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Added support for Facebook login #26

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Merged
stianst merged 1 commit into from
Aug 13, 2013
Merged

Added support for Facebook login #26

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5 changes: 5 additions & 0 deletions examples/as7-eap-demo/server/pom.xml
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Expand Up @@ -45,6 +45,11 @@
<artifactId>keycloak-social-twitter</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>org.keycloak</groupId>
<artifactId>keycloak-social-facebook</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>org.keycloak</groupId>
<artifactId>keycloak-sdk-html</artifactId>
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34 changes: 34 additions & 0 deletions social/facebook/pom.xml
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<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">
<parent>
<artifactId>keycloak-social-parent</artifactId>
<groupId>org.keycloak</groupId>
<version>1.0-alpha-1</version>
<relativePath>../pom.xml</relativePath>
</parent>
<modelVersion>4.0.0</modelVersion>
<packaging>jar</packaging>

<artifactId>keycloak-social-facebook</artifactId>
<name>Keycloak Social Facebook</name>
<description/>

<dependencies>
<dependency>
<groupId>org.keycloak</groupId>
<artifactId>keycloak-social-core</artifactId>
<version>${project.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-client</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<scope>provided</scope>
</dependency>
</dependencies>
</project>
145 changes: 145 additions & 0 deletions social/facebook/src/main/java/org/keycloak/social/facebook/FacebookProvider.java
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package org.keycloak.social.facebook;

import java.net.URI;
import java.util.UUID;

import javax.ws.rs.client.Entity;
import javax.ws.rs.core.Form;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriBuilder;

import org.jboss.resteasy.client.jaxrs.ResteasyClient;
import org.jboss.resteasy.client.jaxrs.ResteasyClientBuilder;
import org.keycloak.social.AuthCallback;
import org.keycloak.social.AuthRequest;
import org.keycloak.social.AuthRequestBuilder;
import org.keycloak.social.SocialProvider;
import org.keycloak.social.SocialProviderConfig;
import org.keycloak.social.SocialProviderException;
import org.keycloak.social.SocialUser;

/**
* Social provider for Facebook
*
* @author <a href="mailto:[email protected]">Marek Posolda</a>
*/
public class FacebookProvider implements SocialProvider {

private static final String AUTHENTICATION_ENDPOINT_URL = "https://graph.facebook.com/oauth/authorize";

private static final String ACCESS_TOKEN_ENDPOINT_URL = "https://graph.facebook.com/oauth/access_token";

private static final String PROFILE_ENDPOINT_URL = "https://graph.facebook.com/me";

private static final String DEFAULT_RESPONSE_TYPE = "code";

private static final String DEFAULT_SCOPE = "email";

@Override
public String getId() {
return "facebook";
}

@Override
public AuthRequest getAuthUrl(SocialProviderConfig config) throws SocialProviderException {
String state = UUID.randomUUID().toString();

AuthRequestBuilder b = AuthRequestBuilder.create(state, AUTHENTICATION_ENDPOINT_URL).setQueryParam("client_id", config.getKey())
.setQueryParam("response_type", DEFAULT_RESPONSE_TYPE).setQueryParam("scope", DEFAULT_SCOPE)
.setQueryParam("redirect_uri", config.getCallbackUrl()).setQueryParam("state", state);

b.setAttribute("state", state);

return b.build();
}

@Override
public String getRequestIdParamName() {
return "state";
}

@Override
public String getName() {
return "Facebook";
}

@Override
public SocialUser processCallback(SocialProviderConfig config, AuthCallback callback) throws SocialProviderException {
String code = callback.getQueryParam(DEFAULT_RESPONSE_TYPE);

try {
if (!callback.getQueryParam("state").equals(callback.getAttribute("state"))) {
throw new SocialProviderException("Invalid state");
}

ResteasyClient client = new ResteasyClientBuilder()
.hostnameVerification(ResteasyClientBuilder.HostnameVerificationPolicy.ANY).build();

String accessToken = loadAccessToken(code, config, client);

