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 a earlier dumped file. 32 * 33 * Copyright (c) 1990 by Sun Microsystems, Inc. 34 */ 35 36 #ident "@(#)warmstart.c 1.7 93/07/05 SMI" 37 38 #include <sys/types.h> 39 #include <sys/stat.h> 40 #include <stdio.h> 41 #include <rpc/rpc.h> 42 #include <rpc/rpcb_prot.h> 43 #include <rpc/xdr.h> 44 #ifdef PORTMAP 45 #include <netinet/in.h> 46 #include <rpc/pmap_prot.h> 47 #endif 48 #include <syslog.h> 49 #include <unistd.h> 50 51 #include "rpcbind.h" 52 53 /* 54 * XXX this code is unsafe and is not used. It should be made safe. 55 */ 56 57 58 /* These files keep the pmap_list and rpcb_list in XDR format */ 59 #define RPCBFILE "/tmp/rpcbind.file" 60 #ifdef PORTMAP 61 #define PMAPFILE "/tmp/portmap.file" 62 #endif 63 64 static bool_t write_struct __P((char *, xdrproc_t, void *)); 65 static bool_t read_struct __P((char *, xdrproc_t, void *)); 66 67 static bool_t 68 write_struct(char *filename, xdrproc_t structproc, void *list) 69 { 70 FILE *fp; 71 XDR xdrs; 72 mode_t omask; 73 74 omask = umask(077); 75 fp = fopen(filename, "w"); 76 if (fp == NULL) { 77 int i; 78 79 for (i = 0; i < 10; i++) 80 close(i); 81 fp = fopen(filename, "w"); 82 if (fp == NULL) { 83 syslog(LOG_ERR, 84 "cannot open file = %s for writing", filename); 85 syslog(LOG_ERR, "cannot save any registration"); 86 return (FALSE); 87 } 88 } 89 (void) umask(omask); 90 xdrstdio_create(&xdrs, fp, XDR_ENCODE); 91 92 if (structproc(&xdrs, list) == FALSE) { 93 syslog(LOG_ERR, "rpcbind: xdr_%s: failed", filename); 94 fclose(fp); 95 return (FALSE); 96 } 97 XDR_DESTROY(&xdrs); 98 fclose(fp); 99 return (TRUE); 100 } 101 102 static bool_t 103 read_struct(char *filename, xdrproc_t structproc, void *list) 104 { 105 FILE *fp; 106 XDR xdrs; 107 struct stat sbuf; 108 109 if (stat(filename, &sbuf) != 0) { 110 fprintf(stderr, 111 "rpcbind: cannot stat file = %s for reading\n", filename); 112 goto error; 113 } 114 if ((sbuf.st_uid != 0) || (sbuf.st_mode & S_IRWXG) || 115 (sbuf.st_mode & S_IRWXO)) { 116 fprintf(stderr, 117 "rpcbind: invalid permissions on file = %s for reading\n", 118 filename); 119 goto error; 120 } 121 fp = fopen(filename, "r"); 122 if (fp == NULL) { 123 fprintf(stderr, 124 "rpcbind: cannot open file = %s for reading\n", filename); 125 goto error; 126 } 127 xdrstdio_create(&xdrs, fp, XDR_DECODE); 128 129 if (structproc(&xdrs, list) == FALSE) { 130 fprintf(stderr, "rpcbind: xdr_%s: failed\n", filename); 131 fclose(fp); 132 goto error; 133 } 134 XDR_DESTROY(&xdrs); 135 fclose(fp); 136 return (TRUE); 137 138 error: fprintf(stderr, "rpcbind: will start from scratch\n"); 139 return (FALSE); 140 } 141 142 void 143 write_warmstart() 144 { 145 (void) write_struct(RPCBFILE, xdr_rpcblist_ptr, &list_rbl); 146 #ifdef PORTMAP 147 (void) write_struct(PMAPFILE, xdr_pmaplist_ptr, &list_pml); 148 #endif 149 150 } 151 152 void 153 read_warmstart() 154 { 155 rpcblist_ptr tmp_rpcbl = NULL; 156 #ifdef PORTMAP 157 struct pmaplist *tmp_pmapl = NULL; 158 #endif 159 int ok1, ok2 = TRUE; 160 161 ok1 = read_struct(RPCBFILE, xdr_rpcblist_ptr, &tmp_rpcbl); 162 if (ok1 == FALSE) 163 return; 164 #ifdef PORTMAP 165 ok2 = read_struct(PMAPFILE, xdr_pmaplist_ptr, &tmp_pmapl); 166 #endif 167 if (ok2 == FALSE) { 168 xdr_free((xdrproc_t) xdr_rpcblist_ptr, (char *)&tmp_rpcbl); 169 return; 170 } 171 xdr_free((xdrproc_t) xdr_rpcblist_ptr, (char *)&list_rbl); 172 list_rbl = tmp_rpcbl; 173 #ifdef PORTMAP 174 xdr_free((xdrproc_t) xdr_pmaplist_ptr, (char *)&list_pml); 175 list_pml = tmp_pmapl; 176 #endif 177 } 178