# Copyright (c) 2008, 2009, Oracle and/or its affiliates. All rights reserved.

#

# Permission is hereby granted, free of charge, to any person obtaining a

# copy of this software and associated documentation files (the "Software"),

# to deal in the Software without restriction, including without limitation

# the rights to use, copy, modify, merge, publish, distribute, sublicense,

# and/or sell copies of the Software, and to permit persons to whom the

# Software is furnished to do so, subject to the following conditions:

#

# The above copyright notice and this permission notice (including the next

# paragraph) 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 AUTHORS OR 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.

#

diff --git a/src/XShm.c b/src/XShm.c

index f82455c..d21f380 100644

--- a/src/XShm.c

+++ b/src/XShm.c

@@ -38,6 +38,13 @@ in this Software without prior written authorization from The Open Group.

#include <X11/extensions/Xext.h>

#include <X11/extensions/extutil.h>

+#ifdef SUNSOFT

+#include <fcntl.h>

+#include <sys/types.h>

+#include <sys/stat.h>

+#include <ucred.h>

+#endif

+

static XExtensionInfo _shm_info_data;

static XExtensionInfo *shm_info = &_shm_info_data;

static const char *shm_extension_name = SHMNAME;

@@ -135,6 +142,46 @@ event_to_wire (Display *dpy, XEvent *re, xEvent *event)

return False;

}

+#ifdef SUNSOFT

+/*

+ * Function to determine if a connection is local or not.

+ * Returns: 0 for remote, 1 for local

+ */

+

+static int

+LocalConnection(Display *dpy)

+{

+ int c = ConnectionNumber(dpy);

+ int rv = 0;

+ struct stat statbuf;

+ ucred_t *ucred = NULL;

+

+ if (c >= 0) {

+ /*

+ * First stat the connection fd. If we succeed and the type of file

+ * is a FIFO, then we must be local.

+ */

+ if ((fstat(c, &statbuf) >= 0) && S_ISFIFO(statbuf.st_mode)) {

+ return 1;

+ }

+

+ /*

+ * Then call getpeerucred - if it succeeds, the other end of the

+ * connection must be on the same machine (though possibly in a

+ * different zone).

+ */

+ if (getpeerucred(c, &ucred) == 0) {

+ if (ucred_getzoneid(ucred) != -1) {

+ rv = 1;

+ }

+ ucred_free(ucred);

+ }

+ }

+

+ return rv;

+}

+#endif /* SUNSOFT */

+

/*****************************************************************************

* *

* public Shared Memory Extension routines *

@@ -144,6 +191,15 @@ event_to_wire (Display *dpy, XEvent *re, xEvent *event)

Bool XShmQueryExtension (Display *dpy /* int *event_basep, *error_basep */)

{

XExtDisplayInfo *info = find_display (dpy);

+#ifdef SUNSOFT

+ /*

+ * Sun Mod -- if we're dealing with a remote connection, then the

+ * shared memory extension is not valid. Sigh -- this should really

+ * be in the server somewhere... Required for pipe transport PIPECONN

+ */

+ if(!LocalConnection(dpy))

+ return False;

+#endif /* SUNSOFT */

if (XextHasExtension(info)) {

/* *event_basep = info->codes->first_event;

@@ -176,6 +232,15 @@ Bool XShmQueryVersion(

XExtDisplayInfo *info = find_display (dpy);

xShmQueryVersionReply rep;

register xShmQueryVersionReq *req;

+#ifdef SUNSOFT

+ /*

+ * Sun Mod -- if we're dealing with a remote connection, then the

+ * shared memory extension is not valid. Sigh -- this should really

+ * be in the server somewhere...

+ */

+ if(!LocalConnection(dpy))

+ return False;

+#endif /* SUNSOFT */

ShmCheckExtension (dpy, info, False);