1484 lines
47 KiB
Bash
1484 lines
47 KiB
Bash
#!/usr/bin/env ksh
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#******************************************************************************
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# @(#) manage_ssh.sh
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#******************************************************************************
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# @(#) Copyright (C) 2014 by KUDOS BVBA <info@kudos.be>. All rights reserved.
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#
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# This program is a free software; you can redistribute it and/or modify
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# it under the same terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details
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#******************************************************************************
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#
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# DOCUMENTATION (MAIN)
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# -----------------------------------------------------------------------------
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# @(#) MAIN: manage_ssh.sh
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# DOES: performs basic functions for SSH controls: update SSH keys locally or
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# remote, create SSH key fingerprints or distribute the SSH controls files
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# EXPECTS: (see --help for more options)
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# REQUIRES: check_config(), check_logging(), check_params(), check_root_user(),
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# check_setup(), check_syntax(), count_fields(), die(), display_usage(),
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# distribute2host(), do_cleanup(), fix2host(), get_linux_version(),
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# log(), logc(), resolve_host(), sftp_file(), update2host(),
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# update_fingerprints(), wait_for_children(), warn()
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# For other pre-requisites see the documentation in display_usage()
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#
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# @(#) HISTORY:
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# @(#) 2014-12-16: initial version (VRF 1.0.0) [Patrick Van der Veken]
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# @(#) 2014-12-20: updated SELinux contexts (VRF 1.0.1) [Patrick Van der Veken]
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# @(#) 2015-01-05: added backup feature, see --backup (VRF 1.1.0) [Patrick Van der Veken]
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# @(#) 2015-01-19: updated display_usage() (VRF 1.1.1) [Patrick Van der Veken]
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# @(#) 2015-02-03: use 'sudo -n' (VRF 1.1.2) [Patrick Van der Veken]
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# @(#) 2015-04-10: fix in --fix-local routine (VRF 1.1.3) [Patrick Van der Veken]
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# @(#) 2015-05-16: added SSH_OWNER_GROUP (VRF 1.1.4) [Patrick Van der Veken]
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# @(#) 2015-08-15: moved essential configuration items of the script into a
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# @(#) separate configuration file (global/local), fix in
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# @(#) wait_for_children (VRF 1.2.0) [Patrick Van der Veken]
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# @(#) 2015-08-26: added DO_SFTP_CHMOD configuration parameter to avoid
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# @(#) setstat failures with sftp_file() when remote file
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# @(#) permissions do not allow (VRF 1.2.1) [Patrick Van der Veken]
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# @(#) 2015-08-28: check_config() update (VRF 1.2.2) [Patrick Van der Veken]
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# @(#) 2015-09-04: fix in wait_for_children (VRF 1.2.3) [Patrick Van der Veken]
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# @(#) 2015-09-06: proper error checking in fix2host(), update2host() by using
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# @(#) logc() (VRF 1.3.0) [Patrick Van der Veken]
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# @(#) 2015-09-09: better handling of leading log sigils in die(), log(), logc()
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# @(#) and warn(), fix in count_fields(), failure in local update
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# @(#) should be die() (VRF 1.3.1) [Patrick Van der Veken]
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# -----------------------------------------------------------------------------
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# DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
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#******************************************************************************
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#******************************************************************************
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# DATA structures
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#******************************************************************************
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# ------------------------- CONFIGURATION starts here -------------------------
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# Below configuration values should not be changed. Use the GLOBAL_CONFIG_FILE
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# or LOCAL_CONFIG_FILE instead
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# define the V.R.F (version/release/fix)
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MY_VRF="1.3.1"
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# name of the global configuration file (script)
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GLOBAL_CONFIG_FILE="manage_ssh.conf"
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# name of the local configuration file (script)
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LOCAL_CONFIG_FILE="manage_ssh.conf.local"
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# location of temporary working storage
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TMP_DIR="/var/tmp"
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# ------------------------- CONFIGURATION ends here ---------------------------
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# miscelleaneous
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PATH=${PATH}:/usr/bin:/usr/local/bin
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SCRIPT_NAME=$(basename $0)
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SCRIPT_DIR=$(dirname $0)
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OS_NAME="$(uname)"
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KEYS_FILE=""
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KEYS_DIR=""
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TARGETS_FILE=""
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FIX_CREATE=0
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KEY_COUNT=0
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KEY_1024_COUNT=0
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KEY_2048_COUNT=0
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KEY_4096_COUNT=0
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KEY_OTHER_COUNT=0
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TMP_FILE="${TMP_DIR}/.${SCRIPT_NAME}.$$"
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TMP_RC_FILE="${TMP_DIR}/.${SCRIPT_NAME}.rc.$$"
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# command-line parameters
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ARG_ACTION=0 # default is nothing
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ARG_FIX_DIR="" # location of SSH controls directory
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ARG_LOG_DIR="" # location of the log directory (~root etc)
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ARG_LOCAL_DIR="" # location of the local SSH control files
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ARG_REMOTE_DIR="" # location of the remote SSH control files
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ARG_TARGETS="" # list of remote targets
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ARG_LOG=1 # logging is on by default
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ARG_VERBOSE=1 # STDOUT is on by default
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ARG_DEBUG=0 # debug is off by default
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#******************************************************************************
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# FUNCTION routines
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#******************************************************************************
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# -----------------------------------------------------------------------------
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function check_config
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{
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# SSH_TRANSFER_USER
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if [[ -z "${SSH_TRANSFER_USER}" ]]
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then
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SSH_TRANSFER_USER="${LOGNAME}"
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if [[ -z "${SSH_TRANSFER_USER}" ]]
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then
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print -u2 "ERROR: no value for the SSH_TRANSFER_USER setting in the configuration file"
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exit 1
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fi
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fi
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# LOCAL_DIR
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if [[ -z "${LOCAL_DIR}" ]]
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then
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print -u2 "ERROR: no value for the LOCAL_DIR setting in the configuration file"
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exit 1
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fi
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# REMOTE_DIR
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if [[ -z "${REMOTE_DIR}" ]]
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then
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print -u2 "ERROR: no value for the REMOTE_DIR setting in the configuration file"
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exit 1
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fi
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# DO_SFTP_CHMOD
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if [[ -z "${DO_SFTP_CHMOD}" ]]
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then
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print -u2 "ERROR: no value for the DO_SFTP_CHMOD setting in the configuration file"
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exit 1
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fi
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# SSH_UPDATE_USER
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if [[ -z "${SSH_UPDATE_USER}" ]]
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then
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SSH_UPDATE_USER="${LOGNAME}"
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if [[ -z "${SSH_UPDATE_USER}" ]]
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then
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print -u2 "ERROR: no value for SSH_UPDATE_USER setting in the configuration file"
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exit 1
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fi
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fi
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# MAX_BACKGROUND_PROCS
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if [[ -z "${MAX_BACKGROUND_PROCS}" ]]
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then
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print -u2 "ERROR: no value for the MAX_BACKGROUND_PROCS setting in the configuration file"
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exit 1
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fi
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# BACKUP_DIR
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if [[ -z "${BACKUP_DIR}" ]]
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then
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print -u2 "ERROR: no value for the BACKUP_DIR setting in the configuration file"
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exit 1
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fi
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return 0
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}
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# -----------------------------------------------------------------------------
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function check_logging
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{
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if (( ARG_LOG ))
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then
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if [[ ! -d "${LOG_DIR}" ]]
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then
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if [[ ! -w "${LOG_DIR}" ]]
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then
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# switch off logging intelligently when needed for permission problems
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# since this script may run with root/non-root actions
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print -u2 "ERROR: unable to write to the log directory at ${LOG_DIR}, disabling logging"
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ARG_LOG=0
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fi
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else
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if [[ ! -w "${LOG_FILE}" ]]
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then
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# switch off logging intelligently when needed for permission problems
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# since this script may run with root/non-root actions
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print -u2 "ERROR: unable to write to the log file at ${LOG_FILE}, disabling logging"
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ARG_LOG=0
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fi
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fi
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fi
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return 0
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}
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# -----------------------------------------------------------------------------
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function check_params
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{
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# -- ALL
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if (( ARG_ACTION < 1 || ARG_ACTION > 9 ))
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then
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display_usage
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exit 0
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fi
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# --fix-local + --fix-dir
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if (( ARG_ACTION == 5 ))
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then
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if [[ -z "${ARG_FIX_DIR}" ]]
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then
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print -u2 "ERROR: you must specify a value for parameter '--fix-dir"
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exit 1
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else
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FIX_DIR="${ARG_FIX_DIR}"
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fi
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fi
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# --local-dir
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if [[ -n "${ARG_LOCAL_DIR}" ]]
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then
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if [ \( ! -d "${ARG_LOCAL_DIR}" \) -o \( ! -r "${ARG_LOCAL_DIR}" \) ]
