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Future proofing on Let's Encrypt

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Přemysl Eric Janouch 2017-05-16 20:13:29 +02:00
parent 25b48baa79
commit 952d12825c
Signed by: p
GPG Key ID: B715679E3A361BE6
1 changed files with 10 additions and 6 deletions
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acme-tinier.pl
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@ -2,6 +2,9 @@
# This is a simplified rewrite of acme-tiny in Perl, since Python 3 is 125 MiB
# but Perl is everywhere and JSON::PP mostly in default installations.
# Depends on curl and openssl.
#
# TODO: eventually the ACME protocol will stabilize:
# https://github.com/ietf-wg-acme/acme/blob/master/draft-ietf-acme-acme.md
use strict;
use warnings;
use MIME::Base64 qw(encode_base64 encode_base64url);
@ -46,7 +49,7 @@ sub communicate {
return $resp;
}
# Use cURL to download a file over HTTPS but parse it ourselves
# Use cURL to download a file over HTTPS but parse it ourselves (quite silly)
sub get {
my ($url, $data) = @_;
my @args = ('curl', '-sS', '-D-', '-H', 'Expect:');
@ -55,7 +58,7 @@ sub get {
die 'cannot download' if $? >> 8;
my ($code, $headers, $body) =
$resp =~ m#\AHTTP/\d\.\d (\d+) .*?\r\n(.*?)\r\n\r\n(.*)#sm;
return ($code, $body, { $headers =~ /(\S+?): (.*)$/mg })
return ($code, $body, { $headers =~ /(\S+?): (.*)\r\n/mg })
}
# Make a signed request to an ACME endpoint
@ -87,11 +90,12 @@ push @domains, map { substr $_, 4 } grep { /^DNS:/ } split(/, /)
for $csr =~ /X509v3 Subject Alternative Name: \n +([^\n]+)\n/g;
# Get certificate domains and expiration
# FIXME: don't hardcode the agreement, that may stop working
my ($code, $result) = send_signed("$ca/acme/new-reg", {
my ($code, $result, $headers) = get "$ca/terms";
($code, $result) = send_signed("$ca/acme/new-reg", {
resource => 'new-reg',
agreement => 'https://letsencrypt.org/documents/'
. 'LE-SA-v1.1.1-August-1-2016.pdf'
agreement => ($code == 302 && exists $headers->{Location})
? $headers->{Location}
: 'https://letsencrypt.org/documents/LE-SA-v1.1.1-August-1-2016.pdf'
});
die "cannot register: $code" if $code != 201 && $code != 409;