/
net_ip.c
2092 lines (1797 loc) · 44.3 KB
/
net_ip.c
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/*
* Wolfenstein: Enemy Territory GPL Source Code
* Copyright (C) 1999-2010 id Software LLC, a ZeniMax Media company.
*
* ET: Legacy
* Copyright (C) 2012 Jan Simek <mail@etlegacy.com>
*
* This file is part of ET: Legacy - http://www.etlegacy.com
*
* ET: Legacy 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 3 of the License, or
* (at your option) any later version.
*
* ET: Legacy 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 ET: Legacy. If not, see <http://www.gnu.org/licenses/>.
*
* In addition, Wolfenstein: Enemy Territory GPL Source Code is also
* subject to certain additional terms. You should have received a copy
* of these additional terms immediately following the terms and conditions
* of the GNU General Public License which accompanied the source code.
* If not, please request a copy in writing from id Software at the address below.
*
* id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
*
* @file net_ip.c
*/
#include "q_shared.h"
#include "qcommon.h"
#ifdef _WIN32
# ifdef __MINGW32__
# define _WIN32_WINNT 0x0501
# include <ws2spi.h>
# endif
# include <winsock2.h>
# include <ws2tcpip.h>
typedef int socklen_t;
# ifdef ADDRESS_FAMILY
# define sa_family_t ADDRESS_FAMILY
# else
typedef unsigned short sa_family_t;
# endif
# define EAGAIN WSAEWOULDBLOCK
# define EADDRNOTAVAIL WSAEADDRNOTAVAIL
# define EAFNOSUPPORT WSAEAFNOSUPPORT
# define ECONNRESET WSAECONNRESET
# define socketError WSAGetLastError()
static WSADATA winsockdata;
static qboolean winsockInitialized = qfalse;
#elif defined __AROS__
#include <errno.h>
#include <netdb.h>
#include <netinet/in.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <proto/exec.h>
#include <proto/socket.h>
typedef unsigned short sa_family_t;
typedef int SOCKET;
#define INVALID_SOCKET -1
#define SOCKET_ERROR -1
#define ioctlsocket IoctlSocket
#define closesocket CloseSocket
#define socketError errno
#define sockaddr_storage sockaddr_in
struct Library *SocketBase;
#else
# if MAC_OS_X_VERSION_MIN_REQUIRED == 1020
// needed for socklen_t on OSX 10.2
# define _BSD_SOCKLEN_T_
# endif
# include <sys/socket.h>
# include <errno.h>
# include <netdb.h>
# include <netinet/in.h>
# include <arpa/inet.h>
# include <net/if.h>
# include <sys/ioctl.h>
# include <sys/types.h>
# include <sys/time.h>
# include <unistd.h>
# if !defined(__sun) && !defined(__sgi)
# include <ifaddrs.h>
# endif
# ifdef __sun
# include <sys/filio.h>
# endif
typedef int SOCKET;
# define INVALID_SOCKET -1
# define SOCKET_ERROR -1
# define closesocket close
# define ioctlsocket ioctl
# define socketError errno
#endif
static qboolean usingSocks = qfalse;
static int networkingEnabled = 0;
static cvar_t *net_enabled;
static cvar_t *net_socksEnabled;
static cvar_t *net_socksServer;
static cvar_t *net_socksPort;
static cvar_t *net_socksUsername;
static cvar_t *net_socksPassword;
static cvar_t *net_ip;
static cvar_t *net_ip6;
static cvar_t *net_port;
static cvar_t *net_port6;
static cvar_t *net_mcast6addr;
static cvar_t *net_mcast6iface;
static struct sockaddr socksRelayAddr;
static SOCKET ip_socket = INVALID_SOCKET;
static SOCKET socks_socket = INVALID_SOCKET;
#ifdef FEATURE_IPV6
static SOCKET ip6_socket = INVALID_SOCKET;
static SOCKET multicast6_socket = INVALID_SOCKET;
// Keep track of currently joined multicast group.
static struct ipv6_mreq curgroup;
// And the currently bound address.
static struct sockaddr_in6 boundto;
#endif
#ifndef IF_NAMESIZE
#define IF_NAMESIZE 16
#endif
// use an admin local address per default so that network admins can decide on how to handle quake3 traffic.
