26115482ef
Avoid the use of deprecated MariaDB "zero dates" globally. If they're present as attribute defaults somewhere, they will be replaced with NULL implicitly. The existing "zero dates" in MariaDB storage will be left intact and this should not present any issues. The "timestamp" type in table definitions now corresponds to DATETIME in MariaDB with "DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP", which should be close enough to the original behaviour for compatibility purposes. It is now the recommended type for "modified" attributes, because of the update trigger on MariaDB. But there is no such trigger implemented on PostgreSQL as of this moment.
451 lines
16 KiB
PHP
451 lines
16 KiB
PHP
<?php
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// This file is part of GNU social - https://www.gnu.org/software/social
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//
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// GNU social is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// GNU social is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
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/**
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* @copyright 2008, 2009, StatusNet, Inc.
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* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
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*/
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defined('GNUSOCIAL') || die();
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/**
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* Table Definition for subscription
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*/
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class Subscription extends Managed_DataObject
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{
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const CACHE_WINDOW = 201;
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const FORCE = true;
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public $__table = 'subscription'; // table name
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public $subscriber; // int(4) primary_key not_null
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public $subscribed; // int(4) primary_key not_null
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public $jabber; // bool default_true
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public $sms; // bool default_true
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public $token; // varchar(191) not 255 because utf8mb4 takes more space
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public $secret; // varchar(191) not 255 because utf8mb4 takes more space
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public $uri; // varchar(191) not 255 because utf8mb4 takes more space
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public $created; // datetime()
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public $modified; // timestamp() not_null default_CURRENT_TIMESTAMP
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public static function schemaDef()
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{
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return array(
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'fields' => array(
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'subscriber' => array('type' => 'int', 'not null' => true, 'description' => 'profile listening'),
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'subscribed' => array('type' => 'int', 'not null' => true, 'description' => 'profile being listened to'),
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'jabber' => array('type' => 'bool', 'default' => true, 'description' => 'deliver jabber messages'),
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'sms' => array('type' => 'bool', 'default' => true, 'description' => 'deliver sms messages'),
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'token' => array('type' => 'varchar', 'length' => 191, 'description' => 'authorization token'),
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'secret' => array('type' => 'varchar', 'length' => 191, 'description' => 'token secret'),
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'uri' => array('type' => 'varchar', 'length' => 191, 'description' => 'universally unique identifier'),
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'created' => array('type' => 'datetime', 'description' => 'date this record was created'),
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'modified' => array('type' => 'timestamp', 'not null' => true, 'description' => 'date this record was modified'),
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),
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'primary key' => array('subscriber', 'subscribed'),
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'unique keys' => array(
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'subscription_uri_key' => array('uri'),
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),
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'indexes' => array(
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'subscription_subscriber_idx' => array('subscriber', 'created'),
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'subscription_subscribed_idx' => array('subscribed', 'created'),
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'subscription_token_idx' => array('token'),
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),
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);
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}
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/**
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* Make a new subscription
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*
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* @param Profile $subscriber party to receive new notices
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* @param Profile $other party sending notices; publisher
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* @param bool $force pass Subscription::FORCE to override local subscription approval
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*
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* @return mixed Subscription or Subscription_queue: new subscription info
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*/
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public static function start(Profile $subscriber, Profile $other, $force = false)
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{
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if (!$subscriber->hasRight(Right::SUBSCRIBE)) {
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// TRANS: Exception thrown when trying to subscribe while being banned from subscribing.
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throw new Exception(_('You have been banned from subscribing.'));
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}
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if (self::exists($subscriber, $other)) {
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// TRANS: Exception thrown when trying to subscribe while already subscribed.
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throw new AlreadyFulfilledException(_('Already subscribed!'));
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}
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if ($other->hasBlocked($subscriber)) {
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// TRANS: Exception thrown when trying to subscribe to a user who has blocked the subscribing user.
