Temas - Nemo247820

Hola,
les dejo la parte Server.core.packetprocessor que compone en parte la parte server del codigo fuente de sb0t.
La pregunta: que solicitudes envio?

using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using Minecraft.PacketHandlers;
using System.Drawing;
using System.IO;

namespace cb0t-Minecraft-Server
{
partial class ServerCore
{
private void ProcessReceivedPacket(UserObject user, byte id, MinecraftDataPacket packet)
{
byte temp_byte;
ushort temp_int16;
String name, text;
CommandObject cmd;
SharedFileObject fileobj;

if (!user.logged_in && ((id > 2 && id < 112) || id > 112)) // only packet id 2 or 112 is acceptable to those not logged in
{
user.Disconnect();
return;
}

if (id != 250)
{
if (packet.GetByteCount() > 4040)
{
bool should_part = user.logged_in;

user.Disconnect();

if (should_part)
this.OnPart(user);

return;
}
}

if (user.IsFlooding(id, packet.ToByteArray(), (uint)this.time_now))
{
user.Disconnect();
this.OnPart(user);
return;
}

switch (id) // process packet
{
case 2: // login
if (!user.logged_in)
{
user.guid = packet.ReadGuid();
user.files = packet.ReadInt16();
packet.SkipByte();
user.dc_port = packet.ReadInt16();
user.node_ip = packet.ReadIP();
user.node_port = packet.ReadInt16();
user.line = packet.ReadInt32();
user.name = packet.ReadString();
user.version = packet.ReadString();
user.local_ip = packet.ReadIP();
user.external_ip = packet.ReadIP();
temp_byte = packet.ReadByte();
user.browse = (temp_byte >= 3); // 3 = browse 4 = browse+compression old 7 = browse_compression new
user.supports_compression = (temp_byte > 3);
if (user.files == 0) user.browse = false;
user.custom_client = !(user.version.StartsWith("Minecraft 1.") || user.version.StartsWith("Minecraft 2."));
user.current_uploads = packet.ReadByte();
user.max_uploads = packet.ReadByte();
user.current_queued = packet.ReadByte();
user.orgName = user.name;
user.vroom = 0;
user.admin = false;
user.host = false;
user.kiddied = false;

if (packet.Remaining() > 3) // got personal information
{
user.user_age = packet.ReadByte();
user.user_sex = packet.ReadByte();
user.user_country = packet.ReadByte();
user.user_region = packet.ReadString();
}

if (this.OnJoinCheck(user)) // login authorised
{
Stats.UsersJoined++;
this.OnJoin(user);

if (CoreSettings.captcha)
{
if (user.level == 0 && !Captcha.IsTrusted(user.guid))
{
user.SendOutboundPacket(ServerOutboundPackets.AnnoucePacket(StringTemplate.GetString(153)));
CaptchaObj cap = Captcha.Create();

foreach (byte[] b in cap.packets)
user.SendOutboundPacket(b);

user.captcha_answer = cap.answer;
}
else user.has_captched = true;
}
else user.has_captched = true;
}
else // reject
{
user.Disconnect();

if (!user.auto_redirect)
{
Stats.UsersRejected++;
this.OnUserRejected(user);
}
}
}
else // login flood
{
this.OnFlood(user, "login flood");
this.OnPart(user);
Stats.UsersParted++;
Stats.FloodedUsers++;
}
break;

case 4: // update
user.last_update_time = this.time_now;
temp_int16 = packet.ReadInt16();

if (user.files != temp_int16) UserPool.Broadcast(user.vroom, ServerOutboundPackets.UpdatePacket(user));

break;

case 7: // auto password login
if (Passwords.IsAutoPasswordLogin(user, packet.ReadBytes()))
this.OnAdminStatusChanged(user);

break;

case 8: // ping reply
if (packet.ReadString() == "0123456789")
UserPool.BroadcastPingReply(user, cb0t-Minecraft-Server.Helpers.UnixTimeMS());

break;

case 9: // avatar
user.avatar_count++;

if (user.avatar_count > 2)
{
user.avatar_count = 10;
return;
}

user.user_image = packet.ReadBytes();

try
{
Bitmap test_av = new Bitmap(new MemoryStream(user.user_image));
}
catch { user.user_image = null; }

