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drive_main.c
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drive_main.c
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/**
* FreeRDP: A Remote Desktop Protocol Implementation
* File System 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>
* Copyright 2016 David PHAM-VAN <d.phamvan@inuvika.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 <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <winpr/crt.h>
#include <winpr/path.h>
#include <winpr/file.h>
#include <winpr/string.h>
#include <winpr/synch.h>
#include <winpr/thread.h>
#include <winpr/stream.h>
#include <winpr/environment.h>
#include <winpr/interlocked.h>
#include <winpr/collections.h>
#include <winpr/shell.h>
#include <freerdp/channels/rdpdr.h>
#include "drive_file.h"
typedef struct _DRIVE_DEVICE DRIVE_DEVICE;
struct _DRIVE_DEVICE
{
DEVICE device;
WCHAR* path;
BOOL automount;
UINT32 PathLength;
wListDictionary* files;
HANDLE thread;
wMessageQueue* IrpQueue;
DEVMAN* devman;
rdpContext* rdpcontext;
};
static UINT sys_code_page = 0;
static DWORD drive_map_windows_err(DWORD fs_errno)
{
DWORD rc;
/* try to return NTSTATUS version of error code */
switch (fs_errno)
{
case STATUS_SUCCESS:
rc = STATUS_SUCCESS;
break;
case ERROR_ACCESS_DENIED:
case ERROR_SHARING_VIOLATION:
rc = STATUS_ACCESS_DENIED;
break;
case ERROR_FILE_NOT_FOUND:
rc = STATUS_NO_SUCH_FILE;
break;
case ERROR_BUSY_DRIVE:
rc = STATUS_DEVICE_BUSY;
break;
case ERROR_INVALID_DRIVE:
rc = STATUS_NO_SUCH_DEVICE;
break;
case ERROR_NOT_READY:
rc = STATUS_NO_SUCH_DEVICE;
break;
case ERROR_FILE_EXISTS:
case ERROR_ALREADY_EXISTS:
rc = STATUS_OBJECT_NAME_COLLISION;
break;
case ERROR_INVALID_NAME:
rc = STATUS_NO_SUCH_FILE;
break;
case ERROR_INVALID_HANDLE:
rc = STATUS_INVALID_HANDLE;
break;
case ERROR_NO_MORE_FILES:
rc = STATUS_NO_MORE_FILES;
break;
case ERROR_DIRECTORY:
rc = STATUS_NOT_A_DIRECTORY;
break;
case ERROR_PATH_NOT_FOUND:
rc = STATUS_OBJECT_PATH_NOT_FOUND;
break;
default:
rc = STATUS_UNSUCCESSFUL;
WLog_ERR(TAG, "Error code not found: %" PRIu32 "", fs_errno);
break;
}
return rc;
}
static DRIVE_FILE* drive_get_file_by_id(DRIVE_DEVICE* drive, UINT32 id)
{
DRIVE_FILE* file = NULL;
void* key = (void*)(size_t)id;
if (!drive)
return NULL;
file = (DRIVE_FILE*)ListDictionary_GetItemValue(drive->files, key);
return file;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT drive_process_irp_create(DRIVE_DEVICE* drive, IRP* irp)
{
UINT32 FileId;
DRIVE_FILE* file;
BYTE Information;
UINT32 FileAttributes;
UINT32 SharedAccess;
UINT32 DesiredAccess;
UINT32 CreateDisposition;
UINT32 CreateOptions;
UINT32 PathLength;
UINT64 allocationSize;
const WCHAR* path;
if (!drive || !irp || !irp->devman || !irp->Complete)
return ERROR_INVALID_PARAMETER;
if (Stream_GetRemainingLength(irp->input) < 6 * 4 + 8)
return ERROR_INVALID_DATA;
Stream_Read_UINT32(irp->input, DesiredAccess);
Stream_Read_UINT64(irp->input, allocationSize);
Stream_Read_UINT32(irp->input, FileAttributes);
Stream_Read_UINT32(irp->input, SharedAccess);
