GNUsocial/gnu-social
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[CORE] Add ActivityPub plugin

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This is not the same as the one in https://notabug.org/diogo/gnu-social-activitypub-plugin
Differences to the first "release"
-> Doesn't use guzzle nor has any composer dependencies
-> Supports HTTP Signatures
-> Has basic l10n/i18n
-> Some minor bug fixes
This commit is contained in:
Diogo Cordeiro 2019-05-11 12:27:21 +01:00 committed by Diogo Peralta Cordeiro
parent 6bf888b520
commit 2f1ddd8280
50 changed files with 7823 additions and 0 deletions
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@ -352,6 +352,7 @@ $default =
'Embed' => array(), 'Embed' => array(),
'OpenID' => array(), 'OpenID' => array(),
'OpportunisticQM' => array(), 'OpportunisticQM' => array(),
'ActivityPub' => array(),
'OStatus' => array(), 'OStatus' => array(),
'Poll' => array(), 'Poll' => array(),
'SimpleCaptcha' => array(), 'SimpleCaptcha' => array(),

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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-2](https://www.php-fig.org/psr/psr-2/) ...
- ... 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:
* The use of sexualized language or imagery and unwelcome sexual attention or
advances
* Trolling, insulting/derogatory comments, and personal or political attacks
* Public or private harassment
* Publishing others' private information, such as a physical or electronic
address, without explicit permission
* Other conduct which could reasonably be considered inappropriate in a
professional setting
### Our Responsibilities
Project maintainers are responsible for clarifying the standards of acceptable
behavior and are expected to take appropriate and fair corrective action in
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
representative at an online or offline event. Representation of a project may be
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### Enforcement
Instances of abusive, harassing, or otherwise unacceptable behavior may be
reported by contacting the project team at diogo@fc.up.pt. All
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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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to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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/>.

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# 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.
## 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*.

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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
* @link 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
*
* @return void
* @throws Exception
* @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 {
$page = intval($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_subs = $profile->subscriberCount();
$total_pages = ceil($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 $limit
* @return array of URIs
* @throws Exception
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function generate_followers($profile, $since, $limit)
{
/* Fetch Followers */
try {
$sub = $profile->getSubscribers($since, $limit);
} catch (NoResultException $e) {
// Just let the exception go on its merry way
}
/* Get followers' URLs */
$subs = [];
while ($sub->fetch()) {
$subs[] = ActivityPubPlugin::actor_uri($sub);
}
return $subs;
}
}

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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
* @link 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
*
* @return void
* @throws Exception
* @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 {
$page = intval($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_subs = $profile->subscriptionCount();
$total_pages = ceil($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 $limit
* @return array of URIs
* @throws Exception
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function generate_following($profile, $since, $limit)
{
/* Fetch Following */
try {
$sub = $profile->getSubscribed($since, $limit);
} catch (NoResultException $e) {
// Just let the exception go on its merry way
}
/* Get followed' URLs */
$subs = [];
while ($sub->fetch()) {
$subs[] = ActivityPubPlugin::actor_uri($sub);
}
return $subs;
}
}

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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
* @link 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
*
* @return void
* @throws EmptyPkeyValueException
* @throws ServerException
* @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);
}
$limit = intval($this->trimmed('limit'));
$since_id = intval($this->trimmed('since_id'));
$max_id = intval($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);
$faves = array();
while ($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 $fave_object
* @return array pretty array representating a Fave
* @throws EmptyPkeyValueException
* @throws ServerException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
protected function pretty_fave($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;
$fav->orderBy('modified DESC');
if ($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;
}
}

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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
* @link 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 {
$page = intval($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 $profile
* @return array of Notices
* @throws EmptyPkeyValueException
* @throws InvalidUrlException
* @throws ServerException
* @author Daniel Supernault <danielsupernault@gmail.com>
*/
public function generate_outbox($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') {
$notices[] = Activitypub_create::create_to_array(
ActivityPubPlugin::actor_uri($note->getProfile()),
Activitypub_notice::notice_to_array($note)
);
}
}
return $notices;
}
}

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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
* @link 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 $canPost = true;
/**
* Handle the Actor Profile request
*
* @return void
* @throws InvalidUrlException
* @throws ServerException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
protected function handle()
{
if (!empty($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);
}
}

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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
* @link 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
*
* @return void
* @throws ServerException
* @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.');
}
$actor = Activitypub_explorer::get_profile_from_url($data['actor']);
$aprofile = Activitypub_profile::from_profile($actor);
$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 = $this->get_all_headers();
common_debug('ActivityPub Inbox: Request Headers: '.print_r($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, $body);
// If the signature fails verification the first time, update profile as it might have change public key
if($verified !== 1) {
$res = Activitypub_explorer::get_remote_user_activity($aprofile->getUri());
$actor = Activitypub_profile::update_profile($aprofile, $res);
$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());
}
}
/**
* Get all HTTP header key/values as an associative array for the current request.
*
* @return array [string] The HTTP header key/value pairs.
* @author PHP Manual Contributed Notes <joyview@gmail.com>
*/
private function get_all_headers()
{
$headers = [];
foreach ($_SERVER as $name => $value) {
if (substr($name, 0, 5) == 'HTTP_') {
$headers[strtolower(str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5))))))] = $value;
}
}
return $headers;
}
}

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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
* @link 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;
/**
* Handle the Notice request
*
* @return void
* @throws EmptyPkeyValueException
* @throws InvalidUrlException
* @throws ServerException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
protected function handle()
{
try {
$notice = Notice::getByID($this->trimmed('id'));
} catch (Exception $e) {
ActivityPubReturn::error('Invalid Notice URI.', 404);
}
if (!$notice->isLocal()) {
ActivityPubReturn::error("This is not a local notice.", 403);
}
$res = Activitypub_notice::notice_to_array($notice);
ActivityPubReturn::answer($res);
}
}

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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
* @link 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 extends Managed_DataObject
{
/**
* 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 $object
* @return bool
* @throws Exception
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function validate_object($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;
}
}

57
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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
* @link 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 extends Managed_DataObject
{
/**
* Generates an ActivityPub representation of a Announce
*
* @param $actor
* @param array $object
* @return array pretty array to be used in a response
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function announce_to_array($actor, $object)
{
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
"type" => "Announce",
"actor" => $actor,
"object" => $object
];
return $res;
}
}

67
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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
* @link 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 extends Managed_DataObject
{
/**
* 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;
}
}

85
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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
* @link 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 extends Managed_DataObject
{
/**
* Generates an ActivityPub representation of a Create
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param string $actor
* @param array $object
* @return array pretty array to be used in a response
*/
public static function create_to_array($actor, $object)
{
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'id' => $object['id'].'/create',
'type' => 'Create',
'to' => $object['to'],
'cc' => $object['cc'],
'actor' => $actor,
'object' => $object
];
return $res;
}
/**
* Verifies if a given object is acceptable for a Create Activity.
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param array $object
* @throws Exception
*/
public static function validate_object($object)
{
if (!is_array($object)) {
throw new Exception('Invalid Object Format for Create Activity.');
}
if (!isset($object['type'])) {
throw new Exception('Object type was not specified for Create Activity.');
}
switch ($object['type']) {
case 'Note':
// Validate data
Activitypub_notice::validate_note($object);
break;
default:
throw new Exception('This is not a supported Object Type for Create Activity.');
}
}
}

58
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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
* @link 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_delete extends Managed_DataObject
{
/**
* Generates an ActivityPub representation of a Delete
*
* @param $actor
* @param array $object
* @return array pretty array to be used in a response
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function delete_to_array($actor, $object)
{
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'id' => $object.'/delete',
'type' => 'Delete',
'actor' => $actor,
'object' => $object
];
return $res;
}
}

53
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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
* @link 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 extends Managed_DataObject
{
/**
* Generates a pretty error from a string
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param string $m
* @return array pretty array to be used in a response
*/
public static function error_message_to_array($m)
{
$res = [
'error'=> $m
];
return $res;
}
}

