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
90 /* Part of the hack in "win32_load" ... */
91 #define DSO_MAX_TRANSLATED_SIZE 256
93 static int win32_load(DSO *dso);
94 static int win32_unload(DSO *dso);
95 static void *win32_bind_var(DSO *dso, const char *symname);
96 static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname);
98 static int win32_unbind_var(DSO *dso, char *symname, void *symptr);
99 static int win32_unbind_func(DSO *dso, char *symname, DSO_FUNC_TYPE symptr);
100 static int win32_init(DSO *dso);
101 static int win32_finish(DSO *dso);
102 static long win32_ctrl(DSO *dso, int cmd, long larg, void *parg);
104 static char *win32_name_converter(DSO *dso, const char *filename);
105 static char *win32_merger(DSO *dso, const char *filespec1,
106 const char *filespec2);
107 static int win32_pathbyaddr(void *addr,char *path,int sz);
109 static const char *openssl_strnchr(const char *string, int c, size_t len);
111 static DSO_METHOD dso_meth_win32 = {
112 "OpenSSL 'win32' shared library method",
117 /* For now, "unbind" doesn't exist */
119 NULL, /* unbind_var */
120 NULL, /* unbind_func */
123 win32_name_converter,
130 DSO_METHOD *DSO_METHOD_win32(void)
132 return(&dso_meth_win32);
135 /* For this DSO_METHOD, our meth_data STACK will contain;
136 * (i) a pointer to the handle (HINSTANCE) returned from
137 * LoadLibrary(), and copied.
140 static int win32_load(DSO *dso)
142 HINSTANCE h = NULL, *p = NULL;
143 /* See applicable comments from dso_dl.c */
144 char *filename = DSO_convert_filename(dso, NULL);
148 DSOerr(DSO_F_WIN32_LOAD,DSO_R_NO_FILENAME);
151 h = LoadLibraryA(filename);
154 DSOerr(DSO_F_WIN32_LOAD,DSO_R_LOAD_FAILED);
155 ERR_add_error_data(3, "filename(", filename, ")");
158 p = (HINSTANCE *)OPENSSL_malloc(sizeof(HINSTANCE));
161 DSOerr(DSO_F_WIN32_LOAD,ERR_R_MALLOC_FAILURE);
165 if(!sk_push(dso->meth_data, (char *)p))
167 DSOerr(DSO_F_WIN32_LOAD,DSO_R_STACK_ERROR);
171 dso->loaded_filename = filename;
176 OPENSSL_free(filename);
184 static int win32_unload(DSO *dso)
189 DSOerr(DSO_F_WIN32_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
192 if(sk_num(dso->meth_data) < 1)
194 p = (HINSTANCE *)sk_pop(dso->meth_data);
197 DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_NULL_HANDLE);
202 DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_UNLOAD_FAILED);
203 /* We should push the value back onto the stack in
204 * case of a retry. */
205 sk_push(dso->meth_data, (char *)p);
213 /* Using GetProcAddress for variables? TODO: Check this out in
214 * the Win32 API docs, there's probably a variant for variables. */
215 static void *win32_bind_var(DSO *dso, const char *symname)
220 if((dso == NULL) || (symname == NULL))
222 DSOerr(DSO_F_WIN32_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER);
225 if(sk_num(dso->meth_data) < 1)
227 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_STACK_ERROR);
230 ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
233 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_NULL_HANDLE);
236 sym = GetProcAddress(*ptr, symname);
239 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_SYM_FAILURE);
240 ERR_add_error_data(3, "symname(", symname, ")");
246 static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname)
251 if((dso == NULL) || (symname == NULL))
253 DSOerr(DSO_F_WIN32_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER);
256 if(sk_num(dso->meth_data) < 1)
258 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_STACK_ERROR);
261 ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
264 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_NULL_HANDLE);
267 sym = GetProcAddress(*ptr, symname);
270 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_SYM_FAILURE);
271 ERR_add_error_data(3, "symname(", symname, ")");
274 return((DSO_FUNC_TYPE)sym);
279 const char *node; int nodelen;
280 const char *device; int devicelen;
281 const char *predir; int predirlen;
