diff options
Diffstat (limited to 'plugins/CryptoPP/src/dllloader.cpp')
| -rw-r--r-- | plugins/CryptoPP/src/dllloader.cpp | 280 |
1 files changed, 0 insertions, 280 deletions
diff --git a/plugins/CryptoPP/src/dllloader.cpp b/plugins/CryptoPP/src/dllloader.cpp deleted file mode 100644 index 160e5d98c4..0000000000 --- a/plugins/CryptoPP/src/dllloader.cpp +++ /dev/null @@ -1,280 +0,0 @@ -/*
-* Loading dll from memory
-*
-* Written by Vitaliy Shitts (vit@shittz.ru)
-* Copyright (c) 2004 Vitaliy Shittz.
-*
-* THIS CODE IS PROVIDED "AS IS". NO WARRANTY OF ANY KIND IS EXPRESSED
-* OR IMPLIED. YOU USE AT YOUR OWN RISK. THE AUTHOR ACCEPTS NO LIABILITY
-* IF IT CAUSES ANY DAMAGE TO YOU OR YOUR COMPUTER WHATSOEVER.
-*
-* Beware of bugs.
-*/
-
-#include "commonheaders.h"
-
-#ifdef DLL_FROM_RESOURCE
-
-#ifndef MIN
-# define MIN(a,b) ((a)<(b)?(a):(b))
-#endif
-
-typedef BOOL (WINAPI *DLLMAIN)(HINSTANCE,DWORD,LPVOID);
-
-#pragma warning (push)
-#pragma warning (disable: 4311; disable: 4312; disable: 4018)
-
-DWORD GetSectionProtection(DWORD sc)
-{
- DWORD dwResult=0;
- if (sc & IMAGE_SCN_MEM_NOT_CACHED)
- dwResult |= PAGE_NOCACHE;
-
- if (sc & IMAGE_SCN_MEM_EXECUTE)
- {
- if (sc & IMAGE_SCN_MEM_READ)
- {
- if (sc & IMAGE_SCN_MEM_WRITE)
- dwResult |= PAGE_EXECUTE_READWRITE;
- else
- dwResult |= PAGE_EXECUTE_READ;
- }
- else
- {
- if (sc & IMAGE_SCN_MEM_WRITE)
- dwResult |= PAGE_EXECUTE_WRITECOPY;
- else
- dwResult |= PAGE_EXECUTE;
- }
- }
- else
- {
- if (sc & IMAGE_SCN_MEM_READ)
- {
- if (sc & IMAGE_SCN_MEM_WRITE)
- dwResult|=PAGE_READWRITE;
- else
- dwResult|=PAGE_READONLY;
- }
- else
- {
- if (sc & IMAGE_SCN_MEM_WRITE)
- dwResult|=PAGE_WRITECOPY;
- else
- dwResult|=PAGE_NOACCESS;
- }
- }
-
- return dwResult;
-}
-
-inline BOOL IsImportByOrdinal(DWORD ImportDescriptor)
-{
- return (ImportDescriptor & IMAGE_ORDINAL_FLAG32)!=0;
-}
-
-
-HMODULE MemLoadLibrary(PBYTE data)
-{
- IMAGE_FILE_HEADER *pFileHeader = NULL;
- IMAGE_OPTIONAL_HEADER *pOptionalHeader = NULL;
- IMAGE_SECTION_HEADER *pSectionHeader = NULL;
- IMAGE_IMPORT_DESCRIPTOR *pImportDscrtr = NULL;
- USHORT e_lfanew = *((USHORT*)(data+0x3c));
- PCHAR ImageBase = NULL;
- PCHAR SectionBase = NULL;
-
- DWORD dwSize, dwOldProt, ImageBaseDelta;
- int i;
-
- pFileHeader = (IMAGE_FILE_HEADER *)(data+e_lfanew+4);
- pOptionalHeader = (IMAGE_OPTIONAL_HEADER *)(data+e_lfanew+4+sizeof(IMAGE_FILE_HEADER));
- if (pOptionalHeader->Magic!=IMAGE_NT_OPTIONAL_HDR32_MAGIC)
- return NULL;
-
- // Let's try to reserv memory
- ImageBase = (PCHAR)VirtualAlloc(
- (PVOID)pOptionalHeader->ImageBase,
- pOptionalHeader->SizeOfImage,
- MEM_RESERVE,PAGE_NOACCESS);
-
- if (ImageBase==NULL)
- {
- ImageBase=(PCHAR)VirtualAlloc(NULL,
- pOptionalHeader->SizeOfImage,
- MEM_RESERVE,PAGE_NOACCESS);
- if (ImageBase==NULL)
- return NULL;
- }
-
- // copy the header
- SectionBase=(PCHAR)VirtualAlloc(ImageBase,
- pOptionalHeader->SizeOfHeaders,
- MEM_COMMIT,PAGE_READWRITE);
- memcpy(SectionBase,data,pOptionalHeader->SizeOfHeaders);
- // Do headers read-only (to be on the safe side)
- VirtualProtect(SectionBase,pOptionalHeader->SizeOfHeaders,PAGE_READONLY,&dwOldProt);
-
- // find sections ...
