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 #ifndef lint 34 static const char rcsid[] = 35 "$FreeBSD$"; 36 #endif /* not lint */ 37 38 #include <sys/fcntl.h> 39 40 #include <stdio.h> 41 #include <string.h> 42 #include <errno.h> 43 #include <limits.h> 44 #include <db.h> 45 #include <unistd.h> 46 struct dom_binding {}; 47 #include <rpcsvc/ypclnt.h> 48 #include <rpcsvc/ypupdate_prot.h> 49 #include "ypxfr_extern.h" 50 #include "ypupdated_extern.h" 51 52 static int yp_domake(map, domain) 53 char *map; 54 char *domain; 55 { 56 int pid; 57 58 switch((pid = fork())) { 59 case 0: 60 execlp(MAP_UPDATE_PATH, MAP_UPDATE, map, domain, 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(netname, map, op, keylen, keyval, datlen, datval) 78 char *netname; 79 char *map; 80 unsigned int op; 81 unsigned int keylen; 82 char *keyval; 83 unsigned int datlen; 84 char *datval; 85 { 86 DB *dbp; 87 DBT key = { NULL, 0 }, data = { NULL, 0 }; 88 char *yp_last = "YP_LAST_MODIFIED"; 89 char yplastbuf[YPMAXRECORD]; 90 char *domptr; 91 int rval = 0; 92 93 if ((domptr = strchr(netname, '@')) == NULL) 94 return(ERR_ACCESS); 95 domptr++; 96 97 98 dbp = yp_open_db_rw(domptr, map, O_RDWR); 99 if (dbp == NULL) 100 return(ERR_DBASE); 101 102 key.data = keyval; 103 key.size = keylen; 104 data.data = datval; 105 data.size = datlen; 106 107 switch(op) { 108 case YPOP_DELETE: /* delete this entry */ 109 rval = yp_del_record(dbp, &key); 110 if (rval == YP_TRUE) 111 rval = 0; 112 break; 113 case YPOP_INSERT: /* add, do not change */ 114 rval = yp_put_record(dbp, &key, &data, 0); 115 if (rval == YP_TRUE) 116 rval = 0; 117 break; 118 case YPOP_STORE: /* add, or change */ 119 rval = yp_put_record(dbp, &key, &data, 1); 120 if (rval == YP_TRUE) 121 rval = 0; 122 break; 123 case YPOP_CHANGE: /* change, do not add */ 124 if (yp_get_record(domptr, map, &key, &data, 0) != YP_TRUE) { 125 rval = ERR_KEY; 126 break; 127 } 128 rval = yp_put_record(dbp, &key, &data, 1); 129 if (rval == YP_TRUE) 130 rval = 0; 131 break; 132 default: 133 yp_error("unknown update command: (%d)", op); 134 } 135 136 if (rval) { 137 (void)(dbp->close)(dbp); 138 return(rval); 139 } 140 141 snprintf(yplastbuf, sizeof(yplastbuf), "%lu", time(NULL)); 142 key.data = yp_last; 143 key.size = strlen(yp_last); 144 data.data = (char *)&yplastbuf; 145 data.size = strlen(yplastbuf); 146 if (yp_put_record(dbp, &key, &data, 1) != YP_TRUE) { 147 yp_error("failed to update timestamp in %s/%s", domptr, map); 148 (void)(dbp->close)(dbp); 149 return(ERR_DBASE); 150 } 151 152 (void)(dbp->close)(dbp); 153 return(yp_domake(map, domptr)); 154 } 155