1 /* $NetBSD: base64.c,v 1.7 2025/01/26 16:25:44 christos Exp $ */ 2 3 /* 4 * Copyright (C) Internet Systems Consortium, Inc. ("ISC") 5 * 6 * SPDX-License-Identifier: MPL-2.0 AND ISC 7 * 8 * This Source Code Form is subject to the terms of the Mozilla Public 9 * License, v. 2.0. If a copy of the MPL was not distributed with this 10 * file, you can obtain one at https://mozilla.org/MPL/2.0/. 11 * 12 * See the COPYRIGHT file distributed with this work for additional 13 * information regarding copyright ownership. 14 */ 15 16 /* 17 * 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 /*! \file */ 33 34 #include <isc/base64.h> 35 #include <isc/buffer.h> 36 #include <isc/region.h> 37 #include <isc/result.h> 38 39 #include <isccc/base64.h> 40 #include <isccc/util.h> 41 42 isc_result_t 43 isccc_base64_encode(isccc_region_t *source, int wordlength, 44 const char *wordbreak, isccc_region_t *target) { 45 isc_region_t sr; 46 isc_buffer_t tb; 47 isc_result_t result; 48 49 sr.base = source->rstart; 50 sr.length = (unsigned int)(source->rend - source->rstart); 51 isc_buffer_init(&tb, target->rstart, 52 (unsigned int)(target->rend - target->rstart)); 53 54 result = isc_base64_totext(&sr, wordlength, wordbreak, &tb); 55 if (result != ISC_R_SUCCESS) { 56 return result; 57 } 58 source->rstart = source->rend; 59 target->rstart = isc_buffer_used(&tb); 60 return ISC_R_SUCCESS; 61 } 62 63 isc_result_t 64 isccc_base64_decode(const char *cstr, isccc_region_t *target) { 65 isc_buffer_t b; 66 isc_result_t result; 67 68 isc_buffer_init(&b, target->rstart, 69 (unsigned int)(target->rend - target->rstart)); 70 result = isc_base64_decodestring(cstr, &b); 71 if (result != ISC_R_SUCCESS) { 72 return result; 73 } 74 target->rstart = isc_buffer_used(&b); 75 return ISC_R_SUCCESS; 76 } 77