bba65b3592
Unify logging in libxrdp
868 lines
23 KiB
C
868 lines
23 KiB
C
/**
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* xrdp: A Remote Desktop Protocol server.
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*
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* Copyright (C) Jay Sorg 2006-2013
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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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* channel layer
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*/
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#if defined(HAVE_CONFIG_H)
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#include <config_ac.h>
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#endif
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#include "libxrdp.h"
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#include "string_calls.h"
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/* todo, move these to constants.h */
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//#define CHANNEL_CHUNK_LENGTH 1600 /* todo, why is this so small? */
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#define CHANNEL_CHUNK_LENGTH 8192
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#define CHANNEL_FLAG_FIRST 0x01
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#define CHANNEL_FLAG_LAST 0x02
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#define CHANNEL_FLAG_SHOW_PROTOCOL 0x10
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#define CMD_DVC_OPEN_CHANNEL 0x10
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#define CMD_DVC_DATA_FIRST 0x20
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#define CMD_DVC_DATA 0x30
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#define CMD_DVC_CLOSE_CHANNEL 0x40
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#define CMD_DVC_CAPABILITY 0x50
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#define XRDP_DRDYNVC_STATUS_CLOSED 0
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#define XRDP_DRDYNVC_STATUS_OPEN_SENT 1
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#define XRDP_DRDYNVC_STATUS_OPEN 2
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#define XRDP_DRDYNVC_STATUS_CLOSE_SENT 3
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/*****************************************************************************/
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/* returns pointer or nil on error */
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static struct mcs_channel_item *
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xrdp_channel_get_item(struct xrdp_channel *self, int channel_id)
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{
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struct mcs_channel_item *channel;
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if (self->mcs_layer->channel_list == NULL)
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{
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LOG(LOG_LEVEL_ERROR, "xrdp_channel_get_item - No channel initialized");
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return NULL ;
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}
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channel = (struct mcs_channel_item *)
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list_get_item(self->mcs_layer->channel_list, channel_id);
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return channel;
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}
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/*****************************************************************************/
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struct xrdp_channel *
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xrdp_channel_create(struct xrdp_sec *owner, struct xrdp_mcs *mcs_layer)
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{
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struct xrdp_channel *self;
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self = (struct xrdp_channel *)g_malloc(sizeof(struct xrdp_channel), 1);
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self->sec_layer = owner;
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self->mcs_layer = mcs_layer;
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self->drdynvc_channel_id = -1;
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return self;
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}
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/*****************************************************************************/
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/* returns error */
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void
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xrdp_channel_delete(struct xrdp_channel *self)
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{
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if (self == 0)
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{
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return;
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}
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free_stream(self->s);
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g_memset(self, 0, sizeof(struct xrdp_channel));
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g_free(self);
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}
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/*****************************************************************************/
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/* returns error */
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int
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xrdp_channel_init(struct xrdp_channel *self, struct stream *s)
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{
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if (xrdp_sec_init(self->sec_layer, s) != 0)
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{
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return 1;
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}
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s_push_layer(s, channel_hdr, 8);
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return 0;
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}
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/*****************************************************************************/
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/* returns error */
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/* This sends data out to the secure layer. */
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int
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xrdp_channel_send(struct xrdp_channel *self, struct stream *s, int channel_id,
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int total_data_len, int flags)
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{
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struct mcs_channel_item *channel;
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channel = xrdp_channel_get_item(self, channel_id);
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if (channel == NULL)
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{
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LOG(LOG_LEVEL_ERROR, "xrdp_channel_send - no such channel");
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return 1;
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}
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if (channel->disabled)
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{
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LOG(LOG_LEVEL_WARNING, "xrdp_channel_send, channel disabled");
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return 0; /* not an error */
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}
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s_pop_layer(s, channel_hdr);
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out_uint32_le(s, total_data_len);
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/*
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* According to 2.2.1.3.4.1 Channel Definition Structure (CHANNEL_DEF):
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* CHANNEL_OPTION_SHOW_PROTOCOL 0x00200000
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* The value of this flag MUST be ignored by the server. The
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* visibility of the Channel PDU Header (section 2.2.6.1.1) is
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* determined by the CHANNEL_FLAG_SHOW_PROTOCOL
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* (0x00000010) flag as defined in the flags field (section
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* 2.2.6.1.1).
