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Diffstat (limited to 'usr.sbin/ypserv/ypdb.c')
| -rw-r--r-- | usr.sbin/ypserv/ypdb.c | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/usr.sbin/ypserv/ypdb.c b/usr.sbin/ypserv/ypdb.c new file mode 100644 index 00000000000..9ac9aac8af4 --- /dev/null +++ b/usr.sbin/ypserv/ypdb.c @@ -0,0 +1,239 @@ +/* + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1994 Mats O Jansson <moj@stacken.kth.se> + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Margo Seltzer. + * + * This code is derived from ndbm module of BSD4.4 db (hash) by + * Mats O Jansson + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $Id: ypdb.c,v 1.1 1995/10/23 07:46:39 deraadt Exp $ + */ + +#include <sys/param.h> +#include <sys/types.h> +#include <stdio.h> +#include <string.h> + +#include "ypdb.h" + +#ifdef YPDB_PATCH +extern DBM *__hash_open(); +#else +extern DBM *__bt_open(); +#endif + +/* + * Returns: + * *DBM on success + * NULL on failure + */ + +extern DBM * +ypdb_open(file, flags, mode) + const char *file; + int flags, mode; +{ +#ifdef YPDB_PATCH + HASHINFO info; + char path[MAXPATHLEN]; + + info.bsize = 4096; + info.ffactor = 40; + info.nelem = 1; + info.cachesize = NULL; + info.hash = NULL; + info.lorder = 0; + (void)strcpy(path, file); + (void)strcat(path, YPDB_SUFFIX); + return ((DBM *)__hash_open(path, flags, mode, &info, 0)); +#else + BTREEINFO info; + char path[MAXPATHLEN]; + DBM *db; + + info.flags = 0; + info.cachesize = 0; + info.maxkeypage = 0; + info.minkeypage = 0; + info.psize = 0; + info.compare = NULL; + info.prefix = NULL; + info.lorder = 0; + (void)strcpy(path, file); + (void)strcat(path, YPDB_SUFFIX); + db = (DBM *)__bt_open(path, flags, mode, &info, 0); + return (db); +#endif +} + +extern void +ypdb_close(db) + DBM *db; +{ + (void)(db->close)(db); +} + +/* + * Returns: + * DATUM on success + * NULL on failure + */ + +extern datum +ypdb_fetch(db, key) + DBM *db; + datum key; +{ + datum retval; + int status; + + status = (db->get)(db, (DBT *)&key, (DBT *)&retval, 0); + if (status) { + retval.dptr = NULL; + retval.dsize = 0; + } + return (retval); +} + +/* + * Returns: + * DATUM on success + * NULL on failure + */ + +extern datum +ypdb_firstkey(db) + DBM *db; +{ + int status; + datum retdata, retkey; + + status = (db->seq)(db, (DBT *)&retkey, (DBT *)&retdata, R_FIRST); + if (status) + retkey.dptr = NULL; + return (retkey); +} + +/* + * Returns: + * DATUM on success + * NULL on failure + */ + +extern datum +ypdb_nextkey(db) + DBM *db; +{ + int status; + datum retdata, retkey; + + status = (db->seq)(db, (DBT *)&retkey, (DBT *)&retdata, R_NEXT); + if (status) + retkey.dptr = NULL; + return (retkey); +} + +/* + * Returns: + * DATUM on success + * NULL on failure + */ + +extern datum +ypdb_setkey(db, key) + DBM *db; + datum key; +{ + int status; + datum retdata; +#ifdef YPDB_PATCH + datum retkey; + + status = (db->seq)(db, (DBT *)&retkey, (DBT *)&retdata, R_FIRST); + if (status) + retkey.dptr = NULL; + while ((retkey.dptr != NULL) && + ((retkey.dsize != key.dsize) || + (strncmp(key.dptr,retkey.dptr,retkey.dsize) != 0))) { + status = (db->seq)(db, (DBT *)&retkey, (DBT *)&retdata, R_NEXT); + if (status) + retkey.dptr = NULL; + }; + return (retkey); +#else + status = (db->seq)(db, (DBT *)&key, (DBT *)&retdata, R_CURSOR); + if (status) + key.dptr = NULL; + return (key); +#endif +} + +/* + * Returns: + * 0 on success + * <0 failure + */ + +int +ypdb_delete(db, key) + DBM *db; + datum key; +{ + int status; + + status = (db->del)(db, (DBT *)&key, 0); + if (status) + return (-1); + else + return (0); +} + +/* + * Returns: + * 0 on success + * <0 failure + * 1 if YPDB_INSERT and entry exists + */ + +int +ypdb_store(db, key, content, flags) + DBM *db; + datum key, content; + int flags; +{ + return ((db->put)(db, (DBT *)&key, (DBT *)&content, + (flags == YPDB_INSERT) ? R_NOOVERWRITE : 0)); +} + |