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[ActivityPub] Remove ActivityPub plugin until we're ready to work on it, as it needs significant work

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# Contributing
When contributing to this repository, please first discuss the change you wish to make via issue,
email, or any other method with the owners of this repository before making a change.
Please note we have a code of conduct, please follow it in all your interactions with the project.
# Coding Style
- We follow every [PSR-12](https://www.php-fig.org/psr/psr-12/) ...
- ... except camelCase, that's too bad, we use snake_case
## Merge Request Process
1. Ensure you strip any trailing spaces off
2. Increase the version numbers in any examples files and the README.md to the new version that this
Pull Request would represent. The versioning scheme we use is [SemVer](http://semver.org/).
3. You may merge the Pull Request in once you have the sign-off of two other developers, or if you
do not have permission to do that, you may request the second reviewer to merge it for you.
## Code of Conduct
### Our Pledge
In the interest of fostering an open and welcoming environment, we as
contributors and maintainers pledge to making participation in our project and
our community a harassment-free experience for everyone, regardless of age, body
size, disability, ethnicity, gender identity and expression, level of experience,
nationality, personal appearance, race, religion, or sexual identity and
orientation.
### Our Standards
Examples of behavior that contributes to creating a positive environment
include:
* Using welcoming and inclusive language
* Being respectful of differing viewpoints and experiences
* Gracefully accepting constructive criticism
* Focusing on what is best for the community
* Showing empathy towards other community members
Examples of unacceptable behavior by participants include:
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advances
* Trolling, insulting/derogatory comments, and personal or political attacks
* Public or private harassment
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* Other conduct which could reasonably be considered inappropriate in a
professional setting
### Our Responsibilities
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response to any instances of unacceptable behavior.
Project maintainers have the right and responsibility to remove, edit, or
reject comments, commits, code, wiki edits, issues, and other contributions
that are not aligned to this Code of Conduct, or to ban temporarily or
permanently any contributor for other behaviors that they deem inappropriate,
threatening, offensive, or harmful.
### Scope
This Code of Conduct applies both within project spaces and in public spaces
when an individual is representing the project or its community. Examples of
representing a project or community include using an official project e-mail
address, posting via an official social media account, or acting as an appointed
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Further details of specific enforcement policies may be posted separately.
Project maintainers who do not follow or enforce the Code of Conduct in good
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### Attribution
This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
available at [http://contributor-covenant.org/version/1/4][version]
[homepage]: http://contributor-covenant.org
[version]: http://contributor-covenant.org/version/1/4/

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GNU AFFERO GENERAL PUBLIC LICENSE
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PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If your software can interact with users remotely through a computer
network, you should also make sure that it provides a way for users to
get its source. For example, if your program is a web application, its
interface could display a "Source" link that leads users to an archive
of the code. There are many ways you could offer source, and different
solutions will be better for different programs; see section 13 for the
specific requirements.
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU AGPL, see
<http://www.gnu.org/licenses/>.

844
plugins/ActivityPub/Entity/ActivityPubActor.php
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@ -1,844 +0,0 @@
<?php
// {{{ License
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
// }}}
/**
* ActivityPub's Remote Actor
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @author Hugo Sales <hugo@hsal.es>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
namespace Plugin\ActivityPub\Entity;
class ActivityPubActor
{
// {{{ Autocode
private string $uri;
private int $profile_id;
private string $inboxuri;
private ?string $sharedInboxuri;
private ?DateTimeInterface $created;
private DateTimeInterface $modified;
public function setUri(string $uri): self
{
$this->uri = $uri;
return $this;
}
public function getUri(): string
{
return $this->uri;
}
public function setProfileId(int $profile_id): self
{
$this->profile_id = $profile_id;
return $this;
}
public function getProfileId(): int
{
return $this->profile_id;
}
public function setInboxuri(string $inboxuri): self
{
$this->inboxuri = $inboxuri;
return $this;
}
public function getInboxuri(): string
{
return $this->inboxuri;
}
public function setSharedInboxuri(?string $sharedInboxuri): self
{
$this->sharedInboxuri = $sharedInboxuri;
return $this;
}
public function getSharedInboxuri(): ?string
{
return $this->sharedInboxuri;
}
public function setCreated(?DateTimeInterface $created): self
{
$this->created = $created;
return $this;
}
public function getCreated(): ?DateTimeInterface
{
return $this->created;
}
public function setModified(DateTimeInterface $modified): self
{
$this->modified = $modified;
return $this;
}
public function getModified(): DateTimeInterface
{
return $this->modified;
}
// }}} Autocode
/**
* Generates a pretty profile from a Profile object
*
* @param Profile $profile
*
* @throws InvalidUrlException
* @throws ServerException
* @throws Exception
*
* @return array array to be used in a response
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function profile_to_array(Profile $profile): array
{
$uri = $profile->getUri();
$id = $profile->getID();
$rsa = new Activitypub_rsa();
$public_key = $rsa->ensure_public_key($profile);
unset($rsa);
$res = [
'@context' => [
'https://www.w3.org/ns/activitystreams',
'https://w3id.org/security/v1',
[
'manuallyApprovesFollowers' => 'as:manuallyApprovesFollowers',
],
],
'id' => $uri,
'type' => 'Person',
'following' => common_local_url('apActorFollowing', ['id' => $id]),
'followers' => common_local_url('apActorFollowers', ['id' => $id]),
'liked' => common_local_url('apActorLiked', ['id' => $id]),
'inbox' => common_local_url('apInbox', ['id' => $id]),
'outbox' => common_local_url('apActorOutbox', ['id' => $id]),
'preferredUsername' => $profile->getNickname(),
'name' => $profile->getBestName(),
'summary' => ($desc = $profile->getDescription()) == null ? '' : $desc,
'url' => $profile->getUrl(),
'manuallyApprovesFollowers' => false,
'publicKey' => [
'id' => $uri . '#public-key',
'owner' => $uri,
'publicKeyPem' => $public_key,
],
'tag' => [],
'attachment' => [],
'icon' => [
'type' => 'Image',
'mediaType' => 'image/png',
'height' => AVATAR_PROFILE_SIZE,
'width' => AVATAR_PROFILE_SIZE,
'url' => $profile->avatarUrl(AVATAR_PROFILE_SIZE),
],
];
if ($profile->isLocal()) {
$res['endpoints']['sharedInbox'] = common_local_url('apInbox');
} else {
$aprofile = new Activitypub_profile();
$aprofile = $aprofile->from_profile($profile);
$res['endpoints']['sharedInbox'] = $aprofile->sharedInboxuri;
}
return $res;
}
/**
* Insert the current object variables into the database
*
* @throws ServerException
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function do_insert(): void
{
// Does any other protocol have this remote entity we're about to add ?
Event::handle('StartTFNLookup', [$this->uri, get_class($this), &$profile_id]);
if (!is_null($profile_id)) {
// Yes! Avoid creating a new profile
$this->profile_id = $profile_id;
$this->created = $this->modified = common_sql_now();
if ($this->insert() === false) {
$this->query('ROLLBACK');
throw new ServerException('Cannot save ActivityPub profile.');
}
// Update existing profile with received data
$profile = Profile::getKV('id', $profile_id);
self::update_local_profile($profile, $this);
// Ask TFN to handle profile duplication
Event::handle('EndTFNLookup', [get_class($this), $profile_id]);
} else {
// No, create both a new profile and remote profile
$profile = new Profile();
$profile->created = $this->created = $this->modified = common_sql_now();
self::update_local_profile($profile, $this);
$this->profile_id = $profile->insert();
if ($this->profile_id === false) {
$profile->query('ROLLBACK');
throw new ServerException('Profile insertion failed.');
}
$ok = $this->insert();
if ($ok === false) {
$profile->query('ROLLBACK');
$this->query('ROLLBACK');
throw new ServerException('Cannot save ActivityPub profile.');
}
}
}
/**
* Fetch the locally stored profile for this Activitypub_profile
*
* @throws NoProfileException if it was not found
*
* @return Profile
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function local_profile(): Profile
{
$profile = Profile::getKV('id', $this->profile_id);
if (!$profile instanceof Profile) {
throw new NoProfileException($this->profile_id);
}
return $profile;
}
/**
* Generates an Activitypub_profile from a Profile
*
* @param Profile $profile
*
* @throws Exception if no Activitypub_profile exists for given Profile
*
* @return Activitypub_profile
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function from_profile(Profile $profile): Activitypub_profile
{
$profile_id = $profile->getID();
$aprofile = self::getKV('profile_id', $profile_id);
if (!$aprofile instanceof Activitypub_profile) {
// No Activitypub_profile for this profile_id,
if (!$profile->isLocal()) {
// create one!
$aprofile = self::create_from_local_profile($profile);
} else {
throw new Exception('No Activitypub_profile for Profile ID: ' . $profile_id . ', this is a local user.');
}
}
// extend the ap_profile with some information we
// don't store in the database
$fields = [
'nickname' => 'nickname',
'fullname' => 'fullname',
'bio' => 'bio',
];
foreach ($fields as $af => $pf) {
$aprofile->{$af} = $profile->{$pf};
}
return $aprofile;
}
/**
* Travels an array of Profile and returns an array of Activitypub_profile
*
* @param array of Profile $profiles
*
* @return array of Activitypub_profile
*/
public static function from_profile_collection(array $profiles): array
{
$ap_profiles = [];
foreach ($profiles as $profile) {
try {
$ap_profiles[] = self::from_profile($profile);
} catch (Exception $e) {
// Don't mind local profiles
}
}
return $ap_profiles;
}
/**
* Given an existent local profile creates an ActivityPub profile.
* One must be careful not to give a user profile to this function
* as only remote users have ActivityPub_profiles on local instance
*
* @param Profile $profile
*
* @throws HTTP_Request2_Exception
* @throws Exception
* @throws Exception
*
* @return Activitypub_profile
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private static function create_from_local_profile(Profile $profile): Activitypub_profile
{
$aprofile = new Activitypub_profile();
$url = $profile->getUri();
$inboxes = Activitypub_explorer::get_actor_inboxes_uri($url);
if ($inboxes === false) {
throw new Exception('This is not an ActivityPub user thus AProfile is politely refusing to proceed.');
}
$aprofile->created = $aprofile->modified = common_sql_now();
$aprofile = new Activitypub_profile;
$aprofile->profile_id = $profile->getID();
$aprofile->uri = $url;
$aprofile->nickname = $profile->getNickname();
$aprofile->fullname = $profile->getFullname();
$aprofile->bio = substr($profile->getDescription(), 0, 1000);
$aprofile->inboxuri = $inboxes['inbox'];
$aprofile->sharedInboxuri = $inboxes['sharedInbox'];
$aprofile->insert();
return $aprofile;
}
/**
* Returns sharedInbox if possible, inbox otherwise
*
* @return string Inbox URL
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function get_inbox(): string
{
if (is_null($this->sharedInboxuri)) {
return $this->inboxuri;
}
return $this->sharedInboxuri;
}
/**
* Ensures a valid Activitypub_profile when provided with a valid URI.
*
* @param string $url
* @param bool $grab_online whether to try online grabbing, defaults to true
*
* @throws Exception if it isn't possible to return an Activitypub_profile
*
* @return Activitypub_profile
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function fromUri(string $url, bool $grab_online = true): Activitypub_profile
{
try {
return self::from_profile(Activitypub_explorer::get_profile_from_url($url, $grab_online));
} catch (Exception $e) {
throw new Exception('No valid ActivityPub profile found for given URI.');
}
}
/**
* Look up, and if necessary create, an Activitypub_profile for the remote
* entity with the given WebFinger address.
* This should never return null -- you will either get an object or
* an exception will be thrown.
*
* @param string $addr WebFinger address
*
* @throws Exception on error conditions
*
* @return Activitypub_profile
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @author GNU social
*/
public static function ensure_webfinger(string $addr): Activitypub_profile
{
// Normalize $addr, i.e. add 'acct:' if missing
$addr = Discovery::normalize($addr);
// Try the cache
$uri = self::cacheGet(sprintf('activitypub_profile:webfinger:%s', $addr));
if ($uri !== false) {
if (is_null($uri)) {
// Negative cache entry
// TRANS: Exception.
throw new Exception(_m('Not a valid WebFinger address (via cache).'));
}
try {
return self::fromUri($uri);
} catch (Exception $e) {
common_log(LOG_ERR, sprintf(__METHOD__ . ': WebFinger address cache inconsistent with database, did not find Activitypub_profile uri==%s', $uri));
self::cacheSet(sprintf('activitypub_profile:webfinger:%s', $addr), false);
}
}
// Now, try some discovery
$disco = new Discovery();
try {
$xrd = $disco->lookup($addr);
} catch (Exception $e) {
// Save negative cache entry so we don't waste time looking it up again.
// @todo FIXME: Distinguish temporary failures?
self::cacheSet(sprintf('activitypub_profile:webfinger:%s', $addr), null);
// TRANS: Exception.
throw new Exception(_m('Not a valid WebFinger address.'));
}
$hints = array_merge(
['webfinger' => $addr],
DiscoveryHints::fromXRD($xrd)
);
// If there's an Hcard, let's grab its info
if (array_key_exists('hcard', $hints)) {
if (!array_key_exists('profileurl', $hints) || $hints['hcard'] != $hints['profileurl']) {
$hcardHints = DiscoveryHints::fromHcardUrl($hints['hcard']);
$hints = array_merge($hcardHints, $hints);
}
}
// If we got a profile page, try that!
$profileUrl = null;
if (array_key_exists('profileurl', $hints)) {
$profileUrl = $hints['profileurl'];
try {
common_log(LOG_INFO, "Discovery on acct:{$addr} with profile URL {$profileUrl}");
$aprofile = self::fromUri($hints['profileurl']);
self::cacheSet(sprintf('activitypub_profile:webfinger:%s', $addr), $aprofile->getUri());
return $aprofile;
} catch (Exception $e) {
common_log(LOG_WARNING, "Failed creating profile from profile URL '{$profileUrl}': " . $e->getMessage());
// keep looking
//
// @todo FIXME: This means an error discovering from profile page
// may give us a corrupt entry using the webfinger URI, which
// will obscure the correct page-keyed profile later on.
}
}
// XXX: try hcard
// XXX: try FOAF
// TRANS: Exception. %s is a WebFinger address.
throw new Exception(sprintf(_m('Could not find a valid profile for "%s".'), $addr));
}
/**
* Update local profile with info from some AP profile
*
* @param Profile $profile
* @param Activitypub_profile $aprofile
*
* @return void
*
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function update_local_profile(Profile $profile, Activitypub_profile $aprofile): void
{
$fields = [
'profileurl' => 'profileurl',
'nickname' => 'nickname',
'fullname' => 'fullname',
'bio' => 'bio',
];
$orig = clone $profile;
foreach ($fields as $af => $pf) {
$profile->{$pf} = $aprofile->{$af};
}
if ($profile->id) {
common_debug('Updating local Profile:' . $profile->id . ' from remote ActivityPub profile');
$profile->modified = common_sql_now();
$profile->update($orig);
}
}
/**
* Update remote user profile in local instance
*
* @param Activitypub_profile $aprofile
* @param array|false $res remote response, if array it updates, if false it deletes
*
* @throws NoProfileException
*
* @return Profile remote Profile object
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function update_profile(Activitypub_profile $aprofile, $res): Profile
{
if ($res === false) {
$profile = $aprofile->local_profile();
$id = $profile->getID();
$profile->delete();
throw new NoProfileException($id, '410 Gone');
}
if (!is_array($res)) {
throw new InvalidArgumentException('TypeError: Argument 2 passed to Activitypub_profile::update_profile() must be of the type array or bool(false).');
}
// ActivityPub Profile
$aprofile->uri = $res['id'];
$aprofile->nickname = $res['preferredUsername'];
$aprofile->fullname = $res['name'] ?? null;
$aprofile->bio = isset($res['summary']) ? substr(strip_tags($res['summary']), 0, 1000) : null;
$aprofile->inboxuri = $res['inbox'];
$aprofile->sharedInboxuri = $res['endpoints']['sharedInbox'] ?? $res['inbox'];
$aprofile->profileurl = $res['url'] ?? $aprofile->uri;
$aprofile->modified = common_sql_now();
$profile = $aprofile->local_profile();
// Profile
self::update_local_profile($profile, $aprofile);
$aprofile->update();
// Public Key
Activitypub_rsa::update_public_key($profile, $res['publicKey']['publicKeyPem']);
// Avatar
if (isset($res['icon']['url'])) {
try {
Activitypub_explorer::update_avatar($profile, $res['icon']['url']);
} catch (Exception $e) {
// Let the exception go, it isn't a serious issue
common_debug('An error ocurred while grabbing remote avatar' . $e->getMessage());
}
}
return $profile;
}
/**
* Update remote user profile URI in local instance
*
* @param string $uri
*
* @throws Exception (if the update fails)
*
* @return void
*
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
*/
public function updateUri(string $uri): void
{
$orig = clone $this;
$this->uri = $uri;
$this->updateWithKeys($orig);
}
/**
* Getter for the number of subscribers of a
* given local profile
*
* @param Profile $profile profile object
*
* @return int number of subscribers
*
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
*/
public static function subscriberCount(Profile $profile): int
{
$cnt = self::cacheGet(sprintf('activitypub_profile:subscriberCount:%d', $profile->id));
if ($cnt !== false && is_int($cnt)) {
return $cnt;
}
$user_table = common_database_tablename('user');
$sub = new Subscription();
$sub->subscribed = $profile->id;
$sub->_join .= "\n" . <<<END
INNER JOIN (
SELECT id AS subscriber FROM {$user_table}
UNION ALL
SELECT profile_id FROM activitypub_profile
) AS t1 USING (subscriber)
END;
$sub->whereAdd('subscriber <> subscribed');
$cnt = $sub->count('DISTINCT subscriber');
self::cacheSet(sprintf('activitypub_profile:subscriberCount:%d', $profile->id), $cnt);
return $cnt;
}
/**
* Getter for the number of subscriptions of a
* given local profile
*
* @param Profile $profile profile object
*
* @return int number of subscriptions
*
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
*/
public static function subscriptionCount(Profile $profile): int
{
$cnt = self::cacheGet(sprintf('activitypub_profile:subscriptionCount:%d', $profile->id));
if ($cnt !== false && is_int($cnt)) {
return $cnt;
}
$user_table = common_database_tablename('user');
$sub = new Subscription();
$sub->subscriber = $profile->id;
$sub->_join .= "\n" . <<<END
INNER JOIN (
SELECT id AS subscribed FROM {$user_table}
UNION ALL
SELECT profile_id FROM activitypub_profile
) AS t1 USING (subscribed)
END;
$sub->whereAdd('subscriber <> subscribed');
$cnt = $sub->count('DISTINCT subscribed');
self::cacheSet(sprintf('activitypub_profile:subscriptionCount:%d', $profile->id), $cnt);
return $cnt;
}
/**
* Increment or decrement subscriber count
*
* @param Profile $profile
* @param $adder
*
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
*/
public static function updateSubscriberCount(Profile $profile, $adder): void
{
$cnt = self::cacheGet(sprintf('activitypub_profile:subscriberCount:%d', $profile->id));
if ($cnt !== false && is_int($cnt)) {
self::cacheSet(sprintf('activitypub_profile:subscriberCount:%d', $profile->id), $cnt + $adder);
}
}
/**
* Increment or decrement subscription count
*
* @param Profile $profile
* @param $adder
*
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
*/
public static function updateSubscriptionCount(Profile $profile, $adder): void
{
$cnt = self::cacheGet(sprintf('activitypub_profile:subscriptionCount:%d', $profile->id));
if ($cnt !== false && is_int($cnt)) {
self::cacheSet(sprintf('activitypub_profile:subscriptionCount:%d', $profile->id), $cnt + $adder);
}
}
/**
* Getter for the subscriber profiles of a
* given local profile
*
* @param Profile $profile profile object
* @param int $offset [optional] index of the starting row to fetch from
* @param null|int $limit [optional] maximum number of rows allowed for fetching. If it is omitted,
* then the sequence will have everything
* from offset up until the end.
*
* @return array subscriber profile objects
*
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
*/
public static function getSubscribers(Profile $profile, int $offset = 0, ?int $limit = null): array
{
$cache = false;
if ($offset + $limit <= Subscription::CACHE_WINDOW) {
$subs = self::cacheGet(sprintf('activitypub_profile:subscriberCollection:%d', $profile->id));
if ($subs !== false && is_array($subs)) {
return array_slice($subs, $offset, $limit);
}
$cache = true;
}
$subs = Subscription::getSubscriberIDs($profile->id, $offset, $limit);
$profiles = [];
$users = User::multiGet('id', $subs);
foreach ($users->fetchAll() as $user) {
$profiles[$user->id] = $user->getProfile();
}
$ap_profiles = Activitypub_profile::multiGet('profile_id', $subs);
foreach ($ap_profiles->fetchAll() as $ap) {
$profiles[$ap->getID()] = $ap->local_profile();
}
if ($cache) {
self::cacheSet(sprintf('activitypub_profile:subscriberCollection:%d', $profile->id), $profiles);
}
return $profiles;
}
/**
* Getter for the subscribed profiles of a
* given local profile
*
* @param Profile $profile profile object
* @param int $offset index of the starting row to fetch from
* @param null|int $limit maximum number of rows allowed for fetching
*
* @return array subscribed profile objects
*
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
*/
public static function getSubscribed(Profile $profile, int $offset = 0, ?int $limit = null): array
{
$cache = false;
if ($offset + $limit <= Subscription::CACHE_WINDOW) {
$subs = self::cacheGet(sprintf('activitypub_profile:subscribedCollection:%d', $profile->id));
if (is_array($subs)) {
return array_slice($subs, $offset, $limit);
}
$cache = true;
}
$subs = Subscription::getSubscribedIDs($profile->id, $offset, $limit);
$profiles = [];
$users = User::multiGet('id', $subs);
foreach ($users->fetchAll() as $user) {
$profiles[$user->id] = $user->getProfile();
}
$ap_profiles = Activitypub_profile::multiGet('profile_id', $subs);
foreach ($ap_profiles->fetchAll() as $ap) {
$profiles[$ap->getID()] = $ap->local_profile();
}
if ($cache) {
self::cacheSet(sprintf('activitypub_profile:subscribedCollection:%d', $profile->id), $profiles);
}
return $profiles;
}
/**
* Update cached values that are relevant to
* the users involved in a subscription
*
* @param Profile $actor subscriber profile object
* @param Profile $other subscribed profile object
*
* @throws Exception
*
* @return void
*
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
*/
public static function subscribeCacheUpdate(Profile $actor, Profile $other): void
{
self::blow('activitypub_profile:subscribedCollection:%d', $actor->getID());
self::blow('activitypub_profile:subscriberCollection:%d', $other->id);
self::updateSubscriptionCount($actor, +1);
self::updateSubscriberCount($other, +1);
}
/**
* Update cached values that are relevant to
* the users involved in an unsubscription
*
* @param Profile $actor subscriber profile object
* @param Profile $other subscribed profile object
*
* @throws Exception
*
* @return void
*
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
*/
public static function unsubscribeCacheUpdate(Profile $actor, Profile $other): void
{
self::blow('activitypub_profile:subscribedCollection:%d', $actor->getID());
self::blow('activitypub_profile:subscriberCollection:%d', $other->id);
self::updateSubscriptionCount($actor, -1);
self::updateSubscriberCount($other, -1);
}
public static function schemaDef()
{
return [
'name' => 'activitypub_actor',
'description' => 'remote actor profiles',
'fields' => [
'uri' => ['type' => 'text', 'not null' => true],
'profile_id' => ['type' => 'int', 'not null' => true],
'inboxuri' => ['type' => 'text', 'not null' => true],
'sharedInboxuri' => ['type' => 'text'],
'created' => ['type' => 'datetime', 'description' => 'date this record was created'],
'modified' => ['type' => 'timestamp', 'not null' => true, 'description' => 'date this record was modified'],
],
'primary key' => ['profile_id'],
'foreign keys' => [
'activitypub_profile_profile_id_fkey' => ['profile', ['profile_id' => 'id']],
],
];
}
}

