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
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
package common
import (
"net"
"strings"
"github.com/containers/podman/v2/cmd/podman/parse"
"github.com/containers/podman/v2/libpod/define"
"github.com/containers/podman/v2/pkg/domain/entities"
"github.com/containers/podman/v2/pkg/specgen"
"github.com/pkg/errors"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
)
func GetNetFlags() *pflag.FlagSet {
netFlags := pflag.FlagSet{}
netFlags.StringSlice(
"add-host", []string{},
"Add a custom host-to-IP mapping (host:ip) (default [])",
)
netFlags.StringSlice(
"dns", containerConfig.DNSServers(),
"Set custom DNS servers",
)
netFlags.StringSlice(
"dns-opt", containerConfig.DNSOptions(),
"Set custom DNS options",
)
netFlags.StringSlice(
"dns-search", containerConfig.DNSSearches(),
"Set custom DNS search domains",
)
netFlags.String(
"ip", "",
"Specify a static IPv4 address for the container",
)
netFlags.String(
"mac-address", "",
"Container MAC address (e.g. 92:d0:c6:0a:29:33)",
)
netFlags.String(
"network", containerConfig.NetNS(),
"Connect a container to a network",
)
netFlags.StringSliceP(
"publish", "p", []string{},
"Publish a container's port, or a range of ports, to the host (default [])",
)
netFlags.Bool(
"no-hosts", false,
"Do not create /etc/hosts within the container, instead use the version from the image",
)
return &netFlags
}
func NetFlagsToNetOptions(cmd *cobra.Command) (*entities.NetOptions, error) {
var (
err error
)
opts := entities.NetOptions{}
opts.AddHosts, err = cmd.Flags().GetStringSlice("add-host")
if err != nil {
return nil, err
}
// Verify the additional hosts are in correct format
for _, host := range opts.AddHosts {
if _, err := parse.ValidateExtraHost(host); err != nil {
return nil, err
}
}
if cmd.Flags().Changed("dns") {
servers, err := cmd.Flags().GetStringSlice("dns")
if err != nil {
return nil, err
}
for _, d := range servers {
if d == "none" {
opts.UseImageResolvConf = true
if len(servers) > 1 {
return nil, errors.Errorf("%s is not allowed to be specified with other DNS ip addresses", d)
}
break
}
dns := net.ParseIP(d)
if dns == nil {
return nil, errors.Errorf("%s is not an ip address", d)
}
opts.DNSServers = append(opts.DNSServers, dns)
}
}
if cmd.Flags().Changed("dns-opt") {
options, err := cmd.Flags().GetStringSlice("dns-opt")
if err != nil {
return nil, err
}
opts.DNSOptions = options
}
if cmd.Flags().Changed("dns-search") {
dnsSearches, err := cmd.Flags().GetStringSlice("dns-search")
if err != nil {
return nil, err
}
// Validate domains are good
for _, dom := range dnsSearches {
if dom == "." {
if len(dnsSearches) > 1 {
return nil, errors.Errorf("cannot pass additional search domains when also specifying '.'")
}
continue
}
if _, err := parse.ValidateDomain(dom); err != nil {
return nil, err
}
}
opts.DNSSearch = dnsSearches
}
m, err := cmd.Flags().GetString("mac-address")
if err != nil {
return nil, err
}
if len(m) > 0 {
mac, err := net.ParseMAC(m)
if err != nil {
return nil, err
}
opts.StaticMAC = &mac
}
inputPorts, err := cmd.Flags().GetStringSlice("publish")
if err != nil {
return nil, err
}
if len(inputPorts) > 0 {
opts.PublishPorts, err = createPortBindings(inputPorts)
if err != nil {
return nil, err
}
}
ip, err := cmd.Flags().GetString("ip")
if err != nil {
return nil, err
}
if ip != "" {
staticIP := net.ParseIP(ip)
if staticIP == nil {
return nil, errors.Errorf("%s is not an ip address", ip)
}
if staticIP.To4() == nil {
return nil, errors.Wrapf(define.ErrInvalidArg, "%s is not an IPv4 address", ip)
}
opts.StaticIP = &staticIP
}
opts.NoHosts, err = cmd.Flags().GetBool("no-hosts")
if cmd.Flags().Changed("network") {
network, err := cmd.Flags().GetString("network")
if err != nil {
return nil, err
}
parts := strings.SplitN(network, ":", 2)
ns, cniNets, err := specgen.ParseNetworkNamespace(network)
if err != nil {
return nil, err
}
if len(parts) > 1 {
opts.NetworkOptions = make(map[string][]string)
opts.NetworkOptions[parts[0]] = strings.Split(parts[1], ",")
cniNets = nil
}
opts.Network = ns
opts.CNINetworks = cniNets
}
return &opts, err
}
|
