634 lines
15 KiB
C
634 lines
15 KiB
C
#include "pefile.h"
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HANDLE hDll;
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/*
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BOOL WINAPI DLLEntry (
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HANDLE hModule,
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DWORD dwFunction,
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LPVOID lpNot)
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{
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hDll = hModule;
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return TRUE;
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}
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*/
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/* copy dos header information to structure */
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BOOL WINAPI GetDosHeader (
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LPVOID lpFile,
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PIMAGE_DOS_HEADER pHeader)
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{
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/* dos header rpresents first structure of bytes in file */
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if (*(USHORT *)lpFile == IMAGE_DOS_SIGNATURE)
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CopyMemory ((LPVOID)pHeader, lpFile, sizeof (IMAGE_DOS_HEADER));
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else
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return FALSE;
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return TRUE;
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}
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/* return file signature */
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DWORD WINAPI ImageFileType (
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LPVOID lpFile)
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{
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/* dos file signature comes first */
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if (*(USHORT *)lpFile == IMAGE_DOS_SIGNATURE)
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{
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/* determine location of PE File header from dos header */
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if (LOWORD (*(DWORD *)NTSIGNATURE (lpFile)) == IMAGE_OS2_SIGNATURE ||
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LOWORD (*(DWORD *)NTSIGNATURE (lpFile)) == IMAGE_OS2_SIGNATURE_LE)
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return (DWORD)LOWORD(*(DWORD *)NTSIGNATURE (lpFile));
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else if (*(DWORD *)NTSIGNATURE (lpFile) == IMAGE_NT_SIGNATURE)
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return IMAGE_NT_SIGNATURE;
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else
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return IMAGE_DOS_SIGNATURE;
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}
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else
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/* unknown file type */
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return 0;
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}
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/* copy file header information to structure */
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BOOL WINAPI GetPEFileHeader (
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LPVOID lpFile,
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PIMAGE_FILE_HEADER pHeader)
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{
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/* file header follows dos header */
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if (ImageFileType (lpFile) == IMAGE_NT_SIGNATURE)
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CopyMemory ((LPVOID)pHeader, PEFHDROFFSET (lpFile), sizeof (IMAGE_FILE_HEADER));
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else
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return FALSE;
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return TRUE;
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}
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/* copy optional header info to structure */
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BOOL WINAPI GetPEOptionalHeader (
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LPVOID lpFile,
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PIMAGE_OPTIONAL_HEADER pHeader)
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{
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/* optional header follows file header and dos header */
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if (ImageFileType (lpFile) == IMAGE_NT_SIGNATURE)
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CopyMemory ((LPVOID)pHeader, OPTHDROFFSET (lpFile), sizeof (IMAGE_OPTIONAL_HEADER));
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else
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return FALSE;
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return TRUE;
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}
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/* function returns the entry point for an exe module lpFile must
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be a memory mapped file pointer to the beginning of the image file */
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LONG_PTR WINAPI GetModuleEntryPoint (
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LPVOID lpFile)
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{
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PIMAGE_OPTIONAL_HEADER poh = (PIMAGE_OPTIONAL_HEADER)OPTHDROFFSET (lpFile);
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if (poh != NULL)
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return (LONG_PTR)(poh->AddressOfEntryPoint);
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else
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return 0L;
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}
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/* return the total number of sections in the module */
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int WINAPI NumOfSections (
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LPVOID lpFile)
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{
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/* number os sections is indicated in file header */
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return ((int)((PIMAGE_FILE_HEADER)PEFHDROFFSET (lpFile))->NumberOfSections);
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}
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/* retrieve entry point */
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LPVOID WINAPI GetImageBase (
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LPVOID lpFile)
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{
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PIMAGE_OPTIONAL_HEADER poh = (PIMAGE_OPTIONAL_HEADER)OPTHDROFFSET (lpFile);
