From 02da06dffdc475d69437f0347d25fb48931feff9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=88=98=E7=A5=A5=E8=B6=85?= <iwind.liu@gmail.com>
Date: Mon, 6 May 2024 21:06:55 +0800
Subject: [PATCH] =?UTF-8?q?WAF=E5=A2=9E=E5=8A=A0=E2=80=9C=E8=AF=B7?=
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---
 .../checkpoints/request_header_max_length.go  | 37 +++++++++++++++++++
 internal/waf/checkpoints/utils.go             | 12 +++++-
 2 files changed, 47 insertions(+), 2 deletions(-)
 create mode 100644 internal/waf/checkpoints/request_header_max_length.go

diff --git a/internal/waf/checkpoints/request_header_max_length.go b/internal/waf/checkpoints/request_header_max_length.go
new file mode 100644
index 0000000..3d5c6a6
--- /dev/null
+++ b/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
+}
diff --git a/internal/waf/checkpoints/utils.go b/internal/waf/checkpoints/utils.go
index f65301c..8cd4651 100644
--- a/internal/waf/checkpoints/utils.go
+++ b/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",