249
plugins/ActivityPub/Entity/ActivityPubCryptKey.php
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@ -1,249 +0,0 @@
<?php
// {{{ License
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
// }}}
/**
* ActivityPub Assymetric Key Storage System
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @author Hugo Sales <hugo@hsal.es>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
namespace Plugin\ActivityPub\Entity;
class ActivityPubCryptKey
{
// {{{ Autocode
private int $gsactor_id;
private ?string $private_key;
private string $public_key;
private ?DateTimeInterface $created;
private DateTimeInterface $modified;
public function setGSActorId(int $gsactor_id): self
{
$this->gsactor_id = $gsactor_id;
return $this;
}
public function getGSActorId(): int
{
return $this->gsactor_id;
}
public function setPrivateKey(?string $private_key): self
{
$this->private_key = $private_key;
return $this;
}
public function getPrivateKey(): ?string
{
return $this->private_key;
}
public function setPublicKey(string $public_key): self
{
$this->public_key = $public_key;
return $this;
}
public function getPublicKey(): string
{
return $this->public_key;
}
public function setCreated(?DateTimeInterface $created): self
{
$this->created = $created;
return $this;
}
public function getCreated(): ?DateTimeInterface
{
return $this->created;
}
public function setModified(DateTimeInterface $modified): self
{
$this->modified = $modified;
return $this;
}
public function getModified(): DateTimeInterface
{
return $this->modified;
}
// }}} Autocode
/**
* Private key getter
*
* @param Profile $profile
*
* @throws Exception Throws exception if tries to fetch a private key of an actor we don't own
*
* @return string The private key
*/
public function get_private_key(Profile $profile): string
{
$this->profile_id = $profile->getID();
$apRSA = self::getKV('profile_id', $this->profile_id);
if (!$apRSA instanceof Activitypub_rsa) {
// Nonexistent key pair for this profile
if ($profile->isLocal()) {
self::generate_keys($this->private_key, $this->public_key);
$this->store_keys();
$apRSA->private_key = $this->private_key;
} else {
throw new Exception('This is a remote Profile, there is no Private Key for this Profile.');
}
}
return $apRSA->private_key;
}
/**
* Guarantees a Public Key for a given profile.
*
* @param Profile $profile
* @param bool $fetch=true Should attempt to fetch keys from a remote profile?
*
* @throws ServerException It should never occur, but if so, we break everything!
* @throws Exception
*
* @return string The public key
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function ensure_public_key(Profile $profile, bool $fetch = true): string
{
$this->profile_id = $profile->getID();
$apRSA = self::getKV('profile_id', $this->profile_id);
if (!$apRSA instanceof Activitypub_rsa) {
// No existing key pair for this profile
if ($profile->isLocal()) {
self::generate_keys($this->private_key, $this->public_key);
$this->store_keys();
$apRSA->public_key = $this->public_key;
} else {
// ASSERT: This should never happen, but try to recover!
common_log(LOG_ERR, 'Activitypub_rsa: An impossible thing has happened... Please let the devs know that it entered in line 116 at Activitypub_rsa.php');
if ($fetch) {
$res = Activitypub_explorer::get_remote_user_activity($profile->getUri());
Activitypub_rsa::update_public_key($profile, $res['publicKey']['publicKeyPem']);
return self::ensure_public_key($profile, false);
} else {
throw new ServerException('Activitypub_rsa: Failed to find keys for given profile. That should have not happened!');
}
}
}
return $apRSA->public_key;
}
/**
* Insert the current object variables into the database.
*
* @throws ServerException
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function store_keys(): void
{
$this->created = $this->modified = common_sql_now();
$ok = $this->insert();
if ($ok === false) {
throw new ServerException('Cannot save ActivityPub RSA.');
}
}
/**
* Generates a pair of RSA keys.
*
* @param string $private_key out
* @param string $public_key out
*
* @author PHP Manual Contributed Notes <dirt@awoms.com>
*/
public static function generate_keys(?string &$private_key, ?string &$public_key): void
{
$config = [
'digest_alg' => 'sha512',
'private_key_bits' => 2048,
'private_key_type' => OPENSSL_KEYTYPE_RSA,
];
// Create the private and public key
$res = openssl_pkey_new($config);
// Extract the private key from $res to $private_key
openssl_pkey_export($res, $private_key);
// Extract the public key from $res to $pubKey
$pubKey = openssl_pkey_get_details($res);
$public_key = $pubKey['key'];
unset($pubKey);
}
/**
* Update public key.
*
* @param Activitypub_profile|Profile $profile
* @param string $public_key
*
* @throws Exception
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function update_public_key($profile, string $public_key): void
{
// Public Key
$apRSA = new Activitypub_rsa();
$apRSA->profile_id = $profile->getID();
$apRSA->public_key = $public_key;
$apRSA->created = common_sql_now();
if (!$apRSA->update()) {
$apRSA->insert();
}
}
public static function schemaDef()
{
return [
'name' => 'activitypub_crypt_key',
'description' => 'assymetric key storage for activitypub',
'fields' => [
'gsactor_id' => ['type' => 'int', 'not null' => true],
'private_key' => ['type' => 'text'],
'public_key' => ['type' => 'text', 'not null' => true],
'created' => ['type' => 'datetime', 'description' => 'date this record was created'],
'modified' => ['type' => 'timestamp', 'not null' => true, 'description' => 'date this record was modified'],
],
'primary key' => ['gsactor_id'],
'foreign keys' => [
'activitypub_rsa_gsactor_id_fkey' => ['gsactor', ['gsactor_id' => 'id']],
],
];
}
}

97
plugins/ActivityPub/Entity/ActivityPubFollowRequests.php
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@ -1,97 +0,0 @@
<?php
// {{{ License
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
// }}}
/**
* ActivityPub's Pending follow requests
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @author Hugo Sales <hugo@hsal.es>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
namespace Plugin\ActivityPub\Entity;
class ActivityPubFollowRequests
{
// {{{ Autocode
private int $local_gsactor_id;
private int $remote_gsactor_id;
private int $relation_id;
public function setLocalGSActorId(int $local_gsactor_id): self
{
$this->local_gsactor_id = $local_gsactor_id;
return $this;
}
public function getLocalGSActorId(): int
{
return $this->local_gsactor_id;
}
public function setRemoteGSActorId(int $remote_gsactor_id): self
{
$this->remote_gsactor_id = $remote_gsactor_id;
return $this;
}
public function getRemoteGSActorId(): int
{
return $this->remote_gsactor_id;
}
public function setRelationId(int $relation_id): self
{
$this->relation_id = $relation_id;
return $this;
}
public function getRelationId(): int
{
return $this->relation_id;
}
// }}} Autocode
public static function schemaDef()
{
return [
'name' => 'activitypub_pending_follow_requests',
'fields' => [
'local_gsactor_id' => ['type' => 'int', 'not null' => true],
'remote_gsactor_id' => ['type' => 'int', 'not null' => true],
'relation_id' => ['type' => 'serial', 'not null' => true],
],
'primary key' => ['relation_id'],
'foreign keys' => [
'activitypub_pending_follow_requests_local_gsactor_id_fkey' => ['gsactor', ['local_gsactor_id' => 'id']],
'activitypub_pending_follow_requests_remote_gsactor_id_fkey' => ['gsactor', ['remote_gsactor_id' => 'id']],
],
'indexes' => [
'activitypub_pending_follow_requests_local_gsactor_id_idx' => ['local_gsactor_id'],
'activitypub_pending_follow_requests_remote_gsactor_id_idx' => ['remote_gsactor_id'],
],
];
}
}

47
plugins/ActivityPub/README.md
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@ -1,47 +0,0 @@
# ActivityPub plugin for GNU social
(c) 2018-2019 Free Software Foundation, Inc
This is the README file for GNU social's ActivityPub plugin.
It includes general information about the plugin.
## About
This plugin adds [ActivityPub](https://www.w3.org/TR/activitypub/) support to GNU social.
## Additional functionality
The RemoteFollow plugin is recommended as it increases the UX significatively,
it adds a remote follow button to user profiles.
## Credits
* **[Diogo Cordeiro](https://www.diogo.site/)**
## Special thanks
* **[Daniel Supernault](https://github.com/dansup)**
* **[Mikael Nordfeldth](https://mmn-o.se/)**
## License
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public
License along with this program, in the file "COPYING". If not, see
<http://www.gnu.org/licenses/>.
IMPORTANT NOTE: The GNU Affero General Public License (AGPL) has
*different requirements* from the "regular" GPL. In particular, if
you make modifications to the plugin source code on your server,
you *MUST MAKE AVAILABLE* the modified version of the source code
to your users under the same license. This is a legal requirement
of using the software, and if you do not wish to share your
modifications, *YOU MAY NOT USE THIS PLUGIN*.

140
plugins/ActivityPub/actions/apactorfollowers.php
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<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* Actor's Followers Collection
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class apActorFollowersAction extends ManagedAction
{
protected $needLogin = false;
protected $canPost = true;
/**
* Handle the Followers Collection request
*
* @throws Exception
*
* @return void
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
protected function handle()
{
try {
$profile = Profile::getByID($this->trimmed('id'));
$profile_id = $profile->getID();
} catch (Exception $e) {
ActivityPubReturn::error('Invalid Actor URI.', 404);
}
if (!$profile->isLocal()) {
ActivityPubReturn::error('This is not a local user.', 403);
}
if (!isset($_GET['page'])) {
$page = 0;
} else {
$page = (int) ($this->trimmed('page'));
}
if ($page < 0) {
ActivityPubReturn::error('Invalid page number.');
}
$since = ($page - 1) * PROFILES_PER_MINILIST;
$limit = PROFILES_PER_MINILIST;
// Calculate total items
$total_subs = Activitypub_profile::subscriberCount($profile);
$total_pages = ceil($total_subs / PROFILES_PER_MINILIST);
$res = [
'@context' => [
'https://www.w3.org/ns/activitystreams',
'https://w3id.org/security/v1',
],
'id' => common_local_url('apActorFollowers', ['id' => $profile_id]) . (($page != 0) ? '?page=' . $page : ''),
'type' => ($page == 0 ? 'OrderedCollection' : 'OrderedCollectionPage'),
'totalItems' => $total_subs,
];
if ($page == 0) {
$res['first'] = common_local_url('apActorFollowers', ['id' => $profile_id]) . '?page=1';
} else {
$res['orderedItems'] = $this->generate_followers($profile, $since, $limit);
$res['partOf'] = common_local_url('apActorFollowers', ['id' => $profile_id]);
if ($page + 1 < $total_pages) {
$res['next'] = common_local_url('apActorFollowers', ['id' => $profile_id]) . 'page=' . ($page + 1 == 1 ? 2 : $page + 1);
}
if ($page > 1) {
$res['prev'] = common_local_url('apActorFollowers', ['id' => $profile_id]) . '?page=' . ($page - 1 <= 0 ? 1 : $page - 1);
}
}
ActivityPubReturn::answer($res);
}
/**
* Generates a list of stalkers for a given profile.
*
* @param Profile $profile
* @param int $since
* @param int $limit
*
* @throws Exception
*
* @return array of URIs
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function generate_followers($profile, $since, $limit)
{
$subs = [];
try {
$sub = Activitypub_profile::getSubscribers($profile, $since, $limit);
// Get followers' URLs
foreach ($sub as $s) {
$subs[] = $s->getUri();
}
} catch (NoResultException $e) {
// Just let the exception go on its merry way
}
return $subs;
}
}

140
plugins/ActivityPub/actions/apactorfollowing.php
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@ -1,140 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* Actor's Following Collection
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class apActorFollowingAction extends ManagedAction
{
protected $needLogin = false;
protected $canPost = true;
/**
* Handle the Following Collection request
*
* @throws Exception
*
* @return void
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
protected function handle()
{
try {
$profile = Profile::getByID($this->trimmed('id'));
$profile_id = $profile->getID();
} catch (Exception $e) {
ActivityPubReturn::error('Invalid Actor URI.', 404);
}
if (!$profile->isLocal()) {
ActivityPubReturn::error('This is not a local user.', 403);
}
if (!isset($_GET['page'])) {
$page = 0;
} else {
$page = (int) ($this->trimmed('page'));
}
if ($page < 0) {
ActivityPubReturn::error('Invalid page number.');
}
$since = ($page - 1) * PROFILES_PER_MINILIST;
$limit = PROFILES_PER_MINILIST;
// Calculate total items
$total_subs = Activitypub_profile::subscriptionCount($profile);
$total_pages = ceil($total_subs / PROFILES_PER_MINILIST);
$res = [
'@context' => [
'https://www.w3.org/ns/activitystreams',
'https://w3id.org/security/v1',
],
'id' => common_local_url('apActorFollowing', ['id' => $profile_id]) . (($page != 0) ? '?page=' . $page : ''),
'type' => ($page == 0 ? 'OrderedCollection' : 'OrderedCollectionPage'),
'totalItems' => $total_subs,
];
if ($page == 0) {
$res['first'] = common_local_url('apActorFollowing', ['id' => $profile_id]) . '?page=1';
} else {
$res['orderedItems'] = $this->generate_following($profile, $since, $limit);
$res['partOf'] = common_local_url('apActorFollowing', ['id' => $profile_id]);
if ($page + 1 < $total_pages) {
$res['next'] = common_local_url('apActorFollowing', ['id' => $profile_id]) . 'page=' . ($page + 1 == 1 ? 2 : $page + 1);
}
if ($page > 1) {
$res['prev'] = common_local_url('apActorFollowing', ['id' => $profile_id]) . '?page=' . ($page - 1 <= 0 ? 1 : $page - 1);
}
}
ActivityPubReturn::answer($res);
}
/**
* Generates the list of those a given profile is stalking.
*
* @param Profile $profile
* @param int $since
* @param int $limit
*
* @throws Exception
*
* @return array of URIs
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function generate_following($profile, $since, $limit)
{
$subs = [];
try {
$sub = Activitypub_profile::getSubscribed($profile, $since, $limit);
// Get followed' URLs
foreach ($sub as $s) {
$subs[] = $s->getUri();
}
} catch (NoResultException $e) {
// Just let the exception go on its merry way
}
return $subs;
}
}

162
plugins/ActivityPub/actions/apactorliked.php
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@ -1,162 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* Actor's Liked Collection
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class apActorLikedAction extends ManagedAction
{
protected $needLogin = false;
protected $canPost = true;
/**
* Handle the Liked Collection request
*
* @throws EmptyPkeyValueException
* @throws ServerException
*
* @return void
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
protected function handle()
{
try {
$profile = Profile::getByID($this->trimmed('id'));
$profile_id = $profile->getID();
} catch (Exception $e) {
ActivityPubReturn::error('Invalid Actor URI.', 404);
}
if (!$profile->isLocal()) {
ActivityPubReturn::error('This is not a local user.', 403);
}
$limit = (int) ($this->trimmed('limit'));
$since_id = (int) ($this->trimmed('since_id'));
$max_id = (int) ($this->trimmed('max_id'));
$limit = empty($limit) ? 40 : $limit; // Default is 40
$since_id = empty($since_id) ? null : $since_id;
$max_id = empty($max_id) ? null : $max_id;
// Max is 80
if ($limit > 80) {
$limit = 80;
}
$fave = $this->fetch_faves($profile_id, $limit, $since_id, $max_id);
$faves = [];
while ($fave->fetch()) {
$faves[] = $this->pretty_fave(clone $fave);
}
$res = [
'@context' => [
'https://www.w3.org/ns/activitystreams',
'https://w3id.org/security/v1',
],
'id' => common_local_url('apActorLiked', ['id' => $profile_id]),
'type' => 'OrderedCollection',
'totalItems' => Fave::countByProfile($profile),
'orderedItems' => $faves,
];
ActivityPubReturn::answer($res);
}
/**
* Take a fave object and turns it in a pretty array to be used
* as a plugin answer
*
* @param Fave $fave_object
*
* @throws EmptyPkeyValueException
* @throws ServerException
*
* @return array pretty array representating a Fave
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
protected function pretty_fave($fave_object)
{
$res = [
'created' => $fave_object->created,
'object' => Activitypub_notice::notice_to_array(Notice::getByID($fave_object->notice_id)),
];
return $res;
}
/**
* Fetch faves
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*
* @param int $user_id
* @param int $limit
* @param int $since_id
* @param int $max_id
*
* @return Fave fetchable fave collection
*/
private static function fetch_faves(
$user_id,
$limit = 40,
$since_id = null,
$max_id = null
) {
$fav = new Fave();
$fav->user_id = $user_id;
$fav->orderBy('modified DESC, notice_id DESC');
if ($since_id != null) {
$fav->whereAdd("notice_id > {$since_id}");
}
if ($max_id != null) {
$fav->whereAdd("notice_id < {$max_id}");
}
$fav->limit($limit);
$fav->find();
return $fav;
}
}

