forked from GNUsocial/gnu-social
273 lines
9.1 KiB
PHP
273 lines
9.1 KiB
PHP
|
<?php
|
||
|
|
/*
|
||
|
|
* StatusNet - the distributed open-source microblogging tool
|
||
|
|
* Copyright (C) 2010, StatusNet, Inc.
|
||
|
|
*
|
||
|
|
* 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/>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* PuSH feed subscription record
|
||
|
|
* @package Hub
|
||
|
|
* @author Brion Vibber <brion@status.net>
|
||
|
|
*/
|
||
|
|
class HubSub extends Memcached_DataObject
|
||
|
|
{
|
||
|
|
public $__table = 'hubsub';
|
||
|
|
|
||
|
|
public $hashkey; // sha1(topic . '|' . $callback); (topic, callback) key is too long for myisam in utf8
|
||
|
|
public $topic;
|
||
|
|
public $callback;
|
||
|
|
public $secret;
|
||
|
|
public $verify_token;
|
||
|
|
public $challenge;
|
||
|
|
public $lease;
|
||
|
|
public $sub_start;
|
||
|
|
public $sub_end;
|
||
|
|
public $created;
|
||
|
|
|
||
|
|
public /*static*/ function staticGet($topic, $callback)
|
||
|
|
{
|
||
|
|
return parent::staticGet(__CLASS__, 'hashkey', self::hashkey($topic, $callback));
|
||
|
|
}
|
||
|
|
|
||
|
|
protected static function hashkey($topic, $callback)
|
||
|
|
{
|
||
|
|
return sha1($topic . '|' . $callback);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* return table definition for DB_DataObject
|
||
|
|
*
|
||
|
|
* DB_DataObject needs to know something about the table to manipulate
|
||
|
|
* instances. This method provides all the DB_DataObject needs to know.
|
||
|
|
*
|
||
|
|
* @return array array of column definitions
|
||
|
|
*/
|
||
|
|
|
||
|
|
function table()
|
||
|
|
{
|
||
|
|
return array('hashkey' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
|
||
|
|
'topic' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
|
||
|
|
'callback' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
|
||
|
|
'secret' => DB_DATAOBJECT_STR,
|
||
|
|
'verify_token' => DB_DATAOBJECT_STR,
|
||
|
|
'challenge' => DB_DATAOBJECT_STR,
|
||
|
|
'lease' => DB_DATAOBJECT_INT,
|
||
|
|
'sub_start' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME,
|
||
|
|
'sub_end' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME,
|
||
|
|
'created' => DB_DATAOBJECT_STR + DB_DATAOBJECT_DATE + DB_DATAOBJECT_TIME + DB_DATAOBJECT_NOTNULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
static function schemaDef()
|
||
|
|
{
|
||
|
|
return array(new ColumnDef('hashkey', 'char',
|
||
|
|
/*size*/40,
|
||
|
|
/*nullable*/false,
|
||
|
|
/*key*/'PRI'),
|
||
|
|
new ColumnDef('topic', 'varchar',
|
||
|
|
/*size*/255,
|
||
|
|
/*nullable*/false,
|
||
|
|
/*key*/'KEY'),
|
||
|
|
new ColumnDef('callback', 'varchar',
|
||
|
|
255, false),
|
||
|
|
new ColumnDef('secret', 'text',
|
||
|
|
null, true),
|
||
|
|
new ColumnDef('verify_token', 'text',
|
||
|
|
null, true),
|
||
|
|
new ColumnDef('challenge', 'varchar',
|
||
|
|
32, true),
|
||
|
|
new ColumnDef('lease', 'int',
|
||
|
|
null, true),
|
||
|
|
new ColumnDef('sub_start', 'datetime',
|
||
|
|
null, true),
|
||
|
|
new ColumnDef('sub_end', 'datetime',
|
||
|
|
null, true),
|
||
|
|
new ColumnDef('created', 'datetime',
|
||
|
|
null, false));
|
||
|
|
}
|
||
|
|
|
||
|
|
function keys()
|
||
|
|
{
|
||
|
|
return array_keys($this->keyTypes());
|
||
|
|
}
|
||
|
|
|
||
|
|
function sequenceKeys()
|
||
|
|
{
|
||
|
|
return array(false, false, false);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* return key definitions for DB_DataObject
|
||
|
|
*
|
||
|
|
* DB_DataObject needs to know about keys that the table has; this function
|
||
|
|
* defines them.
|
||
|
|
*
|
||
|
|
* @return array key definitions
|
||
|
|
*/
|
||
|
|
|
||
|
|
function keyTypes()
|
||
|
|
{
|
||
|
|
return array('hashkey' => 'K');
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Validates a requested lease length, sets length plus
|
||
|
|
* subscription start & end dates.
|
||
|
|
*
|
||
|
|
* Does not save to database -- use before insert() or update().
|
||
|
|
*
|
||
|
|
* @param int $length in seconds
|
||
|
|
*/
|
||
|
|
function setLease($length)
|
||
|
|
{
|
||
|
|
assert(is_int($length));
|
||
|
|
|
||
|
|
$min = 86400;
|
||
|
|
$max = 86400 * 30;
|
||
|
|
|
||
|
|
if ($length == 0) {
|
||
|
|
// We want to garbage collect dead subscriptions!
