com.novell.ldap.LDAPUrl Maven / Gradle / Ivy
/* **************************************************************************
* $OpenLDAP: pkg/jldap/com/novell/ldap/LDAPUrl.java,v 1.47 2005/02/17 13:19:06 sunilk Exp $
*
* Copyright (C) 1999 - 2002 Novell, Inc. All Rights Reserved.
*
* THIS WORK IS SUBJECT TO U.S. AND INTERNATIONAL COPYRIGHT LAWS AND
* TREATIES. USE, MODIFICATION, AND REDISTRIBUTION OF THIS WORK IS SUBJECT
* TO VERSION 2.0.1 OF THE OPENLDAP PUBLIC LICENSE, A COPY OF WHICH IS
* AVAILABLE AT HTTP://WWW.OPENLDAP.ORG/LICENSE.HTML OR IN THE FILE "LICENSE"
* IN THE TOP-LEVEL DIRECTORY OF THE DISTRIBUTION. ANY USE OR EXPLOITATION
* OF THIS WORK OTHER THAN AS AUTHORIZED IN VERSION 2.0.1 OF THE OPENLDAP
* PUBLIC LICENSE, OR OTHER PRIOR WRITTEN CONSENT FROM NOVELL, COULD SUBJECT
* THE PERPETRATOR TO CRIMINAL AND CIVIL LIABILITY.
******************************************************************************/
package com.novell.ldap;
import java.io.BufferedInputStream;
import java.io.ByteArrayInputStream;
import java.io.Externalizable;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.net.MalformedURLException;
import java.util.Enumeration;
import com.novell.ldap.client.ArrayEnumeration;
import com.novell.ldap.client.Debug;
import com.novell.ldap.util.LDAPXMLHandler;
import com.novell.ldap.util.SAXEventMultiplexer;
import com.novell.ldap.util.ValueXMLhandler;
/**
*
* Encapsulates parameters of an LDAP URL query as defined in RFC2255.
*
* An LDAPUrl object can be passed to LDAPConnection.search to retrieve
* search results.
*
* Sample Code: UrlSearch.java
*
* @see LDAPConnection#search
*/
public class LDAPUrl implements java.lang.Cloneable,Externalizable
{
static private final int DEFAULT_SCOPE = LDAPConnection.SCOPE_BASE;
// Broken out parts of the URL
private boolean secure = false; // URL scheme ldap/ldaps
private boolean ipV6 = false; // TCP/IP V6
private String host = null; // Host
private int port = 0; // Port
private String dn = null; // Base DN
private String[] attrs = null; // Attributes
private String filter = null; // Filter
private int scope = DEFAULT_SCOPE; // Scope
private String[] extensions = null; // Extensions
/**
* This constructor was added to support default Serialization
*
*/
public LDAPUrl()
{
super();
}
/**
* Constructs a URL object with the specified string as the URL.
*
* @param url An LDAP URL string, e.g.
* "ldap://ldap.example.com:80/dc=example,dc=com?cn,
* sn?sub?(objectclass=inetOrgPerson)".
*
* @exception MalformedURLException The specified URL cannot be parsed.
*/
public LDAPUrl(String url) throws MalformedURLException {
parseURL( url );
return;
}
/**
* Constructs a URL object with the specified host, port, and DN.
*
* This form is used to create URL references to a particular object
* in the directory.
*
* @param host Host identifier of LDAP server, or null for
* "localhost".
*
* @param port The port number for LDAP server (use
* LDAPConnection.DEFAULT_PORT for default port).
*
* @param dn Distinguished name of the base object of the search.
*
*/
public LDAPUrl(String host,
int port,
String dn) {
this.host = host;
this.port = port;
this.dn = dn;
return;
}
/**
* Constructs an LDAP URL with all fields explicitly assigned, to
* specify an LDAP search operation.
*
* @param host Host identifier of LDAP server, or null for
* "localhost".
*
* @param port The port number for LDAP server (use
* LDAPConnection.DEFAULT_PORT for default port).