91
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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
* @link 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 extends Managed_DataObject
{
/**
* Generates an ActivityPub representation of a subscription
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param string $actor
* @param string $object
* @return array pretty array to be used in a response
*/
public static function follow_to_array($actor, $object)
{
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'id' => common_root_url().'follow_from_'.urlencode($actor).'_to_'.urlencode($object),
'type' => 'Follow',
'actor' => $actor,
'object' => $object
];
return $res;
}
/**
* Handles a Follow Activity received by our inbox.
*
* @param Profile $actor_profile Remote Actor
* @param string $object Local Actor
* @throws AlreadyFulfilledException
* @throws HTTP_Request2_Exception
* @throws NoProfileException
* @throws ServerException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function follow($actor_profile, $object)
{
// 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, $object_profile);
common_debug('ActivityPubPlugin: Accepted Follow request from '.ActivityPubPlugin::actor_uri($actor_profile).' to '.$object);
} else {
common_debug('ActivityPubPlugin: Received a repeated Follow request from '.ActivityPubPlugin::actor_uri($actor_profile).' to '.$object);
}
// Notify remote instance that we have accepted their request
common_debug('ActivityPubPlugin: Notifying remote instance that we have accepted their Follow request request from '.ActivityPubPlugin::actor_uri($actor_profile).' to '.$object);
$postman = new Activitypub_postman($actor_profile, [$actor_aprofile]);
$postman->accept_follow();
}
}

58
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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
* @link 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_like extends Managed_DataObject
{
/**
* Generates an ActivityPub representation of a Like
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param string $actor Actor URI
* @param string $object Notice URI
* @return array pretty array to be used in a response
*/
public static function like_to_array($actor, $object)
{
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'id' => common_root_url().'like_from_'.urlencode($actor).'_to_'.urlencode($object),
"type" => "Like",
"actor" => $actor,
"object" => $object
];
return $res;
}
}

57
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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
* @link 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 extends Managed_DataObject
{
/**
* Generates an ActivityPub representation of a Mention Tag
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param string $href Actor Uri
* @param array $name Mention name
* @return array pretty array to be used in a response
*/
public static function mention_tag_to_array_from_values($href, $name)
{
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
"type" => "Mention",
"href" => $href,
"name" => $name
];
return $res;
}
}

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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
* @link 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 extends Managed_DataObject
{
/**
* Generates a pretty notice from a Notice object
*
* @param Notice $notice
* @return array array to be used in a response
* @throws EmptyPkeyValueException
* @throws InvalidUrlException
* @throws ServerException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function notice_to_array($notice)
{
$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);
}
}
$cc = [common_local_url('apActorFollowers', ['id' => $profile->getID()])];
foreach ($notice->getAttentionProfiles() as $to_profile) {
$cc[] = $href = $to_profile->getUri();
$tags[] = Activitypub_mention_tag::mention_tag_to_array_from_values($href, $to_profile->getNickname().'@'.parse_url($href, PHP_URL_HOST));
}
// In a world without walls and fences, we should make everything Public!
$to[]= 'https://www.w3.org/ns/activitystreams#Public';
$item = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'id' => common_local_url('apNotice', ['id' => $notice->getID()]),
'type' => 'Note',
'published' => str_replace(' ', 'T', $notice->getCreated()).'Z',
'url' => $notice->getUrl(),
'attributedTo' => ActivityPubPlugin::actor_uri($profile),
'to' => ['https://www.w3.org/ns/activitystreams#Public'],
'cc' => $cc,
'atomUri' => $notice->getUrl(),
'conversation' => $notice->getConversationUrl(),
'content' => $notice->getRendered(),
'isLocal' => $notice->isLocal(),
'attachment' => $attachments,
'tag' => $tags
];
// Is this a reply?
if (!empty($notice->reply_to)) {
$item['inReplyTo'] = common_local_url('apNotice', ['id' => $notice->getID()]);
$item['inReplyToAtomUri'] = Notice::getById($notice->reply_to)->getUrl();
}
// 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.
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param array $object
* @param Profile|null $actor_profile
* @return Notice
* @throws Exception
*/
public static function create_notice($object, $actor_profile = null)
{
$id = $object['id']; // int
$url = $object['url']; // 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'] = $object['longitude'];
}
// Ensure Actor Profile
if (is_null($actor_profile)) {
$actor_profile = ActivityPub_explorer::get_profile_from_url($object['actor']);
}
$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' => $url];
// Is this a reply?
if (isset($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 $tag) {
if ($tag['type'] == 'Mention') {
$mentions[] = $tag['href'];
}
}
}
$mentions_profiles = [];
$discovery = new Activitypub_explorer;
foreach ($mentions as $mention) {
try {
$mentions_profiles[] = $discovery->lookup($mention)[0];
} catch (Exception $e) {
// Invalid actor found, just let it go. // TODO: Fallback to OStatus
}
}
unset($discovery);
foreach ($mentions_profiles as $mp) {
$act->context->attention[ActivityPubPlugin::actor_uri($mp)] = '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.');
}*/
$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);
return $note;
}
/**
* Validates a note.
*
* @param array $object
* @return bool
* @throws Exception
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function validate_note($object)
{
if (!isset($object['attributedTo'])) {
common_debug('ActivityPub Notice Validator: Rejected because attributedTo was not specified.');
throw new Exception('No attributedTo specified.');
}
if (!isset($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['content'])) {
common_debug('ActivityPub Notice Validator: Rejected because Content was not specified.');
throw new Exception('Object content was not specified.');
}
if (!isset($object['url'])) {
throw new Exception('Object URL was not specified.');
} elseif (!filter_var($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['cc'])) {
common_debug('ActivityPub Notice Validator: Rejected because Object CC was not specified.');
throw new Exception('Object CC was not specified.');
}
return true;
}
}

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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
* @link http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub's Pending follow requests
*
* @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_pending_follow_requests extends Managed_DataObject
{
public $__table = 'activitypub_pending_follow_requests';
public $local_profile_id;
public $remote_profile_id;
private $_reldb = null;
/**
* Return table definition for Schema setup and DB_DataObject usage.
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @return array array of column definitions
*/
public static function schemaDef()
{
return [
'fields' => [
'local_profile_id' => ['type' => 'integer', 'not null' => true],
'remote_profile_id' => ['type' => 'integer', 'not null' => true],
'relation_id' => ['type' => 'serial', 'not null' => true],
],
'primary key' => ['relation_id'],
'foreign keys' => [
'activitypub_pending_follow_requests_local_profile_id_fkey' => ['profile', ['local_profile_id' => 'id']],
'activitypub_pending_follow_requests_remote_profile_id_fkey' => ['profile', ['remote_profile_id' => 'id']],
],
];
}
public function __construct($actor, $remote_actor)
{
$this->local_profile_id = $actor;
$this->remote_profile_id = $remote_actor;
}
/**
* Add Follow request to table.
*
* @return boolean true if added, false otherwise
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function add()
{
return !$this->exists() && $this->insert();
}
/**
* Check if a Follow request is pending.
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @return boolean true if is pending, false otherwise
*/
public function exists()
{
$this->_reldb = clone($this);
if ($this->_reldb->find() > 0) {
$this->_reldb->fetch();
return true;
}
return false;
}
/**
* Remove a request from the pending table.
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @return boolean true if removed, false otherwise
*/
public function remove()
{
return $this->exists() && $this->_reldb->delete();
}
}