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throw new Exception(_('User has blocked you.'));
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}
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if (Event::handle('StartSubscribe', array($subscriber, $other))) {
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// unless subscription is forced, the user policy for subscription approvals is tested
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if (!$force && $other->requiresSubscriptionApproval($subscriber)) {
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try {
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$sub = Subscription_queue::saveNew($subscriber, $other);
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$sub->notify();
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} catch (AlreadyFulfilledException $e) {
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$sub = Subscription_queue::getSubQueue($subscriber, $other);
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}
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} else {
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$otherUser = User::getKV('id', $other->id);
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$sub = self::saveNew($subscriber, $other);
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$sub->notify();
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self::blow('user:notices_with_friends:%d', $subscriber->id);
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self::blow('subscription:by-subscriber:'.$subscriber->id);
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self::blow('subscription:by-subscribed:'.$other->id);
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$subscriber->blowSubscriptionCount();
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$other->blowSubscriberCount();
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if ($otherUser instanceof User &&
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$otherUser->autosubscribe &&
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!self::exists($other, $subscriber) &&
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!$subscriber->hasBlocked($other)) {
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try {
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self::start($other, $subscriber);
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} catch (AlreadyFulfilledException $e) {
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// This shouldn't happen due to !self::exists above
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common_debug('Tried to autosubscribe a user to its new subscriber.');
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} catch (Exception $e) {
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common_log(LOG_ERR, "Exception during autosubscribe of {$other->nickname} to profile {$subscriber->id}: {$e->getMessage()}");
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}
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}
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}
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if ($sub instanceof Subscription) { // i.e. not Subscription_queue
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Event::handle('EndSubscribe', array($subscriber, $other));
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}
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}
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return $sub;
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}
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public static function ensureStart(Profile $subscriber, Profile $other, $force = false)
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{
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try {
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$sub = self::start($subscriber, $other, $force);
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} catch (AlreadyFulfilledException $e) {
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return self::getSubscription($subscriber, $other);
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}
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return $sub;
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}
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/**
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* Low-level subscription save.
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* Outside callers should use Subscription::start()
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*/
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protected static function saveNew(Profile $subscriber, Profile $other)
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{
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$sub = new Subscription();
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$sub->subscriber = $subscriber->getID();
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$sub->subscribed = $other->getID();
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$sub->jabber = true;
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$sub->sms = true;
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$sub->created = common_sql_now();
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$sub->uri = self::newUri(
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$subscriber,
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$other,
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$sub->created
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);
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$result = $sub->insert();
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if ($result===false) {
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common_log_db_error($sub, 'INSERT', __FILE__);
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// TRANS: Exception thrown when a subscription could not be stored on the server.
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throw new Exception(_('Could not save subscription.'));
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}
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return $sub;
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}
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public function notify()
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{
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// XXX: add other notifications (Jabber, SMS) here
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// XXX: queue this and handle it offline
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// XXX: Whatever happens, do it in Twitter-like API, too
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$this->notifyEmail();
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}
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public function notifyEmail()
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{
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$subscribedUser = User::getKV('id', $this->subscribed);
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if ($subscribedUser instanceof User) {
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$subscriber = Profile::getKV('id', $this->subscriber);
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mail_subscribe_notify_profile($subscribedUser, $subscriber);
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}
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}
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/**
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* Cancel a subscription
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*
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*/
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public static function cancel(Profile $subscriber, Profile $other)
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{
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if (!self::exists($subscriber, $other)) {
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// TRANS: Exception thrown when trying to unsibscribe without a subscription.
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throw new AlreadyFulfilledException(_('Not subscribed!'));
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}
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// Don't allow deleting self subs
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if ($subscriber->id == $other->id) {
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// TRANS: Exception thrown when trying to unsubscribe a user from themselves.
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throw new Exception(_('Could not delete self-subscription.'));
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}
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if (Event::handle('StartUnsubscribe', array($subscriber, $other))) {
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$sub = Subscription::pkeyGet(array('subscriber' => $subscriber->id,
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'subscribed' => $other->id));
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// note we checked for existence above
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assert(!empty($sub));
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$result = $sub->delete();
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if (!$result) {
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common_log_db_error($sub, 'DELETE', __FILE__);
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// TRANS: Exception thrown when a subscription could not be deleted on the server.
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throw new Exception(_('Could not delete subscription.'));
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}
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self::blow('user:notices_with_friends:%d', $subscriber->id);
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self::blow('subscription:by-subscriber:'.$subscriber->id);
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self::blow('subscription:by-subscribed:'.$other->id);
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$subscriber->blowSubscriptionCount();
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$other->blowSubscriberCount();
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Event::handle('EndUnsubscribe', array($subscriber, $other));
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}
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return;
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}
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public static function exists(Profile $subscriber, Profile $other)
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{
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try {
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$sub = self::getSubscription($subscriber, $other);
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} catch (NoResultException $e) {
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return false;
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}
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return true;
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}
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public static function getSubscription(Profile $subscriber, Profile $other)
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{
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// This is essentially a pkeyGet but we have an object to return in NoResultException
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$sub = new Subscription();
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$sub->subscriber = $subscriber->id;
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$sub->subscribed = $other->id;
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if (!$sub->find(true)) {
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throw new NoResultException($sub);
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}
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return $sub;
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}
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public function getSubscriber()
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{
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return Profile::getByID($this->subscriber);
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}
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public function getSubscribed()
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{
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return Profile::getByID($this->subscribed);
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}
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public function asActivity()
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{
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$subscriber = $this->getSubscriber();
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$subscribed = $this->getSubscribed();
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$act = new Activity();
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$act->verb = ActivityVerb::FOLLOW;
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// XXX: rationalize this with the URL
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$act->id = $this->getUri();
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$act->time = strtotime($this->created);
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// TRANS: Activity title when subscribing to another person.
