src/game/AddonHandler.cpp

   1 /*
   2  * Copyright (C) 2005,2006 MaNGOS <http://www.mangosproject.org/>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19 #include "AddonHandler.h"
  20 #include "Database/DatabaseEnv.h"
  21 #include "Opcodes.h"
  22 #include "Log.h"
  23 #include "Policies/SingletonImp.h"
  24 #include "zlib/zlib.h"
  25
  26 INSTANTIATE_SINGLETON_1( AddonHandler );
  27
  28 AddonHandler::AddonHandler()
  29 {
  30 }
  31
  32 AddonHandler::~AddonHandler()
  33 {
  34 }
  35
  36 void AddonHandler::BuildAddonPacket(WorldPacket *Source, WorldPacket *Target, uint32 Packetoffset)
  37 {
  38     ByteBuffer AddOnPacked;
  39     uLongf AddonRealSize;
  40     uint32 CurrentPosition;
  41     uint32 TempValue;
  42
  43     unsigned char tdata[257] =
  44     {
  45         0x01, 0xC3, 0x5B, 0x50, 0x84, 0xB9, 0x3E, 0x32, 0x42, 0x8C, 0xD0, 0xC7, 0x48, 0xFA, 0x0E, 0x5D,
  46         0x54, 0x5A, 0xA3, 0x0E, 0x14, 0xBA, 0x9E, 0x0D, 0xB9, 0x5D, 0x8B, 0xEE, 0xB6, 0x84, 0x93, 0x45,
  47         0x75, 0xFF, 0x31, 0xFE, 0x2F, 0x64, 0x3F, 0x3D, 0x6D, 0x07, 0xD9, 0x44, 0x9B, 0x40, 0x85, 0x59,
  48         0x34, 0x4E, 0x10, 0xE1, 0xE7, 0x43, 0x69, 0xEF, 0x7C, 0x16, 0xFC, 0xB4, 0xED, 0x1B, 0x95, 0x28,
  49         0xA8, 0x23, 0x76, 0x51, 0x31, 0x57, 0x30, 0x2B, 0x79, 0x08, 0x50, 0x10, 0x1C, 0x4A, 0x1A, 0x2C,
  50         0xC8, 0x8B, 0x8F, 0x05, 0x2D, 0x22, 0x3D, 0xDB, 0x5A, 0x24, 0x7A, 0x0F, 0x13, 0x50, 0x37, 0x8F,
  51         0x5A, 0xCC, 0x9E, 0x04, 0x44, 0x0E, 0x87, 0x01, 0xD4, 0xA3, 0x15, 0x94, 0x16, 0x34, 0xC6, 0xC2,
  52         0xC3, 0xFB, 0x49, 0xFE, 0xE1, 0xF9, 0xDA, 0x8C, 0x50, 0x3C, 0xBE, 0x2C, 0xBB, 0x57, 0xED, 0x46,
  53         0xB9, 0xAD, 0x8B, 0xC6, 0xDF, 0x0E, 0xD6, 0x0F, 0xBE, 0x80, 0xB3, 0x8B, 0x1E, 0x77, 0xCF, 0xAD,
  54         0x22, 0xCF, 0xB7, 0x4B, 0xCF, 0xFB, 0xF0, 0x6B, 0x11, 0x45, 0x2D, 0x7A, 0x81, 0x18, 0xF2, 0x92,
  55         0x7E, 0x98, 0x56, 0x5D, 0x5E, 0x69, 0x72, 0x0A, 0x0D, 0x03, 0x0A, 0x85, 0xA2, 0x85, 0x9C, 0xCB,
  56         0xFB, 0x56, 0x6E, 0x8F, 0x44, 0xBB, 0x8F, 0x02, 0x22, 0x68, 0x63, 0x97, 0xBC, 0x85, 0xBA, 0xA8,
  57         0xF7, 0xB5, 0x40, 0x68, 0x3C, 0x77, 0x86, 0x6F, 0x4B, 0xD7, 0x88, 0xCA, 0x8A, 0xD7, 0xCE, 0x36,
  58         0xF0, 0x45, 0x6E, 0xD5, 0x64, 0x79, 0x0F, 0x17, 0xFC, 0x64, 0xDD, 0x10, 0x6F, 0xF3, 0xF5, 0xE0,
  59         0xA6, 0xC3, 0xFB, 0x1B, 0x8C, 0x29, 0xEF, 0x8E, 0xE5, 0x34, 0xCB, 0xD1, 0x2A, 0xCE, 0x79, 0xC3,
  60         0x9A, 0x0D, 0x36, 0xEA, 0x01, 0xE0, 0xAA, 0x91, 0x20, 0x54, 0xF0, 0x72, 0xD8, 0x1E, 0xC7, 0x89,
  61         0xD2
  62     };
  63
  64     *Source >> TempValue;                                   //get real size of the packed structure
  65
  66     // empty addon packet, nothing proccess, can't be recieve from real client
  67     if(!TempValue)
  68         return;
  69
  70     AddonRealSize = TempValue;                              //temp value becouse ZLIB only excepts uLongf
  71
  72     CurrentPosition = Source->rpos();                       //get the position of the pointer in the structure
  73
  74     AddOnPacked.resize(AddonRealSize);                      //resize target for zlib action
  75
  76     if (!uncompress((uint8*)AddOnPacked.contents(), &AddonRealSize, (uint8*)(*Source).contents() + CurrentPosition, (*Source).size() - CurrentPosition)!= Z_OK)
  77     {
  78         Target->Initialize(SMSG_ADDON_INFO);
  79
  80         uint32 i = 0;                                       //offset for addon extraction
  81         while(i != AddOnPacked.size())
  82         {
  83             std::string AddonNames;
  84             uint8 unk6;
  85             uint32 crc, unk7;
  86             AddOnPacked >> AddonNames >> crc >> unk7 >> unk6;
  87
  88             sLog.outDebug("ADDON: Name:%s CRC:%x Unknown1 :%x Unknown2 :%x", AddonNames.c_str(), crc, unk7, unk6);
  89
  90             if (crc == 0x1c776d01LL)                        //If addon is Standard addon CRC
