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