1 /* 2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 3 * unrestricted use provided that this legend is included on all tape 4 * media and as a part of the software program in whole or part. Users 5 * may copy or modify Sun RPC without charge, but are not authorized 6 * to license or distribute it to anyone else except as part of a product or 7 * program developed by the user. 8 * 9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 12 * 13 * Sun RPC is provided with no support and without any obligation on the 14 * part of Sun Microsystems, Inc. to assist in its use, correction, 15 * modification or enhancement. 16 * 17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 19 * OR ANY PART THEREOF. 20 * 21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 22 * or profits or other special, indirect and consequential damages, even if 23 * Sun has been advised of the possibility of such damages. 24 * 25 * Sun Microsystems, Inc. 26 * 2550 Garcia Avenue 27 * Mountain View, California 94043 28 */ 29 /* 30 * warmstart.c 31 * Allows for gathering of registrations from an earlier dumped file. 32 * 33 * Copyright (c) 1990 by Sun Microsystems, Inc. 34 */ 35 36 /* 37 * @(#)warmstart.c 1.7 93/07/05 SMI 38 * $FreeBSD: src/usr.sbin/rpcbind/warmstart.c,v 1.4 2007/11/07 10:53:39 kevlo Exp $ 39 */ 40 #include <sys/types.h> 41 #include <sys/stat.h> 42 #include <stdio.h> 43 #include <rpc/rpc.h> 44 #include <rpc/rpcb_prot.h> 45 #include <rpc/xdr.h> 46 #ifdef PORTMAP 47 #include <netinet/in.h> 48 #include <rpc/pmap_prot.h> 49 #endif 50 #include <syslog.h> 51 #include <unistd.h> 52 53 #include "rpcbind.h" 54 55 /* 56 * XXX this code is unsafe and is not used. It should be made safe. 57 */ 58 59 60 /* These files keep the pmap_list and rpcb_list in XDR format */ 61 #define RPCBFILE "/tmp/rpcbind.file" 62 #ifdef PORTMAP 63 #define PMAPFILE "/tmp/portmap.file" 64 #endif 65 66 static bool_t write_struct(char *, xdrproc_t, void *); 67 static bool_t read_struct(char *, xdrproc_t, void *); 68 69 static bool_t 70 write_struct(char *filename, xdrproc_t structproc, void *list) 71 { 72 FILE *fp; 73 XDR xdrs; 74 mode_t omask; 75 76 omask = umask(077); 77 fp = fopen(filename, "w"); 78 if (fp == NULL) { 79 int i; 80 81 for (i = 0; i < 10; i++) 82 close(i); 83 fp = fopen(filename, "w"); 84 if (fp == NULL) { 85 syslog(LOG_ERR, 86 "cannot open file = %s for writing", filename); 87 syslog(LOG_ERR, "cannot save any registration"); 88 return (FALSE); 89 } 90 } 91 umask(omask); 92 xdrstdio_create(&xdrs, fp, XDR_ENCODE); 93 94 if (structproc(&xdrs, list) == FALSE) { 95 syslog(LOG_ERR, "rpcbind: xdr_%s: failed", filename); 96 fclose(fp); 97 return (FALSE); 98 } 99 XDR_DESTROY(&xdrs); 100 fclose(fp); 101 return (TRUE); 102 } 103 104 static bool_t 105 read_struct(char *filename, xdrproc_t structproc, void *list) 106 { 107 FILE *fp; 108 XDR xdrs; 109 struct stat sbuf; 110 111 if (stat(filename, &sbuf) != 0) { 112 fprintf(stderr, 113 "rpcbind: cannot stat file = %s for reading\n", filename); 114 goto error; 115 } 116 if ((sbuf.st_uid != 0) || (sbuf.st_mode & S_IRWXG) || 117 (sbuf.st_mode & S_IRWXO)) { 118 fprintf(stderr, 119 "rpcbind: invalid permissions on file = %s for reading\n", 120 filename); 121 goto error; 122 } 123 fp = fopen(filename, "r"); 124 if (fp == NULL) { 125 fprintf(stderr, 126 "rpcbind: cannot open file = %s for reading\n", filename); 127 goto error; 128 } 129 xdrstdio_create(&xdrs, fp, XDR_DECODE); 130 131 if (structproc(&xdrs, list) == FALSE) { 132 fprintf(stderr, "rpcbind: xdr_%s: failed\n", filename); 133 fclose(fp); 134 goto error; 135 } 136 XDR_DESTROY(&xdrs); 137 fclose(fp); 138 return (TRUE); 139 140 error: fprintf(stderr, "rpcbind: will start from scratch\n"); 141 return (FALSE); 142 } 143 144 void 145 write_warmstart(void) 146 { 147 write_struct(RPCBFILE, (xdrproc_t)xdr_rpcblist_ptr, &list_rbl); 148 #ifdef PORTMAP 149 write_struct(PMAPFILE, (xdrproc_t)xdr_pmaplist_ptr, &list_pml); 150 #endif 151 152 } 153 154 void 155 read_warmstart(void) 156 { 157 rpcblist_ptr tmp_rpcbl = NULL; 158 #ifdef PORTMAP 159 struct pmaplist *tmp_pmapl = NULL; 160 #endif 161 int ok1, ok2 = TRUE; 162 163 ok1 = read_struct(RPCBFILE, (xdrproc_t)xdr_rpcblist_ptr, &tmp_rpcbl); 164 if (ok1 == FALSE) 165 return; 166 #ifdef PORTMAP 167 ok2 = read_struct(PMAPFILE, (xdrproc_t)xdr_pmaplist_ptr, &tmp_pmapl); 168 #endif 169 if (ok2 == FALSE) { 170 xdr_free((xdrproc_t) xdr_rpcblist_ptr, (char *)&tmp_rpcbl); 171 return; 172 } 173 xdr_free((xdrproc_t) xdr_rpcblist_ptr, (char *)&list_rbl); 174 list_rbl = tmp_rpcbl; 175 #ifdef PORTMAP 176 xdr_free((xdrproc_t) xdr_pmaplist_ptr, (char *)&list_pml); 177 list_pml = tmp_pmapl; 178 #endif 179 } 180