| 1 | |
| 2 | /* |
| 3 | |
| 4 | Copyright 1995, 1998 The Open Group |
| 5 | |
| 6 | Permission to use, copy, modify, distribute, and sell this software and its |
| 7 | documentation for any purpose is hereby granted without fee, provided that |
| 8 | the above copyright notice appear in all copies and that both that |
| 9 | copyright notice and this permission notice appear in supporting |
| 10 | documentation. |
| 11 | |
| 12 | The above copyright notice and this permission notice shall be |
| 13 | included in all copies or substantial portions of the Software. |
| 14 | |
| 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 16 | EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 17 | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 18 | IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 19 | OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 20 | ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 21 | OTHER DEALINGS IN THE SOFTWARE. |
| 22 | |
| 23 | Except as contained in this notice, the name of The Open Group shall |
| 24 | not be used in advertising or otherwise to promote the sale, use or |
| 25 | other dealings in this Software without prior written authorization |
| 26 | from The Open Group. |
| 27 | |
| 28 | Author: David P. Wiggins, The Open Group |
| 29 | |
| 30 | This work benefited from earlier work done by Martha Zimet of NCD |
| 31 | and Jim Haggerty of Metheus. |
| 32 | |
| 33 | */ |
| 34 | |
| 35 | #ifdef HAVE_DIX_CONFIG_H |
| 36 | #include <dix-config.h> |
| 37 | #endif |
| 38 | |
| 39 | #include "dixstruct.h" |
| 40 | #include "extnsionst.h" |
| 41 | #include "extinit.h" |
| 42 | #include <X11/extensions/recordproto.h> |
| 43 | #include "set.h" |
| 44 | #include "swaprep.h" |
| 45 | #include "inputstr.h" |
| 46 | #include "eventconvert.h" |
| 47 | #include "scrnintstr.h" |
| 48 | |
| 49 | #include <stdio.h> |
| 50 | #include <assert.h> |
| 51 | |
| 52 | #ifdef PANORAMIX |
| 53 | #include "globals.h" |
| 54 | #include "panoramiX.h" |
| 55 | #include "panoramiXsrv.h" |
| 56 | #include "cursor.h" |
| 57 | #endif |
| 58 | |
| 59 | #include "protocol-versions.h" |
| 60 | |
| 61 | static RESTYPE RTContext; /* internal resource type for Record contexts */ |
| 62 | |
| 63 | /* How many bytes of protocol data to buffer in a context. Don't set to less |
| 64 | * than 32. |
| 65 | */ |
| 66 | #define REPLY_BUF_SIZE 1024 |
| 67 | |
| 68 | /* Record Context structure */ |
| 69 | |
| 70 | typedef struct { |
| 71 | XID id; /* resource id of context */ |
| 72 | ClientPtr pRecordingClient; /* client that has context enabled */ |
| 73 | struct _RecordClientsAndProtocolRec *pListOfRCAP; /* all registered info */ |
| 74 | ClientPtr pBufClient; /* client whose protocol is in replyBuffer */ |
| 75 | unsigned int continuedReply:1; /* recording a reply that is split up? */ |
| 76 | char elemHeaders; /* element header flags (time/seq no.) */ |
| 77 | char bufCategory; /* category of protocol in replyBuffer */ |
| 78 | int numBufBytes; /* number of bytes in replyBuffer */ |
| 79 | char replyBuffer[REPLY_BUF_SIZE]; /* buffered recorded protocol */ |
| 80 | int inFlush; /* are we inside RecordFlushReplyBuffer */ |
| 81 | } RecordContextRec, *RecordContextPtr; |
| 82 | |
| 83 | /* RecordMinorOpRec - to hold minor opcode selections for extension requests |
| 84 | * and replies |
| 85 | */ |
| 86 | |
| 87 | typedef union { |
| 88 | int count; /* first element of array: how many "major" structs to follow */ |
| 89 | struct { /* rest of array elements are this */ |
| 90 | short first; /* first major opcode */ |
| 91 | short last; /* last major opcode */ |
| 92 | RecordSetPtr pMinOpSet; /* minor opcode set for above major range */ |
| 93 | } major; |
| 94 | } RecordMinorOpRec, *RecordMinorOpPtr; |
| 95 | |
| 96 | /* RecordClientsAndProtocolRec, nicknamed RCAP - holds all the client and |
| 97 | * protocol selections passed in a single CreateContext or RegisterClients. |
| 98 | * Generally, a context will have one of these from the create and an |
| 99 | * additional one for each RegisterClients. RCAPs are freed when all their |
| 100 | * clients are unregistered. |
| 101 | */ |
| 102 | |
| 103 | typedef struct _RecordClientsAndProtocolRec { |
| 104 | RecordContextPtr pContext; /* context that owns this RCAP */ |
| 105 | struct _RecordClientsAndProtocolRec *pNextRCAP; /* next RCAP on context */ |
| 106 | RecordSetPtr pRequestMajorOpSet; /* requests to record */ |
| 107 | RecordMinorOpPtr pRequestMinOpInfo; /* extension requests to record */ |
| 108 | RecordSetPtr pReplyMajorOpSet; /* replies to record */ |
| 109 | RecordMinorOpPtr pReplyMinOpInfo; /* extension replies to record */ |
| 110 | RecordSetPtr pDeviceEventSet; /* device events to record */ |
| 111 | RecordSetPtr pDeliveredEventSet; /* delivered events to record */ |
| 112 | RecordSetPtr pErrorSet; /* errors to record */ |
| 113 | XID *pClientIDs; /* array of clients to record */ |
| 114 | short numClients; /* number of clients in pClientIDs */ |
| 115 | short sizeClients; /* size of pClientIDs array */ |
| 116 | unsigned int clientStarted:1; /* record new client connections? */ |
| 117 | unsigned int clientDied:1; /* record client disconnections? */ |
| 118 | unsigned int clientIDsSeparatelyAllocated:1; /* pClientIDs malloced? */ |
| 119 | } RecordClientsAndProtocolRec, *RecordClientsAndProtocolPtr; |
| 120 | |
| 121 | /* how much bigger to make pRCAP->pClientIDs when reallocing */ |
| 122 | #define CLIENT_ARRAY_GROWTH_INCREMENT 4 |
| 123 | |
| 124 | /* counts the total number of RCAPs belonging to enabled contexts. */ |
| 125 | static int numEnabledRCAPs; |
| 126 | |
| 127 | /* void VERIFY_CONTEXT(RecordContextPtr, XID, ClientPtr) |
| 128 | * In the spirit of the VERIFY_* macros in dix.h, this macro fills in |
| 129 | * the context pointer if the given ID is a valid Record Context, else it |
| 130 | * returns an error. |
| 131 | */ |
| 132 | #define VERIFY_CONTEXT(_pContext, _contextid, _client) { \ |
| 133 | int rc = dixLookupResourceByType((pointer *)&(_pContext), _contextid, \ |
| 134 | RTContext, _client, DixUseAccess); \ |
| 135 | if (rc != Success) \ |
| 136 | return rc; \ |
| 137 | } |
| 138 | |
| 139 | static int RecordDeleteContext(pointer /*value */ , |
| 140 | XID /*id */ |
| 141 | ); |
| 142 | |
| 143 | /***************************************************************************/ |
| 144 | |
| 145 | /* client private stuff */ |
| 146 | |
| 147 | /* To make declarations less obfuscated, have a typedef for a pointer to a |
| 148 | * Proc function. |
| 149 | */ |
| 150 | typedef int (*ProcFunctionPtr) (ClientPtr /*pClient */ |
| 151 | ); |
| 152 | |
| 153 | /* Record client private. Generally a client only has one of these if |
| 154 | * any of its requests are being recorded. |
| 155 | */ |
| 156 | typedef struct { |
| 157 | /* ptr to client's proc vector before Record stuck its nose in */ |
| 158 | ProcFunctionPtr *originalVector; |
| 159 | |
| 160 | /* proc vector with pointers for recorded requests redirected to the |
| 161 | * function RecordARequest |
| 162 | */ |
| 163 | ProcFunctionPtr recordVector[256]; |
| 164 | } RecordClientPrivateRec, *RecordClientPrivatePtr; |
| 165 | |
| 166 | static DevPrivateKeyRec RecordClientPrivateKeyRec; |
| 167 | |
| 168 | #define RecordClientPrivateKey (&RecordClientPrivateKeyRec) |
| 169 | |
| 170 | /* RecordClientPrivatePtr RecordClientPrivate(ClientPtr) |
| 171 | * gets the client private of the given client. Syntactic sugar. |
| 172 | */ |
| 173 | #define RecordClientPrivate(_pClient) (RecordClientPrivatePtr) \ |
| 174 | dixLookupPrivate(&(_pClient)->devPrivates, RecordClientPrivateKey) |
| 175 | \f |
| 176 | /***************************************************************************/ |
| 177 | |
| 178 | /* global list of all contexts */ |
| 179 | |
| 180 | static RecordContextPtr *ppAllContexts; |
| 181 | |
| 182 | static int numContexts; /* number of contexts in ppAllContexts */ |
| 183 | |
| 184 | /* number of currently enabled contexts. All enabled contexts are bunched |
| 185 | * up at the front of the ppAllContexts array, from ppAllContexts[0] to |
| 186 | * ppAllContexts[numEnabledContexts-1], to eliminate time spent skipping |
| 187 | * past disabled contexts. |
| 188 | */ |
| 189 | static int numEnabledContexts; |
| 190 | |
| 191 | /* RecordFindContextOnAllContexts |
| 192 | * |
| 193 | * Arguments: |
| 194 | * pContext is the context to search for. |
| 195 | * |
| 196 | * Returns: |
| 197 | * The index into the array ppAllContexts at which pContext is stored. |
| 198 | * If pContext is not found in ppAllContexts, returns -1. |
| 199 | * |
| 200 | * Side Effects: none. |
| 201 | */ |
| 202 | static int |
| 203 | RecordFindContextOnAllContexts(RecordContextPtr pContext) |
| 204 | { |
| 205 | int i; |
| 206 | |
| 207 | assert(numContexts >= numEnabledContexts); |
| 208 | for (i = 0; i < numContexts; i++) { |
| 209 | if (ppAllContexts[i] == pContext) |
| 210 | return i; |
| 211 | } |
| 212 | return -1; |
| 213 | } /* RecordFindContextOnAllContexts */ |
| 214 | \f |
| 215 | /***************************************************************************/ |
| 216 | |
| 217 | /* RecordFlushReplyBuffer |
| 218 | * |
| 219 | * Arguments: |
| 220 | * pContext is the context to flush. |
| 221 | * data1 is a pointer to additional data, and len1 is its length in bytes. |
| 222 | * data2 is a pointer to additional data, and len2 is its length in bytes. |
| 223 | * |
| 224 | * Returns: nothing. |
| 225 | * |
| 226 | * Side Effects: |
| 227 | * If the context is enabled, any buffered (recorded) protocol is written |
| 228 | * to the recording client, and the number of buffered bytes is set to |
| 229 | * zero. If len1 is not zero, data1/len1 are then written to the |
| 230 | * recording client, and similarly for data2/len2 (written after |
| 231 | * data1/len1). |
| 232 | */ |
| 233 | static void |
| 234 | RecordFlushReplyBuffer(RecordContextPtr pContext, |
| 235 | pointer data1, int len1, pointer data2, int len2) |
| 236 | { |
| 237 | if (!pContext->pRecordingClient || pContext->pRecordingClient->clientGone || |
| 238 | pContext->inFlush) |
| 239 | return; |
| 240 | ++pContext->inFlush; |
| 241 | if (pContext->numBufBytes) |
| 242 | WriteToClient(pContext->pRecordingClient, pContext->numBufBytes, |
| 243 | pContext->replyBuffer); |
| 244 | pContext->numBufBytes = 0; |
| 245 | if (len1) |
| 246 | WriteToClient(pContext->pRecordingClient, len1, data1); |
| 247 | if (len2) |
| 248 | WriteToClient(pContext->pRecordingClient, len2, data2); |
| 249 | --pContext->inFlush; |
| 250 | } /* RecordFlushReplyBuffer */ |
| 251 | |
| 252 | /* RecordAProtocolElement |
| 253 | * |
| 254 | * Arguments: |
| 255 | * pContext is the context that is recording a protocol element. |
| 256 | * pClient is the client whose protocol is being recorded. For |
| 257 | * device events and EndOfData, pClient is NULL. |
| 258 | * category is the category of the protocol element, as defined |
| 259 | * by the RECORD spec. |
| 260 | * data is a pointer to the protocol data, and datalen - padlen |
| 261 | * is its length in bytes. |
| 262 | * padlen is the number of pad bytes from a zeroed array. |
| 263 | * futurelen is the number of bytes that will be sent in subsequent |
| 264 | * calls to this function to complete this protocol element. |
| 265 | * In those subsequent calls, futurelen will be -1 to indicate |
| 266 | * that the current data is a continuation of the same protocol |
| 267 | * element. |
| 268 | * |
| 269 | * Returns: nothing. |
| 270 | * |
| 271 | * Side Effects: |
| 272 | * The context may be flushed. The new protocol element will be |
| 273 | * added to the context's protocol buffer with appropriate element |
| 274 | * headers prepended (sequence number and timestamp). If the data |
| 275 | * is continuation data (futurelen == -1), element headers won't |
| 276 | * be added. If the protocol element and headers won't fit in |
| 277 | * the context's buffer, it is sent directly to the recording |
| 278 | * client (after any buffered data). |
| 279 | */ |
| 280 | static void |
| 281 | RecordAProtocolElement(RecordContextPtr pContext, ClientPtr pClient, |
| 282 | int category, pointer data, int datalen, int padlen, |
| 283 | int futurelen) |
| 284 | { |
| 285 | CARD32 elemHeaderData[2]; |
| 286 | int numElemHeaders = 0; |
| 287 | Bool recordingClientSwapped = pContext->pRecordingClient->swapped; |
| 288 | CARD32 serverTime = 0; |
| 289 | Bool gotServerTime = FALSE; |
| 290 | int replylen; |
| 291 | |
| 292 | if (futurelen >= 0) { /* start of new protocol element */ |
| 293 | xRecordEnableContextReply *pRep = (xRecordEnableContextReply *) |
| 294 | pContext->replyBuffer; |
| 295 | |
| 296 | if (pContext->pBufClient != pClient || |
| 297 | pContext->bufCategory != category) { |
| 298 | RecordFlushReplyBuffer(pContext, NULL, 0, NULL, 0); |
| 299 | pContext->pBufClient = pClient; |
| 300 | pContext->bufCategory = category; |
| 301 | } |
| 302 | |
| 303 | if (!pContext->numBufBytes) { |
| 304 | serverTime = GetTimeInMillis(); |
| 305 | gotServerTime = TRUE; |
| 306 | pRep->type = X_Reply; |
| 307 | pRep->category = category; |
| 308 | pRep->sequenceNumber = pContext->pRecordingClient->sequence; |
| 309 | pRep->length = 0; |
| 310 | pRep->elementHeader = pContext->elemHeaders; |
| 311 | pRep->serverTime = serverTime; |
| 312 | if (pClient) { |
| 313 | pRep->clientSwapped = |
| 314 | (pClient->swapped != recordingClientSwapped); |
| 315 | pRep->idBase = pClient->clientAsMask; |
| 316 | pRep->recordedSequenceNumber = pClient->sequence; |
| 317 | } |
| 318 | else { /* it's a device event, StartOfData, or EndOfData */ |