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if (poh != NULL)
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return (LPVOID)(poh->ImageBase);
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else
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return NULL;
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}
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/* return offset to specified IMAGE_DIRECTORY entry */
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LPVOID WINAPI ImageDirectoryOffset (
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LPVOID lpFile,
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DWORD dwIMAGE_DIRECTORY)
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{
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PIMAGE_OPTIONAL_HEADER poh = (PIMAGE_OPTIONAL_HEADER)OPTHDROFFSET (lpFile);
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PIMAGE_SECTION_HEADER psh = (PIMAGE_SECTION_HEADER)SECHDROFFSET (lpFile);
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int nSections = NumOfSections (lpFile);
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int i = 0;
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LONG_PTR VAImageDir;
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/* must be 0 thru (NumberOfRvaAndSizes-1) */
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if (dwIMAGE_DIRECTORY >= poh->NumberOfRvaAndSizes)
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return NULL;
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/* locate specific image directory's relative virtual address */
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VAImageDir = (LONG_PTR)poh->DataDirectory[dwIMAGE_DIRECTORY].VirtualAddress;
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/* locate section containing image directory */
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while (i++<nSections)
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{
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if (psh->VirtualAddress <= (DWORD)VAImageDir &&
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psh->VirtualAddress + psh->SizeOfRawData > (DWORD)VAImageDir)
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break;
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psh++;
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}
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if (i > nSections)
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return NULL;
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/* return image import directory offset */
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return (LPVOID)(((LONG_PTR)lpFile + (LONG_PTR)VAImageDir - psh->VirtualAddress) +
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(LONG_PTR)psh->PointerToRawData);
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}
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/* function retrieve names of all the sections in the file */
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int WINAPI GetSectionNames (
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LPVOID lpFile,
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HANDLE hHeap,
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char **pszSections)
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{
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int nSections = NumOfSections (lpFile);
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int i, nCnt = 0;
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PIMAGE_SECTION_HEADER psh;
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char *ps;
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if (ImageFileType (lpFile) != IMAGE_NT_SIGNATURE ||
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(psh = (PIMAGE_SECTION_HEADER)SECHDROFFSET (lpFile)) == NULL)
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return 0;
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/* count the number of chars used in the section names */
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for (i=0; i<nSections; i++)
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nCnt += strlen (psh[i].Name) + 1;
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/* allocate space for all section names from heap */
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ps = *pszSections = (char *)HeapAlloc (hHeap, HEAP_ZERO_MEMORY, nCnt);
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for (i=0; i<nSections; i++)
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{
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strcpy (ps, psh[i].Name);
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ps += strlen (psh[i].Name) + 1;
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}
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return nCnt;
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}
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/* function gets the function header for a section identified by name */
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BOOL WINAPI GetSectionHdrByName (
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LPVOID lpFile,
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IMAGE_SECTION_HEADER *sh,
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char *szSection)
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{
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PIMAGE_SECTION_HEADER psh;
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int nSections = NumOfSections (lpFile);
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int i;
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if ((psh = (PIMAGE_SECTION_HEADER)SECHDROFFSET (lpFile)) != NULL)
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{
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/* find the section by name */
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for (i=0; i<nSections; i++)
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{
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if (!strcmp (psh->Name, szSection))
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{
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/* copy data to header */
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CopyMemory ((LPVOID)sh, (LPVOID)psh, sizeof (IMAGE_SECTION_HEADER));
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return TRUE;
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}
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else
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psh++;
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}
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}
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return FALSE;
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}
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/* get import modules names separated by null terminators, return module count */
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int WINAPI GetImportModuleNames (
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LPVOID lpFile,
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// HANDLE hHeap,
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char* SectionName,
