src/Module/Xrd.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2020, Friendica
   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\Database\DBA;
  29 use Friendica\DI;
  30 use Friendica\Model\Photo;
  31 use Friendica\Model\User;
  32 use Friendica\Protocol\ActivityNamespace;
  33 use Friendica\Protocol\Salmon;
  34 use Friendica\Util\Strings;
  35
  36 /**
  37  * Prints responses to /.well-known/webfinger  or /xrd requests
  38  */
  39 class Xrd extends BaseModule
  40 {
  41         public static function rawContent(array $parameters = [])
  42         {
  43                 $app = DI::app();
  44
  45                 // @TODO: Replace with parameter from router
  46                 if ($app->argv[0] == 'xrd') {
  47                         if (empty($_GET['uri'])) {
  48                                 return;
  49                         }
  50
  51                         $uri = urldecode(Strings::escapeTags(trim($_GET['uri'])));
  52                         if (($_SERVER['HTTP_ACCEPT'] ?? '') == 'application/jrd+json') {
  53                                 $mode = 'json';
  54                         } else {
  55                                 $mode = 'xml';
  56                         }
  57                 } else {
  58                         if (empty($_GET['resource'])) {
  59                                 return;
  60                         }
  61
  62                         $uri = urldecode(Strings::escapeTags(trim($_GET['resource'])));
  63                         if (($_SERVER['HTTP_ACCEPT'] ?? '') == 'application/xrd+xml') {
  64                                 $mode = 'xml';
  65                         } else {
  66                                 $mode = 'json';
  67                         }
  68                 }
  69
  70                 if (substr($uri, 0, 4) === 'http') {
  71                         $name = ltrim(basename($uri), '~');
  72                 } else {
  73                         $local = str_replace('acct:', '', $uri);
  74                         if (substr($local, 0, 2) == '//') {
  75                                 $local = substr($local, 2);
  76                         }
  77
  78                         $name = substr($local, 0, strpos($local, '@'));
  79                 }
  80
  81                 if ($name == User::getActorName()) {
  82                         $owner = User::getSystemAccount();
  83                         if (empty($owner)) {
  84                                 throw new \Friendica\Network\HTTPException\NotFoundException();
  85                         }
  86                         self::printSystemJSON($owner);
  87                 } else {
  88                         $user = User::getByNickname($name);
  89                         if (empty($user)) {
  90                                 throw new \Friendica\Network\HTTPException\NotFoundException();
  91                         }
  92
  93                         $owner = User::getOwnerDataById($user['uid']);
  94                         if (empty($owner)) {
  95                                 DI::logger()->warning('No owner data for user id', ['uri' => $uri, 'name' => $name, 'user' => $user]);
  96                                 throw new \Friendica\Network\HTTPException\NotFoundException();
  97                         }
  98
  99                         $alias = str_replace('/profile/', '/~', $owner['url']);
 100
 101                         $avatar = Photo::selectFirst(['type'], ['uid' => $owner['uid'], 'profile' => true]);
 102                 }
 103
 104                 if (empty($avatar)) {
 105                         $avatar = ['type' => 'image/jpeg'];
 106                 }
 107
 108                 if ($mode == 'xml') {
 109                         self::printXML($alias, DI::baseUrl()->get(), $user, $owner, $avatar);
 110                 } else {
 111                         self::printJSON($alias, DI::baseUrl()->get(), $owner, $avatar);
 112                 }
 113         }
 114
 115         private static function printSystemJSON(array $owner)
 116         {
 117                 $json = [
 118                         'subject' => 'acct:' . $owner['addr'],
 119                         'aliases' => [$owner['url']],
 120                         'links'   => [
 121                                 [
 122                                         'rel'  => 'http://webfinger.net/rel/profile-page',
 123                                         'type' => 'text/html',
 124                                         'href' => $owner['url'],
 125                                 ],
 126                                 [
 127                                         'rel'  => 'self',
 128                                         'type' => 'application/activity+json',
 129                                         'href' => $owner['url'],
 130                                 ],
 131                                 [
 132                                         'rel'      => 'http://ostatus.org/schema/1.0/subscribe',
 133                                         'template' => DI::baseUrl()->get() . '/follow?url={uri}',
 134                                 ],
 135                         ]
 136                 ];
 137                 header('Access-Control-Allow-Origin: *');
 138                 System::jsonExit($json, 'application/jrd+json; charset=utf-8');
 139         }
 140
 141         private static function printJSON($alias, $baseURL, $owner, $avatar)
 142         {
 143                 $salmon_key = Salmon::salmonKey($owner['spubkey']);
 144
 145                 header('Access-Control-Allow-Origin: *');
 146                 header('Content-type: application/json; charset=utf-8');
 147
 148                 $json = [
 149                         'subject' => 'acct:' . $owner['addr'],
 150                         'aliases' => [
 151                                 $alias,
 152                                 $owner['url'],
