Add location selection

14 files changed, 463 insertions, 35 deletions

diff --git a/pom.xml b/pom.xml
index f4c361f..559638e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,6 +1,6 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0"
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+		 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<groupId>de.bwlehrpool</groupId>
@@ -26,6 +26,77 @@
 					<target>1.7</target>
 				</configuration>
 			</plugin>
+
+			<!-- Pre-cache Angular templates with maven-angular-plugin -->
+			<plugin>
+				<groupId>com.keithbranton.mojo</groupId>
+				<artifactId>angular-maven-plugin</artifactId>
+				<version>0.3.2</version>
+				<executions>
+					<execution>
+						<phase>generate-resources</phase>
+						<goals>
+							<goal>html2js</goal>
+						</goals>
+					</execution>
+				</executions>
+				<configuration>
+					<sourceDir>${basedir}/src/main/resources</sourceDir>
+					<include>**/*.html</include>
+					<target>${basedir}/src/main/resources/generated/templates-main/templates.js</target>
+					<prefix>app/ext/bwlp</prefix>
+				</configuration>
+			</plugin>
+
+			<!-- JS/CSS Minification Plugin -->
+			<plugin>
+				<groupId>com.samaxes.maven</groupId>
+				<artifactId>minify-maven-plugin</artifactId>
+				<version>1.7.5</version>
+				<executions>
+					<execution>
+						<id>default-cli</id>
+						<configuration>
+							<charset>UTF-8</charset>
+
+							<webappSourceDir>${basedir}/src/main/resources</webappSourceDir>
+							<webappTargetDir>${project.build.directory}/classes</webappTargetDir>
+
+							<cssSourceDir>/</cssSourceDir>
+							<cssTargetDir>/</cssTargetDir>
+							<cssFinalFile>bwlp.css</cssFinalFile>
+
+							<cssSourceIncludes>
+								<cssSourceInclude>**/*.css</cssSourceInclude>
+							</cssSourceIncludes>
+
+							<jsSourceDir>/</jsSourceDir>
+							<jsTargetDir>/</jsTargetDir>
+							<jsFinalFile>bwlp.js</jsFinalFile>
+
+							<jsSourceIncludes>
+								<jsSourceInclude>**/*.js</jsSourceInclude>
+							</jsSourceIncludes>
+
+							<!-- Do not minify and include tests -->
+							<jsSourceExcludes>
+								<jsSourceExclude>**/*.test.js</jsSourceExclude>
+							</jsSourceExcludes>
+							<jsEngine>CLOSURE</jsEngine>
+
+							<!-- Disable warnings for JSDoc annotations -->
+							<closureWarningLevels>
+								<misplacedTypeAnnotation>OFF</misplacedTypeAnnotation>
+								<nonStandardJsDocs>OFF</nonStandardJsDocs>
+							</closureWarningLevels>
+
+						</configuration>
+						<goals>
+							<goal>minify</goal>
+						</goals>
+					</execution>
+				</executions>
+			</plugin>
 		</plugins>
 	</build>
 
@@ -41,6 +112,11 @@
 			<artifactId>guacamole-ext</artifactId>
 			<version>1.1.0</version>
 		</dependency>
-
+		<dependency>
+			<groupId>javax.servlet</groupId>
+			<artifactId>servlet-api</artifactId>
+			<version>2.5</version>
+			<scope>provided</scope>
+		</dependency>
 	</dependencies>
 </project>
diff --git a/src/main/java/de/bwlehrpool/bwlp_guac/AvailableClient.java b/src/main/java/de/bwlehrpool/bwlp_guac/AvailableClient.java
index c886397..e9144f8 100644
--- a/src/main/java/de/bwlehrpool/bwlp_guac/AvailableClient.java
+++ b/src/main/java/de/bwlehrpool/bwlp_guac/AvailableClient.java
@@ -1,6 +1,7 @@
 package de.bwlehrpool.bwlp_guac;
 
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.concurrent.atomic.AtomicLong;
 
 import org.apache.guacamole.protocol.GuacamoleConfiguration;
@@ -15,10 +16,14 @@ public class AvailableClient implements Cloneable {
 
 	private static final AtomicLong CON_ID = new AtomicLong();
 
