1 /* dso_win32.c -*- mode:C; c-file-style: "eay" -*- */
2 /* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
3 * project 2000.
4 */
5 /* ====================================================================
6 * Copyright (c) 2000 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
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
18 * distribution.
19 *
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/)"
24 *
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.
29 *
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.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
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 * ====================================================================
52 *
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).
56 *
57 */
58
59 #include <stdio.h>
60 #include <string.h>
61 #include "cryptlib.h"
62 #include <openssl/dso.h>
63
64 #if !defined(DSO_WIN32)
DSO_METHOD_win32(void)65 DSO_METHOD *DSO_METHOD_win32(void)
66 {
67 return NULL;
68 }
69 #else
70
71 #ifdef _WIN32_WCE
72 # if _WIN32_WCE < 300
GetProcAddressA(HMODULE hModule,LPCSTR lpProcName)73 static FARPROC GetProcAddressA(HMODULE hModule,LPCSTR lpProcName)
74 {
75 WCHAR lpProcNameW[64];
76 int i;
77
78 for (i=0;lpProcName[i] && i<64;i++)
79 lpProcNameW[i] = (WCHAR)lpProcName[i];
80 if (i==64) return NULL;
81 lpProcNameW[i] = 0;
82
83 return GetProcAddressW(hModule,lpProcNameW);
84 }
85 # endif
86 # undef GetProcAddress
87 # define GetProcAddress GetProcAddressA
88
LoadLibraryA(LPCSTR lpLibFileName)89 static HINSTANCE LoadLibraryA(LPCSTR lpLibFileName)
90 {
91 WCHAR *fnamw;
92 size_t len_0=strlen(lpLibFileName)+1,i;
93
94 #ifdef _MSC_VER
95 fnamw = (WCHAR *)_alloca (len_0*sizeof(WCHAR));
96 #else
97 fnamw = (WCHAR *)alloca (len_0*sizeof(WCHAR));
98 #endif
99 if (fnamw == NULL) return NULL;
100
101 #if defined(_WIN32_WCE) && _WIN32_WCE>=101
102 if (!MultiByteToWideChar(CP_ACP,0,lpLibFileName,len_0,fnamw,len_0))
103 #endif
104 for (i=0;i<len_0;i++) fnamw[i]=(WCHAR)lpLibFileName[i];
105
106 return LoadLibraryW(fnamw);
107 }
108 #endif
109
110 /* Part of the hack in "win32_load" ... */
111 #define DSO_MAX_TRANSLATED_SIZE 256
112
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);
117 #if 0
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);
123 #endif
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);
127
128 static const char *openssl_strnchr(const char *string, int c, size_t len);
129
130 static DSO_METHOD dso_meth_win32 = {
131 "OpenSSL 'win32' shared library method",
132 win32_load,
133 win32_unload,
134 win32_bind_var,
135 win32_bind_func,
136 /* For now, "unbind" doesn't exist */
137 #if 0
138 NULL, /* unbind_var */
139 NULL, /* unbind_func */
140 #endif
141 NULL, /* ctrl */
142 win32_name_converter,
143 win32_merger,
144 NULL, /* init */
145 NULL /* finish */
146 };
147
DSO_METHOD_win32(void)148 DSO_METHOD *DSO_METHOD_win32(void)
149 {
150 return(&dso_meth_win32);
151 }
152
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.
