src/Model/APContact.php

   1 <?php
   2
   3 /**
   4  * @file src/Model/APContact.php
   5  */
   6
   7 namespace Friendica\Model;
   8
   9 use Friendica\BaseObject;
  10 use Friendica\Core\Logger;
  11 use Friendica\Database\DBA;
  12 use Friendica\Protocol\ActivityPub;
  13 use Friendica\Util\Network;
  14 use Friendica\Util\JsonLD;
  15 use Friendica\Util\DateTimeFormat;
  16 use Friendica\Content\Text\HTML;
  17
  18 require_once 'boot.php';
  19
  20 class APContact extends BaseObject
  21 {
  22         /**
  23          * Resolves the profile url from the address by using webfinger
  24          *
  25          * @param string $addr profile address (user@domain.tld)
  26          * @return string url
  27          */
  28         private static function addrToUrl($addr)
  29         {
  30                 $addr_parts = explode('@', $addr);
  31                 if (count($addr_parts) != 2) {
  32                         return false;
  33                 }
  34
  35                 $webfinger = 'https://' . $addr_parts[1] . '/.well-known/webfinger?resource=acct:' . urlencode($addr);
  36
  37                 $curlResult = Network::curl($webfinger, false, $redirects, ['accept_content' => 'application/jrd+json,application/json']);
  38                 if (!$curlResult->isSuccess() || empty($curlResult->getBody())) {
  39                         return false;
  40                 }
  41
  42                 $data = json_decode($curlResult->getBody(), true);
  43
  44                 if (empty($data['links'])) {
  45                         return false;
  46                 }
  47
  48                 foreach ($data['links'] as $link) {
  49                         if (empty($link['href']) || empty($link['rel']) || empty($link['type'])) {
  50                                 continue;
  51                         }
  52
  53                         if (($link['rel'] == 'self') && ($link['type'] == 'application/activity+json')) {
  54                                 return $link['href'];
  55                         }
  56                 }
  57
  58                 return false;
  59         }
  60
  61         /**
  62          * Fetches a profile from a given url
  63          *
  64          * @param string  $url    profile url
  65          * @param boolean $update true = always update, false = never update, null = update when not found
  66          * @return array profile array
  67          */
  68         public static function getByURL($url, $update = null)
  69         {
  70                 if (empty($url)) {
  71                         return false;
  72                 }
  73
  74                 if (empty($update)) {
  75                         $apcontact = DBA::selectFirst('apcontact', [], ['url' => $url]);
  76                         if (DBA::isResult($apcontact)) {
  77                                 return $apcontact;
  78                         }
  79
  80                         $apcontact = DBA::selectFirst('apcontact', [], ['alias' => $url]);
  81                         if (DBA::isResult($apcontact)) {
  82                                 return $apcontact;
  83                         }
  84
  85                         $apcontact = DBA::selectFirst('apcontact', [], ['addr' => $url]);
  86                         if (DBA::isResult($apcontact)) {
  87                                 return $apcontact;
  88                         }
  89
  90                         if (!is_null($update)) {
  91                                 return false;
  92                         }
  93                 }
  94
  95                 if (empty(parse_url($url, PHP_URL_SCHEME))) {
  96                         $url = self::addrToUrl($url);
  97                         if (empty($url)) {
  98                                 return false;
  99                         }
 100                 }
 101
 102                 $data = ActivityPub::fetchContent($url);
 103                 if (empty($data)) {
 104                         return false;
 105                 }
 106
 107                 $compacted = JsonLD::compact($data);
 108
 109                 if (empty($compacted['@id'])) {
 110                         return false;
 111                 }
 112
 113                 $apcontact = [];
 114                 $apcontact['url'] = $compacted['@id'];
 115                 $apcontact['uuid'] = JsonLD::fetchElement($compacted, 'diaspora:guid');
 116                 $apcontact['type'] = str_replace('as:', '', JsonLD::fetchElement($compacted, '@type'));
