Fixed wrong method call

Renamed method to keep consistency

README.textile

@@ -20,10 +20,12 @@ h3. Threadsafe
 
 Hit Scribe as hard and with many threads as you like.
 
-h3. Supports all major OAuth APIs out-of-the-box
+h3. Supports all major 1.0a and 2.0 OAuth APIs out-of-the-box
 
 * Google
 
+* Facebook
+
 * Yahoo
 
 * LinkedIn
@@ -32,6 +34,12 @@ h3. Supports all major OAuth APIs out-of-the-box
 
 * Foursquare
 
+* Evernote
+
+* Vimeo
+
+* Yammer
+
 * and many more! check the "examples folder":http://github.com/fernandezpablo85/scribe-java/tree/master/src/test/java/org/scribe/examples
 
 h3. Small and modular
@@ -55,7 +63,7 @@ You can pull scribe from a maven repository, just add this to your __pom.xml__ f
 @<dependency>@
   @<groupId>org.scribe</groupId>@
   @<artifactId>scribe</artifactId>@
-  @<version>1.0.6</version>@
+  @<version>1.1.0</version>@
 @</dependency>@
 
 h1. Getting started in less than 2 minutes

changelog.txt

@@ -18,3 +18,16 @@
 
  * FEATURE: Token made Serializable
  * FIX: Google Api encoding issues (thanks @roger and @klakegg)
+
+[1.1.0]
+
+  * FEATURE: OAuth 2.0 Support and Facebook support out of the box (thanks Diego Silveira)
+  * REFACTOR: Api creation and OAuthService refactors
+  * REFACTOR: Connections are created lazily (just before sending the request)
+
+[1.1.1]
+
+  * FIX: Removed isEmpty() from OAuth2.0 code in order to support older JVMs
+  * FEATURE: Overloaded provider() method to support instances as well as classes (thanks dustismo)
+  * FIX: White-space parameter bug (thanks Krogoth)
+  * FEATURE: OAuth 2.0 now implements server-flow (thanks Diego Silveira)

pom.xml

@@ -4,7 +4,7 @@
   <groupId>org.scribe</groupId>
   <artifactId>scribe</artifactId>
   <packaging>jar</packaging>
-  <version>1.0.9</version>
+  <version>1.1.1</version>
   <name>Scribe OAuth Library</name>
   <description>The best OAuth library out there</description>
   <url>http://github.com/fernandezpablo85/scribe-java</url>
@@ -22,6 +22,12 @@
       <email>fernandezpablo85@gmail.com</email>
       <timezone>-3</timezone>
     </developer>
+    <developer>
+      <id>diegossilveira</id>
+      <name>Diego Silveira</name>
+      <email>diegossilveira@gmail.com</email>
+      <timezone>-3</timezone>
+    </developer>
   </developers>
 
   <licenses>

src/main/java/org/scribe/builder/ServiceBuilder.java

@@ -2,7 +2,6 @@ package org.scribe.builder;
 
 import org.scribe.builder.api.*;
 import org.scribe.exceptions.*;
-
 import org.scribe.model.*;
 import org.scribe.oauth.*;
 import org.scribe.utils.*;
@@ -56,7 +55,22 @@ public class ServiceBuilder
     }
     return api;
   }
-  
+
+  /**
+   * Configures the {@link Api}
+   *
+   * Overloaded version. Let's you use an instance instead of a class.
+   *
+   * @param api instance of {@link Api}s
+   * @return the {@link ServiceBuilder} instance for method chaining
+   */
+  public ServiceBuilder provider(Api api)
+  {
+	  Preconditions.checkNotNull(api, "Api cannot be null");
+	  this.api = api;
+	  return this;
+  }
+
   /**
    * Adds an OAuth callback url
    * 
@@ -119,6 +133,6 @@ public class ServiceBuilder
     Preconditions.checkNotNull(api, "You must specify a valid api through the provider() method");
     Preconditions.checkEmptyString(apiKey, "You must provide an api key");
     Preconditions.checkEmptyString(apiSecret, "You must provide an api secret");
-    return api.createService(apiKey, apiSecret, callback, scope);
+    return api.createService(new OAuthConfig(apiKey, apiSecret, callback), scope);
   }
 }

src/main/java/org/scribe/builder/api/Api.java

@@ -1,5 +1,6 @@
 package org.scribe.builder.api;
 
+import org.scribe.model.*;
 import org.scribe.oauth.*;
 
 /**
@@ -20,5 +21,5 @@ public interface Api
    * 
    * @return fully configured {@link OAuthService}
    */
-  OAuthService createService(String apiKey, String apiSecret, String callback, String scope);
+  OAuthService createService(OAuthConfig config, String scope);
 }

src/main/java/org/scribe/builder/api/DefaultApi10a.java

@@ -8,52 +8,97 @@ import org.scribe.services.*;
 /**
  * Default implementation of the OAuth protocol, version 1.0a
  * 
- * This class is meant to be extended by concrete implementations of the API.
+ * This class is meant to be extended by concrete implementations of the API,
+ * providing the endpoints and endpoint-http-verbs.
+ * 
  * If your Api adheres to the 1.0a protocol correctly, you just need to extend 
  * this class and define the getters for your endpoints.
  * 
+ * If your Api does something a bit different, you can override the different 
+ * extractors or services, in order to fine-tune the process. Please read the 
+ * javadocs of the interfaces to get an idea of what to do.
+ * 
  * @author Pablo Fernandez
  *
  */
 public abstract class DefaultApi10a implements Api
 {
-  
+  /**
-  protected AccessTokenExtractor getAccessTokenExtractor()
+   * Returns the access token extractor.
+   * 
+   * @return access token extractor
+   */
+  public AccessTokenExtractor getAccessTokenExtractor()
   {
     return new TokenExtractorImpl();
   }
 
-  protected BaseStringExtractor getBaseStringExtractor()
+  /**
+   * Returns the base string extractor.
+   * 
+   * @return base string extractor
+   */
+  public BaseStringExtractor getBaseStringExtractor()
   {
     return new BaseStringExtractorImpl();
   }
 
-  protected HeaderExtractor getHeaderExtractor()
+  /**
+   * Returns the header extractor.
+   * 
+   * @return header extractor
+   */
+  public HeaderExtractor getHeaderExtractor()
   {
     return new HeaderExtractorImpl();
   }
 
-  protected RequestTokenExtractor getRequestTokenExtractor()
+  /**
+   * Returns the request token extractor.
+   * 
+   * @return request token extractor
+   */
+  public RequestTokenExtractor getRequestTokenExtractor()
   {
     return new TokenExtractorImpl();
   }
 
-  protected SignatureService getSignatureService()
+  /**
+   * Returns the signature service.
+   * 
+   * @return signature service
+   */
+  public SignatureService getSignatureService()
   {
     return new HMACSha1SignatureService(); 
   }
 
-  protected TimestampService getTimestampService()
+  /**
+   * Returns the timestamp service.
+   * 
+   * @return timestamp service
+   */
+  public TimestampService getTimestampService()
   {
     return new TimestampServiceImpl();
   }
   
-  protected Verb getAccessTokenVerb()
+  /**
+   * Returns the verb for the access token endpoint (defaults to POST)
+   * 
+   * @return access token endpoint verb
+   */
+  public Verb getAccessTokenVerb()
   {
     return Verb.POST;
   }
   
-  protected Verb getRequestTokenVerb()
+  /**
+   * Returns the verb for the request token endpoint (defaults to POST)
+   * 
+   * @return request token endpoint verb
+   */
+  public Verb getRequestTokenVerb()
   {
     return Verb.POST;
   }
@@ -63,14 +108,23 @@ public abstract class DefaultApi10a implements Api
    * 
    * @return request token URL
    */
-  protected abstract String getRequestTokenEndpoint();
+  public abstract String getRequestTokenEndpoint();
   
   /**
    * Returns the URL that receives the access token requests.
    * 
    * @return access token URL
    */
-  protected abstract String getAccessTokenEndpoint();
+  public abstract String getAccessTokenEndpoint();
+  
+  /**
+   * Returns the URL where you should redirect your users to authenticate
+   * your application.
+   * 
+   * @param requestToken the request token you need to authorize
+   * @return the URL where you should redirect your users
+   */
+  public abstract String getAuthorizationUrl(Token requestToken);
   
