Pulled a significant portion of Socket implementation into BaseSocket in order to prepare for the s…

runtime/bin/socket_common.cc

+// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#if !defined(DART_IO_DISABLED)
+
+#include "bin/socket_common.h"
+#include "bin/socket.h"
+
+#include "bin/dartutils.h"
+#include "bin/io_buffer.h"
+#include "bin/isolate_data.h"
+#include "bin/lockers.h"
+#include "bin/thread.h"
+#include "bin/utils.h"
+
+#include "include/dart_api.h"
+
+#include "platform/globals.h"
+#include "platform/utils.h"
+
+namespace dart {
+namespace bin {
+
+static const int kSocketIdNativeField = 0;
+
+bool short_socket_read = false;
+
+bool short_socket_write = false;
+
+void FUNCTION_NAME(InternetAddress_Parse)(Dart_NativeArguments args) {
+  const char* address =
+      DartUtils::GetStringValue(Dart_GetNativeArgument(args, 0));
+  ASSERT(address != NULL);
+  RawAddr raw;
+  memset(&raw, 0, sizeof(raw));
+  int type = strchr(address, ':') == NULL ? SocketAddress::TYPE_IPV4
+                                          : SocketAddress::TYPE_IPV6;
+  if (type == SocketAddress::TYPE_IPV4) {
+    raw.addr.sa_family = AF_INET;
+  } else {
+    raw.addr.sa_family = AF_INET6;
+  }
+  bool ok = BaseSocket::ParseAddress(type, address, &raw);
+  if (!ok) {
+    Dart_SetReturnValue(args, Dart_Null());
+  } else {
+    Dart_SetReturnValue(args, SocketAddress::ToTypedData(raw));
+  }
+}
+
+
+void FUNCTION_NAME(NetworkInterface_ListSupported)(Dart_NativeArguments args) {
+  Dart_SetReturnValue(args, Dart_NewBoolean(Socket::ListInterfacesSupported()));
+}
+
+
+void FUNCTION_NAME(BaseSocket_IsBindError)(Dart_NativeArguments args) {
+  intptr_t error_number =
+      DartUtils::GetIntptrValue(Dart_GetNativeArgument(args, 1));
+  bool is_bind_error = BaseSocket::IsBindError(error_number);
+  Dart_SetReturnValue(args, is_bind_error ? Dart_True() : Dart_False());
+}
+
+
+void FUNCTION_NAME(BaseSocket_Available)(Dart_NativeArguments args) {
+  intptr_t socket =
+      BaseSocket::GetSocketIdNativeField(Dart_GetNativeArgument(args, 0));
+  intptr_t available = BaseSocket::Available(socket);
+  if (available >= 0) {
+    Dart_SetReturnValue(args, Dart_NewInteger(available));
+  } else {
+    // Available failed. Mark socket as having data, to trigger a future read
+    // event where the actual error can be reported.
+    Dart_SetReturnValue(args, Dart_NewInteger(1));
+  }
+}
+
+
+void FUNCTION_NAME(BaseSocket_Read)(Dart_NativeArguments args) {
+  intptr_t socket =
+      BaseSocket::GetSocketIdNativeField(Dart_GetNativeArgument(args, 0));
+  int64_t length = 0;
+  if (DartUtils::GetInt64Value(Dart_GetNativeArgument(args, 1), &length)) {
+    if (short_socket_read) {
+      length = (length + 1) / 2;
+    }
+    uint8_t* buffer = NULL;
+    Dart_Handle result = IOBuffer::Allocate(length, &buffer);
+    if (Dart_IsError(result)) {
+      Dart_PropagateError(result);
+    }
+    ASSERT(buffer != NULL);
+    intptr_t bytes_read = BaseSocket::Read(socket, buffer, length);
+    if (bytes_read == length) {
+      Dart_SetReturnValue(args, result);
+    } else if (bytes_read > 0) {
+      uint8_t* new_buffer = NULL;
+      Dart_Handle new_result = IOBuffer::Allocate(bytes_read, &new_buffer);
+      if (Dart_IsError(new_result)) {
+        Dart_PropagateError(new_result);
+      }
+      ASSERT(new_buffer != NULL);
+      memmove(new_buffer, buffer, bytes_read);
+      Dart_SetReturnValue(args, new_result);
+    } else if (bytes_read == 0) {
+      // On MacOS when reading from a tty Ctrl-D will result in reading one
+      // less byte then reported as available.
