]>
Raphaël G. Git Repositories - acme/blob - acme.pm
db1c6d4c6ca1e0cf15209ea26b9ad3dc58a583e2
1 # This file is part of Acmepl
3 # Acmepl is is free software: you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation, either version 3 of the License, or
6 # (at your option) any later version.
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
13 # You should have received a copy of the GNU General Public License
14 # along with this program. If not, see <http://www.gnu.org/licenses/>.
16 # Copyright (C) 2016 - 2017 Raphaël Gertz <acmepl@rapsys.eu>
27 our @ISA = qw(Exporter) ;
28 our @EXPORT_OK = qw(DS CERT_DIR KEY_DIR REQUEST_CSR ACCOUNT_KEY SERVER_KEY SERVER_CRT CONFIG) ;
31 use Carp
qw(carp confess) ;
32 use Date
:: Parse
qw(str2time) ;
33 use Digest
:: SHA
qw(sha256_base64) ;
35 use File
:: Path
qw(make_path) ;
36 use File
:: Slurp
qw(read_file write_file) ;
37 use File
:: Temp
; # qw( :seekable );
38 use IPC
:: System
:: Simple
qw(capturex) ;
39 use JSON
qw(from_json to_json) ;
41 use MIME
:: Base64
qw(encode_base64url encode_base64) ;
43 use POSIX
qw(EXIT_FAILURE) ;
47 #XXX: see https://letsencrypt.github.io/acme-spec/ (probably based on https://ietf-wg-acme.github.io/acme/)
48 #XXX: see jwk rfc http://www.rfc-editor.org/rfc/rfc7517.txt
49 #XXX: see javascript implementation https://github.com/diafygi/gethttpsforfree/blob/gh-pages/js/index.js
56 # Directory for certificates
62 # Directory for pending cache
63 PENDING_DIR
=> 'pending' ,
65 # Request certificate file name
66 REQUEST_CSR
=> 'request.der' ,
68 # Account key file name
69 ACCOUNT_KEY
=> 'account.pem' ,
72 SERVER_KEY
=> 'server.pem' ,
74 # Server public certificate
75 SERVER_CRT
=> 'server.crt' ,
84 ACME_CERT
=> 'https://letsencrypt.org/certs/lets-encrypt-x3-cross-signed.pem' ,
85 ACME_DIR
=> 'https://acme-staging.api.letsencrypt.org/directory' ,
86 ACME_PROD_DIR
=> 'https://acme-v01.api.letsencrypt.org/directory' ,
87 ACME_TERMS
=> 'https://letsencrypt.org/documents/LE-SA-v1.1.1-August-1-2016.pdf' ,
93 CONFIG
=> '/etc/acmepl/config'
103 #XXX: tie to Tie::IxHash to keep a stable ordering of hash keys
112 # kty => uc(KEY_TYPE),
117 # thumbprint => undef
119 tie
( our %jwk , 'Tie::IxHash' , pubkey
=> undef , jwk
=> undef , thumbprint
=> undef );
120 tie
(%{ $jwk { jwk
}}, 'Tie::IxHash' , alg
=> 'RS256' , jwk
=> undef );
121 #XXX: strict ordering only really needed here for thumbprint sha256 digest
122 tie
(%{ $jwk { jwk
}{ jwk
}}, 'Tie::IxHash' , e
=> undef , kty
=> uc ( KEY_TYPE
), n
=> undef );
127 my ( $class , $mail , $debug , $prod , @domains ) = @_ ;
132 # Link self to package
133 bless ( $self , $class );
136 $self ->{ debug
} = $debug ;
139 $self ->{ prod
} = $prod ;
141 # Add extra check to mail validity
142 #XXX: mxcheck fail if there is only a A record on the domain
143 my $ev = Email
:: Valid-
> new (- fqdn
=> 1 , - tldcheck
=> 1 , - mxcheck
=> 1 );
145 # Show error if check fail
146 if (! defined $ev -> address ( $mail )) {
147 map { carp
'failed check: ' . $_ if ( $self ->{ debug
}) } $ev -> details ();
148 confess
'Email::Valid->address failed' ;
