cfsocket.cpp

很牛的GUI源码wxWidgets-2.8.0.zip 可在多种平台下运行.

  child_socket = GSocket_WaitConnection(m_socket);

  if (!wait)
    GSocket_SetNonBlocking(m_socket, 0);

  if (!child_socket)
    return false;

  sock.m_type = wxSOCKET_BASE;
  sock.m_socket = child_socket;
  sock.m_connected = true;

  GSocket_SetTimeout(sock.m_socket, sock.m_timeout * 1000);
  GSocket_SetCallback(sock.m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
                                     GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG,
                                     wx_socket_callback, (char *)&sock);
#endif

  return true;
}

wxSocketBase *wxSocketServer::Accept(bool wait)
{
  wxSocketBase* sock = new wxSocketBase();

  sock->SetFlags(m_flags);

  if (!AcceptWith(*sock, wait))
  {
    sock->Destroy();
    sock = NULL;
  }

  return sock;
}

bool wxSocketServer::WaitForAccept(long seconds, long milliseconds)
{
  return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG);
}

// ==========================================================================
// wxSocketClient
// ==========================================================================

// --------------------------------------------------------------------------
// Ctor and dtor
// --------------------------------------------------------------------------

wxSocketClient::wxSocketClient(wxSocketFlags flags)
              : wxSocketBase(flags, wxSOCKET_CLIENT)
{
}

wxSocketClient::~wxSocketClient()
{
}

// --------------------------------------------------------------------------
// Connect
// --------------------------------------------------------------------------

bool wxSocketClient::Connect(wxSockAddress& addr_man, bool wait)
{
  GSocketError err;

  if (m_socket)
  {
    // Shutdown and destroy the socket
    Close();
    GSocket_destroy(m_socket);
  }

  m_socket = GSocket_new();
  m_connected = false;
  m_establishing = false;

  if (!m_socket)
    return false;

  GSocket_SetTimeout(m_socket, m_timeout * 1000);
  GSocket_SetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
                                GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG,
                                wx_socket_callback, (char *)this);

  // If wait == false, then the call should be nonblocking.
  // When we are finished, we put the socket to blocking mode
  // again.

  if (!wait)
    GSocket_SetNonBlocking(m_socket, 1);

  GSocket_SetPeer(m_socket, addr_man.GetAddress());
  err = GSocket_Connect(m_socket, GSOCK_STREAMED);

  if (!wait)
    GSocket_SetNonBlocking(m_socket, 0);

  if (err != GSOCK_NOERROR)
  {
    if (err == GSOCK_WOULDBLOCK)
      m_establishing = true;

    return false;
  }

  m_connected = true;
  return true;
}

bool wxSocketClient::WaitOnConnect(long seconds, long milliseconds)
{
  if (m_connected)                      // Already connected
    return true;

  if (!m_establishing || !m_socket)     // No connection in progress
    return false;

  return _Wait(seconds, milliseconds, GSOCK_CONNECTION_FLAG | GSOCK_LOST_FLAG);
}

// ==========================================================================
// wxDatagramSocket
// ==========================================================================

/* NOTE: experimental stuff - might change */

wxDatagramSocket::wxDatagramSocket( wxSockAddress& addr,
                                    wxSocketFlags flags )
                : wxSocketBase( flags, wxSOCKET_DATAGRAM )
{
#if 0
  // Create the socket
  m_socket = GSocket_new();

  if (!m_socket)
    return;

  // Setup the socket as non connection oriented
  GSocket_SetLocal(m_socket, addr.GetAddress());
  if( GSocket_SetNonOriented(m_socket) != GSOCK_NOERROR )
  {
    GSocket_destroy(m_socket);
    m_socket = NULL;
    return;
  }

  // Initialize all stuff
  m_connected = false;
  m_establishing = false;
  GSocket_SetTimeout( m_socket, m_timeout );
  GSocket_SetCallback( m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
                                 GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG,
                                 wx_socket_callback, (char*)this );
#endif
}

wxDatagramSocket& wxDatagramSocket::RecvFrom( wxSockAddress& addr,
                                              void* buf,
                                              wxUint32 nBytes )
{
    Read(buf, nBytes);
    GetPeer(addr);
    return (*this);
}

wxDatagramSocket& wxDatagramSocket::SendTo( wxSockAddress& addr,
                                            const void* buf,
                                            wxUint32 nBytes )
{
    GSocket_SetPeer(m_socket, addr.GetAddress());
    Write(buf, nBytes);
    return (*this);
}

/*
 * -------------------------------------------------------------------------
 * GAddress
 * -------------------------------------------------------------------------
 */

/* CHECK_ADDRESS verifies that the current address family is either
 * GSOCK_NOFAMILY or GSOCK_*family*, and if it is GSOCK_NOFAMILY, it
 * initalizes it to be a GSOCK_*family*. In other cases, it returns
 * an appropiate error code.
 *
 * CHECK_ADDRESS_RETVAL does the same but returning 'retval' on error.
 */
#define CHECK_ADDRESS(address, family)                              \
{                                                                   \
  if (address->m_family == GSOCK_NOFAMILY)                          \
    if (_GAddress_Init_##family(address) != GSOCK_NOERROR)          \
      return address->m_error;                                      \
  if (address->m_family != GSOCK_##family)                          \
  {                                                                 \
    address->m_error = GSOCK_INVADDR;                               \
    return GSOCK_INVADDR;                                           \
  }                                                                 \
}