+      Dart_SetReturnValue(args, Dart_Null());
+    } else {
+      ASSERT(bytes_read == -1);
+      Dart_SetReturnValue(args, DartUtils::NewDartOSError());
+    }
+  } else {
+    OSError os_error(-1, "Invalid argument", OSError::kUnknown);
+    Dart_SetReturnValue(args, DartUtils::NewDartOSError(&os_error));
+  }
+}
+
+
+void FUNCTION_NAME(BaseSocket_RecvFrom)(Dart_NativeArguments args) {
+  intptr_t socket =
+      BaseSocket::GetSocketIdNativeField(Dart_GetNativeArgument(args, 0));
+
+  // TODO(sgjesse): Use a MTU value here. Only the loopback adapter can
+  // handle 64k datagrams.
+  IsolateData* isolate_data =
+      reinterpret_cast<IsolateData*>(Dart_CurrentIsolateData());
+  if (isolate_data->udp_receive_buffer == NULL) {
+    isolate_data->udp_receive_buffer =
+        reinterpret_cast<uint8_t*>(malloc(65536));
+  }
+  RawAddr addr;
+  intptr_t bytes_read = BaseSocket::RecvFrom(
+      socket, isolate_data->udp_receive_buffer, 65536, &addr);
+  if (bytes_read == 0) {
+    Dart_SetReturnValue(args, Dart_Null());
+    return;
+  }
+  if (bytes_read < 0) {
+    ASSERT(bytes_read == -1);
+    Dart_SetReturnValue(args, DartUtils::NewDartOSError());
+    return;
+  }
+  // Datagram data read. Copy into buffer of the exact size,
+  ASSERT(bytes_read > 0);
+  uint8_t* data_buffer = NULL;
+  Dart_Handle data = IOBuffer::Allocate(bytes_read, &data_buffer);
+  if (Dart_IsError(data)) {
+    Dart_PropagateError(data);
+  }
+  ASSERT(data_buffer != NULL);
+  memmove(data_buffer, isolate_data->udp_receive_buffer, bytes_read);
+
+  // Get the port and clear it in the sockaddr structure.
+  int port = SocketAddress::GetAddrPort(addr);
+  if (addr.addr.sa_family == AF_INET) {
+    addr.in.sin_port = 0;
+  } else {
+    ASSERT(addr.addr.sa_family == AF_INET6);
+    addr.in6.sin6_port = 0;
+  }
+  // Format the address to a string using the numeric format.
+  char numeric_address[INET6_ADDRSTRLEN];
+  BaseSocket::FormatNumericAddress(addr, numeric_address, INET6_ADDRSTRLEN);
+
+  // Create a Datagram object with the data and sender address and port.
+  const int kNumArgs = 4;
+  Dart_Handle dart_args[kNumArgs];
+  dart_args[0] = data;
+  dart_args[1] = Dart_NewStringFromCString(numeric_address);
+  if (Dart_IsError(dart_args[1])) {
+    Dart_PropagateError(dart_args[1]);
+  }
+  dart_args[2] = SocketAddress::ToTypedData(addr);
+  dart_args[3] = Dart_NewInteger(port);
+  if (Dart_IsError(dart_args[3])) {
+    Dart_PropagateError(dart_args[3]);
+  }
+  // TODO(sgjesse): Cache the _makeDatagram function somewhere.
+  Dart_Handle io_lib = Dart_LookupLibrary(DartUtils::NewString("dart:io"));
+  if (Dart_IsError(io_lib)) {
+    Dart_PropagateError(io_lib);
+  }
+  Dart_Handle result = Dart_Invoke(
+      io_lib, DartUtils::NewString("_makeDatagram"), kNumArgs, dart_args);
+  Dart_SetReturnValue(args, result);
+}
+
+
+void FUNCTION_NAME(BaseSocket_WriteList)(Dart_NativeArguments args) {
+  intptr_t socket =
+      BaseSocket::GetSocketIdNativeField(Dart_GetNativeArgument(args, 0));
+  Dart_Handle buffer_obj = Dart_GetNativeArgument(args, 1);
+  ASSERT(Dart_IsList(buffer_obj));
+  intptr_t offset = DartUtils::GetIntptrValue(Dart_GetNativeArgument(args, 2));
+  intptr_t length = DartUtils::GetIntptrValue(Dart_GetNativeArgument(args, 3));
+  bool short_write = false;
+  if (short_socket_write) {
+    if (length > 1) {
+      short_write = true;
+    }
+    length = (length + 1) / 2;
+  }
+  Dart_TypedData_Type type;
+  uint8_t* buffer = NULL;
+  intptr_t len;
+  Dart_Handle result = Dart_TypedDataAcquireData(
+      buffer_obj, &type, reinterpret_cast<void**>(&buffer), &len);
+  if (Dart_IsError(result)) {
+    Dart_PropagateError(result);
+  }
+  ASSERT((offset + length) <= len);
+  buffer += offset;
+  intptr_t bytes_written = BaseSocket::Write(socket, buffer, length);
+  if (bytes_written >= 0) {
+    Dart_TypedDataReleaseData(buffer_obj);
+    if (short_write) {
+      // If the write was forced 'short', indicate by returning the negative
+      // number of bytes. A forced short write may not trigger a write event.