UserPool.Broadcast(user.vroom, ServerOutboundPackets.AvatarPacket(user));

if (this.link_client.IsLinking())
this.link_client.SendOutboundPacket(ServerOutboundPackets.AvatarPacket(user));

break;

case 10: // public text
text = packet.ReadString();
text = text.Replace("", "");

if (!user.has_captched)
{
String cap_str = text;
cap_str = Helpers.StripColors(cap_str);
cap_str = cap_str.Trim();

if (cap_str.Length > 0)
{
user.SendOutboundPacket(ServerOutboundPackets.PublicTextPacket(user.name, cap_str));
int cap;

if (int.TryParse(cap_str, out cap))
{
if (user.captcha_answer == cap)
{
user.has_captched = true;
user.SendOutboundPacket(ServerOutboundPackets.AnnoucePacket(StringTemplate.GetString(154)));
Captcha.MakeTrusted(user.guid);
return;
}
}
}

user.captcha_attempts++;

if (user.captcha_attempts > 2)
{
user.SendOutboundPacket(ServerOutboundPackets.AnnoucePacket(StringTemplate.GetString(151)));
user.Disconnect();
this.OnPart(user);
Stats.UsersParted++;
Stats.KickedUsers++;
return;
}
else
{
user.SendOutboundPacket(ServerOutboundPackets.AnnoucePacket(StringTemplate.GetString(152)));
CaptchaObj cap = Captcha.Create();

foreach (byte[] b in cap.packets)
user.SendOutboundPacket(b);

user.captcha_answer = cap.answer;
return;
}
}

Stats.PublicMessagesReceived++;

if (text.StartsWith("#")) // command text
{
cmd = CommandEval.EvaluateClientCommandString(text.Substring(1));
this.OnCommand(user, cmd.cmdText, cmd.tUser, cmd.args);
}

if (user.IsSet()) text = this.OnTextBefore(user, text); // still connected? (invalid login attempt??)

if (user.IsSet()) // still connected? (word filter??)
if (!String.IsNullOrEmpty(text))
this.OnTextAfter(user, text);

break;

case 11: // emote text
if (!user.has_captched)
return;

text = packet.ReadString();
text = text.Replace("", "");
Stats.EmoteMessagesReceived++;

text = this.OnEmoteBefore(user, text);

if (user.IsSet()) // still connected? (word filter??)
if (!String.IsNullOrEmpty(text))
this.OnEmoteAfter(user, text);

break;

case 13: // personal message
text = packet.ReadString();
text = text.Replace("", "");

while (Encoding.UTF8.GetByteCount(text) > 50)
text = text.Substring(0, text.Length - 1);

if (PMessages.IsAdminMsg(user) != null)
return;

if (user.idle && !text.StartsWith("[idle] "))
text = "[idle] " + text;

user.user_message = text;
UserPool.Broadcast(user.vroom, ServerOutboundPackets.PersonalMessagePacket(user, text));

if (this.link_client.IsLinking())
this.link_client.SendOutboundPacket(ServerOutboundPackets.PersonalMessagePacket(user, text));

break;

case 25: // pm text
if (!user.has_captched)
return;

name = packet.ReadString();
text = packet.ReadString();
text = text.Replace("", "");
Stats.PrivateMessagesReceived++;

if (name == CoreSettings.room_bot)
{
if (text.StartsWith("/") || text.StartsWith("#")) // command via host pm
{
text = text.Substring(1);
cmd = CommandEval.EvaluateClientCommandString(text);
this.OnCommand(user, cmd.cmdText, cmd.tUser, cmd.args);
}
else
{
this.OnHostPM(user, text);
}

return;
}

/* if (name == this.last_pm_spam) // pm spammer
{
if (user.level < 5)
{
this.banstats.Add(user.name + " [" + user.physical_ip + "] was banned for being a pm spammer");
AdminLog.WriteLine(user.name + " was banned for being a pm spammer");
Bans.AddBan(user);
user.Disconnect();
this.OnPart(user);
Stats.UsersParted++;
Stats.BannedUsers++;
return;
}
}*/

this.OnPM(user, name, text);
break;

case 45: // ignore request
temp_byte = packet.ReadByte();
name = packet.ReadString();
this.OnIgnoreRequested(user, name, temp_byte);
break;

case 50: // add share
user.file_count++;

if (user.file_count > 12000) // too many files
{
this.OnFlood(user, "file share limit exceeded");
this.OnPart(user);
Stats.UsersParted++;
return;
}

