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-rw-r--r--apps/dav/lib/CardDAV/Activity/Backend.php472
1 files changed, 472 insertions, 0 deletions
diff --git a/apps/dav/lib/CardDAV/Activity/Backend.php b/apps/dav/lib/CardDAV/Activity/Backend.php
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+++ b/apps/dav/lib/CardDAV/Activity/Backend.php
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+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2021 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCA\DAV\CardDAV\Activity;
+
+use OCA\DAV\CardDAV\Activity\Provider\Addressbook;
+use OCP\Activity\IEvent;
+use OCP\Activity\IManager as IActivityManager;
+use OCP\App\IAppManager;
+use OCP\IGroup;
+use OCP\IGroupManager;
+use OCP\IUser;
+use OCP\IUserManager;
+use OCP\IUserSession;
+use Sabre\CardDAV\Plugin;
+use Sabre\VObject\Reader;
+
+class Backend {
+
+ public function __construct(
+ protected IActivityManager $activityManager,
+ protected IGroupManager $groupManager,
+ protected IUserSession $userSession,
+ protected IAppManager $appManager,
+ protected IUserManager $userManager,
+ ) {
+ }
+
+ /**
+ * Creates activities when an addressbook was creates
+ *
+ * @param array $addressbookData
+ */
+ public function onAddressbookCreate(array $addressbookData): void {
+ $this->triggerAddressbookActivity(Addressbook::SUBJECT_ADD, $addressbookData);
+ }
+
+ /**
+ * Creates activities when a calendar was updated
+ *
+ * @param array $addressbookData
+ * @param array $shares
+ * @param array $properties
+ */
+ public function onAddressbookUpdate(array $addressbookData, array $shares, array $properties): void {
+ $this->triggerAddressbookActivity(Addressbook::SUBJECT_UPDATE, $addressbookData, $shares, $properties);
+ }
+
+ /**
+ * Creates activities when a calendar was deleted
+ *
+ * @param array $addressbookData
+ * @param array $shares
+ */
+ public function onAddressbookDelete(array $addressbookData, array $shares): void {
+ $this->triggerAddressbookActivity(Addressbook::SUBJECT_DELETE, $addressbookData, $shares);
+ }
+
+ /**
+ * Creates activities for all related users when a calendar was touched
+ *
+ * @param string $action
+ * @param array $addressbookData
+ * @param array $shares
+ * @param array $changedProperties
+ */
+ protected function triggerAddressbookActivity(string $action, array $addressbookData, array $shares = [], array $changedProperties = []): void {
+ if (!isset($addressbookData['principaluri'])) {
+ return;
+ }
+
+ $principalUri = $addressbookData['principaluri'];
+
+ // We are not interested in changes from the system addressbook
+ if ($principalUri === 'principals/system/system') {
+ return;
+ }
+
+ $principal = explode('/', $principalUri);
+ $owner = array_pop($principal);
+
+ $currentUser = $this->userSession->getUser();
+ if ($currentUser instanceof IUser) {
+ $currentUser = $currentUser->getUID();
+ } else {
+ $currentUser = $owner;
+ }
+
+ $event = $this->activityManager->generateEvent();
+ $event->setApp('dav')
+ ->setObject('addressbook', (int)$addressbookData['id'])
+ ->setType('contacts')
+ ->setAuthor($currentUser);
+
+ $changedVisibleInformation = array_intersect([
+ '{DAV:}displayname',
+ '{' . Plugin::NS_CARDDAV . '}addressbook-description',
+ ], array_keys($changedProperties));
+
