| /* uuencode.c -- uuencode utility. |
| * Copyright (C) 1994, 1995 Free Software Foundation, Inc. |
| * |
| * This product is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2, or (at your option) |
| * any later version. |
| * |
| * This product is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this product; see the file COPYING. If not, write to |
| * the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
| * 02111-1307, USA. |
| */ |
| |
| /* 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. */ |
| /* Hacked to work with BusyBox by Alfred M. Szmidt */ |
| |
| #include "internal.h" |
| |
| #include <stdio.h> |
| #include <errno.h> |
| #include <pwd.h> |
| |
| #define RW (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH) |
| |
| static void encode __P ((void)); |
| |
| /* Pointer to the translation table we currently use. */ |
| const char *trans_ptr; |
| |
| /* The two currently defined translation tables. The first is the |
| standard uuencoding, the second is base64 encoding. */ |
| const char uu_std[64] = { |
| '`', '!', '"', '#', '$', '%', '&', '\'', |
| '(', ')', '*', '+', ',', '-', '.', '/', |
| '0', '1', '2', '3', '4', '5', '6', '7', |
| '8', '9', ':', ';', '<', '=', '>', '?', |
| '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', |
| 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', |
| 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', |
| 'X', 'Y', 'Z', '[', '\\', ']', '^', '_' |
| }; |
| |
| const char uu_base64[64] = { |
| 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', |
| 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', |
| 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', |
| 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', |
| 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', |
| 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', |
| 'w', 'x', 'y', 'z', '0', '1', '2', '3', |
| '4', '5', '6', '7', '8', '9', '+', '/' |
| }; |
| |
| /* ENC is the basic 1 character encoding function to make a char printing. */ |
| #define ENC(Char) (trans_ptr[(Char) & 077]) |
| |
| /* Copy from IN to OUT, encoding as you go along. */ |
| static void encode() |
| { |
| register int ch, n; |
| char *p = NULL; |
| char buf[80]; |
| |
| while (1) { |
| n = 0; |
| do { |
| register int m = fread (buf, 1, 45 - n, stdin); |
| if (m == 0) |
| break; |
| n += m; |
| } |
| while (n < 45); |
| |
| if (n == 0) |
| break; |
| |
| if (trans_ptr == uu_std) |
| if (putchar (ENC (n)) == EOF) |
| break; |
| for (p = buf; n > 2; 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 (n != 0) |
| break; |
| |
| if (putchar ('\n') == EOF) |
| break; |
| } |
| |
| while (n != 0) { |
| char c1 = *p; |
| char c2 = n == 1 ? 0 : p[1]; |
| |
| ch = c1 >> 2; |
| ch = ENC (ch); |
| if (putchar (ch) == EOF) |
| break; |
| |
| ch = ((c1 << 4) & 060) | ((c2 >> 4) & 017); |
| ch = ENC (ch); |
| if (putchar (ch) == EOF) |
| break; |
| |
| if (n == 1) |
| ch = trans_ptr == uu_std ? ENC ('\0') : '='; |
| else { |
| ch = (c2 << 2) & 074; |
| ch = ENC (ch); |
| } |
| if (putchar (ch) == EOF) |
| break; |
| ch = trans_ptr == uu_std ? ENC ('\0') : '='; |
| if (putchar (ch) == EOF) |
| break; |
| putchar ('\n'); |
| break; |
| } |
| |
| if (ferror (stdin)) |
| errorMsg("Read error\n"); |
| |
| if (trans_ptr == uu_std) { |
| putchar (ENC ('\0')); |
| putchar ('\n'); |
| } |
| } |
| |
| static const char uuencode_usage[] = |
| "uuencode [OPTION] [INFILE] REMOTEFILE\n" |
| #ifndef BB_FEATURE_TRIVIAL_HELP |
| "\nUuencode a file.\n\n" |
| "Options:\n" |
| "\t-m\tuse base64 encoding as of RFC1521\n" |
| #endif |
| ; |
| |
| int uuencode_main (int argc, |
| char **argv) |
| { |
| int opt; |
| struct stat sb; |
| int mode; |
| |
| trans_ptr = uu_std; /* Standard encoding is old uu format */ |
| |
| /* Parse any options */ |
| while ((opt = getopt (argc, argv, "m")) != EOF) { |
| switch (opt) { |
| case 'm': |
| trans_ptr = uu_base64; |
| break; |
| |
| case 0: |
| break; |
| |
| default: |
| usage(uuencode_usage); |
| } |
| } |
| |
| switch (argc - optind) { |
| case 2: |
| /* Optional first argument is input file. */ |
| if (!freopen (argv[optind], "r", stdin) || fstat (fileno (stdin), &sb)) { |
| errorMsg("uuencode: %s: %s\n", argv[optind], strerror(errno)); |
| exit FALSE; |
| } |
| mode = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); |
| optind++; |
| break; |
| |
| case 1: |
| mode = RW & ~umask (RW); |
| break; |
| |
| case 0: |
| default: |
| usage(uuencode_usage); |
| } |
| |
| printf("begin%s %o %s\n", trans_ptr == uu_std ? "" : "-base64", |
| mode, argv[optind]); |
| encode(); |
| printf(trans_ptr == uu_std ? "end\n" : "====\n"); |
| if (ferror (stdout)) { |
| errorMsg("Write error\n"); |
| exit FALSE; |
| } |
| exit TRUE; |
| } |