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*
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* That's flag makes MSTSC crash when using RAIL channel.
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*/
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// if (channel->flags & XR_CHANNEL_OPTION_SHOW_PROTOCOL)
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// {
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// flags |= CHANNEL_FLAG_SHOW_PROTOCOL;
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// }
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out_uint32_le(s, flags);
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if (xrdp_sec_send(self->sec_layer, s, channel->chanid) != 0)
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{
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LOG(LOG_LEVEL_ERROR, "xrdp_channel_send - failure sending data");
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return 1;
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}
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return 0;
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}
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/*****************************************************************************/
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/* returns error */
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/* this will inform the callback, whatever it is that some channel data is
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ready. the default for this is a call to xrdp_wm.c. */
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static int
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xrdp_channel_call_callback(struct xrdp_channel *self, struct stream *s,
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int channel_id,
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int total_data_len, int flags)
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{
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struct xrdp_session *session;
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int rv;
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int size;
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rv = 0;
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session = self->sec_layer->rdp_layer->session;
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if (session != 0)
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{
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if (session->callback != 0)
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{
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size = (int)(s->end - s->p);
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/* in xrdp_wm.c */
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rv = session->callback(session->id, 0x5555,
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MAKELONG(channel_id, flags),
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size, (tbus)(s->p), total_data_len);
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}
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else
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{
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LOG(LOG_LEVEL_TRACE, "in xrdp_channel_call_callback, session->callback is nil");
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}
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}
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else
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{
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LOG(LOG_LEVEL_TRACE, "in xrdp_channel_call_callback, session is nil");
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}
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return rv;
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}
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/*****************************************************************************/
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static int
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drdynvc_insert_uint_124(struct stream *s, uint32_t val)
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{
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int ret_val;
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if (val <= 0xff)
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{
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out_uint8(s, val);
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ret_val = 0;
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}
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else if (val <= 0xffff)
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{
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out_uint16_le(s, val);
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ret_val = 1;
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}
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else
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{
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out_uint32_le(s, val);
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ret_val = 2;
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}
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return ret_val;
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}
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/*****************************************************************************/
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static int
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drdynvc_get_chan_id(struct stream *s, char cmd, uint32_t *chan_id_p)
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{
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int cbChId;
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int chan_id;
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cbChId = cmd & 0x03;
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if (cbChId == 0)
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{
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if (!s_check_rem(s, 1))
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{
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return 1;
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}
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in_uint8(s, chan_id);
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}
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else if (cbChId == 1)
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{
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if (!s_check_rem(s, 2))
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{
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return 1;
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}
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in_uint16_le(s, chan_id);
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}
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else
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{
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if (!s_check_rem(s, 4))
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{
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return 1;
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}
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in_uint32_le(s, chan_id);
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}
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*chan_id_p = chan_id;
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return 0;
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}
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/*****************************************************************************/
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static int
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drdynvc_process_capability_response(struct xrdp_channel *self,
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int cmd, struct stream *s)
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{
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struct xrdp_session *session;
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int cap_version;
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int rv;
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/* skip padding */
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in_uint8s(s, 1);
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/* read client's version */
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in_uint16_le(s, cap_version);
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if ((cap_version != 2) && (cap_version != 3))
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{
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LOG(LOG_LEVEL_ERROR, "drdynvc_process_capability_response: incompatible DVC "
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"version %d detected", cap_version);
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return 1;
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}
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LOG(LOG_LEVEL_INFO, "drdynvc_process_capability_response: DVC version %d selected",
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cap_version);
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self->drdynvc_state = 1;
