public void ApplyHook(MemberInfo member)
{
HookAttribute[] hooks = HookInfo.GetHookAttributes(member);
foreach (var hook in hooks)
{
var info = new HookInfo(member, hook);
Logger.Log("appling {3} hook: {0:X}, {1}, {2:X}", hook.Address, member.Name, hook.Size, hook.Type);
try
{
CheckHookRace(info);
int key = hook.Address;
HookTransferStation station = null;
// use old station if exist
if (transferStations.ContainsKey(key))
{
station = transferStations[key];
if (station.Match(hook.Type))
{
Logger.Log("insert hook to key '{0:X}'", key);
station.SetHook(info);
}
else if (station.HookInfos.Count <= 0)
{
Logger.LogWarning("remove key '{0:X}' because of hook type mismatch. ", key);
transferStations.Remove(key);
station = null;
}
else
{
throw new InvalidOperationException("hook type mismatch.");
}
}
// create new station
if (station == null)
{
Logger.Log("add key '{0:X}'", key);
switch (hook.Type)
{
case HookType.AresHook:
station = new AresHookTransferStation(info);
break;
case HookType.SimpleJumpToRet:
case HookType.DirectJumpToHook:
station = new JumpHookTransferStation(info);
break;
case HookType.WriteBytesHook:
station = new WriteBytesHookTransferStation(info);
break;
default:
Logger.LogError("found unkwnow hook: " + member.Name);
return;
}
transferStations.Add(key, station);
}
ASMWriter.FlushInstructionCache(hook.Address, Math.Max(hook.Size, ASM.Jmp.Length));
maxHookSize = Math.Max(hook.Size, maxHookSize);
}
catch (Exception e)
{
Logger.LogError("hook applied error!");
Logger.PrintException(e);
}
}
}