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 75 main(int argc, char *argv[]) 76 { 77 struct stat sb; 78 int base64; 79 int ch; 80 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 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 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 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