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 */ 33 34 /* 35 * uuencode [input] output 36 * 37 * Encode a file so it can be mailed to a remote system. 38 */ 39 #include <sys/param.h> 40 #include <sys/socket.h> 41 #include <sys/stat.h> 42 43 #include <netinet/in.h> 44 45 #include <err.h> 46 #include <libgen.h> 47 #include <resolv.h> 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <string.h> 51 #include <unistd.h> 52 53 static void encode(void); 54 static void base64_encode(void); 55 static void usage(void); 56 57 static FILE *output; 58 static int mode; 59 static char **av; 60 61 int 62 main(int argc, char *argv[]) 63 { 64 struct stat sb; 65 int base64; 66 int ch; 67 char *outfile; 68 69 base64 = 0; 70 outfile = NULL; 71 72 if (strcmp(basename(argv[0]), "b64encode") == 0) 73 base64 = 1; 74 75 while ((ch = getopt(argc, argv, "mo:")) != -1) { 76 switch (ch) { 77 case 'm': 78 base64 = 1; 79 break; 80 case 'o': 81 outfile = optarg; 82 break; 83 case '?': 84 default: 85 usage(); 86 } 87 } 88 argv += optind; 89 argc -= optind; 90 91 switch(argc) { 92 case 2: /* optional first argument is input file */ 93 if (!freopen(*argv, "r", stdin) || fstat(fileno(stdin), &sb)) 94 err(1, "%s", *argv); 95 #define RWX (S_IRWXU|S_IRWXG|S_IRWXO) 96 mode = sb.st_mode & RWX; 97 ++argv; 98 break; 99 case 1: 100 #define RW (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) 101 mode = RW & ~umask(RW); 102 break; 103 case 0: 104 default: 105 usage(); 106 } 107 108 av = argv; 109 110 if (outfile != NULL) { 111 output = fopen(outfile, "w+"); 112 if (output == NULL) 113 err(1, "unable to open %s for output", outfile); 114 } else 115 output = stdout; 116 if (base64) 117 base64_encode(); 118 else 119 encode(); 120 if (ferror(output)) 121 errx(1, "write error"); 122 exit(0); 123 } 124 125 /* ENC is the basic 1 character encoding function to make a char printing */ 126 #define ENC(c) ((c) ? ((c) & 077) + ' ': '`') 127 128 /* 129 * Copy from in to out, encoding in base64 as you go along. 130 */ 131 static void 132 base64_encode(void) 133 { 134 /* 135 * Output must fit into 80 columns, chunks come in 4, leave 1. 136 */ 137 #define GROUPS ((80 / 4) - 1) 138 unsigned char buf[3]; 139 char buf2[sizeof(buf) * 2 + 1]; 140 size_t n; 141 int rv, sequence; 142 143 sequence = 0; 144 145 fprintf(output, "begin-base64 %o %s\n", mode, *av); 146 while ((n = fread(buf, 1, sizeof(buf), stdin))) { 147 ++sequence; 148 rv = b64_ntop(buf, n, buf2, NELEM(buf2)); 149 if (rv == -1) 150 errx(1, "b64_ntop: error encoding base64"); 151 fprintf(output, "%s%s", buf2, (sequence % GROUPS) ? "" : "\n"); 152 } 153 if (sequence % GROUPS) 154 fprintf(output, "\n"); 155 fprintf(output, "====\n"); 156 } 157 158 /* 159 * Copy from in to out, encoding as you go along. 160 */ 161 static void 162 encode(void) 163 { 164 int ch, n; 165 char *p; 166 char buf[80]; 167 168 (void)fprintf(output, "begin %o %s\n", mode, *av); 169 while ((n = fread(buf, 1, 45, stdin))) { 170 ch = ENC(n); 171 if (fputc(ch, output) == EOF) 172 break; 173 for (p = buf; n > 0; n -= 3, p += 3) { 174 /* Pad with nulls if not a multiple of 3. */ 175 if (n < 3) { 176 p[2] = '\0'; 177 if (n < 2) 178 p[1] = '\0'; 179 } 180 ch = *p >> 2; 181 ch = ENC(ch); 182 if (fputc(ch, output) == EOF) 183 break; 184 ch = ((*p << 4) & 060) | ((p[1] >> 4) & 017); 185 ch = ENC(ch); 186 if (fputc(ch, output) == EOF) 187 break; 188 ch = ((p[1] << 2) & 074) | ((p[2] >> 6) & 03); 189 ch = ENC(ch); 190 if (fputc(ch, output) == EOF) 191 break; 192 ch = p[2] & 077; 193 ch = ENC(ch); 194 if (fputc(ch, output) == EOF) 195 break; 196 } 197 if (fputc('\n', output) == EOF) 198 break; 199 } 200 if (ferror(stdin)) 201 errx(1, "read error"); 202 (void)fprintf(output, "%c\nend\n", ENC('\0')); 203 } 204 205 static void 206 usage(void) 207 { 208 (void)fprintf(stderr, 209 "usage: uuencode [-m] [-o outfile] [infile] remotefile\n" 210 " b64encode [-o outfile] [infile] remotefile\n"); 211 exit(1); 212 } 213