1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 1995, 1996 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 <errno.h> 39 #include <stdlib.h> 40 #include <string.h> 41 #include <time.h> 42 #include <unistd.h> 43 #include <rpcsvc/ypxfrd.h> 44 #include <rpcsvc/yp.h> 45 #include <rpc/rpc.h> 46 #include <sys/uio.h> 47 #include <sys/fcntl.h> 48 #include <sys/stat.h> 49 #include <sys/types.h> 50 #include "ypxfr_extern.h" 51 52 static int fp = 0; 53 54 static bool_t 55 xdr_my_xfr(register XDR *xdrs, xfr *objp) 56 { 57 while (1) { 58 if (!xdr_xfr(xdrs, objp)) 59 return(FALSE); 60 if (objp->ok == TRUE) { 61 if (write(fp, objp->xfr_u.xfrblock_buf.xfrblock_buf_val, 62 objp->xfr_u.xfrblock_buf.xfrblock_buf_len) == -1) { 63 yp_error("write failed: %s", strerror(errno)); 64 return(FALSE); 65 } 66 } 67 xdr_free((xdrproc_t)xdr_xfr, (char *)objp); 68 if (objp->ok == FALSE) { 69 switch (objp->xfr_u.xfrstat) { 70 case(XFR_DONE): 71 return(TRUE); 72 break; 73 case(XFR_READ_ERR): 74 yp_error("got read error from rpc.ypxfrd"); 75 return(FALSE); 76 break; 77 case(XFR_ACCESS): 78 yp_error("rpc.ypxfrd couldn't access the map"); 79 return(FALSE); 80 break; 81 case(XFR_DENIED): 82 yp_error("access to map denied by rpc.ypxfrd"); 83 return(FALSE); 84 break; 85 case(XFR_DB_TYPE_MISMATCH): 86 yp_error("client/server DB type mismatch"); 87 return(FALSE); 88 break; 89 case(XFR_DB_ENDIAN_MISMATCH): 90 yp_error("client/server byte order mismatch"); 91 return(FALSE); 92 break; 93 default: 94 yp_error("got unknown status from rpc.ypxfrd"); 95 return(FALSE); 96 break; 97 } 98 } 99 } 100 } 101 102 #define PERM_SECURE (S_IRUSR|S_IWUSR) 103 104 int 105 ypxfrd_get_map(char *host, char *map, char *domain, char *tmpname) 106 { 107 CLIENT *clnt; 108 struct ypxfr_mapname req; 109 struct xfr resp; 110 struct timeval timeout = { 0, 25 }; 111 int status = 0; 112 113 req.xfrmap = map; 114 req.xfrdomain = domain; 115 req.xfrmap_filename = ""; 116 req.xfr_db_type = XFR_DB_BSD_HASH; /* 117 req.xfr_byte_order = XFR_ENDIAN_ANY; * Berkeley DB isn't 118 * byte-order sensitive. 119 */ 120 121 bzero((char *)&resp, sizeof(resp)); 122 123 if ((clnt = clnt_create(host, YPXFRD_FREEBSD_PROG, 124 YPXFRD_FREEBSD_VERS, "tcp")) == NULL) { 125 return(1); 126 } 127 128 if ((fp = open(tmpname, O_RDWR|O_CREAT, PERM_SECURE)) == -1) { 129 clnt_destroy(clnt); 130 yp_error("couldn't open %s: %s", tmpname, strerror(errno)); 131 return(1); 132 } 133 134 if (clnt_call(clnt,YPXFRD_GETMAP, 135 (xdrproc_t)xdr_ypxfr_mapname, (char *)&req, 136 (xdrproc_t)xdr_my_xfr, (char *)&resp, 137 timeout) != RPC_SUCCESS) { 138 yp_error("%s", clnt_sperror(clnt,"call to rpc.ypxfrd failed")); 139 status++; 140 unlink(tmpname); 141 } 142 143 clnt_destroy(clnt); 144 close(fp); 145 return(status); 146 } 147