1 /* Copyright (C) 2009-2010, Martin Johansson <martin@fatbob.nu>
2 Copyright (C) 2005-2010, Thorvald Natvig <thorvald@natvig.com>
6 Redistribution and use in source and binary forms, with or without
7 modification, are permitted provided that the following conditions
10 - Redistributions of source code must retain the above copyright notice,
11 this list of conditions and the following disclaimer.
12 - Redistributions in binary form must reproduce the above copyright notice,
13 this list of conditions and the following disclaimer in the documentation
14 and/or other materials provided with the distribution.
15 - Neither the name of the Developers nor the names of its contributors may
16 be used to endorse or promote products derived from this software without
17 specific prior written permission.
19 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
23 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
26 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
27 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 #include <netinet/tcp.h>
35 #include <sys/socket.h>
55 bool_t shutdown_server;
59 int timeout = 1000, rc;
60 struct pollfd *pollfds;
61 int tcpsock, sockopt = 1;
62 struct sockaddr_in sin;
64 etimer_t janitorTimer;
66 /* max clients + listen sock + udp sock + client connecting that will be disconnected */
67 pollfds = malloc((getIntConf(MAX_CLIENTS) + 3) * sizeof(struct pollfd));
69 Log_fatal("out of memory");
71 /* Prepare TCP socket */
72 memset(&sin, 0, sizeof(sin));
73 tcpsock = socket(PF_INET, SOCK_STREAM, 0);
76 if (setsockopt(tcpsock, SOL_SOCKET, SO_REUSEADDR, &sockopt, sizeof(int)) != 0)
77 Log_fatal("setsockopt: %s", strerror(errno));
78 sin.sin_family = AF_INET;
79 sin.sin_port = htons(getIntConf(BINDPORT));
80 sin.sin_addr.s_addr = inet_addr(getStrConf(BINDADDR)) == -1 ? inet_addr("0.0.0.0") : inet_addr(getStrConf(BINDADDR));
81 rc = bind(tcpsock, (struct sockaddr *) &sin, sizeof (struct sockaddr_in));
82 if (rc < 0) Log_fatal("bind: %s", strerror(errno));
83 rc = listen(tcpsock, 3);
84 if (rc < 0) Log_fatal("listen");
85 fcntl(tcpsock, F_SETFL, O_NONBLOCK);
87 pollfds[LISTEN_SOCK].fd = tcpsock;
88 pollfds[LISTEN_SOCK].events = POLLIN;
90 /* Prepare UDP socket */
91 memset(&sin, 0, sizeof(sin));
92 udpsock = socket(PF_INET, SOCK_DGRAM, 0);
93 sin.sin_family = AF_INET;
94 sin.sin_port = htons(getIntConf(BINDPORT));
95 sin.sin_addr.s_addr = inet_addr(getStrConf(BINDADDR)) == -1 ? inet_addr("0.0.0.0") : inet_addr(getStrConf(BINDADDR));
96 rc = bind(udpsock, (struct sockaddr *) &sin, sizeof (struct sockaddr_in));
98 Log_fatal("bind %d %s: %s", getIntConf(BINDPORT), getStrConf(BINDADDR), strerror(errno));
100 rc = setsockopt(udpsock, IPPROTO_IP, IP_TOS, &val, sizeof(val));
102 Log_fatal("Server: Failed to set TOS for UDP Socket");
104 rc = setsockopt(udpsock, IPPROTO_IP, IP_TOS, &val, sizeof(val));
106 Log_fatal("Server: Failed to set TOS for UDP Socket");
108 fcntl(udpsock, F_SETFL, O_NONBLOCK);
109 pollfds[UDP_SOCK].fd = udpsock;
110 pollfds[UDP_SOCK].events = POLLIN | POLLHUP | POLLERR;
112 Timer_init(&janitorTimer);
114 Log_info("uMurmur version %s protocol version %d.%d.%d",
115 UMURMUR_VERSION, PROTVER_MAJOR, PROTVER_MINOR, PROTVER_PATCH);
116 Log_info("Visit http://code.google.com/p/umurmur/");
118 /* Main server loop */
119 while (!shutdown_server) {
120 struct sockaddr_in remote;
123 pollfds[UDP_SOCK].revents = 0;
124 pollfds[TCP_SOCK].revents = 0;
125 clientcount = Client_getfds(&pollfds[2]);
127 timeout = (int)(1000000LL - (int64_t)Timer_elapsed(&janitorTimer)) / 1000LL;
130 Timer_restart(&janitorTimer);
131 timeout = (int)(1000000LL - (int64_t)Timer_elapsed(&janitorTimer)) / 1000LL;
133 rc = poll(pollfds, clientcount + 2, timeout);
134 if (rc == 0) { /* Timeout */
136 Timer_restart(&janitorTimer);
141 if (errno == EINTR) /* signal */
144 Log_fatal("poll: error %d", errno);
146 if (pollfds[LISTEN_SOCK].revents) { /* New tcp connection */
149 addrlen = sizeof(struct sockaddr_in);
150 tcpfd = accept(pollfds[LISTEN_SOCK].fd, (struct sockaddr*)&remote, &addrlen);
151 fcntl(tcpfd, F_SETFL, O_NONBLOCK);
152 setsockopt(tcpfd, IPPROTO_TCP, TCP_NODELAY, (char *) &flag, sizeof(int));
153 Log_debug("Connection from %s port %d\n", inet_ntoa(remote.sin_addr),
154 ntohs(remote.sin_port));
155 Client_add(tcpfd, &remote);
158 if (pollfds[UDP_SOCK].revents) {
161 for (i = 0; i < clientcount; i++) {
162 if (pollfds[i + 2].revents & POLLIN) {
163 Client_read_fd(pollfds[i + 2].fd);
165 if (pollfds[i + 2].revents & POLLOUT) {
166 Client_write_fd(pollfds[i + 2].fd);
171 /* Disconnect clients */
172 Client_disconnect_all();
176 void Server_shutdown()
178 shutdown_server = true;