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  1. 9
      .gitignore
  2. 4
      .readthedocs.yml
  3. 7
      .travis.yml
  4. 674
      LICENSE.txt
  5. 28
      Makefile
  6. 50
      README.md
  7. 20
      docs/Makefile
  8. 35
      docs/make.bat
  9. 4
      docs/source/bugs.rst
  10. 64
      docs/source/conf.py
  11. 23
      docs/source/index.rst
  12. 15
      docs/source/installation.rst
  13. 700
      docs/source/license.rst
  14. 7
      docs/source/modules.rst
  15. 61
      docs/source/rcon.rst
  16. 66
      docs/source/usage.rst
  17. 8
      files/rconclt
  18. 8
      files/rconshell
  19. 16
      rcon/__init__.py
  20. 71
      rcon/config.py
  21. 144
      rcon/console.py
  22. 22
      rcon/exceptions.py
  23. 186
      rcon/proto.py
  24. 86
      rcon/rconclt.py
  25. 49
      rcon/rconshell.py
  26. 21
      setup.py

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*.egg-info
*.pyc
*~
.buildconfig
.eggs
.installed_files.txt
__pycache__
build
dist

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version: 2
python:
version: 3.8

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language: python
python:
- 3.8
- 3.9
script:
- "python setup.py install"
- pytest

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LICENSE.txt
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GNU GENERAL PUBLIC LICENSE
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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
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.
<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
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/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<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, 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 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
<http://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
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

28
Makefile
View File

@ -0,0 +1,28 @@
FILE_LIST = ./.installed_files.txt
.PHONY: build clean install publish pull push uninstall
build:
@ ./setup.py sdist bdist_wheel
clean:
@ rm -Rf ./build ./dist
default: | pull clean install
install:
@ ./setup.py install --record $(FILE_LIST)
publish:
@ twine upload dist/*
pull:
@ git pull
push:
@ git push
pypi: | build publish clean
uninstall:
@ while read FILE; do echo "Removing: $$FILE"; rm "$$FILE"; done < $(FILE_LIST)

50
README.md
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# rcon
An [RCON protocol](https://developer.valvesoftware.com/wiki/Source_RCON_Protocol) client implementation.
## Requirements
[![Build Status](https://travis-ci.com/conqp/rcon.svg?branch=master)](https://travis-ci.com/conqp/mcipc)
`mcipc` requires Python 3.8 or higher.
## Documentation
[![Documentation Status](https://readthedocs.org/projects/rcon/badge/?version=latest)](https://rcon.readthedocs.io/en/latest/?badge=latest)
Documentation is available on [readthedocs](https://rcon.readthedocs.io/en/latest).
## Installations
Install mcipc from the [AUR](https://aur.archlinux.org/packages/python-rcon/) or via:
pip install mcipc
## Quick start
The `RCON` protocol is used to remotely control a game server, i.e. execute
commands on a game server and receive the respective results.
```python
from rcon import Client
with Client('127.0.0.1', 5000) as client:
client.login('mysecretpassword') # Perform initial login.
seed = client.seed # Get the server's seed.
players = client.players # Get the server's players info.
mansion = client.locate('Mansion') # Get the next mansion's location.
print(seed)
print(players)
print(mansion)
```
## License
Copyright (C) 2018-2020 Richard Neumann <mail at richard dash neumann period de>
rcon 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.
rcon 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 rcon. If not, see <http://www.gnu.org/licenses/>.

20
docs/Makefile
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@ -0,0 +1,20 @@
# Minimal makefile for Sphinx documentation
#
# You can set these variables from the command line, and also
# from the environment for the first two.
SPHINXOPTS ?=
SPHINXBUILD ?= sphinx-build
SOURCEDIR = source
BUILDDIR = build
# Put it first so that "make" without argument is like "make help".
help:
@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
.PHONY: help Makefile
# Catch-all target: route all unknown targets to Sphinx using the new
# "make mode" option. $(O) is meant as a shortcut for $(SPHINXOPTS).
%: Makefile
@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)

