Net::SSH::Perl::Auth(3User Contributed Perl DocumentatiNet::SSH::Perl::Auth(3)NAMENet::SSH::Perl::Auth - Base authentication class, plus utility methods
SYNOPSIS
use Net::SSH::Perl::Cipher;
# Get list of supported authentication IDs.
my $supported = Net::SSH::Perl::Auth::supported();
# Translate an auth name into an ID.
my $id = Net::SSH::Perl::Auth::id($name);
# Translate an auth ID into a name.
my $name = Net::SSH::Perl::Auth::name($id);
# Get the order in which auth methods are tested.
my $order = Net::SSH::Perl::Auth::order();
DESCRIPTIONNet::SSH::Perl::Auth provides a base class for each of the
authentication method classes. In addition, it defines a set of utility
methods that can be called either as functions or object methods.
UTILITY METHODS
supported( [ $auth_id [, $server_supports ] ])
Without arguments, returns a reference to an array of auth methods
supported by Net::SSH::Perl. These are methods that have working
Net::SSH::Perl::Auth:: implementations, essentially.
With one argument $auth_id, returns a true value if that auth method is
supported by Net::SSH::Perl, and false otherwise.
With two arguments, $auth_id and $server_supports, returns true if the
auth represented by $auth_id is supported both by Net::SSH::Perl and by
the sshd server. The list of methods supported by the server should be
in $server_supports, a bit mask sent from the server during the session
identification phase.
Can be called either as a non-exported function, i.e.
my $i_support = Net::SSH::Perl::Auth::supported();
or as an object method of a Net::SSH::Perl::Auth object, or an object
of a subclass (in which case the first argument should be
$server_supports, not the $auth_id):
if ($auth->supported($server_supports)) {
print "Server supports auth method $auth";
}
id( [ $auth_name ] )
Translates an auth method name into an ID (suitable for sending to the
sshd server, for example).
If given $auth_name translates that name into the corresponding ID. If
called as an object method, translates the object's auth class name
into the ID.
name( [ $auth_id ] )
Translates an auth method ID into a name.
If given $auth_id translates that ID into the corresponding name. If
called as an object method, returns the (stripped) object's auth class
name; for example, if the object were of type
Net::SSH::Perl::Auth::Rhosts, name would return Rhosts.
auth_order()
Returns a reference to an array containing auth method IDs. These IDs
describe the order in which authentication should be tested against the
server. So, for example, if the array listed (2, 4, 3), then the client
should test: RSA, then Rhosts-RSA, then Password authentication.
AUTH USAGE
Net::SSH::Perl::Auth->new($auth_name, $ssh)
Instantiates a new auth object of the type $auth_name, and gives it the
Net::SSH::Perl object $ssh, which should contain an open connection to
an sshd server.
Returns the auth object, which will be blessed into the actual auth
subclass.
$valid = $auth->authenticate()
Talks to the sshd server to authenticate the user; if valid, returns
true, and if invalid, returns false.
AUTH DEVELOPMENT
Classes implementing an authentication method must implement the
following two methods:
· $class->new($ssh)
Given a Net::SSH::Perl object $ssh, should construct a new auth
object and bless it into $class, presumably.
· $class->authenticate()
Authenticate the current user with the remote daemon. This requires
following the messaging protocol defined for your authentication
method. All of the data you need--user name, password (if
required), etc.--should be in the $ssh object.
Returns 1 if the authentication is successful, 0 otherwise.
AUTHOR & COPYRIGHTS
Please see the Net::SSH::Perl manpage for author, copyright, and
license information.
perl v5.14.1 2008-10-02 Net::SSH::Perl::Auth(3)
