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- /*
- Copyright (C) 2000 Peter McGavin.
-
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License
- as published by the Free Software Foundation; either version 2
- of the License, or (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-
- See the GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- */
- // net_udp.c
-
- #include "quakedef.h"
-
- #include <sys/types.h>
- #include <sys/socket.h>
- #include <netinet/in.h>
- #include <netdb.h>
- #include <sys/param.h>
- #include <sys/ioctl.h>
- #include <errno.h>
-
- #include <exec/exec.h>
- #ifdef __PPC__
- #if defined(__STORM__) || defined(__VBCC__)
- #include <clib/exec_protos.h>
- #else
- #include <proto/exec.h>
- #endif
- #include <clib/socket_protos.h>
- #else
- #include <proto/exec.h>
- #include <proto/socket.h>
- #endif
-
- extern void I_Error (char *error, ...);
- extern cvar_t hostname;
-
- struct Library *SocketBase = NULL;
-
- static int net_acceptsocket = -1; // socket for fielding new connections
- static int net_controlsocket = -1;
- static int net_broadcastsocket = 0;
- static struct qsockaddr broadcastaddr;
-
- static unsigned long myAddr;
-
- #include "net_udp.h"
-
- //=============================================================================
-
- int UDP_Init (void)
- {
- struct hostent *local;
- char buff[MAXHOSTNAMELEN];
- struct qsockaddr addr;
- char *colon;
-
- // Con_Printf ("UDP_Init()\n");
- if (COM_CheckParm ("-noudp"))
- return -1;
-
- if ((SocketBase = OpenLibrary ("bsdsocket.library", 0)) == NULL) {
- Con_Printf ("OpenLibrary(\"bsdsocket.library\") failed, no networking available\n");
- return -1;
- }
-
- // determine my name & address
- gethostname(buff, MAXHOSTNAMELEN);
- local = gethostbyname(buff);
- myAddr = *(int *)local->h_addr_list[0];
-
- // if the quake hostname isn't set, set it to the machine name
- if (Q_strcmp(hostname.string, "UNNAMED") == 0)
- {
- buff[15] = 0;
- Cvar_Set ("hostname", buff);
- }
-
- if ((net_controlsocket = UDP_OpenSocket (0)) == -1)
- Sys_Error("UDP_Init: Unable to open control socket\n");
-
- ((struct sockaddr_in *)&broadcastaddr)->sin_family = AF_INET;
- ((struct sockaddr_in *)&broadcastaddr)->sin_addr.s_addr = INADDR_BROADCAST;
- ((struct sockaddr_in *)&broadcastaddr)->sin_port = htons(net_hostport);
-
- UDP_GetSocketAddr (net_controlsocket, &addr);
- Q_strcpy(my_tcpip_address, UDP_AddrToString (&addr));
- colon = Q_strrchr (my_tcpip_address, ':');
- if (colon)
- *colon = 0;
-
- Con_Printf("UDP Initialized\n");
- tcpipAvailable = true;
-
- return net_controlsocket;
- }
-
- //=============================================================================
-
- void UDP_Shutdown (void)
- {
- // Con_Printf ("UDP_Shutdown()\n");
- if (SocketBase != NULL) {
- UDP_Listen (false);
- if (net_controlsocket != -1) {
- UDP_CloseSocket (net_controlsocket);
- net_controlsocket = -1;
- }
- CloseLibrary (SocketBase);
- SocketBase = NULL;
- }
- }
-
- //=============================================================================
-
- void UDP_Listen (qboolean state)
- {
- // Con_Printf ("UDP_Listen()\n");
- // enable listening
- if (state)
- {
- if (net_acceptsocket != -1)
- return;
- if ((net_acceptsocket = UDP_OpenSocket (net_hostport)) == -1)
- Sys_Error ("UDP_Listen: Unable to open accept socket\n");
- return;
- }
-
- // disable listening
- if (net_acceptsocket == -1)
- return;
- UDP_CloseSocket (net_acceptsocket);
- net_acceptsocket = -1;
- }
-
- //=============================================================================
-
- int UDP_OpenSocket (int port)
- {
- int newsocket;
- struct sockaddr_in address;
- long _true = true;
-
- // Con_Printf ("UDP_OpenSocket()\n");
- if ((newsocket = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1)
- return -1;
-
- if (IoctlSocket (newsocket, FIONBIO, (char *)&_true) == -1)
- goto ErrorReturn;
-
- address.sin_family = AF_INET;
- address.sin_addr.s_addr = INADDR_ANY;
- address.sin_port = htons(port);
- if( bind (newsocket, (void *)&address, sizeof(address)) == -1)
- goto ErrorReturn;
-
- return newsocket;
-
- ErrorReturn:
- CloseSocket (newsocket);
- return -1;
- }
-
- //=============================================================================
-
- int UDP_CloseSocket (int socket)
- {
- // Con_Printf ("UDP_CloseSocket()\n");
- if (socket == net_broadcastsocket)
- net_broadcastsocket = 0;
- return CloseSocket (socket);
- }
-
-
- //=============================================================================
- /*
- ============
- PartialIPAddress
-
- this lets you type only as much of the net address as required, using
- the local network components to fill in the rest
- ============
- */
- static int PartialIPAddress (char *in, struct qsockaddr *hostaddr)
- {
- char buff[256];
- char *b;
- int addr;
- int num;
- int mask;
- int run;
- int port;
-
- // Con_Printf ("UDP_PartialIPAddress()\n");
- buff[0] = '.';
- b = buff;
- strcpy(buff+1, in);
- if (buff[1] == '.')
