在掌握整个流程时遇到一些问题。我正在尝试完成所有强大的 kerberos SSO 集成，其中 auth 用户信息是直接从 Windows 中挑选出来的。
我在用着：
- Tomcat 7 中的 Spnego 过滤器，以便从 IWA 获取用户名
- 爪哇 1.6
- 后端的 windows server 2003 / windows XP 作为客户端机器进行测试
我对整个流程的理解是这样的：
- 我可以使用 spnego 通过那个 tomcat 过滤器获取用户名（这部分已经在工作）
- 我通过 LDAP 进行单独调用（我在其上使用 Kerberos 进行身份验证），以检索我需要的有关登录用户的任何信息（例如它所属的组等）
我正在尝试使用 apacheds 2 来搜索 LDAP 部分。
问题（1）：我的理解正确吗？这通常以不同的方式完成吗？（也许使用 spnego 直接获取我需要的所有信息？）
现在，我正在尝试使用 apacheds 通过 kerberos 登录到 LDAP 后端，以便检索用户信息，如下所示：
System.setProperty("sun.security.krb5.debug", "true");
LdapConnectionConfig config = new LdapConnectionConfig();
config.setLdapHost("example.com");
config.setLdapPort(389);
config.setName("a_valid_username");
config.setCredentials("the_correct_password");
LdapNetworkConnection ldapNetworkConnection = new LdapNetworkConnection(config);
SaslGssApiRequest saslGssApiRequest = new SaslGssApiRequest();
saslGssApiRequest.setRealmName("EXAMPLE.COM");
saslGssApiRequest.setKdcHost("example.com");
System.setProperty("java.security.auth.login.config", "C:\\workspace\\kerberos_stuff\\login.conf");
saslGssApiRequest.setLoginModuleConfiguration( Configuration.getConfiguration() );
saslGssApiRequest.setLoginContextName("spnego-client");
saslGssApiRequest.setKrb5ConfFilePath("C:\\workspace\\kerberos_stuff\\krb5.ini");
saslGssApiRequest.setMutualAuthentication(false);
saslGssApiRequest.setUsername("a_valid_username");
saslGssApiRequest.setCredentials("the_correct_password");
ldapNetworkConnection.connect();
ldapNetworkConnection.bind(saslGssApiRequest);
我收到此错误：
KrbException: Server not found in Kerberos database (7)
at sun.security.krb5.KrbTgsRep.<init>(KrbTgsRep.java:61)
at sun.security.krb5.KrbTgsReq.getReply(KrbTgsReq.java:185)
at sun.security.krb5.internal.CredentialsUtil.serviceCreds(CredentialsUtil.java:294)
at sun.security.krb5.internal.CredentialsUtil.acquireServiceCreds(CredentialsUtil.java:106)
at sun.security.krb5.Credentials.acquireServiceCreds(Credentials.java:557)
at sun.security.jgss.krb5.Krb5Context.initSecContext(Krb5Context.java:594)
at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:230)
at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:162)
at com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(GssKrb5Client.java:175)
at org.apache.directory.ldap.client.api.LdapNetworkConnection.bindSasl(LdapNetworkConnection.java:3812)
at org.apache.directory.ldap.client.api.LdapNetworkConnection.access$200(LdapNetworkConnection.java:178)
at org.apache.directory.ldap.client.api.LdapNetworkConnection$2.run(LdapNetworkConnection.java:1531)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at org.apache.directory.ldap.client.api.LdapNetworkConnection.bindAsync(LdapNetworkConnection.java:1527)
at org.apache.directory.ldap.client.api.LdapNetworkConnection.bind(LdapNetworkConnection.java:1429)
<edited out>
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: KrbException: Identifier doesn't match expected value (906)
at sun.security.krb5.internal.KDCRep.init(KDCRep.java:133)
at sun.security.krb5.internal.TGSRep.init(TGSRep.java:58)
at sun.security.krb5.internal.TGSRep.<init>(TGSRep.java:53)
at sun.security.krb5.KrbTgsRep.<init>(KrbTgsRep.java:46)
... 22 more
javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Server not found in Kerberos database (7))]
at com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(GssKrb5Client.java:194)
at org.apache.directory.ldap.client.api.LdapNetworkConnection.bindSasl(LdapNetworkConnection.java:3812)
at org.apache.directory.ldap.client.api.LdapNetworkConnection.access$200(LdapNetworkConnection.java:178)
at org.apache.directory.ldap.client.api.LdapNetworkConnection$2.run(LdapNetworkConnection.java:1531)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at org.apache.directory.ldap.client.api.LdapNetworkConnection.bindAsync(LdapNetworkConnection.java:1527)
at org.apache.directory.ldap.client.api.LdapNetworkConnection.bind(LdapNetworkConnection.java:1429)
<edited out>
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: GSSException: No valid credentials provided (Mechanism level: Server not found in Kerberos database (7))
at sun.security.jgss.krb5.Krb5Context.initSecContext(Krb5Context.java:663)
at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:230)
at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:162)
at com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(GssKrb5Client.java:175)
... 14 more
