feat: v2.0.0 完整代码优化升级

🔴 高优先级 (6项全部完成):
- 数据库事务支持 (InsertMessageWithLog)
- SQL注入修复 (参数化查询)
- 配置验证 (Validate方法)
- 会话密钥强化 (长度验证)
- 签名验证增强 (SignVerificationResult)
- 密码哈希支持 (bcrypt)

🟡 中优先级 (15项全部完成):
- 连接池配置 (MaxOpenConns, MaxIdleConns)
- 查询优化 (范围查询, 索引)
- 健康检查增强 (/health 端点)
- API版本控制 (/api/v1/*)
- 认证中间件 (RequireAuth, RequireAPIAuth)
- 定时任务优化 (robfig/cron)
- 配置文件示例 (config.example.yaml)
- 常量定义 (config/constants.go)
- 开发文档 (DEVELOPMENT.md)

🟢 低优先级 (9项全部完成):
- Docker支持 (Dockerfile, docker-compose.yml)
- Makefile构建脚本
- 优化报告 (OPTIMIZATION_REPORT.md)
- 密码哈希工具 (tools/password_hash.go)
- 14个新文件
- 30项优化100%完成

版本: v2.0.0

handlers/handlers.go

@@ -93,7 +93,7 @@ func Index(w http.ResponseWriter, r *http.Request) {
 	if page < 1 {
 		page = 1
 	}
-	limit := 20
+	limit := config.DefaultPageSize
 	from := r.URL.Query().Get("from")
 	search := r.URL.Query().Get("search")
 
@@ -173,19 +173,32 @@ func Login(w http.ResponseWriter, r *http.Request) {
 
 	cfg := config.Get()
 	if cfg.Security.Enabled {
-		if username == cfg.Security.Username && password == cfg.Security.Password {
-			if err := auth.Login(w, r, username); err != nil {
-				log.Printf("创建会话失败: %v", err)
-				http.Error(w, "创建会话失败: "+err.Error(), http.StatusInternalServerError)
-				return
-			}
-			http.Redirect(w, r, "/", http.StatusSeeOther)
+		// 验证用户名
+		if username != cfg.Security.Username {
+			templates.ExecuteTemplate(w, "login.html", map[string]string{
+				"error": "用户名或密码错误",
+			})
 			return
 		}
-		// 登录失败
-		templates.ExecuteTemplate(w, "login.html", map[string]string{
-			"error": "用户名或密码错误",
-		})
+
+		// 验证密码（支持哈希和明文）
+		if !auth.VerifyPassword(password, cfg.Security.PasswordHash, cfg.Security.Password) {
+			// 记录登录失败日志
+			log.Printf("登录失败: 用户=%s, IP=%s", username, getClientIP(r))
+			templates.ExecuteTemplate(w, "login.html", map[string]string{
+				"error": "用户名或密码错误",
+			})
+			return
+		}
+
+		// 创建会话
+		if err := auth.Login(w, r, username); err != nil {
+			log.Printf("创建会话失败: %v", err)
+			http.Error(w, "创建会话失败: "+err.Error(), http.StatusInternalServerError)
+			return
+		}
+		log.Printf("登录成功: 用户=%s, IP=%s", username, getClientIP(r))
+		http.Redirect(w, r, "/", http.StatusSeeOther)
 		return
 	}
 
@@ -247,7 +260,7 @@ func Logs(w http.ResponseWriter, r *http.Request) {
 	if page < 1 {
 		page = 1
 	}
-	limit := 50
+	limit := config.DefaultLogsPerPage
 
 	logs, total, err := database.GetLogs(page, limit)
 	if err != nil {
@@ -342,18 +355,26 @@ func ReceiveSMS(w http.ResponseWriter, r *http.Request) {
 	cfg := config.Get()
 	signValid := sql.NullBool{Bool: true, Valid: true}
 	if token != "" && cfg.Security.SignVerify {
-		valid, err := sign.VerifySign(token, timestamp, signStr, &cfg.Security)
+		result, err := sign.VerifySign(token, timestamp, signStr, &cfg.Security)
 		if err != nil {
 			writeJSON(w, models.APIResponse{
 				Success: false,
-				Error:   "签名验证错误",
+				Error:   "签名验证错误: " + err.Error(),
 			}, http.StatusInternalServerError)
 			return
 		}
-		signValid.Bool = valid
+		signValid.Bool = result.Valid
 		signValid.Valid = true
-		if !valid {
-			signValid.Bool = false
+
+		// 记录签名的 IP 地址
+		clientIP := getClientIP(r)
+		if result.Valid {
+			log.Printf("签名验证通过: token=%s, timestamp=%d, ip=%s, reason=%s",
+				token, timestamp, clientIP, result.Reason)
+		} else {
+			log.Printf("签名验证失败: token=%s, timestamp=%d, ip=%s, reason=%s",
+				token, timestamp, clientIP, result.Reason)
+			// 签名验证失败时仍然记录消息（标记为未验证）
 		}
 	}
 
@@ -368,30 +389,8 @@ func ReceiveSMS(w http.ResponseWriter, r *http.Request) {
 		IPAddress:    getClientIP(r),
 	}
 
-	messageID, err := database.InsertMessage(msg)
-	if err != nil {
-		// 记录失败日志
-		log := &models.ReceiveLog{
-			FromNumber:   from,
-			Content:      content,
-			Timestamp:    timestamp,
-			Sign:         sql.NullString{String: signStr, Valid: signStr != ""},
-			SignValid:    signValid,
-			IPAddress:    getClientIP(r),
-			Status:       "error",
-			ErrorMessage: sql.NullString{String: err.Error(), Valid: true},
-		}
-		database.InsertLog(log)
-
-		writeJSON(w, models.APIResponse{
-			Success: false,
-			Error:   "保存消息失败",
-		}, http.StatusInternalServerError)
-		return
-	}
-
 	// 记录成功日志
-	log := &models.ReceiveLog{
+	receiveLog := &models.ReceiveLog{
 		FromNumber: from,
 		Content:    content,
 		Timestamp:  timestamp,
@@ -400,7 +399,22 @@ func ReceiveSMS(w http.ResponseWriter, r *http.Request) {
 		IPAddress:  getClientIP(r),
 		Status:     "success",
 	}
-	database.InsertLog(log)
+
+	// 使用事务同时插入消息和日志
+	messageID, err := database.InsertMessageWithLog(msg, receiveLog)
+	if err != nil {
+		// 记录失败日志（尝试单独插入）
+		receiveLog.Status = "error"
+		receiveLog.ErrorMessage = sql.NullString{String: err.Error(), Valid: true}
+		// 忽略日志插入错误，避免影响主错误返回
+		_, _ = database.InsertLog(receiveLog)
+
+		writeJSON(w, models.APIResponse{
+			Success: false,
+			Error:   "保存消息失败",
+		}, http.StatusInternalServerError)
+		return
+	}
 
 	writeJSON(w, models.APIResponse{
 		Success:   true,
@@ -422,10 +436,10 @@ func APIGetMessages(w http.ResponseWriter, r *http.Request) {
 	}
 	limit, _ := strconv.Atoi(r.URL.Query().Get("limit"))
 	if limit <= 0 {
-		limit = 20
+		limit = config.DefaultPageSize
 	}
-	if limit > 100 {
-		limit = 100
+	if limit > config.MaxPageSize {
+		limit = config.MaxPageSize
 	}
 	from := r.URL.Query().Get("from")
 	search := r.URL.Query().Get("search")