Provided by: libprotocol-acme-perl_1.01-3_all bug

NAME

       Protocol::ACME - Interface to the Let's Encrypt ACME API

VERSION

       Version 1.01

SYNOPSIS

        use Protocol::ACME;

        my @names = qw( www.example.com cloud.example.com );

        my $challenges = {
                           'www.example.com'   => Protocol::ACME::Challenge::SimpleSSH->new(
                             { ssh_host => "host1", www_root => "~/www" }
                           ),
                          'cloud.example.com' => Protocol::ACME::Challenge::SimpleSSH->new(
                            { ssh_host => "home2", www_root => "/opt/local/www/htdocs" }
                          )
                        };

        eval
        {
          my $acme = Protocol::ACME->new( host               => $host,
                                          account_key        => $account_key_pem_or_der,
                                        );

          $acme->directory();
          $acme->register();
          $acme->accept_tos();

          for my $domain ( @names )
          {
            $acme->authz( $domain );
            $acme->handle_challenge( $challenges->{$domain} );
            $acme->check_challenge();
            $acme->cleanup_challenge( $challenges->{$domain} );
          }

          my $cert = $acme->sign( $csr_file );
        };
        if ( $@ )
        {
          die if !UNIVERSAL::isa($@, 'Protocol::ACME::Exception');
          die "Error occurred: Status: $@->{status},
                               Detail: $@->{detail},
                               Type:   $@->{type}\n";
        }
        else
        {
          # do something appropriate with the DER encoded cert
          print "Success\n";
        }

DESCRIPTION

       The "Protocol::ACME" is a class implementing an interface for the Let's Encrypt ACME API.

       The class handles the protocol details behind provisioning a Let's Encrypt certificate.

CONSTRUCTOR METHODS

       The following constructor methods are available:

       $acme = Protcol::ACME->new( %options )
           This method constructs a new "Protocl::ACME" object and returns it.  Key/value pair
           arguments may be provided to set up the initial state.  The may be passed in as a hash
           or a hashref. The following options correspond to attribute methods described below.
           Items marked with a * are required.

              KEY                     DEFAULT
              -----------             --------------------
              *host                   undef
              account_key             undef
              openssl                 undef
              ua                      HTTP::Tiny->new()
              loglevel                error
              debug                   0
              mailto                  undef

           host: The API end point to connect to.  This will generally be
           acme-staging.api.letsencrypt.org or acme-v01.api.letsencrypt.org

           account_key: The account private key in a scalar ref or filename.  See
           "$self-"account_key> for details on this argument.

           openssl: The path to openssl.  If this option is used a local version of the openssl
           binary will be used for crypto operations rather than "Crypt::OpenSSL::RSA".

           ua: An HTTP::Tiny object customized as you see fit

           loglevel: Set the loglevel to one of the "Log::Any" values.

           debug: If set to non-zero this is a shortcut for "loglevel =" debug>

           mailto: This should be the email address that you want associated with your account.
           This is used my Let's Encrypt for expiration notification.

   METHODS
       account_key( $key_filename )
       account_key( \$buffer )
       account_key( \%explicit_args )
           "account_key" will load a the private account key if it was not already loaded when
           the "pProtocol::ACME" object was constructed.  There are three ways to call this:

           If the arg is a SCALAR it is assumed to be the filename of the key.  "account_key"
           will throw an error if there are problems reading the file.

           If the arg is a SCALAR reference it is assumed to be a buffer that contains the KEY.

           If the arg is a HASH reference it contains named arguments.  The arguments are:

              KEY          DEFAUL        DESC
              -----------  -----------   -------------------
              filename     undef         The key Filename
              buffer       undef         Buffer containing the key
              format       undef         Explicitly state the format ( DER | PEM )

           If both "filename" and "buffer" are set the "buffer" argument will be ignored.

           If the format is not explcitly set "Protocol::ACME" will look at the key and try and
           determine what the format it.

       load_key_from_disk( $key_path )
           DEPRECATED

           Load a key from disk.  Currently the key needs to be unencrypted.  Callbacks for
           handling password protected keys are still to come.

       directory()
           Loads the directory from the ACME host.  This call must be made first before any other
           calls to the API in order the bootstrap the API resource list.

       register( %args )
           Call the new-reg resource and create an account associated with the loaded account
           key.  If that key has already been registered this method will gracefully and silently
           handle that.

