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 #ifndef lint 35 static const char copyright[] = 36 "@(#) Copyright (c) 1983, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)uuencode.c 8.2 (Berkeley) 4/2/94"; 43 #endif 44 static const char rcsid[] = 45 "$FreeBSD$"; 46 #endif /* not lint */ 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 <resolv.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <string.h> 64 #include <unistd.h> 65 66 void encode __P((void)); 67 void base64_encode __P((void)); 68 static void usage __P((void)); 69 70 FILE *output; 71 int mode; 72 char **av; 73 74 int 75 main(argc, argv) 76 int argc; 77 char *argv[]; 78 { 79 struct stat sb; 80 int base64; 81 char ch; 82 char *outfile; 83 84 base64 = 0; 85 outfile = NULL; 86 87 while ((ch = getopt(argc, argv, "mo:")) != -1) { 88 switch (ch) { 89 case 'm': 90 base64 = 1; 91 break; 92 case 'o': 93 outfile = optarg; 94 break; 95 case '?': 96 default: 97 usage(); 98 } 99 } 100 argv += optind; 101 argc -= optind; 102 103 switch(argc) { 104 case 2: /* optional first argument is input file */ 105 if (!freopen(*argv, "r", stdin) || fstat(fileno(stdin), &sb)) 106 err(1, "%s", *argv); 107 #define RWX (S_IRWXU|S_IRWXG|S_IRWXO) 108 mode = sb.st_mode & RWX; 109 ++argv; 110 break; 111 case 1: 112 #define RW (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) 113 mode = RW & ~umask(RW); 114 break; 115 case 0: 116 default: 117 usage(); 118 } 119 120 av = argv; 121 122 if (outfile != NULL) { 123 output = fopen(outfile, "w+"); 124 if (output == NULL) 125 err(1, "unable to open %s for output", outfile); 126 } else 127 output = stdout; 128 if (base64) 129 base64_encode(); 130 else 131 encode(); 132 if (ferror(output)) 133 errx(1, "write error"); 134 exit(0); 135 } 136 137 /* ENC is the basic 1 character encoding function to make a char printing */ 138 #define ENC(c) ((c) ? ((c) & 077) + ' ': '`') 139 140 /* 141 * Copy from in to out, encoding in base64 as you go along. 142 */ 143 void 144 base64_encode() 145 { 146 #define GROUPS 8 /* Group output chunks */ 147 unsigned char buf[6]; 148 char buf2[16]; 149 size_t n; 150 int rv, sequence; 151 152 sequence = 0; 153 154 fprintf(output, "begin-base64 %o %s\n", mode, *av); 155 while ((n = fread(buf, 1, sizeof(buf), stdin))) { 156 ++sequence; 157 rv = b64_ntop(buf, n, buf2, (sizeof(buf2) / sizeof(buf2[0]))); 158 if (rv == -1) 159 errx(1, "b64_ntop: error encoding base64"); 160 fprintf(output, "%s%s", buf2, (sequence % GROUPS) ? "" : "\n"); 161 } 162 if (sequence % GROUPS) 163 fprintf(output, "\n"); 164 fprintf(output, "====\n"); 165 } 166 167 /* 168 * Copy from in to out, encoding as you go along. 169 */ 170 void 171 encode() 172 { 173 register int ch, n; 174 register char *p; 175 char buf[80]; 176 177 (void)fprintf(output, "begin %o %s\n", mode, *av); 178 while ((n = fread(buf, 1, 45, stdin))) { 179 ch = ENC(n); 180 if (fputc(ch, output) == EOF) 181 break; 182 for (p = buf; n > 0; n -= 3, p += 3) { 183 /* Pad with nulls if not a multiple of 3. */ 184 if (n < 3) { 185 p[2] = '\0'; 186 if (n < 2) 187 p[1] = '\0'; 188 } 189 ch = *p >> 2; 190 ch = ENC(ch); 191 if (fputc(ch, output) == EOF) 192 break; 193 ch = ((*p << 4) & 060) | ((p[1] >> 4) & 017); 194 ch = ENC(ch); 195 if (fputc(ch, output) == EOF) 196 break; 197 ch = ((p[1] << 2) & 074) | ((p[2] >> 6) & 03); 198 ch = ENC(ch); 199 if (fputc(ch, output) == EOF) 200 break; 201 ch = p[2] & 077; 202 ch = ENC(ch); 203 if (fputc(ch, output) == EOF) 204 break; 205 } 206 if (fputc('\n', output) == EOF) 207 break; 208 } 209 if (ferror(stdin)) 210 errx(1, "read error"); 211 (void)fprintf(output, "%c\nend\n", ENC('\0')); 212 } 213 214 static void 215 usage() 216 { 217 (void)fprintf(stderr,"usage: uuencode [-m] [-o outfile] [infile] remotefile\n"); 218 exit(1); 219 } 220