platformNet.cpp 57 KB

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  1. //-----------------------------------------------------------------------------
  2. // Copyright (c) 2012 GarageGames, LLC
  3. //
  4. // Permission is hereby granted, free of charge, to any person obtaining a copy
  5. // of this software and associated documentation files (the "Software"), to
  6. // deal in the Software without restriction, including without limitation the
  7. // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  8. // sell copies of the Software, and to permit persons to whom the Software is
  9. // furnished to do so, subject to the following conditions:
  10. //
  11. // The above copyright notice and this permission notice shall be included in
  12. // all copies or substantial portions of the Software.
  13. //
  14. // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15. // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16. // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  17. // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18. // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19. // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  20. // IN THE SOFTWARE.
  21. //-----------------------------------------------------------------------------
  22. #include "platform/platformNet.h"
  23. #include "platform/threads/mutex.h"
  24. #include "core/strings/stringFunctions.h"
  25. #include "core/util/hashFunction.h"
  26. #include "console/consoleTypes.h"
  27. // jamesu - debug DNS
  28. //#define TORQUE_DEBUG_LOOKUPS
  29. #if defined (TORQUE_OS_WIN)
  30. #define TORQUE_USE_WINSOCK
  31. #include <errno.h>
  32. #include <ws2tcpip.h>
  33. #ifndef EINPROGRESS
  34. #define EINPROGRESS WSAEINPROGRESS
  35. #endif // EINPROGRESS
  36. #define ioctl ioctlsocket
  37. typedef S32 socklen_t;
  38. #elif defined ( TORQUE_OS_MAC )
  39. #include <unistd.h>
  40. #include <sys/types.h>
  41. #include <sys/socket.h>
  42. #include <sys/poll.h>
  43. #include <arpa/inet.h>
  44. #include <netdb.h>
  45. #include <netinet/in.h>
  46. #include <errno.h>
  47. #include <sys/ioctl.h>
  48. #include <net/if.h>
  49. typedef sockaddr_in SOCKADDR_IN;
  50. typedef sockaddr * PSOCKADDR;
  51. typedef sockaddr SOCKADDR;
  52. typedef in_addr IN_ADDR;
  53. typedef int SOCKET;
  54. #define INVALID_SOCKET -1
  55. #define SOCKET_ERROR -1
  56. #define closesocket close
  57. #elif defined( TORQUE_OS_LINUX )
  58. #include <unistd.h>
  59. #include <sys/types.h>
  60. #include <sys/socket.h>
  61. #include <sys/poll.h>
  62. #include <arpa/inet.h>
  63. #include <netdb.h>
  64. #include <netinet/in.h>
  65. #include <errno.h>
  66. #include <sys/ioctl.h>
  67. #include <net/if.h>
  68. typedef sockaddr_in SOCKADDR_IN;
  69. typedef sockaddr_in6 SOCKADDR_IN6;
  70. typedef sockaddr * PSOCKADDR;
  71. typedef sockaddr SOCKADDR;
  72. typedef in_addr IN_ADDR;
  73. typedef in6_addr IN6_ADDR;
  74. typedef int SOCKET;
  75. #define INVALID_SOCKET -1
  76. #define SOCKET_ERROR -1
  77. #define closesocket close
  78. #endif
  79. #if defined(TORQUE_USE_WINSOCK)
  80. static const char* strerror_wsa( S32 code )
  81. {
  82. switch( code )
  83. {
  84. #define E( name ) case name: return #name;
  85. E( WSANOTINITIALISED );
  86. E( WSAENETDOWN );
  87. E( WSAEADDRINUSE );
  88. E( WSAEINPROGRESS );
  89. E( WSAEALREADY );
  90. E( WSAEADDRNOTAVAIL );
  91. E( WSAEAFNOSUPPORT );
  92. E( WSAEFAULT );
  93. E( WSAEINVAL );
  94. E( WSAEISCONN );
  95. E( WSAENETUNREACH );
  96. E( WSAEHOSTUNREACH );
  97. E( WSAENOBUFS );
  98. E( WSAENOTSOCK );
  99. E( WSAETIMEDOUT );
  100. E( WSAEWOULDBLOCK );
  101. E( WSAEACCES );
  102. #undef E
  103. default:
  104. return "Unknown";
  105. }
  106. }
  107. #endif
  108. #include "core/util/tVector.h"
  109. #include "platform/platformNetAsync.h"
  110. #include "console/console.h"
  111. #include "core/util/journal/process.h"
  112. #include "core/util/journal/journal.h"
  113. NetSocket NetSocket::INVALID = NetSocket::fromHandle(-1);
  114. template<class T> class ReservedSocketList
  115. {
  116. public:
  117. struct EntryType
  118. {
  119. T value;
  120. bool used;
  121. EntryType() : value(-1), used(false) { ; }
  122. bool operator==(const EntryType &e1)
  123. {
  124. return value == e1.value && used == e1.used;
  125. }
  126. bool operator!=(const EntryType &e1)
  127. {
  128. return !(value == e1.value && used == e1.used);
  129. }
  130. };
  131. Vector<EntryType> mSocketList;
  132. Mutex *mMutex;
  133. ReservedSocketList()
  134. {
  135. mMutex = new Mutex;
  136. }
  137. ~ReservedSocketList()
  138. {
  139. delete mMutex;
  140. }
  141. inline void modify() { Mutex::lockMutex(mMutex); }
  142. inline void endModify() { Mutex::unlockMutex(mMutex); }
  143. NetSocket reserve(SOCKET reserveId = -1, bool doLock = true);
  144. void remove(NetSocket socketToRemove, bool doLock = true);
  145. T activate(NetSocket socketToActivate, int family, bool useUDP, bool clearOnFail = false);
  146. T resolve(NetSocket socketToResolve);
  147. };
  148. const SOCKET InvalidSocketHandle = -1;
  149. static void IPSocketToNetAddress(const struct sockaddr_in *sockAddr, NetAddress *address);
  150. static void IPSocket6ToNetAddress(const struct sockaddr_in6 *sockAddr, NetAddress *address);
  151. namespace PlatformNetState
  152. {
  153. static S32 initCount = 0;
  154. static const S32 defaultPort = 28000;
  155. static S32 netPort = 0;
  156. static NetSocket udpSocket = NetSocket::INVALID;
  157. static NetSocket udp6Socket = NetSocket::INVALID;
  158. static NetSocket multicast6Socket = NetSocket::INVALID;
  159. static ipv6_mreq multicast6Group;
  160. static ReservedSocketList<SOCKET> smReservedSocketList;
  161. Net::Error getLastError()
  162. {
  163. #if defined(TORQUE_USE_WINSOCK)
  164. S32 err = WSAGetLastError();
  165. switch (err)
  166. {
  167. case 0:
  168. return Net::NoError;
  169. case WSAEWOULDBLOCK:
  170. return Net::WouldBlock;
  171. default:
  172. return Net::UnknownError;
  173. }
  174. #else
  175. int theError = errno;
  176. if (errno == EAGAIN)
  177. return Net::WouldBlock;
  178. if (errno == 0)
  179. return Net::NoError;
  180. if (errno == EINPROGRESS)
  181. return Net::WouldBlock;
  182. return Net::UnknownError;
  183. #endif
  184. }
  185. S32 getDefaultGameProtocol()
  186. {
  187. // we turn off VDP in non-release builds because VDP does not support broadcast packets
  188. // which are required for LAN queries (PC->Xbox connectivity). The wire protocol still
  189. // uses the VDP packet structure, though.
  190. S32 protocol = IPPROTO_UDP;
  191. #ifdef TORQUE_DISABLE_PC_CONNECTIVITY
  192. // Xbox uses a VDP (voice/data protocol) socket for networking
  193. protocol = IPPROTO_VDP;
  194. useVDP = true;
  195. #endif
  196. return protocol;
  197. }
  198. struct addrinfo* pickAddressByProtocol(struct addrinfo* addr, int protocol)
  199. {
  200. for (addr; addr != NULL; addr = addr->ai_next)
  201. {
  202. if (addr->ai_family == protocol)
  203. return addr;
  204. }
  205. return NULL;
  206. }
  207. /// Extracts core address parts from an address string. Returns false if it's malformed.
