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 /* Thread IDs. So ... if we build without OPENSSL_NO_DEPRECATED, then we leave
 419  * the existing implementations and just layer CRYPTO_THREADID_[get|cmp]
 420  * harmlessly on top. Otherwise, we only use 'id_callback' or 'idptr_callback'
 421  * if they're non-NULL, ie. we ignore CRYPTO_thread_id()'s fallbacks and we
 422  * move CRYPTO_thread_idptr()'s "&errno" fallback trick into
 423  * CRYPTO_THREADID_set(). */
 424
 425 void CRYPTO_set_id_callback(unsigned long (*func)(void))
 426         {
 427         id_callback=func;
 428         }
 429
 430 void CRYPTO_set_idptr_callback(void *(*func)(void))
 431         {
 432         idptr_callback=func;
 433         }
 434
 435 void CRYPTO_THREADID_set(CRYPTO_THREADID *id)
 436         {
 437         if (id_callback)
 438                 id->ulong = id_callback();
 439         else
 440                 id->ulong = 0;
 441
 442         if (idptr_callback)
 443                 id->ptr = idptr_callback();
 444         else
 445                 id->ptr = &errno;
 446         }
 447
 448 int CRYPTO_THREADID_cmp(const CRYPTO_THREADID *id1, const CRYPTO_THREADID *id2)
 449         {
 450         if (id1->ulong != id2->ulong)
 451                 return ((id1->ulong < id2->ulong) ? -1 : 1);
 452         if (id1->ptr != id2->ptr)
 453                 return ((id1->ptr < id2->ptr) ? -1 : 1);
 454         return 0;
 455         }
 456
 457 unsigned long CRYPTO_THREADID_hash(const CRYPTO_THREADID *id)
 458         {
 459         /* will need further processing to arrive at a good hash (mem_dbg.c uses this) */
 460         return id->ulong + (unsigned long)id->ptr;
 461         }
 462
 463 void CRYPTO_THREADID_cpy(CRYPTO_THREADID *dst, const CRYPTO_THREADID *src)
 464         {
 465         memcpy(dst, src, sizeof(*src));
 466         }
 467
 468 #ifndef OPENSSL_NO_DEPRECATED
 469 unsigned long (*CRYPTO_get_id_callback(void))(void)
 470         {
 471         return(id_callback);
 472         }
 473
 474 unsigned long CRYPTO_thread_id(void)
 475         {
 476         unsigned long ret=0;
 477
 478         if (id_callback == NULL)
 479                 {
 480 #ifdef OPENSSL_SYS_WIN16
 481                 ret=(unsigned long)GetCurrentTask();
 482 #elif defined(OPENSSL_SYS_WIN32)
 483                 ret=(unsigned long)GetCurrentThreadId();
 484 #elif defined(GETPID_IS_MEANINGLESS)
 485                 ret=1L;
 486 #elif defined(OPENSSL_SYS_BEOS)
 487                 ret=(unsigned long)find_thread(NULL);
 488 #else
 489                 ret=(unsigned long)getpid();
 490 #endif
 491                 }
 492         else
 493                 ret=id_callback();
 494         return(ret);
 495         }
 496 #endif
 497
 498 void CRYPTO_lock(int mode, int type, const char *file, int line)
 499         {
 500 #ifdef LOCK_DEBUG
 501                 {
 502                 char *rw_text,*operation_text;
 503                 CRYPTO_THREADID tid;
 504
 505                 if (mode & CRYPTO_LOCK)
 506                         operation_text="lock  ";
 507                 else if (mode & CRYPTO_UNLOCK)
 508                         operation_text="unlock";
 509                 else
 510                         operation_text="ERROR ";
 511
 512                 if (mode & CRYPTO_READ)
 513                         rw_text="r";
 514                 else if (mode & CRYPTO_WRITE)
 515                         rw_text="w";
 516                 else
 517                         rw_text="ERROR";
 518
 519                 CRYPTO_THREADID_set(&tid);
 520                 fprintf(stderr,"lock:%08lx:(%s)%s %-18s %s:%d\n",
 521                         CRYPTO_THREADID_hash(&tid), rw_text, operation_text,