+      Dart_SetReturnValue(args, Dart_NewInteger(-bytes_written));
+    } else {
+      Dart_SetReturnValue(args, Dart_NewInteger(bytes_written));
+    }
+  } else {
+    // Extract OSError before we release data, as it may override the error.
+    OSError os_error;
+    Dart_TypedDataReleaseData(buffer_obj);
+    Dart_SetReturnValue(args, DartUtils::NewDartOSError(&os_error));
+  }
+}
+
+
+void FUNCTION_NAME(BaseSocket_SendTo)(Dart_NativeArguments args) {
+  intptr_t socket =
+      BaseSocket::GetSocketIdNativeField(Dart_GetNativeArgument(args, 0));
+  Dart_Handle buffer_obj = Dart_GetNativeArgument(args, 1);
+  intptr_t offset = DartUtils::GetIntptrValue(Dart_GetNativeArgument(args, 2));
+  intptr_t length = DartUtils::GetIntptrValue(Dart_GetNativeArgument(args, 3));
+  Dart_Handle address_obj = Dart_GetNativeArgument(args, 4);
+  ASSERT(Dart_IsList(address_obj));
+  RawAddr addr;
+  SocketAddress::GetSockAddr(address_obj, &addr);
+  int64_t port = DartUtils::GetInt64ValueCheckRange(
+      Dart_GetNativeArgument(args, 5), 0, 65535);
+  SocketAddress::SetAddrPort(&addr, port);
+  Dart_TypedData_Type type;
+  uint8_t* buffer = NULL;
+  intptr_t len;
+  Dart_Handle result = Dart_TypedDataAcquireData(
+      buffer_obj, &type, reinterpret_cast<void**>(&buffer), &len);
+  if (Dart_IsError(result)) {
+    Dart_PropagateError(result);
+  }
+  ASSERT((offset + length) <= len);
+  buffer += offset;
+  intptr_t bytes_written = BaseSocket::SendTo(socket, buffer, length, addr);
+  if (bytes_written >= 0) {
+    Dart_TypedDataReleaseData(buffer_obj);
+    Dart_SetReturnValue(args, Dart_NewInteger(bytes_written));
+  } else {
+    // Extract OSError before we release data, as it may override the error.
+    OSError os_error;
+    Dart_TypedDataReleaseData(buffer_obj);
+    Dart_SetReturnValue(args, DartUtils::NewDartOSError(&os_error));
+  }
+}
+
+
+void FUNCTION_NAME(BaseSocket_GetPort)(Dart_NativeArguments args) {
+  intptr_t socket =
+      BaseSocket::GetSocketIdNativeField(Dart_GetNativeArgument(args, 0));
+  OSError os_error;
+  intptr_t port = BaseSocket::GetPort(socket);
+  if (port > 0) {
+    Dart_SetReturnValue(args, Dart_NewInteger(port));
+  } else {
+    Dart_SetReturnValue(args, DartUtils::NewDartOSError());
+  }
+}
+
+
+void FUNCTION_NAME(BaseSocket_GetRemotePeer)(Dart_NativeArguments args) {
+  intptr_t socket =
+      BaseSocket::GetSocketIdNativeField(Dart_GetNativeArgument(args, 0));
+  OSError os_error;
+  intptr_t port = 0;
+  SocketAddress* addr = BaseSocket::GetRemotePeer(socket, &port);
+  if (addr != NULL) {
+    Dart_Handle list = Dart_NewList(2);
+
+    Dart_Handle entry = Dart_NewList(3);
+    Dart_ListSetAt(entry, 0, Dart_NewInteger(addr->GetType()));
+    Dart_ListSetAt(entry, 1, Dart_NewStringFromCString(addr->as_string()));
+
+    RawAddr raw = addr->addr();
+    Dart_ListSetAt(entry, 2, SocketAddress::ToTypedData(raw));
+
+    Dart_ListSetAt(list, 0, entry);
+    Dart_ListSetAt(list, 1, Dart_NewInteger(port));
+    Dart_SetReturnValue(args, list);
+    delete addr;
+  } else {
+    Dart_SetReturnValue(args, DartUtils::NewDartOSError());
