/** * FreeRDP: A Remote Desktop Protocol Implementation * Server Channels * * Copyright 2014 Marc-Andre Moreau * Copyright 2015 Thincast Technologies GmbH * Copyright 2015 DI (FH) Martin Haimberger * * 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 #include #include #include #include #include #include #include #include #include #include #include "rdp.h" #include "server.h" #define TAG FREERDP_TAG("core.server") #ifdef WITH_DEBUG_DVC #define DEBUG_DVC(...) WLog_DBG(TAG, __VA_ARGS__) #else #define DEBUG_DVC(...) \ do \ { \ } while (0) #endif typedef struct { UINT16 channelId; UINT16 reserved; UINT32 length; UINT32 offset; } wtsChannelMessage; static DWORD g_SessionId = 1; static wHashTable* g_ServerHandles = NULL; static rdpPeerChannel* wts_get_dvc_channel_by_id(WTSVirtualChannelManager* vcm, UINT32 ChannelId) { int index; int count; BOOL found = FALSE; rdpPeerChannel* channel = NULL; WINPR_ASSERT(vcm); ArrayList_Lock(vcm->dynamicVirtualChannels); count = ArrayList_Count(vcm->dynamicVirtualChannels); for (index = 0; index < count; index++) { channel = (rdpPeerChannel*)ArrayList_GetItem(vcm->dynamicVirtualChannels, index); WINPR_ASSERT(channel); if (channel->channelId == ChannelId) { found = TRUE; break; } } ArrayList_Unlock(vcm->dynamicVirtualChannels); return found ? channel : NULL; } static BOOL wts_queue_receive_data(rdpPeerChannel* channel, const BYTE* Buffer, UINT32 Length) { BYTE* buffer; wtsChannelMessage* messageCtx; WINPR_ASSERT(channel); messageCtx = (wtsChannelMessage*)malloc(sizeof(wtsChannelMessage) + Length); if (!messageCtx) return FALSE; messageCtx->channelId = channel->channelId; messageCtx->length = Length; messageCtx->offset = 0; buffer = (BYTE*)(messageCtx + 1); CopyMemory(buffer, Buffer, Length); return MessageQueue_Post(channel->queue, messageCtx, 0, NULL, NULL); } static BOOL wts_queue_send_item(rdpPeerChannel* channel, BYTE* Buffer, UINT32 Length) { BYTE* buffer; UINT32 length; UINT16 channelId; WINPR_ASSERT(channel); WINPR_ASSERT(channel->vcm); buffer = Buffer; length = Length; channelId = channel->channelId; return MessageQueue_Post(channel->vcm->queue, (void*)(UINT_PTR)channelId, 0, (void*)buffer, (void*)(UINT_PTR)length); } static int wts_read_variable_uint(wStream* s, int cbLen, UINT32* val) { WINPR_ASSERT(s); WINPR_ASSERT(val); switch (cbLen) { case 0: if (!Stream_CheckAndLogRequiredLength(TAG, s, 1)) return 0; Stream_Read_UINT8(s, *val); return 1; case 1: if (!Stream_CheckAndLogRequiredLength(TAG, s, 2)) return 0; Stream_Read_UINT16(s, *val); return 2; case 2: if (!Stream_CheckAndLogRequiredLength(TAG, s, 4)) return 0; Stream_Read_UINT32(s, *val); return 4; default: WLog_ERR(TAG, "invalid wts variable uint len %d", cbLen); return 0; } } static BOOL wts_read_drdynvc_capabilities_response(rdpPeerChannel* channel, UINT32 length) { UINT16 Version; WINPR_ASSERT(channel); WINPR_ASSERT(channel->vcm); if (length < 3) return FALSE; Stream_Seek_UINT8(channel->receiveData); /* Pad (1 byte) */ Stream_Read_UINT16(channel->receiveData, Version); DEBUG_DVC("Version: %" PRIu16 "", Version); channel->vcm->drdynvc_state = DRDYNVC_STATE_READY; return TRUE; } static BOOL wts_read_drdynvc_create_response(rdpPeerChannel* channel, wStream* s, UINT32 length) { UINT32 CreationStatus; WINPR_ASSERT(channel); WINPR_ASSERT(s); if (length < 4) return FALSE; Stream_Read_UINT32(s, CreationStatus); if ((INT32)CreationStatus < 0) { DEBUG_DVC("ChannelId %" PRIu32 " creation failed (%" PRId32 ")", channel->channelId, (INT32)CreationStatus); channel->dvc_open_state = DVC_OPEN_STATE_FAILED; } else { DEBUG_DVC("ChannelId %" PRIu32 " creation succeeded", channel->channelId); channel->dvc_open_state = DVC_OPEN_STATE_SUCCEEDED; } return TRUE; } static BOOL wts_read_drdynvc_data_first(rdpPeerChannel* channel, wStream* s, int cbLen, UINT32 length) { int value; WINPR_ASSERT(channel); WINPR_ASSERT(s); value = wts_read_variable_uint(s, cbLen, &channel->dvc_total_length); if (value == 0) return FALSE; length -= value; if (length > channel->dvc_total_length) return FALSE; Stream_SetPosition(channel->receiveData, 0); if (!Stream_EnsureRemainingCapacity(channel->receiveData, channel->dvc_total_length)) return FALSE; Stream_Write(channel->receiveData, Stream_Pointer(s), length); return TRUE; } static BOOL wts_read_drdynvc_data(rdpPeerChannel* channel, wStream* s, UINT32 length) { BOOL ret = FALSE; WINPR_ASSERT(channel); WINPR_ASSERT(s); if (channel->dvc_total_length > 0) { if (Stream_GetPosition(channel->receiveData) + length > channel->dvc_total_length) { channel->dvc_total_length = 0; WLog_ERR(TAG, "incorrect fragment data, discarded."); return