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
|
package main
import (
"bufio"
"errors"
"fmt"
"io"
"log"
)
/* todo : use real error code
* Many of which will be the same
*/
const (
ipcErrorNoPeer = 0
ipcErrorNoKeyValue = 1
ipcErrorInvalidKey = 2
ipcErrorInvalidPrivateKey = 3
ipcErrorInvalidPublicKey = 4
ipcErrorInvalidPort = 5
)
type IPCError struct {
Code int
}
func (s *IPCError) Error() string {
return fmt.Sprintf("IPC error: %d", s.Code)
}
func (s *IPCError) ErrorCode() int {
return s.Code
}
// Writes the configuration to the socket
func ipcGetOperation(socket *bufio.ReadWriter, dev *Device) {
}
// Creates new config, from old and socket message
func ipcSetOperation(dev *Device, socket *bufio.ReadWriter) *IPCError {
scanner := bufio.NewScanner(socket)
dev.mutex.Lock()
defer dev.mutex.Unlock()
for scanner.Scan() {
var key string
var value string
var peer *Peer
// Parse line
line := scanner.Text()
if line == "\n" {
break
}
fmt.Println(line)
n, err := fmt.Sscanf(line, "%s=%s\n", &key, &value)
if n != 2 || err != nil {
fmt.Println(err, n)
return &IPCError{Code: ipcErrorNoKeyValue}
}
switch key {
/* Interface configuration */
case "private_key":
if value == "" {
dev.privateKey = NoisePrivateKey{}
} else {
err := dev.privateKey.FromHex(value)
if err != nil {
return &IPCError{Code: ipcErrorInvalidPrivateKey}
}
}
case "listen_port":
_, err := fmt.Sscanf(value, "%ud", &dev.listenPort)
if err != nil {
return &IPCError{Code: ipcErrorInvalidPort}
}
case "fwmark":
panic(nil) // not handled yet
case "public_key":
var pubKey NoisePublicKey
err := pubKey.FromHex(value)
if err != nil {
return &IPCError{Code: ipcErrorInvalidPublicKey}
}
found, ok := dev.peers[pubKey]
if ok {
peer = found
} else {
newPeer := &Peer{
publicKey: pubKey,
}
peer = newPeer
dev.peers[pubKey] = newPeer
}
case "replace_peers":
default:
/* Peer configuration */
if peer == nil {
return &IPCError{Code: ipcErrorNoPeer}
}
switch key {
case "remove":
peer.mutex.Lock()
peer = nil
case "preshared_key":
func() {
peer.mutex.Lock()
defer peer.mutex.Unlock()
}()
case "endpoint":
func() {
peer.mutex.Lock()
defer peer.mutex.Unlock()
}()
case "persistent_keepalive_interval":
func() {
peer.mutex.Lock()
defer peer.mutex.Unlock()
}()
case "replace_allowed_ips":
// remove peer from trie
case "allowed_ip":
/* Invalid key */
default:
return &IPCError{Code: ipcErrorInvalidKey}
}
}
}
return nil
}
func ipcListen(dev *Device, socket io.ReadWriter) error {
buffered := func(s io.ReadWriter) *bufio.ReadWriter {
reader := bufio.NewReader(s)
writer := bufio.NewWriter(s)
return bufio.NewReadWriter(reader, writer)
}(socket)
for {
op, err := buffered.ReadString('\n')
if err != nil {
return err
}
log.Println(op)
switch op {
case "set=1\n":
err := ipcSetOperation(dev, buffered)
if err != nil {
fmt.Fprintf(buffered, "errno=%d\n", err.ErrorCode())
return err
} else {
fmt.Fprintf(buffered, "errno=0\n")
}
buffered.Flush()
case "get=1\n":
default:
return errors.New("handle this please")
}
}
}
|
