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 -- http://code.google.com/p/umurmur/",
115 UMURMUR_VERSION, PROTVER_MAJOR, PROTVER_MINOR, PROTVER_PATCH);
117 /* Main server loop */
118 while (!shutdown_server) {
119 struct sockaddr_in remote;
122 pollfds[UDP_SOCK].revents = 0;
123 pollfds[TCP_SOCK].revents = 0;
124 clientcount = Client_getfds(&pollfds[2]);
126 timeout = (int)(1000000LL - (int64_t)Timer_elapsed(&janitorTimer)) / 1000LL;
129 Timer_restart(&janitorTimer);
130 timeout = (int)(1000000LL - (int64_t)Timer_elapsed(&janitorTimer)) / 1000LL;
132 rc = poll(pollfds, clientcount + 2, timeout);
133 if (rc == 0) { /* Timeout */
135 Timer_restart(&janitorTimer);
140 if (errno == EINTR) /* signal */
143 Log_fatal("poll: error %d", errno);
145 if (pollfds[LISTEN_SOCK].revents) { /* New tcp connection */
148 addrlen = sizeof(struct sockaddr_in);
149 tcpfd = accept(pollfds[LISTEN_SOCK].fd, (struct sockaddr*)&remote, &addrlen);
150 fcntl(tcpfd, F_SETFL, O_NONBLOCK);
151 setsockopt(tcpfd, IPPROTO_TCP, TCP_NODELAY, (char *) &flag, sizeof(int));
152 Log_debug("Connection from %s port %d\n", inet_ntoa(remote.sin_addr),
153 ntohs(remote.sin_port));
154 Client_add(tcpfd, &remote);
157 if (pollfds[UDP_SOCK].revents) {
160 for (i = 0; i < clientcount; i++) {
161 if (pollfds[i + 2].revents & POLLIN) {
162 Client_read_fd(pollfds[i + 2].fd);
164 if (pollfds[i + 2].revents & POLLOUT) {
165 Client_write_fd(pollfds[i + 2].fd);
170 /* Disconnect clients */
171 Client_disconnect_all();
175 void Server_shutdown()
177 shutdown_server = true;