Move webrtc/{base => rtc_base}

webrtc/base/natserver.cc

Index: webrtc/base/natserver.cc
diff --git a/webrtc/base/natserver.cc b/webrtc/base/natserver.cc
deleted file mode 100644
index e00bf9f7e53404d882e0a9ebc17410c5cad8475f..0000000000000000000000000000000000000000
--- a/webrtc/base/natserver.cc
+++ /dev/null
@@ -1,252 +0,0 @@
-/*
- *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#include <memory>
-
-#include "webrtc/base/checks.h"
-#include "webrtc/base/natsocketfactory.h"
-#include "webrtc/base/natserver.h"
-#include "webrtc/base/logging.h"
-#include "webrtc/base/socketadapters.h"
-
-namespace rtc {
-
-RouteCmp::RouteCmp(NAT* nat) : symmetric(nat->IsSymmetric()) {
-}
-
-size_t RouteCmp::operator()(const SocketAddressPair& r) const {
-  size_t h = r.source().Hash();
-  if (symmetric)
-    h ^= r.destination().Hash();
-  return h;
-}
-
-bool RouteCmp::operator()(
-      const SocketAddressPair& r1, const SocketAddressPair& r2) const {
-  if (r1.source() < r2.source())
-    return true;
-  if (r2.source() < r1.source())
-    return false;
-  if (symmetric && (r1.destination() < r2.destination()))
-    return true;
-  if (symmetric && (r2.destination() < r1.destination()))
-    return false;
-  return false;
-}
-
-AddrCmp::AddrCmp(NAT* nat)
-    : use_ip(nat->FiltersIP()), use_port(nat->FiltersPort()) {
-}
-
-size_t AddrCmp::operator()(const SocketAddress& a) const {
-  size_t h = 0;
-  if (use_ip)
-    h ^= HashIP(a.ipaddr());
-  if (use_port)
-    h ^= a.port() | (a.port() << 16);
-  return h;
-}
-
-bool AddrCmp::operator()(
-      const SocketAddress& a1, const SocketAddress& a2) const {
-  if (use_ip && (a1.ipaddr() < a2.ipaddr()))
-    return true;
-  if (use_ip && (a2.ipaddr() < a1.ipaddr()))
-    return false;
-  if (use_port && (a1.port() < a2.port()))
-    return true;
-  if (use_port && (a2.port() < a1.port()))
-    return false;
-  return false;
-}
-
-// Proxy socket that will capture the external destination address intended for
-// a TCP connection to the NAT server.
-class NATProxyServerSocket : public AsyncProxyServerSocket {
- public:
-  NATProxyServerSocket(AsyncSocket* socket)
-      : AsyncProxyServerSocket(socket, kNATEncodedIPv6AddressSize) {
-    BufferInput(true);
-  }
-
-  void SendConnectResult(int err, const SocketAddress& addr) override {
-    char code = err ? 1 : 0;
-    BufferedReadAdapter::DirectSend(&code, sizeof(char));
-  }
-
- protected:
-  void ProcessInput(char* data, size_t* len) override {
-    if (*len < 2) {
-      return;
-    }
-
-    int family = data[1];
-    RTC_DCHECK(family == AF_INET || family == AF_INET6);
-    if ((family == AF_INET && *len < kNATEncodedIPv4AddressSize) ||
-        (family == AF_INET6 && *len < kNATEncodedIPv6AddressSize)) {
-      return;
-    }
-
-    SocketAddress dest_addr;
-    size_t address_length = UnpackAddressFromNAT(data, *len, &dest_addr);
-
-    *len -= address_length;
-    if (*len > 0) {
-      memmove(data, data + address_length, *len);
-    }
-
-    bool remainder = (*len > 0);
-    BufferInput(false);
-    SignalConnectRequest(this, dest_addr);
-    if (remainder) {
-      SignalReadEvent(this);
-    }
-  }
-
-};
-
-class NATProxyServer : public ProxyServer {
- public:
-  NATProxyServer(SocketFactory* int_factory, const SocketAddress& int_addr,
-                 SocketFactory* ext_factory, const SocketAddress& ext_ip)
-      : ProxyServer(int_factory, int_addr, ext_factory, ext_ip) {
-  }
-
- protected:
-  AsyncProxyServerSocket* WrapSocket(AsyncSocket* socket) override {
-    return new NATProxyServerSocket(socket);
-  }
-};
-
-NATServer::NATServer(
-    NATType type, SocketFactory* internal,
-    const SocketAddress& internal_udp_addr,
-    const SocketAddress& internal_tcp_addr,
-    SocketFactory* external, const SocketAddress& external_ip)
-    : external_(external), external_ip_(external_ip.ipaddr(), 0) {
-  nat_ = NAT::Create(type);
-
-  udp_server_socket_ = AsyncUDPSocket::Create(internal, internal_udp_addr);
-  udp_server_socket_->SignalReadPacket.connect(this,
-                                               &NATServer::OnInternalUDPPacket);
-  tcp_proxy_server_ = new NATProxyServer(internal, internal_tcp_addr, external,
-                                         external_ip);
-
-  int_map_ = new InternalMap(RouteCmp(nat_));
-  ext_map_ = new ExternalMap();
-}
-
-NATServer::~NATServer() {
-  for (InternalMap::iterator iter = int_map_->begin();
-       iter != int_map_->end();
-       iter++)
-    delete iter->second;
-
-  delete nat_;
-  delete udp_server_socket_;
-  delete tcp_proxy_server_;
-  delete int_map_;
-  delete ext_map_;
-}
-
-void NATServer::OnInternalUDPPacket(
-    AsyncPacketSocket* socket, const char* buf, size_t size,
-    const SocketAddress& addr, const PacketTime& packet_time) {
-  // Read the intended destination from the wire.