FacebookUser facebookUser = loadUser(accessToken, client);

SocialUser socialUser = new SocialUser(facebookUser.getId());
socialUser.setEmail(facebookUser.getEmail());
socialUser.setLastName(facebookUser.getLastName());
socialUser.setFirstName(facebookUser.getFirstName());

return socialUser;
} catch (SocialProviderException spe) {
throw spe;
} catch (Exception e) {
throw new SocialProviderException(e);
}
}

protected String loadAccessToken(String code, SocialProviderConfig config, ResteasyClient client) throws SocialProviderException {
Form form = new Form();
form.param("grant_type", "authorization_code")
.param("code", code)
.param("client_id", config.getKey())
.param("client_secret", config.getSecret())
.param("redirect_uri", config.getCallbackUrl());

Response response = client.target(ACCESS_TOKEN_ENDPOINT_URL).request().post(Entity.form(form));

if (response.getStatus() != 200) {
String errorTokenResponse = response.readEntity(String.class);
throw new SocialProviderException("Access token request to Facebook failed. Status: " + response.getStatus() + ", response: " + errorTokenResponse);
}

String accessTokenResponse = response.readEntity(String.class);
return parseParameter(accessTokenResponse, "access_token");
}

protected FacebookUser loadUser(String accessToken, ResteasyClient client) throws SocialProviderException {
URI userDetailsUri = UriBuilder.fromUri(PROFILE_ENDPOINT_URL)
.queryParam("access_token", accessToken)
.queryParam("fields", "id,name,username,first_name,last_name,email")
.build();

Response response = client.target(userDetailsUri).request()
.header(HttpHeaders.ACCEPT, MediaType.APPLICATION_JSON)
.get();
if (response.getStatus() != 200) {
String errorTokenResponse = response.readEntity(String.class);
throw new SocialProviderException("Request to Facebook for obtaining user failed. Status: " + response.getStatus() + ", response: " + errorTokenResponse);
}

return response.readEntity(FacebookUser.class);
}

// Parses value of given parameter from input string like "my_param=abcd&another_param=xyz"
private String parseParameter(String input, String paramName) {
int start = input.indexOf(paramName + "=");
if (start != -1) {
input = input.substring(start + paramName.length() + 1);
int end = input.indexOf("&");
return end==-1 ? input : input.substring(0, end);
} else {
throw new IllegalArgumentException("Parameter " + paramName + " not available in response " + input);
}

}
}
77 changes: 77 additions & 0 deletions social/facebook/src/main/java/org/keycloak/social/facebook/FacebookUser.java
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package org.keycloak.social.facebook;

import org.codehaus.jackson.annotate.JsonProperty;

/**
* Wrap info about user from Facebook
*
* @author <a href="mailto:[email protected]">Marek Posolda</a>
*/
public class FacebookUser {

@JsonProperty("id")
private String id;

@JsonProperty("first_name")
private String firstName;

@JsonProperty("last_name")
private String lastName;

@JsonProperty("username")
private String username;

@JsonProperty("name")
private String name;

@JsonProperty("email")
private String email;

public String getId() {
return id;
}

public void setId(String id) {
this.id = id;
}

public String getFirstName() {
return firstName;
}

public void setFirstName(String firstName) {
this.firstName = firstName;
}

public String getLastName() {
return lastName;
}

public void setLastName(String lastName) {
this.lastName = lastName;
}

public String getUsername() {
return username;
}

public void setUsername(String username) {
this.username = username;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public String getEmail() {
return email;
}

public void setEmail(String email) {
this.email = email;
}
}
1 change: 1 addition & 0 deletions social/facebook/src/main/resources/META-INF/services/org.keycloak.social.SocialProvider
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org.keycloak.social.facebook.FacebookProvider
1 change: 1 addition & 0 deletions social/pom.xml
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Expand Up @@ -17,6 +17,7 @@
<module>core</module>
<module>google</module>
<module>twitter</module>
<module>facebook</module>
</modules>

</project>