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/*
* SonarQube
* Copyright (C) 2009-2017 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.server.authentication;
import com.google.common.collect.Sets;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import java.util.Set;
import org.sonar.api.server.authentication.IdentityProvider;
import org.sonar.api.server.authentication.UserIdentity;
import org.sonar.api.utils.log.Logger;
import org.sonar.api.utils.log.Loggers;
import org.sonar.db.DbClient;
import org.sonar.db.DbSession;
import org.sonar.db.user.GroupDto;
import org.sonar.db.user.UserDto;
import org.sonar.db.user.UserGroupDto;
import org.sonar.server.authentication.event.AuthenticationEvent;
import org.sonar.server.authentication.event.AuthenticationException;
import org.sonar.server.organization.DefaultOrganization;
import org.sonar.server.organization.DefaultOrganizationProvider;
import org.sonar.server.organization.OrganizationFlags;
import org.sonar.server.user.ExternalIdentity;
import org.sonar.server.user.NewUser;
import org.sonar.server.user.UpdateUser;
import org.sonar.server.user.UserUpdater;
import org.sonar.server.usergroups.DefaultGroupFinder;
import static java.lang.String.format;
import static java.util.Collections.singletonList;
import static org.sonar.core.util.stream.MoreCollectors.uniqueIndex;
public class UserIdentityAuthenticator {
private static final Logger LOGGER = Loggers.get(UserIdentityAuthenticator.class);
private final DbClient dbClient;
private final UserUpdater userUpdater;
private final DefaultOrganizationProvider defaultOrganizationProvider;
private final OrganizationFlags organizationFlags;
private final DefaultGroupFinder defaultGroupFinder;
public UserIdentityAuthenticator(DbClient dbClient, UserUpdater userUpdater, DefaultOrganizationProvider defaultOrganizationProvider, OrganizationFlags organizationFlags,
DefaultGroupFinder defaultGroupFinder) {
this.dbClient = dbClient;
this.userUpdater = userUpdater;
this.defaultOrganizationProvider = defaultOrganizationProvider;
this.organizationFlags = organizationFlags;
this.defaultGroupFinder = defaultGroupFinder;
}
public UserDto authenticate(UserIdentity user, IdentityProvider provider, AuthenticationEvent.Source source) {
return register(user, provider, source);
}
private UserDto register(UserIdentity user, IdentityProvider provider, AuthenticationEvent.Source source) {
try (DbSession dbSession = dbClient.openSession(false)) {
String userLogin = user.getLogin();
UserDto userDto = dbClient.userDao().selectByLogin(dbSession, userLogin);
if (userDto != null && userDto.isActive()) {
registerExistingUser(dbSession, userDto, user, provider);
return userDto;
}
return registerNewUser(dbSession, user, provider, source);
}
}
private UserDto registerNewUser(DbSession dbSession, UserIdentity identity, IdentityProvider provider, AuthenticationEvent.Source source) {
if (!provider.allowsUsersToSignUp()) {
throw AuthenticationException.newBuilder()
.setSource(source)
.setLogin(identity.getLogin())
.setMessage(format("User signup disabled for provider '%s'", provider.getKey()))
.setPublicMessage(format("'%s' users are not allowed to sign up", provider.getKey()))
.build();
}
String email = identity.getEmail();
if (email != null && dbClient.userDao().doesEmailExist(dbSession, email)) {
throw AuthenticationException.newBuilder()
.setSource(source)
.setLogin(identity.getLogin())
.setMessage(format("Email '%s' is already used", email))
.setPublicMessage(format(
"You can't sign up because email '%s' is already used by an existing user. This means that you probably already registered with another account.",
email))
.build();
}
String userLogin = identity.getLogin();
return userUpdater.createAndCommit(dbSession, NewUser.builder()
.setLogin(userLogin)
.setEmail(identity.getEmail())
.setName(identity.getName())
.setExternalIdentity(new ExternalIdentity(provider.getKey(), identity.getProviderLogin()))
.build(), u -> syncGroups(dbSession, identity, u));
}
private void registerExistingUser(DbSession dbSession, UserDto userDto, UserIdentity identity, IdentityProvider provider) {
UpdateUser update = UpdateUser.create(userDto.getLogin())
.setEmail(identity.getEmail())
.setName(identity.getName())
.setExternalIdentity(new ExternalIdentity(provider.getKey(), identity.getProviderLogin()));
userUpdater.updateAndCommit(dbSession, update, u -> syncGroups(dbSession, identity, u));
}
private void syncGroups(DbSession dbSession, UserIdentity userIdentity, UserDto userDto) {
if (!userIdentity.shouldSyncGroups()) {
return;
}
String userLogin = userIdentity.getLogin();
Set userGroups = new HashSet<>(dbClient.groupMembershipDao().selectGroupsByLogins(dbSession, singletonList(userLogin)).get(userLogin));
Set identityGroups = userIdentity.getGroups();
LOGGER.debug("List of groups returned by the identity provider '{}'", identityGroups);
Collection groupsToAdd = Sets.difference(identityGroups, userGroups);
Collection groupsToRemove = Sets.difference(userGroups, identityGroups);
Collection allGroups = new ArrayList<>(groupsToAdd);
allGroups.addAll(groupsToRemove);
DefaultOrganization defaultOrganization = defaultOrganizationProvider.get();
Map groupsByName = dbClient.groupDao().selectByNames(dbSession, defaultOrganization.getUuid(), allGroups)
.stream()
.collect(uniqueIndex(GroupDto::getName));
addGroups(dbSession, userDto, groupsToAdd, groupsByName);
removeGroups(dbSession, userDto, groupsToRemove, groupsByName);
}
private void addGroups(DbSession dbSession, UserDto userDto, Collection groupsToAdd, Map groupsByName) {
groupsToAdd.stream().map(groupsByName::get).filter(Objects::nonNull).forEach(
groupDto -> {
LOGGER.debug("Adding group '{}' to user '{}'", groupDto.getName(), userDto.getLogin());
dbClient.userGroupDao().insert(dbSession, new UserGroupDto().setGroupId(groupDto.getId()).setUserId(userDto.getId()));
});
}
private void removeGroups(DbSession dbSession, UserDto userDto, Collection groupsToRemove, Map groupsByName) {
Optional defaultGroup = getDefaultGroup(dbSession);
groupsToRemove.stream().map(groupsByName::get)
.filter(Objects::nonNull)
// user should be member of default group only when organizations are disabled, as the IdentityProvider API doesn't handle yet
// organizations
.filter(group -> !defaultGroup.isPresent() || !group.getId().equals(defaultGroup.get().getId()))
.forEach(groupDto -> {
LOGGER.debug("Removing group '{}' from user '{}'", groupDto.getName(), userDto.getLogin());
dbClient.userGroupDao().delete(dbSession, groupDto.getId(), userDto.getId());
});
}
private Optional getDefaultGroup(DbSession dbSession) {
return organizationFlags.isEnabled(dbSession) ? Optional.empty() : Optional.of(defaultGroupFinder.findDefaultGroup(dbSession, defaultOrganizationProvider.get().getUuid()));
}
}
