1 /* 2 * Copyright (c) 1989 Regents of the University of California. 3 * 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[] = "@(#)iso_addr.c 5.4 (Berkeley) 2/24/91"; 36 #endif /* LIBC_SCCS and not lint */ 37 38 #include <sys/types.h> 39 #include <netiso/iso.h> 40 #include <string.h> 41 42 /* States*/ 43 #define VIRGIN 0 44 #define GOTONE 1 45 #define GOTTWO 2 46 /* Inputs */ 47 #define DIGIT (4*0) 48 #define END (4*1) 49 #define DELIM (4*2) 50 51 struct iso_addr * 52 iso_addr(addr) 53 register const char *addr; 54 { 55 static struct iso_addr out_addr; 56 register char *cp = out_addr.isoa_genaddr; 57 char *cplim = cp + sizeof(out_addr.isoa_genaddr); 58 register int byte = 0, state = VIRGIN, new; 59 60 bzero((char *)&out_addr, sizeof(out_addr)); 61 do { 62 if ((*addr >= '0') && (*addr <= '9')) { 63 new = *addr - '0'; 64 } else if ((*addr >= 'a') && (*addr <= 'f')) { 65 new = *addr - 'a' + 10; 66 } else if ((*addr >= 'A') && (*addr <= 'F')) { 67 new = *addr - 'A' + 10; 68 } else if (*addr == 0) 69 state |= END; 70 else 71 state |= DELIM; 72 addr++; 73 switch (state /* | INPUT */) { 74 case GOTTWO | DIGIT: 75 *cp++ = byte; /*FALLTHROUGH*/ 76 case VIRGIN | DIGIT: 77 state = GOTONE; byte = new; continue; 78 case GOTONE | DIGIT: 79 state = GOTTWO; byte = new + (byte << 4); continue; 80 default: /* | DELIM */ 81 state = VIRGIN; *cp++ = byte; byte = 0; continue; 82 case GOTONE | END: 83 case GOTTWO | END: 84 *cp++ = byte; /* FALLTHROUGH */ 85 case VIRGIN | END: 86 break; 87 } 88 break; 89 } while (cp < cplim); 90 out_addr.isoa_len = cp - out_addr.isoa_genaddr; 91 return (&out_addr); 92 } 93 static char hexlist[] = "0123456789abcdef"; 94 95 char * 96 iso_ntoa(isoa) 97 const struct iso_addr *isoa; 98 { 99 static char obuf[64]; 100 register char *out = obuf; 101 register int i; 102 register u_char *in = (u_char *)isoa->isoa_genaddr; 103 u_char *inlim = in + isoa->isoa_len; 104 105 out[1] = 0; 106 while (in < inlim) { 107 i = *in++; 108 *out++ = '.'; 109 if (i > 0xf) { 110 out[1] = hexlist[i & 0xf]; 111 i >>= 4; 112 out[0] = hexlist[i]; 113 out += 2; 114 } else 115 *out++ = hexlist[i]; 116 } 117 *out = 0; 118 return(obuf + 1); 119 } 120