# Maintainer: Mitch Tishmack <mitch.tishmack@gmail.com>
# TODO: unbundle lzma-sdk
pkgname=upx
pkgver=3.96
pkgrel=0
pkgdesc="The Ultimate Packer for eXecutables"
url="https://upx.github.io"
arch="all !s390x !aarch64 !armhf !armv7 !mips !mips64" # Failure to build/run
license="GPL-2.0 Public-Domain"
# perl-dev is used to generate man pages
makedepends="bash perl-dev ucl-dev zlib-dev"
subpackages="$pkgname-doc"
source="https://github.com/upx/upx/releases/download/v$pkgver/upx-$pkgver-src.tar.xz
	0001-rm-broken-whitespace-check.patch"
builddir="$srcdir/$pkgname-$pkgver-src"

# secfixes:
#   3.96-r0:
#     - CVE-2018-11243
#     - CVE-2019-14296
#     - CVE-2019-20021
#     - CVE-2019-20053

build() {
	make CXXFLAGS_OPTIMIZE= UPX_LZMADIR="$srcdir" all
}

check() {
	# upx -q is not quiet enough by design or broken

	local upx=src/upx.out
	local out

	# first check some big dynamically-linked binary
	echo "checking -pie..."

	cp -f /bin/busybox ./sh
	for i in "-1" "-d"; do
		$upx $i -qf sh >/dev/null
		out="$(./sh -c 'echo works')"
		test "x$out" = "xworks"
	done
	rm -f sh

	# FIXME: fix broken architectures
	case "$CARCH" in
		x86) return 0;;
	esac

	# then check less common statically-linked binaries (PIE and non-PIE)
	for v in "-static"; do # FIXME: fix "-static -no-pie"
		echo "checking $v..."

		# must be compressible (i.e. big enough) so pull printf etc
		$CC -o upxtest -pipe -std=c11 -pedantic -Wall $CFLAGS $LDFLAGS $v -x c - -latomic <<-EOF
		#include <stdatomic.h>
		#include <stdio.h>
		static const atomic_llong b = ATOMIC_VAR_INIT(0x1000200030004000LL);
		int main(int argc, char *argv[const]) {
			atomic_llong a = ATOMIC_VAR_INIT(argc);
			atomic_fetch_add(&a, b);
			printf("%d,%#llx\n", argc, a);
			return 0;
		}
		EOF
		cp upxtest upxtest.orig

		for i in "-1" "-d"; do
			echo "$upx $i -qf upxtest"
			$upx $i -qf upxtest >/dev/null
			out=$(./upxtest "")
			test "x$out" = "x2,0x1000200030004002"
		done
	done
	rm -f upxtest
}

package() {
	install -D -m 0755 src/upx.out "$pkgdir"/usr/bin/upx
	install -D -m 0644 doc/upx.1 "$pkgdir"/usr/share/man/man1/upx.1
}

sha512sums="2d4d1be21d274d9bfdee9b9815396f5e5ff0bcdfb781b7be5fafa4d1e224028e412ec5f5ba607c482671aae27ccf9069abb2db0fb58f78f3a102a51897df2b11  upx-3.96-src.tar.xz
a41dd8b8e9e884c78c410a49b4486963f6dd90759ba49eb05123e81b8e4fbe3d23af2ba5c2acf64218b7edeec7df0793b4030d1375c167a183a4d70d21addf50  0001-rm-broken-whitespace-check.patch"