From 004a6948b293a8c3db94cb78b4f620e7d01d3a97 Mon Sep 17 00:00:00 2001
From: vyzo <vyzo@hackzen.org>
Date: Wed, 22 Dec 2021 13:27:39 +0200
Subject: [PATCH] add nil receiver safety to basic resource scopes

---
 scope.go | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/scope.go b/scope.go
index 21402b5..e7c5089 100644
--- a/scope.go
+++ b/scope.go
@@ -41,6 +41,10 @@ func (rc *ResourceScope) releaseBuffers() {
 }
 
 func (rc *ResourceScope) ReserveMemory(size int) error {
+	if rc == nil {
+		return nil
+	}
+
 	rc.Lock()
 	defer rc.Unlock()
 
@@ -53,6 +57,10 @@ func (rc *ResourceScope) ReserveMemory(size int) error {
 }
 
 func (rc *ResourceScope) ReleaseMemory(size int) {
+	if rc == nil {
+		return
+	}
+
 	rc.Lock()
 	defer rc.Unlock()
 
@@ -65,6 +73,10 @@ func (rc *ResourceScope) ReleaseMemory(size int) {
 }
 
 func (rc *ResourceScope) GetBuffer(size int) ([]byte, error) {
+	if rc == nil {
+		return make([]byte, size), nil
+	}
+
 	rc.Lock()
 	defer rc.Unlock()
 
@@ -81,6 +93,12 @@ func (rc *ResourceScope) GetBuffer(size int) ([]byte, error) {
 }
 
 func (rc *ResourceScope) GrowBuffer(oldbuf []byte, newsize int) ([]byte, error) {
+	if rc == nil {
+		newbuf := make([]byte, newsize)
+		copy(newbuf, oldbuf)
+		return newbuf, nil
+	}
+
 	rc.Lock()
 	defer rc.Unlock()
 
@@ -115,6 +133,10 @@ func (rc *ResourceScope) ReleaseBuffer(buf []byte) {
 }
 
 func (rc *ResourceScope) Stat() network.ScopeStat {
+	if rc == nil {
+		return network.ScopeStat{}
+	}
+
 	rc.Lock()
 	defer rc.Unlock()