86af760d381384a4dbf17d34a789fdb34438057e
[dragonfly.git] / crypto / openssl-0.9 / crypto / cryptlib.c
1 /* crypto/cryptlib.c */
2 /* ====================================================================
3  * Copyright (c) 1998-2003 The OpenSSL Project.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer. 
11  *
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in
14  *    the documentation and/or other materials provided with the
15  *    distribution.
16  *
17  * 3. All advertising materials mentioning features or use of this
18  *    software must display the following acknowledgment:
19  *    "This product includes software developed by the OpenSSL Project
20  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
21  *
22  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23  *    endorse or promote products derived from this software without
24  *    prior written permission. For written permission, please contact
25  *    openssl-core@openssl.org.
26  *
27  * 5. Products derived from this software may not be called "OpenSSL"
28  *    nor may "OpenSSL" appear in their names without prior written
29  *    permission of the OpenSSL Project.
30  *
31  * 6. Redistributions of any form whatsoever must retain the following
32  *    acknowledgment:
33  *    "This product includes software developed by the OpenSSL Project
34  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
35  *
36  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
40  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47  * OF THE POSSIBILITY OF SUCH DAMAGE.
48  * ====================================================================
49  *
50  * This product includes cryptographic software written by Eric Young
51  * (eay@cryptsoft.com).  This product includes software written by Tim
52  * Hudson (tjh@cryptsoft.com).
53  *
54  */
55 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
56  * All rights reserved.
57  *
58  * This package is an SSL implementation written
59  * by Eric Young (eay@cryptsoft.com).
60  * The implementation was written so as to conform with Netscapes SSL.
61  * 
62  * This library is free for commercial and non-commercial use as long as
63  * the following conditions are aheared to.  The following conditions
64  * apply to all code found in this distribution, be it the RC4, RSA,
65  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
66  * included with this distribution is covered by the same copyright terms
67  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
68  * 
69  * Copyright remains Eric Young's, and as such any Copyright notices in
70  * the code are not to be removed.
71  * If this package is used in a product, Eric Young should be given attribution
72  * as the author of the parts of the library used.
73  * This can be in the form of a textual message at program startup or
74  * in documentation (online or textual) provided with the package.
75  * 
76  * Redistribution and use in source and binary forms, with or without
77  * modification, are permitted provided that the following conditions
78  * are met:
79  * 1. Redistributions of source code must retain the copyright
80  *    notice, this list of conditions and the following disclaimer.
81  * 2. Redistributions in binary form must reproduce the above copyright
82  *    notice, this list of conditions and the following disclaimer in the
83  *    documentation and/or other materials provided with the distribution.
84  * 3. All advertising materials mentioning features or use of this software
85  *    must display the following acknowledgement:
86  *    "This product includes cryptographic software written by
87  *     Eric Young (eay@cryptsoft.com)"
88  *    The word 'cryptographic' can be left out if the rouines from the library
89  *    being used are not cryptographic related :-).
90  * 4. If you include any Windows specific code (or a derivative thereof) from 
91  *    the apps directory (application code) you must include an acknowledgement:
92  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
93  * 
94  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
95  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
96  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
97  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
98  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
99  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
100  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
101  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
102  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
103  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
104  * SUCH DAMAGE.
105  * 
106  * The licence and distribution terms for any publically available version or
107  * derivative of this code cannot be changed.  i.e. this code cannot simply be
108  * copied and put under another distribution licence
109  * [including the GNU Public Licence.]
