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1d03bafb9e
xrdp/vnc/vnc.c
jsorg71 1d03bafb9e added bitmap cache
2005-01-12 00:48:11 +00:00

736 lines
18 KiB
C
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/*
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 of the License, 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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2004
libvnc
*/
#include "vnc.h"
char* vnc_start_command =
"su %s -c \"sh ../vnc/startvnc.sh :%d %d %d %d\"";
char* vnc_stop_command =
"";
/******************************************************************************/
int lib_mod_event(struct vnc* v, int msg, int param1, int param2)
{
struct stream* s;
int key;
make_stream(s);
if (msg >= 15 && msg <= 16) /* key events */
{
key = 0;
if (param2 == 0xffff) /* ascii char */
{
key = param1;
}
else /* non ascii key event */
{
switch (param1)
{
case 0x0001: key = 0xff1b; break; /* ecs */
case 0x000e: key = 0xff08; break; /* backspace */
case 0x000f: key = 0xff09; break; /* tab */
case 0x001c: key = 0xff0d; break; /* enter */
/* left-right control */
case 0x001d: key = (param2 & 0x0100) ? 0xffe3 : 0xffe4; break;
case 0x002a: key = 0xffe1; break; /* left shift */
case 0x0036: key = 0xffe2; break; /* right shift */
/* left-right alt */
case 0x0038: key = (param2 & 0x0100) ? 0xffe9 : 0xffea; break;
case 0x003b: key = 0xffbe; break; /* F1 */
case 0x003c: key = 0xffbf; break; /* F2 */
case 0x003d: key = 0xffc0; break; /* F3 */
case 0x003e: key = 0xffc1; break; /* F4 */
case 0x003f: key = 0xffc2; break; /* F5 */
case 0x0040: key = 0xffc3; break; /* F6 */
case 0x0041: key = 0xffc4; break; /* F7 */
case 0x0042: key = 0xffc5; break; /* F8 */
case 0x0043: key = 0xffc6; break; /* F9 */
case 0x0044: key = 0xffc7; break; /* F10 */
case 0x0047: key = 0xff50; break; /* home */
case 0x0048: key = 0xff52; break; /* up arrow */
case 0x0049: key = 0xff55; break; /* page up */
case 0x004b: key = 0xff51; break; /* left arrow */
case 0x004d: key = 0xff53; break; /* right arrow */
case 0x004f: key = 0xff57; break; /* end */
case 0x0050: key = 0xff54; break; /* down arrow */
case 0x0051: key = 0xff56; break; /* page down */
case 0x0052: key = 0xff63; break; /* insert */
case 0x0053: key = 0xffff; break; /* delete */
case 0x0057: key = 0xffc8; break; /* F11 */
case 0x0058: key = 0xffc9; break; /* F12 */
}
}
if (key > 0)
{
init_stream(s, 8192);
out_uint8(s, 4);
out_uint8(s, msg == 15); /* down flag */
out_uint8s(s, 2);
out_uint32_be(s, key);
if (g_tcp_force_send(v->sck, s->data, 8) != 0)
{
free_stream(s);
return 1;
}
}
}
else if (msg >= 100 && msg <= 110) /* mouse events */
{
switch (msg)
{
case 100: break; /* WM_MOUSEMOVE */
case 101: v->mod_mouse_state &= ~1; break; /* WM_LBUTTONUP */
case 102: v->mod_mouse_state |= 1; break; /* WM_LBUTTONDOWN */
case 103: v->mod_mouse_state &= ~4; break; /* WM_RBUTTONUP */
case 104: v->mod_mouse_state |= 4; break; /* WM_RBUTTONDOWN */
case 105: v->mod_mouse_state &= ~2; break;
case 106: v->mod_mouse_state |= 2; break;
case 107: v->mod_mouse_state &= ~8; break;
case 108: v->mod_mouse_state |= 8; break;
case 109: v->mod_mouse_state &= ~16; break;
case 110: v->mod_mouse_state |= 16; break;
}
init_stream(s, 8192);
out_uint8(s, 5);