*
* @param dn Distinguished name of the base object of the search.
*
*
* @param attrNames Names or OIDs of attributes to retrieve. Passing a
* null array signifies that all user attributes are to be
* retrieved. Passing a value of "*" allows you to specify
* that all user attributes as well as any specified
* operational attributes are to be retrieved.
*
*
* @param scope Depth of search (in DN namespace). Use one of
* SCOPE_BASE, SCOPE_ONE, SCOPE_SUB from LDAPConnection.
*
*
* @param filter The search filter specifying the search criteria.
*
*
* @param extensions Extensions provide a mechanism to extend the
* functionality of LDAP URLs. Currently no
* LDAP URL extensions are defined. Each extension
* specification is a type=value expression, and may
* be null or empty. The =value part may be
* omitted. The expression may be prefixed with '!' if it
* is mandatory for the evaluation of the URL.
*/
public LDAPUrl(String host,
int port,
String dn,
String attrNames[],
int scope,
String filter,
String extensions[]) {
this.host = host;
this.port = port;
this.dn = dn;
this.attrs = (String[])attrNames.clone();
this.scope = scope;
this.filter = filter;
this.extensions = (String[])extensions.clone();
return;
}
/**
* Constructs an LDAP URL with all fields explicitly assigned, including
* isSecure, to specify an LDAP search operation.
*
* @param host Host identifier of LDAP server, or null for
* "localhost".
*
*
* @param port The port number for LDAP server (use
* LDAPConnection.DEFAULT_PORT for default port).
*
*
* @param dn Distinguished name of the base object of the search.
*
*
* @param attrNames Names or OIDs of attributes to retrieve. Passing a
* null array signifies that all user attributes are to be
* retrieved. Passing a value of "*" allows you to specify
* that all user attributes as well as any specified
* operational attributes are to be retrieved.
*
*
* @param scope Depth of search (in DN namespace). Use one of
* SCOPE_BASE, SCOPE_ONE, SCOPE_SUB from LDAPConnection.
*
*
* @param filter The search filter specifying the search criteria.
* from LDAPConnection: SCOPE_BASE, SCOPE_ONE, SCOPE_SUB.
*
*
* @param extensions Extensions provide a mechanism to extend the
* functionality of LDAP URLs. Currently no
* LDAP URL extensions are defined. Each extension
* specification is a type=value expression, and may
* be null or empty. The =value part may be
* omitted. The expression may be prefixed with '!' if it
* is mandatory for the evaluation of the URL.
*
*
* @param secure If true creates an LDAP URL of the ldaps type
*/
public LDAPUrl(String host,
int port,
String dn,
String attrNames[],
int scope,
String filter,
String extensions[],
boolean secure)
{
this.host = host;
this.port = port;
this.dn = dn;
this.attrs = attrNames;
this.scope = scope;
this.filter = filter;
this.extensions = (String[])extensions.clone();
this.secure = secure;
return;
}
/**
* Returns a clone of this URL object.
*
* @return clone of this URL object.
*/
public Object clone()
{
try {
return super.clone();
} catch( CloneNotSupportedException ce) {
throw new RuntimeException("Internal error, cannot create clone");
}
}
/**
* Decodes a URL-encoded string.
*
* Any occurences of %HH are decoded to the hex value represented.
* However, this method does NOT decode "+" into " ".
*
* @param URLEncoded String to decode.
*
* @return The decoded string.
*
* @exception MalformedURLException The URL could not be parsed.
