net/http/http_auth_handler_digest_fuzzer.cc

// Copyright 2019 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 <fuzzer/FuzzedDataProvider.h>

#include <memory>
#include <string>

#include "net/base/network_isolation_key.h"
#include "net/dns/mock_host_resolver.h"
#include "net/http/http_auth_challenge_tokenizer.h"
#include "net/http/http_auth_handler.h"
#include "net/http/http_auth_handler_digest.h"
#include "net/log/net_log_with_source.h"
#include "net/ssl/ssl_info.h"
#include "url/gurl.h"

extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
  FuzzedDataProvider data_provider{data, size};

  std::string challenge =
      "Digest " + data_provider.ConsumeRandomLengthString(500);

  // Dummies
  net::SSLInfo null_ssl_info;
  GURL origin("https://foo.test/");
  auto host_resolver = std::make_unique<net::MockHostResolver>();
  std::unique_ptr<net::HttpAuthHandler> handler;

  net::HttpAuthHandlerDigest::Factory factory;
  factory.CreateAuthHandlerFromString(challenge, net::HttpAuth::AUTH_SERVER,
                                      null_ssl_info, net::NetworkIsolationKey(),
                                      origin, net::NetLogWithSource(),
                                      host_resolver.get(), &handler);

  if (handler) {
    auto followup = "Digest " + data_provider.ConsumeRemainingBytesAsString();
    net::HttpAuthChallengeTokenizer tokenizer{followup.begin(), followup.end()};
    handler->HandleAnotherChallenge(&tokenizer);
  }
  return 0;
}