+	public ArrayList<JsonLocation> locationList = new ArrayList<JsonLocation>();
+
 	private final String clientip;
 
 	private String password;
 
+	private int locationid;
+
 	private State state;
 
 	private String inUseBy;
@@ -35,6 +40,7 @@ public class AvailableClient implements Cloneable {
 
 	public AvailableClient(JsonClient source) {
 		this.clientip = source.clientip;
+		this.locationid = source.locationid;
 		update(source);
 	}
 	
@@ -110,6 +116,14 @@ public class AvailableClient implements Cloneable {
 		return clientip + "/" + state + "/" + inUseBy;
 	}
 
+	public State getState() {
+		return state;
+	}
+
+	public int getLocationid() {
+		return locationid;
+	}
+
 	public GuacamoleConfiguration toGuacConfig() {
 		GuacamoleConfiguration cfg = new GuacamoleConfiguration();
 		cfg.setProtocol("vnc");
diff --git a/src/main/java/de/bwlehrpool/bwlp_guac/BwlpAuthenticationProvider.java b/src/main/java/de/bwlehrpool/bwlp_guac/BwlpAuthenticationProvider.java
index 4ec4f48..b902621 100644
--- a/src/main/java/de/bwlehrpool/bwlp_guac/BwlpAuthenticationProvider.java
+++ b/src/main/java/de/bwlehrpool/bwlp_guac/BwlpAuthenticationProvider.java
@@ -1,16 +1,25 @@
 package de.bwlehrpool.bwlp_guac;
 
-import java.util.Collections;
-import java.util.Map;
-import java.util.WeakHashMap;
+import java.io.IOException;
+import java.util.*;
 
 import org.apache.guacamole.GuacamoleException;
-import org.apache.guacamole.net.auth.AuthenticatedUser;
-import org.apache.guacamole.net.auth.AuthenticationProvider;
-import org.apache.guacamole.net.auth.Credentials;
-import org.apache.guacamole.net.auth.UserContext;
+import org.apache.guacamole.form.TextField;
+import org.apache.guacamole.net.auth.*;
+import org.apache.guacamole.net.auth.credentials.GuacamoleCredentialsException;
+import org.apache.guacamole.net.auth.credentials.GuacamoleInvalidCredentialsException;
+import org.codehaus.jackson.JsonGenerationException;
+import org.codehaus.jackson.JsonNode;
+import org.codehaus.jackson.map.JsonMappingException;
+import org.codehaus.jackson.map.ObjectMapper;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import javax.servlet.http.HttpServletRequest;
+import javax.xml.soap.Text;
+
+import org.apache.guacamole.form.Field;
+import org.apache.guacamole.net.auth.credentials.GuacamoleInsufficientCredentialsException;
+import org.apache.guacamole.net.auth.credentials.CredentialsInfo;
 
 public class BwlpAuthenticationProvider implements AuthenticationProvider {
 
@@ -44,7 +53,7 @@ public class BwlpAuthenticationProvider implements AuthenticationProvider {
 	}
 
 	public UserContext updateUserContext(UserContext context, AuthenticatedUser authenticatedUser,
-			Credentials credentials) throws GuacamoleException {
+										 Credentials credentials) throws GuacamoleException {
 		LOGGER.warn("Ignoring updateUserContext called with " + context.toString());
 		return null;
 	}
@@ -52,13 +61,19 @@ public class BwlpAuthenticationProvider implements AuthenticationProvider {
 	public UserContext decorate(UserContext context, AuthenticatedUser authenticatedUser, Credentials credentials)
 			throws GuacamoleException {
 		String username = authenticatedUser.getCredentials().getUsername();
+
 		LOGGER.warn("decorate called for " + username);
 		BwlpUserContext user = oldMappings.get(username);
+
 		if (user != null)
 			return user;
+
+		int locationid = requestLocation(credentials);
+
 		LOGGER.warn("Doing the decoration");
-		user = new BwlpUserContext(authenticatedUser, context);
+		user = new BwlpUserContext(authenticatedUser, context, locationid);
 		oldMappings.put(username, user);
+
 		return user;
 	}
 
