1/* vi: set sw=4 ts=4: */
2/*
3 *  Copyright (C) 2000 by Glenn McGrath
4 *
5 *  based on the function base64_encode from http.c in wget v1.6
6 *  Copyright (C) 1995, 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
7 *
8 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
9 */
10
11#include "libbb.h"
12
13enum {
14	SRC_BUF_SIZE = 45,  /* This *MUST* be a multiple of 3 */
15	DST_BUF_SIZE = 4 * ((SRC_BUF_SIZE + 2) / 3),
16};
17
18int uuencode_main(int argc, char **argv);
19int uuencode_main(int argc, char **argv)
20{
21	struct stat stat_buf;
22	int src_fd = STDIN_FILENO;
23	const char *tbl;
24	mode_t mode;
25	char src_buf[SRC_BUF_SIZE];
26	char dst_buf[DST_BUF_SIZE + 1];
27
28	tbl = bb_uuenc_tbl_std;
29	mode = 0666 & ~umask(0666);
30	opt_complementary = "-1:?2"; /* must have 1 or 2 args */
31	if (getopt32(argv, "m")) {
32		tbl = bb_uuenc_tbl_base64;
33	}
34	argv += optind;
35	if (argc == optind + 2) {
36		src_fd = xopen(*argv, O_RDONLY);
37		fstat(src_fd, &stat_buf);
38		mode = stat_buf.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
39		argv++;
40	}
41
42	printf("begin%s %o %s", tbl == bb_uuenc_tbl_std ? "" : "-base64", mode, *argv);
43	while (1) {
44		size_t size = full_read(src_fd, src_buf, SRC_BUF_SIZE);
45		if (!size)
46			break;
47		if ((ssize_t)size < 0)
48			bb_perror_msg_and_die(bb_msg_read_error);
49		/* Encode the buffer we just read in */
50		bb_uuencode(dst_buf, src_buf, size, tbl);
51		putchar('\n');
52		if (tbl == bb_uuenc_tbl_std) {
53			putchar(tbl[size]);
54		}
55		fflush(stdout);
56		xwrite(STDOUT_FILENO, dst_buf, 4 * ((size + 2) / 3));
57	}
58	printf(tbl == bb_uuenc_tbl_std ? "\n`\nend\n" : "\n====\n");
59
60	fflush_stdout_and_exit(EXIT_SUCCESS);
61}
62