Package jcifs.smb

Class SIDCacheImpl

java.lang.Object

jcifs.smb.SIDCacheImpl

All Implemented Interfaces:

SidResolver

public class SIDCacheImpl
extends Object
implements SidResolver

Internal use only: SID resolver cache

Author:

mbechler

Constructor Summary

Constructors

Constructor	Description
SIDCacheImpl(CIFSContext baseContext)

Method Summary

Modifier and Type	Method	Description
SID[]	getGroupMemberSids(CIFSContext tc, String authorityServerName, SID domsid, int rid, int flags)
Map<SID,List<SID>>	getLocalGroupsMap(CIFSContext tc, String authorityServerName, int flags)	This specialized method returns a Map of users and local groups for the target server where keys are SIDs representing an account and each value is an ArrayList of SIDs represents the local groups that the account is a member of.
SID	getServerSid(CIFSContext tc, String server)
void	resolveSids(CIFSContext tc, String authorityServerName, SID[] sids)	Resolve an array of SIDs using a cache and at most one MSRPC request.
void	resolveSids(CIFSContext tc, String authorityServerName, SID[] sids, int offset, int length)	Resolve part of an array of SIDs using a cache and at most one MSRPC request.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SIDCacheImpl

public SIDCacheImpl(CIFSContext baseContext)

Parameters:

baseContext -

Method Detail

resolveSids

public void resolveSids(CIFSContext tc,
                        String authorityServerName,
                        SID[] sids,
                        int offset,
                        int length)
                 throws CIFSException

Description copied from interface: SidResolver

Resolve part of an array of SIDs using a cache and at most one MSRPC request.

Specified by:

resolveSids in interface SidResolver

Throws:

CIFSException

resolveSids

public void resolveSids(CIFSContext tc,
                        String authorityServerName,
                        SID[] sids)
                 throws CIFSException

Resolve an array of SIDs using a cache and at most one MSRPC request.

This method will attempt to resolve SIDs using a cache and cache the results of any SIDs that required resolving with the authority. SID cache entries are currently not expired because under normal circumstances SID information never changes.

Specified by:

resolveSids in interface SidResolver

Parameters:

authorityServerName - The hostname of the server that should be queried. For maximum efficiency this should be the hostname of a domain controller however a member server will work as well and a domain controller may not return names for SIDs corresponding to local accounts for which the domain controller is not an authority.

tc - The context that should be used to communicate with the named server.

sids - The SIDs that should be resolved. After this function is called, the names associated with the SIDs may be queried with the toDisplayString, getDomainName, and getAccountName methods.

Throws:

CIFSException

getServerSid

public SID getServerSid(CIFSContext tc,
                        String server)
                 throws CIFSException

Specified by:

getServerSid in interface SidResolver

Returns:

the server's SID

Throws:

CIFSException

getGroupMemberSids

public SID[] getGroupMemberSids(CIFSContext tc,
                                String authorityServerName,
                                SID domsid,
                                int rid,
                                int flags)
                         throws CIFSException

Specified by:

getGroupMemberSids in interface SidResolver

Returns:

the SIDs of the group members

Throws:

CIFSException

getLocalGroupsMap

public Map<SID,List<SID>> getLocalGroupsMap(CIFSContext tc,
                                                  String authorityServerName,
                                                  int flags)
                                           throws CIFSException

This specialized method returns a Map of users and local groups for the target server where keys are SIDs representing an account and each value is an ArrayList of SIDs represents the local groups that the account is a member of.

This method is designed to assist with computing access control for a given user when the target object's ACL has local groups. Local groups are not listed in a user's group membership (e.g. as represented by the tokenGroups constructed attribute retrieved via LDAP).

Domain groups nested inside a local group are currently not expanded. In this case the key (SID) type will be SID_TYPE_DOM_GRP rather than SID_TYPE_USER.

Specified by:

getLocalGroupsMap in interface SidResolver

Parameters:

tc - The context to use

authorityServerName - The server from which the local groups will be queried.

flags - Flags that control the behavior of the operation. When all name associated with SIDs will be required, the SID_FLAG_RESOLVE_SIDS flag should be used which causes all group member SIDs to be resolved together in a single more efficient operation.

Returns:

a map of group SID to member SIDs

Throws:

CIFSException

See Also:

SidResolver.getLocalGroupsMap(jcifs.CIFSContext, java.lang.String, int)