diff options
Diffstat (limited to 'xorg-server/record')
| -rw-r--r-- | xorg-server/record/record.c | 5834 | ||||
| -rw-r--r-- | xorg-server/record/set.c | 862 |
2 files changed, 3348 insertions, 3348 deletions
diff --git a/xorg-server/record/record.c b/xorg-server/record/record.c index 1a10c9edc..f79a5a889 100644 --- a/xorg-server/record/record.c +++ b/xorg-server/record/record.c @@ -1,2917 +1,2917 @@ - -/* - -Copyright 1995, 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. - -Author: David P. Wiggins, The Open Group - -This work benefited from earlier work done by Martha Zimet of NCD -and Jim Haggerty of Metheus. - -*/ - -#ifdef HAVE_DIX_CONFIG_H -#include <dix-config.h> -#endif - -#include "dixstruct.h" -#include "extnsionst.h" -#include <X11/extensions/recordproto.h> -#include "set.h" -#include "swaprep.h" -#include "inputstr.h" -#include "eventconvert.h" - - -#include <stdio.h> -#include <assert.h> - -#ifdef PANORAMIX -#include "globals.h" -#include "panoramiX.h" -#include "panoramiXsrv.h" -#include "cursor.h" -#endif - -#include "protocol-versions.h" - -static RESTYPE RTContext; /* internal resource type for Record contexts */ -static int RecordErrorBase; /* first Record error number */ - -/* How many bytes of protocol data to buffer in a context. Don't set to less - * than 32. - */ -#define REPLY_BUF_SIZE 1024 - -/* Record Context structure */ - -typedef struct { - XID id; /* resource id of context */ - ClientPtr pRecordingClient; /* client that has context enabled */ - struct _RecordClientsAndProtocolRec *pListOfRCAP; /* all registered info */ - ClientPtr pBufClient; /* client whose protocol is in replyBuffer*/ - unsigned int continuedReply:1; /* recording a reply that is split up? */ - char elemHeaders; /* element header flags (time/seq no.) */ - char bufCategory; /* category of protocol in replyBuffer */ - int numBufBytes; /* number of bytes in replyBuffer */ - char replyBuffer[REPLY_BUF_SIZE]; /* buffered recorded protocol */ -} RecordContextRec, *RecordContextPtr; - -/* RecordMinorOpRec - to hold minor opcode selections for extension requests - * and replies - */ - -typedef union { - int count; /* first element of array: how many "major" structs to follow */ - struct { /* rest of array elements are this */ - short first; /* first major opcode */ - short last; /* last major opcode */ - RecordSetPtr pMinOpSet; /* minor opcode set for above major range */ - } major; -} RecordMinorOpRec, *RecordMinorOpPtr; - - -/* RecordClientsAndProtocolRec, nicknamed RCAP - holds all the client and - * protocol selections passed in a single CreateContext or RegisterClients. - * Generally, a context will have one of these from the create and an - * additional one for each RegisterClients. RCAPs are freed when all their - * clients are unregistered. - */ - -typedef struct _RecordClientsAndProtocolRec { - RecordContextPtr pContext; /* context that owns this RCAP */ - struct _RecordClientsAndProtocolRec *pNextRCAP; /* next RCAP on context */ - RecordSetPtr pRequestMajorOpSet; /* requests to record */ - RecordMinorOpPtr pRequestMinOpInfo; /* extension requests to record */ - RecordSetPtr pReplyMajorOpSet; /* replies to record */ - RecordMinorOpPtr pReplyMinOpInfo; /* extension replies to record */ - RecordSetPtr pDeviceEventSet; /* device events to record */ - RecordSetPtr pDeliveredEventSet; /* delivered events to record */ - RecordSetPtr pErrorSet; /* errors to record */ - XID * pClientIDs; /* array of clients to record */ - short numClients; /* number of clients in pClientIDs */ - short sizeClients; /* size of pClientIDs array */ - unsigned int clientStarted:1; /* record new client connections? */ - unsigned int clientDied:1; /* record client disconnections? */ - unsigned int clientIDsSeparatelyAllocated:1; /* pClientIDs malloced? */ -} RecordClientsAndProtocolRec, *RecordClientsAndProtocolPtr; - -/* how much bigger to make pRCAP->pClientIDs when reallocing */ -#define CLIENT_ARRAY_GROWTH_INCREMENT 4 - -/* counts the total number of RCAPs belonging to enabled contexts. */ -static int numEnabledRCAPs; - -/* void VERIFY_CONTEXT(RecordContextPtr, XID, ClientPtr) - * In the spirit of the VERIFY_* macros in dix.h, this macro fills in - * the context pointer if the given ID is a valid Record Context, else it - * returns an error. - */ -#define VERIFY_CONTEXT(_pContext, _contextid, _client) { \ - int rc = dixLookupResourceByType((pointer *)&(_pContext), _contextid, \ - RTContext, _client, DixUseAccess); \ - if (rc != Success) \ - return (rc == BadValue) ? RecordErrorBase + XRecordBadContext : rc; \ -} - -static int RecordDeleteContext( - pointer /*value*/, - XID /*id*/ -); - -void RecordExtensionInit(void); - -/***************************************************************************/ - -/* client private stuff */ - -/* To make declarations less obfuscated, have a typedef for a pointer to a - * Proc function. - */ -typedef int (*ProcFunctionPtr)( - ClientPtr /*pClient*/ -); - -/* Record client private. Generally a client only has one of these if - * any of its requests are being recorded. - */ -typedef struct { -/* ptr to client's proc vector before Record stuck its nose in */ - ProcFunctionPtr *originalVector; - -/* proc vector with pointers for recorded requests redirected to the - * function RecordARequest - */ - ProcFunctionPtr recordVector[256]; -} RecordClientPrivateRec, *RecordClientPrivatePtr; - -static int RecordClientPrivateKeyIndex; -static DevPrivateKey RecordClientPrivateKey = &RecordClientPrivateKeyIndex; - -/* RecordClientPrivatePtr RecordClientPrivate(ClientPtr) - * gets the client private of the given client. Syntactic sugar. - */ -#define RecordClientPrivate(_pClient) (RecordClientPrivatePtr) \ - dixLookupPrivate(&(_pClient)->devPrivates, RecordClientPrivateKey) - - -/***************************************************************************/ - -/* global list of all contexts */ - -static RecordContextPtr *ppAllContexts; - -static int numContexts;/* number of contexts in ppAllContexts */ - -/* number of currently enabled contexts. All enabled contexts are bunched - * up at the front of the ppAllContexts array, from ppAllContexts[0] to - * ppAllContexts[numEnabledContexts-1], to eliminate time spent skipping - * past disabled contexts. - */ -static int numEnabledContexts; - -/* RecordFindContextOnAllContexts - * - * Arguments: - * pContext is the context to search for. - * - * Returns: - * The index into the array ppAllContexts at which pContext is stored. - * If pContext is not found in ppAllContexts, returns -1. - * - * Side Effects: none. - */ -static int -RecordFindContextOnAllContexts(RecordContextPtr pContext) -{ - int i; - - assert(numContexts >= numEnabledContexts); - for (i = 0; i < numContexts; i++) - { - if (ppAllContexts[i] == pContext) - return i; - } - return -1; -} /* RecordFindContextOnAllContexts */ - - -/***************************************************************************/ - -/* RecordFlushReplyBuffer - * - * Arguments: - * pContext is the context to flush. - * data1 is a pointer to additional data, and len1 is its length in bytes. - * data2 is a pointer to additional data, and len2 is its length in bytes. - * - * Returns: nothing. - * - * Side Effects: - * If the context is enabled, any buffered (recorded) protocol is written - * to the recording client, and the number of buffered bytes is set to - * zero. If len1 is not zero, data1/len1 are then written to the - * recording client, and similarly for data2/len2 (written after - * data1/len1). - */ -static void -RecordFlushReplyBuffer( - RecordContextPtr pContext, - pointer data1, - int len1, - pointer data2, - int len2 -) -{ - if (!pContext->pRecordingClient || pContext->pRecordingClient->clientGone) - return; - if (pContext->numBufBytes) - WriteToClient(pContext->pRecordingClient, pContext->numBufBytes, - (char *)pContext->replyBuffer); - pContext->numBufBytes = 0; - if (len1) - WriteToClient(pContext->pRecordingClient, len1, (char *)data1); - if (len2) - WriteToClient(pContext->pRecordingClient, len2, (char *)data2); -} /* RecordFlushReplyBuffer */ - - -/* RecordAProtocolElement - * - * Arguments: - * pContext is the context that is recording a protocol element. - * pClient is the client whose protocol is being recorded. For - * device events and EndOfData, pClient is NULL. - * category is the category of the protocol element, as defined - * by the RECORD spec. - * data is a pointer to the protocol data, and datalen is its length - * in bytes. - * futurelen is the number of bytes that will be sent in subsequent - * calls to this function to complete this protocol element. - * In those subsequent calls, futurelen will be -1 to indicate - * that the current data is a continuation of the same protocol - * element. - * - * Returns: nothing. - * - * Side Effects: - * The context may be flushed. The new protocol element will be - * added to the context's protocol buffer with appropriate element - * headers prepended (sequence number and timestamp). If the data - * is continuation data (futurelen == -1), element headers won't - * be added. If the protocol element and headers won't fit in - * the context's buffer, it is sent directly to the recording - * client (after any buffered data). - */ -static void -RecordAProtocolElement(RecordContextPtr pContext, ClientPtr pClient, - int category, pointer data, int datalen, int futurelen) -{ - CARD32 elemHeaderData[2]; - int numElemHeaders = 0; - Bool recordingClientSwapped = pContext->pRecordingClient->swapped; - int n; - CARD32 serverTime = 0; - Bool gotServerTime = FALSE; - int replylen; - - if (futurelen >= 0) - { /* start of new protocol element */ - xRecordEnableContextReply *pRep = (xRecordEnableContextReply *) - pContext->replyBuffer; - if (pContext->pBufClient != pClient || - pContext->bufCategory != category) - { - RecordFlushReplyBuffer(pContext, NULL, 0, NULL, 0); - pContext->pBufClient = pClient; - pContext->bufCategory = category; - } - - if (!pContext->numBufBytes) - { - serverTime = GetTimeInMillis(); - gotServerTime = TRUE; - pRep->type = X_Reply; - pRep->category = category; - pRep->sequenceNumber = pContext->pRecordingClient->sequence; - pRep->length = 0; - pRep->elementHeader = pContext->elemHeaders; - pRep->serverTime = serverTime; - if (pClient) - { - pRep->clientSwapped = - (pClient->swapped != recordingClientSwapped); - pRep->idBase = pClient->clientAsMask; - pRep->recordedSequenceNumber = pClient->sequence; - } - else /* it's a device event, StartOfData, or EndOfData */ - { - pRep->clientSwapped = (category != XRecordFromServer) && - recordingClientSwapped; - pRep->idBase = 0; - pRep->recordedSequenceNumber = 0; - } - - if (recordingClientSwapped) - { - swaps(&pRep->sequenceNumber, n); - swapl(&pRep->length, n); - swapl(&pRep->idBase, n); - swapl(&pRep->serverTime, n); - swapl(&pRep->recordedSequenceNumber, n); - } - pContext->numBufBytes = SIZEOF(xRecordEnableContextReply); - } - - /* generate element headers if needed */ - - if ( ( (pContext->elemHeaders & XRecordFromClientTime) - && category == XRecordFromClient) - || - ( (pContext->elemHeaders & XRecordFromServerTime) - && category == XRecordFromServer)) - { - if (gotServerTime) - elemHeaderData[numElemHeaders] = serverTime; - else - elemHeaderData[numElemHeaders] = GetTimeInMillis(); - if (recordingClientSwapped) - swapl(&elemHeaderData[numElemHeaders], n); - numElemHeaders++; - } - - if ( (pContext->elemHeaders & XRecordFromClientSequence) - && - (category == XRecordFromClient || category == XRecordClientDied)) - { - elemHeaderData[numElemHeaders] = pClient->sequence; - if (recordingClientSwapped) - swapl(&elemHeaderData[numElemHeaders], n); - numElemHeaders++; - } - - /* adjust reply length */ - - replylen = pRep->length; - if (recordingClientSwapped) swapl(&replylen, n); - replylen += numElemHeaders + bytes_to_int32(datalen) + - bytes_to_int32(futurelen); - if (recordingClientSwapped) swapl(&replylen, n); - pRep->length = replylen; - } /* end if not continued reply */ - - numElemHeaders *= 4; - - /* if space available >= space needed, buffer the data */ - - if (REPLY_BUF_SIZE - pContext->numBufBytes >= datalen + numElemHeaders) - { - if (numElemHeaders) - { - memcpy(pContext->replyBuffer + pContext->numBufBytes, - elemHeaderData, numElemHeaders); - pContext->numBufBytes += numElemHeaders; - } - if (datalen) - { - memcpy(pContext->replyBuffer + pContext->numBufBytes, - data, datalen); - pContext->numBufBytes += datalen; - } - } - else - RecordFlushReplyBuffer(pContext, (pointer)elemHeaderData, - numElemHeaders, (pointer)data, datalen); - -} /* RecordAProtocolElement */ - - -/* RecordFindClientOnContext - * - * Arguments: - * pContext is the context to search. - * clientspec is the resource ID mask identifying the client to search - * for, or XRecordFutureClients. - * pposition is a pointer to an int, or NULL. See Returns. - * - * Returns: - * The RCAP on which clientspec was found, or NULL if not found on - * any RCAP on the given context. - * If pposition was not NULL and the returned RCAP is not NULL, - * *pposition will be set to the index into the returned the RCAP's - * pClientIDs array that holds clientspec. - * - * Side Effects: none. - */ -static RecordClientsAndProtocolPtr -RecordFindClientOnContext( - RecordContextPtr pContext, - XID clientspec, - int *pposition -) -{ - RecordClientsAndProtocolPtr pRCAP; - - for (pRCAP = pContext->pListOfRCAP; pRCAP; pRCAP = pRCAP->pNextRCAP) - { - int i; - for (i = 0; i < pRCAP->numClients; i++) - { - if (pRCAP->pClientIDs[i] == clientspec) - { - if (pposition) - *pposition = i; - return pRCAP; - } - } - } - return NULL; -} /* RecordFindClientOnContext */ - - -/* RecordABigRequest - * - * Arguments: - * pContext is the recording context. - * client is the client being recorded. - * stuff is a pointer to the big request of client (see the Big Requests - * extension for details.) - * - * Returns: nothing. - * - * Side Effects: - * The big request is recorded with the correct length field re-inserted. - * - * Note: this function exists mainly to make RecordARequest smaller. - */ -static void -RecordABigRequest(RecordContextPtr pContext, ClientPtr client, xReq *stuff) -{ - CARD32 bigLength; - char n; - int bytesLeft; - - /* note: client->req_len has been frobbed by ReadRequestFromClient - * (os/io.c) to discount the extra 4 bytes taken by the extended length - * field in a big request. The actual request length to record is - * client->req_len + 1 (measured in CARD32s). - */ - - /* record the request header */ - bytesLeft = client->req_len << 2; - RecordAProtocolElement(pContext, client, XRecordFromClient, - (pointer)stuff, SIZEOF(xReq), bytesLeft); - - /* reinsert the extended length field that was squished out */ - bigLength = client->req_len + bytes_to_int32(sizeof(bigLength)); - if (client->swapped) - swapl(&bigLength, n); - RecordAProtocolElement(pContext, client, XRecordFromClient, - (pointer)&bigLength, sizeof(bigLength), /* continuation */ -1); - bytesLeft -= sizeof(bigLength); - - /* record the rest of the request after the length */ - RecordAProtocolElement(pContext, client, XRecordFromClient, - (pointer)(stuff + 1), bytesLeft, /* continuation */ -1); -} /* RecordABigRequest */ - - -/* RecordARequest - * - * Arguments: - * client is a client that the server has dispatched a request to by - * calling client->requestVector[request opcode] . - * The request is in client->requestBuffer. - * - * Returns: - * Whatever is returned by the "real" Proc function for this request. - * The "real" Proc function is the function that was in - * client->requestVector[request opcode] before it was replaced by - * RecordARequest. (See the function RecordInstallHooks.) - * - * Side Effects: - * The request is recorded by all contexts that have registered this - * request for this client. The real Proc function is called. - */ -static int -RecordARequest(ClientPtr client) -{ - RecordContextPtr pContext; - RecordClientsAndProtocolPtr pRCAP; - int i; - RecordClientPrivatePtr pClientPriv; - REQUEST(xReq); - int majorop; - - majorop = stuff->reqType; - for (i = 0; i < numEnabledContexts; i++) - { - pContext = ppAllContexts[i]; - pRCAP = RecordFindClientOnContext(pContext, client->clientAsMask, - NULL); - if (pRCAP && pRCAP->pRequestMajorOpSet && - RecordIsMemberOfSet(pRCAP->pRequestMajorOpSet, majorop)) - { - if (majorop <= 127) - { /* core request */ - - if (stuff->length == 0) - RecordABigRequest(pContext, client, stuff); - else - RecordAProtocolElement(pContext, client, XRecordFromClient, - (pointer)stuff, client->req_len << 2, 0); - } - else /* extension, check minor opcode */ - { - int minorop = MinorOpcodeOfRequest(client); - int numMinOpInfo; - RecordMinorOpPtr pMinorOpInfo = pRCAP->pRequestMinOpInfo; - - assert (pMinorOpInfo); - numMinOpInfo = pMinorOpInfo->count; - pMinorOpInfo++; - assert (numMinOpInfo); - for ( ; numMinOpInfo; numMinOpInfo--, pMinorOpInfo++) - { - if (majorop >= pMinorOpInfo->major.first && - majorop <= pMinorOpInfo->major.last && - RecordIsMemberOfSet(pMinorOpInfo->major.pMinOpSet, - minorop)) - { - if (stuff->length == 0) - RecordABigRequest(pContext, client, stuff); - else - RecordAProtocolElement(pContext, client, - XRecordFromClient, (pointer)stuff, - client->req_len << 2, 0); - break; - } - } /* end for each minor op info */ - } /* end extension request */ - } /* end this RCAP wants this major opcode */ - } /* end for each context */ - pClientPriv = RecordClientPrivate(client); - assert(pClientPriv); - return (* pClientPriv->originalVector[majorop])(client); -} /* RecordARequest */ - -/* RecordAReply - * - * Arguments: - * pcbl is &ReplyCallback. - * nulldata is NULL. - * calldata is a pointer to a ReplyInfoRec (include/os.h) - * which provides information about replies that are being sent - * to clients. - * - * Returns: nothing. - * - * Side Effects: - * The reply is recorded by all contexts that have registered this - * reply type for this client. If more data belonging to the same - * reply is expected, and if the reply is being recorded by any - * context, pContext->continuedReply is set to 1. - * If pContext->continuedReply was already 1 and this is the last - * chunk of data belonging to this reply, it is set to 0. - */ -static void -RecordAReply(CallbackListPtr *pcbl, pointer nulldata, pointer calldata) -{ - RecordContextPtr pContext; - RecordClientsAndProtocolPtr pRCAP; - int eci; - int majorop; - ReplyInfoRec *pri = (ReplyInfoRec *)calldata; - ClientPtr client = pri->client; - REQUEST(xReq); - - majorop = stuff->reqType; - for (eci = 0; eci < numEnabledContexts; eci++) - { - pContext = ppAllContexts[eci]; - pRCAP = RecordFindClientOnContext(pContext, client->clientAsMask, - NULL); - if (pRCAP) - { - if (pContext->continuedReply) - { - RecordAProtocolElement(pContext, client, XRecordFromServer, - (pointer)pri->replyData, pri->dataLenBytes, /* continuation */ -1); - if (!pri->bytesRemaining) - pContext->continuedReply = 0; - } - else if (pri->startOfReply && pRCAP->pReplyMajorOpSet && - RecordIsMemberOfSet(pRCAP->pReplyMajorOpSet, majorop)) - { - if (majorop <= 127) - { /* core reply */ - RecordAProtocolElement(pContext, client, XRecordFromServer, - (pointer)pri->replyData, pri->dataLenBytes, pri->bytesRemaining); - if (pri->bytesRemaining) - pContext->continuedReply = 1; - } - else /* extension, check minor opcode */ - { - int minorop = MinorOpcodeOfRequest(client); - int numMinOpInfo; - RecordMinorOpPtr pMinorOpInfo = pRCAP->pReplyMinOpInfo; - assert (pMinorOpInfo); - numMinOpInfo = pMinorOpInfo->count; - pMinorOpInfo++; - assert (numMinOpInfo); - for ( ; numMinOpInfo; numMinOpInfo--, pMinorOpInfo++) - { - if (majorop >= pMinorOpInfo->major.first && - majorop <= pMinorOpInfo->major.last && - RecordIsMemberOfSet(pMinorOpInfo->major.pMinOpSet, - minorop)) - { - RecordAProtocolElement(pContext, client, - XRecordFromServer, (pointer)pri->replyData, - pri->dataLenBytes, pri->bytesRemaining); - if (pri->bytesRemaining) - pContext->continuedReply = 1; - break; - } - } /* end for each minor op info */ - } /* end extension reply */ - } /* end continued reply vs. start of reply */ - } /* end client is registered on this context */ - } /* end for each context */ -} /* RecordAReply */ - - -/* RecordADeliveredEventOrError - * - * Arguments: - * pcbl is &EventCallback. - * nulldata is NULL. - * calldata is a pointer to a EventInfoRec (include/dix.h) - * which provides information about events that are being sent - * to clients. - * - * Returns: nothing. - * - * Side Effects: - * The event or error is recorded by all contexts that have registered - * it for this client. - */ -static void -RecordADeliveredEventOrError(CallbackListPtr *pcbl, pointer nulldata, pointer calldata) -{ - EventInfoRec *pei = (EventInfoRec *)calldata; - RecordContextPtr pContext; - RecordClientsAndProtocolPtr pRCAP; - int eci; /* enabled context index */ - ClientPtr pClient = pei->client; - - for (eci = 0; eci < numEnabledContexts; eci++) - { - pContext = ppAllContexts[eci]; - pRCAP = RecordFindClientOnContext(pContext, pClient->clientAsMask, - NULL); - if (pRCAP && (pRCAP->pDeliveredEventSet || pRCAP->pErrorSet)) - { - int ev; /* event index */ - xEvent *pev = pei->events; - for (ev = 0; ev < pei->count; ev++, pev++) - { - int recordit = 0; - if (pRCAP->pErrorSet) - { - recordit = RecordIsMemberOfSet(pRCAP->pErrorSet, - ((xError *)(pev))->errorCode); - } - else if (pRCAP->pDeliveredEventSet) - { - recordit = RecordIsMemberOfSet(pRCAP->pDeliveredEventSet, - pev->u.u.type & 0177); - } - if (recordit) - { - xEvent swappedEvent; - xEvent *pEvToRecord = pev; - - if (pClient->swapped) - { - (*EventSwapVector[pev->u.u.type & 0177]) - (pev, &swappedEvent); - pEvToRecord = &swappedEvent; - - } - RecordAProtocolElement(pContext, pClient, - XRecordFromServer, pEvToRecord, SIZEOF(xEvent), 0); - } - } /* end for each event */ - } /* end this client is on this context */ - } /* end for each enabled context */ -} /* RecordADeliveredEventOrError */ - - -static void -RecordSendProtocolEvents(RecordClientsAndProtocolPtr pRCAP, - RecordContextPtr pContext, - xEvent* pev, int count) -{ - int ev; /* event index */ - - for (ev = 0; ev < count; ev++, pev++) - { - if (RecordIsMemberOfSet(pRCAP->pDeviceEventSet, - pev->u.u.type & 0177)) - { - xEvent swappedEvent; - xEvent *pEvToRecord = pev; -#ifdef PANORAMIX - xEvent shiftedEvent; - - if (!noPanoramiXExtension && - (pev->u.u.type == MotionNotify || - pev->u.u.type == ButtonPress || - pev->u.u.type == ButtonRelease || - pev->u.u.type == KeyPress || - pev->u.u.type == KeyRelease)) { - int scr = XineramaGetCursorScreen(inputInfo.pointer); - memcpy(&shiftedEvent, pev, sizeof(xEvent)); - shiftedEvent.u.keyButtonPointer.rootX += - panoramiXdataPtr[scr].x - - panoramiXdataPtr[0].x; - shiftedEvent.u.keyButtonPointer.rootY += - panoramiXdataPtr[scr].y - - panoramiXdataPtr[0].y; - pEvToRecord = &shiftedEvent; - } -#endif /* PANORAMIX */ - - if (pContext->pRecordingClient->swapped) - { - (*EventSwapVector[pEvToRecord->u.u.type & 0177]) - (pEvToRecord, &swappedEvent); - pEvToRecord = &swappedEvent; - } - - RecordAProtocolElement(pContext, NULL, - XRecordFromServer, pEvToRecord, SIZEOF(xEvent), 0); - /* make sure device events get flushed in the absence - * of other client activity - */ - SetCriticalOutputPending(); - } - } /* end for each event */ - -} /* RecordADeviceEvent */ - -/* RecordADeviceEvent - * - * Arguments: - * pcbl is &DeviceEventCallback. - * nulldata is NULL. - * calldata is a pointer to a DeviceEventInfoRec (include/dix.h) - * which provides information about device events that occur. - * - * Returns: nothing. - * - * Side Effects: - * The device event is recorded by all contexts that have registered - * it for this client. - */ -static void -RecordADeviceEvent(CallbackListPtr *pcbl, pointer nulldata, pointer calldata) -{ - DeviceEventInfoRec *pei = (DeviceEventInfoRec *)calldata; - RecordContextPtr pContext; - RecordClientsAndProtocolPtr pRCAP; - int eci; /* enabled context index */ - - for (eci = 0; eci < numEnabledContexts; eci++) - { - pContext = ppAllContexts[eci]; - for (pRCAP = pContext->pListOfRCAP; pRCAP; pRCAP = pRCAP->pNextRCAP) - { - if (pRCAP->pDeviceEventSet) - { - int count; - xEvent *xi_events = NULL; - - /* TODO check return values */ - if (IsMaster(pei->device)) - { - xEvent xE; - EventToCore(pei->event, &xE); - RecordSendProtocolEvents(pRCAP, pContext, &xE, 1); - } - - EventToXI(pei->event, &xi_events, &count); - RecordSendProtocolEvents(pRCAP, pContext, xi_events, count); - xfree(xi_events); - } /* end this RCAP selects device events */ - } /* end for each RCAP on this context */ - } /* end for each enabled context */ -} - - -/* RecordFlushAllContexts - * - * Arguments: - * pcbl is &FlushCallback. - * nulldata and calldata are NULL. - * - * Returns: nothing. - * - * Side Effects: - * All buffered reply data of all enabled contexts is written to - * the recording clients. - */ -static void -RecordFlushAllContexts( - CallbackListPtr *pcbl, - pointer nulldata, - pointer calldata -) -{ - int eci; /* enabled context index */ - RecordContextPtr pContext; - - for (eci = 0; eci < numEnabledContexts; eci++) - { - pContext = ppAllContexts[eci]; - - /* In most cases we leave it to RecordFlushReplyBuffer to make - * this check, but this function could be called very often, so we - * check before calling hoping to save the function call cost - * most of the time. - */ - if (pContext->numBufBytes) - RecordFlushReplyBuffer(ppAllContexts[eci], NULL, 0, NULL, 0); - } -} /* RecordFlushAllContexts */ - - -/* RecordInstallHooks - * - * Arguments: - * pRCAP is an RCAP on an enabled or being-enabled context. - * oneclient can be zero or the resource ID mask identifying a client. - * - * Returns: BadAlloc if a memory allocation error occurred, else Success. - * - * Side Effects: - * Recording hooks needed by RCAP are installed. - * If oneclient is zero, recording hooks needed for all clients and - * protocol on the RCAP are installed. If oneclient is non-zero, - * only those hooks needed for the specified client are installed. - * - * Client requestVectors may be altered. numEnabledRCAPs will be - * incremented if oneclient == 0. Callbacks may be added to - * various callback lists. - */ -static int -RecordInstallHooks(RecordClientsAndProtocolPtr pRCAP, XID oneclient) -{ - int i = 0; - XID client; - - if (oneclient) - client = oneclient; - else - client = pRCAP->numClients ? pRCAP->pClientIDs[i++] : 0; - - while (client) - { - if (client != XRecordFutureClients) - { - if (pRCAP->pRequestMajorOpSet) - { - RecordSetIteratePtr pIter = NULL; - RecordSetInterval interval; - ClientPtr pClient = clients[CLIENT_ID(client)]; - - if (pClient && !RecordClientPrivate(pClient)) - { - RecordClientPrivatePtr pClientPriv; - /* no Record proc vector; allocate one */ - pClientPriv = (RecordClientPrivatePtr) - xalloc(sizeof(RecordClientPrivateRec)); - if (!pClientPriv) - return BadAlloc; - /* copy old proc vector to new */ - memcpy(pClientPriv->recordVector, pClient->requestVector, - sizeof (pClientPriv->recordVector)); - pClientPriv->originalVector = pClient->requestVector; - dixSetPrivate(&pClient->devPrivates, - RecordClientPrivateKey, pClientPriv); - pClient->requestVector = pClientPriv->recordVector; - } - while ((pIter = RecordIterateSet(pRCAP->pRequestMajorOpSet, - pIter, &interval))) - { - unsigned int j; - for (j = interval.first; j <= interval.last; j++) - pClient->requestVector[j] = RecordARequest; - } - } - } - if (oneclient) - client = 0; - else - client = (i < pRCAP->numClients) ? pRCAP->pClientIDs[i++] : 0; - } - - assert(numEnabledRCAPs >= 0); - if (!oneclient && ++numEnabledRCAPs == 1) - { /* we're enabling the first context */ - if (!AddCallback(&EventCallback, RecordADeliveredEventOrError, NULL)) - return BadAlloc; - if (!AddCallback(&DeviceEventCallback, RecordADeviceEvent, NULL)) - return BadAlloc; - if (!AddCallback(&ReplyCallback, RecordAReply, NULL)) - return BadAlloc; - if (!AddCallback(&FlushCallback, RecordFlushAllContexts, NULL)) - return BadAlloc; - /* Alternate context flushing scheme: delete the line above - * and call RegisterBlockAndWakeupHandlers here passing - * RecordFlushAllContexts. Is this any better? - */ - } - return Success; -} /* RecordInstallHooks */ - - -/* RecordUninstallHooks - * - * Arguments: - * pRCAP is an RCAP on an enabled or being-disabled context. - * oneclient can be zero or the resource ID mask identifying a client. - * - * Returns: nothing. - * - * Side Effects: - * Recording hooks needed by RCAP may be uninstalled. - * If oneclient is zero, recording hooks needed for all clients and - * protocol on the RCAP may be uninstalled. If oneclient is non-zero, - * only those hooks needed for the specified client may be uninstalled. - * - * Client requestVectors may be altered. numEnabledRCAPs will be - * decremented if oneclient == 0. Callbacks may be deleted from - * various callback lists. - */ -static void -RecordUninstallHooks(RecordClientsAndProtocolPtr pRCAP, XID oneclient) -{ - int i = 0; - XID client; - - if (oneclient) - client = oneclient; - else - client = pRCAP->numClients ? pRCAP->pClientIDs[i++] : 0; - - while (client) - { - if (client != XRecordFutureClients) - { - if (pRCAP->pRequestMajorOpSet) - { - ClientPtr pClient = clients[CLIENT_ID(client)]; - int c; - Bool otherRCAPwantsProcVector = FALSE; - RecordClientPrivatePtr pClientPriv = - RecordClientPrivate(pClient); - - assert (pClient && RecordClientPrivate(pClient)); - memcpy(pClientPriv->recordVector, pClientPriv->originalVector, - sizeof (pClientPriv->recordVector)); - - for (c = 0; c < numEnabledContexts; c++) - { - RecordClientsAndProtocolPtr pOtherRCAP; - RecordContextPtr pContext = ppAllContexts[c]; - - if (pContext == pRCAP->pContext) continue; - pOtherRCAP = RecordFindClientOnContext(pContext, client, - NULL); - if (pOtherRCAP && pOtherRCAP->pRequestMajorOpSet) - { - RecordSetIteratePtr pIter = NULL; - RecordSetInterval interval; - - otherRCAPwantsProcVector = TRUE; - while ((pIter = RecordIterateSet( - pOtherRCAP->pRequestMajorOpSet, - pIter, &interval))) - { - unsigned int j; - for (j = interval.first; j <= interval.last; j++) - pClient->requestVector[j] = RecordARequest; - } - } - } - if (!otherRCAPwantsProcVector) - { /* nobody needs it, so free it */ - pClient->requestVector = pClientPriv->originalVector; - dixSetPrivate(&pClient->devPrivates, - RecordClientPrivateKey, NULL); - xfree(pClientPriv); - } - } /* end if this RCAP specifies any requests */ - } /* end if not future clients */ - if (oneclient) - client = 0; - else - client = (i < pRCAP->numClients) ? pRCAP->pClientIDs[i++] : 0; - } - - assert(numEnabledRCAPs >= 1); - if (!oneclient && --numEnabledRCAPs == 0) - { /* we're disabling the last context */ - DeleteCallback(&EventCallback, RecordADeliveredEventOrError, NULL); - DeleteCallback(&DeviceEventCallback, RecordADeviceEvent, NULL); - DeleteCallback(&ReplyCallback, RecordAReply, NULL); - DeleteCallback(&FlushCallback, RecordFlushAllContexts, NULL); - /* Alternate context flushing scheme: delete the line above - * and call RemoveBlockAndWakeupHandlers here passing - * RecordFlushAllContexts. Is this any better? - */ - /* Having deleted the callback, call it one last time. -gildea */ - RecordFlushAllContexts(&FlushCallback, NULL, NULL); - } -} /* RecordUninstallHooks */ - - -/* RecordDeleteClientFromRCAP - * - * Arguments: - * pRCAP is an RCAP to delete the client from. - * position is the index into the array pRCAP->pClientIDs of the - * client to delete. - * - * Returns: nothing. - * - * Side Effects: - * Recording hooks needed by client will be uninstalled if the context - * is enabled. The designated client will be removed from the - * pRCAP->pClientIDs array. If it was the only client on the RCAP, - * the RCAP is removed from the context and freed. (Invariant: RCAPs - * have at least one client.) - */ -static void -RecordDeleteClientFromRCAP(RecordClientsAndProtocolPtr pRCAP, int position) -{ - if (pRCAP->pContext->pRecordingClient) - RecordUninstallHooks(pRCAP, pRCAP->pClientIDs[position]); - if (position != pRCAP->numClients - 1) - pRCAP->pClientIDs[position] = pRCAP->pClientIDs[pRCAP->numClients - 1]; - if (--pRCAP->numClients == 0) - { /* no more clients; remove RCAP from context's list */ - RecordContextPtr pContext = pRCAP->pContext; - if (pContext->pRecordingClient) - RecordUninstallHooks(pRCAP, 0); - if (pContext->pListOfRCAP == pRCAP) - pContext->pListOfRCAP = pRCAP->pNextRCAP; - else - { - RecordClientsAndProtocolPtr prevRCAP; - for (prevRCAP = pContext->pListOfRCAP; - prevRCAP->pNextRCAP != pRCAP; - prevRCAP = prevRCAP->pNextRCAP) - ; - prevRCAP->pNextRCAP = pRCAP->pNextRCAP; - } - /* free the RCAP */ - if (pRCAP->clientIDsSeparatelyAllocated) - xfree(pRCAP->pClientIDs); - xfree(pRCAP); - } -} /* RecordDeleteClientFromRCAP */ - - -/* RecordAddClientToRCAP - * - * Arguments: - * pRCAP is an RCAP to add the client to. - * clientspec is the resource ID mask identifying a client, or - * XRecordFutureClients. - * - * Returns: nothing. - * - * Side Effects: - * Recording hooks needed by client will be installed if the context - * is enabled. The designated client will be added to the - * pRCAP->pClientIDs array, which may be realloced. - * pRCAP->clientIDsSeparatelyAllocated may be set to 1 if there - * is no more room to hold clients internal to the RCAP. - */ -static void -RecordAddClientToRCAP(RecordClientsAndProtocolPtr pRCAP, XID clientspec) -{ - if (pRCAP->numClients == pRCAP->sizeClients) - { - if (pRCAP->clientIDsSeparatelyAllocated) - { - XID *pNewIDs = (XID *)xrealloc(pRCAP->pClientIDs, - (pRCAP->sizeClients + CLIENT_ARRAY_GROWTH_INCREMENT) * - sizeof(XID)); - if (!pNewIDs) - return; - pRCAP->pClientIDs = pNewIDs; - pRCAP->sizeClients += CLIENT_ARRAY_GROWTH_INCREMENT; - } - else - { - XID *pNewIDs = (XID *)xalloc((pRCAP->sizeClients + - CLIENT_ARRAY_GROWTH_INCREMENT) * sizeof(XID)); - if (!pNewIDs) - return; - memcpy(pNewIDs, pRCAP->pClientIDs, pRCAP->numClients *sizeof(XID)); - pRCAP->pClientIDs = pNewIDs; - pRCAP->sizeClients += CLIENT_ARRAY_GROWTH_INCREMENT; - pRCAP->clientIDsSeparatelyAllocated = 1; - } - } - pRCAP->pClientIDs[pRCAP->numClients++] = clientspec; - if (pRCAP->pContext->pRecordingClient) - RecordInstallHooks(pRCAP, clientspec); -} /* RecordDeleteClientFromRCAP */ - - -/* RecordDeleteClientFromContext - * - * Arguments: - * pContext is the context to delete from. - * clientspec is the resource ID mask identifying a client, or - * XRecordFutureClients. - * - * Returns: nothing. - * - * Side Effects: - * If clientspec is on any RCAP of the context, it is deleted from that - * RCAP. (A given clientspec can only be on one RCAP of a context.) - */ -static void -RecordDeleteClientFromContext(RecordContextPtr pContext, XID clientspec) -{ - RecordClientsAndProtocolPtr pRCAP; - int position; - - if ((pRCAP = RecordFindClientOnContext(pContext, clientspec, &position))) - RecordDeleteClientFromRCAP(pRCAP, position); -} /* RecordDeleteClientFromContext */ - - -/* RecordSanityCheckClientSpecifiers - * - * Arguments: - * clientspecs is an array of alleged CLIENTSPECs passed by the client. - * nspecs is the number of elements in clientspecs. - * errorspec, if non-zero, is the resource id base of a client that - * must not appear in clienspecs. - * - * Returns: BadMatch if any of the clientspecs are invalid, else Success. - * - * Side Effects: none. - */ -static int -RecordSanityCheckClientSpecifiers(ClientPtr client, XID *clientspecs, int nspecs, XID errorspec) -{ - int i; - int clientIndex; - int rc; - pointer value; - - for (i = 0; i < nspecs; i++) - { - if (clientspecs[i] == XRecordCurrentClients || - clientspecs[i] == XRecordFutureClients || - clientspecs[i] == XRecordAllClients) - continue; - if (errorspec && (CLIENT_BITS(clientspecs[i]) == errorspec) ) - return BadMatch; - clientIndex = CLIENT_ID(clientspecs[i]); - if (clientIndex && clients[clientIndex] && - clients[clientIndex]->clientState == ClientStateRunning) - { - if (clientspecs[i] == clients[clientIndex]->clientAsMask) - continue; - rc = dixLookupResourceByClass(&value, clientspecs[i], RC_ANY, - client, DixGetAttrAccess); - if (rc != Success) - return rc; - } - else - return BadMatch; - } - return Success; -} /* RecordSanityCheckClientSpecifiers */ - - -/* RecordCanonicalizeClientSpecifiers - * - * Arguments: - * pClientspecs is an array of CLIENTSPECs that have been sanity - * checked. - * pNumClientspecs is a pointer to the number of elements in pClientspecs. - * excludespec, if non-zero, is the resource id base of a client that - * should not be included in the expansion of XRecordAllClients or - * XRecordCurrentClients. - * - * Returns: - * A pointer to an array of CLIENTSPECs that is the same as the - * passed array with the following modifications: - * - all but the client id bits of resource IDs are stripped off. - * - duplicates removed. - * - XRecordAllClients expanded to a list of all currently connected - * clients + XRecordFutureClients - excludespec (if non-zero) - * - XRecordCurrentClients expanded to a list of all currently - * connected clients - excludespec (if non-zero) - * The returned array may be the passed array modified in place, or - * it may be an Xalloc'ed array. The caller should keep a pointer to the - * original array and free the returned array if it is different. - * - * *pNumClientspecs is set to the number of elements in the returned - * array. - * - * Side Effects: - * pClientspecs may be modified in place. - */ -static XID * -RecordCanonicalizeClientSpecifiers(XID *pClientspecs, int *pNumClientspecs, XID excludespec) -{ - int i; - int numClients = *pNumClientspecs; - - /* first pass strips off the resource index bits, leaving just the - * client id bits. This makes searching for a particular client simpler - * (and faster.) - */ - for (i = 0; i < numClients; i++) - { - XID cs = pClientspecs[i]; - if (cs > XRecordAllClients) - pClientspecs[i] = CLIENT_BITS(cs); - } - - for (i = 0; i < numClients; i++) - { - if (pClientspecs[i] == XRecordAllClients || - pClientspecs[i] == XRecordCurrentClients) - { /* expand All/Current */ - int j, nc; - XID *pCanon = (XID *)xalloc(sizeof(XID) * (currentMaxClients + 1)); - if (!pCanon) return NULL; - for (nc = 0, j = 1; j < currentMaxClients; j++) - { - ClientPtr client = clients[j]; - if (client != NullClient && - client->clientState == ClientStateRunning && - client->clientAsMask != excludespec) - { - pCanon[nc++] = client->clientAsMask; - } - } - if (pClientspecs[i] == XRecordAllClients) - pCanon[nc++] = XRecordFutureClients; - *pNumClientspecs = nc; - return pCanon; - } - else /* not All or Current */ - { - int j; - for (j = i + 1; j < numClients; ) - { - if (pClientspecs[i] == pClientspecs[j]) - { - pClientspecs[j] = pClientspecs[--numClients]; - } - else - j++; - } - } - } /* end for each clientspec */ - *pNumClientspecs = numClients; - return pClientspecs; -} /* RecordCanonicalizeClientSpecifiers */ - - -/****************************************************************************/ - -/* stuff for RegisterClients */ - -/* RecordPadAlign - * - * Arguments: - * size is the number of bytes taken by an object. - * align is a byte boundary (e.g. 4, 8) - * - * Returns: - * the number of pad bytes to add at the end of an object of the - * given size so that an object placed immediately behind it will - * begin on an <align>-byte boundary. - * - * Side Effects: none. - */ -static int -RecordPadAlign(int size, int align) -{ - return (align - (size & (align - 1))) & (align - 1); -} /* RecordPadAlign */ - - -/* RecordSanityCheckRegisterClients - * - * Arguments: - * pContext is the context being registered on. - * client is the client that issued a RecordCreateContext or - * RecordRegisterClients request. - * stuff is a pointer to the request. - * - * Returns: - * Any one of several possible error values if any of the request - * arguments are invalid. Success if everything is OK. - * - * Side Effects: none. - */ -static int -RecordSanityCheckRegisterClients(RecordContextPtr pContext, ClientPtr client, xRecordRegisterClientsReq *stuff) -{ - int err; - xRecordRange *pRange; - int i; - XID recordingClient; - - if (((client->req_len << 2) - SIZEOF(xRecordRegisterClientsReq)) != - 4 * stuff->nClients + SIZEOF(xRecordRange) * stuff->nRanges) - return BadLength; - - if (stuff->elementHeader & - ~(XRecordFromClientSequence|XRecordFromClientTime|XRecordFromServerTime)) - { - client->errorValue = stuff->elementHeader; - return BadValue; - } - - recordingClient = pContext->pRecordingClient ? - pContext->pRecordingClient->clientAsMask : 0; - err = RecordSanityCheckClientSpecifiers(client, (XID *)&stuff[1], - stuff->nClients, recordingClient); - if (err != Success) return err; - - pRange = (xRecordRange *)(((XID *)&stuff[1]) + stuff->nClients); - for (i = 0; i < stuff->nRanges; i++, pRange++) - { - if (pRange->coreRequestsFirst > pRange->coreRequestsLast) - { - client->errorValue = pRange->coreRequestsFirst; - return BadValue; - } - if (pRange->coreRepliesFirst > pRange->coreRepliesLast) - { - client->errorValue = pRange->coreRepliesFirst; - return BadValue; - } - if ((pRange->extRequestsMajorFirst || pRange->extRequestsMajorLast) && - (pRange->extRequestsMajorFirst < 128 || - pRange->extRequestsMajorLast < 128 || - pRange->extRequestsMajorFirst > pRange->extRequestsMajorLast)) - { - client->errorValue = pRange->extRequestsMajorFirst; - return BadValue; - } - if (pRange->extRequestsMinorFirst > pRange->extRequestsMinorLast) - { - client->errorValue = pRange->extRequestsMinorFirst; - return BadValue; - } - if ((pRange->extRepliesMajorFirst || pRange->extRepliesMajorLast) && - (pRange->extRepliesMajorFirst < 128 || - pRange->extRepliesMajorLast < 128 || - pRange->extRepliesMajorFirst > pRange->extRepliesMajorLast)) - { - client->errorValue = pRange->extRepliesMajorFirst; - return BadValue; - } - if (pRange->extRepliesMinorFirst > pRange->extRepliesMinorLast) - { - client->errorValue = pRange->extRepliesMinorFirst; - return BadValue; - } - if ((pRange->deliveredEventsFirst || pRange->deliveredEventsLast) && - (pRange->deliveredEventsFirst < 2 || - pRange->deliveredEventsLast < 2 || - pRange->deliveredEventsFirst > pRange->deliveredEventsLast)) - { - client->errorValue = pRange->deliveredEventsFirst; - return BadValue; - } - if ((pRange->deviceEventsFirst || pRange->deviceEventsLast) && - (pRange->deviceEventsFirst < 2 || - pRange->deviceEventsLast < 2 || - pRange->deviceEventsFirst > pRange->deviceEventsLast)) - { - client->errorValue = pRange->deviceEventsFirst; - return BadValue; - } - if (pRange->errorsFirst > pRange->errorsLast) - { - client->errorValue = pRange->errorsFirst; - return BadValue; - } - if (pRange->clientStarted != xFalse && pRange->clientStarted != xTrue) - { - client->errorValue = pRange->clientStarted; - return BadValue; - } - if (pRange->clientDied != xFalse && pRange->clientDied != xTrue) - { - client->errorValue = pRange->clientDied; - return BadValue; - } - } /* end for each range */ - return Success; -} /* end RecordSanityCheckRegisterClients */ - -/* This is a tactical structure used to gather information about all the sets - * (RecordSetPtr) that need to be created for an RCAP in the process of - * digesting a list of RECORDRANGEs (converting it to the internal - * representation). - */ -typedef struct -{ - int nintervals; /* number of intervals in following array */ - RecordSetInterval *intervals; /* array of intervals for this set */ - int size; /* size of intevals array; >= nintervals */ - int align; /* alignment restriction for set */ - int offset; /* where to store set pointer rel. to start of RCAP */ - short first, last; /* if for extension, major opcode interval */ -} SetInfoRec, *SetInfoPtr; - -/* These constant are used to index into an array of SetInfoRec. */ -enum {REQ, /* set info for requests */ - REP, /* set info for replies */ - ERR, /* set info for errors */ - DEV, /* set info for device events */ - DLEV, /* set info for delivered events */ - PREDEFSETS}; /* number of predefined array entries */ - - -/* RecordAllocIntervals - * - * Arguments: - * psi is a pointer to a SetInfoRec whose intervals pointer is NULL. - * nIntervals is the desired size of the intervals array. - * - * Returns: BadAlloc if a memory allocation error occurred, else Success. - * - * Side Effects: - * If Success is returned, psi->intervals is a pointer to size - * RecordSetIntervals, all zeroed, and psi->size is set to size. - */ -static int -RecordAllocIntervals(SetInfoPtr psi, int nIntervals) -{ - assert(!psi->intervals); - psi->intervals = (RecordSetInterval *) - xalloc(nIntervals * sizeof(RecordSetInterval)); - if (!psi->intervals) - return BadAlloc; - bzero(psi->intervals, nIntervals * sizeof(RecordSetInterval)); - psi->size = nIntervals; - return Success; -} /* end RecordAllocIntervals */ - - -/* RecordConvertRangesToIntervals - * - * Arguments: - * psi is a pointer to the SetInfoRec we are building. - * pRanges is an array of xRecordRanges. - * nRanges is the number of elements in pRanges. - * byteoffset is the offset from the start of an xRecordRange of the - * two bytes (1 for first, 1 for last) we are interested in. - * pExtSetInfo, if non-NULL, indicates that the two bytes mentioned - * above are followed by four bytes (2 for first, 2 for last) - * representing a minor opcode range, and this information should be - * stored in one of the SetInfoRecs starting at pExtSetInfo. - * pnExtSetInfo is the number of elements in the pExtSetInfo array. - * - * Returns: BadAlloc if a memory allocation error occurred, else Success. - * - * Side Effects: - * The slice of pRanges indicated by byteoffset is stored in psi. - * If pExtSetInfo is non-NULL, minor opcode intervals are stored - * in an existing SetInfoRec if the major opcode interval matches, else - * they are stored in a new SetInfoRec, and *pnExtSetInfo is - * increased accordingly. - */ -static int -RecordConvertRangesToIntervals( - SetInfoPtr psi, - xRecordRange *pRanges, - int nRanges, - int byteoffset, - SetInfoPtr pExtSetInfo, - int *pnExtSetInfo -) -{ - int i; - CARD8 *pCARD8; - int first, last; - int err; - - for (i = 0; i < nRanges; i++, pRanges++) - { - pCARD8 = ((CARD8 *)pRanges) + byteoffset; - first = pCARD8[0]; - last = pCARD8[1]; - if (first || last) - { - if (!psi->intervals) - { - err = RecordAllocIntervals(psi, 2 * (nRanges - i)); - if (err != Success) - return err; - } - psi->intervals[psi->nintervals].first = first; - psi->intervals[psi->nintervals].last = last; - psi->nintervals++; - assert(psi->nintervals <= psi->size); - if (pExtSetInfo) - { - SetInfoPtr pesi = pExtSetInfo; - CARD16 *pCARD16 = (CARD16 *)(pCARD8 + 2); - int j; - - for (j = 0; j < *pnExtSetInfo; j++, pesi++) - { - if ( (first == pesi->first) && (last == pesi->last) ) - break; - } - if (j == *pnExtSetInfo) - { - err = RecordAllocIntervals(pesi, 2 * (nRanges - i)); - if (err != Success) - return err; - pesi->first = first; - pesi->last = last; - (*pnExtSetInfo)++; - } - pesi->intervals[pesi->nintervals].first = pCARD16[0]; - pesi->intervals[pesi->nintervals].last = pCARD16[1]; - pesi->nintervals++; - assert(pesi->nintervals <= pesi->size); - } - } - } - return Success; -} /* end RecordConvertRangesToIntervals */ - -#define offset_of(_structure, _field) \ - ((char *)(& (_structure . _field)) - (char *)(&_structure)) - -/* RecordRegisterClients - * - * Arguments: - * pContext is the context on which to register the clients. - * client is the client that issued the RecordCreateContext or - * RecordRegisterClients request. - * stuff is a pointer to the request. - * - * Returns: - * Any one of several possible error values defined by the protocol. - * Success if everything is OK. - * - * Side Effects: - * If different element headers are specified, the context is flushed. - * If any of the specified clients are already registered on the - * context, they are first unregistered. A new RCAP is created to - * hold the specified protocol and clients, and it is linked onto the - * context. If the context is enabled, appropriate hooks are installed - * to record the new clients and protocol. - */ -static int -RecordRegisterClients(RecordContextPtr pContext, ClientPtr client, xRecordRegisterClientsReq *stuff) -{ - int err; - int i; - SetInfoPtr si; - int maxSets; - int nExtReqSets = 0; - int nExtRepSets = 0; - int extReqSetsOffset = 0; - int extRepSetsOffset = 0; - SetInfoPtr pExtReqSets, pExtRepSets; - int clientListOffset; - XID *pCanonClients; - int clientStarted = 0, clientDied = 0; - xRecordRange *pRanges, rr; - int nClients; - int sizeClients; - int totRCAPsize; - RecordClientsAndProtocolPtr pRCAP; - int pad; - XID recordingClient; - - /* do all sanity checking up front */ - - err = RecordSanityCheckRegisterClients(pContext, client, stuff); - if (err != Success) - return err; - - /* if element headers changed, flush buffer */ - - if (pContext->elemHeaders != stuff->elementHeader) - { - RecordFlushReplyBuffer(pContext, NULL, 0, NULL, 0); - pContext->elemHeaders = stuff->elementHeader; - } - - nClients = stuff->nClients; - if (!nClients) - /* if empty clients list, we're done. */ - return Success; - - recordingClient = pContext->pRecordingClient ? - pContext->pRecordingClient->clientAsMask : 0; - pCanonClients = RecordCanonicalizeClientSpecifiers((XID *)&stuff[1], - &nClients, recordingClient); - if (!pCanonClients) - return