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 require_once 'boot.php';
  20
  21 class APContact extends BaseObject
  22 {
  23         /**
  24          * Resolves the profile url from the address by using webfinger
  25          *
  26          * @param string $addr profile address (user@domain.tld)
  27          * @return string url
  28          */
  29         private static function addrToUrl($addr)
  30         {
  31                 $addr_parts = explode('@', $addr);
  32                 if (count($addr_parts) != 2) {
  33                         return false;
  34                 }
  35
  36                 $webfinger = 'https://' . $addr_parts[1] . '/.well-known/webfinger?resource=acct:' . urlencode($addr);
  37
  38                 $curlResult = Network::curl($webfinger, false, $redirects, ['accept_content' => 'application/jrd+json,application/json']);
  39                 if (!$curlResult->isSuccess() || empty($curlResult->getBody())) {
  40                         return false;
  41                 }
  42
  43                 $data = json_decode($curlResult->getBody(), true);
  44
  45                 if (empty($data['links'])) {
  46                         return false;
  47                 }
  48
  49                 foreach ($data['links'] as $link) {
  50                         if (empty($link['href']) || empty($link['rel']) || empty($link['type'])) {
  51                                 continue;
  52                         }
  53
  54                         if (($link['rel'] == 'self') && ($link['type'] == 'application/activity+json')) {
  55                                 return $link['href'];
  56                         }
  57                 }
  58
  59                 return false;
  60         }
  61
  62         /**
  63          * Fetches a profile from a given url
  64          *
  65          * @param string  $url    profile url
  66          * @param boolean $update true = always update, false = never update, null = update when not found
  67          * @return array profile array
  68          */
  69         public static function getByURL($url, $update = null)
  70         {
  71                 if (empty($url)) {
  72                         return false;
  73                 }
  74
  75                 if (empty($update)) {
  76                         $apcontact = DBA::selectFirst('apcontact', [], ['url' => $url]);
  77                         if (DBA::isResult($apcontact)) {
  78                                 return $apcontact;
  79                         }
  80
  81                         $apcontact = DBA::selectFirst('apcontact', [], ['alias' => $url]);
  82                         if (DBA::isResult($apcontact)) {
  83                                 return $apcontact;
  84                         }
  85
  86                         $apcontact = DBA::selectFirst('apcontact', [], ['addr' => $url]);
  87                         if (DBA::isResult($apcontact)) {
  88                                 return $apcontact;
  89                         }
  90
  91                         if (!is_null($update)) {
  92                                 return false;
  93                         }
  94                 }
  95
  96                 if (empty(parse_url($url, PHP_URL_SCHEME))) {
  97                         $url = self::addrToUrl($url);
  98                         if (empty($url)) {
  99                                 return false;
 100                         }
 101                 }
 102
 103                 $data = ActivityPub::fetchContent($url);
 104                 if (empty($data)) {
 105                         return false;
 106                 }
 107
 108                 $compacted = JsonLD::compact($data);
 109
 110                 if (empty($compacted['@id'])) {
 111                         return false;
 112                 }
 113
 114                 $apcontact = [];
 115                 $apcontact['url'] = $compacted['@id'];
 116                 $apcontact['uuid'] = JsonLD::fetchElement($compacted, 'diaspora:guid');
 117                 $apcontact['type'] = str_replace('as:', '', JsonLD::fetchElement($compacted, '@type'));
 118                 $apcontact['following'] = JsonLD::fetchElement($compacted, 'as:following', '@id');
 119                 $apcontact['followers'] = JsonLD::fetchElement($compacted, 'as:followers', '@id');
