Ondersteuning voor TLS 1.2 en AutodiscoverService

Aspose.Email for Java ondersteunt nu TLS 1.2 door gebruik te maken van de SAAJ‑API. De EWSClient biedt een statische eigenschap useSAAJAPI die kan worden ingesteld op true om TLS 1.2 te gebruiken. Aspose.Email for Java ondersteunt ook AutodiscoverService voor TLS 1.2. De volgende code‑voorbeelden demonstreren het gebruik van de SAAJ‑API en AutodiscoverService voor TLS 1.2.

Gebruik SAAJ API

De Java EE SOAP‑client gebruikt in SAAJAPI‑modus - https://docs.oracle.com/cd/E19651-01/817-2151-10/wsgjaxm.html.

Het volgende code‑voorbeeld demonstreert het gebruik van de SAAJ‑API door in te stellen EWSClient.useSAAJAPI eigenschap op true.

In het volgende code‑fragment wordt de Basic‑authenticatie‑header toegewezen:

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

In het volgende code‑fragment wordt de OAUTH2‑authenticatie‑header toegewezen:

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();

Het NTLM‑authenticatie‑code‑fragment voor 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"));

Sinds Java 9 kan de Authenticator ingesteld worden voor de verbinding:

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"));

Maven JAXB‑afhankelijkheden:

<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>

Gebruik AutodiscoverService

Het volgende code‑voorbeeld demonstreert het gebruik van AutodiscoverService voor 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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