mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/AbuseFilter.git
synced 2024-12-01 00:56:26 +00:00
caa4b1c763
This is taken from I6a57a28f22600aafb2e529587ecce6083e9f7da4 and makes all the needed changes to make phan pass. Seccheck will instead fail, but since it's not clear how to fix it (and it is non-voting), for the moment we may merge this and enable phan on IC. Bug: T192325 Change-Id: I77648b6f8e146114fd43bb0f4dfccdb36b7ac1ac
1619 lines
38 KiB
PHP
1619 lines
38 KiB
PHP
<?php
|
|
|
|
use Wikimedia\Equivset\Equivset;
|
|
|
|
class AbuseFilterParser {
|
|
public $mCode, $mTokens, $mPos, $mCur, $mShortCircuit, $mAllowShort, $mLen;
|
|
|
|
/**
|
|
* @var AbuseFilterVariableHolder
|
|
*/
|
|
public $mVars;
|
|
|
|
// length,lcase,ucase,ccnorm,rmdoubles,specialratio,rmspecials,norm,count,get_matches
|
|
public static $mFunctions = [
|
|
'lcase' => 'funcLc',
|
|
'ucase' => 'funcUc',
|
|
'length' => 'funcLen',
|
|
'string' => 'castString',
|
|
'int' => 'castInt',
|
|
'float' => 'castFloat',
|
|
'bool' => 'castBool',
|
|
'norm' => 'funcNorm',
|
|
'ccnorm' => 'funcCCNorm',
|
|
'ccnorm_contains_any' => 'funcCCNormContainsAny',
|
|
'ccnorm_contains_all' => 'funcCCNormContainsAll',
|
|
'specialratio' => 'funcSpecialRatio',
|
|
'rmspecials' => 'funcRMSpecials',
|
|
'rmdoubles' => 'funcRMDoubles',
|
|
'rmwhitespace' => 'funcRMWhitespace',
|
|
'count' => 'funcCount',
|
|
'rcount' => 'funcRCount',
|
|
'get_matches' => 'funcGetMatches',
|
|
'ip_in_range' => 'funcIPInRange',
|
|
'contains_any' => 'funcContainsAny',
|
|
'contains_all' => 'funcContainsAll',
|
|
'equals_to_any' => 'funcEqualsToAny',
|
|
'substr' => 'funcSubstr',
|
|
'strlen' => 'funcLen',
|
|
'strpos' => 'funcStrPos',
|
|
'str_replace' => 'funcStrReplace',
|
|
'rescape' => 'funcStrRegexEscape',
|
|
'set' => 'funcSetVar',
|
|
'set_var' => 'funcSetVar',
|
|
];
|
|
|
|
// Functions that affect parser state, and shouldn't be cached.
|
|
public static $ActiveFunctions = [
|
|
'funcSetVar',
|
|
];
|
|
|
|
public static $mKeywords = [
|
|
'in' => 'keywordIn',
|
|
'like' => 'keywordLike',
|
|
'matches' => 'keywordLike',
|
|
'contains' => 'keywordContains',
|
|
'rlike' => 'keywordRegex',
|
|
'irlike' => 'keywordRegexInsensitive',
|
|
'regex' => 'keywordRegex',
|
|
];
|
|
|
|
public static $funcCache = [];
|
|
|
|
/**
|
|
* @var Equivset
|
|
*/
|
|
protected static $equivset;
|
|
|
|
/**
|
|
* Create a new instance
|
|
*
|
|
* @param AbuseFilterVariableHolder $vars
|
|
*/
|
|
public function __construct( $vars = null ) {
|
|
$this->resetState();
|
|
if ( $vars instanceof AbuseFilterVariableHolder ) {
|
|
$this->mVars = $vars;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Resets the state of the parser.
|
|
*/
|
|
public function resetState() {
|
|
$this->mCode = '';
|
|
$this->mTokens = [];
|
|
$this->mVars = new AbuseFilterVariableHolder;
|
|
$this->mPos = 0;
|
|
$this->mShortCircuit = false;
|
|
$this->mAllowShort = true;
|
|
}
|
|
|
|
/**
|
|
* @param string $filter
|
|
* @return array|bool
|
|
*/
|
|
public function checkSyntax( $filter ) {
|
|
$origAS = $this->mAllowShort;
|
|
try {
|
|
$this->mAllowShort = false;
|
|
$this->parse( $filter );
|
|
} catch ( AFPUserVisibleException $excep ) {
|
|
$this->mAllowShort = $origAS;
|
|
|
|
return [ $excep->getMessageObj()->text(), $excep->mPosition ];
|
|
}
|
|
$this->mAllowShort = $origAS;
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @param string $name
|
|
* @param mixed $value
|
|
*/
|
|
public function setVar( $name, $value ) {
|
|
$this->mVars->setVar( $name, $value );
|
|
}
|
|
|
|
/**
|
|
* @param mixed $vars
|
|
*/
|
|
public function setVars( $vars ) {
|
|
if ( is_array( $vars ) ) {
|
|
foreach ( $vars as $name => $var ) {
|
|
$this->setVar( $name, $var );
|
|
}
|
|
} elseif ( $vars instanceof AbuseFilterVariableHolder ) {
|
|
$this->mVars->addHolders( $vars );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Move to the next token
|
|
*/
|
|
protected function move() {
|
|
list( $this->mCur, $this->mPos ) = $this->mTokens[$this->mPos];
|
|
}
|
|
|
|
/**
|
|
* getState() function allows parser state to be rollbacked to several tokens back
|
|
* @return AFPParserState
|
|
*/
|
|
protected function getState() {
|
|
return new AFPParserState( $this->mCur, $this->mPos );
|
|
}
|
|
|
|
/**
|
|
* setState() function allows parser state to be rollbacked to several tokens back
|
|
* @param AFPParserState $state
|
|
*/
|
|
protected function setState( AFPParserState $state ) {
|
|
$this->mCur = $state->token;
|
|
$this->mPos = $state->pos;
|
|
}
|
|
|
|
/**
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function skipOverBraces() {
