761 lines
17 KiB
C
761 lines
17 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* File System Virtual Channel
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*
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* Copyright 2010-2011 Vic Lee
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* Copyright 2010-2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifndef _WIN32
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#define __USE_LARGEFILE64
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#define _LARGEFILE_SOURCE
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#define _LARGEFILE64_SOURCE
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#include <sys/time.h>
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#endif
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <winpr/crt.h>
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#include <winpr/synch.h>
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#include <winpr/thread.h>
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#include <winpr/stream.h>
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#include <winpr/interlocked.h>
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#include <winpr/collections.h>
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#include <freerdp/channels/rdpdr.h>
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#include "drive_file.h"
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typedef struct _DRIVE_DEVICE DRIVE_DEVICE;
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struct _DRIVE_DEVICE
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{
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DEVICE device;
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char* path;
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wListDictionary* files;
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HANDLE thread;
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wMessageQueue* IrpQueue;
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DEVMAN* devman;
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};
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static UINT32 drive_map_posix_err(int fs_errno)
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{
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UINT32 rc;
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/* try to return NTSTATUS version of error code */
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switch (fs_errno)
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{
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case EPERM:
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case EACCES:
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rc = STATUS_ACCESS_DENIED;
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break;
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case ENOENT:
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rc = STATUS_NO_SUCH_FILE;
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break;
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case EBUSY:
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rc = STATUS_DEVICE_BUSY;
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break;
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case EEXIST:
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rc = STATUS_OBJECT_NAME_COLLISION;
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break;
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case EISDIR:
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rc = STATUS_FILE_IS_A_DIRECTORY;
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break;
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default:
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rc = STATUS_UNSUCCESSFUL;
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break;
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}
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return rc;
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}
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static DRIVE_FILE* drive_get_file_by_id(DRIVE_DEVICE* drive, UINT32 id)
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{
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DRIVE_FILE* file = NULL;
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void* key = (void*) (size_t) id;
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file = (DRIVE_FILE*) ListDictionary_GetItemValue(drive->files, key);
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return file;
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}
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static void drive_process_irp_create(DRIVE_DEVICE* drive, IRP* irp)
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{
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int status;
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void* key;
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UINT32 FileId;
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DRIVE_FILE* file;
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BYTE Information;
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UINT32 DesiredAccess;
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UINT32 CreateDisposition;
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UINT32 CreateOptions;
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UINT32 PathLength;
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char* path = NULL;
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Stream_Read_UINT32(irp->input, DesiredAccess);
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Stream_Seek(irp->input, 16); /* AllocationSize(8), FileAttributes(4), SharedAccess(4) */
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Stream_Read_UINT32(irp->input, CreateDisposition);
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Stream_Read_UINT32(irp->input, CreateOptions);
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Stream_Read_UINT32(irp->input, PathLength);
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status = ConvertFromUnicode(CP_UTF8, 0, (WCHAR*) Stream_Pointer(irp->input),
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PathLength / 2, &path, 0, NULL, NULL);
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if (status < 1)
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path = (char*) calloc(1, 1);
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FileId = irp->devman->id_sequence++;
