Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 186 insertions, 0 deletions

diff --git a/third_party/libwebrtc/rtc_base/server_socket_adapters.cc b/third_party/libwebrtc/rtc_base/server_socket_adapters.cc
new file mode 100644
index 0000000000..673083c7cd
--- /dev/null
+++ b/third_party/libwebrtc/rtc_base/server_socket_adapters.cc
@@ -0,0 +1,186 @@
+/*
+ *  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 "rtc_base/server_socket_adapters.h"
+
+#include <string>
+
+#include "rtc_base/byte_buffer.h"
+
+namespace rtc {
+
+AsyncProxyServerSocket::AsyncProxyServerSocket(Socket* socket,
+                                               size_t buffer_size)
+    : BufferedReadAdapter(socket, buffer_size) {}
+
+AsyncProxyServerSocket::~AsyncProxyServerSocket() = default;
+
+AsyncSSLServerSocket::AsyncSSLServerSocket(Socket* socket)
+    : BufferedReadAdapter(socket, 1024) {
+  BufferInput(true);
+}
+
+void AsyncSSLServerSocket::ProcessInput(char* data, size_t* len) {
+  // We only accept client hello messages.
+  const ArrayView<const uint8_t> client_hello =
+      AsyncSSLSocket::SslClientHello();
+  if (*len < client_hello.size()) {
+    return;
+  }
+
+  if (memcmp(client_hello.data(), data, client_hello.size()) != 0) {
+    Close();
+    SignalCloseEvent(this, 0);
+    return;
+  }
+
+  *len -= client_hello.size();
+
+  // Clients should not send more data until the handshake is completed.
+  RTC_DCHECK(*len == 0);
+
+  const ArrayView<const uint8_t> server_hello =
+      AsyncSSLSocket::SslServerHello();
+  // Send a server hello back to the client.
+  DirectSend(server_hello.data(), server_hello.size());
+
+  // Handshake completed for us, redirect input to our parent.
+  BufferInput(false);
+}
+
+AsyncSocksProxyServerSocket::AsyncSocksProxyServerSocket(Socket* socket)
+    : AsyncProxyServerSocket(socket, kBufferSize), state_(SS_HELLO) {
+  BufferInput(true);
+}
+
+void AsyncSocksProxyServerSocket::ProcessInput(char* data, size_t* len) {
+  RTC_DCHECK(state_ < SS_CONNECT_PENDING);
+
+  ByteBufferReader response(data, *len);
+  if (state_ == SS_HELLO) {
+    HandleHello(&response);
+  } else if (state_ == SS_AUTH) {
+    HandleAuth(&response);
+  } else if (state_ == SS_CONNECT) {
+    HandleConnect(&response);
+  }
+
+  // Consume parsed data
+  *len = response.Length();
+  memmove(data, response.Data(), *len);
+}
+
+void AsyncSocksProxyServerSocket::DirectSend(const ByteBufferWriter& buf) {
+  BufferedReadAdapter::DirectSend(buf.Data(), buf.Length());
+}
+
+void AsyncSocksProxyServerSocket::HandleHello(ByteBufferReader* request) {
+  uint8_t ver, num_methods;
+  if (!request->ReadUInt8(&ver) || !request->ReadUInt8(&num_methods)) {
+    Error(0);
+    return;
+  }
+
+  if (ver != 5) {
+    Error(0);
+    return;
+  }
+
+  // Handle either no-auth (0) or user/pass auth (2)
+  uint8_t method = 0xFF;
+  if (num_methods > 0 && !request->ReadUInt8(&method)) {
+    Error(0);
+    return;
+  }
+
+  SendHelloReply(method);
+  if (method == 0) {
+    state_ = SS_CONNECT;
+  } else if (method == 2) {
+    state_ = SS_AUTH;
+  } else {
+    state_ = SS_ERROR;
+  }
+}
+
+void AsyncSocksProxyServerSocket::SendHelloReply(uint8_t method) {
+  ByteBufferWriter response;
+  response.WriteUInt8(5);       // Socks Version
+  response.WriteUInt8(method);  // Auth method
+  DirectSend(response);
+}
+
+void AsyncSocksProxyServerSocket::HandleAuth(ByteBufferReader* request) {
+  uint8_t ver, user_len, pass_len;
+  std::string user, pass;
+  if (!request->ReadUInt8(&ver) || !request->ReadUInt8(&user_len) ||
+      !request->ReadString(&user, user_len) || !request->ReadUInt8(&pass_len) ||
+      !request->ReadString(&pass, pass_len)) {
+    Error(0);
+    return;
+  }
+
+  SendAuthReply(0);
+  state_ = SS_CONNECT;
+}
+
+void AsyncSocksProxyServerSocket::SendAuthReply(uint8_t result) {
+  ByteBufferWriter response;
+  response.WriteUInt8(1);  // Negotiation Version
+  response.WriteUInt8(result);
+  DirectSend(response);
+}
+
+void AsyncSocksProxyServerSocket::HandleConnect(ByteBufferReader* request) {
+  uint8_t ver, command, reserved, addr_type;
+  uint32_t ip;
+  uint16_t port;
+  if (!request->ReadUInt8(&ver) || !request->ReadUInt8(&command) ||
+      !request->ReadUInt8(&reserved) || !request->ReadUInt8(&addr_type) ||
+      !request->ReadUInt32(&ip) || !request->ReadUInt16(&port)) {
+    Error(0);
+    return;
+  }
+
+  if (ver != 5 || command != 1 || reserved != 0 || addr_type != 1) {
+    Error(0);
+    return;
+  }
+
+  SignalConnectRequest(this, SocketAddress(ip, port));
+  state_ = SS_CONNECT_PENDING;
+}
+
+void AsyncSocksProxyServerSocket::SendConnectResult(int result,
+                                                    const SocketAddress& addr) {
+  if (state_ != SS_CONNECT_PENDING)
+    return;
+
+  ByteBufferWriter response;
+  response.WriteUInt8(5);              // Socks version
+  response.WriteUInt8((result != 0));  // 0x01 is generic error
+  response.WriteUInt8(0);              // reserved
+  response.WriteUInt8(1);              // IPv4 address
+  response.WriteUInt32(addr.ip());
+  response.WriteUInt16(addr.port());
+  DirectSend(response);
+  BufferInput(false);
+  state_ = SS_TUNNEL;
+}
+
+void AsyncSocksProxyServerSocket::Error(int error) {
+  state_ = SS_ERROR;
+  BufferInput(false);
+  Close();
+  SetError(SOCKET_EACCES);
+  SignalCloseEvent(this, error);
+}
+
+}  // namespace rtc