/*
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_wins.c
struct sockaddr;
#include "quakedef.h"
#include "netinc.h"
#ifdef _WIN32
#define USE_GETHOSTNAME_LOCALLISTING
#endif
netadr_t net_local_cl_ipadr; //still used to match local ui requests (quake/gamespy), and to generate ip reports for q3 servers (which is probably pointless).
netadr_t net_from;
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
qbyte net_message_buffer[MAX_OVERALLMSGLEN];
#ifdef _WIN32
WSADATA winsockdata;
#endif
#ifdef IPPROTO_IPV6
#ifdef _WIN32
int (WINAPI *pgetaddrinfo) (
const char* nodename,
const char* servname,
const struct addrinfo* hints,
struct addrinfo** res
);
void (WSAAPI *pfreeaddrinfo) (struct addrinfo*);
#else
#define pgetaddrinfo getaddrinfo
#define pfreeaddrinfo freeaddrinfo
/*int (*pgetaddrinfo)
(
const char* nodename,
const char* servname,
const struct addrinfo* hints,
struct addrinfo** res
);
void (*pfreeaddrinfo) (struct addrinfo*);
*/
#endif
#endif
#if defined(HAVE_IPV4) && !defined(CLIENTONLY)
#define HAVE_NATPMP
#endif
void NET_GetLocalAddress (int socket, netadr_t *out);
//int TCP_OpenListenSocket (const char *localip, int port);
#ifdef IPPROTO_IPV6
int UDP6_OpenSocket (int port, qboolean bcast);
#endif
#ifdef USEIPX
void IPX_CloseSocket (int socket);
#endif
cvar_t net_hybriddualstack = CVAR("net_hybriddualstack", "1");
cvar_t net_fakeloss = CVARFD("net_fakeloss", "0", CVAR_CHEAT, "Simulates packetloss in both receiving and sending, on a scale from 0 to 1.");
extern cvar_t sv_public, sv_listen_qw, sv_listen_nq, sv_listen_dp, sv_listen_q3;
static qboolean allowconnects = false;
#define FTENET_ADDRTYPES 2
typedef struct ftenet_generic_connection_s {
char name[MAX_QPATH];
int (*GetLocalAddress)(struct ftenet_generic_connection_s *con, netadr_t *local, int adridx);
qboolean (*ChangeLocalAddress)(struct ftenet_generic_connection_s *con, const char *newaddress);
qboolean (*GetPacket)(struct ftenet_generic_connection_s *con);
qboolean (*SendPacket)(struct ftenet_generic_connection_s *con, int length, void *data, netadr_t to);
void (*Close)(struct ftenet_generic_connection_s *con);
#ifdef HAVE_PACKET
int (*SetReceiveFDSet) (struct ftenet_generic_connection_s *con, fd_set *fdset); /*set for connections which have multiple sockets (ie: listening tcp connections)*/
#endif
netadrtype_t addrtype[FTENET_ADDRTYPES];
qboolean islisten;
int thesocket;
} ftenet_generic_connection_t;
#define MAX_LOOPBACK 8
typedef struct
{
qbyte data[MAX_OVERALLMSGLEN];
int datalen;
} loopmsg_t;
typedef struct
{
qboolean inited;
loopmsg_t msgs[MAX_LOOPBACK];
int get, send;
} loopback_t;
loopback_t loopbacks[2];
//=============================================================================
int NetadrToSockadr (netadr_t *a, struct sockaddr_qstorage *s)
{
switch(a->type)
{
#ifdef HAVE_WEBSOCKCL
case NA_WEBSOCKET:
memset (s, 0, sizeof(struct sockaddr_websocket));
((struct sockaddr_websocket*)s)->sws_family = AF_WEBSOCK;
memcpy(((struct sockaddr_websocket*)s)->url, a->address.websocketurl, sizeof(((struct sockaddr_websocket*)s)->url));
return sizeof(struct sockaddr_websocket);
#endif
#ifdef HAVE_IPV4
case NA_BROADCAST_IP:
memset (s, 0, sizeof(struct sockaddr_in));
((struct sockaddr_in*)s)->sin_family = AF_INET;
*(int *)&((struct sockaddr_in*)s)->sin_addr = 0xffffffff;//INADDR_BROADCAST;
((struct sockaddr_in*)s)->sin_port = a->port;
return sizeof(struct sockaddr_in);
case NA_TCP:
case NA_IP:
memset (s, 0, sizeof(struct sockaddr_in));
((struct sockaddr_in*)s)->sin_family = AF_INET;
*(int *)&((struct sockaddr_in*)s)->sin_addr = *(int *)&a->address.ip;
((struct sockaddr_in*)s)->sin_port = a->port;
return sizeof(struct sockaddr_in);
#endif
#ifdef IPPROTO_IPV6
case NA_BROADCAST_IP6:
memset (s, 0, sizeof(struct sockaddr_in));
((struct sockaddr_in6*)s)->sin6_family = AF_INET6;
memset((int *)&((struct sockaddr_in6*)s)->sin6_addr, 0, sizeof(*(int *)&((struct sockaddr_in6*)s)->sin6_addr));
((struct sockaddr_in6*)s)->sin6_addr.s6_addr[0] = 0xff;
((struct sockaddr_in6*)s)->sin6_addr.s6_addr[1] = 0x02;
((struct sockaddr_in6*)s)->sin6_addr.s6_addr[15] = 0x01;
((struct sockaddr_in6*)s)->sin6_port = a->port;
return sizeof(struct sockaddr_in6);
case NA_TCPV6:
case NA_IPV6:
memset (s, 0, sizeof(struct sockaddr_in6));
((struct sockaddr_in6*)s)->sin6_family = AF_INET6;
memcpy(&((struct sockaddr_in6*)s)->sin6_addr, a->address.ip6, sizeof(struct in6_addr));
((struct sockaddr_in6*)s)->sin6_port = a->port;
return sizeof(struct sockaddr_in6);
#endif
#ifdef USEIPX
case NA_IPX:
((struct sockaddr_ipx *)s)->sa_family = AF_IPX;
memcpy(((struct sockaddr_ipx *)s)->sa_netnum, &a->address.ipx[0], 4);
memcpy(((struct sockaddr_ipx *)s)->sa_nodenum, &a->address.ipx[4], 6);
((struct sockaddr_ipx *)s)->sa_socket = a->port;
return sizeof(struct sockaddr_ipx);
case NA_BROADCAST_IPX:
memset (s, 0, sizeof(struct sockaddr_ipx));
((struct sockaddr_ipx*)s)->sa_family = AF_IPX;
memset(&((struct sockaddr_ipx*)s)->sa_netnum, 0, 4);
memset(&((struct sockaddr_ipx*)s)->sa_nodenum, 0xff, 6);
((struct sockaddr_ipx*)s)->sa_socket = a->port;
return sizeof(struct sockaddr_ipx);
#endif
default:
Sys_Error("Bad type - needs fixing");
return 0;
}
}
void SockadrToNetadr (struct sockaddr_qstorage *s, netadr_t *a)
{
a->connum = 0;
switch (((struct sockaddr*)s)->sa_family)
{
#ifdef HAVE_WEBSOCKCL
case AF_WEBSOCK:
a->type = NA_WEBSOCKET;
memcpy(a->address.websocketurl, ((struct sockaddr_websocket*)s)->url, sizeof(a->address.websocketurl));
a->port = 0;
break;
#endif
#ifdef HAVE_IPV4
case AF_INET:
a->type = NA_IP;
*(int *)&a->address.ip = ((struct sockaddr_in *)s)->sin_addr.s_addr;
a->port = ((struct sockaddr_in *)s)->sin_port;
break;
#endif
#ifdef IPPROTO_IPV6
case AF_INET6:
a->type = NA_IPV6;
memcpy(&a->address.ip6, &((struct sockaddr_in6 *)s)->sin6_addr, sizeof(a->address.ip6));
a->port = ((struct sockaddr_in6 *)s)->sin6_port;
break;
#endif
#ifdef USEIPX
case AF_IPX:
a->type = NA_IPX;
*(int *)a->address.ip = 0xffffffff;
memcpy(&a->address.ipx[0], ((struct sockaddr_ipx *)s)->sa_netnum, 4);
memcpy(&a->address.ipx[4], ((struct sockaddr_ipx *)s)->sa_nodenum, 6);
a->port = ((struct sockaddr_ipx *)s)->sa_socket;
break;
#endif
default:
Con_Printf("SockadrToNetadr: bad socket family - %i", ((struct sockaddr*)s)->sa_family);
case AF_UNSPEC:
memset(a, 0, sizeof(*a));
a->type = NA_INVALID;
break;
}
}
qboolean NET_CompareAdr (netadr_t a, netadr_t b)
{
if (a.type != b.type)
{
int i;
if (a.type == NA_IP && b.type == NA_IPV6)
{
for (i = 0; i < 10; i++)
if (b.address.ip6[i] != 0)
return false; //only matches if they're 0s, otherwise its not an ipv4 address there
for (; i < 12; i++)
if (b.address.ip6[i] != 0xff && b.address.ip6[i] != 0x00) //0x00 is depricated
return false; //only matches if they're 0s or ffs, otherwise its not an ipv4 address there
for (i = 0; i < 4; i++)
{
if (a.address.ip[i] != b.address.ip6[12+i])
return false; //mask doesn't match
}
return true; //its an ipv4 address in there, the mask matched the whole way through
}
if (a.type == NA_IPV6 && b.type == NA_IP)
{
for (i = 0; i < 10; i++)
if (a.address.ip6[i] != 0)
return false; //only matches if they're 0s, otherwise its not an ipv4 address there
for (; i < 12; i++)
if (a.address.ip6[i] != 0xff && a.address.ip6[i] != 0x00) //0x00 is depricated
return false; //only matches if they're 0s or ffs, otherwise its not an ipv4 address there
for (i = 0; i < 4; i++)
{
if (a.address.ip6[12+i] != b.address.ip[i])
return false; //mask doesn't match
}
return true; //its an ipv4 address in there, the mask matched the whole way through
}
return false;
}
if (a.type == NA_LOOPBACK)
return true;
#ifdef HAVE_WEBSOCKCL
if (a.type == NA_WEBSOCKET)
{
if (!strcmp(a.address.websocketurl, a.address.websocketurl) && a.port == b.port)
return true;
return false;
}
#endif
#ifdef HAVE_IPV4
if (a.type == NA_IP || a.type == NA_BROADCAST_IP || a.type == NA_TCP)
{
if ((memcmp(a.address.ip, b.address.ip, sizeof(a.address.ip)) == 0) && a.port == b.port)
return true;
return false;
}
#endif
#ifdef IPPROTO_IPV6
if (a.type == NA_IPV6 || a.type == NA_BROADCAST_IP6 || a.type == NA_TCPV6)
{
if ((memcmp(a.address.ip6, b.address.ip6, sizeof(a.address.ip6)) == 0) && a.port == b.port)
return true;
return false;
}
#endif
#ifdef USEIPX
if (a.type == NA_IPX || a.type == NA_BROADCAST_IPX)
{
if ((memcmp(a.address.ipx, b.address.ipx, sizeof(a.address.ipx)) == 0) && a.port == b.port)
return true;
return false;
}
#endif
#ifdef IRCCONNECT
if (a.type == NA_IRC)
{
if (!strcmp(a.address.irc.user, b.address.irc.user))
return true;
return false;
}
#endif
Sys_Error("NET_CompareAdr: Bad address type");
return false;
}
/*
===================
NET_CompareBaseAdr
Compares without the port
===================
*/
qboolean NET_CompareBaseAdr (netadr_t a, netadr_t b)
{
if (a.type != b.type)
return false;
if (a.type == NA_LOOPBACK)
return true;
#ifdef HAVE_IPV4
if (a.type == NA_IP || a.type == NA_TCP)
{
if ((memcmp(a.address.ip, b.address.ip, sizeof(a.address.ip)) == 0))
return true;
return false;
}
#endif
#ifdef IPPROTO_IPV6
if (a.type == NA_IPV6 || a.type == NA_BROADCAST_IP6)
{
if ((memcmp(a.address.ip6, b.address.ip6, 16) == 0))
return true;
return false;
}
#endif
#ifdef USEIPX
if (a.type == NA_IPX)
{
if ((memcmp(a.address.ipx, b.address.ipx, 10) == 0))
return true;
return false;
}
#endif
#ifdef IRCCONNECT
if (a.type == NA_IRC)
{
if (!strcmp(a.address.irc.user, b.address.irc.user))
return true;
return false;
}
#endif
Sys_Error("NET_CompareBaseAdr: Bad address type");
return false;
}
qboolean NET_AddressSmellsFunny(netadr_t a)
{
#ifdef IPPROTO_IPV6
int i;
#endif
//rejects certain blacklisted addresses
switch(a.type)
{
#ifdef HAVE_IPV4
case NA_BROADCAST_IP:
case NA_IP:
//reject localhost
if (a.address.ip[0] == 127)// && a.address.ip[1] == 0 && a.address.ip[2] == 0 && a.address.ip[3] == 1 )
return true;
//'this' network (not an issue, but lets reject it anyway)
if (a.address.ip[0] == 0 && a.address.ip[1] == 0 && a.address.ip[2] == 0 && a.address.ip[3] == 0 )
return true;
//reject any broadcasts
if (a.address.ip[0] == 255 && a.address.ip[1] == 255 && a.address.ip[2] == 255 && a.address.ip[3] == 0 )
return true;
//not much else I can reject
return false;
#endif
#ifdef IPPROTO_IPV6
case NA_BROADCAST_IP6:
case NA_IPV6:
//reject [::XXXX] (this includes obsolete ipv4-compatible (not ipv4 mapped), and localhost)
for (i = 0; i < 12; i++)
if (a.address.ip6[i])
break;
if (i == 12)
return true;
return false;
#endif
#ifdef USEIPX
//no idea how this protocol's addresses work
case NA_BROADCAST_IPX:
case NA_IPX:
return false;
#endif
case NA_LOOPBACK:
return false;
default:
return true;
}
}
char *NET_AdrToString (char *s, int len, netadr_t a)
{
char *rs = s;
char *p;
int i;
#ifdef IPPROTO_IPV6
qboolean doneblank;
#endif
switch(a.type)
{
#ifdef HAVE_WEBSOCKCL
case NA_WEBSOCKET:
Q_strncpyz(s, a.address.websocketurl, len);
break;
#endif
#ifdef TCPCONNECT
case NA_TCP:
if (len < 7)
return "?";
snprintf (s, len, "tcp://");
s += 6;
len -= 6;
//fallthrough
#endif
#ifdef HAVE_IPV4
case NA_BROADCAST_IP:
case NA_IP:
if (a.port)
{
snprintf (s, len, "%i.%i.%i.%i:%i",
a.address.ip[0],
a.address.ip[1],
a.address.ip[2],
a.address.ip[3],
ntohs(a.port));
}
else
{
snprintf (s, len, "%i.%i.%i.%i",
a.address.ip[0],
a.address.ip[1],
a.address.ip[2],
a.address.ip[3]);
}
break;
#endif
#ifdef TCPCONNECT
case NA_TCPV6:
if (len < 7)
return "?";
snprintf (s, len, "tcp://");
s += 6;
len -= 6;
//fallthrough
#endif
#ifdef IPPROTO_IPV6
case NA_BROADCAST_IP6:
case NA_IPV6:
if (!*(int*)&a.address.ip6[0] &&
!*(int*)&a.address.ip6[4] &&
!*(short*)&a.address.ip6[8] &&
*(short*)&a.address.ip6[10] == (short)0xffff)
{
if (a.port)
snprintf (s, len, "%i.%i.%i.%i:%i",
a.address.ip6[12],
a.address.ip6[13],
a.address.ip6[14],
a.address.ip6[15],
ntohs(a.port));
else
snprintf (s, len, "%i.%i.%i.%i",
a.address.ip6[12],
a.address.ip6[13],
a.address.ip6[14],
a.address.ip6[15]);
break;
}
*s = 0;
doneblank = false;
p = s;
snprintf (s, len-strlen(s), "[");
p += strlen(p);
for (i = 0; i < 16; i+=2)
{
if (doneblank!=true && a.address.ip6[i] == 0 && a.address.ip6[i+1] == 0)
{
if (!doneblank)
{
snprintf (p, len-strlen(s), "::");
p += strlen(p);
doneblank = 2;
}
}
else
{
if (doneblank==2)
doneblank = true;
else if (i != 0)
{
snprintf (p, len-strlen(s), ":");
p += strlen(p);
}
if (a.address.ip6[i+0])
{
snprintf (p, len-strlen(s), "%x%02x",
a.address.ip6[i+0],
a.address.ip6[i+1]);
}
else
{
snprintf (p, len-strlen(s), "%x",
a.address.ip6[i+1]);
}
p += strlen(p);
}
}
snprintf (p, len-strlen(s), "]:%i",
ntohs(a.port));
break;
#endif
#ifdef USEIPX
case NA_BROADCAST_IPX:
case NA_IPX:
snprintf (s, len, "%02x%02x%02x%02x:%02x%02x%02x%02x%02x%02x:%i",
a.address.ipx[0],
a.address.ipx[1],
a.address.ipx[2],
a.address.ipx[3],
a.address.ipx[4],
a.address.ipx[5],
a.address.ipx[6],
a.address.ipx[7],
a.address.ipx[8],
a.address.ipx[9],
ntohs(a.port));
break;
#endif
case NA_LOOPBACK:
snprintf (s, len, "QLoopBack");
break;
#ifdef IRCCONNECT
case NA_IRC:
if (*a.address.irc.channel)
snprintf (s, len, "irc://%s@%s", a.address.irc.user, a.address.irc.channel);
else
snprintf (s, len, "irc://%s", a.address.irc.user);
break;
#endif
default:
snprintf (s, len, "invalid netadr_t type");
// Sys_Error("NET_AdrToString: Bad netadr_t type");
}
return rs;
}
char *NET_BaseAdrToString (char *s, int len, netadr_t a)
{
int i, doneblank;
char *p;
switch(a.type)
{
case NA_BROADCAST_IP:
case NA_IP:
snprintf (s, len, "%i.%i.%i.%i",
a.address.ip[0],
a.address.ip[1],
a.address.ip[2],
a.address.ip[3]);
break;
case NA_TCP:
snprintf (s, len, "tcp://%i.%i.%i.%i",
a.address.ip[0],
a.address.ip[1],
a.address.ip[2],
a.address.ip[3]);
break;
#ifdef IPPROTO_IPV6
case NA_BROADCAST_IP6:
case NA_IPV6:
if (!*(int*)&a.address.ip6[0] &&
!*(int*)&a.address.ip6[4] &&
!*(short*)&a.address.ip6[8] &&
*(short*)&a.address.ip6[10] == (short)0xffff)
{
snprintf (s, len, "%i.%i.%i.%i",
a.address.ip6[12],
a.address.ip6[13],
a.address.ip6[14],
a.address.ip6[15]);
break;
}
*s = 0;
doneblank = false;
p = s;
for (i = 0; i < 16; i+=2)
{
if (doneblank!=true && a.address.ip6[i] == 0 && a.address.ip6[i+1] == 0)
{
if (!doneblank)
{
snprintf (p, len-strlen(s), "::");
p += strlen(p);
doneblank = 2;
}
}
else
{
if (doneblank==2)
doneblank = true;
else if (i != 0)
{
snprintf (p, len-strlen(s), ":");
p += strlen(p);
}
if (a.address.ip6[i+0])
{
snprintf (p, len-strlen(s), "%x%02x",
a.address.ip6[i+0],
a.address.ip6[i+1]);
}
else
{
snprintf (p, len-strlen(s), "%x",
a.address.ip6[i+1]);
}
p += strlen(p);
}
}
break;
#endif
#ifdef USEIPX
case NA_BROADCAST_IPX:
case NA_IPX:
snprintf (s, len, "%02x%02x%02x%02x:%02x%02x%02x%02x%02x%02x",
a.address.ipx[0],
a.address.ipx[1],
a.address.ipx[2],
a.address.ipx[3],
a.address.ipx[4],
a.address.ipx[5],
a.address.ipx[6],
a.address.ipx[7],
a.address.ipx[8],
a.address.ipx[9]);
break;
#endif
case NA_LOOPBACK:
snprintf (s, len, "LocalHost");
break;
#ifdef IRCCONNECT
case NA_IRC:
snprintf (s, len, "irc://%s", a.address.irc.user);
break;
#endif
default:
Sys_Error("NET_BaseAdrToString: Bad netadr_t type");
}
return s;
}
/*
=============
NET_StringToAdr
idnewt
idnewt:28000
192.246.40.70
192.246.40.70:28000
any form of ipv6, including port number.