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file = drive_file_new(drive->path, path, FileId,
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DesiredAccess, CreateDisposition, CreateOptions);
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if (!file)
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{
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irp->IoStatus = STATUS_UNSUCCESSFUL;
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FileId = 0;
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Information = 0;
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}
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else if (file->err)
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{
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FileId = 0;
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Information = 0;
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/* map errno to windows result */
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irp->IoStatus = drive_map_posix_err(file->err);
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drive_file_free(file);
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}
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else
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{
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key = (void*) (size_t) file->id;
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ListDictionary_Add(drive->files, key, file);
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switch (CreateDisposition)
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{
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case FILE_SUPERSEDE:
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case FILE_OPEN:
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case FILE_CREATE:
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case FILE_OVERWRITE:
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Information = FILE_SUPERSEDED;
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break;
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case FILE_OPEN_IF:
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Information = FILE_OPENED;
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break;
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case FILE_OVERWRITE_IF:
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Information = FILE_OVERWRITTEN;
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break;
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default:
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Information = 0;
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break;
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}
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}
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Stream_Write_UINT32(irp->output, FileId);
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Stream_Write_UINT8(irp->output, Information);
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free(path);
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irp->Complete(irp);
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}
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static void drive_process_irp_close(DRIVE_DEVICE* drive, IRP* irp)
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{
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void* key;
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DRIVE_FILE* file;
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file = drive_get_file_by_id(drive, irp->FileId);
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key = (void*) (size_t) irp->FileId;
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if (!file)
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{
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irp->IoStatus = STATUS_UNSUCCESSFUL;
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}
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else
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{
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ListDictionary_Remove(drive->files, key);
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drive_file_free(file);
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}
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Stream_Zero(irp->output, 5); /* Padding(5) */
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irp->Complete(irp);
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}
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static void drive_process_irp_read(DRIVE_DEVICE* drive, IRP* irp)
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{
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DRIVE_FILE* file;
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UINT32 Length;
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UINT64 Offset;
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BYTE* buffer = NULL;
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Stream_Read_UINT32(irp->input, Length);
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Stream_Read_UINT64(irp->input, Offset);
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file = drive_get_file_by_id(drive, irp->FileId);
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if (!file)
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{
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irp->IoStatus = STATUS_UNSUCCESSFUL;
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Length = 0;
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}
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else if (!drive_file_seek(file, Offset))
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{
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irp->IoStatus = STATUS_UNSUCCESSFUL;
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Length = 0;
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}
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else
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{
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buffer = (BYTE*) malloc(Length);
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if (!drive_file_read(file, buffer, &Length))
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{
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irp->IoStatus = STATUS_UNSUCCESSFUL;
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free(buffer);