#define CHECK_ADDRESS_RETVAL(address, family, retval)               \
{                                                                   \
  if (address->m_family == GSOCK_NOFAMILY)                          \
    if (_GAddress_Init_##family(address) != GSOCK_NOERROR)          \
      return retval;                                                \
  if (address->m_family != GSOCK_##family)                          \
  {                                                                 \
    address->m_error = GSOCK_INVADDR;                               \
    return retval;                                                  \
  }                                                                 \
}


GAddress *GAddress_new(void)
{
  GAddress *address;

  if ((address = (GAddress *) malloc(sizeof(GAddress))) == NULL)
    return NULL;

  address->m_family  = GSOCK_NOFAMILY;
  address->m_addr    = NULL;
  address->m_len     = 0;

  return address;
}

GAddress *GAddress_copy(GAddress *address)
{
  GAddress *addr2;

  assert(address != NULL);

  if ((addr2 = (GAddress *) malloc(sizeof(GAddress))) == NULL)
    return NULL;

  memcpy(addr2, address, sizeof(GAddress));

  if (address->m_addr && address->m_len > 0)
  {
    addr2->m_addr = (struct sockaddr *)malloc(addr2->m_len);
    if (addr2->m_addr == NULL)
    {
      free(addr2);
      return NULL;
    }

    memcpy(addr2->m_addr, address->m_addr, addr2->m_len);
  }

  return addr2;
}

void GAddress_destroy(GAddress *address)
{
  assert( address != NULL );

  if (address->m_addr)
    free(address->m_addr);

  free(address);
}

void GAddress_SetFamily(GAddress *address, GAddressType type)
{
  assert(address != NULL);

  address->m_family = type;
}

GAddressType GAddress_GetFamily(GAddress *address)
{
  assert( address != NULL );

  return address->m_family;
}

GSocketError _GAddress_translate_from(GAddress *address,
                                      struct sockaddr *addr, int len)
{
  address->m_realfamily = addr->sa_family;
  switch (addr->sa_family)
  {
    case AF_INET:
      address->m_family = GSOCK_INET;
      break;

    case AF_UNIX:
      address->m_family = GSOCK_UNIX;
      break;

#ifdef AF_INET6
    case AF_INET6:
      address->m_family = GSOCK_INET6;
      break;
#endif

    default:
    {
      address->m_error = GSOCK_INVOP;
      return GSOCK_INVOP;
    }
  }

  if (address->m_addr)
    free(address->m_addr);

  address->m_len  = len;
  address->m_addr = (struct sockaddr *)malloc(len);

  if (address->m_addr == NULL)
  {
    address->m_error = GSOCK_MEMERR;
    return GSOCK_MEMERR;
  }

  memcpy(address->m_addr, addr, len);

  return GSOCK_NOERROR;
}

GSocketError _GAddress_translate_to(GAddress *address,
                                    struct sockaddr **addr, int *len)
{
  if (!address->m_addr)
  {
    address->m_error = GSOCK_INVADDR;
    return GSOCK_INVADDR;
  }

  *len = address->m_len;
  *addr = (struct sockaddr *)malloc(address->m_len);
  if (*addr == NULL)
  {
    address->m_error = GSOCK_MEMERR;
    return GSOCK_MEMERR;
  }

  memcpy(*addr, address->m_addr, address->m_len);
  return GSOCK_NOERROR;
}

/*
 * -------------------------------------------------------------------------
 * Internet address family
 * -------------------------------------------------------------------------
 */

GSocketError _GAddress_Init_INET(GAddress *address)
{
  address->m_len  = sizeof(struct sockaddr_in);
  address->m_addr = (struct sockaddr *) malloc(address->m_len);
  if (address->m_addr == NULL)
  {
    address->m_error = GSOCK_MEMERR;
    return GSOCK_MEMERR;
  }

  memset( address->m_addr , 0 , address->m_len ) ;
  address->m_family = GSOCK_INET;
  address->m_realfamily = PF_INET;
  ((struct sockaddr_in *)address->m_addr)->sin_family = AF_INET;
  ((struct sockaddr_in *)address->m_addr)->sin_addr.s_addr = INADDR_ANY;

  return GSOCK_NOERROR;
}

GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname)
{
  struct hostent *he;
  struct in_addr *addr;

  assert( address != NULL );
  CHECK_ADDRESS( address, INET );

  addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);

  // If it is a numeric host name, convert it now
#if defined(HAVE_INET_ATON)
  if (inet_aton(hostname, addr) == 0)
  {
#elif defined(HAVE_INET_ADDR)
  if ( (addr->s_addr = inet_addr(hostname)) == -1 )
  {
#else
  // Use gethostbyname by default
#ifndef __WXMAC__
  int val = 1;  // VA doesn't like constants in conditional expressions
  if (val)
#endif
  {
#endif
    struct in_addr *array_addr;

