Fix code with autopep8

If allowed by the remote server, try using sudo to remove
old backups (rm needs to be allowed in sudoers to run
without password)

.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/>
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ 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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+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
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+any patent claim is infringed by making, using, selling, offering for
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+
+  11. Patents.
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+
+  If you convey a covered work, knowingly relying on a patent license,
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+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
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+consistent with the requirements of this License, to extend the patent
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+actual knowledge that, but for the patent license, your conveying the
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+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
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+receiving the covered work authorizing them to use, propagate, modify
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+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
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+to the third party based on the extent of your activity of conveying
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+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+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
 otherwise) that contradict the conditions of this License, they do not
-excuse you from the conditions of this License.  If you cannot
-distribute so as to satisfy simultaneously your obligations under this
-License and any other pertinent obligations, then as a consequence you
-may not distribute the Program at all.  For example, if a patent
-license would not permit royalty-free redistribution of the Program by
-all those who receive copies directly or indirectly through you, then
-the only way you could satisfy both it and this License would be to
-refrain entirely from distribution of the Program.
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
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+License would be to refrain entirely from conveying the Program.
 
-If any portion of this section is held invalid or unenforceable under
-any particular circumstance, the balance of the section is intended to
-apply and the section as a whole is intended to apply in other
-circumstances.
+  13. Use with the GNU Affero General Public License.
 
-It is not the purpose of this section to induce you to infringe any
-patents or other property right claims or to contest validity of any
-such claims; this section has the sole purpose of protecting the
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-through that system in reliance on consistent application of that
-system; it is up to the author/donor to decide if he or she is willing
-to distribute software through any other system and a licensee cannot
-impose that choice.
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
 
-This section is intended to make thoroughly clear what is believed to
-be a consequence of the rest of this License.
+  14. Revised Versions of this License.
 
-  8. If the distribution and/or use of the Program is restricted in
-certain countries either by patents or by copyrighted interfaces, the
-original copyright holder who places the Program under this License
-may add an explicit geographical distribution limitation excluding
-those countries, so that distribution is permitted only in or among
-countries not thus excluded.  In such case, this License incorporates
-the limitation as if written in the body of this License.
-
-  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
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
 be similar in spirit to the present version, but may differ in detail to
 address new problems or concerns.
 
-Each version is given a distinguishing version number.  If the Program
-specifies a version number of this License which applies to it and "any
-later version", you have the option of following the terms and conditions
-either of that version or of any later version published by the Free
-Software Foundation.  If the Program does not specify a version number of
-this License, you may choose any version ever published by the Free Software
-Foundation.
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+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
-programs whose distribution conditions are different, write to the author
-to ask for permission.  For software which is copyrighted by the Free
-Software Foundation, write to the Free Software Foundation; we sometimes
-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.
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
 
-                            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
-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.
+  15. Disclaimer of Warranty.
 
-  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
-REDISTRIBUTE 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.
+  THERE IS NO 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.
+
+  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}
-    Copyright (C) {year}  {fullname}
+    <one line to give the program's name and a brief idea of what it does.>
+    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
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 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
-when it starts in an interactive mode:
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
 
-    Gnomovision version 69, Copyright (C) year name of author
-    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    <program>  Copyright (C) <year>  <name of author>
+    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
-be called something other than `show w' and `show c'; they could even be
-mouse-clicks or menu items--whatever suits your program.
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
 
-You should also get your employer (if you work as a programmer) or your
-school, if any, to sign a "copyright disclaimer" for the program, if
-necessary.  Here is a sample; alter the names:
-
-  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.
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
 
+  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>.

PKGBUILD

@@ -1,32 +1,40 @@
-#Arch Linux PKGBUILD
-#
-#Maintainer: Daniele Fucini <dfucini@gmail.com>
-#
+# PKGBUILD
 
-pkgname=simple-backup
-pkgver=1.4.r0.g97d1a14
-pkgrel=1
+# Maintainer: Daniele Fucini <dfucini [at] gmail [dot] com>
+
+pkgname=simple_backup
 pkgdesc='Simple backup script that uses rsync to copy files'
+pkgver=4.1.6
+pkgrel=1
+url="https://git.shouldnt.work/fuxino/${pkgname}"
 arch=('any')
-url="https://github.com/Fuxino"
-license=('GPL3')
-makedepends=('git')
-depends=('python3'
-         'rsync')
-install=${pkgname}.install
-source=(git+https://github.com/Fuxino/${pkgname}.git
-        config)
-sha256sums=('SKIP'
-            'd8b88cbb4e6d9cae68c1605496880065337484dff8ee4c06dce2578357e95574')
+license=('GPL-3.0-or-later')
+makedepends=('git'
+             'python-setuptools'
+             'python-build'
+             'python-installer'
+             'python-wheel')
+depends=('python>=3.10'
+         'rsync'
+         'python-dotenv')
+optdepends=('python-systemd: use systemd log'
+            'python-dbus: for desktop notifications'
+            'python-paramiko: for remote backup through ssh')
+conflicts=('simple_backup-git')
+source=(git+${url}?signed#tag=${pkgver})
+validpgpkeys=('7E12BC1FF3B6EDB2CD8053EB981A2B2A3BBF5514')
+sha256sums=('b3b29d9e2e1b7b949e95674d9a401e8eeb0d5f898e8450473dce94f799ee9df3')
 
-pkgver() 
-{  
-   cd "$pkgname"
-   git describe --long --tags | sed 's/\([^-]*-g\)/r\1/;s/-/./g'
+build()
+{
+    cd ${srcdir}/${pkgname}
+    python -m build --wheel --no-isolation
 }
 
 package()
 {
-   install -Dm755 "${srcdir}/${pkgname}/${pkgname}" "${pkgdir}/usr/bin/${pkgname}"
-   install -Dm644 "${srcdir}/config" "${pkgdir}/etc/${pkgname}/config"
+    cd ${srcdir}/${pkgname}
+    python -m installer --destdir=${pkgdir} dist/*.whl
+    install -Dm644 ${pkgname}/${pkgname}.conf ${pkgdir}/usr/share/doc/${pkgname}/${pkgname}.conf
+    install -Dm644 man/${pkgname}.1 ${pkgdir}/usr/share/man/man1/${pkgname}.1
 }

README.md

@@ -1,10 +1,71 @@
-# simple-backup
+simple_backup
+============
 A simple backup script
 
 ## Description
-simple-backup is a Python script that allows you to backup your files.
-It reads from a configuration file the files/directories that must be copied,
-the destination directory for the backup and a few other options.
+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
-rsync is used to perform the backup.  
+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
+
+## Remote backup
+> **Warning**
+> This feature is experimental
+
+It's possible to use a remote server as destination for the backup. Just use the --username (or -u) and --host arguments (or set them in the configuration file).
+For this to work, rsync must be installed on the server too.
+
+### Server authentication
+The best way to handle the authentication is to have an ssh agent running on your system, otherwise if a passphrase is necessary to unlock the ssh key, it will be necessary to enter it more than once.
+If needed, it's possible to specify the ssh key location with the --keyfile argument or in the configuration file.
+
+To be able to connect to the user's ssh agent when running simple_backup with sudo, make sure to preserve the SSH_AUTH_SOCK environment variable. For example:
+
+```bash
+sudo --preserve-env=SSH_AUTH_SOCK -s simple_backup [options]
+```
+
+or by editing the sudoers file.
+If SSH key authentication is not available, password authentication will be used instead.
+Check the man page for more details.

