package main import ( "fmt" "strconv" "strings" "github.com/containers/libpod/cmd/podman/cliconfig" "github.com/containers/libpod/cmd/podman/libpodruntime" "github.com/containers/libpod/libpod" "github.com/pkg/errors" "github.com/spf13/cobra" ) var ( portCommand cliconfig.PortValues portDescription = ` podman port List port mappings for the CONTAINER, or lookup the public-facing port that is NAT-ed to the PRIVATE_PORT ` _portCommand = &cobra.Command{ Use: "port", Short: "List port mappings or a specific mapping for the container", Long: portDescription, RunE: func(cmd *cobra.Command, args []string) error { portCommand.InputArgs = args portCommand.GlobalFlags = MainGlobalOpts return portCmd(&portCommand) }, Example: "CONTAINER-NAME [mapping]", } ) func init() { portCommand.Command = _portCommand portCommand.SetUsageTemplate(UsageTemplate()) flags := portCommand.Flags() flags.BoolVarP(&portCommand.All, "all", "a", false, "Display port information for all containers") flags.BoolVarP(&portCommand.Latest, "latest", "l", false, "Act on the latest container podman is aware of") } func portCmd(c *cliconfig.PortValues) error { var ( userProto, containerName string userPort int container *libpod.Container containers []*libpod.Container ) args := c.InputArgs if c.Latest && c.All { return errors.Errorf("the 'all' and 'latest' options cannot be used together") } if c.All && len(args) > 0 { return errors.Errorf("no additional arguments can be used with 'all'") } if len(args) == 0 && !c.Latest && !c.All { return errors.Errorf("you must supply a running container name or id") } if !c.Latest && !c.All { containerName = args[0] } port := "" if len(args) > 1 && !c.Latest { port = args[1] } if len(args) == 1 && c.Latest { port = args[0] } if port != "" { fields := strings.Split(port, "/") // User supplied at least port var err error // User supplied port and protocol if len(fields) == 2 { userProto = fields[1] } if len(fields) >= 1 { p := fields[0] userPort, err = strconv.Atoi(p) if err != nil { return errors.Wrapf(err, "unable to format port") } } // Format is incorrect if len(fields) > 2 || len(fields) < 1 { return errors.Errorf("port formats are port/protocol. '%s' is invalid", port) } } runtime, err := libpodruntime.GetRuntime(&c.PodmanCommand) if err != nil { return errors.Wrapf(err, "could not get runtime") } defer runtime.Shutdown(false) if !c.Latest && !c.All { container, err = runtime.LookupContainer(containerName) if err != nil { return errors.Wrapf(err, "unable to find container %s", containerName) } containers = append(containers, container) } else if c.Latest { container, err = runtime.GetLatestContainer() if err != nil { return errors.Wrapf(err, "unable to get last created container") } containers = append(containers, container) } else { containers, err = runtime.GetRunningContainers() if err != nil { return errors.Wrapf(err, "unable to get all containers") } } for _, con := range containers { if state, _ := con.State(); state != libpod.ContainerStateRunning { continue } if c.All { fmt.Println(con.ID()) } // Iterate mappings for _, v := range con.Config().PortMappings { hostIP := v.HostIP // Set host IP to 0.0.0.0 if blank if hostIP == "" { hostIP = "0.0.0.0" } // If not searching by port or port/proto, then dump what we see if port == "" { fmt.Printf("%d/%s -> %s:%d\n", v.ContainerPort, v.Protocol, hostIP, v.HostPort) continue } // We have a match on ports if v.ContainerPort == int32(userPort) { if userProto == "" || userProto == v.Protocol { fmt.Printf("%s:%d\n", hostIP, v.HostPort) break } } else { return errors.Errorf("No public port '%d' published for %s", userPort, containerName) } } } return nil }