Got rid of custom exceptions.

docs/source/rcon.rst

@@ -20,10 +20,18 @@ rcon.console module
    :undoc-members:
    :show-inheritance:
 
-rcon.exceptions module
-----------------------
+rcon.errorhandler module
+------------------------
 
-.. automodule:: rcon.exceptions
+.. automodule:: rcon.errorhandler
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
+rcon.gui module
+---------------
+
+.. automodule:: rcon.gui
    :members:
    :undoc-members:
    :show-inheritance:
@@ -52,6 +60,14 @@ rcon.rconshell module
    :undoc-members:
    :show-inheritance:
 
+rcon.readline module
+--------------------
+
+.. automodule:: rcon.readline
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
 Module contents
 ---------------
 

rcon/__init__.py

@@ -1,16 +1,7 @@
 """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'
-]
+__all__ = ['Client', 'rconcmd']

rcon/config.py

@@ -7,8 +7,6 @@ from os import getenv, name
 from pathlib import Path
 from typing import Dict, Iterator, NamedTuple, Tuple
 
-from rcon.exceptions import InvalidConfig
-
 
 __all__ = ['CONFIG_FILE', 'LOG_FORMAT', 'Config', 'servers']
 
@@ -39,12 +37,9 @@ class Config(NamedTuple):
         try:
             host, port = string.split(':')
         except ValueError:
-            raise InvalidConfig(f'Invalid socket: {string}.') from None
+            raise ValueError(f'Invalid socket: {string}.') from None
 
-        try:
-            port = int(port)
-        except ValueError:
-            raise InvalidConfig(f'Not an integer: {port}.') from None
+        port = int(port)
 
         try:
             passwd, host = host.rsplit('@', maxsplit=1)

rcon/console.py

@@ -3,7 +3,6 @@
 from getpass import getpass
 
 from rcon.config import Config
-from rcon.exceptions import RequestIdMismatch, WrongPassword
 from rcon.proto import Client
 
 
@@ -83,8 +82,8 @@ def login(client: Client, passwd: str) -> str:
     while True:
         try:
             client.login(passwd)
-        except WrongPassword:
-            print('Invalid password.')
+        except RuntimeError as error:
+            print(error)
             passwd = read_passwd()
             continue
 
@@ -113,7 +112,7 @@ def process_input(client: Client, passwd: str, prompt: str) -> bool:
 
     try:
         result = client.run(command, *args)
-    except RequestIdMismatch:
+    except RuntimeError:
         print(MSG_SESSION_TIMEOUT)
 
         try:

rcon/errorhandler.py

@@ -1,32 +1,35 @@
 """Common errors handler."""
 
 from logging import Logger
+from socket import timeout
 from sys import exit    # pylint: disable=W0622
-from typing import Iterable, Tuple
 
 
 __all__ = ['ErrorHandler']
 
 
-ErrorMap = Iterable[Tuple[Exception, str, int]]
-
-
 class ErrorHandler:
     """Handles common errors and exits."""
 
-    __slots__ = ('errors', 'logger')
+    __slots__ = ('logger',)
 
-    def __init__(self, errors: ErrorMap, logger: Logger):
+    def __init__(self, logger: Logger):
         """Sets the logger."""
-        self.errors = errors
         self.logger = logger
 
     def __enter__(self):
         return self
 
-    def __exit__(self, typ, value, _):
+    def __exit__(self, _, value, __):
         """Checks for connection errors and exits respectively."""
-        for exception, message, returncode in self.errors:
-            if typ is exception or isinstance(value, exception):
-                self.logger.error(message)
-                exit(returncode)
+        if isinstance(value, ConnectionRefusedError):
+            self.logger.error('Connection refused.')
+            exit(3)
+
+        if isinstance(value, (TimeoutError, timeout)):
+            self.logger.error('Connection timed out.')
+            exit(4)
+
+        if isinstance(value, RuntimeError):
+            self.logger.error(str(value))
+            exit(5)

rcon/exceptions.py

@@ -1,22 +0,0 @@
-"""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."""

rcon/gui.py

@@ -14,7 +14,6 @@ require_version('Gtk', '3.0')
 from gi.repository import Gtk
 
 from rcon.config import LOG_FORMAT
-from rcon.exceptions import RequestIdMismatch, WrongPassword
 from rcon.proto import Client
 
 
@@ -203,15 +202,13 @@ class GUI(Gtk.Window):  # pylint: disable=R0902
         try:
             result = self.run_rcon()
         except ValueError as error:
-            self.show_error(' '.join(error.args))
+            self.show_error(str(error))
         except ConnectionRefusedError:
             self.show_error('Connection refused.')
         except (TimeoutError, timeout):
             self.show_error('Connection timed out.')
-        except RequestIdMismatch:
-            self.show_error('Request ID mismatch.')
-        except WrongPassword:
-            self.show_error('Invalid password.')
+        except RuntimeError as error:
+            self.show_error(str(error))
         else:
             self.result_text = result
 

rcon/proto.py

@@ -7,9 +7,6 @@ from random import randint
 from socket import SOCK_STREAM, socket
 from typing import IO, NamedTuple, Optional
 
