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fbvncserver.c
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fbvncserver.c
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/*
* fbvncserver.c
* This file is part of the vircon virtual console driver and service.
* Copyright (C) 2015 Dirk Herrendoerfer
*
* This program 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, or (at your option) any
* later version.
*
* This program 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.
*
* This project is an adaptation of the original fbvncserver.
*/
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/sysmacros.h>
#include <fcntl.h>
#include <linux/fb.h>
#include <linux/kd.h>
#include <linux/keyboard.h>
#include <linux/input.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <assert.h>
#include <errno.h>
/* libvncserver */
#include "rfb/rfb.h"
#include "rfb/keysym.h"
/*****************************************************************************/
static char FB_DEVICE[256] = "/dev/fb0";
static char KBD_DEVICE[256] = "auto";
static char TOUCH_DEVICE[256] = "auto";
static struct fb_var_screeninfo scrinfo;
static struct fb_var_screeninfo scrinfo_m;
static int fbfd = -1;
static int kbdfd = -1;
static int touchfd = -1;
static unsigned short int *fbmmap = MAP_FAILED;
static size_t fbmmap_size;
static unsigned short int *vncbuf;
static unsigned short int *fbbuf;
static int mpid = 0;
static int shutdown_set = 0;
#define VNC_PORT 5901
#define AUTHFILE "/.rfbpasswd"
static char pidfile[]="/var/run/fbvncserver.pid";
static rfbScreenInfoPtr vncscr;
in_addr_t vncaddr;
static int xmin, xmax;
static int ymin, ymax;
/* Defines if the mouse should move softly with many updates or if the
* mouse acts like a touch device only moving upon each button update */
static int mousemode = 0;
/* Defines if the web server should be started */
static int webmode = 0;
/* Defines preset auth */
static int authmode = 0;
/*****************************************************************************/
static void keyevent(rfbBool down, rfbKeySym key, rfbClientPtr cl);
static void ptrevent(int buttonMask, int x, int y, rfbClientPtr cl);
/* No idea, just copied from fbvncserver as part of the frame differerencing
* algorithm. I will probably be later rewriting all of this. */
static struct varblock_t
{
int min_i;
int min_j;
int max_i;
int max_j;
int r_offset;
int g_offset;
int b_offset;
int rfb_xres;
int rfb_maxy;
} varblock;
/*****************************************************************************/
static void keyevent(rfbBool down, rfbKeySym key, rfbClientPtr cl);
static void ptrevent(int buttonMask, int x, int y, rfbClientPtr cl);
/*****************************************************************************/
static void init_fb(void)
{
size_t pixels;
size_t bytespp;
if ((fbfd = open(FB_DEVICE, O_RDONLY)) == -1) {
fprintf(stderr, "cannot open fb device %s\n", FB_DEVICE);
exit(EXIT_FAILURE);
}
if (ioctl(fbfd, FBIOGET_VSCREENINFO, &scrinfo) != 0) {
fprintf(stderr, "ioctl error\n");
exit(EXIT_FAILURE);
}
pixels = scrinfo.xres * scrinfo.yres;
bytespp = scrinfo.bits_per_pixel / 8;
fprintf(stderr, "xres=%d, yres=%d, xresv=%d, yresv=%d, xoffs=%d, yoffs=%d, bpp=%d\n",
(int)scrinfo.xres, (int)scrinfo.yres,
(int)scrinfo.xres_virtual, (int)scrinfo.yres_virtual,
(int)scrinfo.xoffset, (int)scrinfo.yoffset,
(int)scrinfo.bits_per_pixel);
fbmmap_size = pixels * bytespp;
fbmmap = mmap(NULL, fbmmap_size, PROT_READ, MAP_SHARED, fbfd, 0);
if (fbmmap == MAP_FAILED) {
fprintf(stderr, "mmap failed\n");
exit(EXIT_FAILURE);
}
}
static void cleanup_fb(void)
{
if(fbfd != -1) {
munmap(fbmmap, fbmmap_size);
close(fbfd);
}
}
static int find_evdev(char *usename)
{
int rfd, i;
char device[32] = "";
char name[256] = "Unknown";
for (i=0 ; i<16 ; i++) {
sprintf(device,"/dev/input/event%i",i);
if ((rfd = open (device, O_RDONLY)) != -1) {
ioctl (rfd, EVIOCGNAME (sizeof (name)), name);
close(rfd);
if (!strcmp (name,usename)) {
return i;
}
}
}
return 0;
}
static int kfd;
static int nr_keys = 0;
static int keymap_index[MAX_NR_KEYMAPS]; /* inverse of good_keymap */
static int good_keymap[MAX_NR_KEYMAPS], keymapnr, allocct;
static int is_a_console(int fd) {
char arg;
arg = 0;
return (ioctl(fd, KDGKBTYPE, &arg) == 0 && ((arg == KB_101) || (arg == KB_84)));
}
static int open_a_console(const char *fnam) {
int fd;
/*
* * For ioctl purposes we only need some fd and permissions
* * do not matter. But setfont:activatemap() does a write.