 522                         CRYPTO_get_lock_name(type), file, line);
 523                 }
 524 #endif
 525         if (type < 0)
 526                 {
 527                 if (dynlock_lock_callback != NULL)
 528                         {
 529                         struct CRYPTO_dynlock_value *pointer
 530                                 = CRYPTO_get_dynlock_value(type);
 531
 532                         OPENSSL_assert(pointer != NULL);
 533
 534                         dynlock_lock_callback(mode, pointer, file, line);
 535
 536                         CRYPTO_destroy_dynlockid(type);
 537                         }
 538                 }
 539         else
 540                 if (locking_callback != NULL)
 541                         locking_callback(mode,type,file,line);
 542         }
 543
 544 int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
 545              int line)
 546         {
 547         int ret = 0;
 548 #ifdef LOCK_DEBUG
 549         CRYPTO_THREADID tid;
 550         CRYPTO_THREADID_set(&tid);
 551 #endif
 552
 553         if (add_lock_callback != NULL)
 554                 {
 555 #ifdef LOCK_DEBUG
 556                 int before= *pointer;
 557 #endif
 558
 559                 ret=add_lock_callback(pointer,amount,type,file,line);
 560 #ifdef LOCK_DEBUG
 561                 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
 562                         CRYPTO_THREADID_hash(&tid), before,amount,ret,
 563                         CRYPTO_get_lock_name(type),
 564                         file,line);
 565 #endif
 566                 }
 567         else
 568                 {
 569                 CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE,type,file,line);
 570
 571                 ret= *pointer+amount;
 572 #ifdef LOCK_DEBUG
 573                 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
 574                         CRYPTO_THREADID_hash(&tid), *pointer,amount,ret,
 575                         CRYPTO_get_lock_name(type),
 576                         file,line);
 577 #endif
 578                 *pointer=ret;
 579                 CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE,type,file,line);
 580                 }
 581         return(ret);
 582         }
 583
 584 const char *CRYPTO_get_lock_name(int type)
 585         {
 586         if (type < 0)
 587                 return("dynamic");
 588         else if (type < CRYPTO_NUM_LOCKS)
 589                 return(lock_names[type]);
 590         else if (type-CRYPTO_NUM_LOCKS > sk_num(app_locks))
 591                 return("ERROR");
 592         else
 593                 return(sk_value(app_locks,type-CRYPTO_NUM_LOCKS));
 594         }
 595
 596 #if     defined(__i386)   || defined(__i386__)   || defined(_M_IX86) || \
 597         defined(__INTEL__) || \
 598         defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64)
 599
 600 unsigned long  OPENSSL_ia32cap_P=0;
 601 unsigned long *OPENSSL_ia32cap_loc(void) { return &OPENSSL_ia32cap_P; }
 602
 603 #if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM) && !defined(I386_ONLY)
 604 #define OPENSSL_CPUID_SETUP
 605 void OPENSSL_cpuid_setup(void)
 606 { static int trigger=0;
 607   unsigned long OPENSSL_ia32_cpuid(void);
 608   char *env;
 609
 610     if (trigger)        return;
 611
 612     trigger=1;
 613     if ((env=getenv("OPENSSL_ia32cap")))
 614         OPENSSL_ia32cap_P = strtoul(env,NULL,0)|(1<<10);
 615     else
 616         OPENSSL_ia32cap_P = OPENSSL_ia32_cpuid()|(1<<10);
 617     /*
 618      * |(1<<10) sets a reserved bit to signal that variable
 619      * was initialized already... This is to avoid interference
 620      * with cpuid snippets in ELF .init segment.
