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Diffstat (limited to 'dix/dispatch.c')
| -rw-r--r-- | dix/dispatch.c | 3901 |
1 files changed, 3901 insertions, 0 deletions
diff --git a/dix/dispatch.c b/dix/dispatch.c new file mode 100644 index 0000000..7b2132d --- /dev/null +++ b/dix/dispatch.c @@ -0,0 +1,3901 @@ +/************************************************************ + +Copyright 1987, 1989, 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 1987, 1989 by Digital Equipment Corporation, Maynard, 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 name of Digital 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. + +********************************************************/ + +/* The panoramix components contained the following notice */ +/***************************************************************** + +Copyright (c) 1991, 1997 Digital Equipment Corporation, Maynard, Massachusetts. + +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. + +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 +DIGITAL EQUIPMENT CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES, INCLUDING, +BUT NOT LIMITED TO CONSEQUENTIAL OR INCIDENTAL 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 Digital Equipment Corporation +shall not be used in advertising or otherwise to promote the sale, use or other +dealings in this Software without prior written authorization from Digital +Equipment Corporation. + +******************************************************************/ + +/* XSERVER_DTRACE additions: + * Copyright (c) 2005-2006, 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. + */ + + + +#ifdef HAVE_DIX_CONFIG_H +#include <dix-config.h> +#include <version-config.h> +#endif + +#ifdef PANORAMIX_DEBUG +#include <stdio.h> +int ProcInitialConnection(); +#endif + +#include "windowstr.h" +#include <X11/fonts/fontstruct.h> +#include "dixfontstr.h" +#include "gcstruct.h" +#include "selection.h" +#include "colormapst.h" +#include "cursorstr.h" +#include "scrnintstr.h" +#include "opaque.h" +#include "input.h" +#include "servermd.h" +#include "extnsionst.h" +#include "dixfont.h" +#include "dispatch.h" +#include "swaprep.h" +#include "swapreq.h" +#include "privates.h" +#include "xace.h" +#include "inputstr.h" +#include "xkbsrv.h" +#include "site.h" + +#ifdef XSERVER_DTRACE +#include "registry.h" +#include <sys/types.h> +typedef const char *string; +#include "Xserver-dtrace.h" +#endif + +#define mskcnt ((MAXCLIENTS + 31) / 32) +#define BITMASK(i) (1U << ((i) & 31)) +#define MASKIDX(i) ((i) >> 5) +#define MASKWORD(buf, i) buf[MASKIDX(i)] +#define BITSET(buf, i) MASKWORD(buf, i) |= BITMASK(i) +#define BITCLEAR(buf, i) MASKWORD(buf, i) &= ~BITMASK(i) +#define GETBIT(buf, i) (MASKWORD(buf, i) & BITMASK(i)) + +xConnSetupPrefix connSetupPrefix; + +PaddingInfo PixmapWidthPaddingInfo[33]; + +static ClientPtr grabClient; +#define GrabNone 0 +#define GrabActive 1 +#define GrabKickout 2 +static int grabState = GrabNone; +static long grabWaiters[mskcnt]; +CallbackListPtr ServerGrabCallback = NULL; +HWEventQueuePtr checkForInput[2]; +int connBlockScreenStart; + +static void KillAllClients(void); + +static int nextFreeClientID; /* always MIN free client ID */ + +static int nClients; /* number of authorized clients */ + +CallbackListPtr ClientStateCallback; + +/* dispatchException & isItTimeToYield must be declared volatile since they + * are modified by signal handlers - otherwise optimizer may assume it doesn't + * need to actually check value in memory when used and may miss changes from + * signal handlers. + */ +volatile char dispatchException = 0; +volatile char isItTimeToYield; + +#define SAME_SCREENS(a, b) (\ + (a.pScreen == b.pScreen)) + +void +SetInputCheck(HWEventQueuePtr c0, HWEventQueuePtr c1) +{ + checkForInput[0] = c0; + checkForInput[1] = c1; +} + +void +UpdateCurrentTime(void) +{ + TimeStamp systime; + + /* To avoid time running backwards, we must call GetTimeInMillis before + * calling ProcessInputEvents. + */ + systime.months = currentTime.months; + systime.milliseconds = GetTimeInMillis(); + if (systime.milliseconds < currentTime.milliseconds) + systime.months++; + if (*checkForInput[0] != *checkForInput[1]) + ProcessInputEvents(); + if (CompareTimeStamps(systime, currentTime) == LATER) + currentTime = systime; +} + +/* Like UpdateCurrentTime, but can't call ProcessInputEvents */ +void +UpdateCurrentTimeIf(void) +{ + TimeStamp systime; + + systime.months = currentTime.months; + systime.milliseconds = GetTimeInMillis(); + if (systime.milliseconds < currentTime.milliseconds) + systime.months++; + if (*checkForInput[0] == *checkForInput[1]) + currentTime = systime; +} + + +#undef SMART_DEBUG + +#define SMART_SCHEDULE_DEFAULT_INTERVAL 20 /* ms */ +#define SMART_SCHEDULE_MAX_SLICE 200 /* ms */ + +Bool SmartScheduleDisable = FALSE; +long SmartScheduleSlice = SMART_SCHEDULE_DEFAULT_INTERVAL; +long SmartScheduleInterval = SMART_SCHEDULE_DEFAULT_INTERVAL; +long SmartScheduleMaxSlice = SMART_SCHEDULE_MAX_SLICE; +long SmartScheduleTime; +int SmartScheduleLatencyLimited = 0; +static ClientPtr SmartLastClient; +static int SmartLastIndex[SMART_MAX_PRIORITY-SMART_MIN_PRIORITY+1]; + +#ifdef SMART_DEBUG +long SmartLastPrint; +#endif + +void Dispatch(void); + +static int +SmartScheduleClient (int *clientReady, int nready) +{ + ClientPtr pClient; + int i; + int client; + int bestPrio, best = 0; + int bestRobin, robin; + long now = SmartScheduleTime; + long idle; + + bestPrio = -0x7fffffff; + bestRobin = 0; + idle = 2 * SmartScheduleSlice; + for (i = 0; i < nready; i++) + { + client = clientReady[i]; + pClient = clients[client]; + /* Praise clients which are idle */ + if ((now - pClient->smart_check_tick) >= idle) + { + if (pClient->smart_priority < 0) + pClient->smart_priority++; + } + pClient->smart_check_tick = now; + + /* check priority to select best client */ + robin = (pClient->index - SmartLastIndex[pClient->smart_priority-SMART_MIN_PRIORITY]) & 0xff; + if (pClient->smart_priority > bestPrio || + (pClient->smart_priority == bestPrio && robin > bestRobin)) + { + bestPrio = pClient->smart_priority; + bestRobin = robin; + best = client; + } +#ifdef SMART_DEBUG + if ((now - SmartLastPrint) >= 5000) + fprintf (stderr, " %2d: %3d", client, pClient->smart_priority); +#endif + } +#ifdef SMART_DEBUG + if ((now - SmartLastPrint) >= 5000) + { + fprintf (stderr, " use %2d\n", best); + SmartLastPrint = now; + } +#endif + pClient = clients[best]; + SmartLastIndex[bestPrio-SMART_MIN_PRIORITY] = pClient->index; + /* + * Set current client pointer + */ + if (SmartLastClient != pClient) + { + pClient->smart_start_tick = now; + SmartLastClient = pClient; + } + /* + * Adjust slice + */ + if (nready == 1 && SmartScheduleLatencyLimited == 0) + { + /* + * If it's been a long time since another client + * has run, bump the slice up to get maximal + * performance from a single client + */ + if ((now - pClient->smart_start_tick) > 1000 && + SmartScheduleSlice < SmartScheduleMaxSlice) + { + SmartScheduleSlice += SmartScheduleInterval; + } + } + else + { + SmartScheduleSlice = SmartScheduleInterval; + } + return best; +} + +void +EnableLimitedSchedulingLatency(void) +{ + ++SmartScheduleLatencyLimited; + SmartScheduleSlice = SmartScheduleInterval; +} + +void +DisableLimitedSchedulingLatency(void) +{ + --SmartScheduleLatencyLimited; + + /* protect against bugs */ + if (SmartScheduleLatencyLimited < 0) + SmartScheduleLatencyLimited = 0; +} + +#define MAJOROP ((xReq *)client->requestBuffer)->reqType + +void +Dispatch(void) +{ + int *clientReady; /* array of request ready clients */ + int result; + ClientPtr client; + int nready; + HWEventQueuePtr* icheck = checkForInput; + long start_tick; + + nextFreeClientID = 1; + nClients = 0; + + clientReady = malloc(sizeof(int) * MaxClients); + if (!clientReady) + return; + + SmartScheduleSlice = SmartScheduleInterval; + while (!dispatchException) + { + if (*icheck[0] != *icheck[1]) + { + ProcessInputEvents(); + FlushIfCriticalOutputPending(); + } + + nready = WaitForSomething(clientReady); + + if (nready && !SmartScheduleDisable) + { + clientReady[0] = SmartScheduleClient (clientReady, nready); + nready = 1; + } + /***************** + * Handle events in round robin fashion, doing input between + * each round + *****************/ + + while (!dispatchException && (--nready >= 0)) + { + client = clients[clientReady[nready]]; + if (! client) + { + /* KillClient can cause this to happen */ + continue; + } + /* GrabServer activation can cause this to be true */ + if (grabState == GrabKickout) + { + grabState = GrabActive; + break; + } + isItTimeToYield = FALSE; + + start_tick = SmartScheduleTime; + while (!isItTimeToYield) + { + if (*icheck[0] != *icheck[1]) + ProcessInputEvents(); + + FlushIfCriticalOutputPending(); + if (!SmartScheduleDisable && + (SmartScheduleTime - start_tick) >= SmartScheduleSlice) + { + /* Penalize clients which consume ticks */ + if (client->smart_priority > SMART_MIN_PRIORITY) + client->smart_priority--; + break; + } + /* now, finally, deal with client requests */ + + result = ReadRequestFromClient(client); + if (result <= 0) + { + if (result < 0) + CloseDownClient(client); + break; + } + + client->sequence++; +#ifdef XSERVER_DTRACE + XSERVER_REQUEST_START(LookupMajorName(MAJOROP), MAJOROP, + ((xReq *)client->requestBuffer)->length, + client->index, client->requestBuffer); +#endif + if (result > (maxBigRequestSize << 2)) + result = BadLength; + else { + result = XaceHookDispatch(client, MAJOROP); + if (result == Success) + result = (* client->requestVector[MAJOROP])(client); + XaceHookAuditEnd(client, result); + } +#ifdef XSERVER_DTRACE + XSERVER_REQUEST_DONE(LookupMajorName(MAJOROP), MAJOROP, + client->sequence, client->index, result); +#endif + + if (client->noClientException != Success) + { + CloseDownClient(client); + break; + } + else if (result != Success) + { + SendErrorToClient(client, MAJOROP, + MinorOpcodeOfRequest(client), + client->errorValue, result); + break; + } + } + FlushAllOutput(); + client = clients[clientReady[nready]]; + if (client) + client->smart_stop_tick = SmartScheduleTime; + } + dispatchException &= ~DE_PRIORITYCHANGE; + } +#if defined(DDXBEFORERESET) + ddxBeforeReset (); +#endif + KillAllClients(); + free(clientReady); + dispatchException &= ~DE_RESET; + SmartScheduleLatencyLimited = 0; +} + +#undef MAJOROP + +static int VendorRelease = VENDOR_RELEASE; +static char *VendorString = VENDOR_NAME; + +static const int padlength[4] = {0, 3, 2, 1}; + +void +SetVendorRelease(int release) +{ + VendorRelease = release; +} + +void +SetVendorString(char *string) +{ + VendorString = string; +} + +Bool +CreateConnectionBlock(void) +{ + xConnSetup setup; + xWindowRoot root; + xDepth depth; + xVisualType visual; + xPixmapFormat format; + unsigned long vid; + int i, j, k, + lenofblock, + sizesofar = 0; + char *pBuf; + + + memset(&setup, 0, sizeof(xConnSetup)); + /* Leave off the ridBase and ridMask, these must be sent with + connection */ + + setup.release = VendorRelease; + /* + * per-server image and bitmap parameters are defined in Xmd.h + */ + setup.imageByteOrder = screenInfo.imageByteOrder; + + setup.bitmapScanlineUnit = screenInfo.bitmapScanlineUnit; + setup.bitmapScanlinePad = screenInfo.bitmapScanlinePad; + + setup.bitmapBitOrder = screenInfo.bitmapBitOrder; + setup.motionBufferSize = NumMotionEvents(); + setup.numRoots = screenInfo.numScreens; + setup.nbytesVendor = strlen(VendorString); + setup.numFormats = screenInfo.numPixmapFormats; + setup.maxRequestSize = MAX_REQUEST_SIZE; + QueryMinMaxKeyCodes(&setup.minKeyCode, &setup.maxKeyCode); + + lenofblock = sizeof(xConnSetup) + + pad_to_int32(setup.nbytesVendor) + + (setup.numFormats * sizeof(xPixmapFormat)) + + (setup.numRoots * sizeof(xWindowRoot)); + ConnectionInfo = malloc(lenofblock); + if (!ConnectionInfo) + return