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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
* @link http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub Profile
*
* @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_profile extends Managed_DataObject
{
public $__table = 'activitypub_profile';
public $uri; // text() not_null
public $profile_id; // int(4) primary_key not_null
public $inboxuri; // text() not_null
public $sharedInboxuri; // text()
public $nickname; // varchar(64) multiple_key not_null
public $fullname; // text()
public $profileurl; // text()
public $homepage; // text()
public $bio; // text() multiple_key
public $location; // text()
public $created; // datetime() not_null default_CURRENT_TIMESTAMP
public $modified; // datetime() not_null default_CURRENT_TIMESTAMP
/**
* Return table definition for Schema setup and DB_DataObject usage.
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @return array array of column definitions
*/
public static function schemaDef()
{
return [
'fields' => [
'uri' => ['type' => 'text', 'not null' => true],
'profile_id' => ['type' => 'integer'],
'inboxuri' => ['type' => 'text', 'not null' => true],
'sharedInboxuri' => ['type' => 'text'],
'created' => ['type' => 'datetime', 'not null' => true, 'default' => 'CURRENT_TIMESTAMP', 'description' => 'date this record was created'],
'modified' => ['type' => 'datetime', 'not null' => true, 'default' => 'CURRENT_TIMESTAMP', 'description' => 'date this record was modified'],
],
'primary key' => ['profile_id'],
'foreign keys' => [
'activitypub_profile_profile_id_fkey' => ['profile', ['profile_id' => 'id']],
],
];
}
/**
* Generates a pretty profile from a Profile object
*
* @param Profile $profile
* @return array array to be used in a response
* @throws InvalidUrlException
* @throws ServerException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function profile_to_array($profile)
{
$uri = ActivityPubPlugin::actor_uri($profile);
$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
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @access public
* @throws ServerException
*/
public function do_insert()
{
$profile = new Profile();
$profile->created = $this->created = $this->modified = common_sql_now();
$fields = [
'uri' => 'profileurl',
'nickname' => 'nickname',
'fullname' => 'fullname',
'bio' => 'bio'
];
foreach ($fields as $af => $pf) {
$profile->$pf = $this->$af;
}
$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
*
* @return Profile
* @throws NoProfileException if it was not found
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function local_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
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param Profile $profile
* @return Activitypub_profile
* @throws Exception if no Activitypub_profile exists for given Profile
*/
public static function from_profile(Profile $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.');
}
}
$fields = [
'uri' => 'profileurl',
'nickname' => 'nickname',
'fullname' => 'fullname',
'bio' => 'bio'
];
foreach ($fields as $af => $pf) {
$aprofile->$af = $profile->$pf;
}
return $aprofile;
}
/**
* 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
* @return Activitypub_profile
* @throws HTTP_Request2_Exception
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private static function create_from_local_profile(Profile $profile)
{
$aprofile = new Activitypub_profile();
$url = $profile->getUri();
$inboxes = Activitypub_explorer::get_actor_inboxes_uri($url);
if ($inboxes == null) {
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 $aprofile;
}
/**
* Returns sharedInbox if possible, inbox otherwise
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @return string Inbox URL
*/
public function get_inbox()
{
if (is_null($this->sharedInboxuri)) {
return $this->inboxuri;
}
return $this->sharedInboxuri;
}
/**
* Getter for uri property
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @return string URI
*/
public function getUri()
{
return $this->uri;
}
/**
* Getter for url property
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @return string URL
*/
public function getUrl()
{
return $this->getUri();
}
/**
* Getter for id property
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @return int
*/
public function getID()
{
return $this->profile_id;
}
/**
* Ensures a valid Activitypub_profile when provided with a valid URI.
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param string $url
* @return Activitypub_profile
* @throws Exception if it isn't possible to return an Activitypub_profile
*/
public static function fromUri($url)
{
try {
return self::from_profile(Activitypub_explorer::get_profile_from_url($url));
} 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.
*
* @author GNU social
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param string $addr webfinger address
* @return Activitypub_profile
* @throws Exception on error conditions
*/
public static function ensure_web_finger($addr)
{
// 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(
array('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 remote user profile in local instance
* Depends on do_update
*
* @param Activitypub_profile $aprofile
* @param array $res remote response
* @return Profile remote Profile object
* @throws Exception
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function update_profile($aprofile, $res)
{
// ActivityPub Profile
$aprofile->uri = $res['id'];
$aprofile->nickname = $res['preferredUsername'];
$aprofile->fullname = isset($res['name']) ? $res['name'] : null;
$aprofile->bio = isset($res['summary']) ? substr(strip_tags($res['summary']), 0, 1000) : null;
$aprofile->inboxuri = $res['inbox'];
$aprofile->sharedInboxuri = isset($res['endpoints']['sharedInbox']) ? $res['endpoints']['sharedInbox'] : $res['inbox'];
$profile = $aprofile->local_profile();
$profile->modified = $aprofile->modified = common_sql_now();
$fields = [
'uri' => 'profileurl',
'nickname' => 'nickname',
'fullname' => 'fullname',
'bio' => 'bio'
];
foreach ($fields as $af => $pf) {
$profile->$pf = $aprofile->$af;
}
// Profile
$profile->update();
$aprofile->update();
// Public Key
Activitypub_rsa::update_public_key($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;
}
}

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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
* @link 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 extends Managed_DataObject
{
/**
* Generates an ActivityPub representation of a Reject
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param array $object
* @return array pretty array to be used in a response
*/
public static function reject_to_array($object)
{
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'type' => 'Reject',
'object' => $object
];
return $res;
}
}

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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
* @link http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
/**
* ActivityPub Keys System
*
* @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_rsa extends Managed_DataObject
{
public $__table = 'activitypub_rsa';
public $profile_id; // int(4) primary_key not_null
public $private_key; // text() not_null
public $public_key; // text() not_null
public $created; // datetime() not_null default_CURRENT_TIMESTAMP
public $modified; // datetime() not_null default_CURRENT_TIMESTAMP
/**
* Return table definition for Schema setup and DB_DataObject usage.
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @return array array of column definitions
*/
public static function schemaDef()
{
return [
'fields' => [
'profile_id' => ['type' => 'integer'],
'private_key' => ['type' => 'text'],
'public_key' => ['type' => 'text', 'not null' => true],
'created' => ['type' => 'datetime', 'not null' => true, 'default' => 'CURRENT_TIMESTAMP', 'description' => 'date this record was created'],
'modified' => ['type' => 'datetime', 'not null' => true, 'default' => 'CURRENT_TIMESTAMP', 'description' => 'date this record was modified'],
],
'primary key' => ['profile_id'],
'foreign keys' => [
'activitypub_profile_profile_id_fkey' => ['profile', ['profile_id' => 'id']],
],
];
}
public function get_private_key($profile)
{
$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();
} 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 $fetch
* @return string The public key
* @throws ServerException It should never occur, but if so, we break everything!
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function ensure_public_key($profile, $fetch = true)
{
$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);
$this->store_keys();
} else {
// This should never happen, but try to recover!
if ($fetch) {
$res = Activitypub_explorer::get_remote_user_activity(ActivityPubPlugin::actor_uri($profile));
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.
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @access public
* @throws ServerException
*/
public function store_keys()
{
$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.
*
* @author PHP Manual Contributed Notes <dirt@awoms.com>
* @param string $private_key in/out
* @param string $public_key in/out
*/
public static function generate_keys(&$private_key, &$public_key)
{
$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 Profile $profile
* @param string $public_key
* @throws Exception
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function update_public_key($profile, $public_key)
{
// Public Key
$apRSA = new Activitypub_rsa();
$apRSA->profile_id = $profile->getID();
$apRSA->public_key = $public_key;
$apRSA->modified = common_sql_now();
if (!$apRSA->update()) {
$apRSA->insert();
}
}
}

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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
* @link 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 extends Managed_DataObject
{
/**
* Generates a pretty tag from a Tag object
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param array Tag $tag
* @return array pretty array to be used in a response
*/
public static function tag_to_array($tag)
{
$res = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'name' => $tag,
'url' => common_local_url('tag', ['tag' => $tag])
];
return $res;
}
}

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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
* @link 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 extends Managed_DataObject
{
/**
* Generates an ActivityPub representation of a Undo
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param array $object
* @return array pretty array to be used in a response
*/
public static function undo_to_array($object)
{
$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 $object
* @return bool
* @throws Exception
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function validate_object($object)
{
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;
}
}

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<!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>

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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 |

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{
"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": []
}