140
plugins/ActivityPub/actions/apactoroutbox.php
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@ -1,140 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* Inbox Request Handler
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class apActorOutboxAction extends ManagedAction
{
protected $needLogin = false;
protected $canPost = true;
/**
* Handle the Outbox request
*
* @author Daniel Supernault <danielsupernault@gmail.com>
*/
protected function handle()
{
try {
$profile = Profile::getByID($this->trimmed('id'));
$profile_id = $profile->getID();
} catch (Exception $e) {
ActivityPubReturn::error('Invalid Actor URI.', 404);
}
if (!$profile->isLocal()) {
ActivityPubReturn::error('This is not a local user.', 403);
}
if (!isset($_GET['page'])) {
$page = 0;
} else {
$page = (int) ($this->trimmed('page'));
}
if ($page < 0) {
ActivityPubReturn::error('Invalid page number.');
}
$since = ($page - 1) * PROFILES_PER_MINILIST;
$limit = (($page - 1) == 0 ? 1 : $page) * PROFILES_PER_MINILIST;
// Calculate total items
$total_notes = $profile->noticeCount();
$total_pages = ceil($total_notes / PROFILES_PER_MINILIST);
$res = [
'@context' => [
'https://www.w3.org/ns/activitystreams',
'https://w3id.org/security/v1',
],
'id' => common_local_url('apActorOutbox', ['id' => $profile_id]) . (($page != 0) ? '?page=' . $page : ''),
'type' => ($page == 0 ? 'OrderedCollection' : 'OrderedCollectionPage'),
'totalItems' => $total_notes,
];
if ($page == 0) {
$res['first'] = common_local_url('apActorOutbox', ['id' => $profile_id]) . '?page=1';
} else {
$res['orderedItems'] = $this->generate_outbox($profile);
$res['partOf'] = common_local_url('apActorOutbox', ['id' => $profile_id]);
if ($page + 1 < $total_pages) {
$res['next'] = common_local_url('apActorOutbox', ['id' => $profile_id]) . 'page=' . ($page + 1 == 1 ? 2 : $page + 1);
}
if ($page > 1) {
$res['prev'] = common_local_url('apActorOutbox', ['id' => $profile_id]) . '?page=' . ($page - 1 <= 0 ? 1 : $page - 1);
}
}
ActivityPubReturn::answer($res);
}
/**
* Generates a list of people following given profile.
*
* @param Profile $profile
*
* @throws EmptyPkeyValueException
* @throws InvalidUrlException
* @throws ServerException
*
* @return array of Notices
*
* @author Daniel Supernault <danielsupernault@gmail.com>
*/
public function generate_outbox($profile)
{
// Fetch Notices
$notices = [];
$notice = $profile->getNotices();
while ($notice->fetch()) {
$note = $notice;
// TODO: Handle other types
if ($note->object_type == 'http://activitystrea.ms/schema/1.0/note') {
$notices[] = Activitypub_create::create_to_array(
$note->getProfile()->getUri(),
common_local_url('apNotice', ['id' => $note->getID()]),
Activitypub_notice::notice_to_array($note)
);
}
}
return $notices;
}
}

79
plugins/ActivityPub/actions/apactorprofile.php
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@ -1,79 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* Actor's profile (Local users only)
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class apActorProfileAction extends ManagedAction
{
protected $needLogin = false;
protected $canPost = true;
/**
* Handle the Actor Profile request
*
* @throws InvalidUrlException
* @throws ServerException
*
* @return void
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
protected function handle()
{
if (!empty($id = $this->trimmed('id'))) {
try {
$profile = Profile::getByID($id);
} catch (Exception $e) {
ActivityPubReturn::error('Invalid Actor URI.', 404);
}
unset($id);
} else {
try {
$profile = User::getByNickname($this->trimmed('nickname'))->getProfile();
} catch (Exception $e) {
ActivityPubReturn::error('Invalid username.', 404);
}
}
if (!$profile->isLocal()) {
ActivityPubReturn::error('This is not a local user.', 403);
}
$res = Activitypub_profile::profile_to_array($profile);
ActivityPubReturn::answer($res, 200);
}
}

148
plugins/ActivityPub/actions/apinbox.php
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@ -1,148 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* Inbox Request Handler
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class apInboxAction extends ManagedAction
{
protected $needLogin = false;
protected $canPost = true;
/**
* Handle the Inbox request
*
* @throws ServerException
*
* @return void
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
protected function handle()
{
$path = !empty($this->trimmed('id')) ? common_local_url('apInbox', ['id' => $this->trimmed('id')]) : common_local_url('apInbox');
$path = parse_url($path, PHP_URL_PATH);
if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
ActivityPubReturn::error('Only POST requests allowed.');
}
common_debug('ActivityPub Inbox: Received a POST request.');
$body = $data = file_get_contents('php://input');
common_debug('ActivityPub Inbox: Request contents: ' . $data);
$data = json_decode(file_get_contents('php://input'), true);
if (!isset($data['actor'])) {
ActivityPubReturn::error('Actor not found in the request.');
}
try {
$actor = Activitypub_explorer::get_profile_from_url($data['actor']);
} catch (HTTP_Request2_Exception $e) {
ActivityPubReturn::error('Failed to retrieve remote actor information.');
} catch (NoProfileException $e) {
// Assert: This won't happen.
common_log(LOG_ERR, 'PLEASE REPORT THIS: ActivityPub Inbox Handler failed with NoProfileException while retrieving remote actor information: ' . $e->getMessage());
ActivityPubReturn::error('An unknown error has occurred. This was logged, please alert the sysadmin.');
} catch (ServerException $e) {
ActivityPubReturn::error('Could not store this remote actor.');
} catch (Exception $e) {
ActivityPubReturn::error('Invalid actor.');
}
try {
$aprofile = Activitypub_profile::from_profile($actor);
} catch (Exception $e) {
// Assert: This won't happen.
common_log(LOG_ERR, 'PLEASE REPORT THIS: ActivityPub Inbox Handler failed while retrieving AProfile from Profile: ' . $e->getMessage());
ActivityPubReturn::error('An unknown error has occurred. This was logged, please alert the sysadmin.');
}
$actor_public_key = new Activitypub_rsa();
$actor_public_key = $actor_public_key->ensure_public_key($actor);
common_debug('ActivityPub Inbox: HTTP Signature: Validation will now start!');
$headers = getallheaders();
common_debug('ActivityPub Inbox: Request Headers: ' . print_r($headers, true));
if (!isset($headers['Signature'])) {
common_debug('ActivityPub Inbox: HTTP Signature: Missing Signature header.');
ActivityPubReturn::error('Missing Signature header.', 400);
}
// Extract the signature properties
$signatureData = HTTPSignature::parseSignatureHeader($headers['Signature']);
common_debug('ActivityPub Inbox: HTTP Signature Data: ' . print_r($signatureData, true));
if (isset($signatureData['error'])) {
common_debug('ActivityPub Inbox: HTTP Signature: ' . json_encode($signatureData, true));
ActivityPubReturn::error(json_encode($signatureData, true), 400);
}
list($verified, /*$headers*/) = HTTPSignature::verify($actor_public_key, $signatureData, $headers, $path, $body);
// If the signature fails verification the first time, update profile as it might have changed public key
if ($verified !== 1) {
try {
$res = Activitypub_explorer::get_remote_user_activity($aprofile->getUri());
} catch (Exception $e) {
ActivityPubReturn::error('Invalid remote actor.');
}
try {
$actor = Activitypub_profile::update_profile($aprofile, $res);
} catch (Exception $e) {
ActivityPubReturn::error('Failed to updated remote actor information.');
}
$actor_public_key = new Activitypub_rsa();
$actor_public_key = $actor_public_key->ensure_public_key($actor);
list($verified, /*$headers*/) = HTTPSignature::verify($actor_public_key, $signatureData, $headers, $path, $body);
}
// If it still failed despite profile update
if ($verified !== 1) {
common_debug('ActivityPub Inbox: HTTP Signature: Invalid signature.');
ActivityPubReturn::error('Invalid signature.');
}
// HTTP signature checked out, make sure the "actor" of the activity matches that of the signature
common_debug('ActivityPub Inbox: HTTP Signature: Authorized request. Will now start the inbox handler.');
try {
new Activitypub_inbox_handler($data, $actor);
ActivityPubReturn::answer();
} catch (Exception $e) {
ActivityPubReturn::error($e->getMessage());
}
}
}

186
plugins/ActivityPub/actions/apnotice.php
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@ -1,186 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* Notice (Local notices only)
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class apNoticeAction extends ManagedAction
{
protected $needLogin = false;
protected $canPost = true;
/**
* Notice id
* @var int
*/
public $notice_id;
/**
* Notice object to show
*/
public $notice = null;
/**
* Profile of the notice object
*/
public $profile = null;
/**
* Avatar of the profile of the notice object
*/
public $avatar = null;
/**
* Load attributes based on database arguments
*
* Loads all the DB stuff
*
* @param array $args $_REQUEST array
*
* @return bool success flag
*/
protected function prepare(array $args = []): bool
{
parent::prepare($args);
$this->notice_id = (int)$this->trimmed('id');
try {
$this->notice = $this->getNotice();
} catch (ClientException $e) {
//ActivityPubReturn::error('Activity deleted.', 410);
ActivityPubReturn::answer(Activitypub_tombstone::tombstone_to_array($this->notice_id), 410);
}
$this->target = $this->notice;
if (!$this->notice->inScope($this->scoped)) {
// TRANS: Client exception thrown when trying a view a notice the user has no access to.
throw new ClientException(_m('Access restricted.'), 403);
}
$this->profile = $this->notice->getProfile();
if (!$this->profile instanceof Profile) {
// TRANS: Server error displayed trying to show a notice without a connected profile.
$this->serverError(_m('Notice has no profile.'), 500);
}
try {
$this->avatar = $this->profile->getAvatar(AVATAR_PROFILE_SIZE);
} catch (Exception $e) {
$this->avatar = null;
}
return true;
}
/**
* Is this action read-only?
*
* @return bool true
*/
public function isReadOnly($args): bool
{
return true;
}
/**
* Last-modified date for page
*
* When was the content of this page last modified? Based on notice,
* profile, avatar.
*
* @return int last-modified date as unix timestamp
*/
public function lastModified(): int
{
return max(strtotime($this->notice->modified),
strtotime($this->profile->modified),
($this->avatar) ? strtotime($this->avatar->modified) : 0);
}
/**
* Handle the Notice request
*
* @throws EmptyPkeyValueException
* @throws InvalidUrlException
* @throws ServerException
*
* @return void
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
protected function handle(): void
{
if (is_null($this->notice)) {
ActivityPubReturn::error('Invalid Activity URI.', 404);
}
if (!$notice->isLocal()) {
ActivityPubReturn::error('This is not a local notice.', 403);
}
$res = Activitypub_notice::notice_to_array($this->notice);
ActivityPubReturn::answer($res);
}
/**
* Fetch the notice to show. This may be overridden by child classes to
* customize what we fetch without duplicating all of the prepare() method.
*
* @return null|Notice null if not found
* @throws ClientException If GONE
*/
protected function getNotice(): ?Notice
{
$notice = null;
try {
$notice = Notice::getByID($this->notice_id);
// Alright, got it!
return $notice;
} catch (NoResultException $e) {
// Hm, not found.
$deleted = null;
Event::handle('IsNoticeDeleted', [$this->notice_id, &$deleted]);
if ($deleted === true) {
// TRANS: Client error displayed trying to show a deleted notice.
throw new ClientException(_m('Notice deleted.'), 410);
}
}
// No such notice.
return null;
}
}

24
plugins/ActivityPub/doc/index.html
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@ -1,24 +0,0 @@
<!DOCTYPE html>
<html lang="en">
<head>
<title>ActivityPub plugin for GNU Social API Documentation</title>
<!-- needed for adaptive design -->
<meta charset="utf-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="https://fonts.googleapis.com/css?family=Montserrat:300,400,700|Roboto:300,400,700" rel="stylesheet">
<link rel="icon" href="https://git.gnu.io/gnu/gnu-social/raw/b286e8798b7f89cd72ef19dc335624100f43ce94/theme/neo-gnu/favicon.ico">
<!--
ReDoc doesn't change outer page styles
-->
<style>
body {
margin: 0;
padding: 0;
}
</style>
</head>
<body>
<redoc spec-url='openapi.json'></redoc>
<script src="https://cdn.jsdelivr.net/npm/redoc@next/bundles/redoc.standalone.js"> </script>
</body>
</html>

101
plugins/ActivityPub/doc/objects_and_activities.md
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@ -1,101 +0,0 @@
ActivityPub Plugin for GNU Social Doc
=====================================
## Contents
- [Objects](#entities)
- [Attachment](#attachment)
- [Error](#error)
- [Image](#image)
- [Notice](#notice)
- [Profile](#profile)
- [Tag](#tag)
- [Activities](#activities)
- [Create](#create)
- [Announce](#announce)
- [Delete](#delete)
- [Undo](#undo)
- [Accept](#accept)
- [Reject](#reject)
- [Like](#like)
- [Follow](#follow)
## Objects
### Attachment
| Attribute | Description | Nullable | Type |
| ------------------------ | ----------------------------------------------- | -------- | ------- |
| `id` | ID of the attachment | no | int32 |
| `mimetype` | Mimetype | no | string |
| `url` | URL of the locally hosted version of the image | no | string |
| `meta` | See **attachment metadata** below | yes | Array |
| `title` | Attachment title | no | string |
**Attachment metadata:**
Images may contain `width`, `height`, `size`.
### Error
The most important part of an error response is the HTTP status code. Standard semantics are followed. The body of an error is a JSON object with this structure:
| Attribute | Description | Nullable | Type |
| ------------------------ | ----------------------------------- | -------- | ------- |
| `error` | A textual description of the error | no | string |
### Image
| Attribute | Description | Nullable | Type |
| ------------------------ | --------------- | -------- | ------- |
| `type` | "Image" | no | string |
| `width` | Image's width | no | int32 |
| `height` | Image's height | no | int32 |
| `url` | Image URL | no | string |
### Notice
| Attribute | Description | Nullable | Type |
| ------------------------ | ------------------------------------------------- | -------- | ------------------------------------ |
| `id` | Notice's URL | no | string |
| `type` | Notice's Type | no | string |
| `actor` | URL of Notice owner profile page (can be remote) | no | string |
| `published` | DateTime of notice creation | no | datetime |
| `to` | To | no | string |
| `cc` | CC | no | string |
| `content` | Notice's Content in plain text | no | string |
| `url` | Notice's URL | no | string |
| `reply_to` | ID of the notice this replies | yes | int32 |
| `is_local` | Boolean, true if local, false otherwise | no | bool |
| `conversation` | Notice conversation id | no | int32 |
| `attachment` | Array of [Attachments](#attachment) | no | Array of [Attachments](#attachment) |
| `tag` | Array of [Tags](#tag) | no | Array of [Tags](#tag) |
### Profile
| Attribute | Description | Nullable | Type |
| ------------------------ | ------------------------------------------------ | -------- | ---------------- |
| `@context` | Standard compliance | no | string |
| `id` | Actor's id | no | int32 |
| `type` | "Person" | no | string |
| `nickname` | Actor's nickname | no | string |
| `is_local` | True if local, false otherwise | no | bool |
| `inbox` | URL to Actor's inbox endpoint | no | string |
| `outbox` | URL to Actor's outbox endpoint | no | string |
| `display_name` | The Actor's display name | no | string |
| `followers` | URL to Actor's followers endpoint | no | string |
| `followers_count` | Total number of followers | no | int32 |
| `following` | URL to Actor's following endpoint | no | string |
| `following_count` | Total number of following | no | int32 |
| `liked` | URL to Actor's Liked collection endpoint | no | string |
| `liked_count` | Total number of favorites | no | int32 |
| `summary` | Actor's biography | no | string |
| `url` | URL of the Actor's profile page (can be remote) | no | string |
| `avatar` | Actor's avatar | no | [Image](#image) |
### Tag
| Attribute | Description | Nullable | Type |
| ------------------------ | -------------------------------------------- | -------- | ---------- |
| `name` | The hashtag, not including the preceding `#` | no | string |
| `url` | The URL of the hashtag | no | string |

