+/* vi: set sw=4 ts=4: */
/*
- * GPLv2
- * Copyright 2003, Glenn McGrath <bug1@iinet.net.au>
+ * Copyright 2003, Glenn McGrath
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation; either version 2 of the License.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*
- * 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.
+ * Based on specification from
+ * http://www.opengroup.org/onlinepubs/007904975/utilities/uuencode.html
*
- * 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.
- *
- * Based on specification from
- * http://www.opengroup.org/onlinepubs/007904975/utilities/uuencode.html
- *
- * Bugs: the spec doesnt mention anything about "`\n`\n" prior to the "end" line
+ * Bugs: the spec doesn't mention anything about "`\n`\n" prior to the
+ * "end" line
*/
-
-#include <stdio.h>
-#include <errno.h>
-#include <getopt.h> /* optind */
-#include <string.h>
-#include <stdlib.h>
-#include "busybox.h"
-
-static int read_stduu(FILE *src_stream, FILE *dst_stream)
+//usage:#define uudecode_trivial_usage
+//usage: "[-o OUTFILE] [INFILE]"
+//usage:#define uudecode_full_usage "\n\n"
+//usage: "Uudecode a file\n"
+//usage: "Finds OUTFILE in uuencoded source unless -o is given"
+//usage:
+//usage:#define uudecode_example_usage
+//usage: "$ uudecode -o busybox busybox.uu\n"
+//usage: "$ ls -l busybox\n"
+//usage: "-rwxr-xr-x 1 ams ams 245264 Jun 7 21:35 busybox\n"
+
+#include "libbb.h"
+
+#if ENABLE_UUDECODE
+static void FAST_FUNC read_stduu(FILE *src_stream, FILE *dst_stream, int flags UNUSED_PARAM)
{
char *line;
- while ((line = bb_get_chomped_line_from_file(src_stream)) != NULL) {
- int length;
- char *line_ptr = line;
+ while ((line = xmalloc_fgetline(src_stream)) != NULL) {
+ int encoded_len, str_len;
+ char *line_ptr, *dst;
if (strcmp(line, "end") == 0) {
- return(EXIT_SUCCESS);
+ return; /* the only non-error exit */
}
- length = ((*line_ptr - 0x20) & 0x3f)* 4 / 3;
- if (length <= 0) {
+ line_ptr = line;
+ while (*line_ptr) {
+ *line_ptr = (*line_ptr - 0x20) & 0x3f;
+ line_ptr++;
+ }
+ str_len = line_ptr - line;
+
+ encoded_len = line[0] * 4 / 3;
+ /* Check that line is not too short. (we tolerate
+ * overly _long_ line to accomodate possible extra '`').
+ * Empty line case is also caught here. */
+ if (str_len <= encoded_len) {
+ break; /* go to bb_error_msg_and_die("short file"); */
+ }
+ if (encoded_len <= 0) {
/* Ignore the "`\n" line, why is it even in the encode file ? */
+ free(line);
continue;
}
- if (length > 60) {
- bb_error_msg_and_die("Line too long");
- }
-
- line_ptr++;
- /* Tolerate an overly long line to acomadate a possible exta '`' */
- if (strlen(line_ptr) < (size_t)length) {
- bb_error_msg_and_die("Short file");
+ if (encoded_len > 60) {
+ bb_error_msg_and_die("line too long");
}
- while (length > 0) {
+ dst = line;
+ line_ptr = line + 1;
+ do {
/* Merge four 6 bit chars to three 8 bit chars */
- fputc(((line_ptr[0] - 0x20) & 077) << 2 | ((line_ptr[1] - 0x20) & 077) >> 4, dst_stream);
- line_ptr++;
- length--;
- if (length == 0) {
+ *dst++ = line_ptr[0] << 2 | line_ptr[1] >> 4;
+ encoded_len--;
+ if (encoded_len == 0) {
break;
}
- fputc(((line_ptr[0] - 0x20) & 077) << 4 | ((line_ptr[1] - 0x20) & 077) >> 2, dst_stream);
- line_ptr++;
- length--;