  208. bool extractAddressParts(const char *addressString, char outAddress[256], int &outPort, int &outFamily)
  209. {
  210. outPort = 0;
  211. outFamily = AF_UNSPEC;
  212. if (!dStrnicmp(addressString, "ipx:", 4))
  213. // ipx support deprecated
  214. return false;
  215. if (!dStrnicmp(addressString, "ip:", 3))
  216. {
  217. addressString += 3; // eat off the ip:
  218. outFamily = AF_INET;
  219. }
  220. else if (!dStrnicmp(addressString, "ip6:", 4))
  221. {
  222. addressString += 4; // eat off the ip6:
  223. outFamily = AF_INET6;
  224. }
  225. if (strlen(addressString) > 255)
  226. return false;
  227. char *portString = NULL;
  228. if (addressString[0] == '[')
  229. {
  230. // Must be ipv6 notation
  231. dStrcpy(outAddress, addressString+1, 256);
  232. addressString = outAddress;
  233. portString = dStrchr(outAddress, ']');
  234. if (portString)
  235. {
  236. // Sort out the :port after the ]
  237. *portString++ = '\0';
  238. if (*portString != ':')
  239. {
  240. portString = NULL;
  241. }
  242. else
  243. {
  244. *portString++ = '\0';
  245. }
  246. }
  247. if (outFamily == AF_UNSPEC)
  248. {
  249. outFamily = AF_INET6;
  250. }
  251. }
  252. else
  253. {
  254. dStrcpy(outAddress, addressString, 256);
  255. addressString = outAddress;
  256. // Check to see if we have multiple ":" which would indicate this is an ipv6 address
  257. char* scan = outAddress;
  258. int colonCount = 0;
  259. while (*scan != '\0' && colonCount < 2)
  260. {
  261. if (*scan++ == ':')
  262. colonCount++;
  263. }
  264. if (colonCount <= 1)
  265. {
  266. // either ipv4 or host
  267. portString = dStrchr(outAddress, ':');
  268. if (portString)
  269. {
  270. *portString++ = '\0';
  271. }
  272. }
  273. else if (outFamily == AF_UNSPEC)
  274. {
  275. // Must be ipv6
  276. outFamily = AF_INET6;
  277. }
  278. }
  279. if (portString)
  280. {
  281. outPort = dAtoi(portString);
  282. }
  283. return true;
  284. }
  285. Net::Error getSocketAddress(SOCKET socketFd, int requiredFamily, NetAddress *outAddress)
  286. {
  287. Net::Error error = Net::UnknownError;
  288. if (requiredFamily == AF_INET)
  289. {
  290. sockaddr_in ipAddr;
  291. socklen_t len = sizeof(ipAddr);
  292. if (getsockname(socketFd, (struct sockaddr*)&ipAddr, &len) >= 0)
  293. {
  294. IPSocketToNetAddress(&ipAddr, outAddress);
  295. error = Net::NoError;
  296. }
  297. else
  298. {
  299. error = getLastError();
  300. }
  301. }
  302. else if (requiredFamily == AF_INET6)
  303. {
  304. sockaddr_in6 ipAddr;
  305. socklen_t len = sizeof(ipAddr);
  306. if (getsockname(socketFd, (struct sockaddr*)&ipAddr, &len) >= 0)
  307. {
  308. IPSocket6ToNetAddress(&ipAddr, outAddress);
  309. error = Net::NoError;
  310. }
  311. else
  312. {
  313. error = getLastError();
  314. }
  315. }
  316. return error;
  317. }
  318. };
  319. template<class T> NetSocket ReservedSocketList<T>::reserve(SOCKET reserveId, bool doLock)
  320. {
  321. MutexHandle handle;
  322. if (doLock)
  323. {
  324. handle.lock(mMutex, true);
  325. }
  326. S32 idx = mSocketList.find_next(EntryType());
  327. if (idx == -1)
  328. {
  329. EntryType entry;
  330. entry.value = reserveId;
  331. entry.used = true;
  332. mSocketList.push_back(entry);
  333. return NetSocket::fromHandle(mSocketList.size() - 1);
  334. }
  335. else
  336. {
  337. EntryType &entry = mSocketList[idx];
  338. entry.used = true;
  339. entry.value = reserveId;
  340. }
  341. return NetSocket::fromHandle(idx);
  342. }
  343. template<class T> void ReservedSocketList<T>::remove(NetSocket socketToRemove, bool doLock)
  344. {
  345. MutexHandle handle;
  346. if (doLock)
  347. {
  348. handle.lock(mMutex, true);
  349. }
  350. if ((U32)socketToRemove.getHandle() >= (U32)mSocketList.size())
  351. return;
  352. mSocketList[socketToRemove.getHandle()] = EntryType();
  353. }
  354. template<class T> T ReservedSocketList<T>::activate(NetSocket socketToActivate, int family, bool useUDP, bool clearOnFail)
  355. {
  356. MutexHandle h;
  357. h.lock(mMutex, true);
  358. int typeID = useUDP ? SOCK_DGRAM : SOCK_STREAM;
  359. int protocol = useUDP ? PlatformNetState::getDefaultGameProtocol() : 0;
  360. if ((U32)socketToActivate.getHandle() >= (U32)mSocketList.size())
  361. return -1;
  362. EntryType &entry = mSocketList[socketToActivate.getHandle()];
  363. if (!entry.used)
  364. return -1;
  365. T socketFd = entry.value;
  366. if (socketFd == -1)
  367. {
  368. socketFd = ::socket(family, typeID, protocol);
  369. if (socketFd == InvalidSocketHandle)
  370. {
  371. if (clearOnFail)
  372. {
  373. remove(socketToActivate, false);
  374. }
  375. return InvalidSocketHandle;
  376. }
  377. else
  378. {
  379. entry.used = true;
  380. entry.value = socketFd;
  381. return socketFd;
  382. }
  383. }
  384. return socketFd;
  385. }
  386. template<class T> T ReservedSocketList<T>::resolve(NetSocket socketToResolve)
  387. {
  388. MutexHandle h;
  389. h.lock(mMutex, true);
  390. if ((U32)socketToResolve.getHandle() >= (U32)mSocketList.size())
  391. return -1;
  392. EntryType &entry = mSocketList[socketToResolve.getHandle()];
  393. return entry.used ? entry.value : -1;
  394. }
  395. ConnectionNotifyEvent* Net::smConnectionNotify = NULL;
  396. ConnectionAcceptedEvent* Net::smConnectionAccept = NULL;
  397. ConnectionReceiveEvent* Net::smConnectionReceive = NULL;
  398. PacketReceiveEvent* Net::smPacketReceive = NULL;
  399. ConnectionNotifyEvent& Net::getConnectionNotifyEvent()
  400. {
  401. return *smConnectionNotify;
  402. }
  403. ConnectionAcceptedEvent& Net::getConnectionAcceptedEvent()
  404. {
  405. return *smConnectionAccept;
  406. }
  407. ConnectionReceiveEvent& Net::getConnectionReceiveEvent()
  408. {
  409. return *smConnectionReceive;
  410. }
  411. PacketReceiveEvent& Net::getPacketReceiveEvent()
  412. {
  413. return *smPacketReceive;
  414. }
  415. // Multicast stuff
  416. bool Net::smMulticastEnabled = true;
  417. //
  418. // Protocol Stuff
  419. bool Net::smIpv4Enabled = true;
  420. bool Net::smIpv6Enabled = false;
  421. //
  422. // the Socket structure helps us keep track of the
  423. // above states
  424. struct PolledSocket
  425. {
  426. // local enum for socket states for polled sockets
  427. enum SocketState
  428. {
  429. InvalidState,
  430. Connected,
  431. ConnectionPending,
  432. Listening,
  433. NameLookupRequired
  434. };
  435. PolledSocket()
  436. {
  437. fd = -1;
  438. handleFd = NetSocket::INVALID;
  439. state = InvalidState;
  440. remoteAddr[0] = 0;
  441. remotePort = -1;
  442. }
  443. SOCKET fd;
  444. NetSocket handleFd;
  445. S32 state;
  446. char remoteAddr[256];
  447. S32 remotePort;
  448. };
  449. // list of polled sockets
  450. static Vector<PolledSocket*> gPolledSockets( __FILE__, __LINE__ );
  451. static PolledSocket* addPolledSocket(NetSocket handleFd, SOCKET fd, S32 state,
  452. char* remoteAddr = NULL, S32 port = -1)
  453. {
  454. PolledSocket* sock = new PolledSocket();
  455. sock->fd = fd;
  456. sock->handleFd = handleFd;
  457. sock->state = state;
  458. if (remoteAddr)
  459. dStrcpy(sock->remoteAddr, remoteAddr, 256);
  460. if (port != -1)
  461. sock->remotePort = port;
  462. gPolledSockets.push_back(sock);
  463. return sock;
  464. }
  465. bool netSocketWaitForWritable(NetSocket handleFd, S32 timeoutMs)
  466. {
  467. fd_set writefds;
  468. timeval timeout;
  469. SOCKET socketFd = PlatformNetState::smReservedSocketList.resolve(handleFd);
  470. FD_ZERO( &writefds );