673
plugins/ActivityPub/doc/openapi.json
View File

@ -1,673 +0,0 @@
{
"openapi": "3.0.0",
"info": {
"description": "## Retrieving objects\nThe HTTP GET method may be dereferenced against an object's `id` property to retrieve the activity.\nThe plugin supports HTTP content negotiation as defined in [RFC7231](https://tools.ietf.org/html/rfc7231) in every endpoint suffixed with .json .\nThe plugin always presents ActivityStreams object representation in response to every request.\nThe client MUST specify an `Accept` header with the `application/ld+json; profile=\"https://www.w3.org/ns/activitystreams\"` media type in order to retrieve the activity.\n\n## Selecting ranges\n\nFor most `GET` operations that return arrays, the query parameters `max_id` and `since_id` can be used to specify the range of IDs to return.\nAPI methods that return collections of items can return a `Link` header containing URLs for the `next` and `prev` pages.\nSee the [Link header RFC](https://tools.ietf.org/html/rfc5988) for more information.\n\n## Pretty output\n\nFor most operations if the `pretty` parameter is set a formated output will be generated (useful for learning about the API or debuging purposes).\n\n## Errors\n\nIf the request you make doesn't go through, the plugin will usually respond with an [Error](#error).\n\n___\n\n> **Note:** Some attributes in the payload can have ``null`` value and are marked as _nullable_ on the tables below. Attributes that are not nullable are guaranteed to return a valid value.",
"version": "1.0.0",
"title": "ActivityPub plugin for GNU Social",
"contact": {
"email": "diogo@fc.up.pt"
},
"license": {
"name": "AGPLv3",
"url": "https://git.gnu.io/gnu/GS-ActivityPub-plugin/blob/COPYING"
}
},
"externalDocs": {
"description": "For a complete definition of the objects and activities available click here.",
"url": "https://git.gnu.io/gnu/GS-ActivityPub-plugin/doc/objects_and_activities.md"
},
"paths": {
"/{nickname}": {
"get": {
"summary": "Fetching an Actor's profile",
"description": "Returns a Profile.",
"responses": {
"200": {
"description": "Returns a Profile",
"content": {
"application/json": {
"schema": {
"type": "array",
"items": {
"$ref": "#/components/schemas/Profile"
}
}
}
}
}
},
"parameters": [
{
"name": "Content-Type",
"in": "header",
"required": true,
"schema": {
"type": "string",
"default": "application/json"
}
},
{
"name": "Accept",
"in": "header",
"required": true,
"schema": {
"type": "string",
"default": "application/activity+json"
}
}
]
}
},
"/{nickname}/inbox.json": {
"post": {
"summary": "Actor Inbox endpoint",
"description": "Allows the publish of activities with attention to a given Actor",
"parameters": [
{
"name": "Content-Type",
"in": "header",
"required": true,
"schema": {
"type": "string",
"default": "application/json"
}
},
{
"name": "Accept",
"in": "header",
"required": true,
"schema": {
"type": "string",
"default": "application/activity+json"
}
}
],
"responses": {
"200": {
"description": "Returns the same activity it received"
}
}
}
},
"/{nickname}/liked.json": {
"get": {
"summary": "Liked Collection",
"description": "Getting an Actor's Liked Collection",
"parameters": [
{
"name": "Content-Type",
"in": "header",
"required": true,
"schema": {
"type": "string",
"default": "application/json"
}
},
{
"name": "Accept",
"in": "header",
"required": true,
"schema": {
"type": "string",
"default": "application/activity+json"
}
},
{
"name": "max_id",
"in": "query",
"required": false,
"schema": {
"type": "integer",
"format": "int32"
},
"description": "Get a list of likes with ID less than this value",
"format": "int32"
},
{
"name": "since_id",
"in": "query",
"required": false,
"schema": {
"type": "integer",
"format": "int32"
},
"description": "Get a list of likes with ID greater than this value"
},
{
"name": "limit",
"in": "query",
"required": false,
"schema": {
"type": "integer",
"format": "int32",
"default": "40"
},
"description": "Maximum number of likes to get (Max 80)"
}
],
"responses": {
"200": {
"description": "Returns Actor's Liked Collection",
"content": {
"application/json": {
"schema": {
"type": "array",
"items": {
"$ref": "#/components/schemas/Liked Collection"
}
}
}
}
}
}
}
},
"/{nickname}/followers.json": {
"get": {
"summary": "Followers Collection",
"description": "Getting an Actor's Followers Collection",
"parameters": [
{
"name": "Content-Type",
"in": "header",
"required": true,
"schema": {
"type": "string",
"default": "application/json"
}
},
{
"name": "Accept",
"in": "header",
"required": true,
"schema": {
"type": "string",
"default": "application/activity+json"
}
},
{
"name": "page",
"in": "query",
"required": false,
"schema": {
"type": "integer",
"format": "int32",
"default": "1"
},
"description": "Page index (starts in 1)"
}
],
"responses": {
"200": {
"description": "Returns Actor's Followers Collection",
"content": {
"application/json": {
"schema": {
"type": "array",
"items": {
"$ref": "#/components/schemas/Follow Collection"
}
}
}
}
}
}
}
},
"/{nickname}/following.json": {
"get": {
"summary": "Following Collection",
"description": "Getting an Actor's Following Collection",
"parameters": [
{
"name": "Content-Type",
"in": "header",
"required": true,
"schema": {
"type": "string",
"default": "application/json"
}
},
{
"name": "Accept",
"in": "header",
"required": true,
"schema": {
"type": "string",
"default": "application/activity+json"
}
},
{
"name": "page",
"in": "query",
"required": false,
"schema": {
"type": "integer",
"format": "int32",
"default": "1"
},
"description": "Page index (starts in 1)"
}
],
"responses": {
"200": {
"description": "Returns Actor's Following Collection",
"content": {
"application/json": {
"schema": {
"type": "array",
"items": {
"$ref": "#/components/schemas/Follow Collection"
}
}
}
}
}
}
}
},
"/inbox.json": {
"post": {
"summary": "SharedInbox endpoint",
"description": "Allows the publish of activities",
"parameters": [
{
"name": "Content-Type",
"in": "header",
"required": true,
"schema": {
"type": "string",
"default": "application/json"
}
},
{
"name": "Accept",
"in": "header",
"required": true,
"schema": {
"type": "string",
"default": "application/activity+json"
}
}
],
"responses": {
"200": {
"description": "Returns the same activity it received"
}
}
}
}
},
"components": {
"schemas": {
"Note": {
"type": "object",
"required": [
"@context",
"id",
"type",
"actor",
"published",
"to",
"cc",
"content",
"url",
"reply_to",
"is_local",
"conversation",
"attachment",
"tag"
],
"properties": {
"@context": {
"type": "string",
"value": "https://www.w3.org/ns/activitystreams",
"default": "https://www.w3.org/ns/activitystreams"
},
"id": {
"description": "Notice's URI",
"type": "string"
},
"type": {
"description": "Notice's Type",
"type": "string"
},
"actor": {
"description": "URL of Notice owner profile page (can be remote)",
"type": "string"
},
"published": {
"description": "DateTime of notice creation",
"type": "string",
"format": "date-time"
},
"to": {
"description": "To",
"type": "string"
},
"cc": {
"description": "CC",
"type": "string"
},
"content": {
"description": "Notice's Content in plain text",
"type": "string"
},
"url": {
"description": "Notice's URL",
"type": "string"
},
"reply_to": {
"description": "ID of the notice this replies",
"type": "string"
},
"is_local": {
"description": "true if local, false otherwise",
"type": "string"
},
"conversation": {
"description": "Notice conversation id",
"type": "integer",
"format": "int32"
},
"attachment": {
"description": "Array of Attachments",
"type": "Array of Attachments"
},
"tag": {
"description": "Array of Tags",
"type": "Array of Tags"
}
},
"xml": {
"name": "Note"
}
},
"Image": {
"type": "object",
"required": [
"@context",
"type",
"width",
"height",
"url"
],
"properties": {
"@context": {
"type": "string",
"value": "https://www.w3.org/ns/activitystreams",
"default": "https://www.w3.org/ns/activitystreams"
},
"type": {
"description": "Image",
"type": "string"
},
"width": {
"description": "Image's width",
"type": "integer",
"format": "int32"
},
"height": {
"description": "Image's height",
"type": "integer",
"format": "int32"
},
"url": {
"description": "Image URL",
"type": "string"
}
},
"xml": {
"name": "Image"
}
},
"Attachment": {
"type": "object",
"required": [
"@context",
"id",
"mimetype",
"url",
"title"
],
"properties": {
"@context": {
"type": "string",
"value": "https://www.w3.org/ns/activitystreams",
"default": "https://www.w3.org/ns/activitystreams"
},
"id": {
"type": "integer",
"format": "int32",
"description": "Id of the Attachment"
},
"mimetype": {
"type": "string",
"description": "Mimetype"
},
"url": {
"type": "string",
"description": "URL of locally hosted version of the attachment"
},
"meta": {
"type": "array",
"description": "Attachment metadata:\n\nImages may contain *width*, *height*, *size*.",
"items": {}
},
"title": {
"type": "string",
"description": "Attachment title"
}
},
"xml": {
"name": "Attachment"
}
},
"Profile": {
"type": "object",
"required": [
"@context",
"id",
"nickname",
"is_local",
"inbox",
"outbox",
"display_name",
"followers",
"followers_count",
"following",
"following_count",
"liked",
"liked_count",
"summary",
"url",
"avatar"
],
"properties": {
"@context": {
"type": "string",
"value": "https://www.w3.org/ns/activitystreams",
"default": "https://www.w3.org/ns/activitystreams"
},
"id": {
"type": "string",
"description": "Local URI"
},
"type": "Person",
"nickname": {
"type": "string",
"description": "Actor's nickname"
},
"is_local": {
"type": "boolean",
"description": "True if local, false otherwise"
},
"inbox": {
"type": "string",
"description": "URL to Actor's inbox endpoint"
},
"sharedInbox": {
"type": "string",
"description": "URL to Actor's sharedInbox endpoint"
},
"outbox": {
"type": "string",
"description": "URL to Actor's outbox endpoint"
},
"display_name": {
"type": "string",
"description": "The Actor's display name"
},
"followers": {
"type": "string",
"description": "URL to Actor's followers collection"
},
"followers_count": {
"type": "integer",
"format": "int32",
"description": "Total number of followers"
},
"following": {
"type": "string",
"description": "URL to Actor's following collection"
},
"following_count": {
"type": "integer",
"format": "int32",
"description": "Total number of following"
},
"liked": {
"type": "string",
"description": "URL to Actor's Liked collection"
},
"liked_count": {
"type": "integer",
"format": "int32",
"description": "Total number of favorites"
},
"summary": {
"type": "string",
"description": "Actor's biography"
},
"url": {
"type": "string",
"description": "URL of the Actor's profile page (can be remote)"
},
"avatar": {
"type": "Image",
"description": "Actor's avatar"
}
},
"xml": {
"name": "Profile"
}
},
"Tag": {
"type": "object",
"required": [
"@context",
"name",
"url"
],
"properties": {
"@context": {
"type": "string",
"value": "https://www.w3.org/ns/activitystreams",
"default": "https://www.w3.org/ns/activitystreams"
},
"name": {
"type": "string",
"description": "The hashtag, not including the preceding #"
},
"url": {
"type": "string",
"description": "The URL of the hashtag"
}
},
"xml": {
"name": "Tag"
}
},
"Liked Collection": {
"type": "object",
"required": [
"@context",
"id",
"type",
"totalItems",
"orderedItems"
],
"properties": {
"@context": {
"type": "string",
"value": "https://www.w3.org/ns/activitystreams",
"default": "https://www.w3.org/ns/activitystreams"
},
"id": {
"type": "string",
"description": "URL for current endpoint"
},
"type": {
"type": "string",
"description": "OrderedCollection"
},
"totalItems": {
"type": "integer",
"format": "int32",
"description": "Total number of favorites"
},
"orderedItems": {
"type": "Array of Notices",
"description": "Array of Notices"
}
}
},
"Follow Collection": {
"type": "object",
"required": [
"@context",
"id",
"type",
"totalItems",
"orderedItems"
],
"properties": {
"@context": {
"type": "string",
"value": "https://www.w3.org/ns/activitystreams",
"default": "https://www.w3.org/ns/activitystreams"
},
"id": {
"type": "string",
"description": "URL for current endpoint"
},
"type": {
"type": "string",
"description": "OrderedCollection"
},
"totalItems": {
"type": "integer",
"format": "int32",
"description": "Total number of items"
},
"prev": {
"type": "string",
"description": "Previous page URL"
},
"next": {
"type": "string",
"description": "Next page URL"
},
"orderedItems": {
"type": "Array of string",
"description": "The URL of each profile"
}
}
}
},
"links": {},
"callbacks": {}
},
"security": [],
"servers": []
}

100
plugins/ActivityPub/lib/Activitypub_activityverb2.php
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@ -1,100 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* Utility class to hold a bunch of constant defining default verb types
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class Activitypub_activityverb2 extends Managed_DataObject
{
const FULL_LIST = [
'Accept' => 'https://www.w3.org/ns/activitystreams#Accept',
'TentativeAccept' => 'https://www.w3.org/ns/activitystreams#TentativeAccept',
'Add' => 'https://www.w3.org/ns/activitystreams#Add',
'Arrive' => 'https://www.w3.org/ns/activitystreams#Arrive',
'Create' => 'https://www.w3.org/ns/activitystreams#Create',
'Delete' => 'https://www.w3.org/ns/activitystreams#Delete',
'Follow' => 'https://www.w3.org/ns/activitystreams#Follow',
'Ignore' => 'https://www.w3.org/ns/activitystreams#Ignore',
'Join' => 'https://www.w3.org/ns/activitystreams#Join',
'Leave' => 'https://www.w3.org/ns/activitystreams#Leave',
'Like' => 'https://www.w3.org/ns/activitystreams#Like',
'Offer' => 'https://www.w3.org/ns/activitystreams#Offer',
'Invite' => 'https://www.w3.org/ns/activitystreams#Invite',
'Reject' => 'https://www.w3.org/ns/activitystreams#Reject',
'TentativeReject' => 'https://www.w3.org/ns/activitystreams#TentativeReject',
'Remove' => 'https://www.w3.org/ns/activitystreams#Remove',
'Undo' => 'https://www.w3.org/ns/activitystreams#Undo',
'Update' => 'https://www.w3.org/ns/activitystreams#Update',
'View' => 'https://www.w3.org/ns/activitystreams#View',
'Listen' => 'https://www.w3.org/ns/activitystreams#Listen',
'Read' => 'https://www.w3.org/ns/activitystreams#Read',
'Move' => 'https://www.w3.org/ns/activitystreams#Move',
'Travel' => 'https://www.w3.org/ns/activitystreams#Travel',
'Announce' => 'https://www.w3.org/ns/activitystreams#Announce',
'Block' => 'https://www.w3.org/ns/activitystreams#Block',
'Flag' => 'https://www.w3.org/ns/activitystreams#Flag',
'Dislike' => 'https://www.w3.org/ns/activitystreams#Dislike',
'Question' => 'https://www.w3.org/ns/activitystreams#Question',
];
const KNOWN = [
'Accept',
'Create',
'Delete',
'Follow',
'Like',
'Undo',
'Announce',
];
/**
* Converts canonical into verb.
*
* @author GNU social
*
* @param string $verb
*
* @return string
*/
public static function canonical($verb)
{
$ns = 'https://www.w3.org/ns/activitystreams#';
if (substr($verb, 0, mb_strlen($ns)) == $ns) {
return substr($verb, mb_strlen($ns));
} else {
return $verb;
}
}
}

158
plugins/ActivityPub/lib/activitypubfailedqueuehandler.php
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@ -1,158 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub queue handler for notice distribution
*
* @package GNUsocial
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2020 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
defined('GNUSOCIAL') || die();
/**
* @copyright 2020 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class ActivityPubFailedQueueHandler extends QueueHandler
{
/**
* Getter of the queue transport name.
*
* @return string transport name
*/
public function transport(): string
{
return 'activitypub_failed';
}
/**
* Notice distribution handler.
*
* @param array $to_failed [string to, Notice].
* @return bool true on success, false otherwise
* @throws HTTP_Request2_Exception
* @throws InvalidUrlException
* @throws ServerException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function handle($to_failed): bool
{
[$other, $notice] = $to_failed;
if (!($notice instanceof Notice)) {
common_log(LOG_ERR, 'Got a bogus notice, not distributing');
return true;
}
$profile = $notice->getProfile();
if (!$profile->isLocal()) {
return true;
}
if ($notice->source == 'activity') {
common_log(LOG_ERR, "Ignoring distribution of notice:{$notice->id}: activity source");
return true;
}
try {
// Handling a Create?
if (ActivityUtils::compareVerbs($notice->verb, [ActivityVerb::POST, ActivityVerb::SHARE])) {
return $this->handle_create($profile, $notice, $other);
}
// Handling a Like?
if (ActivityUtils::compareVerbs($notice->verb, [ActivityVerb::FAVORITE])) {
return $this->onEndFavorNotice($profile, $notice, $other);
}
// Handling a Delete Note?
if (ActivityUtils::compareVerbs($notice->verb, [ActivityVerb::DELETE])) {
return $this->onStartDeleteOwnNotice($profile, $notice, $other);
}
} catch (Exception $e) {
// Postman already re-enqueues for us
common_debug('ActivityPub Failed Queue Handler:'.$e->getMessage());
}
return true;
}
private function handle_create($profile, $notice, $other)
{
// Handling an Announce?
if ($notice->isRepeat()) {
$repeated_notice = Notice::getKV('id', $notice->repeat_of);
if ($repeated_notice instanceof Notice) {
// That was it
$postman = new Activitypub_postman($profile, $other);
$postman->announce($notice, $repeated_notice);
}
// either made the announce or found nothing to repeat
return true;
}
// That was it
$postman = new Activitypub_postman($profile, $other);
$postman->create_note($notice);
return true;
}
/**
* Notify remote users when their notices get favourited.
*
* @param Profile $profile of local user doing the faving
* @param Notice $notice_liked Notice being favored
* @return bool return value
* @throws HTTP_Request2_Exception
* @throws InvalidUrlException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function onEndFavorNotice(Profile $profile, Notice $notice, $other)
{
$postman = new Activitypub_postman($profile, $other);
$postman->like($notice);
return true;
}
/**
* Notify remote users when their notices get deleted
*
* @param $user
* @param $notice
* @return bool hook flag
* @throws HTTP_Request2_Exception
* @throws InvalidUrlException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function onStartDeleteOwnNotice($profile, $notice, $other)
{
// Handle delete locally either because:
// 1. There's no undo-share logic yet
// 2. The deleting user has privileges to do so (locally)
if ($notice->isRepeat() || ($notice->getProfile()->getID() != $profile->getID())) {
return true;
}
$postman = new Activitypub_postman($profile, $other);
$postman->delete_note($notice);
return true;
}
}

320
plugins/ActivityPub/lib/activitypubqueuehandler.php
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@ -1,320 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub queue handler for notice distribution
*
* @package GNUsocial
*
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2019-2020 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
defined('GNUSOCIAL') || die();
/**
* @copyright 2019-2020 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class activitypubqueuehandler extends QueueHandler
{
/**
* Getter of the queue transport name.
*
* @return string transport name
*/
public function transport(): string
{
return 'activitypub';
}
/**
* Notice distribution handler.
*
* @param Notice $notice notice to be distributed.
*
* @throws HTTP_Request2_Exception
* @throws InvalidUrlException
* @throws ServerException
*
* @return bool true on success, false otherwise
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function handle($notice): bool
{
if (!($notice instanceof Notice)) {
common_log(LOG_ERR, 'Got a bogus notice, not distributing');
return true;
}
$profile = $notice->getProfile();
if (!$profile->isLocal()) {
return true;
}
if ($notice->source == 'activity') {
common_log(LOG_ERR, "Ignoring distribution of notice:{$notice->id}: activity source");
return true;
}
$other = Activitypub_profile::from_profile_collection(
$notice->getAttentionProfiles()
);
try {
// Handling a Create?
if (ActivityUtils::compareVerbs($notice->verb, [ActivityVerb::POST, ActivityVerb::SHARE])) {
return $this->handle_create($profile, $notice, $other);
}
// Handling a Like?
if (ActivityUtils::compareVerbs($notice->verb, [ActivityVerb::FAVORITE])) {
return $this->onEndFavorNotice($profile, $notice, $other);
}
// Handling a Delete Note?
if (ActivityUtils::compareVerbs($notice->verb, [ActivityVerb::DELETE])) {
return $this->onStartDeleteOwnNotice($profile, $notice, $other);
}
} catch (Exception $e) {
// Postman handles issues with the failed queue
common_debug('ActivityPub Queue Handler:'.$e->getMessage());
}
return true;
}
/**
* Handle notice creation and propagation
*
* @param mixed $profile
* @param mixed $notice
* @param mixed $other
*/
private function handle_create($profile, $notice, $other)
{
// Handling a reply?
if ($notice->reply_to) {
try {
$parent_notice = $notice->getParent();
try {
$other[] = Activitypub_profile::from_profile($parent_notice->getProfile());
} catch (Exception $e) {
// Local user can be ignored
}
foreach ($parent_notice->getAttentionProfiles() as $mention) {
try {
$other[] = Activitypub_profile::from_profile($mention);
} catch (Exception $e) {
// Local user can be ignored
}
}
} catch (NoParentNoticeException $e) {
// This is not a reply to something (has no parent)
} catch (NoResultException $e) {
// Parent author's profile not found! Complain louder?
common_log(
LOG_ERR,
"Parent notice's author not found: " . $e->getMessage()
);
}
}
// Handling an Announce?
if ($notice->isRepeat()) {
$repeated_notice = Notice::getKV('id', $notice->repeat_of);
if ($repeated_notice instanceof Notice) {
$other = array_merge(
$other,
Activitypub_profile::from_profile_collection(
$repeated_notice->getAttentionProfiles()
)
);
try {
$other[] = Activitypub_profile::from_profile(
$repeated_notice->getProfile()
);
} catch (Exception $e) {
// Local user can be ignored
}
// That was it
$postman = new Activitypub_postman($profile, $other);
$postman->announce($notice, $repeated_notice);
}
// either made the announce or found nothing to repeat
return true;
}
// That was it
$postman = new Activitypub_postman($profile, $other);
$postman->create_note($notice);
return true;
}
/**
* Notify remote users when their notices get favourited.
*
* @param Profile $profile of local user doing the faving
* @param Notice $notice Notice being favored
* @param mixed $other
*
* @throws HTTP_Request2_Exception
* @throws InvalidUrlException
*
* @return bool return value
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function onEndFavorNotice(Profile $profile, Notice $notice, $other)
{
$notice_liked = $notice->getParent();
if ($notice_liked->reply_to) {
try {
$parent_notice = $notice_liked->getParent();
try {
$other[] = Activitypub_profile::from_profile($parent_notice->getProfile());
} catch (Exception $e) {
// Local user can be ignored
}
$other = array_merge(
$other,
Activitypub_profile::from_profile_collection(
$parent_notice->getAttentionProfiles()
)
);
} catch (NoParentNoticeException $e) {
// This is not a reply to something (has no parent)
} catch (NoResultException $e) {
// Parent author's profile not found! Complain louder?
common_log(LOG_ERR, "Parent notice's author not found: " . $e->getMessage());
}
}
$postman = new Activitypub_postman($profile, $other);
$postman->like($notice);
return true;
}
/**
* Notify remote users when their notices get de-favourited.
*
* @param Profile $profile of local user doing the de-faving
* @param Notice $notice Notice being favored
* @param mixed $other
*
* @throws HTTP_Request2_Exception
* @throws InvalidUrlException
*
* @return bool return value
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function onEndDisfavorNotice(Profile $profile, Notice $notice, $other)
{
if ($notice->reply_to) {
try {
$parent_notice = $notice->getParent();
try {
$other[] = Activitypub_profile::from_profile($parent_notice->getProfile());
} catch (Exception $e) {
// Local user can be ignored
}
$other = array_merge(
$other,
Activitypub_profile::from_profile_collection(
$parent_notice->getAttentionProfiles()
)
);
} catch (NoParentNoticeException $e) {
// This is not a reply to something (has no parent)
} catch (NoResultException $e) {
// Parent author's profile not found! Complain louder?
common_log(LOG_ERR, "Parent notice's author not found: " . $e->getMessage());
}
}
$postman = new Activitypub_postman($profile, $other);
$postman->undo_like($notice);
return true;
}
/**
* Notify remote users when their notices get deleted
*
* @param $user
* @param $notice
* @param mixed $profile
* @param mixed $other
*
* @throws HTTP_Request2_Exception
* @throws InvalidUrlException
*
* @return bool hook flag
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function onStartDeleteOwnNotice($profile, $notice, $other)
{
// Handle delete locally either because:
// 1. There's no undo-share logic yet
// 2. The deleting user has privileges to do so (locally)
if ($notice->isRepeat() || ($notice->getProfile()->getID() != $profile->getID())) {
return true;
}
if ($notice->reply_to) {
try {
$parent_notice = $notice->getParent();
try {
$other[] = Activitypub_profile::from_profile($parent_notice->getProfile());
} catch (Exception $e) {
// Local user can be ignored
}
$other = array_merge(
$other,
Activitypub_profile::from_profile_collection(
$parent_notice->getAttentionProfiles()
)
);
} catch (NoParentNoticeException $e) {
// This is not a reply to something (has no parent)
} catch (NoResultException $e) {
// Parent author's profile not found! Complain louder?
common_log(LOG_ERR, "Parent notice's author not found: " . $e->getMessage());
}
}
$postman = new Activitypub_postman($profile, $other);
$postman->delete_note($notice);
return true;
}
}