152 $self ->{ mail
} = $mail ;
155 my $res = new Net
:: DNS
:: Resolver
();
162 unless (( $tld ) = $_ =~ m/\.(\w+)$/ ) {
163 confess
$_ . ' \' s tld extraction failed' ;
166 # Check if tld exists
167 unless ( Net
:: Domain
:: TLD
:: tld_exists
( $tld )) {
168 confess
$tld . ' tld from ' . $_ . ' don \' t exists' ;
171 # Check if we get dns answer
172 #XXX: only search A type because letsencrypt don't support ipv6 (AAAA) yet
173 unless ( my $rep = $res -> search ( $_ , 'A' )) {
174 confess
'search A record for ' . $_ . ' failed' ;
176 unless ( scalar map { $_ -> type eq 'A' ? 1 : (); } $rep -> answer ) {
177 confess
'search recursively A record for ' . $_ . ' failed' ;
183 @{ $self ->{ domains
}} = @domains ;
185 # Return class reference
189 # Prepare environement
194 make_path
( CERT_DIR
, KEY_DIR
, PENDING_DIR
. '/' . $self ->{ mail
}. '.' .( $self ->{ prod
} ? 'prod' : 'staging' ), { error
=> \
my $err });
197 my ( $file , $msg ) = %$_ ;
198 carp
( $file eq '' ? '' : $file . ': ' ). $msg if ( $self ->{ debug
});
200 confess
'make_path failed' ;
204 $ua = LWP
:: UserAgent-
> new ;
205 $ua -> agent ( __PACKAGE__
. '/' . VERSION
)
211 open ( $_stderr , '>&STDERR' ) or die $! ;
213 close ( STDERR
) or die $! ;
215 open ( STDERR
, '>' , '/dev/null' ) or die $! ;
223 open ( STDERR
, '>&' , $_stderr ) or die $! ;
226 # Generate required keys
230 # Generate account and server key if required
232 # Check key existence
237 #XXX: we drop stderr here because openssl can't be quiet on this command
238 capturex
( 'openssl' , ( 'genrsa' , '-out' , $_ , KEY_SIZE
));
242 } ( KEY_DIR
. DS
. ACCOUNT_KEY
, KEY_DIR
. DS
. SERVER_KEY
);
244 # Extract modulus and publicExponent jwk
245 #XXX: same here we tie to keep ordering
246 tie
(%{ $self ->{ account
}}, 'Tie::IxHash' , %jwk );
248 if ( /^Modulus=([0-9A-F]+)$/ ) {
249 # Extract to binary from hex and convert to base64 url
250 $self ->{ account
}{ jwk
}{ jwk
}{ n
} = encode_base64url
( pack ( "H*" , $1 ) =~ s/^\0+//r );
251 } elsif ( /^publicExponent:\s([0-9]+)\s\(0x[0-1]+\)$/ ) {
252 # Extract to binary from int, trim leading zeros and convert to base64 url
253 chomp ( $self ->{ account
}{ jwk
}{ jwk
}{ e
} = encode_base64url
( pack ( "N" , $1 ) =~ s/^\0+//r ));
255 } capturex
( 'openssl' , ( 'rsa' , '-text' , '-in' , KEY_DIR
. DS
. ACCOUNT_KEY
, '-noout' , '-modulus' ));
259 # Extract account public key
260 $self ->{ account
}{ pubkey
} = join ( '' , map { chomp ; $_ ; } capturex
( 'openssl' , ( 'rsa' , '-in' , KEY_DIR
. DS
. ACCOUNT_KEY
, '-pubout' )));
265 #XXX: convert base64 to base64 url
266 $self ->{ account
}{ thumbprint
} = ( sha256_base64
( to_json
( $self ->{ account
}{ jwk
}{ jwk
})) =~ s/=+\z//r ) =~ tr
[+/][- _
] r
;
269 # Generate certificate request
273 # Openssl config template
274 my $oct = File
:: Temp-
> new ();
276 # Load template from data
277 map { s/__EMAIL_ADDRESS__/$self->{mail}/ ; s/__COMMON_NAME__/$self->{domains}[0]/ ; print $oct $_ ; } < DATA
>;
282 # Append domain names
284 map { print $oct 'DNS.' . $i++ . ' = ' . $_ . " \n " ; } @{ $self ->{ domains
