1 /* 2 * Copyright (c) 1995 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 <db.h> 37 #include <errno.h> 38 #include <fcntl.h> 39 #include <limits.h> 40 #include <paths.h> 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <unistd.h> 45 #include <sys/stat.h> 46 #include <rpcsvc/yp.h> 47 #include "ypxfr_extern.h" 48 49 #define PERM_SECURE (S_IRUSR|S_IWUSR) 50 51 /* 52 * Open a DB database read/write 53 */ 54 DB * 55 yp_open_db_rw(const char *domain, const char *map, const int flags) 56 { 57 DB *dbp; 58 char buf[1025]; 59 60 61 yp_errno = YP_TRUE; 62 63 if (map[0] == '.' || strchr(map, '/')) { 64 yp_errno = YP_BADARGS; 65 return (NULL); 66 } 67 68 #define FLAGS O_RDWR|O_EXLOCK|O_EXCL|O_CREAT 69 70 snprintf(buf, sizeof(buf), "%s/%s/%s", yp_dir, domain, map); 71 dbp = dbopen(buf,flags ? flags : FLAGS,PERM_SECURE,DB_HASH,&openinfo); 72 73 if (dbp == NULL) { 74 switch (errno) { 75 case ENOENT: 76 yp_errno = YP_NOMAP; 77 break; 78 case EFTYPE: 79 yp_errno = YP_BADDB; 80 break; 81 default: 82 yp_errno = YP_YPERR; 83 break; 84 } 85 } 86 87 return (dbp); 88 } 89 90 int 91 yp_put_record(DB *dbp, DBT *key, DBT *data, int allow_overwrite) 92 { 93 int rval; 94 95 if ((rval = (dbp->put)(dbp,key,data, allow_overwrite ? 0 : 96 R_NOOVERWRITE))) { 97 switch (rval) { 98 case 1: 99 return(YP_FALSE); 100 break; 101 case -1: 102 default: 103 (void)(dbp->close)(dbp); 104 return(YP_BADDB); 105 break; 106 } 107 } 108 109 return(YP_TRUE); 110 } 111