From 43de5a1e0030b64adfda15bd9a59961fad834d72 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pjm@nac.net>
Date: Tue, 10 Jul 2012 15:29:36 -0400
Subject: Initial commit.

---
(limited to 'src/opkbootstrap.sh')

diff --git a/src/opkbootstrap.sh b/src/opkbootstrap.sh
new file mode 100755
index 0000000..3ad3c27
--- /dev/null
+++ b/src/opkbootstrap.sh
@@ -0,0 +1,285 @@
+#!@@SHELL@@
+#
+# opkbootstrap
+# src/opkbootstrap.sh
+# Main program script.
+#
+# Copyright (C) 2012 Patrick "P. J." McDermott
+#
+# 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 3 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/>.
+
+TARGET=                                 # set in main
+LISTS_DIR=/var/lib/opkg/lists
+PKGS_DIR=/var/cache/opkg/archives
+
+ARCH_MACHINE=                           # set in main
+ARCH_SYSTEM=                            # set in main
+PLAT_SYSTEM=                            # set in main
+
+PKGS_ESSENTIAL=                         # set in find_essential
+PKGS_ALL=                               # set in find_essential and find_depends
+PKGS_INCLUDE=                           # set in main
+PKGS_EXCLUDE=                           # set in main
+
+# main <target> <arch> <src> [<src>]...
+main()
+{
+	SCRIPT_NAME="${0}"
+
+	while getopts 'hVi:x:' opt; do
+		case "${opt}" in
+			h)
+				print_help
+				exit
+				;;
+			V)
+				print_version
+				exit
+				;;
+			i)
+				PKGS_INCLUDE="${PKGS_INCLUDE},${OPTARG}"
+				;;
+			x)
+				PKGS_EXCLUDE="${PKGS_EXCLUDE},${OPTARG}"
+				;;
+			?)
+				print_usage >&2
+				exit 1
+				;;
+		esac
+	done
+	shift $(($OPTIND - 1))
+
+	if [ ${#} -lt 4 ]; then
+		print_usage >&2
+		exit 1
+	fi
+
+	TARGET="${1}"
+	ARCH_MACHINE="${2%:*}"
+	ARCH_SYSTEM="${2#*:}"
+	PLAT_SYSTEM="${3}"
+	shift 3
+
+	set_paths
+
+	# Find packages.
+	for src; do
+		get_src_list ${src}
+	done
+	find_essential
+	find_depends
+
+	# Download packages.
+	get_pkgs
+
+	# Unpack packages ("first stage" installation in debootstrap terms).
+	unpack_pkgs
+
+	# Configure packages ("second stage" installation in debootstrap terms).
+	if [ "${ARCH_MACHINE}" = "${ARCH_SYSTEM}" ]; then
+		setup_chroot
+		configure_pkgs
+	else
+		printf 'Cross installation currently not supported.  Exiting...\n'
+		exit
+	fi
+}
+
+# print_usage
+print_usage()
+{
+	cat <<EOF
+Usage: ${SCRIPT_NAME} [OPTION]... <target> <arch> <plat> <src> [<src>]...
+EOF
+}
+
+# print_help
+print_help()
+{
+	print_usage
+
+	cat <<EOF
+Bootstrap the installation of a base system into a target directory.
+
+    -h              display this help and exit
+    -V              display version information and exit
+    -i A,B,C        includes specified packages in the base system
+    -x A,B,C        excludes specified packages from the base system
+EOF
+}
+
+# print_version
+print_version()
+{
+	cat <<EOF
+@@PACKAGE@@ @@VERSION@@
+Copyright (C) 2012 Patrick "P. J." McDermott
+License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law.
+
+Written by P. J. McDermott.
+EOF
+}
+
+# error <fmt> [<args>]...
+error()
+{
+	_msg="${1}"
+	shift
+	printf "Error: ${_msg}\n" ${@}
+	exit 2
+}
+
+# set_paths
+set_paths()
+{
+	TARGET=$(cd "${TARGET}" && pwd)
+	LISTS_DIR="${TARGET}/${LISTS_DIR}"
+	PKGS_DIR="${TARGET}/${PKGS_DIR}"
+}
+
+# get_src_list src|src/gz <name> <value> [<comp>]
+# get_src_list dist|dist/gz <name> <value> [<comp>]...
+get_src_list()
+{
+	case "${1}" in
+		src)
+			shift
+			get_pkg_src_list false ${@}
+			;;
+		src/gz)
+			shift
+			get_pkg_src_list true ${@}
+			;;
+		dist)
+			shift
+			get_dist_src_list false ${@}
+			;;
+		dist/gz)
+			shift
+			get_dist_src_list true ${@}
+			;;
+		*)
+			error 'Invalid source type "%s"' "${1}"
+			;;
+	esac
+}
+
+# get_pkg_src_list <gzip> <name> <value> [<comp>]
+get_pkg_src_list()
+{
+	if [ ${#} -ne 3 -a ${#} -ne 4 ]; then
+		error 'Malformed src configuration'
+	fi
+
+	_gzip=${1}
+	_name="${2}"
+	_value="${3}"
+	_comp="${4}"
+
+	_url="${_value}/${_comp}/Packages"
+
+	if ${_gzip}; then
+		wget -q -O - "${_url}.gz" | gzcat > "${LISTS_DIR}/${_name}"
+	else
+		wget -q -O "${LISTS_DIR}/${_name}" "${_url}"
+	fi
+}
+
+# get_dist_src_list <gzip> <name> <value> [<comp>]...
+get_dist_src_list()
+{
+	:
+}
+
+# find_essential
+find_essential()
+{
+	for _list in "${LISTS_DIR}/"*; do
+		_pkg=
+		_essential=false
+		while read _line; do
+			if [ -z "${line}" ]; then
+				if ${_essential}; then
+					PKGS_ESSENTIAL="${PKGS_ESSENTIAL} ${_pkg}"
+					PKGS_ALL="${PKGS_ALL} ${_pkg}"
+				fi
+				_pkg=
+				_essential=false
+				continue
+			fi
+			if [ "${_line#Package: }" != "${_line}" ]; then
+				_pkg="${_line#Package: }"
+				continue
+			fi
+			if [ "${_line}" = 'Essential: yes' ]; then
+				_essential=true
+				continue
+			fi
+			# TODO: Make sure Architecture is one of:
+			# all, ${ARCH_SYSTEM}, or ${PLAT_SYSTEM}
+		done < "${_list}"
+	done
+}
+
+# find_depends
+find_depends()
+{
+	:
+}
+
+# get_pkgs
+get_pkgs()
+{
+	:
+}
+
+# unpack_pkgs
+unpack_pkgs()
+{
+	cd "${TARGET}"
+
+	for _opk in "${PKGS_DIR}"/*; do
+		_pkg="${opk##*/}"
+		_pkg="${pkg%%_*}"
+
+		tar -xzOf "${_opk}" data.tar.gz | tar -xz
+
+		mkdir -p tmp/control
+		(cd tmp/control; tar -xzf "${_opk}" control.tar.gz)
+		for _script in conffiles md5sums preinst postinst prerm postrm; do
+			if [ -e tmp/control/${_file} ]; then
+				mv tmp/control/${_script} "${INFO_DIR}/${_pkg}.${_file}"
+			fi
+		done
+		# TODO: Generate pkg.list
+		rm -Rf tmp/control
+	done
+}
+
+# setup_chroot
+setup_chroot()
+{
+	:
+}
+
+# configure_pkgs
+configure_pkgs()
+{
+	:
+}
+
+main ${@}
--
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