|
|
if ( !( $this->mCur->type == AFPToken::TBRACE && $this->mCur->value == '(' ) ||
|
|
!$this->mShortCircuit
|
|
) {
|
|
return;
|
|
}
|
|
|
|
$braces = 1;
|
|
while ( $this->mCur->type != AFPToken::TNONE && $braces > 0 ) {
|
|
$this->move();
|
|
if ( $this->mCur->type == AFPToken::TBRACE ) {
|
|
if ( $this->mCur->value == '(' ) {
|
|
$braces++;
|
|
} elseif ( $this->mCur->value == ')' ) {
|
|
$braces--;
|
|
}
|
|
}
|
|
}
|
|
if ( !( $this->mCur->type == AFPToken::TBRACE && $this->mCur->value == ')' ) ) {
|
|
throw new AFPUserVisibleException( 'expectednotfound', $this->mCur->pos, [ ')' ] );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param string $code
|
|
* @return bool
|
|
*/
|
|
public function parse( $code ) {
|
|
return $this->intEval( $code )->toBool();
|
|
}
|
|
|
|
/**
|
|
* @param string $filter
|
|
* @return string
|
|
*/
|
|
public function evaluateExpression( $filter ) {
|
|
return $this->intEval( $filter )->toString();
|
|
}
|
|
|
|
/**
|
|
* @param string $code
|
|
* @return AFPData
|
|
*/
|
|
public function intEval( $code ) {
|
|
// Setup, resetting
|
|
$this->mCode = $code;
|
|
$this->mTokens = AbuseFilterTokenizer::tokenize( $code );
|
|
$this->mPos = 0;
|
|
$this->mLen = strlen( $code );
|
|
$this->mShortCircuit = false;
|
|
|
|
$result = new AFPData();
|
|
$this->doLevelEntry( $result );
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* @param string $a
|
|
* @param string $b
|
|
* @return int
|
|
*/
|
|
public static function lengthCompare( $a, $b ) {
|
|
if ( strlen( $a ) == strlen( $b ) ) {
|
|
return 0;
|
|
}
|
|
|
|
return ( strlen( $a ) < strlen( $b ) ) ? -1 : 1;
|
|
}
|
|
|
|
/* Levels */
|
|
|
|
/**
|
|
* Handles unexpected characters after the expression
|
|
*
|
|
* @param AFPData &$result
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function doLevelEntry( &$result ) {
|
|
$this->doLevelSemicolon( $result );
|
|
|
|
if ( $this->mCur->type != AFPToken::TNONE ) {
|
|
throw new AFPUserVisibleException(
|
|
'unexpectedatend',
|
|
$this->mCur->pos, [ $this->mCur->type ]
|
|
);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Handles multiple expressions
|
|
* @param AFPData &$result
|
|
*/
|
|
protected function doLevelSemicolon( &$result ) {
|
|
do {
|
|
$this->move();
|
|
if ( $this->mCur->type != AFPToken::TSTATEMENTSEPARATOR ) {
|
|
$this->doLevelSet( $result );
|
|
}
|
|
} while ( $this->mCur->type == AFPToken::TSTATEMENTSEPARATOR );
|
|
}
|
|
|
|
/**
|
|
* Handles multiple expressions
|
|
*
|
|
* @param AFPData &$result
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function doLevelSet( &$result ) {
|
|
if ( $this->mCur->type == AFPToken::TID ) {
|
|
$varname = $this->mCur->value;
|
|
$prev = $this->getState();
|
|
$this->move();
|
|
|
|
if ( $this->mCur->type == AFPToken::TOP && $this->mCur->value == ':=' ) {
|
|
$this->move();
|
|
$this->doLevelSet( $result );
|
|
$this->setUserVariable( $varname, $result );
|
|
|
|
return;
|
|
} elseif ( $this->mCur->type == AFPToken::TSQUAREBRACKET && $this->mCur->value == '[' ) {
|
|
if ( !$this->mVars->varIsSet( $varname ) ) {
|
|
throw new AFPUserVisibleException( 'unrecognisedvar',
|
|
$this->mCur->pos,
|
|
[ $varname ]
|
|
);
|
|
}
|
|
$list = $this->mVars->getVar( $varname );
|
|
if ( $list->type != AFPData::DLIST ) {
|
|
throw new AFPUserVisibleException( 'notlist', $this->mCur->pos, [] );
|
|
}
|
|
$list = $list->toList();
|
|
$this->move();
|
|
if ( $this->mCur->type == AFPToken::TSQUAREBRACKET && $this->mCur->value == ']' ) {
|
|
$idx = 'new';
|
|
} else {
|
|
$this->setState( $prev );
|
|
$this->move();
|
|
$idx = new AFPData();
|
|
$this->doLevelSemicolon( $idx );
|
|
$idx = $idx->toInt();
|
|
if ( !( $this->mCur->type == AFPToken::TSQUAREBRACKET && $this->mCur->value == ']' ) ) {
|
|
throw new AFPUserVisibleException( 'expectednotfound', $this->mCur->pos,
|
|
[ ']', $this->mCur->type, $this->mCur->value ] );
|
|
}
|
|
if ( count( $list ) <= $idx ) {
|
|
throw new AFPUserVisibleException( 'outofbounds', $this->mCur->pos,
|
|
[ $idx, count( $result->data ) ] );
|
|
}
|
|
}
|
|
$this->move();
|
|
if ( $this->mCur->type == AFPToken::TOP && $this->mCur->value == ':=' ) {
|
|
$this->move();
|
|
$this->doLevelSet( $result );
|
|
if ( $idx === 'new' ) {
|
|
$list[] = $result;
|
|
} else {
|
|
$list[$idx] = $result;
|
|
}
|
|
$this->setUserVariable( $varname, new AFPData( AFPData::DLIST, $list ) );
|
|
|
|
return;
|
|
} else {
|
|
$this->setState( $prev );
|
|
}
|
|
} else {
|
|
$this->setState( $prev );
|
|
}
|
|
}
|
|
$this->doLevelConditions( $result );
|
|
}
|
|
|
|
/**
|
|
* @param AFPData &$result