FALSE; } Stream_Write(channel->receiveData, Stream_Pointer(s), length); if (Stream_GetPosition(channel->receiveData) >= channel->dvc_total_length) { ret = wts_queue_receive_data(channel, Stream_Buffer(channel->receiveData), channel->dvc_total_length); channel->dvc_total_length = 0; } else ret = TRUE; } else { ret = wts_queue_receive_data(channel, Stream_Pointer(s), length); } return ret; } static void wts_read_drdynvc_close_response(rdpPeerChannel* channel) { WINPR_ASSERT(channel); DEBUG_DVC("ChannelId %" PRIu32 " close response", channel->channelId); channel->dvc_open_state = DVC_OPEN_STATE_CLOSED; MessageQueue_PostQuit(channel->queue, 0); } static BOOL wts_read_drdynvc_pdu(rdpPeerChannel* channel) { UINT32 length; int value; int Cmd; int Sp; int cbChId; UINT32 ChannelId; rdpPeerChannel* dvc; WINPR_ASSERT(channel); WINPR_ASSERT(channel->vcm); length = Stream_GetPosition(channel->receiveData); if (length < 1) return FALSE; Stream_SetPosition(channel->receiveData, 0); Stream_Read_UINT8(channel->receiveData, value); length--; Cmd = (value & 0xf0) >> 4; Sp = (value & 0x0c) >> 2; cbChId = (value & 0x03) >> 0; if (Cmd == CAPABILITY_REQUEST_PDU) return wts_read_drdynvc_capabilities_response(channel, length); if (channel->vcm->drdynvc_state == DRDYNVC_STATE_READY) { BOOL haveChannelId; switch (Cmd) { case SOFT_SYNC_REQUEST_PDU: case SOFT_SYNC_RESPONSE_PDU: haveChannelId = FALSE; break; default: haveChannelId = TRUE; break; } if (haveChannelId) { value = wts_read_variable_uint(channel->receiveData, cbChId, &ChannelId); if (value == 0) return FALSE; length -= value; DEBUG_DVC("Cmd %d ChannelId %" PRIu32 " length %" PRIu32 "", Cmd, ChannelId, length); dvc = wts_get_dvc_channel_by_id(channel->vcm, ChannelId); if (!dvc) { DEBUG_DVC("ChannelId %" PRIu32 " not exists.", ChannelId); return TRUE; } } switch (Cmd) { case CREATE_REQUEST_PDU: return wts_read_drdynvc_create_response(dvc, channel->receiveData, length); case DATA_FIRST_PDU: return wts_read_drdynvc_data_first(dvc, channel->receiveData, Sp, length); case DATA_PDU: return wts_read_drdynvc_data(dvc, channel->receiveData, length); case CLOSE_REQUEST_PDU: wts_read_drdynvc_close_response(dvc); break; case DATA_FIRST_COMPRESSED_PDU: case DATA_COMPRESSED_PDU: WLog_ERR(TAG, "Compressed data not handled"); break; case SOFT_SYNC_RESPONSE_PDU: WLog_ERR(TAG, "SoftSync response not handled yet(and rather strange to receive that packet as our code doesn't send SoftSync requests"); break; case SOFT_SYNC_REQUEST_PDU: WLog_ERR(TAG, "Not expecting a SoftSyncRequest on the server"); return FALSE; default: WLog_ERR(TAG, "Cmd %d not recognized.", Cmd); break; } } else { WLog_ERR(TAG, "received Cmd %d but channel is not ready.", Cmd); } return TRUE; } static int wts_write_variable_uint(wStream* s, UINT32 val) { int cb; WINPR_ASSERT(s); if (val <= 0xFF) { cb = 0; Stream_Write_UINT8(s, val); } else if (val <= 0xFFFF) { cb = 1; Stream_Write_UINT16(s, val); } else { cb = 2; Stream_Write_UINT32(s, val); } return cb; } static void wts_write_drdynvc_header(wStream* s, BYTE Cmd, UINT32 ChannelId) { BYTE* bm; int cbChId; WINPR_ASSERT(s); Stream_GetPointer(s, bm); Stream_Seek_UINT8(s); cbChId = wts_write_variable_uint(s, ChannelId); *bm = ((Cmd & 0x0F) << 4) | cbChId; } static BOOL wts_write_drdynvc_create_request(wStream* s, UINT32 ChannelId, const char* ChannelName) { size_t len; WINPR_ASSERT(s); WINPR_ASSERT(ChannelName); wts_write_drdynvc_header(s, CREATE_REQUEST_PDU, ChannelId); len = strlen(ChannelName) + 1; if (!Stream_EnsureRemainingCapacity(s, len)) return FALSE; Stream_Write(s, ChannelName, len); return TRUE; } static BOOL WTSProcessChannelData(rdpPeerChannel* channel, UINT16 channelId, const BYTE* data, size_t s, UINT32 flags, size_t t) { BOOL ret = TRUE; const size_t size = (size_t)s; const size_t totalSize = (size_t)t; WINPR_ASSERT(channel); WINPR_ASSERT(channel->vcm); WINPR_UNUSED(channelId); if (flags & CHANNEL_FLAG_FIRST) { Stream_SetPosition(channel->receiveData, 0); } if (!Stream_EnsureRemainingCapacity(channel->receiveData, size)) return FALSE; Stream_Write(channel->receiveData, data, size); if (flags & CHANNEL_FLAG_LAST) { if (Stream_GetPosition(channel->receiveData) != totalSize) { WLog_ERR(TAG, "read error"); } if (channel == channel->vcm->drdynvc_channel) { ret = wts_read_drdynvc_pdu(channel); } else { ret = wts_queue_receive_data(channel, Stream_Buffer(channel->receiveData), Stream_GetPosition(channel->receiveData)); } Stream_SetPosition(channel->receiveData, 0); } return ret; } static BOOL WTSReceiveChannelData(freerdp_peer* client, UINT16 channelId, const BYTE* data, size_t size, UINT32 flags, size_t totalSize) { UINT32 