forked from Lafeng/deblocus
/
bootContext.go
233 lines (206 loc) · 4.78 KB
/
bootContext.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
223
224
225
226
227
228
229
230
231
232
233
package main
import (
"flag"
"fmt"
c "github.com/Lafeng/deblocus/crypto"
ex "github.com/Lafeng/deblocus/exception"
log "github.com/Lafeng/deblocus/golang/glog"
t "github.com/Lafeng/deblocus/tunnel"
"io"
"net"
"os"
"runtime"
"strings"
"time"
)
const (
DH_METHOD = "ECDHE-P256"
)
type Component interface {
Stats() string
Close()
}
type bootContext struct {
config string
isServ bool
csc bool
ccc bool
vFlag int
debug bool
components []Component
closeable []io.Closer
}
func (c *bootContext) parse() {
runtime.GOMAXPROCS(runtime.NumCPU())
if !c.isServ {
c.isServ = c.ccc || t.DetectRunAsServ()
}
if c.config == "" && !c.csc {
var ok bool
c.config, ok = t.DetectFile(c.isServ)
fatalIf(!ok, "No such file "+c.config+
"\nCreate/put config in typical path or indicate it explicitly.")
}
// inject parameters into sub-packages
t.VERSION = version
t.VER_STRING = versionString()
t.DEBUG = c.debug
ex.DEBUG = c.debug
}
func (c *bootContext) doStats() {
if c.components != nil {
for _, t := range c.components {
fmt.Fprintln(os.Stderr, t.Stats())
}
}
}
func (c *bootContext) doClose() {
if c.closeable != nil {
for _, t := range c.closeable {
t.Close()
}
}
if c.components != nil {
for _, t := range c.components {
t.Close()
}
}
}
func (c *bootContext) setLogVerbose(verbose int) {
if c.vFlag >= 0 {
log.SetLogVerbose(c.vFlag)
} else {
log.SetLogVerbose(verbose)
}
}
func (c *bootContext) cscHandler(output string) {
// ./deblocus -csc [1024 or 2048]
var rsaParam string
switch flag.NArg() {
case 0:
case 1:
rsaParam = flag.Arg(0)
default:
fatal("Incorrect arguments")
}
err := t.GenerateD5sTemplate(output, rsaParam)
fatalIf(err != nil, err)
}
func (c *bootContext) cccHandler(output string) {
// ./deblocus -ccc SERV_ADDR:PORT USER
if flag.NArg() == 2 {
addr := flag.Arg(0)
v, err := t.IsValidHost(addr)
fatalIf(!v, err)
d5sc, err := t.Parse_d5s_file(c.config)
fatalIf(err != nil, advice(err))
d5sc.Listen = addr
err = t.CreateClientConfig(output, d5sc, flag.Arg(1))
fatalIf(err != nil, err)
} else {
fatal("Incorrect arguments")
}
}
func (context *bootContext) startClient() {
defer func() {
ex.CatchException(advice(recover()))
sigChan <- t.Bye
}()
conf, err := t.Parse_d5c_file(context.config)
if err != nil {
log.Fatalln(advice(err))
}
context.setLogVerbose(conf.Verbose)
log.Infoln(versionString())
log.Infoln("Socks5/Http is working at", conf.ListenAddr)
ln, err := net.ListenTCP("tcp", conf.ListenAddr)
if err != nil {
log.Fatalln(err)
}
defer ln.Close()
dhKey, _ := c.NewDHKey(DH_METHOD)
client := t.NewClient(conf, dhKey)
context.components = append(context.components, client)
context.closeable = append(context.closeable, ln)
go client.StartTun(true)
for {
conn, err := ln.Accept()
if err == nil {
if client.IsReady() {
go client.ClientServe(conn)
continue
} else {
log.Errorf("No available tunnels for servicing new request")
time.Sleep(time.Second)
}
}
t.SafeClose(conn)
}
}
func (context *bootContext) startServer() {
defer func() {
ex.CatchException(advice(recover()))
sigChan <- t.Bye
}()
conf, err := t.Parse_d5s_file(context.config)
if err != nil {
log.Fatalln(advice(err))
}
context.setLogVerbose(conf.Verbose)
log.Infoln(versionString())
log.Infoln("Server is listening on", conf.ListenAddr)
ln, err := net.ListenTCP("tcp", conf.ListenAddr)
if err != nil {
log.Fatalln(err)
}
defer ln.Close()
dhKey, _ := c.NewDHKey(DH_METHOD)
server := t.NewServer(conf, dhKey)
context.components = append(context.components, server)
context.closeable = append(context.closeable, ln)
for {
conn, err := ln.AcceptTCP()
if err == nil {
go server.TunnelServe(conn)
} else {
t.SafeClose(conn)
}
}
}
func fatalIf(cond bool, args ...interface{}) {
if cond {
fatal(args...)
}
}
func fatalf(format string, args ...interface{}) {
msg := fmt.Sprintf(format, args...)
if !strings.HasSuffix(msg, "\n") {
msg += "\n"
}
fmt.Fprint(os.Stderr, msg)
context.doClose()
os.Exit(1)
}
func fatal(args ...interface{}) {
msg := fmt.Sprint(args...)
if !strings.HasSuffix(msg, "\n") {
msg += "\n"
}
fmt.Fprint(os.Stderr, msg)
context.doClose()
os.Exit(1)
}
func advice(e interface{}) interface{} {
if err, y := e.(error); y {
var incompatible bool
// 0.10 altered config field names
incompatible = incompatible || strings.HasPrefix(err.Error(), t.UNRECOGNIZED_DIRECTIVES.Error())
// 0.12 altered cipher
incompatible = incompatible || strings.HasPrefix(err.Error(), t.UNSUPPORTED_CIPHER.Error())
if incompatible {
fmt.Fprintf(os.Stderr, " * Maybe there is an issue of some incompatible alterations caused.\n")
fmt.Fprintf(os.Stderr, " * Please read %s/wiki to learn more.\n", project_url)
}
}
return e
}