BadAlloc; - - /* We may have to create as many as one set for each "predefined" - * protocol types, plus one per range for extension reuests, plus one per - * range for extension replies. - */ - maxSets = PREDEFSETS + 2 * stuff->nRanges; - si = (SetInfoPtr)xalloc(sizeof(SetInfoRec) * maxSets); - if (!si) - { - err = BadAlloc; - goto bailout; - } - bzero(si, sizeof(SetInfoRec) * maxSets); - - /* theoretically you must do this because NULL may not be all-bits-zero */ - for (i = 0; i < maxSets; i++) - si[i].intervals = NULL; - - pExtReqSets = si + PREDEFSETS; - pExtRepSets = pExtReqSets + stuff->nRanges; - - pRanges = (xRecordRange *)(((XID *)&stuff[1]) + stuff->nClients); - - err = RecordConvertRangesToIntervals(&si[REQ], pRanges, stuff->nRanges, - offset_of(rr, coreRequestsFirst), NULL, NULL); - if (err != Success) goto bailout; - - err = RecordConvertRangesToIntervals(&si[REQ], pRanges, stuff->nRanges, - offset_of(rr, extRequestsMajorFirst), pExtReqSets, &nExtReqSets); - if (err != Success) goto bailout; - - err = RecordConvertRangesToIntervals(&si[REP], pRanges, stuff->nRanges, - offset_of(rr, coreRepliesFirst), NULL, NULL); - if (err != Success) goto bailout; - - err = RecordConvertRangesToIntervals(&si[REP], pRanges, stuff->nRanges, - offset_of(rr, extRepliesMajorFirst), pExtRepSets, &nExtRepSets); - if (err != Success) goto bailout; - - err = RecordConvertRangesToIntervals(&si[ERR], pRanges, stuff->nRanges, - offset_of(rr, errorsFirst), NULL, NULL); - if (err != Success) goto bailout; - - err = RecordConvertRangesToIntervals(&si[DLEV], pRanges, stuff->nRanges, - offset_of(rr, deliveredEventsFirst), NULL, NULL); - if (err != Success) goto bailout; - - err = RecordConvertRangesToIntervals(&si[DEV], pRanges, stuff->nRanges, - offset_of(rr, deviceEventsFirst), NULL, NULL); - if (err != Success) goto bailout; - - /* collect client-started and client-died */ - - for (i = 0; i < stuff->nRanges; i++) - { - if (pRanges[i].clientStarted) clientStarted = TRUE; - if (pRanges[i].clientDied) clientDied = TRUE; - } - - /* We now have all the information collected to create all the sets, - * and we can compute the total memory required for the RCAP. - */ - - totRCAPsize = sizeof(RecordClientsAndProtocolRec); - - /* leave a little room to grow before forcing a separate allocation */ - sizeClients = nClients + CLIENT_ARRAY_GROWTH_INCREMENT; - pad = RecordPadAlign(totRCAPsize, sizeof(XID)); - clientListOffset = totRCAPsize + pad; - totRCAPsize += pad + sizeClients * sizeof(XID); - - if (nExtReqSets) - { - pad = RecordPadAlign(totRCAPsize, sizeof(RecordSetPtr)); - extReqSetsOffset = totRCAPsize + pad; - totRCAPsize += pad + (nExtReqSets + 1) * sizeof(RecordMinorOpRec); - } - if (nExtRepSets) - { - pad = RecordPadAlign(totRCAPsize, sizeof(RecordSetPtr)); - extRepSetsOffset = totRCAPsize + pad; - totRCAPsize += pad + (nExtRepSets + 1) * sizeof(RecordMinorOpRec); - } - - for (i = 0; i < maxSets; i++) - { - if (si[i].nintervals) - { - si[i].size = RecordSetMemoryRequirements( - si[i].intervals, si[i].nintervals, &si[i].align); - pad = RecordPadAlign(totRCAPsize, si[i].align); - si[i].offset = pad + totRCAPsize; - totRCAPsize += pad + si[i].size; - } - } - - /* allocate memory for the whole RCAP */ - - pRCAP = (RecordClientsAndProtocolPtr)xalloc(totRCAPsize); - if (!pRCAP) - { - err = BadAlloc; - goto bailout; - } - - /* fill in the RCAP */ - - pRCAP->pContext = pContext; - pRCAP->pClientIDs = (XID *)((char *)pRCAP + clientListOffset); - pRCAP->numClients = nClients; - pRCAP->sizeClients = sizeClients; - pRCAP->clientIDsSeparatelyAllocated = 0; - for (i = 0; i < nClients; i++) - { - RecordDeleteClientFromContext(pContext, pCanonClients[i]); - pRCAP->pClientIDs[i] = pCanonClients[i]; - } - - /* create all the sets */ - - if (si[REQ].intervals) - { - pRCAP->pRequestMajorOpSet = - RecordCreateSet(si[REQ].intervals, si[REQ].nintervals, - (RecordSetPtr)((char *)pRCAP + si[REQ].offset), si[REQ].size); - } - else pRCAP->pRequestMajorOpSet = NULL; - - if (si[REP].intervals) - { - pRCAP->pReplyMajorOpSet = - RecordCreateSet(si[REP].intervals, si[REP].nintervals, - (RecordSetPtr)((char *)pRCAP + si[REP].offset), si[REP].size); - } - else pRCAP->pReplyMajorOpSet = NULL; - - if (si[ERR].intervals) - { - pRCAP->pErrorSet = - RecordCreateSet(si[ERR].intervals, si[ERR].nintervals, - (RecordSetPtr)((char *)pRCAP + si[ERR].offset), si[ERR].size); - } - else pRCAP->pErrorSet = NULL; - - if (si[DEV].intervals) - { - pRCAP->pDeviceEventSet = - RecordCreateSet(si[DEV].intervals, si[DEV].nintervals, - (RecordSetPtr)((char *)pRCAP + si[DEV].offset), si[DEV].size); - } - else pRCAP->pDeviceEventSet = NULL; - - if (si[DLEV].intervals) - { - pRCAP->pDeliveredEventSet = - RecordCreateSet(si[DLEV].intervals, si[DLEV].nintervals, - (RecordSetPtr)((char *)pRCAP + si[DLEV].offset), si[DLEV].size); - } - else pRCAP->pDeliveredEventSet = NULL; - - if (nExtReqSets) - { - pRCAP->pRequestMinOpInfo = (RecordMinorOpPtr) - ((char *)pRCAP + extReqSetsOffset); - pRCAP->pRequestMinOpInfo[0].count = nExtReqSets; - for (i = 0; i < nExtReqSets; i++, pExtReqSets++) - { - pRCAP->pRequestMinOpInfo[i+1].major.first = pExtReqSets->first; - pRCAP->pRequestMinOpInfo[i+1].major.last = pExtReqSets->last; - pRCAP->pRequestMinOpInfo[i+1].major.pMinOpSet = - RecordCreateSet(pExtReqSets->intervals, - pExtReqSets->nintervals, - (RecordSetPtr)((char *)pRCAP + pExtReqSets->offset), - pExtReqSets->size); - } - } - else pRCAP->pRequestMinOpInfo = NULL; - - if (nExtRepSets) - { - pRCAP->pReplyMinOpInfo = (RecordMinorOpPtr) - ((char *)pRCAP + extRepSetsOffset); - pRCAP->pReplyMinOpInfo[0].count = nExtRepSets; - for (i = 0; i < nExtRepSets; i++, pExtRepSets++) - { - pRCAP->pReplyMinOpInfo[i+1].major.first = pExtRepSets->first; - pRCAP->pReplyMinOpInfo[i+1].major.last = pExtRepSets->last; - pRCAP->pReplyMinOpInfo[i+1].major.pMinOpSet = - RecordCreateSet(pExtRepSets->intervals, - pExtRepSets->nintervals, - (RecordSetPtr)((char *)pRCAP + pExtRepSets->offset), - pExtRepSets->size); - } - } - else pRCAP->pReplyMinOpInfo = NULL; - - pRCAP->clientStarted = clientStarted; - pRCAP->clientDied = clientDied; - - /* link the RCAP onto the context */ - - pRCAP->pNextRCAP = pContext->pListOfRCAP; - pContext->pListOfRCAP = pRCAP; - - if (pContext->pRecordingClient) /* context enabled */ - RecordInstallHooks(pRCAP, 0); - -bailout: - if (si) - { - for (i = 0; i < maxSets; i++) - if (si[i].intervals) - xfree(si[i].intervals); - xfree(si); - } - if (pCanonClients && pCanonClients != (XID *)&stuff[1]) - xfree(pCanonClients); - return err; -} /* RecordRegisterClients */ - - -/* Proc functions all take a client argument, execute the request in - * client->requestBuffer, and return a protocol error status. - */ - -static int -ProcRecordQueryVersion(ClientPtr client) -{ - /* REQUEST(xRecordQueryVersionReq); */ - xRecordQueryVersionReply rep; - int n; - - REQUEST_SIZE_MATCH(xRecordQueryVersionReq); - rep.type = X_Reply; - rep.sequenceNumber = client->sequence; - rep.length = 0; - rep.majorVersion = SERVER_RECORD_MAJOR_VERSION; - rep.minorVersion = SERVER_RECORD_MINOR_VERSION; - if(client->swapped) - { - swaps(&rep.sequenceNumber, n); - swaps(&rep.majorVersion, n); - swaps(&rep.minorVersion, n); - } - (void)WriteToClient(client, sizeof(xRecordQueryVersionReply), - (char *)&rep); - return (client->noClientException); -} /* ProcRecordQueryVersion */ - - -static int -ProcRecordCreateContext(ClientPtr client) -{ - REQUEST(xRecordCreateContextReq); - RecordContextPtr pContext; - RecordContextPtr *ppNewAllContexts = NULL; - int err = BadAlloc; - - REQUEST_AT_LEAST_SIZE(xRecordCreateContextReq); - LEGAL_NEW_RESOURCE(stuff->context, client); - - pContext = (RecordContextPtr)xalloc(sizeof(RecordContextRec)); - if (!pContext) - goto bailout; - - /* make sure there is room in ppAllContexts to store the new context */ - - ppNewAllContexts = (RecordContextPtr *) - xrealloc(ppAllContexts, sizeof(RecordContextPtr) * (numContexts + 1)); - if (!ppNewAllContexts) - goto bailout; - ppAllContexts = ppNewAllContexts; - - pContext->id = stuff->context; - pContext->pRecordingClient = NULL; - pContext->pListOfRCAP = NULL; - pContext->elemHeaders = 0; - pContext->bufCategory = 0; - pContext->numBufBytes = 0; - pContext->pBufClient = NULL; - pContext->continuedReply = 0; - - err = RecordRegisterClients(pContext, client, - (xRecordRegisterClientsReq *)stuff); - if (err != Success) - goto bailout; - - if (AddResource(pContext->id, RTContext, pContext)) - { - ppAllContexts[numContexts++] = pContext; - return Success; - } - else - { - RecordDeleteContext((pointer)pContext, pContext->id); - err = BadAlloc; - } -bailout: - if (pContext) - xfree(pContext); - return err; -} /* ProcRecordCreateContext */ - - -static int -ProcRecordRegisterClients(ClientPtr client) -{ - RecordContextPtr pContext; - REQUEST(xRecordRegisterClientsReq); - - REQUEST_AT_LEAST_SIZE(xRecordRegisterClientsReq); - VERIFY_CONTEXT(pContext, stuff->context, client); - - return RecordRegisterClients(pContext, client, stuff); -} /* ProcRecordRegisterClients */ - - -static int -ProcRecordUnregisterClients(ClientPtr client) -{ - RecordContextPtr pContext; - int err; - REQUEST(xRecordUnregisterClientsReq); - XID *pCanonClients; - int nClients; - int i; - - REQUEST_AT_LEAST_SIZE(xRecordUnregisterClientsReq); - if ((client->req_len << 2) - SIZEOF(xRecordUnregisterClientsReq) != - 4 * stuff->nClients) - return BadLength; - VERIFY_CONTEXT(pContext, stuff->context, client); - err = RecordSanityCheckClientSpecifiers(client, (XID *)&stuff[1], - stuff->nClients, 0); - if (err != Success) - return err; - - nClients = stuff->nClients; - pCanonClients = RecordCanonicalizeClientSpecifiers((XID *)&stuff[1], - &nClients, 0); - if (!pCanonClients) - return BadAlloc; - - for (i = 0; i < nClients; i++) - { - RecordDeleteClientFromContext(pContext, pCanonClients[i]); - } - if (pCanonClients != (XID *)&stuff[1]) - xfree(pCanonClients); - return Success; -} /* ProcRecordUnregisterClients */ - - -/****************************************************************************/ - -/* stuff for GetContext */ - -/* This is a tactical structure used to hold the xRecordRanges as they are - * being reconstituted from the sets in the RCAPs. - */ - -typedef struct { - xRecordRange *pRanges; /* array of xRecordRanges for one RCAP */ - int size; /* number of elements in pRanges, >= nRanges */ - int nRanges; /* number of occupied element of pRanges */ -} GetContextRangeInfoRec, *GetContextRangeInfoPtr; - - -/* RecordAllocRanges - * - * Arguments: - * pri is a pointer to a GetContextRangeInfoRec to allocate for. - * nRanges is the number of xRecordRanges desired for pri. - * - * Returns: BadAlloc if a memory allocation error occurred, else Success. - * - * Side Effects: - * If Success is returned, pri->pRanges points to at least nRanges - * ranges. pri->nRanges is set to nRanges. pri->size is the actual - * number of ranges. Newly allocated ranges are zeroed. - */ -static int -RecordAllocRanges(GetContextRangeInfoPtr pri, int nRanges) -{ - int newsize; - xRecordRange *pNewRange; -#define SZINCR 8 - - newsize = max(pri->size + SZINCR, nRanges); - pNewRange = (xRecordRange *)xrealloc(pri->pRanges, - newsize * sizeof(xRecordRange)); - if (!pNewRange) - return BadAlloc; - - pri->pRanges = pNewRange; - pri->size = newsize; - bzero(&pri->pRanges[pri->size - SZINCR], SZINCR * sizeof(xRecordRange)); - if (pri->nRanges < nRanges) - pri->nRanges = nRanges; - return Success; -} /* RecordAllocRanges */ - - -/* RecordConvertSetToRanges - * - * Arguments: - * pSet is the set to be converted. - * pri is where the result should be stored. - * byteoffset is the offset from the start of an xRecordRange of the - * two vales (first, last) we are interested in. - * card8 is TRUE if the vales are one byte each and FALSE if two bytes - * each. - * imax is the largest set value to store in pri->pRanges. - * pStartIndex, if non-NULL, is the index of the first range in - * pri->pRanges that should be stored to. If NULL, - * start at index 0. - * - * Returns: BadAlloc if a memory allocation error occurred, else Success. - * - * Side Effects: - * If Success is returned, the slice of pri->pRanges indicated by - * byteoffset and card8 is filled in with the intervals from pSet. - * if pStartIndex was non-NULL, *pStartIndex is filled in with one - * more than the index of the last xRecordRange that was touched. - */ -static int -RecordConvertSetToRanges( - RecordSetPtr pSet, - GetContextRangeInfoPtr pri, - int byteoffset, - Bool card8, - unsigned int imax, - int *pStartIndex -) -{ - int nRanges; - RecordSetIteratePtr pIter = NULL; - RecordSetInterval interval; - CARD8 *pCARD8; - CARD16 *pCARD16; - int err; - - if (!pSet) - return Success; - - nRanges = pStartIndex ? *pStartIndex : 0; - while ((pIter = RecordIterateSet(pSet, pIter, &interval))) - { - if (interval.first > imax) break; - if (interval.last > imax) interval.last = imax; - nRanges++; - if (nRanges > pri->size) - { - err = RecordAllocRanges(pri, nRanges); - if (err != Success) - return err; - } - else - pri->nRanges = max(pri->nRanges, nRanges); - if (card8) - { - pCARD8 = ((CARD8 *)&pri->pRanges[nRanges-1]) + byteoffset; - *pCARD8++ = interval.first; - *pCARD8 = interval.last; - } - else - { - pCARD16 = (CARD16 *) - (((char *)&pri->pRanges[nRanges-1]) + byteoffset); - *pCARD16++ = interval.first; - *pCARD16 = interval.last; - } - } - if (pStartIndex) - *pStartIndex = nRanges; - return Success; -} /* RecordConvertSetToRanges */ - - -/* RecordConvertMinorOpInfoToRanges - * - * Arguments: - * pMinOpInfo is the minor opcode info to convert to xRecordRanges. - * pri is where the result should be stored. - * byteoffset is the offset from the start of an xRecordRange of the - * four vales (CARD8 major_first, CARD8 major_last, - * CARD16 minor_first, CARD16 minor_last) we are going to store. - * - * Returns: BadAlloc if a memory allocation error occurred, else Success. - * - * Side Effects: - * If Success is returned, the slice of pri->pRanges indicated by - * byteoffset is filled in with the information from pMinOpInfo. - */ -static int -RecordConvertMinorOpInfoToRanges( - RecordMinorOpPtr pMinOpInfo, - GetContextRangeInfoPtr pri, - int byteoffset -) -{ - int nsets; - int start; - int i; - int err; - - if (!pMinOpInfo) - return Success; - - nsets = pMinOpInfo->count; - pMinOpInfo++; - start = 0; - for (i = 0; i < nsets; i++) - { - int j, s; - s = start; - err = RecordConvertSetToRanges(pMinOpInfo[i].major.pMinOpSet, pri, - byteoffset + 2, FALSE, 65535, &start); - if (err != Success) return err; - for (j = s; j < start; j++) - { - CARD8 *pCARD8 = ((CARD8 *)&pri->pRanges[j]) + byteoffset; - *pCARD8++ = pMinOpInfo[i].major.first; - *pCARD8 = pMinOpInfo[i].major.last; - } - } - return Success; -} /* RecordConvertMinorOpInfoToRanges */ - - -/* RecordSwapRanges - * - * Arguments: - * pRanges is an array of xRecordRanges. - * nRanges is the number of elements in pRanges. - * - * Returns: nothing. - * - * Side Effects: - * The 16 bit fields of each xRecordRange are byte swapped. - */ -static void -RecordSwapRanges(xRecordRange *pRanges, int nRanges) -{ - int i; - register char n; - for (i = 0; i < nRanges; i++, pRanges++) - { - swaps(&pRanges->extRequestsMinorFirst, n); - swaps(&pRanges->extRequestsMinorLast, n); - swaps(&pRanges->extRepliesMinorFirst, n); - swaps(&pRanges->extRepliesMinorLast, n); - } -} /* RecordSwapRanges */ - - -static int -ProcRecordGetContext(ClientPtr client) -{ - RecordContextPtr pContext; - REQUEST(xRecordGetContextReq); - xRecordGetContextReply rep; - int n; - RecordClientsAndProtocolPtr pRCAP; - int nRCAPs = 0; - GetContextRangeInfoPtr pRangeInfo; - GetContextRangeInfoPtr pri; - int i; - int err; - - REQUEST_SIZE_MATCH(xRecordGetContextReq); - VERIFY_CONTEXT(pContext, stuff->context, client); - - /* how many RCAPs are there on this context? */ - - for (pRCAP = pContext->pListOfRCAP; pRCAP; pRCAP = pRCAP->pNextRCAP) - nRCAPs++; - - /* allocate and initialize space for record range info */ - - pRangeInfo = (GetContextRangeInfoPtr)xalloc( - nRCAPs * sizeof(GetContextRangeInfoRec)); - if (!pRangeInfo && nRCAPs > 0) - return BadAlloc; - for (i = 0; i < nRCAPs; i++) - { - pRangeInfo[i].pRanges = NULL; - pRangeInfo[i].size = 0; - pRangeInfo[i].nRanges = 0; - } - - /* convert the RCAP (internal) representation of the recorded protocol - * to the wire protocol (external) representation, storing the information - * for the ith RCAP in pri[i] - */ - - for (pRCAP = pContext->pListOfRCAP, pri = pRangeInfo; - pRCAP; - pRCAP = pRCAP->pNextRCAP, pri++) - { - xRecordRange rr; - - err = RecordConvertSetToRanges(pRCAP->pRequestMajorOpSet, pri, - offset_of(rr, coreRequestsFirst), TRUE, 127, NULL); - if (err != Success) goto bailout; - - err = RecordConvertSetToRanges(pRCAP->pReplyMajorOpSet, pri, - offset_of(rr, coreRepliesFirst), TRUE, 127, NULL); - if (err != Success) goto bailout; - - err = RecordConvertSetToRanges(pRCAP->pDeliveredEventSet, pri, - offset_of(rr, deliveredEventsFirst), TRUE, 255, NULL); - if (err != Success) goto bailout; - - err = RecordConvertSetToRanges(pRCAP->pDeviceEventSet, pri, - offset_of(rr, deviceEventsFirst), TRUE, 255, NULL); - if (err != Success) goto bailout; - - err = RecordConvertSetToRanges(pRCAP->pErrorSet, pri, - offset_of(rr, errorsFirst), TRUE, 255, NULL); - if (err != Success) goto bailout; - - err = RecordConvertMinorOpInfoToRanges(pRCAP->pRequestMinOpInfo, - pri, offset_of(rr, extRequestsMajorFirst)); - if (err != Success) goto bailout; - - err = RecordConvertMinorOpInfoToRanges(pRCAP->pReplyMinOpInfo, - pri, offset_of(rr, extRepliesMajorFirst)); - if (err != Success) goto bailout; - - if (pRCAP->clientStarted || pRCAP->clientDied) - { - if (pri->nRanges == 0) - RecordAllocRanges(pri, 1); - pri->pRanges[0].clientStarted = pRCAP->clientStarted; - pri->pRanges[0].clientDied = pRCAP->clientDied; - } - } - - /* calculate number of clients and reply length */ - - rep.nClients = 0; - rep.length = 0; - for (pRCAP = pContext->pListOfRCAP, pri = pRangeInfo; - pRCAP; - pRCAP = pRCAP->pNextRCAP, pri++) - { - rep.nClients += pRCAP->numClients; - rep.length += pRCAP->numClients * - ( bytes_to_int32(sizeof(xRecordClientInfo)) + - pri->nRanges * bytes_to_int32(sizeof(xRecordRange))); - } - - /* write the reply header */ - - rep.type = X_Reply; - rep.sequenceNumber = client->sequence; - rep.enabled = pContext->pRecordingClient != NULL; - rep.elementHeader = pContext->elemHeaders; - if(client->swapped) - { - swaps(&rep.sequenceNumber, n); - swapl(&rep.length, n); - swapl(&rep.nClients, n); - } - (void)WriteToClient(client, sizeof(xRecordGetContextReply), - (char *)&rep); - - /* write all the CLIENT_INFOs */ - - for (pRCAP = pContext->pListOfRCAP, pri = pRangeInfo; - pRCAP; - pRCAP = pRCAP->pNextRCAP, pri++) - { - xRecordClientInfo rci; - rci.nRanges = pri->nRanges; - if (client->swapped) - { - swapl(&rci.nRanges, n); - RecordSwapRanges(pri->pRanges, pri->nRanges); - } - for (i = 0; i < pRCAP->numClients; i++) - { - rci.clientResource = pRCAP->pClientIDs[i]; - if (client->swapped) swapl(&rci.clientResource, n); - WriteToClient(client, sizeof(xRecordClientInfo), (char *)&rci); - WriteToClient(client, sizeof(xRecordRange) * pri->nRanges, - (char *)pri->pRanges); - } - } - err = client->noClientException; - -bailout: - for (i = 0; i < nRCAPs; i++) - { - if (pRangeInfo[i].pRanges) xfree(pRangeInfo[i].pRanges); - } - xfree(pRangeInfo); - return err; -} /* ProcRecordGetContext */ - - -static int -ProcRecordEnableContext(ClientPtr client) -{ - RecordContextPtr pContext; - REQUEST(xRecordEnableContextReq); - int i; - RecordClientsAndProtocolPtr pRCAP; - - REQUEST_SIZE_MATCH(xRecordGetContextReq); - VERIFY_CONTEXT(pContext, stuff->context, client); - if (pContext->pRecordingClient) - return BadMatch; /* already enabled */ - - /* install record hooks for each RCAP */ - - for (pRCAP = pContext->pListOfRCAP; pRCAP; pRCAP = pRCAP->pNextRCAP) - { - int err = RecordInstallHooks(pRCAP, 0); - if (err != Success) - { /* undo the previous installs */ - RecordClientsAndProtocolPtr pUninstallRCAP; - for (pUninstallRCAP = pContext->pListOfRCAP; - pUninstallRCAP != pRCAP; - pUninstallRCAP = pUninstallRCAP->pNextRCAP) - { - RecordUninstallHooks(pUninstallRCAP, 0); - } - return err; - } - } - - /* Disallow further request processing on this connection until - * the context is disabled. - */ - IgnoreClient(client); - pContext->pRecordingClient = client; - - /* Don't allow the data connection to record itself; unregister it. */ - RecordDeleteClientFromContext(pContext, - pContext->pRecordingClient->clientAsMask); - - /* move the newly enabled context to the front part of ppAllContexts, - * where all the enabled contexts are - */ - i = RecordFindContextOnAllContexts(pContext); - assert(i >= numEnabledContexts); - if (i != numEnabledContexts) - { - ppAllContexts[i] = ppAllContexts[numEnabledContexts]; - ppAllContexts[numEnabledContexts] = pContext; - } - - ++numEnabledContexts; - assert(numEnabledContexts > 0); - - /* send StartOfData */ - RecordAProtocolElement(pContext, NULL, XRecordStartOfData, NULL, 0, 0); - RecordFlushReplyBuffer(pContext, NULL, 0, NULL, 0); - return Success; -} /* ProcRecordEnableContext */ - - -/* RecordDisableContext - * - * Arguments: - * pContext is the context to disable. - * nRanges is the number of elements in pRanges. - * - * Returns: nothing. - * - * Side Effects: - * If the context was enabled, it is disabled. An EndOfData - * message is sent to the recording client. Recording hooks for - * this context are uninstalled. The context is moved to the - * rear part of the ppAllContexts array. numEnabledContexts is - * decremented. Request processing for the formerly recording client - * is resumed. - */ -static void -RecordDisableContext(RecordContextPtr pContext) -{ - RecordClientsAndProtocolPtr pRCAP; - int i; - - if (!pContext->pRecordingClient) return; - if (!pContext->pRecordingClient->clientGone) - { - RecordAProtocolElement(pContext, NULL, XRecordEndOfData, NULL, 0, 0); - RecordFlushReplyBuffer(pContext, NULL, 0, NULL, 0); - /* Re-enable request processing on this connection. */ - AttendClient(pContext->pRecordingClient); - } - - for (pRCAP = pContext->pListOfRCAP; pRCAP; pRCAP = pRCAP->pNextRCAP) - { - RecordUninstallHooks(pRCAP, 0); - } - - pContext->pRecordingClient = NULL; - - /* move the newly disabled context to the rear part of ppAllContexts, - * where all the disabled contexts are - */ - i = RecordFindContextOnAllContexts(pContext); - assert( (i != -1) && (i < numEnabledContexts) ); - if (i != (numEnabledContexts - 1) ) - { - ppAllContexts[i] = ppAllContexts[numEnabledContexts-1]; - ppAllContexts[numEnabledContexts-1] = pContext; - } - --numEnabledContexts; - assert(numEnabledContexts >= 0); -} /* RecordDisableContext */ - - -static int -ProcRecordDisableContext(ClientPtr client) -{ - RecordContextPtr pContext; - REQUEST(xRecordDisableContextReq); - - REQUEST_SIZE_MATCH(xRecordDisableContextReq); - VERIFY_CONTEXT(pContext, stuff->context, client); - RecordDisableContext(pContext); - return Success; -} /* ProcRecordDisableContext */ - - -/* RecordDeleteContext - * - * Arguments: - * value is the context to delete. - * id is its resource ID. - * - * Returns: Success. - * - * Side Effects: - * Disables the context, frees all associated memory, and removes - * it from the ppAllContexts array. - */ -static int -RecordDeleteContext(pointer value, XID id) -{ - int i; - RecordContextPtr pContext = (RecordContextPtr)value; - RecordClientsAndProtocolPtr pRCAP; - - RecordDisableContext(pContext); - - /* Remove all the clients from all the RCAPs. - * As a result, the RCAPs will be freed. - */ - - while ((pRCAP = pContext->pListOfRCAP)) - { - int numClients = pRCAP->numClients; - /* when the last client is deleted, the RCAP will go away. */ - while(numClients--) - { - RecordDeleteClientFromRCAP(pRCAP, numClients); - } - } - - xfree(pContext); - - /* remove context from AllContexts list */ - - if (-1 != (i = RecordFindContextOnAllContexts(pContext))) - { - ppAllContexts[i] = ppAllContexts[numContexts - 1]; - if (--numContexts == 0) - { - xfree(ppAllContexts); - ppAllContexts = NULL; - } - } - return Success; -} /* RecordDeleteContext */ - - -static int -ProcRecordFreeContext(ClientPtr client) -{ - RecordContextPtr pContext; - REQUEST(xRecordFreeContextReq); - - REQUEST_SIZE_MATCH(xRecordFreeContextReq); - VERIFY_CONTEXT(pContext, stuff->context, client); - FreeResource(stuff->context, RT_NONE); - return Success; -} /* ProcRecordFreeContext */ - - -static int -ProcRecordDispatch(ClientPtr client) -{ - REQUEST(xReq); - - switch (stuff->data) - { - case X_RecordQueryVersion: - return ProcRecordQueryVersion(client); - case