EvilSecurityTests.java 文件源码

/**
 * checks exact file permissions, meaning those and only those for that path.
 */
static void assertExactPermissions(FilePermission expected, PermissionCollection actual) {
    String target = expected.getName(); // see javadocs
    Set<String> permissionSet = asSet(expected.getActions().split(","));
    boolean read = permissionSet.remove("read");
    boolean readlink = permissionSet.remove("readlink");
    boolean write = permissionSet.remove("write");
    boolean delete = permissionSet.remove("delete");
    boolean execute = permissionSet.remove("execute");
    assertTrue("unrecognized permission: " + permissionSet, permissionSet.isEmpty());
    assertEquals(read, actual.implies(new FilePermission(target, "read")));
    assertEquals(readlink, actual.implies(new FilePermission(target, "readlink")));
    assertEquals(write, actual.implies(new FilePermission(target, "write")));
    assertEquals(delete, actual.implies(new FilePermission(target, "delete")));
    assertEquals(execute, actual.implies(new FilePermission(target, "execute")));
}