#!/bin/bash

  # # # # # # # # # # # # # # # #
  #                             #
  #    DeepSpace File Backup    #
  #            v0.1             #
  #    david@socialnerds.org    #
  #                             #
  # # # # # # # # # # # # # # # #

## README SECTION
##
## nothing to read yet :-)
##
##

# definitions
configfile="/srv/scripts/filebackup.conf" # use absolut path
mountpath="/mnt"
backuppath="/srv/filebackup"

# gen timestamp
timestamp=$(echo $(date "+%d_%m_%C%y"))

# am i root
if [ "$(whoami)" != "root" ]; then
    echo "error: only root can do this" 
    exit 1;
fi

# starting message with timestamp
echo
echo "info: starting deepspace filebackup on $timestamp"
echo

# check if configfile is there and readable
if [ -r $configfile ]; then
    # read configfile
    i=1
    while read line; do
        # check if first letter is a #
        fletter=${line:0:1}
        if [ -z "$line" ]; then
            :
            #echo "line $i is empty"
        else
            if [ $fletter == "#" ]; then
                :
                #echo "line $i a comment"
            else
                if [[ $line != *"@"*":"*";"* ]]; then
                    echo "error: line $i is not correct formated"
                else
                    echo "info: reading config (line $i)"
                    userindex=`expr index "$line" @`
                    let userindex--
                    user=${line:0:$userindex}
                    #echo "user: $user"
                    hostindex=`expr index "$line" :`
                    let hostindex--
                    let userindex++
                    host=${line:$userindex:$(($hostindex-$userindex))}
                    #echo "host: $host"
                    passindex=`expr index "$line" ";"`
                    share=${line:$(($hostindex+1)):$(($passindex-$hostindex-2))}
                    #echo "share: $share"
                    pass=${line:$passindex}
                    #echo "password: $pass"

                    # check for mountpoint
                    if [ -d $mountpath/$i ]; then
                        echo "info: $mountpath/$i already exists"
                    else
                        mkdir -p $mountpath/$i
                    fi
                    echo "info: mounting $host$share to $mountpath/$i"
                    mount -t cifs -o username=$user,password=$pass //$host$share $mountpath/$i
                    # do backup
                    echo "info: creating destination folders"
                    mkdir -p $backuppath/$timestamp/$host$share/
                    echo "info: starting rsync job"
                    rsync -r $mountpath/$i/* $backuppath/$timestamp/$host$share/
                    # unmounting share
                    echo "info: unmounting $host$share"
                    umount $mountpath/$i
                    echo "info: backup done, please check if it's really there"
                    echo
                fi
            fi
        fi
        let i++
    done < $configfile
else
    echo "error: no configfile found"
    exit 1
fi

exit 0