mirror of https://github.com/grpc/grpc-go.git
626 lines
24 KiB
Go
626 lines
24 KiB
Go
/*
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*
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* Copyright 2019 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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package advancedtls
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import (
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"context"
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"crypto/tls"
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"crypto/x509"
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"encoding/pem"
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"errors"
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"fmt"
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"io/ioutil"
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"net"
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"reflect"
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"syscall"
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"testing"
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"google.golang.org/grpc/credentials"
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"google.golang.org/grpc/security/advancedtls/testdata"
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)
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func TestClientServerHandshake(t *testing.T) {
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// ------------------Load Client Trust Cert and Peer Cert-------------------
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clientTrustPool, err := readTrustCert(testdata.Path("client_trust_cert_1.pem"))
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if err != nil {
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t.Fatalf("Client is unable to load trust certs. Error: %v", err)
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}
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getRootCAsForClient := func(params *GetRootCAsParams) (*GetRootCAsResults, error) {
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return &GetRootCAsResults{TrustCerts: clientTrustPool}, nil
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}
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clientVerifyFuncGood := func(params *VerificationFuncParams) (*VerificationResults, error) {
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if params.ServerName == "" {
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return nil, errors.New("client side server name should have a value")
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}
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// "foo.bar.com" is the common name on server certificate server_cert_1.pem.
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if len(params.VerifiedChains) > 0 && (params.Leaf == nil || params.Leaf.Subject.CommonName != "foo.bar.com") {
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return nil, errors.New("client side params parsing error")
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}
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return &VerificationResults{}, nil
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}
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verifyFuncBad := func(params *VerificationFuncParams) (*VerificationResults, error) {
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return nil, fmt.Errorf("custom verification function failed")
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}
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clientPeerCert, err := tls.LoadX509KeyPair(testdata.Path("client_cert_1.pem"),
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testdata.Path("client_key_1.pem"))
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if err != nil {
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t.Fatalf("Client is unable to parse peer certificates. Error: %v", err)
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}
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// ------------------Load Server Trust Cert and Peer Cert-------------------
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serverTrustPool, err := readTrustCert(testdata.Path("server_trust_cert_1.pem"))
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if err != nil {
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t.Fatalf("Server is unable to load trust certs. Error: %v", err)
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}
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getRootCAsForServer := func(params *GetRootCAsParams) (*GetRootCAsResults, error) {
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return &GetRootCAsResults{TrustCerts: serverTrustPool}, nil
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}
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serverVerifyFunc := func(params *VerificationFuncParams) (*VerificationResults, error) {
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if params.ServerName != "" {
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return nil, errors.New("server side server name should not have a value")
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}
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// "foo.bar.hoo.com" is the common name on client certificate client_cert_1.pem.
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if len(params.VerifiedChains) > 0 && (params.Leaf == nil || params.Leaf.Subject.CommonName != "foo.bar.hoo.com") {
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return nil, errors.New("server side params parsing error")
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}
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return &VerificationResults{}, nil
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}
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serverPeerCert, err := tls.LoadX509KeyPair(testdata.Path("server_cert_1.pem"),
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testdata.Path("server_key_1.pem"))
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if err != nil {
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t.Fatalf("Server is unable to parse peer certificates. Error: %v", err)
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}
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getRootCAsForServerBad := func(params *GetRootCAsParams) (*GetRootCAsResults, error) {
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return nil, fmt.Errorf("bad root certificate reloading")
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}
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for _, test := range []struct {
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desc string
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clientCert []tls.Certificate
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clientGetCert func(*tls.CertificateRequestInfo) (*tls.Certificate, error)
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clientRoot *x509.CertPool
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clientGetRoot func(params *GetRootCAsParams) (*GetRootCAsResults, error)
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clientVerifyFunc CustomVerificationFunc
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clientVType VerificationType
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clientExpectCreateError bool
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clientExpectHandshakeError bool
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serverMutualTLS bool
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serverCert []tls.Certificate
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serverGetCert func(*tls.ClientHelloInfo) (*tls.Certificate, error)
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serverRoot *x509.CertPool
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serverGetRoot func(params *GetRootCAsParams) (*GetRootCAsResults, error)
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serverVerifyFunc CustomVerificationFunc
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serverVType VerificationType
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serverExpectError bool
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}{
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// Client: nil setting
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// Server: only set serverCert with mutual TLS off
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// Expected Behavior: server side failure
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// Reason: if clientRoot, clientGetRoot and verifyFunc is not set, client
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// side doesn't provide any verification mechanism. We don't allow this
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// even setting vType to SkipVerification. Clients should at least provide
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// their own verification logic.
