src/bot.py

@@ -0,0 +1,227 @@
+#!/usr/bin/env python3
+
+import asyncio
+import importlib.util
+import inspect
+import json
+import os
+import ssl
+import sys
+
+import yaml
+
+from src.channel_manager import ChannelManager
+from src.logger import Logger
+from src.plugin_base import PluginBase
+from src.sasl import handle_sasl, handle_authenticate, handle_903
+
+
+class Bot:
+    def __init__(self, config_file):
+        self.config = self.load_config(config_file)
+        self.validate_config(self.config)
+        self.connection_string = self.config['Database'].get('ConnectionString')
+        self.channel_manager = ChannelManager()
+        self.logger = Logger('logs/elitebot.log')
+        self.connected = False
+        self.reader = None
+        self.writer = None
+        self.running = True
+        self.plugins = []
+        self.load_plugins()
+
+    def validate_config(self, config):
+        required_fields = [
+            ['Connection', 'Port'],
+            ['Connection', 'Hostname'],
+            ['Connection', 'Nick'],
+            ['Connection', 'Ident'],
+            ['Connection', 'Name'],
+            ['Database', 'ConnectionString']
+        ]
+
+        for field in required_fields:
+            if not self.get_nested_config_value(config, field):
+                raise ValueError(f'Missing required config field: {" -> ".join(field)}')
+
+    def get_nested_config_value(self, config, keys):
+        value = config
+        for key in keys:
+            value = value.get(key)
+            if value is None:
+                return None
+        return value
+
+    def load_plugins(self):
+        self.plugins = []
+        plugin_folder = './plugins'
+        for filename in os.listdir(plugin_folder):
+            if filename.endswith('.py'):
+                filepath = os.path.join(plugin_folder, filename)
+                spec = importlib.util.spec_from_file_location('module.name', filepath)
+                module = importlib.util.module_from_spec(spec)
+                spec.loader.exec_module(module)
+                for name, obj in inspect.getmembers(module):
+                    if inspect.isclass(obj) and issubclass(obj, PluginBase) and obj is not PluginBase:
+                        plugin_instance = obj(self)
+                        self.plugins.append(plugin_instance)
+
+    def load_config(self, config_file):
+        _, ext = os.path.splitext(config_file)
+        try:
+            with open(config_file, 'r') as file:
+                if ext == '.json':
+                    config = json.load(file)
+                elif ext == '.yaml' or ext == '.yml':
+                    config = yaml.safe_load(file)
+                else:
+                    raise ValueError(f'Unsupported file extension: {ext}')
+        except FileNotFoundError as e:
+            self.logger.error(f'Error loading config file: {e}')
+            raise
+        except (json.JSONDecodeError, yaml.YAMLError) as e:
+            self.logger.error(f'Error parsing config file: {e}')
+            raise
+        return config
+
+    def decode(self, bytes):
+        for encoding in ['utf-8', 'latin1', 'iso-8859-1', 'cp1252']:
+            try:
+                return bytes.decode(encoding)
+            except UnicodeDecodeError:
+                continue
+        self.logger.error('Could not decode byte string with any known encoding')
+        return bytes.decode('utf-8', 'ignore')
+
+    async def ircsend(self, msg):
+        try:
+            if msg != '':
+                self.logger.info(f'Sending command: {msg}')
+                self.writer.write(bytes(f'{msg}\r\n', 'UTF-8'))
+                await self.writer.drain()
+        except Exception as e:
+            self.logger.error(f'Error sending IRC message: {e}')
+            raise
+
+    def parse_message(self, message):
+        parts = message.split()
+        if not parts:
+            return None, None, []
+        source = parts[0][1:] if parts[0].startswith(':') else None
+        command = parts[1] if source else parts[0]
+        args_start = 2 if source else 1
+        args = []
+        trailing_arg_start = None
+        for i, part in enumerate(parts[args_start:], args_start):
+            if part.startswith(':'):
+                trailing_arg_start = i
+                break
+            else:
+                args.append(part)
+        if trailing_arg_start is not None:
+            args.append(' '.join(parts[trailing_arg_start:])[1:])
+        return source, command, args
+
+    async def connect(self):
+        try:
+            ssl_context = None
+            if str(self.config['Connection'].get('Port'))[:1] == '+':
+                ssl_context = ssl.create_default_context(ssl.Purpose.SERVER_AUTH)  # Corrected here
+
+            self.reader, self.writer = await asyncio.open_connection(
+                self.config['Connection'].get('Hostname'),
+                int(self.config['Connection'].get('Port')[1:]) if ssl_context else int(
+                    self.config['Connection'].get('Port')),
+                ssl=ssl_context
+            )
+
+            await self.ircsend(f'NICK {self.config["Connection"].get("Nick")}')
+            await self.ircsend(
+                f'USER {self.config["Connection"].get("Ident")} * * :{self.config["Connection"].get("Name")}')
+            if self.config['SASL'].get('UseSASL'):
+                await self.ircsend('CAP REQ :sasl')
+        except Exception as e:
+            self.logger.error(f'Error establishing connection: {e}')
+            self.connected = False
+            return
+
+    async def start(self):
+        while True:
+            if not self.connected:
+                try:
+                    await self.connect()
+                    self.connected = True
+                except Exception as e:
+                    self.logger.error(f'Connection error: {e}')
+                    await asyncio.sleep(60)
+                    continue
+
+            try:
+                recvText = await self.reader.read(2048)
+                if not recvText:
+                    self.connected = False
+                    continue
+
+                ircmsg = self.decode(recvText)
+
+                if '\r\n' in ircmsg:
+                    messages = ircmsg.split('\r\n')
+                elif '\n' in ircmsg:
+                    messages = ircmsg.split('\n')
+                else:
+                    messages = [ircmsg]  # If no newline characters, treat the whole message as a single message
+
+                for message in messages:
+                    if message:  # Check if message is not empty
+                        source, command, args = self.parse_message(message)
+                        self.logger.debug(f'Received: source: {source} | command: {command} | args: {args}')
+
+                match command:
+                    case 'PING':
+                        nospoof = args[0][1:] if args[0].startswith(':') else args[0]
+                        await self.ircsend(f'PONG :{nospoof}')
+                        continue
+                    case 'PRIVMSG':
+                        channel, message = args[0], args[1]
+                        source_nick = source.split('!')[0]
+
+                        if message.startswith('&'):
+                            cmd, *cmd_args = message[1:].split()
+                            self.handle_command(source_nick, channel, cmd, cmd_args)
+                        elif args[1].startswith('\x01VERSION\x01'):
+                            source_nick = source.split('!')[0]
+                            await self.ircsend(f'NOTICE {source_nick} :\x01VERSION EliteBot 0.1\x01')
+
+                        for plugin in self.plugins:
+                            await plugin.handle_message(source_nick, channel, message)
+                    case 'CAP':
+                        if args[1] == 'ACK' and 'sasl' in args[2]:
+                            await handle_sasl(self.config, self.ircsend)
+                    case 'AUTHENTICATE':
+                        await handle_authenticate(args, self.config, self.ircsend)
+                    case 'INVITE':
+                        channel = args[1]
+                        await self.ircsend(f'JOIN {channel}')
+                        self.channel_manager.save_channel(channel)
+                    case 'VERSION':
+                        await self.ircsend(f'NOTICE {source_nick} :I am a bot version 1.0.0')
+                    case '001':
+                        for channel in self.channel_manager.get_channels():
+                            await self.ircsend(f'JOIN {channel}')
+                    case '903':
+                        await handle_903(self.ircsend)
+                    case _:
+                        continue
+            except Exception as e:
+                self.logger.error(f'General error: {e}')
+                self.connected = False
+
+
+if __name__ == '__main__':
+    try:
+        bot = Bot(sys.argv[1])
+        asyncio.run(bot.start())
+    except KeyboardInterrupt:
+        print('\nEliteBot has been stopped.')
+    except Exception as e:
+        print(f'An unexpected error occurred: {e}')

