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libwebsockets/lib/roles/cgi/ops-cgi.c
2018-12-01 11:05:59 +08:00

124 lines
3.4 KiB
C

/*
* libwebsockets - small server side websockets and web server implementation
*
* Copyright (C) 2010-2018 Andy Green <andy@warmcat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation:
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include <core/private.h>
static int
rops_handle_POLLIN_cgi(struct lws_context_per_thread *pt, struct lws *wsi,
struct lws_pollfd *pollfd)
{
struct lws_cgi_args args;
assert(wsi->role_ops == &role_ops_cgi);
if (wsi->cgi_channel >= LWS_STDOUT &&
!(pollfd->revents & pollfd->events & LWS_POLLIN))
return LWS_HPI_RET_HANDLED;
if (wsi->cgi_channel == LWS_STDIN &&
!(pollfd->revents & pollfd->events & LWS_POLLOUT))
return LWS_HPI_RET_HANDLED;
if (wsi->cgi_channel == LWS_STDIN &&
lws_change_pollfd(wsi, LWS_POLLOUT, 0)) {
lwsl_info("failed at set pollfd\n");
return LWS_HPI_RET_WSI_ALREADY_DIED;
}
args.ch = wsi->cgi_channel;
args.stdwsi = &wsi->parent->http.cgi->stdwsi[0];
args.hdr_state = wsi->hdr_state;
lwsl_debug("CGI LWS_STDOUT %p wsistate 0x%x\n",
wsi->parent, wsi->wsistate);
if (user_callback_handle_rxflow(wsi->parent->protocol->callback,
wsi->parent, LWS_CALLBACK_CGI,
wsi->parent->user_space,
(void *)&args, 0))
return 1;
return LWS_HPI_RET_HANDLED;
}
static int
rops_handle_POLLOUT_cgi(struct lws *wsi)
{
return LWS_HP_RET_USER_SERVICE;
}
static int
rops_periodic_checks_cgi(struct lws_context *context, int tsi, time_t now)
{
struct lws_context_per_thread *pt = &context->pt[tsi];
lws_cgi_kill_terminated(pt);
return 0;
}
static int
rops_destroy_role_cgi(struct lws *wsi)
{
#if defined(LWS_WITH_ZLIB)
if (!wsi->http.cgi)
return 0;
if (!wsi->http.cgi->gzip_init)
return 0;
inflateEnd(&wsi->http.cgi->inflate);
wsi->http.cgi->gzip_init = 0;
#endif
return 0;
}
struct lws_role_ops role_ops_cgi = {
/* role name */ "cgi",
/* alpn id */ NULL,
/* check_upgrades */ NULL,
/* init_context */ NULL,
/* init_vhost */ NULL,
/* destroy_vhost */ NULL,
/* periodic_checks */ rops_periodic_checks_cgi,
/* service_flag_pending */ NULL,
/* handle_POLLIN */ rops_handle_POLLIN_cgi,
/* handle_POLLOUT */ rops_handle_POLLOUT_cgi,
/* 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 */ rops_destroy_role_cgi,
/* adoption_bind */ NULL,
/* client_bind */ NULL,
/* adoption_cb clnt, srv */ { 0, 0 },
/* rx_cb clnt, srv */ { 0, 0 },
/* writeable cb clnt, srv */ { 0, 0 },
/* close cb clnt, srv */ { 0, 0 },
/* protocol_bind_cb c,s */ { 0, 0 },
/* protocol_unbind_cb c,s */ { 0, 0 },
/* file_handle */ 0,
};