6c112c3368
git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@6162 fc73d0e0-1445-4013-8a0c-d673dee63da5
389 lines
13 KiB
C
389 lines
13 KiB
C
/*
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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// net.h -- quake's interface to the networking layer
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#define PORT_ANY -1
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#if defined(NACL) || defined(FTE_TARGET_WEB)
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#define HAVE_WEBSOCKCL
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#endif
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#ifdef __linux__
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//#define UNIXSOCKETS
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#endif
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//FIXME: should split this into loopback/dgram/stream/dtls/tls/irc
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//with the ipv4/v6/x as a separate parameter
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typedef enum {
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NA_INVALID,
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NA_LOOPBACK,
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/*NA_HYBRID,*/ //ipv6 hybrid socket that might accept ipv4 packets too.
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NA_IP,
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NA_IPV6,
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NA_IPX,
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#ifdef UNIXSOCKETS
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NA_UNIX,
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#endif
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#ifdef IRCCONNECT
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NA_IRC/*remove!*/,
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#endif
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#ifdef HAVE_WEBSOCKCL
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NA_WEBSOCKET,
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#endif
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} netadrtype_t;
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typedef enum {
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NP_DGRAM,
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NP_DTLS, //connected via ICE/WebRTC
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NP_STREAM,
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NP_TLS,
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NP_WS,
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NP_WSS,
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NP_NATPMP, //server-only scheme for registering public ports.
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NP_RTC_TCP,
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NP_RTC_TLS, //really need a better way to do this than two copies of every protocol...
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NP_INVALID
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} netproto_t;
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typedef enum {NS_CLIENT, NS_SERVER} netsrc_t;
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typedef struct netadr_s
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{
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netadrtype_t type;
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netproto_t prot;
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union {
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qbyte ip[4];
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qbyte ip6[16];
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qbyte ipx[10];
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#ifdef IRCCONNECT
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struct {
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char host[32];
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char user[32];
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char channel[12];
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} irc;
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#endif
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#ifdef HAVE_WEBSOCKCL
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char websocketurl[64];
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#endif
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#ifdef UNIXSOCKETS
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struct
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{
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int len; //abstract addresses contain nulls, so this is needed.
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char path[108];
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} un;
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#endif
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} address;
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unsigned short port;
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unsigned short connum; //which quake connection/socket the address is talking about. 1-based. 0 is unspecified. this is NOT used for address equivelency.
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unsigned int scopeid; //ipv6 interface id thing.
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} netadr_t;
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struct sockaddr_qstorage
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{
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short dontusesa_family;
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unsigned char dontusesa_pad[6];
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qint64_t sa_align;
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unsigned char sa_pad2[112];
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};
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extern netadr_t net_local_cl_ipadr;
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extern netadr_t net_from; // address of who sent the packet
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extern sizebuf_t net_message;
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//#define MAX_UDP_PACKET (MAX_MSGLEN*2) // one more than msg + header
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#define MAX_UDP_PACKET 8192 // one more than msg + header
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extern FTE_ALIGN(4) qbyte net_message_buffer[MAX_OVERALLMSGLEN];
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typedef enum
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{
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NETERR_SENT = 0, //all is well
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NETERR_NOROUTE = 1, //destination isn't valid for this socket/etc. try a different one if possible
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NETERR_DISCONNECTED = 2, //socket can no longer send anything
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NETERR_MTU = 3, //packet wasn't sent due to MTU
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NETERR_CLOGGED = 4 //socket is suffering from conjestion
