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/*
* This file is part of net-yy-inet strace test.
*
* Copyright (c) 2014-2016 Dmitry V. Levin <ldv@strace.io>
* Copyright (c) 2016-2024 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <assert.h>
#include <fcntl.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#ifndef ADDR_FAMILY
# define ADDR_FAMILY_FIELD sin_family
# define ADDR_FAMILY AF_INET
# define AF_STR "AF_INET"
# define LOOPBACK_FIELD .sin_addr.s_addr = htonl(INADDR_LOOPBACK)
# define LOOPBACK "127.0.0.1"
# define SOCKADDR_TYPE sockaddr_in
# define TCP_STR "TCP"
# define INPORT sin_port
# define INPORT_STR "sin_port"
# define INADDR_STR "sin_addr=inet_addr(\"" LOOPBACK "\")"
# define SA_FIELDS ""
#endif
int
main(void)
{
skip_if_unavailable("/proc/self/fd/");
const struct SOCKADDR_TYPE addr = {
.ADDR_FAMILY_FIELD = ADDR_FAMILY,
LOOPBACK_FIELD
};
struct sockaddr * const listen_sa = tail_memdup(&addr, sizeof(addr));
TAIL_ALLOC_OBJECT_CONST_PTR(socklen_t, len);
*len = sizeof(addr);
const int listen_fd = socket(ADDR_FAMILY, SOCK_STREAM, 0);
if (listen_fd < 0)
perror_msg_and_skip("socket");
const unsigned long listen_inode = inode_of_sockfd(listen_fd);
printf("socket(" AF_STR ", SOCK_STREAM, IPPROTO_IP) = %d<" TCP_STR
":[%lu]>\n",
listen_fd, listen_inode);
if (bind(listen_fd, listen_sa, *len))
perror_msg_and_skip("bind");
printf("bind(%d<" TCP_STR ":[%lu]>, {sa_family=" AF_STR ", " INPORT_STR
"=htons(0), " INADDR_STR SA_FIELDS "}, %u) = 0\n",
listen_fd, listen_inode, (unsigned) *len);
if (listen(listen_fd, 1))
perror_msg_and_skip("listen");
memset(listen_sa, 0, sizeof(addr));
*len = sizeof(addr);
if (getsockname(listen_fd, listen_sa, len))
perror_msg_and_fail("getsockname");
const unsigned int listen_port =
ntohs(((struct SOCKADDR_TYPE *) listen_sa)->INPORT);
printf("getsockname(%d<" TCP_STR ":[" LOOPBACK ":%u]>, {sa_family="
AF_STR ", " INPORT_STR "=htons(%u), " INADDR_STR SA_FIELDS "}"
", [%u]) = 0\n",
listen_fd, listen_port, listen_port, (unsigned) *len);
TAIL_ALLOC_OBJECT_CONST_PTR(unsigned int, optval);
*len = sizeof(*optval);
if (getsockopt(listen_fd, SOL_TCP, TCP_MAXSEG, optval, len))
perror_msg_and_fail("getsockopt");
printf("getsockopt(%d<" TCP_STR ":[" LOOPBACK ":%u]>, SOL_TCP, "
"TCP_MAXSEG, [%u], [%u]) = 0\n",
listen_fd, listen_port, *optval, (unsigned) *len);
const int connect_fd = socket(ADDR_FAMILY, SOCK_STREAM, 0);
if (connect_fd < 0)
perror_msg_and_fail("socket");
const unsigned long connect_inode = inode_of_sockfd(connect_fd);
printf("socket(" AF_STR ", SOCK_STREAM, IPPROTO_IP) = %d<" TCP_STR
":[%lu]>\n",
connect_fd, connect_inode);
*len = sizeof(addr);
if (connect(connect_fd, listen_sa, *len))
perror_msg_and_fail("connect");
printf("connect(%d<" TCP_STR ":[%lu]>, {sa_family=" AF_STR ", "
INPORT_STR "=htons(%u), " INADDR_STR SA_FIELDS "}, %u) = 0\n",
connect_fd, connect_inode, listen_port, (unsigned) *len);
