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EQStreamFactory.cpp 11 KB

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  1. /*
  2. EQ2Emulator: Everquest II Server Emulator
  3. Copyright (C) 2007 EQ2EMulator Development Team (http://www.eq2emulator.net)
  4. This file is part of EQ2Emulator.
  5. EQ2Emulator is free software: you can redistribute it and/or modify
  6. it under the terms of the GNU General Public License as published by
  7. the Free Software Foundation, either version 3 of the License, or
  8. (at your option) any later version.
  9. EQ2Emulator is distributed in the hope that it will be useful,
  10. but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12. GNU General Public License for more details.
  13. You should have received a copy of the GNU General Public License
  14. along with EQ2Emulator. If not, see <http://www.gnu.org/licenses/>.
  15. */
  16. #include "EQStreamFactory.h"
  17. #include "Log.h"
  18. #ifdef WIN32
  19. #include <WinSock2.h>
  20. #include <windows.h>
  21. #include <process.h>
  22. #include <io.h>
  23. #include <stdio.h>
  24. #else
  25. #include <sys/socket.h>
  26. #include <netinet/in.h>
  27. #include <sys/select.h>
  28. #include <arpa/inet.h>
  29. #include <netdb.h>
  30. #include <pthread.h>
  31. #endif
  32. #include <fcntl.h>
  33. #include <fstream>
  34. #include <iostream>
  35. #include "op_codes.h"
  36. #include "EQStream.h"
  37. #include "packet_dump.h"
  38. #ifdef WORLD
  39. #include "../WorldServer/client.h"
  40. #endif
  41. using namespace std;
  42. #ifdef WORLD
  43. extern ClientList client_list;
  44. #endif
  45. ThreadReturnType EQStreamFactoryReaderLoop(void *eqfs)
  46. {
  47. if(eqfs){
  48. EQStreamFactory *fs=(EQStreamFactory *)eqfs;
  49. fs->ReaderLoop();
  50. }
  51. THREAD_RETURN(NULL);
  52. }
  53. ThreadReturnType EQStreamFactoryWriterLoop(void *eqfs)
  54. {
  55. if(eqfs){
  56. EQStreamFactory *fs=(EQStreamFactory *)eqfs;
  57. fs->WriterLoop();
  58. }
  59. THREAD_RETURN(NULL);
  60. }
  61. ThreadReturnType EQStreamFactoryCombinePacketLoop(void *eqfs)
  62. {
  63. if(eqfs){
  64. EQStreamFactory *fs=(EQStreamFactory *)eqfs;
  65. fs->CombinePacketLoop();
  66. }
  67. THREAD_RETURN(NULL);
  68. }
  69. EQStreamFactory::EQStreamFactory(EQStreamType type, int port)
  70. {
  71. StreamType=type;
  72. Port=port;
  73. listen_ip_address = 0;
  74. }
  75. void EQStreamFactory::Close()
  76. {
  77. CheckTimeout(true);
  78. Stop();
  79. if (sock != -1) {
  80. #ifdef WIN32
  81. closesocket(sock);
  82. #else
  83. close(sock);
  84. #endif
  85. sock = -1;
  86. }
  87. }
  88. bool EQStreamFactory::Open()
  89. {
  90. struct sockaddr_in address;
  91. #ifndef WIN32
  92. pthread_t t1, t2, t3;
  93. #endif
  94. /* Setup internet address information.
