crypto/cryptlib.c

   1 /* crypto/cryptlib.c */
   2 /* ====================================================================
   3  * Copyright (c) 1998-2006 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)=0;
 186 static int (MS_FAR *add_lock_callback)(int *pointer,int amount,
 187         int type,const char *file,int line)=0;
 188 static unsigned long (MS_FAR *id_callback)(void)=0;
 189 static void *(MS_FAR *idptr_callback)(void)=0;
 190 static struct CRYPTO_dynlock_value *(MS_FAR *dynlock_create_callback)
 191         (const char *file,int line)=0;
 192 static void (MS_FAR *dynlock_lock_callback)(int mode,
 193         struct CRYPTO_dynlock_value *l, const char *file,int line)=0;
 194 static void (MS_FAR *dynlock_destroy_callback)(struct CRYPTO_dynlock_value *l,
 195         const char *file,int line)=0;
 196
 197 int CRYPTO_get_new_lockid(char *name)
 198         {
 199         char *str;
 200         int i;
 201
 202 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
 203         /* A hack to make Visual C++ 5.0 work correctly when linking as
 204          * a DLL using /MT. Without this, the application cannot use
 205          * and floating point printf's.
 206          * It also seems to be needed for Visual C 1.5 (win16) */
 207         SSLeay_MSVC5_hack=(double)name[0]*(double)name[1];
 208 #endif
 209
 210         if ((app_locks == NULL) && ((app_locks=sk_new_null()) == NULL))
 211                 {
 212                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
 213                 return(0);
 214                 }
 215         if ((str=BUF_strdup(name)) == NULL)
 216                 {
 217                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
 218                 return(0);
 219                 }
 220         i=sk_push(app_locks,str);
 221         if (!i)
 222                 OPENSSL_free(str);
 223         else
 224                 i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
 225         return(i);
 226         }
 227
 228 int CRYPTO_num_locks(void)
 229         {
 230         return CRYPTO_NUM_LOCKS;
 231         }
 232
 233 int CRYPTO_get_new_dynlockid(void)
 234         {
 235         int i = 0;
 236         CRYPTO_dynlock *pointer = NULL;
 237
 238         if (dynlock_create_callback == NULL)
 239                 {
 240                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK);
 241                 return(0);
 242                 }
 243         CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
 244         if ((dyn_locks == NULL)
 245                 && ((dyn_locks=sk_CRYPTO_dynlock_new_null()) == NULL))
 246                 {
 247                 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
 248                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
 249                 return(0);
 250                 }
 251         CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
 252
 253         pointer = (CRYPTO_dynlock *)OPENSSL_malloc(sizeof(CRYPTO_dynlock));
 254         if (pointer == NULL)
 255                 {
 256                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
 257                 return(0);
 258                 }
 259         pointer->references = 1;
 260         pointer->data = dynlock_create_callback(__FILE__,__LINE__);
 261         if (pointer->data == NULL)
 262                 {
 263                 OPENSSL_free(pointer);
 264                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
 265                 return(0);
 266                 }
 267
 268         CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
 269         /* First, try to find an existing empty slot */
 270         i=sk_CRYPTO_dynlock_find(dyn_locks,NULL);
 271         /* If there was none, push, thereby creating a new one */
 272         if (i == -1)
 273                 /* Since sk_push() returns the number of items on the
 274                    stack, not the location of the pushed item, we need
 275                    to transform the returned number into a position,
 276                    by decreasing it.  */
 277                 i=sk_CRYPTO_dynlock_push(dyn_locks,pointer) - 1;
 278         else
 279                 /* If we found a place with a NULL pointer, put our pointer
 280                    in it.  */
 281                 (void)sk_CRYPTO_dynlock_set(dyn_locks,i,pointer);
 282         CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
 283
 284         if (i == -1)
 285                 {
 286                 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
 287                 OPENSSL_free(pointer);
 288                 }
 289         else
 290                 i += 1; /* to avoid 0 */
 291         return -i;
 292         }
 293
 294 void CRYPTO_destroy_dynlockid(int i)
 295         {
 296         CRYPTO_dynlock *pointer = NULL;
 297         if (i)
 298                 i = -i-1;
 299         if (dynlock_destroy_callback == NULL)
 300                 return;
 301
 302         CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
 303
