2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 static const char copyright[] =
36 "@(#) Copyright (c) 1992, 1993\n\
37 The Regents of the University of California. All rights reserved.\n";
42 static char sccsid[] = "@(#)cap_mkdb.c 8.1 (Berkeley) 6/6/93";
44 static const char rcsid[] =
45 "$FreeBSD: src/usr.bin/cap_mkdb/cap_mkdb.c,v 1.6.2.2 2001/08/02 01:15:51 obrien Exp $";
48 #include <sys/param.h>
59 int main __P((int, char *[]));
60 void db_build __P((char **));
61 void dounlink __P((void));
62 void usage __P((void));
66 char *capdb, *capname, buf[8 * 1024];
69 * Mkcapdb creates a capability hash database for quick retrieval of capability
70 * records. The database contains 2 types of entries: records and references
71 * marked by the first byte in the data. A record entry contains the actual
72 * capability record whereas a reference contains the name (key) under which
73 * the correct record is stored.
83 while ((c = getopt(argc, argv, "f:v")) != -1) {
103 * The database file is the first argument if no name is specified.
104 * Make arrangements to unlink it if exit badly.
106 (void)snprintf(buf, sizeof(buf), "%s.db", capname ? capname : *argv);
107 if ((capname = strdup(buf)) == NULL)
108 errx(1, "strdup failed");
109 if ((capdbp = dbopen(capname,
110 O_CREAT | O_TRUNC | O_RDWR, DEFFILEMODE, DB_HASH, NULL)) == NULL)
113 if (atexit(dounlink))
118 if (capdbp->close(capdbp) < 0)
119 err(1, "%s", capname);
128 (void)unlink(capname);
132 * Any changes to these definitions should be made also in the getcap(3)
135 #define RECOK (char)0
136 #define TCERR (char)1
137 #define SHADOW (char)2
140 * Db_build() builds the name and capability databases according to the
155 for (reccnt = 0, bplen = 0; (st = cgetnext(&bp, ifiles)) > 0;) {
158 * Allocate enough memory to store record, terminating
159 * NULL and one extra byte.
162 if (bplen <= len + 2) {
163 bplen += MAX(256, len + 2);
164 if ((data.data = realloc(data.data, bplen)) == NULL)
165 errx(1, "malloc failed");
168 /* Find the end of the name field. */
169 if ((p = strchr(bp, ':')) == NULL) {
170 warnx("no name field: %.*s", (int)MIN(len, 20), bp);
174 /* First byte of stored record indicates status. */
177 ((char *)(data.data))[0] = RECOK;
180 ((char *)(data.data))[0] = TCERR;
181 warnx("record not tc expanded: %.*s", (int)(p - bp),
186 /* Create the stored record. */
187 memmove(&((u_char *)(data.data))[1], bp, len + 1);
190 /* Store the record under the name field. */
194 switch(capdbp->put(capdbp, &key, &data, R_NOOVERWRITE)) {
199 warnx("ignored duplicate: %.*s",
200 (int)key.size, (char *)key.data);
205 /* If only one name, ignore the rest. */
207 if (strchr(bp, '|') == NULL)
211 /* The rest of the names reference the entire name. */
212 ((char *)(data.data))[0] = SHADOW;
213 memmove(&((u_char *)(data.data))[1], key.data, key.size);
214 data.size = key.size + 1;
216 /* Store references for other names. */
217 for (p = t = bp;; ++p) {
218 if (p > t && (*p == ':' || *p == '|')) {
221 switch(capdbp->put(capdbp,
222 &key, &data, R_NOOVERWRITE)) {
227 warnx("ignored duplicate: %.*s",
228 (int)key.size, (char *)key.data);
239 err(1, "file argument");
242 errx(1, "potential reference loop detected");
247 (void)printf("cap_mkdb: %d capability records\n", reccnt);
253 (void)fprintf(stderr,
254 "usage: cap_mkdb [-v] [-f outfile] file [file ...]\n");