  95. This is used with the bind() call */
  96. memset((char *) &address, 0, sizeof(address));
  97. address.sin_family = AF_INET;
  98. address.sin_port = htons(Port);
  99. #if defined(LOGIN) || defined(MINILOGIN)
  100. if(listen_ip_address)
  101. address.sin_addr.s_addr = inet_addr(listen_ip_address);
  102. else
  103. address.sin_addr.s_addr = htonl(INADDR_ANY);
  104. #else
  105. address.sin_addr.s_addr = htonl(INADDR_ANY);
  106. #endif
  107. /* Setting up UDP port for new clients */
  108. sock = socket(AF_INET, SOCK_DGRAM, 0);
  109. if (sock < 0) {
  110. return false;
  111. }
  112. if (::bind(sock, (struct sockaddr *) &address, sizeof(address)) < 0) {
  113. //close(sock);
  114. sock=-1;
  115. return false;
  116. }
  117. #ifdef WIN32
  118. unsigned long nonblock = 1;
  119. ioctlsocket(sock, FIONBIO, &nonblock);
  120. #else
  121. fcntl(sock, F_SETFL, O_NONBLOCK);
  122. #endif
  123. //moved these because on windows the output was delayed and causing the console window to look bad
  124. #ifdef LOGIN
  125. LogWrite(LOGIN__DEBUG, 0, "Login", "Starting factory Reader");
  126. LogWrite(LOGIN__DEBUG, 0, "Login", "Starting factory Writer");
  127. #elif WORLD
  128. LogWrite(WORLD__DEBUG, 0, "World", "Starting factory Reader");
  129. LogWrite(WORLD__DEBUG, 0, "World", "Starting factory Writer");
  130. #endif
  131. #ifdef WIN32
  132. _beginthread(EQStreamFactoryReaderLoop,0, this);
  133. _beginthread(EQStreamFactoryWriterLoop,0, this);
  134. _beginthread(EQStreamFactoryCombinePacketLoop,0, this);
  135. #else
  136. pthread_create(&t1,NULL,EQStreamFactoryReaderLoop,this);
  137. pthread_create(&t2,NULL,EQStreamFactoryWriterLoop,this);
  138. pthread_create(&t3,NULL,EQStreamFactoryCombinePacketLoop,this);
  139. pthread_detach(t1);
  140. pthread_detach(t2);
  141. pthread_detach(t3);
  142. #endif
  143. return true;
  144. }
  145. EQStream *EQStreamFactory::Pop()
  146. {
  147. if (!NewStreams.size())
  148. return NULL;
  149. EQStream *s=NULL;
  150. //cout << "Pop():Locking MNewStreams" << endl;
  151. MNewStreams.lock();
  152. if (NewStreams.size()) {
  153. s=NewStreams.front();
  154. NewStreams.pop();
  155. s->PutInUse();
  156. }
  157. MNewStreams.unlock();
  158. //cout << "Pop(): Unlocking MNewStreams" << endl;
  159. return s;
  160. }
  161. void EQStreamFactory::Push(EQStream *s)
  162. {
  163. //cout << "Push():Locking MNewStreams" << endl;
  164. MNewStreams.lock();
  165. NewStreams.push(s);
  166. MNewStreams.unlock();
  167. //cout << "Push(): Unlocking MNewStreams" << endl;
  168. }
  169. void EQStreamFactory::ReaderLoop()
  170. {
  171. fd_set readset;
  172. map<string,EQStream *>::iterator stream_itr;
  173. int num;
  174. int length;
  175. unsigned char buffer[2048];
  176. sockaddr_in from;
  177. int socklen=sizeof(sockaddr_in);
  178. timeval sleep_time;
  179. ReaderRunning=true;
  180. while(sock!=-1) {
  181. MReaderRunning.lock();
  182. if (!ReaderRunning)
  183. break;
  184. MReaderRunning.unlock();
  185. FD_ZERO(&readset);
  186. FD_SET(sock,&readset);
  187. sleep_time.tv_sec=30;
  188. sleep_time.tv_usec=0;
  189. if ((num=select(sock+1,&readset,NULL,NULL,&sleep_time))<0) {
  190. // What do we wanna do?
