mirror of
https://github.com/warmcat/libwebsockets.git
synced 2025-03-16 00:00:07 +01:00
286cf4357a
Adapt the pt sul owner list to be an array, and define two different lists, one that acts like before and is the default for existing users, and another that has the ability to cooperate with systemwide suspend to restrict the interval spent suspended so that it will wake in time for the earliest thing on this wake-suspend sul list. Clean the api a bit and add lws_sul_cancel() that only needs the sul as the argument. Add a flag for client creation info to indicate that this client connection is important enough that, eg, validity checking it to detect silently dead connections should go on the wake-suspend sul list. That flag is exposed in secure streams policy so it can be added to a streamtype with "swake_validity": true Deprecate out the old vhost timer stuff that predates sul. Add a flag LWS_WITH_DEPRECATED_THINGS in cmake so users can get it back temporarily before it will be removed in a v4.2. Adapt all remaining in-tree users of it to use explicit suls.
149 lines
4 KiB
C
149 lines
4 KiB
C
/*
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* libwebsockets - small server side websockets and web server implementation
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*
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* Copyright (C) 2019 - 2020 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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* This is the glue that wires up raw-socket to Secure Streams.
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*/
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#include <private-lib-core.h>
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int
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secstream_raw(struct lws *wsi, enum lws_callback_reasons reason, void *user,
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void *in, size_t len)
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{
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lws_ss_handle_t *h = (lws_ss_handle_t *)lws_get_opaque_user_data(wsi);
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uint8_t buf[LWS_PRE + 1520], *p = &buf[LWS_PRE],
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*end = &buf[sizeof(buf) - 1];
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int f = 0, txr;
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size_t buflen;
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switch (reason) {
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case LWS_CALLBACK_CLIENT_CONNECTION_ERROR:
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assert(h);
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assert(h->policy);
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lwsl_info("%s: h: %p, %s CLIENT_CONNECTION_ERROR: %s\n", __func__,
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h, h->policy->streamtype, in ? (char *)in : "(null)");
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lws_ss_event_helper(h, LWSSSCS_UNREACHABLE);
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h->wsi = NULL;
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lws_ss_backoff(h);
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break;
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case LWS_CALLBACK_RAW_CLOSE:
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if (!h)
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break;
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lwsl_info("%s: h: %p, %s LWS_CALLBACK_CLOSED_CLIENT_HTTP\n",
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__func__, h,
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h->policy ? h->policy->streamtype : "no policy");
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h->wsi = NULL;
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if (h->policy && !(h->policy->flags & LWSSSPOLF_OPPORTUNISTIC) &&
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!h->txn_ok && !wsi->context->being_destroyed)
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lws_ss_backoff(h);
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if (lws_ss_event_helper(h, LWSSSCS_DISCONNECTED))
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lws_ss_destroy(&h);
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break;
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case LWS_CALLBACK_RAW_CONNECTED:
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lwsl_info("%s: RAW_CONNECTED\n", __func__);
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h->retry = 0;
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h->seqstate = SSSEQ_CONNECTED;
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lws_sul_cancel(&h->sul);
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lws_ss_event_helper(h, LWSSSCS_CONNECTED);
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lws_validity_confirmed(wsi);
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break;
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/* chunks of chunked content, with header removed */
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case LWS_CALLBACK_RAW_RX:
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if (!h)
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return 0;
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if (h->info.rx(ss_to_userobj(h), (const uint8_t *)in, len, 0) < 0)
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return -1;
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return 0; /* don't passthru */
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case LWS_CALLBACK_RAW_WRITEABLE:
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lwsl_info("%s: RAW_WRITEABLE\n", __func__);
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if (!h)
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return 0;
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buflen = lws_ptr_diff(end, p);
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txr = h->info.tx(ss_to_userobj(h), h->txord++, p, &buflen, &f);
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if (txr < 0) {
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lwsl_debug("%s: tx handler asked to close\n", __func__);
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return -1;
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}
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if (txr > 0) {
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/* don't want to send anything */
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lwsl_debug("%s: dont want to write\n", __func__);
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return 0;
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}
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/*
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* flags are ignored with raw, there are no protocol payload
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* boundaries, just an arbitrarily-fragmented bytestream
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*/
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p += buflen;
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if (lws_write(wsi, buf + LWS_PRE, lws_ptr_diff(p, buf + LWS_PRE),
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LWS_WRITE_HTTP) != (int)lws_ptr_diff(p, buf + LWS_PRE)) {
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lwsl_err("%s: write failed\n", __func__);
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return -1;
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}
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lws_set_timeout(wsi, 0, 0);
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break;
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default:
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break;
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}
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return lws_callback_http_dummy(wsi, reason, user, in, len);
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}
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static int
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secstream_connect_munge_raw(lws_ss_handle_t *h, char *buf, size_t len,
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struct lws_client_connect_info *i,
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union lws_ss_contemp *ct)
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{
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i->method = "RAW";
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return 0;
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}
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const struct lws_protocols protocol_secstream_raw = {
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"lws-secstream-raw",
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secstream_raw,
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0,
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0,
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};
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const struct ss_pcols ss_pcol_raw = {
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"raw",
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"",
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"lws-secstream-raw",
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secstream_connect_munge_raw,
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NULL
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};
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