* */
fd = open(fnam, O_RDWR);
if (fd < 0 && errno == EACCES)
fd = open(fnam, O_WRONLY);
if (fd < 0 && errno == EACCES)
fd = open(fnam, O_RDONLY);
if (fd < 0)
return -1;
if (!is_a_console(fd)) {
close(fd);
return -1;
}
return fd;
}
static int has_key(int n, int t) {
struct kbentry ke;
int ret;
ke.kb_table = t; /* plain map is always present */
ke.kb_index = n;
ret = !ioctl(kfd, KDGKBENT, (unsigned long)&ke);
#ifdef DEBUG
if (ret) {
fprintf (stdout, " got key value %04X for key %02X\n",ke.kb_value,n);
}
#endif
return ret;
}
static unsigned short get_key_sym(int n, int t) {
struct kbentry ke;
int ret;
ke.kb_table = t; /* plain map is always present */
ke.kb_index = n;
ret = !ioctl(kfd, KDGKBENT, (unsigned long)&ke);
if (ret) {
return ke.kb_value;
}
return 0;
}
static void find_nr_keys(void) {
nr_keys = (has_key(255,0) ? 256 : has_key(127,0) ? 128 : 112);
}
static void init_kbd()
{
char name[256] = "unknown";
int i;
if((kbdfd = open(KBD_DEVICE, O_RDWR)) == -1) {
fprintf(stderr, "cannot open kbd device %s\n", KBD_DEVICE);
exit(EXIT_FAILURE);
}
ioctl (kbdfd, EVIOCGNAME (sizeof (name)), name);
#ifdef DEBUG
fprintf (stdout, " using device \"%s\"\n",name );
fprintf (stdout, "Learning keys\n");
#endif
kfd = open_a_console("/dev/tty0");
#ifdef DEBUG
if (kfd >= 0)
fprintf (stdout, " got console.\n");
#endif
find_nr_keys();
#ifdef DEBUG
fprintf (stdout, " got %d keys\n",nr_keys);
#endif
}
static void cleanup_kbd()
{
if(kbdfd != -1) {
close(kbdfd);
}
if(kfd != -1) {
close(kfd);
}
}
static void init_touch()
{
char name[256] = "unknown";
struct input_absinfo info;
if((touchfd = open(TOUCH_DEVICE, O_RDWR)) == -1) {
fprintf(stderr, "cannot open touch device %s\n", TOUCH_DEVICE);
exit(EXIT_FAILURE);
}
ioctl (touchfd, EVIOCGNAME (sizeof (name)), name);
// Get the Range of X and Y
if(ioctl(touchfd, EVIOCGABS(ABS_X), &info)) {
fprintf(stderr, "cannot get ABS_X info, %s\n", strerror(errno));
exit(EXIT_FAILURE);
}
xmin = info.minimum;
xmax = info.maximum;
if(ioctl(touchfd, EVIOCGABS(ABS_Y), &info)) {
fprintf(stderr, "cannot get ABS_Y, %s\n", strerror(errno));
exit(EXIT_FAILURE);
}
ymin = info.minimum;
ymax = info.maximum;
#ifdef DEBUG
fprintf (stdout, " using device \"%s\"\n",name );
fprintf (stdout, " X info min:%i max:%i\n",xmin,xmax );
fprintf (stdout, " Y info min:%i max:%i\n",ymin,ymax );
#endif
}
static void cleanup_touch()
{
if(touchfd != -1) {
close(touchfd);
}
}
/*****************************************************************************/
int write_pid ()
{
FILE *f;
int fd;
int pid;
if ( ((fd = open(pidfile, O_RDWR|O_CREAT, 0644)) == -1)
|| ((f = fdopen(fd, "r+")) == NULL) ) {
fprintf(stderr, "Can't open or create %s.\n", pidfile);
return 0;
}
/* It is already somewhat safe to put up the pidfile
* if we got past creating the server socket, that
