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package com.sun.mail.auth;
import com.sun.mail.util.BASE64DecoderStream;
import com.sun.mail.util.BASE64EncoderStream;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
/**
* NTLM authentication using reflection with the jcifs classes.
*
* @author Luís Serralheiro
*/
public class Ntlm {
private PrintStream debugout; // if not null, debug output stream
public Ntlm(PrintStream debugout) {
this.debugout = debugout;
// NtlmPasswordAuthentication.debugout = debugout;
}
public String generateType1Msg(boolean useUnicode, int flags,
String domain, String workstation) throws IOException {
try {
Class t1MClass = Class.forName("jcifs.ntlmssp.Type1Message");
Constructor t1Mconstructor = t1MClass.getConstructor(
new Class[] { int.class, String.class, String.class });
Object t1m = t1Mconstructor.newInstance(
new Object[] { new Integer(flags), domain, workstation });
if (debugout != null)
debugout.println("DEBUG NTLM: type 1 message: " + t1m);
ByteArrayOutputStream bout = new ByteArrayOutputStream();
BASE64EncoderStream out =
new BASE64EncoderStream(bout, Integer.MAX_VALUE);
if (debugout != null)
debugout.println("DEBUG NTLM: type 1 message length: " +
((byte[]) t1MClass.getMethod("toByteArray",
new Class[0]).invoke(t1m, null)).length);
out.write((byte[]) t1MClass.getMethod("toByteArray",
new Class[0]).invoke(t1m, null));
out.flush();
out.close();
return new String(bout.toByteArray());
} catch (IOException ioex) {
if (debugout != null)
ioex.printStackTrace(debugout);
throw ioex; // pass it on
} catch (Exception ex) {
if (debugout != null)
ex.printStackTrace(debugout);
}
return null;
}
public String generateType3Msg(
String username,
String password,
String domain,
String workstation,
String challenge,
int flags,
int lmCompatibility) throws IOException {
try {
Object t2m;
Class t2MClass = Class.forName("jcifs.ntlmssp.Type2Message");
Constructor t2Mconstructor =
t2MClass.getConstructor(new Class[]{Class.forName("[B")});
try {
BASE64DecoderStream in = new BASE64DecoderStream(
new ByteArrayInputStream(challenge.getBytes()));
byte[] bytes = new byte[in.available()];
in.read(bytes);
t2m = t2Mconstructor.newInstance(new Object[]{bytes});
} catch (IOException ex) {
IOException ioex = new IOException("Invalid Type2 message");
ioex.initCause(ex);
throw ioex;
}
Class t3MClass = Class.forName("jcifs.ntlmssp.Type3Message");
Constructor t3Mconstructor = t3MClass.getConstructor(
new Class[]{
t2MClass,
String.class,
String.class,
String.class,
String.class,
int.class});
Object t3m = t3Mconstructor.newInstance(new Object[]{
t2m,
password,
domain == null ? "" : domain,
username,
workstation,
new Integer(flags)});
ByteArrayOutputStream bout = new ByteArrayOutputStream();
BASE64EncoderStream out =
new BASE64EncoderStream(bout, Integer.MAX_VALUE);
out.write((byte[]) t3MClass.getMethod("toByteArray",
new Class[0]).invoke(t3m, null));
out.flush();
out.close();
return new String(bout.toByteArray());
} catch (InvocationTargetException itex) {
if (debugout != null)
itex.printStackTrace(debugout);
Throwable t = itex.getTargetException();
if (t instanceof IOException)
throw (IOException)t;
IOException ioex = new IOException(
"Ntlm.generateType3Msg failed" +
"; Exception: " + t);
ioex.initCause(itex);
throw ioex;
} catch (IOException ioex) {
if (debugout != null)
ioex.printStackTrace(debugout);
throw ioex; // pass it on
} catch (Exception ex) {
if (debugout != null)
ex.printStackTrace(debugout);
}
return null;
}
}
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