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package main
import (
"fmt"
"os/exec"
"slices"
"strings"
)
// isReadOnlyCommand returns true if the CLI args indicate a command that is
// safe to run as root (e.g. shell completion, help).
func isReadOnlyCommand(args []string) bool {
for _, arg := range args[1:] {
if strings.HasPrefix(arg, "-") {
continue
}
switch arg {
case "completion", "help", "__complete":
return true
}
return false
}
return false
}
func isArchPackageInstalled(packageName string) bool {
cmd := exec.Command("pacman", "-Q", packageName)
err := cmd.Run()
return err == nil
}
type systemdServiceState struct {
Name string
EnabledState string
NeedsDisable bool
Exists bool
}
// checkSystemdServiceEnabled returns (state, should_disable, error) for a systemd service
func checkSystemdServiceEnabled(serviceName string) (string, bool, error) {
cmd := exec.Command("systemctl", "is-enabled", serviceName)
output, err := cmd.Output()
stateStr := strings.TrimSpace(string(output))
if err != nil {
knownStates := []string{"disabled", "masked", "masked-runtime", "not-found", "enabled", "enabled-runtime", "static", "indirect", "alias"}
isKnownState := slices.Contains(knownStates, stateStr)
if !isKnownState {
return stateStr, false, fmt.Errorf("systemctl is-enabled failed: %w (output: %s)", err, stateStr)
}
}
shouldDisable := false
switch stateStr {
case "enabled", "enabled-runtime", "static", "indirect", "alias":
shouldDisable = true
case "disabled", "masked", "masked-runtime", "not-found":
shouldDisable = false
default:
shouldDisable = true
}
return stateStr, shouldDisable, nil
}
func getSystemdServiceState(serviceName string) (*systemdServiceState, error) {
state := &systemdServiceState{
Name: serviceName,
Exists: false,
}
enabledState, needsDisable, err := checkSystemdServiceEnabled(serviceName)
if err != nil {
return nil, fmt.Errorf("failed to check enabled state: %w", err)
}
state.EnabledState = enabledState
state.NeedsDisable = needsDisable
if enabledState == "not-found" {
state.Exists = false
return state, nil
}
state.Exists = true
return state, nil
}
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