[WAF]规则中增加请求Header长度限制和响应Header长度限制

internal/waf/checkpoints/response_general_header_length.go

@@ -0,0 +1,45 @@
+package checkpoints
+
+import (
+	"github.com/TeaOSLab/EdgeNode/internal/waf/requests"
+	"github.com/iwind/TeaGo/maps"
+	"github.com/iwind/TeaGo/types"
+)
+
+type ResponseGeneralHeaderLengthCheckpoint struct {
+	Checkpoint
+}
+
+func (this *ResponseGeneralHeaderLengthCheckpoint) IsRequest() bool {
+	return false
+}
+
+func (this *ResponseGeneralHeaderLengthCheckpoint) IsComposed() bool {
+	return true
+}
+
+func (this *ResponseGeneralHeaderLengthCheckpoint) RequestValue(req *requests.Request, param string, options maps.Map) (value interface{}, sysErr error, userErr error) {
+
+	return
+}
+
+func (this *ResponseGeneralHeaderLengthCheckpoint) ResponseValue(req *requests.Request, resp *requests.Response, param string, options maps.Map) (value interface{}, sysErr error, userErr error) {
+	value = false
+
+	headers := options.GetSlice("headers")
+	if len(headers) == 0 {
+		return
+	}
+
+	length := options.GetInt("length")
+
+	for _, header := range headers {
+		v := req.Header.Get(types.String(header))
+		if len(v) > length {
+			value = true
+			break
+		}
+	}
+
+	return
+}