/* * gxid version 0.3 * * Copyright 1997 Owen Taylor */ #include "config.h" #include "gxid_lib.h" #ifdef XINPUT_GXI #include #include #include #include #include #include #include /* 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 */