crypto/dist/heimdal/include/bits.c

   1 /*
   2  * Copyright (c) 1997-2002 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifdef HAVE_CONFIG_H
  35 #include <config.h>
  36 __RCSID("$Heimdal: bits.c 18703 2006-10-20 20:33:58Z lha $"
  37         "$NetBSD$");
  38 #endif
  39 #include <stdio.h>
  40 #include <string.h>
  41 #include <stdlib.h>
  42 #include <ctype.h>
  43
  44 #define BITSIZE(TYPE)                                           \
  45 {                                                               \
  46     int b = 0; TYPE x = 1, zero = 0; const char *pre = "u";     \
  47     char tmp[128], tmp2[128];                                   \
  48     while(x){ x <<= 1; b++; if(x < zero) pre=""; }              \
  49     if(b >= len){                                               \
  50         int tabs;                                               \
  51         sprintf(tmp, "%sint%d_t" , pre, len);                   \
  52         sprintf(tmp2, "typedef %s %s;", #TYPE, tmp);            \
  53         tabs = 5 - strlen(tmp2) / 8;                            \
  54         fprintf(f, "%s", tmp2);                                 \
  55         while(tabs-- > 0) fprintf(f, "\t");                     \
  56         fprintf(f, "/* %2d bits */\n", b);                      \
  57         return;                                                 \
  58     }                                                           \
  59 }
  60
  61 #ifndef HAVE___ATTRIBUTE__
  62 #define __attribute__(x)
  63 #endif
  64
  65 static void
  66 try_signed(FILE *f, int len)  __attribute__ ((unused));
  67
  68 static void
  69 try_unsigned(FILE *f, int len) __attribute__ ((unused));
  70
  71 static int
  72 print_bt(FILE *f, int flag) __attribute__ ((unused));
  73
  74 static void
  75 try_signed(FILE *f, int len)
  76 {
  77     BITSIZE(signed char);
  78     BITSIZE(short);
  79     BITSIZE(int);
  80     BITSIZE(long);
  81 #ifdef HAVE_LONG_LONG
  82     BITSIZE(long long);
  83 #endif
  84     fprintf(f, "/* There is no %d bit type */\n", len);
  85 }
  86
  87 static void
  88 try_unsigned(FILE *f, int len)
  89 {
  90     BITSIZE(unsigned char);
  91     BITSIZE(unsigned short);
  92     BITSIZE(unsigned int);
  93     BITSIZE(unsigned long);
  94 #ifdef HAVE_LONG_LONG
  95     BITSIZE(unsigned long long);
  96 #endif
  97     fprintf(f, "/* There is no %d bit type */\n", len);
  98 }
  99
 100 static int
 101 print_bt(FILE *f, int flag)
 102 {
 103     if(flag == 0){
 104         fprintf(f, "/* For compatibility with various type definitions */\n");
 105         fprintf(f, "#ifndef __BIT_TYPES_DEFINED__\n");
 106         fprintf(f, "#define __BIT_TYPES_DEFINED__\n");
 107         fprintf(f, "\n");
 108     }
 109     return 1;
 110 }
 111
 112 int main(int argc, char **argv)
 113 {
 114     FILE *f;
 115     int flag;
 116     const char *fn, *hb;
 117
 118     if (argc > 1 && strcmp(argv[1], "--version") == 0) {
 119         printf("some version");
 120         return 0;
 121     }
 122
 123     if(argc < 2){
 124         fn = "bits.h";
 125         hb = "__BITS_H__";
 126         f = stdout;
 127     } else {
 128         char *p;
 129         fn = argv[1];
 130         p = malloc(strlen(fn) + 5);
 131         sprintf(p, "__%s__", fn);
 132         hb = p;