110  */
111 /* ====================================================================
112  * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
113  * ECDH support in OpenSSL originally developed by 
114  * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
115  */
116
117 #include "cryptlib.h"
118 #include <openssl/safestack.h>
119
120 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
121 static double SSLeay_MSVC5_hack=0.0; /* and for VC1.5 */
122 #endif
123
124 DECLARE_STACK_OF(CRYPTO_dynlock)
125 IMPLEMENT_STACK_OF(CRYPTO_dynlock)
126
127 /* real #defines in crypto.h, keep these upto date */
128 static const char* const lock_names[CRYPTO_NUM_LOCKS] =
129         {
130         "<<ERROR>>",
131         "err",
132         "ex_data",
133         "x509",
134         "x509_info",
135         "x509_pkey",
136         "x509_crl",
137         "x509_req",
138         "dsa",
139         "rsa",
140         "evp_pkey",
141         "x509_store",
142         "ssl_ctx",
143         "ssl_cert",
144         "ssl_session",
145         "ssl_sess_cert",
146         "ssl",
147         "ssl_method",
148         "rand",
149         "rand2",
150         "debug_malloc",
151         "BIO",
152         "gethostbyname",
153         "getservbyname",
154         "readdir",
155         "RSA_blinding",
156         "dh",
157         "debug_malloc2",
158         "dso",
159         "dynlock",
160         "engine",
161         "ui",
162         "ecdsa",
163         "ec",
164         "ecdh",
165         "bn",
166         "ec_pre_comp",
167         "store",
168         "comp",
169 #if CRYPTO_NUM_LOCKS != 39
170 # error "Inconsistency between crypto.h and cryptlib.c"
171 #endif
172         };
173
174 /* This is for applications to allocate new type names in the non-dynamic
175    array of lock names.  These are numbered with positive numbers.  */
176 static STACK *app_locks=NULL;
177
178 /* For applications that want a more dynamic way of handling threads, the
179    following stack is used.  These are externally numbered with negative
180    numbers.  */
181 static STACK_OF(CRYPTO_dynlock) *dyn_locks=NULL;
182
183
184 static void (MS_FAR *locking_callback)(int mode,int type,
185         const char *file,int line)=NULL;
186 static int (MS_FAR *add_lock_callback)(int *pointer,int amount,
187         int type,const char *file,int line)=NULL;
188 static unsigned long (MS_FAR *id_callback)(void)=NULL;
189 static struct CRYPTO_dynlock_value *(MS_FAR *dynlock_create_callback)
190         (const char *file,int line)=NULL;
191 static void (MS_FAR *dynlock_lock_callback)(int mode,
192         struct CRYPTO_dynlock_value *l, const char *file,int line)=NULL;
193 static void (MS_FAR *dynlock_destroy_callback)(struct CRYPTO_dynlock_value *l,
194         const char *file,int line)=NULL;
195
196 int CRYPTO_get_new_lockid(char *name)
197         {
198         char *str;
199         int i;
200
201 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
202         /* A hack to make Visual C++ 5.0 work correctly when linking as
203          * a DLL using /MT. Without this, the application cannot use
204          * and floating point printf's.
205          * It also seems to be needed for Visual C 1.5 (win16) */
206         SSLeay_MSVC5_hack=(double)name[0]*(double)name[1];
207 #endif
208
209         if ((app_locks == NULL) && ((app_locks=sk_new_null()) == NULL))
210                 {
211                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
212                 return(0);
213                 }
214         if ((str=BUF_strdup(name)) == NULL)
215                 {
216                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
217                 return(0);
218                 }
219         i=sk_push(app_locks,str);
220         if (!i)
221                 OPENSSL_free(str);
222         else
223                 i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
224         return(i);
225         }
226
227 int CRYPTO_num_locks(void)
228         {
229         return CRYPTO_NUM_LOCKS;
230         }
231
232 int CRYPTO_get_new_dynlockid(void)
233         {
234         int i = 0;
235         CRYPTO_dynlock *pointer = NULL;
236
237         if (dynlock_create_callback == NULL)
238                 {
239                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK);
240                 return(0);
241                 }
242         CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
243         if ((dyn_locks == NULL)
244                 && ((dyn_locks=sk_CRYPTO_dynlock_new_null()) == NULL))
245                 {
246                 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
247                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
248                 return(0);
249                 }
250         CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
251
252         pointer = (CRYPTO_dynlock *)OPENSSL_malloc(sizeof(CRYPTO_dynlock));
253         if (pointer == NULL)
254                 {
255                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
256                 return(0);
257                 }
258         pointer->references = 1;
259         pointer->data = dynlock_create_callback(__FILE__,__LINE__);
260         if (pointer->data == NULL)
261                 {
262                 OPENSSL_free(pointer);
263                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
