实现WAF

internal/waf/checkpoints/request_form_arg.go

@@ -0,0 +1,39 @@
+package checkpoints
+
+import (
+	"github.com/TeaOSLab/EdgeNode/internal/waf/requests"
+	"net/url"
+)
+
+// ${requestForm.arg}
+type RequestFormArgCheckpoint struct {
+	Checkpoint
+}
+
+func (this *RequestFormArgCheckpoint) RequestValue(req *requests.Request, param string, options map[string]interface{}) (value interface{}, sysErr error, userErr error) {
+	if req.Body == nil {
+		value = ""
+		return
+	}
+
+	if len(req.BodyData) == 0 {
+		data, err := req.ReadBody(32 * 1024 * 1024) // read 32m bytes
+		if err != nil {
+			return "", err, nil
+		}
+
+		req.BodyData = data
+		req.RestoreBody(data)
+	}
+
+	// TODO improve performance
+	values, _ := url.ParseQuery(string(req.BodyData))
+	return values.Get(param), nil, nil
+}
+
+func (this *RequestFormArgCheckpoint) ResponseValue(req *requests.Request, resp *requests.Response, param string, options map[string]interface{}) (value interface{}, sysErr error, userErr error) {
+	if this.IsRequest() {
+		return this.RequestValue(req, param, options)
+	}
+	return
+}