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Damien Miller447e3872009-03-06 00:58:39 +11001/* $OpenBSD: uuencode.c,v 1.25 2009/03/05 11:30:50 djm Exp $ */
Damien Millereba71ba2000-04-29 23:57:08 +10002/*
Damien Millere247cc42000-05-07 12:03:14 +10003 * Copyright (c) 2000 Markus Friedl. All rights reserved.
Damien Millere4340be2000-09-16 13:29:08 +11004 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Damien Millereba71ba2000-04-29 23:57:08 +100024 */
Damien Millere4340be2000-09-16 13:29:08 +110025
Damien Millereba71ba2000-04-29 23:57:08 +100026#include "includes.h"
Damien Millera10f5612002-09-12 09:49:15 +100027
Damien Miller8ec8c3e2006-07-10 20:35:38 +100028#include <sys/types.h>
Damien Miller8ec8c3e2006-07-10 20:35:38 +100029#include <netinet/in.h>
Damien Miller874bc482006-07-24 14:58:07 +100030#include <resolv.h>
Damien Millera7a73ee2006-08-05 11:37:59 +100031#include <stdio.h>
Damien Miller874bc482006-07-24 14:58:07 +100032
Damien Millereba71ba2000-04-29 23:57:08 +100033#include "xmalloc.h"
Ben Lindstrom70ea46a2001-02-10 23:30:16 +000034#include "uuencode.h"
Damien Millerbf7f4662000-06-23 10:16:38 +100035
Damien Miller447e3872009-03-06 00:58:39 +110036/*
37 * Encode binary 'src' of length 'srclength', writing base64-encoded text
38 * to 'target' of size 'targsize'. Will always nul-terminate 'target'.
39 * Returns the number of bytes stored in 'target' or -1 on error (inc.
40 * 'targsize' too small).
41 */
Damien Millereba71ba2000-04-29 23:57:08 +100042int
Damien Millerf58b58c2003-11-17 21:18:23 +110043uuencode(const u_char *src, u_int srclength,
Damien Millere247cc42000-05-07 12:03:14 +100044 char *target, size_t targsize)
Damien Millereba71ba2000-04-29 23:57:08 +100045{
Damien Millere247cc42000-05-07 12:03:14 +100046 return __b64_ntop(src, srclength, target, targsize);
Damien Millereba71ba2000-04-29 23:57:08 +100047}
48
Damien Miller447e3872009-03-06 00:58:39 +110049/*
50 * Decode base64-encoded 'src' into buffer 'target' of 'targsize' bytes.
51 * Will skip leading and trailing whitespace. Returns the number of bytes
52 * stored in 'target' or -1 on error (inc. targsize too small).
53 */
Damien Millereba71ba2000-04-29 23:57:08 +100054int
Ben Lindstrom46c16222000-12-22 01:43:59 +000055uudecode(const char *src, u_char *target, size_t targsize)
Damien Millereba71ba2000-04-29 23:57:08 +100056{
Damien Millere247cc42000-05-07 12:03:14 +100057 int len;
58 char *encoded, *p;
Damien Millereba71ba2000-04-29 23:57:08 +100059
Damien Millere247cc42000-05-07 12:03:14 +100060 /* copy the 'readonly' source */
61 encoded = xstrdup(src);
62 /* skip whitespace and data */
63 for (p = encoded; *p == ' ' || *p == '\t'; p++)
Damien Millereba71ba2000-04-29 23:57:08 +100064 ;
Damien Millere247cc42000-05-07 12:03:14 +100065 for (; *p != '\0' && *p != ' ' && *p != '\t'; p++)
66 ;
Ben Lindstrome45a2cb2002-02-26 18:07:26 +000067 /* and remove trailing whitespace because __b64_pton needs this */
Damien Millere247cc42000-05-07 12:03:14 +100068 *p = '\0';
69 len = __b64_pton(encoded, target, targsize);
70 xfree(encoded);
71 return len;
Damien Millereba71ba2000-04-29 23:57:08 +100072}
73
74void
Ben Lindstromc58ab022002-02-26 18:15:09 +000075dump_base64(FILE *fp, u_char *data, u_int len)
Damien Millereba71ba2000-04-29 23:57:08 +100076{
Damien Millerb3cdc222006-03-26 14:30:33 +110077 char *buf;
Damien Millereba71ba2000-04-29 23:57:08 +100078 int i, n;
Ben Lindstrom70ea46a2001-02-10 23:30:16 +000079
Damien Miller07d86be2006-03-26 14:19:21 +110080 if (len > 65536) {
81 fprintf(fp, "dump_base64: len > 65536\n");
82 return;
83 }
84 buf = xmalloc(2*len);
Damien Millere247cc42000-05-07 12:03:14 +100085 n = uuencode(data, len, buf, 2*len);
Damien Millereba71ba2000-04-29 23:57:08 +100086 for (i = 0; i < n; i++) {
87 fprintf(fp, "%c", buf[i]);
88 if (i % 70 == 69)
89 fprintf(fp, "\n");
90 }
91 if (i % 70 != 69)
92 fprintf(fp, "\n");
93 xfree(buf);
94}