35
docs/make.bat
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@ -0,0 +1,35 @@
@ECHO OFF
pushd %~dp0
REM Command file for Sphinx documentation
if "%SPHINXBUILD%" == "" (
set SPHINXBUILD=sphinx-build
)
set SOURCEDIR=source
set BUILDDIR=build
if "%1" == "" goto help
%SPHINXBUILD% >NUL 2>NUL
if errorlevel 9009 (
echo.
echo.The 'sphinx-build' command was not found. Make sure you have Sphinx
echo.installed, then set the SPHINXBUILD environment variable to point
echo.to the full path of the 'sphinx-build' executable. Alternatively you
echo.may add the Sphinx directory to PATH.
echo.
echo.If you don't have Sphinx installed, grab it from
echo.http://sphinx-doc.org/
exit /b 1
)
%SPHINXBUILD% -M %1 %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
goto end
:help
%SPHINXBUILD% -M help %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
:end
popd

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docs/source/bugs.rst
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Reporting bugs
==============
If you found a bug or want to suggest a new feature to be added top `mcpipc`, please open an appropriate issue on `GitHub <https://github.com/conqp/mcipc/issues>`_.

64
docs/source/conf.py
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@ -0,0 +1,64 @@
from os.path import abspath
from sys import path
import sphinx_rtd_theme
path.insert(0, abspath('../../'))
# Configuration file for the Sphinx documentation builder.
#
# This file only contains a selection of the most common options. For a full
# list see the documentation:
# https://www.sphinx-doc.org/en/master/usage/configuration.html
# -- Path setup --------------------------------------------------------------
# If extensions (or modules to document with autodoc) are in another directory,
# add these directories to sys.path here. If the directory is relative to the
# documentation root, use os.path.abspath to make it absolute, like shown here.
#
# import os
# import sys
# sys.path.insert(0, os.path.abspath('.'))
# -- Project information -----------------------------------------------------
project = 'rcon'
copyright = '2020, Richard Neumann'
author = 'Richard Neumann'
# The full version, including alpha/beta/rc tags
release = '1.4.5'
# -- General configuration ---------------------------------------------------
# Add any Sphinx extension module names here, as strings. They can be
# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
# ones.
extensions = [
'sphinx_rtd_theme',
'sphinx.ext.autodoc'
]
# Add any paths that contain templates here, relative to this directory.
templates_path = ['_templates']
# List of patterns, relative to source directory, that match files and
# directories to ignore when looking for source files.
# This pattern also affects html_static_path and html_extra_path.
exclude_patterns = []
# -- Options for HTML output -------------------------------------------------
# The theme to use for HTML and HTML Help pages. See the documentation for
# a list of builtin themes.
#
html_theme = 'sphinx_rtd_theme'
# Add any paths that contain custom static files (such as style sheets) here,
# relative to this directory. They are copied after the builtin static files,
# so a file named "default.css" will overwrite the builtin "default.css".
html_static_path = ['_static']

23
docs/source/index.rst
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rcon - An RCON client library
=============================
`rcon` is a Python 3 library, which provides a client to interact with RCON servers.
It therefor implements the `RCON <https://developer.valvesoftware.com/wiki/Source_RCON_Protocol>`_ protocol.
.. toctree::
:maxdepth: 2
:caption: Contents:
installation
usage
modules
bugs
license
Indices and tables
==================
* :ref:`genindex`
* :ref:`modindex`
* :ref:`search`

15
docs/source/installation.rst
View File

@ -0,0 +1,15 @@
Installation
============
If you use `Arch Linux` or one of its derivatives, you can install `rcon` from the `AUR <https://aur.archlinux.org/packages/python-rcon/>`_.
Otherwise you can install `rcon` via pip:
.. code-block:: bash
pip install rcon
Requirements
============
`rcon` requires Python 3.8 or higher.

