OSX/libsecurity_apple_csp/open_ssl/cryptlib.c

   1 /*
   2  * Copyright (c) 2000-2001,2011,2014 Apple Inc. All Rights Reserved.
   3  *
   4  * The contents of this file constitute Original Code as defined in and are
   5  * subject to the Apple Public Source License Version 1.2 (the 'License').
   6  * You may not use this file except in compliance with the License. Please obtain
   7  * a copy of the License at http://www.apple.com/publicsource and read it before
   8  * using this file.
   9  *
  10  * This Original Code and all software distributed under the License are
  11  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
  12  * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
  13  * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  14  * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
  15  * specific language governing rights and limitations under the License.
  16  */
  17
  18
  19 /* crypto/cryptlib.c */
  20 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  21  * All rights reserved.
  22  *
  23  * This package is an SSL implementation written
  24  * by Eric Young (eay@cryptsoft.com).
  25  * The implementation was written so as to conform with Netscapes SSL.
  26  *
  27  * This library is free for commercial and non-commercial use as long as
  28  * the following conditions are aheared to.  The following conditions
  29  * apply to all code found in this distribution, be it the RC4, RSA,
  30  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  31  * included with this distribution is covered by the same copyright terms
  32  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  33  *
  34  * Copyright remains Eric Young's, and as such any Copyright notices in
  35  * the code are not to be removed.
  36  * If this package is used in a product, Eric Young should be given attribution
  37  * as the author of the parts of the library used.
  38  * This can be in the form of a textual message at program startup or
  39  * in documentation (online or textual) provided with the package.
  40  *
  41  * Redistribution and use in source and binary forms, with or without
  42  * modification, are permitted provided that the following conditions
  43  * are met:
  44  * 1. Redistributions of source code must retain the copyright
  45  *    notice, this list of conditions and the following disclaimer.
  46  * 2. Redistributions in binary form must reproduce the above copyright
  47  *    notice, this list of conditions and the following disclaimer in the
  48  *    documentation and/or other materials provided with the distribution.
  49  * 3. All advertising materials mentioning features or use of this software
  50  *    must display the following acknowledgement:
  51  *    "This product includes cryptographic software written by
  52  *     Eric Young (eay@cryptsoft.com)"
  53  *    The word 'cryptographic' can be left out if the rouines from the library
  54  *    being used are not cryptographic related :-).
  55  * 4. If you include any Windows specific code (or a derivative thereof) from
  56  *    the apps directory (application code) you must include an acknowledgement:
  57  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  58  *
  59  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  60  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  61  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  62  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  63  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  64  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  65  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  66  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  67  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  68  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  69  * SUCH DAMAGE.
  70  *
  71  * The licence and distribution terms for any publically available version or
  72  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  73  * copied and put under another distribution licence
  74  * [including the GNU Public Licence.]
  75  */
  76
  77 #include <stdio.h>
  78 #include <string.h>
  79 #include "cryptlib.h"
  80 #include <openssl/crypto.h>
  81
  82 #if defined(WIN32) || defined(WIN16)
  83 static double SSLeay_MSVC5_hack=0.0; /* and for VC1.5 */
  84 #endif
  85
  86 /* real #defines in crypto.h, keep these upto date */
  87 #if defined(LOCK_DEBUG)
  88 static const char* const lock_names[CRYPTO_NUM_LOCKS] =
  89         {
  90         "<<ERROR>>",
  91         "err",
  92         "err_hash",
  93         "x509",
  94         "x509_info",
  95         "x509_pkey",
  96         "x509_crl",
  97         "x509_req",
  98         "dsa",
  99         "rsa",
 100         "evp_pkey",
 101         "x509_store",
 102         "ssl_ctx",
 103         "ssl_cert",
 104         "ssl_session",
 105         "ssl_sess_cert",
 106         "ssl",
 107         "rand",
 108         "debug_malloc",
 109         "BIO",
 110         "gethostbyname",
 111         "getservbyname",
 112         "readdir",
 113         "RSA_blinding",
 114         "dh",
 115         "debug_malloc2",
 116 #if CRYPTO_NUM_LOCKS != 26
 117 # error "Inconsistency between crypto.h and cryptlib.c"
 118 #endif
 119         };
 120 #endif /*LOCK_DEBUG*/
 121
 122 static STACK *app_locks=NULL;
 123
 124 #if             CRYPTO_CALLBACK_ENABLE
 125 static void (MS_FAR *locking_callback)(int mode,int type,
 126         const char *file,int line)=NULL;
 127 static int (MS_FAR *add_lock_callback)(int *pointer,int amount,
 128         int type,const char *file,int line)=NULL;
 129 static unsigned long (MS_FAR *id_callback)(void)=NULL;
 130 #endif  /* CRYPTO_CALLBACK_ENABLE */
 131
 132 int CRYPTO_get_new_lockid(char *name)
 133         {
 134         char *str;
 135         int i;
 136
 137         /* A hack to make Visual C++ 5.0 work correctly when linking as
 138          * a DLL using /MT. Without this, the application cannot use
 139          * and floating point printf's.