X_RecordCreateContext: - return ProcRecordCreateContext(client); - case X_RecordRegisterClients: - return ProcRecordRegisterClients(client); - case X_RecordUnregisterClients: - return ProcRecordUnregisterClients(client); - case X_RecordGetContext: - return ProcRecordGetContext(client); - case X_RecordEnableContext: - return ProcRecordEnableContext(client); - case X_RecordDisableContext: - return ProcRecordDisableContext(client); - case X_RecordFreeContext: - return ProcRecordFreeContext(client); - default: - return BadRequest; - } -} /* ProcRecordDispatch */ - - -static int -SProcRecordQueryVersion(ClientPtr client) -{ - REQUEST(xRecordQueryVersionReq); - register char n; - - swaps(&stuff->length, n); - REQUEST_SIZE_MATCH(xRecordQueryVersionReq); - swaps(&stuff->majorVersion, n); - swaps(&stuff->minorVersion,n); - return ProcRecordQueryVersion(client); -} /* SProcRecordQueryVersion */ - - -static int -SwapCreateRegister(xRecordRegisterClientsReq *stuff) -{ - register char n; - int i; - XID *pClientID; - - swapl(&stuff->context, n); - swapl(&stuff->nClients, n); - swapl(&stuff->nRanges, n); - pClientID = (XID *)&stuff[1]; - if (stuff->nClients > stuff->length - bytes_to_int32(sz_xRecordRegisterClientsReq)) - return BadLength; - for (i = 0; i < stuff->nClients; i++, pClientID++) - { - swapl(pClientID, n); - } - if (stuff->nRanges > stuff->length - bytes_to_int32(sz_xRecordRegisterClientsReq) - - stuff->nClients) - return BadLength; - RecordSwapRanges((xRecordRange *)pClientID, stuff->nRanges); - return Success; -} /* SwapCreateRegister */ - - -static int -SProcRecordCreateContext(ClientPtr client) -{ - REQUEST(xRecordCreateContextReq); - int status; - register char n; - - swaps(&stuff->length, n); - REQUEST_AT_LEAST_SIZE(xRecordCreateContextReq); - if ((status = SwapCreateRegister((pointer)stuff)) != Success) - return status; - return ProcRecordCreateContext(client); -} /* SProcRecordCreateContext */ - - -static int -SProcRecordRegisterClients(ClientPtr client) -{ - REQUEST(xRecordRegisterClientsReq); - int status; - register char n; - - swaps(&stuff->length, n); - REQUEST_AT_LEAST_SIZE(xRecordRegisterClientsReq); - if ((status = SwapCreateRegister((pointer)stuff)) != Success) - return status; - return ProcRecordRegisterClients(client); -} /* SProcRecordRegisterClients */ - - -static int -SProcRecordUnregisterClients(ClientPtr client) -{ - REQUEST(xRecordUnregisterClientsReq); - register char n; - - swaps(&stuff->length, n); - REQUEST_AT_LEAST_SIZE(xRecordUnregisterClientsReq); - swapl(&stuff->context, n); - swapl(&stuff->nClients, n); - SwapRestL(stuff); - return ProcRecordUnregisterClients(client); -} /* SProcRecordUnregisterClients */ - - -static int -SProcRecordGetContext(ClientPtr client) -{ - REQUEST(xRecordGetContextReq); - register char n; - - swaps(&stuff->length, n); - REQUEST_SIZE_MATCH(xRecordGetContextReq); - swapl(&stuff->context, n); - return ProcRecordGetContext(client); -} /* SProcRecordGetContext */ - -static int -SProcRecordEnableContext(ClientPtr client) -{ - REQUEST(xRecordEnableContextReq); - register char n; - - swaps(&stuff->length, n); - REQUEST_SIZE_MATCH(xRecordEnableContextReq); - swapl(&stuff->context, n); - return ProcRecordEnableContext(client); -} /* SProcRecordEnableContext */ - - -static int -SProcRecordDisableContext(ClientPtr client) -{ - REQUEST(xRecordDisableContextReq); - register char n; - - swaps(&stuff->length, n); - REQUEST_SIZE_MATCH(xRecordDisableContextReq); - swapl(&stuff->context, n); - return ProcRecordDisableContext(client); -} /* SProcRecordDisableContext */ - - -static int -SProcRecordFreeContext(ClientPtr client) -{ - REQUEST(xRecordFreeContextReq); - register char n; - - swaps(&stuff->length, n); - REQUEST_SIZE_MATCH(xRecordFreeContextReq); - swapl(&stuff->context, n); - return ProcRecordFreeContext(client); -} /* SProcRecordFreeContext */ - - -static int -SProcRecordDispatch(ClientPtr client) -{ - REQUEST(xReq); - - switch (stuff->data) - { - case X_RecordQueryVersion: - return SProcRecordQueryVersion(client); - case X_RecordCreateContext: - return SProcRecordCreateContext(client); - case X_RecordRegisterClients: - return SProcRecordRegisterClients(client); - case X_RecordUnregisterClients: - return SProcRecordUnregisterClients(client); - case X_RecordGetContext: - return SProcRecordGetContext(client); - case X_RecordEnableContext: - return SProcRecordEnableContext(client); - case X_RecordDisableContext: - return SProcRecordDisableContext(client); - case X_RecordFreeContext: - return SProcRecordFreeContext(client); - default: - return BadRequest; - } -} /* SProcRecordDispatch */ - -/* RecordConnectionSetupInfo - * - * Arguments: - * pContext is an enabled context that specifies recording of - * connection setup info. - * pci holds the connection setup info. - * - * Returns: nothing. - * - * Side Effects: - * The connection setup info is sent to the recording client. - */ -static void -RecordConnectionSetupInfo(RecordContextPtr pContext, NewClientInfoRec *pci) -{ - int prefixsize = SIZEOF(xConnSetupPrefix); - int restsize = pci->prefix->length * 4; - - if (pci->client->swapped) - { - char *pConnSetup = (char *)xalloc(prefixsize + restsize); - if (!pConnSetup) - return; - SwapConnSetupPrefix(pci->prefix, (xConnSetupPrefix*)pConnSetup); - SwapConnSetupInfo((char*)pci->setup, (char*)(pConnSetup + prefixsize)); - RecordAProtocolElement(pContext, pci->client, XRecordClientStarted, - (pointer)pConnSetup, prefixsize + restsize, 0); - xfree(pConnSetup); - } - else - { - /* don't alloc and copy as in the swapped case; just send the - * data in two pieces - */ - RecordAProtocolElement(pContext, pci->client, XRecordClientStarted, - (pointer)pci->prefix, prefixsize, restsize); - RecordAProtocolElement(pContext, pci->client, XRecordClientStarted, - (pointer)pci->setup, restsize, /* continuation */ -1); - } -} /* RecordConnectionSetupInfo */ - - -/* RecordDeleteContext - * - * Arguments: - * pcbl is &ClientStateCallback. - * nullata is NULL. - * calldata is a pointer to a NewClientInfoRec (include/dixstruct.h) - * which contains information about client state changes. - * - * Returns: nothing. - * - * Side Effects: - * If a new client has connected and any contexts have specified - * XRecordFutureClients, the new client is registered on those contexts. - * If any of those contexts specify recording of the connection setup - * info, it is recorded. - * - * If an existing client has disconnected, it is deleted from any - * contexts that it was registered on. If any of those contexts - * specified XRecordClientDied, they record a ClientDied protocol element. - * If the disconnectiong client happened to be the data connection of an - * enabled context, the context is disabled. - */ - -static void -RecordAClientStateChange(CallbackListPtr *pcbl, pointer nulldata, pointer calldata) -{ - NewClientInfoRec *pci = (NewClientInfoRec *)calldata; - int i; - ClientPtr pClient = pci->client; - - switch (pClient->clientState) - { - case ClientStateRunning: /* new client */ - for (i = 0; i < numContexts; i++) - { - RecordClientsAndProtocolPtr pRCAP; - RecordContextPtr pContext = ppAllContexts[i]; - - if ((pRCAP = RecordFindClientOnContext(pContext, - XRecordFutureClients, NULL))) - { - RecordAddClientToRCAP(pRCAP, pClient->clientAsMask); - if (pContext->pRecordingClient && pRCAP->clientStarted) - RecordConnectionSetupInfo(pContext, pci); - } - } - break; - - case ClientStateGone: - case ClientStateRetained: /* client disconnected */ - for (i = 0; i < numContexts; i++) - { - RecordClientsAndProtocolPtr pRCAP; - RecordContextPtr pContext = ppAllContexts[i]; - int pos; - - if (pContext->pRecordingClient == pClient) - RecordDisableContext(pContext); - if ((pRCAP = RecordFindClientOnContext(pContext, - pClient->clientAsMask, &pos))) - { - if (pContext->pRecordingClient && pRCAP->clientDied) - RecordAProtocolElement(pContext, pClient, - XRecordClientDied, NULL, 0, 0); - RecordDeleteClientFromRCAP(pRCAP, pos); - } - } - break; - - default: - break; - } /* end switch on client state */ -} /* RecordAClientStateChange */ - - -/* RecordCloseDown - * - * Arguments: - * extEntry is the extension information for RECORD. - * - * Returns: nothing. - * - * Side Effects: - * Performs any cleanup needed by RECORD at server shutdown time. - * - */ -static void -RecordCloseDown(ExtensionEntry *extEntry) -{ - DeleteCallback(&ClientStateCallback, RecordAClientStateChange, NULL); -} /* RecordCloseDown */ - - -/* RecordExtensionInit - * - * Arguments: none. - * - * Returns: nothing. - * - * Side Effects: - * Enables the RECORD extension if possible. - */ -void -RecordExtensionInit(void) -{ - ExtensionEntry *extentry; - - RTContext = CreateNewResourceType(RecordDeleteContext, "RecordContext"); - if (!RTContext) - return; - - ppAllContexts = NULL; - numContexts = numEnabledContexts = numEnabledRCAPs = 0; - - if (!AddCallback(&ClientStateCallback, RecordAClientStateChange, NULL)) - return; - - extentry = AddExtension(RECORD_NAME, RecordNumEvents, RecordNumErrors, - ProcRecordDispatch, SProcRecordDispatch, - RecordCloseDown, StandardMinorOpcode); - if (!extentry) - { - DeleteCallback(&ClientStateCallback, RecordAClientStateChange, NULL); - return; - } - RecordErrorBase = extentry->errorBase; - -} /* RecordExtensionInit */ - +
+/*
+
+Copyright 1995, 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.
+
+Author: David P. Wiggins, The Open Group
+
+This work benefited from earlier work done by Martha Zimet of NCD
+and Jim Haggerty of Metheus.
+
+*/
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "dixstruct.h"
+#include "extnsionst.h"
+#include <X11/extensions/recordproto.h>
+#include "set.h"
+#include "swaprep.h"
+#include "inputstr.h"
+#include "eventconvert.h"
+
+
+#include <stdio.h>
+#include <assert.h>
+
+#ifdef PANORAMIX
+#include "globals.h"
+#include "panoramiX.h"
+#include "panoramiXsrv.h"
+#include "cursor.h"
+#endif
+
+#include "protocol-versions.h"
+
+static RESTYPE RTContext; /* internal resource type for Record contexts */
+static int RecordErrorBase; /* first Record error number */
+
+/* How many bytes of protocol data to buffer in a context. Don't set to less
+ * than 32.
+ */
+#define REPLY_BUF_SIZE 1024
+
+/* Record Context structure */
+
+typedef struct {
+ XID id; /* resource id of context */
+ ClientPtr pRecordingClient; /* client that has context enabled */
+ struct _RecordClientsAndProtocolRec *pListOfRCAP; /* all registered info */
+ ClientPtr pBufClient; /* client whose protocol is in replyBuffer*/
+ unsigned int continuedReply:1; /* recording a reply that is split up? */
+ char elemHeaders; /* element header flags (time/seq no.) */
+ char bufCategory; /* category of protocol in replyBuffer */
+ int numBufBytes; /* number of bytes in replyBuffer */
+ char replyBuffer[REPLY_BUF_SIZE]; /* buffered recorded protocol */
+} RecordContextRec, *RecordContextPtr;
+
+/* RecordMinorOpRec - to hold minor opcode selections for extension requests
+ * and replies
+ */
+
+typedef union {
+ int count; /* first element of array: how many "major" structs to follow */
+ struct { /* rest of array elements are this */
+ short first; /* first major opcode */
+ short last; /* last major opcode */
+ RecordSetPtr pMinOpSet; /* minor opcode set for above major range */
+ } major;
+} RecordMinorOpRec, *RecordMinorOpPtr;
+
+
+/* RecordClientsAndProtocolRec, nicknamed RCAP - holds all the client and
+ * protocol selections passed in a single CreateContext or RegisterClients.
+ * Generally, a context will have one of these from the create and an
+ * additional one for each RegisterClients. RCAPs are freed when all their
+ * clients are unregistered.
+ */
+
+typedef struct _RecordClientsAndProtocolRec {
+ RecordContextPtr pContext; /* context that owns this RCAP */
+ struct _RecordClientsAndProtocolRec *pNextRCAP; /* next RCAP on context */
+ RecordSetPtr pRequestMajorOpSet; /* requests to record */
+ RecordMinorOpPtr pRequestMinOpInfo; /* extension requests to record */
+ RecordSetPtr pReplyMajorOpSet; /* replies to record */
+ RecordMinorOpPtr pReplyMinOpInfo; /* extension replies to record */
+ RecordSetPtr pDeviceEventSet; /* device events to record */
+ RecordSetPtr pDeliveredEventSet; /* delivered events to record */
+ RecordSetPtr pErrorSet; /* errors to record */
+ XID * pClientIDs; /* array of clients to record */
+ short numClients; /* number of clients in pClientIDs */
+ short sizeClients; /* size of pClientIDs array */
+ unsigned int clientStarted:1; /* record new client connections? */
+ unsigned int clientDied:1; /* record client disconnections? */
+ unsigned int clientIDsSeparatelyAllocated:1; /* pClientIDs malloced? */
+} RecordClientsAndProtocolRec, *RecordClientsAndProtocolPtr;
+
+/* how much bigger to make pRCAP->pClientIDs when reallocing */
+#define CLIENT_ARRAY_GROWTH_INCREMENT 4
+
+/* counts the total number of RCAPs belonging to enabled contexts. */
+static int numEnabledRCAPs;
+
+/* void VERIFY_CONTEXT(RecordContextPtr, XID, ClientPtr)
+ * In the spirit of the VERIFY_* macros in dix.h, this macro fills in
+ * the context pointer if the given ID is a valid Record Context, else it
+ * returns an error.
+ */
+#define VERIFY_CONTEXT(_pContext, _contextid, _client) { \
+ int rc = dixLookupResourceByType((pointer *)&(_pContext), _contextid, \
+ RTContext, _client, DixUseAccess); \
+ if (rc != Success) \
+ return (rc == BadValue) ? RecordErrorBase + XRecordBadContext : rc; \
+}
+
+static int RecordDeleteContext(
+ pointer /*value*/,
+ XID /*id*/
+);
+
+void RecordExtensionInit(void);
+
+/***************************************************************************/
+
+/* client private stuff */
+
+/* To make declarations less obfuscated, have a typedef for a pointer to a
+ * Proc function.
+ */
+typedef int (*ProcFunctionPtr)(
+ ClientPtr /*pClient*/
+);
+
+/* Record client private. Generally a client only has one of these if
+ * any of its requests are being recorded.
+ */
+typedef struct {
+/* ptr to client's proc vector before Record stuck its nose in */
+ ProcFunctionPtr *originalVector;
+
+/* proc vector with pointers for recorded requests redirected to the
+ * function RecordARequest
+ */
+ ProcFunctionPtr recordVector[256];
+} RecordClientPrivateRec, *RecordClientPrivatePtr;
+
+static int RecordClientPrivateKeyIndex;
+static DevPrivateKey RecordClientPrivateKey = &RecordClientPrivateKeyIndex;
+
+/* RecordClientPrivatePtr RecordClientPrivate(ClientPtr)
+ * gets the client private of the given client. Syntactic sugar.
+ */
+#define RecordClientPrivate(_pClient) (RecordClientPrivatePtr) \
+ dixLookupPrivate(&(_pClient)->devPrivates, RecordClientPrivateKey)
+
+
+/***************************************************************************/
+
+/* global list of all contexts */
+
+static RecordContextPtr *ppAllContexts;
+
+static int numContexts;/* number of contexts in ppAllContexts */
+
+/* number of currently enabled contexts. All enabled contexts are bunched
+ * up at the front of the ppAllContexts array, from ppAllContexts[0] to
+ * ppAllContexts[numEnabledContexts-1], to eliminate time spent skipping
+ * past disabled contexts.
+ */
+static int numEnabledContexts;
+
+/* RecordFindContextOnAllContexts
+ *
+ * Arguments:
+ * pContext is the context to search for.
+ *
+ * Returns:
+ * The index into the array ppAllContexts at which pContext is stored.
+ * If pContext is not found in ppAllContexts, returns -1.
+ *
+ * Side Effects: none.
+ */
+static int
+RecordFindContextOnAllContexts(RecordContextPtr pContext)
+{
+ int i;
+
+ assert(numContexts >= numEnabledContexts);
+ for (i = 0; i < numContexts; i++)
+ {
+ if (ppAllContexts[i] == pContext)
+ return i;
+ }
+ return -1;
+} /* RecordFindContextOnAllContexts */
+
+
+/***************************************************************************/
+
+/* RecordFlushReplyBuffer
+ *
+ * Arguments:
+ * pContext is the context to flush.
+ * data1 is a pointer to additional data, and len1 is its length in bytes.
+ * data2 is a pointer to additional data, and len2 is its length in bytes.
+ *
+ * Returns: nothing.
+ *
+ * Side Effects:
+ * If the context is enabled, any buffered (recorded) protocol is written
+ * to the recording client, and the number of buffered bytes is set to
+ * zero. If len1 is not zero, data1/len1 are then written to the
+ * recording client, and similarly for data2/len2 (written after
+ * data1/len1).
+ */
+static void
+RecordFlushReplyBuffer(
+ RecordContextPtr pContext,
+ pointer data1,
+ int len1,
+ pointer data2,
+ int len2
+)
+{
+ if (!pContext->pRecordingClient || pContext->pRecordingClient->clientGone)
+ return;
+ if (pContext->numBufBytes)
+ WriteToClient(pContext->pRecordingClient, pContext->numBufBytes,
+ (char *)pContext->replyBuffer);
+ pContext->numBufBytes = 0;
+ if (len1)
+ WriteToClient(pContext->pRecordingClient, len1, (char *)data1);
+ if (len2)
+ WriteToClient(pContext->pRecordingClient, len2, (char *)data2);
+} /* RecordFlushReplyBuffer */
+
+
+/* RecordAProtocolElement
+ *
+ * Arguments:
+ * pContext is the context that is recording a protocol element.
+ * pClient is the client whose protocol is being recorded. For
+ * device events and EndOfData, pClient is NULL.
+ * category is the category of the protocol element, as defined
+ * by the RECORD spec.
+ * data is a pointer to the protocol data, and datalen is its length
+ * in bytes.
+ * futurelen is the number of bytes that will be sent in subsequent
+ * calls to this function to complete this protocol element.
+ * In those subsequent calls, futurelen will be -1 to indicate
+ * that the current data is a continuation of the same protocol
+ * element.
+ *
+ * Returns: nothing.
+ *
+ * Side Effects:
+ * The context may be flushed. The new protocol element will be
+ * added to the context's protocol buffer with appropriate element
+ * headers prepended (sequence number and timestamp). If the data
+ * is continuation data (futurelen == -1), element headers won't
+ * be added. If the protocol element and headers won't fit in
+ * the context's buffer, it is sent directly to the recording
+ * client (after any buffered data).
+ */
+static void
+RecordAProtocolElement(RecordContextPtr pContext, ClientPtr pClient,
+ int category, pointer data, int datalen, int futurelen)
+{
+ CARD32 elemHeaderData[2];
+ int numElemHeaders = 0;
+ Bool recordingClientSwapped = pContext->pRecordingClient->swapped;
+ int n;
+ CARD32 serverTime = 0;
+ Bool gotServerTime = FALSE;
+ int replylen;
+
+ if (futurelen >= 0)
+ { /* start of new protocol element */
+ xRecordEnableContextReply *pRep = (xRecordEnableContextReply *)
+ pContext->replyBuffer;
+ if (pContext->pBufClient != pClient ||
+ pContext->bufCategory != category)
+ {
+ RecordFlushReplyBuffer(pContext, NULL, 0, NULL, 0);
+ pContext->pBufClient = pClient;
+ pContext->bufCategory = category;
+ }
+
+ if (!pContext->numBufBytes)
+ {
+ serverTime = GetTimeInMillis();
+ gotServerTime = TRUE;
+ pRep->type = X_Reply;
+ pRep->category = category;
+ pRep->sequenceNumber = pContext->pRecordingClient->sequence;
+ pRep->length = 0;
+ pRep->elementHeader = pContext->elemHeaders;
+ pRep->serverTime = serverTime;
+ if (pClient)
+ {
+ pRep->clientSwapped =
+ (pClient->swapped != recordingClientSwapped);
+ pRep->idBase = pClient->clientAsMask;
+ pRep->recordedSequenceNumber = pClient->sequence;
+ }
+ else /* it's a device event, StartOfData, or EndOfData */
+ {
+ pRep->clientSwapped = (category != XRecordFromServer) &&
+ recordingClientSwapped;
+ pRep->idBase = 0;
+ pRep->recordedSequenceNumber = 0;
+ }
+
+ if (recordingClientSwapped)
+ {
+ swaps(&pRep->sequenceNumber, n);
+ swapl(&pRep->length, n);
+ swapl(&pRep->idBase, n);
+ swapl(&pRep->serverTime, n);
+ swapl(&pRep->recordedSequenceNumber, n);
+ }
+ pContext->numBufBytes = SIZEOF(xRecordEnableContextReply);
+ }
+
+ /* generate element headers if needed */
+
+ if ( ( (pContext->elemHeaders & XRecordFromClientTime)
+ && category == XRecordFromClient)
+ ||
+ ( (pContext->elemHeaders & XRecordFromServerTime)
+ && category == XRecordFromServer))
+ {
+ if (gotServerTime)
+ elemHeaderData[numElemHeaders] = serverTime;
+ else
+ elemHeaderData[numElemHeaders] = GetTimeInMillis();
+ if (recordingClientSwapped)
+ swapl(&elemHeaderData[numElemHeaders], n);
+ numElemHeaders++;
+ }
+
+ if ( (pContext->elemHeaders & XRecordFromClientSequence)
+ &&
+ (category == XRecordFromClient || category == XRecordClientDied))
+ {
+ elemHeaderData[numElemHeaders] = pClient->sequence;
+ if (recordingClientSwapped)
+ swapl(&elemHeaderData[numElemHeaders], n);
+ numElemHeaders++;
+ }
+
+ /* adjust reply length */
+
+ replylen = pRep->length;
+ if (recordingClientSwapped) swapl(&replylen, n);
+ replylen += numElemHeaders + bytes_to_int32(datalen) +
+ bytes_to_int32(futurelen);
+ if (recordingClientSwapped) swapl(&replylen, n);
+ pRep->length = replylen;
+ } /* end if not continued reply */
+
+ numElemHeaders *= 4;
+
+ /* if space available >= space needed, buffer the data */
+
+ if (REPLY_BUF_SIZE - pContext->numBufBytes >= datalen + numElemHeaders)
+ {
+ if (numElemHeaders)
+ {
+ memcpy(pContext->replyBuffer + pContext->numBufBytes,
+ elemHeaderData, numElemHeaders);
+ pContext->numBufBytes += numElemHeaders;
+ }
+ if (datalen)
+ {
+ memcpy(pContext->replyBuffer + pContext->numBufBytes,
+ data, datalen);
+ pContext->numBufBytes += datalen;
+ }
+ }
+ else
+ RecordFlushReplyBuffer(pContext, (pointer)elemHeaderData,
+ numElemHeaders, (pointer)data, datalen);
+
+} /* RecordAProtocolElement */
+
+
+/* RecordFindClientOnContext
+ *
+ * Arguments:
+ * pContext is the context to search.
+ * clientspec is the resource ID mask identifying the client to search
+ * for, or XRecordFutureClients.
+ * pposition is a pointer to an int, or NULL. See Returns.
+ *
+ * Returns:
+ * The RCAP on which clientspec was found, or NULL if not found on
+ * any RCAP on the given context.
+ * If pposition was not NULL and the returned RCAP is not NULL,
+ * *pposition will be set to the index into the returned the RCAP's
+ * pClientIDs array that holds clientspec.
+ *
+ * Side Effects: none.
+ */
+static RecordClientsAndProtocolPtr
+RecordFindClientOnContext(
+ RecordContextPtr pContext,
+ XID clientspec,
+ int *pposition
+)
+{
+ RecordClientsAndProtocolPtr pRCAP;
+
+ for (pRCAP = pContext->pListOfRCAP; pRCAP; pRCAP = pRCAP->pNextRCAP)
+ {
+ int i;
+ for (i = 0; i < pRCAP->numClients; i++)
+ {
+ if (pRCAP->pClientIDs[i] == clientspec)
+ {
+ if (pposition)
+ *pposition = i;
+ return pRCAP;
+ }
+ }
+ }
+ return NULL;
+} /* RecordFindClientOnContext */
+
+
+/* RecordABigRequest
+ *
+ * Arguments:
+ * pContext is the recording context.
+ * client is the client being recorded.
+ * stuff is a pointer to the big request of client (see the Big Requests
+ * extension for details.)
+ *
+ * Returns: nothing.
+ *
+ * Side Effects:
+ * The big request is recorded with the correct length field re-inserted.
+ *
+ * Note: this function exists mainly to make RecordARequest smaller.
+ */
+static void
+RecordABigRequest(RecordContextPtr pContext, ClientPtr client, xReq *stuff)
+{
+ CARD32 bigLength;
+ char n;
+ int bytesLeft;
+
+ /* note: client->req_len has been frobbed by ReadRequestFromClient
+ * (os/io.c) to discount the extra 4 bytes taken by the extended length
+ * field in a big request. The actual request length to record is
+ * client->req_len + 1 (measured in CARD32s).
+ */
+
+ /* record the request header */
+ bytesLeft = client->req_len << 2;
+ RecordAProtocolElement(pContext, client, XRecordFromClient,
+ (pointer)stuff, SIZEOF(xReq), bytesLeft);
+
+ /* reinsert the extended length field that was squished out */
+ bigLength = client->req_len + bytes_to_int32(sizeof(bigLength));
+ if (client->swapped)
+ swapl(&bigLength, n);
+ RecordAProtocolElement(pContext, client, XRecordFromClient,
+ (pointer)&bigLength, sizeof(bigLength), /* continuation */ -1);
+ bytesLeft -= sizeof(bigLength);
+
+ /* record the rest of the request after the length */
+ RecordAProtocolElement(pContext, client, XRecordFromClient,
+ (pointer)(stuff + 1), bytesLeft, /* continuation */ -1);
+} /* RecordABigRequest */
+
+
+/* RecordARequest
+ *
+ * Arguments:
+ * client is a client that the server has dispatched a request to by
+ * calling client->requestVector[request opcode] .
+ * The request is in client->requestBuffer.
+ *
+ * Returns:
+ * Whatever is returned by the "real" Proc function for this request.
+ * The "real" Proc function is the function that was in
+ * client->requestVector[request opcode] before it was replaced by
+ * RecordARequest. (See the function RecordInstallHooks.)
+ *
+ * Side Effects:
+ * The request is recorded by all contexts that have registered this
+ * request for this client. The real Proc function is called.