struct sockaddr * const accept_sa = tail_alloc(sizeof(addr));
memset(accept_sa, 0, sizeof(addr));
*len = sizeof(addr);
const int accept_fd = accept4(listen_fd, accept_sa, len, O_CLOEXEC);
if (accept_fd < 0)
perror_msg_and_fail("accept");
const unsigned int connect_port =
ntohs(((struct SOCKADDR_TYPE *) accept_sa)->INPORT);
printf("accept4(%d<" TCP_STR ":[" LOOPBACK ":%u]>, {sa_family=" AF_STR
", " INPORT_STR "=htons(%u), " INADDR_STR SA_FIELDS "}, [%u]"
", SOCK_CLOEXEC) = %d<" TCP_STR ":[" LOOPBACK ":%u->" LOOPBACK
":%u]>\n",
listen_fd, listen_port, connect_port, (unsigned) *len,
accept_fd, listen_port, connect_port);
memset(accept_sa, 0, sizeof(addr));
*len = sizeof(addr);
if (getpeername(accept_fd, accept_sa, len))
perror_msg_and_fail("getpeername");
printf("getpeername(%d<" TCP_STR ":[" LOOPBACK ":%u->" LOOPBACK ":%u]>"
", {sa_family=" AF_STR ", " INPORT_STR "=htons(%u)"
", " INADDR_STR SA_FIELDS "}, [%u]) = 0\n",
accept_fd, listen_port, connect_port, connect_port,
(unsigned) *len);
memset(listen_sa, 0, sizeof(addr));
*len = sizeof(addr);
if (getpeername(connect_fd, listen_sa, len))
perror_msg_and_fail("getpeername");
printf("getpeername(%d<" TCP_STR ":[" LOOPBACK ":%u->" LOOPBACK ":%u]>"
", {sa_family=" AF_STR ", " INPORT_STR "=htons(%u)"
", " INADDR_STR SA_FIELDS "}, [%u]) = 0\n",
connect_fd, connect_port, listen_port, listen_port,
(unsigned) *len);
*len = sizeof(*optval);
if (setsockopt(connect_fd, SOL_TCP, TCP_MAXSEG, optval, *len))
perror_msg_and_fail("setsockopt");
printf("setsockopt(%d<" TCP_STR ":[" LOOPBACK ":%u->" LOOPBACK ":%u]>"
", SOL_TCP, TCP_MAXSEG, [%u], %u) = 0\n",
connect_fd, connect_port, listen_port, *optval,
(unsigned) *len);
char text[] = "text";
assert(sendto(connect_fd, text, sizeof(text) - 1,
MSG_DONTROUTE | MSG_DONTWAIT, NULL, 0) == sizeof(text) - 1);
printf("sendto(%d<" TCP_STR ":[" LOOPBACK ":%u->" LOOPBACK ":%u]>, "
"\"%s\", %u, MSG_DONTROUTE|MSG_DONTWAIT, NULL, 0) = %u\n",
connect_fd, connect_port, listen_port, text,
(unsigned) sizeof(text) - 1, (unsigned) sizeof(text) - 1);
assert(close(connect_fd) == 0);
printf("close(%d<" TCP_STR ":[" LOOPBACK ":%u->" LOOPBACK ":%u]>) = "
"0\n",
connect_fd, connect_port, listen_port);
assert(recvfrom(accept_fd, text, sizeof(text) - 1, MSG_WAITALL,
NULL, NULL) == sizeof(text) - 1);
printf("recvfrom(%d<" TCP_STR ":[" LOOPBACK ":%u->" LOOPBACK ":%u]>, "
"\"%s\", %u, MSG_WAITALL, NULL, NULL) = %u\n",
accept_fd, listen_port, connect_port, text,
(unsigned) sizeof(text) - 1, (unsigned) sizeof(text) - 1);
assert(close(accept_fd) == 0);
printf("close(%d<" TCP_STR ":[" LOOPBACK ":%u->" LOOPBACK ":%u]>) = "
"0\n",
accept_fd, listen_port, connect_port);
assert(close(listen_fd) == 0);
printf("close(%d<" TCP_STR ":[" LOOPBACK ":%u]>) = 0\n",
listen_fd, listen_port);
puts("+++ exited with 0 +++");
return 0;
}
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