From f4c60f773c1bae0e356090e812d9a619c1cfda85 Mon Sep 17 00:00:00 2001 From: thilo Date: Fri, 4 Apr 2008 23:22:22 +0000 Subject: Basic IPv6 support. Some inspiration from the patches by Lubos Dolezel and JF Tremblay at https://bugzilla.icculus.org/show_bug.cgi?id=2355. git-svn-id: svn://svn.icculus.org/quake3/trunk@1290 edf5b092-35ff-0310-97b2-ce42778d08ea --- code/qcommon/net_chan.c | 112 ++--- code/qcommon/net_ip.c | 1031 +++++++++++++++++++++++++++++++++-------------- code/qcommon/qcommon.h | 11 +- 3 files changed, 770 insertions(+), 384 deletions(-) (limited to 'code/qcommon') diff --git a/code/qcommon/net_chan.c b/code/qcommon/net_chan.c index 6458444..ac7b30b 100644 --- a/code/qcommon/net_chan.c +++ b/code/qcommon/net_chan.c @@ -460,74 +460,6 @@ qboolean Netchan_Process( netchan_t *chan, msg_t *msg ) { //============================================================================== -/* -=================== -NET_CompareBaseAdr - -Compares without the port -=================== -*/ -qboolean NET_CompareBaseAdr (netadr_t a, netadr_t b) -{ - if (a.type != b.type) - return qfalse; - - if (a.type == NA_LOOPBACK) - return qtrue; - - if (a.type == NA_IP) - { - if (a.ip[0] == b.ip[0] && a.ip[1] == b.ip[1] && a.ip[2] == b.ip[2] && a.ip[3] == b.ip[3]) - return qtrue; - return qfalse; - } - - Com_Printf ("NET_CompareBaseAdr: bad address type\n"); - return qfalse; -} - -const char *NET_AdrToString (netadr_t a) -{ - static char s[64]; - - 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), "%i.%i.%i.%i:%hu", - a.ip[0], a.ip[1], a.ip[2], a.ip[3], BigShort(a.port)); - } - - return s; -} - - -qboolean NET_CompareAdr (netadr_t a, netadr_t b) -{ - if (a.type != b.type) - return qfalse; - - if (a.type == NA_LOOPBACK) - return qtrue; - - if (a.type == NA_IP) - { - if (a.ip[0] == b.ip[0] && a.ip[1] == b.ip[1] && a.ip[2] == b.ip[2] && a.ip[3] == b.ip[3] && a.port == b.port) - return qtrue; - return qfalse; - } - - Com_Printf ("NET_CompareAdr: bad address type\n"); - return qfalse; -} - - -qboolean NET_IsLocalAddress( netadr_t adr ) { - return adr.type == NA_LOOPBACK; -} - - /* ============================================================================= @@ -743,10 +675,10 @@ NET_StringToAdr Traps "localhost" for loopback, passes everything else to system ============= */ -qboolean NET_StringToAdr( const char *s, netadr_t *a ) { +qboolean NET_StringToAdr( const char *s, netadr_t *a, netadrtype_t family ) { qboolean r; - char base[MAX_STRING_CHARS]; - char *port; + char base[MAX_STRING_CHARS], *search; + char *port = NULL; if (!strcmp (s, "localhost")) { Com_Memset (a, 0, sizeof(*a)); @@ -756,25 +688,41 @@ qboolean NET_StringToAdr( const char *s, netadr_t *a ) { // look for a port number Q_strncpyz( base, s, sizeof( base ) ); - port = strstr( base, ":" ); - if ( port ) { - *port = 0; - port++; + + if(*base == '[') + { + // This is an ipv6 address, handle it specially. + search = strchr(base, ']'); + if(search) + { + *search = '\0'; + search++; + + if(*search == ':') + port = search + 1; + } + + search = base + 1; + } + else + { + port = strchr( base, ':' ); + + if ( port ) { + *port = '\0'; + port++; + } + + search = base; } - r = Sys_StringToAdr( base, a ); + r = Sys_StringToAdr( search, a, family ); if ( !r ) { a->type = NA_BAD; return qfalse; } - // inet_addr returns this if out of range - if ( a->ip[0] == 255 && a->ip[1] == 255 && a->ip[2] == 255 && a->ip[3] == 255 ) { - a->type = NA_BAD; - return qfalse; - } - if ( port ) { a->port = BigShort( (short)atoi( port ) ); } else { diff --git a/code/qcommon/net_ip.c b/code/qcommon/net_ip.c index b35808c..ff73fc2 100644 --- a/code/qcommon/net_ip.c +++ b/code/qcommon/net_ip.c @@ -24,9 +24,12 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA #include "../qcommon/qcommon.h" #ifdef _WIN32 -#include +// #include +#include +#include typedef int socklen_t; +#define sa_family_t ADDRESS_FAMILY #define EAGAIN WSAEWOULDBLOCK #define EADDRNOTAVAIL WSAEADDRNOTAVAIL #define EAFNOSUPPORT WSAEAFNOSUPPORT @@ -52,13 +55,7 @@ static qboolean winsockInitialized = qfalse; #include #include #include - -#ifdef MACOS_X -#include -#include -#include -#include // for 'struct sockaddr_dl' -#endif +#include #ifdef __sun #include @@ -74,23 +71,39 @@ typedef int SOCKET; #endif static qboolean usingSocks = qfalse; -static qboolean networkingEnabled = qfalse; +static int networkingEnabled = 0; -static cvar_t *net_noudp; +#define NET_ENABLEV4 0x01 +#define