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
89 static HINSTANCE LoadLibraryA(LPCSTR lpLibFileName)
92 size_t len_0=strlen(lpLibFileName)+1,i;
95 fnamw = (WCHAR *)_alloca (len_0*sizeof(WCHAR));
97 fnamw = (WCHAR *)alloca (len_0*sizeof(WCHAR));
101 SetLastError(ERROR_NOT_ENOUGH_MEMORY);
105 #if defined(_WIN32_WCE) && _WIN32_WCE>=101
106 if (!MultiByteToWideChar(CP_ACP,0,lpLibFileName,len_0,fnamw,len_0))
108 for (i=0;i<len_0;i++) fnamw[i]=(WCHAR)lpLibFileName[i];
110 return LoadLibraryW(fnamw);
114 /* Part of the hack in "win32_load" ... */
115 #define DSO_MAX_TRANSLATED_SIZE 256
117 static int win32_load(DSO *dso);
118 static int win32_unload(DSO *dso);
119 static void *win32_bind_var(DSO *dso, const char *symname);
120 static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname);
122 static int win32_unbind_var(DSO *dso, char *symname, void *symptr);
123 static int win32_unbind_func(DSO *dso, char *symname, DSO_FUNC_TYPE symptr);
124 static int win32_init(DSO *dso);
125 static int win32_finish(DSO *dso);
126 static long win32_ctrl(DSO *dso, int cmd, long larg, void *parg);
128 static char *win32_name_converter(DSO *dso, const char *filename);
129 static char *win32_merger(DSO *dso, const char *filespec1,
130 const char *filespec2);
131 static int win32_pathbyaddr(void *addr,char *path,int sz);
132 static void *win32_globallookup(const char *name);
134 static const char *openssl_strnchr(const char *string, int c, size_t len);
136 static DSO_METHOD dso_meth_win32 = {
137 "OpenSSL 'win32' shared library method",
142 /* For now, "unbind" doesn't exist */
144 NULL, /* unbind_var */
145 NULL, /* unbind_func */
148 win32_name_converter,
156 DSO_METHOD *DSO_METHOD_win32(void)
158 return(&dso_meth_win32);
161 /* For this DSO_METHOD, our meth_data STACK will contain;
162 * (i) a pointer to the handle (HINSTANCE) returned from
163 * LoadLibrary(), and copied.
166 static int win32_load(DSO *dso)
168 HINSTANCE h = NULL, *p = NULL;
169 /* See applicable comments from dso_dl.c */
170 char *filename = DSO_convert_filename(dso, NULL);
174 DSOerr(DSO_F_WIN32_LOAD,DSO_R_NO_FILENAME);
177 h = LoadLibraryA(filename);
180 DSOerr(DSO_F_WIN32_LOAD,DSO_R_LOAD_FAILED);
181 ERR_add_error_data(3, "filename(", filename, ")");
184 p = (HINSTANCE *)OPENSSL_malloc(sizeof(HINSTANCE));
187 DSOerr(DSO_F_WIN32_LOAD,ERR_R_MALLOC_FAILURE);
191 if(!sk_push(dso->meth_data, (char *)p))
193 DSOerr(DSO_F_WIN32_LOAD,DSO_R_STACK_ERROR);
197 dso->loaded_filename = filename;
202 OPENSSL_free(filename);
210 static int win32_unload(DSO *dso)
215 DSOerr(DSO_F_WIN32_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
218 if(sk_num(dso->meth_data) < 1)
220 p = (HINSTANCE *)sk_pop(dso->meth_data);
223 DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_NULL_HANDLE);
228 DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_UNLOAD_FAILED);
229 /* We should push the value back onto the stack in
230 * case of a retry. */
231 sk_push(dso->meth_data, (char *)p);
239 /* Using GetProcAddress for variables? TODO: Check this out in
240 * the Win32 API docs, there's probably a variant for variables. */
241 static void *win32_bind_var(DSO *dso, const char *symname)
246 if((dso == NULL) || (symname == NULL))
248 DSOerr(DSO_F_WIN32_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER);
251 if(sk_num(dso->meth_data) < 1)
253 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_STACK_ERROR);
256 ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
259 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_NULL_HANDLE);
