GSSNameImpl(GSSManagerImpl gssManager, GSSNameSpi mechElement) {
this.gssManager = gssManager;
appNameStr = printableName = mechElement.toString();
appNameType = printableNameType = mechElement.getStringNameType();
this.mechElement = mechElement;
elements = new HashMap<Oid, GSSNameSpi>(1);
elements.put(mechElement.getMechanism(), this.mechElement);
}
/**
* This method may return false negatives. But if it says two names are equals, then there is some
* mechanism that authenticates them as the same principal.
*/
public boolean equals(GSSName other) throws GSSException {
if (this.isAnonymous() || other.isAnonymous()) return false;
if (other == this) return true;
if (!(other instanceof GSSNameImpl))
return equals(gssManager.createName(other.toString(), other.getStringNameType()));
/*
* XXX Do a comparison of the appNameStr/appNameBytes if
* available. If that fails, then proceed with this test.
*/
GSSNameImpl that = (GSSNameImpl) other;
GSSNameSpi myElement = this.mechElement;
GSSNameSpi element = that.mechElement;
/*
* XXX If they are not of the same mechanism type, convert both to
* Kerberos since it is guaranteed to be present.
*/
if ((myElement == null) && (element != null)) {
myElement = this.getElement(element.getMechanism());
} else if ((myElement != null) && (element == null)) {
element = that.getElement(myElement.getMechanism());
}
if (myElement != null && element != null) {
return myElement.equals(element);
}
if ((this.appNameType != null) && (that.appNameType != null)) {
if (!this.appNameType.equals(that.appNameType)) {
return false;
}
byte[] myBytes = null;
byte[] bytes = null;
try {
myBytes = (this.appNameStr != null ? this.appNameStr.getBytes("UTF-8") : this.appNameBytes);
bytes = (that.appNameStr != null ? that.appNameStr.getBytes("UTF-8") : that.appNameBytes);
} catch (UnsupportedEncodingException e) {
// Won't happen
}
return Arrays.equals(myBytes, bytes);
}
return false;
}
private void init(GSSManagerImpl gssManager, Object appName, Oid appNameType, Oid mech)
throws GSSException {
this.gssManager = gssManager;
this.elements = new HashMap<Oid, GSSNameSpi>(gssManager.getMechs().length);
if (appName instanceof String) {
this.appNameStr = (String) appName;
/*
* If appNameType is null, then the nametype for this printable
* string is determined only by interrogating the
* mechanism. Thus, defer the setting of printableName and
* printableNameType till later.
*/
if (appNameType != null) {
printableName = appNameStr;
printableNameType = appNameType;
}
} else {
this.appNameBytes = (byte[]) appName;
}
this.appNameType = appNameType;
mechElement = getElement(mech);
/*
* printableName will be null if appName was in a byte[] or if
* appName was in a String but appNameType was null.
*/
if (printableName == null) {
printableName = mechElement.toString();
printableNameType = mechElement.getStringNameType();
}
/*
* At this point the GSSNameImpl has the following set:
* appNameStr or appNameBytes
* appNameType (could be null)
* printableName
* printableNameType
* mechElement (which also exists in the hashmap of elements)
*/
}
/**
* Returns a flat name representation for this object. The name format is defined in RFC 2743:
*
* <pre>
* Length Name Description
* 2 TOK_ID Token Identifier
* For exported name objects, this
* must be hex 04 01.
* 2 MECH_OID_LEN Length of the Mechanism OID
* MECH_OID_LEN MECH_OID Mechanism OID, in DER
* 4 NAME_LEN Length of name
* NAME_LEN NAME Exported name; format defined in
* applicable mechanism draft.
* </pre>
*
* Note that it is not required to canonicalize a name before calling export(). i.e., the name
* need not be an MN. If it is not an MN, an implementation defined algorithm can be used for
* choosing the mechanism which should export this name.
*
* @return the flat name representation for this object
* @exception GSSException with major codes NAME_NOT_MN, BAD_NAME, BAD_NAME, FAILURE.
*/
public byte[] export() throws GSSException {
if (mechElement == null) {
/* Use default mech */
mechElement = getElement(ProviderList.DEFAULT_MECH_OID);
}
byte[] mechPortion = mechElement.export();
byte[] oidBytes = null;
ObjectIdentifier oid = null;
try {
oid = new ObjectIdentifier(mechElement.getMechanism().toString());
} catch (IOException e) {
throw new GSSExceptionImpl(GSSException.FAILURE, "Invalid OID String ");
}
DerOutputStream dout = new DerOutputStream();
try {
dout.putOID(oid);
} catch (IOException e) {
throw new GSSExceptionImpl(GSSException.FAILURE, "Could not ASN.1 Encode " + oid.toString());
}
oidBytes = dout.toByteArray();
byte[] retVal = new byte[2 + 2 + oidBytes.length + 4 + mechPortion.length];
int pos = 0;
retVal[pos++] = 0x04;
retVal[pos++] = 0x01;
retVal[pos++] = (byte) (oidBytes.length >>> 8);
retVal[pos++] = (byte) oidBytes.length;
System.arraycopy(oidBytes, 0, retVal, pos, oidBytes.length);
pos += oidBytes.length;
retVal[pos++] = (byte) (mechPortion.length >>> 24);
retVal[pos++] = (byte) (mechPortion.length >>> 16);
retVal[pos++] = (byte) (mechPortion.length >>> 8);
retVal[pos++] = (byte) mechPortion.length;
System.arraycopy(mechPortion, 0, retVal, pos, mechPortion.length);
return retVal;
}
