--- /dev/null
+/*
+Copyright (C) 1996-1997 Id Software, Inc.
+
+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>
+
+#ifdef __sun__
+#include <sys/filio.h>
+#endif
+
+#ifdef NeXT
+#include <libc.h>
+#endif
+
+extern int gethostname (char *, int);
+extern int close (int);
+
+extern cvar_t hostname;
+
+static int net_acceptsocket = -1; // socket for fielding new connections
+static int net_controlsocket;
+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;
+
+ if (COM_CheckParm ("-noudp"))
+ 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 (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);
+ strcpy(my_tcpip_address, UDP_AddrToString (&addr));
+ colon = strrchr (my_tcpip_address, ':');
+ if (colon)
+ *colon = 0;
+
+ Con_Printf("UDP Initialized\n");
+ tcpipAvailable = true;
+
+ return net_controlsocket;
+}
+
+//=============================================================================
+
+void UDP_Shutdown (void)
+{
+ UDP_Listen (false);
+ UDP_CloseSocket (net_controlsocket);
+}
+
+//=============================================================================
+
+void UDP_Listen (qboolean state)
+{
+ // 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;
+ qboolean _true = true;
+
+ if ((newsocket = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1)
+ return -1;
+
+ if (ioctl (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:
+ close (newsocket);
+ return -1;
+}
+
+//=============================================================================
+
+int UDP_CloseSocket (int socket)
+{
+ if (socket == net_broadcastsocket)
+ net_broadcastsocket = 0;
+ return close (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;
+
+ 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 = atoi(b);
+ else
+ port = net_hostport;
+
+ hostaddr->sa_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)
+{
+ return 0;
+}
+
+//=============================================================================
+
+int UDP_CheckNewConnections (void)
+{
+ unsigned long available;
+
+ if (net_acceptsocket == -1)
+ return -1;
+
+ if (ioctl (net_acceptsocket, FIONREAD, &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)
+{
+ int addrlen = sizeof (struct qsockaddr);
+ int ret;
+
+ ret = recvfrom (socket, buf, len, 0, (struct sockaddr *)addr, &addrlen);
+ if (ret == -1 && (errno == EWOULDBLOCK || errno == ECONNREFUSED))
+ return 0;
+ return ret;
+}
+
+//=============================================================================
+
+int UDP_MakeSocketBroadcastCapable (int socket)
+{
+ int i = 1;
+
+ // 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;
+
+ 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;
+
+ 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;
+
+ 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;
+
+ sscanf(string, "%d.%d.%d.%d:%d", &ha1, &ha2, &ha3, &ha4, &hp);
+ ipaddr = (ha1 << 24) | (ha2 << 16) | (ha3 << 8) | ha4;
+
+ addr->sa_family = AF_INET;
+ ((struct sockaddr_in *)addr)->sin_addr.s_addr = htonl(ipaddr);
+ ((struct sockaddr_in *)addr)->sin_port = htons(hp);
+ return 0;
+}
+
+//=============================================================================
+
+unsigned long inet_addr(const char *cp);
+int UDP_GetSocketAddr (int socket, struct qsockaddr *addr)
+{
+ int addrlen = sizeof(struct qsockaddr);
+ unsigned int a;
+
+ 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;
+
+ hostentry = gethostbyaddr ((char *)&((struct sockaddr_in *)addr)->sin_addr, sizeof(struct in_addr), AF_INET);
+ if (hostentry)
+ {
+ strncpy (name, (char *)hostentry->h_name, NET_NAMELEN - 1);
+ return 0;
+ }
+
+ strcpy (name, UDP_AddrToString (addr));
+ return 0;
+}
+
+//=============================================================================
+
+int UDP_GetAddrFromName(char *name, struct qsockaddr *addr)
+{
+ struct hostent *hostentry;
+
+ if (name[0] >= '0' && name[0] <= '9')
+ return PartialIPAddress (name, addr);
+
+ hostentry = gethostbyname (name);
+ if (!hostentry)
+ return -1;
+
+ addr->sa_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)
+{
+ if (addr1->sa_family != addr2->sa_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)
+{
+ 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;
+}
+
+//=============================================================================
projects / xonotic / darkplaces.git / blobdiff