mirror of
https://github.com/shadow1ng/fscan.git
synced 2026-09-22 03:10:42 +08:00
fix: 大型修复，增加超时和线程控制
This commit is contained in:
ZacharyZcR
+209
-79
@@ -1,121 +1,208 @@
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package Plugins
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import (
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"context"
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"database/sql"
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"fmt"
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_ "github.com/denisenkom/go-mssqldb"
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"github.com/shadow1ng/fscan/Common"
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"strings"
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"sync"
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"time"
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)
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// MssqlCredential 表示一个MSSQL凭据
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type MssqlCredential struct {
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Username string
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Password string
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}
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// MssqlScanResult 表示MSSQL扫描结果
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type MssqlScanResult struct {
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Success bool
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Error error
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Credential MssqlCredential
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}
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// MssqlScan 执行MSSQL服务扫描
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func MssqlScan(info *Common.HostInfo) (tmperr error) {
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func MssqlScan(info *Common.HostInfo) error {
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if Common.DisableBrute {
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return
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return nil
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}
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maxRetries := Common.MaxRetries
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target := fmt.Sprintf("%v:%v", info.Host, info.Ports)
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Common.LogDebug(fmt.Sprintf("开始扫描 %s", target))
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totalUsers := len(Common.Userdict["mssql"])
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totalPass := len(Common.Passwords)
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Common.LogDebug(fmt.Sprintf("开始尝试用户名密码组合 (总用户数: %d, 总密码数: %d)", totalUsers, totalPass))
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tried := 0
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total := totalUsers * totalPass
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// 设置全局超时上下文
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ctx, cancel := context.WithTimeout(context.Background(), time.Duration(Common.GlobalTimeout)*time.Second)
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defer cancel()
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// 遍历所有用户名密码组合
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// 构建凭据列表
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var credentials []MssqlCredential
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for _, user := range Common.Userdict["mssql"] {
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for _, pass := range Common.Passwords {
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tried++
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pass = strings.Replace(pass, "{user}", user, -1)
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Common.LogDebug(fmt.Sprintf("[%d/%d] 尝试: %s:%s", tried, total, user, pass))
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actualPass := strings.Replace(pass, "{user}", user, -1)
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credentials = append(credentials, MssqlCredential{
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Username: user,
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Password: actualPass,
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})
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}
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}
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// 重试循环
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for retryCount := 0; retryCount < maxRetries; retryCount++ {
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if retryCount > 0 {
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Common.LogDebug(fmt.Sprintf("第%d次重试: %s:%s", retryCount+1, user, pass))
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}
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Common.LogDebug(fmt.Sprintf("开始尝试用户名密码组合 (总用户数: %d, 总密码数: %d, 总组合数: %d)",
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len(Common.Userdict["mssql"]), len(Common.Passwords), len(credentials)))
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// 执行MSSQL连接
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done := make(chan struct {
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success bool
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err error
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}, 1)
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// 使用工作池并发扫描
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result := concurrentMssqlScan(ctx, info, credentials, Common.Timeout, Common.MaxRetries)
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if result != nil {
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// 记录成功结果
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saveMssqlResult(info, target, result.Credential)
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return nil
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}
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go func(user, pass string) {
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success, err := MssqlConn(info, user, pass)
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select {
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case done <- struct {
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success bool
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err error
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}{success, err}:
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default:
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}
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}(user, pass)
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// 检查是否因为全局超时而退出
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select {
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case <-ctx.Done():
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Common.LogDebug("MSSQL扫描全局超时")
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return fmt.Errorf("全局超时")
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default:
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Common.LogDebug(fmt.Sprintf("扫描完成，共尝试 %d 个组合", len(credentials)))
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return nil
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}
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}
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// 等待结果或超时
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var err error
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// concurrentMssqlScan 并发扫描MSSQL服务
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func concurrentMssqlScan(ctx context.Context, info *Common.HostInfo, credentials []MssqlCredential, timeoutSeconds int64, maxRetries int) *MssqlScanResult {
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// 使用ModuleThreadNum控制并发数
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maxConcurrent := Common.ModuleThreadNum
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if maxConcurrent <= 0 {
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maxConcurrent = 10 // 默认值
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}
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if maxConcurrent > len(credentials) {
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maxConcurrent = len(credentials)
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}
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// 创建工作池
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var wg sync.WaitGroup
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resultChan := make(chan *MssqlScanResult, 1)
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workChan := make(chan MssqlCredential, maxConcurrent)
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scanCtx, scanCancel := context.WithCancel(ctx)
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defer scanCancel()
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// 启动工作协程
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for i := 0; i < maxConcurrent; i++ {
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wg.Add(1)
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go func() {
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defer wg.Done()
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for credential := range workChan {
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select {
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case result := <-done:
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err = result.err
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if result.success && err == nil {
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successMsg := fmt.Sprintf("MSSQL %s %v %v", target, user, pass)
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Common.LogSuccess(successMsg)
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// 保存结果
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vulnResult := &Common.ScanResult{
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Time: time.Now(),
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Type: Common.VULN,
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Target: info.Host,
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Status: "vulnerable",
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Details: map[string]interface{}{
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"port": info.Ports,
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"service": "mssql",
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"username": user,
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"password": pass,
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"type": "weak-password",
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},
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case <-scanCtx.Done():
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return
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default:
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result := tryMssqlCredential(scanCtx, info, credential, timeoutSeconds, maxRetries)
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if result.Success {
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select {
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case resultChan <- result:
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scanCancel() // 找到有效凭据，取消其他工作
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default:
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}
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Common.SaveResult(vulnResult)
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return nil
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}
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case <-time.After(time.Duration(Common.Timeout) * time.Second):
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err = fmt.Errorf("连接超时")
