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