org.restheart.graphql.interceptors.GraphAppDefinitionPutPostChecker Maven / Gradle / Ivy

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RESTHeart MongoDB - GraphQL plugin
There is a newer version: 8.1.5
/*-
 * ========================LICENSE_START=================================
 * restheart-security
 * %%
 * Copyright (C) 2018 - 2024 SoftInstigate
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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 Affero General Public License
 * along with this program.  If not, see .
 * =========================LICENSE_END==================================
 */
package org.restheart.graphql.interceptors;

import java.util.Map;

import org.restheart.configuration.Configuration;
import org.restheart.configuration.ConfigurationException;
import org.restheart.exchange.MongoRequest;
import org.restheart.exchange.MongoResponse;
import org.restheart.graphql.GraphQLIllegalAppDefinitionException;
import org.restheart.graphql.GraphQLService;
import org.restheart.graphql.cache.AppDefinitionLoadingCache;
import org.restheart.graphql.models.builder.AppBuilder;
import org.restheart.plugins.Inject;
import static org.restheart.plugins.InterceptPoint.REQUEST_AFTER_AUTH;
import org.restheart.plugins.MongoInterceptor;
import org.restheart.plugins.OnInit;
import org.restheart.plugins.PluginsRegistry;
import org.restheart.plugins.RegisterPlugin;
import org.restheart.utils.BsonUtils;
import org.restheart.utils.HttpStatus;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


@RegisterPlugin(name="graphAppDefinitionPutPostChecker",
        description = "checks GraphQL application definitions on PUT and POST requests",
        interceptPoint = REQUEST_AFTER_AUTH,
        enabledByDefault = true
)
public class GraphAppDefinitionPutPostChecker implements MongoInterceptor {
    private static final Logger LOGGER = LoggerFactory.getLogger(GraphAppDefinitionPutPostChecker.class);

    private String db = GraphQLService.DEFAULT_APP_DEF_DB;
    private String coll = GraphQLService.DEFAULT_APP_DEF_COLLECTION;

    private boolean enabled = false;

    @Inject("rh-config")
    private Configuration config;

    @Inject("registry")
    private PluginsRegistry registry;

    @OnInit
    public void init() {
        try {
            Map graphqlArgs = config.getOrDefault("graphql", null);
            if (graphqlArgs != null) {
                this.db = arg(graphqlArgs, "db");
                this.coll = arg(graphqlArgs, "collection");
                this.enabled = isGQLSrvEnabled();
            } else {
                this.enabled = false;
            }
        } catch(ConfigurationException ce) {
            // nothing to do, using default values
        }
    }

    private boolean isGQLSrvEnabled() {
        var gql$ = registry.getServices().stream().filter(s -> s.getName().equals("graphql")).findFirst();
        return gql$.isPresent() && gql$.get().isEnabled();
    }

    @Override
    public void handle(MongoRequest request, MongoResponse response) throws Exception {
        var content = request.getContent();

        if (content.isDocument()) {
            var appDef = content.asDocument();

            try {
                var app = AppBuilder.build(BsonUtils.unflatten(appDef).asDocument());
                var appUri = app.getDescriptor().getUri() != null ? app.getDescriptor().getUri() :  app.getDescriptor().getAppName();
                AppDefinitionLoadingCache.getCache().put(appUri, app);
            } catch(GraphQLIllegalAppDefinitionException e) {
                LOGGER.debug("Wrong GraphQL App definition", e);
                response.setInError(HttpStatus.SC_BAD_REQUEST, "Wrong GraphQL App definition: " + e.getMessage(), e);
            }
        } else {
            var index = 0;

            for (var appDef: content.asArray()) {
                try {
                    var app = AppBuilder.build(BsonUtils.unflatten(appDef).asDocument());
                    var appUri = app.getDescriptor().getUri() != null ? app.getDescriptor().getUri() :  app.getDescriptor().getAppName();
                    AppDefinitionLoadingCache.getCache().put(appUri, app);
                } catch(GraphQLIllegalAppDefinitionException e) {
                    LOGGER.debug("Wrong GraphQL App definition", e);
                    response.setInError(HttpStatus.SC_BAD_REQUEST, "Wrong GraphQL App definition in document at index positon " + index + ": " + e.getMessage(), e);
                    break;
                }

                index++;
            }
        }
    }

    @Override
    public boolean resolve(MongoRequest request, MongoResponse response) {
        return enabled
            && this.db.equals(request.getDBName())
            && this.coll.equals(request.getCollectionName())
            && request.getContent() != null
            && ((request.isCollection() && request.isPost())
            || (request.isDocument() && request.isPut()));
    }
}