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then
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print -u2 "ERROR: unable to read directory ${ARG_LOCAL_DIR}"
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exit 1
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else
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LOCAL_DIR="${ARG_LOCAL_DIR}"
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fi
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fi
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# --log-dir
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[[ -z "${ARG_LOG_DIR}" ]] || LOG_DIR="${ARG_LOG_DIR}"
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LOG_FILE="${LOG_DIR}/${SCRIPT_NAME}.log"
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# --remote-dir
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if (( ARG_ACTION == 1 || ARG_ACTION == 2 ))
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then
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if [[ -n "${ARG_REMOTE_DIR}" ]]
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then
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REMOTE_DIR="${ARG_REMOTE_DIR}"
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fi
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fi
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# --targets
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if [[ -n "${ARG_TARGETS}" ]]
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then
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> ${TMP_FILE}
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# write comma-separated target list to the temporary file
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print "${ARG_TARGETS}" | tr -s ',' '\n' | while read TARGET_HOST
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do
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print ${TARGET_HOST} >>${TMP_FILE}
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done
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fi
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# --update + --fix-local
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if (( ARG_ACTION == 4 || ARG_ACTION == 5 ))
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then
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if [[ -n "${TARGETS}" ]]
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then
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print -u2 "ERROR: you cannot specify '--targets' in this context!"
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exit 1
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fi
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fi
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return 0
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}
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# -----------------------------------------------------------------------------
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function check_root_user
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{
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(IFS='()'; set -- $(id); print $2) | read UID
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if [[ "${UID}" = "root" ]]
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then
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return 0
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else
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return 1
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fi
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}
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# -----------------------------------------------------------------------------
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function check_setup
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{
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# use added fall back for LOCAL_DIR (the default script directory)
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[[ -d "${LOCAL_DIR}" ]] || LOCAL_DIR="${SCRIPT_DIR}"
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# check for basic SSH control files: access/alias
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for FILE in "${LOCAL_DIR}/access" "${LOCAL_DIR}/alias"
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do
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if [[ ! -r "${FILE}" ]]
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then
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print -u2 "ERROR: cannot read file ${FILE}"
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exit 1
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fi
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done
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# check for basic SSH control file(s): targets, /var/tmp/targets.$USER (or $TMP_FILE)
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if (( ARG_ACTION == 1 || ARG_ACTION == 2 || ARG_ACTION == 6 ))
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then
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if [[ -z "${ARG_TARGETS}" ]]
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then
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TARGETS_FILE="${LOCAL_DIR}/targets"
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if [ \( ! -r "${TARGETS_FILE}" \) -a \( ! -r "/var/tmp/targets.${USER}" \) ]
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then
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print -u2 "ERROR: cannot read file ${TARGETS_FILE} nor /var/tmp/targets.${USER}"
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exit 1
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fi
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# override default targets file
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[[ -r "/var/tmp/targets.${USER}" ]] && TARGETS_FILE="/var/tmp/targets.${USER}"
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else
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TARGETS_FILE=${TMP_FILE}
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fi
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fi
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# check for basic SSH control file(s): keys, keys.d/*
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if [[ -d "${LOCAL_DIR}/keys.d" && -f "${LOCAL_DIR}/keys" ]]
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then
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print -u2 "WARN: found both a 'keys' file (${LOCAL_DIR}/keys) and a 'keys.d' directory (${LOCAL_DIR}/keys.d). Ignoring the 'keys' file"
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fi
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if [[ -d "${LOCAL_DIR}/keys.d" ]]
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then
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KEYS_DIR="${LOCAL_DIR}/keys.d"
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if [[ ! -r "${KEYS_DIR}" ]]
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then
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print -u2 "ERROR: unable to read directory ${KEYS_DIR}"
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exit 1
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fi
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elif [[ -f "${LOCAL_DIR}/keys" ]]
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then
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KEYS_FILE="${LOCAL_DIR}/keys"
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if [[ ! -r "${KEYS_FILE}" ]]
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then
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print -u2 "ERROR: cannot read file ${KEYS_FILE}"
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exit 1
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fi
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else
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print -u2 "ERROR: could not found any public keys in ${LOCAL_DIR}!"
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exit 1
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fi
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# check for SSH control scripts & configurations (not .local)
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if (( ARG_ACTION == 1 || ARG_ACTION == 2 || ARG_ACTION == 4 ))
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then
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for FILE in "${LOCAL_DIR}/update_ssh.pl" \
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"${LOCAL_DIR}/update_ssh.conf" \
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"${SCRIPT_DIR}/${SCRIPT_NAME}" \
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"${SCRIPT_DIR}/${GLOBAL_CONFIG_FILE}"
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do
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if [[ ! -r "${FILE}" ]]
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then
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print -u2 "ERROR: cannot read file ${FILE}"
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exit 1
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fi
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done
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fi
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return 0
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}
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# -----------------------------------------------------------------------------
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function check_syntax
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{
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# access should have 3 fields
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cat "${LOCAL_DIR}/access" | grep -v -E -e '^#|^$' | while read ACCESS_LINE
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do
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ACCESS_FIELDS=$(count_fields "${ACCESS_LINE}" ":")
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(( ACCESS_FIELDS != 3 )) && \die "line '${ACCESS_LINE}' in access file has missing or too many field(s) (should be 3)"
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done
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# alias should have 2 fields
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cat "${LOCAL_DIR}/alias" | grep -v -E -e '^#|^$' | while read ALIAS_LINE
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do
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ALIAS_FIELDS=$(count_fields "${ALIAS_LINE}" ":")
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(( ALIAS_FIELDS != 2 )) && die "line '${ALIAS_LINE}' in alias file has missing or too many field(s) (should be 2)"
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done
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# key files should have 3 fields
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ls -1 ${LOCAL_DIR}/keys.d/* ${LOCAL_DIR}/keys 2>/dev/null | while read KEY_FILE
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do
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cat ${KEY_FILE} 2>/dev/null | grep -v -E -e '^#|^$' |\
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while read KEY_LINE
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do
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KEY_FIELDS=$(count_fields "${KEY_LINE}" ",")
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(( KEY_FIELDS != 3 )) && die "line '${KEY_LINE}' in a keys file has missing or too many field(s) (should be 3)"
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done
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done
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return 0
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}
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# -----------------------------------------------------------------------------
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function count_fields
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{
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CHECK_LINE="$1"
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CHECK_DELIM="$2"
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NUM_FIELDS=$(print "${CHECK_LINE}" | awk -F "${CHECK_DELIM}" '{ print NF }')
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print ${NUM_FIELDS}
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return 0
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}
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# -----------------------------------------------------------------------------
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function die
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{
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NOW="$(date '+%d-%h-%Y %H:%M:%S')"
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if [[ -n "$1" ]]
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then
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if (( ARG_LOG ))
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then
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print - "$*" | while read LOG_LINE
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do
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# check for leading log sigils and retain them
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case "${LOG_LINE}" in
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INFO:*)
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LOG_LINE="${LOG_LINE#INFO: *}"
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LOG_SIGIL="INFO"
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;;
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WARN:*)
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LOG_LINE="${LOG_LINE#WARN: *}"
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LOG_SIGIL="WARN"
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;;
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ERROR:*)
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LOG_LINE="${LOG_LINE#ERROR: *}"
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LOG_SIGIL="ERROR"
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;;
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*)
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LOG_SIGIL="ERROR"
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;;
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esac
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print "${NOW}: ${LOG_SIGIL}: [$$]:" "${LOG_LINE}" >>${LOG_FILE}
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done
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fi
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print - "$*" | while read LOG_LINE
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do
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# check for leading log sigils and retain them
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case "${LOG_LINE}" in
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INFO:*|WARN:*|ERROR*)
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print "${LOG_LINE}"
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;;
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*)
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print "ERROR:" "${LOG_LINE}"
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;;
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esac
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done
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fi
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# finish up work
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do_cleanup
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exit 1
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}
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# -----------------------------------------------------------------------------
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function display_usage
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{
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cat << EOT
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**** ${SCRIPT_NAME} ****
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**** (c) KUDOS BVBA - Patrick Van der Veken ****
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Performs basic functions for SSH controls: update SSH keys locally or
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remote, create SSH key fingerprints or copy/distribute the SSH controls files
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Syntax: ${SCRIPT_DIR}/${SCRIPT_NAME} [--help] | (--backup | --check-syntax | --preview-global | --make-finger | --update ) |
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(--apply [--remote-dir=<remote_directory>] [--targets=<host1>,<host2>,...]) |
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((--copy|--distribute) [--remote-dir=<remote_directory> [--targets=<host1>,<host2>,...]]) |
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([--fix-local --fix-dir=<repository_dir> [--create-dir]] | [--fix-remote [--create-dir] [--targets=<host1>,<host2>,...]])