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} neterr_t;
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extern cvar_t hostname;
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int TCP_OpenStream (netadr_t *remoteaddr); //makes things easier
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struct ftenet_connections_s;
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void NET_Init (void);
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void NET_Tick (void);
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void SVNET_RegisterCvars(void);
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void NET_InitClient (qboolean loopbackonly);
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void NET_CloseClient(void);
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void NET_InitServer (void);
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qboolean NET_WasSpecialPacket(struct ftenet_connections_s *col);
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void NET_CloseServer (void);
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void UDP_CloseSocket (int socket);
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void NET_Shutdown (void);
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qboolean NET_GetRates(struct ftenet_connections_s *collection, float *pi, float *po, float *bi, float *bo);
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qboolean NET_UpdateRates(struct ftenet_connections_s *collection, qboolean inbound, size_t size); //for demos to not be weird
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void NET_ReadPackets (struct ftenet_connections_s *collection);
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neterr_t NET_SendPacket (struct ftenet_connections_s *col, int length, const void *data, netadr_t *to);
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int NET_LocalAddressForRemote(struct ftenet_connections_s *collection, netadr_t *remote, netadr_t *local, int idx);
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void NET_PrintAddresses(struct ftenet_connections_s *collection);
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qboolean NET_AddressSmellsFunny(netadr_t *a);
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qboolean NET_EnsureRoute(struct ftenet_connections_s *collection, char *routename, char *host, netadr_t *adr);
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void NET_PrintConnectionsStatus(struct ftenet_connections_s *collection);
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enum addressscope_e
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{
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ASCOPE_PROCESS=0,
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ASCOPE_HOST=1,
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ASCOPE_LINK=2,
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ASCOPE_LAN=3,
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ASCOPE_NET=4
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};
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enum addressscope_e NET_ClassifyAddress(netadr_t *adr, const char **outdesc);
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qboolean NET_AddrIsReliable(netadr_t *adr); //hints that the protocol is reliable. if so, we don't need to wait for acks
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qboolean NET_CompareAdr (netadr_t *a, netadr_t *b);
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qboolean NET_CompareBaseAdr (netadr_t *a, netadr_t *b);
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void NET_AdrToStringResolve (netadr_t *adr, void (*resolved)(void *ctx, void *data, size_t a, size_t b), void *ctx, size_t a, size_t b);
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char *NET_AdrToString (char *s, int len, netadr_t *a);
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char *NET_SockadrToString (char *s, int len, struct sockaddr_qstorage *a, size_t sizeofa);
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char *NET_BaseAdrToString (char *s, int len, netadr_t *a);
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size_t NET_StringToSockaddr2 (const char *s, int defaultport, netadrtype_t afhint, struct sockaddr_qstorage *sadr, int *addrfamily, int *addrsize, size_t addrcount);
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#define NET_StringToSockaddr(s,p,a,f,z) (NET_StringToSockaddr2(s,p,NA_INVALID,a,f,z,1)>0)
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size_t NET_StringToAdr2 (const char *s, int defaultport, netadr_t *a, size_t addrcount, const char **pathstart);
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#define NET_StringToAdr(s,p,a) NET_StringToAdr2(s,p,a,1,NULL)
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qboolean NET_PortToAdr (netadrtype_t adrfamily, netproto_t adrprot, const char *s, netadr_t *a);
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qboolean NET_IsClientLegal(netadr_t *adr);
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qboolean NET_IsLoopBackAddress (netadr_t *adr);
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qboolean NET_StringToAdrMasked (const char *s, qboolean allowdns, netadr_t *a, netadr_t *amask);
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char *NET_AdrToStringMasked (char *s, int len, netadr_t *a, netadr_t *amask);
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void NET_IntegerToMask (netadr_t *a, netadr_t *amask, int bits);
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qboolean NET_CompareAdrMasked(netadr_t *a, netadr_t *b, netadr_t *mask);
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qboolean FTENET_AddToCollection(struct ftenet_connections_s *col, const char *name, const char *address, netadrtype_t addrtype, netproto_t addrprot);
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enum certprops_e
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{
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QCERT_PEERFINGERPRINT
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};
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size_t NET_GetConnectionCertificate(struct ftenet_connections_s *col, netadr_t *a, enum certprops_e prop, char *out, size_t outsize);
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#ifdef HAVE_DTLS
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qboolean NET_DTLS_Create(struct ftenet_connections_s *col, netadr_t *to, const char *hostname);
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qboolean NET_DTLS_Decode(struct ftenet_connections_s *col);
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qboolean NET_DTLS_Disconnect(struct ftenet_connections_s *col, netadr_t *to);
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void NET_DTLS_Timeouts(struct ftenet_connections_s *col);
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extern cvar_t dtls_psk_hint, dtls_psk_user, dtls_psk_key;
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#endif
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extern cvar_t timeout;
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extern cvar_t tls_ignorecertificateerrors; //evil evil evil.
