150 lines
3.7 KiB
Go
150 lines
3.7 KiB
Go
// +build linux,!remote
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package system
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import (
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"net/url"
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"os"
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"path/filepath"
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"syscall"
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"time"
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"github.com/containers/libpod/cmd/podman/registry"
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"github.com/containers/libpod/pkg/domain/entities"
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"github.com/containers/libpod/pkg/rootless"
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"github.com/containers/libpod/pkg/systemd"
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"github.com/containers/libpod/pkg/util"
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"github.com/sirupsen/logrus"
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"github.com/spf13/cobra"
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"github.com/spf13/pflag"
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)
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var (
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srvDescription = `Run an API service
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Enable a listening service for API access to Podman commands.
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`
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srvCmd = &cobra.Command{
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Use: "service [flags] [URI]",
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Args: cobra.MaximumNArgs(1),
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Short: "Run API service",
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Long: srvDescription,
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RunE: service,
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Example: `podman system service --time=0 unix:///tmp/podman.sock`,
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}
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srvArgs = struct {
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Timeout int64
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Varlink bool
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}{}
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)
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func init() {
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registry.Commands = append(registry.Commands, registry.CliCommand{
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Mode: []entities.EngineMode{entities.ABIMode},
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Command: srvCmd,
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Parent: systemCmd,
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})
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flags := srvCmd.Flags()
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flags.Int64VarP(&srvArgs.Timeout, "time", "t", 5, "Time until the service session expires in seconds. Use 0 to disable the timeout")
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flags.BoolVar(&srvArgs.Varlink, "varlink", false, "Use legacy varlink service instead of REST")
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_ = flags.MarkDeprecated("varlink", "valink API is deprecated.")
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flags.SetNormalizeFunc(aliasTimeoutFlag)
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}
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func aliasTimeoutFlag(_ *pflag.FlagSet, name string) pflag.NormalizedName {
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if name == "timeout" {
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name = "time"
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}
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return pflag.NormalizedName(name)
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}
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func service(cmd *cobra.Command, args []string) error {
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apiURI, err := resolveAPIURI(args)
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if err != nil {
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return err
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}
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logrus.Infof("using API endpoint: '%s'", apiURI)
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// Clean up any old existing unix domain socket
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if len(apiURI) > 0 {
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uri, err := url.Parse(apiURI)
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if err != nil {
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return err
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}
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// socket activation uses a unix:// socket in the shipped unit files but apiURI is coded as "" at this layer.
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if "unix" == uri.Scheme && !registry.IsRemote() {
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if err := syscall.Unlink(uri.Path); err != nil && !os.IsNotExist(err) {
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return err
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}
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mask := syscall.Umask(0177)
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defer syscall.Umask(mask)
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}
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}
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opts := entities.ServiceOptions{
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URI: apiURI,
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Timeout: time.Duration(srvArgs.Timeout) * time.Second,
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Command: cmd,
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}
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if srvArgs.Varlink {
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return registry.ContainerEngine().VarlinkService(registry.GetContext(), opts)
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}
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return restService(opts, cmd.Flags(), registry.PodmanConfig())
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}
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func resolveAPIURI(_url []string) (string, error) {
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// When determining _*THE*_ listening endpoint --
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// 1) User input wins always
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// 2) systemd socket activation
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// 3) rootless honors XDG_RUNTIME_DIR
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// 4) if varlink -- adapter.DefaultVarlinkAddress
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// 5) lastly adapter.DefaultAPIAddress
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if len(_url) == 0 {
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if v, found := os.LookupEnv("PODMAN_SOCKET"); found {
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logrus.Debugf("PODMAN_SOCKET='%s' used to determine API endpoint", v)
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_url = []string{v}
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}
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}
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switch {
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case len(_url) > 0 && _url[0] != "":
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return _url[0], nil
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case systemd.SocketActivated():
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logrus.Info("using systemd socket activation to determine API endpoint")
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return "", nil
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case rootless.IsRootless():
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xdg, err := util.GetRuntimeDir()
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if err != nil {
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return "", err
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}
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socketName := "podman.sock"
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if srvArgs.Varlink {
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socketName = "io.podman"
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}
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socketDir := filepath.Join(xdg, "podman", socketName)
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if _, err := os.Stat(filepath.Dir(socketDir)); err != nil {
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if os.IsNotExist(err) {
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if err := os.Mkdir(filepath.Dir(socketDir), 0755); err != nil {
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return "", err
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}
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} else {
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return "", err
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}
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}
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return "unix:" + socketDir, nil
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case srvArgs.Varlink:
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return registry.DefaultVarlinkAddress, nil
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default:
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return registry.DefaultRootAPIAddress, nil
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}
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}
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