diff options
author | Theo de Raadt <deraadt@cvs.openbsd.org> | 1995-10-18 08:53:40 +0000 |
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committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 1995-10-18 08:53:40 +0000 |
commit | d6583bb2a13f329cf0332ef2570eb8bb8fc0e39c (patch) | |
tree | ece253b876159b39c620e62b6c9b1174642e070e /usr.bin/uudecode/uudecode.c |
initial import of NetBSD tree
Diffstat (limited to 'usr.bin/uudecode/uudecode.c')
-rw-r--r-- | usr.bin/uudecode/uudecode.c | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/usr.bin/uudecode/uudecode.c b/usr.bin/uudecode/uudecode.c new file mode 100644 index 00000000000..b8eba445d37 --- /dev/null +++ b/usr.bin/uudecode/uudecode.c @@ -0,0 +1,203 @@ +/* $NetBSD: uudecode.c,v 1.6 1994/11/17 07:40:43 jtc Exp $ */ + +/*- + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +char copyright[] = +"@(#) Copyright (c) 1983, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; + +#ifndef lint +#if 0 +static char sccsid[] = "@(#)uudecode.c 8.2 (Berkeley) 4/2/94"; +#endif +static char rcsid[] = "$NetBSD: uudecode.c,v 1.6 1994/11/17 07:40:43 jtc Exp $"; +#endif /* not lint */ + +/* + * uudecode [file ...] + * + * create the specified file, decoding as you go. + * used with uuencode. + */ +#include <stdio.h> +#include <string.h> +#include <locale.h> +#include <errno.h> +#include <sys/param.h> +#include <sys/stat.h> + +#include <pwd.h> +#include <unistd.h> + +static int decode(); +static void usage(); +char *filename; + +int +main(argc, argv) + int argc; + char *argv[]; +{ + int rval; + + setlocale(LC_ALL, ""); + + while (getopt(argc, argv, "") != -1) + usage(); + argc -= optind; + argv += optind; + + if (*argv) { + rval = 0; + do { + if (!freopen(filename = *argv, "r", stdin)) { + (void)fprintf(stderr, "uudecode: %s: %s\n", + *argv, strerror(errno)); + rval = 1; + continue; + } + rval |= decode(); + } while (*++argv); + } else { + filename = "stdin"; + rval = decode(); + } + exit(rval); +} + +static int +decode() +{ + extern int errno; + struct passwd *pw; + register int n; + register char ch, *p; + int mode, n1; + char buf[MAXPATHLEN]; + + /* search for header line */ + do { + if (!fgets(buf, sizeof(buf), stdin)) { + (void)fprintf(stderr, + "uudecode: %s: no \"begin\" line\n", filename); + return(1); + } + } while (strncmp(buf, "begin ", 6)); + (void)sscanf(buf, "begin %o %s", &mode, buf); + + /* handle ~user/file format */ + if (buf[0] == '~') { + if (!(p = index(buf, '/'))) { + (void)fprintf(stderr, "uudecode: %s: illegal ~user.\n", + filename); + return(1); + } + *p++ = NULL; + if (!(pw = getpwnam(buf + 1))) { + (void)fprintf(stderr, "uudecode: %s: no user %s.\n", + filename, buf); + return(1); + } + n = strlen(pw->pw_dir); + n1 = strlen(p); + if (n + n1 + 2 > MAXPATHLEN) { + (void)fprintf(stderr, "uudecode: %s: path too long.\n", + filename); + return(1); + } + bcopy(p, buf + n + 1, n1 + 1); + bcopy(pw->pw_dir, buf, n); + 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)); + return(1); + } + + /* for each input line */ + for (;;) { + if (!fgets(p = buf, sizeof(buf), stdin)) { + (void)fprintf(stderr, "uudecode: %s: short file.\n", + filename); + return(1); + } +#define DEC(c) (((c) - ' ') & 077) /* single character decode */ + /* + * `n' is used to avoid writing out all the characters + * at the end of the file. + */ + if ((n = DEC(*p)) <= 0) + break; + for (++p; n > 0; p += 4, n -= 3) + if (n >= 3) { + ch = DEC(p[0]) << 2 | DEC(p[1]) >> 4; + putchar(ch); + ch = DEC(p[1]) << 4 | DEC(p[2]) >> 2; + putchar(ch); + ch = DEC(p[2]) << 6 | DEC(p[3]); + putchar(ch); + } + else { + if (n >= 1) { + ch = DEC(p[0]) << 2 | DEC(p[1]) >> 4; + putchar(ch); + } + if (n >= 2) { + ch = DEC(p[1]) << 4 | DEC(p[2]) >> 2; + putchar(ch); + } + if (n >= 3) { + ch = DEC(p[2]) << 6 | DEC(p[3]); + putchar(ch); + } + } + } + if (!fgets(buf, sizeof(buf), stdin) || strcmp(buf, "end\n")) { + (void)fprintf(stderr, "uudecode: %s: no \"end\" line.\n", + filename); + return(1); + } + return(0); +} + +static void +usage() +{ + (void)fprintf(stderr, "usage: uudecode [file ...]\n"); + exit(1); +} |