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("$FreeBSD$"); 35 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 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 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[YPMAXRECORD]; 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