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

All Known Implementing Classes:
  BasicAuthenticationManager

public interface ISVNAuthenticationManager

The ISVNAuthenticationManager is implemented by manager classes used by SVNRepository drivers for user authentication purposes.

When an SVNRepository driver is created, you should provide an authentication manager via a call to:

     import org.tmatesoft.svn.core.io.SVNRepository;
     import org.tmatesoft.svn.core.auth.ISVNAuthenticationManager;
     ...
         SVNRepository repository;
         ISVNAuthenticationManager authManger;
         ...

         repository.setAuthenticationManager(authManager);
         ...

SVNKit provides a default authentication manager implementation - org.tmatesoft.svn.core.internal.wc.DefaultSVNAuthenticationManager. This manager has got the following features:

- uses the auth storage from the default Subversion runtime configuration area;
- may use the auth storage in the directory you specify;
- uses the ssh, ssl & proxy options from the standard config and servers files;
- stores credentials in the in-memory cache during runtime;

You may also specify your own auth provider (ISVNAuthenticationProvider) to this default manager, it will be used along with those default ones, that implement the features listed above.

If using the https:// protocol and if no user's authentication provider implementation is set to the default manager, server certificates are accepted temporarily and therefore are not cached on the disk. To enable server CAs caching, a user should set an authentication provider implementation which `acceptServerAuthentication()` method must return `ISVNAuthenticationProvider.ACCEPTED`. That will switch on certificate on-the-disk caching.

How to get a default auth manager instance see `SVNWCUtil`.

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

Field Summary
`static String` `PASSWORD` A simple password credential kind ("svn.simple")
`static String` `SSH` An ssh credential kind ("svn.ssh")
`static String` `SSL` An ssl credential kind ("svn.ssl")
`static String` `USERNAME` A simple username credential kind ("svn.username").

Method Summary
`void` `acknowledgeAuthentication(boolean accepted, String kind, String realm, SVNErrorMessage errorMessage, SVNAuthentication authentication)` Accepts the given authentication if it was successfully accepted by a repository server, or not if authentication failed.
`void` `acknowledgeTrustManager(TrustManager manager)` Acknowledges the specified trust manager.
`int` `getConnectTimeout(SVNRepository repository)` Returns the connection timeout value in milliseconds which `repository` should use in network connection operations.
`SVNAuthentication` `getFirstAuthentication(String kind, String realm, SVNURL url)` Retrieves the first user credential.
`SVNAuthentication` `getNextAuthentication(String kind, String realm, SVNURL url)` Retrieves the next user credential if the first try failed.
`ISVNProxyManager` `getProxyManager(SVNURL url)` Returns a proxy manager that keeps settings for that proxy server over which HTTP requests are send to a repository server.
`int` `getReadTimeout(SVNRepository repository)` Returns the read timeout value in milliseconds which `repository` should use in socket read operations.
`TrustManager` `getTrustManager(SVNURL url)` Returns a manager which handles trust data for the specified `url`.
`boolean` `isAuthenticationForced()` Checks whether client should send authentication credentials to a repository server not waiting for the server's challenge.
`void` `setAuthenticationProvider(ISVNAuthenticationProvider provider)` Sets a custom authentication provider that will provide user credentials for authentication.

Field Detail

### PASSWORD

    public static final String PASSWORD

  A simple password credential kind ("svn.simple")

  See Also:
    Constant Field Values

### SSH

    public static final String SSH

  An ssh credential kind ("svn.ssh")

  See Also:
    Constant Field Values

### SSL

    public static final String SSL

  An ssl credential kind ("svn.ssl")

  See Also:
    Constant Field Values

### USERNAME

    public static final String USERNAME

  A simple username credential kind ("svn.username"). Only usernames are cached/provided matched against an appropriate realms (which are repository UUIDs in this case). In particular this kind is used in `file:///` and `svn+ssh://` access schemes.

  See Also:
    Constant Field Values

Method Detail

### setAuthenticationProvider

    public void setAuthenticationProvider(ISVNAuthenticationProvider provider)

  Sets a custom authentication provider that will provide user credentials for authentication.

  Parameters:
    `provider` - an authentication provider

### getProxyManager

    public ISVNProxyManager getProxyManager(SVNURL url)
                                     throws SVNException

  Returns a proxy manager that keeps settings for that proxy server over which HTTP requests are send to a repository server.

  A default auth manager uses proxy settings from the standard servers file.

  Parameters:
    `url` - a repository location that will be accessed over the proxy server for which a manager is needed
  Returns:
    a proxy manager
  Throws:
    `SVNException`

### getTrustManager

    public TrustManager getTrustManager(SVNURL url)
                                 throws SVNException

  Returns a manager which handles trust data for the specified `url`.

