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xserver/lbx/lbxprop.c

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/* $Xorg: lbxprop.c,v 1.4 2001/02/09 02:05:17 xorgcvs Exp $ */
/*
Copyright 1986, 1998 The Open Group
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
OPEN GROUP 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 The Open Group 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 Open Group.
*/
/*
* Copyright 1993 Network Computing Devices, Inc.
*
* 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 Network Computing Devices, Inc. not be
* used in advertising or publicity pertaining to distribution of this
* software without specific, written prior permission.
*
* THIS SOFTWARE IS PROVIDED `AS-IS'. NETWORK COMPUTING DEVICES, INC.,
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING WITHOUT
* LIMITATION ALL IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE, OR NONINFRINGEMENT. IN NO EVENT SHALL NETWORK
* COMPUTING DEVICES, INC., BE LIABLE FOR ANY DAMAGES WHATSOEVER, INCLUDING
* SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING LOSS OF USE, DATA,
* OR PROFITS, EVEN IF ADVISED OF THE POSSIBILITY THEREOF, AND REGARDLESS OF
* WHETHER IN AN ACTION IN CONTRACT, TORT OR NEGLIGENCE, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
/* $XFree86: xc/programs/Xserver/lbx/lbxprop.c,v 1.5 2001/12/14 20:00:00 dawes Exp $ */
/* various bits of DIX-level mangling */
#include <sys/types.h>
#include <stdio.h>
#define NEED_REPLIES
#define NEED_EVENTS
#include "X.h"
#include "Xproto.h"
#include "misc.h"
#include "os.h"
#include "dixstruct.h"
#include "resource.h"
#include "servermd.h"
#include "propertyst.h"
#include "colormapst.h"
#include "windowstr.h"
#define _XLBX_SERVER_
#include "lbxstr.h"
#include "lbxserve.h"
#include "lbxtags.h"
#include "Xfuncproto.h"
#ifdef XCSECURITY
#define _SECURITY_SERVER
#include "extensions/security.h"
#endif
#include "swaprep.h"
void
LbxStallPropRequest(ClientPtr client,
PropertyPtr pProp)
{
xReq *req = (xReq *) client->requestBuffer;
register char n;
LbxQueryTagData(client, pProp->owner_pid,
pProp->tag_id, LbxTagTypeProperty);
/*
* Before we reset the request, we must make sure
* it is in the client's byte order.
*/
if (client->swapped) {
if (req->reqType == X_ChangeProperty) {
xChangePropertyReq *stuff = (xChangePropertyReq *) req;
swaps(&stuff->length, n);
swapl(&stuff->window, n);
swapl(&stuff->property, n);
swapl(&stuff->type, n);
swapl(&stuff->nUnits, n);
switch ( stuff->format ) {
case 16:
SwapRestS(stuff);
break;
case 32:
SwapRestL(stuff);
break;
}
} else if (req->reqType == X_GetProperty) {
xGetPropertyReq *stuff = (xGetPropertyReq *) req;
swaps(&stuff->length, n);
swapl(&stuff->window, n);
swapl(&stuff->property, n);
swapl(&stuff->type, n);
swapl(&stuff->longOffset, n);
swapl(&stuff->longLength, n);
} else if (req->data == X_LbxChangeProperty) {
xLbxChangePropertyReq *stuff = (xLbxChangePropertyReq *) req;
swaps(&stuff->length, n);
swapl(&stuff->window, n);
swapl(&stuff->property, n);
swapl(&stuff->type, n);
swapl(&stuff->nUnits, n);
} else if (req->data == X_LbxGetProperty) {
xLbxGetPropertyReq *stuff = (xLbxGetPropertyReq *) req;
swaps(&stuff->length, n);
swapl(&stuff->window, n);
swapl(&stuff->property, n);
swapl(&stuff->type, n);
swapl(&stuff->longOffset, n);
swapl(&stuff->longLength, n);
}
}
ResetCurrentRequest(client);
client->sequence--;
IgnoreClient(client);
}
int
LbxChangeWindowProperty(ClientPtr client,
WindowPtr pWin,
