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/* vim: set tabstop=8 shiftwidth=4 softtabstop=4 expandtab smarttab colorcolumn=80: */
/*
* Copyright 2016 Red Hat, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define _GNU_SOURCE
#include "misc.h"
#include "hsh.h"
#include <jose/b64.h>
#include "hooks.h"
json_t *
hsh(jose_cfg_t *cfg, const char *alg, const void *data, size_t dlen)
{
jose_io_auto_t *_hsh = NULL;
jose_io_auto_t *enc = NULL;
jose_io_auto_t *buf = NULL;
char b[1024] = {};
size_t l = sizeof(b);
buf = jose_io_buffer(cfg, b, &l);
enc = jose_b64_enc_io(buf);
_hsh = hsh_io(cfg, alg, enc);
if (!buf || !enc || !_hsh || !_hsh->feed(_hsh, data, dlen) || !_hsh->done(_hsh))
return NULL;
return json_stringn(b, l);
}
jose_io_t *
hsh_io(jose_cfg_t *cfg, const char *alg, jose_io_t *next)
{
const jose_hook_alg_t *a = NULL;
a = jose_hook_alg_find(JOSE_HOOK_ALG_KIND_HASH, alg);
if (!a)
return NULL;
return a->hash.hsh(a, cfg, next);
}
size_t
hsh_buf(jose_cfg_t *cfg, const char *alg,
const void *data, size_t dlen, void *hash, size_t hlen)
{
const jose_hook_alg_t *a = NULL;
jose_io_auto_t *_hsh = NULL;
jose_io_auto_t *buf = NULL;
a = jose_hook_alg_find(JOSE_HOOK_ALG_KIND_HASH, alg);
if (!a)
return SIZE_MAX;
if (!hash || hlen == 0)
return a->hash.size;
if (hlen < a->hash.size)
return SIZE_MAX;
buf = jose_io_buffer(cfg, hash, &hlen);
_hsh = a->hash.hsh(a, cfg, buf);
if (!buf || !_hsh || !_hsh->feed(_hsh, data, dlen) || !_hsh->done(_hsh))
return SIZE_MAX;
return hlen;
}
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