脚本之家,脚本语言编程技术及教程分享平台!
分类导航

Python|VBS|Ruby|Lua|perl|VBA|Golang|PowerShell|Erlang|autoit|Dos|bat|

服务器之家 - 脚本之家 - Golang - golang 通过ssh代理连接mysql的操作

golang 通过ssh代理连接mysql的操作

2021-03-08 00:48a1658616397 Golang

这篇文章主要介绍了golang 通过ssh代理连接mysql的操作,具有很好的参考价值,希望对大家有所帮助。一起跟随小编过来看看吧

我就废话不多说了,大家还是直接看代码吧~

?
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
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
package main
import (
    "bytes"
    "context"
    "database/sql"
    "errors"
    "fmt"
    "github.com/go-sql-driver/mysql"
    "golang.org/x/crypto/ssh"
    "io"
    "io/ioutil"
    "net"
    "os"
)
type ViaSSHDialer struct {
    client *ssh.Client
    _ *context.Context
}
 
func (self *ViaSSHDialer) Dial(context context.Context,addr string) (net.Conn, error) {
    return self.client.Dial("tcp", addr)
}
type remoteScriptType byte
type remoteShellType byte
 
const (
    cmdLine remoteScriptType = iota
    rawScript
    scriptFile
    interactiveShell remoteShellType = iota
    nonInteractiveShell
)
 
type Client struct {
    client *ssh.Client
}
func main() {
    client, err := DialWithPasswd("ip:port", "user", "password")
    if err != nil {
        panic(err)
    }
    out, err := client.Cmd("ls -l").Output()
    if err != nil {
        panic(err)
    }
    fmt.Println(string(out))
    // Now we register the ViaSSHDialer with the ssh connection as a parameter
    mysql.RegisterDialContext("mysql+tcp", (&ViaSSHDialer{client.client,nil}).Dial)
    //mysql.RegisterDial("mysql+tcp", (&ViaSSHDialer{client.client}).Dial)
    if db, err := sql.Open("mysql", fmt.Sprintf("%s:%s@mysql+tcp(%s)/%s","Aiqitest", "uf6amk146d2aoemi7", "139.196.174.234:3306", "Aiqitest"));
    err == nil {
        fmt.Printf("Successfully connected to the db\n")
        if rows, err := db.Query("SELECT id, name FROM table ORDER BY id"); err == nil {
            for rows.Next() {
                var id int64
                var name string
                rows.Scan(&id, &name)
                fmt.Printf("ID: %d Name: %s\n", id, name)
            }
            rows.Close()
        } else {
            fmt.Printf("Failure: %s", err.Error())
        }
 
        db.Close()
}
    }
 
// DialWithPasswd starts a client connection to the given SSH server with passwd authmethod.
func DialWithPasswd(addr, user, passwd string) (*Client, error) {
    config := &ssh.ClientConfig{
        User: user,
        Auth: []ssh.AuthMethod{
            ssh.Password(passwd),
        },
        HostKeyCallback: ssh.HostKeyCallback(func(hostname string, remote net.Addr, key ssh.PublicKey) error { return nil }),
    }
 
    return Dial("tcp", addr, config)
}
 
// DialWithKey starts a client connection to the given SSH server with key authmethod.
func DialWithKey(addr, user, keyfile string) (*Client, error) {
    key, err := ioutil.ReadFile(keyfile)
    if err != nil {
        return nil, err
    }
 
    signer, err := ssh.ParsePrivateKey(key)
    if err != nil {
        return nil, err
    }
 
    config := &ssh.ClientConfig{
        User: user,
        Auth: []ssh.AuthMethod{
            ssh.PublicKeys(signer),
        },
        HostKeyCallback: ssh.HostKeyCallback(func(hostname string, remote net.Addr, key ssh.PublicKey) error { return nil }),
    }
 
    return Dial("tcp", addr, config)
}
 
// DialWithKeyWithPassphrase same as DialWithKey but with a passphrase to decrypt the private key
func DialWithKeyWithPassphrase(addr, user, keyfile string, passphrase string) (*Client, error) {
    key, err := ioutil.ReadFile(keyfile)
    if err != nil {
        return nil, err
    }
 
    signer, err := ssh.ParsePrivateKeyWithPassphrase(key, []byte(passphrase))
    if err != nil {
        return nil, err
    }
 
    config := &ssh.ClientConfig{
        User: user,
        Auth: []ssh.AuthMethod{
            ssh.PublicKeys(signer),
        },
        HostKeyCallback: ssh.HostKeyCallback(func(hostname string, remote net.Addr, key ssh.PublicKey) error { return nil }),
    }
    return Dial("tcp", addr, config)
}
 