264                 return(0);
265                 }
266
267         CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
268         /* First, try to find an existing empty slot */
269         i=sk_CRYPTO_dynlock_find(dyn_locks,NULL);
270         /* If there was none, push, thereby creating a new one */
271         if (i == -1)
272                 /* Since sk_push() returns the number of items on the
273                    stack, not the location of the pushed item, we need
274                    to transform the returned number into a position,
275                    by decreasing it.  */
276                 i=sk_CRYPTO_dynlock_push(dyn_locks,pointer) - 1;
277         else
278                 /* If we found a place with a NULL pointer, put our pointer
279                    in it.  */
280                 sk_CRYPTO_dynlock_set(dyn_locks,i,pointer);
281         CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
282
283         if (i == -1)
284                 {
285                 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
286                 OPENSSL_free(pointer);
287                 }
288         else
289                 i += 1; /* to avoid 0 */
290         return -i;
291         }
292
293 void CRYPTO_destroy_dynlockid(int i)
294         {
295         CRYPTO_dynlock *pointer = NULL;
296         if (i)
297                 i = -i-1;
298         if (dynlock_destroy_callback == NULL)
299                 return;
300
301         CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
302
303         if (dyn_locks == NULL || i >= sk_CRYPTO_dynlock_num(dyn_locks))
304                 {
305                 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
306                 return;
307                 }
308         pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
309         if (pointer != NULL)
310                 {
311                 --pointer->references;
312 #ifdef REF_CHECK
313                 if (pointer->references < 0)
314                         {
315                         fprintf(stderr,"CRYPTO_destroy_dynlockid, bad reference count\n");
316                         abort();
317                         }
318                 else
319 #endif
320                         if (pointer->references <= 0)
321                                 {
322                                 sk_CRYPTO_dynlock_set(dyn_locks, i, NULL);
323                                 }
324                         else
325                                 pointer = NULL;
326                 }
327         CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
328
329         if (pointer)
330                 {
331                 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
332                 OPENSSL_free(pointer);
333                 }
334         }
335
336 struct CRYPTO_dynlock_value *CRYPTO_get_dynlock_value(int i)
337         {
338         CRYPTO_dynlock *pointer = NULL;
339         if (i)
340                 i = -i-1;
341
342         CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
343
344         if (dyn_locks != NULL && i < sk_CRYPTO_dynlock_num(dyn_locks))
345                 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
346         if (pointer)
347                 pointer->references++;
348
349         CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
350
351         if (pointer)
352                 return pointer->data;
353         return NULL;
354         }
355
356 struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void))
357         (const char *file,int line)
358         {
359         return(dynlock_create_callback);
360         }
361
362 void (*CRYPTO_get_dynlock_lock_callback(void))(int mode,
363         struct CRYPTO_dynlock_value *l, const char *file,int line)
364         {
365         return(dynlock_lock_callback);
366         }
367
368 void (*CRYPTO_get_dynlock_destroy_callback(void))
369         (struct CRYPTO_dynlock_value *l, const char *file,int line)
370         {
371         return(dynlock_destroy_callback);
372         }
373
374 void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(*func)
375         (const char *file, int line))
376         {
377         dynlock_create_callback=func;
378         }
379
380 void CRYPTO_set_dynlock_lock_callback(void (*func)(int mode,
381         struct CRYPTO_dynlock_value *l, const char *file, int line))
382         {
383         dynlock_lock_callback=func;
384         }
385
386 void CRYPTO_set_dynlock_destroy_callback(void (*func)
387         (struct CRYPTO_dynlock_value *l, const char *file, int line))
388         {
389         dynlock_destroy_callback=func;
390         }
391
392
393 void (*CRYPTO_get_locking_callback(void))(int mode,int type,const char *file,
394                 int line)
395         {
396         return(locking_callback);
397         }
398
399 int (*CRYPTO_get_add_lock_callback(void))(int *num,int mount,int type,
400                                           const char *file,int line)
401         {
402         return(add_lock_callback);
403         }
404
405 void CRYPTO_set_locking_callback(void (*func)(int mode,int type,
406                                               const char *file,int line))
407         {
408         locking_callback=func;
409         }
410
411 void CRYPTO_set_add_lock_callback(int (*func)(int *num,int mount,int type,
