Use better code for inlinehook

230130-hookgamesendto/src/inlinehook.cpp

@@ -2,27 +2,35 @@
 #include "inlinehook.h"
 #include "platform.h"
 
+#ifdef _CPU_X64
+#define HOOK_PATCH_MAX 18
+#endif
+#ifdef _CPU_X86
+#define HOOK_PATCH_MAX 27
+#endif
+
 #ifdef _CPU_X64
 static void *FindModuleTextBlankAlign(HMODULE hmodule)
 {
+    HANDLE curproc = GetCurrentProcess();
     BYTE *p = (BYTE *)hmodule;
     IMAGE_DOS_HEADER dosh;
-    ReadProcessMemory(GetCurrentProcess(), p, &dosh, sizeof(dosh), NULL); // 读取dos头
+    ReadProcessMemory(curproc, p, &dosh, sizeof(dosh), NULL); // 读取dos头
     p += dosh.e_lfanew + 4; // PE信息偏移量
     IMAGE_FILE_HEADER exeh;
-    ReadProcessMemory(GetCurrentProcess(), p, &exeh, sizeof(exeh), NULL); // 读取PE信息
+    ReadProcessMemory(curproc, p, &exeh, sizeof(exeh), NULL); // 读取PE信息
     p += sizeof(exeh) + exeh.SizeOfOptionalHeader; // 跳过可选头
     for (int i = 0; i < exeh.NumberOfSections; i++) {
         IMAGE_SECTION_HEADER sech;
-        ReadProcessMemory(GetCurrentProcess(), p, &sech, sizeof(sech), NULL); // 读取区段头
+        ReadProcessMemory(curproc, p, &sech, sizeof(sech), NULL); // 读取区段头
         if (memcmp(sech.Name, ".text", 5) == 0) { // 是否.text段
             BYTE *offset = (BYTE *)hmodule + sech.VirtualAddress + sech.Misc.VirtualSize; // 计算空白区域偏移量
             offset += 16 - (INT_PTR)offset % 16; // 对齐16字节
             long long buf[2];
-            ReadProcessMemory(GetCurrentProcess(), offset, &buf, 16, NULL);
+            ReadProcessMemory(curproc, offset, &buf, 16, NULL);
             while (buf[0] != 0 || buf[1] != 0) {
                 offset += 16;
-                ReadProcessMemory(GetCurrentProcess(), offset, &buf, 16, NULL);
+                ReadProcessMemory(curproc, offset, &buf, 16, NULL);
             }
             return offset;
         }
@@ -37,8 +45,8 @@ InlineHook::InlineHook(HMODULE hmodule, const char *name, void *fake_func, int e
     // 范围检查
     if (entry_len < HOOK_JUMP_LEN)
         entry_len = HOOK_JUMP_LEN;
-    if (entry_len > 27)
-        entry_len = 27;
+    if (entry_len > HOOK_PATCH_MAX)
+        entry_len = HOOK_PATCH_MAX;
     // 允许func_ptr处最前面的5字节内存可读可写可执行
     VirtualProtect(func_ptr, HOOK_JUMP_LEN, PAGE_EXECUTE_READWRITE, NULL);
     // 使用VirtualAlloc申请内存，使其可读可写可执行