/**
* This file is part of Graylog2.
*
* Graylog2 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.
*
* Graylog2 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 Graylog2. If not, see <http://www.gnu.org/licenses/>.
*/
package org.graylog2.rest.resources.system;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonProperty;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.authz.annotation.RequiresAuthentication;
import org.apache.shiro.mgt.DefaultSecurityManager;
import org.apache.shiro.session.UnknownSessionException;
import org.apache.shiro.subject.Subject;
import org.apache.shiro.util.ThreadContext;
import com.wordnik.swagger.annotations.Api;
import com.wordnik.swagger.annotations.ApiOperation;
import com.wordnik.swagger.annotations.ApiParam;
import org.graylog2.rest.resources.RestResource;
import org.graylog2.security.ShiroSecurityContext;
import org.graylog2.users.User;
import org.graylog2.users.UserService;
import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.inject.Inject;
import javax.ws.rs.*;
import javax.ws.rs.container.ContainerRequestContext;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.SecurityContext;
import java.io.Serializable;
import java.util.Date;
import java.util.concurrent.TimeUnit;
import static javax.ws.rs.core.Response.noContent;
@Path("/system/sessions")
@Api(value = "System/Sessions", description = "Login for interactive user sessions")
public class SessionsResource extends RestResource {
private static final Logger LOG = LoggerFactory.getLogger(SessionsResource.class);
private final UserService userService;
private final DefaultSecurityManager securityManager;
@Inject
public SessionsResource(UserService userService,
DefaultSecurityManager securityManager) {
this.userService = userService;
this.securityManager = securityManager;
}
@POST
@ApiOperation(value = "Create a new session", notes = "This request creates a new session for a user or reactivates an existing session: the equivalent of logging in.")
public Session newSession(@Context ContainerRequestContext requestContext,
@ApiParam(name = "Login request", value = "Username and credentials", required = true) SessionCreateRequest createRequest) {
final Session result = new Session();
final SecurityContext securityContext = requestContext.getSecurityContext();
if (!(securityContext instanceof ShiroSecurityContext)) {
throw new InternalServerErrorException("Unsupported SecurityContext class, this is a bug!");
}
final ShiroSecurityContext shiroSecurityContext = (ShiroSecurityContext) securityContext;
// we treat the BASIC auth username as the sessionid
final String sessionId = shiroSecurityContext.getUsername();
// pretend that we had session id before
Serializable id = null;
if (sessionId != null && !sessionId.isEmpty()) {
id = sessionId;
}
final Subject subject = new Subject.Builder().sessionId(id).buildSubject();
ThreadContext.bind(subject);
try {
subject.login(new UsernamePasswordToken(createRequest.username, createRequest.password));
final User user = userService.load(createRequest.username);
if (user != null) {
long timeoutInMillis = user.getSessionTimeoutMs();
subject.getSession().setTimeout(timeoutInMillis);
} else {
// set a sane default. really we should be able to load the user from above.
subject.getSession().setTimeout(TimeUnit.HOURS.toMillis(8));
}
subject.getSession().touch();
// save subject in session, otherwise we can't get the username back in subsequent requests.
((DefaultSecurityManager) SecurityUtils.getSecurityManager()).getSubjectDAO().save(subject);
} catch (AuthenticationException e) {
LOG.warn("Unable to log in user " + createRequest.username, e);
} catch (UnknownSessionException e) {
subject.logout();
}
if (subject.isAuthenticated()) {
final org.apache.shiro.session.Session session = subject.getSession();
id = session.getId();
result.sessionId = id.toString();
// TODO is this even used by anyone yet?
result.validUntil = new DateTime(session.getLastAccessTime(), DateTimeZone.UTC).plus(session.getTimeout()).toDate();
return result;
}
throw new NotAuthorizedException("Invalid username or password", "Basic realm=\"Graylog2 Server session\"");
}
@DELETE
@ApiOperation(value = "Terminate an existing session", notes = "Destroys the session with the given ID: the equivalent of logging out.")
@Path("/{sessionId}")
@RequiresAuthentication
public Response terminateSession(@ApiParam(name = "sessionId", required = true) @PathParam("sessionId") String sessionId) {
final Subject subject = getSubject();
securityManager.logout(subject);
final org.apache.shiro.session.Session session = subject.getSession(false);
if (session == null || !session.getId().equals(sessionId)) {
return Response.status(Response.Status.NOT_FOUND).build();
}
return noContent().build();
}
@JsonAutoDetect
public static class SessionCreateRequest {
public SessionCreateRequest(){}
@JsonProperty(required = true)
public String username;
@JsonProperty(required = true)
public String password;
public String host;
}
@JsonAutoDetect
public static class Session {
@JsonProperty(required = true)
public Date validUntil;
@JsonProperty(required = true)
public String sessionId;
}
}