release/src/router/openssl/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     "<<ERROR>>",
 129     "err",
 130     "ex_data",
 131     "x509",
 132     "x509_info",
 133     "x509_pkey",
 134     "x509_crl",
 135     "x509_req",
 136     "dsa",
 137     "rsa",
 138     "evp_pkey",
 139     "x509_store",
 140     "ssl_ctx",
 141     "ssl_cert",
 142     "ssl_session",
 143     "ssl_sess_cert",
 144     "ssl",
 145     "ssl_method",
 146     "rand",
 147     "rand2",
 148     "debug_malloc",
 149     "BIO",
 150     "gethostbyname",
 151     "getservbyname",
 152     "readdir",
 153     "RSA_blinding",
 154     "dh",
 155     "debug_malloc2",
 156     "dso",
 157     "dynlock",
 158     "engine",
 159     "ui",
 160     "ecdsa",
 161     "ec",
 162     "ecdh",
 163     "bn",
 164     "ec_pre_comp",
 165     "store",
 166     "comp",
 167     "fips",
 168     "fips2",
 169 #if CRYPTO_NUM_LOCKS != 41
 170 # error "Inconsistency between crypto.h and cryptlib.c"
 171 #endif
 172 };
 173
 174 /*
 175  * This is for applications to allocate new type names in the non-dynamic
 176  * array of lock names.  These are numbered with positive numbers.
 177  */
 178 static STACK_OF(OPENSSL_STRING) *app_locks = NULL;
 179
 180 /*
 181  * For applications that want a more dynamic way of handling threads, the
 182  * following stack is used.  These are externally numbered with negative
 183  * numbers.
 184  */
 185 static STACK_OF(CRYPTO_dynlock) *dyn_locks = NULL;
 186
 187 static void (MS_FAR *locking_callback) (int mode, int type,
 188                                         const char *file, int line) = 0;
 189 static int (MS_FAR *add_lock_callback) (int *pointer, int amount,
 190                                         int type, const char *file,
 191                                         int line) = 0;
 192 #ifndef OPENSSL_NO_DEPRECATED
 193 static unsigned long (MS_FAR *id_callback) (void) = 0;
 194 #endif
 195 static void (MS_FAR *threadid_callback) (CRYPTO_THREADID *) = 0;
 196 static struct CRYPTO_dynlock_value *(MS_FAR *dynlock_create_callback)
 197  (const char *file, int line) = 0;
 198 static void (MS_FAR *dynlock_lock_callback) (int mode,
 199                                              struct CRYPTO_dynlock_value *l,
 200                                              const char *file, int line) = 0;
 201 static void (MS_FAR *dynlock_destroy_callback) (struct CRYPTO_dynlock_value
 202                                                 *l, const char *file,
 203                                                 int line) = 0;
 204
 205 int CRYPTO_get_new_lockid(char *name)
 206 {
 207     char *str;
 208     int i;
 209
 210 #if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_WIN16)
 211     /*
 212      * A hack to make Visual C++ 5.0 work correctly when linking as a DLL
 213      * using /MT. Without this, the application cannot use any floating point
 214      * printf's. It also seems to be needed for Visual C 1.5 (win16)
 215      */
 216     SSLeay_MSVC5_hack = (double)name[0] * (double)name[1];
 217 #endif
 218
 219     if ((app_locks == NULL)
 220         && ((app_locks = sk_OPENSSL_STRING_new_null()) == NULL)) {
 221         CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID, ERR_R_MALLOC_FAILURE);
 222         return (0);
 223     }
 224     if ((str = BUF_strdup(name)) == NULL) {
 225         CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID, ERR_R_MALLOC_FAILURE);
 226         return (0);
 227     }
 228     i = sk_OPENSSL_STRING_push(app_locks, str);
 229     if (!i)
 230         OPENSSL_free(str);
 231     else
 232         i += CRYPTO_NUM_LOCKS;  /* gap of one :-) */
 233     return (i);
 234 }
 235
 236 int CRYPTO_num_locks(void)
 237 {
 238     return CRYPTO_NUM_LOCKS;
 239 }
 240
 241 int CRYPTO_get_new_dynlockid(void)
 242 {
 243     int i = 0;
 244     CRYPTO_dynlock *pointer = NULL;
 245
 246     if (dynlock_create_callback == NULL) {
 247         CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID,
