libredbdiff-with_init: Copy of libretools' version

On libretools' version, configuration files will be packaged so
initialize() will not be needed and removed. This function will
remain in parmanscripts' version of Libredbdiff.

1 files changed, 385 insertions, 0 deletions

diff --git a/libredbdiff-with_init b/libredbdiff-with_init
new file mode 100755
index 0000000..2bc8a5a
--- /dev/null
+++ b/libredbdiff-with_init
@@ -0,0 +1,385 @@
+#!/usr/bin/env bash
+name="Libredbdiff"
+
+# Copyright (C) 2014 Esteban Carnevale <alfplayer@mailoo.org>
+# Copyright (C) 2014 Luke Shumaker <lukeshu@sbcglobal.net>
+#
+# License: GNU GPLv3+
+#
+# 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/>.
+
+baseconfpath="/etc/libredbdiff"
+basedbpath="/var/lib/libredbdiff"
+
+conffile="$baseconfpath/pacman.conf.parabola"
+conffilearch="$baseconfpath/pacman.conf.archlinux"
+
+dbpath="$basedbpath/pacman.parabola"
+dbpatharch="$basedbpath/pacman.archlinux"
+
+mirrorlist="$baseconfpath/mirrorlist.parabola"
+mirrorlistarch="$baseconfpath/mirrorlist.archlinux"
+
+mirror='http://repo.parabola.nu/$repo/os/$arch'
+mirrorarch='http://mirrors.kernel.org/archlinux/$repo/os/$arch'
+
+repos="libre pcr libre-multilib nonprism"
+
+field_pkgname_parabola=30
+field_pkgname_arch=30
+
+
+. libremessages
+
+cmd="${0##*/}"
+
+arch_packages_tmp="/tmp/${cmd}.arch-packages"
+parabola_packages_tmp="/tmp/${cmd}.parabola-packages"
+
+field_pkgname_total="$((${field_pkgname_parabola} + ${field_pkgname_arch}))"
+printf_format="%s  %-${field_pkgname_parabola}s%-${field_pkgname_arch}s   %s | %s\n"
+printf_format_noarch="%s  %-${field_pkgname_total}s   %s\n"
+
+downloadfile() {
+	local outfile=$1
+	local url=$2
+	local mesg=("${@:3}")
+	if [[ ! -e $outfile ]] ; then
+		msg "${mesg[@]}"
+		if wget -q "$url" -O "$outfile"; then
+			return 255
+		else
+			die "Failed to download %q. Exiting." "$outfile"
+		fi
+	elif [[ $init ]]; then
+		warning "%q already exists. Skipping." "$outfile"
+	fi
+}
+
+enablerepo() {
+	repo="$1"
+	conffile_arg="$2"
+	msg2 "Enabling repo %q in %q" "$repo" "${conffile_arg}"
+	sed -i "s/\#\[$repo\]/[$repo]/" "${conffile_arg}"
+	sed -i "\/\[$repo\]/,+1 s/#Include/Include/" "${conffile_arg}"
+}
+
+createdir() {
+	local dir=$1
+	if [[ ! -e $dir ]] ; then
+		msg "Creating directory %q" "$dir"
+		mkdir -- "$1" || die "Failed to create directory %q. Exiting." "$dir"
+	elif [[ $init ]]; then
+		warning "%q already exists. Skipping." "$dir"
+	fi
+}
+
+setmirror() {
+	local distro="$1"
+	local mirror="$2"
+	local mirrorlist="$3"
+	if [[ $init ]] && [[ $mirror ]]; then
+		mirrorescaped="${mirror//./\\.}"
+		mirrorescaped="${mirrorescaped//\$/\\$}"
+		msg2 "Setting %s as the only enabled %s mirror." "${mirror}" "${distro}"
+		sed -i 's|^#\(Server = '"${mirrorescaped}"'\)$|\1|' "${mirrorlist}"
+	fi
+}
+
+filenotfound() {
+	local file=$1
+	if [[ ! -r $1 ]]; then
+		error "Could not read %q." "$file"
+		die "Nothing done. It may be necessary to run %q without \
+arguments as root to initialize %s." "$cmd" "$name"
+	fi
+}
+
+initialize() {
+	createdir "$baseconfpath"
+	createdir "$basedbpath"
+
+	downloadfile \
+		"${conffile}" \
+		"https://projects.parabola.nu/abslibre.git/plain/libre/pacman/pacman.conf.x86_64" \
+		"Downloading Parabola %q" \
+		pacman.conf
+	if [[ $? == 255 ]] ; then
+		msg2 "Setting DBPath in %q" "${conffile}"
+		sed -i "s|^#DBPath .*|DBPath = ${dbpath}|" "${conffile}"
