TikaImpl.java 文件源码

static PermissionCollection getRestrictedPermissions() {
    Permissions perms = new Permissions();
    // property/env access needed for parsing
    perms.add(new PropertyPermission("*", "read"));
    perms.add(new RuntimePermission("getenv.TIKA_CONFIG"));

    // add permissions for resource access:
    // classpath
    addReadPermissions(perms, JarHell.parseClassPath());
    // plugin jars
    if (TikaImpl.class.getClassLoader() instanceof URLClassLoader) {
        addReadPermissions(perms, ((URLClassLoader)TikaImpl.class.getClassLoader()).getURLs());
    }
    // jvm's java.io.tmpdir (needs read/write)
    perms.add(new FilePermission(System.getProperty("java.io.tmpdir") + System.getProperty("file.separator") + "-",
                                 "read,readlink,write,delete"));
    // current hacks needed for POI/PDFbox issues:
    perms.add(new SecurityPermission("putProviderProperty.BC"));
    perms.add(new SecurityPermission("insertProvider"));
    perms.add(new ReflectPermission("suppressAccessChecks"));
    // xmlbeans, use by POI, needs to get the context classloader
    perms.add(new RuntimePermission("getClassLoader"));
    perms.setReadOnly();
    return perms;
}