   /**
    * Returns the {@link OAuthService} for this Api
@@ -80,35 +134,15 @@ public abstract class DefaultApi10a implements Api
    * @param callback OAuth callback (either URL or 'oob')
    * @param scope OAuth scope (optional) 
    */
-  public OAuthService createService(String apiKey, String apiSecret, String callback, String scope)
+  public OAuthService createService(OAuthConfig config, String scope)
   {
-    OAuthService service = createService(apiKey, apiSecret, callback);
+    OAuthService service = doCreateService(config);
     service.addScope(scope);
     return service;
   }
   
-  private OAuthService createService(String apiKey, String apiSecret, String callback)
+  private OAuthService doCreateService(OAuthConfig config)
   {
-    return new OAuth10aServiceImpl( getSignatureService(), 
+    return new OAuth10aServiceImpl(this, config);
-                                    getTimestampService(), 
-                                    getBaseStringExtractor(), 
-                                    getHeaderExtractor(), 
-                                    getRequestTokenExtractor(), 
-                                    getAccessTokenExtractor(), 
-                                    createConfig(apiKey, apiSecret, callback));
   }
-  
-  private OAuthConfig createConfig(String apiKey, String apiSecret, String callback)
-  {
-    OAuthConfig config = new OAuthConfig();
-    config.setRequestTokenVerb(getRequestTokenVerb());
-    config.setRequestTokenEndpoint(getRequestTokenEndpoint());
-    config.setAccessTokenVerb(getAccessTokenVerb());
-    config.setAccessTokenEndpoint(getAccessTokenEndpoint());
-    config.setApiKey(apiKey);
-    config.setApiSecret(apiSecret);
-    config.setCallback(callback);
-    return config;
-  }
-
 }

src/main/java/org/scribe/builder/api/DefaultApi20.java

@@ -0,0 +1,70 @@
+package org.scribe.builder.api;
+
+import org.scribe.extractors.*;
+import org.scribe.model.*;
+import org.scribe.oauth.*;
+
+/**
+ * Default implementation of the OAuth protocol, version 2.0 (draft 11)
+ *
+ * This class is meant to be extended by concrete implementations of the API,
+ * providing the endpoints and endpoint-http-verbs.
+ *
+ * If your Api adheres to the 2.0 (draft 11) protocol correctly, you just need to extend
+ * this class and define the getters for your endpoints.
+ *
+ * If your Api does something a bit different, you can override the different
+ * extractors or services, in order to fine-tune the process. Please read the
+ * javadocs of the interfaces to get an idea of what to do.
+ *
+ * @author Diego Silveira
+ *
+ */
+public abstract class DefaultApi20 implements Api
+{
+
+  /**
+   * Returns the access token extractor.
+   * 
+   * @return access token extractor
+   */
+  public AccessTokenExtractor getAccessTokenExtractor()
+  {
+    return new TokenExtractor20Impl();
+  }
+	
+  /**
+   * Returns the verb for the access token endpoint (defaults to GET)
+   * 
+   * @return access token endpoint verb
+   */
+  public Verb getAccessTokenVerb()
+  {
+    return Verb.GET;
+  }
+	
+  /**
+   * Returns the URL that receives the access token requests.
+   * 
+   * @return access token URL
+   */
+  public abstract String getAccessTokenEndpoint();
+	
+  /**
+   * Returns the URL where you should redirect your users to authenticate
+   * your application.
+   *
+   * @param config OAuth 2.0 configuration param object
+   * @return the URL where you should redirect your users
+   */
+  public abstract String getAuthorizationUrl(OAuthConfig config);
+
+  /**
+   * {@inheritDoc}
+   */
+  public OAuthService createService(OAuthConfig config, String scope)
+  {
+    return new OAuth20ServiceImpl(this, config);
+  }
+
+}

src/main/java/org/scribe/builder/api/EvernoteApi.java

@@ -1,11 +1,14 @@
 package org.scribe.builder.api;
 
+import org.scribe.model.Token;
 import org.scribe.model.Verb;
 
 public class EvernoteApi extends DefaultApi10a
 {
+  private static final String AUTHORIZATION_URL = "https://www.evernote.com/OAuth.action?oauth_token=%s";
+  
   @Override
-  protected Verb getRequestTokenVerb()
+  public Verb getRequestTokenVerb()
   {
     return Verb.GET;
   }
@@ -17,7 +20,7 @@ public class EvernoteApi extends DefaultApi10a
 	}
 
 	@Override
-	protected Verb getAccessTokenVerb()
+	public Verb getAccessTokenVerb()
 	{
 	  return Verb.GET;
 	}
@@ -27,4 +30,33 @@ public class EvernoteApi extends DefaultApi10a
 	{
 		return "https://www.evernote.com/oauth";
 	}
+	
+	@Override
+	public String getAuthorizationUrl(Token requestToken)
+	{
+	  return String.format(AUTHORIZATION_URL, requestToken.getToken());
+	}
+
+	public static class Sandbox extends EvernoteApi
+	{
+	  private static final String SANDBOX_URL = "https://sandbox.evernote.com/oauth";
+
+	  @Override
+	  public String getRequestTokenEndpoint()
+	  {
+	    return SANDBOX_URL;
+	  }
+
+	  @Override
+	  public String getAccessTokenEndpoint()
+	  {
+	    return SANDBOX_URL;
+	  }
+
+	  @Override
+	  public String getAuthorizationUrl(Token requestToken)
+	  {
+	    return String.format(SANDBOX_URL + "?oauth_token=%s", requestToken.getToken());
+	  }
+	}
 }

src/main/java/org/scribe/builder/api/FacebookApi.java

@@ -0,0 +1,22 @@
+package org.scribe.builder.api;
+
+import org.scribe.model.*;
+import org.scribe.utils.*;
+
+public class FacebookApi extends DefaultApi20
+{
+  private static final String AUTHORIZE_URL = "https://www.facebook.com/dialog/oauth?client_id=%s&redirect_uri=%s";
+
+  @Override
+  public String getAccessTokenEndpoint()
+  {
+    return "https://graph.facebook.com/oauth/access_token";
+  }
+  
+  @Override
+  public String getAuthorizationUrl(OAuthConfig config)
+  {
+    Preconditions.checkValidUrl(config.getCallback(), "Must provide a valid url as callback. Facebook does not support OOB");
+    return String.format(AUTHORIZE_URL, config.getApiKey(), URLUtils.formURLEncode(config.getCallback()));
+  }
+}

src/main/java/org/scribe/builder/api/FoursquareApi.java

@@ -1,16 +1,26 @@
 package org.scribe.builder.api;
 
+import org.scribe.model.Token;
+
 public class FoursquareApi extends DefaultApi10a
 {
+  private static final String AUTHORIZATION_URL = "http://foursquare.com/oauth/authorize?oauth_token=%s";
+  
   @Override
-  protected String getAccessTokenEndpoint()
+  public String getAccessTokenEndpoint()
   {
     return "http://foursquare.com/oauth/access_token";
   }
 
   @Override
-  protected String getRequestTokenEndpoint()
+  public String getRequestTokenEndpoint()
   {
     return "http://foursquare.com/oauth/request_token";
   }
+  
+  @Override
+  public String getAuthorizationUrl(Token requestToken)
+  {
+    return String.format(AUTHORIZATION_URL, requestToken.getToken());
+  }
 }

src/main/java/org/scribe/builder/api/GoogleApi.java

@@ -4,27 +4,35 @@ import org.scribe.model.*;
 
 public class GoogleApi extends DefaultApi10a
 {
+  private static final String AUTHORIZATION_URL = "https://www.google.com/accounts/OAuthAuthorizeToken?oauth_token=%s";
+  
   @Override
-  protected String getAccessTokenEndpoint()
+  public String getAccessTokenEndpoint()
   {
     return "https://www.google.com/accounts/OAuthGetAccessToken"; 
   }
 
   @Override
-  protected String getRequestTokenEndpoint()
+  public String getRequestTokenEndpoint()
   {
     return "https://www.google.com/accounts/OAuthGetRequestToken";
   }
 
   @Override
-  protected Verb getAccessTokenVerb()
+  public Verb getAccessTokenVerb()
   {
     return Verb.GET;
   }
 
   @Override
-  protected Verb getRequestTokenVerb()
+  public Verb getRequestTokenVerb()
   {
     return Verb.GET;
   }
+  
+  @Override
+  public String getAuthorizationUrl(Token requestToken)
+  {
+    return String.format(AUTHORIZATION_URL, requestToken.getToken());
+  }
 }

src/main/java/org/scribe/builder/api/LinkedInApi.java

@@ -1,16 +1,27 @@
 package org.scribe.builder.api;
 
