. * */ namespace Friendica\Model; use Friendica\Content\Text\BBCode; use Friendica\Content\Text\HTML; use Friendica\Core\Hook; use Friendica\Core\Logger; use Friendica\Core\Protocol; use Friendica\Core\Renderer; use Friendica\Core\Session; use Friendica\Core\System; use Friendica\Model\Tag; use Friendica\Core\Worker; use Friendica\Database\DBA; use Friendica\DI; use Friendica\Model\Post; use Friendica\Protocol\Activity; use Friendica\Protocol\ActivityPub; use Friendica\Protocol\Diaspora; use Friendica\Util\DateTimeFormat; use Friendica\Util\Map; use Friendica\Util\Network; use Friendica\Util\Strings; use Friendica\Worker\Delivery; use LanguageDetection\Language; class Item { // Posting types, inspired by https://www.w3.org/TR/activitystreams-vocabulary/#object-types const PT_ARTICLE = 0; const PT_NOTE = 1; const PT_PAGE = 2; const PT_IMAGE = 16; const PT_AUDIO = 17; const PT_VIDEO = 18; const PT_DOCUMENT = 19; const PT_EVENT = 32; const PT_TAG = 64; const PT_TO = 65; const PT_CC = 66; const PT_BTO = 67; const PT_BCC = 68; const PT_FOLLOWER = 69; const PT_ANNOUNCEMENT = 70; const PT_COMMENT = 71; const PT_STORED = 72; const PT_GLOBAL = 73; const PT_RELAY = 74; const PT_FETCHED = 75; const PT_PERSONAL_NOTE = 128; // Field list that is used to display the items const DISPLAY_FIELDLIST = [ 'uid', 'id', 'parent', 'guid', 'network', 'gravity', 'uri-id', 'uri', 'thr-parent-id', 'thr-parent', 'parent-uri-id', 'parent-uri', 'commented', 'created', 'edited', 'received', 'verb', 'object-type', 'postopts', 'plink', 'wall', 'private', 'starred', 'origin', 'parent-origin', 'title', 'body', 'language', 'content-warning', 'location', 'coord', 'app', 'rendered-hash', 'rendered-html', 'object', 'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid', 'mention', 'author-id', 'author-link', 'author-name', 'author-avatar', 'author-network', 'owner-id', 'owner-link', 'owner-name', 'owner-avatar', 'owner-network', 'owner-contact-type', 'causer-id', 'causer-link', 'causer-name', 'causer-avatar', 'causer-contact-type', 'causer-network', 'contact-id', 'contact-uid', 'contact-link', 'contact-name', 'contact-avatar', 'writable', 'self', 'cid', 'alias', 'event-created', 'event-edited', 'event-start', 'event-finish', 'event-summary', 'event-desc', 'event-location', 'event-type', 'event-nofinish', 'event-adjust', 'event-ignore', 'event-id', 'delivery_queue_count', 'delivery_queue_done', 'delivery_queue_failed' ]; // Field list that is used to deliver items via the protocols const DELIVER_FIELDLIST = ['uid', 'id', 'parent', 'uri-id', 'uri', 'thr-parent', 'parent-uri', 'guid', 'parent-guid', 'received', 'created', 'edited', 'verb', 'object-type', 'object', 'target', 'private', 'title', 'body', 'raw-body', 'location', 'coord', 'app', 'inform', 'deleted', 'extid', 'post-type', 'gravity', 'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid', 'author-id', 'author-link', 'author-name', 'author-avatar', 'owner-id', 'owner-link', 'contact-uid', 'signed_text', 'network', 'wall', 'contact-id', 'plink', 'forum_mode', 'origin', 'thr-parent-id', 'parent-uri-id', 'postopts', 'pubmail', 'event-created', 'event-edited', 'event-start', 'event-finish', 'event-summary', 'event-desc', 'event-location', 'event-type', 'event-nofinish', 'event-adjust', 'event-ignore', 'event-id']; // All fields in the item table const ITEM_FIELDLIST = ['id', 'uid', 'parent', 'uri', 'parent-uri', 'thr-parent', 'guid', 'uri-id', 'parent-uri-id', 'thr-parent-id', 'vid', 'contact-id', 'wall', 'gravity', 'extid', 'psid', 'created', 'edited', 'commented', 'received', 'changed', 'verb', 'postopts', 'plink', 'resource-id', 'event-id', 'inform', 'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid', 'post-type', 'private', 'pubmail', 'visible', 'starred', 'unseen', 'deleted', 'origin', 'forum_mode', 'mention', 'global', 'network', 'title', 'content-warning', 'body', 'location', 'coord', 'app', 'rendered-hash', 'rendered-html', 'object-type', 'object', 'target-type', 'target', 'author-id', 'author-link', 'author-name', 'author-avatar', 'author-network', 'owner-id', 'owner-link', 'owner-name', 'owner-avatar', 'causer-id']; // List of all verbs that don't need additional content data. // Never reorder or remove entries from this list. Just add new ones at the end, if needed. const ACTIVITIES = [ Activity::LIKE, Activity::DISLIKE, Activity::ATTEND, Activity::ATTENDNO, Activity::ATTENDMAYBE, Activity::FOLLOW, Activity::ANNOUNCE]; const PUBLIC = 0; const PRIVATE = 1; const UNLISTED = 2; /** * Update existing item entries * * @param array $fields The fields that are to be changed * @param array $condition The condition for finding the item entries * * In the future we may have to change permissions as well. * Then we had to add the user id as third parameter. * * A return value of "0" doesn't mean an error - but that 0 rows had been changed. * * @return integer|boolean number of affected rows - or "false" if there was an error * @throws \Friendica\Network\HTTPException\InternalServerErrorException */ public static function update(array $fields, array $condition) { if (empty($condition) || empty($fields)) { return false; } if (!empty($fields['verb'])) { $fields['vid'] = Verb::getID($fields['verb']); } $rows = Post::update($fields, $condition); if (is_bool($rows)) { return $rows; } // We only need to call the line by line update for specific fields if (empty($fields['body']) && empty($fields['file']) && empty($fields['attach']) && empty($fields['edited'])) { return $rows; } Logger::info('Updating per single row method', ['fields' => $fields, 'condition' => $condition]); $items = Post::select(['id', 'origin', 'uri-id', 'uid'], $condition); $notify_items = []; while ($item = DBA::fetch($items)) { if (!empty($fields['body'])) { $content_fields = ['raw-body' => trim($fields['raw-body'] ?? $fields['body'])]; // Remove all media attachments from the body and store them in the post-media table $content_fields['raw-body'] = Post\Media::insertFromBody($item['uri-id'], $content_fields['raw-body']); $content_fields['raw-body'] = self::setHashtags($content_fields['raw-body']); } if (!empty($fields['file'])) { Post\Category::storeTextByURIId($item['uri-id'], $item['uid'], $fields['file']); } if (!empty($fields['attach'])) { Post\Media::insertFromAttachment($item['uri-id'], $fields['attach']); } // We only need to notfiy others when it is an original entry from us. // Only call the notifier when the item has some content relevant change. if ($item['origin'] && in_array('edited', array_keys($fields))) { $notify_items[] = $item['id']; } } DBA::close($items); foreach ($notify_items as $notify_item) { $post = Post::selectFirst(['uri-id', 'uid'], ['id' => $notify_item]); Worker::add(PRIORITY_HIGH, "Notifier", Delivery::POST, (int)$post['uri-id'], (int)$post['uid']); } return $rows; } /** * Delete an item and notify others about it - if it was ours * * @param array $condition The condition for finding the item entries * @param integer $priority Priority for the notification * @throws \Friendica\Network\HTTPException\InternalServerErrorException */ public static function markForDeletion($condition, $priority = PRIORITY_HIGH) { $items = Post::select(['id'], $condition); while ($item = Post::fetch($items)) { self::markForDeletionById($item['id'], $priority); } DBA::close($items); } /** * Delete an item for an user and notify others about it - if it was ours * * @param array $condition The condition for finding the item entries * @param integer $uid User who wants to delete this item * @throws \Friendica\Network\HTTPException\InternalServerErrorException */ public static function deleteForUser($condition, $uid) { if ($uid == 0) { return; } $items = Post::select(['id', 'uid', 'uri-id'], $condition); while ($item = Post::fetch($items)) { if (in_array($item['uid'], [$uid, 0])) { Post\User::update($item['uri-id'], $uid, ['hidden' => true], true); Post\ThreadUser::update($item['uri-id'], $uid, ['hidden' => true], true); } if ($item['uid'] == $uid) { self::markForDeletionById($item['id'], PRIORITY_HIGH); } elseif ($item['uid'] != 0) { Logger::log('Wrong ownership. Not deleting item ' . $item['id']); } } DBA::close($items); } /** * Mark an item for deletion, delete related data and notify others about it - if it was ours * * @param integer $item_id * @param integer $priority Priority for the notification * * @return boolean success * @throws \Friendica\Network\HTTPException\InternalServerErrorException */ public static function markForDeletionById($item_id, $priority = PRIORITY_HIGH) { Logger::info('Mark item for deletion by id', ['id' => $item_id, 'callstack' => System::callstack()]); // locate item to be deleted $fields = ['id', 'uri', 'uri-id', 'uid', 'parent', 'parent-uri-id', 'origin', 'deleted', 'resource-id', 'event-id', 'verb', 'object-type', 'object', 'target', 'contact-id', 'psid', 'gravity']; $item = Post::selectFirst($fields, ['id' => $item_id]); if (!DBA::isResult($item)) { Logger::info('Item not found.', ['id' => $item_id]); return false; } if ($item['deleted']) { Logger::info('Item has already been marked for deletion.', ['id' => $item_id]); return false; } $parent = Post::selectFirst(['origin'], ['id' => $item['parent']]); if (!DBA::isResult($parent)) { $parent = ['origin' => false]; } // clean up categories and tags so they don't end up as orphans Post\Category::deleteByURIId($item['uri-id'], $item['uid']); /* * If item is a link to a photo resource, nuke all the associated photos * (visitors will not have photo resources) * This only applies to photos uploaded from the photos page. Photos inserted into a post do not * generate a resource-id and therefore aren't intimately linked to the item. */ /// @TODO: this should first check if photo is used elsewhere if (strlen($item['resource-id'])) { Photo::delete(['resource-id' => $item['resource-id'], 'uid' => $item['uid']]); } // If item is a link to an event, delete the event. if (intval($item['event-id'])) { Event::delete($item['event-id']); } // If item has attachments, drop them $attachments = Post\Media::getByURIId($item['uri-id'], [Post\Media::DOCUMENT]); foreach($attachments as $attachment) { if (preg_match("|attach/(\d+)|", $attachment['url'], $matches)) { Attach::delete(['id' => $matches[1], 'uid' => $item['uid']]); } } // Set the item to "deleted" $item_fields = ['deleted' => true, 'edited' => DateTimeFormat::utcNow(), 'changed' => DateTimeFormat::utcNow()]; Post::update($item_fields, ['id' => $item['id']]); Post\Category::storeTextByURIId($item['uri-id'], $item['uid'], ''); if (!Post::exists(["`uri-id` = ? AND `uid` != 0 AND NOT `deleted`", $item['uri-id']])) { self::markForDeletion(['uri-id' => $item['uri-id'], 'uid' => 0, 'deleted' => false], $priority); } Post\DeliveryData::delete($item['uri-id']); // If it's the parent of a comment thread, kill all the kids if ($item['gravity'] == GRAVITY_PARENT) { self::markForDeletion(['parent' => $item['parent'], 'deleted' => false], $priority); } // Is it our comment and/or our thread? if (($item['origin'] || $parent['origin']) && ($item['uid'] != 0)) { // When we delete the original post we will delete all existing copies on the server as well self::markForDeletion(['uri-id' => $item['uri-id'], 'deleted' => false], $priority); // send the notification upstream/downstream if ($priority) { Worker::add(['priority' => $priority, 'dont_fork' => true], "Notifier", Delivery::DELETION, (int)$item['uri-id'], (int)$item['uid']); } } elseif ($item['uid'] != 