Ophestra
e59c4f424d
This tool creates fortify configuration for running an application bundle. The activate action wraps a home-manager activation package and ensures each generation gets activated once. Signed-off-by: Ophestra <cat@gensokyo.uk>
50 lines
1.2 KiB
Go
50 lines
1.2 KiB
Go
package main
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import (
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"errors"
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"os"
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"os/exec"
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"path"
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"git.gensokyo.uk/security/fortify/internal/fmsg"
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)
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func actionActivate(args []string) {
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home := os.Getenv("HOME")
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if !path.IsAbs(home) {
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fmsg.Fatalf("path %q is not aboslute", home)
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}
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marker := path.Join(home, ".hm-activation")
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if len(args) != 1 {
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fmsg.Fatalf("invalid argument")
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}
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activate := path.Join(args[0], "activate")
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var cmd *exec.Cmd
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if l, err := os.Readlink(marker); err != nil && !errors.Is(err, os.ErrNotExist) {
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fmsg.Fatalf("cannot read activation marker %q: %v", marker, err)
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} else if err != nil || l != activate {
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cmd = exec.Command(activate)
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}
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// marker present and equals to current activation package
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if cmd == nil {
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fmsg.Exit(0)
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panic("unreachable")
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}
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cmd.Stdin, cmd.Stdout, cmd.Stderr = os.Stdin, os.Stdout, os.Stderr
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cmd.Env = os.Environ()
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if err := cmd.Run(); err != nil {
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fmsg.Fatalf("cannot activate: %v", err)
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}
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if err := os.Remove(marker); err != nil && !errors.Is(err, os.ErrNotExist) {
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fmsg.Fatalf("cannot remove existing marker: %v", err)
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}
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if err := os.Symlink(activate, marker); err != nil {
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fmsg.Fatalf("cannot create activation marker: %v", err)
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}
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}
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