1 files changed, 303 insertions, 0 deletions
diff --git a/makechrootpkg.in b/makechrootpkg.in
new file mode 100644
index 0000000..43acc3f
--- /dev/null
+++ b/makechrootpkg.in
@@ -0,0 +1,303 @@
+#!/bin/bash
+# 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; version 2 of the License.
+#
+# 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.
+
+shopt -s nullglob
+
+makepkg_args='-s --noconfirm -L'
+repack=false
+update_first=false
+clean_first=false
+install_pkg=
+add_to_db=false
+run_namcap=false
+chrootdir=
+
+default_copy=$USER
+[[ -n $SUDO_USER ]] && default_copy=$SUDO_USER
+[[ -z $default_copy || $default_copy = root ]] && default_copy=copy
+
+usage() {
+	echo "usage ${0##*/} [options] -r <chrootdir> [--] [makepkg args]"
+	echo ' Run this script in a PKGBUILD dir to build a package inside a'
+	echo ' clean chroot. All unrecognized arguments passed to this script'
+	echo ' will be passed to makepkg.'
+	echo ''
+	echo ' The chroot dir consists of the following directories:'
+	echo ' <chrootdir>/{root, copy} but only "root" is required'
+	echo ' by default. The working copy will be created as needed'
+	echo ''
+	echo 'The chroot "root" directory must be created via the following'
+	echo 'command:'
+	echo '    mkarchroot <chrootdir>/root base base-devel sudo'
+	echo ''
+	echo "Default makepkg args: $makepkg_args"
+	echo ''
+	echo 'Flags:'
+	echo '-h         This help'
+	echo '-c         Clean the chroot before building'
+	echo '-u         Update the working copy of the chroot before building'
+	echo '           This is useful for rebuilds without dirtying the pristine'
+	echo '           chroot'
+	echo '-d         Add the package to a local db at /repo after building'
+	echo '-r <dir>   The chroot dir to use'
+	echo '-I <pkg>   Install a package into the working copy of the chroot'
+	echo '-l <copy>  The directory to use as the working copy of the chroot'
+	echo '           Useful for maintaining multiple copies.'
+	echo '-n         Run namcap on the package'
+	echo "           Default: $default_copy"
+	exit 1
+}
+
+while getopts 'hcudr:I:l:n' arg; do
+	case "$arg" in
+		h) usage ;;
+		c) clean_first=true ;;
+		u) update_first=true ;;
+		d) add_to_db=true ;;
+		r) chrootdir="$OPTARG" ;;
+		I) install_pkg="$OPTARG" ;;
+		l) copy="$OPTARG" ;;
+		n) run_namcap=true ;;
+		*) makepkg_args="$makepkg_args -$arg $OPTARG" ;;
+	esac
+done
+
+# Canonicalize chrootdir, getting rid of trailing /
+chrootdir=$(readlink -e "$chrootdir")
+
+if [[ ${copy:0:1} = / ]]; then
+	copydir=$copy
+else
+	[[ -z $copy ]] && copy=$default_copy
+	copydir="$chrootdir/$copy"
+fi
+
+# Pass all arguments after -- right to makepkg
+makepkg_args="$makepkg_args ${*:$OPTIND}"
+
+# See if -R was passed to makepkg
+for arg in ${*:$OPTIND}; do
+	if [[ $arg = -R ]]; then
+		repack=1
+		break
+	fi
+done
+
+if (( EUID )); then
+	echo 'This script must be run as root.'
+	exit 1
+fi
+
+if [[ ! -f PKGBUILD && -z $install_pkg ]]; then
+	echo 'This must be run in a directory containing a PKGBUILD.'
+	exit 1
+fi
+
+if [[ ! -d $chrootdir ]]; then
+	echo "No chroot dir defined, or invalid path '$chrootdir'"
+	exit 1
+fi
+
+if [[ ! -d $chrootdir/root ]]; then
+	echo 'Missing chroot dir root directory.'