#define NET_MULTICAST_IP6 "ff04::696f:7175:616b:6533"
#define MAX_IPS 32
typedef struct
{
char ifname[IF_NAMESIZE];
netadrtype_t type;
sa_family_t family;
struct sockaddr_storage addr;
struct sockaddr_storage netmask;
} nip_localaddr_t;
static nip_localaddr_t localIP[MAX_IPS];
static int numIP;
//=============================================================================
/*
====================
NET_ErrorString
====================
*/
char *NET_ErrorString(void)
{
#ifdef _WIN32
//FIXME: replace with FormatMessage?
switch (socketError)
{
case WSAEINTR: return "WSAEINTR";
case WSAEBADF: return "WSAEBADF";
case WSAEACCES: return "WSAEACCES";
case WSAEDISCON: return "WSAEDISCON";
case WSAEFAULT: return "WSAEFAULT";
case WSAEINVAL: return "WSAEINVAL";
case WSAEMFILE: return "WSAEMFILE";
case WSAEWOULDBLOCK: return "WSAEWOULDBLOCK";
case WSAEINPROGRESS: return "WSAEINPROGRESS";
case WSAEALREADY: return "WSAEALREADY";
case WSAENOTSOCK: return "WSAENOTSOCK";
case WSAEDESTADDRREQ: return "WSAEDESTADDRREQ";
case WSAEMSGSIZE: return "WSAEMSGSIZE";
case WSAEPROTOTYPE: return "WSAEPROTOTYPE";
case WSAENOPROTOOPT: return "WSAENOPROTOOPT";
case WSAEPROTONOSUPPORT: return "WSAEPROTONOSUPPORT";
case WSAESOCKTNOSUPPORT: return "WSAESOCKTNOSUPPORT";
case WSAEOPNOTSUPP: return "WSAEOPNOTSUPP";
case WSAEPFNOSUPPORT: return "WSAEPFNOSUPPORT";
case WSAEAFNOSUPPORT: return "WSAEAFNOSUPPORT";
case WSAEADDRINUSE: return "WSAEADDRINUSE";
case WSAEADDRNOTAVAIL: return "WSAEADDRNOTAVAIL";
case WSAENETDOWN: return "WSAENETDOWN";
case WSAENETUNREACH: return "WSAENETUNREACH";
case WSAENETRESET: return "WSAENETRESET";
case WSAECONNABORTED: return "WSWSAECONNABORTEDAEINTR";
case WSAECONNRESET: return "WSAECONNRESET";
case WSAENOBUFS: return "WSAENOBUFS";
case WSAEISCONN: return "WSAEISCONN";
case WSAENOTCONN: return "WSAENOTCONN";
case WSAESHUTDOWN: return "WSAESHUTDOWN";
case WSAETOOMANYREFS: return "WSAETOOMANYREFS";
case WSAETIMEDOUT: return "WSAETIMEDOUT";
case WSAECONNREFUSED: return "WSAECONNREFUSED";
case WSAELOOP: return "WSAELOOP";
case WSAENAMETOOLONG: return "WSAENAMETOOLONG";
case WSAEHOSTDOWN: return "WSAEHOSTDOWN";
case WSASYSNOTREADY: return "WSASYSNOTREADY";
case WSAVERNOTSUPPORTED: return "WSAVERNOTSUPPORTED";
case WSANOTINITIALISED: return "WSANOTINITIALISED";
case WSAHOST_NOT_FOUND: return "WSAHOST_NOT_FOUND";
case WSATRY_AGAIN: return "WSATRY_AGAIN";
case WSANO_RECOVERY: return "WSANO_RECOVERY";
case WSANO_DATA: return "WSANO_DATA";
default: return "NO ERROR";
}
#else
return strerror(errno);
#endif
}
static void NetadrToSockadr(netadr_t *a, struct sockaddr *s)
{
switch (a->type)
{
case NA_BROADCAST:
((struct sockaddr_in *)s)->sin_family = AF_INET;
((struct sockaddr_in *)s)->sin_port = a->port;
