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Make gamedll bridge more legible

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This commit is contained in:
Kenzzer 2025-08-15 16:40:07 +00:00
parent 80e9709382
commit b0d5161dad
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GPG Key ID: 64C3FD4332686DC1
1 changed files with 35 additions and 128 deletions
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163
loader/gamedll.cpp
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@ -250,10 +250,6 @@ static void *is2sc_orig_allowdedi = NULL;
#endif
static void *is2sc_orig_connect = NULL;
class VEmptyClass
{
};
gamedll_bridge_info g_bridge_info;
// Source2 - Rough start order
@ -285,24 +281,8 @@ public:
/* Call the original */
bool result;
{
union
{
bool(VEmptyClass::*mfpnew)(QueryValveInterface factory);
#if defined _WIN32
void *addr;
} u;
u.addr = is2sc_orig_connect;
#else
struct
{
void *addr;
intptr_t adjustor;
} s;
} u;
u.s.addr = is2sc_orig_connect;
u.s.adjustor = 0;
#endif
result = (((VEmptyClass *)config_iface)->*u.mfpnew)(factory);
auto mfp = KHook::BuildMFP<ISource2ServerConfig, bool, QueryValveInterface>(is2sc_orig_connect);
result = (config_iface->*mfp)(factory);
}
mm_PatchConnect(false);
@ -318,24 +298,8 @@ public:
/* Call original function */
{
union
{
void (VEmptyClass::*mfpnew)();
#if defined _WIN32
void *addr;
} u;
u.addr = isgd_orig_shutdown;
#else
struct
{
void *addr;
intptr_t adjustor;
} s;
} u;
u.s.addr = isgd_orig_shutdown;
u.s.adjustor = 0;
#endif
(((VEmptyClass *)config_iface)->*u.mfpnew)();
auto mfp = KHook::BuildMFP<ISource2ServerConfig, void>(isgd_orig_shutdown);
(config_iface->*mfp)();
}
mm_UnloadLibrary(gamedll_lib);
@ -414,24 +378,8 @@ public:
/* Call the original */
InitReturnVal_t result;
{
union
{
InitReturnVal_t(VEmptyClass::*mfpnew)();
#if defined _WIN32
void *addr;
} u;
u.addr = isgd_orig_init;
#else
struct
{
void *addr;
intptr_t adjustor;
} s;
} u;
u.s.addr = isgd_orig_init;
u.s.adjustor = 0;
#endif
result = (((VEmptyClass *)gamedll_iface)->*u.mfpnew)();
auto mfp = KHook::BuildMFP<IServerGameDLL, InitReturnVal_t>(isgd_orig_init);
result = (gamedll_iface->*mfp)();
}
/**
@ -519,27 +467,8 @@ public:
/* Call the original */
bool result;
{
union
{
bool (VEmptyClass::*mfpnew)(QueryValveInterface engineFactory,
QueryValveInterface physicsFactory,
QueryValveInterface fileSystemFactory,
void *pGlobals);
#if defined _WIN32
void *addr;
} u;
u.addr = isgd_orig_init;
#else
struct
{
void *addr;
intptr_t adjustor;
} s;
} u;
u.s.addr = isgd_orig_init;
u.s.adjustor = 0;
#endif
result = (((VEmptyClass *)gamedll_iface)->*u.mfpnew)(engineFactory,
auto mfp = KHook::BuildMFP<IServerGameDLL, bool, QueryValveInterface, QueryValveInterface, QueryValveInterface, void*>(isgd_orig_init);
result = (gamedll_iface->*mfp)(engineFactory,
physicsFactory,
fileSystemFactory,
pGlobals);
@ -576,24 +505,8 @@ public:
/* Call original function */
{
union
{
void (VEmptyClass::*mfpnew)();
#if defined _WIN32
void *addr;
} u;
u.addr = isgd_orig_shutdown;
#else
struct
{
void *addr;
intptr_t adjustor;
} s;
} u;
u.s.addr = isgd_orig_shutdown;
u.s.adjustor = 0;
#endif
(((VEmptyClass *)gamedll_iface)->*u.mfpnew)();
auto mfp = KHook::BuildMFP<IServerGameDLL, void>(isgd_orig_shutdown);
(gamedll_iface->*mfp)();
}
mm_UnloadLibrary(gamedll_lib);
@ -624,13 +537,14 @@ mm_PatchDllInit(bool patch)