+import org.scribe.model.*;
+
 public class LinkedInApi extends DefaultApi10a
 {
+  private static final String AUTHORIZE_URL = "https://api.linkedin.com/uas/oauth/authorize?oauth_token=%s";
+
   @Override
-  protected String getAccessTokenEndpoint()
+  public String getAccessTokenEndpoint()
   {
     return "https://api.linkedin.com/uas/oauth/accessToken";
   }
 
   @Override
-  protected String getRequestTokenEndpoint()
+  public String getRequestTokenEndpoint()
   {
     return "https://api.linkedin.com/uas/oauth/requestToken";
   }
+  
+  @Override
+  public String getAuthorizationUrl(Token requestToken)
+  {
+    return String.format(AUTHORIZE_URL, requestToken.getToken());
+  }
+  
 }

src/main/java/org/scribe/builder/api/TwitterApi.java

@@ -1,16 +1,26 @@
 package org.scribe.builder.api;
 
+import org.scribe.model.Token;
+
 public class TwitterApi extends DefaultApi10a
 {
+  private static final String AUTHORIZE_URL = "https://api.twitter.com/oauth/authorize?oauth_token=%s";
+  
   @Override
-  protected String getAccessTokenEndpoint()
+  public String getAccessTokenEndpoint()
   {
     return "http://api.twitter.com/oauth/access_token";
   }
 
   @Override
-  protected String getRequestTokenEndpoint()
+  public String getRequestTokenEndpoint()
   {
     return "http://api.twitter.com/oauth/request_token";
   }
+  
+  @Override
+  public String getAuthorizationUrl(Token requestToken)
+  {
+    return String.format(AUTHORIZE_URL, requestToken.getToken());
+  }
 }

src/main/java/org/scribe/builder/api/VimeoApi.java

@@ -1,16 +1,26 @@
 package org.scribe.builder.api;
 
+import org.scribe.model.Token;
+
 public class VimeoApi extends DefaultApi10a
 {
+  private static final String AUTHORIZATION_URL = "http://vimeo.com/oauth/authorize?oauth_token=%s";
+  
   @Override
-  protected String getAccessTokenEndpoint()
+  public String getAccessTokenEndpoint()
   {
     return "http://vimeo.com/oauth/access_token";
   }
 
   @Override
-  protected String getRequestTokenEndpoint()
+  public String getRequestTokenEndpoint()
   {
     return "http://vimeo.com/oauth/request_token";
   }
+  
+  @Override
+  public String getAuthorizationUrl(Token requestToken)
+  {
+    return String.format(AUTHORIZATION_URL, requestToken.getToken());
+  }
 }

src/main/java/org/scribe/builder/api/YahooApi.java

@@ -1,16 +1,26 @@
 package org.scribe.builder.api;
 
+import org.scribe.model.Token;
+
 public class YahooApi extends DefaultApi10a
 {
+  private static final String AUTHORIZE_URL = "https://api.login.yahoo.com/oauth/v2/request_auth?oauth_token=%s";
+  
   @Override
-  protected String getAccessTokenEndpoint()
+  public String getAccessTokenEndpoint()
   {
     return "https://api.login.yahoo.com/oauth/v2/get_token";
   }
 
   @Override
-  protected String getRequestTokenEndpoint()
+  public String getRequestTokenEndpoint()
   {
     return "https://api.login.yahoo.com/oauth/v2/get_request_token";
   }
+  
+  @Override
+  public String getAuthorizationUrl(Token requestToken)
+  {
+    return String.format(AUTHORIZE_URL, requestToken.getToken());
+  }
 }

src/main/java/org/scribe/builder/api/YammerApi.java

@@ -1,7 +1,10 @@
 package org.scribe.builder.api;
 
+import org.scribe.model.Token;
+
 public class YammerApi extends DefaultApi10a
 {
+  private static final String AUTHORIZATION_URL = "'https://www.yammer.com/oauth/authorize?oauth_token=%s'";
 
 	@Override
 	public String getRequestTokenEndpoint()
@@ -14,5 +17,10 @@ public class YammerApi extends DefaultApi10a
   {
 		return "https://www.yammer.com/oauth/access_token";
 	}
-
+	
+	@Override
+	public String getAuthorizationUrl(Token requestToken)
+	{
+	  return String.format(AUTHORIZATION_URL, requestToken.getToken());
+	}
 }

src/main/java/org/scribe/extractors/BaseStringExtractorImpl.java

@@ -32,11 +32,11 @@ public class BaseStringExtractorImpl implements BaseStringExtractor
   private String getSortedAndEncodedParams(OAuthRequest request)
   {
     Map<String, String> params = new HashMap<String, String>();
-    params.putAll(request.getQueryStringParams());
+    MapUtils.decodeAndAppendEntries(request.getQueryStringParams(), params);
-    params.putAll(request.getBodyParams());
+    MapUtils.decodeAndAppendEntries(request.getBodyParams(), params);
-    params.putAll(request.getOauthParameters());
+    MapUtils.decodeAndAppendEntries(request.getOauthParameters(), params);
     params = MapUtils.sort(params);
-    return URLUtils.percentEncode(URLUtils.formURLEncodeMap(params));
+    return URLUtils.percentEncode(URLUtils.concatSortedPercentEncodedParams(params));
   }
 
   private void checkPreconditions(OAuthRequest request)

src/main/java/org/scribe/extractors/TokenExtractor20Impl.java

@@ -0,0 +1,36 @@
+package org.scribe.extractors;
+
+import java.util.regex.*;
+
+import org.scribe.exceptions.*;
+import org.scribe.model.*;
+import org.scribe.utils.*;
+
+/**
+ * Default implementation of {@AccessTokenExtractor}. Conforms to OAuth 2.0
+ *
+ */
+public class TokenExtractor20Impl implements AccessTokenExtractor
+{
+  private static final String TOKEN_REGEX = "access_token=(\\S*?)(&(\\S*))?";
+  private static final String EMPTY_SECRET = "";
+
+  /**
+   * {@inheritDoc} 
+   */
+  public Token extract(String response)
+  {
+    Preconditions.checkEmptyString(response, "Response body is incorrect. Can't extract a token from an empty string");
+
+    Matcher matcher = Pattern.compile(TOKEN_REGEX).matcher(response);
+    if (matcher.matches())
+    {
+      String token = URLUtils.formURLDecode(matcher.group(1));
+      return new Token(token, EMPTY_SECRET);
+    } 
+    else
+    {
+      throw new OAuthException("Response body is incorrect. Can't extract a token from this: '" + response + "'", null);
+    }
+  }
+}

src/main/java/org/scribe/extractors/TokenExtractorImpl.java

@@ -27,10 +27,11 @@ public class TokenExtractorImpl implements RequestTokenExtractor, AccessTokenExt
     Matcher matcher = Pattern.compile(TOKEN_REGEX).matcher(response);
     if (matcher.matches())
     {
-      String token = URLUtils.percentDecode(matcher.group(1));
+      String token = URLUtils.formURLDecode(matcher.group(1));
-      String secret = URLUtils.percentDecode(matcher.group(2));
+      String secret = URLUtils.formURLDecode(matcher.group(2));
       return new Token(token, secret);
-    } else
+    }
+    else
     {
       throw new OAuthException("Response body is incorrect. Can't extract a token from this: '" + response + "'", null);
     }

src/main/java/org/scribe/model/OAuthConfig.java

@@ -10,10 +10,18 @@ public class OAuthConfig
   private String apiKey;
   private String apiSecret;
   private String callback;
-  private String requestTokenEndpoint;
+  
-  private String accessTokenEndpoint;
+  public OAuthConfig(String key, String secret)
-  private Verb requestTokenVerb;
+  {
-  private Verb accessTokenVerb;
+    this(key,secret,null);
+  }
+  
+  public OAuthConfig(String key, String secret, String callback)
+  {
+    this.apiKey = key;
+    this.apiSecret = secret;
+    this.callback = callback;
+  }
 
