Porting uuencode/uudecode from NetBSD
Lionel: I fixed small mistakes in the mi file, typos, missing keywords,
and whitespace fixes.
Change-Id: If0c04b923af328838f2d0950e189bf28995bc0f0
This commit is contained in:
Sky Liu
202
usr.bin/uuencode/uuencode.c
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202
usr.bin/uuencode/uuencode.c
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@@ -0,0 +1,202 @@
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/* $NetBSD: uuencode.c,v 1.16 2014/09/06 18:58:35 dholland Exp $ */
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/*-
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. 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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* 3. 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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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1983, 1993\
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The Regents of the University of California. All rights reserved.");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)uuencode.c 8.2 (Berkeley) 4/2/94";
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#else
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__RCSID("$NetBSD: uuencode.c,v 1.16 2014/09/06 18:58:35 dholland Exp $");
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#endif
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#endif /* not lint */
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/*
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* uuencode [input] output
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*
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* Encode a file so it can be mailed to a remote system.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <netinet/in.h>
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#include <err.h>
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#include <errno.h>
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#include <locale.h>
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#include <resolv.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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static void encode(void);
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static void base64_encode(void);
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__dead static void usage(void);
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int
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main(int argc, char *argv[])
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{
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struct stat sb;
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int base64, ch, mode;
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mode = 0;
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base64 = 0;
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setlocale(LC_ALL, "");
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setprogname(argv[0]);
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while ((ch = getopt(argc, argv, "m")) != -1) {
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switch(ch) {
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case 'm':
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base64 = 1;
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break;
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default:
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usage();
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}
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}
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argv += optind;
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argc -= optind;
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switch(argc) {
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case 2: /* optional first argument is input file */
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if (!freopen(*argv, "r", stdin) || fstat(fileno(stdin), &sb))
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err(1, "%s", *argv);
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#define RWX (S_IRWXU|S_IRWXG|S_IRWXO)
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mode = sb.st_mode & RWX;
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++argv;
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break;
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case 1:
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#define RW (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
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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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usage();
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}
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if (base64) {
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(void)printf("begin-base64 %o %s\n", mode, *argv);
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base64_encode();
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(void)printf("====\n");
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} else {
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(void)printf("begin %o %s\n", mode, *argv);
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encode();
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(void)printf("end\n");
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}
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if (ferror(stdout))
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err(1, "write error");
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exit(0);
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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(c) ((c) ? ((c) & 077) + ' ': '`')
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/*
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* copy from in to out, encoding in base64 as you go along.
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*/
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static void
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base64_encode(void)
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{
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/*
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* Output must fit into 80 columns, chunks come in 4, leave 1.
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*/
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#define GROUPS ((70 / 4) - 1)
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unsigned char buf[3];
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char buf2[sizeof(buf) * 2 + 1];
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size_t n;
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int rv, sequence;
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sequence = 0;
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while ((n = fread(buf, 1, sizeof(buf), stdin))) {
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++sequence;
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rv = b64_ntop(buf, n, buf2, (sizeof(buf2) / sizeof(buf2[0])));
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if (rv == -1)
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errx(1, "b64_ntop: error encoding base64");
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printf("%s%s", buf2, (sequence % GROUPS) ? "" : "\n");
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}
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if (sequence % GROUPS)
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printf("\n");
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}
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/*
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* copy from in to out, encoding as you go along.
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*/
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static void
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encode(void)
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{
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int ch, n;
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char *p;
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char buf[80];
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while ((n = fread(buf, 1, 45, stdin)) > 0) {
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ch = ENC(n);
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if (putchar(ch) == EOF)
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break;
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for (p = buf; n > 0; 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 (putchar('\n') == EOF)
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break;
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}
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if (ferror(stdin))
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err(1, "read error.");
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ch = ENC('\0');
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(void)putchar(ch);
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(void)putchar('\n');
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}
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static void
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usage(void)
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{
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(void)fprintf(stderr,
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"usage: %s [-m] [inputfile] headername > encodedfile\n",
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getprogname());
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exit(1);
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}
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