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## org.tmatesoft.svn.core.auth
Interface ISVNAuthenticationProvider

public interface ISVNAuthenticationProvider

The ISVNAuthenticationProvider interface is implemented by user credentials providers. Such a provider is set to an authentication manager calling `setAuthenticationProvider()`. When a repository server pulls user's credentials, an SVNRepository driver asks the registered ISVNAuthenticationManager for credentials. The auth manager in its turn will ask the registered auth provider for credentials.

ISVNAuthenticationProvider may be implemented to keep a list of credentials, for example, there is such a default SVNKit implementation (that comes along with a default implementation of ISVNAuthenticationManager - org.tmatesoft.svn.core.internal.wc.DefaultSVNAuthenticationManager), that saves credentials in and retrieves them from the in-memory cache only during runtime (not on the disk); or the default one that uses the auth area cache (read the Subversion book chapter).

Since:
  1.2
Version:
  1.3
Author:
  TMate Software Ltd.
See Also:
  `ISVNAuthenticationManager`, `SVNRepository`

Field Summary
`static int` | `ACCEPTED` Denotes that a user credential is accepted by a server and will be cached on the disk.
`static int` | `ACCEPTED_TEMPORARY` Denotes that a user credential is accepted by a server and will be cached only during runtime, not on the disk.
`static int` | `REJECTED` Denotes that a user credential is rejected by a server.

Method Summary
`int` | `acceptServerAuthentication(SVNURL url, String realm, Object certificate, boolean resultMayBeStored)` Checks a server authentication certificate and whether accepts it (if the client trusts it) or not.
`SVNAuthentication` | `requestClientAuthentication(String kind, SVNURL url, String realm, SVNErrorMessage errorMessage, SVNAuthentication previousAuth, boolean authMayBeStored)` Returns a next user credential of the specified kind for the given authentication realm.

Field Detail

### REJECTED

    public static final int REJECTED

  Denotes that a user credential is rejected by a server.

  See Also:
    Constant Field Values

### ACCEPTED_TEMPORARY

    public static final int ACCEPTED_TEMPORARY

  Denotes that a user credential is accepted by a server and will be cached only during runtime, not on the disk.

  See Also:
    Constant Field Values

### ACCEPTED

    public static final int ACCEPTED

  Denotes that a user credential is accepted by a server and will be cached on the disk.

  See Also:
    Constant Field Values

Method Detail

### requestClientAuthentication

    public SVNAuthentication requestClientAuthentication(String kind,
                                                         SVNURL url,
                                                         String realm,
                                                         SVNErrorMessage errorMessage,
                                                         SVNAuthentication previousAuth,
                                                         boolean authMayBeStored)

  Returns a next user credential of the specified kind for the given authentication realm.

  If this provider has got more than one credentials (say, a list of credentials), to get the first one of them `previousAuth` is set to null.

  Parameters:
    `kind` - a credential kind (for example, like those defined in `ISVNAuthenticationManager`)
    `url` - a repository location that is to be accessed
    `realm` - a repository authentication realm (host, port, realm string)
    `errorMessage` - the recent authentication failure error message
    `previousAuth` - the credential that was previously retrieved (to tell if it's not accepted)
    `authMayBeStored` - if true then the returned credential can be cached, otherwise it won't be cached anyway
  Returns:
    a next user credential

### acceptServerAuthentication

    public int acceptServerAuthentication(SVNURL url,
                                          String realm,
                                          Object certificate,
                                          boolean resultMayBeStored)

  Checks a server authentication certificate and whether accepts it (if the client trusts it) or not.

  This method is used by an SSL manager (see `DefaultSVNSSLTrustManager`).

  Parameters:
    `url` - a repository location that is accessed
    `realm` - a repository authentication realm (host, port, realm string)
    `certificate` - a server certificate object
    `resultMayBeStored` - if true then the server certificate can be cached, otherwise not
  Returns:
    the result of the certificate check (`REJECTED`, `ACCEPTED_TEMPORARY`, or `ACCEPTED`)

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Copyright © 2004-2009 TMate Software Ltd. All Rights Reserved.