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)
73 static FARPROC GetProcAddressA(HMODULE hModule,LPCSTR lpProcName)
75 WCHAR lpProcNameW[64];
78 for (i=0;lpProcName[i] && i<64;i++)
79 lpProcNameW[i] = (WCHAR)lpProcName[i];
80 if (i==64) return NULL;
83 return GetProcAddressW(hModule,lpProcNameW);
86 # undef GetProcAddress
87 # define GetProcAddress GetProcAddressA
89 static HINSTANCE LoadLibraryA(LPCSTR lpLibFileName)
92 size_t len_0=strlen(lpLibFileName)+1,i;
95 fnamw = (WCHAR *)_alloca (len_0*sizeof(WCHAR));
97 fnamw = (WCHAR *)alloca (len_0*sizeof(WCHAR));
101 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++) fnamw[i]=(WCHAR)lpLibFileName[i];
110 return LoadLibraryW(fnamw);
114 /* Part of the hack in "win32_load" ... */
115 #define DSO_MAX_TRANSLATED_SIZE 256
117 static int win32_load(DSO *dso);
118 static int win32_unload(DSO *dso);
119 static void *win32_bind_var(DSO *dso, const char *symname);
120 static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname);
122 static int win32_unbind_var(DSO *dso, char *symname, void *symptr);
123 static int win32_unbind_func(DSO *dso, char *symname, DSO_FUNC_TYPE symptr);
124 static int win32_init(DSO *dso);
125 static int win32_finish(DSO *dso);
126 static long win32_ctrl(DSO *dso, int cmd, long larg, void *parg);
128 static char *win32_name_converter(DSO *dso, const char *filename);
129 static char *win32_merger(DSO *dso, const char *filespec1,
130 const char *filespec2);
131 static int win32_pathbyaddr(void *addr,char *path,int sz);
133 static const char *openssl_strnchr(const char *string, int c, size_t len);
135 static DSO_METHOD dso_meth_win32 = {
136 "OpenSSL 'win32' shared library method",
141 /* For now, "unbind" doesn't exist */
143 NULL, /* unbind_var */
144 NULL, /* unbind_func */
147 win32_name_converter,
154 DSO_METHOD *DSO_METHOD_win32(void)
156 return(&dso_meth_win32);
159 /* For this DSO_METHOD, our meth_data STACK will contain;
160 * (i) a pointer to the handle (HINSTANCE) returned from
161 * LoadLibrary(), and copied.
164 static int win32_load(DSO *dso)
166 HINSTANCE h = NULL, *p = NULL;
167 /* See applicable comments from dso_dl.c */
168 char *filename = DSO_convert_filename(dso, NULL);
172 DSOerr(DSO_F_WIN32_LOAD,DSO_R_NO_FILENAME);
175 h = LoadLibraryA(filename);
178 DSOerr(DSO_F_WIN32_LOAD,DSO_R_LOAD_FAILED);
179 ERR_add_error_data(3, "filename(", filename, ")");
182 p = (HINSTANCE *)OPENSSL_malloc(sizeof(HINSTANCE));
185 DSOerr(DSO_F_WIN32_LOAD,ERR_R_MALLOC_FAILURE);
189 if(!sk_push(dso->meth_data, (char *)p))
191 DSOerr(DSO_F_WIN32_LOAD,DSO_R_STACK_ERROR);
195 dso->loaded_filename = filename;
200 OPENSSL_free(filename);
208 static int win32_unload(DSO *dso)
213 DSOerr(DSO_F_WIN32_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
216 if(sk_num(dso->meth_data) < 1)
218 p = (HINSTANCE *)sk_pop(dso->meth_data);
221 DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_NULL_HANDLE);
226 DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_UNLOAD_FAILED);
227 /* We should push the value back onto the stack in
228 * case of a retry. */
229 sk_push(dso->meth_data, (char *)p);
237 /* Using GetProcAddress for variables? TODO: Check this out in
238 * the Win32 API docs, there's probably a variant for variables. */