| 319 | |
| 320 | pRep->clientSwapped = (category != XRecordFromServer) && |
| 321 | recordingClientSwapped; |
| 322 | pRep->idBase = 0; |
| 323 | pRep->recordedSequenceNumber = 0; |
| 324 | } |
| 325 | |
| 326 | if (recordingClientSwapped) { |
| 327 | swaps(&pRep->sequenceNumber); |
| 328 | swapl(&pRep->length); |
| 329 | swapl(&pRep->idBase); |
| 330 | swapl(&pRep->serverTime); |
| 331 | swapl(&pRep->recordedSequenceNumber); |
| 332 | } |
| 333 | pContext->numBufBytes = SIZEOF(xRecordEnableContextReply); |
| 334 | } |
| 335 | |
| 336 | /* generate element headers if needed */ |
| 337 | |
| 338 | if (((pContext->elemHeaders & XRecordFromClientTime) |
| 339 | && category == XRecordFromClient) |
| 340 | || ((pContext->elemHeaders & XRecordFromServerTime) |
| 341 | && category == XRecordFromServer)) { |
| 342 | if (gotServerTime) |
| 343 | elemHeaderData[numElemHeaders] = serverTime; |
| 344 | else |
| 345 | elemHeaderData[numElemHeaders] = GetTimeInMillis(); |
| 346 | if (recordingClientSwapped) |
| 347 | swapl(&elemHeaderData[numElemHeaders]); |
| 348 | numElemHeaders++; |
| 349 | } |
| 350 | |
| 351 | if ((pContext->elemHeaders & XRecordFromClientSequence) |
| 352 | && (category == XRecordFromClient || category == XRecordClientDied)) { |
| 353 | elemHeaderData[numElemHeaders] = pClient->sequence; |
| 354 | if (recordingClientSwapped) |
| 355 | swapl(&elemHeaderData[numElemHeaders]); |
| 356 | numElemHeaders++; |
| 357 | } |
| 358 | |
| 359 | /* adjust reply length */ |
| 360 | |
| 361 | replylen = pRep->length; |
| 362 | if (recordingClientSwapped) |
| 363 | swapl(&replylen); |
| 364 | replylen += numElemHeaders + bytes_to_int32(datalen) + |
| 365 | bytes_to_int32(futurelen); |
| 366 | if (recordingClientSwapped) |
| 367 | swapl(&replylen); |
| 368 | pRep->length = replylen; |
| 369 | } /* end if not continued reply */ |
| 370 | |
| 371 | numElemHeaders *= 4; |
| 372 | |
| 373 | /* if space available >= space needed, buffer the data */ |
| 374 | |
| 375 | if (REPLY_BUF_SIZE - pContext->numBufBytes >= datalen + numElemHeaders) { |
| 376 | if (numElemHeaders) { |
| 377 | memcpy(pContext->replyBuffer + pContext->numBufBytes, |
| 378 | elemHeaderData, numElemHeaders); |
| 379 | pContext->numBufBytes += numElemHeaders; |
| 380 | } |
| 381 | if (datalen) { |
| 382 | static char padBuffer[3]; /* as in FlushClient */ |
| 383 | |
| 384 | memcpy(pContext->replyBuffer + pContext->numBufBytes, |
| 385 | data, datalen - padlen); |
| 386 | pContext->numBufBytes += datalen - padlen; |
| 387 | memcpy(pContext->replyBuffer + pContext->numBufBytes, |
| 388 | padBuffer, padlen); |
| 389 | pContext->numBufBytes += padlen; |
| 390 | } |
| 391 | } |
| 392 | else { |
| 393 | RecordFlushReplyBuffer(pContext, (pointer) elemHeaderData, |
| 394 | numElemHeaders, (pointer) data, |
| 395 | datalen - padlen); |
| 396 | } |
| 397 | } /* RecordAProtocolElement */ |
| 398 | |
| 399 | /* RecordFindClientOnContext |
| 400 | * |
| 401 | * Arguments: |
| 402 | * pContext is the context to search. |
| 403 | * clientspec is the resource ID mask identifying the client to search |
| 404 | * for, or XRecordFutureClients. |
| 405 | * pposition is a pointer to an int, or NULL. See Returns. |
| 406 | * |
| 407 | * Returns: |
| 408 | * The RCAP on which clientspec was found, or NULL if not found on |
| 409 | * any RCAP on the given context. |
| 410 | * If pposition was not NULL and the returned RCAP is not NULL, |
| 411 | * *pposition will be set to the index into the returned the RCAP's |
| 412 | * pClientIDs array that holds clientspec. |
| 413 | * |
| 414 | * Side Effects: none. |
| 415 | */ |
| 416 | static RecordClientsAndProtocolPtr |
| 417 | RecordFindClientOnContext(RecordContextPtr pContext, |
| 418 | XID clientspec, int *pposition) |
| 419 | { |
| 420 | RecordClientsAndProtocolPtr pRCAP; |
| 421 | |
| 422 | for (pRCAP = pContext->pListOfRCAP; pRCAP; pRCAP = pRCAP->pNextRCAP) { |
| 423 | int i; |
| 424 | |
| 425 | for (i = 0; i < pRCAP->numClients; i++) { |
| 426 | if (pRCAP->pClientIDs[i] == clientspec) { |
| 427 | if (pposition) |
| 428 | *pposition = i; |
| 429 | return pRCAP; |
| 430 | } |
| 431 | } |
| 432 | } |
| 433 | return NULL; |
| 434 | } /* RecordFindClientOnContext */ |
| 435 | |
| 436 | /* RecordABigRequest |
| 437 | * |
| 438 | * Arguments: |
| 439 | * pContext is the recording context. |
| 440 | * client is the client being recorded. |
| 441 | * stuff is a pointer to the big request of client (see the Big Requests |
| 442 | * extension for details.) |
| 443 | * |
| 444 | * Returns: nothing. |
| 445 | * |
| 446 | * Side Effects: |
| 447 | * The big request is recorded with the correct length field re-inserted. |
| 448 | * |
| 449 | * Note: this function exists mainly to make RecordARequest smaller. |
| 450 | */ |
| 451 | static void |
| 452 | RecordABigRequest(RecordContextPtr pContext, ClientPtr client, xReq * stuff) |
| 453 | { |
| 454 | CARD32 bigLength; |
| 455 | int bytesLeft; |
| 456 | |
| 457 | /* note: client->req_len has been frobbed by ReadRequestFromClient |
| 458 | * (os/io.c) to discount the extra 4 bytes taken by the extended length |
| 459 | * field in a big request. The actual request length to record is |
| 460 | * client->req_len + 1 (measured in CARD32s). |
| 461 | */ |
| 462 | |
| 463 | /* record the request header */ |
| 464 | bytesLeft = client->req_len << 2; |
| 465 | RecordAProtocolElement(pContext, client, XRecordFromClient, |
| 466 | (pointer) stuff, SIZEOF(xReq), 0, bytesLeft); |
| 467 | |
| 468 | /* reinsert the extended length field that was squished out */ |
| 469 | bigLength = client->req_len + bytes_to_int32(sizeof(bigLength)); |
| 470 | if (client->swapped) |
| 471 | swapl(&bigLength); |
| 472 | RecordAProtocolElement(pContext, client, XRecordFromClient, |
| 473 | (pointer) &bigLength, sizeof(bigLength), 0, |
| 474 | /* continuation */ -1); |
| 475 | bytesLeft -= sizeof(bigLength); |
| 476 | |
| 477 | /* record the rest of the request after the length */ |
| 478 | RecordAProtocolElement(pContext, client, XRecordFromClient, |
| 479 | (pointer) (stuff + 1), bytesLeft, 0, |
| 480 | /* continuation */ -1); |
| 481 | } /* RecordABigRequest */ |
| 482 | |
| 483 | /* RecordARequest |
| 484 | * |
| 485 | * Arguments: |
| 486 | * client is a client that the server has dispatched a request to by |
| 487 | * calling client->requestVector[request opcode] . |
| 488 | * The request is in client->requestBuffer. |
| 489 | * |
| 490 | * Returns: |
| 491 | * Whatever is returned by the "real" Proc function for this request. |
| 492 | * The "real" Proc function is the function that was in |
| 493 | * client->requestVector[request opcode] before it was replaced by |
| 494 | * RecordARequest. (See the function RecordInstallHooks.) |
| 495 | * |
| 496 | * Side Effects: |
| 497 | * The request is recorded by all contexts that have registered this |
| 498 | * request for this client. The real Proc function is called. |
| 499 | */ |
| 500 | static int |
| 501 | RecordARequest(ClientPtr client) |
| 502 | { |
| 503 | RecordContextPtr pContext; |
| 504 | RecordClientsAndProtocolPtr pRCAP; |
| 505 | int i; |
| 506 | RecordClientPrivatePtr pClientPriv; |
| 507 | |
| 508 | REQUEST(xReq); |
| 509 | int majorop; |
| 510 | |
| 511 | majorop = stuff->reqType; |
| 512 | for (i = 0; i < numEnabledContexts; i++) { |
| 513 | pContext = ppAllContexts[i]; |
| 514 | pRCAP = RecordFindClientOnContext(pContext, client->clientAsMask, NULL); |
| 515 | if (pRCAP && pRCAP->pRequestMajorOpSet && |
| 516 | RecordIsMemberOfSet(pRCAP->pRequestMajorOpSet, majorop)) { |
| 517 | if (majorop <= 127) { /* core request */ |
| 518 | |
| 519 | if (stuff->length == 0) |
| 520 | RecordABigRequest(pContext, client, stuff); |
| 521 | else |
| 522 | RecordAProtocolElement(pContext, client, XRecordFromClient, |
| 523 | (pointer) stuff, |
| 524 | client->req_len << 2, 0, 0); |
| 525 | } |
| 526 | else { /* extension, check minor opcode */ |
| 527 | |
| 528 | int minorop = client->minorOp; |
| 529 | int numMinOpInfo; |
| 530 | RecordMinorOpPtr pMinorOpInfo = pRCAP->pRequestMinOpInfo; |
| 531 | |
| 532 | assert(pMinorOpInfo); |
| 533 | numMinOpInfo = pMinorOpInfo->count; |
| 534 | pMinorOpInfo++; |
| 535 | assert(numMinOpInfo); |
| 536 | for (; numMinOpInfo; numMinOpInfo--, pMinorOpInfo++) { |
| 537 | if (majorop >= pMinorOpInfo->major.first && |
| 538 | majorop <= pMinorOpInfo->major.last && |
| 539 | RecordIsMemberOfSet(pMinorOpInfo->major.pMinOpSet, |
| 540 | minorop)) { |
| 541 | if (stuff->length == 0) |
| 542 | RecordABigRequest(pContext, client, stuff); |
| 543 | else |
| 544 | RecordAProtocolElement(pContext, client, |
| 545 | XRecordFromClient, |
| 546 | (pointer) stuff, |
| 547 | client->req_len << 2, 0, 0); |
| 548 | break; |
| 549 | } |
| 550 | } /* end for each minor op info */ |
| 551 | } /* end extension request */ |
| 552 | } /* end this RCAP wants this major opcode */ |
| 553 | } /* end for each context */ |
| 554 | pClientPriv = RecordClientPrivate(client); |
| 555 | assert(pClientPriv); |
| 556 | return (*pClientPriv->originalVector[majorop]) (client); |
| 557 | } /* RecordARequest */ |
| 558 | |
| 559 | /* RecordAReply |
| 560 | * |
| 561 | * Arguments: |
| 562 | * pcbl is &ReplyCallback. |
| 563 | * nulldata is NULL. |
| 564 | * calldata is a pointer to a ReplyInfoRec (include/os.h) |
| 565 | * which provides information about replies that are being sent |
| 566 | * to clients. |
| 567 | * |
| 568 | * Returns: nothing. |
| 569 | * |
| 570 | * Side Effects: |
| 571 | * The reply is recorded by all contexts that have registered this |
| 572 | * reply type for this client. If more data belonging to the same |
| 573 | * reply is expected, and if the reply is being recorded by any |
| 574 | * context, pContext->continuedReply is set to 1. |
| 575 | * If pContext->continuedReply was already 1 and this is the last |
| 576 | * chunk of data belonging to this reply, it is set to 0. |
| 577 | */ |
| 578 | static void |
| 579 | RecordAReply(CallbackListPtr *pcbl, pointer nulldata, pointer calldata) |
| 580 | { |
| 581 | RecordContextPtr pContext; |
| 582 | RecordClientsAndProtocolPtr pRCAP; |
| 583 | int eci; |
| 584 | ReplyInfoRec *pri = (ReplyInfoRec *) calldata; |
| 585 | ClientPtr client = pri->client; |
| 586 | |
| 587 | for (eci = 0; eci < numEnabledContexts; eci++) { |
| 588 | pContext = ppAllContexts[eci]; |
| 589 | pRCAP = RecordFindClientOnContext(pContext, client->clientAsMask, NULL); |
| 590 | if (pRCAP) { |
| 591 | int majorop = client->majorOp; |
| 592 | |
| 593 | if (pContext->continuedReply) { |
| 594 | RecordAProtocolElement(pContext, client, XRecordFromServer, |
| 595 | (pointer) pri->replyData, |
| 596 | pri->dataLenBytes, pri->padBytes, |
| 597 | /* continuation */ -1); |
| 598 | if (!pri->bytesRemaining) |
| 599 | pContext->continuedReply = 0; |
| 600 | } |
| 601 | else if (pri->startOfReply && pRCAP->pReplyMajorOpSet && |
| 602 | RecordIsMemberOfSet(pRCAP->pReplyMajorOpSet, majorop)) { |
| 603 | if (majorop <= 127) { /* core reply */ |
| 604 | RecordAProtocolElement(pContext, client, XRecordFromServer, |
| 605 | (pointer) pri->replyData, |
| 606 | pri->dataLenBytes, 0, |
| 607 | pri->bytesRemaining); |
| 608 | if (pri->bytesRemaining) |
| 609 | pContext->continuedReply = 1; |
| 610 | } |
| 611 | else { /* extension, check minor opcode */ |
| 612 | |
| 613 | int minorop = client->minorOp; |
| 614 | int numMinOpInfo; |
| 615 | RecordMinorOpPtr pMinorOpInfo = pRCAP->pReplyMinOpInfo; |
| 616 | |
| 617 | assert(pMinorOpInfo); |
| 618 | numMinOpInfo = pMinorOpInfo->count; |
| 619 | pMinorOpInfo++; |
| 620 | assert(numMinOpInfo); |
| 621 | for (; numMinOpInfo; numMinOpInfo--, pMinorOpInfo++) { |
| 622 | if (majorop >= pMinorOpInfo->major.first && |
| 623 | majorop <= pMinorOpInfo->major.last && |
| 624 | RecordIsMemberOfSet(pMinorOpInfo->major.pMinOpSet, |
| 625 | minorop)) { |
| 626 | RecordAProtocolElement(pContext, client, |
| 627 | XRecordFromServer, |
| 628 | (pointer) pri->replyData, |
| 629 | pri->dataLenBytes, 0, |
| 630 | pri->bytesRemaining); |
| 631 | if (pri->bytesRemaining) |
| 632 | pContext->continuedReply = 1; |
| 633 | break; |
| 634 | } |
| 635 | } /* end for each minor op info */ |
| 636 | } /* end extension reply */ |
| 637 | } /* end continued reply vs. start of reply */ |
| 638 | } /* end client is registered on this context */ |
| 639 | } /* end for each context */ |
| 640 | } /* RecordAReply */ |
| 641 | |
| 642 | /* RecordADeliveredEventOrError |
| 643 | * |
| 644 | * Arguments: |
| 645 | * pcbl is &EventCallback. |
| 646 | * nulldata is NULL. |
| 647 | * calldata is a pointer to a EventInfoRec (include/dix.h) |
| 648 | * which provides information about events that are being sent |
| 649 | * to clients. |
| 650 | * |
| 651 | * Returns: nothing. |
| 652 | * |
| 653 | * Side Effects: |
| 654 | * The event or error is recorded by all contexts that have registered |
| 655 | * it for this client. |
| 656 | */ |
| 657 | static void |
| 658 | RecordADeliveredEventOrError(CallbackListPtr *pcbl, pointer nulldata, |
| 659 | pointer calldata) |
| 660 | { |
| 661 | EventInfoRec *pei = (EventInfoRec *) calldata; |
| 662 | RecordContextPtr pContext; |
| 663 | RecordClientsAndProtocolPtr pRCAP; |
| 664 | int eci; /* enabled context index */ |
| 665 | ClientPtr pClient = pei->client; |
| 666 | |
| 667 | for (eci = 0; eci < numEnabledContexts; eci++) { |
| 668 | pContext = ppAllContexts[eci]; |
| 669 | pRCAP = RecordFindClientOnContext(pContext, pClient->clientAsMask, |
| 670 | NULL); |
| 671 | if (pRCAP && (pRCAP->pDeliveredEventSet || pRCAP->pErrorSet)) { |
| 672 | int ev; /* event index */ |