156 */
157
win32_load(DSO * dso)158 static int win32_load(DSO *dso)
159 {
160 HINSTANCE h = NULL, *p = NULL;
161 /* See applicable comments from dso_dl.c */
162 char *filename = DSO_convert_filename(dso, NULL);
163
164 if(filename == NULL)
165 {
166 DSOerr(DSO_F_WIN32_LOAD,DSO_R_NO_FILENAME);
167 goto err;
168 }
169 h = LoadLibraryA(filename);
170 if(h == NULL)
171 {
172 DSOerr(DSO_F_WIN32_LOAD,DSO_R_LOAD_FAILED);
173 ERR_add_error_data(3, "filename(", filename, ")");
174 goto err;
175 }
176 p = (HINSTANCE *)OPENSSL_malloc(sizeof(HINSTANCE));
177 if(p == NULL)
178 {
179 DSOerr(DSO_F_WIN32_LOAD,ERR_R_MALLOC_FAILURE);
180 goto err;
181 }
182 *p = h;
183 if(!sk_push(dso->meth_data, (char *)p))
184 {
185 DSOerr(DSO_F_WIN32_LOAD,DSO_R_STACK_ERROR);
186 goto err;
187 }
188 /* Success */
189 dso->loaded_filename = filename;
190 return(1);
191 err:
192 /* Cleanup !*/
193 if(filename != NULL)
194 OPENSSL_free(filename);
195 if(p != NULL)
196 OPENSSL_free(p);
197 if(h != NULL)
198 FreeLibrary(h);
199 return(0);
200 }
201
win32_unload(DSO * dso)202 static int win32_unload(DSO *dso)
203 {
204 HINSTANCE *p;
205 if(dso == NULL)
206 {
207 DSOerr(DSO_F_WIN32_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
208 return(0);
209 }
210 if(sk_num(dso->meth_data) < 1)
211 return(1);
212 p = (HINSTANCE *)sk_pop(dso->meth_data);
213 if(p == NULL)
214 {
215 DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_NULL_HANDLE);
216 return(0);
217 }
218 if(!FreeLibrary(*p))
219 {
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);
224 return(0);
225 }
226 /* Cleanup */
227 OPENSSL_free(p);
228 return(1);
229 }
230
231 /* Using GetProcAddress for variables? TODO: Check this out in
232 * the Win32 API docs, there's probably a variant for variables. */
win32_bind_var(DSO * dso,const char * symname)233 static void *win32_bind_var(DSO *dso, const char *symname)
234 {
235 HINSTANCE *ptr;
236 void *sym;
237
238 if((dso == NULL) || (symname == NULL))
239 {
240 DSOerr(DSO_F_WIN32_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER);
241 return(NULL);
242 }
243 if(sk_num(dso->meth_data) < 1)
244 {
245 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_STACK_ERROR);
246 return(NULL);
247 }
248 ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
249 if(ptr == NULL)
250 {
251 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_NULL_HANDLE);
252 return(NULL);
253 }
254 sym = GetProcAddress(*ptr, symname);
255 if(sym == NULL)
256 {
257 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_SYM_FAILURE);
258 ERR_add_error_data(3, "symname(", symname, ")");
259 return(NULL);
260 }
261 return(sym);
262 }
263
win32_bind_func(DSO * dso,const char * symname)264 static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname)
265 {
266 HINSTANCE *ptr;
267 void *sym;
268
269 if((dso == NULL) || (symname == NULL))
270 {
271 DSOerr(DSO_F_WIN32_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER);
272 return(NULL);
273 }
274 if(sk_num(dso->meth_data) < 1)
275 {
276 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_STACK_ERROR);
277 return(NULL);
278 }
279 ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
280 if(ptr == NULL)
281 {
282 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_NULL_HANDLE);
283 return(NULL);
284 }
285 sym = GetProcAddress(*ptr, symname);
286 if(sym == NULL)
287 {
288 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_SYM_FAILURE);
289 ERR_add_error_data(3, "symname(", symname, ")");
290 return(NULL);
291 }
292 return((DSO_FUNC_TYPE)sym);
293 }
294
295 struct file_st
296 {
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;
302 };
303
win32_splitter(DSO * dso,const char * filename,int assume_last_is_dir)304 static struct file_st *win32_splitter(DSO *dso, const char *filename,
305 int assume_last_is_dir)
306 {
307 struct file_st *result = NULL;
