static void
rb_read_timerfd(rb_fde_t *F, void *data)
{
struct ev_entry *event = (struct ev_entry *)data;
int retlen;
uint64_t count;
if(event == NULL)
{
rb_close(F);
return;
}
retlen = rb_read(F, &count, sizeof(count));
if(retlen == 0 || (retlen < 0 && !rb_ignore_errno(errno)))
{
rb_close(F);
rb_lib_log("rb_read_timerfd: timerfd[%s] closed on error: %s", event->name,
strerror(errno));
return;
}
rb_setselect(F, RB_SELECT_READ, rb_read_timerfd, event);
rb_run_event(event);
}
static ssize_t
rb_ssl_read_or_write(int r_or_w, rb_fde_t *F, void *rbuf, const void *wbuf, size_t count)
{
ssize_t ret;
gnutls_session_t *ssl = F->ssl;
if (r_or_w == 0)
ret = gnutls_record_recv(*ssl, rbuf, count);
else
ret = gnutls_record_send(*ssl, wbuf, count);
if (ret < 0)
{
switch (ret)
{
case GNUTLS_E_AGAIN:
case GNUTLS_E_INTERRUPTED:
if (rb_ignore_errno(errno))
{
if (gnutls_record_get_direction(*ssl) == 0)
return RB_RW_SSL_NEED_READ;
else
return RB_RW_SSL_NEED_WRITE;
break;
}
default:
F->ssl_errno = ret;
errno = EIO;
return RB_RW_IO_ERROR;
}
}
return ret;
}
static int
do_ssl_handshake(rb_fde_t *F, PF * callback, void *data)
{
int ret;
int flags;
ret = mbedtls_ssl_handshake(SSL_P(F));
if(ret < 0)
{
if (ret == -1 && rb_ignore_errno(errno))
ret = MBEDTLS_ERR_SSL_WANT_READ;
if((ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE))
{
if(ret == MBEDTLS_ERR_SSL_WANT_READ)
flags = RB_SELECT_READ;
else
flags = RB_SELECT_WRITE;
rb_setselect(F, flags, callback, data);
return 0;
}
F->sslerr.ssl_errno = ret;
return -1;
}
return 1; /* handshake is finished..go about life */
}
static void
rb_ssl_accept_common(rb_fde_t *new_F)
{
int ssl_err;
if((ssl_err = SSL_accept((SSL *) new_F->ssl)) <= 0)
{
switch (ssl_err = SSL_get_error((SSL *) new_F->ssl, ssl_err))
{
case SSL_ERROR_SYSCALL:
if(rb_ignore_errno(errno))
case SSL_ERROR_WANT_READ:
case SSL_ERROR_WANT_WRITE:
{
new_F->ssl_errno = get_last_err();
rb_setselect(new_F, RB_SELECT_READ | RB_SELECT_WRITE,
rb_ssl_tryaccept, NULL);
return;
}
default:
new_F->ssl_errno = get_last_err();
new_F->accept->callback(new_F, RB_ERROR_SSL, NULL, 0, new_F->accept->data);
return;
}
}
else
{
rb_ssl_tryaccept(new_F, NULL);
}
}
static void
rb_ssl_tryconn(rb_fde_t *F, int status, void *data)
{
struct ssl_connect *sconn = data;
int ssl_err;
if(status != RB_OK) {
rb_ssl_connect_realcb(F, status, sconn);
return;
}
F->type |= RB_FD_SSL;
F->ssl = SSL_new(ssl_client_ctx);
SSL_set_fd((SSL *) F->ssl, F->fd);
rb_setup_ssl_cb(F);
rb_settimeout(F, sconn->timeout, rb_ssl_tryconn_timeout_cb, sconn);
if((ssl_err = SSL_connect((SSL *) F->ssl)) <= 0) {
switch (ssl_err = SSL_get_error((SSL *) F->ssl, ssl_err)) {
