| 1 | /* |
| 2 | * Copyright © 2006 Keith Packard |
| 3 | * |
| 4 | * Permission to use, copy, modify, distribute, and sell this software and its |
| 5 | * documentation for any purpose is hereby granted without fee, provided that |
| 6 | * the above copyright notice appear in all copies and that both that copyright |
| 7 | * notice and this permission notice appear in supporting documentation, and |
| 8 | * that the name of the copyright holders not be used in advertising or |
| 9 | * publicity pertaining to distribution of the software without specific, |
| 10 | * written prior permission. The copyright holders make no representations |
| 11 | * about the suitability of this software for any purpose. It is provided "as |
| 12 | * is" without express or implied warranty. |
| 13 | * |
| 14 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
| 15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
| 16 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
| 17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
| 18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
| 20 | * OF THIS SOFTWARE. |
| 21 | */ |
| 22 | |
| 23 | #include "randrstr.h" |
| 24 | #include "propertyst.h" |
| 25 | #include "swaprep.h" |
| 26 | |
| 27 | static int |
| 28 | DeliverPropertyEvent(WindowPtr pWin, void *value) |
| 29 | { |
| 30 | xRROutputPropertyNotifyEvent *event = value; |
| 31 | RREventPtr *pHead, pRREvent; |
| 32 | |
| 33 | dixLookupResourceByType((pointer *) &pHead, pWin->drawable.id, |
| 34 | RREventType, serverClient, DixReadAccess); |
| 35 | if (!pHead) |
| 36 | return WT_WALKCHILDREN; |
| 37 | |
| 38 | for (pRREvent = *pHead; pRREvent; pRREvent = pRREvent->next) { |
| 39 | if (!(pRREvent->mask & RROutputPropertyNotifyMask)) |
| 40 | continue; |
| 41 | |
| 42 | event->window = pRREvent->window->drawable.id; |
| 43 | WriteEventsToClient(pRREvent->client, 1, (xEvent *) event); |
| 44 | } |
| 45 | |
| 46 | return WT_WALKCHILDREN; |
| 47 | } |
| 48 | |
| 49 | static void |
| 50 | RRDeliverPropertyEvent(ScreenPtr pScreen, xEvent *event) |
| 51 | { |
| 52 | if (!(dispatchException & (DE_RESET | DE_TERMINATE))) |
| 53 | WalkTree(pScreen, DeliverPropertyEvent, event); |
| 54 | } |
| 55 | |
| 56 | static void |
| 57 | RRDestroyOutputProperty(RRPropertyPtr prop) |
| 58 | { |
| 59 | free(prop->valid_values); |
| 60 | free(prop->current.data); |
| 61 | free(prop->pending.data); |
| 62 | free(prop); |
| 63 | } |
| 64 | |
| 65 | static void |
| 66 | RRDeleteProperty(RROutputRec * output, RRPropertyRec * prop) |
| 67 | { |
| 68 | xRROutputPropertyNotifyEvent event = { |
| 69 | .type = RREventBase + RRNotify, |
| 70 | .subCode = RRNotify_OutputProperty, |
| 71 | .output = output->id, |
| 72 | .state = PropertyDelete, |
| 73 | .atom = prop->propertyName, |
| 74 | .timestamp = currentTime.milliseconds |
| 75 | }; |
| 76 | |
| 77 | RRDeliverPropertyEvent(output->pScreen, (xEvent *) &event); |
| 78 | |
| 79 | RRDestroyOutputProperty(prop); |
| 80 | } |
| 81 | |
| 82 | void |
| 83 | RRDeleteAllOutputProperties(RROutputPtr output) |
| 84 | { |
