3 * Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL project
6 /* ====================================================================
7 * Copyright (c) 2000 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
35 * 6. Redistributions of any form whatsoever must retain the following
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com). This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
63 #include <openssl/dso.h>
65 #if !defined(DSO_WIN32)
66 DSO_METHOD *DSO_METHOD_win32(void)
74 static FARPROC GetProcAddressA(HMODULE hModule, LPCSTR lpProcName)
76 WCHAR lpProcNameW[64];
79 for (i = 0; lpProcName[i] && i < 64; i++)
80 lpProcNameW[i] = (WCHAR)lpProcName[i];
85 return GetProcAddressW(hModule, lpProcNameW);
88 # undef GetProcAddress
89 # define GetProcAddress GetProcAddressA
91 static HINSTANCE LoadLibraryA(LPCSTR lpLibFileName)
94 size_t len_0 = strlen(lpLibFileName) + 1, i;
97 fnamw = (WCHAR *)_alloca(len_0 * sizeof(WCHAR));
99 fnamw = (WCHAR *)alloca(len_0 * sizeof(WCHAR));
102 SetLastError(ERROR_NOT_ENOUGH_MEMORY);
105 # if defined(_WIN32_WCE) && _WIN32_WCE>=101
106 if (!MultiByteToWideChar(CP_ACP, 0, lpLibFileName, len_0, fnamw, len_0))
108 for (i = 0; i < len_0; i++)
109 fnamw[i] = (WCHAR)lpLibFileName[i];
111 return LoadLibraryW(fnamw);
115 /* Part of the hack in "win32_load" ... */
116 # define DSO_MAX_TRANSLATED_SIZE 256
118 static int win32_load(DSO *dso);
119 static int win32_unload(DSO *dso);
120 static void *win32_bind_var(DSO *dso, const char *symname);
121 static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname);
123 static int win32_unbind_var(DSO *dso, char *symname, void *symptr);
124 static int win32_unbind_func(DSO *dso, char *symname, DSO_FUNC_TYPE symptr);
125 static int win32_init(DSO *dso);
126 static int win32_finish(DSO *dso);
127 static long win32_ctrl(DSO *dso, int cmd, long larg, void *parg);
129 static char *win32_name_converter(DSO *dso, const char *filename);
130 static char *win32_merger(DSO *dso, const char *filespec1,
131 const char *filespec2);
132 static int win32_pathbyaddr(void *addr, char *path, int sz);
133 static void *win32_globallookup(const char *name);
135 static const char *openssl_strnchr(const char *string, int c, size_t len);
137 static DSO_METHOD dso_meth_win32 = {
138 "OpenSSL 'win32' shared library method",
143 /* For now, "unbind" doesn't exist */
145 NULL, /* unbind_var */
146 NULL, /* unbind_func */
149 win32_name_converter,
157 DSO_METHOD *DSO_METHOD_win32(void)
159 return (&dso_meth_win32);
163 * For this DSO_METHOD, our meth_data STACK will contain; (i) a pointer to
164 * the handle (HINSTANCE) returned from LoadLibrary(), and copied.