i; rdpMcs* mcs; WINPR_ASSERT(client); WINPR_ASSERT(client->context); WINPR_ASSERT(client->context->rdp); mcs = client->context->rdp->mcs; WINPR_ASSERT(mcs); for (i = 0; i < mcs->channelCount; i++) { rdpMcsChannel* cur = &mcs->channels[i]; if (cur->ChannelId == channelId) { rdpPeerChannel* channel = (rdpPeerChannel*)cur->handle; if (channel) return WTSProcessChannelData(channel, channelId, data, size, flags, totalSize); } } WLog_WARN(TAG, "[%s] unknown channelId %" PRIu16 " ignored", __FUNCTION__, channelId); return TRUE; } #if defined(WITH_FREERDP_DEPRECATED) void WTSVirtualChannelManagerGetFileDescriptor(HANDLE hServer, void** fds, int* fds_count) { void* fd; WTSVirtualChannelManager* vcm = (WTSVirtualChannelManager*)hServer; WINPR_ASSERT(vcm); WINPR_ASSERT(fds); WINPR_ASSERT(fds_count); fd = GetEventWaitObject(MessageQueue_Event(vcm->queue)); if (fd) { fds[*fds_count] = fd; (*fds_count)++; } #if 0 if (vcm->drdynvc_channel) { fd = GetEventWaitObject(vcm->drdynvc_channel->receiveEvent); if (fd) { fds[*fds_count] = fd; (*fds_count)++; } } #endif } #endif static BOOL WTSVirtualChannelManagerOpen(WTSVirtualChannelManager* vcm) { if (!vcm) return FALSE; WINPR_ASSERT(vcm->client); if ((vcm->drdynvc_state == DRDYNVC_STATE_NONE) && vcm->client->activated) { rdpPeerChannel* channel; UINT32 dynvc_caps; /* Initialize drdynvc channel once and only once. */ vcm->drdynvc_state = DRDYNVC_STATE_INITIALIZED; channel = (rdpPeerChannel*)WTSVirtualChannelOpen((HANDLE)vcm, WTS_CURRENT_SESSION, DRDYNVC_SVC_CHANNEL_NAME); if (channel) { ULONG written; vcm->drdynvc_channel = channel; dynvc_caps = 0x00010050; /* DYNVC_CAPS_VERSION1 (4 bytes) */ if (!WTSVirtualChannelWrite(channel, (PCHAR)&dynvc_caps, sizeof(dynvc_caps), &written)) return FALSE; } } return TRUE; } BOOL WTSVirtualChannelManagerCheckFileDescriptorEx(HANDLE hServer, BOOL autoOpen) { wMessage message; BOOL status = TRUE; WTSVirtualChannelManager* vcm; if (!hServer || hServer == INVALID_HANDLE_VALUE) return FALSE; vcm = (WTSVirtualChannelManager*)hServer; if (autoOpen) { if (!WTSVirtualChannelManagerOpen(vcm)) return FALSE; } while (MessageQueue_Peek(vcm->queue, &message, TRUE)) { BYTE* buffer; UINT32 length; UINT16 channelId; channelId = (UINT16)(UINT_PTR)message.context; buffer = (BYTE*)message.wParam; length = (UINT32)(UINT_PTR)message.lParam; WINPR_ASSERT(vcm->client); WINPR_ASSERT(vcm->client->SendChannelData); if (!vcm->client->SendChannelData(vcm->client, channelId, buffer, length)) { status = FALSE; } free(buffer); if (!status) break; } return status; } BOOL WTSVirtualChannelManagerCheckFileDescriptor(HANDLE hServer) { return WTSVirtualChannelManagerCheckFileDescriptorEx(hServer, TRUE); } HANDLE WTSVirtualChannelManagerGetEventHandle(HANDLE hServer) { WTSVirtualChannelManager* vcm = (WTSVirtualChannelManager*)hServer; WINPR_ASSERT(vcm); return MessageQueue_Event(vcm->queue); } static rdpMcsChannel* wts_get_joined_channel_by_name(rdpMcs* mcs, const char* channel_name) { UINT32 index; if (!mcs || !channel_name || !strnlen(channel_name, CHANNEL_NAME_LEN + 1)) return NULL; for (index = 0; index < mcs->channelCount; index++) { rdpMcsChannel* mchannel = &mcs->channels[index]; if (mchannel->joined) { if (_strnicmp(mchannel->Name, channel_name, CHANNEL_NAME_LEN + 1) == 0) return mchannel; } } return NULL; } static rdpMcsChannel* wts_get_joined_channel_by_id(rdpMcs* mcs, const UINT16 channel_id) { UINT32 index; if (!mcs || !channel_id) return NULL; WINPR_ASSERT(mcs->channels); for (index = 0; index < mcs->channelCount; index++) { rdpMcsChannel* mchannel = &mcs->channels[index]; if (mchannel->joined) { if (mchannel->ChannelId == channel_id) return &mcs->channels[index]; } } return NULL; } BOOL WTSIsChannelJoinedByName(freerdp_peer* client, const char* channel_name) { if (!client || !client->context || !client->context->rdp) return FALSE; return wts_get_joined_channel_by_name(client->context->rdp->mcs, channel_name) == NULL ? FALSE : TRUE; } BOOL WTSIsChannelJoinedById(freerdp_peer* client, const UINT16 channel_id) { if (!client || !client->context || !client->context->rdp) return FALSE; return wts_get_joined_channel_by_id(client->context->rdp->mcs, channel_id) == NULL ? FALSE : TRUE; } BOOL WTSVirtualChannelManagerIsChannelJoined(HANDLE hServer, const char* name) { WTSVirtualChannelManager* vcm = (WTSVirtualChannelManager*)hServer; if (!vcm || !vcm->rdp) return FALSE; return wts_get_joined_channel_by_name(vcm->rdp->mcs, name) == NULL ? FALSE : TRUE; } BYTE WTSVirtualChannelManagerGetDrdynvcState(HANDLE hServer) { WTSVirtualChannelManager* vcm = (WTSVirtualChannelManager*)hServer; WINPR_ASSERT(vcm); return vcm->drdynvc_state; } UINT16 