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#!/bin/sh
#
# byobu-reconnect-sockets - source this file to re-establish
# GPG_AGENT_INFO and DBUS_SESSION_BUS_ADDRESS,
# useful when reconnecting to an existing
# byobu session.
#
# Copyright (C) 2009 Canonical Ltd.
# Copyright (C) 2012-2014 Dustin Kirkland <kirkland@byobu.org>
#
# Authors: Dustin Kirkland <kirkland@byobu.org>
# Ryan C. Thompson <rct@thompsonclan.org>
#
# 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 3 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.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
PKG="byobu"
[ -r "$HOME/.byoburc" ] && . "$HOME/.byoburc"
[ -z "${BYOBU_PREFIX}" ] && export BYOBU_PREFIX="/usr" || export BYOBU_PREFIX
. "${BYOBU_PREFIX}/lib/${PKG}/include/common"
case "$-" in
*i*)
# no-op
;;
*)
echo 2>&1
echo "ERROR: You must source this file, rather than execute it." 2>&1
echo " . $0" 2>&1
echo 2>&1
exit 1
;;
esac
export_and_send () {
var="$1"
value="$(eval "echo \$$var")"
export "$var"
case $BYOBU_BACKEND in
tmux)
tmux setenv "$var" "$value"
;;
screen)
screen -X setenv "$var" "$value"
;;
esac
}
screen_update () {
# Ensure that screen's environment variables/values get propagated here
# Enable word splitting for zsh:
[ "x$ZSH_VERSION" != x ] && setopt local_options sh_word_split
tempfile=$(mktemp -q ${BYOBU_RUN_DIR}/sockets-XXXXXXXX) && {
for var in $VARS_TO_UPDATE; do
screen sh -c "echo export $var=\$$var >> \"$tempfile\""
done
. "$tempfile"
rm -f "$tempfile"
}
}
tmux_update () {
# Ensure that tmux's environment variables/values get propagated here
# Enable word splitting for zsh:
[ "x$ZSH_VERSION" != x ] && setopt local_options sh_word_split
for var in $VARS_TO_UPDATE; do
expr="$(tmux showenv | grep "^$var=")"
if [ -n "$expr" ]; then
export "$expr"
fi
done
}
# Pull environment variables/values from backend and update/export here
VARS_TO_UPDATE="DISPLAY DBUS_SESSION_BUS_ADDRESS SESSION_MANAGER GPG_AGENT_INFO XDG_SESSION_COOKIE XDG_SESSION_PATH GNOME_KEYRING_CONTROL GNOME_KEYRING_PID GPG_AGENT_INFO SSH_ASKPASS SSH_AUTH_SOCK SSH_AGENT_PID WINDOWID UPSTART_JOB UPSTART_EVENTS UPSTART_SESSION UPSTART_INSTANCE"
case $BYOBU_BACKEND in
tmux)
tmux_update
;;
screen)
screen_update
;;
esac
# Establish gpg-agent socket, helps when reconnecting to a detached session
newest "$HOME/.gnupg/gpg-agent-info-*" && . "$_RET" && export_and_send GPG_AGENT_INFO
# Reconnect dbus, source the most recently touched session-bus
# Sorry, ls -t is needed here, to sort by time
newest "$HOME/.dbus/session-bus/*" && . "$_RET"
[ -r "$BYOBU_RUN_DIR/sockets" ] && . "$BYOBU_RUN_DIR/sockets"
export_and_send DBUS_SESSION_BUS_ADDRESS
export_and_send SESSION_MANAGER
# vi: syntax=sh ts=4 noexpandtab
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