virtualx-engine/thirdparty/libwebsockets/plat/lws-plat-win.c
2018-11-03 17:45:33 +01:00

847 lines
18 KiB
C

#ifndef _WINSOCK_DEPRECATED_NO_WARNINGS
#define _WINSOCK_DEPRECATED_NO_WARNINGS
#endif
#include "core/private.h"
void lws_plat_apply_FD_CLOEXEC(int n)
{
}
int
lws_plat_socket_offset(void)
{
return 0;
}
int
lws_plat_pipe_create(struct lws *wsi)
{
return 1;
}
int
lws_plat_pipe_signal(struct lws *wsi)
{
struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi];
WSASetEvent(pt->events[0]); /* trigger the cancel event */
return 0;
}
void
lws_plat_pipe_close(struct lws *wsi)
{
}
unsigned long long
time_in_microseconds()
{
#ifndef DELTA_EPOCH_IN_MICROSECS
#define DELTA_EPOCH_IN_MICROSECS 11644473600000000ULL
#endif
FILETIME filetime;
ULARGE_INTEGER datetime;
#ifdef _WIN32_WCE
GetCurrentFT(&filetime);
#else
GetSystemTimeAsFileTime(&filetime);
#endif
/*
* As per Windows documentation for FILETIME, copy the resulting
* FILETIME structure to a ULARGE_INTEGER structure using memcpy
* (using memcpy instead of direct assignment can prevent alignment
* faults on 64-bit Windows).
*/
memcpy(&datetime, &filetime, sizeof(datetime));
/* Windows file times are in 100s of nanoseconds. */
return (datetime.QuadPart / 10) - DELTA_EPOCH_IN_MICROSECS;
}
#ifdef _WIN32_WCE
time_t time(time_t *t)
{
time_t ret = time_in_microseconds() / 1000000;
if(t != NULL)
*t = ret;
return ret;
}
#endif
/* file descriptor hash management */
struct lws *
wsi_from_fd(const struct lws_context *context, lws_sockfd_type fd)
{
int h = LWS_FD_HASH(fd);
int n = 0;
for (n = 0; n < context->fd_hashtable[h].length; n++)
if (context->fd_hashtable[h].wsi[n]->desc.sockfd == fd)
return context->fd_hashtable[h].wsi[n];
return NULL;
}
int
insert_wsi(struct lws_context *context, struct lws *wsi)
{
int h = LWS_FD_HASH(wsi->desc.sockfd);
if (context->fd_hashtable[h].length == (getdtablesize() - 1)) {
lwsl_err("hash table overflow\n");
return 1;
}
context->fd_hashtable[h].wsi[context->fd_hashtable[h].length++] = wsi;
return 0;
}
int
delete_from_fd(struct lws_context *context, lws_sockfd_type fd)
{
int h = LWS_FD_HASH(fd);
int n = 0;
for (n = 0; n < context->fd_hashtable[h].length; n++)
if (context->fd_hashtable[h].wsi[n]->desc.sockfd == fd) {
while (n < context->fd_hashtable[h].length) {
context->fd_hashtable[h].wsi[n] =
context->fd_hashtable[h].wsi[n + 1];
n++;
}
context->fd_hashtable[h].length--;
return 0;
}
lwsl_err("Failed to find fd %d requested for "
"delete in hashtable\n", fd);
return 1;
}
LWS_VISIBLE int
lws_get_random(struct lws_context *context, void *buf, int len)
{
int n;
char *p = (char *)buf;
for (n = 0; n < len; n++)
p[n] = (unsigned char)rand();
return n;
}
LWS_VISIBLE int
lws_send_pipe_choked(struct lws *wsi)
{ struct lws *wsi_eff = wsi;
#if defined(LWS_WITH_HTTP2)
wsi_eff = lws_get_network_wsi(wsi);
#endif
/* the fact we checked implies we avoided back-to-back writes */
wsi_eff->could_have_pending = 0;
