1 /* dso_win32.c -*- mode:C; c-file-style: "eay" -*- */
2 /* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 2000 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
62 #include <openssl/dso.h>
64 #if !defined(DSO_WIN32)
65 DSO_METHOD *DSO_METHOD_win32(void)
71 /* Part of the hack in "win32_load" ... */
72 #define DSO_MAX_TRANSLATED_SIZE 256
74 static int win32_load(DSO *dso);
75 static int win32_unload(DSO *dso);
76 static void *win32_bind_var(DSO *dso, const char *symname);
77 static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname);
79 static int win32_unbind_var(DSO *dso, char *symname, void *symptr);
80 static int win32_unbind_func(DSO *dso, char *symname, DSO_FUNC_TYPE symptr);
81 static int win32_init(DSO *dso);
82 static int win32_finish(DSO *dso);
83 static long win32_ctrl(DSO *dso, int cmd, long larg, void *parg);
85 static char *win32_name_converter(DSO *dso, const char *filename);
86 static char *win32_merger(DSO *dso, const char *filespec1,
87 const char *filespec2);
88 static int win32_pathbyaddr(void *addr,char *path,int sz);
90 static const char *openssl_strnchr(const char *string, int c, size_t len);
92 static DSO_METHOD dso_meth_win32 = {
93 "OpenSSL 'win32' shared library method",
98 /* For now, "unbind" doesn't exist */
100 NULL, /* unbind_var */
101 NULL, /* unbind_func */
104 win32_name_converter,
111 DSO_METHOD *DSO_METHOD_win32(void)
113 return(&dso_meth_win32);
116 /* For this DSO_METHOD, our meth_data STACK will contain;
117 * (i) a pointer to the handle (HINSTANCE) returned from
118 * LoadLibrary(), and copied.
121 static int win32_load(DSO *dso)
123 HINSTANCE h = NULL, *p = NULL;
124 /* See applicable comments from dso_dl.c */
125 char *filename = DSO_convert_filename(dso, NULL);
129 DSOerr(DSO_F_WIN32_LOAD,DSO_R_NO_FILENAME);
132 h = LoadLibraryA(filename);
135 DSOerr(DSO_F_WIN32_LOAD,DSO_R_LOAD_FAILED);
136 ERR_add_error_data(3, "filename(", filename, ")");
139 p = (HINSTANCE *)OPENSSL_malloc(sizeof(HINSTANCE));
142 DSOerr(DSO_F_WIN32_LOAD,ERR_R_MALLOC_FAILURE);
146 if(!sk_push(dso->meth_data, (char *)p))
148 DSOerr(DSO_F_WIN32_LOAD,DSO_R_STACK_ERROR);
152 dso->loaded_filename = filename;
157 OPENSSL_free(filename);
165 static int win32_unload(DSO *dso)
170 DSOerr(DSO_F_WIN32_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
173 if(sk_num(dso->meth_data) < 1)
175 p = (HINSTANCE *)sk_pop(dso->meth_data);
178 DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_NULL_HANDLE);
183 DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_UNLOAD_FAILED);
184 /* We should push the value back onto the stack in
185 * case of a retry. */
186 sk_push(dso->meth_data, (char *)p);
194 /* Using GetProcAddress for variables? TODO: Check this out in
195 * the Win32 API docs, there's probably a variant for variables. */
196 static void *win32_bind_var(DSO *dso, const char *symname)
201 if((dso == NULL) || (symname == NULL))
203 DSOerr(DSO_F_WIN32_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER);
206 if(sk_num(dso->meth_data) < 1)
208 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_STACK_ERROR);
211 ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
214 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_NULL_HANDLE);
217 sym = GetProcAddress(*ptr, symname);
220 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_SYM_FAILURE);
221 ERR_add_error_data(3, "symname(", symname, ")");
227 static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname)
232 if((dso == NULL) || (symname == NULL))
234 DSOerr(DSO_F_WIN32_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER);
237 if(sk_num(dso->meth_data) < 1)
239 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_STACK_ERROR);
242 ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
245 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_NULL_HANDLE);
248 sym = GetProcAddress(*ptr, symname);
251 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_SYM_FAILURE);
252 ERR_add_error_data(3, "symname(", symname, ")");
255 return((DSO_FUNC_TYPE)sym);
260 const char *node; int nodelen;
