gnu-social/plugins/Irc/extlib/phergie/Phergie/Plugin/Karma.php

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