/* treat the fact we got a truncated send pending as if we're choked */
if (wsi_eff->trunc_len)
return 1;
return (int)wsi_eff->sock_send_blocking;
}
LWS_VISIBLE int
lws_poll_listen_fd(struct lws_pollfd *fd)
{
fd_set readfds;
struct timeval tv = { 0, 0 };
assert((fd->events & LWS_POLLIN) == LWS_POLLIN);
FD_ZERO(&readfds);
FD_SET(fd->fd, &readfds);
return select(((int)fd->fd) + 1, &readfds, NULL, NULL, &tv);
}
LWS_VISIBLE void
lwsl_emit_syslog(int level, const char *line)
{
lwsl_emit_stderr(level, line);
}
LWS_VISIBLE LWS_EXTERN int
_lws_plat_service_tsi(struct lws_context *context, int timeout_ms, int tsi)
{
struct lws_context_per_thread *pt;
WSANETWORKEVENTS networkevents;
struct lws_pollfd *pfd;
struct lws *wsi;
unsigned int i;
DWORD ev;
int n, m;
/* stay dead once we are dead */
if (context == NULL || !context->vhost_list)
return 1;
pt = &context->pt[tsi];
if (!context->service_tid_detected) {
struct lws _lws;
memset(&_lws, 0, sizeof(_lws));
_lws.context = context;
context->service_tid_detected = context->vhost_list->
protocols[0].callback(&_lws, LWS_CALLBACK_GET_THREAD_ID,
NULL, NULL, 0);
context->service_tid = context->service_tid_detected;
context->service_tid_detected = 1;
}
if (timeout_ms < 0) {
if (lws_service_flag_pending(context, tsi)) {
/* any socket with events to service? */
for (n = 0; n < (int)pt->fds_count; n++) {
if (!pt->fds[n].revents)
continue;
m = lws_service_fd_tsi(context, &pt->fds[n], tsi);
if (m < 0)
return -1;
/* if something closed, retry this slot */
if (m)
n--;
}
}
return 0;
}
if (context->event_loop_ops->run_pt)
context->event_loop_ops->run_pt(context, tsi);
for (i = 0; i < pt->fds_count; ++i) {
pfd = &pt->fds[i];
if (!(pfd->events & LWS_POLLOUT))
continue;
wsi = wsi_from_fd(context, pfd->fd);
if (!wsi || wsi->listener)
continue;
if (wsi->sock_send_blocking)
continue;
pfd->revents = LWS_POLLOUT;
n = lws_service_fd(context, pfd);
if (n < 0)
return -1;
/* Force WSAWaitForMultipleEvents() to check events and then return immediately. */
timeout_ms = 0;
/* if something closed, retry this slot */
if (n)
i--;
}
/*
* is there anybody with pending stuff that needs service forcing?
*/
if (!lws_service_adjust_timeout(context, 1, tsi)) {
/* -1 timeout means just do forced service */
_lws_plat_service_tsi(context, -1, pt->tid);
/* still somebody left who wants forced service? */
if (!lws_service_adjust_timeout(context, 1, pt->tid))
/* yes... come back again quickly */
timeout_ms = 0;
}
if (timeout_ms) {
lws_usec_t t;
lws_pt_lock(pt, __func__);
/* don't stay in poll wait longer than next hr timeout */
t = __lws_hrtimer_service(pt);
if ((lws_usec_t)timeout_ms * 1000 > t)
timeout_ms = (int)(t / 1000);
lws_pt_unlock(pt);
}
ev = WSAWaitForMultipleEvents(1, pt->events, FALSE, timeout_ms, FALSE);
if (ev == WSA_WAIT_EVENT_0) {
unsigned int eIdx, err;
WSAResetEvent(pt->events[0]);
if (pt->context->tls_ops &&
pt->context->tls_ops->fake_POLLIN_for_buffered)
pt->context->tls_ops->fake_POLLIN_for_buffered(pt);
