command_exec.go

//go:build !windows

// Copyright 2025 CFC4N <cfc4n.cs@gmail.com>. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Repository: https://github.com/gojue/moling

package services

import (
	"context"
	"errors"
	"os/exec"
	"time"
)

// executeCommand executes a command and returns its output.
func (cs *CommandServer) executeCommand(command string) (string, error) {
	var cmd *exec.Cmd
	ctx, cfunc := context.WithTimeout(context.Background(), time.Second*3)
	defer cfunc()
	cmd = exec.CommandContext(ctx, "sh", "-c", command)
	output, err := cmd.CombinedOutput()
	if err != nil {
		switch {
		case errors.Is(err, exec.ErrNotFound):
			// 命令未找到
			return "", errors.New("command not found")
		case errors.Is(ctx.Err(), context.DeadlineExceeded):
			// 超时时仅返回输出，不返回错误
			return string(output), nil
		default:
			return string(output), nil
		}
	}

	return string(output), nil
}