WTSChannelGetId(freerdp_peer* client, const char* channel_name) { rdpMcsChannel* channel; WINPR_ASSERT(channel_name); if (!client || !client->context || !client->context->rdp) return 0; channel = wts_get_joined_channel_by_name(client->context->rdp->mcs, channel_name); if (!channel) return 0; return channel->ChannelId; } BOOL WTSChannelSetHandleByName(freerdp_peer* client, const char* channel_name, void* handle) { rdpMcsChannel* channel; WINPR_ASSERT(channel_name); if (!client || !client->context || !client->context->rdp) return FALSE; channel = wts_get_joined_channel_by_name(client->context->rdp->mcs, channel_name); if (!channel) return FALSE; channel->handle = handle; return TRUE; } BOOL WTSChannelSetHandleById(freerdp_peer* client, const UINT16 channel_id, void* handle) { rdpMcsChannel* channel; if (!client || !client->context || !client->context->rdp) return FALSE; channel = wts_get_joined_channel_by_id(client->context->rdp->mcs, channel_id); if (!channel) return FALSE; channel->handle = handle; return TRUE; } void* WTSChannelGetHandleByName(freerdp_peer* client, const char* channel_name) { rdpMcsChannel* channel; WINPR_ASSERT(channel_name); if (!client || !client->context || !client->context->rdp) return NULL; channel = wts_get_joined_channel_by_name(client->context->rdp->mcs, channel_name); if (!channel) return NULL; return channel->handle; } void* WTSChannelGetHandleById(freerdp_peer* client, const UINT16 channel_id) { rdpMcsChannel* channel; if (!client || !client->context || !client->context->rdp) return NULL; channel = wts_get_joined_channel_by_id(client->context->rdp->mcs, channel_id); if (!channel) return NULL; return channel->handle; } const char* WTSChannelGetName(freerdp_peer* client, UINT16 channel_id) { rdpMcsChannel* channel; if (!client || !client->context || !client->context->rdp) return NULL; channel = wts_get_joined_channel_by_id(client->context->rdp->mcs, channel_id); if (!channel) return NULL; return (const char*)channel->Name; } char** WTSGetAcceptedChannelNames(freerdp_peer* client, size_t* count) { rdpMcs* mcs; char** names; UINT32 index; if (!client || !client->context || !count) return NULL; WINPR_ASSERT(client->context->rdp); mcs = client->context->rdp->mcs; WINPR_ASSERT(mcs); *count = mcs->channelCount; names = (char**)calloc(mcs->channelCount, sizeof(char*)); if (!names) return NULL; for (index = 0; index < mcs->channelCount; index++) { rdpMcsChannel* mchannel = &mcs->channels[index]; names[index] = mchannel->Name; } return names; } BOOL WINAPI FreeRDP_WTSStartRemoteControlSessionW(LPWSTR pTargetServerName, ULONG TargetLogonId, BYTE HotkeyVk, USHORT HotkeyModifiers) { return FALSE; } BOOL WINAPI FreeRDP_WTSStartRemoteControlSessionA(LPSTR pTargetServerName, ULONG TargetLogonId, BYTE HotkeyVk, USHORT HotkeyModifiers) { return FALSE; } BOOL WINAPI FreeRDP_WTSStartRemoteControlSessionExW(LPWSTR pTargetServerName, ULONG TargetLogonId, BYTE HotkeyVk, USHORT HotkeyModifiers, DWORD flags) { return FALSE; } BOOL WINAPI FreeRDP_WTSStartRemoteControlSessionExA(LPSTR pTargetServerName, ULONG TargetLogonId, BYTE HotkeyVk, USHORT HotkeyModifiers, DWORD flags) { return FALSE; } BOOL WINAPI FreeRDP_WTSStopRemoteControlSession(ULONG LogonId) { return FALSE; } BOOL WINAPI FreeRDP_WTSConnectSessionW(ULONG LogonId, ULONG TargetLogonId, PWSTR pPassword, BOOL bWait) { return FALSE; } BOOL WINAPI FreeRDP_WTSConnectSessionA(ULONG LogonId, ULONG TargetLogonId, PSTR pPassword, BOOL bWait) { return FALSE; } BOOL WINAPI FreeRDP_WTSEnumerateServersW(LPWSTR pDomainName, DWORD Reserved, DWORD Version, PWTS_SERVER_INFOW* ppServerInfo, DWORD* pCount) { return FALSE; } BOOL WINAPI FreeRDP_WTSEnumerateServersA(LPSTR pDomainName, DWORD Reserved, DWORD Version, PWTS_SERVER_INFOA* ppServerInfo, DWORD* pCount) { return FALSE; } HANDLE WINAPI FreeRDP_WTSOpenServerW(LPWSTR pServerName) { return INVALID_HANDLE_VALUE; } static void wts_virtual_channel_manager_free_message(void* obj) { wMessage* msg = (wMessage*)obj; if (msg) { BYTE* buffer = (BYTE*)msg->wParam; if (buffer) free(buffer); } } static void channel_free(rdpPeerChannel* channel); static void array_channel_free(void* ptr) { rdpPeerChannel* channel = ptr; channel_free(channel); } HANDLE WINAPI FreeRDP_WTSOpenServerA(LPSTR pServerName) { rdpContext* context; freerdp_peer* client; WTSVirtualChannelManager* vcm; HANDLE hServer = INVALID_HANDLE_VALUE; wObject queueCallbacks = { 0 }; context = (rdpContext*)pServerName; if (!context) return INVALID_HANDLE_VALUE; client = context->peer; if (!client) { SetLastError(ERROR_INVALID_DATA); return INVALID_HANDLE_VALUE; } vcm = (WTSVirtualChannelManager*)calloc(1, sizeof(WTSVirtualChannelManager)); if (!vcm) goto error_vcm_alloc; vcm->client = client; vcm->rdp = context->rdp; vcm->SessionId = g_SessionId++; if (!g_ServerHandles) { g_ServerHandles = HashTable_New(TRUE); if (!g_ServerHandles) goto error_free; } if (!HashTable_Insert(g_ServerHandles, (void*)(UINT_PTR)vcm->SessionId, (void*)vcm)) goto error_free; queueCallbacks.fnObjectFree = wts_virtual_channel_manager_free_message; vcm->queue = MessageQueue_New(&queueCallbacks); if (!vcm->queue) goto error_queue; vcm->dvc_channel_id_seq = 0; vcm->dynamicVirtualChannels = ArrayList_New(TRUE); if (!vcm->dynamicVirtualChannels) goto error_dynamicVirtualChannels; { wObject* obj = ArrayList_Object(vcm->dynamicVirtualChannels); WINPR_ASSERT(obj); obj->fnObjectFree = array_channel_free; } client->ReceiveChannelData = WTSReceiveChannelData; hServer = (HANDLE)vcm; return hServer; error_dynamicVirtualChannels: MessageQueue_Free(vcm->queue); error_queue: HashTable_Remove(g_ServerHandles, (void*)(UINT_PTR)vcm->SessionId); error_free: free(vcm); error_vcm_alloc: SetLastError(ERROR_NOT_ENOUGH_MEMORY); return INVALID_HANDLE_VALUE; } HANDLE WINAPI FreeRDP_WTSOpenServerExW(LPWSTR pServerName) { return INVALID_HANDLE_VALUE; } HANDLE WINAPI FreeRDP_WTSOpenServerExA(LPSTR pServerName) { return FreeRDP_WTSOpenServerA(pServerName); } VOID WINAPI FreeRDP_WTSCloseServer(HANDLE hServer) { WTSVirtualChannelManager* vcm; vcm = (WTSVirtualChannelManager*)hServer; if (vcm && (vcm != INVALID_HANDLE_VALUE)) { HashTable_Remove(g_ServerHandles, (void*)(UINT_PTR)vcm->SessionId); ArrayList_Free(vcm->dynamicVirtualChannels); if (vcm->drdynvc_channel) { WTSVirtualChannelClose(vcm->drdynvc_channel); vcm->drdynvc_channel = NULL; } MessageQueue_Free(vcm->queue); free(vcm); } } BOOL WINAPI FreeRDP_WTSEnumerateSessionsW(HANDLE hServer, DWORD Reserved, DWORD Version, PWTS_SESSION_INFOW* ppSessionInfo, DWORD* pCount) { return FALSE; } BOOL WINAPI FreeRDP_WTSEnumerateSessionsA(HANDLE hServer, DWORD Reserved, DWORD Version, PWTS_SESSION_INFOA* ppSessionInfo, DWORD* pCount) { return FALSE; } BOOL WINAPI FreeRDP_WTSEnumerateSessionsExW(HANDLE hServer, DWORD* pLevel, DWORD Filter, PWTS_SESSION_INFO_1W* ppSessionInfo, DWORD* pCount) { return FALSE; } BOOL WINAPI FreeRDP_WTSEnumerateSessionsExA(HANDLE hServer, DWORD* pLevel, DWORD Filter, PWTS_SESSION_INFO_1A* ppSessionInfo, DWORD* pCount) { return FALSE; } BOOL WINAPI FreeRDP_WTSEnumerateProcessesW(HANDLE hServer, DWORD Reserved, DWORD Version, PWTS_PROCESS_INFOW* ppProcessInfo, DWORD* pCount) { return FALSE; } BOOL WINAPI FreeRDP_WTSEnumerateProcessesA(HANDLE hServer, DWORD Reserved, DWORD Version, PWTS_PROCESS_INFOA* ppProcessInfo, DWORD* pCount) { return FALSE; } BOOL WINAPI FreeRDP_WTSTerminateProcess(HANDLE hServer, DWORD ProcessId, DWORD ExitCode) { return FALSE; } BOOL WINAPI FreeRDP_WTSQuerySessionInformationW(HANDLE hServer, DWORD SessionId, WTS_INFO_CLASS WTSInfoClass, LPWSTR* ppBuffer, DWORD* pBytesReturned) { return FALSE; } BOOL WINAPI FreeRDP_WTSQuerySessionInformationA(HANDLE hServer, DWORD SessionId, WTS_INFO_CLASS WTSInfoClass, LPSTR* ppBuffer, DWORD* pBytesReturned) { DWORD BytesReturned; WTSVirtualChannelManager* vcm; vcm = (WTSVirtualChannelManager*)hServer; if (!vcm) return FALSE; if (WTSInfoClass == WTSSessionId) { ULONG* pBuffer; BytesReturned = sizeof(ULONG); pBuffer = (ULONG*)malloc(sizeof(BytesReturned)); if (!pBuffer) { SetLastError(E_OUTOFMEMORY); return FALSE; } *pBuffer = vcm->SessionId; *ppBuffer = (LPSTR)pBuffer; *pBytesReturned = BytesReturned; return TRUE; } return FALSE; } BOOL WINAPI FreeRDP_WTSQueryUserConfigW(LPWSTR pServerName, LPWSTR pUserName, WTS_CONFIG_CLASS WTSConfigClass, LPWSTR* ppBuffer, DWORD* pBytesReturned) { return FALSE; } BOOL WINAPI FreeRDP_WTSQueryUserConfigA(LPSTR pServerName, LPSTR pUserName, WTS_CONFIG_CLASS WTSConfigClass, LPSTR* ppBuffer, DWORD* pBytesReturned) { return FALSE; } BOOL WINAPI FreeRDP_WTSSetUserConfigW(LPWSTR pServerName, LPWSTR pUserName, WTS_CONFIG_CLASS WTSConfigClass, LPWSTR pBuffer, DWORD DataLength) { return FALSE; } BOOL WINAPI FreeRDP_WTSSetUserConfigA(LPSTR pServerName, LPSTR pUserName, WTS_CONFIG_CLASS WTSConfigClass, LPSTR pBuffer, DWORD DataLength) { return FALSE; } BOOL WINAPI FreeRDP_WTSSendMessageW(HANDLE hServer, DWORD SessionId, LPWSTR pTitle, DWORD TitleLength, LPWSTR pMessage, DWORD MessageLength, DWORD Style, DWORD Timeout, DWORD* pResponse, BOOL bWait) { return FALSE; } BOOL WINAPI FreeRDP_WTSSendMessageA(HANDLE hServer, DWORD SessionId, LPSTR pTitle, DWORD TitleLength, LPSTR pMessage, DWORD MessageLength, DWORD Style, DWORD Timeout, DWORD* pResponse, BOOL bWait) { return