+ */
+static int
+RecordARequest(ClientPtr client)
+{
+ RecordContextPtr pContext;
+ RecordClientsAndProtocolPtr pRCAP;
+ int i;
+ RecordClientPrivatePtr pClientPriv;
+ REQUEST(xReq);
+ int majorop;
+
+ majorop = stuff->reqType;
+ for (i = 0; i < numEnabledContexts; i++)
+ {
+ pContext = ppAllContexts[i];
+ pRCAP = RecordFindClientOnContext(pContext, client->clientAsMask,
+ NULL);
+ if (pRCAP && pRCAP->pRequestMajorOpSet &&
+ RecordIsMemberOfSet(pRCAP->pRequestMajorOpSet, majorop))
+ {
+ if (majorop <= 127)
+ { /* core request */
+
+ if (stuff->length == 0)
+ RecordABigRequest(pContext, client, stuff);
+ else
+ RecordAProtocolElement(pContext, client, XRecordFromClient,
+ (pointer)stuff, client->req_len << 2, 0);
+ }
+ else /* extension, check minor opcode */
+ {
+ int minorop = MinorOpcodeOfRequest(client);
+ int numMinOpInfo;
+ RecordMinorOpPtr pMinorOpInfo = pRCAP->pRequestMinOpInfo;
+
+ assert (pMinorOpInfo);
+ numMinOpInfo = pMinorOpInfo->count;
+ pMinorOpInfo++;
+ assert (numMinOpInfo);
+ for ( ; numMinOpInfo; numMinOpInfo--, pMinorOpInfo++)
+ {
+ if (majorop >= pMinorOpInfo->major.first &&
+ majorop <= pMinorOpInfo->major.last &&
+ RecordIsMemberOfSet(pMinorOpInfo->major.pMinOpSet,
+ minorop))
+ {
+ if (stuff->length == 0)
+ RecordABigRequest(pContext, client, stuff);
+ else
+ RecordAProtocolElement(pContext, client,
+ XRecordFromClient, (pointer)stuff,
+ client->req_len << 2, 0);
+ break;
+ }
+ } /* end for each minor op info */
+ } /* end extension request */
+ } /* end this RCAP wants this major opcode */
+ } /* end for each context */
+ pClientPriv = RecordClientPrivate(client);
+ assert(pClientPriv);
+ return (* pClientPriv->originalVector[majorop])(client);
+} /* RecordARequest */
+
+/* RecordAReply
+ *
+ * Arguments:
+ * pcbl is &ReplyCallback.
+ * nulldata is NULL.
+ * calldata is a pointer to a ReplyInfoRec (include/os.h)
+ * which provides information about replies that are being sent
+ * to clients.
+ *
+ * Returns: nothing.
+ *
+ * Side Effects:
+ * The reply is recorded by all contexts that have registered this
+ * reply type for this client. If more data belonging to the same
+ * reply is expected, and if the reply is being recorded by any
+ * context, pContext->continuedReply is set to 1.
+ * If pContext->continuedReply was already 1 and this is the last
+ * chunk of data belonging to this reply, it is set to 0.
+ */
+static void
+RecordAReply(CallbackListPtr *pcbl, pointer nulldata, pointer calldata)
+{
+ RecordContextPtr pContext;
+ RecordClientsAndProtocolPtr pRCAP;
+ int eci;
+ int majorop;
+ ReplyInfoRec *pri = (ReplyInfoRec *)calldata;
+ ClientPtr client = pri->client;
+ REQUEST(xReq);
+
+ majorop = stuff->reqType;
+ for (eci = 0; eci < numEnabledContexts; eci++)
+ {
+ pContext = ppAllContexts[eci];
+ pRCAP = RecordFindClientOnContext(pContext, client->clientAsMask,
+ NULL);
+ if (pRCAP)
+ {
+ if (pContext->continuedReply)
+ {
+ RecordAProtocolElement(pContext, client, XRecordFromServer,
+ (pointer)pri->replyData, pri->dataLenBytes, /* continuation */ -1);
+ if (!pri->bytesRemaining)
+ pContext->continuedReply = 0;
+ }
+ else if (pri->startOfReply && pRCAP->pReplyMajorOpSet &&
+ RecordIsMemberOfSet(pRCAP->pReplyMajorOpSet, majorop))
+ {
+ if (majorop <= 127)
+ { /* core reply */
+ RecordAProtocolElement(pContext, client, XRecordFromServer,
+ (pointer)pri->replyData, pri->dataLenBytes, pri->bytesRemaining);
+ if (pri->bytesRemaining)
+ pContext->continuedReply = 1;
+ }
+ else /* extension, check minor opcode */
+ {
+ int minorop = MinorOpcodeOfRequest(client);
+ int numMinOpInfo;
+ RecordMinorOpPtr pMinorOpInfo = pRCAP->pReplyMinOpInfo;
+ assert (pMinorOpInfo);
+ numMinOpInfo = pMinorOpInfo->count;
+ pMinorOpInfo++;
+ assert (numMinOpInfo);
+ for ( ; numMinOpInfo; numMinOpInfo--, pMinorOpInfo++)
+ {
+ if (majorop >= pMinorOpInfo->major.first &&
+ majorop <= pMinorOpInfo->major.last &&
+ RecordIsMemberOfSet(pMinorOpInfo->major.pMinOpSet,
+ minorop))
+ {
+ RecordAProtocolElement(pContext, client,
+ XRecordFromServer, (pointer)pri->replyData,
+ pri->dataLenBytes, pri->bytesRemaining);
+ if (pri->bytesRemaining)
+ pContext->continuedReply = 1;
+ break;
+ }
+ } /* end for each minor op info */
+ } /* end extension reply */
+ } /* end continued reply vs. start of reply */
+ } /* end client is registered on this context */
+ } /* end for each context */
+} /* RecordAReply */
+
+
+/* RecordADeliveredEventOrError
+ *
+ * Arguments:
+ * pcbl is &EventCallback.
+ * nulldata is NULL.
+ * calldata is a pointer to a EventInfoRec (include/dix.h)
+ * which provides information about events that are being sent
+ * to clients.
+ *
+ * Returns: nothing.
+ *
+ * Side Effects:
+ * The event or error is recorded by all contexts that have registered
+ * it for this client.
+ */
+static void
+RecordADeliveredEventOrError(CallbackListPtr *pcbl, pointer nulldata, pointer calldata)
+{
+ EventInfoRec *pei = (EventInfoRec *)calldata;
+ RecordContextPtr pContext;
+ RecordClientsAndProtocolPtr pRCAP;
+ int eci; /* enabled context index */
+ ClientPtr pClient = pei->client;
+
+ for (eci = 0; eci < numEnabledContexts; eci++)
+ {
+ pContext = ppAllContexts[eci];
+ pRCAP = RecordFindClientOnContext(pContext, pClient->clientAsMask,
+ NULL);
+ if (pRCAP && (pRCAP->pDeliveredEventSet || pRCAP->pErrorSet))
+ {
+ int ev; /* event index */
+ xEvent *pev = pei->events;
+ for (ev = 0; ev < pei->count; ev++, pev++)
+ {
+ int recordit = 0;
+ if (pRCAP->pErrorSet)
+ {
+ recordit = RecordIsMemberOfSet(pRCAP->pErrorSet,
+ ((xError *)(pev))->errorCode);
+ }
+ else if (pRCAP->pDeliveredEventSet)
+ {
+ recordit = RecordIsMemberOfSet(pRCAP->pDeliveredEventSet,
+ pev->u.u.type & 0177);
+ }
+ if (recordit)
+ {
+ xEvent swappedEvent;
+ xEvent *pEvToRecord = pev;
+
+ if (pClient->swapped)
+ {
+ (*EventSwapVector[pev->u.u.type & 0177])
+ (pev, &swappedEvent);
+ pEvToRecord = &swappedEvent;
+
+ }
+ RecordAProtocolElement(pContext, pClient,
+ XRecordFromServer, pEvToRecord, SIZEOF(xEvent), 0);
+ }
+ } /* end for each event */
+ } /* end this client is on this context */
+ } /* end for each enabled context */
+} /* RecordADeliveredEventOrError */
+
+
+static void
+RecordSendProtocolEvents(RecordClientsAndProtocolPtr pRCAP,
+ RecordContextPtr pContext,
+ xEvent* pev, int count)
+{
+ int ev; /* event index */
+
+ for (ev = 0; ev < count; ev++, pev++)
+ {
+ if (RecordIsMemberOfSet(pRCAP->pDeviceEventSet,
+ pev->u.u.type & 0177))
+ {
+ xEvent swappedEvent;
+ xEvent *pEvToRecord = pev;
+#ifdef PANORAMIX
+ xEvent shiftedEvent;
+
+ if (!noPanoramiXExtension &&
+ (pev->u.u.type == MotionNotify ||
+ pev->u.u.type == ButtonPress ||
+ pev->u.u.type == ButtonRelease ||
+ pev->u.u.type == KeyPress ||
+ pev->u.u.type == KeyRelease)) {
+ int scr = XineramaGetCursorScreen(inputInfo.pointer);
+ memcpy(&shiftedEvent, pev, sizeof(xEvent));
+ shiftedEvent.u.keyButtonPointer.rootX +=
+ panoramiXdataPtr[scr].x -
+ panoramiXdataPtr[0].x;
+ shiftedEvent.u.keyButtonPointer.rootY +=
+ panoramiXdataPtr[scr].y -
+ panoramiXdataPtr[0].y;
+ pEvToRecord = &shiftedEvent;
+ }
+#endif /* PANORAMIX */
+
+ if (pContext->pRecordingClient->swapped)
+ {
+ (*EventSwapVector[pEvToRecord->u.u.type & 0177])
+ (pEvToRecord, &swappedEvent);
+ pEvToRecord = &swappedEvent;
+ }
+
+ RecordAProtocolElement(pContext, NULL,
+ XRecordFromServer, pEvToRecord, SIZEOF(xEvent), 0);
+ /* make sure device events get flushed in the absence
+ * of other client activity
+ */
+ SetCriticalOutputPending();
+ }
+ } /* end for each event */
+
+} /* RecordADeviceEvent */
+
+/* RecordADeviceEvent
+ *
+ * Arguments:
+ * pcbl is &DeviceEventCallback.
+ * nulldata is NULL.
+ * calldata is a pointer to a DeviceEventInfoRec (include/dix.h)
+ * which provides information about device events that occur.
+ *
+ * Returns: nothing.
+ *
+ * Side Effects:
+ * The device event is recorded by all contexts that have registered
+ * it for this client.
+ */
+static void
+RecordADeviceEvent(CallbackListPtr *pcbl, pointer nulldata, pointer calldata)
+{
+ DeviceEventInfoRec *pei = (DeviceEventInfoRec *)calldata;
+ RecordContextPtr pContext;
+ RecordClientsAndProtocolPtr pRCAP;
+ int eci; /* enabled context index */
+
+ for (eci = 0; eci < numEnabledContexts; eci++)
+ {
+ pContext = ppAllContexts[eci];
+ for (pRCAP = pContext->pListOfRCAP; pRCAP; pRCAP = pRCAP->pNextRCAP)
+ {
+ if (pRCAP->pDeviceEventSet)
+ {
+ int count;
+ xEvent *xi_events = NULL;
+
+ /* TODO check return values */
+ if (IsMaster(pei->device))
+ {
+ xEvent xE;
+ EventToCore(pei->event, &xE);
+ RecordSendProtocolEvents(pRCAP, pContext, &xE, 1);
+ }
+
+ EventToXI(pei->event, &xi_events, &count);
+ RecordSendProtocolEvents(pRCAP, pContext, xi_events, count);
+ free(xi_events);
+ } /* end this RCAP selects device events */
+ } /* end for each RCAP on this context */
+ } /* end for each enabled context */
+}
+
+
+/* RecordFlushAllContexts
+ *
+ * Arguments:
+ * pcbl is &FlushCallback.
+ * nulldata and calldata are NULL.
+ *
+ * Returns: nothing.
+ *
+ * Side Effects:
+ * All buffered reply data of all enabled contexts is written to
+ * the recording clients.
+ */
+static void
+RecordFlushAllContexts(
+ CallbackListPtr *pcbl,
+ pointer nulldata,
+ pointer calldata
+)
+{
+ int eci; /* enabled context index */
+ RecordContextPtr pContext;
+
+ for (eci = 0; eci < numEnabledContexts; eci++)
+ {
+ pContext = ppAllContexts[eci];
+
+ /* In most cases we leave it to RecordFlushReplyBuffer to make
+ * this check, but this function could be called very often, so we
+ * check before calling hoping to save the function call cost
+ * most of the time.
+ */
+ if (pContext->numBufBytes)
+ RecordFlushReplyBuffer(ppAllContexts[eci], NULL, 0, NULL, 0);
+ }
+} /* RecordFlushAllContexts */
+
+
+/* RecordInstallHooks
+ *
+ * Arguments:
+ * pRCAP is an RCAP on an enabled or being-enabled context.
+ * oneclient can be zero or the resource ID mask identifying a client.
+ *
+ * Returns: BadAlloc if a memory allocation error occurred, else Success.
+ *
+ * Side Effects:
+ * Recording hooks needed by RCAP are installed.
+ * If oneclient is zero, recording hooks needed for all clients and
+ * protocol on the RCAP are installed. If oneclient is non-zero,
+ * only those hooks needed for the specified client are installed.
+ *
+ * Client requestVectors may be altered. numEnabledRCAPs will be
+ * incremented if oneclient == 0. Callbacks may be added to
+ * various callback lists.
+ */
+static int
+RecordInstallHooks(RecordClientsAndProtocolPtr pRCAP, XID oneclient)
+{
+ int i = 0;
+ XID client;
+
+ if (oneclient)
+ client = oneclient;
+ else
+ client = pRCAP->numClients ? pRCAP->pClientIDs[i++] : 0;
+
+ while (client)
+ {
+ if (client != XRecordFutureClients)
+ {
+ if (pRCAP->pRequestMajorOpSet)
+ {
+ RecordSetIteratePtr pIter = NULL;
+ RecordSetInterval interval;
+ ClientPtr pClient = clients[CLIENT_ID(client)];
+
+ if (pClient && !RecordClientPrivate(pClient))
+ {
+ RecordClientPrivatePtr pClientPriv;
+ /* no Record proc vector; allocate one */
+ pClientPriv = (RecordClientPrivatePtr)
+ malloc(sizeof(RecordClientPrivateRec));
+ if (!pClientPriv)
+ return BadAlloc;
+ /* copy old proc vector to new */
+ memcpy(pClientPriv->recordVector, pClient->requestVector,
+ sizeof (pClientPriv->recordVector));
+ pClientPriv->originalVector = pClient->requestVector;
+ dixSetPrivate(&pClient->devPrivates,
+ RecordClientPrivateKey, pClientPriv);
+ pClient->requestVector = pClientPriv->recordVector;
+ }
+ while ((pIter = RecordIterateSet(pRCAP->pRequestMajorOpSet,
+ pIter, &interval)))
+ {
+ unsigned int j;
+ for (j = interval.first; j <= interval.last; j++)
+ pClient->requestVector[j] = RecordARequest;
+ }
+ }
+ }
+ if (oneclient)
+ client = 0;
+ else
+ client = (i < pRCAP->numClients) ? pRCAP->pClientIDs[i++] : 0;
+ }
+
+ assert(numEnabledRCAPs >= 0);
+ if (!oneclient && ++numEnabledRCAPs == 1)
+ { /* we're enabling the first context */
+ if (!AddCallback(&EventCallback, RecordADeliveredEventOrError, NULL))
+ return BadAlloc;
+ if (!AddCallback(&DeviceEventCallback, RecordADeviceEvent, NULL))
+ return BadAlloc;
+ if (!AddCallback(&ReplyCallback, RecordAReply, NULL))
+ return BadAlloc;
+ if (!AddCallback(&FlushCallback, RecordFlushAllContexts, NULL))
+ return BadAlloc;
+ /* Alternate context flushing scheme: delete the line above
+ * and call RegisterBlockAndWakeupHandlers here passing
+ * RecordFlushAllContexts. Is this any better?
+ */
+ }
+ return Success;
+} /* RecordInstallHooks */
+
+
+/* RecordUninstallHooks
+ *
+ * Arguments:
+ * pRCAP is an RCAP on an enabled or being-disabled context.
+ * oneclient can be zero or the resource ID mask identifying a client.
+ *
+ * Returns: nothing.
+ *
+ * Side Effects:
+ * Recording hooks needed by RCAP may be uninstalled.
+ * If oneclient is zero, recording hooks needed for all clients and
+ * protocol on the RCAP may be uninstalled. If oneclient is non-zero,
+ * only those hooks needed for the specified client may be uninstalled.
+ *
+ * Client requestVectors may be altered. numEnabledRCAPs will be
+ * decremented if oneclient == 0. Callbacks may be deleted from
+ * various callback lists.
+ */
+static void
+RecordUninstallHooks(RecordClientsAndProtocolPtr pRCAP, XID oneclient)
+{
+ int i = 0;
+ XID client;
+
+ if (oneclient)
+ client = oneclient;
+ else
+ client = pRCAP->numClients ? pRCAP->pClientIDs[i++] : 0;
+
+ while (client)
+ {
+ if (client != XRecordFutureClients)
+ {
+ if (pRCAP->pRequestMajorOpSet)
+ {
+ ClientPtr pClient = clients[CLIENT_ID(client)];
+ int c;
+ Bool otherRCAPwantsProcVector = FALSE;
+ RecordClientPrivatePtr pClientPriv =
+ RecordClientPrivate(pClient);
+
+ assert (pClient && RecordClientPrivate(pClient));
+ memcpy(pClientPriv->recordVector, pClientPriv->originalVector,
+ sizeof (pClientPriv->recordVector));
+
+ for (c = 0; c < numEnabledContexts; c++)
+ {
+ RecordClientsAndProtocolPtr pOtherRCAP;
+ RecordContextPtr pContext = ppAllContexts[c];
+
+ if (pContext == pRCAP->pContext) continue;
+ pOtherRCAP = RecordFindClientOnContext(pContext, client,
+ NULL);
+ if (pOtherRCAP && pOtherRCAP->pRequestMajorOpSet)
+ {
+ RecordSetIteratePtr pIter = NULL;
+ RecordSetInterval interval;
+
+ otherRCAPwantsProcVector = TRUE;
+ while ((pIter = RecordIterateSet(
+ pOtherRCAP->pRequestMajorOpSet,
+ pIter, &interval)))
+ {
+ unsigned int j;
+ for (j = interval.first; j <= interval.last; j++)
+ pClient->requestVector[j] = RecordARequest;
+ }
+ }
+ }
+ if (!otherRCAPwantsProcVector)
+ { /* nobody needs it, so free it */
+ pClient->requestVector = pClientPriv->originalVector;
+ dixSetPrivate(&pClient->devPrivates,
+ RecordClientPrivateKey, NULL);
+ free(pClientPriv);
+ }
+ } /* end if this RCAP specifies any requests */
+ } /* end if not future clients */
+ if (oneclient)
+ client = 0;
+ else
+ client = (i < pRCAP->numClients) ? pRCAP->pClientIDs[i++] : 0;
+ }
+
+ assert(numEnabledRCAPs >= 1);
+ if (!oneclient && --numEnabledRCAPs == 0)
+ { /* we're disabling the last context */
+ DeleteCallback(&EventCallback, RecordADeliveredEventOrError, NULL);
+ DeleteCallback(&DeviceEventCallback, RecordADeviceEvent, NULL);
+ DeleteCallback(&ReplyCallback, RecordAReply, NULL);
+ DeleteCallback(&FlushCallback, RecordFlushAllContexts, NULL);
+ /* Alternate context flushing scheme: delete the line above
+ * and call RemoveBlockAndWakeupHandlers here passing
+ * RecordFlushAllContexts. Is this any better?
+ */
+ /* Having deleted the callback, call it one last time. -gildea */
+ RecordFlushAllContexts(&FlushCallback, NULL, NULL);
+ }
+} /* RecordUninstallHooks */
+
+
+/* RecordDeleteClientFromRCAP
+ *
+ * Arguments:
+ * pRCAP is an RCAP to delete the client from.
+ * position is the index into the array pRCAP->pClientIDs of the
+ * client to delete.
+ *
+ * Returns: nothing.
+ *
+ * Side Effects:
+ * Recording hooks needed by client will be uninstalled if the context
+ * is enabled. The designated client will be removed from the
+ * pRCAP->pClientIDs array. If it was the only client on the RCAP,
+ * the RCAP is removed from the context and freed. (Invariant: RCAPs
+ * have at least one client.)
+ */
+static void
+RecordDeleteClientFromRCAP(RecordClientsAndProtocolPtr pRCAP, int position)
+{
+ if (pRCAP->pContext->pRecordingClient)
+ RecordUninstallHooks(pRCAP, pRCAP->pClientIDs[position]);
+ if (position != pRCAP->numClients - 1)
+ pRCAP->pClientIDs[position] = pRCAP->pClientIDs[pRCAP->numClients - 1];
+ if (--pRCAP->numClients == 0)
+ { /* no more clients; remove RCAP from context's list */
+ RecordContextPtr pContext = pRCAP->pContext;
+ if (pContext->pRecordingClient)
+ RecordUninstallHooks(pRCAP, 0);
+ if (pContext->pListOfRCAP == pRCAP)
+ pContext->pListOfRCAP = pRCAP->pNextRCAP;
+ else
+ {
+ RecordClientsAndProtocolPtr prevRCAP;
+ for (prevRCAP = pContext->pListOfRCAP;
+ prevRCAP->pNextRCAP != pRCAP;
+ prevRCAP = prevRCAP->pNextRCAP)
+ ;
+ prevRCAP->pNextRCAP = pRCAP->pNextRCAP;
+ }
+ /* free the RCAP */
+ if (pRCAP->clientIDsSeparatelyAllocated)
+ free(pRCAP->pClientIDs);
+ free(pRCAP);
+ }
+} /* RecordDeleteClientFromRCAP */
+
+
+/* RecordAddClientToRCAP
+ *
+ * Arguments:
+ * pRCAP is an RCAP to add the client to.
+ * clientspec is the resource ID mask identifying a client, or
+ * XRecordFutureClients.
+ *
+ * Returns: nothing.
+ *
+ * Side Effects:
+ * Recording hooks needed by client will be installed if the context
+ * is enabled. The designated client will be added to the
+ * pRCAP->pClientIDs array, which may be realloced.
+ * pRCAP->clientIDsSeparatelyAllocated may be set to 1 if there
+ * is no more room to hold clients internal to the RCAP.
+ */
+static void
+RecordAddClientToRCAP(RecordClientsAndProtocolPtr pRCAP, XID clientspec)
+{
+ if (pRCAP->numClients == pRCAP->sizeClients)
+ {
+ if (pRCAP->clientIDsSeparatelyAllocated)
+ {
+ XID *pNewIDs = (XID *)realloc(pRCAP->pClientIDs,
+ (pRCAP->sizeClients + CLIENT_ARRAY_GROWTH_INCREMENT) *
+ sizeof(XID));
+ if (!pNewIDs)
+ return;
+ pRCAP->pClientIDs = pNewIDs;
+ pRCAP->sizeClients += CLIENT_ARRAY_GROWTH_INCREMENT;
+ }
+ else
+ {
+ XID *pNewIDs = (XID *)malloc((pRCAP->sizeClients +
+ CLIENT_ARRAY_GROWTH_INCREMENT) * sizeof(XID));
+ if (!pNewIDs)
+ return;
+ memcpy(pNewIDs, pRCAP->pClientIDs, pRCAP->numClients *sizeof(XID));
+ pRCAP->pClientIDs = pNewIDs;
+ pRCAP->sizeClients += CLIENT_ARRAY_GROWTH_INCREMENT;
+ pRCAP->clientIDsSeparatelyAllocated = 1;
+ }
+ }
+ pRCAP->pClientIDs[pRCAP->numClients++] = clientspec;
+ if (pRCAP->pContext->pRecordingClient)
+ RecordInstallHooks(pRCAP, clientspec);
+} /* RecordDeleteClientFromRCAP */
+
+
+/* RecordDeleteClientFromContext
+ *
+ * Arguments:
+ * pContext is the context to delete from.
+ * clientspec is the resource ID mask identifying a client, or
+ * XRecordFutureClients.
+ *
+ * Returns: nothing.
+ *
+ * Side Effects:
+ * If clientspec is on any RCAP of the context, it is deleted from that
+ * RCAP. (A given clientspec can only be on one RCAP of a context.)
+ */
+static void
+RecordDeleteClientFromContext(RecordContextPtr pContext, XID clientspec)
+{
+ RecordClientsAndProtocolPtr pRCAP;
+ int position;
+
+ if ((pRCAP = RecordFindClientOnContext(pContext, clientspec, &position)))
+ RecordDeleteClientFromRCAP(pRCAP, position);
+} /* RecordDeleteClientFromContext */
+
+
+/* RecordSanityCheckClientSpecifiers
+ *
+ * Arguments:
+ * clientspecs is an array of alleged CLIENTSPECs passed by the client.
+ * nspecs is the number of elements in clientspecs.
+ * errorspec, if non-zero, is the resource id base of a client that
+ * must not appear in clienspecs.
+ *
+ * Returns: BadMatch if any of the clientspecs are invalid, else Success.
+ *
+ * Side Effects: none.
+ */
+static int
+RecordSanityCheckClientSpecifiers(ClientPtr client, XID *clientspecs, int nspecs, XID errorspec)
+{
+ int i;
+ int clientIndex;
+ int rc;
+ pointer value;
+
+ for (i = 0; i < nspecs; i++)
+ {
+ if (clientspecs[i] == XRecordCurrentClients ||
+ clientspecs[i] == XRecordFutureClients ||
+ clientspecs[i] == XRecordAllClients)
+ continue;
+ if (errorspec && (CLIENT_BITS(clientspecs[i]) == errorspec) )
+ return BadMatch;
+ clientIndex = CLIENT_ID(clientspecs[i]);
+ if (clientIndex && clients[clientIndex] &&
+ clients[clientIndex]->clientState == ClientStateRunning)
+ {
+ if (clientspecs[i] == clients[clientIndex]->clientAsMask)
+ continue;
+ rc = dixLookupResourceByClass(&value, clientspecs[i], RC_ANY,
+ client, DixGetAttrAccess);
+ if (rc != Success)
+ return rc;
+ }
+ else
+ return BadMatch;
+ }
+ return Success;
+} /* RecordSanityCheckClientSpecifiers */
+
+
+/* RecordCanonicalizeClientSpecifiers
+ *
+ * Arguments:
+ * pClientspecs is an array of CLIENTSPECs that have been sanity
+ * checked.
+ * pNumClientspecs is a pointer to the number of elements in pClientspecs.
+ * excludespec, if non-zero, is the resource id base of a client that
+ * should not be included in the expansion of XRecordAllClients or
+ * XRecordCurrentClients.
+ *
+ * Returns:
+ * A pointer to an array of CLIENTSPECs that is the same as the
+ * passed array with the following modifications:
+ * - all but the client id bits of resource IDs are stripped off.
+ * - duplicates removed.
+ * - XRecordAllClients expanded to a list of all currently connected
+ * clients + XRecordFutureClients - excludespec (if non-zero)
+ * - XRecordCurrentClients expanded to a list of all currently
+ * connected clients - excludespec (if non-zero)
+ * The returned array may be the passed array modified in place, or
+ * it may be an malloc'ed array. The caller should keep a pointer to the
+ * original array and free the returned array if it is different.
+ *
+ * *pNumClientspecs is set to the number of elements in the returned
+ * array.
+ *
+ * Side Effects:
+ * pClientspecs may be modified in place.
+ */
+static XID *
+RecordCanonicalizeClientSpecifiers(XID *pClientspecs, int *pNumClientspecs, XID excludespec)
+{
+ int i;
+ int numClients = *pNumClientspecs;
+
+ /* first pass strips off the resource index bits, leaving just the
+ * client id bits. This makes searching for a particular client simpler
+ * (and faster.)
