yp_dbupdate.c revision 114601 
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#include <sys/cdefs.h>
34__FBSDID("$FreeBSD: head/usr.sbin/rpc.ypupdated/yp_dbupdate.c 114601 2003-05-03 21:06:42Z obrien $");
35
36#include <sys/fcntl.h>
37
38#include <stdio.h>
39#include <string.h>
40#include <errno.h>
41#include <limits.h>
42#include <db.h>
43#include <unistd.h>
44struct dom_binding {};
45#include <rpcsvc/ypclnt.h>
46#include <rpcsvc/ypupdate_prot.h>
47#include "ypxfr_extern.h"
48#include "ypupdated_extern.h"
49
50static int
51yp_domake(char *map, char *domain)
52{
53	int pid;
54
55	switch ((pid = fork())) {
56	case 0:
57		execlp(MAP_UPDATE_PATH, MAP_UPDATE, map, domain, (char *)NULL);
58		yp_error("couldn't exec map update process: %s",
59						strerror(errno));
60		exit(1);
61		break;
62	case -1:
63		yp_error("fork() failed: %s", strerror(errno));
64		return(YPERR_YPERR);
65		break;
66	default:
67		children++;
68		break;
69	}
70
71	return(0);
72}
73
74int
75ypmap_update(char *netname, char *map, unsigned int op, unsigned int keylen,
76    char *keyval, unsigned int datlen, char *datval)
77{
78	DB *dbp;
79	DBT key = { NULL, 0 }, data = { NULL, 0 };
80	char *yp_last = "YP_LAST_MODIFIED";
81	char yplastbuf[YPMAXRECORD];
82	char *domptr;
83	int rval = 0;
84
85	if ((domptr = strchr(netname, '@')) == NULL)
86		return(ERR_ACCESS);
87	domptr++;
88
89
90	dbp = yp_open_db_rw(domptr, map, O_RDWR);
91	if (dbp == NULL)
92		return(ERR_DBASE);
93
94	key.data = keyval;
95	key.size = keylen;
96	data.data = datval;
97	data.size = datlen;
98
99	switch (op) {
100	case YPOP_DELETE: /* delete this entry */
101		rval = yp_del_record(dbp, &key);
102		if (rval == YP_TRUE)
103			rval = 0;
104		break;
105	case YPOP_INSERT: /* add, do not change */
106		rval = yp_put_record(dbp, &key, &data, 0);
107		if (rval == YP_TRUE)
108			rval = 0;
109		break;
110	case YPOP_STORE: /* add, or change */
111		rval = yp_put_record(dbp, &key, &data, 1);
112		if (rval == YP_TRUE)
113			rval = 0;
114		break;
115	case YPOP_CHANGE: /* change, do not add */
116		if (yp_get_record(domptr, map, &key, &data, 0) != YP_TRUE) {
117			rval = ERR_KEY;
118			break;
119		}
120		rval = yp_put_record(dbp, &key, &data, 1);
121		if (rval == YP_TRUE)
122			rval = 0;
123		break;
124	default:
125		yp_error("unknown update command: (%d)", op);
126	}
127
128	if (rval) {
129		(void)(dbp->close)(dbp);
130		return(rval);
131	}
132
133	snprintf(yplastbuf, sizeof(yplastbuf), "%lu", time(NULL));
134	key.data = yp_last;
135	key.size = strlen(yp_last);
136	data.data = (char *)&yplastbuf;
137	data.size = strlen(yplastbuf);
138	if (yp_put_record(dbp, &key, &data, 1) != YP_TRUE) {
139		yp_error("failed to update timestamp in %s/%s", domptr, map);
140		(void)(dbp->close)(dbp);
141		return(ERR_DBASE);
142	}
143
144	(void)(dbp->close)(dbp);
145	return(yp_domake(map, domptr));
146}
147