           Arguments that can be passed in:

              KEY                     DEFAULT
              -----------             --------------------
              mailto                  undef

           mailto: See "new" for a desciption.  This will override the value passed to new if
           any.

       accept_tos()
           In order to use the Let's Encrypt service, the account needs to accept the Terms of
           Service.  This is provided in a link header in response to the new-reg ( or reg )
           resource call.  If the TOS have already been accepted as indicated by the reg
           structure returned by the API this call will be a noop.

       authz( $domain )
           "authz" needs to be called for each domain ( called identifiers in ACME speak ) in the
           certificate.  This included the domain in the subject as well as the Subject Alternate
           Name (SAN) fields.  Each call to "authz" will result in a challenge being issued from
           Let's Encrypt.  These challenges need to be handled individually.

       handle_challenge( $challenge_object )
           "handle_challenge" is called for each challenge issued by "authz".  The challenge
           object must be a subclass of "Protocol::ACME::Challenge" which implements a 'handle'
           method.  This objects handle method will be passed three arguments and is expected to
           fulfill the preconditions for the chosen challenge.  The three areguments are:

             fingerprint: the sha256 hex digest of the account key
             token: the challenge token
             url: the url returned by the challenge

           Fully describing how to handle every challenge type of out of the scope of this
           documentation ( at least for now ).  Two challenge classes have been included for
           reference:

           "Protocol::ACME::Challenge::SimpleSSH" is initialized with the ssh host name and the
           www root for the web server for the http-01 challenge.  It will ssh to the host and
           create the file in the correct location for challenge fulfillment.

           "Protocol::ACME::Challenge::LocalFile" is initialized with just the www root for the
           web server for the http-01 challenge.  It will simply create the challenge file in the
           correct place on the local filesystem.

           "Protocol::ACME::Challenge::Manual" is intended to be run in an interactive manner and
           will stop and prompt the user with the relevant information so they can fulfill the
           challenge manually.

           but below is an example for handling the simpleHTTP ( http-01 ) challenge.

       check_challenge()
           Called after "handle_challenge".  This will poll the challenge status resource and
           will return when the state changes from 'pending'.

       cleanup_challenge()
           Called after "check_challenge" to remove the challenge files.

       $cert = sign( $csr_filename )
       $cert = sign( \$buffer )
       $cert = sign( \%explicit_args )
           Call "sign" after the challenge for each domain ( itentifier ) has been fulfilled.
           There are three ways to call this:

           If the arg is a SCALAR it is assumed to be the filename of the CSR.  "sign" will throw
           an error if there are problems reading the file.

           If the arg is a SCALAR reference it is assumed to be a buffer that contains the CSR.

           If the arg is a HASH reference it contains named arguments.  The arguments are:

              KEY          DEFAUL        DESC
              -----------  -----------   -------------------
              filename     undef         The CSR Filename
              buffer       undef         Buffer containing the CSR
              format       undef         Explicitly state the format ( DER | PEM )

           If both "filename" and "buffer" are set the "buffer" argument will be ignored.

           If the format is not explcitly set Protocol::ACME will look at the CSR and try and
           determine what the format it.

           On success "Protocol::ACME" will return the DER encoded signed certificate.

       $cert_chain = chain()
           After "sign" has been called and a cert successfully created, "chain" will fetch and
           return the DER encoded certificate issuer.

       revoke( $certfile )
           Call "revoke" to revoke an already issued certificate. $certfile must point the a DER
           encoded form of the certificate.

       recovery_key()
           LE does not yet support recovery keys.  This method will die when called.

AUTHOR

       Stephen Ludin, "<sludin at ludin.org>"

BUGS

       Please report any bugs or feature requests to "bug-protocol-acme at rt.cpan.org", or
       through the web interface at
       <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Protocol-ACME>.  I will be notified, and
       then you'll automatically be notified of progress on your bug as I make changes.

REPOSITORY

       https://github.com/sludin/Protocol-ACME

SUPPORT

       You can find documentation for this module with the perldoc command.

           perldoc Protocol::ACME

       You can also look for information at:

       ·   RT: CPAN's request tracker (report bugs here)

           <http://rt.cpan.org/NoAuth/Bugs.html?Dist=Protocol-ACME>

       ·   AnnoCPAN: Annotated CPAN documentation

           <http://annocpan.org/dist/Protocol-ACME>

       ·   CPAN Ratings

           <http://cpanratings.perl.org/d/Protocol-ACME>

       ·   Search CPAN

           <http://search.cpan.org/dist/Protocol-ACME/>

CONTRIBUTORS

       Felipe Gasper, "<felipe at felipegasper.com>"

ACKNOWLEDGEMENTS

LICENSE AND COPYRIGHT

       Copyright 2015 Stephen Ludin.

       This program is free software; you can redistribute it and/or modify it under the terms of
       the the Artistic License (2.0). You may obtain a copy of the full license at:

       <http://www.perlfoundation.org/artistic_license_2_0>

       Any use, modification, and distribution of the Standard or Modified Version 1.01
       distributing the Package, you accept this license. Do not use, modify, or distribute the
       Package, if you do not accept this license.

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       than you, you are nevertheless required to ensure that your Modified Version complies with
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       or logo of the Copyright Holder.

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       respect to any patent claims licensable by the Copyright Holder that are necessarily
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