extern int trans_net(unsigned int clientaddr, unsigned int *addr, unsigned short *port)
{
t_elem const *curr;
t_trans *entry;
char temp1[32];
char temp2[32];
char temp3[32];
char temp4[32];
#ifdef DEBUG_TRANS
eventlog(eventlog_level_debug, __FUNCTION__, "checking %s for client %s ...",
addr_num_to_addr_str(*addr, *port),
addr_num_to_ip_str(clientaddr));
#endif
if (trans_head) {
LIST_TRAVERSE_CONST(trans_head, curr)
{
if (!(entry = (t_trans*)elem_get_data(curr))) {
eventlog(eventlog_level_error, __FUNCTION__, "found NULL entry in list");
continue;
}
#ifdef DEBUG_TRANS
eventlog(eventlog_level_debug, __FUNCTION__, "against entry -> %s output %s network %s",
addr_get_addr_str(entry->input, temp1, sizeof(temp1)),
addr_get_addr_str(entry->output, temp2, sizeof(temp2)),
netaddr_get_addr_str(entry->network, temp3, sizeof(temp3)));
#endif
if (addr_get_ip(entry->input) != *addr || addr_get_port(entry->input) != *port) {
#ifdef DEBUG_TRANS
eventlog(eventlog_level_debug, __FUNCTION__, "entry does match input address");
#endif
continue;
}
if (netaddr_contains_addr_num(entry->network, clientaddr) == 0) {
#ifdef DEBUG_TRANS
eventlog(eventlog_level_debug, __FUNCTION__, "client is not in the correct network");
#endif
continue;
}
#ifdef DEBUG_TRANS
eventlog(eventlog_level_debug, __FUNCTION__, "%s translated to %s",
addr_num_to_addr_str(*addr, *port),
addr_get_addr_str(entry->output, temp4, sizeof(temp4)));
#endif
*addr = addr_get_ip(entry->output);
*port = addr_get_port(entry->output);
return 1; /* match found in list */
}
}
#ifdef DEBUG_TRANS
eventlog(eventlog_level_debug, __FUNCTION__, "no match found for %s (not translated)",
addr_num_to_addr_str(*addr, *port));
#endif
return 0; /* no match found in list */
}
extern int tracker_set_servers(char const * servers)
{
t_addr const * addr;
t_elem const * curr;
char temp[32];
if (track_servers && addrlist_destroy(track_servers)<0)
eventlog(eventlog_level_error,__FUNCTION__,"unable to destroy tracker list");
if (!servers)
{
track_servers = NULL;
return 0;
}
if (!(track_servers = addrlist_create(servers,INADDR_LOOPBACK,BNETD_TRACK_PORT)))
{
eventlog(eventlog_level_error,__FUNCTION__,"could not create tracking server list");
return -1;
}
LIST_TRAVERSE_CONST(track_servers,curr)
{
addr = elem_get_data(curr);
if (!addr_get_addr_str(addr,temp,sizeof(temp)))
strcpy(temp,"x.x.x.x:x");
eventlog(eventlog_level_info,__FUNCTION__,"tracking packets will be sent to %s",temp);
}
extern int tracker_send_report(t_addrlist const * laddrs)
{
t_addr const * addrl;
t_elem const * currl;
t_addr const * addrt;
t_elem const * currt;
t_trackpacket packet;
struct utsname utsbuf;
struct sockaddr_in tempaddr;
t_laddr_info * laddr_info;
char tempa[64];
char tempb[64];
if (addrlist_get_length(track_servers)>0)
{
std::memset(&packet,0,sizeof(packet));
bn_short_nset(&packet.packet_version,(unsigned short)TRACK_VERSION);
/* packet.port is set below */
bn_int_nset(&packet.flags, 0);
std::strncpy((char *)packet.server_location,
