This commit was generated by cvs2svn to compensate for changes in r12891,

which included commits to RCS files with non-trunk default branches.

1 files changed, 217 insertions, 0 deletions

diff --git a/usr.sbin/ypserv/yp_dblookup.c b/usr.sbin/ypserv/yp_dblookup.c
new file mode 100644
index 0000000..79df52e
--- /dev/null
+++ b/usr.sbin/ypserv/yp_dblookup.c
@@ -0,0 +1,217 @@
+/*
+ * Copyright (c) 1995
+ *	Bill Paul <wpaul@ctr.columbia.edu>.  All rights reserved.
+ *
+ * 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 Bill Paul.
+ * 4. Neither the name of the author nor the names of any co-contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``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 Bill Paul OR CONTRIBUTORS 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: yp_dblookup.c,v 1.13 1995/12/16 04:46:10 wpaul Exp $
+ *
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <string.h>
+#include <limits.h>
+#include <unistd.h>
+#include <db.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <paths.h>
+#include "yp.h"
+#include "yp_extern.h"
+
+extern int debug_flag;
+int yp_errno = YP_TRUE;
+
+#define PERM_SECURE (S_IRUSR|S_IWUSR)
+HASHINFO openinfo = {
+	4096,		/* bsize */
+	32,		/* ffactor */
+	256,		/* nelem */
+	2048 * 1024, 	/* cachesize */
+	NULL,		/* hash */
+	0,		/* lorder */
+};
+
+/*
+ * Open a DB database
+ */
+DB *yp_open_db(domain, map)
+	const char *domain;
+	const char *map;
+{
+	DB *dbp;
+	char buf[1025];
+
+
+	yp_errno = YP_TRUE;
+
+	if (map[0] == '.' || strchr(map, '/')) {
+		yp_errno = YP_BADARGS;
+		return (NULL);
+	}
+
+	snprintf(buf, sizeof(buf), "%s/%s/%s", yp_dir, domain, map);
+
+	dbp = dbopen(buf,O_RDONLY|O_EXCL, PERM_SECURE, DB_HASH, &openinfo);
+
+	if (dbp == NULL) {
+		switch(errno) {
+		case ENOENT:
+			yp_errno = YP_NOMAP;
+			break;
+		case EFTYPE:
+			yp_errno = YP_BADDB;
+			break;
+		default:
+			yp_errno = YP_YPERR;
+			break;
+		}
+	}
+
+	return (dbp);
+}
+
+/*
+ * Database access routines.
+ *
+ * - yp_get_record(): retrieve an arbitrary key/data pair given one key
+ *                 to match against.
+ *
+ * - yp_first_record(): retrieve first key/data base in a database.
+ * 
+ * - yp_next_record(): retrieve key/data pair that sequentially follows
+ *                   the supplied key value in the database.
+ */
+
+int yp_get_record(domain,map,key,data,allow)
+	const char *domain;
+	const char *map;
+	const DBT *key;
+	DBT *data;
+	int allow;
+{
+	DB *dbp;
+
+	if (debug)
+		yp_error("Looking up key [%.*s] in map [%s]",
+			  key->size, key->data, map);
+
+	/*
+	 * Avoid passing back magic "YP_*" entries unless
+	 * the caller specifically requested them by setting
+	 * the 'allow' flag.
+	 */
+	if (!allow && !strncmp(key->data, "YP_", 3))
+		return(YP_NOKEY);
+
+	if ((dbp = yp_open_db(domain, map)) == NULL) {
+		return(yp_errno);
+	}
+
+	if ((dbp->get)(dbp,key,data,0)) {
+		(void)(dbp->close)(dbp);
+		return(YP_NOKEY);
+	}
+
+	(void)(dbp->close)(dbp);
+
+	if (debug)
+		yp_error("Result of lookup: key: [%.*s] data: [%.*s]",
+			 key->size, key->data, data->size, data->data);
+
+	return(YP_TRUE);
+}
+
+int yp_first_record(dbp,key,data)
+	const DB *dbp;
+	DBT *key;
+	DBT *data;
+{
+
+	if (debug)
+		yp_error("Retrieving first key in map.");
+
+	if ((dbp->seq)(dbp,key,data,R_FIRST))
+		return(YP_BADDB);
+
+	/* Avoid passing back magic "YP_*" records. */
+	while (!strncmp(key->data, "YP_", 3)) {
+		if ((dbp->seq)(dbp,key,data,R_NEXT))
+			return(YP_BADDB);
+	}
+
+	if (debug)
+		yp_error("Result of lookup: key: [%.*s] data: [%.*s]",
+			 key->size, key->data, data->size, data->data);
+
+	return(YP_TRUE);
+}
+
+int yp_next_record(dbp,key,data,all)
+	const DB *dbp;
+	DBT *key;
+	DBT *data;
+	int all;
+{
+	DBT lkey, ldata;
+
+	if (key == NULL || key->data == NULL)
+		return(yp_first_record(dbp,key,data));
+
+	if (debug)
+		yp_error("Retreiving next key, previous was: [%.*s]",
+			  key->size, key->data);
+
+	if (!all) {
+		(dbp->seq)(dbp,&lkey,&ldata,R_FIRST);
+		while(strncmp((char *)key->data,lkey.data,(int)key->size) ||
+		      key->size != lkey.size)
+			(dbp->seq)(dbp,&lkey,&ldata,R_NEXT);
+	}
+
+	if ((dbp->seq)(dbp,&lkey,&ldata,R_NEXT))
+		return(YP_NOMORE);
+
+	/* Avoid passing back magic "YP_*" records. */
+	while (!strncmp(lkey.data, "YP_", 3))
+		if ((dbp->seq)(dbp,&lkey,&ldata,R_NEXT))
+			return(YP_NOMORE);
+
+	if ((dbp->get)(dbp,&lkey,&ldata,0))
+		return(YP_FALSE);
+
+	*key = lkey;
+	*data = ldata;
+
+	if (debug)
+		yp_error("Result of lookup: key: [%.*s] data: [%.*s]",
+			 key->size, key->data, data->size, data->data);
+
+	return(YP_TRUE);
+}