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 */