Vista Tutorial - deleting files that meet specific criteria

Hi all,

My intent is use PS to search through my digital music library and remove
all DRM files for which I no longer have rights.

I used to subscribe to the URGE music store, and have a bunch of files
tagged with "protected content" under the License Property Set. This
"license" tab can be viewed as a tab along side the general, the security,
and the summary tabs, if one clicks on the file's property.

For the life of me, I cannot find anything that describes how to show/list
the presence of the "license" tab. TypeName: System.IO.FileInfo ... I can
retreive info about the file with the memberType Property ... Nothing out of
the ordinary is listed for memberType when I enter the following command on a
file in question:

I figured it would the easiest to do it in PS, but it didn't turn out to be
such a good assumption.

Your assistance is greatly appreciated.

On Feb 25, 1:00 pm, Boomer <Boo...@xxxxxx> wrote:Boomer,

I looked around at what was available through Windows Media player,
and the best I could come up with is this little script that tells you
if a file has DRM protection or not:

# Get-Protected.ps1
param( [string] $wmaFile )

if ( Test-Path $wmaFile )
{
$wmplayer = New-Object -ComObject "WMPlayer.OCX"

$media = $wmplayer.newMedia( $wmaFile )

[bool]::Parse( $media.getItemInfo( "Is_Protected" ) )
}
# Get-Protected.ps1

If you want much more information that that, it looks like you might
need to get a license from Microsoft for a DRM SDK of some kind:
http://msdn2.microsoft.com/en-us/win.../bb190309.aspx

These licenses are necessary if you are creating an application to
manage licenses or something like that, so it seems like they
shouldn't be necessary if all you want to do is query the
information. If you do find anything, please post back here; I would
certainly be interested.

Jeff

Boomer,

I found an SDK that might help you with what you want to do:

Windows Media Format 11 SDK
http://msdn2.microsoft.com/en-us/lib...10(VS.85).aspx

This SDK lets you query all kinds of DRM information for a file, and
the SDK comes with a whole bunch of useful sample code. It doesn't
look like any of it is easily accessible from .NET (no TLBs or COM
servers), so you may have to write a small Win32 console application
to query what you want, and then call it from your PowerShell script.

I hope this helps.

Jeff

Jeff wrote:

"Boomer" <Boomer@xxxxxx> wrote in message
news:A254A497-F985-417D-954D-856E5B918048@xxxxxxIf you look at the details on these DRM protected files in Windows Explorer
do you see any metatags that identify the file as DRM protected? If so you
can use the presence and/or value of those flags to conditionally delete
those files.

--
Keith

On Feb 25, 5:46 pm, Jeff <jeff.hill...@xxxxxx> wrote:Boomer,

In case this is the route you decide to go, here is a little console
application that checks the "Playback Allowed" property on a DRM
protected file:

#include <atlbase.h>
#include <TCHAR.H>
#include "wmsdk.h"

int _tmain( int argc, wchar_t *argv[] )
{
if ( SUCCEEDED( CoInitialize( NULL ) ) )
{
int nCount = MultiByteToWideChar(
CP_ACP, 0, (LPCSTR)argv[ 1 ], -1, NULL, 0 );

wchar_t *pwszFileName = new wchar_t[ nCount ];

MultiByteToWideChar(
CP_ACP, 0, (LPCSTR)argv[ 1 ], -1, pwszFileName, nCount );

// check to see if the file is protected with DRM
BOOL bProtected;

HRESULT hr = WMIsContentProtected( pwszFileName,
&bProtected );

if ( SUCCEEDED( hr ) )
{
// if the file isn't protected with DRM, we don't need to
continue
if ( !bProtected )
{
wprintf( L"Playback Allowed: True\n" );
}
else
{
// create a meta data editor
CComPtr<IWMMetadataEditor> spEditor;
hr = WMCreateEditor( &spEditor );

// open the media file
if ( SUCCEEDED( hr ) )
{
hr = spEditor->Open( pwszFileName );
}

// QI for the DRM editor
CComQIPtr<IWMDRMEditor> spDRMEditor( spEditor );
WMT_ATTR_DATATYPE wmtAttribute;
BYTE playbackAllowed[ 4 ];
WORD wLength;

if ( SUCCEEDED( hr ) && spDRMEditor )
{
// get the 'playback allowed' property value
hr = spDRMEditor->GetDRMProperty(
g_wszWMDRM_ActionAllowed_Playback,
&wmtAttribute, playbackAllowed,
&wLength );

if ( SUCCEEDED( hr ) )
{
wprintf( L"Playback Allowed: %s\n",
( (BOOL)*playbackAllowed ? L"True" :
L"False" ) );
}
}
}
}

CoUninitialize();
}

return 0;
}

This should be enough to determine if you want to keep a file or not.

Good luck.

Jeff

On Feb 25, 5:46 pm, Jeff <jeff.hill...@xxxxxx> wrote:Boomer,

In case this is the route you decide to take, here is a small console
application that determines if playback is allowed for a DRM-protected
file:

#include <atlbase.h>
#include <TCHAR.H>
#include "wmsdk.h"

int _tmain( int argc, wchar_t *argv[] )
{
if ( SUCCEEDED( CoInitialize( NULL ) ) )
{
int nCount = MultiByteToWideChar(
CP_ACP, 0, (LPCSTR)argv[ 1 ], -1, NULL, 0 );

wchar_t *pwszFileName = new wchar_t[ nCount ];

MultiByteToWideChar(
CP_ACP, 0, (LPCSTR)argv[ 1 ], -1, pwszFileName, nCount );

// check to see if the file is protected with DRM
BOOL bProtected;

HRESULT hr = WMIsContentProtected(
pwszFileName, &bProtected );

if ( SUCCEEDED( hr ) )
{
// if the file isn't protected with DRM,
// we don't need to continue
if ( !bProtected )
{
wprintf( L"Playback Allowed: True\n" );
}
else
{
// create a meta data editor
CComPtr<IWMMetadataEditor> spEditor;
hr = WMCreateEditor( &spEditor );

// open the media file
if ( SUCCEEDED( hr ) )
{
hr = spEditor->Open( pwszFileName );
}

// QI for the DRM editor
CComQIPtr<IWMDRMEditor> spDRMEditor( spEditor );
WMT_ATTR_DATATYPE wmtAttribute;
BYTE playbackAllowed[ 4 ];
WORD wLength;

if ( SUCCEEDED( hr ) && spDRMEditor )
{
// get the 'playback allowed' property value
hr = spDRMEditor->GetDRMProperty(
g_wszWMDRM_ActionAllowed_Playback,
&wmtAttribute, playbackAllowed,
&wLength );

if ( SUCCEEDED( hr ) )
{
wprintf( L"Playback Allowed: %s\n",
( (BOOL)*playbackAllowed ? L"True"
: L"False" ) );
}
}
}
}

CoUninitialize();
}

return 0;
}

This should be enough to determine if you want to keep a file or not.

Good luck.

Jeff

On Feb 25, 9:21*pm, Jeff <jeff.hill...@xxxxxx> wrote:Thanks a bunch all ... I have a coulle of options here with your
help. I'll give all of them a try and let you all know how it turns
out.

On Feb 29, 8:57*am, Boomer <marion...@xxxxxx> wrote:I found a way to remove those DRM files without programming (no fun,
but faster) ... Click on Library Tab > Music > In the navigation pane
right-click library and check/choose Show More Views > Online Stores

Obviously at this point it is querying and providing exactly what I
needed.

Thanks for all of your help.

-Boomer