WAF增加“请求报头最大长度”参数

internal/waf/checkpoints/request_header_max_length.go

@@ -0,0 +1,37 @@
+package checkpoints
+
+import (
+	"github.com/TeaOSLab/EdgeNode/internal/waf/requests"
+	"github.com/TeaOSLab/EdgeNode/internal/waf/utils"
+	"github.com/iwind/TeaGo/maps"
+)
+
+type RequestHeaderMaxLengthCheckpoint struct {
+	Checkpoint
+}
+
+func (this *RequestHeaderMaxLengthCheckpoint) RequestValue(req requests.Request, param string, options maps.Map, ruleId int64) (value any, hasRequestBody bool, sysErr error, userErr error) {
+	var maxLen int
+	for _, v := range req.WAFRaw().Header {
+		for _, subV := range v {
+			var l = len(subV)
+			if l > maxLen {
+				maxLen = l
+			}
+		}
+	}
+	value = maxLen
+
+	return
+}
+
+func (this *RequestHeaderMaxLengthCheckpoint) ResponseValue(req requests.Request, resp *requests.Response, param string, options maps.Map, ruleId int64) (value any, hasRequestBody bool, sysErr error, userErr error) {
+	if this.IsRequest() {
+		return this.RequestValue(req, param, options, ruleId)
+	}
+	return
+}
+
+func (this *RequestHeaderMaxLengthCheckpoint) CacheLife() utils.CacheLife {
+	return utils.CacheShortLife
+}

internal/waf/checkpoints/utils.go

@@ -243,13 +243,21 @@ var AllCheckpoints = []*CheckpointDefinition{
 		Priority:    100,
 	},
 	{
-		Name:        "单个Header值",
+		Name:        "单个报头值",
 		Prefix:      "header",
-		Description: "单个Header值",
+		Description: "单个报头值",
 		HasParams:   true,
 		Instance:    new(RequestHeaderCheckpoint),
 		Priority:    100,
 	},
+	{
+		Name:        "请求报头最大长度",
+		Prefix:      "headerMaxLength",
+		Description: "最长的请求报头的长度。",
+		HasParams:   false,
+		Instance:    new(RequestHeaderMaxLengthCheckpoint),
+		Priority:    100,
+	},
 	{
 		Name:        "国家/地区名称",
 		Prefix:      "geoCountryName",