| 673 | xEvent *pev = pei->events; |
| 674 | |
| 675 | for (ev = 0; ev < pei->count; ev++, pev++) { |
| 676 | int recordit = 0; |
| 677 | |
| 678 | if (pRCAP->pErrorSet) { |
| 679 | recordit = RecordIsMemberOfSet(pRCAP->pErrorSet, |
| 680 | ((xError *) (pev))-> |
| 681 | errorCode); |
| 682 | } |
| 683 | else if (pRCAP->pDeliveredEventSet) { |
| 684 | recordit = RecordIsMemberOfSet(pRCAP->pDeliveredEventSet, |
| 685 | pev->u.u.type & 0177); |
| 686 | } |
| 687 | if (recordit) { |
| 688 | xEvent swappedEvent; |
| 689 | xEvent *pEvToRecord = pev; |
| 690 | |
| 691 | if (pClient->swapped) { |
| 692 | (*EventSwapVector[pev->u.u.type & 0177]) |
| 693 | (pev, &swappedEvent); |
| 694 | pEvToRecord = &swappedEvent; |
| 695 | |
| 696 | } |
| 697 | RecordAProtocolElement(pContext, pClient, |
| 698 | XRecordFromServer, pEvToRecord, |
| 699 | SIZEOF(xEvent), 0, 0); |
| 700 | } |
| 701 | } /* end for each event */ |
| 702 | } /* end this client is on this context */ |
| 703 | } /* end for each enabled context */ |
| 704 | } /* RecordADeliveredEventOrError */ |
| 705 | |
| 706 | static void |
| 707 | RecordSendProtocolEvents(RecordClientsAndProtocolPtr pRCAP, |
| 708 | RecordContextPtr pContext, xEvent *pev, int count) |
| 709 | { |
| 710 | int ev; /* event index */ |
| 711 | |
| 712 | for (ev = 0; ev < count; ev++, pev++) { |
| 713 | if (RecordIsMemberOfSet(pRCAP->pDeviceEventSet, pev->u.u.type & 0177)) { |
| 714 | xEvent swappedEvent; |
| 715 | xEvent *pEvToRecord = pev; |
| 716 | |
| 717 | #ifdef PANORAMIX |
| 718 | xEvent shiftedEvent; |
| 719 | |
| 720 | if (!noPanoramiXExtension && |
| 721 | (pev->u.u.type == MotionNotify || |
| 722 | pev->u.u.type == ButtonPress || |
| 723 | pev->u.u.type == ButtonRelease || |
| 724 | pev->u.u.type == KeyPress || pev->u.u.type == KeyRelease)) { |
| 725 | int scr = XineramaGetCursorScreen(inputInfo.pointer); |
| 726 | |
| 727 | memcpy(&shiftedEvent, pev, sizeof(xEvent)); |
| 728 | shiftedEvent.u.keyButtonPointer.rootX += |
| 729 | screenInfo.screens[scr]->x - screenInfo.screens[0]->x; |
| 730 | shiftedEvent.u.keyButtonPointer.rootY += |
| 731 | screenInfo.screens[scr]->y - screenInfo.screens[0]->y; |
| 732 | pEvToRecord = &shiftedEvent; |
| 733 | } |
| 734 | #endif /* PANORAMIX */ |
| 735 | |
| 736 | if (pContext->pRecordingClient->swapped) { |
| 737 | (*EventSwapVector[pEvToRecord->u.u.type & 0177]) |
| 738 | (pEvToRecord, &swappedEvent); |
| 739 | pEvToRecord = &swappedEvent; |
| 740 | } |
| 741 | |
| 742 | RecordAProtocolElement(pContext, NULL, |
| 743 | XRecordFromServer, pEvToRecord, |
| 744 | SIZEOF(xEvent), 0, 0); |
| 745 | /* make sure device events get flushed in the absence |
| 746 | * of other client activity |
| 747 | */ |
| 748 | SetCriticalOutputPending(); |
| 749 | } |
| 750 | } /* end for each event */ |
| 751 | |
| 752 | } /* RecordADeviceEvent */ |
| 753 | |
| 754 | /* RecordADeviceEvent |
| 755 | * |
| 756 | * Arguments: |
| 757 | * pcbl is &DeviceEventCallback. |
| 758 | * nulldata is NULL. |
| 759 | * calldata is a pointer to a DeviceEventInfoRec (include/dix.h) |
| 760 | * which provides information about device events that occur. |
| 761 | * |
| 762 | * Returns: nothing. |
| 763 | * |
| 764 | * Side Effects: |
| 765 | * The device event is recorded by all contexts that have registered |
| 766 | * it for this client. |
| 767 | */ |
| 768 | static void |
| 769 | RecordADeviceEvent(CallbackListPtr *pcbl, pointer nulldata, pointer calldata) |
| 770 | { |
| 771 | DeviceEventInfoRec *pei = (DeviceEventInfoRec *) calldata; |
| 772 | RecordContextPtr pContext; |
| 773 | RecordClientsAndProtocolPtr pRCAP; |
| 774 | int eci; /* enabled context index */ |
| 775 | |
| 776 | for (eci = 0; eci < numEnabledContexts; eci++) { |
| 777 | pContext = ppAllContexts[eci]; |
| 778 | for (pRCAP = pContext->pListOfRCAP; pRCAP; pRCAP = pRCAP->pNextRCAP) { |
| 779 | if (pRCAP->pDeviceEventSet) { |
| 780 | int count; |
| 781 | xEvent *xi_events = NULL; |
| 782 | |
| 783 | /* TODO check return values */ |
| 784 | if (IsMaster(pei->device)) { |
| 785 | xEvent *core_events; |
| 786 | |
| 787 | EventToCore(pei->event, &core_events, &count); |
| 788 | RecordSendProtocolEvents(pRCAP, pContext, core_events, |
| 789 | count); |
| 790 | free(core_events); |
| 791 | } |
| 792 | |
| 793 | EventToXI(pei->event, &xi_events, &count); |
| 794 | RecordSendProtocolEvents(pRCAP, pContext, xi_events, count); |
| 795 | free(xi_events); |
| 796 | } /* end this RCAP selects device events */ |
| 797 | } /* end for each RCAP on this context */ |
| 798 | } /* end for each enabled context */ |
| 799 | } |
| 800 | |
| 801 | /* RecordFlushAllContexts |
| 802 | * |
| 803 | * Arguments: |
| 804 | * pcbl is &FlushCallback. |
| 805 | * nulldata and calldata are NULL. |
| 806 | * |
| 807 | * Returns: nothing. |
| 808 | * |
| 809 | * Side Effects: |
| 810 | * All buffered reply data of all enabled contexts is written to |
| 811 | * the recording clients. |
| 812 | */ |
| 813 | static void |
| 814 | RecordFlushAllContexts(CallbackListPtr *pcbl, |
| 815 | pointer nulldata, pointer calldata) |
| 816 | { |
| 817 | int eci; /* enabled context index */ |
| 818 | RecordContextPtr pContext; |
| 819 | |
| 820 | for (eci = 0; eci < numEnabledContexts; eci++) { |
| 821 | pContext = ppAllContexts[eci]; |
| 822 | |
| 823 | /* In most cases we leave it to RecordFlushReplyBuffer to make |
| 824 | * this check, but this function could be called very often, so we |
| 825 | * check before calling hoping to save the function call cost |
| 826 | * most of the time. |
| 827 | */ |
| 828 | if (pContext->numBufBytes) |
| 829 | RecordFlushReplyBuffer(ppAllContexts[eci], NULL, 0, NULL, 0); |
| 830 | } |
| 831 | } /* RecordFlushAllContexts */ |
| 832 | |
| 833 | /* RecordInstallHooks |
| 834 | * |
| 835 | * Arguments: |
| 836 | * pRCAP is an RCAP on an enabled or being-enabled context. |
| 837 | * oneclient can be zero or the resource ID mask identifying a client. |
| 838 | * |
| 839 | * Returns: BadAlloc if a memory allocation error occurred, else Success. |
| 840 | * |
| 841 | * Side Effects: |
| 842 | * Recording hooks needed by RCAP are installed. |
| 843 | * If oneclient is zero, recording hooks needed for all clients and |
| 844 | * protocol on the RCAP are installed. If oneclient is non-zero, |
| 845 | * only those hooks needed for the specified client are installed. |
| 846 | * |
| 847 | * Client requestVectors may be altered. numEnabledRCAPs will be |
| 848 | * incremented if oneclient == 0. Callbacks may be added to |
| 849 | * various callback lists. |
| 850 | */ |
| 851 | static int |
| 852 | RecordInstallHooks(RecordClientsAndProtocolPtr pRCAP, XID oneclient) |
| 853 | { |
| 854 | int i = 0; |
| 855 | XID client; |
| 856 | |
| 857 | if (oneclient) |
| 858 | client = oneclient; |
| 859 | else |
| 860 | client = pRCAP->numClients ? pRCAP->pClientIDs[i++] : 0; |
| 861 | |
| 862 | while (client) { |
| 863 | if (client != XRecordFutureClients) { |
| 864 | if (pRCAP->pRequestMajorOpSet) { |
| 865 | RecordSetIteratePtr pIter = NULL; |
| 866 | RecordSetInterval interval; |
| 867 | ClientPtr pClient = clients[CLIENT_ID(client)]; |
| 868 | |
| 869 | if (pClient && !RecordClientPrivate(pClient)) { |
| 870 | RecordClientPrivatePtr pClientPriv; |
| 871 | |
| 872 | /* no Record proc vector; allocate one */ |
| 873 | pClientPriv = (RecordClientPrivatePtr) |
| 874 | malloc(sizeof(RecordClientPrivateRec)); |
| 875 | if (!pClientPriv) |
| 876 | return BadAlloc; |
| 877 | /* copy old proc vector to new */ |
| 878 | memcpy(pClientPriv->recordVector, pClient->requestVector, |
| 879 | sizeof(pClientPriv->recordVector)); |
| 880 | pClientPriv->originalVector = pClient->requestVector; |
| 881 | dixSetPrivate(&pClient->devPrivates, |
| 882 | RecordClientPrivateKey, pClientPriv); |
| 883 | pClient->requestVector = pClientPriv->recordVector; |
| 884 | } |
| 885 | while ((pIter = RecordIterateSet(pRCAP->pRequestMajorOpSet, |
| 886 | pIter, &interval))) { |
| 887 | unsigned int j; |
| 888 | |
| 889 | for (j = interval.first; j <= interval.last; j++) |
| 890 | pClient->requestVector[j] = RecordARequest; |
| 891 | } |
| 892 | } |
| 893 | } |
| 894 | if (oneclient) |
| 895 | client = 0; |
| 896 | else |
| 897 | client = (i < pRCAP->numClients) ? pRCAP->pClientIDs[i++] : 0; |
| 898 | } |
| 899 | |
| 900 | assert(numEnabledRCAPs >= 0); |
| 901 | if (!oneclient && ++numEnabledRCAPs == 1) { /* we're enabling the first context */ |
| 902 | if (!AddCallback(&EventCallback, RecordADeliveredEventOrError, NULL)) |
| 903 | return BadAlloc; |
| 904 | if (!AddCallback(&DeviceEventCallback, RecordADeviceEvent, NULL)) |
| 905 | return BadAlloc; |
| 906 | if (!AddCallback(&ReplyCallback, RecordAReply, NULL)) |
| 907 | return BadAlloc; |
| 908 | if (!AddCallback(&FlushCallback, RecordFlushAllContexts, NULL)) |
| 909 | return BadAlloc; |
| 910 | /* Alternate context flushing scheme: delete the line above |
| 911 | * and call RegisterBlockAndWakeupHandlers here passing |
| 912 | * RecordFlushAllContexts. Is this any better? |
| 913 | */ |
| 914 | } |
| 915 | return Success; |
| 916 | } /* RecordInstallHooks */ |
| 917 | |
| 918 | /* RecordUninstallHooks |
| 919 | * |
| 920 | * Arguments: |
| 921 | * pRCAP is an RCAP on an enabled or being-disabled context. |
| 922 | * oneclient can be zero or the resource ID mask identifying a client. |
| 923 | * |
| 924 | * Returns: nothing. |
| 925 | * |
| 926 | * Side Effects: |
| 927 | * Recording hooks needed by RCAP may be uninstalled. |
| 928 | * If oneclient is zero, recording hooks needed for all clients and |
| 929 | * protocol on the RCAP may be uninstalled. If oneclient is non-zero, |
| 930 | * only those hooks needed for the specified client may be uninstalled. |
| 931 | * |
| 932 | * Client requestVectors may be altered. numEnabledRCAPs will be |
| 933 | * decremented if oneclient == 0. Callbacks may be deleted from |
| 934 | * various callback lists. |
| 935 | */ |
| 936 | static void |
| 937 | RecordUninstallHooks(RecordClientsAndProtocolPtr pRCAP, XID oneclient) |
| 938 | { |
| 939 | int i = 0; |
| 940 | XID client; |
| 941 | |
| 942 | if (oneclient) |
| 943 | client = oneclient; |
| 944 | else |
| 945 | client = pRCAP->numClients ? pRCAP->pClientIDs[i++] : 0; |
| 946 | |
| 947 | while (client) { |
| 948 | if (client != XRecordFutureClients) { |
| 949 | if (pRCAP->pRequestMajorOpSet) { |
| 950 | ClientPtr pClient = clients[CLIENT_ID(client)]; |
| 951 | int c; |
| 952 | Bool otherRCAPwantsProcVector = FALSE; |
| 953 | RecordClientPrivatePtr pClientPriv = NULL; |
| 954 | |
| 955 | assert(pClient); |
| 956 | pClientPriv = RecordClientPrivate(pClient); |
| 957 | assert(pClientPriv); |
| 958 | memcpy(pClientPriv->recordVector, pClientPriv->originalVector, |
| 959 | sizeof(pClientPriv->recordVector)); |
| 960 | |
| 961 | for (c = 0; c < numEnabledContexts; c++) { |
| 962 | RecordClientsAndProtocolPtr pOtherRCAP; |
| 963 | RecordContextPtr pContext = ppAllContexts[c]; |
| 964 | |
| 965 | if (pContext == pRCAP->pContext) |
| 966 | continue; |
| 967 | pOtherRCAP = RecordFindClientOnContext(pContext, client, |
| 968 | NULL); |
| 969 | if (pOtherRCAP && pOtherRCAP->pRequestMajorOpSet) { |
| 970 | RecordSetIteratePtr pIter = NULL; |
| 971 | RecordSetInterval interval; |
| 972 | |
| 973 | otherRCAPwantsProcVector = TRUE; |
| 974 | while ((pIter = |
| 975 | RecordIterateSet(pOtherRCAP->pRequestMajorOpSet, |
| 976 | pIter, &interval))) { |
| 977 | unsigned int j; |
| 978 | |
| 979 | for (j = interval.first; j <= interval.last; j++) |
| 980 | pClient->requestVector[j] = RecordARequest; |
| 981 | } |
| 982 | } |
| 983 | } |
| 984 | if (!otherRCAPwantsProcVector) { /* nobody needs it, so free it */ |
| 985 | pClient->requestVector = pClientPriv->originalVector; |
| 986 | dixSetPrivate(&pClient->devPrivates, |
| 987 | RecordClientPrivateKey, NULL); |
| 988 | free(pClientPriv); |
| 989 | } |
| 990 | } /* end if this RCAP specifies any requests */ |
| 991 | } /* end if not future clients */ |
| 992 | if (oneclient) |
| 993 | client = 0; |
| 994 | else |
| 995 | client = (i < pRCAP->numClients) ? pRCAP->pClientIDs[i++] : 0; |
| 996 | } |
| 997 | |
| 998 | assert(numEnabledRCAPs >= 1); |
| 999 | if (!oneclient && --numEnabledRCAPs == 0) { /* we're disabling the last context */ |
| 1000 | DeleteCallback(&EventCallback, RecordADeliveredEventOrError, NULL); |
| 1001 | DeleteCallback(&DeviceEventCallback, RecordADeviceEvent, NULL); |
| 1002 | DeleteCallback(&ReplyCallback, RecordAReply, NULL); |
| 1003 | DeleteCallback(&FlushCallback, RecordFlushAllContexts, NULL); |
| 1004 | /* Alternate context flushing scheme: delete the line above |
| 1005 | * and call RemoveBlockAndWakeupHandlers here passing |
| 1006 | * RecordFlushAllContexts. Is this any better? |
| 1007 | */ |
| 1008 | /* Having deleted the callback, call it one last time. -gildea */ |
| 1009 | RecordFlushAllContexts(&FlushCallback, NULL, NULL); |
| 1010 | } |
| 1011 | } /* RecordUninstallHooks */ |
| 1012 | |
| 1013 | /* RecordDeleteClientFromRCAP |
| 1014 | * |
| 1015 | * Arguments: |
| 1016 | * pRCAP is an RCAP to delete the client from. |
| 1017 | * position is the index into the array pRCAP->pClientIDs of the |
| 1018 | * client to delete. |
| 1019 | * |
| 1020 | * Returns: nothing. |
| 1021 | * |
| 1022 | * Side Effects: |
| 1023 | * Recording hooks needed by client will be uninstalled if the context |
| 1024 | * is enabled. The designated client will be removed from the |
| 1025 | * pRCAP->pClientIDs array. If it was the only client on the RCAP, |
| 1026 | * the RCAP is removed from the context and freed. (Invariant: RCAPs |
| 1027 | * have at least one client.) |
