CRAM_MD5(3)

NAME

       Authen::SASL - SASL Authentication framework

SYNOPSIS

        use Authen::SASL;

        $sasl = Authen::SASL->new(
          mechanism => 'CRAM-MD5 PLAIN ANONYMOUS',
          callback => {
            pass => \&fetch_password,
            user => $user,
          }
        );

DESCRIPTION

       SASL is a generic mechanism for authentication used by several network
       protocols. Authen::SASL provides an implementation framework that all
       protocols should be able to share.

       The framework allows different implementations of the connection class
       to be plugged in. At the time of writing there were two such plugins.

       Authen::SASL::Perl
           This module implements several mechanisms and is implemented
           entirely in Perl.

       Authen::SASL::Cyrus
           This module uses the Cyrus SASL C-library (both version 1 and 2 are
           supported).

       By default the order in which these plugins are selected is
       Authen::SASL::Cyrus first and then Authen::SASL::Perl.

       If you want to change it or want to specifically use one implementation
       only simply do

        use Authen::SASL qw(Perl);

       or if you have another plugin module that supports the Authen::SASL API

        use Authen::SASL qw(My::SASL::Plugin);

       CONTRUCTOR

       The contructor may be called with or without arguments. Passing argu-
       ments is just a short cut to calling the "mechanism" and "callback"
       methods.

       METHODS

       mechanism
           Returns the current list of mechanisms

       mechanism NAMES
           Set the list of mechanisms to choose from. NAMES should be a space
           separated string of the names.

       callback NAME
           Returns the current callback associated with NAME

       callback NAME => VALUE, NAME => VALUE, ...
           Sets the given callbacks to the given values

       client_new SERVICE, HOST, SECURITY
           Creates and returns a new connection object for a client-side con-
           nection.

       server_new SERVICE, HOST
           Creates and returns a new connection object for a server-side con-
           nection.  Currently only supported by Authen::SASL::Cyrus.

       error
           Returns any error from the last connection

The Connection Class

       server_start ( CHALLENGE )
           server_start begins the authentication using the chosen mechanism.
           If the mechanism is not supported by the installed SASL it fails.
           Because for some mechanisms the client has to start the negotia-
           tion, you can give the client challenge as a parameter.

       server_step ( CHALLENGE )
           server_step performs the next step in the negotiation process. The
           first parameter you give is the clients challenge/response.

       client_start
           The initial step to be performed. Returns the initial value to pass
           to the server or an empty list on error.

       client_step CHALLENGE
           This method is called when a response from the server requires it.
           CHALLENGE is the value from the server. Returns the next value to
           pass to the server or an empty list on error.

       answer NAME
           The method will return the value returned from the last call to the
           callback NAME

       property NAME
       property NAME => VALUE, NAME => VALUE
       service
           Returns the service argument that was passed to *_new-methods.

       host
           Returns the host argument that was passed to *_new-methods.

       mechanism
           Returns the name of the chosen mechanism.

       Callbacks

       There are three different ways in which a callback may be passed

       CODEREF
           If the value passed is a code reference then, when needed, it will
           be called and the connection object will be passed as the first
           argument. In addition some callbacks may be passed additional argu-
           ments.

       ARRAYREF
           If the value passed is an array reference, the first element in the
           array must be a code reference. When the callback is called the
           code reference will be called with the connection object passed as
           the first argument and all other values from the array passed
           after.

       SCALAR
           All other values passed will be used directly. ie it is the same as
           passing an code reference that, when called, returns the value.

SEE ALSO

       Authen::SASL::Perl, Authen::SASL::Cyrus (for more methods that cur-
       rently only support by Authen::SASL::Cyrus)

AUTHOR

       Graham Barr <gbarr@pobox.com>

       Please report any bugs, or post any suggestions, to the perl-ldap mail-
       ing list <perl-ldap@perl.org>

COPYRIGHT

       Copyright (c) 1998-2005 Graham Barr. All rights reserved. This program
       is free software; you can redistribute it and/or modify it under the
       same terms as Perl itself.

perl v5.8.8                       2006-03-25                   Authen::SASL(3)
See also Authen::SASL::Perl(3)
See also Authen::SASL::Perl::ANONYMOUS(3)
See also Authen::SASL::Perl::CRAM_MD5(3)
See also Authen::SASL::Perl::DIGEST_MD5(3)
See also Authen::SASL::Perl::EXTERNAL(3)
See also Authen::SASL::Perl::GSSAPI(3)
See also Authen::SASL::Perl::LOGIN(3)
See also Authen::SASL::Perl::PLAIN(3)
See also LWP::Authen::Ntlm(3)