case SSL_ERROR_SYSCALL:
if(rb_ignore_errno(errno))
case SSL_ERROR_WANT_READ:
case SSL_ERROR_WANT_WRITE: {
F->ssl_errno = get_last_err();
rb_setselect(F, RB_SELECT_READ | RB_SELECT_WRITE,
rb_ssl_tryconn_cb, sconn);
return;
}
default:
F->ssl_errno = get_last_err();
rb_ssl_connect_realcb(F, RB_ERROR_SSL, sconn);
return;
}
} else {
rb_ssl_connect_realcb(F, RB_OK, sconn);
}
}
static void
rb_ssl_tryconn_cb(rb_fde_t *F, void *data)
{
struct ssl_connect *sconn = data;
int ssl_err;
if(!SSL_is_init_finished((SSL *) F->ssl))
{
if((ssl_err = SSL_connect((SSL *) F->ssl)) <= 0)
{
switch (ssl_err = SSL_get_error((SSL *) F->ssl, ssl_err))
{
case SSL_ERROR_SYSCALL:
if(rb_ignore_errno(errno))
case SSL_ERROR_WANT_READ:
case SSL_ERROR_WANT_WRITE:
{
F->ssl_errno = get_last_err();
rb_setselect(F, RB_SELECT_READ | RB_SELECT_WRITE,
rb_ssl_tryconn_cb, sconn);
return;
}
default:
F->ssl_errno = get_last_err();
rb_ssl_connect_realcb(F, RB_ERROR_SSL, sconn);
return;
}
}
else
{
rb_ssl_connect_realcb(F, RB_OK, sconn);
}
}
}
void
rb_ssl_start_connected(rb_fde_t *F, CNCB * callback, void *data, int timeout)
{
ssl_connect_t *sconn;
int ssl_err;
if(F == NULL)
return;
sconn = rb_malloc(sizeof(ssl_connect_t));
sconn->data = data;
sconn->callback = callback;
sconn->timeout = timeout;
F->connect = rb_malloc(sizeof(struct conndata));
F->connect->callback = callback;
F->connect->data = data;
F->type |= RB_FD_SSL;
F->ssl = SSL_new(F->sctx->ssl_ctx);
if(F->ssl == NULL)
{
F->sslerr.ssl_errno = get_last_err();
rb_lib_log("rb_ssl_start_Connected: SSL_new() fails: %s", ERR_error_string(F->sslerr.ssl_errno, NULL));
rb_ssl_connect_realcb(F, RB_ERROR_SSL, sconn);
return;
}
SSL_set_fd((SSL *) F->ssl, F->fd);
rb_setup_ssl_cb(F);
rb_settimeout(F, sconn->timeout, rb_ssl_tryconn_timeout_cb, sconn);
if((ssl_err = SSL_connect((SSL *) F->ssl)) <= 0)
{
switch (ssl_err = SSL_get_error((SSL *) F->ssl, ssl_err))
{
case SSL_ERROR_SYSCALL:
if(rb_ignore_errno(errno))
case SSL_ERROR_WANT_READ:
case SSL_ERROR_WANT_WRITE:
{
F->sslerr.ssl_errno = get_last_err();
rb_setselect(F, RB_SELECT_READ | RB_SELECT_WRITE,
rb_ssl_tryconn_cb, sconn);
return;
}
default:
F->sslerr.ssl_errno = get_last_err();
rb_ssl_connect_realcb(F, RB_ERROR_SSL, sconn);
return;
}
}
else
{
rb_ssl_connect_realcb(F, RB_OK, sconn);
}
}
int
rb_select_select(long delay)
{
int num;
int fd;
PF *hdl;
rb_fde_t *F;
struct timeval to;
/* Copy over the read/write sets so we don't have to rebuild em */
memcpy(&tmpreadfds, &select_readfds, sizeof(fd_set));
memcpy(&tmpwritefds, &select_writefds, sizeof(fd_set));
for (;;) {
to.tv_sec = 0;
to.tv_usec = delay * 1000;
