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package registry
import (
"fmt"
"os"
"path/filepath"
"runtime"
"strings"
"github.com/containers/common/pkg/config"
"github.com/containers/libpod/pkg/domain/entities"
"github.com/containers/libpod/pkg/rootless"
"github.com/containers/libpod/pkg/util"
"github.com/pkg/errors"
)
const (
ParentNSRequired = "ParentNSRequired"
)
var (
PodmanOptions entities.PodmanConfig
)
// NewPodmanConfig creates a PodmanConfig from the environment
func NewPodmanConfig() entities.PodmanConfig {
if err := setXdgDirs(); err != nil {
fmt.Fprintf(os.Stderr, err.Error())
os.Exit(1)
}
var mode entities.EngineMode
switch runtime.GOOS {
case "darwin":
fallthrough
case "windows":
mode = entities.TunnelMode
case "linux":
mode = entities.ABIMode
default:
fmt.Fprintf(os.Stderr, "%s is not a supported OS", runtime.GOOS)
os.Exit(1)
}
// cobra.Execute() may not be called yet, so we peek at os.Args.
for _, v := range os.Args {
// Prefix checking works because of how default EngineMode's
// have been defined.
if strings.HasPrefix(v, "--remote") {
mode = entities.TunnelMode
}
}
// FIXME: for rootless, add flag to get the path to override configuration
cfg, err := config.NewConfig("")
if err != nil {
fmt.Fprint(os.Stderr, "Failed to obtain podman configuration: "+err.Error())
os.Exit(1)
}
cfg.Network.NetworkConfigDir = cfg.Network.CNIPluginDirs[0]
if rootless.IsRootless() {
cfg.Network.NetworkConfigDir = ""
}
return entities.PodmanConfig{Config: cfg, EngineMode: mode}
}
// SetXdgDirs ensures the XDG_RUNTIME_DIR env and XDG_CONFIG_HOME variables are set.
// containers/image uses XDG_RUNTIME_DIR to locate the auth file, XDG_CONFIG_HOME is
// use for the libpod.conf configuration file.
func setXdgDirs() error {
if !rootless.IsRootless() {
return nil
}
// Setup XDG_RUNTIME_DIR
if _, found := os.LookupEnv("XDG_RUNTIME_DIR"); !found {
dir, err := util.GetRuntimeDir()
if err != nil {
return err
}
if err := os.Setenv("XDG_RUNTIME_DIR", dir); err != nil {
return errors.Wrapf(err, "cannot set XDG_RUNTIME_DIR="+dir)
}
}
if _, found := os.LookupEnv("DBUS_SESSION_BUS_ADDRESS"); !found {
sessionAddr := filepath.Join(os.Getenv("XDG_RUNTIME_DIR"), "bus")
if _, err := os.Stat(sessionAddr); err == nil {
os.Setenv("DBUS_SESSION_BUS_ADDRESS", "unix:path="+sessionAddr)
}
}
// Setup XDG_CONFIG_HOME
if _, found := os.LookupEnv("XDG_CONFIG_HOME"); !found {
cfgHomeDir, err := util.GetRootlessConfigHomeDir()
if err != nil {
return err
}
if err := os.Setenv("XDG_CONFIG_HOME", cfgHomeDir); err != nil {
return errors.Wrapf(err, "cannot set XDG_CONFIG_HOME="+cfgHomeDir)
}
}
return nil
}
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