-from rcon.exceptions import RequestIdMismatch
-from rcon.exceptions import WrongPassword
-
 
 __all__ = [
     'LittleEndianSignedInt32',
@@ -172,36 +169,27 @@ class Client:
             file.write(bytes(packet))
 
         with self._socket.makefile('rb') as file:
-            response = Packet.read(file)
-
-        if response.id == packet.id:
-            return response
-
-        raise RequestIdMismatch(packet.id, response.id)
+            return Packet.read(file)
 
-    def login(self, passwd: str) -> Packet:
+    def login(self, passwd: str) -> bool:
         """Performs a login."""
-        packet = Packet.make_login(passwd)
+        response = self.communicate(Packet.make_login(passwd))
 
-        try:
-            return self.communicate(packet)
-        except RequestIdMismatch as mismatch:
-            if mismatch.received == -1:
-                raise WrongPassword() from None
+        if response.id == -1:
+            raise RuntimeError('Wrong password.')
 
-            raise
+        return True
 
     def run(self, command: str, *arguments: str, raw: bool = False) -> str:
         """Runs a command."""
-        packet = Packet.make_command(command, *arguments)
+        request = Packet.make_command(command, *arguments)
+        response = self.communicate(request)
 
-        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)
+        if response.id != request.id:
+            if self.passwd is not None:
+                if self.login(self.passwd):
+                    return self.run(command, *arguments)
 
-            raise
+            raise RuntimeError('Request ID mismatch.')
 
         return response if raw else response.payload

rcon/rconclt.py

@@ -4,26 +4,17 @@ from argparse import ArgumentParser, Namespace
 from getpass import getpass
 from logging import DEBUG, INFO, basicConfig, getLogger
 from pathlib import Path
-from socket import timeout
 from sys import exit    # pylint: disable=W0622
 from typing import Tuple
 
 from rcon.errorhandler import ErrorHandler
-from rcon.exceptions import InvalidConfig
 from rcon.config import CONFIG_FILE, LOG_FORMAT, Config, servers
-from rcon.exceptions import RequestIdMismatch, WrongPassword
 from rcon.proto import Client
 
 
 __all__ = ['get_credentials', 'main']
 
 
-ERRORS = (
-    (ConnectionRefusedError, 'Connection refused.', 3),
-    ((TimeoutError, timeout), 'Connection timeout.', 4),
-    (RequestIdMismatch, 'Unexpected request ID mismatch.', 5),
-    (WrongPassword, 'Wrong password.', 6)
-)
 LOGGER = getLogger('rconclt')
 
 
@@ -49,7 +40,7 @@ def get_credentials(args: Namespace) -> Tuple[str, int, str]:
 
     try:
         host, port, passwd = Config.from_string(args.server)
-    except InvalidConfig:
+    except ValueError:
         try:
             host, port, passwd = servers(args.config)[args.server]
         except KeyError:
@@ -74,7 +65,7 @@ def main() -> None:
     basicConfig(format=LOG_FORMAT, level=DEBUG if args.debug else INFO)
     host, port, passwd = get_credentials(args)
 
-    with ErrorHandler(ERRORS, LOGGER):
+    with ErrorHandler(LOGGER):
         with Client(host, port, timeout=args.timeout) as client:
             client.login(passwd)
             text = client.run(args.command, *args.argument)

rcon/rconshell.py

@@ -3,10 +3,8 @@
 from argparse import ArgumentParser, Namespace
 from logging import INFO, basicConfig, getLogger
 from pathlib import Path
-from socket import timeout
 
 from rcon.errorhandler import ErrorHandler
-from rcon.exceptions import RequestIdMismatch
 from rcon.rconclt import get_credentials
 from rcon.readline import CommandHistory
 from rcon.config import CONFIG_FILE, LOG_FORMAT
@@ -15,11 +13,7 @@ from rcon.console import PROMPT, rconcmd
 
 __all__ = ['get_args', 'main']
 
-ERRORS = (
-    (ConnectionRefusedError, 'Connection refused.', 3),
-    ((TimeoutError, timeout), 'Connection timeout.', 4),
-    (RequestIdMismatch, 'Unexpected request ID mismatch.', 5)
-)
+
 LOGGER = getLogger('rconshell')
 
 
@@ -46,6 +40,6 @@ def main() -> None:
     else:
         host = port = passwd = None
 
-    with ErrorHandler(ERRORS, LOGGER):
+    with ErrorHandler(LOGGER):
         with CommandHistory(LOGGER):
             rconcmd(host, port, passwd, prompt=args.prompt)