1 /* Copyright (C) 2009-2014, Martin Johansson <martin@fatbob.nu>
2 Copyright (C) 2005-2014, 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>
50 #include "sharedmemory.h"
53 bool_t shutdown_server;
54 extern char *bindaddr;
55 extern char *bindaddr6;
59 bool_t hasv4 = true, hasv6 = true;
62 int nofServerSocks = 4;
64 /* Check which IP versions are supported by the system. */
65 void checkIPversions()
69 testsocket = socket(PF_INET, SOCK_STREAM, 0);
70 hasv4 = (errno == EAFNOSUPPORT || errno == EPROTONOSUPPORT) ? false : true;
71 if (!(testsocket < 0)) close(testsocket);
73 testsocket = socket(PF_INET6, SOCK_STREAM, 0);
74 hasv6 = (errno == EAFNOSUPPORT || errno == EPROTONOSUPPORT) ? false : true;
75 if (!(testsocket < 0)) close(testsocket);
79 Log_info("IPv4 is not supported by this system");
85 Log_info("IPv6 is not supported by this system");
88 if(nofServerSocks == 0)
90 Log_fatal("Neither IPv4 nor IPv6 are supported by this system");
94 /* Initialize the address structures for IPv4 and IPv6 */
95 struct sockaddr_storage** Server_setupAddressesAndPorts()
97 struct sockaddr_storage** addresses = calloc(2, sizeof(void*));
99 struct sockaddr_storage* v4address = calloc(1, sizeof(struct sockaddr_storage));
100 v4address->ss_family = AF_INET;
101 struct sockaddr_storage* v6address = calloc(1, sizeof(struct sockaddr_storage));
102 v6address->ss_family = AF_INET6;
104 #if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__APPLE__)
105 v4address->ss_len = sizeof(struct sockaddr_storage);
106 v6address->ss_len = sizeof(struct sockaddr_storage);
111 error = inet_pton(AF_INET, (!bindaddr) ? ((getStrConf(BINDADDR)) ? getStrConf(BINDADDR) : "0.0.0.0")
112 : bindaddr, &(((struct sockaddr_in*)v4address)->sin_addr));
114 Log_fatal("Invalid IPv4 address supplied!");
115 else if (error == -1)
116 Log_warn("Could not allocate IPv4 address");
118 error = inet_pton(AF_INET6, (!bindaddr6) ? ((getStrConf(BINDADDR6)) ? getStrConf(BINDADDR6) : "::")
119 : bindaddr6, &(((struct sockaddr_in6*)v6address)->sin6_addr));
121 Log_fatal("Invalid IPv6 address supplied!");
122 else if (error == -1)
123 Log_warn("Could not allocate IPv6 address");
125 ((struct sockaddr_in*)v4address)->sin_port = htons((bindport) ? bindport : getIntConf(BINDPORT));
126 ((struct sockaddr_in6*)v6address)->sin6_port = htons((bindport6) ? bindport6 : getIntConf(BINDPORT6));
128 addresses[0] = v4address;
129 addresses[1] = v6address;
134 void Server_runLoop(struct pollfd* pollfds)
136 int timeout, rc, clientcount;
138 etimer_t janitorTimer;
139 Timer_init(&janitorTimer);
141 while (!shutdown_server) {
142 struct sockaddr_storage remote;
145 #ifdef USE_SHAREDMEMORY_API
146 Sharedmemory_alivetick();
149 for(i = 0; i < nofServerSocks; i++) {
150 pollfds[i].revents = 0;
153 clientcount = Client_getfds(&pollfds[nofServerSocks]);
155 timeout = (int)(1000000LL - (int64_t)Timer_elapsed(&janitorTimer)) / 1000LL;
158 Timer_restart(&janitorTimer);
