Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libc/rpc/bindresvport.c	Lines:	0	49	0.0 %
Date:	2017-11-13	Branches:	0	28	0.0 %


/*	$OpenBSD: bindresvport.c,v 1.18 2015/09/14 11:01:47 guenther Exp $	*/

/*
 * Copyright 1996, Jason Downs.  All rights reserved.
 * Copyright 1998, Theo de Raadt.  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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */

#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>

/*
 * Bind a socket to a privileged IP port
 */
int
bindresvport(int sd, struct sockaddr_in *sin)
{
	return bindresvport_sa(sd, (struct sockaddr *)sin);
}
DEF_WEAK(bindresvport);

/*
 * Bind a socket to a privileged port for whatever protocol.
 */
int
bindresvport_sa(int sd, struct sockaddr *sa)
{
	int old, error, af;
	struct sockaddr_storage myaddr;
	struct sockaddr_in *sin;
	struct sockaddr_in6 *sin6;
	int proto, portrange, portlow;
	u_int16_t port;
	socklen_t salen;

	if (sa == NULL) {
		salen = sizeof(myaddr);
		sa = (struct sockaddr *)&myaddr;

		if (getsockname(sd, sa, &salen) == -1)
			return -1;	/* errno is correctly set */

		af = sa->sa_family;
		memset(&myaddr, 0, salen);
	} else
		af = sa->sa_family;

	if (af == AF_INET) {
		proto = IPPROTO_IP;
		portrange = IP_PORTRANGE;
		portlow = IP_PORTRANGE_LOW;
		sin = (struct sockaddr_in *)sa;
		salen = sizeof(struct sockaddr_in);
		port = sin->sin_port;
	} else if (af == AF_INET6) {
		proto = IPPROTO_IPV6;
		portrange = IPV6_PORTRANGE;
		portlow = IPV6_PORTRANGE_LOW;
		sin6 = (struct sockaddr_in6 *)sa;
		salen = sizeof(struct sockaddr_in6);
		port = sin6->sin6_port;
	} else {
		errno = EPFNOSUPPORT;
		return (-1);
	}
	sa->sa_family = af;
	sa->sa_len = salen;

	if (port == 0) {
		socklen_t oldlen = sizeof(old);

		error = getsockopt(sd, proto, portrange, &old, &oldlen);
		if (error < 0)
			return (error);

		error = setsockopt(sd, proto, portrange, &portlow,
		    sizeof(portlow));
		if (error < 0)
			return (error);
	}

	error = bind(sd, sa, salen);

	if (port == 0) {
		int saved_errno = errno;

		if (error) {
			if (setsockopt(sd, proto, portrange, &old,
			    sizeof(old)) < 0)
				errno = saved_errno;
			return (error);
		}

		if (sa != (struct sockaddr *)&myaddr) {
			/* Hmm, what did the kernel assign... */
			if (getsockname(sd, sa, &salen) < 0)
				errno = saved_errno;
			return (error);
		}
	}
	return (error);
}
DEF_WEAK(bindresvport_sa);


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: bindresvport.c,v 1.18 2015/09/14 11:01:47 guenther Exp $ */
2
3			/*
4			* Copyright 1996, Jason Downs. All rights reserved.
5			* Copyright 1998, Theo de Raadt. All rights reserved.
6			*
7			* Redistribution and use in source and binary forms, with or without
8			* modification, are permitted provided that the following conditions
9			* are met:
10			* 1. Redistributions of source code must retain the above copyright
11			* notice, this list of conditions and the following disclaimer.
12			* 2. Redistributions in binary form must reproduce the above copyright
13			* notice, this list of conditions and the following disclaimer in the
14			* documentation and/or other materials provided with the distribution.
15			*
16			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17			* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18			* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19			* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20			* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21			* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22			* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23			* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24			* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25			* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26			*/
27
28			#include <errno.h>
29			#include <string.h>
30			#include <sys/types.h>
31			#include <sys/socket.h>
32			#include <netinet/in.h>
33
34			/*
35			* Bind a socket to a privileged IP port
36			*/
37			int
38			bindresvport(int sd, struct sockaddr_in *sin)
39			{
40			return bindresvport_sa(sd, (struct sockaddr *)sin);
41			}
42			DEF_WEAK(bindresvport);
43
44			/*
45			* Bind a socket to a privileged port for whatever protocol.
46			*/
47			int
48			bindresvport_sa(int sd, struct sockaddr *sa)
49			{
50			int old, error, af;
51			struct sockaddr_storage myaddr;
52			struct sockaddr_in *sin;
53			struct sockaddr_in6 *sin6;
54			int proto, portrange, portlow;
55			u_int16_t port;
56			socklen_t salen;
57
58			if (sa == NULL) {
59			salen = sizeof(myaddr);
60			sa = (struct sockaddr *)&myaddr;
61
62			if (getsockname(sd, sa, &salen) == -1)
63			return -1; /* errno is correctly set */
64
65			af = sa->sa_family;
66			memset(&myaddr, 0, salen);
67			} else
68			af = sa->sa_family;
69
70			if (af == AF_INET) {
71			proto = IPPROTO_IP;
72			portrange = IP_PORTRANGE;
73			portlow = IP_PORTRANGE_LOW;
74			sin = (struct sockaddr_in *)sa;
75			salen = sizeof(struct sockaddr_in);
76			port = sin->sin_port;
77			} else if (af == AF_INET6) {
78			proto = IPPROTO_IPV6;
79			portrange = IPV6_PORTRANGE;
80			portlow = IPV6_PORTRANGE_LOW;
81			sin6 = (struct sockaddr_in6 *)sa;
82			salen = sizeof(struct sockaddr_in6);
83			port = sin6->sin6_port;
84			} else {
85			errno = EPFNOSUPPORT;
86			return (-1);
87			}
88			sa->sa_family = af;
89			sa->sa_len = salen;
90
91			if (port == 0) {
92			socklen_t oldlen = sizeof(old);
93
94			error = getsockopt(sd, proto, portrange, &old, &oldlen);
95			if (error < 0)
96			return (error);
97
98			error = setsockopt(sd, proto, portrange, &portlow,
99			sizeof(portlow));
100			if (error < 0)
101			return (error);
102			}
103
104			error = bind(sd, sa, salen);
105
106			if (port == 0) {
107			int saved_errno = errno;
108
109			if (error) {
110			if (setsockopt(sd, proto, portrange, &old,
111			sizeof(old)) < 0)
112			errno = saved_errno;
113			return (error);
114			}
115
116			if (sa != (struct sockaddr *)&myaddr) {
117			/* Hmm, what did the kernel assign... */
118			if (getsockname(sd, sa, &salen) < 0)
119			errno = saved_errno;
120			return (error);
121			}
122			}
123			return (error);
124			}
125			DEF_WEAK(bindresvport_sa);