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|
#!/bin/bash
# |\_
# B A C K U P N I N J A /()/
# `\|
#
# Copyright (C) 2004 riseup.net -- property is theft.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
#####################################################
## DEFAULTS
DEBUG=${DEBUG:=0}
CONFFILE="/etc/backupninja.conf"
USECOLOURS=1
#####################################################
## FUNCTIONS
function setupcolors() {
if [ "$USECOLOURS" == 1 ]
then
BLUE="\033[34;01m"
GREEN="\033[32;01m"
YELLOW="\033[33;01m"
PURPLE="\033[35;01m"
RED="\033[31;01m"
OFF="\033[0m"
CYAN="\033[36;01m"
fi
}
function run() {
RUNERROR=0
debug 0 "$@"
returnstring=`$@ 2>&1`
RUNERROR=$?
RUNERRORS=$[RUNERRORS+RUNERROR]
if [ "$RUNERROR" != 0 ]; then
debug 3 "Exitcode $RUNERROR returned when running: $@"
debug 3 "$returnstring"
else
debug 0 "$returnstring"
fi
return $RUNERROR
}
# We have the following debug levels:
# 0 - debug - blue
# 1 - normal messages - green
# 2 - warnings - yellow
# 3 - errors - orange
# 4 - fatal - red
# First variable passed is the error level, all others are printed
# if 1, echo out all warnings, errors, or fatal
# used to capture output from handlers
echo_debug_msg=0
function debug() {
[ ${#@} -gt 1 ] || return
TYPES=(Debug Info Warning Error Fatal)
COLOURS=($BLUE $GREEN $YELLOW $RED $PURPLE)
type=$1
colour=${COLOURS[$type]}
shift
print=$[4-type]
if [ "$print" -lt "$loglevel" -o "$DEBUG" == 1 ]; then
if [ -z "$logfile" ]; then
echo -e "${colour}${TYPES[$type]}: $@${OFF}" >&2
else
if [ "$DEBUG" == 1 -o "$type" == 4 ]; then
echo -e "${colour}${TYPES[$type]}: $@${OFF}" >&2
fi
echo -e "${colour}${TYPES[$type]}: $@${OFF}" >> $logfile
fi
fi
if [ "$echo_debug_msg" != "0" -a "$type" -gt "1" ]; then
echo -e "${TYPES[$type]}: $@"
fi
}
function fatal() {
debug 4 "$@"
exit 2
}
msgcount=0
function msg {
messages[$msgcount]=$1
let "msgcount += 1"
}
function setfile() {
CURRENT_CONF_FILE=$1
}
function setsection() {
CURRENT_SECTION=$1
}
#
# sets a global var with name equal to $1
# to the value of the configuration parameter $1
# $2 is the default.
#
function getconf() {
CURRENT_PARAM=$1
ret=`awk -f $scriptdir/parseini S=$CURRENT_SECTION P=$CURRENT_PARAM $CURRENT_CONF_FILE`
# if nothing is returned, set the default
if [ "$ret" == "" -a "$2" != "" ]; then
ret="$2"
fi
# replace * with %, so that it is not globbed.
ret="${ret//\\*/__star__}"
# this is weird, but single quotes are needed to
# allow for returned values with spaces. $ret is still expanded
# because it is in an 'eval' statement.
eval $1='$ret'
}
#####################################################
## MAIN
## process command line options
if [ "$1" == "--help" ]; then
HELP=1;DEBUG=1;loglevel=4
else
while getopts h,f:,d,t option
do
case "$option" in
h) HELP=1;DEBUG=1;loglevel=4;;
d) DEBUG=1;loglevel=4;;
f) CONFFILE="$OPTARG";;
t) test=1;DEBUG=1;;
esac
done
fi
setupcolors
## Print help
if [ "$HELP" == 1 ]; then
cat << EOF
$0 usage:
This script allows you to coordinate system backup by dropping a few
simple configuration files into /etc/backup.d/. In general, this script
is run from a cron job late at night.
