1 /* $NetBSD: uuencode.c,v 1.9 2003/08/07 11:16:59 agc 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\n\ 35 The Regents of the University of California. All rights reserved.\n"); 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 1.9 2003/08/07 11:16:59 agc 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 <err.h> 54 #include <errno.h> 55 #include <locale.h> 56 #include <stdio.h> 57 #include <stdlib.h> 58 #include <string.h> 59 #include <unistd.h> 60 61 int main __P((int, char **)); 62 static void encode __P((void)); 63 static void usage __P((void)); 64 65 int 66 main(argc, argv) 67 int argc; 68 char *argv[]; 69 { 70 struct stat sb; 71 int mode; 72 73 mode = 0; 74 setlocale(LC_ALL, ""); 75 76 while (getopt(argc, argv, "") != -1) 77 usage(); 78 argv += optind; 79 argc -= optind; 80 81 switch(argc) { 82 case 2: /* optional first argument is input file */ 83 if (!freopen(*argv, "r", stdin) || fstat(fileno(stdin), &sb)) 84 err(1, "%s", *argv); 85 #define RWX (S_IRWXU|S_IRWXG|S_IRWXO) 86 mode = sb.st_mode & RWX; 87 ++argv; 88 break; 89 case 1: 90 #define RW (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) 91 mode = RW & ~umask(RW); 92 break; 93 case 0: 94 default: 95 usage(); 96 } 97 98 (void)printf("begin %o %s\n", mode, *argv); 99 encode(); 100 (void)printf("end\n"); 101 if (ferror(stdout)) 102 err(1, "write error"); 103 exit(0); 104 } 105 106 /* ENC is the basic 1 character encoding function to make a char printing */ 107 #define ENC(c) ((c) ? ((c) & 077) + ' ': '`') 108 109 /* 110 * copy from in to out, encoding as you go along. 111 */ 112 static void 113 encode() 114 { 115 int ch, n; 116 char *p; 117 char buf[80]; 118 119 while ((n = fread(buf, 1, 45, stdin)) > 0) { 120 ch = ENC(n); 121 if (putchar(ch) == EOF) 122 break; 123 for (p = buf; n > 0; n -= 3, p += 3) { 124 ch = *p >> 2; 125 ch = ENC(ch); 126 if (putchar(ch) == EOF) 127 break; 128 ch = ((*p << 4) & 060) | ((p[1] >> 4) & 017); 129 ch = ENC(ch); 130 if (putchar(ch) == EOF) 131 break; 132 ch = ((p[1] << 2) & 074) | ((p[2] >> 6) & 03); 133 ch = ENC(ch); 134 if (putchar(ch) == EOF) 135 break; 136 ch = p[2] & 077; 137 ch = ENC(ch); 138 if (putchar(ch) == EOF) 139 break; 140 } 141 if (putchar('\n') == EOF) 142 break; 143 } 144 if (ferror(stdin)) 145 err(1, "read error."); 146 ch = ENC('\0'); 147 (void)putchar(ch); 148 (void)putchar('\n'); 149 } 150 151 static void 152 usage() 153 { 154 (void)fprintf(stderr,"usage: uuencode [infile] remotefile\n"); 155 exit(1); 156 } 157