 140          * It also seems to be needed for Visual C 1.5 (win16) */
 141 #if defined(WIN32) || defined(WIN16)
 142         SSLeay_MSVC5_hack=(double)name[0]*(double)name[1];
 143 #endif
 144
 145         if ((app_locks == NULL) && ((app_locks=sk_new_null()) == NULL))
 146                 {
 147                 CRYPTOerr(CRYPTO_F_CRYPTO_GET_NEW_LOCKID,ERR_R_MALLOC_FAILURE);
 148                 return(0);
 149                 }
 150         if ((str=BUF_strdup(name)) == NULL)
 151                 return(0);
 152         i=sk_push(app_locks,str);
 153         if (!i)
 154                 Free(str);
 155         else
 156                 i+=CRYPTO_NUM_LOCKS; /* gap of one :-) */
 157         return(i);
 158         }
 159
 160 int CRYPTO_num_locks(void)
 161         {
 162         return CRYPTO_NUM_LOCKS;
 163         }
 164
 165 void (*CRYPTO_get_locking_callback(void))(int mode,int type,const char *file,
 166                 int line)
 167         {
 168         #if     CRYPTO_CALLBACK_ENABLE
 169         return(locking_callback);
 170         #else
 171         return NULL;
 172         #endif
 173         }
 174
 175 int (*CRYPTO_get_add_lock_callback(void))(int *num,int mount,int type,
 176                                           const char *file,int line)
 177         {
 178         #if     CRYPTO_CALLBACK_ENABLE
 179         return(add_lock_callback);
 180         #else
 181         return NULL;
 182         #endif
 183         }
 184
 185 void CRYPTO_set_locking_callback(void (*func)(int mode,int type,
 186                                               const char *file,int line))
 187         {
 188         #if     CRYPTO_CALLBACK_ENABLE
 189         locking_callback=func;
 190         #endif
 191         }
 192
 193 void CRYPTO_set_add_lock_callback(int (*func)(int *num,int mount,int type,
 194                                               const char *file,int line))
 195         {
 196         #if     CRYPTO_CALLBACK_ENABLE
 197         add_lock_callback=func;
 198         #endif
 199         }
 200
 201 unsigned long (*CRYPTO_get_id_callback(void))(void)
 202         {
 203         #if     CRYPTO_CALLBACK_ENABLE
 204         return(id_callback);
 205         #else
 206         return NULL;
 207         #endif
 208         }
 209
 210 void CRYPTO_set_id_callback(unsigned long (*func)(void))
 211         {
 212         #if     CRYPTO_CALLBACK_ENABLE
 213         id_callback=func;
 214         #endif
 215         }
 216
 217 unsigned long CRYPTO_thread_id(void)
 218         {
 219         unsigned long ret=0;
 220
 221 #if     CRYPTO_CALLBACK_ENABLE
 222         if (id_callback == NULL)
 223                 {
 224 #ifdef WIN16
 225                 ret=(unsigned long)GetCurrentTask();
 226 #elif defined(WIN32)
 227                 ret=(unsigned long)GetCurrentThreadId();
 228 #elif defined(GETPID_IS_MEANINGLESS)
 229                 ret=1L;
 230 #else
 231                 ret=(unsigned long)getpid();
 232 #endif
 233                 }
 234         else
 235                 ret=id_callback();
 236 #endif  /* CRYPTO_CALLBACK_ENABLE */
 237         return(ret);
 238         }
 239
 240 void CRYPTO_lock(int mode, int type, const char *file, int line)
 241         {
 242 #ifdef LOCK_DEBUG
 243                 {
 244                 char *rw_text,*operation_text;
 245
 246                 if (mode & CRYPTO_LOCK)
 247                         operation_text="lock  ";
 248                 else if (mode & CRYPTO_UNLOCK)
