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238 lines
6.6 KiB
C
238 lines
6.6 KiB
C
/* uuencode.c -- uuencode utility.
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* Copyright (C) 1994, 1995 Free Software Foundation, Inc.
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*
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* This product is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This product is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this product; see the file COPYING. If not, write to
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* the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* Original copyright notice is retained at the end of this file.
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*/
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/* Reworked to GNU style by Ian Lance Taylor, ian@airs.com, August 93. */
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/* Hacked to work with BusyBox by Alfred M. Szmidt */
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#include <stdio.h>
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#include <errno.h>
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#include <getopt.h>
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#include <stdlib.h>
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#include "busybox.h"
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#define RW (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)
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static void encode __P ((void));
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/* Pointer to the translation table we currently use. */
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static const char *trans_ptr;
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/* The two currently defined translation tables. The first is the
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standard uuencoding, the second is base64 encoding. */
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static const char uu_std[64] = {
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'`', '!', '"', '#', '$', '%', '&', '\'',
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'(', ')', '*', '+', ',', '-', '.', '/',
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'0', '1', '2', '3', '4', '5', '6', '7',
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'8', '9', ':', ';', '<', '=', '>', '?',
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'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
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'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
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'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
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'X', 'Y', 'Z', '[', '\\', ']', '^', '_'
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};
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static const char uu_base64[64] = {
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'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
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'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
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'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
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'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
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'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
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'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
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'w', 'x', 'y', 'z', '0', '1', '2', '3',
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'4', '5', '6', '7', '8', '9', '+', '/'
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};
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/* ENC is the basic 1 character encoding function to make a char printing. */
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#define ENC(Char) (trans_ptr[(Char) & 077])
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/* Copy from IN to OUT, encoding as you go along. */
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static void encode()
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{
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register int ch, n;
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char *p = NULL;
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char buf[80];
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while (1) {
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n = 0;
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do {
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register int m = fread (buf, 1, 45 - n, stdin);
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if (m == 0)
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break;
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n += m;
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}
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while (n < 45);
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if (n == 0)
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break;
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if (trans_ptr == uu_std)
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if (putchar (ENC (n)) == EOF)
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break;
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for (p = buf; n > 2; n -= 3, p += 3) {
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ch = *p >> 2;
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ch = ENC (ch);
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if (putchar (ch) == EOF)
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break;
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ch = ((*p << 4) & 060) | ((p[1] >> 4) & 017);
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ch = ENC (ch);
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if (putchar (ch) == EOF)
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break;
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ch = ((p[1] << 2) & 074) | ((p[2] >> 6) & 03);
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ch = ENC (ch);
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if (putchar (ch) == EOF)
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break;
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ch = p[2] & 077;
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ch = ENC (ch);
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if (putchar (ch) == EOF)
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break;
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}
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if (n != 0)
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break;
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if (putchar ('\n') == EOF)
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break;
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}
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while (n != 0) {
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char c1 = *p;
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char c2 = n == 1 ? 0 : p[1];
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ch = c1 >> 2;
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ch = ENC (ch);
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if (putchar (ch) == EOF)
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break;
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ch = ((c1 << 4) & 060) | ((c2 >> 4) & 017);
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ch = ENC (ch);
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if (putchar (ch) == EOF)
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break;
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if (n == 1)
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ch = trans_ptr == uu_std ? ENC ('\0') : '=';
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else {
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ch = (c2 << 2) & 074;
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ch = ENC (ch);
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}
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if (putchar (ch) == EOF)
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break;
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ch = trans_ptr == uu_std ? ENC ('\0') : '=';
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if (putchar (ch) == EOF)
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break;
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putchar ('\n');
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break;
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}
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if (ferror (stdin))
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error_msg("Read error");
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if (trans_ptr == uu_std) {
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putchar (ENC ('\0'));
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putchar ('\n');
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}
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}
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int uuencode_main (int argc,
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char **argv)
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{
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int opt;
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struct stat sb;
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int mode;
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trans_ptr = uu_std; /* Standard encoding is old uu format */
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/* Parse any options */
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while ((opt = getopt (argc, argv, "m")) > 0) {
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switch (opt) {
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case 'm':
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trans_ptr = uu_base64;
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break;
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default:
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show_usage();
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}
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}
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switch (argc - optind) {
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case 2:
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/* Optional first argument is input file. */
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if (!freopen (argv[optind], "r", stdin) || fstat (fileno (stdin), &sb)) {
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perror_msg("%s", argv[optind]);
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return EXIT_FAILURE;
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}
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mode = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
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optind++;
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break;
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case 1:
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mode = RW & ~umask (RW);
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break;
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case 0:
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default:
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show_usage();
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}
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printf("begin%s %o %s\n", trans_ptr == uu_std ? "" : "-base64",
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mode, argv[optind]);
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encode();
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printf(trans_ptr == uu_std ? "end\n" : "====\n");
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if (ferror (stdout)) {
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error_msg("Write error");
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return EXIT_FAILURE;
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}
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return EXIT_SUCCESS;
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}
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/* Copyright (c) 1983 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
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* ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
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*
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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