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{
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desc: "Client has no trust cert; server sends peer cert",
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clientVType: SkipVerification,
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clientExpectCreateError: true,
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serverCert: []tls.Certificate{serverPeerCert},
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serverVType: CertAndHostVerification,
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serverExpectError: true,
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},
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// Client: nil setting except verifyFuncGood
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// Server: only set serverCert with mutual TLS off
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// Expected Behavior: success
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// Reason: we will use verifyFuncGood to verify the server,
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// if either clientCert or clientGetCert is not set
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{
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desc: "Client has no trust cert with verifyFuncGood; server sends peer cert",
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clientVerifyFunc: clientVerifyFuncGood,
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clientVType: SkipVerification,
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serverCert: []tls.Certificate{serverPeerCert},
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serverVType: CertAndHostVerification,
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},
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// Client: only set clientRoot
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// Server: only set serverCert with mutual TLS off
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// Expected Behavior: server side failure and client handshake failure
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// Reason: client side sets vType to CertAndHostVerification, and will do
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// default hostname check. All the default hostname checks will fail in
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// this test suites.
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{
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desc: "Client has root cert; server sends peer cert",
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clientRoot: clientTrustPool,
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clientVType: CertAndHostVerification,
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clientExpectHandshakeError: true,
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serverCert: []tls.Certificate{serverPeerCert},
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serverVType: CertAndHostVerification,
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serverExpectError: true,
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},
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// Client: only set clientGetRoot
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// Server: only set serverCert with mutual TLS off
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// Expected Behavior: server side failure and client handshake failure
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// Reason: client side sets vType to CertAndHostVerification, and will do
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// default hostname check. All the default hostname checks will fail in
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// this test suites.
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{
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desc: "Client sets reload root function; server sends peer cert",
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clientGetRoot: getRootCAsForClient,
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clientVType: CertAndHostVerification,
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clientExpectHandshakeError: true,
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serverCert: []tls.Certificate{serverPeerCert},
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serverVType: CertAndHostVerification,
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serverExpectError: true,
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},
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// Client: set clientGetRoot and clientVerifyFunc
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// Server: only set serverCert with mutual TLS off
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// Expected Behavior: success
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{
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desc: "Client sets reload root function with verifyFuncGood; server sends peer cert",
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clientGetRoot: getRootCAsForClient,
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clientVerifyFunc: clientVerifyFuncGood,
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clientVType: CertVerification,
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serverCert: []tls.Certificate{serverPeerCert},
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serverVType: CertAndHostVerification,
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},
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// Client: set clientGetRoot and bad clientVerifyFunc function
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// Server: only set serverCert with mutual TLS off
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// Expected Behavior: server side failure and client handshake failure
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// Reason: custom verification function is bad
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{
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desc: "Client sets reload root function with verifyFuncBad; server sends peer cert",
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clientGetRoot: getRootCAsForClient,
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clientVerifyFunc: verifyFuncBad,
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clientVType: CertVerification,
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clientExpectHandshakeError: true,
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serverCert: []tls.Certificate{serverPeerCert},
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serverVType: CertVerification,
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serverExpectError: true,
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},
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// Client: set clientGetRoot and clientVerifyFunc
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// Server: nil setting
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// Expected Behavior: server side failure
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// Reason: server side must either set serverCert or serverGetCert
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{
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desc: "Client sets reload root function with verifyFuncGood; server sets nil",
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clientGetRoot: getRootCAsForClient,
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clientVerifyFunc: clientVerifyFuncGood,
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clientVType: CertVerification,
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serverVType: CertVerification,
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serverExpectError: true,
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},
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// Client: set clientGetRoot, clientVerifyFunc and clientCert
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// Server: set serverRoot and serverCert with mutual TLS on
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// Expected Behavior: success
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{
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desc: "Client sets peer cert, reload root function with verifyFuncGood; server sets peer cert and root cert; mutualTLS",
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clientCert: []tls.Certificate{clientPeerCert},
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clientGetRoot: getRootCAsForClient,
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clientVerifyFunc: clientVerifyFuncGood,
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clientVType: CertVerification,
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serverMutualTLS: true,
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serverCert: []tls.Certificate{serverPeerCert},
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serverRoot: serverTrustPool,
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serverVType: CertVerification,
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},
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// Client: set clientGetRoot, clientVerifyFunc and clientCert
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// Server: set serverCert, but not setting any of serverRoot, serverGetRoot
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// or serverVerifyFunc, with mutual TLS on
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// Expected Behavior: server side failure
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// Reason: server side needs to provide any verification mechanism when
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// mTLS in on, even setting vType to SkipVerification. Servers should at
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// least provide their own verification logic.
