Add rcp (reverse copy) command

Allows to copy files from a single jail back to the host.
Usuful when building jails ad-hoc, to get back to the host files you create directly inside the jail.

usr/local/share/bastille/rcp.sh

@@ -0,0 +1,77 @@
+#!/bin/sh
+#
+# Copyright (c) 2018-2022, Christer Edwards <christer.edwards@gmail.com>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# * Redistributions of source code must retain the above copyright notice, this
+#   list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright notice,
+#   this list of conditions and the following disclaimer in the documentation
+#   and/or other materials provided with the distribution.
+#
+# * Neither the name of the copyright holder nor the names of its
+#   contributors may be used to endorse or promote products derived from
+#   this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+. /usr/local/share/bastille/common.sh
+. /usr/local/etc/bastille/bastille.conf
+
+usage() {
+    error_exit "Usage: bastille rcp [OPTION] TARGET CONTAINER_PATH HOST_PATH"
+}
+
+CPSOURCE="${1}"
+CPDEST="${2}"
+
+# Handle special-case commands first.
+case "$1" in
+help|-h|--help)
+    usage
+    ;;
+-q|--quiet)
+    OPTION="${1}"
+    CPSOURCE="${2}"
+    CPDEST="${3}"
+    ;;
+esac
+
+if [ $# -ne 2 ]; then
+    usage
+fi
+
+if [ "${TARGET}" = "ALL" ]; then
+    usage
+fi
+
+case "${OPTION}" in
+    -q|--quiet)
+        OPTION="-a"
+        ;;
+    *)
+        OPTION="-av"
+        ;;
+esac
+
+for _jail in ${JAILS}; do
+    info "[${_jail}]:"
+    bastille_jail_path="${bastille_jailsdir}/${_jail}/root"
+    cp "${OPTION}" "${bastille_jail_path}/${CPSOURCE}" "${CPDEST}"
+    RETURN="$?"
+    echo
+    return "${RETURN}"
+done