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[--local-dir=<local_directory>] [--no-log] [--log-dir=<log_directory>] [--debug]
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Parameters:
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--apply|-a : apply SSH controls remotely (~targets)
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--backup|-b : create a backup of the SSH controls repository (SSH master)
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--create-dir : also create missing directories when fixing the SSH controls
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repository (see also --fix-local/--fix-remote)
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--check-syntax|-s : do basic syntax checking on SSH controls configuration
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(access, alias & keys files)
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--copy|-c : copy SSH control files to remote host (~targets)
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--debug : print extra status messages on STDERR
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--distribute|-d : same as --copy
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--fix-dir : location of the local SSH controls client repository
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--fix-local : fix permissions on the local SSH controls repository
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(local SSH controls repository given by --fix-dir)
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--fix-remote : fix permissions on the remote SSH controls repository
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--help|-h : this help text
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--local-dir : location of the SSH control files on the local filesystem.
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[default: ${LOCAL_DIR}]
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--log-dir : specify a log directory location.
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--no-log : do not log any messages to the script log file.
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--make-finger|-m : create (local) key fingerprints file
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--preview-global|-p : dump the global access namespace (after alias resolution)
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--remote-dir : directory where SSH control files are/should be
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located/copied on/to the target host
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[default: ${REMOTE_DIR}]
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--targets : comma-separated list of target hosts to operate on. Override the
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hosts contained in the 'targets' configuration file.
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--update|-u : apply SSH controls locally
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--version|-V : show the script version/release/fix
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Note 1: distribute and update actions are run in parallel across a maximum of
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${MAX_BACKGROUND_PROCS} clients at the same time.
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Note 2: for fix and update actions: make sure correct 'sudo' rules are setup
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on the target systems to allow the SSH controls script to run with
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elevated privileges.
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Note 3: only GLOBAL configuration files will be distributed to target hosts.
|
|
|
|
EOT
|
|
|
|
return 0
|
|
}
|
|
|
|
# -----------------------------------------------------------------------------
|
|
# distribute SSH controls to a single host/client
|
|
function distribute2host
|
|
{
|
|
SERVER="$1"
|
|
ERROR_COUNT=0
|
|
|
|
# convert line to hostname
|
|
SERVER=${SERVER%%;*}
|
|
resolve_host ${SERVER}
|
|
if (( $? ))
|
|
then
|
|
warn "could not lookup host ${SERVER}, skipping"
|
|
return 1
|
|
fi
|
|
|
|
# specify copy objects as 'filename!permissions'
|
|
# 1) config files & scripts
|
|
for FILE in "${LOCAL_DIR}/access!660" \
|
|
"${LOCAL_DIR}/alias!660" \
|
|
"${LOCAL_DIR}/update_ssh.pl!770" \
|
|
"${LOCAL_DIR}/update_ssh.conf!660" \
|
|
"${SCRIPT_DIR}/${SCRIPT_NAME}!770" \
|
|
"${SCRIPT_DIR}/${GLOBAL_CONFIG_FILE}!660"
|
|
do
|
|
# sftp transfer
|
|
sftp_file ${FILE} ${SERVER}
|
|
COPY_RC=$?
|
|
if (( ! COPY_RC ))
|
|
then
|
|
log "transferred ${FILE%!*} to ${SERVER}:${REMOTE_DIR}"
|
|
else
|
|
warn "failed to transfer ${FILE%!*} to ${SERVER}:${REMOTE_DIR} [RC=${COPY_RC}]"
|
|
ERROR_COUNT=$(( ERROR_COUNT + 1 ))
|
|
fi
|
|
done
|
|
# 2) keys files
|
|
# are keys stored a file or a directory?
|
|
if [[ -n "${KEYS_DIR}" ]]
|
|
then
|
|
# merge keys file(s) before copy (in a temporary location)
|
|
TMP_WORK_DIR="${TMP_DIR}/$0.${RANDOM}"
|
|
mkdir -p ${TMP_WORK_DIR}
|
|
if (( $? ))
|
|
then
|
|
die "unable to create temporary directory ${TMP_WORK_DIR} for mangling of 'keys' file"
|
|
fi
|
|
TMP_MERGE_FILE="${TMP_WORK_DIR}/keys"
|
|
log "keys are stored in a DIRECTORY, first merging all keys into ${TMP_MERGE_FILE}"
|
|
cat ${KEYS_DIR}/* >${TMP_MERGE_FILE}
|
|
# sftp transfer
|
|
sftp_file "${TMP_MERGE_FILE}!640" ${SERVER}
|
|
COPY_RC=$?
|
|
if (( ! COPY_RC ))
|
|
then
|
|
log "transferred ${TMP_MERGE_FILE} to ${SERVER}:${REMOTE_DIR}"
|
|
else
|
|
warn "failed to transfer ${TMP_MERGE_FILE%!*} to ${SERVER}:${REMOTE_DIR} [RC=${COPY_RC}]"
|
|
ERROR_COUNT=$(( ERROR_COUNT + 1 ))
|
|
fi
|
|
[[ -d ${TMP_WORK_DIR} ]] && rm -rf ${TMP_WORK_DIR} 2>/dev/null
|
|
else
|
|
sftp_file "${KEYS_FILE}!640" ${SERVER}
|
|
COPY_RC=$?
