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/**
* This file is part of Graylog.
*
* Graylog is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Graylog 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 Graylog. If not, see .
*/
package org.graylog2.rest.resources.system.ldap;
import com.codahale.metrics.annotation.Timed;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import org.apache.directory.api.ldap.model.cursor.CursorException;
import org.apache.directory.api.ldap.model.exception.LdapException;
import org.apache.directory.ldap.client.api.LdapConnectionConfig;
import org.apache.directory.ldap.client.api.LdapNetworkConnection;
import org.apache.shiro.authz.annotation.RequiresAuthentication;
import org.apache.shiro.authz.annotation.RequiresPermissions;
import org.graylog2.audit.AuditEventTypes;
import org.graylog2.audit.jersey.AuditEvent;
import org.graylog2.audit.jersey.NoAuditEvent;
import org.graylog2.plugin.database.ValidationException;
import org.graylog2.rest.models.system.ldap.requests.LdapSettingsRequest;
import org.graylog2.rest.models.system.ldap.requests.LdapTestConfigRequest;
import org.graylog2.rest.models.system.ldap.responses.LdapSettingsResponse;
import org.graylog2.rest.models.system.ldap.responses.LdapTestConfigResponse;
import org.graylog2.security.TrustAllX509TrustManager;
import org.graylog2.security.ldap.LdapConnector;
import org.graylog2.security.ldap.LdapSettingsImpl;
import org.graylog2.security.ldap.LdapSettingsService;
import org.graylog2.shared.rest.resources.RestResource;
import org.graylog2.shared.security.RestPermissions;
import org.graylog2.shared.security.ldap.LdapEntry;
import org.graylog2.shared.security.ldap.LdapSettings;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.inject.Inject;
import javax.validation.Valid;
import javax.validation.constraints.NotNull;
import javax.ws.rs.BadRequestException;
import javax.ws.rs.Consumes;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.InternalServerErrorException;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import java.io.IOException;
import java.net.URI;
import java.util.Collections;
import java.util.Map;
import java.util.Set;
import static com.google.common.base.MoreObjects.firstNonNull;
import static com.google.common.base.Strings.isNullOrEmpty;
import static org.apache.shiro.authz.annotation.Logical.OR;
@RequiresAuthentication
@Api(value = "System/LDAP", description = "LDAP settings")
@Path("/system/ldap")
public class LdapResource extends RestResource {
private static final Logger LOG = LoggerFactory.getLogger(LdapResource.class);
@Inject
private LdapSettingsService ldapSettingsService;
@Inject
private LdapSettingsImpl.Factory ldapSettingsFactory;
@Inject
private LdapConnector ldapConnector;
@GET
@Timed
@RequiresPermissions(RestPermissions.LDAP_EDIT)
@ApiOperation("Get the LDAP configuration if it is configured")
@Path("/settings")
@Produces(MediaType.APPLICATION_JSON)
public LdapSettingsResponse getLdapSettings() {
final LdapSettings ldapSettings = ldapSettingsService.load();
if (ldapSettings == null) {
return LdapSettingsResponse.emptyDisabled();
}
return LdapSettingsResponse.create(
ldapSettings.isEnabled(),
ldapSettings.getSystemUserName(),
ldapSettings.isSystemPasswordSet(),
ldapSettings.getUri(),
ldapSettings.isUseStartTls(),
ldapSettings.isTrustAllCertificates(),
ldapSettings.isActiveDirectory(),
ldapSettings.getSearchBase(),
ldapSettings.getSearchPattern(),
ldapSettings.getDisplayNameAttribute(),
ldapSettings.getDefaultGroup(),
ldapSettings.getGroupMapping(),
ldapSettings.getGroupSearchBase(),
ldapSettings.getGroupIdAttribute(),
ldapSettings.getAdditionalDefaultGroups(),
ldapSettings.getGroupSearchPattern());
}
@POST
@Timed
@RequiresPermissions(RestPermissions.LDAP_EDIT)
@ApiOperation("Test LDAP Configuration")
@Path("/test")
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
@NoAuditEvent("only used to test LDAP configuration")
public LdapTestConfigResponse testLdapConfiguration(@ApiParam(name = "Configuration to test", required = true)
@Valid @NotNull LdapTestConfigRequest request) {
final LdapConnectionConfig config = new LdapConnectionConfig();
final URI ldapUri = request.ldapUri();
config.setLdapHost(ldapUri.getHost());
config.setLdapPort(ldapUri.getPort());
config.setUseSsl(ldapUri.getScheme().startsWith("ldaps"));
config.setUseTls(request.useStartTls());
if (request.trustAllCertificates()) {
config.setTrustManagers(new TrustAllX509TrustManager());
}
if (!isNullOrEmpty(request.systemUsername())) {
config.setName(request.systemUsername());
if (!isNullOrEmpty(request.systemPassword())) {
// Use the given password for the connection test
config.setCredentials(request.systemPassword());
} else {
// If the config request has a username but no password set, we have to use the password from the database.
