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);
215 result = OPENSSL_zalloc(sizeof(*result));
216 if (result == NULL) {
217 DSOerr(DSO_F_WIN32_SPLITTER, ERR_R_MALLOC_FAILURE);
221 position = IN_DEVICE;
223 if ((filename[0] == '\\' && filename[1] == '\\')
224 || (filename[0] == '/' && filename[1] == '/')) {
228 result->node = start;
235 if (position != IN_DEVICE) {
236 DSOerr(DSO_F_WIN32_SPLITTER, DSO_R_INCORRECT_FILE_SYNTAX);
237 OPENSSL_free(result);
240 result->device = start;
241 result->devicelen = (int)(filename - start);
248 if (position == IN_NODE) {
249 result->nodelen = (int)(filename - start);
253 } else if (position == IN_DEVICE) {
257 result->dirlen = (int)(filename - start);
261 result->dirlen += (int)(filename - start);
266 if (position == IN_NODE) {
267 result->nodelen = (int)(filename - start);
269 if (filename - start > 0) {
270 if (assume_last_is_dir) {
271 if (position == IN_DEVICE) {
275 result->dirlen += (int)(filename - start);
277 result->file = start;
278 result->filelen = (int)(filename - start);
290 if (!result->nodelen)
292 if (!result->devicelen)
293 result->device = NULL;
296 if (!result->filelen)
302 static char *win32_joiner(DSO *dso, const struct file_st *file_split)
304 int len = 0, offset = 0;
309 DSOerr(DSO_F_WIN32_JOINER, ERR_R_PASSED_NULL_PARAMETER);
312 if (file_split->node) {
313 len += 2 + file_split->nodelen; /* 2 for starting \\ */
314 if (file_split->predir || file_split->dir || file_split->file)
315 len++; /* 1 for ending \ */
316 } else if (file_split->device) {
317 len += file_split->devicelen + 1; /* 1 for ending : */
319 len += file_split->predirlen;
320 if (file_split->predir && (file_split->dir || file_split->file)) {
321 len++; /* 1 for ending \ */
323 len += file_split->dirlen;
324 if (file_split->dir && file_split->file) {
325 len++; /* 1 for ending \ */
327 len += file_split->filelen;
330 DSOerr(DSO_F_WIN32_JOINER, DSO_R_EMPTY_FILE_STRUCTURE);
334 result = OPENSSL_malloc(len + 1);
335 if (result == NULL) {
336 DSOerr(DSO_F_WIN32_JOINER, ERR_R_MALLOC_FAILURE);
340 if (file_split->node) {
341 strcpy(&result[offset], "\\\\");
343 strncpy(&result[offset], file_split->node, file_split->nodelen);
344 offset += file_split->nodelen;
345 if (file_split->predir || file_split->dir || file_split->file) {
346 result[offset] = '\\';
349 } else if (file_split->device) {
350 strncpy(&result[offset], file_split->device, file_split->devicelen);
351 offset += file_split->devicelen;
352 result[offset] = ':';
355 start = file_split->predir;
356 while (file_split->predirlen > (start - file_split->predir)) {
357 const char *end = openssl_strnchr(start, '/',
358 file_split->predirlen - (start -
359 file_split->predir));
362 + file_split->predirlen - (start - file_split->predir);
363 strncpy(&result[offset], start, end - start);
364 offset += (int)(end - start);
365 result[offset] = '\\';
369 start = file_split->dir;
370 while (file_split->dirlen > (start - file_split->dir)) {
371 const char *end = openssl_strnchr(start, '/',
372 file_split->dirlen - (start -
375 end = start + file_split->dirlen - (start - file_split->dir);
376 strncpy(&result[offset], start, end - start);
377 offset += (int)(end - start);
378 result[offset] = '\\';
382 strncpy(&result[offset], file_split->file, file_split->filelen);
383 offset += file_split->filelen;
384 result[offset] = '\0';
388 static char *win32_merger(DSO *dso, const char *filespec1,
389 const char *filespec2)
392 struct file_st *filespec1_split = NULL;
393 struct file_st *filespec2_split = NULL;
395 if (!filespec1 && !filespec2) {
396 DSOerr(DSO_F_WIN32_MERGER, ERR_R_PASSED_NULL_PARAMETER);
400 merged = OPENSSL_malloc(strlen(filespec1) + 1);
401 if (merged == NULL) {
402 DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
405 strcpy(merged, filespec1);
406 } else if (!filespec1) {
