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xrdp-proprietary/vnc/vnc.c

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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2004-2013
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* libvnc
*/
#include "vnc.h"
#include "log.h"
/******************************************************************************/
/* taken from vncauth.c */
void DEFAULT_CC
rfbEncryptBytes(char *bytes, char *passwd)
{
char key[12];
/* key is simply password padded with nulls */
g_memset(key, 0, sizeof(key));
g_strncpy(key, passwd, 8);
rfbDesKey((unsigned char *)key, EN0); /* 0, encrypt */
rfbDes((unsigned char *)bytes, (unsigned char *)bytes);
rfbDes((unsigned char *)(bytes + 8), (unsigned char *)(bytes + 8));
}
/******************************************************************************/
/* returns error */
int DEFAULT_CC
lib_recv(struct vnc *v, char *data, int len)
{
int rcvd;
if (v->sck_closed)
{
return 1;
}
while (len > 0)
{
rcvd = g_tcp_recv(v->sck, data, len, 0);
if (rcvd == -1)
{
if (g_tcp_last_error_would_block(v->sck))
{
if (v->server_is_term(v))
{
return 1;
}
g_tcp_can_recv(v->sck, 10);
}
else
{
log_message(LOG_LEVEL_DEBUG, "VNC lib_recv return 1");
return 1;
}
}
else if (rcvd == 0)
{
v->sck_closed = 1;
return 1;
}
else
{
data += rcvd;
len -= rcvd;
}
}
return 0;
}
/*****************************************************************************/
/* returns error */
int DEFAULT_CC
lib_send(struct vnc *v, char *data, int len)
{
int sent;
if (v->sck_closed)
{
return 1;
}
while (len > 0)
{
sent = g_tcp_send(v->sck, data, len, 0);
if (sent == -1)
{
if (g_tcp_last_error_would_block(v->sck))
{
if (v->server_is_term(v))
{
return 1;
}
g_tcp_can_send(v->sck, 10);
}
else
{
return 1;
}
}
else if (sent == 0)
{
v->sck_closed = 1;
return 1;
}
else
{
data += sent;
len -= sent;
}
}
return 0;
}
/******************************************************************************/
static int DEFAULT_CC
lib_process_channel_data(struct vnc *v, int chanid, int flags, int size,
struct stream *s, int total_size)
{
int type;
int status;
int length;
int index;
int format;
struct stream *out_s;
if (chanid == v->clip_chanid)
{
in_uint16_le(s, type);
in_uint16_le(s, status);
in_uint32_le(s, length);
//g_writeln("clip data type %d status %d length %d", type, status, length);
//g_hexdump(s->p, s->end - s->p);
switch (type)
{
case 2: /* CLIPRDR_FORMAT_ANNOUNCE */
make_stream(out_s);
init_stream(out_s, 8192);
out_uint16_le(out_s, 3);
out_uint16_le(out_s, 1);
out_uint32_le(out_s, 0);
out_uint8s(out_s, 4); /* pad */
s_mark_end(out_s);
length = (int)(out_s->end - out_s->data);
v->server_send_to_channel(v, v->clip_chanid, out_s->data, length, length, 3);
free_stream(out_s);
break;
case 3: /* CLIPRDR_FORMAT_ACK */
break;
case 4: /* CLIPRDR_DATA_REQUEST */
format = 0;
if (length >= 4)
{
in_uint32_le(s, format);
}
/* only support CF_TEXT and CF_UNICODETEXT */
if ((format != 1) && (format != 13))
{
break;
}
make_stream(out_s);
init_stream(out_s, 8192);
out_uint16_le(out_s, 5);
out_uint16_le(out_s, 1);
if (format == 13) /* CF_UNICODETEXT */
{
out_uint32_le(out_s, v->clip_data_size * 2 + 2);
for (index = 0; index < v->clip_data_size; index++)