700
docs/source/license.rst
View File

@ -0,0 +1,700 @@
License
=======
GNU GENERAL PUBLIC LICENSE
--------------------------
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc.
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Everyone is permitted to copy and distribute verbatim copies of this
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--------
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occurring solely as a consequence of using peer-to-peer transmission
to receive a copy likewise does not require acceptance. However,
nothing other than this License grants you permission to propagate or
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
receives a license from the original licensors, to run, modify and
propagate that work, subject to this License. You are not responsible
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You may not impose any further restrictions on the exercise of the
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sale, or importing the Program or any portion of it.
11. Patents.
^^^^^^^^^^^^
A "contributor" is a copyright holder who authorizes use under this
License of the Program or a work on which the Program is based. The
work thus licensed is called the contributor's "contributor version".
A contributor's "essential patent claims" are all patent claims owned
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In the following three paragraphs, a "patent license" is any express
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patent against the party.
If you convey a covered work, knowingly relying on a patent license,
and the Corresponding Source of the work is not available for anyone
to copy, free of charge and under the terms of this License, through a
publicly available network server or other readily accessible means,
then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
patent license for this particular work, or (3) arrange, in a manner
consistent with the requirements of this License, to extend the patent
license to downstream recipients. "Knowingly relying" means you have
actual knowledge that, but for the patent license, your conveying the
covered work in a country, or your recipient's use of the covered work
in a country, would infringe one or more identifiable patents in that
country that you have reason to believe are valid.
If, pursuant to or in connection with a single transaction or
arrangement, you convey, or propagate by procuring conveyance of, a
covered work, and grant a patent license to some of the parties
receiving the covered work authorizing them to use, propagate, modify
or convey a specific copy of the covered work, then the patent license
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 work if you
are a party to an arrangement with a third party that is in the
business of distributing software, under which you make payment to the
third party based on the extent of your activity of conveying the
work, and under which the third party grants, to any of the parties
who would receive the covered work from you, a discriminatory patent
license (a) in connection with copies of the covered work conveyed by
you (or copies made from those copies), or (b) primarily 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 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 the Program, the only way you could
satisfy both those terms and this License would be to refrain entirely
from conveying the Program.
13. Use with the GNU Affero General Public License.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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
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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
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14. Revised Versions of this License.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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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.
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License, you may choose any version ever published by the Free
Software Foundation.
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.
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permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
^^^^^^^^^^^^^^^^^^^^^^^^^^^
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APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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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
How to Apply These Terms to Your New Programs
---------------------------------------------
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
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 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.
<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
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 <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper
mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<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, 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
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>.

7
docs/source/modules.rst
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rcon
====
.. toctree::
:maxdepth: 4
rcon

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docs/source/rcon.rst
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rcon package
============
Submodules
----------
rcon.config module
------------------
.. automodule:: rcon.config
:members:
:undoc-members:
:show-inheritance:
rcon.console module
-------------------
.. automodule:: rcon.console
:members:
:undoc-members:
:show-inheritance:
rcon.exceptions module
----------------------
.. automodule:: rcon.exceptions
:members:
:undoc-members:
:show-inheritance:
rcon.proto module
-----------------
.. automodule:: rcon.proto
:members:
:undoc-members:
:show-inheritance:
rcon.rconclt module
-------------------
.. automodule:: rcon.rconclt
:members:
:undoc-members:
:show-inheritance:
rcon.rconshell module
---------------------
.. automodule:: rcon.rconshell
:members:
:undoc-members:
:show-inheritance:
Module contents
---------------
.. automodule:: rcon
:members:
:undoc-members:
:show-inheritance:

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docs/source/usage.rst
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Usage
=====
For usage in code, there is the class :py:class:`rcon.Client`.
.. code-block:: python
from rcon import Client
with Client('127.0.0.1', 5000) as client:
client.login('mysecretpassword') # Perform initial login.
seed = client.seed # Get the server's seed.
players = client.players # Get the server's players info.
mansion = client.locate('Mansion') # Get the next mansion's location.
print(seed)
print(players)
print(mansion)
Configuration
-------------
`rconclt` servers can be configured in :file:`/etc/rcon.conf`.
The configuration file format is:
.. code-block:: ini
[<server_name>]
host = <hostname_or_ip_address>
port = <port>
passwd = <password>
prompt = <console_prompr>
The :code:`passwd` and :code:`prompt` entries are optional.
rconclt
-------
`rconclt` is an RCON client script to communicate with game servers via the RCON protocol using the shell.
To communicate with a server, run:
.. code-block:: bash
rconclt [options] <server> <command> [<args>...]
rconshell
---------
`rconshell` is an interactive RCON console to interact with game servers via the RCON protocol.
To start a shell, run:
.. code-block:: bash
rconshell [server] [options]
Handling connection timeouts.
-----------------------------
You can specify an optional :code:`timeout=<sec>` parameter on both `Query` and `RCON` clients.
If a timeout is reached during a connection attempt, it will raise a `socket.timeout <https://docs.python.org/3/library/socket.html#socket.timeout>`_ exception.
The following example will raise a connection timeout after 1.5 seconds:
.. code-block:: python
try:
with Client('127.0.0.1', 5000, timeout=1.5) as client:
<do_stuff>
except socket.timeout as timeout:
<handle_connection_timeout>
.. _configuration:

8
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#! /usr/bin/env python3
"""An RCON client."""
from rcon.rconclt import main
if __name__ == '__main__':
main()

8
files/rconshell
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#! /usr/bin/env python3
"""An interactive RCON shell."""
from rcon.rconshell import main
if __name__ == '__main__':
main()

16
rcon/__init__.py
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"""RCON client library."""
from rcon.console import rconcmd
from rcon.exceptions import InvalidConfig
from rcon.exceptions import RequestIdMismatch
from rcon.exceptions import WrongPassword
from rcon.proto import Client
__all__ = [
'InvalidConfig',
'RequestIdMismatch',
'WrongPassword',
'Client',
'rconcmd'
]

71
rcon/config.py
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"""RCON server configuration."""
from __future__ import annotations
from configparser import ConfigParser, SectionProxy
from logging import getLogger
from pathlib import Path
from typing import Dict, Iterator, NamedTuple, Tuple
from rcon.exceptions import InvalidConfig
__all__ = ['servers']
CONFIG = ConfigParser()
CONFIG_FILE = Path('/etc/rcon.conf')
LOGGER = getLogger('RCON Config')
class Config(NamedTuple):
"""Represents server configuration."""
host: str
port: int
passwd: str = None
prompt: str = 'RCON> '
@classmethod
def from_string(cls, string: str) -> Config:
"""Reads the credentials from the given string."""
try:
host, port = string.split(':')
except ValueError:
raise InvalidConfig(f'Invalid socket: {string}.') from None
try:
port = int(port)
except ValueError:
raise InvalidConfig(f'Not an integer: {port}.') from None
try:
passwd, host = host.rsplit('@', maxsplit=1)
except ValueError:
passwd = None
return cls(host, port, passwd)
@classmethod
def from_config_section(cls, section: SectionProxy) -> Config:
"""Creates a credentials tuple from
the respective config section.
"""
host = section['host']
port = section.getint('port')
passwd = section.get('passwd')
prompt = section.get('prompt')
return cls(host, port, passwd, prompt)
def entries(config_parser: ConfigParser) -> Iterator[Tuple[str, Config]]:
"""Yields entries."""
for section in config_parser.sections():
yield (section, Config.from_config_section(config_parser[section]))
def servers() -> Dict[str, Config]:
"""Returns a dictionary of servers."""
CONFIG.read(CONFIG_FILE)
return dict(entries(CONFIG))

