/usr/share/perl5/Authen/SASL/Perl/LOGIN.pm is in libauthen-sasl-perl 2.1600-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 | # Copyright (c) 2002 Graham Barr <gbarr@pobox.com>. All rights reserved.
# This program is free software; you can redistribute it and/or
# modify it under the same terms as Perl itself.
package Authen::SASL::Perl::LOGIN;
use strict;
use vars qw($VERSION @ISA);
$VERSION = "2.14";
@ISA = qw(Authen::SASL::Perl);
my %secflags = (
noanonymous => 1,
);
sub _order { 1 }
sub _secflags {
shift;
scalar grep { $secflags{$_} } @_;
}
sub mechanism { 'LOGIN' }
sub client_start {
my $self = shift;
$self->{stage} = 0;
'';
}
sub client_step {
my ($self, $string) = @_;
# XXX technically this is wrong. I might want to change that.
# spec say it's "staged" and that the content of the challenge doesn't
# matter
# actually, let's try
my $stage = ++$self->{stage};
if ($stage == 1) {
return $self->_call('user');
}
elsif ($stage == 2) {
return $self->_call('pass');
}
elsif ($stage == 3) {
$self->set_success;
return;
}
else {
return $self->set_error("Invalid sequence");
}
}
sub server_start {
my $self = shift;
my $response = shift;
my $user_cb = shift || sub {};
$self->{answer} = {};
$self->{stage} = 0;
$self->{need_step} = 1;
$self->{error} = undef;
$user_cb->('Username:');
return;
}
sub server_step {
my $self = shift;
my $response = shift;
my $user_cb = shift || sub {};
my $stage = ++$self->{stage};
if ($stage == 1) {
unless (defined $response) {
$self->set_error("Invalid sequence (empty username)");
return $user_cb->();
}
$self->{answer}{user} = $response;
return $user_cb->("Password:");
}
elsif ($stage == 2) {
unless (defined $response) {
$self->set_error("Invalid sequence (empty pass)");
return $user_cb->();
}
$self->{answer}{pass} = $response;
}
else {
$self->set_error("Invalid sequence (end)");
return $user_cb->();
}
my $error = "Credentials don't match";
my $answers = { user => $self->{answer}{user}, pass => $self->{answer}{pass} };
if (my $checkpass = $self->{callback}{checkpass}) {
my $cb = sub {
my $result = shift;
unless ($result) {
$self->set_error($error);
}
else {
$self->set_success;
}
$user_cb->();
};
$checkpass->($self => $answers => $cb );
return;
}
elsif (my $getsecret = $self->{callback}{getsecret}) {
my $cb = sub {
my $good_pass = shift;
if ($good_pass && $good_pass eq ($self->{answer}{pass} || "")) {
$self->set_success;
}
else {
$self->set_error($error);
}
$user_cb->();
};
$getsecret->($self => $answers => $cb );
return;
}
else {
$self->set_error($error);
$user_cb->();
}
return;
}
1;
__END__
=head1 NAME
Authen::SASL::Perl::LOGIN - Login Authentication class
=head1 SYNOPSIS
use Authen::SASL qw(Perl);
$sasl = Authen::SASL->new(
mechanism => 'LOGIN',
callback => {
user => $user,
pass => $pass
},
);
=head1 DESCRIPTION
This method implements the client and server part of the LOGIN SASL algorithm,
as described in IETF Draft draft-murchison-sasl-login-XX.txt.
=head2 CALLBACK
The callbacks used are:
=head3 Client
=over 4
=item user
The username to be used for authentication
=item pass
The user's password to be used for authentication
=back
=head3 Server
=over 4
=item getsecret(username)
returns the password associated with C<username>
=item checkpass(username, password)
returns true and false depending on the validity of the credentials passed
in arguments.
=back
=head1 SEE ALSO
L<Authen::SASL>,
L<Authen::SASL::Perl>
=head1 AUTHORS
Software written by Graham Barr <gbarr@pobox.com>,
documentation written by Peter Marschall <peter@adpm.de>.
Server support by Yann Kerherve <yannk@cpan.org>
Please report any bugs, or post any suggestions, to the perl-ldap mailing list
<perl-ldap@perl.org>
=head1 COPYRIGHT
Copyright (c) 2002-2004 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.
Documentation Copyright (c) 2004 Peter Marschall.
All rights reserved. This documentation is distributed,
and may be redistributed, under the same terms as Perl itself.
Server support Copyright (c) 2009 Yann Kerherve.
All rights reserved. This program is free software; you can redistribute
it and/or modify it under the same terms as Perl itself.
=cut
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