* should somewhat inicate we are the only one on the
* system
**/
pid = getpid();
if (!fprintf(f,"%d\n", pid)) {
fprintf(stderr, "Can't write pid.\n");
close(fd);
return 0;
}
fflush(f);
close(fd);
return pid;
}
int remove_pid ()
{
return unlink (pidfile);
}
/*****************************************************************************/
static void init_fb_server(int argc, char **argv)
{
int bitsPerSample;
#ifdef DEBUG
fprintf(stdout, "Initializing VNC server...\n");
#endif
/* Allocate the VNC server buffer to be managed (not manipulated) by
* libvncserver. */
vncbuf = calloc(scrinfo.xres * scrinfo.yres, scrinfo.bits_per_pixel / 8);
assert(vncbuf != NULL);
/* Allocate the comparison buffer for detecting drawing updates from frame
* to frame. */
fbbuf = calloc(scrinfo.xres * scrinfo.yres, scrinfo.bits_per_pixel / 8);
assert(fbbuf != NULL);
if (scrinfo.bits_per_pixel == 16) {
bitsPerSample = 5;
vncscr = rfbGetScreen(&argc, argv, scrinfo.xres, scrinfo.yres, 5, 2, (scrinfo.bits_per_pixel / 8));
}
else if (scrinfo.bits_per_pixel == 24) {
bitsPerSample = 8;
vncscr = rfbGetScreen(&argc, argv, scrinfo.xres, scrinfo.yres, 8, 3, 4);
vncscr->serverFormat.bitsPerPixel = 32;
vncscr->serverFormat.depth = 24;
}
else if (scrinfo.bits_per_pixel == 32) {
bitsPerSample = 8;
vncscr = rfbGetScreen(&argc, argv, scrinfo.xres, scrinfo.yres, 8, 3, 4);
vncscr->serverFormat.bitsPerPixel = 32;
vncscr->serverFormat.depth = 32;
}
assert(vncscr != NULL);
vncscr->desktopName = "Vircon Screen";
vncscr->frameBuffer = (char *)vncbuf;
vncscr->alwaysShared = FALSE;
if (webmode == 1)
vncscr->httpDir = "/.vnc-webclient";
if (vncscr->httpPort == 0)
vncscr->httpPort = 5800;
if (vncscr->port == 0)
vncscr->port = VNC_PORT;
if (authmode == 1)
vncscr->authPasswdData=AUTHFILE;
vncscr->listenInterface = vncaddr;
#ifdef DEBUG
fprintf(stdout, " red.offset: %d\n", (int)scrinfo.red.offset);
fprintf(stdout, " red.length: %d\n", (int)scrinfo.red.length);
fprintf(stdout, " green.offset: %d\n", (int)scrinfo.green.offset);
fprintf(stdout, " green.length: %d\n", (int)scrinfo.green.length);
fprintf(stdout, " blue.offset: %d\n", (int)scrinfo.blue.offset);
fprintf(stdout, " blue.length: %d\n", (int)scrinfo.blue.length);
fprintf(stdout, " vncscr->serverFormat.redMax: %d\n", (int)vncscr->serverFormat.redMax);
fprintf(stdout, " vncscr->serverFormat.greenMax: %d\n", (int)vncscr->serverFormat.greenMax);
fprintf(stdout, " vncscr->serverFormat.blueMax: %d\n", (int)vncscr->serverFormat.blueMax);
fprintf(stdout, " vncscr->serverFormat.redShift: %d\n", (int)vncscr->serverFormat.redShift);
fprintf(stdout, " vncscr->serverFormat.greenShift: %d\n", (int)vncscr->serverFormat.greenShift);
fprintf(stdout, " vncscr->serverFormat.blueShift: %d\n", (int)vncscr->serverFormat.blueShift);
