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https://github.com/hackacad/bastille.git
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394 lines
14 KiB
Bash
394 lines
14 KiB
Bash
#!/bin/sh
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#
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# Copyright (c) 2018-2022, Christer Edwards <christer.edwards@gmail.com>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice, this
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# list of conditions and the following disclaimer.
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#
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# * Neither the name of the copyright holder nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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. /usr/local/share/bastille/common.sh
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. /usr/local/etc/bastille/bastille.conf
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bastille_usage() {
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error_exit "Usage: bastille template TARGET|--convert project/template"
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}
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post_command_hook() {
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_jail=$1
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_cmd=$2
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_args=$3
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case $_cmd in
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rdr)
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echo -e ${_args}
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esac
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}
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get_arg_name() {
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echo "${1}" | sed -E 's/=.*//'
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}
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parse_arg_value() {
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# Parses the value after = and then escapes back/forward slashes and single quotes in it. -- cwells
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echo "${1}" | sed -E 's/[^=]+=?//' | sed -e 's/\\/\\\\/g' -e 's/\//\\\//g' -e 's/'\''/'\''\\'\'\''/g'
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}
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get_arg_value() {
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_name_value_pair="${1}"
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shift
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_arg_name="$(get_arg_name "${_name_value_pair}")"
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# Remaining arguments in $@ are the script arguments, which take precedence. -- cwells
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for _script_arg in "$@"; do
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case ${_script_arg} in
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--arg)
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# Parse whatever is next. -- cwells
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_next_arg='true' ;;
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*)
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if [ "${_next_arg}" = 'true' ]; then # This is the parameter after --arg. -- cwells
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_next_arg=''
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if [ "$(get_arg_name "${_script_arg}")" = "${_arg_name}" ]; then
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parse_arg_value "${_script_arg}"
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return
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fi
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fi
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;;
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esac
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done
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# Check the ARG_FILE if one was provided. --cwells
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if [ -n "${ARG_FILE}" ]; then
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# To prevent a false empty value, only parse the value if this argument exists in the file. -- cwells
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if grep "^${_arg_name}=" "${ARG_FILE}" > /dev/null 2>&1; then
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parse_arg_value "$(grep "^${_arg_name}=" "${ARG_FILE}")"
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return
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fi
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fi
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# Return the default value, which may be empty, from the name=value pair. -- cwells
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parse_arg_value "${_name_value_pair}"
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}
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render() {
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_file_path="${1}/${2}"
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if [ -d "${_file_path}" ]; then # Recursively render every file in this directory. -- cwells
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echo "Rendering Directory: ${_file_path}"
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find "${_file_path}" \( -type d -name .git -prune \) -o -type f
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find "${_file_path}" \( -type d -name .git -prune \) -o -type f -print0 | $(eval "xargs -0 sed -i '' ${ARG_REPLACEMENTS}")
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elif [ -f "${_file_path}" ]; then
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echo "Rendering File: ${_file_path}"
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eval "sed -i '' ${ARG_REPLACEMENTS} '${_file_path}'"
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else
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warn "Path not found for render: ${2}"
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fi
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}
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# Handle special-case commands first.
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case "$1" in
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help|-h|--help)
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bastille_usage
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;;
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esac
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if [ $# -lt 1 ]; then
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bastille_usage
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fi
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bastille_root_check
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## global variables
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TEMPLATE="${1}"
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bastille_template=${bastille_templatesdir}/${TEMPLATE}
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if [ -z "${HOOKS}" ]; then
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HOOKS='LIMITS INCLUDE PRE FSTAB PF PKG OVERLAY CONFIG SYSRC SERVICE CMD RENDER'
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fi
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# Special case conversion of hook-style template files into a Bastillefile. -- cwells
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if [ "${TARGET}" = '--convert' ]; then
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if [ -d "${TEMPLATE}" ]; then # A relative path was provided. -- cwells
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cd "${TEMPLATE}"
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elif [ -d "${bastille_template}" ]; then
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cd "${bastille_template}"
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else
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error_exit "Template not found: ${TEMPLATE}"
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fi
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echo "Converting template: ${TEMPLATE}"
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HOOKS="ARG ${HOOKS}"
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for _hook in ${HOOKS}; do
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if [ -s "${_hook}" ]; then
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# Default command is the hook name and default args are the line from the file. -- cwells
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_cmd="${_hook}"
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_args_template='${_line}'
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# Replace old hook names with Bastille command names. -- cwells
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case ${_hook} in
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CONFIG|OVERLAY)
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_cmd='CP'
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_args_template='${_line} /'
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;;
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FSTAB)
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_cmd='MOUNT' ;;
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PF)
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_cmd='RDR' ;;
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PRE)
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_cmd='CMD' ;;
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esac
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while read _line; do
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if [ -z "${_line}" ]; then
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continue
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fi
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eval "_args=\"${_args_template}\""
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echo "${_cmd} ${_args}" >> Bastillefile
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done < "${_hook}"
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echo '' >> Bastillefile
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rm "${_hook}"
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fi
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done
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info "Template converted: ${TEMPLATE}"
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exit 0
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fi
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case ${TEMPLATE} in
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http?://*/*/*)
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TEMPLATE_DIR=$(echo "${TEMPLATE}" | awk -F / '{ print $4 "/" $5 }')
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if [ ! -d "${bastille_templatesdir}/${TEMPLATE_DIR}" ]; then
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info "Bootstrapping ${TEMPLATE}..."