FALSE; } BOOL WINAPI FreeRDP_WTSDisconnectSession(HANDLE hServer, DWORD SessionId, BOOL bWait) { return FALSE; } BOOL WINAPI FreeRDP_WTSLogoffSession(HANDLE hServer, DWORD SessionId, BOOL bWait) { return FALSE; } BOOL WINAPI FreeRDP_WTSShutdownSystem(HANDLE hServer, DWORD ShutdownFlag) { return FALSE; } BOOL WINAPI FreeRDP_WTSWaitSystemEvent(HANDLE hServer, DWORD EventMask, DWORD* pEventFlags) { return FALSE; } static void peer_channel_queue_free_message(void* obj) { wMessage* msg = (wMessage*)obj; if (!msg) return; free(msg->context); } void channel_free(rdpPeerChannel* channel) { if (!channel) return; MessageQueue_Free(channel->queue); Stream_Free(channel->receiveData, TRUE); free(channel); } static rdpPeerChannel* channel_new(WTSVirtualChannelManager* vcm, freerdp_peer* client, UINT32 ChannelId, UINT16 index, UINT16 type, size_t chunkSize) { wObject queueCallbacks = { 0 }; rdpPeerChannel* channel = (rdpPeerChannel*)calloc(1, sizeof(rdpPeerChannel)); WINPR_ASSERT(vcm); WINPR_ASSERT(client); if (!channel) goto fail; channel->vcm = vcm; channel->client = client; channel->channelId = ChannelId; channel->index = index; channel->channelType = type; channel->receiveData = Stream_New(NULL, chunkSize); if (!channel->receiveData) goto fail; queueCallbacks.fnObjectFree = peer_channel_queue_free_message; channel->queue = MessageQueue_New(&queueCallbacks); if (!channel->queue) goto fail; return channel; fail: channel_free(channel); return NULL; } HANDLE WINAPI FreeRDP_WTSVirtualChannelOpen(HANDLE hServer, DWORD SessionId, LPSTR pVirtualName) { size_t length; UINT32 index; rdpMcs* mcs; rdpMcsChannel* joined_channel = NULL; freerdp_peer* client; rdpPeerChannel* channel = NULL; WTSVirtualChannelManager* vcm; HANDLE hChannelHandle = NULL; rdpContext* context; vcm = (WTSVirtualChannelManager*)hServer; if (!vcm) { SetLastError(ERROR_INVALID_DATA); return NULL; } client = vcm->client; WINPR_ASSERT(client); context = client->context; WINPR_ASSERT(context); WINPR_ASSERT(context->rdp); WINPR_ASSERT(context->settings); mcs = context->rdp->mcs; WINPR_ASSERT(mcs); length = strlen(pVirtualName); if (length > 8) { SetLastError(ERROR_NOT_FOUND); return NULL; } for (index = 0; index < mcs->channelCount; index++) { rdpMcsChannel* mchannel = &mcs->channels[index]; if (mchannel->joined && (strncmp(mchannel->Name, pVirtualName, length) == 0)) { joined_channel = mchannel; break; } } if (!joined_channel) { SetLastError(ERROR_NOT_FOUND); return NULL; } channel = (rdpPeerChannel*)joined_channel->handle; if (!channel) { channel = channel_new(vcm, client, joined_channel->ChannelId, index, RDP_PEER_CHANNEL_TYPE_SVC, context->settings->VirtualChannelChunkSize); if (!channel) goto fail; joined_channel->handle = channel; } hChannelHandle = (HANDLE)channel; return hChannelHandle; fail: channel_free(channel); SetLastError(ERROR_NOT_ENOUGH_MEMORY); return NULL; } HANDLE WINAPI FreeRDP_WTSVirtualChannelOpenEx(DWORD SessionId, LPSTR pVirtualName, DWORD flags) { UINT32 index; wStream* s = NULL; rdpMcs* mcs; BOOL joined = FALSE; freerdp_peer* client; rdpPeerChannel* channel = NULL; ULONG written; WTSVirtualChannelManager* vcm = NULL; if (SessionId == WTS_CURRENT_SESSION) return NULL; vcm = (WTSVirtualChannelManager*)HashTable_GetItemValue(g_ServerHandles, (void*)(UINT_PTR)SessionId); if (!vcm) return NULL; if (!(flags & WTS_CHANNEL_OPTION_DYNAMIC)) { return FreeRDP_WTSVirtualChannelOpen((HANDLE)vcm, SessionId, pVirtualName); } client = vcm->client; mcs = client->context->rdp->mcs; for (index = 0; index < mcs->channelCount; index++) { rdpMcsChannel* mchannel = &mcs->channels[index]; if (mchannel->joined && (strncmp(mchannel->Name, DRDYNVC_SVC_CHANNEL_NAME, CHANNEL_NAME_LEN + 1) == 0)) { joined = TRUE; break; } } if (!joined) { SetLastError(ERROR_NOT_FOUND); return NULL; } if (!vcm->drdynvc_channel || (vcm->drdynvc_state != DRDYNVC_STATE_READY)) { SetLastError(ERROR_NOT_READY); return NULL; } WINPR_ASSERT(client); WINPR_ASSERT(client->context); WINPR_ASSERT(client->context->settings); channel = channel_new(vcm, client, 0, 0, RDP_PEER_CHANNEL_TYPE_DVC, client->context->settings->VirtualChannelChunkSize); if (!channel) { SetLastError(ERROR_NOT_ENOUGH_MEMORY); return NULL; } channel->channelId = InterlockedIncrement(&vcm->dvc_channel_id_seq); if (!ArrayList_Append(vcm->dynamicVirtualChannels, channel)) { channel_free(channel); channel = NULL; goto fail; } s = Stream_New(NULL, 64); if (!s) goto fail; if (!wts_write_drdynvc_create_request(s, channel->channelId, pVirtualName)) goto fail; if (!WTSVirtualChannelWrite(vcm->drdynvc_channel, (PCHAR)Stream_Buffer(s), Stream_GetPosition(s), &written)) goto