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));
99 if (fnamw == NULL) return NULL;
101 #if defined(_WIN32_WCE) && _WIN32_WCE>=101
102 if (!MultiByteToWideChar(CP_ACP,0,lpLibFileName,len_0,fnamw,len_0))
104 for (i=0;i<len_0;i++) fnamw[i]=(WCHAR)lpLibFileName[i];
106 return LoadLibraryW(fnamw);
110 /* Part of the hack in "win32_load" ... */
111 #define DSO_MAX_TRANSLATED_SIZE 256
113 static int win32_load(DSO *dso);
114 static int win32_unload(DSO *dso);
115 static void *win32_bind_var(DSO *dso, const char *symname);
116 static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname);
118 static int win32_unbind_var(DSO *dso, char *symname, void *symptr);
119 static int win32_unbind_func(DSO *dso, char *symname, DSO_FUNC_TYPE symptr);
120 static int win32_init(DSO *dso);
121 static int win32_finish(DSO *dso);
122 static long win32_ctrl(DSO *dso, int cmd, long larg, void *parg);
124 static char *win32_name_converter(DSO *dso, const char *filename);
125 static char *win32_merger(DSO *dso, const char *filespec1,
126 const char *filespec2);
128 static const char *openssl_strnchr(const char *string, int c, size_t len);
130 static DSO_METHOD dso_meth_win32 = {
131 "OpenSSL 'win32' shared library method",
136 /* For now, "unbind" doesn't exist */
138 NULL, /* unbind_var */
139 NULL, /* unbind_func */
142 win32_name_converter,
148 DSO_METHOD *DSO_METHOD_win32(void)
150 return(&dso_meth_win32);
153 /* For this DSO_METHOD, our meth_data STACK will contain;
154 * (i) a pointer to the handle (HINSTANCE) returned from
155 * LoadLibrary(), and copied.
158 static int win32_load(DSO *dso)
160 HINSTANCE h = NULL, *p = NULL;
161 /* See applicable comments from dso_dl.c */
162 char *filename = DSO_convert_filename(dso, NULL);
166 DSOerr(DSO_F_WIN32_LOAD,DSO_R_NO_FILENAME);
169 h = LoadLibraryA(filename);
172 DSOerr(DSO_F_WIN32_LOAD,DSO_R_LOAD_FAILED);
173 ERR_add_error_data(3, "filename(", filename, ")");
176 p = (HINSTANCE *)OPENSSL_malloc(sizeof(HINSTANCE));
179 DSOerr(DSO_F_WIN32_LOAD,ERR_R_MALLOC_FAILURE);
183 if(!sk_push(dso->meth_data, (char *)p))
185 DSOerr(DSO_F_WIN32_LOAD,DSO_R_STACK_ERROR);
189 dso->loaded_filename = filename;
194 OPENSSL_free(filename);
202 static int win32_unload(DSO *dso)
207 DSOerr(DSO_F_WIN32_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
210 if(sk_num(dso->meth_data) < 1)
212 p = (HINSTANCE *)sk_pop(dso->meth_data);
215 DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_NULL_HANDLE);
220 DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_UNLOAD_FAILED);
221 /* We should push the value back onto the stack in
222 * case of a retry. */
223 sk_push(dso->meth_data, (char *)p);
231 /* Using GetProcAddress for variables? TODO: Check this out in
232 * the Win32 API docs, there's probably a variant for variables. */
233 static void *win32_bind_var(DSO *dso, const char *symname)
238 if((dso == NULL) || (symname == NULL))
240 DSOerr(DSO_F_WIN32_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER);
243 if(sk_num(dso->meth_data) < 1)
245 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_STACK_ERROR);
248 ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
251 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_NULL_HANDLE);
254 sym = GetProcAddress(*ptr, symname);
257 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_SYM_FAILURE);
258 ERR_add_error_data(3, "symname(", symname, ")");
