forked from ligato/vpp-agent
-
Notifications
You must be signed in to change notification settings - Fork 0
/
dump_vppcalls.go
222 lines (192 loc) · 6.92 KB
/
dump_vppcalls.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
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
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
// Copyright (c) 2019 Cisco and/or its affiliates.
//
// 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 vpp2001_379
import (
"encoding/hex"
"net"
"strconv"
"github.com/pkg/errors"
ipsec "github.com/ligato/vpp-agent/api/models/vpp/ipsec"
vpp_ipsec "github.com/ligato/vpp-agent/plugins/vpp/binapi/vpp2001_379/ipsec"
"github.com/ligato/vpp-agent/plugins/vpp/ipsecplugin/vppcalls"
)
// DumpIPSecSA implements IPSec handler.
func (h *IPSecVppHandler) DumpIPSecSA() (saList []*vppcalls.IPSecSaDetails, err error) {
return h.DumpIPSecSAWithIndex(^uint32(0)) // Get everything
}
// DumpIPSecSAWithIndex implements IPSec handler.
func (h *IPSecVppHandler) DumpIPSecSAWithIndex(saID uint32) (saList []*vppcalls.IPSecSaDetails, err error) {
saDetails, err := h.dumpSecurityAssociations(saID)
if err != nil {
return nil, err
}
for _, saData := range saDetails {
// Skip tunnel interfaces
if saData.SwIfIndex != ^uint32(0) {
continue
}
var tunnelSrcAddr, tunnelDstAddr net.IP
if saData.Entry.TunnelDst.Af == vpp_ipsec.ADDRESS_IP6 {
src := saData.Entry.TunnelSrc.Un.GetIP6()
dst := saData.Entry.TunnelDst.Un.GetIP6()
tunnelSrcAddr, tunnelDstAddr = net.IP(src[:]), net.IP(dst[:])
} else {
src := saData.Entry.TunnelSrc.Un.GetIP4()
dst := saData.Entry.TunnelDst.Un.GetIP4()
tunnelSrcAddr, tunnelDstAddr = net.IP(src[:]), net.IP(dst[:])
}
sa := &ipsec.SecurityAssociation{
Index: strconv.Itoa(int(saData.Entry.SadID)),
Spi: saData.Entry.Spi,
Protocol: ipsec.SecurityAssociation_IPSecProtocol(saData.Entry.Protocol),
CryptoAlg: ipsec.CryptoAlg(saData.Entry.CryptoAlgorithm),
CryptoKey: hex.EncodeToString(saData.Entry.CryptoKey.Data[:saData.Entry.CryptoKey.Length]),
IntegAlg: ipsec.IntegAlg(saData.Entry.IntegrityAlgorithm),
IntegKey: hex.EncodeToString(saData.Entry.IntegrityKey.Data[:saData.Entry.IntegrityKey.Length]),
UseEsn: (saData.Entry.Flags & vpp_ipsec.IPSEC_API_SAD_FLAG_USE_ESN) != 0,
UseAntiReplay: (saData.Entry.Flags & vpp_ipsec.IPSEC_API_SAD_FLAG_USE_ANTI_REPLAY) != 0,
TunnelSrcAddr: tunnelSrcAddr.String(),
TunnelDstAddr: tunnelDstAddr.String(),
EnableUdpEncap: (saData.Entry.Flags & vpp_ipsec.IPSEC_API_SAD_FLAG_UDP_ENCAP) != 0,
}
meta := &vppcalls.IPSecSaMeta{
SaID: saData.Entry.SadID,
IfIdx: saData.SwIfIndex,
Salt: saData.Salt,
SeqOutbound: saData.SeqOutbound,
LastSeqInbound: saData.LastSeqInbound,
ReplayWindow: saData.ReplayWindow,
TotalDataSize: saData.TotalDataSize,
}
saList = append(saList, &vppcalls.IPSecSaDetails{
Sa: sa,
Meta: meta,
})
}
return saList, nil
}
// DumpIPSecSPD implements IPSec handler.