 248                   CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK);
 249         return (0);
 250     }
 251     CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
 252     if ((dyn_locks == NULL)
 253         && ((dyn_locks = sk_CRYPTO_dynlock_new_null()) == NULL)) {
 254         CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
 255         CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID, ERR_R_MALLOC_FAILURE);
 256         return (0);
 257     }
 258     CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
 259
 260     pointer = (CRYPTO_dynlock *) OPENSSL_malloc(sizeof(CRYPTO_dynlock));
 261     if (pointer == NULL) {
 262         CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID, ERR_R_MALLOC_FAILURE);
 263         return (0);
 264     }
 265     pointer->references = 1;
 266     pointer->data = dynlock_create_callback(__FILE__, __LINE__);
 267     if (pointer->data == NULL) {
 268         OPENSSL_free(pointer);
 269         CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID, ERR_R_MALLOC_FAILURE);
 270         return (0);
 271     }
 272
 273     CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
 274     /* First, try to find an existing empty slot */
 275     i = sk_CRYPTO_dynlock_find(dyn_locks, NULL);
 276     /* If there was none, push, thereby creating a new one */
 277     if (i == -1)
 278         /*
 279          * Since sk_push() returns the number of items on the stack, not the
 280          * location of the pushed item, we need to transform the returned
 281          * number into a position, by decreasing it.
 282          */
 283         i = sk_CRYPTO_dynlock_push(dyn_locks, pointer) - 1;
 284     else
 285         /*
 286          * If we found a place with a NULL pointer, put our pointer in it.
 287          */
 288         (void)sk_CRYPTO_dynlock_set(dyn_locks, i, pointer);
 289     CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
 290
 291     if (i == -1) {
 292         dynlock_destroy_callback(pointer->data, __FILE__, __LINE__);
 293         OPENSSL_free(pointer);
 294     } else
 295         i += 1;                 /* to avoid 0 */
 296     return -i;
 297 }
 298
 299 void CRYPTO_destroy_dynlockid(int i)
 300 {
 301     CRYPTO_dynlock *pointer = NULL;
 302     if (i)
 303         i = -i - 1;
 304     if (dynlock_destroy_callback == NULL)
 305         return;
 306
 307     CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
 308
 309     if (dyn_locks == NULL || i >= sk_CRYPTO_dynlock_num(dyn_locks)) {
 310         CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
 311         return;
 312     }
 313     pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
 314     if (pointer != NULL) {
 315         --pointer->references;
 316 #ifdef REF_CHECK
 317         if (pointer->references < 0) {
 318             fprintf(stderr,
 319                     "CRYPTO_destroy_dynlockid, bad reference count\n");
 320             abort();
 321         } else
 322 #endif
 323         if (pointer->references <= 0) {
 324             (void)sk_CRYPTO_dynlock_set(dyn_locks, i, NULL);
 325         } else
 326             pointer = NULL;
 327     }
 328     CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
 329
 330     if (pointer) {
 331         dynlock_destroy_callback(pointer->data, __FILE__, __LINE__);
 332         OPENSSL_free(pointer);
 333     }
 334 }
 335
 336 struct CRYPTO_dynlock_value *CRYPTO_get_dynlock_value(int i)
 337 {
 338     CRYPTO_dynlock *pointer = NULL;
 339     if (i)
 340         i = -i - 1;
 341
 342     CRYPTO_w_lock(CRYPTO_LOCK_DYNLOCK);
 343
 344     if (dyn_locks != NULL && i < sk_CRYPTO_dynlock_num(dyn_locks))
 345         pointer = sk_CRYPTO_dynlock_value(dyn_locks, i);
 346     if (pointer)
 347         pointer->references++;
 348
 349     CRYPTO_w_unlock(CRYPTO_LOCK_DYNLOCK);
 350
 351     if (pointer)
 352         return pointer->data;
 353     return NULL;
 354 }
 355