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function doLevelConditions( &$result ) {
|
|
if ( $this->mCur->type == AFPToken::TKEYWORD && $this->mCur->value == 'if' ) {
|
|
$this->move();
|
|
$this->doLevelBoolOps( $result );
|
|
|
|
if ( !( $this->mCur->type == AFPToken::TKEYWORD && $this->mCur->value == 'then' ) ) {
|
|
throw new AFPUserVisibleException( 'expectednotfound',
|
|
$this->mCur->pos,
|
|
[
|
|
'then',
|
|
$this->mCur->type,
|
|
$this->mCur->value
|
|
]
|
|
);
|
|
}
|
|
$this->move();
|
|
|
|
$r1 = new AFPData();
|
|
$r2 = new AFPData();
|
|
|
|
$isTrue = $result->toBool();
|
|
|
|
if ( !$isTrue ) {
|
|
$scOrig = $this->mShortCircuit;
|
|
$this->mShortCircuit = $this->mAllowShort;
|
|
}
|
|
$this->doLevelConditions( $r1 );
|
|
if ( !$isTrue ) {
|
|
$this->mShortCircuit = $scOrig;
|
|
}
|
|
|
|
if ( !( $this->mCur->type == AFPToken::TKEYWORD && $this->mCur->value == 'else' ) ) {
|
|
throw new AFPUserVisibleException( 'expectednotfound',
|
|
$this->mCur->pos,
|
|
[
|
|
'else',
|
|
$this->mCur->type,
|
|
$this->mCur->value
|
|
]
|
|
);
|
|
}
|
|
$this->move();
|
|
|
|
if ( $isTrue ) {
|
|
$scOrig = $this->mShortCircuit;
|
|
$this->mShortCircuit = $this->mAllowShort;
|
|
}
|
|
$this->doLevelConditions( $r2 );
|
|
if ( $isTrue ) {
|
|
$this->mShortCircuit = $scOrig;
|
|
}
|
|
|
|
if ( !( $this->mCur->type == AFPToken::TKEYWORD && $this->mCur->value == 'end' ) ) {
|
|
throw new AFPUserVisibleException( 'expectednotfound',
|
|
$this->mCur->pos,
|
|
[
|
|
'end',
|
|
$this->mCur->type,
|
|
$this->mCur->value
|
|
]
|
|
);
|
|
}
|
|
$this->move();
|
|
|
|
if ( $result->toBool() ) {
|
|
$result = $r1;
|
|
} else {
|
|
$result = $r2;
|
|
}
|
|
} else {
|
|
$this->doLevelBoolOps( $result );
|
|
if ( $this->mCur->type == AFPToken::TOP && $this->mCur->value == '?' ) {
|
|
$this->move();
|
|
$r1 = new AFPData();
|
|
$r2 = new AFPData();
|
|
|
|
$isTrue = $result->toBool();
|
|
|
|
if ( !$isTrue ) {
|
|
$scOrig = $this->mShortCircuit;
|
|
$this->mShortCircuit = $this->mAllowShort;
|
|
}
|
|
$this->doLevelConditions( $r1 );
|
|
if ( !$isTrue ) {
|
|
$this->mShortCircuit = $scOrig;
|
|
}
|
|
|
|
if ( !( $this->mCur->type == AFPToken::TOP && $this->mCur->value == ':' ) ) {
|
|
throw new AFPUserVisibleException( 'expectednotfound',
|
|
$this->mCur->pos,
|
|
[
|
|
':',
|
|
$this->mCur->type,
|
|
$this->mCur->value
|
|
]
|
|
);
|
|
}
|
|
$this->move();
|
|
|
|
if ( $isTrue ) {
|
|
$scOrig = $this->mShortCircuit;
|
|
$this->mShortCircuit = $this->mAllowShort;
|
|
}
|
|
$this->doLevelConditions( $r2 );
|
|
if ( $isTrue ) {
|
|
$this->mShortCircuit = $scOrig;
|
|
}
|
|
|
|
if ( $isTrue ) {
|
|
$result = $r1;
|
|
} else {
|
|
$result = $r2;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param AFPData &$result
|
|
*/
|
|
protected function doLevelBoolOps( &$result ) {
|
|
$this->doLevelCompares( $result );
|
|
$ops = [ '&', '|', '^' ];
|
|
while ( $this->mCur->type == AFPToken::TOP && in_array( $this->mCur->value, $ops ) ) {
|
|
$op = $this->mCur->value;
|
|
$this->move();
|
|
$r2 = new AFPData();
|
|
|
|
// We can go on quickly as either one statement with | is true or on with & is false
|
|
if ( ( $op == '&' && !$result->toBool() ) || ( $op == '|' && $result->toBool() ) ) {
|
|
$orig = $this->mShortCircuit;
|
|
$this->mShortCircuit = $this->mAllowShort;
|
|
$this->doLevelCompares( $r2 );
|
|
$this->mShortCircuit = $orig;
|
|
$result = new AFPData( AFPData::DBOOL, $result->toBool() );
|
|
continue;
|
|
}
|
|
|
|
$this->doLevelCompares( $r2 );
|
|
|
|
$result = AFPData::boolOp( $result, $r2, $op );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param AFPData &$result
|
|
*/
|
|
protected function doLevelCompares( &$result ) {
|
|
$this->doLevelSumRels( $result );
|
|
$ops = [ '==', '===', '!=', '!==', '<', '>', '<=', '>=', '=' ];
|
|
while ( $this->mCur->type == AFPToken::TOP && in_array( $this->mCur->value, $ops ) ) {
|
|
$op = $this->mCur->value;
|
|
$this->move();
|
|
$r2 = new AFPData();
|
|
$this->doLevelSumRels( $r2 );
|
|
if ( $this->mShortCircuit ) {
|
|
// The result doesn't matter.
|
|
break;
|
|
}
|
|
AbuseFilter::triggerLimiter();
|
|
$result = AFPData::compareOp( $result, $r2, $op );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param AFPData &$result
|
|
*/
|
|
protected function doLevelSumRels( &$result ) {
|
|
$this->doLevelMulRels( $result );
|
|
$ops = [ '+', '-' ];
|
|
while ( $this->mCur->type == AFPToken::TOP && in_array( $this->mCur->value, $ops ) ) {
|
|
$op = $this->mCur->value;
|
|
$this->move();
|
|
$r2 = new AFPData();
|
|
$this->doLevelMulRels( $r2 );
|
|
if ( $this->mShortCircuit ) {
|
|
// The result doesn't matter.