Stream_Read_UINT32(irp->input, CreateDisposition);
Stream_Read_UINT32(irp->input, CreateOptions);
Stream_Read_UINT32(irp->input, PathLength);
if (Stream_GetRemainingLength(irp->input) < PathLength)
return ERROR_INVALID_DATA;
path = (const WCHAR*)Stream_Pointer(irp->input);
FileId = irp->devman->id_sequence++;
file = drive_file_new(drive->path, path, PathLength, FileId, DesiredAccess, CreateDisposition,
CreateOptions, FileAttributes, SharedAccess);
if (!file)
{
irp->IoStatus = drive_map_windows_err(GetLastError());
FileId = 0;
Information = 0;
}
else
{
void* key = (void*)(size_t)file->id;
if (!ListDictionary_Add(drive->files, key, file))
{
WLog_ERR(TAG, "ListDictionary_Add failed!");
return ERROR_INTERNAL_ERROR;
}
switch (CreateDisposition)
{
case FILE_SUPERSEDE:
case FILE_OPEN:
case FILE_CREATE:
case FILE_OVERWRITE:
Information = FILE_SUPERSEDED;
break;
case FILE_OPEN_IF:
Information = FILE_OPENED;
break;
case FILE_OVERWRITE_IF:
Information = FILE_OVERWRITTEN;
break;
default:
Information = 0;
break;
}
}
Stream_Write_UINT32(irp->output, FileId);
Stream_Write_UINT8(irp->output, Information);
return irp->Complete(irp);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT drive_process_irp_close(DRIVE_DEVICE* drive, IRP* irp)
{
void* key;
DRIVE_FILE* file;
if (!drive || !irp || !irp->Complete || !irp->output)
return ERROR_INVALID_PARAMETER;
file = drive_get_file_by_id(drive, irp->FileId);
key = (void*)(size_t)irp->FileId;
if (!file)
irp->IoStatus = STATUS_UNSUCCESSFUL;
else
{
ListDictionary_Remove(drive->files, key);
if (drive_file_free(file))
irp->IoStatus = STATUS_SUCCESS;
else
irp->IoStatus = drive_map_windows_err(GetLastError());
}
Stream_Zero(irp->output, 5); /* Padding(5) */
return irp->Complete(irp);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT drive_process_irp_read(DRIVE_DEVICE* drive, IRP* irp)
{
DRIVE_FILE* file;
UINT32 Length;
UINT64 Offset;
if (!drive || !irp || !irp->output || !irp->Complete)
return ERROR_INVALID_PARAMETER;
if (Stream_GetRemainingLength(irp->input) < 12)
return ERROR_INVALID_DATA;
Stream_Read_UINT32(irp->input, Length);
Stream_Read_UINT64(irp->input, Offset);
file = drive_get_file_by_id(drive, irp->FileId);
if (!file)
{
irp->IoStatus = STATUS_UNSUCCESSFUL;
Length = 0;
}
else if (!drive_file_seek(file, Offset))
{
irp->IoStatus = drive_map_windows_err(GetLastError());
Length = 0;
}
if (!Stream_EnsureRemainingCapacity(irp->output, Length + 4))
{
WLog_ERR(TAG, "Stream_EnsureRemainingCapacity failed!");
return ERROR_INTERNAL_ERROR;
}
else if (Length == 0)
Stream_Write_UINT32(irp->output, 0);
else
{
BYTE* buffer = Stream_Pointer(irp->output) + sizeof(UINT32);
if (!drive_file_read(file, buffer, &Length))
{
irp->IoStatus = drive_map_windows_err(GetLastError());
Stream_Write_UINT32(irp->output, 0);
}
else
{
Stream_Write_UINT32(irp->output, Length);
Stream_Seek(irp->output, Length);
}
}
return irp->Complete(irp);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT drive_process_irp_write(DRIVE_DEVICE* drive, IRP* irp)
{
DRIVE_FILE* file;
