Version bump

Allow using wildcards (i.e. * to match any character and ~ to match the
user's home directory) in inputs and ouput variables in config file

.gitignore

@@ -0,0 +1,3 @@
+.idea/
+__pycache__/
+test/

LICENSE

@@ -1,281 +1,622 @@
                     GNU GENERAL PUBLIC LICENSE
-                       Version 2, June 1991
+                       Version 3, 29 June 2007
 
- Copyright (C) 1989, 1991 Free Software Foundation, Inc., <http://fsf.org/>
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
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+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
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+  Each time you convey a covered work, the recipient automatically
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+
+  11. Patents.
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+work thus licensed is called the contributor's "contributor version".
+
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+  Each contributor grants you a non-exclusive, worldwide, royalty-free
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+
+  If, pursuant to or in connection with a single transaction or
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+
+  A patent license is "discriminatory" if it does not include within
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+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
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-excuse you from the conditions of this License.  If you cannot
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-If any portion of this section is held invalid or unenforceable under
+  13. Use with the GNU Affero General Public License.
-any particular circumstance, the balance of the section is intended to
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-It is not the purpose of this section to induce you to infringe any
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-to distribute software through any other system and a licensee cannot
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-This section is intended to make thoroughly clear what is believed to
+  14. Revised Versions of this License.
-be a consequence of the rest of this License.
 
-  8. If the distribution and/or use of the Program is restricted in
+  The Free Software Foundation may publish revised and/or new versions of
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-may add an explicit geographical distribution limitation excluding
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-
-  9. The Free Software Foundation may publish revised and/or new versions
-of the General Public License from time to time.  Such new versions will
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-Each version is given a distinguishing version number.  If the Program
+  Each version is given a distinguishing version number.  If the
-specifies a version number of this License which applies to it and "any
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-later version", you have the option of following the terms and conditions
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-either of that version or of any later version published by the Free
+option of following the terms and conditions either of that numbered
-Software Foundation.  If the Program does not specify a version number of
+version or of any later version published by the Free Software
-this License, you may choose any version ever published by the Free Software
+Foundation.  If the Program does not specify a version number of the
-Foundation.
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
 
-  10. If you wish to incorporate parts of the Program into other free
+  If the Program specifies that a proxy can decide which future
-programs whose distribution conditions are different, write to the author
+versions of the GNU General Public License can be used, that proxy's
-to ask for permission.  For software which is copyrighted by the Free
+public statement of acceptance of a version permanently authorizes you
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+to choose that version for the Program.
-make exceptions for this.  Our decision will be guided by the two goals
-of preserving the free status of all derivatives of our free software and
-of promoting the sharing and reuse of software generally.
 
-                            NO WARRANTY
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
 
-  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+  15. Disclaimer of Warranty.
-FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
-OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
-PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
-OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
-TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
-PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
-REPAIR OR CORRECTION.
 
-  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
-REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
-OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
-YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
-PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
-POSSIBILITY OF SUCH DAMAGES.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
 
                      END OF TERMS AND CONDITIONS
 
@@ -287,15 +628,15 @@ free software which everyone can redistribute and change under these terms.
 
   To do so, attach the following notices to the program.  It is safest
 to attach them to the start of each source file to most effectively
-convey the exclusion of warranty; and each file should have at least
+state the exclusion of warranty; and each file should have at least
 the "copyright" line and a pointer to where the full notice is found.
 
-    {description}
+    <one line to give the program's name and a brief idea of what it does.>
-    Copyright (C) {year}  {fullname}
+    Copyright (C) <year>  <name of author>
 
-    This program is free software; you can redistribute it and/or modify
+    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
+    the Free Software Foundation, either version 3 of the License, or
     (at your option) any later version.
 
     This program is distributed in the hope that it will be useful,
@@ -303,38 +644,31 @@ the "copyright" line and a pointer to where the full notice is found.
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
-    You should have received a copy of the GNU General Public License along
+    You should have received a copy of the GNU General Public License
-    with this program; if not, write to the Free Software Foundation, Inc.,
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
 Also add information on how to contact you by electronic and paper mail.
 
-If the program is interactive, make it output a short notice like this
+  If the program does terminal interaction, make it output a short
-when it starts in an interactive mode:
+notice like this when it starts in an interactive mode:
 
-    Gnomovision version 69, Copyright (C) year name of author
+    <program>  Copyright (C) <year>  <name of author>
-    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
     This is free software, and you are welcome to redistribute it
     under certain conditions; type `show c' for details.
 
 The hypothetical commands `show w' and `show c' should show the appropriate
-parts of the General Public License.  Of course, the commands you use may
+parts of the General Public License.  Of course, your program's commands
-be called something other than `show w' and `show c'; they could even be
+might be different; for a GUI interface, you would use an "about box".
-mouse-clicks or menu items--whatever suits your program.
 