| 1028 | */ |
| 1029 | static void |
| 1030 | RecordDeleteClientFromRCAP(RecordClientsAndProtocolPtr pRCAP, int position) |
| 1031 | { |
| 1032 | if (pRCAP->pContext->pRecordingClient) |
| 1033 | RecordUninstallHooks(pRCAP, pRCAP->pClientIDs[position]); |
| 1034 | if (position != pRCAP->numClients - 1) |
| 1035 | pRCAP->pClientIDs[position] = pRCAP->pClientIDs[pRCAP->numClients - 1]; |
| 1036 | if (--pRCAP->numClients == 0) { /* no more clients; remove RCAP from context's list */ |
| 1037 | RecordContextPtr pContext = pRCAP->pContext; |
| 1038 | |
| 1039 | if (pContext->pRecordingClient) |
| 1040 | RecordUninstallHooks(pRCAP, 0); |
| 1041 | if (pContext->pListOfRCAP == pRCAP) |
| 1042 | pContext->pListOfRCAP = pRCAP->pNextRCAP; |
| 1043 | else { |
| 1044 | RecordClientsAndProtocolPtr prevRCAP; |
| 1045 | |
| 1046 | for (prevRCAP = pContext->pListOfRCAP; |
| 1047 | prevRCAP->pNextRCAP != pRCAP; prevRCAP = prevRCAP->pNextRCAP); |
| 1048 | prevRCAP->pNextRCAP = pRCAP->pNextRCAP; |
| 1049 | } |
| 1050 | /* free the RCAP */ |
| 1051 | if (pRCAP->clientIDsSeparatelyAllocated) |
| 1052 | free(pRCAP->pClientIDs); |
| 1053 | free(pRCAP); |
| 1054 | } |
| 1055 | } /* RecordDeleteClientFromRCAP */ |
| 1056 | |
| 1057 | /* RecordAddClientToRCAP |
| 1058 | * |
| 1059 | * Arguments: |
| 1060 | * pRCAP is an RCAP to add the client to. |
| 1061 | * clientspec is the resource ID mask identifying a client, or |
| 1062 | * XRecordFutureClients. |
| 1063 | * |
| 1064 | * Returns: nothing. |
| 1065 | * |
| 1066 | * Side Effects: |
| 1067 | * Recording hooks needed by client will be installed if the context |
| 1068 | * is enabled. The designated client will be added to the |
| 1069 | * pRCAP->pClientIDs array, which may be realloced. |
| 1070 | * pRCAP->clientIDsSeparatelyAllocated may be set to 1 if there |
| 1071 | * is no more room to hold clients internal to the RCAP. |
| 1072 | */ |
| 1073 | static void |
| 1074 | RecordAddClientToRCAP(RecordClientsAndProtocolPtr pRCAP, XID clientspec) |
| 1075 | { |
| 1076 | if (pRCAP->numClients == pRCAP->sizeClients) { |
| 1077 | if (pRCAP->clientIDsSeparatelyAllocated) { |
| 1078 | XID *pNewIDs = (XID *) realloc(pRCAP->pClientIDs, |
| 1079 | (pRCAP->sizeClients + |
| 1080 | CLIENT_ARRAY_GROWTH_INCREMENT) * |
| 1081 | sizeof(XID)); |
| 1082 | if (!pNewIDs) |
| 1083 | return; |
| 1084 | pRCAP->pClientIDs = pNewIDs; |
| 1085 | pRCAP->sizeClients += CLIENT_ARRAY_GROWTH_INCREMENT; |
| 1086 | } |
| 1087 | else { |
| 1088 | XID *pNewIDs = (XID *) malloc((pRCAP->sizeClients + |
| 1089 | CLIENT_ARRAY_GROWTH_INCREMENT) * |
| 1090 | sizeof(XID)); |
| 1091 | if (!pNewIDs) |
| 1092 | return; |
| 1093 | memcpy(pNewIDs, pRCAP->pClientIDs, pRCAP->numClients * sizeof(XID)); |
| 1094 | pRCAP->pClientIDs = pNewIDs; |
| 1095 | pRCAP->sizeClients += CLIENT_ARRAY_GROWTH_INCREMENT; |
| 1096 | pRCAP->clientIDsSeparatelyAllocated = 1; |
| 1097 | } |
| 1098 | } |
| 1099 | pRCAP->pClientIDs[pRCAP->numClients++] = clientspec; |
| 1100 | if (pRCAP->pContext->pRecordingClient) |
| 1101 | RecordInstallHooks(pRCAP, clientspec); |
| 1102 | } /* RecordDeleteClientFromRCAP */ |
| 1103 | |
| 1104 | /* RecordDeleteClientFromContext |
| 1105 | * |
| 1106 | * Arguments: |
| 1107 | * pContext is the context to delete from. |
| 1108 | * clientspec is the resource ID mask identifying a client, or |
| 1109 | * XRecordFutureClients. |
| 1110 | * |
| 1111 | * Returns: nothing. |
| 1112 | * |
| 1113 | * Side Effects: |
| 1114 | * If clientspec is on any RCAP of the context, it is deleted from that |
| 1115 | * RCAP. (A given clientspec can only be on one RCAP of a context.) |
| 1116 | */ |
| 1117 | static void |
| 1118 | RecordDeleteClientFromContext(RecordContextPtr pContext, XID clientspec) |
| 1119 | { |
| 1120 | RecordClientsAndProtocolPtr pRCAP; |
| 1121 | int position; |
| 1122 | |
| 1123 | if ((pRCAP = RecordFindClientOnContext(pContext, clientspec, &position))) |
| 1124 | RecordDeleteClientFromRCAP(pRCAP, position); |
| 1125 | } /* RecordDeleteClientFromContext */ |
| 1126 | |
| 1127 | /* RecordSanityCheckClientSpecifiers |
| 1128 | * |
| 1129 | * Arguments: |
| 1130 | * clientspecs is an array of alleged CLIENTSPECs passed by the client. |
| 1131 | * nspecs is the number of elements in clientspecs. |
| 1132 | * errorspec, if non-zero, is the resource id base of a client that |
| 1133 | * must not appear in clienspecs. |
| 1134 | * |
| 1135 | * Returns: BadMatch if any of the clientspecs are invalid, else Success. |
| 1136 | * |
| 1137 | * Side Effects: none. |
| 1138 | */ |
| 1139 | static int |
| 1140 | RecordSanityCheckClientSpecifiers(ClientPtr client, XID *clientspecs, |
| 1141 | int nspecs, XID errorspec) |
| 1142 | { |
| 1143 | int i; |
| 1144 | int clientIndex; |
| 1145 | int rc; |
| 1146 | pointer value; |
| 1147 | |
| 1148 | for (i = 0; i < nspecs; i++) { |
| 1149 | if (clientspecs[i] == XRecordCurrentClients || |
| 1150 | clientspecs[i] == XRecordFutureClients || |
| 1151 | clientspecs[i] == XRecordAllClients) |
| 1152 | continue; |
| 1153 | if (errorspec && (CLIENT_BITS(clientspecs[i]) == errorspec)) |
| 1154 | return BadMatch; |
| 1155 | clientIndex = CLIENT_ID(clientspecs[i]); |
| 1156 | if (clientIndex && clients[clientIndex] && |
| 1157 | clients[clientIndex]->clientState == ClientStateRunning) { |
| 1158 | if (clientspecs[i] == clients[clientIndex]->clientAsMask) |
| 1159 | continue; |
| 1160 | rc = dixLookupResourceByClass(&value, clientspecs[i], RC_ANY, |
| 1161 | client, DixGetAttrAccess); |
| 1162 | if (rc != Success) |
| 1163 | return rc; |
| 1164 | } |
| 1165 | else |
| 1166 | return BadMatch; |
| 1167 | } |
| 1168 | return Success; |
| 1169 | } /* RecordSanityCheckClientSpecifiers */ |
| 1170 | |
| 1171 | /* RecordCanonicalizeClientSpecifiers |
| 1172 | * |
| 1173 | * Arguments: |
| 1174 | * pClientspecs is an array of CLIENTSPECs that have been sanity |
| 1175 | * checked. |
| 1176 | * pNumClientspecs is a pointer to the number of elements in pClientspecs. |
| 1177 | * excludespec, if non-zero, is the resource id base of a client that |
| 1178 | * should not be included in the expansion of XRecordAllClients or |
| 1179 | * XRecordCurrentClients. |
| 1180 | * |
| 1181 | * Returns: |
| 1182 | * A pointer to an array of CLIENTSPECs that is the same as the |
| 1183 | * passed array with the following modifications: |
| 1184 | * - all but the client id bits of resource IDs are stripped off. |
| 1185 | * - duplicates removed. |
| 1186 | * - XRecordAllClients expanded to a list of all currently connected |
| 1187 | * clients + XRecordFutureClients - excludespec (if non-zero) |
| 1188 | * - XRecordCurrentClients expanded to a list of all currently |
| 1189 | * connected clients - excludespec (if non-zero) |
| 1190 | * The returned array may be the passed array modified in place, or |
| 1191 | * it may be an malloc'ed array. The caller should keep a pointer to the |
| 1192 | * original array and free the returned array if it is different. |
| 1193 | * |
| 1194 | * *pNumClientspecs is set to the number of elements in the returned |
| 1195 | * array. |
| 1196 | * |
| 1197 | * Side Effects: |
| 1198 | * pClientspecs may be modified in place. |
| 1199 | */ |
| 1200 | static XID * |
| 1201 | RecordCanonicalizeClientSpecifiers(XID *pClientspecs, int *pNumClientspecs, |
| 1202 | XID excludespec) |
| 1203 | { |
| 1204 | int i; |
| 1205 | int numClients = *pNumClientspecs; |
| 1206 | |
| 1207 | /* first pass strips off the resource index bits, leaving just the |
| 1208 | * client id bits. This makes searching for a particular client simpler |
| 1209 | * (and faster.) |
| 1210 | */ |
| 1211 | for (i = 0; i < numClients; i++) { |
| 1212 | XID cs = pClientspecs[i]; |
| 1213 | |
| 1214 | if (cs > XRecordAllClients) |
| 1215 | pClientspecs[i] = CLIENT_BITS(cs); |
| 1216 | } |
| 1217 | |
| 1218 | for (i = 0; i < numClients; i++) { |
| 1219 | if (pClientspecs[i] == XRecordAllClients || pClientspecs[i] == XRecordCurrentClients) { /* expand All/Current */ |
| 1220 | int j, nc; |
| 1221 | XID *pCanon = (XID *) malloc(sizeof(XID) * (currentMaxClients + 1)); |
| 1222 | |
| 1223 | if (!pCanon) |
| 1224 | return NULL; |
| 1225 | for (nc = 0, j = 1; j < currentMaxClients; j++) { |
| 1226 | ClientPtr client = clients[j]; |
| 1227 | |
| 1228 | if (client != NullClient && |
| 1229 | client->clientState == ClientStateRunning && |
| 1230 | client->clientAsMask != excludespec) { |
| 1231 | pCanon[nc++] = client->clientAsMask; |
| 1232 | } |
| 1233 | } |
| 1234 | if (pClientspecs[i] == XRecordAllClients) |
| 1235 | pCanon[nc++] = XRecordFutureClients; |
| 1236 | *pNumClientspecs = nc; |
| 1237 | return pCanon; |
| 1238 | } |
| 1239 | else { /* not All or Current */ |
| 1240 | |
| 1241 | int j; |
| 1242 | |
| 1243 | for (j = i + 1; j < numClients;) { |
| 1244 | if (pClientspecs[i] == pClientspecs[j]) { |
| 1245 | pClientspecs[j] = pClientspecs[--numClients]; |
| 1246 | } |
| 1247 | else |
| 1248 | j++; |
| 1249 | } |
| 1250 | } |
| 1251 | } /* end for each clientspec */ |
| 1252 | *pNumClientspecs = numClients; |
| 1253 | return pClientspecs; |
| 1254 | } /* RecordCanonicalizeClientSpecifiers */ |
| 1255 | \f |
| 1256 | /****************************************************************************/ |
| 1257 | |
| 1258 | /* stuff for RegisterClients */ |
| 1259 | |
| 1260 | /* RecordPadAlign |
| 1261 | * |
| 1262 | * Arguments: |
| 1263 | * size is the number of bytes taken by an object. |
| 1264 | * align is a byte boundary (e.g. 4, 8) |
| 1265 | * |
| 1266 | * Returns: |
| 1267 | * the number of pad bytes to add at the end of an object of the |
| 1268 | * given size so that an object placed immediately behind it will |
| 1269 | * begin on an <align>-byte boundary. |
| 1270 | * |
| 1271 | * Side Effects: none. |
| 1272 | */ |
| 1273 | static int |
| 1274 | RecordPadAlign(int size, int align) |
| 1275 | { |
| 1276 | return (align - (size & (align - 1))) & (align - 1); |
| 1277 | } /* RecordPadAlign */ |
| 1278 | |
| 1279 | /* RecordSanityCheckRegisterClients |
| 1280 | * |
| 1281 | * Arguments: |
| 1282 | * pContext is the context being registered on. |
| 1283 | * client is the client that issued a RecordCreateContext or |
| 1284 | * RecordRegisterClients request. |
| 1285 | * stuff is a pointer to the request. |
| 1286 | * |
| 1287 | * Returns: |
| 1288 | * Any one of several possible error values if any of the request |
| 1289 | * arguments are invalid. Success if everything is OK. |
| 1290 | * |
| 1291 | * Side Effects: none. |
| 1292 | */ |
| 1293 | static int |
| 1294 | RecordSanityCheckRegisterClients(RecordContextPtr pContext, ClientPtr client, |
| 1295 | xRecordRegisterClientsReq * stuff) |
| 1296 | { |
| 1297 | int err; |
| 1298 | xRecordRange *pRange; |
| 1299 | int i; |
| 1300 | XID recordingClient; |
| 1301 | |
| 1302 | if (((client->req_len << 2) - SIZEOF(xRecordRegisterClientsReq)) != |
| 1303 | 4 * stuff->nClients + SIZEOF(xRecordRange) * stuff->nRanges) |
| 1304 | return BadLength; |
| 1305 | |
| 1306 | if (stuff->elementHeader & |
| 1307 | ~(XRecordFromClientSequence | XRecordFromClientTime | |
| 1308 | XRecordFromServerTime)) { |
| 1309 | client->errorValue = stuff->elementHeader; |
| 1310 | return BadValue; |
| 1311 | } |
| 1312 | |
| 1313 | recordingClient = pContext->pRecordingClient ? |
| 1314 | pContext->pRecordingClient->clientAsMask : 0; |
| 1315 | err = RecordSanityCheckClientSpecifiers(client, (XID *) &stuff[1], |
| 1316 | stuff->nClients, recordingClient); |
| 1317 | if (err != Success) |
| 1318 | return err; |
| 1319 | |
| 1320 | pRange = (xRecordRange *) (((XID *) &stuff[1]) + stuff->nClients); |
| 1321 | for (i = 0; i < stuff->nRanges; i++, pRange++) { |
| 1322 | if (pRange->coreRequestsFirst > pRange->coreRequestsLast) { |
| 1323 | client->errorValue = pRange->coreRequestsFirst; |
| 1324 | return BadValue; |
| 1325 | } |
| 1326 | if (pRange->coreRepliesFirst > pRange->coreRepliesLast) { |
| 1327 | client->errorValue = pRange->coreRepliesFirst; |
| 1328 | return BadValue; |
| 1329 | } |
| 1330 | if ((pRange->extRequestsMajorFirst || pRange->extRequestsMajorLast) && |
| 1331 | (pRange->extRequestsMajorFirst < 128 || |
| 1332 | pRange->extRequestsMajorLast < 128 || |
| 1333 | pRange->extRequestsMajorFirst > pRange->extRequestsMajorLast)) { |
| 1334 | client->errorValue = pRange->extRequestsMajorFirst; |
| 1335 | return BadValue; |
| 1336 | } |
| 1337 | if (pRange->extRequestsMinorFirst > pRange->extRequestsMinorLast) { |
| 1338 | client->errorValue = pRange->extRequestsMinorFirst; |
| 1339 | return BadValue; |
| 1340 | } |
| 1341 | if ((pRange->extRepliesMajorFirst || pRange->extRepliesMajorLast) && |
| 1342 | (pRange->extRepliesMajorFirst < 128 || |
| 1343 | pRange->extRepliesMajorLast < 128 || |
| 1344 | pRange->extRepliesMajorFirst > pRange->extRepliesMajorLast)) { |
| 1345 | client->errorValue = pRange->extRepliesMajorFirst; |
| 1346 | return BadValue; |
| 1347 | } |
| 1348 | if (pRange->extRepliesMinorFirst > pRange->extRepliesMinorLast) { |
| 1349 | client->errorValue = pRange->extRepliesMinorFirst; |
| 1350 | return BadValue; |
| 1351 | } |
| 1352 | if ((pRange->deliveredEventsFirst || pRange->deliveredEventsLast) && |
| 1353 | (pRange->deliveredEventsFirst < 2 || |
| 1354 | pRange->deliveredEventsLast < 2 || |
| 1355 | pRange->deliveredEventsFirst > pRange->deliveredEventsLast)) { |
| 1356 | client->errorValue = pRange->deliveredEventsFirst; |
| 1357 | return BadValue; |
| 1358 | } |
| 1359 | if ((pRange->deviceEventsFirst || pRange->deviceEventsLast) && |
| 1360 | (pRange->deviceEventsFirst < 2 || |
| 1361 | pRange->deviceEventsLast < 2 || |
