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
|
// Copyright 2015 The appc Authors
//
// 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.
// Package util defines convenience functions for handling slices and debugging.
//
// Note: this package is an implementation detail and shouldn't be used outside
// of docker2aci.
package util
import (
"crypto/tls"
"fmt"
"net"
"net/http"
"time"
"github.com/appc/spec/pkg/acirenderer"
)
var (
secureClient = newClient(false)
insecureClient = newClient(true)
)
// Quote takes a slice of strings and returns another slice with them quoted.
func Quote(l []string) []string {
var quoted []string
for _, s := range l {
quoted = append(quoted, fmt.Sprintf("%q", s))
}
return quoted
}
// ReverseImages takes an acirenderer.Images and reverses it.
func ReverseImages(s acirenderer.Images) acirenderer.Images {
var o acirenderer.Images
for i := len(s) - 1; i >= 0; i-- {
o = append(o, s[i])
}
return o
}
// In checks whether el is in list.
func In(list []string, el string) bool {
return IndexOf(list, el) != -1
}
// IndexOf returns the index of el in list, or -1 if it's not found.
func IndexOf(list []string, el string) int {
for i, x := range list {
if el == x {
return i
}
}
return -1
}
// GetTLSClient gets an HTTP client that behaves like the default HTTP
// client, but optionally skips the TLS certificate verification.
func GetTLSClient(skipTLSCheck bool) *http.Client {
if skipTLSCheck {
return insecureClient
}
return secureClient
}
func newClient(skipTLSCheck bool) *http.Client {
dialer := &net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
} // values taken from stdlib v1.5.3
tr := &http.Transport{
Proxy: http.ProxyFromEnvironment,
Dial: dialer.Dial,
TLSHandshakeTimeout: 10 * time.Second,
} // values taken from stdlib v1.5.3
if skipTLSCheck {
tr.TLSClientConfig = &tls.Config{
InsecureSkipVerify: true,
}
}
return &http.Client{
Transport: tr,
}
}
|