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$act->title = _m('TITLE', 'Follow');
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// TRANS: Notification given when one person starts following another.
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// TRANS: %1$s is the subscriber, %2$s is the subscribed.
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$act->content = sprintf(
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_('%1$s is now following %2$s.'),
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$subscriber->getBestName(),
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$subscribed->getBestName()
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);
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$act->actor = $subscriber->asActivityObject();
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$act->objects[] = $subscribed->asActivityObject();
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$url = common_local_url(
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'AtomPubShowSubscription',
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[
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'subscriber' => $subscriber->id,
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'subscribed' => $subscribed->id,
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]
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);
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$act->selfLink = $url;
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$act->editLink = $url;
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return $act;
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}
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/**
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* Stream of subscriptions with the same subscriber
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*
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* Useful for showing pages that list subscriptions in reverse
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* chronological order. Has offset & limit to make paging
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* easy.
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*
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* @param integer $profile_id ID of the subscriber profile
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* @param integer $offset Offset from latest
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* @param integer $limit Maximum number to fetch
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*
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* @return Subscription stream of subscriptions; use fetch() to iterate
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*/
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public static function bySubscriber($profile_id, $offset = 0, $limit = PROFILES_PER_PAGE)
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{
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// "by subscriber" means it is the list of subscribed users we want
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$ids = self::getSubscribedIDs($profile_id, $offset, $limit);
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return Subscription::listFind('subscribed', $ids);
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}
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/**
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* Stream of subscriptions with the same subscriber
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*
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* Useful for showing pages that list subscriptions in reverse
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* chronological order. Has offset & limit to make paging
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* easy.
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*
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* @param integer $profile_id ID of the subscribed profile
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* @param integer $offset Offset from latest
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* @param integer $limit Maximum number to fetch
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*
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* @return Subscription stream of subscriptions; use fetch() to iterate
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*/
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public static function bySubscribed($profile_id, $offset = 0, $limit = PROFILES_PER_PAGE)
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{
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// "by subscribed" means it is the list of subscribers we want
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$ids = self::getSubscriberIDs($profile_id, $offset, $limit);
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return Subscription::listFind('subscriber', $ids);
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}
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// The following are helper functions to the subscription lists,
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// notably the public ones get used in places such as Profile
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public static function getSubscribedIDs($profile_id, $offset, $limit)
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{
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return self::getSubscriptionIDs('subscribed', $profile_id, $offset, $limit);
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}
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public static function getSubscriberIDs($profile_id, $offset, $limit)
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{
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return self::getSubscriptionIDs('subscriber', $profile_id, $offset, $limit);
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}
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private static function getSubscriptionIDs($get_type, $profile_id, $offset, $limit)
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{
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switch ($get_type) {
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case 'subscribed':
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$by_type = 'subscriber';
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break;
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case 'subscriber':
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$by_type = 'subscribed';
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break;
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default:
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throw new Exception('Bad type argument to getSubscriptionIDs');
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}
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$cacheKey = 'subscription:by-'.$by_type.':'.$profile_id;
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$queryoffset = $offset;
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$querylimit = $limit;
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if ($offset + $limit <= self::CACHE_WINDOW) {
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// Oh, it seems it should be cached
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$ids = self::cacheGet($cacheKey);
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if (is_array($ids)) {
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return array_slice($ids, $offset, $limit);
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}
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// Being here indicates we didn't find anything cached
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// so we'll have to fill it up simultaneously
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$queryoffset = 0;
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$querylimit = self::CACHE_WINDOW;
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}
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$sub = new Subscription();
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$sub->$by_type = $profile_id;
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$sub->selectAdd($get_type);
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$sub->whereAdd($get_type . ' <> ' . $profile_id);
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$sub->orderBy('created DESC');
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$sub->limit($queryoffset, $querylimit);
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if (!$sub->find()) {
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return array();
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}
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$ids = $sub->fetchAll($get_type);
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// If we're simultaneously filling up cache, remember to slice
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if ($queryoffset === 0 && $querylimit === self::CACHE_WINDOW) {
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self::cacheSet($cacheKey, $ids);
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return array_slice($ids, $offset, $limit);
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}
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return $ids;
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}
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/**
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* Flush cached subscriptions when subscription is updated
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*
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* Because we cache subscriptions, it's useful to flush them
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* here.
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*
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* @param mixed $dataObject Original version of object
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*
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* @return boolean success flag.
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*/
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public function update($dataObject = false)
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{
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self::blow('subscription:by-subscriber:'.$this->subscriber);
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self::blow('subscription:by-subscribed:'.$this->subscribed);
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return parent::update($dataObject);
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}
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public function getUri()
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{
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return $this->uri ?: self::newUri($this->getSubscriber(), $this->getSubscribed(), $this->created);
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}
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}
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