262 sym = GetProcAddress(*ptr, symname);
265 DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_SYM_FAILURE);
266 ERR_add_error_data(3, "symname(", symname, ")");
272 static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname)
277 if((dso == NULL) || (symname == NULL))
279 DSOerr(DSO_F_WIN32_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER);
282 if(sk_num(dso->meth_data) < 1)
284 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_STACK_ERROR);
287 ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
290 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_NULL_HANDLE);
293 sym = GetProcAddress(*ptr, symname);
296 DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_SYM_FAILURE);
297 ERR_add_error_data(3, "symname(", symname, ")");
300 return((DSO_FUNC_TYPE)sym);
305 const char *node; int nodelen;
306 const char *device; int devicelen;
307 const char *predir; int predirlen;
308 const char *dir; int dirlen;
309 const char *file; int filelen;
312 static struct file_st *win32_splitter(DSO *dso, const char *filename,
313 int assume_last_is_dir)
315 struct file_st *result = NULL;
316 enum { IN_NODE, IN_DEVICE, IN_FILE } position;
317 const char *start = filename;
322 DSOerr(DSO_F_WIN32_SPLITTER,DSO_R_NO_FILENAME);
327 result = OPENSSL_malloc(sizeof(struct file_st));
330 DSOerr(DSO_F_WIN32_SPLITTER,
331 ERR_R_MALLOC_FAILURE);
335 memset(result, 0, sizeof(struct file_st));
336 position = IN_DEVICE;
338 if((filename[0] == '\\' && filename[1] == '\\')
339 || (filename[0] == '/' && filename[1] == '/'))
344 result->node = start;
353 if(position != IN_DEVICE)
355 DSOerr(DSO_F_WIN32_SPLITTER,
356 DSO_R_INCORRECT_FILE_SYNTAX);
360 result->device = start;
361 result->devicelen = filename - start;
368 if(position == IN_NODE)
370 result->nodelen = filename - start;
375 else if(position == IN_DEVICE)
380 result->dirlen = filename - start;
386 result->dirlen += filename - start;
391 if(position == IN_NODE)
393 result->nodelen = filename - start;
397 if(filename - start > 0)
399 if (assume_last_is_dir)
401 if (position == IN_DEVICE)
411 result->file = start;
425 if(!result->nodelen) result->node = NULL;
426 if(!result->devicelen) result->device = NULL;
427 if(!result->dirlen) result->dir = NULL;
428 if(!result->filelen) result->file = NULL;
433 static char *win32_joiner(DSO *dso, const struct file_st *file_split)
435 int len = 0, offset = 0;
441 DSOerr(DSO_F_WIN32_JOINER,
442 ERR_R_PASSED_NULL_PARAMETER);
447 len += 2 + file_split->nodelen; /* 2 for starting \\ */
448 if(file_split->predir || file_split->dir || file_split->file)
449 len++; /* 1 for ending \ */
451 else if(file_split->device)
453 len += file_split->devicelen + 1; /* 1 for ending : */
455 len += file_split->predirlen;
456 if(file_split->predir && (file_split->dir || file_split->file))
458 len++; /* 1 for ending \ */
460 len += file_split->dirlen;
461 if(file_split->dir && file_split->file)
463 len++; /* 1 for ending \ */
465 len += file_split->filelen;
469 DSOerr(DSO_F_WIN32_JOINER, DSO_R_EMPTY_FILE_STRUCTURE);
473 result = OPENSSL_malloc(len + 1);
476 DSOerr(DSO_F_WIN32_JOINER,
477 ERR_R_MALLOC_FAILURE);
483 strcpy(&result[offset], "\\\\"); offset += 2;
484 strncpy(&result[offset], file_split->node,
485 file_split->nodelen); offset += file_split->nodelen;
486 if(file_split->predir || file_split->dir || file_split->file)
488 result[offset] = '\\'; offset++;
491 else if(file_split->device)
493 strncpy(&result[offset], file_split->device,
494 file_split->devicelen); offset += file_split->devicelen;
