San Mehat | a430b2b | 2014-09-23 08:30:51 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved. |
| 3 | * |
| 4 | * This is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This software is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this software; if not, write to the Free Software |
| 16 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
| 17 | * USA. |
| 18 | */ |
| 19 | |
| 20 | /* |
| 21 | * vncviewer.c - the Xt-based VNC viewer. |
| 22 | */ |
| 23 | |
| 24 | #ifdef __STRICT_ANSI__ |
| 25 | #define _BSD_SOURCE |
| 26 | #define _POSIX_SOURCE |
| 27 | #endif |
| 28 | #include <stdio.h> |
| 29 | #include <stdlib.h> |
| 30 | #include <string.h> |
| 31 | #include <time.h> |
| 32 | #include <rfb/rfbclient.h> |
| 33 | #include "tls.h" |
| 34 | |
| 35 | static void Dummy(rfbClient* client) { |
| 36 | } |
| 37 | static rfbBool DummyPoint(rfbClient* client, int x, int y) { |
| 38 | return TRUE; |
| 39 | } |
| 40 | static void DummyRect(rfbClient* client, int x, int y, int w, int h) { |
| 41 | } |
| 42 | |
| 43 | #ifdef __MINGW32__ |
| 44 | static char* NoPassword(rfbClient* client) { |
| 45 | return strdup(""); |
| 46 | } |
| 47 | #undef SOCKET |
| 48 | #include <winsock2.h> |
| 49 | #define close closesocket |
| 50 | #else |
| 51 | #include <stdio.h> |
| 52 | #include <termios.h> |
| 53 | #endif |
| 54 | |
| 55 | static char* ReadPassword(rfbClient* client) { |
| 56 | #ifdef __MINGW32__ |
| 57 | /* FIXME */ |
| 58 | rfbClientErr("ReadPassword on MinGW32 NOT IMPLEMENTED\n"); |
| 59 | return NoPassword(client); |
| 60 | #else |
| 61 | int i; |
| 62 | char* p=malloc(9); |
| 63 | struct termios save,noecho; |
| 64 | p[0]=0; |
| 65 | if(tcgetattr(fileno(stdin),&save)!=0) return p; |
| 66 | noecho=save; noecho.c_lflag &= ~ECHO; |
| 67 | if(tcsetattr(fileno(stdin),TCSAFLUSH,&noecho)!=0) return p; |
| 68 | fprintf(stderr,"Password: "); |
| 69 | i=0; |
| 70 | while(1) { |
| 71 | int c=fgetc(stdin); |
| 72 | if(c=='\n') |
| 73 | break; |
| 74 | if(i<8) { |
| 75 | p[i]=c; |
| 76 | i++; |
| 77 | p[i]=0; |
| 78 | } |
| 79 | } |
| 80 | tcsetattr(fileno(stdin),TCSAFLUSH,&save); |
| 81 | return p; |
| 82 | #endif |
| 83 | } |
| 84 | static rfbBool MallocFrameBuffer(rfbClient* client) { |
| 85 | if(client->frameBuffer) |
| 86 | free(client->frameBuffer); |
| 87 | client->frameBuffer=malloc(client->width*client->height*client->format.bitsPerPixel/8); |
| 88 | return client->frameBuffer?TRUE:FALSE; |
| 89 | } |
| 90 | |
| 91 | static void initAppData(AppData* data) { |
| 92 | data->shareDesktop=TRUE; |
| 93 | data->viewOnly=FALSE; |
| 94 | data->encodingsString="tight zrle ultra copyrect hextile zlib corre rre raw"; |
| 95 | data->useBGR233=FALSE; |
| 96 | data->nColours=0; |
| 97 | data->forceOwnCmap=FALSE; |
| 98 | data->forceTrueColour=FALSE; |
| 99 | data->requestedDepth=0; |
| 100 | data->compressLevel=3; |
| 101 | data->qualityLevel=5; |
| 102 | #ifdef LIBVNCSERVER_HAVE_LIBJPEG |
| 103 | data->enableJPEG=TRUE; |
| 104 | #else |
| 105 | data->enableJPEG=FALSE; |
| 106 | #endif |
| 107 | data->useRemoteCursor=FALSE; |
| 108 | } |
| 109 | |
| 110 | rfbClient* rfbGetClient(int bitsPerSample,int samplesPerPixel, |
| 111 | int bytesPerPixel) { |