| 1362 | pRange->deviceEventsFirst > pRange->deviceEventsLast)) { |
| 1363 | client->errorValue = pRange->deviceEventsFirst; |
| 1364 | return BadValue; |
| 1365 | } |
| 1366 | if (pRange->errorsFirst > pRange->errorsLast) { |
| 1367 | client->errorValue = pRange->errorsFirst; |
| 1368 | return BadValue; |
| 1369 | } |
| 1370 | if (pRange->clientStarted != xFalse && pRange->clientStarted != xTrue) { |
| 1371 | client->errorValue = pRange->clientStarted; |
| 1372 | return BadValue; |
| 1373 | } |
| 1374 | if (pRange->clientDied != xFalse && pRange->clientDied != xTrue) { |
| 1375 | client->errorValue = pRange->clientDied; |
| 1376 | return BadValue; |
| 1377 | } |
| 1378 | } /* end for each range */ |
| 1379 | return Success; |
| 1380 | } /* end RecordSanityCheckRegisterClients */ |
| 1381 | |
| 1382 | /* This is a tactical structure used to gather information about all the sets |
| 1383 | * (RecordSetPtr) that need to be created for an RCAP in the process of |
| 1384 | * digesting a list of RECORDRANGEs (converting it to the internal |
| 1385 | * representation). |
| 1386 | */ |
| 1387 | typedef struct { |
| 1388 | int nintervals; /* number of intervals in following array */ |
| 1389 | RecordSetInterval *intervals; /* array of intervals for this set */ |
| 1390 | int size; /* size of intevals array; >= nintervals */ |
| 1391 | int align; /* alignment restriction for set */ |
| 1392 | int offset; /* where to store set pointer rel. to start of RCAP */ |
| 1393 | short first, last; /* if for extension, major opcode interval */ |
| 1394 | } SetInfoRec, *SetInfoPtr; |
| 1395 | |
| 1396 | #if defined(ERR) && defined(__sun) |
| 1397 | #undef ERR /* Avoid conflict with Solaris <sys/regset.h> */ |
| 1398 | #endif |
| 1399 | |
| 1400 | /* These constant are used to index into an array of SetInfoRec. */ |
| 1401 | enum { REQ, /* set info for requests */ |
| 1402 | REP, /* set info for replies */ |
| 1403 | ERR, /* set info for errors */ |
| 1404 | DEV, /* set info for device events */ |
| 1405 | DLEV, /* set info for delivered events */ |
| 1406 | PREDEFSETS |
| 1407 | }; /* number of predefined array entries */ |
| 1408 | |
| 1409 | /* RecordAllocIntervals |
| 1410 | * |
| 1411 | * Arguments: |
| 1412 | * psi is a pointer to a SetInfoRec whose intervals pointer is NULL. |
| 1413 | * nIntervals is the desired size of the intervals array. |
| 1414 | * |
| 1415 | * Returns: BadAlloc if a memory allocation error occurred, else Success. |
| 1416 | * |
| 1417 | * Side Effects: |
| 1418 | * If Success is returned, psi->intervals is a pointer to size |
| 1419 | * RecordSetIntervals, all zeroed, and psi->size is set to size. |
| 1420 | */ |
| 1421 | static int |
| 1422 | RecordAllocIntervals(SetInfoPtr psi, int nIntervals) |
| 1423 | { |
| 1424 | assert(!psi->intervals); |
| 1425 | psi->intervals = (RecordSetInterval *) |
| 1426 | malloc(nIntervals * sizeof(RecordSetInterval)); |
| 1427 | if (!psi->intervals) |
| 1428 | return BadAlloc; |
| 1429 | memset(psi->intervals, 0, nIntervals * sizeof(RecordSetInterval)); |
| 1430 | psi->size = nIntervals; |
| 1431 | return Success; |
| 1432 | } /* end RecordAllocIntervals */ |
| 1433 | |
| 1434 | /* RecordConvertRangesToIntervals |
| 1435 | * |
| 1436 | * Arguments: |
| 1437 | * psi is a pointer to the SetInfoRec we are building. |
| 1438 | * pRanges is an array of xRecordRanges. |
| 1439 | * nRanges is the number of elements in pRanges. |
| 1440 | * byteoffset is the offset from the start of an xRecordRange of the |
| 1441 | * two bytes (1 for first, 1 for last) we are interested in. |
| 1442 | * pExtSetInfo, if non-NULL, indicates that the two bytes mentioned |
| 1443 | * above are followed by four bytes (2 for first, 2 for last) |
| 1444 | * representing a minor opcode range, and this information should be |
| 1445 | * stored in one of the SetInfoRecs starting at pExtSetInfo. |
| 1446 | * pnExtSetInfo is the number of elements in the pExtSetInfo array. |
| 1447 | * |
| 1448 | * Returns: BadAlloc if a memory allocation error occurred, else Success. |
| 1449 | * |
| 1450 | * Side Effects: |
| 1451 | * The slice of pRanges indicated by byteoffset is stored in psi. |
| 1452 | * If pExtSetInfo is non-NULL, minor opcode intervals are stored |
| 1453 | * in an existing SetInfoRec if the major opcode interval matches, else |
| 1454 | * they are stored in a new SetInfoRec, and *pnExtSetInfo is |
| 1455 | * increased accordingly. |
| 1456 | */ |
| 1457 | static int |
| 1458 | RecordConvertRangesToIntervals(SetInfoPtr psi, |
| 1459 | xRecordRange * pRanges, |
| 1460 | int nRanges, |
| 1461 | int byteoffset, |
| 1462 | SetInfoPtr pExtSetInfo, int *pnExtSetInfo) |
| 1463 | { |
| 1464 | int i; |
| 1465 | CARD8 *pCARD8; |
| 1466 | int first, last; |
| 1467 | int err; |
| 1468 | |
| 1469 | for (i = 0; i < nRanges; i++, pRanges++) { |
| 1470 | pCARD8 = ((CARD8 *) pRanges) + byteoffset; |
| 1471 | first = pCARD8[0]; |
| 1472 | last = pCARD8[1]; |
| 1473 | if (first || last) { |
| 1474 | if (!psi->intervals) { |
| 1475 | err = RecordAllocIntervals(psi, 2 * (nRanges - i)); |
| 1476 | if (err != Success) |
| 1477 | return err; |
| 1478 | } |
| 1479 | psi->intervals[psi->nintervals].first = first; |
| 1480 | psi->intervals[psi->nintervals].last = last; |
| 1481 | psi->nintervals++; |
| 1482 | assert(psi->nintervals <= psi->size); |
| 1483 | if (pExtSetInfo) { |
| 1484 | SetInfoPtr pesi = pExtSetInfo; |
| 1485 | CARD16 *pCARD16 = (CARD16 *) (pCARD8 + 2); |
| 1486 | int j; |
| 1487 | |
| 1488 | for (j = 0; j < *pnExtSetInfo; j++, pesi++) { |
| 1489 | if ((first == pesi->first) && (last == pesi->last)) |
| 1490 | break; |
| 1491 | } |
| 1492 | if (j == *pnExtSetInfo) { |
| 1493 | err = RecordAllocIntervals(pesi, 2 * (nRanges - i)); |
| 1494 | if (err != Success) |
| 1495 | return err; |
| 1496 | pesi->first = first; |
| 1497 | pesi->last = last; |
| 1498 | (*pnExtSetInfo)++; |
| 1499 | } |
| 1500 | pesi->intervals[pesi->nintervals].first = pCARD16[0]; |
| 1501 | pesi->intervals[pesi->nintervals].last = pCARD16[1]; |
| 1502 | pesi->nintervals++; |
| 1503 | assert(pesi->nintervals <= pesi->size); |
| 1504 | } |
| 1505 | } |
| 1506 | } |
| 1507 | return Success; |
| 1508 | } /* end RecordConvertRangesToIntervals */ |
| 1509 | |
| 1510 | #define offset_of(_structure, _field) \ |
| 1511 | ((char *)(& (_structure . _field)) - (char *)(&_structure)) |
| 1512 | |
| 1513 | /* RecordRegisterClients |
| 1514 | * |
| 1515 | * Arguments: |
| 1516 | * pContext is the context on which to register the clients. |
| 1517 | * client is the client that issued the RecordCreateContext or |
| 1518 | * RecordRegisterClients request. |
| 1519 | * stuff is a pointer to the request. |
| 1520 | * |
| 1521 | * Returns: |
| 1522 | * Any one of several possible error values defined by the protocol. |
| 1523 | * Success if everything is OK. |
| 1524 | * |
| 1525 | * Side Effects: |
| 1526 | * If different element headers are specified, the context is flushed. |
| 1527 | * If any of the specified clients are already registered on the |
| 1528 | * context, they are first unregistered. A new RCAP is created to |
| 1529 | * hold the specified protocol and clients, and it is linked onto the |
| 1530 | * context. If the context is enabled, appropriate hooks are installed |
| 1531 | * to record the new clients and protocol. |
| 1532 | */ |
| 1533 | static int |
| 1534 | RecordRegisterClients(RecordContextPtr pContext, ClientPtr client, |
| 1535 | xRecordRegisterClientsReq * stuff) |
| 1536 | { |
| 1537 | int err; |
| 1538 | int i; |
| 1539 | SetInfoPtr si; |
| 1540 | int maxSets; |
| 1541 | int nExtReqSets = 0; |
| 1542 | int nExtRepSets = 0; |
| 1543 | int extReqSetsOffset = 0; |
| 1544 | int extRepSetsOffset = 0; |
| 1545 | SetInfoPtr pExtReqSets, pExtRepSets; |
| 1546 | int clientListOffset; |
| 1547 | XID *pCanonClients; |
| 1548 | int clientStarted = 0, clientDied = 0; |
| 1549 | xRecordRange *pRanges, rr; |
| 1550 | int nClients; |
| 1551 | int sizeClients; |
| 1552 | int totRCAPsize; |
| 1553 | RecordClientsAndProtocolPtr pRCAP; |
| 1554 | int pad; |
| 1555 | XID recordingClient; |
| 1556 | |
| 1557 | /* do all sanity checking up front */ |
| 1558 | |
| 1559 | err = RecordSanityCheckRegisterClients(pContext, client, stuff); |
| 1560 | if (err != Success) |
| 1561 | return err; |
| 1562 | |
| 1563 | /* if element headers changed, flush buffer */ |
| 1564 | |
| 1565 | if (pContext->elemHeaders != stuff->elementHeader) { |
| 1566 | RecordFlushReplyBuffer(pContext, NULL, 0, NULL, 0); |
| 1567 | pContext->elemHeaders = stuff->elementHeader; |
| 1568 | } |
| 1569 | |
| 1570 | nClients = stuff->nClients; |
| 1571 | if (!nClients) |
| 1572 | /* if empty clients list, we're done. */ |
| 1573 | return Success; |
| 1574 | |
| 1575 | recordingClient = pContext->pRecordingClient ? |
| 1576 | pContext->pRecordingClient->clientAsMask : 0; |
| 1577 | pCanonClients = RecordCanonicalizeClientSpecifiers((XID *) &stuff[1], |
| 1578 | &nClients, |
| 1579 | recordingClient); |
| 1580 | if (!pCanonClients) |
| 1581 | return BadAlloc; |
| 1582 | |
| 1583 | /* We may have to create as many as one set for each "predefined" |
| 1584 | * protocol types, plus one per range for extension reuests, plus one per |
| 1585 | * range for extension replies. |
| 1586 | */ |
| 1587 | maxSets = PREDEFSETS + 2 * stuff->nRanges; |
| 1588 | si = (SetInfoPtr) malloc(sizeof(SetInfoRec) * maxSets); |
| 1589 | if (!si) { |
| 1590 | err = BadAlloc; |
| 1591 | goto bailout; |
| 1592 | } |
| 1593 | memset(si, 0, sizeof(SetInfoRec) * maxSets); |
| 1594 | |
| 1595 | /* theoretically you must do this because NULL may not be all-bits-zero */ |
| 1596 | for (i = 0; i < maxSets; i++) |
| 1597 | si[i].intervals = NULL; |
| 1598 | |
| 1599 | pExtReqSets = si + PREDEFSETS; |
| 1600 | pExtRepSets = pExtReqSets + stuff->nRanges; |
| 1601 | |
| 1602 | pRanges = (xRecordRange *) (((XID *) &stuff[1]) + stuff->nClients); |
| 1603 | |
| 1604 | err = RecordConvertRangesToIntervals(&si[REQ], pRanges, stuff->nRanges, |
| 1605 | offset_of(rr, coreRequestsFirst), NULL, |
| 1606 | NULL); |
| 1607 | if (err != Success) |
| 1608 | goto bailout; |
| 1609 | |
| 1610 | err = RecordConvertRangesToIntervals(&si[REQ], pRanges, stuff->nRanges, |
| 1611 | offset_of(rr, extRequestsMajorFirst), |
| 1612 | pExtReqSets, &nExtReqSets); |
| 1613 | if (err != Success) |
| 1614 | goto bailout; |
| 1615 | |
| 1616 | err = RecordConvertRangesToIntervals(&si[REP], pRanges, stuff->nRanges, |
| 1617 | offset_of(rr, coreRepliesFirst), NULL, |
| 1618 | NULL); |
| 1619 | if (err != Success) |
| 1620 | goto bailout; |
| 1621 | |
| 1622 | err = RecordConvertRangesToIntervals(&si[REP], pRanges, stuff->nRanges, |
| 1623 | offset_of(rr, extRepliesMajorFirst), |
| 1624 | pExtRepSets, &nExtRepSets); |
| 1625 | if (err != Success) |
| 1626 | goto bailout; |
| 1627 | |
| 1628 | err = RecordConvertRangesToIntervals(&si[ERR], pRanges, stuff->nRanges, |
| 1629 | offset_of(rr, errorsFirst), NULL, |
| 1630 | NULL); |
| 1631 | if (err != Success) |
| 1632 | goto bailout; |
| 1633 | |
| 1634 | err = RecordConvertRangesToIntervals(&si[DLEV], pRanges, stuff->nRanges, |
| 1635 | offset_of(rr, deliveredEventsFirst), |
| 1636 | NULL, NULL); |
| 1637 | if (err != Success) |
| 1638 | goto bailout; |
| 1639 | |
| 1640 | err = RecordConvertRangesToIntervals(&si[DEV], pRanges, stuff->nRanges, |
| 1641 | offset_of(rr, deviceEventsFirst), NULL, |
| 1642 | NULL); |
| 1643 | if (err != Success) |
| 1644 | goto bailout; |
| 1645 | |
| 1646 | /* collect client-started and client-died */ |
| 1647 | |
| 1648 | for (i = 0; i < stuff->nRanges; i++) { |
| 1649 | if (pRanges[i].clientStarted) |
| 1650 | clientStarted = TRUE; |
| 1651 | if (pRanges[i].clientDied) |
| 1652 | clientDied = TRUE; |
| 1653 | } |
| 1654 | |
| 1655 | /* We now have all the information collected to create all the sets, |
| 1656 | * and we can compute the total memory required for the RCAP. |
| 1657 | */ |
| 1658 | |
| 1659 | totRCAPsize = sizeof(RecordClientsAndProtocolRec); |
| 1660 | |
| 1661 | /* leave a little room to grow before forcing a separate allocation */ |
| 1662 | sizeClients = nClients + CLIENT_ARRAY_GROWTH_INCREMENT; |
| 1663 | pad = RecordPadAlign(totRCAPsize, sizeof(XID)); |
| 1664 | clientListOffset = totRCAPsize + pad; |
| 1665 | totRCAPsize += pad + sizeClients * sizeof(XID); |
| 1666 | |
| 1667 | if (nExtReqSets) { |
| 1668 | pad = RecordPadAlign(totRCAPsize, sizeof(RecordSetPtr)); |
| 1669 | extReqSetsOffset = totRCAPsize + pad; |
| 1670 | totRCAPsize += pad + (nExtReqSets + 1) * sizeof(RecordMinorOpRec); |
| 1671 | } |
| 1672 | if (nExtRepSets) { |
| 1673 | pad = RecordPadAlign(totRCAPsize, sizeof(RecordSetPtr)); |
| 1674 | extRepSetsOffset = totRCAPsize + pad; |
| 1675 | totRCAPsize += pad + (nExtRepSets + 1) * sizeof(RecordMinorOpRec); |
| 1676 | } |
| 1677 | |
| 1678 | for (i = 0; i < maxSets; i++) { |
| 1679 | if (si[i].nintervals) { |
| 1680 | si[i].size = |
| 1681 | RecordSetMemoryRequirements(si[i].intervals, si[i].nintervals, |
| 1682 | &si[i].align); |
| 1683 | pad = RecordPadAlign(totRCAPsize, si[i].align); |
| 1684 | si[i].offset = pad + totRCAPsize; |
| 1685 | totRCAPsize += pad + si[i].size; |
| 1686 | } |
| 1687 | } |
| 1688 | |
| 1689 | /* allocate memory for the whole RCAP */ |
| 1690 | |
| 1691 | pRCAP = (RecordClientsAndProtocolPtr) malloc(totRCAPsize); |
| 1692 | if (!pRCAP) { |
| 1693 | err = BadAlloc; |
| 1694 | goto bailout; |
| 1695 | } |
| 1696 | |
| 1697 | /* fill in the RCAP */ |
| 1698 | |
| 1699 | pRCAP->pContext = pContext; |
| 1700 | pRCAP->pClientIDs = (XID *) ((char *) pRCAP + clientListOffset); |
| 1701 | pRCAP->numClients = nClients; |
