summaryrefslogtreecommitdiffstats
path: root/libvncclient/vncviewer.c
blob: 6005b3ecac73b5416d5fccc36b10aaee97bfff2a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
/*
 *  Copyright (C) 1999 AT&T Laboratories Cambridge.  All Rights Reserved.
 *
 *  This is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This software is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this software; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
 *  USA.
 */

/*
 * vncviewer.c - the Xt-based VNC viewer.
 */

#ifdef __STRICT_ANSI__
#define _BSD_SOURCE
#define _POSIX_SOURCE
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <rfb/rfbclient.h>

static void Dummy(rfbClient* client) {
}
static rfbBool DummyPoint(rfbClient* client, int x, int y) {
  return TRUE;
}
static void DummyRect(rfbClient* client, int x, int y, int w, int h) {
}

#ifdef __MINGW32__
static char* NoPassword(rfbClient* client) {
  return strdup("");
}
#else
#include <stdio.h>
#include <termios.h>
#endif

static char* ReadPassword(rfbClient* client) {
#ifdef __MINGW32__
	/* FIXME */
	rfbClientErr("ReadPassword on MinGW32 NOT IMPLEMENTED\n");
	return NoPassword(client);
#else
	int i;
	char* p=malloc(9);
	struct termios save,noecho;
	p[0]=0;
	if(tcgetattr(fileno(stdin),&save)!=0) return p;
	noecho=save; noecho.c_lflag &= ~ECHO;
	if(tcsetattr(fileno(stdin),TCSAFLUSH,&noecho)!=0) return p;
	fprintf(stderr,"Password: ");
	i=0;
	while(1) {
		int c=fgetc(stdin);
		if(c=='\n')
			break;
		if(i<8) {
			p[i]=c;
			i++;
			p[i]=0;
		}
	}
	tcsetattr(fileno(stdin),TCSAFLUSH,&save);
	return p;
#endif
}
static rfbBool MallocFrameBuffer(rfbClient* client) {
  if(client->frameBuffer)
    free(client->frameBuffer);
  client->frameBuffer=malloc(client->width*client->height*client->format.bitsPerPixel/8);
  return client->frameBuffer?TRUE:FALSE;
}

static void initAppData(AppData* data) {
	data->shareDesktop=TRUE;
	data->viewOnly=FALSE;
	data->encodingsString="tight zrle hextile zlib corre rre raw";
	data->useBGR233=FALSE;
	data->nColours=0;
	data->forceOwnCmap=FALSE;
	data->forceTrueColour=FALSE;
	data->requestedDepth=0;
	data->compressLevel=3;
	data->qualityLevel=5;
#ifdef LIBVNCSERVER_HAVE_LIBJPEG
	data->enableJPEG=TRUE;
#else
	data->enableJPEG=FALSE;
#endif
	data->useRemoteCursor=FALSE;
}

rfbClient* rfbGetClient(int bitsPerSample,int samplesPerPixel,
			int bytesPerPixel) {
  rfbClient* client=(rfbClient*)calloc(sizeof(rfbClient),1);
  if(!client) {
    rfbClientErr("Couldn't allocate client structure!\n");
    return NULL;
  }
  initAppData(&client->appData);
  client->programName = NULL;
  client->endianTest = 1;
  client->programName="";
  client->serverHost="";
  client->serverPort=5900;
  
  client->CurrentKeyboardLedState = 0;
  client->HandleKeyboardLedState = (HandleKeyboardLedStateProc)DummyPoint;
  
  client->format.bitsPerPixel = bytesPerPixel*8;
  client->format.depth = bitsPerSample*samplesPerPixel;
  client->appData.requestedDepth=client->format.depth;
  client->format.bigEndian = *(char *)&client->endianTest?FALSE:TRUE;
  client->format.trueColour = TRUE;

  if (client->format.bitsPerPixel == 8) {
    client->format.redMax = 7;
    client->format.greenMax = 7;
    client->format.blueMax = 3;
    client->format.redShift = 0;
    client->format.greenShift = 3;
    client->format.blueShift = 6;
  } else {
    client->format.redMax = (1 << bitsPerSample) - 1;
    client->format.greenMax = (1 << bitsPerSample) - 1;
    client->format.blueMax = (1 << bitsPerSample) - 1;
    if(!client->format.bigEndian) {
      client->format.redShift = 0;
      client->format.greenShift = bitsPerSample;
      client->format.blueShift = bitsPerSample * 2;
    } else {
      if(client->format.bitsPerPixel==8*3) {
	client->format.redShift = bitsPerSample*2;
	client->format.greenShift = bitsPerSample*1;
	client->format.blueShift = 0;
      } else {
	client->format.redShift = bitsPerSample*3;
	client->format.greenShift = bitsPerSample*2;
	client->format.blueShift = bitsPerSample;
      }
    }
  }

  client->bufoutptr=client->buf;
  client->buffered=0;

