src/Module/Xrd.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2022, 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\Hook;
  26 use Friendica\Core\Renderer;
  27 use Friendica\Core\System;
  28 use Friendica\DI;
  29 use Friendica\Model\Photo;
  30 use Friendica\Model\User;
  31 use Friendica\Network\HTTPException\NotFoundException;
  32 use Friendica\Protocol\ActivityNamespace;
  33 use Friendica\Protocol\Salmon;
  34
  35 /**
  36  * Prints responses to /.well-known/webfinger  or /xrd requests
  37  */
  38 class Xrd extends BaseModule
  39 {
  40         protected function rawContent(array $request = [])
  41         {
  42                 // @TODO: Replace with parameter from router
  43                 if (DI::args()->getArgv()[0] == 'xrd') {
  44                         if (empty($_GET['uri'])) {
  45                                 return;
  46                         }
  47
  48                         $uri = urldecode(trim($_GET['uri']));
  49                         if (strpos($_SERVER['HTTP_ACCEPT'] ?? '', 'application/jrd+json') !== false)  {
  50                                 $mode = Response::TYPE_JSON;
  51                         } else {
  52                                 $mode = Response::TYPE_XML;
  53                         }
  54                 } else {
  55                         if (empty($_GET['resource'])) {
  56                                 return;
  57                         }
  58
  59                         $uri = urldecode(trim($_GET['resource']));
  60                         if (strpos($_SERVER['HTTP_ACCEPT'] ?? '', 'application/xrd+xml') !== false)  {
  61                                 $mode = Response::TYPE_XML;
  62                         } else {
  63                                 $mode = Response::TYPE_JSON;
  64                         }
  65                 }
  66
  67                 if (substr($uri, 0, 4) === 'http') {
  68                         $name = ltrim(basename($uri), '~');
  69                 } else {
  70                         $local = str_replace('acct:', '', $uri);
  71                         if (substr($local, 0, 2) == '//') {
  72                                 $local = substr($local, 2);
  73                         }
  74
  75                         $name = substr($local, 0, strpos($local, '@'));
  76                 }
  77
  78                 if ($name == User::getActorName()) {
  79                         $owner = User::getSystemAccount();
  80                         if (empty($owner)) {
  81                                 throw new NotFoundException('System account was not found. Please setup your Friendica installation properly.');
  82                         }
  83                         $this->printSystemJSON($owner);
  84                 } else {
  85                         $user = User::getByNickname($name);
  86                         if (empty($user)) {
  87                                 throw new NotFoundException('User was not found for name=' . $name);
  88                         }
  89
  90                         $owner = User::getOwnerDataById($user['uid']);
  91                         if (empty($owner)) {
  92                                 DI::logger()->warning('No owner data for user id', ['uri' => $uri, 'name' => $name, 'user' => $user]);
  93                                 throw new NotFoundException('Owner was not found for user->uid=' . $user['uid']);
  94                         }
  95
  96                         $alias = str_replace('/profile/', '/~', $owner['url']);
  97
  98                         $avatar = Photo::selectFirst(['type'], ['uid' => $owner['uid'], 'profile' => true]);
  99                 }
 100
 101                 if (empty($avatar)) {
 102                         $avatar = ['type' => 'image/jpeg'];
 103                 }
 104
 105                 if ($mode == Response::TYPE_XML) {
 106                         $this->printXML($alias, $user, $owner, $avatar);
 107                 } else {
 108                         $this->printJSON($alias, $owner, $avatar);
 109                 }
 110         }
 111
 112         private function printSystemJSON(array $owner)
 113         {
 114                 $baseURL = $this->baseurl->get();
 115                 $json = [
 116                         'subject' => 'acct:' . $owner['addr'],
 117                         'aliases' => [$owner['url']],
 118                         'links'   => [
 119                                 [
 120                                         'rel'  => 'http://webfinger.net/rel/profile-page',
 121                                         'type' => 'text/html',
 122                                         'href' => $owner['url'],
 123                                 ],
 124                                 [
 125                                         'rel'  => 'self',
 126                                         'type' => 'application/activity+json',
 127                                         'href' => $owner['url'],
 128                                 ],
 129                                 [
 130                                         'rel'      => 'http://ostatus.org/schema/1.0/subscribe',
 131                                         'template' => $baseURL . '/follow?url={uri}',
 132                                 ],
 133                                 [
 134                                         'rel'  => ActivityNamespace::FEED,
 135                                         'type' => 'application/atom+xml',
 136                                         'href' => $owner['poll'] ?? $baseURL,
 137                                 ],
 138                                 [
 139                                         'rel'  => 'salmon',
 140                                         'href' => $baseURL . '/salmon/' . $owner['nickname'],
 141                                 ],
 142                                 [
 143                                         'rel'  => 'http://microformats.org/profile/hcard',
 144                                         'type' => 'text/html',
 145                                         'href' => $baseURL . '/hcard/' . $owner['nickname'],
 146                                 ],
 147                                 [
 148                                         'rel'  => 'http://joindiaspora.com/seed_location',
 149                                         'type' => 'text/html',
 150                                         'href' => $baseURL,
 151                                 ],
 152                         ]
 153                 ];
 154                 header('Access-Control-Allow-Origin: *');
