libwebsockets
Lightweight C library for HTML5 websockets
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lws-callbacks.h
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1/*
2 * libwebsockets - small server side websockets and web server implementation
3 *
4 * Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal in the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
22 * IN THE SOFTWARE.
23 */
24
37
39 int where;
40 int ret;
41};
42
58
59enum {
67
69
74
76};
77
79 struct lws_vhost *vh;
80 const char *element_overrides[LWS_TLS_TOTAL_COUNT]; /* NULL = use pvo */
81};
82
83/*
84 * With LWS_CALLBACK_FILTER_NETWORK_CONNECTION callback, user_data pointer
85 * points to one of these
86 */
87
93
94/*
95 * NOTE: These public enums are part of the abi. If you want to add one,
96 * add it at where specified so existing users are unaffected.
97 */
100
101 /* ---------------------------------------------------------------------
102 * ----- Callbacks related to wsi and protocol binding lifecycle -----
103 */
104
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124
125 /* ---------------------------------------------------------------------
126 * ----- Callbacks related to Server TLS -----
127 */
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169
170 /* ---------------------------------------------------------------------
171 * ----- Callbacks related to Client TLS -----
172 */
173
204
205 /* ---------------------------------------------------------------------
206 * ----- Callbacks related to HTTP Server -----
207 */
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343
344 /* ---------------------------------------------------------------------
345 * ----- Callbacks related to HTTP Client -----
346 */
347
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400
401 /* ---------------------------------------------------------------------
402 * ----- Callbacks related to Websocket Server -----
403 */
404
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463
464 /* ---------------------------------------------------------------------
465 * ----- Callbacks related to Websocket Client -----
466 */
467
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605 /* ---------------------------------------------------------------------
606 * ----- Callbacks related to external poll loop integration -----
607 */
608
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614 /* external poll() management support */
631
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663
664 /* ---------------------------------------------------------------------
665 * ----- Callbacks related to CGI serving -----
666 */
667
673
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695
696 /* ---------------------------------------------------------------------
697 * ----- Callbacks related to Generic Sessions -----
698 */
699
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716 /* ---------------------------------------------------------------------
717 * ----- Callbacks related to RAW PROXY -----
718 */
719
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751