UINT32 Length;
UINT64 Offset;
void* ptr;
if (!drive || !irp || !irp->input || !irp->output || !irp->Complete)
return ERROR_INVALID_PARAMETER;
if (Stream_GetRemainingLength(irp->input) < 32)
return ERROR_INVALID_DATA;
Stream_Read_UINT32(irp->input, Length);
Stream_Read_UINT64(irp->input, Offset);
Stream_Seek(irp->input, 20); /* Padding */
ptr = Stream_Pointer(irp->input);
if (!Stream_SafeSeek(irp->input, Length))
return ERROR_INVALID_DATA;
file = drive_get_file_by_id(drive, irp->FileId);
if (!file)
{
irp->IoStatus = STATUS_UNSUCCESSFUL;
Length = 0;
}
else if (!drive_file_seek(file, Offset))
{
irp->IoStatus = drive_map_windows_err(GetLastError());
Length = 0;
}
else if (!drive_file_write(file, ptr, Length))
{
irp->IoStatus = drive_map_windows_err(GetLastError());
Length = 0;
}
Stream_Write_UINT32(irp->output, Length);
Stream_Write_UINT8(irp->output, 0); /* Padding */
return irp->Complete(irp);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT drive_process_irp_query_information(DRIVE_DEVICE* drive, IRP* irp)
{
DRIVE_FILE* file;
UINT32 FsInformationClass;
if (!drive || !irp || !irp->Complete)
return ERROR_INVALID_PARAMETER;
if (Stream_GetRemainingLength(irp->input) < 4)
return ERROR_INVALID_DATA;
Stream_Read_UINT32(irp->input, FsInformationClass);
file = drive_get_file_by_id(drive, irp->FileId);
if (!file)
{
irp->IoStatus = STATUS_UNSUCCESSFUL;
}
else if (!drive_file_query_information(file, FsInformationClass, irp->output))
{
irp->IoStatus = drive_map_windows_err(GetLastError());
}
return irp->Complete(irp);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT drive_process_irp_set_information(DRIVE_DEVICE* drive, IRP* irp)
{
DRIVE_FILE* file;
UINT32 FsInformationClass;
UINT32 Length;
if (!drive || !irp || !irp->Complete || !irp->input || !irp->output)
return ERROR_INVALID_PARAMETER;
if (Stream_GetRemainingLength(irp->input) < 32)
return ERROR_INVALID_DATA;
Stream_Read_UINT32(irp->input, FsInformationClass);
Stream_Read_UINT32(irp->input, Length);
Stream_Seek(irp->input, 24); /* Padding */
file = drive_get_file_by_id(drive, irp->FileId);
if (!file)
{
irp->IoStatus = STATUS_UNSUCCESSFUL;
}
else if (!drive_file_set_information(file, FsInformationClass, Length, irp->input))
{
irp->IoStatus = drive_map_windows_err(GetLastError());
}
if (file && file->is_dir && !PathIsDirectoryEmptyW(file->fullpath))
irp->IoStatus = STATUS_DIRECTORY_NOT_EMPTY;
Stream_Write_UINT32(irp->output, Length);
return irp->Complete(irp);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT drive_process_irp_query_volume_information(DRIVE_DEVICE* drive, IRP* irp)
{
UINT32 FsInformationClass;
wStream* output = NULL;
char* volumeLabel = { "FREERDP" };
char* diskType = { "FAT32" };
WCHAR* outStr = NULL;
int length;
DWORD lpSectorsPerCluster;
DWORD lpBytesPerSector;
DWORD lpNumberOfFreeClusters;
DWORD lpTotalNumberOfClusters;
WIN32_FILE_ATTRIBUTE_DATA wfad;
if (!drive || !irp)
return ERROR_INVALID_PARAMETER;
output = irp->output;
if (Stream_GetRemainingLength(irp->input) < 4)
return ERROR_INVALID_DATA;
