/** * FreeRDP: A Remote Desktop Protocol Implementation * Device Redirection Virtual Channel * * Copyright 2010-2011 Vic Lee * Copyright 2010-2012 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. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include <stdio.h> #include <stdlib.h> #include <string.h> #include <winpr/crt.h> #include <winpr/stream.h> #include "rdpdr_main.h" #include "devman.h" #include "irp.h" /** * Function description * * @return 0 on success, otherwise a Win32 error code */ static UINT irp_free(IRP* irp) { if (!irp) return CHANNEL_RC_OK; Stream_Free(irp->input, TRUE); Stream_Free(irp->output, TRUE); _aligned_free(irp); return CHANNEL_RC_OK; } /** * Function description * * @return 0 on success, otherwise a Win32 error code */ static UINT irp_complete(IRP* irp) { size_t pos; rdpdrPlugin* rdpdr; UINT error; rdpdr = (rdpdrPlugin*)irp->devman->plugin; pos = Stream_GetPosition(irp->output); Stream_SetPosition(irp->output, RDPDR_DEVICE_IO_RESPONSE_LENGTH - 4); Stream_Write_UINT32(irp->output, irp->IoStatus); /* IoStatus (4 bytes) */ Stream_SetPosition(irp->output, pos); error = rdpdr_send(rdpdr, irp->output); irp->output = NULL; irp_free(irp); return error; } IRP* irp_new(DEVMAN* devman, wStream* s, UINT* error) { IRP* irp; DEVICE* device; UINT32 DeviceId; if (Stream_GetRemainingLength(s) < 20) { if (error) *error = ERROR_INVALID_DATA; return NULL; } Stream_Read_UINT32(s, DeviceId); /* DeviceId (4 bytes) */ device = devman_get_device_by_id(devman, DeviceId); if (!device) { WLog_WARN(TAG, "devman_get_device_by_id failed!"); if (error) *error = CHANNEL_RC_OK; return NULL; }; irp = (IRP*)_aligned_malloc(sizeof(IRP), MEMORY_ALLOCATION_ALIGNMENT); if (!irp) { WLog_ERR(TAG, "_aligned_malloc failed!"); if (error) *error = CHANNEL_RC_NO_MEMORY; return NULL; } ZeroMemory(irp, sizeof(IRP)); irp->input = s; irp->device = device; irp->devman = devman; Stream_Read_UINT32(s, irp->FileId); /* FileId (4 bytes) */ Stream_Read_UINT32(s, irp->CompletionId); /* CompletionId (4 bytes) */ Stream_Read_UINT32(s, irp->MajorFunction); /* MajorFunction (4 bytes) */ Stream_Read_UINT32(s, irp->MinorFunction); /* MinorFunction (4 bytes) */ irp->output = Stream_New(NULL, 256); if (!irp->output) { WLog_ERR(TAG, "Stream_New failed!"); _aligned_free(irp); if (error) *error = CHANNEL_RC_NO_MEMORY; return NULL; } Stream_Write_UINT16(irp->output, RDPDR_CTYP_CORE); /* Component (2 bytes) */ Stream_Write_UINT16(irp->output, PAKID_CORE_DEVICE_IOCOMPLETION); /* PacketId (2 bytes) */ Stream_Write_UINT32(irp->output, DeviceId); /* DeviceId (4 bytes) */ Stream_Write_UINT32(irp->output, irp->CompletionId); /* CompletionId (4 bytes) */ Stream_Write_UINT32(irp->output, 0); /* IoStatus (4 bytes) */ irp->Complete = irp_complete; irp->Discard = irp_free; irp->thread = NULL; irp->cancelled = FALSE; if (error) *error = CHANNEL_RC_OK; return irp; }