src/PVE/ACME/DNSChallenge.pm

   1 package PVE::ACME::DNSChallenge;
   2
   3 use strict;
   4 use warnings;
   5
   6 use Digest::SHA qw(sha256);
   7 use PVE::Tools;
   8
   9 use base qw(PVE::ACME::Challenge);
  10
  11 my $ACME_PATH = '/usr/share/proxmox-acme/proxmox-acme';
  12
  13 sub supported_challenge_types {
  14     return ["dns-01"];
  15 }
  16
  17 sub type {
  18     return 'dns';
  19 }
  20
  21 # describe the data schema of the supported plugins, e.g.:
  22 #    'dnsprovider' => {
  23 #       name => 'Full name of Plugin',
  24 #       fields => {
  25 #           'FOO_API_KEY' => {
  26 #               description => "The API key",
  27 #               default => "none",
  28 #               optional => 1,
  29 #               type => 'string',
  30 #           },
  31 #           # ...
  32 #       },
  33 #    },
  34 my $plugins = {
  35     'acmedns' => {},
  36     'acmeproxy' => {},
  37     'active24' => {
  38         name => 'Active24',
  39         fields => {
  40             'ACTIVE24_Token' => {
  41                 description => "The API key",
  42                 type => 'string',
  43             },
  44         },
  45     },
  46     'ad' => {
  47         name => 'Alwaysdata',
  48         fields => {
  49             'AD_API_KEY' => {
  50                 description => "The API key",
  51                 type => 'string',
  52             },
  53         },
  54     },
  55     'ali' => {
  56         name => 'Alibaba Cloud DNS',
  57         fields => {
  58             'Ali_API' => {
  59                 description => 'The API endpoint',
  60                 default => "https://alidns.aliyuncs.com/",
  61                 type => 'string',
  62                 optional => 1,
  63             },
  64             'Ali_Key' => {
  65                 description => 'The API Key',
  66                 type => 'string',
  67             },
  68             'Ali_Secret' => {
  69                 description => 'The API Secret',
  70                 type => 'string',
  71             },
  72         },
  73     },
  74     'autodns' => {},
  75     'aws' => {
  76         name => 'Amazon Route53 (AWS)',
  77         fields => {
  78             'AWS_ACCESS_KEY_ID' => {
  79                 name => 'ACCESS_KEY_ID',
  80                 description => 'The AWS access-key ID',
  81                 type => 'string',
  82             },
  83             'AWS_SECRET_ACCESS_KEY' => {
  84                 name => 'SECRET_ACCESS_KEY',
  85                 description => 'The AWS access-key secret',
  86                 type => 'string',
  87             },
  88         },
  89     },
  90     'azure' => {},
  91     'cf' => {
  92         name => 'Cloudflare Managed DNS',
  93         description => 'Either provide global account key and email, or CF API token and Account ID.',
  94         fields => {
  95             'CF_Key' => {
  96                 description => 'The Cloudflare Global API Key',
  97                 type => 'string',
  98             },
  99             'CF_Email' => {
 100                 description => 'The Cloudflare Account EMail-Address',
 101                 type => 'string',
 102             },
 103             'CF_Token' => {
 104                 description => 'The new Cloudflare API Token',
 105                 type => 'string',
 106             },
 107             'CF_Account_ID' => {
 108                 description => 'The new Cloudflare API Account ID',
 109                 type => 'string',
 110             },
 111             'CF_Zone_ID' => {
 112                 description => 'For Zone restricted API Token',
 113                 type => 'string',
 114             },
 115         },
 116     },
 117     'clouddns' => {},
 118     'cloudns' => {},
 119     'cn' => {},
 120     'conoha' => {},
 121     'constellix' => {},
 122     'cx' => {},
 123     'cyon' => {},
 124     'da' => {},
 125     'ddnss' => {},
 126     'desec' => {},
 127     'df' => {},
 128     'dgon' => {},
 129     'dnsimple' => {},
 130     'do' => {},
 131     'doapi' => {},
 132     'domeneshop' => {},
 133     'dp' => {},
 134     'dpi' => {},
