Implement a memory DLL runner

client/MemoryModule.h

@@ -0,0 +1,168 @@
+/*
+ * Memory DLL loading code
+ * Version 0.0.4
+ *
+ * Copyright (c) 2004-2015 by Joachim Bauch / mail@joachim-bauch.de
+ * http://www.joachim-bauch.de
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is MemoryModule.h
+ *
+ * The Initial Developer of the Original Code is Joachim Bauch.
+ *
+ * Portions created by Joachim Bauch are Copyright (C) 2004-2015
+ * Joachim Bauch. All Rights Reserved.
+ *
+ */
+
+#ifndef __MEMORY_MODULE_HEADER
+#define __MEMORY_MODULE_HEADER
+
+#include <windows.h>
+
+typedef void *HMEMORYMODULE;
+
+typedef void *HMEMORYRSRC;
+
+typedef void *HCUSTOMMODULE;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef LPVOID (*CustomAllocFunc)(LPVOID, SIZE_T, DWORD, DWORD, void*);
+typedef BOOL (*CustomFreeFunc)(LPVOID, SIZE_T, DWORD, void*);
+typedef HCUSTOMMODULE (*CustomLoadLibraryFunc)(LPCSTR, void *);
+typedef FARPROC (*CustomGetProcAddressFunc)(HCUSTOMMODULE, LPCSTR, void *);
+typedef void (*CustomFreeLibraryFunc)(HCUSTOMMODULE, void *);
+
+/**
+ * Load EXE/DLL from memory location with the given size.
+ *
+ * All dependencies are resolved using default LoadLibrary/GetProcAddress
+ * calls through the Windows API.
+ */
+HMEMORYMODULE MemoryLoadLibrary(const void *, size_t);
+
+/**
+ * Load EXE/DLL from memory location with the given size using custom dependency
+ * resolvers.
+ *
+ * Dependencies will be resolved using passed callback methods.
+ */
+HMEMORYMODULE MemoryLoadLibraryEx(const void *, size_t,
+    CustomAllocFunc,
+    CustomFreeFunc,
+    CustomLoadLibraryFunc,
+    CustomGetProcAddressFunc,
+    CustomFreeLibraryFunc,
+    void *);
+
+/**
+ * Get address of exported method. Supports loading both by name and by
+ * ordinal value.
+ */
+FARPROC MemoryGetProcAddress(HMEMORYMODULE, LPCSTR);
+
+/**
+ * Free previously loaded EXE/DLL.
+ */
+void MemoryFreeLibrary(HMEMORYMODULE);
+
+/**
+ * Execute entry point (EXE only). The entry point can only be executed
+ * if the EXE has been loaded to the correct base address or it could
+ * be relocated (i.e. relocation information have not been stripped by
+ * the linker).
+ *
+ * Important: calling this function will not return, i.e. once the loaded
+ * EXE finished running, the process will terminate.
+ *
+ * Returns a negative value if the entry point could not be executed.
+ */
+int MemoryCallEntryPoint(HMEMORYMODULE);
+
+/**
+ * Find the location of a resource with the specified type and name.
+ */
+HMEMORYRSRC MemoryFindResource(HMEMORYMODULE, LPCTSTR, LPCTSTR);
+
+/**
+ * Find the location of a resource with the specified type, name and language.
+ */
+HMEMORYRSRC MemoryFindResourceEx(HMEMORYMODULE, LPCTSTR, LPCTSTR, WORD);
+
+/**
+ * Get the size of the resource in bytes.
+ */
+DWORD MemorySizeofResource(HMEMORYMODULE, HMEMORYRSRC);
+
+/**
+ * Get a pointer to the contents of the resource.
+ */
+LPVOID MemoryLoadResource(HMEMORYMODULE, HMEMORYRSRC);
+
+/**
+ * Load a string resource.
+ */
+int MemoryLoadString(HMEMORYMODULE, UINT, LPTSTR, int);
+
+/**
+ * Load a string resource with a given language.
+ */
+int MemoryLoadStringEx(HMEMORYMODULE, UINT, LPTSTR, int, WORD);
+
+/**
+* Default implementation of CustomAllocFunc that calls VirtualAlloc
+* internally to allocate memory for a library
+*
+* This is the default as used by MemoryLoadLibrary.
+*/
+LPVOID MemoryDefaultAlloc(LPVOID, SIZE_T, DWORD, DWORD, void *);
+
+/**
+* Default implementation of CustomFreeFunc that calls VirtualFree
+* internally to free the memory used by a library
+*
+* This is the default as used by MemoryLoadLibrary.
+*/
+BOOL MemoryDefaultFree(LPVOID, SIZE_T, DWORD, void *);
+
+/**
+ * Default implementation of CustomLoadLibraryFunc that calls LoadLibraryA
+ * internally to load an additional libary.
+ *
+ * This is the default as used by MemoryLoadLibrary.
+ */
+HCUSTOMMODULE MemoryDefaultLoadLibrary(LPCSTR, void *);
+
+/**
+ * Default implementation of CustomGetProcAddressFunc that calls GetProcAddress
+ * internally to get the address of an exported function.
+ *
+ * This is the default as used by MemoryLoadLibrary.
+ */
+FARPROC MemoryDefaultGetProcAddress(HCUSTOMMODULE, LPCSTR, void *);
+
+/**
+ * Default implementation of CustomFreeLibraryFunc that calls FreeLibrary
+ * internally to release an additional libary.
+ *
+ * This is the default as used by MemoryLoadLibrary.
+ */
+void MemoryDefaultFreeLibrary(HCUSTOMMODULE, void *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // __MEMORY_MODULE_HEADER