diff options
Diffstat (limited to 'win32/tools/tiny_impdef.c')
| -rw-r--r-- | win32/tools/tiny_impdef.c | 397 |
1 files changed, 119 insertions, 278 deletions
diff --git a/win32/tools/tiny_impdef.c b/win32/tools/tiny_impdef.c index 040c53a..53fb255 100644 --- a/win32/tools/tiny_impdef.c +++ b/win32/tools/tiny_impdef.c @@ -23,201 +23,92 @@ #define WIN32_LEAN_AND_MEAN #include <windows.h> #include <stdio.h> +#include <malloc.h> +#include "../../config.h" -/* Offset to PE file signature */ -#define NTSIGNATURE(a) ((LPVOID)((BYTE *)a + \ - ((PIMAGE_DOS_HEADER)a)->e_lfanew)) - -/* MS-OS header identifies the NT PEFile signature dword; - the PEFILE header exists just after that dword. */ -#define PEFHDROFFSET(a) ((LPVOID)((BYTE *)a + \ - ((PIMAGE_DOS_HEADER)a)->e_lfanew + \ - SIZE_OF_NT_SIGNATURE)) - -/* PE optional header is immediately after PEFile header. */ -#define OPTHDROFFSET(a) ((LPVOID)((BYTE *)a + \ - ((PIMAGE_DOS_HEADER)a)->e_lfanew + \ - SIZE_OF_NT_SIGNATURE + \ - sizeof (IMAGE_FILE_HEADER))) - -/* Section headers are immediately after PE optional header. */ -#define SECHDROFFSET(a) ((LPVOID)((BYTE *)a + \ - ((PIMAGE_DOS_HEADER)a)->e_lfanew + \ - SIZE_OF_NT_SIGNATURE + \ - sizeof (IMAGE_FILE_HEADER) + \ - sizeof (IMAGE_OPTIONAL_HEADER))) - - -#define SIZE_OF_NT_SIGNATURE 4 - -/* -------------------------------------------------------------- */ - -int WINAPI NumOfSections ( - LPVOID lpFile) +int read_mem(FILE *fp, unsigned offset, void *buffer, unsigned len) { - /* Number of sections is indicated in file header. */ - return (int) - ((PIMAGE_FILE_HEADER) - PEFHDROFFSET(lpFile))->NumberOfSections; + fseek(fp, offset, 0); + return len == fread(buffer, 1, len, fp); } - -/* -------------------------------------------------------------- */ - -LPVOID WINAPI ImageDirectoryOffset ( - LPVOID lpFile, - DWORD dwIMAGE_DIRECTORY) +char *get_export_names(FILE *fp) { - PIMAGE_OPTIONAL_HEADER poh; - PIMAGE_SECTION_HEADER psh; - int nSections = NumOfSections (lpFile); - int i = 0; - LPVOID VAImageDir; - - /* Retrieve offsets to optional and section headers. */ - poh = (PIMAGE_OPTIONAL_HEADER)OPTHDROFFSET (lpFile); - psh = (PIMAGE_SECTION_HEADER)SECHDROFFSET (lpFile); - - /* Must be 0 thru (NumberOfRvaAndSizes-1). */ - if (dwIMAGE_DIRECTORY >= poh->NumberOfRvaAndSizes) - return NULL; - - /* Locate image directory's relative virtual address. */ - VAImageDir = (LPVOID)poh->DataDirectory[dwIMAGE_DIRECTORY].VirtualAddress; - - /* Locate section containing image directory. */ - while (i++<nSections) - { - if (psh->VirtualAddress <= (DWORD)VAImageDir - && psh->VirtualAddress + psh->SizeOfRawData > (DWORD)VAImageDir) - break; - psh++; - } + int l, i, n, n0; + char *p; - if (i > nSections) - return NULL; + IMAGE_SECTION_HEADER ish; + IMAGE_EXPORT_DIRECTORY ied; + IMAGE_DOS_HEADER dh; + IMAGE_FILE_HEADER ih; + DWORD sig, ref, addr, ptr, namep; +#ifdef TCC_TARGET_X86_64 + IMAGE_OPTIONAL_HEADER64 oh; + const int MACHINE = 0x8664; +#else + IMAGE_OPTIONAL_HEADER32 oh; + const int MACHINE = 0x014C; +#endif + int pef_hdroffset, opt_hdroffset, sec_hdroffset; - /* Return image import directory offset. */ - return (LPVOID)(((int)lpFile + - (int)VAImageDir - psh->VirtualAddress) + - (int)psh->PointerToRawData); -} + n = n0 = 0; + p = NULL; -/* -------------------------------------------------------------- */ + if (!read_mem(fp, 0, &dh, sizeof dh)) + goto the_end; + if (!read_mem(fp, dh.e_lfanew, &sig, sizeof sig)) + goto the_end; + if (sig != 0x00004550) + goto the_end; + pef_hdroffset = dh.e_lfanew + sizeof sig; + if (!read_mem(fp, pef_hdroffset, &ih, sizeof ih)) + goto the_end; + if (MACHINE != ih.Machine) + goto the_end; + opt_hdroffset = pef_hdroffset + sizeof ih; + sec_hdroffset = opt_hdroffset + sizeof oh; + if (!read_mem(fp, opt_hdroffset, &oh, sizeof oh)) + goto the_end; -BOOL WINAPI GetSectionHdrByName ( - LPVOID lpFile, - IMAGE_SECTION_HEADER *sh, - char *szSection) -{ - PIMAGE_SECTION_HEADER psh; - int nSections = NumOfSections (lpFile); - int i; + if (IMAGE_DIRECTORY_ENTRY_EXPORT >= oh.NumberOfRvaAndSizes) + goto the_end; - if ((psh = (PIMAGE_SECTION_HEADER)SECHDROFFSET (lpFile)) != NULL) - { - /* find the section by name */ - for (i=0; i<nSections; i++) - { - if (!strcmp (psh->Name, szSection)) - { - /* copy data to header */ - memcpy ((LPVOID)sh, (LPVOID)psh, sizeof (IMAGE_SECTION_HEADER)); - return TRUE; - } - else - psh++; - } + addr = oh.