[C#][Copy/Pasta] Out of process DBC reading

[Apoc]

        [MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_EFFECT_INDEX, ArraySubType = UnmanagedType.I4)]
        public int[] EffectBaseDice;
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_EFFECT_INDEX, ArraySubType = UnmanagedType.R4)]
        public float[] EffectDicePerLevel;

were removed in 3.3.3 patch, but you commented out

        //[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_EFFECT_INDEX, ArraySubType = UnmanagedType.I4)]
        //public int[] EffectMiscValue;
        //[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_EFFECT_INDEX, ArraySubType = UnmanagedType.I4)]
        //public int[] EffectMiscValueB;

for some reason...

As I said; I didn't really research what was actually removed.

Thanks for the correction though.

[Tanaris4]

Would I be correct in assuming that Flag96 is simply uint[3]?

Got this idea from: src/shared/Util.h | Assembla

Hadn't seen this type before. Thanks!

[Apoc]

Yes, it's a flag with 96 bits. (AKA: 3x integers)

[Tanaris4]

@Apoc - thx

For those that care, the Struct did NOT change in 3.3.3a for OS X, not really sure why but ran some tests for around an hour. Here it is:
tanaris4 private pastebin - collaborative debugging tool

I'll do a formal write up on the OS X implementation later for those that are curious.

Edit: For those reading this thread, this will aid in determining the flags for things like Mechanic, SchoolMask, etc...

http://trinitycore.googlecode.com/hg...a4bf9b85b81438

[Nesox]

shouldn't this

public class DbTable
{
    private readonly IntPtr _tablePtr;
    private WoWClientDb _nativeDb;

     internal DbTable(IntPtr tablePtr)
         {
         _tablePtr = tablePtr;
                 _nativeDb = Memory.ReadStruct<WoWClientDb>(_tablePtr);
         }
}

be like this?

public class DbTable
{
         private readonly IntPtr _tablePtr;
         private WoWClientDb _nativeDb;

         internal DbTable(IntPtr tablePtr)
         {
                 _tablePtr = tablePtr;
                 _nativeDb = Memory.ReadStruct<WoWClientDb>(_tablePtr - 0x18);
         }
}

[Apoc]

shouldn't this

public class DbTable
{
private readonly IntPtr _tablePtr;
private WoWClientDb _nativeDb;

internal DbTable(IntPtr tablePtr)
{
_tablePtr = tablePtr;
_nativeDb = Memory.ReadStruct<WoWClientDb>(_tablePtr);
}
}

be like this?

public class DbTable
{
private readonly IntPtr _tablePtr;
private WoWClientDb _nativeDb;

internal DbTable(IntPtr tablePtr)
{
_tablePtr = tablePtr;
_nativeDb = Memory.ReadStruct<WoWClientDb>(_tablePtr - 0x1;
}
}

No. Re-read the code. Only packed DBCs require the -0x18 address. All others should stay the way they are.

[Nesox]

No. Re-read the code. Only packed DBCs require the -0x18 address. All others should stay the way they are.

Ok, im pretty sure i couldn't get it working tho without changing that tho.

[Tanaris4]

I don't use the -0x18 on my mac, but I've only tested Spell.dbc for packed databases, not sure which others are. Still confused by it, but my read works now yay!

[Tanaris4]

So sad item names aren't stored in there (or am I missing something?)

Looks like you get them through DBItemCache_GetInfoBlockByID amirite?

[MaiN]

So sad item names aren't stored in there (or am I missing something?)

Looks like you get them through DBItemCache_GetInfoBlockByID amirite?

Yes, item names aren't stored in there. They're provided by the server IIRC.

[Apoc]

Yes, item names aren't stored in there. They're provided by the server IIRC.

Errr....

        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
        public struct ItemInfo
        {
            /// int
            public int EntryLength;

            /// int
            public int ClassId;

            /// int
            public int SubClassId;

            /// int
            public int Unk0;

            /// int
            public int DisplayInfoId;

            /// int
            public int Rarity;

            /// int
            public int TypeFlags;

            /// int
            public int BuyPrice;

            /// int
            public int Faction;

            /// int
            public int SellPrice;

            /// int
            public int EquipSlot;

            /// int
            public int AllowedClasses;

            /// int
            public int AllowedRaces;

            /// int
            public int ItemLevel;

            /// int
            public int RequiredLevel;

            /// int
            public int RequiredSkill;

            /// int
            public int RequiredSkillLevel;

            /// int
            public int RequireSpell;

            /// int
            public int RequiredHonorRank;

            /// int
            public int RequiredCityRank;

            /// int
            public int RequiredReputationFaction;

            /// int
            public int RequiredReputationRank;

            /// int
            public int UniqueCount;

            /// int
            public int MaxStackSize;

            /// int
            public int BagSlots;

            /// int
            public int NumberOfStats;

            /// int[10]
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 10, ArraySubType = UnmanagedType.I4)]
            public int[] StatId;

            /// int[10]
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 10, ArraySubType = UnmanagedType.I4)]
            public int[] StatValue;

            /// int[2]
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2, ArraySubType = UnmanagedType.I4)]
            public int[] Unk1;