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 (use -1 to keep all)
-keep=-1

man/simple_backup.1

@@ -0,0 +1,192 @@
+.TH SIMPLE_BACKUP 1 2025-03-30 SIMPLE_BACKUP 4.1.6
+.SH NAME
+simple_backup \- Backup files and folders using rsync
+.SH SYNOPSIS
+.B simple_backup
+\-h, \-\-help
+.PD 0
+.P
+.PD
+.B 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]
+[\-\-ssh\-host HOSTNAME]
+[\-\-ssh\-user USERNAME]
+[\-\-keyfile FILE]
+.PD 0
+.P
+.PD
+[\-s, \-\-checksum]
+[\-z, \-\-compress]
+[\-\-remove\-before\-backup]
+.RE
+.SH DESCRIPTION
+.B simple_backup
+is a python script for performing backup of files and folders.
+.P
+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.
+.P
+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 \-u, \-\-user USERNAME
+Explicitly specify the user running the backup (in case it is needed for home directory expansion).
+.TP
+.B \-\-ssh\-host HOSTNAME
+Hostname of the server where to copy the files in case of remote backup through SSH.
+.TP
+.B \-\-ssh\-user USERNAME
+Username for connecting to the server in case of remote backup.
+.TP
+.B \-\-keyfile FILE
+Location of the SSH key for server authentication. 
+.TP
+.B \-s, \-\-checksums
+Same as rsync option \(aq\-\-checksum\(aq, use checksums instead of mod\-time and size
+to skip files.
+.TP
+.B \-z, \-\-compress
+Compress data during transfer (rsync \(aq\-\-compress\(aq option). Useful for remote backup
+if saving bandwith is needed.
+.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.
+.TP
+.B \-\-rsync\-options OPTIONS [OPTION...]
+By default, the following rsync options are used:
+.RS
+.P
+    \-a \-r \-v \-h \-s \-H \-X
+.P
+Using \-\-rsync\-options it is possible to manually select which options to use. Supported values are the following:
+.P
+    \-a, \-l, \-p, \-t, \-g, \-o, \-c, \-h, \-D, \-H, \-X, \-s
+.P
+Options \-r and \-v are used in any case. Not that options must be specified without dash (\-), for example:
+.P
+.EX
+    simple_backup \-\-rsync\-options a l p
+.EE
+.P
+Check
+.BR rsync (1)
+for details about the options.
+.RE
+.TP
+.B \-\-remote\-sudo
+Run rsync on the remote server with sudo. This is needed if you want to preserve the owner of the files/folders to be copied (rsync \-\-owner option). For this to work the user used to login to the server obviously need to be allowed to use sudo. In addition, the user need to be able to run rsync with sudo without a password. To do this, /etc/sudoers on the server need to be edited adding a line like this one:
+.RS
+.P
+    <username> ALL=NOPASSWD:<path/to/rsync>
+.P
+To be able to remove old backups generated with \-\-remote\-sudo (see \-\-keep option), also
+.BR rm (1)
+needs to be allowed to run without password in the same way.
+.RE
+.TP
+.B \-\-numeric\-ids
+Use rsync \-\-numeric\-ids option. This causes rsync to use numeric uid/gid instead of trying to map uid/gid names from the local machine to the server.
+.SH CONFIGURATION
+An example configuration file is provided at \(aq/usr/share/doc/simple_backup/simple_backup.conf\(aq.
+Copy it to the default location ($HOME/.config/simple_backup) and edit it as needed.
+.SH REMOTE BACKUP
+It is possible to choose a directory on a remote server as destination for the backup. The files
+are copied by rsync through SSH. Server hostname and username must be specified, either in the
+configuration file, or on the command line (\(aq\-\-ssh\-host\(aq and \(aq\-\-ssh\-user\(aq options).
+.SS AUTHENTICATION
+For authentication, it is possible to use SSH key or password.
+.P
+When using SSH key, the best way to connect to the server is to have an SSH agent running.
+Otherwise, if the SSH key is encrypted, it will be necessary to enter the passphrase more
+than once. It is possible to specify the SSH key to use with the option \(aq\-\-keyfile\(aq,
+if necessary.
+.P
+When running
+.B simple_backup
+with
+.B sudo,
+in order to connect to the user\(aqs SSH agent it is necessary to preserve the \(aqSSH_AUTH_SOCK\(aq environment variable, for example:
+.P
+.EX
+    sudo --preserve-env=SSH_AUTH_SOCK -s simple_backup [options]
+.EE
+.P
+It is also possible to make this permanent by editing the
+.B sudoers
+file (see
+.BR sudoers (5))
+.P
+If SSH key authentication is not available, password authentication will be used instead.
+Note that in this case
+.B sshpass
+(if available) will be used to send the password to rsync, to avoid prompting the user for
+the password multiple
+times. This can pose some security risks, see
+.BR sshpass (1)
+for details. For this reason, use SSH key authentication if possible.
+.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).
+.TP
+.B 5
+SSH connection failed.
+.TP
+.B 6
+Bad configuration file.
+.SH SEE ALSO
+.BR rsync (1)
+.SH AUTHORS
+.MT https://git.shouldnt.work/fuxino
+Daniele Fucini
+.ME

pyproject.toml

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

setup.cfg

@@ -0,0 +1,39 @@
+[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://git.shouldnt.work/fuxino
+classifiers =
+   Development Status :: 4 - Beta
+   Environment :: Console
+   License :: OSI Approved :: GNU General Public License v3 (GPLv3)
+   Natural Language :: English
+   Operating System :: POSIX :: Linux
+   Programming Language :: Python :: 3.10
+   Programming Language :: Python :: 3.11
+   Programming Language :: Python :: 3.12
+   Programming Language :: Python :: 3.13
+   Topic :: System :: Archiving :: Backup
+
+[options]
+packages = simple_backup
+python_requires = >=3.10
+install_requires =
+   python-dotenv
+
+[options.extras_require]
+JOURNAL =
+    systemd-python
+NOTIFICATIONS =
+    dbus-python
+REMOTE =
+    paramiko
+
+[options.entry_points]
+console_scripts =
+   simple_backup = simple_backup.simple_backup:simple_backup
+

