* based on the function base64_encode from http.c in wget v1.6
* Copyright (C) 1995, 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Library General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
-#include <getopt.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include "busybox.h"
+//config:config UUENCODE
+//config: bool "uuencode (4.6 kb)"
+//config: default y
+//config: help
+//config: uuencode is used to uuencode a file.
-/* Conversion table. for base 64 */
-static char tbl_base64[64] = {
- 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
- 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
- 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
- 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
- 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
- 'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
- 'w', 'x', 'y', 'z', '0', '1', '2', '3',
- '4', '5', '6', '7', '8', '9', '+', '/'
-};
+//applet:IF_UUENCODE(APPLET(uuencode, BB_DIR_USR_BIN, BB_SUID_DROP))
-static char tbl_std[64] = {
- '`', '!', '"', '#', '$', '%', '&', '\'',
- '(', ')', '*', '+', ',', '-', '.', '/',
- '0', '1', '2', '3', '4', '5', '6', '7',
- '8', '9', ':', ';', '<', '=', '>', '?',
- '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
- 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
- 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
- 'X', 'Y', 'Z', '[', '\\', ']', '^', '_'
-};
+//kbuild:lib-$(CONFIG_UUENCODE) += uuencode.o
-/*
- * Encode the string S of length LENGTH to base64 format and place it
- * to STORE. STORE will be 0-terminated, and must point to a writable
- * buffer of at least 1+BASE64_LENGTH(length) bytes.
- * where BASE64_LENGTH(len) = (4 * ((LENGTH + 2) / 3))
- */
-static void base64_encode (const char *s, const char *store, const int length, const char *tbl)
-{
- int i;
- unsigned char *p = (unsigned char *)store;
+//usage:#define uuencode_trivial_usage
+//usage: "[-m] [FILE] STORED_FILENAME"
+//usage:#define uuencode_full_usage "\n\n"
+//usage: "Uuencode FILE (or stdin) to stdout\n"
+//usage: "\n -m Use base64 encoding per RFC1521"
+//usage:
+//usage:#define uuencode_example_usage
+//usage: "$ uuencode busybox busybox\n"
+//usage: "begin 755 busybox\n"
+//usage: "<encoded file snipped>\n"
+//usage: "$ uudecode busybox busybox > busybox.uu\n"
+//usage: "$\n"
- /* Transform the 3x8 bits to 4x6 bits, as required by base64. */
- for (i = 0; i < length; i += 3) {
- *p++ = tbl[s[0] >> 2];
- *p++ = tbl[((s[0] & 3) << 4) + (s[1] >> 4)];
- *p++ = tbl[((s[1] & 0xf) << 2) + (s[2] >> 6)];
- *p++ = tbl[s[2] & 0x3f];
- s += 3;
- }
- /* Pad the result if necessary... */
- if (i == length + 1) {
- *(p - 1) = '=';
- }
- else if (i == length + 2) {
- *(p - 1) = *(p - 2) = '=';
- }
- /* ...and zero-terminate it. */
- *p = '\0';
-}
+#include "libbb.h"
+
+enum {
+ SRC_BUF_SIZE = 15*3, /* This *MUST* be a multiple of 3 */
+ DST_BUF_SIZE = 4 * ((SRC_BUF_SIZE + 2) / 3),
+};
-int uuencode_main(int argc, char **argv)
+int uuencode_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int uuencode_main(int argc UNUSED_PARAM, char **argv)
{
- const int src_buf_size = BUFSIZ; // This *MUST* be a multiple of 3
- const int dst_buf_size = 4 * ((src_buf_size + 2) / 3);
- RESERVE_BB_BUFFER(src_buf, src_buf_size + 1);
- RESERVE_BB_BUFFER(dst_buf, dst_buf_size + 1);