{
out_uint8(out_s, v->clip_data[index]);
out_uint8(out_s, 0);
}
out_uint8s(out_s, 2);
}
else if (format == 1) /* CF_TEXT */
{
out_uint32_le(out_s, v->clip_data_size + 1);
for (index = 0; index < v->clip_data_size; index++)
{
out_uint8(out_s, v->clip_data[index]);
}
out_uint8s(out_s, 1);
}
out_uint8s(out_s, 4); /* pad */
s_mark_end(out_s);
length = (int)(out_s->end - out_s->data);
v->server_send_to_channel(v, v->clip_chanid, out_s->data, length,
length, 3);
free_stream(out_s);
break;
default:
{
log_message(LOG_LEVEL_DEBUG, "VNC clip information unhandled");
break;
}
}
}
else
{
log_message(LOG_LEVEL_DEBUG, "lib_process_channel_data: unknown chanid:",
"%d :(v->clip_chanid) %d", chanid, v->clip_chanid);
}
return 0;
}
/******************************************************************************/
int DEFAULT_CC
lib_mod_event(struct vnc *v, int msg, long param1, long param2,
long param3, long param4)
{
struct stream *s;
int key;
int error;
int x;
int y;
int cx;
int cy;
int size;
int total_size;
int chanid;
int flags;
char *data;
char text[256];
error = 0;
make_stream(s);
if (msg == 0x5555) /* channel data */
{
chanid = LOWORD(param1);
flags = HIWORD(param1);
size = (int)param2;
data = (char *)param3;
total_size = (int)param4;
if ((size >= 0) && (size <= (32 * 1024)) && (data != 0))
{
init_stream(s, size);
out_uint8a(s, data, size);
s_mark_end(s);
s->p = s->data;
error = lib_process_channel_data(v, chanid, flags, size, s, total_size);
}
else
{
error = 1;
}
}
else if ((msg >= 15) && (msg <= 16)) /* key events */
{
key = param2;
if (key > 0)
{
if (key == 65027) /* altgr */
{
if (v->shift_state)
{
/* fix for mstsc sending left control down with altgr */
init_stream(s, 8192);
out_uint8(s, 4);
out_uint8(s, 0); /* down flag */
out_uint8s(s, 2);
out_uint32_be(s, 65507); /* left control */
lib_send(v, s->data, 8);
}
}
init_stream(s, 8192);
out_uint8(s, 4);
out_uint8(s, msg == 15); /* down flag */
out_uint8s(s, 2);
out_uint32_be(s, key);
error = lib_send(v, s->data, 8);
if (key == 65507) /* left control */
{
v->shift_state = msg == 15;
}
}
}
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);
error = lib_send(v, s->data, 6);
}
else if (msg == 200) /* invalidate */
{
/* FrambufferUpdateRequest */
init_stream(s, 8192);
out_uint8(s, 3);
out_uint8(s, 0);
x = (param1 >> 16) & 0xffff;
out_uint16_be(s, x);
y = param1 & 0xffff;
out_uint16_be(s, y);
cx = (param2 >> 16) & 0xffff;
out_uint16_be(s, cx);
cy = param2 & 0xffff;
out_uint16_be(s, cy);
error = lib_send(v, s->data, 10);
}
free_stream(s);
return error;
}
//******************************************************************************
int DEFAULT_CC
get_pixel_safe(char *data, int x, int y, int width, int height, int bpp)
{
int start = 0;
int shift = 0;
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));
}
else if (bpp == 24 || bpp == 32)
{
return *(((unsigned int *)data) + (y * width + x));
}
else
{
log_message(LOG_LEVEL_ERROR, "error in get_pixel_safe bpp %d", bpp);
}
return 0;
}
/******************************************************************************/
void DEFAULT_CC
set_pixel_safe(char *data, int x, int y, int width, int height, int bpp,
int pixel)
{
int start = 0;
int shift = 0;
