1 /* $NetBSD: uuencode.c,v 1.7 1994/11/17 07:41:15 jtc 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 char copyright[] = 37 "@(#) Copyright (c) 1983, 1993\n\ 38 The Regents of the University of California. All rights reserved.\n"; 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)uuencode.c 8.2 (Berkeley) 4/2/94"; 43 #endif 44 static char rcsid[] = "$NetBSD: uuencode.c,v 1.7 1994/11/17 07:41:15 jtc Exp $"; 45 #endif /* not lint */ 46 47 /* 48 * uuencode [input] output 49 * 50 * Encode a file so it can be mailed to a remote system. 51 */ 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <string.h> 55 #include <locale.h> 56 #include <errno.h> 57 #include <sys/types.h> 58 #include <sys/stat.h> 59 #include <unistd.h> 60 61 static void encode(); 62 static __dead void usage(); 63 64 int 65 main(argc, argv) 66 int argc; 67 char *argv[]; 68 { 69 struct stat sb; 70 int mode; 71 72 setlocale(LC_ALL, ""); 73 74 while (getopt(argc, argv, "") != -1) 75 usage(); 76 argv += optind; 77 argc -= optind; 78 79 switch(argc) { 80 case 2: /* optional first argument is input file */ 81 if (!freopen(*argv, "r", stdin) || fstat(fileno(stdin), &sb)) { 82 (void)fprintf(stderr, "uuencode: %s: %s.\n", 83 *argv, strerror(errno)); 84 exit(1); 85 } 86 #define RWX (S_IRWXU|S_IRWXG|S_IRWXO) 87 mode = sb.st_mode & RWX; 88 ++argv; 89 break; 90 case 1: 91 #define RW (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) 92 mode = RW & ~umask(RW); 93 break; 94 case 0: 95 default: 96 usage(); 97 } 98 99 (void)printf("begin %o %s\n", mode, *argv); 100 encode(); 101 (void)printf("end\n"); 102 if (ferror(stdout)) { 103 (void)fprintf(stderr, "uuencode: write error.\n"); 104 exit(1); 105 } 106 exit(0); 107 } 108 109 /* ENC is the basic 1 character encoding function to make a char printing */ 110 #define ENC(c) ((c) ? ((c) & 077) + ' ': '`') 111 112 /* 113 * copy from in to out, encoding as you go along. 114 */ 115 static void 116 encode() 117 { 118 register int ch, n; 119 register char *p; 120 char buf[80]; 121 122 while (n = fread(buf, 1, 45, stdin)) { 123 ch = ENC(n); 124 if (putchar(ch) == EOF) 125 break; 126 for (p = buf; n > 0; n -= 3, p += 3) { 127 ch = *p >> 2; 128 ch = ENC(ch); 129 if (putchar(ch) == EOF) 130 break; 131 ch = (*p << 4) & 060 | (p[1] >> 4) & 017; 132 ch = ENC(ch); 133 if (putchar(ch) == EOF) 134 break; 135 ch = (p[1] << 2) & 074 | (p[2] >> 6) & 03; 136 ch = ENC(ch); 137 if (putchar(ch) == EOF) 138 break; 139 ch = p[2] & 077; 140 ch = ENC(ch); 141 if (putchar(ch) == EOF) 142 break; 143 } 144 if (putchar('\n') == EOF) 145 break; 146 } 147 if (ferror(stdin)) { 148 (void)fprintf(stderr, "uuencode: read error.\n"); 149 exit(1); 150 } 151 ch = ENC('\0'); 152 (void)putchar(ch); 153 (void)putchar('\n'); 154 } 155 156 static void 157 usage() 158 { 159 (void)fprintf(stderr,"usage: uuencode [infile] remotefile\n"); 160 exit(1); 161 } 162