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Blacklist control characters rather than whitelist

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Andrew Schwartzmeyer committed 2016-07-08 16:17:32 -07:00
1 parent 85aa47b489
commit 7ae448f0b1
1 file changed
+4 -6
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src/Microsoft.PowerShell.ConsoleHost/host/msh/ConsoleHostUserInterface.cs
+4 -6
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@@ -399,10 +399,9 @@ namespace Microsoft.PowerShell
}
}
#if LINUX
else if (!(Char.IsLetterOrDigit(k) || Char.IsPunctuation(k) || Char.IsSymbol(k) || Char.IsWhiteSpace(k)))
else if (Char.IsControl(k))
{
// Whitelist valid input characters: letters, digits, punctuation, symbols whitespace
// This is to avoid edge cases like Pause, Print Screen, function keys, and Oem keys, etc.
// blacklist control characters
continue;
}
#endif
@@ -1941,10 +1940,9 @@ namespace Microsoft.PowerShell
}
char k = keyInfo.KeyChar;
if (!(Char.IsLetterOrDigit(k) || Char.IsPunctuation(k) || Char.IsSymbol(k) || Char.IsWhiteSpace(k)))
else if (Char.IsControl(k))
{
// Whitelist valid input characters: letters, digits, punctuation, symbols whitespace
// This is to avoid edge cases like Pause, Print Screen, function keys, and Oem keys, etc.
// blacklist control characters
continue;
}