0) { Post\User::update($item['uri-id'], $item['uid'], ['hidden' => true]); Post\ThreadUser::update($item['uri-id'], $item['uid'], ['hidden' => true]); } Logger::info('Item has been marked for deletion.', ['id' => $item_id]); return true; } private static function guid($item, $notify) { if (!empty($item['guid'])) { return Strings::escapeTags(trim($item['guid'])); } if ($notify) { // We have to avoid duplicates. So we create the GUID in form of a hash of the plink or uri. // We add the hash of our own host because our host is the original creator of the post. $prefix_host = DI::baseUrl()->getHostname(); } else { $prefix_host = ''; // We are only storing the post so we create a GUID from the original hostname. if (!empty($item['author-link'])) { $parsed = parse_url($item['author-link']); if (!empty($parsed['host'])) { $prefix_host = $parsed['host']; } } if (empty($prefix_host) && !empty($item['plink'])) { $parsed = parse_url($item['plink']); if (!empty($parsed['host'])) { $prefix_host = $parsed['host']; } } if (empty($prefix_host) && !empty($item['uri'])) { $parsed = parse_url($item['uri']); if (!empty($parsed['host'])) { $prefix_host = $parsed['host']; } } // Is it in the format data@host.tld? - Used for mail contacts if (empty($prefix_host) && !empty($item['author-link']) && strstr($item['author-link'], '@')) { $mailparts = explode('@', $item['author-link']); $prefix_host = array_pop($mailparts); } } if (!empty($item['plink'])) { $guid = self::guidFromUri($item['plink'], $prefix_host); } elseif (!empty($item['uri'])) { $guid = self::guidFromUri($item['uri'], $prefix_host); } else { $guid = System::createUUID(hash('crc32', $prefix_host)); } return $guid; } private static function contactId($item) { if (!empty($item['contact-id']) && DBA::exists('contact', ['self' => true, 'id' => $item['contact-id']])) { return $item['contact-id']; } elseif (($item['gravity'] == GRAVITY_PARENT) && !empty($item['uid']) && !empty($item['contact-id']) && Contact::isSharing($item['contact-id'], $item['uid'])) { return $item['contact-id']; } elseif (!empty($item['uid']) && !Contact::isSharing($item['author-id'], $item['uid'])) { return $item['author-id']; } elseif (!empty($item['contact-id'])) { return $item['contact-id']; } else { $contact_id = Contact::getIdForURL($item['author-link'], $item['uid']); if (!empty($contact_id)) { return $contact_id; } } return $item['author-id']; } /** * Write an item array into a spool file to be inserted later. * This command is called whenever there are issues storing an item. * * @param array $item The item fields that are to be inserted * @throws \Exception */ private static function spool($orig_item) { // Now we store the data in the spool directory // We use "microtime" to keep the arrival order and "mt_rand" to avoid duplicates $file = 'item-' . round(microtime(true) * 10000) . '-' . mt_rand() . '.msg'; $spoolpath = get_spoolpath(); if ($spoolpath != "") { $spool = $spoolpath . '/' . $file; file_put_contents($spool, json_encode($orig_item)); Logger::warning("Item wasn't stored - Item was spooled into file", ['file' => $file]); } } /** * Check if the item array is a duplicate * * @param array $item * @return boolean is it a duplicate? */ private static function isDuplicate(array $item) { // Checking if there is already an item with the same guid $condition = ['guid' => $item['guid'], 'network' => $item['network'], 'uid' => $item['uid']]; if (Post::exists($condition)) { Logger::notice('Found already existing item', [ 'guid' => $item['guid'], 'uid' => $item['uid'], 'network' => $item['network'] ]); return true; } $condition = ['uri-id' => $item['uri-id'], 'uid' => $item['uid'], 'network' => [$item['network'], Protocol::DFRN]]; if (Post::exists($condition)) { Logger::notice('duplicated item with the same uri found.', $item); return true; } // On Friendica and Diaspora the GUID is unique if (in_array($item['network'], [Protocol::DFRN, Protocol::DIASPORA])) { $condition = ['guid' => $item['guid'], 'uid' => $item['uid']]; if (Post::exists($condition)) { Logger::notice('duplicated item with the same guid found.', $item); return true; } } elseif ($item['network'] == Protocol::OSTATUS) { // Check for an existing post with the same content. There seems to be a problem with OStatus. $condition = ["`body` = ? AND `network` = ? AND `created` = ? AND `contact-id` = ? AND `uid` = ?", $item['body'], $item['network'], $item['created'], $item['contact-id'], $item['uid']]; if (Post::exists($condition)) { Logger::notice('duplicated item with the same body found.', $item); return true; } } /* * Check for already added items. * There is a timing issue here that sometimes creates double postings. * An unique index would help - but the limitations of MySQL (maximum size of index values) prevent this. */ if (($item['uid'] == 0) && Post::exists(['uri-id' => $item['uri-id'], 'uid' => 0])) { Logger::notice('Global item already stored.', ['uri-id' => $item['uri-id'], 'network' => $item['network']]); return true; } return false; } /** * Check if the item array is valid * * @param array $item * @return boolean item is valid */ public static function isValid(array $item) { // When there is no content then we don't post it if ($item['body'] . $item['title'] == '') { Logger::notice('No body, no title.'); return false; } if (!empty($item['uid'])) { $owner = User::getOwnerDataById($item['uid'], false); if (!$owner) { Logger::notice('Missing item user owner data', ['uid' => $item['uid']]); return false; } if ($owner['account_expired'] || $owner['account_removed']) { Logger::notice('Item user has been deleted/expired/removed', ['uid' => $item['uid'], 'deleted' => $owner['deleted'], 'account_expired' => $owner['account_expired'], 'account_removed' => $owner['account_removed']]); return false; } } if (!empty($item['author-id']) && Contact::isBlocked($item['author-id'])) { Logger::notice('Author is blocked node-wide', ['author-link' => $item['author-link'], 'item-uri' => $item['uri']]); return false; } if (!empty($item['author-link']) && Network::isUrlBlocked($item['author-link'])) { Logger::notice('Author server is blocked', ['author-link' => $item['author-link'], 'item-uri' => $item['uri']]); return false; } if (!empty($item['owner-id']) && Contact::isBlocked($item['owner-id'])) { Logger::notice('Owner is blocked node-wide', ['owner-link' => $item['owner-link'], 'item-uri' => $item['uri']]); return false; } if (!empty($item['owner-link']) && Network::isUrlBlocked($item['owner-link'])) { Logger::notice('Owner server is blocked', ['owner-link' => $item['owner-link'], 'item-uri' => $item['uri']]); return false; } if (!empty($item['uid']) && !self::isAllowedByUser($item, $item['uid'])) { return false; } if ($item['verb'] == Activity::FOLLOW) { if (!$item['origin'] && ($item['author-id'] == Contact::getPublicIdByUserId($item['uid']))) { // Our own follow request can be relayed to us. We don't store it to avoid notification chaos. Logger::info("Follow: Don't store not origin follow request", ['parent-uri' => $item['parent-uri']]); return false; } $condition = ['verb' => Activity::FOLLOW, 'uid' => $item['uid'], 'parent-uri' => $item['parent-uri'], 'author-id' => $item['author-id']]; if (Post::exists($condition)) { // It happens that we receive multiple follow requests by the same author - we only store one. Logger::info('Follow: Found existing follow request from author', ['author-id' => $item['author-id'], 'parent-uri' => $item['parent-uri']]); return false; } } return true; } /** * Check if the item array is too old * * @param array $item * @return boolean item is too old */ public static function isTooOld(array $item) { // check for create date and expire time $expire_interval = DI::config()->get('system', 'dbclean-expire-days', 0); $user = DBA::selectFirst('user', ['expire'], ['uid' => $item['uid']]); if (DBA::isResult($user) && ($user['expire'] > 0) && (($user['expire'] < $expire_interval) || ($expire_interval == 0))) { $expire_interval = $user['expire']; } if (($expire_interval > 0) && !empty($item['created'])) { $expire_date = time() - ($expire_interval * 86400); $created_date = strtotime($item['created']); if ($created_date < $expire_date) { Logger::notice('Item created before expiration interval.', [ 'created' => date('c', $created_date), 'expired' => date('c', $expire_date), '$item' => $item ]); return true; } } return false; } /** * Return the id of the given item array if it has been stored before * * @param array $item * @return integer item id */ private static function getDuplicateID(array $item) { if (empty($item['network']) || in_array($item['network'], Protocol::FEDERATED)) { $condition = ["`uri-id` = ? AND `uid` = ? AND `network` IN (?, ?, ?, ?)", $item['uri-id'], $item['uid'], Protocol::ACTIVITYPUB, Protocol::DIASPORA, Protocol::DFRN, Protocol::OSTATUS]; $existing = Post::selectFirst(['id', 'network'], $condition); if (DBA::isResult($existing)) { // We only log the entries with a different user id than 0. Otherwise we would have too many false positives if ($item['uid'] != 0) { Logger::notice('Item already existed for user', [ 'uri-id' => $item['uri-id'], 'uid' => $item['uid'], 'network' => $item['network'], 'existing_id' => $existing["id"], 'existing_network' => $existing["network"] ]); } return $existing["id"]; } } return 0; } /** * Fetch top-level parent data for the given item array * * @param array $item * @return array item array with parent data * @throws \Exception */ private static function getTopLevelParent(array $item) { $fields = ['uid', 'uri', 'parent-uri', 'id', 'deleted', 'uri-id', 'parent-uri-id', 'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid', 'wall', 'private', 'forum_mode', 'origin', 'author-id']; $condition = ['uri-id' => $item['thr-parent-id'], 'uid' => $item['uid']]; $params = ['order' => ['id' => false]]; $parent = Post::selectFirst($fields, $condition, $params); if (!DBA::isResult($parent)) { Logger::notice('item parent was not found - ignoring item', ['thr-parent-id' => $item['thr-parent-id'], 'uid' => $item['uid']]); return []; } if ($parent['uri-id'] == $parent['parent-uri-id']) { return $parent; } $condition = ['uri-id' => $parent['parent-uri-id'], 'parent-uri-id' => $parent['parent-uri-id'], 'uid' => $parent['uid']]; $params = ['order' => ['id' => false]]; $toplevel_parent = Post::selectFirst($fields, $condition, $params); if (!DBA::isResult($toplevel_parent)) { Logger::notice('item top level parent was not found - ignoring item', ['parent-uri-id' => $parent['parent-uri-id'], 'uid' => $parent['uid']]); return []; } return $toplevel_parent; } /** * Get the gravity for the given item array * * @param array $item * @return integer gravity */ private static function getGravity(array $item) { $activity = DI::activity(); if (isset($item['gravity'])) { return intval($item['gravity']); } elseif ($item['parent-uri-id'] === $item['uri-id']) { return GRAVITY_PARENT; } elseif ($activity->match($item['verb'], Activity::POST)) { return GRAVITY_COMMENT; } elseif ($activity->match($item['verb'], Activity::FOLLOW)) { return GRAVITY_ACTIVITY; } elseif ($activity->match($item['verb'], Activity::ANNOUNCE)) { return GRAVITY_ACTIVITY; } Logger::info('Unknown gravity for verb', ['verb' => $item['verb']]); return GRAVITY_UNKNOWN; // Should not happen } public static function insert($item, $notify = false, $dontcache = false) { $orig_item = $item; $priority = PRIORITY_HIGH; // If it is a posting where users should get notifications, then define it as wall posting if ($notify) { $item['wall'] = 1; $item['origin'] = 1; $item['network'] = Protocol::DFRN; $item['protocol'] = Conversation::PARCEL_DIRECT; $item['direction'] = Conversation::PUSH; if (in_array($notify, PRIORITIES)) { $priority = $notify; } } else { $item['network'] = trim(($item['network'] ?? '') ?: Protocol::PHANTOM); } $uid = intval($item['uid']); $item['guid'] = self::guid($item, $notify); $item['uri'] = substr(trim($item['uri'] ?? '') ?: self::newURI($item['uid'], $item['guid']), 0, 255); // Store URI data $item['uri-id'] = ItemURI::insert(['uri' => $item['uri'], 'guid' => $item['guid']]); // Backward compatibility: parent-uri used to be the direct parent uri. // If it is provided without a thr-parent, it probably is the old behavior. $item['thr-parent'] = trim($item['thr-parent'] ?? $item['parent-uri'] ?? $item['uri']); $item['parent-uri'] = $item['thr-parent']; $item['thr-parent-id'] = $item['parent-uri-id'] = ItemURI::getIdByURI($item['thr-parent']); // Store conversation data $item = Conversation::insert($item); /* * Do we already have this item? * We have to check several networks since Friendica posts could be repeated * via OStatus (maybe Diasporsa as well) */ $duplicate = self::getDuplicateID($item); if ($duplicate) { return $duplicate; } // Additional duplicate checks /// @todo Check why the first duplication check returns the item number and the second a 0 if (self::isDuplicate($item)) { return 0; } $item['wall'] = intval($item['wall'] ?? 