/**
* Sign and post the given Atom entry as a Salmon message.
*
* Side effects: may generate a keypair on-demand for the given user,
* which can be very slow on some systems (like those without php5-gmp).
*
* @param string $endpoint_uri
* @param string $xml string representation of payload
* @param Profile $user profile whose keys we sign with (must be a local user)
* @return boolean success
*/
public static function post($endpoint_uri, $xml, Profile $actor, Profile $target = null)
{
if (empty($endpoint_uri)) {
common_debug('No endpoint URI for Salmon post to ' . $actor->getUri());
return false;
}
try {
$magic_env = MagicEnvelope::signAsUser($xml, $actor->getUser());
} catch (Exception $e) {
common_log(LOG_ERR, "Salmon unable to sign: " . $e->getMessage());
return false;
}
// $target is so far only used in Diaspora, so it can be null
if (Event::handle('SalmonSlap', array($endpoint_uri, $magic_env, $target))) {
return false;
//throw new ServerException('Could not distribute salmon slap as no plugin completed the event.');
}
return true;
}
/**
* Get the Salmon keypair from a URI, uses XRD Discovery etc. Reasonably
* you'll only get the public key ;)
*
* The string will (hopefully) be formatted as described in Magicsig specification:
* https://salmon-protocol.googlecode.com/svn/trunk/draft-panzer-magicsig-01.html#anchor13
*
* @return string formatted as Magicsig keypair
*/
public function discoverKeyPair(Profile $profile)
{
$signer_uri = $profile->getUri();
if (empty($signer_uri)) {
throw new ServerException(sprintf('Profile missing URI (id==%d)', $profile->id));
}
$disco = new Discovery();
// Throws exception on lookup problems
$xrd = $disco->lookup($signer_uri);
$link = $xrd->get(Magicsig::PUBLICKEYREL);
if (is_null($link)) {
// TRANS: Exception.
throw new Exception(_m('Unable to locate signer public key.'));
}
// We have a public key element, let's hope it has proper key data.
$keypair = false;
$parts = explode(',', $link->href);
if (count($parts) == 2) {
$keypair = $parts[1];
} else {
// Backwards compatibility check for separator bug in 0.9.0
$parts = explode(';', $link->href);
if (count($parts) == 2) {
$keypair = $parts[1];
}
}
if ($keypair === false) {
// For debugging clarity. Keypair did not pass count()-check above.
// TRANS: Exception when public key was not properly formatted.
throw new Exception(_m('Incorrectly formatted public key element.'));
}
return $keypair;
}
function onEndUnsubscribe(Profile $profile, Profile $other)
{
// Only do this if config is enabled
if (!$this->StopFollowUser) {
return true;
}
if (!$profile->isLocal()) {
return true;
}
// TRANS: Text for "stopped following" item in activity plugin.
// TRANS: %1$s is a profile URL, %2$s is a profile name,
// TRANS: %3$s is a profile URL, %4$s is a profile name.
$rendered = sprintf(_m('<a href="%1$s">%2$s</a> stopped following <a href="%3$s">%4$s</a>.'), $profile->getUrl(), $profile->getBestName(), $other->getUrl(), $other->getBestName());
// TRANS: Text for "stopped following" item in activity plugin.
// TRANS: %1$s is a profile name, %2$s is a profile URL,
// TRANS: %3$s is a profile name, %4$s is a profile URL.
$content = sprintf(_m('%1$s (%2$s) stopped following %3$s (%4$s).'), $profile->getBestName(), $profile->getUrl(), $other->getBestName(), $other->getUrl());
$uri = TagURI::mint('stop-following:%d:%d:%s', $profile->id, $other->id, common_date_iso8601(common_sql_now()));
$notice = Notice::saveNew($profile->id, $content, ActivityPlugin::SOURCE, array('rendered' => $rendered, 'urls' => array(), 'replies' => array($other->getUri()), 'uri' => $uri, 'verb' => ActivityVerb::UNFOLLOW, 'object_type' => ActivityObject::PERSON));
return true;
}
/**
* Get the Salmon keypair from a URI, uses XRD Discovery etc. Reasonably
* you'll only get the public key ;)
*
* The string will (hopefully) be formatted as described in Magicsig specification:
* https://salmon-protocol.googlecode.com/svn/trunk/draft-panzer-magicsig-01.html#anchor13
*
* @return string formatted as Magicsig keypair
*/
public function discoverKeyPair(Profile $profile)
{
$signer_uri = $profile->getUri();
if (empty($signer_uri)) {
throw new ServerException(sprintf('Profile missing URI (id==%d)', $profile->getID()));
}
$disco = new Discovery();
// Throws exception on lookup problems
try {
$xrd = $disco->lookup($signer_uri);
} catch (Exception $e) {
// Diaspora seems to require us to request the acct: uri
$xrd = $disco->lookup($profile->getAcctUri());
}
common_debug('Will try to find magic-public-key from XRD of profile id==' . $profile->getID());
$pubkey = null;
if (Event::handle('MagicsigPublicKeyFromXRD', array($xrd, &$pubkey))) {
$link = $xrd->get(Magicsig::PUBLICKEYREL);
if (is_null($link)) {
// TRANS: Exception.
throw new Exception(_m('Unable to locate signer public key.'));
}
$pubkey = $link->href;
}
if (empty($pubkey)) {
throw new ServerException('Empty Magicsig public key. A bug?');
}
// We have a public key element, let's hope it has proper key data.