264 static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname)
269 if((dso == NULL) || (symname == NULL))
271 DSOerr(DSO_F_WIN32_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER);
274 if(sk_num(dso->meth_data) < 1)
276 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_STACK_ERROR);
279 ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
282 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_NULL_HANDLE);
285 sym = GetProcAddress(*ptr, symname);
288 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_SYM_FAILURE);
289 ERR_add_error_data(3, "symname(", symname, ")");
292 return((DSO_FUNC_TYPE)sym);
297 const char *node; int nodelen;
298 const char *device; int devicelen;
299 const char *predir; int predirlen;
300 const char *dir; int dirlen;
301 const char *file; int filelen;
304 static struct file_st *win32_splitter(DSO *dso, const char *filename,
305 int assume_last_is_dir)
307 struct file_st *result = NULL;
308 enum { IN_NODE, IN_DEVICE, IN_FILE } position;
309 const char *start = filename;
313 DSOerr(DSO_F_WIN32_SPLITTER,DSO_R_NO_FILENAME);
318 result = OPENSSL_malloc(sizeof(struct file_st));
321 DSOerr(DSO_F_WIN32_SPLITTER,
322 ERR_R_MALLOC_FAILURE);
326 memset(result, 0, sizeof(struct file_st));
327 position = IN_DEVICE;
329 if(filename[0] == '\\' && filename[1] == '\\'
330 || filename[0] == '/' && filename[1] == '/')
335 result->node = start;
343 if(position != IN_DEVICE)
345 DSOerr(DSO_F_WIN32_SPLITTER,
346 DSO_R_INCORRECT_FILE_SYNTAX);
350 result->device = start;
351 result->devicelen = filename - start;
358 if(position == IN_NODE)
360 result->nodelen = filename - start;
368 result->dirlen += filename - start;
372 if(position == IN_NODE)
374 result->nodelen = filename - start;
378 if(filename - start > 0)
380 if (assume_last_is_dir)
382 result->devicelen += filename - start;
386 result->file = start;
387 result->filelen = filename - start;
399 if(!result->nodelen) result->node = NULL;
400 if(!result->devicelen) result->device = NULL;
401 if(!result->dirlen) result->dir = NULL;
402 if(!result->filelen) result->file = NULL;
407 static char *win32_joiner(DSO *dso, const struct file_st *file_split)
409 int len = 0, offset = 0;
415 DSOerr(DSO_F_WIN32_JOINER,
416 ERR_R_PASSED_NULL_PARAMETER);
421 len += 2 + file_split->nodelen; /* 2 for starting \\ */
422 if(file_split->predir || file_split->dir || file_split->file)
423 len++; /* 1 for ending \ */
425 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))
432 len++; /* 1 for ending \ */
434 len += file_split->dirlen;
435 if(file_split->dir && file_split->file)
437 len++; /* 1 for ending \ */
439 len += file_split->filelen;
443 DSOerr(DSO_F_WIN32_JOINER, DSO_R_EMPTY_FILE_STRUCTURE);
447 result = OPENSSL_malloc(len + 1);
450 DSOerr(DSO_F_WIN32_JOINER,
451 ERR_R_MALLOC_FAILURE);
457 strcpy(&result[offset], "\\\\"); offset += 2;
458 strncpy(&result[offset], file_split->node,
459 file_split->nodelen); offset += file_split->nodelen;
460 if(file_split->predir || file_split->dir || file_split->file)
462 result[offset] = '\\'; offset++;
465 else if(file_split->device)
467 strncpy(&result[offset], file_split->device,
468 file_split->devicelen); offset += file_split->devicelen;
469 result[offset] = ':'; offset++;
471 start = file_split->predir;
472 while(file_split->predirlen > (start - file_split->predir))
474 const char *end = openssl_strnchr(start, '/',