  91                 *Target << (uint8)2 << (uint8)1 << (uint32)0 << (uint16)0;
  92             else                                            //if client hasn't this addon
  93             {
  94                 *Target << (uint8)2 << (uint8)1;
  95                 Target->append(tdata, sizeof(tdata));
  96                 *Target << (uint32)0 << (uint8)0;
  97             }
  98             i += AddonNames.size() + 10;
  99         }
 100     }
 101     else
 102     {
 103         sLog.outDebug("Addon packet uncompress error :(");
 104     }
 105 }
 106
 107 /* 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
 108 void AddonHandler::BuildAddonPacket(WorldPacket* Source, WorldPacket* Target, uint32 Packetoffset)
 109 {
 110     ByteBuffer AddOnPacked;
 111     uLongf AddonRealSize;
 112     uint32 CurrentPosition;
 113     uint32 TempValue;
 114
 115     *Source >> TempValue;                                   //get real size of the packed structure
 116
 117     AddonRealSize = TempValue;                              //temp value becouse ZLIB only excepts uLongf
 118
 119     CurrentPosition = Source->rpos();                       //get the position of the pointer in the structure
 120
 121     AddOnPacked.resize(AddonRealSize);                      //resize target for zlib action
 122
 123     if (!uncompress((uint8*)AddOnPacked.contents(), &AddonRealSize, (uint8*)(*Source).contents() + CurrentPosition, (*Source).size() - CurrentPosition)!= Z_OK)
 124     {
 125         bool* AddonAllowed = new bool;                      //handle addon check and enable-ing
 126
 127         uint32 Unknown1;
 128         uint8 Unknown0;
 129
 130         AddOnPacked >> Unknown0;
 131         AddOnPacked >> Unknown1;
 132
 133         Target->Initialize(SMSG_ADDON_INFO);
 134
 135         uint32 i = 5;                                       //offset for addon extraction
 136         while(i != AddOnPacked.size())
 137         {
 138             std::string AddonNames;
 139             AddOns* Addonstr = new AddOns;
 140             uint8 unk6;
 141             uint64 CRCCHECK;
 142             AddOnPacked >> AddonNames >> CRCCHECK >> unk6;
 143
 144             //sLog.outDebug("ADDON:    Name:%s CRC:%x Unknown:%x",AddonNames.c_str(), CRCCHECK,unk6);
 145
 146             Addonstr->Name = AddonNames;
 147             Addonstr->CRC = CRCCHECK;
 148
 149             //if not allowed but unknown added to list
 150             if (GetAddonStatus(Addonstr, AddonAllowed))     // If addon is new
 151             {
 152                 Addonstr->Enabled = m_Addon_Default;        // by default new addons are set from Config file
 153                 *AddonAllowed = m_Addon_Default;            // Set addon allowed on default value
 154                 _AddAddon(Addonstr);
 155                 sLog.outDetail("Found new Addon, Name:%s CRC:%x Unknown:%x",AddonNames.c_str(), CRCCHECK, unk6);
 156             }
 157
 158             if (CRCCHECK == 0x4C1C776D01LL)                 //If addon is Standard addon CRC
 159             {
 160                                                             //value's standard Addons
 161                 *Target << uint8(0) << uint8(2) << uint8(1) << uint8(0) << uint32(0);
 162             }
 163             else if (*AddonAllowed)                         //if addon is Custom addons
 164                                                             //value's enable addon
 165                 *Target << uint8(0x00) << uint8(0x01) << uint8(0x00) << uint8(0x01);
 166             else
 167                                                             //value's disable addom
 168                 *Target << uint8(0x00) << uint8(0x0) << uint8(0x00) << uint8(0x0);
 169
 170             i += AddonNames.size() + 10;
 171         }
 172         *Target << uint8(0x0);
 173
 174         //delete mem allocation
 175         delete AddonAllowed;
 176     }
 177     else
 178     {
 179         //handle uncompress error
 180     }
 181 }
 182 */