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