mirror of
https://github.com/sheumann/hush.git
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d921b2ecc0
things like xasprintf() into xfuncs.c, remove xprint_file_by_name() (it only had one user), clean up lots of #includes... General cleanup pass. What I've been doing for the last couple days. And it conflicts! I've removed httpd.c from this checkin due to somebody else touching that file. It builds for me. I have to catch a bus. (Now you know why I'm looking forward to Mercurial.)
130 lines
3.6 KiB
C
130 lines
3.6 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 "busybox.h"
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/* Conversion table. for base 64 */
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static const char tbl_base64[65] = {
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'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
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'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
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'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
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'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
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'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
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'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
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'w', 'x', 'y', 'z', '0', '1', '2', '3',
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'4', '5', '6', '7', '8', '9', '+', '/',
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'=' /* termination character */
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};
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static const char tbl_std[65] = {
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'`', '!', '"', '#', '$', '%', '&', '\'',
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'(', ')', '*', '+', ',', '-', '.', '/',
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'0', '1', '2', '3', '4', '5', '6', '7',
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'8', '9', ':', ';', '<', '=', '>', '?',
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'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
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'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
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'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
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'X', 'Y', 'Z', '[', '\\', ']', '^', '_',
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'`' /* termination character */
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};
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/*
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* Encode the string S of length LENGTH to base64 format and place it
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* to STORE. STORE will be 0-terminated, and must point to a writable
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* buffer of at least 1+BASE64_LENGTH(length) bytes.
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* where BASE64_LENGTH(len) = (4 * ((LENGTH + 2) / 3))
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*/
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static void uuencode (const unsigned char *s, char *store, const int length, const char *tbl)
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{
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int i;
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char *p = store;
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/* Transform the 3x8 bits to 4x6 bits, as required by base64. */
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for (i = 0; i < length; i += 3) {
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*p++ = tbl[s[0] >> 2];
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*p++ = tbl[((s[0] & 3) << 4) + (s[1] >> 4)];
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*p++ = tbl[((s[1] & 0xf) << 2) + (s[2] >> 6)];
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*p++ = tbl[s[2] & 0x3f];
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s += 3;
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}
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/* Pad the result if necessary... */
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if (i == length + 1) {
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*(p - 1) = tbl[64];
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}
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else if (i == length + 2) {
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*(p - 1) = *(p - 2) = tbl[64];
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}
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/* ...and zero-terminate it. */
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*p = '\0';
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}
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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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{
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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 = tbl_std;
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if (bb_getopt_ulflags(argc, argv, "m") & 1) {
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tbl = 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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bb_printf("begin%s %o %s", tbl == 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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uuencode((unsigned char*)src_buf, dst_buf, size, tbl);
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putchar('\n');
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if (tbl == 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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bb_printf(tbl == tbl_std ? "\n`\nend\n" : "\n====\n");
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xferror(src_stream, "source"); /* TODO - Fix this! */
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bb_fflush_stdout_and_exit(EXIT_SUCCESS);
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}
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