San Mehat | a430b2b | 2014-09-23 08:30:51 -0700 | [diff] [blame] | 1 | /* |
| 2 | * rfbserver.c - deal with server-side of the RFB protocol. |
| 3 | */ |
| 4 | |
| 5 | /* |
| 6 | * Copyright (C) 2011-2012 D. R. Commander |
| 7 | * Copyright (C) 2005 Rohit Kumar, Johannes E. Schindelin |
| 8 | * Copyright (C) 2002 RealVNC Ltd. |
| 9 | * OSXvnc Copyright (C) 2001 Dan McGuirk <mcguirk@incompleteness.net>. |
| 10 | * Original Xvnc code Copyright (C) 1999 AT&T Laboratories Cambridge. |
| 11 | * All Rights Reserved. |
| 12 | * |
| 13 | * This is free software; you can redistribute it and/or modify |
| 14 | * it under the terms of the GNU General Public License as published by |
| 15 | * the Free Software Foundation; either version 2 of the License, or |
| 16 | * (at your option) any later version. |
| 17 | * |
| 18 | * This software is distributed in the hope that it will be useful, |
| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 21 | * GNU General Public License for more details. |
| 22 | * |
| 23 | * You should have received a copy of the GNU General Public License |
| 24 | * along with this software; if not, write to the Free Software |
| 25 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
| 26 | * USA. |
| 27 | */ |
| 28 | |
| 29 | #ifdef __STRICT_ANSI__ |
| 30 | #define _BSD_SOURCE |
| 31 | #endif |
| 32 | #include <string.h> |
| 33 | #include <rfb/rfb.h> |
| 34 | #include <rfb/rfbregion.h> |
| 35 | #include "private.h" |
| 36 | |
| 37 | #ifdef LIBVNCSERVER_HAVE_FCNTL_H |
| 38 | #include <fcntl.h> |
| 39 | #endif |
| 40 | |
| 41 | #ifdef WIN32 |
| 42 | #define write(sock,buf,len) send(sock,buf,len,0) |
| 43 | #else |
| 44 | #ifdef LIBVNCSERVER_HAVE_UNISTD_H |
| 45 | #include <unistd.h> |
| 46 | #endif |
| 47 | #include <pwd.h> |
| 48 | #ifdef LIBVNCSERVER_HAVE_SYS_SOCKET_H |
| 49 | #include <sys/socket.h> |
| 50 | #endif |
| 51 | #ifdef LIBVNCSERVER_HAVE_NETINET_IN_H |
| 52 | #include <netinet/in.h> |
| 53 | #include <netinet/tcp.h> |
| 54 | #include <netdb.h> |
| 55 | #include <arpa/inet.h> |
| 56 | #endif |
| 57 | #endif |
| 58 | |
| 59 | #ifdef DEBUGPROTO |
| 60 | #undef DEBUGPROTO |
| 61 | #define DEBUGPROTO(x) x |
| 62 | #else |
| 63 | #define DEBUGPROTO(x) |
| 64 | #endif |
| 65 | #include <stdarg.h> |
| 66 | #include <scale.h> |
| 67 | /* stst() */ |
| 68 | #include <sys/types.h> |
| 69 | #include <sys/stat.h> |
| 70 | #include <unistd.h> |
| 71 | /* readdir() */ |
| 72 | #include <dirent.h> |
| 73 | /* errno */ |
| 74 | #include <errno.h> |
| 75 | /* strftime() */ |
| 76 | #include <time.h> |
| 77 | |
| 78 | #ifdef LIBVNCSERVER_WITH_WEBSOCKETS |
| 79 | #include "rfbssl.h" |
| 80 | #endif |
| 81 | |
| 82 | #ifdef __MINGW32__ |
| 83 | static int compat_mkdir(const char *path, int mode) |
| 84 | { |
| 85 | return mkdir(path); |
| 86 | } |
| 87 | #define mkdir compat_mkdir |
| 88 | #endif |
| 89 | |
| 90 | #ifdef LIBVNCSERVER_HAVE_LIBJPEG |
| 91 | /* |
| 92 | * Map of quality levels to provide compatibility with TightVNC/TigerVNC |
| 93 | * clients. This emulates the behavior of the TigerVNC Server. |
| 94 | */ |
| 95 | |
| 96 | static const int tight2turbo_qual[10] = { |
| 97 | 15, 29, 41, 42, 62, 77, 79, 86, 92, 100 |
| 98 | }; |
| 99 | |
| 100 | static const int tight2turbo_subsamp[10] = { |
| 101 | 1, 1, 1, 2, 2, 2, 0, 0, 0, 0 |
| 102 | }; |
| 103 | #endif |
| 104 | |
| 105 | static void rfbProcessClientProtocolVersion(rfbClientPtr cl); |
| 106 | static void rfbProcessClientNormalMessage(rfbClientPtr cl); |
| 107 | static void rfbProcessClientInitMessage(rfbClientPtr cl); |
| 108 | |
| 109 | #ifdef LIBVNCSERVER_HAVE_LIBPTHREAD |
| 110 | void rfbIncrClientRef(rfbClientPtr cl) |
| 111 | { |
| 112 | LOCK(cl->refCountMutex); |
| 113 | cl->refCount++; |
| 114 | UNLOCK(cl->refCountMutex); |
| 115 | } |
| 116 | |
| 117 | void rfbDecrClientRef(rfbClientPtr cl) |
| 118 | { |
| 119 | LOCK(cl->refCountMutex); |
| 120 | cl->refCount--; |
| 121 | if(cl->refCount<=0) /* just to be sure also < 0 */ |
| 122 | TSIGNAL(cl->deleteCond); |
| 123 | UNLOCK(cl->refCountMutex); |
| 124 | } |
| 125 | #else |
| 126 | void rfbIncrClientRef(rfbClientPtr cl) {} |
| 127 | void rfbDecrClientRef(rfbClientPtr cl) {} |
| 128 | #endif |
| 129 | |
| 130 | #ifdef LIBVNCSERVER_HAVE_LIBPTHREAD |
| 131 | static MUTEX(rfbClientListMutex); |
| 132 | #endif |
| 133 | |
| 134 | struct rfbClientIterator { |
| 135 | rfbClientPtr next; |
| 136 | rfbScreenInfoPtr screen; |
| 137 | rfbBool closedToo; |
| 138 | }; |
| 139 | |
| 140 | void |
| 141 | rfbClientListInit(rfbScreenInfoPtr rfbScreen) |
| 142 | { |
| 143 | if(sizeof(rfbBool)!=1) { |
| 144 | /* a sanity check */ |
| 145 | fprintf(stderr,"rfbBool's size is not 1 (%d)!\n",(int)sizeof(rfbBool)); |
| 146 | /* we cannot continue, because rfbBool is supposed to be char everywhere */ |
| 147 | exit(1); |
| 148 | } |
| 149 | rfbScreen->clientHead = NULL; |
| 150 | INIT_MUTEX(rfbClientListMutex); |
| 151 | } |
| 152 | |
| 153 | rfbClientIteratorPtr |
| 154 | rfbGetClientIterator(rfbScreenInfoPtr rfbScreen) |
| 155 | { |
| 156 | rfbClientIteratorPtr i = |
| 157 | (rfbClientIteratorPtr)malloc(sizeof(struct rfbClientIterator)); |
| 158 | i->next = NULL; |
| 159 | i->screen = rfbScreen; |
| 160 | i->closedToo = FALSE; |
| 161 | return i; |
| 162 | } |
| 163 | |
| 164 | rfbClientIteratorPtr |
| 165 | rfbGetClientIteratorWithClosed(rfbScreenInfoPtr rfbScreen) |
| 166 | { |
| 167 | rfbClientIteratorPtr i = |
| 168 | (rfbClientIteratorPtr)malloc(sizeof(struct rfbClientIterator)); |
| 169 | i->next = NULL; |
| 170 | i->screen = rfbScreen; |
| 171 | i->closedToo = TRUE; |
| 172 | return i; |
| 173 | } |
| 174 | |
| 175 | rfbClientPtr |
| 176 | rfbClientIteratorHead(rfbClientIteratorPtr i) |
| 177 | { |
| 178 | #ifdef LIBVNCSERVER_HAVE_LIBPTHREAD |
| 179 | if(i->next != 0) { |
| 180 | rfbDecrClientRef(i->next); |
| 181 | rfbIncrClientRef(i->screen->clientHead); |
| 182 | } |
| 183 | #endif |
| 184 | LOCK(rfbClientListMutex); |
| 185 | i->next = i->screen->clientHead; |
| 186 | UNLOCK(rfbClientListMutex); |
| 187 | return i->next; |
| 188 | } |
| 189 | |
| 190 | rfbClientPtr |
| 191 | rfbClientIteratorNext(rfbClientIteratorPtr i) |
| 192 | { |
| 193 | if(i->next == 0) { |
| 194 | LOCK(rfbClientListMutex); |
| 195 | i->next = i->screen->clientHead; |
| 196 | UNLOCK(rfbClientListMutex); |
| 197 | } else { |
| 198 | IF_PTHREADS(rfbClientPtr cl = i->next); |
| 199 | i->next = i->next->next; |
| 200 | IF_PTHREADS(rfbDecrClientRef(cl)); |
| 201 | } |
| 202 | |
| 203 | #ifdef LIBVNCSERVER_HAVE_LIBPTHREAD |
| 204 | if(!i->closedToo) |
| 205 | while(i->next && i->next->sock<0) |
| 206 | i->next = i->next->next; |
| 207 | if(i->next) |
| 208 | rfbIncrClientRef(i->next); |
| 209 | #endif |
| 210 | |
| 211 | return i->next; |
| 212 | } |
| 213 | |
| 214 | void |
| 215 | rfbReleaseClientIterator(rfbClientIteratorPtr iterator) |
| 216 | { |
| 217 | IF_PTHREADS(if(iterator->next) rfbDecrClientRef(iterator->next)); |
| 218 | free(iterator); |
| 219 | } |
| 220 | |
| 221 | |
| 222 | /* |
| 223 | * rfbNewClientConnection is called from sockets.c when a new connection |
| 224 | * comes in. |
| 225 | */ |
| 226 | |
| 227 | void |
| 228 | rfbNewClientConnection(rfbScreenInfoPtr rfbScreen, |
| 229 | int sock) |
| 230 | { |
| 231 | rfbNewClient(rfbScreen,sock); |
| 232 | } |
| 233 | |
| 234 | |
| 235 | /* |
| 236 | * rfbReverseConnection is called to make an outward |
| 237 | * connection to a "listening" RFB client. |
| 238 | */ |
| 239 | |
| 240 | rfbClientPtr |
| 241 | rfbReverseConnection(rfbScreenInfoPtr rfbScreen, |
| 242 | char *host, |
| 243 | int port) |
| 244 | { |
| 245 | int sock; |
| 246 | rfbClientPtr cl; |
| 247 | |
| 248 | if ((sock = rfbConnect(rfbScreen, host, port)) < 0) |
| 249 | return (rfbClientPtr)NULL; |
| 250 | |
| 251 | cl = rfbNewClient(rfbScreen, sock); |
| 252 | |
| 253 | if (cl) { |
| 254 | cl->reverseConnection = TRUE; |
| 255 | } |
| 256 | |
| 257 | return cl; |
| 258 | } |
| 259 | |
| 260 | |
| 261 | void |
| 262 | rfbSetProtocolVersion(rfbScreenInfoPtr rfbScreen, int major_, int minor_) |
| 263 | { |
| 264 | /* Permit the server to set the version to report */ |
| 265 | /* TODO: sanity checking */ |
| 266 | if ((major_==3) && (minor_ > 2 && minor_ < 9)) |
| 267 | { |
| 268 | rfbScreen->protocolMajorVersion = major_; |
| 269 | rfbScreen->protocolMinorVersion = minor_; |
| 270 | } |
| 271 | else |
| 272 | rfbLog("rfbSetProtocolVersion(%d,%d) set to invalid values\n", major_, minor_); |
| 273 | } |
| 274 | |
| 275 | /* |
| 276 | * rfbNewClient is called when a new connection has been made by whatever |
| 277 | * means. |
| 278 | */ |
| 279 | |
| 280 | static rfbClientPtr |
| 281 | rfbNewTCPOrUDPClient(rfbScreenInfoPtr rfbScreen, |
| 282 | int sock, |
| 283 | rfbBool isUDP) |
| 284 | { |
| 285 | rfbProtocolVersionMsg pv; |
| 286 | rfbClientIteratorPtr iterator; |
| 287 | rfbClientPtr cl,cl_; |
| 288 | #ifdef LIBVNCSERVER_IPv6 |
| 289 | struct sockaddr_storage addr; |
| 290 | #else |
| 291 | struct sockaddr_in addr; |
| 292 | #endif |
| 293 | socklen_t addrlen = sizeof(addr); |
| 294 | rfbProtocolExtension* extension; |
| 295 | |
| 296 | cl = (rfbClientPtr)calloc(sizeof(rfbClientRec),1); |
| 297 | |
| 298 | cl->screen = rfbScreen; |
| 299 | cl->sock = sock; |
| 300 | cl->viewOnly = FALSE; |
| 301 | /* setup pseudo scaling */ |
| 302 | cl->scaledScreen = rfbScreen; |
| 303 | cl->scaledScreen->scaledScreenRefCount++; |
| 304 | |
| 305 | rfbResetStats(cl); |
| 306 | |
| 307 | cl->clientData = NULL; |
| 308 | cl->clientGoneHook = rfbDoNothingWithClient; |
| 309 | |
| 310 | if(isUDP) { |
| 311 | rfbLog(" accepted UDP client\n"); |
| 312 | } else { |
| 313 | int one=1; |
| 314 | |
| 315 | getpeername(sock, (struct sockaddr *)&addr, &addrlen); |
| 316 | #ifdef LIBVNCSERVER_IPv6 |
| 317 | char host[1024]; |
| 318 | if(getnameinfo((struct sockaddr*)&addr, addrlen, host, sizeof(host), NULL, 0, NI_NUMERICHOST) != 0) { |
| 319 | rfbLogPerror("rfbNewClient: error in getnameinfo"); |
| 320 | cl->host = strdup(""); |
| 321 | } |
| 322 | else |
| 323 | cl->host = strdup(host); |
| 324 | #else |
| 325 | cl->host = strdup(inet_ntoa(addr.sin_addr)); |
| 326 | #endif |
| 327 | |
| 328 | rfbLog(" other clients:\n"); |
| 329 | iterator = rfbGetClientIterator(rfbScreen); |
| 330 | while ((cl_ = rfbClientIteratorNext(iterator)) != NULL) { |
| 331 | rfbLog(" %s\n",cl_->host); |
| 332 | } |
| 333 | rfbReleaseClientIterator(iterator); |
| 334 | |
| 335 | if(!rfbSetNonBlocking(sock)) { |
| 336 | close(sock); |
| 337 | return NULL; |
| 338 | } |
| 339 | |
| 340 | if (setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, |
| 341 | (char *)&one, sizeof(one)) < 0) { |
| 342 | rfbLogPerror("setsockopt failed"); |
| 343 | close(sock); |
| 344 | return NULL; |
| 345 | } |
| 346 | |
| 347 | FD_SET(sock,&(rfbScreen->allFds)); |
| 348 | rfbScreen->maxFd = max(sock,rfbScreen->maxFd); |
| 349 | |
| 350 | INIT_MUTEX(cl->outputMutex); |
| 351 | INIT_MUTEX(cl->refCountMutex); |
| 352 | INIT_MUTEX(cl->sendMutex); |
| 353 | INIT_COND(cl->deleteCond); |
| 354 | |
| 355 | cl->state = RFB_PROTOCOL_VERSION; |
| 356 | |
| 357 | cl->reverseConnection = FALSE; |
| 358 | cl->readyForSetColourMapEntries = FALSE; |
| 359 | cl->useCopyRect = FALSE; |
| 360 | cl->preferredEncoding = -1; |
| 361 | cl->correMaxWidth = 48; |
| 362 | cl->correMaxHeight = 48; |
| 363 | #ifdef LIBVNCSERVER_HAVE_LIBZ |
| 364 | cl->zrleData = NULL; |
| 365 | #endif |
| 366 | |
| 367 | cl->copyRegion = sraRgnCreate(); |
| 368 | cl->copyDX = 0; |
| 369 | cl->copyDY = 0; |
| 370 | |
| 371 | cl->modifiedRegion = |
| 372 | sraRgnCreateRect(0,0,rfbScreen->width,rfbScreen->height); |
| 373 | |
| 374 | INIT_MUTEX(cl->updateMutex); |
| 375 | INIT_COND(cl->updateCond); |
| 376 | |
| 377 | cl->requestedRegion = sraRgnCreate(); |
| 378 | |
| 379 | cl->format = cl->screen->serverFormat; |
| 380 | cl->translateFn = rfbTranslateNone; |
| 381 | cl->translateLookupTable = NULL; |
| 382 | |
| 383 | LOCK(rfbClientListMutex); |
| 384 | |
| 385 | IF_PTHREADS(cl->refCount = 0); |
| 386 | cl->next = rfbScreen->clientHead; |
| 387 | cl->prev = NULL; |
| 388 | if (rfbScreen->clientHead) |
| 389 | rfbScreen->clientHead->prev = cl; |
| 390 | |
| 391 | rfbScreen->clientHead = cl; |
| 392 | UNLOCK(rfbClientListMutex); |
| 393 | |
| 394 | #if defined(LIBVNCSERVER_HAVE_LIBZ) || defined(LIBVNCSERVER_HAVE_LIBPNG) |
| 395 | cl->tightQualityLevel = -1; |
| 396 | #ifdef LIBVNCSERVER_HAVE_LIBJPEG |
| 397 | cl->tightCompressLevel = TIGHT_DEFAULT_COMPRESSION; |
| 398 | cl->turboSubsampLevel = TURBO_DEFAULT_SUBSAMP; |
| 399 | { |
| 400 | int i; |
| 401 | for (i = 0; i < 4; i++) |
| 402 | cl->zsActive[i] = FALSE; |
| 403 | } |
| 404 | #endif |
| 405 | #endif |
| 406 | |
| 407 | cl->fileTransfer.fd = -1; |
| 408 | |
| 409 | cl->enableCursorShapeUpdates = FALSE; |
| 410 | cl->enableCursorPosUpdates = FALSE; |
| 411 | cl->useRichCursorEncoding = FALSE; |
| 412 | cl->enableLastRectEncoding = FALSE; |
| 413 | cl->enableKeyboardLedState = FALSE; |
| 414 | cl->enableSupportedMessages = FALSE; |
| 415 | cl->enableSupportedEncodings = FALSE; |
| 416 | cl->enableServerIdentity = FALSE; |
| 417 | cl->lastKeyboardLedState = -1; |
| 418 | cl->cursorX = rfbScreen->cursorX; |
| 419 | cl->cursorY = rfbScreen->cursorY; |
| 420 | cl->useNewFBSize = FALSE; |
| 421 | |
| 422 | #ifdef LIBVNCSERVER_HAVE_LIBZ |
| 423 | cl->compStreamInited = FALSE; |
| 424 | cl->compStream.total_in = 0; |
| 425 | cl->compStream.total_out = 0; |
| 426 | cl->compStream.zalloc = Z_NULL; |
| 427 | cl->compStream.zfree = Z_NULL; |
| 428 | cl->compStream.opaque = Z_NULL; |
| 429 | |
| 430 | cl->zlibCompressLevel = 5; |
| 431 | #endif |
| 432 | |
| 433 | cl->progressiveSliceY = 0; |
| 434 | |
| 435 | cl->extensions = NULL; |
| 436 | |
| 437 | cl->lastPtrX = -1; |
| 438 | |
| 439 | #ifdef LIBVNCSERVER_WITH_WEBSOCKETS |
| 440 | /* |
| 441 | * Wait a few ms for the client to send one of: |
| 442 | * - Flash policy request |
| 443 | * - WebSockets connection (TLS/SSL or plain) |
| 444 | */ |
| 445 | if (!webSocketsCheck(cl)) { |
| 446 | /* Error reporting handled in webSocketsHandshake */ |
| 447 | rfbCloseClient(cl); |
| 448 | rfbClientConnectionGone(cl); |
| 449 | return NULL; |
| 450 | } |
| 451 | #endif |
| 452 | |
| 453 | sprintf(pv,rfbProtocolVersionFormat,rfbScreen->protocolMajorVersion, |
| 454 | rfbScreen->protocolMinorVersion); |
| 455 | |
| 456 | if (rfbWriteExact(cl, pv, sz_rfbProtocolVersionMsg) < 0) { |
| 457 | rfbLogPerror("rfbNewClient: write"); |
| 458 | rfbCloseClient(cl); |
| 459 | rfbClientConnectionGone(cl); |
| 460 | return NULL; |
| 461 | } |
| 462 | } |
| 463 | |
| 464 | for(extension = rfbGetExtensionIterator(); extension; |
| 465 | extension=extension->next) { |
| 466 | void* data = NULL; |
| 467 | /* if the extension does not have a newClient method, it wants |
| 468 | * to be initialized later. */ |
| 469 | if(extension->newClient && extension->newClient(cl, &data)) |
| 470 | rfbEnableExtension(cl, extension, data); |
| 471 | } |
| 472 | rfbReleaseExtensionIterator(); |
| 473 | |
| 474 | switch (cl->screen->newClientHook(cl)) { |
| 475 | case RFB_CLIENT_ON_HOLD: |
| 476 | cl->onHold = TRUE; |
| 477 | break; |
| 478 | case RFB_CLIENT_ACCEPT: |
| 479 | cl->onHold = FALSE; |
| 480 | break; |
| 481 | case RFB_CLIENT_REFUSE: |
| 482 | rfbCloseClient(cl); |
| 483 | rfbClientConnectionGone(cl); |
| 484 | cl = NULL; |
| 485 | break; |
| 486 | } |
| 487 | return cl; |
| 488 | } |
| 489 | |
| 490 | rfbClientPtr |
| 491 | rfbNewClient(rfbScreenInfoPtr rfbScreen, |
| 492 | int sock) |
| 493 | { |
| 494 | return(rfbNewTCPOrUDPClient(rfbScreen,sock,FALSE)); |
