fs.expose.dokan: got basic file listing and reading working

fs/expose/dokan/dokan_ctypes.py

+
+from ctypes import *
+
+try:
+    DokanMain = windll.Dokan.DokanMain
+except AttributeError:
+    raise ImportError("Dokan DLL not found")
+
+
+from ctypes.wintypes import *
+ULONG64 = c_ulonglong
+ULONGLONG = c_ulonglong
+PULONGLONG = POINTER(ULONGLONG)
+UCHAR = c_ubyte
+LPDWORD = POINTER(DWORD)
+LONGLONG = c_longlong
+
+MAX_PATH = 260
+
+class FILETIME(Structure):
+    _fields_ = [
+        ("dwLowDateTime", DWORD),
+        ("dwHighDateTime", DWORD),
+    ]
+
+class WIN32_FIND_DATAW(Structure):
+    _fields_ = [
+        ("dwFileAttributes", DWORD),
+        ("ftCreationTime", FILETIME),
+        ("ftLastAccessTime", FILETIME),
+        ("ftLastWriteTime", FILETIME),
+        ("nFileSizeHigh", DWORD),
+        ("nFileSizeLow", DWORD),
+        ("dwReserved0", DWORD),
+        ("dwReserved1", DWORD),
+        ("cFileName", WCHAR * MAX_PATH),
+        ("cAlternateFileName", WCHAR * 14),
+    ]
+
+class BY_HANDLE_FILE_INFORMATION(Structure):
+    _fields_ = [
+        ('dwFileAttributes', DWORD),
+        ('ftCreationTime', FILETIME),
+        ('ftLastAccessTime', FILETIME),
+        ('ftLastWriteTime', FILETIME),
+        ('dwVolumeSerialNumber', DWORD),
+        ('nFileSizeHigh', DWORD),
+        ('nFileSizeLow', DWORD),
+        ('nNumberOfLinks', DWORD),
+        ('nFileIndexHigh', DWORD),
+        ('nFileIndexLow', DWORD),
+    ]
+
+class DOKAN_OPTIONS(Structure):
+    _fields_ = [
+	("DriveLetter", WCHAR),
+	("ThreadCount", USHORT),
+	("Options", ULONG),
+	("GlobalContext", ULONG64),
+    ]
+
+
+class DOKAN_FILE_INFO(Structure):
+    _fields_ = [
+        ("Context", ULONG64),
+        ("DokanContext", ULONG64),
+        ("DokanOptions", POINTER(DOKAN_OPTIONS)),
+        ("ProcessId", ULONG),
+        ("IsDirectory", UCHAR),
+        ("DeleteOnClose", UCHAR),
+        ("PagingIO", UCHAR),
+        ("SyncronousIo", UCHAR),
+        ("Nocache", UCHAR),
+        ("WriteToEndOfFile", UCHAR),
+]
+
+
+PDOKAN_FILE_INFO = POINTER(DOKAN_FILE_INFO)
+PFillFindData = WINFUNCTYPE(c_int,POINTER(WIN32_FIND_DATAW),PDOKAN_FILE_INFO)
+
+class DOKAN_OPERATIONS(Structure):
+    _fields_ = [
+        ("CreateFile", CFUNCTYPE(c_int,
+                LPCWSTR,      # FileName
+                DWORD,        # DesiredAccess
+                DWORD,        # ShareMode
+                DWORD,        # CreationDisposition
+                DWORD,        # FlagsAndAttributes
+                PDOKAN_FILE_INFO)),
+        ("OpenDirectory", CFUNCTYPE(c_int,
+		LPCWSTR,      # FileName
+		PDOKAN_FILE_INFO)),
+        ("CreateDirectory", CFUNCTYPE(c_int,
+		LPCWSTR,      # FileName
+		PDOKAN_FILE_INFO)),
+        ("Cleanup", CFUNCTYPE(c_int,
+		LPCWSTR,      # FileName
+		PDOKAN_FILE_INFO)),
+        ("CloseFile", CFUNCTYPE(c_int,
+		LPCWSTR,      # FileName
+		PDOKAN_FILE_INFO)),
+        ("ReadFile", CFUNCTYPE(c_int,
+		LPCWSTR,  # FileName
+		POINTER(c_char),   # Buffer
+		DWORD,    # NumberOfBytesToRead
+		LPDWORD,  # NumberOfBytesRead
+		LONGLONG, # Offset
+		PDOKAN_FILE_INFO)),
+        ("WriteFile", CFUNCTYPE(c_int,
+		LPCWSTR,  # FileName
+		c_char_p,  # Buffer
+		DWORD,    # NumberOfBytesToWrite
+		LPDWORD,  # NumberOfBytesWritten
+		LONGLONG, # Offset
+		PDOKAN_FILE_INFO)),
+        ("FlushFileBuffers", CFUNCTYPE(c_int,
+		LPCWSTR,  # FileName
+		PDOKAN_FILE_INFO)),
+        ("GetFileInformation", CFUNCTYPE(c_int,
