1 /*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 1996
5 * Bill Paul <[email protected]>. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Bill Paul.
18 * 4. Neither the name of the author nor the names of any co-contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
37
38 #include <sys/fcntl.h>
39
40 #include <stdint.h>
41 #include <stdio.h>
42 #include <stdlib.h>
43 #include <string.h>
44 #include <errno.h>
45 #include <limits.h>
46 #include <db.h>
47 #include <unistd.h>
48 #include <rpcsvc/ypclnt.h>
49 #include <rpcsvc/ypupdate_prot.h>
50 #include "ypxfr_extern.h"
51 #include "ypupdated_extern.h"
52
53 static int
yp_domake(char * map,char * domain)54 yp_domake(char *map, char *domain)
55 {
56 int pid;
57
58 switch ((pid = fork())) {
59 case 0:
60 execlp(MAP_UPDATE_PATH, MAP_UPDATE, map, domain, (char *)NULL);
61 yp_error("couldn't exec map update process: %s",
62 strerror(errno));
63 exit(1);
64 break;
65 case -1:
66 yp_error("fork() failed: %s", strerror(errno));
67 return(YPERR_YPERR);
68 break;
69 default:
70 children++;
71 break;
72 }
73
74 return(0);
75 }
76
77 int
ypmap_update(char * netname,char * map,unsigned int op,unsigned int keylen,char * keyval,unsigned int datlen,char * datval)78 ypmap_update(char *netname, char *map, unsigned int op, unsigned int keylen,
79 char *keyval, unsigned int datlen, char *datval)
80 {
81 DB *dbp;
82 DBT key = { NULL, 0 }, data = { NULL, 0 };
83 char *yp_last = "YP_LAST_MODIFIED";
84 char yplastbuf[32];
85 char *domptr;
86 int rval = 0;
87
88 if ((domptr = strchr(netname, '@')) == NULL)
89 return(ERR_ACCESS);
90 domptr++;
91
92
93 dbp = yp_open_db_rw(domptr, map, O_RDWR);
94 if (dbp == NULL)
95 return(ERR_DBASE);
96
97 key.data = keyval;
98 key.size = keylen;
99 data.data = datval;
100 data.size = datlen;
101
102 switch (op) {
103 case YPOP_DELETE: /* delete this entry */
104 rval = yp_del_record(dbp, &key);
105 if (rval == YP_TRUE)
106 rval = 0;
107 break;
108 case YPOP_INSERT: /* add, do not change */
109 rval = yp_put_record(dbp, &key, &data, 0);
110 if (rval == YP_TRUE)
111 rval = 0;
112 break;
113 case YPOP_STORE: /* add, or change */
114 rval = yp_put_record(dbp, &key, &data, 1);
115 if (rval == YP_TRUE)
116 rval = 0;
117 break;
118 case YPOP_CHANGE: /* change, do not add */
119 if (yp_get_record(domptr, map, &key, &data, 0) != YP_TRUE) {
120 rval = ERR_KEY;
121 break;
122 }
123 rval = yp_put_record(dbp, &key, &data, 1);
124 if (rval == YP_TRUE)
125 rval = 0;
126 break;
127 default:
128 yp_error("unknown update command: (%d)", op);
129 }
130
131 if (rval) {
132 (void)(dbp->close)(dbp);
133 return(rval);
134 }
135
136 snprintf(yplastbuf, sizeof(yplastbuf), "%jd", (intmax_t)time(NULL));
137 key.data = yp_last;
138 key.size = strlen(yp_last);
139 data.data = (char *)&yplastbuf;
140 data.size = strlen(yplastbuf);
141 if (yp_put_record(dbp, &key, &data, 1) != YP_TRUE) {
142 yp_error("failed to update timestamp in %s/%s", domptr, map);
143 (void)(dbp->close)(dbp);
144 return(ERR_DBASE);
145 }
146
147 (void)(dbp->close)(dbp);
148 return(yp_domake(map, domptr));
149 }
150