0); $item['extid'] = trim($item['extid'] ?? ''); $item['author-name'] = trim($item['author-name'] ?? ''); $item['author-link'] = trim($item['author-link'] ?? ''); $item['author-avatar'] = trim($item['author-avatar'] ?? ''); $item['owner-name'] = trim($item['owner-name'] ?? ''); $item['owner-link'] = trim($item['owner-link'] ?? ''); $item['owner-avatar'] = trim($item['owner-avatar'] ?? ''); $item['received'] = (isset($item['received']) ? DateTimeFormat::utc($item['received']) : DateTimeFormat::utcNow()); $item['created'] = (isset($item['created']) ? DateTimeFormat::utc($item['created']) : $item['received']); $item['edited'] = (isset($item['edited']) ? DateTimeFormat::utc($item['edited']) : $item['created']); $item['changed'] = (isset($item['changed']) ? DateTimeFormat::utc($item['changed']) : $item['created']); $item['commented'] = (isset($item['commented']) ? DateTimeFormat::utc($item['commented']) : $item['created']); $item['title'] = substr(trim($item['title'] ?? ''), 0, 255); $item['location'] = trim($item['location'] ?? ''); $item['coord'] = trim($item['coord'] ?? ''); $item['visible'] = (isset($item['visible']) ? intval($item['visible']) : 1); $item['deleted'] = 0; $item['post-type'] = ($item['post-type'] ?? '') ?: self::PT_ARTICLE; $item['verb'] = trim($item['verb'] ?? ''); $item['object-type'] = trim($item['object-type'] ?? ''); $item['object'] = trim($item['object'] ?? ''); $item['target-type'] = trim($item['target-type'] ?? ''); $item['target'] = trim($item['target'] ?? ''); $item['plink'] = substr(trim($item['plink'] ?? ''), 0, 255); $item['allow_cid'] = trim($item['allow_cid'] ?? ''); $item['allow_gid'] = trim($item['allow_gid'] ?? ''); $item['deny_cid'] = trim($item['deny_cid'] ?? ''); $item['deny_gid'] = trim($item['deny_gid'] ?? ''); $item['private'] = intval($item['private'] ?? self::PUBLIC); $item['body'] = trim($item['body'] ?? ''); $item['raw-body'] = trim($item['raw-body'] ?? $item['body']); $item['app'] = trim($item['app'] ?? ''); $item['origin'] = intval($item['origin'] ?? 0); $item['postopts'] = trim($item['postopts'] ?? ''); $item['resource-id'] = trim($item['resource-id'] ?? ''); $item['event-id'] = intval($item['event-id'] ?? 0); $item['inform'] = trim($item['inform'] ?? ''); $item['file'] = trim($item['file'] ?? ''); // Items cannot be stored before they happen ... if ($item['created'] > DateTimeFormat::utcNow()) { $item['created'] = DateTimeFormat::utcNow(); } // We haven't invented time travel by now. if ($item['edited'] > DateTimeFormat::utcNow()) { $item['edited'] = DateTimeFormat::utcNow(); } $item['plink'] = ($item['plink'] ?? '') ?: DI::baseUrl() . '/display/' . urlencode($item['guid']); $item['gravity'] = self::getGravity($item); $item['language'] = self::getLanguage($item); $default = ['url' => $item['author-link'], 'name' => $item['author-name'], 'photo' => $item['author-avatar'], 'network' => $item['network']]; $item['author-id'] = ($item['author-id'] ?? 0) ?: Contact::getIdForURL($item['author-link'], 0, null, $default); $default = ['url' => $item['owner-link'], 'name' => $item['owner-name'], 'photo' => $item['owner-avatar'], 'network' => $item['network']]; $item['owner-id'] = ($item['owner-id'] ?? 0) ?: Contact::getIdForURL($item['owner-link'], 0, null, $default); $actor = ($item['gravity'] == GRAVITY_PARENT) ? $item['owner-id'] : $item['author-id']; if (!$item['origin'] && ($item['uid'] != 0) && Contact::isSharing($actor, $item['uid'])) { $item['post-type'] = self::PT_FOLLOWER; } // Ensure that there is an avatar cache Contact::checkAvatarCache($item['author-id']); Contact::checkAvatarCache($item['owner-id']); // The contact-id should be set before "self::insert" was called - but there seems to be issues sometimes $item["contact-id"] = self::contactId($item); if (!empty($item['direction']) && in_array($item['direction'], [Conversation::PUSH, Conversation::RELAY]) && self::isTooOld($item)) { Logger::info('Item is too old', ['item' => $item]); return 0; } if (!self::isValid($item)) { return 0; } if ($item['gravity'] !== GRAVITY_PARENT) { $toplevel_parent = self::getTopLevelParent($item); if (empty($toplevel_parent)) { return 0; } // If the thread originated from this node, we check the permission against the thread starter $condition = ['uri-id' => $toplevel_parent['uri-id'], 'wall' => true]; $localTopLevelParent = Post::selectFirst(['uid'], $condition); if (!empty($localTopLevelParent['uid']) && !self::isAllowedByUser($item, $localTopLevelParent['uid'])) { return 0; } $parent_id = $toplevel_parent['id']; $item['parent-uri'] = $toplevel_parent['uri']; $item['parent-uri-id'] = $toplevel_parent['uri-id']; $item['deleted'] = $toplevel_parent['deleted']; $item['allow_cid'] = $toplevel_parent['allow_cid']; $item['allow_gid'] = $toplevel_parent['allow_gid']; $item['deny_cid'] = $toplevel_parent['deny_cid']; $item['deny_gid'] = $toplevel_parent['deny_gid']; $parent_origin = $toplevel_parent['origin']; // Don't federate received participation messages if ($item['verb'] != Activity::FOLLOW) { $item['wall'] = $toplevel_parent['wall']; } else { $item['wall'] = false; // Participations are technical messages, so they are set to "seen" automatically $item['unseen'] = false; } /* * If the parent is private, force privacy for the entire conversation * This differs from the above settings as it subtly allows comments from * email correspondents to be private even if the overall thread is not. */ if ($toplevel_parent['private']) { $item['private'] = $toplevel_parent['private']; } /* * Edge case. We host a public forum that was originally posted to privately. * The original author commented, but as this is a comment, the permissions * weren't fixed up so it will still show the comment as private unless we fix it here. */ if ((intval($toplevel_parent['forum_mode']) == 1) && ($toplevel_parent['private'] != self::PUBLIC)) { $item['private'] = self::PUBLIC; } // If its a post that originated here then tag the thread as "mention" if ($item['origin'] && $item['uid']) { DBA::update('post-thread-user', ['mention' => true], ['uri-id' => $item['parent-uri-id'], 'uid' => $item['uid']]); Logger::info('tagged thread as mention', ['parent' => $parent_id, 'parent-uri-id' => $item['parent-uri-id'], 'uid' => $item['uid']]); } // Update the contact relations Contact\Relation::store($toplevel_parent['author-id'], $item['author-id'], $item['created']); } else { $parent_id = 0; $parent_origin = $item['origin']; } $item['parent-uri-id'] = ItemURI::getIdByURI($item['parent-uri']); $item['thr-parent-id'] = ItemURI::getIdByURI($item['thr-parent']); // Is this item available in the global items (with uid=0)? if ($item["uid"] == 0) { $item["global"] = true; // Set the global flag on all items if this was a global item entry Post::update(['global' => true], ['uri-id' => $item['uri-id']]); } else { $item['global'] = Post::exists(['uid' => 0, 'uri-id' => $item['uri-id']]); } // ACL settings if (!empty($item["allow_cid"] . $item["allow_gid"] . $item["deny_cid"] . $item["deny_gid"])) { $item["private"] = self::PRIVATE; } if ($notify) { $item['edit'] = false; $item['parent'] = $parent_id; Hook::callAll('post_local', $item); } else { Hook::callAll('post_remote', $item); } if (!empty($item['cancel'])) { Logger::log('post cancelled by addon.'); return 0; } if (empty($item['vid']) && !empty($item['verb'])) { $item['vid'] = Verb::getID($item['verb']); } // Creates or assigns the permission set $item['psid'] = PermissionSet::getIdFromACL( $item['uid'], $item['allow_cid'], $item['allow_gid'], $item['deny_cid'], $item['deny_gid'] ); if (!empty($item['extid'])) { $item['external-id'] = ItemURI::getIdByURI($item['extid']); } if ($item['verb'] == Activity::ANNOUNCE) { self::setOwnerforResharedItem($item); } // Remove all media attachments from the body and store them in the post-media table $item['raw-body'] = Post\Media::insertFromBody($item['uri-id'], $item['raw-body']); $item['raw-body'] = self::setHashtags($item['raw-body']); // Check for hashtags in the body and repair or add hashtag links $item['body'] = self::setHashtags($item['body']); // Fill the cache field self::putInCache($item); if (stristr($item['verb'], Activity::POKE)) { $notify_type = Delivery::POKE; } else { $notify_type = Delivery::POST; } // Filling item related side tables if (!empty($item['attach'])) { Post\Media::insertFromAttachment($item['uri-id'], $item['attach']); } if (empty($item['event-id'])) { unset($item['event-id']); } if (empty($item['causer-id'])) { unset($item['causer-id']); } Post::insert($item['uri-id'], $item); if ($item['gravity'] == GRAVITY_PARENT) { Post\Thread::insert($item['uri-id'], $item); } if (!in_array($item['verb'], self::ACTIVITIES)) { Post\Content::insert($item['uri-id'], $item); } // Diaspora signature if (!empty($item['diaspora_signed_text'])) { DBA::replace('diaspora-interaction', ['uri-id' => $item['uri-id'], 'interaction' => $item['diaspora_signed_text']]); } // Attached file links if (!empty($item['file'])) { Post\Category::storeTextByURIId($item['uri-id'], $item['uid'], $item['file']); } // Delivery relevant data $delivery_data = Post\DeliveryData::extractFields($item); if (!empty($item['origin']) || !empty($item['wall']) || !empty($delivery_data['postopts']) || !empty($delivery_data['inform'])) { Post\DeliveryData::insert($item['uri-id'], $delivery_data); } // Store tags from the body if this hadn't been handled previously in the protocol classes if (!Tag::existsForPost($item['uri-id'])) { Tag::storeFromBody($item['uri-id'], $item['body']); } $condition = ['uri-id' => $item['uri-id'], 'uid' => $item['uid']]; if (Post::exists($condition)) { Logger::notice('Item is already inserted - aborting', $condition); return 0; } $post_user_id = Post\User::insert($item['uri-id'], $item['uid'], $item); if (!