mirror of
https://git.code.sf.net/p/quake/quakeforge-old
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forgot to add it with the IPv6 patch from Pontus
This commit is contained in:
Nelson Rush
parent
7560771b16
commit
48e4cc464e
1 changed files with 414 additions and 0 deletions
414
qw_common/net_udp6.c
Normal file
414
qw_common/net_udp6.c
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/*
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Copyright (C) 1996-1997 Id Software, Inc.
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Portions Copyright (C) 1999,2000 Nelson Rush.
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Portions Copyright (C) 2000 Marcus Sundberg [mackan@stacken.kth.se]
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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// net_udp.c
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#include "quakedef.h"
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#include <stdio.h>
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#include <errno.h>
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/* Sun's model_t in sys/model.h conflicts w/ Quake's model_t */
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#define model_t quakeforgemodel_t
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#include <unistd.h>
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#include <sys/types.h>
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#ifdef HAVE_SYS_IOCTL_H
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# include <sys/ioctl.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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# include <sys/socket.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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# include <netinet/in.h>
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#endif
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#ifdef HAVE_NETDB_H
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# include <netdb.h>
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#endif
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#ifdef HAVE_ARPA_INET_H
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# include <arpa/inet.h>
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#endif
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#ifdef HAVE_SYS_FILIO_H
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# include <sys/filio.h>
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#endif
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#undef model_t
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#ifdef _WIN32
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# include "winquake.h"
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# undef EWOULDBLOCK
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# define EWOULDBLOCK WSAEWOULDBLOCK
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#endif
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#ifdef NeXT
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#include <libc.h>
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#endif
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#ifndef MAXHOSTNAMELEN
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#define MAXHOSTNAMELEN 512
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#endif
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netadr_t net_local_adr;
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netadr_t net_from;
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sizebuf_t net_message;
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int net_socket;
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#define MAX_UDP_PACKET (MAX_MSGLEN*2)
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byte net_message_buffer[MAX_UDP_PACKET];
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#ifdef _WIN32
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WSADATA winsockdata;
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#endif
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//=============================================================================
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void NetadrToSockadr (netadr_t *a, struct sockaddr_in6 *s)
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{
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memset (s, 0, sizeof(*s));
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s->sin6_family = AF_INET6;
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s->sin6_addr.in6_u.u6_addr32[0] = a->ip[0];
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s->sin6_addr.in6_u.u6_addr32[1] = a->ip[1];
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s->sin6_addr.in6_u.u6_addr32[2] = a->ip[2];
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s->sin6_addr.in6_u.u6_addr32[3] = a->ip[3];
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s->sin6_port = a->port;
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}
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void SockadrToNetadr (struct sockaddr_in6 *s, netadr_t *a)
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{
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a->ip[0] = s->sin6_addr.in6_u.u6_addr32[0];
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a->ip[1] = s->sin6_addr.in6_u.u6_addr32[1];
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a->ip[2] = s->sin6_addr.in6_u.u6_addr32[2];
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a->ip[3] = s->sin6_addr.in6_u.u6_addr32[3];
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a->port = s->sin6_port;
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}
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qboolean NET_CompareBaseAdr (netadr_t a, netadr_t b)
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{
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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])
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return true;
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return false;
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}
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qboolean NET_CompareAdr (netadr_t a, netadr_t b)
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{
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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)
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return true;
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return false;
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}
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char *NET_AdrToString (netadr_t a)
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{
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static char s[64];
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unsigned short *addr16=(unsigned short *) &(a.ip);
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snprintf(s, sizeof(s), "%x:%x:%x:%x:%x:%x:%x:%x.%x", ntohs(addr16[0]), ntohs(addr16[1]), ntohs(addr16[2]), ntohs(addr16[3]),ntohs(addr16[4]), ntohs(addr16[5]), ntohs(addr16[6]), ntohs(addr16[7]), ntohs(a.port));
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return s;
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}
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char *NET_BaseAdrToString (netadr_t a)
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{
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static char s[64];
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unsigned short *addr16=(unsigned short *) &(a.ip);
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snprintf(s, sizeof(s), "%x:%x:%x:%x:%x:%x:%x:%x", ntohs(addr16[0]), ntohs(addr16[1]), ntohs(addr16[2]), ntohs(addr16[3]),ntohs(addr16[4]), ntohs(addr16[5]), ntohs(addr16[6]), ntohs(addr16[7]));
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return s;
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}
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/*
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=============
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NET_StringToAdr
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idnewt
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idnewt:28000
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192.246.40.70
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192.246.40.70:28000