 356 struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void))
 357  (const char *file, int line) {
 358     return (dynlock_create_callback);
 359 }
 360
 361 void (*CRYPTO_get_dynlock_lock_callback(void)) (int mode,
 362                                                 struct CRYPTO_dynlock_value
 363                                                 *l, const char *file,
 364                                                 int line) {
 365     return (dynlock_lock_callback);
 366 }
 367
 368 void (*CRYPTO_get_dynlock_destroy_callback(void))
 369  (struct CRYPTO_dynlock_value *l, const char *file, int line) {
 370     return (dynlock_destroy_callback);
 371 }
 372
 373 void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(*func)
 374                                          (const char *file, int line))
 375 {
 376     dynlock_create_callback = func;
 377 }
 378
 379 void CRYPTO_set_dynlock_lock_callback(void (*func) (int mode,
 380                                                     struct
 381                                                     CRYPTO_dynlock_value *l,
 382                                                     const char *file,
 383                                                     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,
 390                                            const char *file, int line))
 391 {
 392     dynlock_destroy_callback = func;
 393 }
 394
 395 void (*CRYPTO_get_locking_callback(void)) (int mode, int type,
 396                                            const char *file, int line) {
 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     return (add_lock_callback);
 403 }
 404
 405 void CRYPTO_set_locking_callback(void (*func) (int mode, int type,
 406                                                const char *file, int line))
 407 {
 408     /*
 409      * Calling this here ensures initialisation before any threads are
 410      * started.
 411      */
 412     OPENSSL_init();
 413     locking_callback = func;
 414 }
 415
 416 void CRYPTO_set_add_lock_callback(int (*func) (int *num, int mount, int type,
 417                                                const char *file, int line))
 418 {
 419     add_lock_callback = func;
 420 }
 421
 422 /*
 423  * the memset() here and in set_pointer() seem overkill, but for the sake of
 424  * CRYPTO_THREADID_cmp() this avoids any platform silliness that might cause
 425  * two "equal" THREADID structs to not be memcmp()-identical.
 426  */
 427 void CRYPTO_THREADID_set_numeric(CRYPTO_THREADID *id, unsigned long val)
 428 {
 429     memset(id, 0, sizeof(*id));
 430     id->val = val;
 431 }
 432
 433 static const unsigned char hash_coeffs[] = { 3, 5, 7, 11, 13, 17, 19, 23 };
 434
 435 void CRYPTO_THREADID_set_pointer(CRYPTO_THREADID *id, void *ptr)
 436 {
 437     unsigned char *dest = (void *)&id->val;
 438     unsigned int accum = 0;
 439     unsigned char dnum = sizeof(id->val);
 440
 441     memset(id, 0, sizeof(*id));
 442     id->ptr = ptr;
 443     if (sizeof(id->val) >= sizeof(id->ptr)) {
 444         /*
 445          * 'ptr' can be embedded in 'val' without loss of uniqueness
 446          */
 447         id->val = (unsigned long)id->ptr;
 448         return;
 449     }
 450     /*
 451      * hash ptr ==> val. Each byte of 'val' gets the mod-256 total of a
 452      * linear function over the bytes in 'ptr', the co-efficients of which
 453      * are a sequence of low-primes (hash_coeffs is an 8-element cycle) - the
 454      * starting prime for the sequence varies for each byte of 'val' (unique
 455      * polynomials unless pointers are >64-bit). For added spice, the totals
 456      * accumulate rather than restarting from zero, and the index of the
 457      * 'val' byte is added each time (position dependence). If I was a
 458      * black-belt, I'd scan big-endian pointers in reverse to give low-order
 459      * bits more play, but this isn't crypto and I'd prefer nobody mistake it
 460      * as such. Plus I'm lazy.
