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/*
(c) Copyright 2012 - 2018 Anton Sviridenko
https://picapica.im
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 3 of the License, or
(at your option) any later version.
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.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "PICA_id.h"
#include <openssl/bio.h>
#include <string.h>
int PICA_id_from_X509(X509 *x, unsigned char *id)
{
unsigned char *der = NULL;
int len;
len = i2d_X509(x, &der);
if (len <= 0)
{
return 0;
}
SHA224(der, len, id);
OPENSSL_free(der);
return 1;
}
unsigned char *PICA_id_from_base64(const unsigned char *buf, unsigned char *id)
{
BIO *biomem, *b64;
static char localidbuf[PICA_ID_SIZE];
int inlen, bread = 0;
unsigned char *idbuf = id;
b64 = BIO_new(BIO_f_base64());
BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
biomem = BIO_new_mem_buf(buf, -1);
biomem = BIO_push(b64, biomem);
if (idbuf == NULL)
idbuf = localidbuf;
bread = BIO_read(biomem, idbuf, PICA_ID_SIZE);
if (bread != PICA_ID_SIZE)
idbuf = NULL;
BIO_free_all(biomem);
return idbuf;
}
char *PICA_id_to_base64(const unsigned char *id, char *buf)
{
BIO *biomem, *b64;
static char localbuf[PICA_ID_SIZE * 2];
char *sourcebuf, *outputbuf = buf;
long b64len;
b64 = BIO_new(BIO_f_base64());
biomem = BIO_new(BIO_s_mem());
biomem = BIO_push(b64, biomem);
BIO_write(biomem, id, PICA_ID_SIZE);
BIO_flush(biomem);
b64len = BIO_get_mem_data(biomem, &sourcebuf);
if (outputbuf == NULL)
outputbuf = localbuf;
memcpy(outputbuf, sourcebuf, b64len);
*strchr(outputbuf, '\n') = '\0';
outputbuf[b64len] = '\0';
BIO_free_all(biomem);
return outputbuf;
}
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