2 * Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
12 #if defined(DSO_WIN32)
16 static FARPROC GetProcAddressA(HMODULE hModule, LPCSTR lpProcName)
18 WCHAR lpProcNameW[64];
21 for (i = 0; lpProcName[i] && i < 64; i++)
22 lpProcNameW[i] = (WCHAR)lpProcName[i];
27 return GetProcAddressW(hModule, lpProcNameW);
30 # undef GetProcAddress
31 # define GetProcAddress GetProcAddressA
33 static HINSTANCE LoadLibraryA(LPCSTR lpLibFileName)
36 size_t len_0 = strlen(lpLibFileName) + 1, i;
39 fnamw = (WCHAR *)_alloca(len_0 * sizeof(WCHAR));
41 fnamw = (WCHAR *)alloca(len_0 * sizeof(WCHAR));
44 SetLastError(ERROR_NOT_ENOUGH_MEMORY);
47 # if defined(_WIN32_WCE) && _WIN32_WCE>=101
48 if (!MultiByteToWideChar(CP_ACP, 0, lpLibFileName, len_0, fnamw, len_0))
50 for (i = 0; i < len_0; i++)
51 fnamw[i] = (WCHAR)lpLibFileName[i];
53 return LoadLibraryW(fnamw);
57 /* Part of the hack in "win32_load" ... */
58 # define DSO_MAX_TRANSLATED_SIZE 256
60 static int win32_load(DSO *dso);
61 static int win32_unload(DSO *dso);
62 static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname);
63 static char *win32_name_converter(DSO *dso, const char *filename);
64 static char *win32_merger(DSO *dso, const char *filespec1,
65 const char *filespec2);
66 static void *win32_globallookup(const char *name);
68 static const char *openssl_strnchr(const char *string, int c, size_t len);
70 static DSO_METHOD dso_meth_win32 = {
71 "OpenSSL 'win32' shared library method",
80 NULL, /* pathbyaddr */
84 DSO_METHOD *DSO_METHOD_openssl(void)
86 return &dso_meth_win32;
90 * For this DSO_METHOD, our meth_data STACK will contain; (i) a pointer to
91 * the handle (HINSTANCE) returned from LoadLibrary(), and copied.
94 static int win32_load(DSO *dso)
96 HINSTANCE h = NULL, *p = NULL;
97 /* See applicable comments from dso_dl.c */
98 char *filename = DSO_convert_filename(dso, NULL);
100 if (filename == NULL) {
101 DSOerr(DSO_F_WIN32_LOAD, DSO_R_NO_FILENAME);
104 h = LoadLibraryA(filename);
106 DSOerr(DSO_F_WIN32_LOAD, DSO_R_LOAD_FAILED);
107 ERR_add_error_data(3, "filename(", filename, ")");
110 p = OPENSSL_malloc(sizeof(*p));
112 DSOerr(DSO_F_WIN32_LOAD, ERR_R_MALLOC_FAILURE);
116 if (!sk_void_push(dso->meth_data, p)) {
117 DSOerr(DSO_F_WIN32_LOAD, DSO_R_STACK_ERROR);
121 dso->loaded_filename = filename;
125 OPENSSL_free(filename);
132 static int win32_unload(DSO *dso)
136 DSOerr(DSO_F_WIN32_UNLOAD, ERR_R_PASSED_NULL_PARAMETER);
139 if (sk_void_num(dso->meth_data) < 1)
141 p = sk_void_pop(dso->meth_data);
143 DSOerr(DSO_F_WIN32_UNLOAD, DSO_R_NULL_HANDLE);
146 if (!FreeLibrary(*p)) {
147 DSOerr(DSO_F_WIN32_UNLOAD, DSO_R_UNLOAD_FAILED);
149 * We should push the value back onto the stack in case of a retry.