- if (length == 0) {
+ *dst++ = line_ptr[1] << 4 | line_ptr[2] >> 2;
+ encoded_len--;
+ if (encoded_len == 0) {
break;
}
- fputc(((line_ptr[0] - 0x20) & 077) << 6 | ((line_ptr[1] - 0x20) & 077), dst_stream);
- line_ptr += 2;
- length -= 2;
- }
+ *dst++ = line_ptr[2] << 6 | line_ptr[3];
+ line_ptr += 4;
+ encoded_len -= 2;
+ } while (encoded_len > 0);
+ fwrite(line, 1, dst - line, dst_stream);
free(line);
}
- bb_error_msg_and_die("Short file");
-}
-
-static int read_base64(FILE *src_stream, FILE *dst_stream)
-{
- static const char base64_table[] =
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=\n";
- char term_count = 0;
-
- while (1) {
- char translated[4];
- int count = 0;
-
- while (count < 4) {
- char *table_ptr;
- int ch;
-
- /* Get next _valid_ character */
- do {
- ch = fgetc(src_stream);
- if (ch == EOF) {
- bb_error_msg_and_die("Short file");
- }
- } while ((table_ptr = strchr(base64_table, ch)) == NULL);
-
- /* Convert encoded charcter to decimal */
- ch = table_ptr - base64_table;
-
- if (*table_ptr == '=') {
- if (term_count == 0) {
- translated[count] = 0;
- break;
- }
- term_count++;
- }
- else if (*table_ptr == '\n') {
- /* Check for terminating line */
- if (term_count == 5) {
- return(EXIT_SUCCESS);
- }
- term_count = 1;
- continue;
- } else {
- translated[count] = ch;
- count++;
- term_count = 0;
- }
- }
-
- /* Merge 6 bit chars to 8 bit */
- fputc(translated[0] << 2 | translated[1] >> 4, dst_stream);
- if (count > 2) {
- fputc(translated[1] << 4 | translated[2] >> 2, dst_stream);
- }
- if (count > 3) {
- fputc(translated[2] << 6 | translated[3], dst_stream);
- }
- }
+ bb_error_msg_and_die("short file");
}
+#endif
-extern int uudecode_main(int argc, char **argv)
+#if ENABLE_UUDECODE
+int uudecode_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int uudecode_main(int argc UNUSED_PARAM, char **argv)
{
- int (*decode_fn_ptr) (FILE * src, FILE * dst);
FILE *src_stream;
char *outname = NULL;
char *line;
- int opt;
- opt = bb_getopt_ulflags(argc, argv, "o:", &outname);
+ opt_complementary = "?1"; /* 1 argument max */
+ getopt32(argv, "o:", &outname);
+ argv += optind;
- if (optind == argc) {
- src_stream = stdin;
- } else if (optind + 1 == argc) {
- src_stream = bb_xfopen(argv[optind], "r");
- } else {
- bb_show_usage();
- }
+ if (!argv[0])
+ *--argv = (char*)"-";
+ src_stream = xfopen_stdin(argv[0]);
/* Search for the start of the encoding */
- while ((line = bb_get_chomped_line_from_file(src_stream)) != NULL) {
- char *line_ptr = NULL;
+ while ((line = xmalloc_fgetline(src_stream)) != NULL) {
+ void FAST_FUNC (*decode_fn_ptr)(FILE *src, FILE *dst, int flags);
+ char *line_ptr;
+ FILE *dst_stream;
+ int mode;
- if (line == NULL) {
- break;
- } else if (strncmp(line, "begin-base64 ", 13) == 0) {
+ if (strncmp(line, "begin-base64 ", 13) == 0) {
line_ptr = line + 13;
decode_fn_ptr = read_base64;
} else if (strncmp(line, "begin ", 6) == 0) {
line_ptr = line + 6;
decode_fn_ptr = read_stduu;
+ } else {
+ free(line);
+ continue;
}
- if (line_ptr) {
- FILE *dst_stream;
- int mode;
- int ret;
-
- mode = strtoul(line_ptr, NULL, 8);
- if (outname == NULL) {
- outname = strchr(line_ptr, ' ');
- if ((outname == NULL) || (*outname == '\0')) {
- break;
- }
- outname++;
- }