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}
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if err != nil {
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errlog := fmt.Sprintf("MSSQL %s %v %v %v", target, user, pass, err)
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Common.LogError(errlog)
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if retryErr := Common.CheckErrs(err); retryErr != nil {
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if retryCount == maxRetries-1 {
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continue
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}
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continue
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return
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}
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}
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}
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}()
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}
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// 发送工作
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go func() {
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for i, cred := range credentials {
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select {
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case <-scanCtx.Done():
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break
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default:
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Common.LogDebug(fmt.Sprintf("[%d/%d] 尝试: %s:%s", i+1, len(credentials), cred.Username, cred.Password))
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workChan <- cred
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}
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}
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close(workChan)
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}()
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// 等待结果或完成
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go func() {
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wg.Wait()
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close(resultChan)
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}()
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// 获取结果，考虑全局超时
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select {
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case result, ok := <-resultChan:
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if ok && result != nil && result.Success {
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return result
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}
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return nil
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case <-ctx.Done():
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Common.LogDebug("MSSQL并发扫描全局超时")
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scanCancel() // 确保取消所有未完成工作
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return nil
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}
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}
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// tryMssqlCredential 尝试单个MSSQL凭据
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func tryMssqlCredential(ctx context.Context, info *Common.HostInfo, credential MssqlCredential, timeoutSeconds int64, maxRetries int) *MssqlScanResult {
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var lastErr error
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for retry := 0; retry < maxRetries; retry++ {
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select {
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case <-ctx.Done():
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return &MssqlScanResult{
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Success: false,
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Error: fmt.Errorf("全局超时"),
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Credential: credential,
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}
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default:
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if retry > 0 {
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Common.LogDebug(fmt.Sprintf("第%d次重试: %s:%s", retry+1, credential.Username, credential.Password))
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time.Sleep(500 * time.Millisecond) // 重试前等待
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}
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// 创建连接超时的上下文
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connCtx, cancel := context.WithTimeout(ctx, time.Duration(timeoutSeconds)*time.Second)
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success, err := MssqlConn(connCtx, info, credential.Username, credential.Password)
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cancel()
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if success {
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return &MssqlScanResult{
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Success: true,
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Credential: credential,
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}
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}
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lastErr = err
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if err != nil {
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// 检查是否需要重试
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if retryErr := Common.CheckErrs(err); retryErr == nil {
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break // 不需要重试的错误
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}
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}
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}
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}
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Common.LogDebug(fmt.Sprintf("扫描完成，共尝试 %d 个组合", tried))
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return tmperr
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return &MssqlScanResult{
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Success: false,
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Error: lastErr,
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Credential: credential,
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}
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}
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// MssqlConn 尝试MSSQL连接
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func MssqlConn(info *Common.HostInfo, user string, pass string) (bool, error) {
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func MssqlConn(ctx context.Context, info *Common.HostInfo, user string, pass string) (bool, error) {
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host, port, username, password := info.Host, info.Ports, user, pass
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timeout := time.Duration(Common.Timeout) * time.Second
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// 构造连接字符串
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connStr := fmt.Sprintf(
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"server=%s;user id=%s;password=%s;port=%v;encrypt=disable;timeout=%v",
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host, username, password, port, timeout,
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"server=%s;user id=%s;password=%s;port=%v;encrypt=disable;",
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host, username, password, port,
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)
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// 建立数据库连接
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@@ -129,11 +216,54 @@ func MssqlConn(info *Common.HostInfo, user string, pass string) (bool, error) {
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db.SetConnMaxLifetime(timeout)
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db.SetConnMaxIdleTime(timeout)
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db.SetMaxIdleConns(0)
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db.SetMaxOpenConns(1)
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// 测试连接
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if err = db.Ping(); err != nil {
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return false, err
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// 通过上下文执行ping操作，以支持超时控制
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pingCtx, pingCancel := context.WithTimeout(ctx, timeout)
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defer pingCancel()
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errChan := make(chan error, 1)
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go func() {
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errChan <- db.PingContext(pingCtx)
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}()
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// 等待ping结果或者超时
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select {
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case err := <-errChan:
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if err != nil {
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return false, err
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}
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return true, nil
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case <-ctx.Done():
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// 全局超时或取消
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return false, ctx.Err()
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case <-pingCtx.Done():
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if pingCtx.Err() == context.DeadlineExceeded {
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// 单个连接超时
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return false, fmt.Errorf("连接超时")
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}
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return false, pingCtx.Err()
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}
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}
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return true, nil
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// saveMssqlResult 保存MSSQL扫描结果
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func saveMssqlResult(info *Common.HostInfo, target string, credential MssqlCredential) {
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successMsg := fmt.Sprintf("MSSQL %s %v %v", target, credential.Username, credential.Password)
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Common.LogSuccess(successMsg)
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// 保存结果
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vulnResult := &Common.ScanResult{
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Time: time.Now(),
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Type: Common.VULN,
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Target: info.Host,
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Status: "vulnerable",
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Details: map[string]interface{}{
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"port": info.Ports,
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"service": "mssql",
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"username": credential.Username,
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"password": credential.Password,
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"type": "weak-password",
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},
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}
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Common.SaveResult(vulnResult)
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}
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