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 */