#!/bin/bash
|
|
################################################################################
|
# #
|
# Author: Patrick Ditzel (patrick@central-computer.de) #
|
# Lizenz: GNU GENERAL PUBLIC LICENSE v3 #
|
# #
|
################################################################################
|
|
################################################################################
|
# Set up the backupenvironment and "global" functions
|
################################################################################
|
|
INSTALLATION_PATH_PREFIX=/usr/local
|
|
function set_config {
|
if [ -r /etc/dbb.cfg ]; then
|
# Check if configuration is found in /etc. If yes set configvar
|
BACKUPCFG=/etc/dbb.cfg
|
elif [ -r ~/.dbb.cfg ]; then
|
# If config is found in the backupuser home directory set it into the configvar
|
BACKUPCFG=~/.dbb.cfg
|
else
|
echo "No configuration file is found, please create one" | /usr/bin/logger -s -i -t databasebackup
|
fi
|
}
|
|
function check_backup_env {
|
# Check if the configuration exists and is not empty
|
if [ -r $BACKUPCFG ] && [ -s $BACKUPCFG ]; then
|
# If true then read it
|
source $BACKUPCFG
|
if [ -d $BACKUPCFG.d ]; then
|
if [ ! "$(find $BACKUPCFG.d/*.cfg | cut -d "." -f1)" ]; then
|
echo "Configurationdirectory for modules exist but it is empty" | /usr/bin/logger -s -i -t databasebackup
|
else
|
echo "Read module configuration" | /usr/bin/logger -s -i -t databasebackup
|
for MODULECFG in $(find $BACKUPCFG.d/*.cfg | cut -d "/" -f4 | cut -d "." -f1); do source $BACKUPCFG.d/$MODULECFG.cfg; done
|
fi
|
else
|
echo "Configurationdirectory does not exists, can't load any configurationfile" | /usr/bin/logger -s -i -t databasebackup
|
fi
|
else
|
# If not throw an errormessage
|
echo "The configfile does not exists or is empty" | /usr/bin/logger -s -i -t databasebackup
|
echo "Please create the $BACKUPCFG or write your settings into" | /usr/bin/logger -s -i -t databasebackup
|
exit 1
|
fi
|
if [ "$ENABLE_DEBUG" = "TRUE" ]; then
|
# If debugoutput is enabled show the configurationfile without comments
|
echo "##################################################################################" | /usr/bin/logger -s -i -t databasebackup
|
while read -r configline; do
|
echo "$configline" | grep -v '^$' | grep -v '^#' | /usr/bin/logger -s -i -t databasebackup
|
done <<< "$(cat $BACKUPCFG)"
|
for MODCFGLINE in $(find $BACKUPCFG.d/*.cfg | cut -d "." -f1); do
|
echo "Debuginfo for $MODCFGLINE" | /usr/bin/logger -s -i -t databasebackup
|
while read -r modconfigline; do
|
echo "$modconfigline" | grep -v '^$' | grep -v '^#' | /usr/bin/logger -s -i -t databasebackup
|
done <<< "$(cat $BACKUPCFG.d/$MODCFGLINE.cfg)"
|
done
|
echo "################################################################################" | /usr/bin/logger -s -i -t databasebackup
|
fi
|
# Check if the target directory for the backupfiles exists
|
if [ ! -d "$BACKUP_DIR" ]; then
|
# If not create it
|
mkdir -p "$BACKUP_DIR"
|
fi
|
# Check if the directory for tempfiles exists
|
if [ ! -d "$TMP_DIR" ]; then
|
# If not create it
|
mkdir -p "$TMP_DIR"
|
fi
|
|
}
|
|
function set_logger {
|
# Check if log to syslog is enabled
|
if [ "$ENABLE_SYSLOG" = "TRUE" ]; then
|
# If true then define the logger
|
LOGGER="/usr/bin/logger -s -i -t databasebackup"
|
else
|
# If not cat it out on stdout
|
