net: Add fuzzer for HostResolverImpl.

net/socket/fuzzed_socket_factory.cc

 // 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/socket/fuzzed_socket_factory.h"
 
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "net/base/address_list.h"
 #include "net/base/ip_endpoint.h"
 #include "net/base/net_errors.h"
 #include "net/base/network_change_notifier.h"
 #include "net/log/net_log.h"
 #include "net/socket/client_socket_handle.h"
 #include "net/socket/connection_attempts.h"
 #include "net/socket/fuzzed_socket.h"
 #include "net/socket/ssl_client_socket.h"
 #include "net/ssl/ssl_failure_state.h"
-#include "net/udp/datagram_client_socket.h"
+#include "net/udp/fuzzed_datagram_client_socket.h"
 
 namespace net {
 
 namespace {
 
-// Datagram ClientSocket implementation that always failed to connect.
-class FailingUDPClientSocket : public DatagramClientSocket {
- public:
-  FailingUDPClientSocket() {}
-  ~FailingUDPClientSocket() override {}
-
-  // DatagramClientSocket implementation:
-  int Connect(const IPEndPoint& address) override { return ERR_FAILED; }
-
-  int ConnectUsingNetwork(NetworkChangeNotifier::NetworkHandle network,
-                          const IPEndPoint& address) override {
-    return ERR_FAILED;
-  }
-
-  int ConnectUsingDefaultNetwork(const IPEndPoint& address) override {
-    return ERR_FAILED;
-  }
-
-  NetworkChangeNotifier::NetworkHandle GetBoundNetwork() const override {
-    return -1;
-  }
-
-  // DatagramSocket implementation:
-  void Close() override {}
-
-  int GetPeerAddress(IPEndPoint* address) const override {
-    return ERR_SOCKET_NOT_CONNECTED;
-  }
-
-  int GetLocalAddress(IPEndPoint* address) const override {
-    return ERR_SOCKET_NOT_CONNECTED;
-  }
-
-  const BoundNetLog& NetLog() const override { return net_log_; }
-
-  // Socket implementation:
-  int Read(IOBuffer* buf,
-           int buf_len,
-           const CompletionCallback& callback) override {
-    NOTREACHED();
-    return ERR_UNEXPECTED;
-  }
-
-  int Write(IOBuffer* buf,
-            int buf_len,
-            const CompletionCallback& callback) override {
-    NOTREACHED();
-    return ERR_UNEXPECTED;
-  }
-
-  int SetReceiveBufferSize(int32_t size) override {
-    NOTREACHED();
-    return ERR_UNEXPECTED;
-  }
-
-  int SetSendBufferSize(int32_t size) override {
-    NOTREACHED();
-    return ERR_UNEXPECTED;
-  }
-
-  BoundNetLog net_log_;
-
-  DISALLOW_COPY_AND_ASSIGN(FailingUDPClientSocket);
-};
-
 // SSLClientSocket implementation that always fails to connect.
 class FailingSSLClientSocket : public SSLClientSocket {
  public:
   FailingSSLClientSocket() {}
   ~FailingSSLClientSocket() override {}
 
   // Socket implementation:
   int Read(IOBuffer* buf,
            int buf_len,
            const CompletionCallback& callback) override {
@@ skipping 101 matching lines @@
     : data_provider_(data_provider) {}
 
 FuzzedSocketFactory::~FuzzedSocketFactory() {}
 
 std::unique_ptr<DatagramClientSocket>
 FuzzedSocketFactory::CreateDatagramClientSocket(
     DatagramSocket::BindType bind_type,
     const RandIntCallback& rand_int_cb,
     NetLog* net_log,
     const NetLog::Source& source) {
-  return base::WrapUnique(new FailingUDPClientSocket());
+  return base::WrapUnique(new FuzzedDatagramClientSocket(data_provider_));
 }
 
 std::unique_ptr<StreamSocket> FuzzedSocketFactory::CreateTransportClientSocket(
     const AddressList& addresses,
     std::unique_ptr<SocketPerformanceWatcher> socket_performance_watcher,
     NetLog* net_log,
     const NetLog::Source& source) {
   std::unique_ptr<FuzzedSocket> socket(
       new FuzzedSocket(data_provider_, net_log));
   socket->set_fuzz_connect_result(true);
   // Just use the first address.
   socket->set_remote_address(*addresses.begin());
   return std::move(socket);
 }
 
 std::unique_ptr<SSLClientSocket> FuzzedSocketFactory::CreateSSLClientSocket(
     std::unique_ptr<ClientSocketHandle> transport_socket,
     const HostPortPair& host_and_port,
     const SSLConfig& ssl_config,
     const SSLClientSocketContext& context) {
   return base::WrapUnique(new FailingSSLClientSocket());
 }
 
 void FuzzedSocketFactory::ClearSSLSessionCache() {}
 
 }  // namespace net