+ if (empty($shares) || ($action === Addressbook::SUBJECT_UPDATE && empty($changedVisibleInformation))) {
+ $users = [$owner];
+ } else {
+ $users = $this->getUsersForShares($shares);
+ $users[] = $owner;
+ }
+
+ foreach ($users as $user) {
+ if ($action === Addressbook::SUBJECT_DELETE && !$this->userManager->userExists($user)) {
+ // Avoid creating addressbook_delete activities for deleted users
+ continue;
+ }
+
+ $event->setAffectedUser($user)
+ ->setSubject(
+ $user === $currentUser ? $action . '_self' : $action,
+ [
+ 'actor' => $currentUser,
+ 'addressbook' => [
+ 'id' => (int)$addressbookData['id'],
+ 'uri' => $addressbookData['uri'],
+ 'name' => $addressbookData['{DAV:}displayname'],
+ ],
+ ]
+ );
+ $this->activityManager->publish($event);
+ }
+ }
+
+ /**
+ * Creates activities for all related users when an addressbook was (un-)shared
+ *
+ * @param array $addressbookData
+ * @param array $shares
+ * @param array $add
+ * @param array $remove
+ */
+ public function onAddressbookUpdateShares(array $addressbookData, array $shares, array $add, array $remove): void {
+ $principal = explode('/', $addressbookData['principaluri']);
+ $owner = $principal[2];
+
+ $currentUser = $this->userSession->getUser();
+ if ($currentUser instanceof IUser) {
+ $currentUser = $currentUser->getUID();
+ } else {
+ $currentUser = $owner;
+ }
+
+ $event = $this->activityManager->generateEvent();
+ $event->setApp('dav')
+ ->setObject('addressbook', (int)$addressbookData['id'])
+ ->setType('contacts')
+ ->setAuthor($currentUser);
+
+ foreach ($remove as $principal) {
+ // principal:principals/users/test
+ $parts = explode(':', $principal, 2);
+ if ($parts[0] !== 'principal') {
+ continue;
+ }
+ $principal = explode('/', $parts[1]);
+
+ if ($principal[1] === 'users') {
+ $this->triggerActivityUser(
+ $principal[2],
+ $event,
+ $addressbookData,
+ Addressbook::SUBJECT_UNSHARE_USER,
+ Addressbook::SUBJECT_DELETE . '_self'
+ );
+
+ if ($owner !== $principal[2]) {
+ $parameters = [
+ 'actor' => $event->getAuthor(),
+ 'addressbook' => [
+ 'id' => (int)$addressbookData['id'],
+ 'uri' => $addressbookData['uri'],
+ 'name' => $addressbookData['{DAV:}displayname'],
+ ],
+ 'user' => $principal[2],
+ ];
+
+ if ($owner === $event->getAuthor()) {
+ $subject = Addressbook::SUBJECT_UNSHARE_USER . '_you';
+ } elseif ($principal[2] === $event->getAuthor()) {
+ $subject = Addressbook::SUBJECT_UNSHARE_USER . '_self';
+ } else {
+ $event->setAffectedUser($event->getAuthor())
+ ->setSubject(Addressbook::SUBJECT_UNSHARE_USER . '_you', $parameters);
+ $this->activityManager->publish($event);
+
+ $subject = Addressbook::SUBJECT_UNSHARE_USER . '_by';
+ }
+
+ $event->setAffectedUser($owner)
+ ->setSubject($subject, $parameters);
+ $this->activityManager->publish($event);
+ }
+ } elseif ($principal[1] === 'groups') {
+ $this->triggerActivityGroup($principal[2], $event, $addressbookData, Addressbook::SUBJECT_UNSHARE_USER);
+
+ $parameters = [
+ 'actor' => $event->getAuthor(),
+ 'addressbook' => [
+ 'id' => (int)$addressbookData['id'],
+ 'uri' => $addressbookData['uri'],
+ 'name' => $addressbookData['{DAV:}displayname'],
+ ],
+ 'group' => $principal[2],
+ ];
+
+ if ($owner === $event->getAuthor()) {
+ $subject = Addressbook::SUBJECT_UNSHARE_GROUP . '_you';
+ } else {
+ $event->setAffectedUser($event->getAuthor())