num = select(rb_maxfd + 1, &tmpreadfds, &tmpwritefds, NULL, &to);
if (num >= 0)
break;
if (rb_ignore_errno(errno))
continue;
rb_set_time();
/* error! */
return -1;
/* NOTREACHED */
}
rb_set_time();
if (num == 0)
return 0;
/* XXX we *could* optimise by falling out after doing num fds ... */
for (fd = 0; fd < rb_maxfd + 1; fd++) {
F = rb_find_fd(fd);
if (F == NULL)
continue;
if (FD_ISSET(fd, &tmpreadfds)) {
hdl = F->read_handler;
F->read_handler = NULL;
if (hdl)
hdl(F, F->read_data);
}
if (!IsFDOpen(F))
continue; /* Read handler closed us..go on */
if (FD_ISSET(fd, &tmpwritefds)) {
hdl = F->write_handler;
F->write_handler = NULL;
if (hdl)
hdl(F, F->write_data);
}
if (F->read_handler == NULL)
select_update_selectfds(F, RB_SELECT_READ, NULL);
if (F->write_handler == NULL)
select_update_selectfds(F, RB_SELECT_WRITE, NULL);
}
return 0;
}
static int
rb_ssl_read_cb(void *opaque, unsigned char *buf, size_t size)
{
int ret;
rb_fde_t *F = opaque;
ret = read(F->fd, buf, size);
if (ret < 0 && rb_ignore_errno(errno))
return MBEDTLS_ERR_SSL_WANT_READ;
return ret;
}
static int
rb_ssl_write_cb(void *opaque, const unsigned char *buf, size_t size)
{
rb_fde_t *F = opaque;
int ret;
ret = write(F->fd, buf, size);
if (ret < 0 && rb_ignore_errno(errno))
return MBEDTLS_ERR_SSL_WANT_WRITE;
return ret;
}
static void
signalfd_handler(rb_fde_t *F, void *data)
{
static struct our_signalfd_siginfo fdsig[SIGFDIOV_COUNT];
static struct iovec iov[SIGFDIOV_COUNT];
struct ev_entry *ev;
int ret, x;
for(x = 0; x < SIGFDIOV_COUNT; x++)
{
iov[x].iov_base = &fdsig[x];
iov[x].iov_len = sizeof(struct our_signalfd_siginfo);
}
while(1)
{
ret = readv(rb_get_fd(F), iov, SIGFDIOV_COUNT);
if(ret == 0 || (ret < 0 && !rb_ignore_errno(errno)))
{
rb_close(F);
rb_epoll_init_event();
return;
}
if(ret < 0)
{
rb_setselect(F, RB_SELECT_READ, signalfd_handler, NULL);
return;
}
for(x = 0; x < ret / (int)sizeof(struct our_signalfd_siginfo); x++)
{
#if __WORDSIZE == 32 && defined(__sparc__)
uint32_t *q = (uint32_t *)&fdsig[x].svptr;
ev = (struct ev_entry *)q[0];
#else
ev = (struct ev_entry *)(uintptr_t)(fdsig[x].svptr);
#endif
if(ev == NULL)
continue;
rb_run_event(ev);
}
}
}
static void
rb_helper_write_sendq(rb_fde_t *F, void *helper_ptr)
{
rb_helper *helper = helper_ptr;
int retlen;
if(rb_linebuf_len(&helper->sendq) > 0)
{
while((retlen = rb_linebuf_flush(F, &helper->sendq)) > 0)
;
if(retlen == 0 || (retlen < 0 && !rb_ignore_errno(errno)))
{
rb_helper_restart(helper);
return;
}
}
if(rb_linebuf_len(&helper->sendq) > 0)
rb_setselect(helper->ofd, RB_SELECT_WRITE, rb_helper_write_sendq, helper);
}
static void
rb_helper_read_cb(rb_fde_t *F, void *data)
