CubeWorld
/
Cube-World-Mod-Launcher
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Implement new .fip method of injecting mods

This commit is contained in:
ChrisMiuchiz 2019-10-15 00:52:28 -04:00
parent 1c146526cb
commit 3a4d8cabf3
3 changed files with 241 additions and 43 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

74
CubeModLoader/crc.cpp Normal file
View File

@ -0,0 +1,74 @@
#include "crc.h"
#include <iostream>
unsigned int crc32_table[] = {
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
};
unsigned int crc32_buf(const char* buf, unsigned long len)
{
unsigned int crc = ~0;
while (len--)
crc = crc32_table[(crc ^ *buf++) & 0xFF] ^ (crc >> 8);
return crc ^ ~0;
}
unsigned int crc32_file(const char* fileName){
FILE* file = fopen(fileName, "rb");
fseek(file, 0, SEEK_END);
int fileSize = ftell(file);
char* fileContents = new char[fileSize+1];
fseek(file, 0, SEEK_SET);
fread(fileContents, 1, fileSize, file);
fclose(file);
int result = crc32_buf(fileContents, fileSize);
delete[] fileContents;
return result;
}

7
CubeModLoader/crc.h Normal file
View File

@ -0,0 +1,7 @@
#ifndef CRC_H
#define CRC_H
unsigned int crc32_buf(const char* buf, unsigned long len);
unsigned int crc32_file(const char* fileName);
#endif // CRC_H