+  }
+}
+
+
+void FUNCTION_NAME(BaseSocket_GetError)(Dart_NativeArguments args) {
+  intptr_t socket =
+      BaseSocket::GetSocketIdNativeField(Dart_GetNativeArgument(args, 0));
+  OSError os_error;
+  BaseSocket::GetError(socket, &os_error);
+  Dart_SetReturnValue(args, DartUtils::NewDartOSError(&os_error));
+}
+
+
+void FUNCTION_NAME(BaseSocket_GetType)(Dart_NativeArguments args) {
+  intptr_t socket =
+      BaseSocket::GetSocketIdNativeField(Dart_GetNativeArgument(args, 0));
+  OSError os_error;
+  intptr_t type = BaseSocket::GetType(socket);
+  if (type >= 0) {
+    Dart_SetReturnValue(args, Dart_NewInteger(type));
+  } else {
+    Dart_SetReturnValue(args, DartUtils::NewDartOSError());
+  }
+}
+
+
+void FUNCTION_NAME(BaseSocket_GetStdioHandle)(Dart_NativeArguments args) {
+  int64_t num =
+      DartUtils::GetInt64ValueCheckRange(Dart_GetNativeArgument(args, 1), 0, 2);
+  intptr_t socket = BaseSocket::GetStdioHandle(num);
+  BaseSocket::SetSocketIdNativeField(Dart_GetNativeArgument(args, 0), socket);
+  Dart_SetReturnValue(args, Dart_NewBoolean(socket >= 0));
+}
+
+
+void FUNCTION_NAME(BaseSocket_GetSocketId)(Dart_NativeArguments args) {
+  intptr_t id =
+      BaseSocket::GetSocketIdNativeField(Dart_GetNativeArgument(args, 0));
+  Dart_SetReturnValue(args, Dart_NewInteger(id));
+}
+
+
+void FUNCTION_NAME(BaseSocket_SetSocketId)(Dart_NativeArguments args) {
+  intptr_t id = DartUtils::GetIntptrValue(Dart_GetNativeArgument(args, 1));
+  BaseSocket::SetSocketIdNativeField(Dart_GetNativeArgument(args, 0), id);
+}
+
+
+void FUNCTION_NAME(BaseSocket_GetOption)(Dart_NativeArguments args) {
+  intptr_t socket =
+      BaseSocket::GetSocketIdNativeField(Dart_GetNativeArgument(args, 0));
+  int64_t option = DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 1));
+  intptr_t protocol = static_cast<intptr_t>(
+      DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 2)));
+  bool ok = false;
+  switch (option) {
+    case 0: {  // TCP_NODELAY.
+      bool enabled;
+      ok = BaseSocket::GetNoDelay(socket, &enabled);
+      if (ok) {
+        Dart_SetReturnValue(args, enabled ? Dart_True() : Dart_False());
+      }
+      break;
+    }
+    case 1: {  // IP_MULTICAST_LOOP.
+      bool enabled;
+      ok = BaseSocket::GetMulticastLoop(socket, protocol, &enabled);
+      if (ok) {
+        Dart_SetReturnValue(args, enabled ? Dart_True() : Dart_False());
+      }
+      break;
+    }
+    case 2: {  // IP_MULTICAST_TTL.
+      int value;
+      ok = BaseSocket::GetMulticastHops(socket, protocol, &value);
+      if (ok) {
+        Dart_SetReturnValue(args, Dart_NewInteger(value));
+      }
+      break;
+    }
+    case 3: {  // IP_MULTICAST_IF.
+      UNIMPLEMENTED();
+      break;
+    }
+    case 4: {  // IP_BROADCAST.
+      bool enabled;
+      ok = BaseSocket::GetBroadcast(socket, &enabled);
+      if (ok) {
+        Dart_SetReturnValue(args, enabled ? Dart_True() : Dart_False());
+      }
+      break;
+    }
+    default:
+      UNREACHABLE();
+      break;
+  }
+  // In case of failure the return value is not set above.