Atom property,
Atom type,
int format,
int mode,
unsigned long len,
Bool have_data,
pointer value,
Bool sendevent,
XID *tag)
{
PropertyPtr pProp;
xEvent event;
int sizeInBytes;
int totalSize;
pointer data;
sizeInBytes = format >> 3;
totalSize = len * sizeInBytes;
/* first see if property already exists */
pProp = wUserProps(pWin);
while (pProp) {
if (pProp->propertyName == property)
break;
pProp = pProp->next;
}
if (!pProp) { /* just add to list */
if (!pWin->optional && !MakeWindowOptional(pWin))
return (BadAlloc);
pProp = (PropertyPtr) xalloc(sizeof(PropertyRec));
if (!pProp)
return (BadAlloc);
data = (pointer) xalloc(totalSize);
if (!data && len) {
xfree(pProp);
return (BadAlloc);
}
pProp->propertyName = property;
pProp->type = type;
pProp->format = format;
pProp->data = data;
if (have_data) {
if (len)
memmove((char *) data, (char *) value, totalSize);
pProp->tag_id = 0;
pProp->owner_pid = 0;
} else {
if (!TagSaveTag(LbxTagTypeProperty, totalSize,
(pointer)pProp, &pProp->tag_id)) {
xfree(pProp);
xfree(pProp->data);
return BadAlloc;
}
pProp->owner_pid = LbxProxyID(client);
TagMarkProxy(pProp->tag_id, pProp->owner_pid);
}
pProp->size = len;
pProp->next = pWin->optional->userProps;
pWin->optional->userProps = pProp;
} else {
/*
* To append or prepend to a property the request format and type must
* match those of the already defined property. The existing format
* and type are irrelevant when using the mode "PropModeReplace" since
* they will be written over.
*/
if ((format != pProp->format) && (mode != PropModeReplace))
return (BadMatch);
if ((pProp->type != type) && (mode != PropModeReplace))
return (BadMatch);
/*
* if its a modify instead of replace, make sure we have the current
* value
*/
if ((mode != PropModeReplace) && pProp->tag_id && pProp->owner_pid) {
LbxStallPropRequest(client, pProp);
return (client->noClientException);
}
/* make sure any old tag is flushed first */
if (pProp->tag_id)
TagDeleteTag(pProp->tag_id);
if (mode == PropModeReplace) {
if (totalSize != pProp->size * (pProp->format >> 3)) {
data = (pointer) xrealloc(pProp->data, totalSize);
if (!data && len)
return (BadAlloc);
pProp->data = data;
}
if (have_data) {
if (len)
memmove((char *) pProp->data, (char *) value, totalSize);
} else {
if (!TagSaveTag(LbxTagTypeProperty, totalSize,
(pointer)pProp, &pProp->tag_id)) {
xfree(pProp);
xfree(pProp->data);
return BadAlloc;
}
pProp->owner_pid = LbxProxyID(client);
TagMarkProxy(pProp->tag_id, pProp->owner_pid);
}
pProp->size = len;
pProp->type = type;
pProp->format = format;
} else if (len == 0) {
/* do nothing */
} else if (mode == PropModeAppend) {
data = (pointer) xrealloc(pProp->data,
sizeInBytes * (len + pProp->size));
if (!data)
return (BadAlloc);
pProp->data = data;
memmove(&((char *) data)[pProp->size * sizeInBytes],
(char *) value,
totalSize);
pProp->size += len;
} else if (mode == PropModePrepend) {
data = (pointer) xalloc(sizeInBytes * (len + pProp->size));
if (!data)
return (BadAlloc);
memmove(&((char *) data)[totalSize], (char *) pProp->data,
(int) (pProp->size * sizeInBytes));
memmove((char *) data, (char *) value, totalSize);
xfree(pProp->data);
pProp->data = data;
pProp->size += len;
}
}
if (sendevent) {
event.u.u.type = PropertyNotify;
event.u.property.window = pWin->drawable.id;
event.u.property.state = PropertyNewValue;
event.u.property.atom = pProp->propertyName;
event.u.property.time = currentTime.milliseconds;
DeliverEvents(pWin, &event, 1, (WindowPtr) NULL);
}
if (pProp->tag_id)
