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/*
* Copyright 2007-2022 Ping Identity Corporation
* All Rights Reserved.
*/
/*
* Copyright 2007-2022 Ping Identity Corporation
*
* Licensed 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
*
* http://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.
*/
/*
* Copyright (C) 2007-2022 Ping Identity Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License (GPLv2 only)
* or the terms of the GNU Lesser General Public License (LGPLv2.1 only)
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see .
*/
package com.unboundid.ldap.sdk.schema;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Map;
import java.util.LinkedHashMap;
import com.unboundid.ldap.sdk.LDAPException;
import com.unboundid.ldap.sdk.ResultCode;
import com.unboundid.util.NotMutable;
import com.unboundid.util.NotNull;
import com.unboundid.util.Nullable;
import com.unboundid.util.StaticUtils;
import com.unboundid.util.ThreadSafety;
import com.unboundid.util.ThreadSafetyLevel;
import com.unboundid.util.Validator;
import static com.unboundid.ldap.sdk.schema.SchemaMessages.*;
/**
* This class provides a data structure that describes an LDAP matching rule
* schema element.
*/
@NotMutable()
@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
public final class MatchingRuleDefinition
extends SchemaElement
{
/**
* The serial version UID for this serializable class.
*/
private static final long serialVersionUID = 8214648655449007967L;
// Indicates whether this matching rule is declared obsolete.
private final boolean isObsolete;
// The set of extensions for this matching rule.
@NotNull private final Map extensions;
// The description for this matching rule.
@Nullable private final String description;
// The string representation of this matching rule.
@NotNull private final String matchingRuleString;
// The OID for this matching rule.
@NotNull private final String oid;
// The OID of the syntax for this matching rule.
@NotNull private final String syntaxOID;
// The set of names for this matching rule.
@NotNull private final String[] names;
/**
* Creates a new matching rule from the provided string representation.
*
* @param s The string representation of the matching rule to create, using
* the syntax described in RFC 4512 section 4.1.3. It must not be
* {@code null}.
*
* @throws LDAPException If the provided string cannot be decoded as a
* matching rule definition.
*/
public MatchingRuleDefinition(@NotNull final String s)
throws LDAPException
{
Validator.ensureNotNull(s);
matchingRuleString = s.trim();
// The first character must be an opening parenthesis.
final int length = matchingRuleString.length();
if (length == 0)
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_MR_DECODE_EMPTY.get());
}
else if (matchingRuleString.charAt(0) != '(')
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_MR_DECODE_NO_OPENING_PAREN.get(
matchingRuleString));
}
// Skip over any spaces until we reach the start of the OID, then read the
// OID until we find the next space.
int pos = skipSpaces(matchingRuleString, 1, length);
StringBuilder buffer = new StringBuilder();
pos = readOID(matchingRuleString, pos, length, buffer);
oid = buffer.toString();
// Technically, matching rule elements are supposed to appear in a specific
// order, but we'll be lenient and allow remaining elements to come in any
// order.
final ArrayList nameList = new ArrayList<>(1);
String descr = null;
Boolean obsolete = null;
String synOID = null;
final Map exts =
new LinkedHashMap<>(StaticUtils.computeMapCapacity(5));
while (true)
{
// Skip over any spaces until we find the next element.
pos = skipSpaces(matchingRuleString, pos, length);
// Read until we find the next space or the end of the string. Use that
// token to figure out what to do next.
final int tokenStartPos = pos;
while ((pos < length) && (matchingRuleString.charAt(pos) != ' '))
{
pos++;
}
// It's possible that the token could be smashed right up against the
// closing parenthesis. If that's the case, then extract just the token
// and handle the closing parenthesis the next time through.
String token = matchingRuleString.substring(tokenStartPos, pos);
if ((token.length() > 1) && (token.endsWith(")")))
{
token = token.substring(0, token.length() - 1);
pos--;
}
final String lowerToken = StaticUtils.toLowerCase(token);
if (lowerToken.equals(")"))
{
// This indicates that we're at the end of the value. There should not
// be any more closing characters.
if (pos < length)
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_MR_DECODE_CLOSE_NOT_AT_END.get(
matchingRuleString));
}
break;
}
else if (lowerToken.equals("name"))
{
if (nameList.isEmpty())
{
pos = skipSpaces(matchingRuleString, pos, length);
pos = readQDStrings(matchingRuleString, pos, length, token, nameList);
}
else
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_MR_DECODE_MULTIPLE_ELEMENTS.get(
matchingRuleString, "NAME"));
}
}
else if (lowerToken.equals("desc"))
{
if (descr == null)
{
pos = skipSpaces(matchingRuleString, pos, length);
buffer = new StringBuilder();
pos = readQDString(matchingRuleString, pos, length, token, buffer);
descr = buffer.toString();
}
else
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_MR_DECODE_MULTIPLE_ELEMENTS.get(
matchingRuleString, "DESC"));
}
}
else if (lowerToken.equals("obsolete"))
{
if (obsolete == null)
{
obsolete = true;
}
else
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_MR_DECODE_MULTIPLE_ELEMENTS.get(
matchingRuleString, "OBSOLETE"));
}
}
else if (lowerToken.equals("syntax"))
{
if (synOID == null)
{
pos = skipSpaces(matchingRuleString, pos, length);
buffer = new StringBuilder();
pos = readOID(matchingRuleString, pos, length, buffer);
synOID = buffer.toString();
}
else
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_MR_DECODE_MULTIPLE_ELEMENTS.get(
matchingRuleString, "SYNTAX"));
}
}
else if (lowerToken.startsWith("x-"))
{
pos = skipSpaces(matchingRuleString, pos, length);
final ArrayList valueList = new ArrayList<>(5);
pos = readQDStrings(matchingRuleString, pos, length, token, valueList);
final String[] values = new String[valueList.size()];
valueList.toArray(values);
if (exts.containsKey(token))
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_MR_DECODE_DUP_EXT.get(matchingRuleString,
token));
}
exts.put(token, values);
}
else
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_MR_DECODE_UNEXPECTED_TOKEN.get(
matchingRuleString, token));
}
}
description = descr;
syntaxOID = synOID;
if (syntaxOID == null)
{
throw new LDAPException(ResultCode.DECODING_ERROR,
ERR_MR_DECODE_NO_SYNTAX.get(matchingRuleString));
}
names = new String[nameList.size()];
nameList.toArray(names);
isObsolete = (obsolete != null);
extensions = Collections.unmodifiableMap(exts);
}
/**
* Creates a new matching rule with the provided information.
*
* @param oid The OID for this matching rule. It must not be
* {@code null}.
* @param name The names for this matching rule. It may be
* {@code null} if the matching rule should only be
* referenced by OID.
* @param description The description for this matching rule. It may be
* {@code null} if there is no description.
* @param syntaxOID The syntax OID for this matching rule. It must not be
* {@code null}.
* @param extensions The set of extensions for this matching rule.
* It may be {@code null} or empty if there should not be
* any extensions.
*/
public MatchingRuleDefinition(@NotNull final String oid,
@Nullable final String name,
@Nullable final String description,
@NotNull final String syntaxOID,
@Nullable final Map extensions)
{
this(oid, ((name == null) ? null : new String[] { name }), description,
false, syntaxOID, extensions);
}
/**
* Creates a new matching rule with the provided information.
*
* @param oid The OID for this matching rule. It must not be
* {@code null}.
* @param names The set of names for this matching rule. It may be
* {@code null} or empty if the matching rule should only
* be referenced by OID.
* @param description The description for this matching rule. It may be
* {@code null} if there is no description.
* @param isObsolete Indicates whether this matching rule is declared
* obsolete.
* @param syntaxOID The syntax OID for this matching rule. It must not be
* {@code null}.
* @param extensions The set of extensions for this matching rule.
* It may be {@code null} or empty if there should not be
* any extensions.
*/
public MatchingRuleDefinition(@NotNull final String oid,
@Nullable final String[] names,
@Nullable final String description,
final boolean isObsolete,
@NotNull final String syntaxOID,
@Nullable final Map extensions)
{
Validator.ensureNotNull(oid, syntaxOID);
this.oid = oid;
this.description = description;
this.isObsolete = isObsolete;
this.syntaxOID = syntaxOID;
if (names == null)
{
this.names = StaticUtils.NO_STRINGS;
}
else
{
this.names = names;
}
if (extensions == null)
{
this.extensions = Collections.emptyMap();
}
else
{
this.extensions = Collections.unmodifiableMap(extensions);
}
final StringBuilder buffer = new StringBuilder();
createDefinitionString(buffer);
matchingRuleString = buffer.toString();
}
/**
* Constructs a string representation of this matching rule definition in the
* provided buffer.
*
* @param buffer The buffer in which to construct a string representation of
* this matching rule definition.
*/
private void createDefinitionString(@NotNull final StringBuilder buffer)
{
buffer.append("( ");
buffer.append(oid);
if (names.length == 1)
{
buffer.append(" NAME '");
buffer.append(names[0]);
buffer.append('\'');
}
else if (names.length > 1)
{
buffer.append(" NAME (");
for (final String name : names)
{
buffer.append(" '");
buffer.append(name);
buffer.append('\'');
}
buffer.append(" )");
}
if (description != null)
{
buffer.append(" DESC '");
encodeValue(description, buffer);
buffer.append('\'');
}
if (isObsolete)
{
buffer.append(" OBSOLETE");
}
buffer.append(" SYNTAX ");
buffer.append(syntaxOID);
for (final Map.Entry e : extensions.entrySet())
{
final String name = e.getKey();
final String[] values = e.getValue();
if (values.length == 1)
{
buffer.append(' ');
buffer.append(name);
buffer.append(" '");
encodeValue(values[0], buffer);
buffer.append('\'');
}
else
{
buffer.append(' ');
buffer.append(name);
buffer.append(" (");
for (final String value : values)
{
buffer.append(" '");
encodeValue(value, buffer);
buffer.append('\'');
}
buffer.append(" )");
}
}
buffer.append(" )");
}
/**
* Retrieves the OID for this matching rule.
*
* @return The OID for this matching rule.
*/
@NotNull()
public String getOID()
{
return oid;
}
/**
* Retrieves the set of names for this matching rule.
*
* @return The set of names for this matching rule, or an empty array if it
* does not have any names.
*/
@NotNull()
public String[] getNames()
{
return names;
}
/**
* Retrieves the primary name that can be used to reference this matching
* rule. If one or more names are defined, then the first name will be used.
* Otherwise, the OID will be returned.
*
* @return The primary name that can be used to reference this matching rule.
*/
@NotNull()
public String getNameOrOID()
{
if (names.length == 0)
{
return oid;
}
else
{
return names[0];
}
}
/**
* Indicates whether the provided string matches the OID or any of the names
* for this matching rule.
*
* @param s The string for which to make the determination. It must not be
* {@code null}.
*
* @return {@code true} if the provided string matches the OID or any of the
* names for this matching rule, or {@code false} if not.
*/
public boolean hasNameOrOID(@NotNull final String s)
{
for (final String name : names)
{
if (s.equalsIgnoreCase(name))
{
return true;
}
}
return s.equalsIgnoreCase(oid);
}
/**
* Retrieves the description for this matching rule, if available.
*
* @return The description for this matching rule, or {@code null} if there
* is no description defined.
*/
@Nullable()
public String getDescription()
{
return description;
}
/**
* Indicates whether this matching rule is declared obsolete.
*
* @return {@code true} if this matching rule is declared obsolete, or
* {@code false} if it is not.
*/
public boolean isObsolete()
{
return isObsolete;
}
/**
* Retrieves the OID of the syntax for this matching rule.
*
* @return The OID of the syntax for this matching rule.
*/
@NotNull()
public String getSyntaxOID()
{
return syntaxOID;
}
/**
* Retrieves the set of extensions for this matching rule. They will be
* mapped from the extension name (which should start with "X-") to the set
* of values for that extension.
*
* @return The set of extensions for this matching rule.
*/
@NotNull()
public Map getExtensions()
{
return extensions;
}
/**
* {@inheritDoc}
*/
@Override()
@NotNull()
public SchemaElementType getSchemaElementType()
{
return SchemaElementType.MATCHING_RULE;
}
/**
* {@inheritDoc}
*/
@Override()
public int hashCode()
{
return oid.hashCode();
}
/**
* {@inheritDoc}
*/
@Override()
public boolean equals(@Nullable final Object o)
{
if (o == null)
{
return false;
}
if (o == this)
{
return true;
}
if (! (o instanceof MatchingRuleDefinition))
{
return false;
}
final MatchingRuleDefinition d = (MatchingRuleDefinition) o;
return (oid.equals(d.oid) &&
syntaxOID.equals(d.syntaxOID) &&
StaticUtils.stringsEqualIgnoreCaseOrderIndependent(names, d.names) &&
StaticUtils.bothNullOrEqualIgnoreCase(description, d.description) &&
(isObsolete == d.isObsolete) &&
extensionsEqual(extensions, d.extensions));
}
/**
* Retrieves a string representation of this matching rule definition, in the
* format described in RFC 4512 section 4.1.3.
*
* @return A string representation of this matching rule definition.
*/
@Override()
@NotNull()
public String toString()
{
return matchingRuleString;
}
}
