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xrdp-proprietary/xup/xup.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 2005-2006
libxup main file
*/
#include "xup.h"
/******************************************************************************/
/* returns error */
int DEFAULT_CC
lib_recv(struct mod* mod, char* data, int len)
{
int rcvd;
if (mod->sck_closed)
{
return 1;
}
while (len > 0)
{
rcvd = g_tcp_recv(mod->sck, data, len, 0);
if (rcvd == -1)
{
if (g_tcp_last_error_would_block(mod->sck))
{
if (mod->server_is_term(mod))
{
return 1;
}
g_sleep(1);
}
else
{
return 1;
}
}
else if (rcvd == 0)
{
mod->sck_closed = 1;
return 1;
}
else
{
data += rcvd;
len -= rcvd;
}
}
return 0;
}
/*****************************************************************************/
/* returns error */
int DEFAULT_CC
lib_send(struct mod* mod, char* data, int len)
{
int sent;
if (mod->sck_closed)
{
return 1;
}
while (len > 0)
{
sent = g_tcp_send(mod->sck, data, len, 0);
if (sent == -1)
{
if (g_tcp_last_error_would_block(mod->sck))
{
if (mod->server_is_term(mod))
{
return 1;
}
g_sleep(1);
}
else
{
return 1;
}
}
else if (sent == 0)
{
mod->sck_closed = 1;
return 1;
}
else
{
data += sent;
len -= sent;
}
}
return 0;
}
/******************************************************************************/
/* return error */
int DEFAULT_CC
lib_mod_start(struct mod* mod, int w, int h, int bpp)
{
DEBUG(("in lib_mod_start\r\n"));
mod->width = w;
mod->height = h;
mod->bpp = bpp;
DEBUG(("out lib_mod_start\r\n"));
return 0;
}
/******************************************************************************/
/* return error */
int DEFAULT_CC
lib_mod_connect(struct mod* mod)
{
int error;
int len;
int display;
int i;
int version;
int size;
int code;
int ok;
struct stream* s;
char con_port[256];
DEBUG(("in lib_mod_connect\r\n"));
/* clear screen */
mod->server_begin_update(mod);
mod->server_set_fgcolor(mod, 0);
mod->server_fill_rect(mod, 0, 0, mod->width, mod->height);
mod->server_end_update(mod);
mod->server_msg(mod, "started connecting", 0);
/* only support 8 and 16 bpp connections from rdp client */
if (mod->bpp != 8 && mod->bpp != 16)
{
mod->server_msg(mod,
"error - only supporting 8 and 16 bpp rdp connections", 0);
return 1;
}
if (g_strncmp(mod->ip, "", 1) == 0)
{
mod->server_msg(mod, "error - no ip set", 0);
return 1;
}
make_stream(s);
/* if port = -1, use sesman to get port / desktop */
if (g_strncmp(mod->port, "-1", 2) == 0)
{
display = 0;
error = 0;
init_stream(s, 8192);
mod->sck = g_tcp_socket();
mod->sck_closed = 0;
mod->server_msg(mod, "connecting to sesman", 0);
if (g_tcp_connect(mod->sck, mod->ip, "3350") == 0)
{
g_tcp_set_non_blocking(mod->sck);
g_tcp_set_no_delay(mod->sck);
s_push_layer(s, channel_hdr, 8);
out_uint16_be(s, 10); // code
i = g_strlen(mod->username);
out_uint16_be(s, i);
out_uint8a(s, mod->username, i);
i = g_strlen(mod->password);
out_uint16_be(s, i);
out_uint8a(s, mod->password, i);
out_uint16_be(s, mod->width);
out_uint16_be(s, mod->height);
out_uint16_be(s, mod->bpp);
s_mark_end(s);
s_pop_layer(s, channel_hdr);
out_uint32_be(s, 0); // version
out_uint32_be(s, s->end - s->data); // size