$post_user_id) { Logger::notice('Post-User is already inserted - aborting', ['uid' => $item['uid'], 'uri-id' => $item['uri-id']]); return 0; } if ($item['gravity'] == GRAVITY_PARENT) { $item['post-user-id'] = $post_user_id; Post\ThreadUser::insert($item['uri-id'], $item['uid'], $item); } Logger::notice('created item', ['post-id' => $post_user_id, 'uid' => $item['uid'], 'network' => $item['network'], 'uri-id' => $item['uri-id'], 'guid' => $item['guid']]); $posted_item = Post::selectFirst(self::ITEM_FIELDLIST, ['post-user-id' => $post_user_id]); if (!DBA::isResult($posted_item)) { // On failure store the data into a spool file so that the "SpoolPost" worker can try again later. Logger::warning('Could not store item. it will be spooled', ['id' => $post_user_id]); self::spool($orig_item); return 0; } // update the commented timestamp on the parent if (DI::config()->get('system', 'like_no_comment')) { // Update when it is a comment $update_commented = in_array($posted_item['gravity'], [GRAVITY_PARENT, GRAVITY_COMMENT]); } else { // Update when it isn't a follow or tag verb $update_commented = !in_array($posted_item['verb'], [Activity::FOLLOW, Activity::TAG]); } if ($update_commented) { $fields = ['commented' => DateTimeFormat::utcNow(), 'changed' => DateTimeFormat::utcNow()]; } else { $fields = ['changed' => DateTimeFormat::utcNow()]; } Post::update($fields, ['uri-id' => $posted_item['parent-uri-id'], 'uid' => $posted_item['uid']]); // In that function we check if this is a forum post. Additionally we delete the item under certain circumstances if (self::tagDeliver($posted_item['uid'], $post_user_id)) { // Get the user information for the logging $user = User::getById($uid); Logger::notice('Item had been deleted', ['id' => $post_user_id, 'user' => $uid, 'account-type' => $user['account-type']]); return 0; } if (!$dontcache) { if ($notify) { Hook::callAll('post_local_end', $posted_item); } else { Hook::callAll('post_remote_end', $posted_item); } } if ($posted_item['gravity'] === GRAVITY_PARENT) { self::addShadow($post_user_id); } else { self::addShadowPost($post_user_id); } self::updateContact($posted_item); Post\UserNotification::setNotification($posted_item['uri-id'], $posted_item['uid']); check_user_notification($posted_item['uri-id'], $posted_item['uid']); // Distribute items to users who subscribed to their tags self::distributeByTags($posted_item); // Automatically reshare the item if the "remote_self" option is selected self::autoReshare($posted_item); $transmit = $notify || ($posted_item['visible'] && ($parent_origin || $posted_item['origin'])); if ($transmit) { // Don't relay participation messages if (($posted_item['verb'] == Activity::FOLLOW) && (!$posted_item['origin'] || ($posted_item['author-id'] != Contact::getPublicIdByUserId($uid)))) { Logger::info('Participation messages will not be relayed', ['item' => $posted_item['id'], 'uri' => $posted_item['uri'], 'verb' => $posted_item['verb']]); $transmit = false; } } if ($transmit) { Worker::add(['priority' => $priority, 'dont_fork' => true], 'Notifier', $notify_type, (int)$posted_item['uri-id'], (int)$posted_item['uid']); } return $post_user_id; } /** * Change the owner of a parent item if it had been shared by a forum * * (public) forum posts in the new format consist of the regular post by the author * followed by an announce message sent from the forum account. * Changing the owner helps in grouping forum posts. * * @param array $item * @return void */ private static function setOwnerforResharedItem(array $item) { $parent = Post::selectFirst(['id', 'causer-id', 'owner-id', 'author-id', 'author-link', 'origin', 'post-type'], ['uri-id' => $item['thr-parent-id'], 'uid' => $item['uid']]); if (!DBA::isResult($parent)) { Logger::error('Parent not found', ['uri-id' => $item['thr-parent-id'], 'uid' => $item['uid']]); return; } $author = Contact::selectFirst(['url', 'contact-type', 'network'], ['id' => $item['author-id']]); if (!DBA::isResult($author)) { Logger::error('Author not found', ['id' => $item['author-id']]); return; } $cid = Contact::getIdForURL($author['url'], $item['uid']); if (empty($cid) || !Contact::isSharing($cid, $item['uid'])) { Logger::info('The resharer is not a following contact: quit', ['resharer' => $author['url'], 'uid' => $item['uid'], 'cid' => $cid]); return; } if ($author['contact-type'] != Contact::TYPE_COMMUNITY) { if ($parent['post-type'] == self::PT_ANNOUNCEMENT) { Logger::info('The parent is already marked as announced: quit', ['causer' => $parent['causer-id'], 'owner' => $parent['owner-id'], 'author' => $parent['author-id'], 'uid' => $item['uid']]); return; } if (Contact::isSharing($parent['owner-id'], $item['uid'])) { Logger::info('The resharer is no forum: quit', ['resharer' => $item['author-id'], 'owner' => $parent['owner-id'], 'author' => $parent['author-id'], 'uid' => $item['uid']]); return; } self::update(['post-type' => self::PT_ANNOUNCEMENT, 'causer-id' => $item['author-id']], ['id' => $parent['id']]); Logger::info('Set announcement post-type', ['uri-id' => $item['uri-id'], 'thr-parent-id' => $item['thr-parent-id'], 'uid' => $item['uid']]); return; } self::update(['owner-id' => $item['author-id'], 'contact-id' => $cid], ['id' => $parent['id']]); Logger::info('Change owner of the parent', ['uri-id' => $item['uri-id'], 'thr-parent-id' => $item['thr-parent-id'], 'uid' => $item['uid'], 'owner-id' => $item['author-id'], 'contact-id' => $cid]); } /** * Distribute the given item to users who subscribed to their tags * * @param array $item Processed item */ private static function distributeByTags(array $item) { if (($item['uid'] != 0) || ($item['gravity'] != GRAVITY_PARENT) || !in_array($item['network'], Protocol::FEDERATED)) { return; } $uids = Tag::getUIDListByURIId($item['uri-id']); foreach ($uids as $uid) { if (Contact::isSharing($item['author-id'], $uid)) { $fields = []; } else { $fields = ['post-type' => self::PT_TAG]; } $stored = self::storeForUserByUriId($item['uri-id'], $uid, $fields); Logger::info('Stored item for users', ['uri-id' => $item['uri-id'], 'uid' => $uid, 'fields' => $fields, 'stored' => $stored]); } } /** * Distributes public items to the receivers * * @param integer $itemid Item ID that should be added * @param string $signed_text Original text (for Diaspora signatures), JSON encoded. * @throws \Exception */ public static function distribute($itemid, $signed_text = '') { $condition = ["`id` IN (SELECT `parent` FROM `post-user-view` WHERE `id` = ?)", $itemid]; $parent = Post::selectFirst(['owner-id'], $condition); if (!DBA::isResult($parent)) { Logger::warning('Item not found', ['condition' => $condition]); return; } // Only distribute public items from native networks $condition = ['id' => $itemid, 'uid' => 0, 'network' => array_merge(Protocol::FEDERATED ,['']), 'visible' => true, 'deleted' => false, 'private' => [self::PUBLIC, self::UNLISTED]]; $item = Post::selectFirst(self::ITEM_FIELDLIST, $condition); if (!DBA::isResult($item)) { Logger::warning('Item not found', ['condition' => $condition]); return; } $origin = $item['origin']; $users = []; /// @todo add a field "pcid" in the contact table that referrs to the public contact id. $owner = DBA::selectFirst('contact', ['url', 'nurl', 'alias'], ['id' => $parent['owner-id']]); if (!DBA::isResult($owner)) { return; } $condition = ['nurl' => $owner['nurl'], 'rel' => [Contact::SHARING, Contact::FRIEND]]; $contacts = DBA::select('contact', ['uid'], $condition); while ($contact = DBA::fetch($contacts)) { if ($contact['uid'] == 0) { continue; } $users[$contact['uid']] = $contact['uid']; } DBA::close($contacts); $condition = ['alias' => $owner['url'], 'rel' => [Contact::SHARING, Contact::FRIEND]]; $contacts = DBA::select('contact', ['uid'], $condition); while ($contact = DBA::fetch($contacts)) { if ($contact['uid'] == 0) { continue; } $users[$contact['uid']] = $contact['uid']; } DBA::close($contacts); if (!empty($owner['alias'])) { $condition = ['nurl' => Strings::normaliseLink($owner['alias']), 'rel' => [Contact::SHARING, Contact::FRIEND]]; $contacts = DBA::select('contact', ['uid'], $condition); while ($contact = DBA::fetch($contacts)) { if ($contact['uid'] == 0) { continue; } $users[$contact['uid']] = $contact['uid']; } DBA::close($contacts); } $origin_uid = 0; if ($item['uri-id'] != $item['parent-uri-id']) { $parents = Post::select(['uid', 'origin'], ["`uri-id` = ? AND `uid` != 0", $item['parent-uri-id']]); while ($parent = Post::fetch($parents)) { $users[$parent['uid']] = $parent['uid']; if ($parent['origin'] && !$origin) { $origin_uid = $parent['uid']; } } DBA::close($parents); } foreach ($users as $uid) { if ($origin_uid == $uid) { $item['diaspora_signed_text'] = $signed_text; } self::storeForUser($item, $uid); } } /** * Store a public item defined by their URI-ID for the given users * * @param integer $uri_id URI-ID of the given item * @param integer $uid The user that will receive the item entry * @param array $fields Additional fields to be stored * @return integer stored item id */ public static function storeForUserByUriId(int $uri_id, int $uid, array $fields = []) { $item = Post::selectFirst(self::ITEM_FIELDLIST, ['uri-id' => $uri_id, 'uid' => 0]); if (!DBA::isResult($item)) { return 0; } if (($item['private'] == self::PRIVATE) || !in_array($item['network'], Protocol::FEDERATED)) { Logger::notice('Item is private or not from a federated network. It will not be stored for the user.', ['uri-id' => $uri_id, 'uid' => $uid, 'private' => $item['private'], 'network' => $item['network']]); return 0; } $item['post-type'] = self::PT_STORED; $item = array_merge($item, $fields); $stored = self::storeForUser($item, $uid); Logger::info('Public item stored for user', ['uri-id' => $item['uri-id'], 'uid' => $uid, 'stored' => $stored]); return $stored; } /** * Store a public item array for the given users * * @param array $item The item entry that will be stored * @param integer $uid The user that will receive the item entry * @return integer stored item id * @throws \Exception */ private static function storeForUser(array $item, int $uid) { if (Post::exists(['uri-id' => $item['uri-id'], 'uid' => $uid])) { Logger::info('Item already exists', ['uri-id' => $item['uri-id'], 'uid' => $uid]); return 0; } unset($item['id']); unset($item['parent']); unset($item['mention']); unset($item['starred']); unset($item['unseen']); unset($item['psid']); $item['uid'] = $uid; $item['origin'] = 0; $item['wall'] = 0; if ($item['gravity'] == GRAVITY_PARENT) { $contact = Contact::getByURLForUser($item['owner-link'], $uid, false, ['id']); } else { $contact = Contact::getByURLForUser($item['author-link'], $uid, false, ['id']); } if (!empty($contact['id'])) { $item['contact-id'] = $contact['id']; } else { // Shouldn't happen at all Logger::warning('contact-id could not be fetched', ['uid' => $uid, 'item' => $item]); $self = DBA::selectFirst('contact', ['id'], ['self' => true, 'uid' => $uid]); if (!DBA::isResult($self)) { // Shouldn't happen even less Logger::warning('self contact could not be fetched', ['uid' => $uid, 'item' => $item]); return 0; } $item['contact-id'] = $self['id']; } /// @todo Handling of "event-id" $notify = false; if ($item['gravity'] == GRAVITY_PARENT) { $contact = DBA::selectFirst('contact', [], ['id' => $item['contact-id'], 'self' => false]); if (DBA::isResult($contact)) { $notify = self::isRemoteSelf($contact, $item); } } $distributed = self::insert($item, $notify, true); if (!$distributed) { Logger::info("Distributed public item wasn't stored", ['uri-id' => $item['uri-id'], 'user' => $uid]); } else { Logger::info('Distributed public item was stored', ['uri-id' => $item['uri-id'], 'user' => $uid, 'stored' => $distributed]); } return $distributed; } /** * Add a shadow entry for a given item id that is a thread starter * * We store every public item entry additionally with the user id "0". * This is used for the community page and for the search. * It is planned that in the future we will store public item entries only once. * * @param integer $itemid Item ID that should be added * @throws \Exception */ private static function addShadow($itemid) { $fields = ['uid', 'private', 'visible', 'deleted', 'network', 'uri-id']; $condition = ['id' => $itemid, 'gravity' => GRAVITY_PARENT]; $item = Post::selectFirst($fields, $condition); if (!DBA::isResult($item)) { return; } // is it already a copy? if (($itemid == 0) || ($item['uid'] == 0)) { return; } // Is it a visible public post? if (!