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, ['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  65          * @param boolean $update true = always update, false = never update, null = update when not found or outdated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'] > $ref_update) && !empty($apcontact['pubkey'])) {
  93                                 return $apcontact;
  94                         }
  95
  96                         if (!is_null($update)) {
  97                                 return DBA::isResult($apcontact) ? $apcontact : false;
  98                         }
  99                 }
 100
 101                 if (empty(parse_url($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', '@value');
 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                 self::unarchiveInbox($apcontact['inbox'], false);
 127
 128                 $apcontact['outbox'] = JsonLD::fetchElement($compacted, 'as:outbox', '@id');
 129
 130                 $apcontact['sharedinbox'] = '';
 131                 if (!empty($compacted['as:endpoints'])) {
 132                         $apcontact['sharedinbox'] = JsonLD::fetchElement($compacted['as:endpoints'], 'as:sharedInbox', '@id');
 133                         self::unarchiveInbox($apcontact['sharedinbox'], true);
 134                 }
 135
 136                 $apcontact['nick'] = JsonLD::fetchElement($compacted, 'as:preferredUsername', '@value');
 137                 $apcontact['name'] = JsonLD::fetchElement($compacted, 'as:name', '@value');
 138
 139                 if (empty($apcontact['name'])) {
 140                         $apcontact['name'] = $apcontact['nick'];
 141                 }
 142
 143                 $apcontact['about'] = HTML::toBBCode(JsonLD::fetchElement($compacted, 'as:summary', '@value'));
 144
 145                 $apcontact['photo'] = JsonLD::fetchElement($compacted, 'as:icon', '@id');
 146                 if (is_array($apcontact['photo']) || !empty($compacted['as:icon']['as:url']['@id'])) {
 147                         $apcontact['photo'] = JsonLD::fetchElement($compacted['as:icon'], 'as:url', '@id');
 148                 }
 149
 150                 $apcontact['alias'] = JsonLD::fetchElement($compacted, 'as:url', '@id');
 151                 if (is_array($apcontact['alias'])) {
 152                         $apcontact['alias'] = JsonLD::fetchElement($compacted['as:url'], 'as:href', '@id');
 153                 }
 154
 155                 // Quit if none of the basic values are set
 156                 if (empty($apcontact['url']) || empty($apcontact['inbox']) || empty($apcontact['type'])) {
 157                         return false;
 158                 }
 159
 160                 // Quit if this doesn't seem to be an account at all
 161                 if (!in_array($apcontact['type'], ActivityPub::ACCOUNT_TYPES)) {
 162                         return false;
 163                 }
 164
 165                 $parts = parse_url($apcontact['url']);
 166                 unset($parts['scheme']);
 167                 unset($parts['path']);
 168                 $apcontact['addr'] = $apcontact['nick'] . '@' . str_replace('//', '', Network::unparseURL($parts));
 169
 170                 if (!empty($compacted['w3id:publicKey'])) {
 171                         $apcontact['pubkey'] = trim(JsonLD::fetchElement($compacted['w3id:publicKey'], 'w3id:publicKeyPem', '@value'));
 172                 }
 173
 174                 $apcontact['manually-approve'] = (int)JsonLD::fetchElement($compacted, 'as:manuallyApprovesFollowers');
 175
 176                 if (!empty($compacted['as:generator'])) {
 177                         $apcontact['baseurl'] = JsonLD::fetchElement($compacted['as:generator'], 'as:url', '@id');
 178                         $apcontact['generator'] = JsonLD::fetchElement($compacted['as:generator'], 'as:name', '@value');
 179                 }
 180
 181                 // To-Do
 182
 183                 // Unhandled
 184                 // tag, attachment, image, nomadicLocations, signature, featured, movedTo, liked
 185
 186                 // Unhandled from Misskey
 187                 // sharedInbox, isCat
 188
 189                 // Unhandled from Kroeg
 190                 // kroeg:blocks, updated
 191
 192                 // Check if the address is resolvable
 193                 if (self::addrToUrl($apcontact['addr']) == $apcontact['url']) {
 194                         $parts = parse_url($apcontact['url']);
 195                         unset($parts['path']);
 196                         $apcontact['baseurl'] = Network::unparseURL($parts);
 197                 } else {
 198                         $apcontact['addr'] = null;
 199                 }
 200
 201                 if (empty($apcontact['baseurl'])) {
 202                         $apcontact['baseurl'] = null;
 203                 }
 204
 205                 if ($apcontact['url'] == $apcontact['alias']) {
 206                         $apcontact['alias'] = null;
 207                 }
 208
 209                 $apcontact['updated'] = DateTimeFormat::utcNow();
 210
 211                 DBA::update('apcontact', $apcontact, ['url' => $url], true);
 212
 213                 // Update some data in the contact table with various ways to catch them all
 214                 $contact_fields = ['name' => $apcontact['name'], 'about' => $apcontact['about'], 'alias' => $apcontact['alias']];
 215
 216                 // Fetch the type and match it with the contact type
 217                 $contact_types = array_keys(ActivityPub::ACCOUNT_TYPES, $apcontact['type']);
 218                 if (!empty($contact_types)) {
 219                         $contact_type = array_pop($contact_types);
 220                         if (is_int($contact_type)) {
 221                                 $contact_fields['contact-type'] = $contact_type;
 222
 223                                 if ($contact_fields['contact-type'] != User::ACCOUNT_TYPE_COMMUNITY) {
 224                                         // Resetting the 'forum' and 'prv' field when it isn't a forum
 225                                         $contact_fields['forum'] = false;
 226                                         $contact_fields['prv'] = false;
 227                                 } else {
 228                                         // Otherwise set the corresponding forum type
 229                                         $contact_fields['forum'] = !$apcontact['manually-approve'];
 230                                         $contact_fields['prv'] = $apcontact['manually-approve'];
 231                                 }
 232                         }
 233                 }
 234
 235                 DBA::update('contact', $contact_fields, ['nurl' => Strings::normaliseLink($url)]);
 236
 237                 if (!empty($apcontact['photo'])) {
 238                         $contacts = DBA::select('contact', ['uid', 'id'], ['nurl' => Strings::normaliseLink($url)]);
 239                         while ($contact = DBA::fetch($contacts)) {
 240                                 Contact::updateAvatar($apcontact['photo'], $contact['uid'], $contact['id']);
 241                         }
 242                         DBA::close($contacts);
 243                 }
 244
 245                 // Update the gcontact table
 246                 // These two fields don't exist in the gcontact table
 247                 unset($contact_fields['forum']);
 248                 unset($contact_fields['prv']);
 249                 DBA::update('gcontact', $contact_fields, ['nurl' => Strings::normaliseLink($url)]);
 250
 251                 Logger::log('Updated profile for ' . $url, Logger::DEBUG);
 252
 253                 return $apcontact;
 254         }
 255
 256         /**
 257          * Unarchive inboxes
 258          *
 259          * @param string $url inbox url
 260          */
 261         private static function unarchiveInbox($url, $shared)
 262         {
 263                 if (empty($url)) {
 264                         return;
 265                 }
 266
 267                 $now = DateTimeFormat::utcNow();
 268
 269                 $fields = ['archive' => false, 'success' => $now, 'shared' => $shared];
 270
 271                 if (!DBA::exists('inbox-status', ['url' => $url])) {
 272                         $fields = array_merge($fields, ['url' => $url, 'created' => $now]);
 273                         DBA::insert('inbox-status', $fields);
 274                 } else {
 275                         DBA::update('inbox-status', $fields, ['url' => $url]);
 276                 }
 277         }
 278 }