del not .remove on dicts

logs.py

@@ -1,5 +1,5 @@
 #!/usr/bin/python3
-from datetime import datetime as dt
+from datetime import datetime as dt, UTC
 from sys import stdout, stderr
 from typing import Union
 
@@ -15,7 +15,8 @@ def log(
     else:
         stream = stdout
     if time == "now":
-        dtime = dt.now()
+        dtime = dt.now(UTC)
+        dtime.replace(tzinfo=UTC)
     elif type(time) == str:
         raise ValueError('Only "now" is an accepted string argument for time')
     elif type(time) == dt:

server.py

@@ -1,5 +1,6 @@
 import os, sys, asyncio, re, signal
-from firepup650 import console
+from platform import uname
+from traceback import format_exc
 from logs import log
 
 
@@ -13,11 +14,15 @@ G.servers = {}
 G.clientsConnected = []
 port = 65048
 G.msgs = []
-G.remoteID = "firepi"
+G.remoteID = uname().node
 G.event = asyncio.Event()
 G.loop = asyncio.get_event_loop()
 G.interruptCount = 0
+G.killList = {}
+G.outboundLinks = []
+G.S2SLogs = []
 saveLogs = True
+address = "0.0.0.0"
 # Try to load a message log, if one exists
 try:
     G.msgs = __import__("cache").msgs
@@ -30,23 +35,53 @@ except Exception:
         level="WARN",
     )
 try:
+    filename = sys.argv.pop(0)  # Ignore the filename
     for arg in sys.argv:
-        if arg.startswith("--port"):
-            port = int(arg.lstrip("-port= "))
-        elif arg.startswith("-p"):
-            port = int(arg.lstrip("-p= "))
-        elif arg in ["-n", "--no-cache"]:
+        if arg.startswith("--port") or arg.startswith("-p"):
+            port = int(arg.lstrip("-port="))
+        elif arg in ["-c", "--no-cache"]:
             log("Explicitly erasing cached messages")
             G.msgs = []
         elif arg in ["-?", "-h", "--help"]:
-            print("TODO: Help menu soon")
+            print(
+                f"""python3 {filename} <args>
+All arguments are optional!
+All areguments are *expected* to only be specified once, if it appears mutliple times, the last one takes priority.
+The exception to the above rule is `--link`, since you could want to link to multiple other servers.
+Accepted arguments:
+-?, -h, --help              - Triggers this help dialog
+-l, --no-logs               - Disables the saving of logs when the server shuts down
+-c, --no-cache              - Disables the loading of cached messages when the server boots
+-p<number>, --port=<number> - Sets the port for the server to use, defaults to `65048`
+--link=<host>:<port>        - Establishes an S2S link with remote server <host> on port <port> when the server starts up
+--hostname=<string>         - Sets the hostname for this server to use when talking to other servers. Defaults to the current system's hostname (limit of 16 chars)
+--address=<IP>              - Sets the IP to listen on, defaults to all addresses (0.0.0.0)
+
+Examples:
+python3 {filename} --hostname=Fun-chat --link=chat.example.com:65048 --port=92628
+python3 {filename} --no-logs --no-cache
+python3 {filename} --address=127.0.0.1 -l -p=7288"""
+            )
             exit(0)
         elif arg in ["-l", "--no-logs"]:
-            log("Disabling saving of logs!")
+            log("Explicitly disabling saving of logs!")
             saveLogs = False
+        elif arg.startswith("--link"):
+            G.outboundLinks.append((arg[7:].split(":")[0], int(arg.split(":")[1])))
+        elif arg.startswith("--hostname"):
+            G.remoteID = arg[11:]
+        elif arg.startswith("--address"):
+            address = arg[9:]
+        else:
+            log(f"Unrecognized argument {arg}!", "WARN")
 except Exception:
     sys.tracebacklimit = 0
-    raise ValueError("Invalid arguments. Please refer to -? for usage.") from None
+    raise ValueError("Invalid arguments. Please refer to --help for usage.") from None
+
+if not saveLogs:
+    G.msgs.append(
+        b"[00-00-0000 00:00:00] Notice: Logging is disabled on this server instance!\n"
+    )
 
 
 def raw(string: str) -> str:
@@ -65,7 +100,7 @@ def fmt(msg: str, name: str = "", action: bool = False) -> str:
         return f"  {name}{' '*(20-len(name))}: {msg}"
 
