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hackacad/usr/local/share/bastille/network.sh
tschettervictor b8d9eae21f Update network.sh
2025-03-06 16:28:45 -07:00

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#!/bin/sh
#
# Copyright (c) 2018-2024, 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_notify "Usage: bastille network [option(s)] TARGET [remove|add] INTERFACE [IP_ADDRESS]"
cat << EOF
Options:
-a | --auto Start/stop the jail(s) if required.
-B | --bridge Add a bridged VNET interface to an existing jail.
-C | --classic Add an interface to a classic (non-VNET) jail.
-M | --static-mac Generate a static MAC address for the interface.
-V | --vnet Add a VNET interface to an existing jail.
-v | --vlan VLANID Add interface with specified VLAN ID (VNET only).
-x | --debug Enable debug mode.
EOF
exit 1
}
# Handle options.
AUTO=0
BRIDGE_VNET_JAIL=0
CLASSIC_JAIL=0
STATIC_MAC=0
VNET_JAIL=0
VLAN_ID=""
while [ "$#" -gt 0 ]; do
case "${1}" in
-h|--help|help)
usage
;;
-a|--auto)
AUTO=1
shift
;;
-B|--bridge)
BRIDGE_VNET_JAIL=1
shift
;;
-C|--classic)
CLASSIC_JAIL=1
shift
;;
-M|--static-mac)
STATIC_MAC=1
shift
;;
-V|--vnet)
VNET_JAIL=1
shift
;;
-v|--vlan)
if echo "${2}" | grep -Eq '^[0-9]+$'; then
VLAN_ID="${2}"
else
error_exit "Not a valid VLAN ID: ${2}"
fi
shift 2
;;
-x|--debug)
enable_debug
shift
;;
-*)
for _o in $(echo ${1} 2>/dev/null | sed 's/-//g' | fold -w1); do
case ${_o} in
a) AUTO=1 ;;
B) BRIDGE_VNET_JAIL=1 ;;
C) CLASSIC_JAIL=1 ;;
M) STATIC_MAC=1 ;;
V) VNET_JAIL=1 ;;
x) enable_debug ;;
*) error_exit "Unknown Option: \"${1}\"" ;;
esac
done
shift
;;
*)
break
;;
esac
done
TARGET="${1}"
ACTION="${2}"
INTERFACE="${3}"
IP="${4}"
if [ "${ACTION}" = "add" ]; then
if { [ "${VNET_JAIL}" -eq 1 ] && [ "${BRIDGE_VNET_JAIL}" -eq 1 ]; } || \
{ [ "${VNET_JAIL}" -eq 1 ] && [ "${CLASSIC_JAIL}" -eq 1 ]; } || \
{ [ "${CLASSIC_JAIL}" -eq 1 ] && [ "${BRIDGE_VNET_JAIL}" -eq 1 ]; } then
error_notify "Error: Only one of [-B|--bridge], [-C|--classic] or [-V|--vnet] should be set."
usage
elif [ "${VNET_JAIL}" -eq 0 ] && [ "${BRIDGE_VNET_JAIL}" -eq 0 ] && [ "${CLASSIC_JAIL}" -eq 0 ]; then
error_notify "Error: [-C|--classic], [-B|--bridge] or [-V|--vnet] must be set."
usage
elif [ "${VNET_JAIL}" -eq 0 ] && [ "${BRIDGE_VNET_JAIL}" -eq 0 ] && [ "${VLAN_ID}" -eq 1 ]; then
error_notify "VLANs can only be used with VNET interfaces."
usage
fi
fi
if [ "$#" -lt 2 ] || [ "$#" -gt 4 ]; then
usage
fi
bastille_root_check
set_target_single "${TARGET}"
check_target_is_stopped "${TARGET}" || if [ "${AUTO}" -eq 1 ]; then
bastille stop "${TARGET}"
else
error_notify "Jail is running."
error_exit "Use [-a|--auto] to force stop the jail."
fi
validate_ip() {
IP6_ENABLE=0
local ip="${1}"
local ip6="$( echo "${ip}" 2>/dev/null | grep -E '^(([a-fA-F0-9:]+$)|([a-fA-F0-9:]+\/[0-9]{1,3}$)|SLAAC)' )"
if [ -n "${ip6}" ]; then
info "Valid: (${ip6})."
