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Fixed some issues with getting the user messages when mod was compiled with frame pointer.

Browse Source 
Added support for Dystopia through an ugly hack until more information known.
Code has been further uglified.

--HG--
extra : convert_revision : svn%3Ac2935e3e-5518-0410-8daf-afa5dab7d4e3/trunk%40343
This commit is contained in:
Scott Ehlert 2007-02-27 03:25:36 +00:00
parent 293308200f
commit fa82870f01
2 changed files with 40 additions and 9 deletions
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48
sourcemm/CSmmAPI.cpp
View File

@ -513,16 +513,25 @@ int CSmmAPI::GetGameDLLVersion()
// message indices. This is our answer to it. Yuck! <:-( //
//////////////////////////////////////////////////////////////////////
#ifdef OS_WIN32
#define MSGCLASS_SIGLEN 7
#define MSGCLASS_SIG "\x8B\x0D\x2A\x2A\x2A\x2A\x56"
#define MSGCLASS_OFFS 2
#define MSGCLASS_SIGLEN 7
#define MSGCLASS_SIG "\x8B\x0D\x2A\x2A\x2A\x2A\x56"
#define MSGCLASS_OFFS 2
#define MSGCLASS2_SIGLEN 16
#define MSGCLASS2_SIG "\x56\x8B\x74\x24\x2A\x85\xF6\x7C\x2A\x3B\x35\x2A\x2A\x2A\x2A\x7D"
#define MSGCLASS2_OFFS 11
#elif defined OS_LINUX
#define MSGCLASS_SIGLEN 14
#define MSGCLASS_SIG "\x53\x83\xEC\x2A\x8B\x5C\x2A\x2A\xA1\x2A\x2A\x2A\x2A\x89"
#define MSGCLASS_OFFS 9
#define MSGCLASS_SIGLEN 14
#define MSGCLASS_SIG "\x53\x83\xEC\x2A\x8B\x2A\x2A\x2A\xA1\x2A\x2A\x2A\x2A\x89"
#define MSGCLASS_OFFS 9
#define MSGCLASS2_SIGLEN 16
#define MSGCLASS2_SIG "\x55\x89\xE5\x53\x83\xEC\x2A\x8B\x2A\x2A\xA1\x2A\x2A\x2A\x2A\x89"
#define MSGCLASS2_OFFS 11
#endif
/* This is the ugliest function in all of SourceMM */
/* :TODO: Make this prettier */
bool CSmmAPI::CacheUserMessages()
{
SourceHook::MemFuncInfo info = {true, -1, 0, 0};
@ -541,14 +550,35 @@ bool CSmmAPI::CacheUserMessages()
vfunc = vtable[info.vtblindex];
}
UserMsgDict *dict = NULL;
if (vcmp(vfunc, MSGCLASS_SIG, MSGCLASS_SIGLEN))
{
// Get address of CUserMessages
// Get address of CUserMessages instance
char **userMsgClass = *reinterpret_cast<char ***>(vfunc + MSGCLASS_OFFS);
// Get address of CUserMessages::m_UserMessages
UserMsgDict *dict = reinterpret_cast<UserMsgDict *>(*userMsgClass);
dict = reinterpret_cast<UserMsgDict *>(*userMsgClass);
} else if (vcmp(vfunc, MSGCLASS2_SIG, MSGCLASS2_SIGLEN)) {
#ifdef OS_WIN32
/* If we get here, the code is possibly inlined like in Dystopia */
// Get the address of the CUtlRBTree
char *rbtree = *reinterpret_cast<char **>(vfunc + MSGCLASS2_OFFS);
// The CUtlDict should be 8 bytes before the CUtlRBTree (yeah I know this is hacky)
dict = reinterpret_cast<UserMsgDict *>(rbtree - 8);
#elif defined OS_LINUX
// Get address of CUserMessages instance
char **userMsgClass = *reinterpret_cast<char ***>(vfunc + MSGCLASS2_OFFS);
// Get address of CUserMessages::m_UserMessages
dict = reinterpret_cast<UserMsgDict *>(*userMsgClass);
#endif
}
if (dict)
{
m_MsgCount = dict->Count();
// Make sure count falls within bounds of an unsigned byte (engine sends message types as such)
@ -559,7 +589,7 @@ bool CSmmAPI::CacheUserMessages()
}
UserMessage *msg;
// Cache messages in our CUtlDict
for (int i = 0; i < m_MsgCount; i++)
{

1
sourcemm/GAMES.txt
View File

@ -7,6 +7,7 @@ The only Source-based game completely unsupported by Metamod:Source is Dark Mess
User Message API Functions - GetUserMessageCount(), FindUserMessage(), GetUserMessage()
- Counter-Strike: Source
- Day of Defeat: Source
- Dystopia
- Half-Life 2: Deathmatch
- The Ship
- SourceForts