125986Ssklower /* 225986Ssklower * Copyright (c) 1986 Regents of the University of California. 335361Sbostic * All rights reserved. 425986Ssklower * 542953Sbostic * This code is derived from software contributed to Berkeley by 642953Sbostic * J.Q. Johnson. 742953Sbostic * 842626Sbostic * %sccs.include.redist.c% 925986Ssklower */ 1025986Ssklower 1126637Sdonn #if defined(LIBC_SCCS) && !defined(lint) 12*50385Ssklower static char sccsid[] = "@(#)ns_addr.c 6.8 (Berkeley) 07/01/91"; 1335361Sbostic #endif /* LIBC_SCCS and not lint */ 1425986Ssklower 1546604Sbostic #include <sys/param.h> 1625986Ssklower #include <netns/ns.h> 1746604Sbostic #include <stdio.h> 1846604Sbostic #include <string.h> 1925986Ssklower 2025986Ssklower static struct ns_addr addr, zero_addr; 2125986Ssklower 2246604Sbostic static void Field(), cvtbase(); 2346604Sbostic 2425986Ssklower struct ns_addr 2525986Ssklower ns_addr(name) 2646604Sbostic const char *name; 2725986Ssklower { 2846604Sbostic char separator; 2925986Ssklower char *hostname, *socketname, *cp; 3025986Ssklower char buf[50]; 3125986Ssklower 32*50385Ssklower (void)strncpy(buf, name, sizeof(buf) - 1); 33*50385Ssklower buf[sizeof(buf) - 1] = '\0'; 3425986Ssklower 3525986Ssklower /* 3625986Ssklower * First, figure out what he intends as a field separtor. 3725986Ssklower * Despite the way this routine is written, the prefered 3825986Ssklower * form 2-272.AA001234H.01777, i.e. XDE standard. 3925986Ssklower * Great efforts are made to insure backward compatability. 4025986Ssklower */ 4125986Ssklower if (hostname = index(buf, '#')) 4225986Ssklower separator = '#'; 4325986Ssklower else { 4425986Ssklower hostname = index(buf, '.'); 4525986Ssklower if ((cp = index(buf, ':')) && 4646604Sbostic ((hostname && cp < hostname) || (hostname == 0))) { 4725986Ssklower hostname = cp; 4825986Ssklower separator = ':'; 4946604Sbostic } else 5046604Sbostic separator = '.'; 5125986Ssklower } 5225986Ssklower if (hostname) 5325986Ssklower *hostname++ = 0; 5446604Sbostic 5546604Sbostic addr = zero_addr; 5625986Ssklower Field(buf, addr.x_net.c_net, 4); 5725986Ssklower if (hostname == 0) 5825986Ssklower return (addr); /* No separator means net only */ 5925986Ssklower 6025986Ssklower socketname = index(hostname, separator); 6125986Ssklower if (socketname) { 6225986Ssklower *socketname++ = 0; 6332297Sbostic Field(socketname, (u_char *)&addr.x_port, 2); 6425986Ssklower } 6525986Ssklower 6625986Ssklower Field(hostname, addr.x_host.c_host, 6); 6725986Ssklower 6825986Ssklower return (addr); 6925986Ssklower } 7025986Ssklower 7146604Sbostic static void 7225986Ssklower Field(buf, out, len) 7346604Sbostic char *buf; 7446604Sbostic u_char *out; 7546604Sbostic int len; 7625986Ssklower { 7725986Ssklower register char *bp = buf; 7825986Ssklower int i, ibase, base16 = 0, base10 = 0, clen = 0; 7925986Ssklower int hb[6], *hp; 8025986Ssklower char *fmt; 8125986Ssklower 8225986Ssklower /* 8325986Ssklower * first try 2-273#2-852-151-014#socket 8425986Ssklower */ 8525986Ssklower if ((*buf != '-') && 8625986Ssklower (1 < (i = sscanf(buf, "%d-%d-%d-%d-%d", 8725986Ssklower &hb[0], &hb[1], &hb[2], &hb[3], &hb[4])))) { 8832297Sbostic cvtbase(1000L, 256, hb, i, out, len); 8925986Ssklower return; 9025986Ssklower } 9125986Ssklower /* 9225986Ssklower * try form 8E1#0.0.AA.0.5E.E6#socket 9325986Ssklower */ 9425986Ssklower if (1 < (i = sscanf(buf,"%x.%x.%x.%x.%x.