getrpcent.c revision 1.11
1 /* $NetBSD: getrpcent.c,v 1.11 1998/02/13 05:52:22 lukem Exp $ */ 2 3 /* 4 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 5 * unrestricted use provided that this legend is included on all tape 6 * media and as a part of the software program in whole or part. Users 7 * may copy or modify Sun RPC without charge, but are not authorized 8 * to license or distribute it to anyone else except as part of a product or 9 * program developed by the user or with the express written consent of 10 * Sun Microsystems, Inc. 11 * 12 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 13 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 14 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 15 * 16 * Sun RPC is provided with no support and without any obligation on the 17 * part of Sun Microsystems, Inc. to assist in its use, correction, 18 * modification or enhancement. 19 * 20 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 21 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 22 * OR ANY PART THEREOF. 23 * 24 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 25 * or profits or other special, indirect and consequential damages, even if 26 * Sun has been advised of the possibility of such damages. 27 * 28 * Sun Microsystems, Inc. 29 * 2550 Garcia Avenue 30 * Mountain View, California 94043 31 */ 32 33 #include <sys/cdefs.h> 34 #if defined(LIBC_SCCS) && !defined(lint) 35 #if 0 36 static char *sccsid = "@(#)getrpcent.c 1.14 91/03/11 Copyr 1984 Sun Micro"; 37 #else 38 __RCSID("$NetBSD: getrpcent.c,v 1.11 1998/02/13 05:52:22 lukem Exp $"); 39 #endif 40 #endif 41 42 /* 43 * Copyright (c) 1984 by Sun Microsystems, Inc. 44 */ 45 46 #include "namespace.h" 47 48 #include <sys/types.h> 49 50 #include <netinet/in.h> 51 #include <arpa/inet.h> 52 53 #include <netdb.h> 54 #include <stdio.h> 55 #include <stdlib.h> 56 #include <string.h> 57 58 #include <rpc/rpc.h> 59 60 #ifdef __weak_alias 61 __weak_alias(endrpcent,_endrpcent); 62 __weak_alias(getrpcbyname,_getrpcbyname); 63 __weak_alias(getrpcbynumber,_getrpcbynumber); 64 __weak_alias(getrpcent,_getrpcent); 65 __weak_alias(setrpcent,_setrpcent); 66 #endif 67 68 /* 69 * Internet version. 70 */ 71 struct rpcdata { 72 FILE *rpcf; 73 int stayopen; 74 #define MAXALIASES 35 75 char *rpc_aliases[MAXALIASES]; 76 struct rpcent rpc; 77 char line[BUFSIZ+1]; 78 } *rpcdata; 79 80 static struct rpcent *interpret __P((char *val, int len)); 81 82 static char RPCDB[] = "/etc/rpc"; 83 84 static struct rpcdata *_rpcdata __P((void)); 85 86 static struct rpcdata * 87 _rpcdata() 88 { 89 struct rpcdata *d = rpcdata; 90 91 if (d == 0) { 92 d = (struct rpcdata *)calloc(1, sizeof (struct rpcdata)); 93 rpcdata = d; 94 } 95 return (d); 96 } 97 98 struct rpcent * 99 getrpcbynumber(number) 100 int number; 101 { 102 struct rpcent *rpc; 103 104 setrpcent(0); 105 while ((rpc = getrpcent()) != NULL) { 106 if (rpc->r_number == number) 107 break; 108 } 109 endrpcent(); 110 return (rpc); 111 } 112 113 struct rpcent * 114 getrpcbyname(name) 115 char *name; 116 { 117 struct rpcent *rpc; 118 char **rp; 119 120 setrpcent(0); 121 while ((rpc = getrpcent()) != NULL) { 122 if (strcmp(rpc->r_name, name) == 0) 123 break; 124 for (rp = rpc->r_aliases; *rp != NULL; rp++) { 125 if (strcmp(*rp, name) == 0) 126 break; 127 } 128 } 129 endrpcent(); 130 return (rpc); 131 } 132 133 void 134 setrpcent(f) 135 int f; 136 { 137 struct rpcdata *d = _rpcdata(); 138 139 if (d == 0) 140 return; 141 if (d->rpcf == NULL) 142 d->rpcf = fopen(RPCDB, "r"); 143 else 144 rewind(d->rpcf); 145 d->stayopen |= f; 146 } 147 148 void 149 endrpcent() 150 { 151 struct rpcdata *d = _rpcdata(); 152 153 if (d == 0) 154 return; 155 if (d->rpcf && !d->stayopen) { 156 fclose(d->rpcf); 157 d->rpcf = NULL; 158 } 159 } 160 161 struct rpcent * 162 getrpcent() 163 { 164 struct rpcdata *d = _rpcdata(); 165 166 if (d == 0) 167 return(NULL); 168 if (d->rpcf == NULL && (d->rpcf = fopen(RPCDB, "r")) == NULL) 169 return (NULL); 170 if (fgets(d->line, BUFSIZ, d->rpcf) == NULL) 171 return (NULL); 172 return (interpret(d->line, strlen(d->line))); 173 } 174 175 static struct rpcent * 176 interpret(val, len) 177 char *val; 178 int len; 179 { 180 struct rpcdata *d = _rpcdata(); 181 char *p; 182 char *cp, **q; 183 184 if (d == 0) 185 return (0); 186 (void) strncpy(d->line, val, len); 187 p = d->line; 188 d->line[len] = '\n'; 189 if (*p == '#') 190 return (getrpcent()); 191 cp = strpbrk(p, "#\n"); 192 if (cp == NULL) 193 return (getrpcent()); 194 *cp = '\0'; 195 cp = strpbrk(p, " \t"); 196 if (cp == NULL) 197 return (getrpcent()); 198 *cp++ = '\0'; 199 /* THIS STUFF IS INTERNET SPECIFIC */ 200 d->rpc.r_name = d->line; 201 while (*cp == ' ' || *cp == '\t') 202 cp++; 203 d->rpc.r_number = atoi(cp); 204 q = d->rpc.r_aliases = d->rpc_aliases; 205 cp = strpbrk(cp, " \t"); 206 if (cp != NULL) 207 *cp++ = '\0'; 208 while (cp && *cp) { 209 if (*cp == ' ' || *cp == '\t') { 210 cp++; 211 continue; 212 } 213 if (q < &(d->rpc_aliases[MAXALIASES - 1])) 214 *q++ = cp; 215 cp = strpbrk(cp, " \t"); 216 if (cp != NULL) 217 *cp++ = '\0'; 218 } 219 *q = NULL; 220 return (&d->rpc); 221 } 222
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