IP6_ENABLE=1
else
local IFS
if echo "${ip}" 2>/dev/null | grep -Eq '^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])(\/([0-9]|[1-2][0-9]|3[0-2]))?$'; then
TEST_IP=$(echo "${ip}" | cut -d / -f1)
IFS=.
set ${TEST_IP}
for quad in 1 2 3 4; do
if eval [ \$$quad -gt 255 ]; then
error_exit "Invalid: (${TEST_IP})"
fi
done
info "Valid: (${ip})."
else
error_exit "Invalid: (${ip})."
fi
fi
}
validate_netif() {
local _interface="${1}"
if ifconfig -l | grep -qwo ${_interface}; then
info "Valid: (${_interface})."
else
error_exit "Invalid: (${_interface})."
fi
}
validate_netconf() {
if [ -n "${bastille_network_loopback}" ] && [ -n "${bastille_network_shared}" ]; then
error_exit "Invalid network configuration."
fi
}
check_interface_added() {
local _jailname="${1}"
local _if="${2}"
local _jail_config="${bastille_jailsdir}/${_jailname}/jail.conf"
if grep -qo "${_if}" "${_jail_config}"; then
return 0
else
return 1
fi
}
add_interface() {
local _jailname="${1}"
local _if="${2}"
local _ip="${3}"
local _jail_config="${bastille_jailsdir}/${_jailname}/jail.conf"
local _jail_rc_config="${bastille_jailsdir}/${_jailname}/root/etc/rc.conf"
local _epair_if_count="$( (grep -Eos 'epair[0-9]+' ${bastille_jailsdir}/*/jail.conf; ifconfig | grep -Eo '(e[0-9]+a|epair[0-9]+a)' ) | sort -u | wc -l | awk '{print $1}')"
local _bastille_if_count="$(grep -Eos 'bastille[0-9]+' ${bastille_jailsdir}/*/jail.conf | sort -u | wc -l | awk '{print $1}')"
local _vnet_if_count="$(grep -Eo 'vnet[1-9]+' ${_jail_rc_config} | sort -u | wc -l | awk '{print $1}')"
local _if_vnet="vnet$((_vnet_if_count + 1))"
local epair_num_range=$((_epair_if_count + 1))
local bastille_num_range=$((_bastille_if_count + 1))
if [ "${BRIDGE_VNET_JAIL}" -eq 1 ]; then
if [ "${_epair_if_count}" -gt 0 ]; then
for _num in $(seq 0 "${epair_num_range}"); do
if ! grep -Eosq "epair${_num}" ${bastille_jailsdir}/*/jail.conf && ! ifconfig | grep -Eosq "(e${_num}a|epair${_num}a)"; then
if [ "$(echo -n "e${_num}a_${jail_name}" | awk '{print length}')" -lt 16 ]; then
local host_epair=e${_num}a_${_jailname}
local jail_epair=e${_num}b_${_jailname}
else
local host_epair=epair${_num}a
local jail_epair=epair${_num}b
fi
break
fi
done
else
if [ "$(echo -n "e0a_${_jailname}" | awk '{print length}')" -lt 16 ]; then
local _num=0
local host_epair=e${_num}a_${_jailname}
local jail_epair=e${_num}b_${_jailname}
else
local _num=0
local host_epair=epair${_num}a
local jail_epair=epair${_num}b
fi
fi
# Remove ending brace (it is added again with the netblock)
sed -i '' '/}/d' "${_jail_config}"
if [ "${STATIC_MAC}" -eq 1 ]; then
# Generate NETBLOCK with static MAC
generate_static_mac "${_jailname}" "${_if}"
cat << EOF >> "${_jail_config}"
## ${host_epair} interface
vnet.interface += ${jail_epair};
exec.prestart += "ifconfig epair${_num} create";
exec.prestart += "ifconfig ${_if} addm epair${_num}a";
exec.prestart += "ifconfig epair${_num}a up name ${host_epair}";