func (h *IPSecVppHandler) DumpIPSecSPD() (spdList []*vppcalls.IPSecSpdDetails, err error) {
metadata := make(map[string]*vppcalls.SpdMeta)
// TODO dump IPSec SPD interfaces is not available in current VPP version
// Get all VPP SPD indexes
spdIndexes, err := h.dumpSpdIndexes()
if err != nil {
return nil, errors.Errorf("failed to dump SPD indexes: %v", err)
}
for spdIdx, numPolicies := range spdIndexes {
spd := &ipsec.SecurityPolicyDatabase{
Index: strconv.Itoa(spdIdx),
}
req := &vpp_ipsec.IpsecSpdDump{
SpdID: uint32(spdIdx),
SaID: ^uint32(0),
}
requestCtx := h.callsChannel.SendMultiRequest(req)
for {
spdDetails := &vpp_ipsec.IpsecSpdDetails{}
stop, err := requestCtx.ReceiveReply(spdDetails)
if stop {
break
}
if err != nil {
return nil, err
}
// Addresses
remoteStartAddr, remoteStopAddr := ipsecAddrToIP(spdDetails.Entry.RemoteAddressStart), ipsecAddrToIP(spdDetails.Entry.RemoteAddressStop)
localStartAddr, localStopAddr := ipsecAddrToIP(spdDetails.Entry.LocalAddressStart), ipsecAddrToIP(spdDetails.Entry.LocalAddressStop)
// Prepare policy entry and put to the SPD
policyEntry := &ipsec.SecurityPolicyDatabase_PolicyEntry{
SaIndex: strconv.Itoa(int(spdDetails.Entry.SaID)),
Priority: spdDetails.Entry.Priority,
IsOutbound: uintToBool(spdDetails.Entry.IsOutbound),
RemoteAddrStart: remoteStartAddr.String(),
RemoteAddrStop: remoteStopAddr.String(),
LocalAddrStart: localStartAddr.String(),
LocalAddrStop: localStopAddr.String(),
Protocol: uint32(spdDetails.Entry.Protocol),
RemotePortStart: uint32(spdDetails.Entry.RemotePortStart),
RemotePortStop: resetPort(spdDetails.Entry.RemotePortStop),
LocalPortStart: uint32(spdDetails.Entry.LocalPortStart),
LocalPortStop: resetPort(spdDetails.Entry.LocalPortStop),
Action: ipsec.SecurityPolicyDatabase_PolicyEntry_Action(spdDetails.Entry.Policy),
}
spd.PolicyEntries = append(spd.PolicyEntries, policyEntry)
// Prepare meta and put to the metadata map
meta := &vppcalls.SpdMeta{
SaID: spdDetails.Entry.SaID,
Policy: uint8(spdDetails.Entry.Policy),
}
metadata[strconv.Itoa(int(spdDetails.Entry.SaID))] = meta
}
// Store SPD in list
spdList = append(spdList, &vppcalls.IPSecSpdDetails{
Spd: spd,
PolicyMeta: metadata,
NumPolicies: numPolicies,
})
}
return spdList, nil
}
// Get all indexes of SPD configured on the VPP
func (h *IPSecVppHandler) dumpSpdIndexes() (map[int]uint32, error) {
// SPD index to number of policies
spdIndexes := make(map[int]uint32)
req := &vpp_ipsec.IpsecSpdsDump{}
reqCtx := h.callsChannel.SendMultiRequest(req)
for {
spdDetails := &vpp_ipsec.IpsecSpdsDetails{}
stop, err := reqCtx.ReceiveReply(spdDetails)
if stop {
break
}
if err != nil {
return nil, err
}
spdIndexes[int(spdDetails.SpdID)] = spdDetails.Npolicies
}
return spdIndexes, nil
}
// Get all security association (used also for tunnel interfaces) in binary api format
func (h *IPSecVppHandler) dumpSecurityAssociations(saID uint32) (saList []*vpp_ipsec.IpsecSaDetails, err error) {
req := &vpp_ipsec.IpsecSaDump{
SaID: saID,
}
requestCtx := h.callsChannel.SendMultiRequest(req)
for {
saDetails := &vpp_ipsec.IpsecSaDetails{}
stop, err := requestCtx.ReceiveReply(saDetails)
if stop {
break
}
if err != nil {
return nil, err
}
saList = append(saList, saDetails)
}
return saList, nil
}
// ResetPort returns 0 if stop port has maximum value (default VPP value if stop port is not defined)
func resetPort(port uint16) uint32 {
if port == ^uint16(0) {
return 0
}
return uint32(port)
}
func uintToBool(input uint8) bool {
if input == 1 {
return true
}
return false
}