   public String getApiKey()
   {
@@ -44,45 +52,4 @@ public class OAuthConfig
   {
     this.callback = callback;
   }
-
-  public String getRequestTokenEndpoint()
-  {
-    return requestTokenEndpoint;
-  }
-
-  public void setRequestTokenEndpoint(String requestTokenEndpoint)
-  {
-    this.requestTokenEndpoint = requestTokenEndpoint;
-  }
-
-  public String getAccessTokenEndpoint()
-  {
-    return accessTokenEndpoint;
-  }
-
-  public void setAccessTokenEndpoint(String accessTokenEndpoint)
-  {
-    this.accessTokenEndpoint = accessTokenEndpoint;
-  }
-
-  public Verb getRequestTokenVerb()
-  {
-    return requestTokenVerb != null ? requestTokenVerb : Verb.GET;
-  }
-
-  public void setRequestTokenVerb(Verb requestTokenVerb)
-  {
-    this.requestTokenVerb = requestTokenVerb;
-  }
-
-  public Verb getAccessTokenVerb()
-  {
-    return accessTokenVerb != null ? accessTokenVerb : Verb.GET;
-  }
-
-  public void setAccessTokenVerb(Verb accessTokenVerb)
-  {
-    this.accessTokenVerb = accessTokenVerb;
-  }
-
 }

src/main/java/org/scribe/model/OAuthConstants.java

@@ -38,4 +38,12 @@ public class OAuthConstants
   public static final String HEADER = "Authorization";
   public static final Token EMPTY_TOKEN = new Token("", "");
   public static final String SCOPE = "scope";
+
+  //OAuth 2.0
+  public static final String ACCESS_TOKEN = "access_token";
+  public static final String CLIENT_ID = "client_id";
+  public static final String CLIENT_SECRET = "client_secret";
+  public static final String REDIRECT_URI = "redirect_uri";
+  public static final String CODE = "code";
+  
 }

src/main/java/org/scribe/model/Request.java

@@ -19,6 +19,7 @@ class Request
 
   private String url;
   private Verb verb;
+  private Map<String, String> querystringParams;
   private Map<String, String> bodyParams;
   private Map<String, String> headers;
   private String payload = null;
@@ -34,15 +35,9 @@ class Request
   {
     this.verb = verb;
     this.url = url;
+    this.querystringParams = new HashMap<String, String>();
     this.bodyParams = new HashMap<String, String>();
     this.headers = new HashMap<String, String>();
-    try
-    {
-      connection = (HttpURLConnection) new URL(url).openConnection();
-    } catch (IOException ioe)
-    {
-      throw new OAuthException("Could not open connection to: " + url, ioe);
-    }
   }
 
   /**
@@ -56,6 +51,7 @@ class Request
   {
     try
     {
+      createConnection();
       return doSend();
     } catch (IOException ioe)
     {
@@ -63,6 +59,15 @@ class Request
     }
   }
 
+  private void createConnection() throws IOException
+  {
+    String effectiveUrl = URLUtils.appendParametersToQueryString(url, querystringParams);
+    if (connection == null)
+    {
+      connection = (HttpURLConnection) new URL(effectiveUrl).openConnection();
+    }
+  }
+
   Response doSend() throws IOException
   {
     connection.setRequestMethod(this.verb.name());
@@ -109,6 +114,17 @@ class Request
     this.bodyParams.put(key, value);
   }
 
+  /**
+   * Add a QueryString parameter
+   *
+   * @param key the parameter name
+   * @param value the parameter value
+   */
+  public void addQuerystringParameter(String key, String value)
+  {
+    this.querystringParams.put(key, value);
+  }
+
   /**
    * Add body payload.
    * 
@@ -128,23 +144,19 @@ class Request
    * Get a {@link Map} of the query string parameters.
    * 
    * @return a map containing the query string parameters
+   * @throws OAuthException if the URL is not valid
    */
   public Map<String, String> getQueryStringParams()
   {
     try
     {
       Map<String, String> params = new HashMap<String, String>();
-      String query = new URL(url).getQuery();
+      String queryString = new URL(url).getQuery();
-      if (query != null)
+      params.putAll(URLUtils.queryStringToMap(queryString));
-      {
+      params.putAll(this.querystringParams);
-        for (String param : query.split("&"))
-        {
-          String pair[] = param.split("=");
-          params.put(pair[0], pair[1]);
-        }
-      }
       return params;
-    } catch (MalformedURLException mue)
+    }
+    catch (MalformedURLException mue)
     {
       throw new OAuthException("Malformed URL", mue);
     }

src/main/java/org/scribe/model/Verifier.java

@@ -19,7 +19,8 @@ public class Verifier
    */
   public Verifier(String value)
   {
-    this.value = URLUtils.percentDecode(value);
+    Preconditions.checkNotNull(value, "Must provide a valid string as verifier");
+    this.value = value;
   }
 
   public String getValue()

src/main/java/org/scribe/oauth/OAuth10aServiceImpl.java

@@ -1,8 +1,7 @@
 package org.scribe.oauth;
 
-import org.scribe.extractors.*;
+import org.scribe.builder.api.*;
 import org.scribe.model.*;
-import org.scribe.services.*;
 
 /**
  * OAuth 1.0a implementation of {@link OAuthService}
@@ -15,34 +14,18 @@ public class OAuth10aServiceImpl implements OAuthService
   private static final String VERSION = "1.0";
 
   private OAuthConfig config;
-  private SignatureService signatureService;
+  private DefaultApi10a api;
-  private TimestampService timestampService;
-  private BaseStringExtractor baseStringExtractor;
-  private HeaderExtractor headerExtractor;
-  private RequestTokenExtractor rtExtractor;
-  private AccessTokenExtractor atExtractor;
   private String scope;
 
   /**
    * Default constructor
    * 
-   * @param signatureService OAuth 1.0a signature service
+   * @param api OAuth1.0a api information
-   * @param timestampService OAuth 1.0a timestamp service
-   * @param baseStringExtractor OAuth 1.0a base string extractor
-   * @param headerExtractor OAuth 1.0a http header extractor
-   * @param rtExtractor OAuth 1.0a request token extractor
-   * @param atExtractor OAuth 1.0a access token extractor
    * @param config OAuth 1.0a configuration param object
    */
-  public OAuth10aServiceImpl(SignatureService signatureService, TimestampService timestampService, BaseStringExtractor baseStringExtractor,
+  public OAuth10aServiceImpl(DefaultApi10a api, OAuthConfig config)
-      HeaderExtractor headerExtractor, RequestTokenExtractor rtExtractor, AccessTokenExtractor atExtractor, OAuthConfig config)
   {
-    this.signatureService = signatureService;
+    this.api = api;
-    this.timestampService = timestampService;
-    this.baseStringExtractor = baseStringExtractor;
-    this.headerExtractor = headerExtractor;
-    this.rtExtractor = rtExtractor;
-    this.atExtractor = atExtractor;
     this.config = config;
     this.scope = NO_SCOPE;
   }
@@ -52,22 +35,22 @@ public class OAuth10aServiceImpl implements OAuthService
    */
   public Token getRequestToken()
   {
-    OAuthRequest request = new OAuthRequest(config.getRequestTokenVerb(), config.getRequestTokenEndpoint());
+    OAuthRequest request = new OAuthRequest(api.getRequestTokenVerb(), api.getRequestTokenEndpoint());
-    request.addOAuthParameter(OAuthConstants.CALLBACK, config.getCallback());
-    if(scope != NO_SCOPE) request.addOAuthParameter(OAuthConstants.SCOPE, scope);
     addOAuthParams(request, OAuthConstants.EMPTY_TOKEN);
+    request.addOAuthParameter(OAuthConstants.CALLBACK, config.getCallback());
     addOAuthHeader(request);
     Response response = request.send();
-    return rtExtractor.extract(response.getBody());
+    return api.getRequestTokenExtractor().extract(response.getBody());
   }
 
   private void addOAuthParams(OAuthRequest request, Token token)
   {
-    request.addOAuthParameter(OAuthConstants.TIMESTAMP, timestampService.getTimestampInSeconds());
+    request.addOAuthParameter(OAuthConstants.TIMESTAMP, api.getTimestampService().getTimestampInSeconds());
-    request.addOAuthParameter(OAuthConstants.NONCE, timestampService.getNonce());
+    request.addOAuthParameter(OAuthConstants.NONCE, api.getTimestampService().getNonce());
     request.addOAuthParameter(OAuthConstants.CONSUMER_KEY, config.getApiKey());
-    request.addOAuthParameter(OAuthConstants.SIGN_METHOD, signatureService.getSignatureMethod());
+    request.addOAuthParameter(OAuthConstants.SIGN_METHOD, api.getSignatureService().getSignatureMethod());
     request.addOAuthParameter(OAuthConstants.VERSION, getVersion());
+    if(scope != NO_SCOPE) request.addOAuthParameter(OAuthConstants.SCOPE, scope);
     request.addOAuthParameter(OAuthConstants.SIGNATURE, getSignature(request, token));
   }
 
