diff options
Diffstat (limited to 'coreutils/uuencode.c')
| -rw-r--r-- | coreutils/uuencode.c | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/coreutils/uuencode.c b/coreutils/uuencode.c new file mode 100644 index 000000000..91136b3e6 --- /dev/null +++ b/coreutils/uuencode.c @@ -0,0 +1,244 @@ +/* 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; +} |