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\Core\Config;
  13 use Friendica\Database\DBA;
  14 use Friendica\Protocol\ActivityPub;
  15 use Friendica\Util\Network;
  16 use Friendica\Util\JsonLD;
  17 use Friendica\Util\DateTimeFormat;
  18 use Friendica\Util\Strings;
  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          * @param string $url profile URL. When set then we return "true" when this profile url can be found at the address
  27          * @return string|boolean url
  28          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
  29          */
  30         private static function addrToUrl($addr, $url = null)
  31         {
  32                 $addr_parts = explode('@', $addr);
  33                 if (count($addr_parts) != 2) {
  34                         return false;
  35                 }
  36
  37                 $xrd_timeout = Config::get('system', 'xrd_timeout');
  38
  39                 $webfinger = 'https://' . $addr_parts[1] . '/.well-known/webfinger?resource=acct:' . urlencode($addr);
  40
  41                 $curlResult = Network::curl($webfinger, false, ['timeout' => $xrd_timeout, 'accept_content' => 'application/jrd+json,application/json']);
  42                 if (!$curlResult->isSuccess() || empty($curlResult->getBody())) {
  43                         $webfinger = 'http://' . $addr_parts[1] . '/.well-known/webfinger?resource=acct:' . urlencode($addr);
  44
  45                         $curlResult = Network::curl($webfinger, false, ['timeout' => $xrd_timeout, 'accept_content' => 'application/jrd+json,application/json']);
  46
  47                         if (!$curlResult->isSuccess() || empty($curlResult->getBody())) {
  48                                 return false;
  49                         }
  50                 }
  51
  52                 $data = json_decode($curlResult->getBody(), true);
  53
  54                 if (empty($data['links'])) {
  55                         return false;
  56                 }
  57
  58                 foreach ($data['links'] as $link) {
  59                         if (!empty($url) && !empty($link['href']) && ($link['href'] == $url)) {
  60                                 return true;
  61                         }
  62
  63                         if (empty($link['href']) || empty($link['rel']) || empty($link['type'])) {
  64                                 continue;
  65                         }
  66
  67                         if (empty($url) && ($link['rel'] == 'self') && ($link['type'] == 'application/activity+json')) {
  68                                 return $link['href'];
  69                         }
  70                 }
  71
  72                 return false;
  73         }
  74
  75         /**
  76          * Fetches a profile from a given url
  77          *
  78          * @param string  $url    profile url
  79          * @param boolean $update true = always update, false = never update, null = update when not found or outdated
  80          * @return array profile array
  81          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
  82          * @throws \ImagickException
  83          */
  84         public static function getByURL($url, $update = null)
  85         {
  86                 if (empty($url)) {
  87                         return false;
  88                 }
  89
  90                 if (empty($update)) {
  91                         if (is_null($update)) {
  92                                 $ref_update = DateTimeFormat::utc('now - 1 month');
  93                         } else {
  94                                 $ref_update = DBA::NULL_DATETIME;
  95                         }
  96
  97                         $apcontact = DBA::selectFirst('apcontact', [], ['url' => $url]);
  98                         if (!DBA::isResult($apcontact)) {
  99                                 $apcontact = DBA::selectFirst('apcontact', [], ['alias' => $url]);
 100                         }
 101
 102                         if (!DBA::isResult($apcontact)) {
 103                                 $apcontact = DBA::selectFirst('apcontact', [], ['addr' => $url]);
 104                         }
 105
 106                         if (DBA::isResult($apcontact) && ($apcontact['updated'] > $ref_update) && !empty($apcontact['pubkey'])) {
 107                                 return $apcontact;
 108                         }
 109
 110                         if (!is_null($update)) {
 111                                 return DBA::isResult($apcontact) ? $apcontact : false;
 112                         }
 113                 }
 114
 115                 if (empty(parse_url($url, PHP_URL_SCHEME))) {
 116                         $url = self::addrToUrl($url);