Stream_Read_UINT32(irp->input, FsInformationClass);
GetDiskFreeSpaceW(drive->path, &lpSectorsPerCluster, &lpBytesPerSector, &lpNumberOfFreeClusters,
&lpTotalNumberOfClusters);
switch (FsInformationClass)
{
case FileFsVolumeInformation:
/* http://msdn.microsoft.com/en-us/library/cc232108.aspx */
if ((length = ConvertToUnicode(sys_code_page, 0, volumeLabel, -1, &outStr, 0) * 2) <= 0)
{
WLog_ERR(TAG, "ConvertToUnicode failed!");
return CHANNEL_RC_NO_MEMORY;
}
Stream_Write_UINT32(output, 17 + length); /* Length */
if (!Stream_EnsureRemainingCapacity(output, 17 + length))
{
WLog_ERR(TAG, "Stream_EnsureRemainingCapacity failed!");
free(outStr);
return CHANNEL_RC_NO_MEMORY;
}
GetFileAttributesExW(drive->path, GetFileExInfoStandard, &wfad);
Stream_Write_UINT32(output, wfad.ftCreationTime.dwLowDateTime); /* VolumeCreationTime */
Stream_Write_UINT32(output,
wfad.ftCreationTime.dwHighDateTime); /* VolumeCreationTime */
Stream_Write_UINT32(output, lpNumberOfFreeClusters & 0xffff); /* VolumeSerialNumber */
Stream_Write_UINT32(output, length); /* VolumeLabelLength */
Stream_Write_UINT8(output, 0); /* SupportsObjects */
/* Reserved(1), MUST NOT be added! */
Stream_Write(output, outStr, length); /* VolumeLabel (Unicode) */
free(outStr);
break;
case FileFsSizeInformation:
/* http://msdn.microsoft.com/en-us/library/cc232107.aspx */
Stream_Write_UINT32(output, 24); /* Length */
if (!Stream_EnsureRemainingCapacity(output, 24))
{
WLog_ERR(TAG, "Stream_EnsureRemainingCapacity failed!");
return CHANNEL_RC_NO_MEMORY;
}
Stream_Write_UINT64(output, lpTotalNumberOfClusters); /* TotalAllocationUnits */
Stream_Write_UINT64(output, lpNumberOfFreeClusters); /* AvailableAllocationUnits */
Stream_Write_UINT32(output, lpSectorsPerCluster); /* SectorsPerAllocationUnit */
Stream_Write_UINT32(output, lpBytesPerSector); /* BytesPerSector */
break;
case FileFsAttributeInformation:
/* http://msdn.microsoft.com/en-us/library/cc232101.aspx */
if ((length = ConvertToUnicode(sys_code_page, 0, diskType, -1, &outStr, 0) * 2) <= 0)
{
WLog_ERR(TAG, "ConvertToUnicode failed!");
return CHANNEL_RC_NO_MEMORY;
}
Stream_Write_UINT32(output, 12 + length); /* Length */
if (!Stream_EnsureRemainingCapacity(output, 12 + length))
{
free(outStr);
WLog_ERR(TAG, "Stream_EnsureRemainingCapacity failed!");
return CHANNEL_RC_NO_MEMORY;
}
Stream_Write_UINT32(output, FILE_CASE_SENSITIVE_SEARCH | FILE_CASE_PRESERVED_NAMES |
FILE_UNICODE_ON_DISK); /* FileSystemAttributes */
Stream_Write_UINT32(output, MAX_PATH); /* MaximumComponentNameLength */
Stream_Write_UINT32(output, length); /* FileSystemNameLength */
Stream_Write(output, outStr, length); /* FileSystemName (Unicode) */
free(outStr);
break;
case FileFsFullSizeInformation:
/* http://msdn.microsoft.com/en-us/library/cc232104.aspx */
Stream_Write_UINT32(output, 32); /* Length */
if (!Stream_EnsureRemainingCapacity(output, 32))
{
WLog_ERR(TAG, "Stream_EnsureRemainingCapacity failed!");
return CHANNEL_RC_NO_MEMORY;
}
Stream_Write_UINT64(output, lpTotalNumberOfClusters); /* TotalAllocationUnits */