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session = self->sec_layer->rdp_layer->session;
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rv = session->callback(session->id, 0x5558, 0, 0, 0, 0);
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return rv;
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}
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/*****************************************************************************/
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static int
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drdynvc_process_open_channel_response(struct xrdp_channel *self,
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int cmd, struct stream *s)
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{
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struct xrdp_session *session;
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int creation_status;
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uint32_t chan_id;
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struct xrdp_drdynvc *drdynvc;
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if (drdynvc_get_chan_id(s, cmd, &chan_id) != 0)
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{
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return 1;
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}
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if (!s_check_rem(s, 4))
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{
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return 1;
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}
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in_uint32_le(s, creation_status);
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LOG_DEVEL(LOG_LEVEL_TRACE, "drdynvc_process_open_channel_response: chan_id 0x%x "
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"creation_status %d", chan_id, creation_status);
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session = self->sec_layer->rdp_layer->session;
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if (chan_id > 255)
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{
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return 1;
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}
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drdynvc = self->drdynvcs + chan_id;
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if (creation_status == 0)
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{
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drdynvc->status = XRDP_DRDYNVC_STATUS_OPEN;
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}
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else
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{
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drdynvc->status = XRDP_DRDYNVC_STATUS_CLOSED;
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}
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if (drdynvc->open_response != NULL)
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{
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return drdynvc->open_response(session->id, chan_id, creation_status);
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}
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return 0;
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}
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/*****************************************************************************/
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static int
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drdynvc_process_close_channel_response(struct xrdp_channel *self,
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int cmd, struct stream *s)
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{
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struct xrdp_session *session;
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uint32_t chan_id;
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struct xrdp_drdynvc *drdynvc;
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if (drdynvc_get_chan_id(s, cmd, &chan_id) != 0)
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{
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return 1;
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}
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LOG_DEVEL(LOG_LEVEL_TRACE, "drdynvc_process_close_channel_response: chan_id 0x%x", chan_id);
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session = self->sec_layer->rdp_layer->session;
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if (chan_id > 255)
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{
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return 1;
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}
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drdynvc = self->drdynvcs + chan_id;
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drdynvc->status = XRDP_DRDYNVC_STATUS_CLOSED;
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if (drdynvc->close_response != NULL)
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{
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return drdynvc->close_response(session->id, chan_id);
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}
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return 0;
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}
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/*****************************************************************************/
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static int
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drdynvc_process_data_first(struct xrdp_channel *self,
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int cmd, struct stream *s)
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{
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struct xrdp_session *session;
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uint32_t chan_id;
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int len;
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int bytes;
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int total_bytes;
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struct xrdp_drdynvc *drdynvc;
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if (drdynvc_get_chan_id(s, cmd, &chan_id) != 0)
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{
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return 1;
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}
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len = (cmd >> 2) & 0x03;
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if (len == 0)
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{
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if (!s_check_rem(s, 1))
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{
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return 1;
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}
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in_uint8(s, total_bytes);
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}
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else if (len == 1)
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{
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if (!s_check_rem(s, 2))
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{
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return 1;
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}
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in_uint16_le(s, total_bytes);
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}
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else
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{
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if (!s_check_rem(s, 4))
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{
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return 1;
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}
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in_uint32_le(s, total_bytes);
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}
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bytes = (int) (s->end - s->p);
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LOG_DEVEL(LOG_LEVEL_TRACE, "drdynvc_process_data_first: bytes %d total_bytes %d", bytes, total_bytes);
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session = self->sec_layer->rdp_layer->session;
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if (chan_id > 255)
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{
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return 1;
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}
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drdynvc = self->drdynvcs + chan_id;
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if (drdynvc->data_first != NULL)
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{
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return drdynvc->data_first(session->id, chan_id, s->p,
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bytes, total_bytes);
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}
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return 0;
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}