}};
287 capturex
( 'openssl' , ( 'req' , '-new' , '-outform' , 'DER' , '-key' , KEY_DIR
. DS
. SERVER_KEY
, '-config' , $oct -> filename , '-out' , CERT_DIR
. DS
. REQUEST_CSR
));
301 my $dir = $self ->{ prod
} ? ACME_PROD_DIR
: ACME_DIR
;
304 my $req = HTTP
:: Request-
> new ( GET
=> $dir . '?' . $time );
307 my $res = $ua -> request ( $req );
310 unless ( $res -> is_success ) {
311 confess
'GET ' . $dir . '?' . $time . ' failed: ' . $res -> status_line ;
315 $self ->{ nonce
} = $res -> headers ->{ 'replay-nonce' };
317 # Merge uris in self content
318 %$self = ( %$self , %{ from_json
( $res -> content )});
323 my ( $self , $uri , $payload ) = @_ ;
326 my $protected = encode_base64url
( to_json
({ nonce
=> $self ->{ nonce
}}));
329 $payload = encode_base64url
( to_json
( $payload ));
332 my $stf = File
:: Temp-
> new ();
334 # Append protect.payload to stf
335 print $stf $protected . '.' . $payload ;
340 # Generate digest of stf
341 my $signature = encode_base64url
( join ( '' , capturex
( 'openssl' , ( 'dgst' , '-sha256' , '-binary' , '-sign' , KEY_DIR
. DS
. ACCOUNT_KEY
, $stf -> filename ))) =~ s/^\0+//r );
344 my $req = HTTP
:: Request-
> new ( POST
=> $uri );
346 # Set new-reg request content
347 $req -> content ( to_json
({
348 header
=> $self ->{ account
}{ jwk
},
349 protected
=> $protected ,
351 signature
=> $signature
355 my $res = $ua -> request ( $req );
358 if ( defined $res -> headers ->{ 'replay-nonce' }) {
359 $self ->{ nonce
} = $res -> headers ->{ 'replay-nonce' };
366 # Resolve dns and check content
367 #XXX: see https://community.centminmod.com/threads/looks-like-letsencrypt-dns-01-is-ready.5845/#12 for example
369 my ( $self , $domain , $token ) = @_ ;
371 # Generate signature from content
372 my $signature = (( sha256_base64
( $token . '.' . $self ->{ account
}{ thumbprint
})) =~ s/=+\z//r ) =~ tr
[+/][- _
] r
;
375 $domain = '_acme-challenge.' . $domain . '.' ;
378 my $res = new Net
:: DNS
:: Resolver
();
380 # Check if we get dns answer
381 unless ( my $rep = $res -> search ( $domain , 'TXT' )) {
382 carp
'TXT record search for ' . $domain . ' failed' if ( $self ->{ debug
});
385 unless ( scalar map { $_ -> type eq 'TXT' && $_ -> txtdata =~ /^$signature$/ ? 1 : (); } $rep -> answer ) {
386 carp
'TXT record recursive search for ' . $domain . ' failed' if ( $self ->{ debug
});
394 # Get uri and check content
396 my ( $self , $domain , $token ) = @_ ;
399 my $req = HTTP
:: Request-
> new ( GET
=> 'http://' . $domain . '/.well-known/acme-challenge/' . $token );
401 # Load config if available
404 #XXX: use eval to workaround a fatal in from_json
406 # Check that file exists
409 ( $config = read_file
( CONFIG
)) &&
411 ( $config = from_json
( $config )) &&
413 $config ->{ thumbprint
}
416 # Try to write thumbprint
417 write_file
( $config ->{ thumbprint
}, $self ->{ account
}{ thumbprint
});
421 my $res = $ua -> request ( $req );
424 unless ( $res -> is_success ) {
425 carp
'GET http://' . $domain . '/.well-known/acme-challenge/' . $token . ' failed: ' . $res -> status_line if ( $self ->{ debug
});
