src/Module/WebFinger.php

   1 <?php
   2
   3 namespace Friendica\Module;
   4
   5 use Friendica\BaseModule;
   6 use Friendica\Core\Hook;
   7 use Friendica\Core\L10n;
   8 use Friendica\Core\Renderer;
   9 use Friendica\Core\System;
  10 use Friendica\Model\User;
  11 use Friendica\Network\Probe;
  12 use Friendica\Protocol\Salmon;
  13 use Friendica\Util\Strings;
  14
  15 /**
  16  * Prints information about people
  17  * @see https://tools.ietf.org/html/rfc7033
  18  */
  19 class WebFinger extends BaseModule
  20 {
  21         public static function content()
  22         {
  23                 parent::content();
  24
  25                 if (!local_user()) {
  26                         System::httpExit(
  27                                 403,
  28                                 [
  29                                         "title"       => L10n::t("Public access denied."),
  30                                         "description" => L10n::t("Only logged in users are permitted to perform a probing.")
  31                                 ]
  32                         );
  33                         exit();
  34                 }
  35
  36                 $output = '<div class="generic-page-wrapper">';
  37                 $output .= '<h3>Webfinger Diagnostic</h3>';
  38
  39                 $output .= '<form action="webfinger" method="get">';
  40                 $output .= 'Lookup address: <input type="text" style="width: 250px;" name="addr" value="' . defaults($_GET, 'addr', '') . '" />';
  41                 $output .= '<input type="submit" name="submit" value="Submit" /></form>';
  42
  43                 $output .= '<br /><br />';
  44
  45                 if (!empty($_GET['addr'])) {
  46                         $addr = trim($_GET['addr']);
  47                         $res = Probe::lrdd($addr);
  48                         $output .= '<pre>';
  49                         $output .= str_replace("\n", '<br />', print_r($res, true));
  50                         $output .= '</pre>';
  51                 }
  52                 $output .= '</div>';
  53
  54                 return $output;
  55         }
  56
  57         public static function rawContent()
  58         {
  59                 parent::rawContent();
  60
  61                 $app = self::getApp();
  62
  63                 // @TODO: Replace with parameter from router
  64                 if ($app->argv[0] == 'xrd') {
  65                         if (empty($_GET['uri'])) {
  66                                 return;
  67                         }
  68
  69                         $uri = urldecode(Strings::escapeTags(trim($_GET['uri'])));
  70                         if (defaults($_SERVER, 'HTTP_ACCEPT', '') == 'application/jrd+json') {
  71                                 $mode = 'json';
  72                         } else {
  73                                 $mode = 'xml';
  74                         }
  75                 } else {
  76                         if (empty($_GET['resource'])) {
  77                                 return;
  78                         }
  79
  80                         $uri = urldecode(Strings::escapeTags(trim($_GET['resource'])));
  81                         if (defaults($_SERVER, 'HTTP_ACCEPT', '') == 'application/xrd+xml') {
  82                                 $mode = 'xml';
  83                         } else {
  84                                 $mode = 'json';
  85                         }
  86                 }
  87
  88                 if (substr($uri, 0, 4) === 'http') {
  89                         $name = ltrim(basename($uri), '~');
  90                 } else {
  91                         $local = str_replace('acct:', '', $uri);
  92                         if (substr($local, 0, 2) == '//') {
  93                                 $local = substr($local, 2);
  94                         }
  95
  96                         $name = substr($local, 0, strpos($local, '@'));
  97                 }
  98
  99                 $user = User::getByNickname($name);
 100
 101                 if (empty($user)) {
 102                         System::httpExit(404);
 103                 }
 104
 105                 $profileURL = $app->getBaseURL() . '/profile/' . $user['nickname'];
 106                 $alias = str_replace('/profile/', '/~', $profileURL);
 107
 108                 $addr = 'acct:' . $user['nickname'] . '@' . $app->getHostName();
 109                 if ($app->getURLPath()) {
 110                         $addr .= '/' . $app->getURLPath();
 111                 }
 112
 113                 if ($mode == 'xml') {
 114                         self::printXML($addr, $alias, $profileURL, $app->getBaseURL(), $user);
 115                 } else {
 116                         self::printJSON($addr, $alias, $profileURL, $app->getBaseURL(), $user);
 117                 }
 118         }
 119
 120         private static function printJSON($uri, $alias, $orofileURL, $baseURL, $user)
 121         {
 122                 $salmon_key = Salmon::salmonKey($user['spubkey']);
 123
 124                 header('Access-Control-Allow-Origin: *');
 125                 header("Content-type: application/json; charset=utf-8");
 126
 127                 $json = ['subject' => $uri,
 128                                  'aliases' => [
 129                                          $alias,
 130                                          $orofileURL,
 131                                  ],
 132                                  'links'   => [
 133                                          [
 134                                                  'rel'  => NAMESPACE_DFRN,
 135                                                  'href' => $orofileURL,
 136                                          ],
 137                                          [
 138                                                  'rel'  => NAMESPACE_FEED,
 139                                                  'type' => 'application/atom+xml',
 140                                                  'href' => $baseURL . '/dfrn_poll/' . $user['nickname'],
