes can be parsed successfully |
| _, err = util.ParsePemEncodedCertificate(rootCertBytes) |
| if err != nil { |
| return 0 |
| } |
| signedCert, err := f.GetBytes() |
| if err != nil { |
| return 0 |
| } |
| |
| auth := &authenticate.ClientCertAuthenticator{} |
| kcb := util.NewKeyCertBundleFromPem(nil, nil, certChainBytes, rootCertBytes) |
| |
| mockCa := &mockca.FakeCA{ |
| SignedCert: signedCert, |
| KeyCertBundle: kcb, |
| } |
| server, err := ca.New(mockCa, 1, []security.Authenticator{auth}) |
| if err != nil { |
| return 0 |
| } |
| csrString, err := f.GetString() |
| if err != nil { |
| return 0 |
| } |
| request := &pb.IstioCertificateRequest{Csr: csrString} |
| ctx := context.Background() |
| |
| certChain, err := fuzzedCertChain(f) |
| if err != nil { |
| return 0 |
| } |
| tlsInfo := credentials.TLSInfo{ |
| State: tls.ConnectionState{VerifiedChains: certChain}, |
| } |
| |
| mockIPAddr := &net.IPAddr{IP: net.IPv4(192, 168, 1, 1)} |
| p := &peer.Peer{Addr: mockIPAddr, AuthInfo: tlsInfo} |
| |
| ctx = peer.NewContext(ctx, p) |
| |
| _, _ = server.CreateCertificate(ctx, request) |
| return 1 |
| } |