src/Module/Xrd.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2023, the Friendica project
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as
   9  * published by the Free Software Foundation, either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 namespace Friendica\Module;
  23
  24 use Friendica\BaseModule;
  25 use Friendica\Core\System;
  26 use Friendica\DI;
  27 use Friendica\Model\Photo;
  28 use Friendica\Model\User;
  29 use Friendica\Network\HTTPException\NotFoundException;
  30 use Friendica\Protocol\ActivityNamespace;
  31 use Friendica\Protocol\Salmon;
  32 use Friendica\Util\XML;
  33
  34 /**
  35  * Prints responses to /.well-known/webfinger  or /xrd requests
  36  */
  37 class Xrd extends BaseModule
  38 {
  39         protected function rawContent(array $request = [])
  40         {
  41                 // @TODO: Replace with parameter from router
  42                 if (DI::args()->getArgv()[0] == 'xrd') {
  43                         if (empty($_GET['uri'])) {
  44                                 return;
  45                         }
  46
  47                         $uri = urldecode(trim($_GET['uri']));
  48                         if (strpos($_SERVER['HTTP_ACCEPT'] ?? '', 'application/jrd+json') !== false)  {
  49                                 $mode = Response::TYPE_JSON;
  50                         } else {
  51                                 $mode = Response::TYPE_XML;
  52                         }
  53                 } else {
  54                         if (empty($_GET['resource'])) {
  55                                 return;
  56                         }
  57
  58                         $uri = urldecode(trim($_GET['resource']));
  59                         if (strpos($_SERVER['HTTP_ACCEPT'] ?? '', 'application/xrd+xml') !== false)  {
  60                                 $mode = Response::TYPE_XML;
  61                         } else {
  62                                 $mode = Response::TYPE_JSON;
  63                         }
  64                 }
  65
  66                 if (substr($uri, 0, 4) === 'http') {
  67                         $name = ltrim(basename($uri), '~');
  68                 } else {
  69                         $local = str_replace('acct:', '', $uri);
  70                         if (substr($local, 0, 2) == '//') {
  71                                 $local = substr($local, 2);
  72                         }
  73
  74                         $name = substr($local, 0, strpos($local, '@'));
  75                 }
  76
  77                 if ($name == User::getActorName()) {
  78                         $owner = User::getSystemAccount();
  79                         if (empty($owner)) {
  80                                 throw new NotFoundException('System account was not found. Please setup your Friendica installation properly.');
  81                         }
  82                         $this->printSystemJSON($owner);
  83                 } else {
  84                         $owner = User::getOwnerDataByNick($name);
  85                         if (empty($owner)) {
  86                                 DI::logger()->notice('No owner data for user id', ['uri' => $uri, 'name' => $name]);
  87                                 throw new NotFoundException('Owner was not found for user->uid=' . $name);
  88                         }
  89
  90                         $alias = str_replace('/profile/', '/~', $owner['url']);
  91
  92                         $avatar = Photo::selectFirst(['type'], ['uid' => $owner['uid'], 'profile' => true]);
  93                 }
  94
  95                 if (empty($avatar)) {
  96                         $avatar = ['type' => 'image/jpeg'];
  97                 }
  98
  99                 if ($mode == Response::TYPE_XML) {
 100                         $this->printXML($alias, $owner, $avatar);
 101                 } else {
 102                         $this->printJSON($alias, $owner, $avatar);
 103                 }
 104         }
 105
 106         private function printSystemJSON(array $owner)
 107         {
 108                 $baseURL = $this->baseUrl;
 109                 $json = [
 110                         'subject' => 'acct:' . $owner['addr'],
 111                         'aliases' => [$owner['url']],
 112                         'links'   => [
 113                                 [
 114                                         'rel'  => 'http://webfinger.net/rel/profile-page',
 115                                         'type' => 'text/html',
 116                                         'href' => $owner['url'],
 117                                 ],
 118                                 [
 119                                         'rel'  => 'self',
 120                                         'type' => 'application/activity+json',
 121                                         'href' => $owner['url'],
 122                                 ],
 123                                 [
 124                                         'rel'      => 'http://ostatus.org/schema/1.0/subscribe',
 125                                         'template' => $baseURL . '/contact/follow?url={uri}',
 126                                 ],
 127                                 [
 128                                         'rel'  => ActivityNamespace::FEED,
 129                                         'type' => 'application/atom+xml',
 130                                         'href' => $owner['poll'] ?? $baseURL,
 131                                 ],
 132                                 [
 133                                         'rel'  => 'salmon',
 134                                         'href' => $baseURL . '/salmon/' . $owner['nickname'],
 135                                 ],
