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
|
package ssh
import (
"io"
"github.com/git-lfs/pktline"
"github.com/rubyist/tracerx"
)
func pktlineReader(p Pktline) io.Reader {
if pl, ok := p.(*pktline.Pktline); ok {
return pktline.NewPktlineReaderFromPktline(pl, 65536)
}
tp := p.(*TraceablePktline)
return pktline.NewPktlineReaderFromPktline(tp.pl, 65536)
}
type Pktline interface {
ReadPacketList() ([]string, error)
ReadPacketTextWithLength() (string, int, error)
WritePacket([]byte) error
WritePacketText(string) error
WriteDelim() error
WriteFlush() error
}
type TraceablePktline struct {
id int
pl *pktline.Pktline
}
func (tp *TraceablePktline) ReadPacketList() ([]string, error) {
var list []string
for {
data, pktLen, err := tp.pl.ReadPacketTextWithLength()
if err != nil {
return nil, err
}
if pktLen <= 1 {
tracerx.Printf("packet %02x < %04x", tp.id, pktLen)
} else {
tracerx.Printf("packet %02x < %s", tp.id, data)
}
if pktLen == 0 {
break
}
list = append(list, data)
}
return list, nil
}
func (tp *TraceablePktline) ReadPacketTextWithLength() (string, int, error) {
s, pktLen, err := tp.pl.ReadPacketTextWithLength()
if err != nil {
return "", 0, err
}
if pktLen <= 1 {
tracerx.Printf("packet %02x < %04x", tp.id, pktLen)
} else {
tracerx.Printf("packet %02x < %s", tp.id, s)
}
return s, pktLen, nil
}
func (tp *TraceablePktline) WritePacket(b []byte) error {
// Don't trace because this is probably binary data.
return tp.pl.WritePacket(b)
}
func (tp *TraceablePktline) WritePacketText(s string) error {
tracerx.Printf("packet %02x > %s", tp.id, s)
return tp.pl.WritePacketText(s)
}
func (tp *TraceablePktline) WriteDelim() error {
tracerx.Printf("packet %02x > 0001", tp.id)
return tp.pl.WriteDelim()
}
func (tp *TraceablePktline) WriteFlush() error {
tracerx.Printf("packet %02x > 0000", tp.id)
return tp.pl.WriteFlush()
}
|