 461      */
 462     while (dnum--) {
 463         const unsigned char *src = (void *)&id->ptr;
 464         unsigned char snum = sizeof(id->ptr);
 465         while (snum--)
 466             accum += *(src++) * hash_coeffs[(snum + dnum) & 7];
 467         accum += dnum;
 468         *(dest++) = accum & 255;
 469     }
 470 }
 471
 472 int CRYPTO_THREADID_set_callback(void (*func) (CRYPTO_THREADID *))
 473 {
 474     if (threadid_callback)
 475         return 0;
 476     threadid_callback = func;
 477     return 1;
 478 }
 479
 480 void (*CRYPTO_THREADID_get_callback(void)) (CRYPTO_THREADID *) {
 481     return threadid_callback;
 482 }
 483
 484 void CRYPTO_THREADID_current(CRYPTO_THREADID *id)
 485 {
 486     if (threadid_callback) {
 487         threadid_callback(id);
 488         return;
 489     }
 490 #ifndef OPENSSL_NO_DEPRECATED
 491     /* If the deprecated callback was set, fall back to that */
 492     if (id_callback) {
 493         CRYPTO_THREADID_set_numeric(id, id_callback());
 494         return;
 495     }
 496 #endif
 497     /* Else pick a backup */
 498 #ifdef OPENSSL_SYS_WIN16
 499     CRYPTO_THREADID_set_numeric(id, (unsigned long)GetCurrentTask());
 500 #elif defined(OPENSSL_SYS_WIN32)
 501     CRYPTO_THREADID_set_numeric(id, (unsigned long)GetCurrentThreadId());
 502 #elif defined(OPENSSL_SYS_BEOS)
 503     CRYPTO_THREADID_set_numeric(id, (unsigned long)find_thread(NULL));
 504 #else
 505     /* For everything else, default to using the address of 'errno' */
 506     CRYPTO_THREADID_set_pointer(id, (void *)&errno);
 507 #endif
 508 }
 509
 510 int CRYPTO_THREADID_cmp(const CRYPTO_THREADID *a, const CRYPTO_THREADID *b)
 511 {
 512     return memcmp(a, b, sizeof(*a));
 513 }
 514
 515 void CRYPTO_THREADID_cpy(CRYPTO_THREADID *dest, const CRYPTO_THREADID *src)
 516 {
 517     memcpy(dest, src, sizeof(*src));
 518 }
 519
 520 unsigned long CRYPTO_THREADID_hash(const CRYPTO_THREADID *id)
 521 {
 522     return id->val;
 523 }
 524
 525 #ifndef OPENSSL_NO_DEPRECATED
 526 unsigned long (*CRYPTO_get_id_callback(void)) (void) {
 527     return (id_callback);
 528 }
 529
 530 void CRYPTO_set_id_callback(unsigned long (*func) (void))
 531 {
 532     id_callback = func;
 533 }
 534
 535 unsigned long CRYPTO_thread_id(void)
 536 {
 537     unsigned long ret = 0;
 538
 539     if (id_callback == NULL) {
 540 # ifdef OPENSSL_SYS_WIN16
 541         ret = (unsigned long)GetCurrentTask();
 542 # elif defined(OPENSSL_SYS_WIN32)
 543         ret = (unsigned long)GetCurrentThreadId();
 544 # elif defined(GETPID_IS_MEANINGLESS)
 545         ret = 1L;
 546 # elif defined(OPENSSL_SYS_BEOS)
 547         ret = (unsigned long)find_thread(NULL);
 548 # else
 549         ret = (unsigned long)getpid();
 550 # endif
 551     } else
 552         ret = id_callback();
 553     return (ret);
 554 }
 555 #endif
 556
 557 void CRYPTO_lock(int mode, int type, const char *file, int line)
 558 {
 559 #ifdef LOCK_DEBUG
 560     {
 561         CRYPTO_THREADID id;
 562         char *rw_text, *operation_text;
 563
 564         if (mode & CRYPTO_LOCK)
 565             operation_text = "lock  ";
 566         else if (mode & CRYPTO_UNLOCK)