// This is because we don't expose the plain-text password through the API anymore and the settings form
// doesn't submit a password.
final LdapSettings ldapSettings = ldapSettingsService.load();
if (ldapSettings != null && !isNullOrEmpty(ldapSettings.getSystemPassword())) {
config.setCredentials(ldapSettings.getSystemPassword());
}
}
}
LdapNetworkConnection connection = null;
try {
try {
connection = ldapConnector.connect(config);
} catch (LdapException e) {
return LdapTestConfigResponse.create(false, false, false, Collections.emptyMap(), Collections.emptySet(), e.getMessage());
}
if (null == connection) {
return LdapTestConfigResponse.create(false, false, false, Collections.emptyMap(), Collections.emptySet(), "Could not connect to LDAP server");
}
boolean connected = connection.isConnected();
boolean systemAuthenticated = connection.isAuthenticated();
// the web interface allows testing the connection only, in that case we can bail out early.
if (request.testConnectOnly()) {
return LdapTestConfigResponse.create(connected, systemAuthenticated, false, Collections.emptyMap(), Collections.emptySet());
}
String userPrincipalName = null;
boolean loginAuthenticated = false;
Map entryMap = Collections.emptyMap();
String exception = null;
Set groups = Collections.emptySet();
try {
final LdapEntry entry = ldapConnector.search(
connection,
request.searchBase(),
request.searchPattern(),
"*",
request.principal(),
request.activeDirectory(),
request.groupSearchBase(),
request.groupIdAttribute(),
request.groupSearchPattern());
if (entry != null) {
userPrincipalName = entry.getBindPrincipal();
entryMap = entry.getAttributes();
groups = entry.getGroups();
}
} catch (CursorException | LdapException e) {
exception = e.getMessage();
}
try {
loginAuthenticated = ldapConnector.authenticate(connection, userPrincipalName, request.password());
} catch (Exception e) {
exception = e.getMessage();
}
return LdapTestConfigResponse.create(connected, systemAuthenticated, loginAuthenticated, entryMap, groups, exception);
} finally {
if (connection != null) {
try {
connection.close();
} catch (IOException e) {
LOG.warn("Unable to close LDAP connection.", e);
}
}
}
}
@PUT
@Timed
@RequiresPermissions(RestPermissions.LDAP_EDIT)
@ApiOperation("Update the LDAP configuration")
@Path("/settings")
@Consumes(MediaType.APPLICATION_JSON)
@AuditEvent(type = AuditEventTypes.LDAP_CONFIGURATION_UPDATE)
public void updateLdapSettings(@ApiParam(name = "JSON body", required = true)
@Valid @NotNull LdapSettingsRequest request) throws ValidationException {
// load the existing config, or create a new one. we only support having one, currently
final LdapSettings ldapSettings = firstNonNull(ldapSettingsService.load(), ldapSettingsFactory.createEmpty());
ldapSettings.setSystemUsername(request.systemUsername());
ldapSettings.setSystemPassword(request.systemPassword());
ldapSettings.setUri(request.ldapUri());
ldapSettings.setUseStartTls(request.useStartTls());
ldapSettings.setTrustAllCertificates(request.trustAllCertificates());
ldapSettings.setActiveDirectory(request.activeDirectory());
ldapSettings.setSearchPattern(request.searchPattern());
ldapSettings.setSearchBase(request.searchBase());
ldapSettings.setEnabled(request.enabled());
ldapSettings.setDisplayNameAttribute(request.displayNameAttribute());
ldapSettings.setDefaultGroup(request.defaultGroup());
ldapSettings.setGroupMapping(request.groupMapping());
ldapSettings.setGroupSearchBase(request.groupSearchBase());
ldapSettings.setGroupIdAttribute(request.groupIdAttribute());
ldapSettings.setGroupSearchPattern(request.groupSearchPattern());
ldapSettings.setAdditionalDefaultGroups(request.additionalDefaultGroups());
ldapSettingsService.save(ldapSettings);
}
@DELETE
@Timed
@RequiresPermissions(RestPermissions.LDAP_EDIT)
@ApiOperation("Remove the LDAP configuration")
@Path("/settings")
@AuditEvent(type = AuditEventTypes.LDAP_CONFIGURATION_DELETE)
public void deleteLdapSettings() {
ldapSettingsService.delete();
}
@GET
@ApiOperation(value = "Get the LDAP group to Graylog role mapping", notes = "The return value is a simple hash with keys being the LDAP group names and the values the corresponding Graylog role names.")
