makepkg: add PACMAN_AUTH configurable setting for sudo elevation

If specified, this will be used no matter what. If not, then we check if
sudo exists and use that, or else fall back on su.

Implements FS#32621

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

2 files changed, 11 insertions, 4 deletions

diff --git a/scripts/libmakepkg/executable/sudo.sh.in b/scripts/libmakepkg/executable/sudo.sh.in
index ea494beb..1e139238 100644
--- a/scripts/libmakepkg/executable/sudo.sh.in
+++ b/scripts/libmakepkg/executable/sudo.sh.in
@@ -29,7 +29,7 @@ executable_functions+=('executable_sudo')
 
 executable_sudo() {
     if (( DEP_BIN || RMDEPS || INSTALL )); then
-        if ! type -p sudo >/dev/null; then
+        if (( ${#PACMAN_AUTH[@]} == 0 )) && ! type -p sudo >/dev/null; then
             warning "$(gettext "Cannot find the %s binary. Will use %s to acquire root privileges.")" "sudo" "su"
         fi
     fi
diff --git a/scripts/makepkg.sh.in b/scripts/makepkg.sh.in
index f4a2de7d..92cb6398 100644
--- a/scripts/makepkg.sh.in
+++ b/scripts/makepkg.sh.in
@@ -225,15 +225,22 @@ missing_source_file() {
 }
 
 run_pacman() {
-	local cmd
+	local cmd cmdescape
 	if [[ $1 = -@(T|Q)*([[:alpha:]]) ]]; then
 		cmd=("$PACMAN_PATH" "$@")
 	else
 		cmd=("$PACMAN_PATH" "${PACMAN_OPTS[@]}" "$@")
-		if type -p sudo >/dev/null; then
+		cmdescape="$(printf '%q ' "${cmd[@]}")"
+		if (( ${#PACMAN_AUTH[@]} )); then
+			if in_array '%c' "${PACMAN_AUTH[@]}"; then
+				cmd=("${PACMAN_AUTH[@]/\%c/$cmdescape}")
+			else
+				cmd=("${PACMAN_AUTH[@]}" "${cmd[@]}")
+			fi
+		elif type -p sudo >/dev/null; then
 			cmd=(sudo "${cmd[@]}")
 		else
-			cmd=(su root -c "$(printf '%q ' "${cmd[@]}")")
+			cmd=(su root -c "$cmdescape")
 		fi
 		local lockfile="$(pacman-conf DBPath)/db.lck"
 		while [[ -f $lockfile ]]; do