151 sk_void_push(dso->meth_data, p);
159 static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname)
167 if ((dso == NULL) || (symname == NULL)) {
168 DSOerr(DSO_F_WIN32_BIND_FUNC, ERR_R_PASSED_NULL_PARAMETER);
171 if (sk_void_num(dso->meth_data) < 1) {
172 DSOerr(DSO_F_WIN32_BIND_FUNC, DSO_R_STACK_ERROR);
175 ptr = sk_void_value(dso->meth_data, sk_void_num(dso->meth_data) - 1);
177 DSOerr(DSO_F_WIN32_BIND_FUNC, DSO_R_NULL_HANDLE);
180 sym.f = GetProcAddress(*ptr, symname);
182 DSOerr(DSO_F_WIN32_BIND_FUNC, DSO_R_SYM_FAILURE);
183 ERR_add_error_data(3, "symname(", symname, ")");
186 return ((DSO_FUNC_TYPE)sym.f);
202 static struct file_st *win32_splitter(DSO *dso, const char *filename,
203 int assume_last_is_dir)
205 struct file_st *result = NULL;
206 enum { IN_NODE, IN_DEVICE, IN_FILE } position;
207 const char *start = filename;
211 DSOerr(DSO_F_WIN32_SPLITTER, DSO_R_NO_FILENAME);
218 result = OPENSSL_zalloc(sizeof(*result));
219 if (result == NULL) {
220 DSOerr(DSO_F_WIN32_SPLITTER, ERR_R_MALLOC_FAILURE);
224 position = IN_DEVICE;
226 if ((filename[0] == '\\' && filename[1] == '\\')
227 || (filename[0] == '/' && filename[1] == '/')) {
231 result->node = start;
238 if (position != IN_DEVICE) {
239 DSOerr(DSO_F_WIN32_SPLITTER, DSO_R_INCORRECT_FILE_SYNTAX);
243 OPENSSL_free(result);
246 result->device = start;
247 result->devicelen = (int)(filename - start);
254 if (position == IN_NODE) {
255 result->nodelen = (int)(filename - start);
259 } else if (position == IN_DEVICE) {
263 result->dirlen = (int)(filename - start);
267 result->dirlen += (int)(filename - start);
272 if (position == IN_NODE) {
273 result->nodelen = (int)(filename - start);
275 if (filename - start > 0) {
276 if (assume_last_is_dir) {
277 if (position == IN_DEVICE) {
281 result->dirlen += (int)(filename - start);
283 result->file = start;
284 result->filelen = (int)(filename - start);
296 if (!result->nodelen)
298 if (!result->devicelen)
299 result->device = NULL;
302 if (!result->filelen)
308 static char *win32_joiner(DSO *dso, const struct file_st *file_split)
310 int len = 0, offset = 0;
315 DSOerr(DSO_F_WIN32_JOINER, ERR_R_PASSED_NULL_PARAMETER);
318 if (file_split->node) {
319 len += 2 + file_split->nodelen; /* 2 for starting \\ */
320 if (file_split->predir || file_split->dir || file_split->file)
321 len++; /* 1 for ending \ */
322 } else if (file_split->device) {
323 len += file_split->devicelen + 1; /* 1 for ending : */
325 len += file_split->predirlen;
326 if (file_split->predir && (file_split->dir || file_split->file)) {
327 len++; /* 1 for ending \ */
329 len += file_split->dirlen;
330 if (file_split->dir && file_split->file) {
331 len++; /* 1 for ending \ */
333 len += file_split->filelen;
336 DSOerr(DSO_F_WIN32_JOINER, DSO_R_EMPTY_FILE_STRUCTURE);
340 result = OPENSSL_malloc(len + 1);
341 if (result == NULL) {
342 DSOerr(DSO_F_WIN32_JOINER, ERR_R_MALLOC_FAILURE);
346 if (file_split->node) {
347 strcpy(&result[offset], "\\\\");
349 strncpy(&result[offset], file_split->node, file_split->nodelen);
350 offset += file_split->nodelen;
351 if (file_split->predir || file_split->dir || file_split->file) {
352 result[offset] = '\\';
355 } else if (file_split->device) {
356 strncpy(&result[offset], file_split->device, file_split->devicelen);
357 offset += file_split->devicelen;
358 result[offset] = ':';
361 start = file_split->predir;
362 while (file_split->predirlen > (start - file_split->predir)) {
363 const char *end = openssl_strnchr(start, '/',
364 file_split->predirlen - (start -
365 file_split->predir));
368 + file_split->predirlen - (start - file_split->predir);
369 strncpy(&result[offset], start, end - start);
370 offset += (int)(end - start);
371 result[offset] = '\\';
375 start = file_split->dir;
376 while (file_split->dirlen > (start - file_split->dir)) {
377 const char *end = openssl_strnchr(start, '/',
378 file_split->dirlen - (start -
381 end = start + file_split->dirlen - (start - file_split->dir);
382 strncpy(&result[offset], start, end - start);
383 offset += (int)(end - start);
384 result[offset] = '\\';
388 strncpy(&result[offset], file_split->file, file_split->filelen);
389 offset += file_split->filelen;
390 result[offset] = '\0';
394 static char *win32_merger(DSO *dso, const char *filespec1,
