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",
83 DSO_METHOD *DSO_METHOD_openssl(void)
85 return &dso_meth_win32;
89 * For this DSO_METHOD, our meth_data STACK will contain; (i) a pointer to
90 * the handle (HINSTANCE) returned from LoadLibrary(), and copied.
93 static int win32_load(DSO *dso)
95 HINSTANCE h = NULL, *p = NULL;
96 /* See applicable comments from dso_dl.c */
97 char *filename = DSO_convert_filename(dso, NULL);
99 if (filename == NULL) {
100 DSOerr(DSO_F_WIN32_LOAD, DSO_R_NO_FILENAME);
103 h = LoadLibraryA(filename);
105 DSOerr(DSO_F_WIN32_LOAD, DSO_R_LOAD_FAILED);
106 ERR_add_error_data(3, "filename(", filename, ")");
109 p = OPENSSL_malloc(sizeof(*p));
111 DSOerr(DSO_F_WIN32_LOAD, ERR_R_MALLOC_FAILURE);
115 if (!sk_void_push(dso->meth_data, p)) {
116 DSOerr(DSO_F_WIN32_LOAD, DSO_R_STACK_ERROR);
120 dso->loaded_filename = filename;
124 OPENSSL_free(filename);
131 static int win32_unload(DSO *dso)
135 DSOerr(DSO_F_WIN32_UNLOAD, ERR_R_PASSED_NULL_PARAMETER);
138 if (sk_void_num(dso->meth_data) < 1)
140 p = sk_void_pop(dso->meth_data);
142 DSOerr(DSO_F_WIN32_UNLOAD, DSO_R_NULL_HANDLE);
145 if (!FreeLibrary(*p)) {
146 DSOerr(DSO_F_WIN32_UNLOAD, DSO_R_UNLOAD_FAILED);
148 * We should push the value back onto the stack in case of a retry.
150 sk_void_push(dso->meth_data, p);
158 static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname)
166 if ((dso == NULL) || (symname == NULL)) {
167 DSOerr(DSO_F_WIN32_BIND_FUNC, ERR_R_PASSED_NULL_PARAMETER);
170 if (sk_void_num(dso->meth_data) < 1) {
171 DSOerr(DSO_F_WIN32_BIND_FUNC, DSO_R_STACK_ERROR);
174 ptr = sk_void_value(dso->meth_data, sk_void_num(dso->meth_data) - 1);
176 DSOerr(DSO_F_WIN32_BIND_FUNC, DSO_R_NULL_HANDLE);
179 sym.f = GetProcAddress(*ptr, symname);
181 DSOerr(DSO_F_WIN32_BIND_FUNC, DSO_R_SYM_FAILURE);
182 ERR_add_error_data(3, "symname(", symname, ")");
185 return ((DSO_FUNC_TYPE)sym.f);
201 static struct file_st *win32_splitter(DSO *dso, const char *filename,
202 int assume_last_is_dir)
204 struct file_st *result = NULL;
205 enum { IN_NODE, IN_DEVICE, IN_FILE } position;
206 const char *start = filename;
210 DSOerr(DSO_F_WIN32_SPLITTER, DSO_R_NO_FILENAME);
217 result = OPENSSL_zalloc(sizeof(*result));
218 if (result == NULL) {
219 DSOerr(DSO_F_WIN32_SPLITTER, ERR_R_MALLOC_FAILURE);
223 position = IN_DEVICE;
225 if ((filename[0] == '\\' && filename[1] == '\\')
226 || (filename[0] == '/' && filename[1] == '/')) {
230 result->node = start;
237 if (position != IN_DEVICE) {
238 DSOerr(DSO_F_WIN32_SPLITTER, DSO_R_INCORRECT_FILE_SYNTAX);
242 OPENSSL_free(result);
245 result->device = start;
246 result->devicelen = (int)(filename - start);
253 if (position == IN_NODE) {
254 result->nodelen = (int)(filename - start);
258 } else if (position == IN_DEVICE) {
262 result->dirlen = (int)(filename - start);
266 result->dirlen += (int)(filename - start);
271 if (position == IN_NODE) {
272 result->nodelen = (int)(filename - start);
274 if (filename - start > 0) {
275 if (assume_last_is_dir) {
276 if (position == IN_DEVICE) {
280 result->dirlen += (int)(filename - start);
282 result->file = start;
283 result->filelen = (int)(filename - start);
295 if (!result->nodelen)
297 if (!result->devicelen)
298 result->device = NULL;
