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package GSSAPI;
require 5.005_62;
use strict;
use warnings;
use Carp;
require Exporter;
use XSLoader;
our @ISA = qw(Exporter);
our $VERSION = '0.26';
# Items to export into callers namespace by default. Note: do not export
# names by default without a very good reason. Use EXPORT_OK instead.
# Do not simply export all your public functions/methods/constants.
# This allows declaration use GSSAPI ':all';
# If you do not need this, moving things directly into @EXPORT or @EXPORT_OK
# will save memory.
our %EXPORT_TAGS = ( 'all' => [ qw(
GSS_C_ACCEPT
GSS_C_AF_APPLETALK
GSS_C_AF_BSC
GSS_C_AF_CCITT
GSS_C_AF_CHAOS
GSS_C_AF_DATAKIT
GSS_C_AF_DECnet
GSS_C_AF_DLI
GSS_C_AF_DSS
GSS_C_AF_ECMA
GSS_C_AF_HYLINK
GSS_C_AF_IMPLINK
GSS_C_AF_INET
GSS_C_AF_LAT
GSS_C_AF_LOCAL
GSS_C_AF_NBS
GSS_C_AF_NS
GSS_C_AF_NULLADDR
GSS_C_AF_OSI
GSS_C_AF_PUP
GSS_C_AF_SNA
GSS_C_AF_UNSPEC
GSS_C_AF_X25
GSS_C_ANON_FLAG
GSS_C_BOTH
GSS_C_CALLING_ERROR_MASK
GSS_C_CALLING_ERROR_OFFSET
GSS_C_CONF_FLAG
GSS_C_DELEG_FLAG
GSS_C_EMPTY_BUFFER
GSS_C_GSS_CODE
GSS_C_INDEFINITE
GSS_C_INITIATE
GSS_C_INTEG_FLAG
GSS_C_MECH_CODE
GSS_C_MUTUAL_FLAG
GSS_C_NO_BUFFER
GSS_C_NO_CHANNEL_BINDINGS
GSS_C_NO_CONTEXT
GSS_C_NO_CREDENTIAL
GSS_C_NO_NAME
GSS_C_NO_OID
GSS_C_NO_OID_SET
GSS_C_PROT_READY_FLAG
GSS_C_QOP_DEFAULT
GSS_C_REPLAY_FLAG
GSS_C_ROUTINE_ERROR_MASK
GSS_C_ROUTINE_ERROR_OFFSET
GSS_C_SEQUENCE_FLAG
GSS_C_SUPPLEMENTARY_MASK
GSS_C_SUPPLEMENTARY_OFFSET
GSS_C_TRANS_FLAG
GSS_S_BAD_BINDINGS
GSS_S_BAD_MECH
GSS_S_BAD_NAME
GSS_S_BAD_NAMETYPE
GSS_S_BAD_QOP
GSS_S_BAD_SIG
GSS_S_BAD_STATUS
GSS_S_CALL_BAD_STRUCTURE
GSS_S_CALL_INACCESSIBLE_READ
GSS_S_CALL_INACCESSIBLE_WRITE
GSS_S_COMPLETE
GSS_S_CONTEXT_EXPIRED
GSS_S_CONTINUE_NEEDED
GSS_S_CREDENTIALS_EXPIRED
GSS_S_CRED_UNAVAIL
GSS_S_DEFECTIVE_CREDENTIAL
GSS_S_DEFECTIVE_TOKEN
GSS_S_DUPLICATE_ELEMENT
GSS_S_DUPLICATE_TOKEN
GSS_S_FAILURE
GSS_S_GAP_TOKEN
GSS_S_NAME_NOT_MN
GSS_S_NO_CONTEXT
GSS_S_NO_CRED
GSS_S_OLD_TOKEN
GSS_S_UNAUTHORIZED
GSS_S_UNAVAILABLE
GSS_S_UNSEQ_TOKEN
indicate_mechs
) ] );
our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
our @EXPORT = ( @{ $EXPORT_TAGS{'all'} } );
XSLoader::load 'GSSAPI', $VERSION;
sub import {
my $self = shift;
my @args = @_;
my $package = caller;
$self->export_to_level(1, $self, @args);
foreach (qw(Status OID OID::Set)) {
eval "package $package; use GSSAPI::$_ \@args; 1"
or croak $@;
}
}
{
no strict 'refs';
foreach my $pack (qw(Context Cred Name)) {
@{"GSSAPI::${pack}::ISA"} = "GSSAPI";
