Add SSH sniffer

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世界 2024-08-20 18:56:50 +08:00
parent b2c708a3e6
commit e39a28ed5a
No known key found for this signature in database
GPG key ID: CD109927C34A63C4
6 changed files with 73 additions and 15 deletions

26
common/sniff/ssh.go Normal file
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@ -0,0 +1,26 @@
package sniff
import (
"bufio"
"context"
"io"
"os"
"strings"
"github.com/sagernet/sing-box/adapter"
C "github.com/sagernet/sing-box/constant"
)
func SSH(_ context.Context, metadata *adapter.InboundContext, reader io.Reader) error {
scanner := bufio.NewScanner(reader)
if !scanner.Scan() {
return os.ErrInvalid
}
fistLine := scanner.Text()
if !strings.HasPrefix(fistLine, "SSH-2.0-") {
return os.ErrInvalid
}
metadata.Protocol = C.ProtocolSSH
metadata.Client = fistLine[8:]
return nil
}

26
common/sniff/ssh_test.go Normal file
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@ -0,0 +1,26 @@
package sniff_test
import (
"bytes"
"context"
"encoding/hex"
"testing"
"github.com/sagernet/sing-box/adapter"
"github.com/sagernet/sing-box/common/sniff"
C "github.com/sagernet/sing-box/constant"
"github.com/stretchr/testify/require"
)
func TestSniffSSH(t *testing.T) {
t.Parallel()
pkt, err := hex.DecodeString("5353482d322e302d64726f70626561720d0a000001a40a1492892570d1223aef61b0d647972c8bd30000009f637572766532353531392d7368613235362c637572766532353531392d736861323536406c69627373682e6f72672c6469666669652d68656c6c6d616e2d67726f757031342d7368613235362c6469666669652d68656c6c6d616e2d67726f757031342d736861312c6b6578677565737332406d6174742e7563632e61736e2e61752c6b65782d7374726963742d732d763030406f70656e7373682e636f6d000000207373682d656432353531392c7273612d736861322d3235362c7373682d7273610000003363686163686132302d706f6c7931333035406f70656e7373682e636f6d2c6165733132382d6374722c6165733235362d6374720000003363686163686132302d706f6c7931333035406f70656e7373682e636f6d2c6165733132382d6374722c6165733235362d63747200000017686d61632d736861312c686d61632d736861322d32353600000017686d61632d736861312c686d61632d736861322d323536000000046e6f6e65000000046e6f6e65000000000000000000000000002aa6ed090585b7d635b6")
require.NoError(t, err)
var metadata adapter.InboundContext
err = sniff.SSH(context.TODO(), &metadata, bytes.NewReader(pkt))
require.NoError(t, err)
require.Equal(t, C.ProtocolSSH, metadata.Protocol)
require.Equal(t, "dropbear", metadata.Client)
}

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@ -8,6 +8,7 @@ const (
ProtocolSTUN = "stun"
ProtocolBitTorrent = "bittorrent"
ProtocolDTLS = "dtls"
ProtocolSSH = "ssh"
)
const (

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@ -7,14 +7,15 @@ icon: material/new-box
:material-plus: QUIC client type detect support for QUIC
:material-plus: Chromium support for QUIC
:material-plus: BitTorrent support
:material-plus: DTLS support
:material-plus: DTLS support
:material-plus: SSH support
If enabled in the inbound, the protocol and domain name (if present) of by the connection can be sniffed.
#### Supported Protocols
| Network | Protocol | Domain Name | Client |
|:-------:|:------------:|:-----------:|:----------------:|
| :-----: | :----------: | :---------: | :--------------: |
| TCP | `http` | Host | / |
| TCP | `tls` | Server Name | / |
| UDP | `quic` | Server Name | QUIC Client Type |
@ -22,9 +23,10 @@ If enabled in the inbound, the protocol and domain name (if present) of by the c
| TCP/UDP | `dns` | / | / |
| TCP/UDP | `bittorrent` | / | / |
| UDP | `dtls` | / | / |
| TCP | `ssh` | / | SSH Client Name |
| QUIC Client | Type |
|:------------------------:|:----------:|
| :----------------------: | :--------: |
| Chromium/Cronet | `chrimium` |
| Safari/Apple Network API | `safari` |
| Firefox / uquic firefox | `firefox` |

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@ -7,24 +7,26 @@ icon: material/new-box
:material-plus: QUIC 的 客户端类型探测支持
:material-plus: QUIC 的 Chromium 支持
:material-plus: BitTorrent 支持
:material-plus: DTLS 支持
:material-plus: DTLS 支持
:material-plus: SSH 支持
如果在入站中启用,则可以嗅探连接的协议和域名(如果存在)。
#### 支持的协议
| 网络 | 协议 | 域名 | 客户端 |
|:-------:|:------------:|:-----------:|:----------:|
| TCP | `http` | Host | / |
| TCP | `tls` | Server Name | / |
| 网络 | 协议 | 域名 | 客户端 |
| :-----: | :----------: | :---------: | :-------------: |
| TCP | `http` | Host | / |
| TCP | `tls` | Server Name | / |
| UDP | `quic` | Server Name | QUIC 客户端类型 |
| UDP | `stun` | / | / |
| TCP/UDP | `dns` | / | / |
| TCP/UDP | `bittorrent` | / | / |
| UDP | `dtls` | / | / |
| UDP | `stun` | / | / |
| TCP/UDP | `dns` | / | / |
| TCP/UDP | `bittorrent` | / | / |
| UDP | `dtls` | / | / |
| TCP | `SSH` | / | SSH 客户端名称 |
| QUIC 客户端 | 类型 |
|:------------------------:|:----------:|
| QUIC 客户端 | 类型 |
| :----------------------: | :--------: |
| Chromium/Cronet | `chrimium` |
| Safari/Apple Network API | `safari` |
| Firefox / uquic firefox | `firefox` |

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@ -860,9 +860,10 @@ func (r *Router) RouteConnection(ctx context.Context, conn net.Conn, metadata ad
conn,
buffer,
time.Duration(metadata.InboundOptions.SniffTimeout),
sniff.StreamDomainNameQuery,
sniff.TLSClientHello,
sniff.HTTPHost,
sniff.StreamDomainNameQuery,
sniff.SSH,
sniff.BitTorrent,
)
if err == nil {