175
plugins/ActivityPub/lib/discoveryhints.php
View File

@ -1,175 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Evan Prodromou
* @author Brion Vibber
* @author James Walker
* @author Siebrand Mazeland
* @author Mikael Nordfeldth
* @author Diogo Cordeiro
* @copyright 2010-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
class discoveryhints
{
/**
* Find discovery hints in XML XRD (Extensible Resource Descriptor)
*/
public static function fromXRD(XML_XRD $xrd)
{
$hints = [];
if (Event::handle('StartDiscoveryHintsFromXRD', [$xrd, &$hints])) {
foreach ($xrd->links as $link) {
switch ($link->rel) {
case WebFingerResource_Profile::PROFILEPAGE:
$hints['profileurl'] = $link->href;
break;
case Discovery::UPDATESFROM:
if (empty($link->type) || $link->type == 'application/atom+xml') {
$hints['feedurl'] = $link->href;
}
break;
case Discovery::HCARD:
case Discovery::MF2_HCARD:
$hints['hcard'] = $link->href;
break;
default:
break;
}
}
Event::handle('EndDiscoveryHintsFromXRD', [$xrd, &$hints]);
}
return $hints;
}
public static function fromHcardUrl($url)
{
$client = new HTTPClient();
$client->setHeader('Accept', 'text/html,application/xhtml+xml');
try {
$response = $client->get($url);
if (!$response->isOk()) {
return null;
}
} catch (HTTP_Request2_Exception $e) {
// Any HTTPClient error that might've been thrown
common_log(LOG_ERR, __METHOD__ . ':' . $e->getMessage());
return null;
}
return self::hcardHints(
$response->getBody(),
$response->getEffectiveUrl()
);
}
/**
* ??????
*
* @param mixed $body
* @param mixed $url
*/
public static function hcardHints($body, $url)
{
$hcard = self::_hcard($body, $url);
if (empty($hcard)) {
return [];
}
$hints = [];
// XXX: don't copy stuff into an array and then copy it again
if (array_key_exists('nickname', $hcard) && !empty($hcard['nickname'][0])) {
$hints['nickname'] = $hcard['nickname'][0];
}
if (array_key_exists('name', $hcard) && !empty($hcard['name'][0])) {
$hints['fullname'] = $hcard['name'][0];
}
if (array_key_exists('photo', $hcard) && count($hcard['photo'])) {
$hints['avatar'] = $hcard['photo'][0];
}
if (array_key_exists('note', $hcard) && !empty($hcard['note'][0])) {
$hints['bio'] = $hcard['note'][0];
}
if (array_key_exists('adr', $hcard) && !empty($hcard['adr'][0])) {
$hints['location'] = $hcard['adr'][0]['value'];
}
if (array_key_exists('url', $hcard) && !empty($hcard['url'][0])) {
$hints['homepage'] = $hcard['url'][0];
}
return $hints;
}
/**
* ?????????
*
* @param mixed $body
* @param mixed $url
*/
public static function _hcard($body, $url)
{
$mf2 = new Mf2\Parser($body, $url);
$mf2 = $mf2->parse();
if (empty($mf2['items'])) {
return null;
}
$hcards = [];
foreach ($mf2['items'] as $item) {
if (!in_array('h-card', $item['type'])) {
continue;
}
// We found a match, return it immediately
if (isset($item['properties']['url']) && in_array($url, $item['properties']['url'])) {
return $item['properties'];
}
// Let's keep all the hcards for later, to return one of them at least
$hcards[] = $item['properties'];
}
// No match immediately for the url we expected, but there were h-cards found
if (count($hcards) > 0) {
return $hcards[0];
}
return null;
}
}

511
plugins/ActivityPub/lib/explorer.php
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@ -1,511 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub's own Explorer
*
* Allows to discovery new (or the same) Profiles (both local or remote)
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class Activitypub_explorer
{
private $discovered_actor_profiles = [];
/**
* Shortcut function to get a single profile from its URL.
*
* @param string $url
* @param bool $grab_online whether to try online grabbing, defaults to true
*
* @throws HTTP_Request2_Exception Network issues
* @throws NoProfileException This won't happen
* @throws Exception Invalid request
* @throws ServerException Error storing remote actor
*
* @return Profile
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function get_profile_from_url(string $url, bool $grab_online = true): Profile
{
$discovery = new self();
// Get valid Actor object
$actor_profile = $discovery->lookup($url, $grab_online);
if (!empty($actor_profile)) {
return $actor_profile[0];
}
throw new Exception('Invalid Actor.');
}
/**
* Get every profile from the given URL
* This function cleans the $this->discovered_actor_profiles array
* so that there is no erroneous data
*
* @param string $url User's url
* @param bool $grab_online whether to try online grabbing, defaults to true
*
* @throws HTTP_Request2_Exception
* @throws NoProfileException
* @throws Exception
* @throws ServerException
*
* @return array of Profile objects
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function lookup(string $url, bool $grab_online = true)
{
if (in_array($url, ACTIVITYPUB_PUBLIC_TO)) {
return [];
}
common_debug('ActivityPub Explorer: Started now looking for ' . $url);
$this->discovered_actor_profiles = [];
return $this->_lookup($url, $grab_online);
}
/**
* Get every profile from the given URL
* This is a recursive function that will accumulate the results on
* $discovered_actor_profiles array
*
* @param string $url User's url
* @param bool $grab_online whether to try online grabbing, defaults to true
*
* @throws HTTP_Request2_Exception
* @throws NoProfileException
* @throws ServerException
* @throws Exception
*
* @return array of Profile objects
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function _lookup(string $url, bool $grab_online = true): array
{
$grab_local = $this->grab_local_user($url);
// First check if we already have it locally and, if so, return it.
// If the local fetch fails and remote grab is required: store locally and return.
if (!$grab_local && (!$grab_online || !$this->grab_remote_user($url))) {
throw new Exception('User not found.');
}
return $this->discovered_actor_profiles;
}
/**
* Get a local user profile from its URL and joins it on
* $this->discovered_actor_profiles
*
* @param string $uri Actor's uri
* @param bool $online
*
* @throws NoProfileException
* @throws Exception
*
* @return bool success state
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function grab_local_user(string $uri, bool $online = false): bool
{
if ($online) {
common_debug('ActivityPub Explorer: Searching locally for ' . $uri . ' with online resources.');
$all_ids = LRDDPlugin::grab_profile_aliases($uri);
} else {
common_debug('ActivityPub Explorer: Searching locally for ' . $uri . ' offline.');
$all_ids = [$uri];
}
if (is_null($all_ids)) {
common_debug('AcvitityPub Explorer: Unable to find a local profile for ' . $uri);
return false;
}
foreach ($all_ids as $alias) {
// Try standard ActivityPub route
// Is this a known filthy little mudblood?
$aprofile = self::get_aprofile_by_url($alias);
if ($aprofile instanceof Activitypub_profile) {
common_debug('ActivityPub Explorer: Found a local Aprofile for ' . $alias);
// double check to confirm this alias as a legitimate one
if ($online) {
common_debug('ActivityPub Explorer: Double-checking ' . $alias . ' to confirm it as a legitimate alias');
$disco = new Discovery();
$xrd = $disco->lookup($aprofile->getUri());
$doublecheck_aliases = array_merge([$xrd->subject], $xrd->aliases);
if (in_array($uri, $doublecheck_aliases)) {
// the original URI is present, we're sure now!
// update aprofile's URI and proceed
common_debug('ActivityPub Explorer: ' . $alias . ' is a legitimate alias');
$aprofile->updateUri($uri);
} else {
common_debug('ActivityPub Explorer: ' . $alias . ' is not an alias we can trust');
continue;
}
}
// Assert: This AProfile has a Profile, no try catch.
$profile = $aprofile->local_profile();
// We found something!
$this->discovered_actor_profiles[] = $profile;
return true;
} else {
common_debug('ActivityPub Explorer: Unable to find a local Aprofile for ' . $alias . ' - looking for a Profile instead.');
// Well, maybe it is a pure blood?
// Iff, we are in the same instance:
$ACTIVITYPUB_BASE_ACTOR_URI = common_local_url('userbyid', ['id' => null], null, null, false, true); // @FIXME: Could this be too hardcoded?
$ACTIVITYPUB_BASE_ACTOR_URI_length = strlen($ACTIVITYPUB_BASE_ACTOR_URI);
if (substr($alias, 0, $ACTIVITYPUB_BASE_ACTOR_URI_length) === $ACTIVITYPUB_BASE_ACTOR_URI) {
try {
$profile = Profile::getByID((int) substr($alias, $ACTIVITYPUB_BASE_ACTOR_URI_length));
common_debug('ActivityPub Explorer: Found a Profile for ' . $alias);
// We found something!
$this->discovered_actor_profiles[] = $profile;
return true;
} catch (Exception $e) {
// Let the exception go on its merry way.
common_debug('ActivityPub Explorer: Unable to find a Profile for ' . $alias);
}
}
}
}
// If offline grabbing failed, attempt again with online resources
if (!$online) {
common_debug('ActivityPub Explorer: Will try everything again with online resources against: ' . $uri);
return $this->grab_local_user($uri, true);
}
return false;
}
/**
* Get a remote user(s) profile(s) from its URL and joins it on
* $this->discovered_actor_profiles
*
* @param string $url User's url
*
* @throws HTTP_Request2_Exception
* @throws NoProfileException
* @throws ServerException
* @throws Exception
*
* @return bool success state
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function grab_remote_user(string $url): bool
{
common_debug('ActivityPub Explorer: Trying to grab a remote actor for ' . $url);
$client = new HTTPClient();
$response = $client->get($url, ACTIVITYPUB_HTTP_CLIENT_HEADERS);
$res = json_decode($response->getBody(), true);
if ($response->getStatus() == 410) { // If it was deleted
return true; // Nothing to add.
} elseif (!$response->isOk()) { // If it is unavailable
return false; // Try to add at another time.
}
if (is_null($res)) {
common_debug('ActivityPub Explorer: Invalid JSON returned from given Actor URL: ' . $response->getBody());
return true; // Nothing to add.
}
if (isset($res['type']) && $res['type'] === 'OrderedCollection' && isset($res['first'])) { // It's a potential collection of actors!!!
common_debug('ActivityPub Explorer: Found a collection of actors for ' . $url);
$this->travel_collection($res['first']);
return true;
} elseif (self::validate_remote_response($res)) {
common_debug('ActivityPub Explorer: Found a valid remote actor for ' . $url);
$this->discovered_actor_profiles[] = $this->store_profile($res);
return true;
} else {
common_debug('ActivityPub Explorer: Invalid potential remote actor while grabbing remotely: ' . $url . '. He returned the following: ' . json_encode($res, JSON_UNESCAPED_SLASHES));
return false;
}
return false;
}
/**
* Save remote user profile in local instance
*
* @param array $res remote response
*
* @throws NoProfileException
* @throws ServerException
* @throws Exception
*
* @return Profile remote Profile object
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function store_profile(array $res): Profile
{
// ActivityPub Profile
$aprofile = new Activitypub_profile;
$aprofile->uri = $res['id'];
$aprofile->nickname = $res['preferredUsername'];
$aprofile->fullname = $res['name'] ?? null;
$aprofile->bio = isset($res['summary']) ? substr(strip_tags($res['summary']), 0, 1000) : null;
$aprofile->inboxuri = $res['inbox'];
$aprofile->sharedInboxuri = $res['endpoints']['sharedInbox'] ?? $res['inbox'];
$aprofile->profileurl = $res['url'] ?? $aprofile->uri;
$aprofile->do_insert();
$profile = $aprofile->local_profile();
// Public Key
$apRSA = new Activitypub_rsa();
$apRSA->profile_id = $profile->getID();
$apRSA->public_key = $res['publicKey']['publicKeyPem'];
$apRSA->store_keys();
// Avatar
if (isset($res['icon']['url'])) {
try {
$this->update_avatar($profile, $res['icon']['url']);
} catch (Exception $e) {
// Let the exception go, it isn't a serious issue
common_debug('ActivityPub Explorer: An error ocurred while grabbing remote avatar: ' . $e->getMessage());
}
}
return $profile;
}
/**
* Validates a remote response in order to determine whether this
* response is a valid profile or not
*
* @param array $res remote response
*
* @return bool success state
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function validate_remote_response(array $res): bool
{
if (!isset($res['id'], $res['preferredUsername'], $res['inbox'], $res['publicKey']['publicKeyPem'])) {
return false;
}
return true;
}
/**
* Get a ActivityPub Profile from it's uri
* Unfortunately GNU social cache is not truly reliable when handling
* potential ActivityPub remote profiles, as so it is important to use
* this hacky workaround (at least for now)
*
* @param string $v URL
*
* @return Activitypub_profile|bool false if fails | Aprofile object if successful
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function get_aprofile_by_url(string $v)
{
$i = Managed_DataObject::getcached('Activitypub_profile', 'uri', $v);
if (empty($i)) { // false = cache miss
$i = new Activitypub_profile;
$result = $i->get('uri', $v);
if ($result) {
// Hit!
$i->encache();
} else {
return false;
}
}
return $i;
}
/**
* Given a valid actor profile url returns its inboxes
*
* @param string $url of Actor profile
*
* @throws HTTP_Request2_Exception
* @throws Exception If an irregular error happens (status code, body format or GONE)
*
* @return array|bool false if fails to validate the answer | array with inbox and shared inbox if successful
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function get_actor_inboxes_uri(string $url)
{
$client = new HTTPClient();
$response = $client->get($url, ACTIVITYPUB_HTTP_CLIENT_HEADERS);
if ($response->getStatus() == 410) { // If it was deleted
throw new Exception('This actor is GONE.');
} elseif (!$response->isOk()) { // If it is unavailable
throw new Exception('Non Ok Status Code for given Actor URL.');
}
$res = json_decode($response->getBody(), true);
if (is_null($res)) { // If it is in an unexpected format
common_debug('ActivityPub Explorer: Invalid JSON returned from given Actor URL: ' . $response->getBody());
throw new Exception('Given Actor URL didn\'t return a valid JSON.');
}
if (self::validate_remote_response($res)) {
return [
'inbox' => $res['inbox'],
'sharedInbox' => isset($res['endpoints']['sharedInbox']) ? $res['endpoints']['sharedInbox'] : $res['inbox'],
];
}
return false;
}
/**
* Download and update given avatar image
* TODO: Avoid updating an avatar if its URL didn't change. (this is something OStatus already does)
* TODO: Should be in AProfile instead?
*
* @param Profile $profile
* @param string $url
*
* @throws Exception in various failure cases
*
* @return Avatar The Avatar we have on disk. (seldom used)
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function update_avatar(Profile $profile, string $url): Avatar
{
common_debug('ActivityPub Explorer: Started grabbing remote avatar from: ' . $url);
// ImageFile throws exception if something goes wrong, which we'll let go on its merry way
$imagefile = ImageFile::fromURL($url);
$id = $profile->getID();
$type = $imagefile->preferredType();
$filename = Avatar::filename(
$id,
image_type_to_extension($type),
null,
'tmp' . common_timestamp()
);
$filepath = Avatar::path($filename);
/*$imagefile = */$imagefile->copyTo($filepath);
common_debug('ActivityPub Explorer: Stored avatar in: ' . $filepath);
// XXX: Do we need this?
chmod($filepath, 0644);
$profile->setOriginal($filename);
common_debug('ActivityPub Explorer: Seted Avatar from: ' . $url . ' to profile.');
return Avatar::getUploaded($profile);
}
/**
* Allows the Explorer to transverse a collection of persons.
*
* @param string $url
*
* @throws HTTP_Request2_Exception
* @throws NoProfileException
* @throws ServerException
*
* @return bool
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function travel_collection(string $url): bool
{
$client = new HTTPClient();
$response = $client->get($url, ACTIVITYPUB_HTTP_CLIENT_HEADERS);
$res = json_decode($response->getBody(), true);
if (!isset($res['orderedItems'])) {
return false;
}
foreach ($res['orderedItems'] as $profile) {
if ($this->_lookup($profile) == false) {
common_debug('ActivityPub Explorer: Found an invalid actor for ' . $profile);
// TODO: Invalid actor found, fallback to OStatus
}
}
// Go through entire collection
if (!is_null($res['next'])) {
$this->travel_collection($res['next']);
}
return true;
}
/**
* Get a remote user array from its URL (this function is only used for
* profile updating and shall not be used for anything else)
*
* @param string $url User's url
*
* @throws Exception Either network issues or unsupported Activity format
*
* @return array|false If it is able to fetch, false if it's gone
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function get_remote_user_activity(string $url)
{
$client = new HTTPClient();
$response = $client->get($url, ACTIVITYPUB_HTTP_CLIENT_HEADERS);
// If it was deleted
if ($response->getStatus() == 410) {
return false;
} elseif (!$response->isOk()) { // If it is unavailable
throw new Exception('Non Ok Status Code for given Actor URL.');
}
$res = json_decode($response->getBody(), true);
if (is_null($res)) {
common_debug('ActivityPub Explorer: Invalid JSON returned from given Actor URL: ' . $response->getBody());
throw new Exception('Given Actor URL didn\'t return a valid JSON.');
}
if (self::validate_remote_response($res)) {
common_debug('ActivityPub Explorer: Found a valid remote actor for ' . $url);
return $res;
}
throw new Exception('ActivityPub Explorer: Failed to get activity.');
}
}

192
plugins/ActivityPub/lib/httpsignature.php
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@ -1,192 +0,0 @@
<?php
/**
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @category Network
* @package Nautilus
*
* @author Aaron Parecki <aaron@parecki.com>
* @license http://www.apache.org/licenses/LICENSE-2.0 Apache License 2.0
*
* @see https://github.com/aaronpk/Nautilus/blob/master/app/ActivityPub/HTTPSignature.php
*/
class httpsignature
{
/**
* Sign a message with an Actor
*
* @param Profile $user Actor signing
* @param string $url Inbox url
* @param bool|string $body Data to sign (optional)
* @param array $addlHeaders Additional headers (optional)
*
* @throws Exception Attempted to sign something that belongs to an Actor we don't own
*
* @return array Headers to be used in curl
*/
public static function sign(Profile $user, string $url, $body = false, array $addlHeaders = []): array
{
$digest = false;
if ($body) {
$digest = self::_digest($body);
}
$headers = self::_headersToSign($url, $digest);
$headers = array_merge($headers, $addlHeaders);
$stringToSign = self::_headersToSigningString($headers);
$signedHeaders = implode(' ', array_map('strtolower', array_keys($headers)));
$actor_private_key = new Activitypub_rsa();
// Intentionally unhandled exception, we want this to explode if that happens as it would be a bug
$actor_private_key = $actor_private_key->get_private_key($user);
$key = openssl_pkey_get_private($actor_private_key);
openssl_sign($stringToSign, $signature, $key, OPENSSL_ALGO_SHA256);
$signature = base64_encode($signature);
$signatureHeader = 'keyId="' . $user->getUri() . '#public-key' . '",headers="' . $signedHeaders . '",algorithm="rsa-sha256",signature="' . $signature . '"';
unset($headers['(request-target)']);
$headers['Signature'] = $signatureHeader;
return self::_headersToCurlArray($headers);
}
/**
* @param mixed $body
*
* @return string
*/
private static function _digest($body): string
{
if (is_array($body)) {
$body = json_encode($body);
}
return base64_encode(hash('sha256', $body, true));
}
/**
* @param string $url
* @param mixed $digest
*
* @throws Exception
*
* @return array
*/
protected static function _headersToSign(string $url, $digest = false): array
{
$date = new DateTime('UTC');
$headers = [
'(request-target)' => 'post ' . parse_url($url, PHP_URL_PATH),
'Date' => $date->format('D, d M Y H:i:s \G\M\T'),
'Host' => parse_url($url, PHP_URL_HOST),
'Accept' => 'application/ld+json; profile="https://www.w3.org/ns/activitystreams", application/activity+json, application/json',
'User-Agent' => 'GNU social ActivityPub Plugin - ' . GNUSOCIAL_ENGINE_URL,
'Content-Type' => 'application/activity+json',
];
if ($digest) {
$headers['Digest'] = 'SHA-256=' . $digest;
}
return $headers;
}
/**
* @param array $headers
*
* @return string
*/
private static function _headersToSigningString(array $headers): string
{
return implode("\n", array_map(function ($k, $v) {
return strtolower($k) . ': ' . $v;
}, array_keys($headers), $headers));
}
/**
* @param array $headers
*
* @return array
*/
private static function _headersToCurlArray(array $headers): array
{
return array_map(function ($k, $v) {
return "{$k}: {$v}";
}, array_keys($headers), $headers);
}
/**
* @param string $signature
*
* @return array
*/
public static function parseSignatureHeader(string $signature): array
{
$parts = explode(',', $signature);
$signatureData = [];
foreach ($parts as $part) {
if (preg_match('/(.+)="(.+)"/', $part, $match)) {
$signatureData[$match[1]] = $match[2];
}
}
if (!isset($signatureData['keyId'])) {
return [
'error' => 'No keyId was found in the signature header. Found: ' . implode(', ', array_keys($signatureData)),
];
}
if (!filter_var($signatureData['keyId'], FILTER_VALIDATE_URL)) {
return [
'error' => 'keyId is not a URL: ' . $signatureData['keyId'],
];
}
if (!isset($signatureData['headers']) || !isset($signatureData['signature'])) {
return [
'error' => 'Signature is missing headers or signature parts',
];
}
return $signatureData;
}
/**
* @param $publicKey
* @param $signatureData
* @param $inputHeaders
* @param $path
* @param $body
*
* @return array
*/
public static function verify($publicKey, $signatureData, $inputHeaders, $path, $body): array
{
// We need this because the used Request headers fields specified by Signature are in lower case.
$headersContent = array_change_key_case($inputHeaders, CASE_LOWER);
$digest = 'SHA-256=' . base64_encode(hash('sha256', $body, true));
$headersToSign = [];
foreach (explode(' ', $signatureData['headers']) as $h) {
if ($h == '(request-target)') {
$headersToSign[$h] = 'post ' . $path;
} elseif ($h == 'digest') {
$headersToSign[$h] = $digest;
} elseif (isset($headersContent[$h][0])) {
$headersToSign[$h] = $headersContent[$h];
}
}
$signingString = self::_headersToSigningString($headersToSign);
$verified = openssl_verify($signingString, base64_decode($signatureData['signature']), $publicKey, OPENSSL_ALGO_SHA256);
return [$verified, $signingString];
}
}