@@ -76,13 +59,13 @@ public class OAuth10aServiceImpl implements OAuthService
    */
   public Token getAccessToken(Token requestToken, Verifier verifier)
   {
-    OAuthRequest request = new OAuthRequest(config.getAccessTokenVerb(), config.getAccessTokenEndpoint());
+    OAuthRequest request = new OAuthRequest(api.getAccessTokenVerb(), api.getAccessTokenEndpoint());
     request.addOAuthParameter(OAuthConstants.TOKEN, requestToken.getToken());
     request.addOAuthParameter(OAuthConstants.VERIFIER, verifier.getValue());
     addOAuthParams(request, requestToken);
     addOAuthHeader(request);
     Response response = request.send();
-    return atExtractor.extract(response.getBody());
+    return api.getAccessTokenExtractor().extract(response.getBody());
   }
 
   /**
@@ -110,16 +93,24 @@ public class OAuth10aServiceImpl implements OAuthService
   {
     this.scope = scope;
   }
+
+  /**
+   * {@inheritDoc}
+   */
+  public String getAuthorizationUrl(Token requestToken)
+  {
+    return api.getAuthorizationUrl(requestToken);
+  }
   
   private String getSignature(OAuthRequest request, Token token)
   {
-    String baseString = baseStringExtractor.extract(request);
+    String baseString = api.getBaseStringExtractor().extract(request);
-    return signatureService.getSignature(baseString, config.getApiSecret(), token.getSecret());
+    return api.getSignatureService().getSignature(baseString, config.getApiSecret(), token.getSecret());
   }
 
   private void addOAuthHeader(OAuthRequest request)
   {
-    String oauthHeader = headerExtractor.extract(request);
+    String oauthHeader = api.getHeaderExtractor().extract(request);
     request.addHeader(OAuthConstants.HEADER, oauthHeader);
   }
 }

src/main/java/org/scribe/oauth/OAuth20ServiceImpl.java

@@ -0,0 +1,79 @@
+package org.scribe.oauth;
+
+import org.scribe.builder.api.*;
+import org.scribe.model.*;
+
+public class OAuth20ServiceImpl implements OAuthService
+{
+  private static final String VERSION = "2.0";
+  
+  private final DefaultApi20 api;
+  private final OAuthConfig config;
+  
+  /**
+   * Default constructor
+   * 
+   * @param api OAuth2.0 api information
+   * @param config OAuth 2.0 configuration param object
+   */
+  public OAuth20ServiceImpl(DefaultApi20 api, OAuthConfig config)
+  {
+    this.api = api;
+    this.config = config;
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  public void addScope(String scope)
+  {
+    throw new UnsupportedOperationException("OAuth 2 does not use scopes");
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  public Token getAccessToken(Token requestToken, Verifier verifier)
+  {
+    OAuthRequest request = new OAuthRequest(api.getAccessTokenVerb(), api.getAccessTokenEndpoint());
+    request.addQuerystringParameter(OAuthConstants.CLIENT_ID, config.getApiKey());
+    request.addQuerystringParameter(OAuthConstants.CLIENT_SECRET, config.getApiSecret());
+    request.addQuerystringParameter(OAuthConstants.CODE, verifier.getValue());
+    request.addQuerystringParameter(OAuthConstants.REDIRECT_URI, config.getCallback());
+    Response response = request.send();
+    return api.getAccessTokenExtractor().extract(response.getBody());
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  public Token getRequestToken()
+  {
+    throw new UnsupportedOperationException("Unsupported operation, please use 'getAuthorizationUrl' and redirect your users there");
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  public String getVersion()
+  {
+    return VERSION;
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  public void signRequest(Token accessToken, OAuthRequest request)
+  {
+    request.addQuerystringParameter(OAuthConstants.ACCESS_TOKEN, accessToken.getToken());
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  public String getAuthorizationUrl(Token requestToken)
+  {
+    return api.getAuthorizationUrl(config);
+  }
+
+}

src/main/java/org/scribe/oauth/OAuthService.java

@@ -48,4 +48,13 @@ public interface OAuthService
    * @param scope OAuth Api scope (optional)
    */
   public void addScope(String scope);
+  
+  /**
+   * Returns the URL where you should redirect your users to authenticate
+   * your application.
+   * 
+   * @param requestToken the request token you need to authorize
+   * @return the URL where you should redirect your users
+   */
+  public String getAuthorizationUrl(Token requestToken);
 }

src/main/java/org/scribe/utils/MapUtils.java

@@ -33,4 +33,19 @@ public class MapUtils
     Collections.sort(keys);
     return keys;
   }
+
+  /**
+   * Form-urlDecodes and appends all keys from the source {@link Map} to the
+   * target {@link Map}
+   *
+   * @param source Map from where the keys get copied and decoded
+   * @param target Map where the decoded keys are copied to
+   */
+  public static void decodeAndAppendEntries(Map<String, String> source, Map<String, String> target)
+  {
+    for (String key: source.keySet())
+    {
+      target.put(URLUtils.percentEncode(key), URLUtils.percentEncode(source.get(key)));
+    }
+  }
 }

src/main/java/org/scribe/utils/StreamUtils.java

@@ -36,7 +36,7 @@ public class StreamUtils
       return out.toString();
     } catch (IOException ioe)
     {
-      throw new RuntimeException("Error while reading response body", ioe);
+      throw new IllegalStateException("Error while reading response body", ioe);
     }
   }
 }

src/main/java/org/scribe/utils/URLUtils.java

@@ -4,19 +4,18 @@ import java.io.*;
 import java.net.*;
 import java.util.*;
 
-import org.scribe.exceptions.*;
-
 /**
- * Utils to deal with URL and url-encodings 
+ * Utils to deal with URL and url-encodings
- * 
+ *
  * @author Pablo Fernandez
  */
 public class URLUtils
 {
   private static final String EMPTY_STRING = "";
   private static final String UTF_8 = "UTF-8";
-  private static final char PAIR_SEPARATOR = '=';
+  private static final String PAIR_SEPARATOR = "=";
-  private static final char PARAM_SEPARATOR = '&';
+  private static final String PARAM_SEPARATOR = "&";
+  private static final char QUERY_STRING_SEPARATOR = '?';
 
   private static final String ERROR_MSG = String.format("Cannot find specified encoding: %s", UTF_8);
 
@@ -32,7 +31,7 @@ public class URLUtils
   }
 
   /**
-   * Turns a map into a form-url-encoded string (key=value&key2=value2)
+   * Turns a map into a form-urlencoded string
    * 
    * @param map any map
    * @return form-url-encoded string
@@ -48,46 +47,57 @@ public class URLUtils
     StringBuffer encodedString = new StringBuffer(map.size() * 20);
     for (String key : map.keySet())
     {
-      if(encodedString.length() > 0) 
+      encodedString.append(PARAM_SEPARATOR).append(formURLEncode(key));
+      if(map.get(key) != null)
       {
-        encodedString.append(PARAM_SEPARATOR);
+        encodedString.append(PAIR_SEPARATOR).append(formURLEncode(map.get(key)));
       }
-      encodedString.append(percentEncode(key)).append(PAIR_SEPARATOR).append(percentEncode(map.get(key)));
     }
-    return encodedString.toString();
+    return encodedString.toString().substring(1);
   }
 
   /**
    * Percent encodes a string
    * 
-   * @param plain
+   * @param string plain string
    * @return percent encoded string
    */
   public static String percentEncode(String string)
+  {
+    String encoded = formURLEncode(string);
+    for (EncodingRule rule : ENCODING_RULES)
+    {
+      encoded = rule.apply(encoded);
+    }
+    return encoded;
+  }
+
+  /**
+   * Translates a string into application/x-www-form-urlencoded format
+   *
+   * @param plain
+   * @return form-urlencoded string
+   */
+  public static String formURLEncode(String string)
   {
     Preconditions.checkNotNull(string, "Cannot encode null string");
     try
     {
-      String encoded = URLEncoder.encode(string, UTF_8);
+      return URLEncoder.encode(string, UTF_8);
-      for(EncodingRule rule : ENCODING_RULES)
-      {
-        encoded = rule.apply(encoded);
-      }
-      return encoded;
     } 
     catch (UnsupportedEncodingException uee)
     {
-      throw new OAuthException(ERROR_MSG, uee);
+      throw new IllegalStateException(ERROR_MSG, uee);
     }
   }
 