LOGGER="/bin/cat"
|
fi
|
}
|
|
function debug {
|
DEBUGMSG=$1
|
if [ "$ENABLE_DEBUG" = "TRUE" ]; then
|
echo "<debuginformation>: $DEBUGMSG" | $LOGGER
|
fi
|
}
|
|
function load_dbbmodules {
|
# Function to load the dbb-module corresponding to the config-files found in the dbb.cfg.d-directory
|
debug "function: load_dbbmodules, VAR BACKUPCFG.d: $BACKUPCFG.d"
|
debug "function: load_dbbmodules, VAR INSTALLATION_PATH_PREFIX/lib/dbb-modules: $INSTALLATION_PATH_PREFIX/lib/modules"
|
if [ -d $BACKUPCFG.d ] && [ -d $INSTALLATION_PATH_PREFIX/lib/dbb-modules ]; then
|
if [ ! "$(ls -A $BACKUPCFG.d)" ] && [ ! "$(ls -A $INSTALLATION_PATH_PREFIX/lib/dbb-modules)" ]; then
|
debug "Configurationdirectory or directory for modules exist but it is empty"
|
else
|
for MODULE in $(find $BACKUPCFG.d/*.cfg | cut -d "/" -f4 | cut -d "." -f1); do
|
source $INSTALLATION_PATH_PREFIX/lib/dbb-modules/$MODULE
|
debug "Load module: $INSTALLATION_PATH_PREFIX/lib/dbb-modules/$MODULE"
|
# Check the dependenncies defined in the modulefunction -> should be defined in configfiles
|
check-$MODULE-deps
|
done
|
fi
|
else
|
debug "Configurationdirectory does nort exists, can't load any configurationfile"
|
fi
|
}
|
|
function is_interactive {
|
SCRPT=$(basename "$0")
|
debug "$SCRPT"
|
|
if [ "$SCRPT" = "dbbi" ]; then
|
# If the script is called for interactive use we have to chenge the calls of the functions
|
# Setting the $LOGGER für interactive use to /bin/cat
|
LOGGER="/bin/cat"
|
# Here we set teh environment variable for interactive use
|
debug "dbbi (DataBase Interactive Backup) is called"
|
RADIOACTIVE=TRUE
|
elif [ "$SCRPT" = "dbb" ]; then
|
# Set the $LOGGER
|
LOGGER="/usr/bin/logger -s -i -t databasebackup"
|
# If the script is used noninteractive we have also to set the environmet variable with this information
|
debug "dbb (DataBase Backup) is called"
|
RADIOACTIVE=FALSE
|
# unset the $LOGGER because this will be set later within the informatione in the configfile
|
unset LOGGER
|
else
|
# If the switch between interactive and noninteractive does not work: tell it but before set the $LOGGER
|
LOGGER="/usr/bin/logger -s -i -t databasebackup"
|
debug "An error occured - don't know if to use interactive or noninteractive"
|
exit 1
|
fi
|
}
|
|
function backup_file_handler {
|
# translate the vars to make it more readable
|
BFH_TMP_DIR=$1
|
BFH_BACKUPDIR_DIR=$2
|
BFH_FILE=$3
|
# If enabled put out some debug infos
|
debug "BFH_TMP_DIR: $BFH_TMP_DIR"
|
debug "BFH_BACKUPDIR_DIR: $BFH_BACKUPDIR_DIR"
|
debug "FILE: $BFH_FILE"
|
# Check if the script should keep a filehistorie
|
if [ "$KEEP_BACKUP_FILES" = "TRUE" ]; then
|
debug "Keep history"
|
# Set some vars to manage the files
|
BACKUP_DAY=$(date +%x)
|
REMOVE_NUMBER=$(( $BACKUP_FILES_DAYS + 1 ))
|
BFH_FILE_PREFIX_NAME_TO_REMOVE=$(date -d "$REMOVE_NUMBER days ago" "+%x")
|
# ... and if it is turned on give some debig info
|
debug "BACKUP_DAY: $BACKUP_DAY"
|
debug "REMOVE_NUMBER: $REMOVE_NUMBER"
|
debug "FILE_PREFIX_NAME_TO_REMOVE: $BFH_FILE_PREFIX_NAME_TO_REMOVE-$BFH_FILE"
|
# Check if there is an backupfile from the current day
|
if [ -f "$BFH_BACKUPDIR_DIR"/"$BACKUP_DAY"-"$BFH_FILE" ]; then
|
# If yes append miniutes and seconds to the date-profix of the filename
|
debug "File $BFH_BACKUPDIR_DIR/$BACKUP_DAY-$BFH_FILE already exists. Rename the new one."
