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/*
* libwebsockets - small server side websockets and web server implementation
*
* Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include <private-lib-core.h>
static int
rops_handle_POLLIN_raw_file(struct lws_context_per_thread *pt, struct lws *wsi,
struct lws_pollfd *pollfd)
{
int n;
if (pollfd->revents & LWS_POLLOUT) {
n = lws_callback_as_writeable(wsi);
if (lws_change_pollfd(wsi, LWS_POLLOUT, 0)) {
lwsl_info("failed at set pollfd\n");
return LWS_HPI_RET_WSI_ALREADY_DIED;
}
if (n)
return LWS_HPI_RET_PLEASE_CLOSE_ME;
}
if (pollfd->revents & LWS_POLLIN) {
if (user_callback_handle_rxflow(wsi->protocol->callback,
wsi, LWS_CALLBACK_RAW_RX_FILE,
wsi->user_space, NULL, 0)) {
lwsl_debug("raw rx callback closed it\n");
return LWS_HPI_RET_PLEASE_CLOSE_ME;
}
}
if (pollfd->revents & LWS_POLLHUP)
if (!(pollfd->revents & LWS_POLLIN))
return LWS_HPI_RET_PLEASE_CLOSE_ME;
return LWS_HPI_RET_HANDLED;
}
static int
rops_adoption_bind_raw_file(struct lws *wsi, int type, const char *vh_prot_name)
{
/* no socket or http: it can only be a raw file */
if ((type & LWS_ADOPT_HTTP) || (type & LWS_ADOPT_SOCKET) ||
(type & _LWS_ADOPT_FINISH))
return 0; /* no match */
lws_role_transition(wsi, 0, LRS_ESTABLISHED, &role_ops_raw_file);
if (!vh_prot_name) {
if (wsi->vhost->default_protocol_index >=
wsi->vhost->count_protocols)
return 0;
wsi->protocol = &wsi->vhost->protocols[
wsi->vhost->default_protocol_index];
}
return 1; /* bound */
}
const struct lws_role_ops role_ops_raw_file = {
/* role name */ "raw-file",
/* alpn id */ NULL,
/* check_upgrades */ NULL,
/* pt_init_destroy */ NULL,
/* init_vhost */ NULL,
/* destroy_vhost */ NULL,
/* service_flag_pending */ NULL,
/* handle_POLLIN */ rops_handle_POLLIN_raw_file,
/* handle_POLLOUT */ NULL,
/* perform_user_POLLOUT */ NULL,
/* callback_on_writable */ NULL,
/* tx_credit */ NULL,
/* write_role_protocol */ NULL,
/* encapsulation_parent */ NULL,
/* alpn_negotiated */ NULL,
/* close_via_role_protocol */ NULL,
/* close_role */ NULL,
/* close_kill_connection */ NULL,
/* destroy_role */ NULL,
/* adoption_bind */ rops_adoption_bind_raw_file,
/* client_bind */ NULL,
/* issue_keepalive */ NULL,
/* adoption_cb clnt, srv */ { LWS_CALLBACK_RAW_ADOPT_FILE,
LWS_CALLBACK_RAW_ADOPT_FILE },
/* rx_cb clnt, srv */ { LWS_CALLBACK_RAW_RX_FILE,
LWS_CALLBACK_RAW_RX_FILE },
/* writeable cb clnt, srv */ { LWS_CALLBACK_RAW_WRITEABLE_FILE,
LWS_CALLBACK_RAW_WRITEABLE_FILE},
/* close cb clnt, srv */ { LWS_CALLBACK_RAW_CLOSE_FILE,
LWS_CALLBACK_RAW_CLOSE_FILE},
/* protocol_bind cb c, srv */ { LWS_CALLBACK_RAW_FILE_BIND_PROTOCOL,
LWS_CALLBACK_RAW_FILE_BIND_PROTOCOL },
/* protocol_unbind cb c, srv */ { LWS_CALLBACK_RAW_FILE_DROP_PROTOCOL,
LWS_CALLBACK_RAW_FILE_DROP_PROTOCOL },
/* file_handle */ 1,
};