修改项目结构
This commit is contained in:
148
cmii-uav-watchdog-agent/cmd/watchdog-agent.go
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148
cmii-uav-watchdog-agent/cmd/watchdog-agent.go
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package cmd
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import (
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"cmii-uav-watchdog-agent/rpc"
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"cmii-uav-watchdog-agent/services"
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"cmii-uav-watchdog-agent/totp"
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"cmii-uav-watchdog-common/models"
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"fmt"
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"log"
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"os"
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"os/signal"
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"syscall"
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"time"
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)
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const (
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// 最大重试次数
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maxRetryCount = 5
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// 默认心跳检测间隔
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defaultHeartbeatInterval = 30 * time.Second
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// 检测失败后的等待间隔
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failWaitInterval = 5 * time.Second
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// 环境变量名称
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appNameEnv = "APP_NAME"
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)
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// 启动心跳检测
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func StartHeartbeatDetection() {
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log.Println("启动心跳检测任务...")
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// 创建RPC客户端
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client := rpc.NewClient(nil)
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// 监听终止信号
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signalChan := make(chan os.Signal, 1)
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signal.Notify(signalChan, os.Interrupt, syscall.SIGTERM)
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// 失败计数器
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failCount := 0
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// 心跳检测循环
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for {
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select {
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case <-signalChan:
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log.Println("收到终止信号,停止心跳检测")
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return
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default:
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// 尝试发送心跳请求
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authorized, err := sendHeartbeat(client)
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if err != nil {
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log.Printf("心跳检测失败: %v", err)
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failCount++
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} else if !authorized {
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log.Println("未获得授权")
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failCount++
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} else {
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// 检测成功,重置失败计数
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failCount = 0
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log.Println("心跳检测成功,已获得授权")
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}
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// 检查是否达到最大失败次数
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if failCount >= maxRetryCount {
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log.Printf("心跳检测连续失败 %d 次,发送终止信号", failCount)
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// 发送终止信号给start_up.go
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process, err := os.FindProcess(os.Getpid())
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if err == nil {
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process.Signal(syscall.SIGTERM)
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}
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return
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}
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// 等待下一次检测
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if err != nil || !authorized {
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// 失败后等待较短时间
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time.Sleep(failWaitInterval)
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} else {
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// 成功后等待正常间隔
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time.Sleep(defaultHeartbeatInterval)
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}
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}
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}
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}
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// 发送心跳请求
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func sendHeartbeat(client *rpc.Client) (bool, error) {
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// 1. 获取主机信息
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hostInfoData := services.GetAllInfo()
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hostInfo := models.HostInfo{
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CPUInfo: hostInfoData.CPUInfo,
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DiskInfo: hostInfoData.DiskInfo,
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MemoryInfo: hostInfoData.MemoryInfo,
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NetInfo: hostInfoData.NetInfo,
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MotherboardInfo: hostInfoData.MotherboardInfo,
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}
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// 2. 获取应用名称
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appName := os.Getenv(appNameEnv)
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if appName == "" {
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appName = "unknown-app"
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log.Printf("警告: 环境变量 %s 未设置,使用默认值: %s", appNameEnv, appName)
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}
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// 构建心跳请求
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request := &models.HeartbeatRequest{
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HostInfo: hostInfo,
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Timestamp: time.Now().Unix(),
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AppName: appName,
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}
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// 3. 如果已有TOTP密钥,则生成TOTP验证码
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totpSecret := totp.GetTOTPSecret()
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if totpSecret != "" {
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totpCode, err := totp.GenerateTOTPCode()
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if err != nil {
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log.Printf("生成TOTP验证码失败: %v", err)
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} else {
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request.TOTPCode = totpCode
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}
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}
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// 4. 发送心跳请求
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response, err := client.SendHeartbeatWithRetry(request, 10*time.Second)
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if err != nil {
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return false, fmt.Errorf("发送心跳请求失败: %w", err)
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}
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// 5. 处理响应
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if response.SecondTOTPSecret != "" {
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// 存储TOTP密钥
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totp.SetTOTPSecret(response.SecondTOTPSecret)
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log.Println("已更新TOTP密钥")
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}
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// 6. 如果有TOTP验证码,进行验证
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if response.TOTPCode != "" && totpSecret != "" {
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if !totp.ValidateTOTPCode(response.TOTPCode) {
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log.Println("TOTP验证码验证失败")
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return false, nil
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}
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}
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return response.Authorized, nil
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}
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105
cmii-uav-watchdog-agent/totp/auth.go
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105
cmii-uav-watchdog-agent/totp/auth.go
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@@ -0,0 +1,105 @@
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package totp
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import (
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"crypto/hmac"
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"crypto/sha1"
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"encoding/base32"
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"encoding/binary"
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"fmt"
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"strings"
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"sync"
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"time"
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)
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// TOTPConfig TOTP配置
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type TOTPConfig struct {
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Secret string // TOTP密钥
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Digits int // TOTP验证码长度
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TimeStep time.Duration // TOTP时间步长
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Algorithm string // TOTP算法
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}
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var (
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defaultConfig = TOTPConfig{
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Secret: "",
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Digits: 6,
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TimeStep: 30 * time.Second,
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Algorithm: "SHA1",
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}
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mu sync.RWMutex
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)
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// SetTOTPSecret 设置TOTP密钥
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func SetTOTPSecret(secret string) {
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mu.Lock()
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defer mu.Unlock()
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defaultConfig.Secret = secret
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}
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// GetTOTPSecret 获取TOTP密钥
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func GetTOTPSecret() string {
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mu.RLock()
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defer mu.RUnlock()
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return defaultConfig.Secret
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}
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// GenerateTOTPCode 生成TOTP验证码
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func GenerateTOTPCode() (string, error) {
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mu.RLock()
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config := defaultConfig
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mu.RUnlock()
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if config.Secret == "" {
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return "", fmt.Errorf("TOTP密钥未设置")
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}
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// 确保密钥是Base32编码的
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secret := strings.ToUpper(config.Secret)
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secret = strings.ReplaceAll(secret, " ", "")
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secretBytes, err := base32.StdEncoding.DecodeString(secret)
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if err != nil {
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return "", fmt.Errorf("解码TOTP密钥失败: %w", err)
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}
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// 获取当前时间戳并转换为TOTP时间计数器
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timeCounter := uint64(time.Now().Unix()) / uint64(config.TimeStep.Seconds())
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// 将时间计数器转换为字节数组
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timeBytes := make([]byte, 8)
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binary.BigEndian.PutUint64(timeBytes, timeCounter)
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// 使用HMAC-SHA1计算TOTP值
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h := hmac.New(sha1.New, secretBytes)
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h.Write(timeBytes)
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hash := h.Sum(nil)
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// 根据RFC 6238,我们使用哈希的最后一个字节的低4位作为偏移
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offset := hash[len(hash)-1] & 0x0f
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// 从哈希中提取4字节并转换为整数
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binary := binary.BigEndian.Uint32(hash[offset : offset+4])
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// 屏蔽最高位并获取指定位数的数字
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totp := binary & 0x7fffffff % uint32(pow10(config.Digits))
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// 将数字格式化为字符串,填充前导零
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return fmt.Sprintf("%0*d", config.Digits, totp), nil
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}
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// ValidateTOTPCode 验证TOTP验证码
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func ValidateTOTPCode(code string) bool {
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generatedCode, err := GenerateTOTPCode()
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if err != nil {
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return false
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}
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return code == generatedCode
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}
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// pow10 计算10的n次方
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func pow10(n int) int {
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result := 1
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for i := 0; i < n; i++ {
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result *= 10
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}
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return result
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}
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