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/* vi: set sw=4 ts=4: */
/*
* Copyright (C) 2000 by Glenn McGrath
*
* based on the function base64_encode from http.c in wget v1.6
* Copyright (C) 1995, 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
#include "busybox.h"
#define SRC_BUF_SIZE 45 // This *MUST* be a multiple of 3
#define DST_BUF_SIZE 4 * ((SRC_BUF_SIZE + 2) / 3)
int uuencode_main(int argc, char **argv)
{
const size_t src_buf_size = SRC_BUF_SIZE;
const size_t dst_buf_size = DST_BUF_SIZE;
size_t write_size = dst_buf_size;
struct stat stat_buf;
FILE *src_stream = stdin;
const char *tbl;
size_t size;
mode_t mode;
RESERVE_CONFIG_BUFFER(src_buf, SRC_BUF_SIZE + 1);
RESERVE_CONFIG_BUFFER(dst_buf, DST_BUF_SIZE + 1);
tbl = bb_uuenc_tbl_std;
if (getopt32(argc, argv, "m") & 1) {
tbl = bb_uuenc_tbl_base64;
}
switch (argc - optind) {
case 2:
src_stream = xfopen(argv[optind], "r");
xstat(argv[optind], &stat_buf);
mode = stat_buf.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
if (src_stream == stdout) {
puts("NULL");
}
break;
case 1:
mode = 0666 & ~umask(0666);
break;
default:
bb_show_usage();
}
printf("begin%s %o %s", tbl == bb_uuenc_tbl_std ? "" : "-base64", mode, argv[argc - 1]);
while ((size = fread(src_buf, 1, src_buf_size, src_stream)) > 0) {
if (size != src_buf_size) {
/* write_size is always 60 until the last line */
write_size = (4 * ((size + 2) / 3));
/* pad with 0s so we can just encode extra bits */
memset(&src_buf[size], 0, src_buf_size - size);
}
/* Encode the buffer we just read in */
bb_uuencode((unsigned char*)src_buf, dst_buf, size, tbl);
putchar('\n');
if (tbl == bb_uuenc_tbl_std) {
putchar(tbl[size]);
}
if (fwrite(dst_buf, 1, write_size, stdout) != write_size) {
bb_perror_msg_and_die(bb_msg_write_error);
}
}
printf(tbl == bb_uuenc_tbl_std ? "\n`\nend\n" : "\n====\n");
die_if_ferror(src_stream, "source"); /* TODO - Fix this! */
fflush_stdout_and_exit(EXIT_SUCCESS);
}
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