Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/amd/amd/wire.c	Lines:	0	30	0.0 %
Date:	2017-11-07	Branches:	0	22	0.0 %


/*
 * Copyright (c) 1990 Jan-Simon Pendry
 * Copyright (c) 1990 Imperial College of Science, Technology & Medicine
 * Copyright (c) 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Jan-Simon Pendry at Imperial College, London.
 *
 * 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. 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.
 *
 *	from: @(#)wire.c	8.1 (Berkeley) 6/6/93
 *	$Id: wire.c,v 1.13 2014/10/24 10:29:56 schwarze Exp $
 */

/*
 * This function returns the subnet (address&netmask) for the primary network
 * interface.  If the resulting address has an entry in the hosts file, the
 * corresponding name is retuned, otherwise the address is returned in
 * standard internet format.
 * As a side-effect, a list of local IP/net address is recorded for use
 * by the islocalnet() function.
 *
 * Derived from original by Paul Anderson (23/4/90)
 * Updates from Dirk Grunwald (11/11/91)
 * Modified to use getifaddrs() by Todd C. Miller (6/14/2003)
 */

#include "am.h"

#include <ifaddrs.h>
#include <netdb.h>
#include <net/if.h>

#define NO_SUBNET "notknown"

/*
 * List of locally connected networks
 */
typedef struct addrlist addrlist;
struct addrlist {
	addrlist *ip_next;
	in_addr_t ip_addr;
	in_addr_t ip_mask;
};
static addrlist *localnets = 0;

char *
getwire(void)
{
	struct ifaddrs *ifa, *ifaddrs;
	struct hostent *hp;
	addrlist *al;
	char *s, *netname = NULL;

	if (getifaddrs(&ifaddrs))
		return strdup(NO_SUBNET);

	for (ifa = ifaddrs; ifa != NULL; ifa = ifa -> ifa_next) {
		/*
		 * Ignore non-AF_INET interfaces as well as any that
		 * are down or loopback.
		 */
		if (ifa->ifa_addr == NULL ||
		    ifa->ifa_addr->sa_family != AF_INET ||
		    !(ifa->ifa_flags & IFF_UP) ||
		    (ifa->ifa_flags & IFF_LOOPBACK))
			continue;

		/*
		 * Add interface to local network list
		 */
		al = ALLOC(addrlist);
		al->ip_addr =
		    ((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr;
		al->ip_mask =
		    ((struct sockaddr_in *)ifa->ifa_netmask)->sin_addr.s_addr;
		al->ip_next = localnets;
		localnets = al;

		/*
		 * Look up the host name; fall back to a dotted quad.
		 */
		if (netname == NULL) {
			in_addr_t subnet;
			char dq[20];

			subnet = al->ip_addr & al->ip_mask;
			hp = gethostbyaddr((char *) &subnet, 4, AF_INET);
			if (hp)
				s = hp->h_name;
			else
				s = inet_dquad(dq, sizeof(dq), subnet);
			netname = strdup(s);
		}
	}
	freeifaddrs(ifaddrs);
	return (netname ? netname : strdup(NO_SUBNET));
}

/*
 * Determine whether a network is on a local network
 * (addr) is in network byte order.
 */
int
islocalnet(in_addr_t addr)
{
	addrlist *al;

	for (al = localnets; al; al = al->ip_next)
		if (((addr ^ al->ip_addr) & al->ip_mask) == 0)
			return TRUE;

