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);
108 static const char *openssl_strnchr(const char *string, int c, size_t len);
110 static DSO_METHOD dso_meth_win32 = {
111 "OpenSSL 'win32' shared library method",
116 /* For now, "unbind" doesn't exist */
118 NULL, /* unbind_var */
119 NULL, /* unbind_func */
122 win32_name_converter,
128 DSO_METHOD *DSO_METHOD_win32(void)
130 return(&dso_meth_win32);
133 /* For this DSO_METHOD, our meth_data STACK will contain;
134 * (i) a pointer to the handle (HINSTANCE) returned from
135 * LoadLibrary(), and copied.
138 static int win32_load(DSO *dso)
140 HINSTANCE h = NULL, *p = NULL;
141 /* See applicable comments from dso_dl.c */
142 char *filename = DSO_convert_filename(dso, NULL);
146 DSOerr(DSO_F_WIN32_LOAD,DSO_R_NO_FILENAME);
149 h = LoadLibraryA(filename);
152 DSOerr(DSO_F_WIN32_LOAD,DSO_R_LOAD_FAILED);
153 ERR_add_error_data(3, "filename(", filename, ")");
156 p = (HINSTANCE *)OPENSSL_malloc(sizeof(HINSTANCE));
159 DSOerr(DSO_F_WIN32_LOAD,ERR_R_MALLOC_FAILURE);
163 if(!sk_push(dso->meth_data, (char *)p))
165 DSOerr(DSO_F_WIN32_LOAD,DSO_R_STACK_ERROR);
169 dso->loaded_filename = filename;
174 OPENSSL_free(filename);
182 static int win32_unload(DSO *dso)
187 DSOerr(DSO_F_WIN32_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
190 if(sk_num(dso->meth_data) < 1)
192 p = (HINSTANCE *)sk_pop(dso->meth_data);
195 DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_NULL_HANDLE);
200 DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_UNLOAD_FAILED);
201 /* We should push the value back onto the stack in
202 * case of a retry. */
203 sk_push(dso->meth_data, (char *)p);
211 /* Using GetProcAddress for variables? TODO: Check this out in
212 * the Win32 API docs, there's probably a variant for variables. */
213 static void *win32_bind_var(DSO *dso, const char *symname)
218 if((dso == NULL) || (symname == NULL))
220 DSOerr(DSO_F_WIN32_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER);
223 if(sk_num(dso->meth_data) < 1)
225 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_STACK_ERROR);
228 ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
231 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_NULL_HANDLE);
234 sym = GetProcAddress(*ptr, symname);
237 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_SYM_FAILURE);
238 ERR_add_error_data(3, "symname(", symname, ")");
244 static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname)
249 if((dso == NULL) || (symname == NULL))
251 DSOerr(DSO_F_WIN32_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER);
254 if(sk_num(dso->meth_data) < 1)
256 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_STACK_ERROR);
259 ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
262 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_NULL_HANDLE);
265 sym = GetProcAddress(*ptr, symname);
268 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_SYM_FAILURE);
269 ERR_add_error_data(3, "symname(", symname, ")");
272 return((DSO_FUNC_TYPE)sym);
277 const char *node; int nodelen;
278 const char *device; int devicelen;
279 const char *predir; int predirlen;
280 const char *dir; int dirlen;
281 const char *file; int filelen;
284 static struct file_st *win32_splitter(DSO *dso, const char *filename,
285 int assume_last_is_dir)
287 struct file_st *result = NULL;
288 enum { IN_NODE, IN_DEVICE, IN_FILE } position;
289 const char *start = filename;
293 DSOerr(DSO_F_WIN32_SPLITTER,DSO_R_NO_FILENAME);
298 result = OPENSSL_malloc(sizeof(struct file_st));
301 DSOerr(DSO_F_WIN32_SPLITTER,
302 ERR_R_MALLOC_FAILURE);
306 memset(result, 0, sizeof(struct file_st));
307 position = IN_DEVICE;
309 if(filename[0] == '\\' && filename[1] == '\\'
310 || filename[0] == '/' && filename[1] == '/')
315 result->node = start;
323 if(position != IN_DEVICE)
325 DSOerr(DSO_F_WIN32_SPLITTER,
326 DSO_R_INCORRECT_FILE_SYNTAX);
330 result->device = start;
331 result->devicelen = filename - start;
338 if(position == IN_NODE)
340 result->nodelen = filename - start;
348 result->dirlen += filename - start;
352 if(position == IN_NODE)
354 result->nodelen = filename - start;
358 if(filename - start > 0)
360 if (assume_last_is_dir)
362 result->devicelen += filename - start;
366 result->file = start;
367 result->filelen = filename - start;
379 if(!result->nodelen) result->node = NULL;
380 if(!result->devicelen) result->device = NULL;
381 if(!result->dirlen) result->dir = NULL;
382 if(!result->filelen) result->file = NULL;
387 static char *win32_joiner(DSO *dso, const struct file_st *file_split)
389 int len = 0, offset = 0;
395 DSOerr(DSO_F_WIN32_JOINER,
396 ERR_R_PASSED_NULL_PARAMETER);