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buffer = NULL;
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Length = 0;
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}
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else
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{
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}
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}
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Stream_Write_UINT32(irp->output, Length);
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if (Length > 0)
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{
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Stream_EnsureRemainingCapacity(irp->output, (int) Length);
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Stream_Write(irp->output, buffer, Length);
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}
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free(buffer);
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irp->Complete(irp);
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}
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static void drive_process_irp_write(DRIVE_DEVICE* drive, IRP* irp)
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{
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DRIVE_FILE* file;
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UINT32 Length;
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UINT64 Offset;
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Stream_Read_UINT32(irp->input, Length);
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Stream_Read_UINT64(irp->input, Offset);
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Stream_Seek(irp->input, 20); /* Padding */
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file = drive_get_file_by_id(drive, irp->FileId);
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if (!file)
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{
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irp->IoStatus = STATUS_UNSUCCESSFUL;
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Length = 0;
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}
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else if (!drive_file_seek(file, Offset))
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{
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irp->IoStatus = STATUS_UNSUCCESSFUL;
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Length = 0;
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}
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else if (!drive_file_write(file, Stream_Pointer(irp->input), Length))
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{
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irp->IoStatus = STATUS_UNSUCCESSFUL;
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Length = 0;
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}
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else
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{
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}
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Stream_Write_UINT32(irp->output, Length);
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Stream_Write_UINT8(irp->output, 0); /* Padding */
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irp->Complete(irp);
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}
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static void drive_process_irp_query_information(DRIVE_DEVICE* drive, IRP* irp)
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{
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DRIVE_FILE* file;
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UINT32 FsInformationClass;
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Stream_Read_UINT32(irp->input, FsInformationClass);
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file = drive_get_file_by_id(drive, irp->FileId);
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if (!file)
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{
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irp->IoStatus = STATUS_UNSUCCESSFUL;
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}
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else if (!drive_file_query_information(file, FsInformationClass, irp->output))
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{
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irp->IoStatus = STATUS_UNSUCCESSFUL;
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}
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else
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{
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}
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irp->Complete(irp);
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}
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static void drive_process_irp_set_information(DRIVE_DEVICE* drive, IRP* irp)
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{
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DRIVE_FILE* file;
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UINT32 FsInformationClass;
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UINT32 Length;
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Stream_Read_UINT32(irp->input, FsInformationClass);
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Stream_Read_UINT32(irp->input, Length);
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Stream_Seek(irp->input, 24); /* Padding */
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file = drive_get_file_by_id(drive, irp->FileId);
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if (!file)
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{
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irp->IoStatus = STATUS_UNSUCCESSFUL;
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}
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else if (!drive_file_set_information(file, FsInformationClass, Length, irp->input))
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{
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irp->IoStatus = STATUS_UNSUCCESSFUL;
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}
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else
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{
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}
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if (file && file->is_dir && !dir_empty(file->fullpath))