((struct sockaddr_in *)s)->sin_addr.s_addr = INADDR_BROADCAST;
break;
case NA_IP:
((struct sockaddr_in *)s)->sin_family = AF_INET;
((struct sockaddr_in *)s)->sin_addr.s_addr = *(int *)&a->ip;
((struct sockaddr_in *)s)->sin_port = a->port;
break;
#ifdef FEATURE_IPV6
case NA_IP6:
((struct sockaddr_in6 *)s)->sin6_family = AF_INET6;
((struct sockaddr_in6 *)s)->sin6_addr = *((struct in6_addr *) &a->ip6);
((struct sockaddr_in6 *)s)->sin6_port = a->port;
((struct sockaddr_in6 *)s)->sin6_scope_id = a->scope_id;
break;
case NA_MULTICAST6:
((struct sockaddr_in6 *)s)->sin6_family = AF_INET6;
((struct sockaddr_in6 *)s)->sin6_addr = curgroup.ipv6mr_multiaddr;
((struct sockaddr_in6 *)s)->sin6_port = a->port;
break;
#endif
default:
Com_Printf("NetadrToSockadr: bad address type\n");
break;
}
}
static void SockadrToNetadr(struct sockaddr *s, netadr_t *a)
{
if (s->sa_family == AF_INET)
{
a->type = NA_IP;
*(int *)&a->ip = ((struct sockaddr_in *)s)->sin_addr.s_addr;
a->port = ((struct sockaddr_in *)s)->sin_port;
}
#ifdef FEATURE_IPV6
else if (s->sa_family == AF_INET6)
{
a->type = NA_IP6;
memcpy(a->ip6, &((struct sockaddr_in6 *)s)->sin6_addr, sizeof(a->ip6));
a->port = ((struct sockaddr_in6 *)s)->sin6_port;
a->scope_id = ((struct sockaddr_in6 *)s)->sin6_scope_id;
}
#endif
}
#ifdef FEATURE_IPV6
static struct addrinfo *SearchAddrInfo(struct addrinfo *hints, sa_family_t family)
{
while (hints)
{
if (hints->ai_family == family)
{
return hints;
}
hints = hints->ai_next;
}
return NULL;
}
#endif
/*
=============
Sys_StringToSockaddr
=============
*/
static qboolean Sys_StringToSockaddr(const char *s, struct sockaddr *sadr, int sadr_len, sa_family_t family)
{
#ifdef FEATURE_IPV6
struct addrinfo hints;
struct addrinfo *res = NULL;
struct addrinfo *search = NULL;
struct addrinfo *hintsp;
int retval;
memset(sadr, '\0', sizeof(*sadr));
memset(&hints, '\0', sizeof(hints));
hintsp = &hints;
hintsp->ai_family = family;
hintsp->ai_socktype = SOCK_DGRAM;
retval = getaddrinfo(s, NULL, hintsp, &res);
if (!retval)
{
if (family == AF_UNSPEC)
{
// Decide here and now which protocol family to use
if (net_enabled->integer & NET_PRIOV6)
{
if (net_enabled->integer & NET_ENABLEV6)
{
search = SearchAddrInfo(res, AF_INET6);
}
if (!search && (net_enabled->integer & NET_ENABLEV4))
{
search = SearchAddrInfo(res, AF_INET);
}
}
else
{
if (net_enabled->integer & NET_ENABLEV4)
{
search = SearchAddrInfo(res, AF_INET);
}
if (!search && (net_enabled->integer & NET_ENABLEV6))
{
search = SearchAddrInfo(res, AF_INET6);
}
}
}
else
{
search = SearchAddrInfo(res, family);
}
if (search)
{
if (res->ai_addrlen > sadr_len)
{
res->ai_addrlen = sadr_len;
}
memcpy(sadr, res->ai_addr, res->ai_addrlen);
freeaddrinfo(res);
return qtrue;
}
else
{
Com_Printf("Sys_StringToSockaddr: Error resolving %s: No address of required type found.\n", s);
