1 /* $OpenBSD: what.c,v 1.16 2020/04/18 15:10:06 martijn Exp $ */ 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. 16 * 3. Neither the name of the University nor the names of its contributors 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 33 #include <sys/types.h> 34 #include <sys/utsname.h> 35 #include <stdio.h> 36 #include <ctype.h> 37 #include <err.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <unistd.h> 41 42 static void search(char *); 43 static void usage(void); 44 45 static int matches; 46 static int sflag; 47 48 extern char *__progname; 49 50 /* 51 * what 52 */ 53 /* ARGSUSED */ 54 int 55 main(int argc, char *argv[]) 56 { 57 struct utsname utsn; 58 char match[256]; 59 int c; 60 61 if (pledge("stdio rpath", NULL) == -1) 62 err(1, "pledge"); 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; 76 77 if (uname(&utsn) == -1) 78 err(1, "uname"); 79 strlcpy(match, utsn.sysname, sizeof match); 80 81 if (argc < 1) { 82 usage(); 83 } else do { 84 if (!freopen(*argv, "r", stdin)) { 85 perror(*argv); 86 exit(matches ? 0 : 1); 87 } 88 printf("%s:\n", *argv); 89 search(match); 90 } while(*++argv); 91 exit(matches ? 0 : 1); 92 } 93 94 static void 95 search(char *match) 96 { 97 int c; 98 int i; 99 100 while ((c = getchar()) != EOF) { 101 loop: if (c == '$') { 102 for (i = 0; match[i]; i++) 103 if ((c = getchar()) != match[i]) 104 goto loop; 105 printf("\t$%s", match); 106 while (isprint(c = getchar())) { 107 putchar(c); 108 if (c == '$') 109 break; 110 } 111 putchar('\n'); 112 matches++; 113 if (sflag) 114 break; 115 goto loop; 116 } 117 if (c != '@') 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 != '"' && 127 c != '>' && c != '\n' && c != '\\') 128 putchar(c); 129 putchar('\n'); 130 matches++; 131 if (sflag) 132 break; 133 } 134 } 135 136 static void 137 usage(void) 138 { 139 140 (void)fprintf(stderr, "usage: %s [-s] file ...\n", __progname); 141 exit(1); 142 } 143