X-Git-Url: https://git.stderr.nl/gitweb?a=blobdiff_plain;f=backupninja;h=962ff899543336621a37896cf9204fc10a9613b8;hb=cc8aa6a27a68a8d8df9c29a937ac435883abfc8f;hp=236fb67b1aa0bee5d572e0c3fcb0d6b2a3cbb21e;hpb=ef78e14b29df0a9f010c3c2a07572bef5668d079;p=matthijs%2Fupstream%2Fbackupninja.git

diff --git a/backupninja b/backupninja
index 236fb67..962ff89 100755
--- a/backupninja
+++ b/backupninja
@@ -16,45 +16,35 @@
 # 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
+	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"
 }
 
-# We have the following debug levels:
+#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 message levels:
 # 0 - debug - blue
 # 1 - normal messages - green
 # 2 - warnings - yellow
@@ -66,33 +56,52 @@ function run() {
 # used to capture output from handlers
 echo_debug_msg=0
 
-function debug() {
+usecolor=yes
 
+function printmsg() {
 	[ ${#@} -gt 1 ] || return
 	 
-	TYPES=(Debug Info Warning Error Fatal)
-	COLOURS=($BLUE $GREEN $YELLOW $RED $PURPLE)
+	types=(Debug Info Warning Error Fatal)
 	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}" >> $logfile
-		fi
+	typestr=${types[$type]}
+	if [ "$usecolor" == "yes" ]; then
+		colors=($BLUE $GREEN $YELLOW $RED $PURPLE)
+		color=${colors[$type]}
+		endcolor=$OFF
 	fi
+	
+	shift
+	
 	if [ "$echo_debug_msg" != "0" -a "$type" -gt "1" ]; then
-		echo -e "${TYPES[$type]}: $@"
+		echo -e "$typestr: $@"
+	fi
+	
+	if [ "$debug" == 1 ]; then
+		echo -e "${color}$typestr: $@${endcolor}" >&2
+	fi
+	
+	if [ $print -lt $loglevel ]; then
+		if [ -w "$logfile" ]; then
+			echo -e "${color}$typestr: $@${endcolor}" >> $logfile
+		fi
 	fi
 }
 
+function debug() {
+	printmsg 0 "$@"
+}
+function info() {
+	printmsg 1 "$@"
+}
+function warning() {
+	printmsg 2 "$@"
+}
+function error() {
+	printmsg 3 "$@" 
+}
 function fatal() {
-	debug 4 "$@"
+	printmsg 4 "$@"
 	exit 2
 }
 
@@ -133,67 +142,204 @@ function getconf() {
 	eval $1='$ret'
 }
 
+#
+# enforces very strict permissions on configuration file $file.
+#
 
-#####################################################
-## MAIN
+function check_perms() {
+	local file=$1
+	local 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
+}
 
-## process command line options
+# simple lowercase function
+function tolower() {
+	echo "$1" | tr [:upper:] [:lower:]
+}
 
-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
+# simple to integer function
+function toint() {
+	echo "$1" | tr [:alpha:] -d 
+}
+
+#
+# function isnow(): returns 1 if the time/day passed as $1 matches
+# the current time/day.
+#
+# format is <day> at <time>:
+#   sunday at 16
+#   8th at 01
+#   everyday at 22
+#
 
-## Print help
+# we grab the current time once, since processing
+# all the configs might take more than an hour.
+nowtime=`date +%H`
+nowday=`date +%d`
+nowdayofweek=`date +%A`
+nowdayofweek=`tolower "$nowdayofweek"`
+
+function isnow() {
+	local when="$1"
+	set -- $when
+	whendayofweek=$1; at=$2; whentime=$3;
+	whenday=`toint "$whendayofweek"`
+	whendayofweek=`tolower "$whendayofweek"`
+	whentime=`echo "$whentime" | sed 's/:[0-9][0-9]$//'`
+
+	if [ "$whendayofweek" == "everyday" ]; then
+		whendayofweek=$nowdayofweek
+	fi
+
+	if [ "$whenday" == "" ]; then
+		if [ "$whendayofweek" != "$nowdayofweek" ]; then
+			whendayofweek=${whendayofweek%s}
+			if [ "$whendayofweek" != "$nowdayofweek" ]; then
+				return 0
+			fi
+		fi
+	elif [ "$whenday" != "$nowday" ]; then
+		return 0
+	fi
+
+	[ "$at" == "at" ] || return 0
+	[ "$whentime" == "$nowtime" ] || return 0
 
-if [ "$HELP" == 1 ]; then
-cat << EOF
+	return 1
+}
+
+function usage() {
+	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. 
+simple configuration files into /etc/backup.d/. Typically, this
+script is run hourly from cron.
 
