From a915739887477b28d924ecc8417ee107d125bd6c Mon Sep 17 00:00:00 2001 From: marha Date: Sun, 6 Sep 2009 18:48:27 +0000 Subject: Switched to xorg-server-1.6.99.900.tar.gz --- xorg-server/Xi/xiselectev.c | 299 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 299 insertions(+) create mode 100644 xorg-server/Xi/xiselectev.c (limited to 'xorg-server/Xi/xiselectev.c') diff --git a/xorg-server/Xi/xiselectev.c b/xorg-server/Xi/xiselectev.c new file mode 100644 index 000000000..672edab3b --- /dev/null +++ b/xorg-server/Xi/xiselectev.c @@ -0,0 +1,299 @@ +/* + * Copyright 2008 Red Hat, Inc. + * + * 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. + * + * Author: Peter Hutterer + */ + +#ifdef HAVE_DIX_CONFIG_H +#include +#endif + + +#include "dixstruct.h" +#include "windowstr.h" +#include "exglobals.h" +#include "exevents.h" +#include + +#include "xiselectev.h" + +/** + * Check the given mask (in len bytes) for invalid mask bits. + * Invalid mask bits are any bits above XI2LastEvent. + * + * @return BadValue if at least one invalid bit is set or Success otherwise. + */ +int XICheckInvalidMaskBits(unsigned char *mask, int len) +{ + if (len >= XIMaskLen(XI2LASTEVENT)) + { + int i; + for (i = XI2LASTEVENT + 1; i < len * 8; i++) + if (BitIsOn(mask, i)) + return BadValue; + } + + return Success; +} + +int +SProcXISelectEvents(ClientPtr client) +{ + char n; + int i; + xXIEventMask* evmask; + + REQUEST(xXISelectEventsReq); + swaps(&stuff->length, n); + REQUEST_AT_LEAST_SIZE(xXISelectEventsReq); + swapl(&stuff->win, n); + swaps(&stuff->num_masks, n); + + evmask = (xXIEventMask*)&stuff[1]; + for (i = 0; i < stuff->num_masks; i++) + { + swaps(&evmask->deviceid, n); + swaps(&evmask->mask_len, n); + evmask = (xXIEventMask*)(((char*)&evmask[1]) + evmask->mask_len * 4); + } + + return (ProcXISelectEvents(client)); +} + +int +ProcXISelectEvents(ClientPtr client) +{ + int rc, num_masks; + WindowPtr win; + DeviceIntPtr dev; + DeviceIntRec dummy; + xXIEventMask *evmask; + int *types = NULL; + int len; + + REQUEST(xXISelectEventsReq); + REQUEST_AT_LEAST_SIZE(xXISelectEventsReq); + + if (stuff->num_masks == 0) + return BadValue; + + rc = dixLookupWindow(&win, stuff->win, client, DixReceiveAccess); + if (rc != Success) + return rc; + + len = sz_xXISelectEventsReq; + + /* check request validity */ + evmask = (xXIEventMask*)&stuff[1]; + num_masks = stuff->num_masks; + while(num_masks--) + { + len += sizeof(xXIEventMask) + evmask->mask_len * 4; + + if (bytes_to_int32(len) > stuff->length) + return BadLength; + + if (evmask->deviceid != XIAllDevices && + evmask->deviceid != XIAllMasterDevices) + rc = dixLookupDevice(&dev, evmask->deviceid, client, DixUseAccess); + else { + /* XXX: XACE here? */ + } + if (rc != Success) + return rc; + + /* hierarchy event mask is not allowed on devices */ + if (evmask->deviceid != XIAllDevices && evmask->mask_len >= 1) + { + unsigned char *bits = (unsigned char*)&evmask[1]; + if (BitIsOn(bits, XI_HierarchyChanged)) + return BadValue; + } + + /* Raw events may only be selected on root windows */ + if (win->parent && evmask->mask_len >= 1) + { + unsigned char *bits = (unsigned char*)&evmask[1]; + if (BitIsOn(bits, XI_RawKeyPress) || + BitIsOn(bits, XI_RawKeyRelease) || + BitIsOn(bits, XI_RawButtonPress) || + BitIsOn(bits, XI_RawButtonRelease) || + BitIsOn(bits, XI_RawMotion)) + return BadValue; + } + + if (XICheckInvalidMaskBits((unsigned char*)&evmask[1], + evmask->mask_len * 4) != Success) + return BadValue; + + evmask = (xXIEventMask*)(((unsigned char*)evmask) + evmask->mask_len * 4); + evmask++; + } + + if (bytes_to_int32(len) != stuff->length) + return BadLength; + + /* Set masks on window */ + evmask = (xXIEventMask*)&stuff[1]; + num_masks = stuff->num_masks; + while(num_masks--) + { + if (evmask->deviceid == XIAllDevices || + evmask->deviceid == XIAllMasterDevices) + { + dummy.id = evmask->deviceid; + dev = &dummy; + } else + dixLookupDevice(&dev, evmask->deviceid, client, DixUseAccess); + if (XISetEventMask(dev, win, client, evmask->mask_len * 4, + (unsigned char*)&evmask[1]) != Success) + return BadAlloc; + evmask = (xXIEventMask*)(((unsigned char*)evmask) + evmask->mask_len * 4); + evmask++; + } + + RecalculateDeliverableEvents(win); + + xfree(types); + return Success; +} + + +int +SProcXIGetSelectedEvents(ClientPtr client) +{ + char n; + + REQUEST(xXIGetSelectedEventsReq); + swaps(&stuff->length, n); + REQUEST_SIZE_MATCH(xXIGetSelectedEventsReq); + swapl(&stuff->win, n); + + return (ProcXIGetSelectedEvents(client)); +} + +int +ProcXIGetSelectedEvents(ClientPtr client) +{ + int rc, i; + WindowPtr win; + char n; + char *buffer = NULL; + xXIGetSelectedEventsReply reply; + OtherInputMasks *masks; + InputClientsPtr others = NULL; + xXIEventMask *evmask = NULL; + DeviceIntPtr dev; + + REQUEST(xXIGetSelectedEventsReq); + REQUEST_SIZE_MATCH(xXIGetSelectedEventsReq); + + rc = dixLookupWindow(&win, stuff->win, client, DixGetAttrAccess); + if (rc != Success) + return rc; + + reply.repType = X_Reply; + reply.RepType = X_XIGetSelectedEvents; + reply.length = 0; + reply.sequenceNumber = client->sequence; + reply.num_masks = 0; + + masks = wOtherInputMasks(win); + if (masks) + { + for (others = wOtherInputMasks(win)->inputClients; others; + others = others->next) { + if (SameClient(others, client)) { + break; + } + } + } + + if (!others) + { + WriteReplyToClient(client, sizeof(xXIGetSelectedEventsReply), &reply); + return Success; + } + + buffer = xcalloc(MAXDEVICES, sizeof(xXIEventMask) + pad_to_int32(XI2MASKSIZE)); + if (!buffer) + return BadAlloc; + + evmask = (xXIEventMask*)buffer; + for (i = 0; i < MAXDEVICES; i++) + { + int j; + unsigned char *devmask = others->xi2mask[i]; + + if (i > 2) + { + rc = dixLookupDevice(&dev, i, client, DixGetAttrAccess); + if (rc != Success) + continue; + } + + + for (j = XI2MASKSIZE - 1; j >= 0; j--) + { + if (devmask[j] != 0) + { + int mask_len = (j + 4)/4; /* j is an index, hence + 4, not + 3 */ + evmask->deviceid = i; + evmask->mask_len = mask_len; + reply.num_masks++; + reply.length += sizeof(xXIEventMask)/4 + evmask->mask_len; + + if (client->swapped) + { + swaps(&evmask->deviceid, n); + swaps(&evmask->mask_len, n); + } + + memcpy(&evmask[1], devmask, j + 1); + evmask = (xXIEventMask*)((char*)evmask + + sizeof(xXIEventMask) + mask_len * 4); + break; + } + } + } + + WriteReplyToClient(client, sizeof(xXIGetSelectedEventsReply), &reply); + + if (reply.num_masks) + WriteToClient(client, reply.length * 4, buffer); + + xfree(buffer); + return Success; +} + +void SRepXIGetSelectedEvents(ClientPtr client, + int len, xXIGetSelectedEventsReply *rep) +{ + char n; + + swaps(&rep->sequenceNumber, n); + swapl(&rep->length, n); + swaps(&rep->num_masks, n); + WriteToClient(client, len, (char *)rep); +} + + -- cgit v1.2.3