NET_ENABLEV6 0x02 +// if this flag is set, always attempt ipv6 connections instead of ipv4 if a v6 address is found. +#define NET_PRIOV6 0x04 +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 struct sockaddr socksRelayAddr; -static SOCKET ip_socket; -static SOCKET socks_socket; +static SOCKET ip_socket = INVALID_SOCKET; +static SOCKET ip6_socket = INVALID_SOCKET; +static SOCKET socks_socket = INVALID_SOCKET; #define MAX_IPS 16 static int numIP; +static int numIP6; + static byte localIP[MAX_IPS][4]; +static byte localIPmask[MAX_IPS][4]; +static byte localIP6[MAX_IPS][16]; +static byte localIP6mask[MAX_IPS][16]; //============================================================================= @@ -156,8 +169,6 @@ char *NET_ErrorString( void ) { } static void NetadrToSockadr( netadr_t *a, struct sockaddr *s ) { - memset( s, 0, sizeof(*s) ); - if( a->type == NA_BROADCAST ) { ((struct sockaddr_in *)s)->sin_family = AF_INET; ((struct sockaddr_in *)s)->sin_port = a->port; @@ -168,6 +179,11 @@ static void NetadrToSockadr( netadr_t *a, struct sockaddr *s ) { ((struct sockaddr_in *)s)->sin_addr.s_addr = *(int *)&a->ip; ((struct sockaddr_in *)s)->sin_port = a->port; } + else if( a->type == 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; + } } @@ -177,32 +193,98 @@ static void SockadrToNetadr( struct sockaddr *s, netadr_t *a ) { *(int *)&a->ip = ((struct sockaddr_in *)s)->sin_addr.s_addr; a->port = ((struct sockaddr_in *)s)->sin_port; } + 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; + } } +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; +} + /* ============= Sys_StringToSockaddr ============= */ -static qboolean Sys_StringToSockaddr( const char *s, struct sockaddr *sadr ) { - struct hostent *h; +static qboolean Sys_StringToSockaddr(const char *s, struct sockaddr *sadr, int sadr_len, sa_family_t family) +{ + struct addrinfo hints, *res = NULL, *search; + int retval; - memset( sadr, 0, sizeof( *sadr ) ); - - ((struct sockaddr_in *)sadr)->sin_family = AF_INET; - ((struct sockaddr_in *)sadr)->sin_port = 0; + memset(sadr, '\0', sizeof(*sadr)); + memset(&hints, '\0', sizeof(hints)); + + hints.ai_family = family; + + retval = getaddrinfo(s, NULL, &hints, &res); - if( s[0] >= '0' && s[0] <= '9' ) { - *(int *)&((struct sockaddr_in *)sadr)->sin_addr = inet_addr(s); - } else { - if( ( h = gethostbyname( s ) ) == 0 ) { - return 0; + if(!retval) + { + if(family == AF_UNSPEC) + { + // Decide here and now which protocol family to use + if((net_enabled->integer & NET_ENABLEV6) && (net_enabled->integer & NET_PRIOV6)) + search = SearchAddrInfo(res, AF_INET6); + else + search = SearchAddrInfo(res, AF_INET); + + if(!search) + { + if((net_enabled->integer & NET_ENABLEV6) && + (net_enabled->integer & NET_PRIOV6) && + (net_enabled->integer & NET_ENABLEV4)) + search = SearchAddrInfo(res, AF_INET); + else if(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; } - *(int *)&((struct sockaddr_in *)sadr)->sin_addr = *(int *)h->h_addr_list[0]; + 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)); - return qtrue; + if(res) + freeaddrinfo(res); + + return qfalse; +} + +/* +============= +Sys_SockaddrToString +============= +*/ +static void Sys_SockaddrToString(char *dest, int destlen, struct sockaddr *input, int inputlen) +{ + getnameinfo(input, inputlen, dest, destlen, NULL, 0, NI_NUMERICHOST); } /* @@ -210,17 +292,128 @@ static qboolean Sys_StringToSockaddr( const char *s, struct sockaddr *sadr ) { Sys_StringToAdr ============= */ -qboolean Sys_StringToAdr( const char *s, netadr_t *a ) { - struct sockaddr sadr; +qboolean Sys_StringToAdr( const char *s, netadr_t *a, netadrtype_t family ) { + struct sockaddr_storage sadr; + sa_family_t fam; - if ( !Sys_StringToSockaddr( s, &sadr ) ) { + switch(family) + { + case NA_IP: + fam = AF_INET; + break; + case NA_IP6: + fam = AF_INET6; + break; + default: + fam = AF_UNSPEC; + break; + } + if( !Sys_StringToSockaddr(s, (struct sockaddr *) &sadr, sizeof(sadr), fam ) ) { return qfalse; } - SockadrToNetadr( &sadr, a ); + SockadrToNetadr( (struct sockaddr *) &sadr, a ); return qtrue; } +/* +=================== +NET_CompareBaseAdr + +Compares without the port +=================== +*/ +qboolean NET_CompareBaseAdr (netadr_t a, netadr_t b) +{ + if (a.type != b.type) + return qfalse; + + if (a.type == NA_LOOPBACK) + return qtrue; + + if (a.type == NA_IP) + { + if(!memcmp(a.ip, b.ip, sizeof(a.ip))) + return qtrue; + + return qfalse; + } + + if (a.type == NA_IP6) + { + if(!memcmp(a.ip6, b.ip6, sizeof(a.ip6))) + return qtrue; + + return qfalse; + } + + Com_Printf ("NET_CompareBaseAdr: bad address type\n"); + return qfalse; +} + +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 || a.type == NA_IP6) + { + struct sockaddr_storage sadr; + + memset(&sadr, 0, sizeof(sadr)); + NetadrToSockadr(&a, (struct sockaddr *) &sadr); + Sys_SockaddrToString(s, sizeof(s), (struct sockaddr *) &sadr, sizeof(sadr)); + } + + return s; +} + +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 || a.type == NA_IP6) + { + if(a.type == NA_IP) + Com_sprintf(s, sizeof(s), "%s:%hu", NET_AdrToString(a), ntohs(a.port)); + else if(a.type == NA_IP6) + Com_sprintf(s, sizeof(s), "[%s]:%hu", NET_AdrToString(a), ntohs(a.port)); + } + + 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; +} + //============================================================================= /* @@ -236,56 +429,87 @@ int recvfromCount; qboolean Sys_GetPacket( netadr_t *net_from, msg_t *net_message ) { int ret; - struct sockaddr from; + struct sockaddr_storage from; socklen_t fromlen; int err; - if( !ip_socket ) { - return qfalse; - } - - fromlen = sizeof(from); #ifdef _DEBUG recvfromCount++; // performance check #endif - ret = recvfrom( ip_socket, net_message->data, net_message->maxsize, 0, (struct sockaddr *)&from, &fromlen ); - if (ret == SOCKET_ERROR) + + if(ip_socket != INVALID_SOCKET) { - err = socketError; + fromlen = sizeof(from); + ret = recvfrom( ip_socket, net_message->data, net_message->maxsize, 0, (struct sockaddr *)&from, &fromlen ); + + if (ret == SOCKET_ERROR) + { + err = socketError; - if( err == EAGAIN || err == ECONNRESET ) { - return qfalse; + if( err != EAGAIN && err != ECONNRESET ) + Com_Printf( "NET_GetPacket: %s\n", NET_ErrorString() ); } - Com_Printf( "NET_GetPacket: %s\n", NET_ErrorString() ); - return qfalse; - } - - 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; + 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; } - 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( &from, net_from ); - net_message->readcount = 0; } + + if(ip6_socket != INVALID_SOCKET) + { + fromlen = sizeof(from); + ret = recvfrom(ip6_socket, net_message->data, net_message->maxsize, 0, (struct sockaddr *)&from, &fromlen); + + if (ret == SOCKET_ERROR) + { + err = socketError; - if( ret == net_message->maxsize ) { - Com_Printf( "Oversize packet from %s\n", NET_AdrToString (*net_from) ); - return qfalse; + 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; + } } - - net_message->cursize = ret; - return qtrue; + + return qfalse; } //============================================================================= @@ -299,18 +523,18 @@ Sys_SendPacket */ void Sys_SendPacket( int length, const void *data, netadr_t to ) { int ret; - struct sockaddr addr; + struct sockaddr_storage addr; - if( to.type != NA_BROADCAST && to.type != NA_IP ) { + if( to.type != NA_BROADCAST && to.type != NA_IP && to.type != NA_IP6 ) { Com_Error( ERR_FATAL, "Sys_SendPacket: bad address type" ); return; } - if( !ip_socket ) { + if((ip_socket == INVALID_SOCKET && to.type == NA_IP) || (ip6_socket == INVALID_SOCKET && to.type == NA_IP6)) return; - } - NetadrToSockadr( &to, &addr ); + memset(&addr, 0, sizeof(addr)); + NetadrToSockadr( &to, (struct sockaddr *) &addr ); if( usingSocks && to.type == NA_IP ) { socksBuf[0] = 0; // reserved @@ -323,7 +547,10 @@ void Sys_SendPacket( int length, const void *data, netadr_t to ) { ret = sendto( ip_socket, socksBuf, length+10, 0, &socksRelayAddr, sizeof(socksRelayAddr) ); } else { - ret = sendto( ip_socket, data, length, 0, &addr, sizeof(addr) ); + if(addr.ss_family == AF_INET) + ret = sendto( ip_socket, data, length, 0, (struct sockaddr *) &addr, sizeof(addr) ); + else + ret = sendto( ip6_socket, data, length, 0, (struct sockaddr *) &addr, sizeof(addr) ); } if( ret == SOCKET_ERROR ) { int err = socketError; @@ -353,62 +580,71 @@ LAN clients will have their rate var ignored ================== */ qboolean Sys_IsLANAddress( netadr_t adr ) { - int i; + int index, run; + qboolean differed; if( adr.type == NA_LOOPBACK ) { return qtrue; } - if( adr.type != NA_IP ) { - return qfalse; - } - - // 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; - - // choose which comparison to use based on the class of the address being tested - // any local adresses of a different class than the address being tested will fail based on the first byte - // FIXME