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;
}
else
{
log_message(LOG_LEVEL_ERROR, "error in set_pixel_safe bpp %d", bpp);
}
}
/******************************************************************************/
int DEFAULT_CC
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 == 15)
{
*r = ((pixel >> 7) & 0xf8) | ((pixel >> 12) & 0x7);
*g = ((pixel >> 2) & 0xf8) | ((pixel >> 8) & 0x7);
*b = ((pixel << 3) & 0xf8) | ((pixel >> 2) & 0x7);
}
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);
}
else if (bpp == 24 || bpp == 32)
{
*r = (pixel >> 16) & 0xff;
*g = (pixel >> 8) & 0xff;
*b = pixel & 0xff;
}
else
{
log_message(LOG_LEVEL_ERROR, "error in split_color bpp %d", bpp);
}
return 0;
}
/******************************************************************************/
int DEFAULT_CC
make_color(int r, int g, int b, int bpp)
{
if (bpp == 24)
{
return (r << 16) | (g << 8) | b;
}
else
{
log_message(LOG_LEVEL_ERROR, "error in make_color bpp %d", bpp);
}
return 0;
}
/******************************************************************************/
int DEFAULT_CC
lib_framebuffer_update(struct vnc *v)
{
char *data;
char *d1;
char *d2;
char cursor_data[32 * (32 * 3)];
char cursor_mask[32 * (32 / 8)];
char text[256];
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;
int data_size;
int need_size;
int error;
struct stream *s;
data_size = 0;
data = 0;
num_recs = 0;
Bpp = (v->mod_bpp + 7) / 8;
if (Bpp == 3)
{
Bpp = 4;
}
make_stream(s);
init_stream(s, 8192);
error = lib_recv(v, s->data, 3);
if (error == 0)
{
in_uint8s(s, 1);
in_uint16_be(s, num_recs);
error = v->server_begin_update(v);
}
for (i = 0; i < num_recs; i++)
{
if (error != 0)
{
break;
}
init_stream(s, 8192);
error = lib_recv(v, s->data, 12);
if (error == 0)
{
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 */
{
need_size = cx * cy * Bpp;
if (need_size > data_size)
{
g_free(data);
data = (char *)g_malloc(need_size, 0);
data_size = need_size;
}
error = lib_recv(v, data, need_size);
if (error == 0)
{
error = v->server_paint_rect(v, x, y, cx, cy, data, cx, cy, 0, 0);
}
}
else if (encoding == 1) /* copy rect */
{
init_stream(s, 8192);
error = lib_recv(v, s->data, 4);
if (error == 0)
{
in_uint16_be(s, srcx);
in_uint16_be(s, srcy);
error = 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));
j = cx * cy * Bpp;
k = ((cx + 7) / 8) * cy;
init_stream(s, j + k);
error = lib_recv(v, s->data, j + k);
if (error == 0)
{
in_uint8p(s, d1, j);
in_uint8p(s, d2, k);
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);
}
}
}
/* keep these in 32x32, vnc cursor can be alot bigger */
if (x > 31)
{
x = 31;
}
if (y > 31)
{
y = 31;
}
error = v->server_set_cursor(v, x, y, cursor_data, cursor_mask);
}
}
else if (encoding == 0xffffff21) /* desktop size */
{
v->mod_width = cx;
v->mod_height = cy;
error = v->server_reset(v, cx, cy, v->mod_bpp);
}
else
{
g_sprintf(text, "VNC error in lib_framebuffer_update encoding = %8.8x",
encoding);
v->server_msg(v, text, 1);
}
}
}
if (error == 0)
{
error = v->server_end_update(v);
}
g_free(data);
if (error == 0)
{
/* 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);
error = lib_send(v, s->data, 10);
}
free_stream(s);
return error;
}
/******************************************************************************/
