Use coreutils binaries for checking/generating checksums

If pacman is build against a crypto library other than openssl, it makes no
sense to require makepkg to use it.

The only currently considered alternative to openssl is nettle, which has no
binary for base64 encode/decode. This means that we could replace the hashing
cacluations with nettle-hash, but would require base64 from coreutils.

Given makepkg already relies heavily on coreutils, we might as well use all
the coreutils hashing binaries too.

This patch also improves the checking of required binaries for hashing
operations.

Signed-off-by: Allan McRae <allan@archlinux.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/scripts/libmakepkg/integrity/verify_checksum.sh.in b/scripts/libmakepkg/integrity/verify_checksum.sh.in
index 44a2b2e1..5830aff3 100644
--- a/scripts/libmakepkg/integrity/verify_checksum.sh.in
+++ b/scripts/libmakepkg/integrity/verify_checksum.sh.in
@@ -82,8 +82,8 @@ verify_integrity_one() {
 		return 1
 	fi
 
-	local realsum="$(openssl dgst -${integ} "$file")"
-	realsum="${realsum##* }"
+	local realsum="$("${integ}sum" "$file")"
+	realsum="${realsum%% *}"
 	if [[ ${expectedsum,,} = "$realsum" ]]; then
 		printf '%s\n' "$(gettext "Passed")" >&2
 	else