tma 28/08/07 Try and make this work for arbitrary subnet masks somehow + 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 && adr.ip[1] == 0 && adr.ip[2] == 0 && adr.ip[3] == 1 ) { - return qtrue; - } + if(adr.ip[0] == 127) + return qtrue; - // Class A - if( (adr.ip[0] & 0x80) == 0x00 ) { - for ( i = 0 ; i < numIP ; i++ ) { - if( adr.ip[0] == localIP[i][0] ) { - return qtrue; + for(index = 0; index < numIP; index++) + { + differed = qfalse; + + for(run = 0; run < sizeof(*localIP); run++) + { + if((localIP[index][run] & localIPmask[index][run]) != (adr.ip[run] & localIPmask[index][run])) + { + differed = qtrue; + break; + } } - } - - return qfalse; - } - - // Class B - if( (adr.ip[0] & 0xc0) == 0x80 ) { - for ( i = 0 ; i < numIP ; i++ ) { - if( adr.ip[0] == localIP[i][0] && adr.ip[1] == localIP[i][1] ) { + + if(!differed) return qtrue; - } } - return qfalse; } - - // Class C - for ( i = 0 ; i < numIP ; i++ ) { - if( adr.ip[0] == localIP[i][0] && adr.ip[1] == localIP[i][1] && adr.ip[2] == localIP[i][2] ) { + 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; + + for(index = 0; index < numIP6; index++) + { + differed = qfalse; + + for(run = 0; run < sizeof(*localIP6); run++) + { + if((localIP6[index][run] & localIP6mask[index][run]) != (adr.ip6[run] & localIP6mask[index][run])) + { + differed = qtrue; + break; + } + } + + if(!differed) + return qtrue; } } + return qfalse; } @@ -419,9 +655,27 @@ Sys_ShowIP */ void Sys_ShowIP(void) { int i; + char buf[NET_ADDRSTRMAXLEN]; + struct sockaddr_in sa; + struct sockaddr_in6 sa6; + + for (i = 0; i < numIP; i++) + { + memset(&sa, 0, sizeof(sa)); - for (i = 0; i < numIP; i++) { - Com_Printf( "IP: %i.%i.%i.%i\n", localIP[i][0], localIP[i][1], localIP[i][2], localIP[i][3] ); + memcpy( &sa.sin_addr.s_addr, localIP[i], sizeof(sa.sin_addr.s_addr) ); + sa.sin_family = AF_INET; + Sys_SockaddrToString(buf, sizeof(buf), (struct sockaddr *) &sa, sizeof(sa)); + Com_Printf( "IP: %s\n", buf); + } + for (i = 0; i < numIP6; i++) + { + memset(&sa6, 0, sizeof(sa6)); + + memcpy( &sa6.sin6_addr, localIP6[i], sizeof(sa6.sin6_addr) ); + sa6.sin6_family = AF_INET6; + Sys_SockaddrToString(buf, sizeof(buf), (struct sockaddr *) &sa6, sizeof(sa6)); + Com_Printf( "IP6: %s\n", buf); } } @@ -434,12 +688,13 @@ void Sys_ShowIP(void) { NET_IPSocket ==================== */ -int NET_IPSocket( char *net_interface, int port ) { +int NET_IPSocket( char *net_interface, int port, int *err ) { SOCKET newsocket; struct sockaddr_in address; qboolean _true = qtrue; int i = 1; - int err; + + *err = 0; if( net_interface ) { Com_Printf( "Opening IP socket: %s:%i\n", net_interface, port ); @@ -448,31 +703,38 @@ int NET_IPSocket( char *net_interface, int port ) { Com_Printf( "Opening IP socket: localhost:%i\n", port ); } - if( ( newsocket = socket( AF_INET, SOCK_DGRAM, IPPROTO_UDP ) ) == INVALID_SOCKET ) { - err = socketError; - if( err != EAFNOSUPPORT ) { - Com_Printf( "WARNING: UDP_OpenSocket: socket: %s\n", NET_ErrorString() ); - } - return 0; + if( ( newsocket = socket( PF_INET, SOCK_DGRAM, IPPROTO_UDP ) ) == INVALID_SOCKET ) { + *err = socketError; + Com_Printf( "WARNING: NET_IPSocket: socket: %s\n", NET_ErrorString() ); + return newsocket; } - // make it non-blocking if( ioctlsocket( newsocket, FIONBIO, (u_long *)&_true ) == SOCKET_ERROR ) { - Com_Printf( "WARNING: UDP_OpenSocket: ioctl FIONBIO: %s\n", NET_ErrorString() ); - return 0; + Com_Printf( "WARNING: NET_IPSocket: ioctl FIONBIO: %s\n", NET_ErrorString() ); + *err = socketError; + closesocket(newsocket); + return INVALID_SOCKET; } // make it broadcast capable - if( setsockopt( newsocket, SOL_SOCKET, SO_BROADCAST, (char *)&i, sizeof(i) ) == SOCKET_ERROR ) { - Com_Printf( "WARNING: UDP_OpenSocket: setsockopt SO_BROADCAST: %s\n", NET_ErrorString() ); - return 0; + if( setsockopt( newsocket, SOL_SOCKET, SO_BROADCAST, (char *) &i, sizeof(i) ) == SOCKET_ERROR ) { + Com_Printf( "WARNING: NET_IPSocket: setsockopt SO_BROADCAST: %s\n", NET_ErrorString() ); + + // it is not that bad if this one fails. +// return newsocket; } if( !net_interface || !net_interface[0] || !Q_stricmp(net_interface, "localhost") ) { + address.sin_family = AF_INET; address.sin_addr.s_addr = INADDR_ANY; } - else { - Sys_StringToSockaddr( net_interface, (struct sockaddr *)&address ); + else + { + if(!Sys_StringToSockaddr( net_interface, (struct sockaddr *)&address, sizeof(address), AF_INET)) + { + closesocket(newsocket); + return