added scheduling (!) see readme.

[matthijs/upstream/backupninja.git] / backupninja

diff --git a/backupninja b/backupninja
index 921cb96754d3e76673b51ab080d2281bd359b9c4..c8764ab651d3ea3402d1a4192ee47d5070ab28fc 100755 (executable)
--- a/backupninja
+++ b/backupninja
@@ -133,6 +133,77 @@ function getconf() {
        eval $1='$ret'
 }
 
+#
+# enforces very strict permissions on configuration file $file.
+#
+
+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
+}
+
+# simple lowercase function
+function tolower() {
+       echo "$1" | tr [:upper:] [:lower:]
+}
+
+# simple to integer function
+function toint() {
+       echo "$1" | tr [:alpha:] -d 
+}
+
+#
+# function isnow(): returns 1 if the time/day passed as $1 matches
+# the current time/day.
+#
+# format is <day> at <time>:
+#   sunday at 16
+#   8th at 01
+#   everyday at 22
+#
+
+# we grab the current time once, since processing
+# all the configs might take more than an hour.
+nowtime=`date +%H`
+nowday=`date +%d`
+nowdayofweek=`date +%A`
+nowdayofweek=`tolower "$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
+
+       return 1
+}
 
 #####################################################
 ## MAIN
@@ -195,6 +266,8 @@ 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 SLAPCAT /usr/sbin/slapcat
 getconf RDIFFBACKUP /usr/bin/rdiff-backup
@@ -213,17 +286,12 @@ debug 1 "====== starting at "`date`" ======"
 # by default, don't make files which are world or group readable.
 umask 077
 
+errors=0
+
 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
+       check_perms $file
        suffix="${file##*.}"
        base=`basename $file`
        if [ "${base:0:1}" == "0" ]; then
@@ -235,7 +303,28 @@ for file in $configdirectory/*; do
 
        if [ -e "$scriptdir/$suffix" ]; then
                setfile $file
+
+               # skip over this config if "when" option
+               # is not set to the current time.
+               getconf when "$defaultwhen"
+               IFS=$'\t\n'
+               for w in $when; do
+                       IFS=$' \t\n'
+                       isnow "$w"
+                       ret=$?
+                       IFS=$'\t\n'
+                       if [ $ret == 0 ]; then
+                               debug 0 "skipping $file because it is not $w"
+                               continue
+                       else
+                               debug 0 "running $file because it is $w"
+                               continue
+                       fi              
+               done
+               IFS=$' \t\n'
+
                echo_debug_msg=1
+               # call the handler:
                ret=`( . $scriptdir/$suffix $file )`
                retcode="$?"
                warnings=`echo $ret | grep -e "^Warning: " | wc -l`