#endif
vncscr->kbdAddEvent = keyevent;
vncscr->ptrAddEvent = ptrevent;
rfbInitServer(vncscr);
if (vncscr->listenSock==-1) {
fprintf(stderr, "cannot start server.\n");
exit(EXIT_FAILURE);
}
/* Write the pid file */
write_pid();
/* Mark as dirty since we haven't sent any updates at all yet. */
rfbMarkRectAsModified(vncscr, 0, 0, scrinfo.xres, scrinfo.yres);
/* FB to RFB copying */
varblock.r_offset = scrinfo.red.offset + scrinfo.red.length - bitsPerSample;
varblock.g_offset = scrinfo.green.offset + scrinfo.green.length - bitsPerSample;
varblock.b_offset = scrinfo.blue.offset + scrinfo.blue.length - bitsPerSample;
varblock.rfb_xres = scrinfo.yres;
varblock.rfb_maxy = scrinfo.xres - 1;
}
static void changeResolution()
{
size_t pixels;
size_t bytespp;
#ifdef DEBUG
fprintf(stdout, "Changing resolution.\n");
#endif
/* Clean up the old mapping and buffers*/
free(vncbuf);
free(fbbuf);
munmap(fbmmap, fbmmap_size);
/* Get the new screen layout information */
if (ioctl(fbfd, FBIOGET_VSCREENINFO, &scrinfo) != 0) {
printf("ioctl error\n");
exit(EXIT_FAILURE);
}
pixels = scrinfo.xres * scrinfo.yres;
bytespp = scrinfo.bits_per_pixel / 8;
#ifdef DEBUG
printf("Mapping new fb.\n");
fprintf(stdout, "xres=%d, yres=%d, xresv=%d, yresv=%d, xoffs=%d, yoffs=%d, bpp=%d\n",
(int)scrinfo.xres, (int)scrinfo.yres,
(int)scrinfo.xres_virtual, (int)scrinfo.yres_virtual,
(int)scrinfo.xoffset, (int)scrinfo.yoffset,
(int)scrinfo.bits_per_pixel);
#endif
/* Map the new framebuffer into memory */
fbmmap_size = pixels * bytespp;
fbmmap = mmap(NULL, fbmmap_size, PROT_READ, MAP_SHARED, fbfd, 0);
if (fbmmap == MAP_FAILED) {
fprintf(stderr, "mmap failed\n");
exit(EXIT_FAILURE);
}
/* Allocate the VNC server buffer to be managed (not manipulated) by
* libvncserver. */
vncbuf = calloc(scrinfo.xres * scrinfo.yres, scrinfo.bits_per_pixel / 8);
assert(vncbuf != NULL);
/* Allocate the comparison buffer for detecting drawing updates from frame
* to frame. */
fbbuf = calloc(scrinfo.xres * scrinfo.yres, scrinfo.bits_per_pixel / 8);
assert(fbbuf != NULL);
/* Tell libvncserver that the resolution has changed. */
//rfbNewFramebuffer (rfbScreenInfoPtr rfbScreen, char *framebuffer, int width, int height, int bitsPerSample, int samplesPerPixel, int bytesPerPixel)
rfbNewFramebuffer(vncscr, (char *)vncbuf, scrinfo.xres, scrinfo.yres, 5, 2, (scrinfo.bits_per_pixel / 8));
#ifdef DEBUG
printf("Change resolution complete.\n");
#endif
}
/*****************************************************************************/
static void injectKeyEvent(uint16_t code, uint16_t value)
{
struct input_event ev;
memset(&ev, 0, sizeof(ev));
gettimeofday(&ev.time,0);
ev.type = EV_KEY;
ev.code = code;
ev.value = value;
if(write(kbdfd, &ev, sizeof(ev)) < 0) {