// Dial starts a client connection to the given SSH server.
// This is wrap the ssh.Dial
func Dial(network, addr string, config *ssh.ClientConfig) (*Client, error) {
    client, err := ssh.Dial(network, addr, config)
    if err != nil {
        return nil, err
    }
    return &Client{
        client: client,
    }, nil
}
 
func (c *Client) Close() error {
    return c.client.Close()
}
 
// Cmd create a command on client
func (c *Client) Cmd(cmd string) *remoteScript {
    return &remoteScript{
        _type: cmdLine,
        client: c.client,
        script: bytes.NewBufferString(cmd + "\n"),
    }
}
 
// Script
func (c *Client) Script(script string) *remoteScript {
    return &remoteScript{
        _type: rawScript,
        client: c.client,
        script: bytes.NewBufferString(script + "\n"),
    }
}
 
// ScriptFile
func (c *Client) ScriptFile(fname string) *remoteScript {
    return &remoteScript{
        _type:   scriptFile,
        client:   c.client,
        scriptFile: fname,
    }
}
 
type remoteScript struct {
    client   *ssh.Client
    _type   remoteScriptType
    script   *bytes.Buffer
    scriptFile string
    err    error
 
    stdout io.Writer
    stderr io.Writer
}
 
// Run
func (rs *remoteScript) Run() error {
    if rs.err != nil {
        fmt.Println(rs.err)
        return rs.err
    }
 
    if rs._type == cmdLine {
        return rs.runCmds()
    } else if rs._type == rawScript {
        return rs.runScript()
    } else if rs._type == scriptFile {
        return rs.runScriptFile()
    } else {
        return errors.New("Not supported remoteScript type")
    }
}
 
func (rs *remoteScript) Output() ([]byte, error) {
    if rs.stdout != nil {
        return nil, errors.New("Stdout already set")
    }
    var out bytes.Buffer
    rs.stdout = &out
    err := rs.Run()
    return out.Bytes(), err
}
 
func (rs *remoteScript) SmartOutput() ([]byte, error) {
    if rs.stdout != nil {
        return nil, errors.New("Stdout already set")
    }
    if rs.stderr != nil {
        return nil, errors.New("Stderr already set")
    }
 
    var (
        stdout bytes.Buffer
        stderr bytes.Buffer
    )
    rs.stdout = &stdout
    rs.stderr = &stderr
    err := rs.Run()
    if err != nil {
        return stderr.Bytes(), err
    }
    return stdout.Bytes(), err
}
 
func (rs *remoteScript) Cmd(cmd string) *remoteScript {
    _, err := rs.script.WriteString(cmd + "\n")
    if err != nil {
        rs.err = err
    }
    return rs
}
 
func (rs *remoteScript) SetStdio(stdout, stderr io.Writer) *remoteScript {
    rs.stdout = stdout
    rs.stderr = stderr
    return rs
}
 
func (rs *remoteScript) runCmd(cmd string) error {
    session, err := rs.client.NewSession()
    if err != nil {
        return err
    }
    defer session.Close()
 
    session.Stdout = rs.stdout
    session.Stderr = rs.stderr
 
    if err := session.Run(cmd); err != nil {
        return err
    }
    return nil
}
 
func (rs *remoteScript) runCmds() error {
    for {
        statment, err := rs.script.ReadString('\n')
        if err == io.EOF {
            break
        }
        if err != nil {
            return err
        }
 
        if err := rs.runCmd(statment); err != nil {
            return err
        }
    }
 
    return nil
}
 
func (rs *remoteScript) runScript() error {
    session, err := rs.client.NewSession()
    if err != nil {
        return err
    }
 
    session.Stdin = rs.script
    session.Stdout = rs.stdout
    session.Stderr = rs.stderr
    if err := session.Shell(); err != nil {
        return err
    }
    if err := session.Wait(); err != nil {
        return err
    }
 
    return nil
}
 
func (rs *remoteScript) runScriptFile() error {
    var buffer bytes.Buffer
    file, err := os.Open(rs.scriptFile)
    if err != nil {
        return err
    }
    _, err = io.Copy(&buffer, file)
    if err != nil {
        return err
    }
 
    rs.script = &buffer
    return rs.runScript()
}
 
type remoteShell struct {
    client     *ssh.Client
    requestPty   bool
    terminalConfig *TerminalConfig
 
    stdin io.Reader
    stdout io.Writer
    stderr io.Writer
}
 
type TerminalConfig struct {
    Term  string
    Hight int
    Weight int
    Modes ssh.TerminalModes
}
 