| 495 | } |
| 496 | |
| 497 | rfbClientPtr |
| 498 | rfbNewUDPClient(rfbScreenInfoPtr rfbScreen) |
| 499 | { |
| 500 | return((rfbScreen->udpClient= |
| 501 | rfbNewTCPOrUDPClient(rfbScreen,rfbScreen->udpSock,TRUE))); |
| 502 | } |
| 503 | |
| 504 | /* |
| 505 | * rfbClientConnectionGone is called from sockets.c just after a connection |
| 506 | * has gone away. |
| 507 | */ |
| 508 | |
| 509 | void |
| 510 | rfbClientConnectionGone(rfbClientPtr cl) |
| 511 | { |
| 512 | #if defined(LIBVNCSERVER_HAVE_LIBZ) && defined(LIBVNCSERVER_HAVE_LIBJPEG) |
| 513 | int i; |
| 514 | #endif |
| 515 | |
| 516 | LOCK(rfbClientListMutex); |
| 517 | |
| 518 | if (cl->prev) |
| 519 | cl->prev->next = cl->next; |
| 520 | else |
| 521 | cl->screen->clientHead = cl->next; |
| 522 | if (cl->next) |
| 523 | cl->next->prev = cl->prev; |
| 524 | |
| 525 | UNLOCK(rfbClientListMutex); |
| 526 | |
| 527 | #ifdef LIBVNCSERVER_HAVE_LIBPTHREAD |
| 528 | if(cl->screen->backgroundLoop != FALSE) { |
| 529 | int i; |
| 530 | do { |
| 531 | LOCK(cl->refCountMutex); |
| 532 | i=cl->refCount; |
| 533 | if(i>0) |
| 534 | WAIT(cl->deleteCond,cl->refCountMutex); |
| 535 | UNLOCK(cl->refCountMutex); |
| 536 | } while(i>0); |
| 537 | } |
| 538 | #endif |
| 539 | |
| 540 | if(cl->sock>=0) |
| 541 | close(cl->sock); |
| 542 | |
| 543 | if (cl->scaledScreen!=NULL) |
| 544 | cl->scaledScreen->scaledScreenRefCount--; |
| 545 | |
| 546 | #ifdef LIBVNCSERVER_HAVE_LIBZ |
| 547 | rfbFreeZrleData(cl); |
| 548 | #endif |
| 549 | |
| 550 | rfbFreeUltraData(cl); |
| 551 | |
| 552 | /* free buffers holding pixel data before and after encoding */ |
| 553 | free(cl->beforeEncBuf); |
| 554 | free(cl->afterEncBuf); |
| 555 | |
| 556 | if(cl->sock>=0) |
| 557 | FD_CLR(cl->sock,&(cl->screen->allFds)); |
| 558 | |
| 559 | cl->clientGoneHook(cl); |
| 560 | |
| 561 | rfbLog("Client %s gone\n",cl->host); |
| 562 | free(cl->host); |
| 563 | |
| 564 | #ifdef LIBVNCSERVER_HAVE_LIBZ |
| 565 | /* Release the compression state structures if any. */ |
| 566 | if ( cl->compStreamInited ) { |
| 567 | deflateEnd( &(cl->compStream) ); |
| 568 | } |
| 569 | |
| 570 | #ifdef LIBVNCSERVER_HAVE_LIBJPEG |
| 571 | for (i = 0; i < 4; i++) { |
| 572 | if (cl->zsActive[i]) |
| 573 | deflateEnd(&cl->zsStruct[i]); |
| 574 | } |
| 575 | #endif |
| 576 | #endif |
| 577 | |
| 578 | if (cl->screen->pointerClient == cl) |
| 579 | cl->screen->pointerClient = NULL; |
| 580 | |
| 581 | sraRgnDestroy(cl->modifiedRegion); |
| 582 | sraRgnDestroy(cl->requestedRegion); |
| 583 | sraRgnDestroy(cl->copyRegion); |
| 584 | |
| 585 | if (cl->translateLookupTable) free(cl->translateLookupTable); |
| 586 | |
| 587 | TINI_COND(cl->updateCond); |
| 588 | TINI_MUTEX(cl->updateMutex); |
| 589 | |
| 590 | /* make sure outputMutex is unlocked before destroying */ |
| 591 | LOCK(cl->outputMutex); |
| 592 | UNLOCK(cl->outputMutex); |
| 593 | TINI_MUTEX(cl->outputMutex); |
| 594 | |
| 595 | LOCK(cl->sendMutex); |
| 596 | UNLOCK(cl->sendMutex); |
| 597 | TINI_MUTEX(cl->sendMutex); |
| 598 | |
| 599 | rfbPrintStats(cl); |
| 600 | rfbResetStats(cl); |
| 601 | |
| 602 | free(cl); |
| 603 | } |
| 604 | |
| 605 | |
| 606 | /* |
| 607 | * rfbProcessClientMessage is called when there is data to read from a client. |
| 608 | */ |
| 609 | |
| 610 | void |
| 611 | rfbProcessClientMessage(rfbClientPtr cl) |
| 612 | { |
| 613 | switch (cl->state) { |
| 614 | case RFB_PROTOCOL_VERSION: |
| 615 | rfbProcessClientProtocolVersion(cl); |
| 616 | return; |
| 617 | case RFB_SECURITY_TYPE: |
| 618 | rfbProcessClientSecurityType(cl); |
| 619 | return; |
| 620 | case RFB_AUTHENTICATION: |
| 621 | rfbAuthProcessClientMessage(cl); |
| 622 | return; |
| 623 | case RFB_INITIALISATION: |
| 624 | case RFB_INITIALISATION_SHARED: |
| 625 | rfbProcessClientInitMessage(cl); |
| 626 | return; |
| 627 | default: |
| 628 | rfbProcessClientNormalMessage(cl); |
| 629 | return; |
| 630 | } |
| 631 | } |
| 632 | |
| 633 | |
| 634 | /* |
| 635 | * rfbProcessClientProtocolVersion is called when the client sends its |
| 636 | * protocol version. |
| 637 | */ |
| 638 | |
| 639 | static void |
| 640 | rfbProcessClientProtocolVersion(rfbClientPtr cl) |
| 641 | { |
| 642 | rfbProtocolVersionMsg pv; |
| 643 | int n, major_, minor_; |
| 644 | |
| 645 | if ((n = rfbReadExact(cl, pv, sz_rfbProtocolVersionMsg)) <= 0) { |
| 646 | if (n == 0) |
| 647 | rfbLog("rfbProcessClientProtocolVersion: client gone\n"); |
| 648 | else |
| 649 | rfbLogPerror("rfbProcessClientProtocolVersion: read"); |
| 650 | rfbCloseClient(cl); |
| 651 | return; |
| 652 | } |
| 653 | |
| 654 | pv[sz_rfbProtocolVersionMsg] = 0; |
| 655 | if (sscanf(pv,rfbProtocolVersionFormat,&major_,&minor_) != 2) { |
| 656 | rfbErr("rfbProcessClientProtocolVersion: not a valid RFB client: %s\n", pv); |
| 657 | rfbCloseClient(cl); |
| 658 | return; |
| 659 | } |
| 660 | rfbLog("Client Protocol Version %d.%d\n", major_, minor_); |
| 661 | |
| 662 | if (major_ != rfbProtocolMajorVersion) { |
| 663 | rfbErr("RFB protocol version mismatch - server %d.%d, client %d.%d", |
| 664 | cl->screen->protocolMajorVersion, cl->screen->protocolMinorVersion, |
| 665 | major_,minor_); |
| 666 | rfbCloseClient(cl); |
| 667 | return; |
| 668 | } |
| 669 | |
| 670 | /* Check for the minor version use either of the two standard version of RFB */ |
| 671 | /* |
| 672 | * UltraVNC Viewer detects FileTransfer compatible servers via rfb versions |
| 673 | * 3.4, 3.6, 3.14, 3.16 |
| 674 | * It's a bad method, but it is what they use to enable features... |
| 675 | * maintaining RFB version compatibility across multiple servers is a pain |
| 676 | * Should use something like ServerIdentity encoding |
| 677 | */ |
| 678 | cl->protocolMajorVersion = major_; |
| 679 | cl->protocolMinorVersion = minor_; |
| 680 | |
| 681 | rfbLog("Protocol version sent %d.%d, using %d.%d\n", |
| 682 | major_, minor_, rfbProtocolMajorVersion, cl->protocolMinorVersion); |
| 683 | |
| 684 | rfbAuthNewClient(cl); |
| 685 | } |
| 686 | |
| 687 | |
| 688 | void |
| 689 | rfbClientSendString(rfbClientPtr cl, const char *reason) |
| 690 | { |
| 691 | char *buf; |
| 692 | int len = strlen(reason); |
| 693 | |
| 694 | rfbLog("rfbClientSendString(\"%s\")\n", reason); |
| 695 | |
| 696 | buf = (char *)malloc(4 + len); |
| 697 | ((uint32_t *)buf)[0] = Swap32IfLE(len); |
| 698 | memcpy(buf + 4, reason, len); |
| 699 | |
| 700 | if (rfbWriteExact(cl, buf, 4 + len) < 0) |
| 701 | rfbLogPerror("rfbClientSendString: write"); |
| 702 | free(buf); |
| 703 | |
| 704 | rfbCloseClient(cl); |
| 705 | } |
| 706 | |
| 707 | /* |
| 708 | * rfbClientConnFailed is called when a client connection has failed either |
| 709 | * because it talks the wrong protocol or it has failed authentication. |
| 710 | */ |
| 711 | |
| 712 | void |
| 713 | rfbClientConnFailed(rfbClientPtr cl, |
| 714 | const char *reason) |
| 715 | { |
| 716 | char *buf; |
| 717 | int len = strlen(reason); |
| 718 | |
| 719 | rfbLog("rfbClientConnFailed(\"%s\")\n", reason); |
| 720 | |
| 721 | buf = (char *)malloc(8 + len); |
| 722 | ((uint32_t *)buf)[0] = Swap32IfLE(rfbConnFailed); |
| 723 | ((uint32_t *)buf)[1] = Swap32IfLE(len); |
| 724 | memcpy(buf + 8, reason, len); |
| 725 | |
| 726 | if (rfbWriteExact(cl, buf, 8 + len) < 0) |
| 727 | rfbLogPerror("rfbClientConnFailed: write"); |
| 728 | free(buf); |
| 729 | |
| 730 | rfbCloseClient(cl); |
| 731 | } |
| 732 | |
| 733 | |
| 734 | /* |
| 735 | * rfbProcessClientInitMessage is called when the client sends its |
| 736 | * initialisation message. |
| 737 | */ |
| 738 | |
| 739 | static void |
| 740 | rfbProcessClientInitMessage(rfbClientPtr cl) |
| 741 | { |
| 742 | rfbClientInitMsg ci; |
| 743 | union { |
| 744 | char buf[256]; |
| 745 | rfbServerInitMsg si; |
| 746 | } u; |
| 747 | int len, n; |
| 748 | rfbClientIteratorPtr iterator; |
| 749 | rfbClientPtr otherCl; |
| 750 | rfbExtensionData* extension; |
| 751 | |
| 752 | if (cl->state == RFB_INITIALISATION_SHARED) { |
| 753 | /* In this case behave as though an implicit ClientInit message has |
| 754 | * already been received with a shared-flag of true. */ |
| 755 | ci.shared = 1; |
| 756 | /* Avoid the possibility of exposing the RFB_INITIALISATION_SHARED |
| 757 | * state to calling software. */ |
| 758 | cl->state = RFB_INITIALISATION; |
| 759 | } else { |
| 760 | if ((n = rfbReadExact(cl, (char *)&ci,sz_rfbClientInitMsg)) <= 0) { |
| 761 | if (n == 0) |
| 762 | rfbLog("rfbProcessClientInitMessage: client gone\n"); |
| 763 | else |
| 764 | rfbLogPerror("rfbProcessClientInitMessage: read"); |
| 765 | rfbCloseClient(cl); |
| 766 | return; |
| 767 | } |
| 768 | } |
| 769 | |
| 770 | memset(u.buf,0,sizeof(u.buf)); |
| 771 | |
| 772 | u.si.framebufferWidth = Swap16IfLE(cl->screen->width); |
| 773 | u.si.framebufferHeight = Swap16IfLE(cl->screen->height); |
| 774 | u.si.format = cl->screen->serverFormat; |
| 775 | u.si.format.redMax = Swap16IfLE(u.si.format.redMax); |
| 776 | u.si.format.greenMax = Swap16IfLE(u.si.format.greenMax); |
| 777 | u.si.format.blueMax = Swap16IfLE(u.si.format.blueMax); |
| 778 | |
| 779 | strncpy(u.buf + sz_rfbServerInitMsg, cl->screen->desktopName, 127); |
| 780 | len = strlen(u.buf + sz_rfbServerInitMsg); |
| 781 | u.si.nameLength = Swap32IfLE(len); |
| 782 | |
| 783 | if (rfbWriteExact(cl, u.buf, sz_rfbServerInitMsg + len) < 0) { |
| 784 | rfbLogPerror("rfbProcessClientInitMessage: write"); |
| 785 | rfbCloseClient(cl); |
| 786 | return; |
| 787 | } |
| 788 | |
| 789 | for(extension = cl->extensions; extension;) { |
| 790 | rfbExtensionData* next = extension->next; |
| 791 | if(extension->extension->init && |
| 792 | !extension->extension->init(cl, extension->data)) |
| 793 | /* extension requested that it be removed */ |
| 794 | rfbDisableExtension(cl, extension->extension); |
| 795 | extension = next; |
| 796 | } |
| 797 | |
| 798 | cl->state = RFB_NORMAL; |
| 799 | |
| 800 | if (!cl->reverseConnection && |
| 801 | (cl->screen->neverShared || (!cl->screen->alwaysShared && !ci.shared))) { |
| 802 | |
| 803 | if (cl->screen->dontDisconnect) { |
| 804 | iterator = rfbGetClientIterator(cl->screen); |
| 805 | while ((otherCl = rfbClientIteratorNext(iterator)) != NULL) { |
| 806 | if ((otherCl != cl) && (otherCl->state == RFB_NORMAL)) { |
| 807 | rfbLog("-dontdisconnect: Not shared & existing client\n"); |
| 808 | rfbLog(" refusing new client %s\n", cl->host); |
| 809 | rfbCloseClient(cl); |
| 810 | rfbReleaseClientIterator(iterator); |
| 811 | return; |
| 812 | } |
| 813 | } |
| 814 | rfbReleaseClientIterator(iterator); |
| 815 | } else { |
| 816 | iterator = rfbGetClientIterator(cl->screen); |
| 817 | while ((otherCl = rfbClientIteratorNext(iterator)) != NULL) { |
| 818 | if ((otherCl != cl) && (otherCl->state == RFB_NORMAL)) { |
| 819 | rfbLog("Not shared - closing connection to client %s\n", |
| 820 | otherCl->host); |
| 821 | rfbCloseClient(otherCl); |
| 822 | } |
| 823 | } |
| 824 | rfbReleaseClientIterator(iterator); |
| 825 | } |
| 826 | } |
| 827 | } |
| 828 | |
| 829 | /* The values come in based on the scaled screen, we need to convert them to |
| 830 | * values based on the man screen's coordinate system |
| 831 | */ |
| 832 | static rfbBool rectSwapIfLEAndClip(uint16_t* x,uint16_t* y,uint16_t* w,uint16_t* h, |
| 833 | rfbClientPtr cl) |
| 834 | { |
| 835 | int x1=Swap16IfLE(*x); |
| 836 | int y1=Swap16IfLE(*y); |
| 837 | int w1=Swap16IfLE(*w); |
| 838 | int h1=Swap16IfLE(*h); |
| 839 | |
| 840 | rfbScaledCorrection(cl->scaledScreen, cl->screen, &x1, &y1, &w1, &h1, "rectSwapIfLEAndClip"); |
| 841 | *x = x1; |
| 842 | *y = y1; |
| 843 | *w = w1; |
| 844 | *h = h1; |
| 845 | |
| 846 | if(*w>cl->screen->width-*x) |
| 847 | *w=cl->screen->width-*x; |
| 848 | /* possible underflow */ |
| 849 | if(*w>cl->screen->width-*x) |
| 850 | return FALSE; |
| 851 | if(*h>cl->screen->height-*y) |
| 852 | *h=cl->screen->height-*y; |
| 853 | if(*h>cl->screen->height-*y) |
| 854 | return FALSE; |
| 855 | |
| 856 | return TRUE; |
| 857 | } |
| 858 | |
| 859 | /* |
| 860 | * Send keyboard state (PointerPos pseudo-encoding). |
| 861 | */ |
| 862 | |
| 863 | rfbBool |
| 864 | rfbSendKeyboardLedState(rfbClientPtr cl) |
| 865 | { |
| 866 | rfbFramebufferUpdateRectHeader rect; |
| 867 | |
| 868 | if (cl->ublen + sz_rfbFramebufferUpdateRectHeader > UPDATE_BUF_SIZE) { |
| 869 | if (!rfbSendUpdateBuf(cl)) |
| 870 | return FALSE; |
| 871 | } |
| 872 | |
| 873 | rect.encoding = Swap32IfLE(rfbEncodingKeyboardLedState); |
| 874 | rect.r.x = Swap16IfLE(cl->lastKeyboardLedState); |
| 875 | rect.r.y = 0; |
| 876 | rect.r.w = 0; |
| 877 | rect.r.h = 0; |
| 878 | |
| 879 | memcpy(&cl->updateBuf[cl->ublen], (char *)&rect, |
| 880 | sz_rfbFramebufferUpdateRectHeader); |
| 881 | cl->ublen += sz_rfbFramebufferUpdateRectHeader; |
| 882 | |
| 883 | rfbStatRecordEncodingSent(cl, rfbEncodingKeyboardLedState, sz_rfbFramebufferUpdateRectHeader, sz_rfbFramebufferUpdateRectHeader); |
| 884 | |
| 885 | if (!rfbSendUpdateBuf(cl)) |
| 886 | return FALSE; |
| 887 | |
| 888 | return TRUE; |
| 889 | } |
| 890 | |
| 891 | |
| 892 | #define rfbSetBit(buffer, position) (buffer[(position & 255) / 8] |= (1 << (position % 8))) |
| 893 | |
| 894 | /* |
| 895 | * Send rfbEncodingSupportedMessages. |
| 896 | */ |
| 897 | |
| 898 | rfbBool |
| 899 | rfbSendSupportedMessages(rfbClientPtr cl) |
| 900 | { |
| 901 | rfbFramebufferUpdateRectHeader rect; |
| 902 | rfbSupportedMessages msgs; |
| 903 | |
| 904 | if (cl->ublen + sz_rfbFramebufferUpdateRectHeader |
| 905 | + sz_rfbSupportedMessages > UPDATE_BUF_SIZE) { |
| 906 | if (!rfbSendUpdateBuf(cl)) |
| 907 | return FALSE; |
| 908 | } |
| 909 | |
| 910 | rect.encoding = Swap32IfLE(rfbEncodingSupportedMessages); |
| 911 | rect.r.x = 0; |
| 912 | rect.r.y = 0; |
| 913 | rect.r.w = Swap16IfLE(sz_rfbSupportedMessages); |
| 914 | rect.r.h = 0; |
| 915 | |
| 916 | memcpy(&cl->updateBuf[cl->ublen], (char *)&rect, |
| 917 | sz_rfbFramebufferUpdateRectHeader); |
| 918 | cl->ublen += sz_rfbFramebufferUpdateRectHeader; |
| 919 | |
| 920 | memset((char *)&msgs, 0, sz_rfbSupportedMessages); |
| 921 | rfbSetBit(msgs.client2server, rfbSetPixelFormat); |
| 922 | rfbSetBit(msgs.client2server, rfbFixColourMapEntries); |
| 923 | rfbSetBit(msgs.client2server, rfbSetEncodings); |
| 924 | rfbSetBit(msgs.client2server, rfbFramebufferUpdateRequest); |
| 925 | rfbSetBit(msgs.client2server, rfbKeyEvent); |
| 926 | rfbSetBit(msgs.client2server, rfbPointerEvent); |
| 927 | rfbSetBit(msgs.client2server, rfbClientCutText); |
| 928 | rfbSetBit(msgs.client2server, rfbFileTransfer); |
| 929 | rfbSetBit(msgs.client2server, rfbSetScale); |
| 930 | /*rfbSetBit(msgs.client2server, rfbSetServerInput); */ |
| 931 | /*rfbSetBit(msgs.client2server, rfbSetSW); */ |
| 932 | rfbSetBit(msgs.client2server, rfbTextChat); |
| 933 | rfbSetBit(msgs.client2server, rfbPalmVNCSetScaleFactor); |
| 934 | rfbSetBit(msgs.client2server, rfbXvp); |
| 935 | |
| 936 | rfbSetBit(msgs.server2client, rfbFramebufferUpdate); |
| 937 | rfbSetBit(msgs.server2client, rfbSetColourMapEntries); |
| 938 | rfbSetBit(msgs.server2client, rfbBell); |
| 939 | rfbSetBit(msgs.server2client, rfbServerCutText); |
| 940 | rfbSetBit(msgs.server2client, rfbResizeFrameBuffer); |
| 941 | rfbSetBit(msgs.server2client, rfbPalmVNCReSizeFrameBuffer); |
| 942 | rfbSetBit(msgs.server2client, rfbXvp); |
| 943 | |
| 944 | memcpy(&cl->updateBuf[cl->ublen], (char *)&msgs, sz_rfbSupportedMessages); |
| 945 | cl->ublen += sz_rfbSupportedMessages; |
| 946 | |
| 947 | rfbStatRecordEncodingSent(cl, rfbEncodingSupportedMessages, |
| 948 | sz_rfbFramebufferUpdateRectHeader+sz_rfbSupportedMessages, |