out_uint8(s, v->mod_mouse_state);
out_uint16_be(s, param1);
out_uint16_be(s, param2);
if (g_tcp_force_send(v->sck, s->data, 6) != 0)
{
free_stream(s);
return 1;
}
}
free_stream(s);
return 0;
}
//******************************************************************************
int get_pixel_safe(char* data, int x, int y, int width, int height, int bpp)
{
int start;
int shift;
if (x < 0)
return 0;
if (y < 0)
return 0;
if (x >= width)
return 0;
if (y >= height)
return 0;
if (bpp == 1)
{
width = (width + 7) / 8;
start = (y * width) + x / 8;
shift = x % 8;
return (data[start] & (0x80 >> shift)) != 0;
}
else if (bpp == 4)
{
width = (width + 1) / 2;
start = y * width + x / 2;
shift = x % 2;
if (shift == 0)
return (data[start] & 0xf0) >> 4;
else
return data[start] & 0x0f;
}
else if (bpp == 8)
{
return *(((unsigned char*)data) + (y * width + x));
}
else if (bpp == 15 || bpp == 16)
{
return *(((unsigned short*)data) + (y * width + x));
}
return 0;
}
/******************************************************************************/
void set_pixel_safe(char* data, int x, int y, int width, int height, int bpp,
int pixel)
{
int start;
int shift;
if (x < 0)
return;
if (y < 0)
return;
if (x >= width)
return;
if (y >= height)
return;
if (bpp == 1)
{
width = (width + 7) / 8;
start = (y * width) + x / 8;
shift = x % 8;
if (pixel & 1)
data[start] = data[start] | (0x80 >> shift);
else
data[start] = data[start] & ~(0x80 >> shift);
}
else if (bpp == 15 || bpp == 16)
{
*(((unsigned short*)data) + (y * width + x)) = pixel;
}
else if (bpp == 24)
{
*(data + (3 * (y * width + x)) + 0) = pixel >> 0;
*(data + (3 * (y * width + x)) + 1) = pixel >> 8;
*(data + (3 * (y * width + x)) + 2) = pixel >> 16;
}
}
/******************************************************************************/
int split_color(int pixel, int* r, int* g, int* b, int bpp, int* palette)
{
if (bpp == 8)
{
if (pixel >= 0 && pixel < 256 && palette != 0)
{
*r = (palette[pixel] >> 16) & 0xff;
*g = (palette[pixel] >> 8) & 0xff;
*b = (palette[pixel] >> 0) & 0xff;
}
}
else if (bpp == 16)
{
*r = ((pixel >> 8) & 0xf8) | ((pixel >> 13) & 0x7);
*g = ((pixel >> 3) & 0xfc) | ((pixel >> 9) & 0x3);
*b = ((pixel << 3) & 0xf8) | ((pixel >> 2) & 0x7);
}
return 0;
}
/******************************************************************************/
int make_color(int r, int g, int b, int bpp)
{
if (bpp == 24)
{
return (r << 16) | (g << 8) | b;
}
return 0;
}
/******************************************************************************/
int lib_framebuffer_update(struct vnc* v)
{
char* data;
char* d1;
char* d2;
char cursor_data[32 * (32 * 3)];
char cursor_mask[32 * (32 / 8)];
int num_recs;
int i;
int j;
int k;
int x;
int y;
int cx;
int cy;
int srcx;
int srcy;
int encoding;
int Bpp;
int pixel;
int r;
int g;
int b;
struct stream* s;
Bpp = (v->mod_bpp + 7) / 8;
make_stream(s);
init_stream(s, 8192);
if (g_tcp_force_recv(v->sck, s->data, 3) != 0)
{
free_stream(s);
return 1;
}
in_uint8s(s, 1);
in_uint16_be(s, num_recs);
v->server_begin_update(v);
for (i = 0; i < num_recs; i++)
{
init_stream(s, 8192);
if (g_tcp_force_recv(v->sck, s->data, 12) != 0)
{
free_stream(s);
return 1;
}
in_uint16_be(s, x);
in_uint16_be(s, y);
in_uint16_be(s, cx);
in_uint16_be(s, cy);
in_uint32_be(s, encoding);
