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/*
* Copyright (c) 2023 Andri Yngvason
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#pragma once
#include <stdint.h>
#include <stdbool.h>
#include <unistd.h>
#define WS_HEADER_MIN_SIZE 14
enum ws_opcode {
WS_OPCODE_CONT = 0,
WS_OPCODE_TEXT,
WS_OPCODE_BIN,
WS_OPCODE_CLOSE = 8,
WS_OPCODE_PING,
WS_OPCODE_PONG,
};
struct ws_frame_header {
bool fin;
enum ws_opcode opcode;
bool mask;
uint64_t payload_length;
uint8_t masking_key[4];
size_t header_length;
};
ssize_t ws_handshake(char* output, size_t output_maxlen, const char* input);
const char *ws_opcode_name(enum ws_opcode op);
bool ws_parse_frame_header(struct ws_frame_header* header,
const uint8_t* payload, size_t length);
void ws_apply_mask(const struct ws_frame_header* header,
uint8_t* restrict payload);
void ws_copy_payload(const struct ws_frame_header* header,
uint8_t* restrict dst, const uint8_t* restrict src, size_t len);
int ws_write_frame_header(uint8_t* dst, const struct ws_frame_header* header);
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