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  76          * @param boolean $update true = always update, false = never update, null = update when not found or outdated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