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
 126 /* real #defines in crypto.h, keep these upto date */
 127 static const char* const lock_names[CRYPTO_NUM_LOCKS] =
 128         {
 129         "<<ERROR>>",
 130         "err",
 131         "ex_data",
 132         "x509",
 133         "x509_info",
 134         "x509_pkey",
 135         "x509_crl",
 136         "x509_req",
 137         "dsa",
 138         "rsa",
 139         "evp_pkey",
 140         "x509_store",
 141         "ssl_ctx",
 142         "ssl_cert",
 143         "ssl_session",
 144         "ssl_sess_cert",
 145         "ssl",
 146         "ssl_method",
 147         "rand",
 148         "rand2",
 149         "debug_malloc",
 150         "BIO",
 151         "gethostbyname",
 152         "getservbyname",
 153         "readdir",
 154         "RSA_blinding",
 155         "dh",
 156         "debug_malloc2",
 157         "dso",
 158         "dynlock",
 159         "engine",
 160         "ui",
 161         "ecdsa",
 162         "ec",
 163         "ecdh",
 164         "bn",
 165         "ec_pre_comp",
 166         "store",
 167         "comp",
 168 #if CRYPTO_NUM_LOCKS != 39
 169 # error "Inconsistency between crypto.h and cryptlib.c"
 170 #endif
 171         };
 172
 173 /* This is for applications to allocate new type names in the non-dynamic
 174    array of lock names.  These are numbered with positive numbers.  */
 175 static STACK_OF(STRING) *app_locks=NULL;
 176
 177 /* For applications that want a more dynamic way of handling threads, the
 178    following stack is used.  These are externally numbered with negative
 179    numbers.  */
 180 static STACK_OF(CRYPTO_dynlock) *dyn_locks=NULL;
 181
 182
 183 static void (MS_FAR *locking_callback)(int mode,int type,
 184         const char *file,int line)=0;
 185 static int (MS_FAR *add_lock_callback)(int *pointer,int amount,
 186         int type,const char *file,int line)=0;
 187 #ifndef OPENSSL_NO_DEPRECATED
 188 static unsigned long (MS_FAR *id_callback)(void)=0;
 189 #endif
 190 static void (MS_FAR *threadid_callback)(CRYPTO_THREADID *)=0;
 191 static struct CRYPTO_dynlock_value *(MS_FAR *dynlock_create_callback)
 192         (const char *file,int line)=0;
 193 static void (MS_FAR *dynlock_lock_callback)(int mode,
 194         struct CRYPTO_dynlock_value *l, const char *file,int line)=0;
 195 static void (MS_FAR *dynlock_destroy_callback)(struct CRYPTO_dynlock_value *l,
 196         const char *file,int line)=0;
 197
 198 int CRYPTO_get_new_lockid(char *name)
 199         {
 200         char *str;
 201         int i;
 202
 203 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
 204         /* A hack to make Visual C++ 5.0 work correctly when linking as
 205          * a DLL using /MT. Without this, the application cannot use
 206          * and floating point printf's.
