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>
56 bool_t shutdown_server;
60 int timeout = 1000, rc;
61 struct pollfd *pollfds;
62 int tcpsock, sockopt = 1;
63 struct sockaddr_in sin;
65 etimer_t janitorTimer;
67 /* max clients + listen sock + udp sock + client connecting that will be disconnected */
68 pollfds = malloc((getIntConf(MAX_CLIENTS) + 3) * sizeof(struct pollfd));
70 Log_fatal("out of memory");
72 /* Prepare TCP socket */
73 memset(&sin, 0, sizeof(sin));
74 tcpsock = socket(PF_INET, SOCK_STREAM, 0);
77 if (setsockopt(tcpsock, SOL_SOCKET, SO_REUSEADDR, &sockopt, sizeof(int)) != 0)
78 Log_fatal("setsockopt: %s", strerror(errno));
79 sin.sin_family = AF_INET;
80 sin.sin_port = htons(getIntConf(BINDPORT));
81 sin.sin_addr.s_addr = inet_addr(getStrConf(BINDADDR)) == -1 ? inet_addr("0.0.0.0") : inet_addr(getStrConf(BINDADDR));
82 rc = bind(tcpsock, (struct sockaddr *) &sin, sizeof (struct sockaddr_in));
83 if (rc < 0) Log_fatal("bind: %s", strerror(errno));
84 rc = listen(tcpsock, 3);
85 if (rc < 0) Log_fatal("listen");
86 fcntl(tcpsock, F_SETFL, O_NONBLOCK);
88 pollfds[LISTEN_SOCK].fd = tcpsock;
89 pollfds[LISTEN_SOCK].events = POLLIN;
91 /* Prepare UDP socket */
92 memset(&sin, 0, sizeof(sin));
93 udpsock = socket(PF_INET, SOCK_DGRAM, 0);
94 sin.sin_family = AF_INET;
95 sin.sin_port = htons(getIntConf(BINDPORT));
96 sin.sin_addr.s_addr = inet_addr(getStrConf(BINDADDR)) == -1 ? inet_addr("0.0.0.0") : inet_addr(getStrConf(BINDADDR));
97 rc = bind(udpsock, (struct sockaddr *) &sin, sizeof (struct sockaddr_in));
99 Log_fatal("bind %d %s: %s", getIntConf(BINDPORT), getStrConf(BINDADDR), strerror(errno));
101 rc = setsockopt(udpsock, IPPROTO_IP, IP_TOS, &val, sizeof(val));
103 Log_fatal("Server: Failed to set TOS for UDP Socket");
105 rc = setsockopt(udpsock, IPPROTO_IP, IP_TOS, &val, sizeof(val));
107 Log_fatal("Server: Failed to set TOS for UDP Socket");
109 fcntl(udpsock, F_SETFL, O_NONBLOCK);
110 pollfds[UDP_SOCK].fd = udpsock;
111 pollfds[UDP_SOCK].events = POLLIN | POLLHUP | POLLERR;
113 Timer_init(&janitorTimer);
115 Log_info("uMurmur version %s protocol version %d.%d.%d",
116 UMURMUR_VERSION, PROTVER_MAJOR, PROTVER_MINOR, PROTVER_PATCH);
117 Log_info("Visit http://code.google.com/p/umurmur/");
119 /* Main server loop */
120 while (!shutdown_server) {
121 struct sockaddr_in remote;
124 pollfds[UDP_SOCK].revents = 0;
125 pollfds[TCP_SOCK].revents = 0;
126 clientcount = Client_getfds(&pollfds[2]);
128 timeout = (int)(1000000LL - (int64_t)Timer_elapsed(&janitorTimer)) / 1000LL;
131 Timer_restart(&janitorTimer);
132 timeout = (int)(1000000LL - (int64_t)Timer_elapsed(&janitorTimer)) / 1000LL;
134 rc = poll(pollfds, clientcount + 2, timeout);
135 if (rc == 0) { /* Timeout */
137 Timer_restart(&janitorTimer);
142 if (errno == EINTR) /* signal */
145 Log_fatal("poll: error %d", errno);
147 if (pollfds[LISTEN_SOCK].revents) { /* New tcp connection */
150 addrlen = sizeof(struct sockaddr_in);
151 tcpfd = accept(pollfds[LISTEN_SOCK].fd, (struct sockaddr*)&remote, &addrlen);
152 fcntl(tcpfd, F_SETFL, O_NONBLOCK);
153 setsockopt(tcpfd, IPPROTO_TCP, TCP_NODELAY, (char *) &flag, sizeof(int));
154 Log_debug("Connection from %s port %d\n", inet_ntoa(remote.sin_addr),
155 ntohs(remote.sin_port));
156 Client_add(tcpfd, &remote);
159 if (pollfds[UDP_SOCK].revents) {
162 for (i = 0; i < clientcount; i++) {
163 if (pollfds[i + 2].revents & POLLIN) {
164 Client_read_fd(pollfds[i + 2].fd);
166 if (pollfds[i + 2].revents & POLLOUT) {
167 Client_write_fd(pollfds[i + 2].fd);
172 /* Disconnect clients */
173 Client_disconnect_all();
177 void Server_shutdown()
179 shutdown_server = true;