-You should also get your employer (if you work as a programmer) or your
+  You should also get your employer (if you work as a programmer) or school,
-school, if any, to sign a "copyright disclaimer" for the program, if
+if any, to sign a "copyright disclaimer" for the program, if necessary.
-necessary.  Here is a sample; alter the names:
+For more information on this, and how to apply and follow the GNU GPL, see
-
+<https://www.gnu.org/licenses/>.
-  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
-  `Gnomovision' (which makes passes at compilers) written by James Hacker.
-
-  {signature of Ty Coon}, 1 April 1989
-  Ty Coon, President of Vice
-
-This General Public License does not permit incorporating your program into
-proprietary programs.  If your program is a subroutine library, you may
-consider it more useful to permit linking proprietary applications with the
-library.  If this is what you want to do, use the GNU Lesser General
-Public License instead of this License.
 
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

README.md

@@ -1,2 +1,51 @@
-# simple_backup
+simple_backup
-A simple backup script using rsync
+============
+A simple backup script
+
+## Description
+simple_backup is a Python script that allows you to backup your files.
+Parameters like input files/directories, output directory etc. can be specified in a configuration file, or on the command line.
+Run:
+
+```bash
+simple_backup -h
+```
+
+to print all possible command line options.
+
+## Dependencies
+The script uses rsync to actually run the backup, so you will have to install it on your system. For example on Arch Linux:
+
+```bash
+sudo pacman -Syu rsync
+```
+
+It's also required to have python-dotenv
+
+Optional dependencies are systemd-python to enable using systemd journal for logging, and dbus-python for desktop notifications.
+
+## Install
+To install the program, first clone the repository:
+
+```bash
+git clone https://github.com/Fuxino/simple_backup.git
+```
+
+Then install the tools required to build the package:
+
+```bash
+pip install --upgrade build wheel
+```
+
+Finally, run:
+
+```bash
+cd simple_backup
+python -m build --wheel
+python -m pip install dist/*.whl
+```
+
+For Arch Linux and Arch-based distros, two packages are available in the AUR (aur.archlinux.org):
+- **simple_backup** for the release version
+- **simple_backup-git** for the git version
+

config

@@ -1,15 +0,0 @@
-#Example config file for my_backup
-
-# WARNING: Values should NOT be quoted, e.g. use inputs=/some/dir instead of inputs="/some/dir"
-
-#Input directories. Use a comma to separate items
-inputs=/home/my_home,/etc
-
-#Output directory
-backup_dir=/media/Backup
-
-#Exclude patterns. Use a comma to separate items
-exclude=.gvfs,.cache*,[Cc]ache*,.thumbnails*,[Tt]rash*,*.backup*,*~,.dropbox*
-
-#Number of snapshots to keep (default: keep all)
-keep=

man/simple_backup.1

@@ -0,0 +1,86 @@
+.TH SIMPLE_BACKUP 1 2023-06-01 SIMPLE_BACKUP 3.2.6
+.SH NAME
+simple_backup \- Backup files and folders using rsync
+.SH SYNOPSIS
+.BR simple_backup
+\-h, \-\-help
+.PD 0
+.P
+.PD
+.BR simple_backup
+[\-c, \-\-config FILE]
+[\-i, \-\-input INPUT [INPUT...]]
+[\-o, \-\-output DIR]
+.PD 0
+.P
+.PD
+.RS 14 [\-e, \-\-exclude FILE|DIR|PATTERN [FILE|...]]
+[\-k, \-\-keep N]
+[\-s, \-\-checksum]
+[\-\-remove\-before\-backup]
+.RE
+.SH DESCRIPTION
+.BR simple_backup
+is a python script for performing backup of files and folders. It uses rsync to copy the files to the specified location.
+Parameters for the backup such as input files/directories, output location and files or folders to exclude can be specified
+in a configuration file (default location $HOME/.config/simple_backup/simple_backup.conf) or directly on the command line.
+Parameters specified on the command line will override those in the configuration file.
+.SH OPTIONS
+.TP
+.B \-h, \-\-help
+Print a short help message and exit
+.TP
+.B \-c, \-\-config FILE
+Specify the configuration file, useful to specify a different one from the default.
+.TP
+.B \-i, \-\-input INPUT [INPUT...]
+Specify the files and directories to backup. Multiple inputs can be specified, just separate them with a space.
+If filenames or paths contain spaces, don't forget to escape them, or to use single or double quotes around them.
+.TP
+.B \-o, \-\-output DIR
+Specify the directory where the files will be copied. The program will automatically create a subdirectory called
+\(aqsimple_backup\(aq (if it does not already exist) and inside this directory the actual backup directory (using
+the current date and time)
+.TP
+.B \-e, \-\-exclude FILE|DIR|PATTERN [FILE|...]]
+Specify files, directories or patterns to exclude from the backup. Matching files and directories will not be copied.
+Multiple elements can be specified, in the same way as for the \-\-input option
+.TP
+.B \-k, \-\-keep N
+Specify how many old backups (so excluding the current one) will be kept. The default behavior is to keep them all
+(same as N=\-1)
+.TP
+.B \-s, \-\-checksums
+Same as rsync option \(aq\-\-checksum\(aq, use checksums instead of mod\-time and size to skip files.
+.TP
+.B \-\-remove\-before\-backup
+Remove old backups (if necessary) before creating the new backup. Useful to free some space before performing the backup.
+Default behavior is to remove old backups after successfully completing the backup.
+.TP
+.B \-\-no\-syslog
+Don't use systemd journal for logging
+.SH CONFIGURATION
+An example configuration file is provided at \(aq/etc/simple_backup/simple_backup.conf\(aq. Copy it to the default location
+($HOME/.config/simple_backup) and edit it as needed.
+.SH EXIT STATUS
+.TP
+.B 0
+The backup was completed without errors
+.TP
+.B 1
+No valid inputs selected for backup
+.TP
+.B 2
+Backup failed because output directory for storing the backup does not exist
+.TP
+.B 3
+Permission denied to access the output directory
+.TP
+.B 4
+rsync error (rsync returned a non-zero value)
+.SH SEE ALSO
+.BR rsync (1)
+.SH AUTHORS
+.MT https://github.com/Fuxino
+Daniele Fucini
+.ME

