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 * $FreeBSD: src/usr.sbin/rpc.ypupdated/yp_dbupdate.c,v 1.9 2004/10/17 19:33:32 stefanf Exp $ 33 * $DragonFly: src/usr.sbin/rpc.ypupdated/yp_dbupdate.c,v 1.5 2007/11/25 01:28:24 swildner Exp $ 34 */ 35 36 #include <sys/fcntl.h> 37 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <string.h> 41 #include <errno.h> 42 #include <limits.h> 43 #include <db.h> 44 #include <unistd.h> 45 #include <rpcsvc/ypclnt.h> 46 #include <rpcsvc/ypupdate_prot.h> 47 #include "ypxfr_extern.h" 48 #include "ypupdated_extern.h" 49 50 static int 51 yp_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, 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 74 int 75 ypmap_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 (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 (dbp->close)(dbp); 141 return(ERR_DBASE); 142 } 143 144 (dbp->close)(dbp); 145 return(yp_domake(map, domptr)); 146 } 147