=============
*/
qboolean NET_StringToSockaddr (const char *s, int defaultport, struct sockaddr_qstorage *sadr, int *addrfamily, int *addrsize)
{
struct hostent *h;
char *colon;
char copy[128];
if (!(*s))
return false;
memset (sadr, 0, sizeof(*sadr));
#ifdef USEIPX
if ((strlen(s) >= 23) && (s[8] == ':') && (s[21] == ':')) // check for an IPX address
{
unsigned int val;
((struct sockaddr_ipx *)sadr)->sa_family = AF_IPX;
#define DO(src,dest) \
copy[0] = s[src]; \
copy[1] = s[src + 1]; \
sscanf (copy, "%x", &val); \
((struct sockaddr_ipx *)sadr)->dest = val
copy[2] = 0;
DO(0, sa_netnum[0]);
DO(2, sa_netnum[1]);
DO(4, sa_netnum[2]);
DO(6, sa_netnum[3]);
DO(9, sa_nodenum[0]);
DO(11, sa_nodenum[1]);
DO(13, sa_nodenum[2]);
DO(15, sa_nodenum[3]);
DO(17, sa_nodenum[4]);
DO(19, sa_nodenum[5]);
sscanf (&s[22], "%u", &val);
#undef DO
((struct sockaddr_ipx *)sadr)->sa_socket = htons((unsigned short)val);
if (addrfamily)
*addrfamily = AF_IPX;
if (addrsize)
*addrsize = sizeof(struct sockaddr_ipx);
}
else
#endif
#ifdef IPPROTO_IPV6
if (pgetaddrinfo)
{
struct addrinfo *addrinfo = NULL;
struct addrinfo *pos;
struct addrinfo udp6hint;
int error;
char *port;
char dupbase[256];
int len;
memset(&udp6hint, 0, sizeof(udp6hint));
udp6hint.ai_family = 0;//Any... we check for AF_INET6 or 4
udp6hint.ai_socktype = SOCK_DGRAM;
udp6hint.ai_protocol = IPPROTO_UDP;
if (*s == '[')
{
port = strstr(s, "]");
if (!port)
error = EAI_NONAME;
else
{
len = port - (s+1);
if (len >= sizeof(dupbase))
len = sizeof(dupbase)-1;
strncpy(dupbase, s+1, len);
dupbase[len] = '\0';
error = pgetaddrinfo(dupbase, (port[1] == ':')?port+2:NULL, &udp6hint, &addrinfo);
}
}
else
{
port = strrchr(s, ':');
if (port)
{
len = port - s;
if (len >= sizeof(dupbase))
len = sizeof(dupbase)-1;
strncpy(dupbase, s, len);
dupbase[len] = '\0';
error = pgetaddrinfo(dupbase, port+1, &udp6hint, &addrinfo);
}
else
error = EAI_NONAME;
if (error) //failed, try string with no port.
error = pgetaddrinfo(s, NULL, &udp6hint, &addrinfo); //remember, this func will return any address family that could be using the udp protocol... (ip4 or ip6)
}
if (error)
{
return false;
}
((struct sockaddr*)sadr)->sa_family = 0;
for (pos = addrinfo; pos; pos = pos->ai_next)
{
switch(pos->ai_family)
{
case AF_INET6:
if (((struct sockaddr_in *)sadr)->sin_family == AF_INET6)
break; //first one should be best...
//fallthrough
#ifdef HAVE_IPV4
case AF_INET:
memcpy(sadr, pos->ai_addr, pos->ai_addrlen);
if (pos->ai_family == AF_INET)
goto dblbreak; //don't try finding any more, this is quake, they probably prefer ip4...
break;
#else
memcpy(sadr, pos->ai_addr, pos->ai_addrlen);
goto dblbreak;
#endif
}
}
dblbreak:
pfreeaddrinfo (addrinfo);
if (!((struct sockaddr*)sadr)->sa_family) //none suitablefound
return false;
if (addrfamily)
*addrfamily = ((struct sockaddr*)sadr)->sa_family;
if (((struct sockaddr*)sadr)->sa_family == AF_INET)
{
if (!((struct sockaddr_in *)sadr)->sin_port)
((struct sockaddr_in *)sadr)->sin_port = htons(defaultport);
if (addrsize)
*addrsize = sizeof(struct sockaddr_in);
}
else
{
if (!((struct sockaddr_in6 *)sadr)->sin6_port)
((struct sockaddr_in6 *)sadr)->sin6_port = htons(defaultport);
if (addrsize)
*addrsize = sizeof(struct sockaddr_in6);
}
}
else
#endif
{
#ifdef HAVE_IPV4
((struct sockaddr_in *)sadr)->sin_family = AF_INET;
((struct sockaddr_in *)sadr)->sin_port = 0;
if (strlen(s) >= sizeof(copy)-1)
return false;
((struct sockaddr_in *)sadr)->sin_port = htons(defaultport);
strcpy (copy, s);
// strip off a trailing :port if present
for (colon = copy ; *colon ; colon++)
if (*colon == ':')
{
*colon = 0;
((struct sockaddr_in *)sadr)->sin_port = htons((short)atoi(colon+1));
}
if (copy[0] >= '0' && copy[0] <= '9') //this is the wrong way to test. a server name may start with a number.
{
*(int *)&((struct sockaddr_in *)sadr)->sin_addr = inet_addr(copy);
}
else
{
if (! (h = gethostbyname(copy)) )
return false;
if (h->h_addrtype != AF_INET)
return false;
*(int *)&((struct sockaddr_in *)sadr)->sin_addr = *(int *)h->h_addr_list[0];
}
if (addrfamily)
*addrfamily = AF_INET;
if (addrsize)
*addrsize = sizeof(struct sockaddr_in);
#else
return false;
#endif
}
return true;
}
/*
accepts anything that NET_StringToSockaddr accepts plus certain url schemes
including: tcp, irc
*/
qboolean NET_StringToAdr (const char *s, int defaultport, netadr_t *a)
{
struct sockaddr_qstorage sadr;
Con_DPrintf("Resolving address: %s\n", s);
if (!strcmp (s, "internalserver"))
{
memset (a, 0, sizeof(*a));
a->type = NA_LOOPBACK;
return true;
}
#ifdef HAVE_WEBSOCKCL
if (!strncmp (s, "ws://", 5) || !strncmp (s, "wss://", 6))
{
memset (a, 0, sizeof(*a));
a->type = NA_WEBSOCKET;
Q_strncpyz(a->address.websocketurl, s, sizeof(a->address.websocketurl));
return true;
}
else
{
/*code for convienience - no other protocols work anyway*/
static float warned;
if (warned < realtime)
{
Con_Printf("Note: Assuming ws:// prefix\n");
warned = realtime + 1;
}
memset (a, 0, sizeof(*a));
a->type = NA_WEBSOCKET;
memcpy(a->address.websocketurl, "ws://", 5);
Q_strncpyz(a->address.websocketurl+5, s, sizeof(a->address.websocketurl)-5);
return true;
}
#endif
#ifdef TCPCONNECT
if (!strncmp (s, "tcp://", 6))
{
//make sure that the rest of the address is a valid ip address (4 or 6)
if (!NET_StringToSockaddr (s+6, 0, &sadr, NULL, NULL))
{
a->type = NA_INVALID;
return false;
}
SockadrToNetadr (&sadr, a);
if (a->type == NA_IP)
{
a->type = NA_TCP;
return true;
}
if (a->type == NA_IPV6)
{
a->type = NA_TCPV6;
return true;
}
return false;
}
#endif
#ifdef IRCCONNECT
if (!strncmp (s, "irc://", 6))
{
char *at;
memset (a, 0, sizeof(*a));
a->type = NA_IRC;
s+=6;
at = strchr(s, '@');
if (at)
{
if (at-s+1 >= sizeof(a->address.irc.user))
return false;
Q_strncpyz(a->address.irc.user, s, at-s+1);
Q_strncpyz(a->address.irc.channel, at+1, sizeof(a->address.irc.channel));
}
else
{
//just a user.
Q_strncpyz(a->address.irc.user, s, sizeof(a->address.irc.user));
}
return true;
}
#endif
#ifdef HAVE_NATPMP
if (!strncmp (s, "natpmp://", 9))
{
NET_PortToAdr(NA_NATPMP, s+9, a);
if (a->type == NA_IP)
a->type = NA_NATPMP;
if (a->type != NA_NATPMP)
return false;
return true;
}
#endif
if (!NET_StringToSockaddr (s, defaultport, &sadr, NULL, NULL))
{
a->type = NA_INVALID;
return false;
}
SockadrToNetadr (&sadr, a);
return true;
}
// NET_IntegerToMask: given a source address pointer, a mask address pointer, and
// desired number of bits, fills the mask pointer with given bits
// (bits < 0 will always fill all bits)
void NET_IntegerToMask (netadr_t *a, netadr_t *amask, int bits)
{
unsigned int i;
qbyte *n;
memset (amask, 0, sizeof(*amask));
amask->type = a->type;
if (bits < 0)
i = 8000; // fill all bits
else
i = bits;
switch (amask->type)
{
case NA_INVALID:
break;
case NA_IP:
case NA_BROADCAST_IP:
n = amask->address.ip;
if (i > 32)
i = 32;
for (; i >= 8; i -= 8)
{
*n = 0xFF;
n++;
}
// fill last bit
if (i)
{
i = 8 - i;
i = 255 - ((1 << i) - 1);
*n = i;
}
break;
case NA_IPV6:
case NA_BROADCAST_IP6:
#ifdef IPPROTO_IPV6
n = amask->address.ip6;
if (i > 128)
i = 128;
for (; i >= 8; i -= 8)
{
*n = 0xFF;
n++;
}
// fill last bit
if (i)
{
i = 8 - i;
i = 255 - ((1 << i) - 1);
*n = i;
}
#endif
break;
case NA_IPX:
case NA_BROADCAST_IPX:
#ifdef USEIPX
n = amask->address.ipx;
if (i > 80)
i = 80;
for (; i >= 8; i -= 8)
{
*n = 0xFF;
n++;
}
// fill last bit
if (i)
{
i = 8 - i;
i = 255 - ((1 << i) - 1);
*n = i;
}
#endif
break;
case NA_LOOPBACK:
break;
// warning: enumeration value âNA_*â not handled in switch
case NA_WEBSOCKET:
case NA_TCP:
case NA_TCPV6:
case NA_IRC:
break;
}
}
// ParsePartialIPv4: check string to see if it is a partial IPv4 address and
// return bits to mask and set netadr_t or 0 if not an address
int ParsePartialIPv4(const char *s, netadr_t *a)
{
const char *colon = NULL;
char *address = a->address.ip;
int bits = 8;
if (!*s)
return 0;
memset (a, 0, sizeof(*a));
while (*s)
{
if (*s == ':')
{
if (colon) // only 1 colon
return 0;
colon = s + 1;
}
else if (*s == '.')
{
if (colon) // no colons before periods (probably invalid anyway)
return 0;
else if (bits >= 32) // only 32 bits in ipv4
return 0;
else if (*(s+1) == '.')
return 0;
else if (*(s+1) == '\0')
break; // don't add more bits to the mask for x.x., etc
bits += 8;
address++;
}
else if (*s >= '0' && *s <= '9')
*address = ((*address)*10) + (*s-'0');
else
return 0; // invalid character
s++;
}
a->type = NA_IP;
if (colon)
a->port = atoi(colon);
return bits;
}
// NET_StringToAdrMasked: extension to NET_StringToAdr to handle IP addresses
// with masks or integers representing the bit masks
qboolean NET_StringToAdrMasked (const char *s, netadr_t *a, netadr_t *amask)
{
char t[64];
char *spoint;
int i;
spoint = strchr(s, '/');
if (spoint)
{
// we have a slash in the address so split and resolve separately
char *c;
i = (int)(spoint - s) + 1;
if (i > sizeof(t))
i = sizeof(t);
Q_strncpyz(t, s, i);
if (!ParsePartialIPv4(t, a) && !NET_StringToAdr(t, 0, a))
return false;
spoint++;
c = spoint;
if (!*c)
return false;
while (*c) // check for non-numeric characters
{
if (*c < '0' || *c > '9')
{
c = NULL;
break;
}
c++;
}
if (c == NULL) // we have an address so resolve it and return
return ParsePartialIPv4(spoint, amask) || NET_StringToAdr(spoint, 0, amask);
// otherwise generate mask for given bits
i = atoi(spoint);
NET_IntegerToMask(a, amask, i);
}
else
{
// we don't have a slash, resolve and fill with a full mask
i = ParsePartialIPv4(s, a);
if (!i && !NET_StringToAdr(s, 0, a))
return false;
memset (amask, 0, sizeof(*amask));
amask->type = a->type;
if (i)
NET_IntegerToMask(a, amask, i);
else
NET_IntegerToMask(a, amask, -1);
}
return true;
}
// NET_CompareAdrMasked: given 3 addresses, 2 to compare with a complimentary mask,
// returns true or false if they match
qboolean NET_CompareAdrMasked(netadr_t a, netadr_t b, netadr_t mask)
{
int i;
//make sure the address being checked against matches the mask
if (b.type != mask.type)
return false;
// check port if both are non-zero
if (a.port && b.port && a.port != b.port)
return false;
// check to make sure all types match
if (a.type != b.type)
{
if (a.type == NA_IP && b.type == NA_IPV6 && mask.type == NA_IP)
{
for (i = 0; i < 10; i++)
if (b.address.ip6[i] != 0)
return false; //only matches if they're 0s, otherwise its not an ipv4 address there
for (; i < 12; i++)
if (b.address.ip6[i] != 0xff && b.address.ip6[i] != 0x00) //0x00 is depricated
return false; //only matches if they're 0s or ffs, otherwise its not an ipv4 address there
for (i = 0; i < 4; i++)
{
if ((a.address.ip[i] & mask.address.ip[i]) != (b.address.ip6[12+i] & mask.address.ip[i]))
return false; //mask doesn't match
}
return true; //its an ipv4 address in there, the mask matched the whole way through
}
if (a.type == NA_IPV6 && b.type == NA_IP && mask.type == NA_IP)
{
for (i = 0; i < 10; i++)
if (a.address.ip6[i] != 0)
return false; //only matches if they're 0s, otherwise its not an ipv4 address there
for (; i < 12; i++)
if (a.address.ip6[i] != 0xff && a.address.ip6[i] != 0x00) //0x00 is depricated
return false; //only matches if they're 0s or ffs, otherwise its not an ipv4 address there
for (i = 0; i < 4; i++)
{
if ((a.address.ip6[12+i] & mask.address.ip[i]) != (b.address.ip[i] & mask.address.ip[i]))
return false; //mask doesn't match
}
return true; //its an ipv4 address in there, the mask matched the whole way through
}
return false;
}
// match on protocol type and compare address
switch (a.type)
{
case NA_LOOPBACK:
return true;
case NA_BROADCAST_IP:
case NA_IP:
for (i = 0; i < 4; i++)
{
if ((a.address.ip[i] & mask.address.ip[i]) != (b.address.ip[i] & mask.address.ip[i]))
return false;
}
break;
#ifdef IPPROTO_IPV6
case NA_BROADCAST_IP6:
case NA_IPV6:
for (i = 0; i < 16; i++)
{
if ((a.address.ip6[i] & mask.address.ip6[i]) != (b.address.ip6[i] & mask.address.ip6[i]))
return false;
}
break;
#endif
#ifdef USEIPX
case NA_BROADCAST_IPX:
case NA_IPX:
for (i = 0; i < 10; i++)
{
if ((a.address.ipx[i] & mask.address.ipx[i]) != (b.address.ipx[i] & mask.address.ipx[i]))
return false;
}
break;
#endif
#ifdef IRCCONNECT
case NA_IRC:
//masks are not supported, match explicitly
if (strcmp(a.address.irc.user, b.address.irc.user))
return false;
break;
#endif
default:
return false; // invalid protocol
}
return true; // all checks passed
}
// UniformMaskedBits: counts number of bits in an assumed uniform mask, returns
// -1 if not uniform
int UniformMaskedBits(netadr_t mask)
{
int bits;
int b;
unsigned int bs;
qboolean bitenc = false;
switch (mask.type)
{
case NA_BROADCAST_IP:
case NA_IP:
bits = 32;
for (b = 3; b >= 0; b--)
{
if (mask.address.ip[b] == 0xFF)
bitenc = true;
else if (mask.address.ip[b])
{
bs = (~mask.address.ip[b]) & 0xFF;
while (bs)
{
if (bs & 1)
{
bits -= 1;
if (bitenc)
return -1;
}
else
bitenc = true;
bs >>= 1;
}
}
else if (bitenc)
return -1;
else
bits -= 8;
}
break;
#ifdef IPPROTO_IPV6
case NA_BROADCAST_IP6:
case NA_IPV6:
bits = 128;
for (b = 15; b >= 0; b--)
{
if (mask.address.ip6[b] == 0xFF)
bitenc = true;
else if (mask.address.ip6[b])
{
bs = (~mask.address.ip6[b]) & 0xFF;
while (bs)
{
if (bs & 1)
{
bits -= 1;
if (bitenc)
return -1;
}
else
bitenc = true;
bs >>= 1;
}
}
else if (bitenc)
return -1;
else
bits -= 8;
}
break;
#endif
#ifdef USEIPX
case NA_BROADCAST_IPX:
case NA_IPX:
bits = 80;
for (b = 9; b >= 0; b--)
{
if (mask.address.ipx[b] == 0xFF)
bitenc = true;
else if (mask.address.ipx[b])
{
bs = (~mask.address.ipx[b]) & 0xFF;
while (bs)
{
if (bs & 1)
{
bits -= 1;
if (bitenc)
return -1;
}
else
bitenc = true;
bs >>= 1;
}
}
else if (bitenc)
return -1;
else
bits -= 8;
}
break;
#endif
default:
return -1; // invalid protocol
}
return bits; // all checks passed
}
char *NET_AdrToStringMasked (char *s, int len, netadr_t a, netadr_t amask)
{
int i;
char adr[MAX_ADR_SIZE], mask[MAX_ADR_SIZE];
i = UniformMaskedBits(amask);
if (i >= 0)
snprintf(s, len, "%s/%i", NET_AdrToString(adr, sizeof(adr), a), i);
else
snprintf(s, len, "%s/%s", NET_AdrToString(adr, sizeof(adr), a), NET_AdrToString(mask, sizeof(mask), amask));
return s;
}
// Returns true if we can't bind the address locally--in other words,
// the IP is NOT one of our interfaces.
