yp_dbupdate.c revision 90298 
1/*
2 * Copyright (c) 1996
3 *	Bill Paul <wpaul@ctr.columbia.edu>.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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 Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#ifndef lint
34static const char rcsid[] =
35  "$FreeBSD: head/usr.sbin/rpc.ypupdated/yp_dbupdate.c 90298 2002-02-06 15:26:07Z des $";
36#endif /* not lint */
37
38#include <sys/fcntl.h>
39
40#include <stdio.h>
41#include <string.h>
42#include <errno.h>
43#include <limits.h>
44#include <db.h>
45#include <unistd.h>
46struct dom_binding {};
47#include <rpcsvc/ypclnt.h>
48#include <rpcsvc/ypupdate_prot.h>
49#include "ypxfr_extern.h"
50#include "ypupdated_extern.h"
51
52static int
53yp_domake(char *map, char *domain)
54{
55	int pid;
56
57	switch ((pid = fork())) {
58	case 0:
59		execlp(MAP_UPDATE_PATH, MAP_UPDATE, map, domain, (char *)NULL);
60		yp_error("couldn't exec map update process: %s",
61						strerror(errno));
62		exit(1);
63		break;
64	case -1:
65		yp_error("fork() failed: %s", strerror(errno));
66		return(YPERR_YPERR);
67		break;
68	default:
69		children++;
70		break;
71	}
72
73	return(0);
74}
75
76int
77ypmap_update(char *netname, char *map, unsigned int op, unsigned int keylen,
78    char *keyval, unsigned int datlen, char *datval)
79{
80	DB *dbp;
81	DBT key = { NULL, 0 }, data = { NULL, 0 };
82	char *yp_last = "YP_LAST_MODIFIED";
83	char yplastbuf[YPMAXRECORD];
84	char *domptr;
85	int rval = 0;
86
87	if ((domptr = strchr(netname, '@')) == NULL)
88		return(ERR_ACCESS);
89	domptr++;
90
91
92	dbp = yp_open_db_rw(domptr, map, O_RDWR);
93	if (dbp == NULL)
94		return(ERR_DBASE);
95
96	key.data = keyval;
97	key.size = keylen;
98	data.data = datval;
99	data.size = datlen;
100
101	switch (op) {
102	case YPOP_DELETE: /* delete this entry */
103		rval = yp_del_record(dbp, &key);
104		if (rval == YP_TRUE)
105			rval = 0;
106		break;
107	case YPOP_INSERT: /* add, do not change */
108		rval = yp_put_record(dbp, &key, &data, 0);
109		if (rval == YP_TRUE)
110			rval = 0;
111		break;
112	case YPOP_STORE: /* add, or change */
113		rval = yp_put_record(dbp, &key, &data, 1);
114		if (rval == YP_TRUE)
115			rval = 0;
116		break;
117	case YPOP_CHANGE: /* change, do not add */
118		if (yp_get_record(domptr, map, &key, &data, 0) != YP_TRUE) {
119			rval = ERR_KEY;
120			break;
121		}
122		rval = yp_put_record(dbp, &key, &data, 1);
123		if (rval == YP_TRUE)
124			rval = 0;
125		break;
126	default:
127		yp_error("unknown update command: (%d)", op);
128	}
129
130	if (rval) {
131		(void)(dbp->close)(dbp);
132		return(rval);
133	}
134
135	snprintf(yplastbuf, sizeof(yplastbuf), "%lu", time(NULL));
136	key.data = yp_last;
137	key.size = strlen(yp_last);
138	data.data = (char *)&yplastbuf;
139	data.size = strlen(yplastbuf);
140	if (yp_put_record(dbp, &key, &data, 1) != YP_TRUE) {
141		yp_error("failed to update timestamp in %s/%s", domptr, map);
142		(void)(dbp->close)(dbp);
143		return(ERR_DBASE);
144	}
145
146	(void)(dbp->close)(dbp);
147	return(yp_domake(map, domptr));
148}
149