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Commitc18c93b

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bug#21279#20411 fix Yaml parsing for very long quoted strings (RichardBradley)
This PR was merged into the 2.7 branch.Discussion----------#20411 fix Yaml parsing for very long quoted strings| Q | A| ------------- | ---| Branch? | 2.7| Bug fix? | yes| New feature? | no| BC breaks? | no| Deprecations? | no| Tests pass? | yes| Fixed tickets |#20411| License | MIT| Doc PR | noThisfixes#20411, a YAML string with too many backslash escapes can trigger a `PREG_BACKTRACK_LIMIT_ERROR` error in the Yaml parser.There should be no behavioural change other than the bug fixI have included a test which fails before this fix and passes after this fix.Commits-------51bca66#20411 fix Yaml parsing for very long quoted strings
2 parentsaebb659 +51bca66 commitc18c93b

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‎src/Symfony/Component/Yaml/Inline.php‎

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@@ -21,7 +21,7 @@
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*/
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class Inline
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{
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constREGEX_QUOTED_STRING ='(?:"([^"\\\\]*(?:\\\\.[^"\\\\]*)*)"|\'([^\']*(?:\'\'[^\']*)*)\')';
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constREGEX_QUOTED_STRING ='(?:"([^"\\\\]*+(?:\\\\.[^"\\\\]*+)*+)"|\'([^\']*+(?:\'\'[^\']*+)*+)\')';
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privatestatic$exceptionOnInvalidType =false;
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privatestatic$objectSupport =false;

‎src/Symfony/Component/Yaml/Tests/InlineTest.php‎

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@@ -410,4 +410,14 @@ public function testNotSupportedMissingValue()
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{
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Inline::parse('{this, is not, supported}');
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}
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publicfunctiontestVeryLongQuotedStrings()
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{
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$longStringWithQuotes =str_repeat("x\r\n\\\"x\"x",1000);
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$yamlString = Inline::dump(array('longStringWithQuotes' =>$longStringWithQuotes));
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$arrayFromYaml = Inline::parse($yamlString);
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$this->assertEquals($longStringWithQuotes,$arrayFromYaml['longStringWithQuotes']);
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}
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}

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