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org.apache.james.jmap.AuthenticationServlet Maven / Gradle / Ivy
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* regarding copyright ownership. The ASF licenses this file *
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* "License"); you may not use this file except in compliance *
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* http://www.apache.org/licenses/LICENSE-2.0 *
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package org.apache.james.jmap;
import java.io.IOException;
import javax.inject.Inject;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.james.jmap.api.AccessTokenManager;
import org.apache.james.jmap.api.SimpleTokenFactory;
import org.apache.james.jmap.api.SimpleTokenManager;
import org.apache.james.jmap.api.access.AccessToken;
import org.apache.james.jmap.exceptions.BadRequestException;
import org.apache.james.jmap.exceptions.InternalErrorException;
import org.apache.james.jmap.json.MultipleObjectMapperBuilder;
import org.apache.james.jmap.model.AccessTokenRequest;
import org.apache.james.jmap.model.AccessTokenResponse;
import org.apache.james.jmap.model.ContinuationTokenRequest;
import org.apache.james.jmap.model.ContinuationTokenResponse;
import org.apache.james.jmap.model.EndPointsResponse;
import org.apache.james.metrics.api.MetricFactory;
import org.apache.james.metrics.api.TimeMetric;
import org.apache.james.user.api.UsersRepository;
import org.apache.james.user.api.UsersRepositoryException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.annotations.VisibleForTesting;
public class AuthenticationServlet extends HttpServlet {
public static final String JSON_CONTENT_TYPE = "application/json";
public static final String JSON_CONTENT_TYPE_UTF8 = "application/json; charset=UTF-8";
private static final Logger LOG = LoggerFactory.getLogger(AuthenticationServlet.class);
private final ObjectMapper mapper;
private final UsersRepository usersRepository;
private final SimpleTokenManager simpleTokenManager;
private final AccessTokenManager accessTokenManager;
private final SimpleTokenFactory simpleTokenFactory;
private final MetricFactory metricFactory;
@Inject
@VisibleForTesting AuthenticationServlet(UsersRepository usersRepository, SimpleTokenManager simpleTokenManager, SimpleTokenFactory simpleTokenFactory, AccessTokenManager accessTokenManager, MetricFactory metricFactory) {
this.usersRepository = usersRepository;
this.simpleTokenManager = simpleTokenManager;
this.simpleTokenFactory = simpleTokenFactory;
this.accessTokenManager = accessTokenManager;
this.metricFactory = metricFactory;
this.mapper = new MultipleObjectMapperBuilder()
.registerClass(ContinuationTokenRequest.UNIQUE_JSON_PATH, ContinuationTokenRequest.class)
.registerClass(AccessTokenRequest.UNIQUE_JSON_PATH, AccessTokenRequest.class)
.build();
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
TimeMetric timeMetric = metricFactory.timer("JMAP-authentication-post");
try {
assertJsonContentType(req);
assertAcceptJsonOnly(req);
Object request = deserialize(req);
if (request instanceof ContinuationTokenRequest) {
handleContinuationTokenRequest((ContinuationTokenRequest)request, resp);
} else if (request instanceof AccessTokenRequest) {
handleAccessTokenRequest((AccessTokenRequest)request, resp);
}
} catch (BadRequestException e) {
LOG.warn("Invalid authentication request received.", e);
resp.sendError(HttpServletResponse.SC_BAD_REQUEST);
} catch (InternalErrorException e) {
LOG.error("Internal error", e);
resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
} finally {
timeMetric.stopAndPublish();
}
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
returnEndPointsResponse(resp);
}
@Override
protected void doDelete(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
