/*

 * CDDL HEADER START

 *

 * The contents of this file are subject to the terms of the

 *

 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

 * or http://www.opensolaris.org/os/licensing.

 * See the License for the specific language governing permissions

 * and limitations under the License.

 *

 * When distributing Covered Code, include this CDDL HEADER in each

 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.

 * If applicable, add the following below this CDDL HEADER, with the

 * fields enclosed by brackets "[]" replaced with your own identifying

 * information: Portions Copyright [yyyy] [name of copyright owner]

 *

 * CDDL HEADER END

 */

/*

 * Copyright (c) 1999 by Sun Microsystems, Inc.

 * All rights reserved.

 *

 */

//  SLPV1SAttrMsg.java: SLPv1 Attribute request for server.

//  Author:           James Kempf

//  Created On:       Fri Sep 11 13:23:28 1998

//  Last Modified By: James Kempf

//  Last Modified On: Tue Oct 27 10:57:39 1998

//  Update Count:     19

//

package com.sun.slp;

import java.util.*;

import java.io.*;

/**

 * The SLPV1SAttrMsg class models the SLP server side attribute message.

 *

 * @author James Kempf

 */

class SLPV1SAttrMsg extends SAttrMsg {

    // For creating null reply.

    SLPV1SAttrMsg() {}

    // Construct a SLPV1SAttrMsg from the byte input stream. This will

    SLPV1SAttrMsg(SrvLocHeader hdr, DataInputStream dis)

	throws ServiceLocationException, IOException {

	super(hdr, dis);

    }

    // Construct an empty SLPV1SSrvMsg, for monolingual off.

    static SrvLocMsg makeEmptyReply(SLPHeaderV1 hdr)

	throws ServiceLocationException {

	SLPV1SAttrMsg msg = new SLPV1SAttrMsg();

	msg.hdr = hdr;

	msg.makeReply(new Vector(), null);

	return msg;

    }

    void initialize(DataInputStream dis)

	throws ServiceLocationException, IOException {

	SLPHeaderV1 hdr = (SLPHeaderV1)getHeader();

	StringBuffer buf = new StringBuffer();

	// Parse in the previous responder's list.

	hdr.parsePreviousRespondersIn(dis);

	// Parse in the URL or service type.

	hdr.getString(buf, dis);

	String urlOrServiceType = buf.toString().trim();

	// Decide whether this is a service type or service URL

	try {

	    URL = new ServiceURLV1(urlOrServiceType,

				   ServiceURL.LIFETIME_DEFAULT);

	    serviceType = null;

	} catch (IllegalArgumentException ex) {

	    // Check to make sure service type is right.

	    serviceType =

		hdr.checkServiceType(urlOrServiceType.toLowerCase());

	    URL = null;

	}

	// Parse in the scope and validate it.

	hdr.getString(buf, dis);

	String scope = buf.toString().toLowerCase().trim();

	hdr.validateScope(scope);

	// Change unscoped to default.

	if (scope.length() <= 0) {

	    scope = Defaults.DEFAULT_SCOPE;

	}

	hdr.scopes = new Vector();

	hdr.scopes.addElement(scope);

	// Parse in the attribute tags.

	hdr.getString(buf, dis);

	tags =

	    hdr.parseCommaSeparatedListIn(buf.toString().trim(), true);

	// Unescape tags.

	int i, n = tags.size();

	for (i = 0; i < n; i++) {

	    String tag = (String)tags.elementAt(i);

	    // Check for starting and ending wildcards.

	    boolean wildcardStart = false;

	    boolean wildcardEnd = false;

	    if (tag.startsWith("*")) {

		wildcardStart = true;

		tag = tag.substring(1, tag.length());

	    }

	    if (tag.endsWith("*")) {

		wildcardEnd = true;

		tag = tag.substring(0, tag.length()-1);

	    }

	    tag =

		ServiceLocationAttributeV1.unescapeAttributeString(tag,

								hdr.charCode);

	    if (wildcardStart) {

		tag = "*" + tag;

	    }

	    if (wildcardEnd) {

		tag = tag + "*";

	    }

	    tags.setElementAt(tag.trim(), i);

	}

	hdr.constructDescription("AttrRqst",

				 "         " +

				 (URL != null ? ("URL=``" + URL):

				  ("service type=``" + serviceType)) +

				 "''\n" +

				 "         tags=``" + tags + "''");

    }

    // Construct an SAttrMsg payload for reply to client.

    SrvLocMsg makeReply(Vector attrs, Hashtable auth)

	throws ServiceLocationException {

	SLPHeaderV1 hdr = ((SLPHeaderV1)getHeader()).makeReplyHeader();

	// We need to check whether this is an AttrRqst by type and

	//  if the type was an abstract type. If so, we simply return

	//  an empty reply, but we print a message to the log so the problem

	//  can be fixed.

	if (serviceType != null) {

	    ServiceType type = new ServiceType(serviceType);

	    ServiceStore store = ServiceTable.getServiceTable().store;

	    Vector types = store.findServiceTypes(type.getNamingAuthority(),

						  this.hdr.scopes);

	    int i, n = types.size();

	    for (i = 0; i < n; i++) {

		String stype = (String)types.elementAt(i);

		ServiceType ttype = new ServiceType(stype);

		if (ttype.isAbstractType() &&

		    type.equals(ttype.getAbstractTypeName())) {

		    // We are out of luck!

		    SLPConfig config = SLPConfig.getSLPConfig();

		    config.writeLog("v1_abstract_type_conflict",

				    new Object[] {serviceType,

						      ttype});

		    attrs.removeAllElements();

		}

	    }

	}

	hdr.iNumReplies = attrs.size();

	ByteArrayOutputStream baos = new ByteArrayOutputStream();

	hdr.parseAttributeVectorOut(attrs, baos); // attributes

	hdr.payload = baos.toByteArray();

	hdr.constructDescription("AttrRply",

				 "        attributes=``" + attrs + "''\n");

	return hdr;

    }

}