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irp->IoStatus = STATUS_DIRECTORY_NOT_EMPTY;
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Stream_Write_UINT32(irp->output, Length);
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irp->Complete(irp);
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}
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static void drive_process_irp_query_volume_information(DRIVE_DEVICE* drive, IRP* irp)
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{
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UINT32 FsInformationClass;
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wStream* output = irp->output;
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struct STATVFS svfst;
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struct STAT st;
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char* volumeLabel = {"FREERDP"};
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char* diskType = {"FAT32"};
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WCHAR* outStr = NULL;
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int length;
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Stream_Read_UINT32(irp->input, FsInformationClass);
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STATVFS(drive->path, &svfst);
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STAT(drive->path, &st);
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switch (FsInformationClass)
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{
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case FileFsVolumeInformation:
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/* http://msdn.microsoft.com/en-us/library/cc232108.aspx */
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length = ConvertToUnicode(sys_code_page, 0, volumeLabel, -1, &outStr, 0) * 2;
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Stream_Write_UINT32(output, 17 + length); /* Length */
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Stream_EnsureRemainingCapacity(output, 17 + length);
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Stream_Write_UINT64(output, FILE_TIME_SYSTEM_TO_RDP(st.st_ctime)); /* VolumeCreationTime */
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#ifdef ANDROID
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Stream_Write_UINT32(output, svfst.f_fsid.__val[0]); /* VolumeSerialNumber */
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#else
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Stream_Write_UINT32(output, svfst.f_fsid); /* VolumeSerialNumber */
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#endif
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Stream_Write_UINT32(output, length); /* VolumeLabelLength */
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Stream_Write_UINT8(output, 0); /* SupportsObjects */
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/* Reserved(1), MUST NOT be added! */
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Stream_Write(output, outStr, length); /* VolumeLabel (Unicode) */
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free(outStr);
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break;
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case FileFsSizeInformation:
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/* http://msdn.microsoft.com/en-us/library/cc232107.aspx */
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Stream_Write_UINT32(output, 24); /* Length */
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Stream_EnsureRemainingCapacity(output, 24);
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Stream_Write_UINT64(output, svfst.f_blocks); /* TotalAllocationUnits */
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Stream_Write_UINT64(output, svfst.f_bavail); /* AvailableAllocationUnits */
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Stream_Write_UINT32(output, 1); /* SectorsPerAllocationUnit */
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Stream_Write_UINT32(output, svfst.f_bsize); /* BytesPerSector */
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break;
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case FileFsAttributeInformation:
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/* http://msdn.microsoft.com/en-us/library/cc232101.aspx */
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length = ConvertToUnicode(sys_code_page, 0, diskType, -1, &outStr, 0) * 2;
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Stream_Write_UINT32(output, 12 + length); /* Length */
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Stream_EnsureRemainingCapacity(output, 12 + length);
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Stream_Write_UINT32(output,
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FILE_CASE_SENSITIVE_SEARCH |
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FILE_CASE_PRESERVED_NAMES |
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FILE_UNICODE_ON_DISK); /* FileSystemAttributes */
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#ifdef ANDROID
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Stream_Write_UINT32(output, 255); /* MaximumComponentNameLength */
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#else
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Stream_Write_UINT32(output, svfst.f_namemax/*510*/); /* MaximumComponentNameLength */
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#endif
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Stream_Write_UINT32(output, length); /* FileSystemNameLength */
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Stream_Write(output, outStr, length); /* FileSystemName (Unicode) */
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free(outStr);
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break;
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case FileFsFullSizeInformation:
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/* http://msdn.microsoft.com/en-us/library/cc232104.aspx */
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Stream_Write_UINT32(output, 32); /* Length */
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Stream_EnsureRemainingCapacity(output, 32);
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Stream_Write_UINT64(output, svfst.f_blocks); /* TotalAllocationUnits */
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Stream_Write_UINT64(output, svfst.f_bavail); /* CallerAvailableAllocationUnits */
