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/***************************************************************************
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net_server.c - description
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-------------------
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begin : Mon Oct 11 2004
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copyright : (C) 2004 by Leaflet
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email : leaflet@leafok.com
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include "common.h"
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#include "io.h"
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#include "tcplib.h"
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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int
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net_server (const char *hostaddr, unsigned int port)
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{
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int namelen, seq, netint, result, flags;
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struct sockaddr_in sin;
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char temp[256];
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fd_set testfds;
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struct timeval timeout;
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socket_server = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
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if (socket_server < 0)
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{
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log_error ("Create socket failed\n");
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exit (1);
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}
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sin.sin_family = AF_INET;
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sin.sin_addr.s_addr =
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(strlen (hostaddr) > 0 ? inet_addr (hostaddr) : INADDR_ANY);
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sin.sin_port = htons (port);
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if (bind (socket_server, (struct sockaddr *) &sin, sizeof (sin)) < 0)
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{
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log_error ("Bind address %s:%u failed\n",
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inet_ntoa (sin.sin_addr), ntohs (sin.sin_port));
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exit (2);
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}
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if (listen (socket_server, 10) < 0)
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{
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log_error ("Socket listen failed\n");
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exit (3);
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}
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strcpy (hostaddr_server, inet_ntoa (sin.sin_addr));
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port_server = ntohs (sin.sin_port);
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log_std ("Listening at %s:%d\n", hostaddr_server, port_server);
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namelen = sizeof (sin);
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while (1)
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{
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FD_ZERO (&testfds);
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FD_SET (socket_server, &testfds);
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timeout.tv_sec = 1;
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timeout.tv_usec = 0;
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result = SignalSafeSelect (FD_SETSIZE, &testfds, NULL, NULL, &timeout);
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if (result < 0)
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{
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log_error ("Accept connection error\n");
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continue;
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}
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if (result == 0)
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{
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continue;
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}
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if (FD_ISSET (socket_server, &testfds))
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{
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flags = fcntl (socket_server, F_GETFL, 0);
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fcntl (socket_server, F_SETFL, flags | O_NONBLOCK);
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while ((socket_client =
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accept (socket_server, (struct sockaddr *) &sin, &namelen)) < 0)
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{
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if (errno != EWOULDBLOCK && errno != ECONNABORTED && errno != EINTR)
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{
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log_error ("Accept connection error\n");
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break;
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}
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}
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fcntl (socket_server, F_SETFL, flags);
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}
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if (socket_client < 0)
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{
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log_error ("Accept connection error\n");
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continue;
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}
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strcpy (hostaddr_client, (const char *) inet_ntoa (sin.sin_addr));
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port_client = ntohs (sin.sin_port);
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log_std ("Accept connection from %s:%d\n", hostaddr_client,
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port_client);
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if (fork_server () < 0)
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{
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log_error ("Fork error\n");
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}
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if (close (socket_client) == -1)
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{
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log_error ("Close client socket failed\n");
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}
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}
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if (close (socket_server) == -1)
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{
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log_error ("Close server socket failed\n");
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}
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return 0;
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}
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