|
|
if (( ! COPY_RC ))
|
|
then
|
|
log "transferred ${KEYS_FILE} to ${SERVER}:${REMOTE_DIR}"
|
|
else
|
|
warn "failed to transfer ${KEYS_FILE} to ${SERVER}:${REMOTE_DIR} [RC=${COPY_RC}]"
|
|
ERROR_COUNT = $(( ERROR_COUNT + 1 ))
|
|
fi
|
|
fi
|
|
# discover a keys blacklist file, also copy it across if we find one
|
|
# never use a keys blacklist file from the local config though
|
|
[[ -r ${LOCAL_DIR}/keyupdate.conf ]] && \
|
|
BLACKLIST_FILE="$(grep -E -e '^blacklist_file' ${LOCAL_DIR}/update_ssh.conf 2>/dev/null | cut -f2 -d'=')"
|
|
if [[ -n "${BLACKLIST_FILE}" ]]
|
|
then
|
|
if [[ -r "${BLACKLIST_FILE}" ]]
|
|
then
|
|
log "keys blacklist file found at ${BLACKLIST_FILE}"
|
|
# sftp transfer
|
|
sftp_file "${BLACKLIST_FILE}!660" ${SERVER}
|
|
COPY_RC=$?
|
|
if (( ! COPY_RC ))
|
|
then
|
|
log "transferred ${BLACKLIST_FILE} to ${SERVER}:${REMOTE_DIR}"
|
|
else
|
|
warn "failed to transfer ${BLACKLIST_FILE%!*} to ${SERVER}:${REMOTE_DIR} [RC=${COPY_RC}]"
|
|
ERROR_COUNT = $(( ERROR_COUNT + 1 ))
|
|
fi
|
|
fi
|
|
fi
|
|
|
|
return ${ERROR_COUNT}
|
|
}
|
|
|
|
# -----------------------------------------------------------------------------
|
|
function do_cleanup
|
|
{
|
|
log "performing cleanup ..."
|
|
|
|
# remove temporary file(s)
|
|
[[ -f ${TMP_FILE} ]] && rm -f ${TMP_FILE} >/dev/null 2>&1
|
|
[[ -f ${TMP_MERGE_FILE} ]] && rm -f ${TMP_MERGE_FILE} >/dev/null 2>&1
|
|
[[ -f ${TMP_RC_FILE} ]] && rm -f ${TMP_RC_FILE} >/dev/null 2>&1
|
|
log "*** finish of ${SCRIPT_NAME} [${CMD_LINE}] ***"
|
|
|
|
return 0
|
|
}
|
|
|
|
# -----------------------------------------------------------------------------
|
|
# fix SSH controls on a single host/client (permissions/ownerships)
|
|
# !! requires appropriate 'sudo' rules on remote client for privilege elevation
|
|
function fix2host
|
|
{
|
|
SERVER="$1"
|
|
SERVER_DIR="$2"
|
|
|
|
# convert line to hostname
|
|
SERVER=${SERVER%%;*}
|
|
resolve_host ${SERVER}
|
|
if (( $? ))
|
|
then
|
|
warn "could not lookup host ${SERVER}, skipping"
|
|
return 1
|
|
fi
|
|
|
|
log "fixing ssh controls on ${SERVER} ..."
|
|
if [[ -z "${SSH_UPDATE_USER}" ]]
|
|
then
|
|
# own user w/ sudo
|
|
( RC=0; ssh ${SSH_ARGS} ${SERVER} sudo -n ${REMOTE_DIR}/${SCRIPT_NAME} --fix-local --fix-dir=${SERVER_DIR};
|
|
print "$?" > ${TMP_RC_FILE}; exit
|
|
) 2>&1 | logc
|
|
elif [[ "${SSH_UPDATE_USER}" != "root" ]]
|
|
then
|
|
# other user w/ sudo
|
|
( RC=0; ssh ${SSH_ARGS} ${SSH_UPDATE_USER}@${SERVER} sudo -n ${REMOTE_DIR}/${SCRIPT_NAME} --fix-local --fix-dir=${SERVER_DIR};
|
|
print "$?" > ${TMP_RC_FILE}; exit
|
|
) 2>&1 | logc
|
|
else
|
|
# root user w/o sudo
|
|
( RC=0; ssh ${SSH_ARGS} root@${SERVER} ${REMOTE_DIR}/${SCRIPT_NAME} --fix-local --fix-dir=${SERVER_DIR};
|
|
print "$?" > ${TMP_RC_FILE}; exit
|
|
) 2>&1 | logc
|
|
fi
|
|
|
|
# fetch return code from subshell
|
|
RC="$(< ${TMP_RC_FILE})"
|
|
|
|
return ${RC}
|
|
}
|
|
|
|
# -----------------------------------------------------------------------------
|
|
function get_linux_version
|
|
{
|
|
LSB_VERSION=$(lsb_release -rs 2>/dev/null | cut -f1 -d'.')
|
|
|
|
if [[ -z "${LSB_VERSION}" ]]
|
|
then
|
|
RELEASE_STRING=$(/bin/grep -i 'release' /etc/redhat-release 2>/dev/null)
|
|
|
|
case "${RELEASE_STRING}" in
|
|
*release\ 5*)
|
|
RHEL_VERSION=5
|
|
;;
|
|
*release\ 6*)
|
|
RHEL_VERSION=6
|
|
;;
|
|
*release\ 7*)
|
|
RHEL_VERSION=7
|
|
;;
|
|
*)
|
|
RHEL_VERSION=""
|
|
;;
|
|
esac
|
|
print "${RHEL_VERSION}"
|
|
else
|
|
print "${LSB_VERSION}"
|
|
fi
|
|
}
|
|
|
|
|
|
# -----------------------------------------------------------------------------
|
|
# log an INFO: message (via ARG).
|
|
function log
|
|
{
|
|
NOW="$(date '+%d-%h-%Y %H:%M:%S')"