src/sasl.py

@@ -5,7 +5,7 @@ NULL_BYTE = '\x00'
 ENCODING = 'UTF-8'
 
 
-def handle_sasl(config, ircsend):
+async def handle_sasl(config, ircsend):
     """
     Handles SASL authentication by sending an AUTHENTICATE command.
 
@@ -13,10 +13,10 @@ def handle_sasl(config, ircsend):
     config (dict): Configuration dictionary
     ircsend (function): Function to send IRC commands
     """
-    ircsend('AUTHENTICATE PLAIN')
+    await ircsend('AUTHENTICATE PLAIN')
 
 
-def handle_authenticate(args, config, ircsend):
+async def handle_authenticate(args, config, ircsend):
     """
     Handles the AUTHENTICATE command response.
 
@@ -31,16 +31,16 @@ def handle_authenticate(args, config, ircsend):
                         f'{config["SASL"]["SASLNick"]}{NULL_BYTE}'
                         f'{config["SASL"]["SASLPassword"]}')
             ap_encoded = base64.b64encode(authpass.encode(ENCODING)).decode(ENCODING)
-            ircsend(f'AUTHENTICATE {ap_encoded}')
+            await ircsend(f'AUTHENTICATE {ap_encoded}')
         else:
             raise KeyError('SASLNICK and/or SASLPASS not found in config')
 
 
-def handle_903(ircsend):
+async def handle_903(ircsend):
     """
     Handles the 903 command by sending a CAP END command.
 
     Parameters:
     ircsend (function): Function to send IRC commands
     """
-    ircsend('CAP END')
+    await ircsend('CAP END')