 
-async def handle_client(reader, writer):
+async def handleClient(reader, writer):
     try:
         global G
         writer.write(b"Please identify yourself. Nick limit is 20 chars.\n")
@@ -87,17 +122,18 @@ async def handle_client(reader, writer):
             writer.close()
             await writer.wait_closed()
             return
-        if name in G.clientsConnected:
+        if name.lower() in G.clientsConnected:
             writer.write(f"Nick ({name}) in use\n".encode("utf8"))
             await writer.drain()
             writer.close()
             await writer.wait_closed()
             return
         if not name.startswith("S2S-"):
-            G.clientsConnected.extend([name])
+            G.clientsConnected.append(name.lower())
             msgIndex = 0
             G.uniqueClients += 1
             G.msgs.extend([log(f"{name} has connected to the server.")])
+            G.S2SLogs.append(("+", name, G.remoteID))
             while 1:
                 try:
                     buffer = await asyncio.wait_for(reader.read(967), 0.1)
@@ -105,58 +141,103 @@ async def handle_client(reader, writer):
                     response = None
                     if request.startswith("/mes "):
                         response = log(f"* {name}'s {request[5:]}")
+                        G.S2SLogs.append(("A", (name + "'s", request[5:]), G.remoteID))
                     elif request.startswith("/me "):
                         response = log(f"* {name} {request[4:]}")
+                        G.S2SLogs.append(("A", (name, request[4:]), G.remoteID))
                     elif request.startswith("/h"):
-                        writer.write(b"TODO: Command listing\n")
+                        writer.write(
+                            b"""Command List:
+/me <action>  - Sends a special message so it looks like you did <action>
+/mes <action> - Same as /me, but adds a 's onto your nick
+/afk [reason] - Optional reason, short hand for `/me is afk [to [reason]]`
+/h, /help     - Triggers this command listing
+/back         - Shorthand for `/me is back`
+/quit         - Disconnects you from the server\n"""
+                        )
                         await writer.drain()
                     elif request.startswith("/quit"):
                         break
                     elif request.startswith("/afk"):
                         if len(request) > 5:
-                            response = log(f"* {name} is afk to {request[4:]}")
+                            response = log(f"* {name} is afk to {request[5:]}")
+                            G.S2SLogs.append(
+                                ("A", (name, f"is afk to {request[5:]}"), G.remoteID)
+                            )
                         else:
                             response = log(f"* {name} is afk")
+                            G.S2SLogs.append(("A", (name, "is afk"), G.remoteID))
                     elif request.startswith("/back"):
                         response = log(f"* {name} is back")
+                        G.S2SLogs.append(("A", (name, "is back"), G.remoteID))
                     elif request:
                         response = log(f"  {name}: {request}")
+                        G.S2SLogs.append(("M", (name, request), G.remoteID))
                     if response:
-                        G.msgs.extend([response])
+                        G.msgs.append(response)
                 except asyncio.TimeoutError:
                     pass
                 if msgIndex < len(G.msgs):
                     writer.writelines(G.msgs[msgIndex:])
                     await writer.drain()
                     msgIndex = len(G.msgs)
-                if name in G.killList and G.killList[name]:
+                if name.lower() in G.killList and G.killList[name.lower()]:
                     writer.write(b"Your client has been killed by the server\n")
-                    G.killList[name] = False
+                    G.killList[name.lower()] = False
                     break
             await writer.drain()
             writer.close()
             await writer.wait_closed()
             G.uniqueClients -= 1
             G.msgs.append(log(f"{name} has disconnected from the server."))
-            G.clientsConnected.remove(name)
+            G.clientsConnected.remove(name.lower())
+            G.S2SLogs.append(("-", name, G.remoteID))
         else:  # This is... probably a server?
             sName = name[4:]  # Trim off the S2S label
-            log(f"Server link! Link from {sName}")
+            if (
+                G.servers.get(sName, False) != False
+            ):  # Have to explicitly check, empty list is False, but does not == False
+                writer.close()
+                await writer.wait_closed()
+                return  # Server is already "linked", drop the connection
+            if G.remoteID == sName:  # Hey! you can't *also* be ***me***!
+                writer.close()
+                await writer.wait_closed()
+                return  # drop "us"
+            G.msgs.append(log(f"{sName} has linked to the network"))
             G.serverLinks += 1
             G.servers[sName] = []
             msgIndex = 0
+            writer.write(b"I am awaiting your client listing.\n")
             while 1:
-                client = raw((await reader.read(967)).decode("utf8"))
+                client = raw((await reader.read(1024)).decode("utf8"))
                 if client == f"END OF CLIENT LISTING FROM {sName}":
                     break
-                if name in G.servers[sName] or name in G.clientsConnected:
+                if (
+                    client.lower() in G.servers[sName]
+                    or client.lower() in G.clientsConnected
+                ):
                     writer.write(b"K Client rejected: Already exists\n")
                     await writer.drain()
-                writer.write(b"I Added client.\n")
+                    continue
+                writer.write(b"I added that client.\n")
                 await writer.drain()
                 G.msgs.append(log(f"{client} has connected from {sName}"))
-                G.servers[sName].append(client)
+                G.servers[sName].append(client.lower())
+                G.S2SLogs.append(("+", client, sName))
+            writer.write(f"{G.remoteID}\n".encode("utf8"))
+            await writer.drain()
+            await reader.read(1024)
+            for client in G.clientsConnected:
+                writer.write(f"{client}\n".encode("utf8"))
+                await writer.drain()
+                resp = raw((await reader.read(1024)).decode("utf8"))
+                if resp.startswith("K"):
+                    G.killList[client.lower()] = True
+            writer.write(f"END OF CLIENT LISTING FROM {G.remoteID}\n".encode("utf8"))
+            await writer.drain()
             G.clientsConnected.extend(G.servers[sName])
+            msgInd = len(G.S2SLogs)
             while 1:
