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Milestone 5: deliver embedded RDP sessions and lifecycle hardening

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This commit is contained in:
Keith Smith
2026-03-03 18:59:26 -07:00
parent 230a401386
commit 36006bd4aa
2941 changed files with 724359 additions and 77 deletions
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23
third_party/FreeRDP/channels/drdynvc/server/CMakeLists.txt vendored Normal file
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# FreeRDP: A Remote Desktop Protocol Implementation
# FreeRDP cmake build script
#
# Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
define_channel_server("drdynvc")
set(${MODULE_PREFIX}_SRCS drdynvc_main.c drdynvc_main.h)
set(${MODULE_PREFIX}_LIBS freerdp)
add_channel_server_library(${MODULE_PREFIX} ${MODULE_NAME} ${CHANNEL_NAME} FALSE "VirtualChannelEntry")

204
third_party/FreeRDP/channels/drdynvc/server/drdynvc_main.c vendored Normal file
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/**
* FreeRDP: A Remote Desktop Protocol Implementation
* Dynamic Virtual Channel Extension
*
* Copyright 2013 Marc-Andre Moreau <marcandre.moreau@gmail.com>
* Copyright 2015 Thincast Technologies GmbH
* Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <freerdp/config.h>
#include <winpr/crt.h>
#include <winpr/print.h>
#include <winpr/stream.h>
#include <freerdp/channels/log.h>
#include <freerdp/channels/drdynvc.h>
#include "drdynvc_main.h"
#define TAG CHANNELS_TAG("drdynvc.server")
static DWORD WINAPI drdynvc_server_thread(WINPR_ATTR_UNUSED LPVOID arg)
{
#if 0
wStream* s;
DWORD status;
DWORD nCount;
void* buffer;
HANDLE events[8];
HANDLE ChannelEvent;
DWORD BytesReturned;
DrdynvcServerContext* context;
UINT error = ERROR_INTERNAL_ERROR;
context = (DrdynvcServerContext*) arg;
buffer = nullptr;
BytesReturned = 0;
ChannelEvent = nullptr;
s = Stream_New(nullptr, 4096);
if (!s)
{
WLog_ERR(TAG, "Stream_New failed!");
ExitThread((DWORD) CHANNEL_RC_NO_MEMORY);
return CHANNEL_RC_NO_MEMORY;
}
if (WTSVirtualChannelQuery(context->priv->ChannelHandle, WTSVirtualEventHandle,
&buffer, &BytesReturned) == TRUE)
{
if (BytesReturned == sizeof(HANDLE))
CopyMemory(&ChannelEvent, buffer, sizeof(HANDLE));
WTSFreeMemory(buffer);
}
nCount = 0;
events[nCount++] = ChannelEvent;
events[nCount++] = context->priv->StopEvent;
while (1)
{
status = WaitForMultipleObjects(nCount, events, FALSE, INFINITE);
if (WaitForSingleObject(context->priv->StopEvent, 0) == WAIT_OBJECT_0)
{
error = CHANNEL_RC_OK;
break;
}
if (!WTSVirtualChannelRead(context->priv->ChannelHandle, 0, nullptr, 0,
&BytesReturned))
{
WLog_ERR(TAG, "WTSVirtualChannelRead failed!");
break;
}
if (BytesReturned < 1)
continue;
if (!Stream_EnsureRemainingCapacity(s, BytesReturned))
{
WLog_ERR(TAG, "Stream_EnsureRemainingCapacity failed!");
break;
}
if (!WTSVirtualChannelRead(context->priv->ChannelHandle, 0,
Stream_BufferAs(s, char), Stream_Capacity(s), &BytesReturned))
{
WLog_ERR(TAG, "WTSVirtualChannelRead failed!");
break;
}
}
Stream_Free(s, TRUE);
ExitThread((DWORD) error);
#endif
// WTF ... this code only reads data into the stream until there is no more memory
ExitThread(0);
return 0;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT drdynvc_server_start(DrdynvcServerContext* context)
{
context->priv->ChannelHandle =
WTSVirtualChannelOpen(context->vcm, WTS_CURRENT_SESSION, DRDYNVC_SVC_CHANNEL_NAME);
if (!context->priv->ChannelHandle)
{
WLog_ERR(TAG, "WTSVirtualChannelOpen failed!");
return CHANNEL_RC_NO_MEMORY;
}
if (!(context->priv->StopEvent = CreateEvent(nullptr, TRUE, FALSE, nullptr)))
{
WLog_ERR(TAG, "CreateEvent failed!");
return ERROR_INTERNAL_ERROR;
}
if (!(context->priv->Thread =
CreateThread(nullptr, 0, drdynvc_server_thread, (void*)context, 0, nullptr)))
{
WLog_ERR(TAG, "CreateThread failed!");
(void)CloseHandle(context->priv->StopEvent);
context->priv->StopEvent = nullptr;
return ERROR_INTERNAL_ERROR;
}
return CHANNEL_RC_OK;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT drdynvc_server_stop(DrdynvcServerContext* context)
{
UINT error = 0;
(void)SetEvent(context->priv->StopEvent);
if (WaitForSingleObject(context->priv->Thread, INFINITE) == WAIT_FAILED)
{
error = GetLastError();
WLog_ERR(TAG, "WaitForSingleObject failed with error %" PRIu32 "!", error);
return error;
}
(void)CloseHandle(context->priv->Thread);
return CHANNEL_RC_OK;
}
DrdynvcServerContext* drdynvc_server_context_new(HANDLE vcm)
{
DrdynvcServerContext* context = nullptr;
context = (DrdynvcServerContext*)calloc(1, sizeof(DrdynvcServerContext));
if (context)
{
context->vcm = vcm;
context->Start = drdynvc_server_start;
context->Stop = drdynvc_server_stop;
context->priv = (DrdynvcServerPrivate*)calloc(1, sizeof(DrdynvcServerPrivate));
if (!context->priv)
{
WLog_ERR(TAG, "calloc failed!");
free(context);
return nullptr;
}
}
else
{
WLog_ERR(TAG, "calloc failed!");
}
return context;
}
void drdynvc_server_context_free(DrdynvcServerContext* context)
{
if (context)
{
free(context->priv);
free(context);
}
}

37
third_party/FreeRDP/channels/drdynvc/server/drdynvc_main.h vendored Normal file
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/**
* FreeRDP: A Remote Desktop Protocol Implementation
* Dynamic Virtual Channel Extension
*
* Copyright 2013 Marc-Andre Moreau <marcandre.moreau@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef FREERDP_CHANNEL_DRDYNVC_SERVER_MAIN_H
#define FREERDP_CHANNEL_DRDYNVC_SERVER_MAIN_H
#include <winpr/crt.h>
#include <winpr/synch.h>
#include <winpr/thread.h>
#include <freerdp/settings.h>
#include <freerdp/server/drdynvc.h>
struct s_drdynvc_server_private
{
HANDLE Thread;
HANDLE StopEvent;
void* ChannelHandle;
};
#endif /* FREERDP_CHANNEL_DRDYNVC_SERVER_MAIN_H */