 304         if (dyn_locks == NULL || i >= sk_CRYPTO_dynlock_num(dyn_locks))
 305                 {
 306                 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
 307                 return;
 308                 }
 309         pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
 310         if (pointer != NULL)
 311                 {
 312                 --pointer->references;
 313 #ifdef REF_CHECK
 314                 if (pointer->references < 0)
 315                         {
 316                         fprintf(stderr,"CRYPTO_destroy_dynlockid, bad reference count\n");
 317                         abort();
 318                         }
 319                 else
 320 #endif
 321                         if (pointer->references <= 0)
 322                                 {
 323                                 (void)sk_CRYPTO_dynlock_set(dyn_locks, i, NULL);
 324                                 }
 325                         else
 326                                 pointer = NULL;
 327                 }
 328         CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
 329
 330         if (pointer)
 331                 {
 332                 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
 333                 OPENSSL_free(pointer);
 334                 }
 335         }
 336
 337 struct CRYPTO_dynlock_value *CRYPTO_get_dynlock_value(int i)
 338         {
 339         CRYPTO_dynlock *pointer = NULL;
 340         if (i)
 341                 i = -i-1;
 342
 343         CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
 344
 345         if (dyn_locks != NULL && i < sk_CRYPTO_dynlock_num(dyn_locks))
 346                 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
 347         if (pointer)
 348                 pointer->references++;
 349
 350         CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
 351
 352         if (pointer)
 353                 return pointer->data;
 354         return NULL;
 355         }
 356
 357 struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void))
 358         (const char *file,int line)
 359         {
 360         return(dynlock_create_callback);
 361         }
 362
 363 void (*CRYPTO_get_dynlock_lock_callback(void))(int mode,
 364         struct CRYPTO_dynlock_value *l, const char *file,int line)
 365         {
 366         return(dynlock_lock_callback);
 367         }
 368
 369 void (*CRYPTO_get_dynlock_destroy_callback(void))
 370         (struct CRYPTO_dynlock_value *l, const char *file,int line)
 371         {
 372         return(dynlock_destroy_callback);
 373         }
 374
 375 void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(*func)
 376         (const char *file, int line))
 377         {
 378         dynlock_create_callback=func;
 379         }
 380
 381 void CRYPTO_set_dynlock_lock_callback(void (*func)(int mode,
 382         struct CRYPTO_dynlock_value *l, const char *file, int line))
 383         {
 384         dynlock_lock_callback=func;
 385         }
 386
 387 void CRYPTO_set_dynlock_destroy_callback(void (*func)
 388         (struct CRYPTO_dynlock_value *l, const char *file, int line))
 389         {
 390         dynlock_destroy_callback=func;
 391         }
 392
 393
 394 void (*CRYPTO_get_locking_callback(void))(int mode,int type,const char *file,
 395                 int line)
 396         {
 397         return(locking_callback);
 398         }
 399
 400 int (*CRYPTO_get_add_lock_callback(void))(int *num,int mount,int type,
 401                                           const char *file,int line)
 402         {
 403         return(add_lock_callback);
 404         }
 405
 406 void CRYPTO_set_locking_callback(void (*func)(int mode,int type,
 407                                               const char *file,int line))
 408         {
 409         locking_callback=func;
 410         }
 411
 412 void CRYPTO_set_add_lock_callback(int (*func)(int *num,int mount,int type,
 413                                               const char *file,int line))
 414         {
 415         add_lock_callback=func;
 416         }
 417
 418 unsigned long (*CRYPTO_get_id_callback(void))(void)
 419         {
 420         return(id_callback);
 421         }
 422
 423 void CRYPTO_set_id_callback(unsigned long (*func)(void))
 424         {
 425         id_callback=func;
 426         }
 427
 428 unsigned long CRYPTO_thread_id(void)
 429         {
 430         unsigned long ret=0;
 431
 432         if (id_callback == NULL)
 433                 {
 434 #ifdef OPENSSL_SYS_WIN16
 435                 ret=(unsigned long)GetCurrentTask();
 436 #elif defined(OPENSSL_SYS_WIN32)
 437                 ret=(unsigned long)GetCurrentThreadId();
 438 #elif defined(GETPID_IS_MEANINGLESS)
 439                 ret=1L;
 440 #elif defined(OPENSSL_SYS_BEOS)
 441                 ret=(unsigned long)find_thread(NULL);
 442 #else
 443                 ret=(unsigned long)getpid();
 444 #endif
 445                 }
 446         else
 447                 ret=id_callback();
 448         return(ret);
 449         }
 450
 451 void *(*CRYPTO_get_idptr_callback(void))(void)
