CAS: Sample Client for Java

As the client for Java is missing at the jasig homepage I'll provide my solution here. Of course it has the "Domain" addition that I described in my earlier posts, but it is simple and quite obvious how to remove it.

So, here it is:

package cas;

import java.io.IOException;
import java.util.logging.Logger;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.methods.PostMethod;

public final class Client {
private static final Logger LOG = Logger.getLogger(Client.class.getName());

private Client() {
// static-only access
}

public static String getTicket(final String server, final String domain, final String username,
final String password, final String service) {
notNull(server, "server must not be null");
notNull(domain, "domain must not be null");
notNull(username, "username must not be null");
notNull(password, "password must not be null");
notNull(service, "service must not be null");

return getServiceTicket(server, getTicketGrantingTicket(server, domain, username, password), service);
}

private static String getServiceTicket(final String server, final String ticketGrantingTicket, final String service) {
if (ticketGrantingTicket == null)
return null;
final HttpClient client = new HttpClient();
final PostMethod post = new PostMethod(server + "/" + ticketGrantingTicket);
post.setRequestBody(new NameValuePair[] { new NameValuePair("service", service) });
try {
client.executeMethod(post);
final String response = post.getResponseBodyAsString();
switch (post.getStatusCode()) {
case 200:
return response;
default:
LOG.warning("Invalid response code (" + post.getStatusCode() + ") from CAS server!");
LOG.info("Response (1k): " + response.substring(0, Math.min(1024, response.length())));
break;
}
}
catch (final IOException e) {
LOG.warning(e.getMessage());
}
finally {
post.releaseConnection();
}
return null;
}

private static String getTicketGrantingTicket(final String server, final String domain, final String username,
final String password) {
final HttpClient client = new HttpClient();
final PostMethod post = new PostMethod(server);
post.setRequestBody(new NameValuePair[] { new NameValuePair("domain", domain),
new NameValuePair("username", username), new NameValuePair("password", password) });
try {
client.executeMethod(post);
final String response = post.getResponseBodyAsString();
switch (post.getStatusCode()) {
case 201: {
final Matcher matcher = Pattern.compile(".*action=\".*/(.*?)\".*").matcher(response);

if (matcher.matches())
return matcher.group(1);

LOG.warning("Successful ticket granting request, but no ticket found!");
LOG.info("Response (1k): " + response.substring(0, Math.min(1024, response.length())));
break;
}
default:
LOG.warning("Invalid response code (" + post.getStatusCode() + ") from CAS server!");
LOG.info("Response (1k): " + response.substring(0, Math.min(1024, response.length())));
break;
}
}
catch (final IOException e) {
LOG.warning(e.getMessage());
}
finally {
post.releaseConnection();
}
return null;
}

private static void notNull(final Object object, final String message) {
if (object == null)
throw new IllegalArgumentException(message);
}

public static void main(final String[] args) {
final String server = "https://login.myServer.org/v1/tickets";
final String domain = "www.myserver.org";
final String username = "JohnDoe";
final String password = "mySecret";

final String service = "https://www.myServiceServer.org/";

LOG.info(getTicket(server, domain, username, password, service));
}
}

btw: I have implemented the same procedure for iOS and put it on GitHub

Install CocoaPods on OSX-Mavericks (DP8)

Today I tried to upgrade CocoaPods in order to prepare my APPs to the upcoming changes in iOS7. Unfortunately I got an error

ERROR:  Error installing cocoapods:

ERROR: Failed to build gem native extension.

    /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb

I'm currently using "xCode5 GM" which is using the "OSX 10.8 SDK" which apparently is delivered without ruby version 2.0.

The solution was to download "xCode5 DP6" (containing the SDK 10.9), switch the command line tools to the version supplied by this release ("xcode-select") and run the following commands as a shell script

sys_rb_usr=/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr

sdk_rb_usr=`xcode-select -p`/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr

sudo cp -r $sdk_rb_usr/include $sys_rb_usr/include

And then update CocoaPods.