 207          * It also seems to be needed for Visual C 1.5 (win16) */
 208         SSLeay_MSVC5_hack=(double)name[0]*(double)name[1];
 209 #endif
 210
 211         if ((app_locks == NULL) && ((app_locks=sk_STRING_new_null()) == NULL))
 212                 {
 213                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
 214                 return(0);
 215                 }
 216         if ((str=BUF_strdup(name)) == NULL)
 217                 {
 218                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
 219                 return(0);
 220                 }
 221         i=sk_STRING_push(app_locks,str);
 222         if (!i)
 223                 OPENSSL_free(str);
 224         else
 225                 i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
 226         return(i);
 227         }
 228
 229 int CRYPTO_num_locks(void)
 230         {
 231         return CRYPTO_NUM_LOCKS;
 232         }
 233
 234 int CRYPTO_get_new_dynlockid(void)
 235         {
 236         int i = 0;
 237         CRYPTO_dynlock *pointer = NULL;
 238
 239         if (dynlock_create_callback == NULL)
 240                 {
 241                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK);
 242                 return(0);
 243                 }
 244         CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
 245         if ((dyn_locks == NULL)
 246                 && ((dyn_locks=sk_CRYPTO_dynlock_new_null()) == NULL))
 247                 {
 248                 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
 249                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
 250                 return(0);
 251                 }
 252         CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
 253
 254         pointer = (CRYPTO_dynlock *)OPENSSL_malloc(sizeof(CRYPTO_dynlock));
 255         if (pointer == NULL)
 256                 {
 257                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
 258                 return(0);
 259                 }
 260         pointer->references = 1;
 261         pointer->data = dynlock_create_callback(__FILE__,__LINE__);
 262         if (pointer->data == NULL)
 263                 {
 264                 OPENSSL_free(pointer);
 265                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,ERR_R_MALLOC_FAILURE);
 266                 return(0);
 267                 }
 268
 269         CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
 270         /* First, try to find an existing empty slot */
 271         i=sk_CRYPTO_dynlock_find(dyn_locks,NULL);
 272         /* If there was none, push, thereby creating a new one */
 273         if (i == -1)
 274                 /* Since sk_push() returns the number of items on the
 275                    stack, not the location of the pushed item, we need
 276                    to transform the returned number into a position,
 277                    by decreasing it.  */
 278                 i=sk_CRYPTO_dynlock_push(dyn_locks,pointer) - 1;
 279         else
 280                 /* If we found a place with a NULL pointer, put our pointer
 281                    in it.  */
 282                 (void)sk_CRYPTO_dynlock_set(dyn_locks,i,pointer);
 283         CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
 284
 285         if (i == -1)
 286                 {
 287                 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
 288                 OPENSSL_free(pointer);
 289                 }
 290         else
 291                 i += 1; /* to avoid 0 */
 292         return -i;
 293         }
 294
 295 void CRYPTO_destroy_dynlockid(int i)
 296         {
 297         CRYPTO_dynlock *pointer = NULL;
 298         if (i)
 299                 i = -i-1;
 300         if (dynlock_destroy_callback == NULL)
 301                 return;
 302
 303         CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
 304
 305         if (dyn_locks == NULL || i >= sk_CRYPTO_dynlock_num(dyn_locks))
 306                 {
 307                 CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
 308                 return;
 309                 }
 310         pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
 311         if (pointer != NULL)
 312                 {
 313                 --pointer->references;
 314 #ifdef REF_CHECK
 315                 if (pointer->references < 0)
 316                         {
 317                         fprintf(stderr,"CRYPTO_destroy_dynlockid, bad reference count\n");
 318                         abort();