|
|
break;
|
|
}
|
|
if ( $op == '+' ) {
|
|
$result = AFPData::sum( $result, $r2 );
|
|
}
|
|
if ( $op == '-' ) {
|
|
$result = AFPData::sub( $result, $r2 );
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param AFPData &$result
|
|
*/
|
|
protected function doLevelMulRels( &$result ) {
|
|
$this->doLevelPow( $result );
|
|
$ops = [ '*', '/', '%' ];
|
|
while ( $this->mCur->type == AFPToken::TOP && in_array( $this->mCur->value, $ops ) ) {
|
|
$op = $this->mCur->value;
|
|
$this->move();
|
|
$r2 = new AFPData();
|
|
$this->doLevelPow( $r2 );
|
|
if ( $this->mShortCircuit ) {
|
|
// The result doesn't matter.
|
|
break;
|
|
}
|
|
$result = AFPData::mulRel( $result, $r2, $op, $this->mCur->pos );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param AFPData &$result
|
|
*/
|
|
protected function doLevelPow( &$result ) {
|
|
$this->doLevelBoolInvert( $result );
|
|
while ( $this->mCur->type == AFPToken::TOP && $this->mCur->value == '**' ) {
|
|
$this->move();
|
|
$expanent = new AFPData();
|
|
$this->doLevelBoolInvert( $expanent );
|
|
if ( $this->mShortCircuit ) {
|
|
// The result doesn't matter.
|
|
break;
|
|
}
|
|
$result = AFPData::pow( $result, $expanent );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param AFPData &$result
|
|
*/
|
|
protected function doLevelBoolInvert( &$result ) {
|
|
if ( $this->mCur->type == AFPToken::TOP && $this->mCur->value == '!' ) {
|
|
$this->move();
|
|
$this->doLevelSpecialWords( $result );
|
|
if ( $this->mShortCircuit ) {
|
|
// The result doesn't matter.
|
|
return;
|
|
}
|
|
$result = AFPData::boolInvert( $result );
|
|
} else {
|
|
$this->doLevelSpecialWords( $result );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param AFPData &$result
|
|
*/
|
|
protected function doLevelSpecialWords( &$result ) {
|
|
$this->doLevelUnarys( $result );
|
|
$keyword = strtolower( $this->mCur->value );
|
|
if ( $this->mCur->type == AFPToken::TKEYWORD
|
|
&& in_array( $keyword, array_keys( self::$mKeywords ) )
|
|
) {
|
|
$func = self::$mKeywords[$keyword];
|
|
$this->move();
|
|
$r2 = new AFPData();
|
|
$this->doLevelUnarys( $r2 );
|
|
|
|
if ( $this->mShortCircuit ) {
|
|
// The result doesn't matter.
|
|
return;
|
|
}
|
|
|
|
AbuseFilter::triggerLimiter();
|
|
|
|
$result = AFPData::$func( $result, $r2, $this->mCur->pos );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param AFPData &$result
|
|
*/
|
|
protected function doLevelUnarys( &$result ) {
|
|
$op = $this->mCur->value;
|
|
if ( $this->mCur->type == AFPToken::TOP && ( $op == "+" || $op == "-" ) ) {
|
|
$this->move();
|
|
$this->doLevelListElements( $result );
|
|
if ( $this->mShortCircuit ) {
|
|
// The result doesn't matter.
|
|
return;
|
|
}
|
|
if ( $op == '-' ) {
|
|
$result = AFPData::unaryMinus( $result );
|
|
}
|
|
} else {
|
|
$this->doLevelListElements( $result );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param AFPData &$result
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function doLevelListElements( &$result ) {
|
|
$this->doLevelBraces( $result );
|
|
while ( $this->mCur->type == AFPToken::TSQUAREBRACKET && $this->mCur->value == '[' ) {
|
|
$idx = new AFPData();
|
|
$this->doLevelSemicolon( $idx );
|
|
if ( !( $this->mCur->type == AFPToken::TSQUAREBRACKET && $this->mCur->value == ']' ) ) {
|
|
throw new AFPUserVisibleException( 'expectednotfound', $this->mCur->pos,
|
|
[ ']', $this->mCur->type, $this->mCur->value ] );
|
|
}
|
|
$idx = $idx->toInt();
|
|
if ( $result->type == AFPData::DLIST ) {
|
|
if ( count( $result->data ) <= $idx ) {
|
|
throw new AFPUserVisibleException( 'outofbounds', $this->mCur->pos,
|
|
[ $idx, count( $result->data ) ] );
|
|
}
|
|
$result = $result->data[$idx];
|
|
} else {
|
|
throw new AFPUserVisibleException( 'notlist', $this->mCur->pos, [] );
|
|
}
|
|
$this->move();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param AFPData &$result
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function doLevelBraces( &$result ) {
|
|
if ( $this->mCur->type == AFPToken::TBRACE && $this->mCur->value == '(' ) {
|
|
if ( $this->mShortCircuit ) {
|
|
$this->skipOverBraces();
|
|
} else {
|
|
$this->doLevelSemicolon( $result );
|
|
}
|
|
if ( !( $this->mCur->type == AFPToken::TBRACE && $this->mCur->value == ')' ) ) {
|
|
throw new AFPUserVisibleException(
|
|
'expectednotfound',
|
|
$this->mCur->pos,
|
|
[ ')', $this->mCur->type, $this->mCur->value ]
|
|
);
|
|
}
|
|
$this->move();
|
|
} else {
|
|
$this->doLevelFunction( $result );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param AFPData &$result
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function doLevelFunction( &$result ) {
|
|
if ( $this->mCur->type == AFPToken::TID && isset( self::$mFunctions[$this->mCur->value] ) ) {
|
|
$func = self::$mFunctions[$this->mCur->value];
|
|
$this->move();
|
|
if ( $this->mCur->type != AFPToken::TBRACE || $this->mCur->value != '(' ) {
|
|
throw new AFPUserVisibleException( 'expectednotfound',
|
|
$this->mCur->pos,
|
|
[
|
|
'(',
|
|
$this->mCur->type,
|
|
$this->mCur->value
|
|
]
|
|
);
|
|
}
|
|
|
|
if ( $this->mShortCircuit ) {
|
|
$this->skipOverBraces();
|
|
$this->move();
|
|
|
|
// The result doesn't matter.
