Example usage for java.net URLConnection getPermission

Introduction

In this page you can find the example usage for java.net URLConnection getPermission.

Prototype

public Permission getPermission() throws IOException 

Source Link

Document

Returns a permission object representing the permission necessary to make the connection represented by this object.

Usage

From source file:Main.java

public static void main(String args[]) throws Exception {

    URL u = new URL("http://www.java2s.com");
    URLConnection uc = u.openConnection();

    System.out.println(uc.getPermission());
}

---

From source file:org.echocat.nodoodle.classloading.FileClassLoader.java

/**
 * This is a copy of {@link URLClassLoader#getPermissions(CodeSource)}.
 *
 * Returns the permissions for the given codesource object.
 * The implementation of this method first calls super.getPermissions
 * and then adds permissions based on the URL of the codesource.
 * <p>//from  w w  w .  java2s.  c o m
 * If the protocol of this URL is "jar", then the permission granted
 * is based on the permission that is required by the URL of the Jar
 * file.
 * <p>
 * If the protocol is "file"
 * and the path specifies a file, then permission to read that
 * file is granted. If protocol is "file" and the path is
 * a directory, permission is granted to read all files
 * and (recursively) all files and subdirectories contained in
 * that directory.
 * <p>
 * If the protocol is not "file", then
 * to connect to and accept connections from the URL's host is granted.
 * @param codesource the codesource
 * @return the permissions granted to the codesource
 */
@Override
protected PermissionCollection getPermissions(CodeSource codesource) {
    final PermissionCollection perms = super.getPermissions(codesource);
    final URL url = codesource.getLocation();
    Permission p;
    URLConnection urlConnection;
    try {
        urlConnection = url.openConnection();
        p = urlConnection.getPermission();
    } catch (IOException ignored) {
        p = null;
        urlConnection = null;
    }
    if (p instanceof FilePermission) {
        // if the permission has a separator char on the end,
        // it means the codebase is a directory, and we need
        // to add an additional permission to read recursively
        String path = p.getName();
        if (path.endsWith(File.separator)) {
            path += "-";
            p = new FilePermission(path, SecurityConstants.FILE_READ_ACTION);
        }
    } else if ((p == null) && (url.getProtocol().equals("file"))) {
        String path = url.getFile().replace('/', File.separatorChar);
        path = ParseUtil.decode(path);
        if (path.endsWith(File.separator)) {
            path += "-";
        }
        p = new FilePermission(path, SecurityConstants.FILE_READ_ACTION);
    } else {
        URL locUrl = url;
        if (urlConnection instanceof JarURLConnection) {
            locUrl = ((JarURLConnection) urlConnection).getJarFileURL();
        }
        final String host = locUrl.getHost();
        if (host != null && (host.length() > 0)) {
            p = new SocketPermission(host, SecurityConstants.SOCKET_CONNECT_ACCEPT_ACTION);
        }
    }
    // make sure the person that created this class loader
    // would have this permission

    if (p != null) {
        final SecurityManager sm = System.getSecurityManager();
        if (sm != null) {
            final Permission fp = p;
            doPrivileged(new PrivilegedAction<Void>() {
                @Override
                public Void run() throws SecurityException {
                    sm.checkPermission(fp);
                    return null;
                }
            }, _acc);
        }
        perms.add(p);
    }
    return perms;
}

---