                 try:
                     rawMsg = await asyncio.wait_for(reader.read(967), 0.1)
@@ -165,98 +246,273 @@ async def handle_client(reader, writer):
                         case "S":  # Server notice
                             G.msgs.extend([log(buffer[2:])])
                             writer.write(b"I Mmm... Blueberries\n")
-                            await writer.drain()
                         case "I":
                             pass
                         case "+":
                             cName = buffer[2:]
-                            if cName not in G.clientsConnected:
+                            if cName.lower() not in G.clientsConnected:
                                 G.msgs.append(
                                     log(f"{cName} has connected from {sName}")
                                 )
-                                G.servers[sName].append(cName)
-                                G.clientsConnected.append(cName)
+                                G.servers[sName].append(cName.lower())
+                                G.clientsConnected.append(cName.lower())
+                                G.S2SLogs.append(("+", cName, sName))
                                 writer.write(b"I Mmm... Pineapples\n")
-                                await writer.drain()
                             else:
-                                writer.write(b"K Nick Collision")
-                                await writer.drain()
+                                writer.write(f"K {cName}\n".encode("utf8"))
                         case "-":
                             cName = buffer[2:]
                             G.msgs.append(log(f"{cName} has disconnected from {sName}"))
-                            G.servers[sName].remove(cName)
-                            G.clientsConnected.remove(cName)
+                            G.servers[sName].remove(cName.lower())
+                            G.clientsConnected.remove(cName.lower())
+                            G.S2SLogs.append(("-", cName, sName))
                             writer.write(b"I Mmm... Bananas\n")
-                            await writer.drain()
                         case "M":
                             cName = buffer[2:].split("|", 1)[0]
                             message = buffer[2:].split("|", 1)[1]
                             G.msgs.append(log(f"  {cName}: {message}"))
+                            G.S2SLogs.append(("M", (cName, message), sName))
                             writer.write(
-                                b"I Get these damn heretic ghost clients out of my store so i can buy my cult candles in peace."
+                                b"I Get these damn heretic ghost clients out of my store so i can buy my cult candles in peace.\n"
                             )
-                            await writer.drain()
                         case "A":
                             cName = buffer[2:].split("|", 1)[0]
                             message = buffer[2:].split("|", 1)[1]
                             G.msgs.append(log(f"* {cName} {message}"))
+                            G.S2SLogs.append(("A", (cName, message), sName))
                             writer.write(b"I Mmm... Strawberries\n")
-                            await writer.drain()
                         case "Q":
                             break
                         case "K":
                             cName = buffer[2:]
                             G.killList[cName] = True
                             writer.write(b"I Mmm... Blood\n")
-                            await writer.drain()
                         case _:
                             writer.write(
-                                b"S Your server is doing drugs over here, sending me bullshit messages man - A fellow server\n"
+                                f"S Your server is doing drugs over here, sending me bullshit messages man - {G.remoteID}, A fellow server\n".encode(
+                                    "utf8"
+                                )
                             )
-                            await writer.drain()
+                    await writer.drain()
                 except TimeoutError:
                     pass
-            for cName in G.serverLinks[sName]:
+                while msgInd < len(G.S2SLogs):
+                    type, data, server = G.S2SLogs[msgInd]
+                    # match-case on type
+                    if server != sName:
+                        match type:
+                            case "A":
+                                nick, msg = data
+                                writer.write(f"A {nick}|{msg}\n".encode("utf8"))
+                            case "M":
+                                nick, msg = data
+                                writer.write(f"M {nick}|{msg}\n".encode("utf8"))
+                            case "+":
+                                writer.write(f"+ {data}\n".encode("utf8"))
+                            case "-":
+                                writer.write(f"- {data}\n".encode("utf8"))
+                            case _:
+                                pass
+                    await writer.drain()
+                    msgInd += 1
+            await writer.drain()
+            writer.close()
+            await writer.wait_closed()
+            for cName in G.servers[sName]:
                 G.msgs.append(log(f"{cName}'s server is going down"))
-                G.clientsConnected.remove(cName)
+                G.S2SLogs.append(("-", cName, sName))
+                G.clientsConnected.remove(cName.lower())
             G.serverLinks -= 1
-            G.servers.remove(sName)
+            del G.servers[sName]
             G.msgs.append(log(f"{sName} has de-linked from the network"))
-    except [ConnectionResetError, BrokenPipeError]:
+    except (
+        ConnectionResetError,
+        BrokenPipeError,
+        IndexError,
+    ):  # Don't ask. IndexError needs to be caught here too.
         if not name.startswith("S2S-"):
             G.uniqueClients -= 1
             G.msgs.append(log(f"{name} has disconnected from the server."))
-            G.clientsConnected.remove(name)
+            G.S2SLogs.append(("-", name, G.remoteID))
+            G.clientsConnected.remove(name.lower())
         else:
-            for cName in G.serverLinks[name[4:]]:
+            for cName in G.servers[name[4:]]:
                 G.msgs.append(log(f"{cName}'s server is going down"))
                 try:
-                    G.clientsConnected.remove(cName)
+                    G.clientsConnected.remove(cName.lower())
+                    G.S2SLogs.append(("-", cName, name[4:]))
                 except Exception:  # Crash during connection sequence?
                     pass
             G.serverLinks -= 1
-            G.servers.remove(name[4:])
+            del G.servers[name[4:]]
             G.msgs.append(log(f"{name[4:]} has de-linked from the network"))
 