239 static void *win32_bind_var(DSO *dso, const char *symname)
244 if((dso == NULL) || (symname == NULL))
246 DSOerr(DSO_F_WIN32_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER);
249 if(sk_num(dso->meth_data) < 1)
251 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_STACK_ERROR);
254 ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
257 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_NULL_HANDLE);
260 sym = GetProcAddress(*ptr, symname);
263 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_SYM_FAILURE);
264 ERR_add_error_data(3, "symname(", symname, ")");
270 static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname)
275 if((dso == NULL) || (symname == NULL))
277 DSOerr(DSO_F_WIN32_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER);
280 if(sk_num(dso->meth_data) < 1)
282 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_STACK_ERROR);
285 ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
288 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_NULL_HANDLE);
291 sym = GetProcAddress(*ptr, symname);
294 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_SYM_FAILURE);
295 ERR_add_error_data(3, "symname(", symname, ")");
298 return((DSO_FUNC_TYPE)sym);
303 const char *node; int nodelen;
304 const char *device; int devicelen;
305 const char *predir; int predirlen;
306 const char *dir; int dirlen;
307 const char *file; int filelen;
310 static struct file_st *win32_splitter(DSO *dso, const char *filename,
311 int assume_last_is_dir)
313 struct file_st *result = NULL;
314 enum { IN_NODE, IN_DEVICE, IN_FILE } position;
315 const char *start = filename;
320 DSOerr(DSO_F_WIN32_SPLITTER,DSO_R_NO_FILENAME);
325 result = OPENSSL_malloc(sizeof(struct file_st));
328 DSOerr(DSO_F_WIN32_SPLITTER,
329 ERR_R_MALLOC_FAILURE);
333 memset(result, 0, sizeof(struct file_st));
334 position = IN_DEVICE;
336 if((filename[0] == '\\' && filename[1] == '\\')
337 || (filename[0] == '/' && filename[1] == '/'))
342 result->node = start;
351 if(position != IN_DEVICE)
353 DSOerr(DSO_F_WIN32_SPLITTER,
354 DSO_R_INCORRECT_FILE_SYNTAX);
358 result->device = start;
359 result->devicelen = filename - start;
366 if(position == IN_NODE)
368 result->nodelen = filename - start;
373 else if(position == IN_DEVICE)
378 result->dirlen = filename - start;
384 result->dirlen += filename - start;
389 if(position == IN_NODE)
391 result->nodelen = filename - start;
395 if(filename - start > 0)
397 if (assume_last_is_dir)
399 if (position == IN_DEVICE)
409 result->file = start;
423 if(!result->nodelen) result->node = NULL;
424 if(!result->devicelen) result->device = NULL;
425 if(!result->dirlen) result->dir = NULL;
426 if(!result->filelen) result->file = NULL;
431 static char *win32_joiner(DSO *dso, const struct file_st *file_split)
433 int len = 0, offset = 0;
439 DSOerr(DSO_F_WIN32_JOINER,
440 ERR_R_PASSED_NULL_PARAMETER);
445 len += 2 + file_split->nodelen; /* 2 for starting \\ */
446 if(file_split->predir || file_split->dir || file_split->file)
447 len++; /* 1 for ending \ */
449 else if(file_split->device)
451 len += file_split->devicelen + 1; /* 1 for ending : */
453 len += file_split->predirlen;
454 if(file_split->predir && (file_split->dir || file_split->file))
456 len++; /* 1 for ending \ */
