113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
/*
|
|
* Copyright (c) 2016 Limelight Networks
|
|
* All rights reserved.
|
|
*
|
|
* 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,
|
|
* without modification.
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
|
* substantially similar to the "NO WARRANTY" disclaimer below
|
|
* ("Disclaimer") and any redistribution must be conditioned upon
|
|
* including a substantially similar Disclaimer requirement for further
|
|
* binary redistribution.
|
|
*
|
|
* NO WARRANTY
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
|
|
*
|
|
* Authors: George Neville-Neil
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <arpa/inet.h>
|
|
#include <netinet/in.h>
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
|
|
#include <err.h>
|
|
#include <sysexits.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#define buflen 80
|
|
|
|
/*
|
|
* Setup a TCP server listening on a port for connections, all of
|
|
* which subseuqently have their user cookie set.
|
|
*/
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
struct sockaddr_in srv;
|
|
int sock, accepted, port, cookie;
|
|
int ret;
|
|
char recvbuf[buflen];
|
|
|
|
if (argc != 3) {
|
|
fprintf(stderr, "Usage: %s port cookie\n", argv[0]);
|
|
exit(2);
|
|
}
|
|
|
|
port = atoi(argv[1]);
|
|
cookie = atoi(argv[2]);
|
|
|
|
sock = socket(PF_INET, SOCK_STREAM, 0);
|
|
if (sock < 0)
|
|
err(EXIT_FAILURE, "socket");
|
|
|
|
memset(&srv, 0, sizeof(srv));
|
|
srv.sin_len = sizeof(srv);
|
|
srv.sin_family = AF_INET;
|
|
srv.sin_port = htons(port);
|
|
srv.sin_addr.s_addr = INADDR_ANY;
|
|
|
|
if (bind(sock, (struct sockaddr *)&srv, srv.sin_len) < 0)
|
|
err(EX_OSERR, "failed to bind to port %d", port);
|
|
|
|
if (listen(sock, 5) < 0)
|
|
err(EX_OSERR, "failed to listen on socket");
|
|
|
|
ret = setsockopt(sock, SOL_SOCKET, SO_USER_COOKIE, &cookie, sizeof(cookie));
|
|
if (ret < 0)
|
|
err(EX_OSERR, "setsockopt(SO_USER_COOKIE)");
|
|
|
|
while (1) {
|
|
|
|
accepted = accept(sock, NULL, 0);
|
|
|
|
if (accepted < 0)
|
|
err(EX_OSERR, "accept failed");
|
|
|
|
ret = setsockopt(accepted, SOL_SOCKET, SO_USER_COOKIE,
|
|
&cookie, sizeof(cookie));
|
|
if (ret < 0)
|
|
err(EX_OSERR, "setsockopt(SO_USER_COOKIE)");
|
|
|
|
ret = read(accepted, &recvbuf, buflen);
|
|
|
|
if (ret < 0)
|
|
warn("failed read");
|
|
|
|
close(accepted);
|
|
}
|
|
|
|
return (0);
|
|
}
|