+ ->setSubject(Addressbook::SUBJECT_UNSHARE_GROUP . '_you', $parameters);
+ $this->activityManager->publish($event);
+
+ $subject = Addressbook::SUBJECT_UNSHARE_GROUP . '_by';
+ }
+
+ $event->setAffectedUser($owner)
+ ->setSubject($subject, $parameters);
+ $this->activityManager->publish($event);
+ }
+ }
+
+ foreach ($add as $share) {
+ if ($this->isAlreadyShared($share['href'], $shares)) {
+ continue;
+ }
+
+ // principal:principals/users/test
+ $parts = explode(':', $share['href'], 2);
+ if ($parts[0] !== 'principal') {
+ continue;
+ }
+ $principal = explode('/', $parts[1]);
+
+ if ($principal[1] === 'users') {
+ $this->triggerActivityUser($principal[2], $event, $addressbookData, Addressbook::SUBJECT_SHARE_USER);
+
+ if ($owner !== $principal[2]) {
+ $parameters = [
+ 'actor' => $event->getAuthor(),
+ 'addressbook' => [
+ 'id' => (int)$addressbookData['id'],
+ 'uri' => $addressbookData['uri'],
+ 'name' => $addressbookData['{DAV:}displayname'],
+ ],
+ 'user' => $principal[2],
+ ];
+
+ if ($owner === $event->getAuthor()) {
+ $subject = Addressbook::SUBJECT_SHARE_USER . '_you';
+ } else {
+ $event->setAffectedUser($event->getAuthor())
+ ->setSubject(Addressbook::SUBJECT_SHARE_USER . '_you', $parameters);
+ $this->activityManager->publish($event);
+
+ $subject = Addressbook::SUBJECT_SHARE_USER . '_by';
+ }
+
+ $event->setAffectedUser($owner)
+ ->setSubject($subject, $parameters);
+ $this->activityManager->publish($event);
+ }
+ } elseif ($principal[1] === 'groups') {
+ $this->triggerActivityGroup($principal[2], $event, $addressbookData, Addressbook::SUBJECT_SHARE_USER);
+
+ $parameters = [
+ 'actor' => $event->getAuthor(),
+ 'addressbook' => [
+ 'id' => (int)$addressbookData['id'],
+ 'uri' => $addressbookData['uri'],
+ 'name' => $addressbookData['{DAV:}displayname'],
+ ],
+ 'group' => $principal[2],
+ ];
+
+ if ($owner === $event->getAuthor()) {
+ $subject = Addressbook::SUBJECT_SHARE_GROUP . '_you';
+ } else {
+ $event->setAffectedUser($event->getAuthor())
+ ->setSubject(Addressbook::SUBJECT_SHARE_GROUP . '_you', $parameters);
+ $this->activityManager->publish($event);
+
+ $subject = Addressbook::SUBJECT_SHARE_GROUP . '_by';
+ }
+
+ $event->setAffectedUser($owner)
+ ->setSubject($subject, $parameters);
+ $this->activityManager->publish($event);
+ }
+ }
+ }
+
+ /**
+ * Checks if a calendar is already shared with a principal
+ *
+ * @param string $principal
+ * @param array[] $shares
+ * @return bool
+ */
+ protected function isAlreadyShared(string $principal, array $shares): bool {
+ foreach ($shares as $share) {
+ if ($principal === $share['href']) {
+ return true;
+ }
+ }
+
+ return false;
+ }
+
+ /**
+ * Creates the given activity for all members of the given group
+ *
+ * @param string $gid
+ * @param IEvent $event
+ * @param array $properties
+ * @param string $subject
+ */
+ protected function triggerActivityGroup(string $gid, IEvent $event, array $properties, string $subject): void {
+ $group = $this->groupManager->get($gid);
+
+ if ($group instanceof IGroup) {
+ foreach ($group->getUsers() as $user) {
+ // Exclude current user
+ if ($user->getUID() !== $event->getAuthor()) {
+ $this->triggerActivityUser($user->getUID(), $event, $properties, $subject);
+ }
+ }
+ }
+ }
+
+ /**
+ * Creates the given activity for the given user
+ *
+ * @param string $user
+ * @param IEvent $event