| 85 | RRPropertyPtr prop, next; |
| 86 | |
| 87 | for (prop = output->properties; prop; prop = next) { |
| 88 | next = prop->next; |
| 89 | RRDeleteProperty(output, prop); |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | static void |
| 94 | RRInitOutputPropertyValue(RRPropertyValuePtr property_value) |
| 95 | { |
| 96 | property_value->type = None; |
| 97 | property_value->format = 0; |
| 98 | property_value->size = 0; |
| 99 | property_value->data = NULL; |
| 100 | } |
| 101 | |
| 102 | static RRPropertyPtr |
| 103 | RRCreateOutputProperty(Atom property) |
| 104 | { |
| 105 | RRPropertyPtr prop; |
| 106 | |
| 107 | prop = (RRPropertyPtr) malloc(sizeof(RRPropertyRec)); |
| 108 | if (!prop) |
| 109 | return NULL; |
| 110 | prop->next = NULL; |
| 111 | prop->propertyName = property; |
| 112 | prop->is_pending = FALSE; |
| 113 | prop->range = FALSE; |
| 114 | prop->immutable = FALSE; |
| 115 | prop->num_valid = 0; |
| 116 | prop->valid_values = NULL; |
| 117 | RRInitOutputPropertyValue(&prop->current); |
| 118 | RRInitOutputPropertyValue(&prop->pending); |
| 119 | return prop; |
| 120 | } |
| 121 | |
| 122 | void |
| 123 | RRDeleteOutputProperty(RROutputPtr output, Atom property) |
| 124 | { |
| 125 | RRPropertyRec *prop, **prev; |
| 126 | |
| 127 | for (prev = &output->properties; (prop = *prev); prev = &(prop->next)) |
| 128 | if (prop->propertyName == property) { |
| 129 | *prev = prop->next; |
| 130 | RRDeleteProperty(output, prop); |
| 131 | return; |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | int |
| 136 | RRChangeOutputProperty(RROutputPtr output, Atom property, Atom type, |
| 137 | int format, int mode, unsigned long len, |
| 138 | pointer value, Bool sendevent, Bool pending) |
| 139 | { |
| 140 | RRPropertyPtr prop; |
| 141 | rrScrPrivPtr pScrPriv = rrGetScrPriv(output->pScreen); |
| 142 | int size_in_bytes; |
| 143 | int total_size; |
| 144 | unsigned long total_len; |
| 145 | RRPropertyValuePtr prop_value; |
| 146 | RRPropertyValueRec new_value; |
| 147 | Bool add = FALSE; |
| 148 | |
| 149 | size_in_bytes = format >> 3; |
| 150 | |
| 151 | /* first see if property already exists */ |
| 152 | prop = RRQueryOutputProperty(output, property); |
| 153 | if (!prop) { /* just add to list */ |
| 154 | prop = RRCreateOutputProperty(property); |
| 155 | if (!prop) |
| 156 | return BadAlloc; |
| 157 | add = TRUE; |
| 158 | mode = PropModeReplace; |
| 159 | } |
| 160 | if (pending && prop->is_pending) |
| 161 | prop_value = &prop->pending; |
| 162 | else |
| 163 | prop_value = &prop->current; |
| 164 | |
| 165 | /* To append or prepend to a property the request format and type |
| 166 | must match those of the already defined property. The |
| 167 | existing format and type are irrelevant when using the mode |
| 168 | "PropModeReplace" since they will be written over. */ |
| 169 | |
| 170 | if ((format != prop_value->format) && (mode != PropModeReplace)) |
| 171 | return BadMatch; |
| 172 | if ((prop_value->type != type) && (mode != PropModeReplace)) |
| 173 | return BadMatch; |
| 174 | new_value = *prop_value; |
