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 1.2 1999/10/14 21:56:53 wsanchez Exp $";
  57 #endif
  58
  59 /*
  60  * Copyright (c) 1984 by Sun Microsystems, Inc.
  61  */
  62
  63 #include <stdio.h>
  64 #include <sys/types.h>
  65 #include <string.h>
  66 #include <rpc/rpc.h>
  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();
  81 struct  hostent *gethostent();
  82 char    *inet_ntoa();
  83
  84 static char RPCDB[] = "/etc/rpc";
  85
  86 static struct rpcdata *
  87 _rpcdata()
  88 {
  89         register 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         register long number;
 101 {
 102         register struct rpcdata *d = _rpcdata();
 103         register struct rpcent *p;
 104
 105         if (d == 0)
 106                 return (0);
 107         setrpcent(0);
 108         while (p = getrpcent()) {
 109                 if (p->r_number == number)
 110                         break;
 111         }
 112         endrpcent();
 113         return (p);
 114 }
 115
 116 struct rpcent *
 117 getrpcbyname(name)
 118 #if defined(__APPLE__)
 119         const char *name;
 120 #else
 121         char *name;
 122 #endif
 123 {
 124         struct rpcent *rpc;
 125         char **rp;
 126
 127         setrpcent(0);
 128         while (rpc = getrpcent()) {
 129                 if (strcmp(rpc->r_name, name) == 0)
 130                         return (rpc);
 131                 for (rp = rpc->r_aliases; *rp != NULL; rp++) {
 132                         if (strcmp(*rp, name) == 0)
 133                                 return (rpc);
 134                 }
 135         }
 136         endrpcent();
 137         return (NULL);
 138 }
 139
 140 void
 141 setrpcent(f)
 142         int f;
 143 {
 144         register struct rpcdata *d = _rpcdata();
 145
 146         if (d == 0)
 147                 return;
 148         if (d->rpcf == NULL)
 149                 d->rpcf = fopen(RPCDB, "r");
 150         else
 151                 rewind(d->rpcf);
 152         d->stayopen |= f;
 153 }
 154
 155 void
 156 endrpcent()
 157 {
 158         register struct rpcdata *d = _rpcdata();
 159
 160         if (d == 0)
 161                 return;
 162         if (d->rpcf && !d->stayopen) {
 163                 fclose(d->rpcf);
 164                 d->rpcf = NULL;
 165         }
 166 }
 167
 168 struct rpcent *
 169 getrpcent()
 170 {
 171         struct rpcent *hp;
 172         int reason;
 173         register struct rpcdata *d = _rpcdata();
 174
 175         if (d == 0)
 176                 return(NULL);
 177         if (d->rpcf == NULL && (d->rpcf = fopen(RPCDB, "r")) == NULL)
 178                 return (NULL);
 179         if (fgets(d->line, BUFSIZ, d->rpcf) == NULL)
 180                 return (NULL);
 181         return (interpret(d->line, strlen(d->line)));
 182 }
 183
 184 static struct rpcent *
 185 interpret(val, len)
 186         char *val;
 187         int len;
 188 {
 189         register struct rpcdata *d = _rpcdata();
 190         char *p;
 191         register char *cp, **q;
 192
 193         if (d == 0)
 194                 return (0);
 195         (void) strncpy(d->line, val, len);
 196         p = d->line;
 197         d->line[len] = '\n';
 198         if (*p == '#')
 199                 return (getrpcent());
 200         cp = strpbrk(p, "#\n");
 201         if (cp == NULL)
 202                 return (getrpcent());
 203         *cp = '\0';
 204         cp = strpbrk(p, " \t");
 205         if (cp == NULL)
 206                 return (getrpcent());
 207         *cp++ = '\0';
 208         /* THIS STUFF IS INTERNET SPECIFIC */
 209         d->rpc.r_name = d->line;
 210         while (*cp == ' ' || *cp == '\t')
 211                 cp++;
 212         d->rpc.r_number = atoi(cp);
 213         q = d->rpc.r_aliases = d->rpc_aliases;
 214         cp = strpbrk(cp, " \t");
 215         if (cp != NULL)
 216                 *cp++ = '\0';
 217         while (cp && *cp) {
 218                 if (*cp == ' ' || *cp == '\t') {
 219                         cp++;
 220                         continue;
 221                 }
 222                 if (q < &(d->rpc_aliases[MAXALIASES - 1]))
 223                         *q++ = cp;
 224                 cp = strpbrk(cp, " \t");
 225                 if (cp != NULL)
 226                         *cp++ = '\0';
 227         }
 228         *q = NULL;
 229         return (&d->rpc);
 230 }
 231