-
Notifications
You must be signed in to change notification settings - Fork 0
/
certstore.go
141 lines (124 loc) · 4.14 KB
/
certstore.go
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
/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package gossip
import (
"bytes"
"encoding/hex"
"github.com/hyperledger/fabric/gossip/api"
"github.com/hyperledger/fabric/gossip/common"
"github.com/hyperledger/fabric/gossip/gossip/pull"
"github.com/hyperledger/fabric/gossip/identity"
"github.com/hyperledger/fabric/gossip/util"
proto "github.com/hyperledger/fabric/protos/gossip"
"github.com/pkg/errors"
)
// certStore supports pull dissemination of identity messages
type certStore struct {
selfIdentity api.PeerIdentityType
idMapper identity.Mapper
pull pull.Mediator
logger util.Logger
mcs api.MessageCryptoService
}
func newCertStore(puller pull.Mediator, idMapper identity.Mapper, selfIdentity api.PeerIdentityType, mcs api.MessageCryptoService) *certStore {
selfPKIID := idMapper.GetPKIidOfCert(selfIdentity)
logger := util.GetLogger(util.GossipLogger, hex.EncodeToString(selfPKIID))
certStore := &certStore{
mcs: mcs,
pull: puller,
idMapper: idMapper,
selfIdentity: selfIdentity,
logger: logger,
}
if err := certStore.idMapper.Put(selfPKIID, selfIdentity); err != nil {
certStore.logger.Panicf("Failed associating self PKIID to cert: %+v", errors.WithStack(err))
}
selfIDMsg, err := certStore.createIdentityMessage()
if err != nil {
certStore.logger.Panicf("Failed creating self identity message: %+v", errors.WithStack(err))
}
puller.Add(selfIDMsg)
puller.RegisterMsgHook(pull.RequestMsgType, func(_ []string, msgs []*proto.SignedGossipMessage, _ proto.ReceivedMessage) {
for _, msg := range msgs {
pkiID := common.PKIidType(msg.GetPeerIdentity().PkiId)
cert := api.PeerIdentityType(msg.GetPeerIdentity().Cert)
if err := certStore.idMapper.Put(pkiID, cert); err != nil {
certStore.logger.Warningf("Failed adding identity %v, reason %+v", cert, errors.WithStack(err))
}
}
})
return certStore
}
func (cs *certStore) handleMessage(msg proto.ReceivedMessage) {
if update := msg.GetGossipMessage().GetDataUpdate(); update != nil {
for _, env := range update.Data {
m, err := env.ToGossipMessage()
if err != nil {
cs.logger.Warningf("Data update contains an invalid message: %+v", errors.WithStack(err))
return
}
if !m.IsIdentityMsg() {
cs.logger.Warning("Got a non-identity message:", m, "aborting")
return
}
if err := cs.validateIdentityMsg(m); err != nil {
cs.logger.Warningf("Failed validating identity message: %+v", errors.WithStack(err))
return
}
}
}
cs.pull.HandleMessage(msg)
}
func (cs *certStore) validateIdentityMsg(msg *proto.SignedGossipMessage) error {
idMsg := msg.GetPeerIdentity()
if idMsg == nil {
return errors.Errorf("Identity empty: %+v", msg)
}
pkiID := idMsg.PkiId
cert := idMsg.Cert
calculatedPKIID := cs.mcs.GetPKIidOfCert(api.PeerIdentityType(cert))
claimedPKIID := common.PKIidType(pkiID)
if !bytes.Equal(calculatedPKIID, claimedPKIID) {
return errors.Errorf("Calculated pkiID doesn't match identity: calculated: %v, claimedPKI-ID: %v", calculatedPKIID, claimedPKIID)
}
verifier := func(peerIdentity []byte, signature, message []byte) error {
return cs.mcs.Verify(api.PeerIdentityType(peerIdentity), signature, message)
}
err := msg.Verify(cert, verifier)
if err != nil {
return errors.Wrap(err, "Failed verifying message")
}
return cs.mcs.ValidateIdentity(api.PeerIdentityType(idMsg.Cert))
}
func (cs *certStore) createIdentityMessage() (*proto.SignedGossipMessage, error) {
pi := &proto.PeerIdentity{
Cert: cs.selfIdentity,
Metadata: nil,
PkiId: cs.idMapper.GetPKIidOfCert(cs.selfIdentity),
}
m := &proto.GossipMessage{
Channel: nil,
Nonce: 0,
Tag: proto.GossipMessage_EMPTY,
Content: &proto.GossipMessage_PeerIdentity{
PeerIdentity: pi,
},
}
signer := func(msg []byte) ([]byte, error) {
return cs.idMapper.Sign(msg)
}
sMsg := &proto.SignedGossipMessage{
GossipMessage: m,
}
_, err := sMsg.Sign(signer)
return sMsg, errors.WithStack(err)
}
func (cs *certStore) suspectPeers(isSuspected api.PeerSuspector) {
cs.idMapper.SuspectPeers(isSuspected)
}
func (cs *certStore) stop() {
cs.pull.Stop()
cs.idMapper.Stop()
}