fail; Stream_Free(s, TRUE); return channel; fail: Stream_Free(s, TRUE); if (channel) ArrayList_Remove(vcm->dynamicVirtualChannels, channel); SetLastError(ERROR_NOT_ENOUGH_MEMORY); return NULL; } BOOL WINAPI FreeRDP_WTSVirtualChannelClose(HANDLE hChannelHandle) { wStream* s; rdpMcs* mcs; rdpPeerChannel* channel = (rdpPeerChannel*)hChannelHandle; BOOL ret = TRUE; if (channel) { WTSVirtualChannelManager* vcm = channel->vcm; WINPR_ASSERT(vcm); WINPR_ASSERT(vcm->client); WINPR_ASSERT(vcm->client->context); WINPR_ASSERT(vcm->client->context->rdp); mcs = vcm->client->context->rdp->mcs; if (channel->channelType == RDP_PEER_CHANNEL_TYPE_SVC) { if (channel->index < mcs->channelCount) { rdpMcsChannel* cur = &mcs->channels[channel->index]; rdpPeerChannel* peerChannel = (rdpPeerChannel*)cur->handle; if (peerChannel) channel_free(peerChannel); cur->handle = NULL; } } else { if (channel->dvc_open_state == DVC_OPEN_STATE_SUCCEEDED) { ULONG written; s = Stream_New(NULL, 8); if (!s) { WLog_ERR(TAG, "Stream_New failed!"); ret = FALSE; } else { wts_write_drdynvc_header(s, CLOSE_REQUEST_PDU, channel->channelId); ret = WTSVirtualChannelWrite(vcm->drdynvc_channel, (PCHAR)Stream_Buffer(s), Stream_GetPosition(s), &written); Stream_Free(s, TRUE); } } ArrayList_Remove(vcm->dynamicVirtualChannels, channel); } } return ret; } BOOL WINAPI FreeRDP_WTSVirtualChannelRead(HANDLE hChannelHandle, ULONG TimeOut, PCHAR Buffer, ULONG BufferSize, PULONG pBytesRead) { BYTE* buffer; wMessage message; wtsChannelMessage* messageCtx; rdpPeerChannel* channel = (rdpPeerChannel*)hChannelHandle; WINPR_ASSERT(channel); if (!MessageQueue_Peek(channel->queue, &message, FALSE)) { SetLastError(ERROR_NO_DATA); *pBytesRead = 0; return FALSE; } messageCtx = (wtsChannelMessage*)(UINT_PTR)message.context; if (messageCtx == NULL) return FALSE; buffer = (BYTE*)(messageCtx + 1); *pBytesRead = messageCtx->length - messageCtx->offset; if (Buffer == NULL || BufferSize == 0) { return TRUE; } if (*pBytesRead > BufferSize) *pBytesRead = BufferSize; CopyMemory(Buffer, buffer + messageCtx->offset, *pBytesRead); messageCtx->offset += *pBytesRead; if (messageCtx->offset >= messageCtx->length) { MessageQueue_Peek(channel->queue, &message, TRUE); peer_channel_queue_free_message(&message); } return TRUE; } BOOL WINAPI FreeRDP_WTSVirtualChannelWrite(HANDLE hChannelHandle, PCHAR Buffer, ULONG Length, PULONG pBytesWritten) { wStream* s; int cbLen; int cbChId; int first; BYTE* buffer; UINT32 length; UINT32 written; UINT32 totalWritten = 0; rdpPeerChannel* channel = (rdpPeerChannel*)hChannelHandle; BOOL ret = TRUE; if (!channel) return FALSE; WINPR_ASSERT(channel->vcm); if (channel->channelType == RDP_PEER_CHANNEL_TYPE_SVC) { length = Length; buffer = (BYTE*)malloc(length); if (!buffer) { SetLastError(E_OUTOFMEMORY); return FALSE; } CopyMemory(buffer, Buffer, length); totalWritten = Length; ret = wts_queue_send_item(channel, buffer, length); } else if (!channel->vcm->drdynvc_channel || (channel->vcm->drdynvc_state != DRDYNVC_STATE_READY)) { DEBUG_DVC("drdynvc not ready"); return FALSE; } else { rdpContext* context; first = TRUE; WINPR_ASSERT(channel->client); context = channel->client->context; WINPR_ASSERT(context); WINPR_ASSERT(context->settings); while (Length > 0) { s = Stream_New(NULL, context->settings->VirtualChannelChunkSize); if (!s) { WLog_ERR(TAG, "Stream_New failed!"); SetLastError(E_OUTOFMEMORY); return FALSE; } buffer = Stream_Buffer(s); Stream_Seek_UINT8(s); cbChId = wts_write_variable_uint(s, channel->channelId); if (first && (Length > (UINT32)Stream_GetRemainingLength(s))) { cbLen = wts_write_variable_uint(s, Length); buffer[0] = (DATA_FIRST_PDU << 4) | (cbLen << 2) | cbChId; } else { buffer[0] = (DATA_PDU << 4) | cbChId; } first = FALSE; written = Stream_GetRemainingLength(s); if (written > Length) written = Length; Stream_Write(s, Buffer, written); length = Stream_GetPosition(s); Stream_Free(s, FALSE); Length -= written; Buffer += written; totalWritten += written; ret = wts_queue_send_item(channel->vcm->drdynvc_channel, buffer, length); } } if (pBytesWritten) *pBytesWritten = totalWritten; return ret; } BOOL WINAPI FreeRDP_WTSVirtualChannelPurgeInput(HANDLE hChannelHandle) { return TRUE; } BOOL WINAPI FreeRDP_WTSVirtualChannelPurgeOutput(HANDLE hChannelHandle) { return TRUE; } BOOL WINAPI FreeRDP_WTSVirtualChannelQuery(HANDLE hChannelHandle, WTS_VIRTUAL_CLASS WtsVirtualClass, PVOID* ppBuffer, DWORD* pBytesReturned) { void* pfd; BOOL bval; void* fds[10] = { 0 }; HANDLE hEvent; int fds_count = 0; BOOL status = FALSE; rdpPeerChannel* channel = (rdpPeerChannel*)hChannelHandle; WINPR_ASSERT(channel); hEvent = MessageQueue_Event(channel->queue); switch ((UINT32)WtsVirtualClass) { case WTSVirtualFileHandle: pfd = GetEventWaitObject(hEvent); if (pfd) { fds[fds_count] = pfd; (fds_count)++; } *ppBuffer = malloc(sizeof(void*)); if (!