int DEFAULT_CC
lib_clip_data(struct vnc *v)
{
struct stream *s;
struct stream *out_s;
int size;
int error;
g_free(v->clip_data);
v->clip_data = 0;
v->clip_data_size = 0;
make_stream(s);
init_stream(s, 8192);
error = lib_recv(v, s->data, 7);
if (error == 0)
{
in_uint8s(s, 3);
in_uint32_be(s, size);
v->clip_data = (char *)g_malloc(size, 0);
v->clip_data_size = size;
error = lib_recv(v, v->clip_data, size);
}
if (error == 0)
{
make_stream(out_s);
init_stream(out_s, 8192);
out_uint16_le(out_s, 2);
out_uint16_le(out_s, 0);
out_uint32_le(out_s, 0x90);
out_uint8(out_s, 0x0d);
out_uint8s(out_s, 35);
out_uint8(out_s, 0x10);
out_uint8s(out_s, 35);
out_uint8(out_s, 0x01);
out_uint8s(out_s, 35);
out_uint8(out_s, 0x07);
out_uint8s(out_s, 35);
out_uint8s(out_s, 4);
s_mark_end(out_s);
size = (int)(out_s->end - out_s->data);
error = v->server_send_to_channel(v, v->clip_chanid, out_s->data, size, size, 3);
free_stream(out_s);
}
free_stream(s);
return error;
}
/******************************************************************************/
int DEFAULT_CC
lib_palette_update(struct vnc *v)
{
struct stream *s;
int first_color;
int num_colors;
int i;
int r;
int g;
int b;
int error;
make_stream(s);
init_stream(s, 8192);
error = lib_recv(v, s->data, 5);
if (error == 0)
{
in_uint8s(s, 1);
in_uint16_be(s, first_color);
in_uint16_be(s, num_colors);
init_stream(s, 8192);
error = lib_recv(v, s->data, num_colors * 6);
}
if (error == 0)
{
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;
}
error = v->server_begin_update(v);
}
if (error == 0)
{
error = v->server_palette(v, v->palette);
}
if (error == 0)
{
error = v->server_end_update(v);
}
free_stream(s);
return error;
}
/******************************************************************************/
int DEFAULT_CC
lib_bell_trigger(struct vnc *v)
{
struct stream *s;
int error;
error = v->server_bell_trigger(v);
return error;
}
/******************************************************************************/
int DEFAULT_CC
lib_mod_signal(struct vnc *v)
{
char type;
int error;
char text[256];
error = lib_recv(v, &type, 1);
if (error == 0)
{
if (type == 0) /* framebuffer update */
{
error = lib_framebuffer_update(v);
}
else if (type == 1) /* palette */
{
error = lib_palette_update(v);
}
else if (type == 2) /* bell */
{
error = lib_bell_trigger(v);
}
else if (type == 3) /* clipboard */
{
log_message(LOG_LEVEL_DEBUG, "VNC got clip data");
error = lib_clip_data(v);
}
else
{
g_sprintf(text, "VNC unknown in lib_mod_signal %d", type);
v->server_msg(v, text, 1);
}
}
return error;
}
/******************************************************************************/
int DEFAULT_CC
lib_mod_start(struct vnc *v, int w, int h, int bpp)
{
v->server_begin_update(v);
v->server_set_fgcolor(v, 0);
v->server_fill_rect(v, 0, 0, w, h);
v->server_end_update(v);
v->server_width = w;
v->server_height = h;
v->server_bpp = bpp;
return 0;
}
/******************************************************************************/
static int APP_CC
lib_open_clip_channel(struct vnc *v)
{
char init_data[12] = { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
v->clip_chanid = v->server_get_channel_id(v, "cliprdr");
if (v->clip_chanid >= 0)