FALSE; + + memmove(ConnectionInfo, (char *)&setup, sizeof(xConnSetup)); + sizesofar = sizeof(xConnSetup); + pBuf = ConnectionInfo + sizeof(xConnSetup); + + memmove(pBuf, VendorString, (int)setup.nbytesVendor); + sizesofar += setup.nbytesVendor; + pBuf += setup.nbytesVendor; + i = padlength[setup.nbytesVendor & 3]; + sizesofar += i; + while (--i >= 0) + *pBuf++ = 0; + + memset(&format, 0, sizeof(xPixmapFormat)); + for (i=0; i<screenInfo.numPixmapFormats; i++) + { + format.depth = screenInfo.formats[i].depth; + format.bitsPerPixel = screenInfo.formats[i].bitsPerPixel; + format.scanLinePad = screenInfo.formats[i].scanlinePad; + memmove(pBuf, (char *)&format, sizeof(xPixmapFormat)); + pBuf += sizeof(xPixmapFormat); + sizesofar += sizeof(xPixmapFormat); + } + + connBlockScreenStart = sizesofar; + memset(&depth, 0, sizeof(xDepth)); + memset(&visual, 0, sizeof(xVisualType)); + for (i=0; i<screenInfo.numScreens; i++) + { + ScreenPtr pScreen; + DepthPtr pDepth; + VisualPtr pVisual; + + pScreen = screenInfo.screens[i]; + root.windowId = pScreen->root->drawable.id; + root.defaultColormap = pScreen->defColormap; + root.whitePixel = pScreen->whitePixel; + root.blackPixel = pScreen->blackPixel; + root.currentInputMask = 0; /* filled in when sent */ + root.pixWidth = pScreen->width; + root.pixHeight = pScreen->height; + root.mmWidth = pScreen->mmWidth; + root.mmHeight = pScreen->mmHeight; + root.minInstalledMaps = pScreen->minInstalledCmaps; + root.maxInstalledMaps = pScreen->maxInstalledCmaps; + root.rootVisualID = pScreen->rootVisual; + root.backingStore = pScreen->backingStoreSupport; + root.saveUnders = FALSE; + root.rootDepth = pScreen->rootDepth; + root.nDepths = pScreen->numDepths; + memmove(pBuf, (char *)&root, sizeof(xWindowRoot)); + sizesofar += sizeof(xWindowRoot); + pBuf += sizeof(xWindowRoot); + + pDepth = pScreen->allowedDepths; + for(j = 0; j < pScreen->numDepths; j++, pDepth++) + { + lenofblock += sizeof(xDepth) + + (pDepth->numVids * sizeof(xVisualType)); + pBuf = (char *)realloc(ConnectionInfo, lenofblock); + if (!pBuf) + { + free(ConnectionInfo); + return FALSE; + } + ConnectionInfo = pBuf; + pBuf += sizesofar; + depth.depth = pDepth->depth; + depth.nVisuals = pDepth->numVids; + memmove(pBuf, (char *)&depth, sizeof(xDepth)); + pBuf += sizeof(xDepth); + sizesofar += sizeof(xDepth); + for(k = 0; k < pDepth->numVids; k++) + { + vid = pDepth->vids[k]; + for (pVisual = pScreen->visuals; + pVisual->vid != vid; + pVisual++) + ; + visual.visualID = vid; + visual.class = pVisual->class; + visual.bitsPerRGB = pVisual->bitsPerRGBValue; + visual.colormapEntries = pVisual->ColormapEntries; + visual.redMask = pVisual->redMask; + visual.greenMask = pVisual->greenMask; + visual.blueMask = pVisual->blueMask; + memmove(pBuf, (char *)&visual, sizeof(xVisualType)); + pBuf += sizeof(xVisualType); + sizesofar += sizeof(xVisualType); + } + } + } + connSetupPrefix.success = xTrue; + connSetupPrefix.length = lenofblock/4; + connSetupPrefix.majorVersion = X_PROTOCOL; + connSetupPrefix.minorVersion = X_PROTOCOL_REVISION; + return TRUE; +} + + +int +ProcBadRequest(ClientPtr client) +{ + return BadRequest; +} + +int +ProcCreateWindow(ClientPtr client) +{ + WindowPtr pParent, pWin; + REQUEST(xCreateWindowReq); + int len, rc; + + REQUEST_AT_LEAST_SIZE(xCreateWindowReq); + + LEGAL_NEW_RESOURCE(stuff->wid, client); + rc = dixLookupWindow(&pParent, stuff->parent, client, DixAddAccess); + if (rc != Success) + return rc; + len = client->req_len - bytes_to_int32(sizeof(xCreateWindowReq)); + if (Ones(stuff->mask) != len) + return BadLength; + if (!stuff->width || !stuff->height) + { + client->errorValue = 0; + return BadValue; + } + pWin = CreateWindow(stuff->wid, pParent, stuff->x, + stuff->y, stuff->width, stuff->height, + stuff->borderWidth, stuff->class, + stuff->mask, (XID *) &stuff[1], + (int)stuff->depth, + client, stuff->visual, &rc); + if (pWin) + { + Mask mask = pWin->eventMask; + + pWin->eventMask = 0; /* subterfuge in case AddResource fails */ + if (!AddResource(stuff->wid, RT_WINDOW, (pointer)pWin)) + return BadAlloc; + pWin->eventMask = mask; + } + return rc; +} + +int +ProcChangeWindowAttributes(ClientPtr client) +{ + WindowPtr pWin; + REQUEST(xChangeWindowAttributesReq); + int len, rc; + Mask access_mode = 0; + + REQUEST_AT_LEAST_SIZE(xChangeWindowAttributesReq); + access_mode |= (stuff->valueMask & CWEventMask) ? DixReceiveAccess : 0; + access_mode |= (stuff->valueMask & ~CWEventMask) ? DixSetAttrAccess : 0; + rc = dixLookupWindow(&pWin, stuff->window, client, access_mode); + if (rc != Success) + return rc; + len = client->req_len - bytes_to_int32(sizeof(xChangeWindowAttributesReq)); + if (len != Ones(stuff->valueMask)) + return BadLength; + return ChangeWindowAttributes(pWin, + stuff->valueMask, + (XID *) &stuff[1], + client); +} + +int +ProcGetWindowAttributes(ClientPtr client) +{ + WindowPtr pWin; + REQUEST(xResourceReq); + xGetWindowAttributesReply wa; + int rc; + + REQUEST_SIZE_MATCH(xResourceReq); + rc = dixLookupWindow(&pWin, stuff->id, client, DixGetAttrAccess); + if (rc != Success) + return rc; + memset(&wa, 0, sizeof(xGetWindowAttributesReply)); + GetWindowAttributes(pWin, client, &wa); + WriteReplyToClient(client, sizeof(xGetWindowAttributesReply), &wa); + return Success; +} + +int +ProcDestroyWindow(ClientPtr client) +{ + WindowPtr pWin; + REQUEST(xResourceReq); + int rc; + + REQUEST_SIZE_MATCH(xResourceReq); + rc = dixLookupWindow(&pWin, stuff->id, client, DixDestroyAccess); + if (rc != Success) + return rc; + if (pWin->parent) { + rc = dixLookupWindow(&pWin, pWin->parent->drawable.id, client, + DixRemoveAccess); + if (rc != Success) + return rc; + FreeResource(stuff->id, RT_NONE); + } + return Success; +} + +int +ProcDestroySubwindows(ClientPtr client) +{ + WindowPtr pWin; + REQUEST(xResourceReq); + int rc; + + REQUEST_SIZE_MATCH(xResourceReq); + rc = dixLookupWindow(&pWin, stuff->id, client, DixRemoveAccess); + if (rc != Success) + return rc; + DestroySubwindows(pWin, client); + return Success; +} + +int +ProcChangeSaveSet(ClientPtr client) +{ + WindowPtr pWin; + REQUEST(xChangeSaveSetReq); + int rc; + + REQUEST_SIZE_MATCH(xChangeSaveSetReq); + rc = dixLookupWindow(&pWin, stuff->window, client, DixManageAccess); + if (rc != Success) + return rc; + if (client->clientAsMask == (CLIENT_BITS(pWin->drawable.id))) + return BadMatch; + if ((stuff->mode == SetModeInsert) || (stuff->mode == SetModeDelete)) + return AlterSaveSetForClient(client, pWin, stuff->mode, FALSE, TRUE); + client->errorValue = stuff->mode; + return BadValue; +} + +int +ProcReparentWindow(ClientPtr client) +{ + WindowPtr pWin, pParent; + REQUEST(xReparentWindowReq); + int rc; + + REQUEST_SIZE_MATCH(xReparentWindowReq); + rc = dixLookupWindow(&pWin, stuff->window, client, DixManageAccess); + if (rc != Success) + return rc; + rc = dixLookupWindow(&pParent, stuff->parent, client, DixAddAccess); + if (rc != Success) + return rc; + if (!SAME_SCREENS(pWin->drawable, pParent->drawable)) + return BadMatch; + if ((pWin->backgroundState == ParentRelative) && + (pParent->drawable.depth != pWin->drawable.depth)) + return BadMatch; + if ((pWin->drawable.class != InputOnly) && + (pParent->drawable.class == InputOnly)) + return BadMatch; + return ReparentWindow(pWin, pParent, + (short)stuff->x, (short)stuff->y, client); +} + +int +ProcMapWindow(ClientPtr client) +{ + WindowPtr pWin; + REQUEST(xResourceReq); + int rc; + + REQUEST_SIZE_MATCH(xResourceReq); + rc = dixLookupWindow(&pWin, stuff->id, client, DixShowAccess); + if (rc != Success) + return rc; + MapWindow(pWin, client); + /* update cache to say it is mapped */ + return Success; +} + +int +ProcMapSubwindows(ClientPtr client) +{ + WindowPtr pWin; + REQUEST(xResourceReq); + int rc; + + REQUEST_SIZE_MATCH(xResourceReq); + rc = dixLookupWindow(&pWin, stuff->id, client, DixListAccess); + if (rc != Success) + return rc; + MapSubwindows(pWin, client); + /* update cache to say it is mapped */ + return Success; +} + +int +ProcUnmapWindow(ClientPtr client) +{ + WindowPtr pWin; + REQUEST(xResourceReq); + int rc; + + REQUEST_SIZE_MATCH(xResourceReq); + rc = dixLookupWindow(&pWin, stuff->id, client, DixHideAccess); + if (rc != Success) + return rc; + UnmapWindow(pWin, FALSE); + /* update cache to say it is mapped */ + return Success; +} + +int +ProcUnmapSubwindows(ClientPtr client) +{ + WindowPtr pWin; + REQUEST(xResourceReq); + int rc; + + REQUEST_SIZE_MATCH(xResourceReq); + rc = dixLookupWindow(&pWin, stuff->id, client, DixListAccess); + if (rc != Success) + return rc; + UnmapSubwindows(pWin); + return Success; +} + +int +ProcConfigureWindow(ClientPtr client) +{ + WindowPtr pWin; + REQUEST(xConfigureWindowReq); + int len, rc; + + REQUEST_AT_LEAST_SIZE(xConfigureWindowReq); + rc = dixLookupWindow(&pWin, stuff->window, client, + DixManageAccess|DixSetAttrAccess); + if (rc != Success) + return rc; + len = client->req_len - bytes_to_int32(sizeof(xConfigureWindowReq)); + if (Ones((Mask)stuff->mask) != len) + return BadLength; + return ConfigureWindow(pWin, (Mask)stuff->mask, (XID *) &stuff[1], client); +} + +int +ProcCirculateWindow(ClientPtr client) +{ + WindowPtr pWin; + REQUEST(xCirculateWindowReq); + int rc; + + REQUEST_SIZE_MATCH(xCirculateWindowReq); + if ((stuff->direction != RaiseLowest) && + (stuff->direction != LowerHighest)) + { + client->errorValue = stuff->direction; + return BadValue; + } + rc = dixLookupWindow(&pWin, stuff->window, client, DixManageAccess); + if (rc != Success) + return rc; + CirculateWindow(pWin, (int)stuff->direction, client); + return Success; +} + +static int +GetGeometry(ClientPtr client, xGetGeometryReply *rep) +{ + DrawablePtr pDraw; + int rc; + REQUEST(xResourceReq); + REQUEST_SIZE_MATCH(xResourceReq); + + rc = dixLookupDrawable(&pDraw, stuff->id, client, M_ANY, DixGetAttrAccess); + if (rc != Success) + return rc; + + rep->type = X_Reply; + rep->length = 0; + rep->sequenceNumber = client->sequence; + rep->root = pDraw->pScreen->root->drawable.id; + rep->depth = pDraw->depth; + rep->width = pDraw->width; + rep->height = pDraw->height; + + if (WindowDrawable(pDraw->type)) + { + WindowPtr pWin = (WindowPtr)pDraw; + rep->x = pWin->origin.x - wBorderWidth (pWin); + rep->y = pWin->origin.y - wBorderWidth (pWin); + rep->borderWidth = pWin->borderWidth; + } + else /* DRAWABLE_PIXMAP */ + { + rep->x = rep->y = rep->borderWidth = 0; + } + + return Success; +} + + +int +ProcGetGeometry(ClientPtr client) +{ + xGetGeometryReply rep; + int status; + + memset(&rep, 0, sizeof(xGetGeometryReply)); + if ((status = GetGeometry(client, &rep)) != Success) + return status; + + WriteReplyToClient(client, sizeof(xGetGeometryReply), &rep); + return Success; +} + + +int +ProcQueryTree(ClientPtr client) +{ + xQueryTreeReply reply; + int rc, numChildren = 0; + WindowPtr pChild, pWin, pHead; + Window *childIDs = (Window *)NULL; + REQUEST(xResourceReq); + + REQUEST_SIZE_MATCH(xResourceReq); + rc = dixLookupWindow(&pWin, stuff->id, client, DixListAccess); + if (rc != Success) + return rc; + memset(&reply, 0, sizeof(xQueryTreeReply)); + reply.type = X_Reply; + reply.root = pWin->drawable.pScreen->root->drawable.id; + reply.sequenceNumber = client->sequence; + if (pWin->parent) + reply.parent = pWin->parent->drawable.id; + else + reply.parent = (Window)None; + pHead = RealChildHead(pWin); + for (pChild = pWin->lastChild; pChild != pHead; pChild = pChild->prevSib) + numChildren++; + if (numChildren) + { + int curChild = 0; + + childIDs = malloc(numChildren * sizeof(Window)); + if (!childIDs) + return BadAlloc; + for (pChild = pWin->lastChild; pChild != pHead; pChild = pChild->prevSib) + childIDs[curChild++] = pChild->drawable.id; + } + + reply.nChildren = numChildren; + reply.length = bytes_to_int32(numChildren * sizeof(Window)); + + WriteReplyToClient(client, sizeof(xQueryTreeReply), &reply); + if (numChildren) + { + client->pSwapReplyFunc = (ReplySwapPtr) Swap32Write; + WriteSwappedDataToClient(client, numChildren * sizeof(Window), childIDs); + free(childIDs); + } + + return Success; +} + +int +ProcInternAtom(ClientPtr client) +{ + Atom atom; + char *tchar; + REQUEST(xInternAtomReq); + + REQUEST_FIXED_SIZE(xInternAtomReq, stuff->nbytes); + if ((stuff->onlyIfExists != xTrue) && (stuff->onlyIfExists != xFalse)) + { + client->errorValue = stuff->onlyIfExists; + return BadValue; + } + tchar = (char *) &stuff[1]; + atom = MakeAtom(tchar, stuff->nbytes, !stuff->onlyIfExists); + if (atom != BAD_RESOURCE) + { + xInternAtomReply reply; + memset(&reply, 0, sizeof(xInternAtomReply)); + reply.type = X_Reply; + reply.length = 0; + reply.sequenceNumber = client->sequence; + reply.atom = atom; + WriteReplyToClient(client, sizeof(xInternAtomReply), &reply); + return Success; + } + else + return BadAlloc; +} + +int +ProcGetAtomName(ClientPtr client) +{ + const char *str; + xGetAtomNameReply reply; + int len; + REQUEST(xResourceReq); + + REQUEST_SIZE_MATCH(xResourceReq); + if ( (str = NameForAtom(stuff->id)) ) + { + len = strlen(str); + memset(&reply, 0, sizeof(xGetAtomNameReply)); + reply.type = X_Reply; + reply.length = bytes_to_int32(len); + reply.sequenceNumber = client->sequence; + reply.nameLength = len; + WriteReplyToClient(client, sizeof(xGetAtomNameReply), &reply); + (void)WriteToClient(client, len, str); + return Success; + } + else + { + client->errorValue = stuff->id; + return BadAtom; + } +} + +int +ProcGrabServer(ClientPtr client) +{ + int rc; + REQUEST_SIZE_MATCH(xReq); + if (grabState != GrabNone && client != grabClient) + { + ResetCurrentRequest(client); + client->sequence--; + BITSET(grabWaiters, client->index); + IgnoreClient(client); + return Success; + } + rc = OnlyListenToOneClient(client); + if (rc != Success) + return rc; + grabState = GrabKickout; + grabClient = client; + + if (ServerGrabCallback) + { + ServerGrabInfoRec grabinfo; + grabinfo.client = client; + grabinfo.grabstate = SERVER_GRABBED; + CallCallbacks(&ServerGrabCallback, (pointer)&grabinfo); + } + + return Success; +} + +static void +UngrabServer(ClientPtr client) +{ + int i; + + grabState = GrabNone; + ListenToAllClients(); + for (i = mskcnt; --i >= 0 && !grabWaiters[i]; ) + ; + if (i >= 0) + { + i <<= 5; + while (!GETBIT(grabWaiters, i)) + i++; + BITCLEAR(grabWaiters, i); + AttendClient(clients[i]); + } + + if (ServerGrabCallback) + { + ServerGrabInfoRec grabinfo; + grabinfo.client = client; + grabinfo.grabstate = SERVER_UNGRABBED; + CallCallbacks(&ServerGrabCallback, (pointer)&grabinfo); + } +} + +int +ProcUngrabServer(ClientPtr client) +{ + REQUEST_SIZE_MATCH(xReq); + UngrabServer(client); + return Success; +} + +int +ProcTranslateCoords(ClientPtr client) +{ + REQUEST(xTranslateCoordsReq); + + WindowPtr pWin, pDst; + xTranslateCoordsReply rep; + int rc; + + REQUEST_SIZE_MATCH(xTranslateCoordsReq); + rc = dixLookupWindow(&pWin, stuff->srcWid, client, DixGetAttrAccess); + if (rc != Success) + return rc; + rc = dixLookupWindow(&pDst, stuff->dstWid, client, DixGetAttrAccess); + if (rc != Success) + return rc; + memset(&rep, 0, sizeof(xTranslateCoordsReply)); + rep.type = X_Reply; + rep.length = 0; + rep.sequenceNumber = client->sequence; + if (!SAME_SCREENS(pWin->drawable, pDst->drawable)) + { + rep.sameScreen = xFalse; + rep.child = None; + rep.dstX = rep.dstY = 0; + } + else + { + INT16 x, y; + rep.sameScreen = xTrue; + rep.child = None; + /* computing absolute coordinates -- adjust to destination later */ + x = pWin->drawable.x + stuff->srcX; + y = pWin->drawable.y + stuff->srcY; + pWin = pDst->firstChild; + while (pWin) + { + BoxRec box; + if ((pWin->mapped) && + (x >= pWin->drawable.x - wBorderWidth (pWin)) && + (x < pWin->drawable.x + (int)pWin->drawable.width + + wBorderWidth (pWin)) && + (y >= pWin->drawable.y - wBorderWidth (pWin)) && + (y < pWin->drawable.y + (int)pWin->drawable.height + + wBorderWidth (pWin)) + /* When a window is shaped, a further check + * is made to see if the point is inside + * borderSize + */ + && (!wBoundingShape(pWin) || + RegionContainsPoint(&pWin->borderSize, x, y, &box)) + + && (!wInputShape(pWin) || + RegionContainsPoint(wInputShape(pWin), + x - pWin->drawable.x, + y - pWin->drawable.y, &box)) + ) + { + rep.child = pWin->drawable.id; + pWin = (WindowPtr) NULL; + } + else + pWin = pWin->nextSib; + } + /* adjust to destination coordinates */ + rep.dstX = x - pDst->drawable.x; + rep.dstY = y - pDst->drawable.y; + } + WriteReplyToClient(client, sizeof(xTranslateCoordsReply), &rep); + return Success; +} + +int +ProcOpenFont(ClientPtr client) +{ + int err; + REQUEST(xOpenFontReq); + + REQUEST_FIXED_SIZE(xOpenFontReq, stuff->nbytes); + client->errorValue = stuff->fid; + LEGAL_NEW_RESOURCE(stuff->fid, client); + err = OpenFont(client, stuff->fid, (Mask) 0, + stuff->nbytes, (char *)&stuff[1]); + if (err == Success) + { + return Success; + } + else + return err; +} + +int +ProcCloseFont(ClientPtr client) +{ + FontPtr pFont; + int rc; + REQUEST(xResourceReq); + + REQUEST_SIZE_MATCH(xResourceReq); + rc = dixLookupResourceByType((pointer *)&pFont, stuff->id, RT_FONT, + client, DixDestroyAccess); + if (rc == Success) + { + FreeResource(stuff->id, RT_NONE); + return Success; + } + else + { + client->errorValue = stuff->id; + return rc; + } +} + +int +ProcQueryFont(ClientPtr client) +{ + xQueryFontReply *reply; + FontPtr pFont; + int rc; + REQUEST(xResourceReq); + REQUEST_SIZE_MATCH(xResourceReq); + + rc = dixLookupFontable(&pFont, stuff->id, client, DixGetAttrAccess); + if (rc != Success) + return rc; + + { + xCharInfo *pmax = FONTINKMAX(pFont); + xCharInfo *pmin = FONTINKMIN(pFont); + int nprotoxcistructs; + int rlength; + + nprotoxcistructs = ( + pmax->rightSideBearing == pmin->rightSideBearing && + pmax->leftSideBearing == pmin->leftSideBearing && + pmax->descent == pmin->descent && + pmax->ascent == pmin->ascent && + pmax->characterWidth == pmin->characterWidth) ? + 0 : N2dChars(pFont); + + rlength = sizeof(xQueryFontReply) + + FONTINFONPROPS(FONTCHARSET(pFont)) * sizeof(xFontProp) + + nprotoxcistructs * sizeof(xCharInfo); + reply = calloc(1, rlength); + if(!reply) + { + return BadAlloc; + } + + reply->type = X_Reply; + reply->length = bytes_to_int32(rlength - sizeof(xGenericReply)); + reply->sequenceNumber = client->sequence; + QueryFont( pFont, reply, nprotoxcistructs); + + WriteReplyToClient(client, rlength, reply); + free(reply); + return Success; + } +} + +int +ProcQueryTextExtents(ClientPtr client) +{ + xQueryTextExtentsReply reply; + FontPtr pFont; + ExtentInfoRec info; + unsigned long length; + int rc; + REQUEST(xQueryTextExtentsReq); + REQUEST_AT_LEAST_SIZE(xQueryTextExtentsReq); + + rc = dixLookupFontable(&pFont, stuff->fid, client, DixGetAttrAccess); + if (rc != Success) + return rc; + + length = client->req_len - bytes_to_int32(sizeof(xQueryTextExtentsReq)); + length = length << 1; + if (stuff->oddLength) + { + if (length == 0) + return BadLength; + length--; + } + if (!QueryTextExtents(pFont, length, (unsigned char *)&stuff[1], &info)) + return BadAlloc; + reply.type = X_Reply; + reply.length = 0; + reply.sequenceNumber = client->sequence; + reply.drawDirection = info.drawDirection; + reply.fontAscent = info.fontAscent; + reply.fontDescent = info.fontDescent; + reply.overallAscent = info.overallAscent; + reply.overallDescent = info.overallDescent; + reply.overallWidth = info.overallWidth; + reply.overallLeft = info.overallLeft; + reply.overallRight = info.overallRight; + WriteReplyToClient(client, sizeof(xQueryTextExtentsReply), &reply); + return Success; +} + +int +ProcListFonts(ClientPtr client) +{ + REQUEST(xListFontsReq); + + REQUEST_FIXED_SIZE(xListFontsReq, stuff->nbytes); + + return ListFonts(client, (unsigned char *) &stuff[1], stuff->nbytes, + stuff->maxNames); +} + +int +ProcListFontsWithInfo(ClientPtr client) +{ + REQUEST(xListFontsWithInfoReq); + + REQUEST_FIXED_SIZE(xListFontsWithInfoReq, stuff->nbytes); + + return StartListFontsWithInfo(client, stuff->nbytes, + (unsigned char *) &stuff[1], stuff->maxNames); +} + +/** + * + * \param value must conform to DeleteType + */ +int +dixDestroyPixmap(pointer value, XID pid) +{ + PixmapPtr pPixmap = (PixmapPtr)value; + return (*pPixmap->drawable.pScreen->DestroyPixmap)(pPixmap); +} + +int +ProcCreatePixmap(ClientPtr client) +{ + PixmapPtr pMap; + DrawablePtr pDraw; + REQUEST(xCreatePixmapReq); + DepthPtr pDepth; + int i, rc; + + REQUEST_SIZE_MATCH(xCreatePixmapReq); + client->errorValue = stuff->pid; + LEGAL_NEW_RESOURCE(stuff->pid, client); + + rc = dixLookupDrawable(&pDraw, stuff->drawable, client, M_ANY, + DixGetAttrAccess); + if (rc != Success) + return rc; + + if (!stuff->width || !stuff->height) + { + client->errorValue = 0; + return BadValue; + } + if (stuff->width > 32767 || stuff->height > 32767) + { + /* It is allowed to try and allocate a pixmap which is larger than + * 32767 in either dimension. However, all of the framebuffer code + * is buggy and does not reliably draw to such big pixmaps, basically + * because the Region data structure operates with signed shorts + * for the rectangles in it. + * + * Furthermore, several places in the X server computes the + * size in bytes of the pixmap and tries to store it in an + * integer. This integer can overflow and cause the allocated size + * to be much smaller. + * + * So, such big pixmaps are rejected here with a BadAlloc + */ + return BadAlloc; + } + if (stuff->depth != 1) + { + pDepth = pDraw->pScreen->allowedDepths; + for (i=0; i<pDraw->pScreen->numDepths; i++, pDepth++) + if (pDepth->depth == stuff->depth) + goto CreatePmap; + client->errorValue = stuff->depth; + return BadValue; + } +CreatePmap: + pMap = (PixmapPtr)(*pDraw->pScreen->CreatePixmap) + (pDraw->pScreen, stuff->width, + stuff->height, stuff->depth, 0); + if (pMap) + { + pMap->drawable.serialNumber = NEXT_SERIAL_NUMBER; + pMap->drawable.id = stuff->pid; + /* security creation/labeling check */ + rc = XaceHook(XACE_RESOURCE_ACCESS, client, stuff->pid, RT_PIXMAP, + pMap, RT_NONE, NULL, DixCreateAccess); + if (rc != Success) { + (*pDraw->pScreen->DestroyPixmap)(pMap); + return rc; + } + if (AddResource(stuff->pid, RT_PIXMAP, (pointer)pMap)) + return Success; + (*pDraw->pScreen->DestroyPixmap)(pMap); + } + return BadAlloc; +} + +int +ProcFreePixmap(ClientPtr client) +{ + PixmapPtr pMap; + int rc; + REQUEST(xResourceReq); + REQUEST_SIZE_MATCH(xResourceReq); + + rc = dixLookupResourceByType((pointer *)&pMap, stuff->id, RT_PIXMAP, client, + DixDestroyAccess); + if (rc == Success) + { + FreeResource(stuff->id, RT_NONE); + return Success; + } + else + { + client->errorValue = stuff->id; + return rc; + } +} + +int +ProcCreateGC(ClientPtr client) +{ + int error, rc; + GC *pGC; + DrawablePtr pDraw; + unsigned len; + REQUEST(xCreateGCReq); + + REQUEST_AT_LEAST_SIZE(xCreateGCReq); + client->errorValue = stuff->gc; + LEGAL_NEW_RESOURCE(stuff->gc, client); + rc = dixLookupDrawable(&pDraw, stuff->drawable, client, 0, + DixGetAttrAccess); + if (rc != Success) + return rc; + + len = client->req_len - bytes_to_int32(sizeof(xCreateGCReq)); + if (len != Ones(stuff->mask)) + return BadLength; + pGC = (GC *)CreateGC(pDraw, stuff->mask, (XID *) &stuff[1], &error, + stuff->gc, client); + if (error != Success) + return error; + if (!AddResource(stuff->gc, RT_GC, (pointer)pGC)) + return BadAlloc; + return Success; +} + +int +ProcChangeGC(ClientPtr client) +{ + GC *pGC; + int result; + unsigned len; + REQUEST(xChangeGCReq); + REQUEST_AT_LEAST_SIZE(xChangeGCReq); + + result = dixLookupGC(&pGC, stuff->gc, client, DixSetAttrAccess); + if (result != Success) + return result; + + len = client->req_len - bytes_to_int32(sizeof(xChangeGCReq)); + if (len != Ones(stuff->mask)) + return BadLength; + + return ChangeGCXIDs(client, pGC, stuff->mask, (CARD32 *) &stuff[1]); +} + +int +ProcCopyGC(ClientPtr client) +{ + GC *dstGC; + GC *pGC; + int result; + REQUEST(xCopyGCReq); + REQUEST_SIZE_MATCH(xCopyGCReq); + + result = dixLookupGC(&pGC, stuff->srcGC, client, DixGetAttrAccess); + if (result != Success) + return result; + result = dixLookupGC(&dstGC, stuff->dstGC, client, DixSetAttrAccess); + if (result != Success) + return result; + if ((dstGC->pScreen != pGC->pScreen) || (dstGC->depth != pGC->depth)) + return BadMatch; + if (stuff->mask & ~GCAllBits) + { + client->errorValue = stuff->mask; + return BadValue; + } + return CopyGC(pGC, dstGC, stuff->mask); +} + +int +ProcSetDashes(ClientPtr client) +{ + GC *pGC; + int result; + REQUEST(xSetDashesReq); + + REQUEST_FIXED_SIZE(xSetDashesReq, stuff->nDashes); + if (stuff->nDashes == 0) + { + client->errorValue = 0; + return BadValue; + } + + result = dixLookupGC(&pGC,stuff->gc, client, DixSetAttrAccess); + if (result != Success) + return result; + + /* If there's an error, either there's no sensible errorValue, + * or there was a dash segment of 0. */ + client->errorValue = 0; + return SetDashes(pGC, stuff->dashOffset, stuff->nDashes, + (unsigned char *)&stuff[1]); +} + +int +ProcSetClipRectangles(ClientPtr client) +{ + int nr, result; + GC *pGC; + REQUEST(xSetClipRectanglesReq); + + REQUEST_AT_LEAST_SIZE(xSetClipRectanglesReq); + if ((stuff->ordering != Unsorted) && (stuff->ordering != YSorted) && + (stuff->ordering != YXSorted) && (stuff->ordering != YXBanded)) + { + client->errorValue = stuff->ordering; + return BadValue; + } + result = dixLookupGC(&pGC,stuff->gc, client, DixSetAttrAccess); + if (result != Success) + return result; + + nr = (client->req_len << 2) - sizeof(xSetClipRectanglesReq); + if (nr & 4) + return BadLength; + nr >>= 3; + return SetClipRects(pGC, stuff->xOrigin, stuff->yOrigin, + nr, (xRectangle *)&stuff[1], (int)stuff->ordering); +} + +int +ProcFreeGC(ClientPtr client) +{ + GC *pGC; + int rc; + REQUEST(xResourceReq); + REQUEST_SIZE_MATCH(xResourceReq); + + rc = dixLookupGC(&pGC, stuff->id, client, DixDestroyAccess); + if (rc != Success) + return rc; + + FreeResource(stuff->id, RT_NONE); + return Success; +} + +int +ProcClearToBackground(ClientPtr client) +{ + REQUEST(xClearAreaReq); + WindowPtr pWin; + int rc; + + REQUEST_SIZE_MATCH(xClearAreaReq); + rc = dixLookupWindow(&pWin, stuff->window, client, DixWriteAccess); + if (rc != Success) + return rc; + if (pWin->drawable.class == InputOnly) + { + client->errorValue = stuff->window; + return BadMatch; + } + if ((stuff->exposures != xTrue) && (stuff->exposures != xFalse)) + { + client->errorValue = stuff->exposures; + return BadValue; + } + (*pWin->drawable.pScreen->ClearToBackground)(pWin, stuff->x, stuff->y, + stuff->width, stuff->height, + (Bool)stuff->exposures); + return Success; +} + +int +ProcCopyArea(ClientPtr client) +{ + DrawablePtr pDst; + DrawablePtr pSrc; + GC *pGC; + REQUEST(xCopyAreaReq); + RegionPtr pRgn; + int rc; + + REQUEST_SIZE_MATCH(xCopyAreaReq); + + VALIDATE_DRAWABLE_AND_GC(stuff->dstDrawable, pDst, DixWriteAccess); + if (stuff->dstDrawable != stuff->srcDrawable) + { + rc = dixLookupDrawable(&pSrc, stuff->srcDrawable, client, 0, + DixReadAccess); + if (rc != Success) + return rc; + if ((pDst->pScreen != pSrc->pScreen) || (pDst->depth != pSrc->depth)) + { + client->errorValue = stuff->dstDrawable; + return BadMatch; + } + } + else + pSrc = pDst; + + pRgn = (*pGC->ops->CopyArea)(pSrc, pDst, pGC, stuff->srcX, stuff->srcY, + stuff->width, stuff->height, + stuff->dstX, stuff->dstY); + if (pGC->graphicsExposures) + { + (*pDst->pScreen->SendGraphicsExpose) + (client, pRgn, stuff->dstDrawable, X_CopyArea, 0); + if (pRgn) + RegionDestroy(pRgn); + } + + return Success; +} + +int +ProcCopyPlane(ClientPtr client) +{ + DrawablePtr psrcDraw, pdstDraw; + GC *pGC; + REQUEST(xCopyPlaneReq); + RegionPtr pRgn; + int rc; + + REQUEST_SIZE_MATCH(xCopyPlaneReq); + + VALIDATE_DRAWABLE_AND_GC(stuff->dstDrawable, pdstDraw, DixWriteAccess); + if (stuff->dstDrawable != stuff->srcDrawable) + { + rc = dixLookupDrawable(&psrcDraw, stuff->srcDrawable, client, 0, + DixReadAccess); + if (rc != Success) + return rc; + + if (pdstDraw->pScreen != psrcDraw->pScreen) + { + client->errorValue = stuff->dstDrawable; + return BadMatch; + } + } + else + psrcDraw = pdstDraw; + + /* Check to see if stuff->bitPlane has exactly ONE good bit set */ + if(stuff->bitPlane == 0 || (stuff->bitPlane & (stuff->bitPlane - 1)) || + (stuff->bitPlane > (1L << (psrcDraw->depth - 1)))) + { + client->errorValue = stuff->bitPlane; + return BadValue; + } + + pRgn = (*pGC->ops->CopyPlane)(psrcDraw, pdstDraw, pGC, stuff->srcX, stuff->srcY, + stuff->width, stuff->height, + stuff->dstX, stuff->dstY, stuff->bitPlane); + if (pGC->graphicsExposures) + { + (*pdstDraw->pScreen->SendGraphicsExpose) + (client, pRgn, stuff->dstDrawable, X_CopyPlane, 0); + if (pRgn) + RegionDestroy(pRgn); + } + return Success; +} + +int +ProcPolyPoint(ClientPtr client) +{ + int npoint; + GC *pGC; + DrawablePtr pDraw; + REQUEST(xPolyPointReq); + + REQUEST_AT_LEAST_SIZE(xPolyPointReq); + if ((stuff->coordMode != CoordModeOrigin) && + (stuff->coordMode != CoordModePrevious)) + { + client->errorValue = stuff->coordMode; + return BadValue; + } + VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, DixWriteAccess); + npoint = bytes_to_int32((client->req_len << 2) - sizeof(xPolyPointReq)); + if (npoint) + (*pGC->ops->PolyPoint)(pDraw, pGC, stuff->coordMode, npoint, + (xPoint *) &stuff[1]); + return Success; +} + +int +ProcPolyLine(ClientPtr client) +{ + int npoint; + GC *pGC; + DrawablePtr pDraw; + REQUEST(xPolyLineReq); + + REQUEST_AT_LEAST_SIZE(xPolyLineReq); + if ((stuff->coordMode != CoordModeOrigin) && + (stuff->coordMode != CoordModePrevious)) + { + client->errorValue = stuff->coordMode; + return BadValue; + } + VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, DixWriteAccess); + npoint = bytes_to_int32((client->req_len << 2) - sizeof(xPolyLineReq)); + if (npoint > 1) + (*pGC->ops->Polylines)(pDraw, pGC, stuff->coordMode, npoint, + (DDXPointPtr) &stuff[1]); + return Success; +} + +int +ProcPolySegment(ClientPtr client) +{ + int nsegs; + GC *pGC; + DrawablePtr pDraw; + REQUEST(xPolySegmentReq); + + REQUEST_AT_LEAST_SIZE(xPolySegmentReq); + VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, DixWriteAccess); + nsegs = (client->req_len << 2) - sizeof(xPolySegmentReq); + if (nsegs & 4) + return BadLength; + nsegs >>= 3; + if (nsegs) + (*pGC->ops->PolySegment)(pDraw, pGC, nsegs, (xSegment *) &stuff[1]); + return Success; +} + +int +ProcPolyRectangle (ClientPtr client) +{ + int nrects; + GC *pGC; + DrawablePtr pDraw; + REQUEST(xPolyRectangleReq); + + REQUEST_AT_LEAST_SIZE(xPolyRectangleReq); + VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, DixWriteAccess); + nrects = (client->req_len << 2) - sizeof(xPolyRectangleReq); + if (nrects & 4) + return BadLength; + nrects >>= 3; + if (nrects) + (*pGC->ops->PolyRectangle)(pDraw, pGC, + nrects, (xRectangle *) &stuff[1]); + return Success; +} + +int +ProcPolyArc(ClientPtr client) +{ + int narcs; + GC *pGC; + DrawablePtr pDraw; + REQUEST(xPolyArcReq); + + REQUEST_AT_LEAST_SIZE(xPolyArcReq); + VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, DixWriteAccess); + narcs = (client->req_len << 2) - sizeof(xPolyArcReq); + if (narcs % sizeof(xArc)) + return BadLength; + narcs /= sizeof(xArc); + if (narcs) + (*pGC->ops->PolyArc)(pDraw, pGC, narcs, (xArc *) &stuff[1]); + return Success; +} + +int +ProcFillPoly(ClientPtr client) +{ + int things; + GC *pGC; + DrawablePtr pDraw; + REQUEST(xFillPolyReq); + + REQUEST_AT_LEAST_SIZE(xFillPolyReq); + if ((stuff->shape != Complex) && (stuff->shape != Nonconvex) && + (stuff->shape != Convex)) + { + client->errorValue = stuff->shape; + return BadValue; + } + if ((stuff->coordMode != CoordModeOrigin) && + (stuff->coordMode != CoordModePrevious)) + { + client->errorValue = stuff->coordMode; + return BadValue; + } + + VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, DixWriteAccess); + things = bytes_to_int32((client->req_len << 2) - sizeof(xFillPolyReq)); + if (things) + (*pGC->ops->FillPolygon) (pDraw, pGC, stuff->shape, + stuff->coordMode, things, + (DDXPointPtr) &stuff[1]); + return Success; +} + +int +ProcPolyFillRectangle(ClientPtr client) +{ + int things; + GC *pGC; + DrawablePtr pDraw; + REQUEST(xPolyFillRectangleReq); + + REQUEST_AT_LEAST_SIZE(xPolyFillRectangleReq); + VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, DixWriteAccess); + things = (client->req_len << 2) - sizeof(xPolyFillRectangleReq); + if (things & 4) + return BadLength; + things >>= 3; + + if (things) + (*pGC->ops->PolyFillRect) (pDraw, pGC, things, + (xRectangle *) &stuff[1]); + return Success; +} + +int +ProcPolyFillArc(ClientPtr client) +{ + int narcs; + GC *pGC; + DrawablePtr pDraw; + REQUEST(xPolyFillArcReq); + + REQUEST_AT_LEAST_SIZE(xPolyFillArcReq); + VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, DixWriteAccess); + narcs = (client->req_len << 2) - sizeof(xPolyFillArcReq); + if (narcs % sizeof(xArc)) + return BadLength; + narcs /= sizeof(xArc); + if (narcs) + (*pGC->ops->PolyFillArc) (pDraw, pGC, narcs, (xArc *) &stuff[1]); + return Success; +} + +#ifdef MATCH_CLIENT_ENDIAN + +int +ServerOrder (void) +{ + int whichbyte = 1; + + if (*((char *) &whichbyte)) + return LSBFirst; + return MSBFirst; +} + +#define ClientOrder(client) ((client)->swapped ? !ServerOrder() : ServerOrder()) + +void +ReformatImage (char *base, int nbytes, int bpp, int order) +{ + switch (bpp) { + case 1: /* yuck */ + if (BITMAP_BIT_ORDER != order) + BitOrderInvert ((unsigned char *) base, nbytes); +#if IMAGE_BYTE_ORDER != BITMAP_BIT_ORDER && BITMAP_SCANLINE_UNIT != 8 + ReformatImage (base, nbytes, BITMAP_SCANLINE_UNIT, order); +#endif + break; + case 4: + break; /* yuck */ + case 8: + break; + case 16: + if (IMAGE_BYTE_ORDER != order) + TwoByteSwap ((unsigned char *) base, nbytes); + break; + case 32: + if (IMAGE_BYTE_ORDER != order) + FourByteSwap ((unsigned char *) base, nbytes); + break; + } +} +#else +#define ReformatImage(b,n,bpp,o) +#endif + +/* 64-bit server notes: the protocol restricts padding of images to + * 8-, 16-, or 32-bits. We would like to have 64-bits for the server + * to use internally. Removes need for internal alignment checking. + * All of the PutImage functions could be changed individually, but + * as currently written, they call other routines which require things + * to be 64-bit padded on scanlines, so we changed things here. + * If an image would be padded differently for 64- versus 32-, then + * copy each scanline to a 64-bit padded scanline. + * Also, we need to make sure that the image is aligned on a 64-bit + * boundary, even if the scanlines are padded to our satisfaction. + */ +int +ProcPutImage(ClientPtr client) +{ + GC *pGC; + DrawablePtr pDraw; + long length; /* length of scanline server padded */ + long lengthProto; /* length of scanline protocol padded */ + char *tmpImage; + REQUEST(xPutImageReq); + + REQUEST_AT_LEAST_SIZE(xPutImageReq); + VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, DixWriteAccess); + if (stuff->format == XYBitmap) + { + if ((stuff->depth != 1) || + (stuff->leftPad >= (unsigned int)screenInfo.bitmapScanlinePad)) + return BadMatch; + length = BitmapBytePad(stuff->width + stuff->leftPad); + } + else if (stuff->format == XYPixmap) + { + if ((pDraw->depth != stuff->depth) || + (stuff->leftPad >= (unsigned int)screenInfo.bitmapScanlinePad)) + return BadMatch; + length = BitmapBytePad(stuff->width + stuff->leftPad); + length *= stuff->depth; + } + else if (stuff->format == ZPixmap) + { + if ((pDraw->depth != stuff->depth) || (stuff->leftPad != 0)) + return BadMatch; + length = PixmapBytePad(stuff->width, stuff->depth); + } + else + { + client->errorValue = stuff->format; + return