| 1702 | pRCAP->sizeClients = sizeClients; |
| 1703 | pRCAP->clientIDsSeparatelyAllocated = 0; |
| 1704 | for (i = 0; i < nClients; i++) { |
| 1705 | RecordDeleteClientFromContext(pContext, pCanonClients[i]); |
| 1706 | pRCAP->pClientIDs[i] = pCanonClients[i]; |
| 1707 | } |
| 1708 | |
| 1709 | /* create all the sets */ |
| 1710 | |
| 1711 | if (si[REQ].intervals) { |
| 1712 | pRCAP->pRequestMajorOpSet = |
| 1713 | RecordCreateSet(si[REQ].intervals, si[REQ].nintervals, |
| 1714 | (RecordSetPtr) ((char *) pRCAP + si[REQ].offset), |
| 1715 | si[REQ].size); |
| 1716 | } |
| 1717 | else |
| 1718 | pRCAP->pRequestMajorOpSet = NULL; |
| 1719 | |
| 1720 | if (si[REP].intervals) { |
| 1721 | pRCAP->pReplyMajorOpSet = |
| 1722 | RecordCreateSet(si[REP].intervals, si[REP].nintervals, |
| 1723 | (RecordSetPtr) ((char *) pRCAP + si[REP].offset), |
| 1724 | si[REP].size); |
| 1725 | } |
| 1726 | else |
| 1727 | pRCAP->pReplyMajorOpSet = NULL; |
| 1728 | |
| 1729 | if (si[ERR].intervals) { |
| 1730 | pRCAP->pErrorSet = |
| 1731 | RecordCreateSet(si[ERR].intervals, si[ERR].nintervals, |
| 1732 | (RecordSetPtr) ((char *) pRCAP + si[ERR].offset), |
| 1733 | si[ERR].size); |
| 1734 | } |
| 1735 | else |
| 1736 | pRCAP->pErrorSet = NULL; |
| 1737 | |
| 1738 | if (si[DEV].intervals) { |
| 1739 | pRCAP->pDeviceEventSet = |
| 1740 | RecordCreateSet(si[DEV].intervals, si[DEV].nintervals, |
| 1741 | (RecordSetPtr) ((char *) pRCAP + si[DEV].offset), |
| 1742 | si[DEV].size); |
| 1743 | } |
| 1744 | else |
| 1745 | pRCAP->pDeviceEventSet = NULL; |
| 1746 | |
| 1747 | if (si[DLEV].intervals) { |
| 1748 | pRCAP->pDeliveredEventSet = |
| 1749 | RecordCreateSet(si[DLEV].intervals, si[DLEV].nintervals, |
| 1750 | (RecordSetPtr) ((char *) pRCAP + si[DLEV].offset), |
| 1751 | si[DLEV].size); |
| 1752 | } |
| 1753 | else |
| 1754 | pRCAP->pDeliveredEventSet = NULL; |
| 1755 | |
| 1756 | if (nExtReqSets) { |
| 1757 | pRCAP->pRequestMinOpInfo = (RecordMinorOpPtr) |
| 1758 | ((char *) pRCAP + extReqSetsOffset); |
| 1759 | pRCAP->pRequestMinOpInfo[0].count = nExtReqSets; |
| 1760 | for (i = 0; i < nExtReqSets; i++, pExtReqSets++) { |
| 1761 | pRCAP->pRequestMinOpInfo[i + 1].major.first = pExtReqSets->first; |
| 1762 | pRCAP->pRequestMinOpInfo[i + 1].major.last = pExtReqSets->last; |
| 1763 | pRCAP->pRequestMinOpInfo[i + 1].major.pMinOpSet = |
| 1764 | RecordCreateSet(pExtReqSets->intervals, |
| 1765 | pExtReqSets->nintervals, |
| 1766 | (RecordSetPtr) ((char *) pRCAP + |
| 1767 | pExtReqSets->offset), |
| 1768 | pExtReqSets->size); |
| 1769 | } |
| 1770 | } |
| 1771 | else |
| 1772 | pRCAP->pRequestMinOpInfo = NULL; |
| 1773 | |
| 1774 | if (nExtRepSets) { |
| 1775 | pRCAP->pReplyMinOpInfo = (RecordMinorOpPtr) |
| 1776 | ((char *) pRCAP + extRepSetsOffset); |
| 1777 | pRCAP->pReplyMinOpInfo[0].count = nExtRepSets; |
| 1778 | for (i = 0; i < nExtRepSets; i++, pExtRepSets++) { |
| 1779 | pRCAP->pReplyMinOpInfo[i + 1].major.first = pExtRepSets->first; |
| 1780 | pRCAP->pReplyMinOpInfo[i + 1].major.last = pExtRepSets->last; |
| 1781 | pRCAP->pReplyMinOpInfo[i + 1].major.pMinOpSet = |
| 1782 | RecordCreateSet(pExtRepSets->intervals, |
| 1783 | pExtRepSets->nintervals, |
| 1784 | (RecordSetPtr) ((char *) pRCAP + |
| 1785 | pExtRepSets->offset), |
| 1786 | pExtRepSets->size); |
| 1787 | } |
| 1788 | } |
| 1789 | else |
| 1790 | pRCAP->pReplyMinOpInfo = NULL; |
| 1791 | |
| 1792 | pRCAP->clientStarted = clientStarted; |
| 1793 | pRCAP->clientDied = clientDied; |
| 1794 | |
| 1795 | /* link the RCAP onto the context */ |
| 1796 | |
| 1797 | pRCAP->pNextRCAP = pContext->pListOfRCAP; |
| 1798 | pContext->pListOfRCAP = pRCAP; |
| 1799 | |
| 1800 | if (pContext->pRecordingClient) /* context enabled */ |
| 1801 | RecordInstallHooks(pRCAP, 0); |
| 1802 | |
| 1803 | bailout: |
| 1804 | if (si) { |
| 1805 | for (i = 0; i < maxSets; i++) |
| 1806 | free(si[i].intervals); |
| 1807 | free(si); |
| 1808 | } |
| 1809 | if (pCanonClients && pCanonClients != (XID *) &stuff[1]) |
| 1810 | free(pCanonClients); |
| 1811 | return err; |
| 1812 | } /* RecordRegisterClients */ |
| 1813 | |
| 1814 | /* Proc functions all take a client argument, execute the request in |
| 1815 | * client->requestBuffer, and return a protocol error status. |
| 1816 | */ |
| 1817 | |
| 1818 | static int |
| 1819 | ProcRecordQueryVersion(ClientPtr client) |
| 1820 | { |
| 1821 | /* REQUEST(xRecordQueryVersionReq); */ |
| 1822 | xRecordQueryVersionReply rep = { |
| 1823 | .type = X_Reply, |
| 1824 | .sequenceNumber = client->sequence, |
| 1825 | .length = 0, |
| 1826 | .majorVersion = SERVER_RECORD_MAJOR_VERSION, |
| 1827 | .minorVersion = SERVER_RECORD_MINOR_VERSION |
| 1828 | }; |
| 1829 | |
| 1830 | REQUEST_SIZE_MATCH(xRecordQueryVersionReq); |
| 1831 | if (client->swapped) { |
| 1832 | swaps(&rep.sequenceNumber); |
| 1833 | swaps(&rep.majorVersion); |
| 1834 | swaps(&rep.minorVersion); |
| 1835 | } |
| 1836 | WriteToClient(client, sizeof(xRecordQueryVersionReply), &rep); |
| 1837 | return Success; |
| 1838 | } /* ProcRecordQueryVersion */ |
| 1839 | |
| 1840 | static int |
| 1841 | ProcRecordCreateContext(ClientPtr client) |
| 1842 | { |
| 1843 | REQUEST(xRecordCreateContextReq); |
| 1844 | RecordContextPtr pContext; |
| 1845 | RecordContextPtr *ppNewAllContexts = NULL; |
| 1846 | int err = BadAlloc; |
| 1847 | |
| 1848 | REQUEST_AT_LEAST_SIZE(xRecordCreateContextReq); |
| 1849 | LEGAL_NEW_RESOURCE(stuff->context, client); |
| 1850 | |
| 1851 | pContext = (RecordContextPtr) malloc(sizeof(RecordContextRec)); |
| 1852 | if (!pContext) |
| 1853 | goto bailout; |
| 1854 | |
| 1855 | /* make sure there is room in ppAllContexts to store the new context */ |
| 1856 | |
| 1857 | ppNewAllContexts = (RecordContextPtr *) |
| 1858 | realloc(ppAllContexts, sizeof(RecordContextPtr) * (numContexts + 1)); |
| 1859 | if (!ppNewAllContexts) |
| 1860 | goto bailout; |
| 1861 | ppAllContexts = ppNewAllContexts; |
| 1862 | |
| 1863 | pContext->id = stuff->context; |
| 1864 | pContext->pRecordingClient = NULL; |
| 1865 | pContext->pListOfRCAP = NULL; |
| 1866 | pContext->elemHeaders = 0; |
| 1867 | pContext->bufCategory = 0; |
| 1868 | pContext->numBufBytes = 0; |
| 1869 | pContext->pBufClient = NULL; |
| 1870 | pContext->continuedReply = 0; |
| 1871 | pContext->inFlush = 0; |
| 1872 | |
| 1873 | err = RecordRegisterClients(pContext, client, |
| 1874 | (xRecordRegisterClientsReq *) stuff); |
| 1875 | if (err != Success) |
| 1876 | goto bailout; |
| 1877 | |
| 1878 | if (AddResource(pContext->id, RTContext, pContext)) { |
| 1879 | ppAllContexts[numContexts++] = pContext; |
| 1880 | return Success; |
| 1881 | } |
| 1882 | else { |
| 1883 | RecordDeleteContext((pointer) pContext, pContext->id); |
| 1884 | return BadAlloc; |
| 1885 | } |
| 1886 | bailout: |
| 1887 | free(pContext); |
| 1888 | return err; |
| 1889 | } /* ProcRecordCreateContext */ |
| 1890 | |
| 1891 | static int |
| 1892 | ProcRecordRegisterClients(ClientPtr client) |
| 1893 | { |
| 1894 | RecordContextPtr pContext; |
| 1895 | |
| 1896 | REQUEST(xRecordRegisterClientsReq); |
| 1897 | |
| 1898 | REQUEST_AT_LEAST_SIZE(xRecordRegisterClientsReq); |
| 1899 | VERIFY_CONTEXT(pContext, stuff->context, client); |
| 1900 | |
| 1901 | return RecordRegisterClients(pContext, client, stuff); |
| 1902 | } /* ProcRecordRegisterClients */ |
| 1903 | |
| 1904 | static int |
| 1905 | ProcRecordUnregisterClients(ClientPtr client) |
| 1906 | { |
| 1907 | RecordContextPtr pContext; |
| 1908 | int err; |
| 1909 | |
| 1910 | REQUEST(xRecordUnregisterClientsReq); |
| 1911 | XID *pCanonClients; |
| 1912 | int nClients; |
| 1913 | int i; |
| 1914 | |
| 1915 | REQUEST_AT_LEAST_SIZE(xRecordUnregisterClientsReq); |
| 1916 | if ((client->req_len << 2) - SIZEOF(xRecordUnregisterClientsReq) != |
| 1917 | 4 * stuff->nClients) |
| 1918 | return BadLength; |
| 1919 | VERIFY_CONTEXT(pContext, stuff->context, client); |
| 1920 | err = RecordSanityCheckClientSpecifiers(client, (XID *) &stuff[1], |
| 1921 | stuff->nClients, 0); |
| 1922 | if (err != Success) |
| 1923 | return err; |
| 1924 | |
| 1925 | nClients = stuff->nClients; |
| 1926 | pCanonClients = RecordCanonicalizeClientSpecifiers((XID *) &stuff[1], |
| 1927 | &nClients, 0); |
| 1928 | if (!pCanonClients) |
| 1929 | return BadAlloc; |
| 1930 | |
| 1931 | for (i = 0; i < nClients; i++) { |
| 1932 | RecordDeleteClientFromContext(pContext, pCanonClients[i]); |
| 1933 | } |
| 1934 | if (pCanonClients != (XID *) &stuff[1]) |
| 1935 | free(pCanonClients); |
| 1936 | return Success; |
| 1937 | } /* ProcRecordUnregisterClients */ |
| 1938 | \f |
| 1939 | /****************************************************************************/ |
| 1940 | |
| 1941 | /* stuff for GetContext */ |
| 1942 | |
| 1943 | /* This is a tactical structure used to hold the xRecordRanges as they are |
| 1944 | * being reconstituted from the sets in the RCAPs. |
| 1945 | */ |
| 1946 | |
| 1947 | typedef struct { |
| 1948 | xRecordRange *pRanges; /* array of xRecordRanges for one RCAP */ |
| 1949 | int size; /* number of elements in pRanges, >= nRanges */ |
| 1950 | int nRanges; /* number of occupied element of pRanges */ |
| 1951 | } GetContextRangeInfoRec, *GetContextRangeInfoPtr; |
| 1952 | |
| 1953 | /* RecordAllocRanges |
| 1954 | * |
| 1955 | * Arguments: |
| 1956 | * pri is a pointer to a GetContextRangeInfoRec to allocate for. |
| 1957 | * nRanges is the number of xRecordRanges desired for pri. |
| 1958 | * |
| 1959 | * Returns: BadAlloc if a memory allocation error occurred, else Success. |
| 1960 | * |
| 1961 | * Side Effects: |
| 1962 | * If Success is returned, pri->pRanges points to at least nRanges |
| 1963 | * ranges. pri->nRanges is set to nRanges. pri->size is the actual |
| 1964 | * number of ranges. Newly allocated ranges are zeroed. |
| 1965 | */ |
| 1966 | static int |
| 1967 | RecordAllocRanges(GetContextRangeInfoPtr pri, int nRanges) |
| 1968 | { |
| 1969 | int newsize; |
| 1970 | xRecordRange *pNewRange; |
| 1971 | |
| 1972 | #define SZINCR 8 |
| 1973 | |
| 1974 | newsize = max(pri->size + SZINCR, nRanges); |
| 1975 | pNewRange = (xRecordRange *) realloc(pri->pRanges, |
| 1976 | newsize * sizeof(xRecordRange)); |
| 1977 | if (!pNewRange) |
| 1978 | return BadAlloc; |
| 1979 | |
| 1980 | pri->pRanges = pNewRange; |
| 1981 | pri->size = newsize; |
| 1982 | memset(&pri->pRanges[pri->size - SZINCR], 0, SZINCR * sizeof(xRecordRange)); |
| 1983 | if (pri->nRanges < nRanges) |
| 1984 | pri->nRanges = nRanges; |
| 1985 | return Success; |
| 1986 | } /* RecordAllocRanges */ |
| 1987 | |
| 1988 | /* RecordConvertSetToRanges |
| 1989 | * |
| 1990 | * Arguments: |
| 1991 | * pSet is the set to be converted. |
| 1992 | * pri is where the result should be stored. |
| 1993 | * byteoffset is the offset from the start of an xRecordRange of the |
| 1994 | * two vales (first, last) we are interested in. |
| 1995 | * card8 is TRUE if the vales are one byte each and FALSE if two bytes |
| 1996 | * each. |
| 1997 | * imax is the largest set value to store in pri->pRanges. |
| 1998 | * pStartIndex, if non-NULL, is the index of the first range in |
| 1999 | * pri->pRanges that should be stored to. If NULL, |
| 2000 | * start at index 0. |
| 2001 | * |
| 2002 | * Returns: BadAlloc if a memory allocation error occurred, else Success. |
| 2003 | * |
| 2004 | * Side Effects: |
| 2005 | * If Success is returned, the slice of pri->pRanges indicated by |
| 2006 | * byteoffset and card8 is filled in with the intervals from pSet. |
| 2007 | * if pStartIndex was non-NULL, *pStartIndex is filled in with one |
| 2008 | * more than the index of the last xRecordRange that was touched. |
| 2009 | */ |
| 2010 | static int |
| 2011 | RecordConvertSetToRanges(RecordSetPtr pSet, |
| 2012 | GetContextRangeInfoPtr pri, |
| 2013 | int byteoffset, |
| 2014 | Bool card8, unsigned int imax, int *pStartIndex) |
| 2015 | { |
| 2016 | int nRanges; |
| 2017 | RecordSetIteratePtr pIter = NULL; |
| 2018 | RecordSetInterval interval; |
| 2019 | CARD8 *pCARD8; |
| 2020 | CARD16 *pCARD16; |
| 2021 | int err; |
| 2022 | |
| 2023 | if (!pSet) |
| 2024 | return Success; |
| 2025 | |
| 2026 | nRanges = pStartIndex ? *pStartIndex : 0; |
| 2027 | while ((pIter = RecordIterateSet(pSet, pIter, &interval))) { |
| 2028 | if (interval.first > imax) |
| 2029 | break; |
| 2030 | if (interval.last > imax) |
| 2031 | interval.last = imax; |
| 2032 | nRanges++; |
| 2033 | if (nRanges > pri->size) { |
| 2034 | err = RecordAllocRanges(pri, nRanges); |
| 2035 | if (err != Success) |
| 2036 | return err; |
| 2037 | } |
| 2038 | else |
| 2039 | pri->nRanges = max(pri->nRanges, nRanges); |
| 2040 | if (card8) { |
| 2041 | pCARD8 = ((CARD8 *) &pri->pRanges[nRanges - 1]) + byteoffset; |
| 2042 | *pCARD8++ = interval.first; |
| 2043 | *pCARD8 = interval.last; |
| 2044 | } |
| 2045 | else { |
| 2046 | pCARD16 = (CARD16 *) |
| 2047 | (((char *) &pri->pRanges[nRanges - 1]) + byteoffset); |
| 2048 | *pCARD16++ = interval.first; |
| 2049 | *pCARD16 = interval.last; |
| 2050 | } |
| 2051 | } |
| 2052 | if (pStartIndex) |
| 2053 | *pStartIndex = nRanges; |
| 2054 | return Success; |
| 2055 | } /* RecordConvertSetToRanges */ |
| 2056 | |
| 2057 | /* RecordConvertMinorOpInfoToRanges |
| 2058 | * |
| 2059 | * Arguments: |
| 2060 | * pMinOpInfo is the minor opcode info to convert to xRecordRanges. |
| 2061 | * pri is where the result should be stored. |
| 2062 | * byteoffset is the offset from the start of an xRecordRange of the |
| 2063 | * four vales (CARD8 major_first, CARD8 major_last, |
| 2064 | * CARD16 minor_first, CARD16 minor_last) we are going to store. |
| 2065 | * |