 567             operation_text = "unlock";
 568         else
 569             operation_text = "ERROR ";
 570
 571         if (mode & CRYPTO_READ)
 572             rw_text = "r";
 573         else if (mode & CRYPTO_WRITE)
 574             rw_text = "w";
 575         else
 576             rw_text = "ERROR";
 577
 578         CRYPTO_THREADID_current(&id);
 579         fprintf(stderr, "lock:%08lx:(%s)%s %-18s %s:%d\n",
 580                 CRYPTO_THREADID_hash(&id), rw_text, operation_text,
 581                 CRYPTO_get_lock_name(type), file, line);
 582     }
 583 #endif
 584     if (type < 0) {
 585         if (dynlock_lock_callback != NULL) {
 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     } else if (locking_callback != NULL)
 596         locking_callback(mode, type, file, line);
 597 }
 598
 599 int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
 600                     int line)
 601 {
 602     int ret = 0;
 603
 604     if (add_lock_callback != NULL) {
 605 #ifdef LOCK_DEBUG
 606         int before = *pointer;
 607 #endif
 608
 609         ret = add_lock_callback(pointer, amount, type, file, line);
 610 #ifdef LOCK_DEBUG
 611         {
 612             CRYPTO_THREADID id;
 613             CRYPTO_THREADID_current(&id);
 614             fprintf(stderr, "ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
 615                     CRYPTO_THREADID_hash(&id), before, amount, ret,
 616                     CRYPTO_get_lock_name(type), file, line);
 617         }
 618 #endif
 619     } else {
 620         CRYPTO_lock(CRYPTO_LOCK | CRYPTO_WRITE, type, file, line);
 621
 622         ret = *pointer + amount;
 623 #ifdef LOCK_DEBUG
 624         {
 625             CRYPTO_THREADID id;
 626             CRYPTO_THREADID_current(&id);
 627             fprintf(stderr, "ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
 628                     CRYPTO_THREADID_hash(&id),
 629                     *pointer, amount, ret,
 630                     CRYPTO_get_lock_name(type), file, line);
 631         }
 632 #endif
 633         *pointer = ret;
 634         CRYPTO_lock(CRYPTO_UNLOCK | CRYPTO_WRITE, type, file, line);
 635     }
 636     return (ret);
 637 }
 638
 639 const char *CRYPTO_get_lock_name(int type)
 640 {
 641     if (type < 0)
 642         return ("dynamic");
 643     else if (type < CRYPTO_NUM_LOCKS)
 644         return (lock_names[type]);
 645     else if (type - CRYPTO_NUM_LOCKS > sk_OPENSSL_STRING_num(app_locks))
 646         return ("ERROR");
 647     else
 648         return (sk_OPENSSL_STRING_value(app_locks, type - CRYPTO_NUM_LOCKS));
 649 }
 650
 651 #if     defined(__i386)   || defined(__i386__)   || defined(_M_IX86) || \
 652         defined(__INTEL__) || \
 653         defined(__x86_64) || defined(__x86_64__) || \
 654         defined(_M_AMD64) || defined(_M_X64)
 655
 656 unsigned int OPENSSL_ia32cap_P[2];
 657 unsigned long *OPENSSL_ia32cap_loc(void)
 658 {
 659     if (sizeof(long) == 4)
 660         /*
 661          * If 32-bit application pulls address of OPENSSL_ia32cap_P[0]
 662          * clear second element to maintain the illusion that vector
 663          * is 32-bit.