|
DATE_TIME_SUFFIX=$(date +%H%M%S)
|
# ... and move it into the targetdir
|
mv "$BFH_TMP_DIR"/"$BFH_FILE" "$BFH_BACKUPDIR_DIR"/"$BACKUP_DAY"-"$DATE_TIME_SUFFIX"-"$BFH_FILE"
|
else
|
# If there is no backupfile of the current day move it to the backupfolder
|
mv "$BFH_TMP_DIR"/"$BFH_FILE" "$BFH_BACKUPDIR_DIR"/"$BACKUP_DAY"-"$BFH_FILE"
|
fi
|
# Check if there are files older then the days to keep set in the config
|
if [ -f "$BFH_BACKUPDIR_DIR"/"$BFH_FILE_PREFIX_NAME_TO_REMOVE"-"$BFH_FILE" ]; then
|
# if yes remove it
|
rm "$BFH_BACKUPDIR_DIR"/"$BFH_FILE_PREFIX_NAME_TO_REMOVE"-"$BFH_FILE"
|
# Also remove the files with the extended prefix in the name
|
# If there is ab file with the extende prefix then there has to be a file with tne normal prefix
|
rm "$BFH_BACKUPDIR_DIR"/"$BFH_FILE_PREFIX_NAME_TO_REMOVE"?????-"$BFH_FILE"
|
else
|
# If no file exists do nothing but some debuginfo
|
debug "File $BFH_BACKUPDIR_DIR/$BFH_FILE_PREFIX_NAME_TO_REMOVE-$BFH_FILE does not exists, so can not remove it."
|
fi
|
else
|
# If we do not keep a filehistory do the following
|
# Check if the targefile exists
|
if [ -f "$BFH_BACKUPDIR_DIR"/"$BFH_FILE" ]; then
|
debug "$BFH_FILE exists ... make a diff"
|
# Check if there are differences betwenn last backup and the actual one
|
diff "$BFH_TMP_DIR"/"$BFH_FILE" "$BFH_BACKUPDIR_DIR"/"$BFH_FILE" > /dev/null 2>&1
|
if [ $? -ne 0 ]; then
|
# If yes then move it to the backupfolder
|
debug "Differences found between old and new $BFH_FILE -> moving to BACKUP_DIR"
|
mv "$BFH_TMP_DIR"/"$BFH_FILE" "$BFH_BACKUPDIR_DIR"/"$BFH_FILE"
|
else
|
# If not do nothing
|
debug "No differences found between old an new $BFH_FILE"
|
fi
|
else
|
# If there is a new databasedumpfile move it to the backupfolder
|
debug "New Backupfile $BFH_FILE -> moving to $BFH_BACKUPDIR_DIR"
|
mv "$BFH_TMP_DIR"/"$BFH_FILE" "$BFH_BACKUPDIR_DIR"/"$BFH_FILE"
|
fi
|
fi
|
}
|
|
function check_global_deps {
|
# Check the dependencies for the global part of dbb
|
if [ ! -e /usr/bin/sudo ]; then
|
debug "It seems that you dont have sudo installed. Please install sudo and restart"
|
exit 1
|
else
|
debug "Global dependencies are OK."
|
fi
|
}
|
|
################################################################################
|
|
# The mainfunktion
|
function main {
|
# Check if the script runs interactive or not
|
is_interactive
|
if [ "$RADIOACTIVE" = "TRUE" ]; then
|
debug "Unsing dbbi (dbb interactive = dbbi) is for future use"
|
fi
|
if [ "$RADIOACTIVE" = "FALSE" ]; then
|
# Set up the configuration for the noninteractive mode
|
set_config
|
# Configure logging (from configurationfil)e
|
set_logger
|
# Check if the backupenvironment is setup properly
|
check_backup_env
|
debug "Check global dependencies"
|
check_global_deps
|
debug "Load dbb-modules"
|
load_dbbmodules
|
# Run modul-main-functions
|
for MODULEMAIN in $(find $BACKUPCFG.d/*.cfg | cut -d "/" -f4 | cut -d "." -f1); do
|
debug "run $MODULEMAIN-main - function of module $MODULEMAIN"
|
$MODULEMAIN-main
|
done
|
# The final action: remove the dumps
|
rm -rf "$TMP_DIR"
|
fi
|
|
}
|
|
main
|
