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javax.security.sasl
Interface SaslClientFactory
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public interface SaslClientFactory
An interface for creating instances of
SaslClient
. A class that implements this interface must be thread-safe and handle multiple simultaneous requests. It must also have a public constructor that accepts no argument.
This interface is not normally accessed directly by a client, which will use the
Sasl
static methods instead. However, a particular environment may provide and install a new or different
SaslClientFactory
.
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Since:
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1.5
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See Also:
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SaslClient
,
Sasl
createSaslClient
SaslClientcreateSaslClient(String[] mechanisms,
String authorizationId,
String protocol,
String serverName,
Map<? super String< String,?> props,
CallbackHandler cbh)
throws SaslException
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Creates a SaslClient using the parameters supplied.
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Parameters:
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mechanisms - The non-null list of mechanism names to try. Each is the IANA-registered name of a SASL mechanism. (e.g. "GSSAPI", "CRAM-MD5").
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authorizationId - The possibly null protocol-dependent identification to be used for authorization. If null or empty, the server derives an authorization ID from the client's authentication credentials. When the SASL authentication completes successfully, the specified entity is granted access.
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protocol - The non-null string name of the protocol for which the authentication is being performed (e.g., "ldap").
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serverName - The non-null fully qualified host name of the server to authenticate to.
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props - The possibly null set of properties used to select the SASL mechanism and to configure the authentication exchange of the selected mechanism. See the
Sasl
class for a list of standard properties. Other, possibly mechanism-specific, properties can be included. Properties not relevant to the selected mechanism are ignored.
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cbh - The possibly null callback handler to used by the SASL mechanisms to get further information from the application/library to complete the authentication. For example, a SASL mechanism might require the authentication ID, password and realm from the caller. The authentication ID is requested by using a
NameCallback
. The password is requested by using a
PasswordCallback
. The realm is requested by using a
RealmChoiceCallback
if there is a list of realms to choose from, and by using a
RealmCallback
if the realm must be entered.
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Returns:
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A possibly null
SaslClient
created using the parameters supplied. If null, this factory cannot produce a
SaslClient
using the parameters supplied.
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Throws:
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SaslException
- If cannot create a
SaslClient
because of an error.
getMechanismNames
String[] getMechanismNames(Map<? super String< String,?> props)
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Returns an array of names of mechanisms that match the specified mechanism selection policies.
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Parameters:
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props - The possibly null set of properties used to specify the security policy of the SASL mechanisms. For example, if
props
contains the
Sasl.POLICY_NOPLAINTEXT
property with the value
"true"
, then the factory must not return any SASL mechanisms that are susceptible to simple plain passive attacks. See the
Sasl
class for a complete list of policy properties. Non-policy related properties, if present in
props
, are ignored.
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Returns:
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A non-null array containing a IANA-registered SASL mechanism names.