$item["visible"] || $item["deleted"] || ($item["private"] == self::PRIVATE)) { return; } // is it an entry from a connector? Only add an entry for natively connected networks if (!in_array($item["network"], array_merge(Protocol::FEDERATED ,['']))) { return; } if (Post::exists(['uri-id' => $item['uri-id'], 'uid' => 0])) { return; } $item = Post::selectFirst(self::ITEM_FIELDLIST, ['id' => $itemid]); if (DBA::isResult($item)) { // Preparing public shadow (removing user specific data) $item['uid'] = 0; unset($item['id']); unset($item['parent']); unset($item['wall']); unset($item['mention']); unset($item['origin']); unset($item['starred']); unset($item['postopts']); unset($item['inform']); unset($item['post-type']); if ($item['uri-id'] == $item['parent-uri-id']) { $item['contact-id'] = $item['owner-id']; } else { $item['contact-id'] = $item['author-id']; } $public_shadow = self::insert($item, false, true); Logger::info('Stored public shadow', ['thread' => $itemid, 'id' => $public_shadow]); } } /** * Add a shadow entry for a given item id that is a comment * * This function does the same like the function above - but for comments * * @param integer $itemid Item ID that should be added * @throws \Exception */ private static function addShadowPost($itemid) { $item = Post::selectFirst(self::ITEM_FIELDLIST, ['id' => $itemid]); if (!DBA::isResult($item)) { return; } // Is it a toplevel post? if ($item['gravity'] == GRAVITY_PARENT) { self::addShadow($itemid); return; } // Is this a shadow entry? if ($item['uid'] == 0) { return; } // Is there a shadow parent? if (!Post::exists(['uri-id' => $item['parent-uri-id'], 'uid' => 0])) { return; } // Is there already a shadow entry? if (Post::exists(['uri-id' => $item['uri-id'], 'uid' => 0])) { return; } // Save "origin" and "parent" state $origin = $item['origin']; $parent = $item['parent']; // Preparing public shadow (removing user specific data) $item['uid'] = 0; unset($item['id']); unset($item['parent']); unset($item['wall']); unset($item['mention']); unset($item['origin']); unset($item['starred']); unset($item['postopts']); unset($item['inform']); unset($item['post-type']); $item['contact-id'] = Contact::getIdForURL($item['author-link']); $public_shadow = self::insert($item, false, true); Logger::info('Stored public shadow', ['uri-id' => $item['uri-id'], 'id' => $public_shadow]); // If this was a comment to a Diaspora post we don't get our comment back. // This means that we have to distribute the comment by ourselves. if ($origin && Post::exists(['id' => $parent, 'network' => Protocol::DIASPORA])) { self::distribute($public_shadow); } } /** * Adds a language specification in a "language" element of given $arr. * Expects "body" element to exist in $arr. * * @param array $item * @return string detected language * @throws \Text_LanguageDetect_Exception */ private static function getLanguage(array $item) { if (!empty($item['language'])) { return $item['language']; } if (!in_array($item['gravity'], [GRAVITY_PARENT, GRAVITY_COMMENT]) || empty($item['body'])) { return ''; } // Convert attachments to links $naked_body = BBCode::removeAttachment($item['body']); if (empty($naked_body)) { return ''; } // Remove links and pictures $naked_body = BBCode::removeLinks($naked_body); // Convert the title and the body to plain text $naked_body = trim($item['title'] . "\n" . BBCode::toPlaintext($naked_body)); // Remove possibly remaining links $naked_body = preg_replace(Strings::autoLinkRegEx(), '', $naked_body); if (empty($naked_body)) { return ''; } $ld = new Language(DI::l10n()->getAvailableLanguages()); $languages = $ld->detect($naked_body)->limit(0, 3)->close(); if (is_array($languages)) { return json_encode($languages); } return ''; } public static function getLanguageMessage(array $item) { $iso639 = new \Matriphe\ISO639\ISO639; $used_languages = ''; foreach (json_decode($item['language'], true) as $language => $reliability) { $used_languages .= $iso639->languageByCode1($language) . ' (' . $language . "): " . number_format($reliability, 5) . '\n'; } $used_languages = DI::l10n()->t('Detected languages in this post:\n%s', $used_languages); return $used_languages; } /** * Creates an unique guid out of a given uri * * @param string $uri uri of an item entry * @param string $host hostname for the GUID prefix * @return string unique guid */ public static function guidFromUri($uri, $host) { // Our regular guid routine is using this kind of prefix as well // We have to avoid that different routines could accidentally create the same value $parsed = parse_url($uri); // We use a hash of the hostname as prefix for the guid $guid_prefix = hash("crc32", $host); // Remove the scheme to make sure that "https" and "http" doesn't make a difference unset($parsed["scheme"]); // Glue it together to be able to make a hash from it $host_id = implode("/", $parsed); // We could use any hash algorithm since it isn't a security issue $host_hash = hash("ripemd128", $host_id); return $guid_prefix.$host_hash; } /** * generate an unique URI * * @param integer $uid User id * @param string $guid An existing GUID (Otherwise it will be generated) * * @return string * @throws \Friendica\Network\HTTPException\InternalServerErrorException */ public static function newURI($uid, $guid = "") { if ($guid == "") { $guid = System::createUUID(); } return DI::baseUrl()->get() . '/objects/' . $guid; } /** * Set "success_update" and "last-item" to the date of the last time we heard from this contact * * This can be used to filter for inactive contacts. * Only do this for public postings to avoid privacy problems, since poco data is public. * Don't set this value if it isn't from the owner (could be an author that we don't know) * * @param array $arr Contains the just posted item record * @throws \Exception */ private static function updateContact($arr) { // Unarchive the author $contact = DBA::selectFirst('contact', [], ['id' => $arr["author-id"]]); if (DBA::isResult($contact)) { Contact::unmarkForArchival($contact); } // Unarchive the contact if it's not our own contact $contact = DBA::selectFirst('contact', [], ['id' => $arr["contact-id"], 'self' => false]); if (DBA::isResult($contact)) { Contact::unmarkForArchival($contact); } /// @todo On private posts we could obfuscate the date $update = ($arr['private'] != self::PRIVATE) || in_array($arr['network'], Protocol::FEDERATED); // Is it a forum? Then we don't care about the rules from above if (!$update && in_array($arr["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN]) && ($arr["parent-uri-id"] === $arr["uri-id"])) { if (DBA::exists('contact', ['id' => $arr['contact-id'], 'forum' => true])) { $update = true; } } if ($update) { // The "self" contact id is used (for example in the connectors) when the contact is unknown // So we have to ensure to only update the last item when it had been our own post, // or it had been done by a "regular" contact. if (!empty($arr['wall'])) { $condition = ['id' => $arr['contact-id']]; } else { $condition = ['id' => $arr['contact-id'], 'self' => false]; } DBA::update('contact', ['failed' => false, 'success_update' => $arr['received'], 'last-item' => $arr['received']], $condition); } // Now do the same for the system wide contacts with uid=0 if ($arr['private'] != self::PRIVATE) { DBA::update('contact', ['failed' => false, 'success_update' => $arr['received'], 'last-item' => $arr['received']], ['id' => $arr['owner-id']]); if ($arr['owner-id'] != $arr['author-id']) { DBA::update('contact', ['failed' => false, 'success_update' => $arr['received'], 'last-item' => $arr['received']], ['id' => $arr['author-id']]); } } } public static function setHashtags($body) { $body = BBCode::performWithEscapedTags($body, ['noparse', 'pre', 'code', 'img'], function ($body) { $tags = BBCode::getTags($body); // No hashtags? if (!count($tags)) { return $body; } // This sorting is important when there are hashtags that are part of other hashtags // Otherwise there could be problems with hashtags like #test and #test2 // Because of this we are sorting from the longest to the shortest tag. usort($tags, function ($a, $b) { return strlen($b) <=> strlen($a); }); $URLSearchString = "^\[\]"; // All hashtags should point to the home server if "local_tags" is activated if (DI::config()->get('system', 'local_tags')) { $body = preg_replace("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", "#[url=" . DI::baseUrl() . "/search?tag=$2]$2[/url]", $body); } // mask hashtags inside of url, bookmarks and attachments to avoid urls in urls $body = preg_replace_callback("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", function ($match) { return ("[url=" . str_replace("#", "#", $match[1]) . "]" . str_replace("#", "#", $match[2]) . "[/url]"); }, $body); $body = preg_replace_callback("/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism", function ($match) { return ("[bookmark=" . str_replace("#", "#", $match[1]) . "]" . str_replace("#", "#", $match[2]) . "[/bookmark]"); }, $body); $body = preg_replace_callback("/\[attachment (.*)\](.*?)\[\/attachment\]/ism", function ($match) { return ("[attachment " . str_replace("#", "#", $match[1]) . "]" . $match[2] . "[/attachment]"); }, $body); // Repair recursive urls $body = preg_replace("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", "#$2", $body); foreach ($tags as $tag) { if ((strpos($tag, '#') !== 0) || strpos($tag, '[url=') || strlen($tag) < 2 || $tag[1] == '#') { continue; } $basetag = str_replace('_', ' ', substr($tag, 1)); $newtag = '#[url=' . DI::baseUrl() . '/search?tag=' . $basetag . ']' . $basetag . '[/url]'; $body = str_replace($tag, $newtag, $body); } // Convert back the masked hashtags $body = str_replace("#", "#", $body); return $body; }); return $body; } /** * look for mention tags and setup a second delivery chain for forum/community posts if appropriate * * @param int $uid * @param int $item_id * @return boolean true if item was deleted, else false * @throws \Friendica\Network\HTTPException\InternalServerErrorException * @throws \ImagickException */ private static function tagDeliver($uid, $item_id) { $mention = false; $user = DBA::selectFirst('user', [], ['uid' => $uid]); if (!DBA::isResult($user)) { return false; } $community_page = (($user['page-flags'] == User::PAGE_FLAGS_COMMUNITY) ? true : false); $prvgroup = (($user['page-flags'] == User::PAGE_FLAGS_PRVGROUP) ? true : false); $item = Post::selectFirst(self::ITEM_FIELDLIST, ['id' => $item_id]); if (!DBA::isResult($item)) { return false; } $link = Strings::normaliseLink(DI::baseUrl() . '/profile/' . $user['nickname']); /* * Diaspora uses their own hardwired link URL in @-tags * instead of the one we supply with webfinger */ $dlink = Strings::normaliseLink(DI::baseUrl() . '/u/' . $user['nickname']); $cnt = preg_match_all('/[\@\!]\[url\=(.*?)\](.*?)\[\/url\]/ism', $item['body'], $matches, PREG_SET_ORDER); if ($cnt) { foreach ($matches as $mtch) { if (Strings::compareLink($link, $mtch[1]) || Strings::compareLink($dlink, $mtch[1])) { $mention = true; Logger::log('mention found: ' . $mtch[2]); } } } if (!