- pSectionHeader = (IMAGE_SECTION_HEADER *)(pOptionalHeader+1);
- for (i=0; i<pFileHeader->NumberOfSections; i++)
- {
- SectionBase = (PCHAR)VirtualAlloc(
- ImageBase+pSectionHeader[i].VirtualAddress,
- pSectionHeader[i].Misc.VirtualSize,
- MEM_COMMIT,PAGE_READWRITE);
- if (SectionBase==NULL)
- {
- VirtualFree(ImageBase, 0, MEM_RELEASE);
- return NULL;
- }
- // ... and copy initialization data
- SectionBase = ImageBase+pSectionHeader[i].VirtualAddress;
- dwSize = MIN(pSectionHeader[i].SizeOfRawData,pSectionHeader[i].Misc.VirtualSize);
- memcpy(SectionBase, data+pSectionHeader[i].PointerToRawData,dwSize);
- }
-
- // check addersses
- ImageBaseDelta = (DWORD)ImageBase-pOptionalHeader->ImageBase;
- if (ImageBaseDelta!=0 &&
- pOptionalHeader->DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC].VirtualAddress!=0
- )
- {
- IMAGE_BASE_RELOCATION *pBaseReloc = (IMAGE_BASE_RELOCATION *)(ImageBase+
- pOptionalHeader->DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC].VirtualAddress);
- IMAGE_BASE_RELOCATION *pBaseReloc0 = pBaseReloc;
- WORD *wPointer = NULL;
- DWORD dwModCount;
- int i;
-
- while ((DWORD)pBaseReloc0-(DWORD)pBaseReloc < pOptionalHeader->DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC].Size)
- {
- dwModCount = (pBaseReloc0->SizeOfBlock-sizeof(pBaseReloc))/2;
- wPointer = (WORD *)(pBaseReloc+1);
- for (i=0; i<dwModCount; i++, wPointer++)
- if ((*wPointer & 0xf000) !=0)
- {
- PDWORD pdw = (PDWORD)(ImageBase+pBaseReloc0->VirtualAddress+((*wPointer)&0xfff));
- (*pdw)+=ImageBaseDelta;
- }
- pBaseReloc = (IMAGE_BASE_RELOCATION *)wPointer;
- }
- }
- else if (ImageBaseDelta!=0)
- {
- VirtualFree(ImageBase, 0, MEM_RELEASE);
- return NULL;
- }
-
- pImportDscrtr = (IMAGE_IMPORT_DESCRIPTOR *)(ImageBase+
- pOptionalHeader->DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress);
-
- for (;pImportDscrtr->Name!=0; pImportDscrtr++)
- {
- PCHAR pLibName = (PCHAR)(ImageBase+pImportDscrtr->Name);
- PCHAR pImortName = NULL;
- HMODULE hLibModule = LoadLibrary(pLibName);
- DWORD *pImport = NULL,
- *pAddress = NULL;
- DWORD ProcAddress;
-
- pAddress=(DWORD *)(ImageBase+pImportDscrtr->/*Original*/FirstThunk);
- if (pImportDscrtr->TimeDateStamp==0)
- pImport=(DWORD *)(ImageBase+pImportDscrtr->FirstThunk);
- else
- pImport=(DWORD *)(ImageBase+pImportDscrtr->OriginalFirstThunk);
- for (i=0; pImport[i]!=0; i++)
- {
- if (IsImportByOrdinal(pImport[i]))
- ProcAddress=(DWORD)GetProcAddress(hLibModule, (PCHAR)(pImport[i]&0xFFFF));
- else // import by name
- {
- pImortName=(PCHAR)(ImageBase+(pImport[i])+2);
- ProcAddress=(DWORD)GetProcAddress(hLibModule, pImortName);