The following options are available:
-h This help message
-d Run in debug mode, where all log messages are output to the current shell.
-f <file> Use <file> for the main configuration instead of /etc/backupninja.conf
-t Run in test mode, no actions are actually taken.
When using colored output, there are:
EOF
debug 0 "Debugging info (when run with -d)"
debug 1 "Informational messages (verbosity level 4)"
debug 2 "Warnings (verbosity level 3 and up)"
debug 3 "Errors (verbosity level 2 and up)"
debug 4 "Fatal, halting errors (always shown)"
exit 0
fi
## Load and confirm basic configuration values
# bootstrap
[ -r "$CONFFILE" ] || fatal "Configuration file $CONFFILE not found."
scriptdir=`grep scriptdirectory $CONFFILE | awk '{print $3}'`
[ -n "$scriptdir" ] || fatal "Cound not find entry 'scriptdirectory' in $CONFFILE."
[ -d "$scriptdir" ] || fatal "Script directory $scriptdir not found."
setfile $CONFFILE
# get global config options (second param is the default)
getconf configdirectory /etc/backup.d
getconf reportemail
getconf reportsuccess yes
getconf reportwarning yes
getconf loglevel 3
getconf logfile /var/log/backupninja.log
getconf SLAPCAT /usr/sbin/slapcat
getconf RDIFFBACKUP /usr/bin/rdiff-backup
getconf MYSQL /usr/bin/mysql
getconf MYSQLHOTCOPY /usr/bin/mysqlhotcopy
getconf MYSQLDUMP /usr/bin/mysqldump
getconf GZIP /bin/gzip
[ -d "$configdirectory" ] || fatal "Configuration directory '$configdirectory' not found."
[ `id -u` == "0" ] || fatal "Can only be run as root"
## Process each configuration file
debug 1 "====== starting at "`date`" ======"
# by default, don't make files which are world or group readable.
umask 077
for file in $configdirectory/*; do
[ -f $file ] || continue;
perms=`ls -ld $file`
perms=${perms:4:6}
if [ "$perms" != "------" ]; then
fatal "Configuration files must not be group or world readable! Dying on file $file"
fi
if [ `ls -ld $file | awk '{print $3}'` != "root" ]; then
fatal "Configuration files must be owned by root! Dying on file $file"
fi
suffix="${file##*.}"
base=`basename $file`
if [ "${base:0:1}" == "0" ]; then
debug 1 "Skipping $file"
continue
else
debug 1 "Processing $file"
fi
if [ -e "$scriptdir/$suffix" ]; then
setfile $file
echo_debug_msg=1
ret=`( . $scriptdir/$suffix $file )`
retcode="$?"
warnings=`echo $ret | grep -e "^Warning: " | wc -l`
errors=`echo $ret | grep -e "^Error: \|^Fatal: " | wc -l`
if [ $errors != 0 ]; then
msg "*failed* -- $file"
errormsg="$error\n== errors from $file ==\n\n$ret\n"
elif [ $warnings != 0 ]; then
msg "*warning* -- $file"
errormsg="$error\n== warnings from $file ==\n\n$ret\n"
elif [ $retcode == 0 ]; then
msg "success -- $file"
else
msg "unknown -- $file"
fi
echo_debug_msg=0
else
debug 3 "Can't process file '$file': no handler script for suffix '$suffix'"
msg "*missing handler* -- $file"
fi
done
## mail the messages to the report address
if [ "$reportemail" == "" ]; then doit=0
elif [ $errors != 0 ]; then doit=1
elif [ "$reportsuccess" == "yes" ]; then doit=1
elif [ "$reportwarning" == "yes" -a $warnings != 0 ]; then doit=1
else doit=0
fi
if [ $doit == 1 ]; then
hostname=`hostname`
{
for ((i=0; i < ${#messages[@]} ; i++)); do
echo ${messages[$i]}
done
echo -e "$errormsg"
} | mail $reportemail -s "backupninja: $hostname"
fi
debug 1 "====== finished at "`date`" ======"
############################################################
|