[3.3.5a] Implementing new console commands

[Natrist]

Hello,

I am writing here in hope to find someone to help me out with implementing new console commands.

Basically, I am working on a World of Warcraft emulator with a group of friends and I am assigned to the GM systems (auto-reply on accept whispers off, GM Satisfaction Surveys system, etc.) but it doesn't stop there; I am also coding the existing debug console commands.

So far I have 'worldpor't, 'charmport', and 'logout' commands implemented and working as they should. Port is on its way as soon as I find out just exactly what it does.
However, I want more: I want to be able to use all commands real developers and GMs use by unlocking them if possible (00407870 InstallGameConsoleCommands ([WoW][3.3.5.12340] Info Dump Thread)) or else register my own commands with the same name, help messages, and functions as any command I can find.

For those of you who do not know what the console does, I have taken the following screenshots from the World of Warcraft alpha:





I have been told that this could be done by DLL injection, but I have no knowledge on the matter and any help would be greatly appreciated.
I would also like to know what 'InstallGameConsoleCommands' and 'ClientRegisterConsoleCommands' do.

EDIT:
I am decent in C++ but however don't know much about reverse-engineering even though I have Ollydbg installed and know about as much as how to attach it to a running process.
A video of my current implementations of the console commands will be posted shortly.

Feel free to contact me on Skype (tristan.cormier) with any pertinent information you may have.
Thank you for reading and have a nice day!



Kind Regards,

Tristan 'Natrist' Cormier
C++ Programmer
CorsairCore

[TOM_RUS]

Paste2 - Viewing Paste 3246609

I played a bit with adding console commands in the past (wow 4.x). Above is C# code I used.

[Natrist]

Thank you very much for this little but quite helpful paste, but I have a perhaps newbie question; how do I use this code?
I haven't worked on client edits yet and I am truly clueless about DLLs as well. I'll try to play around and see if I can get anything to work in the mean time.

Also, how would I make the command send a client opcode to the server?
I would like to code my commands server-side, as I want them to do something and not just display a line in the console.

By the way, do you know if 'InstallGameConsoleCommands' could actually make all console commands accessible -- including the hidden debug, game, and gm ones?

[TOM_RUS]

By the way, do you know if 'InstallGameConsoleCommands' could actually make all console commands accessible -- including the hidden debug, game, and gm ones?

There's no hidden console commands in retail client.

[Natrist]

Oh, OK. I thought there was some way to unlock them but I guess they use a different client for that.
How do I make the console command send an opcode anyway? Is that possible?

[l0l1dk]

Oh, OK. I thought there was some way to unlock them but I guess they use a different client for that.
How do I make the console command send an opcode anyway? Is that possible?

You'd have to call the functions to send a packet from the console command callback you've registered, and then handle those packets in the server. Packets can be sent by with the CDataStore functions and ClientServices::Send2. Here's my packet class (it's C++). Maybe it'll help.

[Natrist]

Alright, I will try this out and let you know how it goes.
It would have been nice if someone could have written a template for me to use over and over again since I plan on implementing at least 15 commands.

[Jadd]

Alright, I will try this out and let you know how it goes.
It would have been nice if someone could have written a template for me to use over and over again since I plan on implementing at least 15 commands.

You're in the wrong forum if you want to be spoonfed. RTFM.

[culino2]

Yes you can add your own opcodes in the emu/client.
The first 4 bytes are standing for the opcode if you use send2.

You didn't mentioned that you use your own core in the 3.3.5 info dump thread (i thought you want to 'crack' some existing servers)

It's really simple to realize, just learn the basics.

[Robske]

If you take a look at how the client creates and sends packets it shouldn't really take you that long to figure out. It's quite straight forward.

It's as simple as creating a data store and pointing it to your packet buffer, then passing the data store to the appropriate send method.

If you're in control of the server, you can have any packet structure you desire

[TOM_RUS]

I hope this will answer all questions.

