crypto/openssh-3.8.1p1/uuencode.c

   1 /*
   2  * Copyright (c) 2000 Markus Friedl.  All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  14  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  15  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  16  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  17  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  18  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  19  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  20  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  22  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  23  */
  24
  25 #include "includes.h"
  26 RCSID("$OpenBSD: uuencode.c,v 1.17 2003/11/10 16:23:41 jakob Exp $");
  27
  28 #include "xmalloc.h"
  29 #include "uuencode.h"
  30
  31 int
  32 uuencode(const u_char *src, u_int srclength,
  33     char *target, size_t targsize)
  34 {
  35         return __b64_ntop(src, srclength, target, targsize);
  36 }
  37
  38 int
  39 uudecode(const char *src, u_char *target, size_t targsize)
  40 {
  41         int len;
  42         char *encoded, *p;
  43
  44         /* copy the 'readonly' source */
  45         encoded = xstrdup(src);
  46         /* skip whitespace and data */
  47         for (p = encoded; *p == ' ' || *p == '\t'; p++)
  48                 ;
  49         for (; *p != '\0' && *p != ' ' && *p != '\t'; p++)
  50                 ;
  51         /* and remove trailing whitespace because __b64_pton needs this */
  52         *p = '\0';
  53         len = __b64_pton(encoded, target, targsize);
  54         xfree(encoded);
  55         return len;
  56 }
  57
  58 void
  59 dump_base64(FILE *fp, u_char *data, u_int len)
  60 {
  61         char *buf = xmalloc(2*len);
  62         int i, n;
  63
  64         n = uuencode(data, len, buf, 2*len);
  65         for (i = 0; i < n; i++) {
  66                 fprintf(fp, "%c", buf[i]);
  67                 if (i % 70 == 69)
  68                         fprintf(fp, "\n");
  69         }
  70         if (i % 70 != 69)
  71                 fprintf(fp, "\n");
  72         xfree(buf);
  73 }