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rcon/console.py
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"""An interactive console."""
from getpass import getpass
from typing import Union
from rcon.config import Config
from rcon.exceptions import RequestIdMismatch, WrongPassword
from rcon.proto import Client
__all__ = ['rconcmd']
EXIT_COMMANDS = {'exit', 'quit'}
MSG_QUERY_LATER = '\nOkay, I will ask again later.'
MSG_ABORTED = '\nAborted...'
MSG_LOGIN_ABORTED = '\nLogin aborted. Bye.'
MSG_EXIT = 'Bye.'
MSG_SESSION_TIMEOUT = 'Session timed out. Please login again.'
MSG_EXIT_USAGE = 'Usage: {} [<exit_code>].'
def read(prompt: str, typ: type = None) -> type:
"""Reads input and converts it to the respective type."""
while True:
raw = input(prompt)
if typ is not None:
try:
return typ(raw)
except (TypeError, ValueError):
print(f'Invalid {typ}: {raw}')
continue
return raw
def read_or_none(prompt: str, typ: type = None) -> type:
"""Reads the input and returns None on EOFError."""
try:
return read(prompt, typ=typ)
except EOFError:
print(MSG_QUERY_LATER)
return None
def login(client: Client, passwd: str) -> str:
"""Performs a login."""
if passwd is None:
passwd = getpass('Password: ')
logged_in = False
while not logged_in:
try:
logged_in = client.login(passwd)
except WrongPassword:
print('Invalid password.')
passwd = getpass('Password: ')
return passwd
def get_config(host: str, port: int, passwd: str, prompt: str) -> Config:
"""Reads the necessary arguments."""
while any(item is None for item in (host, port, passwd, prompt)):
if host is None:
host = read_or_none('Host: ')
if port is None:
port = read_or_none('Port: ', typ=int)
if passwd is None:
passwd = read_or_none('Password: ')
if prompt is None:
prompt = read_or_none('Prompt: ')
return Config(host, port, passwd, prompt)
def exit(exit_code: Union[int, str] = 0) -> int: # pylint: disable=W0622
"""Exits the interactive shell via exit command."""
print(MSG_EXIT)
return int(exit_code)
def rconcmd(host: str, port: int, passwd: str, prompt: str) -> int:
"""Initializes the console."""
try:
config = get_config(host, port, passwd, prompt)
except KeyboardInterrupt:
print(MSG_ABORTED)
return 1
with Client(config.host, config.port) as client:
try:
passwd = login(client, config.passwd)
except (EOFError, KeyboardInterrupt):
print(MSG_LOGIN_ABORTED)
return 1
while True:
try:
command = input(config.prompt)
except EOFError:
print(f'\n{MSG_EXIT}')
break
except KeyboardInterrupt:
print()
continue
try:
command, *args = command.split()
except ValueError:
continue
if command in EXIT_COMMANDS:
try:
return exit(*args) # pylint: disable=R1722
except (TypeError, ValueError):
print(MSG_EXIT_USAGE.format(command))
continue
try:
result = client.run(command, *args)
except RequestIdMismatch:
print(MSG_SESSION_TIMEOUT)
try:
passwd = login(client, passwd)
except (EOFError, KeyboardInterrupt):
print(MSG_LOGIN_ABORTED)
return 2
print(result)
return 0

22
rcon/exceptions.py
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"""RCON exceptions."""
__all__ = ['InvalidConfig', 'RequestIdMismatch', 'WrongPassword']
class InvalidConfig(ValueError):
"""Indicates invalid credentials."""
class RequestIdMismatch(Exception):
"""Indicates that the sent and received request IDs do not match."""
def __init__(self, sent: int, received: int):
"""Sets the sent and received request IDs."""
super().__init__(sent, received)
self.sent = sent
self.received = received
class WrongPassword(Exception):
"""Indicates a wrong RCON password."""