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress; + //printf("addr: %08x\n", addr); + for (i = 0; i < ih.NumberOfSections; ++i) { + if (!read_mem(fp, sec_hdroffset + i * sizeof ish, &ish, sizeof ish)) + goto the_end; + //printf("vaddr: %08x\n", ish.VirtualAddress); + if (addr >= ish.VirtualAddress && addr < ish.VirtualAddress + ish.SizeOfRawData) + goto found; } - return FALSE; -} - -/* -------------------------------------------------------------- */ + goto the_end; -BOOL WINAPI GetSectionHdrByAddress ( - LPVOID lpFile, - IMAGE_SECTION_HEADER *sh, - DWORD addr) -{ - PIMAGE_SECTION_HEADER psh; - int nSections = NumOfSections (lpFile); - int i; +found: + ref = ish.VirtualAddress - ish.PointerToRawData; + if (!read_mem(fp, addr - ref, &ied, sizeof ied)) + goto the_end; - if ((psh = (PIMAGE_SECTION_HEADER)SECHDROFFSET (lpFile)) != NULL) - { - /* find the section by name */ - for (i=0; i<nSections; i++) - { - if (addr >= psh->VirtualAddress - && addr < psh->VirtualAddress + psh->SizeOfRawData) - { - /* copy data to header */ - memcpy ((LPVOID)sh, (LPVOID)psh, sizeof (IMAGE_SECTION_HEADER)); - return TRUE; + namep = ied.AddressOfNames - ref; + for (i = 0; i < ied.NumberOfNames; ++i) { + if (!read_mem(fp, namep, &ptr, sizeof ptr)) + goto the_end; + namep += sizeof ptr; + for (l = 0;;) { + if (n+1 >= n0) + p = realloc(p, n0 = n0 ? n0 * 2 : 256); + if (!read_mem(fp, ptr - ref + l, p + n, 1) || ++l >= 80) { + free(p), p = NULL; + goto the_end; } - else - psh++; - } - } - return FALSE; -} - -/* -------------------------------------------------------------- */ - -int WINAPI GetExportFunctionNames ( - LPVOID lpFile, - HANDLE hHeap, - char **pszFunctions) -{ - IMAGE_SECTION_HEADER sh; - PIMAGE_EXPORT_DIRECTORY ped; - int *pNames, *pCnt; - char *pSrc, *pDest; - int i, nCnt; - DWORD VAImageDir; - PIMAGE_OPTIONAL_HEADER poh; - char *pOffset; - - /* Get section header and pointer to data directory - for .edata section. */ - if (NULL == (ped = (PIMAGE_EXPORT_DIRECTORY) - ImageDirectoryOffset (lpFile, IMAGE_DIRECTORY_ENTRY_EXPORT))) - return 0; - - poh = (PIMAGE_OPTIONAL_HEADER)OPTHDROFFSET (lpFile); - VAImageDir = poh->DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress; - - if (FALSE == GetSectionHdrByAddress (lpFile, &sh, VAImageDir)) - return 0; - - pOffset = (char *)lpFile + (sh.PointerToRawData - sh.VirtualAddress); - - pNames = (int *)(pOffset + (DWORD)ped->AddressOfNames); - - /* Figure out how much memory to allocate for all strings. */ - nCnt = 1; - for (i=0, pCnt = pNames; i<(int)ped->NumberOfNames; i++) - { - pSrc = (pOffset + *pCnt++); - if (pSrc) - nCnt += strlen(pSrc)+1; - } - - /* Allocate memory off heap for function names. */ - pDest = *pszFunctions = HeapAlloc (hHeap, HEAP_ZERO_MEMORY, nCnt); - - /* Copy all strings to buffer. */ - for (i=0, pCnt = pNames; i<(int)ped->NumberOfNames; i++) - { - pSrc = (pOffset + *pCnt++); - if (pSrc) { - strcpy(pDest, pSrc); - pDest += strlen(pSrc)+1; + if (p[n++] == 0) + break; } } - *pDest = 0; - - return ped->NumberOfNames; + if (p) + p[n] = 0; +the_end: + return p; } /* -------------------------------------------------------------- */ @@ -238,61 +129,49 @@ static char *file_basename(const char *name) int main(int argc, char **argv) { - HANDLE