qboolean NET_IsClientLegal(netadr_t *adr)
{
#if 0
struct sockaddr_in sadr;
int newsocket;
if (adr->ip[0] == 127)
return false; // no local connections period
NetadrToSockadr (adr, &sadr);
if ((newsocket = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP)) == INVALID_SOCKET)
Sys_Error ("NET_IsClientLegal: socket:", strerror(qerrno));
sadr.sin_port = 0;
if( bind (newsocket, (void *)&sadr, sizeof(sadr)) == -1)
{
// It is not a local address
close(newsocket);
return true;
}
close(newsocket);
return false;
#else
return true;
#endif
}
qboolean NET_IsLoopBackAddress (netadr_t adr)
{
// return (!strcmp(cls.servername, NET_AdrToString(net_local_adr)) || !strcmp(cls.servername, "local");
return adr.type == NA_LOOPBACK;
}
/////////////////////////////////////////////
//loopback stuff
#if !defined(CLIENTONLY) && !defined(SERVERONLY)
qboolean NET_GetLoopPacket (int sock, netadr_t *from, sizebuf_t *message)
{
int i;
loopback_t *loop;
sock &= 1;
loop = &loopbacks[sock];
if (loop->send - loop->get > MAX_LOOPBACK)
{
extern cvar_t showdrop;
if (showdrop.ival)
Con_Printf("loopback dropping %i packets\n", (loop->send - MAX_LOOPBACK) - loop->get);
loop->get = loop->send - MAX_LOOPBACK;
}
if (loop->get >= loop->send)
return false;
i = loop->get & (MAX_LOOPBACK-1);
loop->get++;
if (message->maxsize < loop->msgs[i].datalen)
Sys_Error("NET_SendLoopPacket: Loopback buffer was too big");
memcpy (message->data, loop->msgs[i].data, loop->msgs[i].datalen);
message->cursize = loop->msgs[i].datalen;
memset (from, 0, sizeof(*from));
from->type = NA_LOOPBACK;
message->packing = SZ_RAWBYTES;
message->currentbit = 0;
return true;
}
void NET_SendLoopPacket (int sock, int length, void *data, netadr_t to)
{
int i;
loopback_t *loop;
sock &= 1;
loop = &loopbacks[sock^1];
if (length > sizeof(loop->msgs[i].data))
{
Con_Printf("NET_SendLoopPacket: Loopback buffer is too small");
return;
}
i = loop->send & (MAX_LOOPBACK-1);
loop->send++;
memcpy (loop->msgs[i].data, data, length);
loop->msgs[i].datalen = length;
}
int FTENET_Loop_GetLocalAddress(ftenet_generic_connection_t *con, netadr_t *out, int adrnum)
{
if (adrnum==0)
{
out->type = NA_LOOPBACK;
out->port = con->thesocket+1;
}
return 1;
}
qboolean FTENET_Loop_GetPacket(ftenet_generic_connection_t *con)
{
return NET_GetLoopPacket(con->thesocket, &net_from, &net_message);
}
qboolean FTENET_Loop_SendPacket(ftenet_generic_connection_t *con, int length, void *data, netadr_t to)
{
if (to.type == NA_LOOPBACK)
{
NET_SendLoopPacket(con->thesocket, length, data, to);
return true;
}
return false;
}
void FTENET_Loop_Close(ftenet_generic_connection_t *con)
{
int sock = con->thesocket;
sock &= 1;
loopbacks[sock].inited = false;
Z_Free(con);
}
static ftenet_generic_connection_t *FTENET_Loop_EstablishConnection(qboolean isserver, const char *address)
{
ftenet_generic_connection_t *newcon;
int sock;
for (sock = 0; sock < 2; sock++)
if (!loopbacks[sock].inited)
break;
if (sock == 2)
return NULL;
newcon = Z_Malloc(sizeof(*newcon));
if (newcon)
{
loopbacks[sock].inited = true;
newcon->GetLocalAddress = FTENET_Loop_GetLocalAddress;
newcon->GetPacket = FTENET_Loop_GetPacket;
newcon->SendPacket = FTENET_Loop_SendPacket;
newcon->Close = FTENET_Loop_Close;
newcon->islisten = isserver;
newcon->addrtype[0] = NA_LOOPBACK;
newcon->addrtype[1] = NA_INVALID;
newcon->thesocket = sock;
}
return newcon;
}
#endif
//=============================================================================
#define MAX_CONNECTIONS 8
typedef struct ftenet_connections_s
{
qboolean islisten;
ftenet_generic_connection_t *conn[MAX_CONNECTIONS];
} ftenet_connections_t;
ftenet_connections_t *FTENET_CreateCollection(qboolean listen)
{
ftenet_connections_t *col;
col = Z_Malloc(sizeof(*col));
col->islisten = listen;
return col;
}
static ftenet_generic_connection_t *FTENET_Loop_EstablishConnection(qboolean isserver, const char *address);
static ftenet_generic_connection_t *FTENET_UDP4_EstablishConnection(qboolean isserver, const char *address);
static ftenet_generic_connection_t *FTENET_UDP6_EstablishConnection(qboolean isserver, const char *address);
static ftenet_generic_connection_t *FTENET_TCP4Connect_EstablishConnection(qboolean isserver, const char *address);
static ftenet_generic_connection_t *FTENET_TCP6Connect_EstablishConnection(qboolean isserver, const char *address);
static ftenet_generic_connection_t *FTENET_IPX_EstablishConnection(qboolean isserver, const char *address);
static ftenet_generic_connection_t *FTENET_WebSocket_EstablishConnection(qboolean isserver, const char *address);
static ftenet_generic_connection_t *FTENET_IRCConnect_EstablishConnection(qboolean isserver, const char *address);
static ftenet_generic_connection_t *FTENET_NATPMP_EstablishConnection(qboolean isserver, const char *address);
#ifdef HAVE_NATPMP
typedef struct
{
ftenet_generic_connection_t pub;
ftenet_connections_t *col;
netadr_t reqpmpaddr;
netadr_t pmpaddr;
netadr_t natadr;
unsigned int refreshtime;
} pmpcon_t;
int FTENET_NATPMP_GetLocalAddress(struct ftenet_generic_connection_s *con, netadr_t *local, int adridx);
static qboolean NET_Was_NATPMP(ftenet_connections_t *collection)
{
pmpcon_t *pmp;
struct
{
qbyte ver; qbyte op; short resultcode;
int age;
union
{
struct
{
short privport; short pubport;
int mapping_expectancy;
};
qbyte ipv4[4];
};
} *pmpreqrep;
int i;
for (i = 0; i < MAX_CONNECTIONS; i++)
{
if (!collection->conn[i])
continue;
if (collection->conn[i]->GetLocalAddress == FTENET_NATPMP_GetLocalAddress)
{
pmp = (pmpcon_t*)collection->conn[i];
if (NET_CompareAdr(pmp->pmpaddr, net_from))
{
pmpreqrep = (void*)net_message.data;
if (pmpreqrep->ver != 0)
return false;
if (net_message.cursize == 12 && pmpreqrep->op == 128)
{
char adrbuf[256];
pmp->natadr.type = NA_IP;
pmp->natadr.port = 0;
memcpy(pmp->natadr.address.ip, pmpreqrep->ipv4, sizeof(pmp->natadr.address.ip));
NET_AdrToString(adrbuf, sizeof(adrbuf), pmp->natadr);
// Con_Printf("Public ip is %s\n", adrbuf);
return true;
}
if (net_message.cursize == 16 && pmpreqrep->op == 129)
{
switch(BigShort(pmpreqrep->resultcode))
{
case 0:
break;
case 1:
Con_Printf("NAT-PMP: unsupported version\n");
return true;
case 2:
Con_Printf("NAT-PMP: refused - please reconfigure router\n");
return true;
case 3:
Con_Printf("NAT-PMP: network failure\n");
return true;
case 4:
Con_Printf("NAT-PMP: out of resources\n");
return true;
case 5:
Con_Printf("NAT-PMP: unsupported opcode\n");
return true;
default:
return false;
}
// Con_Printf("Local port %u publically available on port %u\n", (unsigned short)BigShort(pmpreqrep->privport), (unsigned short)BigShort(pmpreqrep->pubport));
pmp->natadr.port = pmpreqrep->pubport;
return true;
}
return false;
}
}
}
return false;
}
static void FTENET_NATPMP_Refresh(pmpcon_t *pmp, short oldport, ftenet_connections_t *collection)
{
int i;
int adrno, adrcount=1;
netadr_t adr;
struct
{
qbyte ver; qbyte op; short reserved1;
short privport; short pubport;
int mapping_expectancy;
} pmpreqmsg;
pmpreqmsg.ver = 0;
pmpreqmsg.op = 1;
pmpreqmsg.reserved1 = BigShort(0);
pmpreqmsg.privport = BigShort(0);
pmpreqmsg.pubport = BigShort(0);
pmpreqmsg.mapping_expectancy = BigLong(60*5);
if (!collection)
return;
for (i = 0; i < MAX_CONNECTIONS; i++)
{
if (!collection->conn[i])
continue;
if (collection->conn[i]->GetLocalAddress && collection->conn[i]->GetLocalAddress != FTENET_NATPMP_GetLocalAddress)
{
for (adrno = 0, adrcount=1; (adrcount = collection->conn[i]->GetLocalAddress(collection->conn[i], &adr, adrno)) && adrno < adrcount; adrno++)
{
// Con_Printf("net address (%s): %s\n", collection->conn[i]->name, NET_AdrToString(adrbuf, sizeof(adrbuf), adr));
//unipv6ify it if its a hybrid socket.
if (adr.type == NA_IPV6 &&
!*(int*)&adr.address.ip6[0] &&
!*(int*)&adr.address.ip6[4] &&
!*(short*)&adr.address.ip6[8] &&
*(short*)&adr.address.ip6[10]==(short)0xffff &&
!*(int*)&adr.address.ip6[12])
{
*(int*)adr.address.ip = *(int*)&adr.address.ip6[12];
adr.type = NA_IP;
}
if (adr.type == NA_IP)
{
if (adr.address.ip[0] == 127) //yes. loopback has a lot of ip addresses. wasteful but whatever.
continue;
//assume a netmask of 255.255.255.0
adr.address.ip[3] = 1;
}
// else if (adr.type == NA_IPV6)
// {
// }
else
continue;
pmpreqmsg.privport = adr.port;
pmpreqmsg.pubport = oldport?oldport:adr.port;
if (*(int*)pmp->reqpmpaddr.address.ip == INADDR_ANY)
{
pmp->pmpaddr = adr;
pmp->pmpaddr.port = pmp->reqpmpaddr.port;
}
else
pmp->pmpaddr = pmp->reqpmpaddr;
if (*(int*)pmp->pmpaddr.address.ip == INADDR_ANY)
continue;
//get the public ip.
pmpreqmsg.op = 0;
NET_SendPacket(NS_SERVER, 2, &pmpreqmsg, pmp->pmpaddr);
//open the firewall/nat.
pmpreqmsg.op = 1;
NET_SendPacket(NS_SERVER, sizeof(pmpreqmsg), &pmpreqmsg, pmp->pmpaddr);
break;
}
}
}
}
#define PMP_POLL_TIME (1000*30)//every 30 seconds
int FTENET_NATPMP_GetLocalAddress(struct ftenet_generic_connection_s *con, netadr_t *local, int adridx)
{
pmpcon_t *pmp = (pmpcon_t*)con;
local->type = NA_INVALID;
if (adridx == 0)
*local = pmp->natadr;
return (pmp->natadr.type != NA_INVALID) && (pmp->natadr.port != 0);
}
qboolean FTENET_NATPMP_GetPacket(struct ftenet_generic_connection_s *con)
{
pmpcon_t *pmp = (pmpcon_t*)con;
unsigned int now = Sys_Milliseconds();
if (now - pmp->refreshtime > PMP_POLL_TIME) //weird logic to cope with wrapping
{
pmp->refreshtime = now;
FTENET_NATPMP_Refresh(pmp, pmp->natadr.port, pmp->col);
}
return false;
}
qboolean FTENET_NATPMP_SendPacket(struct ftenet_generic_connection_s *con, int length, void *data, netadr_t to)
{
return false;
}
void FTENET_NATPMP_Close(struct ftenet_generic_connection_s *con)
{
//FIXME: we should send a packet to close the port
Z_Free(con);
}
ftenet_generic_connection_t *FTENET_NATPMP_EstablishConnection(qboolean isserver, const char *address)
{
pmpcon_t *pmp;
netadr_t pmpadr;
NET_PortToAdr(NA_IP, address, &pmpadr);
if (pmpadr.type == NA_NATPMP)
pmpadr.type = NA_IP;
if (pmpadr.type != NA_IP)
return NULL;
pmp = Z_Malloc(sizeof(*pmp));
pmp->col = svs.sockets;
Q_strncpyz(pmp->pub.name, "natpmp", sizeof(pmp->pub.name));
pmp->reqpmpaddr = pmpadr;
pmp->pub.GetLocalAddress = FTENET_NATPMP_GetLocalAddress;
pmp->pub.GetPacket = FTENET_NATPMP_GetPacket;
//qboolean (*ChangeLocalAddress)(struct ftenet_generic_connection_s *con, const char *newaddress);
pmp->pub.SendPacket = FTENET_NATPMP_SendPacket;
pmp->pub.Close = FTENET_NATPMP_Close;
pmp->pub.thesocket = INVALID_SOCKET;
pmp->refreshtime = Sys_Milliseconds() + PMP_POLL_TIME*64;
return &pmp->pub;
}
#endif
qboolean FTENET_AddToCollection(ftenet_connections_t *col, const char *name, const char *address, netadrtype_t addrtype, qboolean islisten)
{
int count = 0;
int i;
netadr_t adr;
ftenet_generic_connection_t *(*establish)(qboolean isserver, const char *address) = NULL;
if (!col)
return false;
if (!address || !*address)
adr.type = NA_INVALID;
else if (islisten)
NET_PortToAdr(addrtype, address, &adr);
else
NET_StringToAdr(address, 0, &adr);
switch(adr.type)
{
default: establish = NULL; break;
#ifdef HAVE_NATPMP
case NA_NATPMP: establish = FTENET_NATPMP_EstablishConnection; break;
#endif
#if !defined(CLIENTONLY) && !defined(SERVERONLY)
case NA_LOOPBACK: establish = FTENET_Loop_EstablishConnection; break;
#endif
#ifdef HAVE_IPV4
case NA_IP: establish = FTENET_UDP4_EstablishConnection; break;
#endif
#ifdef IPPROTO_IPV6
case NA_IPV6: establish = FTENET_UDP6_EstablishConnection; break;
#endif
#ifdef USEIPX
case NA_IPX: establish = FTENET_IPX_EstablishConnection; break;
#endif
case NA_WEBSOCKET:
#ifdef HAVE_WEBSOCKCL
if (!islisten)
establish = FTENET_WebSocket_EstablishConnection;
#endif
#ifdef TCPCONNECT
establish = FTENET_TCP4Connect_EstablishConnection;
#endif
break;
#ifdef IRCCONNECT
case NA_IRC: establish = FTENET_IRCConnect_EstablishConnection; break;
#endif
#ifdef TCPCONNECT
case NA_TCP: establish = FTENET_TCP4Connect_EstablishConnection; break;
#endif
#if defined(TCPCONNECT) && defined(IPPROTO_IPV6)
case NA_TCPV6: establish = FTENET_TCP6Connect_EstablishConnection; break;
#endif
}
if (name)
{
for (i = 0; i < MAX_CONNECTIONS; i++)
{
if (col->conn[i])
if (col->conn[i]->name && !strcmp(col->conn[i]->name, name))
{
if (address && *address)
if (col->conn[i]->ChangeLocalAddress)
{
if (col->conn[i]->ChangeLocalAddress(col->conn[i], address))
return true;
}
col->conn[i]->Close(col->conn[i]);
col->conn[i] = NULL;
}
}
}
if (address && *address && establish)
{
for (i = 0; i < MAX_CONNECTIONS; i++)
{
if (!col->conn[i])
{
address = COM_Parse(address);
col->conn[i] = establish(islisten, com_token);
if (!col->conn[i])
break;
if (name)
Q_strncpyz(col->conn[i]->name, name, sizeof(col->conn[i]->name));
count++;
if (address && *address)
continue;
break;
}
}
}
return count > 0;
}
void FTENET_CloseCollection(ftenet_connections_t *col)
{
int i;
if (!col)
return;
for (i = 0; i < MAX_CONNECTIONS; i++)
{
if (col->conn[i])
{
col->conn[i]->Close(col->conn[i]);
}
}
Z_Free(col);
}
void FTENET_Generic_Close(ftenet_generic_connection_t *con)
{
#ifdef HAVE_PACKET
if (con->thesocket != INVALID_SOCKET)
closesocket(con->thesocket);
#endif
Z_Free(con);
}
int FTENET_Generic_GetLocalAddress(ftenet_generic_connection_t *con, netadr_t *out, int count)
{
#ifndef HAVE_PACKET
return 0;
#else
struct sockaddr_qstorage from;
int fromsize = sizeof(from);
netadr_t adr;
char adrs[MAX_ADR_SIZE];
int b;
int idx = 0;
if (getsockname (con->thesocket, (struct sockaddr*)&from, &fromsize) != -1)
{
memset(&adr, 0, sizeof(adr));
SockadrToNetadr(&from, &adr);
#ifdef USE_GETHOSTNAME_LOCALLISTING
if (adr.type == NA_IPV6 &&
!*(int*)&adr.address.ip6[0] &&
!*(int*)&adr.address.ip6[4] &&
!*(short*)&adr.address.ip6[8] &&
*(short*)&adr.address.ip6[10]==(short)0xffff &&
!*(int*)&adr.address.ip6[12])
{
/*ipv4-mapped address ANY, pretend we read blank*/
b = sizeof(adr.address);
}
else
{
for (b = 0; b < sizeof(adr.address); b++)
if (((unsigned char*)&adr.address)[b] != 0)
break;
}
if (b == sizeof(adr.address))
{
gethostname(adrs, sizeof(adrs));
#ifdef IPPROTO_IPV6
if (pgetaddrinfo)
{
struct addrinfo hints, *result, *itr;
memset(&hints, 0, sizeof(struct addrinfo));
hints.ai_family = 0; /* Allow IPv4 or IPv6 */
hints.ai_socktype = SOCK_DGRAM; /* Datagram socket */
hints.ai_flags = 0;
hints.ai_protocol = 0; /* Any protocol */
if (pgetaddrinfo(adrs, NULL, &hints, &result) != 0)
{
if (idx++ == count)
*out = adr;
}
else
{
for (itr = result; itr; itr = itr->ai_next)
{
if (itr->ai_addr->sa_family != ((struct sockaddr_in*)&from)->sin_family)
{
#ifdef IPV6_V6ONLY
if (((struct sockaddr_in*)&from)->sin_family == AF_INET6 && itr->ai_addr->sa_family == AF_INET)
{
int ipv6only = true;
int optlen = sizeof(ipv6only);
getsockopt(con->thesocket, IPPROTO_IPV6, IPV6_V6ONLY, (char *)&ipv6only, &optlen);
if (ipv6only)
continue;
}
else
#endif
continue;
}
if (itr->ai_addr->sa_family == AF_INET
|| itr->ai_addr->sa_family == AF_INET6
#ifdef USEIPX
|| itr->ai_addr->sa_family == AF_IPX
#endif
)
if (idx++ == count)
{
SockadrToNetadr((struct sockaddr_qstorage*)itr->ai_addr, out);
out->port = ((struct sockaddr_in*)&from)->sin_port;
}
}
pfreeaddrinfo(result);
/*if none found, fill in the 0.0.0.0 or whatever*/
if (!idx)
{
idx++;
*out = adr;
}
}
}
else
#endif
{
struct hostent *h;
h = gethostbyname(adrs);
b = 0;
#ifdef HAVE_IPV4
if(h && h->h_addrtype == AF_INET)
{
for (b = 0; h->h_addr_list[b]; b++)
{
((struct sockaddr_in*)&from)->sin_family = AF_INET;
memcpy(&((struct sockaddr_in*)&from)->sin_addr, h->h_addr_list[b], sizeof(((struct sockaddr_in*)&from)->sin_addr));
SockadrToNetadr(&from, &adr);
if (idx++ == count)
*out = adr;
}
}
#endif
#ifdef IPPROTO_IPV6
if(h && h->h_addrtype == AF_INET6)
{
for (b = 0; h->h_addr_list[b]; b++)
{
((struct sockaddr_in*)&from)->sin_family = AF_INET6;
memcpy(&((struct sockaddr_in6*)&from)->sin6_addr, h->h_addr_list[b], sizeof(((struct sockaddr_in6*)&from)->sin6_addr));
SockadrToNetadr(&from, &adr);
if (idx++ == count)
*out = adr;
}
}
#endif
if (b == 0)
{
if (idx++ == count)
*out = adr;
}
}
}
else
#endif
{
if (adr.type == NA_IPV6 &&
!*(int*)&adr.address.ip6[0] &&
!*(int*)&adr.address.ip6[4] &&
!*(int*)&adr.address.ip6[8] &&
!*(int*)&adr.address.ip6[12])
{
if (idx++ == count)
{
*out = adr;
out->type = NA_IP;
}
}
if (idx++ == count)
*out = adr;
}
}
return idx;
#endif
}
qboolean FTENET_Generic_GetPacket(ftenet_generic_connection_t *con)
{
#ifndef HAVE_PACKET
return false;
#else
struct sockaddr_qstorage from;
int fromlen;
int ret;
int err;
char adr[MAX_ADR_SIZE];
if (con->thesocket == INVALID_SOCKET)
return false;
fromlen = sizeof(from);
ret = recvfrom (con->thesocket, (char *)net_message_buffer, sizeof(net_message_buffer), 0, (struct sockaddr*)&from, &fromlen);
if (ret == -1)
{
err = qerrno;
if (err == EWOULDBLOCK)
return false;
if (err == EMSGSIZE)
{
SockadrToNetadr (&from, &net_from);
Con_TPrintf (TL_OVERSIZEPACKETFROM,
NET_AdrToString (adr, sizeof(adr), net_from));
return false;
}
if (err == ECONNABORTED || err == ECONNRESET)
{
Con_TPrintf (TL_CONNECTIONLOSTORABORTED); //server died/connection lost.