 117                         if (empty($url)) {
 118                                 return false;
 119                         }
 120                 }
 121
 122                 $data = ActivityPub::fetchContent($url);
 123                 if (empty($data)) {
 124                         return false;
 125                 }
 126
 127                 $compacted = JsonLD::compact($data);
 128
 129                 if (empty($compacted['@id'])) {
 130                         return false;
 131                 }
 132
 133                 $apcontact = [];
 134                 $apcontact['url'] = $compacted['@id'];
 135                 $apcontact['uuid'] = JsonLD::fetchElement($compacted, 'diaspora:guid', '@value');
 136                 $apcontact['type'] = str_replace('as:', '', JsonLD::fetchElement($compacted, '@type'));
 137                 $apcontact['following'] = JsonLD::fetchElement($compacted, 'as:following', '@id');
 138                 $apcontact['followers'] = JsonLD::fetchElement($compacted, 'as:followers', '@id');
 139                 $apcontact['inbox'] = JsonLD::fetchElement($compacted, 'ldp:inbox', '@id');
 140                 self::unarchiveInbox($apcontact['inbox'], false);
 141
 142                 $apcontact['outbox'] = JsonLD::fetchElement($compacted, 'as:outbox', '@id');
 143
 144                 $apcontact['sharedinbox'] = '';
 145                 if (!empty($compacted['as:endpoints'])) {
 146                         $apcontact['sharedinbox'] = JsonLD::fetchElement($compacted['as:endpoints'], 'as:sharedInbox', '@id');
 147                         self::unarchiveInbox($apcontact['sharedinbox'], true);
 148                 }
 149
 150                 $apcontact['nick'] = JsonLD::fetchElement($compacted, 'as:preferredUsername', '@value');
 151                 $apcontact['name'] = JsonLD::fetchElement($compacted, 'as:name', '@value');
 152
 153                 if (empty($apcontact['name'])) {
 154                         $apcontact['name'] = $apcontact['nick'];
 155                 }
 156
 157                 $apcontact['about'] = HTML::toBBCode(JsonLD::fetchElement($compacted, 'as:summary', '@value'));
 158
 159                 $apcontact['photo'] = JsonLD::fetchElement($compacted, 'as:icon', '@id');
 160                 if (is_array($apcontact['photo']) || !empty($compacted['as:icon']['as:url']['@id'])) {
 161                         $apcontact['photo'] = JsonLD::fetchElement($compacted['as:icon'], 'as:url', '@id');
 162                 }
 163
 164                 $apcontact['alias'] = JsonLD::fetchElement($compacted, 'as:url', '@id');
 165                 if (is_array($apcontact['alias'])) {
 166                         $apcontact['alias'] = JsonLD::fetchElement($compacted['as:url'], 'as:href', '@id');
 167                 }
 168
 169                 // Quit if none of the basic values are set
 170                 if (empty($apcontact['url']) || empty($apcontact['inbox']) || empty($apcontact['type'])) {
 171                         return false;
 172                 }
 173
 174                 // Quit if this doesn't seem to be an account at all
 175                 if (!in_array($apcontact['type'], ActivityPub::ACCOUNT_TYPES)) {
 176                         return false;
 177                 }
 178
 179                 $parts = parse_url($apcontact['url']);
 180                 unset($parts['scheme']);
 181                 unset($parts['path']);
 182                 $apcontact['addr'] = $apcontact['nick'] . '@' . str_replace('//', '', Network::unparseURL($parts));
 183
 184                 if (!empty($compacted['w3id:publicKey'])) {
 185                         $apcontact['pubkey'] = trim(JsonLD::fetchElement($compacted['w3id:publicKey'], 'w3id:publicKeyPem', '@value'));
 186                 }
 187
 188                 $apcontact['manually-approve'] = (int)JsonLD::fetchElement($compacted, 'as:manuallyApprovesFollowers');
 189
 190                 if (!empty($compacted['as:generator'])) {
 191                         $apcontact['baseurl'] = JsonLD::fetchElement($compacted['as:generator'], 'as:url', '@id');
 192                         $apcontact['generator'] = JsonLD::fetchElement($compacted['as:generator'], 'as:name', '@value');
 193                 }
 194
 195                 // To-Do
 196
 197                 // Unhandled
 198                 // tag, attachment, image, nomadicLocations, signature, featured, movedTo, liked
 199
 200                 // Unhandled from Misskey
 201                 // sharedInbox, isCat
 202
 203                 // Unhandled from Kroeg
 204                 // kroeg:blocks, updated
 205
 206                 $parts = parse_url($apcontact['url']);
 207                 unset($parts['path']);