}
}
else
{
Com_Printf("Sys_StringToSockaddr: Error resolving %s: %s\n", s, gai_strerror(retval));
}
if (res)
{
freeaddrinfo(res);
}
return qfalse;
#else
struct hostent *h;
memset(sadr, 0, sizeof(*sadr));
((struct sockaddr_in *)sadr)->sin_family = AF_INET;
((struct sockaddr_in *)sadr)->sin_port = 0;
if (s[0] >= '0' && s[0] <= '9')
{
*(int *)&((struct sockaddr_in *)sadr)->sin_addr = inet_addr(s);
}
else
{
if (!(h = gethostbyname(s)))
{
return qfalse;
}
*(int *)&((struct sockaddr_in *)sadr)->sin_addr = *(int *)h->h_addr_list[0];
}
return qtrue;
#endif
}
/*
=============
Sys_SockaddrToString
=============
*/
static void Sys_SockaddrToString(char *dest, int destlen, struct sockaddr *input)
{
#ifdef FEATURE_IPV6
socklen_t inputlen;
if (input->sa_family == AF_INET6)
{
inputlen = sizeof(struct sockaddr_in6);
}
else
{
inputlen = sizeof(struct sockaddr_in);
}
if (getnameinfo(input, inputlen, dest, destlen, NULL, 0, NI_NUMERICHOST) && destlen > 0)
{
*dest = '\0';
}
#else
char *addr = inet_ntoa(((struct sockaddr_in *)input)->sin_addr);
Q_strncpyz(dest, addr, destlen);
#endif
}
/*
=============
Sys_StringToAdr
=============
*/
qboolean Sys_StringToAdr(const char *s, netadr_t *a, netadrtype_t family)
{
struct sockaddr_storage sadr;
sa_family_t fam;
switch (family)
{
case NA_IP:
fam = AF_INET;
break;
#ifdef FEATURE_IPV6
case NA_IP6:
fam = AF_INET6;
break;
#endif
default:
fam = AF_UNSPEC;
break;
}
if (!Sys_StringToSockaddr(s, (struct sockaddr *) &sadr, sizeof(sadr), fam))
{
return qfalse;
}
SockadrToNetadr((struct sockaddr *) &sadr, a);
return qtrue;
}
/*
===================
NET_CompareBaseAdrMask
Compare without port, and up to the bit number given in netmask.
===================
*/
qboolean NET_CompareBaseAdrMask(netadr_t a, netadr_t b, int netmask)
{
qboolean differed;
byte cmpmask, *addra, *addrb;
int curbyte;
if (a.type != b.type)
{
return qfalse;
}
if (a.type == NA_LOOPBACK)
{
return qtrue;
}
if (a.type == NA_IP)
{
addra = (byte *) &a.ip;
addrb = (byte *) &b.ip;
if (netmask < 0 || netmask > 32)
{
netmask = 32;
}
}
#ifdef FEATURE_IPV6
else if (a.type == NA_IP6)
{
addra = (byte *) &a.ip6;
addrb = (byte *) &b.ip6;
if (netmask < 0 || netmask > 128)
{
netmask = 128;
}
}
#endif
else
{
Com_Printf("NET_CompareBaseAdr: bad address type\n");
return qfalse;
}
differed = qfalse;
curbyte = 0;
while (netmask > 7)
{
if (addra[curbyte] != addrb[curbyte])
{
differed = qtrue;
break;
}
curbyte++;
netmask -= 8;
}
if (differed)
{
return qfalse;
}
if (netmask)
{
cmpmask = (1 << netmask) - 1;
cmpmask <<= 8 - netmask;
if ((addra[curbyte] & cmpmask) == (addrb[curbyte] & cmpmask))
{
return qtrue;
}
}
else
{
return qtrue;
}
return qfalse;
}
/**
* @brief Compares ip addresses without the port.