| 175 | if (mode == PropModeReplace) |
| 176 | total_len = len; |
| 177 | else |
| 178 | total_len = prop_value->size + len; |
| 179 | |
| 180 | if (mode == PropModeReplace || len > 0) { |
| 181 | pointer new_data = NULL, old_data = NULL; |
| 182 | |
| 183 | total_size = total_len * size_in_bytes; |
| 184 | new_value.data = (pointer) malloc(total_size); |
| 185 | if (!new_value.data && total_size) { |
| 186 | if (add) |
| 187 | RRDestroyOutputProperty(prop); |
| 188 | return BadAlloc; |
| 189 | } |
| 190 | new_value.size = len; |
| 191 | new_value.type = type; |
| 192 | new_value.format = format; |
| 193 | |
| 194 | switch (mode) { |
| 195 | case PropModeReplace: |
| 196 | new_data = new_value.data; |
| 197 | old_data = NULL; |
| 198 | break; |
| 199 | case PropModeAppend: |
| 200 | new_data = (pointer) (((char *) new_value.data) + |
| 201 | (prop_value->size * size_in_bytes)); |
| 202 | old_data = new_value.data; |
| 203 | break; |
| 204 | case PropModePrepend: |
| 205 | new_data = new_value.data; |
| 206 | old_data = (pointer) (((char *) new_value.data) + |
| 207 | (prop_value->size * size_in_bytes)); |
| 208 | break; |
| 209 | } |
| 210 | if (new_data) |
| 211 | memcpy((char *) new_data, (char *) value, len * size_in_bytes); |
| 212 | if (old_data) |
| 213 | memcpy((char *) old_data, (char *) prop_value->data, |
| 214 | prop_value->size * size_in_bytes); |
| 215 | |
| 216 | if (pending && pScrPriv->rrOutputSetProperty && |
| 217 | !pScrPriv->rrOutputSetProperty(output->pScreen, output, |
| 218 | prop->propertyName, &new_value)) { |
| 219 | free(new_value.data); |
| 220 | if (add) |
| 221 | RRDestroyOutputProperty(prop); |
| 222 | return BadValue; |
| 223 | } |
| 224 | free(prop_value->data); |
| 225 | *prop_value = new_value; |
| 226 | } |
| 227 | |
| 228 | else if (len == 0) { |
| 229 | /* do nothing */ |
| 230 | } |
| 231 | |
| 232 | if (add) { |
| 233 | prop->next = output->properties; |
| 234 | output->properties = prop; |
| 235 | } |
| 236 | |
| 237 | if (pending && prop->is_pending) |
| 238 | output->pendingProperties = TRUE; |
| 239 | |
| 240 | if (sendevent) { |
| 241 | xRROutputPropertyNotifyEvent event = { |
| 242 | .type = RREventBase + RRNotify, |
| 243 | .subCode = RRNotify_OutputProperty, |
| 244 | .output = output->id, |
| 245 | .state = PropertyNewValue, |
| 246 | .atom = prop->propertyName, |
| 247 | .timestamp = currentTime.milliseconds |
| 248 | }; |
| 249 | RRDeliverPropertyEvent(output->pScreen, (xEvent *) &event); |
| 250 | } |
| 251 | return Success; |
| 252 | } |
| 253 | |
| 254 | Bool |
| 255 | RRPostPendingProperties(RROutputPtr output) |
| 256 | { |
| 257 | RRPropertyValuePtr pending_value; |
| 258 | RRPropertyValuePtr current_value; |
| 259 | RRPropertyPtr property; |
| 260 | Bool ret = TRUE; |
| 261 | |
| 262 | if (!output->pendingProperties) |
| 263 | return TRUE; |
| 264 | |
| 265 | output->pendingProperties = FALSE; |
| 266 | for (property = output->properties; property; property = property->next) { |
| 267 | /* Skip non-pending properties */ |
| 268 | if (!property->is_pending) |
| 269 | continue; |
| 270 | |