 133         for(; *p; p++){
 134             if(!isalnum((unsigned char)*p))
 135                 *p = '_';
 136         }
 137         f = fopen(argv[1], "w");
 138     }
 139     fprintf(f, "/* %s -- this file was generated for %s by\n", fn, HOST);
 140     fprintf(f, "   %*s    %s */\n\n", (int)strlen(fn), "",
 141             "$Id: bits.c,v 1.2 2008/03/22 08:37:02 mlelstv Exp $");
 142     fprintf(f, "#ifndef %s\n", hb);
 143     fprintf(f, "#define %s\n", hb);
 144     fprintf(f, "\n");
 145 #ifdef HAVE_INTTYPES_H
 146     fprintf(f, "#include <inttypes.h>\n");
 147 #endif
 148 #ifdef HAVE_SYS_TYPES_H
 149     fprintf(f, "#include <sys/types.h>\n");
 150 #endif
 151 #ifdef HAVE_SYS_BITYPES_H
 152     fprintf(f, "#include <sys/bitypes.h>\n");
 153 #endif
 154 #ifdef HAVE_BIND_BITYPES_H
 155     fprintf(f, "#include <bind/bitypes.h>\n");
 156 #endif
 157 #ifdef HAVE_NETINET_IN6_MACHTYPES_H
 158     fprintf(f, "#include <netinet/in6_machtypes.h>\n");
 159 #endif
 160 #ifdef HAVE_SOCKLEN_T
 161     fprintf(f, "#include <sys/socket.h>\n");
 162 #endif
 163     fprintf(f, "\n");
 164
 165     flag = 0;
 166 #ifndef HAVE_INT8_T
 167     flag = print_bt(f, flag);
 168     try_signed (f, 8);
 169 #endif /* HAVE_INT8_T */
 170 #ifndef HAVE_INT16_T
 171     flag = print_bt(f, flag);
 172     try_signed (f, 16);
 173 #endif /* HAVE_INT16_T */
 174 #ifndef HAVE_INT32_T
 175     flag = print_bt(f, flag);
 176     try_signed (f, 32);
 177 #endif /* HAVE_INT32_T */
 178 #ifndef HAVE_INT64_T
 179     flag = print_bt(f, flag);
 180     try_signed (f, 64);
 181 #endif /* HAVE_INT64_T */
 182
 183 #ifndef HAVE_UINT8_T
 184     flag = print_bt(f, flag);
 185     try_unsigned (f, 8);
 186 #endif /* HAVE_UINT8_T */
 187 #ifndef HAVE_UINT16_T
 188     flag = print_bt(f, flag);
 189     try_unsigned (f, 16);
 190 #endif /* HAVE_UINT16_T */
 191 #ifndef HAVE_UINT32_T
 192     flag = print_bt(f, flag);
 193     try_unsigned (f, 32);
 194 #endif /* HAVE_UINT32_T */
 195 #ifndef HAVE_UINT64_T
 196     flag = print_bt(f, flag);
 197     try_unsigned (f, 64);
 198 #endif /* HAVE_UINT64_T */
 199
 200 #define X(S) fprintf(f, "typedef uint" #S "_t u_int" #S "_t;\n")
 201 #ifndef HAVE_U_INT8_T
 202     flag = print_bt(f, flag);
 203     X(8);
 204 #endif /* HAVE_U_INT8_T */
 205 #ifndef HAVE_U_INT16_T
 206     flag = print_bt(f, flag);
 207     X(16);
 208 #endif /* HAVE_U_INT16_T */
 209 #ifndef HAVE_U_INT32_T
 210     flag = print_bt(f, flag);
 211     X(32);
 212 #endif /* HAVE_U_INT32_T */
 213 #ifndef HAVE_U_INT64_T
 214     flag = print_bt(f, flag);
 215     X(64);
 216 #endif /* HAVE_U_INT64_T */
 217
 218     if(flag){
 219         fprintf(f, "\n");
 220         fprintf(f, "#endif /* __BIT_TYPES_DEFINED__ */\n\n");
 221     }
 222 #ifdef KRB5
 223     fprintf(f, "\n");
 224 #if defined(HAVE_SOCKLEN_T)
 225     fprintf(f, "typedef socklen_t krb5_socklen_t;\n");
 226 #else
 227     fprintf(f, "typedef int krb5_socklen_t;\n");
 228 #endif
 229 #if defined(HAVE_SSIZE_T)
 230 #ifdef HAVE_UNISTD_H
 231     fprintf(f, "#include <unistd.h>\n");
 232 #endif
 233     fprintf(f, "typedef ssize_t krb5_ssize_t;\n");
 234 #else
 235     fprintf(f, "typedef int krb5_ssize_t;\n");
 236 #endif
 237     fprintf(f, "\n");
 238 #endif /* KRB5 */
 239     fprintf(f, "#endif /* %s */\n", hb);
 240     return 0;
 241 }