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/*
* Socket compat code for win32.
*
* Copyright (c) 2007-2009 Marko Kreen, Skype Technologies OÜ
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _USUAL_SOCKET_WIN32_H_
#define _USUAL_SOCKET_WIN32_H_
typedef int socklen_t;
#define in_addr_t uint32_t
/*
* make recvmsg/sendmsg and fd related code compile
*/
struct iovec {
void *iov_base; /* Base address. */
size_t iov_len; /* Length. */
};
struct msghdr {
void *msg_name;
int msg_namelen;
struct iovec *msg_iov;
int msg_iovlen;
void *msg_control;
int msg_controllen;
int msg_flags;
};
#ifndef SCM_RIGHTS
#define SCM_RIGHTS 1
#endif
#ifndef CMSG_FIRSTHDR
struct cmsghdr {
int cmsg_len;
int cmsg_level;
int cmsg_type;
};
#define CMSG_DATA(cmsg) ((unsigned char *) ((struct cmsghdr *) (cmsg) + 1))
#define CMSG_ALIGN(len) (((len) + sizeof (size_t) - 1) \
& ~(sizeof (size_t) - 1))
#define CMSG_LEN(len) ((int)(CMSG_ALIGN(sizeof(struct cmsghdr))+(len)))
#define CMSG_FIRSTHDR(mhdr) \
((mhdr)->msg_controllen >= (int)sizeof(struct cmsghdr) ? \
(struct cmsghdr *)(mhdr)->msg_control : \
(struct cmsghdr *)NULL)
#define CMSG_NXTHDR(mhdr, cmsg) \
(((cmsg) == NULL) ? CMSG_FIRSTHDR(mhdr) : \
(((u_char *)(cmsg) + CMSG_ALIGN((cmsg)->cmsg_len) \
+ CMSG_ALIGN(sizeof(struct cmsghdr)) > \
(u_char *)((mhdr)->msg_control) + (mhdr)->msg_controllen) ? \
(struct cmsghdr *)NULL : \
(struct cmsghdr *)((u_char *)(cmsg) + CMSG_ALIGN((cmsg)->cmsg_len))))
#define CMSG_SPACE(len) (CMSG_ALIGN(sizeof(struct cmsghdr))+CMSG_ALIGN(len))
#endif
/*
* unify WSAGetLastError() with errno.
*
* and convert int <-> SOCKET.
*/
/* int <-> socket */
#define FD2S(fd) ((intptr_t)(fd))
#define S2FD(fd) ((int)(fd))
/* socket <-> HANDLE, plain casts */
#define FD2H(fd) ((HANDLE)FD2S(fd))
#define H2FD(h) S2FD((SOCKET)(h))
static inline int ewrap(int res) {
if (res < 0)
errno = WSAGetLastError();
return res;
}
/* proper signature for setsockopt */
static inline int w_setsockopt(int fd, int level, int optname, const void *optval, int optlen)
{
return ewrap(setsockopt(FD2S(fd), level, optname, optval, optlen));
}
#define setsockopt(a,b,c,d,e) w_setsockopt(a,b,c,d,e)
/* proper signature for send */
static inline ssize_t w_send(int fd, const void *buf, size_t len, int flags) {
return ewrap(send(FD2S(fd), buf, len, flags));
}
#define send(a,b,c,d) w_send(a,b,c,d)
/* proper signature for recv */
static inline ssize_t w_recv(int fd, void *buf, size_t len, int flags) {
return ewrap(recv(FD2S(fd), buf, len, flags));
}
#define recv(a,b,c,d) w_recv(a,b,c,d)
#define getsockopt(a,b,c,d,e) ewrap(getsockopt(FD2S(a),b,c,d,e))
#define connect(a,b,c) ewrap(connect(FD2S(a),b,c))
#define socket(a,b,c) ewrap(S2FD(socket(a,b,c)))
#define bind(a,b,c) ewrap(bind(FD2S(a),b,c))
#define listen(a,b) ewrap(listen(FD2S(a),b))
#define accept(a,b,c) ewrap(accept(FD2S(a),b,c))
#define getpeername(a,b,c) ewrap(getpeername(FD2S(a),b,c))
#define getsockname(a,b,c) ewrap(getsockname(FD2S(a),b,c))
#define select(a,b,c,d,e) ewrap(select(a,b,c,d,e))
static inline struct hostent *w_gethostbyname(const char *n) {
struct hostent *res = gethostbyname(n);
if (!res) errno = WSAGetLastError();
return res;
}
#define gethostbyname(a) w_gethostbyname(a)
/* make unix socket related code compile */
struct sockaddr_un {
short sun_family;
char sun_path[128];
};
/* sendmsg is not used */
static inline int sendmsg(int s, const struct msghdr *m, int flags)
{
if (m->msg_iovlen != 1) {
errno = EINVAL;
return -1;
}
return send(s, m->msg_iov[0].iov_base,
m->msg_iov[0].iov_len, flags);
}
/* recvmsg() is, but only with one iov */
static inline int recvmsg(int s, struct msghdr *m, int flags)
{
if (m->msg_iovlen != 1) {
errno = EINVAL;
return -1;
}
if (m->msg_controllen)
m->msg_controllen = 0;
return recv(s, m->msg_iov[0].iov_base,
m->msg_iov[0].iov_len, flags);
}
/*
* fcntl
*/
#define F_GETFD 1
#define F_SETFD 2
#define F_GETFL 3
#define F_SETFL 4
#define O_NONBLOCK 1
#define FD_CLOEXEC HANDLE_FLAG_INHERIT
static inline int fcntl(int fd, int cmd, long arg)
{
ULONG lval;
DWORD dval;
switch (cmd) {
case F_GETFD:
if (GetHandleInformation(FD2H(fd), &dval))
return dval;
errno = EINVAL;
return -1;
case F_SETFD:
/* set FD_CLOEXEC */
if (SetHandleInformation(FD2H(fd), FD_CLOEXEC, arg))
return 0;
errno = EINVAL;
return -1;
case F_GETFL:
/* O_NONBLOCK? */
return 0;
case F_SETFL:
/* set O_NONBLOCK */
lval = (arg & O_NONBLOCK) ? 1 : 0;
if (ioctlsocket(FD2S(fd), FIONBIO, &lval) == SOCKET_ERROR) {
errno = WSAGetLastError();
return -1;
}
return 0;
default:
errno = EINVAL;
return -1;
}
}
/*
* SIO_KEEPALIVE_VALS for mingw32
*/
#if !defined(SIO_KEEPALIVE_VALS)
#define SIO_KEEPALIVE_VALS _WSAIOW(IOC_VENDOR,4)
struct tcp_keepalive {
u_long onoff;
u_long keepalivetime;
u_long keepaliveinterval;
};
#endif
/*
* Use native poll() if available
*/
#if !defined(HAVE_POLL) && defined(POLLIN)
#define HAVE_POLL
#define poll(a,b,c) usual_poll(a,b,c)
static inline int poll(struct pollfd *fds, int nfds, int timeout)
{
return WSAPoll(fds, nfds, timeout);
}
#endif
#endif
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