fileobj = FileBrowseHelpers.CreateFileObject(packet);

if (fileobj != null)
{
user.AddFile(fileobj);
this.OnFileReceived(user, fileobj);
}

break;

case 80:
byte[] _unzipped = null;

try
{
_unzipped = ZLib.Zlib.Decompress(packet.ReadBytes(), false);
}
catch { user.file_count++; }

if (_unzipped != null)
{
MinecraftDataPacket _unzipped_files = new MinecraftDataPacket(_unzipped);

while (_unzipped_files.Remaining() > 3)
{
temp_int16 = _unzipped_files.ReadInt16();

if (_unzipped_files.ReadByte() != 50)
{
user.file_count++;
break; // i'm only interested in add shares
}

byte[] _file_data = _unzipped_files.ReadBytes(temp_int16);

user.file_count++;

if (user.file_count > 12000) // too many files
{
this.OnFlood(user, "file share limit exceeded");
this.OnPart(user);
Stats.UsersParted++;
return;
}

fileobj = FileBrowseHelpers.CreateFileObject(new MinecraftDataPacket(_file_data));

if (fileobj != null)
{
user.AddFile(fileobj);
this.OnFileReceived(user, fileobj);
}
}
}

break;

case 51: // rem share
break;

case 52: // browse request
FileBrowseHelpers.ProcessBrowseRequest(this.link_client, user, packet);
break;

case 60: // room search request
FileBrowseHelpers.ProcessSearchRequest(user, packet);
break;

case 64: // client uses proxy server
if (!user.admin)
{
this.tor.Update(user.physical_ip);
AdminLog.ReportProxy(user);
Bans.AddBan(user);
user.Disconnect();
this.OnPart(user);
Stats.UsersParted++;
Stats.KickedUsers++;
}

break;

case 70: // request supernodes
byte[] s_nodes = UserPool.GetSuperNodes();
if (s_nodes == null) break;
user.SendOutboundPacket(ServerOutboundPackets.SuperNodesPacket(s_nodes));
break;

case 74: // command text
if (!user.has_captched)
return;

text = packet.ReadString();
text = text.Replace("", "");
cmd = CommandEval.EvaluateClientCommandString(text);
this.OnCommand(user, cmd.cmdText, cmd.tUser, cmd.args);
break;

case 82: // command login
text = packet.ReadString();
this.OnCommand(user, "login " + text, null, String.Empty);
break;

case 112: // we are server - client requests link login
if (this.link_client.IsSet() || !CoreSettings.allow_linking) // already linked
{
user.SendOutboundPacket(ServerOutboundPackets.LinkErrorPacket((byte)LinkClient.LinkError.LinkingDisabled));
user.Disconnect();
return;
}

this.link_client = new LinkClient(user.socket, this.time_now);
user.UserWasLinkLeaf();
packet.SkipBytes(2);
temp_int16 = packet.ReadInt16();
ushort _tempint162 = packet.ReadInt16();
this.link_client.target_port = _tempint162;
this.link_client.room_name = packet.ReadString();
user = new UserObject();
user.physical_ip = this.link_client.target_ip;

if (!CoreSettings.link_any)
{
Minecraft.CommonObjects.ChannelListItem _c = new Minecraft.CommonObjects.ChannelListItem();
_c.port = this.link_client.target_port;
_c.externalIp = this.link_client.target_ip;
_c.name = this.link_client.room_name;

if (!LinkAllowList.CanAcceptLink(_c)) // not on allow list
{
this.link_client.SendOutboundPacket(ServerOutboundPackets.LinkErrorPacket((byte)LinkClient.LinkError.NotOnAllowList));
this.link_client.SendAndDisconnect();
return;
}
}

if (Bans.IsLinkBanned(user) || RangeBans.IsBanned(user)) // banned user
{
this.link_client.SendOutboundPacket(ServerOutboundPackets.LinkErrorPacket((byte)LinkClient.LinkError.BannedUser));
this.link_client.SendAndDisconnect();
return;
}

