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- /***********************************************************
- Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts,
- and the Massachusetts Institute of Technology, Cambridge, Massachusetts.
-
- All Rights Reserved
-
- Permission to use, copy, modify, and distribute this software and its
- documentation for any purpose and without fee is hereby granted,
- 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 names of Digital or MIT not be
- used in advertising or publicity pertaining to distribution of the
- software without specific, written prior permission.
-
- DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
- ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
- DIGITAL 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.
-
- ******************************************************************/
- /* $XConsortium: property.c,v 5.5 91/05/09 16:00:36 rws Exp $ */
-
- #include "X.h"
- #define NEED_REPLIES
- #define NEED_EVENTS
- #include "Xproto.h"
- #include "windowstr.h"
- #include "propertyst.h"
- #include "dixstruct.h"
-
- extern void (*ReplySwapVector[]) ();
- extern void CopySwap16Write(), CopySwap32Write(), Swap32Write();
- extern int WriteToClient();
-
- /*****************************************************************
- * Property Stuff
- *
- * ChangeProperty, DeleteProperty, GetProperties,
- * ListProperties
- *
- * Properties below to windows. A allocate slots each time
- * a property is added. No fancy searching done.
- *
- *****************************************************************/
-
- #ifdef notdef
- static void
- PrintPropertys(pWin)
- WindowPtr pWin;
- {
- PropertyPtr pProp;
- register int j;
-
- pProp = pWin->userProps;
- while (pProp)
- {
- ErrorF( "%x %x\n", pProp->propertyName, pProp->type);
- ErrorF("property format: %d\n", pProp->format);
- ErrorF("property data: \n");
- for (j=0; j<(pProp->format/8)*pProp->size; j++)
- ErrorF("%c\n", pProp->data[j]);
- pProp = pProp->next;
- }
- }
- #endif
-
- int
- ProcRotateProperties(client)
- ClientPtr client;
- {
- int i, j, delta;
- REQUEST(xRotatePropertiesReq);
- WindowPtr pWin;
- register Atom * atoms;
- PropertyPtr * props; /* array of pointer */
- PropertyPtr pProp;
- xEvent event;
-
- REQUEST_FIXED_SIZE(xRotatePropertiesReq, stuff->nAtoms << 2);
- UpdateCurrentTime();
- pWin = (WindowPtr) LookupWindow(stuff->window, client);
- if (!pWin)
- return(BadWindow);
- if (!stuff->nAtoms)
- return(Success);
- atoms = (Atom *) & stuff[1];
- props = (PropertyPtr *)ALLOCATE_LOCAL(stuff->nAtoms * sizeof(PropertyPtr));
- if (!props)
- return(BadAlloc);
- for (i = 0; i < stuff->nAtoms; i++)
- {
- if (!ValidAtom(atoms[i]))
- {
- DEALLOCATE_LOCAL(props);
- client->errorValue = atoms[i];
- return BadAtom;
- }
- for (j = i + 1; j < stuff->nAtoms; j++)
- if (atoms[j] == atoms[i])
- {
- DEALLOCATE_LOCAL(props);
- return BadMatch;
- }
- pProp = wUserProps (pWin);
- while (pProp)
- {
- if (pProp->propertyName == atoms[i])
- goto found;
- pProp = pProp->next;
- }
- DEALLOCATE_LOCAL(props);
- return BadMatch;
- found:
- props[i] = pProp;
- }
- delta = stuff->nPositions;
-
- /* If the rotation is a complete 360 degrees, then moving the properties
- around and generating PropertyNotify events should be skipped. */
-
- if ( (stuff->nAtoms != 0) && (abs(delta) % stuff->nAtoms) != 0 )
- {
- while (delta < 0) /* faster if abs value is small */
- delta += stuff->nAtoms;
- for (i = 0; i < stuff->nAtoms; i++)
- {
- /* Generate a PropertyNotify event for each property whose value
- is changed in the order in which they appear in the request. */
-
- event.u.u.type = PropertyNotify;
- event.u.property.window = pWin->drawable.id;