407 merged = OPENSSL_malloc(strlen(filespec2) + 1);
408 if (merged == NULL) {
409 DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
412 strcpy(merged, filespec2);
414 filespec1_split = win32_splitter(dso, filespec1, 0);
415 if (!filespec1_split) {
416 DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
419 filespec2_split = win32_splitter(dso, filespec2, 1);
420 if (!filespec2_split) {
421 DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
422 OPENSSL_free(filespec1_split);
426 /* Fill in into filespec1_split */
427 if (!filespec1_split->node && !filespec1_split->device) {
428 filespec1_split->node = filespec2_split->node;
429 filespec1_split->nodelen = filespec2_split->nodelen;
430 filespec1_split->device = filespec2_split->device;
431 filespec1_split->devicelen = filespec2_split->devicelen;
433 if (!filespec1_split->dir) {
434 filespec1_split->dir = filespec2_split->dir;
435 filespec1_split->dirlen = filespec2_split->dirlen;
436 } else if (filespec1_split->dir[0] != '\\'
437 && filespec1_split->dir[0] != '/') {
438 filespec1_split->predir = filespec2_split->dir;
439 filespec1_split->predirlen = filespec2_split->dirlen;
441 if (!filespec1_split->file) {
442 filespec1_split->file = filespec2_split->file;
443 filespec1_split->filelen = filespec2_split->filelen;
446 merged = win32_joiner(dso, filespec1_split);
448 OPENSSL_free(filespec1_split);
449 OPENSSL_free(filespec2_split);
453 static char *win32_name_converter(DSO *dso, const char *filename)
458 len = strlen(filename);
459 transform = ((strstr(filename, "/") == NULL) &&
460 (strstr(filename, "\\") == NULL) &&
461 (strstr(filename, ":") == NULL));
463 /* We will convert this to "%s.dll" */
464 translated = OPENSSL_malloc(len + 5);
466 /* We will simply duplicate filename */
467 translated = OPENSSL_malloc(len + 1);
468 if (translated == NULL) {
469 DSOerr(DSO_F_WIN32_NAME_CONVERTER, DSO_R_NAME_TRANSLATION_FAILED);
473 sprintf(translated, "%s.dll", filename);
475 sprintf(translated, "%s", filename);
479 static const char *openssl_strnchr(const char *string, int c, size_t len)
483 for (i = 0, p = string; i < len && *p; i++, p++) {
490 # include <tlhelp32.h>
492 # define DLLNAME "TOOLHELP.DLL"
494 # ifdef MODULEENTRY32
495 # undef MODULEENTRY32 /* unmask the ASCII version! */
497 # define DLLNAME "KERNEL32.DLL"
500 typedef HANDLE(WINAPI *CREATETOOLHELP32SNAPSHOT) (DWORD, DWORD);
501 typedef BOOL(WINAPI *CLOSETOOLHELP32SNAPSHOT) (HANDLE);
502 typedef BOOL(WINAPI *MODULE32) (HANDLE, MODULEENTRY32 *);
504 static void *win32_globallookup(const char *name)
507 HANDLE hModuleSnap = INVALID_HANDLE_VALUE;
509 CREATETOOLHELP32SNAPSHOT create_snap;
510 CLOSETOOLHELP32SNAPSHOT close_snap;
511 MODULE32 module_first, module_next;
517 dll = LoadLibrary(TEXT(DLLNAME));
519 DSOerr(DSO_F_WIN32_GLOBALLOOKUP, DSO_R_UNSUPPORTED);
523 create_snap = (CREATETOOLHELP32SNAPSHOT)
524 GetProcAddress(dll, "CreateToolhelp32Snapshot");
525 if (create_snap == NULL) {
527 DSOerr(DSO_F_WIN32_GLOBALLOOKUP, DSO_R_UNSUPPORTED);
530 /* We take the rest for granted... */
532 close_snap = (CLOSETOOLHELP32SNAPSHOT)
533 GetProcAddress(dll, "CloseToolhelp32Snapshot");
535 close_snap = (CLOSETOOLHELP32SNAPSHOT) CloseHandle;
537 module_first = (MODULE32) GetProcAddress(dll, "Module32First");
538 module_next = (MODULE32) GetProcAddress(dll, "Module32Next");
540 hModuleSnap = (*create_snap) (TH32CS_SNAPMODULE, 0);
541 if (hModuleSnap == INVALID_HANDLE_VALUE) {
543 DSOerr(DSO_F_WIN32_GLOBALLOOKUP, DSO_R_UNSUPPORTED);
547 me32.dwSize = sizeof(me32);
549 if (!(*module_first) (hModuleSnap, &me32)) {
550 (*close_snap) (hModuleSnap);
556 if ((ret.f = GetProcAddress(me32.hModule, name))) {
557 (*close_snap) (hModuleSnap);
561 } while ((*module_next) (hModuleSnap, &me32));
563 (*close_snap) (hModuleSnap);
567 #endif /* DSO_WIN32 */