*/
qboolean NET_CompareBaseAdr(netadr_t a, netadr_t b)
{
return NET_CompareBaseAdrMask(a, b, -1);
}
const char *NET_AdrToString(netadr_t a)
{
static char s[NET_ADDRSTRMAXLEN];
if (a.type == NA_LOOPBACK)
{
Com_sprintf(s, sizeof(s), "loopback");
}
else if (a.type == NA_BOT)
{
Com_sprintf(s, sizeof(s), "bot");
}
else if (a.type == NA_IP)
{
// Port has to be returned along with ip address because of compatibility
Com_sprintf(s, sizeof(s), "%i.%i.%i.%i:%hu",
a.ip[0], a.ip[1], a.ip[2], a.ip[3], BigShort(a.port));
}
#ifdef FEATURE_IPV6
else if (a.type == NA_IP6)
{
// FIXME: add port for compatibility
// (joining a server through the server browser)
struct sockaddr_storage sadr;
memset(&sadr, 0, sizeof(sadr));
NetadrToSockadr(&a, (struct sockaddr *) &sadr);
Sys_SockaddrToString(s, sizeof(s), (struct sockaddr *) &sadr);
}
#endif
return s;
}
/**
* @warning Function is broken, because NET_AdrToString already adds port to IPv4 addresses.
* @deprecated Use NET_AdrToString for compatibility with W:ET 2.60b.
*/
const char *NET_AdrToStringwPort(netadr_t a)
{
static char s[NET_ADDRSTRMAXLEN];
if (a.type == NA_LOOPBACK)
{
Com_sprintf(s, sizeof(s), "loopback");
}
else if (a.type == NA_BOT)
{
Com_sprintf(s, sizeof(s), "bot");
}
else if (a.type == NA_IP)
{
Com_sprintf(s, sizeof(s), "%s:%hu", NET_AdrToString(a), ntohs(a.port));
}
#ifdef FEATURE_IPV6
else if (a.type == NA_IP6)
{
Com_sprintf(s, sizeof(s), "[%s]:%hu", NET_AdrToString(a), ntohs(a.port));
}
#endif
return s;
}
qboolean NET_CompareAdr(netadr_t a, netadr_t b)
{
if (!NET_CompareBaseAdr(a, b))
{
return qfalse;
}
if (a.type == NA_IP || a.type == NA_IP6)
{
if (a.port == b.port)
{
return qtrue;
}
}
else
{
return qtrue;
}
return qfalse;
}
qboolean NET_IsLocalAddress(netadr_t adr)
{
return adr.type == NA_LOOPBACK;
}
//=============================================================================
/*
==================
Sys_GetPacket
Never called by the game logic, just the system event queing
==================
*/
#ifdef _DEBUG
int recvfromCount;
#endif
qboolean Sys_GetPacket(netadr_t *net_from, msg_t *net_message)
{
int ret;
struct sockaddr_storage from;
socklen_t fromlen;
int err;
#ifdef _DEBUG
recvfromCount++; // performance check
#endif
if (ip_socket != INVALID_SOCKET)
{
fromlen = sizeof(from);
ret = recvfrom(ip_socket, (void *)net_message->data, net_message->maxsize, 0, (struct sockaddr *) &from, &fromlen);
if (ret == SOCKET_ERROR)
{
err = socketError;
if (err != EAGAIN && err != ECONNRESET)
{
Com_Printf("NET_GetPacket: %s\n", NET_ErrorString());
}
}
else
{
memset(((struct sockaddr_in *)&from)->sin_zero, 0, 8);
if (usingSocks && memcmp(&from, &socksRelayAddr, fromlen) == 0)
{
if (ret < 10 || net_message->data[0] != 0 || net_message->data[1] != 0 || net_message->data[2] != 0 || net_message->data[3] != 1)
{
return qfalse;
