external/bsd/bind/dist/lib/isccc/base64.c

   1 /*      $NetBSD: base64.c,v 1.5 2014/12/10 04:38:01 christos Exp $      */
   2
   3 /*
   4  * Portions Copyright (C) 2004, 2005, 2007, 2013  Internet Systems Consortium, Inc. ("ISC")
   5  * Portions Copyright (C) 2001  Internet Software Consortium.
   6  *
   7  * Permission to use, copy, modify, and/or distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice appear in all copies.
  10  *
  11  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NOMINUM DISCLAIMS ALL
  12  * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
  13  * OF MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY
  14  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  17  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  18  *
  19  * Portions Copyright (C) 2001  Nominum, Inc.
  20  *
  21  * Permission to use, copy, modify, and/or distribute this software for any
  22  * purpose with or without fee is hereby granted, provided that the above
  23  * copyright notice and this permission notice appear in all copies.
  24  *
  25  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NOMINUM DISCLAIMS ALL
  26  * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
  27  * OF MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY
  28  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  29  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  30  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  31  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  32  */
  33
  34 /* Id: base64.c,v 1.8 2007/08/28 07:20:43 tbox Exp  */
  35
  36 /*! \file */
  37
  38 #include <config.h>
  39
  40 #include <isc/base64.h>
  41 #include <isc/buffer.h>
  42 #include <isc/region.h>
  43 #include <isc/result.h>
  44
  45 #include <isccc/base64.h>
  46 #include <isccc/result.h>
  47 #include <isccc/util.h>
  48
  49 isc_result_t
  50 isccc_base64_encode(isccc_region_t *source, int wordlength,
  51                   const char *wordbreak, isccc_region_t *target)
  52 {
  53         isc_region_t sr;
  54         isc_buffer_t tb;
  55         isc_result_t result;
  56
  57         sr.base = source->rstart;
  58         sr.length = (unsigned int)(source->rend - source->rstart);
  59         isc_buffer_init(&tb, target->rstart,
  60                         (unsigned int)(target->rend - target->rstart));
  61
  62         result = isc_base64_totext(&sr, wordlength, wordbreak, &tb);
  63         if (result != ISC_R_SUCCESS)
  64                 return (result);
  65         source->rstart = source->rend;
  66         target->rstart = isc_buffer_used(&tb);
  67         return (ISC_R_SUCCESS);
  68 }
  69
  70 isc_result_t
  71 isccc_base64_decode(const char *cstr, isccc_region_t *target) {
  72         isc_buffer_t b;
  73         isc_result_t result;
  74
  75         isc_buffer_init(&b, target->rstart,
  76                         (unsigned int)(target->rend - target->rstart));
  77         result = isc_base64_decodestring(cstr, &b);
  78         if (result != ISC_R_SUCCESS)
  79                 return (result);
  80         target->rstart = isc_buffer_used(&b);
  81         return (ISC_R_SUCCESS);
  82 }