|
|
return;
|
|
}
|
|
|
|
$args = [];
|
|
do {
|
|
$r = new AFPData();
|
|
$this->doLevelSemicolon( $r );
|
|
$args[] = $r;
|
|
} while ( $this->mCur->type == AFPToken::TCOMMA );
|
|
|
|
if ( $this->mCur->type != AFPToken::TBRACE || $this->mCur->value != ')' ) {
|
|
throw new AFPUserVisibleException( 'expectednotfound',
|
|
$this->mCur->pos,
|
|
[
|
|
')',
|
|
$this->mCur->type,
|
|
$this->mCur->value
|
|
]
|
|
);
|
|
}
|
|
$this->move();
|
|
|
|
$funcHash = md5( $func . serialize( $args ) );
|
|
|
|
if ( isset( self::$funcCache[$funcHash] ) &&
|
|
!in_array( $func, self::$ActiveFunctions )
|
|
) {
|
|
$result = self::$funcCache[$funcHash];
|
|
} else {
|
|
AbuseFilter::triggerLimiter();
|
|
$result = self::$funcCache[$funcHash] = $this->$func( $args );
|
|
}
|
|
|
|
if ( count( self::$funcCache ) > 1000 ) {
|
|
self::$funcCache = [];
|
|
}
|
|
} else {
|
|
$this->doLevelAtom( $result );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param AFPData &$result
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function doLevelAtom( &$result ) {
|
|
$tok = $this->mCur->value;
|
|
switch ( $this->mCur->type ) {
|
|
case AFPToken::TID:
|
|
if ( $this->mShortCircuit ) {
|
|
break;
|
|
}
|
|
$var = strtolower( $tok );
|
|
$result = $this->getVarValue( $var );
|
|
break;
|
|
case AFPToken::TSTRING:
|
|
$result = new AFPData( AFPData::DSTRING, $tok );
|
|
break;
|
|
case AFPToken::TFLOAT:
|
|
$result = new AFPData( AFPData::DFLOAT, $tok );
|
|
break;
|
|
case AFPToken::TINT:
|
|
$result = new AFPData( AFPData::DINT, $tok );
|
|
break;
|
|
case AFPToken::TKEYWORD:
|
|
if ( $tok == "true" ) {
|
|
$result = new AFPData( AFPData::DBOOL, true );
|
|
} elseif ( $tok == "false" ) {
|
|
$result = new AFPData( AFPData::DBOOL, false );
|
|
} elseif ( $tok == "null" ) {
|
|
$result = new AFPData();
|
|
} else {
|
|
throw new AFPUserVisibleException(
|
|
'unrecognisedkeyword',
|
|
$this->mCur->pos,
|
|
[ $tok ]
|
|
);
|
|
}
|
|
break;
|
|
case AFPToken::TNONE:
|
|
// Handled at entry level
|
|
return;
|
|
case AFPToken::TBRACE:
|
|
if ( $this->mCur->value == ')' ) {
|
|
// Handled at the entry level
|
|
return;
|
|
}
|
|
case AFPToken::TSQUAREBRACKET:
|
|
if ( $this->mCur->value == '[' ) {
|
|
$list = [];
|
|
while ( true ) {
|
|
$this->move();
|
|
if ( $this->mCur->type == AFPToken::TSQUAREBRACKET && $this->mCur->value == ']' ) {
|
|
break;
|
|
}
|
|
$item = new AFPData();
|
|
$this->doLevelSet( $item );
|
|
$list[] = $item;
|
|
if ( $this->mCur->type == AFPToken::TSQUAREBRACKET && $this->mCur->value == ']' ) {
|
|
break;
|
|
}
|
|
if ( $this->mCur->type != AFPToken::TCOMMA ) {
|
|
throw new AFPUserVisibleException(
|
|
'expectednotfound',
|
|
$this->mCur->pos,
|
|
[ ', or ]', $this->mCur->type, $this->mCur->value ]
|
|
);
|
|
}
|
|
}
|
|
$result = new AFPData( AFPData::DLIST, $list );
|
|
break;
|
|
}
|
|
default:
|
|
throw new AFPUserVisibleException(
|
|
'unexpectedtoken',
|
|
$this->mCur->pos,
|
|
[
|
|
$this->mCur->type,
|
|
$this->mCur->value
|
|
]
|
|
);
|
|
}
|
|
$this->move();
|
|
}
|
|
|
|
/* End of levels */
|
|
|
|
/**
|
|
* @param string $var
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function getVarValue( $var ) {
|
|
$var = strtolower( $var );
|
|
$builderValues = AbuseFilter::getBuilderValues();
|
|
if ( !( array_key_exists( $var, $builderValues['vars'] )
|
|
|| $this->mVars->varIsSet( $var ) )
|
|
) {
|
|
// If the variable is invalid, throw an exception
|
|
throw new AFPUserVisibleException(
|
|
'unrecognisedvar',
|
|
$this->mCur->pos,
|
|
[ $var ]
|
|
);
|
|
} else {
|
|
return $this->mVars->getVar( $var );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param string $name
|
|
* @param mixed $value
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function setUserVariable( $name, $value ) {
|
|
$builderValues = AbuseFilter::getBuilderValues();
|
|
if ( array_key_exists( $name, $builderValues['vars'] ) ) {
|
|
throw new AFPUserVisibleException( 'overridebuiltin', $this->mCur->pos, [ $name ] );
|
|
}
|
|
$this->mVars->setVar( $name, $value );
|
|
}
|
|
|
|
// Built-in functions
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcLc( $args ) {
|
|
global $wgContLang;
|
|
if ( count( $args ) < 1 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'lc', 2, count( $args ) ]
|
|
);
|
|
}
|
|
$s = $args[0]->toString();
|
|
|
|
return new AFPData( AFPData::DSTRING, $wgContLang->lc( $s ) );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcUc( $args ) {
|
|
global $wgContLang;
|
|
if ( count( $args ) < 1 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'uc', 2, count( $args ) ]
|
|
);
|
|
}
|
|
$s = $args[0]->toString();
|
|
|
|
return new AFPData( AFPData::DSTRING, $wgContLang->uc( $s ) );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcLen( $args ) {
|
|
