/* $Id: pefile.cpp,v 1.10 2000年10月06日 11:04:01 sandervl Exp $ */
/*
 * PE2LX PE utility functions
 *
 * Project Odin Software License can be found in LICENSE.TXT
 *
 */
#define INCL_BASE
#include <os2wrap.h>	//Odin32 OS/2 api wrappers
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <win32type.h>
#include <pefile.h>
#include <misc.h>
#define DBG_LOCALLOG	DBG_pefile
#include "dbglocal.h"
//******************************************************************************
//******************************************************************************
char *UnicodeToFixedAsciiString(int length, WCHAR *NameString)
{
static char asciistring[256];
int i;
 if(length>= 255)	length = 255;
 for(i=0;i<length;i++) { asciistring[i] = NameString[i] & 0xFF; } asciistring[length] = 0; return(asciistring); } //****************************************************************************** //****************************************************************************** BOOL GetPEFileHeader (LPVOID lpFile, PIMAGE_FILE_HEADER pHeader) { if(*(USHORT *)lpFile == IMAGE_DOS_SIGNATURE && *(DWORD *)PE_HEADER (lpFile) == IMAGE_NT_SIGNATURE) { memcpy ((LPVOID)pHeader, PEHEADEROFF (lpFile), sizeof (IMAGE_FILE_HEADER)); return TRUE; } else return FALSE; } //****************************************************************************** //****************************************************************************** BOOL GetPEOptionalHeader (LPVOID lpFile, PIMAGE_OPTIONAL_HEADER pHeader) { if(*(USHORT *)lpFile == IMAGE_DOS_SIGNATURE && *(DWORD *)PE_HEADER (lpFile) == IMAGE_NT_SIGNATURE) { memcpy ((LPVOID)pHeader, OPTHEADEROFF (lpFile), sizeof (IMAGE_OPTIONAL_HEADER)); return TRUE; } else return FALSE; } //****************************************************************************** //****************************************************************************** LPVOID ImageDirectoryOffset(LPVOID lpFile, DWORD dwIMAGE_DIRECTORY) { PIMAGE_OPTIONAL_HEADER poh = (PIMAGE_OPTIONAL_HEADER)OPTHEADEROFF (lpFile); IMAGE_SECTION_HEADER sh; if (dwIMAGE_DIRECTORY>= poh->NumberOfRvaAndSizes)
	return NULL;
 if(GetSectionHdrByRVA(lpFile, &sh, poh->DataDirectory[dwIMAGE_DIRECTORY].VirtualAddress) == FALSE)
 {
	return NULL;
 }
 return (LPVOID)((ULONG)lpFile + poh->DataDirectory[dwIMAGE_DIRECTORY].VirtualAddress); 
}
//******************************************************************************
//******************************************************************************
DWORD ImageDirectorySize(LPVOID lpFile, DWORD dwIMAGE_DIRECTORY)
{
 PIMAGE_OPTIONAL_HEADER poh = (PIMAGE_OPTIONAL_HEADER)OPTHEADEROFF (lpFile);
 IMAGE_SECTION_HEADER sh;
 if (dwIMAGE_DIRECTORY>= poh->NumberOfRvaAndSizes)
	return 0;
 if(GetSectionHdrByRVA(lpFile, &sh, poh->DataDirectory[dwIMAGE_DIRECTORY].VirtualAddress) == FALSE)
 {
	return 0;
 }
 return poh->DataDirectory[dwIMAGE_DIRECTORY].Size;
}
//******************************************************************************
//******************************************************************************
BOOL GetSectionHdrByImageDir(LPVOID lpFile, DWORD dwIMAGE_DIRECTORY, PIMAGE_SECTION_HEADER pSect)
{
 PIMAGE_OPTIONAL_HEADER poh = (PIMAGE_OPTIONAL_HEADER)OPTHEADEROFF (lpFile);
 if (dwIMAGE_DIRECTORY>= poh->NumberOfRvaAndSizes)
	return FALSE;
 return GetSectionHdrByRVA(lpFile, pSect, poh->DataDirectory[dwIMAGE_DIRECTORY].VirtualAddress);
} 
//******************************************************************************
//******************************************************************************
BOOL IsSectionType(LPVOID lpFile, PIMAGE_SECTION_HEADER psh, DWORD dwIMAGE_DIRECTORY)
{
 PIMAGE_OPTIONAL_HEADER poh = (PIMAGE_OPTIONAL_HEADER)OPTHEADEROFF (lpFile);
 int 	 i = 0;
 DWORD ImageDirVA;
 ImageDirVA = poh->DataDirectory[dwIMAGE_DIRECTORY].VirtualAddress;
 if(psh->VirtualAddress <= ImageDirVA && psh->VirtualAddress + max(psh->Misc.VirtualSize,psh->SizeOfRawData)> ImageDirVA)
 {
	return TRUE;
 }
 return FALSE;
}
//******************************************************************************
//******************************************************************************
BOOL GetSectionHdrByName (LPVOID lpFile, IMAGE_SECTION_HEADER *sh, char *szSection)
{
 PIMAGE_SECTION_HEADER psh;
 int nSections = NR_SECTIONS (lpFile);
 int i;
 if((psh = (PIMAGE_SECTION_HEADER)SECTIONHDROFF (lpFile)) != NULL) 
 {
	for(i=0; i<nsections; i++) { if(strcmp (psh->Name, szSection) == 0) 
 {
		 memcpy ((LPVOID)sh, (LPVOID)psh, sizeof (IMAGE_SECTION_HEADER));
		 return TRUE;
 	 }
	 else psh++;
 }
 }
 return FALSE;
}
//******************************************************************************
//******************************************************************************
BOOL GetSectionHdrByType (LPVOID lpFile, IMAGE_SECTION_HEADER *sh, int type)
{
 PIMAGE_SECTION_HEADER psh;
 int nSections = NR_SECTIONS (lpFile);
 int i;
 if((psh = (PIMAGE_SECTION_HEADER)SECTIONHDROFF (lpFile)) != NULL) 
 {
	for(i=0; i<nsections; i++) { if(psh->Characteristics & type) 
 {
		 memcpy ((LPVOID)sh, (LPVOID)psh, sizeof (IMAGE_SECTION_HEADER));
		 return TRUE;
 	 }
	 else psh++;
 }
 }
 return FALSE;
}
/** Get Section Header for the given RVA - returns boolean according to the result
 *
 * knut [Jul 22 1998 2:53am]
 */
BOOL GetSectionHdrByRVA (LPVOID lpFile, IMAGE_SECTION_HEADER *sh, ULONG rva)
{
	PIMAGE_SECTION_HEADER psh;
	int nSections = NR_SECTIONS (lpFile);
	int i;
	if ((psh = (PIMAGE_SECTION_HEADER)SECTIONHDROFF (lpFile)) != NULL)
 {
		for (i=0; i<nsections; i++) { if (rva>= psh->VirtualAddress && rva < psh->VirtualAddress + max(psh->Misc.VirtualSize,psh->SizeOfRawData))
			{
				memcpy (sh, psh, sizeof(IMAGE_SECTION_HEADER));
				return TRUE;
			}
			else 	psh++;
		}
	}
	return FALSE;
}
//******************************************************************************
//******************************************************************************
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