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/*****************************************************************************/
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static int
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drdynvc_process_data(struct xrdp_channel *self,
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int cmd, struct stream *s)
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{
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struct xrdp_session *session;
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uint32_t chan_id;
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int bytes;
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struct xrdp_drdynvc *drdynvc;
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if (drdynvc_get_chan_id(s, cmd, &chan_id) != 0)
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{
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return 1;
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}
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bytes = (int) (s->end - s->p);
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LOG_DEVEL(LOG_LEVEL_TRACE, "drdynvc_process_data: bytes %d", bytes);
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session = self->sec_layer->rdp_layer->session;
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if (chan_id > 255)
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{
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return 1;
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}
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drdynvc = self->drdynvcs + chan_id;
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if (drdynvc->data != NULL)
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{
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return drdynvc->data(session->id, chan_id, s->p, bytes);
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}
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return 0;
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}
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/*****************************************************************************/
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static int
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xrdp_channel_process_drdynvc(struct xrdp_channel *self,
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struct mcs_channel_item *channel,
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struct stream *s)
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{
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int total_length;
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int length;
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int flags;
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int cmd;
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int rv;
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struct stream *ls;
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if (!s_check_rem(s, 8))
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{
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return 1;
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}
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in_uint32_le(s, total_length);
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in_uint32_le(s, flags);
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LOG_DEVEL(LOG_LEVEL_TRACE, "xrdp_channel_process_drdynvc: total_length %d flags 0x%8.8x",
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total_length, flags);
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ls = NULL;
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switch (flags & 3)
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{
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case 0:
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length = (int) (s->end - s->p);
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if (!s_check_rem_out(self->s, length))
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{
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return 1;
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}
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out_uint8a(self->s, s->p, length);
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in_uint8s(s, length);
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return 0;
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case 1:
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free_stream(self->s);
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make_stream(self->s);
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init_stream(self->s, total_length);
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length = (int) (s->end - s->p);
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if (!s_check_rem_out(self->s, length))
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{
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return 1;
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}
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out_uint8a(self->s, s->p, length);
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in_uint8s(s, length);
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return 0;
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case 2:
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length = (int) (s->end - s->p);
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if (!s_check_rem_out(self->s, length))
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{
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return 1;
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}
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out_uint8a(self->s, s->p, length);
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in_uint8s(s, length);
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ls = self->s;
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break;
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case 3:
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ls = s;
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break;
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default:
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LOG(LOG_LEVEL_ERROR, "xrdp_channel_process_drdynvc: error");
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return 1;
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}
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if (ls == NULL)
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{
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return 1;
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}
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in_uint8(ls, cmd); /* read command */
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LOG_DEVEL(LOG_LEVEL_TRACE, "xrdp_channel_process_drdynvc: cmd 0x%x", cmd);
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rv = 1;
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switch (cmd & 0xf0)
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{
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case CMD_DVC_CAPABILITY:
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rv = drdynvc_process_capability_response(self, cmd, s);
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break;
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case CMD_DVC_OPEN_CHANNEL:
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rv = drdynvc_process_open_channel_response(self, cmd, s);
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break;
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case CMD_DVC_CLOSE_CHANNEL:
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rv = drdynvc_process_close_channel_response(self, cmd, s);
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break;
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case CMD_DVC_DATA_FIRST:
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rv = drdynvc_process_data_first(self, cmd, s);
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break;
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case CMD_DVC_DATA:
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rv = drdynvc_process_data(self, cmd, s);
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break;
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default:
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LOG_DEVEL(LOG_LEVEL_TRACE, "xrdp_channel_process_drdynvc: got unknown "
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"command 0x%x", cmd);
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break;
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}
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LOG_DEVEL(LOG_LEVEL_TRACE, "xrdp_channel_process_drdynvc: rv %d", rv);
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return rv;
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}
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|
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/*****************************************************************************/
|
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/* returns error */
|
|
/* This is called from the secure layer to process an incoming non global
|
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channel packet.