*tag = pProp->tag_id;
return (Success);
}
int
LbxChangeProperty(ClientPtr client)
{
WindowPtr pWin;
char format,
mode;
unsigned long len;
int err;
int n;
XID newtag;
xLbxChangePropertyReply rep;
REQUEST(xLbxChangePropertyReq);
REQUEST_SIZE_MATCH(xLbxChangePropertyReq);
UpdateCurrentTime();
format = stuff->format;
mode = stuff->mode;
if ((mode != PropModeReplace) && (mode != PropModeAppend) &&
(mode != PropModePrepend)) {
client->errorValue = mode;
return BadValue;
}
if ((format != 8) && (format != 16) && (format != 32)) {
client->errorValue = format;
return BadValue;
}
len = stuff->nUnits;
if (len > ((0xffffffff - sizeof(xChangePropertyReq)) >> 2))
return BadLength;
pWin = (WindowPtr) SecurityLookupWindow(stuff->window, client,
SecurityWriteAccess);
if (!pWin)
return (BadWindow);
if (!ValidAtom(stuff->property)) {
client->errorValue = stuff->property;
return (BadAtom);
}
if (!ValidAtom(stuff->type)) {
client->errorValue = stuff->type;
return (BadAtom);
}
rep.type = X_Reply;
rep.sequenceNumber = client->sequence;
rep.length = 0;
rep.pad = rep.pad0 = rep.pad1 = rep.pad2 = rep.pad3 = rep.pad4 = 0;
if (client->swapped) {
swaps(&rep.sequenceNumber, n);
}
#ifdef XCSECURITY
switch (SecurityCheckPropertyAccess(client, pWin, stuff->property,
SecurityWriteAccess))
{
case SecurityErrorOperation:
client->errorValue = stuff->property;
return BadAtom;
case SecurityIgnoreOperation:
rep.tag = 0;
WriteToClient(client, sizeof(xLbxChangePropertyReply), (char *)&rep);
return client->noClientException;
}
#endif
err = LbxChangeWindowProperty(client, pWin, stuff->property, stuff->type,
(int) format, (int) mode, len, FALSE, (pointer) &stuff[1],
TRUE, &newtag);
if (err)
return err;
rep.tag = newtag;
if (client->swapped) {
swapl(&rep.tag, n);
}
WriteToClient(client, sizeof(xLbxChangePropertyReply), (char *)&rep);
return client->noClientException;
}
static void
LbxWriteGetpropReply(ClientPtr client,
xLbxGetPropertyReply *rep)
{
int n;
if (client->swapped) {
swaps(&rep->sequenceNumber, n);
swapl(&rep->length, n);
swapl(&rep->propertyType, n);
swapl(&rep->bytesAfter, n);
swapl(&rep->nItems, n);
swapl(&rep->tag, n);
}
WriteToClient(client, sizeof(xLbxGetPropertyReply), (char *)rep);
}
int
LbxGetProperty(ClientPtr client)
{
PropertyPtr pProp,
prevProp;
unsigned long n,
len,
ind;
WindowPtr pWin;
xLbxGetPropertyReply reply;
Bool send_data = FALSE;
REQUEST(xLbxGetPropertyReq);
REQUEST_SIZE_MATCH(xLbxGetPropertyReq);
reply.pad1 = 0;
reply.pad2 = 0;
if (stuff->delete)
UpdateCurrentTime();
pWin = (WindowPtr) SecurityLookupWindow(stuff->window, client,
SecurityReadAccess);
if (!pWin)
return (BadWindow);
if (!ValidAtom(stuff->property)) {
client->errorValue = stuff->property;
return (BadAtom);
}
if ((stuff->delete != xTrue) && (stuff->delete != xFalse)) {
client->errorValue = stuff->delete;
return (BadValue);
}
if ((stuff->type != AnyPropertyType) && !ValidAtom(stuff->type))
{
client->errorValue = stuff->type;
return(BadAtom);
}
pProp = wUserProps(pWin);
prevProp = (PropertyPtr) NULL;
while (pProp) {
if (pProp->propertyName == stuff->property)
break;
prevProp = pProp;
pProp = pProp->next;
}
reply.type = X_Reply;
reply.sequenceNumber = client->sequence;
if (!pProp) {
reply.nItems = 0;
reply.length = 0;
reply.bytesAfter = 0;
reply.propertyType = None;
reply.format = 0;
reply.tag = 0;
LbxWriteGetpropReply(client, &reply);
return client->noClientException;
}
/*
* If the request type and actual type don't match. Return the
* property information, but not the data.
