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Diffstat (limited to 'basic_cmds/uuencode/uuencode.c')
| -rw-r--r-- | basic_cmds/uuencode/uuencode.c | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/basic_cmds/uuencode/uuencode.c b/basic_cmds/uuencode/uuencode.c new file mode 100644 index 0000000..bb528a6 --- /dev/null +++ b/basic_cmds/uuencode/uuencode.c @@ -0,0 +1,226 @@ +/*- + * 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. + */ + +#ifndef lint +#include <sys/cdefs.h> +__unused static const char copyright[] = +"@(#) Copyright (c) 1983, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +#if 0 +static char sccsid[] = "@(#)uuencode.c 8.2 (Berkeley) 4/2/94"; +#endif +__unused static const char rcsid[] = + "$FreeBSD: src/usr.bin/uuencode/uuencode.c,v 1.4.2.4 2002/06/17 05:01:46 jmallett Exp $"; +#endif /* not lint */ + +/* + * uuencode [input] output + * + * Encode a file so it can be mailed to a remote system. + */ +#include <sys/param.h> +#include <sys/socket.h> +#include <sys/stat.h> + +#include <netinet/in.h> + +#include <err.h> +#include <arpa/nameser.h> +#include <resolv.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +int b64_ntop __P((u_char const *, size_t, char *, size_t)); +int b64_pton __P((char const *, u_char *, size_t)); +void encode(void); +void base64_encode(void); +static void usage(void); + +FILE *output; +int mode; +char **av; + +int +main(argc, argv) + int argc; + char *argv[]; +{ + struct stat sb; + int base64; + char ch; + char *outfile; + + base64 = 0; + outfile = NULL; + + while ((ch = getopt(argc, argv, "mo:")) != -1) { + switch (ch) { + case 'm': + base64 = 1; + break; + case 'o': + outfile = optarg; + break; + case '?': + default: + usage(); + } + } + argv += optind; + argc -= optind; + + switch(argc) { + case 2: /* optional first argument is input file */ + if (!freopen(*argv, "r", stdin) || fstat(fileno(stdin), &sb)) + err(1, "%s", *argv); +#define RWX (S_IRWXU|S_IRWXG|S_IRWXO) + mode = sb.st_mode & RWX; + ++argv; + break; + case 1: +#define RW (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) + mode = RW & ~umask(RW); + break; + case 0: + default: + usage(); + } + + av = argv; + + if (outfile != NULL) { + output = fopen(outfile, "w+"); + if (output == NULL) + err(1, "unable to open %s for output", outfile); + } else + output = stdout; + if (base64) + base64_encode(); + else + encode(); + if (ferror(output)) + errx(1, "write error"); + exit(0); +} + +/* ENC is the basic 1 character encoding function to make a char printing */ +#define ENC(c) ((c) ? ((c) & 077) + ' ': '`') + +/* + * Copy from in to out, encoding in base64 as you go along. + */ +void +base64_encode() +{ + /* + * Output must fit into 80 columns, chunks come in 4, leave 1. + */ +#define GROUPS ((80 / 4) - 1) + unsigned char buf[3]; + char buf2[sizeof(buf) * 2 + 1]; + size_t n; + int rv, sequence; + + sequence = 0; + + fprintf(output, "begin-base64 %o %s\n", mode, *av); + while ((n = fread(buf, 1, sizeof(buf), stdin))) { + ++sequence; + rv = b64_ntop(buf, n, buf2, (sizeof(buf2) / sizeof(buf2[0]))); + if (rv == -1) + errx(1, "b64_ntop: error encoding base64"); + fprintf(output, "%s%s", buf2, (sequence % GROUPS) ? "" : "\n"); + } + if (sequence % GROUPS) + fprintf(output, "\n"); + fprintf(output, "====\n"); +} + +/* + * Copy from in to out, encoding as you go along. + */ +void +encode() +{ + register int ch, n; + register char *p; + char buf[80]; + + (void)fprintf(output, "begin %o %s\n", mode, *av); + while ((n = fread(buf, 1, 45, stdin))) { + ch = ENC(n); + if (fputc(ch, output) == EOF) + break; + for (p = buf; n > 0; n -= 3, p += 3) { + /* Pad with nulls if not a multiple of 3. */ + if (n < 3) { + p[2] = '\0'; + if (n < 2) + p[1] = '\0'; + } + ch = *p >> 2; + ch = ENC(ch); + if (fputc(ch, output) == EOF) + break; + ch = ((*p << 4) & 060) | ((p[1] >> 4) & 017); + ch = ENC(ch); + if (fputc(ch, output) == EOF) + break; + ch = ((p[1] << 2) & 074) | ((p[2] >> 6) & 03); + ch = ENC(ch); + if (fputc(ch, output) == EOF) + break; + ch = p[2] & 077; + ch = ENC(ch); + if (fputc(ch, output) == EOF) + break; + } + if (fputc('\n', output) == EOF) + break; + } + if (ferror(stdin)) + errx(1, "read error"); + (void)fprintf(output, "%c\nend\n", ENC('\0')); +} + +static void +usage() +{ + (void)fprintf(stderr,"usage: uuencode [-m] [-o outfile] [infile] remotefile\n"); + exit(1); +} |