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fteqw/engine/common/net.h
Spoike 00885ffd27 Fix q2 cinematics (was giving black screens). 
Add support for DP_SV_CLIENTCAMERA (primarily to work around an rmq bug).
Now pointing the engine at the shadowy updates.triptohell.info domain (with a self-signed cert), so that we can give fte.triptohell.info a proper cert that browsers will trust. Still need to make a stable release some time before that can happen.
Make sure q2 gamecode updates can work, so win64/linux64 can actually run q2 now (using yamagi's).




git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@5467 fc73d0e0-1445-4013-8a0c-d673dee63da5
2019-06-05 20:48:06 +00:00

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