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
|
package main
import (
"errors"
"os"
"path/filepath"
"github.com/containernetworking/cni/pkg/types"
)
const (
// confFileName is the name of the dns masq conf file
confFileName = "dnsmasq.conf"
// hostsFileName is the name of the addnhosts file
hostsFileName = "addnhosts"
// pidFileName is the file where the dnsmasq file is stored
pidFileName = "pidfile"
)
const dnsMasqTemplate = `## WARNING: THIS IS AN AUTOGENERATED FILE
## AND SHOULD NOT BE EDITED MANUALLY AS IT
## LIKELY TO AUTOMATICALLY BE REPLACED.
strict-order
local=/{{.Domain}}/
domain={{.Domain}}
expand-hosts
pid-file={{.PidFile}}
except-interface=lo
bind-dynamic
no-hosts
interface={{.NetworkInterface}}
addn-hosts={{.AddOnHostsFile}}`
var (
// ErrBinaryNotFound means that the dnsmasq binary was not found
ErrBinaryNotFound = errors.New("unable to locate dnsmasq in path")
// ErrNoIPAddressFound means that CNI was unable to resolve an IP address in the CNI configuration
ErrNoIPAddressFound = errors.New("no ip address was found in the network")
)
// DNSNameConf represents the cni config with the domain name attribute
type DNSNameConf struct {
types.NetConf
DomainName string `json:"domainName"`
RuntimeConfig struct { // The capability arg
Aliases map[string][]string `json:"aliases"`
} `json:"runtimeConfig,omitempty"`
}
// dnsNameFile describes the plugin's attributes
type dnsNameFile struct {
AddOnHostsFile string
Binary string
ConfigFile string
Domain string
NetworkInterface string
PidFile string
}
// dnsNameConfPath tells where we store the conf, pid, and hosts files
func dnsNameConfPath() string {
xdgRuntimeDir := os.Getenv("XDG_RUNTIME_DIR")
if xdgRuntimeDir != "" {
return filepath.Join(xdgRuntimeDir, "containers/cni/dnsname")
}
return "/run/containers/cni/dnsname"
}
|
