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39 lines
1.4 KiB
C++
39 lines
1.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <ctype.h>
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#include "nsAString.h"
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#include "plstr.h"
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#include "nsTStringComparator.cpp"
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int nsCaseInsensitiveCStringComparator(const char* aLhs, const char* aRhs,
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size_t aLhsLength, size_t aRhsLength) {
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#if defined(LIBFUZZER) && defined(LINUX)
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// Make sure libFuzzer can see this string compare by calling the POSIX
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// native function which is intercepted. We also call this if the lengths
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// don't match so libFuzzer can at least see a partial string, but we throw
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// away the result afterwards again.
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int32_t result =
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int32_t(strncasecmp(aLhs, aRhs, std::min(aLhsLength, aRhsLength)));
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if (aLhsLength != aRhsLength) {
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return (aLhsLength > aRhsLength) ? 1 : -1;
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}
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#else
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if (aLhsLength != aRhsLength) {
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return (aLhsLength > aRhsLength) ? 1 : -1;
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}
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int32_t result = int32_t(PL_strncasecmp(aLhs, aRhs, aLhsLength));
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#endif
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// Egads. PL_strncasecmp is returning *very* negative numbers.
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// Some folks expect -1,0,1, so let's temper its enthusiasm.
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if (result < 0) {
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result = -1;
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}
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return result;
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}
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