if ( count( $args ) < 1 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'len', 2, count( $args ) ]
|
|
);
|
|
}
|
|
if ( $args[0]->type == AFPData::DLIST ) {
|
|
// Don't use toString on lists, but count
|
|
return new AFPData( AFPData::DINT, count( $args[0]->data ) );
|
|
}
|
|
$s = $args[0]->toString();
|
|
|
|
return new AFPData( AFPData::DINT, mb_strlen( $s, 'utf-8' ) );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcSimpleNorm( $args ) {
|
|
if ( count( $args ) < 1 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'simplenorm', 2, count( $args ) ]
|
|
);
|
|
}
|
|
$s = $args[0]->toString();
|
|
|
|
$s = preg_replace( '/[\d\W]+/', '', $s );
|
|
$s = strtolower( $s );
|
|
|
|
return new AFPData( AFPData::DSTRING, $s );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcSpecialRatio( $args ) {
|
|
if ( count( $args ) < 1 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'specialratio', 1, count( $args ) ]
|
|
);
|
|
}
|
|
$s = $args[0]->toString();
|
|
|
|
if ( !strlen( $s ) ) {
|
|
return new AFPData( AFPData::DFLOAT, 0 );
|
|
}
|
|
|
|
$nospecials = $this->rmspecials( $s );
|
|
|
|
$val = 1. - ( ( mb_strlen( $nospecials ) / mb_strlen( $s ) ) );
|
|
|
|
return new AFPData( AFPData::DFLOAT, $val );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcCount( $args ) {
|
|
if ( count( $args ) < 1 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'count', 1, count( $args ) ]
|
|
);
|
|
}
|
|
|
|
if ( $args[0]->type == AFPData::DLIST && count( $args ) == 1 ) {
|
|
return new AFPData( AFPData::DINT, count( $args[0]->data ) );
|
|
}
|
|
|
|
if ( count( $args ) == 1 ) {
|
|
$count = count( explode( ',', $args[0]->toString() ) );
|
|
} else {
|
|
$needle = $args[0]->toString();
|
|
$haystack = $args[1]->toString();
|
|
|
|
// T62203: Keep empty parameters from causing PHP warnings
|
|
if ( $needle === '' ) {
|
|
$count = 0;
|
|
} else {
|
|
$count = substr_count( $haystack, $needle );
|
|
}
|
|
}
|
|
|
|
return new AFPData( AFPData::DINT, $count );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
* @throws Exception
|
|
*/
|
|
protected function funcRCount( $args ) {
|
|
if ( count( $args ) < 1 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'rcount', 1, count( $args ) ]
|
|
);
|
|
}
|
|
|
|
if ( count( $args ) == 1 ) {
|
|
$count = count( explode( ',', $args[0]->toString() ) );
|
|
} else {
|
|
$needle = $args[0]->toString();
|
|
$haystack = $args[1]->toString();
|
|
|
|
// Munge the regex
|
|
$needle = preg_replace( '!(\\\\\\\\)*(\\\\)?/!', '$1\/', $needle );
|
|
$needle = "/$needle/u";
|
|
|
|
// Omit the '$matches' argument to avoid computing them, just count.
|
|
$count = preg_match_all( $needle, $haystack );
|
|
|
|
if ( $count === false ) {
|
|
throw new AFPUserVisibleException(
|
|
'regexfailure',
|
|
$this->mCur->pos,
|
|
[ 'unspecified error in preg_match_all()', $needle ]
|
|
);
|
|
}
|
|
}
|
|
|
|
return new AFPData( AFPData::DINT, $count );
|
|
}
|
|
|
|
/**
|
|
* Returns an array of matches of needle in the haystack, the first one for the whole regex,
|
|
* the other ones for every capturing group.
|
|
*
|
|
* @param array $args
|
|
* @return AFPData A list of matches.
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcGetMatches( $args ) {
|
|
if ( count( $args ) < 2 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'get_matches', 2, count( $args ) ]
|
|
);
|
|
}
|
|
$needle = $args[0]->toString();
|
|
$haystack = $args[1]->toString();
|
|
|
|
// Count the amount of capturing groups in the submitted pattern.
|
|
// This way we can return a fixed-dimension array, much easier to manage.
|
|
// First, strip away escaped parentheses
|
|
$sanitized = preg_replace( '/(\\\\\\\\)*\\\\\(/', '', $needle );
|
|
// Then strip starting parentheses of non-capturing groups
|
|
// (also atomics, lookahead and so on, even if not every of them is supported)
|
|
$sanitized = preg_replace( '/\(\?/', '', $sanitized );
|
|
// Finally create an array of falses with dimension = # of capturing groups
|
|
$groupscount = substr_count( $sanitized, '(' ) + 1;
|
|
$falsy = array_fill( 0, $groupscount, false );
|
|
|
|
// Munge the regex by escaping slashes
|
|
$needle = preg_replace( '!(\\\\\\\\)*(\\\\)?/!', '$1\/', $needle );
|
|
$needle = "/$needle/u";
|
|
|
|
// Suppress and restore are here for the same reason as T177744
|
|
Wikimedia\suppressWarnings();
|
|
$check = preg_match( $needle, $haystack, $matches );
|
|
Wikimedia\restoreWarnings();
|
|
|
|
if ( $check === false ) {
|
|
throw new AFPUserVisibleException(
|
|
'regexfailure',
|
|
$this->mCur->pos,
|
|
[ 'unspecified error in preg_match()', $needle ]
|
|
);
|
|
}
|
|
|
|
// Returned array has non-empty positions identical to the ones returned
|
|
// by the third parameter of a standard preg_match call ($matches in this case).