  471. FD_SET( socketFd, &writefds );
  472. timeout.tv_sec = timeoutMs / 1000;
  473. timeout.tv_usec = ( timeoutMs % 1000 ) * 1000;
  474. if( select(socketFd + 1, NULL, &writefds, NULL, &timeout) > 0 )
  475. return true;
  476. return false;
  477. }
  478. bool Net::init()
  479. {
  480. #if defined(TORQUE_USE_WINSOCK)
  481. if(!PlatformNetState::initCount)
  482. {
  483. WSADATA stWSAData;
  484. AssertISV( !WSAStartup( 0x0101, &stWSAData ), "Net::init - failed to init WinSock!" );
  485. //logprintf("Winsock initialization %s", success ? "succeeded." : "failed!");
  486. }
  487. #endif
  488. PlatformNetState::initCount++;
  489. smConnectionNotify = new ConnectionNotifyEvent();
  490. smConnectionAccept = new ConnectionAcceptedEvent();
  491. smConnectionReceive = new ConnectionReceiveEvent();
  492. smPacketReceive = new PacketReceiveEvent();
  493. Process::notify(&Net::process, PROCESS_NET_ORDER);
  494. return(true);
  495. }
  496. void Net::shutdown()
  497. {
  498. Process::remove(&Net::process);
  499. while (gPolledSockets.size() > 0)
  500. {
  501. if (gPolledSockets[0] == NULL)
  502. gPolledSockets.erase(gPolledSockets.begin());
  503. else
  504. closeConnectTo(gPolledSockets[0]->handleFd);
  505. }
  506. closePort();
  507. PlatformNetState::initCount--;
  508. // Destroy event handlers
  509. delete smConnectionNotify;
  510. delete smConnectionAccept;
  511. delete smConnectionReceive;
  512. delete smPacketReceive;
  513. #if defined(TORQUE_USE_WINSOCK)
  514. if(!PlatformNetState::initCount)
  515. {
  516. WSACleanup();
  517. }
  518. #endif
  519. }
  520. // ipv4 version of name routines
  521. static void NetAddressToIPSocket(const NetAddress *address, struct sockaddr_in *sockAddr)
  522. {
  523. dMemset(sockAddr, 0, sizeof(struct sockaddr_in));
  524. sockAddr->sin_family = AF_INET;
  525. sockAddr->sin_port = htons(address->port);
  526. #if defined(TORQUE_OS_BSD) || defined(TORQUE_OS_MAC)
  527. sockAddr->sin_len = sizeof(struct sockaddr_in);
  528. #endif
  529. if (address->type == NetAddress::IPBroadcastAddress)
  530. {
  531. sockAddr->sin_addr.s_addr = htonl(INADDR_BROADCAST);
  532. }
  533. else
  534. {
  535. dMemcpy(&sockAddr->sin_addr, &address->address.ipv4.netNum[0], 4);
  536. }
  537. }
  538. static void IPSocketToNetAddress(const struct sockaddr_in *sockAddr, NetAddress *address)
  539. {
  540. address->type = NetAddress::IPAddress;
  541. address->port = ntohs(sockAddr->sin_port);
  542. dMemcpy(&address->address.ipv4.netNum[0], &sockAddr->sin_addr, 4);
  543. }
  544. // ipv6 version of name routines
  545. static void NetAddressToIPSocket6(const NetAddress *address, struct sockaddr_in6 *sockAddr)
  546. {
  547. dMemset(sockAddr, 0, sizeof(struct sockaddr_in6));
  548. #ifdef SIN6_LEN
  549. sockAddr->sin6_len = sizeof(struct sockaddr_in6);
  550. #endif
  551. sockAddr->sin6_family = AF_INET6;
  552. sockAddr->sin6_port = ntohs(address->port);
  553. if (address->type == NetAddress::IPV6MulticastAddress)
  554. {
  555. sockAddr->sin6_addr = PlatformNetState::multicast6Group.ipv6mr_multiaddr;
  556. sockAddr->sin6_scope_id = PlatformNetState::multicast6Group.ipv6mr_interface;
  557. }
  558. else
  559. {
  560. sockAddr->sin6_flowinfo = address->address.ipv6.netFlow;
  561. sockAddr->sin6_scope_id = address->address.ipv6.netScope;
  562. dMemcpy(&sockAddr->sin6_addr, address->address.ipv6.netNum, sizeof(address->address.ipv6.netNum));
  563. }
  564. }
  565. static void IPSocket6ToNetAddress(const struct sockaddr_in6 *sockAddr, NetAddress *address)
  566. {
  567. address->type = NetAddress::IPV6Address;
  568. address->port = ntohs(sockAddr->sin6_port);
  569. dMemcpy(address->address.ipv6.netNum, &sockAddr->sin6_addr, sizeof(address->address.ipv6.netNum));
  570. address->address.ipv6.netFlow = sockAddr->sin6_flowinfo;
  571. address->address.ipv6.netScope = sockAddr->sin6_scope_id;
  572. }
  573. //
  574. NetSocket Net::openListenPort(U16 port, NetAddress::Type addressType)
  575. {
  576. if(Journal::IsPlaying())
  577. {
  578. U32 ret;
  579. Journal::Read(&ret);
  580. return NetSocket::fromHandle(ret);
  581. }
  582. Net::Error error = NoError;
  583. NetAddress address;
  584. if (Net::getListenAddress(addressType, &address) != Net::NoError)
  585. error = Net::WrongProtocolType;
  586. NetSocket handleFd = NetSocket::INVALID;
  587. SOCKET sockId = InvalidSocketHandle;
  588. if (error == NoError)
  589. {
  590. handleFd = openSocket();
  591. sockId = PlatformNetState::smReservedSocketList.activate(handleFd, address.type == NetAddress::IPAddress ? AF_INET : AF_INET6, false, true);
  592. }
  593. if (error == NoError && (handleFd == NetSocket::INVALID || sockId == InvalidSocketHandle))
  594. {
  595. Con::errorf("Unable to open listen socket: %s", strerror(errno));
  596. error = NotASocket;
  597. handleFd = NetSocket::INVALID;
  598. }
  599. if (error == NoError)
  600. {
  601. address.port = port;
  602. error = bindAddress(address, handleFd, false);
  603. if (error != NoError)
  604. {
  605. Con::errorf("Unable to bind port %d: %s", port, strerror(errno));
  606. closeSocket(handleFd);
  607. handleFd = NetSocket::INVALID;
  608. }
  609. }
  610. if (error == NoError)
  611. {
  612. error = listen(handleFd, 4);
  613. if (error != NoError)
  614. {
  615. Con::errorf("Unable to listen on port %d: %s", port, strerror(errno));
  616. closeSocket(handleFd);
  617. handleFd = NetSocket::INVALID;
  618. }
  619. }
  620. if (error == NoError)
  621. {
  622. setBlocking(handleFd, false);
  623. addPolledSocket(handleFd, sockId, PolledSocket::Listening);
  624. }
  625. if(Journal::IsRecording())
  626. Journal::Write(U32(handleFd.getHandle()));
  627. return handleFd;
  628. }
  629. NetSocket Net::openConnectTo(const char *addressString)
  630. {
  631. if (Journal::IsPlaying())
  632. {
  633. U32 ret;
  634. Journal::Read(&ret);
  635. return NetSocket::fromHandle(ret);
  636. }
  637. NetAddress address;
  638. NetSocket handleFd = NetSocket::INVALID;
  639. Net::Error error = NoError;
  640. error = Net::stringToAddress(addressString, &address, false);
  641. if (error == NoError && address.type != NetAddress::IPAddress && address.type != NetAddress::IPV6Address)
  642. {
  643. error = Net::WrongProtocolType;
  644. }
  645. // Open socket
  646. if (error == NoError || error == NeedHostLookup)
  647. {
  648. handleFd = openSocket();
  649. }
  650. // Attempt to connect or queue a lookup
  651. if (error == NoError && address.type == NetAddress::IPAddress)
  652. {
  653. sockaddr_in ipAddr;
  654. NetAddressToIPSocket(&address, &ipAddr);
  655. SOCKET socketFd = PlatformNetState::smReservedSocketList.activate(handleFd, AF_INET, false, true);
  656. if (socketFd != InvalidSocketHandle)
  657. {
  658. setBlocking(handleFd, false);
  659. if (::connect(socketFd, (struct sockaddr *)&ipAddr, sizeof(ipAddr)) == -1)
  660. {
  661. Net::Error err = PlatformNetState::getLastError();
  662. if (err != Net::WouldBlock)
  663. {
  664. Con::errorf("Error connecting to %s: %u",
  665. addressString, err);
  666. closeSocket(handleFd);
  667. handleFd = NetSocket::INVALID;
  668. }
  669. }
  670. }
  671. else
  672. {
  673. PlatformNetState::smReservedSocketList.remove(handleFd);
  674. handleFd = NetSocket::INVALID;
  675. }
  676. if (handleFd != NetSocket::INVALID)
  677. {
  678. // add this socket to our list of polled sockets
  679. addPolledSocket(handleFd, socketFd, PolledSocket::ConnectionPending);
  680. }
  681. }