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{
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desc: "Client sets peer cert, reload root function with verifyFuncGood; server sets no verification; mutualTLS",
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clientCert: []tls.Certificate{clientPeerCert},
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clientGetRoot: getRootCAsForClient,
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clientVerifyFunc: clientVerifyFuncGood,
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clientVType: CertVerification,
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clientExpectHandshakeError: true,
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serverMutualTLS: true,
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serverCert: []tls.Certificate{serverPeerCert},
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serverVType: SkipVerification,
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serverExpectError: true,
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},
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// Client: set clientGetRoot, clientVerifyFunc and clientCert
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// Server: set serverGetRoot and serverCert with mutual TLS on
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// Expected Behavior: success
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{
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desc: "Client sets peer cert, reload root function with verifyFuncGood; Server sets peer cert, reload root function; mutualTLS",
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clientCert: []tls.Certificate{clientPeerCert},
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clientGetRoot: getRootCAsForClient,
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clientVerifyFunc: clientVerifyFuncGood,
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clientVType: CertVerification,
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serverMutualTLS: true,
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serverCert: []tls.Certificate{serverPeerCert},
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serverGetRoot: getRootCAsForServer,
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serverVType: CertVerification,
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},
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// Client: set clientGetRoot, clientVerifyFunc and clientCert
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// Server: set serverGetRoot returning error and serverCert with mutual
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// TLS on
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// Expected Behavior: server side failure
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// Reason: server side reloading returns failure
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{
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desc: "Client sets peer cert, reload root function with verifyFuncGood; Server sets peer cert, bad reload root function; mutualTLS",
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clientCert: []tls.Certificate{clientPeerCert},
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clientGetRoot: getRootCAsForClient,
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clientVerifyFunc: clientVerifyFuncGood,
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clientVType: CertVerification,
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serverMutualTLS: true,
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serverCert: []tls.Certificate{serverPeerCert},
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serverGetRoot: getRootCAsForServerBad,
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serverVType: CertVerification,
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serverExpectError: true,
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},
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// Client: set clientGetRoot, clientVerifyFunc and clientGetCert
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// Server: set serverGetRoot and serverGetCert with mutual TLS on
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// Expected Behavior: success
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{
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desc: "Client sets reload peer/root function with verifyFuncGood; Server sets reload peer/root function with verifyFuncGood; mutualTLS",
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clientGetCert: func(info *tls.CertificateRequestInfo) (*tls.Certificate, error) {
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return &clientPeerCert, nil
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},
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clientGetRoot: getRootCAsForClient,
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clientVerifyFunc: clientVerifyFuncGood,
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clientVType: CertVerification,
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serverMutualTLS: true,
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serverGetCert: func(info *tls.ClientHelloInfo) (*tls.Certificate, error) {
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return &serverPeerCert, nil
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},
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serverGetRoot: getRootCAsForServer,
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serverVerifyFunc: serverVerifyFunc,
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serverVType: CertVerification,
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},
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// Client: set everything but with the wrong peer cert not trusted by
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// server
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// Server: set serverGetRoot and serverGetCert with mutual TLS on
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// Expected Behavior: server side returns failure because of
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// certificate mismatch
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{
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desc: "Client sends wrong peer cert; Server sets reload peer/root function with verifyFuncGood; mutualTLS",
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clientGetCert: func(info *tls.CertificateRequestInfo) (*tls.Certificate, error) {
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return &serverPeerCert, nil
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},
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clientGetRoot: getRootCAsForClient,
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clientVerifyFunc: clientVerifyFuncGood,
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clientVType: CertVerification,
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serverMutualTLS: true,
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serverGetCert: func(info *tls.ClientHelloInfo) (*tls.Certificate, error) {
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return &serverPeerCert, nil
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},
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serverGetRoot: getRootCAsForServer,
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serverVerifyFunc: serverVerifyFunc,
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serverVType: CertVerification,
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serverExpectError: true,
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},
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// Client: set everything but with the wrong trust cert not trusting server
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// Server: set serverGetRoot and serverGetCert with mutual TLS on
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// Expected Behavior: server side and client side return failure due to