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struct ftecrypto_s;
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qboolean NET_RegisterCrypto(void *module, struct ftecrypto_s *driver);
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//============================================================================
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#define OLD_AVG 0.99 // total = oldtotal*OLD_AVG + new*(1-OLD_AVG)
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#define MAX_LATENT 32
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#define MAX_ADR_SIZE 64
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typedef struct
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{
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qboolean fatal_error;
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#ifdef NQPROT
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int isnqprotocol;
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qboolean nqreliable_allowed; //says the peer has acked the last reliable (or timed out and needs resending).
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float nqreliable_resendtime;//force nqreliable_allowed, thereby forcing a resend of anything n
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qbyte nqunreliableonly; //nq can't cope with certain reliables some times. if 2, we have a reliable that result in a block (that should be sent). if 1, we are blocking. if 0, we can send reliables freely. if 3, then we just want to ignore clc_moves
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#endif
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qboolean pext_fragmentation; //fte's packet fragmentation extension, to avoid issues with low mtus.
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qboolean pext_stunaware; //prevent the two lead-bits of packets from being either 0(stun), so stray stun packets cannot mess things up for us.
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struct netprim_s netprim;
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int mtu; //the path mtu, if known
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int dupe; //how many times to dupe packets
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float last_received; // for timeouts
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// the statistics are cleared at each client begin, because
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// the server connecting process gives a bogus picture of the data
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float frame_latency; // rolling average
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float frame_rate;
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int drop_count; // dropped packets, cleared each level
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int good_count; // cleared each level
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int bytesin;
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int bytesout;
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netadr_t remote_address;
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netsrc_t sock;
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int qport;
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int qportsize;
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// bandwidth estimator
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double cleartime; // if realtime > nc->cleartime, free to go
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// double rate; // seconds / qbyte
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// sequencing variables
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int incoming_unreliable; //dictated by the other end.
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int incoming_sequence;
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int incoming_acknowledged;
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int incoming_reliable_acknowledged; // single bit
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int incoming_reliable_sequence; // single bit, maintained local
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int outgoing_unreliable;
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int outgoing_sequence;
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int reliable_sequence; // single bit
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int last_reliable_sequence; // sequence number of last send
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// reliable staging and holding areas
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sizebuf_t message; // writing buffer to send to server
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qbyte message_buf[MAX_OVERALLMSGLEN];
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//nq has message truncation.
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int reliable_length;
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int reliable_start;
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qbyte reliable_buf[MAX_OVERALLMSGLEN]; // unacked reliable message
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// time and size data to calculate bandwidth
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int outgoing_size[MAX_LATENT];
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double outgoing_time[MAX_LATENT];
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struct huffman_s *compresstable;
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//nq servers must recieve truncated packets.
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int in_fragment_length;
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char in_fragment_buf[MAX_OVERALLMSGLEN];
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int in_fragment_start;
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} netchan_t;
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extern int net_drop; // packets dropped before this one
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void Net_Master_Init(void);
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void Netchan_Init (void);
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int Netchan_Transmit (netchan_t *chan, int length, qbyte *data, int rate);
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void Netchan_OutOfBand (netsrc_t sock, netadr_t *adr, int length, qbyte *data);
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void VARGS Netchan_OutOfBandPrint (netsrc_t sock, netadr_t *adr, char *format, ...) LIKEPRINTF(3);
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void VARGS Netchan_OutOfBandTPrintf (netsrc_t sock, netadr_t *adr, int language, translation_t text, ...);
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qboolean Netchan_Process (netchan_t *chan);
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void Netchan_Setup (netsrc_t sock, netchan_t *chan, netadr_t *adr, int qport);
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unsigned int Net_PextMask(unsigned int protover, qboolean fornq);
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extern cvar_t net_mtu;
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qboolean Netchan_CanPacket (netchan_t *chan, int rate);
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void Netchan_Block (netchan_t *chan, int bytes, int rate);
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qboolean Netchan_CanReliable (netchan_t *chan, int rate);
