Activitypub_follow.php 3.4 KB

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  1. <?php
  2. /**
  3. * GNU social - a federating social network
  4. *
  5. * ActivityPubPlugin implementation for GNU Social
  6. *
  7. * LICENCE: This program is free software: you can redistribute it and/or modify
  8. * it under the terms of the GNU Affero General Public License as published by
  9. * the Free Software Foundation, either version 3 of the License, or
  10. * (at your option) any later version.
  11. *
  12. * This program is distributed in the hope that it will be useful,
  13. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15. * GNU Affero General Public License for more details.
  16. *
  17. * You should have received a copy of the GNU Affero General Public License
  18. * along with this program. If not, see <http://www.gnu.org/licenses/>.
  19. *
  20. * @category Plugin
  21. * @package GNUsocial
  22. * @author Diogo Cordeiro <diogo@fc.up.pt>
  23. * @copyright 2018 Free Software Foundation http://fsf.org
  24. * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
  25. * @link https://www.gnu.org/software/social/
  26. */
  27. if (!defined('GNUSOCIAL')) {
  28. exit(1);
  29. }
  30. /**
  31. * ActivityPub error representation
  32. *
  33. * @category Plugin
  34. * @package GNUsocial
  35. * @author Diogo Cordeiro <diogo@fc.up.pt>
  36. * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
  37. * @link http://www.gnu.org/software/social/
  38. */
  39. class Activitypub_follow extends Managed_DataObject
  40. {
  41. /**
  42. * Generates an ActivityPub representation of a subscription
  43. *
  44. * @author Diogo Cordeiro <diogo@fc.up.pt>
  45. * @param string $actor
  46. * @param string $object
  47. * @return pretty array to be used in a response
  48. */
  49. public static function follow_to_array($actor, $object)
  50. {
  51. $res = [
  52. '@context' => 'https://www.w3.org/ns/activitystreams',
  53. 'id' => common_root_url().'follow_from_'.urlencode($actor).'_to_'.urlencode($object),
  54. 'type' => 'Follow',
  55. 'actor' => $actor,
  56. 'object' => $object
  57. ];
  58. return $res;
  59. }
  60. /**
  61. * Handles a Follow Activity received by our inbox.
  62. *
  63. * @author Diogo Cordeiro <diogo@fc.up.pt>
  64. * @param Profile $actor_profile Remote Actor
  65. * @param string $object Local Actor
  66. * @throws Exception
  67. */
  68. public static function follow($actor_profile, $object)
  69. {
  70. // Get Actor's Aprofile
  71. $actor_aprofile = Activitypub_profile::from_profile($actor_profile);
  72. // Get Object profile
  73. $object_profile = new Activitypub_explorer;
  74. $object_profile = $object_profile->lookup($object)[0];
  75. if (!Subscription::exists($actor_profile, $object_profile)) {
  76. Subscription::start($actor_profile, $object_profile);
  77. common_debug('ActivityPubPlugin: Accepted Follow request from '.ActivityPubPlugin::actor_uri($actor_profile).' to '.$object);
  78. } else {
  79. common_debug('ActivityPubPlugin: Received a repeated Follow request from '.ActivityPubPlugin::actor_uri($actor_profile).' to '.$object);
  80. }
  81. // Notify remote instance that we have accepted their request
  82. common_debug('ActivityPubPlugin: Notifying remote instance that we have accepted their Follow request request from '.ActivityPubPlugin::actor_uri($actor_profile).' to '.$object);
  83. $postman = new Activitypub_postman($actor_profile, [$actor_aprofile]);
  84. $postman->accept_follow();
  85. }
  86. }