fprintf(stderr,"write event failed, %s\n", strerror(errno));
}
#ifdef DEBUG
printf("injectKey (%d, %d)\n", code , value);
#endif
gettimeofday(&ev.time,0);
ev.type = EV_SYN;
ev.code = 0;
ev.value = 0;
if(write(kbdfd, &ev, sizeof(ev)) < 0) {
fprintf(stderr,"write event failed, %s\n", strerror(errno));
}
}
static int keysym2scancode(rfbBool down, rfbKeySym key, rfbClientPtr cl)
{
int scancode = 0;
int code = (int)key;
if (code>='0' && code<='9') {
scancode = (code & 0xF) - 1;
if (scancode<0) scancode += 10;
scancode += KEY_1;
} else if (code>=0xFF50 && code<=0xFF58) {
static const uint16_t map[] =
{ KEY_HOME, KEY_LEFT, KEY_UP, KEY_RIGHT, KEY_DOWN,
KEY_PAGEUP , KEY_PAGEDOWN , KEY_END, 0 };
scancode = map[code & 0xF];
} else if (code>=0xFFBE && code<=0xFFC9) {
static const uint16_t map[] =
{ KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6,
KEY_F7, KEY_F8, KEY_F9, KEY_F10, KEY_F11, KEY_F12 };
scancode = map[code - 0xFFBE];
} else if (code>=0xFFE1 && code<=0xFFEE) {
static const uint16_t map[] =
{ 0, KEY_LEFTSHIFT, KEY_LEFTSHIFT,
KEY_LEFTCTRL, KEY_RIGHTCTRL,
KEY_LEFTSHIFT, KEY_LEFTSHIFT,
0,0,
KEY_LEFTALT, KEY_RIGHTALT,
0, 0, 0, 0 };
scancode = map[code & 0xF];
} else if ((code>='A' && code<='Z') || (code>='a' && code<='z')) {
static const uint16_t map[] = {
KEY_A, KEY_B, KEY_C, KEY_D, KEY_E,
KEY_F, KEY_G, KEY_H, KEY_I, KEY_J,
KEY_K, KEY_L, KEY_M, KEY_N, KEY_O,
KEY_P, KEY_Q, KEY_R, KEY_S, KEY_T,
KEY_U, KEY_V, KEY_W, KEY_X, KEY_Y, KEY_Z };
scancode = map[(code & 0x5F) - 'A'];
} else {
switch (code)
{
case 0xFE03: scancode = 92; break;
case 0xFF08: scancode = KEY_BACKSPACE; break;
// case 0xFF63: scancode = KEY_INSERT; break;
case 0xFF1B: scancode = KEY_ESC; break;
case 0xFF09: scancode = KEY_TAB; break;
case 0xFF0D: scancode = KEY_ENTER; break;
case 0xFFFF: scancode = KEY_DELETE; break;
case 0xFFC8: rfbShutdownServer(cl->screen,TRUE); break; // F11
}
if (!scancode) {
int i;
unsigned short kcode;
/* Hunt them down */
for (i=0;i<nr_keys;i++) {
/* Looking in keytable for normal keys */
kcode = get_key_sym(i,0);
if (kcode == code) {
scancode = i;
#ifdef DEBUG
fprintf(stdout, "Search normal\n");
#endif
break;
}
/* Looking in keytable for keys with shift */
kcode = get_key_sym(i,1);
if (kcode == code) {
scancode = i;
#ifdef DEBUG
fprintf(stdout, "Search shifted\n");
#endif
break;
}
}
}
}
return scancode;
}
static void keyevent(rfbBool down, rfbKeySym key, rfbClientPtr cl)
{
int scancode;
#ifdef DEBUG
fprintf(stdout, "Got keysym: %04x (state=%d)\n", (unsigned int)key, (int)down);
#endif
if ((scancode = keysym2scancode(down, key, cl))) {
injectKeyEvent(scancode, down);
}
}
static void injectMoveEvent(int x, int y)
{
struct input_event ev;
#ifdef DEBUG
fprintf(stdout, "handleMoveEvent (x=%d, y=%d)\n", x , y);
#endif
if (xmax != 0 && ymax != 0) {