450
plugins/ActivityPub/lib/inbox_handler.php
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@ -1,450 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub Inbox Handler
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class Activitypub_inbox_handler
{
private $activity;
private $actor;
private $object;
/**
* Create a Inbox Handler to receive something from someone.
*
* @param array $activity Activity we are receiving
* @param Profile $actor_profile Actor originating the activity
*
* @throws Exception
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function __construct($activity, $actor_profile = null)
{
$this->activity = $activity;
$this->object = $activity['object'];
// Validate Activity
if (!$this->validate_activity()) {
return; // Just ignore
}
// Get Actor's Profile
if (!is_null($actor_profile)) {
$this->actor = $actor_profile;
} else {
$this->actor = ActivityPub_explorer::get_profile_from_url($this->activity['actor']);
}
// Handle the Activity
$this->process();
}
/**
* Validates if a given Activity is valid. Throws exception if not.
*
* @throws Exception if invalid
*
* @return bool true if valid and acceptable, false if unsupported
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function validate_activity(): bool
{
// Activity validation
// Validate data
if (!(isset($this->activity['type']))) {
throw new Exception('Activity Validation Failed: Type was not specified.');
}
if (!isset($this->activity['actor'])) {
throw new Exception('Activity Validation Failed: Actor was not specified.');
}
if (!isset($this->activity['object'])) {
throw new Exception('Activity Validation Failed: Object was not specified.');
}
// Object validation
$valid = true;
switch ($this->activity['type']) {
case 'Accept':
$valid = Activitypub_accept::validate_object($this->object);
break;
case 'Create':
$valid = Activitypub_create::validate_object($this->object);
break;
case 'Delete':
$valid = Activitypub_delete::validate_object($this->object);
break;
case 'Follow':
case 'Like':
case 'Announce':
if (!filter_var($this->object, FILTER_VALIDATE_URL)) {
throw new Exception('Object is not a valid Object URI for Activity.');
}
break;
case 'Undo':
$valid = Activitypub_undo::validate_object($this->object);
break;
default:
throw new Exception('Unknown Activity Type.');
}
return $valid;
}
/**
* Sends the Activity to proper handler in order to be processed.
*
* @throws AlreadyFulfilledException
* @throws HTTP_Request2_Exception
* @throws NoProfileException
* @throws ServerException
* @throws Exception
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function process()
{
switch ($this->activity['type']) {
case 'Accept':
$this->handle_accept();
break;
case 'Create':
$this->handle_create();
break;
case 'Delete':
$this->handle_delete();
break;
case 'Follow':
$this->handle_follow();
break;
case 'Like':
$this->handle_like();
break;
case 'Undo':
$this->handle_undo();
break;
case 'Announce':
$this->handle_announce();
break;
}
}
/**
* Handles an Accept Activity received by our inbox.
*
* @throws HTTP_Request2_Exception
* @throws NoProfileException
* @throws ServerException
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function handle_accept()
{
switch ($this->object['type']) {
case 'Follow':
$this->handle_accept_follow();
break;
}
}
/**
* Handles an Accept Follow Activity received by our inbox.
*
* @throws HTTP_Request2_Exception
* @throws NoProfileException
* @throws ServerException
* @throws Exception
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function handle_accept_follow()
{
// Get valid Object profile
// Note that, since this an accept_follow, the $object
// profile is actually the actor that followed someone
$object_profile = new Activitypub_explorer;
$object_profile = $object_profile->lookup($this->object['object'])[0];
Activitypub_profile::subscribeCacheUpdate($object_profile, $this->actor);
$pending_list = new Activitypub_pending_follow_requests($object_profile->getID(), $this->actor->getID());
$pending_list->remove();
}
/**
* Handles a Create Activity received by our inbox.
*
* @throws Exception
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function handle_create()
{
switch ($this->object['type']) {
case 'Note':
$this->handle_create_note();
break;
}
}
/**
* Handle a Create Note Activity received by our inbox.
*
* @throws Exception
*
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
*/
private function handle_create_note()
{
if (Activitypub_create::isPrivateNote($this->activity)) {
Activitypub_message::create_message($this->object, $this->actor);
} else {
Activitypub_notice::create_notice($this->object, $this->actor);
}
}
/**
* Handles a Delete Activity received by our inbox.
*
* @throws NoProfileException
* @throws Exception
*
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function handle_delete()
{
$object = $this->object;
if (is_string($object)) {
$client = new HTTPClient();
$response = $client->get($object, ACTIVITYPUB_HTTP_CLIENT_HEADERS);
$gone = !$response->isOk();
if (!$gone) { // It's not gone, we're updating it.
$object = json_decode($response->getBody(), true);
switch ($object['type']) {
case 'Person':
try {
// Update profile if we already have a copy of it
$aprofile = Activitypub_profile::fromUri($object['id'], false);
Activitypub_profile::update_profile($aprofile, $object);
} catch (Exception $e) {
// Import profile if we don't
Activitypub_explorer::get_profile_from_url($object['id']);
}
break;
case 'Note': // XXX: We do not support updating a note's contents so, we'll delete and re-fetch for now...
try {
$notice = ActivityPubPlugin::grab_notice_from_url($object['id'], false);
if ($notice instanceof Notice) {
$notice->delete();
}
ActivityPubPlugin::grab_notice_from_url($object['id'], true);
return;
} catch (Exception $e) {
// either already deleted or not an object at all
// nothing to do..
}
break;
default:
common_log(LOG_INFO, "Ignoring Delete activity, we do not understand for {$object['type']}.");
}
}
} else {
// We don't know the type of the deleted object :(
// Nor if it's gone or not.
try {
if (is_array($object)) {
$object = $object['id'];
}
$aprofile = Activitypub_profile::fromUri($object, false);
$res = Activitypub_explorer::get_remote_user_activity($object);
Activitypub_profile::update_profile($aprofile, $res);
return;
} catch (Exception $e) {
// Means this wasn't a profile
}
try {
$client = new HTTPClient();
$response = $client->get($object, ACTIVITYPUB_HTTP_CLIENT_HEADERS);
// If it was deleted
if ($response->getStatus() == 410) {
$notice = ActivityPubPlugin::grab_notice_from_url($object, false);
if ($notice instanceof Notice) {
$notice->delete();
}
} else {
// We can't update a note's contents so, we'll ignore it for now...
}
return;
} catch (Exception $e) {
// Means we didn't have this note already
}
// Was it a profile?
try {
$aprofile = Activitypub_profile::fromUri($object, false);
$res = Activitypub_explorer::get_remote_user_activity($object);
Activitypub_profile::update_profile($aprofile, $res);
return;
} catch (Exception $e) {
// Means this wasn't a profile
}
// Was it a note?
try {
$client = new HTTPClient();
/*$response =*/ $client->get($object, ACTIVITYPUB_HTTP_CLIENT_HEADERS);
// If it were deleted
//if (!$response->isOk()) { // 410 or 404
$notice = ActivityPubPlugin::grab_notice_from_url($object, false);
if ($notice instanceof Notice) {
$notice->delete();
}
// } else
ActivityPubPlugin::grab_notice_from_url($object, true);
// XXX: We do not support updating a note's contents so, we'll delete and re-fetch for now...
} catch (Exception $e) {
// Means we didn't have this note already
// Or we had, deleted and it exploded trying to fetch the Tombstone, either way, we're good.
}
}
/**
* Handles a Follow Activity received by our inbox.
*
* @throws AlreadyFulfilledException
* @throws HTTP_Request2_Exception
* @throws NoProfileException
* @throws ServerException
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function handle_follow()
{
Activitypub_follow::follow($this->actor, $this->object, $this->activity['id']);
}
/**
* Handles a Like Activity received by our inbox.
*
* @throws Exception
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function handle_like()
{
$notice = ActivityPubPlugin::grab_notice_from_url($this->object);
Activitypub_like::addNew($this->activity['id'], $this->actor, $notice);
}
/**
* Handles a Undo Activity received by our inbox.
*
* @throws AlreadyFulfilledException
* @throws HTTP_Request2_Exception
* @throws NoProfileException
* @throws ServerException
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function handle_undo()
{
switch ($this->object['type']) {
case 'Follow':
$this->handle_undo_follow();
break;
case 'Like':
$this->handle_undo_like();
break;
}
}
/**
* Handles a Undo Follow Activity received by our inbox.
*
* @throws AlreadyFulfilledException
* @throws HTTP_Request2_Exception
* @throws NoProfileException
* @throws ServerException
* @throws Exception
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function handle_undo_follow()
{
// Get Object profile
$object_profile = new Activitypub_explorer;
$object_profile = $object_profile->lookup($this->object['object'])[0];
if (Subscription::exists($this->actor, $object_profile)) {
Subscription::cancel($this->actor, $object_profile);
// You are no longer following this person.
Activitypub_profile::unsubscribeCacheUpdate($this->actor, $object_profile);
} /*else {
// 409: You already aren't following this person.
}*/
}
/**
* Handles a Undo Like Activity received by our inbox.
*
* @throws AlreadyFulfilledException
* @throws ServerException
* @throws Exception
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function handle_undo_like()
{
$notice = ActivityPubPlugin::grab_notice_from_url($this->activity['id']);
Fave::removeEntry($this->actor, $notice);
}
/**
* Handles a Announce Activity received by our inbox.
*
* @throws Exception
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function handle_announce()
{
$notice = ActivityPubPlugin::grab_notice_from_url($this->object);
Activitypub_announce::repeat($this->activity['id'], $this->actor, $notice);
}
}

93
plugins/ActivityPub/lib/models/Activitypub_accept.php
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@ -1,93 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub error representation
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class Activitypub_accept
{
/**
* Generates an ActivityPub representation of a Accept
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*
* @param array $object
*
* @return array pretty array to be used in a response
*/
public static function accept_to_array($object)
{
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'id' => common_root_url() . 'accept_follow_from_' . urlencode($object['actor']) . '_to_' . urlencode($object['object']),
'type' => 'Accept',
'actor' => $object['object'],
'object' => $object,
];
return $res;
}
/**
* Verifies if a given object is acceptable for an Accept Activity.
*
* @param array $object
*
* @throws Exception
*
* @return bool
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function validate_object($object)
{
if (!is_array($object)) {
throw new Exception('Invalid Object Format for Accept Activity.');
}
if (!isset($object['type'])) {
throw new Exception('Object type was not specified for Accept Activity.');
}
switch ($object['type']) {
case 'Follow':
// Validate data
if (!filter_var($object['object'], FILTER_VALIDATE_URL)) {
throw new Exception('Object is not a valid Object URI for Activity.');
}
break;
default:
throw new Exception('This is not a supported Object Type for Accept Activity.');
}
return true;
}
}

109
plugins/ActivityPub/lib/models/Activitypub_announce.php
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@ -1,109 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub error representation
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class Activitypub_announce
{
/**
* Generates an ActivityPub representation of a Announce
*
* @param Profile $actor
* @param Notice $notice
*
* @return array pretty array to be used in a response
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function announce_to_array(Profile $actor, Notice $notice): array
{
$actor_uri = $actor->getUri();
$notice_url = Activitypub_notice::getUrl($notice);
$to = [common_local_url('apActorFollowers', ['id' => $actor->getID()])];
foreach ($notice->getAttentionProfiles() as $to_profile) {
$to[] = $to_profile->getUri();
}
$cc[] = 'https://www.w3.org/ns/activitystreams#Public';
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'id' => common_root_url() . 'share_from_' . urlencode($actor_uri) . '_to_' . urlencode($notice_url),
'type' => 'Announce',
'actor' => $actor_uri,
'object' => $notice_url,
'to' => $to,
'cc' => $cc,
];
return $res;
}
/**
* Convenience function for posting a repeat of an existing message.
*
* @param string $uri
* @param Profile $actor Profile which is doing the repeat
* @param Notice $target
* @return Notice
*/
public static function repeat(string $uri, Profile $actor, Notice $target): Notice
{
// TRANS: Message used to repeat a notice. RT is the abbreviation of 'retweet'.
// TRANS: %1$s is the repeated user's name, %2$s is the repeated notice.
$content = sprintf(
_('RT @%1$s %2$s'),
$actor->getNickname(),
$target->getContent()
);
$options = [
'source' => 'ActivityPub',
'uri' => $uri,
'is_local' => ($actor->isLocal() ? Notice::LOCAL_PUBLIC : Notice::REMOTE),
'repeat_of' => $target->getParent()->getID(),
'scope' => $target->getScope(),
];
// Scope is same as this one's
return Notice::saveNew(
$actor->getID(),
$content,
'ActivityPub',
$options
);
}
}

71
plugins/ActivityPub/lib/models/Activitypub_attachment.php
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@ -1,71 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub Attachment representation
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class Activitypub_attachment
{
/**
* Generates a pretty array from an Attachment object
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*
* @param Attachment $attachment
*
* @return array pretty array to be used in a response
*/
public static function attachment_to_array($attachment)
{
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'type' => 'Document',
'mediaType' => $attachment->mimetype,
'url' => $attachment->getUrl(),
'size' => $attachment->getSize(),
'name' => $attachment->getTitle(),
];
// Image
if (substr($res['mediaType'], 0, 5) == 'image') {
$res['meta'] = [
'width' => $attachment->width,
'height' => $attachment->height,
];
}
return $res;
}
}

122
plugins/ActivityPub/lib/models/Activitypub_create.php
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@ -1,122 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub error representation
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class Activitypub_create
{
/**
* Generates an ActivityPub representation of a Create
*
* @param string $actor
* @param array $object
* @param bool $directMessage whether it is a private Create activity or not
*
* @return array pretty array to be used in a response
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function create_to_array(string $actor, string $uri, $object, bool $directMessage = false): array
{
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'id' => $object['id'] . '/create',
'type' => 'Create',
'directMessage' => $directMessage,
'to' => $object['to'],
'cc' => $object['cc'],
'actor' => $actor,
'object' => $object,
];
return $res;
}
/**
* Verifies if a given object is acceptable for a Create Activity.
*
* @param array $object
*
* @throws Exception if invalid
*
* @return bool True if acceptable, false if valid but unsupported
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function validate_object($object): bool
{
if (!is_array($object)) {
common_debug('ActivityPub Create Validator: Rejected because of invalid Object format.');
throw new Exception('Invalid Object Format for Create Activity.');
}
if (!isset($object['type'])) {
common_debug('ActivityPub Create Validator: Rejected because of Type.');
throw new Exception('Object type was not specified for Create Activity.');
}
if (isset($object['directMessage']) && !is_bool($object['directMessage'])) {
common_debug('ActivityPub Create Validator: Rejected because Object directMessage is invalid.');
throw new Exception('Invalid Object directMessage.');
}
switch ($object['type']) {
case 'Note':
// Validate data
return Activitypub_notice::validate_note($object);
break;
default:
throw new Exception('This is not a supported Object Type for Create Activity.');
}
return true;
}
/**
* Verify if received note is private (direct).
* Note that we're conformant with the (yet) non-standard directMessage attribute:
* https://github.com/w3c/activitypub/issues/196#issuecomment-304958984
*
* @param array $activity received Create-Note activity
*
* @return bool true if note is private, false otherwise
*
* @author Bruno casteleiro <brunoccast@fc.up.pt>
*/
public static function isPrivateNote(array $activity): bool
{
if (isset($activity['directMessage'])) {
return $activity['directMessage'];
}
return empty($activity['cc']) && !in_array('https://www.w3.org/ns/activitystreams#Public', $activity['to']);
}
}

95
plugins/ActivityPub/lib/models/Activitypub_delete.php
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@ -1,95 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub delete representation
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class Activitypub_delete
{
/**
* Generates an ActivityStreams 2.0 representation of a Delete
*
* @param string $actor actor URI
* @param string $object object URI
*
* @return array pretty array to be used in a response
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function delete_to_array($object): array
{
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'id' => $object . '/delete',
'type' => 'Delete',
'to' => ['https://www.w3.org/ns/activitystreams#Public'],
'actor' => $actor,
'object' => $object,
];
return $res;
}
/**
* Verifies if a given object is acceptable for a Delete Activity.
*
* @param array|string $object
*
* @throws Exception
*
* @return bool
*
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
*/
public static function validate_object($object): bool
{
if (!is_array($object)) {
if (!filter_var($object, FILTER_VALIDATE_URL)) {
throw new Exception('Object is not a valid Object URI for Activity.');
}
} else {
if (!isset($object['type'])) {
throw new Exception('Object type was not specified for Delete Activity.');
}
if ($object['type'] !== 'Tombstone' && $object['type'] !== 'Person') {
throw new Exception('Invalid Object type for Delete Activity.');
}
if (!isset($object['id'])) {
throw new Exception('Object id was not specified for Delete Activity.');
}
}
return true;
}
}

56
plugins/ActivityPub/lib/models/Activitypub_error.php
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@ -1,56 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub error representation
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class Activitypub_error
{
/**
* Generates a pretty error from a string
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*
* @param string $m
*
* @return array pretty array to be used in a response
*/
public static function error_message_to_array(string $m): array
{
$res = [
'error' => $m,
];
}
}

104
plugins/ActivityPub/lib/models/Activitypub_follow.php
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@ -1,104 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub error representation
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class Activitypub_follow
{
/**
* Generates an ActivityPub representation of a subscription
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*
* @param string $actor
* @param string $object
* @param null|string $id Activity id, to be used when generating for an Accept Activity
*
* @return array pretty array to be used in a response
*/
public static function follow_to_array(string $actor, string $object, ?string $id = null): array
{
if ($id === null) {
$id = common_root_url() . 'follow_from_' . urlencode($actor) . '_to_' . urlencode($object);
}
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'id' => $id,
'type' => 'Follow',
'actor' => $actor,
'object' => $object,
];
return $res;
}
/**
* Handles a Follow Activity received by our inbox.
*
* @param Profile $actor_profile Remote Actor
* @param string $object Local Actor
* @param string $id Activity id
*
* @throws AlreadyFulfilledException
* @throws HTTP_Request2_Exception
* @throws NoProfileException
* @throws ServerException
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function follow(Profile $actor_profile, string $object, string $id)
{
// Get Actor's Aprofile
$actor_aprofile = Activitypub_profile::from_profile($actor_profile);
// Get Object profile
$object_profile = new Activitypub_explorer;
$object_profile = $object_profile->lookup($object)[0];
if (!Subscription::exists($actor_profile, $object_profile)) {
Subscription::start($actor_profile, $object_profile);
Activitypub_profile::subscribeCacheUpdate($actor_profile, $object_profile);
common_debug('ActivityPubPlugin: Accepted Follow request from ' . $actor_profile->getUri() . ' to ' . $object);
} else {
common_debug('ActivityPubPlugin: Received a repeated Follow request from ' . $actor_profile->getUri() . ' to ' . $object);
}
// Notify remote instance that we have accepted their request
common_debug('ActivityPubPlugin: Notifying remote instance that we have accepted their Follow request request from ' . $actor_profile->getUri() . ' to ' . $object);
$postman = new Activitypub_postman($object_profile, [$actor_aprofile]);
$postman->accept_follow($id);
}
}