+	echo "Try using: mkarchroot $chrootdir/root base base-devel sudo"
+	exit 1
+fi
+
+umask 0022
+
+# Lock the chroot we want to use. We'll keep this lock until we exit.
+# Note this is the same FD number as in mkarchroot
+exec 9>"$copydir.lock"
+if ! flock -n 9; then
+	echo -n "locking chroot copy '$copy'..."
+	flock 9
+	echo "done"
+fi
+
+if [[ ! -d $copydir ]] || $clean_first; then
+	# Get a read lock on the root chroot to make
+	# sure we don't clone a half-updated chroot
+	exec 8>"$chrootdir/root.lock"
+
+	if ! flock -sn 8; then
+		echo -n "locking clean chroot..."
+		flock -s 8
+		echo "done"
+	fi
+
+	echo -n 'creating clean working copy...'
+	use_rsync=false
+	if type -P btrfs >/dev/null; then
+		[[ -d $copydir ]] && btrfs subvolume delete "$copydir" &>/dev/null
+		btrfs subvolume snapshot "$chrootdir/root" "$copydir" &>/dev/null ||
+			use_rsync=true
+	else
+		use_rsync=true
+	fi
+
+	if $use_rsync; then
+		mkdir -p "$copydir"
+		rsync -a --delete -q -W -x "$chrootdir/root/" "$copydir"
+	fi
+	echo 'done'
+
+	# Drop the read lock again
+	exec 8>&-
+fi
+
+if [[ -n $install_pkg ]]; then
+	pkgname="${install_pkg##*/}"
+	cp "$install_pkg" "$copydir/$pkgname"
+
+	mkarchroot -r "pacman -U /$pkgname --noconfirm" "$copydir"
+	ret=$?
+
+	rm "$copydir/$pkgname"
+
+	# Exit early, we've done all we need to
+	exit $ret
+fi
+
+$update_first && mkarchroot -u "$copydir"
+
+mkdir -p "$copydir/build"
+
+# Remove anything in there UNLESS -R (repack) was passed to makepkg
+$repack || rm -rf "$copydir"/build/*
+
+# Read .makepkg.conf even if called via sudo
+if [[ -n $SUDO_USER ]]; then
+	makepkg_conf="$(eval echo ~$SUDO_USER)/.makepkg.conf"
+else
+	makepkg_conf="$HOME/.makepkg.conf"
+fi
+
+# Get SRC/PKGDEST from makepkg.conf
+if [[ -f $makepkg_conf ]]; then
+	eval $(grep '^SRCDEST=' "$makepkg_conf")
+	eval $(grep '^PKGDEST=' "$makepkg_conf")
+	eval $(grep '^MAKEFLAGS=' "$makepkg_conf")
+	eval $(grep '^PACKAGER=' "$makepkg_conf")
+fi
+
+[[ -z $SRCDEST ]] && eval $(grep '^SRCDEST=' /etc/makepkg.conf)
+[[ -z $PKGDEST ]] && eval $(grep '^PKGDEST=' /etc/makepkg.conf)
+[[ -z $MAKEFLAGS ]] && eval $(grep '^MAKEFLAGS=' /etc/makepkg.conf)
+[[ -z $PACKAGER ]] && eval $(grep '^PACKAGER=' /etc/makepkg.conf)
+
+# Use PKGBUILD directory if PKGDEST or SRCDEST don't exist
+[[ -d $PKGDEST ]] || PKGDEST=.
+[[ -d $SRCDEST ]] || SRCDEST=.