*/
public static String decode(String URLEncoded) throws
MalformedURLException {
if( Debug.LDAP_DEBUG)
Debug.trace( Debug.urlParse, "decode(" + URLEncoded + ")");
int searchStart = 0;
int fieldStart;
fieldStart = URLEncoded.indexOf("%", searchStart);
// Return now if no encoded data
if( fieldStart < 0 ) {
return URLEncoded;
}
// Decode the %HH value and copy to new string buffer
int fieldEnd = 0; // end of previous field
int dataLen = URLEncoded.length();
StringBuffer decoded = new StringBuffer( dataLen );
while( true ) {
if( fieldStart > (dataLen-3) ) {
throw new MalformedURLException(
"LDAPUrl.decode: must be two hex characters following escape character '%'");
}
if( fieldStart < 0 )
fieldStart = dataLen;
// Copy to string buffer from end of last field to start of next
decoded.append( URLEncoded.substring(fieldEnd, fieldStart) );
fieldStart += 1;
if( fieldStart >= dataLen)
break;
fieldEnd = fieldStart + 2;
try {
decoded.append(
(char)Integer.parseInt(
URLEncoded.substring( fieldStart, fieldEnd ), 16) );
} catch ( NumberFormatException ex ) {
throw new MalformedURLException(
"LDAPUrl.decode: error converting hex characters to integer \""
+ ex.getMessage() + "\"");
}
searchStart = fieldEnd;
if( searchStart == dataLen )
break;
fieldStart = URLEncoded.indexOf("%", searchStart);
}
if( Debug.LDAP_DEBUG)
Debug.trace( Debug.urlParse, "decode returns(" + decoded + ")");
return( decoded.toString() );
}
/**
* Encodes an arbitrary string using the URL encoding rules.
*
*
Any illegal characters are encoded as %HH.
*
* @param toEncode The string to encode.
*
* @return The URL-encoded string.
*
* Comment: An illegal character consists of any non graphical US-ASCII character, Unsafe, or reserved characters.
*/
public static String encode(String toEncode) {
StringBuffer buffer = new StringBuffer(toEncode.length()); //empty but initial capicity of 'length'
String temp;
char currChar;
for(int i = 0; i < toEncode.length(); i++){
currChar = toEncode.charAt(i);
if (//all chars with no corresponding graphic US-ASCII:
(((int)currChar <= 0x1F) || ((int)currChar == 0x7F) ||
(((int)currChar >= 0x80) && ((int)currChar <= 0xFF))) ||
//Unsafe chars:
((currChar == '<' ) || (currChar == '>' ) || (currChar == '\"' ) ||
(currChar == '#' ) || (currChar == '%' ) || (currChar == '{' ) ||
(currChar == '}' ) || (currChar == '|' ) || (currChar == '\\' ) ||
(currChar == '^' ) || (currChar == '~' ) || (currChar == '[' ) ||
(currChar == '\'' ) || (currChar == ' ' )) ||
//Reserved chars:
((currChar == ';' ) || (currChar == '/' ) || (currChar == '?' ) ||
(currChar == ':' ) || (currChar == '@' ) || (currChar == '=' ) ||
(currChar == '&' ))){
temp = Integer.toHexString(currChar);
if (temp.length()==1)
buffer.append("%0"+temp);
else //if(temp.length()==2) this can only be two or one digit long.
buffer.append("%"+Integer.toHexString(currChar));
}
else
buffer.append(currChar);
}
return buffer.toString();
}
/**
* Returns an array of attribute names specified in the URL.
*
* @return An array of attribute names in the URL.
*/
public String[] getAttributeArray() {
return attrs;
}
/**
* Returns an enumerator for the attribute names specified in the URL.
*
* @return An enumeration of attribute names.
*/
public Enumeration getAttributes() {
return new ArrayEnumeration( attrs );
}
/**
* Returns the base distinguished name encapsulated in the URL.
*
* @return The base distinguished name specified in the URL, or null if none.
*/
public String getDN() {
return dn;
}
/**
* Sets the base distinguished name encapsulated in the URL.
*/
/* package */
void setDN(String dn) {
this.dn = dn;
return;
}
/**
* Returns any LDAP URL extensions specified, or null if none are
* specified. Each extension is a type=value expression. The =value part
* MAY be omitted. The expression MAY be prefixed with '!' if it is
* mandatory for evaluation of the URL.
*
* @return string array of extensions.
*/
public String[] getExtensions() {
return extensions;
}
/**
* Returns the search filter or null if none was specified.
*
* @return The search filter.
*/
public String getFilter() {
return filter;
}
/**
* Returns the name of the LDAP server in the URL.
