mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/AbuseFilter.git
synced 2024-11-24 22:15:26 +00:00
13cdb86dd2
Reason for revert: T214674#5374806
This reverts commit 56e6117afd.
Bug: T214674
Change-Id: Iccce248d2693cd9877a740b74e72a577e730435e
708 lines
19 KiB
PHP
708 lines
19 KiB
PHP
<?php
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/**
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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*
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* @license GPL-2.0-or-later
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* @author Marius Hoch < hoo@online.de >
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*/
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/**
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* @group Test
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* @group AbuseFilter
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* @group AbuseFilterParser
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*
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* @covers AbuseFilterCachingParser
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* @covers AFPTreeParser
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* @covers AFPTreeNode
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* @covers AFPParserState
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* @covers AbuseFilterParser
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* @covers AbuseFilterTokenizer
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* @covers AFPToken
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* @covers AFPUserVisibleException
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* @covers AFPException
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* @covers AFPData
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* @covers AbuseFilterVariableHolder
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* @covers AFComputedVariable
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*/
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class AbuseFilterParserTest extends AbuseFilterParserTestCase {
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/**
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* @param string $rule The rule to parse
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* @dataProvider readTests
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*/
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public function testParser( $rule ) {
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foreach ( self::getParsers() as $parser ) {
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$this->assertTrue( $parser->parse( $rule ), 'Parser used: ' . get_class( $parser ) );
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}
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}
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/**
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* @return Generator|array
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*/
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public function readTests() {
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$testPath = __DIR__ . "/../parserTests";
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$testFiles = glob( $testPath . "/*.t" );
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foreach ( $testFiles as $testFile ) {
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$testName = basename( substr( $testFile, 0, -2 ) );
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$rule = trim( file_get_contents( $testFile ) );
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yield $testName => [ $rule ];
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}
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}
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/**
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* Test expression evaluation
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*
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* @param string $expr The expression to evaluate
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* @param string $expected The expected result
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* @dataProvider provideExpressions
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*/
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public function testEvaluateExpression( $expr, $expected ) {
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foreach ( self::getParsers() as $parser ) {
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$actual = $parser->evaluateExpression( $expr );
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$this->assertEquals( $expected, $actual );
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}
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}
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/**
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* Data provider for testEvaluateExpression
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*
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* @return array
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*/
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public function provideExpressions() {
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return [
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[ '1 === 1', true ],
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[ 'rescape( "abc* (def)" )', 'abc\* \(def\)' ],
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[ 'str_replace( "foobarbaz", "bar", "-" )', 'foo-baz' ],
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[ 'rmdoubles( "foobybboo" )', 'fobybo' ],
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[ 'lcase("FÁmí")', 'fámí' ],
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[ 'substr( "foobar", 0, 3 )', 'foo' ]
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];
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}
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/**
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* Test empty (or almost empty) syntax and ensure it doesn't match
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*
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* @param string $code
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* @dataProvider provideEmptySyntax
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*/
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public function testEmptySyntax( $code ) {
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foreach ( self::getParsers() as $parser ) {
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$this->assertFalse( $parser->parse( $code ) );
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}
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}
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/**
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* Data provider for testEmptySyntax
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*
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* @return array
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*/
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public function provideEmptySyntax() {
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return [
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[ '' ],
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[ '()' ],
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[ ';;;;' ]
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];
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}
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/**
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* Ensure that AbuseFilterTokenizer::OPERATOR_RE matches the contents
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* and order of AbuseFilterTokenizer::$operators.
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*/
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public function testOperatorRe() {
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$quotedOps = array_map(
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function ( $op ) {
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return preg_quote( $op, '/' );
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},
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AbuseFilterTokenizer::$operators
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);
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$operatorRe = '/(' . implode( '|', $quotedOps ) . ')/A';
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$this->assertEquals( $operatorRe, AbuseFilterTokenizer::OPERATOR_RE );
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}
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/**
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* Ensure that AbuseFilterTokenizer::RADIX_RE matches the contents
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* and order of AbuseFilterTokenizer::$bases.
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*/
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public function testRadixRe() {
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$baseClass = implode( '', array_keys( AbuseFilterTokenizer::$bases ) );
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$radixRe = "/([0-9A-Fa-f]+(?:\.\d*)?|\.\d+)([$baseClass])?(?![a-z])/Au";
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$this->assertEquals( $radixRe, AbuseFilterTokenizer::RADIX_RE );
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}
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/**
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* Ensure the number of conditions counted for given expressions is right.
