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 $addr profile address (user@domain.tld)
  25          * @return string url
  26          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
  27          */
  28         private static function addrToUrl($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  65          * @param boolean $update true = always update, false = never update, null = update when not found or outdated
  66          * @return array profile array
  67          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
  68          * @throws \ImagickException
  69          */
  70         public static function getByURL($url, $update = null)
  71         {
  72                 if (empty($url)) {
  73                         return false;
  74                 }
  75
  76                 if (empty($update)) {
  77                         if (is_null($update)) {
  78                                 $ref_update = DateTimeFormat::utc('now - 1 month');
  79                         } else {
  80                                 $ref_update = DBA::NULL_DATETIME;
  81                         }
  82
  83                         $apcontact = DBA::selectFirst('apcontact', [], ['url' => $url]);
  84                         if (!DBA::isResult($apcontact)) {
  85                                 $apcontact = DBA::selectFirst('apcontact', [], ['alias' => $url]);
  86                         }
  87
  88                         if (!DBA::isResult($apcontact)) {
  89                                 $apcontact = DBA::selectFirst('apcontact', [], ['addr' => $url]);
  90                         }
  91
  92                         if (DBA::isResult($apcontact) && ($apcontact['updated'] > $ref_update)) {
  93                                 return $apcontact;
  94                         }
  95
  96                         if (!is_null($update)) {
  97                                 return false;
  98                         }
  99                 }
 100
 101                 if (empty(parse_url($url, PHP_URL_SCHEME))) {
 102                         $url = self::addrToUrl($url);
 103                         if (empty($url)) {
 104                                 return false;
 105                         }
 106                 }
 107
 108                 $data = ActivityPub::fetchContent($url);
 109                 if (empty($data)) {
 110                         return false;
 111                 }
 112
 113                 $compacted = JsonLD::compact($data);
 114
 115                 if (empty($compacted['@id'])) {
 116                         return false;
 117                 }
 118
 119                 $apcontact = [];
 120                 $apcontact['url'] = $compacted['@id'];
 121                 $apcontact['uuid'] = JsonLD::fetchElement($compacted, 'diaspora:guid');
 122                 $apcontact['type'] = str_replace('as:', '', JsonLD::fetchElement($compacted, '@type'));
 123                 $apcontact['following'] = JsonLD::fetchElement($compacted, 'as:following', '@id');
 124                 $apcontact['followers'] = JsonLD::fetchElement($compacted, 'as:followers', '@id');
 125                 $apcontact['inbox'] = JsonLD::fetchElement($compacted, 'ldp:inbox', '@id');
 126                 $apcontact['outbox'] = JsonLD::fetchElement($compacted, 'as:outbox', '@id');
 127
 128                 $apcontact['sharedinbox'] = '';
 129                 if (!empty($compacted['as:endpoints'])) {
 130                         $apcontact['sharedinbox'] = JsonLD::fetchElement($compacted['as:endpoints'], 'as:sharedInbox', '@id');
 131                 }
 132
 133                 $apcontact['nick'] = JsonLD::fetchElement($compacted, 'as:preferredUsername');
 134                 $apcontact['name'] = JsonLD::fetchElement($compacted, 'as:name');
 135
 136                 if (empty($apcontact['name'])) {
 137                         $apcontact['name'] = $apcontact['nick'];
 138                 }
 139
 140                 $apcontact['about'] = HTML::toBBCode(JsonLD::fetchElement($compacted, 'as:summary'));
 141
 142                 $apcontact['photo'] = JsonLD::fetchElement($compacted, 'as:icon', '@id');
 143                 if (is_array($apcontact['photo']) || !empty($compacted['as:icon']['as:url']['@id'])) {
 144                         $apcontact['photo'] = JsonLD::fetchElement($compacted['as:icon'], 'as:url', '@id');
 145                 }
 146
 147                 $apcontact['alias'] = JsonLD::fetchElement($compacted, 'as:url', '@id');
