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114 lines
3.3 KiB
C
114 lines
3.3 KiB
C
/* Test the connect function.
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Copyright (C) 2024-2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <arpa/inet.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <stdbool.h>
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#include <support/check.h>
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#include <support/xsocket.h>
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#include <support/xunistd.h>
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#include <sys/socket.h>
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#include <stdio.h>
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static struct sockaddr_in server_address;
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int
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open_socket_inet_tcp (void)
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{
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int fd = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
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if (fd < 0)
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{
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if (errno == EAFNOSUPPORT)
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FAIL_UNSUPPORTED ("The host does not support IPv4");
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else
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FAIL_EXIT1 ("socket (AF_INET, SOCK_STREAM, IPPROTO_TCP): %m\n");
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}
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return fd;
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}
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static pid_t
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start_server (void)
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{
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server_address.sin_family = AF_INET;
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server_address.sin_port = 0;
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server_address.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
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int server_sock = open_socket_inet_tcp ();
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xbind (server_sock, (struct sockaddr *) &server_address,
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sizeof (server_address));
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socklen_t sa_len = sizeof (server_address);
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xgetsockname (server_sock, (struct sockaddr *) &server_address, &sa_len);
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xlisten (server_sock, 5);
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pid_t my_pid = xfork ();
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if (my_pid > 0)
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{
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xclose (server_sock);
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return my_pid;
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}
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struct sockaddr_in client_address;
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socklen_t ca_len = sizeof (server_address);
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int client_sock = xaccept (server_sock, (struct sockaddr *) &client_address,
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&ca_len);
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printf ("socket accepted %d\n", client_sock);
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_exit (0);
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}
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static int
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do_test (void)
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{
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pid_t serv_pid;
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struct sockaddr_in peer;
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socklen_t peer_len;
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serv_pid = start_server ();
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int client_sock = open_socket_inet_tcp ();
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xconnect (client_sock, (const struct sockaddr *) &server_address,
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sizeof (server_address));
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/* A second connect with same arguments should fail with EISCONN. */
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int result = connect (client_sock,
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(const struct sockaddr *) &server_address,
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sizeof (server_address));
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if (result == 0 || errno != EISCONN)
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FAIL_EXIT1 ("Second connect (%d), should fail with EISCONN: %m",
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client_sock);
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peer_len = sizeof (peer);
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xgetpeername (client_sock, (struct sockaddr *) &peer, &peer_len);
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TEST_COMPARE (peer_len, sizeof (peer));
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TEST_COMPARE (peer.sin_port, server_address.sin_port);
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TEST_COMPARE_BLOB (&peer.sin_addr, sizeof (peer.sin_addr),
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&server_address.sin_addr,
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sizeof (server_address.sin_addr));
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int status;
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xwaitpid (serv_pid, &status, 0);
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TEST_COMPARE (status, 0);
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return 0;
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}
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#include <support/test-driver.c>
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