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// certificate mismatch and handshake failure
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{
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desc: "Client has wrong trust cert; Server sets reload peer/root function with verifyFuncGood; mutualTLS",
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clientGetCert: func(info *tls.CertificateRequestInfo) (*tls.Certificate, error) {
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return &clientPeerCert, nil
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},
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clientGetRoot: getRootCAsForServer,
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clientVerifyFunc: clientVerifyFuncGood,
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clientVType: CertVerification,
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clientExpectHandshakeError: true,
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serverMutualTLS: true,
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serverGetCert: func(info *tls.ClientHelloInfo) (*tls.Certificate, error) {
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return &serverPeerCert, nil
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},
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serverGetRoot: getRootCAsForServer,
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serverVerifyFunc: serverVerifyFunc,
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serverVType: CertVerification,
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serverExpectError: true,
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},
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// Client: set clientGetRoot, clientVerifyFunc and clientCert
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// Server: set everything but with the wrong peer cert not trusted by
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// client
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// Expected Behavior: server side and client side return failure due to
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// certificate mismatch and handshake failure
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{
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desc: "Client sets reload peer/root function with verifyFuncGood; Server sends wrong peer cert; mutualTLS",
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clientGetCert: func(info *tls.CertificateRequestInfo) (*tls.Certificate, error) {
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return &clientPeerCert, nil
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},
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clientGetRoot: getRootCAsForClient,
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clientVerifyFunc: clientVerifyFuncGood,
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clientVType: CertVerification,
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serverMutualTLS: true,
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serverGetCert: func(info *tls.ClientHelloInfo) (*tls.Certificate, error) {
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return &clientPeerCert, nil
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},
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serverGetRoot: getRootCAsForServer,
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serverVerifyFunc: serverVerifyFunc,
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serverVType: CertVerification,
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serverExpectError: true,
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},
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// Client: set clientGetRoot, clientVerifyFunc and clientCert
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// Server: set everything but with the wrong trust cert not trusting client
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// Expected Behavior: server side and client side return failure due to
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// certificate mismatch and handshake failure
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{
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desc: "Client sets reload peer/root function with verifyFuncGood; Server has wrong trust cert; mutualTLS",
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clientGetCert: func(info *tls.CertificateRequestInfo) (*tls.Certificate, error) {
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return &clientPeerCert, nil
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},
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clientGetRoot: getRootCAsForClient,
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clientVerifyFunc: clientVerifyFuncGood,
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clientVType: CertVerification,
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clientExpectHandshakeError: true,
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serverMutualTLS: true,
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serverGetCert: func(info *tls.ClientHelloInfo) (*tls.Certificate, error) {
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return &serverPeerCert, nil
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},
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serverGetRoot: getRootCAsForClient,
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serverVerifyFunc: serverVerifyFunc,
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serverVType: CertVerification,
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serverExpectError: true,
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},
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// Client: set clientGetRoot, clientVerifyFunc and clientCert
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// Server: set serverGetRoot and serverCert, but with bad verifyFunc
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// Expected Behavior: server side and client side return failure due to
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// server custom check fails
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{
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desc: "Client sets peer cert, reload root function with verifyFuncGood; Server sets bad custom check; mutualTLS",
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clientCert: []tls.Certificate{clientPeerCert},
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clientGetRoot: getRootCAsForClient,
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clientVerifyFunc: clientVerifyFuncGood,
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clientVType: CertVerification,
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clientExpectHandshakeError: true,
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serverMutualTLS: true,
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serverCert: []tls.Certificate{serverPeerCert},
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serverGetRoot: getRootCAsForServer,
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serverVerifyFunc: verifyFuncBad,
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serverVType: CertVerification,
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serverExpectError: true,
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},
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} {
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test := test
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t.Run(test.desc, func(t *testing.T) {
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done := make(chan credentials.AuthInfo, 1)
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lis, err := net.Listen("tcp", "localhost:0")
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if err != nil {
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t.Fatalf("Failed to listen: %v", err)
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}
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// Start a server using ServerOptions in another goroutine.
