forked from GNUsocial/gnu-social
448 lines
16 KiB
PHP
448 lines
16 KiB
PHP
<?php
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/**
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* Phergie
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*
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* PHP version 5
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.
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* It is also available through the world-wide-web at this URL:
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* http://phergie.org/license
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*
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* @category Phergie
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* @package Phergie_Plugin_Karma
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* @author Phergie Development Team <team@phergie.org>
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* @copyright 2008-2010 Phergie Development Team (http://phergie.org)
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* @license http://phergie.org/license New BSD License
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* @link http://pear.phergie.org/package/Phergie_Plugin_Karma
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*/
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/**
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* Handles requests for incrementation or decrementation of a maintained list
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* of counters for specified terms and antithrottling to prevent extreme
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* inflation or depression of counters by any single individual.
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*
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* @category Phergie
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* @package Phergie_Plugin_Karma
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* @author Phergie Development Team <team@phergie.org>
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* @license http://phergie.org/license New BSD License
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* @link http://pear.phergie.org/package/Phergie_Plugin_Karma
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*/
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class Phergie_Plugin_Karma extends Phergie_Plugin_Abstract
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{
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/**
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* Stores the SQLite object
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*
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* @var resource
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*/
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protected $db = null;
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/**
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* Retains the last garbage collection date
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*
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* @var array
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*/
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protected $lastGc = null;
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/**
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* Logs the karma usages and limits users to one karma change per word
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* and per day
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*
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* @return void
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*/
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protected $log = array();
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/**
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* Some fixed karma values, keys must be lowercase
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*
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* @var array
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*/
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protected $fixedKarma;
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/**
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* A list of blacklisted values
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*
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* @var array
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*/
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protected $karmaBlacklist;
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/**
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* Answers for correct assertions
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*/
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protected $positiveAnswers;
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/**
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* Answers for incorrect assertions
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*/
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protected $negativeAnswers;
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/**
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* Prepared PDO statements
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*
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* @var PDOStatement
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*/
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protected $insertKarma;
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protected $updateKarma;
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protected $fetchKarma;
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protected $insertComment;
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/**
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* Connects to the database containing karma ratings and initializes
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* class properties.
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*
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* @return void
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*/
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public function onLoad()
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{
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$this->db = null;
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$this->lastGc = null;
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$this->log = array();
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if(!defined('M_EULER')) {
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define('M_EULER', '0.57721566490153286061');
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}
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$this->fixedKarma = array(
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'phergie' => '%s has karma of awesome',
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'pi' => '%s has karma of ' . M_PI,
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'Î ' => '%s has karma of ' . M_PI,
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'Ï€' => '%s has karma of ' . M_PI,
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'chucknorris' => '%s has karma of Warning: Integer out of range',
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'chuck norris' => '%s has karma of Warning: Integer out of range',
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'c' => '%s has karma of 299 792 458 m/s',
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'e' => '%s has karma of ' . M_E,
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'euler' => '%s has karma of ' . M_EULER,
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'mole' => '%s has karma of 6.02214e23 molecules',
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'avogadro' => '%s has karma of 6.02214e23 molecules',
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'spoon' => '%s has no karma. There is no spoon',
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'mc^2' => '%s has karma of E',
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'mc2' => '%s has karma of E',
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'mc²' => '%s has karma of E',
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'i' => '%s haz big karma',
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'karma' => 'The karma law says that all living creatures are responsible for their karma - their actions and the effects of their actions. You should watch yours.'
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);
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$this->karmaBlacklist = array(
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'*',
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'all',
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'everything'
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);
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$this->positiveAnswers = array(
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'No kidding, %owner% totally kicks %owned%\'s ass !',
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'True that.',
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'I concur.',
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'Yay, %owner% ftw !',
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'%owner% is made of WIN!',
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'Nothing can beat %owner%!',
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);
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$this->negativeAnswers = array(
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'No sir, not at all.',
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'You\'re wrong dude, %owner% wins.',
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'I\'d say %owner% is better than %owned%.',
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'You must be joking, %owner% ftw!',
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'%owned% is made of LOSE!',
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'%owned% = Epic Fail',
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);
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// Load or initialize the database
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$class = new ReflectionClass(get_class($this));
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$dir = dirname($class->getFileName() . '/' . $this->name);
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$this->db = new PDO('sqlite:' . $dir . 'karma.db');
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// Check to see if the table exists
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$table = $this->db->query('
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SELECT COUNT(*)
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FROM sqlite_master
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WHERE name = ' . $this->db->quote('karmas')
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)->fetchColumn();
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// Create database tables if necessary
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if (!$table) {
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$this->db->query('
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CREATE TABLE karmas ( word VARCHAR ( 255 ), karma MEDIUMINT );
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CREATE UNIQUE INDEX word ON karmas ( word );
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CREATE INDEX karmaIndex ON karmas ( karma );
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CREATE TABLE comments ( wordid INT , comment VARCHAR ( 255 ) );
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CREATE INDEX wordidIndex ON comments ( wordid );
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CREATE UNIQUE INDEX commentUnique ON comments ( comment );
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');
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}
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$this->insertKarma = $this->db->prepare('
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INSERT INTO karmas (
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word,
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karma
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)
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VALUES (
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:word,
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:karma
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)
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');
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$this->insertComment = $this->db->prepare('
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INSERT INTO comments (
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wordid,
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comment
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)
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VALUES (
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:wordid,
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:comment
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)
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');
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$this->fetchKarma = $this->db->prepare('
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SELECT karma, ROWID id FROM karmas WHERE LOWER(word) = LOWER(:word) LIMIT 1
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');
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$this->updateKarma = $this->db->prepare('
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UPDATE karmas SET karma = :karma WHERE LOWER(word) = LOWER(:word)
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');
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}
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/**
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* Checks for dependencies.