   /**
-   * Percent decodes a string
+   * Decodes a application/x-www-form-urlencoded string
    * 
-   * @param string percent encoded string
+   * @param string form-urlencoded string
    * @return plain string
    */
-  public static String percentDecode(String string)
+  public static String formURLDecode(String string)
   {
     Preconditions.checkNotNull(string, "Cannot decode null string");
     try
@@ -96,10 +106,74 @@ public class URLUtils
     }
     catch (UnsupportedEncodingException uee)
     {
-      throw new OAuthException(ERROR_MSG, uee);
+      throw new IllegalStateException(ERROR_MSG, uee);
     }
   }
 
+  /**
+   * Append given parameters to the query string of the url
+   *
+   * @param url the url to append parameters to
+   * @param params any map
+   * @return new url with parameters on query string
+   */
+  public static String appendParametersToQueryString(String url, Map<String, String> params)
+  {
+    Preconditions.checkNotNull(url, "Cannot append to null URL");
+    String queryString = URLUtils.formURLEncodeMap(params);
+    if (queryString.equals(EMPTY_STRING))
+    {
+      return url;
+    }
+    else
+    {
+      url += url.indexOf(QUERY_STRING_SEPARATOR) != -1 ? PARAM_SEPARATOR : QUERY_STRING_SEPARATOR;
+      url += queryString;
+      return url;
+    }
+  }
+
+  /**
+   * Concats a key-value map into a querystring-like String
+   *
+   * @param params key-value map
+   * @return querystring-like String
+   */
+  // TODO Move to MapUtils
+  public static String concatSortedPercentEncodedParams(Map<String, String> params)
+  {
+    StringBuilder result = new StringBuilder();
+    for (String key : params.keySet())
+    {
+      result.append(key).append(PAIR_SEPARATOR);
+      result.append(params.get(key)).append(PARAM_SEPARATOR);
+    }
+    return result.toString().substring(0, result.length() - 1);
+  }
+
+  /**
+   * Parses and form-urldecodes a querystring-like string into a map
+   *
+   * @param queryString querystring-like String
+   * @return a map with the form-urldecoded parameters
+   */
+  // TODO Move to MapUtils
+  public static Map<String, String> queryStringToMap(String queryString)
+  {
+    Map<String, String> result = new HashMap<String, String>();
+    if (queryString != null && queryString.length() > 0)
+    {
+      for (String param : queryString.split(PARAM_SEPARATOR))
+      {
+        String pair[] = param.split(PAIR_SEPARATOR);
+        String key = formURLDecode(pair[0]);
+        String value = pair.length > 1 ? formURLDecode(pair[1]) : EMPTY_STRING;
+        result.put(key, value);
+      }
+    }
+    return result;
+  }
+
   private static final class EncodingRule
   {
     private final String ch;

src/test/java/org/scribe/builder/ServiceBuilderTest.java

@@ -0,0 +1,66 @@
+package org.scribe.builder;
+
+import static org.junit.Assert.*;
+
+import org.junit.*;
+import org.scribe.builder.api.*;
+import org.scribe.model.*;
+import org.scribe.oauth.*;
+
+public class ServiceBuilderTest
+{
+  private ServiceBuilder builder;
+
+  @Before
+  public void setup()
+  {
+    builder = new ServiceBuilder();
+  }
+
+  @Test
+  public void shouldReturnOOBasDefaultCallback()
+  {
+    builder.provider(ApiMock.class).apiKey("key").apiSecret("secret").build();
+    assertEquals(ApiMock.config.getApiKey(), "key");
+    assertEquals(ApiMock.config.getApiSecret(), "secret");
+    assertEquals(ApiMock.config.getCallback(), OAuthConstants.OUT_OF_BAND);
+  }
+
+  @Test
+  public void shouldAcceptValidCallbackUrl()
+  {
+    builder.provider(ApiMock.class).apiKey("key").apiSecret("secret").callback("http://example.com").build();
+    assertEquals(ApiMock.config.getApiKey(), "key");
+    assertEquals(ApiMock.config.getApiSecret(), "secret");
+    assertEquals(ApiMock.config.getCallback(), "http://example.com");
+  }
+
+  @Test(expected=IllegalArgumentException.class)
+  public void shouldNotAcceptAnInvalidUrlAsCallback()
+  {
+    builder.provider(ApiMock.class).apiKey("key").apiSecret("secret").callback("example.com").build(); 
+  }
+
+  @Test
+  public void shouldAcceptAnScope()
+  {
+    builder.provider(ApiMock.class).apiKey("key").apiSecret("secret").scope("rss-api").build();
+    assertEquals(ApiMock.config.getApiKey(), "key");
+    assertEquals(ApiMock.config.getApiSecret(), "secret");
+    assertEquals(ApiMock.scope, "rss-api");
+  }
+
+  public static class ApiMock implements Api
+  {
+    public static OAuthConfig config;
+    public static String scope;
+    
+    @Override
+    public OAuthService createService(OAuthConfig config, String scope)
+    {
+      ApiMock.config = config;
+      ApiMock.scope = scope;
+      return null;
+    }
+  }
+}

src/test/java/org/scribe/examples/FacebookExample.java

@@ -0,0 +1,64 @@
+package org.scribe.examples;
+
+import java.util.*;
+
+import org.scribe.builder.*;
+import org.scribe.builder.api.*;
+import org.scribe.model.*;
+import org.scribe.oauth.*;
+
+public class FacebookExample
+{
+  private static final String NETWORK_NAME = "Facebook";
+  private static final String PROTECTED_RESOURCE_URL = "https://graph.facebook.com/me";
+  private static final Token EMPTY_TOKEN = null;
+
+  public static void main(String[] args)
+  {
+    // Replace these with your own api key and secret
+    String apiKey = "your_app_id";
+    String apiSecret = "your_api_secret";
+    OAuthService service = new ServiceBuilder()
+                                  .provider(FacebookApi.class)
+                                  .apiKey(apiKey)
+                                  .apiSecret(apiSecret)
+                                  .callback("http://www.example.com/oauth_callback/")
+                                  .build();
+    Scanner in = new Scanner(System.in);
+
+    System.out.println("=== " + NETWORK_NAME + "'s OAuth Workflow ===");
+    System.out.println();
+
+    // Obtain the Authorization URL
+    System.out.println("Fetching the Authorization URL...");
+    String authorizationUrl = service.getAuthorizationUrl(EMPTY_TOKEN);
+    System.out.println("Got the Authorization URL!");
+    System.out.println("Now go and authorize Scribe here:");
+    System.out.println(authorizationUrl);
+    System.out.println("And paste the authorization code here");
+    System.out.print(">>");
+    Verifier verifier = new Verifier(in.nextLine());
+    System.out.println();
+    
+    // Trade the Request Token and Verfier for the Access Token
+    System.out.println("Trading the Request Token for an Access Token...");
+    Token accessToken = service.getAccessToken(EMPTY_TOKEN, verifier);
+    System.out.println("Got the Access Token!");
+    System.out.println("(if your curious it looks like this: " + accessToken + " )");
+    System.out.println();
+
+    // Now let's go and ask for a protected resource!
+    System.out.println("Now we're going to access a protected resource...");
+    OAuthRequest request = new OAuthRequest(Verb.GET, PROTECTED_RESOURCE_URL);
+    service.signRequest(accessToken, request);
+    Response response = request.send();
+    System.out.println("Got it! Lets see what we found...");
+    System.out.println();
+    System.out.println(response.getCode());
+    System.out.println(response.getBody());
+
+    System.out.println();
+    System.out.println("Thats it man! Go and build something awesome with Scribe! :)");
+
+  }
+}

src/test/java/org/scribe/examples/FoursquareExample.java

@@ -9,7 +9,6 @@ import org.scribe.oauth.*;
 
 public class FoursquareExample
 {
-  private static final String AUTHORIZE_URL = "http://foursquare.com/oauth/authorize?oauth_token=";
   private static final String PROTECTED_RESOURCE_URL = "http://api.foursquare.com/v1/user";
   
   public static void main(String[] args)
@@ -31,7 +30,7 @@ public class FoursquareExample
     System.out.println();
 