 319                         }
 320                 else
 321 #endif
 322                         if (pointer->references <= 0)
 323                                 {
 324                                 (void)sk_CRYPTO_dynlock_set(dyn_locks, i, NULL);
 325                                 }
 326                         else
 327                                 pointer = NULL;
 328                 }
 329         CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
 330
 331         if (pointer)
 332                 {
 333                 dynlock_destroy_callback(pointer->data,__FILE__,__LINE__);
 334                 OPENSSL_free(pointer);
 335                 }
 336         }
 337
 338 struct CRYPTO_dynlock_value *CRYPTO_get_dynlock_value(int i)
 339         {
 340         CRYPTO_dynlock *pointer = NULL;
 341         if (i)
 342                 i = -i-1;
 343
 344         CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
 345
 346         if (dyn_locks != NULL && i < sk_CRYPTO_dynlock_num(dyn_locks))
 347                 pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
 348         if (pointer)
 349                 pointer->references++;
 350
 351         CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
 352
 353         if (pointer)
 354                 return pointer->data;
 355         return NULL;
 356         }
 357
 358 struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void))
 359         (const char *file,int line)
 360         {
 361         return(dynlock_create_callback);
 362         }
 363
 364 void (*CRYPTO_get_dynlock_lock_callback(void))(int mode,
 365         struct CRYPTO_dynlock_value *l, const char *file,int line)
 366         {
 367         return(dynlock_lock_callback);
 368         }
 369
 370 void (*CRYPTO_get_dynlock_destroy_callback(void))
 371         (struct CRYPTO_dynlock_value *l, const char *file,int line)
 372         {
 373         return(dynlock_destroy_callback);
 374         }
 375
 376 void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(*func)
 377         (const char *file, int line))
 378         {
 379         dynlock_create_callback=func;
 380         }
 381
 382 void CRYPTO_set_dynlock_lock_callback(void (*func)(int mode,
 383         struct CRYPTO_dynlock_value *l, const char *file, int line))
 384         {
 385         dynlock_lock_callback=func;
 386         }
 387
 388 void CRYPTO_set_dynlock_destroy_callback(void (*func)
 389         (struct CRYPTO_dynlock_value *l, const char *file, int line))
 390         {
 391         dynlock_destroy_callback=func;
 392         }
 393
 394
 395 void (*CRYPTO_get_locking_callback(void))(int mode,int type,const char *file,
 396                 int line)
 397         {
 398         return(locking_callback);
 399         }
 400
 401 int (*CRYPTO_get_add_lock_callback(void))(int *num,int mount,int type,
 402                                           const char *file,int line)
 403         {
 404         return(add_lock_callback);
 405         }
 406
 407 void CRYPTO_set_locking_callback(void (*func)(int mode,int type,
 408                                               const char *file,int line))
 409         {
 410         locking_callback=func;
 411         }
 412
 413 void CRYPTO_set_add_lock_callback(int (*func)(int *num,int mount,int type,
 414                                               const char *file,int line))
 415         {
 416         add_lock_callback=func;
 417         }
 418
 419 /* the memset() here and in set_pointer() seem overkill, but for the sake of
 420  * CRYPTO_THREADID_cmp() this avoids any platform silliness that might cause two
 421  * "equal" THREADID structs to not be memcmp()-identical. */
 422 void CRYPTO_THREADID_set_numeric(CRYPTO_THREADID *id, unsigned long val)
 423         {
 424         memset(id, 0, sizeof(*id));
 425         id->val = val;
 426         }
 427
 428 static const unsigned char hash_coeffs[] = { 3, 5, 7, 11, 13, 17, 19, 23 };
 429 void CRYPTO_THREADID_set_pointer(CRYPTO_THREADID *id, void *ptr)
 430         {
 431         unsigned char *dest = (void *)&id->val;
 432         unsigned int accum = 0;
 433         unsigned char dnum = sizeof(id->val);
 434
 435         memset(id, 0, sizeof(*id));
 436         id->ptr = ptr;
 437         if (sizeof(id->val) >= sizeof(id->ptr))
 438                 {
 439                 /* 'ptr' can be embedded in 'val' without loss of uniqueness */
 440                 id->val = (unsigned long)id->ptr;
 441                 return;