mod->server_msg(mod, "sending login info to sesman", 0);
error = lib_send(mod, s->data, s->end - s->data);
if (error == 0)
{
init_stream(s, 8192);
mod->server_msg(mod, "receiving sesman header", 0);
error = lib_recv(mod, s->data, 8);
}
if (error == 0)
{
in_uint32_be(s, version);
in_uint32_be(s, size);
init_stream(s, 8192);
mod->server_msg(mod, "receiving sesman data", 0);
error = lib_recv(mod, s->data, size - 8);
}
if (error == 0)
{
if (version == 0)
{
in_uint16_be(s, code);
if (code == 3)
{
in_uint16_be(s, ok);
if (ok)
{
in_uint16_be(s, display);
}
else
{
in_uint8s(s, 2);
mod->server_msg(mod, "error - sesman returned no", 0);
}
}
}
}
}
else
{
mod->server_msg(mod, "error - connecting to sesman", 0);
}
g_tcp_close(mod->sck);
if (error != 0 || display == 0)
{
mod->server_msg(mod, "error - connection failed", 0);
free_stream(s);
return 1;
}
mod->server_msg(mod, "sesman started a session", 0);
g_sprintf(con_port, "%d", 6200 + display);
}
else
{
g_sprintf(con_port, "%s", mod->port);
}
mod->sck = g_tcp_socket();
mod->sck_closed = 0;
error = g_tcp_connect(mod->sck, mod->ip, con_port);
if (error == 0)
{
g_tcp_set_non_blocking(mod->sck);
g_tcp_set_no_delay(mod->sck);
}
if (error == 0)
{
init_stream(s, 8192);
s_push_layer(s, iso_hdr, 4);
out_uint16_le(s, 103);
out_uint32_le(s, 200);
out_uint32_le(s, 0);
out_uint32_le(s, 0);
out_uint32_le(s, mod->width);
out_uint32_le(s, mod->height);
s_mark_end(s);
len = s->end - s->data;
s_pop_layer(s, iso_hdr);
out_uint32_le(s, len);
lib_send(mod, s->data, len);
}
free_stream(s);
DEBUG(("out lib_mod_connect error\r\n"));
if (error != 0)
{
mod->server_msg(mod, "some problem", 0);
return 1;
}
return 0;
}
/******************************************************************************/
/* return error */
int DEFAULT_CC
lib_mod_event(struct mod* mod, int msg, long param1, long param2,
long param3, long param4)
{
struct stream* s;
int len;
int rv;
DEBUG(("in lib_mod_event\r\n"));
make_stream(s);
init_stream(s, 8192);
s_push_layer(s, iso_hdr, 4);
out_uint16_le(s, 103);
out_uint32_le(s, msg);
out_uint32_le(s, param1);
out_uint32_le(s, param2);
out_uint32_le(s, param3);
out_uint32_le(s, param4);
s_mark_end(s);
len = s->end - s->data;
s_pop_layer(s, iso_hdr);
out_uint32_le(s, len);
rv = lib_send(mod, s->data, len);
free_stream(s);
DEBUG(("out lib_mod_event\r\n"));
return rv;
}
/******************************************************************************/
/* return error */
int DEFAULT_CC
lib_mod_signal(struct mod* mod)
{
struct stream* s;
int num_orders;
int index;
int rv;
int len;
int type;
int x;
int y;
int cx;
int cy;
int fgcolor;
int opcode;
int width;
int height;
int srcx;
int srcy;
int len_bmpdata;
int style;
int x1;
int y1;
int x2;
int y2;
char* bmpdata;
DEBUG(("in lib_mod_signal\r\n"));
make_stream(s);
init_stream(s, 8192);
rv = lib_recv(mod, s->data, 8);
if (rv == 0)
{
in_uint16_le(s, type);
in_uint16_le(s, num_orders);
in_uint32_le(s, len);
if (type == 1)
{
init_stream(s, len);
rv = lib_recv(mod, s->data, len);
if (rv == 0)
{
for (index = 0; index < num_orders; index++)
{
in_uint16_le(s, type);
switch (type)
{
case 1: /* server_begin_update */
rv = mod->server_begin_update(mod);
break;
