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 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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 #if defined(LIBC_SCCS) && !defined(lint) 35 static char sccsid[] = "@(#)ns_ntoa.c 8.1 (Berkeley) 6/4/93"; 36 #endif /* LIBC_SCCS and not lint */ 37 38 #include <sys/param.h> 39 #include <netns/ns.h> 40 #include <stdio.h> 41 42 static char *spectHex(char *p0); 43 44 char * 45 ns_ntoa( 46 struct ns_addr addr 47 ) 48 { 49 static char obuf[40]; 50 union { union ns_net net_e; u_long long_e; } net; 51 u_short port = htons(addr.x_port); 52 register char *cp; 53 char *cp2; 54 register u_char *up = addr.x_host.c_host; 55 u_char *uplim = up + 6; 56 57 net.net_e = addr.x_net; 58 sprintf(obuf, "%x", (UINT32)ntohl(net.long_e)); 59 cp = spectHex(obuf); 60 cp2 = cp + 1; 61 while (*up==0 && up < uplim) up++; 62 if (up == uplim) { 63 if (port) { 64 sprintf(cp, ".0"); 65 cp += 2; 66 } 67 } else { 68 sprintf(cp, ".%x", *up++); 69 while (up < uplim) { 70 while (*cp) cp++; 71 sprintf(cp, "%02x", *up++); 72 } 73 cp = spectHex(cp2); 74 } 75 if (port) { 76 sprintf(cp, ".%x", port); 77 spectHex(cp + 1); 78 } 79 return (obuf); 80 } 81 82 static char * 83 spectHex( 84 char *p0 85 ) 86 { 87 int ok = 0; 88 int nonzero = 0; 89 register char *p = p0; 90 for (; *p; p++) switch (*p) { 91 92 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': 93 *p += ('A' - 'a'); 94 /* fall into . . . */ 95 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': 96 ok = 1; 97 case '1': case '2': case '3': case '4': case '5': 98 case '6': case '7': case '8': case '9': 99 nonzero = 1; 100 } 101 if (nonzero && !ok) { *p++ = 'H'; *p = 0; } 102 return (p); 103 } 104