}
net_from->type = NA_IP;
net_from->ip[0] = net_message->data[4];
net_from->ip[1] = net_message->data[5];
net_from->ip[2] = net_message->data[6];
net_from->ip[3] = net_message->data[7];
net_from->port = *(short *)&net_message->data[8];
net_message->readcount = 10;
}
else
{
SockadrToNetadr((struct sockaddr *) &from, net_from);
net_message->readcount = 0;
}
if (ret == net_message->maxsize)
{
Com_Printf("Oversize packet from %s\n", NET_AdrToString(*net_from));
return qfalse;
}
net_message->cursize = ret;
return qtrue;
}
}
#ifdef FEATURE_IPV6
if (ip6_socket != INVALID_SOCKET)
{
fromlen = sizeof(from);
ret = recvfrom(ip6_socket, (void *)net_message->data, net_message->maxsize, 0, (struct sockaddr *) &from, &fromlen);
if (ret == SOCKET_ERROR)
{
err = socketError;
if (err != EAGAIN && err != ECONNRESET)
{
Com_Printf("NET_GetPacket: %s\n", NET_ErrorString());
}
}
else
{
SockadrToNetadr((struct sockaddr *) &from, net_from);
net_message->readcount = 0;
if (ret == net_message->maxsize)
{
Com_Printf("Oversize packet from %s\n", NET_AdrToString(*net_from));
return qfalse;
}
net_message->cursize = ret;
return qtrue;
}
}
if (multicast6_socket != INVALID_SOCKET && multicast6_socket != ip6_socket)
{
fromlen = sizeof(from);
ret = recvfrom(multicast6_socket, (void *)net_message->data, net_message->maxsize, 0, (struct sockaddr *) &from, &fromlen);
if (ret == SOCKET_ERROR)
{
err = socketError;
if (err != EAGAIN && err != ECONNRESET)
{
Com_Printf("NET_GetPacket: %s\n", NET_ErrorString());
}
}
else
{
SockadrToNetadr((struct sockaddr *) &from, net_from);
net_message->readcount = 0;
if (ret == net_message->maxsize)
{
Com_Printf("Oversize packet from %s\n", NET_AdrToString(*net_from));
return qfalse;
}
net_message->cursize = ret;
return qtrue;
}
}
#endif
return qfalse;
}
//=============================================================================
static char socksBuf[4096];
/*
==================
Sys_SendPacket
==================
*/
void Sys_SendPacket(int length, const void *data, netadr_t to)
{
int ret = SOCKET_ERROR;
struct sockaddr_storage addr;
if (to.type != NA_BROADCAST && to.type != NA_IP && to.type != NA_IP6 && to.type != NA_MULTICAST6)
{
Com_Error(ERR_FATAL, "Sys_SendPacket: bad address type\n");
return;
}
if ((ip_socket == INVALID_SOCKET && to.type == NA_IP) ||
(ip_socket == INVALID_SOCKET && to.type == NA_BROADCAST))
{
return;
}
#ifdef FEATURE_IPV6
if ((ip6_socket == INVALID_SOCKET && to.type == NA_IP6) ||
(ip6_socket == INVALID_SOCKET && to.type == NA_MULTICAST6))
{
return;
}
#endif
if (to.type == NA_MULTICAST6 && (net_enabled->integer & NET_DISABLEMCAST))
{
return;
}
memset(&addr, 0, sizeof(addr));
NetadrToSockadr(&to, (struct sockaddr *) &addr);
if (usingSocks && to.type == NA_IP)
{
socksBuf[0] = 0; // reserved
socksBuf[1] = 0;
socksBuf[2] = 0; // fragment (not fragmented)