simple-backup.py

@@ -1,587 +0,0 @@
-#!/usr/bin/python3
-
-# Import libraries
-from sys import exit, argv
-
-import os
-from os.path import expanduser, isfile, isdir, islink, exists
-from shutil import move, rmtree
-
-import subprocess
-
-from datetime import datetime
-from tempfile import mkstemp
-
-class Backup():
-
-    def __init__(self, *args, **kwargs):
-        super(Backup, self).__init__(*args, **kwargs)
-        
-        self.log_path = ''
-        self.logfile = None
-        self.err_path = ''
-        self.errfile = None
-        self.warn_path = ''
-        self.warnfile = None
-        self.homedir = ''
-        self.backup_dev = ''
-        self.backup_dir = ''
-        self.last_backup = ''
-        self.inputs = ''
-        self.inputs_path = ''
-        self.exclude_path = ''
-        self.exclude = ''
-        self.options = ''
-        self.user = ''
-        self.keep = -1
-        self.n_in = 0
-
-    # Help function
-    def help_function(self):
-        print('simple_backup, version 1.4.2')
-        print('')
-        print('Usage: {} [OPTIONS]'.format(argv[0]))
-        print('')
-        print('Options:')
-        print('-h, --help                             Print this help and exit.')
-        print('-c, --config      CONFIG_FILE          Use the specified configuration file')
-        print('                                       instead of the default one.')
-        print('                                       All other options are ignored.')
-        print('-i, --input       INPUT [INPUT...]     Specify a file/dir to include in the backup.')
-        print('-d, --directory   DIR                  Specify the output directory for the backup.')
-        print('-e, --exclude     PATTERN [PATTERN...] Specify a file/dir/pattern to exclude from')
-        print('                                       the backup.')
-        print('-k, --keep        NUMBER               Specify the number of old backups to keep.')
-        print('                                       Default: keep all.')
-        print('-u, --user        USER                 User performing the backup.')
-        print('                                       Default: current user.')
-        print('-s, --checksum                         Use the checksum rsync option to compare files')
-        print('                                       (MUCH slower).')
-        print('')
-        print('If no option is given, the program uses the default')
-        print('configuration file: $HOMEDIR/.simple_backup/config.')
-        print('')
-        print('Report bugs to dfucini@gmail.com')
-
-        exit(0)
-
-    # Function to read configuration file
-    def read_conf(self, config=None):
-        if config is None:
-            config = self.homedir + '/.simple_backup/config'
-
-            if not isfile(config):
-            # If default config file doesn't exist, exit
-                log_message = str(datetime.now()) + ': Backup failed (see errors.log)'
-                self.logfile.write(log_message)
-                self.logfile.write('\n')
-                print('Backup failed')
-                err_message = 'Error: Configuration file not found'
-                print(err_message)
-                self.errfile.write(err_message)
-                self.errfile.write('\n')
-
-                # Fix ownership and permissions of log files if needed
-                if self.user != None:
-                    pass
-#                   chown $USER:$USER $LOG && chmod 644 $LOG
-#                   chown $USER:$USER $ERR && chmod 644 $ERR
-#                   chown $USER:$USER $WARN && chmod 644 $WARN
-                
-                self.logfile.close()
-                self.errfile.close()
-                self.warnfile.close()
-            
-                move(self.log_path, self.homedir + '/.simple_backup/simple_backup.log')
-                move(self.err_path, self.homedir + '/.simple_backup/errors.log')
-                move(self.warn_path, self.homedir + '/.simple_backup/warnings.log')
-
-                exit(1)
-        else:
-            if not isfile(config):
-                # If the provided configuration file doesn't exist, exit
-                log_message = str(datetime.now()) + ': Backup failed (see errors.log)'
-                self.logfile.write(log_message)
-                self.logfile.write('\n')
-                print('Backup failed')
-                err_message = 'Error: Configuration file not found'
-                print(err_message)
-                self.errfile.write(err_message)
-                self.errfile.write('\n')
-
-                # Fix ownership and permissions of log files if needed
-                if self.user != None: 
-                    pass
-#                   chown $USER:$USER $LOG && chmod 644 $LOG
-#                   chown $USER:$USER $ERR && chmod 644 $ERR
-#                   chown $USER:$USER $WARN && chmod 644 $WARN
-         
-                self.logfile.close()
-                self.errfile.close()
-                self.warnfile.close()
-                
-                move(self.log_path, self.homedir + '/.simple_backup/simple_backup.log')
-                move(self.err_path, self.homedir + '/.simple_backup/errors.log')
-                move(self.warn_path, self.homedir + '/.simple_backup/warnings.log')
-
-                exit(1)
-
-        # Create temporary files
-        inputs_handle, self.inputs_path = mkstemp(prefix='tmp_inputs', text=True)
-        exclude_handle, self.exclude_path = mkstemp(prefix='tmp_exclude', text=True)
-
-        # Open temporary files
-        self.inputs = open(self.inputs_path, 'w')
-        self.exclude = open(self.exclude_path, 'w')
-
-        # Parse the configuration file
-        with open(config, 'r') as fp:
-            line = fp.readline()
-
-            while line:
-                if line[:7] == 'inputs=':
-                    line = line[7:].rstrip()
-                    input_values = line.split(',')
-                    n_in = 0
-                    for i in input_values:
-                        if not exists(i):
-                            warn_message = 'Warning: input "' + i + '" not found. Skipping'
-                            print(warn_message)
-                            self.warnfile.write(warn_message)
-                            self.warnfile.write('\n')
-                        else:
-                            self.inputs.write(i)
-                            self.inputs.write('\n')
-                            self.n_in = self.n_in + 1
-                elif line[:11] == 'backup_dir=':
-                    line = line[11:].rstrip()
-                    self.backup_dev = line
-                elif line[:8] == 'exclude=':
-                    line = line[8:].rstrip()
-                    exclude_values = line.split(',')
-                    for i in exclude_values:
-                        self.exclude.write(i)
-                        self.exclude.write('\n')
-                elif line[:5] == 'keep=':
-                    line = line[5:].rstrip()
-                    self.keep = int(line)
-
-                line = fp.readline()
-
-            fp.close()
-            self.inputs.close()
-            self.exclude.close()
-
-        # If the backup directory is not set or doesn't exist, exit
-        if self.backup_dev == '' or not isdir(self.backup_dev):
-            log_message = str(datetime.now()) + ': Backup failed (see errors.log)'
-            self.logfile.write(log_message)
-            self.logfile.write('\n')
-            print('Backup failed')
-            err_message = 'Error: Output folder "' + self.backup_dev + '" not found'
-            print(err_message)
-            self.errfile.write(err_message)
-            self.errfile.write('\n')
-
-            # Fix ownership and permissions of log files if needed
-            if self.user != None:
-                pass
-#               chown $USER:$USER $LOG && chmod 644 $LOG
-#               chown $USER:$USER $ERR && chmod 644 $ERR
