blob: 917cdaea5bf206f547ae6eef7189637dbafa1540
| 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" |
| 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; |
| 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 | opt_complementary = "-1:?2"; /* must have 1 or 2 args */ |
| 53 | if (getopt32(argv, "m")) { |
| 54 | tbl = bb_uuenc_tbl_base64; |
| 55 | } |
| 56 | argv += optind; |
| 57 | if (argv[1]) { |
| 58 | src_fd = xopen(argv[0], O_RDONLY); |
| 59 | fstat(src_fd, &stat_buf); |
| 60 | mode = stat_buf.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); |
| 61 | argv++; |
| 62 | } |
| 63 | |
| 64 | printf("begin%s %o %s", tbl == bb_uuenc_tbl_std ? "" : "-base64", mode, *argv); |
| 65 | while (1) { |
| 66 | size_t size = full_read(src_fd, src_buf, SRC_BUF_SIZE); |
| 67 | if (!size) |
| 68 | break; |
| 69 | if ((ssize_t)size < 0) |
| 70 | bb_perror_msg_and_die(bb_msg_read_error); |
| 71 | /* Encode the buffer we just read in */ |
| 72 | bb_uuencode(dst_buf, src_buf, size, tbl); |
| 73 | bb_putchar('\n'); |
| 74 | if (tbl == bb_uuenc_tbl_std) { |
| 75 | bb_putchar(tbl[size]); |
| 76 | } |
| 77 | fflush(stdout); |
| 78 | xwrite(STDOUT_FILENO, dst_buf, 4 * ((size + 2) / 3)); |
| 79 | } |
| 80 | printf(tbl == bb_uuenc_tbl_std ? "\n`\nend\n" : "\n====\n"); |
| 81 | |
| 82 | fflush_stdout_and_exit(EXIT_SUCCESS); |
| 83 | } |
| 84 |