{
v->server_send_to_channel(v, v->clip_chanid, init_data, 12, 12, 3);
}
return 0;
}
/******************************************************************************/
/*
return error
*/
int DEFAULT_CC
lib_mod_connect(struct vnc *v)
{
char cursor_data[32 * (32 * 3)];
char cursor_mask[32 * (32 / 8)];
char con_port[256];
char text[256];
struct stream *s;
struct stream *pixel_format;
int error;
int i;
int check_sec_result;
v->server_msg(v, "VNC started connecting", 0);
check_sec_result = 1;
/* only support 8 and 16 bpp connections from rdp client */
if ((v->server_bpp != 8) && (v->server_bpp != 15) &&
(v->server_bpp != 16) && (v->server_bpp != 24))
{
v->server_msg(v, "VNC error - only supporting 8, 15, 16 and 24 bpp rdp "
"connections", 0);
return 1;
}
if (g_strcmp(v->ip, "") == 0)
{
v->server_msg(v, "VNC error - no ip set", 0);
return 1;
}
make_stream(s);
g_sprintf(con_port, "%s", v->port);
make_stream(pixel_format);
v->sck = g_tcp_socket();
if (v->sck < 0)
{
v->server_msg(v, "VNC error: socket create error, g_tcp_socket() failed", 0);
free_stream(s);
free_stream(pixel_format);
return 1;
}
v->sck_obj = g_create_wait_obj_from_socket(v->sck, 0);
v->sck_closed = 0;
g_sprintf(text, "VNC connecting to %s %s", v->ip, con_port);
v->server_msg(v, text, 0);
error = g_tcp_connect(v->sck, v->ip, con_port);
if (error == 0)
{
v->server_msg(v, "VNC tcp connected", 0);
g_tcp_set_non_blocking(v->sck);
g_tcp_set_no_delay(v->sck);
/* protocal version */
init_stream(s, 8192);
error = lib_recv(v, s->data, 12);
if (error == 0)
{
error = lib_send(v, "RFB 003.003\n", 12);
}
/* sec type */
if (error == 0)
{
init_stream(s, 8192);
error = lib_recv(v, s->data, 4);
}
if (error == 0)
{
in_uint32_be(s, i);
g_sprintf(text, "VNC security level is %d (1 = none, 2 = standard)", i);
v->server_msg(v, text, 0);
if (i == 1) /* none */
{
check_sec_result = 0;
}
else if (i == 2) /* dec the password and the server random */
{
init_stream(s, 8192);
error = lib_recv(v, s->data, 16);
if (error == 0)
{
rfbEncryptBytes(s->data, v->password);
error = lib_send(v, s->data, 16);
check_sec_result = 1; // not needed
}
}
else if (i == 0)
{
log_message(LOG_LEVEL_DEBUG, "VNC Server will disconnect");
error = 1;
}
else
{
log_message(LOG_LEVEL_DEBUG, "VNC unsupported security level");
error = 1;
}
}
}
if (error != 0)
{
log_message(LOG_LEVEL_DEBUG, "VNC Error after security negotiation");
}
if (error == 0 && check_sec_result)
{
/* sec result */
init_stream(s, 8192);
error = lib_recv(v, s->data, 4);
if (error == 0)
{
in_uint32_be(s, i);
if (i != 0)
{
v->server_msg(v, "VNC password failed", 0);
error = 2;
}
else
{
v->server_msg(v, "VNC password ok", 0);
}
}
}
if (error == 0)
{
v->server_msg(v, "VNC sending share flag", 0);
init_stream(s, 8192);
s->data[0] = 1;
error = lib_send(v, s->data, 1); /* share flag */
}
else
{
log_message(LOG_LEVEL_DEBUG, "VNC error before sending share flag");
}
if (error == 0)
{
v->server_msg(v, "VNC receiving server init", 0);
error = lib_recv(v, s->data, 4); /* server init */
}
else
{
log_message(LOG_LEVEL_DEBUG, "VNC error before receiving server init");
}
if (error == 0)
{
in_uint16_be(s, v->mod_width);
in_uint16_be(s, v->mod_height);
init_stream(pixel_format, 8192);