186
rcon/proto.py
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"""Low-level protocol stuff."""
from __future__ import annotations
from enum import Enum
from logging import getLogger
from random import randint
from socket import SOCK_STREAM, socket
from typing import NamedTuple
from rcon.exceptions import RequestIdMismatch
from rcon.exceptions import WrongPassword
__all__ = [
'LittleEndianSignedInt32',
'Type',
'Packet',
'Client',
'random_request_id'
]
LOGGER = getLogger(__file__)
TERMINATOR = '\x00\x00'
def random_request_id() -> LittleEndianSignedInt32:
"""Generates a random request ID."""
return LittleEndianSignedInt32(randint(0, LittleEndianSignedInt32.MAX))
class LittleEndianSignedInt32(int):
"""A little-endian, signed int32."""
MIN = -2_147_483_648
MAX = 2_147_483_647
def __init__(self, *_):
"""Checks the boundaries."""
super().__init__()
if not self.MIN <= self <= self.MAX:
raise ValueError('Signed int32 out of bounds:', self)
def __bytes__(self):
"""Returns the integer as signed little endian."""
return self.to_bytes(4, 'little', signed=True)
@classmethod
def from_bytes(cls, bytes_: bytes) -> LittleEndianSignedInt32:
"""Creates the integer from the given bytes."""
return super().from_bytes(bytes_, 'little', signed=True)
class Type(Enum):
"""Available packet types."""
LOGIN = 3
COMMAND = 2
RESPONSE = 0
def __int__(self):
"""Returns the actual integer value."""
return self.value
def __bytes__(self):
"""Returns the integer value as little endian."""
return int(self).to_bytes(4, 'little', signed=True)
@classmethod
def from_bytes(cls, bytes_: bytes) -> Type:
"""Creates a type from the given bytes."""
return cls(int.from_bytes(bytes_, 'little', signed=True))
class Packet(NamedTuple):
"""An RCON packet."""
id: LittleEndianSignedInt32
type: Type
payload: str
terminator: str = TERMINATOR
def __bytes__(self):
"""Returns the packet as bytes with prepended length."""
payload = bytes(self.id)
payload += bytes(self.type)
payload += self.payload.encode()
payload += self.terminator.encode()
size = len(payload).to_bytes(4, 'little', signed=True)
return size + payload
@classmethod
def from_bytes(cls, bytes_: bytes) -> Packet:
"""Creates a packet from the respective bytes."""
id_ = LittleEndianSignedInt32.from_bytes(bytes_[:4])
type_ = Type.from_bytes(bytes_[4:8])
payload = bytes_[8:-2].decode()
if (terminator := bytes_[-2:].decode()) != TERMINATOR:
LOGGER.warning('Unexpected terminator: %s', terminator)
return cls(id_, type_, payload, terminator)
@classmethod
def from_args(cls, *args: str) -> Packet:
"""Creates a command packet."""
return cls(random_request_id(), Type.COMMAND, ' '.join(args))
@classmethod
def from_login(cls, passwd: str) -> Packet:
"""Creates a login packet."""
return cls(random_request_id(), Type.LOGIN, passwd)
class Client:
"""An RCON client."""
__slots__ = ('_socket', 'host', 'port', 'timeout', 'passwd')
def __init__(self, host: str, port: int, *, timeout: float = None,
passwd: str = None):
"""Initializes the base client with the SOCK_STREAM socket type."""
self._socket = socket(type=SOCK_STREAM)
self.host = host
self.port = port
self.timeout = timeout
self.passwd = passwd
def __enter__(self):
"""Attempts an auto-login if a password is set."""
self._socket.__enter__()
self._socket.settimeout(self.timeout)
self._socket.connect((self.host, self.port))
if self.passwd is not None:
self.login(self.passwd)
return self
def __exit__(self, typ, value, traceback):
"""Delegates to the underlying socket's exit method."""
return self._socket.__exit__(typ, value, traceback)
def communicate(self, packet: Packet) -> Packet:
"""Sends and receives a packet."""
self._socket.send(bytes(packet))
header = self._socket.recv(4)
length = int.from_bytes(header, 'little')
payload = self._socket.recv(length)
response = Packet.from_bytes(payload)
if response.id == packet.id:
return response
raise RequestIdMismatch(packet.id, response.id)
def login(self, passwd: str) -> bool:
"""Performs a login."""
packet = Packet.from_login(passwd)
try:
self.communicate(packet)
except RequestIdMismatch as mismatch:
if mismatch.received == -1:
raise WrongPassword() from None
raise
return True
def run(self, command: str, *arguments: str) -> str:
"""Runs a command."""
packet = Packet.from_args(command, *arguments)
try:
response = self.communicate(packet)
except RequestIdMismatch:
if self.passwd is not None: # Re-authenticate and retry command.
self.login(self.passwd)
return self.run(command, *arguments)
raise
return response.payload

