From 9c066dff439ba453f4c362e1875b794cf3f362ed Mon Sep 17 00:00:00 2001
From: Dave Reisner <dreisner@archlinux.org>
Date: Sat, 9 Aug 2014 18:08:13 -0400
Subject: makepkg: disallow values of 'arch' which might be problematic

We rely on values in the arch array to be valid as part of variable
names, so extend the arch lint check to catch this.

This also cleans up lint_arch to restrict the use of "lint" only to the
package-specific architecture checks. It previously had an odd
declaration with a conditional expansion that would never be true.
---
 scripts/makepkg.sh.in | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

(limited to 'scripts')

diff --git a/scripts/makepkg.sh.in b/scripts/makepkg.sh.in
index 2518e668..49f5e599 100644
--- a/scripts/makepkg.sh.in
+++ b/scripts/makepkg.sh.in
@@ -2359,13 +2359,21 @@ lint_epoch() {
 }
 
 lint_arch() {
-	local name list=("${@:-"${arch[@]}"}")
+	local a name list
 
-	if [[ $list == 'any' ]]; then
+	if [[ $arch == 'any' ]]; then
 		return 0
 	fi
 
-	if ! in_array "$CARCH" "${list[@]}" && (( ! IGNOREARCH )); then
+	for a in "${arch[@]}"; do
+		if [[ $a = *[![:alnum:]_]* ]]; then
+			error "$(gettext "%s contains invalid characters: '%s'")" \
+					'arch' "${a//[[:alnum:]_]}"
+			ret=1
+		fi
+	done
+
+	if (( ! IGNOREARCH )) && ! in_array "$CARCH" "${arch[@]}"; then
 		error "$(gettext "%s is not available for the '%s' architecture.")" "$pkgbase" "$CARCH"
 		plain "$(gettext "Note that many packages may need a line added to their %s")" "$BUILDSCRIPT"
 		plain "$(gettext "such as %s.")" "arch=('$CARCH')"
-- 
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