crypto/tmdiff.c

   1 /* crypto/tmdiff.c */
   2 /* Copyright (C) 1995-1998 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 #include <stdio.h>
  59 #include <stdlib.h>
  60 #include "cryptlib.h"
  61 #include <openssl/tmdiff.h>
  62
  63 #ifdef TIMEB
  64 #undef WIN32
  65 #undef TIMES
  66 #endif
  67
  68 #ifndef MSDOS
  69 #  ifndef WIN32
  70 #    if !defined(VMS) || defined(__DECC)
  71 #      define TIMES
  72 #    endif
  73 #  endif
  74 #endif
  75
  76 #ifndef _IRIX
  77 #  include <time.h>
  78 #endif
  79 #ifdef TIMES
  80 #  include <sys/types.h>
  81 #  include <sys/times.h>
  82 #endif
  83
  84 /* Depending on the VMS version, the tms structure is perhaps defined.
  85    The __TMS macro will show if it was.  If it wasn't defined, we should
  86    undefine TIMES, since that tells the rest of the program how things
  87    should be handled.                           -- Richard Levitte */
  88 #if defined(VMS) && defined(__DECC) && !defined(__TMS)
  89 #undef TIMES
  90 #endif
  91
  92 #if defined(sun) || defined(__ultrix)
  93 #define _POSIX_SOURCE
  94 #include <limits.h>
  95 #include <sys/param.h>
  96 #endif
  97
  98 #ifndef TIMES
  99 #include <sys/timeb.h>
 100 #endif
 101
 102 #ifdef WIN32
 103 #include <windows.h>
 104 #endif
 105
 106 /* The following if from times(3) man page.  It may need to be changed */
 107 #ifndef HZ
 108 # ifndef CLK_TCK
 109 #  ifndef _BSD_CLK_TCK_ /* FreeBSD hack */
 110 #   define HZ  100.0
 111 #  else /* _BSD_CLK_TCK_ */
 112 #   define HZ ((double)_BSD_CLK_TCK_)
 113 #  endif
 114 # else /* CLK_TCK */
 115 #  define HZ ((double)CLK_TCK)
 116 # endif
 117 #endif
 118
 119 typedef struct ms_tm
 120         {
 121 #ifdef TIMES
 122         struct tms ms_tms;
 123 #else
 124 #  ifdef WIN32
 125         HANDLE thread_id;
 126         FILETIME ms_win32;
 127 #  else
 128         struct timeb ms_timeb;
 129 #  endif
 130 #endif
 131         } MS_TM;
 132
 133 char *ms_time_new(void)
 134         {
 135         MS_TM *ret;
 136
 137         ret=(MS_TM *)Malloc(sizeof(MS_TM));
 138         if (ret == NULL)
 139                 return(NULL);
 140         memset(ret,0,sizeof(MS_TM));
 141 #ifdef WIN32
 142         ret->thread_id=GetCurrentThread();
 143 #endif
 144         return((char *)ret);
 145         }
 146
 147 void ms_time_free(char *a)
 148         {
 149         if (a != NULL)
 150                 Free(a);
 151         }
 152
 153 void ms_time_get(char *a)
 154         {
 155         MS_TM *tm=(MS_TM *)a;
 156 #ifdef WIN32
 157         FILETIME tmpa,tmpb,tmpc;
 158 #endif
 159
 160 #ifdef TIMES
 161         times(&tm->ms_tms);
 162 #else
 163 #  ifdef WIN32
 164         GetThreadTimes(tm->thread_id,&tmpa,&tmpb,&tmpc,&(tm->ms_win32));
 165 #  else
 166         ftime(&tm->ms_timeb);
 167 #  endif
 168 #endif
 169         }
 170
 171 double ms_time_diff(char *ap, char *bp)
 172         {
 173         MS_TM *a=(MS_TM *)ap;
 174         MS_TM *b=(MS_TM *)bp;
 175         double ret;
 176
 177 #ifdef TIMES
 178         ret=(b->ms_tms.tms_utime-a->ms_tms.tms_utime)/HZ;
 179 #else
 180 # ifdef WIN32
 181         {
 182 #ifdef __GNUC__
 183         signed long long la,lb;
 184 #else
 185         signed _int64 la,lb;
 186 #endif
 187         la=a->ms_win32.dwHighDateTime;
 188         lb=b->ms_win32.dwHighDateTime;
 189         la<<=32;
 190         lb<<=32;
 191         la+=a->ms_win32.dwLowDateTime;
 192         lb+=b->ms_win32.dwLowDateTime;
 193         ret=((double)(lb-la))/1e7;
 194         }
 195 # else
 196         ret=     (double)(b->ms_timeb.time-a->ms_timeb.time)+
 197                 (((double)b->ms_timeb.millitm)-
 198                 ((double)a->ms_timeb.millitm))/1000.0;
 199 #  endif
 200 #endif
 201         return((ret < 0.0000001)?0.0000001:ret);
 202         }
 203
 204 int ms_time_cmp(char *ap, char *bp)
 205         {
 206         MS_TM *a=(MS_TM *)ap,*b=(MS_TM *)bp;
 207         double d;
 208         int ret;
 209
 210 #ifdef TIMES
 211         d=(b->ms_tms.tms_utime-a->ms_tms.tms_utime)/HZ;
 212 #else
 213 # ifdef WIN32
 214         d =(b->ms_win32.dwHighDateTime&0x000fffff)*10+b->ms_win32.dwLowDateTime/1e7;
 215         d-=(a->ms_win32.dwHighDateTime&0x000fffff)*10+a->ms_win32.dwLowDateTime/1e7;
 216 # else
 217         d=       (double)(b->ms_timeb.time-a->ms_timeb.time)+
 218                 (((double)b->ms_timeb.millitm)-(double)a->ms_timeb.millitm)/1000.0;
 219 #  endif
 220 #endif
 221         if (d == 0.0)
 222                 ret=0;
 223         else if (d < 0)
 224                 ret= -1;
 225         else
 226                 ret=1;
 227         return(ret);
 228         }
 229