 621      */
 622 }
 623 #endif
 624
 625 #else
 626 unsigned long *OPENSSL_ia32cap_loc(void) { return NULL; }
 627 #endif
 628 int OPENSSL_NONPIC_relocated = 0;
 629 #if !defined(OPENSSL_CPUID_SETUP) && !defined(OPENSSL_CPUID_OBJ)
 630 void OPENSSL_cpuid_setup(void) {}
 631 #endif
 632
 633 #if (defined(_WIN32) || defined(__CYGWIN__)) && defined(_WINDLL)
 634 #ifdef __CYGWIN__
 635 /* pick DLL_[PROCESS|THREAD]_[ATTACH|DETACH] definitions */
 636 #include <windows.h>
 637 #endif
 638
 639 /* All we really need to do is remove the 'error' state when a thread
 640  * detaches */
 641
 642 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason,
 643              LPVOID lpvReserved)
 644         {
 645         switch(fdwReason)
 646                 {
 647         case DLL_PROCESS_ATTACH:
 648                 OPENSSL_cpuid_setup();
 649 #if defined(_WIN32_WINNT)
 650                 {
 651                 IMAGE_DOS_HEADER *dos_header = (IMAGE_DOS_HEADER *)hinstDLL;
 652                 IMAGE_NT_HEADERS *nt_headers;
 653
 654                 if (dos_header->e_magic==IMAGE_DOS_SIGNATURE)
 655                         {
 656                         nt_headers = (IMAGE_NT_HEADERS *)((char *)dos_header
 657                                                 + dos_header->e_lfanew);
 658                         if (nt_headers->Signature==IMAGE_NT_SIGNATURE &&
 659                             hinstDLL!=(HINSTANCE)(nt_headers->OptionalHeader.ImageBase))
 660                                 OPENSSL_NONPIC_relocated=1;
 661                         }
 662                 }
 663 #endif
 664                 break;
 665         case DLL_THREAD_ATTACH:
 666                 break;
 667         case DLL_THREAD_DETACH:
 668                 ERR_remove_state(0);
 669                 break;
 670         case DLL_PROCESS_DETACH:
 671                 break;
 672                 }
 673         return(TRUE);
 674         }
 675 #endif
 676
 677 #if defined(_WIN32) && !defined(__CYGWIN__)
 678 #include <tchar.h>
 679
 680 #if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
 681 int OPENSSL_isservice(void)
 682 { HWINSTA h;
 683   DWORD len;
 684   WCHAR *name;
 685
 686     (void)GetDesktopWindow(); /* return value is ignored */
 687
 688     h = GetProcessWindowStation();
 689     if (h==NULL) return -1;
 690
 691     if (GetUserObjectInformationW (h,UOI_NAME,NULL,0,&len) ||
 692         GetLastError() != ERROR_INSUFFICIENT_BUFFER)
 693         return -1;
 694
 695     if (len>512) return -1;             /* paranoia */
 696     len++,len&=~1;                      /* paranoia */
 697 #ifdef _MSC_VER
 698     name=(WCHAR *)_alloca(len+sizeof(WCHAR));
 699 #else
 700     name=(WCHAR *)alloca(len+sizeof(WCHAR));
 701 #endif
 702     if (!GetUserObjectInformationW (h,UOI_NAME,name,len,&len))
 703         return -1;
 704
 705     len++,len&=~1;                      /* paranoia */
 706     name[len/sizeof(WCHAR)]=L'\0';      /* paranoia */
 707 #if 1
 708     /* This doesn't cover "interactive" services [working with real
 709      * WinSta0's] nor programs started non-interactively by Task
 710      * Scheduler [those are working with SAWinSta]. */
 711     if (wcsstr(name,L"Service-0x"))     return 1;
 712 #else
 713     /* This covers all non-interactive programs such as services. */
 714     if (!wcsstr(name,L"WinSta0"))       return 1;
 715 #endif
 716     else                                return 0;
 717 }
 718 #else
 719 int OPENSSL_isservice(void) { return 0; }
 720 #endif
 721
 722 void OPENSSL_showfatal (const char *fmta,...)