*
* @return The host name specified in the URL.
*/
public String getHost() {
return host;
}
/**
* Returns the port number of the LDAP server in the URL.
*
* @return The port number in the URL.
*/
public int getPort()
{
if( port == 0) {
return LDAPConnection.DEFAULT_PORT;
}
return port;
}
/**
* Returns the depth of search. It returns one of the following from
* LDAPConnection: SCOPE_BASE, SCOPE_ONE, or SCOPE_SUB.
*
* @return The search scope.
*/
public int getScope()
{
return scope;
}
/**
* Returns true if the URL is of the type ldaps (LDAP over SSL, a predecessor
* to startTls)
*
* @return whether this is a secure LDAP url or not.
*/
public boolean isSecure(){
return secure;
}
/**
* Returns a valid string representation of this LDAP URL.
*
* @return The string representation of the LDAP URL.
*/
public String toString()
{
StringBuffer url = new StringBuffer( 256 );
// Scheme
if( secure ) {
url.append( "ldaps://" );
} else {
url.append( "ldap://" );
}
// Host:port/dn
if( ipV6 ) {
url.append( "[" + host + "]");
} else {
url.append( host);
}
// Port not specified
if( port != 0) {
url.append( ":" + port);
}
if( (dn == null) && (attrs == null) && (scope == DEFAULT_SCOPE) &&
(filter == null) && (extensions == null) ) {
return url.toString();
}
url.append( "/" );
if( dn != null) {
url.append( dn );
}
if( (attrs == null) && (scope == DEFAULT_SCOPE) &&
(filter == null) && (extensions == null) ) {
return url.toString();
}
// attributes
url.append( "?" );
if( attrs != null) { //should we check also for attrs != "*"
for( int i = 0; i < attrs.length; i++ ) {
url.append( attrs[i]);
if( i < (attrs.length - 1)) {
url.append( "," );
}
}
}
if( (scope == DEFAULT_SCOPE) &&
(filter == null) && (extensions == null) ) {
return url.toString();
}
// scope
url.append( "?" );
if( scope != DEFAULT_SCOPE ) {
if( scope == LDAPConnection.SCOPE_ONE) {
url.append( "one" );
} else {
url.append( "sub" );
}
}
if( (filter == null) && (extensions == null) ) {
return url.toString();
}
// filter
if( filter == null ) {
url.append( "?" );
} else {
url.append( "?" + getFilter() );
}
if( extensions == null) {
return url.toString();
}
// extensions
url.append( "?" );
if( extensions != null) {
for( int i = 0; i < extensions.length; i++ ) {
url.append( extensions[i]);
if( i < (extensions.length - 1) ) {
url.append( "," );
}
}
}
return url.toString();
}
private String[] parseList( String listStr, // input String
char delimiter, // list item delimiter
int listStart, // start of list
int listEnd) // end of list + 1
{
String[] list;
if( Debug.LDAP_DEBUG)
Debug.trace( Debug.urlParse, "parseList(" + listStr.substring(listStart,listEnd) + ")");
// Check for and empty string
if( (listEnd - listStart) < 1) {
return null;
}
// First count how many items are specified
int itemStart = listStart;
int itemEnd;
int itemCount = 0;
while( itemStart > 0 ) {
// itemStart == 0 if no delimiter found
itemCount += 1;
itemEnd = listStr.indexOf(delimiter, itemStart);
if( (itemEnd > 0) && (itemEnd < listEnd) ) {
itemStart = itemEnd + 1;
} else {
break;
}
}
// Now fill in the array with the attributes
itemStart = listStart;
list = new String[itemCount];
itemCount = 0;
while( itemStart > 0 ) {
itemEnd = listStr.indexOf(delimiter, itemStart);
if( itemStart <= listEnd ) {
if (itemEnd < 0 )