167 static int win32_load(DSO *dso)
169 HINSTANCE h = NULL, *p = NULL;
170 /* See applicable comments from dso_dl.c */
171 char *filename = DSO_convert_filename(dso, NULL);
173 if (filename == NULL) {
174 DSOerr(DSO_F_WIN32_LOAD, DSO_R_NO_FILENAME);
177 h = LoadLibraryA(filename);
179 DSOerr(DSO_F_WIN32_LOAD, DSO_R_LOAD_FAILED);
180 ERR_add_error_data(3, "filename(", filename, ")");
183 p = (HINSTANCE *) OPENSSL_malloc(sizeof(HINSTANCE));
185 DSOerr(DSO_F_WIN32_LOAD, ERR_R_MALLOC_FAILURE);
189 if (!sk_void_push(dso->meth_data, p)) {
190 DSOerr(DSO_F_WIN32_LOAD, DSO_R_STACK_ERROR);
194 dso->loaded_filename = filename;
198 if (filename != NULL)
199 OPENSSL_free(filename);
207 static int win32_unload(DSO *dso)
211 DSOerr(DSO_F_WIN32_UNLOAD, ERR_R_PASSED_NULL_PARAMETER);
214 if (sk_void_num(dso->meth_data) < 1)
216 p = sk_void_pop(dso->meth_data);
218 DSOerr(DSO_F_WIN32_UNLOAD, DSO_R_NULL_HANDLE);
221 if (!FreeLibrary(*p)) {
222 DSOerr(DSO_F_WIN32_UNLOAD, DSO_R_UNLOAD_FAILED);
224 * We should push the value back onto the stack in case of a retry.
226 sk_void_push(dso->meth_data, p);
235 * Using GetProcAddress for variables? TODO: Check this out in the Win32 API
236 * docs, there's probably a variant for variables.
238 static void *win32_bind_var(DSO *dso, const char *symname)
243 if ((dso == NULL) || (symname == NULL)) {
244 DSOerr(DSO_F_WIN32_BIND_VAR, ERR_R_PASSED_NULL_PARAMETER);
247 if (sk_void_num(dso->meth_data) < 1) {
248 DSOerr(DSO_F_WIN32_BIND_VAR, DSO_R_STACK_ERROR);
251 ptr = sk_void_value(dso->meth_data, sk_void_num(dso->meth_data) - 1);
253 DSOerr(DSO_F_WIN32_BIND_VAR, DSO_R_NULL_HANDLE);
256 sym = GetProcAddress(*ptr, symname);
258 DSOerr(DSO_F_WIN32_BIND_VAR, DSO_R_SYM_FAILURE);
259 ERR_add_error_data(3, "symname(", symname, ")");
265 static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname)
270 if ((dso == NULL) || (symname == NULL)) {
271 DSOerr(DSO_F_WIN32_BIND_FUNC, ERR_R_PASSED_NULL_PARAMETER);
274 if (sk_void_num(dso->meth_data) < 1) {
275 DSOerr(DSO_F_WIN32_BIND_FUNC, DSO_R_STACK_ERROR);
278 ptr = sk_void_value(dso->meth_data, sk_void_num(dso->meth_data) - 1);
280 DSOerr(DSO_F_WIN32_BIND_FUNC, DSO_R_NULL_HANDLE);
283 sym = GetProcAddress(*ptr, symname);
285 DSOerr(DSO_F_WIN32_BIND_FUNC, DSO_R_SYM_FAILURE);
286 ERR_add_error_data(3, "symname(", symname, ")");
289 return ((DSO_FUNC_TYPE)sym);
305 static struct file_st *win32_splitter(DSO *dso, const char *filename,
306 int assume_last_is_dir)
308 struct file_st *result = NULL;
309 enum { IN_NODE, IN_DEVICE, IN_FILE } position;
310 const char *start = filename;
314 DSOerr(DSO_F_WIN32_SPLITTER, DSO_R_NO_FILENAME);
321 result = OPENSSL_malloc(sizeof(struct file_st));
322 if (result == NULL) {
323 DSOerr(DSO_F_WIN32_SPLITTER, ERR_R_MALLOC_FAILURE);
327 memset(result, 0, sizeof(struct file_st));
328 position = IN_DEVICE;
330 if ((filename[0] == '\\' && filename[1] == '\\')
331 || (filename[0] == '/' && filename[1] == '/')) {
335 result->node = start;
342 if (position != IN_DEVICE) {
343 DSOerr(DSO_F_WIN32_SPLITTER, DSO_R_INCORRECT_FILE_SYNTAX);