|
|
|
|
# log an INFO: message (via ARG).
|
|
if [[ -n "$1" ]]
|
|
then
|
|
if (( ARG_LOG ))
|
|
then
|
|
print - "$*" | while read LOG_LINE
|
|
do
|
|
# check for leading log sigils and retain them
|
|
case "${LOG_LINE}" in
|
|
INFO:*)
|
|
LOG_LINE="${LOG_LINE#INFO: *}"
|
|
LOG_SIGIL="INFO"
|
|
;;
|
|
WARN:*)
|
|
LOG_LINE="${LOG_LINE#WARN: *}"
|
|
LOG_SIGIL="WARN"
|
|
;;
|
|
ERROR:*)
|
|
LOG_LINE="${LOG_LINE#ERROR: *}"
|
|
LOG_SIGIL="ERROR"
|
|
;;
|
|
*)
|
|
LOG_SIGIL="INFO"
|
|
;;
|
|
esac
|
|
print "${NOW}: ${LOG_SIGIL}: [$$]:" "${LOG_LINE}" >>${LOG_FILE}
|
|
done
|
|
fi
|
|
if (( ARG_VERBOSE ))
|
|
then
|
|
print - "$*" | while read LOG_LINE
|
|
do
|
|
# check for leading log sigils and retain them
|
|
case "${LOG_LINE}" in
|
|
INFO:*|WARN:*|ERROR*)
|
|
print "${LOG_LINE}"
|
|
;;
|
|
*)
|
|
print "INFO:" "${LOG_LINE}"
|
|
;;
|
|
esac
|
|
done
|
|
fi
|
|
fi
|
|
|
|
return 0
|
|
}
|
|
|
|
# -----------------------------------------------------------------------------
|
|
# log an INFO: message (via STDIN). Do not use when STDIN is still open
|
|
function logc
|
|
{
|
|
NOW="$(date '+%d-%h-%Y %H:%M:%S')"
|
|
LOG_STDIN=""
|
|
|
|
# process STDIN (if any)
|
|
[[ ! -t 0 ]] && LOG_STDIN="$(cat)"
|
|
if [[ -n "${LOG_STDIN}" ]]
|
|
then
|
|
if (( ARG_LOG ))
|
|
then
|
|
print - "${LOG_STDIN}" | while read LOG_LINE
|
|
do
|
|
# check for leading log sigils and retain them
|
|
case "${LOG_LINE}" in
|
|
INFO:*)
|
|
LOG_LINE="${LOG_LINE#INFO: *}"
|
|
LOG_SIGIL="INFO"
|
|
;;
|
|
WARN:*)
|
|
LOG_LINE="${LOG_LINE#WARN: *}"
|
|
LOG_SIGIL="WARN"
|
|
;;
|
|
ERROR:*)
|
|
LOG_LINE="${LOG_LINE#ERROR: *}"
|
|
LOG_SIGIL="ERROR"
|
|
;;
|
|
*)
|
|
LOG_SIGIL="INFO"
|
|
;;
|
|
esac
|
|
print "${NOW}: ${LOG_SIGIL}: [$$]:" "${LOG_LINE}" >>${LOG_FILE}
|
|
done
|
|
fi
|
|
if (( ARG_VERBOSE ))
|
|
then
|
|
print - "${LOG_STDIN}" | while read LOG_LINE
|
|
do
|
|
# check for leading log sigils and retain them
|
|
case "${LOG_LINE}" in
|
|
INFO:*|WARN:*|ERROR*)
|
|
print "${LOG_LINE}"
|
|
;;
|
|
*)
|
|
print "INFO:" "${LOG_LINE}"
|
|
;;
|
|
esac
|
|
done
|
|
fi
|
|
fi
|
|
|
|
# process ARG (if any)
|
|
if [[ -n "$1" ]]
|
|
then
|
|
if (( ARG_LOG != 0 ))
|
|
then
|
|
print - "$*" | while read LOG_LINE
|
|
do
|
|
# check for leading log sigils and retain them
|
|
case "${LOG_LINE}" in
|
|
INFO:*)
|
|
LOG_LINE="${LOG_LINE#INFO: *}"
|
|
LOG_SIGIL="INFO"
|
|
;;
|
|
WARN:*)
|
|
LOG_LINE="${LOG_LINE#WARN: *}"
|
|
LOG_SIGIL="WARN"
|
|
;;
|
|
ERROR:*)
|
|
LOG_LINE="${LOG_LINE#ERROR: *}"
|
|
LOG_SIGIL="ERROR"
|
|
;;
|
|
*)
|
|
LOG_SIGIL="INFO"
|
|
;;
|
|
esac
|
|
print "${NOW}: ${LOG_SIGIL}: [$$]:" "${LOG_LINE}" >>${LOG_FILE}
|
|
done
|
|
fi
|
|
if (( ARG_VERBOSE != 0 ))
|
|
then
|
|
print - "$*" | while read LOG_LINE
|
|
do
|
|
case "${LOG_LINE}" in
|
|
INFO:*|WARN:*|ERROR*)
|
|
print "${LOG_LINE}"
|
|
;;
|
|
*)
|
|
print "INFO:" "${LOG_LINE}"
|
|
;;
|
|
esac
|
|
done
|
|
fi
|
|
fi
|
|
|
|
return 0
|
|
}
|
|
|
|
# -----------------------------------------------------------------------------
|
|
# resolve a host (check)
|
|
function resolve_host
|
|
{
|
|
LOOKUP_HOST="$1"
|
|
|
|
nslookup $1 2>/dev/null | grep -q -E -e 'Address:.*([0-9]{1,3}[\.]){3}[0-9]{1,3}'
|
|
|
|
return $?
|
|
}
|
|
|
|
# -----------------------------------------------------------------------------
|
|
# transfer a file using sftp
|
|
function sftp_file
|
|
{
|
|
TRANSFER_FILE="$1"
|
|
TRANSFER_HOST="$2"
|
|
|
|
# find the local directory & permission bits
|
|
TRANSFER_DIR="${TRANSFER_FILE%/*}"
|
|
TRANSFER_PERMS="${TRANSFER_FILE##*!}"
|
|
# cut out the permission bits and the directory path
|
|
TRANSFER_FILE="${TRANSFER_FILE%!*}"
|
|
SOURCE_FILE="${TRANSFER_FILE##*/}"
|
|
OLD_PWD=$(pwd) && cd ${TRANSFER_DIR}
|
|
|
|
# transfer, (possibly) chmod the file to/on the target server (keep STDERR)
|
|
if (( DO_SFTP_CHMOD ))
|
|
then
|
|
sftp ${SFTP_ARGS} ${SSH_TRANSFER_USER}@${TRANSFER_HOST} >/dev/null <<EOT
|
|
cd ${REMOTE_DIR}
|
|
put ${SOURCE_FILE}
|
|
chmod ${TRANSFER_PERMS} ${SOURCE_FILE}
|
|
EOT
|
|
SFTP_RC=$?
|
|
else
|
|
sftp ${SFTP_ARGS} ${SSH_TRANSFER_USER}@${TRANSFER_HOST} >/dev/null <<EOT
|
|
cd ${REMOTE_DIR}
|
|
put ${SOURCE_FILE}
|
|
EOT
|
|
SFTP_RC=$?
|
|
fi
|
|
|
|
cd ${OLD_PWD}
|
|
|
|
return ${SFTP_RC}
|
|
}
|
|
|
|
# -----------------------------------------------------------------------------
|
|
# update SSH controls on a single host/client
|
|
# !! requires appropriate 'sudo' rules on remote client for privilege elevation
|
|
function update2host
|
|
{
|
|
SERVER="$1"
|
|
|
|
# convert line to hostname
|
|
SERVER=${SERVER%%;*}
|
|
resolve_host ${SERVER}
|
|
if (( $? ))
|
|
then
|
|
warn "could not lookup host ${SERVER}, skipping"
|
|
return 1
|
|
fi
|
|
|
|
log "setting ssh controls on ${SERVER} ..."
|
|
if [[ -z "${SSH_UPDATE_USER}" ]]
|
|
then
|
|
# own user w/ sudo
|
|
( RC=0; ssh ${SSH_ARGS} ${SERVER} sudo -n ${REMOTE_DIR}/${SCRIPT_NAME} --update;
|
|
print "$?" > ${TMP_RC_FILE}; exit
|
|
) 2>&1 | logc
|
|
elif [[ "${SSH_UPDATE_USER}" != "root" ]]
|
|
then
|
|
# other user w/ sudo
|
|
( RC=0; ssh ${SSH_ARGS} ${SSH_UPDATE_USER}@${SERVER} sudo -n ${REMOTE_DIR}/${SCRIPT_NAME} --update;
|
|
print "$?" > ${TMP_RC_FILE}; exit
|
|
) 2>&1 | logc
|
|
else
|
|
# root user w/o sudo
|
|
( RC=0; ssh ${SSH_ARGS} root@${SERVER} ${REMOTE_DIR}/${SCRIPT_NAME} --update;
|
|
print "$?" > ${TMP_RC_FILE}; exit
|
|
) 2>&1 | logc
|
|
fi
|
|
|
|
# fetch return code from subshell
|
|
RC="$(< ${TMP_RC_FILE})"
|
|
|
|
return ${RC}
|
|
}
|
|
|
|
# -----------------------------------------------------------------------------
|
|
# update the 'fingerprints' file (must exist beforehand)
|
|
function update_fingerprints
|
|
{
|
|
FINGER_LINE="$1"
|
|
|
|
# check for empty line
|
|
[[ -z "${FINGER_LINE}" ]] && log "skipping empty line in keys file" && return 0
|
|
|
|
# line should have 3 fields
|
|
FINGER_FIELDS=$(count_fields "${FINGER_LINE}" ",")
|
|
(( FINGER_FIELDS != 3 )) && \die "line '${FINGER_LINE}' has missing or too many field(s) (should be 3))"
|
|
|
|
# create fingerprint
|
|
FINGER_USER="$(print ${FINGER_LINE} | awk -F, '{print $1}')"
|
|
print "${FINGER_LINE}" | awk -F, '{print $2," ",$3}' > ${TMP_FILE}
|
|
# check if fingerprint is valid
|
|
FINGERPRINT="$(ssh-keygen -l -f ${TMP_FILE} 2>&1)"
|
|
FINGER_RC=$?