#ifndef SERVERONLY
if (cls.state != ca_disconnected && !con->islisten)
{
if (cls.lastarbiatarypackettime+5 < Sys_DoubleTime()) //too many mvdsv
Cbuf_AddText("disconnect\nreconnect\n", RESTRICT_LOCAL); //retry connecting.
else
Con_Printf("Packet was not delivered - server might be badly configured\n");
return false;
}
#endif
return false;
}
Con_Printf ("NET_GetPacket: Error (%i): %s\n", err, strerror(err));
return false;
}
SockadrToNetadr (&from, &net_from);
net_message.packing = SZ_RAWBYTES;
net_message.currentbit = 0;
net_message.cursize = ret;
if (net_message.cursize == sizeof(net_message_buffer) )
{
Con_TPrintf (TL_OVERSIZEPACKETFROM, NET_AdrToString (adr, sizeof(adr), net_from));
return false;
}
return true;
#endif
}
qboolean FTENET_Generic_SendPacket(ftenet_generic_connection_t *con, int length, void *data, netadr_t to)
{
#ifndef HAVE_PACKET
return false;
#else
struct sockaddr_qstorage addr;
int size;
int ret;
for (size = 0; size < FTENET_ADDRTYPES; size++)
if (to.type == con->addrtype[size])
break;
if (size == FTENET_ADDRTYPES)
return false;
#ifdef IPPROTO_IPV6
/*special code to handle sending to hybrid sockets*/
if (con->addrtype[1] == NA_IPV6 && to.type == NA_IP)
{
memset(&addr, 0, sizeof(struct sockaddr_in6));
((struct sockaddr_in6*)&addr)->sin6_family = AF_INET6;
*(short*)&((struct sockaddr_in6*)&addr)->sin6_addr.s6_addr[10] = 0xffff;
*(int*)&((struct sockaddr_in6*)&addr)->sin6_addr.s6_addr[12] = *(int*)&to.address.ip;
((struct sockaddr_in6*)&addr)->sin6_port = to.port;
size = sizeof(struct sockaddr_in6);
}
else
#endif
{
NetadrToSockadr (&to, &addr);
switch(to.type)
{
default:
Con_Printf("Bad address type\n");
break;
#ifdef USEIPX //who uses ipx nowadays anyway?
case NA_BROADCAST_IPX:
case NA_IPX:
size = sizeof(struct sockaddr_ipx);
break;
#endif
case NA_BROADCAST_IP:
case NA_IP:
size = sizeof(struct sockaddr_in);
break;
#ifdef IPPROTO_IPV6
case NA_BROADCAST_IP6:
case NA_IPV6:
size = sizeof(struct sockaddr_in6);
break;
#endif
}
}
ret = sendto (con->thesocket, data, length, 0, (struct sockaddr*)&addr, size );
if (ret == -1)
{
int ecode = qerrno;
// wouldblock is silent
if (ecode == EWOULDBLOCK)
return true;
if (ecode == ECONNREFUSED)
return true;
#ifndef SERVERONLY
if (ecode == EADDRNOTAVAIL)
Con_DPrintf("NET_SendPacket Warning: %i\n", ecode);
else
#endif
Con_TPrintf (TL_NETSENDERROR, ecode);
}
return true;
#endif
}
qboolean NET_PortToAdr (int adrfamily, const char *s, netadr_t *a)
{
char *e;
int port;
port = strtoul(s, &e, 10);
if (*e) //if *e then its not just a single number in there, so treat it as a proper address.
return NET_StringToAdr(s, 0, a);
else if (port)
{
memset(a, 0, sizeof(*a));
a->port = htons((unsigned short)port);
a->type = adrfamily;
return a->type != NA_INVALID;
}
a->type = NA_INVALID;
return false;
}
ftenet_generic_connection_t *FTENET_Generic_EstablishConnection(int adrfamily, int protocol, qboolean isserver, const char *address)
{
#ifndef HAVE_PACKET
return NULL;
#else
//this is written to support either ipv4 or ipv6, depending on the remote addr.
ftenet_generic_connection_t *newcon;
unsigned long _true = true;
SOCKET newsocket = INVALID_SOCKET;
int temp;
netadr_t adr;
struct sockaddr_qstorage qs;
int family;
int port;
int bindtries;
int bufsz;
qboolean hybrid = false;
if (!NET_PortToAdr(adrfamily, address, &adr))
{
Con_Printf("unable to resolve local address %s\n", address);
return NULL; //couldn't resolve the name
}
temp = NetadrToSockadr(&adr, &qs);
family = ((struct sockaddr*)&qs)->sa_family;
#if defined(IPPROTO_IPV6) && defined(IPV6_V6ONLY)
if (isserver && family == AF_INET && net_hybriddualstack.ival && !((struct sockaddr_in*)&qs)->sin_addr.s_addr)
{
unsigned long _false = false;
if ((newsocket = socket (AF_INET6, SOCK_DGRAM, protocol)) != INVALID_SOCKET)
{
if (0 == setsockopt(newsocket, IPPROTO_IPV6, IPV6_V6ONLY, (char *)&_false, sizeof(_false)))
{
int ip = ((struct sockaddr_in*)&qs)->sin_addr.s_addr;
int port = ((struct sockaddr_in*)&qs)->sin_port;
ip = ((struct sockaddr_in*)&qs)->sin_addr.s_addr;
memset(&qs, 0, sizeof(struct sockaddr_in6));
((struct sockaddr_in6*)&qs)->sin6_family = AF_INET6;
/*
if (((struct sockaddr_in*)&qs)->sin_addr.s_addr)
{
((struct sockaddr_in6*)&qs)->sin6_addr.s6_addr[10] = 0xff;
((struct sockaddr_in6*)&qs)->sin6_addr.s6_addr[11] = 0xff;
((struct sockaddr_in6*)&qs)->sin6_addr.s6_addr[12] = ((qbyte*)&ip)[0];
((struct sockaddr_in6*)&qs)->sin6_addr.s6_addr[13] = ((qbyte*)&ip)[1];
((struct sockaddr_in6*)&qs)->sin6_addr.s6_addr[14] = ((qbyte*)&ip)[2];
((struct sockaddr_in6*)&qs)->sin6_addr.s6_addr[15] = ((qbyte*)&ip)[3];
}
*/
((struct sockaddr_in6*)&qs)->sin6_port = port;
temp = sizeof(struct sockaddr_in6);
hybrid = true;
}
else
{
/*v6only failed... if the option doesn't exist, chances are this is a hybrid system which doesn't support both simultaneously anyway*/
closesocket(newsocket);
newsocket = INVALID_SOCKET;
}
}
}
#endif
if (newsocket == INVALID_SOCKET)
if ((newsocket = socket (family, SOCK_DGRAM, protocol)) == INVALID_SOCKET)
{
return NULL;
}
#if defined(IPPROTO_IPV6) && defined(IPV6_V6ONLY)
if (family == AF_INET6)
setsockopt(newsocket, IPPROTO_IPV6, IPV6_V6ONLY, (char *)&_true, sizeof(_true));
#endif
bufsz = 1<<18;
setsockopt(newsocket, SOL_SOCKET, SO_RCVBUF, (void*)&bufsz, sizeof(bufsz));
//try and find an unused port.
port = ntohs(((struct sockaddr_in*)&qs)->sin_port);
for (bindtries = 100; bindtries > 0; bindtries--)
{
((struct sockaddr_in*)&qs)->sin_port = htons((unsigned short)(port+100-bindtries));
if ((bind(newsocket, (struct sockaddr *)&qs, temp) == INVALID_SOCKET))
{
continue;
}
break;
}
if (!bindtries)
{
SockadrToNetadr(&qs, &adr);
//mneh, reuse qs.
NET_AdrToString((char*)&qs, sizeof(qs), adr);
Con_Printf("Unable to listen at %s\n", (char*)&qs);
closesocket(newsocket);
return NULL;
}
if (ioctlsocket (newsocket, FIONBIO, &_true) == -1)
Sys_Error ("UDP_OpenSocket: ioctl FIONBIO: %s", strerror(qerrno));
//
// determine my name & address if we don't already know it
//
if (!net_local_cl_ipadr.type == NA_INVALID)
NET_GetLocalAddress (newsocket, &net_local_cl_ipadr);
newcon = Z_Malloc(sizeof(*newcon));
if (newcon)
{
newcon->GetLocalAddress = FTENET_Generic_GetLocalAddress;
newcon->GetPacket = FTENET_Generic_GetPacket;
newcon->SendPacket = FTENET_Generic_SendPacket;
newcon->Close = FTENET_Generic_Close;
newcon->islisten = isserver;
if (hybrid)
{
newcon->addrtype[0] = NA_IP;
newcon->addrtype[1] = NA_IPV6;
}
else
{
newcon->addrtype[0] = adr.type;
newcon->addrtype[1] = NA_INVALID;
}
newcon->thesocket = newsocket;
return newcon;
}
else
{
closesocket(newsocket);
return NULL;
}
#endif
}
#ifdef IPPROTO_IPV6
ftenet_generic_connection_t *FTENET_UDP6_EstablishConnection(qboolean isserver, const char *address)
{
return FTENET_Generic_EstablishConnection(NA_IPV6, IPPROTO_UDP, isserver, address);
}
#endif
#ifdef HAVE_IPV4
ftenet_generic_connection_t *FTENET_UDP4_EstablishConnection(qboolean isserver, const char *address)
{
return FTENET_Generic_EstablishConnection(NA_IP, IPPROTO_UDP, isserver, address);
}
#endif
#ifdef USEIPX
ftenet_generic_connection_t *FTENET_IPX_EstablishConnection(qboolean isserver, const char *address)
{
return FTENET_Generic_EstablishConnection(NA_IPX, NSPROTO_IPX, isserver, address);
}
#endif
#ifdef TCPCONNECT
typedef struct ftenet_tcpconnect_stream_s {
int socketnum;
int inlen;
int outlen;
enum
{
TCPC_UNKNOWN, //waiting to see what they send us.
TCPC_UNFRAMED, //something else is doing the framing (ie: we're running in emscripten and over some hidden websocket connection)
TCPC_HTTPCLIENT, //we're sending a file to this victim.
TCPC_QIZMO, //'qizmo\n' handshake, followed by packets prefixed with a 16bit packet length.
TCPC_WEBSOCKETU, //utf-8 encoded data.
TCPC_WEBSOCKETB, //binary encoded data (subprotocol = 'binary')
} clienttype;
char inbuffer[3000];
char outbuffer[3000];
vfsfile_t *file;
float timeouttime;
netadr_t remoteaddr;
struct ftenet_tcpconnect_stream_s *next;
} ftenet_tcpconnect_stream_t;
typedef struct {
ftenet_generic_connection_t generic;
int active;
ftenet_tcpconnect_stream_t *tcpstreams;
} ftenet_tcpconnect_connection_t;
void tobase64(unsigned char *out, int outlen, unsigned char *in, int inlen)
{
static unsigned char tab[64] =
{
'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f',
'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v',
'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/'
};
unsigned int usedbits = 0;
unsigned int val = 0;
outlen--;
while(inlen)
{
while(usedbits < 24 && inlen)
{
val <<= 8;
val |= (*in++);
inlen--;
usedbits += 8;
}
if (outlen < 4)
return;
val <<= 24 - usedbits;
*out++ = (usedbits > 0)?tab[(val>>18)&0x3f]:'=';
*out++ = (usedbits > 6)?tab[(val>>12)&0x3f]:'=';
*out++ = (usedbits > 12)?tab[(val>>6)&0x3f]:'=';
*out++ = (usedbits > 18)?tab[(val>>0)&0x3f]:'=';
val=0;
usedbits = 0;
}
*out = 0;
}
#include "fs.h"
int SHA1(char *digest, int maxdigestsize, char *string);
qboolean FTENET_TCPConnect_GetPacket(ftenet_generic_connection_t *gcon)
{
ftenet_tcpconnect_connection_t *con = (ftenet_tcpconnect_connection_t*)gcon;
int ret;
int err;
char adr[MAX_ADR_SIZE];
struct sockaddr_qstorage from;
int fromlen;
float timeval = Sys_DoubleTime();
ftenet_tcpconnect_stream_t *st;
st = con->tcpstreams;
//remove any stale ones
while (con->tcpstreams && con->tcpstreams->socketnum == INVALID_SOCKET)
{
st = con->tcpstreams;
con->tcpstreams = con->tcpstreams->next;
BZ_Free(st);
}
for (st = con->tcpstreams; st; st = st->next)
{//client receiving only via tcp
while (st->next && st->next->socketnum == INVALID_SOCKET)
{
ftenet_tcpconnect_stream_t *temp;
temp = st->next;
st->next = st->next->next;
BZ_Free(temp);
con->active--;
}
//due to the above checks about invalid sockets, the socket is always open for st below.
if (st->timeouttime < timeval)
{
Con_Printf ("tcp peer %s timed out\n", NET_AdrToString (adr, sizeof(adr), st->remoteaddr));
goto closesvstream;
}
ret = recv(st->socketnum, st->inbuffer+st->inlen, sizeof(st->inbuffer)-st->inlen, 0);
if (ret == 0)
{
Con_Printf ("tcp peer %s closed connection\n", NET_AdrToString (adr, sizeof(adr), st->remoteaddr));
goto closesvstream;
}
else if (ret == -1)
{
err = qerrno;
if (err == EWOULDBLOCK)
ret = 0;
else
{
if (err == ECONNABORTED || err == ECONNRESET)
{
Con_TPrintf (TL_CONNECTIONLOSTORABORTED); //server died/connection lost.
}
else
Con_Printf ("TCPConnect_GetPacket: Error (%i): %s\n", err, strerror(err));
closesvstream:
closesocket(st->socketnum);
st->socketnum = INVALID_SOCKET;
continue;
}
}
st->inlen += ret;
switch(st->clienttype)
{
case TCPC_UNKNOWN:
if (st->inlen < 6)
continue;
if (!strncmp(st->inbuffer, "qizmo\n", 6))
{
memmove(st->inbuffer, st->inbuffer+6, st->inlen - (6));
st->inlen -= 6;
st->clienttype = TCPC_QIZMO;
if (con->generic.islisten)
{
//send the qizmo handshake response.
send(st->socketnum, "qizmo\n", 6, 0);
}
}
else if (con->generic.islisten && !strncmp(st->inbuffer, "GET ", 4))
{
int i, j;
int attr = 0;
int alen = 0;
qboolean headerscomplete = false;
enum
{
WCATTR_METHOD,
WCATTR_URL,
WCATTR_HTTP,
WCATTR_HOST,
WCATTR_UPGRADE,
WCATTR_CONNECTION,
WCATTR_WSKEY,
WCATTR_WSVER,
//WCATTR_ORIGIN,
WCATTR_WSPROTO,
//WCATTR_WSEXT,
WCATTR_COUNT
};
char arg[WCATTR_COUNT][64];
for (i = 0; i < WCATTR_COUNT; i++)
arg[i][0] = 0;
for (i = 0; i < st->inlen; i++)
{
if (alen == 63)
goto handshakeerror;
if (st->inbuffer[i] == ' ' || st->inbuffer[i] == '\t')
{
arg[attr][alen++] = 0;
alen=0;
if (attr++ == WCATTR_HTTP)
break;
for (; i < st->inlen && (st->inbuffer[i] == ' ' || st->inbuffer[i] == '\t'); i++)
;
if (i == st->inlen)
break;
}
arg[attr][alen++] = st->inbuffer[i];
if (st->inbuffer[i] == '\n')
{
arg[attr][alen++] = 0;
alen=0;
break;
}
}
i++;
attr = 0;
j = i;
for (; i < st->inlen; i++)
{
if ((i+1 < st->inlen && st->inbuffer[i] == '\r' && st->inbuffer[i+1] == '\n') ||
(i < st->inlen && st->inbuffer[i] == '\n'))
{
i+=2;
headerscomplete = true;
break;
}
for (; i < st->inlen && (st->inbuffer[i] == ' ' || st->inbuffer[i] == '\t'); i++)
;
if (i == st->inlen)
break;
for (j = i; j < st->inlen; j++)
{
if (st->inbuffer[j] == ':' || st->inbuffer[j] == '\n')
{
/*set j to the end of the word, going back past whitespace*/
while (j > i && (st->inbuffer[j-1] == ' ' || st->inbuffer[i-1] == '\t'))
j--;
break;
}
}
if (!strnicmp(&st->inbuffer[i], "Host", j-i))
attr = WCATTR_HOST;
else if (!strnicmp(&st->inbuffer[i], "Upgrade", j-i))
attr = WCATTR_UPGRADE;
else if (!strnicmp(&st->inbuffer[i], "Connection", j-i))
attr = WCATTR_CONNECTION;
else if (!strnicmp(&st->inbuffer[i], "Sec-WebSocket-Key", j-i))
attr = WCATTR_WSKEY;
else if (!strnicmp(&st->inbuffer[i], "Sec-WebSocket-Version", j-i))
attr = WCATTR_WSVER;
// else if (!strnicmp(&st->inbuffer[i], "Origin", j-i))
// attr = WCATTR_ORIGIN;
else if (!strnicmp(&st->inbuffer[i], "Sec-WebSocket-Protocol", j-i))
attr = WCATTR_WSPROTO;
// else if (!strnicmp(&st->inbuffer[i], "Sec-WebSocket-Extensions", j-i))
// attr = WCATTR_WSEXT;
else
attr = 0;
i = j;
/*skip over the whitespace at the end*/
for (; i < st->inlen && (st->inbuffer[i] == ' ' || st->inbuffer[i] == '\t'); i++)
;
if (i < st->inlen && st->inbuffer[i] == ':')
{
i++;
for (; i < st->inlen && (st->inbuffer[i] == ' ' || st->inbuffer[i] == '\t'); i++)
;
j = i;
for (; i < st->inlen && st->inbuffer[i] != '\n'; i++)
;
if (i > j && st->inbuffer[i-1] == '\r')
i--;
if (attr)
Q_strncpyz(arg[attr], &st->inbuffer[j], (i-j > 63)?64:(i - j + 1));
if (i < st->inlen && st->inbuffer[i] == '\r')
i++;
}
else
{
/*just a word on the line on its own*/
goto handshakeerror;
}
}
if (headerscomplete)
{
char *resp;
//must be a Host, Upgrade=websocket, Connection=Upgrade, Sec-WebSocket-Key=base64(randbytes(16)), Sec-WebSocket-Version=13
//optionally will be Origin=url, Sec-WebSocket-Protocol=FTEWebSocket, Sec-WebSocket-Extensions
//other fields will be ignored.
if (!stricmp(arg[WCATTR_UPGRADE], "websocket") && (!stricmp(arg[WCATTR_CONNECTION], "Upgrade") || !stricmp(arg[WCATTR_CONNECTION], "keep-alive, Upgrade")))
{
if (atoi(arg[WCATTR_WSVER]) != 13)
{
Con_Printf("Outdated websocket request from %s. got version %i, expected version 13\n", arg[WCATTR_URL], NET_AdrToString (adr, sizeof(adr), st->remoteaddr), arg[WCATTR_WSVER]);
memmove(st->inbuffer, st->inbuffer+i, st->inlen - (i));
st->inlen -= i;
resp = va( "HTTP/1.1 426 Upgrade Required\r\n"
"Sec-WebSocket-Version: 13\r\n"
"\r\n");
//send the websocket handshake rejection.
send(st->socketnum, resp, strlen(resp), 0);
goto closesvstream;
}
else
{
char acceptkey[20*2];
unsigned char sha1digest[20];
memmove(st->inbuffer, st->inbuffer+i, st->inlen - (i));
st->inlen -= i;
tobase64(acceptkey, sizeof(acceptkey), sha1digest, SHA1(sha1digest, sizeof(sha1digest), va("%s258EAFA5-E914-47DA-95CA-C5AB0DC85B11", arg[WCATTR_WSKEY])));
Con_Printf("Websocket request for %s from %s\n", arg[WCATTR_URL], NET_AdrToString (adr, sizeof(adr), st->remoteaddr));
resp = va( "HTTP/1.1 101 Switching Protocols\r\n"
"Upgrade: websocket\r\n"
"Connection: Upgrade\r\n"
"Sec-WebSocket-Accept: %s\r\n"
// "Sec-WebSocket-Protocol: FTEWebSocket\r\n"
"\r\n", acceptkey);
//send the websocket handshake response.
send(st->socketnum, resp, strlen(resp), 0);
//and the connection is okay
if (!strcmp(arg[WCATTR_WSPROTO], "binary"))
st->clienttype = TCPC_WEBSOCKETB; //emscripten doesn't give us a choice, but its compact.
else
st->clienttype = TCPC_WEBSOCKETU; //nacl supports only utf-8 encoded data, at least at the time I implemented it.