495 result[offset] = ':'; offset++;
497 start = file_split->predir;
498 while(file_split->predirlen > (start - file_split->predir))
500 const char *end = openssl_strnchr(start, '/',
501 file_split->predirlen - (start - file_split->predir));
504 + file_split->predirlen
505 - (start - file_split->predir);
506 strncpy(&result[offset], start,
507 end - start); offset += end - start;
508 result[offset] = '\\'; offset++;
511 #if 0 /* Not needed, since the directory converter above already appeneded
513 if(file_split->predir && (file_split->dir || file_split->file))
515 result[offset] = '\\'; offset++;
518 start = file_split->dir;
519 while(file_split->dirlen > (start - file_split->dir))
521 const char *end = openssl_strnchr(start, '/',
522 file_split->dirlen - (start - file_split->dir));
526 - (start - file_split->dir);
527 strncpy(&result[offset], start,
528 end - start); offset += end - start;
529 result[offset] = '\\'; offset++;
532 #if 0 /* Not needed, since the directory converter above already appeneded
534 if(file_split->dir && file_split->file)
536 result[offset] = '\\'; offset++;
539 strncpy(&result[offset], file_split->file,
540 file_split->filelen); offset += file_split->filelen;
541 result[offset] = '\0';
545 static char *win32_merger(DSO *dso, const char *filespec1, const char *filespec2)
548 struct file_st *filespec1_split = NULL;
549 struct file_st *filespec2_split = NULL;
551 if(!filespec1 && !filespec2)
553 DSOerr(DSO_F_WIN32_MERGER,
554 ERR_R_PASSED_NULL_PARAMETER);
559 merged = OPENSSL_malloc(strlen(filespec1) + 1);
562 DSOerr(DSO_F_WIN32_MERGER,
563 ERR_R_MALLOC_FAILURE);
566 strcpy(merged, filespec1);
570 merged = OPENSSL_malloc(strlen(filespec2) + 1);
573 DSOerr(DSO_F_WIN32_MERGER,
574 ERR_R_MALLOC_FAILURE);
577 strcpy(merged, filespec2);
581 filespec1_split = win32_splitter(dso, filespec1, 0);
582 if (!filespec1_split)
584 DSOerr(DSO_F_WIN32_MERGER,
585 ERR_R_MALLOC_FAILURE);
588 filespec2_split = win32_splitter(dso, filespec2, 1);
589 if (!filespec2_split)
591 DSOerr(DSO_F_WIN32_MERGER,
592 ERR_R_MALLOC_FAILURE);
593 OPENSSL_free(filespec1_split);
597 /* Fill in into filespec1_split */
598 if (!filespec1_split->node && !filespec1_split->device)
600 filespec1_split->node = filespec2_split->node;
601 filespec1_split->nodelen = filespec2_split->nodelen;
602 filespec1_split->device = filespec2_split->device;
603 filespec1_split->devicelen = filespec2_split->devicelen;
605 if (!filespec1_split->dir)
607 filespec1_split->dir = filespec2_split->dir;
608 filespec1_split->dirlen = filespec2_split->dirlen;
610 else if (filespec1_split->dir[0] != '\\'
611 && filespec1_split->dir[0] != '/')
613 filespec1_split->predir = filespec2_split->dir;
614 filespec1_split->predirlen = filespec2_split->dirlen;
616 if (!filespec1_split->file)
618 filespec1_split->file = filespec2_split->file;
619 filespec1_split->filelen = filespec2_split->filelen;
622 merged = win32_joiner(dso, filespec1_split);
627 static char *win32_name_converter(DSO *dso, const char *filename)
632 len = strlen(filename);
633 transform = ((strstr(filename, "/") == NULL) &&
634 (strstr(filename, "\\") == NULL) &&
635 (strstr(filename, ":") == NULL));
637 /* We will convert this to "%s.dll" */
638 translated = OPENSSL_malloc(len + 5);
640 /* We will simply duplicate filename */
641 translated = OPENSSL_malloc(len + 1);
642 if(translated == NULL)
644 DSOerr(DSO_F_WIN32_NAME_CONVERTER,
645 DSO_R_NAME_TRANSLATION_FAILED);
649 sprintf(translated, "%s.dll", filename);
651 sprintf(translated, "%s", filename);
