[moved] unable to execute program for security reasons

[brewwindow]

Hi,

If I add 'UserEnvironment' capability to my program , then whenever I try to run media file stored in "\\System\\Apps" folder through my program ,I get warning tht "unable to execute program for security reasons" but media files do run.Wt could be reason for the same.
Please note that I don't get any such warning if I do not add 'UserEnvironment' capability to mmp.
I need UserEnvironment' capabiltiy to use record voice.

Regards,
brewwindow

[symbianyucca]

How excatly are you trying to run the media files ?

[brewwindow]

Hi,

I am using 'CMdaAudioPlayerUtility' to play media files and 'CMdaAudioRecorderUtility' is the one I am using to record voice.

Regards,
brewwindow

[symbianyucca]

So what is the code line that gives the error ?, also what is the path where you are trying to play the files from ?

[brewwindow]

I am getting warning popup when I try to play media file (though it runs successfully) from \\System\\Apps\\uuid_abc.mp3 .
I was playing files successfully from this path until I added 'UserEnvironment' capability to mmp

[symbianyucca]

That definetely should not happen, I never seen adding capabilities causing this error, since it is related to missing capabilities, not excess capabilities. anyway playing a file from non-protected folder should not require any capability. Anyway it would always good idea to actually specify the drive as well, most often in device any paths with no drive letter will fail completely.

I would actually suggest you to check a bit more on which actual line is causing the error.

[wizard_hu_]

If you also have .dll-s in your project, they will also need all capabilities which the .exe has.

[brewwindow]

Hi,
I rechecked with my old code which runs smoothly after uor reply and just added 'UserEnvironment' to the capability list in it .
Here also I get error popup
'Unable to execute file for security reasons' when I try t run media file stored in c:\\System\\Apps\\uuid_abc.mp3 .

regards

[symbianyucca]

Can you then show the code you are using, simply opening a audio file from non-protected folders should not give this error. The wizard's dll thing was good catch, so are you using any custom libaries on your project ?

[brewwindow]

No I am not using dll in project. I am putting up piece of code to run media and how I read from c:\\System\\Apps\\uuid_abc.mp3



iMdaPlayer= CMdaAudioPlayerUtility::NewL(*this, EMdaPriorityNormal,
EMdaPriorityPreferenceTimeAndQuality);

iMdaPlayer->UseSharedHeap();
iMdaPlayer->OpenFileL(iFile->Des());
iMdaPlayer->SetRepeats(KMdaRepeatForever, 0);
iMdaPlayer->Play();

//////////////////////////////////
iFile is populted as


TParse parse;
TFileName appPath;
TBuf <5> appDrive;
parse.Set(CEikonEnv::Static()->EikAppUi()->Application()->AppFullName(), NULL, NULL );
appDrive.Copy(parse.Drive());
TBuf<200> buf;
buf.Copy(appDrive);
buf.Append(_L16("\\System\\Apps\\"));
buf.Append(Utils::app_uid);
buf.Append(_L16("_"));
buf.Append(_L16("abc.mp3"));

[symbianyucca]

I never used UseSharedHeap, so maybe you could just remove that. Also you can not call play untill the callback for the opening is called with KErrNone.

[brewwindow]

UseSharedHeap did't helped and I am calling play on callback only as I have mentioned everything works fine without ...UserEnvironment' capability.

[symbianyucca]

It definetely should never work, since you can not call Play, untill teh file has been opened, anyway, if you are happy how it works without the UserEnvironment, then just don't have it. What was the original requirement on having it ?

[brewwindow]

I am using play only on callback, something like this
Media::MapcInitComplete(TInt aError, const TTimeIntervalMicroSeconds &aDuration)
{
if(iMdaPlayer && aError == KErrNone)
{
installationComplete = true;
if(iLoopCount>0)
iMdaPlayer->SetRepeats(iLoopCount, 0);
else if(iLoopCount == -1)
iMdaPlayer->SetRepeats(KMdaRepeatForever, 0);

if(playedBeforeinstallation)
{
isBeingPlayed = true;
iMdaPlayer->Play();
setVolume(iVolume);
playedBeforeinstallation = false;
}
}


I need this capability to use 'CMdaAudioRecorderUtility'.

Regards,
brewwindow

[brewwindow]

exact piece of code which actually causing error pop-up is

iMdaPlayer->OpenFileL(iFile->Des());