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*
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* @return void
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*/
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public static function onLoad()
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{
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if (!extension_loaded('PDO') || !extension_loaded('pdo_sqlite')) {
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$this->fail('PDO and pdo_sqlite extensions must be installed');
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}
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}
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/**
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* Handles requests for incrementation, decrementation, or lookup of karma
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* ratings sent via messages from users.
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*
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* @return void
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*/
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public function onPrivmsg()
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{
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$source = $this->event->getSource();
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$message = $this->event->getArgument(1);
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$target = $this->event->getNick();
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// Command prefix check
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$prefix = preg_quote(trim($this->getConfig('command.prefix')));
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$bot = preg_quote($this->getConfig('connections.nick'));
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$exp = '(?:(?:' . $bot . '\s*[:,>]?\s+(?:' . $prefix . ')?)|(?:' . $prefix . '))';
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// Karma status request
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if (preg_match('#^' . $exp . 'karma\s+(.+)$#i', $message, $m)) {
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// Return user's value if "me" is requested
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if (strtolower($m[1]) === 'me') {
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$m[1] = $target;
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}
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// Clean the term
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$term = $this->doCleanWord($m[1]);
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// Check the blacklist
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if (is_array($this->karmaBlacklist) && in_array($term, $this->karmaBlacklist)) {
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$this->doNotice($target, $term . ' is blacklisted');
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return;
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}
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// Return fixed value if set
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if (isset($this->fixedKarma[$term])) {
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$this->doPrivmsg($source, $target . ': ' . sprintf($this->fixedKarma[$term], $m[1]) . '.');
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return;
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}
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// Return current karma or neutral if not set yet
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$this->fetchKarma->execute(array(':word'=>$term));
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$res = $this->fetchKarma->fetch(PDO::FETCH_ASSOC);
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// Sanity check if someone if someone prefixed their conversation with karma
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if (!$res && substr_count($term, ' ') > 1 && !(substr($m[1], 0, 1) === '(' && substr($m[1], -1) === ')')) {
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return;
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}
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// Clean the raw term if it was contained within brackets
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if (substr($m[1], 0, 1) === '(' && substr($m[1], -1) === ')') {
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$m[1] = substr($m[1], 1, -1);
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}
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if ($res && $res['karma'] != 0) {
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$this->doPrivmsg($source, $target . ': ' . $m[1] . ' has karma of ' . $res['karma'] . '.');
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} else {
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$this->doPrivmsg($source, $target . ': ' . $m[1] . ' has neutral karma.');
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}
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// Incrementation/decrementation request
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} elseif (preg_match('{^' . $exp . '?(?:(\+{2,2}|-{2,2})(\S+?|\(.+?\)+)|(\S+?|\(.+?\)+)(\+{2,2}|-{2,2}))(?:\s+(.*))?$}ix', $message, $m)) {
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if (!empty($m[4])) {
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$m[1] = $m[4]; // Increment/Decrement
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$m[2] = $m[3]; // Word
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}
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$m[3] = (isset($m[5]) ? $m[5] : null); // Comment
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unset($m[4], $m[5]);
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list(, $sign, $word, $comment) = array_pad($m, 4, null);
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// Clean the word
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$word = strtolower($this->doCleanWord($word));
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if (empty($word)) {
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return;
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}
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// Do nothing if the karma is fixed or blacklisted
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if (isset($this->fixedKarma[$word]) ||
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is_array($this->karmaBlacklist) && in_array($word, $this->karmaBlacklist)) {
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return;
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}
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// Force a decrementation if someone tries to update his own karma
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if ($word == strtolower($target) && $sign != '--' && !$this->fromAdmin(true)) {
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$this->doNotice($target, 'Bad ' . $target . '! You can not modify your own Karma. Shame on you!');
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$sign = '--';
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}
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// Antithrottling check
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$host = $this->event->getHost();
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$limit = $this->getConfig('karma.limit');
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// This is waiting on the Acl plugin from Elazar, being bypassed for now
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//if ($limit > 0 && !$this->fromAdmin()) {
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if ($limit > 0) {
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if (isset($this->log[$host][$word]) && $this->log[$host][$word] >= $limit) {
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// Three strikes, you're out, so lets decrement their karma for spammage
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if ($this->log[$host][$word] == ($limit+3)) {
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$this->doNotice($target, 'Bad ' . $target . '! Didn\'t I tell you that you reached your limit already?');
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$this->log[$host][$word] = $limit;
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$word = $target;
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$sign = '--';
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// Toss a notice to the user if they reached their limit
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} else {
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$this->doNotice($target, 'You have currently reached your limit in modifying ' . $word . ' for this day, please wait a bit.');
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$this->log[$host][$word]++;
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return;
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}
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} else {
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if (isset($this->log[$host][$word])) {
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$this->log[$host][$word]++;
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} else {
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$this->log[$host][$word] = 1;
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}
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}