}
}
else
{
memmove(st->inbuffer, st->inbuffer+i, st->inlen - (i));
st->inlen -= i;
if (!strcmp(arg[WCATTR_URL], "/live.html"))
{
resp = va( "HTTP/1.1 200 Ok\r\n"
"Connection: Close\r\n"
"Content-Type: text/html\r\n"
"\r\n"
""
""
""
""
"
"
"
\r\n"
""FULLENGINENAME""
);
}
//send the websocket handshake rejection.
send(st->socketnum, resp, strlen(resp), 0);
goto closesvstream;
}
}
}
else
{
handshakeerror:
Con_Printf ("Unknown TCP handshake from %s\n", NET_AdrToString (adr, sizeof(adr), net_from));
goto closesvstream;
}
break;
case TCPC_HTTPCLIENT:
if (st->outlen)
{ /*try and flush the old data*/
int done;
done = send(st->socketnum, st->outbuffer, st->outlen, 0);
if (done > 0)
{
memmove(st->outbuffer, st->outbuffer + done, st->outlen - done);
st->outlen -= done;
st->timeouttime = timeval + 30;
}
}
if (!st->outlen)
{
st->outlen = VFS_READ(st->file, st->outbuffer, sizeof(st->outbuffer));
if (st->outlen <= 0)
{
VFS_CLOSE(st->file);
st->file = NULL;
st->clienttype = TCPC_UNKNOWN;
Con_Printf ("Outgoing file transfer complete\n");
}
}
continue;
case TCPC_QIZMO:
if (st->inlen < 2)
continue;
net_message.cursize = BigShort(*(short*)st->inbuffer);
if (net_message.cursize >= sizeof(net_message_buffer) )
{
Con_TPrintf (TL_OVERSIZEPACKETFROM, NET_AdrToString (adr, sizeof(adr), st->remoteaddr));
goto closesvstream;
}
if (net_message.cursize+2 > st->inlen)
{ //not enough buffered to read a packet out of it.
continue;
}
memcpy(net_message_buffer, st->inbuffer+2, net_message.cursize);
memmove(st->inbuffer, st->inbuffer+net_message.cursize+2, st->inlen - (net_message.cursize+2));
st->inlen -= net_message.cursize+2;
net_message.packing = SZ_RAWBYTES;
net_message.currentbit = 0;
net_from = st->remoteaddr;
return true;
case TCPC_UNFRAMED:
if (!st->inlen)
continue;
net_message.cursize = st->inlen;
memcpy(net_message_buffer, st->inbuffer, net_message.cursize);
st->inlen = 0;
net_message.packing = SZ_RAWBYTES;
net_message.currentbit = 0;
net_from = st->remoteaddr;
return true;
case TCPC_WEBSOCKETU:
case TCPC_WEBSOCKETB:
while (st->inlen >= 2)
{
unsigned short ctrl = ((unsigned char*)st->inbuffer)[0]<<8 | ((unsigned char*)st->inbuffer)[1];
unsigned long paylen;
unsigned int payoffs = 2;
unsigned int mask = 0;
st->inbuffer[st->inlen]=0;
if ((ctrl & 0x7f) == 127)
{
//as a payload is not allowed to be encoded as too large a type, and quakeworld never used packets larger than 1450 bytes anyway, this code isn't needed (65k is the max even without this)
// if (sizeof(paylen) < 8)
{
Con_Printf ("%s: payload frame too large\n", NET_AdrToString (adr, sizeof(adr), st->remoteaddr));
goto closesvstream;
}
/* else
{
if (payoffs + 8 > st->inlen)
break;
paylen =
((unsigned char*)st->inbuffer)[payoffs+0]<<56 |
((unsigned char*)st->inbuffer)[payoffs+1]<<48 |
((unsigned char*)st->inbuffer)[payoffs+2]<<40 |
((unsigned char*)st->inbuffer)[payoffs+3]<<32 |
((unsigned char*)st->inbuffer)[payoffs+4]<<24 |
((unsigned char*)st->inbuffer)[payoffs+5]<<16 |
((unsigned char*)st->inbuffer)[payoffs+6]<<8 |
((unsigned char*)st->inbuffer)[payoffs+7]<<0;
if (paylen < 0x10000)
{
Con_Printf ("%s: payload size encoded badly\n", NET_AdrToString (st->remoteaddr, sizeof(st->remoteaddr), net_from));
goto closesvstream;
}
payoffs += 8;
}
*/ }
else if ((ctrl & 0x7f) == 126)
{
if (payoffs + 2 > st->inlen)
break;
paylen =
((unsigned char*)st->inbuffer)[payoffs+0]<<8 |
((unsigned char*)st->inbuffer)[payoffs+1]<<0;
if (paylen < 126)
{
Con_Printf ("%s: payload size encoded badly\n", NET_AdrToString (adr, sizeof(adr), st->remoteaddr));
goto closesvstream;
}
payoffs += 2;
}
else
{
paylen = ctrl & 0x7f;
}
if (ctrl & 0x80)
{
if (payoffs + 4 > st->inlen)
break;
/*this might read data that isn't set yet, but should be safe*/
((unsigned char*)&mask)[0] = ((unsigned char*)st->inbuffer)[payoffs+0];
((unsigned char*)&mask)[1] = ((unsigned char*)st->inbuffer)[payoffs+1];
((unsigned char*)&mask)[2] = ((unsigned char*)st->inbuffer)[payoffs+2];
((unsigned char*)&mask)[3] = ((unsigned char*)st->inbuffer)[payoffs+3];
payoffs += 4;
}
/*if there isn't space, try again next time around*/
if (payoffs + paylen > st->inlen)
break;
if (mask)
{
int i;
for (i = 0; i < paylen; i++)
{
((unsigned char*)st->inbuffer)[i + payoffs] ^= ((unsigned char*)&mask)[i&3];
}
}
net_message.cursize = 0;
switch((ctrl>>8) & 0xf)
{
case 0: /*continuation*/
Con_Printf ("websocket continuation frame from %s\n", NET_AdrToString (adr, sizeof(adr), st->remoteaddr));
goto closesvstream;
case 1: /*text frame*/
// Con_Printf ("websocket text frame from %s\n", NET_AdrToString (adr, sizeof(adr), st->remoteaddr));
{
/*text frames are pure utf-8 chars, no dodgy encodings or anything, all pre-checked...
except we're trying to send binary data.
so we need to unmask things (char 0 is encoded as 0x100 - truncate it)
*/
unsigned char *in = st->inbuffer+payoffs, *out = net_message_buffer;
int len = paylen;
while(len && out < net_message_buffer + sizeof(net_message_buffer))
{
if ((*in & 0xe0)==0xc0 && len > 1)
{
*out = ((in[0] & 0x1f)<<6) | ((in[1] & 0x3f)<<0);
in+=2;
len -= 2;
}
else if (*in & 0x80)
{
*out = '?';
in++;
len -= 1;
}
else
{
*out = in[0];
in++;
len -= 1;
}
out++;
}
net_message.cursize = out - net_message_buffer;
}
break;
case 2: /*binary frame*/
// Con_Printf ("websocket binary frame from %s\n", NET_AdrToString (adr, sizeof(adr), st->remoteaddr));
net_message.cursize = paylen;
if (net_message.cursize >= sizeof(net_message_buffer) )
{
Con_TPrintf (TL_OVERSIZEPACKETFROM, NET_AdrToString (adr, sizeof(adr), net_from));
goto closesvstream;
}
memcpy(net_message_buffer, st->inbuffer+payoffs, paylen);
break;
case 8: /*connection close*/
Con_Printf ("websocket closure %s\n", NET_AdrToString (adr, sizeof(adr), st->remoteaddr));
goto closesvstream;
case 9: /*ping*/
Con_Printf ("websocket ping from %s\n", NET_AdrToString (adr, sizeof(adr), st->remoteaddr));
goto closesvstream;
case 10: /*pong*/
Con_Printf ("websocket pong from %s\n", NET_AdrToString (adr, sizeof(adr), st->remoteaddr));
goto closesvstream;
default:
Con_Printf ("Unsupported websocket opcode (%i) from %s\n", (ctrl>>8) & 0xf, NET_AdrToString (adr, sizeof(adr), st->remoteaddr));
goto closesvstream;
}
// memcpy(net_message_buffer, st->inbuffer+2, net_message.cursize);
memmove(st->inbuffer, st->inbuffer+payoffs + paylen, st->inlen - (payoffs + paylen));
st->inlen -= payoffs + paylen;
if (net_message.cursize)
{
net_message.packing = SZ_RAWBYTES;
net_message.currentbit = 0;
net_from = st->remoteaddr;
return true;
}
}
break;
}
}
if (con->generic.thesocket != INVALID_SOCKET && con->active < 256)
{
int newsock;
fromlen = sizeof(from);
newsock = accept(con->generic.thesocket, (struct sockaddr*)&from, &fromlen);
if (newsock != INVALID_SOCKET)
{
int _true = true;
ioctlsocket(newsock, FIONBIO, (u_long *)&_true);
setsockopt(newsock, IPPROTO_TCP, TCP_NODELAY, (char *)&_true, sizeof(_true));
con->active++;
st = Z_Malloc(sizeof(*con->tcpstreams));
st->clienttype = TCPC_UNKNOWN;
st->next = con->tcpstreams;
con->tcpstreams = st;
st->socketnum = newsock;
st->inlen = 0;
/*grab the net address*/
SockadrToNetadr(&from, &st->remoteaddr);
/*sockadr doesn't contain transport info, so fix that up here*/
if (st->remoteaddr.type == NA_IP)
st->remoteaddr.type = NA_TCP;
else if (st->remoteaddr.type == NA_IPV6)
st->remoteaddr.type = NA_TCPV6;
st->timeouttime = timeval + 30;
}
}
return false;
}
qboolean FTENET_TCPConnect_SendPacket(ftenet_generic_connection_t *gcon, int length, void *data, netadr_t to)
{
ftenet_tcpconnect_connection_t *con = (ftenet_tcpconnect_connection_t*)gcon;
ftenet_tcpconnect_stream_t *st;
for (st = con->tcpstreams; st; st = st->next)
{
if (st->socketnum == INVALID_SOCKET)
continue;
if (NET_CompareAdr(to, st->remoteaddr))
{
if (!st->outlen)
{
switch(st->clienttype)
{
case TCPC_QIZMO:
{
unsigned short slen = BigShort((unsigned short)length);
if (st->outlen + sizeof(slen) + length > sizeof(st->outbuffer))
{
Con_DPrintf("FTENET_TCPConnect_SendPacket: outgoing overflow\n");
}
else
{
memcpy(st->outbuffer + st->outlen, &slen, sizeof(slen));
memcpy(st->outbuffer + st->outlen + sizeof(slen), data, length);
st->outlen += sizeof(slen) + length;
}
}
break;
case TCPC_UNFRAMED:
if (length > sizeof(st->outbuffer))
{
Con_DPrintf("FTENET_TCPConnect_SendPacket: outgoing overflow\n");
}
memcpy(st->outbuffer, data, length);
st->outlen = length;
break;
case TCPC_WEBSOCKETU:
case TCPC_WEBSOCKETB:
{
/*as a server, we don't need the mask stuff*/
unsigned short ctrl = (st->clienttype==TCPC_WEBSOCKETB)?0x8200:0x8100;
unsigned int paylen = 0;
unsigned int payoffs = 2;
int i;
switch((ctrl>>8) & 0xf)
{
case 1:
for (i = 0; i < length; i++)
{
paylen += (((char*)data)[i] == 0 || ((unsigned char*)data)[i] >= 0x80)?2:1;
}
break;
default:
paylen = length;
break;
}
if (paylen >= 126)
{
ctrl |= 126;
payoffs += 2;
}
else
ctrl |= paylen;
st->outbuffer[0] = ctrl>>8;
st->outbuffer[1] = ctrl&0xff;
if (paylen >= 126)
{
st->outbuffer[2] = paylen>>8;
st->outbuffer[3] = paylen&0xff;
}
switch((ctrl>>8) & 0xf)
{
case 1:/*utf8ify the data*/
for (i = 0; i < length; i++)
{
if (!((unsigned char*)data)[i])
{ /*0 is encoded as 0x100 to avoid safety checks*/
st->outbuffer[payoffs++] = 0xc0 | (0x100>>6);
st->outbuffer[payoffs++] = 0x80 | (0x100&0x3f);
}
else if (((unsigned char*)data)[i] >= 0x80)
{ /*larger bytes require markup*/
st->outbuffer[payoffs++] = 0xc0 | (((unsigned char*)data)[i]>>6);
st->outbuffer[payoffs++] = 0x80 | (((unsigned char*)data)[i]&0x3f);
}
else
{ /*lower 7 bits are as-is*/
st->outbuffer[payoffs++] = ((char*)data)[i];
}
}
break;
default: //raw data
memcpy(st->outbuffer+payoffs, data, length);
payoffs += length;
break;
}
st->outlen = payoffs;
}
break;
default:
break;
}
}
if (st->outlen)
{ /*try and flush the old data*/
int done;
done = send(st->socketnum, st->outbuffer, st->outlen, 0);
if (done > 0)
{
memmove(st->outbuffer, st->outbuffer + done, st->outlen - done);
st->outlen -= done;
}
}
st->timeouttime = Sys_DoubleTime() + 20;
return true;
}
}
return false;
}
void FTENET_TCPConnect_Close(ftenet_generic_connection_t *gcon)
{
ftenet_tcpconnect_connection_t *con = (ftenet_tcpconnect_connection_t*)gcon;
ftenet_tcpconnect_stream_t *st;
st = con->tcpstreams;
while (con->tcpstreams)
{
st = con->tcpstreams;
con->tcpstreams = st->next;
if (st->socketnum != INVALID_SOCKET)
closesocket(st->socketnum);
BZ_Free(st);
}
FTENET_Generic_Close(gcon);
}
#ifdef HAVE_PACKET
int FTENET_TCPConnect_SetReceiveFDSet(ftenet_generic_connection_t *gcon, fd_set *fdset)
{
int maxfd = 0;
ftenet_tcpconnect_connection_t *con = (ftenet_tcpconnect_connection_t*)gcon;
ftenet_tcpconnect_stream_t *st;
for (st = con->tcpstreams; st; st = st->next)
{
if (st->socketnum == INVALID_SOCKET)
continue;
FD_SET(st->socketnum, fdset); // network socket
if (maxfd < st->socketnum)
maxfd = st->socketnum;
}
if (con->generic.thesocket != INVALID_SOCKET)
{
FD_SET(con->generic.thesocket, fdset); // network socket
if (maxfd < con->generic.thesocket)
maxfd = con->generic.thesocket;
}
return maxfd;
}
#endif
ftenet_generic_connection_t *FTENET_TCPConnect_EstablishConnection(int affamily, qboolean isserver, const char *address)
{
//this is written to support either ipv4 or ipv6, depending on the remote addr.
ftenet_tcpconnect_connection_t *newcon;
unsigned long _true = true;
int newsocket;
int temp;
netadr_t adr;
struct sockaddr_qstorage qs;
int family;
if (!strncmp(address, "tcp://", 6))
address += 6;
if (!strncmp(address, "ws://", 5))
address += 5;
if (!strncmp(address, "wss://", 6))
address += 6;
if (isserver)
{
#ifndef HAVE_PACKET
//unable to listen on tcp if we have no packet interface
return NULL;
#else
if (!NET_PortToAdr(affamily, address, &adr))
return NULL; //couldn't resolve the name
if (adr.type == NA_IP)
adr.type = NA_TCP;
temp = NetadrToSockadr(&adr, &qs);
family = ((struct sockaddr_in*)&qs)->sin_family;
if ((newsocket = socket (family, SOCK_STREAM, IPPROTO_TCP)) == INVALID_SOCKET)
{
Con_Printf("operating system doesn't support that\n");
return NULL;
}
if ((bind(newsocket, (struct sockaddr *)&qs, temp) == INVALID_SOCKET) ||
(listen(newsocket, 2) == INVALID_SOCKET))
{
SockadrToNetadr(&qs, &adr);
//mneh, reuse qs.
NET_AdrToString((char*)&qs, sizeof(qs), adr);
Con_Printf("Unable to listen at %s\n", (char*)&qs);
closesocket(newsocket);
return NULL;
}
if (ioctlsocket (newsocket, FIONBIO, &_true) == -1)
Sys_Error ("UDP_OpenSocket: ioctl FIONBIO: %s", strerror(qerrno));
#endif
}
else
{
if (!NET_StringToAdr(address, 0, &adr))
return NULL; //couldn't resolve the name
if (adr.type == NA_IP)
adr.type = NA_TCP;
newsocket = TCP_OpenStream(adr);
if (newsocket == INVALID_SOCKET)
return NULL;
}
//this isn't fatal
setsockopt(newsocket, IPPROTO_TCP, TCP_NODELAY, (char *)&_true, sizeof(_true));
newcon = Z_Malloc(sizeof(*newcon));
if (newcon)
{
if (isserver)
newcon->generic.GetLocalAddress = FTENET_Generic_GetLocalAddress;
newcon->generic.GetPacket = FTENET_TCPConnect_GetPacket;
newcon->generic.SendPacket = FTENET_TCPConnect_SendPacket;
newcon->generic.Close = FTENET_TCPConnect_Close;
#ifdef HAVE_PACKET
newcon->generic.SetReceiveFDSet = FTENET_TCPConnect_SetReceiveFDSet;
#endif
newcon->generic.islisten = isserver;
newcon->generic.addrtype[0] = adr.type;
newcon->generic.addrtype[1] = NA_INVALID;
newcon->active = 0;
if (!isserver)
{
newcon->generic.thesocket = INVALID_SOCKET;
newcon->active++;
newcon->tcpstreams = Z_Malloc(sizeof(*newcon->tcpstreams));
newcon->tcpstreams->next = NULL;
newcon->tcpstreams->socketnum = newsocket;
newcon->tcpstreams->inlen = 0;
newcon->tcpstreams->remoteaddr = adr;
#ifdef FTE_TARGET_WEB
newcon->tcpstreams->clienttype = TCPC_UNFRAMED;
#else
//send the qizmo greeting.
newcon->tcpstreams->clienttype = TCPC_UNKNOWN;
send(newsocket, "qizmo\n", 6, 0);
#endif
newcon->tcpstreams->timeouttime = Sys_DoubleTime() + 30;
}
else
{
newcon->tcpstreams = NULL;
newcon->generic.thesocket = newsocket;
}
return &newcon->generic;
}
else
{
closesocket(newsocket);
return NULL;
}
}
#ifdef IPPROTO_IPV6
ftenet_generic_connection_t *FTENET_TCP6Connect_EstablishConnection(qboolean isserver, const char *address)
{
return FTENET_TCPConnect_EstablishConnection(NA_TCPV6, isserver, address);
}
#endif
ftenet_generic_connection_t *FTENET_TCP4Connect_EstablishConnection(qboolean isserver, const char *address)
{
return FTENET_TCPConnect_EstablishConnection(NA_TCP, isserver, address);
}
#endif
#ifdef IRCCONNECT
typedef struct ftenet_ircconnect_stream_s {
char theiruser[16];
int inlen;
char inbuffer[1500];
float timeouttime;
netadr_t remoteaddr;
struct ftenet_ircconnect_stream_s *next;
} ftenet_ircconnect_stream_t;
typedef struct {
ftenet_generic_connection_t generic;
netadr_t ircserver;
char incoming[512+1];
int income;
char ourusername[16];
char usechannel[16];
char outbuf[8192];
unsigned int outbufcount;
ftenet_ircconnect_stream_t *streams;
} ftenet_ircconnect_connection_t;
qboolean FTENET_IRCConnect_GetPacket(ftenet_generic_connection_t *gcon)
{
unsigned char *s, *start, *end, *endl;
int read;
unsigned char *from;
int fromlen;
int code;
char adr[128];
ftenet_ircconnect_connection_t *con = (ftenet_ircconnect_connection_t*)gcon;
if (con->generic.thesocket == INVALID_SOCKET)
{
if (con->income == 0)
{
cvar_t *ircuser = Cvar_Get("ircuser", "none", 0, "IRC Connect");
cvar_t *irchost = Cvar_Get("irchost", "none", 0, "IRC Connect");
cvar_t *ircnick = Cvar_Get("ircnick", "ftesv", 0, "IRC Connect");
//cvar_t *ircchannel = Cvar_Get("ircchannel", "#ftetest", 0, "IRC Connect"); //warning: unused variable ‘ircchannel’
cvar_t *ircsomething = Cvar_Get("ircsomething", "moo", 0, "IRC Connect");
cvar_t *ircclientaddr = Cvar_Get("ircclientaddr", "127.0.0.1", 0, "IRC Connect");
con->generic.thesocket = TCP_OpenStream(con->ircserver);
Q_strncpyz(con->ourusername, ircnick->string, sizeof(con->ourusername));
send(con->generic.thesocket, "USER ", 5, 0);
send(con->generic.thesocket, ircuser->string, strlen(ircuser->string), 0);
send(con->generic.thesocket, " ", 1, 0);
send(con->generic.thesocket, irchost->string, strlen(irchost->string), 0);
send(con->generic.thesocket, " ", 1, 0);
send(con->generic.thesocket, ircclientaddr->string, strlen(ircclientaddr->string), 0);
send(con->generic.thesocket, " :", 2, 0);
send(con->generic.thesocket, ircsomething->string, strlen(ircsomething->string), 0);
send(con->generic.thesocket, "\r\n", 2, 0);
send(con->generic.thesocket, "NICK ", 5, 0);
send(con->generic.thesocket, con->ourusername, strlen(con->ourusername), 0);
send(con->generic.thesocket, "\r\n", 2, 0);
}
}
else
{
read = recv(con->generic.thesocket, con->incoming+con->income, sizeof(con->incoming)-1 - con->income, 0);
if (read < 0)
{
read = qerrno;
switch(read)
{
case ECONNABORTED:
case ECONNRESET:
closesocket(con->generic.thesocket);
con->generic.thesocket = INVALID_SOCKET;
break;
default:
break;
}
read = 0;//return false;
}
else if (read == 0) //they disconnected.