|
||
|
|
$length = $max;
|
||
|
|
} elseif( $length < $min) {
|
||
|
|
$length = $min;
|
||
|
|
} else if ($length > $max) {
|
||
|
|
$length = $max;
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->lease = $length;
|
||
|
|
$this->start_sub = common_sql_now();
|
||
|
|
$this->end_sub = common_sql_date(time() + $length);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Send a verification ping to subscriber
|
||
|
|
* @param string $mode 'subscribe' or 'unsubscribe'
|
||
|
|
*/
|
||
|
|
function verify($mode)
|
||
|
|
{
|
||
|
|
assert($mode == 'subscribe' || $mode == 'unsubscribe');
|
||
|
|
|
||
|
|
// Is this needed? data object fun...
|
||
|
|
$clone = clone($this);
|
||
|
|
$clone->challenge = common_good_rand(16);
|
||
|
|
$clone->update($this);
|
||
|
|
$this->challenge = $clone->challenge;
|
||
|
|
unset($clone);
|
||
|
|
|
||
|
|
$params = array('hub.mode' => $mode,
|
||
|
|
'hub.topic' => $this->topic,
|
||
|
|
'hub.challenge' => $this->challenge);
|
||
|
|
if ($mode == 'subscribe') {
|
||
|
|
$params['hub.lease_seconds'] = $this->lease;
|
||
|
|
}
|
||
|
|
if ($this->verify_token) {
|
||
|
|
$params['hub.verify_token'] = $this->verify_token;
|
||
|
|
}
|
||
|
|
$url = $this->callback . '?' . http_build_query($params, '', '&'); // @fixme ugly urls
|
||
|
|
|
||
|
|
try {
|
||
|
|
$request = new HTTPClient();
|
||
|
|
$response = $request->get($url);
|
||
|
|
$status = $response->getStatus();
|
||
|
|
|
||
|
|
if ($status >= 200 && $status < 300) {
|
||
|
|
$fail = false;
|
||
|
|
} else {
|
||
|
|
// @fixme how can we schedule a second attempt?
|
||
|
|
// Or should we?
|
||
|
|
$fail = "Returned HTTP $status";
|
||
|
|
}
|
||
|
|
} catch (Exception $e) {
|
||
|
|
$fail = $e->getMessage();
|
||
|
|
}
|
||
|
|
if ($fail) {
|
||
|
|
// @fixme how can we schedule a second attempt?
|
||
|
|
// or save a fail count?
|
||
|
|
// Or should we?
|
||
|
|
common_log(LOG_ERR, "Failed to verify $mode for $this->topic at $this->callback: $fail");
|
||
|
|
return false;
|
||
|
|
} else {
|
||
|
|
if ($mode == 'subscribe') {
|
||
|
|
// Establish or renew the subscription!
|
||
|
|
// This seems unnecessary... dataobject fun!
|
||
|
|
$clone = clone($this);
|
||
|
|
$clone->challenge = null;
|
||
|
|
$clone->setLease($this->lease);
|
||
|
|
$clone->update($this);
|
||
|
|
unset($clone);
|
||
|
|
|
||
|
|
$this->challenge = null;
|
||
|
|
$this->setLease($this->lease);
|
||
|
|
common_log(LOG_ERR, "Verified $mode of $this->callback:$this->topic for $this->lease seconds");
|
||
|
|
} else if ($mode == 'unsubscribe') {
|
||
|
|
common_log(LOG_ERR, "Verified $mode of $this->callback:$this->topic");
|
||
|
|
$this->delete();
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Insert wrapper; transparently set the hash key from topic and callback columns.
|
||
|
|
* @return boolean success
|
||
|
|
*/
|
||
|
|
function insert()
|
||
|
|
{
|
||
|
|
$this->hashkey = self::hashkey($this->topic, $this->callback);
|
||
|
|
return parent::insert();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Send a 'fat ping' to the subscriber's callback endpoint
|
||
|
|
* containing the given Atom feed chunk.
|
||
|
|
*
|
||
|
|
* Determination of which items to send should be done at
|
||
|
|
* a higher level; don't just shove in a complete feed!
|
||
|
|
*
|
||
|
|
* @param string $atom well-formed Atom feed
|
||
|
|
*/
|
||
|
|
function push($atom)
|
||
|
|
{
|
||
|
|
$headers = array('Content-Type: application/atom+xml');
|
||
|
|
if ($this->secret) {
|
||
|
|
$hmac = sha1($atom . $this->secret);
|
||
|
|
$headers[] = "X-Hub-Signature: sha1=$hmac";
|
||
|
|
} else {
|
||
|
|
$hmac = '(none)';
|
||
|
|
}
|
||
|
|
common_log(LOG_INFO, "About to push feed to $this->callback for $this->topic, HMAC $hmac");
|
||
|
|
try {
|
||
|
|
$request = new HTTPClient();
|
||
|
|
$request->setBody($atom);
|
||
|
|
$response = $request->post($this->callback, $headers);
|
||
|
|
|
||
|
|
if ($response->isOk()) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
common_log(LOG_ERR, "Error sending PuSH content " .
|
||
|
|
"to $this->callback for $this->topic: " .
|
||
|
|
$response->getStatus());
|
||
|
|
return false;
|
||
|
|
|
||
|
|
} catch (Exception $e) {
|
||
|
|
common_log(LOG_ERR, "Error sending PuSH content " .
|
||
|
|
"to $this->callback for $this->topic: " .
|
||
|
|
$e->getMessage());
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|