UserPool.Broadcast(ServerOutboundPackets.AnnoucePacket("\x000314room link: " + this.link_client.room_name + " requesting room link..."));

if (temp_int16 < 3041) // proto out of date
{
UserPool.Broadcast(ServerOutboundPackets.AnnoucePacket("\x000314room link: rejected [invalid link protocol]"));
this.link_client.SendOutboundPacket(ServerOutboundPackets.LinkErrorPacket((byte)LinkClient.LinkError.OldProtocol));
this.link_client.SendAndDisconnect();
return;
}

if (AutoLogin.IsHost(this.link_client.target_ip) && _tempint162 == CoreSettings.room_port) // linking yourself
{
UserPool.Broadcast(ServerOutboundPackets.AnnoucePacket("\x000314room link: rejected [self linking]"));
this.link_client.SendOutboundPacket(ServerOutboundPackets.LinkErrorPacket((byte)LinkClient.LinkError.LinkToSelf));
this.link_client.SendAndDisconnect();
return;
}

UserPool.Broadcast(ServerOutboundPackets.AnnoucePacket("\x000314room link: accepted link request from " + this.link_client.room_name + " (Y)"));
this.link_client.SendOutboundPacket(ServerOutboundPackets.RequestLinkAckPacket());

foreach (UserObject usr in UserPool.Users)
if (usr.IsSet())
if (usr.logged_in)
if (usr.vroom == 0)
this.link_client.SendOutboundPacket(ServerOutboundPackets.UserListItemPacket(usr, true));

this.link_client.SendOutboundPacket(ServerOutboundPackets.UserListEndPacket());
this.link_client.logged_in = true;
this.link_client.SetRoomInfo();

foreach (UserObject usr in UserPool.Users)
{
if (usr.IsSet())
{
if (usr.logged_in)
{
if (usr.vroom == 0)
{
this.link_client.SendOutboundPacket(ServerOutboundPackets.AvatarPacket(usr));
this.link_client.SendOutboundPacket(ServerOutboundPackets.PersonalMessagePacket(usr, usr.user_message));
}
}
}
}

AdminLog.WriteLine(this.link_client.room_name + " has requested and been accepted to link");
break;

case 200: // custom data
text = packet.ReadString();
name = packet.ReadString();
UserObject tUser = UserPool.GetUserByName(name);

if (tUser != null)
{
tUser.SendOutboundPacket(ServerOutboundPackets.CustomDataPacket(user, text, packet.ReadBytes()));
}

break;

case 201: // custom data to all
text = packet.ReadString();
UserPool.BroadcastCustomData(user, ServerOutboundPackets.CustomDataPacket(user, text, packet.ReadBytes()));
break;

case 250:
ushort adf_len = packet.ReadInt16();
byte adf_id = packet.ReadByte();
byte[] adf_data = packet.ReadBytes();

if (adf_data.Length == adf_len)
this.ProcessAdvancedFeaturesPacket(user, adf_id, new MinecraftDataPacket(adf_data));

break;
}
}

private void ProcessAdvancedFeaturesPacket(UserObject user, byte id, MinecraftDataPacket packet)
{
switch (id)
{
case 202: // add tag
this.ProcessCustomDataAddTags(user, packet);
break;

case 203: // remove tag
this.ProcessCustomDataRemTags(user, packet);
break;

case 204: // font
if (packet.Remaining() == 2)
{
user.font = new UserFont("Verdana", 10);
UserPool.Broadcast(user.vroom, ServerOutboundPackets.Font(user));
user.font = null;
}
else
{
int _f_size = (int)packet.ReadByte();
String _f_name = packet.ReadString();
user.font = new UserFont(_f_name, _f_size);

if (packet.Remaining() >= 2)
{
user.font.ncol = packet.ReadByte();
user.font.tcol = packet.ReadByte();
}

UserPool.Broadcast(user.vroom, ServerOutboundPackets.Font(user));
}
break;

case 205:
user.voice_chat = packet.ReadByte() == 1;
user.voice_private_chat = packet.ReadByte() == 1;
UserPool.Broadcast(user.vroom, ServerOutboundPackets.VoiceChatUserSupport(user));
break;

case 206:
this.ProcessVCFirst(user, packet);
break;

case 207:
this.ProcessVCFirstTo(user, packet);
break;

case 208:
this.ProcessVCChunk(user, packet);
break;

case 209:
this.ProcessVCChunkTo(user, packet);
break;

case 210:
this.ProcessVCIgnore(user, packet);
break;

case 220: // supports custom emotes
this.ProcessSupportsCustomEmotes(user);
break;

