From 4f114f38178aeaffcc571aa42e2f930ca916f79d Mon Sep 17 00:00:00 2001
From: Ashley Whetter <ashley@awhetter.co.uk>
Date: Sun, 8 May 2016 17:28:28 +0100
Subject: libmakepkg: extract functions for integrity checking

Signed-off-by: Ashley Whetter <ashley@awhetter.co.uk>
Signed-off-by: Allan McRae <allan@archlinux.org>
---
 .../libmakepkg/integrity/generate_checksum.sh.in   | 107 +++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 scripts/libmakepkg/integrity/generate_checksum.sh.in

(limited to 'scripts/libmakepkg/integrity/generate_checksum.sh.in')

diff --git a/scripts/libmakepkg/integrity/generate_checksum.sh.in b/scripts/libmakepkg/integrity/generate_checksum.sh.in
new file mode 100644
index 00000000..7a567100
--- /dev/null
+++ b/scripts/libmakepkg/integrity/generate_checksum.sh.in
@@ -0,0 +1,107 @@
+#!/bin/bash
+#
+#   generate_checksum.sh - functions for generating source checksums
+#
+#   Copyright (c) 2014-2016 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 "$LIBMAKEPKG_INTEGRITY_GENERATE_CHECKSUM_SH" ]] && return
+LIBMAKEPKG_INTEGRITY_GENERATE_CHECKSUM_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/util/message.sh"
+source "$LIBRARY/util/pkgbuild.sh"
+
+generate_one_checksum() {
+	local integ=$1 arch=$2 sources numsrc indentsz idx
+
+	if [[ $arch ]]; then
+		array_build sources "source_$arch"
+	else
+		array_build sources 'source'
+	fi
+
+	numsrc=${#sources[*]}
+	if (( numsrc == 0 )); then
+		return
+	fi
+
+	if [[ $arch ]]; then
+		printf "%ssums_%s=(%n" "$integ" "$arch" indentsz
+	else
+		printf "%ssums=(%n" "$integ" indentsz
+	fi
+
+	for (( idx = 0; idx < numsrc; ++idx )); do
+		local netfile=${sources[idx]}
+		local proto sum
+		proto="$(get_protocol "$netfile")"
+
+		case $proto in
+			bzr*|git*|hg*|svn*)
+				sum="SKIP"
+				;;
+			*)
+				if [[ $netfile != *.@(sig?(n)|asc) ]]; then
+					local file
+					file="$(get_filepath "$netfile")" || missing_source_file "$netfile"
+					sum="$(openssl dgst -${integ} "$file")"
+					sum=${sum##* }
+				else
+					sum="SKIP"
+				fi
+				;;
+		esac
+
+		# indent checksum on lines after the first
+		printf "%*s%s" $(( idx ? indentsz : 0 )) '' "'$sum'"
+
+		# print a newline on lines before the last
+		(( idx < (numsrc - 1) )) && echo
+	done
+
+	echo ")"
+}
+
+generate_checksums() {
+	msg "$(gettext "Generating checksums for source files...")"
+
+	if ! type -p openssl >/dev/null; then
+		error "$(gettext "Cannot find the %s binary required for generating sourcefile checksums.")" "openssl"
+		exit 1 # $E_MISSING_PROGRAM
+	fi
+
+	local integlist
+	if (( $# == 0 )); then
+		IFS=$'\n' read -rd '' -a integlist < <(get_integlist)
+	else
+		integlist=("$@")
+	fi
+
+	local integ
+	for integ in "${integlist[@]}"; do
+		if ! in_array "$integ" "${known_hash_algos[@]}"; then
+			error "$(gettext "Invalid integrity algorithm '%s' specified.")" "$integ"
+			exit 1 # $E_CONFIG_ERROR
+		fi
+
+		generate_one_checksum "$integ"
+		for a in "${arch[@]}"; do
+			generate_one_checksum "$integ" "$a"
+		done
+	done
+}
-- 
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