| 949 | sz_rfbFramebufferUpdateRectHeader+sz_rfbSupportedMessages); |
| 950 | if (!rfbSendUpdateBuf(cl)) |
| 951 | return FALSE; |
| 952 | |
| 953 | return TRUE; |
| 954 | } |
| 955 | |
| 956 | |
| 957 | |
| 958 | /* |
| 959 | * Send rfbEncodingSupportedEncodings. |
| 960 | */ |
| 961 | |
| 962 | rfbBool |
| 963 | rfbSendSupportedEncodings(rfbClientPtr cl) |
| 964 | { |
| 965 | rfbFramebufferUpdateRectHeader rect; |
| 966 | static uint32_t supported[] = { |
| 967 | rfbEncodingRaw, |
| 968 | rfbEncodingCopyRect, |
| 969 | rfbEncodingRRE, |
| 970 | rfbEncodingCoRRE, |
| 971 | rfbEncodingHextile, |
| 972 | #ifdef LIBVNCSERVER_HAVE_LIBZ |
| 973 | rfbEncodingZlib, |
| 974 | rfbEncodingZRLE, |
| 975 | rfbEncodingZYWRLE, |
| 976 | #endif |
| 977 | #ifdef LIBVNCSERVER_HAVE_LIBJPEG |
| 978 | rfbEncodingTight, |
| 979 | #endif |
| 980 | #ifdef LIBVNCSERVER_HAVE_LIBPNG |
| 981 | rfbEncodingTightPng, |
| 982 | #endif |
| 983 | rfbEncodingUltra, |
| 984 | rfbEncodingUltraZip, |
| 985 | rfbEncodingXCursor, |
| 986 | rfbEncodingRichCursor, |
| 987 | rfbEncodingPointerPos, |
| 988 | rfbEncodingLastRect, |
| 989 | rfbEncodingNewFBSize, |
| 990 | rfbEncodingKeyboardLedState, |
| 991 | rfbEncodingSupportedMessages, |
| 992 | rfbEncodingSupportedEncodings, |
| 993 | rfbEncodingServerIdentity, |
| 994 | }; |
| 995 | uint32_t nEncodings = sizeof(supported) / sizeof(supported[0]), i; |
| 996 | |
| 997 | /* think rfbSetEncodingsMsg */ |
| 998 | |
| 999 | if (cl->ublen + sz_rfbFramebufferUpdateRectHeader |
| 1000 | + (nEncodings * sizeof(uint32_t)) > UPDATE_BUF_SIZE) { |
| 1001 | if (!rfbSendUpdateBuf(cl)) |
| 1002 | return FALSE; |
| 1003 | } |
| 1004 | |
| 1005 | rect.encoding = Swap32IfLE(rfbEncodingSupportedEncodings); |
| 1006 | rect.r.x = 0; |
| 1007 | rect.r.y = 0; |
| 1008 | rect.r.w = Swap16IfLE(nEncodings * sizeof(uint32_t)); |
| 1009 | rect.r.h = Swap16IfLE(nEncodings); |
| 1010 | |
| 1011 | memcpy(&cl->updateBuf[cl->ublen], (char *)&rect, |
| 1012 | sz_rfbFramebufferUpdateRectHeader); |
| 1013 | cl->ublen += sz_rfbFramebufferUpdateRectHeader; |
| 1014 | |
| 1015 | for (i = 0; i < nEncodings; i++) { |
| 1016 | uint32_t encoding = Swap32IfLE(supported[i]); |
| 1017 | memcpy(&cl->updateBuf[cl->ublen], (char *)&encoding, sizeof(encoding)); |
| 1018 | cl->ublen += sizeof(encoding); |
| 1019 | } |
| 1020 | |
| 1021 | rfbStatRecordEncodingSent(cl, rfbEncodingSupportedEncodings, |
| 1022 | sz_rfbFramebufferUpdateRectHeader+(nEncodings * sizeof(uint32_t)), |
| 1023 | sz_rfbFramebufferUpdateRectHeader+(nEncodings * sizeof(uint32_t))); |
| 1024 | |
| 1025 | if (!rfbSendUpdateBuf(cl)) |
| 1026 | return FALSE; |
| 1027 | |
| 1028 | return TRUE; |
| 1029 | } |
| 1030 | |
| 1031 | |
| 1032 | void |
| 1033 | rfbSetServerVersionIdentity(rfbScreenInfoPtr screen, char *fmt, ...) |
| 1034 | { |
| 1035 | char buffer[256]; |
| 1036 | va_list ap; |
| 1037 | |
| 1038 | va_start(ap, fmt); |
| 1039 | vsnprintf(buffer, sizeof(buffer)-1, fmt, ap); |
| 1040 | va_end(ap); |
| 1041 | |
| 1042 | if (screen->versionString!=NULL) free(screen->versionString); |
| 1043 | screen->versionString = strdup(buffer); |
| 1044 | } |
| 1045 | |
| 1046 | /* |
| 1047 | * Send rfbEncodingServerIdentity. |
| 1048 | */ |
| 1049 | |
| 1050 | rfbBool |
| 1051 | rfbSendServerIdentity(rfbClientPtr cl) |
| 1052 | { |
| 1053 | rfbFramebufferUpdateRectHeader rect; |
| 1054 | char buffer[512]; |
| 1055 | |
| 1056 | /* tack on our library version */ |
| 1057 | snprintf(buffer,sizeof(buffer)-1, "%s (%s)", |
| 1058 | (cl->screen->versionString==NULL ? "unknown" : cl->screen->versionString), |
| 1059 | LIBVNCSERVER_PACKAGE_STRING); |
| 1060 | |
| 1061 | if (cl->ublen + sz_rfbFramebufferUpdateRectHeader |
| 1062 | + (strlen(buffer)+1) > UPDATE_BUF_SIZE) { |
| 1063 | if (!rfbSendUpdateBuf(cl)) |
| 1064 | return FALSE; |
| 1065 | } |
| 1066 | |
| 1067 | rect.encoding = Swap32IfLE(rfbEncodingServerIdentity); |
| 1068 | rect.r.x = 0; |
| 1069 | rect.r.y = 0; |
| 1070 | rect.r.w = Swap16IfLE(strlen(buffer)+1); |
| 1071 | rect.r.h = 0; |
| 1072 | |
| 1073 | memcpy(&cl->updateBuf[cl->ublen], (char *)&rect, |
| 1074 | sz_rfbFramebufferUpdateRectHeader); |
| 1075 | cl->ublen += sz_rfbFramebufferUpdateRectHeader; |
| 1076 | |
| 1077 | memcpy(&cl->updateBuf[cl->ublen], buffer, strlen(buffer)+1); |
| 1078 | cl->ublen += strlen(buffer)+1; |
| 1079 | |
| 1080 | rfbStatRecordEncodingSent(cl, rfbEncodingServerIdentity, |
| 1081 | sz_rfbFramebufferUpdateRectHeader+strlen(buffer)+1, |
| 1082 | sz_rfbFramebufferUpdateRectHeader+strlen(buffer)+1); |
| 1083 | |
| 1084 | |
| 1085 | if (!rfbSendUpdateBuf(cl)) |
| 1086 | return FALSE; |
| 1087 | |
| 1088 | return TRUE; |
| 1089 | } |
| 1090 | |
| 1091 | /* |
| 1092 | * Send an xvp server message |
| 1093 | */ |
| 1094 | |
| 1095 | rfbBool |
| 1096 | rfbSendXvp(rfbClientPtr cl, uint8_t version, uint8_t code) |
| 1097 | { |
| 1098 | rfbXvpMsg xvp; |
| 1099 | |
| 1100 | xvp.type = rfbXvp; |
| 1101 | xvp.pad = 0; |
| 1102 | xvp.version = version; |
| 1103 | xvp.code = code; |
| 1104 | |
| 1105 | LOCK(cl->sendMutex); |
| 1106 | if (rfbWriteExact(cl, (char *)&xvp, sz_rfbXvpMsg) < 0) { |
| 1107 | rfbLogPerror("rfbSendXvp: write"); |
| 1108 | rfbCloseClient(cl); |
| 1109 | } |
| 1110 | UNLOCK(cl->sendMutex); |
| 1111 | |
| 1112 | rfbStatRecordMessageSent(cl, rfbXvp, sz_rfbXvpMsg, sz_rfbXvpMsg); |
| 1113 | |
| 1114 | return TRUE; |
| 1115 | } |
| 1116 | |
| 1117 | |
| 1118 | rfbBool rfbSendTextChatMessage(rfbClientPtr cl, uint32_t length, char *buffer) |
| 1119 | { |
| 1120 | rfbTextChatMsg tc; |
| 1121 | int bytesToSend=0; |
| 1122 | |
| 1123 | memset((char *)&tc, 0, sizeof(tc)); |
| 1124 | tc.type = rfbTextChat; |
| 1125 | tc.length = Swap32IfLE(length); |
| 1126 | |
| 1127 | switch(length) { |
| 1128 | case rfbTextChatOpen: |
| 1129 | case rfbTextChatClose: |
| 1130 | case rfbTextChatFinished: |
| 1131 | bytesToSend=0; |
| 1132 | break; |
| 1133 | default: |
| 1134 | bytesToSend=length; |
| 1135 | if (bytesToSend>rfbTextMaxSize) |
| 1136 | bytesToSend=rfbTextMaxSize; |
| 1137 | } |
| 1138 | |
| 1139 | if (cl->ublen + sz_rfbTextChatMsg + bytesToSend > UPDATE_BUF_SIZE) { |
| 1140 | if (!rfbSendUpdateBuf(cl)) |
| 1141 | return FALSE; |
| 1142 | } |
| 1143 | |
| 1144 | memcpy(&cl->updateBuf[cl->ublen], (char *)&tc, sz_rfbTextChatMsg); |
| 1145 | cl->ublen += sz_rfbTextChatMsg; |
| 1146 | if (bytesToSend>0) { |
| 1147 | memcpy(&cl->updateBuf[cl->ublen], buffer, bytesToSend); |
| 1148 | cl->ublen += bytesToSend; |
| 1149 | } |
| 1150 | rfbStatRecordMessageSent(cl, rfbTextChat, sz_rfbTextChatMsg+bytesToSend, sz_rfbTextChatMsg+bytesToSend); |
| 1151 | |
| 1152 | if (!rfbSendUpdateBuf(cl)) |
| 1153 | return FALSE; |
| 1154 | |
| 1155 | return TRUE; |
| 1156 | } |
| 1157 | |
| 1158 | #define FILEXFER_ALLOWED_OR_CLOSE_AND_RETURN(msg, cl, ret) \ |
| 1159 | if ((cl->screen->getFileTransferPermission != NULL \ |
| 1160 | && cl->screen->getFileTransferPermission(cl) != TRUE) \ |
| 1161 | || cl->screen->permitFileTransfer != TRUE) { \ |
| 1162 | rfbLog("%sUltra File Transfer is disabled, dropping client: %s\n", msg, cl->host); \ |
| 1163 | rfbCloseClient(cl); \ |
| 1164 | return ret; \ |
| 1165 | } |
| 1166 | |
| 1167 | int DB = 1; |
| 1168 | |
| 1169 | rfbBool rfbSendFileTransferMessage(rfbClientPtr cl, uint8_t contentType, uint8_t contentParam, uint32_t size, uint32_t length, const char *buffer) |
| 1170 | { |
| 1171 | rfbFileTransferMsg ft; |
| 1172 | ft.type = rfbFileTransfer; |
| 1173 | ft.contentType = contentType; |
| 1174 | ft.contentParam = contentParam; |
| 1175 | ft.pad = 0; /* UltraVNC did not Swap16LE(ft.contentParam) (Looks like it might be BigEndian) */ |
| 1176 | ft.size = Swap32IfLE(size); |
| 1177 | ft.length = Swap32IfLE(length); |
| 1178 | |
| 1179 | FILEXFER_ALLOWED_OR_CLOSE_AND_RETURN("", cl, FALSE); |
| 1180 | /* |
| 1181 | rfbLog("rfbSendFileTransferMessage( %dtype, %dparam, %dsize, %dlen, %p)\n", contentType, contentParam, size, length, buffer); |
| 1182 | */ |
| 1183 | LOCK(cl->sendMutex); |
| 1184 | if (rfbWriteExact(cl, (char *)&ft, sz_rfbFileTransferMsg) < 0) { |
| 1185 | rfbLogPerror("rfbSendFileTransferMessage: write"); |
| 1186 | rfbCloseClient(cl); |
| 1187 | UNLOCK(cl->sendMutex); |
| 1188 | return FALSE; |
| 1189 | } |
| 1190 | |
| 1191 | if (length>0) |
| 1192 | { |
| 1193 | if (rfbWriteExact(cl, buffer, length) < 0) { |
| 1194 | rfbLogPerror("rfbSendFileTransferMessage: write"); |
| 1195 | rfbCloseClient(cl); |
| 1196 | UNLOCK(cl->sendMutex); |
| 1197 | return FALSE; |
| 1198 | } |
| 1199 | } |
| 1200 | UNLOCK(cl->sendMutex); |
| 1201 | |
| 1202 | rfbStatRecordMessageSent(cl, rfbFileTransfer, sz_rfbFileTransferMsg+length, sz_rfbFileTransferMsg+length); |
| 1203 | |
| 1204 | return TRUE; |
| 1205 | } |
| 1206 | |
| 1207 | |
| 1208 | /* |
| 1209 | * UltraVNC uses Windows Structures |
| 1210 | */ |
| 1211 | #define MAX_PATH 260 |
| 1212 | |
| 1213 | typedef struct { |
| 1214 | uint32_t dwLowDateTime; |
| 1215 | uint32_t dwHighDateTime; |
| 1216 | } RFB_FILETIME; |
| 1217 | |
| 1218 | typedef struct { |
| 1219 | uint32_t dwFileAttributes; |
| 1220 | RFB_FILETIME ftCreationTime; |
| 1221 | RFB_FILETIME ftLastAccessTime; |
| 1222 | RFB_FILETIME ftLastWriteTime; |
| 1223 | uint32_t nFileSizeHigh; |
| 1224 | uint32_t nFileSizeLow; |
| 1225 | uint32_t dwReserved0; |
| 1226 | uint32_t dwReserved1; |
| 1227 | uint8_t cFileName[ MAX_PATH ]; |
| 1228 | uint8_t cAlternateFileName[ 14 ]; |
| 1229 | } RFB_FIND_DATA; |
| 1230 | |
| 1231 | #define RFB_FILE_ATTRIBUTE_READONLY 0x1 |
| 1232 | #define RFB_FILE_ATTRIBUTE_HIDDEN 0x2 |
| 1233 | #define RFB_FILE_ATTRIBUTE_SYSTEM 0x4 |
| 1234 | #define RFB_FILE_ATTRIBUTE_DIRECTORY 0x10 |
| 1235 | #define RFB_FILE_ATTRIBUTE_ARCHIVE 0x20 |
| 1236 | #define RFB_FILE_ATTRIBUTE_NORMAL 0x80 |
| 1237 | #define RFB_FILE_ATTRIBUTE_TEMPORARY 0x100 |
| 1238 | #define RFB_FILE_ATTRIBUTE_COMPRESSED 0x800 |
| 1239 | |
| 1240 | rfbBool rfbFilenameTranslate2UNIX(rfbClientPtr cl, char *path, char *unixPath) |
| 1241 | { |
| 1242 | int x; |
| 1243 | char *home=NULL; |
| 1244 | |
| 1245 | FILEXFER_ALLOWED_OR_CLOSE_AND_RETURN("", cl, FALSE); |
| 1246 | |
| 1247 | /* C: */ |
| 1248 | if (path[0]=='C' && path[1]==':') |
| 1249 | strcpy(unixPath, &path[2]); |
| 1250 | else |
| 1251 | { |
| 1252 | home = getenv("HOME"); |
| 1253 | if (home!=NULL) |
| 1254 | { |
| 1255 | strcpy(unixPath, home); |
| 1256 | strcat(unixPath,"/"); |
| 1257 | strcat(unixPath, path); |
| 1258 | } |
| 1259 | else |
| 1260 | strcpy(unixPath, path); |
| 1261 | } |
| 1262 | for (x=0;x<strlen(unixPath);x++) |
| 1263 | if (unixPath[x]=='\\') unixPath[x]='/'; |
| 1264 | return TRUE; |
| 1265 | } |
| 1266 | |
| 1267 | rfbBool rfbFilenameTranslate2DOS(rfbClientPtr cl, char *unixPath, char *path) |
| 1268 | { |
| 1269 | int x; |
| 1270 | |
| 1271 | FILEXFER_ALLOWED_OR_CLOSE_AND_RETURN("", cl, FALSE); |
| 1272 | |
| 1273 | sprintf(path,"C:%s", unixPath); |
| 1274 | for (x=2;x<strlen(path);x++) |
| 1275 | if (path[x]=='/') path[x]='\\'; |
| 1276 | return TRUE; |
| 1277 | } |
| 1278 | |
| 1279 | rfbBool rfbSendDirContent(rfbClientPtr cl, int length, char *buffer) |
| 1280 | { |
| 1281 | char retfilename[MAX_PATH]; |
| 1282 | char path[MAX_PATH]; |
| 1283 | struct stat statbuf; |
| 1284 | RFB_FIND_DATA win32filename; |
| 1285 | int nOptLen = 0, retval=0; |
| 1286 | DIR *dirp=NULL; |
| 1287 | struct dirent *direntp=NULL; |
| 1288 | |
| 1289 | FILEXFER_ALLOWED_OR_CLOSE_AND_RETURN("", cl, FALSE); |
| 1290 | |
| 1291 | /* Client thinks we are Winblows */ |
| 1292 | rfbFilenameTranslate2UNIX(cl, buffer, path); |
| 1293 | |
| 1294 | if (DB) rfbLog("rfbProcessFileTransfer() rfbDirContentRequest: rfbRDirContent: \"%s\"->\"%s\"\n",buffer, path); |
| 1295 | |
| 1296 | dirp=opendir(path); |
| 1297 | if (dirp==NULL) |
| 1298 | return rfbSendFileTransferMessage(cl, rfbDirPacket, rfbADirectory, 0, 0, NULL); |
| 1299 | /* send back the path name (necessary for links) */ |
| 1300 | if (rfbSendFileTransferMessage(cl, rfbDirPacket, rfbADirectory, 0, length, buffer)==FALSE) return FALSE; |
| 1301 | for (direntp=readdir(dirp); direntp!=NULL; direntp=readdir(dirp)) |
| 1302 | { |
| 1303 | /* get stats */ |
| 1304 | snprintf(retfilename,sizeof(retfilename),"%s/%s", path, direntp->d_name); |
| 1305 | retval = stat(retfilename, &statbuf); |
| 1306 | |
| 1307 | if (retval==0) |
| 1308 | { |
| 1309 | memset((char *)&win32filename, 0, sizeof(win32filename)); |
| 1310 | win32filename.dwFileAttributes = Swap32IfBE(RFB_FILE_ATTRIBUTE_NORMAL); |
| 1311 | if (S_ISDIR(statbuf.st_mode)) |
| 1312 | win32filename.dwFileAttributes = Swap32IfBE(RFB_FILE_ATTRIBUTE_DIRECTORY); |
| 1313 | win32filename.ftCreationTime.dwLowDateTime = Swap32IfBE(statbuf.st_ctime); /* Intel Order */ |
| 1314 | win32filename.ftCreationTime.dwHighDateTime = 0; |
| 1315 | win32filename.ftLastAccessTime.dwLowDateTime = Swap32IfBE(statbuf.st_atime); /* Intel Order */ |
| 1316 | win32filename.ftLastAccessTime.dwHighDateTime = 0; |
| 1317 | win32filename.ftLastWriteTime.dwLowDateTime = Swap32IfBE(statbuf.st_mtime); /* Intel Order */ |
| 1318 | win32filename.ftLastWriteTime.dwHighDateTime = 0; |
| 1319 | win32filename.nFileSizeLow = Swap32IfBE(statbuf.st_size); /* Intel Order */ |
| 1320 | win32filename.nFileSizeHigh = 0; |
| 1321 | win32filename.dwReserved0 = 0; |
| 1322 | win32filename.dwReserved1 = 0; |
| 1323 | |
| 1324 | /* If this had the full path, we would need to translate to DOS format ("C:\") */ |
| 1325 | /* rfbFilenameTranslate2DOS(cl, retfilename, win32filename.cFileName); */ |
| 1326 | strcpy((char *)win32filename.cFileName, direntp->d_name); |
| 1327 | |
| 1328 | /* Do not show hidden files (but show how to move up the tree) */ |
| 1329 | if ((strcmp(direntp->d_name, "..")==0) || (direntp->d_name[0]!='.')) |
| 1330 | { |
| 1331 | nOptLen = sizeof(RFB_FIND_DATA) - MAX_PATH - 14 + strlen((char *)win32filename.cFileName); |
| 1332 | /* |
| 1333 | rfbLog("rfbProcessFileTransfer() rfbDirContentRequest: rfbRDirContent: Sending \"%s\"\n", (char *)win32filename.cFileName); |
| 1334 | */ |
| 1335 | if (rfbSendFileTransferMessage(cl, rfbDirPacket, rfbADirectory, 0, nOptLen, (char *)&win32filename)==FALSE) |
| 1336 | { |
| 1337 | closedir(dirp); |
| 1338 | return FALSE; |
| 1339 | } |
| 1340 | } |
| 1341 | } |
| 1342 | } |
| 1343 | closedir(dirp); |
| 1344 | /* End of the transfer */ |
| 1345 | return rfbSendFileTransferMessage(cl, rfbDirPacket, 0, 0, 0, NULL); |
| 1346 | } |
| 1347 | |
| 1348 | |
| 1349 | char *rfbProcessFileTransferReadBuffer(rfbClientPtr cl, uint32_t length) |
| 1350 | { |
| 1351 | char *buffer=NULL; |
| 1352 | int n=0; |
| 1353 | |
| 1354 | FILEXFER_ALLOWED_OR_CLOSE_AND_RETURN("", cl, NULL); |
| 1355 | /* |
| 1356 | rfbLog("rfbProcessFileTransferReadBuffer(%dlen)\n", length); |
| 1357 | */ |
| 1358 | if (length>0) { |
| 1359 | buffer=malloc(length+1); |
| 1360 | if (buffer!=NULL) { |
| 1361 | if ((n = rfbReadExact(cl, (char *)buffer, length)) <= 0) { |
| 1362 | if (n != 0) |
| 1363 | rfbLogPerror("rfbProcessFileTransferReadBuffer: read"); |
| 1364 | rfbCloseClient(cl); |
| 1365 | /* NOTE: don't forget to free(buffer) if you return early! */ |
| 1366 | if (buffer!=NULL) free(buffer); |
| 1367 | return NULL; |
| 1368 | } |
| 1369 | /* Null Terminate */ |
| 1370 | buffer[length]=0; |
| 1371 | } |
| 1372 | } |
| 1373 | return buffer; |
| 1374 | } |
| 1375 | |
| 1376 | |
| 1377 | rfbBool rfbSendFileTransferChunk(rfbClientPtr cl) |
| 1378 | { |
| 1379 | /* Allocate buffer for compression */ |
| 1380 | unsigned char readBuf[sz_rfbBlockSize]; |
| 1381 | int bytesRead=0; |
