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/* Test getsockname() function.
Copyright (C) 2011-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
#include <sys/socket.h>
#include "signature.h"
SIGNATURE_CHECK (getsockname, int, (int, struct sockaddr *, socklen_t *));
#include <stdio.h>
#include <string.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <errno.h>
#include "sockets.h"
#include "macros.h"
static int
open_server_socket (void)
{
int s, x;
struct sockaddr_in ia;
s = socket (AF_INET, SOCK_STREAM, 0);
x = 1;
setsockopt (s, SOL_SOCKET, SO_REUSEPORT, &x, sizeof (x));
memset (&ia, 0, sizeof (ia));
ia.sin_family = AF_INET;
inet_pton (AF_INET, "0.0.0.0", &ia.sin_addr);
/* Port 0 means that the system should assign a port. */
ia.sin_port = htons (0);
if (bind (s, (struct sockaddr *) &ia, sizeof (ia)) < 0)
{
perror ("bind");
exit (77);
}
if (listen (s, 1) < 0)
{
perror ("listen");
exit (77);
}
return s;
}
int
main (void)
{
(void) gl_sockets_startup (SOCKETS_1_1);
/* Test behaviour for invalid file descriptors. */
{
struct sockaddr_in addr;
socklen_t addrlen = sizeof (addr);
errno = 0;
ASSERT (getsockname (-1, (struct sockaddr *) &addr, &addrlen) == -1);
ASSERT (errno == EBADF);
}
{
struct sockaddr_in addr;
socklen_t addrlen = sizeof (addr);
close (99);
errno = 0;
ASSERT (getsockname (99, (struct sockaddr *) &addr, &addrlen) == -1);
ASSERT (errno == EBADF);
}
/* Test behaviour for a server socket. */
{
int s = open_server_socket ();
struct sockaddr_in addr;
socklen_t addrlen = sizeof (addr);
memset (&addr, 0, sizeof (addr));
ASSERT (getsockname (s, (struct sockaddr *) &addr, &addrlen) == 0);
ASSERT (addr.sin_family == AF_INET);
ASSERT (ntohs (addr.sin_port) != 0);
}
return 0;
}
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