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      1 /*	$NetBSD: t_connect.c,v 1.3 2017/01/13 20:09:48 christos Exp $	*/
      2 /*
      3  * Copyright (c) 2007, 2008 The NetBSD Foundation, Inc.
      4  * All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
     16  * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
     17  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
     20  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
     22  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
     24  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     25  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
     26  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/socket.h>
     30 #include <err.h>
     31 #include <errno.h>
     32 #include <string.h>
     33 #include <unistd.h>
     34 
     35 #include <arpa/inet.h>
     36 #include <netinet/in.h>
     37 
     38 #include <atf-c.h>
     39 
     40 ATF_TC(connect_low_port);
     41 ATF_TC_HEAD(connect_low_port, tc)
     42 {
     43 	atf_tc_set_md_var(tc, "descr", "Checks that low-port allocation "
     44 	    "works");
     45 	atf_tc_set_md_var(tc, "require.user", "root");
     46 }
     47 ATF_TC_BODY(connect_low_port, tc)
     48 {
     49 	struct sockaddr_in sin, sinlist;
     50 	int sd, val, slist;
     51 	socklen_t slen;
     52 
     53 	slist = socket(AF_INET, SOCK_STREAM, 0);
     54 	sd = socket(AF_INET, SOCK_STREAM, 0);
     55 
     56 	ATF_REQUIRE(sd > 0);
     57 	ATF_REQUIRE(slist > 0);
     58 
     59 	/* bind listening socket */
     60 	memset(&sinlist, 0, sizeof(sinlist));
     61 	sinlist.sin_family = AF_INET;
     62 	sinlist.sin_port = htons(31522);
     63 	sinlist.sin_addr.s_addr = inet_addr("127.0.0.1");
     64 
     65 	ATF_REQUIRE_EQ(bind(slist,
     66 	    (struct sockaddr *)&sinlist, sizeof(sinlist)), 0);
     67 	ATF_REQUIRE_EQ(listen(slist, 1), 0);
     68 
     69 	val = IP_PORTRANGE_LOW;
     70 	if (setsockopt(sd, IPPROTO_IP, IP_PORTRANGE, &val,
     71 	    sizeof(val)) == -1)
     72 		atf_tc_fail("setsockopt failed: %s", strerror(errno));
     73 
     74 	memset(&sin, 0, sizeof(sin));
     75 
     76 	sin.sin_port = htons(31522);
     77 	sin.sin_addr.s_addr = inet_addr("127.0.0.1");
     78 	sin.sin_family = AF_INET;
     79 
     80 	if (connect(sd, (struct sockaddr *)&sin, sizeof(sin)) == -1) {
     81 		int serrno = errno;
     82 		atf_tc_fail("connect failed: %s%s",
     83 		    strerror(serrno),
     84 		    serrno != EACCES ? "" :
     85 		    " (see http://mail-index.netbsd.org/"
     86 		    "source-changes/2007/12/16/0011.html)");
     87 	}
     88 
     89 	slen = sizeof(sin);
     90 	ATF_REQUIRE_EQ(getsockname(sd, (struct sockaddr *)&sin, &slen), 0);
     91 	ATF_REQUIRE_EQ(slen, sizeof(sin));
     92 	ATF_REQUIRE(ntohs(sin.sin_port) <= IPPORT_RESERVEDMAX);
     93 
     94 	close(sd);
     95 	close(slist);
     96 }
     97 
     98 ATF_TC(connect_foreign_family);
     99 ATF_TC_HEAD(connect_foreign_family, tc)
    100 {
    101 	atf_tc_set_md_var(tc, "descr", "Checks that connecting a socket "
    102 	    "with a different address family fails");
    103 }
    104 ATF_TC_BODY(connect_foreign_family, tc)
    105 {
    106 	struct sockaddr_in addr;
    107 
    108 	/* addr.sin_family = AF_UNSPEC = 0 */
    109 	memset(&addr, 0, sizeof(addr));
    110 
    111 	/*
    112 	 * it is not necessary to initialize sin_{addr,port} since
    113 	 * those structure members shall not be accessed if connect
    114 	 * fails correctly.
    115 	 */
    116 
    117 	int sock = socket(AF_LOCAL, SOCK_STREAM, 0);
    118 	ATF_REQUIRE(sock != -1);
    119 
    120 	ATF_REQUIRE(-1 == connect(sock, (struct sockaddr *)&addr, sizeof(addr)));
    121 	ATF_REQUIRE(EAFNOSUPPORT == errno);
    122 
    123 	close(sock);
    124 }
    125 
    126 ATF_TP_ADD_TCS(tp)
    127 {
    128 
    129 	ATF_TP_ADD_TC(tp, connect_low_port);
    130 	ATF_TP_ADD_TC(tp, connect_foreign_family);
    131 
    132 	return atf_no_error();
    133 }
    134