src/Model/APContact.php

   1 <?php
   2
   3 /**
   4  * @file src/Model/APContact.php
   5  */
   6
   7 namespace Friendica\Model;
   8
   9 use Friendica\Content\Text\HTML;
  10 use Friendica\Core\Logger;
  11 use Friendica\Database\DBA;
  12 use Friendica\DI;
  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
  20 {
  21         /**
  22          * Resolves the profile url from the address by using webfinger
  23          *
  24          * @param string $addr profile address (user@domain.tld)
  25          * @param string $url profile URL. When set then we return "true" when this profile url can be found at the address
  26          * @return string|boolean url
  27          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
  28          */
  29         private static function addrToUrl($addr, $url = null)
  30         {
  31                 $addr_parts = explode('@', $addr);
  32                 if (count($addr_parts) != 2) {
  33                         return false;
  34                 }
  35
  36                 $xrd_timeout = DI::config()->get('system', 'xrd_timeout');
  37
  38                 $webfinger = 'https://' . $addr_parts[1] . '/.well-known/webfinger?resource=acct:' . urlencode($addr);
  39
  40                 $curlResult = Network::curl($webfinger, false, ['timeout' => $xrd_timeout, 'accept_content' => 'application/jrd+json,application/json']);
  41                 if (!$curlResult->isSuccess() || empty($curlResult->getBody())) {
  42                         $webfinger = Strings::normaliseLink($webfinger);
  43
  44                         $curlResult = Network::curl($webfinger, false, ['timeout' => $xrd_timeout, 'accept_content' => 'application/jrd+json,application/json']);
  45
  46                         if (!$curlResult->isSuccess() || empty($curlResult->getBody())) {
  47                                 return false;
  48                         }
  49                 }
  50
  51                 $data = json_decode($curlResult->getBody(), true);
  52
  53                 if (empty($data['links'])) {
  54                         return false;
  55                 }
  56
  57                 foreach ($data['links'] as $link) {
  58                         if (!empty($url) && !empty($link['href']) && ($link['href'] == $url)) {
  59                                 return true;
  60                         }
  61
  62                         if (empty($link['href']) || empty($link['rel']) || empty($link['type'])) {
  63                                 continue;
  64                         }
  65
  66                         if (empty($url) && ($link['rel'] == 'self') && ($link['type'] == 'application/activity+json')) {
  67                                 return $link['href'];
  68                         }
  69                 }
  70
  71                 return false;
  72         }
  73
  74         /**
  75          * Fetches a profile from a given url
  76          *
  77          * @param string  $url    profile url
  78          * @param boolean $update true = always update, false = never update, null = update when not found or outdated
  79          * @return array profile array
  80          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
  81          * @throws \ImagickException
  82          */
  83         public static function getByURL($url, $update = null)
  84         {
  85                 if (empty($url)) {
  86                         return [];
  87                 }
  88
  89                 $fetched_contact = false;
  90
  91                 if (empty($update)) {
  92                         if (is_null($update)) {
  93                                 $ref_update = DateTimeFormat::utc('now - 1 month');
  94                         } else {
  95                                 $ref_update = DBA::NULL_DATETIME;
  96                         }
  97
  98                         $apcontact = DBA::selectFirst('apcontact', [], ['url' => $url]);
  99                         if (!DBA::isResult($apcontact)) {
 100                                 $apcontact = DBA::selectFirst('apcontact', [], ['alias' => $url]);
 101                         }
 102
 103                         if (!DBA::isResult($apcontact)) {
 104                                 $apcontact = DBA::selectFirst('apcontact', [], ['addr' => $url]);
 105                         }
 106
 107                         if (DBA::isResult($apcontact) && ($apcontact['updated'] > $ref_update) && !empty($apcontact['pubkey'])) {
 108                                 return $apcontact;
 109                         }
 110
 111                         if (!is_null($update)) {
 112                                 return DBA::isResult($apcontact) ? $apcontact : [];
 113                         }
 114
 115                         if (DBA::isResult($apcontact)) {
 116                                 $fetched_contact = $apcontact;
 117                         }
 118                 }
 119
 120                 if (empty(parse_url($url, PHP_URL_SCHEME))) {
 121                         $url = self::addrToUrl($url);
 122                         if (empty($url)) {
 123                                 return $fetched_contact;
 124                         }
 125                 }
 126
 127                 $data = ActivityPub::fetchContent($url);
 128                 if (empty($data)) {
 129                         return $fetched_contact;
 130                 }
 131
 132                 $compacted = JsonLD::compact($data);
 133
 134                 if (empty($compacted['@id'])) {
 135                         return $fetched_contact;
 136                 }
 137
 138                 $apcontact = [];
 139                 $apcontact['url'] = $compacted['@id'];
 140                 $apcontact['uuid'] = JsonLD::fetchElement($compacted, 'diaspora:guid', '@value');
 141                 $apcontact['type'] = str_replace('as:', '', JsonLD::fetchElement($compacted, '@type'));
 142                 $apcontact['following'] = JsonLD::fetchElement($compacted, 'as:following', '@id');
 143                 $apcontact['followers'] = JsonLD::fetchElement($compacted, 'as:followers', '@id');
 144                 $apcontact['inbox'] = JsonLD::fetchElement($compacted, 'ldp:inbox', '@id');
 145                 self::unarchiveInbox($apcontact['inbox'], false);
 146
 147                 $apcontact['outbox'] = JsonLD::fetchElement($compacted, 'as:outbox', '@id');