412                                               const char *file,int line))
413         {
414         add_lock_callback=func;
415         }
416
417 unsigned long (*CRYPTO_get_id_callback(void))(void)
418         {
419         return(id_callback);
420         }
421
422 void CRYPTO_set_id_callback(unsigned long (*func)(void))
423         {
424         id_callback=func;
425         }
426
427 unsigned long CRYPTO_thread_id(void)
428         {
429         unsigned long ret=0;
430
431         if (id_callback == NULL)
432                 {
433 #ifdef OPENSSL_SYS_WIN16
434                 ret=(unsigned long)GetCurrentTask();
435 #elif defined(OPENSSL_SYS_WIN32)
436                 ret=(unsigned long)GetCurrentThreadId();
437 #elif defined(GETPID_IS_MEANINGLESS)
438                 ret=1L;
439 #else
440                 ret=(unsigned long)getpid();
441 #endif
442                 }
443         else
444                 ret=id_callback();
445         return(ret);
446         }
447
448 void CRYPTO_lock(int mode, int type, const char *file, int line)
449         {
450 #ifdef LOCK_DEBUG
451                 {
452                 char *rw_text,*operation_text;
453
454                 if (mode & CRYPTO_LOCK)
455                         operation_text="lock  ";
456                 else if (mode & CRYPTO_UNLOCK)
457                         operation_text="unlock";
458                 else
459                         operation_text="ERROR ";
460
461                 if (mode & CRYPTO_READ)
462                         rw_text="r";
463                 else if (mode & CRYPTO_WRITE)
464                         rw_text="w";
465                 else
466                         rw_text="ERROR";
467
468                 fprintf(stderr,"lock:%08lx:(%s)%s %-18s %s:%d\n",
469                         CRYPTO_thread_id(), rw_text, operation_text,
470                         CRYPTO_get_lock_name(type), file, line);
471                 }
472 #endif
473         if (type < 0)
474                 {
475                 if (dynlock_lock_callback != NULL)
476                         {
477                         struct CRYPTO_dynlock_value *pointer
478                                 = CRYPTO_get_dynlock_value(type);
479
480                         OPENSSL_assert(pointer != NULL);
481
482                         dynlock_lock_callback(mode, pointer, file, line);
483
484                         CRYPTO_destroy_dynlockid(type);
485                         }
486                 }
487         else
488                 if (locking_callback != NULL)
489                         locking_callback(mode,type,file,line);
490         }
491
492 int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
493              int line)
494         {
495         int ret = 0;
496
497         if (add_lock_callback != NULL)
498                 {
499 #ifdef LOCK_DEBUG
500                 int before= *pointer;
501 #endif
502
503                 ret=add_lock_callback(pointer,amount,type,file,line);
504 #ifdef LOCK_DEBUG
505                 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
506                         CRYPTO_thread_id(),
507                         before,amount,ret,
508                         CRYPTO_get_lock_name(type),
509                         file,line);
510 #endif
511                 }
512         else
513                 {
514                 CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE,type,file,line);
515
516                 ret= *pointer+amount;
517 #ifdef LOCK_DEBUG
518                 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
519                         CRYPTO_thread_id(),
520                         *pointer,amount,ret,
521                         CRYPTO_get_lock_name(type),
522                         file,line);
523 #endif
524                 *pointer=ret;
525                 CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE,type,file,line);
526                 }
527         return(ret);
528         }
529
530 const char *CRYPTO_get_lock_name(int type)
531         {
532         if (type < 0)
533                 return("dynamic");
534         else if (type < CRYPTO_NUM_LOCKS)
535                 return(lock_names[type]);
536         else if (type-CRYPTO_NUM_LOCKS > sk_num(app_locks))
537                 return("ERROR");
538         else
539                 return(sk_value(app_locks,type-CRYPTO_NUM_LOCKS));
540         }
541
542 #if     defined(__i386)   || defined(__i386__)   || defined(_M_IX86) || \
543         defined(__INTEL__) || \
544         defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64)
545
546 unsigned long  OPENSSL_ia32cap_P=0;
547 unsigned long *OPENSSL_ia32cap_loc(void) { return &OPENSSL_ia32cap_P; }
548
549 #if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM) && !defined(I386_ONLY)
550 #define OPENSSL_CPUID_SETUP
551 void OPENSSL_cpuid_setup(void)
552 { static int trigger=0;
553   unsigned long OPENSSL_ia32_cpuid(void);
554   char *env;
555
556     if (trigger)        return;
557
558     trigger=1;
559     if ((env=getenv("OPENSSL_ia32cap")))
560         OPENSSL_ia32cap_P = strtoul(env,NULL,0)|(1<<10);
561     else
562         OPENSSL_ia32cap_P = OPENSSL_ia32_cpuid()|(1<<10);
563     /*
564      * |(1<<10) sets a reserved bit to signal that variable
565      * was initialized already... This is to avoid interference
566      * with cpuid snippets in ELF .init segment.