| 271 | pending_value = &property->pending; |
| 272 | current_value = &property->current; |
| 273 | |
| 274 | /* |
| 275 | * If the pending and current values are equal, don't mark it |
| 276 | * as changed (which would deliver an event) |
| 277 | */ |
| 278 | if (pending_value->type == current_value->type && |
| 279 | pending_value->format == current_value->format && |
| 280 | pending_value->size == current_value->size && |
| 281 | !memcmp(pending_value->data, current_value->data, |
| 282 | pending_value->size * (pending_value->format / 8))) |
| 283 | continue; |
| 284 | |
| 285 | if (RRChangeOutputProperty(output, property->propertyName, |
| 286 | pending_value->type, pending_value->format, |
| 287 | PropModeReplace, pending_value->size, |
| 288 | pending_value->data, TRUE, FALSE) != Success) |
| 289 | ret = FALSE; |
| 290 | } |
| 291 | return ret; |
| 292 | } |
| 293 | |
| 294 | RRPropertyPtr |
| 295 | RRQueryOutputProperty(RROutputPtr output, Atom property) |
| 296 | { |
| 297 | RRPropertyPtr prop; |
| 298 | |
| 299 | for (prop = output->properties; prop; prop = prop->next) |
| 300 | if (prop->propertyName == property) |
| 301 | return prop; |
| 302 | return NULL; |
| 303 | } |
| 304 | |
| 305 | RRPropertyValuePtr |
| 306 | RRGetOutputProperty(RROutputPtr output, Atom property, Bool pending) |
| 307 | { |
| 308 | RRPropertyPtr prop = RRQueryOutputProperty(output, property); |
| 309 | rrScrPrivPtr pScrPriv = rrGetScrPriv(output->pScreen); |
| 310 | |
| 311 | if (!prop) |
| 312 | return NULL; |
| 313 | if (pending && prop->is_pending) |
| 314 | return &prop->pending; |
| 315 | else { |
| 316 | #if RANDR_13_INTERFACE |
| 317 | /* If we can, try to update the property value first */ |
| 318 | if (pScrPriv->rrOutputGetProperty) |
| 319 | pScrPriv->rrOutputGetProperty(output->pScreen, output, |
| 320 | prop->propertyName); |
| 321 | #endif |
| 322 | return &prop->current; |
| 323 | } |
| 324 | } |
| 325 | |
| 326 | int |
| 327 | RRConfigureOutputProperty(RROutputPtr output, Atom property, |
| 328 | Bool pending, Bool range, Bool immutable, |
| 329 | int num_values, INT32 *values) |
| 330 | { |
| 331 | RRPropertyPtr prop = RRQueryOutputProperty(output, property); |
| 332 | Bool add = FALSE; |
| 333 | INT32 *new_values; |
| 334 | |
| 335 | if (!prop) { |
| 336 | prop = RRCreateOutputProperty(property); |
| 337 | if (!prop) |
| 338 | return BadAlloc; |
| 339 | add = TRUE; |
| 340 | } |
| 341 | else if (prop->immutable && !immutable) |
| 342 | return BadAccess; |
| 343 | |
| 344 | /* |
| 345 | * ranges must have even number of values |
| 346 | */ |
| 347 | if (range && (num_values & 1)) { |
| 348 | if (add) |
| 349 | RRDestroyOutputProperty(prop); |
| 350 | return BadMatch; |
| 351 | } |
| 352 | |
| 353 | new_values = malloc(num_values * sizeof(INT32)); |
| 354 | if (!new_values && num_values) { |
| 355 | if (add) |
| 356 | RRDestroyOutputProperty(prop); |
| 357 | return BadAlloc; |
| 358 | } |
| 359 | if (num_values) |
| 360 | memcpy(new_values, values, num_values * sizeof(INT32)); |
| 361 | |
| 362 | /* |