282 const char *dir; int dirlen;
283 const char *file; int filelen;
286 static struct file_st *win32_splitter(DSO *dso, const char *filename,
287 int assume_last_is_dir)
289 struct file_st *result = NULL;
290 enum { IN_NODE, IN_DEVICE, IN_FILE } position;
291 const char *start = filename;
295 DSOerr(DSO_F_WIN32_SPLITTER,DSO_R_NO_FILENAME);
300 result = OPENSSL_malloc(sizeof(struct file_st));
303 DSOerr(DSO_F_WIN32_SPLITTER,
304 ERR_R_MALLOC_FAILURE);
308 memset(result, 0, sizeof(struct file_st));
309 position = IN_DEVICE;
311 if(filename[0] == '\\' && filename[1] == '\\'
312 || filename[0] == '/' && filename[1] == '/')
317 result->node = start;
325 if(position != IN_DEVICE)
327 DSOerr(DSO_F_WIN32_SPLITTER,
328 DSO_R_INCORRECT_FILE_SYNTAX);
332 result->device = start;
333 result->devicelen = filename - start;
340 if(position == IN_NODE)
342 result->nodelen = filename - start;
350 result->dirlen += filename - start;
354 if(position == IN_NODE)
356 result->nodelen = filename - start;
360 if(filename - start > 0)
362 if (assume_last_is_dir)
364 result->devicelen += filename - start;
368 result->file = start;
369 result->filelen = filename - start;
381 if(!result->nodelen) result->node = NULL;
382 if(!result->devicelen) result->device = NULL;
383 if(!result->dirlen) result->dir = NULL;
384 if(!result->filelen) result->file = NULL;
389 static char *win32_joiner(DSO *dso, const struct file_st *file_split)
391 int len = 0, offset = 0;
397 DSOerr(DSO_F_WIN32_JOINER,
398 ERR_R_PASSED_NULL_PARAMETER);
403 len += 2 + file_split->nodelen; /* 2 for starting \\ */
404 if(file_split->predir || file_split->dir || file_split->file)
405 len++; /* 1 for ending \ */
407 else if(file_split->device)
409 len += file_split->devicelen + 1; /* 1 for ending : */
411 len += file_split->predirlen;
412 if(file_split->predir && (file_split->dir || file_split->file))
414 len++; /* 1 for ending \ */
416 len += file_split->dirlen;
417 if(file_split->dir && file_split->file)
419 len++; /* 1 for ending \ */
421 len += file_split->filelen;
425 DSOerr(DSO_F_WIN32_JOINER, DSO_R_EMPTY_FILE_STRUCTURE);
429 result = OPENSSL_malloc(len + 1);
432 DSOerr(DSO_F_WIN32_JOINER,
433 ERR_R_MALLOC_FAILURE);
439 strcpy(&result[offset], "\\\\"); offset += 2;
440 strncpy(&result[offset], file_split->node,
441 file_split->nodelen); offset += file_split->nodelen;
442 if(file_split->predir || file_split->dir || file_split->file)
444 result[offset] = '\\'; offset++;
447 else if(file_split->device)
449 strncpy(&result[offset], file_split->device,
450 file_split->devicelen); offset += file_split->devicelen;
451 result[offset] = ':'; offset++;
453 start = file_split->predir;
454 while(file_split->predirlen > (start - file_split->predir))
456 const char *end = openssl_strnchr(start, '/',
457 file_split->predirlen - (start - file_split->predir));
460 + file_split->predirlen
461 - (start - file_split->predir);
462 strncpy(&result[offset], start,
463 end - start); offset += end - start;
464 result[offset] = '\\'; offset++;
467 if(file_split->predir && (file_split->dir || file_split->file))
469 result[offset] = '\\'; offset++;
471 start = file_split->dir;
472 while(file_split->dirlen > (start - file_split->dir))
474 const char *end = openssl_strnchr(start, '/',
475 file_split->dirlen - (start - file_split->dir));
479 - (start - file_split->dir);
480 strncpy(&result[offset], start,
481 end - start); offset += end - start;
482 result[offset] = '\\'; offset++;
485 if(file_split->dir && file_split->file)
487 result[offset] = '\\'; offset++;
489 strncpy(&result[offset], file_split->file,
490 file_split->filelen); offset += file_split->filelen;
491 result[offset] = '\0';
495 static char *win32_merger(DSO *dso, const char *filespec1, const char *filespec2)
498 struct file_st *filespec1_split = NULL;
499 struct file_st *filespec2_split = NULL;
501 if(!filespec1 && !filespec2)
503 DSOerr(DSO_F_WIN32_MERGER,
504 ERR_R_PASSED_NULL_PARAMETER);