+  if (!ok) {
+    Dart_SetReturnValue(args, DartUtils::NewDartOSError());
+  }
+}
+
+
+void FUNCTION_NAME(BaseSocket_SetOption)(Dart_NativeArguments args) {
+  bool result = false;
+  intptr_t socket =
+      BaseSocket::GetSocketIdNativeField(Dart_GetNativeArgument(args, 0));
+  int64_t option = DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 1));
+  int64_t protocol = DartUtils::GetInt64ValueCheckRange(
+      Dart_GetNativeArgument(args, 2), SocketAddress::TYPE_IPV4,
+      SocketAddress::TYPE_IPV6);
+  switch (option) {
+    case 0:  // TCP_NODELAY.
+      result = BaseSocket::SetNoDelay(
+          socket, DartUtils::GetBooleanValue(Dart_GetNativeArgument(args, 3)));
+      break;
+    case 1:  // IP_MULTICAST_LOOP.
+      result = BaseSocket::SetMulticastLoop(
+          socket, protocol,
+          DartUtils::GetBooleanValue(Dart_GetNativeArgument(args, 3)));
+      break;
+    case 2:  // IP_MULTICAST_TTL.
+      result = BaseSocket::SetMulticastHops(
+          socket, protocol,
+          DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 3)));
+      break;
+    case 3: {  // IP_MULTICAST_IF.
+      UNIMPLEMENTED();
+      break;
+    }
+    case 4:  // IP_BROADCAST.
+      result = BaseSocket::SetBroadcast(
+          socket, DartUtils::GetBooleanValue(Dart_GetNativeArgument(args, 3)));
+      break;
+    default:
+      Dart_PropagateError(Dart_NewApiError("Value outside expected range"));
+      break;
+  }
+  if (result) {
+    Dart_SetReturnValue(args, Dart_Null());
+  } else {
+    Dart_SetReturnValue(args, DartUtils::NewDartOSError());
+  }
+}
+
+
+void FUNCTION_NAME(BaseSocket_JoinMulticast)(Dart_NativeArguments args) {
+  intptr_t socket =
+      BaseSocket::GetSocketIdNativeField(Dart_GetNativeArgument(args, 0));
+  RawAddr addr;
+  SocketAddress::GetSockAddr(Dart_GetNativeArgument(args, 1), &addr);
+  RawAddr interface;
+  if (Dart_GetNativeArgument(args, 2) != Dart_Null()) {
+    SocketAddress::GetSockAddr(Dart_GetNativeArgument(args, 2), &interface);
+  }
+  int interfaceIndex =
+      DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 3));
+  if (BaseSocket::JoinMulticast(socket, addr, interface, interfaceIndex)) {
+    Dart_SetReturnValue(args, Dart_Null());
+  } else {
+    Dart_SetReturnValue(args, DartUtils::NewDartOSError());
+  }
+}
+
+
+void FUNCTION_NAME(BaseSocket_LeaveMulticast)(Dart_NativeArguments args) {
+  intptr_t socket =
+      BaseSocket::GetSocketIdNativeField(Dart_GetNativeArgument(args, 0));
+  RawAddr addr;
+  SocketAddress::GetSockAddr(Dart_GetNativeArgument(args, 1), &addr);
+  RawAddr interface;
+  if (Dart_GetNativeArgument(args, 2) != Dart_Null()) {
+    SocketAddress::GetSockAddr(Dart_GetNativeArgument(args, 2), &interface);
+  }
+  int interfaceIndex =
+      DartUtils::GetIntegerValue(Dart_GetNativeArgument(args, 3));
+  if (Socket::LeaveMulticast(socket, addr, interface, interfaceIndex)) {
+    Dart_SetReturnValue(args, Dart_Null());
+  } else {
+    Dart_SetReturnValue(args, DartUtils::NewDartOSError());
+  }
+}
+
+
+void BaseSocket::SetSocketIdNativeField(Dart_Handle socket, intptr_t id) {
+  Dart_Handle err =
+      Dart_SetNativeInstanceField(socket, kSocketIdNativeField, id);
+  if (Dart_IsError(err)) {
+    Dart_PropagateError(err);
+  }
+}
+
+
+intptr_t BaseSocket::GetSocketIdNativeField(Dart_Handle socket_obj) {
+  intptr_t socket = 0;
+  Dart_Handle err =
+      Dart_GetNativeInstanceField(socket_obj, kSocketIdNativeField, &socket);
+  if (Dart_IsError(err)) {
+    Dart_PropagateError(err);
+  }
+  return socket;
+}
+
+}  // namespace bin
+}  // namespace dart
+
+#endif  // !defined(DART_IO_DISABLED)