Soporte para TLS 1.2 y AutodiscoverService

Aspose.Email for Java ahora admite TLS 1.2 usando la API SAAJ. La EWSClient proporciona una propiedad estática useSAAJAPI que puede establecerse en true para usar TLS 1.2. Aspose.Email for Java también soporta AutodiscoverService para TLS 1.2. Los siguientes ejemplos de código demuestran el uso de la API SAAJ y AutodiscoverService para TLS 1.2.

Usar API SAAJ

El cliente SOAP Java EE usado con el modo SAAJAPI - https://docs.oracle.com/cd/E19651-01/817-2151-10/wsgjaxm.html.

El siguiente ejemplo de código demuestra el uso de la API SAAJ configurando EWSClient.useSAAJAPI propiedad a true.

En el siguiente fragmento de código se asignará el encabezado de autenticación Basic:

EWSClient.useSAAJAPI(true);
IEWSClient client = EWSClient.getEWSClient("https://outlook.office365.com/ews/exchange.asmx", "testuser", "pw", "domain");
client.listMessages();

En el siguiente fragmento de código se asignará el encabezado de autenticación OAUTH2:

EWSClient.useSAAJAPI(true);
// token provider
/*ITokenProvider provider = new ITokenProvider() {

    @Override
    public void dispose() {
    }

    @Override
    public OAuthToken getAccessToken(boolean ignoreExistingToken) {
        return null;
    }

    @Override
    public OAuthToken getAccessToken() {
        return null;
    }
};

NetworkCredential credentials = new OAuthNetworkCredential(provider);*/

// accessToken
NetworkCredential credentials = new OAuthNetworkCredential("accessToken");

IEWSClient client = EWSClient.getEWSClient("https://outlook.office365.com/ews/exchange.asmx", credentials);
client.listMessages();

El fragmento de código de autenticación NTLM para Java 8:

import java.net.Authenticator;
import java.net.PasswordAuthentication;
import java.net.URL;

static Authenticator getAuthenticator(String user, String pw, String domain) {
    final String username = domain + "\\" + user;
    final String password = pw;
    System.out.println("New Credentials " + username);
    return new Authenticator() {
        protected PasswordAuthentication getPasswordAuthentication() {
            System.out.println("Authenticate " + username);
            return new PasswordAuthentication(username, password.toCharArray());
        }
    };
}

EWSClient.useSAAJAPI(true);
System.setProperty("http.auth.preference", "NTLM");
Authenticator.setDefault(getAuthenticator("user", "pw", ""));
IEWSClient client = EWSClient.getEWSClient(new URL("https://domain.com/ews/Exchange.asmx"));

static Authenticator getAuthenticator() {

    // This block is written for suppressing a bug in sun implementation.
    // In Sun Impl client doesn't authenticate user for each connection,
    // uses cached credentials instead.
    sun.net.www.protocol.http.AuthCacheValue.setAuthCache(new sun.net.www.protocol.http.AuthCache() {
        public void remove(String pkey, sun.net.www.protocol.http.AuthCacheValue entry) {
        }
        public void put(String pkey, sun.net.www.protocol.http.AuthCacheValue value) {
        }
        public sun.net.www.protocol.http.AuthCacheValue get(String pkey, String skey) {
            return null;
        }
    });

    return new Authenticator() {
        protected PasswordAuthentication getPasswordAuthentication() {
            return getEmbeddedCredentials(getRequestingURL());
        }

        PasswordAuthentication getEmbeddedCredentials(URL url) {
            if (url == null) {
                return null;
            }
            String userInfo = url.getUserInfo();
            int colon = userInfo == null ? -1 : userInfo.indexOf(":");
            if (colon == -1) {
                return null;
            } else {
                String userName = userInfo.substring(0, colon);
                String pass;
                try {
                    pass = URLDecoder.decode(userInfo.substring(colon + 1), "UTF-8");
                } catch (UnsupportedEncodingException e) {
                    pass = "";
                }
                System.out.println("Authenticate " + userInfo);
                return new PasswordAuthentication("\\" + userName, pass.toCharArray());
            }
        }
    };
}

static URL getURL(String url, String user, String pw, String domain) throws Exception {
    String host = new URL(url).getHost();
    URL endpoint = new URL(url.replace(host, user + ":" + URLEncoder.encode(pw, "UTF-8") + "@" + host));

    return endpoint;
}

EWSClient.useSAAJAPI(true);
Authenticator.setDefault(getAuthenticator());

System.setProperty("http.auth.preference", "NTLM");
IEWSClient client1 = EWSClient.getEWSClient(getURL("https://domain.com/ews/Exchange.asmx", "user1", "pw", "domain"));
IEWSClient client2 = EWSClient.getEWSClient(getURL("https://domain.com/ews/Exchange.asmx", "user2", "pw", "domain"));

Desde Java 9, se puede establecer el Authenticator para la conexión:

static Map<String, Authenticator> authInfo = new HashMap<String, Authenticator>();
static URL getURL(String url, final String user, final String pw, final String domain) throws MalformedURLException {
    URL endpoint = new URL(new URL(url), "", new URLStreamHandler() {
        protected URLConnection openConnection(URL url) throws IOException {
            URL target = new URL(url.toString());
            HttpURLConnection connection = (HttpURLConnection) target.openConnection();
            // Cache for User@Url
            Authenticator auth = authInfo.get(user + "@" + url);
            if (auth == null) {
                auth = new Authenticator() {
                    protected PasswordAuthentication getPasswordAuthentication() {
                        System.out.println("Authenticate " + user);
                        return new PasswordAuthentication(domain + "\\" + user, pw.toCharArray());
                    }
                };
                authInfo.put(user + "@" + url, auth);
            }
            connection.setAuthenticator(auth);

            return connection;
        }
    });

    return endpoint;
}

EWSClient.useSAAJAPI(true);
System.setProperty("http.auth.preference", "NTLM");
IEWSClient client1 = EWSClient.getEWSClient(getURL("https://domain.com/ews/Exchange.asmx", "user1", "pw", "domain"));
IEWSClient client2 = EWSClient.getEWSClient(getURL("https://domain.com/ews/Exchange.asmx", "user2", "pw", "domain"));

Dependencias Maven JAXB:

<dependency>
    <groupId>javax.xml.bind</groupId>
    <artifactId>jaxb-api</artifactId>
</dependency>
<dependency>
    <groupId>com.sun.xml.bind</groupId>
    <artifactId>jaxb-impl</artifactId>
</dependency>
<dependency>
    <groupId>com.sun.xml.bind</groupId>
    <artifactId>jaxb-core</artifactId>
</dependency>
<dependency>
    <groupId>com.sun.xml.messaging.saaj</groupId>
    <artifactId>saaj-impl</artifactId>
</dependency>

Usar AutodiscoverService

El siguiente ejemplo de código muestra el uso de AutodiscoverService para TLS 1.2

AutodiscoverService service = new AutodiscoverService();
service.setCredentials(new NetworkCredential("user", "password"));
GetUserSettingsResponse response = service.getUserSettings("userSmtpAddress", UserSettingName.ExternalEwsUrl, UserSettingName.UserDisplayName);
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