308 enum { IN_NODE, IN_DEVICE, IN_FILE } position;
309 const char *start = filename;
310
311 if (!filename)
312 {
313 DSOerr(DSO_F_WIN32_SPLITTER,DSO_R_NO_FILENAME);
314 /*goto err;*/
315 return(NULL);
316 }
317
318 result = OPENSSL_malloc(sizeof(struct file_st));
319 if(result == NULL)
320 {
321 DSOerr(DSO_F_WIN32_SPLITTER,
322 ERR_R_MALLOC_FAILURE);
323 return(NULL);
324 }
325
326 memset(result, 0, sizeof(struct file_st));
327 position = IN_DEVICE;
328
329 if(filename[0] == '\\' && filename[1] == '\\'
330 || filename[0] == '/' && filename[1] == '/')
331 {
332 position = IN_NODE;
333 filename += 2;
334 start = filename;
335 result->node = start;
336 }
337
338 do
339 {
340 switch(filename[0])
341 {
342 case ':':
343 if(position != IN_DEVICE)
344 {
345 DSOerr(DSO_F_WIN32_SPLITTER,
346 DSO_R_INCORRECT_FILE_SYNTAX);
347 /*goto err;*/
348 return(NULL);
349 }
350 result->device = start;
351 result->devicelen = filename - start;
352 position = IN_FILE;
353 start = ++filename;
354 result->dir = start;
355 break;
356 case '\\':
357 case '/':
358 if(position == IN_NODE)
359 {
360 result->nodelen = filename - start;
361 position = IN_FILE;
362 start = ++filename;
363 result->dir = start;
364 }
365 else
366 {
367 filename++;
368 result->dirlen += filename - start;
369 }
370 break;
371 case '\0':
372 if(position == IN_NODE)
373 {
374 result->nodelen = filename - start;
375 }
376 else
377 {
378 if(filename - start > 0)
379 {
380 if (assume_last_is_dir)
381 {
382 result->devicelen += filename - start;
383 }
384 else
385 {
386 result->file = start;
387 result->filelen = filename - start;
388 }
389 }
390 }
391 break;
392 default:
393 filename++;
394 break;
395 }
396 }
397 while(*filename);
398
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;
403
404 return(result);
405 }
406
win32_joiner(DSO * dso,const struct file_st * file_split)407 static char *win32_joiner(DSO *dso, const struct file_st *file_split)
408 {
409 int len = 0, offset = 0;
410 char *result = NULL;
411 const char *start;
412
413 if(!file_split)
414 {
415 DSOerr(DSO_F_WIN32_JOINER,
416 ERR_R_PASSED_NULL_PARAMETER);
417 return(NULL);
418 }
419 if(file_split->node)
420 {
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 \ */
424 }
425 else if(file_split->device)
426 {
427 len += file_split->devicelen + 1; /* 1 for ending : */
428 }
429 len += file_split->predirlen;
430 if(file_split->predir && (file_split->dir || file_split->file))
431 {
432 len++; /* 1 for ending \ */
433 }
434 len += file_split->dirlen;
435 if(file_split->dir && file_split->file)
436 {
437 len++; /* 1 for ending \ */
438 }
439 len += file_split->filelen;
440
441 if(!len)
442 {
443 DSOerr(DSO_F_WIN32_JOINER, DSO_R_EMPTY_FILE_STRUCTURE);
444 return(NULL);
445 }
446
447 result = OPENSSL_malloc(len + 1);
448 if (!result)
449 {
450 DSOerr(DSO_F_WIN32_JOINER,
451 ERR_R_MALLOC_FAILURE);
452 return(NULL);
453 }
454
455 if(file_split->node)
456 {
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)
461 {
462 result[offset] = '\\'; offset++;
463 }
464 }
465 else if(file_split->device)
466 {
467 strncpy(&result[offset], file_split->device,
468 file_split->devicelen); offset += file_split->devicelen;
469 result[offset] = ':'; offset++;
470 }
471 start = file_split->predir;
472 while(file_split->predirlen > (start - file_split->predir))
473 {
474 const char *end = openssl_strnchr(start, '/',
475 file_split->predirlen - (start - file_split->predir));
476 if(!end)
477 end = start
478 + file_split->predirlen
479 - (start - file_split->predir);
480 strncpy(&result[offset], start,
481 end - start); offset += end - start;
482 result[offset] = '\\'; offset++;
483 start = end + 1;
484 }
485 if(file_split->predir && (file_split->dir || file_split->file))
486 {
487 result[offset] = '\\'; offset++;
488 }
489 start = file_split->dir;
