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 * regarding copyright ownership.  The ASF licenses this file   *
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package org.apache.james.imap.decode.parser;

import org.apache.james.imap.api.ImapConstants;
import org.apache.james.imap.api.ImapMessage;
import org.apache.james.imap.api.Tag;
import org.apache.james.imap.api.message.response.StatusResponseFactory;
import org.apache.james.imap.api.process.ImapSession;
import org.apache.james.imap.decode.DecodingException;
import org.apache.james.imap.decode.ImapRequestLineReader;
import org.apache.james.imap.decode.base.AbstractImapCommandParser;
import org.apache.james.imap.message.request.AuthenticateRequest;
import org.apache.james.imap.message.request.IRAuthenticateRequest;

/**
 * Parses AUTHENTICATE commands and also support SASL-IR (RFC4959)
 */
public class AuthenticateCommandParser extends AbstractImapCommandParser {

    public AuthenticateCommandParser(StatusResponseFactory statusResponseFactory) {
        super(ImapConstants.AUTHENTICATE_COMMAND, statusResponseFactory);
    }

    @Override
    protected ImapMessage decode(ImapRequestLineReader request, Tag tag, ImapSession session) throws DecodingException {
        ImapMessage result;
        String authType = request.astring();
        try {
            result = new AuthenticateRequest(authType, tag);

            request.eol();
        } catch (DecodingException e) {
            // Ok this means we have some SASL-IR request to parse
            String initialClientResponse = request.astring();
            result = new IRAuthenticateRequest(authType, tag, initialClientResponse);

            request.eol();
        }
        return result;
    }
}
