2fas-server/internal/common/security/middleware.go
2024-03-16 19:05:21 +01:00

42 lines
1020 B
Go

package security
import (
"fmt"
"net/http"
"time"
"github.com/gin-gonic/gin"
"github.com/twofas/2fas-server/internal/common/logging"
"github.com/twofas/2fas-server/internal/common/rate_limit"
)
const defaultAPIBandwidthAbuseThreshold = 100
func IPAbuseAuditMiddleware(rateLimiter rate_limit.RateLimiter, rateLimitValue int) gin.HandlerFunc {
return func(c *gin.Context) {
clientIp := c.ClientIP()
key := fmt.Sprintf("security.api.ip_bandwidth_audit.%s", clientIp)
limitValue := rateLimitValue
if limitValue == 0 {
limitValue = defaultAPIBandwidthAbuseThreshold
}
rate := rate_limit.Rate{
TimeUnit: time.Minute,
Limit: limitValue,
}
limitReached := rateLimiter.Test(c, key, rate)
if limitReached {
logging.FromContext(c.Request.Context()).WithFields(logging.Fields{
"type": "security",
"uri": c.Request.URL.String(),
"ip": c.ClientIP(),
}).Warning("API potentially abused by Client IP, blocking")
c.AbortWithStatus(http.StatusTooManyRequests)
}
}
}