pyproject.toml

@@ -0,0 +1,3 @@
+[build-system]
+requires = ['setuptools']
+build-backend = 'setuptools.build_meta'

setup.cfg

@@ -0,0 +1,38 @@
+[metadata]
+name = simple_backup
+version = attr: simple_backup.__version__
+description = Simple backup script using rsync
+long_description = file: README.md
+author = Daniele Fucini
+author_email = dfucini@gmail.com
+license = GPL3
+url = https://github.com/Fuxino/simple_backup
+classifiers =
+   Development Status :: 5 - Production/Stable
+   Environment :: Console
+   License :: OSI Approved :: GNU General Public License v3 (GPLv3)
+   Natural Language :: English
+   Operating System :: POSIX :: Linux
+   Programming Language :: Python :: 3.7
+   Programming Language :: Python :: 3.8
+   Programming Language :: Python :: 3.9
+   Programming Language :: Python :: 3.10
+   Programming Language :: Python :: 3.11
+   Topic :: System :: Archiving :: Backup
+
+[options]
+packages = simple_backup
+python_requires = >=3.7
+install_requires =
+   python-dotenv
+
+[options.extras_require]
+JOURNAL =
+    systemd-python
+NOTIFICATIONS =
+    dbus-python
+
+[options.entry_points]
+console_scripts =
+   simple_backup = simple_backup.simple_backup:simple_backup
+