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char **pszModules)
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{
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PIMAGE_IMPORT_MODULE_DIRECTORY pid = (PIMAGE_IMPORT_MODULE_DIRECTORY)
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ImageDirectoryOffset (lpFile, IMAGE_DIRECTORY_ENTRY_IMPORT);
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IMAGE_SECTION_HEADER idsh;
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BYTE *pData = (BYTE *)pid;
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int nCnt = 0, nSize = 0, i;
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char *pModule[1024]; /* hardcoded maximum number of modules?? */
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char *psz;
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/* locate section header for ".idata" section */
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if (!GetSectionHdrByName (lpFile, &idsh, SectionName /*".idata" "INIT"*/))
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return 0;
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/* extract all import modules */
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while (pid->dwRVAModuleName)
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{
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/* allocate temporary buffer for absolute string offsets */
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pModule[nCnt] = (char *)(pData + (pid->dwRVAModuleName-idsh.VirtualAddress));
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nSize += strlen (pModule[nCnt]) + 1;
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/* increment to the next import directory entry */
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pid++;
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nCnt++;
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}
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/* copy all strings to one chunk of heap memory */
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*pszModules = HeapAlloc (GetProcessHeap(), HEAP_ZERO_MEMORY, nSize);
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psz = *pszModules;
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for (i=0; i<nCnt; i++)
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{
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strcpy (psz, pModule[i]);
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psz += strlen (psz) + 1;
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}
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return nCnt;
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}
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/* get import module function names separated by null terminators, return function count */
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int WINAPI GetImportFunctionNamesByModule (
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LPVOID lpFile,
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// HANDLE hHeap,
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char* SectionName,
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char *pszModule,
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char **pszFunctions)
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{
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PIMAGE_IMPORT_MODULE_DIRECTORY pid = (PIMAGE_IMPORT_MODULE_DIRECTORY)
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ImageDirectoryOffset (lpFile, IMAGE_DIRECTORY_ENTRY_IMPORT);
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IMAGE_SECTION_HEADER idsh;
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LONG_PTR dwBase;
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int nCnt = 0, nSize = 0;
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DWORD dwFunction;
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char *psz;
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/* locate section header for ".idata" section */
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if (!GetSectionHdrByName (lpFile, &idsh, SectionName/*".idata" "INIT"*/))
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return 0;
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dwBase = ((LONG_PTR)pid - idsh.VirtualAddress);
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/* find module's pid */
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while (pid->dwRVAModuleName &&
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strcmp (pszModule, (char *)(pid->dwRVAModuleName+dwBase)))
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pid++;
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/* exit if the module is not found */
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if (!pid->dwRVAModuleName)
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return 0;
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/* count number of function names and length of strings */
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dwFunction = pid->dwRVAFunctionNameList;
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while (dwFunction &&
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*(DWORD *)(dwFunction + dwBase) &&
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*(char *)((*(DWORD *)(dwFunction + dwBase)) + dwBase+2))
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{
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nSize += strlen ((char *)((*(DWORD *)(dwFunction + dwBase)) + dwBase+2)) + 1;
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dwFunction += 4;
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nCnt++;
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}
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/* allocate memory off heap for function names */
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*pszFunctions = HeapAlloc (GetProcessHeap(), HEAP_ZERO_MEMORY, nSize);
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psz = *pszFunctions;
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/* copy function names to mempry pointer */
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dwFunction = pid->dwRVAFunctionNameList;
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while (dwFunction &&
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*(DWORD *)(dwFunction + dwBase) &&
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*((char *)((*(DWORD *)(dwFunction + dwBase)) + dwBase+2)))
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{
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strcpy (psz, (char *)((*(DWORD *)(dwFunction + dwBase)) + dwBase+2));
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psz += strlen ((char *)((*(DWORD *)(dwFunction + dwBase)) + dwBase+2)) + 1;
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dwFunction += 4;
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}
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return nCnt;
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}
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/* get exported function names separated by null terminators, return count of functions */
