GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/rpc/get_myaddress.c Lines: 0 14 0.0 %
Date: 2017-11-13 Branches: 0 12 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: get_myaddress.c,v 1.15 2015/09/13 15:36:56 guenther Exp $ */
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/*
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 * Copyright (c) 2010, Oracle America, Inc.
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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 are
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 * met:
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 *
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 *     * 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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 *     * Redistributions in binary form must reproduce the above
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 *       copyright notice, this list of conditions and the following
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 *       disclaimer in the documentation and/or other materials
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 *       provided with the distribution.
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 *     * Neither the name of the "Oracle America, Inc." nor the names of its
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 *       contributors may be used to endorse or promote products derived
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 *       from this software without specific prior written permission.
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 *
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 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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 *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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 *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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 *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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 *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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 *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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 *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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 *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/*
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 * get_myaddress.c
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 *
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 * Get client's IP address via ioctl.  This avoids using the yellowpages.
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 */
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#include <rpc/types.h>
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#include <rpc/xdr.h>
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#include <rpc/pmap_prot.h>
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#include <rpc/rpc.h>
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#include <sys/socket.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <ifaddrs.h>
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/*
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 * don't use gethostbyname, which would invoke yellow pages
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 *
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 * Avoid loopback interfaces.  We return information from a loopback
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 * interface only if there are no other possible interfaces.
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 */
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int
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get_myaddress(struct sockaddr_in *addr)
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{
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	struct ifaddrs *ifap, *ifa;
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	int loopback = 0, gotit = 0;
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	if (getifaddrs(&ifap) != 0)
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		return (-1);
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  again:
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	for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
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		if ((ifa->ifa_flags & IFF_UP) &&
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		    ifa->ifa_addr->sa_family == AF_INET &&
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		    (loopback == 1 && (ifa->ifa_flags & IFF_LOOPBACK))) {
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			*addr = *((struct sockaddr_in *)ifa->ifa_addr);
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			addr->sin_port = htons(PMAPPORT);
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			gotit = 1;
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			break;
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		}
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	}
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	if (gotit == 0 && loopback == 0) {
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		loopback = 1;
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		goto again;
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	}
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	freeifaddrs(ifap);
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	return (0);
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}
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DEF_WEAK(get_myaddress);