{
rb_helper *helper = (rb_helper *)data;
char buf[4096];
ssize_t length;
if(helper == NULL)
return;
while((length = rb_read(helper->ifd, buf, sizeof(buf))) > 0)
{
rb_linebuf_parse(helper->recvq, buf, (size_t)length, 0);
helper->read_cb(helper);
}
if(length == 0 || (length < 0 && !rb_ignore_errno(errno)))
{
rb_helper_restart(helper);
return;
}
rb_setselect(helper->ifd, RB_SELECT_READ, rb_helper_read_cb, helper);
}
static int
do_ssl_handshake(rb_fde_t *F, PF * callback)
{
int ret;
int flags;
ret = gnutls_handshake(SSL_P(F));
if (ret < 0)
{
if ((ret == GNUTLS_E_INTERRUPTED && rb_ignore_errno(errno)) || ret == GNUTLS_E_AGAIN)
{
if (gnutls_record_get_direction(SSL_P(F)) == 0)
flags = RB_SELECT_READ;
else
flags = RB_SELECT_WRITE;
rb_setselect(F, flags, callback, NULL);
return 0;
}
F->ssl_errno = ret;
return -1;
}
return 1; /* handshake is finished..go about life */
}
int
rb_select_poll(long delay)
{
int num;
int fd;
int ci;
PF *hdl;
void *data;
struct pollfd *pfd;
int revents;
num = poll(pollfd_list.pollfds, pollfd_list.maxindex + 1, delay);
rb_set_time();
if(num < 0) {
if(!rb_ignore_errno(errno))
return RB_OK;
else
return RB_ERROR;
}
if(num == 0)
return RB_OK;
/* XXX we *could* optimise by falling out after doing num fds ... */
for(ci = 0; ci < pollfd_list.maxindex + 1; ci++) {
rb_fde_t *F;
pfd = &pollfd_list.pollfds[ci];
revents = pfd->revents;
fd = pfd->fd;
if(revents == 0 || fd == -1)
continue;
F = rb_find_fd(fd);
if(F == NULL)
continue;
if(revents & (POLLRDNORM | POLLIN | POLLHUP | POLLERR)) {
hdl = F->read_handler;
data = F->read_data;
F->read_handler = NULL;
F->read_data = NULL;
if(hdl)
hdl(F, data);
}
if(IsFDOpen(F) && (revents & (POLLWRNORM | POLLOUT | POLLHUP | POLLERR))) {
hdl = F->write_handler;
data = F->write_data;
F->write_handler = NULL;
F->write_data = NULL;
if(hdl)
hdl(F, data);
}
if(F->read_handler == NULL)
rb_setselect_poll(F, RB_SELECT_READ, NULL, NULL);
if(F->write_handler == NULL)
rb_setselect_poll(F, RB_SELECT_WRITE, NULL, NULL);
}
return 0;
}
/* int rb_select(long delay)
* Input: The maximum time to delay.
* Output: Returns -1 on error, 0 on success.
* Side-effects: Deregisters future interest in IO and calls the handlers
* if an event occurs for an FD.
* Comments: Check all connections for new connections and input data
* that is to be processed. Also check for connections with data queued
* and whether we can write it out.
* Called to do the new-style IO, courtesy of squid (like most of this
* new IO code). This routine handles the stuff we've hidden in
* rb_setselect and fd_table[] and calls callbacks for IO ready
* events.
