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      1 /*	$NetBSD: t_listen.c,v 1.6 2019/07/09 16:24:01 maya Exp $	*/
      2 /*
      3  * Copyright (c) 2007 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 <atf-c.h>
     31 #include <err.h>
     32 #include <errno.h>
     33 #include <fcntl.h>
     34 #include <string.h>
     35 #include <unistd.h>
     36 
     37 #include <arpa/inet.h>
     38 #include <netinet/in.h>
     39 
     40 static const char *path = "listen";
     41 
     42 ATF_TC_WITH_CLEANUP(listen_err);
     43 ATF_TC_HEAD(listen_err, tc)
     44 {
     45 	atf_tc_set_md_var(tc, "descr",
     46 	    "Checks errors from listen(2) (PR standards/46150)");
     47 }
     48 
     49 ATF_TC_BODY(listen_err, tc)
     50 {
     51 	static const size_t siz = sizeof(struct sockaddr_in);
     52 	struct sockaddr_in sina, sinb;
     53 	int fda, fdb, fdc;
     54 
     55 	(void)memset(&sina, 0, sizeof(struct sockaddr_in));
     56 	(void)memset(&sinb, 0, sizeof(struct sockaddr_in));
     57 
     58 	sina.sin_family = AF_INET;
     59 	sina.sin_port = htons(31522);
     60 	sina.sin_addr.s_addr = inet_addr("127.0.0.1");
     61 
     62 	sinb.sin_family = AF_INET;
     63 	sinb.sin_port = htons(31522);
     64 	sinb.sin_addr.s_addr = inet_addr("127.0.0.1");
     65 
     66 	fda = socket(AF_INET, SOCK_STREAM, 0);
     67 	fdb = socket(AF_INET, SOCK_STREAM, 0);
     68 	fdc = open("listen", O_RDWR | O_CREAT, 0600);
     69 
     70 	ATF_REQUIRE(fda >= 0 && fdb >= 0 && fdc >= 0);
     71 	ATF_REQUIRE_ERRNO(ENOTSOCK, listen(fdc, 1) == -1);
     72 
     73 	(void)close(fdc);
     74 	(void)unlink(path);
     75 
     76 	ATF_REQUIRE(bind(fda, (struct sockaddr *)&sina, siz) == 0);
     77 	ATF_REQUIRE(listen(fda, 1) == 0);
     78 
     79 	/*
     80 	 * According to IEEE Std 1003.1-2008: if the socket is
     81 	 * already connected, the call should fail with EINVAL.
     82 	 */
     83 	ATF_REQUIRE(connect(fdb, (struct sockaddr *)&sinb, siz) == 0);
     84 	ATF_REQUIRE_ERRNO(EINVAL, listen(fdb, 1) == -1);
     85 
     86 	(void)close(fda);
     87 	(void)close(fdb);
     88 
     89 	ATF_REQUIRE_ERRNO(EBADF, connect(fdb,
     90 		(struct sockaddr *)&sinb, siz) == -1);
     91 }
     92 
     93 ATF_TC_CLEANUP(listen_err, tc)
     94 {
     95 	(void)unlink(path);
     96 }
     97 
     98 ATF_TC(listen_low_port);
     99 ATF_TC_HEAD(listen_low_port, tc)
    100 {
    101 	atf_tc_set_md_var(tc, "descr", "Does low-port allocation work?");
    102 	atf_tc_set_md_var(tc, "require.user", "root");
    103 }
    104 
    105 ATF_TC_BODY(listen_low_port, tc)
    106 {
    107 	int sd, val;
    108 
    109 	sd = socket(AF_INET, SOCK_STREAM, 0);
    110 	ATF_REQUIRE_MSG(sd != -1, "socket failed: %s", strerror(errno));
    111 
    112 	val = IP_PORTRANGE_LOW;
    113 	if (setsockopt(sd, IPPROTO_IP, IP_PORTRANGE, &val,
    114 	    sizeof(val)) == -1)
    115 		atf_tc_fail("setsockopt failed: %s", strerror(errno));
    116 
    117 	if (listen(sd, 5) == -1) {
    118 		int serrno = errno;
    119 		atf_tc_fail("listen failed: %s%s",
    120 		    strerror(serrno),
    121 		    serrno != EACCES ? "" :
    122 		    " (see http://mail-index.netbsd.org/"
    123 		    "source-changes/2007/12/16/0011.html)");
    124 	}
    125 
    126 	close(sd);
    127 }
    128 
    129 ATF_TP_ADD_TCS(tp)
    130 {
    131 
    132 	ATF_TP_ADD_TC(tp, listen_err);
    133 	ATF_TP_ADD_TC(tp, listen_low_port);
    134 
    135 	return atf_no_error();
    136 }
    137