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=============
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*/
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qboolean NET_StringToAdr (char *s, netadr_t *a)
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{
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struct addrinfo hints;
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struct addrinfo *resultp;
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char *space;
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char *ports=NULL;
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char copy[128];
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int err;
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bzero(&hints,sizeof(hints));
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hints.ai_socktype=SOCK_DGRAM;
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hints.ai_family=PF_INET6;
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strcpy(copy,s);
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for (space=copy; *space; space++) {
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if (*space==' ')
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{
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*space=0;
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ports=space+1;
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}
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}
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if ((err=getaddrinfo(copy,ports,&hints,&resultp)))
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{
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// Error
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Sys_Error ("NET_StringToAdr: string %s: %s",s, gai_strerror(err));
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return 0;
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}
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SockadrToNetadr ((struct sockaddr_in6 *) resultp->ai_addr, a);
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return true;
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}
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// Returns true if we can't bind the address locally--in other words,
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// the IP is NOT one of our interfaces.
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qboolean NET_IsClientLegal(netadr_t *adr)
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{
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#if 0
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struct sockaddr_in sadr;
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int newsocket;
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if (adr->ip[0] == 127)
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return false; // no local connections period
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NetadrToSockadr (adr, &sadr);
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if ((newsocket = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1)
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Sys_Error ("NET_IsClientLegal: socket: %s", strerror(errno));
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sadr.sin_port = 0;
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if( bind (newsocket, (void *)&sadr, sizeof(sadr)) == -1)
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{
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// It is not a local address
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close(newsocket);
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return true;
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}
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close(newsocket);
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return false;
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#else
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return true;
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#endif
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}
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//=============================================================================
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qboolean NET_GetPacket (void)
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{
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int ret;
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struct sockaddr_in6 from;
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unsigned int fromlen;
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fromlen = sizeof(from);
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ret = recvfrom(net_socket, (void*)net_message_buffer, sizeof(net_message_buffer), 0, (struct sockaddr *)&from, &fromlen);
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SockadrToNetadr (&from, &net_from);
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if (ret == -1) {
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#ifdef _WIN32
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int err = WSAGetLastError();
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if (err == WSAEMSGSIZE) {
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Con_Printf ("Warning: Oversize packet from %s\n",
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NET_AdrToString (net_from));
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return false;
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}
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#else /* _WIN32 */
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int err = errno;
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if (err == ECONNREFUSED)
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return false;
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#endif /* _WIN32 */
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if (err == EWOULDBLOCK)
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return false;
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Sys_Printf ("NET_GetPacket: %s\n", strerror(err));
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return false;
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}
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net_message.cursize = ret;
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if (ret == sizeof(net_message_buffer)) {
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Con_Printf ("Oversize packet from %s\n",
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NET_AdrToString (net_from));
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return false;
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}
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return ret;
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}
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//=============================================================================
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void NET_SendPacket (int length, void *data, netadr_t to)
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{
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int ret;
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struct sockaddr_in6 addr;
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NetadrToSockadr (&to, &addr);
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ret = sendto (net_socket, data, length, 0, (struct sockaddr *)&addr, sizeof(addr) );
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if (ret == -1) {
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#ifdef _WIN32
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int err = WSAGetLastError();
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#ifndef SERVERONLY
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if (err == WSAEADDRNOTAVAIL)
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Con_DPrintf("NET_SendPacket Warning: %i\n", err);
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#endif
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#else /* _WIN32 */
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int err = errno;
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if (err == ECONNREFUSED)
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return;
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#endif /* _WIN32 */
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if (err == EWOULDBLOCK)
