Merge pull request #1556 from QuantumNous/fix-register-mail-verifycode-waiting-time

fix: 注册时发送邮件验证码没有等待时间

middleware/email-verification-rate-limit.go

@@ -0,0 +1,80 @@
+package middleware
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"one-api/common"
+	"time"
+
+	"github.com/gin-gonic/gin"
+)
+
+const (
+	EmailVerificationRateLimitMark = "EV"
+	EmailVerificationMaxRequests   = 2  // 30秒内最多2次
+	EmailVerificationDuration      = 30 // 30秒时间窗口
+)
+
+func redisEmailVerificationRateLimiter(c *gin.Context) {
+	ctx := context.Background()
+	rdb := common.RDB
+	key := "emailVerification:" + EmailVerificationRateLimitMark + ":" + c.ClientIP()
+
+	count, err := rdb.Incr(ctx, key).Result()
+	if err != nil {
+		// fallback
+		memoryEmailVerificationRateLimiter(c)
+		return
+	}
+
+	// 第一次设置键时设置过期时间
+	if count == 1 {
+		_ = rdb.Expire(ctx, key, time.Duration(EmailVerificationDuration)*time.Second).Err()
+	}
+
+	// 检查是否超出限制
+	if count <= int64(EmailVerificationMaxRequests) {
+		c.Next()
+		return
+	}
+
+	// 获取剩余等待时间
+	ttl, err := rdb.TTL(ctx, key).Result()
+	waitSeconds := int64(EmailVerificationDuration)
+	if err == nil && ttl > 0 {
+		waitSeconds = int64(ttl.Seconds())
+	}
+
+	c.JSON(http.StatusTooManyRequests, gin.H{
+		"success": false,
+		"message": fmt.Sprintf("发送过于频繁，请等待 %d 秒后再试", waitSeconds),
+	})
+	c.Abort()
+}
+
+func memoryEmailVerificationRateLimiter(c *gin.Context) {
+	key := EmailVerificationRateLimitMark + ":" + c.ClientIP()
+
+	if !inMemoryRateLimiter.Request(key, EmailVerificationMaxRequests, EmailVerificationDuration) {
+		c.JSON(http.StatusTooManyRequests, gin.H{
+			"success": false,
+			"message": "发送过于频繁，请稍后再试",
+		})
+		c.Abort()
+		return
+	}
+
+	c.Next()
+}
+
+func EmailVerificationRateLimit() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		if common.RedisEnabled {
+			redisEmailVerificationRateLimiter(c)
+		} else {
+			inMemoryRateLimiter.Init(common.RateLimitKeyExpirationDuration)
+			memoryEmailVerificationRateLimiter(c)
+		}
+	}
+}