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 34 #if 0 35 #ifndef lint 36 static const char copyright[] = 37 "@(#) Copyright (c) 1983, 1993\n\ 38 The Regents of the University of California. All rights reserved.\n"; 39 #endif /* not lint */ 40 41 #ifndef lint 42 static char sccsid[] = "@(#)uuencode.c 8.2 (Berkeley) 4/2/94"; 43 #endif /* not lint */ 44 #endif 45 #include <sys/cdefs.h> 46 __FBSDID("$FreeBSD$"); 47 48 /* 49 * uuencode [input] output 50 * 51 * Encode a file so it can be mailed to a remote system. 52 */ 53 #include <sys/param.h> 54 #include <sys/socket.h> 55 #include <sys/stat.h> 56 57 #include <netinet/in.h> 58 59 #include <err.h> 60 #include <libgen.h> 61 #include <resolv.h> 62 #include <stdio.h> 63 #include <stdlib.h> 64 #include <string.h> 65 #include <unistd.h> 66 67 void encode(void); 68 void base64_encode(void); 69 static void usage(void); 70 71 FILE *output; 72 int mode; 73 char **av; 74 75 int 76 main(int argc, char *argv[]) 77 { 78 struct stat sb; 79 int base64; 80 char ch; 81 char *outfile; 82 83 base64 = 0; 84 outfile = NULL; 85 86 if (strcmp(basename(argv[0]), "b64encode") == 0) 87 base64 = 1; 88 89 while ((ch = getopt(argc, argv, "mo:")) != -1) { 90 switch (ch) { 91 case 'm': 92 base64 = 1; 93 break; 94 case 'o': 95 outfile = optarg; 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 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 fprintf(output, "begin-base64 %o %s\n", mode, *av); 160 while ((n = fread(buf, 1, sizeof(buf), stdin))) { 161 ++sequence; 162 rv = b64_ntop(buf, n, buf2, (sizeof(buf2) / sizeof(buf2[0]))); 163 if (rv == -1) 164 errx(1, "b64_ntop: error encoding base64"); 165 fprintf(output, "%s%s", buf2, (sequence % GROUPS) ? "" : "\n"); 166 } 167 if (sequence % GROUPS) 168 fprintf(output, "\n"); 169 fprintf(output, "====\n"); 170 } 171 172 /* 173 * Copy from in to out, encoding as you go along. 174 */ 175 void 176 encode(void) 177 { 178 register int ch, n; 179 register char *p; 180 char buf[80]; 181 182 (void)fprintf(output, "begin %o %s\n", mode, *av); 183 while ((n = fread(buf, 1, 45, stdin))) { 184 ch = ENC(n); 185 if (fputc(ch, output) == EOF) 186 break; 187 for (p = buf; n > 0; n -= 3, p += 3) { 188 /* Pad with nulls if not a multiple of 3. */ 189 if (n < 3) { 190 p[2] = '\0'; 191 if (n < 2) 192 p[1] = '\0'; 193 } 194 ch = *p >> 2; 195 ch = ENC(ch); 196 if (fputc(ch, output) == EOF) 197 break; 198 ch = ((*p << 4) & 060) | ((p[1] >> 4) & 017); 199 ch = ENC(ch); 200 if (fputc(ch, output) == EOF) 201 break; 202 ch = ((p[1] << 2) & 074) | ((p[2] >> 6) & 03); 203 ch = ENC(ch); 204 if (fputc(ch, output) == EOF) 205 break; 206 ch = p[2] & 077; 207 ch = ENC(ch); 208 if (fputc(ch, output) == EOF) 209 break; 210 } 211 if (fputc('\n', output) == EOF) 212 break; 213 } 214 if (ferror(stdin)) 215 errx(1, "read error"); 216 (void)fprintf(output, "%c\nend\n", ENC('\0')); 217 } 218 219 static void 220 usage(void) 221 { 222 (void)fprintf(stderr, 223 "usage: uuencode [-m] [-o outfile] [infile] remotefile\n" 224 " b64encode [-o outfile] [infile] remotefile\n"); 225 exit(1); 226 } 227