apps/vnc/vnc.c

   1 /*
   2  * Copyright (c) 2003, Adam Dunkels.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above
  11  *    copyright notice, this list of conditions and the following
  12  *    disclaimer in the documentation and/or other materials provided
  13  *    with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote
  15  *    products derived from this software without specific prior
  16  *    written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
  19  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  22  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  24  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  26  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  27  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  28  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * This file is part of the Contiki VNC client
  31  *
  32  * $Id: vnc.c,v 1.1 2006/06/17 23:08:35 adamdunkels Exp $
  33  *
  34  */
  35
  36 #include <string.h>
  37
  38 #include "contiki.h"
  39
  40 /*#include "petsciiconv.h"*/
  41 #include "net/uiplib.h"
  42 #include "net/uip.h"
  43 #include "ctk/ctk.h"
  44 #include "ctk/ctk-mouse.h"
  45 #include "net/resolv.h"
  46 /*#include "telnet.h"*/
  47 #include "vnc.h"
  48 #include "vnc-draw.h"
  49 #include "vnc-viewer.h"
  50 #include "contiki-conf.h"
  51
  52 #include "sys/loader.h"
  53
  54 #if 1
  55 #define PRINTF(x)
  56 #else
  57 #include <stdio.h>
  58 #define PRINTF(x) printf x
  59 #endif
  60
  61
  62 #ifdef VNC_CONF_VIEWPORT_WIDTH
  63 #define VNC_VIEWPORT_WIDTH VNC_CONF_VIEWPORT_WIDTH
  64 #else
  65 #define VNC_VIEWPORT_WIDTH 10
  66 #endif
  67
  68 #ifdef VNC_CONF_VIEWPORT_HEIGHT
  69 #define VNC_VIEWPORT_HEIGHT VNC_CONF_VIEWPORT_HEIGHT
  70 #else
  71 #define VNC_VIEWPORT_HEIGHT 10
  72 #endif
  73
  74 #define HEIGHT (4 + VNC_VIEWPORT_HEIGHT/8)
  75
  76 /* Main window */
  77 static struct ctk_window mainwindow;
  78
  79 static char host[20];
  80 static struct ctk_textentry hosttextentry =
  81   {CTK_TEXTENTRY(0, 0, 18, 1, host, 18)};
  82
  83 static char portentry[4];
  84 static struct ctk_textentry porttextentry =
  85   {CTK_TEXTENTRY(21, 0, 3, 1, portentry, 3)};
  86
  87 static struct ctk_button connectbutton =
  88   {CTK_BUTTON(27, 0, 7, "Connect")};
  89 /*static struct ctk_button disconnectbutton =
  90   {CTK_BUTTON(25, 3, 10, "Disconnect")};*/
  91
  92 static struct ctk_separator sep1 =
  93   {CTK_SEPARATOR(0, 1, 36)};
  94
  95 static struct ctk_bitmap vncbitmap =
  96   {CTK_BITMAP(2, 2,
  97               VNC_VIEWPORT_WIDTH / 8,
  98               VNC_VIEWPORT_HEIGHT / 8,
  99               vnc_draw_bitmap,
 100               VNC_VIEWPORT_WIDTH,
 101               VNC_VIEWPORT_HEIGHT)};
 102
 103 static struct ctk_button leftbutton =
 104   {CTK_BUTTON(6, HEIGHT - 1, 4, "Left")};
 105
 106 static struct ctk_button upbutton =
 107   {CTK_BUTTON(13, HEIGHT - 1, 2, "Up")};
 108
 109 static struct ctk_button downbutton =
 110   {CTK_BUTTON(18, HEIGHT - 1, 4, "Down")};
 111
 112 static struct ctk_button rightbutton =
 113   {CTK_BUTTON(25, HEIGHT - 1, 5, "Right")};
 114
 115 PROCESS(vnc_process, "VNC viewer");
 116
 117 /*-----------------------------------------------------------------------------------*/
 118 static void
 119 show(char *text)
 120 {
 121
 122 }
