| /* |
| * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.security.x509; |
| |
| import java.io.IOException; |
| import java.util.Locale; |
| |
| import sun.security.util.*; |
| |
| /** |
| * This class implements the RFC822Name as required by the GeneralNames |
| * ASN.1 object. |
| * |
| * @author Amit Kapoor |
| * @author Hemma Prafullchandra |
| * @see GeneralName |
| * @see GeneralNames |
| * @see GeneralNameInterface |
| */ |
| public class RFC822Name implements GeneralNameInterface |
| { |
| private String name; |
| |
| /** |
| * Create the RFC822Name object from the passed encoded Der value. |
| * |
| * @param derValue the encoded DER RFC822Name. |
| * @exception IOException on error. |
| */ |
| public RFC822Name(DerValue derValue) throws IOException { |
| name = derValue.getIA5String(); |
| parseName(name); |
| } |
| |
| /** |
| * Create the RFC822Name object with the specified name. |
| * |
| * @param name the RFC822Name. |
| * @throws IOException on invalid input name |
| */ |
| public RFC822Name(String name) throws IOException { |
| parseName(name); |
| this.name = name; |
| } |
| |
| /** |
| * Parse an RFC822Name string to see if it is a valid |
| * addr-spec according to IETF RFC822 and RFC2459: |
| * [local-part@]domain |
| * <p> |
| * local-part@ could be empty for an RFC822Name NameConstraint, |
| * but the domain at least must be non-empty. Case is not |
| * significant. |
| * |
| * @param name the RFC822Name string |
| * @throws IOException if name is not valid |
| */ |
| public void parseName(String name) throws IOException { |
| if (name == null || name.length() == 0) { |
| throw new IOException("RFC822Name may not be null or empty"); |
| } |
| // See if domain is a valid domain name |
| String domain = name.substring(name.indexOf('@')+1); |
| if (domain.length() == 0) { |
| throw new IOException("RFC822Name may not end with @"); |
| } else { |
| //An RFC822 NameConstraint could start with a ., although |
| //a DNSName may not |
| if (domain.startsWith(".")) { |
| if (domain.length() == 1) |
| throw new IOException("RFC822Name domain may not be just ."); |
| } |
| } |
| } |
| |
| /** |
| * Return the type of the GeneralName. |
| */ |
| public int getType() { |
| return (GeneralNameInterface.NAME_RFC822); |
| } |
| |
| /** |
| * Return the actual name value of the GeneralName. |
| */ |
| public String getName() { |
| return name; |
| } |
| |
| /** |
| * Encode the RFC822 name into the DerOutputStream. |
| * |
| * @param out the DER stream to encode the RFC822Name to. |
| * @exception IOException on encoding errors. |
| */ |
| public void encode(DerOutputStream out) throws IOException { |
| out.putIA5String(name); |
| } |
| |
| /** |
| * Convert the name into user readable string. |
| */ |
| public String toString() { |
| return ("RFC822Name: " + name); |
| } |
| |
| /** |
| * Compares this name with another, for equality. |
| * |
| * @return true iff the names are equivalent |
| * according to RFC2459. |
| */ |
| public boolean equals(Object obj) { |
| if (this == obj) |
| return true; |
| |
| if (!(obj instanceof RFC822Name)) |
| return false; |
| |
| RFC822Name other = (RFC822Name)obj; |
| |
| // RFC2459 mandates that these names are |
| // not case-sensitive |
| return name.equalsIgnoreCase(other.name); |
| } |
| |
| /** |
| * Returns the hash code value for this object. |
| * |
| * @return a hash code value for this object. |
| */ |
| public int hashCode() { |
| return name.toUpperCase().hashCode(); |
| } |
| |
| /** |
| * Return constraint type:<ul> |
| * <li>NAME_DIFF_TYPE = -1: input name is different type from name (i.e. does not constrain) |
| * <li>NAME_MATCH = 0: input name matches name |
| * <li>NAME_NARROWS = 1: input name narrows name |
| * <li>NAME_WIDENS = 2: input name widens name |
| * <li>NAME_SAME_TYPE = 3: input name does not match or narrow name, but is same type |
| * </ul>. These results are used in checking NameConstraints during |
| * certification path verification. |
| * <p> |
| * [RFC2459] When the subjectAltName extension contains an Internet mail address, |
| * the address MUST be included as an rfc822Name. The format of an |
| * rfc822Name is an "addr-spec" as defined in RFC 822 [RFC 822]. An |
| * addr-spec has the form "local-part@domain". Note that an addr-spec |
| * has no phrase (such as a common name) before it, has no comment (text |
| * surrounded in parentheses) after it, and is not surrounded by "<" and |
| * ">". Note that while upper and lower case letters are allowed in an |
| * RFC 822 addr-spec, no significance is attached to the case. |
| * <p> |
| * @param inputName to be checked for being constrained |
| * @returns constraint type above |
| * @throws UnsupportedOperationException if name is not exact match, but narrowing and widening are |
| * not supported for this name type. |
| */ |
| public int constrains(GeneralNameInterface inputName) throws UnsupportedOperationException { |
| int constraintType; |
| if (inputName == null) |
| constraintType = NAME_DIFF_TYPE; |
| else if (inputName.getType() != (GeneralNameInterface.NAME_RFC822)) { |
| constraintType = NAME_DIFF_TYPE; |
| } else { |
| //RFC2459 specifies that case is not significant in RFC822Names |
| String inName = |
| (((RFC822Name)inputName).getName()).toLowerCase(Locale.ENGLISH); |
| String thisName = name.toLowerCase(Locale.ENGLISH); |
| if (inName.equals(thisName)) { |
| constraintType = NAME_MATCH; |
| } else if (thisName.endsWith(inName)) { |
| /* if both names contain @, then they had to match exactly */ |
| if (inName.indexOf('@') != -1) { |
| constraintType = NAME_SAME_TYPE; |
| } else if (inName.startsWith(".")) { |
| constraintType = NAME_WIDENS; |
| } else { |
| int inNdx = thisName.lastIndexOf(inName); |
| if (thisName.charAt(inNdx-1) == '@' ) { |
| constraintType = NAME_WIDENS; |
| } else { |
| constraintType = NAME_SAME_TYPE; |
| } |
| } |
| } else if (inName.endsWith(thisName)) { |
| /* if thisName contains @, then they had to match exactly */ |
| if (thisName.indexOf('@') != -1) { |
| constraintType = NAME_SAME_TYPE; |
| } else if (thisName.startsWith(".")) { |
| constraintType = NAME_NARROWS; |
| } else { |
| int ndx = inName.lastIndexOf(thisName); |
| if (inName.charAt(ndx-1) == '@') { |
| constraintType = NAME_NARROWS; |
| } else { |
| constraintType = NAME_SAME_TYPE; |
| } |
| } |
| } else { |
| constraintType = NAME_SAME_TYPE; |
| } |
| } |
| return constraintType; |
| } |
| |
| /** |
| * Return subtree depth of this name for purposes of determining |
| * NameConstraints minimum and maximum bounds. |
| * |
| * @returns distance of name from root |
| * @throws UnsupportedOperationException if not supported for this name type |
| */ |
| public int subtreeDepth() throws UnsupportedOperationException { |
| String subtree=name; |
| int i=1; |
| |
| /* strip off name@ portion */ |
| int atNdx = subtree.lastIndexOf('@'); |
| if (atNdx >= 0) { |
| i++; |
| subtree=subtree.substring(atNdx+1); |
| } |
| |
| /* count dots in dnsname, adding one if dnsname preceded by @ */ |
| for (; subtree.lastIndexOf('.') >= 0; i++) { |
| subtree=subtree.substring(0,subtree.lastIndexOf('.')); |
| } |
| |
| return i; |
| } |
| } |