  682. else if (error == NoError && address.type == NetAddress::IPV6Address)
  683. {
  684. sockaddr_in6 ipAddr6;
  685. NetAddressToIPSocket6(&address, &ipAddr6);
  686. SOCKET socketFd = PlatformNetState::smReservedSocketList.activate(handleFd, AF_INET6, false, true);
  687. if (socketFd != InvalidSocketHandle)
  688. {
  689. setBlocking(handleFd, false);
  690. if (::connect(socketFd, (struct sockaddr *)&ipAddr6, sizeof(ipAddr6)) == -1)
  691. {
  692. Net::Error err = PlatformNetState::getLastError();
  693. if (err != Net::WouldBlock)
  694. {
  695. Con::errorf("Error connecting to %s: %u",
  696. addressString, err);
  697. closeSocket(handleFd);
  698. handleFd = NetSocket::INVALID;
  699. }
  700. }
  701. }
  702. else
  703. {
  704. PlatformNetState::smReservedSocketList.remove(handleFd);
  705. handleFd = NetSocket::INVALID;
  706. }
  707. if (handleFd != NetSocket::INVALID)
  708. {
  709. // add this socket to our list of polled sockets
  710. addPolledSocket(handleFd, socketFd, PolledSocket::ConnectionPending);
  711. }
  712. }
  713. else if (error == Net::NeedHostLookup)
  714. {
  715. // need to do an asynchronous name lookup. first, add the socket
  716. // to the polled list
  717. char addr[256];
  718. int port = 0;
  719. int actualFamily = AF_UNSPEC;
  720. if (PlatformNetState::extractAddressParts(addressString, addr, port, actualFamily))
  721. {
  722. addPolledSocket(handleFd, InvalidSocketHandle, PolledSocket::NameLookupRequired, addr, port);
  723. // queue the lookup
  724. gNetAsync.queueLookup(addressString, handleFd);
  725. }
  726. else
  727. {
  728. closeSocket(handleFd);
  729. handleFd = NetSocket::INVALID;
  730. }
  731. }
  732. else
  733. {
  734. closeSocket(handleFd);
  735. handleFd = NetSocket::INVALID;
  736. }
  737. if (Journal::IsRecording())
  738. Journal::Write(U32(handleFd.getHandle()));
  739. return handleFd;
  740. }
  741. void Net::closeConnectTo(NetSocket handleFd)
  742. {
  743. if(Journal::IsPlaying())
  744. return;
  745. // if this socket is in the list of polled sockets, remove it
  746. for (S32 i = 0; i < gPolledSockets.size(); ++i)
  747. {
  748. if (gPolledSockets[i] && gPolledSockets[i]->handleFd == handleFd)
  749. {
  750. delete gPolledSockets[i];
  751. gPolledSockets[i] = NULL;
  752. break;
  753. }
  754. }
  755. closeSocket(handleFd);
  756. }
  757. Net::Error Net::sendtoSocket(NetSocket handleFd, const U8 *buffer, S32 bufferSize, S32 *outBufferWritten)
  758. {
  759. if(Journal::IsPlaying())
  760. {
  761. U32 e;
  762. S32 outBytes;
  763. Journal::Read(&e);
  764. Journal::Read(&outBytes);
  765. if (outBufferWritten)
  766. *outBufferWritten = outBytes;
  767. return (Net::Error) e;
  768. }
  769. S32 outBytes = 0;
  770. Net::Error e = send(handleFd, buffer, bufferSize, &outBytes);
  771. if (Journal::IsRecording())
  772. {
  773. Journal::Write(U32(e));
  774. Journal::Write(outBytes);
  775. }
  776. if (outBufferWritten)
  777. *outBufferWritten = outBytes;
  778. return e;
  779. }
  780. bool Net::openPort(S32 port, bool doBind)
  781. {
  782. if (PlatformNetState::udpSocket != NetSocket::INVALID)
  783. {
  784. closeSocket(PlatformNetState::udpSocket);
  785. PlatformNetState::udpSocket = NetSocket::INVALID;
  786. }
  787. if (PlatformNetState::udp6Socket != NetSocket::INVALID)
  788. {
  789. closeSocket(PlatformNetState::udp6Socket);
  790. PlatformNetState::udp6Socket = NetSocket::INVALID;
  791. }
  792. // Update prefs
  793. Net::smMulticastEnabled = Con::getBoolVariable("pref::Net::Multicast6Enabled", true);
  794. Net::smIpv4Enabled = Con::getBoolVariable("pref::Net::IPV4Enabled", true);
  795. Net::smIpv6Enabled = Con::getBoolVariable("pref::Net::IPV6Enabled", false);
  796. // we turn off VDP in non-release builds because VDP does not support broadcast packets
  797. // which are required for LAN queries (PC->Xbox connectivity). The wire protocol still
  798. // uses the VDP packet structure, though.
  799. S32 protocol = PlatformNetState::getDefaultGameProtocol();
  800. SOCKET socketFd = InvalidSocketHandle;
  801. NetAddress address;
  802. NetAddress listenAddress;
  803. char listenAddressStr[256];
  804. if (Net::smIpv4Enabled)
  805. {
  806. if (Net::getListenAddress(NetAddress::IPAddress, &address) == Net::NoError)
  807. {
  808. address.port = port;
  809. socketFd = ::socket(AF_INET, SOCK_DGRAM, protocol);
  810. if (socketFd != InvalidSocketHandle)
  811. {
  812. PlatformNetState::udpSocket = PlatformNetState::smReservedSocketList.reserve(socketFd);
  813. Net::Error error = NoError;
  814. if (doBind)
  815. {
  816. error = bindAddress(address, PlatformNetState::udpSocket, true);
  817. }
  818. if (error == NoError)
  819. error = setBufferSize(PlatformNetState::udpSocket, 32768 * 8);
  820. #ifndef TORQUE_DISABLE_PC_CONNECTIVITY
  821. if (error == NoError)
  822. error = setBroadcast(PlatformNetState::udpSocket, true);
  823. #endif
  824. if (error == NoError)
  825. error = setBlocking(PlatformNetState::udpSocket, false);
  826. if (error == NoError)
  827. {
  828. error = PlatformNetState::getSocketAddress(socketFd, AF_INET, &listenAddress);
  829. if (error == NoError)
  830. {
  831. Net::addressToString(&listenAddress, listenAddressStr);
  832. Con::printf("UDP initialized on ipv4 %s", listenAddressStr);
  833. }
  834. }
  835. if (error != NoError)
  836. {
  837. closeSocket(PlatformNetState::udpSocket);
  838. PlatformNetState::udpSocket = NetSocket::INVALID;
  839. Con::printf("Unable to initialize UDP on ipv4 - error %d", error);
  840. }
  841. }
  842. }
  843. else
  844. {
  845. Con::errorf("Unable to initialize UDP on ipv4 - invalid address.");
  846. PlatformNetState::udpSocket = NetSocket::INVALID;
  847. }
  848. }
  849. if (Net::smIpv6Enabled)
  850. {
  851. if (Net::getListenAddress(NetAddress::IPV6Address, &address) == Net::NoError)
  852. {
  853. address.port = port;
  854. socketFd = ::socket(AF_INET6, SOCK_DGRAM, protocol);
  855. if (socketFd != InvalidSocketHandle)
  856. {
  857. PlatformNetState::udp6Socket = PlatformNetState::smReservedSocketList.reserve(socketFd);
  858. Net::Error error = NoError;
  859. int v = 1;
  860. setsockopt(socketFd, IPPROTO_IPV6, IPV6_V6ONLY, (const char *)&v, sizeof(v));
  861. PlatformNetState::getLastError();
  862. if (doBind)
  863. {
  864. error = bindAddress(address, PlatformNetState::udp6Socket, true);
  865. }
  866. if (error == NoError)
  867. error = setBufferSize(PlatformNetState::udp6Socket, 32768 * 8);
  868. if (error == NoError)
  869. error = setBlocking(PlatformNetState::udp6Socket, false);
  870. if (error == NoError)
  871. {
  872. error = PlatformNetState::getSocketAddress(socketFd, AF_INET6, &listenAddress);
  873. if (error == NoError)
  874. {
  875. Net::addressToString(&listenAddress, listenAddressStr);
  876. Con::printf("UDP initialized on ipv6 %s", listenAddressStr);
  877. }
  878. }
  879. if (error != NoError)
  880. {
  881. closeSocket(PlatformNetState::udp6Socket);
  882. PlatformNetState::udp6Socket = NetSocket::INVALID;
  883. Con::printf("Unable to initialize UDP on ipv6 - error %d", error);
  884. }
  885. if (Net::smMulticastEnabled && doBind)
  886. {
  887. Net::enableMulticast();
  888. }
  889. else
  890. {
  891. Net::disableMulticast();
  892. }
  893. }
  894. }
  895. }
  896. PlatformNetState::netPort = port;
  897. return PlatformNetState::udpSocket != NetSocket::INVALID || PlatformNetState::udp6Socket != NetSocket::INVALID;
  898. }
  899. NetSocket Net::getPort()
  900. {
  901. return PlatformNetState::udpSocket;
