void
io_dispatch_connect(int fd, short ev, void *humppa)
{
struct io *io = humppa;
int r, e;
socklen_t sl;
io_frame_enter("io_dispatch_connect", io, ev);
if (ev == EV_TIMEOUT) {
close(fd);
io->sock = -1;
io_callback(io, IO_TIMEOUT);
} else {
sl = sizeof(e);
r = getsockopt(fd, SOL_SOCKET, SO_ERROR, &e, &sl);
if (r == -1) {
warn("io_dispatch_connect: getsockopt");
e = errno;
}
if (e) {
close(fd);
io->sock = -1;
io->error = strerror(e);
io_callback(io, e == ETIMEDOUT ? IO_TIMEOUT : IO_ERROR);
}
else {
io->state = IO_STATE_UP;
io_callback(io, IO_CONNECTED);
}
}
io_frame_leave(io);
}
void
io_dispatch(int fd, short ev, void *humppa)
{
struct io *io = humppa;
size_t w;
ssize_t n;
int saved_errno;
io_frame_enter("io_dispatch", io, ev);
if (ev == EV_TIMEOUT) {
io_callback(io, IO_TIMEOUT);
goto leave;
}
if (ev & EV_WRITE && (w = io_queued(io))) {
if ((n = iobuf_write(&io->iobuf, io->sock)) < 0) {
if (n == IOBUF_WANT_WRITE) /* kqueue bug? */
goto read;
if (n == IOBUF_CLOSED)
io_callback(io, IO_DISCONNECTED);
else {
saved_errno = errno;
io->error = strerror(errno);
errno = saved_errno;
io_callback(io, IO_ERROR);
}
goto leave;
}
if (w > io->lowat && w - n <= io->lowat)
io_callback(io, IO_LOWAT);
}
read:
if (ev & EV_READ) {
iobuf_normalize(&io->iobuf);
if ((n = iobuf_read(&io->iobuf, io->sock)) < 0) {
if (n == IOBUF_CLOSED)
io_callback(io, IO_DISCONNECTED);
else {
saved_errno = errno;
io->error = strerror(errno);
errno = saved_errno;
io_callback(io, IO_ERROR);
}
goto leave;
}
if (n)
io_callback(io, IO_DATAIN);
}
leave:
io_frame_leave(io);
}
void
io_dispatch_write_ssl(int fd, short event, void *humppa)
{
struct io *io = humppa;
int n, saved_errno;
size_t w2, w;
io_frame_enter("io_dispatch_write_ssl", io, event);
if (event == EV_TIMEOUT) {
io_callback(io, IO_TIMEOUT);
goto leave;
}
w = io_queued(io);
switch ((n = iobuf_write_ssl(io->iobuf, (SSL*)io->ssl))) {
case IOBUF_WANT_READ:
io_reset(io, EV_READ, io_dispatch_write_ssl);
break;
case IOBUF_WANT_WRITE:
io_reset(io, EV_WRITE, io_dispatch_write_ssl);
break;
case IOBUF_CLOSED:
io_callback(io, IO_DISCONNECTED);
break;
case IOBUF_ERROR:
saved_errno = errno;
io->error = strerror(errno);
errno = saved_errno;
io_callback(io, IO_ERROR);
break;
case IOBUF_SSLERROR:
io->error = io_ssl_error();
ssl_error("io_dispatch_write_ssl:SSL_write");
io_callback(io, IO_ERROR);
break;
default:
io_debug("io_dispatch_write_ssl(...) -> w=%d\n", n);
w2 = io_queued(io);
if (w > io->lowat && w2 <= io->lowat)
io_callback(io, IO_LOWAT);
break;
}
leave:
io_frame_leave(io);
}
void
io_dispatch_read_ssl(int fd, short event, void *humppa)
{
struct io *io = humppa;
int n, saved_errno;
io_frame_enter("io_dispatch_read_ssl", io, event);
if (event == EV_TIMEOUT) {
io_callback(io, IO_TIMEOUT);
goto leave;
}
again:
iobuf_normalize(&io->iobuf);
switch ((n = iobuf_read_ssl(&io->iobuf, (SSL*)io->ssl))) {
case IOBUF_WANT_READ:
io_reset(io, EV_READ, io_dispatch_read_ssl);
break;
case IOBUF_WANT_WRITE:
io_reset(io, EV_WRITE, io_dispatch_read_ssl);
break;
case IOBUF_CLOSED:
io_callback(io, IO_DISCONNECTED);
break;
case IOBUF_ERROR:
saved_errno = errno;
io->error = strerror(errno);
errno = saved_errno;
io_callback(io, IO_ERROR);
break;
case IOBUF_SSLERROR:
io->error = io_ssl_error();
ssl_error("io_dispatch_read_ssl:SSL_read");
io_callback(io, IO_ERROR);
break;
default:
io_debug("io_dispatch_read_ssl(...) -> r=%d\n", n);
io_callback(io, IO_DATAIN);
if (current == io && IO_READING(io) && SSL_pending(io->ssl))
goto again;
}
leave:
io_frame_leave(io);
}
void
io_dispatch_connect_ssl(int fd, short event, void *humppa)
{
struct io *io = humppa;
int e, ret;
io_frame_enter("io_dispatch_connect_ssl", io, event);
if (event == EV_TIMEOUT) {
io_callback(io, IO_TIMEOUT);
goto leave;
}
if ((ret = SSL_connect(io->ssl)) > 0) {
io->state = IO_STATE_UP;
io_callback(io, IO_TLSREADY);
goto leave;
}
switch ((e = SSL_get_error(io->ssl, ret))) {
case SSL_ERROR_WANT_READ:
io_reset(io, EV_READ, io_dispatch_connect_ssl);
break;
case SSL_ERROR_WANT_WRITE:
io_reset(io, EV_WRITE, io_dispatch_connect_ssl);
break;
default:
io->error = io_ssl_error();
ssl_error("io_dispatch_connect_ssl:SSL_connect");
io_callback(io, IO_TLSERROR);
break;
}
leave:
io_frame_leave(io);
}