 664          */
 665         OPENSSL_ia32cap_P[1] = 0;
 666     return (unsigned long *)OPENSSL_ia32cap_P;
 667 }
 668
 669 # if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM) && !defined(I386_ONLY)
 670 #  define OPENSSL_CPUID_SETUP
 671 #  if defined(_WIN32)
 672 typedef unsigned __int64 IA32CAP;
 673 #  else
 674 typedef unsigned long long IA32CAP;
 675 #  endif
 676 void OPENSSL_cpuid_setup(void)
 677 {
 678     static int trigger = 0;
 679     IA32CAP OPENSSL_ia32_cpuid(void);
 680     IA32CAP vec;
 681     char *env;
 682
 683     if (trigger)
 684         return;
 685
 686     trigger = 1;
 687     if ((env = getenv("OPENSSL_ia32cap"))) {
 688         int off = (env[0] == '~') ? 1 : 0;
 689 #  if defined(_WIN32)
 690         if (!sscanf(env + off, "%I64i", &vec))
 691             vec = strtoul(env + off, NULL, 0);
 692 #  else
 693         if (!sscanf(env + off, "%lli", (long long *)&vec))
 694             vec = strtoul(env + off, NULL, 0);
 695 #  endif
 696         if (off)
 697             vec = OPENSSL_ia32_cpuid() & ~vec;
 698     } else
 699         vec = OPENSSL_ia32_cpuid();
 700
 701     /*
 702      * |(1<<10) sets a reserved bit to signal that variable
 703      * was initialized already... This is to avoid interference
 704      * with cpuid snippets in ELF .init segment.
 705      */
 706     OPENSSL_ia32cap_P[0] = (unsigned int)vec | (1 << 10);
 707     OPENSSL_ia32cap_P[1] = (unsigned int)(vec >> 32);
 708 }
 709 # endif
 710
 711 #else
 712 unsigned long *OPENSSL_ia32cap_loc(void)
 713 {
 714     return NULL;
 715 }
 716 #endif
 717 int OPENSSL_NONPIC_relocated = 0;
 718 #if !defined(OPENSSL_CPUID_SETUP) && !defined(OPENSSL_CPUID_OBJ)
 719 void OPENSSL_cpuid_setup(void)
 720 {
 721 }
 722 #endif
 723
 724 #if (defined(_WIN32) || defined(__CYGWIN__)) && defined(_WINDLL)
 725 # ifdef __CYGWIN__
 726 /* pick DLL_[PROCESS|THREAD]_[ATTACH|DETACH] definitions */
 727 #  include <windows.h>
 728 /*
 729  * this has side-effect of _WIN32 getting defined, which otherwise is
 730  * mutually exclusive with __CYGWIN__...
 731  */
 732 # endif
 733
 734 /*
 735  * All we really need to do is remove the 'error' state when a thread
 736  * detaches
 737  */
 738
 739 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
 740 {
 741     switch (fdwReason) {
 742     case DLL_PROCESS_ATTACH:
 743         OPENSSL_cpuid_setup();
 744 # if defined(_WIN32_WINNT)
 745         {
 746             IMAGE_DOS_HEADER *dos_header = (IMAGE_DOS_HEADER *) hinstDLL;
 747             IMAGE_NT_HEADERS *nt_headers;
 748
 749             if (dos_header->e_magic == IMAGE_DOS_SIGNATURE) {
 750                 nt_headers = (IMAGE_NT_HEADERS *) ((char *)dos_header
 751                                                    + dos_header->e_lfanew);
 752                 if (nt_headers->Signature == IMAGE_NT_SIGNATURE &&
 753                     hinstDLL !=