| 2066 | * Returns: BadAlloc if a memory allocation error occurred, else Success. |
| 2067 | * |
| 2068 | * Side Effects: |
| 2069 | * If Success is returned, the slice of pri->pRanges indicated by |
| 2070 | * byteoffset is filled in with the information from pMinOpInfo. |
| 2071 | */ |
| 2072 | static int |
| 2073 | RecordConvertMinorOpInfoToRanges(RecordMinorOpPtr pMinOpInfo, |
| 2074 | GetContextRangeInfoPtr pri, int byteoffset) |
| 2075 | { |
| 2076 | int nsets; |
| 2077 | int start; |
| 2078 | int i; |
| 2079 | int err; |
| 2080 | |
| 2081 | if (!pMinOpInfo) |
| 2082 | return Success; |
| 2083 | |
| 2084 | nsets = pMinOpInfo->count; |
| 2085 | pMinOpInfo++; |
| 2086 | start = 0; |
| 2087 | for (i = 0; i < nsets; i++) { |
| 2088 | int j, s; |
| 2089 | |
| 2090 | s = start; |
| 2091 | err = RecordConvertSetToRanges(pMinOpInfo[i].major.pMinOpSet, pri, |
| 2092 | byteoffset + 2, FALSE, 65535, &start); |
| 2093 | if (err != Success) |
| 2094 | return err; |
| 2095 | for (j = s; j < start; j++) { |
| 2096 | CARD8 *pCARD8 = ((CARD8 *) &pri->pRanges[j]) + byteoffset; |
| 2097 | |
| 2098 | *pCARD8++ = pMinOpInfo[i].major.first; |
| 2099 | *pCARD8 = pMinOpInfo[i].major.last; |
| 2100 | } |
| 2101 | } |
| 2102 | return Success; |
| 2103 | } /* RecordConvertMinorOpInfoToRanges */ |
| 2104 | |
| 2105 | /* RecordSwapRanges |
| 2106 | * |
| 2107 | * Arguments: |
| 2108 | * pRanges is an array of xRecordRanges. |
| 2109 | * nRanges is the number of elements in pRanges. |
| 2110 | * |
| 2111 | * Returns: nothing. |
| 2112 | * |
| 2113 | * Side Effects: |
| 2114 | * The 16 bit fields of each xRecordRange are byte swapped. |
| 2115 | */ |
| 2116 | static void |
| 2117 | RecordSwapRanges(xRecordRange * pRanges, int nRanges) |
| 2118 | { |
| 2119 | int i; |
| 2120 | |
| 2121 | for (i = 0; i < nRanges; i++, pRanges++) { |
| 2122 | swaps(&pRanges->extRequestsMinorFirst); |
| 2123 | swaps(&pRanges->extRequestsMinorLast); |
| 2124 | swaps(&pRanges->extRepliesMinorFirst); |
| 2125 | swaps(&pRanges->extRepliesMinorLast); |
| 2126 | } |
| 2127 | } /* RecordSwapRanges */ |
| 2128 | |
| 2129 | static int |
| 2130 | ProcRecordGetContext(ClientPtr client) |
| 2131 | { |
| 2132 | RecordContextPtr pContext; |
| 2133 | |
| 2134 | REQUEST(xRecordGetContextReq); |
| 2135 | xRecordGetContextReply rep; |
| 2136 | RecordClientsAndProtocolPtr pRCAP; |
| 2137 | int nRCAPs = 0; |
| 2138 | GetContextRangeInfoPtr pRangeInfo; |
| 2139 | GetContextRangeInfoPtr pri; |
| 2140 | int i; |
| 2141 | int err; |
| 2142 | CARD32 nClients, length; |
| 2143 | |
| 2144 | REQUEST_SIZE_MATCH(xRecordGetContextReq); |
| 2145 | VERIFY_CONTEXT(pContext, stuff->context, client); |
| 2146 | |
| 2147 | /* how many RCAPs are there on this context? */ |
| 2148 | |
| 2149 | for (pRCAP = pContext->pListOfRCAP; pRCAP; pRCAP = pRCAP->pNextRCAP) |
| 2150 | nRCAPs++; |
| 2151 | |
| 2152 | /* allocate and initialize space for record range info */ |
| 2153 | |
| 2154 | pRangeInfo = |
| 2155 | (GetContextRangeInfoPtr) malloc(nRCAPs * |
| 2156 | sizeof(GetContextRangeInfoRec)); |
| 2157 | if (!pRangeInfo && nRCAPs > 0) |
| 2158 | return BadAlloc; |
| 2159 | for (i = 0; i < nRCAPs; i++) { |
| 2160 | pRangeInfo[i].pRanges = NULL; |
| 2161 | pRangeInfo[i].size = 0; |
| 2162 | pRangeInfo[i].nRanges = 0; |
| 2163 | } |
| 2164 | |
| 2165 | /* convert the RCAP (internal) representation of the recorded protocol |
| 2166 | * to the wire protocol (external) representation, storing the information |
| 2167 | * for the ith RCAP in pri[i] |
| 2168 | */ |
| 2169 | |
| 2170 | for (pRCAP = pContext->pListOfRCAP, pri = pRangeInfo; |
| 2171 | pRCAP; pRCAP = pRCAP->pNextRCAP, pri++) { |
| 2172 | xRecordRange rr; |
| 2173 | |
| 2174 | err = RecordConvertSetToRanges(pRCAP->pRequestMajorOpSet, pri, |
| 2175 | offset_of(rr, coreRequestsFirst), TRUE, |
| 2176 | 127, NULL); |
| 2177 | if (err != Success) |
| 2178 | goto bailout; |
| 2179 | |
| 2180 | err = RecordConvertSetToRanges(pRCAP->pReplyMajorOpSet, pri, |
| 2181 | offset_of(rr, coreRepliesFirst), TRUE, |
| 2182 | 127, NULL); |
| 2183 | if (err != Success) |
| 2184 | goto bailout; |
| 2185 | |
| 2186 | err = RecordConvertSetToRanges(pRCAP->pDeliveredEventSet, pri, |
| 2187 | offset_of(rr, deliveredEventsFirst), |
| 2188 | TRUE, 255, NULL); |
| 2189 | if (err != Success) |
| 2190 | goto bailout; |
| 2191 | |
| 2192 | err = RecordConvertSetToRanges(pRCAP->pDeviceEventSet, pri, |
| 2193 | offset_of(rr, deviceEventsFirst), TRUE, |
| 2194 | 255, NULL); |
| 2195 | if (err != Success) |
| 2196 | goto bailout; |
| 2197 | |
| 2198 | err = RecordConvertSetToRanges(pRCAP->pErrorSet, pri, |
| 2199 | offset_of(rr, errorsFirst), TRUE, 255, |
| 2200 | NULL); |
| 2201 | if (err != Success) |
| 2202 | goto bailout; |
| 2203 | |
| 2204 | err = RecordConvertMinorOpInfoToRanges(pRCAP->pRequestMinOpInfo, |
| 2205 | pri, offset_of(rr, |
| 2206 | extRequestsMajorFirst)); |
| 2207 | if (err != Success) |
| 2208 | goto bailout; |
| 2209 | |
| 2210 | err = RecordConvertMinorOpInfoToRanges(pRCAP->pReplyMinOpInfo, |
| 2211 | pri, offset_of(rr, |
| 2212 | extRepliesMajorFirst)); |
| 2213 | if (err != Success) |
| 2214 | goto bailout; |
| 2215 | |
| 2216 | if (pRCAP->clientStarted || pRCAP->clientDied) { |
| 2217 | if (pri->nRanges == 0) |
| 2218 | RecordAllocRanges(pri, 1); |
| 2219 | pri->pRanges[0].clientStarted = pRCAP->clientStarted; |
| 2220 | pri->pRanges[0].clientDied = pRCAP->clientDied; |
| 2221 | } |
| 2222 | } |
| 2223 | |
| 2224 | /* calculate number of clients and reply length */ |
| 2225 | |
| 2226 | nClients = 0; |
| 2227 | length = 0; |
| 2228 | for (pRCAP = pContext->pListOfRCAP, pri = pRangeInfo; |
| 2229 | pRCAP; pRCAP = pRCAP->pNextRCAP, pri++) { |
| 2230 | nClients += pRCAP->numClients; |
| 2231 | length += pRCAP->numClients * |
| 2232 | (bytes_to_int32(sizeof(xRecordClientInfo)) + |
| 2233 | pri->nRanges * bytes_to_int32(sizeof(xRecordRange))); |
| 2234 | } |
| 2235 | |
| 2236 | /* write the reply header */ |
| 2237 | |
| 2238 | rep = (xRecordGetContextReply) { |
| 2239 | .type = X_Reply, |
| 2240 | .enabled = pContext->pRecordingClient != NULL, |
| 2241 | .sequenceNumber = client->sequence, |
| 2242 | .length = length, |
| 2243 | .elementHeader = pContext->elemHeaders, |
| 2244 | .nClients = nClients |
| 2245 | }; |
| 2246 | if (client->swapped) { |
| 2247 | swaps(&rep.sequenceNumber); |
| 2248 | swapl(&rep.length); |
| 2249 | swapl(&rep.nClients); |
| 2250 | } |
| 2251 | WriteToClient(client, sizeof(xRecordGetContextReply), &rep); |
| 2252 | |
| 2253 | /* write all the CLIENT_INFOs */ |
| 2254 | |
| 2255 | for (pRCAP = pContext->pListOfRCAP, pri = pRangeInfo; |
| 2256 | pRCAP; pRCAP = pRCAP->pNextRCAP, pri++) { |
| 2257 | xRecordClientInfo rci; |
| 2258 | |
| 2259 | rci.nRanges = pri->nRanges; |
| 2260 | if (client->swapped) { |
| 2261 | swapl(&rci.nRanges); |
| 2262 | RecordSwapRanges(pri->pRanges, pri->nRanges); |
| 2263 | } |
| 2264 | for (i = 0; i < pRCAP->numClients; i++) { |
| 2265 | rci.clientResource = pRCAP->pClientIDs[i]; |
| 2266 | if (client->swapped) |
| 2267 | swapl(&rci.clientResource); |
| 2268 | WriteToClient(client, sizeof(xRecordClientInfo), &rci); |
| 2269 | WriteToClient(client, sizeof(xRecordRange) * pri->nRanges, |
| 2270 | pri->pRanges); |
| 2271 | } |
| 2272 | } |
| 2273 | err = Success; |
| 2274 | |
| 2275 | bailout: |
| 2276 | for (i = 0; i < nRCAPs; i++) { |
| 2277 | free(pRangeInfo[i].pRanges); |
| 2278 | } |
| 2279 | free(pRangeInfo); |
| 2280 | return err; |
| 2281 | } /* ProcRecordGetContext */ |
| 2282 | |
| 2283 | static int |
| 2284 | ProcRecordEnableContext(ClientPtr client) |
| 2285 | { |
| 2286 | RecordContextPtr pContext; |
| 2287 | |
| 2288 | REQUEST(xRecordEnableContextReq); |
| 2289 | int i; |
| 2290 | RecordClientsAndProtocolPtr pRCAP; |
| 2291 | |
| 2292 | REQUEST_SIZE_MATCH(xRecordGetContextReq); |
| 2293 | VERIFY_CONTEXT(pContext, stuff->context, client); |
| 2294 | if (pContext->pRecordingClient) |
| 2295 | return BadMatch; /* already enabled */ |
| 2296 | |
| 2297 | /* install record hooks for each RCAP */ |
| 2298 | |
| 2299 | for (pRCAP = pContext->pListOfRCAP; pRCAP; pRCAP = pRCAP->pNextRCAP) { |
| 2300 | int err = RecordInstallHooks(pRCAP, 0); |
| 2301 | |
| 2302 | if (err != Success) { /* undo the previous installs */ |
| 2303 | RecordClientsAndProtocolPtr pUninstallRCAP; |
| 2304 | |
| 2305 | for (pUninstallRCAP = pContext->pListOfRCAP; |
| 2306 | pUninstallRCAP != pRCAP; |
| 2307 | pUninstallRCAP = pUninstallRCAP->pNextRCAP) { |
| 2308 | RecordUninstallHooks(pUninstallRCAP, 0); |
| 2309 | } |
| 2310 | return err; |
| 2311 | } |
| 2312 | } |
| 2313 | |
| 2314 | /* Disallow further request processing on this connection until |
| 2315 | * the context is disabled. |
| 2316 | */ |
| 2317 | IgnoreClient(client); |
| 2318 | pContext->pRecordingClient = client; |
| 2319 | |
| 2320 | /* Don't allow the data connection to record itself; unregister it. */ |
| 2321 | RecordDeleteClientFromContext(pContext, |
| 2322 | pContext->pRecordingClient->clientAsMask); |
| 2323 | |
| 2324 | /* move the newly enabled context to the front part of ppAllContexts, |
| 2325 | * where all the enabled contexts are |
| 2326 | */ |
| 2327 | i = RecordFindContextOnAllContexts(pContext); |
| 2328 | assert(i >= numEnabledContexts); |
| 2329 | if (i != numEnabledContexts) { |
| 2330 | ppAllContexts[i] = ppAllContexts[numEnabledContexts]; |
| 2331 | ppAllContexts[numEnabledContexts] = pContext; |
| 2332 | } |
| 2333 | |
| 2334 | ++numEnabledContexts; |
| 2335 | assert(numEnabledContexts > 0); |
| 2336 | |
| 2337 | /* send StartOfData */ |
| 2338 | RecordAProtocolElement(pContext, NULL, XRecordStartOfData, NULL, 0, 0, 0); |
| 2339 | RecordFlushReplyBuffer(pContext, NULL, 0, NULL, 0); |
| 2340 | return Success; |
| 2341 | } /* ProcRecordEnableContext */ |
| 2342 | |
| 2343 | /* RecordDisableContext |
| 2344 | * |
| 2345 | * Arguments: |
| 2346 | * pContext is the context to disable. |
| 2347 | * nRanges is the number of elements in pRanges. |
| 2348 | * |
| 2349 | * Returns: nothing. |
| 2350 | * |
| 2351 | * Side Effects: |
| 2352 | * If the context was enabled, it is disabled. An EndOfData |
| 2353 | * message is sent to the recording client. Recording hooks for |
| 2354 | * this context are uninstalled. The context is moved to the |
| 2355 | * rear part of the ppAllContexts array. numEnabledContexts is |
| 2356 | * decremented. Request processing for the formerly recording client |
| 2357 | * is resumed. |
| 2358 | */ |
| 2359 | static void |
| 2360 | RecordDisableContext(RecordContextPtr pContext) |
| 2361 | { |
| 2362 | RecordClientsAndProtocolPtr pRCAP; |
| 2363 | int i; |
| 2364 | |
| 2365 | if (!pContext->pRecordingClient) |
| 2366 | return; |
| 2367 | if (!pContext->pRecordingClient->clientGone) { |
| 2368 | RecordAProtocolElement(pContext, NULL, XRecordEndOfData, NULL, 0, 0, 0); |
| 2369 | RecordFlushReplyBuffer(pContext, NULL, 0, NULL, 0); |
| 2370 | /* Re-enable request processing on this connection. */ |
| 2371 | AttendClient(pContext->pRecordingClient); |
| 2372 | } |
| 2373 | |
| 2374 | for (pRCAP = pContext->pListOfRCAP; pRCAP; pRCAP = pRCAP->pNextRCAP) { |
| 2375 | RecordUninstallHooks(pRCAP, 0); |
| 2376 | } |
| 2377 | |
| 2378 | pContext->pRecordingClient = NULL; |
| 2379 | |
| 2380 | /* move the newly disabled context to the rear part of ppAllContexts, |
| 2381 | * where all the disabled contexts are |
| 2382 | */ |
| 2383 | i = RecordFindContextOnAllContexts(pContext); |
| 2384 | assert((i != -1) && (i < numEnabledContexts)); |
| 2385 | if (i != (numEnabledContexts - 1)) { |
| 2386 | ppAllContexts[i] = ppAllContexts[numEnabledContexts - 1]; |
| 2387 | ppAllContexts[numEnabledContexts - 1] = pContext; |
| 2388 | } |
| 2389 | --numEnabledContexts; |
| 2390 | assert(numEnabledContexts >= 0); |
| 2391 | } /* RecordDisableContext */ |
| 2392 | |
| 2393 | static int |
| 2394 | ProcRecordDisableContext(ClientPtr client) |
| 2395 | { |
| 2396 | RecordContextPtr pContext; |
| 2397 | |
| 2398 | REQUEST(xRecordDisableContextReq); |
| 2399 | |
| 2400 | REQUEST_SIZE_MATCH(xRecordDisableContextReq); |
| 2401 | VERIFY_CONTEXT(pContext, stuff->context, client); |
| 2402 | RecordDisableContext(pContext); |
| 2403 | return Success; |
| 2404 | } /* ProcRecordDisableContext */ |
| 2405 | |
| 2406 | /* RecordDeleteContext |
| 2407 | * |
| 2408 | * Arguments: |
| 2409 | * value is the context to delete. |
| 2410 | * id is its resource ID. |
| 2411 | * |
| 2412 | * Returns: Success. |
| 2413 | * |
| 2414 | * Side Effects: |
| 2415 | * Disables the context, frees all associated memory, and removes |
| 2416 | * it from the ppAllContexts array. |
| 2417 | */ |
| 2418 | static int |
| 2419 | RecordDeleteContext(pointer value, XID id) |
| 2420 | { |
| 2421 | int i; |
| 2422 | RecordContextPtr pContext = (RecordContextPtr) value; |
| 2423 | RecordClientsAndProtocolPtr pRCAP; |
| 2424 | |
| 2425 | RecordDisableContext(pContext); |
| 2426 | |
| 2427 | /* Remove all the clients from all the RCAPs. |
| 2428 | * As a result, the RCAPs will be freed. |
| 2429 | */ |
| 2430 | |
| 2431 | while ((pRCAP = pContext->pListOfRCAP)) { |
| 2432 | int numClients = pRCAP->numClients; |
| 2433 | |
| 2434 | /* when the last client is deleted, the RCAP will go away. */ |
| 2435 | while (numClients--) { |
| 2436 | RecordDeleteClientFromRCAP(pRCAP, numClients); |
| 2437 | } |
| 2438 | } |
| 2439 | |
| 2440 | /* remove context from AllContexts list */ |
| 2441 | |
| 2442 | if (-1 != (i = RecordFindContextOnAllContexts(pContext))) { |
| 2443 | ppAllContexts[i] = ppAllContexts[numContexts - 1]; |
| 2444 | if (--numContexts == 0) { |
| 2445 | free(ppAllContexts); |