  902. }
  903. void Net::closePort()
  904. {
  905. if (PlatformNetState::udpSocket != NetSocket::INVALID)
  906. closeSocket(PlatformNetState::udpSocket);
  907. if (PlatformNetState::udp6Socket != NetSocket::INVALID)
  908. closeSocket(PlatformNetState::udp6Socket);
  909. }
  910. Net::Error Net::sendto(const NetAddress *address, const U8 *buffer, S32 bufferSize)
  911. {
  912. if(Journal::IsPlaying())
  913. return NoError;
  914. SOCKET socketFd;
  915. if(address->type == NetAddress::IPAddress || address->type == NetAddress::IPBroadcastAddress)
  916. {
  917. socketFd = PlatformNetState::smReservedSocketList.resolve(PlatformNetState::udpSocket);
  918. if (socketFd != InvalidSocketHandle)
  919. {
  920. sockaddr_in ipAddr;
  921. NetAddressToIPSocket(address, &ipAddr);
  922. if (::sendto(socketFd, (const char*)buffer, bufferSize, 0,
  923. (sockaddr *)&ipAddr, sizeof(sockaddr_in)) == SOCKET_ERROR)
  924. return PlatformNetState::getLastError();
  925. else
  926. return NoError;
  927. }
  928. else
  929. {
  930. return NotASocket;
  931. }
  932. }
  933. else if (address->type == NetAddress::IPV6Address || address->type == NetAddress::IPV6MulticastAddress)
  934. {
  935. socketFd = PlatformNetState::smReservedSocketList.resolve(address->type == NetAddress::IPV6MulticastAddress ? PlatformNetState::multicast6Socket : PlatformNetState::udp6Socket);
  936. if (socketFd != InvalidSocketHandle)
  937. {
  938. sockaddr_in6 ipAddr;
  939. NetAddressToIPSocket6(address, &ipAddr);
  940. if (::sendto(socketFd, (const char*)buffer, bufferSize, 0,
  941. (struct sockaddr *) &ipAddr, sizeof(sockaddr_in6)) == SOCKET_ERROR)
  942. return PlatformNetState::getLastError();
  943. else
  944. return NoError;
  945. }
  946. else
  947. {
  948. return NotASocket;
  949. }
  950. }
  951. return WrongProtocolType;
  952. }
  953. void Net::process()
  954. {
  955. // Process listening sockets
  956. processListenSocket(PlatformNetState::udpSocket);
  957. processListenSocket(PlatformNetState::udp6Socket);
  958. // process the polled sockets. This blob of code performs functions
  959. // similar to WinsockProc in winNet.cc
  960. if (gPolledSockets.size() == 0)
  961. return;
  962. S32 optval;
  963. socklen_t optlen = sizeof(S32);
  964. S32 bytesRead;
  965. Net::Error err;
  966. bool removeSock = false;
  967. PolledSocket *currentSock = NULL;
  968. NetSocket incomingHandleFd = NetSocket::INVALID;
  969. NetAddress out_h_addr;
  970. S32 out_h_length = 0;
  971. RawData readBuff;
  972. NetSocket removeSockHandle;
  973. for (S32 i = 0; i < gPolledSockets.size();
  974. /* no increment, this is done at end of loop body */)
  975. {
  976. removeSock = false;
  977. currentSock = gPolledSockets[i];
  978. // Cleanup if we've removed it
  979. if (currentSock == NULL)
  980. {
  981. gPolledSockets.erase(i);
  982. continue;
  983. }
  984. switch (currentSock->state)
  985. {
  986. case PolledSocket::InvalidState:
  987. Con::errorf("Error, InvalidState socket in polled sockets list");
  988. break;
  989. case PolledSocket::ConnectionPending:
  990. // see if it is now connected
  991. if (getsockopt(currentSock->fd, SOL_SOCKET, SO_ERROR,
  992. (char*)&optval, &optlen) == -1)
  993. {
  994. Con::errorf("Error getting socket options: %s", strerror(errno));
  995. removeSock = true;
  996. removeSockHandle = currentSock->handleFd;
  997. smConnectionNotify->trigger(currentSock->handleFd, Net::ConnectFailed);
  998. }
  999. else
  1000. {
  1001. if (optval == EINPROGRESS)
  1002. // still connecting...
  1003. break;
  1004. if (optval == 0)
  1005. {
  1006. // poll for writable status to be sure we're connected.
  1007. bool ready = netSocketWaitForWritable(currentSock->handleFd,0);
  1008. if(!ready)
  1009. break;
  1010. currentSock->state = PolledSocket::Connected;
  1011. smConnectionNotify->trigger(currentSock->handleFd, Net::Connected);
  1012. }
  1013. else
  1014. {
  1015. // some kind of error
  1016. Con::errorf("Error connecting: %s", strerror(errno));
  1017. removeSock = true;
  1018. removeSockHandle = currentSock->handleFd;
  1019. smConnectionNotify->trigger(currentSock->handleFd, Net::ConnectFailed);
  1020. }
  1021. }
  1022. break;
  1023. case PolledSocket::Connected:
  1024. // try to get some data
  1025. bytesRead = 0;
  1026. readBuff.alloc(MaxPacketDataSize);
  1027. err = Net::recv(currentSock->handleFd, (U8*)readBuff.data, MaxPacketDataSize, &bytesRead);
  1028. if(err == Net::NoError)
  1029. {
  1030. if (bytesRead > 0)
  1031. {
  1032. // got some data, post it
  1033. readBuff.size = bytesRead;
  1034. smConnectionReceive->trigger(currentSock->handleFd, readBuff);
  1035. }
  1036. else
  1037. {
  1038. // ack! this shouldn't happen
  1039. if (bytesRead < 0)
  1040. Con::errorf("Unexpected error on socket: %s", strerror(errno));
  1041. removeSock = true;
  1042. removeSockHandle = currentSock->handleFd;
  1043. // zero bytes read means EOF
  1044. smConnectionNotify->trigger(currentSock->handleFd, Net::Disconnected);
  1045. }
  1046. }
  1047. else if (err != Net::NoError && err != Net::WouldBlock)
  1048. {
  1049. Con::errorf("Error reading from socket: %s", strerror(errno));
  1050. removeSock = true;
  1051. removeSockHandle = currentSock->handleFd;
  1052. smConnectionNotify->trigger(currentSock->handleFd, Net::Disconnected);
  1053. }
  1054. break;
  1055. case PolledSocket::NameLookupRequired:
  1056. U32 newState;
  1057. // is the lookup complete?
  1058. if (!gNetAsync.checkLookup(
  1059. currentSock->handleFd, &out_h_addr, &out_h_length,
  1060. sizeof(out_h_addr)))
  1061. break;
  1062. if (out_h_length == -1)
  1063. {
  1064. Con::errorf("DNS lookup failed: %s", currentSock->remoteAddr);
  1065. newState = Net::DNSFailed;
  1066. removeSock = true;
  1067. removeSockHandle = currentSock->handleFd;
  1068. }
  1069. else
  1070. {
  1071. // try to connect
  1072. out_h_addr.port = currentSock->remotePort;
  1073. const sockaddr *ai_addr = NULL;
  1074. int ai_addrlen = 0;
  1075. sockaddr_in socketAddress;
  1076. sockaddr_in6 socketAddress6;
  1077. if (out_h_addr.type == NetAddress::IPAddress)
  1078. {
  1079. ai_addr = (const sockaddr*)&socketAddress;
  1080. ai_addrlen = sizeof(socketAddress);
  1081. NetAddressToIPSocket(&out_h_addr, &socketAddress);
  1082. currentSock->fd = PlatformNetState::smReservedSocketList.activate(currentSock->handleFd, AF_INET, false);
  1083. setBlocking(currentSock->handleFd, false);
  1084. #ifdef TORQUE_DEBUG_LOOKUPS
  1085. char addrString[256];
  1086. NetAddress addr;
  1087. IPSocketToNetAddress(&socketAddress, &addr);
  1088. Net::addressToString(&addr, addrString);
  1089. Con::printf("DNS: lookup resolved to %s", addrString);
  1090. #endif
  1091. }
  1092. else if (out_h_addr.type == NetAddress::IPV6Address)
  1093. {
  1094. ai_addr = (const sockaddr*)&socketAddress6;
  1095. ai_addrlen = sizeof(socketAddress6);
  1096. NetAddressToIPSocket6(&out_h_addr, &socketAddress6);
  1097. currentSock->fd = PlatformNetState::smReservedSocketList.activate(currentSock->handleFd, AF_INET6, false);
  1098. setBlocking(currentSock->handleFd, false);
  1099. #ifdef TORQUE_DEBUG_LOOKUPS
  1100. char addrString[256];
  1101. NetAddress addr;
  1102. IPSocket6ToNetAddress(&socketAddress6, &addr);
  1103. Net::addressToString(&addr, addrString);
  1104. Con::printf("DNS: lookup resolved to %s", addrString);
  1105. #endif
  1106. }
  1107. else
  1108. {
  1109. Con::errorf("Error connecting to %s: Invalid Protocol",
  1110. currentSock->remoteAddr);