 754                     (HINSTANCE) (nt_headers->OptionalHeader.ImageBase))
 755                     OPENSSL_NONPIC_relocated = 1;
 756             }
 757         }
 758 # endif
 759         break;
 760     case DLL_THREAD_ATTACH:
 761         break;
 762     case DLL_THREAD_DETACH:
 763         break;
 764     case DLL_PROCESS_DETACH:
 765         break;
 766     }
 767     return (TRUE);
 768 }
 769 #endif
 770
 771 #if defined(_WIN32) && !defined(__CYGWIN__)
 772 # include <tchar.h>
 773 # include <signal.h>
 774 # ifdef __WATCOMC__
 775 #  if defined(_UNICODE) || defined(__UNICODE__)
 776 #   define _vsntprintf _vsnwprintf
 777 #  else
 778 #   define _vsntprintf _vsnprintf
 779 #  endif
 780 # endif
 781 # ifdef _MSC_VER
 782 #  define alloca _alloca
 783 # endif
 784
 785 # if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
 786 int OPENSSL_isservice(void)
 787 {
 788     HWINSTA h;
 789     DWORD len;
 790     WCHAR *name;
 791     static union {
 792         void *p;
 793         int (*f) (void);
 794     } _OPENSSL_isservice = {
 795         NULL
 796     };
 797
 798     if (_OPENSSL_isservice.p == NULL) {
 799         HANDLE h = GetModuleHandle(NULL);
 800         if (h != NULL)
 801             _OPENSSL_isservice.p = GetProcAddress(h, "_OPENSSL_isservice");
 802         if (_OPENSSL_isservice.p == NULL)
 803             _OPENSSL_isservice.p = (void *)-1;
 804     }
 805
 806     if (_OPENSSL_isservice.p != (void *)-1)
 807         return (*_OPENSSL_isservice.f) ();
 808
 809     (void)GetDesktopWindow();   /* return value is ignored */
 810
 811     h = GetProcessWindowStation();
 812     if (h == NULL)
 813         return -1;
 814
 815     if (GetUserObjectInformationW(h, UOI_NAME, NULL, 0, &len) ||
 816         GetLastError() != ERROR_INSUFFICIENT_BUFFER)
 817         return -1;
 818
 819     if (len > 512)
 820         return -1;              /* paranoia */
 821     len++, len &= ~1;           /* paranoia */
 822     name = (WCHAR *)alloca(len + sizeof(WCHAR));
 823     if (!GetUserObjectInformationW(h, UOI_NAME, name, len, &len))
 824         return -1;
 825
 826     len++, len &= ~1;           /* paranoia */
 827     name[len / sizeof(WCHAR)] = L'\0'; /* paranoia */
 828 #  if 1
 829     /*
 830      * This doesn't cover "interactive" services [working with real
 831      * WinSta0's] nor programs started non-interactively by Task Scheduler
 832      * [those are working with SAWinSta].
 833      */
 834     if (wcsstr(name, L"Service-0x"))
 835         return 1;
 836 #  else
 837     /* This covers all non-interactive programs such as services. */
 838     if (!wcsstr(name, L"WinSta0"))
 839         return 1;
 840 #  endif
 841     else
 842         return 0;
 843 }
 844 # else
 845 int OPENSSL_isservice(void)
 846 {
 847     return 0;
 848 }
 849 # endif
 850
 851 void OPENSSL_showfatal(const char *fmta, ...)