 452         {
 453         return(idptr_callback);
 454         }
 455
 456 void CRYPTO_set_idptr_callback(void *(*func)(void))
 457         {
 458         idptr_callback=func;
 459         }
 460
 461 void *CRYPTO_thread_idptr(void)
 462         {
 463         void *ret=NULL;
 464
 465         if (idptr_callback == NULL)
 466                 ret = &errno;
 467         else
 468                 ret = idptr_callback();
 469
 470         return ret;
 471         }
 472
 473 void CRYPTO_lock(int mode, int type, const char *file, int line)
 474         {
 475 #ifdef LOCK_DEBUG
 476                 {
 477                 char *rw_text,*operation_text;
 478
 479                 if (mode & CRYPTO_LOCK)
 480                         operation_text="lock  ";
 481                 else if (mode & CRYPTO_UNLOCK)
 482                         operation_text="unlock";
 483                 else
 484                         operation_text="ERROR ";
 485
 486                 if (mode & CRYPTO_READ)
 487                         rw_text="r";
 488                 else if (mode & CRYPTO_WRITE)
 489                         rw_text="w";
 490                 else
 491                         rw_text="ERROR";
 492
 493                 fprintf(stderr,"lock:%08lx/%08p:(%s)%s %-18s %s:%d\n",
 494                         CRYPTO_thread_id(), CRYPTO_thread_idptr(), rw_text, operation_text,
 495                         CRYPTO_get_lock_name(type), file, line);
 496                 }
 497 #endif
 498         if (type < 0)
 499                 {
 500                 if (dynlock_lock_callback != NULL)
 501                         {
 502                         struct CRYPTO_dynlock_value *pointer
 503                                 = CRYPTO_get_dynlock_value(type);
 504
 505                         OPENSSL_assert(pointer != NULL);
 506
 507                         dynlock_lock_callback(mode, pointer, file, line);
 508
 509                         CRYPTO_destroy_dynlockid(type);
 510                         }
 511                 }
 512         else
 513                 if (locking_callback != NULL)
 514                         locking_callback(mode,type,file,line);
 515         }
 516
 517 int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
 518              int line)
 519         {
 520         int ret = 0;
 521
 522         if (add_lock_callback != NULL)
 523                 {
 524 #ifdef LOCK_DEBUG
 525                 int before= *pointer;
 526 #endif
 527
 528                 ret=add_lock_callback(pointer,amount,type,file,line);
 529 #ifdef LOCK_DEBUG
 530                 fprintf(stderr,"ladd:%08lx/%0xp:%2d+%2d->%2d %-18s %s:%d\n",
 531                         CRYPTO_thread_id(), CRYPTO_thread_idptr(),
 532                         before,amount,ret,
 533                         CRYPTO_get_lock_name(type),
 534                         file,line);
 535 #endif
 536                 }
 537         else
 538                 {
 539                 CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE,type,file,line);
 540
 541                 ret= *pointer+amount;
 542 #ifdef LOCK_DEBUG
 543                 fprintf(stderr,"ladd:%08lx/%0xp:%2d+%2d->%2d %-18s %s:%d\n",
 544                         CRYPTO_thread_id(), CRYPTO_thread_idptr(),
 545                         *pointer,amount,ret,
 546                         CRYPTO_get_lock_name(type),
 547                         file,line);
 548 #endif
 549                 *pointer=ret;
 550                 CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE,type,file,line);
 551                 }
 552         return(ret);
 553         }
 554
 555 const char *CRYPTO_get_lock_name(int type)
 556         {
 557         if (type < 0)
 558                 return("dynamic");
 559         else if (type < CRYPTO_NUM_LOCKS)
 560                 return(lock_names[type]);
 561         else if (type-CRYPTO_NUM_LOCKS > sk_num(app_locks))
 562                 return("ERROR");
 563         else
 564                 return(sk_value(app_locks,type-CRYPTO_NUM_LOCKS));
 565         }
 566
 567 #if     defined(__i386)   || defined(__i386__)   || defined(_M_IX86) || \
 568         defined(__INTEL__) || \
 569         defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64)
 570
 571 unsigned long  OPENSSL_ia32cap_P=0;
 572 unsigned long *OPENSSL_ia32cap_loc(void) { return &OPENSSL_ia32cap_P; }
 573
 574 #if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM) && !defined(I386_ONLY)
 575 #define OPENSSL_CPUID_SETUP
 576 void OPENSSL_cpuid_setup(void)
 577 { static int trigger=0;
 578   unsigned long OPENSSL_ia32_cpuid(void);
 579   char *env;
 580
 581     if (trigger)        return;
 582
 583     trigger=1;
 584     if ((env=getenv("OPENSSL_ia32cap")))
 585         OPENSSL_ia32cap_P = strtoul(env,NULL,0)|(1<<10);
 586     else
 587         OPENSSL_ia32cap_P = OPENSSL_ia32_cpuid()|(1<<10);
 588     /*
 589      * |(1<<10) sets a reserved bit to signal that variable
 590      * was initialized already... This is to avoid interference
 591      * with cpuid snippets in ELF .init segment.
