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/*
* Copyright (C) 2020 Graylog, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* .
*/
package org.graylog2.rest.resources.messages;
import com.codahale.metrics.annotation.Timed;
import com.eaio.uuid.UUID;
import com.google.common.net.InetAddresses;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import io.swagger.annotations.ApiResponse;
import io.swagger.annotations.ApiResponses;
import org.apache.shiro.authz.annotation.RequiresAuthentication;
import org.apache.shiro.authz.annotation.RequiresPermissions;
import org.graylog2.audit.jersey.NoAuditEvent;
import org.graylog2.indexer.IndexSetRegistry;
import org.graylog2.indexer.messages.DocumentNotFoundException;
import org.graylog2.indexer.messages.Messages;
import org.graylog2.indexer.results.ResultMessage;
import org.graylog2.inputs.codecs.CodecFactory;
import org.graylog2.plugin.Message;
import org.graylog2.plugin.ResolvableInetSocketAddress;
import org.graylog2.plugin.Tools;
import org.graylog2.plugin.configuration.Configuration;
import org.graylog2.plugin.inputs.codecs.Codec;
import org.graylog2.plugin.journal.RawMessage;
import org.graylog2.rest.models.messages.requests.MessageParseRequest;
import org.graylog2.rest.models.messages.responses.MessageTokens;
import org.graylog2.shared.rest.resources.RestResource;
import org.graylog2.shared.security.RestPermissions;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.annotation.Nullable;
import javax.inject.Inject;
import javax.validation.constraints.NotEmpty;
import javax.ws.rs.BadRequestException;
import javax.ws.rs.Consumes;
import javax.ws.rs.ForbiddenException;
import javax.ws.rs.GET;
import javax.ws.rs.NotFoundException;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.MediaType;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.charset.StandardCharsets;
import static com.google.common.base.Strings.isNullOrEmpty;
import static java.util.Objects.requireNonNull;
@RequiresAuthentication
@Api(value = "Messages", description = "Single messages")
@Produces(MediaType.APPLICATION_JSON)
@Path("/messages")
public class MessageResource extends RestResource {
private static final Logger LOG = LoggerFactory.getLogger(MessageResource.class);
private final Messages messages;
private final CodecFactory codecFactory;
private final IndexSetRegistry indexSetRegistry;
@Inject
public MessageResource(Messages messages, CodecFactory codecFactory, IndexSetRegistry indexSetRegistry) {
this.messages = requireNonNull(messages);
this.codecFactory = requireNonNull(codecFactory);
this.indexSetRegistry = requireNonNull(indexSetRegistry);
}
@GET
@Path("/{index}/{messageId}")
@Timed
@ApiOperation(value = "Get a single message.")
@ApiResponses(value = {
@ApiResponse(code = 404, message = "Specified index does not exist."),
@ApiResponse(code = 404, message = "Message does not exist.")
})
public ResultMessage search(@ApiParam(name = "index", value = "The index this message is stored in.", required = true)
@PathParam("index") String index,
@ApiParam(name = "messageId", required = true)
@PathParam("messageId") String messageId) throws IOException {
checkPermission(RestPermissions.MESSAGES_READ, messageId);
try {
final ResultMessage resultMessage = messages.get(messageId, index);
final Message message = resultMessage.getMessage();
checkMessageReadPermission(message);
return resultMessage;
} catch (DocumentNotFoundException e) {
final String msg = "Message " + messageId + " does not exist in index " + index;
LOG.error(msg, e);
throw new NotFoundException(msg, e);
}
}
private void checkMessageReadPermission(Message message) {
// if user has "admin" privileges, do not check stream permissions
if (isPermitted(RestPermissions.STREAMS_READ, "*")) {
return;
}
boolean permitted = false;
for (String streamId : message.getStreamIds()) {
if (isPermitted(RestPermissions.STREAMS_READ, streamId)) {
permitted = true;
break;
}
}
if (!permitted) {
throw new ForbiddenException("Not authorized to access message " + message.getId());
}
}
@POST
@Path("/parse")
@Timed
@Consumes(MediaType.APPLICATION_JSON)
@ApiOperation(value = "Parse a raw message")
@ApiResponses(value = {
@ApiResponse(code = 404, message = "Specified codec does not exist."),
@ApiResponse(code = 400, message = "Could not decode message.")
})
@NoAuditEvent("only used to parse a test message")
public ResultMessage parse(@ApiParam(name = "JSON body", required = true) MessageParseRequest request) {
Codec codec;
try {
final Configuration configuration = new Configuration(request.configuration());
codec = codecFactory.create(request.codec(), configuration);
} catch (IllegalArgumentException e) {
throw new NotFoundException(e);
}
final ResolvableInetSocketAddress remoteAddress = ResolvableInetSocketAddress.wrap(new InetSocketAddress(request.remoteAddress(), 1234));
final RawMessage rawMessage = new RawMessage(0, new UUID(), Tools.nowUTC(), remoteAddress, request.message().getBytes(StandardCharsets.UTF_8));
final Message message = decodeMessage(codec, remoteAddress, rawMessage);
return ResultMessage.createFromMessage(message);
}
private Message decodeMessage(Codec codec, ResolvableInetSocketAddress remoteAddress, RawMessage rawMessage) {
Message message;
try {
message = codec.decode(rawMessage);
} catch (Exception e) {
throw new BadRequestException("Could not decode message");
}
if (message == null) {
throw new BadRequestException("Could not decode message");
}
// Ensure the decoded Message has a source, otherwise creating a ResultMessage will fail
if (isNullOrEmpty(message.getSource())) {
final String address = InetAddresses.toAddrString(remoteAddress.getAddress());
message.setSource(address);
}
// Override source
final Configuration configuration = codec.getConfiguration();
if (configuration.stringIsSet(Codec.Config.CK_OVERRIDE_SOURCE)) {
message.setSource(configuration.getString(Codec.Config.CK_OVERRIDE_SOURCE));
}
return message;
}
@GET
@Path("/{index}/analyze")
@Timed
@ApiOperation(value = "Analyze a message string",
notes = "Returns what tokens/terms a message string (message or full_message) is split to.")
@RequiresPermissions(RestPermissions.MESSAGES_ANALYZE)
@ApiResponses(value = {
@ApiResponse(code = 404, message = "Specified index does not exist."),
})
public MessageTokens analyze(
@ApiParam(name = "index", value = "The index the message containing the string is stored in.", required = true)
@PathParam("index") String index,
@ApiParam(name = "analyzer", value = "The analyzer to use.")
@QueryParam("analyzer") @Nullable String analyzer,
@ApiParam(name = "string", value = "The string to analyze.", required = true)
@QueryParam("string") @NotEmpty String string) throws IOException {
final String indexAnalyzer = indexSetRegistry.getForIndex(index)
.map(indexSet -> indexSet.getConfig().indexAnalyzer())
.orElse("standard");
final String messageAnalyzer = analyzer == null ? indexAnalyzer : analyzer;
return MessageTokens.create(messages.analyze(string, index, messageAnalyzer));
}
}