}
}
# Preloaded methods go here.
use constant GSS_C_NO_NAME => undef;
use constant GSS_C_NO_BUFFER => undef;
use constant GSS_C_NO_OID => undef;
use constant GSS_C_NO_OID_SET => undef;
use constant GSS_C_NO_CONTEXT => undef;
use constant GSS_C_NO_CREDENTIAL => undef;
use constant GSS_C_NO_CHANNEL_BINDINGS => undef;
use constant GSS_C_EMPTY_BUFFER => "";
1;
__END__
=head1 NAME
GSSAPI - Perl extension providing access to the GSSAPIv2 library
=head1 SYNOPSIS
use GSSAPI;
my $targethostname = 'HTTP@moerbsen.grolmsnet.lan';
my $status;
TRY: {
my ($target, $tname, $ttl );
$status = GSSAPI::Name->import( $target,
$server,
GSSAPI::OID::gss_nt_hostbased_service)
or last;
$status = $target->display($tname) or last;
print "\n using Name $tname";
my $ctx = GSSAPI::Context->new();
my $imech = GSSAPI::OID::gss_mech_krb5;
my $iflags = 0 ;
my $bindings = GSS_C_NO_CHANNEL_BINDINGS;
my $creds = GSS_C_NO_CREDENTIAL;
my $itime = 0;
my $itoken = q{};
my $otoken;
$status = $ctx->init($creds,$target,
$imech,$iflags,$itime,$bindings,$itoken,
undef, $otoken,undef,undef) or last;
$status = $ctx->valid_time_left($ttl) or last;
print "\n Security context's time to live $ttl secs";
}
unless ($status->major == GSS_S_COMPLETE ) {
print "\nErrors: ", $status;
} else {
print "\n seems everything is fine, type klist to see the ticket\n";
=head1 DESCRIPTION
This module gives access to the routines of the GSSAPI library,
as described in rfc2743 and rfc2744 and implemented by the
Kerberos-1.2 distribution from MIT.
Since 0.14 it also compiles and works with Heimdal.
Lacks of Heimdal support are gss_release_oid(),
gss_str_to_oid() and fail of some tests.
Have a look at the tests in t/ directory too see what tests
fail on Heimdal ( the *.t tests are just skipping them at the moment)
The API presented by this module is a mildly object oriented
reinterpretation of the C API, where opaque C structures are
Perl objects, but the style of function call has been left
mostly untouched. As a result, most routines modify one or
more of the parameters passed to them, reflecting the C
call-by-reference (or call-by-value-return) semantics.
All users of this module are therefore strongly advised to
localize all usage of these routines to minimize pain if and
when the API changes.
=head1 USAGE
This module wraps the GSSAPI C-Bindings. If you are
new to GSSAPI it is a good idea to read RFC2743 and RFC2744,
the documentation requires you to be familar with the concept
and the wordings of GSSAPI programming.
the examples directory holds some working examples of usage:
=over
=item getcred_hostbased.pl
gets a GSSAPI Token for a service specified
on commandline.
(like kgetcred on Heimdal or kvno on MIT)
=item gss-client.pl
a simple GSSAPI TCP client.
=item gss-server.pl
a simple GSSAPI TCP server.
Use both as templates if you need quickhacking
GSSAPI enabeled GSSAPI TCP services.
