Annotation of src/usr.bin/what/what.c, Revision 1.15
1.15 ! deraadt 1: /* $OpenBSD: what.c,v 1.14 2015/10/06 13:47:08 deraadt Exp $ */
1.1 deraadt 2: /* $NetBSD: what.c,v 1.4 1994/12/20 16:01:03 jtc Exp $ */
3:
4: /*
5: * Copyright (c) 1980, 1988, 1993
6: * The Regents of the University of California. All rights reserved.
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.
1.9 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
1.3 deraadt 33: #include <sys/types.h>
34: #include <sys/utsname.h>
1.1 deraadt 35: #include <stdio.h>
1.3 deraadt 36: #include <ctype.h>
1.5 art 37: #include <err.h>
1.11 david 38: #include <stdlib.h>
1.5 art 39: #include <string.h>
1.8 nino 40: #include <unistd.h>
1.1 deraadt 41:
1.8 nino 42: static void search(char *);
43: static void usage(void);
44:
45: static int matches;
46: static int sflag;
47:
48: extern char *__progname;
1.1 deraadt 49:
50: /*
51: * what
52: */
53: /* ARGSUSED */
54: int
1.10 deraadt 55: main(int argc, char *argv[])
1.1 deraadt 56: {
1.3 deraadt 57: struct utsname utsn;
58: char match[256];
1.8 nino 59: int c;
1.14 deraadt 60:
1.15 ! deraadt 61: if (pledge("stdio rpath", NULL) == -1)
! 62: err(1, "pledge");
1.8 nino 63:
64: matches = sflag = 0;
65: while ((c = getopt(argc, argv, "s")) != -1) {
66: switch (c) {
67: case 's':
68: sflag = 1;
69: break;
70: default:
71: usage();
72: }
73: }
74: argc -= optind;
75: argv += optind;
1.3 deraadt 76:
77: if (uname(&utsn) == -1)
78: err(1, "uname");
1.8 nino 79: strlcpy(match, utsn.sysname, sizeof match);
1.3 deraadt 80:
1.8 nino 81: if (argc < 1) {
82: usage();
83: } else do {
1.1 deraadt 84: if (!freopen(*argv, "r", stdin)) {
85: perror(*argv);
1.8 nino 86: exit(matches ? 0 : 1);
1.1 deraadt 87: }
88: printf("%s\n", *argv);
1.3 deraadt 89: search(match);
1.1 deraadt 90: } while(*++argv);
1.8 nino 91: exit(matches ? 0 : 1);
1.1 deraadt 92: }
93:
1.8 nino 94: static void
1.10 deraadt 95: search(char *match)
1.1 deraadt 96: {
1.6 mpech 97: int c;
1.3 deraadt 98: int i;
1.1 deraadt 99:
100: while ((c = getchar()) != EOF) {
1.3 deraadt 101: loop: if (c == '$') {
102: for (i = 0; match[i]; i++)
103: if ((c = getchar()) != match[i])
104: goto loop;
1.4 deraadt 105: printf("\t$%s", match);
1.13 krw 106: while (isprint(c = getchar())) {
1.3 deraadt 107: putchar(c);
1.13 krw 108: if (c == '$')
109: break;
110: }
1.3 deraadt 111: putchar('\n');
1.8 nino 112: matches++;
113: if (sflag)
114: break;
1.3 deraadt 115: goto loop;
116: }
117: if (c != '@')
1.1 deraadt 118: continue;
119: if ((c = getchar()) != '(')
120: goto loop;
121: if ((c = getchar()) != '#')
122: goto loop;
123: if ((c = getchar()) != ')')
124: goto loop;
125: putchar('\t');
126: while ((c = getchar()) != EOF && c && c != '"' &&
1.8 nino 127: c != '>' && c != '\n' && c != '\\')
1.1 deraadt 128: putchar(c);
129: putchar('\n');
1.8 nino 130: matches++;
131: if (sflag)
132: break;
1.1 deraadt 133: }
1.8 nino 134: }
135:
136: static void
1.10 deraadt 137: usage(void)
1.8 nino 138: {
139:
140: (void)fprintf(stderr, "usage: %s [-s] file ...\n", __progname);
141: exit(1);
1.1 deraadt 142: }
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