ChannelHandler.cpp

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/*
 * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
 *
 * 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 2 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/>.
 */
 
#include "WorldSession.h"
#include "Channel.h"
#include "ChannelMgr.h"
#include "ChannelPackets.h"
#include "DB2Stores.h"
#include "Log.h"
#include "ObjectMgr.h" // for normalizePlayerName
#include "Player.h"
#include <cctype>
 
static size_t const MAX_CHANNEL_NAME_STR = 31;
static size_t const MAX_CHANNEL_PASS_STR = 127;
 
void WorldSession::HandleJoinChannel(WorldPackets::Channel::JoinChannel& packet)
{
 TC_LOG_DEBUG("chat.system", "CMSG_JOIN_CHANNEL {} ChatChannelId: {}, CreateVoiceSession: {}, Internal: {}, ChannelName: {}, Password: {}",
 GetPlayerInfo(), packet.ChatChannelId, packet.CreateVoiceSession, packet.Internal, packet.ChannelName, packet.Password);
 
 AreaTableEntry const* zone = sAreaTableStore.LookupEntry(GetPlayer()->GetZoneId());
 if (packet.ChatChannelId)
 {
 ChatChannelsEntry const* channel = sChatChannelsStore.LookupEntry(packet.ChatChannelId);
 if (!channel)
 return;
 
 if (!zone || !GetPlayer()->CanJoinConstantChannelInZone(channel, zone))
 return;
 }
 
 ChannelMgr* cMgr = ChannelMgr::ForTeam(GetPlayer()->GetTeam());
 if (!cMgr)
 return;
 
 if (packet.ChatChannelId)
 { // system channel
 if (Channel* channel = cMgr->GetSystemChannel(packet.ChatChannelId, zone))
 channel->JoinChannel(GetPlayer());
 }
 else
 { // custom channel
 if (packet.ChannelName.empty() || isdigit((unsigned char)packet.ChannelName[0]))
 {
 WorldPackets::Channel::ChannelNotify channelNotify;
 channelNotify.Type = CHAT_INVALID_NAME_NOTICE;
 channelNotify._Channel = packet.ChannelName;
 SendPacket(channelNotify.Write());
 return;
 }
 
 if (utf8length(packet.ChannelName) > MAX_CHANNEL_NAME_STR)
 {
 WorldPackets::Channel::ChannelNotify channelNotify;
 channelNotify.Type = CHAT_INVALID_NAME_NOTICE;
 channelNotify._Channel = packet.ChannelName;
 SendPacket(channelNotify.Write());
 TC_LOG_ERROR("network", "Player {} tried to create a channel with a name more than {} characters long - blocked", GetPlayer()->GetGUID().ToString(), MAX_CHANNEL_NAME_STR);
 return;
 }
 
 if (packet.Password.length() > MAX_CHANNEL_PASS_STR)
 {
 TC_LOG_ERROR("network", "Player {} tried to create a channel with a password more than {} characters long - blocked", GetPlayer()->GetGUID().ToString(), MAX_CHANNEL_PASS_STR);
 return;
 }
 
 if (!DisallowHyperlinksAndMaybeKick(packet.ChannelName))
 return;
 
 if (Channel* channel = cMgr->GetCustomChannel(packet.ChannelName))
 channel->JoinChannel(GetPlayer(), packet.Password);
 else if (Channel* channel = cMgr->CreateCustomChannel(packet.ChannelName))
 {
 channel->SetPassword(packet.Password);
 channel->JoinChannel(GetPlayer(), packet.Password);
 }
 }
}
 
void WorldSession::HandleLeaveChannel(WorldPackets::Channel::LeaveChannel& packet)
{
 TC_LOG_DEBUG("chat.system", "CMSG_LEAVE_CHANNEL {} ChannelName: {}, ZoneChannelID: {}",
 GetPlayerInfo(), packet.ChannelName, packet.ZoneChannelID);
 
 if (packet.ChannelName.empty() && !packet.ZoneChannelID)
 return;
 