     System.out.println("Now go and authorize Scribe here:");
-    System.out.println(AUTHORIZE_URL + requestToken.getToken());
+    System.out.println(service.getAuthorizationUrl(requestToken));
     System.out.println("And paste the verifier here");
     System.out.print(">>");
     Verifier verifier = new Verifier(in.nextLine());

src/test/java/org/scribe/examples/LinkedInExample.java

@@ -9,18 +9,17 @@ import org.scribe.oauth.*;
 
 public class LinkedInExample
 {
-  private static final String AUTHORIZE_URL = "https://api.linkedin.com/uas/oauth/authorize?oauth_token=";
   private static final String PROTECTED_RESOURCE_URL = "http://api.linkedin.com/v1/people/~/connections:(id,last-name)";
   
   public static void main(String[] args)
   {
     OAuthService service = new ServiceBuilder()
-                                  .provider(LinkedInApi.class)
+                                .provider(LinkedInApi.class)
-                                  .apiKey("CiEgwWDkA5BFpNrc0RfGyVuSlOh4tig5kOTZ9q97qcXNrFl7zqk-Ts7DqRGaKDCV")
+                                .apiKey("CiEgwWDkA5BFpNrc0RfGyVuSlOh4tig5kOTZ9q97qcXNrFl7zqk-Ts7DqRGaKDCV")
-                                  .apiSecret("dhho4dfoCmiQXrkw4yslork5XWLFnPSuMR-8gscPVjY4jqFFHPYWJKgpFl4uLTM6")
+                                .apiSecret("dhho4dfoCmiQXrkw4yslork5XWLFnPSuMR-8gscPVjY4jqFFHPYWJKgpFl4uLTM6")
-                                  .build();
+                                .build();
-    
     Scanner in = new Scanner(System.in);
+    
     System.out.println("=== LinkedIn's OAuth Workflow ===");
     System.out.println();
 
@@ -31,7 +30,7 @@ public class LinkedInExample
     System.out.println();
 
     System.out.println("Now go and authorize Scribe here:");
-    System.out.println(AUTHORIZE_URL + requestToken.getToken());
+    System.out.println(service.getAuthorizationUrl(requestToken));
     System.out.println("And paste the verifier here");
     System.out.print(">>");
     Verifier verifier = new Verifier(in.nextLine());

src/test/java/org/scribe/examples/TwitterExample.java

@@ -9,7 +9,6 @@ import org.scribe.oauth.*;
 
 public class TwitterExample
 {
-  private static final String AUTHORIZE_URL = "https://api.twitter.com/oauth/authorize?oauth_token=";
   private static final String PROTECTED_RESOURCE_URL = "http://api.twitter.com/1/account/verify_credentials.xml";
   
   public static void main(String[] args)
@@ -31,7 +30,7 @@ public class TwitterExample
     System.out.println();
 
     System.out.println("Now go and authorize Scribe here:");
-    System.out.println(AUTHORIZE_URL + requestToken.getToken());
+    System.out.println(service.getAuthorizationUrl(requestToken));
     System.out.println("And paste the verifier here");
     System.out.print(">>");
     Verifier verifier = new Verifier(in.nextLine());

src/test/java/org/scribe/examples/YahooExample.java

@@ -9,20 +9,18 @@ import org.scribe.oauth.*;
 
 public class YahooExample
 {
-  private static final String NETWORK_NAME = "Yahoo";
-  private static final String AUTHORIZE_URL = "https://api.login.yahoo.com/oauth/v2/request_auth?oauth_token=";
   private static final String PROTECTED_RESOURCE_URL = "http://social.yahooapis.com/v1/user/A6ROU63MXWDCW3Y5MGCYWVHDJI/profile/status?format=json";
 
   public static void main(String[] args)
   {
     OAuthService service = new ServiceBuilder()
-                                  .provider(YahooApi.class)
+                                .provider(YahooApi.class)
-                                  .apiKey("dj0yJmk9TXZDWVpNVVdGaVFmJmQ9WVdrOWMweHZXbkZLTkhVbWNHbzlNVEl5TWprd05qUTJNZy0tJnM9Y29uc3VtZXJzZWNyZXQmeD0wMw--")
+                                .apiKey("dj0yJmk9TXZDWVpNVVdGaVFmJmQ9WVdrOWMweHZXbkZLTkhVbWNHbzlNVEl5TWprd05qUTJNZy0tJnM9Y29uc3VtZXJzZWNyZXQmeD0wMw--")
-                                  .apiSecret("262be559f92a2be20c4c039419018f2b48cdfce9")
+                                .apiSecret("262be559f92a2be20c4c039419018f2b48cdfce9")
-                                  .build();
+                                .build();
     Scanner in = new Scanner(System.in);
 
-    System.out.println("=== " + NETWORK_NAME + "'s OAuth Workflow ===");
+    System.out.println("=== Yahoo's OAuth Workflow ===");
     System.out.println();
 
     // Obtain the Request Token
@@ -32,7 +30,7 @@ public class YahooExample
     System.out.println();
 
     System.out.println("Now go and authorize Scribe here:");
-    System.out.println(AUTHORIZE_URL + requestToken.getToken());
+    System.out.println(service.getAuthorizationUrl(requestToken));
     System.out.println("And paste the verifier here");
     System.out.print(">>");
     Verifier verifier = new Verifier(in.nextLine());

src/test/java/org/scribe/extractors/TokenExtractor20Test.java

@@ -0,0 +1,58 @@
+package org.scribe.extractors;
+
+import static org.junit.Assert.*;
+
+import org.junit.*;
+import org.scribe.exceptions.*;
+import org.scribe.model.*;
+
+public class TokenExtractor20Test
+{
+
+  private TokenExtractor20Impl extractor;
+
+  @Before
+  public void setup()
+  {
+    extractor = new TokenExtractor20Impl();
+  }
+
+  @Test
+  public void shouldExtractTokenFromOAuthStandardResponse()
+  {
+    String response = "access_token=166942940015970|2.2ltzWXYNDjCtg5ZDVVJJeg__.3600.1295816400-548517159|RsXNdKrpxg8L6QNLWcs2TVTmcaE";
+    Token extracted = extractor.extract(response);
+    assertEquals("166942940015970|2.2ltzWXYNDjCtg5ZDVVJJeg__.3600.1295816400-548517159|RsXNdKrpxg8L6QNLWcs2TVTmcaE", extracted.getToken());
+    assertEquals("", extracted.getSecret());
+  }
+
+  @Test
+  public void shouldExtractTokenFromResponseWithExpiresParam()
+  {
+    String response = "access_token=166942940015970|2.2ltzWXYNDjCtg5ZDVVJJeg__.3600.1295816400-548517159|RsXNdKrpxg8L6QNLWcs2TVTmcaE&expires=5108";
+    Token extracted = extractor.extract(response);
+    assertEquals("166942940015970|2.2ltzWXYNDjCtg5ZDVVJJeg__.3600.1295816400-548517159|RsXNdKrpxg8L6QNLWcs2TVTmcaE", extracted.getToken());
+    assertEquals("", extracted.getSecret());
+  }
+
+  @Test(expected = OAuthException.class)
+  public void shouldThrowExceptionIfTokenIsAbsent()
+  {
+    String response = "&expires=5108";
+    extractor.extract(response);
+  }
+
+  @Test(expected = IllegalArgumentException.class)
+  public void shouldThrowExceptionIfResponseIsNull()
+  {
+    String response = null;
+    extractor.extract(response);
+  }
+
+  @Test(expected = IllegalArgumentException.class)
+  public void shouldThrowExceptionIfResponseIsEmptyString()
+  {
+    String response = "";
+    extractor.extract(response);
+  }
+}

src/test/java/org/scribe/model/OAuthConfigTest.java

@@ -10,22 +10,17 @@ public class OAuthConfigTest
   @Test
   public void shouldReturnDefaultValuesIfNotSet()
   {
-    OAuthConfig config = new OAuthConfig();
+    OAuthConfig config = new OAuthConfig("key", "secret");
-    assertEquals(Verb.GET, config.getAccessTokenVerb());
-    assertEquals(Verb.GET, config.getRequestTokenVerb());
     assertEquals(OAuthConstants.OUT_OF_BAND, config.getCallback());
   }
 
   @Test
   public void shouldOverrideDefaultsIfSet()
   {
-    OAuthConfig config = new OAuthConfig();
+    OAuthConfig config = new OAuthConfig("key", "secret", "http://callback");
-    config.setCallback("http://callback");
-    config.setAccessTokenVerb(Verb.POST);
-    config.setRequestTokenVerb(Verb.POST);
     assertEquals("http://callback", config.getCallback());
-    assertEquals(Verb.POST, config.getAccessTokenVerb());
+    assertEquals("key", config.getApiKey());
-    assertEquals(Verb.POST, config.getRequestTokenVerb());
+    assertEquals("secret", config.getApiSecret());
   }
 