|
|
'chanid' passed in here is the mcs channel id so it MCS_GLOBAL_CHANNEL
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|
plus something. */
|
|
int
|
|
xrdp_channel_process(struct xrdp_channel *self, struct stream *s,
|
|
int chanid)
|
|
{
|
|
int length;
|
|
int flags;
|
|
int rv;
|
|
int channel_id;
|
|
struct mcs_channel_item *channel;
|
|
|
|
/* this assumes that the channels are in order of chanid(mcs channel id)
|
|
but they should be, see xrdp_sec_process_mcs_data_channels
|
|
the first channel should be MCS_GLOBAL_CHANNEL + 1, second
|
|
one should be MCS_GLOBAL_CHANNEL + 2, and so on */
|
|
channel_id = (chanid - MCS_GLOBAL_CHANNEL) - 1;
|
|
channel = xrdp_channel_get_item(self, channel_id);
|
|
if (channel == NULL)
|
|
{
|
|
LOG(LOG_LEVEL_ERROR, "xrdp_channel_process, channel not found");
|
|
return 1;
|
|
}
|
|
if (channel->disabled)
|
|
{
|
|
LOG(LOG_LEVEL_WARNING, "xrdp_channel_process, channel disabled");
|
|
return 0; /* not an error */
|
|
}
|
|
if (channel_id == self->drdynvc_channel_id)
|
|
{
|
|
return xrdp_channel_process_drdynvc(self, channel, s);
|
|
}
|
|
rv = 0;
|
|
in_uint32_le(s, length);
|
|
in_uint32_le(s, flags);
|
|
rv = xrdp_channel_call_callback(self, s, channel_id, length, flags);
|
|
return rv;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* drdynvc */
|
|
static int
|
|
xrdp_channel_drdynvc_send_capability_request(struct xrdp_channel *self)
|
|
{
|
|
struct stream *s;
|
|
int flags;
|
|
int total_data_len;
|
|
int channel_id;
|
|
char *phold;
|
|
|
|
/* setup stream */
|
|
make_stream(s);
|
|
init_stream(s, 8192);
|
|
if (xrdp_channel_init(self, s) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
phold = s->p;
|
|
out_uint8(s, 0x50); /* insert cmd */
|
|
out_uint8(s, 0x00); /* insert padding */
|
|
out_uint16_le(s, 2); /* insert version */
|
|
/* channel priority unused for now */
|
|
out_uint16_le(s, 0x0000); /* priority charge 0 */
|
|
out_uint16_le(s, 0x0000); /* priority charge 1 */
|
|
out_uint16_le(s, 0x0000); /* priority charge 2 */
|
|
out_uint16_le(s, 0x0000); /* priority charge 3 */
|
|
s_mark_end(s);
|
|
/* send command to client */
|
|
total_data_len = (int) (s->end - phold);
|
|
flags = CHANNEL_FLAG_FIRST | CHANNEL_FLAG_LAST;
|
|
channel_id = self->drdynvc_channel_id;
|
|
if (xrdp_channel_send(self, s, channel_id, total_data_len, flags) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
free_stream(s);
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int
|
|
xrdp_channel_drdynvc_start(struct xrdp_channel *self)
|
|
{
|
|
int index;
|
|
int count;
|
|
struct mcs_channel_item *ci;
|
|
struct mcs_channel_item *dci;
|
|
|
|
LOG_DEVEL(LOG_LEVEL_TRACE, "xrdp_channel_drdynvc_start:");
|
|
dci = NULL;
|
|
count = self->mcs_layer->channel_list->count;
|
|
for (index = 0; index < count; index++)
|
|
{
|
|
ci = (struct mcs_channel_item *)
