uuencode.c revision 96438
11573Srgrimes/*- 21573Srgrimes * Copyright (c) 1983, 1993 31573Srgrimes * The Regents of the University of California. All rights reserved. 41573Srgrimes * 51573Srgrimes * Redistribution and use in source and binary forms, with or without 61573Srgrimes * modification, are permitted provided that the following conditions 71573Srgrimes * are met: 81573Srgrimes * 1. Redistributions of source code must retain the above copyright 91573Srgrimes * notice, this list of conditions and the following disclaimer. 101573Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111573Srgrimes * notice, this list of conditions and the following disclaimer in the 121573Srgrimes * documentation and/or other materials provided with the distribution. 131573Srgrimes * 3. All advertising materials mentioning features or use of this software 141573Srgrimes * must display the following acknowledgement: 151573Srgrimes * This product includes software developed by the University of 161573Srgrimes * California, Berkeley and its contributors. 171573Srgrimes * 4. Neither the name of the University nor the names of its contributors 181573Srgrimes * may be used to endorse or promote products derived from this software 191573Srgrimes * without specific prior written permission. 201573Srgrimes * 211573Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221573Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231573Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241573Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251573Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261573Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271573Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281573Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291573Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301573Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311573Srgrimes * SUCH DAMAGE. 321573Srgrimes */ 3350476Speter 341573Srgrimes#ifndef lint 351573Srgrimesstatic const char copyright[] = 361573Srgrimes"@(#) Copyright (c) 1983, 1993\n\ 371573Srgrimes The Regents of the University of California. All rights reserved.\n"; 381573Srgrimes#endif /* not lint */ 391573Srgrimes 401573Srgrimes#if 0 4159510Sphantom#ifndef lint 4259510Sphantomstatic char sccsid[] = "@(#)uuencode.c 8.2 (Berkeley) 4/2/94"; 431573Srgrimes#endif /* not lint */ 4484306Sru#endif 4584306Sru 4655463Sbde#include <sys/cdefs.h> 4784306Sru__FBSDID("$FreeBSD: head/usr.bin/uuencode/uuencode.c 96438 2002-05-12 03:56:34Z mike $"); 4855463Sbde 491573Srgrimes/* 501573Srgrimes * uuencode [input] output 511573Srgrimes * 521573Srgrimes * Encode a file so it can be mailed to a remote system. 53112539Scharnier */ 541573Srgrimes#include <sys/param.h> 55112539Scharnier#include <sys/socket.h> 5671895Sru#include <sys/stat.h> 571573Srgrimes 581573Srgrimes#include <netinet/in.h> 591573Srgrimes 601573Srgrimes#include <err.h> 611573Srgrimes#include <resolv.h> 62131504Sru#include <stdio.h> 63131504Sru#include <stdlib.h> 641573Srgrimes#include <string.h> 6586857Sru#include <unistd.h> 661573Srgrimes 671573Srgrimesvoid encode(void); 681573Srgrimesvoid base64_encode(void); 691573Srgrimesstatic void usage(void); 70131504Sru 71131504SruFILE *output; 721573Srgrimesint mode; 731573Srgrimeschar **av; 74112539Scharnier 751573Srgrimesint 76112539Scharniermain(int argc, char *argv[]) 771573Srgrimes{ 781573Srgrimes struct stat sb; 7921907Swosch int base64; 8021907Swosch char ch; 8121907Swosch char *outfile; 821573Srgrimes 831573Srgrimes base64 = 0; 841573Srgrimes outfile = NULL; 8521907Swosch 86140505Sru while ((ch = getopt(argc, argv, "mo:")) != -1) { 87140505Sru switch (ch) { 88 case 'm': 89 base64 = 1; 90 break; 91 case 'o': 92 outfile = optarg; 93 break; 94 case '?': 95 default: 96 usage(); 97 } 98 } 99 argv += optind; 100 argc -= optind; 101 102 switch(argc) { 103 case 2: /* optional first argument is input file */ 104 if (!freopen(*argv, "r", stdin) || fstat(fileno(stdin), &sb)) 105 err(1, "%s", *argv); 106#define RWX (S_IRWXU|S_IRWXG|S_IRWXO) 107 mode = sb.st_mode & RWX; 108 ++argv; 109 break; 110 case 1: 111#define RW (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) 112 mode = RW & ~umask(RW); 113 break; 114 case 0: 115 default: 116 usage(); 117 } 118 119 av = argv; 120 121 if (outfile != NULL) { 122 output = fopen(outfile, "w+"); 123 if (output == NULL) 124 err(1, "unable to open %s for output", outfile); 125 } else 126 output = stdout; 127 if (base64) 128 base64_encode(); 129 else 130 encode(); 131 if (ferror(output)) 132 errx(1, "write error"); 133 exit(0); 134} 135 136/* ENC is the basic 1 character encoding function to make a char printing */ 137#define ENC(c) ((c) ? ((c) & 077) + ' ': '`') 138 139/* 140 * Copy from in to out, encoding in base64 as you go along. 141 */ 142void 143base64_encode(void) 144{ 145#define GROUPS 8 /* Group output chunks */ 146 unsigned char buf[6]; 147 char buf2[16]; 148 size_t n; 149 int rv, sequence; 150 151 sequence = 0; 152 153 fprintf(output, "begin-base64 %o %s\n", mode, *av); 154 while ((n = fread(buf, 1, sizeof(buf), stdin))) { 155 ++sequence; 156 rv = b64_ntop(buf, n, buf2, (sizeof(buf2) / sizeof(buf2[0]))); 157 if (rv == -1) 158 errx(1, "b64_ntop: error encoding base64"); 159 fprintf(output, "%s%s", buf2, (sequence % GROUPS) ? "" : "\n"); 160 } 161 if (sequence % GROUPS) 162 fprintf(output, "\n"); 163 fprintf(output, "====\n"); 164} 165 166/* 167 * Copy from in to out, encoding as you go along. 168 */ 169void 170encode(void) 171{ 172 register int ch, n; 173 register char *p; 174 char buf[80]; 175 176 (void)fprintf(output, "begin %o %s\n", mode, *av); 177 while ((n = fread(buf, 1, 45, stdin))) { 178 ch = ENC(n); 179 if (fputc(ch, output) == EOF) 180 break; 181 for (p = buf; n > 0; n -= 3, p += 3) { 182 /* Pad with nulls if not a multiple of 3. */ 183 if (n < 3) { 184 p[2] = '\0'; 185 if (n < 2) 186 p[1] = '\0'; 187 } 188 ch = *p >> 2; 189 ch = ENC(ch); 190 if (fputc(ch, output) == EOF) 191 break; 192 ch = ((*p << 4) & 060) | ((p[1] >> 4) & 017); 193 ch = ENC(ch); 194 if (fputc(ch, output) == EOF) 195 break; 196 ch = ((p[1] << 2) & 074) | ((p[2] >> 6) & 03); 197 ch = ENC(ch); 198 if (fputc(ch, output) == EOF) 199 break; 200 ch = p[2] & 077; 201 ch = ENC(ch); 202 if (fputc(ch, output) == EOF) 203 break; 204 } 205 if (fputc('\n', output) == EOF) 206 break; 207 } 208 if (ferror(stdin)) 209 errx(1, "read error"); 210 (void)fprintf(output, "%c\nend\n", ENC('\0')); 211} 212 213static void 214usage(void) 215{ 216 (void)fprintf(stderr,"usage: uuencode [-m] [-o outfile] [infile] remotefile\n"); 217 exit(1); 218} 219