 592      */
 593 }
 594 #endif
 595
 596 #else
 597 unsigned long *OPENSSL_ia32cap_loc(void) { return NULL; }
 598 #endif
 599 int OPENSSL_NONPIC_relocated = 0;
 600 #if !defined(OPENSSL_CPUID_SETUP) && !defined(OPENSSL_CPUID_OBJ)
 601 void OPENSSL_cpuid_setup(void) {}
 602 #endif
 603
 604 #if (defined(_WIN32) || defined(__CYGWIN__)) && defined(_WINDLL)
 605 #ifdef __CYGWIN__
 606 /* pick DLL_[PROCESS|THREAD]_[ATTACH|DETACH] definitions */
 607 #include <windows.h>
 608 #endif
 609
 610 /* All we really need to do is remove the 'error' state when a thread
 611  * detaches */
 612
 613 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason,
 614              LPVOID lpvReserved)
 615         {
 616         switch(fdwReason)
 617                 {
 618         case DLL_PROCESS_ATTACH:
 619                 OPENSSL_cpuid_setup();
 620 #if defined(_WIN32_WINNT)
 621                 {
 622                 IMAGE_DOS_HEADER *dos_header = (IMAGE_DOS_HEADER *)hinstDLL;
 623                 IMAGE_NT_HEADERS *nt_headers;
 624
 625                 if (dos_header->e_magic==IMAGE_DOS_SIGNATURE)
 626                         {
 627                         nt_headers = (IMAGE_NT_HEADERS *)((char *)dos_header
 628                                                 + dos_header->e_lfanew);
 629                         if (nt_headers->Signature==IMAGE_NT_SIGNATURE &&
 630                             hinstDLL!=(HINSTANCE)(nt_headers->OptionalHeader.ImageBase))
 631                                 OPENSSL_NONPIC_relocated=1;
 632                         }
 633                 }
 634 #endif
 635                 break;
 636         case DLL_THREAD_ATTACH:
 637                 break;
 638         case DLL_THREAD_DETACH:
 639                 ERR_remove_state(0);
 640                 break;
 641         case DLL_PROCESS_DETACH:
 642                 break;
 643                 }
 644         return(TRUE);
 645         }
 646 #endif
 647
 648 #if defined(_WIN32) && !defined(__CYGWIN__)
 649 #include <tchar.h>
 650
 651 #if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
 652 int OPENSSL_isservice(void)
 653 { HWINSTA h;
 654   DWORD len;
 655   WCHAR *name;
 656
 657     (void)GetDesktopWindow(); /* return value is ignored */
 658
 659     h = GetProcessWindowStation();
 660     if (h==NULL) return -1;
 661
 662     if (GetUserObjectInformationW (h,UOI_NAME,NULL,0,&len) ||
 663         GetLastError() != ERROR_INSUFFICIENT_BUFFER)
 664         return -1;
 665
 666     if (len>512) return -1;             /* paranoia */
 667     len++,len&=~1;                      /* paranoia */
 668 #ifdef _MSC_VER
 669     name=(WCHAR *)_alloca(len+sizeof(WCHAR));
 670 #else
 671     name=(WCHAR *)alloca(len+sizeof(WCHAR));
 672 #endif
 673     if (!GetUserObjectInformationW (h,UOI_NAME,name,len,&len))
 674         return -1;
 675
 676     len++,len&=~1;                      /* paranoia */
 677     name[len/sizeof(WCHAR)]=L'\0';      /* paranoia */
 678 #if 1
 679     /* This doesn't cover "interactive" services [working with real
 680      * WinSta0's] nor programs started non-interactively by Task
 681      * Scheduler [those are working with SAWinSta]. */
 682     if (wcsstr(name,L"Service-0x"))     return 1;
 683 #else
 684     /* This covers all non-interactive programs such as services. */
 685     if (!wcsstr(name,L"WinSta0"))       return 1;
 686 #endif
 687     else                                return 0;
 688 }
 689 #else
 690 int OPENSSL_isservice(void) { return 0; }
 691 #endif
 692
 693 void OPENSSL_showfatal (const char *fmta,...)
