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Cstrike: Refactor code to seperate detours for readability/maintainability + Fix OSX symbols.

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This commit is contained in:
Arkshine 2014-06-01 19:00:37 +02:00
parent c96456503c
commit f1e206fde6
4 changed files with 116 additions and 70 deletions
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35
dlls/cstrike/cstrike/CstrikeDatas.h
View File

@ -145,14 +145,16 @@
#define OFFSET_HOSTAGEID 516 + EXTRAOFFSET // +29
#endif
#if defined __linux__
#if defined(__linux__)
#define CS_DETOURCOPYBYTES_CLIENTCOMMAND 6
#define CS_SYM_USEBOTARGS "UseBotArgs"
#define CS_SYM_BOTARGS "BotArgs"
#elif defined __APPLE__
#define CS_IDENT_USEBOTARGS "UseBotArgs"
#define CS_IDENT_BOTARGS "BotArgs"
#define CS_IDENT_HIDDEN_STATE false
#elif defined(__APPLE__)
#define CS_DETOURCOPYBYTES_CLIENTCOMMAND 5
#define CS_SYM_USEBOTARGS "UseBotArgs"
#define CS_SYM_BOTARGS "BotArgs"
#define CS_IDENT_USEBOTARGS "UseBotArgs"
#define CS_IDENT_BOTARGS "BotArgs"
#define CS_IDENT_HIDDEN_STATE true
#else
#define CS_DETOURCOPYBYTES_CLIENTCOMMAND 6
#define CS_CLICMD_OFFS_USEBOTARGS 2
@ -163,17 +165,20 @@
* CS_OnBuy forward
*/
#if defined(__linux__)
#define CS_SYM_CANBUYTHIS "_Z10CanBuyThisP11CBasePlayeri"
#define CS_SYM_BUYITEM "_Z7BuyItemP11CBasePlayeri"
#define CS_SYM_BUYGUNAMMO "_Z10BuyGunAmmoR11CBasePlayerR15CBasePlayerItemb"
#define CS_IDENT_CANBUYTHIS "_Z10CanBuyThisP11CBasePlayeri"
#define CS_IDENT_BUYITEM "_Z7BuyItemP11CBasePlayeri"
#define CS_IDENT_BUYGUNAMMO "_Z10BuyGunAmmoR11CBasePlayerR15CBasePlayerItemb"
#define CS_IDENT_HIDDEN_STATE false
#elif defined(__APPLE__)
#define CS_SYM_CANBUYTHIS "__Z10CanBuyThisP11CBasePlayeri"
#define CS_SYM_BUYITEM "__Z7BuyItemP11CBasePlayeri"
#define CS_SYM_BUYGUNAMMO "__Z10BuyGunAmmoR11CBasePlayerR15CBasePlayerItemb"
#define CS_IDENT_CANBUYTHIS "_Z10CanBuyThisP11CBasePlayeri"
#define CS_IDENT_BUYITEM "_Z7BuyItemP11CBasePlayeri"
#define CS_IDENT_BUYGUNAMMO "_Z10BuyGunAmmoR11CBasePlayerR15CBasePlayerItemb"
#define CS_IDENT_HIDDEN_STATE true
#elif defined(WIN32)
#define CS_SIG_CANBUYTHIS "\x53\x8B\x2A\x2A\x2A\x2A\x2A\x56\x8B\x2A\x2A\x2A\x57"
#define CS_SIG_BUYITEM "\x53\x56\x8B\x2A\x2A\x2A\xBB\x2A\x2A\x2A\x2A\x57\x53"
#define CS_SIG_BUYGUNAMMO "\x56\x57\x8B\x2A\x2A\x2A\x6A\x2A\x8B\x2A\xE8\x2A\x2A\x2A\x2A\x84\x2A\x0F"
#define CS_IDENT_CANBUYTHIS "\\x53\\x8B\\x2A\\x2A\\x2A\\x2A\\x2A\\x56\\x8B\\x2A\\x2A\\x2A\\x57"
#define CS_IDENT_BUYITEM "\\x53\\x56\\x8B\\x2A\\x2A\\x2A\\xBB\\x2A\\x2A\\x2A\\x2A\\x57\\x53"
#define CS_IDENT_BUYGUNAMMO "\\x56\\x57\\x8B\\x2A\\x2A\\x2A\\x6A\\x2A\\x8B\\x2A\\xE8\\x2A\\x2A\\x2A\\x2A\\x84\\x2A\\x0F"
#define CS_IDENT_HIDDEN_STATE false
#endif
#define CSI_P228 CSW_P228