%x", 9525986Ssklower &hb[0], &hb[1], &hb[2], &hb[3], &hb[4], &hb[5]))) { 9632297Sbostic cvtbase(256L, 256, hb, i, out, len); 9725986Ssklower return; 9825986Ssklower } 9925986Ssklower /* 10025986Ssklower * try form 8E1#0:0:AA:0:5E:E6#socket 10125986Ssklower */ 10225986Ssklower if (1 < (i = sscanf(buf,"%x:%x:%x:%x:%x:%x", 10325986Ssklower &hb[0], &hb[1], &hb[2], &hb[3], &hb[4], &hb[5]))) { 10432297Sbostic cvtbase(256L, 256, hb, i, out, len); 10525986Ssklower return; 10625986Ssklower } 10725986Ssklower /* 10825986Ssklower * This is REALLY stretching it but there was a 10925986Ssklower * comma notation separting shorts -- definitely non standard 11025986Ssklower */ 11125986Ssklower if (1 < (i = sscanf(buf,"%x,%x,%x", 11225986Ssklower &hb[0], &hb[1], &hb[2]))) { 11325986Ssklower hb[0] = htons(hb[0]); hb[1] = htons(hb[1]); 11425986Ssklower hb[2] = htons(hb[2]); 11532297Sbostic cvtbase(65536L, 256, hb, i, out, len); 11625986Ssklower return; 11725986Ssklower } 11825986Ssklower 11925986Ssklower /* Need to decide if base 10, 16 or 8 */ 12025986Ssklower while (*bp) switch (*bp++) { 12125986Ssklower 12225986Ssklower case '0': case '1': case '2': case '3': case '4': case '5': 12325986Ssklower case '6': case '7': case '-': 12425986Ssklower break; 12525986Ssklower 12625986Ssklower case '8': case '9': 12725986Ssklower base10 = 1; 12825986Ssklower break; 12925986Ssklower 13025986Ssklower case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': 13125986Ssklower case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': 13225986Ssklower base16 = 1; 13325986Ssklower break; 13425986Ssklower 13525986Ssklower case 'x': case 'X': 13625986Ssklower *--bp = '0'; 13725986Ssklower base16 = 1; 13825986Ssklower break; 13925986Ssklower 14025986Ssklower case 'h': case 'H': 14125986Ssklower base16 = 1; 14225986Ssklower /* fall into */ 14325986Ssklower 14425986Ssklower default: 14525986Ssklower *--bp = 0; /* Ends Loop */ 14625986Ssklower } 14725986Ssklower if (base16) { 14825986Ssklower fmt = "%3x"; 14925986Ssklower ibase = 4096; 15025986Ssklower } else if (base10 == 0 && *buf == '0') { 15125986Ssklower fmt = "%3o"; 15225986Ssklower ibase = 512; 15325986Ssklower } else { 15425986Ssklower fmt = "%3d"; 15525986Ssklower ibase = 1000; 15625986Ssklower } 15725986Ssklower 15825986Ssklower for (bp = buf; *bp++; ) clen++; 15925986Ssklower if (clen == 0) clen++; 16025986Ssklower if (clen > 18) clen = 18; 16125986Ssklower i = ((clen - 1) / 3) + 1; 16225986Ssklower bp = clen + buf - 3; 16325986Ssklower hp = hb + i - 1; 16425986Ssklower 16525986Ssklower while (hp > hb) { 16632297Sbostic (void)sscanf(bp, fmt, hp); 16725986Ssklower bp[0] = 0; 16825986Ssklower hp--; 16925986Ssklower bp -= 3; 17025986Ssklower } 17132297Sbostic (void)sscanf(buf, fmt, hp); 17232297Sbostic cvtbase((long)ibase, 256, hb, i, out, len); 17325986Ssklower } 17425986Ssklower 17546604Sbostic static void 17625986Ssklower cvtbase(oldbase,newbase,input,inlen,result,reslen) 17732297Sbostic long oldbase; 17832297Sbostic int newbase; 17925986Ssklower int input[]; 18025986Ssklower int inlen; 18125986Ssklower unsigned char result[]; 18225986Ssklower int reslen; 18325986Ssklower { 18425986Ssklower int d, e; 18525986Ssklower long sum; 18625986Ssklower 18725986Ssklower e = 1; 18825986Ssklower while (e > 0 && reslen > 0) { 18925986Ssklower d = 0; e = 0; sum = 0; 19025986Ssklower /* long division: input=input/newbase */ 19125986Ssklower while (d < inlen) { 19225986Ssklower sum = sum*oldbase + (long) input[d]; 19325986Ssklower e += (sum > 0); 19425986Ssklower input[d++] = sum / newbase; 19525986Ssklower sum %= newbase; 19625986Ssklower } 19725986Ssklower result[--reslen] = sum; /* accumulate remainder */ 19825986Ssklower } 19925986Ssklower for (d=0; d < reslen; d++) 20025986Ssklower result[d] = 0; 20125986Ssklower } 202