$mention) { $tags = Tag::getByURIId($item['uri-id'], [Tag::MENTION, Tag::EXCLUSIVE_MENTION]); foreach ($tags as $tag) { if (Strings::compareLink($link, $tag['url']) || Strings::compareLink($dlink, $tag['url'])) { $mention = true; DI::logger()->info('mention found in tag.', ['url' => $tag['url']]); } } } if (!$mention) { if (($community_page || $prvgroup) && !$item['wall'] && !$item['origin'] && ($item['gravity'] == GRAVITY_PARENT)) { Logger::info('Delete private group/communiy top-level item without mention', ['id' => $item['id'], 'guid'=> $item['guid']]); Post\User::delete(['uri-id' => $item['uri-id'], 'uid' => $item['uid']]); return true; } return false; } $arr = ['item' => $item, 'user' => $user]; Hook::callAll('tagged', $arr); if (!$community_page && !$prvgroup) { return false; } /* * tgroup delivery - setup a second delivery chain * prevent delivery looping - only proceed * if the message originated elsewhere and is a top-level post */ if ($item['wall'] || $item['origin'] || ($item['id'] != $item['parent'])) { return false; } // now change this copy of the post to a forum head message and deliver to all the tgroup members $self = DBA::selectFirst('contact', ['id', 'name', 'url', 'thumb'], ['uid' => $uid, 'self' => true]); if (!DBA::isResult($self)) { return false; } $owner_id = Contact::getIdForURL($self['url']); // also reset all the privacy bits to the forum default permissions $private = ($user['allow_cid'] || $user['allow_gid'] || $user['deny_cid'] || $user['deny_gid']) ? self::PRIVATE : self::PUBLIC; $psid = PermissionSet::getIdFromACL( $user['uid'], $user['allow_cid'], $user['allow_gid'], $user['deny_cid'], $user['deny_gid'] ); $forum_mode = ($prvgroup ? 2 : 1); $fields = ['wall' => true, 'origin' => true, 'forum_mode' => $forum_mode, 'contact-id' => $self['id'], 'owner-id' => $owner_id, 'private' => $private, 'psid' => $psid]; self::update($fields, ['id' => $item['id']]); Worker::add(['priority' => PRIORITY_HIGH, 'dont_fork' => true], 'Notifier', Delivery::POST, (int)$item['uri-id'], (int)$item['uid']); self::performActivity($item['id'], 'announce', $uid); return false; } /** * Automatically reshare the item if the "remote_self" option is selected * * @param array $item * @return void */ private static function autoReshare(array $item) { if ($item['gravity'] != GRAVITY_PARENT) { return; } if (!DBA::exists('contact', ['id' => $item['contact-id'], 'remote_self' => Contact::MIRROR_NATIVE_RESHARE])) { return; } if (!in_array($item['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN])) { return; } Logger::info('Automatically reshare item', ['uid' => $item['uid'], 'id' => $item['id'], 'guid' => $item['guid'], 'uri-id' => $item['uri-id']]); self::performActivity($item['id'], 'announce', $item['uid']); } public static function isRemoteSelf($contact, &$datarray) { if (!$contact['remote_self']) { return false; } // Prevent the forwarding of posts that are forwarded if (!empty($datarray["extid"]) && ($datarray["extid"] == Protocol::DFRN)) { Logger::info('Already forwarded'); return false; } // Prevent to forward already forwarded posts if ($datarray["app"] == DI::baseUrl()->getHostname()) { Logger::info('Already forwarded (second test)'); return false; } // Only forward posts if ($datarray["verb"] != Activity::POST) { Logger::info('No post'); return false; } if (($contact['network'] != Protocol::FEED) && ($datarray['private'] == self::PRIVATE)) { Logger::info('Not public'); return false; } $datarray2 = $datarray; Logger::info('remote-self start', ['contact' => $contact['url'], 'remote_self'=> $contact['remote_self'], 'item' => $datarray]); if ($contact['remote_self'] == Contact::MIRROR_OWN_POST) { $self = DBA::selectFirst('contact', ['id', 'name', 'url', 'thumb'], ['uid' => $contact['uid'], 'self' => true]); if (DBA::isResult($self)) { $datarray['contact-id'] = $self["id"]; $datarray['owner-name'] = $self["name"]; $datarray['owner-link'] = $self["url"]; $datarray['owner-avatar'] = $self["thumb"]; $datarray['author-name'] = $datarray['owner-name']; $datarray['author-link'] = $datarray['owner-link']; $datarray['author-avatar'] = $datarray['owner-avatar']; unset($datarray['edited']); unset($datarray['network']); unset($datarray['owner-id']); unset($datarray['author-id']); } if ($contact['network'] != Protocol::FEED) { $old_uri_id = $datarray["uri-id"] ?? 0; $datarray["guid"] = System::createUUID(); unset($datarray["plink"]); $datarray["uri"] = self::newURI($contact['uid'], $datarray["guid"]); $datarray["uri-id"] = ItemURI::getIdByURI($datarray["uri"]); $datarray["extid"] = Protocol::DFRN; $urlpart = parse_url($datarray2['author-link']); $datarray["app"] = $urlpart["host"]; if (!empty($old_uri_id)) { Post\Media::copy($old_uri_id, $datarray["uri-id"]); } unset($datarray["parent-uri"]); unset($datarray["thr-parent"]); } else { $datarray['private'] = self::PUBLIC; } } if ($contact['network'] != Protocol::FEED) { // Store the original post $result = self::insert($datarray2); Logger::info('remote-self post original item', ['contact' => $contact['url'], 'result'=> $result, 'item' => $datarray2]); } else { $datarray["app"] = "Feed"; $result = true; } // Trigger automatic reactions for addons $datarray['api_source'] = true; // We have to tell the hooks who we are - this really should be improved $_SESSION['authenticated'] = true; $_SESSION['uid'] = $contact['uid']; return (bool)$result; } /** * * @param string $s * @param int $uid * @param array $item * @param int $cid * @return string * @throws \Friendica\Network\HTTPException\InternalServerErrorException * @throws \ImagickException */ public static function fixPrivatePhotos($s, $uid, $item = null, $cid = 0) { if (DI::config()->get('system', 'disable_embedded')) { return $s; } Logger::info('check for photos'); $site = substr(DI::baseUrl(), strpos(DI::baseUrl(), '://')); $orig_body = $s; $new_body = ''; $img_start = strpos($orig_body, '[img'); $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false); $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false); while (($img_st_close !== false) && ($img_len !== false)) { $img_st_close++; // make it point to AFTER the closing bracket $image = substr($orig_body, $img_start + $img_st_close, $img_len); Logger::info('found photo', ['image' => $image]); if (stristr($image, $site . '/photo/')) { // Only embed locally hosted photos $replace = false; $i = basename($image); $i = str_replace(['.jpg', '.png', '.gif'], ['', '', ''], $i); $x = strpos($i, '-'); if ($x) { $res = substr($i, $x + 1); $i = substr($i, 0, $x); $photo = Photo::getPhotoForUser($uid, $i, $res); if (DBA::isResult($photo)) { /* * Check to see if we should replace this photo link with an embedded image * 1. No need to do so if the photo is public * 2. If there's a contact-id provided, see if they're in the access list * for the photo. If so, embed it. * 3. Otherwise, if we have an item, see if the item permissions match the photo * permissions, regardless of order but first check to see if they're an exact * match to save some processing overhead. */ if (self::hasPermissions($photo)) { if ($cid) { $recips = self::enumeratePermissions($photo); if (in_array($cid, $recips)) { $replace = true; } } elseif ($item) { if (self::samePermissions($uid, $item, $photo)) { $replace = true; } } } if ($replace) { $photo_img = Photo::getImageForPhoto($photo); // If a custom width and height were specified, apply before embedding if (preg_match("/\[img\=([0-9]*)x([0-9]*)\]/is", substr($orig_body, $img_start, $img_st_close), $match)) { Logger::info('scaling photo'); $width = intval($match[1]); $height = intval($match[2]); $photo_img->scaleDown(max($width, $height)); } $data = $photo_img->asString(); $type = $photo_img->getType(); Logger::info('replacing photo'); $image = 'data:' . $type . ';base64,' . base64_encode($data); Logger::debug('replaced', ['image' => $image]); } } } } $new_body = $new_body . substr($orig_body, 0, $img_start + $img_st_close) . $image . '[/img]'; $orig_body = substr($orig_body, $img_start + $img_st_close + $img_len + strlen('[/img]')); if ($orig_body === false) { $orig_body = ''; } $img_start = strpos($orig_body, '[img'); $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false); $img_len = ($img_start !== false ? strpos(substr($orig_body, $img_start + $img_st_close + 1), '[/img]') : false); } $new_body = $new_body . $orig_body; return $new_body; } private static function hasPermissions($obj) { return !empty($obj['allow_cid']) || !empty($obj['allow_gid']) || !empty($obj['deny_cid']) || !empty($obj['deny_gid']); } private static function samePermissions($uid, $obj1, $obj2) { // first part is easy. Check that these are exactly the same. if (($obj1['allow_cid'] == $obj2['allow_cid']) && ($obj1['allow_gid'] == $obj2['allow_gid']) && ($obj1['deny_cid'] == $obj2['deny_cid']) && ($obj1['deny_gid'] == $obj2['deny_gid'])) { return true; } // This is harder. Parse all the permissions and compare the resulting set. $recipients1 = self::enumeratePermissions($obj1); $recipients2 = self::enumeratePermissions($obj2); sort($recipients1); sort($recipients2); /// @TODO Comparison of arrays, maybe use array_diff_assoc() here? return ($recipients1 == $recipients2); } /** * Returns an array of contact-ids that are allowed to see this object * * @param array $obj Item array with at least uid, allow_cid, allow_gid, deny_cid and deny_gid * @param bool $check_dead Prunes unavailable contacts from the result * @return array * @throws \Exception */ public static function enumeratePermissions(array $obj, bool $check_dead = false) { $aclFormater = DI::aclFormatter(); $allow_people = $aclFormater->expand($obj['allow_cid']); $allow_groups = Group::expand($obj['uid'], $aclFormater->expand($obj['allow_gid']), $check_dead); $deny_people = $aclFormater->expand($obj['deny_cid']); $deny_groups = Group::expand($obj['uid'], $aclFormater->expand($obj['deny_gid']), $check_dead); $recipients = array_unique(array_merge($allow_people, $allow_groups)); $deny = array_unique(array_merge($deny_people, $deny_groups)); $recipients = array_diff($recipients, $deny); return $recipients; } public static function expire(int $uid, int $days, string $network = "", bool $force = false) { if (!$uid || ($days < 1)) { return; } $condition = ["`uid` = ? AND NOT `deleted` AND `gravity` = ?", $uid, GRAVITY_PARENT]; /* * $expire_network_only = save your own wall posts * and just expire conversations started by others */ $expire_network_only = DI::pConfig()->get($uid, 'expire', 'network_only', false); if ($expire_network_only) { $condition[0] .= " AND NOT `wall`"; } if ($network != "") { $condition[0] .= " AND `network` = ?"; $condition[] = $network; } $condition[0] .= " AND `received` < UTC_TIMESTAMP() - INTERVAL ? DAY"; $condition[] = $days; $items = Post::select(['resource-id', 'starred', 'id', 'post-type', 'uid', 'uri-id'], $condition); if (!DBA::isResult($items)) { return; } $expire_items = DI::pConfig()->get($uid, 'expire', 'items', true); // Forcing expiring of items - but not notes and marked items if ($force) { $expire_items = true; } $expire_notes = DI::pConfig()->get($uid, 'expire', 'notes', true); $expire_starred = DI::pConfig()->get($uid, 'expire', 'starred', true); $expire_photos = DI::pConfig()->get($uid, 'expire', 'photos', false); $expired = 0; $priority = DI::config()->get('system', 'expire-notify-priority'); while ($item = Post::fetch($items)) { // don't expire filed items if (DBA::exists('post-category', ['uri-id' => $item['uri-id'], 'uid' => $item['uid'], 'type' => Post\Category::FILE])) { continue; } // Only expire posts, not photos and photo comments if (!