rpc.subproj/getrpcent.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.1 (the "License").  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License.
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*
  25  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
  26  * unrestricted use provided that this legend is included on all tape
  27  * media and as a part of the software program in whole or part.  Users
  28  * may copy or modify Sun RPC without charge, but are not authorized
  29  * to license or distribute it to anyone else except as part of a product or
  30  * program developed by the user or with the express written consent of
  31  * Sun Microsystems, Inc.
  32  *
  33  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  34  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  35  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  36  *
  37  * Sun RPC is provided with no support and without any obligation on the
  38  * part of Sun Microsystems, Inc. to assist in its use, correction,
  39  * modification or enhancement.
  40  *
  41  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  42  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  43  * OR ANY PART THEREOF.
  44  *
  45  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  46  * or profits or other special, indirect and consequential damages, even if
  47  * Sun has been advised of the possibility of such damages.
  48  *
  49  * Sun Microsystems, Inc.
  50  * 2550 Garcia Avenue
  51  * Mountain View, California  94043
  52  */
  53
  54 #if defined(LIBC_SCCS) && !defined(lint)
  55 /*static char *sccsid = "from: @(#)getrpcent.c 1.14 91/03/11 Copyr 1984 Sun Micro";*/
  56 static char *rcsid = "$Id: getrpcent.c,v 1.3 2002/02/19 20:36:23 epeyton Exp $";
  57 #endif
  58
  59 /*
  60  * Copyright (c) 1984 by Sun Microsystems, Inc.
  61  */
  62
  63 #include <stdio.h>
  64 #include <stdlib.h>
  65 #include <sys/types.h>
  66 #include <string.h>
  67 #include <rpc/rpc.h>
  68
  69 /*
  70  * Internet version.
  71  */
  72 struct rpcdata {
  73         FILE    *rpcf;
  74         int     stayopen;
  75 #define MAXALIASES      35
  76         char    *rpc_aliases[MAXALIASES];
  77         struct  rpcent rpc;
  78         char    line[BUFSIZ+1];
  79 } *rpcdata;
  80
  81 static  struct rpcent *interpret();
  82 struct  hostent *gethostent();
  83 char    *inet_ntoa();
  84
  85 static char RPCDB[] = "/etc/rpc";
  86
  87 static struct rpcdata *
  88 _rpcdata()
  89 {
  90         register struct rpcdata *d = rpcdata;
  91
  92         if (d == 0) {
  93                 d = (struct rpcdata *)calloc(1, sizeof (struct rpcdata));
  94                 rpcdata = d;
  95         }
  96         return (d);
  97 }
  98
  99 struct rpcent *
 100 getrpcbynumber(number)
 101 #ifdef __LP64__
 102         int32_t number;
 103 #else
 104         register long number;
 105 #endif
 106 {
 107         register struct rpcdata *d = _rpcdata();
 108         register struct rpcent *p;
 109 #ifdef __LP64__
 110         int x;
 111
 112         x = number;
 113 #endif
 114
 115         if (d == 0)
 116                 return (0);
 117         setrpcent(0);
 118         while ((p = getrpcent()))
 119         {
 120 #ifdef __LP64__
 121                 if (p->r_number == x) break;
 122 #else
 123                 if (p->r_number == number) break;
 124 #endif
 125         }
 126         endrpcent();
 127         return (p);
 128 }
 129
 130 struct rpcent *
 131 getrpcbyname(name)
 132 #if defined(__APPLE__)
 133         const char *name;
 134 #else
 135         char *name;
 136 #endif
 137 {
 138         struct rpcent *rpc;
 139         char **rp;
 140
 141         setrpcent(0);
 142         while ((rpc = getrpcent())) {
 143                 if (strcmp(rpc->r_name, name) == 0)
 144                         return (rpc);
 145                 for (rp = rpc->r_aliases; *rp != NULL; rp++) {
 146                         if (strcmp(*rp, name) == 0)
 147                                 return (rpc);
 148                 }
 149         }
 150         endrpcent();
 151         return (NULL);
 152 }
 153
 154 void
 155 setrpcent(f)
 156         int f;
 157 {
 158         register struct rpcdata *d = _rpcdata();
 159
 160         if (d == 0)
 161                 return;
 162         if (d->rpcf == NULL)
 163                 d->rpcf = fopen(RPCDB, "r");
 164         else
 165                 rewind(d->rpcf);
 166         d->stayopen |= f;
 167 }
 168
 169 void
 170 endrpcent()
 171 {
 172         register struct rpcdata *d = _rpcdata();
 173
 174         if (d == 0)
 175                 return;
 176         if (d->rpcf && !d->stayopen) {
 177                 fclose(d->rpcf);
 178                 d->rpcf = NULL;
 179         }
 180 }
 181
 182 struct rpcent *
 183 getrpcent()
 184 {
 185         register struct rpcdata *d = _rpcdata();
 186
 187         if (d == 0)
 188                 return(NULL);
 189         if (d->rpcf == NULL && (d->rpcf = fopen(RPCDB, "r")) == NULL)
 190                 return (NULL);
 191         if (fgets(d->line, BUFSIZ, d->rpcf) == NULL)
 192                 return (NULL);
 193         return (interpret(d->line, strlen(d->line)));
 194 }
 195
 196 static struct rpcent *
 197 interpret(val, len)
 198         char *val;
 199         u_int len;
 200 {
 201         register struct rpcdata *d = _rpcdata();
 202         char *p;
 203         register char *cp, **q;
 204
 205         if (d == 0)
 206                 return (0);
 207         (void) strncpy(d->line, val, len);
 208         p = d->line;
 209         d->line[len] = '\n';
 210         if (*p == '#')
 211                 return (getrpcent());
 212         cp = strpbrk(p, "#\n");
 213         if (cp == NULL)
 214                 return (getrpcent());
 215         *cp = '\0';
 216         cp = strpbrk(p, " \t");
 217         if (cp == NULL)
 218                 return (getrpcent());
 219         *cp++ = '\0';
 220         /* THIS STUFF IS INTERNET SPECIFIC */
 221         d->rpc.r_name = d->line;
 222         while (*cp == ' ' || *cp == '\t')
 223                 cp++;
 224         d->rpc.r_number = atoi(cp);
 225         q = d->rpc.r_aliases = d->rpc_aliases;
 226         cp = strpbrk(cp, " \t");
 227         if (cp != NULL)
 228                 *cp++ = '\0';
 229         while (cp && *cp) {
 230                 if (*cp == ' ' || *cp == '\t') {
 231                         cp++;
 232                         continue;
 233                 }
 234                 if (q < &(d->rpc_aliases[MAXALIASES - 1]))
 235                         *q++ = cp;
 236                 cp = strpbrk(cp, " \t");
 237                 if (cp != NULL)
 238                         *cp++ = '\0';
 239         }
 240         *q = NULL;
 241         return (&d->rpc);
 242 }
 243