+		enablerepo nonprism "${conffile}"
+		enablerepo pcr "${conffile}"
+		enablerepo libre-multilib "${conffile}"
+		enablerepo multilib "${conffile}"
+	fi
+
+	downloadfile \
+		"${conffilearch}" \
+		"https://projects.archlinux.org/svntogit/packages.git/plain/pacman/trunk/pacman.conf.x86_64" \
+		"Downloading Arch %q" \
+		pacman.conf
+	if [[ $? == 255 ]] ; then
+		msg2 "Setting DBPath in %q" "${conffilearch}"
+		sed -i "s|^#DBPath .*|DBPath = ${dbpatharch}|" "${conffilearch}"
+		msg2 "Setting Arch mirrorlist file in %q" "${conffilearch}"
+		sed -i "s|/etc/pacman\.d/mirrorlist$|$baseconfpath/mirrorlist.archlinux|" \
+			"${conffilearch}"
+		enablerepo multilib "${conffilearch}"
+	fi
+
+	downloadfile \
+		"${mirrorlist}" \
+		"https://repo.parabola.nu/mirrorlist.txt" \
+		"Downloading Parabola %q" \
+		mirrorlist
+	if [[ $? == 255 ]] ; then
+		sed -i 's|^Server|#Server|' "${mirrorlist}"
+		setmirror "Parabola" "$mirror" "$mirrorlist"
+	fi
+
+	downloadfile \
+		"${mirrorlistarch}" \
+		"https://projects.archlinux.org/svntogit/packages.git/plain/pacman-mirrorlist/trunk/mirrorlist" \
+		"Downloading Arch %q" \
+		mirrorlist
+	if [[ $? == 255 ]] ; then
+		setmirror "Arch" "$mirrorarch" "$mirrorlistarch"
+	fi
+}
+
+repo_test() {
+	for repo in ${repos} ; do
+		if [[ $repo == $1 ]] ; then
+			found=1
+			return 0
+		fi
+	done
+	if [[ $found != 1 ]] ; then
+		die "The specified Parabola repo \"%s\" cannot be compared. It's \
+not in the list of repos in the configuration variable \"repos\"." "$1"
+	fi
+}
+
+expac_version_test() {
+	if ! pkgname="$(pacman -Qoq expac 2> /dev/null)" ; then
+		die "The command expac could not be found installed. The package \
+pcr/expac-relative 4-2.parabola1 (or later) must be installed."
+	elif [[ $pkgname == expac-git ]] ; then
+		true
+	elif [[ $pkgname == expac-relative ]] ; then
+		expac_ver="$(expac %v expac-relative)"
+		if [[ $(vercmp "${expac_ver}" 4-2.parabola1) == -1 ]] ; then
+			die "The version of expac-relative installed on the system is \
+lower than needed."
+		fi
+	else
+		die "expac command must be provided by pcr/expac-relative version \
+4-2.parabola1 (or later). This package must be installed."
+	fi
+}
+
+compare_pkgs() {
+	local cmp
+	if [[ ${verarch[$pkgname]} ]] ; then
+		cmp=$(vercmp "${ver[$pkgname]}" "${verarch[$pkgname]}")
+		if [[ $cmp -lt 0 ]]; then
+			printf "${printf_format}" \
+				'=' \
+				"${pkgname}" \
+				"" \
+				"${ver[$pkgname]}" \
+				"${verarch[$pkgname]}"
+		fi
+	elif [[ ${provides[$pkgname]} ]]; then
+		for provide in "${provides[$pkgname]}"; do
+			if [[ ${verarch["$provide"]} ]]; then
+				cmp=$(vercmp "${ver[$pkgname]}" "${verarch[$provide]}")
+				if [[ $cmp -lt 0 ]]; then
+					printf "${printf_format}" \
+						'p' \
+						"${pkgname}" \
+						"${provide}" \
+						"${ver[$pkgname]}" \
+						"${verarch[$provide]}"
+				fi
+			fi
+		done
+	else
+		printf "${printf_format_noarch}" \
+			'o' \
+			"${pkgname}" \
+			"${ver[$pkgname]}"
+	fi
+}
+
+print_cmp() {
+	local repo="$1"
+	awk -F/ -v repo="$repo" \
+		'$1 == repo {print $2}' \
+		${parabola_packages_tmp} | \
+			while read -a line ; do
+				ver["${line[0]}"]="${line[1]}"
+				provides[${line[0]}]="${line[@]:2}"
+				pkgname=${line[0]}
+				compare_pkgs
+			done
+}
+
+usage() {
+	print "Usage: %q [-n|-h]" "$cmd"
+	print 'Show packages that need to be updated from Arch repositories.'
