3 * $Id: base64.h,v 1.2 1999/05/18 21:45:27 mdw Exp $
5 * Base64 encoding and decoding
7 * (c) 1997 Straylight/Edgeware
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of the mLib utilities library.
14 * mLib is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU Library General Public License as
16 * published by the Free Software Foundation; either version 2 of the
17 * License, or (at your option) any later version.
19 * mLib is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU Library General Public License for more details.
24 * You should have received a copy of the GNU Library General Public
25 * License along with mLib; if not, write to the Free
26 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
30 /*----- Revision history --------------------------------------------------*
33 * Revision 1.2 1999/05/18 21:45:27 mdw
34 * Allow Base64 encode and decode of arbitrary rubbish.
36 * Revision 1.1 1999/05/17 20:35:00 mdw
37 * Base64 encoding and decoding support.
48 /*----- Header files ------------------------------------------------------*/
52 /*----- Data structures ---------------------------------------------------*/
54 typedef struct base64_ctx
{
55 unsigned long acc
; /* Accumulator for output data */
56 unsigned qsz
; /* Length of data queued */
57 unsigned lnlen
; /* Length of the current line */
58 const char *indent
; /* Newline-and-indent string */
59 unsigned maxline
; /* Maximum permitted line length */
62 /*----- Functions provided ------------------------------------------------*/
64 /* --- @base64_encode@ --- *
66 * Arguments: @base64_ctx *ctx@ = pointer to a context block
67 * @const void *p@ = pointer to a source buffer
68 * @size_t sz@ = size of the source buffer
69 * @dstr *d@ = pointer to destination string
73 * Use: Encodes a binary string in base64. To flush out the final
74 * few characters (if necessary), pass a null source pointer.
77 extern void base64_encode(base64_ctx */
*ctx*/
,
78 const void */
*p*/
, size_t /*sz*/,
81 /* --- @base64_decode@ --- *
83 * Arguments: @base64_ctx *ctx@ = pointer to a context block
84 * @const void *p@ = pointer to a source buffer
85 * @size_t sz@ = size of the source buffer
86 * @dstr *d@ = pointer to destination string
90 * Use: Decodes a binary string in base64. To flush out the final
91 * few characters (if necessary), pass a null source pointer.
94 extern void base64_decode(base64_ctx */
*ctx*/
,
95 const void */
*p*/
, size_t /*sz*/,
98 /* --- @base64_init@ --- *
100 * Arguments: @base64_ctx *ctx@ = pointer to context block to initialize
104 * Use: Initializes a base64 context properly.
107 extern void base64_init(base64_ctx */
*ctx*/
);
109 /*----- That's all, folks -------------------------------------------------*/