| 2446 | ppAllContexts = NULL; |
| 2447 | } |
| 2448 | } |
| 2449 | free(pContext); |
| 2450 | |
| 2451 | return Success; |
| 2452 | } /* RecordDeleteContext */ |
| 2453 | |
| 2454 | static int |
| 2455 | ProcRecordFreeContext(ClientPtr client) |
| 2456 | { |
| 2457 | RecordContextPtr pContext; |
| 2458 | |
| 2459 | REQUEST(xRecordFreeContextReq); |
| 2460 | |
| 2461 | REQUEST_SIZE_MATCH(xRecordFreeContextReq); |
| 2462 | VERIFY_CONTEXT(pContext, stuff->context, client); |
| 2463 | FreeResource(stuff->context, RT_NONE); |
| 2464 | return Success; |
| 2465 | } /* ProcRecordFreeContext */ |
| 2466 | |
| 2467 | static int |
| 2468 | ProcRecordDispatch(ClientPtr client) |
| 2469 | { |
| 2470 | REQUEST(xReq); |
| 2471 | |
| 2472 | switch (stuff->data) { |
| 2473 | case X_RecordQueryVersion: |
| 2474 | return ProcRecordQueryVersion(client); |
| 2475 | case X_RecordCreateContext: |
| 2476 | return ProcRecordCreateContext(client); |
| 2477 | case X_RecordRegisterClients: |
| 2478 | return ProcRecordRegisterClients(client); |
| 2479 | case X_RecordUnregisterClients: |
| 2480 | return ProcRecordUnregisterClients(client); |
| 2481 | case X_RecordGetContext: |
| 2482 | return ProcRecordGetContext(client); |
| 2483 | case X_RecordEnableContext: |
| 2484 | return ProcRecordEnableContext(client); |
| 2485 | case X_RecordDisableContext: |
| 2486 | return ProcRecordDisableContext(client); |
| 2487 | case X_RecordFreeContext: |
| 2488 | return ProcRecordFreeContext(client); |
| 2489 | default: |
| 2490 | return BadRequest; |
| 2491 | } |
| 2492 | } /* ProcRecordDispatch */ |
| 2493 | |
| 2494 | static int |
| 2495 | SProcRecordQueryVersion(ClientPtr client) |
| 2496 | { |
| 2497 | REQUEST(xRecordQueryVersionReq); |
| 2498 | |
| 2499 | swaps(&stuff->length); |
| 2500 | REQUEST_SIZE_MATCH(xRecordQueryVersionReq); |
| 2501 | swaps(&stuff->majorVersion); |
| 2502 | swaps(&stuff->minorVersion); |
| 2503 | return ProcRecordQueryVersion(client); |
| 2504 | } /* SProcRecordQueryVersion */ |
| 2505 | |
| 2506 | static int |
| 2507 | SwapCreateRegister(xRecordRegisterClientsReq * stuff) |
| 2508 | { |
| 2509 | int i; |
| 2510 | XID *pClientID; |
| 2511 | |
| 2512 | swapl(&stuff->context); |
| 2513 | swapl(&stuff->nClients); |
| 2514 | swapl(&stuff->nRanges); |
| 2515 | pClientID = (XID *) &stuff[1]; |
| 2516 | if (stuff->nClients > |
| 2517 | stuff->length - bytes_to_int32(sz_xRecordRegisterClientsReq)) |
| 2518 | return BadLength; |
| 2519 | for (i = 0; i < stuff->nClients; i++, pClientID++) { |
| 2520 | swapl(pClientID); |
| 2521 | } |
| 2522 | if (stuff->nRanges > |
| 2523 | stuff->length - bytes_to_int32(sz_xRecordRegisterClientsReq) |
| 2524 | - stuff->nClients) |
| 2525 | return BadLength; |
| 2526 | RecordSwapRanges((xRecordRange *) pClientID, stuff->nRanges); |
| 2527 | return Success; |
| 2528 | } /* SwapCreateRegister */ |
| 2529 | |
| 2530 | static int |
| 2531 | SProcRecordCreateContext(ClientPtr client) |
| 2532 | { |
| 2533 | REQUEST(xRecordCreateContextReq); |
| 2534 | int status; |
| 2535 | |
| 2536 | swaps(&stuff->length); |
| 2537 | REQUEST_AT_LEAST_SIZE(xRecordCreateContextReq); |
| 2538 | if ((status = SwapCreateRegister((pointer) stuff)) != Success) |
| 2539 | return status; |
| 2540 | return ProcRecordCreateContext(client); |
| 2541 | } /* SProcRecordCreateContext */ |
| 2542 | |
| 2543 | static int |
| 2544 | SProcRecordRegisterClients(ClientPtr client) |
| 2545 | { |
| 2546 | REQUEST(xRecordRegisterClientsReq); |
| 2547 | int status; |
| 2548 | |
| 2549 | swaps(&stuff->length); |
| 2550 | REQUEST_AT_LEAST_SIZE(xRecordRegisterClientsReq); |
| 2551 | if ((status = SwapCreateRegister((pointer) stuff)) != Success) |
| 2552 | return status; |
| 2553 | return ProcRecordRegisterClients(client); |
| 2554 | } /* SProcRecordRegisterClients */ |
| 2555 | |
| 2556 | static int |
| 2557 | SProcRecordUnregisterClients(ClientPtr client) |
| 2558 | { |
| 2559 | REQUEST(xRecordUnregisterClientsReq); |
| 2560 | |
| 2561 | swaps(&stuff->length); |
| 2562 | REQUEST_AT_LEAST_SIZE(xRecordUnregisterClientsReq); |
| 2563 | swapl(&stuff->context); |
| 2564 | swapl(&stuff->nClients); |
| 2565 | SwapRestL(stuff); |
| 2566 | return ProcRecordUnregisterClients(client); |
| 2567 | } /* SProcRecordUnregisterClients */ |
| 2568 | |
| 2569 | static int |
| 2570 | SProcRecordGetContext(ClientPtr client) |
| 2571 | { |
| 2572 | REQUEST(xRecordGetContextReq); |
| 2573 | |
| 2574 | swaps(&stuff->length); |
| 2575 | REQUEST_SIZE_MATCH(xRecordGetContextReq); |
| 2576 | swapl(&stuff->context); |
| 2577 | return ProcRecordGetContext(client); |
| 2578 | } /* SProcRecordGetContext */ |
| 2579 | |
| 2580 | static int |
| 2581 | SProcRecordEnableContext(ClientPtr client) |
| 2582 | { |
| 2583 | REQUEST(xRecordEnableContextReq); |
| 2584 | |
| 2585 | swaps(&stuff->length); |
| 2586 | REQUEST_SIZE_MATCH(xRecordEnableContextReq); |
| 2587 | swapl(&stuff->context); |
| 2588 | return ProcRecordEnableContext(client); |
| 2589 | } /* SProcRecordEnableContext */ |
| 2590 | |
| 2591 | static int |
| 2592 | SProcRecordDisableContext(ClientPtr client) |
| 2593 | { |
| 2594 | REQUEST(xRecordDisableContextReq); |
| 2595 | |
| 2596 | swaps(&stuff->length); |
| 2597 | REQUEST_SIZE_MATCH(xRecordDisableContextReq); |
| 2598 | swapl(&stuff->context); |
| 2599 | return ProcRecordDisableContext(client); |
| 2600 | } /* SProcRecordDisableContext */ |
| 2601 | |
| 2602 | static int |
| 2603 | SProcRecordFreeContext(ClientPtr client) |
| 2604 | { |
| 2605 | REQUEST(xRecordFreeContextReq); |
| 2606 | |
| 2607 | swaps(&stuff->length); |
| 2608 | REQUEST_SIZE_MATCH(xRecordFreeContextReq); |
| 2609 | swapl(&stuff->context); |
| 2610 | return ProcRecordFreeContext(client); |
| 2611 | } /* SProcRecordFreeContext */ |
| 2612 | |
| 2613 | static int |
| 2614 | SProcRecordDispatch(ClientPtr client) |
| 2615 | { |
| 2616 | REQUEST(xReq); |
| 2617 | |
| 2618 | switch (stuff->data) { |
| 2619 | case X_RecordQueryVersion: |
| 2620 | return SProcRecordQueryVersion(client); |
| 2621 | case X_RecordCreateContext: |
| 2622 | return SProcRecordCreateContext(client); |
| 2623 | case X_RecordRegisterClients: |
| 2624 | return SProcRecordRegisterClients(client); |
| 2625 | case X_RecordUnregisterClients: |
| 2626 | return SProcRecordUnregisterClients(client); |
| 2627 | case X_RecordGetContext: |
| 2628 | return SProcRecordGetContext(client); |
| 2629 | case X_RecordEnableContext: |
| 2630 | return SProcRecordEnableContext(client); |
| 2631 | case X_RecordDisableContext: |
| 2632 | return SProcRecordDisableContext(client); |
| 2633 | case X_RecordFreeContext: |
| 2634 | return SProcRecordFreeContext(client); |
| 2635 | default: |
| 2636 | return BadRequest; |
| 2637 | } |
| 2638 | } /* SProcRecordDispatch */ |
| 2639 | |
| 2640 | /* RecordConnectionSetupInfo |
| 2641 | * |
| 2642 | * Arguments: |
| 2643 | * pContext is an enabled context that specifies recording of |
| 2644 | * connection setup info. |
| 2645 | * pci holds the connection setup info. |
| 2646 | * |
| 2647 | * Returns: nothing. |
| 2648 | * |
| 2649 | * Side Effects: |
| 2650 | * The connection setup info is sent to the recording client. |
| 2651 | */ |
| 2652 | static void |
| 2653 | RecordConnectionSetupInfo(RecordContextPtr pContext, NewClientInfoRec * pci) |
| 2654 | { |
| 2655 | int prefixsize = SIZEOF(xConnSetupPrefix); |
| 2656 | int restsize = pci->prefix->length * 4; |
| 2657 | |
| 2658 | if (pci->client->swapped) { |
| 2659 | char *pConnSetup = (char *) malloc(prefixsize + restsize); |
| 2660 | |
| 2661 | if (!pConnSetup) |
| 2662 | return; |
| 2663 | SwapConnSetupPrefix(pci->prefix, (xConnSetupPrefix *) pConnSetup); |
| 2664 | SwapConnSetupInfo((char *) pci->setup, |
| 2665 | (char *) (pConnSetup + prefixsize)); |
| 2666 | RecordAProtocolElement(pContext, pci->client, XRecordClientStarted, |
| 2667 | (pointer) pConnSetup, prefixsize + restsize, 0, |
| 2668 | 0); |
| 2669 | free(pConnSetup); |
| 2670 | } |
| 2671 | else { |
| 2672 | /* don't alloc and copy as in the swapped case; just send the |
| 2673 | * data in two pieces |
| 2674 | */ |
| 2675 | RecordAProtocolElement(pContext, pci->client, XRecordClientStarted, |
| 2676 | (pointer) pci->prefix, prefixsize, 0, restsize); |
| 2677 | RecordAProtocolElement(pContext, pci->client, XRecordClientStarted, |
| 2678 | (pointer) pci->setup, restsize, 0, |
| 2679 | /* continuation */ -1); |
| 2680 | } |
| 2681 | } /* RecordConnectionSetupInfo */ |
| 2682 | |
| 2683 | /* RecordDeleteContext |
| 2684 | * |
| 2685 | * Arguments: |
| 2686 | * pcbl is &ClientStateCallback. |
| 2687 | * nullata is NULL. |
| 2688 | * calldata is a pointer to a NewClientInfoRec (include/dixstruct.h) |
| 2689 | * which contains information about client state changes. |
| 2690 | * |
| 2691 | * Returns: nothing. |
| 2692 | * |
| 2693 | * Side Effects: |
| 2694 | * If a new client has connected and any contexts have specified |
| 2695 | * XRecordFutureClients, the new client is registered on those contexts. |
| 2696 | * If any of those contexts specify recording of the connection setup |
| 2697 | * info, it is recorded. |
| 2698 | * |
| 2699 | * If an existing client has disconnected, it is deleted from any |
| 2700 | * contexts that it was registered on. If any of those contexts |
| 2701 | * specified XRecordClientDied, they record a ClientDied protocol element. |
| 2702 | * If the disconnectiong client happened to be the data connection of an |
| 2703 | * enabled context, the context is disabled. |
| 2704 | */ |
| 2705 | |
| 2706 | static void |
| 2707 | RecordAClientStateChange(CallbackListPtr *pcbl, pointer nulldata, |
| 2708 | pointer calldata) |
| 2709 | { |
| 2710 | NewClientInfoRec *pci = (NewClientInfoRec *) calldata; |
| 2711 | int i; |
| 2712 | ClientPtr pClient = pci->client; |
| 2713 | RecordContextPtr *ppAllContextsCopy = NULL; |
| 2714 | int numContextsCopy = 0; |
| 2715 | |
| 2716 | switch (pClient->clientState) { |
| 2717 | case ClientStateRunning: /* new client */ |
| 2718 | for (i = 0; i < numContexts; i++) { |
| 2719 | RecordClientsAndProtocolPtr pRCAP; |
| 2720 | RecordContextPtr pContext = ppAllContexts[i]; |
| 2721 | |
| 2722 | if ((pRCAP = RecordFindClientOnContext(pContext, |
| 2723 | XRecordFutureClients, NULL))) |
| 2724 | { |
| 2725 | RecordAddClientToRCAP(pRCAP, pClient->clientAsMask); |
| 2726 | if (pContext->pRecordingClient && pRCAP->clientStarted) |
| 2727 | RecordConnectionSetupInfo(pContext, pci); |
| 2728 | } |
| 2729 | } |
| 2730 | break; |
| 2731 | |
| 2732 | case ClientStateGone: |
| 2733 | case ClientStateRetained: /* client disconnected */ |
| 2734 | |
| 2735 | /* RecordDisableContext modifies contents of ppAllContexts. */ |
| 2736 | numContextsCopy = numContexts; |
| 2737 | ppAllContextsCopy = malloc(numContextsCopy * sizeof(RecordContextPtr)); |
| 2738 | assert(ppAllContextsCopy); |
| 2739 | memcpy(ppAllContextsCopy, ppAllContexts, |
| 2740 | numContextsCopy * sizeof(RecordContextPtr)); |
| 2741 | |
| 2742 | for (i = 0; i < numContextsCopy; i++) { |
| 2743 | RecordClientsAndProtocolPtr pRCAP; |
| 2744 | RecordContextPtr pContext = ppAllContextsCopy[i]; |
| 2745 | int pos; |
| 2746 | |
| 2747 | if (pContext->pRecordingClient == pClient) |
| 2748 | RecordDisableContext(pContext); |
| 2749 | if ((pRCAP = RecordFindClientOnContext(pContext, |
| 2750 | pClient->clientAsMask, |
| 2751 | &pos))) { |
| 2752 | if (pContext->pRecordingClient && pRCAP->clientDied) |
| 2753 | RecordAProtocolElement(pContext, pClient, |
| 2754 | XRecordClientDied, NULL, 0, 0, 0); |
| 2755 | RecordDeleteClientFromRCAP(pRCAP, pos); |
| 2756 | } |
| 2757 | } |
| 2758 | |
| 2759 | free(ppAllContextsCopy); |
| 2760 | break; |
| 2761 | |
| 2762 | default: |
| 2763 | break; |
| 2764 | } /* end switch on client state */ |
| 2765 | } /* RecordAClientStateChange */ |
| 2766 | |
| 2767 | /* RecordCloseDown |
| 2768 | * |
| 2769 | * Arguments: |
| 2770 | * extEntry is the extension information for RECORD. |
| 2771 | * |
| 2772 | * Returns: nothing. |
| 2773 | * |
| 2774 | * Side Effects: |
| 2775 | * Performs any cleanup needed by RECORD at server shutdown time. |
| 2776 | * |
| 2777 | */ |
| 2778 | static void |
| 2779 | RecordCloseDown(ExtensionEntry * extEntry) |
| 2780 | { |
| 2781 | DeleteCallback(&ClientStateCallback, RecordAClientStateChange, NULL); |
| 2782 | } /* RecordCloseDown */ |
| 2783 | |
| 2784 | /* RecordExtensionInit |
| 2785 | * |
| 2786 | * Arguments: none. |
| 2787 | * |
| 2788 | * Returns: nothing. |
| 2789 | * |
| 2790 | * Side Effects: |
| 2791 | * Enables the RECORD extension if possible. |
| 2792 | */ |
| 2793 | void |
| 2794 | RecordExtensionInit(void) |
| 2795 | { |
| 2796 | ExtensionEntry *extentry; |
| 2797 | |
| 2798 | RTContext = CreateNewResourceType(RecordDeleteContext, "RecordContext"); |
| 2799 | if (!RTContext) |
| 2800 | return; |
| 2801 | |
| 2802 | if (!dixRegisterPrivateKey(RecordClientPrivateKey, PRIVATE_CLIENT, 0)) |
| 2803 | return; |
| 2804 | |
| 2805 | ppAllContexts = NULL; |
| 2806 | numContexts = numEnabledContexts = numEnabledRCAPs = 0; |
| 2807 | |
| 2808 | if (!AddCallback(&ClientStateCallback, RecordAClientStateChange, NULL)) |
| 2809 | return; |
| 2810 | |
| 2811 | extentry = AddExtension(RECORD_NAME, RecordNumEvents, RecordNumErrors, |
| 2812 | ProcRecordDispatch, SProcRecordDispatch, |
| 2813 | RecordCloseDown, StandardMinorOpcode); |
| 2814 | if (!extentry) { |
| 2815 | DeleteCallback(&ClientStateCallback, RecordAClientStateChange, NULL); |
| 2816 | return; |
| 2817 | } |
| 2818 | SetResourceTypeErrorValue(RTContext, |
| 2819 | extentry->errorBase + XRecordBadContext); |
| 2820 | |
| 2821 | } /* RecordExtensionInit */ |