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
+199
-76
@@ -1,115 +1,205 @@
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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/lib/pq"
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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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// PostgresCredential 表示一个PostgreSQL凭据
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type PostgresCredential struct {
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Username string
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Password string
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}
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// PostgresScanResult 表示PostgreSQL扫描结果
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type PostgresScanResult struct {
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Success bool
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Error error
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Credential PostgresCredential
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}
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// PostgresScan 执行PostgreSQL服务扫描
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func PostgresScan(info *Common.HostInfo) (tmperr error) {
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func PostgresScan(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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target := fmt.Sprintf("%v:%v", info.Host, info.Ports)
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maxRetries := Common.MaxRetries
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Common.LogDebug(fmt.Sprintf("开始扫描 %s", target))
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totalUsers := len(Common.Userdict["postgresql"])
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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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// 构建凭据列表
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var credentials []PostgresCredential
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for _, user := range Common.Userdict["postgresql"] {
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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, PostgresCredential{
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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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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["postgresql"]), len(Common.Passwords), len(credentials)))
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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 := concurrentPostgresScan(ctx, info, credentials, Common.Timeout+10, Common.MaxRetries)
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if result != nil {
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// 记录成功结果
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savePostgresResult(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 := PostgresConn(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("PostgreSQL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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var err error
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// concurrentPostgresScan 并发扫描PostgreSQL服务
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func concurrentPostgresScan(ctx context.Context, info *Common.HostInfo, credentials []PostgresCredential, timeoutSeconds int64, maxRetries int) *PostgresScanResult {
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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 *PostgresScanResult, 1)
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workChan := make(chan PostgresCredential, 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("PostgreSQL服务 %s 成功爆破 用户名: %v 密码: %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": "postgresql",
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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 := tryPostgresCredential(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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errMsg := fmt.Sprintf("PostgreSQL服务 %s 尝试失败 用户名: %v 密码: %v 错误: %v", target, user, pass, err)
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Common.LogError(errMsg)
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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("PostgreSQL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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// tryPostgresCredential 尝试单个PostgreSQL凭据
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func tryPostgresCredential(ctx context.Context, info *Common.HostInfo, credential PostgresCredential, timeoutSeconds int64, maxRetries int) *PostgresScanResult {
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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 &PostgresScanResult{
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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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// 创建单个连接超时的上下文
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connCtx, cancel := context.WithTimeout(ctx, time.Duration(timeoutSeconds)*time.Second)
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success, err := PostgresConn(connCtx, info, credential.Username, credential.Password)
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cancel()
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if success {
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return &PostgresScanResult{
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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 &PostgresScanResult{
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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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// PostgresConn 尝试PostgreSQL连接
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func PostgresConn(info *Common.HostInfo, user string, pass string) (bool, error) {
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timeout := time.Duration(Common.Timeout) * time.Second
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func PostgresConn(ctx context.Context, info *Common.HostInfo, user string, pass string) (bool, error) {
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// 构造连接字符串
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connStr := fmt.Sprintf(
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"postgres://%v:%v@%v:%v/postgres?sslmode=disable",
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user, pass, info.Host, info.Ports,
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"postgres://%v:%v@%v:%v/postgres?sslmode=disable&connect_timeout=%d",
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user, pass, info.Host, info.Ports, Common.Timeout/1000, // 转换为秒
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)
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// 建立数据库连接
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@@ -120,12 +210,45 @@ func PostgresConn(info *Common.HostInfo, user string, pass string) (bool, error)
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defer db.Close()
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// 设置连接参数
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db.SetConnMaxLifetime(timeout)
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db.SetConnMaxLifetime(time.Duration(Common.Timeout) * time.Millisecond)
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db.SetMaxOpenConns(1)
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db.SetMaxIdleConns(0)
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// 测试连接
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if err = db.Ping(); err != nil {
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// 使用上下文测试连接
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err = db.PingContext(ctx)
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if err != nil {
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return false, err
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}
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// 简单查询测试权限
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var version string
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err = db.QueryRowContext(ctx, "SELECT version()").Scan(&version)
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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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}
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// savePostgresResult 保存PostgreSQL扫描结果
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func savePostgresResult(info *Common.HostInfo, target string, credential PostgresCredential) {
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successMsg := fmt.Sprintf("PostgreSQL服务 %s 成功爆破 用户名: %v 密码: %v",
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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": "postgresql",
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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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