1 package PVE
::ACME
::DNSChallenge
;
6 use Digest
::SHA
qw(sha256);
13 use base
qw(PVE::ACME::Challenge);
15 my $ACME_PATH = '/usr/share/proxmox-acme/proxmox-acme';
17 sub supported_challenge_types
{
25 my $DNS_API_CHALLENGE_SCHEMA_FN = '/usr/share/proxmox-acme/dns-challenge-schema.json';
28 sub get_supported_plugins
{
30 $plugin_cache = -e
$DNS_API_CHALLENGE_SCHEMA_FN # we allow this to be optional as not all users require
31 ? from_json
(PVE
::Tools
::file_get_contents
($DNS_API_CHALLENGE_SCHEMA_FN))
38 my $plugins = get_supported_plugins
();
41 description
=> "API plugin name",
43 enum
=> [sort keys %$plugins],
47 description
=> 'DNS plugin data. (base64 encoded)',
49 'validation-delay' => {
51 description
=> 'Extra delay in seconds to wait before requesting validation.'
52 .' Allows to cope with a long TTL of DNS records.',
53 # low default, but our bet is that the acme-challenge domain isn't
54 # cached at all, so it hopefully shouldn't run into TTL issues
58 maximum
=> 2 * 24 * 60 * 60,
66 data
=> { optional
=> 1 },
67 nodes
=> { optional
=> 1 },
68 disable
=> { optional
=> 1 },
69 'validation-delay' => { optional
=> 1 },
73 my $proxmox_acme_command = sub {
74 my ($self, $acme, $auth, $data, $action) = @_;
76 die "No plugin data for DNSChallenge\n" if !defined($data->{plugin
});
78 my $alias = $data->{alias
};
79 my $domain = $auth->{identifier
}->{value
};
81 my $challenge = $self->extract_challenge($auth->{challenges
});
82 my $key_auth = $acme->key_authorization($challenge->{token
});
84 my $txtvalue = PVE
::ACME
::encode
(sha256
($key_auth));
85 my $dnsplugin = $data->{plugin
}->{api
};
86 my $plugin_conf_string = $data->{plugin
}->{data
};
88 # for security reasons, we execute the command as nobody
89 # we can't verify that the code of the DNSPlugins are harmless.
90 my $cmd = ["setpriv", "--reuid", "nobody", "--regid", "nogroup", "--clear-groups", "--reset-env", "--"];
92 # The order of the parameters passed to proxmox-acme is important
93 # proxmox-acme <setup|teardown> $plugin <$domain|$alias> $txtvalue [$plugin_conf_string]
94 push @$cmd, "/bin/bash", $ACME_PATH, $action, $dnsplugin;
100 my $input = "$txtvalue\n";
101 $input .= "$plugin_conf_string\n" if $plugin_conf_string;
103 PVE
::Tools
::run_command
($cmd, input
=> $input);
105 $data->{url
} = $challenge->{url
};
111 my ($self, $acme, $auth, $data) = @_;
113 my $domain = $proxmox_acme_command->($self, $acme, $auth, $data, 'setup');
114 print "Add TXT record: _acme-challenge.$domain\n";
116 my $delay = $data->{plugin
}->{'validation-delay'} // 30;
118 print "Sleeping $delay seconds to wait for TXT record propagation\n";
119 sleep($delay); # don't care for EINTR
124 my ($self, $acme, $auth, $data) = @_;
126 my $domain = $proxmox_acme_command->($self, $acme, $auth, $data, 'teardown');
127 print "Remove TXT record: _acme-challenge.$domain\n";