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int WINAPI GetExportFunctionNames (
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LPVOID lpFile,
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HANDLE hHeap,
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char **pszFunctions)
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{
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IMAGE_SECTION_HEADER sh;
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PIMAGE_EXPORT_DIRECTORY ped;
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char *pNames, *pCnt;
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int i, nCnt;
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/* get section header and pointer to data directory for .edata section */
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if ((ped = (PIMAGE_EXPORT_DIRECTORY)ImageDirectoryOffset
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(lpFile, IMAGE_DIRECTORY_ENTRY_EXPORT)) == NULL)
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return 0;
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GetSectionHdrByName (lpFile, &sh, ".edata");
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/* determine the offset of the export function names */
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pNames = (char *)(*(int *)((int)ped->AddressOfNames -
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(int)sh.VirtualAddress +
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(int)sh.PointerToRawData +
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(LONG_PTR)lpFile) -
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(int)sh.VirtualAddress +
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(int)sh.PointerToRawData +
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(LONG_PTR)lpFile);
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/* figure out how much memory to allocate for all strings */
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pCnt = pNames;
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for (i=0; i<(int)ped->NumberOfNames; i++)
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while (*pCnt++);
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nCnt = (int)(pCnt - pNames);
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/* allocate memory off heap for function names */
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*pszFunctions = HeapAlloc (hHeap, HEAP_ZERO_MEMORY, nCnt);
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/* copy all string to buffer */
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CopyMemory ((LPVOID)*pszFunctions, (LPVOID)pNames, nCnt);
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return nCnt;
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}
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/* return the number of exported functions in the module */
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int WINAPI GetNumberOfExportedFunctions (
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LPVOID lpFile)
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{
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PIMAGE_EXPORT_DIRECTORY ped;
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/* get section header and pointer to data directory for .edata section */
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if ((ped = (PIMAGE_EXPORT_DIRECTORY)ImageDirectoryOffset
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(lpFile, IMAGE_DIRECTORY_ENTRY_EXPORT)) == NULL)
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return 0;
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else
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return (int)ped->NumberOfNames;
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}
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/* return a pointer to the list of function entry points */
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LPVOID WINAPI GetExportFunctionEntryPoints (
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LPVOID lpFile)
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{
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IMAGE_SECTION_HEADER sh;
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PIMAGE_EXPORT_DIRECTORY ped;
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/* get section header and pointer to data directory for .edata section */
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if ((ped = (PIMAGE_EXPORT_DIRECTORY)ImageDirectoryOffset
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(lpFile, IMAGE_DIRECTORY_ENTRY_EXPORT)) == NULL)
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return NULL;
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GetSectionHdrByName (lpFile, &sh, ".edata");
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/* determine the offset of the export function entry points */
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return (LPVOID) ((int)ped->AddressOfFunctions -
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(int)sh.VirtualAddress +
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(int)sh.PointerToRawData +
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(LONG_PTR)lpFile);
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}
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/* return a pointer to the list of function ordinals */
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LPVOID WINAPI GetExportFunctionOrdinals (
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LPVOID lpFile)
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{
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IMAGE_SECTION_HEADER sh;
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PIMAGE_EXPORT_DIRECTORY ped;
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/* get section header and pointer to data directory for .edata section */
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if ((ped = (PIMAGE_EXPORT_DIRECTORY)ImageDirectoryOffset
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(lpFile, IMAGE_DIRECTORY_ENTRY_EXPORT)) == NULL)
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return NULL;
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GetSectionHdrByName (lpFile, &sh, ".edata");
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/* determine the offset of the export function entry points */
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return (LPVOID) ((int)ped->AddressOfNameOrdinals -
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(int)sh.VirtualAddress +
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(int)sh.PointerToRawData +
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(LONG_PTR)lpFile);
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}
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/* determine the total number of resources in the section */
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int WINAPI GetNumberOfResources (
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LPVOID lpFile)
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{
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PIMAGE_RESOURCE_DIRECTORY prdRoot, prdType;
