Initial import of the CDE 2.1.30 sources from the Open Group.

cde/programs/dtlogin/protodpy.c

@@ -0,0 +1,145 @@
+/*                                                                      *
+ * (c) Copyright 1993, 1994 Hewlett-Packard Company                     *
+ * (c) Copyright 1993, 1994 International Business Machines Corp.       *
+ * (c) Copyright 1993, 1994 Sun Microsystems, Inc.                      *
+ * (c) Copyright 1993, 1994 Novell, Inc.                                *
+ */
+/*
+ * $XConsortium: protodpy.c /main/4 1995/10/27 16:14:24 rswiston $
+ *
+ * Copyright 1989 Massachusetts Institute of Technology
+ *
+ * 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, and that the name of M.I.T. not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  M.I.T. makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as is"
+ * without express or implied warranty.
+ *
+ * M.I.T. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL M.I.T.
+ * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author:  Keith Packard, MIT X Consortium
+ */
+
+/*
+ * protodpy.c
+ *
+ * manage a collection of proto-displays.  These are displays for
+ * which sessionID's have been generated, but no session has been
+ * started.
+ */
+
+#include "dm.h"
+
+struct protoDisplay	*protoDisplays;
+
+struct protoDisplay * 
+FindProtoDisplay( struct sockaddr *address, int addrlen,
+#if NeedWidePrototypes
+        int displayNumber )
+#else
+        CARD16 displayNumber )
+#endif /* NeedWidePrototypes */
+{
+    struct protoDisplay	*pdpy;
+
+    for (pdpy = protoDisplays; pdpy; pdpy=pdpy->next)
+	if (pdpy->displayNumber == displayNumber &&
+	    addressEqual ((char *)address, addrlen, (char *)pdpy->address, pdpy->addrlen))
+	{
+	    return pdpy;
+	}
+    return (struct protoDisplay *) 0;
+}
+
+void
+TimeoutProtoDisplays( long now )
+{
+    struct protoDisplay	*pdpy, *next;
+
+    for (pdpy = protoDisplays; pdpy; pdpy = next)
+    {
+	next = pdpy->next;
+	if (pdpy->date < now - PROTO_TIMEOUT)
+	    DisposeProtoDisplay (pdpy);
+    }
+}
+
+struct protoDisplay * 
+NewProtoDisplay( struct sockaddr *address, int addrlen,
+#if NeedWidePrototypes
+        int displayNumber,
+        int connectionType,
+#else
+        CARD16 displayNumber,
+        CARD16 connectionType,
+#endif /* NeedWidePrototypes */
+        ARRAY8Ptr connectionAddress, CARD32 sessionID )
+{
+    struct protoDisplay	*pdpy;
+    time_t  date;
+
+    time (&date);
+    TimeoutProtoDisplays (date);
+    pdpy = (struct protoDisplay *) malloc (sizeof *pdpy);
+    if (!pdpy)
+	return NULL;
+    pdpy->address = (struct sockaddr *) malloc (addrlen);
+    if (!pdpy->address)
+    {
+	free ((char *) pdpy);
+	return NULL;
+    }
+    pdpy->addrlen = addrlen;
+    bcopy ((char *)address, (char *)pdpy->address, addrlen);
+    pdpy->displayNumber = displayNumber;
+    pdpy->connectionType = connectionType;
+    pdpy->date = date;
+    if (!XdmcpCopyARRAY8 (connectionAddress, &pdpy->connectionAddress))
+    {
+	free ((char *) pdpy->address);
+	free ((char *) pdpy);
+	return NULL;
+    }
+    pdpy->sessionID = sessionID;
+    pdpy->fileAuthorization = (Xauth *) NULL;
+    pdpy->xdmcpAuthorization = (Xauth *) NULL;
+    pdpy->next = protoDisplays;
+    protoDisplays = pdpy;
+    return pdpy;
+}
+
+int 
+DisposeProtoDisplay( struct protoDisplay *pdpy )
+{
+    struct protoDisplay	*p, *prev;
+
+    prev = 0;
+    for (p = protoDisplays; p; p=p->next)
+    {
+	if (p == pdpy)
+	    break;
+	prev = p;
+    }
+    if (!p)
+	return;
+    if (prev)
+	prev->next = pdpy->next;
+    else
+	protoDisplays = pdpy->next;
+    XdmcpDisposeARRAY8 (&pdpy->connectionAddress);
+    if (pdpy->fileAuthorization)
+	XauDisposeAuth (pdpy->fileAuthorization);
+    if (pdpy->xdmcpAuthorization)
+	XauDisposeAuth (pdpy->xdmcpAuthorization);
+    free ((char *) pdpy->address);
+    free ((char *) pdpy);
+}