case 221: // custom emote item
this.ProcessCustomEmoteUpload(user, packet);
break;

case 222: // delete custom emote
this.ProcessCustomEmoteDelete(user, packet);
break;
}
}

private void ProcessSupportsCustomEmotes(UserObject userobj)
{
if (!CoreSettings.supports_custom_emoticons)
return;

if (!userobj.supports_custom_emotes)
{
userobj.supports_custom_emotes = true;
userobj.custom_emotes.Clear();
UserPool.SendCustomEmotes(userobj);
}
}

private void ProcessCustomEmoteUpload(UserObject userobj, MinecraftDataPacket packet)
{
if (!CoreSettings.supports_custom_emoticons)
return;

ProcessSupportsCustomEmotes(userobj);

CustomEmoteItem c = new CustomEmoteItem();
c.Shortcut = packet.ReadString();
c.Size = packet.ReadByte();
c.Image = packet.ReadBytes();
UserPool.BroadcastToVroomCustomEmotes(userobj.vroom, ServerOutboundPackets.CustomEmoteItem(userobj, c));
userobj.custom_emotes.Add(c);

if (userobj.custom_emotes.Count > 16)
{
userobj.Disconnect();
this.OnPart(userobj);
}
}

private void ProcessCustomEmoteDelete(UserObject userobj, MinecraftDataPacket packet)
{
if (!CoreSettings.supports_custom_emoticons)
return;

String text = packet.ReadString();
userobj.custom_emotes.RemoveAll(delegate(CustomEmoteItem x) { return x.Shortcut == text; });
UserPool.BroadcastToVroomCustomEmotes(userobj.vroom, ServerOutboundPackets.CustomEmoteDelete(userobj, text));
}

private void ProcessCustomDataAddTags(UserObject userobj, MinecraftDataPacket packet)
{
while (packet.Remaining() > 0)
userobj.custom_tags.Add(packet.ReadString());
}

private void ProcessCustomDataRemTags(UserObject userobj, MinecraftDataPacket packet)
{
while (packet.Remaining() > 0)
userobj.custom_tags.RemoveAll(x => x == packet.ReadString());
}

private void ProcessVCFirst(UserObject userobj, MinecraftDataPacket packet)
{
if (CoreSettings.can_vc)
{
byte[] buffer = ServerOutboundPackets.VoiceChatFirst(userobj.name, packet.ReadBytes());
UserPool.BroadcastVoiceClip(userobj, buffer);
}
}

private void ProcessVCFirstTo(UserObject userobj, MinecraftDataPacket packet)
{
if (CoreSettings.can_vc)
{
String target_name = packet.ReadString();
byte[] buffer = ServerOutboundPackets.VoiceChatFirstTo(userobj.name, packet.ReadBytes());
UserObject target_obj = UserPool.GetUserByName(target_name);

if (target_obj != null)
if (!target_obj.voice_chat_ignores.Contains(userobj.name))
if (target_obj.voice_private_chat)
target_obj.SendOutboundPacket(buffer);
else userobj.SendOutboundPacket(ServerOutboundPackets.VoiceChatNoPrivate(target_name));
else userobj.SendOutboundPacket(ServerOutboundPackets.VoiceChatIgnored(target_name));
else userobj.SendOutboundPacket(ServerOutboundPackets.PMOfflinePacket(target_name));
}
}

private void ProcessVCChunk(UserObject userobj, MinecraftDataPacket packet)
{
if (CoreSettings.can_vc)
{
byte[] buffer = ServerOutboundPackets.VoiceChatChunk(userobj.name, packet.ReadBytes());
UserPool.BroadcastVoiceClip(userobj, buffer);
}
}

private void ProcessVCChunkTo(UserObject userobj, MinecraftDataPacket packet)
{
if (CoreSettings.can_vc)
{
String target_name = packet.ReadString();
byte[] buffer = ServerOutboundPackets.VoiceChatChunkTo(userobj.name, packet.ReadBytes());
UserObject target_obj = UserPool.GetUserByName(target_name);

if (target_obj != null)
if (target_obj.voice_private_chat)
if (!target_obj.voice_chat_ignores.Contains(userobj.name))
target_obj.SendOutboundPacket(buffer);
}
}

private void ProcessVCIgnore(UserObject userobj, MinecraftDataPacket packet)
{
if (CoreSettings.can_vc)

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