contrib/bind-9.5.2/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
  47 isc_result_t
  48 isccc_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
  67 isc_result_t
  68 isccc_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 }