| 1382 | int retval=0; |
| 1383 | fd_set wfds; |
| 1384 | struct timeval tv; |
| 1385 | int n; |
| 1386 | #ifdef LIBVNCSERVER_HAVE_LIBZ |
| 1387 | unsigned char compBuf[sz_rfbBlockSize + 1024]; |
| 1388 | unsigned long nMaxCompSize = sizeof(compBuf); |
| 1389 | int nRetC = 0; |
| 1390 | #endif |
| 1391 | |
| 1392 | /* |
| 1393 | * Don't close the client if we get into this one because |
| 1394 | * it is called from many places to service file transfers. |
| 1395 | * Note that permitFileTransfer is checked first. |
| 1396 | */ |
| 1397 | if (cl->screen->permitFileTransfer != TRUE || |
| 1398 | (cl->screen->getFileTransferPermission != NULL |
| 1399 | && cl->screen->getFileTransferPermission(cl) != TRUE)) { |
| 1400 | return TRUE; |
| 1401 | } |
| 1402 | |
| 1403 | /* If not sending, or no file open... Return as if we sent something! */ |
| 1404 | if ((cl->fileTransfer.fd!=-1) && (cl->fileTransfer.sending==1)) |
| 1405 | { |
| 1406 | FD_ZERO(&wfds); |
| 1407 | FD_SET(cl->sock, &wfds); |
| 1408 | |
| 1409 | /* return immediately */ |
| 1410 | tv.tv_sec = 0; |
| 1411 | tv.tv_usec = 0; |
| 1412 | n = select(cl->sock + 1, NULL, &wfds, NULL, &tv); |
| 1413 | |
| 1414 | if (n<0) { |
| 1415 | #ifdef WIN32 |
| 1416 | errno=WSAGetLastError(); |
| 1417 | #endif |
| 1418 | rfbLog("rfbSendFileTransferChunk() select failed: %s\n", strerror(errno)); |
| 1419 | } |
| 1420 | /* We have space on the transmit queue */ |
| 1421 | if (n > 0) |
| 1422 | { |
| 1423 | bytesRead = read(cl->fileTransfer.fd, readBuf, sz_rfbBlockSize); |
| 1424 | switch (bytesRead) { |
| 1425 | case 0: |
| 1426 | /* |
| 1427 | rfbLog("rfbSendFileTransferChunk(): End-Of-File Encountered\n"); |
| 1428 | */ |
| 1429 | retval = rfbSendFileTransferMessage(cl, rfbEndOfFile, 0, 0, 0, NULL); |
| 1430 | close(cl->fileTransfer.fd); |
| 1431 | cl->fileTransfer.fd = -1; |
| 1432 | cl->fileTransfer.sending = 0; |
| 1433 | cl->fileTransfer.receiving = 0; |
| 1434 | return retval; |
| 1435 | case -1: |
| 1436 | /* TODO : send an error msg to the client... */ |
| 1437 | #ifdef WIN32 |
| 1438 | errno=WSAGetLastError(); |
| 1439 | #endif |
| 1440 | rfbLog("rfbSendFileTransferChunk(): %s\n",strerror(errno)); |
| 1441 | retval = rfbSendFileTransferMessage(cl, rfbAbortFileTransfer, 0, 0, 0, NULL); |
| 1442 | close(cl->fileTransfer.fd); |
| 1443 | cl->fileTransfer.fd = -1; |
| 1444 | cl->fileTransfer.sending = 0; |
| 1445 | cl->fileTransfer.receiving = 0; |
| 1446 | return retval; |
| 1447 | default: |
| 1448 | /* |
| 1449 | rfbLog("rfbSendFileTransferChunk(): Read %d bytes\n", bytesRead); |
| 1450 | */ |
| 1451 | if (!cl->fileTransfer.compressionEnabled) |
| 1452 | return rfbSendFileTransferMessage(cl, rfbFilePacket, 0, 0, bytesRead, (char *)readBuf); |
| 1453 | else |
| 1454 | { |
| 1455 | #ifdef LIBVNCSERVER_HAVE_LIBZ |
| 1456 | nRetC = compress(compBuf, &nMaxCompSize, readBuf, bytesRead); |
| 1457 | /* |
| 1458 | rfbLog("Compressed the packet from %d -> %d bytes\n", nMaxCompSize, bytesRead); |
| 1459 | */ |
| 1460 | |
| 1461 | if ((nRetC==0) && (nMaxCompSize<bytesRead)) |
| 1462 | return rfbSendFileTransferMessage(cl, rfbFilePacket, 0, 1, nMaxCompSize, (char *)compBuf); |
| 1463 | else |
| 1464 | return rfbSendFileTransferMessage(cl, rfbFilePacket, 0, 0, bytesRead, (char *)readBuf); |
| 1465 | #else |
| 1466 | /* We do not support compression of the data stream */ |
| 1467 | return rfbSendFileTransferMessage(cl, rfbFilePacket, 0, 0, bytesRead, (char *)readBuf); |
| 1468 | #endif |
| 1469 | } |
| 1470 | } |
| 1471 | } |
| 1472 | } |
| 1473 | return TRUE; |
| 1474 | } |
| 1475 | |
| 1476 | rfbBool rfbProcessFileTransfer(rfbClientPtr cl, uint8_t contentType, uint8_t contentParam, uint32_t size, uint32_t length) |
| 1477 | { |
| 1478 | char *buffer=NULL, *p=NULL; |
| 1479 | int retval=0; |
| 1480 | char filename1[MAX_PATH]; |
| 1481 | char filename2[MAX_PATH]; |
| 1482 | char szFileTime[MAX_PATH]; |
| 1483 | struct stat statbuf; |
| 1484 | uint32_t sizeHtmp=0; |
| 1485 | int n=0; |
| 1486 | char timespec[64]; |
| 1487 | #ifdef LIBVNCSERVER_HAVE_LIBZ |
| 1488 | unsigned char compBuff[sz_rfbBlockSize]; |
| 1489 | unsigned long nRawBytes = sz_rfbBlockSize; |
| 1490 | int nRet = 0; |
| 1491 | #endif |
| 1492 | |
| 1493 | FILEXFER_ALLOWED_OR_CLOSE_AND_RETURN("", cl, FALSE); |
| 1494 | |
| 1495 | /* |
| 1496 | rfbLog("rfbProcessFileTransfer(%dtype, %dparam, %dsize, %dlen)\n", contentType, contentParam, size, length); |
| 1497 | */ |
| 1498 | |
| 1499 | switch (contentType) { |
| 1500 | case rfbDirContentRequest: |
| 1501 | switch (contentParam) { |
| 1502 | case rfbRDrivesList: /* Client requests the List of Local Drives */ |
| 1503 | /* |
| 1504 | rfbLog("rfbProcessFileTransfer() rfbDirContentRequest: rfbRDrivesList:\n"); |
| 1505 | */ |
| 1506 | /* Format when filled : "C:\<NULL>D:\<NULL>....Z:\<NULL><NULL> |
| 1507 | * |
| 1508 | * We replace the "\" char following the drive letter and ":" |
| 1509 | * with a char corresponding to the type of drive |
| 1510 | * We obtain something like "C:l<NULL>D:c<NULL>....Z:n\<NULL><NULL>" |
| 1511 | * Isn't it ugly ? |
| 1512 | * DRIVE_FIXED = 'l' (local?) |
| 1513 | * DRIVE_REMOVABLE = 'f' (floppy?) |
| 1514 | * DRIVE_CDROM = 'c' |
| 1515 | * DRIVE_REMOTE = 'n' |
| 1516 | */ |
| 1517 | |
| 1518 | /* in unix, there are no 'drives' (We could list mount points though) |
| 1519 | * We fake the root as a "C:" for the Winblows users |
| 1520 | */ |
| 1521 | filename2[0]='C'; |
| 1522 | filename2[1]=':'; |
| 1523 | filename2[2]='l'; |
| 1524 | filename2[3]=0; |
| 1525 | filename2[4]=0; |
| 1526 | retval = rfbSendFileTransferMessage(cl, rfbDirPacket, rfbADrivesList, 0, 5, filename2); |
| 1527 | if (buffer!=NULL) free(buffer); |
| 1528 | return retval; |
| 1529 | break; |
| 1530 | case rfbRDirContent: /* Client requests the content of a directory */ |
| 1531 | /* |
| 1532 | rfbLog("rfbProcessFileTransfer() rfbDirContentRequest: rfbRDirContent\n"); |
| 1533 | */ |
| 1534 | if ((buffer = rfbProcessFileTransferReadBuffer(cl, length))==NULL) return FALSE; |
| 1535 | retval = rfbSendDirContent(cl, length, buffer); |
| 1536 | if (buffer!=NULL) free(buffer); |
| 1537 | return retval; |
| 1538 | } |
| 1539 | break; |
| 1540 | |
| 1541 | case rfbDirPacket: |
| 1542 | rfbLog("rfbProcessFileTransfer() rfbDirPacket\n"); |
| 1543 | break; |
| 1544 | case rfbFileAcceptHeader: |
| 1545 | rfbLog("rfbProcessFileTransfer() rfbFileAcceptHeader\n"); |
| 1546 | break; |
| 1547 | case rfbCommandReturn: |
| 1548 | rfbLog("rfbProcessFileTransfer() rfbCommandReturn\n"); |
| 1549 | break; |
| 1550 | case rfbFileChecksums: |
| 1551 | /* Destination file already exists - the viewer sends the checksums */ |
| 1552 | rfbLog("rfbProcessFileTransfer() rfbFileChecksums\n"); |
| 1553 | break; |
| 1554 | case rfbFileTransferAccess: |
| 1555 | rfbLog("rfbProcessFileTransfer() rfbFileTransferAccess\n"); |
| 1556 | break; |
| 1557 | |
| 1558 | /* |
| 1559 | * sending from the server to the viewer |
| 1560 | */ |
| 1561 | |
| 1562 | case rfbFileTransferRequest: |
| 1563 | /* |
| 1564 | rfbLog("rfbProcessFileTransfer() rfbFileTransferRequest:\n"); |
| 1565 | */ |
| 1566 | /* add some space to the end of the buffer as we will be adding a timespec to it */ |
| 1567 | if ((buffer = rfbProcessFileTransferReadBuffer(cl, length))==NULL) return FALSE; |
| 1568 | /* The client requests a File */ |
| 1569 | rfbFilenameTranslate2UNIX(cl, buffer, filename1); |
| 1570 | cl->fileTransfer.fd=open(filename1, O_RDONLY, 0744); |
| 1571 | |
| 1572 | /* |
| 1573 | */ |
| 1574 | if (DB) rfbLog("rfbProcessFileTransfer() rfbFileTransferRequest(\"%s\"->\"%s\") Open: %s fd=%d\n", buffer, filename1, (cl->fileTransfer.fd==-1?"Failed":"Success"), cl->fileTransfer.fd); |
| 1575 | |
| 1576 | if (cl->fileTransfer.fd!=-1) { |
| 1577 | if (fstat(cl->fileTransfer.fd, &statbuf)!=0) { |
| 1578 | close(cl->fileTransfer.fd); |
| 1579 | cl->fileTransfer.fd=-1; |
| 1580 | } |
| 1581 | else |
| 1582 | { |
| 1583 | /* Add the File Time Stamp to the filename */ |
| 1584 | strftime(timespec, sizeof(timespec), "%m/%d/%Y %H:%M",gmtime(&statbuf.st_ctime)); |
| 1585 | buffer=realloc(buffer, length + strlen(timespec) + 2); /* comma, and Null term */ |
| 1586 | if (buffer==NULL) { |
| 1587 | rfbLog("rfbProcessFileTransfer() rfbFileTransferRequest: Failed to malloc %d bytes\n", length + strlen(timespec) + 2); |
| 1588 | return FALSE; |
| 1589 | } |
| 1590 | strcat(buffer,","); |
| 1591 | strcat(buffer, timespec); |
| 1592 | length = strlen(buffer); |
| 1593 | if (DB) rfbLog("rfbProcessFileTransfer() buffer is now: \"%s\"\n", buffer); |
| 1594 | } |
| 1595 | } |
| 1596 | |
| 1597 | /* The viewer supports compression if size==1 */ |
| 1598 | cl->fileTransfer.compressionEnabled = (size==1); |
| 1599 | |
| 1600 | /* |
| 1601 | rfbLog("rfbProcessFileTransfer() rfbFileTransferRequest(\"%s\"->\"%s\")%s\n", buffer, filename1, (size==1?" <Compression Enabled>":"")); |
| 1602 | */ |
| 1603 | |
| 1604 | /* File Size in bytes, 0xFFFFFFFF (-1) means error */ |
| 1605 | retval = rfbSendFileTransferMessage(cl, rfbFileHeader, 0, (cl->fileTransfer.fd==-1 ? -1 : statbuf.st_size), length, buffer); |
| 1606 | |
| 1607 | if (cl->fileTransfer.fd==-1) |
| 1608 | { |
| 1609 | if (buffer!=NULL) free(buffer); |
| 1610 | return retval; |
| 1611 | } |
| 1612 | /* setup filetransfer stuff */ |
| 1613 | cl->fileTransfer.fileSize = statbuf.st_size; |
| 1614 | cl->fileTransfer.numPackets = statbuf.st_size / sz_rfbBlockSize; |
| 1615 | cl->fileTransfer.receiving = 0; |
| 1616 | cl->fileTransfer.sending = 0; /* set when we receive a rfbFileHeader: */ |
| 1617 | |
| 1618 | /* TODO: finish 64-bit file size support */ |
| 1619 | sizeHtmp = 0; |
| 1620 | LOCK(cl->sendMutex); |
| 1621 | if (rfbWriteExact(cl, (char *)&sizeHtmp, 4) < 0) { |
| 1622 | rfbLogPerror("rfbProcessFileTransfer: write"); |
| 1623 | rfbCloseClient(cl); |
| 1624 | UNLOCK(cl->sendMutex); |
| 1625 | if (buffer!=NULL) free(buffer); |
| 1626 | return FALSE; |
| 1627 | } |
| 1628 | UNLOCK(cl->sendMutex); |
| 1629 | break; |
| 1630 | |
| 1631 | case rfbFileHeader: |
| 1632 | /* Destination file (viewer side) is ready for reception (size > 0) or not (size = -1) */ |
| 1633 | if (size==-1) { |
| 1634 | rfbLog("rfbProcessFileTransfer() rfbFileHeader (error, aborting)\n"); |
| 1635 | close(cl->fileTransfer.fd); |
| 1636 | cl->fileTransfer.fd=-1; |
| 1637 | return TRUE; |
| 1638 | } |
| 1639 | |
| 1640 | /* |
| 1641 | rfbLog("rfbProcessFileTransfer() rfbFileHeader (%d bytes of a file)\n", size); |
| 1642 | */ |
| 1643 | |
| 1644 | /* Starts the transfer! */ |
| 1645 | cl->fileTransfer.sending=1; |
| 1646 | return rfbSendFileTransferChunk(cl); |
| 1647 | break; |
| 1648 | |
| 1649 | |
| 1650 | /* |
| 1651 | * sending from the viewer to the server |
| 1652 | */ |
| 1653 | |
| 1654 | case rfbFileTransferOffer: |
| 1655 | /* client is sending a file to us */ |
| 1656 | /* buffer contains full path name (plus FileTime) */ |
| 1657 | /* size contains size of the file */ |
| 1658 | /* |
| 1659 | rfbLog("rfbProcessFileTransfer() rfbFileTransferOffer:\n"); |
| 1660 | */ |
| 1661 | if ((buffer = rfbProcessFileTransferReadBuffer(cl, length))==NULL) return FALSE; |
| 1662 | |
| 1663 | /* Parse the FileTime */ |
| 1664 | p = strrchr(buffer, ','); |
| 1665 | if (p!=NULL) { |
| 1666 | *p = '\0'; |
| 1667 | strcpy(szFileTime, p+1); |
| 1668 | } else |
| 1669 | szFileTime[0]=0; |
| 1670 | |
| 1671 | |
| 1672 | |
| 1673 | /* Need to read in sizeHtmp */ |
| 1674 | if ((n = rfbReadExact(cl, (char *)&sizeHtmp, 4)) <= 0) { |
| 1675 | if (n != 0) |
| 1676 | rfbLogPerror("rfbProcessFileTransfer: read sizeHtmp"); |
| 1677 | rfbCloseClient(cl); |
| 1678 | /* NOTE: don't forget to free(buffer) if you return early! */ |
| 1679 | if (buffer!=NULL) free(buffer); |
| 1680 | return FALSE; |
| 1681 | } |
| 1682 | sizeHtmp = Swap32IfLE(sizeHtmp); |
| 1683 | |
| 1684 | rfbFilenameTranslate2UNIX(cl, buffer, filename1); |
| 1685 | |
| 1686 | /* If the file exists... We can send a rfbFileChecksums back to the client before we send an rfbFileAcceptHeader */ |
| 1687 | /* TODO: Delta Transfer */ |
| 1688 | |
| 1689 | cl->fileTransfer.fd=open(filename1, O_CREAT|O_WRONLY|O_TRUNC, 0744); |
| 1690 | if (DB) rfbLog("rfbProcessFileTransfer() rfbFileTransferOffer(\"%s\"->\"%s\") %s %s fd=%d\n", buffer, filename1, (cl->fileTransfer.fd==-1?"Failed":"Success"), (cl->fileTransfer.fd==-1?strerror(errno):""), cl->fileTransfer.fd); |
| 1691 | /* |
| 1692 | */ |
| 1693 | |
| 1694 | /* File Size in bytes, 0xFFFFFFFF (-1) means error */ |
| 1695 | retval = rfbSendFileTransferMessage(cl, rfbFileAcceptHeader, 0, (cl->fileTransfer.fd==-1 ? -1 : 0), length, buffer); |
| 1696 | if (cl->fileTransfer.fd==-1) { |
| 1697 | free(buffer); |
| 1698 | return retval; |
| 1699 | } |
| 1700 | |
| 1701 | /* setup filetransfer stuff */ |
| 1702 | cl->fileTransfer.fileSize = size; |
| 1703 | cl->fileTransfer.numPackets = size / sz_rfbBlockSize; |
| 1704 | cl->fileTransfer.receiving = 1; |
| 1705 | cl->fileTransfer.sending = 0; |
| 1706 | break; |
| 1707 | |
| 1708 | case rfbFilePacket: |
| 1709 | /* |
| 1710 | rfbLog("rfbProcessFileTransfer() rfbFilePacket:\n"); |
| 1711 | */ |
| 1712 | if ((buffer = rfbProcessFileTransferReadBuffer(cl, length))==NULL) return FALSE; |
| 1713 | if (cl->fileTransfer.fd!=-1) { |
| 1714 | /* buffer contains the contents of the file */ |
| 1715 | if (size==0) |
| 1716 | retval=write(cl->fileTransfer.fd, buffer, length); |
| 1717 | else |
| 1718 | { |
| 1719 | #ifdef LIBVNCSERVER_HAVE_LIBZ |
| 1720 | /* compressed packet */ |
| 1721 | nRet = uncompress(compBuff,&nRawBytes,(const unsigned char*)buffer, length); |
| 1722 | if(nRet == Z_OK) |
| 1723 | retval=write(cl->fileTransfer.fd, (char*)compBuff, nRawBytes); |
| 1724 | else |
| 1725 | retval = -1; |
| 1726 | #else |
| 1727 | /* Write the file out as received... */ |
| 1728 | retval=write(cl->fileTransfer.fd, buffer, length); |
| 1729 | #endif |
| 1730 | } |
| 1731 | if (retval==-1) |
| 1732 | { |
| 1733 | close(cl->fileTransfer.fd); |
| 1734 | cl->fileTransfer.fd=-1; |
| 1735 | cl->fileTransfer.sending = 0; |
| 1736 | cl->fileTransfer.receiving = 0; |
| 1737 | } |
| 1738 | } |
| 1739 | break; |
| 1740 | |
| 1741 | case rfbEndOfFile: |
| 1742 | if (DB) rfbLog("rfbProcessFileTransfer() rfbEndOfFile\n"); |
| 1743 | /* |
| 1744 | */ |
| 1745 | if (cl->fileTransfer.fd!=-1) |
| 1746 | close(cl->fileTransfer.fd); |
| 1747 | cl->fileTransfer.fd=-1; |
| 1748 | cl->fileTransfer.sending = 0; |
| 1749 | cl->fileTransfer.receiving = 0; |
| 1750 | break; |
| 1751 | |
| 1752 | case rfbAbortFileTransfer: |
| 1753 | if (DB) rfbLog("rfbProcessFileTransfer() rfbAbortFileTransfer\n"); |
| 1754 | /* |
| 1755 | */ |
| 1756 | if (cl->fileTransfer.fd!=-1) |
| 1757 | { |
| 1758 | close(cl->fileTransfer.fd); |
| 1759 | cl->fileTransfer.fd=-1; |
| 1760 | cl->fileTransfer.sending = 0; |
| 1761 | cl->fileTransfer.receiving = 0; |
| 1762 | } |
| 1763 | else |
| 1764 | { |
| 1765 | /* We use this message for FileTransfer rights (<=RC18 versions) |
| 1766 | * The client asks for FileTransfer permission |
| 1767 | */ |
| 1768 | if (contentParam == 0) |
| 1769 | { |
| 1770 | rfbLog("rfbProcessFileTransfer() File Transfer Permission DENIED! (Client Version <=RC18)\n"); |
| 1771 | /* Old method for FileTransfer handshake perimssion (<=RC18) (Deny it)*/ |
| 1772 | return rfbSendFileTransferMessage(cl, rfbAbortFileTransfer, 0, -1, 0, ""); |
| 1773 | } |
| 1774 | /* New method is allowed */ |
| 1775 | if (cl->screen->getFileTransferPermission!=NULL) |
| 1776 | { |
| 1777 | if (cl->screen->getFileTransferPermission(cl)==TRUE) |
| 1778 | { |