prefs_get_location(),
sizeof(packet.server_location));
bn_byte_set(&packet.server_location[sizeof(packet.server_location)-1],'\0');
std::strncpy((char *)packet.software,
PVPGN_SOFTWARE,
sizeof(packet.software));
bn_byte_set(&packet.software[sizeof(packet.software)-1],'\0');
std::strncpy((char *)packet.version,
PVPGN_VERSION,
sizeof(packet.version));
bn_byte_set(&packet.version[sizeof(packet.version)-1],'\0');
std::strncpy((char *)packet.server_desc,
prefs_get_description(),
sizeof(packet.server_desc));
bn_byte_set(&packet.server_desc[sizeof(packet.server_desc)-1],'\0');
std::strncpy((char *)packet.server_url,
prefs_get_url(),
sizeof(packet.server_url));
bn_byte_set(&packet.server_url[sizeof(packet.server_url)-1],'\0');
std::strncpy((char *)packet.contact_name,
prefs_get_contact_name(),
sizeof(packet.contact_name));
bn_byte_set(&packet.contact_name[sizeof(packet.contact_name)-1],'\0');
std::strncpy((char *)packet.contact_email,
prefs_get_contact_email(),
sizeof(packet.contact_email));
bn_byte_set(&packet.contact_email[sizeof(packet.contact_email)-1],'\0');
bn_int_nset(&packet.users,connlist_login_get_length());
bn_int_nset(&packet.channels,channellist_get_length());
bn_int_nset(&packet.games,gamelist_get_length());
bn_int_nset(&packet.uptime,server_get_uptime());
bn_int_nset(&packet.total_logins,connlist_total_logins());
bn_int_nset(&packet.total_games,gamelist_total_games());
if (uname(&utsbuf)<0)
{
eventlog(eventlog_level_warn,__FUNCTION__,"could not get platform info (uname: %s)",pstrerror(errno));
std::strncpy((char *)packet.platform,"",sizeof(packet.platform));
}
else
{
std::strncpy((char *)packet.platform,
utsbuf.sysname,
sizeof(packet.platform));
bn_byte_set(&packet.platform[sizeof(packet.platform)-1],'\0');
}
LIST_TRAVERSE_CONST(laddrs,currl)
{
addrl = (t_addr*)elem_get_data(currl);
if (!(laddr_info = (t_laddr_info*)addr_get_data(addrl).p))
{
eventlog(eventlog_level_error,__FUNCTION__,"address data is NULL");
continue;
}
if (laddr_info->type!=laddr_type_bnet)
continue; /* don't report IRC, telnet, and other non-game ports */
bn_short_nset(&packet.port,addr_get_port(addrl));
LIST_TRAVERSE_CONST(track_servers,currt)
{
addrt = (t_addr*)elem_get_data(currt);
std::memset(&tempaddr,0,sizeof(tempaddr));
tempaddr.sin_family = PSOCK_AF_INET;
tempaddr.sin_port = htons(addr_get_port(addrt));
tempaddr.sin_addr.s_addr = htonl(addr_get_ip(addrt));
if (!addr_get_addr_str(addrl,tempa,sizeof(tempa)))
std::strcpy(tempa,"x.x.x.x:x");
if (!addr_get_addr_str(addrt,tempb,sizeof(tempb)))
std::strcpy(tempa,"x.x.x.x:x");
/* eventlog(eventlog_level_debug,__FUNCTION__,"sending tracking info from %s to %s",tempa,tempb); */
if (psock_sendto(laddr_info->usocket,&packet,sizeof(packet),0,(struct sockaddr *)&tempaddr,(psock_t_socklen)sizeof(tempaddr))<0)
eventlog(eventlog_level_warn,__FUNCTION__,"could not send tracking information from %s to %s (psock_sendto: %s)",tempa,tempb,pstrerror(errno));
}
