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);
89 static const char *openssl_strnchr(const char *string, int c, size_t len);
91 static DSO_METHOD dso_meth_win32 = {
92 "OpenSSL 'win32' shared library method",
97 /* For now, "unbind" doesn't exist */
99 NULL, /* unbind_var */
100 NULL, /* unbind_func */
103 win32_name_converter,
109 DSO_METHOD *DSO_METHOD_win32(void)
111 return(&dso_meth_win32);
114 /* For this DSO_METHOD, our meth_data STACK will contain;
115 * (i) a pointer to the handle (HINSTANCE) returned from
116 * LoadLibrary(), and copied.
119 static int win32_load(DSO *dso)
121 HINSTANCE h = NULL, *p = NULL;
122 /* See applicable comments from dso_dl.c */
123 char *filename = DSO_convert_filename(dso, NULL);
127 DSOerr(DSO_F_WIN32_LOAD,DSO_R_NO_FILENAME);
130 h = LoadLibrary(filename);
133 DSOerr(DSO_F_WIN32_LOAD,DSO_R_LOAD_FAILED);
134 ERR_add_error_data(3, "filename(", filename, ")");
137 p = (HINSTANCE *)OPENSSL_malloc(sizeof(HINSTANCE));
140 DSOerr(DSO_F_WIN32_LOAD,ERR_R_MALLOC_FAILURE);
144 if(!sk_push(dso->meth_data, (char *)p))
146 DSOerr(DSO_F_WIN32_LOAD,DSO_R_STACK_ERROR);
150 dso->loaded_filename = filename;
155 OPENSSL_free(filename);
163 static int win32_unload(DSO *dso)
168 DSOerr(DSO_F_WIN32_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
171 if(sk_num(dso->meth_data) < 1)
173 p = (HINSTANCE *)sk_pop(dso->meth_data);
176 DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_NULL_HANDLE);
181 DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_UNLOAD_FAILED);
182 /* We should push the value back onto the stack in
183 * case of a retry. */
184 sk_push(dso->meth_data, (char *)p);
192 /* Using GetProcAddress for variables? TODO: Check this out in
193 * the Win32 API docs, there's probably a variant for variables. */
194 static void *win32_bind_var(DSO *dso, const char *symname)
199 if((dso == NULL) || (symname == NULL))
201 DSOerr(DSO_F_WIN32_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER);
204 if(sk_num(dso->meth_data) < 1)
206 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_STACK_ERROR);
209 ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
212 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_NULL_HANDLE);
215 sym = GetProcAddress(*ptr, symname);
218 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_SYM_FAILURE);
219 ERR_add_error_data(3, "symname(", symname, ")");
225 static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname)
230 if((dso == NULL) || (symname == NULL))
232 DSOerr(DSO_F_WIN32_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER);
235 if(sk_num(dso->meth_data) < 1)
237 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_STACK_ERROR);
240 ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
243 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_NULL_HANDLE);
246 sym = GetProcAddress(*ptr, symname);
249 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_SYM_FAILURE);
250 ERR_add_error_data(3, "symname(", symname, ")");
253 return((DSO_FUNC_TYPE)sym);
258 const char *node; int nodelen;
259 const char *device; int devicelen;
260 const char *predir; int predirlen;
261 const char *dir; int dirlen;
262 const char *file; int filelen;
265 static struct file_st *win32_splitter(DSO *dso, const char *filename,
266 int assume_last_is_dir)
268 struct file_st *result = NULL;
269 enum { IN_NODE, IN_DEVICE, IN_FILE } position;
270 const char *start = filename;
274 DSOerr(DSO_F_WIN32_SPLITTER,DSO_R_NO_FILENAME);
279 result = OPENSSL_malloc(sizeof(struct file_st));
282 DSOerr(DSO_F_WIN32_SPLITTER,
283 ERR_R_MALLOC_FAILURE);
287 memset(result, 0, sizeof(struct file_st));
288 position = IN_DEVICE;
290 if(filename[0] == '\\' && filename[1] == '\\'
291 || filename[0] == '/' && filename[1] == '/')
296 result->node = start;
304 if(position != IN_DEVICE)
306 DSOerr(DSO_F_WIN32_SPLITTER,
307 DSO_R_INCORRECT_FILE_SYNTAX);
311 result->device = start;
312 result->devicelen = filename - start;
319 if(position == IN_NODE)
321 result->nodelen = filename - start;
329 result->dirlen += filename - start;
333 if(position == IN_NODE)
335 result->nodelen = filename - start;
339 if(filename - start > 0)
341 if (assume_last_is_dir)
343 result->devicelen += filename - start;
347 result->file = start;
348 result->filelen = filename - start;
360 if(!result->nodelen) result->node = NULL;
361 if(!result->devicelen) result->device = NULL;
362 if(!result->dirlen) result->dir = NULL;
363 if(!result->filelen) result->file = NULL;
368 static char *win32_joiner(DSO *dso, const struct file_st *file_split)
370 int len = 0, offset = 0;
376 DSOerr(DSO_F_WIN32_JOINER,
377 ERR_R_PASSED_NULL_PARAMETER);