  191. } else if (num==0)
  192. continue;
  193. if (FD_ISSET(sock,&readset)) {
  194. #ifdef WIN32
  195. if ((length=recvfrom(sock,(char*)buffer,sizeof(buffer),0,(struct sockaddr*)&from,(int *)&socklen))<2)
  196. #else
  197. if ((length=recvfrom(sock,buffer,2048,0,(struct sockaddr *)&from,(socklen_t *)&socklen))<2)
  198. #endif
  199. {
  200. // What do we wanna do?
  201. } else {
  202. char temp[25];
  203. sprintf(temp,"%u.%d",ntohl(from.sin_addr.s_addr),ntohs(from.sin_port));
  204. MStreams.lock();
  205. if ((stream_itr=Streams.find(temp))==Streams.end() || buffer[1]==OP_SessionRequest) {
  206. MStreams.unlock();
  207. if (buffer[1]==OP_SessionRequest) {
  208. if(stream_itr != Streams.end() && stream_itr->second)
  209. stream_itr->second->SetState(CLOSED);
  210. EQStream *s=new EQStream(from);
  211. s->SetFactory(this);
  212. s->SetStreamType(StreamType);
  213. Streams[temp]=s;
  214. WriterWork.Signal();
  215. Push(s);
  216. s->Process(buffer,length);
  217. s->SetLastPacketTime(Timer::GetCurrentTime2());
  218. }
  219. } else {
  220. EQStream *curstream = stream_itr->second;
  221. //dont bother processing incoming packets for closed connections
  222. if(curstream->CheckClosed())
  223. curstream = NULL;
  224. else
  225. curstream->PutInUse();
  226. MStreams.unlock();
  227. if(curstream) {
  228. curstream->Process(buffer,length);
  229. curstream->SetLastPacketTime(Timer::GetCurrentTime2());
  230. curstream->ReleaseFromUse();
  231. }
  232. }
  233. }
  234. }
  235. }
  236. }
  237. void EQStreamFactory::CheckTimeout(bool remove_all)
  238. {
  239. //lock streams the entire time were checking timeouts, it should be fast.
  240. MStreams.lock();
  241. unsigned long now=Timer::GetCurrentTime2();
  242. map<string,EQStream *>::iterator stream_itr;
  243. for(stream_itr=Streams.begin();stream_itr!=Streams.end();) {
  244. EQStream *s = stream_itr->second;
  245. EQStreamState state = s->GetState();
  246. if (state==CLOSING && !s->HasOutgoingData()) {
  247. stream_itr->second->SetState(CLOSED);
  248. state = CLOSED;
  249. } else if (s->CheckTimeout(now, STREAM_TIMEOUT)) {
  250. const char* stateString;
  251. switch (state){
  252. case ESTABLISHED:
  253. stateString = "Established";
  254. break;
  255. case CLOSING:
  256. stateString = "Closing";
  257. break;
  258. case CLOSED:
  259. stateString = "Closed";
  260. break;
  261. default:
  262. stateString = "Unknown";
  263. break;
  264. }
  265. LogWrite(WORLD__DEBUG, 0, "World", "Timeout up!, state=%s", stateString);
  266. if (state==ESTABLISHED) {
  267. s->Close();
  268. } else if (state == CLOSING) {
  269. //if we time out in the closing state, just give up
  270. s->SetState(CLOSED);
  271. state = CLOSED;
  272. }
  273. }
  274. //not part of the else so we check it right away on state change
  275. if (remove_all || state==CLOSED) {
  276. if (!remove_all && s->getTimeoutDelays()<2) {
  277. s->addTimeoutDelay();
  278. //give it a little time for everybody to finish with it
  279. } else {
  280. //everybody is done, we can delete it now
  281. #ifdef LOGIN
  282. LogWrite(LOGIN__DEBUG, 0, "Login", "Removing connection...");
  283. #else
  284. LogWrite(WORLD__DEBUG, 0, "World", "Removing connection...");
  285. #endif
  286. map<string,EQStream *>::iterator temp=stream_itr;