00769100 ConsoleCommandRegister
BOOL ConsoleCommandRegister(char  const* command, int (*)(char  const*, char  const*) callback, CATEGORY category, char  const* help);

007689E0 ConsoleCommandUnregister
ConsoleCommandUnregister(char  const* command)

enum CommandCategory
{
  CATEGORY_Debug = 0x0,
  CATEGORY_Graphics = 0x1,
  CATEGORY_Console = 0x2,
  CATEGORY_Combat = 0x3,
  CATEGORY_Game = 0x4,
  CATEGORY_Default = 0x5,
  CATEGORY_Net = 0x6,
  CATEGORY_Sound = 0x7,
  CATEGORY_Gm = 0x8,
};

struct CDataStore
{
  void *vTable;
  unsigned __int8 *m_buffer;
  unsigned int m_base;
  unsigned int m_alloc;
  unsigned int m_size;
  unsigned int m_read;
};

void __cdecl GameClientCommands::Install()
{
  ConsoleCommandRegister("port", CCommand_Teleport, CATEGORY_Debug, 0);
  ConsoleCommandRegister("charmport", CCommand_CharmTeleport, CATEGORY_Debug, 0);
  ConsoleCommandRegister("worldport", CCommand_WorldTeleport, CATEGORY_Debug, 0);
  ConsoleCommandRegister("setrawpos", CCommand_SetRawPos, CATEGORY_Debug, 0);
  ConsoleCommandRegister("showplayer", CCommand_TogglePlayer, CATEGORY_Graphics, 0);
  ConsoleCommandRegister("togglehelm", CCommand_ToggleHelm, CATEGORY_Game, 0);
  ConsoleCommandRegister("togglecloak", CCommand_ToggleCloak, CATEGORY_Game, 0);
}

void __cdecl GameClientCommands::Uninstall()
{
  ConsoleCommandUnregister("port");
  ConsoleCommandUnregister("charmport");
  ConsoleCommandUnregister("worldport");
  ConsoleCommandUnregister("setrawpos");
  ConsoleCommandUnregister("showplayer");
  ConsoleCommandUnregister("togglehelm");
  ConsoleCommandUnregister("togglecloak");
}

int __cdecl CCommand_WorldTeleport(char *cmd, char *args)
{
  double v2; // st7@0
  WGUID guid; // qax@1
  void *pPlayer; // ebx@1
  WorldSafeLocsRec *v5; // edi@1
  int result; // eax@2
  DWORD map; // esi@6
  C3Vector *v8; // eax@6
  float v9; // ecx@6
  float v10; // edx@6
  float v11; // eax@6
  int v12; // eax@15
  int v13; // esi@15
  int v14; // ebx@16
  char *area; // ecx@24
  int ticks; // ebx@29
  QWORD v17; // ST10_8@29
  int v18; // [sp+4h] [bp-88h]@1
  char v19[64]; // [sp+10h] [bp-7Ch]@4
  CDataStore data; // [sp+50h] [bp-3Ch]@29
  C3Vector v21; // [sp+68h] [bp-24h]@6
  float x; // [sp+74h] [bp-18h]@6
  float y; // [sp+78h] [bp-14h]@6
  float z; // [sp+7Ch] [bp-10h]@6
  char v25[4]; // [sp+80h] [bp-Ch]@1
  float v26; // [sp+88h] [bp-4h]@1