347 OPENSSL_free(result);
350 result->device = start;
351 result->devicelen = (int)(filename - start);
358 if (position == IN_NODE) {
359 result->nodelen = (int)(filename - start);
363 } else if (position == IN_DEVICE) {
367 result->dirlen = (int)(filename - start);
371 result->dirlen += (int)(filename - start);
376 if (position == IN_NODE) {
377 result->nodelen = (int)(filename - start);
379 if (filename - start > 0) {
380 if (assume_last_is_dir) {
381 if (position == IN_DEVICE) {
385 result->dirlen += (int)(filename - start);
387 result->file = start;
388 result->filelen = (int)(filename - start);
400 if (!result->nodelen)
402 if (!result->devicelen)
403 result->device = NULL;
406 if (!result->filelen)
412 static char *win32_joiner(DSO *dso, const struct file_st *file_split)
414 int len = 0, offset = 0;
419 DSOerr(DSO_F_WIN32_JOINER, ERR_R_PASSED_NULL_PARAMETER);
422 if (file_split->node) {
423 len += 2 + file_split->nodelen; /* 2 for starting \\ */
424 if (file_split->predir || file_split->dir || file_split->file)
425 len++; /* 1 for ending \ */
426 } else if (file_split->device) {
427 len += file_split->devicelen + 1; /* 1 for ending : */
429 len += file_split->predirlen;
430 if (file_split->predir && (file_split->dir || file_split->file)) {
431 len++; /* 1 for ending \ */
433 len += file_split->dirlen;
434 if (file_split->dir && file_split->file) {
435 len++; /* 1 for ending \ */
437 len += file_split->filelen;
440 DSOerr(DSO_F_WIN32_JOINER, DSO_R_EMPTY_FILE_STRUCTURE);
444 result = OPENSSL_malloc(len + 1);
446 DSOerr(DSO_F_WIN32_JOINER, ERR_R_MALLOC_FAILURE);
450 if (file_split->node) {
451 strcpy(&result[offset], "\\\\");
453 strncpy(&result[offset], file_split->node, file_split->nodelen);
454 offset += file_split->nodelen;
455 if (file_split->predir || file_split->dir || file_split->file) {
456 result[offset] = '\\';
459 } else if (file_split->device) {
460 strncpy(&result[offset], file_split->device, file_split->devicelen);
461 offset += file_split->devicelen;
462 result[offset] = ':';
465 start = file_split->predir;
466 while (file_split->predirlen > (start - file_split->predir)) {
467 const char *end = openssl_strnchr(start, '/',
468 file_split->predirlen - (start -
469 file_split->predir));
472 + file_split->predirlen - (start - file_split->predir);
473 strncpy(&result[offset], start, end - start);
474 offset += (int)(end - start);
475 result[offset] = '\\';
479 # if 0 /* Not needed, since the directory converter
480 * above already appeneded a backslash */
481 if (file_split->predir && (file_split->dir || file_split->file)) {
482 result[offset] = '\\';
486 start = file_split->dir;
487 while (file_split->dirlen > (start - file_split->dir)) {
488 const char *end = openssl_strnchr(start, '/',
489 file_split->dirlen - (start -
492 end = start + file_split->dirlen - (start - file_split->dir);
493 strncpy(&result[offset], start, end - start);
494 offset += (int)(end - start);
495 result[offset] = '\\';
499 # if 0 /* Not needed, since the directory converter
500 * above already appeneded a backslash */