 141                                          ],
 142                                          [
 143                                                  'rel'  => 'http://webfinger.net/rel/profile-page',
 144                                                  'type' => 'text/html',
 145                                                  'href' => $orofileURL,
 146                                          ],
 147                                          [
 148                                                  'rel'  => 'self',
 149                                                  'type' => 'application/activity+json',
 150                                                  'href' => $orofileURL,
 151                                          ],
 152                                          [
 153                                                  'rel'  => 'http://microformats.org/profile/hcard',
 154                                                  'type' => 'text/html',
 155                                                  'href' => $baseURL . '/hcard/' . $user['nickname'],
 156                                          ],
 157                                          [
 158                                                  'rel'  => NAMESPACE_POCO,
 159                                                  'href' => $baseURL . '/poco/' . $user['nickname'],
 160                                          ],
 161                                          [
 162                                                  'rel'  => 'http://webfinger.net/rel/avatar',
 163                                                  'type' => 'image/jpeg',
 164                                                  'href' => $baseURL . '/photo/profile/' . $user['uid'] . '.jpg',
 165                                          ],
 166                                          [
 167                                                  'rel'  => 'http://joindiaspora.com/seed_location',
 168                                                  'type' => 'text/html',
 169                                                  'href' => $baseURL,
 170                                          ],
 171                                          [
 172                                                  'rel'  => 'salmon',
 173                                                  'href' => $baseURL . '/salmon/' . $user['nickname'],
 174                                          ],
 175                                          [
 176                                                  'rel'  => 'http://salmon-protocol.org/ns/salmon-replies',
 177                                                  'href' => $baseURL . '/salmon/' . $user['nickname'],
 178                                          ],
 179                                          [
 180                                                  'rel'  => 'http://salmon-protocol.org/ns/salmon-mention',
 181                                                  'href' => $baseURL . '/salmon/' . $user['nickname'] . '/mention',
 182                                          ],
 183                                          [
 184                                                  'rel'      => 'http://ostatus.org/schema/1.0/subscribe',
 185                                                  'template' => $baseURL . '/follow?url={uri}',
 186                                          ],
 187                                          [
 188                                                  'rel'  => 'magic-public-key',
 189                                                  'href' => 'data:application/magic-public-key,' . $salmon_key,
 190                                          ],
 191                                          [
 192                                                  'rel'  => 'http://purl.org/openwebauth/v1',
 193                                                  'type' => 'application/x-zot+json',
 194                                                  'href' => $baseURL . '/owa',
 195                                          ],
 196                                  ],
 197                 ];
 198
 199                 echo json_encode($json);
 200                 exit();
 201         }
 202
 203         private static function printXML($uri, $alias, $profileURL, $baseURL, $user)
 204         {
 205                 $salmon_key = Salmon::salmonKey($user['spubkey']);
 206
 207                 header('Access-Control-Allow-Origin: *');
 208                 header("Content-type: text/xml");
 209
 210                 $tpl = Renderer::getMarkupTemplate('xrd_person.tpl');
 211
 212                 $o = Renderer::replaceMacros($tpl, [
 213                                 '$nick'        => $user['nickname'],
 214                                 '$accturi'     => $uri,
 215                                 '$alias'       => $alias,
 216                                 '$profile_url' => $profileURL,
 217                                 '$hcard_url'   => $baseURL . '/hcard/' . $user['nickname'],
 218                                 '$atom'        => $baseURL . '/dfrn_poll/' . $user['nickname'],
 219                                 '$poco_url'    => $baseURL . '/poco/' . $user['nickname'],
 220                                 '$photo'       => $baseURL . '/photo/profile/' . $user['uid'] . '.jpg',
 221                                 '$baseurl'     => $baseURL,
 222                                 '$salmon'      => $baseURL . '/salmon/' . $user['nickname'],
 223                                 '$salmen'      => $baseURL . '/salmon/' . $user['nickname'] . '/mention',
 224                                 '$subscribe'   => $baseURL . '/follow?url={uri}',
 225                                 '$openwebauth' => $baseURL . '/owa',
 226                                 '$modexp'      => 'data:application/magic-public-key,' . $salmon_key]
 227                 );
 228
 229                 $arr = ['user' => $user, 'xml' => $o];
 230                 Hook::callAll('personal_xrd', $arr);
 231
 232                 echo $arr['xml'];
 233                 exit();
 234         }
 235 }