Example usage for android.content.pm ApplicationInfo PRIVATE_FLAG_PRIVILEGED

Introduction

In this page you can find the example usage for android.content.pm ApplicationInfo PRIVATE_FLAG_PRIVILEGED.

Prototype

int PRIVATE_FLAG_PRIVILEGED

To view the source code for android.content.pm ApplicationInfo PRIVATE_FLAG_PRIVILEGED.

Click Source Link

Document

Value for #privateFlags : set to true if the application is permitted to hold privileged permissions.

Usage

From source file:com.android.packageinstaller.PackageInstallerActivity.java

private boolean isInstallRequestFromUnknownSource(Intent intent) {
    String callerPackage = getCallingPackage();
    if (callerPackage != null && intent.getBooleanExtra(Intent.EXTRA_NOT_UNKNOWN_SOURCE, false)) {
        try {/* w ww. ja v  a 2  s  .  c  o  m*/
            mSourceInfo = mPm.getApplicationInfo(callerPackage, 0);
            if (mSourceInfo != null) {
                if ((mSourceInfo.privateFlags & ApplicationInfo.PRIVATE_FLAG_PRIVILEGED) != 0) {
                    // Privileged apps are not considered an unknown source.
                    return false;
                }
            }
        } catch (NameNotFoundException e) {
        }
    }

    return true;
}

---

From source file:com.android.packageinstaller.PackageInstallerActivity.java

/** Get the originating uid if possible, or VerificationParams.NO_UID if not available */
private int getOriginatingUid(Intent intent) {
    // The originating uid from the intent. We only trust/use this if it comes from a
    // system application
    int uidFromIntent = intent.getIntExtra(Intent.EXTRA_ORIGINATING_UID, VerificationParams.NO_UID);

    // Get the source info from the calling package, if available. This will be the
    // definitive calling package, but it only works if the intent was started using
    // startActivityForResult,
    ApplicationInfo sourceInfo = getSourceInfo();
    if (sourceInfo != null) {
        if (uidFromIntent != VerificationParams.NO_UID
                && (mSourceInfo.privateFlags & ApplicationInfo.PRIVATE_FLAG_PRIVILEGED) != 0) {
            return uidFromIntent;

        }// w  w w  .jav  a2 s . c o m
        // We either didn't get a uid in the intent, or we don't trust it. Use the
        // uid of the calling package instead.
        return sourceInfo.uid;
    }

    // We couldn't get the specific calling package. Let's get the uid instead
    int callingUid;
    try {
        callingUid = ActivityManagerNative.getDefault().getLaunchedFromUid(getActivityToken());
    } catch (android.os.RemoteException ex) {
        Log.w(TAG, "Could not determine the launching uid.");
        // nothing else we can do
        return VerificationParams.NO_UID;
    }

    // If we got a uid from the intent, we need to verify that the caller is a
    // privileged system package before we use it
    if (uidFromIntent != VerificationParams.NO_UID) {
        String[] callingPackages = mPm.getPackagesForUid(callingUid);
        if (callingPackages != null) {
            for (String packageName : callingPackages) {
                try {
                    ApplicationInfo applicationInfo = mPm.getApplicationInfo(packageName, 0);

                    if ((applicationInfo.privateFlags & ApplicationInfo.PRIVATE_FLAG_PRIVILEGED) != 0) {
                        return uidFromIntent;
                    }
                } catch (NameNotFoundException ex) {
                    // ignore it, and try the next package
                }
            }
        }
    }
    // We either didn't get a uid from the intent, or we don't trust it. Use the
    // calling uid instead.
    return callingUid;
}

---