[NaCl SDK] Add UDP and TCP Sockets

native_client_sdk/src/libraries/nacl_io/mount_node_socket.h

+// Copyright (c) 2013 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.
+
+#ifndef LIBRARIES_NACL_IO_MOUNT_NODE_SOCKET_H_
+#define LIBRARIES_NACL_IO_MOUNT_NODE_SOCKET_H_
+
+#include "nacl_io/ossocket.h"
+#ifdef PROVIDES_SOCKET_API
+
+#include <ppapi/c/pp_errors.h>
+#include <ppapi/c/pp_resource.h>
+#include <ppapi/c/ppb_net_address.h>
+
+#include "nacl_io/mount.h"
+#include "nacl_io/pepper_interface.h"
+
+namespace nacl_io {
+
+/* Only allow single maximum transfers of 64K or less. Socket users
+ * should be looping on Send/Recv size. */
+static const size_t MAX_SOCK_TRANSFER = 65536;
+
+class MountSocket;
+
+class MountNodeSocket : public MountNode {
+ public:
+  explicit MountNodeSocket(Mount* mount);
+
+ protected:
+  virtual void Destroy();
+  virtual Error Init(int flags) = 0;
+
+ public:
+  virtual uint32_t GetEventStatus();
+
+  // Normal read/write operations on a file (recv/send).
+  virtual Error Read(size_t offs, void* buf, size_t count, int* out_bytes);
+  virtual Error Write(size_t offs,
+                      const void* buf,
+                      size_t count,
+                      int* out_bytes);
+
+  // Unsuported Functions
+  virtual Error Accept(const struct sockaddr* addr, socklen_t len);
+  virtual Error Listen(int backlog);
+  virtual Error GetSockOpt(int lvl, int optname, void* optval, socklen_t* len);
+  virtual Error SetSockOpt(int lvl,
+                           int optname,
+                           const void* optval,
+                           socklen_t len);
+  virtual Error Shutdown(int how);
+  virtual Error MMap(void* addr,
+                     size_t length,
+                     int prot,
+                     int flags,
+                     size_t offset,
+                     void** out_addr);
+
+  // Normal Functions.
+  virtual Error Bind(const struct sockaddr* addr, socklen_t len);
+  virtual Error Connect(const struct sockaddr* addr, socklen_t len);
+  virtual Error Recv(void* buf, size_t len, int flags, int* out_len);
+  virtual Error RecvFrom(void* buf,
+                         size_t len,
+                         int flags,
+                         struct sockaddr* src_addr,
+                         socklen_t* addrlen,
+                         int* out_len);
+
+  virtual Error Send(const void* buf, size_t len, int flags, int* out_len);
+  virtual Error SendTo(const void* buf,
+                       size_t len,
+                       int flags,
+                       const struct sockaddr* dest_addr,
+                       socklen_t addrlen,
+                       int* out_len);
+
+  virtual Error GetPeerName(struct sockaddr* addr, socklen_t* len);
+  virtual Error GetSockName(struct sockaddr* addr, socklen_t* len);
+
+ protected:
+  NetAddressInterface* NetAddress();
+  PP_Resource SockAddrToResource(const struct sockaddr* addr, socklen_t len);
+  socklen_t ResourceToSockAddr(PP_Resource addr,
+                               socklen_t len,
+                               struct sockaddr* out_addr);
+
+  bool IsEquivalentAddress(PP_Resource addr1, PP_Resource addr2);
+
+ protected:
+  PP_Resource socket_resource_;
+  PP_Resource local_addr_;
+  PP_Resource remote_addr_;
+
+  friend class KernelProxy;
+  friend class MountSocket;
+};
+
+
+}  // namespace nacl_io
+
+
+#endif  // PROVIDES_SOCKET_API
+#endif  // LIBRARIES_NACL_IO_MOUNT_NODE_SOCKET_H_