for (eIdx = 0; eIdx < pt->fds_count; ++eIdx) {
if (WSAEnumNetworkEvents(pt->fds[eIdx].fd, 0,
&networkevents) == SOCKET_ERROR) {
lwsl_err("WSAEnumNetworkEvents() failed "
"with error %d\n", LWS_ERRNO);
return -1;
}
pfd = &pt->fds[eIdx];
pfd->revents = (short)networkevents.lNetworkEvents;
err = networkevents.iErrorCode[FD_CONNECT_BIT];
if ((networkevents.lNetworkEvents & FD_CONNECT) &&
err && err != LWS_EALREADY &&
err != LWS_EINPROGRESS && err != LWS_EWOULDBLOCK &&
err != WSAEINVAL) {
lwsl_debug("Unable to connect errno=%d\n", err);
pfd->revents |= LWS_POLLHUP;
}
if (pfd->revents & LWS_POLLOUT) {
wsi = wsi_from_fd(context, pfd->fd);
if (wsi)
wsi->sock_send_blocking = 0;
}
/* if something closed, retry this slot */
if (pfd->revents & LWS_POLLHUP)
--eIdx;
if (pfd->revents) {
recv(pfd->fd, NULL, 0, 0);
lws_service_fd_tsi(context, pfd, tsi);
}
}
}
context->service_tid = 0;
if (ev == WSA_WAIT_TIMEOUT)
lws_service_fd(context, NULL);
return 0;
}
LWS_VISIBLE int
lws_plat_service(struct lws_context *context, int timeout_ms)
{
return _lws_plat_service_tsi(context, timeout_ms, 0);
}
LWS_VISIBLE int
lws_plat_set_socket_options(struct lws_vhost *vhost, lws_sockfd_type fd)
{
int optval = 1;
int optlen = sizeof(optval);
u_long optl = 1;
DWORD dwBytesRet;
struct tcp_keepalive alive;
int protonbr;
#ifndef _WIN32_WCE
struct protoent *tcp_proto;
#endif
if (vhost->ka_time) {
/* enable keepalive on this socket */
optval = 1;
if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE,
(const char *)&optval, optlen) < 0)
return 1;
alive.onoff = TRUE;
alive.keepalivetime = vhost->ka_time;
alive.keepaliveinterval = vhost->ka_interval;
if (WSAIoctl(fd, SIO_KEEPALIVE_VALS, &alive, sizeof(alive),
NULL, 0, &dwBytesRet, NULL, NULL))
return 1;
}
/* Disable Nagle */
optval = 1;
#ifndef _WIN32_WCE
tcp_proto = getprotobyname("TCP");
if (!tcp_proto) {
lwsl_err("getprotobyname() failed with error %d\n", LWS_ERRNO);
return 1;
}
protonbr = tcp_proto->p_proto;
#else
protonbr = 6;
#endif
setsockopt(fd, protonbr, TCP_NODELAY, (const char *)&optval, optlen);
/* We are nonblocking... */
ioctlsocket(fd, FIONBIO, &optl);
return 0;
}
LWS_VISIBLE void
lws_plat_drop_app_privileges(const struct lws_context_creation_info *info)
{
}
LWS_VISIBLE int
lws_plat_context_early_init(void)
{
WORD wVersionRequested;
WSADATA wsaData;
int err;
/* Use the MAKEWORD(lowbyte, highbyte) macro from Windef.h */
wVersionRequested = MAKEWORD(2, 2);
err = WSAStartup(wVersionRequested, &wsaData);
if (!err)
return 0;
/*
* Tell the user that we could not find a usable
* Winsock DLL
*/
lwsl_err("WSAStartup failed with error: %d\n", err);
return 1;
}
LWS_VISIBLE void
lws_plat_context_early_destroy(struct lws_context *context)
{
struct lws_context_per_thread *pt = &context->pt[0];
int n = context->count_threads;
while (n--) {
if (pt->events) {
WSACloseEvent(pt->events[0]);
lws_free(pt->events);
}
pt++;
}
}
LWS_VISIBLE void
