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fteqw/engine/common/netinc.h

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#ifndef NETINC_INCLUDED
#define NETINC_INCLUDED
#ifndef HAVE_PACKET
#ifndef _XBOX
// struct sockaddr
// {
// short sa_family;
// };
#define ntohs BigShort
#define htons BigShort
#define htonl BigLong
#define ntohl BigLong
#endif
/* struct sockaddr_in
{
short sin_family;
unsigned short sin_port;
in_addr sin_addr;
};*/
#define AF_UNSPEC 0
// #define AF_INET 1
#define AF_WEBSOCK 342
struct sockaddr_websocket
{
short sws_family;
char url[64];
};
#elif defined(_WIN32)
#ifdef _XBOX
#include <xtl.h>
#include <WinSockX.h>
#else
#if defined(_MSC_VER) && defined(HAVE_LEGACY)
#define HAVE_IPX
#endif
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <winsock2.h>
#ifdef HAVE_IPX
#include "wsipx.h"
#endif
#include <ws2tcpip.h>
#endif
#include <errno.h>
#if !defined(IPPROTO_IPV6) && !defined(_XBOX)
/*for msvc6*/
#define IPPROTO_IPV6 41
#ifndef EAI_NONAME
#define EAI_NONAME 8
#endif
struct ip6_scope_id
{
union
{
struct
{
u_long Zone : 28;
u_long Level : 4;
};
u_long Value;
};
};
#if !defined(in_addr6)
struct in6_addr
{
u_char s6_addr[16]; /* IPv6 address */
};
#define sockaddr_in6 sockaddr_in6_fixed /*earlier versions of msvc have a sockaddr_in6 which does _not_ match windows, so this *must* be redefined for any non-final msvc releases or it won't work at all*/
typedef struct sockaddr_in6
{
short sin6_family;
u_short sin6_port;
u_long sin6_flowinfo;
struct in6_addr sin6_addr;
union
{
u_long sin6_scope_id;
struct ip6_scope_id sin6_scope_struct;
};
};
struct addrinfo
{
int ai_flags;
int ai_family;
int ai_socktype;
int ai_protocol;
size_t ai_addrlen;
char* ai_canonname;
struct sockaddr * ai_addr;
struct addrinfo * ai_next;
};
#endif
#endif
#ifndef IPV6_V6ONLY
#define IPV6_V6ONLY 27
#endif
#define HAVE_IPV4
#ifdef IPPROTO_IPV6
#define HAVE_IPV6
#endif
#ifndef SOCK_CLOEXEC
#define SOCK_CLOEXEC 0
#endif
#else
#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <netdb.h>
#include <sys/ioctl.h>
#include <sys/uio.h>
#include <arpa/inet.h>
#include <errno.h>
#include <unistd.h>
#ifdef sun
#include <sys/filio.h>
#endif
#ifdef UNIXSOCKETS
#include <sys/un.h>
#endif
#ifdef NeXT
#include <libc.h>
#endif
#ifdef __linux__
//requires linux 2.6.27 up (and equivelent libc)
//note that BSD does tend to support the api, but emulated.
//this works around the select FD limit, and supposedly has better performance.
#include <sys/epoll.h>
#ifdef EPOLL_CLOEXEC
#define HAVE_EPOLL
//#else too old, probably android...
#endif
#endif
#if defined(__MORPHOS__) && !defined(ixemul)
#define closesocket CloseSocket
#define ioctlsocket IoctlSocket
#else
#define closesocket close
#define ioctlsocket ioctl
#endif
#if defined(AF_INET)
#define HAVE_IPV4
#endif
#if defined(AF_INET6)
#define HAVE_IPV6
#endif
// #if defined(AF_IPX) && defined(HAVE_LEGACY)
// #include <netipx/ipx.h>
// #define HAVE_IPX
// #endif
#define SOCKET int
#ifndef SOCK_CLOEXEC
#define SOCK_CLOEXEC 0
#endif
#endif
#if defined(_WIN32)
#define neterrno() WSAGetLastError()
//this madness is because winsock defines its own errors instead of using system error codes.
//*AND* microsoft then went and defined names for all the unix ones too... with different values! oh the insanity of it all!