x = xmin + (x * (xmax - xmin)) / (scrinfo.xres);
y = ymin + (y * (ymax - ymin)) / (scrinfo.yres);
}
memset(&ev, 0, sizeof(ev));
gettimeofday(&ev.time,0);
ev.type = EV_ABS;
ev.code = ABS_X;
ev.value = x;
if(write(touchfd, &ev, sizeof(ev)) < 0) {
fprintf(stderr, "write event failed, %s\n", strerror(errno));
}
gettimeofday(&ev.time,0);
ev.type = EV_ABS;
ev.code = ABS_Y;
ev.value = y;
if(write(touchfd, &ev, sizeof(ev)) < 0) {
fprintf(stderr, "write event failed, %s\n", strerror(errno));
}
gettimeofday(&ev.time,0);
ev.type = EV_SYN;
ev.code = 0;
ev.value = 0;
if(write(touchfd, &ev, sizeof(ev)) < 0) {
fprintf(stderr, "write event failed, %s\n", strerror(errno));
}
}
static void injectWheelEvent(int z, int x, int y)
{
struct input_event ev;
#ifdef DEBUG
printf("handleTouchEvent (x=%d, y=%d, inc=%d)\n", x , y, z);
#endif
// Move the pointer first
injectMoveEvent(x,y);
memset(&ev, 0, sizeof(ev));
// Then send a BTN_XXXX
gettimeofday(&ev.time,0);
ev.type = EV_REL;
ev.code = REL_WHEEL;
ev.value = z;
if(write(touchfd, &ev, sizeof(ev)) < 0) {
fprintf(stderr, "write event failed, %s\n", strerror(errno));
}
gettimeofday(&ev.time,0);
ev.type = EV_SYN;
ev.code = 0;
ev.value = 0;
if(write(touchfd, &ev, sizeof(ev)) < 0) {
fprintf(stderr, "write event failed, %s\n", strerror(errno));
}
#ifdef DEBUG
fprintf(stdout, "injectWheelEvent (x=%d, y=%d, inc=%d)\n", x , y, z);
#endif
}
static void injectTouchEvent(int down, int button, int x, int y)
{
static const uint16_t map[] = { BTN_LEFT, BTN_MIDDLE, BTN_RIGHT, BTN_FORWARD, BTN_BACK};
struct input_event ev;
#ifdef DEBUG
fprintf(stdout, "handleTouchEvent (x=%d, y=%d, button=%d, down=%d)\n", x , y, button, down);
#endif
memset(&ev, 0, sizeof(ev));
// Then send a BTN_XXXX
gettimeofday(&ev.time,0);
ev.type = EV_KEY;
ev.code = map[button];
ev.value = down;
if(write(touchfd, &ev, sizeof(ev)) < 0) {
fprintf(stderr, "write event failed, %s\n", strerror(errno));
}
/* Move event also adds the SYN */
injectMoveEvent(x,y);
#ifdef DEBUG
fprintf(stdout, "injectTouchEvent (x=%d, y=%d, down=%d)\n", x , y, down);
#endif
}
static int prev_x = 0;
static int prev_y = 0;
static int prev_buttonMask = 0;
static void ptrevent(int buttonMask, int x, int y, rfbClientPtr cl)
{
//printf("Got ptrevent: %04x (x=%d, y=%d)\n", buttonMask, x, y);
if((buttonMask & 1) != 0 && (prev_buttonMask & 1) == 0 ) {
// Simulate left mouse event as touch event
injectTouchEvent(1, 0, x, y);
prev_buttonMask = buttonMask;
return;
}
else if((prev_buttonMask & 1) != 0 && (buttonMask & 1) == 0 ) {
// Simulate left mouse event as touch event
injectTouchEvent(0, 0, x, y);
prev_buttonMask = buttonMask;
return;
}
if((buttonMask & 2) != 0 && (prev_buttonMask & 2) == 0 ) {
// Simulate middle mouse event as touch event
