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@@ -9,6 +9,8 @@ import (
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"os/exec"
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"strconv"
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"strings"
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"sync"
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"time"
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"cyberstrike-ai/internal/config"
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"cyberstrike-ai/internal/mcp"
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@@ -17,6 +19,15 @@ import (
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"go.uber.org/zap"
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)
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// ToolOutputCallback 用于在工具执行过程中把 stdout/stderr 增量推给上层(SSE)。
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// 通过 context 传递,避免修改 MCP ToolHandler 签名导致的“写死工具”问题。
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type ToolOutputCallback func(chunk string)
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type toolOutputCallbackCtxKey struct{}
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// ToolOutputCallbackCtxKey 是 context 中的 key,供 Agent 写入回调,Executor 读取并流式回调。
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var ToolOutputCallbackCtxKey = toolOutputCallbackCtxKey{}
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// Executor 安全工具执行器
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type Executor struct {
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config *config.SecurityConfig
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@@ -144,7 +155,16 @@ func (e *Executor) ExecuteTool(ctx context.Context, toolName string, args map[st
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zap.Strings("args", cmdArgs),
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)
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output, err := cmd.CombinedOutput()
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var output string
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var err error
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// 如果上层提供了 stdout/stderr 增量回调,则边执行边读取并回调。
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if cb, ok := ctx.Value(ToolOutputCallbackCtxKey).(ToolOutputCallback); ok && cb != nil {
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output, err = streamCommandOutput(cmd, cb)
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} else {
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outputBytes, err2 := cmd.CombinedOutput()
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output = string(outputBytes)
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err = err2
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}
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if err != nil {
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// 检查退出码是否在允许列表中
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exitCode := getExitCode(err)
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@@ -931,7 +951,16 @@ func (e *Executor) executeSystemCommand(ctx context.Context, args map[string]int
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}
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// 非后台命令:等待输出
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output, err := cmd.CombinedOutput()
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var output string
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var err error
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// 若上层提供工具输出增量回调,则边执行边流式读取。
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if cb, ok := ctx.Value(ToolOutputCallbackCtxKey).(ToolOutputCallback); ok && cb != nil {
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output, err = streamCommandOutput(cmd, cb)
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} else {
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outputBytes, err2 := cmd.CombinedOutput()
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output = string(outputBytes)
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err = err2
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}
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if err != nil {
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e.logger.Error("系统命令执行失败",
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zap.String("command", command),
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@@ -965,6 +994,78 @@ func (e *Executor) executeSystemCommand(ctx context.Context, args map[string]int
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}, nil
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}
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// streamCommandOutput 以“边读边回调”的方式读取命令 stdout/stderr。
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// 保持输出内容完整拼接返回,并用 cb(chunk) 向上层持续推送。
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func streamCommandOutput(cmd *exec.Cmd, cb ToolOutputCallback) (string, error) {
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stdoutPipe, err := cmd.StdoutPipe()
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if err != nil {
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return "", err
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}
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stderrPipe, err := cmd.StderrPipe()
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if err != nil {
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_ = stdoutPipe.Close()
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return "", err
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}
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if err := cmd.Start(); err != nil {
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_ = stdoutPipe.Close()
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_ = stderrPipe.Close()
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return "", err
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}
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chunks := make(chan string, 64)
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var wg sync.WaitGroup
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readFn := func(r io.Reader) {
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defer wg.Done()
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br := bufio.NewReader(r)
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for {
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s, readErr := br.ReadString('\n')
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if s != "" {
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chunks <- s
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}
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if readErr != nil {
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// EOF 正常结束
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return
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}
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}
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}
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wg.Add(2)
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go readFn(stdoutPipe)
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go readFn(stderrPipe)
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go func() {
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wg.Wait()
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close(chunks)
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}()
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var outBuilder strings.Builder
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var deltaBuilder strings.Builder
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lastFlush := time.Now()
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flush := func() {
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if deltaBuilder.Len() == 0 {
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return
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}
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cb(deltaBuilder.String())
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deltaBuilder.Reset()
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lastFlush = time.Now()
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}
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for chunk := range chunks {
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outBuilder.WriteString(chunk)
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deltaBuilder.WriteString(chunk)
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// 简单节流:buffer 大于 2KB 或 200ms 就刷新一次
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if deltaBuilder.Len() >= 2048 || time.Since(lastFlush) >= 200*time.Millisecond {
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flush()
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}
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}
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flush()
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// 等待命令结束,返回最终退出状态
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waitErr := cmd.Wait()
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return outBuilder.String(), waitErr
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}
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// executeInternalTool 执行内部工具(不执行外部命令)
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func (e *Executor) executeInternalTool(ctx context.Context, toolName string, command string, args map[string]interface{}) (*mcp.ToolResult, error) {
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// 提取内部工具类型(去掉 "internal:" 前缀)
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