 123 /*-----------------------------------------------------------------------------------*/
 124 static void
 125 connect(void)
 126 {
 127   u16_t addr[2], *addrptr;
 128   u16_t port;
 129   char *cptr;
 130
 131   /* Find the first space character in host and put a zero there
 132      to end the string. */
 133   for(cptr = host; *cptr != ' ' && *cptr != 0; ++cptr);
 134   *cptr = 0;
 135
 136   addrptr = &addr[0];
 137   if(uiplib_ipaddrconv(host, (unsigned char *)addr) == 0) {
 138     addrptr = resolv_lookup(host);
 139     if(addrptr == NULL) {
 140       resolv_query(host);
 141       show("Resolving host...");
 142       return;
 143     }
 144   }
 145
 146   port = 0;
 147   for(cptr = portentry; *cptr != ' ' && *cptr != 0; ++cptr) {
 148     if(*cptr < '0' || *cptr > '9') {
 149       show("Port number error");
 150       return;
 151     }
 152     port = 10 * port + *cptr - '0';
 153   }
 154
 155
 156   vnc_viewer_connect(addrptr, port);
 157
 158   show("Connecting...");
 159
 160 }
 161 /*-----------------------------------------------------------------------------------*/
 162 PROCESS_THREAD(vnc_process, ev, data)
 163 {
 164   unsigned short x, y;
 165   unsigned char xc, yc;
 166
 167   PROCESS_BEGIN();
 168
 169   ctk_window_new(&mainwindow, 36, HEIGHT, "VNC client");
 170   ctk_window_move(&mainwindow, 0, 0);
 171
 172   CTK_WIDGET_ADD(&mainwindow, &hosttextentry);
 173   CTK_WIDGET_FOCUS(&mainwindow, &hosttextentry);
 174   CTK_WIDGET_ADD(&mainwindow, &porttextentry);
 175   CTK_WIDGET_ADD(&mainwindow, &connectbutton);
 176
 177   CTK_WIDGET_ADD(&mainwindow, &sep1);
 178
 179   CTK_WIDGET_ADD(&mainwindow, &vncbitmap);
 180
 181   CTK_WIDGET_ADD(&mainwindow, &leftbutton);
 182   CTK_WIDGET_ADD(&mainwindow, &upbutton);
 183   CTK_WIDGET_ADD(&mainwindow, &downbutton);
 184   CTK_WIDGET_ADD(&mainwindow, &rightbutton);
 185
 186   vnc_draw_init();
 187
 188   ctk_window_open(&mainwindow);
 189
 190   while(1) {
 191     PROCESS_WAIT_EVENT();
 192
 193     if(ev == ctk_signal_button_activate) {
 194       if(data == (process_data_t)&connectbutton) {
 195         connect();
 196       }
 197     } else if(ev == ctk_signal_window_close) {
 198       process_exit(&vnc_process);
 199       LOADER_UNLOAD();
 200     } else if(ev == resolv_event_found) {
 201       if(strcmp(data, host) == 0) {
 202         if(resolv_lookup(host) != NULL) {
 203           connect();
 204         } else {
 205           show("Host not found");
 206         }
 207       }
 208     } else if(ev == ctk_signal_pointer_move) {
 209       /* Check if pointer is within the VNC viewer area */
 210       x = ctk_mouse_x();
 211       y = ctk_mouse_y();
 212
 213       xc = ctk_mouse_xtoc(x);
 214       yc = ctk_mouse_ytoc(y);
 215
 216       if(xc >= 2 && yc >= 2 &&
 217          xc < 2 + VNC_VIEWPORT_WIDTH / 8 &&
 218          yc < 2 + VNC_VIEWPORT_HEIGHT / 8) {
 219
 220         VNC_VIEWER_POST_POINTER_EVENT(x, y, 0);
 221       }
 222
 223     } else if(ev == tcpip_event) {
 224       vnc_viewer_appcall(data);
 225     }
 226   }
 227
 228   PROCESS_END();
 229 }
 230 /*-----------------------------------------------------------------------------------*/
 231 void
 232 vnc_viewer_refresh(void)
 233 {
 234   CTK_WIDGET_REDRAW(&vncbitmap);
 235 }
 236 /*-----------------------------------------------------------------------------------*/