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<?php
/**
* Note : Code is released under the GNU LGPL
*
* Please do not change the header of this file
*
* This library is free software; you can redistribute it and/or modify it under the terms of the GNU
* Lesser General Public License as published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This library 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 Lesser General Public License for more details.
*/
/**
* The AcceptHeader page will parse and sort the different
* allowed types for the content negociations
*
* @author Pierrick Charron <pierrick@webstart.fr>
*/
class AcceptHeader extends \ArrayObject
{
/**
* Constructor
*
* @param string $header Value of the Accept header
* @return void
*/
public function __construct($header)
{
$acceptedTypes = $this->_parse($header);
usort($acceptedTypes, [$this, '_compare']);
parent::__construct($acceptedTypes);
}
/**
* Parse the accept header and return an array containing
* all the informations about the Accepted types
*
* @param string $data Value of the Accept header
* @return array
*/
private function _parse($data)
{
$array = [];
$items = explode(',', $data);
foreach ($items as $item) {
$elems = explode(';', $item);
$acceptElement = [];
$mime = current($elems);
list($type, $subtype) = explode('/', $mime);
$acceptElement['type'] = trim($type);
$acceptElement['subtype'] = trim($subtype);
$acceptElement['raw'] = $mime;
$acceptElement['params'] = [];
while (next($elems)) {
list($name, $value) = explode('=', current($elems));
$acceptElement['params'][trim($name)] = trim($value);
}
$array[] = $acceptElement;
}
return $array;
}
/**
* Compare two Accepted types with their parameters to know
* if one media type should be used instead of an other
*
* @param array $a The first media type and its parameters
* @param array $b The second media type and its parameters
* @return int
*/
private function _compare($a, $b)
{
$a_q = isset($a['params']['q']) ? floatval($a['params']['q']) : 1.0;
$b_q = isset($b['params']['q']) ? floatval($b['params']['q']) : 1.0;
if ($a_q === $b_q) {
$a_count = count($a['params']);
$b_count = count($b['params']);
if ($a_count === $b_count) {
if ($r = $this->_compareSubType($a['subtype'], $b['subtype'])) {
return $r;
} else {
return $this->_compareSubType($a['type'], $b['type']);
}
} else {
return $a_count < $b_count;
}
} else {
return $a_q < $b_q;
}
}
/**
* Compare two subtypes
*
* @param string $a First subtype to compare
* @param string $b Second subtype to compare
* @return int
*/
private function _compareSubType($a, $b)
{
if ($a === '*' && $b !== '*') {
return 1;
} elseif ($b === '*' && $a !== '*') {
return -1;
} else {
return 0;
}
}
}

98
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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
* @link 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;
}
}
}

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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 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
* @link http://www.gnu.org/software/social/
*/
defined('GNUSOCIAL') || die();
class DiscoveryHints
{
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(),
$response->getEffectiveUrl()
);
}
public static function hcardHints($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 $hints;
}
public static function _hcard($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;
}
}

482
plugins/ActivityPub/lib/explorer.php Normal file
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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
* @link 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.
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param string $url
* @return Profile
* @throws Exception
*/
public static function get_profile_from_url($url)
{
$discovery = new Activitypub_explorer;
// Get valid Actor object
$actor_profile = $discovery->lookup($url);
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 $url User's url
* @return array of Profile objects
* @throws HTTP_Request2_Exception
* @throws NoProfileException
* @throws ServerException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function lookup($url)
{
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);
}
/**
* Get every profile from the given URL
* This is a recursive function that will accumulate the results on
* $discovered_actor_profiles array
*
* @param string $url User's url
* @return array of Profile objects
* @throws HTTP_Request2_Exception
* @throws NoProfileException
* @throws ServerException
* @throws Exception
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function _lookup($url)
{
// First check if we already have it locally and, if so, return it
// If the local fetch fails: grab it remotely, store locally and return
if (! ($this->grab_local_user($url) || $this->grab_remote_user($url))) {
throw new Exception('User not found.');
}
return $this->discovered_actor_profiles;
}
/**
* This ensures that we are using a valid ActivityPub URI
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param string $url
* @return boolean success state (related to the response)
* @throws Exception (If the HTTP request fails)
*/
private function ensure_proper_remote_uri($url)
{
$client = new HTTPClient();
$headers = [];
$headers[] = 'Accept: application/ld+json; profile="https://www.w3.org/ns/activitystreams"';
$headers[] = 'User-Agent: GNUSocialBot v0.1 - https://gnu.io/social';
$response = $client->get($url, $headers);
$res = json_decode($response->getBody(), true);
if (self::validate_remote_response($res)) {
$this->temp_res = $res;
return true;
} else {
common_debug('ActivityPub Explorer: Invalid potential remote actor while ensuring URI: '.$url. '. He returned the following: '.json_encode($res, JSON_UNESCAPED_SLASHES));
}
return false;
}
/**
* Get a local user profile from its URL and joins it on
* $this->discovered_actor_profiles
*
* @param string $uri Actor's uri
* @param bool $online
* @return boolean success state
* @throws NoProfileException
* @throws Exception
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function grab_local_user($uri, $online = false)
{
if ($online) {
common_debug('ActivityPub Explorer: Searching locally for '.$uri. ' with online resources.');
} else {
common_debug('ActivityPub Explorer: Searching locally for '.$uri. ' offline.');
}
// Ensure proper remote URI
// If an exception occurs here it's better to just leave everything
// break than to continue processing
if ($online && $this->ensure_proper_remote_uri($uri)) {
$uri = $this->temp_res["id"];
}
// Try standard ActivityPub route
// Is this a known filthy little mudblood?
$aprofile = self::get_aprofile_by_url($uri);
if ($aprofile instanceof Activitypub_profile) {
$profile = $aprofile->local_profile();
common_debug('ActivityPub Explorer: Found a local Aprofile for '.$uri);
// We found something!
$this->discovered_actor_profiles[]= $profile;
unset($this->temp_res); // IMPORTANT to avoid _dangerous_ noise in the Explorer system
return true;
} else {
common_debug('ActivityPub Explorer: Unable to find a local Aprofile for '.$uri.' - looking for a Profile instead.');
// Well, maybe it is a pure blood?
// Iff, we are in the same instance:
$ACTIVITYPUB_BASE_ACTOR_URI_length = strlen(ACTIVITYPUB_BASE_ACTOR_URI);
if (substr($uri, 0, $ACTIVITYPUB_BASE_ACTOR_URI_length) == ACTIVITYPUB_BASE_ACTOR_URI) {
try {
$profile = Profile::getByID(intval(substr($uri, $ACTIVITYPUB_BASE_ACTOR_URI_length)));
common_debug('ActivityPub Explorer: Found a Profile for '.$uri);
// We found something!
$this->discovered_actor_profiles[]= $profile;
unset($this->temp_res); // IMPORTANT to avoid _dangerous_ noise in the Explorer system
return true;
} catch (Exception $e) {
// Let the exception go on its merry way.
common_debug('ActivityPub Explorer: Unable to find a Profile for '.$uri);
}
}
}
// 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 $url User's url
* @return boolean success state
* @throws HTTP_Request2_Exception
* @throws NoProfileException
* @throws ServerException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function grab_remote_user($url)
{
common_debug('ActivityPub Explorer: Trying to grab a remote actor for '.$url);
if (!isset($this->temp_res)) {
$client = new HTTPClient();
$headers = [];
$headers[] = 'Accept: application/ld+json; profile="https://www.w3.org/ns/activitystreams"';
$headers[] = 'User-Agent: GNUSocialBot v0.1 - https://gnu.io/social';
$response = $client->get($url, $headers);
$res = json_decode($response->getBody(), true);
} else {
$res = $this->temp_res;
unset($this->temp_res);
}
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));
}
// TODO: Fallback to OStatus
return false;
}
/**
* Save remote user profile in local instance
*
* @param array $res remote response
* @return Profile remote Profile object
* @throws NoProfileException
* @throws ServerException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function store_profile($res)
{
// ActivityPub Profile
$aprofile = new Activitypub_profile;
$aprofile->uri = $res['id'];
$aprofile->nickname = $res['preferredUsername'];
$aprofile->fullname = isset($res['name']) ? $res['name'] : null;
$aprofile->bio = isset($res['summary']) ? substr(strip_tags($res['summary']), 0, 1000) : null;
$aprofile->inboxuri = $res['inbox'];
$aprofile->sharedInboxuri = isset($res['endpoints']['sharedInbox']) ? $res['endpoints']['sharedInbox'] : $res['inbox'];
$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;
}
/**
* Download and update given avatar image
*
* @author GNU social
* @param Profile $profile
* @param string $url
* @return Avatar The Avatar we have on disk.
* @throws Exception in various failure cases
*/
public static function update_avatar(Profile $profile, $url)
{
common_debug('ActivityPub Explorer: Started grabbing remote avatar from: '.$url);
if (!filter_var($url, FILTER_VALIDATE_URL)) {
// TRANS: Server exception. %s is a URL.
common_debug('ActivityPub Explorer: Failed because it is an invalid url: '.$url);
throw new ServerException(sprintf('Invalid avatar URL %s.', $url));
}
// @todo FIXME: This should be better encapsulated
// ripped from oauthstore.php (for old OMB client)
$temp_filename = tempnam(sys_get_temp_dir(), 'listener_avatar');
try {
$imgData = HTTPClient::quickGet($url);
// Make sure it's at least an image file. ImageFile can do the rest.
if (false === getimagesizefromstring($imgData)) {
common_debug('ActivityPub Explorer: Failed because the downloaded avatar: '.$url. 'is not a valid image.');
throw new UnsupportedMediaException('Downloaded avatar was not an image.');
}
file_put_contents($temp_filename, $imgData);
unset($imgData); // No need to carry this in memory.
common_debug('ActivityPub Explorer: Stored dowloaded avatar in: '.$temp_filename);
$id = $profile->getID();
$imagefile = new ImageFile(null, $temp_filename);
$filename = Avatar::filename(
$id,
image_type_to_extension($imagefile->type),
null,
common_timestamp()
);
rename($temp_filename, Avatar::path($filename));
common_debug('ActivityPub Explorer: Moved avatar from: '.$temp_filename.' to '.$filename);
} catch (Exception $e) {
common_debug('ActivityPub Explorer: Something went wrong while processing the avatar from: '.$url.' details: '.$e->getMessage());
unlink($temp_filename);
throw $e;
}
// @todo FIXME: Hardcoded chmod is lame, but seems to be necessary to
// keep from accidentally saving images from command-line (queues)
// that can't be read from web server, which causes hard-to-notice
// problems later on:
//
// http://status.net/open-source/issues/2663
chmod(Avatar::path($filename), 0644);
$profile->setOriginal($filename);
$orig = clone($profile);
$profile->avatar = $url;
$profile->update($orig);
common_debug('ActivityPub Explorer: Seted Avatar from: '.$url.' to profile.');
return Avatar::getUploaded($profile);
}
/**
* Validates a remote response in order to determine whether this
* response is a valid profile or not
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param array $res remote response
* @return boolean success state
*/
public static function validate_remote_response($res)
{
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)
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param string $v URL
* @return boolean|Activitypub_profile false if fails | Aprofile object if successful
*/
public static function get_aprofile_by_url($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 $url of Actor profile
* @return boolean|array false if fails | array with inbox and shared inbox if successful
* @throws HTTP_Request2_Exception
* @throws Exception
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function get_actor_inboxes_uri($url)
{
$client = new HTTPClient();
$headers = [];
$headers[] = 'Accept: application/ld+json; profile="https://www.w3.org/ns/activitystreams"';
$headers[] = 'User-Agent: GNUSocialBot v0.1 - https://gnu.io/social';
$response = $client->get($url, $headers);
if (!$response->isOk()) {
throw new Exception('Invalid Actor URL.');
}
$res = json_decode($response->getBody(), true);
if (self::validate_remote_response($res)) {
return [
'inbox' => $res['inbox'],
'sharedInbox' => isset($res['endpoints']['sharedInbox']) ? $res['endpoints']['sharedInbox'] : $res['inbox']
];
}
return false;
}
/**
* Allows the Explorer to transverse a collection of persons.
*
* @param string $url
* @return boolean
* @throws HTTP_Request2_Exception
* @throws NoProfileException
* @throws ServerException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function travel_collection($url)
{
$client = new HTTPClient();
$headers = [];
$headers[] = 'Accept: application/ld+json; profile="https://www.w3.org/ns/activitystreams"';
$headers[] = 'User-Agent: GNUSocialBot v0.1 - https://gnu.io/social';
$response = $client->get($url, $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"])) {
$this->_lookup($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 $url User's url
* @return mixed
* @throws Exception
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public static function get_remote_user_activity($url)
{
$client = new HTTPClient();
$headers = [];
$headers[] = 'Accept: application/ld+json; profile="https://www.w3.org/ns/activitystreams"';
$headers[] = 'User-Agent: GNUSocialBot v0.1 - https://gnu.io/social';
$response = $client->get($url, $headers);
$res = json_decode($response->getBody(), true);
if (Activitypub_explorer::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.');
}
}

