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 * Copyright (c) 1991-1994 Sun Microsystems, Inc 24 * 25 * lib/libsocket/inet/getservbyname_r.c 26 * 27 * getservbyname_r() is defined in this file. It is implemented on top of 28 * _get_hostserv_inetnetdir_byname() which is also used to implement 29 * netdir_getbyname() for inet family transports. In turn the common code 30 * uses the name service switch policy for "hosts" and "services" unless 31 * the administrator chooses to bypass the name service switch by 32 * specifying third-party supplied nametoaddr libs for inet transports 33 * in /etc/netconfig. 34 * 35 * getservbyport_r() is similarly related to _get_hostserv_inetnetdir_byaddr() 36 * and netdir_getbyaddr(); 37 * 38 * The common code lives in lib/libnsl/nss/netdir_inet.c. 39 * 40 * getservent_r(), setservent() and endservent() are *not* implemented on top 41 * of the common interface; they go straight to the switch and are 42 * defined in getservent_r.c. 43 * 44 * There is absolutely no data sharing, not even the stayopen flag or 45 * enumeration state, between getservbyYY_r() and getservent_r(); 46 */ 47 48 #include <netdb.h> 49 #include <netdir.h> 50 #include <sys/types.h> 51 #include <nss_netdir.h> 52 53 extern int str2servent(const char *, int, void *, char *, int); 54 extern struct netconfig *__rpc_getconfip(); 55 56 struct servent * 57 getservbyname_r(const char *name, const char *proto, struct servent *result, 58 char *buffer, int buflen) 59 { 60 struct netconfig *nconf; 61 struct nss_netdirbyname_in nssin; 62 union nss_netdirbyname_out nssout; 63 int neterr; 64 65 if ((nconf = __rpc_getconfip("udp")) == NULL && 66 (nconf = __rpc_getconfip("tcp")) == NULL) { 67 return ((struct servent *)NULL); 68 } 69 nssin.op_t = NSS_SERV; 70 nssin.arg.nss.serv.name = name; 71 nssin.arg.nss.serv.proto = proto; 72 nssin.arg.nss.serv.buf = buffer; 73 nssin.arg.nss.serv.buflen = buflen; 74 75 nssout.nss.serv = result; 76 77 /* 78 * We pass in nconf and let the implementation of the long-named func 79 * decide whether to use the switch based on nc_nlookups. 80 */ 81 neterr = _get_hostserv_inetnetdir_byname(nconf, &nssin, &nssout); 82 83 (void) freenetconfigent(nconf); 84 if (neterr != ND_OK) { 85 return ((struct servent *)NULL); 86 } 87 return (nssout.nss.serv); 88 } 89 90 struct servent * 91 getservbyport_r(int port, const char *proto, struct servent *result, 92 char *buffer, int buflen) 93 { 94 struct netconfig *nconf; 95 struct nss_netdirbyaddr_in nssin; 96 union nss_netdirbyaddr_out nssout; 97 int neterr; 98 99 if ((nconf = __rpc_getconfip("udp")) == NULL && 100 (nconf = __rpc_getconfip("tcp")) == NULL) { 101 return ((struct servent *)NULL); 102 } 103 nssin.op_t = NSS_SERV; 104 nssin.arg.nss.serv.port = port; 105 nssin.arg.nss.serv.proto = proto; 106 nssin.arg.nss.serv.buf = buffer; 107 nssin.arg.nss.serv.buflen = buflen; 108 109 nssout.nss.serv = result; 110 111 /* 112 * We pass in nconf and let the implementation of this long-named func 113 * decide whether to use the switch based on nc_nlookups. 114 */ 115 neterr = _get_hostserv_inetnetdir_byaddr(nconf, &nssin, &nssout); 116 117 (void) freenetconfigent(nconf); 118 if (neterr != ND_OK) { 119 return ((struct servent *)NULL); 120 } 121 return (nssout.nss.serv); 122 } 123