- if (strcmp(outname, "-") == 0) {
- dst_stream = stdout;
- } else {
- dst_stream = bb_xfopen(outname, "w");
- chmod(outname, mode & (S_IRWXU | S_IRWXG | S_IRWXO));
- }
- free(line);
- ret = decode_fn_ptr(src_stream, dst_stream);
- bb_fclose_nonstdin(src_stream);
- return(ret);
+ /* begin line found. decode and exit */
+ mode = bb_strtou(line_ptr, NULL, 8);
+ if (outname == NULL) {
+ outname = strchr(line_ptr, ' ');
+ if (!outname)
+ break;
+ outname++;
+ if (!outname[0])
+ break;
+ }
+ dst_stream = stdout;
+ if (NOT_LONE_DASH(outname)) {
+ dst_stream = xfopen_for_write(outname);
+ fchmod(fileno(dst_stream), mode & (S_IRWXU | S_IRWXG | S_IRWXO));
}
free(line);
+ decode_fn_ptr(src_stream, dst_stream, /*flags:*/ BASE64_FLAG_UU_STOP + BASE64_FLAG_NO_STOP_CHAR);
+ /* fclose_if_not_stdin(src_stream); - redundant */
+ return EXIT_SUCCESS;
+ }
+ bb_error_msg_and_die("no 'begin' line");
+}
+#endif
+
+//applet:IF_BASE64(APPLET(base64, BB_DIR_BIN, BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_BASE64) += uudecode.o
+
+//config:config BASE64
+//config: bool "base64"
+//config: default y
+//config: help
+//config: Base64 encode and decode
+
+//usage:#define base64_trivial_usage
+//usage: "[-d] [FILE]"
+//usage:#define base64_full_usage "\n\n"
+//usage: "Base64 encode or decode FILE to standard output"
+//usage: "\n -d Decode data"
+////usage: "\n -w COL Wrap lines at COL (default 76, 0 disables)"
+////usage: "\n -i When decoding, ignore non-alphabet characters"
+
+#if ENABLE_BASE64
+int base64_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int base64_main(int argc UNUSED_PARAM, char **argv)
+{
+ FILE *src_stream;
+ unsigned opts;
+
+ opt_complementary = "?1"; /* 1 argument max */
+ opts = getopt32(argv, "d");
+ argv += optind;
+
+ if (!argv[0])
+ *--argv = (char*)"-";
+ src_stream = xfopen_stdin(argv[0]);
+ if (opts) {
+ read_base64(src_stream, stdout, /*flags:*/ (char)EOF);
+ } else {
+ enum {
+ SRC_BUF_SIZE = 76/4*3, /* This *MUST* be a multiple of 3 */
+ DST_BUF_SIZE = 4 * ((SRC_BUF_SIZE + 2) / 3),
+ };
+ char src_buf[SRC_BUF_SIZE];
+ char dst_buf[DST_BUF_SIZE + 1];
+ int src_fd = fileno(src_stream);
+ 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 */
+ bb_uuencode(dst_buf, src_buf, size, bb_uuenc_tbl_base64);
+ xwrite(STDOUT_FILENO, dst_buf, 4 * ((size + 2) / 3));
+ bb_putchar('\n');
+ fflush(stdout);
+ }
}
- bb_error_msg_and_die("No `begin' line");
+
+ fflush_stdout_and_exit(EXIT_SUCCESS);
}
+#endif
+
+/* Test script.
+Put this into an empty dir with busybox binary, an run.
+
+#!/bin/sh
+test -x busybox || { echo "No ./busybox?"; exit; }
+ln -sf busybox uudecode
+ln -sf busybox uuencode
+>A_null
+echo -n A >A
+echo -n AB >AB
+echo -n ABC >ABC
+echo -n ABCD >ABCD
+echo -n ABCDE >ABCDE
+echo -n ABCDEF >ABCDEF
+cat busybox >A_bbox
+for f in A*; do
+ echo uuencode $f
+ ./uuencode $f <$f >u_$f
+ ./uuencode -m $f <$f >m_$f
+done
+mkdir unpk_u unpk_m 2>/dev/null
+for f in u_*; do
+ ./uudecode <$f -o unpk_u/${f:2}
+ diff -a ${f:2} unpk_u/${f:2} >/dev/null 2>&1
+ echo uudecode $f: $?
+done
+for f in m_*; do
+ ./uudecode <$f -o unpk_m/${f:2}
+ diff -a ${f:2} unpk_m/${f:2} >/dev/null 2>&1
+ echo uudecode $f: $?
+done
+*/
projects / platform / upstream / busybox.git / blobdiff