 136                                 [
 137                                         'rel'  => 'http://microformats.org/profile/hcard',
 138                                         'type' => 'text/html',
 139                                         'href' => $baseURL . '/hcard/' . $owner['nickname'],
 140                                 ],
 141                                 [
 142                                         'rel'  => 'http://joindiaspora.com/seed_location',
 143                                         'type' => 'text/html',
 144                                         'href' => $baseURL,
 145                                 ],
 146                         ]
 147                 ];
 148                 header('Access-Control-Allow-Origin: *');
 149                 System::jsonExit($json, 'application/jrd+json; charset=utf-8');
 150         }
 151
 152         private function printJSON(string $alias, array $owner, array $avatar)
 153         {
 154                 $baseURL = $this->baseUrl;
 155
 156                 $json = [
 157                         'subject' => 'acct:' . $owner['addr'],
 158                         'aliases' => [
 159                                 $alias,
 160                                 $owner['url'],
 161                         ],
 162                         'links'   => [
 163                                 [
 164                                         'rel'  => ActivityNamespace::DFRN ,
 165                                         'href' => $owner['url'],
 166                                 ],
 167                                 [
 168                                         'rel'  => ActivityNamespace::FEED,
 169                                         'type' => 'application/atom+xml',
 170                                         'href' => $owner['poll'],
 171                                 ],
 172                                 [
 173                                         'rel'  => 'http://webfinger.net/rel/profile-page',
 174                                         'type' => 'text/html',
 175                                         'href' => $owner['url'],
 176                                 ],
 177                                 [
 178                                         'rel'  => 'self',
 179                                         'type' => 'application/activity+json',
 180                                         'href' => $owner['url'],
 181                                 ],
 182                                 [
 183                                         'rel'  => 'http://microformats.org/profile/hcard',
 184                                         'type' => 'text/html',
 185                                         'href' => $baseURL . '/hcard/' . $owner['nickname'],
 186                                 ],
 187                                 [
 188                                         'rel'  => 'http://webfinger.net/rel/avatar',
 189                                         'type' => $avatar['type'],
 190                                         'href' => User::getAvatarUrl($owner),
 191                                 ],
 192                                 [
 193                                         'rel'  => 'http://joindiaspora.com/seed_location',
 194                                         'type' => 'text/html',
 195                                         'href' => $baseURL,
 196                                 ],
 197                                 [
 198                                         'rel'  => 'salmon',
 199                                         'href' => $baseURL . '/salmon/' . $owner['nickname'],
 200                                 ],
 201                                 [
 202                                         'rel'  => 'http://salmon-protocol.org/ns/salmon-replies',
 203                                         'href' => $baseURL . '/salmon/' . $owner['nickname'],
 204                                 ],
 205                                 [
 206                                         'rel'  => 'http://salmon-protocol.org/ns/salmon-mention',
 207                                         'href' => $baseURL . '/salmon/' . $owner['nickname'] . '/mention',
 208                                 ],
 209                                 [
 210                                         'rel'      => 'http://ostatus.org/schema/1.0/subscribe',
 211                                         'template' => $baseURL . '/contact/follow?url={uri}',
 212                                 ],
 213                                 [
 214                                         'rel'  => 'magic-public-key',
 215                                         'href' => 'data:application/magic-public-key,' . Salmon::salmonKey($owner['spubkey']),
 216                                 ],
 217                                 [
 218                                         'rel'  => 'http://purl.org/openwebauth/v1',
 219                                         'type' => 'application/x-zot+json',
 220                                         'href' => $baseURL . '/owa',
 221                                 ],
 222                         ],
 223                 ];
 224
 225                 header('Access-Control-Allow-Origin: *');
 226                 System::jsonExit($json, 'application/jrd+json; charset=utf-8');
 227         }
 228
 229         private function printXML(string $alias, array $owner, array $avatar)
 230         {
 231                 $baseURL = $this->baseUrl;
 232
 233                 $xmlString = XML::fromArray([
 234                         'XRD' => [
 235                                 '@attributes' => [
 236                                         'xmlns'    => 'http://docs.oasis-open.org/ns/xri/xrd-1.0',
