source: trunk/third/openssh/uuencode.c @ 18759

/*
 * Copyright (c) 2000 Markus Friedl.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "includes.h"
RCSID("$OpenBSD: uuencode.c,v 1.16 2002/09/09 14:54:15 markus Exp $");

#include "xmalloc.h"
#include "uuencode.h"

int
uuencode(u_char *src, u_int srclength,
    char *target, size_t targsize)
{
        return __b64_ntop(src, srclength, target, targsize);
}

int
uudecode(const char *src, u_char *target, size_t targsize)
{
        int len;
        char *encoded, *p;

        /* copy the 'readonly' source */
        encoded = xstrdup(src);
        /* skip whitespace and data */
        for (p = encoded; *p == ' ' || *p == '\t'; p++)
                ;
        for (; *p != '\0' && *p != ' ' && *p != '\t'; p++)
                ;
        /* and remove trailing whitespace because __b64_pton needs this */
        *p = '\0';
        len = __b64_pton(encoded, target, targsize);
        xfree(encoded);
        return len;
}

void
dump_base64(FILE *fp, u_char *data, u_int len)
{
        char *buf = xmalloc(2*len);
        int i, n;

        n = uuencode(data, len, buf, 2*len);
        for (i = 0; i < n; i++) {
                fprintf(fp, "%c", buf[i]);
                if (i % 70 == 69)
                        fprintf(fp, "\n");
        }
        if (i % 70 != 69)
                fprintf(fp, "\n");
        xfree(buf);
}