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/*
* Copyright (C) 2005-2008 MaNGOS <http://www.mangosproject.org/>
*
* Copyright (C) 2008 Trinity <http://www.trinitycore.org/>
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "AddonHandler.h"
#include "Database/DatabaseEnv.h"
#include "Opcodes.h"
#include "Log.h"
#include "Policies/SingletonImp.h"
#include "zlib/zlib.h"
INSTANTIATE_SINGLETON_1( AddonHandler );
AddonHandler::AddonHandler()
{
}
AddonHandler::~AddonHandler()
{
}
bool AddonHandler::BuildAddonPacket(WorldPacket *Source, WorldPacket *Target)
{
ByteBuffer AddOnPacked;
uLongf AddonRealSize;
uint32 CurrentPosition;
uint32 TempValue;
unsigned char tdata[256] =
{
0xC3, 0x5B, 0x50, 0x84, 0xB9, 0x3E, 0x32, 0x42, 0x8C, 0xD0, 0xC7, 0x48, 0xFA, 0x0E, 0x5D, 0x54,
0x5A, 0xA3, 0x0E, 0x14, 0xBA, 0x9E, 0x0D, 0xB9, 0x5D, 0x8B, 0xEE, 0xB6, 0x84, 0x93, 0x45, 0x75,
0xFF, 0x31, 0xFE, 0x2F, 0x64, 0x3F, 0x3D, 0x6D, 0x07, 0xD9, 0x44, 0x9B, 0x40, 0x85, 0x59, 0x34,
0x4E, 0x10, 0xE1, 0xE7, 0x43, 0x69, 0xEF, 0x7C, 0x16, 0xFC, 0xB4, 0xED, 0x1B, 0x95, 0x28, 0xA8,
0x23, 0x76, 0x51, 0x31, 0x57, 0x30, 0x2B, 0x79, 0x08, 0x50, 0x10, 0x1C, 0x4A, 0x1A, 0x2C, 0xC8,
0x8B, 0x8F, 0x05, 0x2D, 0x22, 0x3D, 0xDB, 0x5A, 0x24, 0x7A, 0x0F, 0x13, 0x50, 0x37, 0x8F, 0x5A,
0xCC, 0x9E, 0x04, 0x44, 0x0E, 0x87, 0x01, 0xD4, 0xA3, 0x15, 0x94, 0x16, 0x34, 0xC6, 0xC2, 0xC3,
0xFB, 0x49, 0xFE, 0xE1, 0xF9, 0xDA, 0x8C, 0x50, 0x3C, 0xBE, 0x2C, 0xBB, 0x57, 0xED, 0x46, 0xB9,
0xAD, 0x8B, 0xC6, 0xDF, 0x0E, 0xD6, 0x0F, 0xBE, 0x80, 0xB3, 0x8B, 0x1E, 0x77, 0xCF, 0xAD, 0x22,
0xCF, 0xB7, 0x4B, 0xCF, 0xFB, 0xF0, 0x6B, 0x11, 0x45, 0x2D, 0x7A, 0x81, 0x18, 0xF2, 0x92, 0x7E,
0x98, 0x56, 0x5D, 0x5E, 0x69, 0x72, 0x0A, 0x0D, 0x03, 0x0A, 0x85, 0xA2, 0x85, 0x9C, 0xCB, 0xFB,
0x56, 0x6E, 0x8F, 0x44, 0xBB, 0x8F, 0x02, 0x22, 0x68, 0x63, 0x97, 0xBC, 0x85, 0xBA, 0xA8, 0xF7,
0xB5, 0x40, 0x68, 0x3C, 0x77, 0x86, 0x6F, 0x4B, 0xD7, 0x88, 0xCA, 0x8A, 0xD7, 0xCE, 0x36, 0xF0,
0x45, 0x6E, 0xD5, 0x64, 0x79, 0x0F, 0x17, 0xFC, 0x64, 0xDD, 0x10, 0x6F, 0xF3, 0xF5, 0xE0, 0xA6,
0xC3, 0xFB, 0x1B, 0x8C, 0x29, 0xEF, 0x8E, 0xE5, 0x34, 0xCB, 0xD1, 0x2A, 0xCE, 0x79, 0xC3, 0x9A,
0x0D, 0x36, 0xEA, 0x01, 0xE0, 0xAA, 0x91, 0x20, 0x54, 0xF0, 0x72, 0xD8, 0x1E, 0xC7, 0x89, 0xD2
};
// broken addon packet, can't be received from real client
if (Source->rpos() + 4 > Source->size())
return false;
*Source >> TempValue; // get real size of the packed structure
// empty addon packet, nothing process, can't be received from real client
if(!TempValue)
return false;
AddonRealSize = TempValue; // temp value because ZLIB only excepts uLongf
CurrentPosition = Source->rpos(); // get the position of the pointer in the structure
AddOnPacked.resize(AddonRealSize); // resize target for zlib action
if (!uncompress(const_cast<uint8*>(AddOnPacked.contents()), &AddonRealSize, const_cast<uint8*>((*Source).contents() + CurrentPosition), (*Source).size() - CurrentPosition)!= Z_OK)
{
Target->Initialize(SMSG_ADDON_INFO);
uint32 addonsCount;
AddOnPacked >> addonsCount; // addons count?