509 merged = OPENSSL_malloc(strlen(filespec1) + 1);
512 DSOerr(DSO_F_WIN32_MERGER,
513 ERR_R_MALLOC_FAILURE);
516 strcpy(merged, filespec1);
520 merged = OPENSSL_malloc(strlen(filespec2) + 1);
523 DSOerr(DSO_F_WIN32_MERGER,
524 ERR_R_MALLOC_FAILURE);
527 strcpy(merged, filespec2);
531 filespec1_split = win32_splitter(dso, filespec1, 1);
532 if (!filespec1_split)
534 DSOerr(DSO_F_WIN32_MERGER,
535 ERR_R_MALLOC_FAILURE);
538 filespec2_split = win32_splitter(dso, filespec2, 0);
539 if (!filespec1_split)
541 DSOerr(DSO_F_WIN32_MERGER,
542 ERR_R_MALLOC_FAILURE);
543 OPENSSL_free(filespec1_split);
547 /* Fill in into filespec1_split */
548 if (!filespec1_split->node && !filespec1_split->device)
550 filespec1_split->node = filespec2_split->node;
551 filespec1_split->nodelen = filespec2_split->nodelen;
552 filespec1_split->device = filespec2_split->device;
553 filespec1_split->devicelen = filespec2_split->devicelen;
555 if (!filespec1_split->dir)
557 filespec1_split->dir = filespec2_split->dir;
558 filespec1_split->dirlen = filespec2_split->dirlen;
560 else if (filespec1_split->dir[0] != '\\'
561 && filespec1_split->dir[0] != '/')
563 filespec1_split->predir = filespec2_split->dir;
564 filespec1_split->predirlen = filespec2_split->dirlen;
566 if (!filespec1_split->file)
568 filespec1_split->file = filespec2_split->file;
569 filespec1_split->filelen = filespec2_split->filelen;
572 merged = win32_joiner(dso, filespec1_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)
594 DSOerr(DSO_F_WIN32_NAME_CONVERTER,
595 DSO_R_NAME_TRANSLATION_FAILED);
599 sprintf(translated, "%s.dll", filename);
601 sprintf(translated, "%s", filename);
605 static const char *openssl_strnchr(const char *string, int c, size_t len)
609 for (i = 0, p = string; i < len && *p; i++, p++)
617 #include <tlhelp32.h>
619 # define DLLNAME "TOOLHELP.DLL"
621 # ifdef MODULEENTRY32
622 # undef MODULEENTRY32 /* unmask the ASCII version! */
624 # define DLLNAME "KERNEL32.DLL"
627 typedef HANDLE (WINAPI *CREATETOOLHELP32SNAPSHOT)(DWORD, DWORD);
628 typedef BOOL (WINAPI *CLOSETOOLHELP32SNAPSHOT)(HANDLE);
629 typedef BOOL (WINAPI *MODULE32)(HANDLE, MODULEENTRY32 *);
631 static int win32_pathbyaddr(void *addr,char *path,int sz)
634 HANDLE hModuleSnap = INVALID_HANDLE_VALUE;
636 CREATETOOLHELP32SNAPSHOT create_snap;
637 CLOSETOOLHELP32SNAPSHOT close_snap;
638 MODULE32 module_first, module_next;
643 union { int(*f)(void*,char*,int); void *p; } t =
644 { win32_pathbyaddr };
648 dll = LoadLibrary(TEXT(DLLNAME));
651 DSOerr(DSO_F_PATHBYADDR,DSO_R_UNSUPPORTED);
655 create_snap = (CREATETOOLHELP32SNAPSHOT)
656 GetProcAddress(dll,"CreateToolhelp32Snapshot");
657 if (create_snap == NULL)
659 DSOerr(DSO_F_PATHBYADDR,DSO_R_UNSUPPORTED);
662 /* We take the rest for granted... */
664 close_snap = (CLOSETOOLHELP32SNAPSHOT)
665 GetProcAddress(dll,"CloseToolhelp32Snapshot");
667 close_snap = (CLOSETOOLHELP32SNAPSHOT)CloseHandle;
669 module_first = (MODULE32)GetProcAddress(dll,"Module32First");
670 module_next = (MODULE32)GetProcAddress(dll,"Module32Next");
672 hModuleSnap = (*create_snap)(TH32CS_SNAPMODULE,0);
673 if( hModuleSnap == INVALID_HANDLE_VALUE )
676 DSOerr(DSO_F_PATHBYADDR,DSO_R_UNSUPPORTED);
680 me32.dwSize = sizeof(me32);
682 if(!(*module_first)(hModuleSnap,&me32))
684 (*close_snap)(hModuleSnap);
686 DSOerr(DSO_F_PATHBYADDR,DSO_R_FAILURE);
691 if ((BYTE *)addr >= me32.modBaseAddr &&
692 (BYTE *)addr < me32.modBaseAddr+me32.modBaseSize)
694 (*close_snap)(hModuleSnap);
697 # if _WIN32_WCE >= 101
698 return WideCharToMultiByte(CP_ACP,0,me32.szExePath,-1,
701 len = (int)wcslen(me32.szExePath);
702 if (sz <= 0) return len+1;
703 if (len >= sz) len=sz-1;
705 path[i] = (char)me32.szExePath[i];
710 len = (int)strlen(me32.szExePath);
711 if (sz <= 0) return len+1;
712 if (len >= sz) len=sz-1;
713 memcpy(path,me32.szExePath,len);
718 } while((*module_next)(hModuleSnap, &me32));
720 (*close_snap)(hModuleSnap);
724 #endif /* DSO_WIN32 */