simple_backup

@@ -1,437 +0,0 @@
-#!/bin/bash
-
-#Copyright 2015 Daniele Fucini <dfucini@gmail.com>
-
-#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 3 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.
-
-#You should have received a copy of the GNU General Public License
-#along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-#Version 1.2.2
-#Simple backup script. Reads options, sources and destination from a configuration file or standard input
-
-#Help function
-function help_function {
-   echo "simple_backup, version 1.2.3"
-   echo ""
-   echo "Usage: $0 [OPTIONS]"
-   echo ""
-   echo "Options:"
-   echo "-h, --help                             Print this help and exit."
-   echo "-c, --config      CONFIG_FILE          Use the specified configuration file"
-   echo "                                       instead of the default one."
-   echo "                                       All other options are ignored."
-   echo "-i, --input       INPUT [INPUT...]     Specify a file/dir to include in the backup."
-   echo "-d, --directory   DIR                  Specify the output directory for the backup."
-   echo "-e, --exclude     PATTERN [PATTERN...] Specify a file/dir/pattern to exclude from"
-   echo "                                       the backup."
-   echo "-k, --keep        NUMBER               Specify the number of old backups to keep."
-   echo "                                       Default: keep all."
-   echo "-u, --user        USER                 User performing the backup."
-   echo "                                       Default: current user."
-   echo "                                       WARNING: This currently doesn't work with"
-   echo "                                       other options!"
-   echo ""
-   echo "If no option is given, the program uses the default"
-   echo "configuration file: $HOMEDIR/.simple_backup/config."
-   echo ""
-   echo "Report bugs to dfucini@gmail.com"
-   exit 0
-}
-
-#Read configuration file
-function read_conf {
-   if [[ "$#" -eq 0 ]]; then
-      CONFIG="$HOMEDIR/.simple_backup/config"
-      
-      if [[ ! -f "$CONFIG" ]]; then
-         #If default config file doesn't exist, exit
-         echo "$(date): Backup failed (see errors.log)" >> $LOG
-         echo "Error: Configuration file not found" | tee $ERR
-         #If libnotify is installed, show desktop notification that backup failed
-         ! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Backup failed"
-
-         mv $LOG "$HOMEDIR/.simple_backup/simple_backup.log"
-         mv $ERR "$HOMEDIR/.simple_backup/errors.log"
-         mv $WARN "$HOMEDIR/.simple_backup/warnings.log"
-
-         exit 1
-      fi
-
-   else
-      CONFIG="$1"
-
-      if [[ ! -f "$CONFIG" ]]; then
-         #If the provided configuration file doesn't exist, exit
-         echo "$(date): Backup failed (see errors.log)" >> $LOG
-         echo "Error: Configuration file not found" | tee -a $ERR
-         #If libnotify is installed, show desktop notification that backup failed
-         ! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Backup failed"
-
-         mv $LOG "$HOMEDIR/.simple_backup/simple_backup.log"
-         mv $ERR "$HOMEDIR/.simple_backup/errors.log"
-         mv $WARN "$HOMEDIR/.simple_backup/warnings.log"
-
-         exit 1
-      fi
-
-   fi
-
-   #Create temporary files
-   INPUTS=$(mktemp)
-   EXCLUDE=$(mktemp)
-   BACKUP=$(mktemp)
-   NKEEP=$(mktemp)
-
-   #Parse the configuration file
-   awk -v INPUTS="$INPUTS" -v EXCLUDE="$EXCLUDE" -v BACKUP="$BACKUP" \
-       -v NKEEP="$NKEEP" -v UHOME="$HOMEDIR/" -F '[=,]' \
-      '$1=="inputs" { for ( i=2; i<=NF; i++ ) { sub(/^~\//,UHOME,$i); print $i > INPUTS } }
-       $1=="backup_dir" { sub(/^~\//,UHOME,$2); print $2 > BACKUP }
-       $1=="exclude" { for ( i=2; i<=NF; i++ ) { sub(/^~\//,UHOME,$i); print $i > EXCLUDE } }
-       $1=="keep" { if ( $2 != NULL ) { print $2 > NKEEP } }' $CONFIG
-
-   BACKUP_DEV=$(cat $BACKUP)
-   KEEP=$(cat $NKEEP)
-   
-   rm "$BACKUP"
-   rm "$NKEEP"
-
-   if [[ -z "$BACKUP_DEV" || ! -d "$BACKUP_DEV" ]]; then
-      #If the backup directory is not set or doesn't exist, exit
-      echo "$(date): Backup failed (see errors.log)" >> $LOG
-      echo "Error: Output folder \"$BACKUP_DEV\" not found" | tee -a $ERR
-      #If libnotify is installed, show desktop notification that backup failed
-      ! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Backup failed"
-   
-      mv $LOG "$HOMEDIR/.simple_backup/simple_backup.log"
-      mv $ERR "$HOMEDIR/.simple_backup/errors.log"
-      mv $WARN "$HOMEDIR/.simple_backup/warnings.log"
-
-      rm "$INPUTS"
-      rm "$EXCLUDE"
-
-      exit 1
-   fi
-
-   BACKUP_DIR=$BACKUP_DEV/simple_backup