301 if (!result->filelen)
307 static char *win32_joiner(DSO *dso, const struct file_st *file_split)
309 int len = 0, offset = 0;
314 DSOerr(DSO_F_WIN32_JOINER, ERR_R_PASSED_NULL_PARAMETER);
317 if (file_split->node) {
318 len += 2 + file_split->nodelen; /* 2 for starting \\ */
319 if (file_split->predir || file_split->dir || file_split->file)
320 len++; /* 1 for ending \ */
321 } else if (file_split->device) {
322 len += file_split->devicelen + 1; /* 1 for ending : */
324 len += file_split->predirlen;
325 if (file_split->predir && (file_split->dir || file_split->file)) {
326 len++; /* 1 for ending \ */
328 len += file_split->dirlen;
329 if (file_split->dir && file_split->file) {
330 len++; /* 1 for ending \ */
332 len += file_split->filelen;
335 DSOerr(DSO_F_WIN32_JOINER, DSO_R_EMPTY_FILE_STRUCTURE);
339 result = OPENSSL_malloc(len + 1);
340 if (result == NULL) {
341 DSOerr(DSO_F_WIN32_JOINER, ERR_R_MALLOC_FAILURE);
345 if (file_split->node) {
346 strcpy(&result[offset], "\\\\");
348 strncpy(&result[offset], file_split->node, file_split->nodelen);
349 offset += file_split->nodelen;
350 if (file_split->predir || file_split->dir || file_split->file) {
351 result[offset] = '\\';
354 } else if (file_split->device) {
355 strncpy(&result[offset], file_split->device, file_split->devicelen);
356 offset += file_split->devicelen;
357 result[offset] = ':';
360 start = file_split->predir;
361 while (file_split->predirlen > (start - file_split->predir)) {
362 const char *end = openssl_strnchr(start, '/',
363 file_split->predirlen - (start -
364 file_split->predir));
367 + file_split->predirlen - (start - file_split->predir);
368 strncpy(&result[offset], start, end - start);
369 offset += (int)(end - start);
370 result[offset] = '\\';
374 start = file_split->dir;
375 while (file_split->dirlen > (start - file_split->dir)) {
376 const char *end = openssl_strnchr(start, '/',
377 file_split->dirlen - (start -
380 end = start + file_split->dirlen - (start - file_split->dir);
381 strncpy(&result[offset], start, end - start);
382 offset += (int)(end - start);
383 result[offset] = '\\';
387 strncpy(&result[offset], file_split->file, file_split->filelen);
388 offset += file_split->filelen;
389 result[offset] = '\0';
393 static char *win32_merger(DSO *dso, const char *filespec1,
394 const char *filespec2)
397 struct file_st *filespec1_split = NULL;
398 struct file_st *filespec2_split = NULL;
400 if (!filespec1 && !filespec2) {
401 DSOerr(DSO_F_WIN32_MERGER, ERR_R_PASSED_NULL_PARAMETER);
405 merged = OPENSSL_malloc(strlen(filespec1) + 1);
406 if (merged == NULL) {
407 DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
410 strcpy(merged, filespec1);
411 } else if (!filespec1) {
412 merged = OPENSSL_malloc(strlen(filespec2) + 1);
413 if (merged == NULL) {
414 DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
417 strcpy(merged, filespec2);
419 filespec1_split = win32_splitter(dso, filespec1, 0);
420 if (!filespec1_split) {
421 DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
424 filespec2_split = win32_splitter(dso, filespec2, 1);
425 if (!filespec2_split) {
426 DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
427 OPENSSL_free(filespec1_split);
431 /* Fill in into filespec1_split */