@RequiresPermissions(value = {RestPermissions.LDAPGROUPS_READ, RestPermissions.LDAP_EDIT}, logical = OR)
@Path("/settings/groups")
@Produces(MediaType.APPLICATION_JSON)
public Map readGroupMapping(){
final LdapSettings ldapSettings = firstNonNull(ldapSettingsService.load(), ldapSettingsFactory.createEmpty());
return ldapSettings.getGroupMapping();
}
@PUT
@RequiresPermissions(value = {RestPermissions.LDAPGROUPS_EDIT, RestPermissions.LDAP_EDIT}, logical = OR)
@ApiOperation(value = "Update the LDAP group to Graylog role mapping", notes = "Corresponds directly to the output of GET /system/ldap/settings/groups")
@Path("/settings/groups")
@Consumes(MediaType.APPLICATION_JSON)
@AuditEvent(type = AuditEventTypes.LDAP_GROUP_MAPPING_UPDATE)
public Response updateGroupMappingSettings(@ApiParam(name = "JSON body", required = true, value = "A hash in which the keys are the LDAP group names and values is the Graylog role name.")
@NotNull Map groupMapping) throws ValidationException {
final LdapSettings ldapSettings = firstNonNull(ldapSettingsService.load(), ldapSettingsFactory.createEmpty());
ldapSettings.setGroupMapping(groupMapping);
ldapSettingsService.save(ldapSettings);
return Response.noContent().build();
}
@GET
@ApiOperation(value = "Get the available LDAP groups", notes = "")
@RequiresPermissions(RestPermissions.LDAPGROUPS_READ)
@Path("/groups")
@Produces(MediaType.APPLICATION_JSON)
public Set readGroups(){
final LdapSettings ldapSettings = firstNonNull(ldapSettingsService.load(), ldapSettingsFactory.createEmpty());
if (!ldapSettings.isEnabled()) {
throw new BadRequestException("LDAP is disabled.");
}
if (isNullOrEmpty(ldapSettings.getGroupSearchBase()) || isNullOrEmpty(ldapSettings.getGroupIdAttribute())) {
throw new BadRequestException("LDAP group configuration settings are not set.");
}
final LdapConnectionConfig config = new LdapConnectionConfig();
final URI ldapUri = ldapSettings.getUri();
config.setLdapHost(ldapUri.getHost());
config.setLdapPort(ldapUri.getPort());
config.setUseSsl(ldapUri.getScheme().startsWith("ldaps"));
config.setUseTls(ldapSettings.isUseStartTls());
if (ldapSettings.isTrustAllCertificates()) {
config.setTrustManagers(new TrustAllX509TrustManager());
}
if (!isNullOrEmpty(ldapSettings.getSystemUserName()) && !isNullOrEmpty(ldapSettings.getSystemPassword())) {
config.setName(ldapSettings.getSystemUserName());
config.setCredentials(ldapSettings.getSystemPassword());
}
try (LdapNetworkConnection connection = ldapConnector.connect(config)) {
return ldapConnector.listGroups(connection,
ldapSettings.getGroupSearchBase(),
ldapSettings.getGroupSearchPattern(),
ldapSettings.getGroupIdAttribute()
);
} catch (IOException | LdapException e) {
LOG.error("Unable to retrieve available LDAP groups", e);
throw new InternalServerErrorException("Unable to retrieve available LDAP groups", e);
}
}
}