-   DATE=$(date +%Y-%m-%d-%H:%M)
-
-   #Create the backup subdirectory using date
-   if [[ ! -d "$BACKUP_DIR" ]]; then
-      mkdir -p "$BACKUP_DIR/$DATE"
-   else
-   #If previous backup(s) exist(s), save link to the last backup
-      LAST_BACKUP=$(readlink -f "$BACKUP_DIR/last_backup")
-      mkdir "$BACKUP_DIR/$DATE"
-   fi
-
-   #Set the backup directory variable to the newly created subfolder
-   BACKUP_DIR="$BACKUP_DIR/$DATE"
-
-   n_in=$(cat $INPUTS | wc -l)
-   
-   return
-}
-
-#Parse options
-function parse_options {
-   i=1
-   n_in=0
-   
-   #Create a temporary file to store inputs
-   INPUTS=$(mktemp)
-   #Create temp file to store exclude patterns
-   EXCLUDE=$(mktemp)
-
-   while [[ "$#" -gt 0 ]]
-   do
-      var="$1"
-
-      case "$var" in
-         -h | --help)
-            help_function
-
-            rm $INPUTS
-            rm $EXCLUDE
-
-            exit 0
-            ;;
-
-         -i | --input)
-
-            while [[ "$#" -gt 1 && ! "$2" =~ ^- ]]
-            do
-               input="$2"
-
-               if [[ -z "$input" ]]; then
-                  echo "$(date): Backup failed (see errors.log)" >> $LOG
-                  echo "Error: bad options format" | tee -a $ERR
-                  #If libnotify is installed, show desktop notification that backup failed
-                  ! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Backup failed"
-
-                  mv $LOG "$HOMEDIR/.simple_backup/simple_backup.log"
-                  mv $ERR "$HOMEDIR/.simple_backup/errors.log"
-                  mv $WARN "$HOMEDIR/.simple_backup/warnings.log"
-
-                  rm $INPUTS
-                  rm $EXCLUDE
-
-                  exit 1
-               fi
-
-               if [[ ! -e "$input" ]]; then
-                 echo "Warning: input \"${INPUTS[$i]}\" not found. Skipping" | tee -a $WARN
-               else
-                  i=$((i+1))
-                  n_in=$((n_in+1))
-                  echo "$input" >> "$INPUTS"
-               fi
-
-               shift
-            done
-
-            ;;
-
-         -d | --directory)
-            BACKUP_DEV="$2"
-
-            if [[ -z "$BACKUP_DEV" || ! -d "$BACKUP_DEV" ]]; then
-               echo "$(date): Backup failed (see errors.log)" >> $LOG
-               echo "Error: output folder \"$BACKUP_DEV\" not found" | tee -a $ERR
-               #If libnotify is installed, show desktop notification that backup failed
-               ! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Backup failed"
-
-               mv $LOG "$HOMEDIR/.simple_backup/simple_backup.log"
-               mv $ERR "$HOMEDIR/.simple_backup/errors.log"
-               mv $WARN "$HOMEDIR/.simple_backup/warnings.log"
-
-               rm $INPUTS
-               rm $EXCLUDES
-
-               exit 1
-            fi
-
-            BACKUP_DIR="$BACKUP_DEV/simple_backup"
-            DATE=$(date +%Y-%m-%d-%H:%M)
-
-            #Create the backup subdirectory using date
-            if [[ ! -d "$BACKUP_DIR" ]]; then
-               mkdir -p "$BACKUP_DIR/$DATE"
-            else
-               #If previous backup(s) exist(s), save link to the last backup
-               LAST_BACKUP=$(readlink -f "$BACKUP_DIR/last_backup")
-               mkdir "$BACKUP_DIR/$DATE"
-            fi
-
-            #Set the backup directory variable to the newly created subfolder
-            BACKUP_DIR="$BACKUP_DIR/$DATE"
-            shift
-            ;;
-
-         -e | --exclude)
-            while [[ "$#" -gt 1 && ! "$2" =~ ^- ]]
-            do
-               echo "$2" >> "$EXCLUDE"
-               shift
-            done
-            ;;
-
-         -k | --keep)
-            KEEP="$2"
-            shift
-            ;;
-
-         -c | --config)
-               rm "$EXCLUDE"
-               rm "$INPUTS"
-
-            read_conf "$2"
-            return
-            ;;
-
-         -u | --user)
-               rm "$EXCLUDE"
-               rm "$INPUTS"
-
-               if [[ ! -d "/home/$2" ]]; then
-                  echo "$(date): Backup failed (see errors.log)" >> $LOG
-                  echo "Error: user $2 doesn't exist" | tee -a $ERR
-                  #If libnotify is installed, show desktop notification that backup failed
-                  ! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Backup failed"
-
-                  mv $LOG "HOMEDIR/.simple_backup/simple_backup.log"
-                  mv $ERR "HOMEDIR/.simple_bakup/errors.log"
-                  mv $WARN "HOMEDIR/.simple_backup/warnings.log"
-
-                  exit 1
-               fi
-
-               if [[ ! -d "/home/$2/.simple_backup" ]]; then
-                  mkdir "/home/$2/.simple_backup"
-
-                  echo "Created directory \"$HOMEDIR/.simple_backup\"." 
