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Annotation of src/usr.bin/cksum/cksum.c, Revision 1.11

1.11    ! deraadt     1: /*     $OpenBSD: cksum.c,v 1.10 2003/06/03 02:56:06 millert Exp $      */
1.1       deraadt     2: /*     $NetBSD: cksum.c,v 1.7 1995/09/02 05:45:18 jtc Exp $    */
                      3:
                      4: /*-
                      5:  * Copyright (c) 1991, 1993
                      6:  *     The Regents of the University of California.  All rights reserved.
                      7:  *
                      8:  * This code is derived from software contributed to Berkeley by
                      9:  * James W. Williams of NASA Goddard Space Flight Center.
                     10:  *
                     11:  * Redistribution and use in source and binary forms, with or without
                     12:  * modification, are permitted provided that the following conditions
                     13:  * are met:
                     14:  * 1. Redistributions of source code must retain the above copyright
                     15:  *    notice, this list of conditions and the following disclaimer.
                     16:  * 2. Redistributions in binary form must reproduce the above copyright
                     17:  *    notice, this list of conditions and the following disclaimer in the
                     18:  *    documentation and/or other materials provided with the distribution.
1.10      millert    19:  * 3. Neither the name of the University nor the names of its contributors
1.1       deraadt    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: #ifndef lint
                     37: static char copyright[] =
                     38: "@(#) Copyright (c) 1991, 1993\n\
                     39:        The Regents of the University of California.  All rights reserved.\n";
                     40: #endif /* not lint */
                     41:
                     42: #ifndef lint
                     43: #if 0
                     44: static char sccsid[] = "@(#)cksum.c    8.2 (Berkeley) 4/28/95";
                     45: #endif
1.11    ! deraadt    46: static char rcsid[] = "$OpenBSD: cksum.c,v 1.10 2003/06/03 02:56:06 millert Exp $";
1.1       deraadt    47: #endif /* not lint */
                     48:
                     49: #include <sys/types.h>
                     50:
                     51: #include <err.h>
                     52: #include <errno.h>
                     53: #include <fcntl.h>
                     54: #include <stdio.h>
                     55: #include <stdlib.h>
                     56: #include <string.h>
                     57: #include <unistd.h>
1.4       grr        58: #include <locale.h>
1.1       deraadt    59:
                     60: #include "extern.h"
                     61:
1.8       millert    62: void usage(void);
1.1       deraadt    63:
1.5       aaron      64: extern char *__progname;
                     65:
1.1       deraadt    66: int
1.11    ! deraadt    67: main(int argc, char *argv[])
1.1       deraadt    68: {
1.7       mpech      69:        int ch, fd, rval;
1.1       deraadt    70:        u_int32_t len, val;
                     71:        char *fn;
1.8       millert    72:        int (*cfncn)(int, u_int32_t *, u_int32_t *);
                     73:        void (*pfncn)(char *, u_int32_t, u_int32_t);
1.3       deraadt    74:
                     75:        setlocale(LC_ALL, "");
1.1       deraadt    76:
                     77:        if (!strcmp(__progname, "sum")) {
                     78:                cfncn = csum1;
                     79:                pfncn = psum1;
                     80:        } else {
                     81:                cfncn = crc;
                     82:                pfncn = pcrc;
                     83:        }
                     84:
                     85:        while ((ch = getopt(argc, argv, "o:")) != -1)
                     86:                switch(ch) {
                     87:                case 'o':
                     88:                        if (!strcmp(optarg, "1")) {
                     89:                                cfncn = csum1;
                     90:                                pfncn = psum1;
                     91:                        } else if (!strcmp(optarg, "2")) {
                     92:                                cfncn = csum2;
                     93:                                pfncn = psum2;
                     94:                        } else {
                     95:                                warnx("illegal argument to -o option");
                     96:                                usage();
                     97:                        }
                     98:                        break;
                     99:                case '?':
                    100:                default:
                    101:                        usage();
                    102:                }
                    103:        argc -= optind;
                    104:        argv += optind;
                    105:
                    106:        fd = STDIN_FILENO;
                    107:        fn = NULL;
                    108:        rval = 0;
                    109:        do {
                    110:                if (*argv) {
                    111:                        fn = *argv++;
                    112:                        if ((fd = open(fn, O_RDONLY, 0)) < 0) {
                    113:                                warn("%s", fn);
                    114:                                rval = 1;
                    115:                                continue;
                    116:                        }
                    117:                }
                    118:                if (cfncn(fd, &val, &len)) {
                    119:                        warn("%s", fn ? fn : "stdin");
                    120:                        rval = 1;
                    121:                } else
                    122:                        pfncn(fn, val, len);
                    123:                (void)close(fd);
                    124:        } while (*argv);
                    125:        exit(rval);
                    126: }
                    127:
                    128: void
1.11    ! deraadt   129: usage(void)
1.1       deraadt   130: {
1.6       aaron     131:        if (!strcmp(__progname, "cksum"))
                    132:                (void)fprintf(stderr, "usage: cksum [-o 1 | 2] [file ...]\n");
                    133:        else
                    134:                (void)fprintf(stderr, "usage: %s [file ...]\n", __progname);
1.1       deraadt   135:        exit(1);
                    136: }