 249                         operation_text="unlock";
 250                 else
 251                         operation_text="ERROR ";
 252
 253                 if (mode & CRYPTO_READ)
 254                         rw_text="r";
 255                 else if (mode & CRYPTO_WRITE)
 256                         rw_text="w";
 257                 else
 258                         rw_text="ERROR";
 259
 260                 fprintf(stderr,"lock:%08lx:(%s)%s %-18s %s:%d\n",
 261                         CRYPTO_thread_id(), rw_text, operation_text,
 262                         CRYPTO_get_lock_name(type), file, line);
 263                 }
 264 #endif
 265 #if     CRYPTO_CALLBACK_ENABLE
 266         if (locking_callback != NULL)
 267                 locking_callback(mode,type,file,line);
 268 #endif
 269         }
 270
 271 int CRYPTO_add_lock(int *pointer, int amount, int type, const char *file,
 272              int line)
 273         {
 274         int ret;
 275 #if     CRYPTO_CALLBACK_ENABLE
 276         if (add_lock_callback != NULL)
 277                 {
 278 #ifdef LOCK_DEBUG
 279                 int before= *pointer;
 280 #endif
 281
 282                 ret=add_lock_callback(pointer,amount,type,file,line);
 283 #ifdef LOCK_DEBUG
 284                 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
 285                         CRYPTO_thread_id(),
 286                         before,amount,ret,
 287                         CRYPTO_get_lock_name(type),
 288                         file,line);
 289 #endif
 290                 *pointer=ret;
 291                 }
 292         else
 293 #endif  /* CRYPTO_CALLBACK_ENABLE */
 294                 {
 295                 CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE,type,file,line);
 296
 297                 ret= *pointer+amount;
 298 #ifdef LOCK_DEBUG
 299                 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
 300                         CRYPTO_thread_id(),
 301                         *pointer,amount,ret,
 302                         CRYPTO_get_lock_name(type),
 303                         file,line);
 304 #endif
 305                 *pointer=ret;
 306                 CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE,type,file,line);
 307                 }
 308         return(ret);
 309         }
 310
 311 #ifdef LOCK_DEBUG
 312 const char *CRYPTO_get_lock_name(int type)
 313         {
 314         if (type < 0)
 315                 return("ERROR");
 316         else if (type < CRYPTO_NUM_LOCKS)
 317                 return(lock_names[type]);
 318         else if (type-CRYPTO_NUM_LOCKS >= sk_num(app_locks))
 319                 return("ERROR");
 320         else
 321                 return(sk_value(app_locks,type-CRYPTO_NUM_LOCKS));
 322         }
 323 #endif /*LOCK_DEBUG*/
 324
 325 #ifdef _DLL
 326 #ifdef WIN32
 327
 328 /* All we really need to do is remove the 'error' state when a thread
 329  * detaches */
 330
 331 BOOL WINAPI DLLEntryPoint(HINSTANCE hinstDLL, DWORD fdwReason,
 332              LPVOID lpvReserved)
 333         {
 334         switch(fdwReason)
 335                 {
 336         case DLL_PROCESS_ATTACH:
 337                 break;
 338         case DLL_THREAD_ATTACH:
 339                 break;
 340         case DLL_THREAD_DETACH:
 341                 ERR_remove_state(0);
 342                 break;
 343         case DLL_PROCESS_DETACH:
 344                 break;
 345                 }
 346         return(TRUE);
 347         }
 348 #endif
 349
 350 #endif