-                  echo "Copy there sample configuration and edit it"
-                  echo "to your needs before running the backup."
-
-                  exit 1
-               fi
-
-               HOMEDIR="/home/$2"
-               config="/home/$2/.simple_backup/config"
-               USER="$2"
-               
-               read_conf "$config"
-               
-               return
-            ;;
-
-         *)
-            echo "$(date): Backup failed (see errors.log)" >> $LOG
-            echo "Error: Option $1 not recognised. Use 'simple-backup -h' to see available options" | tee -a $ERR
-            #If libnotify is installed, show desktop notification that backup failed
-            ! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Backup failed"
-
-            mv $LOG "$HOMEDIR/.simple_backup/simple_backup.log"
-            mv $ERR "$HOMEDIR/.simple_backup/errors.log"
-            mv $WARN "$HOMEDIR/.simple_backup/warnings.log"
-
-            exit 1
-            ;;
-      esac
-
-      shift
-   done
-
-   return
-}
-
-#Create temporary log files
-LOG=$(mktemp)
-ERR=$(mktemp)
-WARN=$(mktemp)
-
-HOMEDIR="$HOME"
-
-#Check number of parameters
-if [[ "$#" -eq 0 ]]; then
-   if [[ ! -d "$HOMEDIR/.simple_backup" ]]; then
-      mkdir "$HOMEDIR/.simple_backup"
-
-      echo "Created directory \"$HOMEDIR/.simple_backup\"." 
-      echo "Copy there sample configuration and edit it"
-      echo "to your needs before running the backup."
-
-      exit 1
-   fi
-
-   read_conf
-else
-   parse_options $@
-fi
-
-if [[ -z $n_in || $n_in -eq 0 ]]; then
-   echo "$(date): Backup finished (no files copied)" >> $LOG
-   echo "Warning: no valid input selected. Nothing to do" | tee -a $WARN
-   #If libnotify is installed, show desktop notification that backup finished
-   ! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Backup finished (warnings)"
-               
-   mv $LOG "$HOMEDIR/.simple_backup/simple_backup.log"
-   mv $ERR "$HOMEDIR/.simple_backup/errors.log"
-   mv $WARN "$HOMEDIR/.simple_backup/warnings.log"
-
-   exit 0
-fi
-
-echo "$(date): Starting backup" > $LOG
-#If libnotify is installed, show desktop notification that backup is starting
-! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Starting backup"
-
-#If specified, keep the last n backups and remove the others. Default: keep all
-if [[ -n $KEEP ]]; then
-   N_BACKUP=$(ls -l $BACKUP_DEV/simple_backup | grep -c ^d)
-   N_BACKUP=$(($N_BACKUP-1))
-
-   if [[ $N_BACKUP -gt $KEEP ]]; then
-      echo "$(date): Removing old backups..." >> $LOG
-      REMOVE=$(mktemp)
-      find $BACKUP_DEV/simple_backup/* -maxdepth 0 -type d | sort | head -n $(($N_BACKUP - $KEEP)) >> $REMOVE
-
-      while read line
-      do
-         rm -r $line
-         echo "Removed backup: $line" >> $LOG
-      done<$REMOVE
-
-      rm $REMOVE  
-   fi
-      
-fi
-
-# Sort input files for rsync efficiency
-if [[ ! -z "$INPUTS" ]]; then
-   sort "$INPUTS" -o "$INPUTS"
-fi
-
-if [[ -z "$LAST_BACKUP" ]]; then
-   rsync -acrv -H -X -R --exclude-from="$EXCLUDE" --files-from="$INPUTS" / "$BACKUP_DIR" --ignore-missing-args >> $LOG 2>> $ERR
-else
-   rsync -acrv -H -X -R --link-dest="$LAST_BACKUP" --exclude-from="$EXCLUDE" --files-from="$INPUTS" / "$BACKUP_DIR" --ignore-missing-args >> $LOG 2>> $ERR
-fi
-
-#Update the logs
-if [[ $(cat $ERR | wc -l) -gt 0 ]]; then
-   echo "$(date): Backup finished with errors" >> $LOG
-   error_flag=1
-elif [[ $(cat $WARN | wc -l) -gt 0 ]]; then
-   echo "$(date): Backup finished with warnings" >> $LOG
-   error_flag=2
-else
-   echo "$(date): Backup finished" >> $LOG
-   error_flag=0
-fi
-
-#Fix ownership and permissions of log files if needed
-if [[ ! -z $USER ]]; then
-   chown $USER:$USER $LOG && chmod 644 $LOG
-   chown $USER:$USER $ERR && chmod 644 $ERR
-   chown $USER:$USER $WARN && chmod 644 $WARN
-fi
-
-#Copy log files in home directory
-mv $LOG "$HOMEDIR/.simple_backup/simple_backup.log"
-mv $ERR "$HOMEDIR/.simple_backup/errors.log"
-mv $WARN "$HOMEDIR/.simple_backup/warnings.log"
-
-if [[ ! -z "$EXCLUDE" ]]; then
-   rm "$EXCLUDE"
-fi
-
-if [[ ! -z "$INPUTS" ]]; then
-   rm "$INPUTS"
-fi
-
-if [[ -L "$BACKUP_DEV/simple_backup/last_backup" ]]; then
-   rm "$BACKUP_DEV/simple_backup/last_backup"
-fi
-
-BACKUP_DIR_FULL=$(readlink -f "$BACKUP_DIR")
-ln -sf "$BACKUP_DIR_FULL" "$BACKUP_DEV/simple_backup/last_backup"
-
-if [[ $error_flag -eq 0 ]]; then
-   ! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Backup finished"
-elif [[ $error_flag -eq 1 ]]; then
-   ! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Backup finished (errors)"
-else
-   ! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Backup finished (warnings)"
-fi
-
-exit 0