429 # Handle invalid content
430 unless ( $res -> content =~ /^$token.$self->{account}{thumbprint}\s*$/ ) {
431 carp
'GET http://' . $domain . '/.well-known/acme-challenge/' . $token . ' content match failed: /^' . $token . '.' . $self ->{ account
}{ thumbprint
}. '\s* $/ !~ ' . $res -> content if ( $self ->{ debug
});
440 #XXX: see doc at https://ietf-wg-acme.github.io/acme/#rfc.section.6.3
444 # Post new-reg request
445 #XXX: contact array may contain a tel:+33612345678 for example
446 my $res = $self -> _post ( $self ->{ 'new-reg' }, { resource
=> 'new-reg' , contact
=> [ 'mailto:' . $self ->{ mail
}], agreement
=> ACME_TERMS
});
449 unless ( $res -> is_success || $res -> code eq 409 ) {
450 confess
'POST ' . $self ->{ 'new-reg' }. ' failed: ' . $res -> status_line ;
453 # Update mail informations
454 if ( $res -> code eq 409 ) {
455 # Save registration uri
456 $self ->{ 'reg' } = $res -> headers ->{ location
};
459 #XXX: contact array may contain a tel:+33612345678 for example
460 $res = $self -> _post ( $self ->{ 'reg' }, { resource
=> 'reg' , contact
=> [ 'mailto:' . $self ->{ mail
}]});
463 unless ( $res -> is_success ) {
464 confess
'POST ' . $self ->{ 'reg' }. ' failed: ' . $res -> status_line ;
473 # Create challenges hash
474 %{ $self ->{ challenges
}} = ();
479 # Create or load auth request for each domain
485 my $file = PENDING_DIR
. '/' . $self ->{ mail
}. '.' .( $self ->{ prod
} ? 'prod' : 'staging' ). '/' . $_ ;
487 # Load auth request content or post a new one
488 #TODO: add more check on cache file ???
490 #XXX: use eval to workaround a fatal in from_json
492 # Check that file exists
495 ( $content = read_file
( $file )) &&
497 ( $content = from_json
( $content ))
499 } || ( str2time
( $content ->{ expires
}) <= time ()+ 3600 )
501 # Post new-authz request
502 my $res = $self -> _post ( $self ->{ 'new-authz' }, { resource
=> 'new-authz' , identifier
=> { type
=> 'dns' , value
=> $_ }, existing
=> 'accept' });
505 unless ( $res -> is_success ) {
506 confess
'POST ' . $self ->{ 'new-authz' }. ' for ' . $_ . ' failed: ' . $res -> status_line ;
510 $content = from_json
( $res -> content );
513 unless ( defined $content ->{ identifier
}{ value
} && $content ->{ identifier
}{ value
} eq $_ ) {
514 confess
'domain matching ' . $content ->{ identifier
}{ value
}. ' for ' . $_ . ' failed: ' . $res -> status_line ;
518 unless ( $content ->{ status
} eq 'valid' or $content ->{ status
} eq 'pending' ) {
519 confess
'POST ' . $self ->{ 'new-authz' }. ' for ' . $_ . ' failed: ' . $res -> status_line ;
523 write_file
( $file , to_json
( $content ));
527 %{ $self ->{ challenges
}{ $_ }} = (
528 status
=> $content ->{ status
},
529 expires
=> $content ->{ expires
},
534 if ( $content ->{ status
} eq 'pending' ) {
535 # Extract validation data
536 foreach my $challenge (@{ $content ->{ challenges
}}) {
537 # One test already validated this auth request
538 if ( $self ->{ challenges
}{ $_ }{ status
} eq 'valid' ) {
540 } elsif ( $challenge ->{ status
} eq 'valid' ) {
541 $self ->{ challenges
}{ $_ }{ status
} = $challenge ->{ status