case 2: /* server_end_update */
rv = mod->server_end_update(mod);
break;
case 3: /* server_fill_rect */
in_sint16_le(s, x);
in_sint16_le(s, y);
in_uint16_le(s, cx);
in_uint16_le(s, cy);
rv = mod->server_fill_rect(mod, x, y, cx, cy);
break;
case 4: /* server_screen_blt */
in_sint16_le(s, x);
in_sint16_le(s, y);
in_uint16_le(s, cx);
in_uint16_le(s, cy);
in_sint16_le(s, srcx);
in_sint16_le(s, srcy);
rv = mod->server_screen_blt(mod, x, y, cx, cy, srcx, srcy);
break;
case 5: /* server_paint_rect */
in_sint16_le(s, x);
in_sint16_le(s, y);
in_uint16_le(s, cx);
in_uint16_le(s, cy);
in_uint32_le(s, len_bmpdata);
in_uint8p(s, bmpdata, len_bmpdata);
in_uint16_le(s, width);
in_uint16_le(s, height);
in_sint16_le(s, srcx);
in_sint16_le(s, srcy);
rv = mod->server_paint_rect(mod, x, y, cx, cy,
bmpdata, width, height,
srcx, srcy);
break;
case 10: /* server_set_clip */
in_sint16_le(s, x);
in_sint16_le(s, y);
in_uint16_le(s, cx);
in_uint16_le(s, cy);
rv = mod->server_set_clip(mod, x, y, cx, cy);
break;
case 11: /* server_reset_clip */
rv = mod->server_reset_clip(mod);
break;
case 12: /* server_set_fgcolor */
in_uint32_le(s, fgcolor);
rv = mod->server_set_fgcolor(mod, fgcolor);
break;
case 14:
in_uint16_le(s, opcode);
rv = mod->server_set_opcode(mod, opcode);
break;
case 17:
in_uint16_le(s, style);
in_uint16_le(s, width);
rv = mod->server_set_pen(mod, style, width);
break;
case 18:
in_sint16_le(s, x1);
in_sint16_le(s, y1);
in_sint16_le(s, x2);
in_sint16_le(s, y2);
rv = mod->server_draw_line(mod, x1, y1, x2, y2);
break;
default:
rv = 1;
break;
}
if (rv != 0)
{
break;
}
}
}
}
}
free_stream(s);
DEBUG(("out lib_mod_signal\r\n"));
return rv;
}
/******************************************************************************/
/* return error */
int DEFAULT_CC
lib_mod_end(struct mod* mod)
{
return 0;
}
/******************************************************************************/
/* return error */
int DEFAULT_CC
lib_mod_set_param(struct mod* mod, char* name, char* value)
{
if (g_strncasecmp(name, "username", 8) == 0)
{
g_strncpy(mod->username, value, 255);
}
else if (g_strncasecmp(name, "password", 8) == 0)
{
g_strncpy(mod->password, value, 255);
}
else if (g_strncasecmp(name, "ip", 2) == 0)
{
g_strncpy(mod->ip, value, 255);
}
else if (g_strncasecmp(name, "port", 4) == 0)
{
g_strncpy(mod->port, value, 255);
}
return 0;
}
/******************************************************************************/
struct mod* EXPORT_CC
mod_init(void)
{
struct mod* mod;
DEBUG(("in mod_init\r\n"));
mod = (struct mod*)g_malloc(sizeof(struct mod), 1);
mod->size = sizeof(struct mod);
mod->handle = (long)mod;
mod->mod_connect = lib_mod_connect;
mod->mod_start = lib_mod_start;
mod->mod_event = lib_mod_event;
mod->mod_signal = lib_mod_signal;
mod->mod_end = lib_mod_end;
mod->mod_set_param = lib_mod_set_param;
DEBUG(("out mod_init\r\n"));
return mod;
}
/******************************************************************************/
int EXPORT_CC
mod_exit(struct mod* mod)
{
DEBUG(("in mod_exit\r\n"));
if (mod == 0)
{
return 0;
}
g_tcp_close(mod->sck);
g_free(mod);
DEBUG(("out mod_exit\r\n"));
return 0;
}
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