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*
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* @param string $rule The rule to parse
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* @param int $expected The expected amount of used conditions
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* @dataProvider condCountCases
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*/
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public function testCondCount( $rule, $expected ) {
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foreach ( self::getParsers() as $parser ) {
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$parserClass = get_class( $parser );
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$countBefore = $parser->getCondCount();
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$parser->parse( $rule );
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$countAfter = $parser->getCondCount();
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$actual = $countAfter - $countBefore;
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$this->assertEquals( $expected, $actual, "Wrong condition count for $rule with $parserClass" );
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// Reset cache or it would compromise conditions count
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$parser::$funcCache = [];
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}
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}
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/**
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* Data provider for testCondCount method.
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* @return array
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*/
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public function condCountCases() {
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return [
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[ '((("a" == "b")))', 1 ],
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[ 'contains_any("a", "b", "c")', 1 ],
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[ '"a" == "b" & "b" == "c"', 1 ],
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[ '"a" == "b" | "b" == "c"', 2 ],
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[ '"a" in "b" + "c" in "d" + "e" in "f"', 3 ],
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[ 'true', 0 ],
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[ '"a" == "a" | "c" == "d"', 1 ],
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[ '"a" == "b" & "c" == "d"', 1 ],
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[ '1 = 0 & 2 * 3 * 4 <= 560 & "a" = "b"', 1 ],
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[ '1 = 1 & 2 * 3 * 4 <= 560 & "a" = "b"', 3 ],
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[ '1 = 1 | 2 * 3 * 4 <= 560 | "a" = "b"', 1 ],
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[ '1 = 0 | 2 * 3 * 4 <= 560 | "a" = "b"', 2 ],
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];
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}
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/**
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* Test for T204841
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*/
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public function testArrayShortcircuit() {
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$code = 'a := [false, false]; b := [false, false]; c := 42; d := [0,1];' .
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'a[0] != false & b[1] != false & (b[5**2/(5*(4+1))] !== a[43-c] | a[d[0]] === b[d[c-41]])';
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foreach ( self::getParsers() as $parser ) {
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$this->assertFalse( $parser->parse( $code ), 'Parser: ' . get_class( $parser ) );
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}
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}
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/**
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* Test the 'expectednotfound' exception
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*
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* @param string $expr The expression to test
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* @param string $caller The function where the exception is thrown
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* @dataProvider expectedNotFound
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*/
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public function testExpectedNotFoundException( $expr, $caller ) {
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$this->exceptionTest( 'expectednotfound', $expr, $caller );
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}
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/**
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* Data provider for testExpectedNotFoundException.
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* The second parameter is the function where the exception is raised.
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* One expression for each throw.
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*
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* @return array
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*/
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public function expectedNotFound() {
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return [
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[ 'a:= [1,2,3]; a[1 = 4', 'doLevelSet' ],
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[ "if 1 = 1 'foo'", 'doLevelConditions' ],
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[ "if 1 = 1 then 'foo'", 'doLevelConditions' ],
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[ "if 1 = 1 then 'foo' else 'bar'", 'doLevelConditions' ],
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[ "a := 1 = 1 ? 'foo'", 'doLevelConditions' ],
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[ '(1 = 1', 'doLevelBraces' ],
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[ 'lcase = 3', 'doLevelFunction' ],
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[ 'lcase( 3 = 1', 'doLevelFunction' ],
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[ 'a := [1,2', 'doLevelAtom' ],
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[ '1 = 1 | (', 'skipOverBraces' ],
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[ 'a := [1,2,3]; 3 = a[5', 'doLevelArrayElements' ],
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];
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}
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/**
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* Test the 'unexpectedatend' exception
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*
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* @param string $expr The expression to test
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* @param string $caller The function where the exception is thrown
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* @dataProvider unexpectedAtEnd
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*/
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public function testUnexpectedAtEndException( $expr, $caller ) {
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$this->exceptionTest( 'unexpectedatend', $expr, $caller );
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}
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/**
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* Data provider for testUnexpectedAtEndException
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* The second parameter is the function where the exception is raised.
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* One expression for each throw.
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*
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* @return array
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*/
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public function unexpectedAtEnd() {
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return [
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[ "'a' = 1 )", 'doLevelEntry' ],
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];
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}
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/**
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* Test the 'unrecognisedvar' exception
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*
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* @param string $expr The expression to test
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* @param string $caller The function where the exception is thrown
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* @dataProvider unrecognisedVar
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*/
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public function testUnrecognisedVarException( $expr, $caller ) {
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$this->exceptionTest( 'unrecognisedvar', $expr, $caller );
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}
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/**
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* Data provider for testUnrecognisedVarException
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* The second parameter is the function where the exception is raised.