 208                 $baseurl = Network::unparseURL($parts);
 209
 210                 // Check if the address is resolvable or the profile url is identical with the base url of the system
 211                 if (self::addrToUrl($apcontact['addr'], $apcontact['url']) || Strings::compareLink($apcontact['url'], $baseurl)) {
 212                         $apcontact['baseurl'] = $baseurl;
 213                 } else {
 214                         $apcontact['addr'] = null;
 215                 }
 216
 217                 if (empty($apcontact['baseurl'])) {
 218                         $apcontact['baseurl'] = null;
 219                 }
 220
 221                 if ($apcontact['url'] == $apcontact['alias']) {
 222                         $apcontact['alias'] = null;
 223                 }
 224
 225                 $apcontact['updated'] = DateTimeFormat::utcNow();
 226
 227                 DBA::update('apcontact', $apcontact, ['url' => $url], true);
 228
 229                 // We delete the old entry when the URL is changed
 230                 if (($url != $apcontact['url']) && DBA::exists('apcontact', ['url' => $url]) && DBA::exists('apcontact', ['url' => $apcontact['url']])) {
 231                         DBA::delete('apcontact', ['url' => $url]);
 232                 }
 233
 234                 // Update some data in the contact table with various ways to catch them all
 235                 $contact_fields = ['name' => $apcontact['name'], 'about' => $apcontact['about'], 'alias' => $apcontact['alias']];
 236
 237                 // Fetch the type and match it with the contact type
 238                 $contact_types = array_keys(ActivityPub::ACCOUNT_TYPES, $apcontact['type']);
 239                 if (!empty($contact_types)) {
 240                         $contact_type = array_pop($contact_types);
 241                         if (is_int($contact_type)) {
 242                                 $contact_fields['contact-type'] = $contact_type;
 243
 244                                 if ($contact_fields['contact-type'] != User::ACCOUNT_TYPE_COMMUNITY) {
 245                                         // Resetting the 'forum' and 'prv' field when it isn't a forum
 246                                         $contact_fields['forum'] = false;
 247                                         $contact_fields['prv'] = false;
 248                                 } else {
 249                                         // Otherwise set the corresponding forum type
 250                                         $contact_fields['forum'] = !$apcontact['manually-approve'];
 251                                         $contact_fields['prv'] = $apcontact['manually-approve'];
 252                                 }
 253                         }
 254                 }
 255
 256                 DBA::update('contact', $contact_fields, ['nurl' => Strings::normaliseLink($url)]);
 257
 258                 if (!empty($apcontact['photo'])) {
 259                         $contacts = DBA::select('contact', ['uid', 'id'], ['nurl' => Strings::normaliseLink($url)]);
 260                         while ($contact = DBA::fetch($contacts)) {
 261                                 Contact::updateAvatar($apcontact['photo'], $contact['uid'], $contact['id']);
 262                         }
 263                         DBA::close($contacts);
 264                 }
 265
 266                 // Update the gcontact table
 267                 // These two fields don't exist in the gcontact table
 268                 unset($contact_fields['forum']);
 269                 unset($contact_fields['prv']);
 270                 DBA::update('gcontact', $contact_fields, ['nurl' => Strings::normaliseLink($url)]);
 271
 272                 Logger::log('Updated profile for ' . $url, Logger::DEBUG);
 273
 274                 return $apcontact;
 275         }
 276
 277         /**
 278          * Unarchive inboxes
 279          *
 280          * @param string $url inbox url
 281          */
 282         private static function unarchiveInbox($url, $shared)
 283         {
 284                 if (empty($url)) {
 285                         return;
 286                 }
 287
 288                 $now = DateTimeFormat::utcNow();
 289
 290                 $fields = ['archive' => false, 'success' => $now, 'shared' => $shared];
 291
 292                 if (!DBA::exists('inbox-status', ['url' => $url])) {
 293                         $fields = array_merge($fields, ['url' => $url, 'created' => $now]);
 294                         DBA::insert('inbox-status', $fields);
 295                 } else {
 296                         DBA::update('inbox-status', $fields, ['url' => $url]);
 297                 }
 298         }
 299 }