{
closesocket(con->generic.thesocket);
con->generic.thesocket = INVALID_SOCKET;
}
con->income += read;
con->incoming[con->income] = 0;
}
start = con->incoming;
end = start+con->income;
while (start < end)
{
endl = NULL;
for (s = start; s < end; s++)
{
if (*s == '\n')
{
endl = s;
break;
}
}
if (endl == NULL)
//not got a complete command.
break;
s = start;
while(*s == ' ')
s++;
if (*s == ':')
{
s++;
from = s;
while(s sizeof(net_from.address.irc.user)-1)
fromlen = sizeof(net_from.address.irc.user)-1;
for (code = 0; code < fromlen; code++)
if (from[code] == '!')
{
fromlen = code;
break;
}
net_from.type = NA_IRC;
memcpy(net_from.address.irc.user, from, fromlen);
net_from.address.irc.user[fromlen] = 0;
dest = s;
//discard the destination name
while(s= sizeof(net_from.address.irc.channel))
{ //no space, just pretend it was direct.
net_from.address.irc.channel[0] = 0;
}
else
{
memcpy(net_from.address.irc.channel, dest, s-dest);
net_from.address.irc.channel[s-dest] = 0;
if (!strcmp(net_from.address.irc.channel, con->ourusername))
{ //this was aimed at us. clear the channel.
net_from.address.irc.channel[0] = 0;
}
}
while(*s == ' ')
s++;
if (*s == ':')
{
s++;
if (*s == '!')
{
s++;
/*interpret as a connectionless packet*/
net_message.cursize = 4 + endl - s;
if (net_message.cursize >= sizeof(net_message_buffer) )
{
Con_TPrintf (TL_OVERSIZEPACKETFROM, NET_AdrToString (adr, sizeof(adr), net_from));
break;
}
*(unsigned int*)net_message_buffer = ~0;
memcpy(net_message_buffer+4, s, net_message.cursize);
net_message.packing = SZ_RAWBYTES;
net_message.currentbit = 0;
//clean up the incoming data
memmove(con->incoming, start, end - (endl+1));
con->income = end - (endl+1);
con->incoming[con->income] = 0;
return true;
}
if (*s == '$')
{
unsigned char *nstart = s;
while (*s != '\r' && *s != '\n' && *s != '#' && *s != ' ' && *s != ':')
s++;
if (*s == '#')
{
if (strncmp(nstart, con->ourusername, strlen(con->ourusername)) || strlen(con->ourusername) != s - nstart)
while(*s == '#')
s++;
}
}
if (*s == '#')
{
ftenet_ircconnect_stream_t *st;
int psize;
for (st = con->streams; st; st = st->next)
{
if (!strncmp(st->remoteaddr.address.irc.user, from, fromlen) && st->remoteaddr.address.irc.user[fromlen] == 0)
break;
}
if (!st)
{
st = Z_Malloc(sizeof(*st));
st->remoteaddr = net_from;
st->next = con->streams;
con->streams = st;
}
//skip over the hash
s++;
psize = 0;
if (*s >= 'a' && *s <= 'f')
psize += *s - 'a' + 10;
else if (*s >= '0' && *s <= '9')
psize += *s - '0';
s++;
psize*=16;
if (*s >= 'a' && *s <= 'f')
psize += *s - 'a' + 10;
else if (*s >= '0' && *s <= '9')
psize += *s - '0';
s++;
psize*=16;
if (*s >= 'a' && *s <= 'f')
psize += *s - 'a' + 10;
else if (*s >= '0' && *s <= '9')
psize += *s - '0';
s++;
while (s < endl && st->inlen < sizeof(st->inbuffer))
{
switch (*s)
{
//handle markup
case '\\':
s++;
if (s < endl)
{
switch(*s)
{
case '\\':
st->inbuffer[st->inlen++] = *s;
break;
case 'n':
st->inbuffer[st->inlen++] = '\n';
break;
case 'r':
st->inbuffer[st->inlen++] = '\r';
break;
case '0':
st->inbuffer[st->inlen++] = 0;
break;
default:
st->inbuffer[st->inlen++] = '?';
break;
}
}
break;
//ignore these
case '\n':
case '\r':
case '\0': //this one doesn't have to be ignored.
break;
//handle normal char
default:
st->inbuffer[st->inlen++] = *s;
break;
}
s++;
}
if (st->inlen > psize || psize >= sizeof(net_message_buffer) )
{
st->inlen = 0;
Con_Printf ("Corrupt packet from %s\n", NET_AdrToString (adr, sizeof(adr), net_from));
}
else if (st->inlen == psize)
{
/*interpret as a connectionless packet*/
net_message.cursize = st->inlen;
if (net_message.cursize >= sizeof(net_message_buffer) )
{
Con_TPrintf (TL_OVERSIZEPACKETFROM, NET_AdrToString (adr, sizeof(adr), net_from));
break;
}
memcpy(net_message_buffer, st->inbuffer, net_message.cursize);
net_message.packing = SZ_RAWBYTES;
net_message.currentbit = 0;
st->inlen = 0;
//clean up the incoming data
memmove(con->incoming, start, end - (endl+1));
con->income = end - (endl+1);
con->incoming[con->income] = 0;
return true;
}
}
}
}
else if (!strncmp(s, "PING ", 5))
{
send(con->generic.thesocket, "PONG ", 5, 0);
send(con->generic.thesocket, s+5, endl - s - 5, 0);
send(con->generic.thesocket, "\r\n", 2, 0);
}
else
{
code = strtoul(s, (char **)&s, 10);
switch (code)
{
case 001:
{
cvar_t *ircchannel = Cvar_Get("ircchannel", "", 0, "IRC Connect");
if (*ircchannel->string)
{
send(con->generic.thesocket, "JOIN ", 5, 0);
send(con->generic.thesocket, ircchannel->string, strlen(ircchannel->string), 0);
send(con->generic.thesocket, "\r\n", 2, 0);
}
}
break;
case 433:
//nick already in use
send(con->generic.thesocket, "NICK ", 5, 0);
{
cvar_t *ircnick2 = Cvar_Get("ircnick2", "YIBBLE", 0, "IRC Connect");
Q_strncpyz(con->ourusername, ircnick2->string, sizeof(con->ourusername));
send(con->generic.thesocket, con->ourusername, strlen(con->ourusername), 0);
}
send(con->generic.thesocket, "\r\n", 2, 0);
break;
case 0:
//non-numerical event.
break;
}
}
while(*s == ' ')
s++;
start = s = endl+1;
}
memmove(con->incoming, start, end - start);
con->income = end - start;
con->incoming[con->income] = 0;
if (con->generic.thesocket == INVALID_SOCKET)
con->income = 0;
return false;
}
qboolean FTENET_IRCConnect_SendPacket(ftenet_generic_connection_t *gcon, int length, void *data, netadr_t to)
{
ftenet_ircconnect_connection_t *con = (ftenet_ircconnect_connection_t*)gcon;
unsigned char *buffer;
unsigned char *lenofs;
int packed;
int fulllen = length;
int newoutcount;
for (packed = 0; packed < FTENET_ADDRTYPES; packed++)
if (to.type == con->generic.addrtype[packed])
break;
if (packed == FTENET_ADDRTYPES)
return false;
packed = 0;
if (con->generic.thesocket == INVALID_SOCKET)
return true;
/*
if (*(unsigned int *)data == ~0 && !strchr(data, '\n') && !strchr(data, '\r') && strlen(data) == length)
{
if (send(con->generic.thesocket, va("PRIVMSG %s :!", to.address.irc.user), 15, 0) != 15)
Con_Printf("bad send\n");
else if (send(con->generic.thesocket, (char*)data+4, length - 4, 0) != length-4)
Con_Printf("bad send\n");
else if (send(con->generic.thesocket, "\r\n", 2, 0) != 2)
Con_Printf("bad send\n");
return true;
}
*/
newoutcount = con->outbufcount;
if (!con->outbufcount)
while(length)
{
buffer = con->outbuf + newoutcount;
if (*to.address.irc.channel)
{
int unamelen;
int chanlen;
unamelen = strlen(to.address.irc.user);
chanlen = strlen(to.address.irc.channel);
packed = 8+chanlen+3+unamelen+1 + 3;
if (packed+1 + newoutcount > sizeof(con->outbuf))
break;
memcpy(buffer, "PRIVMSG ", 8);
memcpy(buffer+8, to.address.irc.channel, chanlen);
memcpy(buffer+8+chanlen, " :$", 3);
memcpy(buffer+8+chanlen+3, to.address.irc.user, unamelen);
memcpy(buffer+8+chanlen+3+unamelen, "#", 1);
lenofs = buffer+8+chanlen+3+unamelen+1;
sprintf(lenofs, "%03x", fulllen);
}
else
{
int unamelen;
unamelen = strlen(to.address.irc.user);
packed = 8 + unamelen + 3 + 3;
if (packed+1 + newoutcount > sizeof(con->outbuf))
break;
memcpy(buffer, "PRIVMSG ", 8);
memcpy(buffer+8, to.address.irc.user, unamelen);
memcpy(buffer+8+unamelen, " :#", 3);
lenofs = buffer+8+unamelen+3;
sprintf(lenofs, "%03x", fulllen);
}
while(length && packed < 400 && packed+newoutcount < sizeof(con->outbuf)-2) //make sure there's always space
{
switch(*(unsigned char*)data)
{
case '\\':
buffer[packed++] = '\\';
buffer[packed++] = '\\';
break;
case '\n':
buffer[packed++] = '\\';
buffer[packed++] = 'n';
break;
case '\r':
buffer[packed++] = '\\';
buffer[packed++] = 'r';
break;
case '\0':
buffer[packed++] = '\\';
buffer[packed++] = '0';
break;
default:
buffer[packed++] = *(unsigned char*)data;
break;
}
length--;
data = (char*)data + 1;
}
buffer[packed++] = '\r';
buffer[packed++] = '\n';
newoutcount += packed;
packed = 0;
}
if (!length)
{
//only if we flushed all
con->outbufcount = newoutcount;
}
//try and flush it
length = send(con->generic.thesocket, con->outbuf, con->outbufcount, 0);
if (length > 0)
{
memmove(con->outbuf, con->outbuf+length, con->outbufcount-length);
con->outbufcount -= length;
}
return true;
}
void FTENET_IRCConnect_Close(ftenet_generic_connection_t *gcon)
{
ftenet_ircconnect_connection_t *con = (ftenet_ircconnect_connection_t *)gcon;
ftenet_ircconnect_stream_t *st;
while(con->streams)
{
st = con->streams;
con->streams = st->next;
Z_Free(st);
}
FTENET_Generic_Close(gcon);
}
struct ftenet_generic_connection_s *FTENET_IRCConnect_EstablishConnection(qboolean isserver, const char *address)
{
//this is written to support either ipv4 or ipv6, depending on the remote addr.
ftenet_ircconnect_connection_t *newcon;
netadr_t adr;
if (!NET_StringToAdr(address, 6667, &adr))
return NULL; //couldn't resolve the name
newcon = Z_Malloc(sizeof(*newcon));
if (newcon)
{
newcon->generic.GetPacket = FTENET_IRCConnect_GetPacket;
newcon->generic.SendPacket = FTENET_IRCConnect_SendPacket;
newcon->generic.Close = FTENET_IRCConnect_Close;
newcon->generic.islisten = isserver;
newcon->generic.addrtype[0] = NA_IRC;
newcon->generic.addrtype[1] = NA_INVALID;
newcon->generic.thesocket = INVALID_SOCKET;
newcon->ircserver = adr;
return &newcon->generic;
}
else
{
return NULL;
}
}
#endif
#ifdef HAVE_WEBSOCKCL
#include
#include
#include
#include
#include
#include
extern PPB_Core *ppb_core;
extern PPB_WebSocket *ppb_websocket_interface;
extern PPB_Var *ppb_var_interface;
extern PP_Instance pp_instance;
typedef struct
{
ftenet_generic_connection_t generic;
PP_Resource sock;
netadr_t remoteadr;
qboolean havepacket;
struct PP_Var incomingpacket;
qboolean failed;
} ftenet_websocket_connection_t;
static void websocketgot(void *user_data, int32_t result)
{
ftenet_websocket_connection_t *wsc = user_data;
if (result == PP_OK)
{
wsc->havepacket = true;
}
else
{
Sys_Printf("%s: %i\n", __func__, result);
wsc->failed = true;
}
}
static void websocketconnected(void *user_data, int32_t result)
{
ftenet_websocket_connection_t *wsc = user_data;
if (result == PP_OK)
{
int res;
//we got a successful connection, enable reception.
struct PP_CompletionCallback ccb = {websocketgot, wsc, PP_COMPLETIONCALLBACK_FLAG_OPTIONAL};
res = ppb_websocket_interface->ReceiveMessage(wsc->sock, &wsc->incomingpacket, ccb);
if (res != PP_OK_COMPLETIONPENDING)
websocketgot(wsc, res);
}
else
{
Sys_Printf("%s: %i\n", __func__, result);
//some sort of error connecting, make it timeout now
wsc->failed = true;
}
}
static void websocketclosed(void *user_data, int32_t result)
{
ftenet_websocket_connection_t *wsc = user_data;
if (wsc->havepacket)
{
wsc->havepacket = false;
ppb_var_interface->Release(wsc->incomingpacket);
}
ppb_core->ReleaseResource(wsc->sock);
// Z_Free(wsc);
}
static void FTENET_WebSocket_Close(ftenet_generic_connection_t *gcon)
{
int res;
/*meant to free the memory too, in this case we get the callback to do it*/
ftenet_websocket_connection_t *wsc = (void*)gcon;
struct PP_CompletionCallback ccb = {websocketclosed, wsc, PP_COMPLETIONCALLBACK_FLAG_NONE};
ppb_websocket_interface->Close(wsc->sock, PP_WEBSOCKETSTATUSCODE_NORMAL_CLOSURE, PP_MakeUndefined(), ccb);
}
static qboolean FTENET_WebSocket_GetPacket(ftenet_generic_connection_t *gcon)
{
ftenet_websocket_connection_t *wsc = (void*)gcon;
int res;
int len = 0;
if (wsc->havepacket)
{
unsigned char *utf8 = (unsigned char *)ppb_var_interface->VarToUtf8(wsc->incomingpacket, &len);
unsigned char *out = (unsigned char *)net_message_buffer;
wsc->havepacket = false;
memcpy(&net_from, &wsc->remoteadr, sizeof(net_from));
while(len && out < net_message_buffer + sizeof(net_message_buffer))
{
if ((*utf8 & 0xe0)==0xc0 && len > 1)
{
*out = ((utf8[0] & 0x1f)<<6) | ((utf8[1] & 0x3f)<<0);
utf8+=2;
len -= 2;
}
else if (*utf8 & 0x80)
{
*out = '?';
utf8++;
len -= 1;
}
else
{
*out = utf8[0];
utf8++;
len -= 1;
}
out++;
}
net_message.cursize = out - net_message_buffer;
ppb_var_interface->Release(wsc->incomingpacket);
if (!wsc->failed)
{
//get the next one
struct PP_CompletionCallback ccb = {websocketgot, wsc, PP_COMPLETIONCALLBACK_FLAG_OPTIONAL};
res = ppb_websocket_interface->ReceiveMessage(wsc->sock, &wsc->incomingpacket, ccb);
if (res != PP_OK_COMPLETIONPENDING)
websocketgot(wsc, res);
}
if (len)
{
char adr[64];
Con_TPrintf (TL_OVERSIZEPACKETFROM, NET_AdrToString (adr, sizeof(adr), net_from));
return false;
}
return true;
}
return false;
}
static qboolean FTENET_WebSocket_SendPacket(ftenet_generic_connection_t *gcon, int length, void *data, netadr_t to)
{
ftenet_websocket_connection_t *wsc = (void*)gcon;
int res;
int outchars = 0;
unsigned char outdata[length*2+1];
unsigned char *out=outdata, *in=data;
if (wsc->failed)
return false;
while(length-->0)
{
if (!*in)
{
//sends 256 instead of 0
*out++ = 0xc0 | (0x100 >> 6);
*out++ = 0x80 | (0x100 & 0x3f);
}
else if (*in >= 0x80)
{
*out++ = 0xc0 | (*in >> 6);
*out++ = 0x80 | (*in & 0x3f);
}
else
*out++ = *in;
in++;
outchars++;
}
*out = 0;
struct PP_Var str = ppb_var_interface->VarFromUtf8(outdata, out - outdata);
res = ppb_websocket_interface->SendMessage(wsc->sock, str);
// Sys_Printf("FTENET_WebSocket_SendPacket: result %i\n", res);
ppb_var_interface->Release(str);
return true;
}
/*nacl websockets implementation...*/
static ftenet_generic_connection_t *FTENET_WebSocket_EstablishConnection(qboolean isserver, const char *address)
{
ftenet_websocket_connection_t *newcon;
netadr_t adr;
PP_Resource newsocket;
if (isserver || !ppb_websocket_interface)
{
return NULL;
}
if (!NET_StringToAdr(address, 80, &adr))
return NULL; //couldn't resolve the name
newcon = Z_Malloc(sizeof(*newcon));
if (newcon)
{
struct PP_CompletionCallback ccb = {websocketconnected, newcon, PP_COMPLETIONCALLBACK_FLAG_NONE};
newsocket = ppb_websocket_interface->Create(pp_instance);
struct PP_Var str = ppb_var_interface->VarFromUtf8(adr.address.websocketurl, strlen(adr.address.websocketurl));
ppb_websocket_interface->Connect(newsocket, str, NULL, 0, ccb);
ppb_var_interface->Release(str);
Q_strncpyz(newcon->generic.name, "WebSocket", sizeof(newcon->generic.name));
newcon->generic.GetPacket = FTENET_WebSocket_GetPacket;
newcon->generic.SendPacket = FTENET_WebSocket_SendPacket;
newcon->generic.Close = FTENET_WebSocket_Close;
newcon->generic.islisten = isserver;
newcon->generic.addrtype[0] = NA_WEBSOCKET;
newcon->generic.addrtype[1] = NA_INVALID;
newcon->generic.thesocket = INVALID_SOCKET;
newcon->sock = newsocket;
newcon->remoteadr = adr;
return &newcon->generic;
}
return NULL;
}
#endif
/*firstsock is a cookie*/
int NET_GetPacket (netsrc_t netsrc, int firstsock)
{
ftenet_connections_t *collection;
if (netsrc == NS_SERVER)
{
#ifdef CLIENTONLY
Sys_Error("NET_GetPacket: Bad netsrc");
collection = NULL;
#else
collection = svs.sockets;
#endif
}
else
{
#ifdef SERVERONLY
Sys_Error("NET_GetPacket: Bad netsrc");
collection = NULL;
#else
collection = cls.sockets;
#endif
}
if (!collection)
return -1;
while (firstsock < MAX_CONNECTIONS)
{
if (!collection->conn[firstsock])
break;
if (collection->conn[firstsock]->GetPacket(collection->conn[firstsock]))
{
if (net_fakeloss.value)
{
if (frandom () < net_fakeloss.value)
continue;
}
net_from.connum = firstsock+1;
return firstsock;
}
firstsock += 1;
}
return -1;
}
int NET_LocalAddressForRemote(ftenet_connections_t *collection, netadr_t *remote, netadr_t *local, int idx)
{
if (!remote->connum)
return 0;
if (!collection->conn[remote->connum-1])
return 0;
if (!collection->conn[remote->connum-1]->GetLocalAddress)
return 0;
return collection->conn[remote->connum-1]->GetLocalAddress(collection->conn[remote->connum-1], local, idx);
}
void NET_SendPacket (netsrc_t netsrc, int length, void *data, netadr_t to)
{
char buffer[64];
ftenet_connections_t *collection;
int i;
if (netsrc == NS_SERVER)
{
#ifdef CLIENTONLY
Sys_Error("NET_GetPacket: Bad netsrc");
return;
#else
collection = svs.sockets;
#endif
}
else
{
#ifdef SERVERONLY
Sys_Error("NET_GetPacket: Bad netsrc");
return;
#else
collection = cls.sockets;
#endif
}
if (!collection)
return;
if (net_fakeloss.value)
{
if (frandom () < net_fakeloss.value)
return;
}
if (to.connum)
{
if (collection->conn[to.connum-1])
if (collection->conn[to.connum-1]->SendPacket(collection->conn[to.connum-1], length, data, to))
return;
}
for (i = 0; i < MAX_CONNECTIONS; i++)
{
if (!collection->conn[i])
continue;
if (collection->conn[i]->SendPacket(collection->conn[i], length, data, to))
return;
}
Con_Printf("No route to %s - try reconnecting\n", NET_AdrToString(buffer, sizeof(buffer), to));
}
qboolean NET_EnsureRoute(ftenet_connections_t *collection, char *routename, char *host, qboolean islisten)
{
netadr_t adr;
NET_StringToAdr(host, 0, &adr);