injectTouchEvent(1, 1, x, y);
prev_buttonMask = buttonMask;
return;
}
else if((prev_buttonMask & 2) != 0 && (buttonMask & 2) == 0 ) {
// Simulate middle mouse event as touch event
injectTouchEvent(0, 1, x, y);
prev_buttonMask = buttonMask;
return;
}
if((buttonMask & 4) != 0 && (prev_buttonMask & 4) == 0 ) {
// Simulate right mouse event as touch event
injectTouchEvent(1, 2, x, y);
prev_buttonMask = buttonMask;
return;
}
else if((prev_buttonMask & 4) != 0 && (buttonMask & 4) == 0 ) {
// Simulate right mouse event as touch event
injectTouchEvent(0, 2, x, y);
prev_buttonMask = buttonMask;
return;
}
if((buttonMask & 8) != 0 && (prev_buttonMask & 8) == 0 ) {
// Simulate right mouse event as touch event
//injectTouchEvent(1, 3, x, y);
injectWheelEvent(1, x, y);
prev_buttonMask = buttonMask;
return;
}
else if((prev_buttonMask & 8) != 0 && (buttonMask & 8) == 0 ) {
// Simulate right mouse event as touch event
//injectTouchEvent(0, 3, x, y);
prev_buttonMask = buttonMask;
return;
}
if((buttonMask & 16) != 0 && (prev_buttonMask & 16) == 0 ) {
// Simulate right mouse event as touch event
//injectTouchEvent(1, 4, x, y);
injectWheelEvent(-1, x, y);
prev_buttonMask = buttonMask;
return;
}
else if((prev_buttonMask & 16) != 0 && (buttonMask & 16) == 0 ) {
// Simulate right mouse event as touch event
//injectTouchEvent(0, 4, x, y);
prev_buttonMask = buttonMask;
return;
}
if (mousemode) {
// Simulate mouse movement
if ( x != prev_x || y != prev_y ) {
injectMoveEvent(x,y);
prev_x = x;
prev_y = y;
}
}
}
static int readScreenInfo_m()
{
if (ioctl(fbfd, FBIOGET_VSCREENINFO, &scrinfo_m) != 0) {
fprintf(stderr, "ioctl error\n");
exit(EXIT_FAILURE);
}
if (scrinfo.xres != scrinfo_m.xres ||
scrinfo.yres != scrinfo_m.yres ||
scrinfo.bits_per_pixel != scrinfo_m.bits_per_pixel ) {
return 1;
}
return 0;
}
#define PIXEL_FB_TO_RFB(p,r,g,b) ((p>>r)&0x1f001f)|(((p>>g)&0x1f001f)<<5)|(((p>>b)&0x1f001f)<<10)
static int update_screen(void)
{
unsigned int *f, *c, *r;
int x, y, line_changed,lines_unchanged,changes_pending;
/* Check if the framebuffer resolution was changed */
if (readScreenInfo_m()) {
return 3; //screen changed
}
varblock.min_i = varblock.min_j = 9999;
varblock.max_i = varblock.max_j = -1;
f = (unsigned int *)fbmmap; /* -> framebuffer */
c = (unsigned int *)fbbuf; /* -> compare framebuffer */
r = (unsigned int *)vncbuf; /* -> remote framebuffer */
line_changed = 0;
for (y = 0; y < scrinfo.yres; y++)
{
/* Compare every 2 pixels at a time, assuming that changes are likely
* in pairs. */
for (x = 0; x < scrinfo.xres; x += 2) {
unsigned int pixel = *f;
if (pixel != *c) {
*c = pixel;
line_changed = 1;
changes_pending = 1;
lines_unchanged = 0;
*r = PIXEL_FB_TO_RFB(pixel,
varblock.r_offset, varblock.g_offset, varblock.b_offset);
if (x < varblock.min_i)