| 363 | * Property moving from pending to non-pending |
| 364 | * loses any pending values |
| 365 | */ |
| 366 | if (prop->is_pending && !pending) { |
| 367 | free(prop->pending.data); |
| 368 | RRInitOutputPropertyValue(&prop->pending); |
| 369 | } |
| 370 | |
| 371 | prop->is_pending = pending; |
| 372 | prop->range = range; |
| 373 | prop->immutable = immutable; |
| 374 | prop->num_valid = num_values; |
| 375 | free(prop->valid_values); |
| 376 | prop->valid_values = new_values; |
| 377 | |
| 378 | if (add) { |
| 379 | prop->next = output->properties; |
| 380 | output->properties = prop; |
| 381 | } |
| 382 | |
| 383 | return Success; |
| 384 | } |
| 385 | |
| 386 | int |
| 387 | ProcRRListOutputProperties(ClientPtr client) |
| 388 | { |
| 389 | REQUEST(xRRListOutputPropertiesReq); |
| 390 | Atom *pAtoms = NULL; |
| 391 | xRRListOutputPropertiesReply rep; |
| 392 | int numProps = 0; |
| 393 | RROutputPtr output; |
| 394 | RRPropertyPtr prop; |
| 395 | |
| 396 | REQUEST_SIZE_MATCH(xRRListOutputPropertiesReq); |
| 397 | |
| 398 | VERIFY_RR_OUTPUT(stuff->output, output, DixReadAccess); |
| 399 | |
| 400 | for (prop = output->properties; prop; prop = prop->next) |
| 401 | numProps++; |
| 402 | if (numProps) |
| 403 | if (!(pAtoms = (Atom *) malloc(numProps * sizeof(Atom)))) |
| 404 | return BadAlloc; |
| 405 | |
| 406 | rep = (xRRListOutputPropertiesReply) { |
| 407 | .type = X_Reply, |
| 408 | .sequenceNumber = client->sequence, |
| 409 | .length = bytes_to_int32(numProps * sizeof(Atom)), |
| 410 | .nAtoms = numProps |
| 411 | }; |
| 412 | if (client->swapped) { |
| 413 | swaps(&rep.sequenceNumber); |
| 414 | swapl(&rep.length); |
| 415 | swaps(&rep.nAtoms); |
| 416 | } |
| 417 | WriteToClient(client, sizeof(xRRListOutputPropertiesReply), &rep); |
| 418 | |
| 419 | if (numProps) { |
| 420 | /* Copy property name atoms to reply buffer */ |
| 421 | Atom *temppAtoms = pAtoms; |
| 422 | for (prop = output->properties; prop; prop = prop->next) |
| 423 | *temppAtoms++ = prop->propertyName; |
| 424 | |
| 425 | client->pSwapReplyFunc = (ReplySwapPtr) Swap32Write; |
| 426 | WriteSwappedDataToClient(client, numProps * sizeof(Atom), pAtoms); |
| 427 | free(pAtoms); |
| 428 | } |
| 429 | return Success; |
| 430 | } |
| 431 | |
| 432 | int |
| 433 | ProcRRQueryOutputProperty(ClientPtr client) |
| 434 | { |
| 435 | REQUEST(xRRQueryOutputPropertyReq); |
| 436 | xRRQueryOutputPropertyReply rep; |
| 437 | RROutputPtr output; |
| 438 | RRPropertyPtr prop; |
| 439 | char *extra = NULL; |
| 440 | |
| 441 | REQUEST_SIZE_MATCH(xRRQueryOutputPropertyReq); |
| 442 | |
| 443 | VERIFY_RR_OUTPUT(stuff->output, output, DixReadAccess); |
| 444 | |
| 445 | prop = RRQueryOutputProperty(output, stuff->property); |
| 446 | if (!prop) |
| 447 | return BadName; |
| 448 | |
| 449 | if (prop->num_valid) { |
| 450 | extra = malloc(prop->num_valid * sizeof(INT32)); |
| 451 | if (!extra) |
| 452 | return BadAlloc; |
| 453 | } |
| 454 | |
| 455 | rep = (xRRQueryOutputPropertyReply) { |
| 456 | .type = X_Reply, |
| 457 | .sequenceNumber = client->sequence, |
| 458 | .length = prop->num_valid, |