#define NET_EINTR WSAEINTR
#define NET_EWOULDBLOCK WSAEWOULDBLOCK
#define NET_EINPROGRESS WSAEINPROGRESS
#define NET_EMSGSIZE WSAEMSGSIZE
#define NET_ECONNRESET WSAECONNRESET
#define NET_ECONNABORTED WSAECONNABORTED
#define NET_ECONNREFUSED WSAECONNREFUSED
#define NET_ETIMEDOUT WSAETIMEDOUT
#define NET_ENOTCONN WSAENOTCONN
#define NET_EACCES WSAEACCES
#define NET_EADDRNOTAVAIL WSAEADDRNOTAVAIL
#define NET_ENETUNREACH WSAENETUNREACH
#define NET_EAFNOSUPPORT WSAEAFNOSUPPORT
#elif defined(__MORPHOS__) && !defined(ixemul)
#define neterrno() Errno()
#else
#define neterrno() errno
#endif
#ifndef NET_EWOULDBLOCK
//assume unix codes instead, so our prefix still works.
#define NET_EINTR EINTR
#define NET_EWOULDBLOCK EWOULDBLOCK
#define NET_EINPROGRESS EINPROGRESS
#define NET_EMSGSIZE EMSGSIZE
#define NET_ECONNRESET ECONNRESET
#define NET_ECONNABORTED ECONNABORTED
#define NET_ECONNREFUSED ECONNREFUSED
#define NET_ETIMEDOUT ETIMEDOUT
#define NET_ENOTCONN ENOTCONN
#define NET_EACCES EACCES
#define NET_EADDRNOTAVAIL EADDRNOTAVAIL
#define NET_ENETUNREACH ENETUNREACH
#define NET_EAFNOSUPPORT EAFNOSUPPORT
#endif
#ifndef INVALID_SOCKET
#define INVALID_SOCKET -1
#endif
#ifndef MSG_NOSIGNAL
#define MSG_NOSIGNAL 0 //available on linux, no idea about other unixes. don't bug out too much... (d)tls needs this to not get constant SIGPIPE errors
#endif
#ifndef INADDR_LOOPBACK
#define INADDR_LOOPBACK 0x7f000001
#endif
#if defined(FTE_TARGET_WEB)
#undef HAVE_IPV4
#undef HAVE_IPV6
#undef HAVE_IPX
#endif
#if 1//def SUPPORT_ICE
struct icecandinfo_s
{
char candidateid[64];
char addr[64]; //v4/v6/fqdn. fqdn should prefer ipv6
int port; //native endian...
int transport; //0=udp. other values not supported
int foundation; //to figure out...
int component; //1-based. allows rtp+rtcp in a single ICE... we only support one.
int priority; //some random value...
enum
{
ICE_HOST=0,
ICE_SRFLX=1, //Server Reflexive (from stun, etc)
ICE_PRFLX=2, //Peer Reflexive
ICE_RELAY=3,
} type; //says what sort of proxy is used.
char reladdr[64]; //when proxied, this is our local info
int relport;
int generation; //for ice restarts. starts at 0.
int network; //which network device this comes from.
};
enum iceproto_e
{
ICEP_INVALID, //not allowed..
ICEP_QWSERVER, //we're server side
ICEP_QWCLIENT, //we're client side
ICEP_VOICE, //speex. requires client.
ICEP_VIDEO //err... REALLY?!?!?
};
enum icemode_e
{
ICEM_RAW, //not actually interactive beyond a simple handshake.
ICEM_ICE, //rfc5245. meant to be able to holepunch, but not implemented properly yet.
ICEM_WEBRTC, //IP+UDP+((ICE/STUN/SDP)+(DTLS+SCTP))... no more layers? :o
};
enum icestate_e
{
ICE_INACTIVE, //idle.
ICE_FAILED,
ICE_GATHERING,
ICE_CONNECTING, //exchanging pings.
ICE_CONNECTED //media is flowing, supposedly. sending keepalives.
};
struct icestate_s;
#define ICE_API_CURRENT "Internet Connectivity Establishment 0.0"
typedef struct
{
struct icestate_s *(QDECL *Create)(void *module, const char *conname, const char *peername, enum icemode_e mode, enum iceproto_e proto, qboolean initiator); //doesn't start pinging anything.
qboolean (QDECL *Set)(struct icestate_s *con, const char *prop, const char *value);
qboolean (QDECL *Get)(struct icestate_s *con, const char *prop, char *value, size_t valuesize);
struct icecandinfo_s *(QDECL *GetLCandidateInfo)(struct icestate_s *con); //retrieves candidates that need reporting to the peer.
void (QDECL *AddRCandidateInfo)(struct icestate_s *con, struct icecandinfo_s *cand); //stuff that came from the peer.
void (QDECL *Close)(struct icestate_s *con, qboolean force); //bye then.
void (QDECL *CloseModule)(void *module); //closes all unclosed connections, with warning.
qboolean (QDECL *GetLCandidateSDP)(struct icestate_s *con, char *out, size_t valuesize); //retrieves candidates that need reporting to the peer.
struct icestate_s *(QDECL *Find)(void *module, const char *conname);
} icefuncs_t;
extern icefuncs_t iceapi;
extern cvar_t net_ice_broker;
#endif
#ifdef HAVE_EPOLL
typedef struct epollctx_s
{
void (*Polled) (struct epollctx_s *ctx, unsigned int events);
} epollctx_t;
#endif
//address flags
#define ADDR_NATPMP (1u<<0)
#define ADDR_UPNPIGP (1u<<1)
#define ADDR_REFLEX (1u<<2) //as reported by some external server.