+
+mkdir -p "$copydir/pkgdest"
+if ! grep -q 'PKGDEST="/pkgdest"' "$copydir/etc/makepkg.conf"; then
+	echo 'PKGDEST="/pkgdest"' >> "$copydir/etc/makepkg.conf"
+fi
+
+mkdir -p "$copydir/srcdest"
+if ! grep -q 'SRCDEST="/srcdest"' "$copydir/etc/makepkg.conf"; then
+	echo 'SRCDEST="/srcdest"' >> "$copydir/etc/makepkg.conf"
+fi
+
+if [[ -n $MAKEFLAGS ]]; then 
+	sed -i '/^MAKEFLAGS=/d' "$copydir/etc/makepkg.conf"
+	echo "MAKEFLAGS='${MAKEFLAGS}'" >> "$copydir/etc/makepkg.conf"
+fi
+
+if [[ -n $PACKAGER ]]; then 
+	sed -i '/^PACKAGER=/d' "$copydir/etc/makepkg.conf"
+	echo "PACKAGER='${PACKAGER}'" >> "$copydir/etc/makepkg.conf"
+fi
+
+# Set target CARCH as it might be used within the PKGBUILD to select correct sources
+eval $(grep '^CARCH=' "$copydir/etc/makepkg.conf")
+export CARCH
+
+# Copy PKGBUILD and sources
+cp PKGBUILD "$copydir/build/"
+(
+	source PKGBUILD
+	for file in "${source[@]}"; do
+		file="${file%%::*}"
+		file="${file##*://*/}"
+		if [[ -f $file ]]; then
+			cp "$file" "$copydir/srcdest/"
+		elif [[ -f $SRCDEST/$file ]]; then
+			cp "$SRCDEST/$file" "$copydir/srcdest/"
+		fi
+	done
+
+	# Find all changelog and install files, even inside functions
+	for i in changelog install; do
+		sed -n "s/^[[:space:]]*$i=//p" PKGBUILD | while IFS= read -r file; do
+			# evaluate any bash variables used
+			eval file="$file"
+			[[ -f $file ]] && cp "$file" "$copydir/build/"
+		done
+	done
+)
+
+chown -R nobody "$copydir"/{build,pkgdest,srcdest}
+
+echo 'nobody ALL = NOPASSWD: /usr/bin/pacman' > "$copydir/etc/sudoers.d/nobody-pacman"
+chmod 440 "$copydir/etc/sudoers.d/nobody-pacman"
+
+# This is a little gross, but this way the script is recreated every time in the
+# working copy
+cat >"$copydir/chrootbuild" <<EOF
+#!/bin/bash
+export LANG=C
+export HOME=/build
+
+cd /build
+sudo -u nobody makepkg $makepkg_args || touch BUILD_FAILED
+
+[[ -f BUILD_FAILED ]] && exit 1
+
+if $run_namcap; then
+	pacman -S --needed --noconfirm namcap
+	namcap /build/PKGBUILD /pkgdest/*.pkg.tar.* > /build/namcap.log
+fi
+
+exit 0
+EOF
+chmod +x "$copydir/chrootbuild"
+
+if mkarchroot -r "/chrootbuild" "$copydir"; then
+	for pkgfile in "$copydir"/pkgdest/*.pkg.tar.*; do
+		if $add_to_db; then
+			mkdir -p "$copydir/repo"
+			pushd "$copydir/repo" >/dev/null
+			cp "$pkgfile" .
+			repo-add repo.db.tar.gz "${pkgfile##*/}"
+			popd >/dev/null
+		fi
+
+		mv "$pkgfile" "$PKGDEST"
+	done
+
+	for l in "$copydir"/build/{namcap,*-{build,check,package,package_*}}.log; do
+		[[ -f $l ]] && mv "$l" .
+	done
+else
+	# Just in case. We returned 1, make sure we fail
+	touch "$copydir/build/BUILD_FAILED"
+fi
+
+for f in "$copydir"/srcdest/*; do
+	mv "$f" "$SRCDEST"
+done
+
+if [[ -e $copydir/build/BUILD_FAILED ]]; then
+	echo "Build failed, check $copydir/build"
+	rm "$copydir/build/BUILD_FAILED"
+	exit 1
+fi