 }

src/test/java/org/scribe/model/RequestTest.java

@@ -16,8 +16,10 @@ public class RequestTest
   {
     connection = new ConnectionStub();
     postRequest = new Request(Verb.POST, "http://example.com");
+    postRequest.addBodyParameter("param", "value");
+    postRequest.addBodyParameter("param with spaces", "value with spaces");
     postRequest.setConnection(connection);
-    getRequest = new Request(Verb.GET, "http://example.com?qsparam=value&other=value+with+spaces");
+    getRequest = new Request(Verb.GET, "http://example.com?qsparam=value&other+param=value+with+spaces");
     getRequest.setConnection(connection);
   }
 
@@ -34,6 +36,7 @@ public class RequestTest
     assertEquals(2, getRequest.getQueryStringParams().size());
     assertEquals(0, postRequest.getQueryStringParams().size());
     assertTrue(getRequest.getQueryStringParams().containsKey("qsparam"));
+    assertTrue(getRequest.getQueryStringParams().get("qsparam").equals("value"));
   }
 
   @Test
@@ -47,12 +50,10 @@ public class RequestTest
   }
 
   @Test
-  public void shouldSetBodyParamsAndHeaders()
+  public void shouldSetBodyParamsAndAddContentLength()
   {
-    postRequest.addBodyParameter("param", "value");
+    assertEquals("param=value&param+with+spaces=value+with+spaces", postRequest.getBodyContents());
-    postRequest.addBodyParameter("param two", "value with spaces");
     postRequest.send();
-    assertEquals("param%20two=value%20with%20spaces&param=value", postRequest.getBodyContents());
     assertTrue(connection.getHeaders().containsKey("Content-Length"));
   }
 
@@ -65,4 +66,18 @@ public class RequestTest
     assertTrue(connection.getHeaders().containsKey("Content-Length"));
   }
 
+  @Test
+  public void shouldAllowAddingQuerystringParametersAfterCreation()
+  {
+    Request request = new Request(Verb.GET, "http://example.com?one=val");
+    request.addQuerystringParameter("two", "other val");
+    request.addQuerystringParameter("more", "params");
+    assertEquals(3, request.getQueryStringParams().size());
+  }
+
+  @Test
+  public void shouldHandleQueryStringSpaceEncodingProperly()
+  {
+    assertTrue(getRequest.getQueryStringParams().get("other param").equals("value with spaces"));
+  }
 }

src/test/java/org/scribe/model/VerifierTest.java

@@ -1,21 +0,0 @@
-package org.scribe.model;
-
-import static org.junit.Assert.*;
-
-import org.junit.*;
-
-public class VerifierTest
-{
-  @Test
-  public void shouldParse()
-  {
-    Verifier verifier = new Verifier("p8k%2BGIjIL9PblXq%2BpH6LmT9l");
-    assertEquals(verifier.getValue(), "p8k+GIjIL9PblXq+pH6LmT9l");
-  }
-
-  @Test(expected = IllegalArgumentException.class)
-  public void shouldThrowErrorForNullString()
-  {
-    new Verifier(null);
-  }
-}

src/test/java/org/scribe/utils/URLUtilsTest.java

@@ -16,7 +16,7 @@ public class URLUtilsTest
     params.put("key with spaces", "value with spaces");
     params.put("&symbols!", "#!");
 
-    String expected = "key=value&key%20with%20spaces=value%20with%20spaces&%26symbols%21=%23%21";
+    String expected = "key=value&key+with+spaces=value+with+spaces&%26symbols%21=%23%21";
     assertEquals(expected, URLUtils.formURLEncodeMap(params));
   }
 
@@ -28,6 +28,17 @@ public class URLUtilsTest
     assertEquals(expected, URLUtils.formURLEncodeMap(params));
   }
 
+  @Test
+  public void shouldFormURLEncodeMapWithMissingValues()
+  {
+    Map<String, String> params = new LinkedHashMap<String, String>();
+    params.put("key", "value");
+    params.put("key with spaces", null);
+
+    String expected = "key=value&key+with+spaces";
+    assertEquals(expected, URLUtils.formURLEncodeMap(params));
+  }
+
   @Test
   public void shouldPercentEncodeString()
   {
@@ -37,24 +48,32 @@ public class URLUtilsTest
   }
 
   @Test
-  public void shouldPercentDecodeString()
+  public void shouldFormURLEncodeString()
   {
-    String toDecode = "this+is+a+test+%26%5E";
+    String toEncode = "this is a test &^";
-    String expected = "this is a test &^";
+    String expected = "this+is+a+test+%26%5E";
-    assertEquals(expected, URLUtils.percentDecode(toDecode));
+    assertEquals(expected, URLUtils.formURLEncode(toEncode));
   }
 
   @Test
-  public void shouldEncodeAllSpecialCharacters()
+  public void shouldFormURLDecodeString()
+  {
+    String toDecode = "this+is+a+test+%26%5E";
+    String expected = "this is a test &^";
+    assertEquals(expected, URLUtils.formURLDecode(toDecode));
+  }
+
+  @Test
+  public void shouldPercentEncodeAllSpecialCharacters()
   {
     String plain = "!*'();:@&=+$,/?#[]";
     String encoded = "%21%2A%27%28%29%3B%3A%40%26%3D%2B%24%2C%2F%3F%23%5B%5D";
     assertEquals(encoded, URLUtils.percentEncode(plain));
-    assertEquals(plain, URLUtils.percentDecode(encoded));
+    assertEquals(plain, URLUtils.formURLDecode(encoded));
   }
 
   @Test
-  public void shouldNotEncodeReservedCharacters()
+  public void shouldNotPercentEncodeReservedCharacters()
   {
     String plain = "abcde123456-._~";
     String encoded = plain;
@@ -79,7 +98,69 @@ public class URLUtilsTest
   public void shouldThrowExceptionIfStringToDecodeIsNull()
   {
     String toDecode = null;
-    URLUtils.percentDecode(toDecode);
+    URLUtils.formURLDecode(toDecode);
   }
 
+  @Test(expected = IllegalArgumentException.class)
+  public void shouldThrowExceptionWhenAppendingNullMapToQuerystring()
+  {
+    String url = "http://www.example.com";
+    Map<String, String> nullMap = null;
+    URLUtils.appendParametersToQueryString(url, nullMap);
+  }
+
+  @Test
+  public void shouldAppendNothingToQuerystringIfGivenEmptyMap()
+  {
+    String url = "http://www.example.com";
+    Map<String, String> emptyMap = new HashMap<String, String>();
+    String newUrl = URLUtils.appendParametersToQueryString(url, emptyMap);
+    Assert.assertEquals(url, newUrl);
+  }
+
+  @Test
+  public void shouldAppendParametersToSimpleUrl()
+  {
+    String url = "http://www.example.com";
+    String expectedUrl = "http://www.example.com?param1=value1&param2=value+with+spaces";
+
+    Map<String, String> params = new HashMap<String, String>();
+    params.put("param1", "value1");
+    params.put("param2", "value with spaces");
+
+    url = URLUtils.appendParametersToQueryString(url, params);
+    Assert.assertEquals(url, expectedUrl);
+  }
+
+  @Test
+  public void shouldAppendParametersToUrlWithQuerystring()
+  {
+    String url = "http://www.example.com?already=present";
+    String expectedUrl = "http://www.example.com?already=present&param1=value1&param2=value+with+spaces";
+
+    Map<String, String> params = new HashMap<String, String>();
+    params.put("param1", "value1");
+    params.put("param2", "value with spaces");
+
+    url = URLUtils.appendParametersToQueryString(url, params);
+    Assert.assertEquals(url, expectedUrl);
+  }
+
+  @Test
+  public void shouldPercentEncodePlusSymbol()
+  {
+    String plain = "7aEP+jNAwvjc0mjhqg0nuXPf";
+    String encoded = "7aEP%2BjNAwvjc0mjhqg0nuXPf";
+
+    Assert.assertEquals(encoded, URLUtils.percentEncode(plain));
+  }
+
+  @Test
+  public void shouldURLDecodePlusSymbol()
+  {
+    String encoded = "oauth_verifier=7aEP%2BjNAwvjc0mjhqg0nuXPf";
+    String expected = "oauth_verifier=7aEP+jNAwvjc0mjhqg0nuXPf";
+
+    Assert.assertEquals(expected, URLUtils.formURLDecode(encoded));
+  }
 }