Stream_Write_UINT64(output,
lpNumberOfFreeClusters); /* CallerAvailableAllocationUnits */
Stream_Write_UINT64(output, lpNumberOfFreeClusters); /* AvailableAllocationUnits */
Stream_Write_UINT32(output, lpSectorsPerCluster); /* SectorsPerAllocationUnit */
Stream_Write_UINT32(output, lpBytesPerSector); /* BytesPerSector */
break;
case FileFsDeviceInformation:
/* http://msdn.microsoft.com/en-us/library/cc232109.aspx */
Stream_Write_UINT32(output, 8); /* Length */
if (!Stream_EnsureRemainingCapacity(output, 8))
{
WLog_ERR(TAG, "Stream_EnsureRemainingCapacity failed!");
return CHANNEL_RC_NO_MEMORY;
}
Stream_Write_UINT32(output, FILE_DEVICE_DISK); /* DeviceType */
Stream_Write_UINT32(output, 0); /* Characteristics */
break;
default:
irp->IoStatus = STATUS_UNSUCCESSFUL;
Stream_Write_UINT32(output, 0); /* Length */
break;
}
return irp->Complete(irp);
}
/* http://msdn.microsoft.com/en-us/library/cc241518.aspx */
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT drive_process_irp_silent_ignore(DRIVE_DEVICE* drive, IRP* irp)
{
UINT32 FsInformationClass;
if (!drive || !irp || !irp->output || !irp->Complete)
return ERROR_INVALID_PARAMETER;
if (Stream_GetRemainingLength(irp->input) < 4)
return ERROR_INVALID_DATA;
Stream_Read_UINT32(irp->input, FsInformationClass);
Stream_Write_UINT32(irp->output, 0); /* Length */
return irp->Complete(irp);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT drive_process_irp_query_directory(DRIVE_DEVICE* drive, IRP* irp)
{
const WCHAR* path;
DRIVE_FILE* file;
BYTE InitialQuery;
UINT32 PathLength;
UINT32 FsInformationClass;
if (!drive || !irp || !irp->Complete)
return ERROR_INVALID_PARAMETER;
if (Stream_GetRemainingLength(irp->input) < 32)
return ERROR_INVALID_DATA;
Stream_Read_UINT32(irp->input, FsInformationClass);
Stream_Read_UINT8(irp->input, InitialQuery);
Stream_Read_UINT32(irp->input, PathLength);
Stream_Seek(irp->input, 23); /* Padding */
path = (WCHAR*)Stream_Pointer(irp->input);
if (!Stream_CheckAndLogRequiredLength(TAG, irp->input, PathLength))
return ERROR_INVALID_DATA;
file = drive_get_file_by_id(drive, irp->FileId);
if (file == NULL)
{
irp->IoStatus = STATUS_UNSUCCESSFUL;
Stream_Write_UINT32(irp->output, 0); /* Length */
}
else if (!drive_file_query_directory(file, FsInformationClass, InitialQuery, path, PathLength,
irp->output))
{
irp->IoStatus = drive_map_windows_err(GetLastError());
}
return irp->Complete(irp);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT drive_process_irp_directory_control(DRIVE_DEVICE* drive, IRP* irp)
{
if (!drive || !irp)
return ERROR_INVALID_PARAMETER;
switch (irp->MinorFunction)
{
case IRP_MN_QUERY_DIRECTORY:
return drive_process_irp_query_directory(drive, irp);
case IRP_MN_NOTIFY_CHANGE_DIRECTORY: /* TODO */
return irp->Discard(irp);
default:
irp->IoStatus = STATUS_NOT_SUPPORTED;
Stream_Write_UINT32(irp->output, 0); /* Length */
return irp->Complete(irp);
}
return CHANNEL_RC_OK;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT drive_process_irp_device_control(DRIVE_DEVICE* drive, IRP* irp)