|
|
list_get_item(self->mcs_layer->channel_list, index);
|
|
if (ci != NULL)
|
|
{
|
|
if (g_strcasecmp(ci->name, "drdynvc") == 0)
|
|
{
|
|
dci = ci;
|
|
}
|
|
}
|
|
}
|
|
if (dci != NULL)
|
|
{
|
|
self->drdynvc_channel_id = (dci->chanid - MCS_GLOBAL_CHANNEL) - 1;
|
|
xrdp_channel_drdynvc_send_capability_request(self);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int
|
|
xrdp_channel_drdynvc_open(struct xrdp_channel *self, const char *name,
|
|
int flags, struct xrdp_drdynvc_procs *procs,
|
|
int *chan_id)
|
|
{
|
|
struct stream *s;
|
|
int ChId;
|
|
int cbChId;
|
|
int chan_pri;
|
|
int static_channel_id;
|
|
int name_length;
|
|
int total_data_len;
|
|
int static_flags;
|
|
char *cmd_ptr;
|
|
|
|
make_stream(s);
|
|
init_stream(s, 8192);
|
|
if (xrdp_channel_init(self, s) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
cmd_ptr = s->p;
|
|
out_uint8(s, 0);
|
|
ChId = 1;
|
|
while (self->drdynvcs[ChId].status != XRDP_DRDYNVC_STATUS_CLOSED)
|
|
{
|
|
ChId++;
|
|
if (ChId > 255)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
}
|
|
cbChId = drdynvc_insert_uint_124(s, ChId);
|
|
name_length = g_strlen(name);
|
|
out_uint8a(s, name, name_length + 1);
|
|
chan_pri = 0;
|
|
cmd_ptr[0] = CMD_DVC_OPEN_CHANNEL | ((chan_pri << 2) & 0x0c) | cbChId;
|
|
static_channel_id = self->drdynvc_channel_id;
|
|
static_flags = CHANNEL_FLAG_FIRST | CHANNEL_FLAG_LAST;
|
|
s_mark_end(s);
|
|
total_data_len = (int) (s->end - cmd_ptr);
|
|
if (xrdp_channel_send(self, s, static_channel_id, total_data_len,
|
|
static_flags) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
free_stream(s);
|
|
*chan_id = ChId;
|
|
self->drdynvcs[ChId].open_response = procs->open_response;
|
|
self->drdynvcs[ChId].close_response = procs->close_response;
|
|
self->drdynvcs[ChId].data_first = procs->data_first;
|
|
self->drdynvcs[ChId].data = procs->data;
|
|
self->drdynvcs[ChId].status = XRDP_DRDYNVC_STATUS_OPEN_SENT;
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int
|
|
xrdp_channel_drdynvc_close(struct xrdp_channel *self, int chan_id)
|
|
{
|
|
struct stream *s;
|
|
int ChId;
|
|
int cbChId;
|
|
int static_channel_id;
|
|
int total_data_len;
|
|
int static_flags;
|
|
char *cmd_ptr;
|
|
|
|
if ((chan_id < 0) || (chan_id > 255))
|
|
{
|
|
return 1;
|
|
}
|
|
if ((self->drdynvcs[chan_id].status != XRDP_DRDYNVC_STATUS_OPEN) &&
|
|
(self->drdynvcs[chan_id].status != XRDP_DRDYNVC_STATUS_OPEN_SENT))
|
|
{
|
|
/* not open */
|
|
return 1;
|
|
}
|
|
make_stream(s);
|
|
init_stream(s, 8192);
|
|
if (xrdp_channel_init(self, s) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
cmd_ptr = s->p;
|
|
out_uint8(s, 0);
|
|
ChId = chan_id;
|
|
cbChId = drdynvc_insert_uint_124(s, ChId);
|
|
cmd_ptr[0] = CMD_DVC_CLOSE_CHANNEL | cbChId;
|
|
static_channel_id = self->drdynvc_channel_id;
|
|
static_flags = CHANNEL_FLAG_FIRST | CHANNEL_FLAG_LAST;
