FreeRDP/channels/rdpdr/client/irp.c
2012-10-09 03:26:39 -04:00

107 lines
2.8 KiB
C

/**
* 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>
*
* 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 <freerdp/utils/memory.h>
#include <freerdp/utils/stream.h>
#include <freerdp/utils/svc_plugin.h>
#include "rdpdr_main.h"
#include "devman.h"
#include "irp.h"
static void irp_free(IRP* irp)
{
DEBUG_SVC("DeviceId %d FileId %d CompletionId %d", irp->device->id, irp->FileId, irp->CompletionId);
stream_free(irp->input);
stream_free(irp->output);
_aligned_free(irp);
}
static void irp_complete(IRP* irp)
{
int pos;
DEBUG_SVC("DeviceId %d FileId %d CompletionId %d", irp->device->id, irp->FileId, irp->CompletionId);
pos = stream_get_pos(irp->output);
stream_set_pos(irp->output, 12);
stream_write_UINT32(irp->output, irp->IoStatus);
stream_set_pos(irp->output, pos);
svc_plugin_send(irp->devman->plugin, irp->output);
irp->output = NULL;
irp_free(irp);
}
IRP* irp_new(DEVMAN* devman, STREAM* data_in)
{
IRP* irp;
UINT32 DeviceId;
DEVICE* device;
stream_read_UINT32(data_in, DeviceId);
device = devman_get_device_by_id(devman, DeviceId);
if (device == NULL)
{
DEBUG_WARN("unknown DeviceId %d", DeviceId);
return NULL;
}
irp = (IRP*) _aligned_malloc(sizeof(IRP), MEMORY_ALLOCATION_ALIGNMENT);
ZeroMemory(irp, sizeof(IRP));
irp->device = device;
irp->devman = devman;
stream_read_UINT32(data_in, irp->FileId);
stream_read_UINT32(data_in, irp->CompletionId);
stream_read_UINT32(data_in, irp->MajorFunction);
stream_read_UINT32(data_in, irp->MinorFunction);
irp->input = data_in;
irp->output = stream_new(256);
stream_write_UINT16(irp->output, RDPDR_CTYP_CORE);
stream_write_UINT16(irp->output, PAKID_CORE_DEVICE_IOCOMPLETION);
stream_write_UINT32(irp->output, DeviceId);
stream_write_UINT32(irp->output, irp->CompletionId);
stream_seek_UINT32(irp->output); /* IoStatus */
irp->Complete = irp_complete;
irp->Discard = irp_free;
DEBUG_SVC("DeviceId %d FileId %d CompletionId %d MajorFunction 0x%X MinorFunction 0x%x",
irp->device->id, irp->FileId, irp->CompletionId, irp->MajorFunction, irp->MinorFunction);
return irp;
}