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 *
getservbyname_r(const char * name,const char * proto,struct servent * result,char * buffer,int buflen)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 *
getservbyport_r(int port,const char * proto,struct servent * result,char * buffer,int buflen)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