From b30e94c0aca10b57ce734f7fcf9b7600537dc136 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Timo=20Ter=C3=A4s?= <timo.teras@iki.fi>
Date: Tue, 3 Aug 2021 21:33:49 +0300
Subject: [PATCH] libfetch: fix http chunked mode handling

Unbreak handling of base 16 in fetch_parseuint(). It is used
only in http chunked mode handling.

Fixes: "libfetch: fix range checking for http/ftp protocol parsing"
---
 libfetch/common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libfetch/common.c b/libfetch/common.c
index 01c5f2b..248b575 100644
--- a/libfetch/common.c
+++ b/libfetch/common.c
@@ -181,7 +181,7 @@ fetch_parseuint(const char *str, const char **endptr, int radix, uintmax_t max)
 		unsigned char ch = (unsigned char)*p;
 		if (isdigit(ch))
 			d = ch - '0';
-		else	d = tolower(ch - 'a');
+		else	d = tolower(ch) - 'a' + 10;
 		if (d > radix || val > maxx) goto err;
 		val *= radix;
 		if (val > max-d) goto err;