- event.u.property.state = PropertyNewValue;
- event.u.property.atom = props[i]->propertyName;
- event.u.property.time = currentTime.milliseconds;
- DeliverEvents(pWin, &event, 1, (WindowPtr)NULL);
-
- props[i]->propertyName = atoms[(i + delta) % stuff->nAtoms];
- }
- }
- DEALLOCATE_LOCAL(props);
- return Success;
- }
-
- int
- ProcChangeProperty(client)
- ClientPtr client;
- {
- WindowPtr pWin;
- char format, mode;
- unsigned long len;
- int sizeInBytes;
- int totalSize;
- int err;
- REQUEST(xChangePropertyReq);
-
- REQUEST_AT_LEAST_SIZE(xChangePropertyReq);
- 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;
- sizeInBytes = format>>3;
- totalSize = len * sizeInBytes;
- REQUEST_FIXED_SIZE(xChangePropertyReq, totalSize);
-
- pWin = (WindowPtr)LookupWindow(stuff->window, client);
- if (!pWin)
- return(BadWindow);
- if (!ValidAtom(stuff->property))
- {
- client->errorValue = stuff->property;
- return(BadAtom);
- }
- if (!ValidAtom(stuff->type))
- {
- client->errorValue = stuff->type;
- return(BadAtom);
- }
-
- err = ChangeWindowProperty(pWin, stuff->property, stuff->type, (int)format,
- (int)mode, len, (pointer)&stuff[1], TRUE);
- if (err != Success)
- return err;
- else
- return client->noClientException;
- }
-
- int
- ChangeWindowProperty(pWin, property, type, format, mode, len, value, sendevent)
- WindowPtr pWin;
- Atom property, type;
- int format, mode;
- unsigned long len;
- pointer value;
- Bool sendevent;
- {
- 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 (len)
- bcopy((char *)value, (char *)data, totalSize);
- 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 (mode == PropModeReplace)
- {
- if (totalSize != pProp->size * (pProp->format >> 3))
- {
- data = (pointer)xrealloc(pProp->data, totalSize);
- if (!data && len)
- return(BadAlloc);
- pProp->data = data;
- }
- if (len)
- bcopy((char *)value, (char *)pProp->data, totalSize);
- 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;
- bcopy((char *)value,
- &((char *)data)[pProp->size * sizeInBytes],
- totalSize);
- pProp->size += len;
- }
- else if (mode == PropModePrepend)
- {
- data = (pointer)xalloc(sizeInBytes * (len + pProp->size));
- if (!data)
- return(BadAlloc);
- bcopy((char *)pProp->data, &((char *)data)[totalSize],
- (int)(pProp->size * sizeInBytes));
- bcopy((char *)value, (char *)data, totalSize);
- xfree(pProp->data);
- pProp->data = data;
- pProp->size += len;
- }
- }
- 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);
-
- return(Success);
- }
-
- DeleteProperty(pWin, propName)
- WindowPtr pWin;
- Atom propName;
- {
- PropertyPtr pProp, prevProp;
- xEvent event;
-
- if (!(pProp = wUserProps (pWin)))
- return(Success);
- prevProp = (PropertyPtr)NULL;
- while (pProp)
- {
- if (pProp->propertyName == propName)
- break;
- prevProp = pProp;
- pProp = pProp->next;
- }
- if (pProp)
- {
- if (prevProp == (PropertyPtr)NULL) /* takes care of head */
- {
- if (!(pWin->optional->userProps = pProp->next))
- CheckWindowOptionalNeed (pWin);
- }
- else
- {
- prevProp->next = pProp->next;
- }
- 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);
- xfree(pProp->data);
- xfree(pProp);
- }
- return(Success);
- }
-
- DeleteAllWindowProperties(pWin)
- WindowPtr pWin;
- {
- PropertyPtr pProp, pNextProp;
- xEvent event;
-
- pProp = wUserProps (pWin);
- while (pProp)
- {
- 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);
- pNextProp = pProp->next;
- xfree(pProp->data);
- xfree(pProp);
- pProp = pNextProp;
- }
- }
-
- /*****************
- * GetProperty
- * If type Any is specified, returns the property from the specified
- * window regardless of its type. If a type is specified, returns the
- * property only if its type equals the specified type.