261 const char *device; int devicelen;
262 const char *predir; int predirlen;
263 const char *dir; int dirlen;
264 const char *file; int filelen;
267 static struct file_st *win32_splitter(DSO *dso, const char *filename,
268 int assume_last_is_dir)
270 struct file_st *result = NULL;
271 enum { IN_NODE, IN_DEVICE, IN_FILE } position;
272 const char *start = filename;
276 DSOerr(DSO_F_WIN32_SPLITTER,DSO_R_NO_FILENAME);
281 result = OPENSSL_malloc(sizeof(struct file_st));
284 DSOerr(DSO_F_WIN32_SPLITTER,
285 ERR_R_MALLOC_FAILURE);
289 memset(result, 0, sizeof(struct file_st));
290 position = IN_DEVICE;
292 if(filename[0] == '\\' && filename[1] == '\\'
293 || filename[0] == '/' && filename[1] == '/')
298 result->node = start;
306 if(position != IN_DEVICE)
308 DSOerr(DSO_F_WIN32_SPLITTER,
309 DSO_R_INCORRECT_FILE_SYNTAX);
313 result->device = start;
314 result->devicelen = filename - start;
321 if(position == IN_NODE)
323 result->nodelen = filename - start;
331 result->dirlen += filename - start;
335 if(position == IN_NODE)
337 result->nodelen = filename - start;
341 if(filename - start > 0)
343 if (assume_last_is_dir)
345 result->devicelen += filename - start;
349 result->file = start;
350 result->filelen = filename - start;
362 if(!result->nodelen) result->node = NULL;
363 if(!result->devicelen) result->device = NULL;
364 if(!result->dirlen) result->dir = NULL;
365 if(!result->filelen) result->file = NULL;
370 static char *win32_joiner(DSO *dso, const struct file_st *file_split)
372 int len = 0, offset = 0;
378 DSOerr(DSO_F_WIN32_JOINER,
379 ERR_R_PASSED_NULL_PARAMETER);
384 len += 2 + file_split->nodelen; /* 2 for starting \\ */
385 if(file_split->predir || file_split->dir || file_split->file)
386 len++; /* 1 for ending \ */
388 else if(file_split->device)
390 len += file_split->devicelen + 1; /* 1 for ending : */
392 len += file_split->predirlen;
393 if(file_split->predir && (file_split->dir || file_split->file))
395 len++; /* 1 for ending \ */
397 len += file_split->dirlen;
398 if(file_split->dir && file_split->file)
400 len++; /* 1 for ending \ */
402 len += file_split->filelen;
406 DSOerr(DSO_F_WIN32_JOINER, DSO_R_EMPTY_FILE_STRUCTURE);
410 result = OPENSSL_malloc(len + 1);
413 DSOerr(DSO_F_WIN32_JOINER,
414 ERR_R_MALLOC_FAILURE);
420 strcpy(&result[offset], "\\\\"); offset += 2;
421 strncpy(&result[offset], file_split->node,
422 file_split->nodelen); offset += file_split->nodelen;
423 if(file_split->predir || file_split->dir || file_split->file)
425 result[offset] = '\\'; offset++;
428 else if(file_split->device)
430 strncpy(&result[offset], file_split->device,
431 file_split->devicelen); offset += file_split->devicelen;
432 result[offset] = ':'; offset++;
434 start = file_split->predir;
435 while(file_split->predirlen > (start - file_split->predir))
437 const char *end = openssl_strnchr(start, '/',
438 file_split->predirlen - (start - file_split->predir));
441 + file_split->predirlen
442 - (start - file_split->predir);
443 strncpy(&result[offset], start,
444 end - start); offset += end - start;
445 result[offset] = '\\'; offset++;
448 if(file_split->predir && (file_split->dir || file_split->file))
450 result[offset] = '\\'; offset++;
452 start = file_split->dir;
453 while(file_split->dirlen > (start - file_split->dir))
455 const char *end = openssl_strnchr(start, '/',
456 file_split->dirlen - (start - file_split->dir));
460 - (start - file_split->dir);
461 strncpy(&result[offset], start,
462 end - start); offset += end - start;
463 result[offset] = '\\'; offset++;
466 if(file_split->dir && file_split->file)
468 result[offset] = '\\'; offset++;
470 strncpy(&result[offset], file_split->file,
471 file_split->filelen); offset += file_split->filelen;
472 result[offset] = '\0';
476 static char *win32_merger(DSO *dso, const char *filespec1, const char *filespec2)
479 struct file_st *filespec1_split = NULL;
480 struct file_st *filespec2_split = NULL;
482 if(!filespec1 && !filespec2)
484 DSOerr(DSO_F_WIN32_MERGER,
485 ERR_R_PASSED_NULL_PARAMETER);
490 merged = OPENSSL_malloc(strlen(filespec1) + 1);