#define FTENET_ADDRTYPES 2
typedef struct ftenet_generic_connection_s {
char name[MAX_QPATH];
int (*GetLocalAddresses)(struct ftenet_generic_connection_s *con, unsigned int *adrflags, netadr_t *addresses, const char **adrparams, int maxaddresses);
qboolean (*ChangeLocalAddress)(struct ftenet_generic_connection_s *con, const char *addressstring, netadr_t *newadr);
qboolean (*GetPacket)(struct ftenet_generic_connection_s *con);
neterr_t (*SendPacket)(struct ftenet_generic_connection_s *con, int length, const void *data, netadr_t *to);
void (*Close)(struct ftenet_generic_connection_s *con);
#if defined(HAVE_PACKET) && !defined(HAVE_EPOLL)
int (*SetFDSets) (struct ftenet_generic_connection_s *con, fd_set *readfdset, fd_set *writefdset); /*set for connections which have multiple sockets (ie: listening tcp connections)*/
#endif
void (*PrintStatus)(struct ftenet_generic_connection_s *con);
netproto_t prot; //if there's some special weirdness
netadrtype_t addrtype[FTENET_ADDRTYPES]; //which address families it accepts
qboolean islisten;
int connum;
struct ftenet_connections_s *owner;
#ifdef HAVE_EPOLL
epollctx_t epoll;
#endif
#ifdef HAVE_PACKET
SOCKET thesocket;
#else
int thesocket;
#endif
} ftenet_generic_connection_t;
enum hashvalidation_e
{
VH_UNSUPPORTED, //library not loaded (bad but not malicious)
VH_AUTHORITY_UNKNOWN, //don't know who signed it / untrusted (bad but probably not malicious)
VH_INCORRECT, //signature is wrong for that authority (bad, probably maliciously so)
VH_CORRECT //all is well.
};
struct dtlsfuncs_s;
typedef struct dtlscred_s
{
struct dtlslocalcred_s
{
void *cert;
size_t certsize;
void *key;
size_t keysize;
} local;
struct dtlspeercred_s
{
const char *name; //cert must match this if specified
hashfunc_t *hash; //if set peer's cert MUST match the specified digest (with this hash function)
qbyte digest[DIGEST_MAXSIZE];
} peer;
} dtlscred_t;
typedef struct dtlsfuncs_s
{
void *(*CreateContext)(const dtlscred_t *credinfo, void *cbctx, neterr_t(*push)(void *cbctx, const qbyte *data, size_t datasize), qboolean isserver); //the certificate to advertise.
qboolean (*CheckConnection)(void *cbctx, void *peeraddr, size_t peeraddrsize, void *indata, size_t insize, neterr_t(*push)(void *cbctx, const qbyte *data, size_t datasize), void (*EstablishTrueContext)(void **cbctx, void *state));
void (*DestroyContext)(void *ctx);
neterr_t (*Transmit)(void *ctx, const qbyte *data, size_t datasize);
neterr_t (*Received)(void *ctx, sizebuf_t *message); //operates in-place...
neterr_t (*Timeouts)(void *ctx);
int (*GetPeerCertificate)(void *ctx, enum certprops_e prop, char *out, size_t outsize);
qboolean (*GenTempCertificate)(const char *subject, struct dtlslocalcred_s *cred);
} dtlsfuncs_t;
#ifdef HAVE_DTLS
const dtlsfuncs_t *DTLS_InitServer(void);
const dtlsfuncs_t *DTLS_InitClient(void);
#endif
typedef struct ftecrypto_s
{
const char *drivername;
//tlsey things
vfsfile_t *(*OpenStream)(const char *hostname, vfsfile_t *source, qboolean isserver); //establish a tls connection around a tcp stream
int (*GetChannelBinding)(vfsfile_t *vf, qbyte *binddata, size_t *bindsize); //returns -1 if functions don't match those from OpenStream
//dtls entry points
const struct dtlsfuncs_s *(*DTLS_InitClient)(void); //should always return something, if implemented.
const struct dtlsfuncs_s *(*DTLS_InitServer)(void); //returns NULL if there's no cert available.
