lib/lws-plat-optee.c

#include "private-libwebsockets.h"

/*
 * included from libwebsockets.c for OPTEE builds
 */

void TEE_GenerateRandom(void *randomBuffer, uint32_t randomBufferLen);

unsigned long long time_in_microseconds(void)
{
	return ((unsigned long long)time(NULL)) * 1000000;
}
#if 0
LWS_VISIBLE int
lws_get_random(struct lws_context *context, void *buf, int len)
{
	TEE_GenerateRandom(buf, len);

	return len;
}
#endif
LWS_VISIBLE int
lws_send_pipe_choked(struct lws *wsi)
{
#if 0
	struct lws_pollfd fds;

	/* treat the fact we got a truncated send pending as if we're choked */
	if (wsi->trunc_len)
		return 1;

	fds.fd = wsi->sock;
	fds.events = POLLOUT;
	fds.revents = 0;

	if (poll(&fds, 1, 0) != 1)
		return 1;

	if ((fds.revents & POLLOUT) == 0)
		return 1;
#endif
	/* okay to send another packet without blocking */

	return 0;
}

LWS_VISIBLE int
lws_poll_listen_fd(struct lws_pollfd *fd)
{
//	return poll(fd, 1, 0);

	return 0;
}

LWS_VISIBLE void
lws_cancel_service_pt(struct lws *wsi)
{
#if 0
	struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi];
	char buf = 0;

	if (write(pt->dummy_pipe_fds[1], &buf, sizeof(buf)) != 1)
		lwsl_err("Cannot write to dummy pipe");
#endif
}

LWS_VISIBLE void
lws_cancel_service(struct lws_context *context)
{
#if 0
	struct lws_context_per_thread *pt = &context->pt[0];
	char buf = 0, m = context->count_threads;

	while (m--) {
		if (write(pt->dummy_pipe_fds[1], &buf, sizeof(buf)) != 1)
			lwsl_err("Cannot write to dummy pipe");
		pt++;
	}
#endif
}
#if 0
LWS_VISIBLE void lwsl_emit_syslog(int level, const char *line)
{
	IMSG("%d: %s\n", level, line);
}
#endif

LWS_VISIBLE LWS_EXTERN int
_lws_plat_service_tsi(struct lws_context *context, int timeout_ms, int tsi)
{
	struct lws_context_per_thread *pt;
	int n = -1, m, c;
	//char buf;

	/* stay dead once we are dead */

	if (!context || !context->vhost_list)
		return 1;

	pt = &context->pt[tsi];

	if (timeout_ms < 0)
		goto faked_service;

	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;

	/*
	 * is there anybody with pending stuff that needs service forcing?
	 */
	if (!lws_service_adjust_timeout(context, 1, tsi)) {
		lwsl_notice("%s: doing forced service\n", __func__);
		/* -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 1
	n = poll(pt->fds, pt->fds_count, timeout_ms);

#ifdef LWS_OPENSSL_SUPPORT
	if (!pt->rx_draining_ext_list &&
	    !lws_ssl_anybody_has_buffered_read_tsi(context, tsi) && !n) {
#else
	if (!pt->rx_draining_ext_list && !n) /* poll timeout */ {
#endif
		lws_service_fd_tsi(context, NULL, tsi);
		return 0;
	}
#endif
faked_service:
	m = lws_service_flag_pending(context, tsi);
	if (m)
		c = -1; /* unknown limit */
	else
		if (n < 0) {
			if (LWS_ERRNO != LWS_EINTR)
				return -1;
			return 0;
		} else
			c = n;

	/* any socket with events to service? */
	for (n = 0; n < pt->fds_count && c; n++) {
		if (!pt->fds[n].revents)
			continue;

		c--;
#if 0
		if (pt->fds[n].fd == pt->dummy_pipe_fds[0]) {
			if (read(pt->fds[n].fd, &buf, 1) != 1)
				lwsl_err("Cannot read from dummy pipe.");
			continue;
		}
#endif
		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;
}

LWS_VISIBLE int
lws_plat_check_connection_error(struct lws *wsi)
{
	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, int fd)
{
	return 0;
}

LWS_VISIBLE void
lws_plat_drop_app_privileges(struct lws_context_creation_info *info)
{
}

LWS_VISIBLE int
lws_plat_context_early_init(void)
{
	return 0;
}

LWS_VISIBLE void
lws_plat_context_early_destroy(struct lws_context *context)
{
}

LWS_VISIBLE void
lws_plat_context_late_destroy(struct lws_context *context)
{
	if (context->lws_lookup)
		lws_free(context->lws_lookup);
}

/* cast a struct sockaddr_in6 * into addr for ipv6 */

LWS_VISIBLE int
lws_interface_to_sa(int ipv6, const char *ifname, struct sockaddr_in *addr,
		    size_t addrlen)
{
	return -1;
}

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;
}

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->fds_count--;
}

LWS_VISIBLE void
lws_plat_service_periodic(struct lws_context *context)
{
}

LWS_VISIBLE int
lws_plat_change_pollfd(struct lws_context *context,
		      struct lws *wsi, struct lws_pollfd *pfd)
{
	return 0;
}

LWS_VISIBLE const char *
lws_plat_inet_ntop(int af, const void *src, char *dst, int cnt)
{
	//return inet_ntop(af, src, dst, cnt);
	return "lws_plat_inet_ntop";
}

static lws_filefd_type
_lws_plat_file_open(struct lws *wsi, const char *filename,
		    unsigned long *filelen, int flags)
{
	return 0;
}

static int
_lws_plat_file_close(struct lws *wsi, lws_filefd_type fd)
{
	return 0;
}

unsigned long
_lws_plat_file_seek_cur(struct lws *wsi, lws_filefd_type fd, long offset)
{
	return 0;
}

static int
_lws_plat_file_read(struct lws *wsi, lws_filefd_type fd, unsigned long *amount,
		    unsigned char *buf, unsigned long len)
{

	return 0;
}

static int
_lws_plat_file_write(struct lws *wsi, lws_filefd_type fd, unsigned long *amount,
		     unsigned char *buf, unsigned long len)
{

	return 0;
}


LWS_VISIBLE int
lws_plat_init(struct lws_context *context,
	      struct lws_context_creation_info *info)
{
	/* master context has the global fd lookup array */
	context->lws_lookup = lws_zalloc(sizeof(struct lws *) *
					 context->max_fds);
	if (context->lws_lookup == NULL) {
		lwsl_err("OOM on lws_lookup array for %d connections\n",
			 context->max_fds);
		return 1;
	}

	lwsl_notice(" mem: platform fd map: %5lu bytes\n",
		    (long)sizeof(struct lws *) * context->max_fds);

	context->fops.open	= _lws_plat_file_open;
	context->fops.close	= _lws_plat_file_close;
	context->fops.seek_cur	= _lws_plat_file_seek_cur;
	context->fops.read	= _lws_plat_file_read;
	context->fops.write	= _lws_plat_file_write;

#ifdef LWS_WITH_PLUGINS
	if (info->plugin_dirs)
		lws_plat_plugins_init(context, info->plugin_dirs);
#endif

	return 0;
}