mirror of
https://libwebsockets.org/repo/libwebsockets
synced 2024-11-25 01:56:45 +00:00
99 lines
2.9 KiB
C
99 lines
2.9 KiB
C
/*
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* Captive portal detect for Secure Streams
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*
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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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#include <private-lib-core.h>
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typedef struct ss_cpd {
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struct lws_ss_handle *ss;
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void *opaque_data;
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/* ... application specific state ... */
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lws_sorted_usec_list_t sul;
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} ss_cpd_t;
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static lws_ss_state_return_t
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ss_cpd_state(void *userobj, void *sh, lws_ss_constate_t state,
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lws_ss_tx_ordinal_t ack)
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{
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ss_cpd_t *m = (ss_cpd_t *)userobj;
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struct lws_context *cx = (struct lws_context *)m->opaque_data;
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lwsl_ss_info(m->ss, "%s, ord 0x%x\n", lws_ss_state_name((int)state),
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(unsigned int)ack);
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switch (state) {
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case LWSSSCS_CREATING:
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lws_ss_start_timeout(m->ss, 3 * LWS_US_PER_SEC);
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return lws_ss_request_tx(m->ss);
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case LWSSSCS_QOS_ACK_REMOTE:
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lws_system_cpd_set(cx, LWS_CPD_INTERNET_OK);
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cx->ss_cpd = NULL;
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return LWSSSSRET_DESTROY_ME;
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case LWSSSCS_TIMEOUT:
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case LWSSSCS_ALL_RETRIES_FAILED:
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case LWSSSCS_DISCONNECTED:
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/*
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* First result reported sticks... if nothing else, this will
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* cover the situation we didn't connect to anything
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*/
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lws_system_cpd_set(cx, LWS_CPD_NO_INTERNET);
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cx->ss_cpd = NULL;
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return LWSSSSRET_DESTROY_ME;
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default:
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break;
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}
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return LWSSSSRET_OK;
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}
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static const lws_ss_info_t ssi_cpd = {
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.handle_offset = offsetof(ss_cpd_t, ss),
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.opaque_user_data_offset = offsetof(ss_cpd_t, opaque_data),
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.state = ss_cpd_state,
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.user_alloc = sizeof(ss_cpd_t),
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.streamtype = "captive_portal_detect",
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};
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int
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lws_ss_sys_cpd(struct lws_context *cx)
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{
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if (cx->ss_cpd) {
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lwsl_cx_notice(cx, "CPD already ongoing");
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return 0;
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}
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if (lws_ss_create(cx, 0, &ssi_cpd, cx, &cx->ss_cpd, NULL, NULL)) {
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lwsl_cx_info(cx, "Create stream failed (policy?)");
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return 1;
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}
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return 0;
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}
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