Examples of org.apache.jena.atlas.web.auth.PreemptiveBasicAuthenticator

org.apache.jena.atlas.web.auth.PreemptiveBasicAuthenticator
A decorator for other authenticators that may be used to enable preemptive basic authentication.
This can only be used with servers that support Basic HTTP authentication. For any other authentication scheme the use of this authenticator will result in authentication failures.

Security Concerns

It is important to note that preemptive basic authentication is less secure because it can expose credentials to servers that do not require them.

Standard vs Proxy Authentication

Doing preemptive authentication requires knowing in advance whether you will be doing standard or proxy authentication i.e. whether the remote server will challenge with 401 or 407. If you need both you can take advantage of this being a decorator and simply layer multiple instances of this.

However you must remember that this only works for Basic HTTP authentication, any other authentication scheme cannot be done preemptively because it requires a more complex and secure challenge response process.

            }
            return new FormsAuthenticator(logins);
        } else {
            // Do we want preemptive authentication?
            if (this.isTrue(props, PARAM_PREEMPTIVE_AUTH)) {
                return new PreemptiveBasicAuthenticator(new SimpleAuthenticator(user, password.toCharArray()));
            } else {
                // Use simple authenticator
                return new SimpleAuthenticator(user, password.toCharArray());
            }
        }

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        QueryEngineHTTP qe = (QueryEngineHTTP) QueryExecutionFactory.sparqlService(serviceQuery, "ASK { }");


        // Auth credentials for valid user with correct password using
        // pre-emptive auth
        ScopedAuthenticator authenticator = new ScopedAuthenticator(new URI(serviceQuery), "allowed", "password".toCharArray());
        qe.setAuthenticator(new PreemptiveBasicAuthenticator(authenticator));
        Assert.assertTrue(qe.execAsk());
    }

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        // Auth credentials for valid user with correct password scoped to
        // correct URI
        // Also using pre-emptive auth
        ScopedAuthenticator authenticator = new ScopedAuthenticator(new URI(serviceUpdate), "allowed", "password".toCharArray());
        ue.setAuthenticator(new PreemptiveBasicAuthenticator(authenticator));
        ue.execute();
    }

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            {
                boolean preemptive = Boolean.parseBoolean(getServletContext().getInitParameter(GS.preemptiveAuth.getURI()).toString());
                if (preemptive)
                {
                    if (log.isDebugEnabled()) log.debug("Creating PreemptiveBasicAuthenticator for Context {} with username: {} ", serviceContext, usr);
                    return new PreemptiveBasicAuthenticator(new SimpleAuthenticator(usr, pwd.toCharArray()));
                }
            }


            if (log.isDebugEnabled()) log.debug("Creating SimpleAuthenticator for Context {} with username: {} ", serviceContext, usr);
            return new SimpleAuthenticator(usr, pwd.toCharArray());

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        QueryEngineHTTP qe = (QueryEngineHTTP) QueryExecutionFactory.sparqlService(serviceQuery, "ASK { }");


        // Auth credentials for valid user with correct password using
        // pre-emptive auth
        ScopedAuthenticator authenticator = new ScopedAuthenticator(new URI(serviceQuery), "allowed", "password".toCharArray());
        qe.setAuthenticator(new PreemptiveBasicAuthenticator(authenticator));
        Assert.assertTrue(qe.execAsk());
    }

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        // Auth credentials for valid user with correct password scoped to
        // correct URI
        // Also using pre-emptive auth
        ScopedAuthenticator authenticator = new ScopedAuthenticator(new URI(serviceUpdate), "allowed", "password".toCharArray());
        ue.setAuthenticator(new PreemptiveBasicAuthenticator(authenticator));
        ue.execute();
    }

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Related Classes of org.apache.jena.atlas.web.auth.PreemptiveBasicAuthenticator

org.apache.http.client.AuthCache

org.apache.http.HttpHost

org.apache.http.impl.auth.BasicScheme

org.apache.http.impl.client.BasicAuthCache

org.apache.jena.fuseki.TestAuth

org.apache.jena.jdbc.remote.RemoteEndpointDriver

org.graphity.server.util.DataManager

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Examples of org.apache.jena.atlas.web.auth.PreemptiveBasicAuthenticator

Security Concerns

Standard vs Proxy Authentication

Related Classes of org.apache.jena.atlas.web.auth.PreemptiveBasicAuthenticator