 237                                 ],
 238                                 'Subject' => 'acct:' . $owner['addr'],
 239                                 '1:Alias' => $owner['url'],
 240                                 '2:Alias' => $alias,
 241                                 '1:link' => [
 242                                         '@attributes' => [
 243                                                 'rel'  => 'http://purl.org/macgirvin/dfrn/1.0',
 244                                                 'href' => $owner['url']
 245                                         ]
 246                                 ],
 247                                 '2:link' => [
 248                                         '@attributes' => [
 249                                                 'rel'  => 'http://schemas.google.com/g/2010#updates-from',
 250                                                 'type' => 'application/atom+xml',
 251                                                 'href' => $owner['poll']
 252                                         ]
 253                                 ],
 254                                 '3:link' => [
 255                                         '@attributes' => [
 256                                                 'rel'  => 'http://webfinger.net/rel/profile-page',
 257                                                 'type' => 'text/html',
 258                                                 'href' => $owner['url']
 259                                         ]
 260                                 ],
 261                                 '4:link' => [
 262                                         '@attributes' => [
 263                                                 'rel'  => 'http://microformats.org/profile/hcard',
 264                                                 'type' => 'text/html',
 265                                                 'href' => $baseURL . '/hcard/' . $owner['nickname']
 266                                         ]
 267                                 ],
 268                                 '5:link' => [
 269                                         '@attributes' => [
 270                                                 'rel'  => 'http://webfinger.net/rel/avatar',
 271                                                 'type' => $avatar['type'],
 272                                                 'href' => User::getAvatarUrl($owner)
 273                                         ]
 274                                 ],
 275                                 '6:link' => [
 276                                         '@attributes' => [
 277                                                 'rel'  => 'http://joindiaspora.com/seed_location',
 278                                                 'type' => 'text/html',
 279                                                 'href' => $baseURL
 280                                         ]
 281                                 ],
 282                                 '7:link' => [
 283                                         '@attributes' => [
 284                                                 'rel'  => 'salmon',
 285                                                 'href' => $baseURL . '/salmon/' . $owner['nickname']
 286                                         ]
 287                                 ],
 288                                 '8:link' => [
 289                                         '@attributes' => [
 290                                                 'rel'  => 'http://salmon-protocol.org/ns/salmon-replies',
 291                                                 'href' => $baseURL . '/salmon/' . $owner['nickname']
 292                                         ]
 293                                 ],
 294                                 '9:link' => [
 295                                         '@attributes' => [
 296                                                 'rel'  => 'http://salmon-protocol.org/ns/salmon-mention',
 297                                                 'href' => $baseURL . '/salmon/' . $owner['nickname'] . '/mention'
 298                                         ]
 299                                 ],
 300                                 '10:link' => [
 301                                         '@attributes' => [
 302                                                 'rel'  => 'http://ostatus.org/schema/1.0/subscribe',
 303                                                 'template' => $baseURL . '/contact/follow?url={uri}'
 304                                         ]
 305                                 ],
 306                                 '11:link' => [
 307                                         '@attributes' => [
 308                                                 'rel'  => 'magic-public-key',
 309                                                 'href' => 'data:application/magic-public-key,' . Salmon::salmonKey($owner['spubkey'])
 310                                         ]
 311                                 ],
 312                                 '12:link' => [
 313                                         '@attributes' => [
 314                                                 'rel'  => 'http://purl.org/openwebauth/v1',
 315                                                 'type' => 'application/x-zot+json',
 316                                                 'href' => $baseURL . '/owa'
 317                                         ]
 318                                 ],
 319                         ],
 320                 ]);
 321
 322                 header('Access-Control-Allow-Origin: *');
 323
 324                 System::httpExit($xmlString, Response::TYPE_XML, 'application/xrd+xml');
 325         }
 326 }