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/*
Authors:
Jakub Hrozek <jhrozek@redhat.com>
Copyright (C) 2012 Red Hat
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 <http://www.gnu.org/licenses/>.
*/
#include <talloc.h>
#include "util/util.h"
#include "util/crypto/nss/nss_util.h"
#include "util/crypto/sss_crypto.h"
#include <base64.h>
/* NSS wraps b64 encoded buffers with CRLF automatically after 64 chars. This
* function strips the CRLF double-chars. The buffer can be decoded with plain
* NSS calls */
char *sss_base64_encode(TALLOC_CTX *mem_ctx,
const unsigned char *inbuf,
size_t inbufsize)
{
int ret;
char *b64encoded = NULL;
int i, j, b64size;
char *outbuf;
/* initialize NSS if needed */
ret = nspr_nss_init();
if (ret != EOK) {
return NULL;
}
b64encoded = BTOA_DataToAscii(inbuf, inbufsize);
if (!b64encoded) return NULL;
b64size = strlen(b64encoded) + 1;
outbuf = talloc_array(mem_ctx, char, b64size);
if (outbuf == NULL) {
PORT_Free(b64encoded);
return NULL;
}
for (i=0, j=0; i < b64size; i++) {
if (b64encoded[i] == '\n' || b64encoded[i] == '\r') {
continue;
}
outbuf[j++] = b64encoded[i]; /* will also copy the trailing \0 char */
}
PORT_Free(b64encoded);
return outbuf;
}
unsigned char *sss_base64_decode(TALLOC_CTX *mem_ctx,
const char *inbuf,
size_t *outbufsize)
{
int ret;
unsigned char *b64decoded = NULL;
unsigned int size;
unsigned char *outbuf;
/* initialize NSS if needed */
ret = nspr_nss_init();
if (ret != EOK) {
return NULL;
}
b64decoded = ATOB_AsciiToData(inbuf, &size);
if (!b64decoded) return NULL;
outbuf = talloc_memdup(mem_ctx, b64decoded, size);
PORT_Free(b64decoded);
if (!outbuf) return NULL;
*outbufsize = size;
return outbuf;
}
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