getrpcent.c revision 1.9
1 /* $NetBSD: getrpcent.c,v 1.9 1998/02/10 04:54:34 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 1.9 1998/02/10 04:54:34 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 <netdb.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 55 #include <rpc/rpc.h> 56 57 #ifdef __weak_alias 58 __weak_alias(endrpcent,_endrpcent); 59 __weak_alias(getrpcbyname,_getrpcbyname); 60 __weak_alias(getrpcbynumber,_getrpcbynumber); 61 __weak_alias(getrpcent,_getrpcent); 62 __weak_alias(setrpcent,_setrpcent); 63 #endif 64 65 /* 66 * Internet version. 67 */ 68 struct rpcdata { 69 FILE *rpcf; 70 int stayopen; 71 #define MAXALIASES 35 72 char *rpc_aliases[MAXALIASES]; 73 struct rpcent rpc; 74 char line[BUFSIZ+1]; 75 } *rpcdata; 76 77 static struct rpcent *interpret __P((char *val, int len)); 78 79 static char RPCDB[] = "/etc/rpc"; 80 81 static struct rpcdata *_rpcdata __P((void)); 82 83 static struct rpcdata * 84 _rpcdata() 85 { 86 struct rpcdata *d = rpcdata; 87 88 if (d == NULL) { 89 d = (struct rpcdata *)calloc(1, sizeof (struct rpcdata)); 90 rpcdata = d; 91 } 92 return (d); 93 } 94 95 struct rpcent * 96 getrpcbynumber(number) 97 u_int32_t number; 98 { 99 struct rpcent *rpc; 100 101 setrpcent(0); 102 while ((rpc = getrpcent()) != NULL) { 103 if (rpc->r_number == number) 104 break; 105 } 106 endrpcent(); 107 return (rpc); 108 } 109 110 struct rpcent * 111 getrpcbyname(name) 112 const char *name; 113 { 114 struct rpcent *rpc; 115 char **rp; 116 117 setrpcent(0); 118 while ((rpc = getrpcent()) != NULL) { 119 if (strcmp(rpc->r_name, name) == 0) 120 break; 121 for (rp = rpc->r_aliases; *rp != NULL; rp++) { 122 if (strcmp(*rp, name) == 0) 123 break; 124 } 125 } 126 endrpcent(); 127 return (rpc); 128 } 129 130 void 131 setrpcent(f) 132 int f; 133 { 134 struct rpcdata *d = _rpcdata(); 135 136 if (d == NULL) 137 return; 138 if (d->rpcf == NULL) 139 d->rpcf = fopen(RPCDB, "r"); 140 else 141 rewind(d->rpcf); 142 d->stayopen |= f; 143 } 144 145 void 146 endrpcent() 147 { 148 struct rpcdata *d = _rpcdata(); 149 150 if (d == NULL) 151 return; 152 if (d->rpcf && !d->stayopen) { 153 fclose(d->rpcf); 154 d->rpcf = NULL; 155 } 156 } 157 158 struct rpcent * 159 getrpcent() 160 { 161 struct rpcdata *d = _rpcdata(); 162 163 if (d == NULL) 164 return(NULL); 165 if (d->rpcf == NULL && (d->rpcf = fopen(RPCDB, "r")) == NULL) 166 return (NULL); 167 if (fgets(d->line, BUFSIZ, d->rpcf) == NULL) 168 return (NULL); 169 return (interpret(d->line, strlen(d->line))); 170 } 171 172 static struct rpcent * 173 interpret(val, len) 174 char *val; 175 int len; 176 { 177 struct rpcdata *d = _rpcdata(); 178 char *p; 179 char *cp, **q; 180 181 if (d == NULL) 182 return (0); 183 (void) strncpy(d->line, val, len); 184 p = d->line; 185 d->line[len] = '\n'; 186 if (*p == '#') 187 return (getrpcent()); 188 cp = strpbrk(p, "#\n"); 189 if (cp == NULL) 190 return (getrpcent()); 191 *cp = '\0'; 192 cp = strpbrk(p, " \t"); 193 if (cp == NULL) 194 return (getrpcent()); 195 *cp++ = '\0'; 196 /* THIS STUFF IS INTERNET SPECIFIC */ 197 d->rpc.r_name = d->line; 198 while (*cp == ' ' || *cp == '\t') 199 cp++; 200 d->rpc.r_number = atoi(cp); 201 q = d->rpc.r_aliases = d->rpc_aliases; 202 cp = strpbrk(cp, " \t"); 203 if (cp != NULL) 204 *cp++ = '\0'; 205 while (cp && *cp) { 206 if (*cp == ' ' || *cp == '\t') { 207 cp++; 208 continue; 209 } 210 if (q < &(d->rpc_aliases[MAXALIASES - 1])) 211 *q++ = cp; 212 cp = strpbrk(cp, " \t"); 213 if (cp != NULL) 214 *cp++ = '\0'; 215 } 216 *q = NULL; 217 return (&d->rpc); 218 } 219
Indexes created Thu Oct 02 14:10:14 GMT 2025