src/Module/Xrd.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2021, 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\Protocol\ActivityNamespace;
  32 use Friendica\Protocol\Salmon;
  33 use Friendica\Util\Strings;
  34
  35 /**
  36  * Prints responses to /.well-known/webfinger  or /xrd requests
  37  */
  38 class Xrd extends BaseModule
  39 {
  40         public static function rawContent(array $parameters = [])
  41         {
  42                 // @TODO: Replace with parameter from router
  43                 if (DI::args()->getArgv()[0] == 'xrd') {
  44                         if (empty($_GET['uri'])) {
  45                                 return;
  46                         }
  47
  48                         $uri = urldecode(Strings::escapeTags(trim($_GET['uri'])));
  49                         if (strpos($_SERVER['HTTP_ACCEPT'] ?? '', 'application/jrd+json') !== false)  {
  50                                 $mode = 'json';
  51                         } else {
  52                                 $mode = 'xml';
  53                         }
  54                 } else {
  55                         if (empty($_GET['resource'])) {
  56                                 return;
  57                         }
  58
  59                         $uri = urldecode(Strings::escapeTags(trim($_GET['resource'])));
  60                         if (strpos($_SERVER['HTTP_ACCEPT'] ?? '', 'application/xrd+xml') !== false)  {
  61                                 $mode = 'xml';
  62                         } else {
  63                                 $mode = 'json';
  64                         }
  65                 }
  66
  67                 if (substr($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 \Friendica\Network\HTTPException\NotFoundException();
  82                         }
  83                         self::printSystemJSON($owner);
  84                 } else {
  85                         $user = User::getByNickname($name);
  86                         if (empty($user)) {
  87                                 throw new \Friendica\Network\HTTPException\NotFoundException();
  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 \Friendica\Network\HTTPException\NotFoundException();
  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 == 'xml') {
 106                         self::printXML($alias, DI::baseUrl()->get(), $user, $owner, $avatar);
 107                 } else {
 108                         self::printJSON($alias, DI::baseUrl()->get(), $owner, $avatar);
 109                 }
 110         }
 111
 112         private static function printSystemJSON(array $owner)
 113         {
 114                 $json = [
 115                         'subject' => 'acct:' . $owner['addr'],
 116                         'aliases' => [$owner['url']],
 117                         'links'   => [
 118                                 [
 119                                         'rel'  => 'http://webfinger.net/rel/profile-page',
 120                                         'type' => 'text/html',
 121                                         'href' => $owner['url'],
 122                                 ],
 123                                 [
 124                                         'rel'  => 'self',
 125                                         'type' => 'application/activity+json',
 126                                         'href' => $owner['url'],
 127                                 ],
 128                                 [
 129                                         'rel'      => 'http://ostatus.org/schema/1.0/subscribe',
 130                                         'template' => DI::baseUrl()->get() . '/follow?url={uri}',
 131                                 ],
 132                                 [
 133                                         'rel'  => ActivityNamespace::FEED,
 134                                         'type' => 'application/atom+xml',
 135                                         'href' => $owner['poll'] ?? DI::baseUrl()->get(),
 136                                 ],
 137                                 [
 138                                         'rel'  => 'salmon',
 139                                         'href' => DI::baseUrl()->get() . '/salmon/' . $owner['nickname'],
 140                                 ],
 141                                 [
 142                                         'rel'  => 'http://microformats.org/profile/hcard',
 143                                         'type' => 'text/html',
 144                                         'href' => DI::baseUrl()->get() . '/hcard/' . $owner['nickname'],
 145                                 ],
 146                                 [
 147                                         'rel'  => 'http://joindiaspora.com/seed_location',
 148                                         'type' => 'text/html',
 149                                         'href' => DI::baseUrl()->get(),
 150                                 ],
 151                         ]
 152                 ];
 153                 header('Access-Control-Allow-Origin: *');
 154                 System::jsonExit($json, 'application/jrd+json; charset=utf-8');
 155         }
 156
 157         private static function printJSON($alias, $baseURL, $owner, $avatar)
 158         {
 159                 $salmon_key = Salmon::salmonKey($owner['spubkey']);
 160
 161                 $json = [
 162                         'subject' => 'acct:' . $owner['addr'],
 163                         'aliases' => [
 164                                 $alias,
 165                                 $owner['url'],
 166                         ],
 167                         'links'   => [
 168                                 [
 169                                         'rel'  => ActivityNamespace::DFRN ,
 170                                         'href' => $owner['url'],
 171                                 ],
 172                                 [
 173                                         'rel'  => ActivityNamespace::FEED,
 174                                         'type' => 'application/atom+xml',
 175                                         'href' => $owner['poll'],
 176                                 ],
 177                                 [
 178                                         'rel'  => 'http://webfinger.net/rel/profile-page',
 179                                         'type' => 'text/html',
 180                                         'href' => $owner['url'],
 181                                 ],
 182                                 [
 183                                         'rel'  => 'self',
 184                                         'type' => 'application/activity+json',
 185                                         'href' => $owner['url'],
 186                                 ],
 187                                 [
 188                                         'rel'  => 'http://microformats.org/profile/hcard',
 189                                         'type' => 'text/html',
 190                                         'href' => $baseURL . '/hcard/' . $owner['nickname'],
 191                                 ],
 192                                 [
 193                                         'rel'  => ActivityNamespace::POCO,
 194                                         'href' => $owner['poco'],
 195                                 ],
 196                                 [
 197                                         'rel'  => 'http://webfinger.net/rel/avatar',
 198                                         'type' => $avatar['type'],
 199                                         'href' => User::getAvatarUrl($owner),
 200                                 ],
 201                                 [
 202                                         'rel'  => 'http://joindiaspora.com/seed_location',
 203                                         'type' => 'text/html',
 204                                         'href' => $baseURL,
 205                                 ],
 206                                 [
 207                                         'rel'  => 'salmon',
 208                                         'href' => $baseURL . '/salmon/' . $owner['nickname'],
 209                                 ],
 210                                 [
 211                                         'rel'  => 'http://salmon-protocol.org/ns/salmon-replies',
 212                                         'href' => $baseURL . '/salmon/' . $owner['nickname'],
 213                                 ],
 214                                 [
 215                                         'rel'  => 'http://salmon-protocol.org/ns/salmon-mention',
 216                                         'href' => $baseURL . '/salmon/' . $owner['nickname'] . '/mention',
 217                                 ],
 218                                 [
 219                                         'rel'      => 'http://ostatus.org/schema/1.0/subscribe',
 220                                         'template' => $baseURL . '/follow?url={uri}',
 221                                 ],
 222                                 [
 223                                         'rel'  => 'magic-public-key',
 224                                         'href' => 'data:application/magic-public-key,' . $salmon_key,
 225                                 ],
 226                                 [
 227                                         'rel'  => 'http://purl.org/openwebauth/v1',
 228                                         'type' => 'application/x-zot+json',
 229                                         'href' => $baseURL . '/owa',
 230                                 ],
 231                         ],
 232                 ];
 233
 234                 header('Access-Control-Allow-Origin: *');
 235                 System::jsonExit($json, 'application/jrd+json; charset=utf-8');
 236         }
 237
 238         private static function printXML($alias, $baseURL, $user, $owner, $avatar)
 239         {
 240                 $salmon_key = Salmon::salmonKey($owner['spubkey']);
 241
 242                 header('Access-Control-Allow-Origin: *');
 243                 header('Content-type: text/xml');
 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                 echo $arr['xml'];
 268                 exit();
 269         }
 270 }