{
if (!drive || !irp)
return ERROR_INVALID_PARAMETER;
Stream_Write_UINT32(irp->output, 0); /* OutputBufferLength */
return irp->Complete(irp);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT drive_process_irp(DRIVE_DEVICE* drive, IRP* irp)
{
UINT error;
if (!drive || !irp)
return ERROR_INVALID_PARAMETER;
irp->IoStatus = STATUS_SUCCESS;
switch (irp->MajorFunction)
{
case IRP_MJ_CREATE:
error = drive_process_irp_create(drive, irp);
break;
case IRP_MJ_CLOSE:
error = drive_process_irp_close(drive, irp);
break;
case IRP_MJ_READ:
error = drive_process_irp_read(drive, irp);
break;
case IRP_MJ_WRITE:
error = drive_process_irp_write(drive, irp);
break;
case IRP_MJ_QUERY_INFORMATION:
error = drive_process_irp_query_information(drive, irp);
break;
case IRP_MJ_SET_INFORMATION:
error = drive_process_irp_set_information(drive, irp);
break;
case IRP_MJ_QUERY_VOLUME_INFORMATION:
error = drive_process_irp_query_volume_information(drive, irp);
break;
case IRP_MJ_LOCK_CONTROL:
error = drive_process_irp_silent_ignore(drive, irp);
break;
case IRP_MJ_DIRECTORY_CONTROL:
error = drive_process_irp_directory_control(drive, irp);
break;
case IRP_MJ_DEVICE_CONTROL:
error = drive_process_irp_device_control(drive, irp);
break;
default:
irp->IoStatus = STATUS_NOT_SUPPORTED;
error = irp->Complete(irp);
break;
}
return error;
}
static DWORD WINAPI drive_thread_func(LPVOID arg)
{
IRP* irp;
wMessage message;
DRIVE_DEVICE* drive = (DRIVE_DEVICE*)arg;
UINT error = CHANNEL_RC_OK;
if (!drive)
{
error = ERROR_INVALID_PARAMETER;
goto fail;
}
while (1)
{
if (!MessageQueue_Wait(drive->IrpQueue))
{
WLog_ERR(TAG, "MessageQueue_Wait failed!");
error = ERROR_INTERNAL_ERROR;
break;
}
if (!MessageQueue_Peek(drive->IrpQueue, &message, TRUE))
{
WLog_ERR(TAG, "MessageQueue_Peek failed!");
error = ERROR_INTERNAL_ERROR;
break;
}
if (message.id == WMQ_QUIT)
break;
irp = (IRP*)message.wParam;
if (irp)
{
if ((error = drive_process_irp(drive, irp)))
{
WLog_ERR(TAG, "drive_process_irp failed with error %" PRIu32 "!", error);
break;
}
}
}
fail:
if (error && drive && drive->rdpcontext)
setChannelError(drive->rdpcontext, error, "drive_thread_func reported an error");
ExitThread(error);
return error;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT drive_irp_request(DEVICE* device, IRP* irp)
{
DRIVE_DEVICE* drive = (DRIVE_DEVICE*)device;
if (!drive)
return ERROR_INVALID_PARAMETER;
if (!MessageQueue_Post(drive->IrpQueue, NULL, 0, (void*)irp, NULL))
{
WLog_ERR(TAG, "MessageQueue_Post failed!");
return ERROR_INTERNAL_ERROR;
}
return CHANNEL_RC_OK;
}
static UINT drive_free_int(DRIVE_DEVICE* drive)
{
UINT error = CHANNEL_RC_OK;
if (!drive)
return ERROR_INVALID_PARAMETER;
CloseHandle(drive->thread);
ListDictionary_Free(drive->files);
MessageQueue_Free(drive->IrpQueue);
Stream_Free(drive->device.data, TRUE);
free(drive->path);
free(drive);
return error;
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT drive_free(DEVICE* device)
{
DRIVE_DEVICE* drive = (DRIVE_DEVICE*)device;
UINT error = CHANNEL_RC_OK;
if (!drive)