  1111. newState = Net::ConnectFailed;
  1112. removeSock = true;
  1113. removeSockHandle = currentSock->handleFd;
  1114. }
  1115. if (ai_addr)
  1116. {
  1117. if (::connect(currentSock->fd, ai_addr,
  1118. ai_addrlen) == -1)
  1119. {
  1120. err = PlatformNetState::getLastError();
  1121. if (err != Net::WouldBlock)
  1122. {
  1123. Con::errorf("Error connecting to %s: %u",
  1124. currentSock->remoteAddr, err);
  1125. newState = Net::ConnectFailed;
  1126. removeSock = true;
  1127. removeSockHandle = currentSock->handleFd;
  1128. }
  1129. else
  1130. {
  1131. newState = Net::DNSResolved;
  1132. currentSock->state = PolledSocket::ConnectionPending;
  1133. }
  1134. }
  1135. else
  1136. {
  1137. newState = Net::Connected;
  1138. currentSock->state = Connected;
  1139. }
  1140. }
  1141. }
  1142. smConnectionNotify->trigger(currentSock->handleFd, newState);
  1143. break;
  1144. case PolledSocket::Listening:
  1145. NetAddress incomingAddy;
  1146. incomingHandleFd = Net::accept(currentSock->handleFd, &incomingAddy);
  1147. if(incomingHandleFd != NetSocket::INVALID)
  1148. {
  1149. setBlocking(incomingHandleFd, false);
  1150. addPolledSocket(incomingHandleFd, PlatformNetState::smReservedSocketList.resolve(incomingHandleFd), Connected);
  1151. smConnectionAccept->trigger(currentSock->handleFd, incomingHandleFd, incomingAddy);
  1152. }
  1153. break;
  1154. }
  1155. // only increment index if we're not removing the connection, since
  1156. // the removal will shift the indices down by one
  1157. if (removeSock)
  1158. closeConnectTo(removeSockHandle);
  1159. else
  1160. i++;
  1161. }
  1162. }
  1163. void Net::processListenSocket(NetSocket socketHandle)
  1164. {
  1165. if (socketHandle == NetSocket::INVALID)
  1166. return;
  1167. sockaddr_storage sa;
  1168. sa.ss_family = AF_UNSPEC;
  1169. NetAddress srcAddress;
  1170. RawData tmpBuffer;
  1171. tmpBuffer.alloc(Net::MaxPacketDataSize);
  1172. SOCKET socketFd = PlatformNetState::smReservedSocketList.resolve(socketHandle);
  1173. for (;;)
  1174. {
  1175. socklen_t addrLen = sizeof(sa);
  1176. S32 bytesRead = -1;
  1177. if (socketHandle != NetSocket::INVALID)
  1178. bytesRead = ::recvfrom(socketFd, (char *)tmpBuffer.data, Net::MaxPacketDataSize, 0, (struct sockaddr*)&sa, &addrLen);
  1179. if (bytesRead == -1)
  1180. break;
  1181. if (sa.ss_family == AF_INET)
  1182. IPSocketToNetAddress((sockaddr_in *)&sa, &srcAddress);
  1183. else if (sa.ss_family == AF_INET6)
  1184. IPSocket6ToNetAddress((sockaddr_in6 *)&sa, &srcAddress);
  1185. else
  1186. continue;
  1187. if (bytesRead <= 0)
  1188. continue;
  1189. if (srcAddress.type == NetAddress::IPAddress &&
  1190. srcAddress.address.ipv4.netNum[0] == 127 &&
  1191. srcAddress.address.ipv4.netNum[1] == 0 &&
  1192. srcAddress.address.ipv4.netNum[2] == 0 &&
  1193. srcAddress.address.ipv4.netNum[3] == 1 &&
  1194. srcAddress.port == PlatformNetState::netPort)
  1195. continue;
  1196. tmpBuffer.size = bytesRead;
  1197. smPacketReceive->trigger(srcAddress, tmpBuffer);
  1198. }
  1199. }
  1200. NetSocket Net::openSocket()
  1201. {
  1202. return PlatformNetState::smReservedSocketList.reserve();
  1203. }
  1204. Net::Error Net::closeSocket(NetSocket handleFd)
  1205. {
  1206. if(handleFd != NetSocket::INVALID)
  1207. {
  1208. SOCKET socketFd = PlatformNetState::smReservedSocketList.resolve(handleFd);
  1209. PlatformNetState::smReservedSocketList.remove(handleFd);
  1210. if(!::closesocket(socketFd))
  1211. return NoError;
  1212. else
  1213. return PlatformNetState::getLastError();
  1214. }
  1215. else
  1216. return NotASocket;
  1217. }
  1218. Net::Error Net::connect(NetSocket handleFd, const NetAddress *address)
  1219. {
  1220. if(!(address->type == NetAddress::IPAddress || address->type == NetAddress::IPV6Address))
  1221. return WrongProtocolType;
  1222. SOCKET socketFd = PlatformNetState::smReservedSocketList.resolve(handleFd);
  1223. if (address->type == NetAddress::IPAddress)
  1224. {
  1225. sockaddr_in socketAddress;
  1226. NetAddressToIPSocket(address, &socketAddress);
  1227. if (socketFd == InvalidSocketHandle)
  1228. {
  1229. socketFd = PlatformNetState::smReservedSocketList.activate(handleFd, AF_INET, false);
  1230. }
  1231. if (!::connect(socketFd, (struct sockaddr *) &socketAddress, sizeof(socketAddress)))
  1232. return NoError;
  1233. }
  1234. else if (address->type == NetAddress::IPV6Address)
  1235. {
  1236. sockaddr_in6 socketAddress;
  1237. NetAddressToIPSocket6(address, &socketAddress);
  1238. if (socketFd == InvalidSocketHandle)
  1239. {
  1240. socketFd = PlatformNetState::smReservedSocketList.activate(handleFd, AF_INET6, false);
  1241. }
  1242. if (!::connect(socketFd, (struct sockaddr *) &socketAddress, sizeof(socketAddress)))
  1243. return NoError;
  1244. }
  1245. return PlatformNetState::getLastError();
  1246. }
  1247. Net::Error Net::listen(NetSocket handleFd, S32 backlog)
  1248. {
  1249. SOCKET socketFd = PlatformNetState::smReservedSocketList.resolve(handleFd);
  1250. if (socketFd == InvalidSocketHandle)
  1251. return NotASocket;
  1252. if(!::listen(socketFd, backlog))
  1253. return NoError;
  1254. return PlatformNetState::getLastError();
  1255. }
  1256. NetSocket Net::accept(NetSocket handleFd, NetAddress *remoteAddress)
  1257. {
  1258. sockaddr_storage addr;
  1259. socklen_t addrLen = sizeof(addr);
  1260. SOCKET socketFd = PlatformNetState::smReservedSocketList.resolve(handleFd);
  1261. if (socketFd == InvalidSocketHandle)
  1262. return NetSocket::INVALID;
  1263. SOCKET acceptedSocketFd = ::accept(socketFd, (sockaddr *)&addr, &addrLen);
  1264. if (acceptedSocketFd != InvalidSocketHandle)
  1265. {
  1266. if (addr.ss_family == AF_INET)
  1267. {
  1268. // ipv4
  1269. IPSocketToNetAddress(((struct sockaddr_in*)&addr), remoteAddress);
  1270. }
  1271. else if (addr.ss_family == AF_INET6)
  1272. {
  1273. // ipv6
  1274. IPSocket6ToNetAddress(((struct sockaddr_in6*)&addr), remoteAddress);
  1275. }
  1276. NetSocket newHandleFd = PlatformNetState::smReservedSocketList.reserve(acceptedSocketFd);
  1277. return newHandleFd;
  1278. }
  1279. return NetSocket::INVALID;
  1280. }
  1281. Net::Error Net::bindAddress(const NetAddress &address, NetSocket handleFd, bool useUDP)
  1282. {
  1283. int error = 0;
  1284. sockaddr_storage socketAddress;
  1285. dMemset(&socketAddress, '\0', sizeof(socketAddress));
  1286. SOCKET socketFd = PlatformNetState::smReservedSocketList.resolve(handleFd);
  1287. if (socketFd == InvalidSocketHandle)
  1288. {
  1289. if (handleFd.getHandle() == -1)
  1290. return NotASocket;
  1291. }
  1292. if (address.type == NetAddress::IPAddress)
  1293. {
  1294. socketFd = PlatformNetState::smReservedSocketList.activate(handleFd, AF_INET, useUDP);
  1295. NetAddressToIPSocket(&address, (struct sockaddr_in*)&socketAddress);
  1296. error = ::bind(socketFd, (struct sockaddr*)&socketAddress, sizeof(sockaddr_in));
  1297. }
  1298. else if (address.type == NetAddress::IPV6Address)
  1299. {
  1300. socketFd = PlatformNetState::smReservedSocketList.activate(handleFd, AF_INET6, useUDP);
  1301. NetAddressToIPSocket6(&address, (struct sockaddr_in6*)&socketAddress);
  1302. error = ::bind(socketFd, (struct sockaddr*)&socketAddress, sizeof(sockaddr_in6));
  1303. }
  1304. if (!error)
  1305. return NoError;
  1306. return PlatformNetState::getLastError();
  1307. }
  1308. Net::Error Net::setBufferSize(NetSocket handleFd, S32 bufferSize)
  1309. {
  1310. S32 error;