401 len += 2 + file_split->nodelen; /* 2 for starting \\ */
402 if(file_split->predir || file_split->dir || file_split->file)
403 len++; /* 1 for ending \ */
405 else if(file_split->device)
407 len += file_split->devicelen + 1; /* 1 for ending : */
409 len += file_split->predirlen;
410 if(file_split->predir && (file_split->dir || file_split->file))
412 len++; /* 1 for ending \ */
414 len += file_split->dirlen;
415 if(file_split->dir && file_split->file)
417 len++; /* 1 for ending \ */
419 len += file_split->filelen;
423 DSOerr(DSO_F_WIN32_JOINER, DSO_R_EMPTY_FILE_STRUCTURE);
427 result = OPENSSL_malloc(len + 1);
430 DSOerr(DSO_F_WIN32_JOINER,
431 ERR_R_MALLOC_FAILURE);
437 strcpy(&result[offset], "\\\\"); offset += 2;
438 strncpy(&result[offset], file_split->node,
439 file_split->nodelen); offset += file_split->nodelen;
440 if(file_split->predir || file_split->dir || file_split->file)
442 result[offset] = '\\'; offset++;
445 else if(file_split->device)
447 strncpy(&result[offset], file_split->device,
448 file_split->devicelen); offset += file_split->devicelen;
449 result[offset] = ':'; offset++;
451 start = file_split->predir;
452 while(file_split->predirlen > (start - file_split->predir))
454 const char *end = openssl_strnchr(start, '/',
455 file_split->predirlen - (start - file_split->predir));
458 + file_split->predirlen
459 - (start - file_split->predir);
460 strncpy(&result[offset], start,
461 end - start); offset += end - start;
462 result[offset] = '\\'; offset++;
465 if(file_split->predir && (file_split->dir || file_split->file))
467 result[offset] = '\\'; offset++;
469 start = file_split->dir;
470 while(file_split->dirlen > (start - file_split->dir))
472 const char *end = openssl_strnchr(start, '/',
473 file_split->dirlen - (start - file_split->dir));
477 - (start - file_split->dir);
478 strncpy(&result[offset], start,
479 end - start); offset += end - start;
480 result[offset] = '\\'; offset++;
483 if(file_split->dir && file_split->file)
485 result[offset] = '\\'; offset++;
487 strncpy(&result[offset], file_split->file,
488 file_split->filelen); offset += file_split->filelen;
489 result[offset] = '\0';
493 static char *win32_merger(DSO *dso, const char *filespec1, const char *filespec2)
496 struct file_st *filespec1_split = NULL;
497 struct file_st *filespec2_split = NULL;
499 if(!filespec1 && !filespec2)
501 DSOerr(DSO_F_WIN32_MERGER,
502 ERR_R_PASSED_NULL_PARAMETER);
507 merged = OPENSSL_malloc(strlen(filespec1) + 1);
510 DSOerr(DSO_F_WIN32_MERGER,
511 ERR_R_MALLOC_FAILURE);
514 strcpy(merged, filespec1);
518 merged = OPENSSL_malloc(strlen(filespec2) + 1);
521 DSOerr(DSO_F_WIN32_MERGER,
522 ERR_R_MALLOC_FAILURE);
525 strcpy(merged, filespec2);
529 filespec1_split = win32_splitter(dso, filespec1, 1);
530 if (!filespec1_split)
532 DSOerr(DSO_F_WIN32_MERGER,
533 ERR_R_MALLOC_FAILURE);
536 filespec2_split = win32_splitter(dso, filespec2, 0);
537 if (!filespec1_split)
539 DSOerr(DSO_F_WIN32_MERGER,
540 ERR_R_MALLOC_FAILURE);
541 OPENSSL_free(filespec1_split);
545 /* Fill in into filespec1_split */
546 if (!filespec1_split->node && !filespec1_split->device)
548 filespec1_split->node = filespec2_split->node;
549 filespec1_split->nodelen = filespec2_split->nodelen;
550 filespec1_split->device = filespec2_split->device;
551 filespec1_split->devicelen = filespec2_split->devicelen;
553 if (!filespec1_split->dir)
555 filespec1_split->dir = filespec2_split->dir;
556 filespec1_split->dirlen = filespec2_split->dirlen;
558 else if (filespec1_split->dir[0] != '\\'
559 && filespec1_split->dir[0] != '/')
561 filespec1_split->predir = filespec2_split->dir;
562 filespec1_split->predirlen = filespec2_split->dirlen;
564 if (!filespec1_split->file)
566 filespec1_split->file = filespec2_split->file;
567 filespec1_split->filelen = filespec2_split->filelen;
570 merged = win32_joiner(dso, filespec1_split);
575 static char *win32_name_converter(DSO *dso, const char *filename)
580 len = strlen(filename);
581 transform = ((strstr(filename, "/") == NULL) &&
582 (strstr(filename, "\\") == NULL) &&
583 (strstr(filename, ":") == NULL));
585 /* We will convert this to "%s.dll" */
586 translated = OPENSSL_malloc(len + 5);
588 /* We will simply duplicate filename */
589 translated = OPENSSL_malloc(len + 1);
590 if(translated == NULL)
592 DSOerr(DSO_F_WIN32_NAME_CONVERTER,
593 DSO_R_NAME_TRANSLATION_FAILED);
597 sprintf(translated, "%s.dll", filename);
599 sprintf(translated, "%s", filename);
603 static const char *openssl_strnchr(const char *string, int c, size_t len)
607 for (i = 0, p = string; i < len && *p; i++, p++)
616 #endif /* OPENSSL_SYS_WIN32 */