1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 1995 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 <db.h> 39 #include <errno.h> 40 #include <fcntl.h> 41 #include <limits.h> 42 #include <paths.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <unistd.h> 47 #include <sys/stat.h> 48 #include <rpcsvc/yp.h> 49 #include "ypxfr_extern.h" 50 51 #define PERM_SECURE (S_IRUSR|S_IWUSR) 52 53 /* 54 * Open a DB database read/write 55 */ 56 DB * 57 yp_open_db_rw(const char *domain, const char *map, const int flags) 58 { 59 DB *dbp; 60 char buf[1025]; 61 62 63 yp_errno = YP_TRUE; 64 65 if (map[0] == '.' || strchr(map, '/')) { 66 yp_errno = YP_BADARGS; 67 return (NULL); 68 } 69 70 #define FLAGS O_RDWR|O_EXLOCK|O_EXCL|O_CREAT 71 72 snprintf(buf, sizeof(buf), "%s/%s/%s", yp_dir, domain, map); 73 dbp = dbopen(buf,flags ? flags : FLAGS,PERM_SECURE,DB_HASH,&openinfo); 74 75 if (dbp == NULL) { 76 switch (errno) { 77 case ENOENT: 78 yp_errno = YP_NOMAP; 79 break; 80 case EFTYPE: 81 yp_errno = YP_BADDB; 82 break; 83 default: 84 yp_errno = YP_YPERR; 85 break; 86 } 87 } 88 89 return (dbp); 90 } 91 92 int 93 yp_put_record(DB *dbp, DBT *key, DBT *data, int allow_overwrite) 94 { 95 int rval; 96 97 if ((rval = (dbp->put)(dbp,key,data, allow_overwrite ? 0 : 98 R_NOOVERWRITE))) { 99 switch (rval) { 100 case 1: 101 return(YP_FALSE); 102 break; 103 case -1: 104 default: 105 (void)(dbp->close)(dbp); 106 return(YP_BADDB); 107 break; 108 } 109 } 110 111 return(YP_TRUE); 112 } 113