exec.prestart += "ifconfig epair${_num}b up name ${jail_epair}";
exec.prestart += "ifconfig ${host_epair} ether ${macaddr}a";
exec.prestart += "ifconfig ${jail_epair} ether ${macaddr}b";
exec.prestart += "ifconfig ${host_epair} description \"vnet host interface for Bastille jail ${_jailname}\"";
exec.poststop += "ifconfig ${_if} deletem ${host_epair}";
exec.poststop += "ifconfig ${host_epair} destroy";
}
EOF
else
# Generate NETBLOCK without static MAC
cat << EOF >> "${_jail_config}"
## ${host_epair} interface
vnet.interface += ${jail_epair};
exec.prestart += "ifconfig epair${_num} create";
exec.prestart += "ifconfig ${_if} addm epair${_num}a";
exec.prestart += "ifconfig epair${_num}a up name ${host_epair}";
exec.prestart += "ifconfig epair${_num}b up name ${jail_epair}";
exec.prestart += "ifconfig ${host_epair} description \"vnet host interface for Bastille jail ${_jailname}\"";
exec.poststop += "ifconfig ${_if} deletem ${host_epair}";
exec.poststop += "ifconfig ${host_epair} destroy";
}
EOF
fi
# Add config to /etc/rc.conf
sysrc -f "${_jail_rc_config}" ifconfig_${jail_epair}_name="${_if_vnet}"
# If 0.0.0.0 set DHCP, else set static IP address
if [ "${_ip}" = "0.0.0.0" ]; then
sysrc -f "${_jail_rc_config}" ifconfig_${_if_vnet}="SYNCDHCP"
else
sysrc -f "${_jail_rc_config}" ifconfig_${_if_vnet}=" inet ${_ip} "
fi
info "[${_jailname}]:"
echo "Added interface: \"${_if}\""
elif [ "${VNET_JAIL}" -eq 1 ]; then
for _num in $(seq 0 "${bastille_num_range}"); do
if ! grep -Eq "bastille${_num}" "${bastille_jailsdir}"/*/jail.conf; then
local bastille_epair="bastille${_num}"
break
fi
done
# Remove ending brace (it is added again with the netblock)
sed -i '' '/}/d' "${_jail_config}"
if [ "${STATIC_MAC}" -eq 1 ]; then
# Generate NETBLOCK with static MAC
generate_static_mac "${_jailname}" "${_if}"
cat << EOF >> "${_jail_config}"
## ${bastille_epair} interface
vnet.interface += e0b_${bastille_epair};
exec.prestart += "jib addm ${bastille_epair} ${_if}";
exec.prestart += "ifconfig e0a_${bastille_epair} ether ${macaddr}a";
exec.prestart += "ifconfig e0b_${bastille_epair} ether ${macaddr}b";
exec.prestart += "ifconfig e0a_${bastille_epair} description \"vnet host interface for Bastille jail ${_jailname}\"";
exec.poststop += "jib destroy ${bastille_epair}";
}
EOF
else
# Generate NETBLOCK without static MAC
cat << EOF >> "${_jail_config}"
## ${bastille_epair} interface
vnet.interface += e0b_${bastille_epair};
exec.prestart += "jib addm ${bastille_epair} ${_if}";
exec.prestart += "ifconfig e0a_${bastille_epair} description \"vnet host interface for Bastille jail ${_jailname}\"";
exec.poststop += "jib destroy ${bastille_epair}";
}
EOF
fi
# Add config to /etc/rc.conf
sysrc -f "${_jail_rc_config}" ifconfig_e0b_${bastille_epair}_name="${_if_vnet}"
# If 0.0.0.0 set DHCP, else set static IP address
if [ "${_ip}" = "0.0.0.0" ]; then
sysrc -f "${_jail_rc_config}" ifconfig_${_if_vnet}="SYNCDHCP"
else
sysrc -f "${_jail_rc_config}" ifconfig_${_if_vnet}=" inet ${_ip} "