*ppBuffer) { SetLastError(E_OUTOFMEMORY); } else { CopyMemory(*ppBuffer, &fds[0], sizeof(void*)); *pBytesReturned = sizeof(void*); status = TRUE; } break; case WTSVirtualEventHandle: *ppBuffer = malloc(sizeof(HANDLE)); if (!*ppBuffer) { SetLastError(E_OUTOFMEMORY); } else { CopyMemory(*ppBuffer, &(hEvent), sizeof(HANDLE)); *pBytesReturned = sizeof(void*); status = TRUE; } break; case WTSVirtualChannelReady: if (channel->channelType == RDP_PEER_CHANNEL_TYPE_SVC) { bval = TRUE; status = TRUE; } else { switch (channel->dvc_open_state) { case DVC_OPEN_STATE_NONE: bval = FALSE; status = TRUE; break; case DVC_OPEN_STATE_SUCCEEDED: bval = TRUE; status = TRUE; break; default: bval = FALSE; status = FALSE; break; } } *ppBuffer = malloc(sizeof(BOOL)); if (!*ppBuffer) { SetLastError(E_OUTOFMEMORY); status = FALSE; } else { CopyMemory(*ppBuffer, &bval, sizeof(BOOL)); *pBytesReturned = sizeof(BOOL); } break; default: break; } return status; } VOID WINAPI FreeRDP_WTSFreeMemory(PVOID pMemory) { free(pMemory); } BOOL WINAPI FreeRDP_WTSFreeMemoryExW(WTS_TYPE_CLASS WTSTypeClass, PVOID pMemory, ULONG NumberOfEntries) { return FALSE; } BOOL WINAPI FreeRDP_WTSFreeMemoryExA(WTS_TYPE_CLASS WTSTypeClass, PVOID pMemory, ULONG NumberOfEntries) { return FALSE; } BOOL WINAPI FreeRDP_WTSRegisterSessionNotification(HWND hWnd, DWORD dwFlags) { return FALSE; } BOOL WINAPI FreeRDP_WTSUnRegisterSessionNotification(HWND hWnd) { return FALSE; } BOOL WINAPI FreeRDP_WTSRegisterSessionNotificationEx(HANDLE hServer, HWND hWnd, DWORD dwFlags) { return FALSE; } BOOL WINAPI FreeRDP_WTSUnRegisterSessionNotificationEx(HANDLE hServer, HWND hWnd) { return FALSE; } BOOL WINAPI FreeRDP_WTSQueryUserToken(ULONG SessionId, PHANDLE phToken) { return FALSE; } BOOL WINAPI FreeRDP_WTSEnumerateProcessesExW(HANDLE hServer, DWORD* pLevel, DWORD SessionId, LPWSTR* ppProcessInfo, DWORD* pCount) { return FALSE; } BOOL WINAPI FreeRDP_WTSEnumerateProcessesExA(HANDLE hServer, DWORD* pLevel, DWORD SessionId, LPSTR* ppProcessInfo, DWORD* pCount) { return FALSE; } BOOL WINAPI FreeRDP_WTSEnumerateListenersW(HANDLE hServer, PVOID pReserved, DWORD Reserved, PWTSLISTENERNAMEW pListeners, DWORD* pCount) { return FALSE; } BOOL WINAPI FreeRDP_WTSEnumerateListenersA(HANDLE hServer, PVOID pReserved, DWORD Reserved, PWTSLISTENERNAMEA pListeners, DWORD* pCount) { return FALSE; } BOOL WINAPI FreeRDP_WTSQueryListenerConfigW(HANDLE hServer, PVOID pReserved, DWORD Reserved, LPWSTR pListenerName, PWTSLISTENERCONFIGW pBuffer) { return FALSE; } BOOL WINAPI FreeRDP_WTSQueryListenerConfigA(HANDLE hServer, PVOID pReserved, DWORD Reserved, LPSTR pListenerName, PWTSLISTENERCONFIGA pBuffer) { return FALSE; } BOOL WINAPI FreeRDP_WTSCreateListenerW(HANDLE hServer, PVOID pReserved, DWORD Reserved, LPWSTR pListenerName, PWTSLISTENERCONFIGW pBuffer, DWORD flag) { return FALSE; } BOOL WINAPI FreeRDP_WTSCreateListenerA(HANDLE hServer, PVOID pReserved, DWORD Reserved, LPSTR pListenerName, PWTSLISTENERCONFIGA pBuffer, DWORD flag) { return FALSE; } BOOL WINAPI FreeRDP_WTSSetListenerSecurityW(HANDLE hServer, PVOID pReserved, DWORD Reserved, LPWSTR pListenerName, SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR pSecurityDescriptor) { return FALSE; } BOOL WINAPI FreeRDP_WTSSetListenerSecurityA(HANDLE hServer, PVOID pReserved, DWORD Reserved, LPSTR pListenerName, SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR pSecurityDescriptor) { return FALSE; } BOOL WINAPI FreeRDP_WTSGetListenerSecurityW(HANDLE hServer, PVOID pReserved, DWORD Reserved, LPWSTR pListenerName, SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR pSecurityDescriptor, DWORD nLength, LPDWORD lpnLengthNeeded) { return FALSE; } BOOL WINAPI FreeRDP_WTSGetListenerSecurityA(HANDLE hServer, PVOID pReserved, DWORD Reserved, LPSTR pListenerName, SECURITY_INFORMATION SecurityInformation, PSECURITY_DESCRIPTOR pSecurityDescriptor, DWORD nLength, LPDWORD lpnLengthNeeded) { return FALSE; } BOOL CDECL FreeRDP_WTSEnableChildSessions(BOOL bEnable) { return FALSE; } BOOL CDECL FreeRDP_WTSIsChildSessionsEnabled(PBOOL pbEnabled) { return FALSE; } BOOL CDECL FreeRDP_WTSGetChildSessionId(PULONG pSessionId) { return FALSE; } DWORD WINAPI FreeRDP_WTSGetActiveConsoleSessionId(void) { return 0xFFFFFFFF; } BOOL WINAPI FreeRDP_WTSLogoffUser(HANDLE hServer) { return FALSE; } BOOL WINAPI FreeRDP_WTSLogonUser(HANDLE hServer, LPCSTR username, LPCSTR password, LPCSTR domain) { return FALSE; }