395 const char *filespec2)
398 struct file_st *filespec1_split = NULL;
399 struct file_st *filespec2_split = NULL;
401 if (!filespec1 && !filespec2) {
402 DSOerr(DSO_F_WIN32_MERGER, ERR_R_PASSED_NULL_PARAMETER);
406 merged = OPENSSL_malloc(strlen(filespec1) + 1);
407 if (merged == NULL) {
408 DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
411 strcpy(merged, filespec1);
412 } else if (!filespec1) {
413 merged = OPENSSL_malloc(strlen(filespec2) + 1);
414 if (merged == NULL) {
415 DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
418 strcpy(merged, filespec2);
420 filespec1_split = win32_splitter(dso, filespec1, 0);
421 if (!filespec1_split) {
422 DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
425 filespec2_split = win32_splitter(dso, filespec2, 1);
426 if (!filespec2_split) {
427 DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
428 OPENSSL_free(filespec1_split);
432 /* Fill in into filespec1_split */
433 if (!filespec1_split->node && !filespec1_split->device) {
434 filespec1_split->node = filespec2_split->node;
435 filespec1_split->nodelen = filespec2_split->nodelen;
436 filespec1_split->device = filespec2_split->device;
437 filespec1_split->devicelen = filespec2_split->devicelen;
439 if (!filespec1_split->dir) {
440 filespec1_split->dir = filespec2_split->dir;
441 filespec1_split->dirlen = filespec2_split->dirlen;
442 } else if (filespec1_split->dir[0] != '\\'
443 && filespec1_split->dir[0] != '/') {
444 filespec1_split->predir = filespec2_split->dir;
445 filespec1_split->predirlen = filespec2_split->dirlen;
447 if (!filespec1_split->file) {
448 filespec1_split->file = filespec2_split->file;
449 filespec1_split->filelen = filespec2_split->filelen;
452 merged = win32_joiner(dso, filespec1_split);
454 OPENSSL_free(filespec1_split);
455 OPENSSL_free(filespec2_split);
459 static char *win32_name_converter(DSO *dso, const char *filename)
464 len = strlen(filename);
465 transform = ((strstr(filename, "/") == NULL) &&
466 (strstr(filename, "\\") == NULL) &&
467 (strstr(filename, ":") == NULL));
469 /* We will convert this to "%s.dll" */
470 translated = OPENSSL_malloc(len + 5);
472 /* We will simply duplicate filename */
473 translated = OPENSSL_malloc(len + 1);
474 if (translated == NULL) {
475 DSOerr(DSO_F_WIN32_NAME_CONVERTER, DSO_R_NAME_TRANSLATION_FAILED);
479 sprintf(translated, "%s.dll", filename);
481 sprintf(translated, "%s", filename);
485 static const char *openssl_strnchr(const char *string, int c, size_t len)
489 for (i = 0, p = string; i < len && *p; i++, p++) {
496 # include <tlhelp32.h>
498 # define DLLNAME "TOOLHELP.DLL"
500 # ifdef MODULEENTRY32
501 # undef MODULEENTRY32 /* unmask the ASCII version! */
503 # define DLLNAME "KERNEL32.DLL"
506 typedef HANDLE(WINAPI *CREATETOOLHELP32SNAPSHOT) (DWORD, DWORD);
507 typedef BOOL(WINAPI *CLOSETOOLHELP32SNAPSHOT) (HANDLE);
508 typedef BOOL(WINAPI *MODULE32) (HANDLE, MODULEENTRY32 *);
510 static void *win32_globallookup(const char *name)
513 HANDLE hModuleSnap = INVALID_HANDLE_VALUE;
515 CREATETOOLHELP32SNAPSHOT create_snap;
516 CLOSETOOLHELP32SNAPSHOT close_snap;
517 MODULE32 module_first, module_next;
523 dll = LoadLibrary(TEXT(DLLNAME));
525 DSOerr(DSO_F_WIN32_GLOBALLOOKUP, DSO_R_UNSUPPORTED);
529 create_snap = (CREATETOOLHELP32SNAPSHOT)
530 GetProcAddress(dll, "CreateToolhelp32Snapshot");
531 if (create_snap == NULL) {
533 DSOerr(DSO_F_WIN32_GLOBALLOOKUP, DSO_R_UNSUPPORTED);
536 /* We take the rest for granted... */
538 close_snap = (CLOSETOOLHELP32SNAPSHOT)
539 GetProcAddress(dll, "CloseToolhelp32Snapshot");
541 close_snap = (CLOSETOOLHELP32SNAPSHOT) CloseHandle;
543 module_first = (MODULE32) GetProcAddress(dll, "Module32First");
544 module_next = (MODULE32) GetProcAddress(dll, "Module32Next");
546 hModuleSnap = (*create_snap) (TH32CS_SNAPMODULE, 0);
547 if (hModuleSnap == INVALID_HANDLE_VALUE) {
549 DSOerr(DSO_F_WIN32_GLOBALLOOKUP, DSO_R_UNSUPPORTED);
553 me32.dwSize = sizeof(me32);
555 if (!(*module_first) (hModuleSnap, &me32)) {
556 (*close_snap) (hModuleSnap);
562 if ((ret.f = GetProcAddress(me32.hModule, name))) {
563 (*close_snap) (hModuleSnap);
567 } while ((*module_next) (hModuleSnap, &me32));
569 (*close_snap) (hModuleSnap);
573 #endif /* DSO_WIN32 */