655 static const char *openssl_strnchr(const char *string, int c, size_t len)
659 for (i = 0, p = string; i < len && *p; i++, p++)
667 #include <tlhelp32.h>
669 # define DLLNAME "TOOLHELP.DLL"
671 # ifdef MODULEENTRY32
672 # undef MODULEENTRY32 /* unmask the ASCII version! */
674 # define DLLNAME "KERNEL32.DLL"
677 typedef HANDLE (WINAPI *CREATETOOLHELP32SNAPSHOT)(DWORD, DWORD);
678 typedef BOOL (WINAPI *CLOSETOOLHELP32SNAPSHOT)(HANDLE);
679 typedef BOOL (WINAPI *MODULE32)(HANDLE, MODULEENTRY32 *);
681 static int win32_pathbyaddr(void *addr,char *path,int sz)
684 HANDLE hModuleSnap = INVALID_HANDLE_VALUE;
686 CREATETOOLHELP32SNAPSHOT create_snap;
687 CLOSETOOLHELP32SNAPSHOT close_snap;
688 MODULE32 module_first, module_next;
693 union { int(*f)(void*,char*,int); void *p; } t =
694 { win32_pathbyaddr };
698 dll = LoadLibrary(TEXT(DLLNAME));
701 DSOerr(DSO_F_WIN32_PATHBYADDR,DSO_R_UNSUPPORTED);
705 create_snap = (CREATETOOLHELP32SNAPSHOT)
706 GetProcAddress(dll,"CreateToolhelp32Snapshot");
707 if (create_snap == NULL)
710 DSOerr(DSO_F_WIN32_PATHBYADDR,DSO_R_UNSUPPORTED);
713 /* We take the rest for granted... */
715 close_snap = (CLOSETOOLHELP32SNAPSHOT)
716 GetProcAddress(dll,"CloseToolhelp32Snapshot");
718 close_snap = (CLOSETOOLHELP32SNAPSHOT)CloseHandle;
720 module_first = (MODULE32)GetProcAddress(dll,"Module32First");
721 module_next = (MODULE32)GetProcAddress(dll,"Module32Next");
723 hModuleSnap = (*create_snap)(TH32CS_SNAPMODULE,0);
724 if( hModuleSnap == INVALID_HANDLE_VALUE )
727 DSOerr(DSO_F_WIN32_PATHBYADDR,DSO_R_UNSUPPORTED);
731 me32.dwSize = sizeof(me32);
733 if(!(*module_first)(hModuleSnap,&me32))
735 (*close_snap)(hModuleSnap);
737 DSOerr(DSO_F_WIN32_PATHBYADDR,DSO_R_FAILURE);
742 if ((BYTE *)addr >= me32.modBaseAddr &&
743 (BYTE *)addr < me32.modBaseAddr+me32.modBaseSize)
745 (*close_snap)(hModuleSnap);
748 # if _WIN32_WCE >= 101
749 return WideCharToMultiByte(CP_ACP,0,me32.szExePath,-1,
752 len = (int)wcslen(me32.szExePath);
753 if (sz <= 0) return len+1;
754 if (len >= sz) len=sz-1;
756 path[i] = (char)me32.szExePath[i];
761 len = (int)strlen(me32.szExePath);
762 if (sz <= 0) return len+1;
763 if (len >= sz) len=sz-1;
764 memcpy(path,me32.szExePath,len);
769 } while((*module_next)(hModuleSnap, &me32));
771 (*close_snap)(hModuleSnap);
776 static void *win32_globallookup(const char *name)
779 HANDLE hModuleSnap = INVALID_HANDLE_VALUE;
781 CREATETOOLHELP32SNAPSHOT create_snap;
782 CLOSETOOLHELP32SNAPSHOT close_snap;
783 MODULE32 module_first, module_next;
786 dll = LoadLibrary(TEXT(DLLNAME));
789 DSOerr(DSO_F_WIN32_GLOBALLOOKUP,DSO_R_UNSUPPORTED);
793 create_snap = (CREATETOOLHELP32SNAPSHOT)
794 GetProcAddress(dll,"CreateToolhelp32Snapshot");
795 if (create_snap == NULL)
798 DSOerr(DSO_F_WIN32_GLOBALLOOKUP,DSO_R_UNSUPPORTED);
801 /* We take the rest for granted... */
803 close_snap = (CLOSETOOLHELP32SNAPSHOT)
804 GetProcAddress(dll,"CloseToolhelp32Snapshot");
806 close_snap = (CLOSETOOLHELP32SNAPSHOT)CloseHandle;
808 module_first = (MODULE32)GetProcAddress(dll,"Module32First");
809 module_next = (MODULE32)GetProcAddress(dll,"Module32Next");
811 hModuleSnap = (*create_snap)(TH32CS_SNAPMODULE,0);
812 if( hModuleSnap == INVALID_HANDLE_VALUE )
815 DSOerr(DSO_F_WIN32_GLOBALLOOKUP,DSO_R_UNSUPPORTED);
819 me32.dwSize = sizeof(me32);
821 if (!(*module_first)(hModuleSnap,&me32))
823 (*close_snap)(hModuleSnap);
829 if ((ret = GetProcAddress(me32.hModule,name)))
831 (*close_snap)(hModuleSnap);
835 } while((*module_next)(hModuleSnap,&me32));
837 (*close_snap)(hModuleSnap);
841 #endif /* DSO_WIN32 */