135 lines
3.0 KiB
C
135 lines
3.0 KiB
C
/** @file
|
|
@brief Websocket private header
|
|
|
|
This is not to be included by the application.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 2019 Intel Corporation
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#include <toolchain/common.h>
|
|
|
|
#define WS_SHA1_OUTPUT_LEN 20
|
|
|
|
/* Min Websocket header length */
|
|
#define MIN_HEADER_LEN 2
|
|
|
|
/* Max Websocket header length */
|
|
#define MAX_HEADER_LEN 14
|
|
|
|
/* From RFC 6455 chapter 4.2.2 */
|
|
#define WS_MAGIC "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"
|
|
|
|
/**
|
|
* Websocket connection information
|
|
*/
|
|
__net_socket struct websocket_context {
|
|
union {
|
|
/** User data.
|
|
*/
|
|
void *user_data;
|
|
|
|
/** This is used during HTTP handshake to verify that the
|
|
* peer sent proper Sec-WebSocket-Accept key.
|
|
*/
|
|
uint8_t *sec_accept_key;
|
|
};
|
|
|
|
/** Reference count.
|
|
*/
|
|
atomic_t refcount;
|
|
|
|
/** Internal lock for protecting this context from multiple access.
|
|
*/
|
|
struct k_mutex lock;
|
|
|
|
/* The socket number is valid only after HTTP handshake is done
|
|
* so we can share the memory for these.
|
|
*/
|
|
union {
|
|
/** HTTP parser settings for the application usage */
|
|
const struct http_parser_settings *http_cb;
|
|
|
|
/** The Websocket socket id. If data is sent via this socket, it
|
|
* will automatically add Websocket headers etc into the data.
|
|
*/
|
|
int sock;
|
|
};
|
|
|
|
/** Temporary buffers used for HTTP handshakes and Websocket protocol
|
|
* headers. User must provide the actual buffer where the headers are
|
|
* stored temporarily.
|
|
*/
|
|
uint8_t *tmp_buf;
|
|
|
|
/** Temporary buffer length.
|
|
*/
|
|
size_t tmp_buf_len;
|
|
|
|
/** Current reading position in the tmp_buf
|
|
*/
|
|
size_t tmp_buf_pos;
|
|
|
|
/** The real TCP socket to use when sending Websocket data to peer.
|
|
*/
|
|
int real_sock;
|
|
|
|
/** Websocket connection masking value */
|
|
uint32_t masking_value;
|
|
|
|
/** Amount of data received. */
|
|
uint64_t total_read;
|
|
|
|
/** Message length */
|
|
uint64_t message_len;
|
|
|
|
/** Message type */
|
|
uint32_t message_type;
|
|
|
|
/** Is the message masked */
|
|
uint8_t masked : 1;
|
|
|
|
/** Did we receive Sec-WebSocket-Accept: field */
|
|
uint8_t sec_accept_present : 1;
|
|
|
|
/** Is Sec-WebSocket-Accept field correct */
|
|
uint8_t sec_accept_ok : 1;
|
|
|
|
/** Did we receive all from peer during HTTP handshake */
|
|
uint8_t all_received : 1;
|
|
|
|
/** Header received */
|
|
uint8_t header_received : 1;
|
|
};
|
|
|
|
/**
|
|
* @brief Disconnect the Websocket.
|
|
*
|
|
* @param sock Websocket id returned by websocket_connect() call.
|
|
*
|
|
* @return 0 if ok, <0 if error
|
|
*/
|
|
int websocket_disconnect(int sock);
|
|
|
|
/**
|
|
* @typedef websocket_context_cb_t
|
|
* @brief Callback used while iterating over websocket contexts
|
|
*
|
|
* @param context A valid pointer on current websocket context
|
|
* @param user_data A valid pointer on some user data or NULL
|
|
*/
|
|
typedef void (*websocket_context_cb_t)(struct websocket_context *ctx,
|
|
void *user_data);
|
|
|
|
/**
|
|
* @brief Iterate over websocket context. This is mainly used by net-shell
|
|
* to show information about websockets.
|
|
*
|
|
* @param cb Websocket context callback
|
|
* @param user_data Caller specific data.
|
|
*/
|
|
void websocket_context_foreach(websocket_context_cb_t cb, void *user_data);
|