if (g_is_source2)
{
vtable_src = (void **)*(void **)&is2s_thunk;
vtable_src = *(void ***)&is2s_thunk;
vtable_dest = *(void ***)config_iface;
}
else
{
vtable_src = (void **)*(void **)&isgd_thunk;
vtable_src = *(void ***)&isgd_thunk;
vtable_dest = *(void ***)gamedll_iface;
}
vtable_dest = (void **)*(void **)gamedll_iface;
KHook::Memory::SetAccess(&vtable_dest[mfp],
sizeof(void*),
@ -655,46 +569,41 @@ mm_PatchDllShutdown()
{
void **vtable_src;
void **vtable_dest;
std::int32_t mfp;
if (g_is_source2)
{
mfp = KHook::GetVtableIndex(&ISource2ServerConfig::Disconnect);
isgd_shutdown_index = KHook::GetVtableIndex(&ISource2ServerConfig::Disconnect);
}
else
{
mfp = KHook::GetVtableIndex(&IServerGameDLL::DLLShutdown);
isgd_shutdown_index = KHook::GetVtableIndex(&IServerGameDLL::DLLShutdown);
}
assert(mfp != -1);
assert(isgd_shutdown_index != -1);
if (g_is_source2)
{
vtable_src = (void **)*(void **)&is2sc_thunk;
vtable_dest = (void **)*(void **)config_iface;
vtable_src = *(void ***)&is2sc_thunk;
vtable_dest = *(void ***)config_iface;
}
else
{
vtable_src = (void **)*(void **)&isgd_thunk;
vtable_dest = (void **)*(void **)gamedll_iface;
vtable_src = *(void ***)&isgd_thunk;
vtable_dest = *(void ***)gamedll_iface;
}
isgd_orig_shutdown = vtable_dest[isgd_shutdown_index];
vtable_dest[isgd_shutdown_index] = vtable_src[mfp];
vtable_dest[isgd_shutdown_index] = vtable_src[isgd_shutdown_index];
}
#if defined _WIN32
static void
mm_PatchAllowDedicated(bool patch)
{
void **vtable_src;
void **vtable_dest;
std::int32_t is2sc_allowdedi_index = KHook::GetVtableIndex(&ISource2ServerConfig::AllowDedicatedServers);
assert(is2sc_allowdedi_index != -1);
std::int32_t mfp = KHook::GetVtableIndex(&ISource2ServerConfig::AllowDedicatedServers);
assert(mfp != -1);
vtable_src = (void **) *(void **) &is2sc_thunk;
vtable_dest = (void **) *(void **) config_iface;
auto vtable_src = *(void***) &is2sc_thunk;
auto vtable_dest = *(void ***) config_iface;
KHook::Memory::SetAccess(&vtable_dest[is2sc_allowdedi_index],
sizeof(void*),
@ -704,7 +613,7 @@ mm_PatchAllowDedicated(bool patch)
{
assert(is2sc_orig_allowdedi == NULL);
is2sc_orig_allowdedi = vtable_dest[is2sc_allowdedi_index];
vtable_dest[is2sc_allowdedi_index] = vtable_src[mfp];
vtable_dest[is2sc_allowdedi_index] = vtable_src[is2sc_allowdedi_index];
}
else
{
@ -718,28 +627,26 @@ mm_PatchAllowDedicated(bool patch)
static void
mm_PatchConnect(bool patch)
{
void **vtable_src;
void **vtable_dest;
std::int32_t index = KHook::GetVtableIndex(&ISource2ServerConfig::Connect);
assert(index != -1);
std::int32_t mfp = KHook::GetVtableIndex(&ISource2ServerConfig::Connect);
auto vtable_src = *(void***) &is2sc_thunk;
auto vtable_dest = *(void ***) config_iface;
vtable_src = (void **) *(void **) &is2sc_thunk;
vtable_dest = (void **) *(void **) config_iface;
KHook::Memory::SetAccess(&vtable_dest[mfp],
KHook::Memory::SetAccess(&vtable_dest[index],
sizeof(void*),
KHook::Memory::Flags::READ | KHook::Memory::Flags::WRITE | KHook::Memory::Flags::EXECUTE);
if (patch)
{
assert(is2sc_orig_connect == NULL);
is2sc_orig_connect = vtable_dest[mfp];
vtable_dest[mfp] = vtable_src[mfp];
is2sc_orig_connect = vtable_dest[index];
vtable_dest[index] = vtable_src[index];
}
else
{
assert(is2sc_orig_connect != NULL);
vtable_dest[mfp] = is2sc_orig_connect;
vtable_dest[index] = is2sc_orig_connect;
is2sc_orig_connect = NULL;
}
}