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<?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
* @link https://github.com/aaronpk/Nautilus/blob/master/app/ActivityPub/HTTPSignature.php
*/
class HttpSignature
{
public static function sign($user, $url, $body = false, $addlHeaders = [])
{
$digest = false;
if ($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();
$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);
$signatureHeader = 'keyId="' . ActivityPubPlugin::actor_uri($user).'#public-key' . '",headers="' . $signedHeaders . '",algorithm="rsa-sha256",signature="' . $signature . '"';
unset($headers['(request-target)']);
$headers['Signature'] = $signatureHeader;
return self::_headersToCurlArray($headers);
}
private static function _digest($body)
{
if (is_array($body)) {
$body = json_encode($body);
}
return base64_encode(hash('sha256', $body, true));
}
protected static function _headersToSign($url, $digest = false)
{
$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 - https://gnu.io/social',
'Content-Type' => 'application/activity+json'
];
if ($digest) {
$headers['Digest'] = 'SHA-256=' . $digest;
}
return $headers;
}
private static function _headersToSigningString($headers)
{
return implode("\n", array_map(function ($k, $v) {
return strtolower($k) . ': ' . $v;
}, array_keys($headers), $headers));
}
private static function _headersToCurlArray($headers)
{
return array_map(function ($k, $v) {
return "$k: $v";
}, array_keys($headers), $headers);
}
public static function parseSignatureHeader($signature)
{
$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 $signatureData;
}
public static function verify($publicKey, $signatureData, $inputHeaders, $path, $body)
{
$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] = $digest;
} elseif (isset($inputHeaders[$h][0])) {
$headersToSign[$h] = $inputHeaders[$h];
}
}
$signingString = self::_headersToSigningString($headersToSign);
$verified = openssl_verify($signingString, base64_decode($signatureData['signature']), $publicKey, OPENSSL_ALGO_SHA256);
return [$verified, $signingString];
}
}