            /// float[2]
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2, ArraySubType = UnmanagedType.R4)]
            public float[] DamageMin;

            /// float[2]
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2, ArraySubType = UnmanagedType.R4)]
            public float[] DamageMax;

            /// int[2]
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2, ArraySubType = UnmanagedType.I4)]
            public int[] DamageType;

            /// int
            public int ResistPhysical_Armor;

            /// int
            public int ResistHoly;

            /// int
            public int ResistFire;

            /// int
            public int ResistNature;

            /// int
            public int ResistFrost;

            /// int
            public int ResistShadow;

            /// int
            public int ResistArcane;

            /// int
            public int WeaponDelay;

            /// int
            public int AmmoType;

            /// float
            public float RangeModifier;

            /// int[5]
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 5, ArraySubType = UnmanagedType.I4)]
            public int[] SpellId;

            /// int[5]
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 5, ArraySubType = UnmanagedType.I4)]
            public int[] SpellTriggerId;

            /// int[5]
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 5, ArraySubType = UnmanagedType.I4)]
            public int[] SpellCharges;

            /// int[5]
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 5, ArraySubType = UnmanagedType.I4)]
            public int[] SpellCooldown;

            /// int[5]
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 5, ArraySubType = UnmanagedType.I4)]
            public int[] SpellCategory;

            /// int[5]
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 5, ArraySubType = UnmanagedType.I4)]
            public int[] SpellCategoryCooldown;

            /// int
            public int BondId;

            /// char*
            [MarshalAs(UnmanagedType.LPStr)]
            public string Description;

            /// int
            public int BookTextId;

            /// int
            public int BookPages;

            /// int
            public int BookStationaryId;

            /// int
            public int BeginQuestId;

            /// int
            public int LockPickSkillRequired;

            /// int
            public int MaterialId;

            /// int
            public int SheathId;

            /// int
            public int RandomPropertyId;

            /// int
            public int RandomPropertyId2;

            /// int
            public int BlockValue;

            /// int
            public int ItemSetId;

            /// int
            public int DurabilityValue;

            /// int
            public int ItemAreaId;

            /// int
            public int ItemMapId;

            /// int
            public int BagFamily;

            /// int
            public int totemCategory;

            /// int[3]
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 3, ArraySubType = UnmanagedType.I4)]
            public int[] SocketColor;

            /// int[3]
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 3, ArraySubType = UnmanagedType.I4)]
            public int[] SocketUnk;

            /// int
            public int SocketBonus;

            /// int
            public int GemProperties;

            /// int
            public int DisenchantSkillLevel;

            /// float
            public float ArmorDamageModifier;

            /// int
            public int ItemExtendedCost;

            /// int
            public int ItemLimitId;

            /// int
            public int Unk2;

            /// char*
            [MarshalAs(UnmanagedType.LPStr)]
            public string Name;
        }

The cache stores the name... you just need to 'request' it from the server, or have seen the item already (so it's in your cache already).

If that's what you meant by 'the server has to send it' then I retract my response!

[MaiN]

Errr....

-snip-

The cache stores the name... you just need to 'request' it from the server, or have seen the item already (so it's in your cache already).

If that's what you meant by 'the server has to send it' then I retract my response!

Oh yeah, you're right. I was confusing it with the actual entry in the Item.dbc. In that entry it doesn't have the name, and strangely, the entry in Spell.dbc does (which is why I could remember it).

[counted]

Well i have the DBC reader working to get spell names, but I have to force the clientdbunpack routine.

I updated:

CLIENT_DB_REGISTER_BASE = 0x0066A970;

and I had to add

public T GetField<T>(uint index) where T : struct

I got compile error T can not be nullable.

I loaded up 3.3.0 (CLIENT_DB_REGISTER_BASE = 0x005C8E80 Binary)
into IDA and could not find any references to WOW_USE_SPELL_UNPACK = 0xC775D0.

Any hints how to figure out what the 3.3.3a version of WOW_USE_SPELL_UNPACK is?

If anybody has question on how to get this far, let me know.

thanks,

[Apoc]

Check the ClientDb__GetLocalizedRow func. It's the first 'call' to another func.

One simply does a memcpy, the other does the unpacking.

You really need to read the thread.

signed int __thiscall ClientDb_GetLocalizedRow(WoWClientDB *this, int recId, PVOID lpBuffer)
{
  int v3; // edx@1
  LPVOID *v4; // eax@3
  signed int result; // eax@5

  v3 = this->minIndex;
  if ( recId >= v3 && recId <= this->maxIndex && (v4 = (LPVOID *)&this->Rows[recId - v3], *v4) )
  {
    if ( byte_BB9808 )                          // Unpack DBC files, or just memcpy them
    {
      ClientDb__Unpack(*v4, 0x2A8u, lpBuffer);
      result = 1;
    }
    else
    {
      memcpy(lpBuffer, *v4, 0x2A8u);
      result = 1;
    }
  }
  else
  {
    result = 0;
  }
  return result;
}

[csin]

I do not like visual basic

Oh @#$^ someone send an S.O.S this Failboat is taking on water!!!