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if ! bastille bootstrap "${TEMPLATE}"; then
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error_exit "Failed to bootstrap template: ${TEMPLATE}"
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fi
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fi
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TEMPLATE="${TEMPLATE_DIR}"
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bastille_template=${bastille_templatesdir}/${TEMPLATE}
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;;
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*/*)
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if [ ! -d "${bastille_templatesdir}/${TEMPLATE}" ]; then
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if [ ! -d ${TEMPLATE} ]; then
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error_exit "${TEMPLATE} not found."
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else
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bastille_template=${TEMPLATE}
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fi
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fi
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;;
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*)
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error_exit "Template name/URL not recognized."
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esac
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if [ -z "${JAILS}" ]; then
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error_exit "Container ${TARGET} is not running."
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fi
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# Check for an --arg-file parameter. -- cwells
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for _script_arg in "$@"; do
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case ${_script_arg} in
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--arg-file)
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# Parse whatever is next. -- cwells
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_next_arg='true' ;;
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*)
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if [ "${_next_arg}" = 'true' ]; then # This is the parameter after --arg-file. -- cwells
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_next_arg=''
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ARG_FILE="${_script_arg}"
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break
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fi
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;;
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esac
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done
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if [ -n "${ARG_FILE}" ] && [ ! -f "${ARG_FILE}" ]; then
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error_exit "File not found: ${ARG_FILE}"
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fi
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for _jail in ${JAILS}; do
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info "[${_jail}]:"
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info "Applying template: ${TEMPLATE}..."
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## jail-specific variables.
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bastille_jail_path=$(/usr/sbin/jls -j "${_jail}" path)
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if [ "$(bastille config $TARGET get vnet)" != 'enabled' ]; then
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_jail_ip=$(/usr/sbin/jls -j "${_jail}" ip4.addr 2>/dev/null)
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_jail_ip6=$(/usr/sbin/jls -j "${_jail}" ip6.addr 2>/dev/null)
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if [ -z "${_jail_ip}" -o "${_jail_ip}" = "-" ]; then
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error_notify "Jail IP not found: ${_jail}"
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_jail_ip='' # In case it was -. -- cwells
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fi
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fi
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## TARGET
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if [ -s "${bastille_template}/TARGET" ]; then
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if grep -qw "${_jail}" "${bastille_template}/TARGET"; then
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info "TARGET: !${_jail}."
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echo
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continue
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fi
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if ! grep -Eq "(^|\b)(${_jail}|ALL)($|\b)" "${bastille_template}/TARGET"; then
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info "TARGET: ?${_jail}."