493 DSOerr(DSO_F_WIN32_MERGER,
494 ERR_R_MALLOC_FAILURE);
497 strcpy(merged, filespec1);
501 merged = OPENSSL_malloc(strlen(filespec2) + 1);
504 DSOerr(DSO_F_WIN32_MERGER,
505 ERR_R_MALLOC_FAILURE);
508 strcpy(merged, filespec2);
512 filespec1_split = win32_splitter(dso, filespec1, 1);
513 if (!filespec1_split)
515 DSOerr(DSO_F_WIN32_MERGER,
516 ERR_R_MALLOC_FAILURE);
519 filespec2_split = win32_splitter(dso, filespec2, 0);
520 if (!filespec1_split)
522 DSOerr(DSO_F_WIN32_MERGER,
523 ERR_R_MALLOC_FAILURE);
524 OPENSSL_free(filespec1_split);
528 /* Fill in into filespec1_split */
529 if (!filespec1_split->node && !filespec1_split->device)
531 filespec1_split->node = filespec2_split->node;
532 filespec1_split->nodelen = filespec2_split->nodelen;
533 filespec1_split->device = filespec2_split->device;
534 filespec1_split->devicelen = filespec2_split->devicelen;
536 if (!filespec1_split->dir)
538 filespec1_split->dir = filespec2_split->dir;
539 filespec1_split->dirlen = filespec2_split->dirlen;
541 else if (filespec1_split->dir[0] != '\\'
542 && filespec1_split->dir[0] != '/')
544 filespec1_split->predir = filespec2_split->dir;
545 filespec1_split->predirlen = filespec2_split->dirlen;
547 if (!filespec1_split->file)
549 filespec1_split->file = filespec2_split->file;
550 filespec1_split->filelen = filespec2_split->filelen;
553 merged = win32_joiner(dso, filespec1_split);
558 static char *win32_name_converter(DSO *dso, const char *filename)
563 len = strlen(filename);
564 transform = ((strstr(filename, "/") == NULL) &&
565 (strstr(filename, "\\") == NULL) &&
566 (strstr(filename, ":") == NULL));
568 /* We will convert this to "%s.dll" */
569 translated = OPENSSL_malloc(len + 5);
571 /* We will simply duplicate filename */
572 translated = OPENSSL_malloc(len + 1);
573 if(translated == NULL)
575 DSOerr(DSO_F_WIN32_NAME_CONVERTER,
576 DSO_R_NAME_TRANSLATION_FAILED);
580 sprintf(translated, "%s.dll", filename);
582 sprintf(translated, "%s", filename);
586 static const char *openssl_strnchr(const char *string, int c, size_t len)
590 for (i = 0, p = string; i < len && *p; i++, p++)
598 #include <tlhelp32.h>
600 # if _WIN32_WCE < 300
601 static FARPROC GetProcAddressA(HMODULE hModule,LPCSTR lpProcName)
603 WCHAR lpProcNameW[64];
606 for (i=0;lpProcName[i] && i<64;i++)
607 lpProcNameW[i] = (WCHAR)lpProcName[i];
608 if (i==64) return NULL;
611 return GetProcAddressW(hModule,lpProcNameW);
614 # undef GetProcAddress
615 # define GetProcAddress GetProcAddressA
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;
638 if (addr == NULL) addr = win32_pathbyaddr;
640 dll = LoadLibrary(TEXT(DLLNAME));
643 DSOerr(DSO_F_PATHBYADDR,DSO_R_UNSUPPORTED);
647 create_snap = (CREATETOOLHELP32SNAPSHOT)
648 GetProcAddress(dll,"CreateToolhelp32Snapshot");
649 if (create_snap == NULL)
651 DSOerr(DSO_F_PATHBYADDR,DSO_R_UNSUPPORTED);
654 /* We take the rest for granted... */
656 close_snap = (CLOSETOOLHELP32SNAPSHOT)
657 GetProcAddress(dll,"CloseToolhelp32Snapshot");
659 close_snap = (CLOSETOOLHELP32SNAPSHOT)CloseHandle;
661 module_first = (MODULE32)GetProcAddress(dll,"Module32First");
662 module_next = (MODULE32)GetProcAddress(dll,"Module32Next");
664 hModuleSnap = (*create_snap)(TH32CS_SNAPMODULE,0);
665 if( hModuleSnap == INVALID_HANDLE_VALUE )
668 DSOerr(DSO_F_PATHBYADDR,DSO_R_UNSUPPORTED);
672 me32.dwSize = sizeof(me32);
674 if(!(*module_first)(hModuleSnap,&me32))
676 (*close_snap)(hModuleSnap);
678 DSOerr(DSO_F_PATHBYADDR,DSO_R_FAILURE);
683 if ((BYTE *)addr >= me32.modBaseAddr &&
684 (BYTE *)addr < me32.modBaseAddr+me32.modBaseSize)
686 (*close_snap)(hModuleSnap);
689 # if _WIN32_WCE >= 101
690 return WideCharToMultiByte(CP_ACP,0,me32.szExePath,-1,
693 len = (int)wcslen(me32.szExePath);
694 if (sz <= 0) return len+1;
695 if (len >= sz) len=sz-1;
697 path[i] = (char)me32.szExePath[i];
702 len = (int)strlen(me32.szExePath);
703 if (sz <= 0) return len+1;
704 if (len >= sz) len=sz-1;
705 memcpy(path,me32.szExePath,len);
710 } while((*module_next)(hModuleSnap, &me32));
712 (*close_snap)(hModuleSnap);
716 #endif /* DSO_WIN32 */