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/*
* ngtcp2
*
* Copyright (c) 2017 ngtcp2 contributors
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef NGTCP2_STR_H
#define NGTCP2_STR_H
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <ngtcp2/ngtcp2.h>
void *ngtcp2_cpymem(void *dest, const void *src, size_t n);
/*
* ngtcp2_setmem writes a string of length |n| consisting only |b| to
* the buffer pointed by |dest|. It returns dest + n;
*/
uint8_t *ngtcp2_setmem(uint8_t *dest, uint8_t b, size_t n);
/*
* ngtcp2_get_bytes copies |n| bytes from |src| to |dest|, and returns
* |src| + |n|.
*/
const void *ngtcp2_get_bytes(void *dest, const void *src, size_t n);
/*
* ngtcp2_encode_hex encodes |data| of length |len| in hex string. It
* writes additional NULL bytes at the end of the buffer. The buffer
* pointed by |dest| must have at least |len| * 2 + 1 bytes space.
* This function returns |dest|.
*/
uint8_t *ngtcp2_encode_hex(uint8_t *dest, const uint8_t *data, size_t len);
/*
* ngtcp2_encode_ipv4 encodes binary form IPv4 address stored in
* |addr| to human readable text form in the buffer pointed by |dest|.
* The capacity of buffer must have enough length to store a text form
* plus a terminating NULL byte. The resulting text form ends with
* NULL byte. The function returns |dest|.
*/
uint8_t *ngtcp2_encode_ipv4(uint8_t *dest, const uint8_t *addr);
/*
* ngtcp2_encode_ipv6 encodes binary form IPv6 address stored in
* |addr| to human readable text form in the buffer pointed by |dest|.
* The capacity of buffer must have enough length to store a text form
* plus a terminating NULL byte. The resulting text form ends with
* NULL byte. The function produces the canonical form of IPv6 text
* representation described in
* https://tools.ietf.org/html/rfc5952#section-4. The function
* returns |dest|.
*/
uint8_t *ngtcp2_encode_ipv6(uint8_t *dest, const uint8_t *addr);
/*
* ngtcp2_encode_printable_ascii encodes |data| of length |len| in
* |dest| in the following manner: printable ascii characters are
* copied as is. The other characters are converted to ".". It
* writes additional NULL bytes at the end of the buffer. |dest| must
* have at least |len| + 1 bytes. This function returns |dest|.
*/
char *ngtcp2_encode_printable_ascii(char *dest, const uint8_t *data,
size_t len);
/*
* ngtcp2_cmemeq returns nonzero if the first |n| bytes of the buffers
* pointed by |a| and |b| are equal. The comparison is done in a
* constant time manner.
*/
int ngtcp2_cmemeq(const uint8_t *a, const uint8_t *b, size_t n);
#endif /* NGTCP2_STR_H */
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