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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
* @link 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
$this->validate_activity();
// Get Actor's Profile
if (!is_null($actor_profile)) {
$this->actor = $actor_profile;
} else {
$this->actor = ActivityPub_explorer::get_profile_from_url($this->activity['actor']);
}
// Handle the Activity
$this->process();
}
/**
* Validates if a given Activity is valid. Throws exception if not.
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @throws Exception
*/
private function validate_activity()
{
// Activity validation
// Validate data
if (!(isset($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
switch ($this->activity['type']) {
case 'Accept':
Activitypub_accept::validate_object($this->object);
break;
case 'Create':
Activitypub_create::validate_object($this->object);
break;
case 'Delete':
case 'Follow':
case 'Like':
case 'Announce':
if (!filter_var($this->object, FILTER_VALIDATE_URL)) {
throw new Exception('Object is not a valid Object URI for Activity.');
}
break;
case 'Undo':
Activitypub_undo::validate_object($this->object);
break;
default:
throw new Exception('Unknown Activity Type.');
}
}
/**
* Sends the Activity to proper handler in order to be processed.
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function process()
{
switch ($this->activity['type']) {
case 'Accept':
$this->handle_accept($this->actor, $this->object);
break;
case 'Create':
$this->handle_create($this->actor, $this->object);
break;
case 'Delete':
$this->handle_delete($this->actor, $this->object);
break;
case 'Follow':
$this->handle_follow($this->actor, $this->object);
break;
case 'Like':
$this->handle_like($this->actor, $this->object);
break;
case 'Undo':
$this->handle_undo($this->actor, $this->object);
break;
case 'Announce':
$this->handle_announce($this->actor, $this->object);
break;
}
}
/**
* Handles an Accept Activity received by our inbox.
*
* @param Profile $actor Actor
* @param array $object Activity
* @throws HTTP_Request2_Exception
* @throws NoProfileException
* @throws ServerException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function handle_accept($actor, $object)
{
switch ($object['type']) {
case 'Follow':
$this->handle_accept_follow($actor, $object);
break;
}
}
/**
* Handles an Accept Follow Activity received by our inbox.
*
* @param Profile $actor Actor
* @param array $object Activity
* @throws HTTP_Request2_Exception
* @throws NoProfileException
* @throws ServerException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function handle_accept_follow($actor, $object)
{
// Get valid Object profile
$object_profile = new Activitypub_explorer;
$object_profile = $object_profile->lookup($object['object'])[0];
$pending_list = new Activitypub_pending_follow_requests($actor->getID(), $object_profile->getID());
$pending_list->remove();
}
/**
* Handles a Create Activity received by our inbox.
*
* @param Profile $actor Actor
* @param array $object Activity
* @throws Exception
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function handle_create($actor, $object)
{
switch ($object['type']) {
case 'Note':
Activitypub_notice::create_notice($object, $actor);
break;
}
}
/**
* Handles a Delete Activity received by our inbox.
*
* @param Profile $actor Actor
* @param array $object Activity
* @throws AuthorizationException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function handle_delete($actor, $object)
{
$notice = ActivityPubPlugin::grab_notice_from_url($object['object']);
$notice->deleteAs($actor);
}
/**
* Handles a Follow Activity received by our inbox.
*
* @param Profile $actor Actor
* @param array $object Activity
* @throws AlreadyFulfilledException
* @throws HTTP_Request2_Exception
* @throws NoProfileException
* @throws ServerException
* @throws \GuzzleHttp\Exception\GuzzleException
* @throws \HttpSignatures\Exception
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function handle_follow($actor, $object)
{
Activitypub_follow::follow($actor, $object);
}
/**
* Handles a Like Activity received by our inbox.
*
* @param Profile $actor Actor
* @param array $object Activity
* @throws Exception
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function handle_like($actor, $object)
{
$notice = ActivityPubPlugin::grab_notice_from_url($object);
Fave::addNew($actor, $notice);
}
/**
* Handles a Undo Activity received by our inbox.
*
* @param Profile $actor Actor
* @param array $object Activity
* @throws AlreadyFulfilledException
* @throws HTTP_Request2_Exception
* @throws NoProfileException
* @throws ServerException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function handle_undo($actor, $object)
{
switch ($object['type']) {
case 'Follow':
$this->handle_undo_follow($actor, $object['object']);
break;
case 'Like':
$this->handle_undo_like($actor, $object['object']);
break;
}
}
/**
* Handles a Undo Like Activity received by our inbox.
*
* @param Profile $actor Actor
* @param array $object Activity
* @throws AlreadyFulfilledException
* @throws ServerException
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
private function handle_undo_like($actor, $object)
{
$notice = ActivityPubPlugin::grab_notice_from_url($object);
Fave::removeEntry($actor, $notice);
}
/**
* Handles a Undo Follow Activity received by our inbox.
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param Profile $actor Actor
* @param array $object Activity
* @throws AlreadyFulfilledException
* @throws HTTP_Request2_Exception
* @throws NoProfileException
* @throws ServerException
*/
private function handle_undo_follow($actor, $object)
{
// Get Object profile
$object_profile = new Activitypub_explorer;
$object_profile = $object_profile->lookup($object)[0];
if (Subscription::exists($actor, $object_profile)) {
Subscription::cancel($actor, $object_profile);
// You are no longer following this person.
} else {
// 409: You are not following this person already.
}
}
/**
* Handles a Announce Activity received by our inbox.
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param Profile $actor Actor
* @param array $object Activity
* @throws Exception
*/
private function handle_announce($actor, $object)
{
$object_notice = ActivityPubPlugin::grab_notice_from_url($object);
$object_notice->repeat($actor, 'ActivityPub');
}
}

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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
* @link 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 $client;
private $headers;
/**
* Create a postman to deliver something to someone
*
* @param Profile $from Profile of sender
* @param $to
* @throws Exception
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function __construct($from, $to)
{
$this->actor = $from;
$discovery = new Activitypub_explorer();
$this->to = $to;
$followers = apActorFollowersAction::generate_followers($this->actor, 0, null);
foreach ($followers as $sub) {
try {
$to[]= Activitypub_profile::from_profile($discovery->lookup($sub)[0]);
} catch (Exception $e) {
// Not an ActivityPub Remote Follower, let it go
}
}
unset($discovery);
$this->actor_uri = ActivityPubPlugin::actor_uri($this->actor);
$this->client = new HTTPClient();
}
/**
* Send something to remote instance
*
* @param string $data request body
* @param string $inbox url of remote inbox
* @param string $method request method
* @return GNUsocial_HTTPResponse
* @throws HTTP_Request2_Exception
* @throws Exception
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function send($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
*
* @return bool
* @throws HTTP_Request2_Exception
* @throws Exception
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function follow()
{
$data = Activitypub_follow::follow_to_array(ActivityPubPlugin::actor_uri($this->actor), $this->to[0]->getUrl());
$res = $this->send(json_encode($data, JSON_UNESCAPED_SLASHES), $this->to[0]->get_inbox());
$res_body = json_decode($res->getBody());
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[0]->error)) {
throw new Exception($res_body[0]->error);
}
throw new Exception("An unknown error occurred.");
}
/**
* Send a Undo Follow notification to remote instance
*
* @return bool
* @throws HTTP_Request2_Exception
* @throws Exception
* @throws Exception
* @throws Exception
* @throws Exception
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function undo_follow()
{
$data = Activitypub_undo::undo_to_array(
Activitypub_follow::follow_to_array(
ActivityPubPlugin::actor_uri($this->actor),
$this->to[0]->getUrl()
)
);
$res = $this->send(json_encode($data, JSON_UNESCAPED_SLASHES), $this->to[0]->get_inbox());
$res_body = json_decode($res->getBody());
if ($res->getStatus() == 200 || $res->getStatus() == 202 || $res->getStatus() == 409) {
$pending_list = new Activitypub_pending_follow_requests($this->actor->getID(), $this->to[0]->getID());
$pending_list->remove();
return true;
}
if (isset($res_body[0]->error)) {
throw new Exception($res_body[0]->error);
}
throw new Exception("An unknown error occurred.");
}
/**
* Send a Accept Follow notification to remote instance
*
* @return bool
* @throws HTTP_Request2_Exception
* @throws Exception
* @throws Exception
* @throws Exception
* @throws Exception
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function accept_follow()
{
$data = Activitypub_accept::accept_to_array(
Activitypub_follow::follow_to_array(
$this->to[0]->getUrl(),
ActivityPubPlugin::actor_uri($this->actor)
)
);
$res = $this->send(json_encode($data, JSON_UNESCAPED_SLASHES), $this->to[0]->get_inbox());
$res_body = json_decode($res->getBody());
if ($res->getStatus() == 200 || $res->getStatus() == 202 || $res->getStatus() == 409) {
$pending_list = new Activitypub_pending_follow_requests($this->actor->getID(), $this->to[0]->getID());
$pending_list->remove();
return true;
}
if (isset($res_body[0]->error)) {
throw new Exception($res_body[0]->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)
{
$data = Activitypub_like::like_to_array(
ActivityPubPlugin::actor_uri($this->actor),
$notice->getUrl()
);
$data = json_encode($data, JSON_UNESCAPED_SLASHES);
foreach ($this->to_inbox() as $inbox) {
$this->send($data, $inbox);
}
}
/**
* 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)
{
$data = Activitypub_undo::undo_to_array(
Activitypub_like::like_to_array(
ActivityPubPlugin::actor_uri($this->actor),
$notice->getUrl()
)
);
$data = json_encode($data, JSON_UNESCAPED_SLASHES);
foreach ($this->to_inbox() as $inbox) {
$this->send($data, $inbox);
}
}
/**
* 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(
$this->actor_uri,
Activitypub_notice::notice_to_array($notice)
);
$data = json_encode($data, JSON_UNESCAPED_SLASHES);
foreach ($this->to_inbox() as $inbox) {
$this->send($data, $inbox);
}
}
/**
* 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)
{
$data = Activitypub_announce::announce_to_array(
ActivityPubPlugin::actor_uri($this->actor),
$notice->getUri()
);
$data = json_encode($data, JSON_UNESCAPED_SLASHES);
foreach ($this->to_inbox() as $inbox) {
$this->send($data, $inbox);
}
}
/**
* Send a Delete notification to remote instances holding the notice
*
* @param Notice $notice
* @throws HTTP_Request2_Exception
* @throws InvalidUrlException
* @throws Exception
* @throws Exception
* @author Diogo Cordeiro <diogo@fc.up.pt>
*/
public function delete($notice)
{
$data = Activitypub_delete::delete_to_array(
ActivityPubPlugin::actor_uri($notice->getProfile()),
$notice->getUrl()
);
$errors = [];
$data = json_encode($data, JSON_UNESCAPED_SLASHES);
foreach ($this->to_inbox() as $inbox) {
$res = $this->send($data, $inbox);
if (!$res->getStatus() == 200) {
$res_body = json_decode($res->getBody(), true);
if (isset($res_body[0]['error'])) {
$errors[] = ($res_body[0]['error']);
continue;
}
$errors[] = ("An unknown error occurred.");
}
}
if (!empty($errors)) {
throw new Exception(json_encode($errors));
}
}
/**
* Clean list of inboxes to deliver messages
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @return array To Inbox URLs
*/
private function to_inbox()
{
$to_inboxes = [];
foreach ($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);
}
}

