Archives/GlosSI-fork
2
0
Fork 0
mirror of https://github.com/Thracky/GlosSI.git synced 2024-11-03 09:40:18 +00:00
Code Issues Projects Releases Wiki Activity

don't patch any instructions if address is not found

Browse Source 
also fix some typos in comments + add a bit more + fix function signature
This commit is contained in:
Peter Repukat 2016-11-28 10:57:47 +01:00
parent e6031186f3
commit 60cd81dbf1
1 changed files with 16 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
EnforceBindingDLL/EnforceBindings.cpp
View File

@ -25,7 +25,13 @@ const int32_t bigPictureBindingsID = 413090; //big_picture_config appid
const int32_t steamChordBindingsID = 443510; //steam_chord_config appid
int32_t enforceBindingsID = 413080;
char originalBytes[] = "\x8B\x45\x0c\x57\x8B\x7D\x08\x3D\x76\xC4\x06\x00"; //original assembly code of steamclient.dll that we want to hook
char mask[] = "xxxxxxxx????"; //mask for searching
/* ==
mov eax, dword ptr ss : [ebp + 0xc] //appId of bindings to be switched gets moved into eax register
push edi //part of original steam code
mov edi, dword ptr ss : [ebp + 0x8] //part of original steam code
cmp eax, 0x6C476 //part of original steam code - checks if bindings to be set are steamchord bindings
*/
char mask[] = "xxxxxxxxxxxx"; //mask for searching
__declspec(naked) void enforceBindingsHookFn()
{
@ -37,7 +43,7 @@ __declspec(naked) void enforceBindingsHookFn()
if (currentBindings != desktopBindingsID //if the current bindings aren't desktop, big picture, or steam-chord bindings
&& currentBindings != bigPictureBindingsID //they have to be our game bindings
&& currentBindings != steamChordBindingsID) //we can grab theme here, because bindings switch, after we have injected and the target changes focuses window
&& currentBindings != steamChordBindingsID) //we can grab them here, because bindings switch right after we have injected and the target changes focused window
{
enforceBindingsID = currentBindings;
}
@ -64,12 +70,20 @@ __declspec(naked) void enforceBindingsHookFn()
void EnforceBindings::patchBytes()
{
address = FindPattern("steamclient.dll", originalBytes, mask);
if (address == NULL)
{
return;
}
JMPBack = address + 12; //12 size of pattern/mask == patched instructions
PlaceJMP((BYTE*)address, (DWORD)enforceBindingsHookFn, 12);
}
void EnforceBindings::Unpatch()
{
if (address == NULL)
{
return;
}
RestoreBytes((BYTE*)address, (BYTE*)originalBytes, 12);
}