|
|
s_mark_end(s);
|
|
total_data_len = (int) (s->end - cmd_ptr);
|
|
if (xrdp_channel_send(self, s, static_channel_id, total_data_len,
|
|
static_flags) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
free_stream(s);
|
|
self->drdynvcs[ChId].status = XRDP_DRDYNVC_STATUS_CLOSE_SENT;
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int
|
|
xrdp_channel_drdynvc_data_first(struct xrdp_channel *self, int chan_id,
|
|
const char *data, int data_bytes,
|
|
int total_data_bytes)
|
|
{
|
|
struct stream *s;
|
|
int ChId;
|
|
int cbChId;
|
|
int cbTotalDataSize;
|
|
int static_channel_id;
|
|
int total_data_len;
|
|
int static_flags;
|
|
char *cmd_ptr;
|
|
|
|
if ((chan_id < 0) || (chan_id > 255))
|
|
{
|
|
return 1;
|
|
}
|
|
if (self->drdynvcs[chan_id].status != XRDP_DRDYNVC_STATUS_OPEN)
|
|
{
|
|
return 1;
|
|
}
|
|
if (data_bytes > 1590)
|
|
{
|
|
return 1;
|
|
}
|
|
make_stream(s);
|
|
init_stream(s, 8192);
|
|
if (xrdp_channel_init(self, s) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
cmd_ptr = s->p;
|
|
out_uint8(s, 0);
|
|
ChId = chan_id;
|
|
cbChId = drdynvc_insert_uint_124(s, ChId);
|
|
cbTotalDataSize = drdynvc_insert_uint_124(s, total_data_bytes);
|
|
out_uint8p(s, data, data_bytes);
|
|
cmd_ptr[0] = CMD_DVC_DATA_FIRST | (cbTotalDataSize << 2) | cbChId;
|
|
static_channel_id = self->drdynvc_channel_id;
|
|
static_flags = CHANNEL_FLAG_FIRST | CHANNEL_FLAG_LAST;
|
|
s_mark_end(s);
|
|
total_data_len = (int) (s->end - cmd_ptr);
|
|
if (xrdp_channel_send(self, s, static_channel_id, total_data_len,
|
|
static_flags) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
free_stream(s);
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
int
|
|
xrdp_channel_drdynvc_data(struct xrdp_channel *self, int chan_id,
|
|
const char *data, int data_bytes)
|
|
{
|
|
struct stream *s;
|
|
int ChId;
|
|
int cbChId;
|
|
int static_channel_id;
|
|
int total_data_len;
|
|
int static_flags;
|
|
char *cmd_ptr;
|
|
|
|
if ((chan_id < 0) || (chan_id > 255))
|
|
{
|
|
return 1;
|
|
}
|
|
if (self->drdynvcs[chan_id].status != XRDP_DRDYNVC_STATUS_OPEN)
|
|
{
|
|
return 1;
|
|
}
|
|
if (data_bytes > 1590)
|
|
{
|
|
return 1;
|
|
}
|
|
make_stream(s);
|
|
init_stream(s, 8192);
|
|
if (xrdp_channel_init(self, s) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
cmd_ptr = s->p;
|
|
out_uint8(s, 0);
|
|
ChId = chan_id;
|
|
cbChId = drdynvc_insert_uint_124(s, ChId);
|
|
out_uint8p(s, data, data_bytes);
|
|
cmd_ptr[0] = CMD_DVC_DATA | cbChId;
|
|
static_channel_id = self->drdynvc_channel_id;
|
|
static_flags = CHANNEL_FLAG_FIRST | CHANNEL_FLAG_LAST;
|
|
s_mark_end(s);
|
|
total_data_len = (int) (s->end - cmd_ptr);
|
|
if (xrdp_channel_send(self, s, static_channel_id, total_data_len,
|
|
static_flags) != 0)
|
|
{
|
|
free_stream(s);
|
|
return 1;
|
|
}
|
|
free_stream(s);
|
|
return 0;
|
|
}
|