567      */
568 }
569 #endif
570
571 #else
572 unsigned long *OPENSSL_ia32cap_loc(void) { return NULL; }
573 #endif
574 int OPENSSL_NONPIC_relocated = 0;
575 #if !defined(OPENSSL_CPUID_SETUP)
576 void OPENSSL_cpuid_setup(void) {}
577 #endif
578
579 #if (defined(_WIN32) || defined(__CYGWIN__)) && defined(_WINDLL)
580 #ifdef __CYGWIN__
581 /* pick DLL_[PROCESS|THREAD]_[ATTACH|DETACH] definitions */
582 #include <windows.h>
583 #endif
584
585 /* All we really need to do is remove the 'error' state when a thread
586  * detaches */
587
588 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason,
589              LPVOID lpvReserved)
590         {
591         switch(fdwReason)
592                 {
593         case DLL_PROCESS_ATTACH:
594                 OPENSSL_cpuid_setup();
595 #if defined(_WIN32_WINNT)
596                 {
597                 IMAGE_DOS_HEADER *dos_header = (IMAGE_DOS_HEADER *)hinstDLL;
598                 IMAGE_NT_HEADERS *nt_headers;
599
600                 if (dos_header->e_magic==IMAGE_DOS_SIGNATURE)
601                         {
602                         nt_headers = (IMAGE_NT_HEADERS *)((char *)dos_header
603                                                 + dos_header->e_lfanew);
604                         if (nt_headers->Signature==IMAGE_NT_SIGNATURE &&
605                             hinstDLL!=(HINSTANCE)(nt_headers->OptionalHeader.ImageBase))
606                                 OPENSSL_NONPIC_relocated=1;
607                         }
608                 }
609 #endif
610                 break;
611         case DLL_THREAD_ATTACH:
612                 break;
613         case DLL_THREAD_DETACH:
614                 ERR_remove_state(0);
615                 break;
616         case DLL_PROCESS_DETACH:
617                 break;
618                 }
619         return(TRUE);
620         }
621 #endif
622
623 #if defined(_WIN32) && !defined(__CYGWIN__)
624 #include <tchar.h>
625
626 #if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
627 int OPENSSL_isservice(void)
628 { HWINSTA h;
629   DWORD len;
630   WCHAR *name;
631
632     (void)GetDesktopWindow(); /* return value is ignored */
633
634     h = GetProcessWindowStation();
635     if (h==NULL) return -1;
636
637     if (GetUserObjectInformationW (h,UOI_NAME,NULL,0,&len) ||
638         GetLastError() != ERROR_INSUFFICIENT_BUFFER)
639         return -1;
640
641     if (len>512) return -1;             /* paranoia */
642     len++,len&=~1;                      /* paranoia */
643 #ifdef _MSC_VER
644     name=(WCHAR *)_alloca(len+sizeof(WCHAR));
645 #else
646     name=(WCHAR *)alloca(len+sizeof(WCHAR));
647 #endif
648     if (!GetUserObjectInformationW (h,UOI_NAME,name,len,&len))
649         return -1;
650
651     len++,len&=~1;                      /* paranoia */
652     name[len/sizeof(WCHAR)]=L'\0';      /* paranoia */
653 #if 1
654     /* This doesn't cover "interactive" services [working with real
655      * WinSta0's] nor programs started non-interactively by Task
656      * Scheduler [those are working with SAWinSta]. */
657     if (wcsstr(name,L"Service-0x"))     return 1;
658 #else
659     /* This covers all non-interactive programs such as services. */
660     if (!wcsstr(name,L"WinSta0"))       return 1;
661 #endif
662     else                                return 0;
663 }
664 #else
665 int OPENSSL_isservice(void) { return 0; }
666 #endif
667
668 void OPENSSL_showfatal (const char *fmta,...)