+	echo
+	prose "Compares packages in Parabola repositories. Packages from
+	       all configured Parabola repositories are compared. A Parabola
+	       repository name can be specified as argument to compare only
+	       packages in that repository."
+	prose "The default mode of operation is to download/update all necessary
+	       files for comparison, but not compare them.  Specify the \`-n\`
+	       flag to not download anything, but to compare already downloaded
+	       files."
+	echo
+	print 'Options:'
+	flag '-n' "Don't update anything, just compare already downloaded files."
+	flag '-h' 'Show this message'
+	echo
+	print "Output format:
+	       type_character  parabola_pkgname  (arch_pkgname)   parabola_pkgver - (arch_pkgver)"
+	echo
+	print "Type characters:
+	       =    Arch package with the same pkgname and greater pkgver was found
+	       p    Arch package with pkgname equal to a provide and greater pkgver was found
+	            In this case arch_pkgname is a provide of parabola_pkgname
+	       o    No Arch package with the same pkgname or with pkgname equal to a provide was found"
+}
+
+main() {
+	local UPDATE=1
+	local arg
+	local repo_arg
+
+	for arg in "$@"; do
+		case "$arg" in
+			-n|--noupdate)
+				UPDATE=0
+				;;
+			-h|--help)
+				usage
+				return 0
+				;;
+			*)
+				repo_test "$arg"
+				repo_arg="$arg"
+				break
+				;;
+		esac
+	done
+
+	if (( $UPDATE )) ; then
+		if [[ $EUID != 0 ]]; then
+			die "To initialize %s or update %s pacman \
+databases, %s must be run as root (without arguments). Nothing done." \
+				"$name" \
+				"$name" \
+				"$cmd"
+		fi
+
+		if ! [[ -e "${conffile}" && \
+			-e "${conffilearch}" && \
+			-e "${mirrorlist}" && \
+			-e "${mirrorlist}" ]]; then
+			warning "At least one %s configuration file is \
+missing." \
+				"${name}"
+			msg "Downloading and preparing missing \
+configuration files."
+			init=1
+		fi
+
+		createdir "$baseconfpath"
+		createdir "$basedbpath"
+
+		initialize
+
+		if ! [[ -d "$dbpath" && \
+			-d "$dbpatharch" ]]; then
+			warning "At least one %s pacman DB directory \
+is missing. Synchronizing %s DB files." "${name}" "${name}"
+		fi
+
+		createdir "$dbpath"
+		msg "Synchronizing %s pacman databases for Parabola" "$name"
+		pacman --config "${conffile}" -Sy || \
+			die "Failed to synchronize pacman database for Parabola. Exiting."
+
+		createdir "$dbpatharch"
+		msg "Synchronizing %s pacman databases for Arch" "$name"
+		pacman --config "${conffilearch}" -b "${dbpatharch}" -Sy || \
+			die "Failed to synchronize pacman database for Arch. Exiting."
+
+		msg "%s pacman databases are updated. %s is ready. Run %q -n to \
+print results." "$name" "$name" "$cmd"
+		return 0
+	else
+		filenotfound "${dbpath}"
+		filenotfound "${dbpatharch}"
+		filenotfound "${conffile}"
+		filenotfound "${conffilearch}"
+		filenotfound "${mirrorlist}"
+		filenotfound "${mirrorlistarch}"
+
+		unset provides ver verarch
+		declare -gA provides ver verarch
+
+		if ! [[ -d "$dbpath" && \
+			-d "$dbpatharch" ]]; then
+			die "At least one %s pacman DB directory \
+is missing. To update %s pacman databases, %s must be run as root. \
+Nothing done." \
+				"$name" \
+				"$name" \
+				"$cmd"
+		fi
+
+		expac_version_test
+
+		pacman --config "${conffilearch}" -Ss | \
+				grep -v '^ ' | \
+				awk -F/ '{print $2}' \
+			> ${arch_packages_tmp} || \
+			die "pacman command to get Arch \
+package data has failed. Exiting."
+		chmod 777 ${arch_packages_tmp}
+
+		while read -a line; do
+			verarch["${line[0]}"]="${line[1]}"
+		done < ${arch_packages_tmp}
+
+		expac --config "${conffile}" -S '%r/%n %v %S' \
+			> ${parabola_packages_tmp} || \
+			die "expac command to get Parabola \
+package data has failed. Exiting."
+		chmod 777 ${parabola_packages_tmp}
+
+		if [[ ${repo_arg} ]] ; then
+			print_cmp "${repo_arg}"
+		else
+			for repo in ${repos} ; do
+				print "[$repo]"
+				print_cmp "$repo"
+			done
+		fi
+	fi
+}
+
+main "$@"