 442                 }
 443         /* hash ptr ==> val. Each byte of 'val' gets the mod-256 total of a
 444          * linear function over the bytes in 'ptr', the co-efficients of which
 445          * are a sequence of low-primes (hash_coeffs is an 8-element cycle) -
 446          * the starting prime for the sequence varies for each byte of 'val'
 447          * (unique polynomials unless pointers are >64-bit). For added spice,
 448          * the totals accumulate rather than restarting from zero, and the index
 449          * of the 'val' byte is added each time (position dependence). If I was
 450          * a black-belt, I'd scan big-endian pointers in reverse to give
 451          * low-order bits more play, but this isn't crypto and I'd prefer nobody
 452          * mistake it as such. Plus I'm lazy. */
 453         while (dnum--)
 454                 {
 455                 const unsigned char *src = (void *)&id->ptr;
 456                 unsigned char snum = sizeof(id->ptr);
 457                 while (snum--)
 458                         accum += *(src++) * hash_coeffs[(snum + dnum) & 7];
 459                 accum += dnum;
 460                 *(dest++) = accum & 255;
 461                 }
 462         }
 463
 464 int CRYPTO_THREADID_set_callback(void (*func)(CRYPTO_THREADID *))
 465         {
 466         if (threadid_callback)
 467                 return 0;
 468         threadid_callback = func;
 469         return 1;
 470         }
 471
 472 void (*CRYPTO_THREADID_get_callback(void))(CRYPTO_THREADID *)
 473         {
 474         return threadid_callback;
 475         }
 476
 477 void CRYPTO_THREADID_current(CRYPTO_THREADID *id)
 478         {
 479         if (threadid_callback)
 480                 {
 481                 threadid_callback(id);
 482                 return;
 483                 }
 484 #ifndef OPENSSL_NO_DEPRECATED
 485         /* If the deprecated callback was set, fall back to that */
 486         if (id_callback)
 487                 {
 488                 CRYPTO_THREADID_set_numeric(id, id_callback());
 489                 return;
 490                 }
 491 #endif
 492         /* Else pick a backup */
 493 #ifdef OPENSSL_SYS_WIN16
 494         CRYPTO_THREADID_set_numeric(id, (unsigned long)GetCurrentTask());
 495 #elif defined(OPENSSL_SYS_WIN32)
 496         CRYPTO_THREADID_set_numeric(id, (unsigned long)GetCurrentThreadId());
 497 #elif defined(OPENSSL_SYS_BEOS)
 498         CRYPTO_THREADID_set_numeric(id, (unsigned long)find_thread(NULL));
 499 #else
 500         /* For everything else, default to using the address of 'errno' */
 501         CRYPTO_THREADID_set_pointer(id, &errno);
 502 #endif
 503         }
 504
 505 int CRYPTO_THREADID_cmp(const CRYPTO_THREADID *a, const CRYPTO_THREADID *b)
 506         {
 507         return memcmp(a, b, sizeof(*a));
 508         }
 509
 510 void CRYPTO_THREADID_cpy(CRYPTO_THREADID *dest, const CRYPTO_THREADID *src)
 511         {
 512         memcpy(dest, src, sizeof(*src));
 513         }
 514
 515 unsigned long CRYPTO_THREADID_hash(const CRYPTO_THREADID *id)
 516         {
 517         return id->val;
 518         }
 519
 520 #ifndef OPENSSL_NO_DEPRECATED
 521 unsigned long (*CRYPTO_get_id_callback(void))(void)
 522         {
 523         return(id_callback);
 524         }
 525
 526 void CRYPTO_set_id_callback(unsigned long (*func)(void))
 527         {
 528         id_callback=func;
 529         }
 530
 531 unsigned long CRYPTO_thread_id(void)
 532         {
 533         unsigned long ret=0;
 534
 535         if (id_callback == NULL)
 536                 {
 537 #ifdef OPENSSL_SYS_WIN16
 538                 ret=(unsigned long)GetCurrentTask();
 539 #elif defined(OPENSSL_SYS_WIN32)
 540                 ret=(unsigned long)GetCurrentThreadId();
 541 #elif defined(GETPID_IS_MEANINGLESS)
 542                 ret=1L;
 543 #elif defined(OPENSSL_SYS_BEOS)
 544                 ret=(unsigned long)find_thread(NULL);
 545 #else
 546                 ret=(unsigned long)getpid();
 547 #endif
 548                 }
 549         else
 550                 ret=id_callback();
 551         return(ret);
 552         }
 553 #endif
 554
 555 void CRYPTO_lock(int mode, int type, const char *file, int line)
 556         {
 557 #ifdef LOCK_DEBUG
 558                 {
 559                 CRYPTO_THREADID id;
 560                 char *rw_text,*operation_text;
 561
 562                 if (mode & CRYPTO_LOCK)
 563                         operation_text="lock  ";
 564                 else if (mode & CRYPTO_UNLOCK)