  Note: in pre-1.2.0 versions `ISVNAuthenticationManager` used to provide `ISVNSSLManager` via a method `getSSLManager()` which is now replaced by this one. `ISVNSSLManager` is no longer used (replaced by `TrustManager`).

  Parameters:
    `url` - repository url
  Returns:
    trust manager
  Throws:
    `SVNException`
  Since:
    1.2.0

### getFirstAuthentication

    public SVNAuthentication getFirstAuthentication(String kind,
                                                    String realm,
                                                    SVNURL url)
                                             throws SVNException

  Retrieves the first user credential. The scheme of retrieving credentials:
  - For the first try to authenticate a user to a repository (using the specifed realm) an SVNRepository driver calls getFirstAuthentication() and sends the retrieved credential.
  - If the credential is accepted, it may be stored. If not, the driver calls `getNextAuthentication()` and sends the next credential.
  - If the last credential was not accepted, the driver still tries to get the next credential for the same realm.

  For each credential `kind` an implementor should return a kind-specific credential. The following table matches kinds to proper credential classes:

  Credential Kind | Credential Class
  `PASSWORD` | `SVNPasswordAuthentication`
  `SSH` | `SVNSSHAuthentication`
  `SSL` | `SVNSSLAuthentication`
  `USERNAME` | `SVNUserNameAuthentication`

  Parameters:
    `kind` - a credential kind
    `realm` - a repository authentication realm
    `url` - a repository location that is to be accessed
  Returns:
    the first try user credential
  Throws:
    `SVNException`

### getNextAuthentication

    public SVNAuthentication getNextAuthentication(String kind,
                                                   String realm,
                                                   SVNURL url)
                                            throws SVNException

  Retrieves the next user credential if the first try failed. The scheme of retrieving credentials:
  - For the first try to authenticate a user to a repository (using the specifed realm) an SVNRepository driver calls `getFirstAuthentication()` and sends the retrieved credential.
  - If the credential is accepted, it may be stored. If not, the driver calls getNextAuthentication() and sends the next credential.
  - If the last credential was not accepted, the driver still tries to get the next credential for the same realm.

  For each credential `kind` an implementor should return a kind-specific credential. The following table matches kinds to proper credential classes:

  Credential Kind | Credential Class
  `PASSWORD` | `SVNPasswordAuthentication`
  `SSH` | `SVNSSHAuthentication`
  `SSL` | `SVNSSLAuthentication`
  `USERNAME` | `SVNUserNameAuthentication`

  Parameters:
    `kind` - a credential kind
    `realm` - a repository authentication realm
    `url` - a repository location that is to be accessed
  Returns:
    the next try user credential
  Throws:
    `SVNException`

### acknowledgeAuthentication

    public void acknowledgeAuthentication(boolean accepted,
                                          String kind,
                                          String realm,
                                          SVNErrorMessage errorMessage,
                                          SVNAuthentication authentication)
                                   throws SVNException

  Accepts the given authentication if it was successfully accepted by a repository server, or not if authentication failed. As a result the provided credential may be cached (authentication succeeded) or deleted from the cache (authentication failed).

  Parameters:
    `accepted` - true if the credential was accepted by the server, otherwise false
    `kind` - a credential kind (`PASSWORD` or `SSH` or `USERNAME`)
    `realm` - a repository authentication realm
    `errorMessage` - the reason of the authentication failure
    `authentication` - a user credential to accept/drop
  Throws:
    `SVNException`

### acknowledgeTrustManager

    public void acknowledgeTrustManager(TrustManager manager)

  Acknowledges the specified trust manager. This method is called only when a secure connection is successfully established with the specified `manager`.

  Parameters:
    `manager` - trust manager to acknowledge (one returned by `getTrustManager(SVNURL)`)
  Since:
    1.2.0

### isAuthenticationForced

    public boolean isAuthenticationForced()

  Checks whether client should send authentication credentials to a repository server not waiting for the server's challenge.

  In some cases it may be necessary to send credentials beforehand, not waiting until the server asks to do it itself. To achieve such behaviour an implementor should return true from this routine.

  Returns:
    true if authentication credentials are forced to be sent;false when credentials are to be sent only in response to a server challenge

### getReadTimeout

    public int getReadTimeout(SVNRepository repository)

  Returns the read timeout value in milliseconds which `repository` should use in socket read operations. Socket read operations will block only for this amount of time.

  Parameters:
    `repository` - a repository access driver
  Returns:
    connection timeout value
  Since:
    1.2.0

### getConnectTimeout

    public int getConnectTimeout(SVNRepository repository)

  Returns the connection timeout value in milliseconds which `repository` should use in network connection operations.

  Parameters:
    `repository` - repository access object
  Returns:
    connection timeout value in milliseconds which will be set to a socket
  Since:
    1.2.0

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