lws_plat_context_late_destroy(struct lws_context *context)
{
int n;
for (n = 0; n < FD_HASHTABLE_MODULUS; n++) {
if (context->fd_hashtable[n].wsi)
lws_free(context->fd_hashtable[n].wsi);
}
WSACleanup();
}
LWS_VISIBLE LWS_EXTERN int
lws_interface_to_sa(int ipv6,
const char *ifname, struct sockaddr_in *addr, size_t addrlen)
{
#ifdef LWS_WITH_IPV6
struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)addr;
if (ipv6) {
if (lws_plat_inet_pton(AF_INET6, ifname, &addr6->sin6_addr) == 1) {
return LWS_ITOSA_USABLE;
}
}
#endif
long long address = inet_addr(ifname);
if (address == INADDR_NONE) {
struct hostent *entry = gethostbyname(ifname);
if (entry)
address = ((struct in_addr *)entry->h_addr_list[0])->s_addr;
}
if (address == INADDR_NONE)
return LWS_ITOSA_NOT_EXIST;
addr->sin_addr.s_addr = (unsigned long)(lws_intptr_t)address;
return LWS_ITOSA_USABLE;
}
LWS_VISIBLE void
lws_plat_insert_socket_into_fds(struct lws_context *context, struct lws *wsi)
{
struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi];
pt->fds[pt->fds_count++].revents = 0;
pt->events[pt->fds_count] = pt->events[0];
WSAEventSelect(wsi->desc.sockfd, pt->events[0],
LWS_POLLIN | LWS_POLLHUP | FD_CONNECT);
}
LWS_VISIBLE void
lws_plat_delete_socket_from_fds(struct lws_context *context,
struct lws *wsi, int m)
{
struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi];
pt->events[m + 1] = pt->events[pt->fds_count--];
}
LWS_VISIBLE void
lws_plat_service_periodic(struct lws_context *context)
{
}
LWS_VISIBLE int
lws_plat_check_connection_error(struct lws *wsi)
{
int optVal;
int optLen = sizeof(int);
if (getsockopt(wsi->desc.sockfd, SOL_SOCKET, SO_ERROR,
(char*)&optVal, &optLen) != SOCKET_ERROR && optVal &&
optVal != LWS_EALREADY && optVal != LWS_EINPROGRESS &&
optVal != LWS_EWOULDBLOCK && optVal != WSAEINVAL) {
lwsl_debug("Connect failed SO_ERROR=%d\n", optVal);
return 1;
}
return 0;
}
LWS_VISIBLE int
lws_plat_change_pollfd(struct lws_context *context,
struct lws *wsi, struct lws_pollfd *pfd)
{
struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi];
long networkevents = LWS_POLLHUP | FD_CONNECT;
if ((pfd->events & LWS_POLLIN))
networkevents |= LWS_POLLIN;
if ((pfd->events & LWS_POLLOUT))
networkevents |= LWS_POLLOUT;
if (WSAEventSelect(wsi->desc.sockfd,
pt->events[0],
networkevents) != SOCKET_ERROR)
return 0;
lwsl_err("WSAEventSelect() failed with error %d\n", LWS_ERRNO);
return 1;
}
LWS_VISIBLE const char *
lws_plat_inet_ntop(int af, const void *src, char *dst, int cnt)
{
WCHAR *buffer;
DWORD bufferlen = cnt;
BOOL ok = FALSE;
buffer = lws_malloc(bufferlen * 2, "inet_ntop");
if (!buffer) {
lwsl_err("Out of memory\n");
return NULL;
}
if (af == AF_INET) {
struct sockaddr_in srcaddr;
bzero(&srcaddr, sizeof(srcaddr));
srcaddr.sin_family = AF_INET;
memcpy(&(srcaddr.sin_addr), src, sizeof(srcaddr.sin_addr));
if (!WSAAddressToStringW((struct sockaddr*)&srcaddr, sizeof(srcaddr), 0, buffer, &bufferlen))
ok = TRUE;
#ifdef LWS_WITH_IPV6