-#               chown $USER:$USER $WARN && chmod 644 $WARN
-                
-            self.logfile.close()
-            self.errfile.close()
-            self.warnfile.close()
-        
-            move(self.log_path, self.homedir + '/.simple_backup/simple_backup.log')
-            move(self.err_path, self.homedir + '/.simple_backup/errors.log')
-            move(self.warn_path, self.homedir + '/.simple_backup/warnings.log')
-
-            exit(1)
-
-        self.backup_dir = self.backup_dev + '/simple_backup'
-        date = str(datetime.now())
-
-        # Create the backup subdirectory using date
-        if isdir(self.backup_dir):
-            # If previous backups exist, save link to the last backup
-            self.last_backup = self.backup_dir + '/last_backup'
-            if islink(self.last_backup):
-                self.last_backup = os.readlink(self.last_backup)
-            else:
-                self.last_backup = ''
-        
-        self.backup_dir = self.backup_dir + '/' + date
-        os.makedirs(self.backup_dir)
-
-        return
-
-    # Function to parse options
-    def parse_options(self):
-        # Create temporary files
-        inputs_handle, self.inputs_path = mkstemp(prefix='tmp_inputs', text=True)
-        exclude_handle, self.exclude_path = mkstemp(prefix='tmp_exclude', text=True)
-
-        # Open temporary files
-        self.inputs = open(self.inputs_path, 'w')
-        self.exclude = open(self.exclude_path, 'w')
-
-        i = 1
-        while i < len(argv):
-            var = argv[i]
-
-            if var == '-h' or var == '--help':
-                self.help_function()
-            elif var == '-i' or var == '--input':
-                val = argv[i+1]
-                while i < len(argv) - 1 and val[0] != '-':
-                    inp = val
-
-                    if not exists(inp):
-                        warn_message = 'Warning: input "' + inp + '" not found. Skipping'
-                        print(warn_message)
-                        self.warnfile.write(warn_message)
-                        self.warnfile.write('\n')
-                    else:
-                        self.n_in = self.n_in + 1
-                        self.inputs.write(inp)
-                        self.inputs.write('\n')
-
-                    i = i + 1
-                    val = argv[i+1]
-            elif var == '-d' or var == '--directory':
-                self.backup_dev = argv[i+1]
-
-                if not exists(self.backup_dev) or not isdir(self.backup_dev):
-                    log_message = str(datetime.now()) + ': Backup failed (see errors.log)'
-                    self.logfile.write(log_message)
-                    self.logfile.write('\n')
-                    print('Backup failed')
-                    err_message = 'Error: output folder "' + self.backup_dev + '" not found'
-                    print(err_message)
-                    self.errfile.write(err_message)
-                    self.errfile.write('\n')
-
-                    if self.user is not None:
-                        pass
-#                       chown $USER:$USER $LOG && chmod 644 $LOG
-#                       chown $USER:$USER $ERR && chmod 644 $ERR
-#                       chown $USER:$USER $WARN && chmod 644 $WARN
-
-                    self.logfile.close()
-                    self.errfile.close()
-                    self.warnfile.close()
-                    
-                    move(self.log_path, self.homedir + '/.simple_backup/simple_backup.log')
-                    move(self.err_path, self.homedir + '/.simple_backup/errors.log')
-                    move(self.warn_path, self.homedir + '/.simple_backup/warnings.log')
-
-                    exit(1)
-
-                self.backup_dir = self.backup_dev + '/simple_backup'
-                date = str(datetime.now())
-    
-                # Create the backup subdirectory using date
-                if isdir(self.backup_dir):
-                    #If previous backups exist, save link to the last backup
-                    self.last_backup = self.backup_dir + '/last_backup'
-                    if islink(self.last_backup):
-                        self.last_backup = os.readlink(self.last_backup)
-                    else:
-                        self.last_backup = ''
-        
-                self.backup_dir = self.backup_dir + '/' + date
-                os.makedirs(self.backup_dir)
-
-                i = i + 1
-            elif var == '-e' or var == '--exclude':
-                val = argv[i+1]
-                while i < len(argv) - 1 and val[0] != '-':
-                    exc = val
-                    self.exclude.write(exc)
-                    self.exclude.write('\n')
-
-                    i = i + 1
-                    val = argv[i+1]
-            elif var == '-k' or var == '--keep':
-                self.keep = int(argv[i+1])
-
-                i = i + 1
-            elif var == '-c' or var == '--config':
-                self.read_conf(argv[i+1])
-
-                i = i + 1
-            elif var == '-u' or var == '--user':
-                self.homedir = '/home/' + argv[i+1]
-                if not isdir(self.homedir):
-                    log_message = str(datetime.now()) + ': Backup failed (see errors.log)'
-                    self.logfile.write(log_message)
-                    self.logfile.write('\n')
-                    print('Backup failed')
-                    err_message = 'Error: user "' + argv[i+1] + '"doesn\'t exist'
-                    self.errfile.write(err_message)
-                    self.errfile.write('\n')
-
-                    if self.user is not None:
-                        pass
-#                       chown $USER:$USER $LOG && chmod 644 $LOG
-#                       chown $USER:$USER $ERR && chmod 644 $ERR
-#                       chown $USER:$USER $WARN && chmod 644 $WARN
-            
-                    self.logfile.close()
-                    self.errfile.close()
-                    self.warnfile.close()
-                    
-                    move(self.log_path, self.homedir + '/.simple_backup/simple_backup.log')
-                    move(self.err_path, self.homedir + '/.simple_backup/errors.log')
-                    move(self.warn_path, self.homedir + '/.simple_backup/warnings.log')
-
-                    exit(1)
-
-                if not isdir(self.homedir + '/.simple_backup'):
-                    os.makedir(self.homedir + '/.simple_backup')
-                    print('Create directory "' + self.homedir + '/.simple_backup".')
-
-                self.user = argv[i+1]
-
-                i = i + 1
-            elif var == '-s' or var == '--checksum':
-                self.options = '-arcvh -H -X'
-            else:
-                log_message = str(datetime.now()) + ': Backup failed (see errors.log)'
-                self.logfile.write(log_message)
-                self.logfile.write('\n')
-                print('Backup failed')
-                err_message = 'Error: Option "' + var + '" not recognised. Use "simple-backup -h" to see available options'
-                self.errfile.write(err_message)
-                self.errfile.write('\n')
-
-                # Fix ownership and permissions of log files if needed
-                if self.user is not None:
-                    pass
-#                   chown $USER:$USER $LOG && chmod 644 $LOG
-#                   chown $USER:$USER $ERR && chmod 644 $ERR
-#                   chown $USER:$USER $WARN && chmod 644 $WARN
-            
-                self.logfile.close()
-                self.errfile.close()
-                self.warnfile.close()
-                
-                move(self.log_path, self.homedir + '/.simple_backup/simple_backup.log')
-                move(self.err_path, self.homedir + '/.simple_backup/errors.log')
-                move(self.warn_path, self.homedir + '/.simple_backup/warnings.log')
-
-                exit(1)
-
-            i = i + 1
-
-        self.inputs.close()
-        self.exclude.close()
-
-        return
