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127 lines
3.3 KiB
C
127 lines
3.3 KiB
C
/*
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Copyright 1988, 1998 The Open Group
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Copyright 2002,2004 Oswald Buddenhagen <ossi@kde.org>
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of a copyright holder shall
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not be used in advertising or otherwise to promote the sale, use or
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other dealings in this Software without prior written authorization
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from the copyright holder.
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*/
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/*
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* xdm - display manager daemon
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* Author: Keith Packard, MIT X Consortium
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*
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* streams.c - Support for STREAMS
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*/
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#include "dm.h"
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#if defined(XDMCP) && defined(STREAMSCONN)
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#include "dm_error.h"
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#include <fcntl.h>
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#include <tiuser.h>
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#include <netconfig.h>
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#include <netdir.h>
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static int xdmcpFd = -1, currentRequestPort;
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void
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updateListenSockets(void)
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{
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struct t_bind bind_addr;
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struct netconfig *nconf;
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struct nd_hostserv service;
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struct nd_addrlist *servaddrs;
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char bindbuf[15];
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int it;
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if (currentRequestPort == requestPort)
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return;
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currentRequestPort = requestPort;
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if (xdmcpFd != -1) {
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closeNclearCloseOnFork(xdmcpFd);
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unregisterInput(xdmcpFd);
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xdmcpFd = -1;
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}
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if (!requestPort)
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return;
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debug("creating UDP stream %d\n", requestPort);
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nconf = getnetconfigent("udp");
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if (!nconf) {
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t_error("getnetconfigent udp");
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return;
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}
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xdmcpFd = t_open(nconf->nc_device, O_RDWR, 0);
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if (xdmcpFd == -1) {
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logError("XDMCP stream creation failed\n");
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t_error("CreateWellKnownSockets(xdmcpFd): t_open failed");
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return;
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}
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service.h_host = HOST_SELF;
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sprintf(bindbuf, "%d", requestPort);
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service.h_serv = bindbuf;
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netdir_getbyname(nconf, &service, &servaddrs);
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freenetconfigent(nconf);
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bind_addr.qlen = 5;
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bind_addr.addr.buf = servaddrs->n_addrs[0].buf;
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bind_addr.addr.len = servaddrs->n_addrs[0].len;
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bind_addr.addr.maxlen = servaddrs->n_addrs[0].len;
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it = t_bind(xdmcpFd, &bind_addr, &bind_addr);
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netdir_free((char *)servaddrs, ND_ADDRLIST);
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if (it < 0) {
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logError("Error binding UDP port %d\n", requestPort);
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t_error("CreateWellKnownSockets(xdmcpFd): t_bind failed");
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t_close(xdmcpFd);
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xdmcpFd = -1;
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return;
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}
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registerCloseOnFork(xdmcpFd);
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registerInput(xdmcpFd);
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}
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int
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anyListenSockets(void)
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{
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return xdmcpFd != -1;
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}
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int
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processListenSockets(fd_set *reads)
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{
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if (xdmcpFd >= 0 && FD_ISSET(xdmcpFd, reads)) {
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processRequestSocket(xdmcpFd);
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return True;
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}
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return False;
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}
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#endif /* STREAMSCONN && XDMCP */
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