116
plugins/ActivityPub/lib/models/Activitypub_like.php
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@ -1,116 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub Like representation
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class Activitypub_like
{
/**
* Generates an ActivityPub representation of a Like
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*
* @param string $actor Actor URI
* @param string $object Notice URI
*
* @return array pretty array to be used in a response
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function like_to_array(string $actor, Notice $notice): array
{
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'id' => common_root_url() . 'like_from_' . urlencode($actor) . '_to_' . urlencode($object),
'type' => 'Like',
'actor' => $actor,
'object' => $object,
];
return $res;
}
/**
* Save a favorite record.
*
* @param string $uri
* @param Profile $actor the local or remote Profile who favorites
* @param Notice $target the notice that is favorited
* @return Notice record on success
* @throws AlreadyFulfilledException
* @throws ClientException
* @throws NoticeSaveException
* @throws ServerException
*/
public static function addNew(string $uri, Profile $actor, Notice $target): Notice
{
if (Fave::existsForProfile($target, $actor)) {
// TRANS: Client error displayed when trying to mark a notice as favorite that already is a favorite.
throw new AlreadyFulfilledException(_m('You have already favorited this!'));
}
$act = new Activity();
$act->type = ActivityObject::ACTIVITY;
$act->verb = ActivityVerb::FAVORITE;
$act->time = time();
$act->id = $uri;
$act->title = _m('Favor');
// TRANS: Message that is the "content" of a favorite (%1$s is the actor's nickname, %2$ is the favorited
// notice's nickname and %3$s is the content of the favorited notice.)
$act->content = sprintf(
_m('%1$s favorited something by %2$s: %3$s'),
$actor->getNickname(),
$target->getProfile()->getNickname(),
$target->getRendered()
);
$act->actor = $actor->asActivityObject();
$act->target = $target->asActivityObject();
$act->objects = [clone($act->target)];
$url = common_local_url('AtomPubShowFavorite', ['profile'=>$actor->id, 'notice'=>$target->id]);
$act->selfLink = $url;
$act->editLink = $url;
$options = [
'source' => 'ActivityPub',
'uri' => $act->id,
'url' => $url,
'is_local' => ($actor->isLocal() ? Notice::LOCAL_PUBLIC : Notice::REMOTE),
'scope' => $target->getScope(),
];
// saveActivity will in turn also call Fave::saveActivityObject
return Notice::saveActivity($act, $actor, $options);
}
}

61
plugins/ActivityPub/lib/models/Activitypub_mention_tag.php
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@ -1,61 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub Mention Tag representation
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class Activitypub_mention_tag
{
/**
* Generates an ActivityPub representation of a Mention Tag
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*
* @param string $href Actor Uri
* @param string $name Mention name
*
* @return array pretty array to be used in a response
*/
public static function mention_tag_to_array_from_values(string $href, string $name): array
{
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'type' => 'Mention',
'href' => $href,
'name' => $name,
];
return $res;
}
}

96
plugins/ActivityPub/lib/models/Activitypub_message.php
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@ -1,96 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub direct note representation
*
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
* @copyright 2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class Activitypub_message
{
/**
* Generates a pretty message from a Notice object
*
* @param Notice $message
*
* @return array array to be used in a response
*
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
*/
public static function message_to_array(Notice $message): array
{
$from = $message->getProfile();
$tags = [];
foreach ($message->getTags() as $tag) {
if ($tag != '') { // Hacky workaround to avoid stupid outputs
$tags[] = Activitypub_tag::tag_to_array($tag);
}
}
$to = [];
foreach ($message->getAttentionProfiles() as $to_profile) {
$to[] = $href = $to_profile->getUri();
$tags[] = Activitypub_mention_tag::mention_tag_to_array_from_values($href, $to_profile->getNickname() . '@' . parse_url($href, PHP_URL_HOST));
}
$item = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'id' => common_local_url('showmessage', ['message' => $message->getID()]),
'type' => 'Note',
'published' => str_replace(' ', 'T', $message->created) . 'Z',
'attributedTo' => $from->getUri(),
'to' => $to,
'cc' => [],
'content' => $message->getRendered(),
'attachment' => [],
'tag' => $tags,
];
return $item;
}
/**
* Create a private Notice via ActivityPub Note Object.
* Returns created Notice.
*
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
*
* @param array $object
* @param Profile $actor_profile
*
* @throws Exception
*
* @return Notice
*/
public static function create_message(array $object, Profile $actor_profile = null): Notice
{
return Activitypub_notice::create_notice($object, $actor_profile, true);
}
}

356
plugins/ActivityPub/lib/models/Activitypub_notice.php
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@ -1,356 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub notice representation
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class Activitypub_notice
{
/**
* Generates a pretty notice from a Notice object
*
* @param Notice $notice
*
* @throws EmptyPkeyValueException
* @throws InvalidUrlException
* @throws ServerException
* @throws Exception
*
* @return array array to be used in a response
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function notice_to_array(Notice $notice): array
{
$profile = $notice->getProfile();
$attachments = [];
foreach ($notice->attachments() as $attachment) {
$attachments[] = Activitypub_attachment::attachment_to_array($attachment);
}
$tags = [];
foreach ($notice->getTags() as $tag) {
if ($tag != '') { // Hacky workaround to avoid stupid outputs
$tags[] = Activitypub_tag::tag_to_array($tag);
}
}
if ($notice->isPublic()) {
$to = ['https://www.w3.org/ns/activitystreams#Public'];
$cc = [common_local_url('apActorFollowers', ['id' => $profile->getID()])];
} else {
// Since we currently don't support sending unlisted/followers-only
// notices, arriving here means we're instead answering to that type
// of posts. Not having subscription policy working, its safer to
// always send answers of type unlisted.
$to = [];
$cc = ['https://www.w3.org/ns/activitystreams#Public'];
}
foreach ($notice->getAttentionProfiles() as $to_profile) {
$to[] = $href = $to_profile->getUri();
$tags[] = Activitypub_mention_tag::mention_tag_to_array_from_values($href, $to_profile->getNickname() . '@' . parse_url($href, PHP_URL_HOST));
}
$item = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'id' => self::getUrl($notice),
'type' => 'Note',
'published' => str_replace(' ', 'T', $notice->getCreated()) . 'Z',
'url' => self::getUrl($notice),
'attributedTo' => $profile->getUri(),
'to' => $to,
'cc' => $cc,
'conversation' => $notice->getConversationUrl(),
'content' => $notice->getRendered(),
'isLocal' => $notice->isLocal(),
'attachment' => $attachments,
'tag' => $tags,
];
// Is this a reply?
if (!empty($notice->reply_to)) {
$item['inReplyTo'] = self::getUri(Notice::getById($notice->reply_to));
}
// Do we have a location for this notice?
try {
$location = Notice_location::locFromStored($notice);
$item['latitude'] = $location->lat;
$item['longitude'] = $location->lon;
} catch (Exception $e) {
// Apparently no.
}
return $item;
}
/**
* Create a Notice via ActivityPub Note Object.
* Returns created Notice.
*
* @param array $object
* @param Profile $actor_profile
* @param bool $directMessage
*
* @throws Exception
*
* @return Notice
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function create_notice(array $object, Profile $actor_profile, bool $directMessage = false): Notice
{
$id = $object['id']; // int
$url = isset($object['url']) ? $object['url'] : $id; // string
$content = $object['content']; // string
// possible keys: ['inReplyTo', 'latitude', 'longitude']
$settings = [];
if (isset($object['inReplyTo'])) {
$settings['inReplyTo'] = $object['inReplyTo'];
}
if (isset($object['latitude'])) {
$settings['latitude'] = $object['latitude'];
}
if (isset($object['longitude'])) {
$settings['longitude'] = $object['longitude'];
}
$act = new Activity();
$act->verb = ActivityVerb::POST;
$act->time = time();
$act->actor = $actor_profile->asActivityObject();
$act->context = new ActivityContext();
$options = ['source' => 'ActivityPub',
'uri' => $id,
'url' => $url,
'is_local' => self::getNotePolicyType($object, $actor_profile), ];
if ($directMessage) {
$options['scope'] = Notice::MESSAGE_SCOPE;
}
// Is this a reply?
if (isset($settings['inReplyTo'])) {
try {
$inReplyTo = ActivityPubPlugin::grab_notice_from_url($settings['inReplyTo']);
$act->context->replyToID = $inReplyTo->getUri();
$act->context->replyToUrl = $inReplyTo->getUrl();
} catch (Exception $e) {
// It failed to grab, maybe we got this note from another source
// (e.g.: OStatus) that handles this differently or we really
// failed to get it...
// Welp, nothing that we can do about, let's
// just fake we don't have such notice.
}
} else {
$inReplyTo = null;
}
// Mentions
$mentions = [];
if (isset($object['tag']) && is_array($object['tag'])) {
foreach ($object['tag'] as $tag) {
if (array_key_exists('type', $tag) && $tag['type'] == 'Mention') {
$mentions[] = $tag['href'];
}
}
}
$mentions_profiles = [];
$discovery = new Activitypub_explorer;
foreach ($mentions as $mention) {
try {
$mentioned_profile = $discovery->lookup($mention);
if (!empty($mentioned_profile)) {
$mentions_profiles[] = $mentioned_profile[0];
}
} catch (Exception $e) {
// Invalid actor found, just let it go, it will eventually be handled by some other federation plugin like OStatus.
}
}
unset($discovery);
foreach ($mentions_profiles as $mp) {
if (!$mp->hasBlocked($actor_profile)) {
$act->context->attention[$mp->getUri()] = 'http://activitystrea.ms/schema/1.0/person';
}
}
// Add location if that is set
if (isset($settings['latitude'], $settings['longitude'])) {
$act->context->location = Location::fromLatLon($settings['latitude'], $settings['longitude']);
}
// Reject notice if it is too long (without the HTML)
if (Notice::contentTooLong($content)) {
throw new Exception('That\'s too long. Maximum notice size is %d character.');
}
// Attachments (first part)
$attachments = [];
if (isset($object['attachment']) && is_array($object['attachment'])) {
foreach ($object['attachment'] as $attachment) {
if (array_key_exists('type', $attachment)
&& $attachment['type'] === 'Document'
&& array_key_exists('url', $attachment)) {
try {
// throws exception on failure
$attachment = MediaFile::fromUrl($attachment['url'], $actor_profile, $attachment['name']);
$act->enclosures[] = $attachment->getEnclosure();
$attachments[] = $attachment;
} catch (Exception $e) {
// Whatever.
continue;
}
}
}
}
$actobj = new ActivityObject();
$actobj->type = ActivityObject::NOTE;
$actobj->content = strip_tags($content, '<p><b><i><u><a><ul><ol><li>');
// Finally add the activity object to our activity
$act->objects[] = $actobj;
$note = Notice::saveActivity($act, $actor_profile, $options);
// Attachments (last part)
foreach ($attachments as $attachment) {
$attachment->attachToNotice($note);
}
return $note;
}
/**
* Validates a note.
*
* @param array $object
*
* @throws Exception if invalid ActivityPub object
*
* @return bool false if unacceptable for GS but valid ActivityPub object
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function validate_note(array $object): bool
{
if (!isset($object['id'])) {
common_debug('ActivityPub Notice Validator: Rejected because Object ID was not specified.');
throw new Exception('Object ID not specified.');
} elseif (!filter_var($object['id'], FILTER_VALIDATE_URL)) {
common_debug('ActivityPub Notice Validator: Rejected because Object ID is invalid.');
throw new Exception('Invalid Object ID.');
}
if (!isset($object['type']) || $object['type'] !== 'Note') {
common_debug('ActivityPub Notice Validator: Rejected because of Type.');
throw new Exception('Invalid Object type.');
}
if (isset($object['url']) && !filter_var($object['url'], FILTER_VALIDATE_URL)) {
common_debug('ActivityPub Notice Validator: Rejected because Object URL is invalid.');
throw new Exception('Invalid Object URL.');
}
if (!(isset($object['to'], $object['cc']))) {
common_debug('ActivityPub Notice Validator: Rejected because either Object CC or TO wasn\'t specified.');
throw new Exception('Either Object CC or TO wasn\'t specified.');
}
if (!isset($object['content'])) {
common_debug('ActivityPub Notice Validator: Rejected because Content was not specified (GNU social requires content in notes).');
return false;
}
return true;
}
/**
* Get the original representation URL of a given notice.
*
* @param Notice $notice notice from which to retrieve the URL
*
* @throws InvalidUrlException
* @throws Exception
*
* @return string URL
*
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
* @see note_uri when it's not a generic activity but a object type note
*/
public static function getUri(Notice $notice): string
{
if ($notice->isLocal()) {
return common_local_url('apNotice', ['id' => $notice->getID()]);
} else {
return $notice->getUrl();
}
}
/**
* Use this if your Notice is in fact a note
*
* @param int $id
* @return string it's uri
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @see getUri for every other activity that aren't objects of a certain type like note
*/
public static function note_uri(int $id): string
{
return common_root_url() . 'object/note/' . $id;
}
/**
* Extract note policy type from note targets.
*
* @param array $note received Note
* @param Profile $actor_profile Note author
*
* @return int Notice policy type
*
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
*/
public static function getNotePolicyType(array $note, Profile $actor_profile): int
{
$addressee = array_unique(array_merge($note['to'], $note['cc']));
if (in_array('https://www.w3.org/ns/activitystreams#Public', $addressee)) {
return $actor_profile->isLocal() ? Notice::LOCAL_PUBLIC : Notice::REMOTE;
} else {
// either an unlisted or followers-only note, we'll handle
// both as a GATEWAY notice since this type is not visible
// from the public timelines, hence partially enough while
// we don't have subscription_policy working.
return Notice::GATEWAY;
}
}
}

59
plugins/ActivityPub/lib/models/Activitypub_reject.php
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@ -1,59 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub error representation
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class Activitypub_reject
{
/**
* Generates an ActivityPub representation of a Reject
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*
* @param array $object
*
* @return array pretty array to be used in a response
*/
public static function reject_to_array(array $object): array
{
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'type' => 'Reject',
'object' => $object,
];
return $res;
}
}

59
plugins/ActivityPub/lib/models/Activitypub_tag.php
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@ -1,59 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub representation of a Tag
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class Activitypub_tag
{
/**
* Generates a pretty tag from a Tag object
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*
* @param array Tag $tag
*
* @return array pretty array to be used in a response
*/
public static function tag_to_array(string $tag): array
{
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'name' => $tag,
'url' => common_local_url('tag', ['tag' => $tag]),
];
return $res;
}
}

58
plugins/ActivityPub/lib/models/Activitypub_tombstone.php
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@ -1,58 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2020 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
* @link http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub Tombstone representation
*
* @category Plugin
* @package GNUsocial
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class Activitypub_tombstone
{
/**
* Generates an ActivityPub representation of a Tombstone
*
* @param int $id Activity id
* @return array pretty array to be used in a response
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function tombstone_to_array(int $id): array
{
$dead = Deleted_notice::getByID($id);
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'id' => Activitypub_notice::note_uri($id),
'type' => 'Tombstone',
'created' => str_replace(' ', 'T', $dead->act_created) . 'Z',
'deleted' => str_replace(' ', 'T', $dead->created) . 'Z'
];
return $res;
}
}

94
plugins/ActivityPub/lib/models/Activitypub_undo.php
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@ -1,94 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub error representation
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class Activitypub_undo
{
/**
* Generates an ActivityPub representation of a Undo
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*
* @param array $object
*
* @return array pretty array to be used in a response
*/
public static function undo_to_array(array $object): array
{
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'id' => $object['id'] . '/undo',
'type' => 'Undo',
'actor' => $object['actor'],
'object' => $object,
];
return $res;
}
/**
* Verifies if a given object is acceptable for a Undo Activity.
*
* @param array $object
*
* @throws Exception
*
* @return bool
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function validate_object(array $object): bool
{
if (!is_array($object)) {
throw new Exception('Invalid Object Format for Undo Activity.');
}
if (!isset($object['type'])) {
throw new Exception('Object type was not specified for Undo Activity.');
}
switch ($object['type']) {
case 'Follow':
case 'Like':
// Validate data
if (!filter_var($object['object'], FILTER_VALIDATE_URL)) {
throw new Exception('Object is not a valid Object URI for Activity.');
}
break;
default:
throw new Exception('This is not a supported Object Type for Undo Activity.');
}
return true;
}
}