itemEnd = listEnd;
if( itemEnd > listEnd )
itemEnd = listEnd;
list[itemCount] = listStr.substring( itemStart, itemEnd);
itemStart = itemEnd + 1;
itemCount += 1;
} else {
break;
}
}
return list;
}
private void parseURL( String url) throws MalformedURLException
{
int scanStart = 0;
int scanEnd = url.length();
if( Debug.LDAP_DEBUG)
Debug.trace( Debug.urlParse, "parseURL(" + url + ")");
if( url == null)
throw new MalformedURLException("LDAPUrl: URL cannot be null");
// Check if URL is enclosed by < & >
if( url.charAt(scanStart) == '<') {
if( url.charAt(scanEnd - 1) != '>')
throw new MalformedURLException("LDAPUrl: URL bad enclosure");
scanStart += 1;
scanEnd -= 1;
if( Debug.LDAP_DEBUG)
Debug.trace( Debug.urlParse, "LDAPUrl: parseURL: Url is enclosed");
}
// Determine the URL scheme and set appropriate default port
if( url.substring(scanStart, scanStart + 4).equalsIgnoreCase( "URL:")) {
scanStart += 4;
}
if( url.substring(scanStart, scanStart + 7).equalsIgnoreCase( "ldap://")) {
scanStart += 7;
port = LDAPConnection.DEFAULT_PORT;
} else
if( url.substring(scanStart, scanStart + 8).equalsIgnoreCase( "ldaps://")) {
secure = true;
scanStart += 8;
port = LDAPConnection.DEFAULT_SSL_PORT;
} else {
throw new MalformedURLException("LDAPUrl: URL scheme is not ldap");
}
if( Debug.LDAP_DEBUG)
Debug.trace( Debug.urlParse, "parseURL: scheme is " + (secure?"ldaps":"ldap"));
// Find where host:port ends and dn begins
int dnStart = url.indexOf("/", scanStart);
int hostPortEnd = scanEnd;
boolean novell = false;
if( dnStart < 0) {
/*
* Kludge. check for ldap://111.222.333.444:389??cn=abc,o=company
*
* Check for broken Novell referral format. The dn is in
* the scope position, but the required slash is missing.
* This is illegal syntax but we need to account for it.
* Fortunately it can't be confused with anything real.
*/
dnStart = url.indexOf("?", scanStart);
if( dnStart > 0) {
if( url.charAt( dnStart+1) == '?') {
hostPortEnd = dnStart;
dnStart += 1;
novell = true;
if( Debug.LDAP_DEBUG)
Debug.trace( Debug.urlParse, "parseURL: wierd novell syntax found");
} else {
dnStart = -1;
}
}
} else {
hostPortEnd = dnStart;
}
// Check for IPV6 "[ipaddress]:port"
int portStart;
int hostEnd = hostPortEnd;
if( url.charAt(scanStart) == '[') {
hostEnd = url.indexOf(']', scanStart + 1);
if( (hostEnd >= hostPortEnd) || (hostEnd == -1)) {
throw new MalformedURLException("LDAPUrl: \"]\" is missing on IPV6 host name");
}
// Get host w/o the [ & ]
host = url.substring( scanStart +1, hostEnd);
portStart = url.indexOf(":", hostEnd);
if( (portStart < hostPortEnd) && (portStart != -1)) {
// port is specified
port = Integer.decode( url.substring(portStart+1, hostPortEnd) ).intValue();
if( Debug.LDAP_DEBUG)
Debug.trace( Debug.urlParse, "parseURL: IPV6 host " + host + " port " + port);
} else {
if( Debug.LDAP_DEBUG)
Debug.trace( Debug.urlParse, "parseURL: IPV6 host " + host + " default port " + port);
}
} else {
portStart = url.indexOf(":", scanStart);
// Isolate the host and port
if( (portStart < 0) || (portStart > hostPortEnd)) {
// no port is specified, we keep the default
host = url.substring(scanStart, hostPortEnd);
if( Debug.LDAP_DEBUG)
Debug.trace( Debug.urlParse, "parseURL: host " + host + " default port " + port);
} else {
// port specified in URL