|
|
if (( ! FINGER_RC ))
|
|
then
|
|
FINGER_ENTRY="$(print ${FINGERPRINT} | awk '{print $1,$2,$4}')"
|
|
log "${FINGER_USER}->${FINGER_ENTRY}"
|
|
print "${FINGER_USER} ${FINGER_ENTRY}" >> "${LOCAL_DIR}/fingerprints"
|
|
else
|
|
die "failed to obtain fingerprint for key ${FINGER_LINE} [RC=${FINGER_RC}]"
|
|
fi
|
|
# check bit count
|
|
case "${FINGERPRINT}" in
|
|
1024*)
|
|
KEY_1024_COUNT=$(( KEY_1024_COUNT + 1 ))
|
|
;;
|
|
2048*)
|
|
KEY_2048_COUNT=$(( KEY_2048_COUNT + 1 ))
|
|
;;
|
|
4096*)
|
|
KEY_4096_COUNT=$(( KEY_4096_COUNT + 1 ))
|
|
;;
|
|
*)
|
|
KEY_OTHER_COUNT=$(( KEY_OTHER_COUNT + 1 ))
|
|
;;
|
|
esac
|
|
|
|
return 0
|
|
}
|
|
|
|
# -----------------------------------------------------------------------------
|
|
# wait for child processes to exit
|
|
function wait_for_children
|
|
{
|
|
WAIT_ERRORS=0
|
|
|
|
# 'endless' loop :-)
|
|
while :
|
|
do
|
|
(( ARG_DEBUG )) && print -u2 "child processes remaining: $*"
|
|
for PID in "$@"
|
|
do
|
|
shift
|
|
# child is still alive?
|
|
if $(kill -0 ${PID} 2>/dev/null)
|
|
then
|
|
(( ARG_DEBUG )) && print -u2 "DEBUG: ${PID} is still alive"
|
|
set -- "$@" "${PID}"
|
|
# wait for sigchild, catching child exit codes is unreliable because
|
|
# the child might have already ended before we get here (caveat emptor)
|
|
else
|
|
wait ${PID}
|
|
RC=$?
|
|
if (( ${RC} ))
|
|
then
|
|
log "child process ${PID} exited [RC=${RC}]"
|
|
WAIT_ERRORS=$(( WAIT_ERRORS + 1 ))
|
|
else
|
|
log "child process ${PID} exited [RC=${RC}]"
|
|
fi
|
|
fi
|
|
done
|
|
# break loop if we have no child PIDs left
|
|
(($# > 0)) || break
|
|
sleep 1 # required to avoid race conditions
|
|
done
|
|
|
|
return ${WAIT_ERRORS}
|
|
}
|
|
|
|
# -----------------------------------------------------------------------------
|
|
function warn
|
|
{
|
|
NOW="$(date '+%d-%h-%Y %H:%M:%S')"
|
|
|
|
if [[ -n "$1" ]]
|
|
then
|
|
if (( ARG_LOG ))
|
|
then
|
|
print - "$*" | while read LOG_LINE
|
|
do
|
|
# check for leading log sigils and retain them
|
|
case "${LOG_LINE}" in
|
|
INFO:*)
|
|
LOG_LINE="${LOG_LINE#INFO: *}"
|
|
LOG_SIGIL="INFO"
|
|
;;
|
|
WARN:*)
|
|
LOG_LINE="${LOG_LINE#WARN: *}"
|
|
LOG_SIGIL="WARN"
|
|
;;
|
|
ERROR:*)
|
|
LOG_LINE="${LOG_LINE#ERROR: *}"
|
|
LOG_SIGIL="ERROR"
|
|
;;
|
|
*)
|
|
LOG_SIGIL="WARN"
|
|
;;
|
|
esac
|
|
print "${NOW}: ${LOG_SIGIL}: [$$]:" "${LOG_LINE}" >>${LOG_FILE}
|
|
done
|
|
fi
|
|
if (( ARG_VERBOSE ))
|
|
then
|
|
print - "$*" | while read LOG_LINE
|
|
do
|
|
# check for leading log sigils and retain them
|
|
case "${LOG_LINE}" in
|
|
INFO:*|WARN:*|ERROR*)
|
|
print "${LOG_LINE}"
|
|
;;
|
|
*)
|
|
print "WARN:" "${LOG_LINE}"
|
|
;;
|
|
esac
|
|
done
|
|
fi
|
|
fi
|
|
|
|
return 0
|
|
}
|
|
|
|
|
|
#******************************************************************************
|
|
# MAIN routine
|
|
#******************************************************************************
|
|
|
|
# parse arguments/parameters
|
|
CMD_LINE="$@"
|
|
for PARAMETER in ${CMD_LINE}
|
|
do
|
|
case ${PARAMETER} in
|
|
-a|-apply|--apply)
|
|
ARG_ACTION=1
|
|
;;
|
|
-b|-backup|--backup)
|
|
ARG_ACTION=9
|
|
;;
|
|
-c|-copy|--copy)
|
|
ARG_ACTION=2
|
|
;;
|
|
-debug|--debug)
|
|
ARG_DEBUG=1
|
|
;;
|
|
-d|-distribute|--distribute)
|
|
ARG_ACTION=2
|
|
;;
|
|
-p|--preview-global|-preview-global)
|
|
ARG_ACTION=7
|
|
;;
|
|
-s|--check-syntax|-check-syntax)
|
|
ARG_ACTION=8
|
|
;;
|
|
-fix-local|--fix-local)
|
|
ARG_ACTION=5
|
|
;;
|
|
-fix-remote|--fix-remote)
|
|
ARG_ACTION=6
|
|
;;
|
|
-m|-make-finger|--make-finger)
|
|
ARG_ACTION=3
|
|
;;
|
|
-u|-update|--update)
|
|
ARG_ACTION=4
|
|
;;
|
|
-create-dir|--create-dir)
|
|
FIX_CREATE=1
|
|
;;
|
|
-fix-dir=*)
|
|
ARG_FIX_DIR="${PARAMETER#-fix-dir=}"
|
|
;;
|
|
--fix-dir=*)
|
|
ARG_FIX_DIR="${PARAMETER#--fix-dir=}"
|
|
;;
|
|
-local-dir=*)
|
|
ARG_LOCAL_DIR="${PARAMETER#-local-dir=}"
|
|
;;
|
|
--local-dir=*)
|
|
ARG_LOCAL_DIR="${PARAMETER#--local-dir=}"
|
|
;;
|
|
-log-dir=*)
|
|
ARG_LOG_DIR="${PARAMETER#-log-dir=}"
|
|
;;
|
|
--log-dir=*)
|
|
ARG_LOG_DIR="${PARAMETER#--log-dir=}"
|
|
;;
|
|
-no-log|--no-log)
|
|
ARG_LOG=0
|
|
;;
|
|
-remote-dir=*)
|
|
ARG_REMOTE_DIR="${PARAMETER#-remote-dir=}"
|
|
;;
|
|
--remote-dir=*)
|
|
ARG_REMOTE_DIR="${PARAMETER#--remote-dir=}"
|
|
;;
|
|
-targets=*)
|
|
ARG_TARGETS="${PARAMETER#-targets=}"
|
|
;;
|
|
--targets=*)
|
|
ARG_TARGETS="${PARAMETER#--targets=}"
|
|
;;
|
|
-V|-version|--version)
|
|
print "INFO: $0: ${MY_VRF}"
|
|
exit 0
|
|
;;
|
|
\? | -h | -help | --help)
|
|
display_usage
|
|
exit 0
|
|
;;
|
|
esac
|
|
done
|
|
|
|
# check for configuration files (local overrides local)
|
|
if [[ -r "${SCRIPT_DIR}/${GLOBAL_CONFIG_FILE}" || -r "${SCRIPT_DIR}/${LOCAL_CONFIG_FILE}" ]]
|
|
then
|
|
if [[ -r "${SCRIPT_DIR}/${GLOBAL_CONFIG_FILE}" ]]
|
|
then
|
|
. "${SCRIPT_DIR}/${GLOBAL_CONFIG_FILE}"
|
|
fi
|
|
if [[ -r "${SCRIPT_DIR}/${LOCAL_CONFIG_FILE}" ]]
|
|
then
|
|
. "${SCRIPT_DIR}/${LOCAL_CONFIG_FILE}"
|
|
fi
|
|
else
|
|
print -u2 "ERROR: could not find global or local configuration file"