| 1779 | rfbLog("rfbProcessFileTransfer() File Transfer Permission Granted!\n"); |
| 1780 | return rfbSendFileTransferMessage(cl, rfbFileTransferAccess, 0, 1 , 0, ""); /* Permit */ |
| 1781 | } |
| 1782 | else |
| 1783 | { |
| 1784 | rfbLog("rfbProcessFileTransfer() File Transfer Permission DENIED!\n"); |
| 1785 | return rfbSendFileTransferMessage(cl, rfbFileTransferAccess, 0, -1 , 0, ""); /* Deny */ |
| 1786 | } |
| 1787 | } |
| 1788 | else |
| 1789 | { |
| 1790 | if (cl->screen->permitFileTransfer) |
| 1791 | { |
| 1792 | rfbLog("rfbProcessFileTransfer() File Transfer Permission Granted!\n"); |
| 1793 | return rfbSendFileTransferMessage(cl, rfbFileTransferAccess, 0, 1 , 0, ""); /* Permit */ |
| 1794 | } |
| 1795 | else |
| 1796 | { |
| 1797 | rfbLog("rfbProcessFileTransfer() File Transfer Permission DENIED by default!\n"); |
| 1798 | return rfbSendFileTransferMessage(cl, rfbFileTransferAccess, 0, -1 , 0, ""); /* DEFAULT: DENY (for security) */ |
| 1799 | } |
| 1800 | |
| 1801 | } |
| 1802 | } |
| 1803 | break; |
| 1804 | |
| 1805 | |
| 1806 | case rfbCommand: |
| 1807 | /* |
| 1808 | rfbLog("rfbProcessFileTransfer() rfbCommand:\n"); |
| 1809 | */ |
| 1810 | if ((buffer = rfbProcessFileTransferReadBuffer(cl, length))==NULL) return FALSE; |
| 1811 | switch (contentParam) { |
| 1812 | case rfbCDirCreate: /* Client requests the creation of a directory */ |
| 1813 | rfbFilenameTranslate2UNIX(cl, buffer, filename1); |
| 1814 | retval = mkdir(filename1, 0755); |
| 1815 | if (DB) rfbLog("rfbProcessFileTransfer() rfbCommand: rfbCDirCreate(\"%s\"->\"%s\") %s\n", buffer, filename1, (retval==-1?"Failed":"Success")); |
| 1816 | /* |
| 1817 | */ |
| 1818 | retval = rfbSendFileTransferMessage(cl, rfbCommandReturn, rfbADirCreate, retval, length, buffer); |
| 1819 | if (buffer!=NULL) free(buffer); |
| 1820 | return retval; |
| 1821 | case rfbCFileDelete: /* Client requests the deletion of a file */ |
| 1822 | rfbFilenameTranslate2UNIX(cl, buffer, filename1); |
| 1823 | if (stat(filename1,&statbuf)==0) |
| 1824 | { |
| 1825 | if (S_ISDIR(statbuf.st_mode)) |
| 1826 | retval = rmdir(filename1); |
| 1827 | else |
| 1828 | retval = unlink(filename1); |
| 1829 | } |
| 1830 | else retval=-1; |
| 1831 | retval = rfbSendFileTransferMessage(cl, rfbCommandReturn, rfbAFileDelete, retval, length, buffer); |
| 1832 | if (buffer!=NULL) free(buffer); |
| 1833 | return retval; |
| 1834 | case rfbCFileRename: /* Client requests the Renaming of a file/directory */ |
| 1835 | p = strrchr(buffer, '*'); |
| 1836 | if (p != NULL) |
| 1837 | { |
| 1838 | /* Split into 2 filenames ('*' is a seperator) */ |
| 1839 | *p = '\0'; |
| 1840 | rfbFilenameTranslate2UNIX(cl, buffer, filename1); |
| 1841 | rfbFilenameTranslate2UNIX(cl, p+1, filename2); |
| 1842 | retval = rename(filename1,filename2); |
| 1843 | if (DB) rfbLog("rfbProcessFileTransfer() rfbCommand: rfbCFileRename(\"%s\"->\"%s\" -->> \"%s\"->\"%s\") %s\n", buffer, filename1, p+1, filename2, (retval==-1?"Failed":"Success")); |
| 1844 | /* |
| 1845 | */ |
| 1846 | /* Restore the buffer so the reply is good */ |
| 1847 | *p = '*'; |
| 1848 | retval = rfbSendFileTransferMessage(cl, rfbCommandReturn, rfbAFileRename, retval, length, buffer); |
| 1849 | if (buffer!=NULL) free(buffer); |
| 1850 | return retval; |
| 1851 | } |
| 1852 | break; |
| 1853 | } |
| 1854 | |
| 1855 | break; |
| 1856 | } |
| 1857 | |
| 1858 | /* NOTE: don't forget to free(buffer) if you return early! */ |
| 1859 | if (buffer!=NULL) free(buffer); |
| 1860 | return TRUE; |
| 1861 | } |
| 1862 | |
| 1863 | /* |
| 1864 | * rfbProcessClientNormalMessage is called when the client has sent a normal |
| 1865 | * protocol message. |
| 1866 | */ |
| 1867 | |
| 1868 | static void |
| 1869 | rfbProcessClientNormalMessage(rfbClientPtr cl) |
| 1870 | { |
| 1871 | int n=0; |
| 1872 | rfbClientToServerMsg msg; |
| 1873 | char *str; |
| 1874 | int i; |
| 1875 | uint32_t enc=0; |
| 1876 | uint32_t lastPreferredEncoding = -1; |
| 1877 | char encBuf[64]; |
| 1878 | char encBuf2[64]; |
| 1879 | |
| 1880 | #ifdef LIBVNCSERVER_WITH_WEBSOCKETS |
| 1881 | if (cl->wsctx && webSocketCheckDisconnect(cl)) |
| 1882 | return; |
| 1883 | #endif |
| 1884 | |
| 1885 | if ((n = rfbReadExact(cl, (char *)&msg, 1)) <= 0) { |
| 1886 | if (n != 0) |
| 1887 | rfbLogPerror("rfbProcessClientNormalMessage: read"); |
| 1888 | rfbCloseClient(cl); |
| 1889 | return; |
| 1890 | } |
| 1891 | |
| 1892 | switch (msg.type) { |
| 1893 | |
| 1894 | case rfbSetPixelFormat: |
| 1895 | |
| 1896 | if ((n = rfbReadExact(cl, ((char *)&msg) + 1, |
| 1897 | sz_rfbSetPixelFormatMsg - 1)) <= 0) { |
| 1898 | if (n != 0) |
| 1899 | rfbLogPerror("rfbProcessClientNormalMessage: read"); |
| 1900 | rfbCloseClient(cl); |
| 1901 | return; |
| 1902 | } |
| 1903 | |
| 1904 | cl->format.bitsPerPixel = msg.spf.format.bitsPerPixel; |
| 1905 | cl->format.depth = msg.spf.format.depth; |
| 1906 | cl->format.bigEndian = (msg.spf.format.bigEndian ? TRUE : FALSE); |
| 1907 | cl->format.trueColour = (msg.spf.format.trueColour ? TRUE : FALSE); |
| 1908 | cl->format.redMax = Swap16IfLE(msg.spf.format.redMax); |
| 1909 | cl->format.greenMax = Swap16IfLE(msg.spf.format.greenMax); |
| 1910 | cl->format.blueMax = Swap16IfLE(msg.spf.format.blueMax); |
| 1911 | cl->format.redShift = msg.spf.format.redShift; |
| 1912 | cl->format.greenShift = msg.spf.format.greenShift; |
| 1913 | cl->format.blueShift = msg.spf.format.blueShift; |
| 1914 | |
| 1915 | cl->readyForSetColourMapEntries = TRUE; |
| 1916 | cl->screen->setTranslateFunction(cl); |
| 1917 | |
| 1918 | rfbStatRecordMessageRcvd(cl, msg.type, sz_rfbSetPixelFormatMsg, sz_rfbSetPixelFormatMsg); |
| 1919 | |
| 1920 | return; |
| 1921 | |
| 1922 | |
| 1923 | case rfbFixColourMapEntries: |
| 1924 | if ((n = rfbReadExact(cl, ((char *)&msg) + 1, |
| 1925 | sz_rfbFixColourMapEntriesMsg - 1)) <= 0) { |
| 1926 | if (n != 0) |
| 1927 | rfbLogPerror("rfbProcessClientNormalMessage: read"); |
| 1928 | rfbCloseClient(cl); |
| 1929 | return; |
| 1930 | } |
| 1931 | rfbStatRecordMessageRcvd(cl, msg.type, sz_rfbSetPixelFormatMsg, sz_rfbSetPixelFormatMsg); |
| 1932 | rfbLog("rfbProcessClientNormalMessage: %s", |
| 1933 | "FixColourMapEntries unsupported\n"); |
| 1934 | rfbCloseClient(cl); |
| 1935 | return; |
| 1936 | |
| 1937 | |
| 1938 | /* NOTE: Some clients send us a set of encodings (ie: PointerPos) designed to enable/disable features... |
| 1939 | * We may want to look into this... |
| 1940 | * Example: |
| 1941 | * case rfbEncodingXCursor: |
| 1942 | * cl->enableCursorShapeUpdates = TRUE; |
| 1943 | * |
| 1944 | * Currently: cl->enableCursorShapeUpdates can *never* be turned off... |
| 1945 | */ |
| 1946 | case rfbSetEncodings: |
| 1947 | { |
| 1948 | |
| 1949 | if ((n = rfbReadExact(cl, ((char *)&msg) + 1, |
| 1950 | sz_rfbSetEncodingsMsg - 1)) <= 0) { |
| 1951 | if (n != 0) |
| 1952 | rfbLogPerror("rfbProcessClientNormalMessage: read"); |
| 1953 | rfbCloseClient(cl); |
| 1954 | return; |
| 1955 | } |
| 1956 | |
| 1957 | msg.se.nEncodings = Swap16IfLE(msg.se.nEncodings); |
| 1958 | |
| 1959 | rfbStatRecordMessageRcvd(cl, msg.type, sz_rfbSetEncodingsMsg+(msg.se.nEncodings*4),sz_rfbSetEncodingsMsg+(msg.se.nEncodings*4)); |
| 1960 | |
| 1961 | /* |
| 1962 | * UltraVNC Client has the ability to adapt to changing network environments |
| 1963 | * So, let's give it a change to tell us what it wants now! |
| 1964 | */ |
| 1965 | if (cl->preferredEncoding!=-1) |
| 1966 | lastPreferredEncoding = cl->preferredEncoding; |
| 1967 | |
| 1968 | /* Reset all flags to defaults (allows us to switch between PointerPos and Server Drawn Cursors) */ |
| 1969 | cl->preferredEncoding=-1; |
| 1970 | cl->useCopyRect = FALSE; |
| 1971 | cl->useNewFBSize = FALSE; |
| 1972 | cl->cursorWasChanged = FALSE; |
| 1973 | cl->useRichCursorEncoding = FALSE; |
| 1974 | cl->enableCursorPosUpdates = FALSE; |
| 1975 | cl->enableCursorShapeUpdates = FALSE; |
| 1976 | cl->enableCursorShapeUpdates = FALSE; |
| 1977 | cl->enableLastRectEncoding = FALSE; |
| 1978 | cl->enableKeyboardLedState = FALSE; |
| 1979 | cl->enableSupportedMessages = FALSE; |
| 1980 | cl->enableSupportedEncodings = FALSE; |
| 1981 | cl->enableServerIdentity = FALSE; |
| 1982 | #if defined(LIBVNCSERVER_HAVE_LIBZ) || defined(LIBVNCSERVER_HAVE_LIBPNG) |
| 1983 | cl->tightQualityLevel = -1; |
| 1984 | #ifdef LIBVNCSERVER_HAVE_LIBJPEG |
| 1985 | cl->tightCompressLevel = TIGHT_DEFAULT_COMPRESSION; |
| 1986 | cl->turboSubsampLevel = TURBO_DEFAULT_SUBSAMP; |
| 1987 | cl->turboQualityLevel = -1; |
| 1988 | #endif |
| 1989 | #endif |
| 1990 | |
| 1991 | |
| 1992 | for (i = 0; i < msg.se.nEncodings; i++) { |
| 1993 | if ((n = rfbReadExact(cl, (char *)&enc, 4)) <= 0) { |
| 1994 | if (n != 0) |
| 1995 | rfbLogPerror("rfbProcessClientNormalMessage: read"); |
| 1996 | rfbCloseClient(cl); |
| 1997 | return; |
| 1998 | } |
| 1999 | enc = Swap32IfLE(enc); |
| 2000 | |
| 2001 | switch (enc) { |
| 2002 | |
| 2003 | case rfbEncodingCopyRect: |
| 2004 | cl->useCopyRect = TRUE; |
| 2005 | break; |
| 2006 | case rfbEncodingRaw: |
| 2007 | case rfbEncodingRRE: |
| 2008 | case rfbEncodingCoRRE: |
| 2009 | case rfbEncodingHextile: |
| 2010 | case rfbEncodingUltra: |
| 2011 | #ifdef LIBVNCSERVER_HAVE_LIBZ |
| 2012 | case rfbEncodingZlib: |
| 2013 | case rfbEncodingZRLE: |
| 2014 | case rfbEncodingZYWRLE: |
| 2015 | #ifdef LIBVNCSERVER_HAVE_LIBJPEG |
| 2016 | case rfbEncodingTight: |
| 2017 | #endif |
| 2018 | #endif |
| 2019 | #ifdef LIBVNCSERVER_HAVE_LIBPNG |
| 2020 | case rfbEncodingTightPng: |
| 2021 | #endif |
| 2022 | /* The first supported encoding is the 'preferred' encoding */ |
| 2023 | if (cl->preferredEncoding == -1) |
| 2024 | cl->preferredEncoding = enc; |
| 2025 | |
| 2026 | |
| 2027 | break; |
| 2028 | case rfbEncodingXCursor: |
| 2029 | if(!cl->screen->dontConvertRichCursorToXCursor) { |
| 2030 | rfbLog("Enabling X-style cursor updates for client %s\n", |
| 2031 | cl->host); |
| 2032 | /* if cursor was drawn, hide the cursor */ |
| 2033 | if(!cl->enableCursorShapeUpdates) |
| 2034 | rfbRedrawAfterHideCursor(cl,NULL); |
| 2035 | |
| 2036 | cl->enableCursorShapeUpdates = TRUE; |
| 2037 | cl->cursorWasChanged = TRUE; |
| 2038 | } |
| 2039 | break; |
| 2040 | case rfbEncodingRichCursor: |
| 2041 | rfbLog("Enabling full-color cursor updates for client %s\n", |
| 2042 | cl->host); |
| 2043 | /* if cursor was drawn, hide the cursor */ |
| 2044 | if(!cl->enableCursorShapeUpdates) |
| 2045 | rfbRedrawAfterHideCursor(cl,NULL); |
| 2046 | |
| 2047 | cl->enableCursorShapeUpdates = TRUE; |
| 2048 | cl->useRichCursorEncoding = TRUE; |
| 2049 | cl->cursorWasChanged = TRUE; |
| 2050 | break; |
| 2051 | case rfbEncodingPointerPos: |
| 2052 | if (!cl->enableCursorPosUpdates) { |
| 2053 | rfbLog("Enabling cursor position updates for client %s\n", |
| 2054 | cl->host); |
| 2055 | cl->enableCursorPosUpdates = TRUE; |
| 2056 | cl->cursorWasMoved = TRUE; |
| 2057 | } |
| 2058 | break; |
| 2059 | case rfbEncodingLastRect: |
| 2060 | if (!cl->enableLastRectEncoding) { |
| 2061 | rfbLog("Enabling LastRect protocol extension for client " |
| 2062 | "%s\n", cl->host); |
| 2063 | cl->enableLastRectEncoding = TRUE; |
| 2064 | } |
| 2065 | break; |
| 2066 | case rfbEncodingNewFBSize: |
| 2067 | if (!cl->useNewFBSize) { |
| 2068 | rfbLog("Enabling NewFBSize protocol extension for client " |
| 2069 | "%s\n", cl->host); |
| 2070 | cl->useNewFBSize = TRUE; |
| 2071 | } |
| 2072 | break; |
| 2073 | case rfbEncodingKeyboardLedState: |
| 2074 | if (!cl->enableKeyboardLedState) { |
| 2075 | rfbLog("Enabling KeyboardLedState protocol extension for client " |
| 2076 | "%s\n", cl->host); |
| 2077 | cl->enableKeyboardLedState = TRUE; |
| 2078 | } |
| 2079 | break; |
| 2080 | case rfbEncodingSupportedMessages: |
| 2081 | if (!cl->enableSupportedMessages) { |
| 2082 | rfbLog("Enabling SupportedMessages protocol extension for client " |
| 2083 | "%s\n", cl->host); |
| 2084 | cl->enableSupportedMessages = TRUE; |
| 2085 | } |
| 2086 | break; |
| 2087 | case rfbEncodingSupportedEncodings: |
| 2088 | if (!cl->enableSupportedEncodings) { |
| 2089 | rfbLog("Enabling SupportedEncodings protocol extension for client " |
| 2090 | "%s\n", cl->host); |
| 2091 | cl->enableSupportedEncodings = TRUE; |
| 2092 | } |
| 2093 | break; |
| 2094 | case rfbEncodingServerIdentity: |
| 2095 | if (!cl->enableServerIdentity) { |
| 2096 | rfbLog("Enabling ServerIdentity protocol extension for client " |
| 2097 | "%s\n", cl->host); |
| 2098 | cl->enableServerIdentity = TRUE; |
| 2099 | } |
| 2100 | break; |
| 2101 | case rfbEncodingXvp: |
| 2102 | rfbLog("Enabling Xvp protocol extension for client " |
| 2103 | "%s\n", cl->host); |
| 2104 | if (!rfbSendXvp(cl, 1, rfbXvp_Init)) { |
| 2105 | rfbCloseClient(cl); |
| 2106 | return; |
| 2107 | } |
| 2108 | break; |
| 2109 | default: |
| 2110 | #if defined(LIBVNCSERVER_HAVE_LIBZ) || defined(LIBVNCSERVER_HAVE_LIBPNG) |
| 2111 | if ( enc >= (uint32_t)rfbEncodingCompressLevel0 && |
| 2112 | enc <= (uint32_t)rfbEncodingCompressLevel9 ) { |
| 2113 | cl->zlibCompressLevel = enc & 0x0F; |
| 2114 | #ifdef LIBVNCSERVER_HAVE_LIBJPEG |
| 2115 | cl->tightCompressLevel = enc & 0x0F; |
| 2116 | rfbLog("Using compression level %d for client %s\n", |
| 2117 | cl->tightCompressLevel, cl->host); |
| 2118 | #endif |
| 2119 | } else if ( enc >= (uint32_t)rfbEncodingQualityLevel0 && |
| 2120 | enc <= (uint32_t)rfbEncodingQualityLevel9 ) { |
| 2121 | cl->tightQualityLevel = enc & 0x0F; |
| 2122 | rfbLog("Using image quality level %d for client %s\n", |
| 2123 | cl->tightQualityLevel, cl->host); |
| 2124 | #ifdef LIBVNCSERVER_HAVE_LIBJPEG |
| 2125 | cl->turboQualityLevel = tight2turbo_qual[enc & 0x0F]; |
| 2126 | cl->turboSubsampLevel = tight2turbo_subsamp[enc & 0x0F]; |
| 2127 | rfbLog("Using JPEG subsampling %d, Q%d for client %s\n", |
| 2128 | cl->turboSubsampLevel, cl->turboQualityLevel, cl->host); |
| 2129 | } else if ( enc >= (uint32_t)rfbEncodingFineQualityLevel0 + 1 && |
| 2130 | enc <= (uint32_t)rfbEncodingFineQualityLevel100 ) { |
| 2131 | cl->turboQualityLevel = enc & 0xFF; |
| 2132 | rfbLog("Using fine quality level %d for client %s\n", |
| 2133 | cl->turboQualityLevel, cl->host); |
| 2134 | } else if ( enc >= (uint32_t)rfbEncodingSubsamp1X && |
| 2135 | enc <= (uint32_t)rfbEncodingSubsampGray ) { |
| 2136 | cl->turboSubsampLevel = enc & 0xFF; |
| 2137 | rfbLog("Using subsampling level %d for client %s\n", |
| 2138 | cl->turboSubsampLevel, cl->host); |
| 2139 | #endif |
| 2140 | } else |
| 2141 | #endif |
| 2142 | { |
| 2143 | rfbExtensionData* e; |
| 2144 | for(e = cl->extensions; e;) { |
| 2145 | rfbExtensionData* next = e->next; |
| 2146 | if(e->extension->enablePseudoEncoding && |
| 2147 | e->extension->enablePseudoEncoding(cl, |
| 2148 | &e->data, (int)enc)) |
| 2149 | /* ext handles this encoding */ |
| 2150 | break; |
| 2151 | e = next; |
| 2152 | } |
| 2153 | if(e == NULL) { |
| 2154 | rfbBool handled = FALSE; |
| 2155 | /* if the pseudo encoding is not handled by the |
| 2156 | enabled extensions, search through all |
| 2157 | extensions. */ |
| 2158 | rfbProtocolExtension* e; |
| 2159 | |
| 2160 | for(e = rfbGetExtensionIterator(); e;) { |
| 2161 | int* encs = e->pseudoEncodings; |
| 2162 | while(encs && *encs!=0) { |
| 2163 | if(*encs==(int)enc) { |
| 2164 | void* data = NULL; |
| 2165 | if(!e->enablePseudoEncoding(cl, &data, (int)enc)) { |
| 2166 | rfbLog("Installed extension pretends to handle pseudo encoding 0x%x, but does not!\n",(int)enc); |
| 2167 | } else { |
| 2168 | rfbEnableExtension(cl, e, data); |
| 2169 | handled = TRUE; |
| 2170 | e = NULL; |
| 2171 | break; |