458 len += file_split->dirlen;
459 if(file_split->dir && file_split->file)
461 len++; /* 1 for ending \ */
463 len += file_split->filelen;
467 DSOerr(DSO_F_WIN32_JOINER, DSO_R_EMPTY_FILE_STRUCTURE);
471 result = OPENSSL_malloc(len + 1);
474 DSOerr(DSO_F_WIN32_JOINER,
475 ERR_R_MALLOC_FAILURE);
481 strcpy(&result[offset], "\\\\"); offset += 2;
482 strncpy(&result[offset], file_split->node,
483 file_split->nodelen); offset += file_split->nodelen;
484 if(file_split->predir || file_split->dir || file_split->file)
486 result[offset] = '\\'; offset++;
489 else if(file_split->device)
491 strncpy(&result[offset], file_split->device,
492 file_split->devicelen); offset += file_split->devicelen;
493 result[offset] = ':'; offset++;
495 start = file_split->predir;
496 while(file_split->predirlen > (start - file_split->predir))
498 const char *end = openssl_strnchr(start, '/',
499 file_split->predirlen - (start - file_split->predir));
502 + file_split->predirlen
503 - (start - file_split->predir);
504 strncpy(&result[offset], start,
505 end - start); offset += end - start;
506 result[offset] = '\\'; offset++;
509 #if 0 /* Not needed, since the directory converter above already appeneded
511 if(file_split->predir && (file_split->dir || file_split->file))
513 result[offset] = '\\'; offset++;
516 start = file_split->dir;
517 while(file_split->dirlen > (start - file_split->dir))
519 const char *end = openssl_strnchr(start, '/',
520 file_split->dirlen - (start - file_split->dir));
524 - (start - file_split->dir);
525 strncpy(&result[offset], start,
526 end - start); offset += end - start;
527 result[offset] = '\\'; offset++;
530 #if 0 /* Not needed, since the directory converter above already appeneded
532 if(file_split->dir && file_split->file)
534 result[offset] = '\\'; offset++;
537 strncpy(&result[offset], file_split->file,
538 file_split->filelen); offset += file_split->filelen;
539 result[offset] = '\0';
543 static char *win32_merger(DSO *dso, const char *filespec1, const char *filespec2)
546 struct file_st *filespec1_split = NULL;
547 struct file_st *filespec2_split = NULL;
549 if(!filespec1 && !filespec2)
551 DSOerr(DSO_F_WIN32_MERGER,
552 ERR_R_PASSED_NULL_PARAMETER);
557 merged = OPENSSL_malloc(strlen(filespec1) + 1);
560 DSOerr(DSO_F_WIN32_MERGER,
561 ERR_R_MALLOC_FAILURE);
564 strcpy(merged, filespec1);
568 merged = OPENSSL_malloc(strlen(filespec2) + 1);
571 DSOerr(DSO_F_WIN32_MERGER,
572 ERR_R_MALLOC_FAILURE);
575 strcpy(merged, filespec2);
579 filespec1_split = win32_splitter(dso, filespec1, 1);
580 if (!filespec1_split)
582 DSOerr(DSO_F_WIN32_MERGER,
583 ERR_R_MALLOC_FAILURE);
586 filespec2_split = win32_splitter(dso, filespec2, 0);
587 if (!filespec2_split)
589 DSOerr(DSO_F_WIN32_MERGER,
590 ERR_R_MALLOC_FAILURE);
591 OPENSSL_free(filespec1_split);
595 /* Fill in into filespec1_split */
596 if (!filespec1_split->node && !filespec1_split->device)
598 filespec1_split->node = filespec2_split->node;
599 filespec1_split->nodelen = filespec2_split->nodelen;
600 filespec1_split->device = filespec2_split->device;
601 filespec1_split->devicelen = filespec2_split->devicelen;
603 if (!filespec1_split->dir)
605 filespec1_split->dir = filespec2_split->dir;
606 filespec1_split->dirlen = filespec2_split->dirlen;