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#ifdef NQPROT
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enum nqnc_packettype_e
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{
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NQNC_IGNORED,
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NQNC_ACK,
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NQNC_RELIABLE,
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NQNC_UNRELIABLE,
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};
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enum nqnc_packettype_e NQNetChan_Process(netchan_t *chan);
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#endif
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#ifdef HUFFNETWORK
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#define HUFFCRC_QUAKE3 0x286f2e8d
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typedef struct huffman_s huffman_t;
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int Huff_PreferedCompressionCRC (void);
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void Huff_EncryptPacket(sizebuf_t *msg, int offset);
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void Huff_DecryptPacket(sizebuf_t *msg, int offset);
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huffman_t *Huff_CompressionCRC(int crc);
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void Huff_CompressPacket(huffman_t *huff, sizebuf_t *msg, int offset);
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void Huff_DecompressPacket(huffman_t *huff, sizebuf_t *msg, int offset);
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int Huff_GetByte(qbyte *buffer, int *count);
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void Huff_EmitByte(int ch, qbyte *buffer, int *count);
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#endif
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#ifdef NQPROT
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//taken from nq's net.h
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//refer to that for usage info. :)
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#define NETFLAG_LENGTH_MASK 0x0000ffff
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#define NETFLAG_DATA 0x00010000
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#define NETFLAG_ACK 0x00020000
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#define NETFLAG_NAK 0x00040000
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#define NETFLAG_EOM 0x00080000
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#define NETFLAG_UNRELIABLE 0x00100000
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#define NETFLAG_ZLIB 0x00200000 //QEx - payload contains the real (full) packet
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#define NETFLAG_CTL 0x80000000
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#define NQ_NETCHAN_GAMENAME "QUAKE"
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#define NQ_NETCHAN_VERSION 3
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#define NQ_NETCHAN_VERSION_QEX 4 //the rerelease's id, used for nqish-over dtls.
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#define CCREQ_CONNECT 0x01
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#define CCREQ_SERVER_INFO 0x02
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#define CCREQ_PLAYER_INFO 0x03
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#define CCREQ_RULE_INFO 0x04
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#define CCREQ_PROQUAKE_RCON 0x05
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#define CCREP_ACCEPT 0x81
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#define CCREP_REJECT 0x82
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#define CCREP_SERVER_INFO 0x83
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#define CCREP_PLAYER_INFO 0x84
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#define CCREP_RULE_INFO 0x85
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//server->client protocol info
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#define PROTOCOL_VERSION_NQ 15
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#define PROTOCOL_VERSION_H2 19
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#define PROTOCOL_VERSION_NEHD 250
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#define PROTOCOL_VERSION_FITZ 666
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#define PROTOCOL_VERSION_RMQ 999
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#define PROTOCOL_VERSION_DP5 3502
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#define PROTOCOL_VERSION_DP6 3503
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#define PROTOCOL_VERSION_DP7 3504
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#define PROTOCOL_VERSION_BJP1 10000
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#define PROTOCOL_VERSION_BJP2 10001
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#define PROTOCOL_VERSION_BJP3 10002
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#define MOD_PROQUAKE 1
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//#define MOD_PROQUAKE_VERSION (10*3.1) //password feature added
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//#define MOD_PROQUAKE_VERSION (10*3.2) //first 'cheatfree'
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#define MOD_PROQUAKE_VERSION (10*3.3) //no real changes, but w/e, this is the highest we can claim without having serverside issues.
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//#define MOD_PROQUAKE_VERSION (10*3.4) //added nat wait weirdness that's redundant and breaks the whole single-port thing by using two ports on the client too. *sigh*.
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//#define MOD_PROQUAKE_VERSION (10*3.5) //optional cheatfree encryption
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//#define MOD_PROQUAKE_VERSION (10*4.51) //current version
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/*RMQ protocol flags*/
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#define RMQFL_SHORTANGLE (1 << 1)
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#define RMQFL_FLOATANGLE (1 << 2)
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#define RMQFL_24BITCOORD (1 << 3)
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#define RMQFL_FLOATCOORD (1 << 4)
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#define RMQFL_EDICTSCALE (1 << 5)
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#define RMQFL_ALPHASANITY (1 << 6)
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#define RMQFL_INT32COORD (1 << 7)
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#define RMQFL_MOREFLAGS (1 << 31)
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#endif
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int UDP_OpenSocket (int port);
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int UDP6_OpenSocket (int port);
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int IPX_OpenSocket (int port);
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int NetadrToSockadr (netadr_t *a, struct sockaddr_qstorage *s);
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void SockadrToNetadr (struct sockaddr_qstorage *s, int sizeofsockaddr, netadr_t *a);
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qboolean NET_Sleep(float seconds, qboolean stdinissocket);
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