  1311. SOCKET socketFd = PlatformNetState::smReservedSocketList.resolve(handleFd);
  1312. if (socketFd == InvalidSocketHandle)
  1313. return NotASocket;
  1314. error = ::setsockopt(socketFd, SOL_SOCKET, SO_RCVBUF, (char *) &bufferSize, sizeof(bufferSize));
  1315. if(!error)
  1316. error = ::setsockopt(socketFd, SOL_SOCKET, SO_SNDBUF, (char *) &bufferSize, sizeof(bufferSize));
  1317. if(!error)
  1318. return NoError;
  1319. return PlatformNetState::getLastError();
  1320. }
  1321. Net::Error Net::setBroadcast(NetSocket handleFd, bool broadcast)
  1322. {
  1323. S32 bc = broadcast;
  1324. SOCKET socketFd = PlatformNetState::smReservedSocketList.resolve(handleFd);
  1325. if (socketFd == InvalidSocketHandle)
  1326. return NotASocket;
  1327. S32 error = ::setsockopt(socketFd, SOL_SOCKET, SO_BROADCAST, (char*)&bc, sizeof(bc));
  1328. if(!error)
  1329. return NoError;
  1330. return PlatformNetState::getLastError();
  1331. }
  1332. Net::Error Net::setBlocking(NetSocket handleFd, bool blockingIO)
  1333. {
  1334. SOCKET socketFd = PlatformNetState::smReservedSocketList.resolve(handleFd);
  1335. if (socketFd == InvalidSocketHandle)
  1336. return NotASocket;
  1337. unsigned long notblock = !blockingIO;
  1338. S32 error = ioctl(socketFd, FIONBIO, &notblock);
  1339. if(!error)
  1340. return NoError;
  1341. return PlatformNetState::getLastError();
  1342. }
  1343. Net::Error Net::getListenAddress(const NetAddress::Type type, NetAddress *address, bool forceDefaults)
  1344. {
  1345. if (type == NetAddress::IPAddress)
  1346. {
  1347. const char* serverIP = forceDefaults ? NULL : Con::getVariable("pref::Net::BindAddress");
  1348. if (!serverIP || serverIP[0] == '\0')
  1349. {
  1350. address->type = type;
  1351. address->port = 0;
  1352. *((U32*)address->address.ipv4.netNum) = INADDR_ANY;
  1353. return Net::NoError;
  1354. }
  1355. else
  1356. {
  1357. return Net::stringToAddress(serverIP, address, false);
  1358. }
  1359. }
  1360. else if (type == NetAddress::IPBroadcastAddress)
  1361. {
  1362. address->type = type;
  1363. address->port = 0;
  1364. *((U32*)address->address.ipv4.netNum) = INADDR_BROADCAST;
  1365. return Net::NoError;
  1366. }
  1367. else if (type == NetAddress::IPV6Address)
  1368. {
  1369. const char* serverIP6 = forceDefaults ? NULL : Con::getVariable("pref::Net::BindAddress6");
  1370. if (!serverIP6 || serverIP6[0] == '\0')
  1371. {
  1372. sockaddr_in6 addr;
  1373. dMemset(&addr, '\0', sizeof(addr));
  1374. addr.sin6_port = 0;
  1375. addr.sin6_addr = in6addr_any;
  1376. IPSocket6ToNetAddress(&addr, address);
  1377. return Net::NoError;
  1378. }
  1379. else
  1380. {
  1381. return Net::stringToAddress(serverIP6, address, false);
  1382. }
  1383. }
  1384. else if (type == NetAddress::IPV6MulticastAddress)
  1385. {
  1386. const char* multicastAddressValue = forceDefaults ? NULL : Con::getVariable("pref::Net::Multicast6Address");
  1387. if (!multicastAddressValue || multicastAddressValue[0] == '\0')
  1388. {
  1389. multicastAddressValue = TORQUE_NET_DEFAULT_MULTICAST_ADDRESS;
  1390. }
  1391. return Net::stringToAddress(multicastAddressValue, address, false);
  1392. }
  1393. else
  1394. {
  1395. return Net::WrongProtocolType;
  1396. }
  1397. }
  1398. void Net::getIdealListenAddress(NetAddress *address)
  1399. {
  1400. dMemset(address, '\0', sizeof(NetAddress));
  1401. if (Net::smIpv6Enabled)
  1402. {
  1403. if (Net::getListenAddress(NetAddress::IPV6Address, address) == NeedHostLookup)
  1404. {
  1405. Net::getListenAddress(NetAddress::IPV6Address, address, true);
  1406. }
  1407. }
  1408. else
  1409. {
  1410. if (Net::getListenAddress(NetAddress::IPAddress, address) == NeedHostLookup)
  1411. {
  1412. Net::getListenAddress(NetAddress::IPAddress, address, true);
  1413. }
  1414. }
  1415. }
  1416. Net::Error Net::send(NetSocket handleFd, const U8 *buffer, S32 bufferSize, S32 *outBytesWritten)
  1417. {
  1418. SOCKET socketFd = PlatformNetState::smReservedSocketList.resolve(handleFd);
  1419. if (socketFd == InvalidSocketHandle)
  1420. return NotASocket;
  1421. errno = 0;
  1422. S32 bytesWritten = ::send(socketFd, (const char*)buffer, bufferSize, 0);
  1423. if (outBytesWritten)
  1424. {
  1425. *outBytesWritten = *outBytesWritten < 0 ? 0 : bytesWritten;
  1426. }
  1427. return PlatformNetState::getLastError();
  1428. }
  1429. Net::Error Net::recv(NetSocket handleFd, U8 *buffer, S32 bufferSize, S32 *bytesRead)
  1430. {
  1431. SOCKET socketFd = PlatformNetState::smReservedSocketList.resolve(handleFd);
  1432. if (socketFd == InvalidSocketHandle)
  1433. return NotASocket;
  1434. *bytesRead = ::recv(socketFd, (char*)buffer, bufferSize, 0);
  1435. if(*bytesRead == -1)
  1436. return PlatformNetState::getLastError();
  1437. return NoError;
  1438. }
  1439. bool Net::compareAddresses(const NetAddress *a1, const NetAddress *a2)
  1440. {
  1441. return a1->isSameAddressAndPort(*a2);
  1442. }
  1443. Net::Error Net::stringToAddress(const char *addressString, NetAddress *address, bool hostLookup, int requiredFamily)
  1444. {
  1445. char addr[256];
  1446. int port = 0;
  1447. int actualFamily = AF_UNSPEC;
  1448. if (!PlatformNetState::extractAddressParts(addressString, addr, port, actualFamily))
  1449. {
  1450. return WrongProtocolType;
  1451. }
  1452. // Make sure family matches (in cast we have IP: stuff in address)
  1453. if (requiredFamily != AF_UNSPEC && actualFamily != AF_UNSPEC && (actualFamily != requiredFamily))
  1454. {
  1455. return WrongProtocolType;
  1456. }
  1457. if (actualFamily == AF_UNSPEC)
  1458. {
  1459. actualFamily = requiredFamily;
  1460. }
  1461. addressString = addr;
  1462. dMemset(address, '\0', sizeof(NetAddress));
  1463. if (!dStricmp(addressString, "broadcast"))
  1464. {
  1465. address->type = NetAddress::IPBroadcastAddress;
  1466. if (!(actualFamily == AF_UNSPEC || actualFamily == AF_INET))
  1467. return WrongProtocolType;
  1468. if (port != 0)
  1469. address->port = port;
  1470. else
  1471. address->port = PlatformNetState::defaultPort;
  1472. }
  1473. else if (!dStricmp(addressString, "multicast"))
  1474. {
  1475. address->type = NetAddress::IPV6MulticastAddress;
  1476. if (!(actualFamily == AF_UNSPEC || actualFamily == AF_INET6))
  1477. return WrongProtocolType;
  1478. if (port != 0)
  1479. address->port = port;
  1480. else
  1481. address->port = PlatformNetState::defaultPort;
  1482. }
  1483. else
  1484. {
  1485. sockaddr_in ipAddr;
  1486. sockaddr_in6 ipAddr6;
  1487. dMemset(&ipAddr, 0, sizeof(ipAddr));
  1488. dMemset(&ipAddr6, 0, sizeof(ipAddr6));
  1489. bool hasInterface = dStrchr(addressString, '%') != NULL; // if we have an interface, best use getaddrinfo to parse
  1490. // Check if we've got a simple ipv4 / ipv6
  1491. if (inet_pton(AF_INET, addressString, &ipAddr.sin_addr) == 1)
  1492. {
  1493. if (!(actualFamily == AF_UNSPEC || actualFamily == AF_INET))
  1494. return WrongProtocolType;
  1495. IPSocketToNetAddress(((struct sockaddr_in*)&ipAddr), address);
  1496. if (port != 0)
  1497. address->port = port;
  1498. else
  1499. address->port = PlatformNetState::defaultPort;
  1500. return NoError;
  1501. }
  1502. else if (!hasInterface && inet_pton(AF_INET6, addressString, &ipAddr6.sin6_addr) == 1)
  1503. {
  1504. if (!(actualFamily == AF_UNSPEC || actualFamily == AF_INET6))
  1505. return WrongProtocolType;
  1506. IPSocket6ToNetAddress(((struct sockaddr_in6*)&ipAddr6), address);
  1507. if (port != 0)
  1508. address->port = port;
  1509. else
  1510. address->port = PlatformNetState::defaultPort;