-
-    def exec_(self):
-        print('Copying files. This may take a long time...')
-
-        if self.last_backup == '':
-            rsync = 'rsync ' + self.options + ' --exclude-from=' + self.exclude_path +\
-                    ' --files-from=' + self.inputs_path + ' / "' + self.backup_dir +\
-                    '" --ignore-missing-args >> ' + self.log_path + ' 2>> ' + self.err_path
-        else:
-            rsync = 'rsync ' + self.options + ' --link-dest="' + self.last_backup + '" --exclude-from=' +\
-                    self.exclude_path + ' --files-from=' + self.inputs_path + ' / "' + self.backup_dir +\
-                    '" --ignore-missing-args >> ' + self.log_path + ' 2>> ' + self.err_path
-
-        subprocess.run(rsync, shell=True)
-        
-        return
-
-def main():
-
-    backup = Backup()
-
-    # Create temporary log files
-    log_handle, backup.log_path = mkstemp(prefix='tmp_log', text=True)
-    err_handle, backup.err_path = mkstemp(prefix='tmp_err', text=True)
-    warn_handle, backup.warn_path = mkstemp(prefix='tmp_warn', text=True)
-
-    # Open log files
-    backup.logfile = open(backup.log_path, 'w')
-    backup.errfile = open(backup.err_path, 'w')
-    backup.warnfile = open(backup.warn_path, 'w')
-
-    # Set homedir and default options
-    backup.homedir = expanduser('~')
-    backup.options = '-arvh -H -X'
-
-    # Check number of parameters
-    if len(argv) == 1:
-        # If simple backup directory doesn't exist, create it and exit
-        if not isdir(backup.homedir + '/.simple_backup'):
-            os.makedir(backup.homedir + '/.simple_backup')
-            print('Created directory "' + backup.homedir + '/.simple_backup".')
-            print('Copy there the sample configuration and edit it')
-            print('to your needs before running the backup,')
-            print('or pass options on the command line.')
-
-            exit(1)
-
-        # Read configuration file
-        backup.read_conf()
-    else:
-        backup.parse_options()
-
-    if backup.n_in > 0 and (backup.backup_dir == '' or 
-            not isdir(backup.backup_dir)):
-        #If the backup directory is not set or doesn't exist, exit
-        log_message = str(datetime.now()) + ': Backup failed (see errors.log)'
-        backup.logfile.write(log_message)
-        backup.logfile.write('\n')
-        err_message = 'Error: Output folder "' + backup.backup_dev.getBackupDev + '" not found'
-        backup.errfile.write(err_message)
-        backup.errfile.write('\n')
-
-        #Fix ownership and permissions of log files if needed
-        if backup.user is not None:
-            pass
-#            chown $USER:$USER $LOG && chmod 644 $LOG
-#            chown $USER:$USER $ERR && chmod 644 $ERR
-#            chown $USER:$USER $WARN && chmod 644 $WARN
-
-        backup.logfile.close()
-        backup.errfile.close()
-        backup.warnfile.close()
-        
-        move(backup.log_path, backup.homedir + '/.simple_backup/simple_backup.log')
-        move(backup.err_path, backup.homedir + '/.simple_backup/errors.log')
-        move(backup.warn_path, backup.homedir + '/.simple_backup/warnings.log')
-
-        exit(1)
-    elif backup.n_in == 0 and backup.backup_dir == '':
-        if not isdir(backup.homedir + '/.simple_backup'):
-            os.makedir(backup.homedir + '/.simple_backup')
-            print('Created directory "' + backup.homedir + '/.simple_backup".')
-            print('Copy there the sample configuration and edit it')
-            print('to your needs before running the backup')
-            print('or pass options on the command line.')
-
-            exit(1)
-
-        backup.read_conf(backup.homedir + '/.simple_backup/config')
-
-    if backup.n_in == 0:
-        log_message = str(datetime.now()) + ': Backup finished (no files copied)'
-        backup.logfile.write(log_message)
-        backup.logfile.write('\n')
-        print('Backup finished (no files copied')
-        warn_message = 'Warning: no valid input selected. Nothing to do'
-        backup.warnfile.write(warn_message)
-        backup.warnfile.write('\n')
-        print(warn_message)
-               
-        #Fix ownership and permissions of log files if needed
-        if backup.user is None:
-            pass
-#            chown $USER:$USER $LOG && chmod 644 $LOG
-#            chown $USER:$USER $ERR && chmod 644 $ERR
-#            chown $USER:$USER $WARN && chmod 644 $WARN
-        
-        backup.logfile.close()
-        backup.errfile.close()
-        backup.warnfile.close()
-        
-        move(backup.log_path, backup.homedir + '/.simple_backup/simple_backup.log')
-        move(backup.err_path, backup.homedir + '/.simple_backup/errors.log')
-        move(backup.warn_path, backup.homedir + '/.simple_backup/warnings.log')
-
-        exit(0)
-
-    log_message = str(datetime.now()) + ': Starting backup'
-    backup.logfile.write(log_message)
-    backup.logfile.write('\n')
-    print('Starting backup...')
-
-    #If specified, keep the last n backups and remove the others. Default: keep all
-    if backup.keep > -1:
-        dirs = os.listdir(backup.backup_dev + '/simple_backup')
-        if dirs.count('last_backup') > 0:
-            dirs.remove('last_backup')
-        n_backup = len(dirs) - 1
-
-        if n_backup > backup.keep:
-            log_message = str(datetime.now()) + ': Removing old backups'
-            backup.logfile.write(log_message)
-            backup.logfile.write('\n')
-            print('Removing old backups...')
-            dirs.sort()
-
-            err_flag = 0
-
-            for i in range(n_backup-backup.keep):
-                try:
-                    rmtree(backup.backup_dev + '/simple_backup/' + dirs[i])
-                    log_message = 'Removed backup: ' + dirs[i]
-                    backup.logfile.write(log_message)
-                    backup.logfile.write('\n')
-                except:
-                    err_message = 'Error while removing backup ' + dirs[i]
-                    backup.errfile.write(err_message)
-                    backup.errfile.write('\n')
-                    err_flag = 1
-
-            if err_flag:
-                print(err_message)
-
-    backup.logfile.close()
-    backup.errfile.close()
-    backup.warnfile.close()
-
-    backup.exec_()
-
-    # Update the logs
-    backup.logfile = open(backup.log_path, 'a')
-
-    if os.stat(backup.err_path).st_size > 0:
-        log_message = str(datetime.now()) + ': Backup finished with errors'
-        backup.logfile.write(log_message)
-        backup.logfile.write('\n')
-        print('Backup finished with errors')
-    elif os.stat(backup.warn_path).st_size > 0:
-        log_message = str(datetime.now()) + ': Backup finished with warnings'
-        backup.logfile.write(log_message)
-        backup.logfile.write('\n')
-        print('Backup finished (warnings)')
-    else: 
-        log_message = str(datetime.now()) + ': Backup finished'
-        backup.logfile.write(log_message)
-        backup.logfile.write('\n')
-        print('Backup finished')
-
-    # Fix ownership and permissions of log files if needed
-    if backup.user is not None:
-        pass
-#        chown $USER:$USER $LOG && chmod 644 $LOG
-#        chown $USER:$USER $ERR && chmod 644 $ERR
-#        chown $USER:$USER $WARN && chmod 644 $WARN
-    
-    backup.logfile.close()
-
-    # Copy log files in home directory
-    move(backup.log_path, backup.homedir + '/.simple_backup/simple_backup.log')
-    move(backup.err_path, backup.homedir + '/.simple_backup/errors.log')
-    move(backup.warn_path, backup.homedir + '/.simple_backup/warnings.log')
-
-    if islink(backup.backup_dev + '/simple_backup/last_backup'):
-        os.remove(backup.backup_dev + '/simple_backup/last_backup')
-
-    os.symlink(backup.backup_dir, backup.backup_dev + '/simple_backup/last_backup')
-
-    # Delete temporary files
-    os.remove(backup.inputs_path)
-    os.remove(backup.exclude_path)
-
-    exit(0)
-
-if __name__ == '__main__':
-    main()