hHeap; - HANDLE hFile; - HANDLE hMapObject; - VOID *pMem; - - int nCnt, ret, n; - char *pNames; + int ret, v, i; char infile[MAX_PATH]; - char buffer[MAX_PATH]; char outfile[MAX_PATH]; - FILE *op; - char *p; - hHeap = NULL; - hFile = NULL; - hMapObject = NULL; - pMem = NULL; + static const char *ext[] = { ".dll", ".exe", NULL }; + const char *file, **pp; + char path[MAX_PATH], *p, *q; + FILE *fp, *op; + infile[0] = 0; outfile[0] = 0; + fp = op = NULL; + v = 0; ret = 1; - for (n = 1; n < argc; ++n) - { - const char *a = argv[n]; + for (i = 1; i < argc; ++i) { + const char *a = argv[i]; if ('-' == a[0]) { - if (0 == strcmp(a, "-o")) { - if (++n == argc) + if (0 == strcmp(a, "-v")) { + v = 1; + } else if (0 == strcmp(a, "-o")) { + if (++i == argc) goto usage; - strcpy(outfile, argv[n]); - } - else + strcpy(outfile, argv[i]); + } else goto usage; - } else if (0 == infile[0]) strcpy(infile, a); else goto usage; } - if (0 == infile[0]) - { + if (0 == infile[0]) { usage: fprintf(stderr, - "tiny_impdef creates an export definition file (.def) from a dll\n" + "tiny_impdef: create export definition file (.def) from a dll\n" "Usage: tiny_impdef library.dll [-o outputfile]\n" ); goto the_end; } - if (SearchPath(NULL, infile, ".dll", sizeof buffer, buffer, NULL)) - strcpy(infile, buffer); - if (0 == outfile[0]) { - char *p; strcpy(outfile, file_basename(infile)); p = strrchr(outfile, '.'); if (NULL == p) @@ -300,93 +179,55 @@ usage: strcpy(p, ".def"); } - hFile = CreateFile( - infile, - GENERIC_READ, - FILE_SHARE_READ, - NULL, - OPEN_EXISTING, - 0, - NULL - ); + file = infile; +#ifdef _WIN32 + for (pp = ext; *pp; ++pp) + if (SearchPath(NULL, file, *pp, sizeof path, path, NULL)) { + file = path; + break; + } +#endif - if (hFile == INVALID_HANDLE_VALUE) - { - fprintf(stderr, "No such file: %s\n", infile); + fp = fopen(file, "rb"); + if (NULL == fp) { + fprintf(stderr, "tiny_impdef: no such file: %s\n", infile); goto the_end; } - - hMapObject = CreateFileMapping( - hFile, - NULL, - PAGE_READONLY, - 0, 0, - NULL - ); - - if (NULL == hMapObject) - { - fprintf(stderr, "Could not create file mapping: %s\n", infile); + op = fopen(outfile, "w"); + if (NULL == op) { + fprintf(stderr, "tiny_impdef: could not create output file: %s\n", outfile); goto the_end; } - pMem = MapViewOfFile( - hMapObject, // object to map view of - FILE_MAP_READ, // read access - 0, // high offset: map from - 0, // low offset: beginning - 0); // default: map entire file + if (v) + printf("--> %s\n", infile); - if (NULL == pMem) - { - fprintf(stderr, "Could not map view of file: %s\n", infile); + fprintf(op, "LIBRARY %s\n\nEXPORTS\n", file_basename(infile)); + p = get_export_names(fp); + if (NULL == p) { + fprintf(stderr, "tiny_impdef: could not get exported function names.\n"); goto the_end; } - if (0 != strncmp(NTSIGNATURE(pMem), "PE", 2)) - { - fprintf(stderr, "Not a PE file: %s\n", infile); - goto the_end; + for (q = p, i = 0; *q; ++i) { + fprintf(op, "%s\n", q); + q += strlen(q) + 1; } + free(p); - - hHeap = GetProcessHeap(); - nCnt = GetExportFunctionNames(pMem, hHeap, &pNames); - if (0 == nCnt) { - fprintf(stderr, "Could not get exported function names: %s\n", infile); - goto the_end; + if (v) { + printf("<-- %s\n", outfile); + printf("%d symbol(s) found\n", i); } - printf("--> %s\n", infile); - - op = fopen(outfile, "w"); - if (NULL == op) - { - fprintf(stderr, "Could not create file: %s\n", outfile); - goto the_end; - } - - printf("<-- %s\n", outfile); - - fprintf(op, "LIBRARY %s\n\nEXPORTS\n", file_basename(infile)); - for (n = 0, p = pNames; n < nCnt; ++n) - { - fprintf(op, "%s\n", p); - while (*p++); - } ret = 0; the_end: - if (pMem) - UnmapViewOfFile(pMem); - - if (hMapObject) - CloseHandle(hMapObject); - - if (hFile) - CloseHandle(hFile); - + if (fp) + fclose(fp); + if (op) + fclose(op); return ret; } |