75 lines
2.1 KiB
C
75 lines
2.1 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Copyright (C) 2000 by Glenn McGrath
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*
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* based on the function base64_encode from http.c in wget v1.6
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* Copyright (C) 1995, 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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//usage:#define uuencode_trivial_usage
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//usage: "[-m] [FILE] STORED_FILENAME"
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//usage:#define uuencode_full_usage "\n\n"
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//usage: "Uuencode FILE (or stdin) to stdout\n"
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//usage: "\n -m Use base64 encoding per RFC1521"
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//usage:
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//usage:#define uuencode_example_usage
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//usage: "$ uuencode busybox busybox\n"
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//usage: "begin 755 busybox\n"
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//usage: "<encoded file snipped>\n"
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//usage: "$ uudecode busybox busybox > busybox.uu\n"
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//usage: "$\n"
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#include "libbb.h"
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enum {
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SRC_BUF_SIZE = 15*3, /* This *MUST* be a multiple of 3 */
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DST_BUF_SIZE = 4 * ((SRC_BUF_SIZE + 2) / 3),
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};
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int uuencode_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int uuencode_main(int argc UNUSED_PARAM, char **argv)
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{
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struct stat stat_buf;
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int src_fd = STDIN_FILENO;
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const char *tbl;
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mode_t mode;
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char src_buf[SRC_BUF_SIZE];
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char dst_buf[DST_BUF_SIZE + 1];
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tbl = bb_uuenc_tbl_std;
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mode = 0666 & ~umask(0666);
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opt_complementary = "-1:?2"; /* must have 1 or 2 args */
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if (getopt32(argv, "m")) {
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tbl = bb_uuenc_tbl_base64;
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}
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argv += optind;
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if (argv[1]) {
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src_fd = xopen(argv[0], O_RDONLY);
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fstat(src_fd, &stat_buf);
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mode = stat_buf.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
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argv++;
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}
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printf("begin%s %o %s", tbl == bb_uuenc_tbl_std ? "" : "-base64", mode, *argv);
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while (1) {
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size_t size = full_read(src_fd, src_buf, SRC_BUF_SIZE);
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if (!size)
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break;
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if ((ssize_t)size < 0)
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bb_perror_msg_and_die(bb_msg_read_error);
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/* Encode the buffer we just read in */
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bb_uuencode(dst_buf, src_buf, size, tbl);
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bb_putchar('\n');
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if (tbl == bb_uuenc_tbl_std) {
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bb_putchar(tbl[size]);
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}
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fflush(stdout);
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xwrite(STDOUT_FILENO, dst_buf, 4 * ((size + 2) / 3));
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}
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printf(tbl == bb_uuenc_tbl_std ? "\n`\nend\n" : "\n====\n");
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fflush_stdout_and_exit(EXIT_SUCCESS);
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}
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