475 file_split->predirlen - (start - file_split->predir));
478 + file_split->predirlen
479 - (start - file_split->predir);
480 strncpy(&result[offset], start,
481 end - start); offset += end - start;
482 result[offset] = '\\'; offset++;
485 if(file_split->predir && (file_split->dir || file_split->file))
487 result[offset] = '\\'; offset++;
489 start = file_split->dir;
490 while(file_split->dirlen > (start - file_split->dir))
492 const char *end = openssl_strnchr(start, '/',
493 file_split->dirlen - (start - file_split->dir));
497 - (start - file_split->dir);
498 strncpy(&result[offset], start,
499 end - start); offset += end - start;
500 result[offset] = '\\'; offset++;
503 if(file_split->dir && file_split->file)
505 result[offset] = '\\'; offset++;
507 strncpy(&result[offset], file_split->file,
508 file_split->filelen); offset += file_split->filelen;
509 result[offset] = '\0';
513 static char *win32_merger(DSO *dso, const char *filespec1, const char *filespec2)
516 struct file_st *filespec1_split = NULL;
517 struct file_st *filespec2_split = NULL;
519 if(!filespec1 && !filespec2)
521 DSOerr(DSO_F_WIN32_MERGER,
522 ERR_R_PASSED_NULL_PARAMETER);
527 merged = OPENSSL_malloc(strlen(filespec1) + 1);
530 DSOerr(DSO_F_WIN32_MERGER,
531 ERR_R_MALLOC_FAILURE);
534 strcpy(merged, filespec1);
538 merged = OPENSSL_malloc(strlen(filespec2) + 1);
541 DSOerr(DSO_F_WIN32_MERGER,
542 ERR_R_MALLOC_FAILURE);
545 strcpy(merged, filespec2);
549 filespec1_split = win32_splitter(dso, filespec1, 1);
550 if (!filespec1_split)
552 DSOerr(DSO_F_WIN32_MERGER,
553 ERR_R_MALLOC_FAILURE);
556 filespec2_split = win32_splitter(dso, filespec2, 0);
557 if (!filespec1_split)
559 DSOerr(DSO_F_WIN32_MERGER,
560 ERR_R_MALLOC_FAILURE);
561 OPENSSL_free(filespec1_split);
565 /* Fill in into filespec1_split */
566 if (!filespec1_split->node && !filespec1_split->device)
568 filespec1_split->node = filespec2_split->node;
569 filespec1_split->nodelen = filespec2_split->nodelen;
570 filespec1_split->device = filespec2_split->device;
571 filespec1_split->devicelen = filespec2_split->devicelen;
573 if (!filespec1_split->dir)
575 filespec1_split->dir = filespec2_split->dir;
576 filespec1_split->dirlen = filespec2_split->dirlen;
578 else if (filespec1_split->dir[0] != '\\'
579 && filespec1_split->dir[0] != '/')
581 filespec1_split->predir = filespec2_split->dir;
582 filespec1_split->predirlen = filespec2_split->dirlen;
584 if (!filespec1_split->file)
586 filespec1_split->file = filespec2_split->file;
587 filespec1_split->filelen = filespec2_split->filelen;
590 merged = win32_joiner(dso, filespec1_split);
595 static char *win32_name_converter(DSO *dso, const char *filename)
600 len = strlen(filename);
601 transform = ((strstr(filename, "/") == NULL) &&
602 (strstr(filename, "\\") == NULL) &&
603 (strstr(filename, ":") == NULL));
605 /* We will convert this to "%s.dll" */
606 translated = OPENSSL_malloc(len + 5);
608 /* We will simply duplicate filename */
609 translated = OPENSSL_malloc(len + 1);
610 if(translated == NULL)
612 DSOerr(DSO_F_WIN32_NAME_CONVERTER,
613 DSO_R_NAME_TRANSLATION_FAILED);
617 sprintf(translated, "%s.dll", filename);
619 sprintf(translated, "%s", filename);
623 static const char *openssl_strnchr(const char *string, int c, size_t len)
627 for (i = 0, p = string; i < len && *p; i++, p++)
636 #endif /* OPENSSL_SYS_WIN32 */