  strcpy(v25, "\t\r\n\" ");
  guid = ClntObjMgrGetActivePlayerGuid();
  pPlayer = ClntObjMgrObjectPtr(guid, TYPEMASK_PLAYER, ".../Player_C.h", 160);
  v5 = 0;
  LODWORD(v26) = pPlayer;
  if ( !pPlayer )
    return 1;
  if ( IsNumeric(*args) )
  {
    SStrTokenize(&args, v19, 64, v25, 0);
    if ( !v19[0] )
    {
      ConsoleWrite("Usage: worldport <continentID> [x y z] [facing]", 4);
      return 0;
    }
    map = SStrToUnsigned(v19);
    v8 = (*(*pPlayer + 44))(pPlayer, &v21, v18); // pPlayer->GetPosition(&pos);
    v9 = v8->X;
    v10 = v8->Y;
    v11 = v8->Z;
    x = v9;
    y = v10;
    z = v11;
    SStrTokenize(&args, v19, 64, v25, 0);
    if ( v19[0] )
    {
      v2 = SStrToFloat(v19);
      x = v2;
    }
    SStrTokenize(&args, v19, 64, v25, 0);
    if ( v19[0] )
    {
      v2 = SStrToFloat(v19);
      y = v2;
    }
    SStrTokenize(&args, v19, 64, v25, 0);
    if ( v19[0] )
    {
      v2 = SStrToFloat(v19);
      z = v2;
    }
    SStrTokenize(&args, v19, 64, v25, 0);
    if ( v19[0] )
      v2 = SStrToFloat(v19) * 0.017453292;
    else
      (*(*pPlayer + 52))(pPlayer); // o = pPlayer->GetOrientation();
  }
  else
  {
    v12 = g_WorldSafeLocsDB.numRows;
    v13 = 0;
    if ( g_WorldSafeLocsDB.numRows <= 0 )
    {
LABEL_23:
      ConsolePrintf("Could not find location: %s", args);
      return 1;
    }
    v14 = 0;
    while ( 1 )
    {
      if ( v13 >= v5 && v13 < v12 )
        v5 = &g_WorldSafeLocsDB.FirstRow[v14];
      if ( sub_76F770(v5->m_AreaName_lang, args) )// compare string
        break;
      v12 = g_WorldSafeLocsDB.numRows;
      ++v13;
      v14 += 6;
      if ( v13 >= g_WorldSafeLocsDB.numRows )
        goto LABEL_23;
      v5 = 0;
    }
    area = v5->m_AreaName_lang;
    map = v5->m_continent;
    x = v5->m_locX;
    y = v5->m_locY;
    v2 = v5->m_locZ;
    z = v5->m_locZ;
    ConsolePrintf("Porting to %s", area);
    (*(*LODWORD(v26) + 52))(v18); // o = pPlayer->GetOrientation();
    v5 = 0;
  }
  v26 = v2;
  if ( map >= g_MapDB.minIndex && map <= g_MapDB.maxIndex && g_MapDB.Rows[map - g_MapDB.minIndex] != v5 )
  {
    ticks = PerformanceCounter();
    CDataStore::GenPacket(&data);
    CDataStore::PutInt32(&data, CMSG_WORLD_TELEPORT);
    CDataStore::PutInt32(&data, ticks);
    CDataStore::PutInt32(&data, map);
    HIDWORD(v17) = v5; // v5 is 0 ?
    LODWORD(v17) = v5; // v5 is 0 ?
    CDataStore::PutInt64(&data, v17);           // may be player guid?
    CDataStore::PutFloat(&data, x);
    CDataStore::PutFloat(&data, y);
    CDataStore::PutFloat(&data, z);
    CDataStore::PutFloat(&data, v26);           // o
    data.m_read = v5; // v5 is 0 ?
    ClientServices::SendPacket(&data);
    CDataStore::Release(&data);
    result = 1;
  }
  else
  {
    ConsoleWriteA("Bad world number: %i\n", 3, map);
    result = 0;
  }
  return result;
}

signed int __cdecl CCommand_SetRawPos(char *cmd, char *args)
{
  WGUID guid; // qax@1
  CGPlayer_C *pPlayer; // esi@1
  double v4; // st7@8
  double v5; // st7@10
  char v7[64]; // [sp+8h] [bp-7Ch]@5
  CDataStore data; // [sp+48h] [bp-3Ch]@16
  C3Vector v9; // [sp+60h] [bp-24h]@10
  C3Vector pos; // [sp+6Ch] [bp-18h]@1
  char v11[4]; // [sp+78h] [bp-Ch]@1
  float o; // [sp+80h] [bp-4h]@16