+ */
+ for (i = 0; i < numClients; i++)
+ {
+ XID cs = pClientspecs[i];
+ if (cs > XRecordAllClients)
+ pClientspecs[i] = CLIENT_BITS(cs);
+ }
+
+ for (i = 0; i < numClients; i++)
+ {
+ if (pClientspecs[i] == XRecordAllClients ||
+ pClientspecs[i] == XRecordCurrentClients)
+ { /* expand All/Current */
+ int j, nc;
+ XID *pCanon = (XID *)malloc(sizeof(XID) * (currentMaxClients + 1));
+ if (!pCanon) return NULL;
+ for (nc = 0, j = 1; j < currentMaxClients; j++)
+ {
+ ClientPtr client = clients[j];
+ if (client != NullClient &&
+ client->clientState == ClientStateRunning &&
+ client->clientAsMask != excludespec)
+ {
+ pCanon[nc++] = client->clientAsMask;
+ }
+ }
+ if (pClientspecs[i] == XRecordAllClients)
+ pCanon[nc++] = XRecordFutureClients;
+ *pNumClientspecs = nc;
+ return pCanon;
+ }
+ else /* not All or Current */
+ {
+ int j;
+ for (j = i + 1; j < numClients; )
+ {
+ if (pClientspecs[i] == pClientspecs[j])
+ {
+ pClientspecs[j] = pClientspecs[--numClients];
+ }
+ else
+ j++;
+ }
+ }
+ } /* end for each clientspec */
+ *pNumClientspecs = numClients;
+ return pClientspecs;
+} /* RecordCanonicalizeClientSpecifiers */
+
+
+/****************************************************************************/
+
+/* stuff for RegisterClients */
+
+/* RecordPadAlign
+ *
+ * Arguments:
+ * size is the number of bytes taken by an object.
+ * align is a byte boundary (e.g. 4, 8)
+ *
+ * Returns:
+ * the number of pad bytes to add at the end of an object of the
+ * given size so that an object placed immediately behind it will
+ * begin on an <align>-byte boundary.
+ *
+ * Side Effects: none.
+ */
+static int
+RecordPadAlign(int size, int align)
+{
+ return (align - (size & (align - 1))) & (align - 1);
+} /* RecordPadAlign */
+
+
+/* RecordSanityCheckRegisterClients
+ *
+ * Arguments:
+ * pContext is the context being registered on.
+ * client is the client that issued a RecordCreateContext or
+ * RecordRegisterClients request.
+ * stuff is a pointer to the request.
+ *
+ * Returns:
+ * Any one of several possible error values if any of the request
+ * arguments are invalid. Success if everything is OK.
+ *
+ * Side Effects: none.
+ */
+static int
+RecordSanityCheckRegisterClients(RecordContextPtr pContext, ClientPtr client, xRecordRegisterClientsReq *stuff)
+{
+ int err;
+ xRecordRange *pRange;
+ int i;
+ XID recordingClient;
+
+ if (((client->req_len << 2) - SIZEOF(xRecordRegisterClientsReq)) !=
+ 4 * stuff->nClients + SIZEOF(xRecordRange) * stuff->nRanges)
+ return BadLength;
+
+ if (stuff->elementHeader &
+ ~(XRecordFromClientSequence|XRecordFromClientTime|XRecordFromServerTime))
+ {
+ client->errorValue = stuff->elementHeader;
+ return BadValue;
+ }
+
+ recordingClient = pContext->pRecordingClient ?
+ pContext->pRecordingClient->clientAsMask : 0;
+ err = RecordSanityCheckClientSpecifiers(client, (XID *)&stuff[1],
+ stuff->nClients, recordingClient);
+ if (err != Success) return err;
+
+ pRange = (xRecordRange *)(((XID *)&stuff[1]) + stuff->nClients);
+ for (i = 0; i < stuff->nRanges; i++, pRange++)
+ {
+ if (pRange->coreRequestsFirst > pRange->coreRequestsLast)
+ {
+ client->errorValue = pRange->coreRequestsFirst;
+ return BadValue;
+ }
+ if (pRange->coreRepliesFirst > pRange->coreRepliesLast)
+ {
+ client->errorValue = pRange->coreRepliesFirst;
+ return BadValue;
+ }
+ if ((pRange->extRequestsMajorFirst || pRange->extRequestsMajorLast) &&
+ (pRange->extRequestsMajorFirst < 128 ||
+ pRange->extRequestsMajorLast < 128 ||
+ pRange->extRequestsMajorFirst > pRange->extRequestsMajorLast))
+ {
+ client->errorValue = pRange->extRequestsMajorFirst;
+ return BadValue;
+ }
+ if (pRange->extRequestsMinorFirst > pRange->extRequestsMinorLast)
+ {
+ client->errorValue = pRange->extRequestsMinorFirst;
+ return BadValue;
+ }
+ if ((pRange->extRepliesMajorFirst || pRange->extRepliesMajorLast) &&
+ (pRange->extRepliesMajorFirst < 128 ||
+ pRange->extRepliesMajorLast < 128 ||
+ pRange->extRepliesMajorFirst > pRange->extRepliesMajorLast))
+ {
+ client->errorValue = pRange->extRepliesMajorFirst;
+ return BadValue;
+ }
+ if (pRange->extRepliesMinorFirst > pRange->extRepliesMinorLast)
+ {
+ client->errorValue = pRange->extRepliesMinorFirst;
+ return BadValue;
+ }
+ if ((pRange->deliveredEventsFirst || pRange->deliveredEventsLast) &&
+ (pRange->deliveredEventsFirst < 2 ||
+ pRange->deliveredEventsLast < 2 ||
+ pRange->deliveredEventsFirst > pRange->deliveredEventsLast))
+ {
+ client->errorValue = pRange->deliveredEventsFirst;
+ return BadValue;
+ }
+ if ((pRange->deviceEventsFirst || pRange->deviceEventsLast) &&
+ (pRange->deviceEventsFirst < 2 ||
+ pRange->deviceEventsLast < 2 ||
+ pRange->deviceEventsFirst > pRange->deviceEventsLast))
+ {
+ client->errorValue = pRange->deviceEventsFirst;
+ return BadValue;
+ }
+ if (pRange->errorsFirst > pRange->errorsLast)
+ {
+ client->errorValue = pRange->errorsFirst;
+ return BadValue;
+ }
+ if (pRange->clientStarted != xFalse && pRange->clientStarted != xTrue)
+ {
+ client->errorValue = pRange->clientStarted;
+ return BadValue;
+ }
+ if (pRange->clientDied != xFalse && pRange->clientDied != xTrue)
+ {
+ client->errorValue = pRange->clientDied;
+ return BadValue;
+ }
+ } /* end for each range */
+ return Success;
+} /* end RecordSanityCheckRegisterClients */
+
+/* This is a tactical structure used to gather information about all the sets
+ * (RecordSetPtr) that need to be created for an RCAP in the process of
+ * digesting a list of RECORDRANGEs (converting it to the internal
+ * representation).
+ */
+typedef struct
+{
+ int nintervals; /* number of intervals in following array */
+ RecordSetInterval *intervals; /* array of intervals for this set */
+ int size; /* size of intevals array; >= nintervals */
+ int align; /* alignment restriction for set */
+ int offset; /* where to store set pointer rel. to start of RCAP */
+ short first, last; /* if for extension, major opcode interval */
+} SetInfoRec, *SetInfoPtr;
+
+/* These constant are used to index into an array of SetInfoRec. */
+enum {REQ, /* set info for requests */
+ REP, /* set info for replies */
+ ERR, /* set info for errors */
+ DEV, /* set info for device events */
+ DLEV, /* set info for delivered events */
+ PREDEFSETS}; /* number of predefined array entries */
+
+
+/* RecordAllocIntervals
+ *
+ * Arguments:
+ * psi is a pointer to a SetInfoRec whose intervals pointer is NULL.
+ * nIntervals is the desired size of the intervals array.
+ *
+ * Returns: BadAlloc if a memory allocation error occurred, else Success.
+ *
+ * Side Effects:
+ * If Success is returned, psi->intervals is a pointer to size
+ * RecordSetIntervals, all zeroed, and psi->size is set to size.
+ */
+static int
+RecordAllocIntervals(SetInfoPtr psi, int nIntervals)
+{
+ assert(!psi->intervals);
+ psi->intervals = (RecordSetInterval *)
+ malloc(nIntervals * sizeof(RecordSetInterval));
+ if (!psi->intervals)
+ return BadAlloc;
+ bzero(psi->intervals, nIntervals * sizeof(RecordSetInterval));
+ psi->size = nIntervals;
+ return Success;
+} /* end RecordAllocIntervals */
+
+
+/* RecordConvertRangesToIntervals
+ *
+ * Arguments:
+ * psi is a pointer to the SetInfoRec we are building.
+ * pRanges is an array of xRecordRanges.
+ * nRanges is the number of elements in pRanges.
+ * byteoffset is the offset from the start of an xRecordRange of the
+ * two bytes (1 for first, 1 for last) we are interested in.
+ * pExtSetInfo, if non-NULL, indicates that the two bytes mentioned
+ * above are followed by four bytes (2 for first, 2 for last)
+ * representing a minor opcode range, and this information should be
+ * stored in one of the SetInfoRecs starting at pExtSetInfo.
+ * pnExtSetInfo is the number of elements in the pExtSetInfo array.
+ *
+ * Returns: BadAlloc if a memory allocation error occurred, else Success.
+ *
+ * Side Effects:
+ * The slice of pRanges indicated by byteoffset is stored in psi.
+ * If pExtSetInfo is non-NULL, minor opcode intervals are stored
+ * in an existing SetInfoRec if the major opcode interval matches, else
+ * they are stored in a new SetInfoRec, and *pnExtSetInfo is
+ * increased accordingly.
+ */
+static int
+RecordConvertRangesToIntervals(
+ SetInfoPtr psi,
+ xRecordRange *pRanges,
+ int nRanges,
+ int byteoffset,
+ SetInfoPtr pExtSetInfo,
+ int *pnExtSetInfo
+)
+{
+ int i;
+ CARD8 *pCARD8;
+ int first, last;
+ int err;
+
+ for (i = 0; i < nRanges; i++, pRanges++)
+ {
+ pCARD8 = ((CARD8 *)pRanges) + byteoffset;
+ first = pCARD8[0];
+ last = pCARD8[1];
+ if (first || last)
+ {
+ if (!psi->intervals)
+ {
+ err = RecordAllocIntervals(psi, 2 * (nRanges - i));
+ if (err != Success)
+ return err;
+ }
+ psi->intervals[psi->nintervals].first = first;
+ psi->intervals[psi->nintervals].last = last;
+ psi->nintervals++;
+ assert(psi->nintervals <= psi->size);
+ if (pExtSetInfo)
+ {
+ SetInfoPtr pesi = pExtSetInfo;
+ CARD16 *pCARD16 = (CARD16 *)(pCARD8 + 2);
+ int j;
+
+ for (j = 0; j < *pnExtSetInfo; j++, pesi++)
+ {
+ if ( (first == pesi->first) && (last == pesi->last) )
+ break;
+ }
+ if (j == *pnExtSetInfo)
+ {
+ err = RecordAllocIntervals(pesi, 2 * (nRanges - i));
+ if (err != Success)
+ return err;
+ pesi->first = first;
+ pesi->last = last;
+ (*pnExtSetInfo)++;
+ }
+ pesi->intervals[pesi->nintervals].first = pCARD16[0];
+ pesi->intervals[pesi->nintervals].last = pCARD16[1];
+ pesi->nintervals++;
+ assert(pesi->nintervals <= pesi->size);
+ }
+ }
+ }
+ return Success;
+} /* end RecordConvertRangesToIntervals */
+
+#define offset_of(_structure, _field) \
+ ((char *)(& (_structure . _field)) - (char *)(&_structure))
+
+/* RecordRegisterClients
+ *
+ * Arguments:
+ * pContext is the context on which to register the clients.
+ * client is the client that issued the RecordCreateContext or
+ * RecordRegisterClients request.
+ * stuff is a pointer to the request.
+ *
+ * Returns:
+ * Any one of several possible error values defined by the protocol.
+ * Success if everything is OK.
+ *
+ * Side Effects:
+ * If different element headers are specified, the context is flushed.
+ * If any of the specified clients are already registered on the
+ * context, they are first unregistered. A new RCAP is created to
+ * hold the specified protocol and clients, and it is linked onto the
+ * context. If the context is enabled, appropriate hooks are installed
+ * to record the new clients and protocol.
+ */
+static int
+RecordRegisterClients(RecordContextPtr pContext, ClientPtr client, xRecordRegisterClientsReq *stuff)
+{
+ int err;
+ int i;
+ SetInfoPtr si;
+ int maxSets;
+ int nExtReqSets = 0;
+ int nExtRepSets = 0;
+ int extReqSetsOffset = 0;
+ int extRepSetsOffset = 0;
+ SetInfoPtr pExtReqSets, pExtRepSets;
+ int clientListOffset;
+ XID *pCanonClients;
+ int clientStarted = 0, clientDied = 0;
+ xRecordRange *pRanges, rr;
+ int nClients;
+ int sizeClients;
+ int totRCAPsize;
+ RecordClientsAndProtocolPtr pRCAP;
+ int pad;
+ XID recordingClient;
+
+ /* do all sanity checking up front */
+
+ err = RecordSanityCheckRegisterClients(pContext, client, stuff);
+ if (err != Success)
+ return err;
+
+ /* if element headers changed, flush buffer */
+
+ if (pContext->elemHeaders != stuff->elementHeader)
+ {
+ RecordFlushReplyBuffer(pContext, NULL, 0, NULL, 0);
+ pContext->elemHeaders = stuff->elementHeader;
+ }
+
+ nClients = stuff->nClients;
+ if (!nClients)
+ /* if empty clients list, we're done. */
+ return Success;
+
+ recordingClient = pContext->pRecordingClient ?
+ pContext->pRecordingClient->clientAsMask : 0;
+ pCanonClients = RecordCanonicalizeClientSpecifiers((XID *)&stuff[1],
+ &nClients, recordingClient);
+ if (!pCanonClients)
+ return BadAlloc;
+
+ /* We may have to create as many as one set for each "predefined"
+ * protocol types, plus one per range for extension reuests, plus one per
+ * range for extension replies.
+ */
+ maxSets = PREDEFSETS + 2 * stuff->nRanges;
+ si = (SetInfoPtr)malloc(sizeof(SetInfoRec) * maxSets);
+ if (!si)
+ {
+ err = BadAlloc;
+ goto bailout;
+ }
+ bzero(si, sizeof(SetInfoRec) * maxSets);
+
+ /* theoretically you must do this because NULL may not be all-bits-zero */
+ for (i = 0; i < maxSets; i++)
+ si[i].intervals = NULL;
+
+ pExtReqSets = si + PREDEFSETS;
+ pExtRepSets = pExtReqSets + stuff->nRanges;
+
+ pRanges = (xRecordRange *)(((XID *)&stuff[1]) + stuff->nClients);
+
+ err = RecordConvertRangesToIntervals(&si[REQ], pRanges, stuff->nRanges,
+ offset_of(rr, coreRequestsFirst), NULL, NULL);
+ if (err != Success) goto bailout;
+
+ err = RecordConvertRangesToIntervals(&si[REQ], pRanges, stuff->nRanges,
+ offset_of(rr, extRequestsMajorFirst), pExtReqSets, &nExtReqSets);
+ if (err != Success) goto bailout;
+
+ err = RecordConvertRangesToIntervals(&si[REP], pRanges, stuff->nRanges,
+ offset_of(rr, coreRepliesFirst), NULL, NULL);
+ if (err != Success) goto bailout;
+
+ err = RecordConvertRangesToIntervals(&si[REP], pRanges, stuff->nRanges,
+ offset_of(rr, extRepliesMajorFirst), pExtRepSets, &nExtRepSets);
+ if (err != Success) goto bailout;
+
+ err = RecordConvertRangesToIntervals(&si[ERR], pRanges, stuff->nRanges,
+ offset_of(rr, errorsFirst), NULL, NULL);
+ if (err != Success) goto bailout;
+
+ err = RecordConvertRangesToIntervals(&si[DLEV], pRanges, stuff->nRanges,
+ offset_of(rr, deliveredEventsFirst), NULL, NULL);
+ if (err != Success) goto bailout;
+
+ err = RecordConvertRangesToIntervals(&si[DEV], pRanges, stuff->nRanges,
+ offset_of(rr, deviceEventsFirst), NULL, NULL);
+ if (err != Success) goto bailout;
+
+ /* collect client-started and client-died */
+
+ for (i = 0; i < stuff->nRanges; i++)
+ {
+ if (pRanges[i].clientStarted) clientStarted = TRUE;
+ if (pRanges[i].clientDied) clientDied = TRUE;
+ }
+
+ /* We now have all the information collected to create all the sets,
+ * and we can compute the total memory required for the RCAP.
+ */
+
+ totRCAPsize = sizeof(RecordClientsAndProtocolRec);
+
+ /* leave a little room to grow before forcing a separate allocation */
+ sizeClients = nClients + CLIENT_ARRAY_GROWTH_INCREMENT;
+ pad = RecordPadAlign(totRCAPsize, sizeof(XID));
+ clientListOffset = totRCAPsize + pad;
+ totRCAPsize += pad + sizeClients * sizeof(XID);
+
+ if (nExtReqSets)
+ {
+ pad = RecordPadAlign(totRCAPsize, sizeof(RecordSetPtr));
+ extReqSetsOffset = totRCAPsize + pad;
+ totRCAPsize += pad + (nExtReqSets + 1) * sizeof(RecordMinorOpRec);
+ }
+ if (nExtRepSets)
+ {
+ pad = RecordPadAlign(totRCAPsize, sizeof(RecordSetPtr));
+ extRepSetsOffset = totRCAPsize + pad;
+ totRCAPsize += pad + (nExtRepSets + 1) * sizeof(RecordMinorOpRec);
+ }
+
+ for (i = 0; i < maxSets; i++)
+ {
+ if (si[i].nintervals)
+ {
+ si[i].size = RecordSetMemoryRequirements(
+ si[i].intervals, si[i].nintervals, &si[i].align);
+ pad = RecordPadAlign(totRCAPsize, si[i].align);
+ si[i].offset = pad + totRCAPsize;
+ totRCAPsize += pad + si[i].size;
+ }
+ }
+
+ /* allocate memory for the whole RCAP */
+
+ pRCAP = (RecordClientsAndProtocolPtr)malloc(totRCAPsize);
+ if (!pRCAP)
+ {
+ err = BadAlloc;
+ goto bailout;
+ }
+
+ /* fill in the RCAP */
+
+ pRCAP->pContext = pContext;
+ pRCAP->pClientIDs = (XID *)((char *)pRCAP + clientListOffset);
+ pRCAP->numClients = nClients;
+ pRCAP->sizeClients = sizeClients;
+ pRCAP->clientIDsSeparatelyAllocated = 0;
+ for (i = 0; i < nClients; i++)
+ {
+ RecordDeleteClientFromContext(pContext, pCanonClients[i]);
+ pRCAP->pClientIDs[i] = pCanonClients[i];
+ }
+
+ /* create all the sets */
+
+ if (si[REQ].intervals)
+ {
+ pRCAP->pRequestMajorOpSet =
+ RecordCreateSet(si[REQ].intervals, si[REQ].nintervals,
+ (RecordSetPtr)((char *)pRCAP + si[REQ].offset), si[REQ].size);
+ }
+ else pRCAP->pRequestMajorOpSet = NULL;
+
+ if (si[REP].intervals)
+ {
+ pRCAP->pReplyMajorOpSet =
+ RecordCreateSet(si[REP].intervals, si[REP].nintervals,
+ (RecordSetPtr)((char *)pRCAP + si[REP].offset), si[REP].size);
+ }
+ else pRCAP->pReplyMajorOpSet = NULL;
+
+ if (si[ERR].intervals)
+ {
+ pRCAP->pErrorSet =
+ RecordCreateSet(si[ERR].intervals, si[ERR].nintervals,
+ (RecordSetPtr)((char *)pRCAP + si[ERR].offset), si[ERR].size);
+ }
+ else pRCAP->pErrorSet = NULL;
+
+ if (si[DEV].intervals)
+ {
+ pRCAP->pDeviceEventSet =
+ RecordCreateSet(si[DEV].intervals, si[DEV].nintervals,
+ (RecordSetPtr)((char *)pRCAP + si[DEV].offset), si[DEV].size);
+ }
+ else pRCAP->pDeviceEventSet = NULL;
+
+ if (si[DLEV].intervals)
+ {
+ pRCAP->pDeliveredEventSet =
+ RecordCreateSet(si[DLEV].intervals, si[DLEV].nintervals,
+ (RecordSetPtr)((char *)pRCAP + si[DLEV].offset), si[DLEV].size);
+ }
+ else pRCAP->pDeliveredEventSet = NULL;
+
+ if (nExtReqSets)
+ {
+ pRCAP->pRequestMinOpInfo = (RecordMinorOpPtr)
+ ((char *)pRCAP + extReqSetsOffset);
+ pRCAP->pRequestMinOpInfo[0].count = nExtReqSets;
+ for (i = 0; i < nExtReqSets; i++, pExtReqSets++)
+ {
+ pRCAP->pRequestMinOpInfo[i+1].major.first = pExtReqSets->first;
+ pRCAP->pRequestMinOpInfo[i+1].major.last = pExtReqSets->last;
+ pRCAP->pRequestMinOpInfo[i+1].major.pMinOpSet =
+ RecordCreateSet(pExtReqSets->intervals,
+ pExtReqSets->nintervals,
+ (RecordSetPtr)((char *)pRCAP + pExtReqSets->offset),
+ pExtReqSets->size);
+ }
+ }
+ else pRCAP->pRequestMinOpInfo = NULL;
+
+ if (nExtRepSets)
+ {
+ pRCAP->pReplyMinOpInfo = (RecordMinorOpPtr)
+ ((char *)pRCAP + extRepSetsOffset);
+ pRCAP->pReplyMinOpInfo[0].count = nExtRepSets;
+ for (i = 0; i < nExtRepSets; i++, pExtRepSets++)
+ {
+ pRCAP->pReplyMinOpInfo[i+1].major.first = pExtRepSets->first;
+ pRCAP->pReplyMinOpInfo[i+1].major.last = pExtRepSets->last;
+ pRCAP->pReplyMinOpInfo[i+1].major.pMinOpSet =
+ RecordCreateSet(pExtRepSets->intervals,
+ pExtRepSets->nintervals,
+ (RecordSetPtr)((char *)pRCAP + pExtRepSets->offset),
+ pExtRepSets->size);
+ }
+ }
+ else pRCAP->pReplyMinOpInfo = NULL;
+
+ pRCAP->clientStarted = clientStarted;
+ pRCAP->clientDied = clientDied;
+
+ /* link the RCAP onto the context */
+
+ pRCAP->pNextRCAP = pContext->pListOfRCAP;
+ pContext->pListOfRCAP = pRCAP;
+
+ if (pContext->pRecordingClient) /* context enabled */
+ RecordInstallHooks(pRCAP, 0);
+
+bailout:
+ if (si)
+ {
+ for (i = 0; i < maxSets; i++)
+ if (si[i].intervals)
+ free(si[i].intervals);
+ free(si);
+ }
+ if (pCanonClients && pCanonClients != (XID *)&stuff[1])
+ free(pCanonClients);
+ return err;
+} /* RecordRegisterClients */
+
+
+/* Proc functions all take a client argument, execute the request in
+ * client->requestBuffer, and return a protocol error status.
+ */
+
+static int
+ProcRecordQueryVersion(ClientPtr client)
+{
+ /* REQUEST(xRecordQueryVersionReq); */
+ xRecordQueryVersionReply rep;
+ int n;
+
+ REQUEST_SIZE_MATCH(xRecordQueryVersionReq);
+ rep.type = X_Reply;
+ rep.sequenceNumber = client->sequence;
+ rep.length = 0;
+ rep.majorVersion = SERVER_RECORD_MAJOR_VERSION;
+ rep.minorVersion = SERVER_RECORD_MINOR_VERSION;
+ if(client->swapped)
+ {
+ swaps(&rep.sequenceNumber, n);
+ swaps(&rep.majorVersion, n);
+ swaps(&rep.minorVersion, n);
+ }
+ (void)WriteToClient(client, sizeof(xRecordQueryVersionReply),
+ (char *)&rep);
+ return Success;
+} /* ProcRecordQueryVersion */
+
+
+static int
+ProcRecordCreateContext(ClientPtr client)
+{
+ REQUEST(xRecordCreateContextReq);
+ RecordContextPtr pContext;
+ RecordContextPtr *ppNewAllContexts = NULL;
+ int err = BadAlloc;
+
+ REQUEST_AT_LEAST_SIZE(xRecordCreateContextReq);
+ LEGAL_NEW_RESOURCE(stuff->context, client);
+
+ pContext = (RecordContextPtr)malloc(sizeof(RecordContextRec));
+ if (!pContext)
+ goto bailout;
+
+ /* make sure there is room in ppAllContexts to store the new context */
+
+ ppNewAllContexts = (RecordContextPtr *)
+ realloc(ppAllContexts, sizeof(RecordContextPtr) * (numContexts + 1));
+ if (!ppNewAllContexts)
+ goto bailout;
+ ppAllContexts = ppNewAllContexts;
+
+ pContext->id = stuff->context;
+ pContext->pRecordingClient = NULL;
+ pContext->pListOfRCAP = NULL;
+ pContext->elemHeaders = 0;
+ pContext->bufCategory = 0;
+ pContext->numBufBytes = 0;
+ pContext->pBufClient = NULL;
+ pContext->continuedReply = 0;
+
+ err = RecordRegisterClients(pContext, client,
+ (xRecordRegisterClientsReq *)stuff);
+ if (err != Success)
+ goto bailout;
+
+ if (AddResource(pContext->id, RTContext, pContext))
+ {
+ ppAllContexts[numContexts++] = pContext;
+ return Success;
+ }
+ else
+ {
+ RecordDeleteContext((pointer)pContext, pContext->id);
+ err = BadAlloc;
+ }
+bailout:
+ if (pContext)
+ free(pContext);
+ return err;
+} /* ProcRecordCreateContext */
+
+
+static int
+ProcRecordRegisterClients(ClientPtr client)
+{
+ RecordContextPtr pContext;
+ REQUEST(xRecordRegisterClientsReq);
+
+ REQUEST_AT_LEAST_SIZE(xRecordRegisterClientsReq);
+ VERIFY_CONTEXT(pContext, stuff->context, client);
+
+ return RecordRegisterClients(pContext, client, stuff);
+} /* ProcRecordRegisterClients */
+
+
+static int
+ProcRecordUnregisterClients(ClientPtr client)
+{
+ RecordContextPtr pContext;
+ int err;
+ REQUEST(xRecordUnregisterClientsReq);
+ XID *pCanonClients;
+ int nClients;
+ int i;
+
+ REQUEST_AT_LEAST_SIZE(xRecordUnregisterClientsReq);
+ if ((client->req_len << 2) - SIZEOF(xRecordUnregisterClientsReq) !=
+ 4 * stuff->nClients)
+ return BadLength;
+ VERIFY_CONTEXT(pContext, stuff->context, client);
+ err = RecordSanityCheckClientSpecifiers(client, (XID *)&stuff[1],
+ stuff->nClients, 0);
+ if (err != Success)
+ return err;
+
+ nClients = stuff->nClients;
+ pCanonClients = RecordCanonicalizeClientSpecifiers((XID *)&stuff[1],
+ &nClients, 0);
+ if (!pCanonClients)
+ return BadAlloc;
+
+ for (i = 0; i < nClients; i++)
+ {
+ RecordDeleteClientFromContext(pContext, pCanonClients[i]);
+ }
+ if (pCanonClients != (XID *)&stuff[1])
+ free(pCanonClients);
+ return Success;
+} /* ProcRecordUnregisterClients */
+
+
+/****************************************************************************/
+
+/* stuff for GetContext */
+
+/* This is a tactical structure used to hold the xRecordRanges as they are
+ * being reconstituted from the sets in the RCAPs.
+ */
+
+typedef struct {
+ xRecordRange *pRanges; /* array of xRecordRanges for one RCAP */
+ int size; /* number of elements in pRanges, >= nRanges */
+ int nRanges; /* number of occupied element of pRanges */
+} GetContextRangeInfoRec, *GetContextRangeInfoPtr;
+
+
+/* RecordAllocRanges
+ *
+ * Arguments:
+ * pri is a pointer to a GetContextRangeInfoRec to allocate for.