 565                         operation_text="unlock";
 566                 else
 567                         operation_text="ERROR ";
 568
 569                 if (mode & CRYPTO_READ)
 570                         rw_text="r";
 571                 else if (mode & CRYPTO_WRITE)
 572                         rw_text="w";
 573                 else
 574                         rw_text="ERROR";
 575
 576                 CRYPTO_THREADID_current(&id);
 577                 fprintf(stderr,"lock:%08lx:(%s)%s %-18s %s:%d\n",
 578                         CRYPTO_THREADID_hash(&id), rw_text, operation_text,
 579                         CRYPTO_get_lock_name(type), file, line);
 580                 }
 581 #endif
 582         if (type < 0)
 583                 {
 584                 if (dynlock_lock_callback != NULL)
 585                         {
 586                         struct CRYPTO_dynlock_value *pointer
 587                                 = CRYPTO_get_dynlock_value(type);
 588
 589                         OPENSSL_assert(pointer != NULL);
 590
 591                         dynlock_lock_callback(mode, pointer, file, line);
 592
 593                         CRYPTO_destroy_dynlockid(type);
 594                         }
 595                 }
 596         else
 597                 if (locking_callback != NULL)
 598                         locking_callback(mode,type,file,line);
 599         }
 600
 601 int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
 602              int line)
 603         {
 604         int ret = 0;
 605
 606         if (add_lock_callback != NULL)
 607                 {
 608 #ifdef LOCK_DEBUG
 609                 int before= *pointer;
 610 #endif
 611
 612                 ret=add_lock_callback(pointer,amount,type,file,line);
 613 #ifdef LOCK_DEBUG
 614                 {
 615                 CRYPTO_THREADID id;
 616                 CRYPTO_THREADID_current(&id);
 617                 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
 618                         CRYPTO_THREADID_hash(&id), before,amount,ret,
 619                         CRYPTO_get_lock_name(type),
 620                         file,line);
 621                 }
 622 #endif
 623                 }
 624         else
 625                 {
 626                 CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE,type,file,line);
 627
 628                 ret= *pointer+amount;
 629 #ifdef LOCK_DEBUG
 630                 {
 631                 CRYPTO_THREADID id;
 632                 CRYPTO_THREADID_current(&id);
 633                 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
 634                         CRYPTO_THREADID_hash(&id),
 635                         *pointer,amount,ret,
 636                         CRYPTO_get_lock_name(type),
 637                         file,line);
 638                 }
 639 #endif
 640                 *pointer=ret;
 641                 CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE,type,file,line);
 642                 }
 643         return(ret);
 644         }
 645
 646 const char *CRYPTO_get_lock_name(int type)
 647         {
 648         if (type < 0)
 649                 return("dynamic");
 650         else if (type < CRYPTO_NUM_LOCKS)
 651                 return(lock_names[type]);
 652         else if (type-CRYPTO_NUM_LOCKS > sk_STRING_num(app_locks))
 653                 return("ERROR");
 654         else
 655                 return(sk_STRING_value(app_locks,type-CRYPTO_NUM_LOCKS));
 656         }
 657
 658 #if     defined(__i386)   || defined(__i386__)   || defined(_M_IX86) || \
 659         defined(__INTEL__) || \
 660         defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64)
 661
 662 unsigned long  OPENSSL_ia32cap_P=0;
 663 unsigned long *OPENSSL_ia32cap_loc(void) { return &OPENSSL_ia32cap_P; }
 664
 665 #if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM) && !defined(I386_ONLY)
 666 #define OPENSSL_CPUID_SETUP
 667 void OPENSSL_cpuid_setup(void)
 668 { static int trigger=0;
 669   unsigned long OPENSSL_ia32_cpuid(void);
 670   char *env;
 671
 672     if (trigger)        return;
 673
 674     trigger=1;
 675     if ((env=getenv("OPENSSL_ia32cap")))
 676         OPENSSL_ia32cap_P = strtoul(env,NULL,0)|(1<<10);
 677     else
 678         OPENSSL_ia32cap_P = OPENSSL_ia32_cpuid()|(1<<10);
 679     /*
 680      * |(1<<10) sets a reserved bit to signal that variable
 681      * was initialized already... This is to avoid interference
 682      * with cpuid snippets in ELF .init segment.
