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/* $OpenBSD: inetname.c,v 1.2 2015/01/16 00:03:37 deraadt Exp $ */ |
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/*- |
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* Copyright (c) 1980, 1992, 1993 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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#include <sys/signal.h> |
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#include <sys/socket.h> |
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#include <netinet/in.h> |
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#include <netdb.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include "systat.h" |
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const char * |
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inet6name(struct in6_addr *in6) |
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{ |
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static char line[NI_MAXHOST]; |
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struct sockaddr_in6 sin6; |
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int flags; |
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flags = nflag ? NI_NUMERICHOST : 0; |
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if (IN6_IS_ADDR_UNSPECIFIED(in6)) |
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return "*"; |
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memset(&sin6, 0, sizeof(sin6)); |
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sin6.sin6_family = AF_INET6; |
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sin6.sin6_len = sizeof(struct sockaddr_in6); |
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sin6.sin6_addr = *in6; |
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if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, |
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line, sizeof(line), NULL, 0, flags) == 0) |
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return line; |
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return "?"; |
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} |
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const char * |
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inetname(struct in_addr in) |
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{ |
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static char line[NI_MAXHOST]; |
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struct sockaddr_in si; |
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int flags, e; |
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flags = nflag ? NI_NUMERICHOST : 0; |
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if (in.s_addr == INADDR_ANY) |
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return "*"; |
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memset(&si, 0, sizeof(si)); |
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si.sin_family = AF_INET; |
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si.sin_len = sizeof(struct sockaddr_in); |
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si.sin_addr = in; |
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e = getnameinfo((struct sockaddr *)&si, si.sin_len, |
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line, sizeof(line), NULL, 0, flags); |
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if (e == 0) |
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return line; |
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error("Lookup: %s", gai_strerror(e)); |
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return "?"; |
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} |