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gnu-social-v2-archive-activ.../classes/Activitypub_profile.php
2018-08-01 21:24:36 +01:00

418 lines
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PHP
Executable File

<?php
/**
* GNU social - a federating social network
*
* ActivityPubPlugin implementation for GNU Social
*
* LICENCE: 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/>.
*
* @category Plugin
* @package GNUsocial
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @author Daniel Supernault <danielsupernault@gmail.com>
* @copyright 2018 Free Software Foundation http://fsf.org
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link https://www.gnu.org/software/social/
*/
if (!defined('GNUSOCIAL')) {
exit(1);
}
/**
* ActivityPub Profile
*
* @category Plugin
* @package GNUsocial
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://www.gnu.org/software/social/
*/
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
public $modified; // timestamp() 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],
'modified' => ['type' => 'datetime', 'not null' => true],
],
'primary key' => ['profile_id'],
'unique keys' => [
'Activitypub_profile_profile_id_key' => ['profile_id'],
],
'foreign keys' => [
'Activitypub_profile_profile_id_fkey' => ['profile', ['profile_id' => 'id']],
],
];
}
/**
* Generates a pretty profile from a Profile object
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param Profile $profile
* @return pretty array to be used in a response
*/
public static function profile_to_array($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"
],
'id' => $uri,
'type' => 'Person',
'following' => common_local_url("apActorFollowing", array("id" => $id)),
'followers' => common_local_url("apActorFollowers", array("id" => $id)),
'liked' => common_local_url("apActorLiked", array("id" => $id)),
'inbox' => common_local_url("apActorInbox", array("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('apSharedInbox');
} 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
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @return Profile
* @throws NoProfileException if it was not found
*/
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
*
* @author Diogo Cordeiro <diogo@fc.up.pt>
* @param Profile $profile
* @return Activitypub_profile
*/
private static function create_from_local_profile(Profile $profile)
{
$url = $profile->getURL();
$inboxes = Activitypub_explorer::get_actor_inboxes_uri($url);
$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 int32
*/
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)
{
$explorer = new Activitypub_explorer();
$profiles_found = $explorer->lookup($url);
if (!empty($profiles_found)) {
return self::from_profile($profiles_found[0]);
} else {
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));
}
}