gnu-social/plugins/OStatus/lib/salmon.php

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<?php
/**
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2010, StatusNet, Inc.
*
* A sample module to show best practices for StatusNet plugins
*
* PHP version 5
*
* 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/>.
*
* @package StatusNet
* @author James Walker <james@status.net>
* @copyright 2010 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
* @link http://status.net/
*/
class Salmon
{
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const REL_SALMON = 'salmon';
const REL_MENTIONED = 'mentioned';
// XXX: these are deprecated
const NS_REPLIES = "http://salmon-protocol.org/ns/salmon-replies";
const NS_MENTIONS = "http://salmon-protocol.org/ns/salmon-mention";
/**
* 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 User $user local user profile whose keys we sign with
* @return boolean success
*/
public static function post($endpoint_uri, $xml, User $user)
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{
if (empty($endpoint_uri)) {
common_debug('No endpoint URI for Salmon post to '.$user->getUri());
return false;
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}
try {
$magic_env = MagicEnvelope::signAsUser($xml, $user);
$envxml = $magic_env->toXML();
} catch (Exception $e) {
common_log(LOG_ERR, "Salmon unable to sign: " . $e->getMessage());
return false;
}
$headers = array('Content-Type: application/magic-envelope+xml');
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try {
$client = new HTTPClient();
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$client->setBody($envxml);
$response = $client->post($endpoint_uri, $headers);
} catch (HTTP_Request2_Exception $e) {
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common_log(LOG_ERR, "Salmon post to $endpoint_uri failed: " . $e->getMessage());
return false;
}
if ($response->getStatus() != 200) {
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common_log(LOG_ERR, sprintf('Salmon (from profile %d) endpoint %s returned status %s: %s',
$user->id, $endpoint_uri, $response->getStatus(), $response->getBody()));
return false;
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}
// Success!
return true;
}
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}