1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 23 /* 24 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 * 27 * Rentrant (MT-safe) getrpcYY interfaces. 28 */ 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <ctype.h> 33 #include <nss_dbdefs.h> 34 #include <stdlib.h> 35 #include <string.h> 36 #include <rpc/rpcent.h> 37 38 extern int str2rpcent(const char *, int, void *, char *, int); 39 40 static int rpc_stayopen; /* Unsynchronized, but it affects only */ 41 /* efficiency, not correctness */ 42 static DEFINE_NSS_DB_ROOT(db_root); 43 static DEFINE_NSS_GETENT(context); 44 45 void 46 _nss_initf_rpc(nss_db_params_t *p) 47 { 48 p->name = NSS_DBNAM_RPC; 49 p->default_config = NSS_DEFCONF_RPC; 50 } 51 52 struct rpcent * 53 getrpcbyname_r(const char *name, struct rpcent *result, char *buffer, 54 int buflen) 55 { 56 nss_XbyY_args_t arg; 57 nss_status_t res; 58 59 NSS_XbyY_INIT(&arg, result, buffer, buflen, str2rpcent); 60 arg.key.name = name; 61 arg.stayopen = rpc_stayopen; 62 res = nss_search(&db_root, _nss_initf_rpc, 63 NSS_DBOP_RPC_BYNAME, &arg); 64 arg.status = res; 65 return ((struct rpcent *)NSS_XbyY_FINI(&arg)); 66 } 67 68 struct rpcent * 69 getrpcbynumber_r(const int number, struct rpcent *result, char *buffer, 70 int buflen) 71 { 72 nss_XbyY_args_t arg; 73 nss_status_t res; 74 75 NSS_XbyY_INIT(&arg, result, buffer, buflen, str2rpcent); 76 arg.key.number = number; 77 arg.stayopen = rpc_stayopen; 78 res = nss_search(&db_root, _nss_initf_rpc, 79 NSS_DBOP_RPC_BYNUMBER, &arg); 80 arg.status = res; 81 return ((struct rpcent *)NSS_XbyY_FINI(&arg)); 82 } 83 84 void 85 setrpcent(const int stay) 86 { 87 rpc_stayopen |= stay; 88 nss_setent(&db_root, _nss_initf_rpc, &context); 89 } 90 91 void 92 endrpcent(void) 93 { 94 rpc_stayopen = 0; 95 nss_endent(&db_root, _nss_initf_rpc, &context); 96 nss_delete(&db_root); 97 } 98 99 struct rpcent * 100 getrpcent_r(struct rpcent *result, char *buffer, int buflen) 101 { 102 nss_XbyY_args_t arg; 103 nss_status_t res; 104 105 NSS_XbyY_INIT(&arg, result, buffer, buflen, str2rpcent); 106 /* No key, no stayopen */ 107 res = nss_getent(&db_root, _nss_initf_rpc, &context, &arg); 108 arg.status = res; 109 return ((struct rpcent *)NSS_XbyY_FINI(&arg)); 110 } 111 112 int 113 str2rpcent(const char *instr, int lenstr, void *ent, char *buffer, int buflen) 114 { 115 struct rpcent *rpc = (struct rpcent *)ent; 116 const char *p, *numstart, *limit, *namestart; 117 ssize_t numlen, namelen = 0; 118 char numbuf[12]; 119 char *numend; 120 121 if ((instr >= buffer && (buffer + buflen) > instr) || 122 (buffer >= instr && (instr + lenstr) > buffer)) 123 return (NSS_STR_PARSE_PARSE); 124 125 p = instr; 126 limit = p + lenstr; 127 128 while (p < limit && isspace(*p)) { 129 p++; 130 } 131 namestart = p; 132 while (p < limit && !isspace(*p)) { 133 p++; /* Skip over the canonical name */ 134 } 135 namelen = p - namestart; 136 137 if (buflen <= namelen) /* not enough buffer */ 138 return (NSS_STR_PARSE_ERANGE); 139 (void) memcpy(buffer, namestart, namelen); 140 buffer[namelen] = '\0'; 141 rpc->r_name = buffer; 142 143 while (p < limit && isspace(*p)) { 144 p++; 145 } 146 if (p >= limit) /* Syntax error -- no RPC number */ 147 return (NSS_STR_PARSE_PARSE); 148 numstart = p; 149 do { 150 p++; /* Find the end of the RPC number */ 151 } while (p < limit && !isspace(*p)); 152 numlen = p - numstart; 153 if (numlen >= sizeof (numbuf)) { 154 /* Syntax error -- supposed number is too long */ 155 return (NSS_STR_PARSE_PARSE); 156 } 157 (void) memcpy(numbuf, numstart, numlen); 158 numbuf[numlen] = '\0'; 159 rpc->r_number = (int)strtol(numbuf, &numend, 10); 160 if (*numend != '\0') 161 return (NSS_STR_PARSE_PARSE); 162 163 while (p < limit && isspace(*p)) { 164 p++; 165 } 166 /* 167 * Although nss_files_XY_all calls us with # stripped, 168 * we should be able to deal with it here in order to 169 * be more useful. 170 */ 171 if (p >= limit || *p == '#') { /* no aliases, no problem */ 172 char **ptr; 173 174 ptr = (char **)ROUND_UP(buffer + namelen + 1, 175 sizeof (char *)); 176 if ((char *)ptr >= buffer + buflen) { 177 rpc->r_aliases = 0; /* hope they don't try to peek in */ 178 return (NSS_STR_PARSE_ERANGE); 179 } 180 *ptr = 0; 181 rpc->r_aliases = ptr; 182 return (NSS_STR_PARSE_SUCCESS); 183 } 184 rpc->r_aliases = _nss_netdb_aliases(p, (int)(lenstr - (p - instr)), 185 buffer + namelen + 1, (int)(buflen - namelen - 1)); 186 return (NSS_STR_PARSE_SUCCESS); 187 } 188