return ERROR_INVALID_PARAMETER;
if (MessageQueue_PostQuit(drive->IrpQueue, 0) &&
(WaitForSingleObject(drive->thread, INFINITE) == WAIT_FAILED))
{
error = GetLastError();
WLog_ERR(TAG, "WaitForSingleObject failed with error %" PRIu32 "", error);
return error;
}
return drive_free_int(drive);
}
/**
* Helper function used for freeing list dictionary value object
*/
static void drive_file_objfree(void* obj)
{
drive_file_free((DRIVE_FILE*)obj);
}
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT drive_register_drive_path(PDEVICE_SERVICE_ENTRY_POINTS pEntryPoints, const char* name,
const char* path, BOOL automount)
{
size_t i, length;
DRIVE_DEVICE* drive;
UINT error = ERROR_INTERNAL_ERROR;
if (!pEntryPoints || !name || !path)
{
WLog_ERR(TAG, "[%s] Invalid parameters: pEntryPoints=%p, name=%p, path=%p", pEntryPoints,
name, path);
return ERROR_INVALID_PARAMETER;
}
if (name[0] && path[0])
{
size_t pathLength = strnlen(path, MAX_PATH);
drive = (DRIVE_DEVICE*)calloc(1, sizeof(DRIVE_DEVICE));
if (!drive)
{
WLog_ERR(TAG, "calloc failed!");
return CHANNEL_RC_NO_MEMORY;
}
drive->device.type = RDPDR_DTYP_FILESYSTEM;
drive->device.IRPRequest = drive_irp_request;
drive->device.Free = drive_free;
drive->rdpcontext = pEntryPoints->rdpcontext;
drive->automount = automount;
length = strlen(name);
drive->device.data = Stream_New(NULL, length + 1);
if (!drive->device.data)
{
WLog_ERR(TAG, "Stream_New failed!");
error = CHANNEL_RC_NO_MEMORY;
goto out_error;
}
for (i = 0; i < length; i++)
{
/* Filter 2.2.1.3 Device Announce Header (DEVICE_ANNOUNCE) forbidden symbols */
switch (name[i])
{
case ':':
case '<':
case '>':
case '\"':
case '/':
case '\\':
case '|':
case ' ':
Stream_Write_UINT8(drive->device.data, '_');
break;
default:
Stream_Write_UINT8(drive->device.data, (BYTE)name[i]);
break;
}
}
Stream_Write_UINT8(drive->device.data, '\0');
drive->device.name = (const char*)Stream_Buffer(drive->device.data);
if (!drive->device.name)
goto out_error;
if ((pathLength > 1) && (path[pathLength - 1] == '/'))
pathLength--;
if (ConvertToUnicode(sys_code_page, 0, path, pathLength, &drive->path, 0) <= 0)
{
WLog_ERR(TAG, "ConvertToUnicode failed!");
error = CHANNEL_RC_NO_MEMORY;
goto out_error;
}
drive->files = ListDictionary_New(TRUE);
if (!drive->files)
{
WLog_ERR(TAG, "ListDictionary_New failed!");
error = CHANNEL_RC_NO_MEMORY;
goto out_error;
}
ListDictionary_ValueObject(drive->files)->fnObjectFree = drive_file_objfree;
drive->IrpQueue = MessageQueue_New(NULL);
if (!drive->IrpQueue)
{
WLog_ERR(TAG, "ListDictionary_New failed!");
error = CHANNEL_RC_NO_MEMORY;
goto out_error;
}
if ((error = pEntryPoints->RegisterDevice(pEntryPoints->devman, (DEVICE*)drive)))
{
WLog_ERR(TAG, "RegisterDevice failed with error %" PRIu32 "!", error);
goto out_error;
}
if (!(drive->thread =
CreateThread(NULL, 0, drive_thread_func, drive, CREATE_SUSPENDED, NULL)))
{
WLog_ERR(TAG, "CreateThread failed!");
goto out_error;
}
ResumeThread(drive->thread);
}
return CHANNEL_RC_OK;
out_error:
drive_free_int(drive);
return error;
}