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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/at_exit.h"
#include "base/check_op.h"
#include "base/i18n/icu_util.h"
#include "base/no_destructor.h"
#include "url/gurl.h"
struct TestCase {
TestCase() { CHECK(base::i18n::InitializeICU()); }
// used by ICU integration.
base::AtExitManager at_exit_manager;
};
TestCase* test_case = new TestCase();
// Checks that GURL's canonicalization is idempotent. This can help discover
// issues like https://crbug.com/1128999.
void CheckIdempotency(const GURL& url) {
if (!url.is_valid())
return;
const std::string& spec = url.spec();
GURL recanonicalized(spec);
CHECK(recanonicalized.is_valid());
CHECK_EQ(spec, recanonicalized.spec());
}
// Checks that |url.spec()| is preserved across a call to ReplaceComponents with
// zero replacements, which is effectively a copy. This can help discover issues
// like https://crbug.com/1075515.
void CheckReplaceComponentsPreservesSpec(const GURL& url) {
static const base::NoDestructor<GURL::Replacements> no_op;
GURL copy = url.ReplaceComponents(*no_op);
CHECK_EQ(url.is_valid(), copy.is_valid());
if (url.is_valid()) {
CHECK_EQ(url.spec(), copy.spec());
}
}
// Entry point for LibFuzzer.
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
if (size < 1)
return 0;
{
std::string_view string_piece_input(reinterpret_cast<const char*>(data),
size);
const GURL url_from_string_piece(string_piece_input);
CheckIdempotency(url_from_string_piece);
CheckReplaceComponentsPreservesSpec(url_from_string_piece);
}
// Test for std::u16string_view if size is even.
if (size % sizeof(char16_t) == 0) {
std::u16string_view string_piece_input16(
reinterpret_cast<const char16_t*>(data), size / sizeof(char16_t));
const GURL url_from_string_piece16(string_piece_input16);
CheckIdempotency(url_from_string_piece16);
CheckReplaceComponentsPreservesSpec(url_from_string_piece16);
}
// Resolve relative url tests.
{
size_t size_t_bytes = sizeof(size_t);
if (size < size_t_bytes + 1) {
return 0;
}
size_t relative_size =
*reinterpret_cast<const size_t*>(data) % (size - size_t_bytes);
std::string relative_string(
reinterpret_cast<const char*>(data + size_t_bytes), relative_size);
std::string_view string_piece_part_input(
reinterpret_cast<const char*>(data + size_t_bytes + relative_size),
size - relative_size - size_t_bytes);
const GURL url_from_string_piece_part(string_piece_part_input);
CheckIdempotency(url_from_string_piece_part);
CheckReplaceComponentsPreservesSpec(url_from_string_piece_part);
url_from_string_piece_part.Resolve(relative_string);
if (relative_size % sizeof(char16_t) == 0) {
std::u16string relative_string16(
reinterpret_cast<const char16_t*>(data + size_t_bytes),
relative_size / sizeof(char16_t));
url_from_string_piece_part.Resolve(relative_string16);
}
}
return 0;
}
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