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@@ -760,6 +760,13 @@ class Helpers {
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if(!isset($res['preferredUsername']) && !isset($res['nickname'])) {
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return;
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}
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+ // skip invalid usernames
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+ if(!ctype_alnum($res['preferredUsername'])) {
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+ $tmpUsername = str_replace(['_', '.', '-'], '', $res['preferredUsername']);
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+ if(!ctype_alnum($tmpUsername)) {
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+ return;
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+ }
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+ }
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$username = (string) Purify::clean($res['preferredUsername'] ?? $res['nickname']);
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if(empty($username)) {
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return;
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