1 /* $NetBSD: services_mkdb.c,v 1.14 2008/04/28 20:24:17 martin Exp $ */
4 * SPDX-License-Identifier: BSD-2-Clause-NetBSD
6 * Copyright (c) 1999 The NetBSD Foundation, Inc.
9 * This code is derived from software contributed to The NetBSD Foundation
10 * by Luke Mewburn and Christos Zoulas.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
37 #include <sys/param.h>
53 #include <stringlist.h>
57 static char tname[MAXPATHLEN];
62 static void add(DB *, StringList *, size_t, const char *, size_t *, int);
63 static StringList ***parseservices(const char *, StringList *);
64 static void cleanup(void);
65 static void store(DB *, DBT *, DBT *, int);
66 static void killproto(DBT *);
67 static char *getstring(const char *, size_t, char **, const char *);
68 static size_t getprotoindex(StringList *, const char *);
69 static const char *getprotostr(StringList *, size_t);
70 static const char *mkaliases(StringList *, char *, size_t);
71 static void usage(void);
84 main(int argc, char *argv[])
88 const char *fname = _PATH_SERVICES;
89 const char *dbname = _PATH_SERVICES_DB;
95 StringList *sl, ***svc;
97 char *dbname_dir, *dbname_dirbuf;
98 int dbname_dir_fd = -1;
100 setprogname(argv[0]);
102 while ((ch = getopt(argc, argv, "blo:qu")) != -1)
108 byteorder = ch == 'b' ? 4321 : 1234;
129 if (argc > 1 || (unique && otherflag))
134 /* Set byte order. */
135 hinfo.lorder = byteorder;
140 svc = parseservices(fname, sl = sl_init());
143 err(1, "Cannot install exit handler");
145 (void)snprintf(tname, sizeof(tname), "%s.tmp", dbname);
146 db = dbopen(tname, O_RDWR | O_CREAT | O_EXCL,
147 (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH), DB_HASH, &hinfo);
149 err(1, "Error opening temporary database `%s'", tname);
152 for (port = 0; port < PMASK + 1; port++) {
153 if (svc[port] == NULL)
156 for (proto = 0; proto < PROTOMAX; proto++) {
158 if ((s = svc[port][proto]) == NULL)
160 add(db, s, port, getprotostr(sl, proto), &cnt, warndup);
170 err(1, "Error closing temporary database `%s'", tname);
173 * Make sure file is safe on disk. To improve performance we will call
174 * fsync() to the directory where file lies
176 if (rename(tname, dbname) == -1 ||
177 (dbname_dirbuf = strdup(dbname)) == NULL ||
178 (dbname_dir = dirname(dbname_dirbuf)) == NULL ||
179 (dbname_dir_fd = open(dbname_dir, O_RDONLY|O_DIRECTORY)) == -1 ||
180 fsync(dbname_dir_fd) != 0) {
181 if (dbname_dir_fd != -1)
182 close(dbname_dir_fd);
183 err(1, "Cannot rename `%s' to `%s'", tname, dbname);
186 if (dbname_dir_fd != -1)
187 close(dbname_dir_fd);
193 add(DB *db, StringList *sl, size_t port, const char *proto, size_t *cnt,
197 char keyb[BUFSIZ], datab[BUFSIZ], abuf[BUFSIZ];
203 (void)printf("add %s %zu %s [ ", sl->sl_str[0], port, proto);
204 for (i = 1; i < sl->sl_cur; i++)
205 (void)printf("%s ", sl->sl_str[i]);
209 /* key `indirect key', data `full line' */
210 data.size = snprintf(datab, sizeof(datab), "%zu", (*cnt)++) + 1;
211 key.size = snprintf(keyb, sizeof(keyb), "%s %zu/%s %s",
212 sl->sl_str[0], port, proto, mkaliases(sl, abuf, sizeof(abuf))) + 1;
213 store(db, &data, &key, warndup);
215 /* key `\377port/proto', data = `indirect key' */
216 key.size = snprintf(keyb, sizeof(keyb), "\377%zu/%s",
218 store(db, &key, &data, warndup);
220 /* key `\377port', data = `indirect key' */
222 store(db, &key, &data, warndup);
224 /* add references for service and all aliases */
225 for (i = 0; i < sl->sl_cur; i++) {
