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/*
Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
MA 02110-1301 USA.
*/
/* The socket wrapper source implements a Socket class that hides the
* differences between Berkely style sockets and Windows sockets, allowing
* transparent TCP access.
*/
#include "runtime.hpp"
#include "socket_wrapper.hpp"
#ifndef _WIN32
#include <errno.h>
#include <netdb.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <sys/ioctl.h>
#include <string.h>
#include <fcntl.h>
#endif // _WIN32
#if defined(__sun) || defined(__SCO_VERSION__)
#include <sys/filio.h>
#endif
#ifdef _WIN32
const int SOCKET_EINVAL = WSAEINVAL;
const int SOCKET_EWOULDBLOCK = WSAEWOULDBLOCK;
const int SOCKET_EAGAIN = WSAEWOULDBLOCK;
#else
const int SOCKET_EINVAL = EINVAL;
const int SOCKET_EWOULDBLOCK = EWOULDBLOCK;
const int SOCKET_EAGAIN = EAGAIN;
#endif // _WIN32
namespace {
extern "C" long system_recv(void *ptr, void *buf, size_t count)
{
yaSSL::socket_t *socket = (yaSSL::socket_t *) ptr;
return ::recv(*socket, reinterpret_cast<char *>(buf), count, 0);
}
extern "C" long system_send(void *ptr, const void *buf, size_t count)
{
yaSSL::socket_t *socket = (yaSSL::socket_t *) ptr;
return ::send(*socket, reinterpret_cast<const char *>(buf), count, 0);
}
}
namespace yaSSL {
Socket::Socket(socket_t s)
: socket_(s), wouldBlock_(false), nonBlocking_(false),
ptr_(&socket_), send_func_(system_send), recv_func_(system_recv)
{}
void Socket::set_fd(socket_t s)
{
socket_ = s;
}
socket_t Socket::get_fd() const
{
return socket_;
}
Socket::~Socket()
{
// don't close automatically now
}
void Socket::closeSocket()
{
if (socket_ != INVALID_SOCKET) {
#ifdef _WIN32
closesocket(socket_);
#else
close(socket_);
#endif
socket_ = INVALID_SOCKET;
}
}
uint Socket::get_ready() const
{
#ifdef _WIN32
unsigned long ready = 0;
ioctlsocket(socket_, FIONREAD, &ready);
#else
/*
64-bit Solaris requires the variable passed to
FIONREAD be a 32-bit value.
*/
unsigned int ready = 0;
ioctl(socket_, FIONREAD, &ready);
#endif
return ready;
}
void Socket::set_transport_ptr(void *ptr)
{
ptr_ = ptr;
}
void Socket::set_transport_recv_function(yaSSL_recv_func_t recv_func)
{
recv_func_ = recv_func;
}
void Socket::set_transport_send_function(yaSSL_send_func_t send_func)
{
send_func_ = send_func;
}
uint Socket::send(const byte* buf, unsigned int sz, unsigned int& written)
{
const byte* pos = buf;
const byte* end = pos + sz;
wouldBlock_ = false;
/* Remove send()/recv() hooks once non-blocking send is implemented. */
while (pos != end) {
int sent = send_func_(ptr_, pos, static_cast<int>(end - pos));
if (sent == -1) {
if (get_lastError() == SOCKET_EWOULDBLOCK ||
get_lastError() == SOCKET_EAGAIN) {
wouldBlock_ = true; // would have blocked this time only
nonBlocking_ = true; // nonblocking, win32 only way to tell
return 0;
}
return static_cast<uint>(-1);
}
pos += sent;
written += sent;
}
return sz;
}
uint Socket::receive(byte* buf, unsigned int sz)
{
wouldBlock_ = false;
int recvd = recv_func_(ptr_, buf, sz);
// idea to seperate error from would block by arnetheduck@gmail.com
if (recvd == -1) {
if (get_lastError() == SOCKET_EWOULDBLOCK ||
get_lastError() == SOCKET_EAGAIN) {
wouldBlock_ = true; // would have blocked this time only
nonBlocking_ = true; // socket nonblocking, win32 only way to tell
return 0;
}
}
else if (recvd == 0)
return static_cast<uint>(-1);
return recvd;
}
void Socket::shutDown(int how)
{
shutdown(socket_, how);
}
int Socket::get_lastError()
{
#ifdef _WIN32
return WSAGetLastError();
#else
return errno;
#endif
}
bool Socket::WouldBlock() const
{
return wouldBlock_;
}
bool Socket::IsNonBlocking() const
{
return nonBlocking_;
}
void Socket::set_lastError(int errorCode)
{
#ifdef _WIN32
WSASetLastError(errorCode);
#else
errno = errorCode;
#endif
}
} // namespace
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