752 /* ---------------------------------------------------------------------
753 * ----- Callbacks related to RAW sockets -----
754 */
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774 /* ---------------------------------------------------------------------
775 * ----- Callbacks related to RAW file handles -----
776 */
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796 /* ---------------------------------------------------------------------
797 * ----- Callbacks related to generic wsi events -----
798 */
799
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828
829 /* ---------------------------------------------------------------------
830 * ----- Callbacks related to TLS certificate management -----
831 */
832
845
851
852 /* ---------------------------------------------------------------------
853 * ----- Callbacks related to MQTT Client -----
854 */
855
886
887 /****** add new things just above ---^ ******/
888
891};
892
893
894
910typedef int
911lws_callback_function(struct lws *wsi, enum lws_callback_reasons reason,
912 void *user, void *in, size_t len);
913
914#define LWS_CB_REASON_AUX_BF__CGI 1
915#define LWS_CB_REASON_AUX_BF__PROXY 2
916#define LWS_CB_REASON_AUX_BF__CGI_CHUNK_END 4
917#define LWS_CB_REASON_AUX_BF__CGI_HEADERS 8
918#define LWS_CB_REASON_AUX_BF__PROXY_TRANS_END 16
919#define LWS_CB_REASON_AUX_BF__PROXY_HEADERS 32
const char * element_overrides[LWS_TLS_TOTAL_COUNT]
struct sockaddr_storage cli_addr
struct lws_vhost * vh
lws_cert_update_state
int lws_callback_function(struct lws *wsi, enum lws_callback_reasons reason, void *user, void *in, size_t len)
lws_callback_reasons
@ LWS_TLS_REQ_ELEMENT_STATE
@ LWS_TLS_SET_AUTH_PATH
@ LWS_TLS_REQ_ELEMENT_SUBJECT_ALT_NAME
@ LWS_TLS_REQ_ELEMENT_LOCALITY
@ LWS_TLS_TOTAL_COUNT
@ LWS_TLS_REQ_ELEMENT_COUNTRY
@ LWS_TLS_SET_KEY_PATH
@ LWS_TLS_REQ_ELEMENT_COUNT
@ LWS_TLS_REQ_ELEMENT_ORGANIZATION
@ LWS_TLS_REQ_ELEMENT_EMAIL
@ LWS_TLS_SET_CERT_PATH
@ LWS_TLS_SET_DIR_URL
@ LWS_TLS_REQ_ELEMENT_COMMON_NAME
@ LWS_CUS_REQ
@ LWS_CUS_FAILED
@ LWS_CUS_IDLE
@ LWS_CUS_STARTING
@ LWS_CUS_ISSUE
@ LWS_CUS_CHALLENGE
@ LWS_CUS_REG
@ LWS_CUS_AUTH
@ LWS_CUS_CREATE_KEYS
@ LWS_CUS_SUCCESS
@ LWS_CUS_CREATE_REQ
@ LWS_CUS_CONFIRM
@ LWS_CALLBACK_RAW_PROXY_SRV_BIND_PROTOCOL
@ LWS_CALLBACK_FILTER_NETWORK_CONNECTION
@ LWS_CALLBACK_VERIFY_BASIC_AUTHORIZATION
@ LWS_CALLBACK_HTTP_BIND_PROTOCOL
@ LWS_CALLBACK_OPENSSL_LOAD_EXTRA_SERVER_VERIFY_CERTS
@ LWS_CALLBACK_MQTT_SUBSCRIBED
@ LWS_CALLBACK_UNLOCK_POLL
@ LWS_CALLBACK_CLIENT_RECEIVE_PONG
@ LWS_CALLBACK_RAW_ADOPT
@ LWS_CALLBACK_OPENSSL_PERFORM_SERVER_CERT_VERIFICATION
@ LWS_CALLBACK_COMPLETED_CLIENT_HTTP
@ LWS_CALLBACK_CLIENT_CLOSED
@ LWS_CALLBACK_CLIENT_CONFIRM_EXTENSION_SUPPORTED
@ LWS_CALLBACK_DEL_POLL_FD
@ LWS_CALLBACK_RAW_PROXY_CLI_BIND_PROTOCOL
@ LWS_CALLBACK_CGI
@ LWS_CALLBACK_RAW_PROXY_CLI_CLOSE
@ LWS_CALLBACK_ESTABLISHED
@ LWS_CALLBACK_RAW_SKT_BIND_PROTOCOL
@ LWS_CALLBACK_CLIENT_HTTP_BIND_PROTOCOL
@ LWS_CALLBACK_RECEIVE_PONG
@ LWS_CALLBACK_HTTP_BODY_COMPLETION
@ LWS_CALLBACK_RAW_PROXY_SRV_CLOSE
@ LWS_CALLBACK_MQTT_ACK