INVALID_SOCKET; + } } if( port == PORT_ANY ) { @@ -482,12 +744,88 @@ int NET_IPSocket( char *net_interface, int port ) { address.sin_port = htons( (short)port ); } - address.sin_family = AF_INET; + if( bind( newsocket, (void *)&address, sizeof(address) ) == SOCKET_ERROR ) { + Com_Printf( "WARNING: NET_IPSocket: bind: %s\n", NET_ErrorString() ); + *err = socketError; + closesocket( newsocket ); + return INVALID_SOCKET; + } + + return newsocket; +} + +/* +==================== +NET_IP6Socket +==================== +*/ +int NET_IP6Socket( char *net_interface, int port, int *err ) { + SOCKET newsocket; + struct sockaddr_in6 address; + qboolean _true = qtrue; + int i = 1; + + *err = 0; + + if( net_interface ) { + Com_Printf( "Opening IP6 socket: [%s]:%i\n", net_interface, port ); + } + else { + Com_Printf( "Opening IP6 socket: localhost:%i\n", port ); + } + + if( ( newsocket = socket( PF_INET6, SOCK_DGRAM, IPPROTO_UDP ) ) == INVALID_SOCKET ) { + *err = socketError; + Com_Printf( "WARNING: NET_IP6Socket: socket: %s\n", NET_ErrorString() ); + return newsocket; + } + + // make it non-blocking + if( ioctlsocket( newsocket, FIONBIO, (u_long *)&_true ) == SOCKET_ERROR ) { + Com_Printf( "WARNING: NET_IP6Socket: ioctl FIONBIO: %s\n", NET_ErrorString() ); + *err = socketError; + closesocket(newsocket); + return INVALID_SOCKET; + } + + // ipv4 addresses should not be allowed to connect via this socket. + if(setsockopt(newsocket, IPPROTO_IPV6, IPV6_V6ONLY, (char *) &i, sizeof(i)) == SOCKET_ERROR) + { + // win32 systems don't seem to support this anyways. + Com_DPrintf("WARNING: NET_IP6Socket: setsockopt IPV6_V6ONLY: %s\n", NET_ErrorString()); + } + + // make it broadcast capable + if( setsockopt( newsocket, SOL_SOCKET, SO_BROADCAST, (char *) &i, sizeof(i) ) == SOCKET_ERROR ) { + Com_Printf( "WARNING: NET_IP6Socket: setsockopt SO_BROADCAST: %s\n", NET_ErrorString() ); +// return newsocket; + } + + if( !net_interface || !net_interface[0] || !Q_stricmp(net_interface, "localhost") ) { + address.sin6_family = AF_INET6; + address.sin6_addr = in6addr_any; + } + else + { + if(!Sys_StringToSockaddr( net_interface, (struct sockaddr *)&address, sizeof(address), AF_INET6)) + { + closesocket(newsocket); + return INVALID_SOCKET; + } + } + + if( port == PORT_ANY ) { + address.sin6_port = 0; + } + else { + address.sin6_port = htons( (short)port ); + } if( bind( newsocket, (void *)&address, sizeof(address) ) == SOCKET_ERROR ) { - Com_Printf( "WARNING: UDP_OpenSocket: bind: %s\n", NET_ErrorString() ); + Com_Printf( "WARNING: NET_IP6Socket: bind: %s\n", NET_ErrorString() ); + *err = socketError; closesocket( newsocket ); - return 0; + return INVALID_SOCKET; } return newsocket; @@ -676,161 +1014,189 @@ void NET_OpenSocks( int port ) { NET_GetLocalAddress ===================== */ -#ifdef MACOS_X -// Don't do a forward mapping from the hostname of the machine to the IP. -// The reason is that we might have obtained an IP address from DHCP and -// there might not be any name registered for the machine. On Mac OS X, -// the machine name defaults to 'localhost' and NetInfo has 127.0.0.1 -// listed for this name. Instead, we want to get a list of all the IP -// network interfaces on the machine. This code adapted from -// OmniNetworking. - -#ifdef _SIZEOF_ADDR_IFREQ - // tjw: OSX 10.4 does not have sa_len - #define IFR_NEXT(ifr) \ - ((struct ifreq *) ((char *) ifr + _SIZEOF_ADDR_IFREQ(*ifr))) -#else - // tjw: assume that once upon a time some version did have sa_len - #define IFR_NEXT(ifr) \ - ((struct ifreq *) ((char *) (ifr) + sizeof(*(ifr)) + \ - MAX(0, (int) (ifr)->ifr_addr.sa_len - (int) sizeof((ifr)->ifr_addr)))) -#endif +int NET_AddLocalAddress(struct sockaddr *sa) +{ + struct sockaddr_in *sin; + struct sockaddr_in6 *sin6; + int index; -void NET_GetLocalAddress( void ) { - struct ifreq requestBuffer[MAX_IPS], *linkInterface, *inetInterface; - struct ifconf ifc; - struct ifreq ifr; - struct sockaddr_dl *sdl; - int interfaceSocket; - int family; - - // Set this early so we can just return if there is an error - numIP = 0; - - ifc.ifc_len = sizeof(requestBuffer); - ifc.ifc_buf = (caddr_t)requestBuffer; - - // Since we get at this info via an ioctl, we need a temporary little socket. - // This will only get AF_INET interfaces, but we probably don't care about - // anything else. If we do end up caring later, we should add a - // ONAddressFamily and at a -interfaces method to it. - family = AF_INET; - if ((interfaceSocket = socket(family, SOCK_DGRAM, 0)) < 0) { - Com_Printf("NET_GetLocalAddress: Unable to create temporary socket, errno = %d\n", errno); - return; - } + if(sa->sa_family == AF_INET) + { + if(numIP > MAX_IPS) + return -1; + + sin = (struct sockaddr_in *) sa; + + for(index = 0; index < numIP; index++) + { + if( !memcmp(&localIP[index], &sin->sin_addr.s_addr, sizeof(*localIP)) ) + break; + } - if (ioctl(interfaceSocket, SIOCGIFCONF, &ifc) != 0) { - Com_Printf("NET_GetLocalAddress: Unable to get list of network interfaces, errno = %d\n", errno); - return; + if(index >= numIP) + memcpy(localIP[numIP++], &sin->sin_addr.s_addr, sizeof(*localIP)); + + return numIP - 1; } - - linkInterface = (struct ifreq *) ifc.ifc_buf; - while ((char *) linkInterface < &ifc.ifc_buf[ifc.ifc_len]) { - unsigned int nameLength; - - // The ioctl returns both the entries having the address (AF_INET) - // and the link layer entries (AF_LINK). The AF_LINK entry has the - // link layer address which contains the interface type. This is the - // only way I can see to get this information. We cannot assume that - // we will get bot an AF_LINK and AF_INET entry since the interface - // may not be configured. For example, if you have a 10Mb port on - // the motherboard and a 100Mb card, you may not configure the - // motherboard port. - - // For each AF_LINK entry... - if (linkInterface->ifr_addr.sa_family == AF_LINK) { - // if there is a matching AF_INET entry - inetInterface = (struct ifreq *) ifc.ifc_buf; - while ((char *) inetInterface < &ifc.ifc_buf[ifc.ifc_len]) { - if (inetInterface->ifr_addr.sa_family == AF_INET && - !strncmp(inetInterface->ifr_name, linkInterface->ifr_name, - sizeof(linkInterface->ifr_name))) { - - for (nameLength = 0; nameLength < IFNAMSIZ; nameLength++) - if (!linkInterface->ifr_name[nameLength]) - break; - - sdl = (struct sockaddr_dl *)&linkInterface->ifr_addr; - // Skip loopback interfaces - if (sdl->sdl_type != IFT_LOOP) { - // Get the local interface address - strncpy(ifr.ifr_name, inetInterface->ifr_name, sizeof(ifr.ifr_name)); - if (ioctl(interfaceSocket, SIOCGIFADDR, (caddr_t)&ifr) < 0) { - Com_Printf("NET_GetLocalAddress: Unable to get local address " - "for interface '%s', errno = %d\n", inetInterface->ifr_name, errno); - } else { - struct sockaddr_in *sin; - int ip; - - sin = (struct sockaddr_in *)&ifr.ifr_addr; - - ip = ntohl(sin->sin_addr.s_addr); - localIP[ numIP ][0] = (ip >> 24) & 0xff; - localIP[ numIP ][1] = (ip >> 16) & 0xff; - localIP[ numIP ][2] = (ip >> 8) & 0xff; - localIP[ numIP ][3] = (ip >> 0) & 0xff; - Com_Printf( "IP: %i.%i.%i.%i (%s)\n", - localIP[ numIP ][0], localIP[ numIP ][1], - localIP[ numIP ][2], localIP[ numIP ][3], - inetInterface->ifr_name); - numIP++; - } - } - - // We will assume that there is only one AF_INET entry per AF_LINK entry. - // What happens when we have an interface that has multiple IP addresses, or - // can that even happen? - // break; - } - inetInterface = IFR_NEXT(inetInterface); - } + else if(sa->sa_family == AF_INET6) + { + if(numIP6 > MAX_IPS) + return -1; + + sin6 = (struct sockaddr_in6 *) sa; + + for(index = 0; index < numIP6; index++) + { + if( !memcmp(&localIP6[index], &sin6->sin6_addr, sizeof(*localIP6)) ) + break; } - linkInterface = IFR_NEXT(linkInterface); + + if(index >= numIP6) + memcpy(localIP6[numIP6++], &sin6->sin6_addr, sizeof(*localIP6)); + + return numIP6 - 1; } - close(interfaceSocket); + return -1; } -#else + +void NET_AddLocalNetmask(struct sockaddr *sa, int position) +{ + struct sockaddr_in *sin; + struct sockaddr_in6 *sin6; + + if(sa->sa_family == AF_INET) + { + sin = (struct sockaddr_in *) sa; + + memcpy(localIPmask[position], &sin->sin_addr.s_addr, sizeof(*localIPmask)); + } + else if(sa->sa_family == AF_INET6) + { + sin6 = (struct sockaddr_in6 *) sa; + + memcpy(localIP6mask[position], &sin6->sin6_addr, sizeof(*localIP6mask)); + } +} + +#ifdef _WIN32 void NET_GetLocalAddress( void ) { char hostname[256]; - struct hostent *hostInfo; - int error; - char *p; - int ip; - int n; - - if( gethostname( hostname, 256 ) == SOCKET_ERROR ) { - error = socketError; - return; - } + struct addrinfo hint; + struct addrinfo *res = NULL; + struct addrinfo *search; - hostInfo = gethostbyname( hostname ); - if( !hostInfo ) { - error = socketError; + if(gethostname( hostname, 256 ) == SOCKET_ERROR) return; + + Com_Printf( "Hostname: %s\n", hostname ); + + memset(&hint, 0, sizeof(hint)); + + hint.ai_family = AF_UNSPEC; + hint.ai_socktype = SOCK_DGRAM; + + if(getaddrinfo(hostname, NULL, &hint, &res)) + return; + + // add all IPs from returned list. + for(search = res; search; search = search->ai_next) + NET_AddLocalAddress(search->ai_addr); + + memset(localIPmask, 0, sizeof(localIPmask)); + memset(localIP6mask, 0xFF, sizeof(localIP6mask)); + + Sys_ShowIP(); +} + +#else +/* int NET_AddInterfaceToList(char (*interfaces)[IF_NAMESIZE], int numinterfaces, char *add) +{ + int index; + + for(index = 0; index < numinterfaces && index < MAX_IPS; index++) + { + if(!strcmp(interfaces[index], add)) + break; } + + if(index >= numinterfaces && index < MAX_IPS) + { + Q_strncpyz(interfaces[index], add, IF_NAMESIZE); + numinterfaces++; + } + + return numinterfaces; +}*/ - Com_Printf( "Hostname: %s\n", hostInfo->h_name ); - n = 0; - while( ( p = hostInfo->h_aliases[n++] ) != NULL ) { - Com_Printf( "Alias: %s\n", p ); +void NET_GetLocalAddress(void) +{ + struct ifaddrs *ifap, *search; + int retval; + + if(getifaddrs(&ifap)) + Com_Printf("NET_GetLocalAddress: Unable to get list of network interfaces: %s\n", NET_ErrorString()); + else + { + for(search = ifap; search; search = search->ifa_next) + { + if((retval = NET_AddLocalAddress(search->ifa_addr)) >= 0) + NET_AddLocalNetmask(search->ifa_netmask, retval); + } + + freeifaddrs(ifap); + + Sys_ShowIP(); } - if ( hostInfo->h_addrtype != AF_INET ) { - return; +/* + char interfaces[MAX_IPS][IF_NAMESIZE]; + int numinterfaces; + struct ifreq irbuf[MAX_IPS], ireq; + struct ifconf ifc; + int index, numdev; + + memset(interfaces, '\0', sizeof(interfaces)); + + ifc.ifc_req = irbuf; + + // compile a list of all available interfaces on this machine. + + if(ip_socket != INVALID_SOCKET) + { + ifc.ifc_len = sizeof(irbuf); + + // Use our IP sockets for the ioctl stuff. + if(ioctl(ip_socket, SIOCGIFCONF, &ifc)) + { + Com_Printf("NET_GetLocalAddress: Unable to get list of network interfaces: %s\n", NET_ErrorString()); + return; + } + + numdev = ifc.ifc_len / sizeof(*irbuf); + + for(index = 0; index < numdev; index++) + numinterfaces = NET_AddInterfaceToList(interfaces, numinterfaces, irbuf[index].ifr_name); } - numIP = 0; - while( ( p = hostInfo->h_addr_list[numIP] ) != NULL && numIP < MAX_IPS ) { - ip = ntohl( *(int *)p ); - localIP[ numIP ][0] = p[0]; - localIP[ numIP ][1] = p[1]; - localIP[ numIP ][2] = p[2]; - localIP[ numIP ][3] = p[3]; - Com_Printf( "IP: %i.%i.%i.%i\n", ( ip >> 24 ) & 0xff, ( ip >> 16 ) & 0xff, ( ip >> 8 ) & 0xff, ip & 0xff ); - numIP++; + if(ip6_socket != INVALID_SOCKET) + { + ifc.ifc_len = sizeof(irbuf); + + // Use our IP sockets for the ioctl stuff. + if(ioctl(ip6_socket, SIOCGIFCONF, &ifc)) + { + Com_Printf("NET_GetLocalAddress: Unable to get list of network interfaces: %s\n", NET_ErrorString()); + return; + } + + numdev = ifc.ifc_len / sizeof(*irbuf); + + for(index = 0; index < numdev; index++) + numinterfaces = NET_AddInterfaceToList(interfaces, numinterfaces, irbuf[index].ifr_name); } + + */ } #endif @@ -840,28 +1206,66 @@ NET_OpenIP ==================== */ void NET_OpenIP( void ) { - cvar_t *ip; - int port; int i; + int err; + int port; + int port6; - ip = Cvar_Get( "net_ip", "localhost", CVAR_LATCH ); - port = Cvar_Get( "net_port", va( "%i", PORT_SERVER ), CVAR_LATCH )->integer; + net_ip = Cvar_Get( "net_ip", "localhost", CVAR_LATCH ); + net_ip6 = Cvar_Get( "net_ip6", "localhost", CVAR_LATCH ); + net_port = Cvar_Get( "net_port", va( "%i", PORT_SERVER ), CVAR_LATCH ); + net_port6 = Cvar_Get( "net_port6", va( "%i", PORT_SERVER ), CVAR_LATCH ); + + port = net_port->integer; + port6 = net_port6->integer; // automatically scan for a valid port, so multiple // dedicated servers can be started without requiring // a different net_port for each one - for( i = 0 ; i < 10 ; i++ ) { - ip_socket = NET_IPSocket( ip->string, port + i ); - if ( ip_socket ) { - Cvar_SetValue( "net_port", port + i ); - if ( net_socksEnabled->integer ) { - NET_OpenSocks( port + i ); + if(net_enabled->integer & NET_ENABLEV4) + { + for( i = 0 ; i < 10 ; i++ ) { + ip_socket = NET_IPSocket( net_ip->string, port + i, &err ); + if (ip_socket != INVALID_SOCKET) { + Cvar_SetValue( "net_port", port + i ); + + if (net_socksEnabled->integer) + NET_OpenSocks( port + i ); + + break; + } + else + { + if(err == EAFNOSUPPORT) + break; + } + } + + if(ip_socket == INVALID_SOCKET) + Com_Printf( "WARNING: Couldn't bind to a v4 ip address.