|
|
// We want an union with falsy to return a fixed-dimention array.
|
|
return AFPData::newFromPHPVar( $matches + $falsy );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcIPInRange( $args ) {
|
|
if ( count( $args ) < 2 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'ip_in_range', 2, count( $args ) ]
|
|
);
|
|
}
|
|
|
|
$ip = $args[0]->toString();
|
|
$range = $args[1]->toString();
|
|
|
|
$result = IP::isInRange( $ip, $range );
|
|
|
|
return new AFPData( AFPData::DBOOL, $result );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcCCNorm( $args ) {
|
|
if ( count( $args ) < 1 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'ccnorm', 1, count( $args ) ]
|
|
);
|
|
}
|
|
$s = $args[0]->toString();
|
|
|
|
$s = html_entity_decode( $s, ENT_QUOTES, 'UTF-8' );
|
|
$s = $this->ccnorm( $s );
|
|
|
|
return new AFPData( AFPData::DSTRING, $s );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcContainsAny( $args ) {
|
|
if ( count( $args ) < 2 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'contains_any', 2, count( $args ) ]
|
|
);
|
|
}
|
|
|
|
$s = array_shift( $args );
|
|
|
|
return new AFPData( AFPData::DBOOL, self::contains( $s, $args, true ) );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcContainsAll( $args ) {
|
|
if ( count( $args ) < 2 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'contains_all', 2, count( $args ) ]
|
|
);
|
|
}
|
|
|
|
$s = array_shift( $args );
|
|
|
|
return new AFPData( AFPData::DBOOL, self::contains( $s, $args, false, false ) );
|
|
}
|
|
|
|
/**
|
|
* Normalize and search a string for multiple substrings in OR mode
|
|
*
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcCCNormContainsAny( $args ) {
|
|
if ( count( $args ) < 2 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'ccnorm_contains_any', 2, count( $args ) ]
|
|
);
|
|
}
|
|
|
|
$s = array_shift( $args );
|
|
|
|
return new AFPData( AFPData::DBOOL, self::contains( $s, $args, true, true ) );
|
|
}
|
|
|
|
/**
|
|
* Normalize and search a string for multiple substrings in AND mode
|
|
*
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcCCNormContainsAll( $args ) {
|
|
if ( count( $args ) < 2 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'ccnorm_contains_all', 2, count( $args ) ]
|
|
);
|
|
}
|
|
|
|
$s = array_shift( $args );
|
|
|
|
return new AFPData( AFPData::DBOOL, self::contains( $s, $args, false, true ) );
|
|
}
|
|
|
|
/**
|
|
* Search for substrings in a string
|
|
*
|
|
* Use is_any to determine wether to use logic OR (true) or AND (false).
|
|
*
|
|
* Use normalize = true to make use of ccnorm and
|
|
* normalize both sides of the search.
|
|
*
|
|
* @param AFPData $string
|
|
* @param AFPData[] $values
|
|
* @param bool $is_any
|
|
* @param bool $normalize
|
|
*
|
|
* @return bool
|
|
*/
|
|
protected static function contains( $string, $values, $is_any = true, $normalize = false ) {
|
|
$string = $string->toString();
|
|
|
|
if ( $string === '' ) {
|
|
return false;
|
|
}
|
|
|
|
if ( $normalize ) {
|
|
$string = self::ccnorm( $string );
|
|
}
|
|
|
|
foreach ( $values as $needle ) {
|
|
$needle = $needle->toString();
|
|
if ( $normalize ) {
|
|
$needle = self::ccnorm( $needle );
|
|
}
|
|
if ( $needle === '' ) {
|
|
// T62203: Keep empty parameters from causing PHP warnings
|
|
continue;
|
|
}
|
|
|
|
$is_found = strpos( $string, $needle ) !== false;
|
|
if ( $is_found === $is_any ) {
|
|
// If I'm here and it's ANY (OR) it means that something is found.
|
|
// Just enough! Found!
|
|
// If I'm here and it's ALL (AND) it means that something isn't found.
|
|
// Just enough! Not found!
|
|
return $is_found;
|
|
}
|
|
}
|
|
|
|
// If I'm here and it's ANY (OR) it means that nothing was found:
|
|
// return false (because $is_any is true)
|
|
// If I'm here and it's ALL (AND) it means that everything were found:
|
|
// return true (because $is_any is false)
|
|
return ! $is_any;
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcEqualsToAny( $args ) {
|
|
if ( count( $args ) < 2 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'equals_to_any', 2, count( $args ) ]
|
|
);
|
|
}
|
|
|
|
$s = array_shift( $args );
|
|
|
|
return new AFPData( AFPData::DBOOL, self::equalsToAny( $s, $args ) );
|
|
}
|
|
|
|
/**
|
|
* Check if the given string is equals to any of the following strings
|
|
*
|
|
* @param AFPData $string
|
|
* @param AFPData[] $values
|
|
*
|
|
* @return bool
|
|
*/
|
|
protected static function equalsToAny( $string, $values ) {
|
|
$string = $string->toString();
|
|
|
|
if ( $string === '' ) {
|
|
return false;
|
|
}
|
|
|
|
foreach ( $values as $needle ) {
|
|
$needle = $needle->toString();
|
|
|
|
if ( $string === $needle ) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @param string $s
|
|
* @return mixed
|
|
*/
|
|
protected static function ccnorm( $s ) {
|
|
// Instantiate a single version of the equivset so the data is not loaded
|
|
// more than once.