  pos.X = 0.0;
  pos.Y = 0.0;
  pos.Z = 0.0;
  strcpy(v11, "\t\r\n\" ,");
  guid = ClntObjMgrGetActivePlayerGuid();
  pPlayer = ClntObjMgrObjectPtr(guid, TYPEMASK_PLAYER, ".../Player_C.h", 160);
  if ( !pPlayer )
    return 1;
  if ( !*args || !IsNumeric(*args) && *args != '-' )
  {
    ConsoleWrite("Usage: setrawpos [x y z] [facing]", 4);
    return 0;
  }
  SStrTokenize(&args, v7, 64, v11, 0);
  if ( !v7[0] || (pos.X = SStrToFloat(v7), SStrTokenize(&args, v7, 64, v11, 0), !v7[0]) )
    return 0;
  pos.Y = SStrToFloat(v7);
  SStrTokenize(&args, v7, 64, v11, 0);
  if ( v7[0] )
    v4 = SStrToFloat(v7);
  else
    v4 = 0.0;
  pos.Z = v4;
  CMovement::GetPosition(pPlayer->UnitBase.movementInfo, &v9, &pos);
  v5 = 0.0;
  if ( !World::IsValidPosition(&v9, 0.0) )
  {
    ConsoleWrite("Coordinates out of range\n", 0);
    return 1;
  }
  SStrTokenize(&args, v7, 64, v11, 0);
  if ( v7[0] )
    v5 = SStrToFloat(v7) * 0.017453292;
  else
    (*(pPlayer->UnitBase.ObjectBase.vtable + 14))(pPlayer);
  o = v5;
  CDataStore::GenPacket(&data);
  CDataStore::PutInt32(&data, CMSG_MOVE_SET_RAW_POSITION);
  CDataStore::PutVector3(&data, &pos);
  CDataStore::PutFloat(&data, o);
  data.m_read = 0;
  ClientServices::SendPacket(&data);
  CDataStore::Release(&data);
  return 1;
}

int __cdecl CCommand_ToggleHelm(char *cmd, char *args)
{
  WGUID guid; // qax@1
  CGPlayer_C *pPlayer; // esi@1
  CDataStore data; // [sp+8h] [bp-18h]@2

  guid = ClntObjMgrGetActivePlayerGuid();
  pPlayer = ClntObjMgrObjectPtr(guid, TYPEMASK_PLAYER, ".../Player_C.h", 160);
  if ( pPlayer )
  {
    CDataStore::GenPacket(&data);
    CDataStore::PutInt32(&data, CMSG_SHOWING_HELM);
    CDataStore::PutInt8(&data, (pPlayer->PlayerData->PLAYER_FLAGS >> 10) & 1);
    data.m_read = 0;
    ClientServices::SendPacket(&data);
    CDataStore::Release(&data);
  }
  return 1;
}

int __cdecl CCommand_ToggleCloak(char *cmd, char *args)
{
  WGUID guid; // qax@1
  CGPlayer_C *pPlayer; // esi@1
  CDataStore data; // [sp+8h] [bp-18h]@2

  guid = ClntObjMgrGetActivePlayerGuid();
  pPlayer = ClntObjMgrObjectPtr(guid, TYPEMASK_PLAYER, ".../Player_C.h", 160);
  if ( pPlayer )
  {
    CDataStore::GenPacket(&data);
    CDataStore::PutInt32(&data, CMSG_SHOWING_CLOAK);
    CDataStore::PutInt8(&data, (pPlayer->PlayerData->PLAYER_FLAGS >> 11) & 1);
    data.m_read = 0;
    ClientServices::SendPacket(&data);
    CDataStore::Release(&data);
  }
  return 1;
}

[Natrist]

Thank you very much for all the information provided. I'll try to fly on my own wings now.