| 2172 | } |
| 2173 | } |
| 2174 | encs++; |
| 2175 | } |
| 2176 | |
| 2177 | if(e) |
| 2178 | e = e->next; |
| 2179 | } |
| 2180 | rfbReleaseExtensionIterator(); |
| 2181 | |
| 2182 | if(!handled) |
| 2183 | rfbLog("rfbProcessClientNormalMessage: " |
| 2184 | "ignoring unsupported encoding type %s\n", |
| 2185 | encodingName(enc,encBuf,sizeof(encBuf))); |
| 2186 | } |
| 2187 | } |
| 2188 | } |
| 2189 | } |
| 2190 | |
| 2191 | |
| 2192 | |
| 2193 | if (cl->preferredEncoding == -1) { |
| 2194 | if (lastPreferredEncoding==-1) { |
| 2195 | cl->preferredEncoding = rfbEncodingRaw; |
| 2196 | rfbLog("Defaulting to %s encoding for client %s\n", encodingName(cl->preferredEncoding,encBuf,sizeof(encBuf)),cl->host); |
| 2197 | } |
| 2198 | else { |
| 2199 | cl->preferredEncoding = lastPreferredEncoding; |
| 2200 | rfbLog("Sticking with %s encoding for client %s\n", encodingName(cl->preferredEncoding,encBuf,sizeof(encBuf)),cl->host); |
| 2201 | } |
| 2202 | } |
| 2203 | else |
| 2204 | { |
| 2205 | if (lastPreferredEncoding==-1) { |
| 2206 | rfbLog("Using %s encoding for client %s\n", encodingName(cl->preferredEncoding,encBuf,sizeof(encBuf)),cl->host); |
| 2207 | } else { |
| 2208 | rfbLog("Switching from %s to %s Encoding for client %s\n", |
| 2209 | encodingName(lastPreferredEncoding,encBuf2,sizeof(encBuf2)), |
| 2210 | encodingName(cl->preferredEncoding,encBuf,sizeof(encBuf)), cl->host); |
| 2211 | } |
| 2212 | } |
| 2213 | |
| 2214 | if (cl->enableCursorPosUpdates && !cl->enableCursorShapeUpdates) { |
| 2215 | rfbLog("Disabling cursor position updates for client %s\n", |
| 2216 | cl->host); |
| 2217 | cl->enableCursorPosUpdates = FALSE; |
| 2218 | } |
| 2219 | |
| 2220 | return; |
| 2221 | } |
| 2222 | |
| 2223 | |
| 2224 | case rfbFramebufferUpdateRequest: |
| 2225 | { |
| 2226 | sraRegionPtr tmpRegion; |
| 2227 | |
| 2228 | if ((n = rfbReadExact(cl, ((char *)&msg) + 1, |
| 2229 | sz_rfbFramebufferUpdateRequestMsg-1)) <= 0) { |
| 2230 | if (n != 0) |
| 2231 | rfbLogPerror("rfbProcessClientNormalMessage: read"); |
| 2232 | rfbCloseClient(cl); |
| 2233 | return; |
| 2234 | } |
| 2235 | |
| 2236 | rfbStatRecordMessageRcvd(cl, msg.type, sz_rfbFramebufferUpdateRequestMsg,sz_rfbFramebufferUpdateRequestMsg); |
| 2237 | |
| 2238 | /* The values come in based on the scaled screen, we need to convert them to |
| 2239 | * values based on the main screen's coordinate system |
| 2240 | */ |
| 2241 | if(!rectSwapIfLEAndClip(&msg.fur.x,&msg.fur.y,&msg.fur.w,&msg.fur.h,cl)) |
| 2242 | { |
| 2243 | rfbLog("Warning, ignoring rfbFramebufferUpdateRequest: %dXx%dY-%dWx%dH\n",msg.fur.x, msg.fur.y, msg.fur.w, msg.fur.h); |
| 2244 | return; |
| 2245 | } |
| 2246 | |
| 2247 | |
| 2248 | tmpRegion = |
| 2249 | sraRgnCreateRect(msg.fur.x, |
| 2250 | msg.fur.y, |
| 2251 | msg.fur.x+msg.fur.w, |
| 2252 | msg.fur.y+msg.fur.h); |
| 2253 | |
| 2254 | LOCK(cl->updateMutex); |
| 2255 | sraRgnOr(cl->requestedRegion,tmpRegion); |
| 2256 | |
| 2257 | if (!cl->readyForSetColourMapEntries) { |
| 2258 | /* client hasn't sent a SetPixelFormat so is using server's */ |
| 2259 | cl->readyForSetColourMapEntries = TRUE; |
| 2260 | if (!cl->format.trueColour) { |
| 2261 | if (!rfbSetClientColourMap(cl, 0, 0)) { |
| 2262 | sraRgnDestroy(tmpRegion); |
| 2263 | TSIGNAL(cl->updateCond); |
| 2264 | UNLOCK(cl->updateMutex); |
| 2265 | return; |
| 2266 | } |
| 2267 | } |
| 2268 | } |
| 2269 | |
| 2270 | if (!msg.fur.incremental) { |
| 2271 | sraRgnOr(cl->modifiedRegion,tmpRegion); |
| 2272 | sraRgnSubtract(cl->copyRegion,tmpRegion); |
| 2273 | } |
| 2274 | TSIGNAL(cl->updateCond); |
| 2275 | UNLOCK(cl->updateMutex); |
| 2276 | |
| 2277 | sraRgnDestroy(tmpRegion); |
| 2278 | |
| 2279 | return; |
| 2280 | } |
| 2281 | |
| 2282 | case rfbKeyEvent: |
| 2283 | |
| 2284 | if ((n = rfbReadExact(cl, ((char *)&msg) + 1, |
| 2285 | sz_rfbKeyEventMsg - 1)) <= 0) { |
| 2286 | if (n != 0) |
| 2287 | rfbLogPerror("rfbProcessClientNormalMessage: read"); |
| 2288 | rfbCloseClient(cl); |
| 2289 | return; |
| 2290 | } |
| 2291 | |
| 2292 | rfbStatRecordMessageRcvd(cl, msg.type, sz_rfbKeyEventMsg, sz_rfbKeyEventMsg); |
| 2293 | |
| 2294 | if(!cl->viewOnly) { |
| 2295 | cl->screen->kbdAddEvent(msg.ke.down, (rfbKeySym)Swap32IfLE(msg.ke.key), cl); |
| 2296 | } |
| 2297 | |
| 2298 | return; |
| 2299 | |
| 2300 | |
| 2301 | case rfbPointerEvent: |
| 2302 | |
| 2303 | if ((n = rfbReadExact(cl, ((char *)&msg) + 1, |
| 2304 | sz_rfbPointerEventMsg - 1)) <= 0) { |
| 2305 | if (n != 0) |
| 2306 | rfbLogPerror("rfbProcessClientNormalMessage: read"); |
| 2307 | rfbCloseClient(cl); |
| 2308 | return; |
| 2309 | } |
| 2310 | |
| 2311 | rfbStatRecordMessageRcvd(cl, msg.type, sz_rfbPointerEventMsg, sz_rfbPointerEventMsg); |
| 2312 | |
| 2313 | if (cl->screen->pointerClient && cl->screen->pointerClient != cl) |
| 2314 | return; |
| 2315 | |
| 2316 | if (msg.pe.buttonMask == 0) |
| 2317 | cl->screen->pointerClient = NULL; |
| 2318 | else |
| 2319 | cl->screen->pointerClient = cl; |
| 2320 | |
| 2321 | if(!cl->viewOnly) { |
| 2322 | if (msg.pe.buttonMask != cl->lastPtrButtons || |
| 2323 | cl->screen->deferPtrUpdateTime == 0) { |
| 2324 | cl->screen->ptrAddEvent(msg.pe.buttonMask, |
| 2325 | ScaleX(cl->scaledScreen, cl->screen, Swap16IfLE(msg.pe.x)), |
| 2326 | ScaleY(cl->scaledScreen, cl->screen, Swap16IfLE(msg.pe.y)), |
| 2327 | cl); |
| 2328 | cl->lastPtrButtons = msg.pe.buttonMask; |
| 2329 | } else { |
| 2330 | cl->lastPtrX = ScaleX(cl->scaledScreen, cl->screen, Swap16IfLE(msg.pe.x)); |
| 2331 | cl->lastPtrY = ScaleY(cl->scaledScreen, cl->screen, Swap16IfLE(msg.pe.y)); |
| 2332 | cl->lastPtrButtons = msg.pe.buttonMask; |
| 2333 | } |
| 2334 | } |
| 2335 | return; |
| 2336 | |
| 2337 | |
| 2338 | case rfbFileTransfer: |
| 2339 | if ((n = rfbReadExact(cl, ((char *)&msg) + 1, |
| 2340 | sz_rfbFileTransferMsg - 1)) <= 0) { |
| 2341 | if (n != 0) |
| 2342 | rfbLogPerror("rfbProcessClientNormalMessage: read"); |
| 2343 | rfbCloseClient(cl); |
| 2344 | return; |
| 2345 | } |
| 2346 | msg.ft.size = Swap32IfLE(msg.ft.size); |
| 2347 | msg.ft.length = Swap32IfLE(msg.ft.length); |
| 2348 | /* record statistics in rfbProcessFileTransfer as length is filled with garbage when it is not valid */ |
| 2349 | rfbProcessFileTransfer(cl, msg.ft.contentType, msg.ft.contentParam, msg.ft.size, msg.ft.length); |
| 2350 | return; |
| 2351 | |
| 2352 | case rfbSetSW: |
| 2353 | if ((n = rfbReadExact(cl, ((char *)&msg) + 1, |
| 2354 | sz_rfbSetSWMsg - 1)) <= 0) { |
| 2355 | if (n != 0) |
| 2356 | rfbLogPerror("rfbProcessClientNormalMessage: read"); |
| 2357 | rfbCloseClient(cl); |
| 2358 | return; |
| 2359 | } |
| 2360 | msg.sw.x = Swap16IfLE(msg.sw.x); |
| 2361 | msg.sw.y = Swap16IfLE(msg.sw.y); |
| 2362 | rfbStatRecordMessageRcvd(cl, msg.type, sz_rfbSetSWMsg, sz_rfbSetSWMsg); |
| 2363 | /* msg.sw.status is not initialized in the ultraVNC viewer and contains random numbers (why???) */ |
| 2364 | |
| 2365 | rfbLog("Received a rfbSetSingleWindow(%d x, %d y)\n", msg.sw.x, msg.sw.y); |
| 2366 | if (cl->screen->setSingleWindow!=NULL) |
| 2367 | cl->screen->setSingleWindow(cl, msg.sw.x, msg.sw.y); |
| 2368 | return; |
| 2369 | |
| 2370 | case rfbSetServerInput: |
| 2371 | if ((n = rfbReadExact(cl, ((char *)&msg) + 1, |
| 2372 | sz_rfbSetServerInputMsg - 1)) <= 0) { |
| 2373 | if (n != 0) |
| 2374 | rfbLogPerror("rfbProcessClientNormalMessage: read"); |
| 2375 | rfbCloseClient(cl); |
| 2376 | return; |
| 2377 | } |
| 2378 | rfbStatRecordMessageRcvd(cl, msg.type, sz_rfbSetServerInputMsg, sz_rfbSetServerInputMsg); |
| 2379 | |
| 2380 | /* msg.sim.pad is not initialized in the ultraVNC viewer and contains random numbers (why???) */ |
| 2381 | /* msg.sim.pad = Swap16IfLE(msg.sim.pad); */ |
| 2382 | |
| 2383 | rfbLog("Received a rfbSetServerInput(%d status)\n", msg.sim.status); |
| 2384 | if (cl->screen->setServerInput!=NULL) |
| 2385 | cl->screen->setServerInput(cl, msg.sim.status); |
| 2386 | return; |
| 2387 | |
| 2388 | case rfbTextChat: |
| 2389 | if ((n = rfbReadExact(cl, ((char *)&msg) + 1, |
| 2390 | sz_rfbTextChatMsg - 1)) <= 0) { |
| 2391 | if (n != 0) |
| 2392 | rfbLogPerror("rfbProcessClientNormalMessage: read"); |
| 2393 | rfbCloseClient(cl); |
| 2394 | return; |
| 2395 | } |
| 2396 | |
| 2397 | msg.tc.pad2 = Swap16IfLE(msg.tc.pad2); |
| 2398 | msg.tc.length = Swap32IfLE(msg.tc.length); |
| 2399 | |
| 2400 | switch (msg.tc.length) { |
| 2401 | case rfbTextChatOpen: |
| 2402 | case rfbTextChatClose: |
| 2403 | case rfbTextChatFinished: |
| 2404 | /* commands do not have text following */ |
| 2405 | /* Why couldn't they have used the pad byte??? */ |
| 2406 | str=NULL; |
| 2407 | rfbStatRecordMessageRcvd(cl, msg.type, sz_rfbTextChatMsg, sz_rfbTextChatMsg); |
| 2408 | break; |
| 2409 | default: |
| 2410 | if ((msg.tc.length>0) && (msg.tc.length<rfbTextMaxSize)) |
| 2411 | { |
| 2412 | str = (char *)malloc(msg.tc.length); |
| 2413 | if (str==NULL) |
| 2414 | { |
| 2415 | rfbLog("Unable to malloc %d bytes for a TextChat Message\n", msg.tc.length); |
| 2416 | rfbCloseClient(cl); |
| 2417 | return; |
| 2418 | } |
| 2419 | if ((n = rfbReadExact(cl, str, msg.tc.length)) <= 0) { |
| 2420 | if (n != 0) |
| 2421 | rfbLogPerror("rfbProcessClientNormalMessage: read"); |
| 2422 | free(str); |
| 2423 | rfbCloseClient(cl); |
| 2424 | return; |
| 2425 | } |
| 2426 | rfbStatRecordMessageRcvd(cl, msg.type, sz_rfbTextChatMsg+msg.tc.length, sz_rfbTextChatMsg+msg.tc.length); |
| 2427 | } |
| 2428 | else |
| 2429 | { |
| 2430 | /* This should never happen */ |
| 2431 | rfbLog("client sent us a Text Message that is too big %d>%d\n", msg.tc.length, rfbTextMaxSize); |
| 2432 | rfbCloseClient(cl); |
| 2433 | return; |
| 2434 | } |
| 2435 | } |
| 2436 | |
| 2437 | /* Note: length can be commands: rfbTextChatOpen, rfbTextChatClose, and rfbTextChatFinished |
| 2438 | * at which point, the str is NULL (as it is not sent) |
| 2439 | */ |
| 2440 | if (cl->screen->setTextChat!=NULL) |
| 2441 | cl->screen->setTextChat(cl, msg.tc.length, str); |
| 2442 | |
| 2443 | free(str); |
| 2444 | return; |
| 2445 | |
| 2446 | |
| 2447 | case rfbClientCutText: |
| 2448 | |
| 2449 | if ((n = rfbReadExact(cl, ((char *)&msg) + 1, |
| 2450 | sz_rfbClientCutTextMsg - 1)) <= 0) { |
| 2451 | if (n != 0) |
| 2452 | rfbLogPerror("rfbProcessClientNormalMessage: read"); |
| 2453 | rfbCloseClient(cl); |
| 2454 | return; |
| 2455 | } |
| 2456 | |
| 2457 | msg.cct.length = Swap32IfLE(msg.cct.length); |
| 2458 | |
| 2459 | str = (char *)malloc(msg.cct.length); |
| 2460 | |
| 2461 | if ((n = rfbReadExact(cl, str, msg.cct.length)) <= 0) { |
| 2462 | if (n != 0) |
| 2463 | rfbLogPerror("rfbProcessClientNormalMessage: read"); |
| 2464 | free(str); |
| 2465 | rfbCloseClient(cl); |
| 2466 | return; |
| 2467 | } |
| 2468 | rfbStatRecordMessageRcvd(cl, msg.type, sz_rfbClientCutTextMsg+msg.cct.length, sz_rfbClientCutTextMsg+msg.cct.length); |
| 2469 | if(!cl->viewOnly) { |
| 2470 | cl->screen->setXCutText(str, msg.cct.length, cl); |
| 2471 | } |
| 2472 | free(str); |
| 2473 | |
| 2474 | return; |
| 2475 | |
| 2476 | case rfbPalmVNCSetScaleFactor: |
| 2477 | cl->PalmVNC = TRUE; |
| 2478 | if ((n = rfbReadExact(cl, ((char *)&msg) + 1, |
| 2479 | sz_rfbSetScaleMsg - 1)) <= 0) { |
| 2480 | if (n != 0) |
| 2481 | rfbLogPerror("rfbProcessClientNormalMessage: read"); |
| 2482 | rfbCloseClient(cl); |
| 2483 | return; |
| 2484 | } |
| 2485 | rfbStatRecordMessageRcvd(cl, msg.type, sz_rfbSetScaleMsg, sz_rfbSetScaleMsg); |
| 2486 | rfbLog("rfbSetScale(%d)\n", msg.ssc.scale); |
| 2487 | rfbScalingSetup(cl,cl->screen->width/msg.ssc.scale, cl->screen->height/msg.ssc.scale); |
| 2488 | |
| 2489 | rfbSendNewScaleSize(cl); |
| 2490 | return; |
| 2491 | |
| 2492 | case rfbSetScale: |
| 2493 | |
| 2494 | if ((n = rfbReadExact(cl, ((char *)&msg) + 1, |
| 2495 | sz_rfbSetScaleMsg - 1)) <= 0) { |
| 2496 | if (n != 0) |
| 2497 | rfbLogPerror("rfbProcessClientNormalMessage: read"); |
| 2498 | rfbCloseClient(cl); |
| 2499 | return; |
| 2500 | } |
| 2501 | rfbStatRecordMessageRcvd(cl, msg.type, sz_rfbSetScaleMsg, sz_rfbSetScaleMsg); |
| 2502 | rfbLog("rfbSetScale(%d)\n", msg.ssc.scale); |
| 2503 | rfbScalingSetup(cl,cl->screen->width/msg.ssc.scale, cl->screen->height/msg.ssc.scale); |
| 2504 | |
| 2505 | rfbSendNewScaleSize(cl); |
| 2506 | return; |
| 2507 | |
| 2508 | case rfbXvp: |
| 2509 | |
| 2510 | if ((n = rfbReadExact(cl, ((char *)&msg) + 1, |
| 2511 | sz_rfbXvpMsg - 1)) <= 0) { |
| 2512 | if (n != 0) |
| 2513 | rfbLogPerror("rfbProcessClientNormalMessage: read"); |
| 2514 | rfbCloseClient(cl); |
| 2515 | return; |
| 2516 | } |
| 2517 | rfbStatRecordMessageRcvd(cl, msg.type, sz_rfbXvpMsg, sz_rfbXvpMsg); |
| 2518 | |
| 2519 | /* only version when is defined, so echo back a fail */ |
| 2520 | if(msg.xvp.version != 1) { |
| 2521 | rfbSendXvp(cl, msg.xvp.version, rfbXvp_Fail); |
| 2522 | } |
| 2523 | else { |
| 2524 | /* if the hook exists and fails, send a fail msg */ |
| 2525 | if(cl->screen->xvpHook && !cl->screen->xvpHook(cl, msg.xvp.version, msg.xvp.code)) |
| 2526 | rfbSendXvp(cl, 1, rfbXvp_Fail); |
| 2527 | } |
| 2528 | return; |
| 2529 | |
| 2530 | default: |
| 2531 | { |
| 2532 | rfbExtensionData *e,*next; |
| 2533 | |
| 2534 | for(e=cl->extensions; e;) { |
| 2535 | next = e->next; |
| 2536 | if(e->extension->handleMessage && |
| 2537 | e->extension->handleMessage(cl, e->data, &msg)) |
| 2538 | { |
| 2539 | rfbStatRecordMessageRcvd(cl, msg.type, 0, 0); /* Extension should handle this */ |
| 2540 | return; |
| 2541 | } |
| 2542 | e = next; |
| 2543 | } |
| 2544 | |
| 2545 | rfbLog("rfbProcessClientNormalMessage: unknown message type %d\n", |
| 2546 | msg.type); |
| 2547 | rfbLog(" ... closing connection\n"); |
| 2548 | rfbCloseClient(cl); |
| 2549 | return; |
| 2550 | } |
| 2551 | } |
| 2552 | } |
| 2553 | |
| 2554 | |
| 2555 | |
| 2556 | /* |
| 2557 | * rfbSendFramebufferUpdate - send the currently pending framebuffer update to |
| 2558 | * the RFB client. |
| 2559 | * givenUpdateRegion is not changed. |
| 2560 | */ |
| 2561 | |
| 2562 | rfbBool |
| 2563 | rfbSendFramebufferUpdate(rfbClientPtr cl, |
| 2564 | sraRegionPtr givenUpdateRegion) |
| 2565 | { |
| 2566 | sraRectangleIterator* i=NULL; |
| 2567 | sraRect rect; |
| 2568 | int nUpdateRegionRects; |
| 2569 | rfbFramebufferUpdateMsg *fu = (rfbFramebufferUpdateMsg *)cl->updateBuf; |
| 2570 | sraRegionPtr updateRegion,updateCopyRegion,tmpRegion; |
| 2571 | int dx, dy; |
| 2572 | rfbBool sendCursorShape = FALSE; |
| 2573 | rfbBool sendCursorPos = FALSE; |
| 2574 | rfbBool sendKeyboardLedState = FALSE; |
| 2575 | rfbBool sendSupportedMessages = FALSE; |
| 2576 | rfbBool sendSupportedEncodings = FALSE; |
| 2577 | rfbBool sendServerIdentity = FALSE; |
| 2578 | rfbBool result = TRUE; |
| 2579 | |
| 2580 | |
| 2581 | if(cl->screen->displayHook) |
| 2582 | cl->screen->displayHook(cl); |
| 2583 | |
| 2584 | /* |
| 2585 | * If framebuffer size was changed and the client supports NewFBSize |
| 2586 | * encoding, just send NewFBSize marker and return. |
| 2587 | */ |
| 2588 | |
| 2589 | if (cl->useNewFBSize && cl->newFBSizePending) { |
| 2590 | LOCK(cl->updateMutex); |
| 2591 | cl->newFBSizePending = FALSE; |
| 2592 | UNLOCK(cl->updateMutex); |
| 2593 | fu->type = rfbFramebufferUpdate; |
| 2594 | fu->nRects = Swap16IfLE(1); |
| 2595 | cl->ublen = sz_rfbFramebufferUpdateMsg; |
| 2596 | if (!rfbSendNewFBSize(cl, cl->scaledScreen->width, cl->scaledScreen->height)) { |
| 2597 | if(cl->screen->displayFinishedHook) |
| 2598 | cl->screen->displayFinishedHook(cl, FALSE); |
| 2599 | return FALSE; |
| 2600 | } |
| 2601 | result = rfbSendUpdateBuf(cl); |