51
plugins/ActivityPub/locale/ActivityPub.pot Normal file
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@ -0,0 +1,51 @@
# SOME DESCRIPTIVE TITLE.
# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
# This file is distributed under the same license as the PACKAGE package.
# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
#
#, fuzzy
msgid ""
msgstr ""
"Project-Id-Version: PACKAGE VERSION\n"
"Report-Msgid-Bugs-To: \n"
"POT-Creation-Date: 2019-06-12 01:23+0100\n"
"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
"Language-Team: LANGUAGE <LL@li.org>\n"
"Language: \n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=CHARSET\n"
"Content-Transfer-Encoding: 8bit\n"
#. TRANS: Plugin description.
#: ActivityPubPlugin.php:212
msgid ""
"Follow people across social networks that implement <a href=\"https://"
"activitypub.rocks/\">ActivityPub</a>."
msgstr ""
#: ActivityPubPlugin.php:254
msgid "Remote Profile"
msgstr ""
#. TRANS: Title. %s is a domain name.
#: ActivityPubPlugin.php:909
#, php-format
msgid "Sent from %s via ActivityPub"
msgstr ""
#. TRANS: Exception.
#: classes/Activitypub_profile.php:355
msgid "Not a valid webfinger address (via cache)."
msgstr ""
#. TRANS: Exception.
#: classes/Activitypub_profile.php:376
msgid "Not a valid webfinger address."
msgstr ""
#. TRANS: Exception. %s is a webfinger address.
#: classes/Activitypub_profile.php:416
#, php-format
msgid "Could not find a valid profile for \"%s\"."
msgstr ""

54
plugins/ActivityPub/locale/en_GB/LC_MESSAGES/ActivityPub.po Normal file
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# 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 Normal file
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@ -0,0 +1,54 @@
# 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 Normal file
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@ -0,0 +1,54 @@
# 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 Normal file
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<?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>

104
plugins/ActivityPub/scripts/update_activitypub_profiles.php Executable file
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#!/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
* @link http://www.gnu.org/software/social/
*/
define('INSTALLDIR', realpath(__DIR__ . '/../../..'));
$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';
$quiet = have_option('q', 'quiet');
if (!$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');
$discovery = new Activitypub_explorer();
$discovery = $discovery->lookup($uri);
if (empty($discovery)) {
echo "Bad URI\n";
exit(1);
}
$user = $discovery->lookup($uri)[0];
try {
$res = Activitypub_explorer::get_remote_user_activity($uri);
} catch (Exception $e) {
echo $e->getMessage()."\n";
exit(1);
}
if (!$quiet) {
echo "Updated ".Activitypub_profile::update_profile($user, $res)->getBestName()."\n";
}
} elseif (!have_option('a', 'all')) {
show_help();
exit(1);
}
$user = new Activitypub_profile();
$cnt = $user->find();
if (!empty($cnt)) {
if (!$quiet) {
echo "Found {$cnt} ActivityPub profiles:\n";
}
} else {
if (have_option('u', 'uri')) {
if (!$quiet) {
echo "Couldn't find an existing ActivityPub profile with that URI.\n";
}
} else {
if (!$quiet) {
echo "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, $res);
if (!$quiet) {
echo "Updated ".$updated_profile->getBestName()."\n";
}
} catch (Exception $e) {
// let it go
}
}

52
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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
* @link http://www.gnu.org/software/social/
*/
namespace Tests;
trait CreatesApplication
{
/**
* Creates the application.
*
* @return todo
*/
public static function createApplication()
{
if (!defined('INSTALLDIR')) {
define('INSTALLDIR', __DIR__ . '/../../../');
}
if (!defined('GNUSOCIAL')) {
define('GNUSOCIAL', true);
}
if (!defined('STATUSNET')) {
define('STATUSNET', true); // compatibility
}
require INSTALLDIR . '/lib/common.php';
return true;
}
}

39
plugins/ActivityPub/tests/TestCase.php Normal file
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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
* @link http://www.gnu.org/software/social/
*/
namespace Tests;
use PHPUnit\Framework\TestCase as BaseTestCase;
abstract class TestCase extends BaseTestCase
{
use CreatesApplication;
protected function setUp()
{
$this->createApplication();
}
}

67
plugins/ActivityPub/tests/Unit/AcceptHeaderTest.php Normal file
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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
* @link http://www.gnu.org/software/social/
*/
require 'AcceptHeader.php';
class ContainerTest extends \PHPUnit_Framework_TestCase
{
public function testHeader1()
{
$acceptHeader = new AcceptHeader('audio/*; q=0.2, audio/basic');
$this->assertEquals('audio/basic', $this->_getMedia($acceptHeader[0]));
$this->assertEquals('audio/*; q=0.2', $this->_getMedia($acceptHeader[1]));
}
public function testHeader2()
{
$acceptHeader = new AcceptHeader('text/*;q=0.3, text/html;q=0.7, text/html;level=1, text/html;level=2;q=0.4, */*;q=0.5');
$this->assertEquals('text/html; level=1', $this->_getMedia($acceptHeader[0]));
$this->assertEquals('text/html; q=0.7', $this->_getMedia($acceptHeader[1]));
$this->assertEquals('*/*; q=0.5', $this->_getMedia($acceptHeader[2]));
$this->assertEquals('text/html; level=2; q=0.4', $this->_getMedia($acceptHeader[3]));
$this->assertEquals('text/*; q=0.3', $this->_getMedia($acceptHeader[4]));
}
public function testHeader3()
{
$acceptHeader = new AcceptHeader('text/*, text/html, text/html;level=1, */*');
$this->assertEquals('text/html; level=1', $this->_getMedia($acceptHeader[0]));
$this->assertEquals('text/html', $this->_getMedia($acceptHeader[1]));
$this->assertEquals('text/*', $this->_getMedia($acceptHeader[2]));
$this->assertEquals('*/*', $this->_getMedia($acceptHeader[3]));
}
private function _getMedia(array $mediaType)
{
$str = $mediaType['type'] . '/' . $mediaType['subtype'];
if (!empty($mediaType['params'])) {
foreach ($mediaType['params'] as $k => $v) {
$str .= '; ' . $k . '=' . $v;
}
}
return $str;
}
}