 683      */
 684 }
 685 #endif
 686
 687 #else
 688 unsigned long *OPENSSL_ia32cap_loc(void) { return NULL; }
 689 #endif
 690 int OPENSSL_NONPIC_relocated = 0;
 691 #if !defined(OPENSSL_CPUID_SETUP) && !defined(OPENSSL_CPUID_OBJ)
 692 void OPENSSL_cpuid_setup(void) {}
 693 #endif
 694
 695 #if (defined(_WIN32) || defined(__CYGWIN__)) && defined(_WINDLL)
 696 #ifdef __CYGWIN__
 697 /* pick DLL_[PROCESS|THREAD]_[ATTACH|DETACH] definitions */
 698 #include <windows.h>
 699 #endif
 700
 701 /* All we really need to do is remove the 'error' state when a thread
 702  * detaches */
 703
 704 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason,
 705              LPVOID lpvReserved)
 706         {
 707         switch(fdwReason)
 708                 {
 709         case DLL_PROCESS_ATTACH:
 710                 OPENSSL_cpuid_setup();
 711 #if defined(_WIN32_WINNT)
 712                 {
 713                 IMAGE_DOS_HEADER *dos_header = (IMAGE_DOS_HEADER *)hinstDLL;
 714                 IMAGE_NT_HEADERS *nt_headers;
 715
 716                 if (dos_header->e_magic==IMAGE_DOS_SIGNATURE)
 717                         {
 718                         nt_headers = (IMAGE_NT_HEADERS *)((char *)dos_header
 719                                                 + dos_header->e_lfanew);
 720                         if (nt_headers->Signature==IMAGE_NT_SIGNATURE &&
 721                             hinstDLL!=(HINSTANCE)(nt_headers->OptionalHeader.ImageBase))
 722                                 OPENSSL_NONPIC_relocated=1;
 723                         }
 724                 }
 725 #endif
 726                 break;
 727         case DLL_THREAD_ATTACH:
 728                 break;
 729         case DLL_THREAD_DETACH:
 730                 ERR_remove_state(0);
 731                 break;
 732         case DLL_PROCESS_DETACH:
 733                 break;
 734                 }
 735         return(TRUE);
 736         }
 737 #endif
 738
 739 #if defined(_WIN32) && !defined(__CYGWIN__)
 740 #include <tchar.h>
 741
 742 #if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
 743 int OPENSSL_isservice(void)
 744 { HWINSTA h;
 745   DWORD len;
 746   WCHAR *name;
 747
 748     (void)GetDesktopWindow(); /* return value is ignored */
 749
 750     h = GetProcessWindowStation();
 751     if (h==NULL) return -1;
 752
 753     if (GetUserObjectInformationW (h,UOI_NAME,NULL,0,&len) ||
 754         GetLastError() != ERROR_INSUFFICIENT_BUFFER)
 755         return -1;
 756
 757     if (len>512) return -1;             /* paranoia */
 758     len++,len&=~1;                      /* paranoia */
 759 #ifdef _MSC_VER
 760     name=(WCHAR *)_alloca(len+sizeof(WCHAR));
 761 #else
 762     name=(WCHAR *)alloca(len+sizeof(WCHAR));
 763 #endif
 764     if (!GetUserObjectInformationW (h,UOI_NAME,name,len,&len))
 765         return -1;
 766
 767     len++,len&=~1;                      /* paranoia */
 768     name[len/sizeof(WCHAR)]=L'\0';      /* paranoia */
 769 #if 1
 770     /* This doesn't cover "interactive" services [working with real
 771      * WinSta0's] nor programs started non-interactively by Task
 772      * Scheduler [those are working with SAWinSta]. */
 773     if (wcsstr(name,L"Service-0x"))     return 1;
 774 #else
 775     /* This covers all non-interactive programs such as services. */
 776     if (!wcsstr(name,L"WinSta0"))       return 1;
 777 #endif
 778     else                                return 0;
 779 }
 780 #else
 781 int OPENSSL_isservice(void) { return 0; }
 782 #endif
 783
 784 void OPENSSL_showfatal (const char *fmta,...)