 120                 $apcontact['inbox'] = JsonLD::fetchElement($compacted, 'ldp:inbox', '@id');
 121                 $apcontact['outbox'] = JsonLD::fetchElement($compacted, 'as:outbox', '@id');
 122
 123                 $apcontact['sharedinbox'] = '';
 124                 if (!empty($compacted['as:endpoints'])) {
 125                         $apcontact['sharedinbox'] = JsonLD::fetchElement($compacted['as:endpoints'], 'as:sharedInbox', '@id');
 126                 }
 127
 128                 $apcontact['nick'] = JsonLD::fetchElement($compacted, 'as:preferredUsername');
 129                 $apcontact['name'] = JsonLD::fetchElement($compacted, 'as:name');
 130
 131                 if (empty($apcontact['name'])) {
 132                         $apcontact['name'] = $apcontact['nick'];
 133                 }
 134
 135                 $apcontact['about'] = HTML::toBBCode(JsonLD::fetchElement($compacted, 'as:summary'));
 136
 137                 $apcontact['photo'] = JsonLD::fetchElement($compacted, 'as:icon', '@id');
 138                 if (is_array($apcontact['photo'])) {
 139                         $apcontact['photo'] = JsonLD::fetchElement($compacted['as:icon'], 'as:url', '@id');
 140                 }
 141
 142                 $apcontact['alias'] = JsonLD::fetchElement($compacted, 'as:url', '@id');
 143                 if (is_array($apcontact['alias'])) {
 144                         $apcontact['alias'] = JsonLD::fetchElement($compacted['as:url'], 'as:href', '@id');
 145                 }
 146
 147                 if (empty($apcontact['url']) || empty($apcontact['inbox'])) {
 148                         return false;
 149                 }
 150
 151                 $parts = parse_url($apcontact['url']);
 152                 unset($parts['scheme']);
 153                 unset($parts['path']);
 154                 $apcontact['addr'] = $apcontact['nick'] . '@' . str_replace('//', '', Network::unparseURL($parts));
 155
 156                 $apcontact['pubkey'] = trim(JsonLD::fetchElement($compacted, 'w3id:publicKey', 'w3id:publicKeyPem'));
 157
 158                 // To-Do
 159                 // manuallyApprovesFollowers
 160
 161                 // Unhandled
 162                 // @context, tag, attachment, image, nomadicLocations, signature, following, followers, featured, movedTo, liked
 163
 164                 // Unhandled from Misskey
 165                 // sharedInbox, isCat
 166
 167                 // Unhandled from Kroeg
 168                 // kroeg:blocks, updated
 169
 170                 // Check if the address is resolvable
 171                 if (self::addrToUrl($apcontact['addr']) == $apcontact['url']) {
 172                         $parts = parse_url($apcontact['url']);
 173                         unset($parts['path']);
 174                         $apcontact['baseurl'] = Network::unparseURL($parts);
 175                 } else {
 176                         $apcontact['addr'] = null;
 177                         $apcontact['baseurl'] = null;
 178                 }
 179
 180                 if ($apcontact['url'] == $apcontact['alias']) {
 181                         $apcontact['alias'] = null;
 182                 }
 183
 184                 $apcontact['updated'] = DateTimeFormat::utcNow();
 185
 186                 DBA::update('apcontact', $apcontact, ['url' => $url], true);
 187
 188                 // Update some data in the contact table with various ways to catch them all
 189                 $contact_fields = ['name' => $apcontact['name'], 'about' => $apcontact['about']];
 190                 DBA::update('contact', $contact_fields, ['nurl' => Strings::normaliseLink($url)]);
 191
 192                 $contacts = DBA::select('contact', ['uid', 'id'], ['nurl' => Strings::normaliseLink($url)]);
 193                 while ($contact = DBA::fetch($contacts)) {
 194                         Contact::updateAvatar($apcontact['photo'], $contact['uid'], $contact['id']);
 195                 }
 196                 DBA::close($contacts);
 197
 198                 // Update the gcontact table
 199                 DBA::update('gcontact', $contact_fields, ['nurl' => Strings::normaliseLink($url)]);
 200
 201                 Logger::log('Updated profile for ' . $url, Logger::DEBUG);
 202
 203                 return $apcontact;
 204         }
 205 }