*/
int
rb_select_sigio(long delay)
{
int num = 0;
int revents = 0;
int sig;
int fd;
int ci;
PF *hdl;
rb_fde_t *F;
void *data;
siginfo_t si;
struct timespec timeout;
if(rb_sigio_supports_event() || delay >= 0) {
timeout.tv_sec = (delay / 1000);
timeout.tv_nsec = (delay % 1000) * 1000000;
}
for(;;) {
if(!sigio_is_screwed) {
if(can_do_event || delay < 0) {
sig = sigwaitinfo(&our_sigset, &si);
} else
sig = sigtimedwait(&our_sigset, &si, &timeout);
if(sig > 0) {
if(sig == SIGIO) {
rb_lib_log
("Kernel RT Signal queue overflowed. Is ulimit -i too small(or perhaps /proc/sys/kernel/rtsig-max on old kernels)");
sigio_is_screwed = 1;
break;
}
#ifdef SIGIO_SCHED_EVENT
if(sig == RTSIGTIM && can_do_event) {
struct ev_entry *ev = (struct ev_entry *)si.si_ptr;
if(ev == NULL)
continue;
rb_run_event(ev);
continue;
}
#endif
fd = si.si_fd;
pollfd_list.pollfds[fd].revents |= si.si_band;
revents = pollfd_list.pollfds[fd].revents;
num++;
F = rb_find_fd(fd);
if(F == NULL)
continue;
if(revents & (POLLRDNORM | POLLIN | POLLHUP | POLLERR)) {
hdl = F->read_handler;
data = F->read_data;
F->read_handler = NULL;
F->read_data = NULL;
if(hdl)
hdl(F, data);
}
if(revents & (POLLWRNORM | POLLOUT | POLLHUP | POLLERR)) {
hdl = F->write_handler;
data = F->write_data;
F->write_handler = NULL;
F->write_data = NULL;
if(hdl)
hdl(F, data);
}
} else
break;
} else
break;
}
if(!sigio_is_screwed) { /* We don't need to proceed */
rb_set_time();
return 0;
}
signal(RTSIGIO, SIG_IGN);
signal(RTSIGIO, SIG_DFL);
sigio_is_screwed = 0;
num = poll(pollfd_list.pollfds, pollfd_list.maxindex + 1, delay);
rb_set_time();
if(num < 0) {
if(!rb_ignore_errno(errno))
return RB_OK;
else
return RB_ERROR;
}
if(num == 0)
return RB_OK;
/* XXX we *could* optimise by falling out after doing num fds ... */
for(ci = 0; ci < pollfd_list.maxindex + 1; ci++) {
if(((revents = pollfd_list.pollfds[ci].revents) == 0)
|| (pollfd_list.pollfds[ci].fd) == -1)
continue;
fd = pollfd_list.pollfds[ci].fd;
F = rb_find_fd(fd);
if(F == NULL)
continue;
if(revents & (POLLRDNORM | POLLIN | POLLHUP | POLLERR)) {
hdl = F->read_handler;
data = F->read_data;
F->read_handler = NULL;
F->read_data = NULL;
if(hdl)
hdl(F, data);
}
if(IsFDOpen(F) && (revents & (POLLWRNORM | POLLOUT | POLLHUP | POLLERR))) {
hdl = F->write_handler;
data = F->write_data;
F->write_handler = NULL;
F->write_data = NULL;
if(hdl)
hdl(F, data);
}
if(F->read_handler == NULL)
rb_setselect_sigio(F, RB_SELECT_READ, NULL, NULL);
if(F->write_handler == NULL)
rb_setselect_sigio(F, RB_SELECT_WRITE, NULL, NULL);
}
return 0;
}
int
rb_select_devpoll(long delay)
{
int num, i;
struct pollfd pollfds[maxfd];
struct dvpoll dopoll;
do
{
for(;;)
{
dopoll.dp_timeout = delay;
dopoll.dp_nfds = maxfd;
dopoll.dp_fds = &pollfds[0];
num = ioctl(dpfd, DP_POLL, &dopoll);
if(num >= 0)
break;
if(rb_ignore_errno(errno))
break;
rb_set_time();
return RB_ERROR;
}
rb_set_time();
if(num == 0)
continue;
for(i = 0; i < num; i++)
{
int fd = dopoll.dp_fds[i].fd;
PF *hdl = NULL;
rb_fde_t *F = rb_find_fd(fd);
if((dopoll.dp_fds[i].revents & (POLLRDNORM | POLLIN | POLLHUP |
POLLERR))
&& (dopoll.dp_fds[i].events & (POLLRDNORM | POLLIN)))
{
if((hdl = F->read_handler) != NULL)
{
F->read_handler = NULL;
hdl(F, F->read_data);
/*
* this call used to be with a NULL pointer, BUT
* in the devpoll case we only want to update the
* poll set *if* the handler changes state (active ->
* NULL or vice versa.)