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Stream_Write_UINT64(output, svfst.f_bfree); /* AvailableAllocationUnits */
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Stream_Write_UINT32(output, 1); /* SectorsPerAllocationUnit */
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Stream_Write_UINT32(output, svfst.f_bsize); /* BytesPerSector */
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break;
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case FileFsDeviceInformation:
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/* http://msdn.microsoft.com/en-us/library/cc232109.aspx */
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Stream_Write_UINT32(output, 8); /* Length */
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Stream_EnsureRemainingCapacity(output, 8);
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Stream_Write_UINT32(output, FILE_DEVICE_DISK); /* DeviceType */
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Stream_Write_UINT32(output, 0); /* Characteristics */
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break;
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default:
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irp->IoStatus = STATUS_UNSUCCESSFUL;
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Stream_Write_UINT32(output, 0); /* Length */
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break;
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}
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irp->Complete(irp);
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}
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/* http://msdn.microsoft.com/en-us/library/cc241518.aspx */
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static void drive_process_irp_silent_ignore(DRIVE_DEVICE* drive, IRP* irp)
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{
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UINT32 FsInformationClass;
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wStream* output = irp->output;
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Stream_Read_UINT32(irp->input, FsInformationClass);
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Stream_Write_UINT32(output, 0); /* Length */
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irp->Complete(irp);
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}
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static void drive_process_irp_query_directory(DRIVE_DEVICE* drive, IRP* irp)
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{
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char* path = NULL;
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int status;
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DRIVE_FILE* file;
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BYTE InitialQuery;
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UINT32 PathLength;
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UINT32 FsInformationClass;
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Stream_Read_UINT32(irp->input, FsInformationClass);
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Stream_Read_UINT8(irp->input, InitialQuery);
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Stream_Read_UINT32(irp->input, PathLength);
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Stream_Seek(irp->input, 23); /* Padding */
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status = ConvertFromUnicode(CP_UTF8, 0, (WCHAR*) Stream_Pointer(irp->input),
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PathLength / 2, &path, 0, NULL, NULL);
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if (status < 1)
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path = (char*) calloc(1, 1);
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file = drive_get_file_by_id(drive, irp->FileId);
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if (file == NULL)
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{
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irp->IoStatus = STATUS_UNSUCCESSFUL;
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Stream_Write_UINT32(irp->output, 0); /* Length */
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}
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else if (!drive_file_query_directory(file, FsInformationClass, InitialQuery, path, irp->output))
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{
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irp->IoStatus = STATUS_NO_MORE_FILES;
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}
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free(path);
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irp->Complete(irp);
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}
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static void drive_process_irp_directory_control(DRIVE_DEVICE* drive, IRP* irp)
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{
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switch (irp->MinorFunction)
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{
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case IRP_MN_QUERY_DIRECTORY:
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drive_process_irp_query_directory(drive, irp);
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break;
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case IRP_MN_NOTIFY_CHANGE_DIRECTORY: /* TODO */
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irp->Discard(irp);
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break;
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default:
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irp->IoStatus = STATUS_NOT_SUPPORTED;
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Stream_Write_UINT32(irp->output, 0); /* Length */
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irp->Complete(irp);
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break;
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}
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}
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static void drive_process_irp_device_control(DRIVE_DEVICE* drive, IRP* irp)
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{
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Stream_Write_UINT32(irp->output, 0); /* OutputBufferLength */
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irp->Complete(irp);
