getrpcent.c revision 1.1
1 /* 2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 3 * unrestricted use provided that this legend is included on all tape 4 * media and as a part of the software program in whole or part. Users 5 * may copy or modify Sun RPC without charge, but are not authorized 6 * to license or distribute it to anyone else except as part of a product or 7 * program developed by the user or with the express written consent of 8 * Sun Microsystems, Inc. 9 * 10 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 11 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 12 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 13 * 14 * Sun RPC is provided with no support and without any obligation on the 15 * part of Sun Microsystems, Inc. to assist in its use, correction, 16 * modification or enhancement. 17 * 18 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 19 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 20 * OR ANY PART THEREOF. 21 * 22 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 23 * or profits or other special, indirect and consequential damages, even if 24 * Sun has been advised of the possibility of such damages. 25 * 26 * Sun Microsystems, Inc. 27 * 2550 Garcia Avenue 28 * Mountain View, California 94043 29 */ 30 31 #if defined(LIBC_SCCS) && !defined(lint) 32 /*static char *sccsid = "from: @(#)getrpcent.c 1.14 91/03/11 Copyr 1984 Sun Micro";*/ 33 static char *rcsid = "$Id: getrpcent.c,v 1.1 1993/10/07 07:29:52 cgd Exp $"; 34 #endif 35 36 /* 37 * Copyright (c) 1984 by Sun Microsystems, Inc. 38 */ 39 40 #include <stdio.h> 41 #include <sys/types.h> 42 #include <string.h> 43 #include <rpc/rpc.h> 44 #ifdef YP 45 #include <rpcsvc/yp_prot.h> 46 #include <rpcsvc/ypclnt.h> 47 #endif 48 49 /* 50 * Internet version. 51 */ 52 struct rpcdata { 53 FILE *rpcf; 54 int stayopen; 55 #define MAXALIASES 35 56 char *rpc_aliases[MAXALIASES]; 57 struct rpcent rpc; 58 char line[BUFSIZ+1]; 59 #ifdef YP 60 char *domain; 61 char *current; 62 int currentlen; 63 #endif 64 } *rpcdata; 65 66 #ifdef YP 67 static int __yp_nomap = 0; 68 #endif /* YP */ 69 70 static struct rpcent *interpret(); 71 struct hostent *gethostent(); 72 char *inet_ntoa(); 73 74 static char RPCDB[] = "/etc/rpc"; 75 76 static struct rpcdata * 77 _rpcdata() 78 { 79 register struct rpcdata *d = rpcdata; 80 81 if (d == 0) { 82 d = (struct rpcdata *)calloc(1, sizeof (struct rpcdata)); 83 rpcdata = d; 84 } 85 return (d); 86 } 87 88 struct rpcent * 89 getrpcbynumber(number) 90 register int number; 91 { 92 register struct rpcdata *d = _rpcdata(); 93 register struct rpcent *p; 94 #ifdef YP 95 int reason; 96 char adrstr[16]; 97 #endif 98 99 if (d == 0) 100 return (0); 101 #ifdef YP 102 if (!__yp_nomap && _yp_check(&d->domain)) { 103 sprintf(adrstr, "%d", number); 104 reason = yp_match(d->domain, "rpc.bynumber", adrstr, strlen(adrstr), 105 &d->current, &d->currentlen); 106 switch(reason) { 107 case 0: 108 break; 109 case YPERR_MAP: 110 __yp_nomap = 1; 111 goto no_yp; 112 break; 113 default: 114 return(0); 115 break; 116 } 117 d->current[d->currentlen] = '\0'; 118 p = interpret(d->current, d->currentlen); 119 (void) free(d->current); 120 return p; 121 } 122 no_yp: 123 #endif /* YP */ 124 setrpcent(0); 125 while (p = getrpcent()) { 126 if (p->r_number == number) 127 break; 128 } 129 endrpcent(); 130 return (p); 131 } 132 133 struct rpcent * 134 getrpcbyname(name) 135 char *name; 136 { 137 struct rpcent *rpc; 138 char **rp; 139 140 setrpcent(0); 141 while (rpc = getrpcent()) { 142 if (strcmp(rpc->r_name, name) == 0) 143 return (rpc); 144 for (rp = rpc->r_aliases; *rp != NULL; rp++) { 145 if (strcmp(*rp, name) == 0) 146 return (rpc); 147 } 148 } 149 endrpcent(); 150 return (NULL); 151 } 152 153 void 154 setrpcent(f) 155 int f; 156 { 157 register struct rpcdata *d = _rpcdata(); 158 159 if (d == 0) 160 return; 161 #ifdef YP 162 if (!