+ * @param array $properties
+ * @param string $subject
+ * @param string $subjectSelf
+ */
+ protected function triggerActivityUser(string $user, IEvent $event, array $properties, string $subject, string $subjectSelf = ''): void {
+ $event->setAffectedUser($user)
+ ->setSubject(
+ $user === $event->getAuthor() && $subjectSelf ? $subjectSelf : $subject,
+ [
+ 'actor' => $event->getAuthor(),
+ 'addressbook' => [
+ 'id' => (int)$properties['id'],
+ 'uri' => $properties['uri'],
+ 'name' => $properties['{DAV:}displayname'],
+ ],
+ ]
+ );
+
+ $this->activityManager->publish($event);
+ }
+
+ /**
+ * Creates activities when a card was created/updated/deleted
+ *
+ * @param string $action
+ * @param array $addressbookData
+ * @param array $shares
+ * @param array $cardData
+ */
+ public function triggerCardActivity(string $action, array $addressbookData, array $shares, array $cardData): void {
+ if (!isset($addressbookData['principaluri'])) {
+ return;
+ }
+
+ $principalUri = $addressbookData['principaluri'];
+
+ // We are not interested in changes from the system addressbook
+ if ($principalUri === 'principals/system/system') {
+ return;
+ }
+
+ $principal = explode('/', $principalUri);
+ $owner = array_pop($principal);
+
+ $currentUser = $this->userSession->getUser();
+ if ($currentUser instanceof IUser) {
+ $currentUser = $currentUser->getUID();
+ } else {
+ $currentUser = $owner;
+ }
+
+ $card = $this->getCardNameAndId($cardData);
+
+ $event = $this->activityManager->generateEvent();
+ $event->setApp('dav')
+ ->setObject('addressbook', (int)$addressbookData['id'])
+ ->setType('contacts')
+ ->setAuthor($currentUser);
+
+ $users = $this->getUsersForShares($shares);
+ $users[] = $owner;
+
+ // Users for share can return the owner itself if the calendar is published
+ foreach (array_unique($users) as $user) {
+ $params = [
+ 'actor' => $event->getAuthor(),
+ 'addressbook' => [
+ 'id' => (int)$addressbookData['id'],
+ 'uri' => $addressbookData['uri'],
+ 'name' => $addressbookData['{DAV:}displayname'],
+ ],
+ 'card' => [
+ 'id' => $card['id'],
+ 'name' => $card['name'],
+ ],
+ ];
+
+
+ $event->setAffectedUser($user)
+ ->setSubject(
+ $user === $currentUser ? $action . '_self' : $action,
+ $params
+ );
+
+ $this->activityManager->publish($event);
+ }
+ }
+
+ /**
+ * @param array $cardData
+ * @return string[]
+ */
+ protected function getCardNameAndId(array $cardData): array {
+ $vObject = Reader::read($cardData['carddata']);
+ return ['id' => (string)$vObject->UID, 'name' => (string)($vObject->FN ?? '')];
+ }
+
+ /**
+ * Get all users that have access to a given calendar
+ *
+ * @param array $shares
+ * @return string[]
+ */
+ protected function getUsersForShares(array $shares): array {
+ $users = $groups = [];
+ foreach ($shares as $share) {
+ $principal = explode('/', $share['{http://owncloud.org/ns}principal']);
+ if ($principal[1] === 'users') {
+ $users[] = $principal[2];
+ } elseif ($principal[1] === 'groups') {
+ $groups[] = $principal[2];
+ }
+ }
+
+ if (!empty($groups)) {
+ foreach ($groups as $gid) {
+ $group = $this->groupManager->get($gid);
+ if ($group instanceof IGroup) {
+ foreach ($group->getUsers() as $user) {
+ $users[] = $user->getUID();
+ }
+ }
+ }
+ }
+
+ return array_unique($users);
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-08-16 07:46:07 +0000