} else if (af == AF_INET6) {
struct sockaddr_in6 srcaddr;
bzero(&srcaddr, sizeof(srcaddr));
srcaddr.sin6_family = AF_INET6;
memcpy(&(srcaddr.sin6_addr), src, sizeof(srcaddr.sin6_addr));
if (!WSAAddressToStringW((struct sockaddr*)&srcaddr, sizeof(srcaddr), 0, buffer, &bufferlen))
ok = TRUE;
#endif
} else
lwsl_err("Unsupported type\n");
if (!ok) {
int rv = WSAGetLastError();
lwsl_err("WSAAddressToString() : %d\n", rv);
} else {
if (WideCharToMultiByte(CP_ACP, 0, buffer, bufferlen, dst, cnt, 0, NULL) <= 0)
ok = FALSE;
}
lws_free(buffer);
return ok ? dst : NULL;
}
LWS_VISIBLE int
lws_plat_inet_pton(int af, const char *src, void *dst)
{
WCHAR *buffer;
DWORD bufferlen = (int)strlen(src) + 1;
BOOL ok = FALSE;
buffer = lws_malloc(bufferlen * 2, "inet_pton");
if (!buffer) {
lwsl_err("Out of memory\n");
return -1;
}
if (MultiByteToWideChar(CP_ACP, 0, src, bufferlen, buffer, bufferlen) <= 0) {
lwsl_err("Failed to convert multi byte to wide char\n");
lws_free(buffer);
return -1;
}
if (af == AF_INET) {
struct sockaddr_in dstaddr;
int dstaddrlen = sizeof(dstaddr);
bzero(&dstaddr, sizeof(dstaddr));
dstaddr.sin_family = AF_INET;
if (!WSAStringToAddressW(buffer, af, 0, (struct sockaddr *) &dstaddr, &dstaddrlen)) {
ok = TRUE;
memcpy(dst, &dstaddr.sin_addr, sizeof(dstaddr.sin_addr));
}
#ifdef LWS_WITH_IPV6
} else if (af == AF_INET6) {
struct sockaddr_in6 dstaddr;
int dstaddrlen = sizeof(dstaddr);
bzero(&dstaddr, sizeof(dstaddr));
dstaddr.sin6_family = AF_INET6;
if (!WSAStringToAddressW(buffer, af, 0, (struct sockaddr *) &dstaddr, &dstaddrlen)) {
ok = TRUE;
memcpy(dst, &dstaddr.sin6_addr, sizeof(dstaddr.sin6_addr));
}
#endif
} else
lwsl_err("Unsupported type\n");
if (!ok) {
int rv = WSAGetLastError();
lwsl_err("WSAAddressToString() : %d\n", rv);
}
lws_free(buffer);
return ok ? 1 : -1;
}
LWS_VISIBLE lws_fop_fd_t
_lws_plat_file_open(const struct lws_plat_file_ops *fops, const char *filename,
const char *vpath, lws_fop_flags_t *flags)
{
HANDLE ret;
WCHAR buf[MAX_PATH];
lws_fop_fd_t fop_fd;
FILE_STANDARD_INFO fInfo = {0};
MultiByteToWideChar(CP_UTF8, 0, filename, -1, buf, LWS_ARRAY_SIZE(buf));
#if defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0602 // Windows 8 (minimum when UWP_ENABLED, but can be used in Windows builds)
CREATEFILE2_EXTENDED_PARAMETERS extParams = {0};
extParams.dwFileAttributes = FILE_ATTRIBUTE_NORMAL;
if (((*flags) & 7) == _O_RDONLY) {
ret = CreateFile2(buf, GENERIC_READ, FILE_SHARE_READ, OPEN_EXISTING, &extParams);
} else {
ret = CreateFile2(buf, GENERIC_WRITE, 0, CREATE_ALWAYS, &extParams);
}
#else
if (((*flags) & 7) == _O_RDONLY) {
ret = CreateFileW(buf, GENERIC_READ, FILE_SHARE_READ,
NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
} else {
ret = CreateFileW(buf, GENERIC_WRITE, 0, NULL,
CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
}
#endif
if (ret == LWS_INVALID_FILE)
goto bail;
fop_fd = malloc(sizeof(*fop_fd));
if (!fop_fd)
goto bail;
fop_fd->fops = fops;
fop_fd->fd = ret;
