/contrib/bind9/lib/isccc/base64.c

 1/*
 2 * Portions Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
 3 * Portions Copyright (C) 2001  Internet Software Consortium.
 4 *
 5 * Permission to use, copy, modify, and/or distribute this software for any
 6 * purpose with or without fee is hereby granted, provided that the above
 7 * copyright notice and this permission notice appear in all copies.
 8 *
 9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NOMINUM DISCLAIMS ALL
10 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
11 * OF MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY
12 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 *
17 * Portions Copyright (C) 2001  Nominum, Inc.
18 *
19 * Permission to use, copy, modify, and/or distribute this software for any
20 * purpose with or without fee is hereby granted, provided that the above
21 * copyright notice and this permission notice appear in all copies.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NOMINUM DISCLAIMS ALL
24 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY
26 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
27 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
28 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
29 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
30 */
31
32/* $Id: base64.c,v 1.8 2007/08/28 07:20:43 tbox Exp $ */
33
34/*! \file */
35
36#include <config.h>
37
38#include <isc/base64.h>
39#include <isc/buffer.h>
40#include <isc/region.h>
41#include <isc/result.h>
42
43#include <isccc/base64.h>
44#include <isccc/result.h>
45#include <isccc/util.h>
46
47isc_result_t
48isccc_base64_encode(isccc_region_t *source, int wordlength,
49		  const char *wordbreak, isccc_region_t *target)
50{
51	isc_region_t sr;
52	isc_buffer_t tb;
53	isc_result_t result;
54
55	sr.base = source->rstart;
56	sr.length = source->rend - source->rstart;
57	isc_buffer_init(&tb, target->rstart, target->rend - target->rstart);
58
59	result = isc_base64_totext(&sr, wordlength, wordbreak, &tb);
60	if (result != ISC_R_SUCCESS)
61		return (result);
62	source->rstart = source->rend;
63	target->rstart = isc_buffer_used(&tb);
64	return (ISC_R_SUCCESS);
65}
66
67isc_result_t
68isccc_base64_decode(const char *cstr, isccc_region_t *target) {
69	isc_buffer_t b;
70	isc_result_t result;
71
72	isc_buffer_init(&b, target->rstart, target->rend - target->rstart);
73	result = isc_base64_decodestring(cstr, &b);
74	if (result != ISC_R_SUCCESS)
75		return (result);
76	target->rstart = isc_buffer_used(&b);
77	return (ISC_R_SUCCESS);
78}