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}
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// Get the current value then update or create entry
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$this->fetchKarma->execute(array(':word'=>$word));
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$res = $this->fetchKarma->fetch(PDO::FETCH_ASSOC);
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if ($res) {
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$karma = ($res['karma'] + ($sign == '++' ? 1 : -1));
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$args = array(
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':word' => $word,
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':karma' => $karma
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);
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$this->updateKarma->execute($args);
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} else {
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$karma = ($sign == '++' ? '1' : '-1');
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$args = array(
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':word' => $word,
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':karma' => $karma
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);
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$this->insertKarma->execute($args);
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$this->fetchKarma->execute(array(':word'=>$word));
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$res = $this->fetchKarma->fetch(PDO::FETCH_ASSOC);
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}
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$id = $res['id'];
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// Add comment
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$comment = preg_replace('{(?:^//(.*)|^#(.*)|^/\*(.*?)\*/$)}', '$1$2$3', $comment);
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if (!empty($comment)) {
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$this->insertComment->execute(array(':wordid' => $id, ':comment' => $comment));
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}
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// Perform garbage collection on the antithrottling log if needed
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if (date('d') !== $this->lastGc) {
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$this->doGc();
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}
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// Assertion request
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} elseif (preg_match('#^' . $exp . '?([^><]+)(<|>)([^><]+)$#', $message, $m)) {
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// Trim words
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$word1 = strtolower($this->doCleanWord($m[1]));
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$word2 = strtolower($this->doCleanWord($m[3]));
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$operator = $m[2];
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// Do nothing if the karma is fixed
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if (isset($this->fixedKarma[$word1]) || isset($this->fixedKarma[$word2]) ||
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empty($word1) || empty($word2)) {
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return;
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}
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// Fetch first word
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if ($word1 === '*' || $word1 === 'all' || $word1 === 'everything') {
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$res = array('karma' => 0);
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$word1 = 'everything';
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} else {
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$this->fetchKarma->execute(array(':word'=>$word1));
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$res = $this->fetchKarma->fetch(PDO::FETCH_ASSOC);
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}
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// If it exists, fetch second word
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if ($res) {
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if ($word2 === '*' || $word2 === 'all' || $word2 === 'everything') {
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$res2 = array('karma' => 0);
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$word2 = 'everything';
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} else {
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$this->fetchKarma->execute(array(':word'=>$word2));
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$res2 = $this->fetchKarma->fetch(PDO::FETCH_ASSOC);
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}
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// If it exists, compare and return value
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if ($res2 && $res['karma'] != $res2['karma']) {
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$assertion = ($operator === '<' && $res['karma'] < $res2['karma']) || ($operator === '>' && $res['karma'] > $res2['karma']);
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// Switch arguments if they are in the wrong order
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if ($operator === '<') {
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$tmp = $word2;
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$word2 = $word1;
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$word1 = $tmp;
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}
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$this->doPrivmsg($source, $assertion ? $this->fetchPositiveAnswer($word1, $word2) : $this->fetchNegativeAnswer($word1, $word2));
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// If someone asserts that something is greater or lesser than everything, we increment/decrement that something at the same time
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if ($word2 === 'everything') {
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$this->event = clone$this->event;
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$this->event->setArguments(array($this->event->getArgument(0), '++'.$word1));
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$this->onPrivmsg();
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} elseif ($word1 === 'everything') {
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$this->event = clone$this->event;
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$this->event->setArguments(array($this->event->getArgument(0), '--'.$word2));
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$this->onPrivmsg();
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}
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}
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}
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}
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}
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protected function fetchPositiveAnswer($owner, $owned)
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{
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return str_replace(array('%owner%','%owned%'), array($owner, $owned), $this->positiveAnswers[array_rand($this->positiveAnswers,1)]);
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}
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protected function fetchNegativeAnswer($owned, $owner)
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{
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return str_replace(array('%owner%','%owned%'), array($owner, $owned), $this->negativeAnswers[array_rand($this->negativeAnswers,1)]);
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}
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protected function doCleanWord($word)
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{
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$word = trim($word);
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if (substr($word, 0, 1) === '(' && substr($word, -1) === ')') {
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$word = trim(substr($word, 1, -1));
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}
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$word = preg_replace('#\s+#', ' ', strtolower(trim($word)));
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return $word;
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}
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/**
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* Performs garbage collection on the antithrottling log.
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*
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* @return void
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*/
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public function doGc()
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{
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unset($this->log);
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$this->log = array();
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$this->lastGc = date('d');
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}
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}
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