 694 { va_list ap;
 695   TCHAR buf[256];
 696   const TCHAR *fmt;
 697 #ifdef STD_ERROR_HANDLE /* what a dirty trick! */
 698   HANDLE h;
 699
 700     if ((h=GetStdHandle(STD_ERROR_HANDLE)) != NULL &&
 701         GetFileType(h)!=FILE_TYPE_UNKNOWN)
 702     {   /* must be console application */
 703         va_start (ap,fmta);
 704         vfprintf (stderr,fmta,ap);
 705         va_end (ap);
 706         return;
 707     }
 708 #endif
 709
 710     if (sizeof(TCHAR)==sizeof(char))
 711         fmt=(const TCHAR *)fmta;
 712     else do
 713     { int    keepgoing;
 714       size_t len_0=strlen(fmta)+1,i;
 715       WCHAR *fmtw;
 716
 717 #ifdef _MSC_VER
 718         fmtw = (WCHAR *)_alloca (len_0*sizeof(WCHAR));
 719 #else
 720         fmtw = (WCHAR *)alloca (len_0*sizeof(WCHAR));
 721 #endif
 722         if (fmtw == NULL) { fmt=(const TCHAR *)L"no stack?"; break; }
 723
 724 #ifndef OPENSSL_NO_MULTIBYTE
 725         if (!MultiByteToWideChar(CP_ACP,0,fmta,len_0,fmtw,len_0))
 726 #endif
 727             for (i=0;i<len_0;i++) fmtw[i]=(WCHAR)fmta[i];
 728
 729         for (i=0;i<len_0;i++)
 730         {   if (fmtw[i]==L'%') do
 731             {   keepgoing=0;
 732                 switch (fmtw[i+1])
 733                 {   case L'0': case L'1': case L'2': case L'3': case L'4':
 734                     case L'5': case L'6': case L'7': case L'8': case L'9':
 735                     case L'.': case L'*':
 736                     case L'-':  i++; keepgoing=1; break;
 737                     case L's':  fmtw[i+1]=L'S';   break;
 738                     case L'S':  fmtw[i+1]=L's';   break;
 739                     case L'c':  fmtw[i+1]=L'C';   break;
 740                     case L'C':  fmtw[i+1]=L'c';   break;
 741                 }
 742             } while (keepgoing);
 743         }
 744         fmt = (const TCHAR *)fmtw;
 745     } while (0);
 746
 747     va_start (ap,fmta);
 748     _vsntprintf (buf,sizeof(buf)/sizeof(TCHAR)-1,fmt,ap);
 749     buf [sizeof(buf)/sizeof(TCHAR)-1] = _T('\0');
 750     va_end (ap);
 751
 752 #if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
 753     /* this -------------v--- guards NT-specific calls */
 754     if (GetVersion() < 0x80000000 && OPENSSL_isservice())
 755     {   HANDLE h = RegisterEventSource(0,_T("OPENSSL"));
 756         const TCHAR *pmsg=buf;
 757         ReportEvent(h,EVENTLOG_ERROR_TYPE,0,0,0,1,0,&pmsg,0);
 758         DeregisterEventSource(h);
 759     }
 760     else
 761 #endif
 762         MessageBox (NULL,buf,_T("OpenSSL: FATAL"),MB_OK|MB_ICONSTOP);
 763 }
 764 #else
 765 void OPENSSL_showfatal (const char *fmta,...)
 766 { va_list ap;
 767
 768     va_start (ap,fmta);
 769     vfprintf (stderr,fmta,ap);
 770     va_end (ap);
 771 }
 772 int OPENSSL_isservice (void) { return 0; }
 773 #endif
 774
 775 void OpenSSLDie(const char *file,int line,const char *assertion)
 776         {
 777         OPENSSL_showfatal(
 778                 "%s(%d): OpenSSL internal error, assertion failed: %s\n",
 779                 file,line,assertion);
 780         abort();
 781         }
 782
 783 void *OPENSSL_stderr(void)      { return stderr; }