Annotation of src/usr.bin/uuencode/uuencode.c, Revision 1.5
1.5 ! millert 1: /* $OpenBSD: uuencode.c,v 1.4 2001/11/19 19:02:17 mpech Exp $ */
1.1 deraadt 2: /* $NetBSD: uuencode.c,v 1.7 1994/11/17 07:41:15 jtc Exp $ */
3:
4: /*-
5: * Copyright (c) 1983, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
1.5 ! millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: char copyright[] =
34: "@(#) Copyright (c) 1983, 1993\n\
35: The Regents of the University of California. All rights reserved.\n";
36:
37: #ifndef lint
38: #if 0
39: static char sccsid[] = "@(#)uuencode.c 8.2 (Berkeley) 4/2/94";
40: #endif
1.5 ! millert 41: static char rcsid[] = "$OpenBSD: uuencode.c,v 1.4 2001/11/19 19:02:17 mpech Exp $";
1.1 deraadt 42: #endif /* not lint */
43:
44: /*
45: * uuencode [input] output
46: *
47: * Encode a file so it can be mailed to a remote system.
48: */
49: #include <stdio.h>
50: #include <stdlib.h>
51: #include <string.h>
52: #include <locale.h>
53: #include <errno.h>
54: #include <sys/types.h>
55: #include <sys/stat.h>
56: #include <unistd.h>
57:
58: static void encode();
59: static __dead void usage();
60:
61: int
62: main(argc, argv)
63: int argc;
64: char *argv[];
65: {
66: struct stat sb;
67: int mode;
68:
69: setlocale(LC_ALL, "");
70:
71: while (getopt(argc, argv, "") != -1)
72: usage();
73: argv += optind;
74: argc -= optind;
75:
76: switch(argc) {
77: case 2: /* optional first argument is input file */
78: if (!freopen(*argv, "r", stdin) || fstat(fileno(stdin), &sb)) {
79: (void)fprintf(stderr, "uuencode: %s: %s.\n",
80: *argv, strerror(errno));
81: exit(1);
82: }
83: #define RWX (S_IRWXU|S_IRWXG|S_IRWXO)
84: mode = sb.st_mode & RWX;
85: ++argv;
86: break;
87: case 1:
88: #define RW (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
89: mode = RW & ~umask(RW);
90: break;
91: case 0:
92: default:
93: usage();
94: }
95:
96: (void)printf("begin %o %s\n", mode, *argv);
97: encode();
98: (void)printf("end\n");
99: if (ferror(stdout)) {
100: (void)fprintf(stderr, "uuencode: write error.\n");
101: exit(1);
102: }
103: exit(0);
104: }
105:
106: /* ENC is the basic 1 character encoding function to make a char printing */
107: #define ENC(c) ((c) ? ((c) & 077) + ' ': '`')
108:
109: /*
110: * copy from in to out, encoding as you go along.
111: */
112: static void
113: encode()
114: {
1.4 mpech 115: int ch, n;
116: char *p;
1.1 deraadt 117: char buf[80];
118:
1.3 deraadt 119: while ((n = fread(buf, 1, 45, stdin))) {
1.1 deraadt 120: ch = ENC(n);
121: if (putchar(ch) == EOF)
122: break;
123: for (p = buf; n > 0; n -= 3, p += 3) {
124: ch = *p >> 2;
125: ch = ENC(ch);
126: if (putchar(ch) == EOF)
127: break;
128: ch = (*p << 4) & 060 | (p[1] >> 4) & 017;
129: ch = ENC(ch);
130: if (putchar(ch) == EOF)
131: break;
132: ch = (p[1] << 2) & 074 | (p[2] >> 6) & 03;
133: ch = ENC(ch);
134: if (putchar(ch) == EOF)
135: break;
136: ch = p[2] & 077;
137: ch = ENC(ch);
138: if (putchar(ch) == EOF)
139: break;
140: }
141: if (putchar('\n') == EOF)
142: break;
143: }
144: if (ferror(stdin)) {
145: (void)fprintf(stderr, "uuencode: read error.\n");
146: exit(1);
147: }
148: ch = ENC('\0');
149: (void)putchar(ch);
150: (void)putchar('\n');
151: }
152:
153: static void
154: usage()
155: {
156: (void)fprintf(stderr,"usage: uuencode [infile] remotefile\n");
157: exit(1);
158: }
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