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* One expression for each throw.
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*
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* @return array
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*/
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public function unrecognisedVar() {
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return [
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[ 'a[1] := 5', 'doLevelSet' ],
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[ 'a = 5', 'getVarValue' ],
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];
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}
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/**
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* Test the 'notarray' exception
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*
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* @param string $expr The expression to test
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* @param string $caller The function where the exception is thrown
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* @dataProvider notArray
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*/
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public function testNotArrayException( $expr, $caller ) {
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$this->exceptionTest( 'notarray', $expr, $caller );
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}
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/**
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* Data provider for testNotArrayException
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* The second parameter is the function where the exception is raised.
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* One expression for each throw.
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*
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* @return array
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*/
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public function notArray() {
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return [
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[ 'a := 5; a[1] = 5', 'doLevelSet' ],
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[ 'a := 1; 3 = a[5]', 'doLevelArrayElements' ],
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[ 'a := 2; a[] := 2', '[different callers]' ],
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[ 'a := 3; a[3] := 5', '[different callers]' ]
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];
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}
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/**
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* Test the 'outofbounds' exception
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*
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* @param string $expr The expression to test
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* @param string $caller The function where the exception is thrown
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* @dataProvider outOfBounds
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*/
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public function testOutOfBoundsException( $expr, $caller ) {
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$this->exceptionTest( 'outofbounds', $expr, $caller );
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}
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/**
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* Data provider for testOutOfBoundsException
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* The second parameter is the function where the exception is raised.
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* One expression for each throw.
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*
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* @return array
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*/
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public function outOfBounds() {
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return [
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[ 'a := [2]; a[5] = 9', 'doLevelSet' ],
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[ 'a := [1,2,3]; 3 = a[5]', 'doLevelArrayElements' ],
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[ 'a := [1]; a[15] := 5', '[different callers]' ]
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];
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}
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/**
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* Test the 'unrecognisedkeyword' exception
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*
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* @param string $expr The expression to test
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* @param string $caller The function where the exception is thrown
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* @dataProvider unrecognisedKeyword
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*/
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public function testUnrecognisedKeywordException( $expr, $caller ) {
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$this->exceptionTest( 'unrecognisedkeyword', $expr, $caller );
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}
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/**
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* Data provider for testUnrecognisedKeywordException
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* The second parameter is the function where the exception is raised.
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* One expression for each throw.
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*
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* @return array
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*/
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public function unrecognisedKeyword() {
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return [
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[ '5 = rlike', 'doLevelAtom' ],
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];
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}
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/**
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* Test the 'unexpectedtoken' exception
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*
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* @param string $expr The expression to test
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* @param string $caller The function where the exception is thrown
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* @dataProvider unexpectedToken
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*/
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public function testUnexpectedTokenException( $expr, $caller ) {
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$this->exceptionTest( 'unexpectedtoken', $expr, $caller );
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}
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/**
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* Data provider for testUnexpectedTokenException
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* The second parameter is the function where the exception is raised.
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* One expression for each throw.
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*
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* @return array
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*/
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public function unexpectedToken() {
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return [
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[ '1 =? 1', 'doLevelAtom' ],
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];
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}
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/**
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* Test the 'disabledvar' exception
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*
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* @param string $expr The expression to test
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* @param string $caller The function where the exception is thrown
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* @dataProvider disabledVar
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*/
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public function testDisabledVarException( $expr, $caller ) {
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$this->exceptionTest( 'disabledvar', $expr, $caller );
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}
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/**
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* Data provider for testDisabledVarException
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* The second parameter is the function where the exception is raised.
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* One expression for each throw.
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*
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* @return array
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*/
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public function disabledVar() {
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return [
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[ 'old_text = 1', 'getVarValue' ],
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];
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}
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/**
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* Test the 'overridebuiltin' exception
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*
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* @param string $expr The expression to test
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* @param string $caller The function where the exception is thrown
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* @dataProvider overrideBuiltin
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*/
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public function testOverrideBuiltinException( $expr, $caller ) {
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$this->exceptionTest( 'overridebuiltin', $expr, $caller );
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}
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/**
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* Data provider for testOverrideBuiltinException
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* The second parameter is the function where the exception is raised.
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* One expression for each throw.
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*
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* @return array
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*/
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public function overrideBuiltin() {
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return [
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[ 'added_lines := 1', 'setUserVariable' ],
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];
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}
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/**
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* Test the 'regexfailure' exception
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*
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* @param string $expr The expression to test
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* @param string $caller The function where the exception is thrown
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* @dataProvider regexFailure
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*/
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public function testRegexFailureException( $expr, $caller ) {
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$this->exceptionTest( 'regexfailure', $expr, $caller );
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}
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/**
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* Data provider for testRegexFailureException
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* The second parameter is the function where the exception is raised.