\n"); + } + + if(net_enabled->integer & NET_ENABLEV6) + { + for( i = 0 ; i < 10 ; i++ ) + { + ip6_socket = NET_IP6Socket(net_ip6->string, port6 + i, &err); + if (ip6_socket != INVALID_SOCKET) + { + Cvar_SetValue( "net_port6", port6 + i ); + break; + } + else + { + if(err == EAFNOSUPPORT) + break; } - NET_GetLocalAddress(); - return; } + if(ip6_socket == INVALID_SOCKET) + Com_Printf( "WARNING: Couldn't bind to a v6 ip address.\n"); } - Com_Printf( "WARNING: Couldn't allocate IP port\n"); + + NET_GetLocalAddress(); } @@ -878,11 +1282,18 @@ static qboolean NET_GetCvars( void ) { modified = qfalse; - if( net_noudp && net_noudp->modified ) { + if( net_enabled && net_enabled->modified ) { modified = qtrue; } - net_noudp = Cvar_Get( "net_noudp", "0", CVAR_LATCH | CVAR_ARCHIVE ); - + +#ifdef DEDICATED + // I want server owners to explicitly turn ipv6 support on. + net_enabled = Cvar_Get( "net_enabled", "1", CVAR_LATCH | CVAR_ARCHIVE ); +#else + /* End users have it enabled so they can connect to ipv6-only hosts, but ipv4 will be + * used if available due to ping */ + net_enabled = Cvar_Get( "net_enabled", "3", CVAR_LATCH | CVAR_ARCHIVE ); +#endif if( net_socksEnabled && net_socksEnabled->modified ) { modified = qtrue; @@ -927,8 +1338,8 @@ void NET_Config( qboolean enableNetworking ) { // get any latched changes to cvars modified = NET_GetCvars(); - if( net_noudp->integer ) { - enableNetworking = qfalse; + if( !net_enabled->integer ) { + enableNetworking = 0; } // if enable state is the same and no cvars were modified, we have nothing to do @@ -959,19 +1370,25 @@ void NET_Config( qboolean enableNetworking ) { } if( stop ) { - if ( ip_socket && ip_socket != INVALID_SOCKET ) { + if ( ip_socket != INVALID_SOCKET ) { closesocket( ip_socket ); - ip_socket = 0; + ip_socket = INVALID_SOCKET; } - if ( socks_socket && socks_socket != INVALID_SOCKET ) { + if ( ip6_socket != INVALID_SOCKET ) { + closesocket( ip6_socket ); + ip6_socket = INVALID_SOCKET; + } + + if ( socks_socket != INVALID_SOCKET ) { closesocket( socks_socket ); - socks_socket = 0; + socks_socket = INVALID_SOCKET; } + } if( start ) { - if (! net_noudp->integer ) { + if (net_enabled->integer) { NET_OpenIP(); } } @@ -1033,18 +1450,34 @@ Sleeps msec or until something happens on the network void NET_Sleep( int msec ) { struct timeval timeout; fd_set fdset; + int highestfd = -1; if (!com_dedicated->integer) return; // we're not a server, just run full speed - if (!ip_socket) + if (ip_socket == INVALID_SOCKET && ip6_socket == INVALID_SOCKET) return; if (msec < 0 ) return; FD_ZERO(&fdset); - FD_SET(ip_socket, &fdset); + + if(ip_socket != INVALID_SOCKET) + { + FD_SET(ip_socket, &fdset); + + if(ip_socket > highestfd) + highestfd = ip_socket; + } + if(ip6_socket != INVALID_SOCKET) + { + FD_SET(ip6_socket, &fdset); + + if(ip6_socket > highestfd) + highestfd = ip6_socket; + } + timeout.tv_sec = msec/1000; timeout.tv_usec = (msec%1000)*1000; select(ip_socket+1, &fdset, NULL, NULL, &timeout); diff --git a/code/qcommon/qcommon.h b/code/qcommon/qcommon.h index 877b655..a50da79 100644 --- a/code/qcommon/qcommon.h +++ b/code/qcommon/qcommon.h @@ -136,7 +136,9 @@ typedef enum { NA_BAD, // an address lookup failed NA_LOOPBACK, NA_BROADCAST, - NA_IP + NA_IP, + NA_IP6, + NA_UNSPEC } netadrtype_t; typedef enum { @@ -144,10 +146,12 @@ typedef enum { NS_SERVER } netsrc_t; +#define NET_ADDRSTRMAXLEN 48 // maximum length of an IPv6 address string including trailing '\0' typedef struct { netadrtype_t type; byte ip[4]; + byte ip6[16]; unsigned short port; } netadr_t; @@ -165,7 +169,8 @@ qboolean NET_CompareAdr (netadr_t a, netadr_t b); qboolean NET_CompareBaseAdr (netadr_t a, netadr_t b); qboolean NET_IsLocalAddress (netadr_t adr); const char *NET_AdrToString (netadr_t a); -qboolean NET_StringToAdr ( const char *s, netadr_t *a); +const char *NET_AdrToStringwPort (netadr_t a); +qboolean NET_StringToAdr ( const char *s, netadr_t *a, netadrtype_t family); qboolean NET_GetLoopPacket (netsrc_t sock, netadr_t *net_from, msg_t *net_message); void NET_Sleep(int msec); @@ -1015,7 +1020,7 @@ void Sys_SetErrorText( const char *text ); void Sys_SendPacket( int length, const void *data, netadr_t to ); qboolean Sys_GetPacket( netadr_t *net_from, msg_t *net_message ); -qboolean Sys_StringToAdr( const char *s, netadr_t *a ); +qboolean Sys_StringToAdr( const char *s, netadr_t *a, netadrtype_t family ); //Does NOT parse port numbers, only base addresses. qboolean Sys_IsLANAddress (netadr_t adr); -- cgit v1.2.3