2012-09-20 07:51:34 +04:00
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/**
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* xrdp: A Remote Desktop Protocol server.
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*
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* Copyright (C) Jay Sorg 2004-2012
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* librdp iso layer
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*/
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2005-10-12 05:37:16 +04:00
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#include "rdp.h"
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/*****************************************************************************/
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2012-09-20 07:51:34 +04:00
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struct rdp_iso *APP_CC
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rdp_iso_create(struct rdp_mcs *owner)
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2005-10-12 05:37:16 +04:00
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{
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2012-09-20 07:51:34 +04:00
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struct rdp_iso *self;
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2005-10-12 05:37:16 +04:00
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2012-09-20 07:51:34 +04:00
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self = (struct rdp_iso *)g_malloc(sizeof(struct rdp_iso), 1);
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self->mcs_layer = owner;
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self->tcp_layer = rdp_tcp_create(self);
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return self;
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2005-10-12 05:37:16 +04:00
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}
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/*****************************************************************************/
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void APP_CC
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2012-09-20 07:51:34 +04:00
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rdp_iso_delete(struct rdp_iso *self)
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2005-10-12 05:37:16 +04:00
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{
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2012-09-20 07:51:34 +04:00
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if (self == 0)
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{
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return;
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}
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rdp_tcp_delete(self->tcp_layer);
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g_free(self);
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2005-10-12 05:37:16 +04:00
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}
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/*****************************************************************************/
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/* returns error */
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static int APP_CC
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2012-09-20 07:51:34 +04:00
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rdp_iso_recv_msg(struct rdp_iso *self, struct stream *s, int *code)
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2005-10-12 05:37:16 +04:00
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{
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2012-09-20 07:51:34 +04:00
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int ver;
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int len;
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*code = 0;
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if (rdp_tcp_recv(self->tcp_layer, s, 4) != 0)
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{
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DEBUG((" out rdp_iso_recv_msg error rdp_tcp_recv 1 failed"));
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return 1;
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}
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in_uint8(s, ver);
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if (ver != 3)
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{
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DEBUG((" out rdp_iso_recv_msg error ver != 3"));
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return 1;
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}
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in_uint8s(s, 1);
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in_uint16_be(s, len);
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if (rdp_tcp_recv(self->tcp_layer, s, len - 4) != 0)
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{
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DEBUG((" out rdp_iso_recv_msg error rdp_tcp_recv 2 failed"));
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return 1;
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}
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2005-10-12 05:37:16 +04:00
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in_uint8s(s, 1);
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2012-09-20 07:51:34 +04:00
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in_uint8(s, *code);
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if (*code == ISO_PDU_DT)
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{
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in_uint8s(s, 1);
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}
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else
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{
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in_uint8s(s, 5);
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}
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return 0;
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2005-10-12 05:37:16 +04:00
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}
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/*****************************************************************************/
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static int APP_CC
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2012-09-20 07:51:34 +04:00
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rdp_iso_send_msg(struct rdp_iso *self, struct stream *s, int code)
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2005-10-12 05:37:16 +04:00
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{
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2012-09-20 07:51:34 +04:00
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if (rdp_tcp_init(self->tcp_layer, s) != 0)
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{
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return 1;
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}
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out_uint8(s, 3);
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out_uint8(s, 0);
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out_uint16_be(s, 11); /* length */
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out_uint8(s, 6);
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out_uint8(s, code);
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out_uint16_le(s, 0);
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out_uint16_le(s, 0);
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out_uint8(s, 0);
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s_mark_end(s);
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if (rdp_tcp_send(self->tcp_layer, s) != 0)
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{
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return 1;
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}
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return 0;
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2005-10-12 05:37:16 +04:00
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}
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/*****************************************************************************/
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/* returns error */
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int APP_CC
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2012-09-20 07:51:34 +04:00
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rdp_iso_recv(struct rdp_iso *self, struct stream *s)
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2005-10-12 05:37:16 +04:00