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serverOptions := &ServerOptions{
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Certificates: test.serverCert,
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GetCertificate: test.serverGetCert,
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RootCertificateOptions: RootCertificateOptions{
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RootCACerts: test.serverRoot,
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GetRootCAs: test.serverGetRoot,
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},
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RequireClientCert: test.serverMutualTLS,
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VerifyPeer: test.serverVerifyFunc,
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VType: test.serverVType,
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}
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go func(done chan credentials.AuthInfo, lis net.Listener, serverOptions *ServerOptions) {
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serverRawConn, err := lis.Accept()
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if err != nil {
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close(done)
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return
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}
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serverTLS, err := NewServerCreds(serverOptions)
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if err != nil {
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serverRawConn.Close()
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close(done)
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return
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}
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_, serverAuthInfo, err := serverTLS.ServerHandshake(serverRawConn)
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if err != nil {
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serverRawConn.Close()
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close(done)
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return
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}
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done <- serverAuthInfo
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}(done, lis, serverOptions)
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defer lis.Close()
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// Start a client using ClientOptions and connects to the server.
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lisAddr := lis.Addr().String()
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conn, err := net.Dial("tcp", lisAddr)
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if err != nil {
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t.Fatalf("Client failed to connect to %s. Error: %v", lisAddr, err)
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}
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defer conn.Close()
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clientOptions := &ClientOptions{
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Certificates: test.clientCert,
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GetClientCertificate: test.clientGetCert,
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VerifyPeer: test.clientVerifyFunc,
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RootCertificateOptions: RootCertificateOptions{
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RootCACerts: test.clientRoot,
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GetRootCAs: test.clientGetRoot,
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},
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VType: test.clientVType,
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}
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clientTLS, newClientErr := NewClientCreds(clientOptions)
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if newClientErr != nil && test.clientExpectCreateError {
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return
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}
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if newClientErr != nil && !test.clientExpectCreateError ||
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newClientErr == nil && test.clientExpectCreateError {
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t.Fatalf("Expect error: %v, but err is %v",
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test.clientExpectCreateError, newClientErr)
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}
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_, clientAuthInfo, handshakeErr := clientTLS.ClientHandshake(context.Background(),
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lisAddr, conn)