simple_backup/__init__.py

@@ -0,0 +1,3 @@
+"""Init."""
+
+__version__ = '4.1.6'

simple_backup/simple_backup.conf

@@ -0,0 +1,22 @@
+# Example config file for simple_backup
+
+[backup]
+# 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/user
+
+# 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
+
+# Uncomment the following section to enable backup to remote server through ssh
+# [server]
+# ssh_host=
+# ssh_user=
+# ssh_keyfile=
+# remote_sudo=
+# numeric_ids=

simple_backup/simple_backup.py

@@ -0,0 +1,919 @@
+#!/usr/bin/env python3
+
+"""
+A simple python script that calls rsync to perform a backup
+
+Parameters can be specified on the command line or using a configuration file
+Backup to a remote server is also supported (experimental)
+
+Classes:
+    MyFormatter
+    Backup
+"""
+
+# Import libraries
+import sys
+import os
+from typing import Callable, List, Optional, ParamSpec, TypeVar, Union
+import warnings
+from functools import wraps
+from shutil import rmtree, which
+import shlex
+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 getpass import GetPassWarning, getpass
+from glob import glob
+
+from dotenv import load_dotenv
+
+warnings.filterwarnings('error')
+
+try:
+    import paramiko
+    from paramiko import RSAKey, Ed25519Key, ECDSAKey, DSSKey
+except ImportError:
+    pass
+
+try:
+    from systemd import journal
+except ImportError:
+    journal = None
+
+try:
+    import dbus
+except ImportError:
+    pass
+
+
+load_dotenv()
+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)
+
+P = ParamSpec('P')
+R = TypeVar('R')
+
+
+def timing(func: Callable[P, R]) -> Callable[P, R]:
+    """Decorator to measure execution time of a function
+
+        Parameters:
+            func: Function to decorate
+    """
+    @wraps(func)
+    def wrapper(*args: P.args, **kwargs: P.kwargs) -> R:
+        start = default_timer()
+
+        value = func(*args, **kwargs)
+
+        end = default_timer()
+
+        logger.info('Elapsed time: %.3f seconds', end - start)
+
+        return value
+
+    return wrapper
+
+
+class MyFormatter(argparse.RawTextHelpFormatter, argparse.ArgumentDefaultsHelpFormatter):
+    """Custom format for argparse help text"""
+
+
+class Backup:
+    """Main class defining parameters and functions for performing backup
+
+    Attributes:
+        inputs: list
+            Files and folders that will be backup up
+        output: str
+            Path where the backup will be saved
+        exclude: list
+            List of files/folders/patterns to exclude from backup
+        options: str
+            String representing main backup options for rsync
+        keep: int
+            Number of old backup to preserve
+        ssh_host: str
+            Hostname of server (for remote backup)
+        ssh_user: str
+            Username for server login (for remote backup)
+        ssh_keyfile: str
+            Location of ssh key
+        remote_sudo: bool
+            Run remote rsync with sudo
+        remove_before: bool
+            Indicate if removing old backups will be performed before copying files
+
+    Methods:
+        check_params():
+            Check if parameters for the backup are valid
+        define_backup_dir():
+            Define the actual backup dir
+        remove_old_backups():
+            Remove old backups if there are more than indicated by 'keep'
+        find_last_backup():
+            Get path of last backup (from last_backup symlink) for rsync --link-dest
+        run():
+            Perform the backup
+    """
+
+    def __init__(self, inputs: List[str], output: str, exclude: List[str], keep: int, options: str,
+                 ssh_host: Optional[str] = None, ssh_user: Optional[str] = None, ssh_keyfile: Optional[str] = None,
+                 remote_sudo: bool = False, remove_before: bool = False, verbose: bool = False) -> None:
+        self.inputs = inputs
+        self.output = output
+        self.exclude = exclude
+        self.options = options
+        self.keep = keep
+        self.ssh_host = ssh_host
+        self.ssh_user = ssh_user
+        self.ssh_keyfile = ssh_keyfile
+        self.remote_sudo = remote_sudo
+        self._remove_before = remove_before
+        self._verbose = verbose
+        self._last_backup = ''
+        self._server = ''
+        self._output_dir = ''
+        self._inputs_path = ''
+        self._exclude_path = ''
+        self._remote = False
+        self._ssh = None
+        self._password_auth = False
+        self._password = None
+
+    def check_params(self, homedir: str = '') -> int:
+        """Check if parameters for the backup are valid"""
+
+        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 self.ssh_host is not None and self.ssh_user is not None:
+            self._remote = True
+
+        if self._remote:
+            self._ssh = self._ssh_connect(homedir)
+
+            if self._ssh is None:
+                return 5
+
+            _, stdout, _ = self._ssh.exec_command(
+                f'if [ -d "{self.output}" ]; then echo "ok"; fi')
+
+            output = stdout.read().decode('utf-8').strip()
+
+            if output != 'ok':
+                logger.critical('Output path for backup does not exist')
+
+                return 2
+        else:
+            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 define_backup_dir(self) -> None:
+        """Define the actual backup dir"""
+        now = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
+        self._output_dir = f'{self.output}/simple_backup/{now}'
+
+        if self._remote:
+            self._server = f'{self.ssh_user}@{self.ssh_host}:'
+
+    def remove_old_backups(self) -> None:
+        """Remove old backups if there are more than indicated by 'keep'"""
+
+        if self._remote:
+            assert self._ssh is not None
+
+            _, stdout, _ = self._ssh.exec_command(
+                f'ls {self.output}/simple_backup')
+
+            dirs = stdout.read().decode('utf-8').strip().split('\n')
+
+            n_backup = len(dirs)
+
+            if not self._remove_before:
+                n_backup -= 1
+
+            count = 0
+
+            if n_backup > self.keep:
+                logger.info('Removing old backups...')
+                dirs.sort()
+
+                for i in range(n_backup - self.keep):
+                    if self.remote_sudo:
+                        _, _, stderr = self._ssh.exec_command(
+                            f'sudo rm -r "{self.output}/simple_backup/{dirs[i]}"')
+                    else:
+                        _, _, stderr = self._ssh.exec_command(
+                            f'rm -r "{self.output}/simple_backup/{dirs[i]}"')
+
+                    err = stderr.read().decode('utf-8').strip().split('\n')[0]
+
+                    if err != '':
+                        logger.error(
+                            'Error while removing backup %s.', {dirs[i]})
+                        logger.error(err)
+                    else:
+                        count += 1
+        else:
+            try:
+                dirs = os.listdir(f'{self.output}/simple_backup')
+            except FileNotFoundError:
+                return
+
+            n_backup = len(dirs)
+
+            if not self._remove_before:
+                n_backup -= 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(
+                            'Error while removing backup %s. Directory not found', dirs[i])
+                    except PermissionError:
+                        logger.error(
+                            'Error while removing backup %s. Permission denied', dirs[i])
+
+        if count == 1:
+            logger.info('Removed %d backup', count)
+        elif count > 1:
+            logger.info('Removed %d backups', count)
+
+    def find_last_backup(self) -> None:
+        """Get path of last backup (from last_backup symlink) for rsync --link-dest"""
+
+        if self._remote:
+            if self._ssh is None:
+                logger.critical('SSH connection to server failed')
+                sys.exit(5)
+
+            _, stdout, _ = self._ssh.exec_command(
+                f'find {self.output}/simple_backup/ -mindepth 1 -maxdepth 1 -type d | sort')
+            output = stdout.read().decode('utf-8').strip().split('\n')
+
+            if output[-1] != '':
+                self._last_backup = output[-1]
+            else:
+                logger.info('No previous backups available')
+        else:
+            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')
+
+    def _ssh_connect(self, homedir: str = '') -> paramiko.client.SSHClient:
+        try:
+            ssh = paramiko.SSHClient()
+        except NameError:
+            logger.error('Install paramiko for ssh support')
+
+            return None
+
+        try:
+            ssh.load_host_keys(filename=f'{homedir}/.ssh/known_hosts')
+        except FileNotFoundError:
+            logger.warning('Cannot find file %s/.ssh/known_hosts', homedir)
+
+        ssh.set_missing_host_key_policy(paramiko.WarningPolicy())
+
+        try:
+            ssh.connect(self.ssh_host, username=self.ssh_user)
+
+            return ssh
+        except UserWarning:
+            k = input(
+                f'Unknown key for host {self.ssh_host}. Continue anyway? (Y/N) ')
+
+            if k[0].upper() == 'Y':
+                ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
+            else:
+                return None
+        except paramiko.BadHostKeyException as e:
+            logger.critical('Can\'t connect to the server.')
+            logger.critical(e)
+
+            return None
+        except paramiko.SSHException:
+            pass
+
+        try:
+            ssh.connect(self.ssh_host, username=self.ssh_user)
+
+            return ssh
+        except paramiko.SSHException:
+            pass
+
+        if self.ssh_keyfile is None:
+            try:
+                password = getpass(
+                    f'{self.ssh_user}@{self.ssh_host}\'s password: ')
+                ssh.connect(self.ssh_host, username=self.ssh_user,
+                            password=password)
+
+                self._password_auth = True
+                os.environ['SSHPASS'] = password
+
+                return ssh
+            except GetPassWarning as e:
+                logger.critical('Unable to get password')
+                logger.critical(e)
+
+                return None
+            except paramiko.SSHException as e:
+                logger.critical('Can\'t connect to the server.')
+                logger.critical(e)
+
+                return None
+
+        pkey = None
+
+        try:
+            pkey = RSAKey.from_private_key_file(self.ssh_keyfile)
+        except paramiko.PasswordRequiredException:
+            password = getpass(
+                f'Enter passwphrase for key \'{self.ssh_keyfile}\': ')
+
+            try:
+                pkey = RSAKey.from_private_key_file(self.ssh_keyfile, password)
+            except paramiko.SSHException:
+                pass
+
+        if pkey is None:
+            try:
+                pkey = Ed25519Key.from_private_key_file(self.ssh_keyfile)
+            except paramiko.PasswordRequiredException:
+                try:
+                    pkey = Ed25519Key.from_private_key_file(
+                        self.ssh_keyfile, password)
+                except paramiko.SSHException:
+                    pass
+
+        if pkey is None:
+            try:
+                pkey = ECDSAKey.from_private_key_file(self.ssh_keyfile)
+            except paramiko.PasswordRequiredException:
+                try:
+                    pkey = ECDSAKey.from_private_key_file(
+                        self.ssh_keyfile, password)
+                except paramiko.SSHException:
+                    pass
+
+        if pkey is None:
+            try:
+                pkey = DSSKey.from_private_key_file(self.ssh_keyfile)
+            except paramiko.PasswordRequiredException:
+                try:
+                    pkey = DSSKey.from_private_key_file(
+                        self.ssh_keyfile, password)
+                except paramiko.SSHException:
+                    pass
+
+        try:
+            ssh.connect(self.ssh_host, username=self.ssh_user, pkey=pkey)
+        except paramiko.SSHException:
+            logger.critical('SSH connection to server failed')
+
+            return None
+
+        return ssh
+
+    def _returncode_log(self, returncode: int) -> None:
+        match returncode:
+            case 2:
+                logger.error(
+                    'Rsync error (return code 2) - Protocol incompatibility')
+            case 3:
+                logger.error(
+                    'Rsync error (return code 3) - Errors selecting input/output files, dirs')
+            case 4:
+                logger.error(
+                    'Rsync error (return code 4) - Requested action not supported')
+            case 5:
+                logger.error(
+                    'Rsync error (return code 5) - Error starting client-server protocol')
+            case 10:
+                logger.error(
+                    'Rsync error (return code 10) - Error in socket I/O')
+            case 11:
+                logger.error(
+                    'Rsync error (return code 11) - Error in file I/O')
+            case 12:
+                logger.error(
+                    'Rsync error (return code 12) - Error in rsync protocol data stream')
+            case 22:
+                logger.error(
+                    'Rsync error (return code 22) - Error allocating core memory buffers')
+            case 23:
+                logger.warning(
+                    'Rsync error (return code 23) - Partial transfer due to error')
+            case 24:
+                logger.warning(
+                    'Rsync error (return code 24) - Partial transfer due to vanished source files')
+            case 30:
+                logger.error(
+                    'Rsync error (return code 30) - Timeout in data send/receive')
+            case 35:
+                logger.error(
+                    'Rsync error (return code 35) - Timeout waiting for daemon connection')
+            case _:
+                logger.error(
+                    'Rsync error (return code %d) - Check rsync(1) for details', returncode)
+
+    # Function to read configuration file
+    @timing
+    def run(self) -> int:
+        """Perform the backup"""
+
+        logger.info('Starting backup...')
+
+        try:
+            _notify('Starting backup...')
+        except NameError:
+            pass
+
+        self.define_backup_dir()
+        self.find_last_backup()
+
+        _, self._inputs_path = mkstemp(prefix='tmp_inputs', text=True)
+        count = 0
+
+        with open(self._inputs_path, 'w', encoding='utf-8') as fp:
+            for i in self.inputs:
+                if not os.path.exists(i):
+                    logger.warning('Input %s not found. Skipping', i)
+                else:
+                    fp.write(i)
+                    fp.write('\n')
+                    count += 1
+
+        if count == 0:
+            logger.info(
+                'No existing files or directories specified for backup. Nothing to do')
+
+            try:
+                _notify('Backup finished. No files copied')
+            except NameError:
+                pass
+
+            return 1
+
+        _, self._exclude_path = mkstemp(prefix='tmp_exclude', text=True)
+
+        with open(self._exclude_path, 'w', encoding='utf-8') 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'/usr/bin/rsync {self.options} --exclude-from={self._exclude_path} ' +\
+                f'--files-from={self._inputs_path} / "{self._server}{self._output_dir}"'
+        else:
+            rsync = f'/usr/bin/rsync {self.options} --link-dest="{self._last_backup}" --exclude-from=' +\
+                f'{self._exclude_path} --files-from={self._inputs_path} / "{self._server}{self._output_dir}"'
+
+        euid = os.geteuid()
+
+        if euid == 0 and self.ssh_keyfile is not None:
+            rsync = f'{rsync} -e \'ssh -i {self.ssh_keyfile} -o StrictHostKeyChecking=no\''
+        elif self._password_auth and which('sshpass'):
+            rsync = f'{rsync} -e \'sshpass -e ssh -l {self.ssh_user} -o StrictHostKeyChecking=no\''
+        else:
+            rsync = f'{rsync} -e \'ssh -o StrictHostKeyChecking=no\''
+
+        if self._remote and self.remote_sudo:
+            rsync = f'{rsync} --rsync-path="sudo rsync"'
+
+        args = shlex.split(rsync)
+
+        with Popen(args, stdin=PIPE, stdout=PIPE, stderr=STDOUT, shell=False) as p:
+            output: Union[bytes, List[str]]
+            output, _ = p.communicate()
+
+            try:
+                del os.environ['SSHPASS']
+            except KeyError:
+                pass
+
+            returncode = p.returncode
+
+        output = output.decode("utf-8").split('\n')
+
+        if returncode == 0:
+            if self._verbose:
+                logger.info('rsync: %s', output)
+            else:
+                logger.info('rsync: %s', output[-3])
+                logger.info('rsync: %s', output[-2])
+        else:
+            self._returncode_log(returncode)
+
+            if self._verbose:
+                if returncode in [23, 24]:
+                    logger.warning(output)
+                else:
+                    logger.error(output)
+
+        if self.keep != -1 and not self._remove_before:
+            self.remove_old_backups()
+
+        os.remove(self._inputs_path)
+        os.remove(self._exclude_path)
+
+        if self._remote:
+            assert self._ssh is not None
+
+            _, stdout, _ = self._ssh.exec_command(
+                f'if [ -d "{self._output_dir}" ]; then echo "ok"; fi')
+
+            output = stdout.read().decode('utf-8').strip()
+
+            if output == 'ok':
+                logger.info('Backup completed')
+
+                try:
+                    _notify('Backup completed')
+                except NameError:
+                    pass
+            else:
+                logger.error('Backup failed')
+
+                try:
+                    _notify('Backup failed (check log for details)')
+                except NameError:
+                    pass
+
+            if self._ssh:
+                self._ssh.close()
+        else:
+            if returncode != 0:
+                logger.error(
+                    'Some errors occurred while performing the backup')
+
+                try:
+                    _notify(
+                        'Some errors occurred while performing the backup. Check log for details')
+                except NameError:
+                    pass
+
+                return 4
+
+            logger.info('Backup completed')
+
+            try:
+                _notify('Backup completed')
+            except NameError:
+                pass
+
+            return 0
+
+
+def _parse_arguments() -> argparse.Namespace:
+    euid = os.geteuid()
+
+    if euid == 0:
+        user = os.getenv('SUDO_USER')
+    else:
+        user = os.getenv('USER')
+
+    homedir = os.path.expanduser(f'~{user}')
+
+    parser = argparse.ArgumentParser(prog='simple_backup',
+                                     description='Simple backup script written in Python that uses rsync to copy files',
+                                     epilog='See simple_backup(1) manpage for full documentation',
+                                     formatter_class=MyFormatter)
+
+    parser.add_argument('-v', '--verbose', action='store_true',
+                        help='More verbose output')
+    parser.add_argument('-c', '--config', default=f'{homedir}/.config/simple_backup/simple_backup.conf',
+                        help='Specify location of configuration file')
+    parser.add_argument('-i', '--inputs', 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(
+        '-u', '--user', help='Explicitly specify the user running the backup')
+    parser.add_argument('-s', '--checksum', action='store_true',
+                        help='Use checksum rsync option to compare files')
+    parser.add_argument(
+        '--ssh-host', help='Server hostname (for remote backup)')
+    parser.add_argument(
+        '--ssh-user', help='Username to connect to server (for remote backup)')
+    parser.add_argument('--keyfile', help='SSH key location')
+    parser.add_argument('-z', '--compress', action='store_true',
+                        help='Compress data during the transfer')
+    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')
+    parser.add_argument('--rsync-options', nargs='+',
+                        choices=['a', 'l', 'p', 't', 'g', 'o',
+                                 'c', 'h', 's', 'D', 'H', 'X'],
+                        help='Specify options for rsync')
+    parser.add_argument('--remote-sudo', action='store_true',
+                        help='Run rsync on remote server with sudo if allowed')
+    parser.add_argument('--numeric-ids', action='store_true',
+                        help='Use rsync \'--numeric-ids\' option (don\'t map uid/gid values by name)')
+
+    args = parser.parse_args()
+
+    return args
+
+
+def _expand_inputs(inputs, user: Optional[str] = None):
+    expanded_inputs = []
+
+    for i in inputs:
+        if i == '':
+            continue
+
+        if user is not None:
+            i_ex = glob(os.path.expanduser(i.replace('~', f'~{user}')))
+        else:
+            i_ex = glob(i)
+
+            if '~' in i:
+                logger.warning('Cannot expand \'~\'. No user specified')
+
+        if len(i_ex) == 0:
+            logger.warning(
+                'No file or directory matching input %s. Skipping...', i)
+        else:
+            expanded_inputs.extend(i_ex)
+
+    return expanded_inputs
+
+
+def _read_config(config_file, user: Optional[str] = None):
+    config_args = {'inputs': None,
+                   'output': None,
+                   'exclude': None,
+                   'keep': -1,
+                   'ssh_host': None,
+                   'ssh_user': None,
+                   'ssh_keyfile': None,
+                   'remote_sudo': False,
+                   'numeric_ids': False}
+
+    if not os.path.isfile(config_file):
+        if user is not None:
+            logger.warning('Config file %s does not exist', config_file)
+        else:
+            logger.warning(
+                'User not specified. Can\'t read configuration file')
+
+        return config_args
+
+    config = configparser.ConfigParser()
+    config.read(config_file)
+
+    section = 'backup'
+
+    # Allow compatibility with previous version of config file
+    try:
+        inputs = config.get(section, 'inputs')
+    except configparser.NoSectionError:
+        section = 'default'
+        inputs = config.get(section, 'inputs')
+
+    inputs = inputs.split(',')
+    inputs = _expand_inputs(inputs, user)
+    inputs = list(set(inputs))
+
+    config_args['inputs'] = inputs
+
+    output = config.get(section, 'backup_dir')
+
+    if user is not None:
+        output = os.path.expanduser(output.replace('~', f'~{user}'))
+    elif user is None and '~' in output:
+        logger.warning('Cannot expand \'~\', no user specified')
+
+    config_args['output'] = output
+
+    try:
+        exclude = config.get(section, 'exclude')
+        exclude = exclude.split(',')
+    except configparser.NoOptionError:
+        exclude = []
+
+    config_args['exclude'] = exclude
+
+    try:
+        keep = config.getint(section, 'keep')
+    except configparser.NoOptionError:
+        keep = -1
+
+    config_args['keep'] = keep
+
+    try:
+        ssh_host = config.get('server', 'ssh_host')
+        ssh_user = config.get('server', 'ssh_user')
+    except (configparser.NoSectionError, configparser.NoOptionError):
+        ssh_host = None
+        ssh_user = None
+
+    config_args['ssh_host'] = ssh_host
+    config_args['ssh_user'] = ssh_user
+
+    try:
+        ssh_keyfile = config.get('server', 'ssh_keyfile')
+    except (configparser.NoSectionError, configparser.NoOptionError):
+        ssh_keyfile = None
+
+    config_args['ssh_keyfile'] = ssh_keyfile
+
+    try:
+        remote_sudo = config.getboolean('server', 'remote_sudo')
+    except (configparser.NoSectionError, configparser.NoOptionError):
+        remote_sudo = False
+
+    config_args['remote_sudo'] = remote_sudo
+
+    try:
+        numeric_ids = config.getboolean('server', 'numeric_ids')
+    except (configparser.NoSectionError, configparser.NoOptionError):
+        numeric_ids = False
+
+    config_args['numeric_ids'] = numeric_ids
+
+    return config_args
+
+
+def _notify(text: str) -> None:
+    euid = os.geteuid()
+
+    if euid == 0:
+        uid = os.getenv('SUDO_UID')
+    else:
+        uid = euid
+
+    if uid is None:
+        return
+
+    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() -> int:
+    """Main"""
+
+    args = _parse_arguments()
+
+    if args.user:
+        user = args.user
+        homedir = os.path.expanduser(f'~{user}')
+    else:
+        euid = os.geteuid()
+
+        if euid == 0:
+            user = os.getenv('SUDO_USER')
+
+            if user is not None:
+                homedir = os.path.expanduser(f'~{user}')
+            else:
+                logger.warning(
+                    'Failed to detect user. You can use -u/--user parameter to manually specify it')
+                homedir = None
+        else:
+            user = os.getenv('USER')
+            homedir = os.getenv('HOME')
+
+    if homedir is None:
+        homedir = ''
+
+    if args.no_syslog:
+        try:
+            logger.removeHandler(j_handler)
+        except NameError:
+            pass
+
+    try:
+        config_args = _read_config(args.config, user)
+    except (configparser.NoSectionError, configparser.NoOptionError):
+        logger.critical('Bad configuration file')
+
+        return 6
+
+    inputs = args.inputs if args.inputs is not None else config_args['inputs']
+    output = args.output if args.output is not None else config_args['output']
+    exclude = args.exclude if args.exclude is not None else config_args['exclude']
+    keep = args.keep if args.keep is not None else config_args['keep']
+    ssh_host = args.ssh_host if args.ssh_host is not None else config_args['ssh_host']
+    ssh_user = args.ssh_user if args.ssh_user is not None else config_args['ssh_user']
+    ssh_keyfile = args.keyfile if args.keyfile is not None else config_args['ssh_keyfile']
+    remote_sudo = args.remote_sudo or config_args['remote_sudo']
+
+    if args.rsync_options is None:
+        rsync_options = ['-a', '-r', '-v', '-h', '-H',
+                         '-X', '-s', '--ignore-missing-args', '--mkpath']
+    else:
+        rsync_options = ['-r', '-v']
+
+        for ro in args.rsync_options:
+            rsync_options.append(f'-{ro}')
+
+    if args.checksum:
+        rsync_options.append('-c')
+
+    if args.compress:
+        rsync_options.append('-z')
+
+    if args.numeric_ids or config_args['numeric_ids']:
+        rsync_options.append('--numeric-ids')
+
+    rsync_options = ' '.join(rsync_options)
+
+    backup = Backup(inputs, output, exclude, keep, rsync_options, ssh_host, ssh_user, ssh_keyfile,
+                    remote_sudo, remove_before=args.remove_before_backup, verbose=args.verbose)
+
+    return_code = backup.check_params(homedir)
+
+    if return_code == 0:
+        return backup.run()
+
+    return return_code
+
+
+if __name__ == '__main__':
+    simple_backup()