mirror of
https://gitee.com/dromara/mayfly-go
synced 2026-05-19 01:15:40 +08:00
354 lines
9.1 KiB
Go
354 lines
9.1 KiB
Go
package machinetool
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import (
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"context"
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"fmt"
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"mayfly-go/internal/ai/imsg"
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"mayfly-go/internal/ai/tools"
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"mayfly-go/internal/machine/application"
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"mayfly-go/pkg/i18n"
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"strings"
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"github.com/cloudwego/eino/components/tool"
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"github.com/cloudwego/eino/components/tool/utils"
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)
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// CommandExecParam 命令执行参数
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type CommandExecParam struct {
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AuthCertName string `json:"authCertName" jsonschema_description:"授权凭证名称"`
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Command string `json:"command" jsonschema_description:"要执行的命令"`
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Remark string `json:"remark" jsonschema_description:"命令作用说明，简要描述该命令的用途或目的"`
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}
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// CommandExecOutput 命令执行输出
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type CommandExecOutput struct {
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AuthCertName string `json:"authCertName" jsonschema_description:"授权凭证名称"`
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MachineId uint64 `json:"machineId" jsonschema_description:"机器ID"`
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MachineName string `json:"machineName" jsonschema_description:"机器名称"`
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MachineIp string `json:"machineIp" jsonschema_description:"机器IP地址"`
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MachinePort int `json:"machinePort" jsonschema_description:"机器端口"`
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Username string `json:"username" jsonschema_description:"连接用户名"`
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Output string `json:"output" jsonschema_description:"命令执行输出"`
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Success bool `json:"success" jsonschema_description:"是否执行成功"`
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}
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// GetCommandExec 获取命令执行工具
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func GetCommandExec() (tool.InvokableTool, error) {
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return utils.InferTool("MachineCommandExec",
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i18n.T(imsg.MachineCommandExecToolInfo),
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func(ctx context.Context, param *CommandExecParam) (*CommandExecOutput, error) {
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toolDesc := i18n.TC(ctx, imsg.MachineCommandExecToolDesc)
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// 检查必要参数，触发参数完善
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if param.AuthCertName == "" {
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if err := tools.InterruptOrResumeParamCompletion(ctx, toolDesc, param, i18n.TC(ctx, imsg.MachineInfoIncomplete), "machine", []tools.CompletionParamInfo{
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{Param: "authCertName", Name: "授权凭证名称"},
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}); err != nil {
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return nil, err
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}
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}
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// 检查命令是否为空
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if param.Command == "" {
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return nil, tools.NewToolError(fmt.Errorf("%s", i18n.TC(ctx, imsg.MissingRequiredParams)), tools.RecoverRetry)
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}
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// 危险命令检测
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if isDangerousCommand(param.Command) {
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// 触发审批中断
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if err := tools.InterruptOrResumeApproval(ctx, toolDesc, param, i18n.TC(ctx, imsg.CommandExecApprovalReason)); err != nil {
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return nil, err
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}
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}
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// 获取机器客户端
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cli, err := application.GetMachineApp().GetCliByAc(ctx, param.AuthCertName)
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if err != nil {
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return nil, tools.NewToolError(err, tools.RecoverRetry)
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}
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// 执行命令
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output, err := cli.Run(param.Command)
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success := err == nil
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// 从 CLI 中获取机器信息
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machineInfo := cli.Info
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// 即使执行失败也返回输出，让AI能看到错误信息
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return &CommandExecOutput{
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AuthCertName: param.AuthCertName,
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MachineId: machineInfo.Id,
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MachineName: machineInfo.Name,
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MachineIp: machineInfo.Ip,
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MachinePort: machineInfo.Port,
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Username: machineInfo.Username,
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Output: output,
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Success: success,
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}, nil
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},
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)
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}
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// isDangerousCommand 判断命令是否包含危险操作
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// 使用词法分析遍历所有命令，检测危险命令模式
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func isDangerousCommand(cmd string) bool {
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if cmd == "" {
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return false
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}
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// 定义危险命令规则
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type dangerousRule struct {
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command string // 命令名
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pattern string // 危险参数模式（空表示命令本身就危险）
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}
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dangerousRules := []dangerousRule{
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{command: "rm", pattern: ""}, // rm 删除
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{command: "mkfs", pattern: ""}, // 所有格式化命令
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{command: "mkfs.ext2", pattern: ""},
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{command: "mkfs.ext3", pattern: ""},
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{command: "mkfs.ext4", pattern: ""},
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{command: "mkfs.xfs", pattern: ""},
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{command: "mkfs.vfat", pattern: ""},
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{command: "dd", pattern: "if="}, // dd if= 磁盘写入
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{command: "dd", pattern: "of=/dev/"}, // dd of=/dev/ 写入设备
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{command: "shutdown", pattern: ""}, // 关机命令
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{command: "reboot", pattern: ""}, // 重启命令
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{command: "halt", pattern: ""}, // 停机命令
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{command: "poweroff", pattern: ""}, // 断电命令
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{command: "fdisk", pattern: ""}, // 分区操作
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{command: "parted", pattern: ""}, // 分区工具
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{command: "debugfs", pattern: ""}, // 文件系统调试
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{command: "ddrescue", pattern: ""}, // 磁盘救援
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}
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// 词法分析命令
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tokens := tokenize(cmd)
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// 遍历 tokens，查找命令及其参数
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for i := 0; i < len(tokens); i++ {
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token := tokens[i]
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// 跳过操作符和引号内容
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if isOperator(token) || isQuotedString(token) {
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continue
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}
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// 提取命令名（去除路径）
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cmdName := token
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if idx := strings.LastIndex(token, "/"); idx >= 0 {
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cmdName = token[idx+1:]
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}
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// 检查是否匹配危险命令
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for _, rule := range dangerousRules {
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if cmdName != rule.command {
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continue
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}
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// 如果规则没有 pattern，命令本身就危险
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if rule.pattern == "" {
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return true
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}
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// 检查后续参数是否包含危险模式
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if checkArgsContainPattern(tokens[i+1:], rule.pattern) {
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return true
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}
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}
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// 特殊处理：chmod 777 /
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if cmdName == "chmod" && checkChmod777Root(tokens[i+1:]) {
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return true
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}
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// 特殊处理：重定向到危险设备
