1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
package security
import (
"context"
"crypto/tls"
"crypto/x509"
"google.golang.org/grpc/credentials/tls/certprovider/pemfile"
"google.golang.org/grpc/security/advancedtls"
"io/ioutil"
"strings"
"time"
grpc_auth "github.com/grpc-ecosystem/go-grpc-middleware/auth"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/peer"
"google.golang.org/grpc/status"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/util"
)
const credRefreshingInterval = 5 * time.Minute
type Authenticator struct {
AllowedWildcardDomain string
AllowedCommonNames map[string]bool
}
func LoadServerTLS(config *util.ViperProxy, component string) (grpc.ServerOption, grpc.ServerOption) {
if config == nil {
return nil, nil
}
serverOptions := pemfile.Options{
CertFile: config.GetString(component + ".cert"),
KeyFile: config.GetString(component + ".key"),
RefreshDuration: credRefreshingInterval,
}
serverIdentityProvider, err := pemfile.NewProvider(serverOptions)
if err != nil {
glog.Warningf("pemfile.NewProvider(%v) failed: %v", serverOptions, err)
return nil, nil
}
defer serverIdentityProvider.Close()
serverRootOptions := pemfile.Options{
RootFile: config.GetString("grpc.ca"),
RefreshDuration: credRefreshingInterval,
}
serverRootProvider, err := pemfile.NewProvider(serverRootOptions)
if err != nil {
glog.Warningf("pemfile.NewProvider(%v) failed: %v", serverRootOptions, err)
return nil, nil
}
defer serverIdentityProvider.Close()
// Start a server and create a client using advancedtls API with Provider.
options := &advancedtls.ServerOptions{
IdentityOptions: advancedtls.IdentityCertificateOptions{
IdentityProvider: serverIdentityProvider,
},
RootOptions: advancedtls.RootCertificateOptions{
RootProvider: serverRootProvider,
},
RequireClientCert: true,
VerifyPeer: func(params *advancedtls.VerificationFuncParams) (*advancedtls.VerificationResults, error) {
glog.V(0).Infof("Client common name: %s.\n", params.Leaf.Subject.CommonName)
return &advancedtls.VerificationResults{}, nil
},
VType: advancedtls.CertVerification,
}
ta, err := advancedtls.NewServerCreds(options)
if err != nil {
glog.Warningf("advancedtls.NewServerCreds(%v) failed: %v", options, err)
return nil, nil
}
allowedCommonNames := config.GetString(component + ".allowed_commonNames")
allowedWildcardDomain := config.GetString("grpc.allowed_wildcard_domain")
if allowedCommonNames != "" || allowedWildcardDomain != "" {
allowedCommonNamesMap := make(map[string]bool)
for _, s := range strings.Split(allowedCommonNames, ",") {
allowedCommonNamesMap[s] = true
}
auther := Authenticator{
AllowedCommonNames: allowedCommonNamesMap,
AllowedWildcardDomain: allowedWildcardDomain,
}
return grpc.Creds(ta), grpc.UnaryInterceptor(grpc_auth.UnaryServerInterceptor(auther.Authenticate))
}
return grpc.Creds(ta), nil
}
func LoadClientTLS(config *util.ViperProxy, component string) grpc.DialOption {
if config == nil {
return grpc.WithInsecure()
}
certFileName, keyFileName, caFileName := config.GetString(component+".cert"), config.GetString(component+".key"), config.GetString("grpc.ca")
if certFileName == "" || keyFileName == "" || caFileName == "" {
return grpc.WithInsecure()
}
// Initialize credential struct using reloading API.
clientOptions := pemfile.Options{
CertFile: certFileName,
KeyFile: keyFileName,
RootFile: caFileName,
RefreshDuration: credRefreshingInterval,
}
clientProvider, err := pemfile.NewProvider(clientOptions)
if err != nil {
glog.Warningf("pemfile.NewProvider(%v) failed %v", clientOptions, err)
return grpc.WithInsecure()
}
defer clientProvider.Close()
options := &advancedtls.ClientOptions{
VerifyPeer: func(params *advancedtls.VerificationFuncParams) (*advancedtls.VerificationResults, error) {
return &advancedtls.VerificationResults{}, nil
},
RootOptions: advancedtls.RootCertificateOptions{
RootProvider: clientProvider,
},
VType: advancedtls.CertVerification,
}
ta, err := advancedtls.NewClientCreds(options)
if err != nil {
glog.Warningf("advancedtls.NewClientCreds(%v) failed: %v", options, err)
return grpc.WithInsecure()
}
return grpc.WithTransportCredentials(ta)
}
func LoadClientTLSHTTP(clientCertFile string) *tls.Config {
clientCerts, err := ioutil.ReadFile(clientCertFile)
if err != nil {
glog.Fatal(err)
}
certPool := x509.NewCertPool()
ok := certPool.AppendCertsFromPEM(clientCerts)
if !ok {
glog.Fatalf("Error processing client certificate in %s\n", clientCertFile)
}
return &tls.Config{
ClientCAs: certPool,
ClientAuth: tls.RequireAndVerifyClientCert,
}
}
func (a Authenticator) Authenticate(ctx context.Context) (newCtx context.Context, err error) {
p, ok := peer.FromContext(ctx)
if !ok {
return ctx, status.Error(codes.Unauthenticated, "no peer found")
}
tlsAuth, ok := p.AuthInfo.(credentials.TLSInfo)
if !ok {
return ctx, status.Error(codes.Unauthenticated, "unexpected peer transport credentials")
}
if len(tlsAuth.State.VerifiedChains) == 0 || len(tlsAuth.State.VerifiedChains[0]) == 0 {
return ctx, status.Error(codes.Unauthenticated, "could not verify peer certificate")
}
commonName := tlsAuth.State.VerifiedChains[0][0].Subject.CommonName
if a.AllowedWildcardDomain != "" && strings.HasSuffix(commonName, a.AllowedWildcardDomain) {
return ctx, nil
}
if _, ok := a.AllowedCommonNames[commonName]; ok {
return ctx, nil
}
return ctx, status.Errorf(codes.Unauthenticated, "invalid subject common name: %s", commonName)
}
|