@@ -67,17 +82,74 @@ public class BwlpAuthenticationProvider implements AuthenticationProvider {
 
 	public UserContext redecorate(UserContext decorated, UserContext context, AuthenticatedUser authenticatedUser,
 			Credentials credentials) throws GuacamoleException {
+
 		String username = authenticatedUser.getCredentials().getUsername();
+
 		LOGGER.warn("REdecorate called for " + username);
 		BwlpUserContext user = oldMappings.get(username);
+
 		if (user != null && user.hasValidConnection())
 			return user;
+
+		int locationid = requestLocation(credentials);
+
 		LOGGER.warn("Doing the REdecoration");
-		user = new BwlpUserContext(authenticatedUser, context);
+		user = new BwlpUserContext(authenticatedUser, context, locationid);
 		oldMappings.put(username, user);
+
 		return user;
 	}
 
+
+	private int requestLocation(Credentials credentials) throws GuacamoleException {
+		// Request the user to select a location
+		ConnectionManager.updateList();
+		HttpServletRequest request = credentials.getRequest();
+		String locationJson = request.getParameter("location");
+
+		if (locationJson == null) {
+			throw new GuacamoleInsufficientCredentialsException(
+					"Select Location", new CredentialsInfo(
+					Collections.<Field>singletonList(new LocationField())
+			));
+		}
+
+		ObjectMapper mapper = new ObjectMapper();
+
+		String message = "Select a Location";
+
+		int selectedId = 0;
+		boolean tryAgain = false;
+		String password = "";
+		String correctPassword = null;
+		try {
+			JsonNode location = mapper.readTree(locationJson);
+			selectedId = Integer.parseInt(location.get("id").asText());
+			if (selectedId != 0) {
+				password = location.get("password").asText();
+				correctPassword = ConnectionManager.getLocationPool().get(selectedId).password;
+			}
+		} catch (Exception e) {
+			LOGGER.info("Error reading location");
+			LOGGER.info(e.toString());
+			tryAgain = true;
+		}
+
+		if (selectedId != 0 && correctPassword != null && !password.equals(correctPassword)) {
+			tryAgain = true;
+			message = "Wrong password!";
+		}
+
+		if (tryAgain) {
+			throw new GuacamoleCredentialsException(
+					message, new CredentialsInfo(
+					Collections.<Field>singletonList(new LocationField())
+			));
+		}
+
+		return selectedId;
+	}
+
 	public void shutdown() {
 	}
 
diff --git a/src/main/java/de/bwlehrpool/bwlp_guac/BwlpUserContext.java b/src/main/java/de/bwlehrpool/bwlp_guac/BwlpUserContext.java
index 9a6e5d7..05fa78f 100644
--- a/src/main/java/de/bwlehrpool/bwlp_guac/BwlpUserContext.java
+++ b/src/main/java/de/bwlehrpool/bwlp_guac/BwlpUserContext.java
@@ -8,6 +8,8 @@ import org.apache.guacamole.net.auth.Connection;
 import org.apache.guacamole.net.auth.Directory;
 import org.apache.guacamole.net.auth.User;
 import org.apache.guacamole.net.auth.UserContext;
+import org.apache.guacamole.net.auth.credentials.GuacamoleCredentialsException;
+import org.apache.guacamole.net.auth.credentials.GuacamoleInsufficientCredentialsException;
 import org.apache.guacamole.net.auth.permission.ObjectPermissionSet;
 import org.apache.guacamole.net.auth.simple.SimpleConnection;
 import org.apache.guacamole.net.auth.simple.SimpleDirectory;
@@ -29,6 +31,7 @@ public class BwlpUserContext extends AbstractUserContext {
 
 	private final AuthenticatedUser authUser;
 	private final UserContext originalContext;
+	private final Integer locationid;
 
 	/**
 	 * The Directory with access to all connections within the root group associated
@@ -36,15 +39,17 @@ public class BwlpUserContext extends AbstractUserContext {
 	 */
 	private Directory<Connection> connectionDirectory;
 
-	public BwlpUserContext(AuthenticatedUser authenticatedUser, UserContext context) {
+	public BwlpUserContext(AuthenticatedUser authenticatedUser, UserContext context, int locationid)
+			throws GuacamoleCredentialsException {
 		authUser = authenticatedUser;
 		originalContext = context;
+		this.locationid = locationid;
 		// OK
 		addConn();
 	}
 