extern void gametrans_net(unsigned int vaddr, unsigned short vport, unsigned int laddr, unsigned short lport, unsigned int * addr, unsigned short * port)
{
const t_elem *curr;
t_gametrans *entry;
#ifdef DEBUGGAMETRANS
char temp1[32];
char temp2[32];
char temp3[32];
char temp4[32];
#endif
#ifdef DEBUGGAMETRANS
eventlog(eventlog_level_debug,"gametrans_net","checking client %s (viewer on %s connected to %s)...",
addr_num_to_addr_str(*addr,*port),
addr_num_to_addr_str(vaddr,vport),
addr_num_to_addr_str(laddr,lport));
#else
(void)vport;
#endif
if (gametrans_head)
{
LIST_TRAVERSE_CONST(gametrans_head,curr)
{
if (!(entry = elem_get_data(curr)))
{
eventlog(eventlog_level_error,"gametrans_net","found NULL entry in list");
continue;
}
#ifdef DEBUGGAMETRANS
eventlog(eventlog_level_debug,"gametrans_net","against entry viewerint=%s client=%s output=%s viewerex=%s",
addr_get_addr_str(entry->viewer,temp1,sizeof(temp1)),
addr_get_addr_str(entry->client,temp2,sizeof(temp2)),
addr_get_addr_str(entry->output,temp3,sizeof(temp3)),
netaddr_get_addr_str(entry->exclude,temp4,sizeof(temp4)));
#endif
if (addr_get_ip(entry->viewer)!=0 && addr_get_ip(entry->viewer)!=laddr)
{
#ifdef DEBUGGAMETRANS
eventlog(eventlog_level_debug,"gametrans_net","viewer is not on right interface IP");
#endif
continue;
}
if (addr_get_port(entry->viewer)!=0 && addr_get_port(entry->viewer)!=lport)
{
#ifdef DEBUGGAMETRANS
eventlog(eventlog_level_debug,"gametrans_net","view is not on right interface port");
#endif
continue;
}
if (addr_get_ip(entry->client)!=0 && addr_get_ip(entry->client)!=*addr)
{
#ifdef DEBUGGAMETRANS
eventlog(eventlog_level_debug,"gametrans_net","client is not on the right IP");
#endif
continue;
}
if (addr_get_port(entry->client)!=0 && addr_get_port(entry->client)!=*port)
{
#ifdef DEBUGGAMETRANS
eventlog(eventlog_level_debug,"gametrans_net","client is not on the right port");
#endif
continue;
}
if (netaddr_contains_addr_num(entry->exclude,vaddr)==1)
{
#ifdef DEBUGGAMETRANS
eventlog(eventlog_level_debug,"gametrans_net","viewer is in the excluded network");
#endif
continue;
}
*addr = addr_get_ip(entry->output);
*port = addr_get_port(entry->output);
#ifdef DEBUGGAMETRANS
eventlog(eventlog_level_debug,"gametrans_net","did translation");
#endif
return;
}
}
}
static int sd_udpinput(t_addr *const curr_laddr, const t_laddr_info *laddr_info,
int ssocket, int usocket)
{
int err;
psock_t_socklen errlen;
t_packet * upacket;
if (laddr_info == NULL) {
(void)ssocket;
}
err = 0;
errlen = sizeof(err);
if (psock_getsockopt(usocket,PSOCK_SOL_SOCKET,PSOCK_SO_ERROR,&err,&errlen)<0)
{
eventlog(eventlog_level_error,"sd_udpinput","[%d] unable to read socket error (psock_getsockopt: %s)",usocket,strerror(psock_errno()));
return -1;
}
if (errlen && err) /* if it was an error, there is no packet to read */
{
eventlog(eventlog_level_error,"sd_udpinput","[%d] async UDP socket error notification (psock_getsockopt: %s)",usocket,strerror(err));
return -1;
}
if (!(upacket = packet_create(packet_class_udp)))
{