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}
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static void drive_process_irp(DRIVE_DEVICE* drive, IRP* irp)
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{
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irp->IoStatus = STATUS_SUCCESS;
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switch (irp->MajorFunction)
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{
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case IRP_MJ_CREATE:
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drive_process_irp_create(drive, irp);
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break;
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case IRP_MJ_CLOSE:
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drive_process_irp_close(drive, irp);
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break;
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case IRP_MJ_READ:
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drive_process_irp_read(drive, irp);
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break;
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case IRP_MJ_WRITE:
|
|
drive_process_irp_write(drive, irp);
|
|
break;
|
|
|
|
case IRP_MJ_QUERY_INFORMATION:
|
|
drive_process_irp_query_information(drive, irp);
|
|
break;
|
|
|
|
case IRP_MJ_SET_INFORMATION:
|
|
drive_process_irp_set_information(drive, irp);
|
|
break;
|
|
|
|
case IRP_MJ_QUERY_VOLUME_INFORMATION:
|
|
drive_process_irp_query_volume_information(drive, irp);
|
|
break;
|
|
|
|
case IRP_MJ_LOCK_CONTROL:
|
|
drive_process_irp_silent_ignore(drive, irp);
|
|
break;
|
|
|
|
case IRP_MJ_DIRECTORY_CONTROL:
|
|
drive_process_irp_directory_control(drive, irp);
|
|
break;
|
|
|
|
case IRP_MJ_DEVICE_CONTROL:
|
|
drive_process_irp_device_control(drive, irp);
|
|
break;
|
|
|
|
default:
|
|
irp->IoStatus = STATUS_NOT_SUPPORTED;
|
|
irp->Complete(irp);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void* drive_thread_func(void* arg)
|
|
{
|
|
IRP* irp;
|
|
wMessage message;
|
|
DRIVE_DEVICE* drive = (DRIVE_DEVICE*) arg;
|
|
|
|
while (1)
|
|
{
|
|
if (!MessageQueue_Wait(drive->IrpQueue))
|
|
break;
|
|
|
|
if (!MessageQueue_Peek(drive->IrpQueue, &message, TRUE))
|
|
break;
|
|
|
|
if (message.id == WMQ_QUIT)
|
|
break;
|
|
|
|
irp = (IRP*) message.wParam;
|
|
|
|
if (irp)
|
|
drive_process_irp(drive, irp);
|
|
}
|
|
|
|
ExitThread(0);
|
|
return NULL;
|
|
}
|
|
|
|
static void drive_irp_request(DEVICE* device, IRP* irp)
|
|
{
|
|
DRIVE_DEVICE* drive = (DRIVE_DEVICE*) device;
|
|
MessageQueue_Post(drive->IrpQueue, NULL, 0, (void*) irp, NULL);
|
|
}
|
|
|
|
static void drive_free(DEVICE* device)
|
|
{
|
|
DRIVE_DEVICE* drive = (DRIVE_DEVICE*) device;
|
|
|
|
MessageQueue_PostQuit(drive->IrpQueue, 0);
|
|
WaitForSingleObject(drive->thread, INFINITE);
|
|
|
|
CloseHandle(drive->thread);
|
|
|
|
ListDictionary_Free(drive->files);
|
|
MessageQueue_Free(drive->IrpQueue);
|
|
|
|
Stream_Free(drive->device.data, TRUE);
|
|
|
|
free(drive);
|
|
}
|
|
|
|
void drive_register_drive_path(PDEVICE_SERVICE_ENTRY_POINTS pEntryPoints, char* name, char* path)
|
|
{
|
|
int i, length;
|
|
DRIVE_DEVICE* drive;
|
|
|
|
#ifdef WIN32
|
|
/*
|
|
* We cannot enter paths like c:\ because : is an arg separator
|
|
* thus, paths are entered as c+\ and the + is substituted here
|
|
*/
|
|
if (path[1] == '+')
|
|
{
|
|
if ((path[0]>='a' && path[0]<='z') || (path[0]>='A' && path[0]<='Z'))
|
|
{
|
|
path[1] = ':';
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (name[0] && path[0])
|
|
{
|
|
drive = (DRIVE_DEVICE*) malloc(sizeof(DRIVE_DEVICE));
|
|
ZeroMemory(drive, sizeof(DRIVE_DEVICE));
|
|
|
|
drive->device.type = RDPDR_DTYP_FILESYSTEM;
|
|
drive->device.name = name;
|
|
drive->device.IRPRequest = drive_irp_request;
|
|
drive->device.Free = drive_free;
|
|
|
|
length = (int) strlen(name);
|
|
drive->device.data = Stream_New(NULL, length + 1);
|
|
|
|
for (i = 0; i <= length; i++)
|
|
Stream_Write_UINT8(drive->device.data, name[i] < 0 ? '_' : name[i]);
|
|
|
|
drive->path = path;
|
|
|
|
drive->files = ListDictionary_New(TRUE);
|
|
ListDictionary_ValueObject(drive->files)->fnObjectFree = (OBJECT_FREE_FN) drive_file_free;
|
|
|
|
drive->IrpQueue = MessageQueue_New(NULL);
|
|
drive->thread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE) drive_thread_func, drive, CREATE_SUSPENDED, NULL);
|
|
|
|
pEntryPoints->RegisterDevice(pEntryPoints->devman, (DEVICE*) drive);
|
|
|
|
ResumeThread(drive->thread);
|
|
}
|
|
}
|
|
|
|
#ifdef STATIC_CHANNELS
|
|
#define DeviceServiceEntry drive_DeviceServiceEntry
|
|
#endif
|
|
|
|
UINT sys_code_page = 0;
|
|
|
|
int DeviceServiceEntry(PDEVICE_SERVICE_ENTRY_POINTS pEntryPoints)
|
|
{
|
|
RDPDR_DRIVE* drive;
|
|
#ifdef WIN32
|
|
char* dev;
|
|
int len;
|
|
char devlist[512], buf[512];
|
|
#endif
|
|
|
|
drive = (RDPDR_DRIVE*) pEntryPoints->device;
|
|
|
|
#ifndef WIN32
|
|
|
|
sys_code_page = CP_UTF8;
|
|
if (strcmp(drive->Path, "*") == 0)
|
|
{
|
|
/* all drives */
|
|
|
|
free(drive->Path);
|
|
drive->Path = _strdup("/");
|
|
}
|
|
else if (strcmp(drive->Path, "%") == 0)
|
|
{
|
|
char* home_env = NULL;
|
|
|
|
/* home directory */
|
|
|
|
home_env = getenv("HOME");
|
|
free(drive->Path);
|
|
|
|
if (home_env)
|
|
drive->Path = _strdup(home_env);
|
|
else
|
|
drive->Path = _strdup("/");
|
|
}
|
|
|
|
drive_register_drive_path(pEntryPoints, drive->Name, drive->Path);
|
|
|
|
#else
|
|
sys_code_page = GetACP();
|
|
/* Special case: path[0] == '*' -> export all drives */
|
|
/* Special case: path[0] == '%' -> user home dir */
|
|
if (strcmp(drive->Path, "%") == 0)
|
|
{
|
|
_snprintf(buf, sizeof(buf), "%s\\", getenv("USERPROFILE"));
|
|
drive_register_drive_path(pEntryPoints, drive->Name, _strdup(buf));
|
|
}
|
|
else if (strcmp(drive->Path, "*") == 0)
|
|
{
|
|
int i;
|
|
|
|
/* Enumerate all devices: */
|
|
GetLogicalDriveStringsA(sizeof(devlist) - 1, devlist);
|
|
|
|
for (dev = devlist, i = 0; *dev; dev += 4, i++)
|
|
{
|
|
if (*dev > 'B')
|
|
{
|
|
/* Suppress disk drives A and B to avoid pesty messages */
|
|
len = _snprintf(buf, sizeof(buf) - 4, "%s", drive->Name);
|
|
buf[len] = '_';
|
|
buf[len + 1] = dev[0];
|
|
buf[len + 2] = 0;
|
|
buf[len + 3] = 0;
|
|
drive_register_drive_path(pEntryPoints, _strdup(buf), _strdup(dev));
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
drive_register_drive_path(pEntryPoints, drive->Name, drive->Path);
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|