};
543 } elsif ( $challenge ->{ status
} eq 'pending' ) {
546 ( $challenge ->{ type
} =~ /^http-01$/ and $self -> _httpCheck ( $_ , $challenge ->{ token
})) or
547 ( $challenge ->{ type
} =~ /^dns-01$/ and $self -> _dnsCheck ( $_ , $challenge ->{ token
}))
549 # Post challenge request
550 my $res = $self -> _post ( $challenge ->{ uri
}, { resource
=> 'challenge' , keyAuthorization
=> $challenge ->{ token
}. '.' . $self ->{ account
}{ thumbprint
}});
553 unless ( $res -> is_success ) {
554 confess
'POST ' . $challenge ->{ uri
}. ' failed: ' . $res -> status_line ;
558 my $content = from_json
( $res -> content );
561 if ( $content ->{ status
} eq 'valid' ) {
562 $self ->{ challenges
}{ $_ }{ status
} = $content ->{ status
};
563 # Check is still polling
564 } elsif ( $content ->{ status
} eq 'pending' ) {
565 # Add to poll list for later use
566 push (@{ $self ->{ challenges
}{ $_ }{ polls
}}, {
567 type
=> ( split ( /-/ , $challenge ->{ type
}))[ 0 ],
568 status
=> $content ->{ status
},
569 poll
=> $content ->{ uri
}
575 # Check if check is challenge still in pending and no polls
576 if ( $self ->{ challenges
}{ $_ }{ status
} eq 'pending' && scalar @{ $self ->{ challenges
}{ $_ }{ polls
}} == 0 ) {
577 # Loop on all remaining challenges
578 foreach my $challenge (@{ $content ->{ challenges
}}) {
579 # Display help for http-01 check
580 if ( $challenge ->{ type
} eq 'http-01' ) {
581 print STDERR
'Create URI http://' . $_ . '/.well-known/acme-challenge/' . $challenge ->{ token
}. ' with content ' . $challenge ->{ token
}. '.' . $self ->{ account
}{ thumbprint
}. " \n " ;
582 # Display help for dns-01 check
583 } elsif ( $challenge ->{ type
} eq 'dns-01' ) {
584 print STDERR
'Create TXT record _acme-challenge.' . $_ . '. with value ' .((( sha256_base64
( $challenge ->{ token
}. '.' . $self ->{ account
}{ thumbprint
})) =~ s/=+\z//r ) =~ tr
[+/][- _
] r
). " \n " ;
589 } @{ $self ->{ domains
}};
595 while (-- $remaining >= 0 and scalar map { $_ ->{ status
} eq 'valid' ? 1 : (); } values %{ $self ->{ challenges
}}) {
598 # Poll remaining pending
603 # Poll remaining polls
606 my $req = HTTP
:: Request-
> new ( GET
=> $_ ->{ poll
});
609 my $res = $ua -> request ( $req );
612 unless ( $res -> is_success ) {
613 carp
'GET ' . $self ->{ challenges
}{ $_ }{ http_challenge
}. ' failed: ' . $res -> status_line if ( $self ->{ debug
});
617 my $content = from_json
( $res -> content );
620 if ( $content ->{ status
} ne 'pending' ) {
621 $self ->{ challenges
}{ $domain }{ status
} = $content ->{ status
};
623 } @{ $self ->{ challenges
}{ $_ }{ polls
}};
624 } map { $self ->{ challenges
}{ $_ }{ status
} eq 'pending' ? $_ : (); } keys %{ $self ->{ challenges
}};
627 # Load config if available
630 #XXX: use eval to workaround a fatal in from_json
632 # Check that file exists
635 ( $config = read_file
( CONFIG
)) &&
637 ( $config = from_json
( $config )) &&
639 $config ->{ thumbprint
}
642 # Try to write thumbprint
643 write_file
( $config ->{ thumbprint
}, '' );
646 # Stop here with remaining chanllenge
647 if ( scalar map { ! defined $_ ->{ status