- b++;
-
- addr = 0;
- mask=-1;
- while (*b == '.')
- {
- b++;
- num = 0;
- run = 0;
- while (!( *b < '0' || *b > '9'))
- {
- num = num*10 + *b++ - '0';
- if (++run > 3)
- return -1;
- }
- if ((*b < '0' || *b > '9') && *b != '.' && *b != ':' && *b != 0)
- return -1;
- if (num < 0 || num > 255)
- return -1;
- mask<<=8;
- addr = (addr<<8) + num;
- }
-
- if (*b++ == ':')
- port = Q_atoi(b);
- else
- port = net_hostport;
-
- ((struct sockaddr_in *)hostaddr)->sin_family = AF_INET;
- ((struct sockaddr_in *)hostaddr)->sin_port = htons((short)port);
- ((struct sockaddr_in *)hostaddr)->sin_addr.s_addr = (myAddr & htonl(mask)) | htonl(addr);
-
- return 0;
- }
- //=============================================================================
-
- int UDP_Connect (int socket, struct qsockaddr *addr)
- {
- // Con_Printf ("UDP_Connect()\n");
- return 0;
- }
-
- //=============================================================================
-
- int UDP_CheckNewConnections (void)
- {
- long available;
-
- // Con_Printf ("UDP_CheckNewConnections()\n");
- if (net_acceptsocket == -1)
- return -1;
-
- if (IoctlSocket (net_acceptsocket, FIONREAD, (char *)&available) == -1)
- Sys_Error ("UDP: ioctlsocket (FIONREAD) failed\n");
- if (available)
- return net_acceptsocket;
- return -1;
- }
-
- //=============================================================================
-
- int UDP_Read (int socket, byte *buf, int len, struct qsockaddr *addr)
- {
- LONG addrlen = sizeof (struct qsockaddr);
- int ret;
- long err;
-
- // Con_Printf ("UDP_Read()\n");
- ret = recvfrom (socket, buf, len, 0, (struct sockaddr *)addr, &addrlen);
- err = Errno();
- if (ret == -1 && (err == EWOULDBLOCK || err == ECONNREFUSED))
- return 0;
- return ret;
- }
-
- //=============================================================================
-
- int UDP_MakeSocketBroadcastCapable (int socket)
- {
- int i = 1;
-
- // Con_Printf ("UDP_MakeSocketBroadcastCapable()\n");
- // make this socket broadcast capable
- if (setsockopt(socket, SOL_SOCKET, SO_BROADCAST, (char *)&i, sizeof(i)) < 0)
- return -1;
- net_broadcastsocket = socket;
-
- return 0;
- }
-
- //=============================================================================
-
- int UDP_Broadcast (int socket, byte *buf, int len)
- {
- int ret;
-
- // Con_Printf ("UDP_Broadcast()\n");
- if (socket != net_broadcastsocket)
- {
- if (net_broadcastsocket != 0)
- Sys_Error("Attempted to use multiple broadcasts sockets\n");
- ret = UDP_MakeSocketBroadcastCapable (socket);
- if (ret == -1)
- {
- Con_Printf("Unable to make socket broadcast capable\n");
- return ret;
- }
- }
-
- return UDP_Write (socket, buf, len, &broadcastaddr);
- }
-
- //=============================================================================
-
- int UDP_Write (int socket, byte *buf, int len, struct qsockaddr *addr)
- {
- int ret;
-
- // Con_Printf ("UDP_Write()\n");
- ret = sendto (socket, buf, len, 0, (struct sockaddr *)addr, sizeof(struct qsockaddr));
- if (ret == -1 && Errno() == EWOULDBLOCK)
- return 0;
- return ret;
- }
-
- //=============================================================================
-
- char *UDP_AddrToString (struct qsockaddr *addr)
- {
- static char buffer[22];
- int haddr;
-
- // Con_Printf ("UDP_AddrToString()\n");
- haddr = ntohl(((struct sockaddr_in *)addr)->sin_addr.s_addr);
- sprintf(buffer, "%d.%d.%d.%d:%d", (haddr >> 24) & 0xff,
- (haddr >> 16) & 0xff, (haddr >> 8) & 0xff, haddr & 0xff,
- ntohs(((struct sockaddr_in *)addr)->sin_port));
- return buffer;
- }
-
- //=============================================================================
-
- int UDP_StringToAddr (char *string, struct qsockaddr *addr)
- {