- }
- pAddress[i]=ProcAddress;
- }
- }
-
- // set section protection
- for (i=0; i<pFileHeader->NumberOfSections; i++)
- VirtualProtect((PVOID)(ImageBase+pSectionHeader[i].VirtualAddress),
- pSectionHeader[i].Misc.VirtualSize,
- GetSectionProtection(pSectionHeader[i].Characteristics),
- &dwOldProt);
-
- // call DLLMain
- if (pOptionalHeader->AddressOfEntryPoint!=0)
- {
- DLLMAIN dllMain=(DLLMAIN)(ImageBase+pOptionalHeader->AddressOfEntryPoint);
- if (!dllMain((HMODULE)ImageBase, DLL_PROCESS_ATTACH, NULL))
- {
- VirtualFree(ImageBase, 0, MEM_RELEASE);
- return NULL;
- }
- }
-
- return (HMODULE)ImageBase;
-}
-
-
-BOOL MemFreeLibrary(HMODULE hDll)
-{
- PIMAGE_DOS_HEADER pDosHeader = NULL;
- PIMAGE_FILE_HEADER pFileHeader = NULL;
- PIMAGE_OPTIONAL_HEADER pOptionalHeader = NULL;
-
- pDosHeader=(PIMAGE_DOS_HEADER)hDll;
- pFileHeader=(PIMAGE_FILE_HEADER)(((PBYTE)hDll)+pDosHeader->e_lfanew+4);
- pOptionalHeader=(PIMAGE_OPTIONAL_HEADER)(pFileHeader+1);
-
-// Call to DllMain
- if (pOptionalHeader->AddressOfEntryPoint!=0)
- {
- DLLMAIN dllMain=(DLLMAIN)((PBYTE)hDll+pOptionalHeader->AddressOfEntryPoint);
- dllMain(hDll, DLL_PROCESS_DETACH, NULL);
- }
-// free loaded librares
- PIMAGE_IMPORT_DESCRIPTOR pImportDscrtr = (IMAGE_IMPORT_DESCRIPTOR *)((PBYTE)hDll+
- pOptionalHeader->DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress);
- for (;pImportDscrtr->Name!=0; pImportDscrtr++)
- {
- PCHAR pLibName = (PCHAR)((PBYTE)hDll+pImportDscrtr->Name);
- HMODULE hLib = GetModuleHandle(pLibName);
- FreeLibrary(hLib);
- }
-
- return VirtualFree((PVOID)hDll, 0, MEM_RELEASE);
-}
-
-FARPROC MemGetProcAddress(HMODULE hDll, LPCTSTR fname)
-{
- PIMAGE_DOS_HEADER pDosHeader = NULL;
- PIMAGE_FILE_HEADER pFileHeader = NULL;
- PIMAGE_OPTIONAL_HEADER pOptionalHeader = NULL;
-
- pDosHeader=(PIMAGE_DOS_HEADER)hDll;
- pFileHeader=(PIMAGE_FILE_HEADER)(((PBYTE)hDll)+pDosHeader->e_lfanew+4);
- pOptionalHeader=(PIMAGE_OPTIONAL_HEADER)(pFileHeader+1);
-
- DWORD dwExpRVA = pOptionalHeader->DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress;
- PBYTE pb = (PBYTE)hDll;
- PIMAGE_EXPORT_DIRECTORY pExportDir=(PIMAGE_EXPORT_DIRECTORY)(pb+dwExpRVA);
- PDWORD pNamesRVA=(PDWORD)(pb+pExportDir->AddressOfNames);
- PDWORD pFuncRVA=(PDWORD)(pb+pExportDir->AddressOfFunctions);
- PWORD ord=(PWORD)(pb+pExportDir->AddressOfNameOrdinals);
-
- DWORD dwFunc=pExportDir->NumberOfNames;
- for (int i=0; i<dwFunc; i++)
- {
- PCHAR name =((PCHAR)(pb+pNamesRVA[i]));
- if (0==strcmp(fname, name))
- return (FARPROC)(pb+pFuncRVA[ord[i]]);
- }
-
- return NULL;
-}
-
-#pragma warning (pop)
-
-#endif
|