 155                 System::jsonExit($json, 'application/jrd+json; charset=utf-8');
 156         }
 157
 158         private function printJSON(string $alias, array $owner, array $avatar)
 159         {
 160                 $baseURL = $this->baseurl->get();
 161                 $salmon_key = Salmon::salmonKey($owner['spubkey']);
 162
 163                 $json = [
 164                         'subject' => 'acct:' . $owner['addr'],
 165                         'aliases' => [
 166                                 $alias,
 167                                 $owner['url'],
 168                         ],
 169                         'links'   => [
 170                                 [
 171                                         'rel'  => ActivityNamespace::DFRN ,
 172                                         'href' => $owner['url'],
 173                                 ],
 174                                 [
 175                                         'rel'  => ActivityNamespace::FEED,
 176                                         'type' => 'application/atom+xml',
 177                                         'href' => $owner['poll'],
 178                                 ],
 179                                 [
 180                                         'rel'  => 'http://webfinger.net/rel/profile-page',
 181                                         'type' => 'text/html',
 182                                         'href' => $owner['url'],
 183                                 ],
 184                                 [
 185                                         'rel'  => 'self',
 186                                         'type' => 'application/activity+json',
 187                                         'href' => $owner['url'],
 188                                 ],
 189                                 [
 190                                         'rel'  => 'http://microformats.org/profile/hcard',
 191                                         'type' => 'text/html',
 192                                         'href' => $baseURL . '/hcard/' . $owner['nickname'],
 193                                 ],
 194                                 [
 195                                         'rel'  => ActivityNamespace::POCO,
 196                                         'href' => $owner['poco'],
 197                                 ],
 198                                 [
 199                                         'rel'  => 'http://webfinger.net/rel/avatar',
 200                                         'type' => $avatar['type'],
 201                                         'href' => User::getAvatarUrl($owner),
 202                                 ],
 203                                 [
 204                                         'rel'  => 'http://joindiaspora.com/seed_location',
 205                                         'type' => 'text/html',
 206                                         'href' => $baseURL,
 207                                 ],
 208                                 [
 209                                         'rel'  => 'salmon',
 210                                         'href' => $baseURL . '/salmon/' . $owner['nickname'],
 211                                 ],
 212                                 [
 213                                         'rel'  => 'http://salmon-protocol.org/ns/salmon-replies',
 214                                         'href' => $baseURL . '/salmon/' . $owner['nickname'],
 215                                 ],
 216                                 [
 217                                         'rel'  => 'http://salmon-protocol.org/ns/salmon-mention',
 218                                         'href' => $baseURL . '/salmon/' . $owner['nickname'] . '/mention',
 219                                 ],
 220                                 [
 221                                         'rel'      => 'http://ostatus.org/schema/1.0/subscribe',
 222                                         'template' => $baseURL . '/follow?url={uri}',
 223                                 ],
 224                                 [
 225                                         'rel'  => 'magic-public-key',
 226                                         'href' => 'data:application/magic-public-key,' . $salmon_key,
 227                                 ],
 228                                 [
 229                                         'rel'  => 'http://purl.org/openwebauth/v1',
 230                                         'type' => 'application/x-zot+json',
 231                                         'href' => $baseURL . '/owa',
 232                                 ],
 233                         ],
 234                 ];
 235
 236                 header('Access-Control-Allow-Origin: *');
 237                 System::jsonExit($json, 'application/jrd+json; charset=utf-8');
 238         }
 239
 240         private function printXML(string $alias, array $user, array $owner, array $avatar)
 241         {
 242                 $baseURL = $this->baseurl->get();
 243                 $salmon_key = Salmon::salmonKey($owner['spubkey']);
 244
 245                 $tpl = Renderer::getMarkupTemplate('xrd_person.tpl');
 246
 247                 $o = Renderer::replaceMacros($tpl, [
 248                         '$nick'        => $owner['nickname'],
 249                         '$accturi'     => 'acct:' . $owner['addr'],
 250                         '$alias'       => $alias,
 251                         '$profile_url' => $owner['url'],
 252                         '$hcard_url'   => $baseURL . '/hcard/' . $owner['nickname'],
 253                         '$atom'        => $owner['poll'],
 254                         '$poco_url'    => $owner['poco'],
 255                         '$photo'       => User::getAvatarUrl($owner),
 256                         '$type'        => $avatar['type'],
 257                         '$salmon'      => $baseURL . '/salmon/' . $owner['nickname'],
 258                         '$salmen'      => $baseURL . '/salmon/' . $owner['nickname'] . '/mention',
 259                         '$subscribe'   => $baseURL . '/follow?url={uri}',
 260                         '$openwebauth' => $baseURL . '/owa',
 261                         '$modexp'      => 'data:application/magic-public-key,' . $salmon_key
 262                 ]);
 263
 264                 $arr = ['user' => $user, 'xml' => $o];
 265                 Hook::callAll('personal_xrd', $arr);
 266
 267                 header('Access-Control-Allow-Origin: *');
 268
 269                 System::httpExit($arr['xml'], Response::TYPE_XML, 'application/xrd+xml');
 270         }
 271 }