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Use IDNA constants only if defined (#171)

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Fixes #168.

Solution based on https://git.ispconfig.org/ispconfig/ispconfig3/commit/0e3cf6f51b4fd.
This commit is contained in:
Mateusz Turcza 2018-03-05 01:16:11 +01:00 committed by Edward Z. Yang
parent 3cb77da11d
commit 89b3fe431e
1 changed files with 5 additions and 1 deletions
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6
library/HTMLPurifier/AttrDef/URI/Host.php
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@ -97,7 +97,11 @@ class HTMLPurifier_AttrDef_URI_Host extends HTMLPurifier_AttrDef
// PHP 5.3 and later support this functionality natively
if (function_exists('idn_to_ascii')) {
$string = idn_to_ascii($string, IDNA_NONTRANSITIONAL_TO_ASCII, INTL_IDNA_VARIANT_UTS46);
if (defined('IDNA_NONTRANSITIONAL_TO_ASCII') && defined('INTL_IDNA_VARIANT_UTS46')) {
$string = idn_to_ascii($string, IDNA_NONTRANSITIONAL_TO_ASCII, INTL_IDNA_VARIANT_UTS46);
} else {
$string = idn_to_ascii($string);
}
// If we have Net_IDNA2 support, we can support IRIs by
// punycoding them. (This is the most portable thing to do,