package Plugins

import (
	"fmt"
	"github.com/shadow1ng/fscan/Common"
	"net"
	"strings"
	"sync"
	"time"
)

// ActiveMQScan 执行 ActiveMQ 服务扫描
func ActiveMQScan(info *Common.HostInfo) (tmperr error) {
	if Common.DisableBrute {
		return
	}

	maxRetries := Common.MaxRetries
	threads := Common.BruteThreads

	// 首先测试默认账户
	for retryCount := 0; retryCount < maxRetries; retryCount++ {
		flag, err := ActiveMQConn(info, "admin", "admin")
		if flag {
			return nil
		}
		if err != nil {
			if retryErr := Common.CheckErrs(err); retryErr != nil {
				if retryCount == maxRetries-1 {
					return err
				}
				continue
			}
		}
		break
	}

	// 创建任务通道
	taskChan := make(chan struct {
		user string
		pass string
	}, len(Common.Userdict["activemq"])*len(Common.Passwords))

	resultChan := make(chan error, threads)

	// 生成所有用户名密码组合任务
	for _, user := range Common.Userdict["activemq"] {
		for _, pass := range Common.Passwords {
			pass = strings.Replace(pass, "{user}", user, -1)
			taskChan <- struct {
				user string
				pass string
			}{user, pass}
		}
	}
	close(taskChan)

	// 启动工作线程
	var wg sync.WaitGroup
	for i := 0; i < threads; i++ {
		wg.Add(1)
		go func() {
			defer wg.Done()
			starttime := time.Now().Unix()

			for task := range taskChan {
				// 重试循环
				for retryCount := 0; retryCount < maxRetries; retryCount++ {
					// 检查是否超时
					if time.Now().Unix()-starttime > int64(Common.Timeout) {
						resultChan <- fmt.Errorf("扫描超时")
						return
					}

					// 执行连接测试
					done := make(chan struct {
						success bool
						err     error
					})

					go func(user, pass string) {
						flag, err := ActiveMQConn(info, user, pass)
						done <- struct {
							success bool
							err     error
						}{flag, err}
					}(task.user, task.pass)

					// 等待结果或超时
					var err error
					select {
					case result := <-done:
						err = result.err
						if result.success {
							resultChan <- nil
							return
						}
					case <-time.After(time.Duration(Common.Timeout) * time.Second):
						err = fmt.Errorf("连接超时")
					}

					if err != nil {
						errlog := fmt.Sprintf("[-] ActiveMQ服务 %v:%v 尝试失败 用户名: %v 密码: %v 错误: %v",
							info.Host, info.Ports, task.user, task.pass, err)
						Common.LogError(errlog)

						if retryErr := Common.CheckErrs(err); retryErr != nil {
							if retryCount == maxRetries-1 {
								resultChan <- err
								return
							}
							continue
						}
					}

					break
				}
			}
			resultChan <- nil
		}()
	}

	// 等待所有线程完成
	go func() {
		wg.Wait()
		close(resultChan)
	}()

	// 检查结果
	for err := range resultChan {
		if err != nil {
			tmperr = err
			if retryErr := Common.CheckErrs(err); retryErr != nil {
				return err
			}
		}
	}

	return tmperr
}

// ActiveMQConn 统一的连接测试函数
func ActiveMQConn(info *Common.HostInfo, user string, pass string) (bool, error) {
	timeout := time.Duration(Common.Timeout) * time.Second
	addr := fmt.Sprintf("%s:%s", info.Host, info.Ports)

	conn, err := net.DialTimeout("tcp", addr, timeout)
	if err != nil {
		return false, err
	}
	defer conn.Close()

	// STOMP协议的CONNECT命令
	stompConnect := fmt.Sprintf("CONNECT\naccept-version:1.0,1.1,1.2\nhost:/\nlogin:%s\npasscode:%s\n\n\x00", user, pass)

	// 发送认证请求
	conn.SetWriteDeadline(time.Now().Add(timeout))
	if _, err := conn.Write([]byte(stompConnect)); err != nil {
		return false, err
	}

	// 读取响应
	conn.SetReadDeadline(time.Now().Add(timeout))
	respBuf := make([]byte, 1024)
	n, err := conn.Read(respBuf)
	if err != nil {
		return false, err
	}

	// 检查认证结果
	response := string(respBuf[:n])

	if strings.Contains(response, "CONNECTED") {
		result := fmt.Sprintf("[+] ActiveMQ服务 %v:%v 爆破成功 用户名: %v 密码: %v",
			info.Host, info.Ports, user, pass)
		Common.LogSuccess(result)
		return true, nil
	}

	if strings.Contains(response, "Authentication failed") ||
		strings.Contains(response, "ERROR") {
		return false, fmt.Errorf("认证失败")
	}

	return false, fmt.Errorf("未知响应: %s", response)
}