501 if (file_split->dir && file_split->file) {
502 result[offset] = '\\';
506 strncpy(&result[offset], file_split->file, file_split->filelen);
507 offset += file_split->filelen;
508 result[offset] = '\0';
512 static char *win32_merger(DSO *dso, const char *filespec1,
513 const char *filespec2)
516 struct file_st *filespec1_split = NULL;
517 struct file_st *filespec2_split = NULL;
519 if (!filespec1 && !filespec2) {
520 DSOerr(DSO_F_WIN32_MERGER, ERR_R_PASSED_NULL_PARAMETER);
524 merged = OPENSSL_malloc(strlen(filespec1) + 1);
526 DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
529 strcpy(merged, filespec1);
530 } else if (!filespec1) {
531 merged = OPENSSL_malloc(strlen(filespec2) + 1);
533 DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
536 strcpy(merged, filespec2);
538 filespec1_split = win32_splitter(dso, filespec1, 0);
539 if (!filespec1_split) {
540 DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
543 filespec2_split = win32_splitter(dso, filespec2, 1);
544 if (!filespec2_split) {
545 DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
546 OPENSSL_free(filespec1_split);
550 /* Fill in into filespec1_split */
551 if (!filespec1_split->node && !filespec1_split->device) {
552 filespec1_split->node = filespec2_split->node;
553 filespec1_split->nodelen = filespec2_split->nodelen;
554 filespec1_split->device = filespec2_split->device;
555 filespec1_split->devicelen = filespec2_split->devicelen;
557 if (!filespec1_split->dir) {
558 filespec1_split->dir = filespec2_split->dir;
559 filespec1_split->dirlen = filespec2_split->dirlen;
560 } else if (filespec1_split->dir[0] != '\\'
561 && filespec1_split->dir[0] != '/') {
562 filespec1_split->predir = filespec2_split->dir;
563 filespec1_split->predirlen = filespec2_split->dirlen;
565 if (!filespec1_split->file) {
566 filespec1_split->file = filespec2_split->file;
567 filespec1_split->filelen = filespec2_split->filelen;
570 merged = win32_joiner(dso, filespec1_split);
572 OPENSSL_free(filespec1_split);
573 OPENSSL_free(filespec2_split);
577 static char *win32_name_converter(DSO *dso, const char *filename)
582 len = strlen(filename);
583 transform = ((strstr(filename, "/") == NULL) &&
584 (strstr(filename, "\\") == NULL) &&
585 (strstr(filename, ":") == NULL));
587 /* We will convert this to "%s.dll" */
588 translated = OPENSSL_malloc(len + 5);
590 /* We will simply duplicate filename */
591 translated = OPENSSL_malloc(len + 1);
592 if (translated == NULL) {
593 DSOerr(DSO_F_WIN32_NAME_CONVERTER, DSO_R_NAME_TRANSLATION_FAILED);
597 sprintf(translated, "%s.dll", filename);
599 sprintf(translated, "%s", filename);
603 static const char *openssl_strnchr(const char *string, int c, size_t len)
607 for (i = 0, p = string; i < len && *p; i++, p++) {
614 # include <tlhelp32.h>
616 # define DLLNAME "TOOLHELP.DLL"
618 # ifdef MODULEENTRY32
619 # undef MODULEENTRY32 /* unmask the ASCII version! */
621 # define DLLNAME "KERNEL32.DLL"
624 typedef HANDLE(WINAPI *CREATETOOLHELP32SNAPSHOT) (DWORD, DWORD);
625 typedef BOOL(WINAPI *CLOSETOOLHELP32SNAPSHOT) (HANDLE);