#ifdef DEBUG
	{ char buf[16];
	plog(XLOG_INFO, "%s is on a remote network", inet_dquad(buf, sizeof(buf), addr));
	}
#endif
	return FALSE;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/*
2			* Copyright (c) 1990 Jan-Simon Pendry
3			* Copyright (c) 1990 Imperial College of Science, Technology & Medicine
4			* Copyright (c) 1990, 1993
5			* The Regents of the University of California. All rights reserved.
6			*
7			* This code is derived from software contributed to Berkeley by
8			* Jan-Simon Pendry at Imperial College, London.
9			*
10			* Redistribution and use in source and binary forms, with or without
11			* modification, are permitted provided that the following conditions
12			* are met:
13			* 1. Redistributions of source code must retain the above copyright
14			* notice, this list of conditions and the following disclaimer.
15			* 2. Redistributions in binary form must reproduce the above copyright
16			* notice, this list of conditions and the following disclaimer in the
17			* documentation and/or other materials provided with the distribution.
18			* 3. Neither the name of the University nor the names of its contributors
19			* may be used to endorse or promote products derived from this software
20			* without specific prior written permission.
21			*
22			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32			* SUCH DAMAGE.
33			*
34			* from: @(#)wire.c 8.1 (Berkeley) 6/6/93
35			* $Id: wire.c,v 1.13 2014/10/24 10:29:56 schwarze Exp $
36			*/
37
38			/*
39			* This function returns the subnet (address&netmask) for the primary network
40			* interface. If the resulting address has an entry in the hosts file, the
41			* corresponding name is retuned, otherwise the address is returned in
42			* standard internet format.
43			* As a side-effect, a list of local IP/net address is recorded for use
44			* by the islocalnet() function.
45			*
46			* Derived from original by Paul Anderson (23/4/90)
47			* Updates from Dirk Grunwald (11/11/91)
48			* Modified to use getifaddrs() by Todd C. Miller (6/14/2003)
49			*/
50
51			#include "am.h"
52
53			#include <ifaddrs.h>
54			#include <netdb.h>
55			#include <net/if.h>
56
57			#define NO_SUBNET "notknown"
58
59			/*
60			* List of locally connected networks
61			*/
62			typedef struct addrlist addrlist;
63			struct addrlist {
64			addrlist *ip_next;
65			in_addr_t ip_addr;
66			in_addr_t ip_mask;
67			};
68			static addrlist *localnets = 0;
69
70			char *
71			getwire(void)
72			{
73			struct ifaddrs ifa, ifaddrs;
74			struct hostent *hp;
75			addrlist *al;
76			char s, netname = NULL;
77
78			if (getifaddrs(&ifaddrs))
79			return strdup(NO_SUBNET);
80
81			for (ifa = ifaddrs; ifa != NULL; ifa = ifa -> ifa_next) {
82			/*
83			* Ignore non-AF_INET interfaces as well as any that
84			* are down or loopback.
85			*/
86			if (ifa->ifa_addr == NULL \|\|
87			ifa->ifa_addr->sa_family != AF_INET \|\|
88			!(ifa->ifa_flags & IFF_UP) \|\|
89			(ifa->ifa_flags & IFF_LOOPBACK))
90			continue;
91
92			/*
93			* Add interface to local network list
94			*/
95			al = ALLOC(addrlist);
96			al->ip_addr =
97			((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr;
98			al->ip_mask =
99			((struct sockaddr_in *)ifa->ifa_netmask)->sin_addr.s_addr;
100			al->ip_next = localnets;
101			localnets = al;
102
103			/*
104			* Look up the host name; fall back to a dotted quad.
105			*/
106			if (netname == NULL) {
107			in_addr_t subnet;
108			char dq[20];
109
110			subnet = al->ip_addr & al->ip_mask;
111			hp = gethostbyaddr((char *) &subnet, 4, AF_INET);
112			if (hp)
113			s = hp->h_name;
114			else
115			s = inet_dquad(dq, sizeof(dq), subnet);
116			netname = strdup(s);
117			}
118			}
119			freeifaddrs(ifaddrs);
120			return (netname ? netname : strdup(NO_SUBNET));
121			}
122
123			/*
124			* Determine whether a network is on a local network
125			* (addr) is in network byte order.
126			*/
127			int
128			islocalnet(in_addr_t addr)
129			{
130			addrlist *al;
131
132			for (al = localnets; al; al = al->ip_next)
133			if (((addr ^ al->ip_addr) & al->ip_mask) == 0)
134			return TRUE;
135
136			#ifdef DEBUG
137			{ char buf[16];
138			plog(XLOG_INFO, "%s is on a remote network", inet_dquad(buf, sizeof(buf), addr));
139			}
140			#endif
141			return FALSE;
142			}