- int ha1, ha2, ha3, ha4, hp;
- int ipaddr;
-
- // Con_Printf ("UDP_StringToAddr()\n");
- sscanf(string, "%d.%d.%d.%d:%d", &ha1, &ha2, &ha3, &ha4, &hp);
- ipaddr = (ha1 << 24) | (ha2 << 16) | (ha3 << 8) | ha4;
-
- ((struct sockaddr_in *)addr)->sin_family = AF_INET;
- ((struct sockaddr_in *)addr)->sin_addr.s_addr = htonl(ipaddr);
- ((struct sockaddr_in *)addr)->sin_port = htons(hp);
- return 0;
- }
-
- //=============================================================================
-
- int UDP_GetSocketAddr (int socket, struct qsockaddr *addr)
- {
- LONG addrlen = sizeof(struct qsockaddr);
- unsigned int a;
-
- // Con_Printf ("UDP_GetSocketAddr()\n");
- Q_memset(addr, 0, sizeof(struct qsockaddr));
- getsockname(socket, (struct sockaddr *)addr, &addrlen);
- a = ((struct sockaddr_in *)addr)->sin_addr.s_addr;
- if (a == 0 || a == inet_addr("127.0.0.1"))
- ((struct sockaddr_in *)addr)->sin_addr.s_addr = myAddr;
-
- return 0;
- }
-
- //=============================================================================
-
- int UDP_GetNameFromAddr (struct qsockaddr *addr, char *name)
- {
- struct hostent *hostentry;
-
- // Con_Printf ("UDP_GetNameFromAddr()\n");
- hostentry = gethostbyaddr ((char *)&((struct sockaddr_in *)addr)->sin_addr, sizeof(struct in_addr), AF_INET);
- if (hostentry)
- {
- Q_strncpy (name, (char *)hostentry->h_name, NET_NAMELEN - 1);
- return 0;
- }
-
- Q_strcpy (name, UDP_AddrToString (addr));
- return 0;
- }
-
- //=============================================================================
-
- int UDP_GetAddrFromName(char *name, struct qsockaddr *addr)
- {
- struct hostent *hostentry;
-
- // Con_Printf ("UDP_GetAddrFromName()\n");
- if (name[0] >= '0' && name[0] <= '9')
- return PartialIPAddress (name, addr);
-
- hostentry = gethostbyname (name);
- if (!hostentry)
- return -1;
-
- ((struct sockaddr_in *)addr)->sin_family = AF_INET;
- ((struct sockaddr_in *)addr)->sin_port = htons(net_hostport);
- ((struct sockaddr_in *)addr)->sin_addr.s_addr = *(int *)hostentry->h_addr_list[0];
-
- return 0;
- }
-
- //=============================================================================
-
- int UDP_AddrCompare (struct qsockaddr *addr1, struct qsockaddr *addr2)
- {
- // Con_Printf ("UDP_AddrCompare()\n");
-
- if (((struct sockaddr_in *)addr1)->sin_family !=
- ((struct sockaddr_in *)addr2)->sin_family)
- return -1;
-
- if (((struct sockaddr_in *)addr1)->sin_addr.s_addr !=
- ((struct sockaddr_in *)addr2)->sin_addr.s_addr)
- return -1;
-
- if (((struct sockaddr_in *)addr1)->sin_port !=
- ((struct sockaddr_in *)addr2)->sin_port)
- return 1;
-
- return 0;
- }
-
- //=============================================================================
-
- int UDP_GetSocketPort (struct qsockaddr *addr)
- {
- // Con_Printf ("UDP_GetSocketPort()\n");
- return ntohs(((struct sockaddr_in *)addr)->sin_port);
- }
-
-
- int UDP_SetSocketPort (struct qsockaddr *addr, int port)
- {
- ((struct sockaddr_in *)addr)->sin_port = htons(port);
- return 0;
- }
-
- /**********************************************************************/
-
- #ifdef __SASC
- void _STD_UDP_Shutdown (void)
- {
- // Con_Printf ("_STD_UDP_Shutdown()\n");
- UDP_Shutdown ();
- }
- #endif
-
- /**********************************************************************/
- #ifdef __STORM__
- void EXIT_9_UDP_Shutdown (void)
- {
- // Con_Printf ("EXIT_9_UDP_Shutdown()\n");
- UDP_Shutdown ();
- }
- #endif
-
- /**********************************************************************/
- #ifdef __VBCC__
- void _EXIT_9_UDP_Shutdown (void)
- {
- // Con_Printf ("_EXIT_9_UDP_Shutdown()\n");
- UDP_Shutdown ();
- }
- #endif
-
- /**********************************************************************/
-