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* One expression for each throw.
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*
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* @return array
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*/
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public function regexFailure() {
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return [
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[ "rcount('(','a')", 'funcRCount' ],
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[ "get_matches('this (should fail', 'any haystack')", 'funcGetMatches' ],
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];
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}
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/**
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* Test the 'invalidiprange' exception
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*
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* @param string $expr The expression to test
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* @param string $caller The function where the exception is thrown
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* @dataProvider invalidIPRange
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*/
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public function testInvalidIPRangeException( $expr, $caller ) {
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$this->exceptionTest( 'invalidiprange', $expr, $caller );
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}
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/**
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* Data provider for testInvalidIPRangeException
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* The second parameter is the function where the exception is raised.
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* One expression for each throw.
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*
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* @return array
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*/
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public function invalidIPRange() {
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return [
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[ "ip_in_range('0.0.0.0', 'lol')", 'funcIPInRange' ],
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];
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}
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/**
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* Test functions which take exactly one parameters calling them
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* without 0 params. They should throw a 'noparams' exception.
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*
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* @param string $func The function to test
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* @dataProvider oneParamFuncs
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*/
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public function testNoParamsException( $func ) {
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foreach ( self::getParsers() as $parser ) {
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$this->setExpectedException(
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AFPUserVisibleException::class,
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'No parameters given to function'
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);
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$parser->parse( "$func()" );
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}
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}
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/**
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* Data provider for testNoParamsException, returns a list of
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* functions taking a single parameter
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*
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* @return array
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*/
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public function oneParamFuncs() {
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return [
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[ 'lcase' ],
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[ 'ucase' ],
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[ 'length' ],
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[ 'strlen' ],
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[ 'specialratio' ],
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[ 'count' ],
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[ 'rcount' ],
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[ 'ccnorm' ],
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[ 'sanitize' ],
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[ 'rmspecials' ],
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[ 'rmwhitespace' ],
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[ 'rmdoubles' ],
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[ 'norm' ],
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[ 'rescape' ],
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[ 'string' ],
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[ 'int' ],
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[ 'float' ],
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[ 'bool' ],
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];
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}
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|
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/**
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* Test functions taking two parameters by providing only one.
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* They should throw a 'notenoughargs' exception.
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*
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* @param string $func The function to test
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* @dataProvider twoParamsFuncs
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*/
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public function testNotEnoughArgsExceptionTwo( $func ) {
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foreach ( self::getParsers() as $parser ) {
|
|
// Nevermind if the argument can't be string since we check the amount
|
|
// of parameters before anything else.
|
|
$code = "$func('foo')";
|
|
$length = strlen( $code );
|
|
$this->setExpectedException(
|
|
AFPUserVisibleException::class,
|
|
"Not enough arguments to function $func called at character $length.\n" .
|
|
'Expected 2 arguments, got 1'
|
|
);
|
|
$parser->parse( $code );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Data provider for testNotEnoughArgsExceptionTwo, returns the list of
|
|
* functions taking two parameters.
|
|
*
|
|
* @return array
|
|
*/
|
|
public function twoParamsFuncs() {
|
|
return [
|
|
[ 'get_matches' ],
|
|
[ 'ip_in_range' ],
|
|
[ 'contains_any' ],
|
|
[ 'contains_all' ],
|
|
[ 'ccnorm_contains_any' ],
|
|
[ 'ccnorm_contains_all' ],
|
|
[ 'equals_to_any' ],
|
|
[ 'substr' ],
|
|
[ 'strpos' ],
|
|
[ 'set_var' ],
|
|
];
|
|
}
|
|
|
|
/**
|
|
* Test functions taking three parameters by providing only two.
|
|
* They should throw a 'notenoughargs' exception.
|
|
*
|
|
* @param string $func The function to test
|
|
* @dataProvider threeParamsFuncs
|
|
*/
|
|
public function testNotEnoughArgsExceptionThree( $func ) {
|
|
foreach ( self::getParsers() as $parser ) {
|
|
$this->setExpectedException(
|
|
AFPUserVisibleException::class,
|
|
"Not enough arguments to function $func called at character 25.\n" .
|
|
'Expected 3 arguments, got 2'
|
|
);
|
|
// Nevermind if the argument can't be string since we check the amount
|
|
// of parameters before anything else.
|
|
$parser->parse( "$func('foo', 'bar')" );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Data provider for testNotEnoughArgsExceptionThree, returns the list of
|
|
* functions taking three parameters.