203
CubeModLoader/main.cpp
View File

@ -2,10 +2,17 @@
#include <windows.h> #include <windows.h>
#include <vector> #include <vector>
#include "DLL.h" #include "DLL.h"
#include "crc.h"
#define MOD_MAJOR_VERSION 4 #define MOD_MAJOR_VERSION 4
#define MOD_MINOR_VERSION 1 #define MOD_MINOR_VERSION 1
#define CUBE_VERSION "1.0.0-1"
#define CUBE_PACKED_CRC 0xC7682619
#define CUBE_UNPACKED_CRC 0xBA092543
#define MODLOADER_NAME "CubeModLoader"
#define no_optimize __attribute__((optimize("O0"))) #define no_optimize __attribute__((optimize("O0")))
@ -30,8 +37,12 @@ dllname->name = GetProcAddress(dllname->handle, #name);
using namespace std; using namespace std;
void* base; void* base; // Module base
vector <DLL*> modDLLs; vector <DLL*> modDLLs; // Every mod we've loaded
HMODULE hSelf; // A handle to ourself, to prevent being unloaded
void* initterm_e; // A pointer to a function which is run extremely soon after starting, or after being unpacked
const size_t BYTES_TO_MOVE = 14; // The size of a far jump
char initterm_e_remember[BYTES_TO_MOVE]; // We'll use this to store the code we overwrite in initterm_e, so we can put it back later.
void WriteFarJMP(void* source, void* destination) { void WriteFarJMP(void* source, void* destination) {
DWORD dwOldProtection; DWORD dwOldProtection;
@ -59,55 +70,61 @@ void SetupHandlers() {
SetupCheckInventoryFullHandler(); SetupCheckInventoryFullHandler();
} }
void Popup(const char* title, char* msg ){ void Popup(const char* title, const char* msg ) {
MessageBoxA(0, msg, title, MB_OK | MB_ICONINFORMATION); MessageBoxA(0, msg, title, MB_OK | MB_ICONINFORMATION);
} }
extern "C" __declspec(dllexport) BOOL APIENTRY DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) { void PrintLoadedMods() {
switch (fdwReason) { std::string mods("Mods Loaded:\n");
case DLL_PROCESS_ATTACH: for (DLL* dll : modDLLs) {
base = GetModuleHandle(NULL); mods += dll->fileName;
mods += "\n";
}
Popup("Loaded Mods", mods.c_str());
}
SetupHandlers(); // Handles injecting callbacks and the mods
void StartMods() {
char msg[256] = {0};
//Find mods SetupHandlers();
HANDLE hFind;
WIN32_FIND_DATA data;
CreateDirectory("Mods", NULL); //Find mods
hFind = FindFirstFile("Mods\\*.dll", &data); HANDLE hFind;
if (hFind != INVALID_HANDLE_VALUE) { WIN32_FIND_DATA data;
do {
// We should be loaded into the application's address space, so we can just LoadLibraryA
DLL* dll = new DLL(string("Mods\\") + data.cFileName);
dll->Load();
printf("Loaded %s\n", dll->fileName.c_str());
modDLLs.push_back(dll);
} while (FindNextFile(hFind, &data));
FindClose(hFind);
}
// Find all the functions the mods may export CreateDirectory("Mods", NULL);
for (DLL* dll: modDLLs) { hFind = FindFirstFile("Mods\\*.dll", &data);
MUST_IMPORT(dll, ModMajorVersion); if (hFind != INVALID_HANDLE_VALUE) {
MUST_IMPORT(dll, ModMinorVersion); do {
MUST_IMPORT(dll, ModPreInitialize); // We should be loaded into the application's address space, so we can just LoadLibraryA
IMPORT(dll, ModInitialize); DLL* dll = new DLL(string("Mods\\") + data.cFileName);
IMPORT(dll, HandleChat); dll->Load();
IMPORT(dll, HandleP2PRequest); printf("Loaded %s\n", dll->fileName.c_str());
IMPORT(dll, HandleCheckInventoryFull); modDLLs.push_back(dll);
} } while (FindNextFile(hFind, &data));
FindClose(hFind);
}
// Ensure version compatibility // Find all the functions the mods may export
char msg[512] = {0}; for (DLL* dll: modDLLs) {
for (DLL* dll: modDLLs) { MUST_IMPORT(dll, ModMajorVersion);
int majorVersion = ((int(*)())dll->ModMajorVersion)(); MUST_IMPORT(dll, ModMinorVersion);
int minorVersion = ((int(*)())dll->ModMinorVersion)(); MUST_IMPORT(dll, ModPreInitialize);
if (majorVersion != MOD_MAJOR_VERSION) { IMPORT(dll, ModInitialize);
sprintf(msg, "%s has major version %d but requires %d.\n", dll->fileName.c_str(), majorVersion, MOD_MAJOR_VERSION); IMPORT(dll, HandleChat);
Popup("Error", msg); IMPORT(dll, HandleP2PRequest);
exit(1); IMPORT(dll, HandleCheckInventoryFull);
} }
// Ensure version compatibility
for (DLL* dll: modDLLs) {
int majorVersion = ((int(*)())dll->ModMajorVersion)();
int minorVersion = ((int(*)())dll->ModMinorVersion)();
if (majorVersion != MOD_MAJOR_VERSION) {
sprintf(msg, "%s has major version %d but requires %d.\n", dll->fileName.c_str(), majorVersion, MOD_MAJOR_VERSION);
Popup("Error", msg);
exit(1);
if (minorVersion > MOD_MINOR_VERSION) { if (minorVersion > MOD_MINOR_VERSION) {
sprintf(msg, "%s has minor version %d but requires %d or lower.\n", dll->fileName.c_str(), minorVersion, MOD_MINOR_VERSION); sprintf(msg, "%s has minor version %d but requires %d or lower.\n", dll->fileName.c_str(), minorVersion, MOD_MINOR_VERSION);
@ -126,7 +143,107 @@ extern "C" __declspec(dllexport) BOOL APIENTRY DllMain(HINSTANCE hinstDLL, DWORD
((void(*)())dll->ModInitialize)(); ((void(*)())dll->ModInitialize)();
} }
} }
}
if (hSelf) PrintLoadedMods();
return;
}
void* StartMods_ptr = (void*)&StartMods;
void no_optimize ASMStartMods() {
asm(PUSH_ALL
PREPARE_STACK
// Initialize mods and callbacks
"call [StartMods_ptr] \n"
// We can put initterm_e back how we found it.
"call [CopyInitializationBack_ptr] \n"
RESTORE_STACK
POP_ALL
// Run initterm_e properly this time.
"jmp [initterm_e] \n"
);
}
void PatchFreeImage(){
DWORD oldProtect;
void* patchaddr = (void*)GetModuleHandleA("FreeImage.dll") + 0x1E8C12;
VirtualProtect((LPVOID)patchaddr, 8, PAGE_EXECUTE_READWRITE, &oldProtect);
*(uint64_t*)patchaddr = 0x909090000000A8E9;
}
void InitializationPatch() {
// Get pointer to initterm_e
initterm_e = *(void**)(base + 0x42CBD8);
// Store old code, we'll copy it back once we regain control.
memcpy(initterm_e_remember, initterm_e, BYTES_TO_MOVE);
// Write a jump to our code
WriteFarJMP(initterm_e, (void*)&ASMStartMods);
}
// This restores initterm_e to how it was before we hijacked it.
void CopyInitializationBack() {
DWORD dwOldProtection;
VirtualProtect(initterm_e, BYTES_TO_MOVE, PAGE_EXECUTE_READWRITE, &dwOldProtection);
memcpy(initterm_e, initterm_e_remember, BYTES_TO_MOVE);
VirtualProtect(initterm_e, BYTES_TO_MOVE, dwOldProtection, &dwOldProtection);
return;
}
void* CopyInitializationBack_ptr = (void*)&CopyInitializationBack;
bool already_ran = false;
extern "C" __declspec(dllexport) BOOL APIENTRY DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) {
switch (fdwReason) {
case DLL_PROCESS_ATTACH:
base = GetModuleHandle(NULL);
// Don't allow this to run more than once
if (already_ran)
return 1;
already_ran = true;
char msg[256] = {0};
// This serves to prevent ourself from being unloaded, if we are a .fip
hSelf = LoadLibrary(MODLOADER_NAME ".fip");
// The user could also inject this as a DLL, so if we can't find our .fip, we were probably launched with a launcher.
// Therefore, we don't need to prompt the user.
if (hSelf) {
if (MessageBoxA(NULL, "Would you like to run with mods?", "Cube World Mod Loader", MB_YESNO) != IDYES) {
PatchFreeImage();
return true;
}
}
base = GetModuleHandle(NULL);
// Figure out where the executable is and verify its checksum
char cubePath[_MAX_PATH+1];
GetModuleFileName(NULL, cubePath, _MAX_PATH);
uint32_t checksum = crc32_file(cubePath);
if (checksum == CUBE_PACKED_CRC || checksum == CUBE_UNPACKED_CRC) {
// Patch some code to run StartMods. This method makes it work with AND without SteamStub.
InitializationPatch();
} else {
sprintf(msg, "%s does not seem to be version %s. CRC %08X", cubePath, CUBE_VERSION, checksum);
Popup("Error", msg);
PatchFreeImage();
return true;
}
Sleep(250);
PatchFreeImage();
} }
return true; return true;
} }