host = url.substring(scanStart, portStart);
port = Integer.decode( url.substring(portStart+1, hostPortEnd) ).intValue();
if( Debug.LDAP_DEBUG)
Debug.trace( Debug.urlParse, "parseURL: host " + host + " port " + port);
}
}
scanStart = hostPortEnd + 1;
if( (scanStart >= scanEnd) || (dnStart < 0) )
return;
// Parse out the base dn
scanStart = dnStart + 1;
int attrsStart = url.indexOf('?', scanStart);
if( attrsStart < 0 ) {
dn = url.substring( scanStart, scanEnd);
} else {
dn = url.substring( scanStart, attrsStart);
}
if( Debug.LDAP_DEBUG)
Debug.trace( Debug.urlParse, "parseURL: dn " + dn);
scanStart = attrsStart + 1;
// Wierd novell syntax can have nothing beyond the dn
if( (scanStart >= scanEnd) || (attrsStart < 0) || novell )
return;
// Parse out the attributes
int scopeStart = url.indexOf('?', scanStart);
if( scopeStart < 0)
scopeStart = scanEnd;
attrs = parseList( url, ',', attrsStart + 1, scopeStart);
if( Debug.LDAP_DEBUG) {
if( attrs != null) {
Debug.trace( Debug.urlParse, "parseURL: " + attrs.length + " attributes" );
for( int i = 0; i < attrs.length; i++) {
Debug.trace( Debug.urlParse, "\t" + attrs[i] );
}
} else {
Debug.trace( Debug.urlParse, "parseURL: no attributes");
}
}
scanStart = scopeStart + 1;
if( scanStart >= scanEnd)
return;
// Parse out the scope
int filterStart = url.indexOf('?',scanStart);
String scopeStr;
if( filterStart < 0 ) {
scopeStr = url.substring( scanStart, scanEnd);
} else {
scopeStr = url.substring( scanStart, filterStart);
}
if( scopeStr.equalsIgnoreCase("")) {
scope = LDAPConnection.SCOPE_BASE;
if( Debug.LDAP_DEBUG)
scopeStr = "sub";
} else
if( scopeStr.equalsIgnoreCase("base")) {
scope = LDAPConnection.SCOPE_BASE;
} else
if( scopeStr.equalsIgnoreCase("one")) {
scope = LDAPConnection.SCOPE_ONE;
} else
if( scopeStr.equalsIgnoreCase("sub")) {
scope = LDAPConnection.SCOPE_SUB;
} else
if( scopeStr.equalsIgnoreCase("subordinateSubtree")) {
scope = LDAPConnection.SCOPE_SUBORDINATESUBTREE;
}else {
throw new MalformedURLException("LDAPUrl: URL invalid scope");
}
if( Debug.LDAP_DEBUG)
Debug.trace( Debug.urlParse, "parseURL: scope(" + scope + ") " + scopeStr);
scanStart = filterStart + 1;
if( (scanStart >= scanEnd) || (filterStart < 0) )
return;
// Parse out the filter
scanStart = filterStart + 1;
String filterStr;
int extStart = url.indexOf('?', scanStart);
if( extStart < 0 ) {
filterStr = url.substring( scanStart, scanEnd);
} else {
filterStr = url.substring( scanStart, extStart);
}
if( ! filterStr.equals("") ) {
filter = filterStr; // Only modify if not the default filter
}
if( Debug.LDAP_DEBUG)
Debug.trace( Debug.urlParse, "parseURL: filter " + getFilter() );
scanStart = extStart + 1;
if( (scanStart >= scanEnd) || (extStart < 0) )
return;
// Parse out the extensions
int end = url.indexOf('?', scanStart);
if( end > 0)
throw new MalformedURLException("LDAPUrl: URL has too many ? fields");
extensions = parseList( url, ',', scanStart, scanEnd);
if( Debug.LDAP_DEBUG) {
if( extensions != null) {
Debug.trace( Debug.urlParse, "parseURL: " + extensions.length + " extensions" );
for( int i = 0; i < extensions.length; i++) {
Debug.trace( Debug.urlParse, "\t" + extensions[i] );
}
} else {
Debug.trace( Debug.urlParse, "parseURL: no extensions");
}
}
return;
}
/**
* This method does DSML serialization of the instance.