|
|
*
|
|
* @return array
|
|
*/
|
|
public function threeParamsFuncs() {
|
|
return [
|
|
[ 'str_replace' ],
|
|
];
|
|
}
|
|
|
|
/**
|
|
* Check that deprecated variables are correctly translated to the new ones with a debug notice
|
|
*
|
|
* @param string $old The old name of the variable
|
|
* @param string $new The new name of the variable
|
|
* @dataProvider provideDeprecatedVars
|
|
*/
|
|
public function testDeprecatedVars( $old, $new ) {
|
|
$loggerMock = new TestLogger();
|
|
$loggerMock->setCollect( true );
|
|
$this->setLogger( 'AbuseFilter', $loggerMock );
|
|
|
|
$vars = new AbuseFilterVariableHolder();
|
|
// Set it under the new name, and check that the old name points to it
|
|
$vars->setVar( $new, 'Some value' );
|
|
|
|
foreach ( self::getParsers() as $parser ) {
|
|
$pname = get_class( $parser );
|
|
$parser->setVariables( $vars );
|
|
$actual = $parser->parse( "$old === $new" );
|
|
|
|
$loggerBuffer = $loggerMock->getBuffer();
|
|
// Check that the use has been logged
|
|
$found = false;
|
|
foreach ( $loggerBuffer as $entry ) {
|
|
$check = preg_match( '/AbuseFilter: deprecated variable/', $entry[1] );
|
|
if ( $check ) {
|
|
$found = true;
|
|
break;
|
|
}
|
|
}
|
|
if ( !$found ) {
|
|
$this->fail( "The use of the deprecated variable $old was not logged. Parser: $pname" );
|
|
}
|
|
|
|
$this->assertTrue( $actual, "Parser: $pname" );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Data provider for testDeprecatedVars
|
|
* @return Generator|array
|
|
*/
|
|
public function provideDeprecatedVars() {
|
|
$deprecated = AbuseFilter::$deprecatedVars;
|
|
foreach ( $deprecated as $old => $new ) {
|
|
yield $old => [ $old, $new ];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Ensure that things like `'a' === 'b' === 'c'` or `1 < 2 < 3` are rejected, while `1 < 2 == 3`
|
|
* and `1 == 2 < 3` are not. (T218906)
|
|
* @param string $code Code to parse
|
|
* @param bool $valid Whether $code is valid (or should throw an exception)
|
|
* @dataProvider provideConsecutiveComparisons
|
|
*/
|
|
public function testDisallowConsecutiveComparisons( $code, $valid ) {
|
|
foreach ( self::getParsers() as $parser ) {
|
|
$pname = get_class( $parser );
|
|
$actuallyValid = true;
|
|
try {
|
|
$parser->parse( $code );
|
|
} catch ( AFPUserVisibleException $e ) {
|
|
$actuallyValid = false;
|
|
}
|
|
|
|
$this->assertSame(
|
|
$valid,
|
|
$actuallyValid,
|
|
'The code should' . ( $valid ? ' ' : ' NOT ' ) . "be parsed correctly. Parser: $pname"
|
|
);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Data provider for testDisallowConsecutiveComparisons
|
|
*
|
|
* @return Generator
|
|
*/
|
|
public function provideConsecutiveComparisons() {
|
|
// Same as AbuseFilterParser::doLevelCompares
|
|
$eqOps = [ '==', '===', '!=', '!==', '=' ];
|
|
$ordOps = [ '<', '>', '<=', '>=' ];
|
|
$ops = array_merge( $eqOps, $ordOps );
|
|
foreach ( $ops as $op1 ) {
|
|
foreach ( $ops as $op2 ) {
|
|
$testStr = "1 $op1 3.14 $op2 -1";
|
|
$valid = ( in_array( $op1, $eqOps ) && in_array( $op2, $ordOps ) ) ||
|
|
( in_array( $op1, $ordOps ) && in_array( $op2, $eqOps ) );
|
|
yield $testStr => [ $testStr, $valid ];
|
|
}
|
|
}
|
|
// Some more cases with more than 2 comparisons
|
|
$extra = [
|
|
'1 === 1 < 3 === 0',
|
|
'1 === 1 < 3 === 0 < 555',
|
|
'1 < 3 === 0 < 555',
|
|
'1 < 3 === 0 < 555 !== 444',
|
|
'1 != 0 < 3 == 1 > 0 != 0'
|
|
];
|
|
foreach ( $extra as $case ) {
|
|
yield $case => [ $case, false ];
|
|
}
|
|
}
|
|
}
|