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libwebsockets/lib/roles/cgi/ops-cgi.c
Andy Green 1d2094996e refactor: absorb other caches into buflist
1) Remove the whole ah rxbuf and put things on to the wsi buflist

This eliminates the whole detachability thing based on ah rxbuf
state... ah can always be detached.

2) Remove h2 scratch and put it on the wsi buflist

3) Remove preamble_rx and use the wsi buflist

This was used in the case adopted sockets had already been read.


Basically there are now only three forced service scenarios

 - something in buflist (and not in state LRS_DEFERRING_ACTION)

 - tls layer has buffered rx

 - extension has buffered rx

This is a net removal of around 400 lines of special-casing.
2018-04-20 07:13:05 +08:00

100 lines
2.8 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 <private-libwebsockets.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->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;
}
struct lws_role_ops role_ops_cgi = {
/* role name */ "cgi",
/* alpn id */ NULL,
/* check_upgrades */ NULL,
/* init_context */ NULL,
/* init_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 */ NULL,
/* writeable cb clnt, srv */ { 0, 0 },
/* close cb clnt, srv */ { 0, 0 },
};