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 30 #if 0 31 #ifndef lint 32 static const char copyright[] = 33 "@(#) Copyright (c) 1983, 1993\n\ 34 The Regents of the University of California. All rights reserved.\n"; 35 #endif /* not lint */ 36 37 #ifndef lint 38 static char sccsid[] = "@(#)uuencode.c 8.2 (Berkeley) 4/2/94"; 39 #endif /* not lint */ 40 #endif 41 #include <sys/cdefs.h> 42 __FBSDID("$FreeBSD$"); 43 44 /* 45 * uuencode [input] output 46 * 47 * Encode a file so it can be mailed to a remote system. 48 */ 49 #include <sys/param.h> 50 #include <sys/socket.h> 51 #include <sys/stat.h> 52 53 #include <netinet/in.h> 54 55 #include <err.h> 56 #include <libgen.h> 57 #include <resolv.h> 58 #include <stdio.h> 59 #include <stdlib.h> 60 #include <string.h> 61 #include <unistd.h> 62 63 static void encode(void); 64 static void base64_encode(void); 65 static void usage(void); 66 67 static FILE *output; 68 static int mode; 69 static char raw = 0; 70 static char **av; 71 72 int 73 main(int argc, char *argv[]) 74 { 75 struct stat sb; 76 int base64; 77 int ch; 78 char *outfile; 79 80 base64 = 0; 81 outfile = NULL; 82 83 if (strcmp(basename(argv[0]), "b64encode") == 0) 84 base64 = 1; 85 86 while ((ch = getopt(argc, argv, "mo:r")) != -1) { 87 switch (ch) { 88 case 'm': 89 base64 = 1; 90 break; 91 case 'o': 92 outfile = optarg; 93 break; 94 case 'r': 95 raw = 1; 96 break; 97 case '?': 98 default: 99 usage(); 100 } 101 } 102 argv += optind; 103 argc -= optind; 104 105 switch(argc) { 106 case 2: /* optional first argument is input file */ 107 if (!freopen(*argv, "r", stdin) || fstat(fileno(stdin), &sb)) 108 err(1, "%s", *argv); 109 #define RWX (S_IRWXU|S_IRWXG|S_IRWXO) 110 mode = sb.st_mode & RWX; 111 ++argv; 112 break; 113 case 1: 114 #define RW (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) 115 mode = RW & ~umask(RW); 116 break; 117 case 0: 118 default: 119 usage(); 120 } 121 122 av = argv; 123 124 if (outfile != NULL) { 125 output = fopen(outfile, "w+"); 126 if (output == NULL) 127 err(1, "unable to open %s for output", outfile); 128 } else 129 output = stdout; 130 if (base64) 131 base64_encode(); 132 else 133 encode(); 134 if (ferror(output)) 135 errx(1, "write error"); 136 exit(0); 137 } 138 139 /* ENC is the basic 1 character encoding function to make a char printing */ 140 #define ENC(c) ((c) ? ((c) & 077) + ' ': '`') 141 142 /* 143 * Copy from in to out, encoding in base64 as you go along. 144 */ 145 static void 146 base64_encode(void) 147 { 148 /* 149 * Output must fit into 80 columns, chunks come in 4, leave 1. 150 */ 151 #define GROUPS ((80 / 4) - 1) 152 unsigned char buf[3]; 153 char buf2[sizeof(buf) * 2 + 1]; 154 size_t n; 155 int rv, sequence; 156 157 sequence = 0; 158 159 if (!raw) 160 fprintf(output, "begin-base64 %o %s\n", mode, *av); 161 while ((n = fread(buf, 1, sizeof(buf), stdin))) { 162 ++sequence; 163 rv = b64_ntop(buf, n, buf2, nitems(buf2)); 164 if (rv == -1) 165 errx(1, "b64_ntop: error encoding base64"); 166 fprintf(output, "%s%s", buf2, (sequence % GROUPS) ? "" : "\n"); 167 } 168 if (sequence % GROUPS) 169 fprintf(output, "\n"); 170 if (!raw) 171 fprintf(output, "====\n"); 172 } 173 174 /* 175 * Copy from in to out, encoding as you go along. 176 */ 177 static void 178 encode(void) 179 { 180 register int ch, n; 181 register char *p; 182 char buf[80]; 183 184 if (!raw) 185 (void)fprintf(output, "begin %o %s\n", mode, *av); 186 while ((n = fread(buf, 1, 45, stdin))) { 187 ch = ENC(n); 188 if (fputc(ch, output) == EOF) 189 break; 190 for (p = buf; n > 0; n -= 3, p += 3) { 191 /* Pad with nulls if not a multiple of 3. */ 192 if (n < 3) { 193 p[2] = '\0'; 194 if (n < 2) 195 p[1] = '\0'; 196 } 197 ch = *p >> 2; 198 ch = ENC(ch); 199 if (fputc(ch, output) == EOF) 200 break; 201 ch = ((*p << 4) & 060) | ((p[1] >> 4) & 017); 202 ch = ENC(ch); 203 if (fputc(ch, output) == EOF) 204 break; 205 ch = ((p[1] << 2) & 074) | ((p[2] >> 6) & 03); 206 ch = ENC(ch); 207 if (fputc(ch, output) == EOF) 208 break; 209 ch = p[2] & 077; 210 ch = ENC(ch); 211 if (fputc(ch, output) == EOF) 212 break; 213 } 214 if (fputc('\n', output) == EOF) 215 break; 216 } 217 if (ferror(stdin)) 218 errx(1, "read error"); 219 if (!raw) 220 (void)fprintf(output, "%c\nend\n", ENC('\0')); 221 } 222 223 static void 224 usage(void) 225 { 226 (void)fprintf(stderr, 227 "usage: uuencode [-m] [-o outfile] [infile] remotefile\n" 228 " b64encode [-o outfile] [infile] remotefile\n"); 229 exit(1); 230 } 231