-	private void addConn() {
-		WrappedConnection connection = ConnectionManager.getForUser(authUser.getCredentials().getUsername());
+	private void addConn() throws GuacamoleCredentialsException {
+		WrappedConnection connection = ConnectionManager.getForUser(authUser.getCredentials().getUsername(), locationid);
 		if (connection != null) {
 			connectionDirectory = new SimpleDirectory<Connection>(connection);
 		} else {
diff --git a/src/main/java/de/bwlehrpool/bwlp_guac/ConnectionManager.java b/src/main/java/de/bwlehrpool/bwlp_guac/ConnectionManager.java
index f1ad057..eacb347 100644
--- a/src/main/java/de/bwlehrpool/bwlp_guac/ConnectionManager.java
+++ b/src/main/java/de/bwlehrpool/bwlp_guac/ConnectionManager.java
@@ -10,8 +10,7 @@ import java.security.KeyManagementException;
 import java.security.NoSuchAlgorithmException;
 import java.security.cert.CertificateException;
 import java.security.cert.X509Certificate;
-import java.util.Iterator;
-import java.util.LinkedHashMap;
+import java.util.*;
 
 import javax.net.ssl.HostnameVerifier;
 import javax.net.ssl.HttpsURLConnection;
@@ -21,6 +20,10 @@ import javax.net.ssl.SSLSocketFactory;
 import javax.net.ssl.TrustManager;
 import javax.net.ssl.X509TrustManager;
 
+import org.apache.guacamole.form.Field;
+import org.apache.guacamole.net.auth.credentials.CredentialsInfo;
+import org.apache.guacamole.net.auth.credentials.GuacamoleCredentialsException;
+import org.apache.guacamole.net.auth.credentials.GuacamoleInsufficientCredentialsException;
 import org.codehaus.jackson.map.ObjectMapper;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -31,6 +34,7 @@ import org.slf4j.LoggerFactory;
  */
 public class ConnectionManager {
 
+
 	private static final Logger LOGGER = LoggerFactory.getLogger(ConnectionManager.class);
 
 	// TODO: Config
@@ -38,11 +42,16 @@ public class ConnectionManager {
 
 	private static final LinkedHashMap<String, AvailableClient> clientPool = new LinkedHashMap<String, AvailableClient>();
 