//digital signature stuff. note: uses sha2_512
enum hashvalidation_e (*VerifyHash)(const qbyte *hashdata, size_t hashsize, const qbyte *certdata, size_t certsize, const qbyte *signdata, size_t signsize); //expect the cert in PEM format.
int (*GenerateSignature)(const qbyte *hashdata, size_t hashsize, qbyte *signdata, size_t signsizemax);
} ftecrypto_t;
#define cryptolib_count 6
extern ftecrypto_t crypto_sspi, crypto_gnutls;
extern ftecrypto_t *cryptolib[cryptolib_count];
#define MAX_CONNECTIONS 8
typedef struct ftenet_connections_s
{
qboolean islisten;
unsigned int packetsin;
unsigned int packetsout;
unsigned int bytesin;
unsigned int bytesout;
unsigned int timemark;
float packetsinrate;
float packetsoutrate;
float bytesinrate;
float bytesoutrate;
ftenet_generic_connection_t *conn[MAX_CONNECTIONS];
void (*ReadGamePacket) (void);
#ifdef HAVE_DTLS
struct dtlspeer_s *dtls; //linked list. linked lists are shit, but at least it keeps pointers valid when things are resized.
const dtlsfuncs_t *dtlsfuncs;
#endif
struct ftenet_delayed_packet_s
{
unsigned int sendtime; //in terms of Sys_Milliseconds()
struct ftenet_delayed_packet_s *next;
netadr_t dest;
size_t cursize;
qbyte data[1];
} *delayed_packets;
netadr_t srflx[2]; //ipv4, ipv6
unsigned int srflx_tid[3]; //to verify the above.
} ftenet_connections_t;
void ICE_Tick(void);
qboolean ICE_WasStun(ftenet_connections_t *col);
void QDECL ICE_AddLCandidateConn(ftenet_connections_t *col, netadr_t *addr, int type);
void QDECL ICE_AddLCandidateInfo(struct icestate_s *con, netadr_t *adr, int adrno, int type);
ftenet_generic_connection_t *FTENET_ICE_EstablishConnection(ftenet_connections_t *col, const char *address, netadr_t adr, const struct dtlspeercred_s *peerinfo);
enum icemsgtype_s
{ //shared by rtcpeers+broker
ICEMSG_PEERLOST=0, //other side dropped connection
ICEMSG_GREETING=1, //master telling us our unique game name
ICEMSG_NEWPEER=2, //relay established, send an offer now.
ICEMSG_OFFER=3, //peer->peer - peer's offer or answer details
ICEMSG_CANDIDATE=4, //peer->peer - candidate updates. may arrive late as new ones are discovered.
ICEMSG_ACCEPT=5, //go go go (response from offer)
ICEMSG_SERVERINFO=6,//server->broker (for advertising the server properly)
ICEMSG_SERVERUPDATE=7,//broker->browser (for querying available server lists)
ICEMSG_NAMEINUSE=8, //requested resource is unavailable.
};
enum websocketpackettype_e
{ //websocket packet types, used by both our tcp/http/broker/etc server and our ice client.
WS_PACKETTYPE_CONTINUATION=0,
WS_PACKETTYPE_TEXTFRAME=1,
WS_PACKETTYPE_BINARYFRAME=2,
WS_PACKETTYPE_CLOSE=8,
WS_PACKETTYPE_PING=9,
WS_PACKETTYPE_PONG=10,
};
ftenet_connections_t *FTENET_CreateCollection(qboolean listen, void (*ReadPacket) (void));
void FTENET_CloseCollection(ftenet_connections_t *col);
qboolean FTENET_AddToCollection(struct ftenet_connections_s *col, const char *name, const char *address, netadrtype_t addrtype, netproto_t addrprot);
int NET_EnumerateAddresses(ftenet_connections_t *collection, struct ftenet_generic_connection_s **con, unsigned int *adrflags, netadr_t *addresses, const char **adrparams, int maxaddresses);
void *TLS_GetKnownCertificate(const char *certname, size_t *size);
void *Auth_GetKnownCertificate(const char *certname, size_t *size);
vfsfile_t *FS_OpenSSL(const char *hostname, vfsfile_t *source, qboolean server);
int TLS_GetChannelBinding(vfsfile_t *stream, qbyte *data, size_t *datasize); //datasize should be preinitialised to the max length allowed. -1 for not implemented. 0 for peer problems. 1 for success
#ifdef HAVE_PACKET
vfsfile_t *FS_WrapTCPSocket(SOCKET socket, qboolean conpending, const char *peername); //conpending allows us to reject any writes until the connection has succeeded. considers the socket owned (so be sure to stop using the direct socket at least before the VFS_CLOSE call).
#endif
vfsfile_t *FS_OpenTCP(const char *name, int defaultport, qboolean assumetls);
#endif //NETINC_INCLUDED
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