  1511. return NoError;
  1512. }
  1513. else
  1514. {
  1515. if (!hostLookup && !hasInterface)
  1516. return NeedHostLookup;
  1517. struct addrinfo hint, *res = NULL;
  1518. dMemset(&hint, 0, sizeof(hint));
  1519. hint.ai_family = actualFamily;
  1520. hint.ai_flags = hostLookup ? 0 : AI_NUMERICHOST;
  1521. if (getaddrinfo(addressString, NULL, &hint, &res) == 0)
  1522. {
  1523. if (actualFamily != AF_UNSPEC)
  1524. {
  1525. // Prefer desired protocol
  1526. res = PlatformNetState::pickAddressByProtocol(res, actualFamily);
  1527. }
  1528. if (res && res->ai_family == AF_INET)
  1529. {
  1530. // ipv4
  1531. IPSocketToNetAddress(((struct sockaddr_in*)res->ai_addr), address);
  1532. }
  1533. else if (res && res->ai_family == AF_INET6)
  1534. {
  1535. // ipv6
  1536. IPSocket6ToNetAddress(((struct sockaddr_in6*)res->ai_addr), address);
  1537. }
  1538. else
  1539. {
  1540. // unknown
  1541. return UnknownError;
  1542. }
  1543. if (port != 0)
  1544. address->port = port;
  1545. else
  1546. address->port = PlatformNetState::defaultPort;
  1547. }
  1548. }
  1549. }
  1550. return NoError;
  1551. }
  1552. void Net::addressToString(const NetAddress *address, char addressString[256])
  1553. {
  1554. if(address->type == NetAddress::IPAddress || address->type == NetAddress::IPBroadcastAddress)
  1555. {
  1556. sockaddr_in ipAddr;
  1557. NetAddressToIPSocket(address, &ipAddr);
  1558. if (ipAddr.sin_addr.s_addr == htonl(INADDR_BROADCAST) || address->type == NetAddress::IPBroadcastAddress)
  1559. {
  1560. if (ipAddr.sin_port == 0)
  1561. dSprintf(addressString, 256, "IP:Broadcast");
  1562. else
  1563. dSprintf(addressString, 256, "IP:Broadcast:%d", ntohs(ipAddr.sin_port));
  1564. }
  1565. else
  1566. {
  1567. char buffer[256];
  1568. buffer[0] = '\0';
  1569. inet_ntop(AF_INET, &(ipAddr.sin_addr), buffer, sizeof(buffer));
  1570. if (ipAddr.sin_port == 0)
  1571. dSprintf(addressString, 256, "IP:%s", buffer);
  1572. else
  1573. dSprintf(addressString, 256, "IP:%s:%i", buffer, ntohs(ipAddr.sin_port));
  1574. }
  1575. }
  1576. else if (address->type == NetAddress::IPV6Address)
  1577. {
  1578. char buffer[256];
  1579. buffer[0] = '\0';
  1580. sockaddr_in6 ipAddr;
  1581. NetAddressToIPSocket6(address, &ipAddr);
  1582. inet_ntop(AF_INET6, &(ipAddr.sin6_addr), buffer, sizeof(buffer));
  1583. if (ipAddr.sin6_port == 0)
  1584. dSprintf(addressString, 256, "IP6:%s", buffer);
  1585. else
  1586. dSprintf(addressString, 256, "IP6:[%s]:%i", buffer, ntohs(ipAddr.sin6_port));
  1587. }
  1588. else if (address->type == NetAddress::IPV6MulticastAddress)
  1589. {
  1590. if (address->port == 0)
  1591. dSprintf(addressString, 256, "IP6:Multicast");
  1592. else
  1593. dSprintf(addressString, 256, "IP6:Multicast:%d", address->port);
  1594. }
  1595. else
  1596. {
  1597. *addressString = 0;
  1598. return;
  1599. }
  1600. }
  1601. void Net::enableMulticast()
  1602. {
  1603. SOCKET socketFd;
  1604. if (Net::smIpv6Enabled)
  1605. {
  1606. socketFd = PlatformNetState::smReservedSocketList.resolve(PlatformNetState::udp6Socket);
  1607. if (socketFd != InvalidSocketHandle)
  1608. {
  1609. PlatformNetState::multicast6Socket = PlatformNetState::udp6Socket;
  1610. Net::Error error = NoError;
  1611. if (error == NoError)
  1612. {
  1613. unsigned long multicastTTL = 1;
  1614. if (setsockopt(socketFd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
  1615. (char*)&multicastTTL, sizeof(multicastTTL)) < 0)
  1616. {
  1617. error = PlatformNetState::getLastError();
  1618. }
  1619. }
  1620. // Find multicast to bind to...
  1621. NetAddress multicastAddress;
  1622. sockaddr_in6 multicastSocketAddress;
  1623. const char *multicastAddressValue = Con::getVariable("pref::Net::Multicast6Address");
  1624. if (!multicastAddressValue || multicastAddressValue[0] == '\0')
  1625. {
  1626. multicastAddressValue = TORQUE_NET_DEFAULT_MULTICAST_ADDRESS;
  1627. }
  1628. error = Net::stringToAddress(multicastAddressValue, &multicastAddress, false);
  1629. if (error == NoError)
  1630. {
  1631. dMemset(&PlatformNetState::multicast6Group, '\0', sizeof(&PlatformNetState::multicast6Group));
  1632. NetAddressToIPSocket6(&multicastAddress, &multicastSocketAddress);
  1633. dMemcpy(&PlatformNetState::multicast6Group.ipv6mr_multiaddr, &multicastSocketAddress.sin6_addr, sizeof(PlatformNetState::multicast6Group.ipv6mr_multiaddr));
  1634. }
  1635. // Setup group
  1636. if (error == NoError)
  1637. {
  1638. const char *multicastInterface = Con::getVariable("pref::Net::Multicast6Interface");
  1639. if (multicastInterface && multicastInterface[0] != '\0')
  1640. {
  1641. #ifdef TORQUE_USE_WINSOCK
  1642. PlatformNetState::multicast6Group.ipv6mr_interface = dAtoi(multicastInterface);
  1643. #else
  1644. PlatformNetState::multicast6Group.ipv6mr_interface = if_nametoindex(multicastInterface);
  1645. #endif
  1646. }
  1647. else
  1648. {
  1649. PlatformNetState::multicast6Group.ipv6mr_interface = 0; // 0 == accept from any interface
  1650. }
  1651. if (PlatformNetState::multicast6Group.ipv6mr_interface && error == NoError)
  1652. {
  1653. if (setsockopt(socketFd, IPPROTO_IPV6, IPV6_MULTICAST_IF, (char *)&PlatformNetState::multicast6Group.ipv6mr_interface, sizeof(PlatformNetState::multicast6Group.ipv6mr_interface)) < 0)
  1654. {
  1655. error = PlatformNetState::getLastError();
  1656. }
  1657. }
  1658. if (error == NoError && setsockopt(socketFd, IPPROTO_IPV6, IPV6_JOIN_GROUP, (char*)&PlatformNetState::multicast6Group, sizeof(PlatformNetState::multicast6Group)) < 0)
  1659. {
  1660. error = PlatformNetState::getLastError();
  1661. }
  1662. }
  1663. if (error == NoError)
  1664. {
  1665. char listenAddressStr[256];
  1666. Net::addressToString(&multicastAddress, listenAddressStr);
  1667. Con::printf("Multicast initialized on %s", listenAddressStr);
  1668. }
  1669. if (error != NoError)
  1670. {
  1671. PlatformNetState::multicast6Socket = NetSocket::INVALID;
  1672. Con::printf("Unable to multicast UDP - error %d", error);
  1673. }
  1674. }
  1675. }
  1676. }
  1677. void Net::disableMulticast()
  1678. {
  1679. if (PlatformNetState::multicast6Socket != NetSocket::INVALID)
  1680. {
  1681. PlatformNetState::multicast6Socket = NetSocket::INVALID;
  1682. }
  1683. }
  1684. bool Net::isMulticastEnabled()
  1685. {
  1686. return PlatformNetState::multicast6Socket != NetSocket::INVALID;
  1687. }
  1688. U32 NetAddress::getHash() const
  1689. {
  1690. U32 value = 0;
  1691. switch (type)
  1692. {
  1693. case NetAddress::IPAddress:
  1694. value = Torque::hash((const U8*)&address.ipv4.netNum, sizeof(address.ipv4.netNum), 0);
  1695. break;
  1696. case NetAddress::IPV6Address:
  1697. value = Torque::hash((const U8*)address.ipv6.netNum, sizeof(address.ipv6.netNum), 0);
  1698. break;
  1699. default:
  1700. value = 0;
  1701. break;
  1702. }
  1703. return value;
  1704. }
  1705. bool Net::isAddressTypeAvailable(NetAddress::Type addressType)
  1706. {
  1707. switch (addressType)
  1708. {
  1709. case NetAddress::IPAddress:
  1710. return PlatformNetState::udpSocket != NetSocket::INVALID;
  1711. case NetAddress::IPV6Address:
  1712. return PlatformNetState::udp6Socket != NetSocket::INVALID;
  1713. case NetAddress::IPBroadcastAddress:
  1714. return PlatformNetState::udpSocket != NetSocket::INVALID;
  1715. case NetAddress::IPV6MulticastAddress:
  1716. return PlatformNetState::multicast6Socket != NetSocket::INVALID;
  1717. default:
  1718. return false;
  1719. }
  1720. }