|
|
fi
|
|
|
|
# startup checks
|
|
check_params && check_config && check_setup && check_logging
|
|
|
|
# catch shell signals
|
|
trap 'do_cleanup; exit' 1 2 3 15
|
|
|
|
log "*** start of ${SCRIPT_NAME} [${CMD_LINE}] ***"
|
|
(( ARG_LOG )) && log "logging takes places in ${LOG_FILE}"
|
|
|
|
log "runtime info: LOCAL_DIR is set to: ${LOCAL_DIR}"
|
|
|
|
case ${ARG_ACTION} in
|
|
1) # apply SSH controls remotely
|
|
log "ACTION: apply SSH controls remotely"
|
|
check_root_user && die "must NOT be run as user 'root'"
|
|
# build clients list (in array)
|
|
cat "${TARGETS_FILE}" | grep -v -E -e '^#' -e '^$' |\
|
|
{
|
|
I=0
|
|
set -A CLIENTS
|
|
while read LINE
|
|
do
|
|
CLIENTS[${I}]="${LINE}"
|
|
I=$(( I + 1 ))
|
|
done
|
|
}
|
|
# set max updates in background
|
|
COUNT=${MAX_BACKGROUND_PROCS}
|
|
for CLIENT in ${CLIENTS[@]}
|
|
do
|
|
update2host ${CLIENT} &
|
|
PID=$!
|
|
log "updating ${CLIENT} in background [PID=${PID}] ..."
|
|
# add PID to list of all child PIDs
|
|
PIDS="${PIDS} ${PID}"
|
|
COUNT=$(( COUNT - 1 ))
|
|
if (( COUNT <= 0 ))
|
|
then
|
|
# wait until all background processes are completed
|
|
wait_for_children ${PIDS} || \
|
|
warn "$? background jobs (possibly) failed to complete correctly"
|
|
PIDS=''
|
|
# reset max updates in background
|
|
COUNT=${MAX_BACKGROUND_PROCS}
|
|
fi
|
|
done
|
|
# final wait for background processes to be finished completely
|
|
wait_for_children ${PIDS} || \
|
|
warn "$? background jobs (possibly) failed to complete correctly"
|
|
|
|
log "finished applying SSH controls remotely"
|
|
;;
|
|
2) # copy/distribute SSH controls
|
|
log "ACTION: copy/distribute SSH controls"
|
|
check_root_user && die "must NOT be run as user 'root'"
|
|
# build clients list (in array)
|
|
cat "${TARGETS_FILE}" | grep -v -E -e '^#' -e '^$' |\
|
|
{
|
|
I=0
|
|
set -A CLIENTS
|
|
while read LINE
|
|
do
|
|
CLIENTS[${I}]="${LINE}"
|
|
I=$(( I + 1 ))
|
|
done
|
|
}
|
|
# set max updates in background
|
|
COUNT=${MAX_BACKGROUND_PROCS}
|
|
for CLIENT in ${CLIENTS[@]}
|
|
do
|
|
distribute2host ${CLIENT} &
|
|
PID=$!
|
|
log "copying/distributing to ${CLIENT} in background [PID=${PID}] ..."
|
|
# add PID to list of all child PIDs
|
|
PIDS="${PIDS} ${PID}"
|
|
COUNT=$(( COUNT - 1 ))
|
|
if (( COUNT <= 0 ))
|
|
then
|
|
# wait until all background processes are completed
|
|
wait_for_children ${PIDS} || \
|
|
warn "$? background jobs (possibly) failed to complete correctly"
|
|
PIDS=''
|
|
# reset max updates in background
|
|
COUNT=${MAX_BACKGROUND_PROCS}
|
|
fi
|
|
done
|
|
# final wait for background processes to be finished completely
|
|
wait_for_children ${PIDS} || \
|
|
warn "$? background jobs (possibly) failed to complete correctly"
|
|
log "finished copying/distributing SSH controls"
|
|
;;
|
|
3) # create key fingerprints
|
|
check_root_user && die "must NOT be run as user 'root'"
|
|
log "ACTION: create key fingerprints into ${LOCAL_DIR}/fingerprints"
|
|
> "${LOCAL_DIR}/fingerprints"
|
|
|
|
# are keys stored in a file or a directory?
|
|
if [[ -n "${KEYS_DIR}" ]]
|
|
then
|
|
cat ${KEYS_DIR}/* | sort | while read LINE
|
|
do
|
|
update_fingerprints "${LINE}"
|
|
KEY_COUNT=$(( KEY_COUNT + 1 ))
|
|
done
|
|
else
|
|
while read LINE
|
|
do
|
|
update_fingerprints "${LINE}"
|
|
done < ${KEYS_FILE}
|
|
fi
|
|
log "${KEY_COUNT} public keys discovered with following bits distribution:"
|
|
log " 1024 bits: ${KEY_1024_COUNT}"
|
|
log " 2048 bits: ${KEY_2048_COUNT}"
|
|
log " 4096 bits: ${KEY_4096_COUNT}"
|
|
log " others : ${KEY_OTHER_COUNT}"
|
|
log "finished updating public key fingerprints"
|
|
;;
|
|
4) # apply SSH controls locally (root user)
|
|
log "ACTION: apply SSH controls locally"
|
|
( RC=0; ${LOCAL_DIR}/update_ssh.pl ${SSH_UPDATE_OPTS};
|
|
print "$?" > ${TMP_RC_FILE}; exit
|
|
) 2>&1 | logc
|
|
# fetch return code from subshell
|
|
RC="$(< ${TMP_RC_FILE})"
|
|
if (( RC ))
|
|
then
|
|
die "failed to apply SSH controls locally [RC=${RC}]"
|
|
else
|
|
log "finished applying SSH controls locally [RC=${RC}]"
|
|
fi
|
|
;;
|
|
5) # fix local directory structure/perms/ownerships
|
|
log "ACTION: fix local SSH controls repository"
|
|
check_root_user || die "must be run as user 'root'"
|
|
if (( FIX_CREATE ))
|
|
then
|
|
log "you requested to create directories (if needed)"
|
|
else
|
|
log "you requested NOT to create directories (if needed)"
|
|
fi
|
|
|
|
# check if the SSH control repo is already there
|
|
if [[ ${FIX_CREATE} = 1 && ! -d "${FIX_DIR}" ]]
|
|
then
|
|
# create stub directories
|
|
mkdir -p "${FIX_DIR}/holding" 2>/dev/null || \
|
|
warn "failed to create directory ${FIX_DIR}/holding"
|
|
mkdir -p "${FIX_DIR}/keys.d" 2>/dev/null || \
|
|
warn "failed to create directory ${FIX_DIR}/keys.d"
|
|
fi
|
|
# fix permissions & ownerships
|
|
if [[ -d "${FIX_DIR}" ]]
|
|
then
|
|
# updating default directories
|
|
chmod 755 "${FIX_DIR}" 2>/dev/null && \
|
|
chown root:sys "${FIX_DIR}" 2>/dev/null
|
|