  287. stream_itr++;
  288. //let whoever has the stream outside delete it
  289. #ifdef WORLD
  290. client_list.RemoveConnection(temp->second);
  291. #endif
  292. delete temp->second;
  293. Streams.erase(temp);
  294. continue;
  295. }
  296. }
  297. stream_itr++;
  298. }
  299. MStreams.unlock();
  300. }
  301. void EQStreamFactory::CombinePacketLoop(){
  302. deque<EQStream*> combine_que;
  303. CombinePacketRunning = true;
  304. bool packets_waiting = false;
  305. while(sock!=-1) {
  306. if (!CombinePacketRunning)
  307. break;
  308. MStreams.lock();
  309. map<string,EQStream *>::iterator stream_itr;
  310. for(stream_itr=Streams.begin();stream_itr!=Streams.end();stream_itr++) {
  311. if(!stream_itr->second){
  312. continue;
  313. }
  314. if(stream_itr->second->combine_timer && stream_itr->second->combine_timer->Check())
  315. combine_que.push_back(stream_itr->second);
  316. }
  317. EQStream* stream = 0;
  318. packets_waiting = false;
  319. while(combine_que.size()){
  320. stream = combine_que.front();
  321. if(stream->CheckActive()){
  322. if(!stream->CheckCombineQueue())
  323. packets_waiting = true;
  324. }
  325. combine_que.pop_front();
  326. }
  327. MStreams.unlock();
  328. if(!packets_waiting)
  329. Sleep(25);
  330. Sleep(1);
  331. }
  332. }
  333. void EQStreamFactory::WriterLoop()
  334. {
  335. map<string,EQStream *>::iterator stream_itr;
  336. vector<EQStream *> wants_write;
  337. vector<EQStream *>::iterator cur,end;
  338. deque<EQStream*> resend_que;
  339. bool decay=false;
  340. uint32 stream_count;
  341. Timer DecayTimer(20);
  342. WriterRunning=true;
  343. DecayTimer.Enable();
  344. while(sock!=-1) {
  345. Timer::SetCurrentTime();
  346. //if (!havework) {
  347. //WriterWork.Wait();
  348. //}
  349. MWriterRunning.lock();
  350. if (!WriterRunning)
  351. break;
  352. MWriterRunning.unlock();
  353. wants_write.clear();
  354. decay=DecayTimer.Check();
  355. //copy streams into a seperate list so we dont have to keep
  356. //MStreams locked while we are writting
  357. MStreams.lock();
  358. for(stream_itr=Streams.begin();stream_itr!=Streams.end();stream_itr++) {
  359. // If it's time to decay the bytes sent, then let's do it before we try to write
  360. if(!stream_itr->second){
  361. Streams.erase(stream_itr);
  362. break;
  363. }
  364. if (decay)
  365. stream_itr->second->Decay();
  366. if (stream_itr->second->HasOutgoingData()) {
  367. stream_itr->second->PutInUse();
  368. wants_write.push_back(stream_itr->second);
  369. }
  370. if(stream_itr->second->resend_que_timer->Check())
  371. resend_que.push_back(stream_itr->second);
  372. }
  373. MStreams.unlock();
  374. //do the actual writes
  375. cur = wants_write.begin();
  376. end = wants_write.end();
  377. for(; cur != end; cur++) {
  378. (*cur)->Write(sock);
  379. (*cur)->ReleaseFromUse();
  380. }
  381. while(resend_que.size()){
  382. resend_que.front()->CheckResend(sock);
  383. resend_que.pop_front();
  384. }
  385. Sleep(10);
  386. MStreams.lock();
  387. stream_count=Streams.size();
  388. MStreams.unlock();
  389. if (!stream_count) {
  390. //cout << "No streams, waiting on condition" << endl;
  391. WriterWork.Wait();
  392. //cout << "Awake from condition, must have a stream now" << endl;
  393. }
  394. }
  395. }