fi
info "[${_jailname}]:"
echo "Added VNET interface: \"${_if}\""
elif [ "${CLASSIC_JAIL}" -eq 1 ]; then
if [ "${IP6_ENABLE}" -eq 1 ]; then
sed -i '' "s/interface = .*/&\n ip6.addr += ${_if}|${_ip};/" ${_jail_config}
else
sed -i '' "s/interface = .*/&\n ip4.addr += ${_if}|${_ip};/" ${_jail_config}
fi
fi
info "[${_jailname}]:"
echo "Added interface: \"${_if}\""
}
remove_interface() {
local _jailname="${1}"
local _if="${2}"
local _jail_config="${bastille_jailsdir}/${_jailname}/jail.conf"
# Skip next block in case of classic jail
if [ "$(bastille config ${TARGET} get vnet)" != "not set" ]; then
local _jail_rc_config="${bastille_jailsdir}/${_jailname}/root/etc/rc.conf"
if grep ${_if} ${_jail_config} | grep -Eo -m 1 'bastille[0-9]+'; then
local _if_bastille_num="$(grep ${_if} ${_jail_config} | grep -Eo -m 1 "bastille[0-9]+" | grep -Eo "[0-9]+")"
local _if_jail="e0b_bastille${_if_bastille_num}"
_if_type="bastille"
elif grep ${_if} ${_jail_config} | grep -Eo -m 1 "epair[0-9]+"; then
local _if_epair_num="$(grep ${_if} ${_jail_config} | grep -Eo -m 1 "epair[0-9]+" | grep -Eo "[0-9]+")"
if grep epair${_if_epair_num}b ${_jail_config} | grep -Eo -m 1 "e${_if_epair_num}b_${_jailname}"; then
local _if_jail="$(grep epair${_if_epair_num}b ${_jail_config} | grep -Eo -m 1 "e${_if_epair_num}b_${_jailname}")"
else
local _if_jail="epair${_if_epair_num}b"
fi
_if_type="epair"
else
error_exit "Could not find interface inside jail: \"${_if_jail}\""
fi
if grep -o "${_if_jail}" ${_jail_config}; then
local _if_vnet="$(grep ${_if_jail} ${_jail_rc_config} | grep -Eo 'vnet[0-9]+')"
else
error_exit "Interface not found: ${_if_jail}"
fi
# Do not allow removing default vnet0 interface
if [ "${_if_vnet}" = "vnet0" ]; then
error_exit "Default interface cannot be removed."
fi
# Avoid removing entire file contents if variables aren't set for some reason
if [ -z "${_if_jail}" ]; then
error_exit "Error: Could not find specifed interface."
fi
# Remove interface from /etc/rc.conf
if [ -n "${_if_vnet}" ] && echo ${_if_vnet} 2>/dev/null | grep -Eo 'vnet[0-9]+'; then
sed -i '' "/.*${_if_vnet}.*/d" "${_jail_rc_config}"
else
error_continue "Failed to remove interface from /etc/rc.conf"
fi
# Remove VNET interface from jail.conf (VNET)
if [ -n "${_if_jail}" ]; then
if [ "${_if_type}" = "epair" ]; then
sed -i '' "/.*epair${_if_epair_num}.*/d" "${_jail_config}"
sed -i '' "/.*e${_if_epair_num}a_${_jailname}.*/d" "${_jail_config}"
sed -i '' "/.*e${_if_epair_num}b_${_jailname}.*/d" "${_jail_config}"
elif [ "${_if_type}" = "bastille" ]; then
sed -i '' "/.*${_if_jail}.*/d" "${_jail_config}"
sed -i '' "/.*bastille${_if_bastille_num}.*/d" "${_jail_config}"
fi
else
error_exit "Failed to remove interface from jail.conf"
fi
else
# Remove interface from jail.conf (non-VNET)
if [ -n "${_if}" ]; then
if grep ${_if} ${_jail_config} 2>/dev/null | grep -qo " = "; then
error_exit "Default interface cannot be removed."