if (encoding == 0) /* raw */
{
data = (char*)g_malloc(cx * cy * Bpp, 0);
if (g_tcp_force_recv(v->sck, data, cx * cy * Bpp) != 0)
{
g_free(data);
free_stream(s);
return 1;
}
v->server_paint_rect(v, x, y, cx, cy, data);
g_free(data);
}
else if (encoding == 1) /* copy rect */
{
init_stream(s, 8192);
if (g_tcp_force_recv(v->sck, s->data, 4) != 0)
{
free_stream(s);
return 1;
}
in_uint16_be(s, srcx);
in_uint16_be(s, srcy);
v->server_screen_blt(v, x, y, cx, cy, srcx, srcy);
}
else if (encoding == 0xffffff11) /* cursor */
{
g_memset(cursor_data, 0, 32 * (32 * 3));
g_memset(cursor_mask, 0, 32 * (32 / 8));
init_stream(s, 8192);
if (g_tcp_force_recv(v->sck, s->data,
cx * cy * Bpp + ((cx + 7) / 8) * cy) != 0)
{
free_stream(s);
return 1;
}
in_uint8p(s, d1, cx * cy * Bpp);
in_uint8p(s, d2, ((cx + 7) / 8) * cy);
for (j = 0; j < 32; j++)
{
for (k = 0; k < 32; k++)
{
pixel = get_pixel_safe(d2, k, 31 - j, cx, cy, 1);
set_pixel_safe(cursor_mask, k, j, 32, 32, 1, !pixel);
if (pixel)
{
pixel = get_pixel_safe(d1, k, 31 - j, cx, cy, v->mod_bpp);
split_color(pixel, &r, &g, &b, v->mod_bpp, v->palette);
pixel = make_color(r, g, b, 24);
set_pixel_safe(cursor_data, k, j, 32, 32, 24, pixel);
}
}
}
v->server_set_cursor(v, x, y, cursor_data, cursor_mask);
}
}
v->server_end_update(v);
/* FrambufferUpdateRequest */
init_stream(s, 8192);
out_uint8(s, 3);
out_uint8(s, 1);
out_uint16_be(s, 0);
out_uint16_be(s, 0);
out_uint16_be(s, v->mod_width);
out_uint16_be(s, v->mod_height);
if (g_tcp_force_send(v->sck, s->data, 10) != 0)
{
free_stream(s);
return 1;
}
free_stream(s);
return 0;
}
/******************************************************************************/
int lib_clip_data(struct vnc* v)
{
struct stream* s;
int size;
make_stream(s);
init_stream(s, 8192);
if (g_tcp_force_recv(v->sck, s->data, 7) != 0)
{
free_stream(s);
return 1;
}
in_uint8s(s, 3);
in_uint32_be(s, size);
init_stream(s, 8192);
if (g_tcp_force_recv(v->sck, s->data, size) != 0)
{
free_stream(s);
return 1;
}
free_stream(s);
return 0;
}
/******************************************************************************/
int lib_palette_update(struct vnc* v)
{
struct stream* s;
int first_color;
int num_colors;
int i;
int r;
int g;
int b;
make_stream(s);
init_stream(s, 8192);
if (g_tcp_force_recv(v->sck, s->data, 5) != 0)
{
free_stream(s);
return 1;
}
in_uint8s(s, 1);
in_uint16_be(s, first_color);
in_uint16_be(s, num_colors);
init_stream(s, 8192);
if (g_tcp_force_recv(v->sck, s->data, num_colors * 6) != 0)
{
free_stream(s);
return 1;
}
for (i = 0; i < num_colors; i++)
{
in_uint16_be(s, r);
in_uint16_be(s, g);
in_uint16_be(s, b);
r = r >> 8;
g = g >> 8;
b = b >> 8;
v->palette[first_color + i] = (r << 16) | (g << 8) | b;
}
v->server_begin_update(v);
v->server_palette(v, v->palette);
v->server_end_update(v);
free_stream(s);
return 0;
}
/******************************************************************************/
int lib_mod_signal(struct vnc* v)
{
char type;
if (g_tcp_force_recv(v->sck, &type, 1) != 0)
{
return 1;
}
if (type == 0) /* framebuffer update */
{
if (lib_framebuffer_update(v) != 0)
{
return 1;
}
}
else if (type == 1) /* palette */
{
if (lib_palette_update(v) != 0)
{
return 1;
}
}
else if (type == 3) /* clipboard */
{
if (lib_clip_data(v) != 0)
{
return 1;
}
}