$expire_photos && strlen($item['resource-id'])) { continue; } elseif (!$expire_starred && intval($item['starred'])) { continue; } elseif (!$expire_notes && ($item['post-type'] == self::PT_PERSONAL_NOTE)) { continue; } elseif (!$expire_items && ($item['post-type'] != self::PT_PERSONAL_NOTE)) { continue; } self::markForDeletionById($item['id'], $priority); ++$expired; } DBA::close($items); Logger::log('User ' . $uid . ": expired $expired items; expire items: $expire_items, expire notes: $expire_notes, expire starred: $expire_starred, expire photos: $expire_photos"); } public static function firstPostDate($uid, $wall = false) { $condition = ['gravity' => GRAVITY_PARENT, 'uid' => $uid, 'wall' => $wall, 'deleted' => false, 'visible' => true]; $params = ['order' => ['received' => false]]; $thread = Post::selectFirst(['received'], $condition, $params); if (DBA::isResult($thread)) { $postdate = substr(DateTimeFormat::local($thread['received']), 0, 10); return $postdate; } return false; } /** * add/remove activity to an item * * Toggle activities as like,dislike,attend of an item * * @param int $item_id * @param string $verb * Activity verb. One of * like, unlike, dislike, undislike, attendyes, unattendyes, * attendno, unattendno, attendmaybe, unattendmaybe, * announce, unannouce * @return bool * @throws \Friendica\Network\HTTPException\InternalServerErrorException * @throws \ImagickException * @hook 'post_local_end' * array $arr * 'post_id' => ID of posted item */ public static function performActivity(int $item_id, string $verb, int $uid) { if (empty($uid)) { return false; } Logger::notice('Start create activity', ['verb' => $verb, 'item' => $item_id, 'user' => $uid]); $item = Post::selectFirst(self::ITEM_FIELDLIST, ['id' => $item_id]); if (!DBA::isResult($item)) { Logger::log('like: unknown item ' . $item_id); return false; } $uri_id = $item['uri-id']; if (!in_array($item['uid'], [0, $uid])) { return false; } if (!Post::exists(['uri-id' => $item['parent-uri-id'], 'uid' => $uid])) { $stored = self::storeForUserByUriId($item['parent-uri-id'], $uid); if (($item['parent-uri-id'] == $item['uri-id']) && !empty($stored)) { $item = Post::selectFirst(self::ITEM_FIELDLIST, ['id' => $stored]); if (!DBA::isResult($item)) { Logger::info('Could not fetch just created item - should not happen', ['stored' => $stored, 'uid' => $uid, 'uri-id' => $uri_id]); return false; } } } // Retrieves the local post owner $owner = User::getOwnerDataById($uid); if (empty($owner)) { Logger::info('Empty owner for user', ['uid' => $uid]); return false; } // Retrieve the current logged in user's public contact $author_id = Contact::getIdForURL($owner['url']); if (empty($author_id)) { Logger::info('Empty public contact'); return false; } $activity = null; switch ($verb) { case 'like': case 'unlike': $activity = Activity::LIKE; break; case 'dislike': case 'undislike': $activity = Activity::DISLIKE; break; case 'attendyes': case 'unattendyes': $activity = Activity::ATTEND; break; case 'attendno': case 'unattendno': $activity = Activity::ATTENDNO; break; case 'attendmaybe': case 'unattendmaybe': $activity = Activity::ATTENDMAYBE; break; case 'follow': case 'unfollow': $activity = Activity::FOLLOW; break; case 'announce': case 'unannounce': $activity = Activity::ANNOUNCE; break; default: Logger::notice('unknown verb', ['verb' => $verb, 'item' => $item_id]); return false; } $mode = Strings::startsWith($verb, 'un') ? 'delete' : 'create'; // Enable activity toggling instead of on/off $event_verb_flag = $activity === Activity::ATTEND || $activity === Activity::ATTENDNO || $activity === Activity::ATTENDMAYBE; // Look for an existing verb row // Event participation activities are mutually exclusive, only one of them can exist at all times. if ($event_verb_flag) { $verbs = [Activity::ATTEND, Activity::ATTENDNO, Activity::ATTENDMAYBE]; // Translate to the index based activity index $vids = []; foreach ($verbs as $verb) { $vids[] = Verb::getID($verb); } } else { $vids = Verb::getID($activity); } $condition = ['vid' => $vids, 'deleted' => false, 'gravity' => GRAVITY_ACTIVITY, 'author-id' => $author_id, 'uid' => $item['uid'], 'thr-parent-id' => $uri_id]; $like_item = Post::selectFirst(['id', 'guid', 'verb'], $condition); if (DBA::isResult($like_item)) { /** * Truth table for existing activities * * | Inputs || Outputs | * |----------------------------||-------------------| * | Mode | Event | Same verb || Delete? | Return? | * |--------|-------|-----------||---------|---------| * | create | Yes | Yes || No | Yes | * | create | Yes | No || Yes | No | * | create | No | Yes || No | Yes | * | create | No | No || N/A† | * | delete | Yes | Yes || Yes | N/A‡ | * | delete | Yes | No || No | N/A‡ | * | delete | No | Yes || Yes | N/A‡ | * | delete | No | No || N/A† | * |--------|-------|-----------||---------|---------| * | A | B | C || A xor C | !B or C | * * † Can't happen: It's impossible to find an existing non-event activity without * the same verb because we are only looking for this single verb. * * ‡ The "mode = delete" is returning early whether an existing activity was found or not. */ if ($mode == 'create' xor $like_item['verb'] == $activity) { self::markForDeletionById($like_item['id']); } if (!$event_verb_flag || $like_item['verb'] == $activity) { return true; } } // No need to go further if we aren't creating anything if ($mode == 'delete') { return true; } $objtype = $item['resource-id'] ? Activity\ObjectType::IMAGE : Activity\ObjectType::NOTE; $new_item = [ 'guid' => System::createUUID(), 'uri' => self::newURI($item['uid']), 'uid' => $item['uid'], 'contact-id' => $owner['id'], 'wall' => $item['wall'], 'origin' => 1, 'network' => Protocol::DFRN, 'protocol' => Conversation::PARCEL_DIRECT, 'direction' => Conversation::PUSH, 'gravity' => GRAVITY_ACTIVITY, 'parent' => $item['id'], 'thr-parent' => $item['uri'], 'owner-id' => $author_id, 'author-id' => $author_id, 'body' => $activity, 'verb' => $activity, 'object-type' => $objtype, 'allow_cid' => $item['allow_cid'], 'allow_gid' => $item['allow_gid'], 'deny_cid' => $item['deny_cid'], 'deny_gid' => $item['deny_gid'], 'visible' => 1, 'unseen' => 1, ]; $signed = Diaspora::createLikeSignature($uid, $new_item); if (!empty($signed)) { $new_item['diaspora_signed_text'] = json_encode($signed); } $new_item_id = self::insert($new_item); // If the parent item isn't visible then set it to visible if (!$item['visible']) { self::update(['visible' => true], ['id' => $item['id']]); } $new_item['id'] = $new_item_id; Hook::callAll('post_local_end', $new_item); return true; } /** * Fetch the SQL condition for the given user id * * @param integer $owner_id User ID for which the permissions should be fetched * @return array condition */ public static function getPermissionsConditionArrayByUserId(int $owner_id) { $local_user = local_user(); $remote_user = Session::getRemoteContactID($owner_id); // default permissions - anonymous user $condition = ["`private` != ?", self::PRIVATE]; if ($local_user && ($local_user == $owner_id)) { // Profile owner - everything is visible $condition = []; } elseif ($remote_user) { // Authenticated visitor - fetch the matching permissionsets $set = PermissionSet::get($owner_id, $remote_user); if (!empty($set)) { $condition = ["(`private` != ? OR (`private` = ? AND `wall` AND `psid` IN (" . implode(', ', array_fill(0, count($set), '?')) . ")))", self::PRIVATE, self::PRIVATE]; $condition = array_merge($condition, $set); } } return $condition; } /** * Get a permission SQL string for the given user * * @param int $owner_id * @param string $table * @return string */ public static function getPermissionsSQLByUserId(int $owner_id, string $table = '') { $local_user = local_user(); $remote_user = Session::getRemoteContactID($owner_id); if (!empty($table)) { $table = DBA::quoteIdentifier($table) . '.'; } /* * Construct permissions * * default permissions - anonymous user */ $sql = sprintf(" AND " . $table . "`private` != %d", self::PRIVATE); // Profile owner - everything is visible if ($local_user && ($local_user == $owner_id)) { $sql = ''; } elseif ($remote_user) { /* * Authenticated visitor. Unless pre-verified, * check that the contact belongs to this $owner_id * and load the groups the visitor belongs to. * If pre-verified, the caller is expected to have already * done this and passed the groups into this function. */ $set = PermissionSet::get($owner_id, $remote_user); if (!empty($set)) { $sql_set = sprintf(" OR (" . $table . "`private` = %d AND " . $table . "`wall` AND " . $table . "`psid` IN (", self::PRIVATE) . implode(',', $set) . "))"; } else { $sql_set = ''; } $sql = sprintf(" AND (" . $table . "`private` != %d", self::PRIVATE) . $sql_set . ")"; } return $sql; } /** * get translated item type * * @param array $item * @param \Friendica\Core\L10n $l10n * @return string */ public static function postType(array $item, \Friendica\Core\L10n $l10n) { if (!empty($item['event-id'])) { return $l10n->t('event'); } elseif (!empty($item['resource-id'])) { return $l10n->t('photo'); } elseif ($item['gravity'] == GRAVITY_ACTIVITY) { return $l10n->t('activity'); } elseif ($item['gravity'] == GRAVITY_COMMENT) { return $l10n->t('comment'); } return $l10n->t('post'); } /** * Sets the "rendered-html" field of the provided item * * Body is preserved to avoid side-effects as we modify it just-in-time for spoilers and private image links * * @param array $item * * @throws \Friendica\Network\HTTPException\InternalServerErrorException * @todo Remove reference, simply return "rendered-html" and "rendered-hash" */ public static function putInCache(&$item) { // Save original body to prevent addons to modify it $body = $item['body']; $rendered_hash = $item['rendered-hash'] ?? ''; $rendered_html = $item['rendered-html'] ?? ''; if ($rendered_hash == '' || $rendered_html == '' || $rendered_hash != hash('md5', BBCode::VERSION . '::' . $body) || DI::config()->get('system', 'ignore_cache') ) { self::addRedirToImageTags($item); $item['rendered-html'] = BBCode::convert($item['body']); $item['rendered-hash'] = hash('md5', BBCode::VERSION . '::' . $body); $hook_data = ['item' => $item, 'rendered-html' => $item['rendered-html'], 'rendered-hash' => $item['rendered-hash']]; Hook::callAll('put_item_in_cache', $hook_data); $item['rendered-html'] = $hook_data['rendered-html']; $item['rendered-hash'] = $hook_data['rendered-hash']; unset($hook_data); // Update if the generated values differ from the existing ones if ((($rendered_hash != $item['rendered-hash']) || ($rendered_html != $item['rendered-html'])) && !empty($item['id'])) { self::update( [ 'rendered-html' => $item['rendered-html'], 'rendered-hash' => $item['rendered-hash'] ], ['id' => $item['id']] ); } } $item['body'] = $body; } /** * Find any non-embedded images in private items and add redir links to them * * @param array &$item The field array of an item row */ private static function addRedirToImageTags(array &$item) { $app = DI::app(); $matches = []; $cnt = preg_match_all('|\[img\](http[^\[]*?/photo/[a-fA-F0-9]+?(-[0-9]\.[\w]+?)?)\[\/img\]|', $item['body'], $matches, PREG_SET_ORDER); if ($cnt) { foreach ($matches as $mtch) { if (strpos($mtch[1], '/redir') !