669 { va_list ap;
670   TCHAR buf[256];
671   const TCHAR *fmt;
672 #ifdef STD_ERROR_HANDLE /* what a dirty trick! */
673   HANDLE h;
674
675     if ((h=GetStdHandle(STD_ERROR_HANDLE)) != NULL &&
676         GetFileType(h)!=FILE_TYPE_UNKNOWN)
677     {   /* must be console application */
678         va_start (ap,fmta);
679         vfprintf (stderr,fmta,ap);
680         va_end (ap);
681         return;
682     }
683 #endif
684
685     if (sizeof(TCHAR)==sizeof(char))
686         fmt=(const TCHAR *)fmta;
687     else do
688     { int    keepgoing;
689       size_t len_0=strlen(fmta)+1,i;
690       WCHAR *fmtw;
691
692 #ifdef _MSC_VER
693         fmtw = (WCHAR *)_alloca (len_0*sizeof(WCHAR));
694 #else
695         fmtw = (WCHAR *)alloca (len_0*sizeof(WCHAR));
696 #endif
697         if (fmtw == NULL) { fmt=(const TCHAR *)L"no stack?"; break; }
698
699 #ifndef OPENSSL_NO_MULTIBYTE
700         if (!MultiByteToWideChar(CP_ACP,0,fmta,len_0,fmtw,len_0))
701 #endif
702             for (i=0;i<len_0;i++) fmtw[i]=(WCHAR)fmta[i];
703
704         for (i=0;i<len_0;i++)
705         {   if (fmtw[i]==L'%') do
706             {   keepgoing=0;
707                 switch (fmtw[i+1])
708                 {   case L'0': case L'1': case L'2': case L'3': case L'4':
709                     case L'5': case L'6': case L'7': case L'8': case L'9':
710                     case L'.': case L'*':
711                     case L'-':  i++; keepgoing=1; break;
712                     case L's':  fmtw[i+1]=L'S';   break;
713                     case L'S':  fmtw[i+1]=L's';   break;
714                     case L'c':  fmtw[i+1]=L'C';   break;
715                     case L'C':  fmtw[i+1]=L'c';   break;
716                 }
717             } while (keepgoing);
718         }
719         fmt = (const TCHAR *)fmtw;
720     } while (0);
721
722     va_start (ap,fmta);
723     _vsntprintf (buf,sizeof(buf)/sizeof(TCHAR)-1,fmt,ap);
724     buf [sizeof(buf)/sizeof(TCHAR)-1] = _T('\0');
725     va_end (ap);
726
727 #if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
728     /* this -------------v--- guards NT-specific calls */
729     if (GetVersion() < 0x80000000 && OPENSSL_isservice())
730     {   HANDLE h = RegisterEventSource(0,_T("OPENSSL"));
731         const TCHAR *pmsg=buf;
732         ReportEvent(h,EVENTLOG_ERROR_TYPE,0,0,0,1,0,&pmsg,0);
733         DeregisterEventSource(h);
734     }
735     else
736 #endif
737         MessageBox (NULL,buf,_T("OpenSSL: FATAL"),MB_OK|MB_ICONSTOP);
738 }
739 #else
740 void OPENSSL_showfatal (const char *fmta,...)
741 { va_list ap;
742
743     va_start (ap,fmta);
744     vfprintf (stderr,fmta,ap);
745     va_end (ap);
746 }
747 int OPENSSL_isservice (void) { return 0; }
748 #endif
749
750 void OpenSSLDie(const char *file,int line,const char *assertion)
751         {
752         OPENSSL_showfatal(
753                 "%s(%d): OpenSSL internal error, assertion failed: %s\n",
754                 file,line,assertion);
755         abort();
756         }
757
758 void *OPENSSL_stderr(void)      { return stderr; }