* Copyright (c) 1983 Regents of the University of California.
* %sccs.include.redist.c%
static char sccsid
[] = "@(#)uudecode.c 5.10 (Berkeley) %G%";
* create the specified file, decoding as you go.
if (!freopen(filename
= *argv
, "r", stdin
)) {
(void)fprintf(stderr
, "uudecode: %s: %s\n",
/* search for header line */
if (!fgets(buf
, sizeof(buf
), stdin
)) {
"uudecode: %s: no \"begin\" line\n", filename
);
} while (strncmp(buf
, "begin ", 6));
(void)sscanf(buf
, "begin %o %s", &mode
, buf
);
/* handle ~user/file format */
if (!(p
= index(buf
, '/'))) {
(void)fprintf(stderr
, "uudecode: %s: illegal ~user.\n",
if (!(pw
= getpwnam(buf
+ 1))) {
(void)fprintf(stderr
, "uudecode: %s: no user %s.\n",
if (n
+ n1
+ 2 > MAXPATHLEN
) {
(void)fprintf(stderr
, "uudecode: %s: path too long.\n",
bcopy(p
, buf
+ n
+ 1, n1
+ 1);
bcopy(pw
->pw_dir
, buf
, n
);
/* create output file, set mode */
if (!freopen(buf
, "w", stdout
) ||
fchmod(fileno(stdout
), mode
&0666)) {
(void)fprintf(stderr
, "uudecode: %s: %s: %s\n", buf
,
filename
, strerror(errno
));
/* for each input line */
if (!fgets(p
= buf
, sizeof(buf
), stdin
)) {
(void)fprintf(stderr
, "uudecode: %s: short file.\n",
#define DEC(c) (((c) - ' ') & 077) /* single character decode */
* `n' is used to avoid writing out all the characters
* at the end of the file.
for (++p
; n
> 0; p
+= 4, n
-= 3)
ch
= DEC(p
[0]) << 2 | DEC(p
[1]) >> 4;
ch
= DEC(p
[1]) << 4 | DEC(p
[2]) >> 2;
ch
= DEC(p
[2]) << 6 | DEC(p
[3]);
ch
= DEC(p
[0]) << 2 | DEC(p
[1]) >> 4;
ch
= DEC(p
[1]) << 4 | DEC(p
[2]) >> 2;
ch
= DEC(p
[2]) << 6 | DEC(p
[3]);
if (!fgets(buf
, sizeof(buf
), stdin
) || strcmp(buf
, "end\n")) {
(void)fprintf(stderr
, "uudecode: %s: no \"end\" line.\n",
(void)fprintf(stderr
, "usage: uudecode [file ...]\n");