simple_backup/__init__.py

@@ -0,0 +1,3 @@
+"""Init."""
+
+__version__ = '3.4.0'

simple_backup/simple_backup.conf

@@ -0,0 +1,14 @@
+# Example config file for simple_backup
+
+[default]
+# Files and directories to backup. Multiple items can be separated using a comma (','). It is possible to use wildcards (i.e. '*' to match multiple characters and '~' for the user's home directory).
+inputs=/home/my_home,/etc
+
+# Output directory.
+backup_dir=/media/Backup
+
+# Files, directories and patterns to exclude from the backup. Multiple items can be separated using a comma.
+exclude=*.bak
+
+# Number of old backups (i.e. excluding the one that's being created) to keep (use -1 to keep all)
+keep=-1

simple_backup/simple_backup.py

@@ -0,0 +1,372 @@
+#!/usr/bin/python3
+
+# Import libraries
+import sys
+import os
+from functools import wraps
+from shutil import rmtree
+import argparse
+import configparser
+import logging
+from logging import StreamHandler
+from timeit import default_timer
+from subprocess import Popen, PIPE, STDOUT
+from datetime import datetime
+from tempfile import mkstemp
+from glob import glob
+
+from dotenv import load_dotenv
+
+try:
+    from systemd import journal
+except ImportError:
+    journal = None
+
+try:
+    import dbus
+except ImportError:
+    pass
+
+
+load_dotenv()
+euid = os.geteuid()
+
+if euid == 0:
+    user = os.getenv('SUDO_USER')
+    homedir = os.path.expanduser(f'~{user}')
+else:
+    user = os.getenv('USER')
+    homedir = os.getenv('HOME')
+
+logging.getLogger().setLevel(logging.DEBUG)
+logger = logging.getLogger(os.path.basename(__file__))
+c_handler = StreamHandler()
+
+c_handler.setLevel(logging.INFO)
+c_format = logging.Formatter('%(name)s - %(levelname)s - %(message)s')
+c_handler.setFormatter(c_format)
+logger.addHandler(c_handler)
+
+if journal:
+    j_handler = journal.JournalHandler()
+    j_handler.setLevel(logging.INFO)
+    j_format = logging.Formatter('%(levelname)s - %(message)s')
+    j_handler.setFormatter(j_format)
+    logger.addHandler(j_handler)
+
+
+def timing(_logger):
+    def decorator_timing(func):
+        @wraps(func)
+        def wrapper_timing(*args, **kwargs):
+            start = default_timer()
+
+            value = func(*args, **kwargs)
+
+            end = default_timer()
+
+            _logger.info(f'Elapsed time: {end - start:.3f} seconds')
+
+            return value
+
+        return wrapper_timing
+
+    return decorator_timing
+
+
+class MyFormatter(argparse.RawTextHelpFormatter, argparse.ArgumentDefaultsHelpFormatter):
+    pass
+
+
+class Backup:
+
+    def __init__(self, inputs, output, exclude, keep, options, remove_before=False):
+        self.inputs = inputs
+        self.output = output
+        self.exclude = exclude
+        self.options = options
+        self.keep = keep
+        self.remove_before = remove_before
+        self._last_backup = ''
+        self._output_dir = ''
+        self._inputs_path = ''
+        self._exclude_path = ''
+        self._err_flag = False
+
+    def check_params(self):
+        if self.inputs is None or len(self.inputs) == 0:
+            logger.info('No existing files or directories specified for backup. Nothing to do')
+
+            return 1
+
+        if self.output is None:
+            logger.critical('No output path specified. Use -o argument or specify output path in configuration file')
+
+            return 2
+
+        if not os.path.isdir(self.output):
+            logger.critical('Output path for backup does not exist')
+
+            return 2
+
+        self.output = os.path.abspath(self.output)
+
+        if self.keep is None:
+            self.keep = -1
+
+        return 0
+
+    # Function to create the actual backup directory
+    def create_backup_dir(self):
+        now = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
+        self._output_dir = f'{self.output}/simple_backup/{now}'
+
+        os.makedirs(self._output_dir, exist_ok=True)
+
+    def remove_old_backups(self):
+        try:
+            dirs = os.listdir(f'{self.output}/simple_backup')
+        except FileNotFoundError:
+            return
+
+        n_backup = len(dirs) - 1
+        count = 0
+
+        if n_backup > self.keep:
+            logger.info('Removing old backups...')
+            dirs.sort()
+
+            for i in range(n_backup - self.keep):
+                try:
+                    rmtree(f'{self.output}/simple_backup/{dirs[i]}')
+                    count += 1
+                except FileNotFoundError:
+                    logger.error(f'Error while removing backup {dirs[i]}. Directory not found')
+                except PermissionError:
+                    logger.error(f'Error while removing backup {dirs[i]}. Permission denied')
+
+            if count == 1:
+                logger.info(f'Removed {count} backup')
+            else:
+                logger.info(f'Removed {count} backups')
+
+    def find_last_backup(self):
+        try:
+            dirs = sorted([f.path for f in os.scandir(f'{self.output}/simple_backup') if f.is_dir(follow_symlinks=False)])
+        except FileNotFoundError:
+            logger.info('No previous backups available')
+
+            return
+        except PermissionError:
+            logger.critical('Cannot access the backup directory. Permission denied')
+
+            try:
+                notify('Backup failed (check log for details)')
+            except NameError:
+                pass
+
+            sys.exit(3)
+
+        try:
+            self._last_backup = dirs[-1]
+        except IndexError:
+            logger.info('No previous backups available')
+
+    # Function to read configuration file
+    @timing(logger)
+    def run(self):
+        logger.info('Starting backup...')
+
+        try:
+            notify('Starting backup...')
+        except NameError:
+            pass
+
+        self.find_last_backup()
+        self.create_backup_dir()
+
+        _, self._inputs_path = mkstemp(prefix='tmp_inputs', text=True)