 148                 if (is_array($apcontact['alias'])) {
 149                         $apcontact['alias'] = JsonLD::fetchElement($compacted['as:url'], 'as:href', '@id');
 150                 }
 151
 152                 if (empty($apcontact['url']) || empty($apcontact['inbox'])) {
 153                         return false;
 154                 }
 155
 156                 $parts = parse_url($apcontact['url']);
 157                 unset($parts['scheme']);
 158                 unset($parts['path']);
 159                 $apcontact['addr'] = $apcontact['nick'] . '@' . str_replace('//', '', Network::unparseURL($parts));
 160
 161                 $apcontact['pubkey'] = trim(JsonLD::fetchElement($compacted, 'w3id:publicKey', 'w3id:publicKeyPem'));
 162
 163                 $apcontact['manually-approve'] = (int)JsonLD::fetchElement($compacted, 'as:manuallyApprovesFollowers');
 164
 165                 // To-Do
 166
 167                 // Unhandled
 168                 // @context, tag, attachment, image, nomadicLocations, signature, following, followers, featured, movedTo, liked
 169
 170                 // Unhandled from Misskey
 171                 // sharedInbox, isCat
 172
 173                 // Unhandled from Kroeg
 174                 // kroeg:blocks, updated
 175
 176                 // Check if the address is resolvable
 177                 if (self::addrToUrl($apcontact['addr']) == $apcontact['url']) {
 178                         $parts = parse_url($apcontact['url']);
 179                         unset($parts['path']);
 180                         $apcontact['baseurl'] = Network::unparseURL($parts);
 181                 } else {
 182                         $apcontact['addr'] = null;
 183                         $apcontact['baseurl'] = null;
 184                 }
 185
 186                 if ($apcontact['url'] == $apcontact['alias']) {
 187                         $apcontact['alias'] = null;
 188                 }
 189
 190                 $apcontact['updated'] = DateTimeFormat::utcNow();
 191
 192                 DBA::update('apcontact', $apcontact, ['url' => $url], true);
 193
 194                 // Update some data in the contact table with various ways to catch them all
 195                 $contact_fields = ['name' => $apcontact['name'], 'about' => $apcontact['about'], 'alias' => $apcontact['alias']];
 196
 197                 // Fetch the type and match it with the contact type
 198                 $contact_types = array_keys(ActivityPub::ACCOUNT_TYPES, $apcontact['type']);
 199                 if (!empty($contact_types)) {
 200                         $contact_type = array_pop($contact_types);
 201                         if (is_int($contact_type)) {
 202                                 $contact_fields['contact-type'] = $contact_type;
 203
 204                                 if ($contact_fields['contact-type'] != User::ACCOUNT_TYPE_COMMUNITY) {
 205                                         // Resetting the 'forum' and 'prv' field when it isn't a forum
 206                                         $contact_fields['forum'] = false;
 207                                         $contact_fields['prv'] = false;
 208                                 } else {
 209                                         // Otherwise set the corresponding forum type
 210                                         $contact_fields['forum'] = !$apcontact['manually-approve'];
 211                                         $contact_fields['prv'] = $apcontact['manually-approve'];
 212                                 }
 213                         }
 214                 }
 215
 216                 DBA::update('contact', $contact_fields, ['nurl' => Strings::normaliseLink($url)]);
 217
 218                 $contacts = DBA::select('contact', ['uid', 'id'], ['nurl' => Strings::normaliseLink($url)]);
 219                 while ($contact = DBA::fetch($contacts)) {
 220                         Contact::updateAvatar($apcontact['photo'], $contact['uid'], $contact['id']);
 221                 }
 222                 DBA::close($contacts);
 223
 224                 // Update the gcontact table
 225                 // These two fields don't exist in the gcontact table
 226                 unset($contact_fields['forum']);
 227                 unset($contact_fields['prv']);
 228                 DBA::update('gcontact', $contact_fields, ['nurl' => Strings::normaliseLink($url)]);
 229
 230                 Logger::log('Updated profile for ' . $url, Logger::DEBUG);
 231
 232                 return $apcontact;
 233         }
 234 }