libmakepkg: Add basic rules to lint makepkg.conf variables

Currently the only things we check are:

- Things that should be arrays, are not strings, and vice versa (this
  was mostly copy-pasted from the similar code in lint_pkgbuild).
- Variables that are meant to contain pathname components cannot contain
  a newline character, because newline characters in pathnames are weird
  and also don't play well with future changes intended for the
  --packagelist option.

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

1 files changed, 46 insertions, 0 deletions

diff --git a/scripts/libmakepkg/lint_config/paths.sh.in b/scripts/libmakepkg/lint_config/paths.sh.in
new file mode 100644
index 00000000..95630b58
--- /dev/null
+++ b/scripts/libmakepkg/lint_config/paths.sh.in
@@ -0,0 +1,46 @@
+#!/bin/bash
+#
+#   paths.sh - Check that pathname components do not contain odd characters
+#
+#   Copyright (c) 2018 Pacman Development Team <pacman-dev@archlinux.org>
+#
+#   This program is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 2 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+[[ -n "$LIBMAKEPKG_LINT_CONFIG_PATHS_SH" ]] && return
+LIBMAKEPKG_LINT_CONFIG_PATHS_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/util/message.sh"
+source "$LIBRARY/util/pkgbuild.sh"
+
+lint_config_functions+=('lint_paths')
+
+
+lint_paths() {
+	local pathvars=(BUILDDIR PKGDEST SRCDEST SRCPKGDEST LOGDEST PKGEXT SRCEXT)
+
+	local i ret=0
+
+	for i in ${pathvars[@]}; do
+		if [[ ${!i} = *$'\n'* ]]; then
+			error "$(gettext "%s contains invalid characters: '%s'")" \
+					"$i" "${!i//[^$'\n']}"
+			ret=1
+		fi
+	done
+
+	return $ret
+}