 785 { va_list ap;
 786   TCHAR buf[256];
 787   const TCHAR *fmt;
 788 #ifdef STD_ERROR_HANDLE /* what a dirty trick! */
 789   HANDLE h;
 790
 791     if ((h=GetStdHandle(STD_ERROR_HANDLE)) != NULL &&
 792         GetFileType(h)!=FILE_TYPE_UNKNOWN)
 793     {   /* must be console application */
 794         va_start (ap,fmta);
 795         vfprintf (stderr,fmta,ap);
 796         va_end (ap);
 797         return;
 798     }
 799 #endif
 800
 801     if (sizeof(TCHAR)==sizeof(char))
 802         fmt=(const TCHAR *)fmta;
 803     else do
 804     { int    keepgoing;
 805       size_t len_0=strlen(fmta)+1,i;
 806       WCHAR *fmtw;
 807
 808 #ifdef _MSC_VER
 809         fmtw = (WCHAR *)_alloca (len_0*sizeof(WCHAR));
 810 #else
 811         fmtw = (WCHAR *)alloca (len_0*sizeof(WCHAR));
 812 #endif
 813         if (fmtw == NULL) { fmt=(const TCHAR *)L"no stack?"; break; }
 814
 815 #ifndef OPENSSL_NO_MULTIBYTE
 816         if (!MultiByteToWideChar(CP_ACP,0,fmta,len_0,fmtw,len_0))
 817 #endif
 818             for (i=0;i<len_0;i++) fmtw[i]=(WCHAR)fmta[i];
 819
 820         for (i=0;i<len_0;i++)
 821         {   if (fmtw[i]==L'%') do
 822             {   keepgoing=0;
 823                 switch (fmtw[i+1])
 824                 {   case L'0': case L'1': case L'2': case L'3': case L'4':
 825                     case L'5': case L'6': case L'7': case L'8': case L'9':
 826                     case L'.': case L'*':
 827                     case L'-':  i++; keepgoing=1; break;
 828                     case L's':  fmtw[i+1]=L'S';   break;
 829                     case L'S':  fmtw[i+1]=L's';   break;
 830                     case L'c':  fmtw[i+1]=L'C';   break;
 831                     case L'C':  fmtw[i+1]=L'c';   break;
 832                 }
 833             } while (keepgoing);
 834         }
 835         fmt = (const TCHAR *)fmtw;
 836     } while (0);
 837
 838     va_start (ap,fmta);
 839     _vsntprintf (buf,sizeof(buf)/sizeof(TCHAR)-1,fmt,ap);
 840     buf [sizeof(buf)/sizeof(TCHAR)-1] = _T('\0');
 841     va_end (ap);
 842
 843 #if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
 844     /* this -------------v--- guards NT-specific calls */
 845     if (GetVersion() < 0x80000000 && OPENSSL_isservice())
 846     {   HANDLE h = RegisterEventSource(0,_T("OPENSSL"));
 847         const TCHAR *pmsg=buf;
 848         ReportEvent(h,EVENTLOG_ERROR_TYPE,0,0,0,1,0,&pmsg,0);
 849         DeregisterEventSource(h);
 850     }
 851     else
 852 #endif
 853         MessageBox (NULL,buf,_T("OpenSSL: FATAL"),MB_OK|MB_ICONSTOP);
 854 }
 855 #else
 856 void OPENSSL_showfatal (const char *fmta,...)
 857 { va_list ap;
 858
 859     va_start (ap,fmta);
 860     vfprintf (stderr,fmta,ap);
 861     va_end (ap);
 862 }
 863 int OPENSSL_isservice (void) { return 0; }
 864 #endif
 865
 866 void OpenSSLDie(const char *file,int line,const char *assertion)
 867         {
 868         OPENSSL_showfatal(
 869                 "%s(%d): OpenSSL internal error, assertion failed: %s\n",
 870                 file,line,assertion);
 871         abort();
 872         }
 873
 874 void *OPENSSL_stderr(void)      { return stderr; }