+ * nRanges is the number of xRecordRanges desired for pri.
+ *
+ * Returns: BadAlloc if a memory allocation error occurred, else Success.
+ *
+ * Side Effects:
+ * If Success is returned, pri->pRanges points to at least nRanges
+ * ranges. pri->nRanges is set to nRanges. pri->size is the actual
+ * number of ranges. Newly allocated ranges are zeroed.
+ */
+static int
+RecordAllocRanges(GetContextRangeInfoPtr pri, int nRanges)
+{
+ int newsize;
+ xRecordRange *pNewRange;
+#define SZINCR 8
+
+ newsize = max(pri->size + SZINCR, nRanges);
+ pNewRange = (xRecordRange *)realloc(pri->pRanges,
+ newsize * sizeof(xRecordRange));
+ if (!pNewRange)
+ return BadAlloc;
+
+ pri->pRanges = pNewRange;
+ pri->size = newsize;
+ bzero(&pri->pRanges[pri->size - SZINCR], SZINCR * sizeof(xRecordRange));
+ if (pri->nRanges < nRanges)
+ pri->nRanges = nRanges;
+ return Success;
+} /* RecordAllocRanges */
+
+
+/* RecordConvertSetToRanges
+ *
+ * Arguments:
+ * pSet is the set to be converted.
+ * pri is where the result should be stored.
+ * byteoffset is the offset from the start of an xRecordRange of the
+ * two vales (first, last) we are interested in.
+ * card8 is TRUE if the vales are one byte each and FALSE if two bytes
+ * each.
+ * imax is the largest set value to store in pri->pRanges.
+ * pStartIndex, if non-NULL, is the index of the first range in
+ * pri->pRanges that should be stored to. If NULL,
+ * start at index 0.
+ *
+ * Returns: BadAlloc if a memory allocation error occurred, else Success.
+ *
+ * Side Effects:
+ * If Success is returned, the slice of pri->pRanges indicated by
+ * byteoffset and card8 is filled in with the intervals from pSet.
+ * if pStartIndex was non-NULL, *pStartIndex is filled in with one
+ * more than the index of the last xRecordRange that was touched.
+ */
+static int
+RecordConvertSetToRanges(
+ RecordSetPtr pSet,
+ GetContextRangeInfoPtr pri,
+ int byteoffset,
+ Bool card8,
+ unsigned int imax,
+ int *pStartIndex
+)
+{
+ int nRanges;
+ RecordSetIteratePtr pIter = NULL;
+ RecordSetInterval interval;
+ CARD8 *pCARD8;
+ CARD16 *pCARD16;
+ int err;
+
+ if (!pSet)
+ return Success;
+
+ nRanges = pStartIndex ? *pStartIndex : 0;
+ while ((pIter = RecordIterateSet(pSet, pIter, &interval)))
+ {
+ if (interval.first > imax) break;
+ if (interval.last > imax) interval.last = imax;
+ nRanges++;
+ if (nRanges > pri->size)
+ {
+ err = RecordAllocRanges(pri, nRanges);
+ if (err != Success)
+ return err;
+ }
+ else
+ pri->nRanges = max(pri->nRanges, nRanges);
+ if (card8)
+ {
+ pCARD8 = ((CARD8 *)&pri->pRanges[nRanges-1]) + byteoffset;
+ *pCARD8++ = interval.first;
+ *pCARD8 = interval.last;
+ }
+ else
+ {
+ pCARD16 = (CARD16 *)
+ (((char *)&pri->pRanges[nRanges-1]) + byteoffset);
+ *pCARD16++ = interval.first;
+ *pCARD16 = interval.last;
+ }
+ }
+ if (pStartIndex)
+ *pStartIndex = nRanges;
+ return Success;
+} /* RecordConvertSetToRanges */
+
+
+/* RecordConvertMinorOpInfoToRanges
+ *
+ * Arguments:
+ * pMinOpInfo is the minor opcode info to convert to xRecordRanges.
+ * pri is where the result should be stored.
+ * byteoffset is the offset from the start of an xRecordRange of the
+ * four vales (CARD8 major_first, CARD8 major_last,
+ * CARD16 minor_first, CARD16 minor_last) we are going to store.
+ *
+ * Returns: BadAlloc if a memory allocation error occurred, else Success.
+ *
+ * Side Effects:
+ * If Success is returned, the slice of pri->pRanges indicated by
+ * byteoffset is filled in with the information from pMinOpInfo.
+ */
+static int
+RecordConvertMinorOpInfoToRanges(
+ RecordMinorOpPtr pMinOpInfo,
+ GetContextRangeInfoPtr pri,
+ int byteoffset
+)
+{
+ int nsets;
+ int start;
+ int i;
+ int err;
+
+ if (!pMinOpInfo)
+ return Success;
+
+ nsets = pMinOpInfo->count;
+ pMinOpInfo++;
+ start = 0;
+ for (i = 0; i < nsets; i++)
+ {
+ int j, s;
+ s = start;
+ err = RecordConvertSetToRanges(pMinOpInfo[i].major.pMinOpSet, pri,
+ byteoffset + 2, FALSE, 65535, &start);
+ if (err != Success) return err;
+ for (j = s; j < start; j++)
+ {
+ CARD8 *pCARD8 = ((CARD8 *)&pri->pRanges[j]) + byteoffset;
+ *pCARD8++ = pMinOpInfo[i].major.first;
+ *pCARD8 = pMinOpInfo[i].major.last;
+ }
+ }
+ return Success;
+} /* RecordConvertMinorOpInfoToRanges */
+
+
+/* RecordSwapRanges
+ *
+ * Arguments:
+ * pRanges is an array of xRecordRanges.
+ * nRanges is the number of elements in pRanges.
+ *
+ * Returns: nothing.
+ *
+ * Side Effects:
+ * The 16 bit fields of each xRecordRange are byte swapped.
+ */
+static void
+RecordSwapRanges(xRecordRange *pRanges, int nRanges)
+{
+ int i;
+ register char n;
+ for (i = 0; i < nRanges; i++, pRanges++)
+ {
+ swaps(&pRanges->extRequestsMinorFirst, n);
+ swaps(&pRanges->extRequestsMinorLast, n);
+ swaps(&pRanges->extRepliesMinorFirst, n);
+ swaps(&pRanges->extRepliesMinorLast, n);
+ }
+} /* RecordSwapRanges */
+
+
+static int
+ProcRecordGetContext(ClientPtr client)
+{
+ RecordContextPtr pContext;
+ REQUEST(xRecordGetContextReq);
+ xRecordGetContextReply rep;
+ int n;
+ RecordClientsAndProtocolPtr pRCAP;
+ int nRCAPs = 0;
+ GetContextRangeInfoPtr pRangeInfo;
+ GetContextRangeInfoPtr pri;
+ int i;
+ int err;
+
+ REQUEST_SIZE_MATCH(xRecordGetContextReq);
+ VERIFY_CONTEXT(pContext, stuff->context, client);
+
+ /* how many RCAPs are there on this context? */
+
+ for (pRCAP = pContext->pListOfRCAP; pRCAP; pRCAP = pRCAP->pNextRCAP)
+ nRCAPs++;
+
+ /* allocate and initialize space for record range info */
+
+ pRangeInfo = (GetContextRangeInfoPtr)malloc(
+ nRCAPs * sizeof(GetContextRangeInfoRec));
+ if (!pRangeInfo && nRCAPs > 0)
+ return BadAlloc;
+ for (i = 0; i < nRCAPs; i++)
+ {
+ pRangeInfo[i].pRanges = NULL;
+ pRangeInfo[i].size = 0;
+ pRangeInfo[i].nRanges = 0;
+ }
+
+ /* convert the RCAP (internal) representation of the recorded protocol
+ * to the wire protocol (external) representation, storing the information
+ * for the ith RCAP in pri[i]
+ */
+
+ for (pRCAP = pContext->pListOfRCAP, pri = pRangeInfo;
+ pRCAP;
+ pRCAP = pRCAP->pNextRCAP, pri++)
+ {
+ xRecordRange rr;
+
+ err = RecordConvertSetToRanges(pRCAP->pRequestMajorOpSet, pri,
+ offset_of(rr, coreRequestsFirst), TRUE, 127, NULL);
+ if (err != Success) goto bailout;
+
+ err = RecordConvertSetToRanges(pRCAP->pReplyMajorOpSet, pri,
+ offset_of(rr, coreRepliesFirst), TRUE, 127, NULL);
+ if (err != Success) goto bailout;
+
+ err = RecordConvertSetToRanges(pRCAP->pDeliveredEventSet, pri,
+ offset_of(rr, deliveredEventsFirst), TRUE, 255, NULL);
+ if (err != Success) goto bailout;
+
+ err = RecordConvertSetToRanges(pRCAP->pDeviceEventSet, pri,
+ offset_of(rr, deviceEventsFirst), TRUE, 255, NULL);
+ if (err != Success) goto bailout;
+
+ err = RecordConvertSetToRanges(pRCAP->pErrorSet, pri,
+ offset_of(rr, errorsFirst), TRUE, 255, NULL);
+ if (err != Success) goto bailout;
+
+ err = RecordConvertMinorOpInfoToRanges(pRCAP->pRequestMinOpInfo,
+ pri, offset_of(rr, extRequestsMajorFirst));
+ if (err != Success) goto bailout;
+
+ err = RecordConvertMinorOpInfoToRanges(pRCAP->pReplyMinOpInfo,
+ pri, offset_of(rr, extRepliesMajorFirst));
+ if (err != Success) goto bailout;
+
+ if (pRCAP->clientStarted || pRCAP->clientDied)
+ {
+ if (pri->nRanges == 0)
+ RecordAllocRanges(pri, 1);
+ pri->pRanges[0].clientStarted = pRCAP->clientStarted;
+ pri->pRanges[0].clientDied = pRCAP->clientDied;
+ }
+ }
+
+ /* calculate number of clients and reply length */
+
+ rep.nClients = 0;
+ rep.length = 0;
+ for (pRCAP = pContext->pListOfRCAP, pri = pRangeInfo;
+ pRCAP;
+ pRCAP = pRCAP->pNextRCAP, pri++)
+ {
+ rep.nClients += pRCAP->numClients;
+ rep.length += pRCAP->numClients *
+ ( bytes_to_int32(sizeof(xRecordClientInfo)) +
+ pri->nRanges * bytes_to_int32(sizeof(xRecordRange)));
+ }
+
+ /* write the reply header */
+
+ rep.type = X_Reply;
+ rep.sequenceNumber = client->sequence;
+ rep.enabled = pContext->pRecordingClient != NULL;
+ rep.elementHeader = pContext->elemHeaders;
+ if(client->swapped)
+ {
+ swaps(&rep.sequenceNumber, n);
+ swapl(&rep.length, n);
+ swapl(&rep.nClients, n);
+ }
+ (void)WriteToClient(client, sizeof(xRecordGetContextReply),
+ (char *)&rep);
+
+ /* write all the CLIENT_INFOs */
+
+ for (pRCAP = pContext->pListOfRCAP, pri = pRangeInfo;
+ pRCAP;
+ pRCAP = pRCAP->pNextRCAP, pri++)
+ {
+ xRecordClientInfo rci;
+ rci.nRanges = pri->nRanges;
+ if (client->swapped)
+ {
+ swapl(&rci.nRanges, n);
+ RecordSwapRanges(pri->pRanges, pri->nRanges);
+ }
+ for (i = 0; i < pRCAP->numClients; i++)
+ {
+ rci.clientResource = pRCAP->pClientIDs[i];
+ if (client->swapped) swapl(&rci.clientResource, n);
+ WriteToClient(client, sizeof(xRecordClientInfo), (char *)&rci);
+ WriteToClient(client, sizeof(xRecordRange) * pri->nRanges,
+ (char *)pri->pRanges);
+ }
+ }
+ err = Success;
+
+bailout:
+ for (i = 0; i < nRCAPs; i++)
+ {
+ if (pRangeInfo[i].pRanges) free(pRangeInfo[i].pRanges);
+ }
+ free(pRangeInfo);
+ return err;
+} /* ProcRecordGetContext */
+
+
+static int
+ProcRecordEnableContext(ClientPtr client)
+{
+ RecordContextPtr pContext;
+ REQUEST(xRecordEnableContextReq);
+ int i;
+ RecordClientsAndProtocolPtr pRCAP;
+
+ REQUEST_SIZE_MATCH(xRecordGetContextReq);
+ VERIFY_CONTEXT(pContext, stuff->context, client);
+ if (pContext->pRecordingClient)
+ return BadMatch; /* already enabled */
+
+ /* install record hooks for each RCAP */
+
+ for (pRCAP = pContext->pListOfRCAP; pRCAP; pRCAP = pRCAP->pNextRCAP)
+ {
+ int err = RecordInstallHooks(pRCAP, 0);
+ if (err != Success)
+ { /* undo the previous installs */
+ RecordClientsAndProtocolPtr pUninstallRCAP;
+ for (pUninstallRCAP = pContext->pListOfRCAP;
+ pUninstallRCAP != pRCAP;
+ pUninstallRCAP = pUninstallRCAP->pNextRCAP)
+ {
+ RecordUninstallHooks(pUninstallRCAP, 0);
+ }
+ return err;
+ }
+ }
+
+ /* Disallow further request processing on this connection until
+ * the context is disabled.
+ */
+ IgnoreClient(client);
+ pContext->pRecordingClient = client;
+
+ /* Don't allow the data connection to record itself; unregister it. */
+ RecordDeleteClientFromContext(pContext,
+ pContext->pRecordingClient->clientAsMask);
+
+ /* move the newly enabled context to the front part of ppAllContexts,
+ * where all the enabled contexts are
+ */
+ i = RecordFindContextOnAllContexts(pContext);
+ assert(i >= numEnabledContexts);
+ if (i != numEnabledContexts)
+ {
+ ppAllContexts[i] = ppAllContexts[numEnabledContexts];
+ ppAllContexts[numEnabledContexts] = pContext;
+ }
+
+ ++numEnabledContexts;
+ assert(numEnabledContexts > 0);
+
+ /* send StartOfData */
+ RecordAProtocolElement(pContext, NULL, XRecordStartOfData, NULL, 0, 0);
+ RecordFlushReplyBuffer(pContext, NULL, 0, NULL, 0);
+ return Success;
+} /* ProcRecordEnableContext */
+
+
+/* RecordDisableContext
+ *
+ * Arguments:
+ * pContext is the context to disable.
+ * nRanges is the number of elements in pRanges.
+ *
+ * Returns: nothing.
+ *
+ * Side Effects:
+ * If the context was enabled, it is disabled. An EndOfData
+ * message is sent to the recording client. Recording hooks for
+ * this context are uninstalled. The context is moved to the
+ * rear part of the ppAllContexts array. numEnabledContexts is
+ * decremented. Request processing for the formerly recording client
+ * is resumed.
+ */
+static void
+RecordDisableContext(RecordContextPtr pContext)
+{
+ RecordClientsAndProtocolPtr pRCAP;
+ int i;
+
+ if (!pContext->pRecordingClient) return;
+ if (!pContext->pRecordingClient->clientGone)
+ {
+ RecordAProtocolElement(pContext, NULL, XRecordEndOfData, NULL, 0, 0);
+ RecordFlushReplyBuffer(pContext, NULL, 0, NULL, 0);
+ /* Re-enable request processing on this connection. */
+ AttendClient(pContext->pRecordingClient);
+ }
+
+ for (pRCAP = pContext->pListOfRCAP; pRCAP; pRCAP = pRCAP->pNextRCAP)
+ {
+ RecordUninstallHooks(pRCAP, 0);
+ }
+
+ pContext->pRecordingClient = NULL;
+
+ /* move the newly disabled context to the rear part of ppAllContexts,
+ * where all the disabled contexts are
+ */
+ i = RecordFindContextOnAllContexts(pContext);
+ assert( (i != -1) && (i < numEnabledContexts) );
+ if (i != (numEnabledContexts - 1) )
+ {
+ ppAllContexts[i] = ppAllContexts[numEnabledContexts-1];
+ ppAllContexts[numEnabledContexts-1] = pContext;
+ }
+ --numEnabledContexts;
+ assert(numEnabledContexts >= 0);
+} /* RecordDisableContext */
+
+
+static int
+ProcRecordDisableContext(ClientPtr client)
+{
+ RecordContextPtr pContext;
+ REQUEST(xRecordDisableContextReq);
+
+ REQUEST_SIZE_MATCH(xRecordDisableContextReq);
+ VERIFY_CONTEXT(pContext, stuff->context, client);
+ RecordDisableContext(pContext);
+ return Success;
+} /* ProcRecordDisableContext */
+
+
+/* RecordDeleteContext
+ *
+ * Arguments:
+ * value is the context to delete.
+ * id is its resource ID.
+ *
+ * Returns: Success.
+ *
+ * Side Effects:
+ * Disables the context, frees all associated memory, and removes
+ * it from the ppAllContexts array.
+ */
+static int
+RecordDeleteContext(pointer value, XID id)
+{
+ int i;
+ RecordContextPtr pContext = (RecordContextPtr)value;
+ RecordClientsAndProtocolPtr pRCAP;
+
+ RecordDisableContext(pContext);
+
+ /* Remove all the clients from all the RCAPs.
+ * As a result, the RCAPs will be freed.
+ */
+
+ while ((pRCAP = pContext->pListOfRCAP))
+ {
+ int numClients = pRCAP->numClients;
+ /* when the last client is deleted, the RCAP will go away. */
+ while(numClients--)
+ {
+ RecordDeleteClientFromRCAP(pRCAP, numClients);
+ }
+ }
+
+ free(pContext);
+
+ /* remove context from AllContexts list */
+
+ if (-1 != (i = RecordFindContextOnAllContexts(pContext)))
+ {
+ ppAllContexts[i] = ppAllContexts[numContexts - 1];
+ if (--numContexts == 0)
+ {
+ free(ppAllContexts);
+ ppAllContexts = NULL;
+ }
+ }
+ return Success;
+} /* RecordDeleteContext */
+
+
+static int
+ProcRecordFreeContext(ClientPtr client)
+{
+ RecordContextPtr pContext;
+ REQUEST(xRecordFreeContextReq);
+
+ REQUEST_SIZE_MATCH(xRecordFreeContextReq);
+ VERIFY_CONTEXT(pContext, stuff->context, client);
+ FreeResource(stuff->context, RT_NONE);
+ return Success;
+} /* ProcRecordFreeContext */
+
+
+static int
+ProcRecordDispatch(ClientPtr client)
+{
+ REQUEST(xReq);
+
+ switch (stuff->data)
+ {
+ case X_RecordQueryVersion:
+ return ProcRecordQueryVersion(client);
+ case X_RecordCreateContext:
+ return ProcRecordCreateContext(client);
+ case X_RecordRegisterClients:
+ return ProcRecordRegisterClients(client);
+ case X_RecordUnregisterClients:
+ return ProcRecordUnregisterClients(client);
+ case X_RecordGetContext:
+ return ProcRecordGetContext(client);
+ case X_RecordEnableContext:
+ return ProcRecordEnableContext(client);
+ case X_RecordDisableContext:
+ return ProcRecordDisableContext(client);
+ case X_RecordFreeContext:
+ return ProcRecordFreeContext(client);
+ default:
+ return BadRequest;
+ }
+} /* ProcRecordDispatch */
+
+
+static int
+SProcRecordQueryVersion(ClientPtr client)
+{
+ REQUEST(xRecordQueryVersionReq);
+ register char n;
+
+ swaps(&stuff->length, n);
+ REQUEST_SIZE_MATCH(xRecordQueryVersionReq);
+ swaps(&stuff->majorVersion, n);
+ swaps(&stuff->minorVersion,n);
+ return ProcRecordQueryVersion(client);
+} /* SProcRecordQueryVersion */
+
+
+static int
+SwapCreateRegister(xRecordRegisterClientsReq *stuff)
+{
+ register char n;
+ int i;
+ XID *pClientID;
+
+ swapl(&stuff->context, n);
+ swapl(&stuff->nClients, n);
+ swapl(&stuff->nRanges, n);
+ pClientID = (XID *)&stuff[1];
+ if (stuff->nClients > stuff->length - bytes_to_int32(sz_xRecordRegisterClientsReq))
+ return BadLength;
+ for (i = 0; i < stuff->nClients; i++, pClientID++)
+ {
+ swapl(pClientID, n);
+ }
+ if (stuff->nRanges > stuff->length - bytes_to_int32(sz_xRecordRegisterClientsReq)
+ - stuff->nClients)
+ return BadLength;
+ RecordSwapRanges((xRecordRange *)pClientID, stuff->nRanges);
+ return Success;
+} /* SwapCreateRegister */
+
+
+static int
+SProcRecordCreateContext(ClientPtr client)
+{
+ REQUEST(xRecordCreateContextReq);
+ int status;
+ register char n;
+
+ swaps(&stuff->length, n);
+ REQUEST_AT_LEAST_SIZE(xRecordCreateContextReq);
+ if ((status = SwapCreateRegister((pointer)stuff)) != Success)
+ return status;
+ return ProcRecordCreateContext(client);
+} /* SProcRecordCreateContext */
+
+
+static int
+SProcRecordRegisterClients(ClientPtr client)
+{
+ REQUEST(xRecordRegisterClientsReq);
+ int status;
+ register char n;
+
+ swaps(&stuff->length, n);
+ REQUEST_AT_LEAST_SIZE(xRecordRegisterClientsReq);
+ if ((status = SwapCreateRegister((pointer)stuff)) != Success)
+ return status;
+ return ProcRecordRegisterClients(client);
+} /* SProcRecordRegisterClients */
+
+
+static int
+SProcRecordUnregisterClients(ClientPtr client)
+{
+ REQUEST(xRecordUnregisterClientsReq);
+ register char n;
+
+ swaps(&stuff->length, n);
+ REQUEST_AT_LEAST_SIZE(xRecordUnregisterClientsReq);
+ swapl(&stuff->context, n);
+ swapl(&stuff->nClients, n);
+ SwapRestL(stuff);
+ return ProcRecordUnregisterClients(client);
+} /* SProcRecordUnregisterClients */
+
+
+static int
+SProcRecordGetContext(ClientPtr client)
+{
+ REQUEST(xRecordGetContextReq);
+ register char n;
+
+ swaps(&stuff->length, n);
+ REQUEST_SIZE_MATCH(xRecordGetContextReq);
+ swapl(&stuff->context, n);
+ return ProcRecordGetContext(client);
+} /* SProcRecordGetContext */
+
+static int
+SProcRecordEnableContext(ClientPtr client)
+{
+ REQUEST(xRecordEnableContextReq);
+ register char n;
+
+ swaps(&stuff->length, n);
+ REQUEST_SIZE_MATCH(xRecordEnableContextReq);
+ swapl(&stuff->context, n);
+ return ProcRecordEnableContext(client);
+} /* SProcRecordEnableContext */
+
+
+static int
+SProcRecordDisableContext(ClientPtr client)
+{
+ REQUEST(xRecordDisableContextReq);
+ register char n;
+
+ swaps(&stuff->length, n);
+ REQUEST_SIZE_MATCH(xRecordDisableContextReq);
+ swapl(&stuff->context, n);
+ return ProcRecordDisableContext(client);
+} /* SProcRecordDisableContext */
+
+
+static int
+SProcRecordFreeContext(ClientPtr client)
+{
+ REQUEST(xRecordFreeContextReq);
+ register char n;
+
+ swaps(&stuff->length, n);
+ REQUEST_SIZE_MATCH(xRecordFreeContextReq);
+ swapl(&stuff->context, n);
+ return ProcRecordFreeContext(client);
+} /* SProcRecordFreeContext */
+
+
+static int
+SProcRecordDispatch(ClientPtr client)
+{
+ REQUEST(xReq);
+
+ switch (stuff->data)
+ {
+ case X_RecordQueryVersion:
+ return SProcRecordQueryVersion(client);
+ case X_RecordCreateContext:
+ return SProcRecordCreateContext(client);
+ case X_RecordRegisterClients:
+ return SProcRecordRegisterClients(client);
+ case X_RecordUnregisterClients:
+ return SProcRecordUnregisterClients(client);
+ case X_RecordGetContext:
+ return SProcRecordGetContext(client);
+ case X_RecordEnableContext:
+ return SProcRecordEnableContext(client);
+ case X_RecordDisableContext:
+ return SProcRecordDisableContext(client);
+ case X_RecordFreeContext:
+ return SProcRecordFreeContext(client);
+ default:
+ return BadRequest;
+ }
+} /* SProcRecordDispatch */
+
+/* RecordConnectionSetupInfo
+ *
+ * Arguments:
+ * pContext is an enabled context that specifies recording of
+ * connection setup info.
+ * pci holds the connection setup info.
+ *
+ * Returns: nothing.
+ *
+ * Side Effects:
+ * The connection setup info is sent to the recording client.
+ */
+static void
+RecordConnectionSetupInfo(RecordContextPtr pContext, NewClientInfoRec *pci)
+{
+ int prefixsize = SIZEOF(xConnSetupPrefix);
+ int restsize = pci->prefix->length * 4;
+
+ if (pci->client->swapped)
+ {
+ char *pConnSetup = (char *)malloc(prefixsize + restsize);
+ if (!pConnSetup)
+ return;
+ SwapConnSetupPrefix(pci->prefix, (xConnSetupPrefix*)pConnSetup);
+ SwapConnSetupInfo((char*)pci->setup, (char*)(pConnSetup + prefixsize));
+ RecordAProtocolElement(pContext, pci->client, XRecordClientStarted,
+ (pointer)pConnSetup, prefixsize + restsize, 0);
+ free(pConnSetup);
+ }
+ else
+ {
+ /* don't alloc and copy as in the swapped case; just send the
+ * data in two pieces
+ */
+ RecordAProtocolElement(pContext, pci->client, XRecordClientStarted,
+ (pointer)pci->prefix, prefixsize, restsize);
+ RecordAProtocolElement(pContext, pci->client, XRecordClientStarted,
+ (pointer)pci->setup, restsize, /* continuation */ -1);
+ }
+} /* RecordConnectionSetupInfo */
+
+
+/* RecordDeleteContext
+ *
+ * Arguments:
+ * pcbl is &ClientStateCallback.
+ * nullata is NULL.
+ * calldata is a pointer to a NewClientInfoRec (include/dixstruct.h)
+ * which contains information about client state changes.
+ *
+ * Returns: nothing.
+ *
+ * Side Effects:
+ * If a new client has connected and any contexts have specified
+ * XRecordFutureClients, the new client is registered on those contexts.
+ * If any of those contexts specify recording of the connection setup
+ * info, it is recorded.
+ *
+ * If an existing client has disconnected, it is deleted from any
+ * contexts that it was registered on. If any of those contexts
+ * specified XRecordClientDied, they record a ClientDied protocol element.
+ * If the disconnectiong client happened to be the data connection of an
+ * enabled context, the context is disabled.
+ */
+
+static void
+RecordAClientStateChange(CallbackListPtr *pcbl, pointer nulldata, pointer calldata)
+{
+ NewClientInfoRec *pci = (NewClientInfoRec *)calldata;
+ int i;
+ ClientPtr pClient = pci->client;
+
+ switch (pClient->clientState)
+ {
+ case ClientStateRunning: /* new client */
+ for (i = 0; i < numContexts; i++)
+ {
+ RecordClientsAndProtocolPtr pRCAP;
+ RecordContextPtr pContext = ppAllContexts[i];
+
+ if ((pRCAP = RecordFindClientOnContext(pContext,
+ XRecordFutureClients, NULL)))
+ {
+ RecordAddClientToRCAP(pRCAP, pClient->clientAsMask);
+ if (pContext->pRecordingClient && pRCAP->clientStarted)
+ RecordConnectionSetupInfo(pContext, pci);
+ }
+ }
+ break;
+
+ case ClientStateGone:
+ case ClientStateRetained: /* client disconnected */
+ for (i = 0; i < numContexts; i++)
+ {
+ RecordClientsAndProtocolPtr pRCAP;
+ RecordContextPtr pContext = ppAllContexts[i];
+ int pos;
+
+ if (pContext->pRecordingClient == pClient)
+ RecordDisableContext(pContext);
+ if ((pRCAP = RecordFindClientOnContext(pContext,
+ pClient->clientAsMask, &pos)))
+ {
+ if (pContext->pRecordingClient && pRCAP->clientDied)
+ RecordAProtocolElement(pContext, pClient,
+ XRecordClientDied, NULL, 0, 0);
+ RecordDeleteClientFromRCAP(pRCAP, pos);
+ }
+ }
+ break;
+
+ default:
+ break;
+ } /* end switch on client state */
+} /* RecordAClientStateChange */
+
+
+/* RecordCloseDown
+ *
+ * Arguments:
+ * extEntry is the extension information for RECORD.
