crypto/cryptlib.c

   1 /* crypto/cryptlib.c */
   2 /* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <stdio.h>
  60 #include <string.h>
  61 #include "cryptlib.h"
  62 #include "crypto.h"
  63 #include "date.h"
  64
  65 /* real #defines in crypto.h, keep these upto date */
  66 static char* lock_names[CRYPTO_NUM_LOCKS] =
  67         {
  68         "<<ERROR>>",
  69         "err",
  70         "err_hash",
  71         "x509",
  72         "x509_info",
  73         "x509_pkey",
  74         "x509_crl",
  75         "x509_req",
  76         "dsa",
  77         "rsa",
  78         "evp_pkey",
  79         "x509_store",
  80         "ssl_ctx",
  81         "ssl_cert",
  82         "ssl_session",
  83         "ssl",
  84         "rand",
  85         "debug_malloc",
  86         "bio_gethostbyname",
  87         "BIO",
  88         };
  89
  90 #ifndef NOPROTO
  91 static void (MS_FAR *locking_callback)(int mode,int type,
  92         char *file,int line)=NULL;
  93 static int (MS_FAR *add_lock_callback)(int *pointer,int amount,
  94         int type,char *file,int line)=NULL;
  95 static unsigned long (MS_FAR *id_callback)(void)=NULL;
  96 #else
  97 static void (MS_FAR *locking_callback)()=NULL;
  98 static int (MS_FAR *add_lock_callback)()=NULL;
  99 static unsigned long (MS_FAR *id_callback)()=NULL;
 100 #endif
 101
 102 void (*CRYPTO_get_locking_callback(P_V))(P_I_I_P_I)
 103         {
 104         return(locking_callback);
 105         }
 106
 107 int (*CRYPTO_get_add_lock_callback(P_V))(P_IP_I_I_P_I)
 108         {
 109         return(add_lock_callback);
 110         }
 111
 112 void CRYPTO_set_locking_callback(func)
 113 void (*func)(P_I_I_P_I);
 114         {
 115         locking_callback=func;
 116         }
 117
 118 void CRYPTO_set_add_lock_callback(func)
 119 int (*func)(P_IP_I_I_P_I);
 120         {
 121         add_lock_callback=func;
 122         }
 123
 124 unsigned long (*CRYPTO_get_id_callback(P_V))(P_V)
 125         {
 126         return(id_callback);
 127         }
 128
 129 void CRYPTO_set_id_callback(func)
 130 unsigned long (*func)(P_V);
 131         {
 132         id_callback=func;
 133         }
 134
 135 unsigned long CRYPTO_thread_id()
 136         {
 137         unsigned long ret=0;
 138
 139         if (id_callback == NULL)
 140                 {
 141 #ifdef WIN16
 142                 ret=(unsigned long)GetCurrentTask();
 143 #elif defined(WIN32)
 144                 ret=(unsigned long)GetCurrentThreadId();
 145 #elif defined(MSDOS)
 146                 ret=1L;
 147 #else
 148                 ret=(unsigned long)getpid();
 149 #endif
 150                 }
 151         else
 152                 ret=id_callback();
 153         return(ret);
 154         }
 155
 156 void CRYPTO_lock(mode,type,file,line)
 157 int mode;
 158 int type;
 159 char *file;
 160 int line;
 161         {
 162 #ifdef LOCK_DEBUG
 163                 {
 164                 char *rw_text,*operation_text;
 165
 166                 if (mode & CRYPTO_LOCK)
 167                         operation_text="lock  ";
 168                 else if (mode & CRYPTO_UNLOCK)
 169                         operation_text="unlock";
 170                 else
 171                         operation_text="ERROR ";
 172
 173                 if (mode & CRYPTO_READ)
 174                         rw_text="r";
 175                 else if (mode & CRYPTO_WRITE)
 176                         rw_text="w";
 177                 else
 178                         rw_text="ERROR";
 179
 180                 fprintf(stderr,"lock:%08lx:(%s)%s %-18s %s:%d\n",
 181                         CRYPTO_thread_id(), rw_text, operation_text,
 182                         CRYPTO_get_lock_name(type), file, line);
 183                 }
 184 #endif
 185         if (locking_callback != NULL)
 186                 locking_callback(mode,type,file,line);
 187         }
 188
 189 int CRYPTO_add_lock(pointer,amount,type,file,line)
 190 int *pointer;
 191 int amount;
 192 int type;
 193 char *file;
 194 int line;
 195         {
 196         int ret;
 197
 198         if (add_lock_callback != NULL)
 199                 {
 200 #ifdef LOCK_DEBUG
 201                 int before= *pointer;
 202 #endif
 203
 204                 ret=add_lock_callback(pointer,amount,type,file,line);
 205 #ifdef LOCK_DEBUG
 206                 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
 207                         CRYPTO_thread_id(),
 208                         before,amount,ret,
 209                         CRYPTO_get_lock_name(type),
 210                         file,line);
 211 #endif
 212                 *pointer=ret;
 213                 }
 214         else
 215                 {
 216                 CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE,type,file,line);
 217
 218                 ret= *pointer+amount;
 219 #ifdef LOCK_DEBUG
 220                 fprintf(stderr,"ladd:%08lx:%2d+%2d->%2d %-18s %s:%d\n",
 221                         CRYPTO_thread_id(),
 222                         *pointer,amount,ret,
 223                         CRYPTO_get_lock_name(type),
 224                         file,line);
 225 #endif
 226                 *pointer=ret;
 227                 CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE,type,file,line);
 228                 }
 229         return(ret);
 230         }
 231
 232 char *CRYPTO_get_lock_name(type)
 233 int type;
 234         {
 235         if ((type < 0) || (type >= CRYPTO_NUM_LOCKS))
 236                 return("ERROR");
 237         return(lock_names[type]);
 238         }
 239
 240 #ifdef _DLL
 241 #ifdef WIN32
 242
 243 /* All we really need to do is remove the 'error' state when a thread
 244  * detaches */
 245
 246 BOOL WINAPI DLLEntryPoint(hinstDLL,fdwReason,lpvReserved)
 247 HINSTANCE hinstDLL;
 248 DWORD fdwReason;
 249 LPVOID lpvReserved;
 250         {
 251         switch(fdwReason)
 252                 {
 253         case DLL_PROCESS_ATTACH:
 254                 break;
 255         case DLL_THREAD_ATTACH:
 256                 break;
 257         case DLL_THREAD_DETACH:
 258                 ERR_remove_state(0);
 259                 break;
 260         case DLL_PROCESS_DETACH:
 261                 break;
 262                 }
 263         return(TRUE);
 264         }
 265 #endif
 266
 267 #endif