1 /* $OpenBSD: option.c,v 1.18 2009/10/27 23:59:38 deraadt Exp $ */ 2 3 /*- 4 * Copyright (c) 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Cimarron D. Taylor of the University of California, Berkeley. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/types.h> 36 #include <sys/stat.h> 37 38 #include <err.h> 39 #include <fts.h> 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <string.h> 43 44 #include "find.h" 45 #include "extern.h" 46 47 int typecompare(const void *, const void *); 48 49 /* NB: the following table must be sorted lexically. */ 50 static OPTION options[] = { 51 { "!", N_NOT, c_not, O_ZERO }, 52 { "(", N_OPENPAREN, c_openparen, O_ZERO }, 53 { ")", N_CLOSEPAREN, c_closeparen, O_ZERO }, 54 { "-a", N_AND, NULL, O_NONE }, 55 { "-amin", N_AMIN, c_amin, O_ARGV }, 56 { "-and", N_AND, NULL, O_NONE }, 57 { "-anewer", N_ANEWER, c_anewer, O_ARGV }, 58 { "-atime", N_ATIME, c_atime, O_ARGV }, 59 { "-cmin", N_CMIN, c_cmin, O_ARGV }, 60 { "-cnewer", N_CNEWER, c_cnewer, O_ARGV }, 61 { "-ctime", N_CTIME, c_ctime, O_ARGV }, 62 { "-depth", N_DEPTH, c_depth, O_ZERO }, 63 { "-empty", N_EMPTY, c_empty, O_ZERO }, 64 { "-exec", N_EXEC, c_exec, O_ARGVP }, 65 { "-execdir", N_EXECDIR, c_execdir, O_ARGVP }, 66 { "-flags", N_FLAGS, c_flags, O_ARGV }, 67 { "-follow", N_FOLLOW, c_follow, O_ZERO }, 68 { "-fstype", N_FSTYPE, c_fstype, O_ARGV }, 69 { "-group", N_GROUP, c_group, O_ARGV }, 70 { "-iname", N_INAME, c_iname, O_ARGV }, 71 { "-inum", N_INUM, c_inum, O_ARGV }, 72 { "-links", N_LINKS, c_links, O_ARGV }, 73 { "-ls", N_LS, c_ls, O_ZERO }, 74 { "-maxdepth", N_MAXDEPTH, c_maxdepth, O_ARGV }, 75 { "-mindepth", N_MINDEPTH, c_mindepth, O_ARGV }, 76 { "-mmin", N_MMIN, c_mmin, O_ARGV }, 77 { "-mount", N_XDEV, c_xdev, O_ZERO }, 78 { "-mtime", N_MTIME, c_mtime, O_ARGV }, 79 { "-name", N_NAME, c_name, O_ARGV }, 80 { "-newer", N_NEWER, c_newer, O_ARGV }, 81 { "-nogroup", N_NOGROUP, c_nogroup, O_ZERO }, 82 { "-nouser", N_NOUSER, c_nouser, O_ZERO }, 83 { "-o", N_OR, c_or, O_ZERO }, 84 { "-ok", N_OK, c_exec, O_ARGVP }, 85 { "-or", N_OR, c_or, O_ZERO }, 86 { "-path", N_PATH, c_path, O_ARGV }, 87 { "-perm", N_PERM, c_perm, O_ARGV }, 88 { "-print", N_PRINT, c_print, O_ZERO }, 89 { "-print0", N_PRINT0, c_print0, O_ZERO }, 90 { "-prune", N_PRUNE, c_prune, O_ZERO }, 91 { "-size", N_SIZE, c_size, O_ARGV }, 92 { "-type", N_TYPE, c_type, O_ARGV }, 93 { "-user", N_USER, c_user, O_ARGV }, 94 { "-xdev", N_XDEV, c_xdev, O_ZERO }, 95 }; 96 97 /* 98 * find_create -- 99 * create a node corresponding to a command line argument. 100 * 101 * TODO: 102 * add create/process function pointers to node, so we can skip 103 * this switch stuff. 104 */ 105 PLAN * 106 find_create(char ***argvp) 107 { 108 OPTION *p; 109 PLAN *new; 110 char **argv; 111 112 argv = *argvp; 113 114 if ((p = option(*argv)) == NULL) 115 errx(1, "%s: unknown option", *argv); 116 ++argv; 117 if (p->flags & (O_ARGV|O_ARGVP) && !*argv) 118 errx(1, "%s: requires additional arguments", *--argv); 119 120 switch(p->flags) { 121 case O_NONE: 122 new = NULL; 123 break; 124 case O_ZERO: 125 new = (p->create)(NULL, NULL, 0); 126 break; 127 case O_ARGV: 128 new = (p->create)(*argv++, NULL, 0); 129 break; 130 case O_ARGVP: 131 new = (p->create)(NULL, &argv, p->token == N_OK); 132 break; 133 default: 134 abort(); 135 } 136 *argvp = argv; 137 return (new); 138 } 139 140 OPTION * 141 option(char *name) 142 { 143 OPTION tmp; 144 145 tmp.name = name; 146 return ((OPTION *)bsearch(&tmp, options, 147 sizeof(options)/sizeof(OPTION), sizeof(OPTION), typecompare)); 148 } 149 150 int 151 typecompare(const void *a, const void *b) 152 { 153 return (strcmp(((OPTION *)a)->name, ((OPTION *)b)->name)); 154 } 155