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 * 4. 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 **av; 70 71 int 72 main(int argc, char *argv[]) 73 { 74 struct stat sb; 75 int base64; 76 int ch; 77 char *outfile; 78 79 base64 = 0; 80 outfile = NULL; 81 82 if (strcmp(basename(argv[0]), "b64encode") == 0) 83 base64 = 1; 84 85 while ((ch = getopt(argc, argv, "mo:")) != -1) { 86 switch (ch) { 87 case 'm': 88 base64 = 1; 89 break; 90 case 'o': 91 outfile = optarg; 92 break; 93 case '?': 94 default: 95 usage(); 96 } 97 } 98 argv += optind; 99 argc -= optind; 100 101 switch(argc) { 102 case 2: /* optional first argument is input file */ 103 if (!freopen(*argv, "r", stdin) || fstat(fileno(stdin), &sb)) 104 err(1, "%s", *argv); 105 #define RWX (S_IRWXU|S_IRWXG|S_IRWXO) 106 mode = sb.st_mode & RWX; 107 ++argv; 108 break; 109 case 1: 110 #define RW (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) 111 mode = RW & ~umask(RW); 112 break; 113 case 0: 114 default: 115 usage(); 116 } 117 118 av = argv; 119 120 if (outfile != NULL) { 121 output = fopen(outfile, "w+"); 122 if (output == NULL) 123 err(1, "unable to open %s for output", outfile); 124 } else 125 output = stdout; 126 if (base64) 127 base64_encode(); 128 else 129 encode(); 130 if (ferror(output)) 131 errx(1, "write error"); 132 exit(0); 133 } 134 135 /* ENC is the basic 1 character encoding function to make a char printing */ 136 #define ENC(c) ((c) ? ((c) & 077) + ' ': '`') 137 138 /* 139 * Copy from in to out, encoding in base64 as you go along. 140 */ 141 static void 142 base64_encode(void) 143 { 144 /* 145 * Output must fit into 80 columns, chunks come in 4, leave 1. 146 */ 147 #define GROUPS ((80 / 4) - 1) 148 unsigned char buf[3]; 149 char buf2[sizeof(buf) * 2 + 1]; 150 size_t n; 151 int rv, sequence; 152 153 sequence = 0; 154 155 fprintf(output, "begin-base64 %o %s\n", mode, *av); 156 while ((n = fread(buf, 1, sizeof(buf), stdin))) { 157 ++sequence; 158 rv = b64_ntop(buf, n, buf2, (sizeof(buf2) / sizeof(buf2[0]))); 159 if (rv == -1) 160 errx(1, "b64_ntop: error encoding base64"); 161 fprintf(output, "%s%s", buf2, (sequence % GROUPS) ? "" : "\n"); 162 } 163 if (sequence % GROUPS) 164 fprintf(output, "\n"); 165 fprintf(output, "====\n"); 166 } 167 168 /* 169 * Copy from in to out, encoding as you go along. 170 */ 171 static void 172 encode(void) 173 { 174 register int ch, n; 175 register char *p; 176 char buf[80]; 177 178 (void)fprintf(output, "begin %o %s\n", mode, *av); 179 while ((n = fread(buf, 1, 45, stdin))) { 180 ch = ENC(n); 181 if (fputc(ch, output) == EOF) 182 break; 183 for (p = buf; n > 0; n -= 3, p += 3) { 184 /* Pad with nulls if not a multiple of 3. */ 185 if (n < 3) { 186 p[2] = '\0'; 187 if (n < 2) 188 p[1] = '\0'; 189 } 190 ch = *p >> 2; 191 ch = ENC(ch); 192 if (fputc(ch, output) == EOF) 193 break; 194 ch = ((*p << 4) & 060) | ((p[1] >> 4) & 017); 195 ch = ENC(ch); 196 if (fputc(ch, output) == EOF) 197 break; 198 ch = ((p[1] << 2) & 074) | ((p[2] >> 6) & 03); 199 ch = ENC(ch); 200 if (fputc(ch, output) == EOF) 201 break; 202 ch = p[2] & 077; 203 ch = ENC(ch); 204 if (fputc(ch, output) == EOF) 205 break; 206 } 207 if (fputc('\n', output) == EOF) 208 break; 209 } 210 if (ferror(stdin)) 211 errx(1, "read error"); 212 (void)fprintf(output, "%c\nend\n", ENC('\0')); 213 } 214 215 static void 216 usage(void) 217 { 218 (void)fprintf(stderr, 219 "usage: uuencode [-m] [-o outfile] [infile] remotefile\n" 220 " b64encode [-o outfile] [infile] remotefile\n"); 221 exit(1); 222 } 223