+ *
+ * Returns: nothing.
+ *
+ * Side Effects:
+ * Performs any cleanup needed by RECORD at server shutdown time.
+ *
+ */
+static void
+RecordCloseDown(ExtensionEntry *extEntry)
+{
+ DeleteCallback(&ClientStateCallback, RecordAClientStateChange, NULL);
+} /* RecordCloseDown */
+
+
+/* RecordExtensionInit
+ *
+ * Arguments: none.
+ *
+ * Returns: nothing.
+ *
+ * Side Effects:
+ * Enables the RECORD extension if possible.
+ */
+void
+RecordExtensionInit(void)
+{
+ ExtensionEntry *extentry;
+
+ RTContext = CreateNewResourceType(RecordDeleteContext, "RecordContext");
+ if (!RTContext)
+ return;
+
+ ppAllContexts = NULL;
+ numContexts = numEnabledContexts = numEnabledRCAPs = 0;
+
+ if (!AddCallback(&ClientStateCallback, RecordAClientStateChange, NULL))
+ return;
+
+ extentry = AddExtension(RECORD_NAME, RecordNumEvents, RecordNumErrors,
+ ProcRecordDispatch, SProcRecordDispatch,
+ RecordCloseDown, StandardMinorOpcode);
+ if (!extentry)
+ {
+ DeleteCallback(&ClientStateCallback, RecordAClientStateChange, NULL);
+ return;
+ }
+ RecordErrorBase = extentry->errorBase;
+
+} /* RecordExtensionInit */
+
diff --git a/xorg-server/record/set.c b/xorg-server/record/set.c index f0e094eed..12f0d1267 100644 --- a/xorg-server/record/set.c +++ b/xorg-server/record/set.c @@ -1,431 +1,431 @@ -/* - -Copyright 1995, 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. - -*/ - -/* - - See the header set.h for a description of the set ADT. - - Implementation Strategy - - A bit vector is an obvious choice to represent the set, but may take - too much memory, depending on the numerically largest member in the - set. One expected common case is for the client to ask for *all* - protocol. This means it would ask for minor opcodes 0 through 65535. - Representing this as a bit vector takes 8K -- and there may be - multiple minor opcode intervals, as many as one per major (extension) - opcode). In such cases, a list-of-intervals representation would be - preferable to reduce memory consumption. Both representations will be - implemented, and RecordCreateSet will decide heuristically which one - to use based on the set members. - -*/ - -#ifdef HAVE_DIX_CONFIG_H -#include <dix-config.h> -#endif - -#include <string.h> - -#include "misc.h" -#include "set.h" - -static int -maxMemberInInterval(RecordSetInterval *pIntervals, int nIntervals) -{ - int i; - int maxMember = -1; - for (i = 0; i < nIntervals; i++) - { - if (maxMember < (int)pIntervals[i].last) - maxMember = pIntervals[i].last; - } - return maxMember; -} - -static void -NoopDestroySet(RecordSetPtr pSet) -{ -} - -/***************************************************************************/ - -/* set operations for bit vector representation */ - -typedef struct { - RecordSetRec baseSet; - int maxMember; - /* followed by the bit vector itself */ -} BitVectorSet, *BitVectorSetPtr; - -#define BITS_PER_LONG (sizeof(unsigned long) * 8) - -static void -BitVectorDestroySet(RecordSetPtr pSet) -{ - xfree(pSet); -} - -static unsigned long -BitVectorIsMemberOfSet(RecordSetPtr pSet, int pm) -{ - BitVectorSetPtr pbvs = (BitVectorSetPtr)pSet; - unsigned long *pbitvec; - - if ((int)pm > pbvs->maxMember) return FALSE; - pbitvec = (unsigned long *)(&pbvs[1]); - return (pbitvec[pm / BITS_PER_LONG] & ((unsigned long)1 << (pm % BITS_PER_LONG))); -} - - -static int -BitVectorFindBit(RecordSetPtr pSet, int iterbit, Bool bitval) -{ - BitVectorSetPtr pbvs = (BitVectorSetPtr)pSet; - unsigned long *pbitvec = (unsigned long *)(&pbvs[1]); - int startlong; - int startbit; - int walkbit; - int maxMember; - unsigned long skipval; - unsigned long bits; - unsigned long usefulbits; - - startlong = iterbit / BITS_PER_LONG; - pbitvec += startlong; - startbit = startlong * BITS_PER_LONG; - skipval = bitval ? 0L : ~0L; - maxMember = pbvs->maxMember; - - - if (startbit > maxMember) return -1; - bits = *pbitvec; - usefulbits = ~(((unsigned long)1 << (iterbit - startbit)) - 1); - if ( (bits & usefulbits) == (skipval & usefulbits) ) - { - pbitvec++; - startbit += BITS_PER_LONG; - - while (startbit <= maxMember && *pbitvec == skipval) - { - pbitvec++; - startbit += BITS_PER_LONG; - } - if (startbit > maxMember) return -1; - } - - walkbit = (startbit < iterbit) ? iterbit - startbit : 0; - - bits = *pbitvec; - while (walkbit < BITS_PER_LONG && ((!(bits & ((unsigned long)1 << walkbit))) == bitval)) - walkbit++; - - return startbit + walkbit; -} - - -static RecordSetIteratePtr -BitVectorIterateSet(RecordSetPtr pSet, RecordSetIteratePtr pIter, - RecordSetInterval *pInterval) -{ - int iterbit = (int)(long)pIter; - int b; - - b = BitVectorFindBit(pSet, iterbit, TRUE); - if (b == -1) return (RecordSetIteratePtr)0; - pInterval->first = b; - - b = BitVectorFindBit(pSet, b, FALSE); - pInterval->last = (b < 0) ? ((BitVectorSetPtr)pSet)->maxMember : b - 1; - return (RecordSetIteratePtr)(long)(pInterval->last + 1); -} - -static RecordSetOperations BitVectorSetOperations = { - BitVectorDestroySet, BitVectorIsMemberOfSet, BitVectorIterateSet }; - -static RecordSetOperations BitVectorNoFreeOperations = { - NoopDestroySet, BitVectorIsMemberOfSet, BitVectorIterateSet }; - -static int -BitVectorSetMemoryRequirements(RecordSetInterval *pIntervals, int nIntervals, - int maxMember, int *alignment) -{ - int nlongs; - - *alignment = sizeof(unsigned long); - nlongs = (maxMember + BITS_PER_LONG) / BITS_PER_LONG; - return (sizeof(BitVectorSet) + nlongs * sizeof(unsigned long)); -} - -static RecordSetPtr -BitVectorCreateSet(RecordSetInterval *pIntervals, int nIntervals, - void *pMem, int memsize) -{ - BitVectorSetPtr pbvs; - int i, j; - unsigned long *pbitvec; - - /* allocate all storage needed by this set in one chunk */ - - if (pMem) - { - memset(pMem, 0, memsize); - pbvs = (BitVectorSetPtr)pMem; - pbvs->baseSet.ops = &BitVectorNoFreeOperations; - } - else - { - pbvs = (BitVectorSetPtr)Xcalloc(memsize); - if (!pbvs) return NULL; - pbvs->baseSet.ops = &BitVectorSetOperations; - } - - pbvs->maxMember = maxMemberInInterval(pIntervals, nIntervals); - - /* fill in the set */ - - pbitvec = (unsigned long *)(&pbvs[1]); - for (i = 0; i < nIntervals; i++) - { - for (j = pIntervals[i].first; j <= (int)pIntervals[i].last; j++) - { - pbitvec[j/BITS_PER_LONG] |= ((unsigned long)1 << (j % BITS_PER_LONG)); - } - } - return (RecordSetPtr)pbvs; -} - - -/***************************************************************************/ - -/* set operations for interval list representation */ - -typedef struct { - RecordSetRec baseSet; - int nIntervals; - /* followed by the intervals (RecordSetInterval) */ -} IntervalListSet, *IntervalListSetPtr; - -static void -IntervalListDestroySet(RecordSetPtr pSet) -{ - xfree(pSet); -} - -static unsigned long -IntervalListIsMemberOfSet(RecordSetPtr pSet, int pm) -{ - IntervalListSetPtr prls = (IntervalListSetPtr)pSet; - RecordSetInterval *pInterval = (RecordSetInterval *)(&prls[1]); - int hi, lo, probe; - - /* binary search */ - lo = 0; hi = prls->nIntervals - 1; - while (lo <= hi) - { - probe = (hi + lo) / 2; - if (pm >= pInterval[probe].first && pm <= pInterval[probe].last) return 1; - else if (pm < pInterval[probe].first) hi = probe - 1; - else lo = probe + 1; - } - return 0; -} - - -static RecordSetIteratePtr -IntervalListIterateSet(RecordSetPtr pSet, RecordSetIteratePtr pIter, - RecordSetInterval *pIntervalReturn) -{ - RecordSetInterval *pInterval = (RecordSetInterval *)pIter; - IntervalListSetPtr prls = (IntervalListSetPtr)pSet; - - if (pInterval == NULL) - { - pInterval = (RecordSetInterval *)(&prls[1]); - } - - if ( (pInterval - (RecordSetInterval *)(&prls[1])) < prls->nIntervals ) - { - *pIntervalReturn = *pInterval; - return (RecordSetIteratePtr)(++pInterval); - } - else - return (RecordSetIteratePtr)NULL; -} - -static RecordSetOperations IntervalListSetOperations = { - IntervalListDestroySet, IntervalListIsMemberOfSet, IntervalListIterateSet }; - -static RecordSetOperations IntervalListNoFreeOperations = { - NoopDestroySet, IntervalListIsMemberOfSet, IntervalListIterateSet }; - -static int -IntervalListMemoryRequirements(RecordSetInterval *pIntervals, int nIntervals, - int maxMember, int *alignment) -{ - *alignment = sizeof(unsigned long); - return sizeof(IntervalListSet) + nIntervals * sizeof(RecordSetInterval); -} - -static RecordSetPtr -IntervalListCreateSet(RecordSetInterval *pIntervals, int nIntervals, - void *pMem, int memsize) -{ - IntervalListSetPtr prls; - int i, j, k; - RecordSetInterval *stackIntervals = NULL; - CARD16 first; - - if (nIntervals > 0) - { - stackIntervals = (RecordSetInterval *)xalloc( - sizeof(RecordSetInterval) * nIntervals); - if (!stackIntervals) return NULL; - - /* sort intervals, store in stackIntervals (insertion sort) */ - - for (i = 0; i < nIntervals; i++) - { - first = pIntervals[i].first; - for (j = 0; j < i; j++) - { - if (first < stackIntervals[j].first) - break; - } - for (k = i; k > j; k--) - { - stackIntervals[k] = stackIntervals[k-1]; - } - stackIntervals[j] = pIntervals[i]; - } - - /* merge abutting/overlapping intervals */ - - for (i = 0; i < nIntervals - 1; ) - { - if ( (stackIntervals[i].last + (unsigned int)1) < - stackIntervals[i + 1].first) - { - i++; /* disjoint intervals */ - } - else - { - stackIntervals[i].last = max(stackIntervals[i].last, - stackIntervals[i + 1].last); - nIntervals--; - for (j = i + 1; j < nIntervals; j++) - stackIntervals[j] = stackIntervals[j + 1]; - } - } - } - - /* allocate and fill in set structure */ - - if (pMem) - { - prls = (IntervalListSetPtr)pMem; - prls->baseSet.ops = &IntervalListNoFreeOperations; - } - else - { - prls = (IntervalListSetPtr) - xalloc(sizeof(IntervalListSet) + nIntervals * sizeof(RecordSetInterval)); - if (!prls) goto bailout; - prls->baseSet.ops = &IntervalListSetOperations; - } - memcpy(&prls[1], stackIntervals, nIntervals * sizeof(RecordSetInterval)); - prls->nIntervals = nIntervals; -bailout: - if (stackIntervals) xfree(stackIntervals); - return (RecordSetPtr)prls; -} - -typedef RecordSetPtr (*RecordCreateSetProcPtr)( - RecordSetInterval *pIntervals, - int nIntervals, - void *pMem, - int memsize -); - -static int -_RecordSetMemoryRequirements(RecordSetInterval *pIntervals, int nIntervals, - int *alignment, - RecordCreateSetProcPtr *ppCreateSet) -{ - int bmsize, rlsize, bma, rla; - int maxMember; - - /* find maximum member of set so we know how big to make the bit vector */ - maxMember = maxMemberInInterval(pIntervals, nIntervals); - - bmsize = BitVectorSetMemoryRequirements(pIntervals, nIntervals, maxMember, - &bma); - rlsize = IntervalListMemoryRequirements(pIntervals, nIntervals, maxMember, - &rla); - if ( ( (nIntervals > 1) && (maxMember <= 255) ) - || (bmsize < rlsize) ) - { - *alignment = bma; - *ppCreateSet = BitVectorCreateSet; - return bmsize; - } - else - { - *alignment = rla; - *ppCreateSet = IntervalListCreateSet; - return rlsize; - } -} - -/***************************************************************************/ - -/* user-visible functions */ - -int -RecordSetMemoryRequirements(RecordSetInterval *pIntervals, int nIntervals, int *alignment) -{ - RecordCreateSetProcPtr pCreateSet; - return _RecordSetMemoryRequirements(pIntervals, nIntervals, alignment, - &pCreateSet); -} - -RecordSetPtr -RecordCreateSet(RecordSetInterval *pIntervals, int nIntervals, void *pMem, int memsize) -{ - RecordCreateSetProcPtr pCreateSet; - int alignment; - int size; - - size = _RecordSetMemoryRequirements(pIntervals, nIntervals, &alignment, - &pCreateSet); - if (pMem) - { - if ( ((long)pMem & (alignment-1) ) || memsize < size) - return NULL; - } - return (*pCreateSet)(pIntervals, nIntervals, pMem, size); -} +/*
+
+Copyright 1995, 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.
+
+*/
+
+/*
+
+ See the header set.h for a description of the set ADT.
+
+ Implementation Strategy
+
+ A bit vector is an obvious choice to represent the set, but may take
+ too much memory, depending on the numerically largest member in the
+ set. One expected common case is for the client to ask for *all*
+ protocol. This means it would ask for minor opcodes 0 through 65535.
+ Representing this as a bit vector takes 8K -- and there may be
+ multiple minor opcode intervals, as many as one per major (extension)
+ opcode). In such cases, a list-of-intervals representation would be
+ preferable to reduce memory consumption. Both representations will be
+ implemented, and RecordCreateSet will decide heuristically which one
+ to use based on the set members.
+
+*/
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <string.h>
+
+#include "misc.h"
+#include "set.h"
+
+static int
+maxMemberInInterval(RecordSetInterval *pIntervals, int nIntervals)
+{
+ int i;
+ int maxMember = -1;
+ for (i = 0; i < nIntervals; i++)
+ {
+ if (maxMember < (int)pIntervals[i].last)
+ maxMember = pIntervals[i].last;
+ }
+ return maxMember;
+}
+
+static void
+NoopDestroySet(RecordSetPtr pSet)
+{
+}
+
+/***************************************************************************/
+
+/* set operations for bit vector representation */
+
+typedef struct {
+ RecordSetRec baseSet;
+ int maxMember;
+ /* followed by the bit vector itself */
+} BitVectorSet, *BitVectorSetPtr;
+
+#define BITS_PER_LONG (sizeof(unsigned long) * 8)
+
+static void
+BitVectorDestroySet(RecordSetPtr pSet)
+{
+ free(pSet);
+}
+
+static unsigned long
+BitVectorIsMemberOfSet(RecordSetPtr pSet, int pm)
+{
+ BitVectorSetPtr pbvs = (BitVectorSetPtr)pSet;
+ unsigned long *pbitvec;
+
+ if ((int)pm > pbvs->maxMember) return FALSE;
+ pbitvec = (unsigned long *)(&pbvs[1]);
+ return (pbitvec[pm / BITS_PER_LONG] & ((unsigned long)1 << (pm % BITS_PER_LONG)));
+}
+
+
+static int
+BitVectorFindBit(RecordSetPtr pSet, int iterbit, Bool bitval)
+{
+ BitVectorSetPtr pbvs = (BitVectorSetPtr)pSet;
+ unsigned long *pbitvec = (unsigned long *)(&pbvs[1]);
+ int startlong;
+ int startbit;
+ int walkbit;
+ int maxMember;
+ unsigned long skipval;
+ unsigned long bits;
+ unsigned long usefulbits;
+
+ startlong = iterbit / BITS_PER_LONG;
+ pbitvec += startlong;
+ startbit = startlong * BITS_PER_LONG;
+ skipval = bitval ? 0L : ~0L;
+ maxMember = pbvs->maxMember;
+
+
+ if (startbit > maxMember) return -1;
+ bits = *pbitvec;
+ usefulbits = ~(((unsigned long)1 << (iterbit - startbit)) - 1);
+ if ( (bits & usefulbits) == (skipval & usefulbits) )
+ {
+ pbitvec++;
+ startbit += BITS_PER_LONG;
+
+ while (startbit <= maxMember && *pbitvec == skipval)
+ {
+ pbitvec++;
+ startbit += BITS_PER_LONG;
+ }
+ if (startbit > maxMember) return -1;
+ }
+
+ walkbit = (startbit < iterbit) ? iterbit - startbit : 0;
+
+ bits = *pbitvec;
+ while (walkbit < BITS_PER_LONG && ((!(bits & ((unsigned long)1 << walkbit))) == bitval))
+ walkbit++;
+
+ return startbit + walkbit;
+}
+
+
+static RecordSetIteratePtr
+BitVectorIterateSet(RecordSetPtr pSet, RecordSetIteratePtr pIter,
+ RecordSetInterval *pInterval)
+{
+ int iterbit = (int)(long)pIter;
+ int b;
+
+ b = BitVectorFindBit(pSet, iterbit, TRUE);
+ if (b == -1) return (RecordSetIteratePtr)0;
+ pInterval->first = b;
+
+ b = BitVectorFindBit(pSet, b, FALSE);
+ pInterval->last = (b < 0) ? ((BitVectorSetPtr)pSet)->maxMember : b - 1;
+ return (RecordSetIteratePtr)(long)(pInterval->last + 1);
+}
+
+static RecordSetOperations BitVectorSetOperations = {
+ BitVectorDestroySet, BitVectorIsMemberOfSet, BitVectorIterateSet };
+
+static RecordSetOperations BitVectorNoFreeOperations = {
+ NoopDestroySet, BitVectorIsMemberOfSet, BitVectorIterateSet };
+
+static int
+BitVectorSetMemoryRequirements(RecordSetInterval *pIntervals, int nIntervals,
+ int maxMember, int *alignment)
+{
+ int nlongs;
+
+ *alignment = sizeof(unsigned long);
+ nlongs = (maxMember + BITS_PER_LONG) / BITS_PER_LONG;
+ return (sizeof(BitVectorSet) + nlongs * sizeof(unsigned long));
+}
+
+static RecordSetPtr
+BitVectorCreateSet(RecordSetInterval *pIntervals, int nIntervals,
+ void *pMem, int memsize)
+{
+ BitVectorSetPtr pbvs;
+ int i, j;
+ unsigned long *pbitvec;
+
+ /* allocate all storage needed by this set in one chunk */
+
+ if (pMem)
+ {
+ memset(pMem, 0, memsize);
+ pbvs = (BitVectorSetPtr)pMem;
+ pbvs->baseSet.ops = &BitVectorNoFreeOperations;
+ }
+ else
+ {
+ pbvs = (BitVectorSetPtr)calloc(1, memsize);
+ if (!pbvs) return NULL;
+ pbvs->baseSet.ops = &BitVectorSetOperations;
+ }
+
+ pbvs->maxMember = maxMemberInInterval(pIntervals, nIntervals);
+
+ /* fill in the set */
+
+ pbitvec = (unsigned long *)(&pbvs[1]);
+ for (i = 0; i < nIntervals; i++)
+ {
+ for (j = pIntervals[i].first; j <= (int)pIntervals[i].last; j++)
+ {
+ pbitvec[j/BITS_PER_LONG] |= ((unsigned long)1 << (j % BITS_PER_LONG));
+ }
+ }
+ return (RecordSetPtr)pbvs;
+}
+
+
+/***************************************************************************/
+
+/* set operations for interval list representation */
+
+typedef struct {
+ RecordSetRec baseSet;
+ int nIntervals;
+ /* followed by the intervals (RecordSetInterval) */
+} IntervalListSet, *IntervalListSetPtr;
+
+static void
+IntervalListDestroySet(RecordSetPtr pSet)
+{
+ free(pSet);
+}
+
+static unsigned long
+IntervalListIsMemberOfSet(RecordSetPtr pSet, int pm)
+{
+ IntervalListSetPtr prls = (IntervalListSetPtr)pSet;
+ RecordSetInterval *pInterval = (RecordSetInterval *)(&prls[1]);
+ int hi, lo, probe;
+
+ /* binary search */
+ lo = 0; hi = prls->nIntervals - 1;
+ while (lo <= hi)
+ {
+ probe = (hi + lo) / 2;
+ if (pm >= pInterval[probe].first && pm <= pInterval[probe].last) return 1;
+ else if (pm < pInterval[probe].first) hi = probe - 1;
+ else lo = probe + 1;
+ }
+ return 0;
+}
+
+
+static RecordSetIteratePtr
+IntervalListIterateSet(RecordSetPtr pSet, RecordSetIteratePtr pIter,
+ RecordSetInterval *pIntervalReturn)
+{
+ RecordSetInterval *pInterval = (RecordSetInterval *)pIter;
+ IntervalListSetPtr prls = (IntervalListSetPtr)pSet;
+
+ if (pInterval == NULL)
+ {
+ pInterval = (RecordSetInterval *)(&prls[1]);
+ }
+
+ if ( (pInterval - (RecordSetInterval *)(&prls[1])) < prls->nIntervals )
+ {
+ *pIntervalReturn = *pInterval;
+ return (RecordSetIteratePtr)(++pInterval);
+ }
+ else
+ return (RecordSetIteratePtr)NULL;
+}
+
+static RecordSetOperations IntervalListSetOperations = {
+ IntervalListDestroySet, IntervalListIsMemberOfSet, IntervalListIterateSet };
+
+static RecordSetOperations IntervalListNoFreeOperations = {
+ NoopDestroySet, IntervalListIsMemberOfSet, IntervalListIterateSet };
+
+static int
+IntervalListMemoryRequirements(RecordSetInterval *pIntervals, int nIntervals,
+ int maxMember, int *alignment)
+{
+ *alignment = sizeof(unsigned long);
+ return sizeof(IntervalListSet) + nIntervals * sizeof(RecordSetInterval);
+}
+
+static RecordSetPtr
+IntervalListCreateSet(RecordSetInterval *pIntervals, int nIntervals,
+ void *pMem, int memsize)
+{
+ IntervalListSetPtr prls;
+ int i, j, k;
+ RecordSetInterval *stackIntervals = NULL;
+ CARD16 first;
+
+ if (nIntervals > 0)
+ {
+ stackIntervals = (RecordSetInterval *)malloc(
+ sizeof(RecordSetInterval) * nIntervals);
+ if (!stackIntervals) return NULL;
+
+ /* sort intervals, store in stackIntervals (insertion sort) */
+
+ for (i = 0; i < nIntervals; i++)
+ {
+ first = pIntervals[i].first;
+ for (j = 0; j < i; j++)
+ {
+ if (first < stackIntervals[j].first)
+ break;
+ }
+ for (k = i; k > j; k--)
+ {
+ stackIntervals[k] = stackIntervals[k-1];
+ }
+ stackIntervals[j] = pIntervals[i];
+ }
+
+ /* merge abutting/overlapping intervals */
+
+ for (i = 0; i < nIntervals - 1; )
+ {
+ if ( (stackIntervals[i].last + (unsigned int)1) <
+ stackIntervals[i + 1].first)
+ {
+ i++; /* disjoint intervals */
+ }
+ else
+ {
+ stackIntervals[i].last = max(stackIntervals[i].last,
+ stackIntervals[i + 1].last);
+ nIntervals--;
+ for (j = i + 1; j < nIntervals; j++)
+ stackIntervals[j] = stackIntervals[j + 1];
+ }
+ }
+ }
+
+ /* allocate and fill in set structure */
+
+ if (pMem)
+ {
+ prls = (IntervalListSetPtr)pMem;
+ prls->baseSet.ops = &IntervalListNoFreeOperations;
+ }
+ else
+ {
+ prls = (IntervalListSetPtr)
+ malloc(sizeof(IntervalListSet) + nIntervals * sizeof(RecordSetInterval));
+ if (!prls) goto bailout;
+ prls->baseSet.ops = &IntervalListSetOperations;
+ }
+ memcpy(&prls[1], stackIntervals, nIntervals * sizeof(RecordSetInterval));
+ prls->nIntervals = nIntervals;
+bailout:
+ if (stackIntervals) free(stackIntervals);
+ return (RecordSetPtr)prls;
+}
+
+typedef RecordSetPtr (*RecordCreateSetProcPtr)(
+ RecordSetInterval *pIntervals,
+ int nIntervals,
+ void *pMem,
+ int memsize
+);
+
+static int
+_RecordSetMemoryRequirements(RecordSetInterval *pIntervals, int nIntervals,
+ int *alignment,
+ RecordCreateSetProcPtr *ppCreateSet)
+{
+ int bmsize, rlsize, bma, rla;
+ int maxMember;
+
+ /* find maximum member of set so we know how big to make the bit vector */
+ maxMember = maxMemberInInterval(pIntervals, nIntervals);
+
+ bmsize = BitVectorSetMemoryRequirements(pIntervals, nIntervals, maxMember,
+ &bma);
+ rlsize = IntervalListMemoryRequirements(pIntervals, nIntervals, maxMember,
+ &rla);
+ if ( ( (nIntervals > 1) && (maxMember <= 255) )
+ || (bmsize < rlsize) )
+ {
+ *alignment = bma;
+ *ppCreateSet = BitVectorCreateSet;
+ return bmsize;
+ }
+ else
+ {
+ *alignment = rla;
+ *ppCreateSet = IntervalListCreateSet;
+ return rlsize;
+ }
+}
+
+/***************************************************************************/
+
+/* user-visible functions */
+
+int
+RecordSetMemoryRequirements(RecordSetInterval *pIntervals, int nIntervals, int *alignment)
+{
+ RecordCreateSetProcPtr pCreateSet;
+ return _RecordSetMemoryRequirements(pIntervals, nIntervals, alignment,
+ &pCreateSet);
+}
+
+RecordSetPtr
+RecordCreateSet(RecordSetInterval *pIntervals, int nIntervals, void *pMem, int memsize)
+{
+ RecordCreateSetProcPtr pCreateSet;
+ int alignment;
+ int size;
+
+ size = _RecordSetMemoryRequirements(pIntervals, nIntervals, &alignment,
+ &pCreateSet);
+ if (pMem)
+ {
+ if ( ((long)pMem & (alignment-1) ) || memsize < size)
+ return NULL;
+ }
+ return (*pCreateSet)(pIntervals, nIntervals, pMem, size);
+}
|