// Terminal create a interactive shell on client.
func (c *Client) Terminal(config *TerminalConfig) *remoteShell {
    return &remoteShell{
        client:     c.client,
        terminalConfig: config,
        requestPty:   true,
    }
}
 
// Shell create a noninteractive shell on client.
func (c *Client) Shell() *remoteShell {
    return &remoteShell{
        client:   c.client,
        requestPty: false,
    }
}
 
func (rs *remoteShell) SetStdio(stdin io.Reader, stdout, stderr io.Writer) *remoteShell {
    rs.stdin = stdin
    rs.stdout = stdout
    rs.stderr = stderr
    return rs
}
 
// Start start a remote shell on client
func (rs *remoteShell) Start() error {
    session, err := rs.client.NewSession()
    if err != nil {
        return err
    }
    defer session.Close()
 
    if rs.stdin == nil {
        session.Stdin = os.Stdin
    } else {
        session.Stdin = rs.stdin
    }
    if rs.stdout == nil {
        session.Stdout = os.Stdout
    } else {
        session.Stdout = rs.stdout
    }
    if rs.stderr == nil {
        session.Stderr = os.Stderr
    } else {
        session.Stderr = rs.stderr
    }
 
    if rs.requestPty {
        tc := rs.terminalConfig
        if tc == nil {
            tc = &TerminalConfig{
                Term:  "xterm",
                Hight: 40,
                Weight: 80,
            }
        }
        if err := session.RequestPty(tc.Term, tc.Hight, tc.Weight, tc.Modes); err != nil {
            return err
        }
    }
 
    if err := session.Shell(); err != nil {
        return err
    }
 
    if err := session.Wait(); err != nil {
        return err
    }
    return nil
}

补充:用golang写socks5代理服务器2-ssh远程代理

上次用golang来实现本地socks5代理,然而使用代理当然是为了和谐上网,所以这次来介绍用ssh来实现远程代理,用到官方ssh包

golang.org/x/crypto/ssh

用golang连接ssh并不难

读取密钥,设置配置,连接服务器就ok了(不建议用用户名+密码方式连接ssh)

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
b, err := ioutil.ReadFile("/home/myml/.ssh/id_rsa")
if err != nil {
log.Println(err)
return
}
pKey, err := ssh.ParsePrivateKey(b)
if err != nil {
log.Println(err)
return
}
config := ssh.ClientConfig{
User: "userName",
Auth: []ssh.AuthMethod{
 ssh.PublicKeys(pKey),
},
}
client, err = ssh.Dial("tcp", "Host:22", &config)
if err != nil {
log.Println(err)
return
}
log.Println("连接服务器成功")
defer client.Close()

这样你就得到了一个client,它有个Dial()函数用来创建socket连接,这个是在服务器上创建的,也就可以突破网络限制了,加上上次的sock5代理,把net.Dial改为client.Dial,就能让服务器来代理访问了

?
1
2
3
4
5
6
7
8
server, err := client.Dial("tcp", addr)
if err != nil {
log.Println(err)
return
}
conn.Write([]byte{0x05, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00})
go io.Copy(server, conn)
io.Copy(conn, server)

下面是能成功运行并进行远程代理的代码(在Chrome和proxychains测试),ssh服务器和配置信息要修改为自己的

?
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
// socks5ProxyProxy project main.go
package main
import (
 "bytes"
 "encoding/binary"
 "fmt"
 "io"
 "io/ioutil"
 "log"
 "net"
 "golang.org/x/crypto/ssh"
)
 
func socks5Proxy(conn net.Conn) {
 defer conn.Close()
 
 var b [1024]byte
 n, err := conn.Read(b[:])
 if err != nil {
 log.Println(err)
 return
 }
 log.Printf("% x", b[:n])
 conn.Write([]byte{0x05, 0x00})
 
 n, err = conn.Read(b[:])
 if err != nil {
 log.Println(err)
 return
 }
 log.Printf("% x", b[:n])
 
 var addr string
 switch b[3] {
 case 0x01:
 sip := sockIP{}
 if err := binary.Read(bytes.NewReader(b[4:n]), binary.BigEndian, &sip); err != nil {
  log.Println("请求解析错误")
  return
 }
 addr = sip.toAddr()
 case 0x03:
 host := string(b[5 : n-2])
 var port uint16
 err = binary.Read(bytes.NewReader(b[n-2:n]), binary.BigEndian, &port)
 if err != nil {
  log.Println(err)
  return
 }
 addr = fmt.Sprintf("%s:%d", host, port)
 }
 
