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/* Output raw bytes, for libreswan
*
* Copyright (C) 2022 Andrew Cagney
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <https://www.gnu.org/licenses/gpl2.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include "lswlog.h"
#include "chunk.h"
#include "ttodata.h" /* for datatot() */
#include "passert.h"
#include "lswalloc.h"
void llog_base64_bytes(lset_t rc_flags,
const struct logger *logger,
const void *ptr, size_t size)
{
/*
* A byte is 8-bits, base64 uses 6-bits (2^6=64). Plus some
* for \0. Plus some extra for the trailing === and rounding.
*/
size_t base64_len = size * 8 / 6 + 1 + 10;
char *base64_ptr = alloc_things(char, base64_len, "base64");
/* size includes NUL */
size_t base64_size = datatot(ptr, size, 64, base64_ptr, base64_len);
/* BASE64_SIZE includes '\0' */
passert(base64_size <= base64_len);
passert(base64_size > 0);
shunk_t rest = shunk2(base64_ptr, base64_size - 1 /*drop NUL*/);
while (true) {
shunk_t line = hunk_slice(rest, 0, min((size_t)64, rest.len));
if (line.len == 0) break;
rest = hunk_slice(rest, line.len, rest.len);
llog(rc_flags, logger, PRI_SHUNK, pri_shunk(line));
}
pfree(base64_ptr);
}
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