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/*
* gxid version 0.3
*
* Copyright 1997 Owen Taylor <owt1@cornell.edu>
*/
#include "config.h"
#include "gxid_lib.h"
#ifdef XINPUT_GXI
#include <stdio.h>
#include <unistd.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
/* handles mechanics of communicating with a client */
static int
gxid_send_message(char *host, int port, GxidMessage *msg)
{
int socket_fd;
struct sockaddr_in sin;
int count;
GxidI32 retval;
struct hostent *he;
if (!port) port = 6951;
if (!host || strcmp(host,"localhost") )
{
/* looking it up as localhost can be _SLOW_ on ppp systems */
/* FIXME: Could localhost be anything other than loopback? */
host = "127.0.0.1";
}
he = gethostbyname(host);
if (!he)
{
fprintf(stderr,"gxid_lib: error looking up %s\n",host);
return GXID_RETURN_ERROR;
}
sin.sin_family = he->h_addrtype;
sin.sin_port = htons(port);
memcpy(&sin.sin_addr,he->h_addr_list[0],he->h_length);
socket_fd = socket(AF_INET,SOCK_STREAM,0);
if (socket_fd < 0)
{
fprintf(stderr,"gxid_lib: can't get socket");
return GXID_RETURN_ERROR;
}
if (connect(socket_fd, (struct sockaddr *)&sin,
sizeof sin) < 0)
{
fprintf(stderr,"gxid_lib: can't connect to %s:%d\n",host,port);
close(socket_fd);
return GXID_RETURN_ERROR;
}
count = write(socket_fd,(char *)msg,ntohl(msg->any.length));
if (count != ntohl(msg->any.length))
{
fprintf(stderr,"gxid_lib: error writing");
close(socket_fd);
return GXID_RETURN_ERROR;
}
/* now read the return code */
count = read(socket_fd,(char *)&retval,sizeof(GxidI32));
if (count != sizeof(GxidI32))
{
fprintf(stderr,"gxid_lib: error reading return code");
close(socket_fd);
return GXID_RETURN_ERROR;
}
close (socket_fd);
return ntohl(retval);
}
/* claim a device. If exclusive, device is claimed exclusively */
int
gxid_claim_device(char *host, int port, GxidU32 device, GxidU32 window,
int exclusive)
{
GxidClaimDevice msg;
msg.type = htonl(GXID_CLAIM_DEVICE);
msg.length = htonl(sizeof(GxidClaimDevice));
msg.device = htonl(device);
msg.window = htonl(window);
msg.exclusive = htonl(exclusive);
return gxid_send_message(host,port,(GxidMessage *)&msg);
}
/* release a device/window pair */
int
gxid_release_device(char *host, int port, GxidU32 device, GxidU32 window)
{
GxidReleaseDevice msg;
msg.type = htonl(GXID_RELEASE_DEVICE);
msg.length = htonl(sizeof(GxidReleaseDevice));
msg.device = htonl(device);
msg.window = htonl(window);
return gxid_send_message(host,port,(GxidMessage *)&msg);
}
#else /* !XINPUT_GXI */
/* Some compilers don't like empty source files */
int
gxid_claim_device(char *host, int port, GxidU32 device, GxidU32 window,
int exclusive)
{
return 0;
}
#endif /* XINPUT_GXI */
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