1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1983, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #if 0
33 #ifndef lint
34 static const char copyright[] =
35 "@(#) Copyright (c) 1983, 1993\n\
36 The Regents of the University of California. All rights reserved.\n";
37 #endif /* not lint */
38
39 #ifndef lint
40 static char sccsid[] = "@(#)uuencode.c 8.2 (Berkeley) 4/2/94";
41 #endif /* not lint */
42 #endif
43 #include <sys/cdefs.h>
44 __FBSDID("$FreeBSD$");
45
46 /*
47 * uuencode [input] output
48 *
49 * Encode a file so it can be mailed to a remote system.
50 */
51 #include <sys/param.h>
52 #include <sys/socket.h>
53 #include <sys/stat.h>
54
55 #include <netinet/in.h>
56
57 #include <err.h>
58 #include <libgen.h>
59 #include <resolv.h>
60 #include <stdio.h>
61 #include <stdlib.h>
62 #include <string.h>
63 #include <unistd.h>
64
65 static void encode(void);
66 static void base64_encode(void);
67 static void usage(void);
68
69 static FILE *output;
70 static int mode;
71 static char raw = 0;
72 static char **av;
73
74 int
main(int argc,char * argv[])75 main(int argc, char *argv[])
76 {
77 struct stat sb;
78 int base64;
79 int ch;
80 const char *outfile;
81
82 base64 = 0;
83 outfile = NULL;
84
85 if (strcmp(basename(argv[0]), "b64encode") == 0)
86 base64 = 1;
87
88 while ((ch = getopt(argc, argv, "mo:r")) != -1) {
89 switch (ch) {
90 case 'm':
91 base64 = 1;
92 break;
93 case 'o':
94 outfile = optarg;
95 break;
96 case 'r':
97 raw = 1;
98 break;
99 case '?':
100 default:
101 usage();
102 }
103 }
104 argv += optind;
105 argc -= optind;
106
107 switch(argc) {
108 case 2: /* optional first argument is input file */
109 if (!freopen(*argv, "r", stdin) || fstat(fileno(stdin), &sb))
110 err(1, "%s", *argv);
111 #define RWX (S_IRWXU|S_IRWXG|S_IRWXO)
112 mode = sb.st_mode & RWX;
113 ++argv;
114 break;
115 case 1:
116 #define RW (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
117 mode = RW & ~umask(RW);
118 break;
119 case 0:
120 default:
121 usage();
122 }
123
124 av = argv;
125
126 if (outfile != NULL) {
127 output = fopen(outfile, "w+");
128 if (output == NULL)
129 err(1, "unable to open %s for output", outfile);
130 } else
131 output = stdout;
132 if (base64)
133 base64_encode();
134 else
135 encode();
136 if (ferror(output))
137 errx(1, "write error");
138 exit(0);
139 }
140
141 /* ENC is the basic 1 character encoding function to make a char printing */
142 #define ENC(c) ((c) ? ((c) & 077) + ' ': '`')
143
144 /*
145 * Copy from in to out, encoding in base64 as you go along.
146 */
147 static void
base64_encode(void)148 base64_encode(void)
149 {
150 /*
151 * Output must fit into 80 columns, chunks come in 4, leave 1.
152 */
153 #define GROUPS ((80 / 4) - 1)
154 unsigned char buf[3];
155 char buf2[sizeof(buf) * 2 + 1];
156 size_t n;
157 int rv, sequence;
158
159 sequence = 0;
160
161 if (!raw)
162 fprintf(output, "begin-base64 %o %s\n", mode, *av);
163 while ((n = fread(buf, 1, sizeof(buf), stdin))) {
164 ++sequence;
165 rv = b64_ntop(buf, n, buf2, nitems(buf2));
166 if (rv == -1)
167 errx(1, "b64_ntop: error encoding base64");
168 fprintf(output, "%s%s", buf2, (sequence % GROUPS) ? "" : "\n");
169 }
170 if (sequence % GROUPS)
171 fprintf(output, "\n");
172 if (!raw)
173 fprintf(output, "====\n");
174 }
175
176 /*
177 * Copy from in to out, encoding as you go along.
178 */
179 static void
encode(void)180 encode(void)
181 {
182 register int ch, n;
183 register char *p;
184 char buf[80];
185
186 if (!raw)
187 (void)fprintf(output, "begin %o %s\n", mode, *av);
188 while ((n = fread(buf, 1, 45, stdin))) {
189 ch = ENC(n);
190 if (fputc(ch, output) == EOF)
191 break;
192 for (p = buf; n > 0; n -= 3, p += 3) {
193 /* Pad with nulls if not a multiple of 3. */
194 if (n < 3) {
195 p[2] = '\0';
196 if (n < 2)
197 p[1] = '\0';
198 }
199 ch = *p >> 2;
200 ch = ENC(ch);
201 if (fputc(ch, output) == EOF)
202 break;
203 ch = ((*p << 4) & 060) | ((p[1] >> 4) & 017);
204 ch = ENC(ch);
205 if (fputc(ch, output) == EOF)
206 break;
207 ch = ((p[1] << 2) & 074) | ((p[2] >> 6) & 03);
208 ch = ENC(ch);
209 if (fputc(ch, output) == EOF)
210 break;
211 ch = p[2] & 077;
212 ch = ENC(ch);
213 if (fputc(ch, output) == EOF)
214 break;
215 }
216 if (fputc('\n', output) == EOF)
217 break;
218 }
219 if (ferror(stdin))
220 errx(1, "read error");
221 if (!raw)
222 (void)fprintf(output, "%c\nend\n", ENC('\0'));
223 }
224
225 static void
usage(void)226 usage(void)
227 {
228 (void)fprintf(stderr,
229 "usage: uuencode [-m] [-o outfile] [infile] remotefile\n"
230 " b64encode [-o outfile] [infile] remotefile\n");
231 exit(1);
232 }
233