159 timeout = (int)(1000000LL - (int64_t)Timer_elapsed(&janitorTimer)) / 1000LL;
161 rc = poll(pollfds, clientcount + nofServerSocks, timeout);
163 /* Poll timed out, do maintenance */
164 Timer_restart(&janitorTimer);
169 if (errno == EINTR) /* signal */
172 Log_fatal("poll: error %d (%s)", errno, strerror(errno));
175 /* Check for new connection */
176 for (i = 0; i < nofServerSocks / 2; i++) {
177 if (pollfds[i].revents) {
179 uint32_t addrlen = sizeof(struct sockaddr_storage);
180 tcpfd = accept(pollfds[i].fd, (struct sockaddr *)&remote, &addrlen);
181 fcntl(tcpfd, F_SETFL, O_NONBLOCK);
182 setsockopt(tcpfd, IPPROTO_TCP, TCP_NODELAY, (char *) &on, sizeof(int));
183 char *addressString = Util_addressToString(&remote);
184 Log_debug("Connection from %s port %d\n", addressString, Util_addressToPort(&remote));
186 if (Client_add(tcpfd, &remote) < 0)
191 for (i = nofServerSocks / 2; i < nofServerSocks; i++) {
192 if (pollfds[i].revents)
193 Client_read_udp(udpsocks[i - nofServerSocks / 2]);
196 for (i = 0; i < clientcount; i++) {
197 if (pollfds[nofServerSocks + i].revents & POLLIN)
198 Client_read_fd(pollfds[nofServerSocks + i].fd);
200 if (pollfds[nofServerSocks + i].revents & POLLOUT)
201 Client_write_fd(pollfds[nofServerSocks + i].fd);
203 #ifdef USE_SHAREDMEMORY_API
204 Sharedmemory_update();
209 void Server_setupTCPSockets(struct sockaddr_storage* addresses[2], struct pollfd* pollfds)
215 /* IPv4 socket setup */
216 sockets[0] = socket(PF_INET, SOCK_STREAM, 0);
218 Log_fatal("socket IPv4");
219 if (setsockopt(sockets[0], SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int)) != 0)
220 Log_fatal("setsockopt IPv4: %s", strerror(errno));
221 if (bind(sockets[0], (struct sockaddr *)addresses[0], sizeof (struct sockaddr_in)) < 0) {
222 char *addressString = Util_addressToString(addresses[0]);
223 Log_fatal("bind %s %d: %s", addressString, Util_addressToPort(addresses[0]), strerror(errno));
226 if (listen(sockets[0], 3) < 0)
227 Log_fatal("listen IPv4");
228 fcntl(sockets[0], F_SETFL, O_NONBLOCK);
230 pollfds[0].fd = sockets[0];
231 pollfds[0].events = POLLIN;
235 /* IPv6 socket setup */
236 sockets[1] = socket(PF_INET6, SOCK_STREAM, 0);
238 Log_fatal("socket IPv6: %s", strerror(errno));
239 if (setsockopt(sockets[1], SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int)) != 0)
240 Log_fatal("setsockopt IPv6: %s", strerror(errno));
241 if (setsockopt(sockets[1], IPPROTO_IPV6, IPV6_V6ONLY, &yes, sizeof(int)) != 0)
242 Log_fatal("setsockopt IPv6: %s", strerror(errno));
243 if (bind(sockets[1], (struct sockaddr *)addresses[1], sizeof (struct sockaddr_in6)) < 0) {
244 char *addressString = Util_addressToString(addresses[1]);
245 Log_fatal("bind %s %d: %s", addressString, Util_addressToPort(addresses[1]), strerror(errno));
248 if (listen(sockets[1], 3) < 0)
249 Log_fatal("listen IPv6");
250 fcntl(sockets[1], F_SETFL, O_NONBLOCK);
253 /* If there is an IPv4 address, then IPv6 will use the second socket, otherwise it uses the first */