else
{
g_printf("unknown in lib_mod_signal %d\n\r", type);
}
return 0;
}
/******************************************************************************/
int lib_mod_start(struct vnc* v, int w, int h, int bpp)
{
v->server_begin_update(v);
v->server_fill_rect(v, 0, 0, w, h, 0);
v->server_end_update(v);
v->server_width = w;
v->server_height = h;
v->server_bpp = bpp;
return 0;
}
/******************************************************************************/
/*
return error
1 - authentation failed
2 - authentation failed
3 - server name length received from server too long
4 - server and client bpp do not match
5 - no more available X desktops when spawning a new session
6 - no ip
*/
int lib_mod_connect(struct vnc* v)
{
char cursor_data[32 * (32 * 3)];
char cursor_mask[32 * (32 / 8)];
char text[256];
char con_port[256];
struct stream* s;
struct stream* pixel_format;
int error;
int i;
int check_sec_result;
check_sec_result = 1;
if (g_strcmp(v->ip, "") == 0)
{
return 6;
}
if (g_strcmp(v->port, "-1") == 0)
{
i = 10;
g_sprintf(text, vnc_start_command, v->username, i, v->server_bpp,
v->server_width, v->server_height);
error = g_system(text);
while (error != 0 && i < 100)
{
i++;
g_sprintf(text, vnc_start_command, v->username, i, v->server_bpp,
v->server_width, v->server_height);
error = g_system(text);
}
if (error != 0)
{
return 5;
}
g_sprintf(con_port, "%d", 5900 + i);
v->vnc_desktop = i;
}
else
{
g_sprintf(con_port, "%s", v->port);
}
make_stream(s);
make_stream(pixel_format);
v->sck = g_tcp_socket();
error = g_tcp_connect(v->sck, v->ip, con_port);
if (error == 0)
{
g_tcp_set_non_blocking(v->sck);
/* protocal version */
init_stream(s, 8192);
g_tcp_force_recv(v->sck, s->data, 12);
g_tcp_force_send(v->sck, "RFB 003.003\n", 12);
/* sec type */
init_stream(s, 8192);
g_tcp_force_recv(v->sck, s->data, 4);
in_uint32_be(s, i);
if (i == 1) /* none */
{
check_sec_result = 0;
}
else if (i == 2) /* dec the password and the server random */
{
init_stream(s, 8192);
g_tcp_force_recv(v->sck, s->data, 16);
rfbEncryptBytes((unsigned char*)s->data, v->password);
g_tcp_force_send(v->sck, s->data, 16);
}
else
{
error = 1;
}
}
if (error == 0 && check_sec_result)
{
/* sec result */
init_stream(s, 8192);
g_tcp_force_recv(v->sck, s->data, 4);
in_uint32_be(s, i);
if (i != 0)
{
error = 2;
}
}
if (error == 0)
{
init_stream(s, 8192);
s->data[0] = 1;
g_tcp_force_send(v->sck, s->data, 1); /* share flag */
g_tcp_force_recv(v->sck, s->data, 4); /* server init */
in_uint16_be(s, v->mod_width);
in_uint16_be(s, v->mod_height);
init_stream(pixel_format, 8192);
g_tcp_force_recv(v->sck, pixel_format->data, 16);
in_uint8(pixel_format, v->mod_bpp);
init_stream(s, 8192);
g_tcp_force_recv(v->sck, s->data, 4); /* name len */
in_uint32_be(s, i);
if (i > 255 || i < 0)
{
error = 3;
}
else
{
g_tcp_force_recv(v->sck, v->mod_name, i);
v->mod_name[i] = 0;
}
/* should be connected */
}
if (error == 0)
{
/* SetPixelFormat */
init_stream(s, 8192);
out_uint8(s, 0);
out_uint8(s, 0);
out_uint8(s, 0);
out_uint8(s, 0);
init_stream(pixel_format, 8192);
if (v->mod_bpp == 8)
{
out_uint8(pixel_format, 8); /* bits per pixel */
out_uint8(pixel_format, 8); /* depth */
out_uint8(pixel_format, 0); /* big endian */
out_uint8(pixel_format, 0); /* true color flag */
