@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
final HttpServletRequest httpRequest = (HttpServletRequest) request;
final HttpServletResponse httpResponse = (HttpServletResponse) response;
// OPTIONS methods is used for CORS, no auth is required with this
// method
if (!"OPTIONS".equals(httpRequest.getMethod())) {
final String authHeader = httpRequest.getHeader("authorization");
if (authHeader == null) {
log.warn("Login failed : no auth header!");
httpResponse.setContentType("text/html");
httpResponse.sendError(
HttpServletResponse.SC_FORBIDDEN, "Unauthorized access, no authorization header.");
return;
}
final String encodedValue = authHeader.split(" ")[1];
final String[] decodedValue = Base64.base64Decode(encodedValue).split(":");
if (decodedValue.length != 2) {
log.warn("Login failed : malformed auth header!");
httpResponse.setContentType("text/html");
httpResponse.sendError(
HttpServletResponse.SC_FORBIDDEN,
"Unauthorized access, malformed authorization header.");
return;
}
final String login = decodedValue[0];
final String password = decodedValue[1];
if (!USR.equals(login)) {
log.info("Login failed for " + login);
httpResponse.setContentType("text/html");
httpResponse.sendError(
HttpServletResponse.SC_FORBIDDEN, "Unauthorized access, unknown user.");
return;
}
if (!PWD.equals(password)) {
log.info("Login failed for " + login);
httpResponse.setContentType("text/html");
httpResponse.sendError(
HttpServletResponse.SC_FORBIDDEN, "Unauthorized access, wrong password.");
return;
}
log.info("Login success for " + login);
}
chain.doFilter(request, response);
}
/* This function performs the decoding of the authentication header */
public void decodeAuthorizationHeader() {
// check if this request has basic authentication
if (!authHeader.contains("Basic ")) {
throw new WebApplicationException(Response.Status.BAD_REQUEST);
}
authHeader = authHeader.substring("Basic ".length());
String[] decodedHeader;
decodedHeader = Base64.base64Decode(authHeader).split(":");
if (decodedHeader == null) {
throw new WebApplicationException(Response.Status.BAD_REQUEST);
}
oAuthenticationAccount.setusername(decodedHeader[0]);
oAuthenticationAccount.setpassword(decodedHeader[1]);
}
protected boolean authenticate(HttpServletRequest request) {
if (provider.isAuthenticated(request.getSession())) return true;
String user = null, pass = null;
String authorization = request.getHeader("Authorization");
if (authorization != null) {
String userpass = Base64.base64Decode(authorization.substring(6));
user = userpass.substring(0, userpass.indexOf(":"));
pass = userpass.substring(userpass.indexOf(":") + 1);
}
if (provider.authenticate(request.getSession(), user, pass)) {
log.info("Web API authenticated " + request.getSession() + " for user " + user);
if (user != null) {
request.getSession().setAttribute(AUTHENTICATED_USER_SESSION_ATTRIBUTE, user);
}
return true;
}
return false;
}
@Override
public String decode(final String value) {
return com.sun.jersey.core.util.Base64.base64Decode(value);
}
@GET
@Produces({MediaType.TEXT_XML, MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON})
// Browser XML response, XML application response and JSON application response all in the same
// method automatically.
public Device getDevice() {
logger.debug("URL .../rest/devices/<device_name> called.");
javax.naming.Context context = null; // JDBC
DataSource dataSource = null;
Connection connection = null;
Device device = null;
// Check access rights and filters
// Get login credentials for HTTP basic authentication (over HTTPS):
String header = headers.getRequestHeader("authorization").get(0);
header = header.substring("Basic ".length());
String[] creds = new String(Base64.base64Decode(header)).split(":");
String username = creds[0];
String password = creds[1];
System.out.println(
"["
+ this.getClass()
+ "] Basic HTTP authentication ('username','password'): '"
+ username
+ "','"
+ password
+ "'.");
// Debug print. DO NOT LEAVE HERE BECAUSE EXPOSES THE CREDENTIALS TO CONSOLE/LOGS.
// Check authorization in the case this service is accidentally installed on a non-secure Tomcat
// server:
if (username == null || username.length() == 0)
throw new javax.ws.rs.WebApplicationException(
javax.ws.rs.core.Response.Status
.UNAUTHORIZED); // Proper HTTP 401 response when invalid user.
/* No need to have the method introduce RuntimeExceptions in its signature, see inheritance:
java.lang.Object
extended by java.lang.Throwable
extended by java.lang.Exception
extended by java.lang.RuntimeException
extended by javax.ws.rs.WebApplicationException */
// Parse request parameters from a HttpServletRequest (not the Jersey way of doing things but
// needed here because we lack context information):
device_name = req.getParameter("device_name");
logger_application_name = req.getParameter("logger_application_name");
timestamp = req.getParameter("timestamp");
start_time = req.getParameter("start_time");
end_time = req.getParameter("end_time");
// Test print of request parameters in different ways:
System.out.println(
"[" + this.getClass() + "] Full request URL: " + uriInfo.getRequestUri().toString());
System.out.println("[" + this.getClass() + "] URL request parameters ('name','value'):");
System.out.println("'device_name','" + device_name + "'");
System.out.println("'logger_application_name','" + logger_application_name + "'");
System.out.println("'timestamp','" + timestamp + "'");
System.out.println("'start_time','" + start_time + "'");
System.out.println("'end_time','" + end_time + "'");
// Check access restrictions: NOT NEEDED HERE BECAUSE THE URL IDENTIFIES & VERIFIES THE USER.
// if ( ( device_name == null || device_name.length() == 0 ) &&
// !ConditionalAccess.NAME_DB_ADMINISTRATOR.equals(username) )
// throw new javax.ws.rs.WebApplicationException(javax.ws.rs.core.Response.Status.FORBIDDEN);
// A proper HTTP 403 response when an authenticated user has insufficient rights to the
// resource.
// Wikipedia (http://en.wikipedia.org/wiki/List_of_HTTP_status_codes):
// "The request was a valid request, but the server is refusing to respond to it.[2] Unlike a
// 401 Unauthorized response, authenticating will
// make no difference.[2] On servers where authentication is required, this commonly means that
// the provided credentials were successfully
// authenticated but that the credentials still do not grant the client permission to access the
// resource (e.g. a recognized user attempting
// to access restricted content)."
// Run a database request and create a REST response
try {
logger.debug("intializing JDBC connection.");
context = new InitialContext();
dataSource = (DataSource) context.lookup("java:comp/env/jdbc/postgres");
connection = dataSource.getConnection();
logger.debug("Got connection..");
// Get named device from the database:
device =
Queries.findDevice(
connection, deviceName); // Returns first match only or null if no device.
logger.debug("Fetching device '" + deviceName + "' done.");
} catch (Exception e) {
e.printStackTrace();
logger.warn(e.getMessage());
} finally {
if (context != null) {
try {
connection.close();
context.close();
} catch (Exception e) {
System.out.print(e.toString());
}
context = null;
}
}
if (device == null)
// throw new RuntimeException("GET: Device (user) with the name '" + deviceName + "' not
// found!");
throw new javax.ws.rs.WebApplicationException(
javax.ws.rs.core.Response.Status
.NOT_FOUND); // Proper HTTP 404 response if resource was not found.
/* No need to have the method introduce RuntimeExceptions in its signature, see inheritance:
java.lang.Object
extended by java.lang.Throwable
extended by java.lang.Exception
extended by java.lang.RuntimeException
extended by javax.ws.rs.WebApplicationException */
return device;
}
