| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * https://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.directory.api.ldap.model.schema.syntaxCheckers; |
| |
| |
| import org.apache.directory.api.i18n.I18n; |
| import org.apache.directory.api.ldap.model.constants.SchemaConstants; |
| import org.apache.directory.api.ldap.model.schema.SyntaxChecker; |
| import org.apache.directory.api.util.Strings; |
| |
| |
| /** |
| * A SyntaxChecker which verifies that a value is a TeletexTerminalIdentifier according to |
| * RFC 4517 : |
| * <pre> |
| * teletex-id = ttx-term *(DOLLAR ttx-param) |
| * ttx-term = PrintableString ; terminal identifier |
| * ttx-param = ttx-key COLON ttx-value ; parameter |
| * ttx-key = "graphic" | "control" | "misc" | "page" | "private" |
| * ttx-value = *ttx-value-octet |
| * |
| * ttx-value-octet = %x00-23 | (%x5C "24") | %x25-5B | (%x5C "5C") | %x5D-FF |
| * </pre> |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| @SuppressWarnings("serial") |
| public final class TeletexTerminalIdentifierSyntaxChecker extends SyntaxChecker |
| { |
| /** |
| * A static instance of TeletexTerminalIdentifierSyntaxChecker |
| */ |
| public static final TeletexTerminalIdentifierSyntaxChecker INSTANCE = |
| new TeletexTerminalIdentifierSyntaxChecker( SchemaConstants.TELETEX_TERMINAL_IDENTIFIER_SYNTAX ); |
| |
| /** |
| * A static Builder for this class |
| */ |
| public static final class Builder extends SCBuilder<TeletexTerminalIdentifierSyntaxChecker> |
| { |
| /** |
| * The Builder constructor |
| */ |
| private Builder() |
| { |
| super( SchemaConstants.TELETEX_TERMINAL_IDENTIFIER_SYNTAX ); |
| } |
| |
| |
| /** |
| * Create a new instance of TeletexTerminalIdentifierSyntaxChecker |
| * @return A new instance of TeletexTerminalIdentifierSyntaxChecker |
| */ |
| @Override |
| public TeletexTerminalIdentifierSyntaxChecker build() |
| { |
| return new TeletexTerminalIdentifierSyntaxChecker( oid ); |
| } |
| } |
| |
| |
| /** |
| * Creates a new instance of TeletexTerminalIdentifier. |
| * |
| * @param oid the child's OID |
| */ |
| private TeletexTerminalIdentifierSyntaxChecker( String oid ) |
| { |
| super( oid ); |
| } |
| |
| |
| /** |
| * @return An instance of the Builder for this class |
| */ |
| public static Builder builder() |
| { |
| return new Builder(); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public boolean isValidSyntax( Object value ) |
| { |
| String strValue; |
| |
| if ( value == null ) |
| { |
| if ( LOG.isDebugEnabled() ) |
| { |
| LOG.debug( I18n.err( I18n.ERR_13210_SYNTAX_INVALID, "null" ) ); |
| } |
| |
| return false; |
| } |
| |
| if ( value instanceof String ) |
| { |
| strValue = ( String ) value; |
| } |
| else if ( value instanceof byte[] ) |
| { |
| strValue = Strings.utf8ToString( ( byte[] ) value ); |
| } |
| else |
| { |
| strValue = value.toString(); |
| } |
| |
| if ( strValue.length() == 0 ) |
| { |
| if ( LOG.isDebugEnabled() ) |
| { |
| LOG.debug( I18n.err( I18n.ERR_13210_SYNTAX_INVALID, value ) ); |
| } |
| |
| return false; |
| } |
| |
| // Search for the first '$' separator |
| int dollar = strValue.indexOf( '$' ); |
| |
| String terminalIdentifier = ( dollar == -1 ) ? strValue : strValue.substring( 0, dollar ); |
| |
| if ( terminalIdentifier.length() == 0 ) |
| { |
| // It should not be null |
| if ( LOG.isDebugEnabled() ) |
| { |
| LOG.debug( I18n.err( I18n.ERR_13210_SYNTAX_INVALID, value ) ); |
| } |
| |
| return false; |
| } |
| |
| if ( !Strings.isPrintableString( terminalIdentifier ) ) |
| { |
| // It's not a valid PrintableString |
| if ( LOG.isDebugEnabled() ) |
| { |
| LOG.debug( I18n.err( I18n.ERR_13210_SYNTAX_INVALID, value ) ); |
| } |
| |
| return false; |
| } |
| |
| if ( dollar == -1 ) |
| { |
| // No ttx-param : let's get out |
| if ( LOG.isDebugEnabled() ) |
| { |
| LOG.debug( I18n.msg( I18n.MSG_13701_SYNTAX_VALID, value ) ); |
| } |
| |
| return true; |
| } |
| |
| // Ok, now let's deal with optional ttx-params |
| String[] ttxParams = strValue.substring( dollar + 1 ).split( "\\$" ); |
| |
| if ( ttxParams.length == 0 ) |
| { |
| if ( LOG.isDebugEnabled() ) |
| { |
| LOG.debug( I18n.err( I18n.ERR_13210_SYNTAX_INVALID, value ) ); |
| } |
| |
| return false; |
| } |
| |
| for ( String ttxParam : ttxParams ) |
| { |
| int colon = ttxParam.indexOf( ':' ); |
| |
| if ( colon == -1 ) |
| { |
| // we must have a ':' separator |
| if ( LOG.isDebugEnabled() ) |
| { |
| LOG.debug( I18n.err( I18n.ERR_13210_SYNTAX_INVALID, value ) ); |
| } |
| |
| return false; |
| } |
| |
| String key = ttxParam.substring( 0, colon ); |
| |
| if ( key.startsWith( "graphic" ) |
| || key.startsWith( "control" ) |
| || key.startsWith( "misc" ) |
| || key.startsWith( "page" ) |
| || key.startsWith( "private" ) ) |
| { |
| if ( colon + 1 == ttxParam.length() ) |
| { |
| if ( LOG.isDebugEnabled() ) |
| { |
| LOG.debug( I18n.err( I18n.ERR_13210_SYNTAX_INVALID, value ) ); |
| } |
| |
| return false; |
| } |
| |
| boolean hasEsc = false; |
| |
| for ( byte b : Strings.getBytesUtf8( ttxParam ) ) |
| { |
| switch ( b ) |
| { |
| case 0x24: |
| // '$' is not accepted |
| if ( LOG.isDebugEnabled() ) |
| { |
| LOG.debug( I18n.err( I18n.ERR_13210_SYNTAX_INVALID, value ) ); |
| } |
| |
| return false; |
| |
| case 0x5c: |
| if ( hasEsc ) |
| { |
| // two following \ are not accepted |
| if ( LOG.isDebugEnabled() ) |
| { |
| LOG.debug( I18n.err( I18n.ERR_13210_SYNTAX_INVALID, value ) ); |
| } |
| |
| return false; |
| } |
| else |
| { |
| hasEsc = true; |
| } |
| |
| continue; |
| |
| case '2': |
| continue; |
| |
| case '4': |
| // We have found a "\24" |
| hasEsc = false; |
| continue; |
| |
| case '5': |
| continue; |
| |
| case 'c': |
| case 'C': |
| // We have found a "\5c" or a "\5C" |
| hasEsc = false; |
| continue; |
| |
| default: |
| if ( hasEsc ) |
| { |
| // A \ should be followed by "24" or "5c" or "5C" |
| return false; |
| } |
| |
| continue; |
| } |
| } |
| } |
| else |
| { |
| if ( LOG.isDebugEnabled() ) |
| { |
| LOG.debug( I18n.err( I18n.ERR_13210_SYNTAX_INVALID, value ) ); |
| } |
| |
| return false; |
| } |
| } |
| |
| if ( LOG.isDebugEnabled() ) |
| { |
| LOG.debug( I18n.msg( I18n.MSG_13701_SYNTAX_VALID, value ) ); |
| } |
| |
| return true; |
| } |
| } |