我试图生成可以用作HTTP标头的令牌,以对HDFS WebHDFS URL和Oozie REST API URL进行身份验证。 我引用了以下网址,以获取下面的代码来生成协商令牌。 https://www.ibm.com/support/knowledgecenter/en/SS7JFU_8.5.5/com.ibm.websphere.express.doc/ae/tsec_SPNEGO_token.html
public class TokenCreation {
private static final String SPNEGO_OID = "1.3.6.1.5.5.2";
private static final String KERBEROS_OID = "1.2.840.113554.1.2.2";
public static byte[] genToken(String principal) {
System.setProperty("javax.security.auth.useSubjectCredsOnly", "false");
byte[] spnegoToken = new byte[0];
try {
Oid spnegoMechOid = new Oid(SPNEGO_OID);
Oid krb5MechOid = new Oid(KERBEROS_OID);
GSSCredential clientGssCreds = null;
GSSManager manager = GSSManager.getInstance();
GSSName gssUserName = manager.createName(principal, GSSName.NT_USER_NAME, krb5MechOid);
clientGssCreds = manager.createCredential(gssUserName.canonicalize(krb5MechOid),
GSSCredential.INDEFINITE_LIFETIME,
krb5MechOid,
GSSCredential.INITIATE_ONLY);
clientGssCreds.add(gssUserName,
GSSCredential.INDEFINITE_LIFETIME,
GSSCredential.INDEFINITE_LIFETIME,
spnegoMechOid, GSSCredential.INITIATE_ONLY);
GSSName gssServerName = manager.createName(principal, GSSName.NT_USER_NAME);
GSSContext clientContext = manager.createContext(gssServerName.canonicalize(spnegoMechOid),
spnegoMechOid,
clientGssCreds,
GSSContext.DEFAULT_LIFETIME);
// optional enable GSS credential delegation
clientContext.requestCredDeleg(true);
// create a SPNEGO token for the target server
spnegoToken = clientContext.initSecContext(spnegoToken, 0, spnegoToken.length);
} catch (GSSException e) {
e.printStackTrace();
}
return spnegoToken;
}
但是运行上面的代码后,我总是得到以下提示:
2019-09-25 14:12:51 760 [INFO] [pool-2-thread-1] c.s.n.c.u.security.KrbUtils - after loginUserFromKeytab............AtoimcUser:HTTP/host1.exmaple.com@EXAMPLE.COM
2019-09-25 14:12:51 760 [INFO] [pool-2-thread-1] c.s.n.app.oozie.OozieAppCaller - ->>>>>>User Name is HTTP/host1.exmaple.com@EXAMPLE.COM
2019-09-25 14:12:51 760 [INFO] [pool-2-thread-1] c.s.n.app.oozie.OozieAppCaller - ->>>>>>Mode is KERBEROS
>>>KinitOptions cache name is /tmp/krb5cc_0
Kerberos username [root]: ^C^C^C
Kerberos password for root:
您可以在上述输出日志的末尾看到。 总是提示“ Kerberos用户名”询问用户名。
我也尝试手动运行kinit密钥表。 并且上面的类可以成功生成令牌。 但是手动运行kinit并不是我想要的方式。
请您帮忙吗? 谢谢。
答案 0 :(得分:0)
不幸的是,Java中对Kerberos和SPNEGO的支持非常繁琐。
我创建了一个小型库来简化某些Kerberos用例:https://github.com/bedrin/kerb4j 您可以像这样使用它来生成SPNEGO令牌:
SpnegoClient spnegoClient = SpnegoClient.loginWithKeyTab("svc_consumer", "/opt/myapp/consumer.keytab");
URL url = new URL("http://api.provider.acme.com/api/operation1");
SpnegoContext context = spnegoClient.createContext("http://provider.acme.com"); // Will result in HTTP/provider.acme.com SPN
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestProperty("Authorization", context.createTokenAsAuthroizationHeader());