eventlog(eventlog_level_error,"sd_udpinput","could not allocate raw packet for input");
return -1;
}
{
struct sockaddr_in fromaddr;
psock_t_socklen fromlen;
int len;
fromlen = sizeof(fromaddr);
if ((len = psock_recvfrom(usocket,packet_get_raw_data_build(upacket,0),MAX_PACKET_SIZE,0,(struct sockaddr *)&fromaddr,&fromlen))<0)
{
if (
#ifdef PSOCK_EINTR
psock_errno()!=PSOCK_EINTR &&
#endif
#ifdef PSOCK_EAGAIN
psock_errno()!=PSOCK_EAGAIN &&
#endif
#ifdef PSOCK_EWOULDBLOCK
psock_errno()!=PSOCK_EWOULDBLOCK &&
#endif
1)
eventlog(eventlog_level_error,"sd_udpinput","could not recv UDP datagram (psock_recvfrom: %s)",strerror(psock_errno()));
packet_del_ref(upacket);
return -1;
}
if (fromaddr.sin_family!=PSOCK_AF_INET)
{
eventlog(eventlog_level_error,"sd_udpinput","got UDP datagram with bad address family %d",(int)fromaddr.sin_family);
packet_del_ref(upacket);
return -1;
}
packet_set_size(upacket,len);
if (hexstrm)
{
char tempa[32];
if (!addr_get_addr_str(curr_laddr,tempa,sizeof(tempa)))
strcpy(tempa,"x.x.x.x:x");
fprintf(hexstrm,"%d: recv class=%s[0x%02x] type=%s[0x%04x] from=%s to=%s length=%u\n",
usocket,
packet_get_class_str(upacket),(unsigned int)packet_get_class(upacket),
packet_get_type_str(upacket,packet_dir_from_client),packet_get_type(upacket),
addr_num_to_addr_str(ntohl(fromaddr.sin_addr.s_addr),ntohs(fromaddr.sin_port)),
tempa,
packet_get_size(upacket));
hexdump(hexstrm,packet_get_raw_data(upacket,0),packet_get_size(upacket));
}
handle_udp_packet(usocket,ntohl(fromaddr.sin_addr.s_addr),ntohs(fromaddr.sin_port),upacket);
packet_del_ref(upacket);
}
return 0;
}
static int sd_accept(t_addr const * curr_laddr, t_laddr_info const * laddr_info, int ssocket, int usocket)
{
char tempa[32];
int csocket;
struct sockaddr_in caddr;
psock_t_socklen caddr_len;
unsigned int raddr;
unsigned short rport;
if (!addr_get_addr_str(curr_laddr,tempa,sizeof(tempa)))
strcpy(tempa,"x.x.x.x:x");
/* accept the connection */
memset(&caddr,0,sizeof(caddr)); /* not sure if this is needed... modern systems are ok anyway */
caddr_len = sizeof(caddr);
if ((csocket = psock_accept(ssocket,(struct sockaddr *)&caddr,&caddr_len))<0)
{
/* BSD, POSIX error for aborted connections, SYSV often uses EAGAIN or EPROTO */
if (
#ifdef PSOCK_EWOULDBLOCK
psock_errno()==PSOCK_EWOULDBLOCK ||
#endif
#ifdef PSOCK_ECONNABORTED
psock_errno()==PSOCK_ECONNABORTED ||
#endif
#ifdef PSOCK_EPROTO
psock_errno()==PSOCK_EPROTO ||
#endif
0)
eventlog(eventlog_level_error,"sd_accept","client aborted connection on %s (psock_accept: %s)",tempa,strerror(psock_errno()));
else /* EAGAIN can mean out of resources _or_ connection aborted :( */
if (
#ifdef PSOCK_EINTR
psock_errno()!=PSOCK_EINTR &&
#endif
1)
eventlog(eventlog_level_error,"sd_accept","could not accept new connection on %s (psock_accept: %s)",tempa,strerror(psock_errno()));
return -1;
}
#ifdef HAVE_POLL
if (csocket>=BNETD_MAX_SOCKETS) /* This check is a bit too strict (csocket is probably
* greater than the number of connections) but this makes
* life easier later.