} or $_ ->{ status
} ne 'valid' ? 1 : (); } values %{ $self ->{ challenges
}}) {
648 # Deactivate all activated domains
649 #XXX: not implemented by letsencrypt
651 # # Post deactivation request
652 # my $res = $self->_post($self->{challenges}{$_}{http_uri}, {resource => 'authz', status => 'deactivated'});
654 # unless ($res->is_success) {
655 # confess 'POST '.$self->{challenges}{$_}{http_uri}.' failed: '.$res->status_line;
657 #} map { $self->{challenges}{$_}{status} eq 'valid' ? $_ : () } keys %{$self->{challenges}};
659 # Stop here as a domain of csr list failed authorization
660 if ( $self ->{ debug
}) {
661 my @domains = map { ! defined $self ->{ challenges
}{ $_ }{ status
} or $self ->{ challenges
}{ $_ }{ status
} ne 'valid' ? $_ : (); } keys %{ $self ->{ challenges
}};
662 confess
'Fix the challenge' .( scalar @domains > 1 ? 's' : '' ). ' for domain' .( scalar @domains > 1 ? 's' : '' ). ': ' . join ( ', ' , @domains );
674 open ( my $fh , '<' , CERT_DIR
. DS
. REQUEST_CSR
) or die $! ;
677 my $csr = encode_base64url
( join ( '' , < $fh >) =~ s/^\0+//r );
680 close ( $fh ) or die $! ;
682 # Post certificate request
683 my $res = $self -> _post ( $self ->{ 'new-cert' }, { resource
=> 'new-cert' , csr
=> $csr });
686 unless ( $res -> is_success ) {
687 confess
'POST ' . $self ->{ 'new-cert' }. ' failed: ' . $res -> status_line ;
691 open ( $fh , '>' , CERT_DIR
. DS
. SERVER_CRT
) or die $! ;
694 print $fh '-----BEGIN CERTIFICATE-----' . " \n " . encode_base64
( $res -> content ). '-----END CERTIFICATE-----' . " \n " ;
697 my $req = HTTP
:: Request-
> new ( GET
=> ACME_CERT
);
700 $res = $ua -> request ( $req );
703 unless ( $res -> is_success ) {
704 carp
'GET ' . ACME_CERT
. ' failed: ' . $res -> status_line if ( $self ->{ debug
});
708 print $fh $res -> content ;
711 close ( $fh ) or die $! ;
714 carp
'Success, pem certificate in ' . CERT_DIR
. DS
. SERVER_CRT
if ( $self ->{ debug
});
721 # OpenSSL configuration file.
722 # This is mostly being used for generation of certificate requests.
729 distinguished_name
= req_distinguished_name
730 # The extentions to add to the self signed cert
731 x509_extensions
= v3_ca
732 # The extensions to add to a certificate request
733 req_extensions
= v3_req
735 # This sets a mask for permitted string types. There are several options.
736 # utf8only: only UTF8Strings (PKIX recommendation after 2004).
737 # WARNING: ancient versions of Netscape crash on BMPStrings or UTF8Strings.
738 string_mask
= utf8only
740 [ req_distinguished_name
]
742 stateOrProvinceName
= State
or Province Name
743 localityName
= Locality Name
744 organizationName
= Organization Name
745 organizationalUnitName
= Organizational Unit Name
746 commonName
= __COMMON_NAME__
747 emailAddress
= __EMAIL_ADDRESS__
750 basicConstraints
= CA
: false
751 keyUsage
= nonRepudiation
, digitalSignature
, keyEncipherment
752 subjectAltName
= email
: move
753 subjectAltName
= @alt_names
756 subjectKeyIdentifier
= hash
757 authorityKeyIdentifier
= keyid
: always
, issuer
758 basicConstraints
= CA
: true