490 while(file_split->dirlen > (start - file_split->dir))
491 {
492 const char *end = openssl_strnchr(start, '/',
493 file_split->dirlen - (start - file_split->dir));
494 if(!end)
495 end = start
496 + file_split->dirlen
497 - (start - file_split->dir);
498 strncpy(&result[offset], start,
499 end - start); offset += end - start;
500 result[offset] = '\\'; offset++;
501 start = end + 1;
502 }
503 if(file_split->dir && file_split->file)
504 {
505 result[offset] = '\\'; offset++;
506 }
507 strncpy(&result[offset], file_split->file,
508 file_split->filelen); offset += file_split->filelen;
509 result[offset] = '\0';
510 return(result);
511 }
512
win32_merger(DSO * dso,const char * filespec1,const char * filespec2)513 static char *win32_merger(DSO *dso, const char *filespec1, const char *filespec2)
514 {
515 char *merged = NULL;
516 struct file_st *filespec1_split = NULL;
517 struct file_st *filespec2_split = NULL;
518
519 if(!filespec1 && !filespec2)
520 {
521 DSOerr(DSO_F_WIN32_MERGER,
522 ERR_R_PASSED_NULL_PARAMETER);
523 return(NULL);
524 }
525 if (!filespec2)
526 {
527 merged = OPENSSL_malloc(strlen(filespec1) + 1);
528 if(!merged)
529 {
530 DSOerr(DSO_F_WIN32_MERGER,
531 ERR_R_MALLOC_FAILURE);
532 return(NULL);
533 }
534 strcpy(merged, filespec1);
535 }
536 else if (!filespec1)
537 {
538 merged = OPENSSL_malloc(strlen(filespec2) + 1);
539 if(!merged)
540 {
541 DSOerr(DSO_F_WIN32_MERGER,
542 ERR_R_MALLOC_FAILURE);
543 return(NULL);
544 }
545 strcpy(merged, filespec2);
546 }
547 else
548 {
549 filespec1_split = win32_splitter(dso, filespec1, 1);
550 if (!filespec1_split)
551 {
552 DSOerr(DSO_F_WIN32_MERGER,
553 ERR_R_MALLOC_FAILURE);
554 return(NULL);
555 }
556 filespec2_split = win32_splitter(dso, filespec2, 0);
557 if (!filespec1_split)
558 {
559 DSOerr(DSO_F_WIN32_MERGER,
560 ERR_R_MALLOC_FAILURE);
561 OPENSSL_free(filespec1_split);
562 return(NULL);
563 }
564
565 /* Fill in into filespec1_split */
566 if (!filespec1_split->node && !filespec1_split->device)
567 {
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;
572 }
573 if (!filespec1_split->dir)
574 {
575 filespec1_split->dir = filespec2_split->dir;
576 filespec1_split->dirlen = filespec2_split->dirlen;
577 }
578 else if (filespec1_split->dir[0] != '\\'
579 && filespec1_split->dir[0] != '/')
580 {
581 filespec1_split->predir = filespec2_split->dir;
582 filespec1_split->predirlen = filespec2_split->dirlen;
583 }
584 if (!filespec1_split->file)
585 {
586 filespec1_split->file = filespec2_split->file;
587 filespec1_split->filelen = filespec2_split->filelen;
588 }
589
590 merged = win32_joiner(dso, filespec1_split);
591 }
592 return(merged);
593 }
594
win32_name_converter(DSO * dso,const char * filename)595 static char *win32_name_converter(DSO *dso, const char *filename)
596 {
597 char *translated;
598 int len, transform;
599
600 len = strlen(filename);
601 transform = ((strstr(filename, "/") == NULL) &&
602 (strstr(filename, "\\") == NULL) &&
603 (strstr(filename, ":") == NULL));
604 if(transform)
605 /* We will convert this to "%s.dll" */
606 translated = OPENSSL_malloc(len + 5);
607 else
608 /* We will simply duplicate filename */
609 translated = OPENSSL_malloc(len + 1);
610 if(translated == NULL)
611 {
612 DSOerr(DSO_F_WIN32_NAME_CONVERTER,
613 DSO_R_NAME_TRANSLATION_FAILED);
614 return(NULL);
615 }
616 if(transform)
617 sprintf(translated, "%s.dll", filename);
618 else
619 sprintf(translated, "%s", filename);
620 return(translated);
621 }
622
openssl_strnchr(const char * string,int c,size_t len)623 static const char *openssl_strnchr(const char *string, int c, size_t len)
624 {
625 size_t i;
626 const char *p;
627 for (i = 0, p = string; i < len && *p; i++, p++)
628 {
629 if (*p == c)
630 return p;
631 }
632 return NULL;
633 }
634
635
636 #endif /* OPENSSL_SYS_WIN32 */
637