*/
{
eventlog(eventlog_level_error,"sd_accept","csocket is beyond range allowed by BNETD_MAX_SOCKETS for poll() (%d>=%d)",csocket,BNETD_MAX_SOCKETS);
psock_close(csocket);
return -1;
}
#else
# ifdef FD_SETSIZE
if (csocket>=FD_SETSIZE) /* fd_set size is determined at compile time */
{
eventlog(eventlog_level_error,"sd_accept","csocket is beyond range allowed by FD_SETSIZE for select() (%d>=%d)",csocket,FD_SETSIZE);
psock_close(csocket);
return -1;
}
# endif
#endif
if (ipbanlist_check(inet_ntoa(caddr.sin_addr))!=0)
{
eventlog(eventlog_level_info,"sd_accept","[%d] connection from banned address %s denied (closing connection)",csocket,inet_ntoa(caddr.sin_addr));
psock_close(csocket);
return -1;
}
eventlog(eventlog_level_info,"sd_accept","[%d] accepted connection from %s on %s",csocket,addr_num_to_addr_str(ntohl(caddr.sin_addr.s_addr),ntohs(caddr.sin_port)),tempa);
if (prefs_get_use_keepalive())
{
int val=1;
if (psock_setsockopt(csocket,PSOCK_SOL_SOCKET,PSOCK_SO_KEEPALIVE,&val,(psock_t_socklen)sizeof(val))<0)
eventlog(eventlog_level_error,"sd_accept","[%d] could not set socket option SO_KEEPALIVE (psock_setsockopt: %s)",csocket,strerror(psock_errno()));
/* not a fatal error */
}
{
struct sockaddr_in rsaddr;
psock_t_socklen rlen;
memset(&rsaddr,0,sizeof(rsaddr)); /* not sure if this is needed... modern systems are ok anyway */
rlen = sizeof(rsaddr);
if (psock_getsockname(csocket,(struct sockaddr *)&rsaddr,&rlen)<0)
{
eventlog(eventlog_level_error,"sd_accept","[%d] unable to determine real local port (psock_getsockname: %s)",csocket,strerror(psock_errno()));
/* not a fatal error */
raddr = addr_get_ip(curr_laddr);
rport = addr_get_port(curr_laddr);
}
else
{
if (rsaddr.sin_family!=PSOCK_AF_INET)
{
eventlog(eventlog_level_error,"sd_accept","local address returned with bad address family %d",(int)rsaddr.sin_family);
/* not a fatal error */
raddr = addr_get_ip(curr_laddr);
rport = addr_get_port(curr_laddr);
}
else
{
raddr = ntohl(rsaddr.sin_addr.s_addr);
rport = ntohs(rsaddr.sin_port);
}
}
}
if (psock_ctl(csocket,PSOCK_NONBLOCK)<0)
{
eventlog(eventlog_level_error,"sd_accept","[%d] could not set TCP socket to non-blocking mode (closing connection) (psock_ctl: %s)",csocket,strerror(psock_errno()));
psock_close(csocket);
return -1;
}
{
t_connection * c;
if (!(c = conn_create(csocket,usocket,raddr,rport,addr_get_ip(curr_laddr),addr_get_port(curr_laddr),ntohl(caddr.sin_addr.s_addr),ntohs(caddr.sin_port))))
{
eventlog(eventlog_level_error,"sd_accept","[%d] unable to create new connection (closing connection)",csocket);
psock_close(csocket);
return -1;
}
eventlog(eventlog_level_debug,"sd_accept","[%d] client connected to a %s listening address",csocket,laddr_type_get_str(laddr_info->type));
switch (laddr_info->type)
{
case laddr_type_irc:
conn_set_class(c,conn_class_irc);
conn_set_state(c,conn_state_connected);
break;
case laddr_type_telnet:
conn_set_class(c,conn_class_telnet);
conn_set_state(c,conn_state_connected);
break;
case laddr_type_bnet:
default:
/* We have to wait for an initial "magic" byte on bnet connections to
* tell us exactly what connection class we are dealing with.
*/
break;
}
}
return 0;
}