*/
if ((stuff->type != pProp->type) &&
(stuff->type != AnyPropertyType)) {
reply.bytesAfter = pProp->size;
reply.format = pProp->format;
reply.length = 0;
reply.nItems = 0;
reply.propertyType = pProp->type;
reply.tag = 0;
LbxWriteGetpropReply(client, &reply);
return client->noClientException;
}
/*
* Return type, format, value to client
*/
n = (pProp->format >> 3) * pProp->size; /* size (bytes) of prop */
ind = stuff->longOffset << 2;
/*
* If longOffset is invalid such that it causes "len" to be
* negative, it's a value error.
*/
if (n < ind) {
client->errorValue = stuff->longOffset;
return BadValue;
}
/* make sure we have the current value */
if (pProp->tag_id && pProp->owner_pid) {
LbxStallPropRequest(client, pProp);
return client->noClientException;
}
len = min(n - ind, stuff->longLength << 2);
reply.bytesAfter = n - (ind + len);
reply.format = pProp->format;
reply.propertyType = pProp->type;
if (!pProp->tag_id) {
if (n && (!stuff->delete || reply.bytesAfter)) {
TagSaveTag(LbxTagTypeProperty, n, (pointer)pProp, &pProp->tag_id);
pProp->owner_pid = 0;
}
send_data = TRUE;
} else
send_data = !TagProxyMarked(pProp->tag_id, LbxProxyID(client));
if (pProp->tag_id && send_data)
TagMarkProxy(pProp->tag_id, LbxProxyID(client));
reply.tag = pProp->tag_id;
if (!send_data)
len = 0;
else if (reply.tag) {
len = n;
ind = 0;
}
reply.nItems = len / (pProp->format >> 3);
reply.length = (len + 3) >> 2;
if (stuff->delete && (reply.bytesAfter == 0)) {
xEvent event;
event.u.u.type = PropertyNotify;
event.u.property.window = pWin->drawable.id;
event.u.property.state = PropertyDelete;
event.u.property.atom = pProp->propertyName;
event.u.property.time = currentTime.milliseconds;
DeliverEvents(pWin, &event, 1, (WindowPtr) NULL);
}
LbxWriteGetpropReply(client, &reply);
if (len) {
switch (reply.format) {
case 32:
client->pSwapReplyFunc = (ReplySwapPtr)CopySwap32Write;
break;
case 16:
client->pSwapReplyFunc = (ReplySwapPtr)CopySwap16Write;
break;
default:
client->pSwapReplyFunc = (ReplySwapPtr) WriteToClient;
break;
}
WriteSwappedDataToClient(client, len,
(char *) pProp->data + ind);
}
if (stuff->delete && (reply.bytesAfter == 0)) {
if (pProp->tag_id)
TagDeleteTag(pProp->tag_id);
if (prevProp == (PropertyPtr) NULL) {
if (!(pWin->optional->userProps = pProp->next))
CheckWindowOptionalNeed(pWin);
} else
prevProp->next = pProp->next;
xfree(pProp->data);
xfree(pProp);
}
return client->noClientException;
}
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