 135     'dreamhost' => {},
 136     'duckdns' => {},
 137     'durabledns' => {},
 138     'dyn' => {},
 139     'dynu' => {},
 140     'dynv6' => {},
 141     'easydns' => {},
 142     'euserv' => {},
 143     'exoscale' => {},
 144     'freedns' => {},
 145     'gandi_livedns' => {},
 146     'gcloud' => {},
 147     'gd' => {
 148         name => 'GoDaddy',
 149         fields => {
 150             'GD_Key' => {
 151                 description => 'The GoDaddy API Key',
 152                 type => 'string',
 153             },
 154             'GD_Secret' => {
 155                 description => 'The GoDaddy API Secret',
 156                 type => 'string',
 157             },
 158         },
 159     },
 160     'gdnsdk' => {},
 161     'he' => {},
 162     'hexonet' => {},
 163     'hostingde' => {},
 164     'infoblox' => {},
 165     'internetbs' => {},
 166     'inwx' => {},
 167     'ispconfig' => {},
 168     'jd' => {},
 169     'kas' => {},
 170     'kinghost' => {},
 171     'knot' => {},
 172     'leaseweb' => {},
 173     'lexicon' => {},
 174     'linode' => {},
 175     'linode_v4' => {},
 176     'loopia' => {},
 177     'lua' => {},
 178     'maradns' => {},
 179     'me' => {},
 180     'miab' => {},
 181     'misaka' => {},
 182     'myapi' => {},
 183     'mydevil' => {},
 184     'mydnsjp' => {},
 185     'namecheap' => {},
 186     'namecom' => {},
 187     'namesilo' => {},
 188     'nederhost' => {},
 189     'neodigit' => {},
 190     'netcup' => {},
 191     'nic' => {},
 192     'nsd' => {},
 193     'nsone' => {},
 194     'nsupdate' => {},
 195     'nw' => {},
 196     'one' => {},
 197     'online' => {},
 198     'openprovider' => {},
 199     'opnsense' => {},
 200     'ovh' => {
 201         name => 'OVH',
 202         fields => {
 203             'OVH_END_POINT' => {
 204                 description => "The OVH endpoint",
 205                 default => "ovh-eu",
 206                 optional => 1,
 207                 type => 'string',
 208             },
 209             'OVH_AK' => {
 210                 description => "The application key.",
 211                 type => 'string',
 212             },
 213             'OVH_AS' => {
 214                 description => "The application secret.",
 215                 type => 'string',
 216             },
 217             'OVH_CK' => {
 218                 description => "The consumer key.",
 219                 optional => 1,
 220                 type => 'string',
 221             },
 222         },
 223     },
 224     'pdns' => {
 225         name => 'PowerDNS server',
 226         fields => {
 227             'PDNS_Url' => {
 228                 description => "The PowerDNS API endpoint.",
 229                 type => 'string',
 230             },
 231             'PDNS_ServerId'=> {
 232                 type => 'string',
 233             },
 234             'PDNS_Token'=> {
 235                 type => 'string',
 236             },
 237             'PDNS_Ttl'=> {
 238                 type => 'integer',
 239             },
 240         },
 241     },
 242     'pleskxml' => {},
 243     'pointhq' => {},
 244     'rackspace' => {},
 245     'rcode0' => {},
 246     'regru' => {},
 247     'schlundtech' => {},
 248     'selectel' => {},
 249     'servercow' => {},
 250     'tele3' => {},
 251     'ultra' => {},
 252     'unoeuro' => {},
 253     'variomedia' => {},
 254     'vscale' => {},
 255     'vultr' => {},
 256     'yandex' => {},
 257     'zilore' => {},
 258     'zone' => {},
 259     'zonomi' => {},
 260 };
 261
 262 sub get_supported_plugins {
 263     return $plugins;
 264 }
 265
 266 sub properties {
 267     return {
 268         api => {
 269             description => "API plugin name",
 270             type => 'string',
 271             enum => [sort keys %$plugins],
 272         },
 273         data => {
 274             type => 'string',
 275             description => 'DNS plugin data. (base64 encoded)',
 276         },
 277         'validation-delay' => {
 278             type => 'integer',
 279             description => 'Extra delay in seconds to wait before requesting validation.'