 148
 149                 $apcontact['sharedinbox'] = '';
 150                 if (!empty($compacted['as:endpoints'])) {
 151                         $apcontact['sharedinbox'] = JsonLD::fetchElement($compacted['as:endpoints'], 'as:sharedInbox', '@id');
 152                         self::unarchiveInbox($apcontact['sharedinbox'], true);
 153                 }
 154
 155                 $apcontact['nick'] = JsonLD::fetchElement($compacted, 'as:preferredUsername', '@value') ?? '';
 156                 $apcontact['name'] = JsonLD::fetchElement($compacted, 'as:name', '@value');
 157
 158                 if (empty($apcontact['name'])) {
 159                         $apcontact['name'] = $apcontact['nick'];
 160                 }
 161
 162                 $apcontact['about'] = HTML::toBBCode(JsonLD::fetchElement($compacted, 'as:summary', '@value'));
 163
 164                 $apcontact['photo'] = JsonLD::fetchElement($compacted, 'as:icon', '@id');
 165                 if (is_array($apcontact['photo']) || !empty($compacted['as:icon']['as:url']['@id'])) {
 166                         $apcontact['photo'] = JsonLD::fetchElement($compacted['as:icon'], 'as:url', '@id');
 167                 }
 168
 169                 $apcontact['alias'] = JsonLD::fetchElement($compacted, 'as:url', '@id');
 170                 if (is_array($apcontact['alias'])) {
 171                         $apcontact['alias'] = JsonLD::fetchElement($compacted['as:url'], 'as:href', '@id');
 172                 }
 173
 174                 // Quit if none of the basic values are set
 175                 if (empty($apcontact['url']) || empty($apcontact['inbox']) || empty($apcontact['type'])) {
 176                         return $fetched_contact;
 177                 }
 178
 179                 // Quit if this doesn't seem to be an account at all
 180                 if (!in_array($apcontact['type'], ActivityPub::ACCOUNT_TYPES)) {
 181                         return $fetched_contact;
 182                 }
 183
 184                 $parts = parse_url($apcontact['url']);
 185                 unset($parts['scheme']);
 186                 unset($parts['path']);
 187
 188                 if (!empty($apcontact['nick'])) {
 189                         $apcontact['addr'] = $apcontact['nick'] . '@' . str_replace('//', '', Network::unparseURL($parts));
 190                 } else {
 191                         $apcontact['addr'] = '';
 192                 }
 193
 194                 $apcontact['pubkey'] = null;
 195                 if (!empty($compacted['w3id:publicKey'])) {
 196                         $apcontact['pubkey'] = trim(JsonLD::fetchElement($compacted['w3id:publicKey'], 'w3id:publicKeyPem', '@value'));
 197                 }
 198
 199                 $apcontact['manually-approve'] = (int)JsonLD::fetchElement($compacted, 'as:manuallyApprovesFollowers');
 200
 201                 if (!empty($compacted['as:generator'])) {
 202                         $apcontact['baseurl'] = JsonLD::fetchElement($compacted['as:generator'], 'as:url', '@id');
 203                         $apcontact['generator'] = JsonLD::fetchElement($compacted['as:generator'], 'as:name', '@value');
 204                 }
 205
 206                 if (!empty($apcontact['following'])) {
 207                         $data = ActivityPub::fetchContent($apcontact['following']);
 208                         if (!empty($data)) {
 209                                 if (!empty($data['totalItems'])) {
 210                                         $apcontact['following_count'] = $data['totalItems'];
 211                                 }
 212                         }
 213                 }
 214
 215                 if (!empty($apcontact['followers'])) {
 216                         $data = ActivityPub::fetchContent($apcontact['followers']);
 217                         if (!empty($data)) {
 218                                 if (!empty($data['totalItems'])) {
 219                                         $apcontact['followers_count'] = $data['totalItems'];
 220                                 }
 221                         }
 222                 }
 223
 224                 if (!empty($apcontact['outbox'])) {
 225                         $data = ActivityPub::fetchContent($apcontact['outbox']);
 226                         if (!empty($data)) {
 227                                 if (!empty($data['totalItems'])) {
 228                                         $apcontact['statuses_count'] = $data['totalItems'];
 229                                 }
 230                         }
 231                 }
 232
 233                 // To-Do
 234
 235                 // Unhandled
 236                 // tag, attachment, image, nomadicLocations, signature, featured, movedTo, liked
 237
 238                 // Unhandled from Misskey
 239                 // sharedInbox, isCat
 240
 241                 // Unhandled from Kroeg
 242                 // kroeg:blocks, updated
 243
 244                 $parts = parse_url($apcontact['url']);
 245                 unset($parts['path']);
 246                 $baseurl = Network::unparseURL($parts);
 247
 248                 // Check if the address is resolvable or the profile url is identical with the base url of the system
 249                 if (self::addrToUrl($apcontact['addr'], $apcontact['url']) || Strings::compareLink($apcontact['url'], $baseurl)) {
 250                         $apcontact['baseurl'] = $baseurl;
 251                 } else {
 252                         $apcontact['addr'] = null;
 253                 }
 254
 255                 if (empty($apcontact['baseurl'])) {
 256                         $apcontact['baseurl'] = null;
 257                 }
 258
 259                 if ($apcontact['url'] == $apcontact['alias']) {
 260                         $apcontact['alias'] = null;
 261                 }
 262
 263                 $apcontact['updated'] = DateTimeFormat::utcNow();
 264
 265                 DBA::update('apcontact', $apcontact, ['url' => $url], true);
 266
 267                 // We delete the old entry when the URL is changed
 268                 if (($url != $apcontact['url']) && DBA::exists('apcontact', ['url' => $url]) && DBA::exists('apcontact', ['url' => $apcontact['url']])) {
 269                         DBA::delete('apcontact', ['url' => $url]);
 270                 }
 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 }