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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stddef.h>
#include <stdint.h>
#include <fuzzer/FuzzedDataProvider.h>
#include <string>
#include <vector>
#include "base/containers/span.h"
#include "net/ntlm/ntlm_client.h"
#include "net/ntlm/ntlm_test_data.h"
std::u16string ConsumeRandomLengthString16(FuzzedDataProvider& data_provider,
size_t max_chars) {
std::string bytes = data_provider.ConsumeRandomLengthString(max_chars * 2);
return std::u16string(reinterpret_cast<const char16_t*>(bytes.data()),
bytes.size() / 2);
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
FuzzedDataProvider fdp(data, size);
bool is_v2 = fdp.ConsumeBool();
uint64_t client_time = fdp.ConsumeIntegral<uint64_t>();
net::ntlm::NtlmClient client((net::ntlm::NtlmFeatures(is_v2)));
// Generate the input strings and challenge message. The strings will have a
// maximum length 1 character longer than the maximum that |NtlmClient| will
// accept to allow exploring the error cases.
std::u16string domain =
ConsumeRandomLengthString16(fdp, net::ntlm::kMaxFqdnLen + 1);
std::u16string username =
ConsumeRandomLengthString16(fdp, net::ntlm::kMaxUsernameLen + 1);
std::u16string password =
ConsumeRandomLengthString16(fdp, net::ntlm::kMaxPasswordLen + 1);
std::string hostname =
fdp.ConsumeRandomLengthString(net::ntlm::kMaxFqdnLen + 1);
std::string channel_bindings = fdp.ConsumeRandomLengthString(150);
std::string spn =
fdp.ConsumeRandomLengthString(net::ntlm::kMaxFqdnLen + 5 + 1);
std::vector<uint8_t> challenge_msg_bytes =
fdp.ConsumeRemainingBytes<uint8_t>();
client.GenerateAuthenticateMessage(
domain, username, password, hostname, channel_bindings, spn, client_time,
net::ntlm::test::kClientChallenge, base::make_span(challenge_msg_bytes));
return 0;
}
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