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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2023 Gleb Smirnoff <glebius@FreeBSD.org>
*
* 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 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 AUTHOR 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.
*/
#include <sys/socket.h>
#include <netinet/in.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <atf-c.h>
static int
tcp4_listensock(struct sockaddr_in *sin)
{
int l;
ATF_REQUIRE((l = socket(PF_INET, SOCK_STREAM, 0)) > 0);
ATF_REQUIRE(setsockopt(l, SOL_SOCKET, SO_REUSEADDR, &(socklen_t){1},
sizeof(int)) == 0);
*sin = (struct sockaddr_in){
.sin_len = sizeof(sin),
.sin_family = AF_INET,
.sin_addr.s_addr = htonl(INADDR_LOOPBACK),
};
ATF_REQUIRE(bind(l, (struct sockaddr *)sin, sizeof(*sin)) == 0);
ATF_REQUIRE(getsockname(l, (struct sockaddr *)sin,
&(socklen_t){ sizeof(*sin) }) == 0);
ATF_REQUIRE(listen(l, -1) == 0);
return (l);
}
static int
tcp4_clientsock(struct sockaddr_in *sin)
{
int s;
ATF_REQUIRE((s = socket(PF_INET, SOCK_STREAM, 0)) > 0);
ATF_REQUIRE(connect(s, (struct sockaddr *)sin, sizeof(*sin)) == 0);
return (s);
}
ATF_TC_WITHOUT_HEAD(tcp4_zerolen);
ATF_TC_BODY(tcp4_zerolen, tc)
{
static char canary[sizeof(struct sockaddr_in)] =
{ [0 ... sizeof(struct sockaddr_in) - 1] = 0xa };
struct sockaddr_in sin, ret;
socklen_t salen;
int l;
l = tcp4_listensock(&sin);
(void )tcp4_clientsock(&sin);
memcpy(&ret, &canary, sizeof(ret));
salen = 0;
ATF_REQUIRE(accept(l, (struct sockaddr *)&ret, &salen) > 0);
ATF_REQUIRE(memcmp(&ret, &canary, sizeof(ret)) == 0);
ATF_REQUIRE(salen == sizeof(struct sockaddr_in));
/* Note: Linux will block for connection here, we fail immediately. */
ATF_REQUIRE(accept(l, (struct sockaddr *)&ret, NULL) == -1);
ATF_REQUIRE(errno == EFAULT);
}
ATF_TC_WITHOUT_HEAD(tcp4);
ATF_TC_BODY(tcp4, tc)
{
struct sockaddr_in sin, ret;
socklen_t salen;
int l, s;
l = tcp4_listensock(&sin);
s = tcp4_clientsock(&sin);
salen = sizeof(struct sockaddr_in) + 2;
ATF_REQUIRE(accept(l, (struct sockaddr *)&ret, &salen) > 0);
ATF_REQUIRE(salen == sizeof(struct sockaddr_in));
ATF_REQUIRE(getsockname(s, (struct sockaddr *)&sin,
&(socklen_t){ sizeof(sin) }) == 0);
ATF_REQUIRE(memcmp(&ret, &sin, sizeof(sin)) == 0);
}
ATF_TC_WITHOUT_HEAD(tcp4_noaddr);
ATF_TC_BODY(tcp4_noaddr, tc)
{
struct sockaddr_in sin;
int l;
l = tcp4_listensock(&sin);
(void )tcp4_clientsock(&sin);
ATF_REQUIRE(accept(l, NULL, NULL) > 0);
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, tcp4);
ATF_TP_ADD_TC(tp, tcp4_noaddr);
ATF_TP_ADD_TC(tp, tcp4_zerolen);
return (atf_no_error());
}
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