#ifdef LIBVNCSERVER_HAVE_LIBZ
  client->raw_buffer_size = -1;
  client->decompStreamInited = FALSE;

#ifdef LIBVNCSERVER_HAVE_LIBJPEG
  memset(client->zlibStreamActive,0,sizeof(rfbBool)*4);
  client->jpegSrcManager = NULL;
#endif
#endif

  client->HandleCursorPos = DummyPoint;
  client->SoftCursorLockArea = DummyRect;
  client->SoftCursorUnlockScreen = Dummy;
  client->GotFrameBufferUpdate = DummyRect;
  client->GetPassword = ReadPassword;
  client->MallocFrameBuffer = MallocFrameBuffer;
  client->Bell = Dummy;
  client->CurrentKeyboardLedState = 0;
  client->HandleKeyboardLedState = (HandleKeyboardLedStateProc)DummyPoint;

  return client;
}

static rfbBool rfbInitConnection(rfbClient* client)
{
  /* Unless we accepted an incoming connection, make a TCP connection to the
     given VNC server */

  if (!client->listenSpecified) {
    if (!client->serverHost || !ConnectToRFBServer(client,client->serverHost,client->serverPort))
      return FALSE;
  }

  /* Initialise the VNC connection, including reading the password */

  if (!InitialiseRFBConnection(client))
    return FALSE;

  if (!SetFormatAndEncodings(client))
    return FALSE;

  client->width=client->si.framebufferWidth;
  client->height=client->si.framebufferHeight;
  client->MallocFrameBuffer(client);
  if (!SendFramebufferUpdateRequest(client,
				    0,0,client->width,client->height,FALSE))
    return FALSE;

  return TRUE;
}

rfbBool rfbInitClient(rfbClient* client,int* argc,char** argv) {
  int i,j;

  if(argv>0 && argc && *argc) {
    if(client->programName==0)
      client->programName=argv[0];

    for (i = 1; i < *argc; i++) {
      j = i;
      if (strcmp(argv[i], "-listen") == 0) {
	listenForIncomingConnections(client);
	break;
      } else if (strcmp(argv[i], "-play") == 0) {
	client->serverPort = -1;
	j++;
      } else if (i+1<*argc && strcmp(argv[i], "-encodings") == 0) {
	client->appData.encodingsString = argv[i+1];
	j+=2;
      } else if (i+1<*argc && strcmp(argv[i], "-compress") == 0) {
	client->appData.compressLevel = atoi(argv[i+1]);
	j+=2;
      } else if (i+1<*argc && strcmp(argv[i], "-quality") == 0) {
	client->appData.qualityLevel = atoi(argv[i+1]);
	j+=2;
      } else {
	char* colon=strchr(argv[i],':');

	if(colon) {
	  client->serverHost=strdup(argv[i]);
	  client->serverHost[(int)(colon-argv[i])]='\0';
	  client->serverPort=atoi(colon+1);
	} else {
	  client->serverHost=strdup(argv[i]);
	}
	if(client->serverPort>=0 && client->serverPort<5900)
	  client->serverPort+=5900;
      }
      /* purge arguments */
      if (j>i) {
	*argc-=j-i;
	memmove(argv+i,argv+j,(*argc-i)*sizeof(char*));
	i--;
      }
    }
  }

  if(!rfbInitConnection(client)) {
    rfbClientCleanup(client);
    return FALSE;
  }

  return TRUE;
}

void rfbClientCleanup(rfbClient* client) {
#ifdef LIBVNCSERVER_HAVE_LIBZ
#ifdef LIBVNCSERVER_HAVE_LIBJPEG
  int i;

  for ( i = 0; i < 4; i++ ) {
    if (client->zlibStreamActive[i] == TRUE ) {
      if (inflateEnd (&client->zlibStream[i]) != Z_OK &&
	  client->zlibStream[i].msg != NULL)
	rfbClientLog("inflateEnd: %s\n", client->zlibStream[i].msg);
    }
  }

  if ( client->decompStreamInited == TRUE ) {
    if (inflateEnd (&client->decompStream) != Z_OK &&
	client->decompStream.msg != NULL)
      rfbClientLog("inflateEnd: %s\n", client->decompStream.msg );
  }

  if (client->jpegSrcManager)
    free(client->jpegSrcManager);
#endif
#endif

  free(client->desktopName);
  free(client->serverHost);
  free(client);
}