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[/] [or1k/] [trunk/] [rtems-20020807/] [cpukit/] [libnetworking/] [libc/] [ns_ntoa.c] - Rev 1026
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/* * Copyright (c) 1986, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * ns_ntoa.c,v 1.2 1998/08/20 21:56:24 joel Exp */ #if defined(LIBC_SCCS) && !defined(lint) static char sccsid[] = "@(#)ns_ntoa.c 8.1 (Berkeley) 6/4/93"; #endif /* LIBC_SCCS and not lint */ #include <sys/param.h> #include <netns/ns.h> #include <stdio.h> char * ns_ntoa(addr) struct ns_addr addr; { static char obuf[40]; union { union ns_net net_e; u_long long_e; } net; u_short port = htons(addr.x_port); register char *cp; char *cp2; register u_char *up = addr.x_host.c_host; u_char *uplim = up + 6; static char *spectHex(); net.net_e = addr.x_net; sprintf(obuf, "%lx", (u_long)ntohl(net.long_e)); cp = spectHex(obuf); cp2 = cp + 1; while (*up==0 && up < uplim) up++; if (up == uplim) { if (port) { sprintf(cp, ".0"); cp += 2; } } else { sprintf(cp, ".%x", *up++); while (up < uplim) { while (*cp) cp++; sprintf(cp, "%02x", *up++); } cp = spectHex(cp2); } if (port) { sprintf(cp, ".%x", port); spectHex(cp + 1); } return (obuf); } static char * spectHex(p0) char *p0; { int ok = 0; int nonzero = 0; register char *p = p0; for (; *p; p++) switch (*p) { case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': *p += ('A' - 'a'); /* fall into . . . */ case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': ok = 1; case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': nonzero = 1; } if (nonzero && !ok) { *p++ = 'H'; *p = 0; } return (p); }
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