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 source tree.
9 */
10 //config:config UUENCODE
11 //config: bool "uuencode (4.4 kb)"
12 //config: default y
13 //config: help
14 //config: uuencode is used to uuencode a file.
15
16 //applet:IF_UUENCODE(APPLET(uuencode, BB_DIR_USR_BIN, BB_SUID_DROP))
17
18 //kbuild:lib-$(CONFIG_UUENCODE) += uuencode.o
19
20 //usage:#define uuencode_trivial_usage
21 //usage: "[-m] [FILE] STORED_FILENAME"
22 //usage:#define uuencode_full_usage "\n\n"
23 //usage: "Uuencode FILE (or stdin) to stdout\n"
24 //usage: "\n -m Use base64 encoding per RFC1521"
25 //usage:
26 //usage:#define uuencode_example_usage
27 //usage: "$ uuencode busybox busybox\n"
28 //usage: "begin 755 busybox\n"
29 //usage: "<encoded file snipped>\n"
30 //usage: "$ uudecode busybox busybox > busybox.uu\n"
31 //usage: "$\n"
32
33 #include "libbb.h"
34
35 enum {
36 SRC_BUF_SIZE = 15*3, /* This *MUST* be a multiple of 3 */
37 DST_BUF_SIZE = 4 * ((SRC_BUF_SIZE + 2) / 3),
38 };
39
40 int uuencode_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
uuencode_main(int argc UNUSED_PARAM,char ** argv)41 int uuencode_main(int argc UNUSED_PARAM, char **argv)
42 {
43 struct stat stat_buf;
44 int src_fd = STDIN_FILENO;
45 const char *tbl;
46 mode_t mode;
47 char src_buf[SRC_BUF_SIZE];
48 char dst_buf[DST_BUF_SIZE + 1];
49
50 tbl = bb_uuenc_tbl_std;
51 mode = 0666 & ~umask(0666);
52 if (getopt32(argv, "^" "m" "\0" "-1:?2"/*must have 1 or 2 args*/)) {
53 tbl = bb_uuenc_tbl_base64;
54 }
55 argv += optind;
56 if (argv[1]) {
57 src_fd = xopen(argv[0], O_RDONLY);
58 fstat(src_fd, &stat_buf);
59 mode = stat_buf.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
60 argv++;
61 }
62
63 printf("begin%s %o %s", tbl == bb_uuenc_tbl_std ? "" : "-base64", mode, *argv);
64 while (1) {
65 size_t size = full_read(src_fd, src_buf, SRC_BUF_SIZE);
66 if (!size)
67 break;
68 if ((ssize_t)size < 0)
69 bb_simple_perror_msg_and_die(bb_msg_read_error);
70 /* Encode the buffer we just read in */
71 bb_uuencode(dst_buf, src_buf, size, tbl);
72 bb_putchar('\n');
73 if (tbl == bb_uuenc_tbl_std) {
74 bb_putchar(tbl[size]);
75 }
76 fflush(stdout);
77 xwrite(STDOUT_FILENO, dst_buf, 4 * ((size + 2) / 3));
78 }
79 printf(tbl == bb_uuenc_tbl_std ? "\n`\nend\n" : "\n====\n");
80
81 fflush_stdout_and_exit(EXIT_SUCCESS);
82 }
83