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 /* forward */
  70 void _old_setrpcent(int f);
  71 struct rpcent *_old_getrpcent();
  72 void _old_endrpcent();
  73
  74 /*
  75  * Internet version.
  76  */
  77 struct rpcdata {
  78         FILE    *rpcf;
  79         int     stayopen;
  80 #define MAXALIASES      35
  81         char    *rpc_aliases[MAXALIASES];
  82         struct  rpcent rpc;
  83         char    line[BUFSIZ+1];
  84 } *rpcdata;
  85
  86 static  struct rpcent *interpret();
  87 struct  hostent *gethostent();
  88 char    *inet_ntoa();
  89
  90 static char RPCDB[] = "/etc/rpc";
  91
  92 static struct rpcdata *
  93 _rpcdata()
  94 {
  95         register struct rpcdata *d = rpcdata;
  96
  97         if (d == 0) {
  98                 d = (struct rpcdata *)calloc(1, sizeof (struct rpcdata));
  99                 rpcdata = d;
 100         }
 101         return (d);
 102 }
 103
 104 struct rpcent *
 105 _old_getrpcbynumber(number)
 106 #ifdef __LP64__
 107         int32_t number;
 108 #else
 109         register long number;
 110 #endif
 111 {
 112         register struct rpcdata *d = _rpcdata();
 113         register struct rpcent *p;
 114 #ifdef __LP64__
 115         int x;
 116
 117         x = number;
 118 #endif
 119
 120         if (d == 0)
 121                 return (0);
 122         _old_setrpcent(0);
 123         while ((p = _old_getrpcent()))
 124         {
 125 #ifdef __LP64__
 126                 if (p->r_number == x) break;
 127 #else
 128                 if (p->r_number == number) break;
 129 #endif
 130         }
 131         _old_endrpcent();
 132         return (p);
 133 }
 134
 135 struct rpcent *
 136 _old_getrpcbyname(name)
 137 #if defined(__APPLE__)
 138         const char *name;
 139 #else
 140         char *name;
 141 #endif
 142 {
 143         struct rpcent *rpc;
 144         char **rp;
 145
 146         _old_setrpcent(0);
 147         while ((rpc = _old_getrpcent())) {
 148                 if (strcmp(rpc->r_name, name) == 0)
 149                         return (rpc);
 150                 for (rp = rpc->r_aliases; *rp != NULL; rp++) {
 151                         if (strcmp(*rp, name) == 0)
 152                                 return (rpc);
 153                 }
 154         }
 155         _old_endrpcent();
 156         return (NULL);
 157 }
 158
 159 void
 160 _old_setrpcent(f)
 161         int f;
 162 {
 163         register struct rpcdata *d = _rpcdata();
 164
 165         if (d == 0)
 166                 return;
 167         if (d->rpcf == NULL)
 168                 d->rpcf = fopen(RPCDB, "r");
 169         else
 170                 rewind(d->rpcf);
 171         d->stayopen |= f;
 172 }
 173
 174 void
 175 _old_endrpcent()
 176 {
 177         register struct rpcdata *d = _rpcdata();
 178
 179         if (d == 0)
 180                 return;
 181         if (d->rpcf && !d->stayopen) {
 182                 fclose(d->rpcf);
 183                 d->rpcf = NULL;
 184         }
 185 }
 186
 187 struct rpcent *
 188 _old_getrpcent()
 189 {
 190         register struct rpcdata *d = _rpcdata();
 191
 192         if (d == 0)
 193                 return(NULL);
 194         if (d->rpcf == NULL && (d->rpcf = fopen(RPCDB, "r")) == NULL)
 195                 return (NULL);
 196         if (fgets(d->line, BUFSIZ, d->rpcf) == NULL)
 197                 return (NULL);
 198         return (interpret(d->line, strlen(d->line)));
 199 }
 200
 201 static struct rpcent *
 202 interpret(val, len)
 203         char *val;
 204         u_int len;
 205 {
 206         register struct rpcdata *d = _rpcdata();
 207         char *p;
 208         register char *cp, **q;
 209
 210         if (d == 0)
 211                 return (0);
 212         (void) strncpy(d->line, val, len);
 213         p = d->line;
 214         d->line[len] = '\n';
 215         if (*p == '#')
 216                 return (_old_getrpcent());
 217         cp = strpbrk(p, "#\n");
 218         if (cp == NULL)
 219                 return (_old_getrpcent());
 220         *cp = '\0';
 221         cp = strpbrk(p, " \t");
 222         if (cp == NULL)
 223                 return (_old_getrpcent());
 224         *cp++ = '\0';
 225         /* THIS STUFF IS INTERNET SPECIFIC */
 226         d->rpc.r_name = d->line;
 227         while (*cp == ' ' || *cp == '\t')
 228                 cp++;
 229         d->rpc.r_number = atoi(cp);
 230         q = d->rpc.r_aliases = d->rpc_aliases;
 231         cp = strpbrk(cp, " \t");
 232         if (cp != NULL)
 233                 *cp++ = '\0';
 234         while (cp && *cp) {
 235                 if (*cp == ' ' || *cp == '\t') {
 236                         cp++;
 237                         continue;
 238                 }
 239                 if (q < &(d->rpc_aliases[MAXALIASES - 1]))
 240                         *q++ = cp;
 241                 cp = strpbrk(cp, " \t");
 242                 if (cp != NULL)
 243                         *cp++ = '\0';
 244         }
 245         *q = NULL;
 246         return (&d->rpc);
 247 }
 248