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# Copyright © Sébastien Luttringer
#
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

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PKG_HOSTS=('seblu@white.seblu.net' 'seblu@white.h.seblu.net' 'seblu@white.v.seblu.net')
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PKG_BASE='packages'
PKG_REGEX=''
ARCH_REGEX="($(uname -m)|any)"
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SSH_OPTIONS=('-oStrictHostKeyChecking=no' '-oUserKnownHostsFile=/dev/null')
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	echo "usage: ${0##*/} [options] <list|get|install> [PKG_REGEX]" >&2
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	echo 'options:' >&2
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	echo "   -h: host address (current: ${PKG_HOSTS[*]})" >&2
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	echo "   -b: base path (current: $PKG_BASE)" >&2
	echo "   -a: arch regex (current: $ARCH_REGEX)" >&2
sshinit() {
	# default ssh program
	SSH=ssh
	SCP=scp
	if [[ -n $SSH_AUTH_SOCK ]] && ssh-add -l &>/dev/null; then
		# we using ssh-agent
		true
	elif type -P sshpass &>/dev/null; then
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		printf "%s 's password: " "$PKG_HOST"
		read -rs SSHPASS
		echo
		if [[ -z "$SSHPASS" ]]; then
			echo 'Empty pass, sshpass not needed'
			return
		fi
		export SSHPASS
		SSH='sshpass -e ssh'
		SCP='sshpass -e scp'
	else
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		echo 'Nor ssh-agent, nor sshpass detected. You wil tap your pass more than twice.'
while getopts 'h:b:a:' opt; do
	case $opt in
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		a) ARCH_REGEX=$OPTARG;;
		b) PKG_BASE=$OPTARG;;
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		h) PKG_HOSTS=$OPTARG;;
		*) usage;;
	esac
done
shift $((OPTIND - 1));

(( $# >= 1 )) || usage

case $1 in
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	list|get|install) action="$1"; shift;;
	*) action='get';;
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PKG_REGEX="$1"
list_tmp=$(mktemp)

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for PKG_HOST in "${PKG_HOSTS[@]}"; do
	echo "Connection to $PKG_HOST"

	sshinit

	$SSH "${SSH_OPTIONS[@]}" "$PKG_HOST" "find '$PKG_BASE' -type f \
	-regextype posix-egrep -regex '.*/$PKG_REGEX.*-$ARCH_REGEX.pkg\.tar\.xz'" \
	</dev/null >"$list_tmp" 2>/dev/null

	if [[ -s "$list_tmp" || $? -eq 0 ]]; then
		break
	else
		echo 'Connection failed or return an unexpected value'
	fi
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if [[ -s "$list_tmp" ]]; then
	exec 3<>"$list_tmp"
	while read -u 3 -r line; do
		[[ $line ]] || continue
	case $action in
		list)
			echo "$line"
			;;
		get)
			[[ -f $(basename $line) ]] &&
				echo "==> $(basename $line): already exists. skipped!" && continue
			$SCP "${SSH_OPTIONS[@]}" "$PKG_HOST:$line" .
			;;
		install)
			(( EUID == 0 )) && pacman='pacman' || pacman='sudo pacman'
			pkg_tmp=$(mktemp)
			$SCP "${SSH_OPTIONS[@]}" "$PKG_HOST:$line" "$pkg_tmp" && $pacman -U "$pkg_tmp"
			rm -f "$pkg_tmp"
			;;
		esac
	done
else
	echo 'No match found'
fi

rm -f "$list_tmp"

# vim:set ts=2 sw=2 ft=sh noet: