/*
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* The contents of this file are subject to the terms of the Common Development and
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* Distribution License (the License). You may not use this file except in compliance with the
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* License.
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*
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* You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
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* specific language governing permission and limitations under the License.
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*
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* When distributing Covered Software, include this CDDL Header Notice in each file and include
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* the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
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* Header, with the fields enclosed by brackets [] replaced by your own identifying
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* information: "Portions Copyright [year] [name of copyright owner]".
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*
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* Copyright 2012-2016 ForgeRock AS.
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*/
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package org.forgerock.opendj.rest2ldap;
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import static org.forgerock.opendj.rest2ldap.Rest2ldapMessages.*;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.List;
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import java.util.Set;
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import org.forgerock.json.JsonPointer;
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import org.forgerock.json.JsonValue;
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import org.forgerock.json.resource.ResourceException;
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import org.forgerock.opendj.ldap.Attribute;
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import org.forgerock.opendj.ldap.AttributeDescription;
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import org.forgerock.opendj.ldap.ByteString;
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import org.forgerock.opendj.ldap.Connection;
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import org.forgerock.opendj.ldap.Entry;
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import org.forgerock.opendj.ldap.Filter;
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import org.forgerock.util.Function;
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import org.forgerock.util.promise.NeverThrowsException;
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import org.forgerock.util.promise.Promise;
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import static java.util.Collections.*;
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import static org.forgerock.opendj.ldap.Filter.*;
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import static org.forgerock.opendj.rest2ldap.Rest2Ldap.asResourceException;
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import static org.forgerock.opendj.rest2ldap.Utils.*;
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import static org.forgerock.util.promise.Promises.newResultPromise;
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/** An property mapper which provides a simple mapping from a JSON value to a single LDAP attribute. */
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public final class SimplePropertyMapper extends AbstractLdapPropertyMapper<SimplePropertyMapper> {
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private Function<ByteString, ?, NeverThrowsException> decoder;
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private Function<Object, ByteString, NeverThrowsException> encoder;
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SimplePropertyMapper(final AttributeDescription ldapAttributeName) {
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super(ldapAttributeName);
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}
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/**
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* Sets the decoder which will be used for converting LDAP attribute values
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* to JSON values.
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*
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* @param f
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* The function to use for decoding LDAP attribute values.
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* @return This property mapper.
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*/
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public SimplePropertyMapper decoder(final Function<ByteString, ?, NeverThrowsException> f) {
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this.decoder = f;
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return this;
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}
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/**
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* Sets the default JSON value which should be substituted when the LDAP attribute is not found in the LDAP entry.
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*
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* @param defaultValue
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* The default JSON value.
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* @return This property mapper.
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*/
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public SimplePropertyMapper defaultJsonValue(final Object defaultValue) {
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this.defaultJsonValues = defaultValue != null ? singletonList(defaultValue) : emptyList();
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return this;
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}
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/**
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* Sets the default JSON values which should be substituted when the LDAP attribute is not found in the LDAP entry.
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*
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* @param defaultValues
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* The default JSON values.
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* @return This property mapper.
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*/
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public SimplePropertyMapper defaultJsonValues(final Collection<?> defaultValues) {
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this.defaultJsonValues = defaultValues != null ? new ArrayList<>(defaultValues) : emptyList();
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return this;
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}
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/**
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* Sets the encoder which will be used for converting JSON values to LDAP
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* attribute values.
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*
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* @param f
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* The function to use for encoding LDAP attribute values.
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* @return This property mapper.
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*/
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public SimplePropertyMapper encoder(final Function<Object, ByteString, NeverThrowsException> f) {
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this.encoder = f;
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return this;
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}
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/**
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* Indicates that JSON values are base 64 encodings of binary data. Calling
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* this method with the value {@code true} is equivalent to the following:
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*
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* <pre>
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* mapper.decoder(...); // function that converts binary data to base 64
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* mapper.encoder(...); // function that converts base 64 to binary data
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* </pre>
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*
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* Passing in a value of {@code false} resets the encoding and decoding
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* functions to the default.
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*
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* @param isBinary {@code true} if this property is binary.
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* @return This property mapper.
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*/
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public SimplePropertyMapper isBinary(final boolean isBinary) {
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if (isBinary) {
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decoder = byteStringToBase64();
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encoder = base64ToByteString();
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} else {
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decoder = null;
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encoder = null;
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}
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return this;
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}
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@Override
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public String toString() {
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return "simple(" + ldapAttributeName + ")";
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}
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@Override
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Promise<Filter, ResourceException> getLdapFilter(final Connection connection, final Resource resource,
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final JsonPointer path, final JsonPointer subPath,
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final FilterType type, final String operator,
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final Object valueAssertion) {
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if (subPath.isEmpty()) {
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try {
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final ByteString va = valueAssertion != null ? encoder().apply(valueAssertion) : null;
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return newResultPromise(toFilter(type, ldapAttributeName.toString(), va));
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} catch (final Exception e) {
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// Invalid assertion value - bad request.
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return newBadRequestException(
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ERR_ILLEGAL_FILTER_ASSERTION_VALUE.get(String.valueOf(valueAssertion), path), e).asPromise();
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}
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} else {
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// This property mapper does not support partial filtering.
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return newResultPromise(alwaysFalse());
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}
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}
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@Override
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Promise<Attribute, ResourceException> getNewLdapAttributes(final Connection connection, final Resource resource,
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final JsonPointer path, final List<Object> newValues) {
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try {
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return newResultPromise(jsonToAttribute(newValues, ldapAttributeName, encoder()));
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} catch (final Exception ex) {
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return newBadRequestException(ERR_ENCODING_VALUES_FOR_FIELD.get(path, ex.getMessage())).asPromise();
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}
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}
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@Override
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SimplePropertyMapper getThis() {
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return this;
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}
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@SuppressWarnings("fallthrough")
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@Override
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Promise<JsonValue, ResourceException> read(final Connection connection, final Resource resource,
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final JsonPointer path, final Entry e) {
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try {
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final Set<Object> s = e.parseAttribute(ldapAttributeName).asSetOf(decoder(), defaultJsonValues);
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switch (s.size()) {
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case 0:
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return newResultPromise(null);
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case 1:
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if (attributeIsSingleValued()) {
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return newResultPromise(new JsonValue(s.iterator().next()));
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}
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// Fall-though: unexpectedly got multiple values. It's probably best to just return them.
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default:
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return newResultPromise(new JsonValue(new ArrayList<>(s)));
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}
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} catch (final Exception ex) {
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// The LDAP attribute could not be decoded.
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return asResourceException(ex).asPromise();
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}
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}
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private Function<ByteString, ?, NeverThrowsException> decoder() {
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return decoder == null ? byteStringToJson(ldapAttributeName) : decoder;
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}
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private Function<Object, ByteString, NeverThrowsException> encoder() {
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return encoder == null ? jsonToByteString(ldapAttributeName) : encoder;
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}
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}
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