switch(adr.type)
{
case NA_WEBSOCKET:
case NA_TCP:
case NA_TCPV6:
case NA_IRC:
if (!FTENET_AddToCollection(collection, routename, host, adr.type, islisten))
return false;
break;
default:
//not recognised, or not needed
break;
}
return true;
}
void NET_PrintAddresses(ftenet_connections_t *collection)
{
int i;
int adrno, adrcount=1;
netadr_t adr;
char adrbuf[MAX_ADR_SIZE];
if (!collection)
return;
for (i = 0; i < MAX_CONNECTIONS; i++)
{
if (!collection->conn[i])
continue;
adrno = 0;
if (collection->conn[i]->GetLocalAddress)
{
for (adrcount=1; (adrcount = collection->conn[i]->GetLocalAddress(collection->conn[i], &adr, adrno)) && adrno < adrcount; adrno++)
{
Con_Printf("net address (%s): %s\n", collection->conn[i]->name, NET_AdrToString(adrbuf, sizeof(adrbuf), adr));
}
}
if (!adrno)
Con_Printf("net address (%s): no addresses\n", collection->conn[i]->name);
}
}
//=============================================================================
int TCP_OpenStream (netadr_t remoteaddr)
{
#ifndef HAVE_TCP
return INVALID_SOCKET;
#else
unsigned long _true = true;
int newsocket;
int temp;
struct sockaddr_qstorage qs;
// struct sockaddr_qstorage loc;
int recvbufsize = (1<<19);//512kb
temp = NetadrToSockadr(&remoteaddr, &qs);
if ((newsocket = socket (((struct sockaddr_in*)&qs)->sin_family, SOCK_STREAM, IPPROTO_TCP)) == INVALID_SOCKET)
return INVALID_SOCKET;
setsockopt(newsocket, SOL_SOCKET, SO_RCVBUF, (void*)&recvbufsize, sizeof(recvbufsize));
// memset(&loc, 0, sizeof(loc));
// ((struct sockaddr*)&loc)->sa_family = ((struct sockaddr*)&loc)->sa_family;
// bind(newsocket, (struct sockaddr *)&loc, ((struct sockaddr_in*)&qs)->sin_family == AF_INET?sizeof(struct sockaddr_in):sizeof(struct sockaddr_in6));
if (connect(newsocket, (struct sockaddr *)&qs, temp) == INVALID_SOCKET)
{
int err = qerrno;
if (err == EADDRNOTAVAIL)
{
char buf[128];
NET_AdrToString(buf, sizeof(buf), remoteaddr);
if (remoteaddr.port == 0 && (remoteaddr.type == NA_IP || remoteaddr.type == NA_IPV6))
Con_Printf ("TCP_OpenStream: no port specified\n");
else
Con_Printf ("TCP_OpenStream: invalid address trying to connect to %s\n", buf);
}
else
Con_Printf ("TCP_OpenStream: connect: error %i\n", err);
closesocket(newsocket);
return INVALID_SOCKET;
}
if (ioctlsocket (newsocket, FIONBIO, &_true) == -1)
Sys_Error ("UDP_OpenSocket: ioctl FIONBIO: %s", strerror(qerrno));
return newsocket;
#endif
}
/*int TCP_OpenListenSocket (const char *localip, int port)
{
#ifndef HAVE_TCP
return INVALID_SOCKET;
#else
int newsocket;
struct sockaddr_qstorage address;
int pf;
unsigned long _true = true;
int i;
int maxport = port + 100;
if (localip && *localip)
{
if (!NET_StringToSockaddr(localip, port, &address, &pf, &adrsize))
return INVALID_SOCKET;
}
else
{
adrsize = sizeof(struct sockaddr_in);
pf = ((struct sockaddr_in*)&address)->sin_family = AF_INET;
((struct sockaddr_in*)&address)->sin_port = htons(port);
//ZOID -- check for interface binding option
if ((i = COM_CheckParm("-ip")) != 0 && i < com_argc)
{
((struct sockaddr_in*)&address)->sin_addr.s_addr = inet_addr(com_argv[i+1]);
Con_TPrintf(TL_NETBINDINTERFACE,
inet_ntoa(address.sin_addr));
}
else
((struct sockaddr_in*)&address)->sin_addr.s_addr = INADDR_ANY;
}
if ((newsocket = socket (pf, SOCK_STREAM, IPPROTO_TCP)) == INVALID_SOCKET)
return INVALID_SOCKET;
if (ioctlsocket (newsocket, FIONBIO, &_true) == -1)
Sys_Error ("TCP_OpenListenSocket: ioctl FIONBIO: %s", strerror(qerrno));
for(;;)
{
if (port == PORT_ANY)
address.sin_port = 0;
else
address.sin_port = htons((short)port);
if( bind (newsocket, (void *)&address, sizeof(address)) == -1)
{
if (!port)
{
Con_Printf("Cannot bind tcp socket\n");
closesocket(newsocket);
return INVALID_SOCKET;
}
port++;
if (port > maxport)
{
Con_Printf("Cannot bind tcp socket\n");
closesocket(newsocket);
return INVALID_SOCKET;
}
}
else
break;
}
if (listen(newsocket, 1) == INVALID_SOCKET)
{
Con_Printf("Cannot listen on tcp socket\n");
closesocket(newsocket);
return INVALID_SOCKET;
}
return newsocket;
#endif
}
*/
#if defined(SV_MASTER) || defined(CL_MASTER)
int UDP_OpenSocket (int port, qboolean bcast)
{
SOCKET newsocket;
struct sockaddr_in address;
unsigned long _true = true;
int i;
int maxport = port + 100;
if ((newsocket = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP)) == INVALID_SOCKET)
return INVALID_SOCKET;
if (ioctlsocket (newsocket, FIONBIO, &_true) == -1)
Sys_Error ("UDP_OpenSocket: ioctl FIONBIO: %s", strerror(qerrno));
if (bcast)
{
_true = true;
if (setsockopt(newsocket, SOL_SOCKET, SO_BROADCAST, (char *)&_true, sizeof(_true)) == -1)
{
Con_Printf("Cannot create broadcast socket\n");
return INVALID_SOCKET;
}
}
address.sin_family = AF_INET;
//ZOID -- check for interface binding option
if ((i = COM_CheckParm("-ip")) != 0 && i < com_argc) {
address.sin_addr.s_addr = inet_addr(com_argv[i+1]);
Con_TPrintf(TL_NETBINDINTERFACE,
inet_ntoa(address.sin_addr));
} else
address.sin_addr.s_addr = INADDR_ANY;
for(;;)
{
if (port == PORT_ANY)
address.sin_port = 0;
else
address.sin_port = htons((short)port);
if( bind (newsocket, (void *)&address, sizeof(address)) == -1)
{
if (!port)
Sys_Error ("UDP_OpenSocket: bind: %s", strerror(qerrno));
port++;
if (port > maxport)
Sys_Error ("UDP_OpenSocket: bind: %s", strerror(qerrno));
}
else
break;
}
return newsocket;
}
#ifdef IPPROTO_IPV6
int UDP6_OpenSocket (int port, qboolean bcast)
{
int err;
SOCKET newsocket;
struct sockaddr_in6 address;
unsigned long _true = true;
// int i;
int maxport = port + 100;
memset(&address, 0, sizeof(address));
if ((newsocket = socket (PF_INET6, SOCK_DGRAM, 0)) == INVALID_SOCKET)
{
Con_Printf("IPV6 is not supported: %s\n", strerror(qerrno));
return INVALID_SOCKET;
}
if (ioctlsocket (newsocket, FIONBIO, &_true) == -1)
Sys_Error ("UDP_OpenSocket: ioctl FIONBIO: %s", strerror(qerrno));
if (bcast)
{
// address.sin6_addr
// _true = true;
// if (setsockopt(newsocket, SOL_SOCKET, IP_ADD_MEMBERSHIP, (char *)&_true, sizeof(_true)) == -1)
// {
Con_Printf("Cannot create broadcast socket\n");
closesocket(newsocket);
return INVALID_SOCKET;
// }
}
#ifdef IPV6_V6ONLY
setsockopt(newsocket, IPPROTO_IPV6, IPV6_V6ONLY, (char *)&_true, sizeof(_true));
#endif
address.sin6_family = AF_INET6;
//ZOID -- check for interface binding option
// if ((i = COM_CheckParm("-ip6")) != 0 && i < com_argc) {
// address.sin6_addr = inet_addr(com_argv[i+1]);
/// Con_TPrintf(TL_NETBINDINTERFACE,
// inet_ntoa(address.sin6_addr));
// } else
memset(&address.sin6_addr, 0, sizeof(struct in6_addr));
for(;;)
{
if (port == PORT_ANY)
address.sin6_port = 0;
else
address.sin6_port = htons((short)port);
if( bind (newsocket, (void *)&address, sizeof(address)) == -1)
{
if (!port)
{
err = qerrno;
Con_Printf ("UDP6_OpenSocket: bind: (%i) %s", err, strerror(err));
closesocket(newsocket);
return INVALID_SOCKET;
}
port++;
if (port > maxport)
{
err = qerrno;
Con_Printf ("UDP6_OpenSocket: bind: (%i) %s", err, strerror(err));
closesocket(newsocket);
return INVALID_SOCKET;
}
}
else
break;
}
return newsocket;
}
#endif
void UDP_CloseSocket (int socket)
{
closesocket(socket);
}
int IPX_OpenSocket (int port, qboolean bcast)
{
#ifndef USEIPX
return 0;
#else
SOCKET newsocket;
struct sockaddr_ipx address;
u_long _true = 1;
if ((newsocket = socket (PF_IPX, SOCK_DGRAM, NSPROTO_IPX)) == INVALID_SOCKET)
{
if (qerrno != EAFNOSUPPORT)
Con_Printf ("WARNING: IPX_Socket: socket: %i\n", qerrno);
return INVALID_SOCKET;
}
// make it non-blocking
if (ioctlsocket (newsocket, FIONBIO, &_true) == -1)
{
Con_Printf ("WARNING: IPX_Socket: ioctl FIONBIO: %i\n", qerrno);
return INVALID_SOCKET;
}
if (bcast)
{
// make it broadcast capable
if (setsockopt(newsocket, SOL_SOCKET, SO_BROADCAST, (char *)&_true, sizeof(_true)) == -1)
{
Con_Printf ("WARNING: IPX_Socket: setsockopt SO_BROADCAST: %i\n", qerrno);
return INVALID_SOCKET;
}
}
address.sa_family = AF_IPX;
memset (address.sa_netnum, 0, 4);
memset (address.sa_nodenum, 0, 6);
if (port == PORT_ANY)
address.sa_socket = 0;
else
address.sa_socket = htons((short)port);
if( bind (newsocket, (void *)&address, sizeof(address)) == -1)
{
Con_Printf ("WARNING: IPX_Socket: bind: %i\n", qerrno);
closesocket (newsocket);
return INVALID_SOCKET;
}
return newsocket;
#endif
}
void IPX_CloseSocket (int socket)
{
#ifdef USEIPX
closesocket(socket);
#endif
}
#endif
// sleeps msec or until net socket is ready
//stdin can sometimes be a socket. As a result,
//we give the option to select it for nice console imput with timeouts.
#ifndef CLIENTONLY
qboolean NET_Sleep(int msec, qboolean stdinissocket)
{
#ifdef HAVE_PACKET
struct timeval timeout;
fd_set fdset;
int maxfd;
int con, sock;
FD_ZERO(&fdset);
if (stdinissocket)
FD_SET(0, &fdset); //stdin tends to be socket 0
maxfd = 0;
if (svs.sockets)
for (con = 0; con < MAX_CONNECTIONS; con++)
{
if (!svs.sockets->conn[con])
continue;
if (svs.sockets->conn[con]->SetReceiveFDSet)
{
sock = svs.sockets->conn[con]->SetReceiveFDSet(svs.sockets->conn[con], &fdset);
if (sock > maxfd)
maxfd = sock;
}
else
{
sock = svs.sockets->conn[con]->thesocket;
if (sock != INVALID_SOCKET)
{
FD_SET(sock, &fdset); // network socket
if (sock > maxfd)
maxfd = sock;
}
}
}
timeout.tv_sec = msec/1000;
timeout.tv_usec = (msec%1000)*1000;
select(maxfd+1, &fdset, NULL, NULL, &timeout);
if (stdinissocket)
return FD_ISSET(0, &fdset);
#endif
return true;
}
#endif
void NET_GetLocalAddress (int socket, netadr_t *out)
{
#ifndef HAVE_PACKET
out->type = NA_INVALID;
#else
char buff[512];
char adrbuf[MAX_ADR_SIZE];
struct sockaddr_qstorage address;
int namelen;
netadr_t adr = {0};
qboolean notvalid = false;
strcpy(buff, "localhost");
gethostname(buff, 512);
buff[512-1] = 0;
if (!NET_StringToAdr (buff, 0, &adr)) //urm
NET_StringToAdr ("127.0.0.1", 0, &adr);
namelen = sizeof(address);
if (getsockname (socket, (struct sockaddr *)&address, &namelen) == -1)
{
notvalid = true;
NET_StringToSockaddr("0.0.0.0", 0, (struct sockaddr_qstorage *)&address, NULL, NULL);
// Sys_Error ("NET_Init: getsockname:", strerror(qerrno));
}
SockadrToNetadr(&address, out);
if (out->type == NA_IP)
{
if (!*(int*)out->address.ip) //socket was set to auto
*(int *)out->address.ip = *(int *)adr.address.ip; //change it to what the machine says it is, rather than the socket.
}
if (notvalid)
Con_Printf("Couldn't detect local ip\n");
else
Con_TPrintf(TL_IPADDRESSIS, NET_AdrToString (adrbuf, sizeof(adrbuf), *out) );
#endif
}
#ifndef CLIENTONLY
void SVNET_AddPort_f(void)
{
char *s = Cmd_Argv(1);
char *conname = Cmd_Argv(2);
if (!*s && !*conname)
{
Con_Printf("Active Server ports:\n");
NET_PrintAddresses(svs.sockets);
Con_Printf("end of list\n");
return;
}
if (!*conname)
conname = NULL;
//just in case
if (!svs.sockets)
{
svs.sockets = FTENET_CreateCollection(true);
#ifndef SERVERONLY
FTENET_AddToCollection(svs.sockets, "SVLoopback", "27500", NA_LOOPBACK, true);
#endif
}
FTENET_AddToCollection(svs.sockets, conname, *s?s:NULL, *s?NA_IP:NA_INVALID, true);
}
typedef struct
{
unsigned short msgtype;
unsigned short msglen;
unsigned int magiccookie;
unsigned int transactid[3];
} stunhdr_t;
typedef struct
{
unsigned short attrtype;
unsigned short attrlen;
} stunattr_t;
static qboolean NET_WasStun(void)
{
if ((net_from.type == NA_IP || net_from.type == NA_IPV6) && net_message.cursize >= 20)
{
stunhdr_t *stun = (stunhdr_t*)net_message.data;
int stunlen = BigShort(stun->msglen);
if (stun->msgtype == BigShort(0x0101) && net_message.cursize == stunlen + sizeof(*stun))
{
stunattr_t *attr = (stunattr_t*)(stun+1);
int alen;
while(stunlen)
{
stunlen -= sizeof(*attr);
alen = BigShort(attr->attrlen);
if (alen > stunlen)
return false;
if (attr->attrtype == BigShort(1) && alen == 8 && ((qbyte*)attr)[5] == 1) //ipv4 MAPPED-ADDRESS
{
netadr_t adr;
char str[256];
adr.type = NA_IP;
adr.port = (((short*)attr)[3]);
memcpy(adr.address.ip, &((qbyte*)attr)[8], 4);
NET_AdrToString(str, sizeof(str), adr);
Con_Printf("Public address %s\n", str);
}
else if (attr->attrtype == BigShort(1) && alen == 20 && ((qbyte*)attr)[5] == 2) //ipv6 MAPPED-ADDRESS
{
netadr_t adr;
char str[256];
adr.type = NA_IPV6;
adr.port = (((short*)attr)[3]);
memcpy(adr.address.ip6, &((qbyte*)attr)[8], 16);
NET_AdrToString(str, sizeof(str), adr);
Con_Printf("Public address %s\n", str);
}
attr = (stunattr_t*)((char*)(attr+1) + alen);
}
return true;
}
}
return false;
}
void SVNET_Stun_f(void)
{
char *stunserver = Cmd_Argv(1);
netadr_t stunserverip;
struct {
stunhdr_t hdr;
} stunmsg;
//"stun.l.google.com:19302"
if (!NET_StringToAdr(stunserver, 3478, &stunserverip) || stunserverip.type != NA_IP)
{
Con_Printf("Specified stun server was not resolved or was not udp v4\n");
return;
}
stunmsg.hdr.magiccookie = BigLong(0x2112a442);
Sys_RandomBytes((qbyte*)&stunmsg.hdr.transactid[0], sizeof(stunmsg.hdr.transactid)); // 'and SHOULD be cryptographically random'
stunmsg.hdr.msgtype = BigShort(0x0001); //binding request
stunmsg.hdr.msglen = BigShort(0);
NET_SendPacket(NS_SERVER, sizeof(stunmsg), &stunmsg, stunserverip);
}
#endif
#ifndef SERVERONLY
void NET_ClientPort_f(void)
{
Con_Printf("Active Client ports:\n");
NET_PrintAddresses(cls.sockets);
Con_Printf("end of list\n");
}
#endif
qboolean NET_WasSpecialPacket(void)
{
#ifndef CLIENTONLY
if (NET_WasStun())
return true;
#endif
#ifdef HAVE_NATPMP
if (NET_Was_NATPMP(svs.sockets))
return true;
#endif
return false;
}
/*
====================
NET_Init
====================
*/
void NET_Init (void)
{
#ifdef _WIN32
int r;
#ifdef IPPROTO_IPV6
HMODULE ws2_32dll;
ws2_32dll = LoadLibrary("ws2_32.dll");
if (ws2_32dll)
{
pfreeaddrinfo = (void *)GetProcAddress(ws2_32dll, "freeaddrinfo");
pgetaddrinfo = (void *)GetProcAddress(ws2_32dll, "getaddrinfo");
if (!pgetaddrinfo || !pfreeaddrinfo)
{
pgetaddrinfo = NULL;
pfreeaddrinfo = NULL;
FreeLibrary(ws2_32dll);
}
}
else
pgetaddrinfo = NULL;
#endif
r = WSAStartup (MAKEWORD(1, 1), &winsockdata);
if (r)
Sys_Error ("Winsock initialization failed.");
#endif
Cvar_Register(&net_hybriddualstack, "networking");
Cvar_Register(&net_fakeloss, "networking");
#ifndef CLIENTONLY
Cmd_AddCommand("sv_addport", SVNET_AddPort_f);
Cmd_AddCommand("sv_stun", SVNET_Stun_f);
#endif
#ifndef SERVERONLY
Cmd_AddCommand("cl_addport", NET_ClientPort_f);
#endif
}
#ifndef SERVERONLY
void NET_InitClient(void)
{
const char *port;
int p;
port = STRINGIFY(PORT_QWCLIENT);
p = COM_CheckParm ("-clport");
if (p && p < com_argc)
{
port = com_argv[p+1];
}
cls.sockets = FTENET_CreateCollection(false);
#ifndef CLIENTONLY
FTENET_AddToCollection(cls.sockets, "CLLoopback", port, NA_LOOPBACK, true);
#endif
#ifdef HAVE_IPV4
FTENET_AddToCollection(cls.sockets, "CLUDP4", port, NA_IP, true);
#endif
#ifdef IPPROTO_IPV6
FTENET_AddToCollection(cls.sockets, "CLUDP6", port, NA_IPV6, true);
#endif
#ifdef USEIPX
FTENET_AddToCollection(cls.sockets, "CLIPX", port, NA_IPX, true);
#endif
//
// init the message buffer
//
net_message.maxsize = sizeof(net_message_buffer);
net_message.data = net_message_buffer;
Con_TPrintf(TL_CLIENTPORTINITED);
}
#endif
#ifndef CLIENTONLY
#ifdef HAVE_IPV4
void SV_Tcpport_Callback(struct cvar_s *var, char *oldvalue)
{
FTENET_AddToCollection(svs.sockets, var->name, var->string, NA_TCP, true);
}
cvar_t sv_port_tcp = CVARC("sv_port_tcp", "", SV_Tcpport_Callback);
#endif
#ifdef IPPROTO_IPV6
void SV_Tcpport6_Callback(struct cvar_s *var, char *oldvalue)
{
FTENET_AddToCollection(svs.sockets, var->name, var->string, NA_TCPV6, true);
}
cvar_t sv_port_tcp6 = CVARC("sv_port_tcp6", "", SV_Tcpport6_Callback);
#endif
#ifdef HAVE_IPV4
void SV_Port_Callback(struct cvar_s *var, char *oldvalue)
{
FTENET_AddToCollection(svs.sockets, var->name, var->string, NA_IP, true);
}
cvar_t sv_port_ipv4 = CVARC("sv_port", "27500", SV_Port_Callback);
#endif
#ifdef IPPROTO_IPV6
void SV_PortIPv6_Callback(struct cvar_s *var, char *oldvalue)
{
FTENET_AddToCollection(svs.sockets, var->name, var->string, NA_IPV6, true);
}
cvar_t sv_port_ipv6 = CVARC("sv_port_ipv6", "", SV_PortIPv6_Callback);
#endif
#ifdef USEIPX
void SV_PortIPX_Callback(struct cvar_s *var, char *oldvalue)
{
FTENET_AddToCollection(svs.sockets, var->name, var->string, NA_IPX, true);
}
cvar_t sv_port_ipx = CVARC("sv_port_ipx", "", SV_PortIPX_Callback);
#endif
#ifdef HAVE_NATPMP
void SV_Port_NatPMP_Callback(struct cvar_s *var, char *oldvalue)
{
FTENET_AddToCollection(svs.sockets, var->name, va("natpmp://%s", var->string), NA_NATPMP, true);
}
#ifdef SERVERONLY
#define NATPMP_DEFAULT_PORT "" //don't fuck with dedicated servers
#else
#define NATPMP_DEFAULT_PORT "5351" //home users, yay, lucky people.