| 459 | .pending = prop->is_pending, |
| 460 | .range = prop->range, |
| 461 | .immutable = prop->immutable |
| 462 | }; |
| 463 | |
| 464 | if (client->swapped) { |
| 465 | swaps(&rep.sequenceNumber); |
| 466 | swapl(&rep.length); |
| 467 | } |
| 468 | WriteToClient(client, sizeof(xRRQueryOutputPropertyReply), &rep); |
| 469 | if (prop->num_valid) { |
| 470 | memcpy(extra, prop->valid_values, prop->num_valid * sizeof(INT32)); |
| 471 | client->pSwapReplyFunc = (ReplySwapPtr) Swap32Write; |
| 472 | WriteSwappedDataToClient(client, prop->num_valid * sizeof(INT32), |
| 473 | extra); |
| 474 | free(extra); |
| 475 | } |
| 476 | return Success; |
| 477 | } |
| 478 | |
| 479 | int |
| 480 | ProcRRConfigureOutputProperty(ClientPtr client) |
| 481 | { |
| 482 | REQUEST(xRRConfigureOutputPropertyReq); |
| 483 | RROutputPtr output; |
| 484 | int num_valid; |
| 485 | |
| 486 | REQUEST_AT_LEAST_SIZE(xRRConfigureOutputPropertyReq); |
| 487 | |
| 488 | VERIFY_RR_OUTPUT(stuff->output, output, DixReadAccess); |
| 489 | |
| 490 | num_valid = |
| 491 | stuff->length - bytes_to_int32(sizeof(xRRConfigureOutputPropertyReq)); |
| 492 | return RRConfigureOutputProperty(output, stuff->property, stuff->pending, |
| 493 | stuff->range, FALSE, num_valid, |
| 494 | (INT32 *) (stuff + 1)); |
| 495 | } |
| 496 | |
| 497 | int |
| 498 | ProcRRChangeOutputProperty(ClientPtr client) |
| 499 | { |
| 500 | REQUEST(xRRChangeOutputPropertyReq); |
| 501 | RROutputPtr output; |
| 502 | char format, mode; |
| 503 | unsigned long len; |
| 504 | int sizeInBytes; |
| 505 | int totalSize; |
| 506 | int err; |
| 507 | |
| 508 | REQUEST_AT_LEAST_SIZE(xRRChangeOutputPropertyReq); |
| 509 | UpdateCurrentTime(); |
| 510 | format = stuff->format; |
| 511 | mode = stuff->mode; |
| 512 | if ((mode != PropModeReplace) && (mode != PropModeAppend) && |
| 513 | (mode != PropModePrepend)) { |
| 514 | client->errorValue = mode; |
| 515 | return BadValue; |
| 516 | } |
| 517 | if ((format != 8) && (format != 16) && (format != 32)) { |
| 518 | client->errorValue = format; |
| 519 | return BadValue; |
| 520 | } |
| 521 | len = stuff->nUnits; |
| 522 | if (len > bytes_to_int32((0xffffffff - sizeof(xChangePropertyReq)))) |
| 523 | return BadLength; |
| 524 | sizeInBytes = format >> 3; |
| 525 | totalSize = len * sizeInBytes; |
| 526 | REQUEST_FIXED_SIZE(xRRChangeOutputPropertyReq, totalSize); |
| 527 | |
| 528 | VERIFY_RR_OUTPUT(stuff->output, output, DixReadAccess); |
| 529 | |
| 530 | if (!ValidAtom(stuff->property)) { |
| 531 | client->errorValue = stuff->property; |
| 532 | return BadAtom; |
| 533 | } |
| 534 | if (!ValidAtom(stuff->type)) { |
| 535 | client->errorValue = stuff->type; |
| 536 | return BadAtom; |
| 537 | } |
| 538 | |
| 539 | err = RRChangeOutputProperty(output, stuff->property, |
| 540 | stuff->type, (int) format, |
| 541 | (int) mode, len, (pointer) &stuff[1], TRUE, |
| 542 | TRUE); |
| 543 | if (err != Success) |
| 544 | return err; |
| 545 | else |
| 546 | return Success; |
| 547 | } |
| 548 | |
| 549 | int |
| 550 | ProcRRDeleteOutputProperty(ClientPtr client) |