608 else if (filespec1_split->dir[0] != '\\'
609 && filespec1_split->dir[0] != '/')
611 filespec1_split->predir = filespec2_split->dir;
612 filespec1_split->predirlen = filespec2_split->dirlen;
614 if (!filespec1_split->file)
616 filespec1_split->file = filespec2_split->file;
617 filespec1_split->filelen = filespec2_split->filelen;
620 merged = win32_joiner(dso, filespec1_split);
625 static char *win32_name_converter(DSO *dso, const char *filename)
630 len = strlen(filename);
631 transform = ((strstr(filename, "/") == NULL) &&
632 (strstr(filename, "\\") == NULL) &&
633 (strstr(filename, ":") == NULL));
635 /* We will convert this to "%s.dll" */
636 translated = OPENSSL_malloc(len + 5);
638 /* We will simply duplicate filename */
639 translated = OPENSSL_malloc(len + 1);
640 if(translated == NULL)
642 DSOerr(DSO_F_WIN32_NAME_CONVERTER,
643 DSO_R_NAME_TRANSLATION_FAILED);
647 sprintf(translated, "%s.dll", filename);
649 sprintf(translated, "%s", filename);
653 static const char *openssl_strnchr(const char *string, int c, size_t len)
657 for (i = 0, p = string; i < len && *p; i++, p++)
665 #include <tlhelp32.h>
667 # define DLLNAME "TOOLHELP.DLL"
669 # ifdef MODULEENTRY32
670 # undef MODULEENTRY32 /* unmask the ASCII version! */
672 # define DLLNAME "KERNEL32.DLL"
675 typedef HANDLE (WINAPI *CREATETOOLHELP32SNAPSHOT)(DWORD, DWORD);
676 typedef BOOL (WINAPI *CLOSETOOLHELP32SNAPSHOT)(HANDLE);
677 typedef BOOL (WINAPI *MODULE32)(HANDLE, MODULEENTRY32 *);
679 static int win32_pathbyaddr(void *addr,char *path,int sz)
682 HANDLE hModuleSnap = INVALID_HANDLE_VALUE;
684 CREATETOOLHELP32SNAPSHOT create_snap;
685 CLOSETOOLHELP32SNAPSHOT close_snap;
686 MODULE32 module_first, module_next;
691 union { int(*f)(void*,char*,int); void *p; } t =
692 { win32_pathbyaddr };
696 dll = LoadLibrary(TEXT(DLLNAME));
699 DSOerr(DSO_F_PATHBYADDR,DSO_R_UNSUPPORTED);
703 create_snap = (CREATETOOLHELP32SNAPSHOT)
704 GetProcAddress(dll,"CreateToolhelp32Snapshot");
705 if (create_snap == NULL)
708 DSOerr(DSO_F_PATHBYADDR,DSO_R_UNSUPPORTED);
711 /* We take the rest for granted... */
713 close_snap = (CLOSETOOLHELP32SNAPSHOT)
714 GetProcAddress(dll,"CloseToolhelp32Snapshot");
716 close_snap = (CLOSETOOLHELP32SNAPSHOT)CloseHandle;
718 module_first = (MODULE32)GetProcAddress(dll,"Module32First");
719 module_next = (MODULE32)GetProcAddress(dll,"Module32Next");
721 hModuleSnap = (*create_snap)(TH32CS_SNAPMODULE,0);
722 if( hModuleSnap == INVALID_HANDLE_VALUE )
725 DSOerr(DSO_F_PATHBYADDR,DSO_R_UNSUPPORTED);
729 me32.dwSize = sizeof(me32);
731 if(!(*module_first)(hModuleSnap,&me32))
733 (*close_snap)(hModuleSnap);
735 DSOerr(DSO_F_PATHBYADDR,DSO_R_FAILURE);
740 if ((BYTE *)addr >= me32.modBaseAddr &&
741 (BYTE *)addr < me32.modBaseAddr+me32.modBaseSize)
743 (*close_snap)(hModuleSnap);
746 # if _WIN32_WCE >= 101
747 return WideCharToMultiByte(CP_ACP,0,me32.szExePath,-1,
750 len = (int)wcslen(me32.szExePath);
751 if (sz <= 0) return len+1;
752 if (len >= sz) len=sz-1;
754 path[i] = (char)me32.szExePath[i];
759 len = (int)strlen(me32.szExePath);
760 if (sz <= 0) return len+1;
761 if (len >= sz) len=sz-1;
762 memcpy(path,me32.szExePath,len);
767 } while((*module_next)(hModuleSnap, &me32));
769 (*close_snap)(hModuleSnap);
773 #endif /* DSO_WIN32 */