if [[ -d "${FIX_DIR}/holding" ]]
|
|
then
|
|
chmod 2775 "${FIX_DIR}/holding" 2>/dev/null && \
|
|
chown root:${SSH_OWNER_GROUP} "${FIX_DIR}/holding" 2>/dev/null
|
|
fi
|
|
if [[ -d "${FIX_DIR}/keys.d" ]]
|
|
then
|
|
chmod 755 "${FIX_DIR}/keys.d" 2>/dev/null && \
|
|
chown root:sys "${FIX_DIR}/keys.d" 2>/dev/null
|
|
fi
|
|
# checking files in holding (keys.d/* are fixed by update_ssh.pl)
|
|
for FILE in access alias keys update_ssh.conf
|
|
do
|
|
if [[ -f "${FIX_DIR}/holding/${FILE}" ]]
|
|
then
|
|
chmod 660 "${FIX_DIR}/holding/${FILE}" 2>/dev/null && \
|
|
chown root:${SSH_OWNER_GROUP} "${FIX_DIR}/holding/${FILE}" 2>/dev/null
|
|
fi
|
|
done
|
|
for FILE in manage_ssh.sh update_ssh.pl
|
|
do
|
|
if [[ -f "${FIX_DIR}/holding/${FILE}" ]]
|
|
then
|
|
chmod 770 "${FIX_DIR}/holding/${FILE}" 2>/dev/null && \
|
|
chown root:${SSH_OWNER_GROUP} "${FIX_DIR}/holding/${FILE}" 2>/dev/null
|
|
fi
|
|
done
|
|
# log file
|
|
if [[ -f "${LOG_FILE}" ]]
|
|
then
|
|
chmod 664 "${LOG_FILE}" 2>/dev/null && \
|
|
chown root:${SSH_OWNER_GROUP} "${LOG_FILE}" 2>/dev/null
|
|
fi
|
|
# check for SELinux labels
|
|
case ${OS_NAME} in
|
|
*Linux*)
|
|
case "$(getenforce)" in
|
|
*Permissive*|*Enforcing*)
|
|
LINUX_VERSION=$(get_linux_version)
|
|
case "${LINUX_VERSION}" in
|
|
5)
|
|
chcon -R -t sshd_key_t "${FIX_DIR}/keys.d"
|
|
;;
|
|
6|7)
|
|
chcon -R -t ssh_home_t "${FIX_DIR}/keys.d"
|
|
;;
|
|
*)
|
|
chcon -R -t etc_t "${FIX_DIR}/keys.d"
|
|
;;
|
|
esac
|
|
;;
|
|
*Disabled*)
|
|
:
|
|
;;
|
|
esac
|
|
;;
|
|
*)
|
|
:
|
|
;;
|
|
esac
|
|
else
|
|
die "SSH controls repository at "${FIX_DIR}" does not exist?"
|
|
fi
|
|
log "finished applying fixes to the local SSH control repository"
|
|
;;
|
|
6) # fix remote directory structure/perms/ownerships
|
|
log "ACTION: fix remote SSH controls repository"
|
|
check_root_user && die "must NOT be run as user 'root'"
|
|
# derive SSH controls repo from $REMOTE_DIR:
|
|
# /etc/ssh_controls/holding -> /etc/ssh_controls
|
|
FIX_DIR="$(print ${REMOTE_DIR%/*})"
|
|
[[ -z "${FIX_DIR}" ]] && \
|
|
die "could not determine SSH controls repo path from \$REMOTE_DIR?"
|
|
# build clients list (in array)
|
|
cat "${TARGETS_FILE}" | grep -v -E -e '^#' -e '^$' |\
|
|
{
|
|
I=0
|
|
set -A CLIENTS
|
|
while read LINE
|
|
do
|
|
CLIENTS[${I}]="${LINE}"
|
|
I=$(( I + 1 ))
|
|
done
|
|
}
|
|
# set max updates in background
|
|
COUNT=${MAX_BACKGROUND_PROCS}
|
|
for CLIENT in ${CLIENTS[@]}
|
|
do
|
|
fix2host ${CLIENT} "${FIX_DIR}" &
|
|
PID=$!
|
|
log "copying/distributing to ${CLIENT} in background [PID=${PID}] ..."
|
|
# add PID to list of all child PIDs
|
|
PIDS="${PIDS} ${PID}"
|
|
COUNT=$(( COUNT - 1 ))
|
|
if (( COUNT <= 0 ))
|
|
then
|
|
# wait until all background processes are completed
|
|
wait_for_children ${PIDS} || \
|
|
warn "$? background jobs (possibly) failed to complete correctly"
|
|
PIDS=''
|
|
# reset max updates in background
|
|
COUNT=${MAX_BACKGROUND_PROCS}
|
|
fi
|
|
done
|
|
# final wait for background processes to be finished completely
|
|
wait_for_children ${PIDS} || \
|
|
warn "$? background jobs (possibly) failed to complete correctly"
|
|
log "finished applying fixes to the remote SSH control repository"
|
|
;;
|
|
7) # dump the configuration namespace
|
|
log "ACTION: dumping the global access namespace with resolved aliases ..."
|
|
${LOCAL_DIR}/update_ssh.pl --preview --global
|
|
log "finished dumping the global namespace"
|
|
;;
|
|
8) # check syntax of the access/alias/keys files
|
|
log "ACTION: syntax-checking the configuration files ..."
|
|
check_syntax
|
|
log "finished syntax-checking the configuration files"
|
|
;;
|
|
9) # make backup copy of configuration & keys files
|
|
log "ACTION: backing up the current configuration & keys files ..."
|
|
if [[ -d ${BACKUP_DIR} ]]
|
|
then
|
|
TIMESTAMP="$(date '+%Y%m%d-%H%M')"
|
|
BACKUP_TAR_FILE="${BACKUP_DIR}/backup_repo_${TIMESTAMP}.tar"
|
|
if [ \( -f ${BACKUP_TAR_FILE} \) -o \( -f "${BACKUP_TAR_FILE}.gz" \) ]
|
|
then
|
|
die "backup file ${BACKUP_TAR_FILE}(.gz) already exists"
|
|
fi
|
|
# keys files
|
|
if [[ -n "${KEYS_DIR}" ]]
|
|
then
|
|
log "$(tar -cvf ${BACKUP_TAR_FILE} ${KEYS_DIR} 2>/dev/null)"
|
|
else
|
|
log "$(tar -cvf ${BACKUP_TAR_FILE} ${KEYS_FILE} 2>/dev/null)"
|
|
fi
|
|
# configuration files
|
|
for FILE in "${LOCAL_DIR}/access" "${LOCAL_DIR}/alias ${LOCAL_DIR}/targets"
|
|
do
|
|
log "$(tar -rvf ${BACKUP_TAR_FILE} ${FILE} 2>/dev/null)"
|
|
done
|
|
log "$(gzip ${BACKUP_TAR_FILE} 2>/dev/null)"
|
|
log "resulting backup file is: $(ls -1 ${BACKUP_TAR_FILE}* 2>/dev/null)"
|
|
else
|
|
die "could not find backup directory ${BACKUP_DIR}. Host is not an SSH master?"
|
|
fi
|
|
log "finished backing up the current configuration & keys files"
|
|
;;
|
|
esac
|
|
|
|
# finish up work
|
|
do_cleanup
|
|
|
|
#******************************************************************************
|
|
# END of script
|
|
#******************************************************************************
|