accessTokenManager.revoke(AccessToken.fromString(req.getHeader("Authorization")));
resp.setStatus(HttpServletResponse.SC_NO_CONTENT);
}
private Object deserialize(HttpServletRequest req) throws BadRequestException {
Object request;
try {
request = mapper.readValue(req.getReader(), Object.class);
} catch (IOException e) {
throw new BadRequestException("Request can't be deserialized", e);
}
return request;
}
private void assertJsonContentType(HttpServletRequest req) {
if (! req.getContentType().equals(JSON_CONTENT_TYPE_UTF8)) {
throw new BadRequestException("Request ContentType header must be set to: " + JSON_CONTENT_TYPE_UTF8);
}
}
private void assertAcceptJsonOnly(HttpServletRequest req) {
String accept = req.getHeader("Accept");
if (accept == null || ! accept.contains(JSON_CONTENT_TYPE)) {
throw new BadRequestException("Request Accept header must be set to JSON content type");
}
}
private void handleContinuationTokenRequest(ContinuationTokenRequest request, HttpServletResponse resp) throws IOException {
resp.setContentType(JSON_CONTENT_TYPE_UTF8);
try {
ContinuationTokenResponse continuationTokenResponse = ContinuationTokenResponse
.builder()
.continuationToken(simpleTokenFactory.generateContinuationToken(request.getUsername()))
.methods(ContinuationTokenResponse.AuthenticationMethod.PASSWORD)
.build();
mapper.writeValue(resp.getOutputStream(), continuationTokenResponse);
} catch (Exception e) {
throw new InternalErrorException("Error while responding to continuation token", e);
}
}
private void handleAccessTokenRequest(AccessTokenRequest request, HttpServletResponse resp) throws IOException {
switch (simpleTokenManager.getValidity(request.getToken())) {
case EXPIRED:
returnRestartAuthentication(resp);
break;
case INVALID:
LOG.warn("Use of an invalid ContinuationToken : " + request.getToken().serialize());
returnUnauthorizedResponse(resp);
break;
case OK:
manageAuthenticationResponse(request, resp);
break;
}
}
private void manageAuthenticationResponse(AccessTokenRequest request, HttpServletResponse resp) throws IOException {
String username = request.getToken().getUsername();
if (authenticate(request, username)) {
returnAccessTokenResponse(resp, username);
} else {
LOG.info("Authentication failure for " + username);
returnUnauthorizedResponse(resp);
}
}
private boolean authenticate(AccessTokenRequest request, String username) {
boolean authenticated = false;
try {
authenticated = usersRepository.test(username, request.getPassword());
} catch (UsersRepositoryException e) {
LOG.error("Error while trying to validate authentication for user '{}'", username, e);
}
return authenticated;
}
private void returnAccessTokenResponse(HttpServletResponse resp, String username) throws IOException {
resp.setContentType(JSON_CONTENT_TYPE_UTF8);
resp.setStatus(HttpServletResponse.SC_CREATED);
AccessTokenResponse response = AccessTokenResponse
.builder()
.accessToken(accessTokenManager.grantAccessToken(username))
.api(JMAPUrls.JMAP)
.eventSource("/notImplemented")
.upload(JMAPUrls.UPLOAD)
.download(JMAPUrls.DOWNLOAD)
.build();
mapper.writeValue(resp.getOutputStream(), response);
}
private void returnEndPointsResponse(HttpServletResponse resp) throws IOException {
resp.setContentType(JSON_CONTENT_TYPE_UTF8);
resp.setStatus(HttpServletResponse.SC_OK);
EndPointsResponse response = EndPointsResponse
.builder()
.api(JMAPUrls.JMAP)
.eventSource("/notImplemented")
.upload(JMAPUrls.UPLOAD)
.download(JMAPUrls.DOWNLOAD)
.build();
mapper.writeValue(resp.getOutputStream(), response);
}
private void returnUnauthorizedResponse(HttpServletResponse resp) throws IOException {
resp.sendError(HttpServletResponse.SC_UNAUTHORIZED);
}
private void returnRestartAuthentication(HttpServletResponse resp) throws IOException {
resp.sendError(HttpServletResponse.SC_FORBIDDEN);
}
}