== false) { continue; } if ((local_user() == $item['uid']) && ($item['private'] == self::PRIVATE) && ($item['contact-id'] != $app->contact['id']) && ($item['network'] == Protocol::DFRN)) { $img_url = 'redir/' . $item['contact-id'] . '?url=' . urlencode($mtch[1]); $item['body'] = str_replace($mtch[0], '[img]' . $img_url . '[/img]', $item['body']); } } } } /** * Given an item array, convert the body element from bbcode to html and add smilie icons. * If attach is true, also add icons for item attachments. * * @param array $item * @param boolean $attach * @param boolean $is_preview * @return string item body html * @throws \Friendica\Network\HTTPException\InternalServerErrorException * @throws \ImagickException * @hook prepare_body_init item array before any work * @hook prepare_body_content_filter ('item'=>item array, 'filter_reasons'=>string array) before first bbcode to html * @hook prepare_body ('item'=>item array, 'html'=>body string, 'is_preview'=>boolean, 'filter_reasons'=>string array) after first bbcode to html * @hook prepare_body_final ('item'=>item array, 'html'=>body string) after attach icons and blockquote special case handling (spoiler, author) */ public static function prepareBody(array &$item, $attach = false, $is_preview = false) { $a = DI::app(); Hook::callAll('prepare_body_init', $item); // In order to provide theme developers more possibilities, event items // are treated differently. if ($item['object-type'] === Activity\ObjectType::EVENT && isset($item['event-id'])) { $ev = Event::getItemHTML($item); return $ev; } $tags = Tag::populateFromItem($item); $item['tags'] = $tags['tags']; $item['hashtags'] = $tags['hashtags']; $item['mentions'] = $tags['mentions']; // Compile eventual content filter reasons $filter_reasons = []; if (!$is_preview && public_contact() != $item['author-id']) { if (!empty($item['content-warning']) && (!local_user() || !DI::pConfig()->get(local_user(), 'system', 'disable_cw', false))) { $filter_reasons[] = DI::l10n()->t('Content warning: %s', $item['content-warning']); } $hook_data = [ 'item' => $item, 'filter_reasons' => $filter_reasons ]; Hook::callAll('prepare_body_content_filter', $hook_data); $filter_reasons = $hook_data['filter_reasons']; unset($hook_data); } self::putInCache($item); $s = $item["rendered-html"]; $hook_data = [ 'item' => $item, 'html' => $s, 'preview' => $is_preview, 'filter_reasons' => $filter_reasons ]; Hook::callAll('prepare_body', $hook_data); $s = $hook_data['html']; unset($hook_data); if (!$attach) { // Replace the blockquotes with quotes that are used in mails. $mailquote = '
'; $s = str_replace(['
', '
', '
'], [$mailquote, $mailquote, $mailquote], $s); return $s; } $as = ''; $vhead = false; foreach (Post\Media::getByURIId($item['uri-id'], [Post\Media::DOCUMENT, Post\Media::TORRENT, Post\Media::UNKNOWN]) as $attachment) { $mime = $attachment['mimetype']; $author = ['uid' => 0, 'id' => $item['author-id'], 'network' => $item['author-network'], 'url' => $item['author-link']]; $the_url = Contact::magicLinkByContact($author, $attachment['url']); if (strpos($mime, 'video') !== false) { if (!$vhead) { $vhead = true; DI::page()['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('videos_head.tpl')); } $as .= Renderer::replaceMacros(Renderer::getMarkupTemplate('video_top.tpl'), [ '$video' => [ 'id' => $item['author-id'], 'title' => DI::l10n()->t('View Video'), 'src' => $the_url, 'mime' => $mime, ], ]); } $filetype = strtolower(substr($mime, 0, strpos($mime, '/'))); if ($filetype) { $filesubtype = strtolower(substr($mime, strpos($mime, '/') + 1)); $filesubtype = str_replace('.', '-', $filesubtype); } else { $filetype = 'unkn'; $filesubtype = 'unkn'; } $title = Strings::escapeHtml(trim(($attachment['description'] ?? '') ?: $attachment['url'])); $title .= ' ' . ($attachment['size'] ?? 0) . ' ' . DI::l10n()->t('bytes'); $icon = '
'; $as .= '' . $icon . ''; } if ($as != '') { $s .= '
'.$as.'
'; } // Map. if (strpos($s, '
') !== false && !empty($item['coord'])) { $x = Map::byCoordinates(trim($item['coord'])); if ($x) { $s = preg_replace('/\
/', '$0' . $x, $s); } } // Replace friendica image url size with theme preference. if (!empty($a->theme_info['item_image_size'])) { $ps = $a->theme_info['item_image_size']; $s = preg_replace('|(]+src="[^"]+/photo/[0-9a-f]+)-[0-9]|', "$1-" . $ps, $s); } $s = HTML::applyContentFilter($s, $filter_reasons); $hook_data = ['item' => $item, 'html' => $s]; Hook::callAll('prepare_body_final', $hook_data); return $hook_data['html']; } /** * get private link for item * * @param array $item * @return boolean|array False if item has not plink, otherwise array('href'=>plink url, 'title'=>translated title) * @throws \Exception */ public static function getPlink($item) { if (local_user()) { $ret = [ 'href' => "display/" . $item['guid'], 'orig' => "display/" . $item['guid'], 'title' => DI::l10n()->t('View on separate page'), 'orig_title' => DI::l10n()->t('view on separate page'), ]; if (!empty($item['plink'])) { $ret["href"] = DI::baseUrl()->remove($item['plink']); $ret["title"] = DI::l10n()->t('link to source'); } } elseif (!empty($item['plink']) && ($item['private'] != self::PRIVATE)) { $ret = [ 'href' => $item['plink'], 'orig' => $item['plink'], 'title' => DI::l10n()->t('link to source'), ]; } else { $ret = []; } return $ret; } /** * Is the given item array a post that is sent as starting post to a forum? * * @param array $item * @param array $owner * * @return boolean "true" when it is a forum post */ public static function isForumPost(array $item, array $owner = []) { if (empty($owner)) { $owner = User::getOwnerDataById($item['uid']); if (empty($owner)) { return false; } } if (($item['author-id'] == $item['owner-id']) || ($owner['id'] == $item['contact-id']) || ($item['uri-id'] != $item['parent-uri-id']) || $item['origin']) { return false; } return Contact::isForum($item['contact-id']); } /** * Search item id for given URI or plink * * @param string $uri * @param integer $uid * * @return integer item id */ public static function searchByLink($uri, $uid = 0) { $ssl_uri = str_replace('http://', 'https://', $uri); $uris = [$uri, $ssl_uri, Strings::normaliseLink($uri)]; $item = Post::selectFirst(['id'], ['uri' => $uris, 'uid' => $uid]); if (DBA::isResult($item)) { return $item['id']; } $item = Post::selectFirst(['id'], ['plink' => $uris, 'uid' => $uid]); if (DBA::isResult($item)) { return $item['id']; } return 0; } /** * Return the URI for a link to the post * * @param string $uri URI or link to post * * @return string URI */ public static function getURIByLink(string $uri) { $ssl_uri = str_replace('http://', 'https://', $uri); $uris = [$uri, $ssl_uri, Strings::normaliseLink($uri)]; $item = Post::selectFirst(['uri'], ['uri' => $uris]); if (DBA::isResult($item)) { return $item['uri']; } $item = Post::selectFirst(['uri'], ['plink' => $uris]); if (DBA::isResult($item)) { return $item['uri']; } return ''; } /** * Fetches item for given URI or plink * * @param string $uri * @param integer $uid * * @return integer item id */ public static function fetchByLink(string $uri, int $uid = 0) { Logger::info('Trying to fetch link', ['uid' => $uid, 'uri' => $uri]); $item_id = self::searchByLink($uri, $uid); if (!empty($item_id)) { Logger::info('Link found', ['uid' => $uid, 'uri' => $uri, 'id' => $item_id]); return $item_id; } if ($fetched_uri = ActivityPub\Processor::fetchMissingActivity($uri)) { $item_id = self::searchByLink($fetched_uri, $uid); } else { $item_id = Diaspora::fetchByURL($uri); } if (!empty($item_id)) { Logger::info('Link fetched', ['uid' => $uid, 'uri' => $uri, 'id' => $item_id]); return $item_id; } Logger::info('Link not found', ['uid' => $uid, 'uri' => $uri]); return 0; } /** * Return share data from an item array (if the item is shared item) * We are providing the complete Item array, because at some time in the future * we hopefully will define these values not in the body anymore but in some item fields. * This function is meant to replace all similar functions in the system. * * @param array $item * * @return array with share information */ public static function getShareArray($item) { if (!preg_match("/(.*?)\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", $item['body'], $matches)) { return []; } $attribute_string = $matches[2]; $attributes = ['comment' => trim($matches[1]), 'shared' => trim($matches[3])]; foreach (['author', 'profile', 'avatar', 'guid', 'posted', 'link'] as $field) { if (preg_match("/$field=(['\"])(.+?)\\1/ism", $attribute_string, $matches)) { $attributes[$field] = trim(html_entity_decode($matches[2] ?? '', ENT_QUOTES, 'UTF-8')); } } return $attributes; } /** * Fetch item information for shared items from the original items and adds it. * * @param array $item * * @return array item array with data from the original item */ public static function addShareDataFromOriginal(array $item) { $shared = self::getShareArray($item); if (empty($shared)) { return $item; } // Real reshares always have got a GUID. if (empty($shared['guid'])) { return $item; } $uid = $item['uid'] ?? 0; // first try to fetch the item via the GUID. This will work for all reshares that had been created on this system $shared_item = Post::selectFirst(['title', 'body'], ['guid' => $shared['guid'], 'uid' => [0, $uid]]); if (!DBA::isResult($shared_item)) { if (empty($shared['link'])) { return $item; } // Otherwhise try to find (and possibly fetch) the item via the link. This should work for Diaspora and ActivityPub posts $id = self::fetchByLink($shared['link'] ?? '', $uid); if (empty($id)) { Logger::info('Original item not found', ['url' => $shared['link'] ?? '', 'callstack' => System::callstack()]); return $item; } $shared_item = Post::selectFirst(['title', 'body'], ['id' => $id]); if (!DBA::isResult($shared_item)) { return $item; } Logger::info('Got shared data from url', ['url' => $shared['link'], 'callstack' => System::callstack()]); } else { Logger::info('Got shared data from guid', ['guid' => $shared['guid'], 'callstack' => System::callstack()]); } if (!empty($shared_item['title'])) { $body = '[h3]' . $shared_item['title'] . "[/h3]\n" . $shared_item['body']; unset($shared_item['title']); } else { $body = $shared_item['body']; } $item['body'] = preg_replace("/\[share ([^\[\]]*)\].*\[\/share\]/ism", '[share $1]' . $body . '[/share]', $item['body']); unset($shared_item['body']); return array_merge($item, $shared_item); } /** * Check a prospective item array against user-level permissions * * @param array $item Expected keys: uri, gravity, and * author-link if is author-id is set, * owner-link if is owner-id is set, * causer-link if is causer-id is set. * @param int $user_id Local user ID * @return bool * @throws \Exception */ protected static function isAllowedByUser(array $item, int $user_id) { if (!empty($item['author-id']) && Contact\User::isBlocked($item['author-id'], $user_id)) { Logger::notice('Author is blocked by user', ['author-link' => $item['author-link'], 'uid' => $user_id, 'item-uri' => $item['uri']]); return false; } if (!empty($item['owner-id']) && Contact\User::isBlocked($item['owner-id'], $user_id)) { Logger::notice('Owner is blocked by user', ['owner-link' => $item['owner-link'], 'uid' => $user_id, 'item-uri' => $item['uri']]); return false; } // The causer is set during a thread completion, for example because of a reshare. It countains the responsible actor. if (!empty($item['causer-id']) && Contact\User::isBlocked($item['causer-id'], $user_id)) { Logger::notice('Causer is blocked by user', ['causer-link' => $item['causer-link'] ?? $item['causer-id'], 'uid' => $user_id, 'item-uri' => $item['uri']]); return false; } if (!empty($item['causer-id']) && ($item['gravity'] === GRAVITY_PARENT) && Contact\User::isIgnored($item['causer-id'], $user_id)) { Logger::notice('Causer is ignored by user', ['causer-link' => $item['causer-link'] ?? $item['causer-id'], 'uid' => $user_id, 'item-uri' => $item['uri']]); return false; } return true; } }