$keypair = false;
$parts = explode(',', $pubkey);
if (count($parts) == 2) {
$keypair = $parts[1];
} else {
// Backwards compatibility check for separator bug in 0.9.0
$parts = explode(';', $pubkey);
if (count($parts) == 2) {
$keypair = $parts[1];
}
}
if ($keypair === false) {
// For debugging clarity. Keypair did not pass count()-check above.
// TRANS: Exception when public key was not properly formatted.
throw new Exception(_m('Incorrectly formatted public key element.'));
}
return $keypair;
}
static function fromProfile(Profile $profile)
{
$object = new ActivityObject();
if (Event::handle('StartActivityObjectFromProfile', array($profile, &$object))) {
$object->type = ActivityObject::PERSON;
$object->id = $profile->getUri();
$object->title = $profile->getBestName();
$object->link = $profile->profileurl;
$orig = $profile->getOriginalAvatar();
if (!empty($orig)) {
$object->avatarLinks[] = AvatarLink::fromAvatar($orig);
}
$sizes = array(AVATAR_PROFILE_SIZE, AVATAR_STREAM_SIZE, AVATAR_MINI_SIZE);
foreach ($sizes as $size) {
$alink = null;
$avatar = $profile->getAvatar($size);
if (!empty($avatar)) {
$alink = AvatarLink::fromAvatar($avatar);
} else {
$alink = new AvatarLink();
$alink->type = 'image/png';
$alink->height = $size;
$alink->width = $size;
$alink->url = Avatar::defaultImage($size);
if ($size == AVATAR_PROFILE_SIZE) {
// Hack for Twitter import: we don't have a 96x96 image,
// but we do have a 73x73 image. For now, fake it with that.
$avatar = $profile->getAvatar(73);
if ($avatar) {
$alink = AvatarLink::fromAvatar($avatar);
$alink->height = $size;
$alink->width = $size;
}
}
}
$object->avatarLinks[] = $alink;
}
if (isset($profile->lat) && isset($profile->lon)) {
$object->geopoint = (double) $profile->lat . ' ' . (double) $profile->lon;
}
$object->poco = PoCo::fromProfile($profile);
Event::handle('EndActivityObjectFromProfile', array($profile, &$object));
}
return $object;
}
static function fromProfile(Profile $profile)
{
$object = new ActivityObject();
$object->type = ActivityObject::PERSON;
$object->id = $profile->getUri();
$object->title = $profile->getBestName();
$object->link = $profile->profileurl;
$orig = $profile->getOriginalAvatar();
if (!empty($orig)) {
$object->avatarLinks[] = AvatarLink::fromAvatar($orig);
}
$sizes = array(AVATAR_PROFILE_SIZE, AVATAR_STREAM_SIZE, AVATAR_MINI_SIZE);
foreach ($sizes as $size) {
$alink = null;
$avatar = $profile->getAvatar($size);
if (!empty($avatar)) {
$alink = AvatarLink::fromAvatar($avatar);
} else {
$alink = new AvatarLink();
$alink->type = 'image/png';
$alink->height = $size;
$alink->width = $size;
$alink->url = Avatar::defaultImage($size);
}
$object->avatarLinks[] = $alink;
}
if (isset($profile->lat) && isset($profile->lon)) {
$object->geopoint = (double) $profile->lat . ' ' . (double) $profile->lon;
}
$object->poco = PoCo::fromProfile($profile);
return $object;
}
static function checkAuthorship(Activity $activity, Profile $profile)
{
if (Event::handle('CheckActivityAuthorship', array($activity, &$profile))) {
// if (empty($activity->actor)), then we generated this Activity ourselves and can trust $profile
$actor_uri = $profile->getUri();
if (!in_array($actor_uri, array($activity->actor->id, $activity->actor->link))) {
// A mismatch between our locally stored URI and the supplied author?
// Probably not more than a blog feed or something (with multiple authors or so)
// but log it for future inspection.
common_log(LOG_WARNING, "Got an actor '{$activity->actor->title}' ({$activity->actor->id}) on single-user feed for " . $actor_uri);
} elseif (empty($activity->actor->id)) {
// Plain <author> without ActivityStreams actor info.
// We'll just ignore this info for now and save the update under the feed's identity.
}
}
if (!$profile instanceof Profile) {
throw new ServerException('Could not get an author Profile for activity');
}
return $profile;
}