86
dlls/cstrike/cstrike/CstrikeHacks.cpp
View File

@ -32,14 +32,10 @@
*/
#include "CstrikeDatas.h"
#include "CstrikeUtils.h"
#include <MemoryUtils.h>
#include "CDetour/detours.h"
#if defined(__APPLE__)
#include <mach-o/nlist.h>
#endif
void CtrlDetours(bool set);
void CtrlDetours_ClientCommand(bool set);
void CtrlDetours_BuyCommands(bool set);
int g_CSCliCmdFwd = -1;
int g_CSBuyCmdFwd = -1;
@ -55,12 +51,18 @@ CDetour *g_BuyGunAmmoDetour = NULL;
void InitializeHacks()
{
CtrlDetours(true);
#if defined AMD64
#error UNSUPPORTED
#endif
CtrlDetours_ClientCommand(true);
CtrlDetours_BuyCommands(true);
}
void ShutdownHacks()
{
CtrlDetours(false);
CtrlDetours_ClientCommand(false);
CtrlDetours_BuyCommands(false);
}
@ -136,68 +138,47 @@ DETOUR_DECL_STATIC3(BuyGunAmmo, bool, void*, pvPlayer, void*, pvWeapon, bool, bB
}
void CtrlDetours(bool set)
void CtrlDetours_ClientCommand(bool set)
{
#if defined AMD64
#error UNSUPPORTED
#endif
if (set)
{
char libName[256];
uintptr_t base;
void *target = (void *)MDLL_ClientCommand;
if (!g_MemUtils.GetLibraryOfAddress(target, libName, sizeof(libName), &base))
{
return;
}
void *canBuyThisAddress = NULL;
void *buyItemAddress = NULL;
void *buyGunAmmoAddress = NULL;
#if defined(WIN32)
canBuyThisAddress = g_MemUtils.DecodeAndFindPattern(target, CS_SIG_CANBUYTHIS);
buyItemAddress = g_MemUtils.DecodeAndFindPattern(target, CS_SIG_BUYITEM);
buyGunAmmoAddress = g_MemUtils.DecodeAndFindPattern(target, CS_SIG_BUYGUNAMMO);
g_UseBotArgs = *(int **)((unsigned char *)target + CS_CLICMD_OFFS_USEBOTARGS);
g_BotArgs = (const char **)*(const char **)((unsigned char *)target + CS_CLICMD_OFFS_BOTARGS);
#elif defined(__linux__) || defined(__APPLE__)
Dl_info info;
void *handle = NULL;
if (dladdr(target, &info) == 0) || (handle = dlopen(info.dli_fname, RTLD_NOW)) == NULL)
{
return;
}
canBuyThisAddress = g_MemUtils.ResolveSymbol(handle, CS_SYM_CANBUYTHIS);
buyItemAddress = g_MemUtils.ResolveSymbol(handle, CS_SYM_BUYITEM);
buyGunAmmoAddress = g_MemUtils.ResolveSymbol(handle, CS_SYM_BUYGUNAMMO);
g_UseBotArgs = (int *)g_MemUtils.ResolveSymbol(handle, CS_SYM_USEBOTARGS);
g_BotArgs = (const char **)g_MemUtils.ResolveSymbol(handle, CS_SYM_BOTARGS);
dlclose(handle);
g_UseBotArgs = (int *)UTIL_FindAddressFromEntry(CS_IDENT_USEBOTARGS, CS_IDENT_HIDDEN_STATE);
g_BotArgs = (const char **)UTIL_FindAddressFromEntry(CS_IDENT_BOTARGS, CS_IDENT_HIDDEN_STATE);
#endif
g_ClientCommandDetour = DETOUR_CREATE_STATIC_FIXED(C_ClientCommand, target);
g_CanBuyThisDetour = DETOUR_CREATE_STATIC_FIXED(CanBuyThis, canBuyThisAddress);
g_BuyItemDetour = DETOUR_CREATE_STATIC_FIXED(BuyItem, buyItemAddress);
g_BuyGunAmmoDetour = DETOUR_CREATE_STATIC_FIXED(BuyGunAmmo, buyGunAmmoAddress);
g_ClientCommandDetour = DETOUR_CREATE_STATIC_FIXED(C_ClientCommand, target);
if (g_ClientCommandDetour != NULL)
g_ClientCommandDetour->EnableDetour();
else
{
MF_Log("No Client Commands detours could be initialized - Disabled Client Command forward.");
}
MF_Log("No Client Commands detour could be initialized - Disabled Client Command forward.");
}
else
{
g_ClientCommandDetour->Destroy();
}
}
void CtrlDetours_BuyCommands(bool set)
{
if (set)
{
void *canBuyThisAddress = UTIL_FindAddressFromEntry(CS_IDENT_CANBUYTHIS, CS_IDENT_HIDDEN_STATE);
void *buyItemAddress = UTIL_FindAddressFromEntry(CS_IDENT_BUYITEM, CS_IDENT_HIDDEN_STATE);
void *buyGunAmmoAddress = UTIL_FindAddressFromEntry(CS_IDENT_BUYGUNAMMO, CS_IDENT_HIDDEN_STATE);
g_CanBuyThisDetour = DETOUR_CREATE_STATIC_FIXED(CanBuyThis, canBuyThisAddress);
g_BuyItemDetour = DETOUR_CREATE_STATIC_FIXED(BuyItem, buyItemAddress);
g_BuyGunAmmoDetour = DETOUR_CREATE_STATIC_FIXED(BuyGunAmmo, buyGunAmmoAddress);
if (g_CanBuyThisDetour != NULL && g_BuyItemDetour != NULL && g_BuyGunAmmoDetour != NULL)
{
@ -212,7 +193,6 @@ void CtrlDetours(bool set)
}
else
{
g_CanBuyThisDetour->Destroy();
g_BuyItemDetour->Destroy();
g_BuyGunAmmoDetour->Destroy();
g_ClientCommandDetour->Destroy();