| 112 | rfbClient* client=(rfbClient*)calloc(sizeof(rfbClient),1); |
| 113 | if(!client) { |
| 114 | rfbClientErr("Couldn't allocate client structure!\n"); |
| 115 | return NULL; |
| 116 | } |
| 117 | initAppData(&client->appData); |
| 118 | client->endianTest = 1; |
| 119 | client->programName=""; |
| 120 | client->serverHost=strdup(""); |
| 121 | client->serverPort=5900; |
| 122 | |
| 123 | client->destHost = NULL; |
| 124 | client->destPort = 5900; |
| 125 | |
| 126 | client->CurrentKeyboardLedState = 0; |
| 127 | client->HandleKeyboardLedState = (HandleKeyboardLedStateProc)DummyPoint; |
| 128 | |
| 129 | /* default: use complete frame buffer */ |
| 130 | client->updateRect.x = -1; |
| 131 | |
| 132 | client->format.bitsPerPixel = bytesPerPixel*8; |
| 133 | client->format.depth = bitsPerSample*samplesPerPixel; |
| 134 | client->appData.requestedDepth=client->format.depth; |
| 135 | client->format.bigEndian = *(char *)&client->endianTest?FALSE:TRUE; |
| 136 | client->format.trueColour = TRUE; |
| 137 | |
| 138 | if (client->format.bitsPerPixel == 8) { |
| 139 | client->format.redMax = 7; |
| 140 | client->format.greenMax = 7; |
| 141 | client->format.blueMax = 3; |
| 142 | client->format.redShift = 0; |
| 143 | client->format.greenShift = 3; |
| 144 | client->format.blueShift = 6; |
| 145 | } else { |
| 146 | client->format.redMax = (1 << bitsPerSample) - 1; |
| 147 | client->format.greenMax = (1 << bitsPerSample) - 1; |
| 148 | client->format.blueMax = (1 << bitsPerSample) - 1; |
| 149 | if(!client->format.bigEndian) { |
| 150 | client->format.redShift = 0; |
| 151 | client->format.greenShift = bitsPerSample; |
| 152 | client->format.blueShift = bitsPerSample * 2; |
| 153 | } else { |
| 154 | if(client->format.bitsPerPixel==8*3) { |
| 155 | client->format.redShift = bitsPerSample*2; |
| 156 | client->format.greenShift = bitsPerSample*1; |
| 157 | client->format.blueShift = 0; |
| 158 | } else { |
| 159 | client->format.redShift = bitsPerSample*3; |
| 160 | client->format.greenShift = bitsPerSample*2; |
| 161 | client->format.blueShift = bitsPerSample; |
| 162 | } |
| 163 | } |
| 164 | } |
| 165 | |
| 166 | client->bufoutptr=client->buf; |
| 167 | client->buffered=0; |
| 168 | |
| 169 | #ifdef LIBVNCSERVER_HAVE_LIBZ |
| 170 | client->raw_buffer_size = -1; |
| 171 | client->decompStreamInited = FALSE; |
| 172 | |
| 173 | #ifdef LIBVNCSERVER_HAVE_LIBJPEG |
| 174 | memset(client->zlibStreamActive,0,sizeof(rfbBool)*4); |
| 175 | client->jpegSrcManager = NULL; |
| 176 | #endif |
| 177 | #endif |
| 178 | |
| 179 | client->HandleCursorPos = DummyPoint; |
| 180 | client->SoftCursorLockArea = DummyRect; |
| 181 | client->SoftCursorUnlockScreen = Dummy; |
| 182 | client->GotFrameBufferUpdate = DummyRect; |
| 183 | client->FinishedFrameBufferUpdate = NULL; |
| 184 | client->GetPassword = ReadPassword; |
| 185 | client->MallocFrameBuffer = MallocFrameBuffer; |
| 186 | client->Bell = Dummy; |
| 187 | client->CurrentKeyboardLedState = 0; |
| 188 | client->HandleKeyboardLedState = (HandleKeyboardLedStateProc)DummyPoint; |
| 189 | client->QoS_DSCP = 0; |
| 190 | |
| 191 | client->authScheme = 0; |
| 192 | client->subAuthScheme = 0; |