86
rcon/rconclt.py
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"""RCON client CLI."""
from argparse import ArgumentParser, Namespace
from getpass import getpass
from logging import DEBUG, INFO, basicConfig, getLogger
from socket import timeout
from sys import exit # pylint: disable=W0622
from typing import Tuple
from rcon.exceptions import InvalidConfig
from rcon.config import Config, servers
from rcon.exceptions import RequestIdMismatch, WrongPassword
from rcon.proto import Client
__all__ = ['get_credentials', 'main']
LOGGER = getLogger('rconclt')
LOG_FORMAT = '[%(levelname)s] %(name)s: %(message)s'
def get_args() -> Namespace:
"""Parses and returns the CLI arguments."""
parser = ArgumentParser(description='A Minecraft RCON client.')
parser.add_argument('server', help='the server to connect to')
parser.add_argument('-t', '--timeout', type=float, metavar='seconds',
help='connection timeout in seconds')
parser.add_argument('-d', '--debug', action='store_true',
help='print additional debug information')
parser.add_argument('command', help='command to execute on the server')
parser.add_argument('argument', nargs='*', default=(),
help='arguments for the command')
return parser.parse_args()
def get_credentials(server: str) -> Tuple[str, int, str]:
"""Get the credentials for a server from the respective server name."""
try:
host, port, passwd = Config.from_string(server)
except InvalidConfig:
try:
host, port, passwd = servers()[server]
except KeyError:
LOGGER.error('No such server: %s.', server)
exit(2)
if passwd is None:
try:
passwd = getpass('Password: ')
except (KeyboardInterrupt, EOFError):
print()
LOGGER.error('Aborted by user.')
exit(1)
return (host, port, passwd)
def main():
"""Runs the RCON client."""
args = get_args()
log_level = DEBUG if args.debug else INFO
basicConfig(level=log_level, format=LOG_FORMAT)
host, port, passwd = get_credentials(args.server)
try:
with Client(host, port, timeout=args.timeout) as client:
client.login(passwd)
text = client.run(args.command, *args.argument)
except ConnectionRefusedError:
LOGGER.error('Connection refused.')
exit(3)
except timeout:
LOGGER.error('Connection timeout.')
exit(4)
except RequestIdMismatch:
LOGGER.error('Unexpected request ID mismatch.')
exit(5)
except WrongPassword:
LOGGER.error('Wrong password.')
exit(6)
else:
print(text, flush=True)

49
rcon/rconshell.py
View File

@ -0,0 +1,49 @@
"""An interactive RCON shell."""
from argparse import ArgumentParser, Namespace
from logging import INFO, basicConfig, getLogger
from socket import timeout
from sys import exit # pylint: disable=W0622
from rcon.rconclt import get_credentials
from rcon.console import rconcmd
__all__ = ['get_args', 'main']
LOGGER = getLogger('rconshell')
LOG_FORMAT = '[%(levelname)s] %(name)s: %(message)s'
def get_args() -> Namespace:
"""Parses and returns the CLI arguments."""
parser = ArgumentParser(description='An interactive RCON shell.')
parser.add_argument('server', nargs='?', help='the server to connect to')
parser.add_argument('-p', '--prompt', default='RCON> ', metavar='PS1',
help='the shell prompt')
return parser.parse_args()
def main():
"""Runs the RCON shell."""
args = get_args()
basicConfig(level=INFO, format=LOG_FORMAT)
if server := args.server:
host, port, passwd = get_credentials(server)
else:
host = port = passwd = None
try:
exit_code = rconcmd(host, port, passwd, args.prompt)
except ConnectionRefusedError:
LOGGER.error('Connection refused.')
exit(3)
except timeout:
LOGGER.error('Connection timeout.')
exit(4)
exit(exit_code)

21
setup.py
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@ -0,0 +1,21 @@
#! /usr/bin/env python
"""Installation script."""
from setuptools import setup
setup(
name='rcon',
version_format='{tag}',
setup_requires=['setuptools-git-version'],
author='Richard Neumann',
author_email='[email protected]',
python_requires='>=3.8',
packages=['rcon'],
scripts=['files/rconclt', 'files/rconshell'],
url='https://github.com/conqp/rcon',
license='GPLv3',
description='A RCON client library library.',
long_description=open('README.md').read(),
long_description_content_type="text/markdown",
keywords='python rcon client'
)
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