#endif
cvar_t sv_port_natpmp = CVARCD("sv_port_natpmp", NATPMP_DEFAULT_PORT, SV_Port_NatPMP_Callback, "If set (typically to 5351), automatically configures your router's port forwarding. You can instead specify the full ip address of your router (192.168.1.1:5351 for example). Your router must have NAT-PMP supported and enabled.");
#endif
void SVNET_RegisterCvars(void)
{
int p;
#if defined(TCPCONNECT) && defined(HAVE_IPV4)
Cvar_Register (&sv_port_tcp, "networking");
sv_port_tcp.restriction = RESTRICT_MAX;
#endif
#if defined(TCPCONNECT) && defined(IPPROTO_IPV6)
Cvar_Register (&sv_port_tcp6, "networking");
sv_port_tcp6.restriction = RESTRICT_MAX;
#endif
#ifdef IPPROTO_IPV6
Cvar_Register (&sv_port_ipv6, "networking");
sv_port_ipv6.restriction = RESTRICT_MAX;
#endif
#ifdef USEIPX
Cvar_Register (&sv_port_ipx, "networking");
sv_port_ipx.restriction = RESTRICT_MAX;
#endif
#ifdef HAVE_IPV4
Cvar_Register (&sv_port_ipv4, "networking");
sv_port_ipv4.restriction = RESTRICT_MAX;
#endif
#ifdef HAVE_NATPMP
Cvar_Register (&sv_port_natpmp, "networking");
sv_port_natpmp.restriction = RESTRICT_MAX;
#endif
// parse params for cvars
p = COM_CheckParm ("-port");
if (!p)
p = COM_CheckParm ("-svport");
if (p && p < com_argc)
{
extern cvar_t sv_port_ipv4, sv_port_ipv6, sv_port_ipx;
int port = atoi(com_argv[p+1]);
if (!port)
port = PORT_QWSERVER;
#ifdef HAVE_IPV4
if (*sv_port_ipv4.string)
Cvar_SetValue(&sv_port_ipv4, port);
#endif
#ifdef IPPROTO_IPV6
if (*sv_port_ipv6.string)
Cvar_SetValue(&sv_port_ipv6, port);
#endif
#ifdef USEIPX
if (*sv_port_ipx.string)
Cvar_SetValue(&sv_port_ipx, port);
#endif
}
}
void NET_CloseServer(void)
{
allowconnects = false;
FTENET_CloseCollection(svs.sockets);
svs.sockets = NULL;
}
void NET_InitServer(void)
{
char *port;
port = STRINGIFY(PORT_QWSERVER);
if (sv_listen_nq.value || sv_listen_dp.value || sv_listen_qw.value || sv_listen_q3.value)
{
if (!svs.sockets)
{
svs.sockets = FTENET_CreateCollection(true);
#ifndef SERVERONLY
FTENET_AddToCollection(svs.sockets, "SVLoopback", port, NA_LOOPBACK, true);
#endif
}
allowconnects = true;
#ifdef HAVE_IPV4
Cvar_ForceCallback(&sv_port_ipv4);
#endif
#ifdef IPPROTO_IPV6
Cvar_ForceCallback(&sv_port_ipv6);
#endif
#ifdef USEIPX
Cvar_ForceCallback(&sv_port_ipx);
#endif
#if defined(TCPCONNECT) && defined(HAVE_TCP)
Cvar_ForceCallback(&sv_port_tcp);
#ifdef IPPROTO_IPV6
Cvar_ForceCallback(&sv_port_tcp6);
#endif
#endif
#ifdef HAVE_NATPMP
Cvar_ForceCallback(&sv_port_natpmp);
#endif
}
else
{
NET_CloseServer();
#ifndef SERVERONLY
svs.sockets = FTENET_CreateCollection(true);
FTENET_AddToCollection(svs.sockets, "SVLoopback", port, NA_LOOPBACK, true);
#endif
}
//
// init the message buffer
//
net_message.maxsize = sizeof(net_message_buffer);
net_message.data = net_message_buffer;
}
#endif
/*
====================
NET_Shutdown
====================
*/
void NET_Shutdown (void)
{
#ifndef CLIENTONLY
NET_CloseServer();
#endif
#ifndef SERVERONLY
FTENET_CloseCollection(cls.sockets);
cls.sockets = NULL;
#endif
#ifdef _WIN32
#ifdef SERVERTONLY
if (!serverthreadID) //running as subsystem of client. Don't close all of it's sockets too.
#endif
WSACleanup ();
#endif
}
#ifdef HAVE_TCP
typedef struct {
vfsfile_t funcs;
int sock;
char readbuffer[65536];
int readbuffered;
} tcpfile_t;
void VFSTCP_Error(tcpfile_t *f)
{
if (f->sock != INVALID_SOCKET)
{
closesocket(f->sock);
f->sock = INVALID_SOCKET;
}
}
int VFSTCP_ReadBytes (struct vfsfile_s *file, void *buffer, int bytestoread)
{
tcpfile_t *tf = (tcpfile_t*)file;
int len;
int trying;
if (tf->sock != INVALID_SOCKET)
{
trying = sizeof(tf->readbuffer) - tf->readbuffered;
if (trying > 1500)
trying = 1500;
len = recv(tf->sock, tf->readbuffer + tf->readbuffered, trying, 0);
if (len == -1)
{
int e = qerrno;
if (e != EWOULDBLOCK)
{
switch(e)
{
case ECONNABORTED:
Sys_Printf("conenction aborted\n", e);
break;
default:
Sys_Printf("socket error %i\n", e);
}
VFSTCP_Error(tf);
}
//fixme: figure out wouldblock or error
}
else if (len == 0 && trying != 0)
{
//peer disconnected
VFSTCP_Error(tf);
}
else
{
tf->readbuffered += len;
}
}
//return a partially filled buffer.
if (bytestoread > tf->readbuffered)
bytestoread = tf->readbuffered;
if (bytestoread < 0)
VFSTCP_Error(tf);
if (bytestoread > 0)
{
memcpy(buffer, tf->readbuffer, bytestoread);
tf->readbuffered -= bytestoread;
memmove(tf->readbuffer, tf->readbuffer+bytestoread, tf->readbuffered);
return bytestoread;
}
else
{
if (tf->sock == INVALID_SOCKET)
return -1; //signal an error
return 0; //signal nothing available
}
}
int VFSTCP_WriteBytes (struct vfsfile_s *file, const void *buffer, int bytestoread)
{
tcpfile_t *tf = (tcpfile_t*)file;
int len;
if (tf->sock == INVALID_SOCKET)
return 0;
len = send(tf->sock, buffer, bytestoread, 0);
if (len == -1 || len == 0)
{
// don't destroy it on write errors, because that prevents us from reading anything that was sent to us afterwards.
// instead let the read handling kill it if there's nothing new to be read
VFSTCP_ReadBytes(file, NULL, 0);
return 0;
}
return len;
}
qboolean VFSTCP_Seek (struct vfsfile_s *file, unsigned long pos)
{
VFSTCP_Error((tcpfile_t*)file);
return false;
}
unsigned long VFSTCP_Tell (struct vfsfile_s *file)
{
VFSTCP_Error((tcpfile_t*)file);
return 0;
}
unsigned long VFSTCP_GetLen (struct vfsfile_s *file)
{
return 0;
}
void VFSTCP_Close (struct vfsfile_s *file)
{
VFSTCP_Error((tcpfile_t*)file);
Z_Free(file);
}
vfsfile_t *FS_OpenTCP(const char *name, int defaultport)
{
tcpfile_t *newf;
int sock;
netadr_t adr = {0};
if (NET_StringToAdr(name, defaultport, &adr))
{
sock = TCP_OpenStream(adr);
if (sock == INVALID_SOCKET)
return NULL;
newf = Z_Malloc(sizeof(*newf));
newf->sock = sock;
newf->funcs.Close = VFSTCP_Close;
newf->funcs.Flush = NULL;
newf->funcs.GetLen = VFSTCP_GetLen;
newf->funcs.ReadBytes = VFSTCP_ReadBytes;
newf->funcs.Seek = VFSTCP_Seek;
newf->funcs.Tell = VFSTCP_Tell;
newf->funcs.WriteBytes = VFSTCP_WriteBytes;
newf->funcs.seekingisabadplan = true;
return &newf->funcs;
}
else
return NULL;
}
#elif 0 //defined(HAVE_WEBSOCKCL)
This code is disabled.
I cannot provide a reliable mechanism over chrome/nacls websockets at this time.
Some module within the ppapi/nacl/chrome stack refuses to forward the data when stressed.
All I can determine is that the connection has a gap.
Hopefully this should be fixed by pepper_19.
As far as Im aware, this and the relevent code in QTV should be functionally complete.
typedef struct
{
vfsfile_t funcs;
PP_Resource sock;
unsigned char readbuffer[65536];
int readbuffered;
qboolean havepacket;
struct PP_Var incomingpacket;
qboolean failed;
} tcpfile_t;
static void tcp_websocketgot(void *user_data, int32_t result)
{
tcpfile_t *wsc = user_data;
if (result == PP_OK)
{
if (wsc->incomingpacket.type == PP_VARTYPE_UNDEFINED)
{
Con_Printf("ERROR: %s: var was not set by PPAPI. Data has been lost.\n", __func__);
wsc->failed = true;
}
wsc->havepacket = true;
}
else
{
Sys_Printf("%s: %i\n", __func__, result);
wsc->failed = true;
}
}
static void tcp_websocketconnected(void *user_data, int32_t result)
{
tcpfile_t *wsc = user_data;
if (result == PP_OK)
{
int res;
//we got a successful connection, enable reception.
struct PP_CompletionCallback ccb = {tcp_websocketgot, wsc, PP_COMPLETIONCALLBACK_FLAG_NONE};
res = ppb_websocket_interface->ReceiveMessage(wsc->sock, &wsc->incomingpacket, ccb);
if (res != PP_OK_COMPLETIONPENDING)
tcp_websocketgot(wsc, res);
}
else
{
Sys_Printf("%s: %i\n", __func__, result);
//some sort of error connecting, make it timeout now
wsc->failed = true;
}
}
static void tcp_websocketclosed(void *user_data, int32_t result)
{
tcpfile_t *wsc = user_data;
wsc->failed = true;
if (wsc->havepacket)
{
wsc->havepacket = false;
ppb_var_interface->Release(wsc->incomingpacket);
}
ppb_core->ReleaseResource(wsc->sock);
wsc->sock = 0;
// Z_Free(wsc);
}
void VFSTCP_Close (struct vfsfile_s *file)
{
/*meant to free the memory too, in this case we get the callback to do it*/
tcpfile_t *wsc = (void*)file;
struct PP_CompletionCallback ccb = {tcp_websocketclosed, wsc, PP_COMPLETIONCALLBACK_FLAG_NONE};
ppb_websocket_interface->Close(wsc->sock, PP_WEBSOCKETSTATUSCODE_NORMAL_CLOSURE, PP_MakeUndefined(), ccb);
}
int VFSTCP_ReadBytes (struct vfsfile_s *file, void *buffer, int bytestoread)
{
tcpfile_t *wsc = (void*)file;
int res;
if (wsc->havepacket && wsc->readbuffered < bytestoread + 1024)
{
if (wsc->incomingpacket.type == PP_VARTYPE_UNDEFINED)
Con_Printf("PPAPI bug: var is still undefined after being received\n");
else
{
int len = 0;
unsigned char *utf8 = (unsigned char *)ppb_var_interface->VarToUtf8(wsc->incomingpacket, &len);
unsigned char *out = (unsigned char *)wsc->readbuffer + wsc->readbuffered;
wsc->havepacket = false;
Con_Printf("Len: %i\n", len);
while(len && out < wsc->readbuffer + sizeof(wsc->readbuffer))
{
if ((*utf8 & 0xe0)==0xc0 && len > 1)
{
*out = ((utf8[0] & 0x1f)<<6) | ((utf8[1] & 0x3f)<<0);
utf8+=2;
len -= 2;
}
else if (*utf8 & 0x80)
{
*out = '?';
utf8++;
len -= 1;
}
else
{
*out = utf8[0];
utf8++;
len -= 1;
}
out++;
}
if (len)
{
Con_Printf("oh noes! buffer not big enough!\n");
wsc->failed = true;
}
Con_Printf("Old: %i\n", wsc->readbuffered);
wsc->readbuffered = out - wsc->readbuffer;
Con_Printf("New: %i\n", wsc->readbuffered);
ppb_var_interface->Release(wsc->incomingpacket);
wsc->incomingpacket = PP_MakeUndefined();
}
if (!wsc->failed)
{
//get the next one
struct PP_CompletionCallback ccb = {tcp_websocketgot, wsc, PP_COMPLETIONCALLBACK_FLAG_NONE};
res = ppb_websocket_interface->ReceiveMessage(wsc->sock, &wsc->incomingpacket, ccb);
if (res != PP_OK_COMPLETIONPENDING)
tcp_websocketgot(wsc, res);
}
}
if (wsc->readbuffered)
{
// Con_Printf("Reading %i bytes of %i\n", bytestoread, wsc->readbuffered);
if (bytestoread > wsc->readbuffered)
bytestoread = wsc->readbuffered;
memcpy(buffer, wsc->readbuffer, bytestoread);
memmove(wsc->readbuffer, wsc->readbuffer+bytestoread, wsc->readbuffered-bytestoread);
wsc->readbuffered -= bytestoread;
}
else if (wsc->failed)
bytestoread = -1; /*signal eof*/
else
bytestoread = 0;
return bytestoread;
}
int VFSTCP_WriteBytes (struct vfsfile_s *file, const void *buffer, int bytestowrite)
{
tcpfile_t *wsc = (void*)file;
int res;
int outchars = 0;
unsigned char outdata[bytestowrite*2+1];
unsigned char *out=outdata;
const unsigned char *in=buffer;
if (wsc->failed)
return 0;
for(res = 0; res < bytestowrite; res++)
{
/*FIXME: do we need this code?*/
if (!*in)
{
*out++ = 0xc0 | (0x100 >> 6);
*out++ = 0x80 | (0x100 & 0x3f);
}
else if (*in >= 0x80)
{
*out++ = 0xc0 | (*in >> 6);
*out++ = 0x80 | (*in & 0x3f);
}
else
*out++ = *in;
in++;
outchars++;
}
*out = 0;
struct PP_Var str = ppb_var_interface->VarFromUtf8(outdata, out - outdata);
res = ppb_websocket_interface->SendMessage(wsc->sock, str);
// Sys_Printf("FTENET_WebSocket_SendPacket: result %i\n", res);
ppb_var_interface->Release(str);
if (res == PP_OK)
return bytestowrite;
return 0;
}
qboolean VFSTCP_Seek (struct vfsfile_s *file, unsigned long pos)
{
//no seeking allowed
tcpfile_t *wsc = (void*)file;
Con_Printf("tcp seek?\n");
wsc->failed = true;
return false;
}
unsigned long VFSTCP_Tell (struct vfsfile_s *file)
{
//no telling allowed
tcpfile_t *wsc = (void*)file;
Con_Printf("tcp tell?\n");
wsc->failed = true;
return 0;
}
unsigned long VFSTCP_GetLen (struct vfsfile_s *file)
{
return 0;
}
/*nacl websockets implementation...*/
vfsfile_t *FS_OpenTCP(const char *name, int defaultport)
{
tcpfile_t *newf;
netadr_t adr;
if (!ppb_websocket_interface)
{
return NULL;
}
if (!NET_StringToAdr(name, defaultport, &adr))
return NULL; //couldn't resolve the name
newf = Z_Malloc(sizeof(*newf));
if (newf)
{
struct PP_CompletionCallback ccb = {tcp_websocketconnected, newf, PP_COMPLETIONCALLBACK_FLAG_NONE};
newf->sock = ppb_websocket_interface->Create(pp_instance);
struct PP_Var str = ppb_var_interface->VarFromUtf8(adr.address.websocketurl, strlen(adr.address.websocketurl));
ppb_websocket_interface->Connect(newf->sock, str, NULL, 0, ccb);
ppb_var_interface->Release(str);
newf->funcs.Close = VFSTCP_Close;
newf->funcs.Flush = NULL;
newf->funcs.GetLen = VFSTCP_GetLen;
newf->funcs.ReadBytes = VFSTCP_ReadBytes;
newf->funcs.Seek = VFSTCP_Seek;
newf->funcs.Tell = VFSTCP_Tell;
newf->funcs.WriteBytes = VFSTCP_WriteBytes;
newf->funcs.seekingisabadplan = true;
return &newf->funcs;
}
return NULL;
}
#else
vfsfile_t *FS_OpenTCP(const char *name, int defaultport)
{
return NULL;
}
#endif