+		LPCWSTR,  # FileName
+		POINTER(BY_HANDLE_FILE_INFORMATION), # Buffer
+		PDOKAN_FILE_INFO)),
+        ("FindFiles", CFUNCTYPE(c_int,
+		LPCWSTR,  # PathName
+		PFillFindData, # call this function with PWIN32_FIND_DATAW
+		PDOKAN_FILE_INFO)),
+        ("FindFilesWithPattern", CFUNCTYPE(c_int,
+		LPCWSTR,  # PathName
+		LPCWSTR,  # SearchPattern
+		PFillFindData,	#call this function with PWIN32_FIND_DATAW
+		PDOKAN_FILE_INFO)),
+        ("SetFileAttributes", CFUNCTYPE(c_int,
+		LPCWSTR, # FileName
+		DWORD,   # FileAttributes
+		PDOKAN_FILE_INFO)),
+        ("SetFileTime", CFUNCTYPE(c_int,
+		LPCWSTR, # FileName
+		POINTER(FILETIME), # CreationTime
+		POINTER(FILETIME), # LastAccessTime
+		POINTER(FILETIME), # LastWriteTime
+		PDOKAN_FILE_INFO)),
+        ("DeleteFile", CFUNCTYPE(c_int,
+		LPCWSTR, # FileName
+		PDOKAN_FILE_INFO)),
+        ("DeleteDirectory", CFUNCTYPE(c_int,
+		LPCWSTR, # FileName
+		PDOKAN_FILE_INFO)),
+        ("MoveFile", CFUNCTYPE(c_int,
+		LPCWSTR, # ExistingFileName
+		LPCWSTR, # NewFileName
+		BOOL,	 # ReplaceExisiting
+		PDOKAN_FILE_INFO)),
+        ("SetEndOfFile", CFUNCTYPE(c_int,
+		LPCWSTR,  # FileName
+		LONGLONG, # Length
+		PDOKAN_FILE_INFO)),
+        ("SetAllocationSize", CFUNCTYPE(c_int,
+		LPCWSTR,  # FileName
+		LONGLONG, # Length
+		PDOKAN_FILE_INFO)),
+        ("LockFile", CFUNCTYPE(c_int,
+		LPCWSTR,  # FileName
+		LONGLONG, # ByteOffset
+		LONGLONG, # Length
+		PDOKAN_FILE_INFO)),
+        ("UnlockFile", CFUNCTYPE(c_int,
+		LPCWSTR,  # FileName
+		LONGLONG, # ByteOffset
+		LONGLONG, # Length
+		PDOKAN_FILE_INFO)),
+        ("GetDiskFreeSpaceEx", CFUNCTYPE(c_int,
+		PULONGLONG, # FreeBytesAvailable
+		PULONGLONG, # TotalNumberOfBytes
+		PULONGLONG, # TotalNumberOfFreeBytes
+		PDOKAN_FILE_INFO)),
+        ("GetVolumeInformation", CFUNCTYPE(c_int,
+		LPWSTR,  # VolumeNameBuffer
+		DWORD,	 # VolumeNameSize in num of chars
+		LPDWORD, # VolumeSerialNumber
+		LPDWORD, # MaximumComponentLength in num of chars
+		LPDWORD, # FileSystemFlags
+		LPWSTR,	 # FileSystemNameBuffer
+		DWORD,	 # FileSystemNameSize in num of chars
+		PDOKAN_FILE_INFO)),
+        ("Unmount", CFUNCTYPE(c_int,
+		PDOKAN_FILE_INFO)),
+    ]
+
+
+
+class DokanOperations(object):
+    """Object interface to defining a DOKAN_OPERATIONS structure."""
+
+    def __init__(self):
+        self.buffer = DOKAN_OPERATIONS()
+        for (nm,typ) in DOKAN_OPERATIONS._fields_:
+            try:
+                setattr(self.buffer,nm,typ(getattr(self,nm)))
+            except AttributeError:
+                setattr(self.buffer,nm,typ(self._noop))
+
+    def _noop(self,*args):
+        return -1
+
+
+
+DokanMain.restype = c_int
+DokanMain.argtypes = (
+    POINTER(DOKAN_OPTIONS),
+    POINTER(DOKAN_OPERATIONS),
+)
+
+
+
+DokanUnmount = windll.Dokan.DokanUnmount
+DokanUnmount.restype = BOOL
+DokanUnmount.argtypes = (
+    WCHAR,
+)
+
+DokanIsNameInExpression = windll.Dokan.DokanIsNameInExpression
+DokanIsNameInExpression.restype = BOOL
+DokanUnmount.argtypes = (
+    LPCWSTR,  # pattern
+    LPCWSTR,  # name
+    BOOL,     # ignore case
+)
+
+
+DokanVersion = windll.Dokan.DokanVersion
+DokanVersion.restype = ULONG
+DokanVersion.argtypes = (
+)
+
+DokanDriverVersion = windll.Dokan.DokanDriverVersion
+DokanDriverVersion.restype = ULONG
+DokanDriverVersion.argtypes = (
+)
+
+DokanResetTimeout = windll.Dokan.DokanResetTimeout
+DokanResetTimeout.restype = BOOL
+DokanResetTimeout.argtypes = (
+)
+
+