BadValue; + } + + tmpImage = (char *)&stuff[1]; + lengthProto = length; + + if ((bytes_to_int32(lengthProto * stuff->height) + + bytes_to_int32(sizeof(xPutImageReq))) != client->req_len) + return BadLength; + + ReformatImage (tmpImage, lengthProto * stuff->height, + stuff->format == ZPixmap ? BitsPerPixel (stuff->depth) : 1, + ClientOrder(client)); + + (*pGC->ops->PutImage) (pDraw, pGC, stuff->depth, stuff->dstX, stuff->dstY, + stuff->width, stuff->height, + stuff->leftPad, stuff->format, tmpImage); + + return Success; +} + +static int +DoGetImage(ClientPtr client, int format, Drawable drawable, + int x, int y, int width, int height, + Mask planemask, xGetImageReply **im_return) +{ + DrawablePtr pDraw, pBoundingDraw; + int nlines, linesPerBuf, rc; + int linesDone; + /* coordinates relative to the bounding drawable */ + int relx, rely; + long widthBytesLine, length; + Mask plane = 0; + char *pBuf; + xGetImageReply xgi; + RegionPtr pVisibleRegion = NULL; + + if ((format != XYPixmap) && (format != ZPixmap)) + { + client->errorValue = format; + return BadValue; + } + rc = dixLookupDrawable(&pDraw, drawable, client, 0, DixReadAccess); + if (rc != Success) + return rc; + + memset(&xgi, 0, sizeof(xGetImageReply)); + + relx = x; + rely = y; + + if(pDraw->type == DRAWABLE_WINDOW) + { + WindowPtr pWin = (WindowPtr)pDraw; + + /* "If the drawable is a window, the window must be viewable ... or a + * BadMatch error results" */ + if (!pWin->viewable) + return BadMatch; + + relx += pDraw->x; + rely += pDraw->y; + + if (pDraw->pScreen->GetWindowPixmap) { + PixmapPtr pPix = (*pDraw->pScreen->GetWindowPixmap) (pWin); + + pBoundingDraw = &pPix->drawable; +#ifdef COMPOSITE + relx -= pPix->screen_x; + rely -= pPix->screen_y; +#endif + } + else + { + pBoundingDraw = (DrawablePtr)pDraw->pScreen->root; + } + + xgi.visual = wVisual (pWin); + } + else + { + pBoundingDraw = pDraw; + xgi.visual = None; + } + + /* "If the drawable is a pixmap, the given rectangle must be wholly + * contained within the pixmap, or a BadMatch error results. If the + * drawable is a window [...] it must be the case that if there were no + * inferiors or overlapping windows, the specified rectangle of the window + * would be fully visible on the screen and wholly contained within the + * outside edges of the window, or a BadMatch error results." + * + * We relax the window case slightly to mean that the rectangle must exist + * within the bounds of the window's backing pixmap. In particular, this + * means that a GetImage request may succeed or fail with BadMatch depending + * on whether any of its ancestor windows are redirected. */ + if(relx < 0 || relx + width > (int)pBoundingDraw->width || + rely < 0 || rely + height > (int)pBoundingDraw->height) + return BadMatch; + + xgi.type = X_Reply; + xgi.sequenceNumber = client->sequence; + xgi.depth = pDraw->depth; + if(format == ZPixmap) + { + widthBytesLine = PixmapBytePad(width, pDraw->depth); + length = widthBytesLine * height; + + } + else + { + widthBytesLine = BitmapBytePad(width); + plane = ((Mask)1) << (pDraw->depth - 1); + /* only planes asked for */ + length = widthBytesLine * height * + Ones(planemask & (plane | (plane - 1))); + + } + + xgi.length = length; + + if (im_return) { + pBuf = calloc(1, sz_xGetImageReply + length); + if (!pBuf) + return BadAlloc; + if (widthBytesLine == 0) + linesPerBuf = 0; + else + linesPerBuf = height; + *im_return = (xGetImageReply *)pBuf; + *(xGetImageReply *)pBuf = xgi; + pBuf += sz_xGetImageReply; + } else { + xgi.length = bytes_to_int32(xgi.length); + if (widthBytesLine == 0 || height == 0) + linesPerBuf = 0; + else if (widthBytesLine >= IMAGE_BUFSIZE) + linesPerBuf = 1; + else + { + linesPerBuf = IMAGE_BUFSIZE / widthBytesLine; + if (linesPerBuf > height) + linesPerBuf = height; + } + length = linesPerBuf * widthBytesLine; + if (linesPerBuf < height) + { + /* we have to make sure intermediate buffers don't need padding */ + while ((linesPerBuf > 1) && + (length & ((1L << LOG2_BYTES_PER_SCANLINE_PAD)-1))) + { + linesPerBuf--; + length -= widthBytesLine; + } + while (length & ((1L << LOG2_BYTES_PER_SCANLINE_PAD)-1)) + { + linesPerBuf++; + length += widthBytesLine; + } + } + if(!(pBuf = calloc(1, length))) + return BadAlloc; + WriteReplyToClient(client, sizeof (xGetImageReply), &xgi); + } + + if (pDraw->type == DRAWABLE_WINDOW) + { + pVisibleRegion = NotClippedByChildren((WindowPtr)pDraw); + if (pVisibleRegion) + { + RegionTranslate(pVisibleRegion, -pDraw->x, -pDraw->y); + } + } + + if (linesPerBuf == 0) + { + /* nothing to do */ + } + else if (format == ZPixmap) + { + linesDone = 0; + while (height - linesDone > 0) + { + nlines = min(linesPerBuf, height - linesDone); + (*pDraw->pScreen->GetImage) (pDraw, + x, + y + linesDone, + width, + nlines, + format, + planemask, + (pointer) pBuf); + if (pVisibleRegion) + XaceCensorImage(client, pVisibleRegion, widthBytesLine, + pDraw, x, y + linesDone, width, + nlines, format, pBuf); + + /* Note that this is NOT a call to WriteSwappedDataToClient, + as we do NOT byte swap */ + if (!im_return) + { + ReformatImage (pBuf, (int)(nlines * widthBytesLine), + BitsPerPixel (pDraw->depth), + ClientOrder(client)); + +/* Don't split me, gcc pukes when you do */ + (void)WriteToClient(client, + (int)(nlines * widthBytesLine), + pBuf); + } + linesDone += nlines; + } + } + else /* XYPixmap */ + { + for (; plane; plane >>= 1) + { + if (planemask & plane) + { + linesDone = 0; + while (height - linesDone > 0) + { + nlines = min(linesPerBuf, height - linesDone); + (*pDraw->pScreen->GetImage) (pDraw, + x, + y + linesDone, + width, + nlines, + format, + plane, + (pointer)pBuf); + if (pVisibleRegion) + XaceCensorImage(client, pVisibleRegion, + widthBytesLine, + pDraw, x, y + linesDone, width, + nlines, format, pBuf); + + /* Note: NOT a call to WriteSwappedDataToClient, + as we do NOT byte swap */ + if (im_return) { + pBuf += nlines * widthBytesLine; + } else { + ReformatImage (pBuf, + (int)(nlines * widthBytesLine), + 1, + ClientOrder (client)); + +/* Don't split me, gcc pukes when you do */ + (void)WriteToClient(client, + (int)(nlines * widthBytesLine), + pBuf); + } + linesDone += nlines; + } + } + } + } + if (pVisibleRegion) + RegionDestroy(pVisibleRegion); + if (!im_return) + free(pBuf); + return Success; +} + +int +ProcGetImage(ClientPtr client) +{ + REQUEST(xGetImageReq); + + REQUEST_SIZE_MATCH(xGetImageReq); + + return DoGetImage(client, stuff->format, stuff->drawable, + stuff->x, stuff->y, + (int)stuff->width, (int)stuff->height, + stuff->planeMask, (xGetImageReply **)NULL); +} + +int +ProcPolyText(ClientPtr client) +{ + int err; + REQUEST(xPolyTextReq); + DrawablePtr pDraw; + GC *pGC; + + REQUEST_AT_LEAST_SIZE(xPolyTextReq); + VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, DixWriteAccess); + + err = PolyText(client, + pDraw, + pGC, + (unsigned char *)&stuff[1], + ((unsigned char *) stuff) + (client->req_len << 2), + stuff->x, + stuff->y, + stuff->reqType, + stuff->drawable); + + if (err == Success) + { + return Success; + } + else + return err; +} + +int +ProcImageText8(ClientPtr client) +{ + int err; + DrawablePtr pDraw; + GC *pGC; + + REQUEST(xImageTextReq); + + REQUEST_FIXED_SIZE(xImageTextReq, stuff->nChars); + VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, DixWriteAccess); + + err = ImageText(client, + pDraw, + pGC, + stuff->nChars, + (unsigned char *)&stuff[1], + stuff->x, + stuff->y, + stuff->reqType, + stuff->drawable); + + if (err == Success) + { + return Success; + } + else + return err; +} + +int +ProcImageText16(ClientPtr client) +{ + int err; + DrawablePtr pDraw; + GC *pGC; + + REQUEST(xImageTextReq); + + REQUEST_FIXED_SIZE(xImageTextReq, stuff->nChars << 1); + VALIDATE_DRAWABLE_AND_GC(stuff->drawable, pDraw, DixWriteAccess); + + err = ImageText(client, + pDraw, + pGC, + stuff->nChars, + (unsigned char *)&stuff[1], + stuff->x, + stuff->y, + stuff->reqType, + stuff->drawable); + + if (err == Success) + { + return Success; + } + else + return err; +} + + +int +ProcCreateColormap(ClientPtr client) +{ + VisualPtr pVisual; + ColormapPtr pmap; + Colormap mid; + WindowPtr pWin; + ScreenPtr pScreen; + REQUEST(xCreateColormapReq); + int i, result; + + REQUEST_SIZE_MATCH(xCreateColormapReq); + + if ((stuff->alloc != AllocNone) && (stuff->alloc != AllocAll)) + { + client->errorValue = stuff->alloc; + return BadValue; + } + mid = stuff->mid; + LEGAL_NEW_RESOURCE(mid, client); + result = dixLookupWindow(&pWin, stuff->window, client, DixGetAttrAccess); + if (result != Success) + return result; + + pScreen = pWin->drawable.pScreen; + for (i = 0, pVisual = pScreen->visuals; + i < pScreen->numVisuals; + i++, pVisual++) + { + if (pVisual->vid != stuff->visual) + continue; + return CreateColormap(mid, pScreen, pVisual, &pmap, + (int)stuff->alloc, client->index); + } + client->errorValue = stuff->visual; + return BadMatch; +} + +int +ProcFreeColormap(ClientPtr client) +{ + ColormapPtr pmap; + int rc; + REQUEST(xResourceReq); + + REQUEST_SIZE_MATCH(xResourceReq); + rc = dixLookupResourceByType((pointer *)&pmap, stuff->id, RT_COLORMAP, client, + DixDestroyAccess); + if (rc == Success) + { + /* Freeing a default colormap is a no-op */ + if (!(pmap->flags & IsDefault)) + FreeResource(stuff->id, RT_NONE); + return Success; + } + else + { + client->errorValue = stuff->id; + return rc; + } +} + + +int +ProcCopyColormapAndFree(ClientPtr client) +{ + Colormap mid; + ColormapPtr pSrcMap; + REQUEST(xCopyColormapAndFreeReq); + int rc; + + REQUEST_SIZE_MATCH(xCopyColormapAndFreeReq); + mid = stuff->mid; + LEGAL_NEW_RESOURCE(mid, client); + rc = dixLookupResourceByType((pointer *)&pSrcMap, stuff->srcCmap, RT_COLORMAP, + client, DixReadAccess|DixRemoveAccess); + if (rc == Success) + return CopyColormapAndFree(mid, pSrcMap, client->index); + client->errorValue = stuff->srcCmap; + return rc; +} + +int +ProcInstallColormap(ClientPtr client) +{ + ColormapPtr pcmp; + int rc; + REQUEST(xResourceReq); + REQUEST_SIZE_MATCH(xResourceReq); + + rc = dixLookupResourceByType((pointer *)&pcmp, stuff->id, RT_COLORMAP, client, + DixInstallAccess); + if (rc != Success) + goto out; + + rc = XaceHook(XACE_SCREEN_ACCESS, client, pcmp->pScreen, DixSetAttrAccess); + if (rc != Success) { + if (rc == BadValue) + rc = BadColor; + goto out; + } + + (*(pcmp->pScreen->InstallColormap)) (pcmp); + return Success; + +out: + client->errorValue = stuff->id; + return rc; +} + +int +ProcUninstallColormap(ClientPtr client) +{ + ColormapPtr pcmp; + int rc; + REQUEST(xResourceReq); + REQUEST_SIZE_MATCH(xResourceReq); + + rc = dixLookupResourceByType((pointer *)&pcmp, stuff->id, RT_COLORMAP, client, + DixUninstallAccess); + if (rc != Success) + goto out; + + rc = XaceHook(XACE_SCREEN_ACCESS, client, pcmp->pScreen, DixSetAttrAccess); + if (rc != Success) { + if (rc == BadValue) + rc = BadColor; + goto out; + } + + if(pcmp->mid != pcmp->pScreen->defColormap) + (*(pcmp->pScreen->UninstallColormap)) (pcmp); + return Success; + +out: + client->errorValue = stuff->id; + return rc; +} + +int +ProcListInstalledColormaps(ClientPtr client) +{ + xListInstalledColormapsReply *preply; + int nummaps, rc; + WindowPtr pWin; + REQUEST(xResourceReq); + REQUEST_SIZE_MATCH(xResourceReq); + + rc = dixLookupWindow(&pWin, stuff->id, client, DixGetAttrAccess); + if (rc != Success) + return rc; + + rc = XaceHook(XACE_SCREEN_ACCESS, client, pWin->drawable.pScreen, + DixGetAttrAccess); + if (rc != Success) + return rc; + + preply = malloc(sizeof(xListInstalledColormapsReply) + + pWin->drawable.pScreen->maxInstalledCmaps * + sizeof(Colormap)); + if(!preply) + return BadAlloc; + + preply->type = X_Reply; + preply->sequenceNumber = client->sequence; + nummaps = (*pWin->drawable.pScreen->ListInstalledColormaps) + (pWin->drawable.pScreen, (Colormap *)&preply[1]); + preply->nColormaps = nummaps; + preply->length = nummaps; + WriteReplyToClient(client, sizeof (xListInstalledColormapsReply), preply); + client->pSwapReplyFunc = (ReplySwapPtr) Swap32Write; + WriteSwappedDataToClient(client, nummaps * sizeof(Colormap), &preply[1]); + free(preply); + return Success; +} + +int +ProcAllocColor (ClientPtr client) +{ + ColormapPtr pmap; + int rc; + xAllocColorReply acr; + REQUEST(xAllocColorReq); + + REQUEST_SIZE_MATCH(xAllocColorReq); + rc = dixLookupResourceByType((pointer *)&pmap, stuff->cmap, RT_COLORMAP, client, + DixAddAccess); + if (rc == Success) + { + acr.type = X_Reply; + acr.length = 0; + acr.sequenceNumber = client->sequence; + acr.red = stuff->red; + acr.green = stuff->green; + acr.blue = stuff->blue; + acr.pixel = 0; + if( (rc = AllocColor(pmap, &acr.red, &acr.green, &acr.blue, + &acr.pixel, client->index)) ) + return rc; +#ifdef PANORAMIX + if (noPanoramiXExtension || !pmap->pScreen->myNum) +#endif + WriteReplyToClient(client, sizeof(xAllocColorReply), &acr); + return Success; + + } + else + { + client->errorValue = stuff->cmap; + return rc; + } +} + +int +ProcAllocNamedColor (ClientPtr client) +{ + ColormapPtr pcmp; + int rc; + REQUEST(xAllocNamedColorReq); + + REQUEST_FIXED_SIZE(xAllocNamedColorReq, stuff->nbytes); + rc = dixLookupResourceByType((pointer *)&pcmp, stuff->cmap, RT_COLORMAP, client, + DixAddAccess); + if (rc == Success) + { + xAllocNamedColorReply ancr; + + ancr.type = X_Reply; + ancr.length = 0; + ancr.sequenceNumber = client->sequence; + + if(OsLookupColor(pcmp->pScreen->myNum, (char *)&stuff[1], stuff->nbytes, + &ancr.exactRed, &ancr.exactGreen, &ancr.exactBlue)) + { + ancr.screenRed = ancr.exactRed; + ancr.screenGreen = ancr.exactGreen; + ancr.screenBlue = ancr.exactBlue; + ancr.pixel = 0; + if( (rc = AllocColor(pcmp, + &ancr.screenRed, &ancr.screenGreen, &ancr.screenBlue, + &ancr.pixel, client->index)) ) + return rc; +#ifdef PANORAMIX + if (noPanoramiXExtension || !pcmp->pScreen->myNum) +#endif + WriteReplyToClient(client, sizeof (xAllocNamedColorReply), &ancr); + return Success; + } + else + return BadName; + + } + else + { + client->errorValue = stuff->cmap; + return rc; + } +} + +int +ProcAllocColorCells (ClientPtr client) +{ + ColormapPtr pcmp; + int rc; + REQUEST(xAllocColorCellsReq); + + REQUEST_SIZE_MATCH(xAllocColorCellsReq); + rc = dixLookupResourceByType((pointer *)&pcmp, stuff->cmap, RT_COLORMAP, client, + DixAddAccess); + if (rc == Success) + { + xAllocColorCellsReply accr; + int npixels, nmasks; + long length; + Pixel *ppixels, *pmasks; + + npixels = stuff->colors; + if (!npixels) + { + client->errorValue = npixels; + return BadValue; + } + if (stuff->contiguous != xTrue && stuff->contiguous != xFalse) + { + client->errorValue = stuff->contiguous; + return BadValue; + } + nmasks = stuff->planes; + length = ((long)npixels + (long)nmasks) * sizeof(Pixel); + ppixels = malloc(length); + if(!ppixels) + return BadAlloc; + pmasks = ppixels + npixels; + + if( (rc = AllocColorCells(client->index, pcmp, npixels, nmasks, + (Bool)stuff->contiguous, ppixels, pmasks)) ) + { + free(ppixels); + return rc; + } +#ifdef PANORAMIX + if (noPanoramiXExtension || !pcmp->pScreen->myNum) +#endif + { + accr.type = X_Reply; + accr.length = bytes_to_int32(length); + accr.sequenceNumber = client->sequence; + accr.nPixels = npixels; + accr.nMasks = nmasks; + WriteReplyToClient(client, sizeof (xAllocColorCellsReply), &accr); + client->pSwapReplyFunc = (ReplySwapPtr) Swap32Write; + WriteSwappedDataToClient(client, length, ppixels); + } + free(ppixels); + return Success; + } + else + { + client->errorValue = stuff->cmap; + return rc; + } +} + +int +ProcAllocColorPlanes(ClientPtr client) +{ + ColormapPtr pcmp; + int rc; + REQUEST(xAllocColorPlanesReq); + + REQUEST_SIZE_MATCH(xAllocColorPlanesReq); + rc = dixLookupResourceByType((pointer *)&pcmp, stuff->cmap, RT_COLORMAP, client, + DixAddAccess); + if (rc == Success) + { + xAllocColorPlanesReply acpr; + int npixels; + long length; + Pixel *ppixels; + + npixels = stuff->colors; + if (!npixels) + { + client->errorValue = npixels; + return BadValue; + } + if (stuff->contiguous != xTrue && stuff->contiguous != xFalse) + { + client->errorValue = stuff->contiguous; + return BadValue; + } + acpr.type = X_Reply; + acpr.sequenceNumber = client->sequence; + acpr.nPixels = npixels; + length = (long)npixels * sizeof(Pixel); + ppixels = malloc(length); + if(!ppixels) + return BadAlloc; + if( (rc = AllocColorPlanes(client->index, pcmp, npixels, + (int)stuff->red, (int)stuff->green, (int)stuff->blue, + (Bool)stuff->contiguous, ppixels, + &acpr.redMask, &acpr.greenMask, &acpr.blueMask)) ) + { + free(ppixels); + return rc; + } + acpr.length = bytes_to_int32(length); +#ifdef PANORAMIX + if (noPanoramiXExtension || !pcmp->pScreen->myNum) +#endif + { + WriteReplyToClient(client, sizeof(xAllocColorPlanesReply), &acpr); + client->pSwapReplyFunc = (ReplySwapPtr) Swap32Write; + WriteSwappedDataToClient(client, length, ppixels); + } + free(ppixels); + return Success; + } + else + { + client->errorValue = stuff->cmap; + return rc; + } +} + +int +ProcFreeColors(ClientPtr client) +{ + ColormapPtr pcmp; + int rc; + REQUEST(xFreeColorsReq); + + REQUEST_AT_LEAST_SIZE(xFreeColorsReq); + rc = dixLookupResourceByType((pointer *)&pcmp, stuff->cmap, RT_COLORMAP, client, + DixRemoveAccess); + if (rc == Success) + { + int count; + + if(pcmp->flags & AllAllocated) + return BadAccess; + count = bytes_to_int32((client->req_len << 2) - sizeof(xFreeColorsReq)); + return FreeColors(pcmp, client->index, count, + (Pixel *)&stuff[1], (Pixel)stuff->planeMask); + } + else + { + client->errorValue = stuff->cmap; + return rc; + } +} + +int +ProcStoreColors (ClientPtr client) +{ + ColormapPtr pcmp; + int rc; + REQUEST(xStoreColorsReq); + + REQUEST_AT_LEAST_SIZE(xStoreColorsReq); + rc = dixLookupResourceByType((pointer *)&pcmp, stuff->cmap, RT_COLORMAP, client, + DixWriteAccess); + if (rc == Success) + { + int count; + + count = (client->req_len << 2) - sizeof(xStoreColorsReq); + if (count % sizeof(xColorItem)) + return BadLength; + count /= sizeof(xColorItem); + return StoreColors(pcmp, count, (xColorItem *)&stuff[1], client); + } + else + { + client->errorValue = stuff->cmap; + return rc; + } +} + +int +ProcStoreNamedColor (ClientPtr client) +{ + ColormapPtr pcmp; + int rc; + REQUEST(xStoreNamedColorReq); + + REQUEST_FIXED_SIZE(xStoreNamedColorReq, stuff->nbytes); + rc = dixLookupResourceByType((pointer *)&pcmp, stuff->cmap, RT_COLORMAP, client, + DixWriteAccess); + if (rc == Success) + { + xColorItem def; + + if(OsLookupColor(pcmp->pScreen->myNum, (char *)&stuff[1], + stuff->nbytes, &def.red, &def.green, &def.blue)) + { + def.flags = stuff->flags; + def.pixel = stuff->pixel; + return StoreColors(pcmp, 1, &def, client); + } + return BadName; + } + else + { + client->errorValue = stuff->cmap; + return rc; + } +} + +int +ProcQueryColors(ClientPtr client) +{ + ColormapPtr pcmp; + int rc; + REQUEST(xQueryColorsReq); + + REQUEST_AT_LEAST_SIZE(xQueryColorsReq); + rc = dixLookupResourceByType((pointer *)&pcmp, stuff->cmap, RT_COLORMAP, client, + DixReadAccess); + if (rc == Success) + { + int count; + xrgb *prgbs; + xQueryColorsReply qcr; + + count = bytes_to_int32((client->req_len << 2) - sizeof(xQueryColorsReq)); + prgbs = calloc(1, count * sizeof(xrgb)); + if(!prgbs && count) + return BadAlloc; + if( (rc = QueryColors(pcmp, count, (Pixel *)&stuff[1], prgbs, client)) ) + { + free(prgbs); + return rc; + } + memset(&qcr, 0, sizeof(xQueryColorsReply)); + qcr.type = X_Reply; + qcr.length = bytes_to_int32(count * sizeof(xrgb)); + qcr.sequenceNumber = client->sequence; + qcr.nColors = count; + WriteReplyToClient(client, sizeof(xQueryColorsReply), &qcr); + if (count) + { + client->pSwapReplyFunc = (ReplySwapPtr) SQColorsExtend; + WriteSwappedDataToClient(client, count * sizeof(xrgb), prgbs); + } + free(prgbs); + return Success; + + } + else + { + client->errorValue = stuff->cmap; + return rc; + } +} + +int +ProcLookupColor(ClientPtr client) +{ + ColormapPtr pcmp; + int rc; + REQUEST(xLookupColorReq); + + REQUEST_FIXED_SIZE(xLookupColorReq, stuff->nbytes); + rc = dixLookupResourceByType((pointer *)&pcmp, stuff->cmap, RT_COLORMAP, client, + DixReadAccess); + if (rc == Success) + { + xLookupColorReply lcr; + + if(OsLookupColor(pcmp->pScreen->myNum, (char *)&stuff[1], stuff->nbytes, + &lcr.exactRed, &lcr.exactGreen, &lcr.exactBlue)) + { + lcr.type = X_Reply; + lcr.length = 0; + lcr.sequenceNumber = client->sequence; + lcr.screenRed = lcr.exactRed; + lcr.screenGreen = lcr.exactGreen; + lcr.screenBlue = lcr.exactBlue; + (*pcmp->pScreen->ResolveColor)(&lcr.screenRed, + &lcr.screenGreen, + &lcr.screenBlue, + pcmp->pVisual); + WriteReplyToClient(client, sizeof(xLookupColorReply), &lcr); + return Success; + } + return BadName; + } + else + { + client->errorValue = stuff->cmap; + return rc; + } +} + +int +ProcCreateCursor (ClientPtr client) +{ + CursorPtr pCursor; + PixmapPtr src; + PixmapPtr msk; + unsigned char * srcbits; + unsigned char * mskbits; + unsigned short width, height; + long n; + CursorMetricRec cm; + int rc; + + REQUEST(xCreateCursorReq); + + REQUEST_SIZE_MATCH(xCreateCursorReq); + LEGAL_NEW_RESOURCE(stuff->cid, client); + + rc = dixLookupResourceByType((pointer *)&src, stuff->source, RT_PIXMAP, client, + DixReadAccess); + if (rc != Success) { + client->errorValue = stuff->source; + return rc; + } + + rc = dixLookupResourceByType((pointer *)&msk, stuff->mask, RT_PIXMAP, client, + DixReadAccess); + if (rc != Success) + { + if (stuff->mask != None) + { + client->errorValue = stuff->mask; + return rc; + } + } + else if ( src->drawable.width != msk->drawable.width + || src->drawable.height != msk->drawable.height + || src->drawable.depth != 1 + || msk->drawable.depth != 1) + return BadMatch; + + width = src->drawable.width; + height = src->drawable.height; + + if ( stuff->x > width + || stuff->y > height ) + return BadMatch; + + n = BitmapBytePad(width)*height; + srcbits = calloc(1, n); + if (!srcbits) + return BadAlloc; + mskbits = malloc(n); + if (!mskbits) + { + free(srcbits); + return BadAlloc; + } + + (* src->drawable.pScreen->GetImage)( (DrawablePtr)src, 0, 0, width, height, + XYPixmap, 1, (pointer)srcbits); + if ( msk == (PixmapPtr)NULL) + { + unsigned char *bits = mskbits; + while (--n >= 0) + *bits++ = ~0; + } + else + { + /* zeroing the (pad) bits helps some ddx cursor handling */ + memset((char *)mskbits, 0, n); + (* msk->drawable.pScreen->GetImage)( (DrawablePtr)msk, 0, 0, width, + height, XYPixmap, 1, (pointer)mskbits); + } + cm.width = width; + cm.height = height; + cm.xhot = stuff->x; + cm.yhot = stuff->y; + rc = AllocARGBCursor(srcbits, mskbits, NULL, &cm, + stuff->foreRed, stuff->foreGreen, stuff->foreBlue, + stuff->backRed, stuff->backGreen, stuff->backBlue, + &pCursor, client, stuff->cid); + + if (rc != Success) + return rc; + if (!AddResource(stuff->cid, RT_CURSOR, (pointer)pCursor)) + return BadAlloc; + + return Success; +} + +int +ProcCreateGlyphCursor (ClientPtr client) +{ + CursorPtr pCursor; + int res; + + REQUEST(xCreateGlyphCursorReq); + + REQUEST_SIZE_MATCH(xCreateGlyphCursorReq); + LEGAL_NEW_RESOURCE(stuff->cid, client); + + res = AllocGlyphCursor(stuff->source, stuff->sourceChar, + stuff->mask, stuff->maskChar, + stuff->foreRed, stuff->foreGreen, stuff->foreBlue, + stuff->backRed, stuff->backGreen, stuff->backBlue, + &pCursor, client, stuff->cid); + if (res != Success) + return res; + if (AddResource(stuff->cid, RT_CURSOR, (pointer)pCursor)) + return Success; + return BadAlloc; +} + + +int +ProcFreeCursor (ClientPtr client) +{ + CursorPtr pCursor; + int rc; + REQUEST(xResourceReq); + + REQUEST_SIZE_MATCH(xResourceReq); + rc = dixLookupResourceByType((pointer *)&pCursor, stuff->id, RT_CURSOR, client, + DixDestroyAccess); + if (rc == Success) + { + FreeResource(stuff->id, RT_NONE); + return