+	private static final LinkedHashMap<Integer, JsonLocation> locationPool = new LinkedHashMap<Integer, JsonLocation>();
+
+	public static LinkedHashMap<Integer, JsonLocation> getLocationPool() { return locationPool; }
+
 	/**
 	 * Pass plain user name, get existing connection (if any), or a fresh one
 	 * @param user (LDAP) user name
 	 */
-	public static WrappedConnection getForUser(String user) {
+	public static WrappedConnection getForUser(String user, int locationid)
+			throws GuacamoleCredentialsException {
 		if (SOURCE_URL == null) {
 			LOGGER.warn("Don't have a source URL for client machines!");
 			return null;
@@ -51,17 +60,35 @@ public class ConnectionManager {
 			updateList();
 			// Find existing/free client
 			AvailableClient freeClient;
-			for (;;) {
+			for (; ; ) {
 				freeClient = null;
 				synchronized (clientPool) {
-					for (AvailableClient ac : clientPool.values()) {
+					Collection<AvailableClient> clients;
+					if (locationid == 0) {
+						clients = new HashSet<AvailableClient>();
+						for (JsonLocation loc : locationPool.values()) {
+							if (!loc.hasPassword()) clients.addAll(loc.clientList);
+						}
+					} else {
+						JsonLocation location = locationPool.get(locationid);
+						if (location == null) {
+							// Request the user to select a location
+							throw new GuacamoleInsufficientCredentialsException(
+									"Select Location", new CredentialsInfo(
+									Collections.<Field>singletonList(new LocationField())
+							));
+						}
+						clients = location.clientList;
+					}
+
+					for (AvailableClient ac : clients) {
 						if (ac.isInUseBy(user)) {
 							freeClient = ac;
 							break;
 						}
 					}
 					if (freeClient == null) {
-						for (AvailableClient ac : clientPool.values()) {
+						for (AvailableClient ac : clients) {
 							if (ac.claim(user)) {
 								freeClient = ac;
 								break;
@@ -69,8 +96,13 @@ public class ConnectionManager {
 						}
 					}
 				}
-				if (freeClient == null)
-					return null; // TODO: No more clients available -- how to handle?
+				if (freeClient == null) {
+					// Request the user to select another location
+					throw new GuacamoleCredentialsException(
+							"No free client. Select another location.", new CredentialsInfo(
+							Collections.<Field>singletonList(new LocationField())
+					));
+				}
 				// Found free or existing client, check if connection is (still) possible
 				if (freeClient.checkConnection(0)) {
 					LOGGER.info("Establishing mapping for user " + user + " to " + freeClient);
@@ -79,6 +111,8 @@ public class ConnectionManager {
 				// Connection check failed - release and loop again
 				freeClient.releaseConnection(user);
 			}
+		} catch (GuacamoleCredentialsException e) {
+			throw e;
 		} catch (Exception e) {
 			LOGGER.warn("KACKE AM DAMPFEN", e);
 			return null;
@@ -91,7 +125,7 @@ public class ConnectionManager {
 	 * Fetch fresh client list from satellite server.
 	 * Cache for 15 seconds.
 	 */
-	private static synchronized void updateList() {
+	public static synchronized void updateList() {
 		long now = System.currentTimeMillis();
 		if (now < lastUpdate) {
 			lastUpdate = now;
@@ -139,23 +173,68 @@ public class ConnectionManager {
 			LOGGER.warn("Not updating local list");
 			return;
 		}
-		list = root.clients;
-		if (list == null) {
-			LOGGER.info("Client list null");
+
+
+		if (root.locations == null) {
+			LOGGER.info("Location list null");
 		}
-		if (root.locations != null) {
-			for (JsonLocation l : root.locations) {
-				LOGGER.info("Location " + l.name + " with pw " + l.password);
+		synchronized (locationPool) {
+			for (JsonLocation lnew : root.locations) {
+				JsonLocation existing = locationPool.get(lnew.id);
+				boolean redoClientMapping = false;
+				if (existing == null) {
+					locationPool.put(lnew.id, lnew);
+					existing = lnew;
+					redoClientMapping = true;
+				} else {
+					if (existing.locationids != lnew.locationids) redoClientMapping = true;
+					existing.locationids = lnew.locationids;
+					existing.name = lnew.name;
+					existing.password = lnew.password;
+				}
+				if (redoClientMapping) {
+					existing.clientList = new ArrayList<AvailableClient>();
+					for (AvailableClient client : clientPool.values()) {
+						int locationid = client.getLocationid();
+						for (int id : existing.locationids) {
+							if (id == locationid) {
+								existing.clientList.add(client);
+								break;
+							}
+						}
+					}
+				}
+				existing.checked = true;
+				LOGGER.info("Location " + lnew.name + " with pw " + lnew.password);
 			}
+			for (JsonLocation loc : locationPool.values()) {
+				if (loc.checked) loc.checked = false;
+				else locationPool.remove(loc.id);
+			}
+		}
+
+		if (root.clients == null) {
+			LOGGER.info("Client list null");
 		}
 		synchronized (clientPool) {
-			for (JsonClient cnew : list) {
+			for (JsonClient cnew : root.clients) {
 				if (cnew.password == null || cnew.clientip == null)
 					continue; // Invalid
 				AvailableClient existing = clientPool.get(cnew.clientip);
 				if (existing == null) {
 					// New client
-					clientPool.put(cnew.clientip, new AvailableClient(cnew));
+					AvailableClient newClient = new AvailableClient(cnew);
+					clientPool.put(cnew.clientip, newClient);
+
+					for (JsonLocation loc : locationPool.values()) {
+						for (int id : loc.locationids) {
+							if (id == cnew.locationid) {
+								loc.clientList.add(newClient);
+								newClient.locationList.add(loc);
+								break;
+							}
+						}
+					}
 					LOGGER.info("New client " + cnew.clientip);
 				} else {
 					existing.update(cnew);
@@ -166,6 +245,9 @@ public class ConnectionManager {
 				AvailableClient c = it.next();
 				if (c.isTimeout(NOW)) {
 					LOGGER.info("Removing client " + c + " from list");
+					for (JsonLocation loc : c.locationList) {
+						loc.clientList.remove(c);
+					}
 					it.remove();
 				}
 
diff --git a/src/main/java/de/bwlehrpool/bwlp_guac/JsonLocation.java b/src/main/java/de/bwlehrpool/bwlp_guac/JsonLocation.java
index 6bf9d1c..e6fc1b6 100644
--- a/src/main/java/de/bwlehrpool/bwlp_guac/JsonLocation.java
+++ b/src/main/java/de/bwlehrpool/bwlp_guac/JsonLocation.java
@@ -1,5 +1,10 @@
 package de.bwlehrpool.bwlp_guac;
 