 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.
-
+-h, --help           This usage message
+-d, --debug          Run in debug mode, where all log messages are
+                     output to the current shell.
+-f, --conffile FILE  Use FILE for the main configuration instead
+                     of /etc/backupninja.conf
+-t, --test           Run in test mode, no actions are actually taken.
+-n, --now            Perform actions now, instead of when they
+                     might be scheduled.
 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
+	debug=1
+	debug   "Debugging info (when run with -d)"
+	info    "Informational messages (verbosity level 4)"
+	warning "Warnings (verbosity level 3 and up)"
+	error   "Errors (verbosity level 2 and up)"
+	fatal   "Fatal, halting errors (always shown)"
+}
+
+function process_action() {
+	local file="$1"
+	local suffix="$2"
+
+	setfile $file
+
+	# skip over this config if "when" option
+	# is not set to the current time.
+	getconf when "$defaultwhen"
+	if [ "$processnow" == 1 ]; then
+		info "running $file because of --now"
+	else
+		IFS=$'\t\n'
+		for w in $when; do
+			IFS=$' \t\n'
+			isnow "$w"
+			ret=$?
+			IFS=$'\t\n'
+			if [ $ret == 0 ]; then
+				debug "skipping $file because it is not $w"
+				return
+			else
+				info "running $file because it is $w"
+			fi
+		done
+		IFS=$' \t\n'
+	fi
+	
+	echo_debug_msg=1
+	# call the handler:
+	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* -- $file"
+		errormsg="$errormsg\n== errors from $file ==\n\n$ret\n"
+	elif [ $warnings != 0 ]; then
+		msg "*warning* -- $file"
+		errormsg="$errormsg\n== warnings from $file ==\n\n$ret\n"
+	elif [ $retcode == 0 ]; then
+		msg "success -- $file"
+	else
+		msg "unknown -- $file"
+	fi
+	echo_debug_msg=0
+}
+
+#####################################################
+## MAIN
+
+setupcolors
+conffile="/etc/backupninja.conf"
+loglevel=3
+
+## process command line options
+
+while [ $# -ge 1 ]; do
+	case $1 in
+		-h|--help) usage;;
+		-d|--debug) debug=1;;
+		-t|--test) test=1;debug=1;;
+		-n|--now) processnow=1;;
+		-f|--conffile)
+			if [ -f $2 ]; then
+				conffile=$2
+			else
+				fatal "-f|--conffile option must be followed by an existing filename"
+				usage
+			fi
+			# we shift here to avoid processing the file path 
+			shift
+			;;
+		*)
+			fatal "Unknown option $1"
+			usage
+			;;
+	esac
+	shift
+done																										
 
 ## 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 $CONFFILE."
+[ -r "$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
+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 when "Everyday at 01:00"
+defaultwhen=$when
 getconf logfile /var/log/backupninja.log
+getconf usecolors "yes"
 getconf SLAPCAT /usr/sbin/slapcat
 getconf RDIFFBACKUP /usr/bin/rdiff-backup
 getconf MYSQL /usr/bin/mysql
@@ -202,70 +348,59 @@ 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"
+
+if [ "$UID" != "0" ]; then
+	echo "$0 can only be run as root"
+	exit 1
+fi
 
 ## Process each configuration file
 
-debug 1 "====== starting at "`date`" ======"
+info "====== starting at "`date`" ======"
 
 # by default, don't make files which are world or group readable.
 umask 077
 
-for file in $configdirectory/*; do	
-	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
+errors=0
+
+for file in $configdirectory/*; do
+	[ -f $file ] || continue;
+
+	check_perms $file
 	suffix="${file##*.}"
 	base=`basename $file`
 	if [ "${base:0:1}" == "0" ]; then
-		debug 1 "Skipping $file"
+		info "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* -- $file"
-			error="$error\n== errors from $file ==\n\n$ret\n"
-		elif [ $warnings != 0 ]; then
-			msg "*warning* -- $file"
-			error="$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
+		process_action $file $suffix
 	else
-		debug 3 "Can't process file '$file': no handler script for suffix '$suffix'"
+		error "Can't process file '$file': no handler script for suffix '$suffix'"
 		msg "*missing handler* -- $file"
 	fi
 done
 
 ## mail the messages to the report address
 
-if [ "$reportemail" != "" ]; then
+if [ "$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 "$error"
+		echo -e "$errormsg"
 	} | mail $reportemail -s "backupninja: $hostname"
 fi
 
-debug 1 "====== finished at "`date`" ======"
+info "====== finished at "`date`" ======"
 
 ############################################################