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.\" ========================================================================
.\"
.IX Title "LWP::Authen::Negotiate 3pm"
.TH LWP::Authen::Negotiate 3pm "2020-12-22" "perl v5.32.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.SH "NAME"
LWP::Authen::Negotiate \- GSSAPI based Authentication Plugin for LWP
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&   #! /usr/bin/perl \-w
\&
\&   use strict;
\&   require LWP::UserAgent;
\&
\&   # uncomment if you want see what is going wrong messages
\&   #
\&   #use LWP::Debug qw(+);
\&
\&   my $ua = LWP::UserAgent\->new;
\&   my $response = $ua\->get(\*(Aqhttp://testwurst.grolmsnet.lan:8090/geheim/\*(Aq);
\&   if ($response\->is_success) {
\&      print $response\->content;  # or whatever
\&   }
\&   else {
\&       die $response\->status_line;
\&   }
.Ve
.PP
just install LWP::Authen::Negotiate, \s-1LWP\s0 uses it as authentication plugin.
Use your LWP::UserAgent Scripts as usual.
Authentication is done transparent based on your \s-1GSSAPI\s0
installation (\s-1MIT\s0 Kerberos or Heimdal)
.PP
WWW-Negotiate Webservers are \s-1IIS\s0 or Apache with
mod_auth_kerb for example.
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
To see what ist going on add
.PP
.Vb 1
\&   use LWP::Debug qw(+);
.Ve
.PP
to yor \s-1LWP\s0 using Scripts.
.PP
(e.g. too see what is going wrong with \s-1GSSAPI...\s0)
.SH "DEBUGGING"
.IX Header "DEBUGGING"
To see what ist going on (and going wrong) add
.PP
.Vb 1
\&   use LWP::Debug qw(+);
.Ve
.PP
to yor \s-1LWP\s0 using Scripts.
.PP
(e.g. too see what is going wrong with \s-1GSSAPI...\s0)
.PP
the output will look like this:
.PP
.Vb 12
\&   LWP::UserAgent::new: ()
\&   LWP::UserAgent::request: ()
\&   LWP::UserAgent::send_request: GET http://testwurst.grolmsnet.lan:8090/geheim/
\&   LWP::UserAgent::_need_proxy: Not proxied
\&   LWP::Protocol::http::request: ()
\&   LWP::Protocol::collect: read 478 bytes
\&   LWP::UserAgent::request: Simple response: Unauthorized
\&   LWP::Authen::Negotiate::authenticate: authenticate() called
\&   LWP::Authen::Negotiate::authenticate: target hostname testwurst.grolmsnet.lan
\&   LWP::Authen::Negotiate::authenticate: GSSAPI servicename     HTTP/moerbsen.grolmsnet.lan@GROLMSNET.LAN
\&   LWP::Authen::Negotiate::authenticate:  Miscellaneous failure (see text)
\&   LWP::Authen::Negotiate::authenticate: open(/tmp/krb5cc_1000): file not found
.Ve
.PP
In this case the credentials cache was empty.
Run kinit first ;\-)
.SH "ENVIRONMENT"
.IX Header "ENVIRONMENT"
.IP "\s-1LWP_AUTHEN_NEGOTIATE_DELEGATE\s0" 4
.IX Item "LWP_AUTHEN_NEGOTIATE_DELEGATE"
Define to enable ticket forwarding to webserver.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
.IP "http://www.kerberosprotocols.org/index.php/Draft\-brezak\-spnego\-http\-03.txt" 4
.IX Item "http://www.kerberosprotocols.org/index.php/Draft-brezak-spnego-http-03.txt"
Description of WWW-Negotiate protol
.IP "http://modauthkerb.sourceforge.net/" 4
.IX Item "http://modauthkerb.sourceforge.net/"
the Kerberos and \s-1SPNEGO\s0 Authentication module for Apache mod_auth_kerb
.IP "http://perlgssapi.sourceforge.net/" 4
.IX Item "http://perlgssapi.sourceforge.net/"
Module Homepage
.IP "http://www.kerberosprotocols.org/index.php/Web" 4
.IX Item "http://www.kerberosprotocols.org/index.php/Web"
Sofware and APIs related to WWW-Negotiate
.IP "http://www.grolmsnet.de/kerbtut/" 4
.IX Item "http://www.grolmsnet.de/kerbtut/"
describes how to let mod_auth_kerb play together
with Internet Explorer and Windows2003 Server
.SH "BUGS"
.IX Header "BUGS"
As default Kerberos 5 is selected as \s-1GSSAPI\s0 mechanism.
a later veriosn will make that configureable.
.SH "AUTHOR"
.IX Header "AUTHOR"
Achim Grolms, <achim@grolmsnet.de>
.PP
http://perlgssapi.sourceforge.net/
.PP
Thanks to
.IP "Leif Johansson" 4
.IX Item "Leif Johansson"
who has conributed a lot of code from his
implementation of the module and
send a lot of input, ideas and feedback
.IP "Harald Joerg" 4
.IX Item "Harald Joerg"
helped with Kerberos knowledge and does testing on cygwin
against \s-1IIS\s0 and mod_auth_kerb
.IP "Christopher Odenbach" 4
.IX Item "Christopher Odenbach"
does a lot of testing on Linux and Solaris
.IP "Dax Kelson" 4
.IX Item "Dax Kelson"
does a lot of testing on Linux
.IP "Karsten Kuenne" 4
.IX Item "Karsten Kuenne"
helped with advice
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
Copyright (C) 2006 by Achim Grolms <perl@grolmsnet.de>
.PP
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself, either Perl version 5.8.4 or,
at your option, any later version of Perl 5 you may have available.