for(uint32 i = 0; i < addonsCount; ++i)
{
std::string addonName;
uint8 enabled;
uint32 crc, unk2;
// check next addon data format correctness
if(AddOnPacked.rpos()+1 > AddOnPacked.size())
return false;
AddOnPacked >> addonName;
// recheck next addon data format correctness
if(AddOnPacked.rpos()+1+4+4 > AddOnPacked.size())
return false;
AddOnPacked >> enabled >> crc >> unk2;
sLog.outDebug("ADDON: Name: %s, Enabled: 0x%x, CRC: 0x%x, Unknown2: 0x%x", addonName.c_str(), enabled, crc, unk2);
uint8 state = (enabled ? 2 : 1);
*Target << uint8(state);
uint8 unk1 = (enabled ? 1 : 0);
*Target << uint8(unk1);
if (unk1)
{
uint8 unk2 = (crc != 0x4c1c776d); // If addon is Standard addon CRC
*Target << uint8(unk2);
if (unk2)
Target->append(tdata, sizeof(tdata));
*Target << uint32(0);
}
uint8 unk3 = (enabled ? 0 : 1);
*Target << uint8(unk3);
if (unk3)
{
// String, 256 (null terminated?)
*Target << uint8(0);
}
}
uint32 unk4;
AddOnPacked >> unk4;
uint32 count = 0;
*Target << uint32(count);
/*for(uint32 i = 0; i < count; ++i)
{
uint32
string (16 bytes)
string (16 bytes)
uint32
}*/
if(AddOnPacked.rpos() != AddOnPacked.size())
sLog.outDebug("packet under read!");
}
else
{
sLog.outError("Addon packet uncompress error :(");
return false;
}
return true;
}
/* Code use in 1.10.2 when client not ignore ban state sended for addons. Saved for reference if client switch to use server ban state information
void AddonHandler::BuildAddonPacket(WorldPacket* Source, WorldPacket* Target, uint32 Packetoffset)
{
ByteBuffer AddOnPacked;
uLongf AddonRealSize;
uint32 CurrentPosition;
uint32 TempValue;
*Source >> TempValue; //get real size of the packed structure
AddonRealSize = TempValue; //temp value becouse ZLIB only excepts uLongf
CurrentPosition = Source->rpos(); //get the position of the pointer in the structure
AddOnPacked.resize(AddonRealSize); //resize target for zlib action
if (!uncompress((uint8*)AddOnPacked.contents(), &AddonRealSize, (uint8*)(*Source).contents() + CurrentPosition, (*Source).size() - CurrentPosition)!= Z_OK)
{
bool* AddonAllowed = new bool; //handle addon check and enable-ing
uint32 Unknown1;
uint8 Unknown0;
AddOnPacked >> Unknown0;
AddOnPacked >> Unknown1;
Target->Initialize(SMSG_ADDON_INFO);
uint32 i = 5; //offset for addon extraction
while(i != AddOnPacked.size())
{
std::string AddonNames;
AddOns* Addonstr = new AddOns;
uint8 unk6;
uint64 CRCCHECK;
AddOnPacked >> AddonNames >> CRCCHECK >> unk6;
//sLog.outDebug("ADDON: Name:%s CRC:%x Unknown:%x",AddonNames.c_str(), CRCCHECK,unk6);
Addonstr->Name = AddonNames;
Addonstr->CRC = CRCCHECK;
//if not allowed but unknown added to list
if (GetAddonStatus(Addonstr, AddonAllowed)) // If addon is new
{
Addonstr->Enabled = m_Addon_Default; // by default new addons are set from Config file
*AddonAllowed = m_Addon_Default; // Set addon allowed on default value
_AddAddon(Addonstr);
sLog.outDetail("Found new Addon, Name:%s CRC:%x Unknown:%x",AddonNames.c_str(), CRCCHECK, unk6);
}
if (CRCCHECK == 0x4C1C776D01LL) //If addon is Standard addon CRC
{
//value's standard Addons
*Target << uint8(0) << uint8(2) << uint8(1) << uint8(0) << uint32(0);
}
else if (*AddonAllowed) //if addon is Custom addons
//value's enable addon
*Target << uint8(0x00) << uint8(0x01) << uint8(0x00) << uint8(0x01);
else
//value's disable addom
*Target << uint8(0x00) << uint8(0x0) << uint8(0x00) << uint8(0x0);
i += AddonNames.size() + 10;
}
*Target << uint8(0x0);
//delete mem allocation
delete AddonAllowed;
}
else
{
//handle uncompress error
}
}
*/
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