 280                 .' Allows to cope with a long TTL of DNS records.',
 281             # low default, but our bet is that the acme-challenge domain isn't
 282             # cached at all, so it hopefully shouldn't run into TTL issues
 283             default => 30,
 284             optional => 1,
 285             minimum => 0,
 286             maximum => 2 * 24 * 60 * 60,
 287         }
 288     };
 289 }
 290
 291 sub options {
 292     return {
 293         api => {},
 294         data => { optional => 1 },
 295         nodes => { optional => 1 },
 296         disable => { optional => 1 },
 297         'validation-delay' => { optional => 1 },
 298     };
 299 }
 300
 301 my $proxmox_acme_command = sub {
 302     my ($self, $acme, $auth, $data, $action) = @_;
 303
 304     die "No plugin data for DNSChallenge\n" if !defined($data->{plugin});
 305
 306     my $alias = $data->{alias};
 307     my $domain = $auth->{identifier}->{value};
 308
 309     my $challenge = $self->extract_challenge($auth->{challenges});
 310     my $key_auth = $acme->key_authorization($challenge->{token});
 311
 312     my $txtvalue = PVE::ACME::encode(sha256($key_auth));
 313     my $dnsplugin = $data->{plugin}->{api};
 314     my $plugin_conf_string = $data->{plugin}->{data};
 315
 316     # for security reasons, we execute the command as nobody
 317     # we can't verify that the code of the DNSPlugins are harmless.
 318     my $cmd = ["setpriv", "--reuid", "nobody", "--regid", "nogroup", "--clear-groups", "--reset-env", "--"];
 319
 320     # The order of the parameters passed to proxmox-acme is important
 321     # proxmox-acme <setup|teardown> $plugin <$domain|$alias> $txtvalue [$plugin_conf_string]
 322     push @$cmd, "/bin/bash", $ACME_PATH, $action, $dnsplugin;
 323     if ($alias) {
 324         push @$cmd, $alias;
 325     } else {
 326         push @$cmd, $domain;
 327     }
 328     my $input = "$txtvalue\n";
 329     $input .= "$plugin_conf_string\n" if $plugin_conf_string;
 330
 331     PVE::Tools::run_command($cmd, input => $input);
 332
 333     $data->{url} = $challenge->{url};
 334
 335     return $domain;
 336 };
 337
 338 sub setup {
 339     my ($self, $acme, $auth, $data) = @_;
 340
 341     my $domain = $proxmox_acme_command->($self, $acme, $auth, $data, 'setup');
 342     print "Add TXT record: _acme-challenge.$domain\n";
 343
 344     # FIXME: probe ourself for propagation of TXT record, while not 100%
 345     # failsafe it's good enough of a heuristic to do away with fixed sleep
 346     # intervalls - original acme.sh employs that heuristic too.
 347     my $delay = $data->{'validation-delay'} // 30;
 348     if ($delay > 0) {
 349         print "Sleeping $delay seconds to wait for TXT record propagation\n";
 350         sleep($delay); # don't care for EINTR
 351     }
 352 }
 353
 354 sub teardown {
 355     my ($self, $acme, $auth, $data) = @_;
 356
 357     my $domain = $proxmox_acme_command->($self, $acme, $auth, $data, 'teardown');
 358     print "Remove TXT record: _acme-challenge.$domain\n";
 359 }
 360
 361 1;