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{
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2012-09-20 07:51:34 +04:00
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int code;
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if (rdp_iso_recv_msg(self, s, &code) != 0)
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{
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return 1;
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}
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if (code != ISO_PDU_DT)
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{
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return 1;
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}
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return 0;
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2005-10-12 05:37:16 +04:00
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}
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/*****************************************************************************/
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/* returns error */
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int APP_CC
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2012-09-20 07:51:34 +04:00
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rdp_iso_init(struct rdp_iso *self, struct stream *s)
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2005-10-12 05:37:16 +04:00
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{
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2012-09-20 07:51:34 +04:00
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rdp_tcp_init(self->tcp_layer, s);
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s_push_layer(s, iso_hdr, 7);
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return 0;
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2005-10-12 05:37:16 +04:00
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}
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/*****************************************************************************/
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/* returns error */
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int APP_CC
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2012-09-20 07:51:34 +04:00
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rdp_iso_send(struct rdp_iso *self, struct stream *s)
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2005-10-12 05:37:16 +04:00
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{
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2012-09-20 07:51:34 +04:00
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int len;
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s_pop_layer(s, iso_hdr);
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len = s->end - s->p;
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out_uint8(s, 3);
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out_uint8(s, 0);
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out_uint16_be(s, len);
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out_uint8(s, 2);
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out_uint8(s, ISO_PDU_DT);
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out_uint8(s, 0x80);
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if (rdp_tcp_send(self->tcp_layer, s) != 0)
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{
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return 1;
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}
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return 0;
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2005-10-12 05:37:16 +04:00
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}
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/*****************************************************************************/
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/* returns error */
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int APP_CC
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2012-09-20 07:51:34 +04:00
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rdp_iso_connect(struct rdp_iso *self, char *ip, char *port)
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2005-10-12 05:37:16 +04:00
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{
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2012-09-20 07:51:34 +04:00
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int code;
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struct stream *s;
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DEBUG((" in rdp_iso_connect"));
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make_stream(s);
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init_stream(s, 8192);
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if (rdp_tcp_connect(self->tcp_layer, ip, port) != 0)
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{
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free_stream(s);
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DEBUG((" out rdp_iso_connect error rdp_tcp_connect failed"));
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return 1;
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}
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if (rdp_iso_send_msg(self, s, ISO_PDU_CR) != 0)
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{
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free_stream(s);
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rdp_tcp_disconnect(self->tcp_layer);
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DEBUG((" out rdp_iso_connect error rdp_iso_send_msg failed"));
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return 1;
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}
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init_stream(s, 8192);
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if (rdp_iso_recv_msg(self, s, &code) != 0)
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{
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free_stream(s);
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rdp_tcp_disconnect(self->tcp_layer);
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DEBUG((" out rdp_iso_connect error rdp_iso_recv_msg failed"));
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return 1;
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}
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if (code != ISO_PDU_CC)
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{
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free_stream(s);
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rdp_tcp_disconnect(self->tcp_layer);
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DEBUG((" out rdp_iso_connect error code != ISO_PDU_CC"));
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return 1;
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}
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2005-10-12 05:37:16 +04:00
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free_stream(s);
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2012-09-20 07:51:34 +04:00
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DEBUG((" out rdp_iso_connect"));
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return 0;
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2005-11-03 05:01:50 +03:00
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}
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/*****************************************************************************/
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int APP_CC
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2012-09-20 07:51:34 +04:00
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rdp_iso_disconnect(struct rdp_iso *self)
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2005-11-03 05:01:50 +03:00
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{
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2012-09-20 07:51:34 +04:00
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struct stream *s;
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make_stream(s);
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init_stream(s, 8192);
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rdp_iso_send_msg(self, s, ISO_PDU_DR);
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rdp_tcp_disconnect(self->tcp_layer);
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free_stream(s);
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return 0;
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2005-10-12 05:37:16 +04:00
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}
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