func snapRunApp(snapApp, command string, args []string) error {
snapName, appName := snap.SplitSnapApp(snapApp)
info, err := getSnapInfo(snapName, snap.R(0))
if err != nil {
return err
}
app := info.Apps[appName]
if app == nil {
return fmt.Errorf(i18n.G("cannot find app %q in %q"), appName, snapName)
}
return runSnapConfine(info, app.SecurityTag(), snapApp, command, "", args)
}
func (s *infoSuite) TestSplitSnapApp(c *C) {
for _, t := range []struct {
in string
out []string
}{
// normal cases
{"foo.bar", []string{"foo", "bar"}},
{"foo.bar.baz", []string{"foo", "bar.baz"}},
// special case, snapName == appName
{"foo", []string{"foo", "foo"}},
} {
snap, app := snap.SplitSnapApp(t.in)
c.Check([]string{snap, app}, DeepEquals, t.out)
}
}
func snapExecApp(snapApp, revision, command string, args []string) error {
rev, err := snap.ParseRevision(revision)
if err != nil {
return fmt.Errorf("cannot parse revision %q: %s", revision, err)
}
snapName, appName := snap.SplitSnapApp(snapApp)
info, err := snap.ReadInfo(snapName, &snap.SideInfo{
Revision: rev,
})
if err != nil {
return fmt.Errorf("cannot read info for %q: %s", snapName, err)
}
app := info.Apps[appName]
if app == nil {
return fmt.Errorf("cannot find app %q in %q", appName, snapName)
}
cmdAndArgs, err := findCommand(app, command)
if err != nil {
return err
}
// strings.Split() is ok here because we validate all app fields
// and the whitelist is pretty strict (see
// snap/validate.go:appContentWhitelist)
cmdArgv := strings.Split(cmdAndArgs, " ")
cmd := cmdArgv[0]
cmdArgs := cmdArgv[1:]
// build the environment from the yaml
env := append(os.Environ(), app.Env()...)
// run the command
fullCmd := filepath.Join(app.Snap.MountDir(), cmd)
if command == "shell" {
fullCmd = "/bin/bash"
cmdArgs = nil
}
fullCmdArgs := []string{fullCmd}
fullCmdArgs = append(fullCmdArgs, cmdArgs...)
fullCmdArgs = append(fullCmdArgs, args...)
if err := syscallExec(fullCmd, fullCmdArgs, env); err != nil {
return fmt.Errorf("cannot exec %q: %s", fullCmd, err)
}
// this is never reached except in tests
return nil
}
func ExampleSpltiSnapAppShort() {
fmt.Println(snap.SplitSnapApp("hello-world"))
// Output: hello-world hello-world
}
func ExampleSpltiSnapApp() {
fmt.Println(snap.SplitSnapApp("hello-world.env"))
// Output: hello-world env
}