 AreaTableEntry const* zone = sAreaTableStore.LookupEntry(GetPlayer()->GetZoneId());
 if (packet.ZoneChannelID)
 {
 ChatChannelsEntry const* channel = sChatChannelsStore.LookupEntry(packet.ZoneChannelID);
 if (!channel)
 return;
 
 if (!zone || !GetPlayer()->CanJoinConstantChannelInZone(channel, zone))
 return;
 }
 
 if (ChannelMgr* cMgr = ChannelMgr::ForTeam(GetPlayer()->GetTeam()))
 {
 if (Channel* channel = cMgr->GetChannel(packet.ZoneChannelID, packet.ChannelName, GetPlayer(), true, zone))
 channel->LeaveChannel(GetPlayer(), true);
 
 if (packet.ZoneChannelID)
 cMgr->LeftChannel(packet.ZoneChannelID, zone);
 }
}
 
void WorldSession::HandleChannelCommand(WorldPackets::Channel::ChannelCommand& packet)
{
 TC_LOG_DEBUG("chat.system", "{} {} ChannelName: {}",
 GetOpcodeNameForLogging(packet.GetOpcode()), GetPlayerInfo(), packet.ChannelName);
 
 if (Channel* channel = ChannelMgr::GetChannelForPlayerByNamePart(packet.ChannelName, GetPlayer()))
 {
 switch (packet.GetOpcode())
 {
 case CMSG_CHAT_CHANNEL_ANNOUNCEMENTS:
 channel->Announce(GetPlayer());
 break;
 case CMSG_CHAT_CHANNEL_DECLINE_INVITE:
 channel->DeclineInvite(GetPlayer());
 break;
 case CMSG_CHAT_CHANNEL_DISPLAY_LIST:
 case CMSG_CHAT_CHANNEL_LIST:
 channel->List(GetPlayer());
 break;
 case CMSG_CHAT_CHANNEL_OWNER:
 channel->SendWhoOwner(GetPlayer());
 break;
 default:
 break;
 }
 }
}
 
void WorldSession::HandleChannelPlayerCommand(WorldPackets::Channel::ChannelPlayerCommand& packet)
{
 if (packet.Name.length() >= MAX_CHANNEL_NAME_STR)
 {
 TC_LOG_DEBUG("chat.system", "{} {} ChannelName: {}, Name: {}, Name too long.",
 GetOpcodeNameForLogging(packet.GetOpcode()), GetPlayerInfo(), packet.ChannelName, packet.Name);
 return;
 }
 
 TC_LOG_DEBUG("chat.system", "{} {} ChannelName: {}, Name: {}",
 GetOpcodeNameForLogging(packet.GetOpcode()), GetPlayerInfo(), packet.ChannelName, packet.Name);
 
 if (!normalizePlayerName(packet.Name))
 return;
 
 if (Channel* channel = ChannelMgr::GetChannelForPlayerByNamePart(packet.ChannelName, GetPlayer()))
 {
 switch (packet.GetOpcode())
 {
 case CMSG_CHAT_CHANNEL_BAN:
 channel->Ban(GetPlayer(), packet.Name);
 break;
 case CMSG_CHAT_CHANNEL_INVITE:
 channel->Invite(GetPlayer(), packet.Name);
 break;
 case CMSG_CHAT_CHANNEL_KICK:
 channel->Kick(GetPlayer(), packet.Name);
 break;
 case CMSG_CHAT_CHANNEL_MODERATOR:
 channel->SetModerator(GetPlayer(), packet.Name);
 break;
 case CMSG_CHAT_CHANNEL_SET_OWNER:
 channel->SetOwner(GetPlayer(), packet.Name);
 break;
 case CMSG_CHAT_CHANNEL_SILENCE_ALL:
 channel->SilenceAll(GetPlayer(), packet.Name);
 break;
 case CMSG_CHAT_CHANNEL_UNBAN:
 channel->UnBan(GetPlayer(), packet.Name);
 break;
 case CMSG_CHAT_CHANNEL_UNMODERATOR:
 channel->UnsetModerator(GetPlayer(), packet.Name);
 break;
 case CMSG_CHAT_CHANNEL_UNSILENCE_ALL:
 channel->UnsilenceAll(GetPlayer(), packet.Name);
 break;
 default:
 break;
 }
 }
}
 
void WorldSession::HandleChannelPassword(WorldPackets::Channel::ChannelPassword& packet)
{
 if (packet.Password.length() > MAX_CHANNEL_PASS_STR)
 {
 TC_LOG_DEBUG("chat.system", "{} {} ChannelName: {}, Password: {}, Password too long.",
 GetOpcodeNameForLogging(packet.GetOpcode()), GetPlayerInfo(), packet.ChannelName, packet.Password);
 return;
 }
 
 TC_LOG_DEBUG("chat.system", "{} {} ChannelName: {}, Password: {}",
 GetOpcodeNameForLogging(packet.GetOpcode()), GetPlayerInfo(), packet.ChannelName, packet.Password);
 
 if (Channel* channel = ChannelMgr::GetChannelForPlayerByNamePart(packet.ChannelName, GetPlayer()))
 channel->Password(GetPlayer(), packet.Password);
}