| 2602 | if(cl->screen->displayFinishedHook) |
| 2603 | cl->screen->displayFinishedHook(cl, result); |
| 2604 | return result; |
| 2605 | } |
| 2606 | |
| 2607 | /* |
| 2608 | * If this client understands cursor shape updates, cursor should be |
| 2609 | * removed from the framebuffer. Otherwise, make sure it's put up. |
| 2610 | */ |
| 2611 | |
| 2612 | if (cl->enableCursorShapeUpdates) { |
| 2613 | if (cl->cursorWasChanged && cl->readyForSetColourMapEntries) |
| 2614 | sendCursorShape = TRUE; |
| 2615 | } |
| 2616 | |
| 2617 | /* |
| 2618 | * Do we plan to send cursor position update? |
| 2619 | */ |
| 2620 | |
| 2621 | if (cl->enableCursorPosUpdates && cl->cursorWasMoved) |
| 2622 | sendCursorPos = TRUE; |
| 2623 | |
| 2624 | /* |
| 2625 | * Do we plan to send a keyboard state update? |
| 2626 | */ |
| 2627 | if ((cl->enableKeyboardLedState) && |
| 2628 | (cl->screen->getKeyboardLedStateHook!=NULL)) |
| 2629 | { |
| 2630 | int x; |
| 2631 | x=cl->screen->getKeyboardLedStateHook(cl->screen); |
| 2632 | if (x!=cl->lastKeyboardLedState) |
| 2633 | { |
| 2634 | sendKeyboardLedState = TRUE; |
| 2635 | cl->lastKeyboardLedState=x; |
| 2636 | } |
| 2637 | } |
| 2638 | |
| 2639 | /* |
| 2640 | * Do we plan to send a rfbEncodingSupportedMessages? |
| 2641 | */ |
| 2642 | if (cl->enableSupportedMessages) |
| 2643 | { |
| 2644 | sendSupportedMessages = TRUE; |
| 2645 | /* We only send this message ONCE <per setEncodings message received> |
| 2646 | * (We disable it here) |
| 2647 | */ |
| 2648 | cl->enableSupportedMessages = FALSE; |
| 2649 | } |
| 2650 | /* |
| 2651 | * Do we plan to send a rfbEncodingSupportedEncodings? |
| 2652 | */ |
| 2653 | if (cl->enableSupportedEncodings) |
| 2654 | { |
| 2655 | sendSupportedEncodings = TRUE; |
| 2656 | /* We only send this message ONCE <per setEncodings message received> |
| 2657 | * (We disable it here) |
| 2658 | */ |
| 2659 | cl->enableSupportedEncodings = FALSE; |
| 2660 | } |
| 2661 | /* |
| 2662 | * Do we plan to send a rfbEncodingServerIdentity? |
| 2663 | */ |
| 2664 | if (cl->enableServerIdentity) |
| 2665 | { |
| 2666 | sendServerIdentity = TRUE; |
| 2667 | /* We only send this message ONCE <per setEncodings message received> |
| 2668 | * (We disable it here) |
| 2669 | */ |
| 2670 | cl->enableServerIdentity = FALSE; |
| 2671 | } |
| 2672 | |
| 2673 | LOCK(cl->updateMutex); |
| 2674 | |
| 2675 | /* |
| 2676 | * The modifiedRegion may overlap the destination copyRegion. We remove |
| 2677 | * any overlapping bits from the copyRegion (since they'd only be |
| 2678 | * overwritten anyway). |
| 2679 | */ |
| 2680 | |
| 2681 | sraRgnSubtract(cl->copyRegion,cl->modifiedRegion); |
| 2682 | |
| 2683 | /* |
| 2684 | * The client is interested in the region requestedRegion. The region |
| 2685 | * which should be updated now is the intersection of requestedRegion |
| 2686 | * and the union of modifiedRegion and copyRegion. If it's empty then |
| 2687 | * no update is needed. |
| 2688 | */ |
| 2689 | |
| 2690 | updateRegion = sraRgnCreateRgn(givenUpdateRegion); |
| 2691 | if(cl->screen->progressiveSliceHeight>0) { |
| 2692 | int height=cl->screen->progressiveSliceHeight, |
| 2693 | y=cl->progressiveSliceY; |
| 2694 | sraRegionPtr bbox=sraRgnBBox(updateRegion); |
| 2695 | sraRect rect; |
| 2696 | if(sraRgnPopRect(bbox,&rect,0)) { |
| 2697 | sraRegionPtr slice; |
| 2698 | if(y<rect.y1 || y>=rect.y2) |
| 2699 | y=rect.y1; |
| 2700 | slice=sraRgnCreateRect(0,y,cl->screen->width,y+height); |
| 2701 | sraRgnAnd(updateRegion,slice); |
| 2702 | sraRgnDestroy(slice); |
| 2703 | } |
| 2704 | sraRgnDestroy(bbox); |
| 2705 | y+=height; |
| 2706 | if(y>=cl->screen->height) |
| 2707 | y=0; |
| 2708 | cl->progressiveSliceY=y; |
| 2709 | } |
| 2710 | |
| 2711 | sraRgnOr(updateRegion,cl->copyRegion); |
| 2712 | if(!sraRgnAnd(updateRegion,cl->requestedRegion) && |
| 2713 | sraRgnEmpty(updateRegion) && |
| 2714 | (cl->enableCursorShapeUpdates || |
| 2715 | (cl->cursorX == cl->screen->cursorX && cl->cursorY == cl->screen->cursorY)) && |
| 2716 | !sendCursorShape && !sendCursorPos && !sendKeyboardLedState && |
| 2717 | !sendSupportedMessages && !sendSupportedEncodings && !sendServerIdentity) { |
| 2718 | sraRgnDestroy(updateRegion); |
| 2719 | UNLOCK(cl->updateMutex); |
| 2720 | if(cl->screen->displayFinishedHook) |
| 2721 | cl->screen->displayFinishedHook(cl, TRUE); |
| 2722 | return TRUE; |
| 2723 | } |
| 2724 | |
| 2725 | /* |
| 2726 | * We assume that the client doesn't have any pixel data outside the |
| 2727 | * requestedRegion. In other words, both the source and destination of a |
| 2728 | * copy must lie within requestedRegion. So the region we can send as a |
| 2729 | * copy is the intersection of the copyRegion with both the requestedRegion |
| 2730 | * and the requestedRegion translated by the amount of the copy. We set |
| 2731 | * updateCopyRegion to this. |
| 2732 | */ |
| 2733 | |
| 2734 | updateCopyRegion = sraRgnCreateRgn(cl->copyRegion); |
| 2735 | sraRgnAnd(updateCopyRegion,cl->requestedRegion); |
| 2736 | tmpRegion = sraRgnCreateRgn(cl->requestedRegion); |
| 2737 | sraRgnOffset(tmpRegion,cl->copyDX,cl->copyDY); |
| 2738 | sraRgnAnd(updateCopyRegion,tmpRegion); |
| 2739 | sraRgnDestroy(tmpRegion); |
| 2740 | dx = cl->copyDX; |
| 2741 | dy = cl->copyDY; |
| 2742 | |
| 2743 | /* |
| 2744 | * Next we remove updateCopyRegion from updateRegion so that updateRegion |
| 2745 | * is the part of this update which is sent as ordinary pixel data (i.e not |
| 2746 | * a copy). |
| 2747 | */ |
| 2748 | |
| 2749 | sraRgnSubtract(updateRegion,updateCopyRegion); |
| 2750 | |
| 2751 | /* |
| 2752 | * Finally we leave modifiedRegion to be the remainder (if any) of parts of |
| 2753 | * the screen which are modified but outside the requestedRegion. We also |
| 2754 | * empty both the requestedRegion and the copyRegion - note that we never |
| 2755 | * carry over a copyRegion for a future update. |
| 2756 | */ |
| 2757 | |
| 2758 | sraRgnOr(cl->modifiedRegion,cl->copyRegion); |
| 2759 | sraRgnSubtract(cl->modifiedRegion,updateRegion); |
| 2760 | sraRgnSubtract(cl->modifiedRegion,updateCopyRegion); |
| 2761 | |
| 2762 | sraRgnMakeEmpty(cl->requestedRegion); |
| 2763 | sraRgnMakeEmpty(cl->copyRegion); |
| 2764 | cl->copyDX = 0; |
| 2765 | cl->copyDY = 0; |
| 2766 | |
| 2767 | UNLOCK(cl->updateMutex); |
| 2768 | |
| 2769 | if (!cl->enableCursorShapeUpdates) { |
| 2770 | if(cl->cursorX != cl->screen->cursorX || cl->cursorY != cl->screen->cursorY) { |
| 2771 | rfbRedrawAfterHideCursor(cl,updateRegion); |
| 2772 | LOCK(cl->screen->cursorMutex); |
| 2773 | cl->cursorX = cl->screen->cursorX; |
| 2774 | cl->cursorY = cl->screen->cursorY; |
| 2775 | UNLOCK(cl->screen->cursorMutex); |
| 2776 | rfbRedrawAfterHideCursor(cl,updateRegion); |
| 2777 | } |
| 2778 | rfbShowCursor(cl); |
| 2779 | } |
| 2780 | |
| 2781 | /* |
| 2782 | * Now send the update. |
| 2783 | */ |
| 2784 | |
| 2785 | rfbStatRecordMessageSent(cl, rfbFramebufferUpdate, 0, 0); |
| 2786 | if (cl->preferredEncoding == rfbEncodingCoRRE) { |
| 2787 | nUpdateRegionRects = 0; |
| 2788 | |
| 2789 | for(i = sraRgnGetIterator(updateRegion); sraRgnIteratorNext(i,&rect);){ |
| 2790 | int x = rect.x1; |
| 2791 | int y = rect.y1; |
| 2792 | int w = rect.x2 - x; |
| 2793 | int h = rect.y2 - y; |
| 2794 | int rectsPerRow, rows; |
| 2795 | /* We need to count the number of rects in the scaled screen */ |
| 2796 | if (cl->screen!=cl->scaledScreen) |
| 2797 | rfbScaledCorrection(cl->screen, cl->scaledScreen, &x, &y, &w, &h, "rfbSendFramebufferUpdate"); |
| 2798 | rectsPerRow = (w-1)/cl->correMaxWidth+1; |
| 2799 | rows = (h-1)/cl->correMaxHeight+1; |
| 2800 | nUpdateRegionRects += rectsPerRow*rows; |
| 2801 | } |
| 2802 | sraRgnReleaseIterator(i); i=NULL; |
| 2803 | } else if (cl->preferredEncoding == rfbEncodingUltra) { |
| 2804 | nUpdateRegionRects = 0; |
| 2805 | |
| 2806 | for(i = sraRgnGetIterator(updateRegion); sraRgnIteratorNext(i,&rect);){ |
| 2807 | int x = rect.x1; |
| 2808 | int y = rect.y1; |
| 2809 | int w = rect.x2 - x; |
| 2810 | int h = rect.y2 - y; |
| 2811 | /* We need to count the number of rects in the scaled screen */ |
| 2812 | if (cl->screen!=cl->scaledScreen) |
| 2813 | rfbScaledCorrection(cl->screen, cl->scaledScreen, &x, &y, &w, &h, "rfbSendFramebufferUpdate"); |
| 2814 | nUpdateRegionRects += (((h-1) / (ULTRA_MAX_SIZE( w ) / w)) + 1); |
| 2815 | } |
| 2816 | sraRgnReleaseIterator(i); i=NULL; |
| 2817 | #ifdef LIBVNCSERVER_HAVE_LIBZ |
| 2818 | } else if (cl->preferredEncoding == rfbEncodingZlib) { |
| 2819 | nUpdateRegionRects = 0; |
| 2820 | |
| 2821 | for(i = sraRgnGetIterator(updateRegion); sraRgnIteratorNext(i,&rect);){ |
| 2822 | int x = rect.x1; |
| 2823 | int y = rect.y1; |
| 2824 | int w = rect.x2 - x; |
| 2825 | int h = rect.y2 - y; |
| 2826 | /* We need to count the number of rects in the scaled screen */ |
| 2827 | if (cl->screen!=cl->scaledScreen) |
| 2828 | rfbScaledCorrection(cl->screen, cl->scaledScreen, &x, &y, &w, &h, "rfbSendFramebufferUpdate"); |
| 2829 | nUpdateRegionRects += (((h-1) / (ZLIB_MAX_SIZE( w ) / w)) + 1); |
| 2830 | } |
| 2831 | sraRgnReleaseIterator(i); i=NULL; |
| 2832 | #ifdef LIBVNCSERVER_HAVE_LIBJPEG |
| 2833 | } else if (cl->preferredEncoding == rfbEncodingTight) { |
| 2834 | nUpdateRegionRects = 0; |
| 2835 | |
| 2836 | for(i = sraRgnGetIterator(updateRegion); sraRgnIteratorNext(i,&rect);){ |
| 2837 | int x = rect.x1; |
| 2838 | int y = rect.y1; |
| 2839 | int w = rect.x2 - x; |
| 2840 | int h = rect.y2 - y; |
| 2841 | int n; |
| 2842 | /* We need to count the number of rects in the scaled screen */ |
| 2843 | if (cl->screen!=cl->scaledScreen) |
| 2844 | rfbScaledCorrection(cl->screen, cl->scaledScreen, &x, &y, &w, &h, "rfbSendFramebufferUpdate"); |
| 2845 | n = rfbNumCodedRectsTight(cl, x, y, w, h); |
| 2846 | if (n == 0) { |
| 2847 | nUpdateRegionRects = 0xFFFF; |
| 2848 | break; |
| 2849 | } |
| 2850 | nUpdateRegionRects += n; |
| 2851 | } |
| 2852 | sraRgnReleaseIterator(i); i=NULL; |
| 2853 | #endif |
| 2854 | #endif |
| 2855 | #if defined(LIBVNCSERVER_HAVE_LIBJPEG) && defined(LIBVNCSERVER_HAVE_LIBPNG) |
| 2856 | } else if (cl->preferredEncoding == rfbEncodingTightPng) { |
| 2857 | nUpdateRegionRects = 0; |
| 2858 | |
| 2859 | for(i = sraRgnGetIterator(updateRegion); sraRgnIteratorNext(i,&rect);){ |
| 2860 | int x = rect.x1; |
| 2861 | int y = rect.y1; |
| 2862 | int w = rect.x2 - x; |
| 2863 | int h = rect.y2 - y; |
| 2864 | int n; |
| 2865 | /* We need to count the number of rects in the scaled screen */ |
| 2866 | if (cl->screen!=cl->scaledScreen) |
| 2867 | rfbScaledCorrection(cl->screen, cl->scaledScreen, &x, &y, &w, &h, "rfbSendFramebufferUpdate"); |
| 2868 | n = rfbNumCodedRectsTight(cl, x, y, w, h); |
| 2869 | if (n == 0) { |
| 2870 | nUpdateRegionRects = 0xFFFF; |
| 2871 | break; |
| 2872 | } |
| 2873 | nUpdateRegionRects += n; |
| 2874 | } |
| 2875 | sraRgnReleaseIterator(i); i=NULL; |
| 2876 | #endif |
| 2877 | } else { |
| 2878 | nUpdateRegionRects = sraRgnCountRects(updateRegion); |
| 2879 | } |
| 2880 | |
| 2881 | fu->type = rfbFramebufferUpdate; |
| 2882 | if (nUpdateRegionRects != 0xFFFF) { |
| 2883 | if(cl->screen->maxRectsPerUpdate>0 |
| 2884 | /* CoRRE splits the screen into smaller squares */ |
| 2885 | && cl->preferredEncoding != rfbEncodingCoRRE |
| 2886 | /* Ultra encoding splits rectangles up into smaller chunks */ |
| 2887 | && cl->preferredEncoding != rfbEncodingUltra |
| 2888 | #ifdef LIBVNCSERVER_HAVE_LIBZ |
| 2889 | /* Zlib encoding splits rectangles up into smaller chunks */ |
| 2890 | && cl->preferredEncoding != rfbEncodingZlib |
| 2891 | #ifdef LIBVNCSERVER_HAVE_LIBJPEG |
| 2892 | /* Tight encoding counts the rectangles differently */ |
| 2893 | && cl->preferredEncoding != rfbEncodingTight |
| 2894 | #endif |
| 2895 | #endif |
| 2896 | #ifdef LIBVNCSERVER_HAVE_LIBPNG |
| 2897 | /* Tight encoding counts the rectangles differently */ |
| 2898 | && cl->preferredEncoding != rfbEncodingTightPng |
| 2899 | #endif |
| 2900 | && nUpdateRegionRects>cl->screen->maxRectsPerUpdate) { |
| 2901 | sraRegion* newUpdateRegion = sraRgnBBox(updateRegion); |
| 2902 | sraRgnDestroy(updateRegion); |
| 2903 | updateRegion = newUpdateRegion; |
| 2904 | nUpdateRegionRects = sraRgnCountRects(updateRegion); |
| 2905 | } |
| 2906 | fu->nRects = Swap16IfLE((uint16_t)(sraRgnCountRects(updateCopyRegion) + |
| 2907 | nUpdateRegionRects + |
| 2908 | !!sendCursorShape + !!sendCursorPos + !!sendKeyboardLedState + |
| 2909 | !!sendSupportedMessages + !!sendSupportedEncodings + !!sendServerIdentity)); |
| 2910 | } else { |
| 2911 | fu->nRects = 0xFFFF; |
| 2912 | } |
| 2913 | cl->ublen = sz_rfbFramebufferUpdateMsg; |
| 2914 | |
| 2915 | if (sendCursorShape) { |
| 2916 | cl->cursorWasChanged = FALSE; |
| 2917 | if (!rfbSendCursorShape(cl)) |
| 2918 | goto updateFailed; |
| 2919 | } |
| 2920 | |
| 2921 | if (sendCursorPos) { |
| 2922 | cl->cursorWasMoved = FALSE; |
| 2923 | if (!rfbSendCursorPos(cl)) |
| 2924 | goto updateFailed; |
| 2925 | } |
| 2926 | |
| 2927 | if (sendKeyboardLedState) { |
| 2928 | if (!rfbSendKeyboardLedState(cl)) |
| 2929 | goto updateFailed; |
| 2930 | } |
| 2931 | |
| 2932 | if (sendSupportedMessages) { |
| 2933 | if (!rfbSendSupportedMessages(cl)) |
| 2934 | goto updateFailed; |
| 2935 | } |
| 2936 | if (sendSupportedEncodings) { |
| 2937 | if (!rfbSendSupportedEncodings(cl)) |
| 2938 | goto updateFailed; |
| 2939 | } |
| 2940 | if (sendServerIdentity) { |
| 2941 | if (!rfbSendServerIdentity(cl)) |
| 2942 | goto updateFailed; |
| 2943 | } |
| 2944 | |
| 2945 | if (!sraRgnEmpty(updateCopyRegion)) { |
| 2946 | if (!rfbSendCopyRegion(cl,updateCopyRegion,dx,dy)) |
| 2947 | goto updateFailed; |
| 2948 | } |
| 2949 | |
| 2950 | for(i = sraRgnGetIterator(updateRegion); sraRgnIteratorNext(i,&rect);){ |
| 2951 | int x = rect.x1; |
| 2952 | int y = rect.y1; |
| 2953 | int w = rect.x2 - x; |
| 2954 | int h = rect.y2 - y; |
| 2955 | |
| 2956 | /* We need to count the number of rects in the scaled screen */ |
| 2957 | if (cl->screen!=cl->scaledScreen) |
| 2958 | rfbScaledCorrection(cl->screen, cl->scaledScreen, &x, &y, &w, &h, "rfbSendFramebufferUpdate"); |
| 2959 | |
| 2960 | switch (cl->preferredEncoding) { |
| 2961 | case -1: |
| 2962 | case rfbEncodingRaw: |
| 2963 | if (!rfbSendRectEncodingRaw(cl, x, y, w, h)) |
| 2964 | goto updateFailed; |
| 2965 | break; |
| 2966 | case rfbEncodingRRE: |
| 2967 | if (!rfbSendRectEncodingRRE(cl, x, y, w, h)) |
| 2968 | goto updateFailed; |
| 2969 | break; |
| 2970 | case rfbEncodingCoRRE: |
| 2971 | if (!rfbSendRectEncodingCoRRE(cl, x, y, w, h)) |
| 2972 | goto updateFailed; |
| 2973 | break; |
| 2974 | case rfbEncodingHextile: |
| 2975 | if (!rfbSendRectEncodingHextile(cl, x, y, w, h)) |
| 2976 | goto updateFailed; |
| 2977 | break; |
| 2978 | case rfbEncodingUltra: |
| 2979 | if (!rfbSendRectEncodingUltra(cl, x, y, w, h)) |
| 2980 | goto updateFailed; |
| 2981 | break; |
| 2982 | #ifdef LIBVNCSERVER_HAVE_LIBZ |
| 2983 | case rfbEncodingZlib: |
| 2984 | if (!rfbSendRectEncodingZlib(cl, x, y, w, h)) |
| 2985 | goto updateFailed; |
| 2986 | break; |
| 2987 | case rfbEncodingZRLE: |
| 2988 | case rfbEncodingZYWRLE: |
| 2989 | if (!rfbSendRectEncodingZRLE(cl, x, y, w, h)) |
| 2990 | goto updateFailed; |
| 2991 | break; |
| 2992 | #endif |
| 2993 | #if defined(LIBVNCSERVER_HAVE_LIBJPEG) && (defined(LIBVNCSERVER_HAVE_LIBZ) || defined(LIBVNCSERVER_HAVE_LIBPNG)) |
| 2994 | case rfbEncodingTight: |
| 2995 | if (!rfbSendRectEncodingTight(cl, x, y, w, h)) |
| 2996 | goto updateFailed; |
| 2997 | break; |
| 2998 | #ifdef LIBVNCSERVER_HAVE_LIBPNG |