 153                         ],
 154                         'links'   => [
 155                                 [
 156                                         'rel'  => ActivityNamespace::DFRN ,
 157                                         'href' => $owner['url'],
 158                                 ],
 159                                 [
 160                                         'rel'  => ActivityNamespace::FEED,
 161                                         'type' => 'application/atom+xml',
 162                                         'href' => $owner['poll'],
 163                                 ],
 164                                 [
 165                                         'rel'  => 'http://webfinger.net/rel/profile-page',
 166                                         'type' => 'text/html',
 167                                         'href' => $owner['url'],
 168                                 ],
 169                                 [
 170                                         'rel'  => 'self',
 171                                         'type' => 'application/activity+json',
 172                                         'href' => $owner['url'],
 173                                 ],
 174                                 [
 175                                         'rel'  => 'http://microformats.org/profile/hcard',
 176                                         'type' => 'text/html',
 177                                         'href' => $baseURL . '/hcard/' . $owner['nickname'],
 178                                 ],
 179                                 [
 180                                         'rel'  => ActivityNamespace::POCO,
 181                                         'href' => $owner['poco'],
 182                                 ],
 183                                 [
 184                                         'rel'  => 'http://webfinger.net/rel/avatar',
 185                                         'type' => $avatar['type'],
 186                                         'href' => $owner['photo'],
 187                                 ],
 188                                 [
 189                                         'rel'  => 'http://joindiaspora.com/seed_location',
 190                                         'type' => 'text/html',
 191                                         'href' => $baseURL,
 192                                 ],
 193                                 [
 194                                         'rel'  => 'salmon',
 195                                         'href' => $baseURL . '/salmon/' . $owner['nickname'],
 196                                 ],
 197                                 [
 198                                         'rel'  => 'http://salmon-protocol.org/ns/salmon-replies',
 199                                         'href' => $baseURL . '/salmon/' . $owner['nickname'],
 200                                 ],
 201                                 [
 202                                         'rel'  => 'http://salmon-protocol.org/ns/salmon-mention',
 203                                         'href' => $baseURL . '/salmon/' . $owner['nickname'] . '/mention',
 204                                 ],
 205                                 [
 206                                         'rel'      => 'http://ostatus.org/schema/1.0/subscribe',
 207                                         'template' => $baseURL . '/follow?url={uri}',
 208                                 ],
 209                                 [
 210                                         'rel'  => 'magic-public-key',
 211                                         'href' => 'data:application/magic-public-key,' . $salmon_key,
 212                                 ],
 213                                 [
 214                                         'rel'  => 'http://purl.org/openwebauth/v1',
 215                                         'type' => 'application/x-zot+json',
 216                                         'href' => $baseURL . '/owa',
 217                                 ],
 218                         ],
 219                 ];
 220
 221                 echo json_encode($json);
 222                 exit();
 223         }
 224
 225         private static function printXML($alias, $baseURL, $user, $owner, $avatar)
 226         {
 227                 $salmon_key = Salmon::salmonKey($owner['spubkey']);
 228
 229                 header('Access-Control-Allow-Origin: *');
 230                 header('Content-type: text/xml');
 231
 232                 $tpl = Renderer::getMarkupTemplate('xrd_person.tpl');
 233
 234                 $o = Renderer::replaceMacros($tpl, [
 235                         '$nick'        => $owner['nickname'],
 236                         '$accturi'     => 'acct:' . $owner['addr'],
 237                         '$alias'       => $alias,
 238                         '$profile_url' => $owner['url'],
 239                         '$hcard_url'   => $baseURL . '/hcard/' . $owner['nickname'],
 240                         '$atom'        => $owner['poll'],
 241                         '$poco_url'    => $owner['poco'],
 242                         '$photo'       => $owner['photo'],
 243                         '$type'        => $avatar['type'],
 244                         '$salmon'      => $baseURL . '/salmon/' . $owner['nickname'],
 245                         '$salmen'      => $baseURL . '/salmon/' . $owner['nickname'] . '/mention',
 246                         '$subscribe'   => $baseURL . '/follow?url={uri}',
 247                         '$openwebauth' => $baseURL . '/owa',
 248                         '$modexp'      => 'data:application/magic-public-key,' . $salmon_key
 249                 ]);
 250
 251                 $arr = ['user' => $user, 'xml' => $o];
 252                 Hook::callAll('personal_xrd', $arr);
 253
 254                 echo $arr['xml'];
 255                 exit();
 256         }
 257 }