struct stat stat_buf;
- FILE *src_stream = stdin;
- char *tbl = tbl_std;
- size_t size;
+ int src_fd = STDIN_FILENO;
+ const char *tbl;
mode_t mode;
- int opt;
- int column = 0;
- int write_size;
- int remaining;
- int buffer_offset = 0;
+ char src_buf[SRC_BUF_SIZE];
+ char dst_buf[DST_BUF_SIZE + 1];
- while ((opt = getopt(argc, argv, "m")) != -1) {
- switch (opt) {
- case 'm':
- tbl = tbl_base64;
- break;
- default:
- show_usage();
- }
+ tbl = bb_uuenc_tbl_std;
+ mode = 0666 & ~umask(0666);
+ opt_complementary = "-1:?2"; /* must have 1 or 2 args */
+ if (getopt32(argv, "m")) {
+ tbl = bb_uuenc_tbl_base64;
}
-
- switch (argc - optind) {
- case 2:
- src_stream = xfopen(argv[optind], "r");
- stat(argv[optind], &stat_buf);
- mode = stat_buf.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
- if (src_stream == stdout) {
- printf("NULL\n");
- }
- break;
- case 1:
- mode = umask(0666);
- break;
- default:
- show_usage();
+ argv += optind;
+ if (argv[1]) {
+ src_fd = xopen(argv[0], O_RDONLY);
+ fstat(src_fd, &stat_buf);
+ mode = stat_buf.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
+ argv++;
}
- printf("begin%s %o %s", tbl == tbl_std ? "" : "-base64", mode, argv[argc - 1]);
-
- while ((size = fread(src_buf, 1, src_buf_size, src_stream)) > 0) {
+ printf("begin%s %o %s", tbl == bb_uuenc_tbl_std ? "" : "-base64", mode, *argv);
+ while (1) {
+ size_t size = full_read(src_fd, src_buf, SRC_BUF_SIZE);
+ if (!size)
+ break;
+ if ((ssize_t)size < 0)
+ bb_perror_msg_and_die(bb_msg_read_error);
/* Encode the buffer we just read in */
- base64_encode(src_buf, dst_buf, size, tbl);
-
- /* Write the buffer to stdout, wrapping at 60 chars.
- * This looks overly complex, but it gets tricky as
- * the line has to continue to wrap correctly if we
- * have to refill the buffer
- *
- * Improvments most welcome
- */
-
- /* Initialise values for the new buffer */
- remaining = 4 * ((size + 2) / 3);
- buffer_offset = 0;
- if (remaining > (60 - column)) {
- write_size = 60 - column;
+ bb_uuencode(dst_buf, src_buf, size, tbl);
+ bb_putchar('\n');
+ if (tbl == bb_uuenc_tbl_std) {
+ bb_putchar(tbl[size]);
}
- else if (remaining < 60) {
- write_size = remaining;
- } else {
- write_size = 60;
- }
-
- /* Write the buffer to stdout, wrapping at 60 chars
- * starting from the column the last buffer ran out
- */
- do {
- /* Setup a new row if required */
- if (column == 0) {
- putchar('\n');
- if (tbl == tbl_std) {
- putchar('M');
- }
- }
- /* Write to the 60th column */
- if (fwrite(&dst_buf[buffer_offset], 1, write_size, stdout) != write_size) {
- perror("Couldnt finish writing");
- }
- /* Update variables based on last write */
- buffer_offset += write_size;
- remaining -= write_size;
- column += write_size;
- if (column % 60 == 0) {
- column = 0;
- }
-
- /* working next amount to write */
- write_size = (60 - column) % 60;
- if (write_size < remaining) {
- write_size = remaining;
- }
- if (write_size == 0) {
- write_size = 60;
- }
- } while (remaining > 0);
+ fflush(stdout);
+ xwrite(STDOUT_FILENO, dst_buf, 4 * ((size + 2) / 3));
}
- printf(tbl == tbl_std ? "\n`\nend\n" : "\n====\n");
+ printf(tbl == bb_uuenc_tbl_std ? "\n`\nend\n" : "\n====\n");
- return(EXIT_SUCCESS);
+ fflush_stdout_and_exit(EXIT_SUCCESS);
}
projects / oweals / busybox.git / blobdiff