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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
* @link http://www.gnu.org/software/social/
*/
namespace Tests\Unit;
use Tests\TestCase;
class ProfileObjectTest extends TestCase
{
public function testLibraryInstalled()
{
$this->assertTrue(class_exists('\Activitypub_profile'));
}
public function testActivitypubProfile()
{
// Mimic proper ACCEPT header
$_SERVER['HTTP_ACCEPT'] = 'application/ld+json; profile="https://www.w3.org/ns/activitystreams';
/* Test do_insert() */
$aprofile = new \Activitypub_profile();
$aprofile->uri = 'https://testinstance.net/index.php/user/1';
$aprofile->nickname = 'test1';
$aprofile->fullname = 'Test User 1';
$aprofile->bio = 'I am a nice test 1 guy';
$aprofile->inboxuri = "https://testinstance.net/index.php/user/1/inbox.json";
$aprofile->sharedInboxuri = "https://testinstance.net/inbox.json";
$aprofile->do_insert();
/* Test local_profile() */
$profile = $aprofile->local_profile();
/* Test from_profile() and create_from_local_profile() */
$this->assertTrue($this->compare_aprofiles($aprofile, \Activitypub_profile::from_profile($profile)));
/* Create Keys for Test User 1 */
$apRSA = new \Activitypub_rsa();
$apRSA->profile_id = $profile->getID();
\Activitypub_rsa::generate_keys($apRSA->private_key, $apRSA->public_key);
$apRSA->store_keys();
/* Test profile_to_array() */
// Fetch ActivityPub Actor Object representation
$profile_array = \Activitypub_profile::profile_to_array($profile);
// Check type
$this->assertTrue(is_array($profile_array));
// Test with Explorer's Profile Tester
$this->assertTrue(\Activitypub_explorer::validate_remote_response($profile_array));
/* Test get_inbox() */
$this->assertTrue($aprofile->sharedInboxuri == $aprofile->get_inbox());
/* Test getUri() */
$this->assertTrue($aprofile->uri == $aprofile->getUri());
/* Test getUrl() */
$this->assertTrue($profile->getUrl() == $aprofile->getUrl());
/* Test getID() */
$this->assertTrue($profile->getID() == $aprofile->getID());
/* Test fromUri() */
$this->assertTrue($this->compare_aprofiles($aprofile, \Activitypub_profile::fromUri($aprofile->uri)));
/* Remove Remote User Test 1 */
$old_id = $profile->getID();
$apRSA->delete();
$aprofile->delete();
$profile->delete();
// Check if successfuly removed
try {
\Profile::getById($old_id);
$this->assertTrue(false);
} catch (\NoResultException $e) {
$this->assertTrue(true);
}
/* Test ensure_web_finger() */
// TODO: Maybe elaborate on this function's tests
try {
\Activitypub_profile::ensure_web_finger('test1@testinstance.net');
$this->assertTrue(false);
} catch (\Exception $e) {
$this->assertTrue($e->getMessage() == 'Not a valid webfinger address.' ||
$e->getMessage() == 'Not a valid webfinger address (via cache).');
}
}
// Helpers
private function compare_profiles(\Profile $a, \Profile $b)
{
if (($av = $a->getID()) != ($bv = $b->getID())) {
throw new Exception('Compare Profiles 1 Fail: $a: '.$av.' is different from $b: '.$bv);
}
if (($av = $a->getNickname()) != ($bv = $b->getNickname())) {
throw new Exception('Compare Profiles 2 Fail: $a: '.$av.' is different from $b: '.$bv);
}
if (($av = $a->getFullname()) != ($bv = $b->getFullname())) {
throw new Exception('Compare Profiles 3 Fail: $a: '.$av.' is different from $b: '.$bv);
}
if (($av = $a->getUrl()) != ($bv = $b->getUrl())) {
throw new Exception('Compare Profiles 4 Fail: $a: '.$av.' is different from $b: '.$bv);
}
if (($av = $a->getDescription()) != ($bv = $b->getDescription())) {
throw new Exception('Compare Profiles 5 Fail: $a: '.$av.' is different from $b: '.$bv);
}
if (($av = $a->getLocation()) != ($bv = $b->getLocation())) {
throw new Exception('Compare Profiles 6 Fail: $a: '.$av.' is different from $b: '.$bv);
}
if (($av = $a->getNickname()) != ($bv = $b->getNickname())) {
throw new Exception('Compare Profiles 7 Fail: $a: '.$av.' is different from $b: '.$bv);
}
if (($av = $a->lat) != ($bv = $b->lat)) {
throw new Exception('Compare Profiles 8 Fail: $a: '.$av.' is different from $b: '.$bv);
}
if (($av = $a->lon) != ($bv = $b->lon)) {
throw new Exception('Compare Profiles 9 Fail: $a: '.$av.' is different from $b: '.$bv);
}
return true;
}
private function compare_aprofiles(\Activitypub_profile $a, \Activitypub_profile $b)
{
if (($av = $a->getUri()) != ($bv = $b->getUri())) {
throw new Exception('Compare AProfiles 1 Fail: $a: '.$av.' is different from $b: '.$bv);
}
if (($av = $a->getUrl()) != ($bv = $b->getUrl())) {
throw new Exception('Compare AProfiles 2 Fail: $a: '.$av.' is different from $b: '.$bv);
}
if (($av = $a->getID()) != ($bv = $b->getID())) {
throw new Exception('Compare AProfiles 3 Fail: $a: '.$av.' is different from $b: '.$bv);
}
if (($av = $a->profile_id) != ($bv = $b->profile_id)) {
throw new Exception('Compare AProfiles 4 Fail: $a: '.$av.' is different from $b: '.$bv);
}
if (($av = $a->inboxuri) != ($bv = $b->inboxuri)) {
throw new Exception('Compare AProfiles 5 Fail: $a: '.$av.' is different from $b: '.$bv);
}
if (($av = $a->sharedInboxuri) != ($bv = $b->sharedInboxuri)) {
throw new Exception('Compare AProfiles 6 Fail: $a: '.$av.' is different from $b: '.$bv);
}
return true;
}
}

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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
* @link http://www.gnu.org/software/social/
*/
namespace Tests\Unit;
use Tests\TestCase;
class ExampleTest extends TestCase
{
/**
* A basic test example.
*
* @return void
*/
public function testBasicTest()
{
$this->assertTrue(true);
}
}

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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
* @link http://www.gnu.org/software/social/
*/
namespace Tests\Unit;
use Tests\TestCase;
use GuzzleHttp\Client;
use GuzzleHttp\Handler\CurlHandler;
use GuzzleHttp\Handler\MockHandler;
use GuzzleHttp\HandlerStack;
use GuzzleHttp\Middleware;
use GuzzleHttp\Psr7\Request;
use GuzzleHttp\Psr7\Response;
use HttpSignatures\Context;
use HttpSignatures\GuzzleHttpSignatures;
class HTTPSignatureTest extends TestCase
{
/**
* @var Context
*/
private $context;
/**
* @var Client
*/
private $client;
/**
* @var
*/
private $history = [];
public function testLibraryInstalled()
{
$this->assertTrue(class_exists('\GuzzleHttp\Client'));
$this->assertTrue(class_exists('\HttpSignatures\Context'));
$this->assertTrue(class_exists('\HttpSignatures\GuzzleHttpSignatures'));
}
public function setUp()
{
$this->context = new Context([
'keys' => ['pda' => 'secret'],
'algorithm' => 'hmac-sha256',
'headers' => ['(request-target)', 'date'],
]);
$stack = new HandlerStack();
$stack->setHandler(new MockHandler([
new Response(200, ['Content-Length' => 0]),
]));
$stack->push(GuzzleHttpSignatures::middlewareFromContext($this->context));
$stack->push(Middleware::history($this->history));
$this->client = new Client(['handler' => $stack]);
}
/**
* test signing a message
*/
public function testGuzzleRequestHasExpectedHeaders()
{
$this->client->get('/path?query=123', [
'headers' => ['date' => 'today', 'accept' => 'llamas']
]);
// get last request
$message = end($this->history);
/** @var Request $request */
$request = $message['request'];
/** @var Response $response */
$response = $message['request'];
$expectedString = implode(
',',
[
'keyId="pda"',
'algorithm="hmac-sha256"',
'headers="(request-target) date"',
'signature="SFlytCGpsqb/9qYaKCQklGDvwgmrwfIERFnwt+yqPJw="',
]
);
$this->assertEquals(
[$expectedString],
$request->getHeader('Signature')
);
$this->assertEquals(
['Signature ' . $expectedString],
$request->getHeader('Authorization')
);
}
/**
* test signing a message with a URL that doesn't contain a ?query
*/
public function testGuzzleRequestHasExpectedHeaders2()
{
$this->client->get('/path', [
'headers' => ['date' => 'today', 'accept' => 'llamas']
]);
// get last request
$message = end($this->history);
/** @var Request $request */
$request = $message['request'];
/** @var Response $response */
$response = $message['request'];
$expectedString = implode(
',',
[
'keyId="pda"',
'algorithm="hmac-sha256"',
'headers="(request-target) date"',
'signature="DAtF133khP05pS5Gh8f+zF/UF7mVUojMj7iJZO3Xk4o="',
]
);
$this->assertEquals(
[$expectedString],
$request->getHeader('Signature')
);
$this->assertEquals(
['Signature ' . $expectedString],
$request->getHeader('Authorization')
);
}
public function getVerifyGuzzleRequestVectors()
{
return [
/* path, headers */
['/path?query=123', ['date' => 'today', 'accept' => 'llamas']],
['/path?z=zebra&a=antelope', ['date' => 'today']],
];
}
/**
* @dataProvider getVerifyGuzzleRequestVectors
* @param string $path
* @param array $headers
*/
public function testVerifyGuzzleRequest($path, $headers)
{
$this->client->get($path, ['headers' => $headers]);
// get last request
$message = end($this->history);
/** @var Request $request */
$request = $message['request'];
/** @var Response $response */
$response = $message['request'];
$this->assertTrue($this->context->verifier()->isValid($request));
}
}