socksBuf[3] = 1; // address type: IPV4
*(int *)&socksBuf[4] = ((struct sockaddr_in *)&addr)->sin_addr.s_addr;
*(short *)&socksBuf[8] = ((struct sockaddr_in *)&addr)->sin_port;
memcpy(&socksBuf[10], data, length);
ret = sendto(ip_socket, socksBuf, length + 10, 0, &socksRelayAddr, sizeof(socksRelayAddr));
}
else
{
#ifndef __AROS__
if (addr.ss_family == AF_INET)
#endif
{
ret = sendto(ip_socket, data, length, 0, (struct sockaddr *) &addr, sizeof(struct sockaddr_in));
}
#ifdef FEATURE_IPV6
else if (addr.ss_family == AF_INET6)
{
ret = sendto(ip6_socket, data, length, 0, (struct sockaddr *) &addr, sizeof(struct sockaddr_in6));
}
#endif
}
if (ret == SOCKET_ERROR)
{
int err = socketError;
// wouldblock is silent
if (err == EAGAIN)
{
return;
}
// some PPP links do not allow broadcasts and return an error
if ((err == EADDRNOTAVAIL) && ((to.type == NA_BROADCAST)))
{
return;
}
Com_Printf("Sys_SendPacket: %s\n", NET_ErrorString());
}
}
//=============================================================================
/*
==================
Sys_IsLANAddress
LAN clients will have their rate var ignored
==================
*/
qboolean Sys_IsLANAddress(netadr_t adr)
{
int index, run, addrsize;
qboolean differed;
byte *compareadr, *comparemask, *compareip;
if (adr.type == NA_LOOPBACK)
{
return qtrue;
}
if (adr.type == NA_IP)
{
// RFC1918:
// 10.0.0.0 - 10.255.255.255 (10/8 prefix)
// 172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
// 192.168.0.0 - 192.168.255.255 (192.168/16 prefix)
if (adr.ip[0] == 10)
{
return qtrue;
}
if (adr.ip[0] == 172 && (adr.ip[1] & 0xf0) == 16)
{
return qtrue;
}
if (adr.ip[0] == 192 && adr.ip[1] == 168)
{
return qtrue;
}
if (adr.ip[0] == 127)
{
return qtrue;
}
}
#ifdef FEATURE_IPV6
else if (adr.type == NA_IP6)
{
if (adr.ip6[0] == 0xfe && (adr.ip6[1] & 0xc0) == 0x80)
{
return qtrue;
}
if ((adr.ip6[0] & 0xfe) == 0xfc)
{
return qtrue;
}
}
#endif
// Now compare against the networks this computer is member of.
for (index = 0; index < numIP; index++)
{
if (localIP[index].type == adr.type)
{
if (adr.type == NA_IP)
{
compareip = (byte *) &((struct sockaddr_in *) &localIP[index].addr)->sin_addr.s_addr;
comparemask = (byte *) &((struct sockaddr_in *) &localIP[index].netmask)->sin_addr.s_addr;
compareadr = adr.ip;
addrsize = sizeof(adr.ip);
}
#ifdef FEATURE_IPV6
else
{
// TODO? should we check the scope_id here?
compareip = (byte *) &((struct sockaddr_in6 *) &localIP[index].addr)->sin6_addr;
comparemask = (byte *) &((struct sockaddr_in6 *) &localIP[index].netmask)->sin6_addr;
compareadr = adr.ip6;
addrsize = sizeof(adr.ip6);
}
#endif
differed = qfalse;
for (run = 0; run < addrsize; run++)
{
if ((compareip[run] & comparemask[run]) != (compareadr[run] & comparemask[run]))
{
differed = qtrue;
break;
}
}
if (!differed)
{
return qtrue;
}
}
}