| 551 | { |
| 552 | REQUEST(xRRDeleteOutputPropertyReq); |
| 553 | RROutputPtr output; |
| 554 | RRPropertyPtr prop; |
| 555 | |
| 556 | REQUEST_SIZE_MATCH(xRRDeleteOutputPropertyReq); |
| 557 | UpdateCurrentTime(); |
| 558 | VERIFY_RR_OUTPUT(stuff->output, output, DixReadAccess); |
| 559 | |
| 560 | if (!ValidAtom(stuff->property)) { |
| 561 | client->errorValue = stuff->property; |
| 562 | return BadAtom; |
| 563 | } |
| 564 | |
| 565 | prop = RRQueryOutputProperty(output, stuff->property); |
| 566 | if (!prop) { |
| 567 | client->errorValue = stuff->property; |
| 568 | return BadName; |
| 569 | } |
| 570 | |
| 571 | if (prop->immutable) { |
| 572 | client->errorValue = stuff->property; |
| 573 | return BadAccess; |
| 574 | } |
| 575 | |
| 576 | RRDeleteOutputProperty(output, stuff->property); |
| 577 | return Success; |
| 578 | } |
| 579 | |
| 580 | int |
| 581 | ProcRRGetOutputProperty(ClientPtr client) |
| 582 | { |
| 583 | REQUEST(xRRGetOutputPropertyReq); |
| 584 | RRPropertyPtr prop, *prev; |
| 585 | RRPropertyValuePtr prop_value; |
| 586 | unsigned long n, len, ind; |
| 587 | RROutputPtr output; |
| 588 | xRRGetOutputPropertyReply reply; |
| 589 | char *extra = NULL; |
| 590 | |
| 591 | REQUEST_SIZE_MATCH(xRRGetOutputPropertyReq); |
| 592 | if (stuff->delete) |
| 593 | UpdateCurrentTime(); |
| 594 | VERIFY_RR_OUTPUT(stuff->output, output, |
| 595 | stuff->delete ? DixWriteAccess : DixReadAccess); |
| 596 | |
| 597 | if (!ValidAtom(stuff->property)) { |
| 598 | client->errorValue = stuff->property; |
| 599 | return BadAtom; |
| 600 | } |
| 601 | if ((stuff->delete != xTrue) && (stuff->delete != xFalse)) { |
| 602 | client->errorValue = stuff->delete; |
| 603 | return BadValue; |
| 604 | } |
| 605 | if ((stuff->type != AnyPropertyType) && !ValidAtom(stuff->type)) { |
| 606 | client->errorValue = stuff->type; |
| 607 | return BadAtom; |
| 608 | } |
| 609 | |
| 610 | for (prev = &output->properties; (prop = *prev); prev = &prop->next) |
| 611 | if (prop->propertyName == stuff->property) |
| 612 | break; |
| 613 | |
| 614 | reply = (xRRGetOutputPropertyReply) { |
| 615 | .type = X_Reply, |
| 616 | .sequenceNumber = client->sequence |
| 617 | }; |
| 618 | if (!prop) { |
| 619 | reply.nItems = 0; |
| 620 | reply.length = 0; |
| 621 | reply.bytesAfter = 0; |
| 622 | reply.propertyType = None; |
| 623 | reply.format = 0; |
| 624 | if (client->swapped) { |
| 625 | swaps(&reply.sequenceNumber); |
| 626 | swapl(&reply.length); |
| 627 | swapl(&reply.propertyType); |
| 628 | swapl(&reply.bytesAfter); |
| 629 | swapl(&reply.nItems); |
| 630 | } |
| 631 | WriteToClient(client, sizeof(xRRGetOutputPropertyReply), &reply); |
| 632 | return Success; |
| 633 | } |
| 634 | |
| 635 | if (prop->immutable && stuff->delete) |
| 636 | return BadAccess; |
| 637 | |
| 638 | prop_value = RRGetOutputProperty(output, stuff->property, stuff->pending); |
| 639 | if (!prop_value) |
| 640 | return BadAtom; |
| 641 | |
| 642 | /* If the request type and actual type don't match. Return the |
| 643 | property information, but not the data. */ |
| 644 | |