out_uint16_be(pixel_format, 0); /* red max */
out_uint16_be(pixel_format, 0); /* green max */
out_uint16_be(pixel_format, 0); /* blue max */
out_uint8(pixel_format, 0); /* red shift */
out_uint8(pixel_format, 0); /* green shift */
out_uint8(pixel_format, 0); /* blue shift */
out_uint8s(pixel_format, 3); /* pad */
}
out_uint8a(s, pixel_format->data, 16);
g_tcp_force_send(v->sck, s->data, 20);
/* SetEncodings */
init_stream(s, 8192);
out_uint8(s, 2);
out_uint8(s, 0);
out_uint16_be(s, 3);
out_uint32_be(s, 0); /* raw */
out_uint32_be(s, 1); /* copy rect */
out_uint32_be(s, 0xffffff11); /* cursor */
g_tcp_force_send(v->sck, s->data, 4 + 3 * 4);
/* FrambufferUpdateRequest */
init_stream(s, 8192);
out_uint8(s, 3);
out_uint8(s, 0);
out_uint16_be(s, 0);
out_uint16_be(s, 0);
out_uint16_be(s, v->mod_width);
out_uint16_be(s, v->mod_height);
g_tcp_force_send(v->sck, s->data, 10);
}
if (error == 0)
{
v->server_error_popup(v, "hi", "Hi");
if (v->server_bpp != v->mod_bpp)
{
error = 4;
}
}
/* set almost null cursor */
g_memset(cursor_data, 0, 32 * (32 * 3));
g_memset(cursor_data + (32 * (32 * 3) - 1 * 32 * 3), 0xff, 9);
g_memset(cursor_data + (32 * (32 * 3) - 2 * 32 * 3), 0xff, 9);
g_memset(cursor_data + (32 * (32 * 3) - 3 * 32 * 3), 0xff, 9);
g_memset(cursor_mask, 0xff, 32 * (32 / 8));
v->server_set_cursor(v, 0, 0, cursor_data, cursor_mask);
free_stream(s);
free_stream(pixel_format);
return error;
}
/******************************************************************************/
int lib_mod_invalidate(struct vnc* v, int x, int y, int cx, int cy)
{
struct stream* s;
make_stream(s);
/* FrambufferUpdateRequest */
init_stream(s, 8192);
out_uint8(s, 3);
out_uint8(s, 0);
out_uint16_be(s, x);
out_uint16_be(s, y);
out_uint16_be(s, cx);
out_uint16_be(s, cy);
g_tcp_force_send(v->sck, s->data, 10);
free_stream(s);
return 0;
}
/******************************************************************************/
int lib_mod_end(struct vnc* v)
{
char text[256];
if (v->vnc_desktop != 0)
{
g_sprintf(text, vnc_stop_command, v->username, v->vnc_desktop);
g_system(text);
}
return 0;
}
/******************************************************************************/
int lib_mod_set_param(struct vnc* v, char* name, char* value)
{
if (g_strcmp(name, "username") == 0)
g_strncpy(v->username, value, 255);
else if (g_strcmp(name, "password") == 0)
g_strncpy(v->password, value, 255);
else if (g_strcmp(name, "ip") == 0)
g_strncpy(v->ip, value, 255);
else if (g_strcmp(name, "port") == 0)
g_strncpy(v->port, value, 255);
return 0;
}
/******************************************************************************/
int mod_init()
{
struct vnc* v;
v = (struct vnc*)g_malloc(sizeof(struct vnc), 1);
/* set client functions */
v->size = sizeof(struct vnc);
v->handle = (int)v;
v->mod_connect = lib_mod_connect;
v->mod_start = lib_mod_start;
v->mod_event = lib_mod_event;
v->mod_signal = lib_mod_signal;
v->mod_invalidate = lib_mod_invalidate;
v->mod_end = lib_mod_end;
v->mod_set_param = lib_mod_set_param;
return (int)v;
}
/******************************************************************************/
int mod_exit(struct vnc* v)
{
if (v == 0)
return 0;
g_tcp_close(v->sck);
g_free(v);
return 0;
}
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