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if checkRedirectToDevice(tokens[i:]) {
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return true
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}
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}
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return false
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}
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// tokenize 将命令字符串分割成 tokens
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func tokenize(cmd string) []string {
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var tokens []string
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var current strings.Builder
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inSingleQuote := false
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inDoubleQuote := false
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escaped := false
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for i := 0; i < len(cmd); i++ {
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ch := cmd[i]
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if escaped {
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current.WriteByte(ch)
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escaped = false
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continue
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}
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if ch == '\\' && !inSingleQuote {
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current.WriteByte(ch)
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escaped = true
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continue
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}
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if ch == '\'' && !inDoubleQuote {
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inSingleQuote = !inSingleQuote
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current.WriteByte(ch)
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continue
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}
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if ch == '"' && !inSingleQuote {
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inDoubleQuote = !inDoubleQuote
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current.WriteByte(ch)
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continue
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}
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if inSingleQuote || inDoubleQuote {
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current.WriteByte(ch)
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continue
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}
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if isOperatorChar(ch) {
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if current.Len() > 0 {
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tokens = append(tokens, current.String())
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current.Reset()
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}
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operator := string(ch)
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if i+1 < len(cmd) && isOperatorChar(cmd[i+1]) {
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nextCh := cmd[i+1]
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if ch == nextCh {
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operator += string(nextCh)
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i++
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}
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}
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tokens = append(tokens, operator)
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continue
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}
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if ch == ' ' || ch == '\t' {
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if current.Len() > 0 {
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tokens = append(tokens, current.String())
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current.Reset()
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}
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continue
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}
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current.WriteByte(ch)
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}
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if current.Len() > 0 {
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tokens = append(tokens, current.String())
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}
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return tokens
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}
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// isOperatorChar 判断字符是否为操作符字符
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func isOperatorChar(ch byte) bool {
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return ch == '|' || ch == '&' || ch == ';' || ch == '>' || ch == '<'
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}
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// isOperator 判断 token 是否为操作符
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func isOperator(token string) bool {
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if len(token) == 0 {
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return false
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}
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return isOperatorChar(token[0])
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}
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// checkArgsContainPattern 检查参数列表是否包含指定模式
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func checkArgsContainPattern(args []string, pattern string) bool {
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for _, arg := range args {
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// 遇到操作符就停止
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if isOperator(arg) {
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break
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}
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// 检查参数
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if strings.Contains(arg, pattern) {
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return true
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}
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// 处理组合选项，如 -rf 拆分为 -r -f
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if strings.HasPrefix(arg, "-") && len(arg) > 2 {
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opts := arg[1:]
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// 检查是否包含 pattern 中的字符（如 -rf 包含 r 和 f）
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if pattern[0] == '-' {
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patternChars := pattern[1:]
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hasAll := true
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for _, pc := range patternChars {
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if !strings.ContainsRune(opts, pc) {
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hasAll = false
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break
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}
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}
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if hasAll {
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return true
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}
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}
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}
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}
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return false
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}
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// checkChmod777Root 检查是否为 chmod 777 /
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func checkChmod777Root(args []string) bool {
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for i, arg := range args {
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if isOperator(arg) {
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break
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}
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// 跳过选项
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if strings.HasPrefix(arg, "-") {
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continue
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}
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// 检查权限模式
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if arg == "777" || arg == "0777" {
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// 检查目标是否为根目录
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if i+1 < len(args) {
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target := args[i+1]
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if !isOperator(target) && (target == "/" || target == "/*") {
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return true
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}
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}
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}
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}
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return false
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}
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// checkRedirectToDevice 检查是否重定向到危险设备
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func checkRedirectToDevice(tokens []string) bool {
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for i, token := range tokens {
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// 检查重定向操作符
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if token == ">" || token == ">>" || token == "1>" || token == "2>" || token == "&>" {
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// 检查下一个 token 是否为危险设备
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if i+1 < len(tokens) {
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target := tokens[i+1]
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if strings.HasPrefix(target, "/dev/sd") ||
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strings.HasPrefix(target, "/dev/hd") ||
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strings.HasPrefix(target, "/dev/nvme") ||
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strings.HasPrefix(target, "/dev/vd") {
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return true
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}
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}
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}
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}
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return false
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}
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// isQuotedString 判断是否为引号字符串
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func isQuotedString(token string) bool {
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if len(token) < 2 {
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return false
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}
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// 单引号或双引号包裹
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return (token[0] == '\'' && token[len(token)-1] == '\'') ||
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(token[0] == '"' && token[len(token)-1] == '"')
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}
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