77 lines
2.1 KiB
C
77 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 tarball for details.
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*/
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#include "libbb.h"
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#define SRC_BUF_SIZE 45 // This *MUST* be a multiple of 3
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#define DST_BUF_SIZE 4 * ((SRC_BUF_SIZE + 2) / 3)
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int uuencode_main(int argc, char **argv);
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int uuencode_main(int argc, char **argv)
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{
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const size_t src_buf_size = SRC_BUF_SIZE;
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const size_t dst_buf_size = DST_BUF_SIZE;
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size_t write_size = dst_buf_size;
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struct stat stat_buf;
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FILE *src_stream = stdin;
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const char *tbl;
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size_t size;
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mode_t mode;
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RESERVE_CONFIG_BUFFER(src_buf, SRC_BUF_SIZE + 1);
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RESERVE_CONFIG_BUFFER(dst_buf, DST_BUF_SIZE + 1);
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tbl = bb_uuenc_tbl_std;
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if (getopt32(argc, argv, "m") & 1) {
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tbl = bb_uuenc_tbl_base64;
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}
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switch (argc - optind) {
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case 2:
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src_stream = xfopen(argv[optind], "r");
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xstat(argv[optind], &stat_buf);
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mode = stat_buf.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
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if (src_stream == stdout) {
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puts("NULL");
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}
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break;
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case 1:
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mode = 0666 & ~umask(0666);
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break;
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default:
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bb_show_usage();
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}
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printf("begin%s %o %s", tbl == bb_uuenc_tbl_std ? "" : "-base64", mode, argv[argc - 1]);
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while ((size = fread(src_buf, 1, src_buf_size, src_stream)) > 0) {
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if (size != src_buf_size) {
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/* write_size is always 60 until the last line */
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write_size = (4 * ((size + 2) / 3));
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/* pad with 0s so we can just encode extra bits */
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memset(&src_buf[size], 0, src_buf_size - size);
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}
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/* Encode the buffer we just read in */
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bb_uuencode((unsigned char*)src_buf, dst_buf, size, tbl);
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putchar('\n');
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if (tbl == bb_uuenc_tbl_std) {
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putchar(tbl[size]);
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}
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if (fwrite(dst_buf, 1, write_size, stdout) != write_size) {
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bb_perror_msg_and_die(bb_msg_write_error);
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}
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}
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printf(tbl == bb_uuenc_tbl_std ? "\n`\nend\n" : "\n====\n");
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die_if_ferror(src_stream, "source"); /* TODO - Fix this! */
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fflush_stdout_and_exit(EXIT_SUCCESS);
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}
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