Caused by: KrbException: Server not found in Kerberos database (7)
at sun.security.krb5.KrbTgsRep.<init>(KrbTgsRep.java:61)
at sun.security.krb5.KrbTgsReq.getReply(KrbTgsReq.java:185)
at sun.security.krb5.internal.CredentialsUtil.serviceCreds(CredentialsUtil.java:294)
at sun.security.krb5.internal.CredentialsUtil.acquireServiceCreds(CredentialsUtil.java:106)
at sun.security.krb5.Credentials.acquireServiceCreds(Credentials.java:557)
at sun.security.jgss.krb5.Krb5Context.initSecContext(Krb5Context.java:594)
... 17 more
Caused by: KrbException: Identifier doesn't match expected value (906)
at sun.security.krb5.internal.KDCRep.init(KDCRep.java:133)
at sun.security.krb5.internal.TGSRep.init(TGSRep.java:58)
at sun.security.krb5.internal.TGSRep.<init>(TGSRep.java:53)
at sun.security.krb5.KrbTgsRep.<init>(KrbTgsRep.java:46)
... 22 more
org.apache.directory.api.ldap.model.exception.LdapException: java.security.PrivilegedActionException: org.apache.directory.api.ldap.model.exception.LdapException: javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Server not found in Kerberos database (7))]
at org.apache.directory.ldap.client.api.LdapNetworkConnection.bindAsync(LdapNetworkConnection.java:1537)
at org.apache.directory.ldap.client.api.LdapNetworkConnection.bind(LdapNetworkConnection.java:1429)
<edited out>
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: java.security.PrivilegedActionException: org.apache.directory.api.ldap.model.exception.LdapException: javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Server not found in Kerberos database (7))]
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at org.apache.directory.ldap.client.api.LdapNetworkConnection.bindAsync(LdapNetworkConnection.java:1527)
... 8 more
Caused by: org.apache.directory.api.ldap.model.exception.LdapException: javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Server not found in Kerberos database (7))]
at org.apache.directory.ldap.client.api.LdapNetworkConnection.bindSasl(LdapNetworkConnection.java:3902)
at org.apache.directory.ldap.client.api.LdapNetworkConnection.access$200(LdapNetworkConnection.java:178)
at org.apache.directory.ldap.client.api.LdapNetworkConnection$2.run(LdapNetworkConnection.java:1531)
... 11 more
Caused by: javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Server not found in Kerberos database (7))]
at com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(GssKrb5Client.java:194)
at org.apache.directory.ldap.client.api.LdapNetworkConnection.bindSasl(LdapNetworkConnection.java:3812)
... 13 more
Caused by: GSSException: No valid credentials provided (Mechanism level: Server not found in Kerberos database (7))
at sun.security.jgss.krb5.Krb5Context.initSecContext(Krb5Context.java:663)
at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:230)
at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:162)
at com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(GssKrb5Client.java:175)
... 14 more
Caused by: KrbException: Server not found in Kerberos database (7)
at sun.security.krb5.KrbTgsRep.<init>(KrbTgsRep.java:61)
at sun.security.krb5.KrbTgsReq.getReply(KrbTgsReq.java:185)
at sun.security.krb5.internal.CredentialsUtil.serviceCreds(CredentialsUtil.java:294)
at sun.security.krb5.internal.CredentialsUtil.acquireServiceCreds(CredentialsUtil.java:106)
at sun.security.krb5.Credentials.acquireServiceCreds(Credentials.java:557)
at sun.security.jgss.krb5.Krb5Context.initSecContext(Krb5Context.java:594)
... 17 more
Caused by: KrbException: Identifier doesn't match expected value (906)
at sun.security.krb5.internal.KDCRep.init(KDCRep.java:133)
at sun.security.krb5.internal.TGSRep.init(TGSRep.java:58)
at sun.security.krb5.internal.TGSRep.<init>(TGSRep.java:53)
at sun.security.krb5.KrbTgsRep.<init>(KrbTgsRep.java:46)
... 22 more
我的问题是：
Q2：我认为 ldap+kerberos 是一个非常常用的组合；我还认为 apacheds 是用于此目的的常用库（如果不是，你们用什么？）。但是，尽我所能，我并没有真正找到任何通过 apacheds 访问 ldap 的 Kerberos 示例代码。我通过 apacheds 找到了大量有关 ldap 客户端的信息，但没有使用 kerberos 身份验证。这通常表明我做错了什么，或者我抓住了这根棍子的错误一端（走错了方向）。有什么想法吗？
Q3：SaslGssApiRequest 似乎是为了通过 kerberos 访问 ldap 的 LdapNetworkConnection 的确切方式（我的意思是 apacheds）。但是，仅在 google 上快速搜索此类名称显示的有用信息为零（例如有关如何使用它的文档）。是否有另一种更简单的方法来完成我的目标，通过使用 apacheds （我的意思是客户端）但没有 SaslGssApiRequest ？
Q4：为什么我上面的代码不起作用？请注意，如果我更改任何一个用户或传递给无效的东西（我目前正在使用我的常规 XP 用户用户/传递来登录到 ldap），我会得到完全相同的错误。是否需要在某处指定 ldap 的服务主体名称（即使我已经指定了主机/端口）？如果有，在哪里？
PS 我的 login.conf 和 krb5.ini 文件与我在已经工作的 spnego 示例中使用的完全相同，因此它们应该是正确的。