__yp_nomap && _yp_check(NULL)) { 163 if (d->current) 164 free(d->current); 165 d->current = NULL; 166 d->currentlen = 0; 167 return; 168 } 169 __yp_nomap = 0; 170 #endif /* YP */ 171 if (d->rpcf == NULL) 172 d->rpcf = fopen(RPCDB, "r"); 173 else 174 rewind(d->rpcf); 175 d->stayopen |= f; 176 } 177 178 void 179 endrpcent() 180 { 181 register struct rpcdata *d = _rpcdata(); 182 183 if (d == 0) 184 return; 185 #ifdef YP 186 if (!__yp_nomap && _yp_check(NULL)) { 187 if (d->current && !d->stayopen) 188 free(d->current); 189 d->current = NULL; 190 d->currentlen = 0; 191 return; 192 } 193 __yp_nomap = 0; 194 #endif /* YP */ 195 if (d->rpcf && !d->stayopen) { 196 fclose(d->rpcf); 197 d->rpcf = NULL; 198 } 199 } 200 201 struct rpcent * 202 getrpcent() 203 { 204 struct rpcent *hp; 205 int reason; 206 register struct rpcdata *d = _rpcdata(); 207 #ifdef YP 208 char *key = NULL, *val = NULL; 209 int keylen, vallen; 210 #endif 211 212 if (d == 0) 213 return(NULL); 214 #ifdef YP 215 if (!__yp_nomap && _yp_check(&d->domain)) { 216 if (d->current == NULL && d->currentlen == 0) { 217 reason = yp_first(d->domain, "rpc.bynumber", 218 &d->current, &d->currentlen, 219 &val, &vallen); 220 } else { 221 reason = yp_next(d->domain, "rpc.bynumber", 222 d->current, d->currentlen, 223 &d->current, &d->currentlen, 224 &val, &vallen); 225 } 226 switch(reason) { 227 case 0: 228 break; 229 case YPERR_MAP: 230 __yp_nomap = 1; 231 goto no_yp; 232 break; 233 default: 234 return(0); 235 break; 236 } 237 val[vallen] = '\0'; 238 hp = interpret(val, vallen); 239 (void) free(val); 240 return hp; 241 } 242 no_yp: 243 #endif /* YP */ 244 if (d->rpcf == NULL && (d->rpcf = fopen(RPCDB, "r")) == NULL) 245 return (NULL); 246 if (fgets(d->line, BUFSIZ, d->rpcf) == NULL) 247 return (NULL); 248 return (interpret(d->line, strlen(d->line))); 249 } 250 251 static struct rpcent * 252 interpret(val, len) 253 char *val; 254 int len; 255 { 256 register struct rpcdata *d = _rpcdata(); 257 char *p; 258 register char *cp, **q; 259 260 if (d == 0) 261 return (0); 262 (void) strncpy(d->line, val, len); 263 p = d->line; 264 d->line[len] = '\n'; 265 if (*p == '#') 266 return (getrpcent()); 267 cp = strpbrk(p, "#\n"); 268 if (cp == NULL) 269 return (getrpcent()); 270 *cp = '\0'; 271 cp = strpbrk(p, " \t"); 272 if (cp == NULL) 273 return (getrpcent()); 274 *cp++ = '\0'; 275 /* THIS STUFF IS INTERNET SPECIFIC */ 276 d->rpc.r_name = d->line; 277 while (*cp == ' ' || *cp == '\t') 278 cp++; 279 d->rpc.r_number = atoi(cp); 280 q = d->rpc.r_aliases = d->rpc_aliases; 281 cp = strpbrk(cp, " \t"); 282 if (cp != NULL) 283 *cp++ = '\0'; 284 while (cp && *cp) { 285 if (*cp == ' ' || *cp == '\t') { 286 cp++; 287 continue; 288 } 289 if (q < &(d->rpc_aliases[MAXALIASES - 1])) 290 *q++ = cp; 291 cp = strpbrk(cp, " \t"); 292 if (cp != NULL) 293 *cp++ = '\0'; 294 } 295 *q = NULL; 296 return (&d->rpc); 297 } 298 299
Indexes created Thu Oct 02 14:10:14 GMT 2025