=back
=head2 GSSAPI::Name
GSSAPI internal representation of principalname
=head3 Methods
=over
=item import( $gssapinameobj, $servicename, $mechnism_oid );
converts stringrepresentation $servicename of service into a GSSAPI internal format
and stores it in $gssapiservicename.
=over
=item input
=over
=item servicename
Scalar value, like 'HTTP@moerbsen.grolmsnet.lan'.
=item mechnism_oid
Chose one of the predefines mechanism OIDs from GSSAPI::OID
=back
=item output
=over
=item $gssapinameobj
GSSAPI internal representation of servicename
=back
=item return value
returns GSSAPI::Status Object
=item Example:
$status = GSSAPI::Name->import( $gssapinameobj,
'HTTP@moerbsen.grolmsnet.lan',
GSSAPI::OID::gss_nt_hostbased_service);
=back
=item display($tname);
converts the GSSAPI internal format into a humanreadable string and stores it into $tname.
=over
=item output
humanreadable string will be stored into $tname.
=item return value
returns GSSAPI::Status Object
=item Example:
my $tname;
$status = $gssapinameobj->display($tname);
die 'hmm, error...' if($status->major != GSS_S_COMPLETE );
print "\n Name is $tname";
=back
=item compare( nameobj, ret)
Wraps gss_compare_name().
=over
=item Input
=over
=item nameobj
the 2nd GSSAPI::Name to be compared to
=back
=item output
=over
=item ret
=over
=item value is non-zero
names refer to same entity
=item value is zero
names refer to different entities.
=back
=back
=item return value
returns GSSAPI::Status Object
=back
=back
=head2 EXPORT
GSS_C_ACCEPT
GSS_C_AF_APPLETALK
GSS_C_AF_BSC
GSS_C_AF_CCITT
GSS_C_AF_CHAOS
GSS_C_AF_DATAKIT
GSS_C_AF_DECnet
GSS_C_AF_DLI
GSS_C_AF_DSS
GSS_C_AF_ECMA
GSS_C_AF_HYLINK
GSS_C_AF_IMPLINK
GSS_C_AF_INET
GSS_C_AF_LAT
GSS_C_AF_LOCAL
GSS_C_AF_NBS
GSS_C_AF_NS
GSS_C_AF_NULLADDR
GSS_C_AF_OSI
GSS_C_AF_PUP
GSS_C_AF_SNA
GSS_C_AF_UNSPEC
GSS_C_AF_X25
GSS_C_ANON_FLAG
GSS_C_BOTH
GSS_C_CALLING_ERROR_MASK
GSS_C_CALLING_ERROR_OFFSET
GSS_C_CONF_FLAG
GSS_C_DELEG_FLAG
GSS_C_EMPTY_BUFFER
GSS_C_GSS_CODE
GSS_C_INDEFINITE
GSS_C_INITIATE
GSS_C_INTEG_FLAG
GSS_C_MECH_CODE
GSS_C_MUTUAL_FLAG
GSS_C_NO_BUFFER
GSS_C_NO_CHANNEL_BINDINGS
GSS_C_NO_CONTEXT
GSS_C_NO_CREDENTIAL
GSS_C_NO_NAME
GSS_C_NO_OID
GSS_C_NO_OID_SET
GSS_C_PROT_READY_FLAG
GSS_C_QOP_DEFAULT
GSS_C_REPLAY_FLAG
GSS_C_ROUTINE_ERROR_MASK
GSS_C_ROUTINE_ERROR_OFFSET
GSS_C_SEQUENCE_FLAG
GSS_C_SUPPLEMENTARY_MASK
GSS_C_SUPPLEMENTARY_OFFSET
GSS_C_TRANS_FLAG
GSS_S_BAD_BINDINGS
GSS_S_BAD_MECH
GSS_S_BAD_NAME
GSS_S_BAD_NAMETYPE
GSS_S_BAD_QOP
GSS_S_BAD_SIG
GSS_S_BAD_STATUS
GSS_S_CALL_BAD_STRUCTURE
GSS_S_CALL_INACCESSIBLE_READ
GSS_S_CALL_INACCESSIBLE_WRITE
GSS_S_COMPLETE
GSS_S_CONTEXT_EXPIRED
GSS_S_CONTINUE_NEEDED