60
dlls/cstrike/cstrike/CstrikeUtils.cpp
View File

@ -31,6 +31,7 @@
* version.
*/
#include "amxxmodule.h"
#include "MemoryUtils.h"
bool UTIL_IsPlayer(AMX* amx, edict_t* pPlayer)
{
@ -60,3 +61,62 @@ void UTIL_TextMsg_Generic(edict_t* pPlayer, const char* message)
However both 1 and 2 seems to go to console with Steam CS.
*/
}
void *UTIL_FindAddressFromEntry(const char *entry, bool isHidden, const char *library)
{
void *addressInBase = NULL;
void *finalAddress;
if (strcmp(library, "mod") == 0)
{
addressInBase = (void *)MDLL_Spawn;
}
else if (strcmp(library, "engine") == 0)
{
addressInBase = (void *)gpGlobals;
}
finalAddress = NULL;
if (*entry != '\\')
{
#if defined(WIN32)
MEMORY_BASIC_INFORMATION mem;
if (VirtualQuery(addressInBase, &mem, sizeof(mem)))
{
finalAddress = g_MemUtils.ResolveSymbol(mem.AllocationBase, entry);
}
#elif defined(__linux__) || defined(__APPLE__)
Dl_info info;
void *handle = NULL;
if (dladdr(addressInBase, &info) != 0)
{
void *handle = dlopen(info.dli_fname, RTLD_NOW);
if (handle)
{
if (isHidden)
{
finalAddress = g_MemUtils.ResolveSymbol(handle, entry);
}
else
{
finalAddress = dlsym(handle, entry);
}
dlclose(handle);
}
}
#endif
}
else
{
finalAddress = g_MemUtils.DecodeAndFindPattern(addressInBase, entry);
}
return finalAddress != NULL ? finalAddress : NULL;
}

1
dlls/cstrike/cstrike/CstrikeUtils.h
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@ -35,6 +35,7 @@
bool UTIL_IsPlayer(AMX* amx, edict_t* pPlayer);
void UTIL_TextMsg_Generic(edict_t* pPlayer, const char* message);
void *UTIL_FindAddressFromEntry(const char *entry, bool isHidden = false, const char *library = "mod");
#define GETINFOKEYBUFFER (*g_engfuncs.pfnGetInfoKeyBuffer)
#define SETCLIENTKEYVALUE (*g_engfuncs.pfnSetClientKeyValue)