1 /* vi: set sw=4 ts=4: */
3 * Copyright (C) 2000 by Glenn McGrath
5 * based on the function base64_encode from http.c in wget v1.6
6 * Copyright (C) 1995, 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU Library General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 #include <sys/types.h>
31 /* Conversion table. for base 64 */
32 static char tbl_base64[65] = {
33 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
34 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
35 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
36 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
37 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
38 'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
39 'w', 'x', 'y', 'z', '0', '1', '2', '3',
40 '4', '5', '6', '7', '8', '9', '+', '/',
41 '=' /* termination character */
44 static char tbl_std[65] = {
45 '`', '!', '"', '#', '$', '%', '&', '\'',
46 '(', ')', '*', '+', ',', '-', '.', '/',
47 '0', '1', '2', '3', '4', '5', '6', '7',
48 '8', '9', ':', ';', '<', '=', '>', '?',
49 '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
50 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
51 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
52 'X', 'Y', 'Z', '[', '\\', ']', '^', '_',
53 '`' /* termination character */
57 * Encode the string S of length LENGTH to base64 format and place it
58 * to STORE. STORE will be 0-terminated, and must point to a writable
59 * buffer of at least 1+BASE64_LENGTH(length) bytes.
60 * where BASE64_LENGTH(len) = (4 * ((LENGTH + 2) / 3))
62 static void uuencode (const char *s, const char *store, const int length, const char *tbl)
65 unsigned char *p = (unsigned char *)store;
67 /* Transform the 3x8 bits to 4x6 bits, as required by base64. */
68 for (i = 0; i < length; i += 3) {
69 *p++ = tbl[s[0] >> 2];
70 *p++ = tbl[((s[0] & 3) << 4) + (s[1] >> 4)];
71 *p++ = tbl[((s[1] & 0xf) << 2) + (s[2] >> 6)];
72 *p++ = tbl[s[2] & 0x3f];
75 /* Pad the result if necessary... */
76 if (i == length + 1) {
79 else if (i == length + 2) {
80 *(p - 1) = *(p - 2) = tbl[64];
82 /* ...and zero-terminate it. */
86 #define SRC_BUF_SIZE 45 // This *MUST* be a multiple of 3
87 #define DST_BUF_SIZE 4 * ((SRC_BUF_SIZE + 2) / 3)
88 int uuencode_main(int argc, char **argv)
90 const int src_buf_size = SRC_BUF_SIZE;
91 const int dst_buf_size = DST_BUF_SIZE;
92 int write_size = dst_buf_size;
94 FILE *src_stream = stdin;
99 RESERVE_CONFIG_BUFFER(src_buf, SRC_BUF_SIZE + 1);
100 RESERVE_CONFIG_BUFFER(dst_buf, DST_BUF_SIZE + 1);
102 while ((opt = getopt(argc, argv, "m")) != -1) {
112 switch (argc - optind) {
114 src_stream = xfopen(argv[optind], "r");
115 stat(argv[optind], &stat_buf);
116 mode = stat_buf.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
117 if (src_stream == stdout) {
122 mode = 0666 & ~umask(0666);
128 printf("begin%s %o %s", tbl == tbl_std ? "" : "-base64", mode, argv[argc - 1]);
130 while ((size = fread(src_buf, 1, src_buf_size, src_stream)) > 0) {
131 if (size != src_buf_size) {
132 /* write_size is always 60 until the last line */
133 write_size=(4 * ((size + 2) / 3));
134 /* pad with 0s so we can just encode extra bits */
135 memset(&src_buf[size], 0, src_buf_size - size);
137 /* Encode the buffer we just read in */
138 uuencode(src_buf, dst_buf, size, tbl);
141 if (tbl == tbl_std) {
144 if (fwrite(dst_buf, 1, write_size, stdout) != write_size) {
145 perror("Couldnt finish writing");
148 printf(tbl == tbl_std ? "\n`\nend\n" : "\n====\n");
150 return(EXIT_SUCCESS);