| 2999 | case rfbEncodingTightPng: |
| 3000 | if (!rfbSendRectEncodingTightPng(cl, x, y, w, h)) |
| 3001 | goto updateFailed; |
| 3002 | break; |
| 3003 | #endif |
| 3004 | #endif |
| 3005 | } |
| 3006 | } |
| 3007 | if (i) { |
| 3008 | sraRgnReleaseIterator(i); |
| 3009 | i = NULL; |
| 3010 | } |
| 3011 | |
| 3012 | if ( nUpdateRegionRects == 0xFFFF && |
| 3013 | !rfbSendLastRectMarker(cl) ) |
| 3014 | goto updateFailed; |
| 3015 | |
| 3016 | if (!rfbSendUpdateBuf(cl)) { |
| 3017 | updateFailed: |
| 3018 | result = FALSE; |
| 3019 | } |
| 3020 | |
| 3021 | if (!cl->enableCursorShapeUpdates) { |
| 3022 | rfbHideCursor(cl); |
| 3023 | } |
| 3024 | |
| 3025 | if(i) |
| 3026 | sraRgnReleaseIterator(i); |
| 3027 | sraRgnDestroy(updateRegion); |
| 3028 | sraRgnDestroy(updateCopyRegion); |
| 3029 | |
| 3030 | if(cl->screen->displayFinishedHook) |
| 3031 | cl->screen->displayFinishedHook(cl, result); |
| 3032 | return result; |
| 3033 | } |
| 3034 | |
| 3035 | |
| 3036 | /* |
| 3037 | * Send the copy region as a string of CopyRect encoded rectangles. |
| 3038 | * The only slightly tricky thing is that we should send the messages in |
| 3039 | * the correct order so that an earlier CopyRect will not corrupt the source |
| 3040 | * of a later one. |
| 3041 | */ |
| 3042 | |
| 3043 | rfbBool |
| 3044 | rfbSendCopyRegion(rfbClientPtr cl, |
| 3045 | sraRegionPtr reg, |
| 3046 | int dx, |
| 3047 | int dy) |
| 3048 | { |
| 3049 | int x, y, w, h; |
| 3050 | rfbFramebufferUpdateRectHeader rect; |
| 3051 | rfbCopyRect cr; |
| 3052 | sraRectangleIterator* i; |
| 3053 | sraRect rect1; |
| 3054 | |
| 3055 | /* printf("copyrect: "); sraRgnPrint(reg); putchar('\n');fflush(stdout); */ |
| 3056 | i = sraRgnGetReverseIterator(reg,dx>0,dy>0); |
| 3057 | |
| 3058 | /* correct for the scale of the screen */ |
| 3059 | dx = ScaleX(cl->screen, cl->scaledScreen, dx); |
| 3060 | dy = ScaleX(cl->screen, cl->scaledScreen, dy); |
| 3061 | |
| 3062 | while(sraRgnIteratorNext(i,&rect1)) { |
| 3063 | x = rect1.x1; |
| 3064 | y = rect1.y1; |
| 3065 | w = rect1.x2 - x; |
| 3066 | h = rect1.y2 - y; |
| 3067 | |
| 3068 | /* correct for scaling (if necessary) */ |
| 3069 | rfbScaledCorrection(cl->screen, cl->scaledScreen, &x, &y, &w, &h, "copyrect"); |
| 3070 | |
| 3071 | rect.r.x = Swap16IfLE(x); |
| 3072 | rect.r.y = Swap16IfLE(y); |
| 3073 | rect.r.w = Swap16IfLE(w); |
| 3074 | rect.r.h = Swap16IfLE(h); |
| 3075 | rect.encoding = Swap32IfLE(rfbEncodingCopyRect); |
| 3076 | |
| 3077 | memcpy(&cl->updateBuf[cl->ublen], (char *)&rect, |
| 3078 | sz_rfbFramebufferUpdateRectHeader); |
| 3079 | cl->ublen += sz_rfbFramebufferUpdateRectHeader; |
| 3080 | |
| 3081 | cr.srcX = Swap16IfLE(x - dx); |
| 3082 | cr.srcY = Swap16IfLE(y - dy); |
| 3083 | |
| 3084 | memcpy(&cl->updateBuf[cl->ublen], (char *)&cr, sz_rfbCopyRect); |
| 3085 | cl->ublen += sz_rfbCopyRect; |
| 3086 | |
| 3087 | rfbStatRecordEncodingSent(cl, rfbEncodingCopyRect, sz_rfbFramebufferUpdateRectHeader + sz_rfbCopyRect, |
| 3088 | w * h * (cl->scaledScreen->bitsPerPixel / 8)); |
| 3089 | } |
| 3090 | sraRgnReleaseIterator(i); |
| 3091 | |
| 3092 | return TRUE; |
| 3093 | } |
| 3094 | |
| 3095 | /* |
| 3096 | * Send a given rectangle in raw encoding (rfbEncodingRaw). |
| 3097 | */ |
| 3098 | |
| 3099 | rfbBool |
| 3100 | rfbSendRectEncodingRaw(rfbClientPtr cl, |
| 3101 | int x, |
| 3102 | int y, |
| 3103 | int w, |
| 3104 | int h) |
| 3105 | { |
| 3106 | rfbFramebufferUpdateRectHeader rect; |
| 3107 | int nlines; |
| 3108 | int bytesPerLine = w * (cl->format.bitsPerPixel / 8); |
| 3109 | char *fbptr = (cl->scaledScreen->frameBuffer + (cl->scaledScreen->paddedWidthInBytes * y) |
| 3110 | + (x * (cl->scaledScreen->bitsPerPixel / 8))); |
| 3111 | |
| 3112 | /* Flush the buffer to guarantee correct alignment for translateFn(). */ |
| 3113 | if (cl->ublen > 0) { |
| 3114 | if (!rfbSendUpdateBuf(cl)) |
| 3115 | return FALSE; |
| 3116 | } |
| 3117 | |
| 3118 | rect.r.x = Swap16IfLE(x); |
| 3119 | rect.r.y = Swap16IfLE(y); |
| 3120 | rect.r.w = Swap16IfLE(w); |
| 3121 | rect.r.h = Swap16IfLE(h); |
| 3122 | rect.encoding = Swap32IfLE(rfbEncodingRaw); |
| 3123 | |
| 3124 | memcpy(&cl->updateBuf[cl->ublen], (char *)&rect,sz_rfbFramebufferUpdateRectHeader); |
| 3125 | cl->ublen += sz_rfbFramebufferUpdateRectHeader; |
| 3126 | |
| 3127 | |
| 3128 | rfbStatRecordEncodingSent(cl, rfbEncodingRaw, sz_rfbFramebufferUpdateRectHeader + bytesPerLine * h, |
| 3129 | sz_rfbFramebufferUpdateRectHeader + bytesPerLine * h); |
| 3130 | |
| 3131 | nlines = (UPDATE_BUF_SIZE - cl->ublen) / bytesPerLine; |
| 3132 | |
| 3133 | while (TRUE) { |
| 3134 | if (nlines > h) |
| 3135 | nlines = h; |
| 3136 | |
| 3137 | (*cl->translateFn)(cl->translateLookupTable, |
| 3138 | &(cl->screen->serverFormat), |
| 3139 | &cl->format, fbptr, &cl->updateBuf[cl->ublen], |
| 3140 | cl->scaledScreen->paddedWidthInBytes, w, nlines); |
| 3141 | |
| 3142 | cl->ublen += nlines * bytesPerLine; |
| 3143 | h -= nlines; |
| 3144 | |
| 3145 | if (h == 0) /* rect fitted in buffer, do next one */ |
| 3146 | return TRUE; |
| 3147 | |
| 3148 | /* buffer full - flush partial rect and do another nlines */ |
| 3149 | |
| 3150 | if (!rfbSendUpdateBuf(cl)) |
| 3151 | return FALSE; |
| 3152 | |
| 3153 | fbptr += (cl->scaledScreen->paddedWidthInBytes * nlines); |
| 3154 | |
| 3155 | nlines = (UPDATE_BUF_SIZE - cl->ublen) / bytesPerLine; |
| 3156 | if (nlines == 0) { |
| 3157 | rfbErr("rfbSendRectEncodingRaw: send buffer too small for %d " |
| 3158 | "bytes per line\n", bytesPerLine); |
| 3159 | rfbCloseClient(cl); |
| 3160 | return FALSE; |
| 3161 | } |
| 3162 | } |
| 3163 | } |
| 3164 | |
| 3165 | |
| 3166 | |
| 3167 | /* |
| 3168 | * Send an empty rectangle with encoding field set to value of |
| 3169 | * rfbEncodingLastRect to notify client that this is the last |
| 3170 | * rectangle in framebuffer update ("LastRect" extension of RFB |
| 3171 | * protocol). |
| 3172 | */ |
| 3173 | |
| 3174 | rfbBool |
| 3175 | rfbSendLastRectMarker(rfbClientPtr cl) |
| 3176 | { |
| 3177 | rfbFramebufferUpdateRectHeader rect; |
| 3178 | |
| 3179 | if (cl->ublen + sz_rfbFramebufferUpdateRectHeader > UPDATE_BUF_SIZE) { |
| 3180 | if (!rfbSendUpdateBuf(cl)) |
| 3181 | return FALSE; |
| 3182 | } |
| 3183 | |
| 3184 | rect.encoding = Swap32IfLE(rfbEncodingLastRect); |
| 3185 | rect.r.x = 0; |
| 3186 | rect.r.y = 0; |
| 3187 | rect.r.w = 0; |
| 3188 | rect.r.h = 0; |
| 3189 | |
| 3190 | memcpy(&cl->updateBuf[cl->ublen], (char *)&rect,sz_rfbFramebufferUpdateRectHeader); |
| 3191 | cl->ublen += sz_rfbFramebufferUpdateRectHeader; |
| 3192 | |
| 3193 | |
| 3194 | rfbStatRecordEncodingSent(cl, rfbEncodingLastRect, sz_rfbFramebufferUpdateRectHeader, sz_rfbFramebufferUpdateRectHeader); |
| 3195 | |
| 3196 | return TRUE; |
| 3197 | } |
| 3198 | |
| 3199 | |
| 3200 | /* |
| 3201 | * Send NewFBSize pseudo-rectangle. This tells the client to change |
| 3202 | * its framebuffer size. |
| 3203 | */ |
| 3204 | |
| 3205 | rfbBool |
| 3206 | rfbSendNewFBSize(rfbClientPtr cl, |
| 3207 | int w, |
| 3208 | int h) |
| 3209 | { |
| 3210 | rfbFramebufferUpdateRectHeader rect; |
| 3211 | |
| 3212 | if (cl->ublen + sz_rfbFramebufferUpdateRectHeader > UPDATE_BUF_SIZE) { |
| 3213 | if (!rfbSendUpdateBuf(cl)) |
| 3214 | return FALSE; |
| 3215 | } |
| 3216 | |
| 3217 | if (cl->PalmVNC==TRUE) |
| 3218 | rfbLog("Sending rfbEncodingNewFBSize in response to a PalmVNC style framebuffer resize (%dx%d)\n", w, h); |
| 3219 | else |
| 3220 | rfbLog("Sending rfbEncodingNewFBSize for resize to (%dx%d)\n", w, h); |
| 3221 | |
| 3222 | rect.encoding = Swap32IfLE(rfbEncodingNewFBSize); |
| 3223 | rect.r.x = 0; |
| 3224 | rect.r.y = 0; |
| 3225 | rect.r.w = Swap16IfLE(w); |
| 3226 | rect.r.h = Swap16IfLE(h); |
| 3227 | |
| 3228 | memcpy(&cl->updateBuf[cl->ublen], (char *)&rect, |
| 3229 | sz_rfbFramebufferUpdateRectHeader); |
| 3230 | cl->ublen += sz_rfbFramebufferUpdateRectHeader; |
| 3231 | |
| 3232 | rfbStatRecordEncodingSent(cl, rfbEncodingNewFBSize, sz_rfbFramebufferUpdateRectHeader, sz_rfbFramebufferUpdateRectHeader); |
| 3233 | |
| 3234 | return TRUE; |
| 3235 | } |
| 3236 | |
| 3237 | |
| 3238 | /* |
| 3239 | * Send the contents of cl->updateBuf. Returns 1 if successful, -1 if |
| 3240 | * not (errno should be set). |
| 3241 | */ |
| 3242 | |
| 3243 | rfbBool |
| 3244 | rfbSendUpdateBuf(rfbClientPtr cl) |
| 3245 | { |
| 3246 | if(cl->sock<0) |
| 3247 | return FALSE; |
| 3248 | |
| 3249 | if (rfbWriteExact(cl, cl->updateBuf, cl->ublen) < 0) { |
| 3250 | rfbLogPerror("rfbSendUpdateBuf: write"); |
| 3251 | rfbCloseClient(cl); |
| 3252 | return FALSE; |
| 3253 | } |
| 3254 | |
| 3255 | cl->ublen = 0; |
| 3256 | return TRUE; |
| 3257 | } |
| 3258 | |
| 3259 | /* |
| 3260 | * rfbSendSetColourMapEntries sends a SetColourMapEntries message to the |
| 3261 | * client, using values from the currently installed colormap. |
| 3262 | */ |
| 3263 | |
| 3264 | rfbBool |
| 3265 | rfbSendSetColourMapEntries(rfbClientPtr cl, |
| 3266 | int firstColour, |
| 3267 | int nColours) |
| 3268 | { |
| 3269 | char buf[sz_rfbSetColourMapEntriesMsg + 256 * 3 * 2]; |
| 3270 | char *wbuf = buf; |
| 3271 | rfbSetColourMapEntriesMsg *scme; |
| 3272 | uint16_t *rgb; |
| 3273 | rfbColourMap* cm = &cl->screen->colourMap; |
| 3274 | int i, len; |
| 3275 | |
| 3276 | if (nColours > 256) { |
| 3277 | /* some rare hardware has, e.g., 4096 colors cells: PseudoColor:12 */ |
| 3278 | wbuf = (char *) malloc(sz_rfbSetColourMapEntriesMsg + nColours * 3 * 2); |
| 3279 | } |
| 3280 | |
| 3281 | scme = (rfbSetColourMapEntriesMsg *)wbuf; |
| 3282 | rgb = (uint16_t *)(&wbuf[sz_rfbSetColourMapEntriesMsg]); |
| 3283 | |
| 3284 | scme->type = rfbSetColourMapEntries; |
| 3285 | |
| 3286 | scme->firstColour = Swap16IfLE(firstColour); |
| 3287 | scme->nColours = Swap16IfLE(nColours); |
| 3288 | |
| 3289 | len = sz_rfbSetColourMapEntriesMsg; |
| 3290 | |
| 3291 | for (i = 0; i < nColours; i++) { |
| 3292 | if(i<(int)cm->count) { |
| 3293 | if(cm->is16) { |
| 3294 | rgb[i*3] = Swap16IfLE(cm->data.shorts[i*3]); |
| 3295 | rgb[i*3+1] = Swap16IfLE(cm->data.shorts[i*3+1]); |
| 3296 | rgb[i*3+2] = Swap16IfLE(cm->data.shorts[i*3+2]); |
| 3297 | } else { |
| 3298 | rgb[i*3] = Swap16IfLE((unsigned short)cm->data.bytes[i*3]); |
| 3299 | rgb[i*3+1] = Swap16IfLE((unsigned short)cm->data.bytes[i*3+1]); |
| 3300 | rgb[i*3+2] = Swap16IfLE((unsigned short)cm->data.bytes[i*3+2]); |
| 3301 | } |
| 3302 | } |
| 3303 | } |
| 3304 | |
| 3305 | len += nColours * 3 * 2; |
| 3306 | |
| 3307 | LOCK(cl->sendMutex); |
| 3308 | if (rfbWriteExact(cl, wbuf, len) < 0) { |
| 3309 | rfbLogPerror("rfbSendSetColourMapEntries: write"); |
| 3310 | rfbCloseClient(cl); |
| 3311 | if (wbuf != buf) free(wbuf); |
| 3312 | UNLOCK(cl->sendMutex); |
| 3313 | return FALSE; |
| 3314 | } |
| 3315 | UNLOCK(cl->sendMutex); |
| 3316 | |
| 3317 | rfbStatRecordMessageSent(cl, rfbSetColourMapEntries, len, len); |
| 3318 | if (wbuf != buf) free(wbuf); |
| 3319 | return TRUE; |
| 3320 | } |
| 3321 | |
| 3322 | /* |
| 3323 | * rfbSendBell sends a Bell message to all the clients. |
| 3324 | */ |
| 3325 | |
| 3326 | void |
| 3327 | rfbSendBell(rfbScreenInfoPtr rfbScreen) |
| 3328 | { |
| 3329 | rfbClientIteratorPtr i; |
| 3330 | rfbClientPtr cl; |
| 3331 | rfbBellMsg b; |
| 3332 | |
| 3333 | i = rfbGetClientIterator(rfbScreen); |
| 3334 | while((cl=rfbClientIteratorNext(i))) { |
| 3335 | b.type = rfbBell; |
| 3336 | LOCK(cl->sendMutex); |
| 3337 | if (rfbWriteExact(cl, (char *)&b, sz_rfbBellMsg) < 0) { |
| 3338 | rfbLogPerror("rfbSendBell: write"); |
| 3339 | rfbCloseClient(cl); |
| 3340 | } |
| 3341 | UNLOCK(cl->sendMutex); |
| 3342 | } |
| 3343 | rfbStatRecordMessageSent(cl, rfbBell, sz_rfbBellMsg, sz_rfbBellMsg); |
| 3344 | rfbReleaseClientIterator(i); |
| 3345 | } |
| 3346 | |
| 3347 | |
| 3348 | /* |
| 3349 | * rfbSendServerCutText sends a ServerCutText message to all the clients. |
| 3350 | */ |
| 3351 | |
| 3352 | void |
| 3353 | rfbSendServerCutText(rfbScreenInfoPtr rfbScreen,char *str, int len) |
| 3354 | { |
| 3355 | rfbClientPtr cl; |
| 3356 | rfbServerCutTextMsg sct; |
| 3357 | rfbClientIteratorPtr iterator; |
| 3358 | |
| 3359 | iterator = rfbGetClientIterator(rfbScreen); |
| 3360 | while ((cl = rfbClientIteratorNext(iterator)) != NULL) { |
| 3361 | sct.type = rfbServerCutText; |
| 3362 | sct.length = Swap32IfLE(len); |
| 3363 | LOCK(cl->sendMutex); |
| 3364 | if (rfbWriteExact(cl, (char *)&sct, |
| 3365 | sz_rfbServerCutTextMsg) < 0) { |
| 3366 | rfbLogPerror("rfbSendServerCutText: write"); |
| 3367 | rfbCloseClient(cl); |
| 3368 | UNLOCK(cl->sendMutex); |
| 3369 | continue; |
| 3370 | } |
| 3371 | if (rfbWriteExact(cl, str, len) < 0) { |
| 3372 | rfbLogPerror("rfbSendServerCutText: write"); |
| 3373 | rfbCloseClient(cl); |
| 3374 | } |
| 3375 | UNLOCK(cl->sendMutex); |
| 3376 | rfbStatRecordMessageSent(cl, rfbServerCutText, sz_rfbServerCutTextMsg+len, sz_rfbServerCutTextMsg+len); |
| 3377 | } |
| 3378 | rfbReleaseClientIterator(iterator); |
| 3379 | } |
| 3380 | |
| 3381 | /***************************************************************************** |
| 3382 | * |
| 3383 | * UDP can be used for keyboard and pointer events when the underlying |
| 3384 | * network is highly reliable. This is really here to support ORL's |
| 3385 | * videotile, whose TCP implementation doesn't like sending lots of small |
| 3386 | * packets (such as 100s of pen readings per second!). |
| 3387 | */ |
| 3388 | |
| 3389 | static unsigned char ptrAcceleration = 50; |
| 3390 | |
| 3391 | void |
| 3392 | rfbNewUDPConnection(rfbScreenInfoPtr rfbScreen, |
| 3393 | int sock) |
| 3394 | { |
| 3395 | if (write(sock, (char*) &ptrAcceleration, 1) < 0) { |
| 3396 | rfbLogPerror("rfbNewUDPConnection: write"); |
| 3397 | } |
| 3398 | } |
| 3399 | |
| 3400 | /* |
| 3401 | * Because UDP is a message based service, we can't read the first byte and |
| 3402 | * then the rest of the packet separately like we do with TCP. We will always |
| 3403 | * get a whole packet delivered in one go, so we ask read() for the maximum |
| 3404 | * number of bytes we can possibly get. |
| 3405 | */ |
| 3406 | |
| 3407 | void |
| 3408 | rfbProcessUDPInput(rfbScreenInfoPtr rfbScreen) |
| 3409 | { |
| 3410 | int n; |
| 3411 | rfbClientPtr cl=rfbScreen->udpClient; |
| 3412 | rfbClientToServerMsg msg; |
| 3413 | |
| 3414 | if((!cl) || cl->onHold) |
| 3415 | return; |
| 3416 | |
| 3417 | if ((n = read(rfbScreen->udpSock, (char *)&msg, sizeof(msg))) <= 0) { |
| 3418 | if (n < 0) { |
| 3419 | rfbLogPerror("rfbProcessUDPInput: read"); |
| 3420 | } |
| 3421 | rfbDisconnectUDPSock(rfbScreen); |
| 3422 | return; |
| 3423 | } |
| 3424 | |
| 3425 | switch (msg.type) { |
| 3426 | |
| 3427 | case rfbKeyEvent: |
| 3428 | if (n != sz_rfbKeyEventMsg) { |
| 3429 | rfbErr("rfbProcessUDPInput: key event incorrect length\n"); |
| 3430 | rfbDisconnectUDPSock(rfbScreen); |
| 3431 | return; |
| 3432 | } |
| 3433 | cl->screen->kbdAddEvent(msg.ke.down, (rfbKeySym)Swap32IfLE(msg.ke.key), cl); |
| 3434 | break; |
| 3435 | |
| 3436 | case rfbPointerEvent: |
| 3437 | if (n != sz_rfbPointerEventMsg) { |
| 3438 | rfbErr("rfbProcessUDPInput: ptr event incorrect length\n"); |
| 3439 | rfbDisconnectUDPSock(rfbScreen); |
| 3440 | return; |
| 3441 | } |
| 3442 | cl->screen->ptrAddEvent(msg.pe.buttonMask, |
| 3443 | Swap16IfLE(msg.pe.x), Swap16IfLE(msg.pe.y), cl); |
| 3444 | break; |
| 3445 | |
| 3446 | default: |
| 3447 | rfbErr("rfbProcessUDPInput: unknown message type %d\n", |
| 3448 | msg.type); |
| 3449 | rfbDisconnectUDPSock(rfbScreen); |
| 3450 | } |
| 3451 | } |
| 3452 | |
| 3453 | |