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/*
* nixio - Linux I/O library for lua
*
* Copyright (C) 2009 Steven Barth <steven@midlink.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "nixio.h"
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/locking.h>
#include <sys/time.h>
#include <sys/utime.h>
void nixio_open__mingw(lua_State *L) {
_fmode = _O_BINARY;
WSADATA wsa;
if (WSAStartup(MAKEWORD(2, 2), &wsa)) {
luaL_error(L, "Unable to initialize Winsock");
}
lua_newtable(L);
NIXIO_WSA_CONSTANT(WSAEACCES);
NIXIO_WSA_CONSTANT(WSAEINTR);
NIXIO_WSA_CONSTANT(WSAEINVAL);
NIXIO_WSA_CONSTANT(WSAEBADF);
NIXIO_WSA_CONSTANT(WSAEFAULT);
NIXIO_WSA_CONSTANT(WSAEMFILE);
NIXIO_WSA_CONSTANT(WSAENAMETOOLONG);
NIXIO_WSA_CONSTANT(WSAELOOP);
NIXIO_WSA_CONSTANT(WSAEAFNOSUPPORT);
NIXIO_WSA_CONSTANT(WSAENOBUFS);
NIXIO_WSA_CONSTANT(WSAEPROTONOSUPPORT);
NIXIO_WSA_CONSTANT(WSAENOPROTOOPT);
NIXIO_WSA_CONSTANT(WSAEADDRINUSE);
NIXIO_WSA_CONSTANT(WSAENETDOWN);
NIXIO_WSA_CONSTANT(WSAENETUNREACH);
NIXIO_WSA_CONSTANT(WSAECONNABORTED);
NIXIO_WSA_CONSTANT(WSAECONNRESET);
lua_setfield(L, -2, "const_sock");
}
const char* nixio__mgw_inet_ntop
(int af, const void *src, char *dst, socklen_t size) {
struct sockaddr_storage saddr;
memset(&saddr, 0, sizeof(saddr));
DWORD hostlen = size, sl;
if (af == AF_INET) {
struct sockaddr_in *saddr4 = (struct sockaddr_in *)&saddr;
memcpy(&saddr4->sin_addr, src, sizeof(saddr4->sin_addr));
saddr4->sin_family = AF_INET;
saddr4->sin_port = 0;
sl = sizeof(struct sockaddr_in);
} else if (af == AF_INET6) {
struct sockaddr_in6 *saddr6 = (struct sockaddr_in6 *)&saddr;
memcpy(&saddr6->sin6_addr, src, sizeof(saddr6->sin6_addr));
saddr6->sin6_family = AF_INET6;
saddr6->sin6_port = 0;
sl = sizeof(struct sockaddr_in6);
} else {
return NULL;
}
if (WSAAddressToString((struct sockaddr*)&saddr, sl, NULL, dst, &hostlen)) {
return NULL;
}
return dst;
}
int nixio__mgw_inet_pton (int af, const char *src, void *dst) {
struct sockaddr_storage sa;
int sl = sizeof(sa);
if (!WSAStringToAddress((char*)src, af, NULL, (struct sockaddr*)&sa, &sl)) {
if (af == AF_INET) {
struct in_addr ina = ((struct sockaddr_in *)&sa)->sin_addr;
memcpy(dst, &ina, sizeof(ina));
return 1;
} else if (af == AF_INET6) {
struct in_addr6 ina6 = ((struct sockaddr_in6 *)&sa)->sin6_addr;
memcpy(dst, &ina6, sizeof(ina6));
return 1;
} else {
WSASetLastError(WSAEAFNOSUPPORT);
return -1;
}
} else {
return -1;
}
}
int nixio__mgw_nanosleep(const struct timespec *req, struct timespec *rem) {
if (rem) {
rem->tv_sec = 0;
rem->tv_nsec = 0;
}
Sleep(req->tv_sec * 1000 + req->tv_nsec * 1000000);
return 0;
}
int nixio__mgw_poll(struct pollfd *fds, int nfds, int timeout) {
if (!fds || !nfds) {
Sleep(timeout);
return 0;
}
struct timeval tv;
int high = 0, rf = 0, wf = 0, ef = 0;
fd_set rfds, wfds, efds;
FD_ZERO(&rfds);
FD_ZERO(&wfds);
FD_ZERO(&efds);
tv.tv_sec = timeout / 1000;
tv.tv_usec = (timeout % 1000) * 1000;
for (int i = 0; i < nfds; i++) {
if (fds->events & POLLIN) {
FD_SET(fds->fd, &rfds);
rf++;
}
if (fds->events & POLLOUT) {
FD_SET(fds->fd, &wfds);
wf++;
}
if (fds->events & POLLERR) {
FD_SET(fds->fd, &efds);
ef++;
}
if (fds->fd > high) {
high = fds->fd;
}
}
int stat = select(high + 1, (rf) ? &rfds : NULL,
(wf) ? &wfds : NULL, (ef) ? &efds : NULL, &tv);
if (stat < 1) {
errno = WSAGetLastError();
return stat;
}
high = 0;
for (int i = 0; i < nfds; i++) {
fds->revents = 0;
if ((fds->events & POLLIN) && FD_ISSET(fds->fd, &rfds)) {
fds->revents |= POLLIN;
}
if ((fds->events & POLLOUT) && FD_ISSET(fds->fd, &wfds)) {
fds->revents |= POLLOUT;
}
if ((fds->events & POLLERR) && FD_ISSET(fds->fd, &efds)) {
fds->revents |= POLLERR;
}
if (fds->revents) {
high++;
}
}
return high;
}
int nixio__mgw_lockf(int fd, int cmd, off_t len) {
int stat;
if (cmd == F_LOCK) {
do {
stat = _locking(fd, _LK_LOCK, len);
} while (stat == -1 && errno == EDEADLOCK);
} else if (cmd == F_TLOCK) {
stat = _locking(fd, _LK_NBLCK, len);
} else if (cmd == F_ULOCK) {
stat = _locking(fd, _LK_UNLCK, len);
} else {
stat = -1;
errno = EINVAL;
}
return stat;
}
char* nixio__mgw_realpath(const char *path, char *resolved) {
if (GetFullPathName(path, PATH_MAX, resolved, NULL)) {
return resolved;
} else {
errno = GetLastError();
return NULL;
}
}
int nixio__mgw_link(const char *oldpath, const char *newpath) {
if (!CreateHardLink(newpath, oldpath, NULL)) {
errno = GetLastError();
return -1;
} else {
return 0;
}
}
int nixio__mgw_utimes(const char *filename, const struct timeval times[2]) {
struct _utimbuf timebuffer;
timebuffer.actime = times[0].tv_sec;
timebuffer.modtime = times[1].tv_sec;
return _utime(filename, &timebuffer);
}
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