From d5a33e9150da61d95ad3ae06f6754a6dd101124a Mon Sep 17 00:00:00 2001
From: Derek Stevens <nilix@nilfm.cc>
Date: Sun, 5 Feb 2023 09:50:53 -0700
Subject: [PATCH] fix buffer overflow in countlines for files greater than 32k

Signed-off-by: Derek Stevens <nilix@nilfm.cc>
---
 routes/template.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/routes/template.go b/routes/template.go
index 408841a..20d678b 100644
--- a/routes/template.go
+++ b/routes/template.go
@@ -59,7 +59,7 @@ func countLines(r io.Reader) (int, error) {
 		switch {
 		case err == io.EOF:
 			/* handle last line not having a newline at the end */
-			if bufLen >= 1 && buf[bufLen-1] != '\n' {
+			if bufLen >= 1 && buf[(bufLen-1)%(32*1024)] != '\n' {
 				count++
 			}
 			return count, nil