|
|
if ( !self::$equivset ) {
|
|
self::$equivset = new Equivset();
|
|
}
|
|
|
|
return self::$equivset->normalize( $s );
|
|
}
|
|
|
|
/**
|
|
* @param string $s
|
|
* @return array|string
|
|
*/
|
|
protected function rmspecials( $s ) {
|
|
return preg_replace( '/[^\p{L}\p{N}]/u', '', $s );
|
|
}
|
|
|
|
/**
|
|
* @param string $s
|
|
* @return array|string
|
|
*/
|
|
protected function rmdoubles( $s ) {
|
|
return preg_replace( '/(.)\1+/us', '\1', $s );
|
|
}
|
|
|
|
/**
|
|
* @param string $s
|
|
* @return array|string
|
|
*/
|
|
protected function rmwhitespace( $s ) {
|
|
return preg_replace( '/\s+/u', '', $s );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcRMSpecials( $args ) {
|
|
if ( count( $args ) < 1 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'rmspecials', 1, count( $args ) ]
|
|
);
|
|
}
|
|
$s = $args[0]->toString();
|
|
|
|
$s = $this->rmspecials( $s );
|
|
|
|
return new AFPData( AFPData::DSTRING, $s );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcRMWhitespace( $args ) {
|
|
if ( count( $args ) < 1 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'rmwhitespace', 1, count( $args ) ]
|
|
);
|
|
}
|
|
$s = $args[0]->toString();
|
|
|
|
$s = $this->rmwhitespace( $s );
|
|
|
|
return new AFPData( AFPData::DSTRING, $s );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcRMDoubles( $args ) {
|
|
if ( count( $args ) < 1 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'rmdoubles', 1, count( $args ) ]
|
|
);
|
|
}
|
|
$s = $args[0]->toString();
|
|
|
|
$s = $this->rmdoubles( $s );
|
|
|
|
return new AFPData( AFPData::DSTRING, $s );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcNorm( $args ) {
|
|
if ( count( $args ) < 1 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'norm', 1, count( $args ) ]
|
|
);
|
|
}
|
|
$s = $args[0]->toString();
|
|
|
|
$s = $this->ccnorm( $s );
|
|
$s = $this->rmdoubles( $s );
|
|
$s = $this->rmspecials( $s );
|
|
$s = $this->rmwhitespace( $s );
|
|
|
|
return new AFPData( AFPData::DSTRING, $s );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcSubstr( $args ) {
|
|
if ( count( $args ) < 2 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'substr', 2, count( $args ) ]
|
|
);
|
|
}
|
|
|
|
$s = $args[0]->toString();
|
|
$offset = $args[1]->toInt();
|
|
|
|
if ( isset( $args[2] ) ) {
|
|
$length = $args[2]->toInt();
|
|
|
|
$result = mb_substr( $s, $offset, $length );
|
|
} else {
|
|
$result = mb_substr( $s, $offset );
|
|
}
|
|
|
|
return new AFPData( AFPData::DSTRING, $result );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcStrPos( $args ) {
|
|
if ( count( $args ) < 2 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'strpos', 2, count( $args ) ]
|
|
);
|
|
}
|
|
|
|
$haystack = $args[0]->toString();
|
|
$needle = $args[1]->toString();
|
|
|
|
// T62203: Keep empty parameters from causing PHP warnings
|
|
if ( $needle === '' ) {
|
|
return new AFPData( AFPData::DINT, -1 );
|
|
}
|
|
|
|
if ( isset( $args[2] ) ) {
|
|
$offset = $args[2]->toInt();
|
|
|
|
$result = mb_strpos( $haystack, $needle, $offset );
|
|
} else {
|
|
$result = mb_strpos( $haystack, $needle );
|
|
}
|
|
|
|
if ( $result === false ) {
|
|
$result = -1;
|
|
}
|
|
|
|
return new AFPData( AFPData::DINT, $result );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcStrReplace( $args ) {
|
|
if ( count( $args ) < 3 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'str_replace', 3, count( $args ) ]
|
|
);
|
|
}
|
|
|
|
$subject = $args[0]->toString();
|
|
$search = $args[1]->toString();
|
|
$replace = $args[2]->toString();
|
|
|
|
return new AFPData( AFPData::DSTRING, str_replace( $search, $replace, $subject ) );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcStrRegexEscape( $args ) {
|
|
if ( count( $args ) < 1 ) {
|
|
throw new AFPUserVisibleException( 'notenoughargs', $this->mCur->pos,
|
|
[ 'rescape', 1, count( $args ) ] );
|
|
}
|
|
|
|
$string = $args[0]->toString();
|
|
|
|
// preg_quote does not need the second parameter, since rlike takes
|
|
// care of the delimiter symbol itself
|
|
return new AFPData( AFPData::DSTRING, preg_quote( $string ) );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return mixed
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function funcSetVar( $args ) {
|
|
if ( count( $args ) < 2 ) {
|
|
throw new AFPUserVisibleException(
|
|
'notenoughargs',
|
|
$this->mCur->pos,
|
|
[ 'set_var', 2, count( $args ) ]
|
|
);
|
|
}
|
|
|
|
$varName = $args[0]->toString();
|
|
$value = $args[1];
|
|
|
|
$this->setUserVariable( $varName, $value );
|
|
|
|
return $value;
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function castString( $args ) {
|
|
if ( count( $args ) < 1 ) {
|
|
throw new AFPUserVisibleException( 'noparams', $this->mCur->pos, [ __METHOD__ ] );
|
|
}
|
|
$val = $args[0];
|
|
|
|
return AFPData::castTypes( $val, AFPData::DSTRING );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function castInt( $args ) {
|
|
if ( count( $args ) < 1 ) {
|
|
throw new AFPUserVisibleException( 'noparams', $this->mCur->pos, [ __METHOD__ ] );
|
|
}
|
|
$val = $args[0];
|
|
|
|
return AFPData::castTypes( $val, AFPData::DINT );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function castFloat( $args ) {
|
|
if ( count( $args ) < 1 ) {
|
|
throw new AFPUserVisibleException( 'noparams', $this->mCur->pos, [ __METHOD__ ] );
|
|
}
|
|
$val = $args[0];
|
|
|
|
return AFPData::castTypes( $val, AFPData::DFLOAT );
|
|
}
|
|
|
|
/**
|
|
* @param array $args
|
|
* @return AFPData
|
|
* @throws AFPUserVisibleException
|
|
*/
|
|
protected function castBool( $args ) {
|
|
if ( count( $args ) < 1 ) {
|
|
throw new AFPUserVisibleException( 'noparams', $this->mCur->pos, [ __METHOD__ ] );
|
|
}
|
|
$val = $args[0];
|
|
|
|
return AFPData::castTypes( $val, AFPData::DBOOL );
|
|
}
|
|
}
|