varblock.min_i = x;
else {
if (x > varblock.max_i)
varblock.max_i = x;
if (y > varblock.max_j)
varblock.max_j = y;
else if (y < varblock.min_j)
varblock.min_j = y;
}
}
f++, c++;
r++;
}
if (!line_changed)
lines_unchanged++;
if (lines_unchanged > 5 && changes_pending) {
rfbMarkRectAsModified(vncscr, varblock.min_i, varblock.min_j,
varblock.max_i + 2, varblock.max_j + 1);
changes_pending = 0;
varblock.min_i = varblock.min_j = 9999;
varblock.max_i = varblock.max_j = -1;
}
}
if (varblock.min_i < 9999) {
if (varblock.max_i < 0)
varblock.max_i = varblock.min_i;
if (varblock.max_j < 0)
varblock.max_j = varblock.min_j;
#ifdef DEBUG
fprintf(stderr, "Dirty page: %dx%d+%d+%d...\n",
(varblock.max_i+2) - varblock.min_i, (varblock.max_j+1) - varblock.min_j,
varblock.min_i, varblock.min_j);
#endif
rfbMarkRectAsModified(vncscr, varblock.min_i, varblock.min_j,
varblock.max_i + 2, varblock.max_j + 1);
rfbProcessEvents(vncscr, 10000);
}
return 0;
}
/*****************************************************************************/
void sig_handler(int signo)
{
if (signo == SIGINT || signo == SIGTERM) {
printf("received SIGNAL\n");
shutdown_set = 1;
if (vncscr->clientHead == NULL) {
remove_pid();
exit(0);
}
}
}
/*****************************************************************************/
void print_usage(char **argv)
{
fprintf(stdout, "%s [-k device] [-t device] [-h]\n"
"-k device: keyboard device node, default is autodetect 'vircon keyboard'\n"
"-t device: touch device node, default is autodetect 'vircon mouse'\n"
"-f device: fb device node, default is /dev/fb0\n"
"-m : mouse/touch mode, default is touch\n"
"-w : web server mode, default is off (Root is /.vnc-webclient)\n"
"-l : only offer connections on localhost interface, default is all\n"
"-d : don't become daemon process, run in foreground\n"
"-H : print this help\n",argv[0]);
}
int main(int argc, char **argv)
{
int daemonize = 1;
/*Per default: listen on all adresses*/
char vnc_ip_addr[64] = "0.0.0.0";
if(argc > 1) {
int i=1;
while(i < argc) {
if(*argv[i] == '-') {
switch(*(argv[i] + 1))
{
case 'H':
print_usage(argv);
exit(0);
break;
case 'a':
authmode=1;
break;
case 'w':
webmode=1;
break;
case 'm':
mousemode=1;
break;
case 'd':
daemonize=0;
break;
case 'l':
sprintf(vnc_ip_addr,"127.0.0.1");
break;
case 'k':
i++;
strcpy(KBD_DEVICE, argv[i]);
break;
case 't':
i++;
strcpy(TOUCH_DEVICE, argv[i]);
break;
case 'f':
i++;
strcpy(FB_DEVICE, argv[i]);
break;
case 'p':
i++;
if (rfbEncryptAndStorePasswd(argv[i], AUTHFILE) != 0) {
printf("Storing password failed.\n");
exit (1);
}
printf("Storing password.\n");
exit (0);
break;
}
}
i++;
}
}
if (signal(SIGINT, sig_handler) == SIG_ERR)
printf("can't catch SIGINT\n");
if (signal(SIGTERM, sig_handler) == SIG_ERR)
printf("can't catch SIGTERM\n");