1 /* $NetBSD: misc.c,v 1.35 2024/12/05 17:17:43 christos Exp $ */
2
3 /*-
4 * Copyright (c) 1991, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * @(#)misc.c 8.1 (Berkeley) 6/6/93
32 */
33
34 #if HAVE_NBTOOL_CONFIG_H
35 #include "nbtool_config.h"
36 #endif
37
38 #include <sys/cdefs.h>
39 #if defined(__RCSID) && !defined(lint)
40 __RCSID("$NetBSD: misc.c,v 1.35 2024/12/05 17:17:43 christos Exp $");
41 #endif /* not lint */
42
43 #include <sys/types.h>
44 #include <sys/stat.h>
45
46 #include <stdarg.h>
47 #include <stdio.h>
48 #include <stdlib.h>
49 #include <string.h>
50
51 #include "extern.h"
52
53 enum flavor flavor = F_MTREE;
54
55 typedef struct _key {
56 const char *name; /* key name */
57 u_int val; /* value */
58
59 #define NEEDVALUE 0x01
60 u_int flags;
61 } KEY;
62
63 /* NB: the following tables must be sorted lexically. */
64 static KEY keylist[] = {
65 {"cksum", F_CKSUM, NEEDVALUE},
66 {"device", F_DEV, NEEDVALUE},
67 {"flags", F_FLAGS, NEEDVALUE},
68 {"gid", F_GID, NEEDVALUE},
69 {"gname", F_GNAME, NEEDVALUE},
70 {"ignore", F_IGN, 0},
71 {"link", F_SLINK, NEEDVALUE},
72 {"md5", F_MD5, NEEDVALUE},
73 {"md5digest", F_MD5, NEEDVALUE},
74 {"mode", F_MODE, NEEDVALUE},
75 {"nlink", F_NLINK, NEEDVALUE},
76 {"nochange", F_NOCHANGE, 0},
77 {"optional", F_OPT, 0},
78 {"ripemd160digest", F_RMD160, NEEDVALUE},
79 {"rmd160", F_RMD160, NEEDVALUE},
80 {"rmd160digest",F_RMD160, NEEDVALUE},
81 {"sha1", F_SHA1, NEEDVALUE},
82 {"sha1digest", F_SHA1, NEEDVALUE},
83 {"sha256", F_SHA256, NEEDVALUE},
84 {"sha256digest",F_SHA256, NEEDVALUE},
85 {"sha384", F_SHA384, NEEDVALUE},
86 {"sha384digest",F_SHA384, NEEDVALUE},
87 {"sha512", F_SHA512, NEEDVALUE},
88 {"sha512digest",F_SHA512, NEEDVALUE},
89 {"size", F_SIZE, NEEDVALUE},
90 {"tags", F_TAGS, NEEDVALUE},
91 {"time", F_TIME, NEEDVALUE},
92 {"type", F_TYPE, NEEDVALUE},
93 {"uid", F_UID, NEEDVALUE},
94 {"uname", F_UNAME, NEEDVALUE}
95 };
96
97 static KEY typelist[] = {
98 {"block", F_BLOCK, 0},
99 {"char", F_CHAR, 0},
100 {"dir", F_DIR, 0},
101 #ifdef S_IFDOOR
102 {"door", F_DOOR, 0},
103 #endif
104 {"fifo", F_FIFO, 0},
105 {"file", F_FILE, 0},
106 {"link", F_LINK, 0},
107 {"socket", F_SOCK, 0},
108 };
109
110 slist_t excludetags, includetags;
111 int keys = KEYDEFAULT;
112
113
114 static int keycompare(const void *, const void *);
115
116 u_int
parsekey(const char * name,int * needvaluep)117 parsekey(const char *name, int *needvaluep)
118 {
119 static int allbits;
120 KEY *k, tmp;
121
122 if (allbits == 0) {
123 size_t i;
124
125 for (i = 0; i < sizeof(keylist) / sizeof(KEY); i++)
126 allbits |= keylist[i].val;
127 }
128 tmp.name = name;
129 if (strcmp(name, "all") == 0)
130 return (allbits);
131 k = (KEY *)bsearch(&tmp, keylist, sizeof(keylist) / sizeof(KEY),
132 sizeof(KEY), keycompare);
133 if (k == NULL)
134 mtree_err("unknown keyword `%s'", name);
135
136 if (needvaluep)
137 *needvaluep = k->flags & NEEDVALUE ? 1 : 0;
138
139 return (k->val);
140 }
141
142 u_int
parsetype(const char * name)143 parsetype(const char *name)
144 {
145 KEY *k, tmp;
146
147 tmp.name = name;
148 k = (KEY *)bsearch(&tmp, typelist, sizeof(typelist) / sizeof(KEY),
149 sizeof(KEY), keycompare);
150 if (k == NULL)
151 mtree_err("unknown file type `%s'", name);
152
153 return (k->val);
154 }
155
156 static int
keycompare(const void * a,const void * b)157 keycompare(const void *a, const void *b)
158 {
159
160 return (strcmp(((const KEY *)a)->name, ((const KEY *)b)->name));
161 }
162
163 void
mtree_err(const char * fmt,...)164 mtree_err(const char *fmt, ...)