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echo
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continue
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fi
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fi
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# Build a list of sed commands like this: -e 's/${username}/root/g' -e 's/${domain}/example.com/g'
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# Values provided by default (without being defined by the user) are listed here. -- cwells
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ARG_REPLACEMENTS="-e 's/\${JAIL_IP}/${_jail_ip}/g' -e 's/\${JAIL_IP6}/${_jail_ip6}/g' -e 's/\${JAIL_NAME}/${_jail}/g'"
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# This is parsed outside the HOOKS loop so an ARG file can be used with a Bastillefile. -- cwells
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if [ -s "${bastille_template}/ARG" ]; then
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while read _line; do
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if [ -z "${_line}" ]; then
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continue
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fi
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_arg_name=$(get_arg_name "${_line}")
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_arg_value=$(get_arg_value "${_line}" "$@")
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if [ -z "${_arg_value}" ]; then
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warn "No value provided for arg: ${_arg_name}"
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fi
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ARG_REPLACEMENTS="${ARG_REPLACEMENTS} -e 's/\${${_arg_name}}/${_arg_value}/g'"
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done < "${bastille_template}/ARG"
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fi
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if [ -s "${bastille_template}/Bastillefile" ]; then
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# Ignore blank lines and comments. -- cwells
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SCRIPT=$(grep -v '^[[:blank:]]*$' "${bastille_template}/Bastillefile" | grep -v '^[[:blank:]]*#')
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# Use a newline as the separator. -- cwells
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IFS='
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'
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set -f
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for _line in ${SCRIPT}; do
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# First word converted to lowercase is the Bastille command. -- cwells
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_cmd=$(echo "${_line}" | awk '{print tolower($1);}')
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# Rest of the line with "arg" variables replaced will be the arguments. -- cwells
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_args=$(echo "${_line}" | awk '{$1=""; sub(/^ */, ""); print;}' | eval "sed ${ARG_REPLACEMENTS}")
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# Apply overrides for commands/aliases and arguments. -- cwells
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case $_cmd in
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arg) # This is a template argument definition. -- cwells
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_arg_name=$(get_arg_name "${_args}")
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_arg_value=$(get_arg_value "${_args}" "$@")
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if [ -z "${_arg_value}" ]; then
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warn "No value provided for arg: ${_arg_name}"
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fi
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# Build a list of sed commands like this: -e 's/${username}/root/g' -e 's/${domain}/example.com/g'
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ARG_REPLACEMENTS="${ARG_REPLACEMENTS} -e 's/\${${_arg_name}}/${_arg_value}/g'"
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continue
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;;
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cmd)
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# Escape single-quotes in the command being executed. -- cwells
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_args=$(echo "${_args}" | sed "s/'/'\\\\''/g")
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# Allow redirection within the jail. -- cwells
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_args="sh -c '${_args}'"
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;;
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cp|copy)
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_cmd='cp'
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# Convert relative "from" path into absolute path inside the template directory. -- cwells
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if [ "${_args%${_args#?}}" != '/' ] && [ "${_args%${_args#??}}" != '"/' ]; then
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_args="${bastille_template}/${_args}"
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fi
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;;
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fstab|mount)
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_cmd='mount' ;;
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include)
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_cmd='template' ;;
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overlay)
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_cmd='cp'
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_args="${bastille_template}/${_args} /"
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;;
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pkg)
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_args="install -y ${_args}" ;;
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render) # This is a path to one or more files needing arguments replaced by values. -- cwells
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render "${bastille_jail_path}" "${_args}"
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continue
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;;
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esac
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if ! eval "bastille ${_cmd} ${_jail} ${_args}"; then
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set +f
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unset IFS
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error_exit "Failed to execute command: ${_cmd}"
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fi
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post_command_hook "${_jail}" "${_cmd}" "${_args}"
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done
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set +f
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unset IFS
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fi
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for _hook in ${HOOKS}; do
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if [ -s "${bastille_template}/${_hook}" ]; then
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# Default command is the lowercase hook name and default args are the line from the file. -- cwells
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_cmd=$(echo "${_hook}" | awk '{print tolower($1);}')
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_args_template='${_line}'
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# Override default command/args for some hooks. -- cwells
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case ${_hook} in
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CONFIG)
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warn "CONFIG deprecated; rename to OVERLAY."
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_args_template='${bastille_template}/${_line} /'
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_cmd='cp' ;;
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FSTAB)
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_cmd='mount' ;;
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INCLUDE)
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_cmd='template' ;;
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OVERLAY)
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_args_template='${bastille_template}/${_line} /'
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_cmd='cp' ;;
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PF)
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info "NOT YET IMPLEMENTED."
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continue ;;
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PRE)
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_cmd='cmd' ;;
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RENDER) # This is a path to one or more files needing arguments replaced by values. -- cwells
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render "${bastille_jail_path}" "${_line}"
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continue
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;;
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esac
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info "[${_jail}]:${_hook} -- START"
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if [ "${_hook}" = 'CMD' ] || [ "${_hook}" = 'PRE' ]; then
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bastille cmd "${_jail}" /bin/sh < "${bastille_template}/${_hook}" || exit 1
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elif [ "${_hook}" = 'PKG' ]; then
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bastille pkg "${_jail}" install -y $(cat "${bastille_template}/PKG") || exit 1
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bastille pkg "${_jail}" audit -F
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else
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while read _line; do
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if [ -z "${_line}" ]; then
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continue
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fi
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# Replace "arg" variables in this line with the provided values. -- cwells
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_line=$(echo "${_line}" | eval "sed ${ARG_REPLACEMENTS}")
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eval "_args=\"${_args_template}\""
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bastille "${_cmd}" "${_jail}" ${_args} || exit 1
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done < "${bastille_template}/${_hook}"
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fi
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info "[${_jail}]:${_hook} -- END"
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echo
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fi
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done
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info "Template applied: ${TEMPLATE}"
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echo
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done
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