v->server_msg(v, "VNC receiving pixel format", 0);
error = lib_recv(v, pixel_format->data, 16);
}
else
{
log_message(LOG_LEVEL_DEBUG, "VNC error before receiving pixel format");
}
if (error == 0)
{
v->mod_bpp = v->server_bpp;
init_stream(s, 8192);
v->server_msg(v, "VNC receiving name length", 0);
error = lib_recv(v, s->data, 4); /* name len */
}
else
{
log_message(LOG_LEVEL_DEBUG, "VNC error before receiving name length");
}
if (error == 0)
{
in_uint32_be(s, i);
if (i > 255 || i < 0)
{
error = 3;
}
else
{
v->server_msg(v, "VNC receiving name", 0);
error = lib_recv(v, v->mod_name, i);
v->mod_name[i] = 0;
}
}
else
{
log_message(LOG_LEVEL_DEBUG, "VNC error before receiving name");
}
/* 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 */
#if defined(B_ENDIAN)
out_uint8(pixel_format, 1); /* big endian */
#else
out_uint8(pixel_format, 0); /* big endian */
#endif
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 */
}
else if (v->mod_bpp == 15)
{
out_uint8(pixel_format, 16); /* bits per pixel */
out_uint8(pixel_format, 15); /* depth */
#if defined(B_ENDIAN)
out_uint8(pixel_format, 1); /* big endian */
#else
out_uint8(pixel_format, 0); /* big endian */
#endif
out_uint8(pixel_format, 1); /* true color flag */
out_uint16_be(pixel_format, 31); /* red max */
out_uint16_be(pixel_format, 31); /* green max */
out_uint16_be(pixel_format, 31); /* blue max */
out_uint8(pixel_format, 10); /* red shift */
out_uint8(pixel_format, 5); /* green shift */
out_uint8(pixel_format, 0); /* blue shift */
out_uint8s(pixel_format, 3); /* pad */
}
else if (v->mod_bpp == 16)
{
out_uint8(pixel_format, 16); /* bits per pixel */
out_uint8(pixel_format, 16); /* depth */
#if defined(B_ENDIAN)
out_uint8(pixel_format, 1); /* big endian */
#else
out_uint8(pixel_format, 0); /* big endian */
#endif
out_uint8(pixel_format, 1); /* true color flag */
out_uint16_be(pixel_format, 31); /* red max */
out_uint16_be(pixel_format, 63); /* green max */
out_uint16_be(pixel_format, 31); /* blue max */
out_uint8(pixel_format, 11); /* red shift */
out_uint8(pixel_format, 5); /* green shift */
out_uint8(pixel_format, 0); /* blue shift */
out_uint8s(pixel_format, 3); /* pad */
}
else if (v->mod_bpp == 24)
{
out_uint8(pixel_format, 32); /* bits per pixel */
out_uint8(pixel_format, 24); /* depth */
#if defined(B_ENDIAN)
out_uint8(pixel_format, 1); /* big endian */
#else
out_uint8(pixel_format, 0); /* big endian */
#endif
out_uint8(pixel_format, 1); /* true color flag */
out_uint16_be(pixel_format, 255); /* red max */
out_uint16_be(pixel_format, 255); /* green max */
out_uint16_be(pixel_format, 255); /* blue max */
out_uint8(pixel_format, 16); /* red shift */
out_uint8(pixel_format, 8); /* green shift */
out_uint8(pixel_format, 0); /* blue shift */
out_uint8s(pixel_format, 3); /* pad */
}
out_uint8a(s, pixel_format->data, 16);
v->server_msg(v, "VNC sending pixel format", 0);
error = lib_send(v, s->data, 20);
}
if (error == 0)
{
/* SetEncodings */
init_stream(s, 8192);
out_uint8(s, 2);
out_uint8(s, 0);
out_uint16_be(s, 4);
out_uint32_be(s, 0); /* raw */
out_uint32_be(s, 1); /* copy rect */
out_uint32_be(s, 0xffffff11); /* cursor */
out_uint32_be(s, 0xffffff21); /* desktop size */
