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
|
// Copyright (C) 2016 Nippon Telegraph and Telephone Corporation.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build linux
package server
import (
"bytes"
"fmt"
"net"
"os"
"syscall"
"testing"
"time"
"unsafe"
)
func Test_buildTcpMD5Sig(t *testing.T) {
s, _ := buildTcpMD5Sig("1.2.3.4", "hello")
if unsafe.Sizeof(s) != 216 {
t.Error("TCPM5Sig struct size is wrong", unsafe.Sizeof(s))
}
buf1 := make([]uint8, 216)
p := unsafe.Pointer(&s)
for i := uintptr(0); i < 216; i++ {
buf1[i] = *(*byte)(unsafe.Pointer(uintptr(p) + i))
}
buf2 := []uint8{2, 0, 0, 0, 1, 2, 3, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 104, 101, 108, 108, 111, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
if bytes.Equal(buf1, buf2) {
t.Log("OK")
} else {
t.Error("Something wrong v4")
}
}
func Test_buildTcpMD5Sigv6(t *testing.T) {
s, _ := buildTcpMD5Sig("fe80::4850:31ff:fe01:fc55", "helloworld")
buf1 := make([]uint8, 216)
p := unsafe.Pointer(&s)
for i := uintptr(0); i < 216; i++ {
buf1[i] = *(*byte)(unsafe.Pointer(uintptr(p) + i))
}
buf2 := []uint8{10, 0, 0, 0, 0, 0, 0, 0, 254, 128, 0, 0, 0, 0, 0, 0, 72, 80, 49, 255, 254, 1, 252, 85, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 0, 0, 0, 0, 0, 104, 101, 108, 108, 111, 119, 111, 114, 108, 100, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
buf2[0] = syscall.AF_INET6
if bytes.Equal(buf1, buf2) {
t.Log("OK")
} else {
t.Error("Something wrong v6")
}
}
func Test_DialTCP_FDleak(t *testing.T) {
openFds := func() int {
pid := os.Getpid()
f, err := os.OpenFile(fmt.Sprintf("/proc/%d/fdinfo", pid), os.O_RDONLY, 0)
if err != nil {
t.Fatal(err)
}
defer f.Close()
names, err := f.Readdirnames(0)
if err != nil {
t.Fatal(err)
}
return len(names)
}
before := openFds()
for i := 0; i < 10; i++ {
laddr, _ := net.ResolveTCPAddr("tcp", net.JoinHostPort("127.0.0.1", "0"))
d := tcpDialer{
Dialer: net.Dialer{
LocalAddr: laddr,
Timeout: 1 * time.Second,
},
}
if _, err := d.DialTCP("127.0.0.1", 1); err == nil {
t.Fatalf("should not succeed")
}
}
if after := openFds(); before != after {
t.Fatalf("could be fd leak, %d %d", before, after)
}
}
|