-  SocketAddress dest_addr;
-  size_t length = UnpackAddressFromNAT(buf, size, &dest_addr);
-
-  // Find the translation for these addresses (allocating one if necessary).
-  SocketAddressPair route(addr, dest_addr);
-  InternalMap::iterator iter = int_map_->find(route);
-  if (iter == int_map_->end()) {
-    Translate(route);
-    iter = int_map_->find(route);
-  }
-  RTC_DCHECK(iter != int_map_->end());
-
-  // Allow the destination to send packets back to the source.
-  iter->second->WhitelistInsert(dest_addr);
-
-  // Send the packet to its intended destination.
-  rtc::PacketOptions options;
-  iter->second->socket->SendTo(buf + length, size - length, dest_addr, options);
-}
-
-void NATServer::OnExternalUDPPacket(
-    AsyncPacketSocket* socket, const char* buf, size_t size,
-    const SocketAddress& remote_addr, const PacketTime& packet_time) {
-  SocketAddress local_addr = socket->GetLocalAddress();
-
-  // Find the translation for this addresses.
-  ExternalMap::iterator iter = ext_map_->find(local_addr);
-  RTC_DCHECK(iter != ext_map_->end());
-
-  // Allow the NAT to reject this packet.
-  if (ShouldFilterOut(iter->second, remote_addr)) {
-    LOG(LS_INFO) << "Packet from " << remote_addr.ToSensitiveString()
-                 << " was filtered out by the NAT.";
-    return;
-  }
-
-  // Forward this packet to the internal address.
-  // First prepend the address in a quasi-STUN format.
-  std::unique_ptr<char[]> real_buf(new char[size + kNATEncodedIPv6AddressSize]);
-  size_t addrlength = PackAddressForNAT(real_buf.get(),
-                                        size + kNATEncodedIPv6AddressSize,
-                                        remote_addr);
-  // Copy the data part after the address.
-  rtc::PacketOptions options;
-  memcpy(real_buf.get() + addrlength, buf, size);
-  udp_server_socket_->SendTo(real_buf.get(), size + addrlength,
-                             iter->second->route.source(), options);
-}
-
-void NATServer::Translate(const SocketAddressPair& route) {
-  AsyncUDPSocket* socket = AsyncUDPSocket::Create(external_, external_ip_);
-
-  if (!socket) {
-    LOG(LS_ERROR) << "Couldn't find a free port!";
-    return;
-  }
-
-  TransEntry* entry = new TransEntry(route, socket, nat_);
-  (*int_map_)[route] = entry;
-  (*ext_map_)[socket->GetLocalAddress()] = entry;
-  socket->SignalReadPacket.connect(this, &NATServer::OnExternalUDPPacket);
-}
-
-bool NATServer::ShouldFilterOut(TransEntry* entry,
-                                const SocketAddress& ext_addr) {
-  return entry->WhitelistContains(ext_addr);
-}
-
-NATServer::TransEntry::TransEntry(
-    const SocketAddressPair& r, AsyncUDPSocket* s, NAT* nat)
-    : route(r), socket(s) {
-  whitelist = new AddressSet(AddrCmp(nat));
-}
-
-NATServer::TransEntry::~TransEntry() {
-  delete whitelist;
-  delete socket;
-}
-
-void NATServer::TransEntry::WhitelistInsert(const SocketAddress& addr) {
-  CritScope cs(&crit_);
-  whitelist->insert(addr);
-}
-
-bool NATServer::TransEntry::WhitelistContains(const SocketAddress& ext_addr) {
-  CritScope cs(&crit_);
-  return whitelist->find(ext_addr) == whitelist->end();
-}
-
-}  // namespace rtc