+import org.codehaus.jackson.annotate.JsonIgnore;
+import org.codehaus.jackson.annotate.JsonProperty;
+
+import java.util.ArrayList;
+
 public class JsonLocation {
 
 	public int id;
@@ -7,7 +12,34 @@ public class JsonLocation {
 	public int[] locationids;
 	
 	public String name;
-	
+
 	public String password;
+
+	@JsonProperty("password")
+	public Boolean hasPassword() { return password != null; }
+
+	@JsonProperty("freeCount")
+	public int getFreeCount() {
+		int count = 0;
+		for (AvailableClient client : clientList) {
+			if (client.getState() == JsonClient.State.IDLE) count++;
+		}
+		return count;
+	}
+
+	@JsonProperty("offlineCount")
+	public int getOfflineCount() {
+		int count = 0;
+		for (AvailableClient client : clientList) {
+			if (client.getState() == JsonClient.State.OFFLINE || client.getState() == JsonClient.State.STANDBY) count++;
+		}
+		return count;
+	}
+
+	@JsonIgnore
+	public ArrayList<AvailableClient> clientList = new ArrayList<AvailableClient>();
+
+	@JsonIgnore
+	public boolean checked = false;
 	
 }
diff --git a/src/main/java/de/bwlehrpool/bwlp_guac/LocationField.java b/src/main/java/de/bwlehrpool/bwlp_guac/LocationField.java
new file mode 100644
index 0000000..5e0266d
--- /dev/null
+++ b/src/main/java/de/bwlehrpool/bwlp_guac/LocationField.java
@@ -0,0 +1,26 @@
+package de.bwlehrpool.bwlp_guac;
+
+import org.apache.guacamole.GuacamoleException;
+import org.apache.guacamole.form.Field;
+import org.codehaus.jackson.annotate.JsonProperty;
+import org.codehaus.jackson.map.ObjectMapper;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.util.Collection;
+
+/**
+ * Field which lets the user select a location.
+ */
+public class LocationField extends Field {
+
+    public LocationField() {
+        super("location", "LOCATION");
+    }
+
+    @JsonProperty("locations")
+    public Collection<JsonLocation> getLocations() throws GuacamoleException {
+        return ConnectionManager.getLocationPool().values();
+    }
+}
\ No newline at end of file
diff --git a/src/main/resources/bwlpModule.js b/src/main/resources/bwlpModule.js
new file mode 100644
index 0000000..c74580a
--- /dev/null
+++ b/src/main/resources/bwlpModule.js
@@ -0,0 +1,5 @@
+angular.module('location', [
+    'form'
+]);
+
+angular.module('index').requires.push('location');
\ No newline at end of file
diff --git a/src/main/resources/config/locationConfig.js b/src/main/resources/config/locationConfig.js
new file mode 100644
index 0000000..6074752
--- /dev/null
+++ b/src/main/resources/config/locationConfig.js
@@ -0,0 +1,11 @@
+angular.module('location').config(['formServiceProvider',
+    function locationConfig(formServiceProvider) {
+
+        // Define field for the TOTP code provided by the user
+        formServiceProvider.registerFieldType('LOCATION', {
+            module      : 'location',
+            controller  : 'locationFieldController',
+            templateUrl : 'app/ext/bwlp/templates/locationField.html'
+        });
+
+    }]);
\ No newline at end of file
diff --git a/src/main/resources/controllers/locationFieldController.js b/src/main/resources/controllers/locationFieldController.js
new file mode 100644
index 0000000..8117ed7
--- /dev/null
+++ b/src/main/resources/controllers/locationFieldController.js
@@ -0,0 +1,23 @@
+angular.module('location').controller('locationFieldController', ['$scope', '$window',
+    function locationFieldController($scope, $window) {
+
+    $scope.data = { id: 0, password: '' }
+
+    $scope.$watch('data', function(newValue) {
+        $scope.model = JSON.stringify(newValue);
+    }, true);
+
+    $scope.selectLocation = function selectLocation($event, id) {