    // It is a real name, we solve it
    if ((he = gethostbyname(hostname)) == NULL)
    {
      // Reset to invalid address
      addr->s_addr = INADDR_NONE;
      address->m_error = GSOCK_NOHOST;
      return GSOCK_NOHOST;
    }
    array_addr = (struct in_addr *) *(he->h_addr_list);
    addr->s_addr = array_addr[0].s_addr;
  }

  return GSOCK_NOERROR;
}

GSocketError GAddress_INET_SetAnyAddress(GAddress *address)
{
  return GAddress_INET_SetHostAddress(address, INADDR_ANY);
}

GSocketError GAddress_INET_SetHostAddress(GAddress *address,
                                          unsigned long hostaddr)
{
  struct in_addr *addr;

  assert( address != NULL );
  CHECK_ADDRESS( address, INET );

  addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
  addr->s_addr = htonl(hostaddr) ;

  return GSOCK_NOERROR;
}

GSocketError GAddress_INET_SetPortName(GAddress *address, const char *port,
                                       const char *protocol)
{
  struct servent *se;
  struct sockaddr_in *addr;

  assert( address != NULL );
  CHECK_ADDRESS( address, INET );

  if (!port)
  {
    address->m_error = GSOCK_INVPORT;
    return GSOCK_INVPORT;
  }

  se = getservbyname(port, protocol);
  if (!se)
  {
    // the cast to int suppresses compiler warnings
    // about subscript having the type char
    if (isdigit((int)port[0]))
    {
      int port_int;

      port_int = atoi(port);
      addr = (struct sockaddr_in *)address->m_addr;
      addr->sin_port = htons(port_int);
      return GSOCK_NOERROR;
    }

    address->m_error = GSOCK_INVPORT;
    return GSOCK_INVPORT;
  }

  addr = (struct sockaddr_in *)address->m_addr;
  addr->sin_port = se->s_port;

  return GSOCK_NOERROR;
}

GSocketError GAddress_INET_SetPort(GAddress *address, unsigned short port)
{
  struct sockaddr_in *addr;

  assert( address != NULL );
  CHECK_ADDRESS( address, INET );

  addr = (struct sockaddr_in *)address->m_addr;
  addr->sin_port = htons(port);

  return GSOCK_NOERROR;
}

GSocketError GAddress_INET_GetHostName(GAddress *address, char *hostname, size_t sbuf)
{
  struct hostent *he;
  char *addr_buf;
  struct sockaddr_in *addr;

  assert( address != NULL );
  CHECK_ADDRESS( address, INET );

  addr = (struct sockaddr_in *)address->m_addr;
  addr_buf = (char *)&(addr->sin_addr);

  he = gethostbyaddr(addr_buf, sizeof(addr->sin_addr), AF_INET);
  if (he == NULL)
  {
    address->m_error = GSOCK_NOHOST;
    return GSOCK_NOHOST;
  }

  strncpy(hostname, he->h_name, sbuf);

  return GSOCK_NOERROR;
}

unsigned long GAddress_INET_GetHostAddress(GAddress *address)
{
  struct sockaddr_in *addr;

  assert( address != NULL );
  CHECK_ADDRESS_RETVAL( address, INET, 0 );

  addr = (struct sockaddr_in *)address->m_addr;

  return ntohl(addr->sin_addr.s_addr) ;
}

unsigned short GAddress_INET_GetPort(GAddress *address)
{
  struct sockaddr_in *addr;

  assert( address != NULL );
  CHECK_ADDRESS_RETVAL( address, INET, 0 );

  addr = (struct sockaddr_in *)address->m_addr;

  return ntohs(addr->sin_port);
}

/*
 * -------------------------------------------------------------------------
 * Unix address family
 * -------------------------------------------------------------------------
 */

GSocketError _GAddress_Init_UNIX(GAddress *address)
{
  address->m_len  = sizeof(struct sockaddr_un);
  address->m_addr = (struct sockaddr *)malloc(address->m_len);
  if (address->m_addr == NULL)
  {
    address->m_error = GSOCK_MEMERR;
    return GSOCK_MEMERR;
  }

  address->m_family = GSOCK_UNIX;
  address->m_realfamily = PF_UNIX;
  ((struct sockaddr_un *)address->m_addr)->sun_family = AF_UNIX;
  ((struct sockaddr_un *)address->m_addr)->sun_path[0] = 0;

  return GSOCK_NOERROR;
}

#define UNIX_SOCK_PATHLEN (sizeof(addr->sun_path)/sizeof(addr->sun_path[0]))

GSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path)
{
  struct sockaddr_un *addr;

  assert( address != NULL );
  CHECK_ADDRESS( address, UNIX );

  addr = ((struct sockaddr_un *)address->m_addr);
  strncpy(addr->sun_path, path, UNIX_SOCK_PATHLEN);
  addr->sun_path[UNIX_SOCK_PATHLEN - 1] = '\0';

  return GSOCK_NOERROR;
}

GSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf)
{
  struct sockaddr_un *addr;

  assert( address != NULL );
  CHECK_ADDRESS( address, UNIX );