| 193 | client->GetCredential = NULL; |
| 194 | client->tlsSession = NULL; |
| 195 | client->sock = -1; |
| 196 | client->listenSock = -1; |
| 197 | client->listenAddress = NULL; |
| 198 | client->listen6Sock = -1; |
| 199 | client->listen6Address = NULL; |
| 200 | client->clientAuthSchemes = NULL; |
| 201 | return client; |
| 202 | } |
| 203 | |
| 204 | static rfbBool rfbInitConnection(rfbClient* client) |
| 205 | { |
| 206 | /* Unless we accepted an incoming connection, make a TCP connection to the |
| 207 | given VNC server */ |
| 208 | |
| 209 | if (!client->listenSpecified) { |
| 210 | if (!client->serverHost) |
| 211 | return FALSE; |
| 212 | if (client->destHost) { |
| 213 | if (!ConnectToRFBRepeater(client,client->serverHost,client->serverPort,client->destHost,client->destPort)) |
| 214 | return FALSE; |
| 215 | } else { |
| 216 | if (!ConnectToRFBServer(client,client->serverHost,client->serverPort)) |
| 217 | return FALSE; |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | /* Initialise the VNC connection, including reading the password */ |
| 222 | |
| 223 | if (!InitialiseRFBConnection(client)) |
| 224 | return FALSE; |
| 225 | |
| 226 | client->width=client->si.framebufferWidth; |
| 227 | client->height=client->si.framebufferHeight; |
| 228 | client->MallocFrameBuffer(client); |
| 229 | |
| 230 | if (!SetFormatAndEncodings(client)) |
| 231 | return FALSE; |
| 232 | |
| 233 | if (client->updateRect.x < 0) { |
| 234 | client->updateRect.x = client->updateRect.y = 0; |
| 235 | client->updateRect.w = client->width; |
| 236 | client->updateRect.h = client->height; |
| 237 | } |
| 238 | |
| 239 | if (client->appData.scaleSetting>1) |
| 240 | { |
| 241 | if (!SendScaleSetting(client, client->appData.scaleSetting)) |
| 242 | return FALSE; |
| 243 | if (!SendFramebufferUpdateRequest(client, |
| 244 | client->updateRect.x / client->appData.scaleSetting, |
| 245 | client->updateRect.y / client->appData.scaleSetting, |
| 246 | client->updateRect.w / client->appData.scaleSetting, |
| 247 | client->updateRect.h / client->appData.scaleSetting, |
| 248 | FALSE)) |
| 249 | return FALSE; |
| 250 | } |
| 251 | else |
| 252 | { |
| 253 | if (!SendFramebufferUpdateRequest(client, |
| 254 | client->updateRect.x, client->updateRect.y, |
| 255 | client->updateRect.w, client->updateRect.h, |
| 256 | FALSE)) |
| 257 | return FALSE; |
| 258 | } |
| 259 | |
| 260 | return TRUE; |
| 261 | } |
| 262 | |
| 263 | rfbBool rfbInitClient(rfbClient* client,int* argc,char** argv) { |
| 264 | int i,j; |
| 265 | |
| 266 | if(argv && argc && *argc) { |
| 267 | if(client->programName==0) |
| 268 | client->programName=argv[0]; |
| 269 | |
| 270 | for (i = 1; i < *argc; i++) { |
| 271 | j = i; |
| 272 | if (strcmp(argv[i], "-listen") == 0) { |
| 273 | listenForIncomingConnections(client); |
| 274 | break; |
| 275 | } else if (strcmp(argv[i], "-listennofork") == 0) { |
| 276 | listenForIncomingConnectionsNoFork(client, -1); |
| 277 | break; |
| 278 | } else if (strcmp(argv[i], "-play") == 0) { |
| 279 | client->serverPort = -1; |
| 280 | j++; |
| 281 | } else if (i+1<*argc && strcmp(argv[i], "-encodings") == 0) { |
| 282 | client->appData.encodingsString = argv[i+1]; |
