1 /* $NetBSD: iso_addr.c,v 1.4 1995/02/25 06:20:47 cgd Exp $ */ 2 3 /* 4 * Copyright (c) 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #if defined(LIBC_SCCS) && !defined(lint) 37 #if 0 38 static char sccsid[] = "@(#)iso_addr.c 8.1 (Berkeley) 6/4/93"; 39 #else 40 static char rcsid[] = "$NetBSD: iso_addr.c,v 1.4 1995/02/25 06:20:47 cgd Exp $"; 41 #endif 42 #endif /* LIBC_SCCS and not lint */ 43 44 #include <sys/types.h> 45 #include <netiso/iso.h> 46 #include <string.h> 47 48 /* States*/ 49 #define VIRGIN 0 50 #define GOTONE 1 51 #define GOTTWO 2 52 /* Inputs */ 53 #define DIGIT (4*0) 54 #define END (4*1) 55 #define DELIM (4*2) 56 57 struct iso_addr * 58 iso_addr(addr) 59 register const char *addr; 60 { 61 static struct iso_addr out_addr; 62 register char *cp = out_addr.isoa_genaddr; 63 char *cplim = cp + sizeof(out_addr.isoa_genaddr); 64 register int byte = 0, state = VIRGIN, new; 65 66 bzero((char *)&out_addr, sizeof(out_addr)); 67 do { 68 if ((*addr >= '0') && (*addr <= '9')) { 69 new = *addr - '0'; 70 } else if ((*addr >= 'a') && (*addr <= 'f')) { 71 new = *addr - 'a' + 10; 72 } else if ((*addr >= 'A') && (*addr <= 'F')) { 73 new = *addr - 'A' + 10; 74 } else if (*addr == 0) 75 state |= END; 76 else 77 state |= DELIM; 78 addr++; 79 switch (state /* | INPUT */) { 80 case GOTTWO | DIGIT: 81 *cp++ = byte; /*FALLTHROUGH*/ 82 case VIRGIN | DIGIT: 83 state = GOTONE; byte = new; continue; 84 case GOTONE | DIGIT: 85 state = GOTTWO; byte = new + (byte << 4); continue; 86 default: /* | DELIM */ 87 state = VIRGIN; *cp++ = byte; byte = 0; continue; 88 case GOTONE | END: 89 case GOTTWO | END: 90 *cp++ = byte; /* FALLTHROUGH */ 91 case VIRGIN | END: 92 break; 93 } 94 break; 95 } while (cp < cplim); 96 out_addr.isoa_len = cp - out_addr.isoa_genaddr; 97 return (&out_addr); 98 } 99 static char hexlist[] = "0123456789abcdef"; 100 101 char * 102 iso_ntoa(isoa) 103 const struct iso_addr *isoa; 104 { 105 static char obuf[64]; 106 register char *out = obuf; 107 register int i; 108 register u_char *in = (u_char *)isoa->isoa_genaddr; 109 u_char *inlim = in + isoa->isoa_len; 110 111 out[1] = 0; 112 while (in < inlim) { 113 i = *in++; 114 *out++ = '.'; 115 if (i > 0xf) { 116 out[1] = hexlist[i & 0xf]; 117 i >>= 4; 118 out[0] = hexlist[i]; 119 out += 2; 120 } else 121 *out++ = hexlist[i]; 122 } 123 *out = 0; 124 return(obuf + 1); 125 } 126