Part 2 of prior commit

1 files changed, 127 insertions, 0 deletions

diff --git a/tdm/backend/streams.c b/tdm/backend/streams.c
new file mode 100644
index 000000000..f60fb955e
--- /dev/null
+++ b/tdm/backend/streams.c
@@ -0,0 +1,127 @@
+/*
+
+Copyright 1988, 1998  The Open Group
+Copyright 2002,2004 Oswald Buddenhagen <[email protected]>
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of a copyright holder shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from the copyright holder.
+
+*/
+
+/*
+ * xdm - display manager daemon
+ * Author: Keith Packard, MIT X Consortium
+ *
+ * streams.c - Support for STREAMS
+ */
+
+#include "dm.h"
+
+#if defined(XDMCP) && defined(STREAMSCONN)
+
+#include "dm_error.h"
+
+#include <fcntl.h>
+#include <tiuser.h>
+#include <netconfig.h>
+#include <netdir.h>
+
+static int xdmcpFd = -1, c_request_port;
+
+void
+UpdateListenSockets( void )
+{
+	struct t_bind bind_addr;
+	struct netconfig *nconf;
+	struct nd_hostserv service;
+	struct nd_addrlist *servaddrs;
+	char bindbuf[15];
+	int it;
+
+	if (c_request_port == request_port)
+		return;
+	c_request_port = request_port;
+
+	if (xdmcpFd != -1) {
+		CloseNClearCloseOnFork( xdmcpFd );
+		UnregisterInput( xdmcpFd );
+		xdmcpFd = -1;
+	}
+
+	if (!request_port)
+		return;
+
+	Debug( "creating UDP stream %d\n", request_port );
+
+	nconf = getnetconfigent( "udp" );
+	if (!nconf) {
+		t_error( "getnetconfigent udp" );
+		return;
+	}
+
+	xdmcpFd = t_open( nconf->nc_device, O_RDWR, NULL );
+	if (xdmcpFd == -1) {
+		LogError( "XDMCP stream creation failed\n" );
+		t_error( "CreateWellKnownSockets(xdmcpFd): t_open failed" );
+		return;
+	}
+
+	service.h_host = HOST_SELF;
+	sprintf( bindbuf, "%d", request_port );
+	service.h_serv = bindbuf;
+	netdir_getbyname( nconf, &service, &servaddrs );
+	freenetconfigent( nconf );
+
+	bind_addr.qlen = 5;
+	bind_addr.addr.buf = servaddrs->n_addrs[0].buf;
+	bind_addr.addr.len = servaddrs->n_addrs[0].len;
+	bind_addr.addr.maxlen = servaddrs->n_addrs[0].len;
+	it = t_bind( xdmcpFd, &bind_addr, &bind_addr );
+	netdir_free( (char *)servaddrs, ND_ADDRLIST );
+	if (it < 0) {
+		LogError( "Error binding UDP port %d\n", request_port );
+		t_error( "CreateWellKnownSockets(xdmcpFd): t_bind failed" );
+		t_close( xdmcpFd );
+		xdmcpFd = -1;
+		return;
+	}
+	RegisterCloseOnFork( xdmcpFd );
+	RegisterInput( xdmcpFd );
+}
+
+int
+AnyListenSockets( void )
+{
+	return xdmcpFd != -1;
+}
+
+int
+ProcessRequestSockets( FD_TYPE *reads )
+{
+	if (xdmcpFd >= 0 && FD_ISSET( xdmcpFd, reads )) {
+		ProcessRequestSocket( xdmcpFd );
+		return 1;
+	}
+	return 0;
+}
+
+#endif /* STREAMSCONN && XDMCP */