forked from Dniel97/segatools
88 lines
2.0 KiB
C
88 lines
2.0 KiB
C
#include <initguid.h>
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#include <windows.h>
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#include <assert.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include "mercuryhook/elisabeth.h"
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#include "mercuryhook/mercury-dll.h"
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#include "hook/table.h"
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#include "hooklib/uart.h"
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#include "hooklib/dll.h"
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#include "hooklib/path.h"
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#include "hooklib/setupapi.h"
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#include "util/dprintf.h"
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/* Hooks targeted DLLs dynamically loaded by elisabeth. */
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static void dll_hook_insert_hooks(HMODULE target);
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static FARPROC WINAPI my_GetProcAddress(HMODULE hModule, const char *name);
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static FARPROC (WINAPI *next_GetProcAddress)(HMODULE hModule, const char *name);
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static int my_USBIntLED_Init();
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static int my_USBIntLED_set();
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static const struct hook_symbol win32_hooks[] = {
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{
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.name = "GetProcAddress",
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.patch = my_GetProcAddress,
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.link = (void **) &next_GetProcAddress
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}
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};
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HRESULT elisabeth_hook_init(struct elisabeth_config *cfg)
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{
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if (!cfg->enable) {
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return S_OK;
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}
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dll_hook_insert_hooks(NULL);
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dprintf("Elisabeth: Init\n");
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return S_OK;
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}
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static void dll_hook_insert_hooks(HMODULE target)
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{
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hook_table_apply(
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target,
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"kernel32.dll",
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win32_hooks,
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_countof(win32_hooks));
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}
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FARPROC WINAPI my_GetProcAddress(HMODULE hModule, const char *name)
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{
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uintptr_t ordinal = (uintptr_t) name;
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FARPROC result = next_GetProcAddress(hModule, name);
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if (ordinal > 0xFFFF) {
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/* Import by name */
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if (strcmp(name, "USBIntLED_Init") == 0) {
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result = (FARPROC) my_USBIntLED_Init;
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}
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if (strcmp(name, "USBIntLED_set") == 0) {
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result = (FARPROC) my_USBIntLED_set;
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}
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}
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return result;
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}
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/* Intercept the call to initialize the LED board. */
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static int my_USBIntLED_Init()
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{
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dprintf("Elisabeth: my_USBIntLED_Init hit!\n");
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return 1;
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}
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static int my_USBIntLED_set(int data1, struct led_data data2)
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{
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assert(mercury_dll.set_leds != NULL);
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mercury_dll.set_leds(data2);
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return 1;
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}
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