1 /*- 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * James W. Williams of NASA Goddard Space Flight Center. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #ifndef lint 38 static const char copyright[] = 39 "@(#) Copyright (c) 1991, 1993\n\ 40 The Regents of the University of California. All rights reserved.\n"; 41 #endif /* not lint */ 42 43 #ifndef lint 44 #if 0 45 static char sccsid[] = "@(#)cksum.c 8.2 (Berkeley) 4/28/95"; 46 #endif 47 static const char rcsid[] = 48 "$Id: cksum.c,v 1.8 1997/11/09 05:47:55 obrien Exp $"; 49 #endif /* not lint */ 50 51 #include <sys/cdefs.h> 52 #include <sys/types.h> 53 54 #include <err.h> 55 #include <errno.h> 56 #include <fcntl.h> 57 #include <stdio.h> 58 #include <stdlib.h> 59 #include <string.h> 60 #include <unistd.h> 61 62 #include "extern.h" 63 64 static void usage __P((void)); 65 66 int 67 main(argc, argv) 68 int argc; 69 char **argv; 70 { 71 register int ch, fd, rval; 72 u_int32_t len, val; 73 char *fn, *p; 74 int (*cfncn) __P((int, u_int32_t *, u_int32_t *)); 75 void (*pfncn) __P((char *, u_int32_t, u_int32_t)); 76 77 if ((p = rindex(argv[0], '/')) == NULL) 78 p = argv[0]; 79 else 80 ++p; 81 if (!strcmp(p, "sum")) { 82 cfncn = csum1; 83 pfncn = psum1; 84 ++argv; 85 } else { 86 cfncn = crc; 87 pfncn = pcrc; 88 89 while ((ch = getopt(argc, argv, "o:")) != -1) 90 switch (ch) { 91 case 'o': 92 if (!strcmp(optarg, "1")) { 93 cfncn = csum1; 94 pfncn = psum1; 95 } else if (!strcmp(optarg, "2")) { 96 cfncn = csum2; 97 pfncn = psum2; 98 } else if (*optarg == '3') { 99 cfncn = crc32; 100 pfncn = pcrc; 101 } else { 102 warnx("illegal argument to -o option"); 103 usage(); 104 } 105 break; 106 case '?': 107 default: 108 usage(); 109 } 110 argc -= optind; 111 argv += optind; 112 } 113 114 fd = STDIN_FILENO; 115 fn = NULL; 116 rval = 0; 117 do { 118 if (*argv) { 119 fn = *argv++; 120 if ((fd = open(fn, O_RDONLY, 0)) < 0) { 121 warn("%s", fn); 122 rval = 1; 123 continue; 124 } 125 } 126 if (cfncn(fd, &val, &len)) { 127 warn("%s", fn ? fn : "stdin"); 128 rval = 1; 129 } else 130 pfncn(fn, val, len); 131 (void)close(fd); 132 } while (*argv); 133 exit(rval); 134 } 135 136 static void 137 usage() 138 { 139 (void)fprintf(stderr, "usage: cksum [-o 1 | 2] [file ...]\n"); 140 (void)fprintf(stderr, " sum [file ...]\n"); 141 exit(1); 142 } 143