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- // Copyright 2015 The Chromium Authors. All rights reserved.
- // 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;
- {
- base::StringPiece 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 StringPiece16 if size is even.
- if (size % sizeof(char16_t) == 0) {
- base::StringPiece16 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);
- base::StringPiece 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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