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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#) Copyright (c) 1983, 1993 The Regents of the University of California. All rights reserved. 30 * @(#)uuencode.c 8.2 (Berkeley) 4/2/94 31 * $FreeBSD: src/usr.bin/uuencode/uuencode.c,v 1.4.2.5 2002/10/21 11:52:15 fanf Exp $ 32 * $DragonFly: src/usr.bin/uuencode/uuencode.c,v 1.3 2004/12/24 15:13:56 liamfoy Exp $ 33 */ 34 35 /* 36 * uuencode [input] output 37 * 38 * Encode a file so it can be mailed to a remote system. 39 */ 40 #include <sys/param.h> 41 #include <sys/socket.h> 42 #include <sys/stat.h> 43 44 #include <netinet/in.h> 45 46 #include <err.h> 47 #include <libgen.h> 48 #include <resolv.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <unistd.h> 53 54 static void encode(void); 55 static void base64_encode(void); 56 static void usage(void); 57 58 static FILE *output; 59 static int mode; 60 static char **av; 61 62 int 63 main(int argc, char *argv[]) 64 { 65 struct stat sb; 66 int base64; 67 int ch; 68 char *outfile; 69 70 base64 = 0; 71 outfile = NULL; 72 73 if (strcmp(basename(argv[0]), "b64encode") == 0) 74 base64 = 1; 75 76 while ((ch = getopt(argc, argv, "mo:")) != -1) { 77 switch (ch) { 78 case 'm': 79 base64 = 1; 80 break; 81 case 'o': 82 outfile = optarg; 83 break; 84 case '?': 85 default: 86 usage(); 87 } 88 } 89 argv += optind; 90 argc -= optind; 91 92 switch(argc) { 93 case 2: /* optional first argument is input file */ 94 if (!freopen(*argv, "r", stdin) || fstat(fileno(stdin), &sb)) 95 err(1, "%s", *argv); 96 #define RWX (S_IRWXU|S_IRWXG|S_IRWXO) 97 mode = sb.st_mode & RWX; 98 ++argv; 99 break; 100 case 1: 101 #define RW (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) 102 mode = RW & ~umask(RW); 103 break; 104 case 0: 105 default: 106 usage(); 107 } 108 109 av = argv; 110 111 if (outfile != NULL) { 112 output = fopen(outfile, "w+"); 113 if (output == NULL) 114 err(1, "unable to open %s for output", outfile); 115 } else 116 output = stdout; 117 if (base64) 118 base64_encode(); 119 else 120 encode(); 121 if (ferror(output)) 122 errx(1, "write error"); 123 exit(0); 124 } 125 126 /* ENC is the basic 1 character encoding function to make a char printing */ 127 #define ENC(c) ((c) ? ((c) & 077) + ' ': '`') 128 129 /* 130 * Copy from in to out, encoding in base64 as you go along. 131 */ 132 static void 133 base64_encode(void) 134 { 135 /* 136 * Output must fit into 80 columns, chunks come in 4, leave 1. 137 */ 138 #define GROUPS ((80 / 4) - 1) 139 unsigned char buf[3]; 140 char buf2[sizeof(buf) * 2 + 1]; 141 size_t n; 142 int rv, sequence; 143 144 sequence = 0; 145 146 fprintf(output, "begin-base64 %o %s\n", mode, *av); 147 while ((n = fread(buf, 1, sizeof(buf), stdin))) { 148 ++sequence; 149 rv = b64_ntop(buf, n, buf2, (sizeof(buf2) / sizeof(buf2[0]))); 150 if (rv == -1) 151 errx(1, "b64_ntop: error encoding base64"); 152 fprintf(output, "%s%s", buf2, (sequence % GROUPS) ? "" : "\n"); 153 } 154 if (sequence % GROUPS) 155 fprintf(output, "\n"); 156 fprintf(output, "====\n"); 157 } 158 159 /* 160 * Copy from in to out, encoding as you go along. 161 */ 162 static void 163 encode(void) 164 { 165 int ch, n; 166 char *p; 167 char buf[80]; 168 169 (void)fprintf(output, "begin %o %s\n", mode, *av); 170 while ((n = fread(buf, 1, 45, stdin))) { 171 ch = ENC(n); 172 if (fputc(ch, output) == EOF) 173 break; 174 for (p = buf; n > 0; n -= 3, p += 3) { 175 /* Pad with nulls if not a multiple of 3. */ 176 if (n < 3) { 177 p[2] = '\0'; 178 if (n < 2) 179 p[1] = '\0'; 180 } 181 ch = *p >> 2; 182 ch = ENC(ch); 183 if (fputc(ch, output) == EOF) 184 break; 185 ch = ((*p << 4) & 060) | ((p[1] >> 4) & 017); 186 ch = ENC(ch); 187 if (fputc(ch, output) == EOF) 188 break; 189 ch = ((p[1] << 2) & 074) | ((p[2] >> 6) & 03); 190 ch = ENC(ch); 191 if (fputc(ch, output) == EOF) 192 break; 193 ch = p[2] & 077; 194 ch = ENC(ch); 195 if (fputc(ch, output) == EOF) 196 break; 197 } 198 if (fputc('\n', output) == EOF) 199 break; 200 } 201 if (ferror(stdin)) 202 errx(1, "read error"); 203 (void)fprintf(output, "%c\nend\n", ENC('\0')); 204 } 205 206 static void 207 usage(void) 208 { 209 (void)fprintf(stderr, 210 "usage: uuencode [-m] [-o outfile] [infile] remotefile\n" 211 " b64encode [-o outfile] [infile] remotefile\n"); 212 exit(1); 213 } 214