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|
package common
import (
"net"
"strings"
"github.com/containers/libpod/v2/cmd/podman/parse"
"github.com/containers/libpod/v2/libpod/define"
"github.com/containers/libpod/v2/pkg/domain/entities"
"github.com/containers/libpod/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
}
|
