/**
* Remote user sent us an update to their profile.
* If we already know them, accept the updates.
*/
function handleUpdateProfile()
{
$oprofile = Ostatus_profile::getActorProfile($this->act);
if ($oprofile) {
common_log(LOG_INFO, "Got a profile-update ping from {$oprofile->uri}");
$oprofile->updateFromActivityObject($this->act->actor);
} else {
common_log(LOG_INFO, "Ignoring profile-update ping from unknown " . $this->act->actor->id);
}
}
function ensureProfiles()
{
try {
$this->oprofile = Ostatus_profile::getActorProfile($this->activity);
if (!$this->oprofile instanceof Ostatus_profile) {
throw new UnknownUriException($this->activity->actor->id);
}
} catch (UnknownUriException $e) {
// Apparently we didn't find the Profile object based on our URI,
// so OStatus doesn't have it with this URI in ostatus_profile.
// Try to look it up again, remote side may have changed from http to https
// or maybe publish an acct: URI now instead of an http: URL.
//
// Steps:
// 1. Check the newly received URI. Who does it say it is?
// 2. Compare these alleged identities to our local database.
// 3. If we found any locally stored identities, ask it about its aliases.
// 4. Do any of the aliases from our known identity match the recently introduced one?
//
// Example: We have stored http://example.com/user/1 but this URI says https://example.com/user/1
common_debug('No local Profile object found for a magicsigned activity author URI: ' . $e->object_uri);
$disco = new Discovery();
$xrd = $disco->lookup($e->object_uri);
// Step 1: We got a bunch of discovery data for https://example.com/user/1 which includes
// aliases https://example.com/user and hopefully our original http://example.com/user/1 too
$all_ids = array_merge(array($xrd->subject), $xrd->aliases);
if (!in_array($e->object_uri, $all_ids)) {
common_debug('The activity author URI we got was not listed itself when doing discovery on it.');
throw $e;
}
// Go through each reported alias from lookup to see if we know this already
foreach ($all_ids as $aliased_uri) {
$oprofile = Ostatus_profile::getKV('uri', $aliased_uri);
if (!$oprofile instanceof Ostatus_profile) {
continue;
// unknown locally, check the next alias
}
// Step 2: We found the alleged http://example.com/user/1 URI in our local database,
// but this can't be trusted yet because anyone can publish any alias.
common_debug('Found a local Ostatus_profile for "' . $e->object_uri . '" with this URI: ' . $aliased_uri);
// We found an existing OStatus profile, but is it really the same? Do a callback to the URI's origin
// Step 3: lookup our previously known http://example.com/user/1 webfinger etc.
$xrd = $disco->lookup($oprofile->getUri());
// getUri returns ->uri, which we filtered on earlier
$doublecheck_aliases = array_merge(array($xrd->subject), $xrd->aliases);
common_debug('Trying to match known "' . $aliased_uri . '" against its returned aliases: ' . implode(' ', $doublecheck_aliases));
// if we find our original URI here, it is a legitimate alias
// Step 4: Is the newly introduced https://example.com/user/1 URI in the list of aliases
// presented by http://example.com/user/1 (i.e. do they both say they are the same identity?)
if (in_array($e->object_uri, $doublecheck_aliases)) {
$oprofile->updateUriKeys($e->object_uri, DiscoveryHints::fromXRD($xrd));
$this->oprofile = $oprofile;
break;
// don't iterate through aliases anymore
}
}
// We might end up here after $all_ids is iterated through without a $this->oprofile value,
if (!$this->oprofile instanceof Ostatus_profile) {
common_debug("We do not have a local profile to connect to this activity's author. Let's create one.");
// ensureActivityObjectProfile throws exception on failure
$this->oprofile = Ostatus_profile::ensureActivityObjectProfile($this->activity->actor);
}
}
assert($this->oprofile instanceof Ostatus_profile);
$this->actor = $this->oprofile->localProfile();
}
