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uuencode-1.0
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uuencode.c
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C/C++ Source or Header
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1993-08-23
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233 lines
/*
* Copyright (c) 1983 Regents of the University of California.
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*/
/* Reworked to GNU style by Ian Lance Taylor, ian@airs.com, August 93. */
/*
* uuencode [input] output
*
* Encode a file so it can be mailed to a remote system.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include "getopt.h"
/* Get definitions for the file permission bits. */
#ifndef S_IRWXU
#define S_IRWXU 0700
#endif
#ifndef S_IRUSR
#define S_IRUSR 0400
#endif
#ifndef S_IWUSR
#define S_IWUSR 0200
#endif
#ifndef S_IXUSR
#define S_IXUSR 0100
#endif
#ifndef S_IRWXG
#define S_IRWXG 0070
#endif
#ifndef S_IRGRP
#define S_IRGRP 0040
#endif
#ifndef S_IWGRP
#define S_IWGRP 0020
#endif
#ifndef S_IXGRP
#define S_IXGRP 0010
#endif
#ifndef S_IRWXO
#define S_IRWXO 0007
#endif
#ifndef S_IROTH
#define S_IROTH 0004
#endif
#ifndef S_IWOTH
#define S_IWOTH 0002
#endif
#ifndef S_IXOTH
#define S_IXOTH 0001
#endif
#define RW (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)
static struct option longopts[] =
{
{ "version", 0, 0, 'v' },
{ "help", 0, 0, 'h' },
{ NULL, 0, 0, 0 }
};
#if __STDC__
static void encode (void);
static void usage (FILE *, int);
#else
static void encode ();
static void usage ();
#endif
extern char version[];
static char *program_name;
int
main (argc, argv)
int argc;
char **argv;
{
int opt;
struct stat sb;
int mode;
program_name = argv[0];
while ((opt = getopt_long (argc, argv, "hv", longopts, (int *) NULL))
!= EOF)
{
switch (opt)
{
case 'h':
printf ("Encode a file in a seven bit format\n");
usage (stdout, 0);
case 'v':
printf ("%s\n", version);
exit (0);
case 0:
break;
default:
usage (stderr, 1);
}
}
switch (argc - optind)
{
case 2: /* optional first argument is input file */
if (! freopen (argv[optind], "r", stdin)
|| fstat (fileno (stdin), &sb))
{
fprintf (stderr, "%s:", program_name);
perror (argv[optind]);
exit(1);
}
mode = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
++optind;
break;
case 1:
mode = RW & ~umask (RW);
break;
case 0:
default:
usage (stderr, 1);
}
#if S_IRWXU != 0700
#error Must translate mode argument
#endif
printf ("begin %o %s\n", mode, argv[optind]);
encode ();
printf ("end\n");
if (ferror (stdout))
{
fprintf (stderr, "uuencode: write error\n");
exit (1);
}
exit (0);
}
/* ENC is the basic 1 character encoding function to make a char printing */
#define ENC(c) ((c) ? ((c) & 077) + ' ': '`')
/*
* copy from in to out, encoding as you go along.
*/
static void
encode ()
{
register int ch, n;
register char *p;
char buf[80];
while ((n = fread (buf, 1, 45, stdin)) != 0)
{
ch = ENC (n);
if (putchar (ch) == EOF)
break;
for (p = buf; n > 0; n -= 3, p += 3)
{
ch = *p >> 2;
ch = ENC (ch);
if (putchar (ch) == EOF)
break;
ch = ((*p << 4) & 060) | ((p[1] >> 4) & 017);
ch = ENC (ch);
if (putchar (ch) == EOF)
break;
ch = ((p[1] << 2) & 074) | ((p[2] >> 6) & 03);
ch = ENC (ch);
if (putchar (ch) == EOF)
break;
ch = p[2] & 077;
ch = ENC (ch);
if (putchar (ch) == EOF)
break;
}
if (putchar ('\n') == EOF)
break;
}
if (ferror (stdin))
{
fprintf (stderr, "uuencode: read error\n");
exit(1);
}
ch = ENC ('\0');
putchar (ch);
putchar ('\n');
}
static void
usage (f, status)
FILE *f;
int status;
{
fprintf (f, "Usage: %s [infile] remotefile\n", program_name);
exit (status);
}