165 {
166 va_list ap;
167
168 va_start(ap, fmt);
169 vwarnx(fmt, ap);
170 va_end(ap);
171 if (mtree_lineno)
172 warnx("failed at line %lu of the specification",
173 (u_long) mtree_lineno);
174 exit(1);
175 /* NOTREACHED */
176 }
177
178 void
addtag(slist_t * list,char * elem)179 addtag(slist_t *list, char *elem)
180 {
181
182 #define TAG_CHUNK 20
183
184 if ((list->count % TAG_CHUNK) == 0) {
185 char **new;
186
187 new = (char **)realloc(list->list, (list->count + TAG_CHUNK)
188 * sizeof(char *));
189 if (new == NULL)
190 mtree_err("memory allocation error");
191 list->list = new;
192 }
193 list->list[list->count] = elem;
194 list->count++;
195 }
196
197 void
parsetags(slist_t * list,char * args)198 parsetags(slist_t *list, char *args)
199 {
200 char *p, *e;
201 size_t len;
202
203 if (args == NULL) {
204 addtag(list, NULL);
205 return;
206 }
207 while ((p = strsep(&args, ",")) != NULL) {
208 if (*p == '\0')
209 continue;
210 len = strlen(p) + 3; /* "," + p + ",\0" */
211 if ((e = malloc(len)) == NULL)
212 mtree_err("memory allocation error");
213 snprintf(e, len, ",%s,", p);
214 addtag(list, e);
215 }
216 }
217
218 /*
219 * matchtags
220 * returns 0 if there's a match from the exclude list in the node's tags,
221 * or there's an include list and no match.
222 * return 1 otherwise.
223 */
224 int
matchtags(NODE * node)225 matchtags(NODE *node)
226 {
227 int i;
228
229 if (node->tags) {
230 for (i = 0; i < excludetags.count; i++)
231 if (strstr(node->tags, excludetags.list[i]))
232 break;
233 if (i < excludetags.count)
234 return (0);
235
236 for (i = 0; i < includetags.count; i++)
237 if (strstr(node->tags, includetags.list[i]))
238 break;
239 if (i > 0 && i == includetags.count)
240 return (0);
241 } else if (includetags.count > 0) {
242 return (0);
243 }
244 return (1);
245 }
246
247 u_int
nodetoino(u_int type)248 nodetoino(u_int type)
249 {
250
251 switch (type) {
252 case F_BLOCK:
253 return S_IFBLK;
254 case F_CHAR:
255 return S_IFCHR;
256 case F_DIR:
257 return S_IFDIR;
258 case F_FIFO:
259 return S_IFIFO;
260 case F_FILE:
261 return S_IFREG;
262 case F_LINK:
263 return S_IFLNK;
264 #ifdef S_IFSOCK
265 case F_SOCK:
266 return S_IFSOCK;
267 #endif
268 default:
269 printf("unknown type %d", type);
270 abort();
271 }
272 /* NOTREACHED */
273 }
274
275 const char *
nodetype(u_int type)276 nodetype(u_int type)
277 {
278
279 return (inotype(nodetoino(type)));
280 }
281
282
283 const char *
inotype(u_int type)284 inotype(u_int type)
285 {
286
287 switch (type & S_IFMT) {
288 case S_IFBLK:
289 return ("block");
290 case S_IFCHR:
291 return ("char");
292 case S_IFDIR:
293 return ("dir");
294 case S_IFIFO:
295 return ("fifo");
296 case S_IFREG:
297 return ("file");
298 case S_IFLNK:
299 return ("link");
300 #ifdef S_IFSOCK
301 case S_IFSOCK:
302 return ("socket");
303 #endif
304 #ifdef S_IFDOOR
305 case S_IFDOOR:
306 return ("door");
307 #endif
308 default:
309 return ("unknown");
310 }
311 /* NOTREACHED */
312 }
313