lib/libipx/ipx_ntoa.c

   1 /*
   2  * Copyright (c) 1986, 1993
   3  *      The Regents of the University of California.  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  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 4. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #include <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33 #if defined(LIBC_SCCS) && !defined(lint)
  34 static char sccsid[] = "@(#)ipx_ntoa.c";
  35 #endif /* LIBC_SCCS and not lint */
  36
  37 #include <sys/param.h>
  38 #include <arpa/inet.h>
  39 #include <netipx/ipx.h>
  40 #include <stdio.h>
  41
  42 static char *spectHex(char *);
  43
  44 char *
  45 ipx_ntoa(addr)
  46         struct ipx_addr addr;
  47 {
  48         static char obuf[40];
  49         union { union ipx_net net_e; u_long long_e; } net;
  50         u_short port = htons(addr.x_port);
  51         char *cp;
  52         char *cp2;
  53         u_char *up = addr.x_host.c_host;
  54         u_char *uplim = up + 6;
  55
  56         net.net_e = addr.x_net;
  57         sprintf(obuf, "%lx", (u_long)ntohl(net.long_e));
  58         cp = spectHex(obuf);
  59         cp2 = cp + 1;
  60         while (*up==0 && up < uplim) up++;
  61         if (up == uplim) {
  62                 if (port) {
  63                         sprintf(cp, ".0");
  64                         cp += 2;
  65                 }
  66         } else {
  67                 sprintf(cp, ".%x", *up++);
  68                 while (up < uplim) {
  69                         while (*cp) cp++;
  70                         sprintf(cp, "%02x", *up++);
  71                 }
  72                 cp = spectHex(cp2);
  73         }
  74         if (port) {
  75                 sprintf(cp, ".%x", port);
  76                 spectHex(cp + 1);
  77         }
  78         return (obuf);
  79 }
  80
  81 static char *
  82 spectHex(p0)
  83         char *p0;
  84 {
  85         int ok = 0;
  86         int nonzero = 0;
  87         char *p = p0;
  88         for (; *p; p++) switch (*p) {
  89
  90         case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
  91         case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
  92                 ok = 1;
  93         case '1': case '2': case '3': case '4': case '5':
  94         case '6': case '7': case '8': case '9':
  95                 nonzero = 1;
  96         }
  97         if (nonzero && !ok) { *p++ = 'H'; *p = 0; }
  98         return (p);
  99 }