 
-async def run_server(port):
+async def connectServer(hostname: str, port: int):
     global G
-    server = await asyncio.start_server(handle_client, "0.0.0.0", port)
+    reader, writer = await asyncio.open_connection(hostname, port)
+    await reader.read(1024)
+    writer.write(f"S2S-{G.remoteID}\n".encode("utf8"))
+    await writer.drain()
+    await reader.read(1024)
+    for client in G.clientsConnected:
+        writer.write(f"{client}\n".encode("utf8"))
+        await writer.drain()
+        resp = raw((await reader.read(1024)).decode("utf8"))
+        if resp.startswith("K"):
+            G.killList[client.lower()] = True
+    writer.write(f"END OF CLIENT LISTING FROM {G.remoteID}\n".encode("utf8"))
+    await writer.drain()
+    rID = raw((await reader.read(16)).decode("utf8"))
+    try:
+        await asyncio.wait_for(reader.read(1024), 0.1)
+    except TimeoutError:
+        pass
+    if G.servers.get(rID, False) != False:
+        writer.close()
+        await writer.wait_closed()
+        return
+    if G.remoteID == rID:
+        writer.close()
+        await writer.wait_closed()
+        return
+    G.msgs.append(log(f"{rID} has linked to the network"))
+    G.serverLinks += 1
+    G.servers[rID] = []
+    writer.write(b"I recieved your remote ID, now awaiting client listing\n")
+    await writer.drain()
+    # recieve client list from the other server
+    while 1:
+        client = raw((await reader.read(1024)).decode("utf8"))
+        if client == f"END OF CLIENT LISTING FROM {rID}":
+            break
+        if client.lower() in G.servers[rID] or client.lower() in G.clientsConnected:
+            writer.write(b"K Client rejected: Already exists\n")
+            await writer.drain()
+            continue
+        writer.write(b"I added that client.\n")
+        await writer.drain()
+        G.msgs.append(log(f"{client} has connected from {rID}"))
+        G.servers[rID].append(client.lower())
+    G.clientsConnected.extend(G.servers[rID])
+    msgInd = len(G.S2SLogs)
+    try:
+        while 1:
+            try:
+                rawMsg = await asyncio.wait_for(reader.read(967), 0.1)
+                buffer = raw(rawMsg.decode("utf8"))
+                match buffer[0]:
+                    case "S":
+                        G.msgs.extend([log(buffer[2:])])
+                        writer.write(b"I Mmm... Blueberries\n")
+                    case "I":
+                        pass
+                    case "+":
+                        cName = buffer[2:]
+                        if cName.lower() not in G.clientsConnected:
+                            G.msgs.append(log(f"{cName} has connected from {rID}"))
+                            G.S2SLogs.append(("+", cName, rID))
+                            G.servers[rID].append(cName.lower())
+                            G.clientsConnected.append(cName.lower())
+                            writer.write(b"I Mmm... Pineapples\n")
+                        else:
+                            writer.write(f"K {cName}\n".encode("utf8"))
+                    case "-":
+                        cName = buffer[2:]
+                        G.msgs.append(log(f"{cName} has disconnected from {rID}"))
+                        G.servers[rID].remove(cName.lower())
+                        G.clientsConnected.remove(cName.lower())
+                        G.S2SLogs.append(("-", cName, rID))
+                    case "M":
+                        cName = buffer[2:].split("|", 1)[0]
+                        message = buffer[2:].split("|", 1)[1]
+                        G.msgs.append(log(f"  {cName}: {message}"))
+                        G.S2SLogs.append(("M", (cName, message), rID))
+                        writer.write(
+                            b"I Get these damn heretic ghost clients out of my store so i can buy my cult candles in peace.\n"
+                        )
+                    case "A":
+                        cName = buffer[2:].split("|", 1)[0]