fop_fd->filesystem_priv = NULL; /* we don't use it */
fop_fd->flags = *flags;
fop_fd->len = 0;
if(GetFileInformationByHandleEx(ret, FileStandardInfo, &fInfo, sizeof(fInfo)))
fop_fd->len = fInfo.EndOfFile.QuadPart;
fop_fd->pos = 0;
return fop_fd;
bail:
return NULL;
}
LWS_VISIBLE int
_lws_plat_file_close(lws_fop_fd_t *fop_fd)
{
HANDLE fd = (*fop_fd)->fd;
free(*fop_fd);
*fop_fd = NULL;
CloseHandle((HANDLE)fd);
return 0;
}
LWS_VISIBLE lws_fileofs_t
_lws_plat_file_seek_cur(lws_fop_fd_t fop_fd, lws_fileofs_t offset)
{
LARGE_INTEGER l;
l.QuadPart = offset;
return SetFilePointerEx((HANDLE)fop_fd->fd, l, NULL, FILE_CURRENT);
}
LWS_VISIBLE int
_lws_plat_file_read(lws_fop_fd_t fop_fd, lws_filepos_t *amount,
uint8_t *buf, lws_filepos_t len)
{
DWORD _amount;
if (!ReadFile((HANDLE)fop_fd->fd, buf, (DWORD)len, &_amount, NULL)) {
*amount = 0;
return 1;
}
fop_fd->pos += _amount;
*amount = (unsigned long)_amount;
return 0;
}
LWS_VISIBLE int
_lws_plat_file_write(lws_fop_fd_t fop_fd, lws_filepos_t *amount,
uint8_t* buf, lws_filepos_t len)
{
DWORD _amount;
if (!WriteFile((HANDLE)fop_fd->fd, buf, (DWORD)len, &_amount, NULL)) {
*amount = 0;
return 1;
}
fop_fd->pos += _amount;
*amount = (unsigned long)_amount;
return 0;
}
LWS_VISIBLE int
lws_plat_init(struct lws_context *context,
const struct lws_context_creation_info *info)
{
struct lws_context_per_thread *pt = &context->pt[0];
int i, n = context->count_threads;
for (i = 0; i < FD_HASHTABLE_MODULUS; i++) {
context->fd_hashtable[i].wsi =
lws_zalloc(sizeof(struct lws*) * context->max_fds, "win hashtable");
if (!context->fd_hashtable[i].wsi)
return -1;
}
while (n--) {
pt->events = lws_malloc(sizeof(WSAEVENT) *
(context->fd_limit_per_thread + 1), "event table");
if (pt->events == NULL) {
lwsl_err("Unable to allocate events array for %d connections\n",
context->fd_limit_per_thread + 1);
return 1;
}
pt->fds_count = 0;
pt->events[0] = WSACreateEvent(); /* the cancel event */
pt++;
}
context->fd_random = 0;
#ifdef LWS_WITH_PLUGINS
if (info->plugin_dirs)
lws_plat_plugins_init(context, info->plugin_dirs);
#endif
return 0;
}
int kill(int pid, int sig)
{
lwsl_err("Sorry Windows doesn't support kill().");
exit(0);
}
int fork(void)
{
lwsl_err("Sorry Windows doesn't support fork().");
exit(0);
}
LWS_VISIBLE int
lws_plat_write_cert(struct lws_vhost *vhost, int is_key, int fd, void *buf,
int len)
{
int n;
n = write(fd, buf, len);
lseek(fd, 0, SEEK_SET);
return n != len;
}
LWS_VISIBLE int
lws_plat_write_file(const char *filename, void *buf, int len)
{
int m, fd;
fd = lws_open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0600);
if (fd == -1)
return -1;
m = write(fd, buf, len);
close(fd);
return m != len;
}
LWS_VISIBLE int
lws_plat_read_file(const char *filename, void *buf, int len)
{
int n, fd = lws_open(filename, O_RDONLY);
if (fd == -1)
return -1;
n = read(fd, buf, len);
close(fd);
return n;
}
LWS_VISIBLE int
lws_plat_recommended_rsa_bits(void)
{
return 4096;
}