| 645 | if (((stuff->type != prop_value->type) && (stuff->type != AnyPropertyType)) |
| 646 | ) { |
| 647 | reply.bytesAfter = prop_value->size; |
| 648 | reply.format = prop_value->format; |
| 649 | reply.length = 0; |
| 650 | reply.nItems = 0; |
| 651 | reply.propertyType = prop_value->type; |
| 652 | if (client->swapped) { |
| 653 | swaps(&reply.sequenceNumber); |
| 654 | swapl(&reply.length); |
| 655 | swapl(&reply.propertyType); |
| 656 | swapl(&reply.bytesAfter); |
| 657 | swapl(&reply.nItems); |
| 658 | } |
| 659 | WriteToClient(client, sizeof(xRRGetOutputPropertyReply), &reply); |
| 660 | return Success; |
| 661 | } |
| 662 | |
| 663 | /* |
| 664 | * Return type, format, value to client |
| 665 | */ |
| 666 | n = (prop_value->format / 8) * prop_value->size; /* size (bytes) of prop */ |
| 667 | ind = stuff->longOffset << 2; |
| 668 | |
| 669 | /* If longOffset is invalid such that it causes "len" to |
| 670 | be negative, it's a value error. */ |
| 671 | |
| 672 | if (n < ind) { |
| 673 | client->errorValue = stuff->longOffset; |
| 674 | return BadValue; |
| 675 | } |
| 676 | |
| 677 | len = min(n - ind, 4 * stuff->longLength); |
| 678 | |
| 679 | if (len) { |
| 680 | extra = malloc(len); |
| 681 | if (!extra) |
| 682 | return BadAlloc; |
| 683 | } |
| 684 | reply.bytesAfter = n - (ind + len); |
| 685 | reply.format = prop_value->format; |
| 686 | reply.length = bytes_to_int32(len); |
| 687 | if (prop_value->format) |
| 688 | reply.nItems = len / (prop_value->format / 8); |
| 689 | else |
| 690 | reply.nItems = 0; |
| 691 | reply.propertyType = prop_value->type; |
| 692 | |
| 693 | if (stuff->delete && (reply.bytesAfter == 0)) { |
| 694 | xRROutputPropertyNotifyEvent event = { |
| 695 | .type = RREventBase + RRNotify, |
| 696 | .subCode = RRNotify_OutputProperty, |
| 697 | .output = output->id, |
| 698 | .state = PropertyDelete, |
| 699 | .atom = prop->propertyName, |
| 700 | .timestamp = currentTime.milliseconds |
| 701 | }; |
| 702 | RRDeliverPropertyEvent(output->pScreen, (xEvent *) &event); |
| 703 | } |
| 704 | |
| 705 | if (client->swapped) { |
| 706 | swaps(&reply.sequenceNumber); |
| 707 | swapl(&reply.length); |
| 708 | swapl(&reply.propertyType); |
| 709 | swapl(&reply.bytesAfter); |
| 710 | swapl(&reply.nItems); |
| 711 | } |
| 712 | WriteToClient(client, sizeof(xGenericReply), &reply); |
| 713 | if (len) { |
| 714 | memcpy(extra, (char *) prop_value->data + ind, len); |
| 715 | switch (reply.format) { |
| 716 | case 32: |
| 717 | client->pSwapReplyFunc = (ReplySwapPtr) CopySwap32Write; |
| 718 | break; |
| 719 | case 16: |
| 720 | client->pSwapReplyFunc = (ReplySwapPtr) CopySwap16Write; |
| 721 | break; |
| 722 | default: |
| 723 | client->pSwapReplyFunc = (ReplySwapPtr) WriteToClient; |
| 724 | break; |
| 725 | } |
| 726 | WriteSwappedDataToClient(client, len, extra); |
| 727 | free(extra); |
| 728 | } |
| 729 | |
| 730 | if (stuff->delete && (reply.bytesAfter == 0)) { /* delete the Property */ |
| 731 | *prev = prop->next; |
| 732 | RRDestroyOutputProperty(prop); |
| 733 | } |
| 734 | return Success; |
| 735 | } |