1 /* $NetBSD: uuencode.c,v 1.14 2008/11/29 22:36:13 dholland Exp $ */ 2 3 /*- 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1983, 1993\ 35 The Regents of the University of California. All rights reserved."); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)uuencode.c 8.2 (Berkeley) 4/2/94"; 41 #else 42 __RCSID("$NetBSD: uuencode.c,v 1.14 2008/11/29 22:36:13 dholland Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 /* 47 * uuencode [input] output 48 * 49 * Encode a file so it can be mailed to a remote system. 50 */ 51 #include <sys/types.h> 52 #include <sys/stat.h> 53 #include <netinet/in.h> 54 #include <err.h> 55 #include <errno.h> 56 #include <locale.h> 57 #include <resolv.h> 58 #include <stdio.h> 59 #include <stdlib.h> 60 #include <string.h> 61 #include <unistd.h> 62 63 int main(int, char *[]); 64 static void encode(void); 65 static void base64_encode(void); 66 static void usage(void); 67 68 int 69 main(int argc, char *argv[]) 70 { 71 struct stat sb; 72 int base64, ch, mode; 73 74 mode = 0; 75 base64 = 0; 76 setlocale(LC_ALL, ""); 77 setprogname(argv[0]); 78 79 while ((ch = getopt(argc, argv, "m")) != -1) { 80 switch(ch) { 81 case 'm': 82 base64 = 1; 83 break; 84 default: 85 usage(); 86 } 87 } 88 argv += optind; 89 argc -= optind; 90 91 switch(argc) { 92 case 2: /* optional first argument is input file */ 93 if (!freopen(*argv, "r", stdin) || fstat(fileno(stdin), &sb)) 94 err(1, "%s", *argv); 95 #define RWX (S_IRWXU|S_IRWXG|S_IRWXO) 96 mode = sb.st_mode & RWX; 97 ++argv; 98 break; 99 case 1: 100 #define RW (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) 101 mode = RW & ~umask(RW); 102 break; 103 case 0: 104 default: 105 usage(); 106 } 107 108 if (base64) { 109 (void)printf("begin-base64 %o %s\n", mode, *argv); 110 base64_encode(); 111 (void)printf("====\n"); 112 } else { 113 (void)printf("begin %o %s\n", mode, *argv); 114 encode(); 115 (void)printf("end\n"); 116 } 117 118 if (ferror(stdout)) 119 err(1, "write error"); 120 exit(0); 121 } 122 123 /* ENC is the basic 1 character encoding function to make a char printing */ 124 #define ENC(c) ((c) ? ((c) & 077) + ' ': '`') 125 126 /* 127 * copy from in to out, encoding in base64 as you go along. 128 */ 129 static void 130 base64_encode(void) 131 { 132 /* 133 * Output must fit into 80 columns, chunks come in 4, leave 1. 134 */ 135 #define GROUPS ((70 / 4) - 1) 136 unsigned char buf[3]; 137 char buf2[sizeof(buf) * 2 + 1]; 138 size_t n; 139 int rv, sequence; 140 141 sequence = 0; 142 143 while ((n = fread(buf, 1, sizeof(buf), stdin))) { 144 ++sequence; 145 rv = b64_ntop(buf, n, buf2, (sizeof(buf2) / sizeof(buf2[0]))); 146 if (rv == -1) 147 errx(1, "b64_ntop: error encoding base64"); 148 printf("%s%s", buf2, (sequence % GROUPS) ? "" : "\n"); 149 } 150 if (sequence % GROUPS) 151 printf("\n"); 152 } 153 154 /* 155 * copy from in to out, encoding as you go along. 156 */ 157 static void 158 encode(void) 159 { 160 int ch, n; 161 char *p; 162 char buf[80]; 163 164 while ((n = fread(buf, 1, 45, stdin)) > 0) { 165 ch = ENC(n); 166 if (putchar(ch) == EOF) 167 break; 168 for (p = buf; n > 0; n -= 3, p += 3) { 169 ch = *p >> 2; 170 ch = ENC(ch); 171 if (putchar(ch) == EOF) 172 break; 173 ch = ((*p << 4) & 060) | ((p[1] >> 4) & 017); 174 ch = ENC(ch); 175 if (putchar(ch) == EOF) 176 break; 177 ch = ((p[1] << 2) & 074) | ((p[2] >> 6) & 03); 178 ch = ENC(ch); 179 if (putchar(ch) == EOF) 180 break; 181 ch = p[2] & 077; 182 ch = ENC(ch); 183 if (putchar(ch) == EOF) 184 break; 185 } 186 if (putchar('\n') == EOF) 187 break; 188 } 189 if (ferror(stdin)) 190 err(1, "read error."); 191 ch = ENC('\0'); 192 (void)putchar(ch); 193 (void)putchar('\n'); 194 } 195 196 static void 197 usage(void) 198 { 199 (void)fprintf(stderr, "usage: %s [-m] [inputfile] outputname\n", 200 getprogname()); 201 exit(1); 202 } 203