+                        message = buffer[2:].split("|", 1)[1]
+                        G.S2SLogs.append(("A", (cName, message), rID))
+                        G.msgs.append(log(f"* {cName} {message}"))
+                        writer.write(b"I Mmm... Strawberries\n")
+                    case "Q":
+                        break
+                    case "K":
+                        cName = buffer[2:]
+                        G.killList[cName.lower()] = True
+                        writer.write(b"I Mmm... Blood\n")
+                    case _:
+                        writer.write(
+                            f"S Your server is doing drugs over here, sending me bullshit messages man - {G.remoteID}, A fellow server\n".encode(
+                                "utf8"
+                            )
+                        )
+                await writer.drain()
+            except TimeoutError:
+                pass
+            while msgInd < len(G.S2SLogs):
+                type, data, server = G.S2SLogs[msgInd]
+                if server != rID:
+                    match type:
+                        case "A":
+                            nick, msg = data
+                            writer.write(f"A {nick}|{msg}\n".encode("utf8"))
+                        case "M":
+                            nick, msg = data
+                            writer.write(f"M {nick}|{msg}\n".encode("utf8"))
+                        case "+":
+                            writer.write(f"+ {data}\n".encode("utf8"))
+                        case "-":
+                            writer.write(f"- {data}\n".encode("utf8"))
+                        case _:
+                            pass
+                await writer.drain()
+                msgInd += 1
+        await writer.drain()
+        writer.close()
+        await writer.wait_closed()
+        for cName in G.servers[rID]:
+            G.msgs.append(log(f"{cName}'s server is going down"))
+            G.clientsConnected.remove(cName.lower())
+        G.serverLinks -= 1
+        del G.servers[rID]
+        G.msgs.append(log(f"{rID} has de-linked from the network"))
+    except (ConnectionResetError, BrokenPipeError, IndexError):
+        for cName in G.servers[rID]:
+            G.msgs.append(log(f"{cName}'s server is going down"))
+            try:
+                G.clientsConnected.remove(cName.lower())
+            except Exception:
+                pass
+        G.serverLinks -= 1
+        del G.servers[rID]
+        G.msgs.append(log(f"{rID} has de-linked from the network"))
+
+
+async def runServer(address: str, port: int):
+    global G
+    server = await asyncio.start_server(handleClient, address, port)
     log(f"Listening on port {port}...")
     G.msgs.append(log("Server startup"))
+    links = []
+    for hostname, portNum in G.outboundLinks:
+        links.append(connectServer(hostname, portNum))
     crash = False
     try:
-        log("Waiting on the Interrupt Event to be set...")
-        await G.event.wait()
-        log("Interrupt Event has been set, shutting down normally")
+        links.append(G.event.wait())
+        await asyncio.gather(*links)
     except Exception:
         crash = True
-        G.msgs.extend([log("Server crash", level="FATAL")[1:]])
-        log("Shutting down from Exception")
-        # TODO: Add format_exc here
+        G.msgs.append(log("Server crash", "FATAL")[1:])
+        log("Shutting down from Exception", "FATAL")
+        Err = format_exc()
+        for line in Err.split("\n"):
+            log(line, "ERROR")
     finally:
         if not crash:
-            G.msgs.extend([log("Server shutdown")])
+            G.msgs.append(log("Server shutdown"))
         log("Kicking all clients as we go down")
         server.close()
         # server.abort_clients()
@@ -281,4 +537,4 @@ def interruptCatch(s, f):
 
 
 signal.signal(signal.SIGINT, interruptCatch)
-asyncio.run(run_server(port))
+asyncio.run(runServer(address, port))