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