 117                 $apcontact['following'] = JsonLD::fetchElement($compacted, 'as:following', '@id');
 118                 $apcontact['followers'] = JsonLD::fetchElement($compacted, 'as:followers', '@id');
 119                 $apcontact['inbox'] = JsonLD::fetchElement($compacted, 'ldp:inbox', '@id');
 120                 $apcontact['outbox'] = JsonLD::fetchElement($compacted, 'as:outbox', '@id');
 121
 122                 $apcontact['sharedinbox'] = '';
 123                 if (!empty($compacted['as:endpoints'])) {
 124                         $apcontact['sharedinbox'] = JsonLD::fetchElement($compacted['as:endpoints'], 'as:sharedInbox', '@id');
 125                 }
 126
 127                 $apcontact['nick'] = JsonLD::fetchElement($compacted, 'as:preferredUsername');
 128                 $apcontact['name'] = JsonLD::fetchElement($compacted, 'as:name');
 129
 130                 if (empty($apcontact['name'])) {
 131                         $apcontact['name'] = $apcontact['nick'];
 132                 }
 133
 134                 $apcontact['about'] = HTML::toBBCode(JsonLD::fetchElement($compacted, 'as:summary'));
 135
 136                 $apcontact['photo'] = JsonLD::fetchElement($compacted, 'as:icon', '@id');
 137                 if (is_array($apcontact['photo'])) {
 138                         $apcontact['photo'] = JsonLD::fetchElement($compacted['as:icon'], 'as:url', '@id');
 139                 }
 140
 141                 $apcontact['alias'] = JsonLD::fetchElement($compacted, 'as:url', '@id');
 142                 if (is_array($apcontact['alias'])) {
 143                         $apcontact['alias'] = JsonLD::fetchElement($compacted['as:url'], 'as:href', '@id');
 144                 }
 145
 146                 if (empty($apcontact['url']) || empty($apcontact['inbox'])) {
 147                         return false;
 148                 }
 149
 150                 $parts = parse_url($apcontact['url']);
 151                 unset($parts['scheme']);
 152                 unset($parts['path']);
 153                 $apcontact['addr'] = $apcontact['nick'] . '@' . str_replace('//', '', Network::unparseURL($parts));
 154
 155                 $apcontact['pubkey'] = trim(JsonLD::fetchElement($compacted, 'w3id:publicKey', 'w3id:publicKeyPem'));
 156
 157                 // To-Do
 158                 // manuallyApprovesFollowers
 159
 160                 // Unhandled
 161                 // @context, tag, attachment, image, nomadicLocations, signature, following, followers, featured, movedTo, liked
 162
 163                 // Unhandled from Misskey
 164                 // sharedInbox, isCat
 165
 166                 // Unhandled from Kroeg
 167                 // kroeg:blocks, updated
 168
 169                 // Check if the address is resolvable
 170                 if (self::addrToUrl($apcontact['addr']) == $apcontact['url']) {
 171                         $parts = parse_url($apcontact['url']);
 172                         unset($parts['path']);
 173                         $apcontact['baseurl'] = Network::unparseURL($parts);
 174                 } else {
 175                         $apcontact['addr'] = null;
 176                         $apcontact['baseurl'] = null;
 177                 }
 178
 179                 if ($apcontact['url'] == $apcontact['alias']) {
 180                         $apcontact['alias'] = null;
 181                 }
 182
 183                 $apcontact['updated'] = DateTimeFormat::utcNow();
 184
 185                 DBA::update('apcontact', $apcontact, ['url' => $url], true);
 186
 187                 // Update some data in the contact table with various ways to catch them all
 188                 $contact_fields = ['name' => $apcontact['name'], 'about' => $apcontact['about']];
 189                 DBA::update('contact', $contact_fields, ['nurl' => normalise_link($url)]);
 190
 191                 $contacts = DBA::select('contact', ['uid', 'id'], ['nurl' => normalise_link($url)]);
 192                 while ($contact = DBA::fetch($contacts)) {
 193                         Contact::updateAvatar($apcontact['photo'], $contact['uid'], $contact['id']);
 194                 }
 195                 DBA::close($contacts);
 196
 197                 // Update the gcontact table
 198                 DBA::update('gcontact', $contact_fields, ['nurl' => normalise_link($url)]);
 199
 200                 Logger::log('Updated profile for ' . $url, Logger::DEBUG);
 201
 202                 return $apcontact;
 203         }
 204 }