626 typedef BOOL(WINAPI *MODULE32) (HANDLE, MODULEENTRY32 *);
628 static int win32_pathbyaddr(void *addr, char *path, int sz)
631 HANDLE hModuleSnap = INVALID_HANDLE_VALUE;
633 CREATETOOLHELP32SNAPSHOT create_snap;
634 CLOSETOOLHELP32SNAPSHOT close_snap;
635 MODULE32 module_first, module_next;
639 int (*f) (void *, char *, int);
647 dll = LoadLibrary(TEXT(DLLNAME));
649 DSOerr(DSO_F_WIN32_PATHBYADDR, DSO_R_UNSUPPORTED);
653 create_snap = (CREATETOOLHELP32SNAPSHOT)
654 GetProcAddress(dll, "CreateToolhelp32Snapshot");
655 if (create_snap == NULL) {
657 DSOerr(DSO_F_WIN32_PATHBYADDR, DSO_R_UNSUPPORTED);
660 /* We take the rest for granted... */
662 close_snap = (CLOSETOOLHELP32SNAPSHOT)
663 GetProcAddress(dll, "CloseToolhelp32Snapshot");
665 close_snap = (CLOSETOOLHELP32SNAPSHOT) CloseHandle;
667 module_first = (MODULE32) GetProcAddress(dll, "Module32First");
668 module_next = (MODULE32) GetProcAddress(dll, "Module32Next");
670 hModuleSnap = (*create_snap) (TH32CS_SNAPMODULE, 0);
671 if (hModuleSnap == INVALID_HANDLE_VALUE) {
673 DSOerr(DSO_F_WIN32_PATHBYADDR, DSO_R_UNSUPPORTED);
677 me32.dwSize = sizeof(me32);
679 if (!(*module_first) (hModuleSnap, &me32)) {
680 (*close_snap) (hModuleSnap);
682 DSOerr(DSO_F_WIN32_PATHBYADDR, DSO_R_FAILURE);
687 if ((BYTE *) addr >= me32.modBaseAddr &&
688 (BYTE *) addr < me32.modBaseAddr + me32.modBaseSize) {
689 (*close_snap) (hModuleSnap);
692 # if _WIN32_WCE >= 101
693 return WideCharToMultiByte(CP_ACP, 0, me32.szExePath, -1,
694 path, sz, NULL, NULL);
697 int i, len = (int)wcslen(me32.szExePath);
702 for (i = 0; i < len; i++)
703 path[i] = (char)me32.szExePath[i];
710 int len = (int)strlen(me32.szExePath);
715 memcpy(path, me32.szExePath, len);
721 } while ((*module_next) (hModuleSnap, &me32));
723 (*close_snap) (hModuleSnap);
728 static void *win32_globallookup(const char *name)
731 HANDLE hModuleSnap = INVALID_HANDLE_VALUE;
733 CREATETOOLHELP32SNAPSHOT create_snap;
734 CLOSETOOLHELP32SNAPSHOT close_snap;
735 MODULE32 module_first, module_next;
738 dll = LoadLibrary(TEXT(DLLNAME));
740 DSOerr(DSO_F_WIN32_GLOBALLOOKUP, DSO_R_UNSUPPORTED);
744 create_snap = (CREATETOOLHELP32SNAPSHOT)
745 GetProcAddress(dll, "CreateToolhelp32Snapshot");
746 if (create_snap == NULL) {
748 DSOerr(DSO_F_WIN32_GLOBALLOOKUP, DSO_R_UNSUPPORTED);
751 /* We take the rest for granted... */
753 close_snap = (CLOSETOOLHELP32SNAPSHOT)
754 GetProcAddress(dll, "CloseToolhelp32Snapshot");
756 close_snap = (CLOSETOOLHELP32SNAPSHOT) CloseHandle;
758 module_first = (MODULE32) GetProcAddress(dll, "Module32First");
759 module_next = (MODULE32) GetProcAddress(dll, "Module32Next");
761 hModuleSnap = (*create_snap) (TH32CS_SNAPMODULE, 0);
762 if (hModuleSnap == INVALID_HANDLE_VALUE) {
764 DSOerr(DSO_F_WIN32_GLOBALLOOKUP, DSO_R_UNSUPPORTED);
768 me32.dwSize = sizeof(me32);
770 if (!(*module_first) (hModuleSnap, &me32)) {
771 (*close_snap) (hModuleSnap);
777 if ((ret = GetProcAddress(me32.hModule, name))) {
778 (*close_snap) (hModuleSnap);
782 } while ((*module_next) (hModuleSnap, &me32));
784 (*close_snap) (hModuleSnap);
788 #endif /* DSO_WIN32 */