254 pollfds[(hasv4) ? 1 : 0].fd = sockets[1];
255 pollfds[(hasv4) ? 1 : 0].events = POLLIN;
259 void Server_setupUDPSockets(struct sockaddr_storage* addresses[2], struct pollfd* pollfds)
262 int sockets[2] = {-1, -1};
264 if((udpsocks = calloc(nofServerSocks / 2, sizeof(int))) == NULL)
265 Log_fatal("Out of memory (%s:%s)", __FILE__, __LINE__);
268 sockets[0] = socket(PF_INET, SOCK_DGRAM, 0);
269 if (bind(sockets[0], (struct sockaddr *) addresses[0], sizeof (struct sockaddr_in)) < 0) {
270 char *addressString = Util_addressToString(addresses[0]);
271 Log_fatal("bind %s %d: %s", addressString, Util_addressToPort(addresses[0]), strerror(errno));
275 if (setsockopt(sockets[0], IPPROTO_IP, IP_TOS, &val, sizeof(val)) < 0)
276 Log_warn("Server: Failed to set TOS for UDP Socket");
278 if (setsockopt(sockets[0], IPPROTO_IP, IP_TOS, &val, sizeof(val)) < 0)
279 Log_warn("Server: Failed to set TOS for UDP Socket");
281 fcntl(sockets[0], F_SETFL, O_NONBLOCK);
282 pollfds[(hasv6) ? 2 : 1].fd = sockets[0];
283 pollfds[(hasv6) ? 2 : 1].events = POLLIN | POLLHUP | POLLERR;
284 udpsocks[0] = sockets[0];
288 sockets[1] = socket(PF_INET6, SOCK_DGRAM, 0);
289 if (setsockopt(sockets[1], IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof(int)) != 0)
290 Log_fatal("setsockopt IPv6: %s", strerror(errno));
291 if (bind(sockets[1], (struct sockaddr *) addresses[1], sizeof (struct sockaddr_in6)) < 0) {
292 char *addressString = Util_addressToString(addresses[1]);
293 Log_fatal("bind %s %d: %s", addressString, Util_addressToPort(addresses[1]), strerror(errno));
297 if (setsockopt(sockets[1], IPPROTO_IPV6, IPV6_TCLASS, &val, sizeof(val)) < 0)
298 Log_warn("Server: Failed to set TOS for UDP Socket");
300 if (setsockopt(sockets[1], IPPROTO_IPV6, IPV6_TCLASS, &val, sizeof(val)) < 0)
301 Log_warn("Server: Failed to set TOS for UDP Socket");
303 fcntl(sockets[1], F_SETFL, O_NONBLOCK);
304 pollfds[(hasv4) ? 3 : 1].fd = sockets[1];
305 pollfds[(hasv4) ? 3 : 1].events = POLLIN | POLLHUP | POLLERR;
306 udpsocks[(hasv4) ? 1 : 0] = sockets[1];
313 struct pollfd *pollfds;
317 /* max clients + server sokets + client connecting that will be disconnected */
318 if ((pollfds = calloc((getIntConf(MAX_CLIENTS) + nofServerSocks + 1) , sizeof(struct pollfd))) == NULL)
319 Log_fatal("out of memory");
321 /* Figure out bind address and port */
322 struct sockaddr_storage** addresses = Server_setupAddressesAndPorts();
324 /* Prepare TCP sockets */
325 Server_setupTCPSockets(addresses, pollfds);
327 /* Prepare UDP sockets */
328 Server_setupUDPSockets(addresses, pollfds);
330 Log_info("uMurmur version %s ('%s') protocol version %d.%d.%d",
331 UMURMUR_VERSION, UMURMUR_CODENAME, PROTVER_MAJOR, PROTVER_MINOR, PROTVER_PATCH);
332 Log_info("Visit http://code.google.com/p/umurmur/");
334 /* Main server loop */
335 Server_runLoop(pollfds);
337 /* Disconnect clients and cleanup memory */
338 Client_disconnect_all();
346 void Server_shutdown()
348 shutdown_server = true;