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return;
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Sys_Printf ("NET_SendPacket: %s\n", strerror(err));
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}
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}
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//=============================================================================
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int UDP_OpenSocket (int port)
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{
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int err;
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int newsocket;
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struct sockaddr_in6 address;
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struct addrinfo hints;
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struct addrinfo *resultp;
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#ifdef _WIN32
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#define ioctl ioctlsocket
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unsigned long _true = true;
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#else
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int _true = 1;
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#endif
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int i;
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if ((newsocket = socket (PF_INET6, SOCK_DGRAM, IPPROTO_UDP)) == -1)
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Sys_Error ("UDP_OpenSocket: socket: %s", strerror(errno));
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if (ioctl (newsocket, FIONBIO, &_true) == -1)
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Sys_Error ("UDP_OpenSocket: ioctl FIONBIO: %s", strerror(errno));
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address.sin6_family = AF_INET6;
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//ZOID -- check for interface binding option
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if ((i = COM_CheckParm("-ip")) != 0 && i < com_argc) {
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bzero(&hints,sizeof(hints));
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hints.ai_socktype=SOCK_DGRAM;
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hints.ai_family=PF_INET6;
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if ((err=getaddrinfo(com_argv[i+1],NULL,&hints,&resultp)))
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{
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Sys_Error ("UDP_OpenSocket: addr %s: %s",com_argv[i+1], gai_strerror(err));
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}
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memcpy((void *) &address,(void *) resultp->ai_addr,sizeof(address));
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// address.sin_addr.s_addr = inet_addr(com_argv[i+1]);
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// Con_Printf("Binding to IP Interface Address of %s\n",
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// inet_ntop(address.sin6_addr));
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} else
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address.sin6_addr = in6addr_any;
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if (port == PORT_ANY)
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address.sin6_port = 0;
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else
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address.sin6_port = htons((unsigned short)port);
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if( bind (newsocket, (void *)&address, sizeof(address)) == -1)
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Sys_Error ("UDP_OpenSocket: bind: %s", strerror(errno));
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return newsocket;
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}
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void NET_GetLocalAddress (void)
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{
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char buff[MAXHOSTNAMELEN];
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struct sockaddr_in6 address;
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unsigned int namelen;
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if (gethostname(buff, MAXHOSTNAMELEN) == -1)
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Sys_Error ("Net_GetLocalAddress: gethostname: %s", strerror(errno));
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buff[MAXHOSTNAMELEN-1] = 0;
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NET_StringToAdr (buff, &net_local_adr);
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namelen = sizeof(address);
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if (getsockname (net_socket, (struct sockaddr *)&address, &namelen) == -1)
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Sys_Error ("NET_GetLocalAddress: getsockname: %s", strerror(errno));
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net_local_adr.port = address.sin6_port;
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Con_Printf("IP address %s\n", NET_AdrToString (net_local_adr) );
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}
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/*
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====================
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NET_Init
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====================
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*/
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void NET_Init (int port)
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{
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#ifdef _WIN32
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WORD wVersionRequested;
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int r;
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wVersionRequested = MAKEWORD(1, 1);
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r = WSAStartup(MAKEWORD(1, 1), &winsockdata);
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if (r)
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Sys_Error ("Winsock initialization failed.");
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#endif /* _WIN32 */
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//
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// open the single socket to be used for all communications
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//
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net_socket = UDP_OpenSocket (port);
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//
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// init the message buffer
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//
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net_message.maxsize = sizeof(net_message_buffer);
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net_message.data = net_message_buffer;
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//
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// determine my name & address
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//
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NET_GetLocalAddress ();
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Con_Printf("UDP Initialized\n");
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}
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/*
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====================
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NET_Shutdown
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====================
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*/
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void NET_Shutdown (void)
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{
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#ifdef _WIN32
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closesocket(net_socket);
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WSACleanup();
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#else
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close(net_socket);
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#endif
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}
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