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// Copyright 2016 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 "net/http/http_proxy_client_socket.h"
#include <stddef.h>
#include <stdint.h>
#include <fuzzer/FuzzedDataProvider.h>
#include <memory>
#include <string>
#include "base/check_op.h"
#include "base/strings/utf_string_conversions.h"
#include "net/base/address_list.h"
#include "net/base/auth.h"
#include "net/base/host_port_pair.h"
#include "net/base/network_isolation_key.h"
#include "net/base/test_completion_callback.h"
#include "net/http/http_auth_cache.h"
#include "net/http/http_auth_handler_basic.h"
#include "net/http/http_auth_handler_digest.h"
#include "net/http/http_auth_handler_factory.h"
#include "net/http/http_auth_scheme.h"
#include "net/log/test_net_log.h"
#include "net/socket/fuzzed_socket.h"
#include "net/socket/next_proto.h"
#include "net/traffic_annotation/network_traffic_annotation_test_helper.h"
// Fuzzer for HttpProxyClientSocket only tests establishing a connection when
// using the proxy as a tunnel.
//
// |data| is used to create a FuzzedSocket to fuzz reads and writes, see that
// class for details.
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
// Use a test NetLog, to exercise logging code.
net::RecordingTestNetLog test_net_log;
FuzzedDataProvider data_provider(data, size);
net::TestCompletionCallback callback;
std::unique_ptr<net::FuzzedSocket> fuzzed_socket(
new net::FuzzedSocket(&data_provider, &test_net_log));
CHECK_EQ(net::OK, fuzzed_socket->Connect(callback.callback()));
// Create auth handler supporting basic and digest schemes. Other schemes can
// make system calls, which doesn't seem like a great idea.
net::HttpAuthCache auth_cache(
false /* key_server_entries_by_network_isolation_key */);
net::HttpAuthHandlerRegistryFactory auth_handler_factory;
auth_handler_factory.RegisterSchemeFactory(
net::kBasicAuthScheme, new net::HttpAuthHandlerBasic::Factory());
auth_handler_factory.RegisterSchemeFactory(
net::kDigestAuthScheme, new net::HttpAuthHandlerDigest::Factory());
scoped_refptr<net::HttpAuthController> auth_controller(
base::MakeRefCounted<net::HttpAuthController>(
net::HttpAuth::AUTH_PROXY, GURL("http://proxy:42/"),
net::NetworkIsolationKey(), &auth_cache, &auth_handler_factory,
nullptr));
// Determine if the HttpProxyClientSocket should be told the underlying socket
// is HTTPS.
net::HttpProxyClientSocket socket(
std::move(fuzzed_socket), "Bond/007", net::HostPortPair("foo", 80),
net::ProxyServer(net::ProxyServer::SCHEME_HTTP,
net::HostPortPair("proxy", 42)),
auth_controller.get(), true /* tunnel */, false /* using_spdy */,
net::kProtoUnknown, nullptr /* proxy_delegate */,
TRAFFIC_ANNOTATION_FOR_TESTS);
int result = socket.Connect(callback.callback());
result = callback.GetResult(result);
// Repeatedly try to log in with the same credentials.
while (result == net::ERR_PROXY_AUTH_REQUESTED) {
if (!auth_controller->HaveAuth()) {
auth_controller->ResetAuth(net::AuthCredentials(
base::ASCIIToUTF16("user"), base::ASCIIToUTF16("pass")));
}
result = socket.RestartWithAuth(callback.callback());
result = callback.GetResult(result);
}
return 0;
}
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