v->server_msg(v, "VNC sending encodings", 0);
error = lib_send(v, s->data, 4 + 4 * 4);
}
if (error == 0)
{
error = v->server_reset(v, v->mod_width, v->mod_height, v->mod_bpp);
}
if (error == 0)
{
/* 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);
v->server_msg(v, "VNC sending framebuffer update request", 0);
error = lib_send(v, s->data, 10);
}
if (error == 0)
{
if (v->server_bpp != v->mod_bpp)
{
v->server_msg(v, "VNC error - server bpp and client bpp do not match", 0);
error = 1;
}
}
if (error == 0)
{
/* set almost null cursor, this is the little dot 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_msg(v, "VNC sending cursor", 0);
error = v->server_set_cursor(v, 3, 3, cursor_data, cursor_mask);
}
free_stream(s);
free_stream(pixel_format);
if (error == 0)
{
v->server_msg(v, "VNC connection complete, connected ok", 0);
lib_open_clip_channel(v);
}
else
{
v->server_msg(v, "VNC error - problem connecting", 0);
}
return error;
}
/******************************************************************************/
int DEFAULT_CC
lib_mod_end(struct vnc *v)
{
if (v->vnc_desktop != 0)
{
}
g_free(v->clip_data);
v->clip_data = 0;
v->clip_data_size = 0;
return 0;
}
/******************************************************************************/
int DEFAULT_CC
lib_mod_set_param(struct vnc *v, char *name, char *value)
{
if (g_strcasecmp(name, "username") == 0)
{
g_strncpy(v->username, value, 255);
}
else if (g_strcasecmp(name, "password") == 0)
{
g_strncpy(v->password, value, 255);
}
else if (g_strcasecmp(name, "ip") == 0)
{
g_strncpy(v->ip, value, 255);
}
else if (g_strcasecmp(name, "port") == 0)
{
g_strncpy(v->port, value, 255);
}
else if (g_strcasecmp(name, "keylayout") == 0)
{
v->keylayout = g_atoi(value);
}
return 0;
}
/******************************************************************************/
/* return error */
int DEFAULT_CC
lib_mod_get_wait_objs(struct vnc *v, tbus *read_objs, int *rcount,
tbus *write_objs, int *wcount, int *timeout)
{
int i;
i = *rcount;
if (v != 0)
{
if (v->sck_obj != 0)
{
read_objs[i++] = v->sck_obj;
}
}
*rcount = i;
return 0;
}
/******************************************************************************/
/* return error */
int DEFAULT_CC
lib_mod_check_wait_objs(struct vnc *v)
{
int rv;
rv = 0;
if (v != 0)
{
if (v->sck_obj != 0)
{
if (g_is_wait_obj_set(v->sck_obj))
{
rv = lib_mod_signal(v);
}
}
}
return rv;
}
/******************************************************************************/
struct vnc *EXPORT_CC
mod_init(void)
{
struct vnc *v;
v = (struct vnc *)g_malloc(sizeof(struct vnc), 1);
/* set client functions */
v->size = sizeof(struct vnc);
v->version = CURRENT_MOD_VER;
v->handle = (long)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_end = lib_mod_end;
v->mod_set_param = lib_mod_set_param;
v->mod_get_wait_objs = lib_mod_get_wait_objs;
v->mod_check_wait_objs = lib_mod_check_wait_objs;
return v;
}
/******************************************************************************/
int EXPORT_CC
mod_exit(struct vnc *v)
{
log_message(LOG_LEVEL_DEBUG, "VNC mod_exit");
if (v == 0)
{
return 0;
}
g_delete_wait_obj_from_socket(v->sck_obj);
g_tcp_close(v->sck);
g_free(v);
return 0;
}
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