 server, err := client.Dial("tcp", addr)
 if err != nil {
 log.Println(err)
 return
 }
 conn.Write([]byte{0x05, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00})
 go io.Copy(server, conn)
 io.Copy(conn, server)
}
 
type sockIP struct {
 A, B, C, D byte
 PORT    uint16
}
 
func (ip sockIP) toAddr() string {
 return fmt.Sprintf("%d.%d.%d.%d:%d", ip.A, ip.B, ip.C, ip.D, ip.PORT)
}
 
func socks5ProxyStart() {
 log.SetFlags(log.Ltime | log.Lshortfile)
 
 server, err := net.Listen("tcp", ":8080")
 if err != nil {
 log.Panic(err)
 }
 defer server.Close()
 log.Println("开始接受连接")
 for {
 client, err := server.Accept()
 if err != nil {
  log.Println(err)
  return
 }
 log.Println("一个新连接")
 go socks5Proxy(client)
 }
}
 
var client *ssh.Client
func main() {
 b, err := ioutil.ReadFile("/home/myml/.ssh/id_rsa")
 if err != nil {
 log.Println(err)
 return
 }
 pKey, err := ssh.ParsePrivateKey(b)
 if err != nil {
 log.Println(err)
 return
 }
 config := ssh.ClientConfig{
 User: "user",
 Auth: []ssh.AuthMethod{
  ssh.PublicKeys(pKey),
 },
 }
 client, err = ssh.Dial("tcp", "host:22", &config)
 if err != nil {
 log.Println(err)
 return
 }
 log.Println("连接服务器成功")
 defer client.Close()
 client.Dial()
 socks5ProxyStart()
 return
}

以上为个人经验,希望能给大家一个参考,也希望大家多多支持服务器之家。如有错误或未考虑完全的地方,望不吝赐教。

原文链接:https://blog.csdn.net/a1658616397/article/details/100890414

延伸 · 阅读

精彩推荐
  • Golanggolang 通过ssh代理连接mysql的操作

    golang 通过ssh代理连接mysql的操作

    这篇文章主要介绍了golang 通过ssh代理连接mysql的操作,具有很好的参考价值,希望对大家有所帮助。一起跟随小编过来看看吧...

    a165861639710342021-03-08
  • Golanggo语言制作端口扫描器

    go语言制作端口扫描器

    本文给大家分享的是使用go语言编写的TCP端口扫描器,可以选择IP范围,扫描的端口,以及多线程,有需要的小伙伴可以参考下。 ...

    脚本之家3642020-04-25
  • Golanggo日志系统logrus显示文件和行号的操作

    go日志系统logrus显示文件和行号的操作

    这篇文章主要介绍了go日志系统logrus显示文件和行号的操作,具有很好的参考价值,希望对大家有所帮助。一起跟随小编过来看看吧...

    SmallQinYan12302021-02-02
  • Golanggolang的httpserver优雅重启方法详解

    golang的httpserver优雅重启方法详解

    这篇文章主要给大家介绍了关于golang的httpserver优雅重启的相关资料,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,...

    helight2992020-05-14
  • GolangGolang中Bit数组的实现方式

    Golang中Bit数组的实现方式

    这篇文章主要介绍了Golang中Bit数组的实现方式,具有很好的参考价值,希望对大家有所帮助。一起跟随小编过来看看吧...

    天易独尊11682021-06-09
  • Golanggolang json.Marshal 特殊html字符被转义的解决方法

    golang json.Marshal 特殊html字符被转义的解决方法

    今天小编就为大家分享一篇golang json.Marshal 特殊html字符被转义的解决方法,具有很好的参考价值,希望对大家有所帮助。一起跟随小编过来看看吧 ...

    李浩的life12792020-05-27
  • GolangGolang通脉之数据类型详情

    Golang通脉之数据类型详情

    这篇文章主要介绍了Golang通脉之数据类型,在编程语言中标识符就是定义的具有某种意义的词,比如变量名、常量名、函数名等等,Go语言中标识符允许由...

    4272021-11-24
  • Golanggolang如何使用struct的tag属性的详细介绍

    golang如何使用struct的tag属性的详细介绍

    这篇文章主要介绍了golang如何使用struct的tag属性的详细介绍,从例子说起,小编觉得挺不错的,现在分享给大家,也给大家做个参考。一起跟随小编过来看...

    Go语言中文网11352020-05-21