+        if (angular.element($event.target).hasClass('bwlp-password-input')) return;
+        $scope.data.password = '';
+        if ($scope.data.id === id) {
+            $scope.data.id = 0;
+            angular.element('.selected-location').removeClass('selected-location');
+            return;
+        }
+        $scope.data.id = id;
+        angular.element('.selected-location').removeClass('selected-location');
+        angular.element($event.currentTarget).addClass('selected-location');
+    };
+
+}]);
\ No newline at end of file
diff --git a/src/main/resources/guac-manifest.json b/src/main/resources/guac-manifest.json
index ef3c431..e507183 100644
--- a/src/main/resources/guac-manifest.json
+++ b/src/main/resources/guac-manifest.json
@@ -3,5 +3,17 @@
     "name" : "bwLehrpool virtual pool",
     "namespace" : "de.bwlehrpool",
     "authProviders": ["de.bwlehrpool.bwlp_guac.BwlpAuthenticationProvider"],
-    "html" : [ "disclaimer.html" ]
+    "html" : [ "disclaimer.html" ],
+    "translations" : [
+        "translations/en.json"
+    ],
+    "js" : [
+        "bwlp.min.js"
+    ],
+    "css" : [
+        "bwlp.min.css"
+    ],
+    "resources" : {
+        "templates/locationField.html" : "text/html"
+    }
 }
diff --git a/src/main/resources/styles/locationField.css b/src/main/resources/styles/locationField.css
new file mode 100644
index 0000000..cec1466
--- /dev/null
+++ b/src/main/resources/styles/locationField.css
@@ -0,0 +1,47 @@
+.bwlp-location-container {
+    border: 2px solid #3d3d3d;
+    width: 100%;
+    border-spacing: 0;
+}
+
+.bwlp-location {
+    background-color: white;
+    cursor: pointer;
+}
+
+.bwlp-location > td {
+    padding: 14px;
+}
+
+.bwlp-location .bwlp-password {
+    padding: 4px 8px !important;
+    margin: -10px 0 !important;
+}
+
+.bwlp-location:hover {
+    filter: brightness(0.9);
+}
+
+.bwlp-location.selected-location {
+    background-color: #c8ffc8;
+}
+
+.bwlp-location-status {
+    font-size: 16px;
+    text-align: center;
+}
+
+.bwlp-password {
+    text-align: right;
+}
+
+.bwlp-password > span {
+    font-size: 16px;
+    opacity: 0.5;
+}
+
+.bwlp-password-input {
+    margin: 0 !important;
+    padding: 5px 8px !important;
+    background-color: white !important;
+}
\ No newline at end of file
diff --git a/src/main/resources/templates/locationField.html b/src/main/resources/templates/locationField.html
new file mode 100644
index 0000000..f76259e
--- /dev/null
+++ b/src/main/resources/templates/locationField.html
@@ -0,0 +1,18 @@
+<table class="bwlp-location-container">
+    <tr ng-repeat="location in field.locations" class="bwlp-location"
+         ng-click="selectLocation($event, location.id)">
+        <td>
+            {{ location.name }}
+        </td>
+        <td class="bwlp-location-status">
+            {{ location.freeCount }} available ({{ location.offlineCount }} offline)
+        </td>
+        <td style="width: 200px">
+            <div ng-if="location.password" class="bwlp-password">
+                <span ng-if="data.id !== location.id">Password protected</span>
+                <input ng-if="data.id === location.id" ng-model="data.password"
+                       type="password" placeholder="Password" class="bwlp-password-input" required>
+            </div>
+        </td>
+    </tr>
+</table>
diff --git a/src/main/resources/translations/en.json b/src/main/resources/translations/en.json
new file mode 100644
index 0000000..9ad430b
--- /dev/null
+++ b/src/main/resources/translations/en.json
@@ -0,0 +1,5 @@
+{
+    "LOGIN" : {
+        "FIELD_HEADER_LOCATION" : ""
+    }
+}
\ No newline at end of file