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added xrdp_iso.c

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jsorg71 2004-07-15 03:19:29 +00:00
parent 8958c95781
commit b7060e8a4a
1 changed files with 147 additions and 0 deletions
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147
xrdp/xrdp_iso.c Normal file
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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.
Copyright (C) Jay Sorg 2004
iso layer
*/
#include "xrdp.h"
/*****************************************************************************/
struct xrdp_iso* xrdp_iso_create(struct xrdp_mcs* owner)
{
struct xrdp_iso* self;
self = (struct xrdp_iso*)g_malloc(sizeof(struct xrdp_iso), 1);
self->owner = owner;
self->in_s = owner->in_s;
self->out_s = owner->out_s;
self->tcp_layer = xrdp_tcp_create(self);
return self;
}
/*****************************************************************************/
void xrdp_iso_delete(struct xrdp_iso* self)
{
xrdp_tcp_delete(self->tcp_layer);
g_free(self);
}
/*****************************************************************************/
/* returns error */
int xrdp_iso_recv_msg(struct xrdp_iso* self, int* code)
{
int ver;
int len;
*code = 0;
if (xrdp_tcp_recv(self->tcp_layer, 4) != 0)
return 1;
in_uint8(self->in_s, ver);
if (ver != 3)
return 1;
in_uint8s(self->in_s, 1);
in_uint16_be(self->in_s, len);
if (xrdp_tcp_recv(self->tcp_layer, len - 4) != 0)
return 1;
in_uint8s(self->in_s, 1);
in_uint8(self->in_s, *code);
if (*code == ISO_PDU_DT)
{
in_uint8s(self->in_s, 1);
}
else
{
in_uint8s(self->in_s, 5);
}
return 0;
}
/*****************************************************************************/
/* returns error */
int xrdp_iso_recv(struct xrdp_iso* self)
{
int code;
if (xrdp_iso_recv_msg(self, &code) != 0)
return 1;
if (code != ISO_PDU_DT)
return 1;
return 0;
}
/*****************************************************************************/
int xrdp_iso_send_msg(struct xrdp_iso* self, int code)
{
if (xrdp_tcp_init(self->tcp_layer, 11) != 0)
return 1;
out_uint8(self->out_s, 3);
out_uint8(self->out_s, 0);
out_uint16_be(self->out_s, 11); /* length */
out_uint8(self->out_s, 8);
out_uint8(self->out_s, code);
out_uint16(self->out_s, 0);
out_uint16(self->out_s, 0);
out_uint8(self->out_s, 0);
s_mark_end(self->out_s);
if (xrdp_tcp_send(self->tcp_layer) != 0)
return 1;
return 0;
}
/*****************************************************************************/
/* returns error */
int xrdp_iso_incoming(struct xrdp_iso* self)
{
int code;
if (xrdp_iso_recv_msg(self, &code) != 0)
return 1;
if (code != ISO_PDU_CR)
return 1;
if (xrdp_iso_send_msg(self, ISO_PDU_CC) != 0)
return 1;
return 0;
}
/*****************************************************************************/
/* returns error */
int xrdp_iso_init(struct xrdp_iso* self, int len)
{
xrdp_tcp_init(self->tcp_layer, len + 7);
s_push_layer(self->out_s, iso_hdr, 7);
return 0;
}
/*****************************************************************************/
/* returns error */
int xrdp_iso_send(struct xrdp_iso* self)
{
int len;
s_pop_layer(self->out_s, iso_hdr);
len = self->out_s->end - self->out_s->p;
out_uint8(self->out_s, 3);
out_uint8(self->out_s, 0);
out_uint16_be(self->out_s, len);
out_uint8(self->out_s, 2);
out_uint8(self->out_s, ISO_PDU_DT);
out_uint8(self->out_s, 0x80);
if (xrdp_tcp_send(self->tcp_layer) != 0)
return 1;
return 0;
}