+        _, self._exclude_path = mkstemp(prefix='tmp_exclude', text=True)
+
+        with open(self._inputs_path, 'w') as fp:
+            for i in self.inputs:
+                fp.write(i)
+                fp.write('\n')
+
+        with open(self._exclude_path, 'w') as fp:
+            if self.exclude is not None:
+                for e in self.exclude:
+                    fp.write(e)
+                    fp.write('\n')
+
+        if self.keep != -1 and self.remove_before:
+            self.remove_old_backups()
+
+        logger.info('Copying files. This may take a long time...')
+
+        if self._last_backup == '':
+            rsync = f'rsync {self.options} --exclude-from={self._exclude_path} ' +\
+                    f'--files-from={self._inputs_path} / "{self._output_dir}" ' +\
+                    '--ignore-missing-args'
+        else:
+            rsync = f'rsync {self.options} --link-dest="{self._last_backup}" --exclude-from=' +\
+                    f'{self._exclude_path} --files-from={self._inputs_path} / "{self._output_dir}" ' +\
+                    '--ignore-missing-args'
+
+        p = Popen(rsync, stdout=PIPE, stderr=STDOUT, shell=True)
+        output, _ = p.communicate()
+
+        if p.returncode != 0:
+            self._err_flag = True
+
+        output = output.decode("utf-8").split('\n')
+
+        logger.info(f'rsync: {output[-3]}')
+        logger.info(f'rsync: {output[-2]}')
+
+        if self.keep != -1 and not self.remove_before:
+            self.remove_old_backups()
+
+        os.remove(self._inputs_path)
+        os.remove(self._exclude_path)
+
+        logger.info('Backup completed')
+
+        if self._err_flag:
+            logger.warning('Some errors occurred (check log for details)')
+
+            try:
+                notify('Backup finished with errors (check log for details)')
+            except NameError:
+                pass
+
+            return 4
+        else:
+            try:
+                notify('Backup finished')
+            except NameError:
+                pass
+
+            return 0
+
+
+def _parse_arguments():
+    parser = argparse.ArgumentParser(prog='simple_backup',
+                                     description='Simple backup script written in Python that uses rsync to copy files',
+                                     epilog='Report bugs to dfucini<at>gmail<dot>com',
+                                     formatter_class=MyFormatter)
+
+    parser.add_argument('-c', '--config', default=f'{homedir}/.config/simple_backup/simple_backup.conf',
+                        help='Specify location of configuration file')
+    parser.add_argument('-i', '--input', nargs='+', help='Paths/files to backup')
+    parser.add_argument('-o', '--output', help='Output directory for the backup')
+    parser.add_argument('-e', '--exclude', nargs='+', help='Files/directories/patterns to exclude from the backup')
+    parser.add_argument('-k', '--keep', type=int, help='Number of old backups to keep')
+    parser.add_argument('-s', '--checksum', action='store_true',
+                        help='Use checksum rsync option to compare files (MUCH SLOWER)')
+    parser.add_argument('--remove-before-backup', action='store_true',
+                        help='Remove old backups before executing the backup, instead of after')
+    parser.add_argument('--no-syslog', action='store_true', help='Disable systemd journal logging')
+
+    args = parser.parse_args()
+
+    return args
+
+
+def _expand_inputs(inputs):
+    expanded_inputs = []
+
+    for i in inputs:
+        if i == '':
+            continue
+
+        i_ex = glob(os.path.expanduser(i.replace('~', f'~{user}')))
+
+        if len(i_ex) == 0:
+            logger.warning(f'No file or directory matching input {i}. Skipping...')
+        else:
+            expanded_inputs.extend(i_ex)
+
+    return expanded_inputs
+
+
+def _read_config(config_file):
+    if not os.path.isfile(config_file):
+        logger.warning(f'Config file {config_file} does not exist')
+
+        return None, None, None, None
+
+    config = configparser.ConfigParser()
+    config.read(config_file)
+
+    inputs = config.get('default', 'inputs')
+    inputs = inputs.split(',')
+    inputs = _expand_inputs(inputs)
+    inputs = list(set(inputs))
+    output = config.get('default', 'backup_dir')
+    output = os.path.expanduser(output.replace('~', f'~{user}'))
+    exclude = config.get('default', 'exclude')
+    exclude = exclude.split(',')
+    keep = config.getint('default', 'keep')
+
+    return inputs, output, exclude, keep
+
+
+def notify(text):
+    euid = os.geteuid()
+
+    if euid == 0:
+        uid = os.getenv('SUDO_UID')
+    else:
+        uid = os.geteuid()
+
+    os.seteuid(int(uid))
+    os.environ['DBUS_SESSION_BUS_ADDRESS'] = f'unix:path=/run/user/{uid}/bus'
+
+    obj = dbus.SessionBus().get_object('org.freedesktop.Notifications', '/org/freedesktop/Notifications')
+    obj = dbus.Interface(obj, 'org.freedesktop.Notifications')
+    obj.Notify('', 0, '', 'simple_backup', text, [], {'urgency': 1}, 10000)
+
+    os.seteuid(int(euid))
+
+
+def simple_backup():
+    args = _parse_arguments()
+
+    if args.no_syslog:
+        try:
+            logger.removeHandler(j_handler)
+        except NameError:
+            pass
+
+    inputs, output, exclude, keep = _read_config(args.config)
+
+    if args.input is not None:
+        inputs = args.input
+
+    if args.output is not None:
+        output = args.output
+
+    if args.exclude is not None:
+        exclude = args.exclude
+
+    if args.keep is not None:
+        keep = args.keep
+
+    if args.checksum:
+        backup_options = '-arcvh -H -X'
+    else:
+        backup_options = '-arvh -H -X'
+
+    backup = Backup(inputs, output, exclude, keep, backup_options, remove_before=args.remove_before_backup)
+
+    return_code = backup.check_params()
+
+    if return_code == 0:
+        return backup.run()
+
+    return return_code
+
+
+if __name__ == '__main__':
+    simple_backup()