Success; + } + else + { + client->errorValue = stuff->id; + return rc; + } +} + +int +ProcQueryBestSize (ClientPtr client) +{ + xQueryBestSizeReply reply; + DrawablePtr pDraw; + ScreenPtr pScreen; + int rc; + REQUEST(xQueryBestSizeReq); + REQUEST_SIZE_MATCH(xQueryBestSizeReq); + + if ((stuff->class != CursorShape) && + (stuff->class != TileShape) && + (stuff->class != StippleShape)) + { + client->errorValue = stuff->class; + return BadValue; + } + + rc = dixLookupDrawable(&pDraw, stuff->drawable, client, M_ANY, + DixGetAttrAccess); + if (rc != Success) + return rc; + if (stuff->class != CursorShape && pDraw->type == UNDRAWABLE_WINDOW) + return BadMatch; + pScreen = pDraw->pScreen; + rc = XaceHook(XACE_SCREEN_ACCESS, client, pScreen, DixGetAttrAccess); + if (rc != Success) + return rc; + (* pScreen->QueryBestSize)(stuff->class, &stuff->width, + &stuff->height, pScreen); + memset(&reply, 0, sizeof(xQueryBestSizeReply)); + reply.type = X_Reply; + reply.length = 0; + reply.sequenceNumber = client->sequence; + reply.width = stuff->width; + reply.height = stuff->height; + WriteReplyToClient(client, sizeof(xQueryBestSizeReply), &reply); + return Success; +} + + +int +ProcSetScreenSaver (ClientPtr client) +{ + int rc, i, blankingOption, exposureOption; + REQUEST(xSetScreenSaverReq); + REQUEST_SIZE_MATCH(xSetScreenSaverReq); + + for (i = 0; i < screenInfo.numScreens; i++) { + rc = XaceHook(XACE_SCREENSAVER_ACCESS, client, screenInfo.screens[i], + DixSetAttrAccess); + if (rc != Success) + return rc; + } + + blankingOption = stuff->preferBlank; + if ((blankingOption != DontPreferBlanking) && + (blankingOption != PreferBlanking) && + (blankingOption != DefaultBlanking)) + { + client->errorValue = blankingOption; + return BadValue; + } + exposureOption = stuff->allowExpose; + if ((exposureOption != DontAllowExposures) && + (exposureOption != AllowExposures) && + (exposureOption != DefaultExposures)) + { + client->errorValue = exposureOption; + return BadValue; + } + if (stuff->timeout < -1) + { + client->errorValue = stuff->timeout; + return BadValue; + } + if (stuff->interval < -1) + { + client->errorValue = stuff->interval; + return BadValue; + } + + if (blankingOption == DefaultBlanking) + ScreenSaverBlanking = defaultScreenSaverBlanking; + else + ScreenSaverBlanking = blankingOption; + if (exposureOption == DefaultExposures) + ScreenSaverAllowExposures = defaultScreenSaverAllowExposures; + else + ScreenSaverAllowExposures = exposureOption; + + if (stuff->timeout >= 0) + ScreenSaverTime = stuff->timeout * MILLI_PER_SECOND; + else + ScreenSaverTime = defaultScreenSaverTime; + if (stuff->interval >= 0) + ScreenSaverInterval = stuff->interval * MILLI_PER_SECOND; + else + ScreenSaverInterval = defaultScreenSaverInterval; + + SetScreenSaverTimer(); + return Success; +} + +int +ProcGetScreenSaver(ClientPtr client) +{ + xGetScreenSaverReply rep; + int rc, i; + REQUEST_SIZE_MATCH(xReq); + + for (i = 0; i < screenInfo.numScreens; i++) { + rc = XaceHook(XACE_SCREENSAVER_ACCESS, client, screenInfo.screens[i], + DixGetAttrAccess); + if (rc != Success) + return rc; + } + + rep.type = X_Reply; + rep.length = 0; + rep.sequenceNumber = client->sequence; + rep.timeout = ScreenSaverTime / MILLI_PER_SECOND; + rep.interval = ScreenSaverInterval / MILLI_PER_SECOND; + rep.preferBlanking = ScreenSaverBlanking; + rep.allowExposures = ScreenSaverAllowExposures; + WriteReplyToClient(client, sizeof(xGetScreenSaverReply), &rep); + return Success; +} + +int +ProcChangeHosts(ClientPtr client) +{ + REQUEST(xChangeHostsReq); + + REQUEST_FIXED_SIZE(xChangeHostsReq, stuff->hostLength); + + if(stuff->mode == HostInsert) + return AddHost(client, (int)stuff->hostFamily, + stuff->hostLength, (pointer)&stuff[1]); + if (stuff->mode == HostDelete) + return RemoveHost(client, (int)stuff->hostFamily, + stuff->hostLength, (pointer)&stuff[1]); + client->errorValue = stuff->mode; + return BadValue; +} + +int +ProcListHosts(ClientPtr client) +{ + xListHostsReply reply; + int len, nHosts, result; + pointer pdata; + /* REQUEST(xListHostsReq); */ + + REQUEST_SIZE_MATCH(xListHostsReq); + + /* untrusted clients can't list hosts */ + result = XaceHook(XACE_SERVER_ACCESS, client, DixReadAccess); + if (result != Success) + return result; + + result = GetHosts(&pdata, &nHosts, &len, &reply.enabled); + if (result != Success) + return result; + reply.type = X_Reply; + reply.sequenceNumber = client->sequence; + reply.nHosts = nHosts; + reply.length = bytes_to_int32(len); + WriteReplyToClient(client, sizeof(xListHostsReply), &reply); + if (nHosts) + { + client->pSwapReplyFunc = (ReplySwapPtr) SLHostsExtend; + WriteSwappedDataToClient(client, len, pdata); + } + free(pdata); + return Success; +} + +int +ProcChangeAccessControl(ClientPtr client) +{ + REQUEST(xSetAccessControlReq); + + REQUEST_SIZE_MATCH(xSetAccessControlReq); + if ((stuff->mode != EnableAccess) && (stuff->mode != DisableAccess)) + { + client->errorValue = stuff->mode; + return BadValue; + } + return ChangeAccessControl(client, stuff->mode == EnableAccess); +} + +/********************* + * CloseDownRetainedResources + * + * Find all clients that are gone and have terminated in RetainTemporary + * and destroy their resources. + *********************/ + +static void +CloseDownRetainedResources(void) +{ + int i; + ClientPtr client; + + for (i=1; i<currentMaxClients; i++) + { + client = clients[i]; + if (client && (client->closeDownMode == RetainTemporary) + && (client->clientGone)) + CloseDownClient(client); + } +} + +int +ProcKillClient(ClientPtr client) +{ + REQUEST(xResourceReq); + ClientPtr killclient; + int rc; + + REQUEST_SIZE_MATCH(xResourceReq); + if (stuff->id == AllTemporary) + { + CloseDownRetainedResources(); + return Success; + } + + rc = dixLookupClient(&killclient, stuff->id, client, DixDestroyAccess); + if (rc == Success) { + CloseDownClient(killclient); + /* if an LBX proxy gets killed, isItTimeToYield will be set */ + if (isItTimeToYield || (client == killclient)) + { + /* force yield and return Success, so that Dispatch() + * doesn't try to touch client + */ + isItTimeToYield = TRUE; + return Success; + } + return Success; + } + else + return rc; +} + +int +ProcSetFontPath(ClientPtr client) +{ + unsigned char *ptr; + unsigned long nbytes, total; + long nfonts; + int n; + REQUEST(xSetFontPathReq); + + REQUEST_AT_LEAST_SIZE(xSetFontPathReq); + + nbytes = (client->req_len << 2) - sizeof(xSetFontPathReq); + total = nbytes; + ptr = (unsigned char *)&stuff[1]; + nfonts = stuff->nFonts; + while (--nfonts >= 0) + { + if ((total == 0) || (total < (n = (*ptr + 1)))) + return BadLength; + total -= n; + ptr += n; + } + if (total >= 4) + return BadLength; + return SetFontPath(client, stuff->nFonts, (unsigned char *)&stuff[1]); +} + +int +ProcGetFontPath(ClientPtr client) +{ + xGetFontPathReply reply; + int rc, stringLens, numpaths; + unsigned char *bufferStart; + /* REQUEST (xReq); */ + + REQUEST_SIZE_MATCH(xReq); + rc = GetFontPath(client, &numpaths, &stringLens, &bufferStart); + if (rc != Success) + return rc; + + reply.type = X_Reply; + reply.sequenceNumber = client->sequence; + reply.length = bytes_to_int32(stringLens + numpaths); + reply.nPaths = numpaths; + + WriteReplyToClient(client, sizeof(xGetFontPathReply), &reply); + if (stringLens || numpaths) + (void)WriteToClient(client, stringLens + numpaths, (char *)bufferStart); + return Success; +} + +int +ProcChangeCloseDownMode(ClientPtr client) +{ + int rc; + REQUEST(xSetCloseDownModeReq); + REQUEST_SIZE_MATCH(xSetCloseDownModeReq); + + rc = XaceHook(XACE_CLIENT_ACCESS, client, client, DixManageAccess); + if (rc != Success) + return rc; + + if ((stuff->mode == AllTemporary) || + (stuff->mode == RetainPermanent) || + (stuff->mode == RetainTemporary)) + { + client->closeDownMode = stuff->mode; + return Success; + } + else + { + client->errorValue = stuff->mode; + return BadValue; + } +} + +int ProcForceScreenSaver(ClientPtr client) +{ + int rc; + REQUEST(xForceScreenSaverReq); + + REQUEST_SIZE_MATCH(xForceScreenSaverReq); + + if ((stuff->mode != ScreenSaverReset) && + (stuff->mode != ScreenSaverActive)) + { + client->errorValue = stuff->mode; + return BadValue; + } + rc = dixSaveScreens(client, SCREEN_SAVER_FORCER, (int)stuff->mode); + if (rc != Success) + return rc; + return Success; +} + +int ProcNoOperation(ClientPtr client) +{ + REQUEST_AT_LEAST_SIZE(xReq); + + /* noop -- don't do anything */ + return Success; +} + +/********************** + * CloseDownClient + * + * Client can either mark his resources destroy or retain. If retained and + * then killed again, the client is really destroyed. + *********************/ + +char dispatchExceptionAtReset = DE_RESET; + +void +CloseDownClient(ClientPtr client) +{ + Bool really_close_down = client->clientGone || + client->closeDownMode == DestroyAll; + + if (!client->clientGone) + { + /* ungrab server if grabbing client dies */ + if (grabState != GrabNone && grabClient == client) + { + UngrabServer(client); + } + BITCLEAR(grabWaiters, client->index); + DeleteClientFromAnySelections(client); + ReleaseActiveGrabs(client); + DeleteClientFontStuff(client); + if (!really_close_down) + { + /* This frees resources that should never be retained + * no matter what the close down mode is. Actually we + * could do this unconditionally, but it's probably + * better not to traverse all the client's resources + * twice (once here, once a few lines down in + * FreeClientResources) in the common case of + * really_close_down == TRUE. + */ + FreeClientNeverRetainResources(client); + client->clientState = ClientStateRetained; + if (ClientStateCallback) + { + NewClientInfoRec clientinfo; + + clientinfo.client = client; + clientinfo.prefix = (xConnSetupPrefix *)NULL; + clientinfo.setup = (xConnSetup *) NULL; + CallCallbacks((&ClientStateCallback), (pointer)&clientinfo); + } + } + client->clientGone = TRUE; /* so events aren't sent to client */ + if (ClientIsAsleep(client)) + ClientSignal (client); + ProcessWorkQueueZombies(); + CloseDownConnection(client); + + /* If the client made it to the Running stage, nClients has + * been incremented on its behalf, so we need to decrement it + * now. If it hasn't gotten to Running, nClients has *not* + * been incremented, so *don't* decrement it. + */ + if (client->clientState != ClientStateInitial && + client->clientState != ClientStateAuthenticating ) + { + --nClients; + } + } + + if (really_close_down) + { + if (client->clientState == ClientStateRunning && nClients == 0) + dispatchException |= dispatchExceptionAtReset; + + client->clientState = ClientStateGone; + if (ClientStateCallback) + { + NewClientInfoRec clientinfo; + + clientinfo.client = client; + clientinfo.prefix = (xConnSetupPrefix *)NULL; + clientinfo.setup = (xConnSetup *) NULL; + CallCallbacks((&ClientStateCallback), (pointer)&clientinfo); + } + FreeClientResources(client); +#ifdef XSERVER_DTRACE + XSERVER_CLIENT_DISCONNECT(client->index); +#endif + if (client->index < nextFreeClientID) + nextFreeClientID = client->index; + clients[client->index] = NullClient; + SmartLastClient = NullClient; + dixFreeObjectWithPrivates(client, PRIVATE_CLIENT); + + while (!clients[currentMaxClients-1]) + currentMaxClients--; + } +} + +static void +KillAllClients(void) +{ + int i; + for (i=1; i<currentMaxClients; i++) + if (clients[i]) { + /* Make sure Retained clients are released. */ + clients[i]->closeDownMode = DestroyAll; + CloseDownClient(clients[i]); + } +} + +void InitClient(ClientPtr client, int i, pointer ospriv) +{ + client->index = i; + client->clientAsMask = ((Mask)i) << CLIENTOFFSET; + client->closeDownMode = i ? DestroyAll : RetainPermanent; + client->requestVector = InitialVector; + client->osPrivate = ospriv; + QueryMinMaxKeyCodes(&client->minKC,&client->maxKC); + client->smart_start_tick = SmartScheduleTime; + client->smart_stop_tick = SmartScheduleTime; + client->smart_check_tick = SmartScheduleTime; +} + +/************************ + * int NextAvailableClient(ospriv) + * + * OS dependent portion can't assign client id's because of CloseDownModes. + * Returns NULL if there are no free clients. + *************************/ + +ClientPtr NextAvailableClient(pointer ospriv) +{ + int i; + ClientPtr client; + xReq data; + + i = nextFreeClientID; + if (i == MAXCLIENTS) + return (ClientPtr)NULL; + clients[i] = client = dixAllocateObjectWithPrivates(ClientRec, PRIVATE_CLIENT); + if (!client) + return (ClientPtr)NULL; + InitClient(client, i, ospriv); + if (!InitClientResources(client)) + { + dixFreeObjectWithPrivates(client, PRIVATE_CLIENT); + return (ClientPtr)NULL; + } + data.reqType = 1; + data.length = bytes_to_int32(sz_xReq + sz_xConnClientPrefix); + if (!InsertFakeRequest(client, (char *)&data, sz_xReq)) + { + FreeClientResources(client); + dixFreeObjectWithPrivates(client, PRIVATE_CLIENT); + return (ClientPtr)NULL; + } + if (i == currentMaxClients) + currentMaxClients++; + while ((nextFreeClientID < MAXCLIENTS) && clients[nextFreeClientID]) + nextFreeClientID++; + if (ClientStateCallback) + { + NewClientInfoRec clientinfo; + + clientinfo.client = client; + clientinfo.prefix = (xConnSetupPrefix *)NULL; + clientinfo.setup = (xConnSetup *) NULL; + CallCallbacks((&ClientStateCallback), (pointer)&clientinfo); + } + return client; +} + +int +ProcInitialConnection(ClientPtr client) +{ + REQUEST(xReq); + xConnClientPrefix *prefix; + int whichbyte = 1; + + prefix = (xConnClientPrefix *)((char *)stuff + sz_xReq); + if ((prefix->byteOrder != 'l') && (prefix->byteOrder != 'B')) + return client->noClientException = -1; + if (((*(char *) &whichbyte) && (prefix->byteOrder == 'B')) || + (!(*(char *) &whichbyte) && (prefix->byteOrder == 'l'))) + { + client->swapped = TRUE; + SwapConnClientPrefix(prefix); + } + stuff->reqType = 2; + stuff->length += bytes_to_int32(prefix->nbytesAuthProto) + + bytes_to_int32(prefix->nbytesAuthString); + if (client->swapped) + { + swaps(&stuff->length, whichbyte); + } + ResetCurrentRequest(client); + return Success; +} + +static int +SendConnSetup(ClientPtr client, char *reason) +{ + xWindowRoot *root; + int i; + int numScreens; + char* lConnectionInfo; + xConnSetupPrefix* lconnSetupPrefix; + + if (reason) + { + xConnSetupPrefix csp; + + csp.success = xFalse; + csp.lengthReason = strlen(reason); + csp.length = bytes_to_int32(csp.lengthReason); + csp.majorVersion = X_PROTOCOL; + csp.minorVersion = X_PROTOCOL_REVISION; + if (client->swapped) + WriteSConnSetupPrefix(client, &csp); + else + (void)WriteToClient(client, sz_xConnSetupPrefix, (char *) &csp); + (void)WriteToClient(client, (int)csp.lengthReason, reason); + return client->noClientException = -1; + } + + numScreens = screenInfo.numScreens; + lConnectionInfo = ConnectionInfo; + lconnSetupPrefix = &connSetupPrefix; + + /* We're about to start speaking X protocol back to the client by + * sending the connection setup info. This means the authorization + * step is complete, and we can count the client as an + * authorized one. + */ + nClients++; + + client->requestVector = client->swapped ? SwappedProcVector : ProcVector; + client->sequence = 0; + ((xConnSetup *)lConnectionInfo)->ridBase = client->clientAsMask; + ((xConnSetup *)lConnectionInfo)->ridMask = RESOURCE_ID_MASK; +#ifdef MATCH_CLIENT_ENDIAN + ((xConnSetup *)lConnectionInfo)->imageByteOrder = ClientOrder (client); + ((xConnSetup *)lConnectionInfo)->bitmapBitOrder = ClientOrder (client); +#endif + /* fill in the "currentInputMask" */ + root = (xWindowRoot *)(lConnectionInfo + connBlockScreenStart); +#ifdef PANORAMIX + if (noPanoramiXExtension) + numScreens = screenInfo.numScreens; + else + numScreens = ((xConnSetup *)ConnectionInfo)->numRoots; +#endif + + for (i=0; i<numScreens; i++) + { + unsigned int j; + xDepth *pDepth; + WindowPtr pRoot = screenInfo.screens[i]->root; + + root->currentInputMask = pRoot->eventMask | wOtherEventMasks(pRoot); + pDepth = (xDepth *)(root + 1); + for (j = 0; j < root->nDepths; j++) + { + pDepth = (xDepth *)(((char *)(pDepth + 1)) + + pDepth->nVisuals * sizeof(xVisualType)); + } + root = (xWindowRoot *)pDepth; + } + + if (client->swapped) + { + WriteSConnSetupPrefix(client, lconnSetupPrefix); + WriteSConnectionInfo(client, + (unsigned long)(lconnSetupPrefix->length << 2), + lConnectionInfo); + } + else + { + (void)WriteToClient(client, sizeof(xConnSetupPrefix), + (char *) lconnSetupPrefix); + (void)WriteToClient(client, (int)(lconnSetupPrefix->length << 2), + lConnectionInfo); + } + client->clientState = ClientStateRunning; + if (ClientStateCallback) + { + NewClientInfoRec clientinfo; + + clientinfo.client = client; + clientinfo.prefix = lconnSetupPrefix; + clientinfo.setup = (xConnSetup *)lConnectionInfo; + CallCallbacks((&ClientStateCallback), (pointer)&clientinfo); + } + return Success; +} + +int +ProcEstablishConnection(ClientPtr client) +{ + char *reason, *auth_proto, *auth_string; + xConnClientPrefix *prefix; + REQUEST(xReq); + + prefix = (xConnClientPrefix *)((char *)stuff + sz_xReq); + auth_proto = (char *)prefix + sz_xConnClientPrefix; + auth_string = auth_proto + pad_to_int32(prefix->nbytesAuthProto); + if ((prefix->majorVersion != X_PROTOCOL) || + (prefix->minorVersion != X_PROTOCOL_REVISION)) + reason = "Protocol version mismatch"; + else + reason = ClientAuthorized(client, + (unsigned short)prefix->nbytesAuthProto, + auth_proto, + (unsigned short)prefix->nbytesAuthString, + auth_string); + /* + * If Kerberos is being used for this client, the clientState + * will be set to ClientStateAuthenticating at this point. + * More messages need to be exchanged among the X server, Kerberos + * server, and client to figure out if everyone is authorized. + * So we don't want to send the connection setup info yet, since + * the auth step isn't really done. + */ + if (client->clientState == ClientStateCheckingSecurity) + client->clientState = ClientStateCheckedSecurity; + else if (client->clientState != ClientStateAuthenticating) + return(SendConnSetup(client, reason)); + return Success; +} + +void +SendErrorToClient(ClientPtr client, unsigned majorCode, unsigned minorCode, + XID resId, int errorCode) +{ + xError rep; + + memset(&rep, 0, sizeof(xError)); + rep.type = X_Error; + rep.errorCode = errorCode; + rep.majorCode = majorCode; + rep.minorCode = minorCode; + rep.resourceID = resId; + + WriteEventsToClient (client, 1, (xEvent *)&rep); +} + +void +MarkClientException(ClientPtr client) +{ + client->noClientException = -1; +} + +/* + * This array encodes the answer to the question "what is the log base 2 + * of the number of pixels that fit in a scanline pad unit?" + * Note that ~0 is an invalid entry (mostly for the benefit of the reader). + */ +static int answer[6][4] = { + /* pad pad pad pad*/ + /* 8 16 32 64 */ + + { 3, 4, 5 , 6 }, /* 1 bit per pixel */ + { 1, 2, 3 , 4 }, /* 4 bits per pixel */ + { 0, 1, 2 , 3 }, /* 8 bits per pixel */ + { ~0, 0, 1 , 2 }, /* 16 bits per pixel */ + { ~0, ~0, 0 , 1 }, /* 24 bits per pixel */ + { ~0, ~0, 0 , 1 } /* 32 bits per pixel */ +}; + +/* + * This array gives the answer to the question "what is the first index for + * the answer array above given the number of bits per pixel?" + * Note that ~0 is an invalid entry (mostly for the benefit of the reader). + */ +static int indexForBitsPerPixel[ 33 ] = { + ~0, 0, ~0, ~0, /* 1 bit per pixel */ + 1, ~0, ~0, ~0, /* 4 bits per pixel */ + 2, ~0, ~0, ~0, /* 8 bits per pixel */ + ~0,~0, ~0, ~0, + 3, ~0, ~0, ~0, /* 16 bits per pixel */ + ~0,~0, ~0, ~0, + 4, ~0, ~0, ~0, /* 24 bits per pixel */ + ~0,~0, ~0, ~0, + 5 /* 32 bits per pixel */ +}; + +/* + * This array gives the bytesperPixel value for cases where the number + * of bits per pixel is a multiple of 8 but not a power of 2. + */ +static int answerBytesPerPixel[ 33 ] = { + ~0, 0, ~0, ~0, /* 1 bit per pixel */ + 0, ~0, ~0, ~0, /* 4 bits per pixel */ + 0, ~0, ~0, ~0, /* 8 bits per pixel */ + ~0,~0, ~0, ~0, + 0, ~0, ~0, ~0, /* 16 bits per pixel */ + ~0,~0, ~0, ~0, + 3, ~0, ~0, ~0, /* 24 bits per pixel */ + ~0,~0, ~0, ~0, + 0 /* 32 bits per pixel */ +}; + +/* + * This array gives the answer to the question "what is the second index for + * the answer array above given the number of bits per scanline pad unit?" + * Note that ~0 is an invalid entry (mostly for the benefit of the reader). + */ +static int indexForScanlinePad[ 65 ] = { + ~0, ~0, ~0, ~0, + ~0, ~0, ~0, ~0, + 0, ~0, ~0, ~0, /* 8 bits per scanline pad unit */ + ~0, ~0, ~0, ~0, + 1, ~0, ~0, ~0, /* 16 bits per scanline pad unit */ + ~0, ~0, ~0, ~0, + ~0, ~0, ~0, ~0, + ~0, ~0, ~0, ~0, + 2, ~0, ~0, ~0, /* 32 bits per scanline pad unit */ + ~0, ~0, ~0, ~0, + ~0, ~0, ~0, ~0, + ~0, ~0, ~0, ~0, + ~0, ~0, ~0, ~0, + ~0, ~0, ~0, ~0, + ~0, ~0, ~0, ~0, + ~0, ~0, ~0, ~0, + 3 /* 64 bits per scanline pad unit */ +}; + +/* + grow the array of screenRecs if necessary. + call the device-supplied initialization procedure +with its screen number, a pointer to its ScreenRec, argc, and argv. + return the number of successfully installed screens. + +*/ + +int +AddScreen( + Bool (* pfnInit)( + int /*index*/, + ScreenPtr /*pScreen*/, + int /*argc*/, + char ** /*argv*/ + ), + int argc, + char **argv) +{ + + int i; + int scanlinepad, format, depth, bitsPerPixel, j, k; + ScreenPtr pScreen; + + i = screenInfo.numScreens; + if (i == MAXSCREENS) + return -1; + + pScreen = (ScreenPtr) calloc(1, sizeof(ScreenRec)); + if (!pScreen) + return -1; + + if (!dixAllocatePrivates(&pScreen->devPrivates, PRIVATE_SCREEN)) { + free (pScreen); + return -1; + } + pScreen->myNum = i; + pScreen->totalPixmapSize = 0; /* computed in CreateScratchPixmapForScreen */ + pScreen->ClipNotify = 0; /* for R4 ddx compatibility */ + pScreen->CreateScreenResources = 0; + + /* + * This loop gets run once for every Screen that gets added, + * but thats ok. If the ddx layer initializes the formats + * one at a time calling AddScreen() after each, then each + * iteration will make it a little more accurate. Worst case + * we do this loop N * numPixmapFormats where N is # of screens. + * Anyway, this must be called after InitOutput and before the + * screen init routine is called. + */ + for (format=0; format<screenInfo.numPixmapFormats; format++) + { + depth = screenInfo.formats[format].depth; + bitsPerPixel = screenInfo.formats[format].bitsPerPixel; + scanlinepad = screenInfo.formats[format].scanlinePad; + j = indexForBitsPerPixel[ bitsPerPixel ]; + k = indexForScanlinePad[ scanlinepad ]; + PixmapWidthPaddingInfo[ depth ].padPixelsLog2 = answer[j][k]; + PixmapWidthPaddingInfo[ depth ].padRoundUp = + (scanlinepad/bitsPerPixel) - 1; + j = indexForBitsPerPixel[ 8 ]; /* bits per byte */ + PixmapWidthPaddingInfo[ depth ].padBytesLog2 = answer[j][k]; + PixmapWidthPaddingInfo[ depth ].bitsPerPixel = bitsPerPixel; + if (answerBytesPerPixel[bitsPerPixel]) + { + PixmapWidthPaddingInfo[ depth ].notPower2 = 1; + PixmapWidthPaddingInfo[ depth ].bytesPerPixel = + answerBytesPerPixel[bitsPerPixel]; + } + else + { + PixmapWidthPaddingInfo[ depth ].notPower2 = 0; + } + } + + /* This is where screen specific stuff gets initialized. Load the + screen structure, call the hardware, whatever. + This is also where the default colormap should be allocated and + also pixel values for blackPixel, whitePixel, and the cursor + Note that InitScreen is NOT allowed to modify argc, argv, or + any of the strings pointed to by argv. They may be passed to + multiple screens. + */ + screenInfo.screens[i] = pScreen; + screenInfo.numScreens++; + if (!(*pfnInit)(i, pScreen, argc, argv)) + { + dixFreePrivates(pScreen->devPrivates, PRIVATE_SCREEN); + free(pScreen); + screenInfo.numScreens--; + return -1; + } + + dixRegisterPrivateKey(&cursorScreenDevPriv[i], PRIVATE_CURSOR, 0); + + return i; +} |