 723 { va_list ap;
 724   TCHAR buf[256];
 725   const TCHAR *fmt;
 726 #ifdef STD_ERROR_HANDLE /* what a dirty trick! */
 727   HANDLE h;
 728
 729     if ((h=GetStdHandle(STD_ERROR_HANDLE)) != NULL &&
 730         GetFileType(h)!=FILE_TYPE_UNKNOWN)
 731     {   /* must be console application */
 732         va_start (ap,fmta);
 733         vfprintf (stderr,fmta,ap);
 734         va_end (ap);
 735         return;
 736     }
 737 #endif
 738
 739     if (sizeof(TCHAR)==sizeof(char))
 740         fmt=(const TCHAR *)fmta;
 741     else do
 742     { int    keepgoing;
 743       size_t len_0=strlen(fmta)+1,i;
 744       WCHAR *fmtw;
 745
 746 #ifdef _MSC_VER
 747         fmtw = (WCHAR *)_alloca (len_0*sizeof(WCHAR));
 748 #else
 749         fmtw = (WCHAR *)alloca (len_0*sizeof(WCHAR));
 750 #endif
 751         if (fmtw == NULL) { fmt=(const TCHAR *)L"no stack?"; break; }
 752
 753 #ifndef OPENSSL_NO_MULTIBYTE
 754         if (!MultiByteToWideChar(CP_ACP,0,fmta,len_0,fmtw,len_0))
 755 #endif
 756             for (i=0;i<len_0;i++) fmtw[i]=(WCHAR)fmta[i];
 757
 758         for (i=0;i<len_0;i++)
 759         {   if (fmtw[i]==L'%') do
 760             {   keepgoing=0;
 761                 switch (fmtw[i+1])
 762                 {   case L'0': case L'1': case L'2': case L'3': case L'4':
 763                     case L'5': case L'6': case L'7': case L'8': case L'9':
 764                     case L'.': case L'*':
 765                     case L'-':  i++; keepgoing=1; break;
 766                     case L's':  fmtw[i+1]=L'S';   break;
 767                     case L'S':  fmtw[i+1]=L's';   break;
 768                     case L'c':  fmtw[i+1]=L'C';   break;
 769                     case L'C':  fmtw[i+1]=L'c';   break;
 770                 }
 771             } while (keepgoing);
 772         }
 773         fmt = (const TCHAR *)fmtw;
 774     } while (0);
 775
 776     va_start (ap,fmta);
 777     _vsntprintf (buf,sizeof(buf)/sizeof(TCHAR)-1,fmt,ap);
 778     buf [sizeof(buf)/sizeof(TCHAR)-1] = _T('\0');
 779     va_end (ap);
 780
 781 #if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
 782     /* this -------------v--- guards NT-specific calls */
 783     if (GetVersion() < 0x80000000 && OPENSSL_isservice())
 784     {   HANDLE h = RegisterEventSource(0,_T("OPENSSL"));
 785         const TCHAR *pmsg=buf;
 786         ReportEvent(h,EVENTLOG_ERROR_TYPE,0,0,0,1,0,&pmsg,0);
 787         DeregisterEventSource(h);
 788     }
 789     else
 790 #endif
 791         MessageBox (NULL,buf,_T("OpenSSL: FATAL"),MB_OK|MB_ICONSTOP);
 792 }
 793 #else
 794 void OPENSSL_showfatal (const char *fmta,...)
 795 { va_list ap;
 796
 797     va_start (ap,fmta);
 798     vfprintf (stderr,fmta,ap);
 799     va_end (ap);
 800 }
 801 int OPENSSL_isservice (void) { return 0; }
 802 #endif
 803
 804 void OpenSSLDie(const char *file,int line,const char *assertion)
 805         {
 806         OPENSSL_showfatal(
 807                 "%s(%d): OpenSSL internal error, assertion failed: %s\n",
 808                 file,line,assertion);
 809         abort();
 810         }
 811
 812 void *OPENSSL_stderr(void)      { return stderr; }