526
plugins/ActivityPub/lib/postman.php
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@ -1,526 +0,0 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub's own Postman
*
* Standard workflow expects that we send an Explorer to find out destinataries'
* inbox address. Then we send our postman to deliver whatever we want to send them.
*
* @category Plugin
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class Activitypub_postman
{
private $actor;
private $actor_uri;
private $to = [];
private $failed_to = [];
private $client;
private $headers;
/**
* Create a postman to deliver something to someone
*
* @param Profile $from sender Profile
* @param array $to receiver Profiles
*
* @throws Exception
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function __construct(Profile $from, array $to = [])
{
$this->actor = $from;
$this->to = $to;
$this->actor_uri = $this->actor->getUri();
$this->client = new HTTPClient();
}
/**
* When dear postman dies, resurrect him until he finishes what he couldn't in life
*
* @throws ServerException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function __destruct()
{
$qm = QueueManager::get();
foreach($this->failed_to as $to => $activity) {
$qm->enqueue([$to, $activity], 'activitypub_failed');
}
}
/**
* Send something to remote instance
*
* @param string $data request body
* @param string $inbox url of remote inbox
* @param string $method request method
*
* @throws HTTP_Request2_Exception
* @throws Exception
*
* @return GNUsocial_HTTPResponse
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function send($data, $inbox, $method = 'POST')
{
common_debug('ActivityPub Postman: Delivering ' . $data . ' to ' . $inbox);
$headers = HttpSignature::sign($this->actor, $inbox, $data);
common_debug('ActivityPub Postman: Delivery headers were: ' . print_r($headers, true));
$this->client->setBody($data);
switch ($method) {
case 'POST':
$response = $this->client->post($inbox, $headers);
break;
case 'GET':
$response = $this->client->get($inbox, $headers);
break;
default:
throw new Exception('Unsupported request method for postman.');
}
common_debug('ActivityPub Postman: Delivery result with status code ' . $response->getStatus() . ': ' . $response->getBody());
return $response;
}
/**
* Send a follow notification to remote instance
*
* @throws HTTP_Request2_Exception
* @throws Exception
*
* @return bool
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function follow()
{
$data = Activitypub_follow::follow_to_array($this->actor_uri, $this->to[0]->getUrl());
$res = $this->send(json_encode($data, JSON_UNESCAPED_SLASHES), $this->to[0]->get_inbox());
$res_body = json_decode($res->getBody(), true);
if ($res->getStatus() == 200 || $res->getStatus() == 202 || $res->getStatus() == 409) {
$pending_list = new Activitypub_pending_follow_requests($this->actor->getID(), $this->to[0]->getID());
$pending_list->add();
return true;
} elseif (isset($res_body['error'])) {
throw new Exception($res_body['error']);
}
throw new Exception('An unknown error occurred.');
}
/**
* Send a Undo Follow notification to remote instance
*
* @throws HTTP_Request2_Exception
* @throws Exception
* @throws Exception
* @throws Exception
* @throws Exception
*
* @return bool
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function undo_follow()
{
$data = Activitypub_undo::undo_to_array(
Activitypub_follow::follow_to_array(
$this->actor_uri,
$this->to[0]->getUrl()
)
);
$res = $this->send(json_encode($data, JSON_UNESCAPED_SLASHES), $this->to[0]->get_inbox());
$res_body = json_decode($res->getBody(), true);
if ($res->getStatus() == 200 || $res->getStatus() == 202 || $res->getStatus() == 409) {
Activitypub_profile::unsubscribeCacheUpdate($this->actor, $this->to[0]->local_profile());
$pending_list = new Activitypub_pending_follow_requests($this->actor->getID(), $this->to[0]->getID());
$pending_list->remove();
return true;
}
if (isset($res_body['error'])) {
throw new Exception($res_body['error']);
}
throw new Exception('An unknown error occurred.');
}
/**
* Send a Accept Follow notification to remote instance
*
* @param string $id Follow activity id
*
* @throws HTTP_Request2_Exception
* @throws Exception Description of HTTP Response error or generic error message.
*
* @return bool
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function accept_follow(string $id): bool
{
$data = Activitypub_accept::accept_to_array(
Activitypub_follow::follow_to_array(
$this->to[0]->getUrl(),
$this->actor_uri,
$id
)
);
$res = $this->send(json_encode($data, JSON_UNESCAPED_SLASHES), $this->to[0]->get_inbox());
$res_body = json_decode($res->getBody(), true);
if ($res->getStatus() == 200 || $res->getStatus() == 202 || $res->getStatus() == 409) {
$pending_list = new Activitypub_pending_follow_requests($this->to[0]->getID(), $this->actor->getID());
$pending_list->remove();
return true;
}
if (isset($res_body['error'])) {
throw new Exception($res_body['error']);
}
throw new Exception('An unknown error occurred.');
}
/**
* Send a Like notification to remote instances holding the notice
*
* @param Notice $notice
*
* @throws HTTP_Request2_Exception
* @throws InvalidUrlException
* @throws Exception
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function like(Notice $notice): void
{
$data = Activitypub_like::like_to_array(
$this->actor_uri,
$notice
);
$data = json_encode($data, JSON_UNESCAPED_SLASHES);
foreach ($this->to_inbox() as $inbox) {
try {
$res = $this->send($data, $inbox);
// accumulate errors for later use, if needed
if (!($res->getStatus() == 200 || $res->getStatus() == 202 || $res->getStatus() == 409)) {
$res_body = json_decode($res->getBody(), true);
$errors[] = isset($res_body['error']) ?
$res_body['error'] : "An unknown error occurred.";
$to_failed[$inbox] = $notice;
}
} catch (Exception $e){
$to_failed[$inbox] = $notice;
}
}
if (!empty($errors)) {
common_log(LOG_ERR, sizeof($errors) . ' instance/s failed to handle the like activity!');
}
}
/**
* Send a Undo Like notification to remote instances holding the notice
*
* @param Notice $notice
*
* @throws HTTP_Request2_Exception
* @throws InvalidUrlException
* @throws Exception
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function undo_like($notice)
{
$data = Activitypub_undo::undo_to_array(
Activitypub_like::like_to_array(
$this->actor_uri,
$notice
)
);
$data = json_encode($data, JSON_UNESCAPED_SLASHES);
foreach ($this->to_inbox() as $inbox) {
try {
$res = $this->send($data, $inbox);
// accummulate errors for later use, if needed
if (!($res->getStatus() == 200 || $res->getStatus() == 202 || $res->getStatus() == 409)) {
$res_body = json_decode($res->getBody(), true);
$errors[] = isset($res_body['error']) ?
$res_body['error'] : "An unknown error occurred.";
$to_failed[$inbox] = $notice;
}
} catch (Exception $e) {
$to_failed[$inbox] = $notice;
}
}
if (!empty($errors)) {
common_log(LOG_ERR, sizeof($errors) . ' instance/s failed to handle the undo-like activity!');
}
}
/**
* Send a Create notification to remote instances
*
* @param Notice $notice
*
* @throws EmptyPkeyValueException
* @throws HTTP_Request2_Exception
* @throws InvalidUrlException
* @throws ServerException
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function create_note($notice)
{
$data = Activitypub_create::create_to_array(
$this->actor_uri,
common_local_url('apNotice', ['id' => $notice->getID()]),
Activitypub_notice::notice_to_array($notice)
);
$data = json_encode($data, JSON_UNESCAPED_SLASHES);
foreach ($this->to_inbox() as $inbox) {
try {
$res = $this->send($data, $inbox);
// accummulate errors for later use, if needed
if (!($res->getStatus() == 200 || $res->getStatus() == 202 || $res->getStatus() == 409)) {
$res_body = json_decode($res->getBody(), true);
$errors[] = isset($res_body['error']) ?
$res_body['error'] : "An unknown error occurred.";
$to_failed[$inbox] = $notice;
}
} catch (Exception $e) {
$to_failed[$inbox] = $notice;
}
}
if (!empty($errors)) {
common_log(LOG_ERR, sizeof($errors) . ' instance/s failed to handle the create-note activity!');
}
}
/**
* Send a Create direct-notification to remote instances
*
* @param Notice $message
*
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
*/
public function create_direct_note(Notice $message)
{
$data = Activitypub_create::create_to_array(
$this->actor_uri,
common_local_url('apNotice', ['id' => $message->getID()]),
Activitypub_message::message_to_array($message),
true
);
$data = json_encode($data, JSON_UNESCAPED_SLASHES);
foreach ($this->to_inbox(false) as $inbox) {
$res = $this->send($data, $inbox);
// accummulate errors for later use, if needed
if (!($res->getStatus() == 200 || $res->getStatus() == 202 || $res->getStatus() == 409)) {
$res_body = json_decode($res->getBody(), true);
$errors[] = isset($res_body['error']) ?
$res_body['error'] : 'An unknown error occurred.';
}
}
if (!empty($errors)) {
common_log(LOG_ERR, sizeof($errors) . ' instance/s failed to handle the create-note activity!');
}
}
/**
* Send a Announce notification to remote instances
*
* @param Notice $notice
*
* @throws HTTP_Request2_Exception
* @throws Exception
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function announce(Notice $notice, Notice $repeat_of): void
{
$data = json_encode(
Activitypub_announce::announce_to_array($this->actor, $notice, $repeat_of),
JSON_UNESCAPED_SLASHES
);
foreach ($this->to_inbox() as $inbox) {
try {
$res = $this->send($data, $inbox);
// accummulate errors for later use, if needed
if (!($res->getStatus() == 200 || $res->getStatus() == 202 || $res->getStatus() == 409)) {
$res_body = json_decode($res->getBody(), true);
$errors[] = isset($res_body['error']) ?
$res_body['error'] : "An unknown error occurred.";
$to_failed[$inbox] = $notice;
}
} catch (Exception $e) {
$to_failed[$inbox] = $notice;
}
}
if (!empty($errors)) {
common_log(LOG_ERR, sizeof($errors) . ' instance/s failed to handle the announce activity!');
}
}
/**
* Send a Delete notification to remote instances holding the notice
*
* @param Notice $notice
*
* @throws HTTP_Request2_Exception
* @throws InvalidUrlException
* @throws Exception
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function delete_note($notice)
{
$data = Activitypub_delete::delete_to_array($notice);
$errors = [];
$data = json_encode($data, JSON_UNESCAPED_SLASHES);
foreach ($this->to_inbox() as $inbox) {
try {
$res = $this->send($data, $inbox);
if (!($res->getStatus() == 200 || $res->getStatus() == 202 || $res->getStatus() == 409)) {
$res_body = json_decode($res->getBody(), true);
$errors[] = isset($res_body['error']) ?
$res_body['error'] : "An unknown error occurred.";
$to_failed[$inbox] = $notice;
}
} catch (Exception $e) {
$to_failed[$inbox] = $notice;
}
}
if (!empty($errors)) {
throw new Exception(json_encode($errors));
}
}
/**
* Send a Delete notification to remote followers of some deleted profile
*
* @param Notice $notice
*
* @throws HTTP_Request2_Exception
* @throws InvalidUrlException
* @throws Exception
*
* @author Bruno Casteleiro <brunoccast@fc.up.pt>
*/
public function delete_profile(Profile $deleted_profile)
{
$data = Activitypub_delete::delete_to_array($deleted_profile);
$data = json_encode($data, JSON_UNESCAPED_SLASHES);
$errors = [];
foreach ($this->to_inbox() as $inbox) {
try {
$res = $this->send($data, $inbox);
// accumulate errors for later use, if needed
if (!($res->getStatus() == 200 || $res->getStatus() == 202 || $res->getStatus() == 409)) {
$res_body = json_decode($res->getBody(), true);
$errors[] = isset($res_body['error']) ?
$res_body['error'] : "An unknown error occurred.";
}
} catch (Exception $e) {
$to_failed[$inbox] = $notice;
}
}
if (!empty($errors)) {
common_log(LOG_ERR, sizeof($errors) . ' instance/s failed to handle the delete_profile activity!');
}
}
/**
* Clean list of inboxes to deliver messages
*
* @param bool $actorFollowers whether to include the actor's follower collection
*
* @throws Exception
*
* @return array To Inbox URLs
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function to_inbox(bool $actorFollowers = true): array
{
if ($actorFollowers) {
$discovery = new Activitypub_explorer();
$followers = apActorFollowersAction::generate_followers($this->actor, 0, null);
foreach ($followers as $sub) {
try {
$this->to[] = Activitypub_profile::from_profile($discovery->lookup($sub)[0]);
} catch (Exception $e) {
// Not an ActivityPub Remote Follower, let it go
}
}
unset($discovery);
}
$to_inboxes = [];
foreach ($this->to as $to_profile) {
$i = $to_profile->get_inbox();
// Prevent delivering to self
if ($i == common_local_url('apInbox')) {
continue;
}
$to_inboxes[] = $i;
}
return array_unique($to_inboxes);
}
}

54
plugins/ActivityPub/locale/en_GB/LC_MESSAGES/ActivityPub.po
View File

@ -1,54 +0,0 @@
# Translation file for GNU social - the free software social networking platform
# Copyright (C) 2015 - 2019 Free Software Foundation, Inc http://www.fsf.org
# This file is under https://www.gnu.org/licenses/agpl v3 or later
#
# Translators:
# Diogo Cordeiro <diogo@fc.up.pt>, 2019
msgid ""
msgstr ""
"Project-Id-Version: GNU social\n"
"Report-Msgid-Bugs-To: \n"
"POT-Creation-Date: 2019-06-12 01:23+0100\n"
"PO-Revision-Date: 2019-06-12 01:23+0100\n"
"Last-Translator: Diogo Cordeiro <diogo@fc.up.pt>\n"
"Language-Team: English (United Kingdom) (http://www.transifex.com/gnu-social/gnu-social/language/en_GB/)\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"Language: en_GB\n"
"Plural-Forms: nplurals=2; plural=(n != 1);\n"
#. TRANS: Plugin description.
#: ActivityPubPlugin.php:212
msgid ""
"Follow people across social networks that implement <a href=\"https://"
"activitypub.rocks/\">ActivityPub</a>."
msgstr ""
"Follow people across social networks that implement <a href=\"https://"
"activitypub.rocks/\">ActivityPub</a>."
#: ActivityPubPlugin.php:254
msgid "Remote Profile"
msgstr "Remote Profile"
#. TRANS: Title. %s is a domain name.
#: ActivityPubPlugin.php:909
#, php-format
msgid "Sent from %s via ActivityPub"
msgstr "Sent from %s via ActivityPub"
#. TRANS: Exception.
#: classes/Activitypub_profile.php:355
msgid "Not a valid webfinger address (via cache)."
msgstr "Not a valid WebFinger address (via cache)."
#. TRANS: Exception.
#: classes/Activitypub_profile.php:376
msgid "Not a valid webfinger address."
msgstr "Not a valid WebFinger address."
#. TRANS: Exception. %s is a webfinger address.
#: classes/Activitypub_profile.php:416
#, php-format
msgid "Could not find a valid profile for \"%s\"."
msgstr "Could not find a valid profile for \"%s\"."

54
plugins/ActivityPub/locale/pt/LC_MESSAGES/ActivityPub.po
View File

@ -1,54 +0,0 @@
# Translation file for GNU social - the free software social networking platform
# Copyright (C) 2015 - 2019 Free Software Foundation, Inc http://www.fsf.org
# This file is under https://www.gnu.org/licenses/agpl v3 or later
#
# Translators:
# Diogo Cordeiro <diogo@fc.up.pt>, 2019
msgid ""
msgstr ""
"Project-Id-Version: GNU social\n"
"Report-Msgid-Bugs-To: \n"
"POT-Creation-Date: 2019-06-12 01:23+0100\n"
"PO-Revision-Date: 2019-06-12 01:23+0100\n"
"Last-Translator: Diogo Cordeiro <diogo@fc.up.pt>\n"
"Language-Team: Portuguese (http://www.transifex.com/gnu-social/gnu-social/language/pt/)\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"Language: pt\n"
"Plural-Forms: nplurals=2; plural=(n != 1);\n"
#. TRANS: Plugin description.
#: ActivityPubPlugin.php:212
msgid ""
"Follow people across social networks that implement <a href=\"https://"
"activitypub.rocks/\">ActivityPub</a>."
msgstr ""
"Segue pessoas em redes sociais que implementam <a href=\"https://"
"activitypub.rocks/\">ActivityPub</a>."
#: ActivityPubPlugin.php:254
msgid "Remote Profile"
msgstr "Perfil Remoto"
#. TRANS: Title. %s is a domain name.
#: ActivityPubPlugin.php:909
#, php-format
msgid "Sent from %s via ActivityPub"
msgstr "Enviado por %s via ActivityPub"
#. TRANS: Exception.
#: classes/Activitypub_profile.php:355
msgid "Not a valid webfinger address (via cache)."
msgstr "Endereço WebFinger inválido (via cache)."
#. TRANS: Exception.
#: classes/Activitypub_profile.php:376
msgid "Not a valid webfinger address."
msgstr "Endereço WebFinger inválido."
#. TRANS: Exception. %s is a webfinger address.
#: classes/Activitypub_profile.php:416
#, php-format
msgid "Could not find a valid profile for \"%s\"."
msgstr "Não foi possível encontrar um perfil válido para \"%s\"."

54
plugins/ActivityPub/locale/pt_BR/LC_MESSAGES/ActivityPub.po
View File

@ -1,54 +0,0 @@
# Translation file for GNU social - the free software social networking platform
# Copyright (C) 2015 - 2019 Free Software Foundation, Inc http://www.fsf.org
# This file is under https://www.gnu.org/licenses/agpl v3 or later
#
# Translators:
# Diogo Cordeiro <diogo@fc.up.pt>, 2019
msgid ""
msgstr ""
"Project-Id-Version: GNU social\n"
"Report-Msgid-Bugs-To: \n"
"POT-Creation-Date: 2019-06-12 01:23+0100\n"
"PO-Revision-Date: 2019-06-12 02:24+0100\n"
"Last-Translator: Diogo Cordeiro <diogo@fc.up.pt>\n"
"Language-Team: Portuguese (Brazil) (http://www.transifex.com/gnu-social/gnu-social/language/pt_BR/)\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"Language: pt_BR\n"
"Plural-Forms: nplurals=2; plural=(n != 1);\n"
#. TRANS: Plugin description.
#: ActivityPubPlugin.php:212
msgid ""
"Follow people across social networks that implement <a href=\"https://"
"activitypub.rocks/\">ActivityPub</a>."
msgstr ""
"Segue pessoas em redes sociais que implementam <a href=\"https://"
"activitypub.rocks/\">ActivityPub</a>."
#: ActivityPubPlugin.php:254
msgid "Remote Profile"
msgstr "Perfil Remoto"
#. TRANS: Title. %s is a domain name.
#: ActivityPubPlugin.php:909
#, php-format
msgid "Sent from %s via ActivityPub"
msgstr "Enviado por %s via ActivityPub"
#. TRANS: Exception.
#: classes/Activitypub_profile.php:355
msgid "Not a valid webfinger address (via cache)."
msgstr "Endereço WebFinger inválido (via cache)."
#. TRANS: Exception.
#: classes/Activitypub_profile.php:376
msgid "Not a valid webfinger address."
msgstr "Endereço WebFinger inválido."
#. TRANS: Exception. %s is a webfinger address.
#: classes/Activitypub_profile.php:416
#, php-format
msgid "Could not find a valid profile for \"%s\"."
msgstr "Não foi possível encontrar um perfil válido para \"%s\"."

25
plugins/ActivityPub/phpunit.xml
View File

@ -1,25 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<phpunit backupGlobals="false"
backupStaticAttributes="false"
bootstrap="vendor/autoload.php"
colors="true"
convertErrorsToExceptions="true"
convertNoticesToExceptions="true"
convertWarningsToExceptions="true"
processIsolation="false"
stopOnFailure="false">
<testsuites>
<testsuite name="Feature">
<directory suffix="Test.php">./tests/Feature</directory>
</testsuite>
<testsuite name="Unit">
<directory suffix="Test.php">./tests/Unit</directory>
</testsuite>
</testsuites>
<filter>
<whitelist processUncoveredFilesFromWhitelist="true">
<directory suffix=".php">./app</directory>
</whitelist>
</filter>
</phpunit>

94
plugins/ActivityPub/scripts/fix_subscriptions.php
View File

@ -1,94 +0,0 @@
#!/usr/bin/env php
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
define('INSTALLDIR', dirname(__DIR__, 3));
define('PUBLICDIR', INSTALLDIR . DIRECTORY_SEPARATOR . 'public');
$shortoptions = 'i:af';
$longoptions = ['id=', 'all', 'force'];
$helptext = <<<END_OF_HELP
fix_subsriptions.php [options]
For every ActivityPub subscription, re-send Follow activity.
-i --id Local user id whose follows shall be re-sent
-a --all update all
END_OF_HELP;
require_once INSTALLDIR . '/scripts/commandline.inc';
if (have_option('i', 'id')) {
$id = get_option_value('i', 'id');
$user = User::getByID($id);
fix_subscriptions($user->getProfile());
exit(0);
} elseif (!have_option('a', 'all')) {
show_help();
exit(1);
}
$user = new User();
$cnt = $user->find();
while ($user->fetch()) {
fix_subscriptions($user->getProfile());
}
$user->free();
unset($user);
printfnq("Done.\n");
/**
* Validate and fix the `subscription` table
*/
function fix_subscriptions(Profile $profile)
{
// Collect every remote AP subscription
$aprofiles = [];
$subs = Subscription::getSubscribedIDs($profile->getID(), 0, null);
$subs_aprofiles = Activitypub_profile::multiGet('profile_id', $subs);
foreach ($subs_aprofiles->fetchAll() as $ap) {
$aprofiles[$ap->getID()] = $ap;
}
unset($subs_aprofiles);
// For each remote AP subscription, send a Follow activity
foreach ($aprofiles as $sub) {
try {
$postman = new Activitypub_postman($profile, [$sub]);
$postman->follow();
printfnq(
'Ensured subscription between ' . $profile->getBestName()
. ' and ' . $sub->getUri() . "\n"
);
} catch (Exception $e) {
// Let it go
printfnq('Failed to ensure subscription between ' . $profile->getBestName()
. ' and ' . $sub->getUri() . "\n"
);
printfnq('The reason was: ' . $e->getMessage() . "\n");
}
}
}

93
plugins/ActivityPub/scripts/update_activitypub_profiles.php
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@ -1,93 +0,0 @@
#!/usr/bin/env php
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* ActivityPub implementation for GNU social
*
* @package GNUsocial
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @copyright 2018-2019 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*
* @see http://www.gnu.org/software/social/
*/
define('INSTALLDIR', dirname(__DIR__, 3));
define('PUBLICDIR', INSTALLDIR . DIRECTORY_SEPARATOR . 'public');
$shortoptions = 'u:af';
$longoptions = ['uri=', 'all', 'force'];
$helptext = <<<END_OF_HELP
update_activitypub_profiles.php [options]
Refetch / update ActivityPub RSA keys, profile info and avatars. Useful if you
do something like accidentally delete your avatars directory when
you have no backup.
-u --uri ActivityPub profile URI to update
-a --all update all
END_OF_HELP;
require_once INSTALLDIR . '/scripts/commandline.inc';
if (!have_option('q', 'quiet')) {
echo "ActivityPub Profiles updater will now start!\n";
echo "Summoning Diogo Cordeiro, Richard Stallman and Chuck Norris to help us with this task!\n";
}
if (have_option('u', 'uri')) {
$uri = get_option_value('u', 'uri');
$user = Activitypub_profile::from_profile(Activitypub_explorer::get_profile_from_url($uri));
try {
$res = Activitypub_explorer::get_remote_user_activity($uri);
} catch (Exception $e) {
echo $e->getMessage() . "\n";
exit(1);
}
printfnq('Updated ' . Activitypub_profile::update_profile($user, $res)->getBestName() . "\n");
exit(0);
} elseif (!have_option('a', 'all')) {
show_help();
exit(1);
}
$user = new Activitypub_profile();
$cnt = $user->find();
if (!empty($cnt)) {
printfnq("Found {$cnt} ActivityPub profiles:\n");
} else {
if (have_option('u', 'uri')) {
printfnq("Couldn't find an existing ActivityPub profile with that URI.\n");
} else {
printfnq("Couldn't find any existing ActivityPub profiles.\n");
}
exit(0);
}
while ($user->fetch()) {
try {
$res = Activitypub_explorer::get_remote_user_activity($user->uri);
$updated_profile = Activitypub_profile::update_profile($user, $res);
printfnq('Updated ' . $updated_profile->getBestName() . "\n");
} catch (NoProfileException $e) {
printfnq('Deleted ' . $user->uri . "\n");
} catch (Exception $e) {
// let it go
}
}
$user->free();
unset($user);