*/
devpoll_update_events(F, RB_SELECT_READ, F->read_handler);
}
}
if(!IsFDOpen(F))
continue; /* Read handler closed us..go on to do something more useful */
if((dopoll.dp_fds[i].revents & (POLLWRNORM | POLLOUT | POLLHUP |
POLLERR))
&& (dopoll.dp_fds[i].events & (POLLWRNORM | POLLOUT)))
{
if((hdl = F->write_handler) != NULL)
{
F->write_handler = NULL;
hdl(F, F->write_data);
/* See above similar code in the read case */
devpoll_update_events(F,
RB_SELECT_WRITE, F->write_handler);
}
}
}
return RB_OK;
}
while(0);
/* XXX Get here, we broke! */
return 0;
}
int
rb_select_epoll(long delay)
{
int num, i, flags, old_flags, op;
struct epoll_event ep_event;
int o_errno;
void *data;
num = epoll_wait(ep_info->ep, ep_info->pfd, ep_info->pfd_size, delay);
/* save errno as rb_set_time() will likely clobber it */
o_errno = errno;
rb_set_time();
errno = o_errno;
if(num < 0 && !rb_ignore_errno(o_errno))
return RB_ERROR;
if(num <= 0)
return RB_OK;
for(i = 0; i < num; i++)
{
PF *hdl;
rb_fde_t *F = ep_info->pfd[i].data.ptr;
old_flags = F->pflags;
if(ep_info->pfd[i].events & (EPOLLIN | EPOLLHUP | EPOLLERR))
{
hdl = F->read_handler;
data = F->read_data;
F->read_handler = NULL;
F->read_data = NULL;
if(hdl)
{
hdl(F, data);
}
}
if(!IsFDOpen(F))
continue;
if(ep_info->pfd[i].events & (EPOLLOUT | EPOLLHUP | EPOLLERR))
{
hdl = F->write_handler;
data = F->write_data;
F->write_handler = NULL;
F->write_data = NULL;
if(hdl)
{
hdl(F, data);
}
}
if(!IsFDOpen(F))
continue;
flags = 0;
if(F->read_handler != NULL)
flags |= EPOLLIN;
if(F->write_handler != NULL)
flags |= EPOLLOUT;
if(old_flags != flags)
{
if(flags == 0)
op = EPOLL_CTL_DEL;
else
op = EPOLL_CTL_MOD;
F->pflags = ep_event.events = flags;
ep_event.data.ptr = F;
if(op == EPOLL_CTL_MOD || op == EPOLL_CTL_ADD)
ep_event.events |= EPOLLET;
if(epoll_ctl(ep_info->ep, op, F->fd, &ep_event) != 0)
{
rb_lib_log("rb_select_epoll(): epoll_ctl failed: %s",
strerror(errno));
}
}
}
return RB_OK;
}
int
rb_select_kqueue(long delay)
{
int num, i;
struct timespec poll_time;
struct timespec *pt;
rb_fde_t *F;
if(delay < 0)
{
pt = NULL;
}
else
{
pt = &poll_time;
poll_time.tv_sec = delay / 1000;
poll_time.tv_nsec = (delay % 1000) * 1000000;
}
for(;;)
{
num = kevent(kq, kqlst, kqoff, kqout, kqmax, pt);
kqoff = 0;
if(num >= 0)
break;
if(rb_ignore_errno(errno))
break;
rb_set_time();
return RB_ERROR;
/* NOTREACHED */
}
rb_set_time();
if(num == 0)
return RB_OK; /* No error.. */
for(i = 0; i < num; i++)
{
PF *hdl = NULL;
if(kqout[i].flags & EV_ERROR)
{
errno = kqout[i].data;
/* XXX error == bad! -- adrian */
continue; /* XXX! */
}
switch (kqout[i].filter)
{
case EVFILT_READ:
F = kqout[i].udata;
if((hdl = F->read_handler) != NULL)
{
F->read_handler = NULL;
hdl(F, F->read_data);
}
break;
case EVFILT_WRITE:
F = kqout[i].udata;
if((hdl = F->write_handler) != NULL)
{
F->write_handler = NULL;
hdl(F, F->write_data);
}
break;
#if defined(EVFILT_TIMER)
case EVFILT_TIMER:
rb_run_event(kqout[i].udata);
break;
#endif
default:
/* Bad! -- adrian */
break;
}
}
return RB_OK;
}
