Examples of sun.security.provider.PolicyParser

sun.security.provider.PolicyParser

The policy for a Java runtime (specifying which permissions are available for code from various principals) is represented as a separate persistent configuration. The configuration may be stored as a flat ASCII file, as a serialized binary file of the Policy class, or as a database.

The Java runtime creates one global Policy object, which is used to represent the static policy configuration file. It is consulted by a ProtectionDomain when the protection domain initializes its set of permissions.

The Policy init method parses the policy configuration file, and then populates the Policy object. The Policy object is agnostic in that it is not involved in making policy decisions. It is merely the Java runtime representation of the persistent policy configuration file.

When a protection domain needs to initialize its set of permissions, it executes code such as the following to ask the global Policy object to populate a Permissions object with the appropriate permissions:

 policy = Policy.getPolicy(); Permissions perms = policy.getPermissions(protectiondomain)

The protection domain contains CodeSource object, which encapsulates its codebase (URL) and public key attributes. It also contains the principals associated with the domain. The Policy object evaluates the global policy in light of who the principal is and what the code source is and returns an appropriate Permissions object. @author Roland Schemers @author Ram Marti @since 1.2


    private Permissions loadExcludedPolicy() {
  Permissions result = null;
  String name = getPolicyFileName(false);
  FileReader reader = null;
  PolicyParser parser = new PolicyParser(false);
  try {
      captureFileTime(false);
      reader = new FileReader(name);
      parser.read(reader);
  } catch (java.io.FileNotFoundException fnf) {
      //Just means there is no excluded Policy file, which
      // is the typical case
      parser = null;
  } catch (java.io.IOException ioe) {
            String defMsg="Error reading Policy file: "+name;
            String msg=localStrings.getLocalString("pc.file_read_error",defMsg,
                       new Object []{name, ioe});
      logger.log(Level.SEVERE,msg);
      throw new RuntimeException(defMsg);
  } catch ( sun.security.provider.PolicyParser.ParsingException pe) {
            String defMsg="Unable to parse Policy file: "+name;
            String msg=localStrings.getLocalString("pc.policy_parsing_exception",defMsg,
                       new Object []{name,pe});
      logger.log(Level.SEVERE,msg);
      throw new RuntimeException(defMsg);
  } finally {
      if (reader != null) {
    try {
        reader.close();
    } catch (Exception e) {
                    String defMsg="Unable to close Policy file: "+name;
                    String msg=localStrings.getLocalString("pc.file_close_error",defMsg,
                                new Object []{name,e});
        logger.log(Level.SEVERE,msg);
        throw new RuntimeException(defMsg);
    }
      }
  }


  if (parser != null) {
      Enumeration grants = parser.grantElements();
      while (grants.hasMoreElements()) {
    GrantEntry grant = (GrantEntry) grants.nextElement();
    if (grant.codeBase != null || grant.signedBy != null || 
        grant.principals.size() != 0) {
                        String msg=localStrings.getLocalString("pc.excluded_grant_context_ignored",

Examples of sun.security.provider.PolicyParser

Related Classes of sun.security.provider.PolicyParser