Example usage for android.os ParcelFileDescriptor MODE_WRITE_ONLY

Introduction

In this page you can find the example usage for android.os ParcelFileDescriptor MODE_WRITE_ONLY.

Prototype

int MODE_WRITE_ONLY

To view the source code for android.os ParcelFileDescriptor MODE_WRITE_ONLY.

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Document

For use with #open : open the file with write-only access.

Usage

From source file:net.sf.fakenames.fddemo.PermissionActivity.java

private String accessPattern(String access) {
    final int accessMode = ParcelFileDescriptor.parseMode(access);

    if ((accessMode & ParcelFileDescriptor.MODE_READ_ONLY) == accessMode) {
        return "read";
    }//from   w w w.  j a  va 2s .  com

    if ((accessMode & ParcelFileDescriptor.MODE_WRITE_ONLY) == accessMode) {
        return "write";
    }

    return "full";
}

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From source file:net.sf.xfd.provider.PublicProvider.java

@Override
public Uri canonicalize(@NonNull Uri uri) {
    try {/* ww w . ja  v a2s .  com*/
        base.assertAbsolute(uri);

        String grantMode = uri.getQueryParameter(URI_ARG_MODE);
        if (TextUtils.isEmpty(grantMode)) {
            grantMode = "r";
        }

        verifyMac(uri, grantMode, grantMode);

        final int flags = ParcelFileDescriptor.parseMode(grantMode);

        final Context context = getContext();
        assert context != null;

        final String packageName = context.getPackageName();

        final Uri canon = DocumentsContract.buildDocumentUri(packageName + FileProvider.AUTHORITY_SUFFIX,
                canonString(uri.getPath()));

        final int callerUid = Binder.getCallingUid();

        if (callerUid != Process.myUid()) {
            int grantFlags = Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION;

            if ((flags & ParcelFileDescriptor.MODE_READ_ONLY) == flags) {
                grantFlags |= Intent.FLAG_GRANT_READ_URI_PERMISSION;
            } else if ((flags & ParcelFileDescriptor.MODE_WRITE_ONLY) == flags)
                grantFlags |= Intent.FLAG_GRANT_WRITE_URI_PERMISSION;
            else {
                grantFlags |= Intent.FLAG_GRANT_WRITE_URI_PERMISSION;
                grantFlags |= Intent.FLAG_GRANT_READ_URI_PERMISSION;
            }

            final String[] packages;

            final String caller = getCallingPackage();
            if (caller != null) {
                packages = new String[] { caller };
            } else {
                final PackageManager pm = context.getPackageManager();
                packages = pm.getPackagesForUid(callerUid);
            }

            if (packages != null) {
                for (String pkg : packages) {
                    context.grantUriPermission(pkg, canon, grantFlags);
                }
            }
        }

        return canon;
    } catch (FileNotFoundException e) {
        return null;
    }
}

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From source file:com.hippo.content.FileProvider.java

/**
 * Copied from ContentResolver.java/*w  ww .j  a  va2  s  .  com*/
 */
private static int modeToMode(String mode) {
    int modeBits;
    if ("r".equals(mode)) {
        modeBits = ParcelFileDescriptor.MODE_READ_ONLY;
    } else if ("w".equals(mode) || "wt".equals(mode)) {
        modeBits = ParcelFileDescriptor.MODE_WRITE_ONLY | ParcelFileDescriptor.MODE_CREATE
                | ParcelFileDescriptor.MODE_TRUNCATE;
    } else if ("wa".equals(mode)) {
        modeBits = ParcelFileDescriptor.MODE_WRITE_ONLY | ParcelFileDescriptor.MODE_CREATE
                | ParcelFileDescriptor.MODE_APPEND;
    } else if ("rw".equals(mode)) {
        modeBits = ParcelFileDescriptor.MODE_READ_WRITE | ParcelFileDescriptor.MODE_CREATE;
    } else if ("rwt".equals(mode)) {
        modeBits = ParcelFileDescriptor.MODE_READ_WRITE | ParcelFileDescriptor.MODE_CREATE
                | ParcelFileDescriptor.MODE_TRUNCATE;
    } else {
        throw new IllegalArgumentException("Invalid mode: " + mode);
    }
    return modeBits;
}

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