@ LWS_CALLBACK_CGI_PROCESS_ATTACH
@ LWS_CALLBACK_HTTP_CONFIRM_UPGRADE
@ LWS_CALLBACK_MQTT_NEW_CLIENT_INSTANTIATED
@ LWS_CALLBACK_CONFIRM_EXTENSION_OKAY
@ LWS_CALLBACK_MQTT_CLIENT_WRITEABLE
@ LWS_CALLBACK_MQTT_RESEND
@ LWS_CALLBACK_TIMER
@ LWS_CALLBACK_HTTP_DROP_PROTOCOL
@ LWS_CALLBACK_WS_SERVER_BIND_PROTOCOL
@ LWS_CALLBACK_VHOST_CERT_AGING
@ LWS_CALLBACK_RAW_ADOPT_FILE
@ LWS_CALLBACK_WS_CLIENT_DROP_PROTOCOL
@ LWS_CALLBACK_CLOSED
@ LWS_CALLBACK_RECEIVE
@ LWS_CALLBACK_RAW_SKT_DROP_PROTOCOL
@ LWS_CALLBACK_SSL_INFO
@ LWS_CALLBACK_VHOST_CERT_UPDATE
@ LWS_CALLBACK_PROTOCOL_DESTROY
@ LWS_CALLBACK_RAW_PROXY_SRV_WRITEABLE
@ LWS_CALLBACK_RAW_FILE_BIND_PROTOCOL
@ LWS_CALLBACK_CGI_STDIN_DATA
@ LWS_CALLBACK_RAW_PROXY_CLI_RX
@ LWS_CALLBACK_ESTABLISHED_CLIENT_HTTP
@ LWS_CALLBACK_RAW_RX
@ LWS_CALLBACK_MQTT_IDLE
@ LWS_CALLBACK_FILTER_HTTP_CONNECTION
@ LWS_CALLBACK_CLIENT_ESTABLISHED
@ LWS_CALLBACK_MQTT_CLIENT_RX
@ LWS_CALLBACK_SERVER_WRITEABLE
@ LWS_CALLBACK_MQTT_DROP_PROTOCOL
@ LWS_CALLBACK_WSI_TX_CREDIT_GET
@ LWS_CALLBACK_CLOSED_HTTP
@ LWS_CALLBACK_MQTT_CLIENT_CLOSED
@ LWS_CALLBACK_CONNECTING
@ LWS_CALLBACK_LOCK_POLL
@ LWS_CALLBACK_PROCESS_HTML
@ LWS_CALLBACK_RAW_PROXY_SRV_RX
@ LWS_CALLBACK_CLIENT_WRITEABLE
@ LWS_CALLBACK_CLIENT_APPEND_HANDSHAKE_HEADER
@ LWS_CALLBACK_USER
@ LWS_CALLBACK_MQTT_CLIENT_ESTABLISHED
@ LWS_CALLBACK_CLIENT_FILTER_PRE_ESTABLISH
@ LWS_CALLBACK_HTTP_PMO
@ LWS_CALLBACK_HTTP_FILE_COMPLETION
@ LWS_CALLBACK_CHILD_CLOSING
@ LWS_CALLBACK_CHANGE_MODE_POLL_FD
@ LWS_CALLBACK_WS_CLIENT_BIND_PROTOCOL
@ LWS_CALLBACK_RAW_CONNECTED
@ LWS_CALLBACK_RECEIVE_CLIENT_HTTP
@ LWS_CALLBACK_ADD_POLL_FD
@ LWS_CALLBACK_EVENT_WAIT_CANCELLED
@ LWS_CALLBACK_ADD_HEADERS
@ LWS_CALLBACK_RAW_FILE_DROP_PROTOCOL
@ LWS_CALLBACK_CLIENT_RECEIVE
@ LWS_CALLBACK_WS_EXT_DEFAULTS
@ LWS_CALLBACK_CLIENT_HTTP_DROP_PROTOCOL
@ LWS_CALLBACK_SESSION_INFO
@ LWS_CALLBACK_WS_PEER_INITIATED_CLOSE
@ LWS_CALLBACK_CLOSED_CLIENT_HTTP
@ LWS_CALLBACK_HTTP_BODY
@ LWS_CALLBACK_RAW_WRITEABLE_FILE
@ LWS_CALLBACK_RAW_RX_FILE
@ LWS_CALLBACK_CGI_TERMINATED
@ LWS_CALLBACK_MQTT_UNSUBSCRIBED
@ LWS_CALLBACK_WSI_DESTROY
@ LWS_CALLBACK_WS_SERVER_DROP_PROTOCOL
@ LWS_CALLBACK_RAW_PROXY_CLI_DROP_PROTOCOL
@ LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION
@ LWS_CALLBACK_RAW_WRITEABLE
@ LWS_CALLBACK_RAW_PROXY_CLI_ADOPT
@ LWS_CALLBACK_RAW_CLOSE_FILE
@ LWS_CALLBACK_PROTOCOL_INIT
@ LWS_CALLBACK_CGI_STDIN_COMPLETED
@ LWS_CALLBACK_RECEIVE_CLIENT_HTTP_READ
@ LWS_CALLBACK_CLIENT_CONNECTION_ERROR
@ LWS_CALLBACK_RAW_PROXY_CLI_WRITEABLE
@ LWS_CALLBACK_GET_THREAD_ID
@ LWS_CALLBACK_MQTT_UNSUBSCRIBE_TIMEOUT
@ LWS_CALLBACK_OPENSSL_LOAD_EXTRA_CLIENT_VERIFY_CERTS
@ LWS_CALLBACK_MQTT_SHADOW_TIMEOUT
@ LWS_CALLBACK_RAW_CLOSE
@ LWS_CALLBACK_OPENSSL_PERFORM_CLIENT_CERT_VERIFICATION
@ LWS_CALLBACK_HTTP
@ LWS_CALLBACK_SERVER_NEW_CLIENT_INSTANTIATED
@ LWS_CALLBACK_CLIENT_HTTP_WRITEABLE
@ LWS_CALLBACK_RAW_PROXY_SRV_DROP_PROTOCOL
@ LWS_CALLBACK_GS_EVENT
@ LWS_CALLBACK_CLIENT_HTTP_REDIRECT
@ LWS_CALLBACK_CHECK_ACCESS_RIGHTS
@ LWS_CALLBACK_RAW_PROXY_SRV_ADOPT
@ LWS_CALLBACK_WSI_CREATE
@ LWS_CALLBACK_HTTP_WRITEABLE
int lws_sockfd_type