226 /* key `\376service/proto', data = `indirect key' */
227 key.size = snprintf(keyb, sizeof(keyb), "\376%s/%s",
228 sl->sl_str[i], proto) + 1;
229 store(db, &key, &data, warndup);
231 /* key `\376service', data = `indirect key' */
233 store(db, &key, &data, warndup);
238 static StringList ***
239 parseservices(const char *fname, StringList *sl)
242 size_t linecap, line, pindex;
244 StringList ***svc, *s;
247 if ((fp = fopen(fname, "r")) == NULL)
248 err(1, "Cannot open `%s'", fname);
251 if ((svc = calloc(PMASK + 1, sizeof(StringList **))) == NULL)
252 err(1, "Cannot allocate %zu bytes", (size_t)(PMASK + 1));
255 while ((len = getline(&p, &linecap, fp)) != -1) {
256 char *name, *port, *proto, *aliases, *cp, *alias;
264 if (p[len - 1] == '\n')
267 for (cp = p; *cp && isspace((unsigned char)*cp); cp++)
270 if (*cp == '\0' || *cp == '#')
273 if ((name = getstring(fname, line, &cp, "name")) == NULL)
276 if ((port = getstring(fname, line, &cp, "port")) == NULL)
280 for (aliases = cp; *cp && *cp != '#'; cp++)
288 proto = strchr(port, '/');
289 if (proto == NULL || proto[1] == '\0') {
290 warnx("%s, %zu: no protocol found", fname, line);
296 pnum = strtoul(port, &ep, 0);
297 if (*port == '\0' || *ep != '\0') {
298 warnx("%s, %zu: invalid port `%s'", fname, line, port);
301 if ((errno == ERANGE && pnum == ULONG_MAX) || pnum > PMASK) {
302 warnx("%s, %zu: port too big `%s'", fname, line, port);
306 if (svc[pnum] == NULL) {
307 svc[pnum] = calloc(PROTOMAX, sizeof(StringList *));
308 if (svc[pnum] == NULL)
309 err(1, "Cannot allocate %zu bytes",
313 pindex = getprotoindex(sl, proto);
314 if (svc[pnum][pindex] == NULL)
315 s = svc[pnum][pindex] = sl_init();
317 s = svc[pnum][pindex];
319 /* build list of aliases */
320 if (sl_find(s, name) == NULL) {
323 if ((p2 = strdup(name)) == NULL)
324 err(1, "Cannot copy string");
329 while ((alias = strsep(&aliases, " \t")) != NULL) {
330 if (alias[0] == '\0')
332 if (sl_find(s, alias) == NULL) {
335 if ((p2 = strdup(alias)) == NULL)
336 err(1, "Cannot copy string");
347 * cleanup(): Remove temporary files upon exit
357 getstring(const char *fname, size_t line, char **cp, const char *tag)
361 while ((str = strsep(cp, " \t")) != NULL && *str == '\0')
365 warnx("%s, %zu: no %s found", fname, line, tag);
373 char *p, *d = key->data;
375 if ((p = strchr(d, '/')) == NULL)
382 store(DB *db, DBT *key, DBT *data, int warndup)
385 int k = key->size - 1;
386 int d = data->size - 1;
387 (void)printf("store [%*.*s] [%*.*s]\n",
388 k, k, (char *)key->data + 1,
389 d, d, (char *)data->data + 1);
391 switch ((db->put)(db, key, data, R_NOOVERWRITE)) {
396 warnx("duplicate service `%s'",
397 &((char *)key->data)[1]);
409 getprotoindex(StringList *sl, const char *str)
414 for (i= 0; i < sl->sl_cur; i++)
415 if (strcmp(sl->sl_str[i], str) == 0)
419 errx(1, "Ran out of protocols adding `%s';"
420 " recompile with larger PROTOMAX", str);
421 if ((p = strdup(str)) == NULL)
422 err(1, "Cannot copy string");
428 getprotostr(StringList *sl, size_t i)
430 assert(i < sl->sl_cur);
431 return sl->sl_str[i];
435 mkaliases(StringList *sl, char *buf, size_t len)
440 for (i = 1, pos = 0; i < sl->sl_cur; i++) {
441 nc = strlcpy(buf + pos, sl->sl_str[i], len);
446 nc = strlcpy(buf + pos, " ", len);
454 warn("aliases for `%s' truncated", sl->sl_str[0]);
461 (void)fprintf(stderr,
462 "Usage:\t%s [-b | -l] [-q] [-o <db>] [<servicefile>]\n"
463 "\t%s -u [<servicefile>]\n", getprogname(), getprogname());