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PIMAGE_RESOURCE_DIRECTORY_ENTRY prde;
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int nCnt=0, i;
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/* get root directory of resource tree */
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if ((prdRoot = (PIMAGE_RESOURCE_DIRECTORY)ImageDirectoryOffset
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(lpFile, IMAGE_DIRECTORY_ENTRY_RESOURCE)) == NULL)
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return 0;
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/* set pointer to first resource type entry */
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prde = (PIMAGE_RESOURCE_DIRECTORY_ENTRY)((LONG_PTR)prdRoot + sizeof (IMAGE_RESOURCE_DIRECTORY));
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/* loop through all resource directory entry types */
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for (i=0; i<prdRoot->NumberOfIdEntries; i++)
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{
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/* locate directory or each resource type */
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prdType = (PIMAGE_RESOURCE_DIRECTORY)((LONG_PTR)prdRoot + (LONG_PTR)prde->OffsetToData);
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/* mask off most significant bit of the data offset */
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prdType = (PIMAGE_RESOURCE_DIRECTORY)((LONG_PTR)prdType ^ 0x80000000);
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/* increment count of name'd and ID'd resources in directory */
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nCnt += prdType->NumberOfNamedEntries + prdType->NumberOfIdEntries;
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/* increment to next entry */
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prde++;
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}
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return nCnt;
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}
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/* name each type of resource in the section */
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int WINAPI GetListOfResourceTypes (
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LPVOID lpFile,
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HANDLE hHeap,
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char **pszResTypes)
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{
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PIMAGE_RESOURCE_DIRECTORY prdRoot;
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PIMAGE_RESOURCE_DIRECTORY_ENTRY prde;
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char *pMem;
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int nCnt, i;
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/* get root directory of resource tree */
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if ((prdRoot = (PIMAGE_RESOURCE_DIRECTORY)ImageDirectoryOffset
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(lpFile, IMAGE_DIRECTORY_ENTRY_RESOURCE)) == NULL)
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return 0;
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/* allocate enuff space from heap to cover all types */
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nCnt = prdRoot->NumberOfIdEntries * (MAXRESOURCENAME + 1);
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*pszResTypes = (char *)HeapAlloc (hHeap,
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HEAP_ZERO_MEMORY,
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nCnt);
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if ((pMem = *pszResTypes) == NULL)
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return 0;
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/* set pointer to first resource type entry */
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prde = (PIMAGE_RESOURCE_DIRECTORY_ENTRY)((LONG_PTR)prdRoot + sizeof (IMAGE_RESOURCE_DIRECTORY));
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/* loop through all resource directory entry types */
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for (i=0; i<prdRoot->NumberOfIdEntries; i++)
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{
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if (LoadString (hDll, prde->Name, pMem, MAXRESOURCENAME))
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pMem += strlen (pMem) + 1;
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prde++;
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}
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return nCnt;
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}
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/* function indicates whether debug info has been stripped from file */
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BOOL WINAPI IsDebugInfoStripped (
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LPVOID lpFile)
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{
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PIMAGE_FILE_HEADER pfh;
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pfh = (PIMAGE_FILE_HEADER)PEFHDROFFSET (lpFile);
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return (pfh->Characteristics & IMAGE_FILE_DEBUG_STRIPPED);
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}
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/* retrieve the module name from the debug misc. structure */
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int WINAPI RetrieveModuleName (
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LPVOID lpFile,
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HANDLE hHeap,
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|
char **pszModule)
|
|
{
|
|
|
|
PIMAGE_DEBUG_DIRECTORY pdd;
|
|
PIMAGE_DEBUG_MISC pdm = NULL;
|
|
int nCnt;
|
|
|
|
if (!(pdd = (PIMAGE_DEBUG_DIRECTORY)ImageDirectoryOffset (lpFile, IMAGE_DIRECTORY_ENTRY_DEBUG)))
|
|
return 0;
|
|
|
|
while (pdd->SizeOfData)
|
|
{
|
|
if (pdd->Type == IMAGE_DEBUG_TYPE_MISC)
|
|
{
|
|
pdm = (PIMAGE_DEBUG_MISC)((DWORD)pdd->PointerToRawData + (LONG_PTR)lpFile);
|
|
|
|
*pszModule = (char *)HeapAlloc (hHeap,
|
|
HEAP_ZERO_MEMORY,
|
|
(nCnt = (lstrlen (pdm->Data)*(pdm->Unicode?2:1)))+1);
|
|
CopyMemory (*pszModule, pdm->Data, nCnt);
|
|
|
|
break;
|
|
}
|
|
|
|
pdd ++;
|
|
}
|
|
|
|
if (pdm != NULL)
|
|
return nCnt;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* determine if this is a valid debug file */
|
|
BOOL WINAPI IsDebugFile (
|
|
LPVOID lpFile)
|
|
{
|
|
PIMAGE_SEPARATE_DEBUG_HEADER psdh;
|
|
|
|
psdh = (PIMAGE_SEPARATE_DEBUG_HEADER)lpFile;
|
|
|
|
return (psdh->Signature == IMAGE_SEPARATE_DEBUG_SIGNATURE);
|
|
}
|
|
|
|
|
|
|
|
|
|
/* copy separate debug header structure from debug file */
|
|
BOOL WINAPI GetSeparateDebugHeader (
|
|
LPVOID lpFile,
|
|
PIMAGE_SEPARATE_DEBUG_HEADER psdh)
|
|
{
|
|
PIMAGE_SEPARATE_DEBUG_HEADER pdh;
|
|
|
|
pdh = (PIMAGE_SEPARATE_DEBUG_HEADER)lpFile;
|
|
|
|
if (pdh->Signature == IMAGE_SEPARATE_DEBUG_SIGNATURE)
|
|
{
|
|
CopyMemory ((LPVOID)psdh, (LPVOID)pdh, sizeof (IMAGE_SEPARATE_DEBUG_HEADER));
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|