else
sed -i '' "/.*${_if}.*/d" "${_jail_config}"
fi
else
error_exit "Failed to remove interface from jail.conf"
fi
fi
info "[${_jailname}]:"
echo "Removed interface: \"${_if}\""
}
add_vlan() {
local _jailname="${1}"
local _interface="${2}"
local _ip="${3}"
local _vlan_id="${4}"
local _jail_config="${bastille_jailsdir}/${_jailname}/jail.conf"
local _jail_rc_config="${bastille_jailsdir}/${_jailname}/root/etc/rc.conf"
if [ "${VNET_JAIL}" -eq 1 ]; then
local _jail_epair_num="$(grep ${_interface} ${_jail_config} | grep -Eo "bastille[0-9]+" | grep -Eo "[0-9]+")"
local _jail_vnet="$(grep "e0b_bastille${_jail_epair_num}_name" ${_jail_rc_config} | grep -Eo "vnet[0-9]+" | grep -Eo "[0-9]+")"
elif [ "${BRIDGE_VNET_JAIL}" -eq 1 ]; then
local _jail_epair_num="$(grep ${_interface} ${_jail_config} | grep -Eo "epair[0-9]+" | grep -Eo "[0-9]+")"
local _jail_vnet="$(grep "e.*${_jail_epair_num}b.*_name" ${_jail_rc_config} | grep -Eo "vnet[0-9]+" | grep -Eo "[0-9]+")"
fi
if grep -Eq "ifconfig_${_jail_vnet}_${_vlan_id}" "${bastille_jailsdir}/${_jailname}/root/etc/rc.conf"; then
error_exit "VLAN has already been added: VLAN ${_vlan_id}"
else
bastille template "${_jailname}" ${bastille_template_vlan} --arg VLANID="${_vlan_id}" --arg IFCONFIG="inet ${_ip}" --arg JAIL_VNET="${_jail_vnet}"
fi
info "[${_jailname}]:"
echo "Added VLAN ${_vlan_id} to interface: \"${_jail_vnet}\""
}
case "${ACTION}" in
add)
validate_netconf
validate_netif "${INTERFACE}"
if check_interface_added "${TARGET}" "${INTERFACE}" && [ -z "${VLAN_ID}" ]; then
error_exit "Interface is already added: \"${INTERFACE}\""
elif { [ "${VNET_JAIL}" -eq 1 ] || [ "${BRIDGE_VNET_JAIL}" -eq 1 ]; } && [ -n "${VLAN_ID}" ]; then
add_vlan "{TARGET}" "${INTERFACE}" "${IP}" "${VLAN_ID}"
fi
if [ -z "${IP}" ] || [ "${IP}" = "0.0.0.0" ]; then
IP="SYNCDHCP"
else
validate_ip "${IP}"
fi
if [ "${VNET_JAIL}" -eq 1 ]; then
if ifconfig -g bridge | grep -owq "${INTERFACE}"; then
error_exit "\"${INTERFACE}\" is a bridge interface."
else
add_interface "${TARGET}" "${INTERFACE}" "${IP}"
if [ -n "${VLAN_ID}" ]; then
add_vlan "${TARGET}" "${INTERFACE}" "${IP}" "${VLAN_ID}"
fi
if [ "${AUTO}" -eq 1 ]; then
bastille start "${TARGET}"
fi
fi
elif [ "${BRIDGE_VNET_JAIL}" -eq 1 ]; then
if ! ifconfig -g bridge | grep -owq "${INTERFACE}"; then
error_exit "\"${INTERFACE}\" is not a bridge interface."
else
add_interface "${TARGET}" "${INTERFACE}" "${IP}"
if [ -n "${VLAN_ID}" ]; then
add_vlan "${TARGET}" "${INTERFACE}" "${IP}" "${VLAN_ID}"
fi
if [ "${AUTO}" -eq 1 ]; then
bastille start "${TARGET}"
fi
fi
elif [ "${CLASSIC_JAIL}" -eq 1 ]; then
if [ "$(bastille config ${TARGET} get vnet)" != "not set" ]; then
error_exit "Error: ${TARGET} is a VNET jail."
else
add_interface "${TARGET}" "${INTERFACE}" "${IP}"
if [ "${AUTO}" -eq 1 ]; then
bastille start "${TARGET}"
fi
fi
fi
;;
remove|delete)
check_interface_added "${TARGET}" "${INTERFACE}" || error_exit "Interface not found in jail.conf: \"${INTERFACE}\""
validate_netif "${INTERFACE}"
if ! grep -q "${INTERFACE}" ${bastille_jailsdir}/${TARGET}/jail.conf; then
error_exit "Interface not found in jail.conf: \"${INTERFACE}\""
else
remove_interface "${TARGET}" "${INTERFACE}"
if [ "${AUTO}" -eq 1 ]; then
bastille start "${TARGET}"
fi
fi
;;
*)
error_exit "Only [add|remove] are supported."
;;
esac
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