GSS_S_CREDENTIALS_EXPIRED
GSS_S_CRED_UNAVAIL
GSS_S_DEFECTIVE_CREDENTIAL
GSS_S_DEFECTIVE_TOKEN
GSS_S_DUPLICATE_ELEMENT
GSS_S_DUPLICATE_TOKEN
GSS_S_FAILURE
GSS_S_GAP_TOKEN
GSS_S_NAME_NOT_MN
GSS_S_NO_CONTEXT
GSS_S_NO_CRED
GSS_S_OLD_TOKEN
GSS_S_UNAUTHORIZED
GSS_S_UNAVAILABLE
GSS_S_UNSEQ_TOKEN
=head2 Exportable functions
$status = indicate_mechs($oidset)
Example
use GSSAPI qw(:all);
my $oidset;
my $isin = 0;
my $status = indicate_mechs( $oidset );
$status->major == GSS_S_COMPLETE || die 'error';
$status = $oidset->contains( gss_mech_krb5_old, $isin );
$status->major == GSS_S_COMPLETE || die 'error';
if ( $isin ) {
print 'Support of Kerberos 5 old mechtype';
} else {
print 'No Support of Kerberos 5 old mechtype';
}
=head3 Constant OIDs provided:
# Constant OIDs provided:
$oid = gss_nt_user_name;
$oid = gss_nt_machine_uid_name;
$oid = gss_nt_string_uid_name;
$oid = gss_nt_service_name;
$oid = gss_nt_exported_name;
$oid = gss_nt_service_name_v2;
$oid = gss_nt_krb5_name;
$oid = gss_nt_krb5_principal;
$oid = gss_mech_krb5;
$oid = gss_mech_krb5_old;
$oid = gss_mech_spnego;
All other functions are class or instance methods.
=head1 SEE ALSO
GSSAPI::Status(3p)
GSSAPI::OID(3p)
GSSAPI::OID::Set(3p)
=over
=item RFC2743
Generic Security Service API Version 2 : C-bindings
=item RFC2744
Generic Security Service Application Program Interface
=item LWP::Authen::Negotiate
GSSAPI based Authentication plugin for LWP
=item Authen::SASL::Perl::GSSAPI
A SASL adapter, implementing the Authen::SASL interface,
using GSSAPI.pm
=item http://perlgssapi.sourceforge.net/
Holds an actual list of GSSAPI.pm authentication using
modules
=back
perl(1)
=head1 BUGS
More documentation how to use the module has to be added.
=head1 SUPPORT
See our project home at <http://perlgssapi.sourceforge.net/>
Mailinglist perlgssapi-users@lists.sourceforge.net
=head1 AUTHOR
The module ist maintained by
Achim Grolms <perl@grolmsnet.de>
originally written by
Philip Guenther <pguen@cpan.org>
=head1 THANKS TO
=over
=item Philip Guenther
=item Leif Johansson
=item Merijn Broeren
=item Harald Joerg
=item Christopher Odenbach
=item Dax Kelson
=item Marc Lehmann
=item David Leonard
=item Florian Ragwitz
maintainer of Debian package
=item Markus Moeller
Solaris 10 / OpenSolaris support
=back
=head1 COPYRIGHT
Copyright (c) 2006,2008 Achim Grolms. All rights reserved.
This program is free software; you can redistribute it
and/or modify it under the same terms as Perl itself.
Copyright (c) 2000,2001,2005 Philip Guenther. All rights reserved.
This program is free software; you can redistribute it
and/or modify it under the same terms as Perl itself.
=cut