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// wait until server sends serverAuthInfo or fails.
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serverAuthInfo, ok := <-done
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if !ok && test.serverExpectError {
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return
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}
|
|
if ok && test.serverExpectError || !ok && !test.serverExpectError {
|
|
t.Fatalf("Server side error mismatch, got %v, want %v", !ok, test.serverExpectError)
|
|
}
|
|
if handshakeErr != nil && test.clientExpectHandshakeError {
|
|
return
|
|
}
|
|
if handshakeErr != nil && !test.clientExpectHandshakeError ||
|
|
handshakeErr == nil && test.clientExpectHandshakeError {
|
|
t.Fatalf("Expect error: %v, but err is %v",
|
|
test.clientExpectHandshakeError, handshakeErr)
|
|
}
|
|
if !compare(clientAuthInfo, serverAuthInfo) {
|
|
t.Fatalf("c.ClientHandshake(_, %v, _) = %v, want %v.", lisAddr,
|
|
clientAuthInfo, serverAuthInfo)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func readTrustCert(fileName string) (*x509.CertPool, error) {
|
|
trustData, err := ioutil.ReadFile(fileName)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
trustBlock, _ := pem.Decode(trustData)
|
|
if trustBlock == nil {
|
|
return nil, err
|
|
}
|
|
trustCert, err := x509.ParseCertificate(trustBlock.Bytes)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
trustPool := x509.NewCertPool()
|
|
trustPool.AddCert(trustCert)
|
|
return trustPool, nil
|
|
}
|
|
|
|
func compare(a1, a2 credentials.AuthInfo) bool {
|
|
if a1.AuthType() != a2.AuthType() {
|
|
return false
|
|
}
|
|
switch a1.AuthType() {
|
|
case "tls":
|
|
state1 := a1.(credentials.TLSInfo).State
|
|
state2 := a2.(credentials.TLSInfo).State
|
|
if state1.Version == state2.Version &&
|
|
state1.HandshakeComplete == state2.HandshakeComplete &&
|
|
state1.CipherSuite == state2.CipherSuite &&
|
|
state1.NegotiatedProtocol == state2.NegotiatedProtocol {
|
|
return true
|
|
}
|
|
return false
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
func TestAdvancedTLSOverrideServerName(t *testing.T) {
|
|
expectedServerName := "server.name"
|
|
clientTrustPool, err := readTrustCert(testdata.Path("client_trust_cert_1.pem"))
|
|
if err != nil {
|
|
t.Fatalf("Client is unable to load trust certs. Error: %v", err)
|
|
}
|
|
clientOptions := &ClientOptions{
|
|
RootCertificateOptions: RootCertificateOptions{
|
|
RootCACerts: clientTrustPool,
|
|
},
|
|
ServerNameOverride: expectedServerName,
|
|
}
|
|
c, err := NewClientCreds(clientOptions)
|
|
if err != nil {
|
|
t.Fatalf("Client is unable to create credentials. Error: %v", err)
|
|
}
|
|
c.OverrideServerName(expectedServerName)
|
|
if c.Info().ServerName != expectedServerName {
|
|
t.Fatalf("c.Info().ServerName = %v, want %v", c.Info().ServerName, expectedServerName)
|
|
}
|
|
}
|
|
|
|
func TestTLSClone(t *testing.T) {
|
|
expectedServerName := "server.name"
|
|
clientTrustPool, err := readTrustCert(testdata.Path("client_trust_cert_1.pem"))
|
|
if err != nil {
|
|
t.Fatalf("Client is unable to load trust certs. Error: %v", err)
|
|
}
|
|
clientOptions := &ClientOptions{
|
|
RootCertificateOptions: RootCertificateOptions{
|
|
RootCACerts: clientTrustPool,
|
|
},
|
|
ServerNameOverride: expectedServerName,
|
|
}
|
|
c, err := NewClientCreds(clientOptions)
|
|
if err != nil {
|
|
t.Fatalf("Failed to create new client: %v", err)
|
|
}
|
|
cc := c.Clone()
|
|
if cc.Info().ServerName != expectedServerName {
|
|
t.Fatalf("cc.Info().ServerName = %v, want %v", cc.Info().ServerName, expectedServerName)
|
|
}
|
|
cc.OverrideServerName("")
|
|
if c.Info().ServerName != expectedServerName {
|
|
t.Fatalf("Change in clone should not affect the original, "+
|
|
"c.Info().ServerName = %v, want %v", c.Info().ServerName, expectedServerName)
|
|
}
|
|
|
|
}
|
|
|
|
func TestAppendH2ToNextProtos(t *testing.T) {
|
|
tests := []struct {
|
|
name string
|
|
ps []string
|
|
want []string
|
|
}{
|
|
{
|
|
name: "empty",
|
|
ps: nil,
|
|
want: []string{"h2"},
|
|
},
|
|
{
|
|
name: "only h2",
|
|
ps: []string{"h2"},
|
|
want: []string{"h2"},
|
|
},
|
|
{
|
|
name: "with h2",
|
|
ps: []string{"alpn", "h2"},
|
|
want: []string{"alpn", "h2"},
|
|
},
|
|
{
|
|
name: "no h2",
|
|
ps: []string{"alpn"},
|
|
want: []string{"alpn", "h2"},
|
|
},
|
|
}
|
|
for _, tt := range tests {
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
if got := appendH2ToNextProtos(tt.ps); !reflect.DeepEqual(got, tt.want) {
|
|
t.Errorf("appendH2ToNextProtos() = %v, want %v", got, tt.want)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
type nonSyscallConn struct {
|
|
net.Conn
|
|
}
|
|
|
|
func TestWrapSyscallConn(t *testing.T) {
|
|
sc := &syscallConn{}
|
|
nsc := &nonSyscallConn{}
|
|
|
|
wrapConn := WrapSyscallConn(sc, nsc)
|
|
if _, ok := wrapConn.(syscall.Conn); !ok {
|
|
t.Errorf("returned conn (type %T) doesn't implement syscall.Conn, want implement",
|
|
wrapConn)
|
|
}
|
|
}
|