 852 {
 853     va_list ap;
 854     TCHAR buf[256];
 855     const TCHAR *fmt;
 856 # ifdef STD_ERROR_HANDLE        /* what a dirty trick! */
 857     HANDLE h;
 858
 859     if ((h = GetStdHandle(STD_ERROR_HANDLE)) != NULL &&
 860         GetFileType(h) != FILE_TYPE_UNKNOWN) {
 861         /* must be console application */
 862         va_start(ap, fmta);
 863         vfprintf(stderr, fmta, ap);
 864         va_end(ap);
 865         return;
 866     }
 867 # endif
 868
 869     if (sizeof(TCHAR) == sizeof(char))
 870         fmt = (const TCHAR *)fmta;
 871     else
 872         do {
 873             int keepgoing;
 874             size_t len_0 = strlen(fmta) + 1, i;
 875             WCHAR *fmtw;
 876
 877             fmtw = (WCHAR *)alloca(len_0 * sizeof(WCHAR));
 878             if (fmtw == NULL) {
 879                 fmt = (const TCHAR *)L"no stack?";
 880                 break;
 881             }
 882 # ifndef OPENSSL_NO_MULTIBYTE
 883             if (!MultiByteToWideChar(CP_ACP, 0, fmta, len_0, fmtw, len_0))
 884 # endif
 885                 for (i = 0; i < len_0; i++)
 886                     fmtw[i] = (WCHAR)fmta[i];
 887
 888             for (i = 0; i < len_0; i++) {
 889                 if (fmtw[i] == L'%')
 890                     do {
 891                         keepgoing = 0;
 892                         switch (fmtw[i + 1]) {
 893                         case L'0':
 894                         case L'1':
 895                         case L'2':
 896                         case L'3':
 897                         case L'4':
 898                         case L'5':
 899                         case L'6':
 900                         case L'7':
 901                         case L'8':
 902                         case L'9':
 903                         case L'.':
 904                         case L'*':
 905                         case L'-':
 906                             i++;
 907                             keepgoing = 1;
 908                             break;
 909                         case L's':
 910                             fmtw[i + 1] = L'S';
 911                             break;
 912                         case L'S':
 913                             fmtw[i + 1] = L's';
 914                             break;
 915                         case L'c':
 916                             fmtw[i + 1] = L'C';
 917                             break;
 918                         case L'C':
 919                             fmtw[i + 1] = L'c';
 920                             break;
 921                         }
 922                     } while (keepgoing);
 923             }
 924             fmt = (const TCHAR *)fmtw;
 925         } while (0);
 926
 927     va_start(ap, fmta);
 928     _vsntprintf(buf, sizeof(buf) / sizeof(TCHAR) - 1, fmt, ap);
 929     buf[sizeof(buf) / sizeof(TCHAR) - 1] = _T('\0');
 930     va_end(ap);
 931
 932 # if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
 933     /* this -------------v--- guards NT-specific calls */
 934     if (check_winnt() && OPENSSL_isservice() > 0) {
 935         HANDLE h = RegisterEventSource(0, _T("OPENSSL"));
 936         const TCHAR *pmsg = buf;
 937         ReportEvent(h, EVENTLOG_ERROR_TYPE, 0, 0, 0, 1, 0, &pmsg, 0);
 938         DeregisterEventSource(h);
 939     } else
 940 # endif
 941         MessageBox(NULL, buf, _T("OpenSSL: FATAL"), MB_OK | MB_ICONSTOP);
 942 }
 943 #else
 944 void OPENSSL_showfatal(const char *fmta, ...)
 945 {
 946     va_list ap;
 947
 948     va_start(ap, fmta);
 949     vfprintf(stderr, fmta, ap);
 950     va_end(ap);
 951 }
 952
 953 int OPENSSL_isservice(void)
 954 {
 955     return 0;
 956 }
 957 #endif
 958
 959 void OpenSSLDie(const char *file, int line, const char *assertion)
 960 {
 961     OPENSSL_showfatal
 962         ("%s(%d): OpenSSL internal error, assertion failed: %s\n", file, line,
 963          assertion);
 964 #if !defined(_WIN32) || defined(__CYGWIN__)
 965     abort();
 966 #else
 967     /*
 968      * Win32 abort() customarily shows a dialog, but we just did that...
 969      */
 970     raise(SIGABRT);
 971     _exit(3);
 972 #endif
 973 }
 974
 975 void *OPENSSL_stderr(void)
 976 {
 977     return stderr;
 978 }
 979
 980 int CRYPTO_memcmp(const void *in_a, const void *in_b, size_t len)
 981 {
 982     size_t i;
 983     const unsigned char *a = in_a;
 984     const unsigned char *b = in_b;
 985     unsigned char x = 0;
 986
 987     for (i = 0; i < len; i++)
 988         x |= a[i] ^ b[i];
 989
 990     return x;
 991 }