mirror of https://github.com/FreeRDP/FreeRDP
122 lines
2.7 KiB
C
122 lines
2.7 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* Virtual Channels
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*
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* Copyright 2011 Vic Lee
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <freerdp/freerdp.h>
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#include <freerdp/peer.h>
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#include <freerdp/constants.h>
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#include <freerdp/utils/memory.h>
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#include <freerdp/utils/stream.h>
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#include "rdp.h"
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#include "channel.h"
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BOOL freerdp_channel_send(rdpRdp* rdp, UINT16 channel_id, BYTE* data, int size)
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{
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STREAM* s;
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UINT32 flags;
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int i, left;
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int chunk_size;
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rdpChannel* channel = NULL;
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for (i = 0; i < rdp->settings->num_channels; i++)
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{
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if (rdp->settings->channels[i].channel_id == channel_id)
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{
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channel = &rdp->settings->channels[i];
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break;
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}
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}
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if (channel == NULL)
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{
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printf("freerdp_channel_send: unknown channel_id %d\n", channel_id);
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return FALSE;
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}
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flags = CHANNEL_FLAG_FIRST;
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left = size;
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while (left > 0)
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{
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s = rdp_send_stream_init(rdp);
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if (left > (int) rdp->settings->vc_chunk_size)
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{
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chunk_size = rdp->settings->vc_chunk_size;
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}
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else
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{
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chunk_size = left;
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flags |= CHANNEL_FLAG_LAST;
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}
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if ((channel->options & 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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stream_write_UINT32(s, size);
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stream_write_UINT32(s, flags);
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stream_check_size(s, chunk_size);
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stream_write(s, data, chunk_size);
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rdp_send(rdp, s, channel_id);
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data += chunk_size;
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left -= chunk_size;
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flags = 0;
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}
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return TRUE;
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}
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void freerdp_channel_process(freerdp* instance, STREAM* s, UINT16 channel_id)
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{
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UINT32 length;
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UINT32 flags;
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int chunk_length;
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stream_read_UINT32(s, length);
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stream_read_UINT32(s, flags);
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chunk_length = stream_get_left(s);
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IFCALL(instance->ReceiveChannelData, instance,
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channel_id, stream_get_tail(s), chunk_length, flags, length);
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}
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void freerdp_channel_peer_process(freerdp_peer* client, STREAM* s, UINT16 channel_id)
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{
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UINT32 length;
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UINT32 flags;
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int chunk_length;
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stream_read_UINT32(s, length);
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stream_read_UINT32(s, flags);
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chunk_length = stream_get_left(s);
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IFCALL(client->ReceiveChannelData, client,
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channel_id, stream_get_tail(s), chunk_length, flags, length);
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}
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