*
* @param oout Outputstream where the serialzed data has to be written
*
* @throws IOException if write fails on OutputStream
*/
public void writeDSML(java.io.OutputStream oout) throws java.io.IOException
{
java.io.Writer out=new java.io.OutputStreamWriter(oout,"UTF-8");
out.write("" + toString() + " ");
out.close();
}
/**
* This method is used to deserialize the DSML encoded representation of
* this class.
* @param input InputStream for the DSML formatted data.
* @return Deserialized form of this class.
* @throws IOException when serialization fails.
*/
public static Object readDSML(InputStream input) throws IOException {
SAXEventMultiplexer xmlreader = new SAXEventMultiplexer();
xmlreader.setLDAPXMLHandler(getXMLHandler("LDAPUrl", null));
return (LDAPUrl) xmlreader.parseXML(input);
}
/**
* This method return the LDAPHandler which handles the XML (DSML) tags
* for this class
* @param tagname Name of the Root tag used to represent this class.
* @param parenthandler Parent LDAPXMLHandler for this tag.
* @return LDAPXMLHandler to handle this element.
*/
static LDAPXMLHandler getXMLHandler(
String tagname,
LDAPXMLHandler parenthandler) {
return new LDAPXMLHandler(tagname, parenthandler) {
protected void endElement() {
try {
LDAPUrl url = new LDAPUrl(getValue());
setObject(url);
} catch (MalformedURLException e) {
e.printStackTrace();
//ignore the Exception, and return null.
}
}
};
}
/**
* Writes the object state to a stream in XML format
* @param out The ObjectOutput stream where the Object in XML format
* is being written to
* @throws IOException - If I/O errors occur
*/
public void writeExternal(ObjectOutput out) throws IOException
{
StringBuffer buff = new StringBuffer();
buff.append(ValueXMLhandler.newLine(0));
buff.append(ValueXMLhandler.newLine(0));
String header = "";
header += "*************************************************************************\n";
header += "** The encrypted data above and below is the Class definition and ******\n";
header += "** other data specific to Java Serialization Protocol. The data ********\n";
header += "** which is of most application specific interest is as follows... ******\n";
header += "*************************************************************************\n";
header += "****************** Start of application data ****************************\n";
header += "*************************************************************************\n";
buff.append(header);
buff.append(ValueXMLhandler.newLine(0));
buff.append("");
buff.append(toString());
buff.append(" ");
buff.append(ValueXMLhandler.newLine(0));
buff.append(ValueXMLhandler.newLine(0));
String tail = "";
tail += "*************************************************************************\n";
tail += "****************** End of application data ******************************\n";
tail += "*************************************************************************\n";
buff.append(tail);
buff.append(ValueXMLhandler.newLine(0));
out.writeUTF(buff.toString());
}
/**
* Reads the serialized object from the underlying input stream.
* @param in The ObjectInput stream where the Serialized Object is being read from
* @throws IOException - If I/O errors occur
* @throws ClassNotFoundException - If the class for an object being restored
* cannot be found.
*/
public void readExternal(ObjectInput in)
throws IOException, ClassNotFoundException
{
String readData = in.readUTF();
String readProperties = readData.substring(readData.indexOf('<'),
(readData.lastIndexOf('>') + 1));
//Insert parsing logic here for separating whitespaces in non-text nodes
StringBuffer parsedBuff = new StringBuffer();
ValueXMLhandler.parseInput(readProperties, parsedBuff);
BufferedInputStream istream =
new BufferedInputStream(
new ByteArrayInputStream((parsedBuff.toString()).getBytes()));
LDAPUrl readObject =
(LDAPUrl)LDAPUrl.readDSML(istream);
this.parseURL( readObject.toString() );
//Garbage collect the readObject from readDSML()..
readObject = null;
}
}
© 2015 - 2025 Weber Informatics LLC | Privacy Policy