382 len += 2 + file_split->nodelen; /* 2 for starting \\ */
383 if(file_split->predir || file_split->dir || file_split->file)
384 len++; /* 1 for ending \ */
386 else if(file_split->device)
388 len += file_split->devicelen + 1; /* 1 for ending : */
390 len += file_split->predirlen;
391 if(file_split->predir && (file_split->dir || file_split->file))
393 len++; /* 1 for ending \ */
395 len += file_split->dirlen;
396 if(file_split->dir && file_split->file)
398 len++; /* 1 for ending \ */
400 len += file_split->filelen;
404 DSOerr(DSO_F_WIN32_JOINER, DSO_R_EMPTY_FILE_STRUCTURE);
408 result = OPENSSL_malloc(len + 1);
411 DSOerr(DSO_F_WIN32_JOINER,
412 ERR_R_MALLOC_FAILURE);
418 strcpy(&result[offset], "\\\\"); offset += 2;
419 strncpy(&result[offset], file_split->node,
420 file_split->nodelen); offset += file_split->nodelen;
421 if(file_split->predir || file_split->dir || file_split->file)
423 result[offset] = '\\'; offset++;
426 else if(file_split->device)
428 strncpy(&result[offset], file_split->device,
429 file_split->devicelen); offset += file_split->devicelen;
430 result[offset] = ':'; offset++;
432 start = file_split->predir;
433 while(file_split->predirlen > (start - file_split->predir))
435 const char *end = openssl_strnchr(start, '/',
436 file_split->predirlen - (start - file_split->predir));
439 + file_split->predirlen
440 - (start - file_split->predir);
441 strncpy(&result[offset], start,
442 end - start); offset += end - start;
443 result[offset] = '\\'; offset++;
446 if(file_split->predir && (file_split->dir || file_split->file))
448 result[offset] = '\\'; offset++;
450 start = file_split->dir;
451 while(file_split->dirlen > (start - file_split->dir))
453 const char *end = openssl_strnchr(start, '/',
454 file_split->dirlen - (start - file_split->dir));
458 - (start - file_split->dir);
459 strncpy(&result[offset], start,
460 end - start); offset += end - start;
461 result[offset] = '\\'; offset++;
464 if(file_split->dir && file_split->file)
466 result[offset] = '\\'; offset++;
468 strncpy(&result[offset], file_split->file,
469 file_split->filelen); offset += file_split->filelen;
470 result[offset] = '\0';
474 static char *win32_merger(DSO *dso, const char *filespec1, const char *filespec2)
477 struct file_st *filespec1_split = NULL;
478 struct file_st *filespec2_split = NULL;
480 if(!filespec1 && !filespec2)
482 DSOerr(DSO_F_WIN32_MERGER,
483 ERR_R_PASSED_NULL_PARAMETER);
488 merged = OPENSSL_malloc(strlen(filespec1) + 1);
491 DSOerr(DSO_F_WIN32_MERGER,
492 ERR_R_MALLOC_FAILURE);
495 strcpy(merged, filespec1);
499 merged = OPENSSL_malloc(strlen(filespec2) + 1);
502 DSOerr(DSO_F_WIN32_MERGER,
503 ERR_R_MALLOC_FAILURE);
506 strcpy(merged, filespec2);
510 filespec1_split = win32_splitter(dso, filespec1, 1);
511 if (!filespec1_split)
513 DSOerr(DSO_F_WIN32_MERGER,
514 ERR_R_MALLOC_FAILURE);
517 filespec2_split = win32_splitter(dso, filespec2, 0);
518 if (!filespec1_split)
520 DSOerr(DSO_F_WIN32_MERGER,
521 ERR_R_MALLOC_FAILURE);
522 OPENSSL_free(filespec1_split);
526 /* Fill in into filespec1_split */
527 if (!filespec1_split->node && !filespec1_split->device)
529 filespec1_split->node = filespec2_split->node;
530 filespec1_split->nodelen = filespec2_split->nodelen;
531 filespec1_split->device = filespec2_split->device;
532 filespec1_split->devicelen = filespec2_split->devicelen;
534 if (!filespec1_split->dir)
536 filespec1_split->dir = filespec2_split->dir;
537 filespec1_split->dirlen = filespec2_split->dirlen;
539 else if (filespec1_split->dir[0] != '\\'
540 && filespec1_split->dir[0] != '/')
542 filespec1_split->predir = filespec2_split->dir;
543 filespec1_split->predirlen = filespec2_split->dirlen;
545 if (!filespec1_split->file)
547 filespec1_split->file = filespec2_split->file;
548 filespec1_split->filelen = filespec2_split->filelen;
551 merged = win32_joiner(dso, filespec1_split);
556 static char *win32_name_converter(DSO *dso, const char *filename)
561 len = strlen(filename);
562 transform = ((strstr(filename, "/") == NULL) &&
563 (strstr(filename, "\\") == NULL) &&
564 (strstr(filename, ":") == NULL));
566 /* We will convert this to "%s.dll" */
567 translated = OPENSSL_malloc(len + 5);
569 /* We will simply duplicate filename */
570 translated = OPENSSL_malloc(len + 1);
571 if(translated == NULL)
573 DSOerr(DSO_F_WIN32_NAME_CONVERTER,
574 DSO_R_NAME_TRANSLATION_FAILED);
578 sprintf(translated, "%s.dll", filename);
580 sprintf(translated, "%s", filename);
584 static const char *openssl_strnchr(const char *string, int c, size_t len)
588 for (i = 0, p = string; i < len && *p; i++, p++)
597 #endif /* OPENSSL_SYS_WIN32 */