1 /*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 1996
5 * Bill Paul <wpaul@ctr.columbia.edu>. 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 #include <sys/fcntl.h>
37
38 #include <stdint.h>
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <string.h>
42 #include <errno.h>
43 #include <limits.h>
44 #include <db.h>
45 #include <unistd.h>
46 #include <rpcsvc/ypclnt.h>
47 #include <rpcsvc/ypupdate_prot.h>
48 #include "ypxfr_extern.h"
49 #include "ypupdated_extern.h"
50
51 static int
yp_domake(char * map,char * domain)52 yp_domake(char *map, char *domain)
53 {
54 int pid;
55
56 switch ((pid = fork())) {
57 case 0:
58 execlp(MAP_UPDATE_PATH, MAP_UPDATE, map, domain, (char *)NULL);
59 yp_error("couldn't exec map update process: %s",
60 strerror(errno));
61 exit(1);
62 break;
63 case -1:
64 yp_error("fork() failed: %s", strerror(errno));
65 return(YPERR_YPERR);
66 break;
67 default:
68 children++;
69 break;
70 }
71
72 return(0);
73 }
74
75 int
ypmap_update(char * netname,char * map,unsigned int op,unsigned int keylen,char * keyval,unsigned int datlen,char * datval)76 ypmap_update(char *netname, char *map, unsigned int op, unsigned int keylen,
77 char *keyval, unsigned int datlen, char *datval)
78 {
79 DB *dbp;
80 DBT key = { NULL, 0 }, data = { NULL, 0 };
81 char *yp_last = "YP_LAST_MODIFIED";
82 char yplastbuf[32];
83 char *domptr;
84 int rval = 0;
85
86 if ((domptr = strchr(netname, '@')) == NULL)
87 return(ERR_ACCESS);
88 domptr++;
89
90
91 dbp = yp_open_db_rw(domptr, map, O_RDWR);
92 if (dbp == NULL)
93 return(ERR_DBASE);
94
95 key.data = keyval;
96 key.size = keylen;
97 data.data = datval;
98 data.size = datlen;
99
100 switch (op) {
101 case YPOP_DELETE: /* delete this entry */
102 rval = yp_del_record(dbp, &key);
103 if (rval == YP_TRUE)
104 rval = 0;
105 break;
106 case YPOP_INSERT: /* add, do not change */
107 rval = yp_put_record(dbp, &key, &data, 0);
108 if (rval == YP_TRUE)
109 rval = 0;
110 break;
111 case YPOP_STORE: /* add, or change */
112 rval = yp_put_record(dbp, &key, &data, 1);
113 if (rval == YP_TRUE)
114 rval = 0;
115 break;
116 case YPOP_CHANGE: /* change, do not add */
117 if (yp_get_record(domptr, map, &key, &data, 0) != YP_TRUE) {
118 rval = ERR_KEY;
119 break;
120 }
121 rval = yp_put_record(dbp, &key, &data, 1);
122 if (rval == YP_TRUE)
123 rval = 0;
124 break;
125 default:
126 yp_error("unknown update command: (%d)", op);
127 }
128
129 if (rval) {
130 (void)(dbp->close)(dbp);
131 return(rval);
132 }
133
134 snprintf(yplastbuf, sizeof(yplastbuf), "%jd", (intmax_t)time(NULL));
135 key.data = yp_last;
136 key.size = strlen(yp_last);
137 data.data = (char *)&yplastbuf;
138 data.size = strlen(yplastbuf);
139 if (yp_put_record(dbp, &key, &data, 1) != YP_TRUE) {
140 yp_error("failed to update timestamp in %s/%s", domptr, map);
141 (void)(dbp->close)(dbp);
142 return(ERR_DBASE);
143 }
144
145 (void)(dbp->close)(dbp);
146 return(yp_domake(map, domptr));
147 }
148