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 __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 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 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