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gnu-social-v2-archive-activitypub-plugin
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Now discovery module is able to go through collections

This commit is contained in:
Diogo Cordeiro 2018-07-09 14:41:53 +01:00
parent f533ef2d32
commit cc69c33113
1 changed files with 57 additions and 17 deletions
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74
utils/discovery.php
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@ -34,12 +34,30 @@ use Profile;
if (!defined('GNUSOCIAL')) { exit(1); }
class Activitypub_Discovery {
private $discovered_actor_profiles = array ();
public function lookup ($url)
{
$this->discovered_actor_profiles = array ();
return $this->_lookup ($url);;
}
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
$this->grab_local_user ($url) || $this->grab_remote_user($url);
return $this->discovered_actor_profiles;
}
private function grab_local_user ($url)
{
if (($actor_profile = Profile::getKV ("profileurl", $url)) != false) {
return $actor_profile;
} else {
$this->discovered_actor_profiles[]= $actor_profile;
return true;
} else { // XXX:
// Sometimes it is not true that the user is not locally available,
// mostly when it is a local user and URLs slightly changed
// e.g.: GS instance owner changed from standard urls to pretty urls
@ -50,39 +68,61 @@ class Activitypub_Discovery {
if (substr ($url, 0, $root_url_len) == common_root_url ()) {
// Grab the nickname and try to get the user
if (($actor_profile = Profile::getKV ("nickname", substr ($url, $root_url_len))) != false) {
return $actor_profile;
$this->discovered_actor_profiles[]= $actor_profile;
return true;
}
}
}
// If the local fetch fails: grab it remotely, store locally and return
return false;
}
private function grab_remote_user ($url)
{
$client = new HTTPClient ();
$headers = array();
$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);
$this->response = json_decode ($response->getBody (), JSON_UNESCAPED_SLASHES);
if (!$response->isOk()) {
throw new NoResultException ("Invalid Actor URL.");
}
return $this->storeProfile ();
}
private function storeProfile ()
{
$res = $this->response;
// Validate response
if (!isset ($res["url"], $res["nickname"], $res["display_name"], $res["summary"])) {
throw new NoProfileException("Invalid Actor URL.");
$res = json_decode ($response->getBody (), JSON_UNESCAPED_SLASHES);
if (isset ($res["orderedItems"])) { // It's a potential collection of actors!!!
foreach ($res["orderedItems"] as $profile) {
if ($this->_lookup ($profile) == false) {
// XXX: Invalid actor found, not sure how we handle those
}
}
// Go through entire collection
if (!is_null ($res["next"])) {
$this->_lookup ($res["next"]);
}
return true;
} else if ($this->validate_remote_response ($res)) {
$this->discovered_actor_profiles[]= $this->store_profile ($res);
return true;
}
return false;
}
private function store_profile ($res) {
$profile = new Profile;
$profile->profileurl = $res["url"];
$profile->nickname = $res["nickname"];
$profile->fullname = $res["display_name"];
$profile->bio = substr ($res["summary"], 0, 1000);
$profile->insert ();
return $profile;
}
private function validate_remote_response ($res)
{
if (!isset ($res["url"], $res["nickname"], $res["display_name"], $res["summary"])) {
return false;
}
return true;
}
}