1 /*- 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#) Copyright (c) 1983, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)uuencode.c 8.2 (Berkeley) 4/2/94 35 * $FreeBSD: src/usr.bin/uuencode/uuencode.c,v 1.4.2.5 2002/10/21 11:52:15 fanf Exp $ 36 * $DragonFly: src/usr.bin/uuencode/uuencode.c,v 1.2 2003/06/17 04:29:33 dillon Exp $ 37 */ 38 39 /* 40 * uuencode [input] output 41 * 42 * Encode a file so it can be mailed to a remote system. 43 */ 44 #include <sys/param.h> 45 #include <sys/socket.h> 46 #include <sys/stat.h> 47 48 #include <netinet/in.h> 49 50 #include <err.h> 51 #include <libgen.h> 52 #include <resolv.h> 53 #include <stdio.h> 54 #include <stdlib.h> 55 #include <string.h> 56 #include <unistd.h> 57 58 void encode(void); 59 void base64_encode(void); 60 static void usage(void); 61 62 FILE *output; 63 int mode; 64 char **av; 65 66 int 67 main(int argc, char *argv[]) 68 { 69 struct stat sb; 70 int base64; 71 char ch; 72 char *outfile; 73 74 base64 = 0; 75 outfile = NULL; 76 77 if (strcmp(basename(argv[0]), "b64encode") == 0) 78 base64 = 1; 79 80 while ((ch = getopt(argc, argv, "mo:")) != -1) { 81 switch (ch) { 82 case 'm': 83 base64 = 1; 84 break; 85 case 'o': 86 outfile = optarg; 87 break; 88 case '?': 89 default: 90 usage(); 91 } 92 } 93 argv += optind; 94 argc -= optind; 95 96 switch(argc) { 97 case 2: /* optional first argument is input file */ 98 if (!freopen(*argv, "r", stdin) || fstat(fileno(stdin), &sb)) 99 err(1, "%s", *argv); 100 #define RWX (S_IRWXU|S_IRWXG|S_IRWXO) 101 mode = sb.st_mode & RWX; 102 ++argv; 103 break; 104 case 1: 105 #define RW (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) 106 mode = RW & ~umask(RW); 107 break; 108 case 0: 109 default: 110 usage(); 111 } 112 113 av = argv; 114 115 if (outfile != NULL) { 116 output = fopen(outfile, "w+"); 117 if (output == NULL) 118 err(1, "unable to open %s for output", outfile); 119 } else 120 output = stdout; 121 if (base64) 122 base64_encode(); 123 else 124 encode(); 125 if (ferror(output)) 126 errx(1, "write error"); 127 exit(0); 128 } 129 130 /* ENC is the basic 1 character encoding function to make a char printing */ 131 #define ENC(c) ((c) ? ((c) & 077) + ' ': '`') 132 133 /* 134 * Copy from in to out, encoding in base64 as you go along. 135 */ 136 void 137 base64_encode(void) 138 { 139 /* 140 * Output must fit into 80 columns, chunks come in 4, leave 1. 141 */ 142 #define GROUPS ((80 / 4) - 1) 143 unsigned char buf[3]; 144 char buf2[sizeof(buf) * 2 + 1]; 145 size_t n; 146 int rv, sequence; 147 148 sequence = 0; 149 150 fprintf(output, "begin-base64 %o %s\n", mode, *av); 151 while ((n = fread(buf, 1, sizeof(buf), stdin))) { 152 ++sequence; 153 rv = b64_ntop(buf, n, buf2, (sizeof(buf2) / sizeof(buf2[0]))); 154 if (rv == -1) 155 errx(1, "b64_ntop: error encoding base64"); 156 fprintf(output, "%s%s", buf2, (sequence % GROUPS) ? "" : "\n"); 157 } 158 if (sequence % GROUPS) 159 fprintf(output, "\n"); 160 fprintf(output, "====\n"); 161 } 162 163 /* 164 * Copy from in to out, encoding as you go along. 165 */ 166 void 167 encode(void) 168 { 169 register int ch, n; 170 register char *p; 171 char buf[80]; 172 173 (void)fprintf(output, "begin %o %s\n", mode, *av); 174 while ((n = fread(buf, 1, 45, stdin))) { 175 ch = ENC(n); 176 if (fputc(ch, output) == EOF) 177 break; 178 for (p = buf; n > 0; n -= 3, p += 3) { 179 /* Pad with nulls if not a multiple of 3. */ 180 if (n < 3) { 181 p[2] = '\0'; 182 if (n < 2) 183 p[1] = '\0'; 184 } 185 ch = *p >> 2; 186 ch = ENC(ch); 187 if (fputc(ch, output) == EOF) 188 break; 189 ch = ((*p << 4) & 060) | ((p[1] >> 4) & 017); 190 ch = ENC(ch); 191 if (fputc(ch, output) == EOF) 192 break; 193 ch = ((p[1] << 2) & 074) | ((p[2] >> 6) & 03); 194 ch = ENC(ch); 195 if (fputc(ch, output) == EOF) 196 break; 197 ch = p[2] & 077; 198 ch = ENC(ch); 199 if (fputc(ch, output) == EOF) 200 break; 201 } 202 if (fputc('\n', output) == EOF) 203 break; 204 } 205 if (ferror(stdin)) 206 errx(1, "read error"); 207 (void)fprintf(output, "%c\nend\n", ENC('\0')); 208 } 209 210 static void 211 usage(void) 212 { 213 (void)fprintf(stderr, 214 "usage: uuencode [-m] [-o outfile] [infile] remotefile\n" 215 " b64encode [-o outfile] [infile] remotefile\n"); 216 exit(1); 217 } 218