| 283 | j+=2; |
| 284 | } else if (i+1<*argc && strcmp(argv[i], "-compress") == 0) { |
| 285 | client->appData.compressLevel = atoi(argv[i+1]); |
| 286 | j+=2; |
| 287 | } else if (i+1<*argc && strcmp(argv[i], "-quality") == 0) { |
| 288 | client->appData.qualityLevel = atoi(argv[i+1]); |
| 289 | j+=2; |
| 290 | } else if (i+1<*argc && strcmp(argv[i], "-scale") == 0) { |
| 291 | client->appData.scaleSetting = atoi(argv[i+1]); |
| 292 | j+=2; |
| 293 | } else if (i+1<*argc && strcmp(argv[i], "-qosdscp") == 0) { |
| 294 | client->QoS_DSCP = atoi(argv[i+1]); |
| 295 | j+=2; |
| 296 | } else if (i+1<*argc && strcmp(argv[i], "-repeaterdest") == 0) { |
| 297 | char* colon=strchr(argv[i+1],':'); |
| 298 | |
| 299 | if(client->destHost) |
| 300 | free(client->destHost); |
| 301 | client->destPort = 5900; |
| 302 | |
| 303 | client->destHost = strdup(argv[i+1]); |
| 304 | if(colon) { |
| 305 | client->destHost[(int)(colon-argv[i+1])] = '\0'; |
| 306 | client->destPort = atoi(colon+1); |
| 307 | } |
| 308 | j+=2; |
| 309 | } else { |
| 310 | char* colon=strchr(argv[i],':'); |
| 311 | |
| 312 | if(client->serverHost) |
| 313 | free(client->serverHost); |
| 314 | |
| 315 | if(colon) { |
| 316 | client->serverHost = strdup(argv[i]); |
| 317 | client->serverHost[(int)(colon-argv[i])] = '\0'; |
| 318 | client->serverPort = atoi(colon+1); |
| 319 | } else { |
| 320 | client->serverHost = strdup(argv[i]); |
| 321 | } |
| 322 | if(client->serverPort >= 0 && client->serverPort < 5900) |
| 323 | client->serverPort += 5900; |
| 324 | } |
| 325 | /* purge arguments */ |
| 326 | if (j>i) { |
| 327 | *argc-=j-i; |
| 328 | memmove(argv+i,argv+j,(*argc-i)*sizeof(char*)); |
| 329 | i--; |
| 330 | } |
| 331 | } |
| 332 | } |
| 333 | |
| 334 | if(!rfbInitConnection(client)) { |
| 335 | rfbClientCleanup(client); |
| 336 | return FALSE; |
| 337 | } |
| 338 | |
| 339 | return TRUE; |
| 340 | } |
| 341 | |
| 342 | void rfbClientCleanup(rfbClient* client) { |
| 343 | #ifdef LIBVNCSERVER_HAVE_LIBZ |
| 344 | #ifdef LIBVNCSERVER_HAVE_LIBJPEG |
| 345 | int i; |
| 346 | |
| 347 | for ( i = 0; i < 4; i++ ) { |
| 348 | if (client->zlibStreamActive[i] == TRUE ) { |
| 349 | if (inflateEnd (&client->zlibStream[i]) != Z_OK && |
| 350 | client->zlibStream[i].msg != NULL) |
| 351 | rfbClientLog("inflateEnd: %s\n", client->zlibStream[i].msg); |
| 352 | } |
| 353 | } |
| 354 | |
| 355 | if ( client->decompStreamInited == TRUE ) { |
| 356 | if (inflateEnd (&client->decompStream) != Z_OK && |
| 357 | client->decompStream.msg != NULL) |
| 358 | rfbClientLog("inflateEnd: %s\n", client->decompStream.msg ); |
| 359 | } |
| 360 | |
| 361 | if (client->jpegSrcManager) |
| 362 | free(client->jpegSrcManager); |
| 363 | #endif |
| 364 | #endif |
| 365 | |
| 366 | FreeTLS(client); |
| 367 | |
| 368 | if (client->sock >= 0) |
| 369 | close(client->sock); |
| 370 | if (client->listenSock >= 0) |
| 371 | close(client->listenSock); |
| 372 | free(client->desktopName); |
| 373 | free(client->serverHost); |
| 374 | if (client->destHost) |
| 375 | free(client->destHost); |
| 376 | if (client->clientAuthSchemes) |
| 377 | free(client->clientAuthSchemes); |
| 378 | free(client); |
| 379 | } |