- * If delete is True and a property is returned, the property is also
- * deleted from the window and a PropertyNotify event is generated on the
- * window.
- *****************/
-
- int
- ProcGetProperty(client)
- ClientPtr client;
- {
- PropertyPtr pProp, prevProp;
- unsigned long n, len, ind;
- WindowPtr pWin;
- xGetPropertyReply reply;
- REQUEST(xGetPropertyReq);
-
- REQUEST_SIZE_MATCH(xGetPropertyReq);
- if (stuff->delete)
- UpdateCurrentTime();
- pWin = (WindowPtr)LookupWindow(stuff->window, client);
- if (pWin)
- {
- 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))
- {
- 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)
- {
-
- /* 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;
- WriteReplyToClient(client, sizeof(xGenericReply), &reply);
- return(Success);
- }
-
- /*
- * Return type, format, value to client
- */
- n = (pProp->format/8) * 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;
- }
-
- len = min(n - ind, 4 * stuff->longLength);
-
- reply.bytesAfter = n - (ind + len);
- reply.format = pProp->format;
- reply.length = (len + 3) >> 2;
- reply.nItems = len / (pProp->format / 8 );
- reply.propertyType = pProp->type;
-
- if (stuff->delete && (reply.bytesAfter == 0))
- { /* send the event */
- 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);
- }
-
- WriteReplyToClient(client, sizeof(xGenericReply), &reply);
- if (len)
- {
- switch (reply.format) {
- case 32: client->pSwapReplyFunc = CopySwap32Write; break;
- case 16: client->pSwapReplyFunc = CopySwap16Write; break;
- default: client->pSwapReplyFunc = (void (*) ())WriteToClient; break;
- }
- WriteSwappedDataToClient(client, len, pProp->data + ind);
- }
-
- if (stuff->delete && (reply.bytesAfter == 0))
- { /* delete the Property */
- if (prevProp == (PropertyPtr)NULL) /* takes care of head */
- {
- if (!(pWin->optional->userProps = pProp->next))
- CheckWindowOptionalNeed (pWin);
- }
- else
- prevProp->next = pProp->next;
- xfree(pProp->data);
- xfree(pProp);
- }
- }
- else
- {
- reply.nItems = 0;
- reply.length = 0;
- reply.bytesAfter = 0;
- reply.propertyType = None;
- reply.format = 0;
- WriteReplyToClient(client, sizeof(xGenericReply), &reply);
- }
- return(client->noClientException);
-
- }
- else
- {
- client->errorValue = stuff->type;
- return(BadAtom);
- }
- }
- else
- return (BadWindow);
- }
-
- int
- ProcListProperties(client)
- ClientPtr client;
- {
- Atom *pAtoms, *temppAtoms;
- xListPropertiesReply xlpr;
- int numProps = 0;
- WindowPtr pWin;
- PropertyPtr pProp;
- REQUEST(xResourceReq);
-
- REQUEST_SIZE_MATCH(xResourceReq);
- pWin = (WindowPtr)LookupWindow(stuff->id, client);
- if (!pWin)
- return(BadWindow);
-
- pProp = wUserProps (pWin);
- while (pProp)
- {
- pProp = pProp->next;
- numProps++;
- }
- if (numProps)
- if(!(pAtoms = (Atom *)ALLOCATE_LOCAL(numProps * sizeof(Atom))))
- return(BadAlloc);
-
- xlpr.type = X_Reply;
- xlpr.nProperties = numProps;
- xlpr.length = (numProps * sizeof(Atom)) >> 2;
- xlpr.sequenceNumber = client->sequence;
- pProp = wUserProps (pWin);
- temppAtoms = pAtoms;
- while (pProp)
- {
- *temppAtoms++ = pProp->propertyName;
- pProp = pProp->next;
- }
- WriteReplyToClient(client, sizeof(xGenericReply), &xlpr);
- if (numProps)
- {
- client->pSwapReplyFunc = Swap32Write;
- WriteSwappedDataToClient(client, numProps * sizeof(Atom), pAtoms);
- DEALLOCATE_LOCAL(pAtoms);
- }
- return(client->noClientException);
- }
-