432 if (!filespec1_split->node && !filespec1_split->device) {
433 filespec1_split->node = filespec2_split->node;
434 filespec1_split->nodelen = filespec2_split->nodelen;
435 filespec1_split->device = filespec2_split->device;
436 filespec1_split->devicelen = filespec2_split->devicelen;
438 if (!filespec1_split->dir) {
439 filespec1_split->dir = filespec2_split->dir;
440 filespec1_split->dirlen = filespec2_split->dirlen;
441 } else if (filespec1_split->dir[0] != '\\'
442 && filespec1_split->dir[0] != '/') {
443 filespec1_split->predir = filespec2_split->dir;
444 filespec1_split->predirlen = filespec2_split->dirlen;
446 if (!filespec1_split->file) {
447 filespec1_split->file = filespec2_split->file;
448 filespec1_split->filelen = filespec2_split->filelen;
451 merged = win32_joiner(dso, filespec1_split);
453 OPENSSL_free(filespec1_split);
454 OPENSSL_free(filespec2_split);
458 static char *win32_name_converter(DSO *dso, const char *filename)
463 len = strlen(filename);
464 transform = ((strstr(filename, "/") == NULL) &&
465 (strstr(filename, "\\") == NULL) &&
466 (strstr(filename, ":") == NULL));
468 /* We will convert this to "%s.dll" */
469 translated = OPENSSL_malloc(len + 5);
471 /* We will simply duplicate filename */
472 translated = OPENSSL_malloc(len + 1);
473 if (translated == NULL) {
474 DSOerr(DSO_F_WIN32_NAME_CONVERTER, DSO_R_NAME_TRANSLATION_FAILED);
478 sprintf(translated, "%s.dll", filename);
480 sprintf(translated, "%s", filename);
484 static const char *openssl_strnchr(const char *string, int c, size_t len)
488 for (i = 0, p = string; i < len && *p; i++, p++) {
495 # include <tlhelp32.h>
497 # define DLLNAME "TOOLHELP.DLL"
499 # ifdef MODULEENTRY32
500 # undef MODULEENTRY32 /* unmask the ASCII version! */
502 # define DLLNAME "KERNEL32.DLL"
505 typedef HANDLE(WINAPI *CREATETOOLHELP32SNAPSHOT) (DWORD, DWORD);
506 typedef BOOL(WINAPI *CLOSETOOLHELP32SNAPSHOT) (HANDLE);
507 typedef BOOL(WINAPI *MODULE32) (HANDLE, MODULEENTRY32 *);
509 static void *win32_globallookup(const char *name)
512 HANDLE hModuleSnap = INVALID_HANDLE_VALUE;
514 CREATETOOLHELP32SNAPSHOT create_snap;
515 CLOSETOOLHELP32SNAPSHOT close_snap;
516 MODULE32 module_first, module_next;
522 dll = LoadLibrary(TEXT(DLLNAME));
524 DSOerr(DSO_F_WIN32_GLOBALLOOKUP, DSO_R_UNSUPPORTED);
528 create_snap = (CREATETOOLHELP32SNAPSHOT)
529 GetProcAddress(dll, "CreateToolhelp32Snapshot");
530 if (create_snap == NULL) {
532 DSOerr(DSO_F_WIN32_GLOBALLOOKUP, DSO_R_UNSUPPORTED);
535 /* We take the rest for granted... */
537 close_snap = (CLOSETOOLHELP32SNAPSHOT)
538 GetProcAddress(dll, "CloseToolhelp32Snapshot");
540 close_snap = (CLOSETOOLHELP32SNAPSHOT) CloseHandle;
542 module_first = (MODULE32) GetProcAddress(dll, "Module32First");
543 module_next = (MODULE32) GetProcAddress(dll, "Module32Next");
545 hModuleSnap = (*create_snap) (TH32CS_SNAPMODULE, 0);
546 if (hModuleSnap == INVALID_HANDLE_VALUE) {
548 DSOerr(DSO_F_WIN32_GLOBALLOOKUP, DSO_R_UNSUPPORTED);
552 me32.dwSize = sizeof(me32);
554 if (!(*module_first) (hModuleSnap, &me32)) {
555 (*close_snap) (hModuleSnap);
561 if ((ret.f = GetProcAddress(me32.hModule, name))) {
562 (*close_snap) (hModuleSnap);
566 } while ((*module_next) (hModuleSnap, &me32));
568 (*close_snap) (hModuleSnap);
572 #endif /* DSO_WIN32 */